CN109999936B - High-precision quantitative liquid-transfering gun for biological/chemical/medical test and detection - Google Patents
High-precision quantitative liquid-transfering gun for biological/chemical/medical test and detection Download PDFInfo
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- CN109999936B CN109999936B CN201910346614.8A CN201910346614A CN109999936B CN 109999936 B CN109999936 B CN 109999936B CN 201910346614 A CN201910346614 A CN 201910346614A CN 109999936 B CN109999936 B CN 109999936B
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- coarse adjustment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/021—Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
- B01L3/0213—Accessories for glass pipettes; Gun-type pipettes, e.g. safety devices, pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L3/00—Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
- B01L3/02—Burettes; Pipettes
- B01L3/0289—Apparatus for withdrawing or distributing predetermined quantities of fluid
- B01L3/0293—Apparatus for withdrawing or distributing predetermined quantities of fluid for liquids
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- Analytical Chemistry (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The invention provides a high-precision quantitative liquid-transferring gun applied to biological/chemical/medical tests and detection, which comprises a gun shell, wherein a liquid-transferring device for quantitatively taking liquid, a liquid quantity adjusting device for adjusting the liquid-taking quantity of the liquid-transferring device and a limiting device for synchronously changing the limiting distance of the liquid-transferring device according to the data change of the liquid quantity adjusting device and quantitatively taking the liquid from the liquid-transferring device are arranged on the gun shell, a holding hole for holding by a user is formed in the gun shell, a mounting sleeve is further arranged on the gun shell, three groups of mounting sleeves are arranged on the mounting sleeve, and a first mounting sleeve, a second mounting sleeve and a third mounting sleeve are sequentially arranged along the length direction of the gun shell and point to a gun tail from a gun head.
Description
Technical Field
The invention relates to the technical field of experimental equipment, in particular to a liquid-transfering gun.
Background
The liquid-transfering gun is one kind of liquid-transfering gun, and is usually used for transfering small quantity or trace quantity of liquid in laboratory, and in the course of biological, medical and chemical experiments, it has need of repeatedly using large quantity of liquid-transfering guns, at present, the general liquid-transfering gun is manually operated to suck or discharge liquid, so that the quantity of liquid sucked by liquid-transfering gun can be easily controlled, and it is a great test for user's proficiency and operation technique, so that the working accuracy of liquid-transfering gun is low, and the speed of manually sucking liquid can not be easily controlled, and if the liquid is sucked quickly, it can result in suck-back, not only can contaminate liquid, but also can corrode and contaminate liquid-transfering gun, and can shorten its service life, and because the upper end of liquid-transfering gun is open structure, the piston rod can be extended out from gun body and reciprocated, and can easily bring external impurity into gun body, and can contaminate gun body, and can even can affect sealing property of, and thus its sealing effect is poor.
Disclosure of Invention
In order to solve the defects of the prior art, the invention aims to provide a liquid transfer gun which is used for transferring liquid with high precision, the whole liquid transfer process is slow, stable and smooth, and the liquid transfer precision of the liquid transfer gun is further improved.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The high-precision quantitative liquid-transferring gun applied to biological/chemical/medical tests and detection comprises a gun shell, wherein a liquid-transferring device for quantitatively taking liquid, a liquid amount adjusting device for adjusting the liquid-taking amount of the liquid-transferring device and a limiting device for synchronously changing the limiting distance of the liquid-transferring device according to the data change of the liquid amount adjusting device and enabling the liquid-transferring device to quantitatively take liquid are arranged on the gun shell;
the gun shell is provided with a holding hole for a user to hold, the gun shell is further provided with three groups of mounting sleeves, and the mounting sleeves are sequentially a first mounting sleeve, a second mounting sleeve and a third mounting sleeve along the length direction of the gun shell and from the gun head to the gun tail.
As a further improvement of the present solution.
The liquid-transfering device comprises a liquid-transfering mechanism for quantitatively transferring liquid and a control mechanism for controlling the liquid-transfering mechanism to be opened or not;
the liquid transfer mechanism comprises a gun head, a liquid storage cylinder and a liquid transfer component, the gun head is fixedly arranged on one side of the first mounting sleeve, which is far away from the second mounting sleeve, the liquid storage cylinder is arranged between the first mounting sleeve and the second mounting sleeve, the liquid storage cylinder is of a circular cylinder structure, the extending direction of the liquid storage cylinder is parallel to the length direction of the gun shell, one end of the liquid storage cylinder is open, the other end of the liquid storage cylinder is closed, the opening end of the liquid storage cylinder faces the third mounting sleeve, a fastener is arranged between the opening end of the liquid storage cylinder and the second mounting sleeve, the liquid storage cylinder and the second mounting sleeve are;
move liquid the component include the piston rod, the piston, move the liquid spring, the piston sets up in the liquid storage cylinder and constitutes sealed sliding guide cooperation between the two, the region between piston and the liquid storage cylinder blind end is the stock solution district, the piston rod is arranged with the liquid storage cylinder is coaxial, the one end and the piston fixed connection of piston rod, the other end is located the one side that the mounting sleeve three deviates from mounting sleeve one and this end is provided with and supports the touch panel, move the liquid spring housing and locate the piston rod and be located the part that the mounting sleeve three deviates from mounting sleeve one outside, and move the elasticity of liquid spring and make the piston do the motion of keeping away from the liquid storage cylinder blind end, move the.
As a further improvement of the present solution.
The control mechanism comprises a control block, a guide pillar, a control spring and a control panel, wherein a guide groove is formed in a holding hole arranged in the gun shell, away from the hole wall of the mounting sleeve I, a guide hole is formed in the bottom of the guide groove, the guide hole can be divided into two parts along the axial direction of the guide hole, the two parts are respectively a guide section close to the guide groove and a limiting section far away from the guide groove, and the diameter of the limiting section is larger than that of the guide section;
the control block is arranged in the guide groove and forms sliding guide fit between the guide block and the guide groove, the guide pillar is coaxially arranged in the guide hole and forms sliding guide fit between the guide pillar and the guide groove, one end of the guide pillar, which is positioned in the limiting section of the guide hole, is provided with a limiting step, the other end of the guide pillar is positioned in the guide groove and is fixedly connected with the control block, the control spring is sleeved outside the part of the guide pillar, which is positioned in the guide groove, and the elastic force of the control spring enables the control block to move away from the bottom of the guide groove;
the gun shell is also provided with an accommodating inner cavity, the accommodating inner cavity is positioned right below the mounting sleeve III and is communicated with the mounting sleeve III, the hole wall of the holding hole is also provided with a guide hole communicated with the accommodating inner cavity, the guide direction of the guide hole is parallel to the extension direction of the guide pillar, and the part of the piston rod positioned right above the accommodating inner cavity is provided with a control groove in an annular structure;
the control board is arranged in the accommodating inner cavity, a sliding guide fit with a guide direction parallel to the extension direction of the guide post is formed between the control board and the accommodating inner cavity, the end part of the control board facing the piston rod is positioned in the control groove, and the end part of the control board facing the piston rod is of an arc surface structure matched with the control groove;
the side of the control panel towards the control block is provided with a connecting hole, the side of the control block towards the control panel is provided with a connecting bulge, and the free end of the connecting bulge is positioned in the connecting hole.
As a further improvement of the present solution.
The pipetting device is also provided with a resistance mechanism which is used for providing resistance for the pipetting mechanism and enabling the pipetting mechanism to slowly pipette;
the gun shell is also provided with a resistance inner cavity, the resistance inner cavity is positioned on one side of the accommodating inner cavity, which is far away from the first mounting sleeve, the resistance inner cavity is communicated with the third mounting sleeve, and the side of the gun shell, which is far away from the third mounting sleeve, is also provided with a threaded hole communicated with the resistance inner cavity;
the resistance mechanism is arranged in the resistance inner cavity and comprises a movable support, a resistance wheel, an adjusting bolt and a resistance spring, the resistance wheel is movably arranged on the movable support and can rotate around the self axial direction, and the resistance wheel is contacted with the piston rod;
the adjusting bolt is arranged in the threaded hole and is in threaded connection with the threaded hole, one end of the resistance spring is connected with the adjusting bolt, the other end of the resistance spring is connected with the movable support, and the elastic force of the resistance spring enables the movable support to move relatively close to the piston rod.
As a further improvement of the present solution.
The liquid quantity adjusting device is arranged between the second mounting sleeve and the third mounting sleeve and comprises a coarse adjustment mechanism for coarse adjustment of a user, a fine adjustment mechanism for fine adjustment of the user and a display mechanism for displaying coarse adjustment/fine adjustment results;
the display mechanism comprises an installation shell and a display disc, the installation shell is of a shell structure with two open ends, one open end of the installation shell is fixedly installed on a second installation sleeve, the display disc is fixedly installed outside the installation shell, a first penetrating hole right opposite to the display disc is further formed in the installation shell, and a second penetrating hole which is coaxially arranged with the first penetrating hole is formed in the display disc.
As a further improvement of the present solution.
The rough adjusting mechanism comprises a rough adjusting rotary drum, a rough adjusting transmission member and a rough adjusting shaft, the axial direction of the rough adjusting shaft is perpendicular to the axial direction of the piston rod and the extending direction of the guide post, the rough adjusting shaft is movably arranged in the mounting shell and can rotate around the axial direction of the rough adjusting shaft, one end of the rough adjusting shaft penetrates through the first penetrating hole and the second penetrating hole and is positioned on one side of the display disc, which is far away from the mounting shell, and a rough adjusting pointer is arranged at the end;
the rough adjusting rotary drum is of a cylindrical barrel structure consisting of two groups of rough adjusting rotary shells in semi-cylindrical barrels, two ends of the rough adjusting rotary drum are open and are coaxially arranged with the piston rod, one open end of the rough adjusting rotary drum and the open end of the mounting shell departing from the first mounting sleeve are movably mounted, and the rough adjusting rotary drum can rotate around the axial direction of the rough adjusting rotary drum;
the rough adjustment transmission component is arranged in the installation shell and comprises a gear ring, a first intermediate gear and a first intermediate shaft, a fixing piece is arranged between the gear ring and the rough adjustment rotary drum, the gear ring and the rough adjustment rotary drum are coaxially and fixedly connected through the fixing piece, the axial direction of the first intermediate shaft is parallel to the axial direction of the piston rod, the first intermediate shaft is movably arranged on the installation shell and can rotate around the axial direction of the first intermediate shaft, and the first intermediate gear is fixedly sleeved outside the first intermediate shaft and is meshed with the gear ring;
the coarse adjustment transmission component further comprises a coarse adjustment worm, a coarse adjustment turbine and a second intermediate shaft, the coarse adjustment worm is coaxially and fixedly connected with the first intermediate shaft, the axial direction of the second intermediate shaft is parallel to the axial direction of the coarse adjustment shaft, the second intermediate shaft is movably arranged in the mounting shell and can rotate around the axial direction of the second intermediate shaft, and the coarse adjustment turbine is fixedly sleeved outside the second intermediate shaft and meshed with the coarse adjustment worm;
the coarse adjustment transmission component further comprises a second intermediate gear and a coarse adjustment gear, the second intermediate gear is fixedly sleeved outside the second intermediate shaft, and the coarse adjustment gear is fixedly sleeved outside the coarse adjustment shaft and meshed with the second intermediate gear.
As a further improvement of the present solution.
The fine adjustment mechanism comprises a fine adjustment rotary drum, a fine adjustment transmission component and a fine adjustment shaft, the fine adjustment shaft is of an annular cylinder structure, the fine adjustment shaft is coaxially and movably sleeved outside the coarse adjustment shaft, the fine adjustment shaft and the coarse adjustment shaft do not interfere with each other in rotation, one end of the fine adjustment shaft is positioned on one side, away from the mounting shell, of the display disc, and a fine adjustment pointer is arranged at the end of the fine adjustment shaft;
the fine tuning rotary drum is of a cylindrical barrel structure consisting of fine tuning rotary shells forming two groups of semi-cylindrical barrels, two ends of the fine tuning rotary drum are open and are coaxially arranged with the piston rod, one open end of the fine tuning rotary drum is movably connected with the open end of the coarse tuning rotary drum, the other open end of the fine tuning rotary drum is movably connected with the third mounting sleeve, and the fine tuning rotary drum can axially rotate around the fine tuning rotary drum;
the fine adjustment transmission component comprises a fine adjustment worm, a fine adjustment worm wheel and a third intermediate shaft, the fine adjustment worm is coaxially provided with a sleeve hole, the fine adjustment worm is coaxially and movably sleeved outside the piston rod and can axially rotate around the fine adjustment worm, one end of the fine adjustment worm and the opening end of the fine adjustment rotary drum facing the third mounting sleeve are connected in a key mode to carry out power connection transmission, and the other end of the fine adjustment worm is positioned in the mounting shell;
the axial direction of the middle shaft III is parallel to the axial direction of the fine adjustment shaft, the middle shaft III is movably arranged in the mounting shell and can rotate around the self axial direction, and the fine adjustment turbine is fixedly sleeved outside the middle shaft III and is meshed with the fine adjustment worm;
the fine adjustment transmission component also comprises a third intermediate gear, a fourth intermediate gear and a fourth intermediate shaft, wherein the axial direction of the fourth intermediate shaft is parallel to the axial direction of the fine adjustment shaft, the fourth intermediate shaft is movably arranged in the installation shell and can rotate around the axial direction of the fourth intermediate shaft, the third intermediate gear is fixedly sleeved outside the third intermediate shaft, and the fourth intermediate gear is fixedly sleeved outside the fourth intermediate shaft and is meshed with the third intermediate gear;
the fine-tuning transmission component further comprises a fifth intermediate gear and a fine-tuning gear, wherein the fifth intermediate gear is fixedly sleeved outside the fourth intermediate shaft, and the fine-tuning gear is fixedly sleeved outside the fine-tuning shaft and meshed with the fifth intermediate gear.
As a further improvement of the present solution.
The limiting device comprises a coarse adjustment synchronous mechanism and a fine adjustment synchronous mechanism, wherein the coarse adjustment synchronous mechanism is used for changing and synchronously changing the limiting distance of the coarse adjustment synchronous mechanism to the liquid transferring device according to the data of the coarse adjustment mechanism;
the coarse adjustment synchronization mechanism comprises a limiting column and a coarse adjustment spiral sleeve, the limiting column is of an annular column structure, the limiting column is coaxially and movably sleeved outside the fine adjustment worm, an avoidance hole used for meshing between the fine adjustment worm and the fine adjustment worm wheel is formed in the limiting column, one end of the limiting column is located in the coarse adjustment rotary drum, the other end of the limiting column is located in the liquid storage drum, the end of the limiting column is a limiting end, a first guide part is arranged between the limiting column and the coarse adjustment rotary drum, the first guide part is a first guide bulge arranged in the coarse adjustment rotary drum and a first guide hole arranged outside the limiting column, and sliding guide fit with the guide direction parallel to the axial direction of the limiting column is formed between the first guide bulge and;
the coarse adjustment screw sleeve is of an annular column body structure, the coarse adjustment screw sleeve is coaxially sleeved outside the limiting column, a threaded part is arranged between the coarse adjustment screw sleeve and the limiting column and is connected with the coarse adjustment screw sleeve and the limiting column through a first threaded part, and the first threaded part comprises a first internal thread arranged inside the coarse adjustment screw sleeve and a first external thread arranged outside the limiting column;
a second guiding component is arranged between the coarse adjustment spiral sleeve and the coarse adjustment rotary drum, the second guiding component comprises a second guiding bulge arranged inside the coarse adjustment rotary drum and a second guiding hole arranged outside the coarse adjustment spiral sleeve, and sliding guiding fit with the second guiding hole in a guiding direction parallel to the axial direction of the coarse adjustment spiral sleeve is formed between the second guiding bulge and the second guiding hole;
the end part of the coarse adjustment screw sleeve facing the fine adjustment mechanism is connected with the fine adjustment synchronous mechanism.
As a further improvement of the present solution.
The fine adjustment synchronous mechanism is arranged in the fine adjustment rotary drum and comprises a linkage sleeve and a fine adjustment spiral sleeve, the linkage sleeve is of an annular cylinder structure, a connecting piece is arranged between the linkage sleeve and the coarse adjustment spiral sleeve and is coaxially connected with the coarse adjustment spiral sleeve through the connecting piece, the connecting piece is of a semi-annular cylinder structure, one end of the connecting piece is coaxially fixed with the coarse adjustment spiral sleeve, the other end of the connecting piece is positioned on one side, facing the linkage sleeve, of the coarse adjustment spiral sleeve, the connecting piece is provided with two groups of built-in steps, the two groups of built-in steps are axially and symmetrically distributed relative to the coarse adjustment spiral sleeve, the area between the two groups of built-in steps and the coarse adjustment spiral sleeve is a connecting area, one end of the linkage sleeve is;
the linkage sleeve is also coaxially sleeved outside the limiting column, a third guide part is arranged between the linkage sleeve and the limiting column, the third guide part comprises a third guide bulge and a third guide hole, the third guide bulge is arranged inside the linkage sleeve, the third guide hole is arranged outside the limiting column, and sliding guide fit with the guide direction parallel to the axial direction of the limiting column is formed between the third guide bulge and the third guide hole;
the fine adjustment screw sleeve is of an annular cylinder structure, a second threaded part is arranged between the fine adjustment screw sleeve and the linkage sleeve and is connected with the fine adjustment screw sleeve through the second threaded part, and the second threaded part comprises a second internal thread arranged inside the fine adjustment screw sleeve and a second external thread arranged outside the linkage sleeve;
the fine tuning screw sleeve is also coaxially and fixedly arranged in the fine tuning rotary drum.
Compared with the prior art, the liquid transferring gun has the advantages that a user can adjust the liquid quantity adjusting device to further change the limiting distance between the limiting device and the liquid transferring device, so that the liquid transferring quantity of the liquid transferring gun is matched with the actually required liquid taking quantity, and meanwhile, the liquid quantity adjusting device achieves the purpose of adjustment through the matching of coarse adjustment of the coarse adjusting mechanism and fine adjustment of the fine adjusting mechanism, so that the liquid transferring precision of the liquid transferring gun is higher.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic structural diagram of the present invention.
Fig. 4 is a schematic structural diagram of the present invention.
Fig. 5 is a view showing the combination of the gun case and the pipetting device according to the present invention.
Fig. 6 is a schematic view of the gun housing of the present invention.
Fig. 7 is a view showing the combination of the gun case and the pipetting mechanism according to the present invention.
Fig. 8 is a schematic structural view of the pipetting mechanism of the present invention.
Fig. 9 is a combination view of the control mechanism, resistance mechanism, and piston rod of the present invention.
FIG. 10 is a view showing the combination of the liquid amount adjusting device and the stopper device of the present invention.
FIG. 11 is a schematic view showing the structure of a liquid amount adjusting apparatus according to the present invention.
FIG. 12 is a schematic view of the combination of the coarse and fine rotors of the present invention.
Fig. 13 is a schematic structural view of a coarse tuning transfer member of the present invention.
FIG. 14 is a schematic structural diagram of a fine tuning transmission member according to the present invention.
FIG. 15 is a partial structural view of a fine tuning transmission member according to the present invention.
Fig. 16 is a schematic structural view of the limiting device of the present invention.
FIG. 17 is a schematic diagram of a coarse synchronization mechanism according to the present invention.
FIG. 18 is a schematic diagram of the fine synchronization mechanism of the present invention in conjunction with a coarse turn sleeve.
Detailed Description
The liquid transfer device has the advantages that a user can adjust the liquid amount adjusting device to change the limiting distance between the limiting device and the liquid transfer device, so that the liquid transfer amount of the liquid transfer gun is matched with the actually required liquid transfer amount, and meanwhile, the liquid amount adjusting device realizes the adjustment purpose by matching coarse adjustment of the coarse adjustment mechanism and fine adjustment of the fine adjustment mechanism, so that the liquid transfer precision of the liquid transfer gun is higher.
A high-precision quantitative liquid-transferring gun applied to biological/chemical/medical tests and detection comprises a gun shell 100, wherein a liquid-transferring device 200 for quantitatively taking liquid, a liquid amount adjusting device 300 for adjusting the liquid-taking amount of the liquid-transferring device 200 and a limiting device 400 for synchronously changing the limiting distance of the liquid-transferring device 200 according to the data change of the liquid amount adjusting device 300 and enabling the liquid-transferring device 200 to quantitatively take liquid are mounted on the gun shell 100.
The user gets liquid volume adjustment liquid volume adjusting device 300 according to actual needs, liquid volume adjusting device 300 adjustment in-process draws stop device 400 and adjusts its spacing distance to pipetting device 200 in step, and make spacing distance and actual needs get liquid volume identical, then the user carries out the imbibition processing to liquid through pipetting device 200, until pipetting device 200 and stop device 400 contact, pipetting device 200 stops the imbibition this moment and pipetting device 200 the liquid volume equals actual needs and gets liquid volume, then the user puts into to the container through pipetting device 200 with getting liquid, finish this pipetting.
The gun shell 100 is provided with holding holes for holding by a user, the gun shell 100 is further provided with three groups of mounting sleeves, and the mounting sleeves are sequentially a first mounting sleeve 120, a second mounting sleeve 130 and a third mounting sleeve 140 along the length direction of the gun shell 100 and from the gun head to the gun tail.
The pipetting device 200 comprises a pipetting mechanism 210 for quantitatively taking liquid and a control mechanism 220 for controlling whether the pipetting mechanism 210 is opened or not.
The liquid transfer mechanism 210 comprises a gun head 211, a liquid storage cylinder 212 and a liquid transfer component, wherein the gun head 211 is fixedly installed on one side, deviating from the second mounting sleeve 130, of the first mounting sleeve 120, the liquid storage cylinder 212 is arranged between the first mounting sleeve 120 and the second mounting sleeve 130, the liquid storage cylinder 212 is of a circular cylinder structure with one end open and one end closed, the extending direction of the liquid storage cylinder is parallel to the length direction of the gun shell 100, the opening end of the liquid storage cylinder faces towards the third mounting sleeve 140, a fastening piece is arranged between the opening end of the liquid storage cylinder 212 and the second mounting sleeve 130, the fastening piece is fixedly installed between the opening end of the liquid storage cylinder 212 and the second mounting sleeve 130, and.
The liquid transfer component comprises a piston rod 213, a piston 214 and a liquid transfer spring 216, the piston 214 is arranged in the liquid storage cylinder 212, a sealed sliding guide fit is formed between the piston 214 and the closed end of the liquid storage cylinder 212, an area between the piston 214 and the closed end of the liquid storage cylinder 212 is a liquid storage area, the piston rod 213 and the liquid storage cylinder 212 are coaxially arranged, one end of the piston rod 213 is fixedly connected with the piston 214, the other end of the piston rod 213 is positioned on one side, away from the first mounting sleeve 120, of the third mounting sleeve 140, a contact plate 215 is arranged at the end of the piston rod, the liquid transfer spring 216 is sleeved on the outer portion, away from the first mounting sleeve 120, of the piston rod 213, the liquid transfer spring 216 enables the piston 214.
The control mechanism 220 removes the restriction on the pipetting mechanism 210 and the pipetting mechanism 210 starts pipetting, specifically: the elasticity of the pipetting spring 216 enables the piston 214 to move away from the closed end of the liquid storage cylinder 212 through the piston rod 213, so that the pressure of the liquid storage area is reduced, and the liquid is sucked into the liquid storage area through the gun head 211;
after the pipetting mechanism 210 finishes pipetting, the user can press the abutting plate 215 and make the piston 214 move close to the closed end of the liquid storage cylinder 212 through the piston rod 213, so that the liquid in the liquid storage area is injected into the container through the gun head 211.
The control mechanism 220 comprises a control block 221, a guide post 222, a control spring 223 and a control plate 224, wherein a guide groove is formed in the hole wall of the holding hole 110 arranged in the gun housing 100, which is far away from the first mounting sleeve 120, a guide hole is formed in the bottom of the guide groove, the guide hole can be divided into two parts along the axial direction of the guide hole, the two parts are respectively a guide section close to the guide groove and a limiting section far away from the guide groove, and the diameter of the limiting section is larger than that of the guide section.
The control block 221 is arranged in the guide groove and forms sliding guide fit between the guide block 221 and the guide groove, the guide post 222 is coaxially arranged in the guide hole and forms sliding guide fit between the guide hole and the guide groove, a limiting step is arranged at one end, located in a limiting section of the guide hole, of the guide post 222, the other end of the guide post 222 is located in the guide groove and is fixedly connected with the control block 221, the control spring 223 is sleeved outside a part, located in the guide groove, of the guide post 222, and the control block 221 moves away from the bottom of the guide groove due to the elasticity of the control spring 223.
The gun shell 100 is further provided with an accommodating inner cavity, the accommodating inner cavity is located right below the mounting sleeve III 140 and is connected and communicated with the mounting sleeve III, a guide hole connected and communicated with the accommodating inner cavity is further formed in the hole wall of the holding hole 110, the guide direction of the guide hole is parallel to the extending direction of the guide post 222, and a control groove in an annular structure is arranged on the part of the piston rod 213 located right above the accommodating inner cavity.
The control plate 224 is disposed in the accommodating cavity and forms a sliding guiding fit between the two, the guiding direction of the sliding guiding fit is parallel to the extending direction of the guide post 222, the end of the control plate 224 facing the piston rod 213 is located in the control groove, and preferably, the end of the control plate 224 facing the piston rod 213 is an arc structure matched with the control groove.
The side of the control board 224 facing the control block 221 is provided with a connecting hole, the side of the control block 221 facing the control board 224 is provided with a connecting protrusion, and the free end of the connecting protrusion is located in the connecting hole.
The user presses the control block 221 and makes the control block move close to the bottom of the guide groove, the control block 221 moves and pulls the control plate 224 to move synchronously, finally the control plate 224 is separated from the control groove arranged on the piston rod 213, the pipetting mechanism 210 can aspirate liquid, and the hand is released after pipetting;
when the piston rod 213 moves and the end of the control plate 224 faces the annular groove during the process of injecting the liquid into the container by the pipetting mechanism 210, the elastic force of the control spring 223 makes the end of the control plate 224 locate in the annular groove again, and the control mechanism 220 returns to the original state.
More specifically, since the pipetting mechanism 210 uses the elastic force of the pipetting spring 216 as the driving power during pipetting, the pipetting mechanism 210 takes a short time during pipetting, which may cause the liquid to be not sucked into the liquid storage area in time, and thus the amount of the liquid sucked does not meet the actual required amount, in order to solve this problem, the pipetting device 200 is further provided with a resistance mechanism 230 for providing resistance to the pipetting mechanism 210 and making it suck liquid slowly.
The gun shell 100 is further provided with a resistance inner cavity, the resistance inner cavity is located on one side, away from the first mounting sleeve 120, of the accommodating inner cavity, the resistance inner cavity is communicated with the third mounting sleeve 140, and a threaded hole communicated with the resistance inner cavity is further formed in the side, away from the third mounting sleeve 140, of the gun shell 100.
The resistance mechanism 230 is arranged in the resistance inner cavity, the resistance mechanism 230 comprises a movable support 231, a resistance wheel 232, an adjusting bolt 233 and a resistance spring 234, the resistance wheel 232 is movably arranged on the movable support 231 and can rotate around the self axial direction, and the resistance wheel 232 is in contact with the piston rod 213.
The adjusting bolt 233 is disposed in the threaded hole and is in threaded connection with the threaded hole, one end of the resistance spring 234 is connected with the adjusting bolt 233, the other end of the resistance spring 234 is connected with the movable bracket 231, and the elastic force of the resistance spring 234 makes the movable bracket 231 move relatively close to the piston rod 213.
In the pipetting process of the pipetting mechanism 210, the friction force between the resistance wheel 232 and the piston rod 213 increases the pipetting time of the pipetting mechanism 210, so that the pipetting process is slow, stable and smooth, and meanwhile, a user can change the compression amount of the resistance spring 234 by rotating the adjusting bolt 233, so that the friction force between the resistance wheel 232 and the piston rod 213 is changed.
The liquid amount adjusting device 300 is disposed between the second mounting sleeve 130 and the third mounting sleeve 140, and the liquid amount adjusting device 300 includes a coarse adjustment mechanism 310 for coarse adjustment by a user, a fine adjustment mechanism 320 for fine adjustment by the user, and a display mechanism for displaying the coarse adjustment/fine adjustment result.
The display mechanism comprises an installation shell and a display disc, the installation shell is of a shell structure with two open ends, one open end of the installation shell is fixedly installed on the second installation sleeve 130, the display disc is fixedly installed outside the installation shell, a first penetrating hole opposite to the display disc is further formed in the installation shell, and a second penetrating hole which is coaxially arranged with the first penetrating hole is formed in the display disc.
The coarse adjustment mechanism 310 includes a coarse adjustment rotary drum 311, a coarse adjustment transmission member, a coarse adjustment shaft 318, the axial direction of the coarse adjustment shaft 318 is perpendicular to the axial direction of the piston rod 213 and to the extending direction of the guide post 222, the coarse adjustment shaft 318 is movably installed in the installation housing and can rotate around the axial direction, one end of the coarse adjustment shaft 318 passes through the first through hole and the second through hole and is located on one side of the display panel departing from the installation housing, and a coarse adjustment pointer is arranged at the end.
The coarse adjustment rotary drum 311 is a cylindrical drum structure formed by two groups of coarse adjustment rotary shells which are semi-cylindrical drums, two ends of the coarse adjustment rotary drum 311 are open and are coaxially arranged with the piston rod 213, one open end of the coarse adjustment rotary drum 311 and the open end of the mounting shell which deviates from the mounting sleeve I120 are movably mounted, and the coarse adjustment rotary drum 311 can rotate around the self axial direction.
The rough adjustment transmission component is arranged in the mounting shell and comprises a gear ring 312, a first intermediate gear 313 and a first intermediate shaft, a fixing piece is arranged between the gear ring 312 and the rough adjustment rotary drum 311 and coaxially and fixedly connected with the gear ring and the rough adjustment rotary drum 311 through the fixing piece, the axial direction of the first intermediate shaft is parallel to the axial direction of the piston rod 213, the first intermediate shaft is movably mounted on the mounting shell and can rotate around the axial direction of the first intermediate shaft, and the first intermediate gear 313 is fixedly sleeved outside the first intermediate shaft and meshed with the gear ring 312.
The coarse adjustment transmission component further comprises a coarse adjustment worm 314, a coarse adjustment worm wheel 315 and a second intermediate shaft, the coarse adjustment worm 314 is coaxially and fixedly connected with the first intermediate shaft, the axial direction of the second intermediate shaft is parallel to the axial direction of the coarse adjustment shaft 318, the second intermediate shaft is movably arranged in the mounting shell and can rotate around the axial direction of the second intermediate shaft, and the coarse adjustment worm wheel 315 is fixedly sleeved outside the second intermediate shaft and meshed with the coarse adjustment worm wheel 314.
The coarse adjustment transmission component further comprises a second intermediate gear 316 and a coarse adjustment gear 317, the second intermediate gear 316 is fixedly sleeved outside the second intermediate gear, and the coarse adjustment gear 317 is fixedly sleeved outside the coarse adjustment shaft 318 and meshed with the second intermediate gear 316.
The rough adjustment process of the rough adjustment mechanism 310 specifically includes: the user rotates the coarse adjustment wheel 311, the coarse adjustment wheel 311 rotates and causes the coarse adjustment shaft 318 to rotate about its own axis via the coarse adjustment transmission member, the coarse adjustment shaft 318 rotates and pulls the coarse adjustment pointer to rotate synchronously, and the user can read the coarse adjustment amount by the position of the coarse adjustment pointer on the display panel.
The fine adjustment mechanism 320 comprises a fine adjustment rotary drum 321, a fine adjustment transmission member and a fine adjustment shaft 328, the fine adjustment shaft 328 is of an annular cylinder structure, the fine adjustment shaft 328 is coaxially and movably sleeved outside the coarse adjustment shaft 318, the fine adjustment shaft 328 and the coarse adjustment shaft 318 do not interfere with each other in a rotating mode, one end of the fine adjustment shaft 328 is located on one side, away from the mounting shell, of the display disc, and a fine adjustment pointer is arranged at the end of the fine adjustment shaft 328.
The fine tuning rotary drum 321 is a cylindrical drum structure formed by two groups of fine tuning rotary shells forming a semi-cylindrical drum, two ends of the fine tuning rotary drum 321 are open and are coaxially arranged with the piston rod 213, one open end of the fine tuning rotary drum 321 is movably connected with the open end of the coarse tuning rotary drum 311, the other open end of the fine tuning rotary drum is movably connected with the third mounting sleeve 140, and the fine tuning rotary drum 311 can rotate around the self axial direction.
The fine-tuning transmission component comprises a fine-tuning worm 322, a fine-tuning worm wheel 323 and a third intermediate shaft, wherein a sleeve hole is coaxially formed in the fine-tuning worm 322, the fine-tuning worm 322 is coaxially and movably sleeved outside the piston rod 213, the fine-tuning worm 322 can axially rotate around the fine-tuning worm, power connection transmission is carried out between one end of the fine-tuning worm 322 and the opening end of the fine-tuning rotary drum 321 facing the third mounting sleeve 140 in a key connection mode, and the other end of the fine-tuning worm 322 is located in the mounting.
The axial direction of the third intermediate shaft is parallel to the axial direction of the fine adjustment shaft 328, the third intermediate shaft is movably arranged in the mounting shell and can rotate around the axial direction of the third intermediate shaft, and the fine adjustment turbine 323 is fixedly sleeved outside the third intermediate shaft and meshed with the fine adjustment worm 322.
The fine-adjustment transmission component further comprises a third intermediate gear 324, a fourth intermediate gear 325 and a fourth intermediate shaft, wherein the axial direction of the fourth intermediate shaft is parallel to the axial direction of the fine-adjustment shaft 328, the fourth intermediate shaft is movably mounted in the mounting shell and can rotate around the axial direction of the fourth intermediate shaft, the third intermediate gear 324 is fixedly sleeved on the third intermediate shaft, and the fourth intermediate gear 325 is fixedly sleeved on the fourth intermediate shaft and meshed with the third intermediate gear 324.
The fine adjustment transmission component also comprises a fifth intermediate gear 326 and a fine adjustment gear 327, wherein the fifth intermediate gear 326 is fixedly sleeved outside the fourth intermediate shaft, and the fine adjustment gear 327 is fixedly sleeved outside the fine adjustment shaft 328 and meshed with the fifth intermediate gear 326.
The fine adjustment process of the fine adjustment mechanism 320 specifically includes: the user rotates the fine tuning rotary drum 321, the fine tuning rotary drum 321 rotates and enables the fine tuning shaft 328 to rotate around the self axial direction through the fine tuning transmission component, the fine tuning shaft 328 rotates and pulls the fine tuning pointer to rotate synchronously, and the user can read out the fine tuning amount through the position of the fine tuning pointer on the display panel;
the user adjusts the liquid amount by the cooperation of the coarse adjustment mechanism 310 and the fine adjustment mechanism 320, and reads the adjusted amount according to the position of the coarse adjustment pointer/fine adjustment pointer on the display panel.
The stopping device 400 includes a coarse synchronizing mechanism 410 for synchronously changing the stopping distance of the pipetting device 200 according to the data change of the coarse adjusting mechanism 310, and a fine adjusting synchronizing mechanism 420 for synchronously changing the stopping distance of the pipetting device 200 according to the coarse adjusting mechanism 410.
The coarse adjustment synchronization mechanism 410 comprises a limiting column 411 and a coarse adjustment screw sleeve 412, the limiting column 411 is of an annular cylinder structure, the limiting column 411 is coaxially and movably sleeved outside a fine adjustment worm 322, an avoidance hole used for meshing between the fine adjustment worm 322 and a fine adjustment worm wheel 323 is formed in the limiting column 411, one end of the limiting column 411 is located in the coarse adjustment rotary cylinder 311, the other end of the limiting column 411 is located in the liquid storage cylinder 212 and is a limiting end, a first guide part is arranged between the limiting column 411 and the coarse adjustment rotary cylinder 311, specifically, the first guide part is a first guide bulge arranged inside the coarse adjustment rotary cylinder 311 and a first guide hole arranged outside the limiting column 411, and a sliding guide fit with the first guide hole and the guide direction parallel to the axial direction of the limiting column 411 is formed between the first guide part and.
The coarse adjustment screw sleeve 412 is of an annular cylinder structure, the coarse adjustment screw sleeve 412 is coaxially sleeved outside the limiting column 411, a screw is arranged between the coarse adjustment screw sleeve 412 and the limiting column 411, the coarse adjustment screw sleeve and the limiting column 411 are connected through a first screw, and specifically, the first screw comprises a first internal thread arranged inside the coarse adjustment screw sleeve 412 and a first external thread arranged outside the limiting column 411.
A second guiding component is arranged between the coarse adjustment screw sleeve 412 and the coarse adjustment rotary drum 311, specifically, the second guiding component comprises a second guiding protrusion arranged inside the coarse adjustment rotary drum 311 and a second guiding hole arranged outside the coarse adjustment screw sleeve 412, and a sliding guiding fit with a guiding direction parallel to the axial direction of the coarse adjustment screw sleeve 412 is formed between the second guiding protrusion and the second guiding hole.
The coarse turnbuckle 412 is connected to the fine synchronization mechanism 420 at the end facing the fine adjustment mechanism 320.
The synchronization process of the coarse synchronization mechanism 410 is specifically: during the rough adjustment process of the rough adjustment mechanism 310, since the rough adjustment screw sleeve 412 is connected with the fine adjustment synchronization mechanism 420, the rough adjustment rotary cylinder 311 rotates and pulls the rough adjustment screw sleeve 412 to rotate synchronously, the rough adjustment screw sleeve 412 rotates and pulls the limit column 411 to move along the extending direction thereof, thereby changing the distance between the limit end of the limit column 411 and the piston 214.
The fine tuning synchronization mechanism 420 is disposed in the fine tuning rotary cylinder 321, the fine tuning synchronization mechanism 420 includes a linkage sleeve 421 and a fine tuning spiral sleeve 422, the linkage sleeve 421 is an annular cylinder structure, a connecting member is disposed between the linkage sleeve 421 and the coarse tuning spiral sleeve 412 and is coaxially connected with the linkage sleeve 421 and the coarse tuning spiral sleeve 412 through the connecting member, specifically, the connecting member is a semi-annular cylinder structure, one end of the connecting member is coaxially fixed with the coarse tuning spiral sleeve 412, the other end is located on one side of the coarse adjustment screw sleeve 412 facing the linkage sleeve 421 and is provided with built-in steps, the connecting pieces are provided with two groups and are symmetrically distributed about the axial direction of the coarse adjustment screw sleeve 412, the area between the two groups of built-in steps and the coarse adjustment screw sleeve 412 is a connecting area, one end of the linkage sleeve 421 is located in the connecting area and is provided with an external step, the external step and the connecting area form a rotating fit, and the coarse adjustment screw sleeve 412 does not interfere with the rotation of the linkage sleeve 421.
The linkage sleeve 421 is further coaxially sleeved outside the limiting column 411, a third guide part is arranged between the linkage sleeve 421 and the limiting column 411, specifically, the third guide part comprises a third guide protrusion arranged inside the linkage sleeve 421 and a third guide hole arranged outside the limiting column 411, and a sliding guide fit with a guide direction parallel to the axial direction of the limiting column 411 is formed between the third guide protrusion and the third guide hole.
Fine setting spiral shell 422 be annular cylinder structure, be provided with between fine setting spiral shell 422 and the interlock cover 421 screw member two and be connected through screw member two between the two, it is concrete, screw member two including set up in fine setting spiral shell 422 inside internal thread two, set up in the outside external screw thread two of interlock cover 421.
The fine tuning screw sleeve 422 is also coaxially and fixedly installed in the fine tuning rotary cylinder 321.
The synchronization process of the fine tuning synchronization mechanism 420 specifically includes: in the fine adjustment process of the fine adjustment mechanism 320, the fine adjustment rotary drum 321 rotates and pulls the fine adjustment screw sleeve 422 to synchronously rotate, the fine adjustment screw sleeve 422 rotates and pulls the linkage sleeve 421 to move along the extension direction of the fine adjustment rotary drum, the linkage sleeve 421 moves and pulls the coarse adjustment screw sleeve 412 to synchronously move, so that the limiting column 411 synchronously moves, and the distance between the limiting end of the limiting column 411 and the piston 214 is changed;
the user adjusts the coarse adjustment mechanism 310 and the fine adjustment mechanism 320 according to the actual pipetting amount, the user can read the adjustment data according to the positions of the coarse adjustment pointer and the fine adjustment pointer on the display panel, and simultaneously, in the adjustment process, the coarse adjustment synchronization mechanism 410 changes the distance between the limiting end of the limiting column 411 and the piston 214 synchronously along with the coarse adjustment mechanism 310 and the fine adjustment synchronization mechanism 420 changes the distance between the limiting end of the limiting column 411 and the piston 214 synchronously along with the fine adjustment mechanism 320, and finally, the distance between the limiting end of the limiting column 411 and the piston 214 is matched with the actual pipetting amount.
Claims (8)
1. The high-precision quantitative liquid-transferring gun is applied to biological/chemical/medical tests and detection and is characterized by comprising a gun shell, wherein the gun shell is provided with a liquid-transferring device for quantitatively taking liquid, a liquid amount adjusting device for adjusting the liquid-taking amount of the liquid-transferring device and a limiting device for synchronously changing the limiting distance of the liquid-transferring device according to the data change of the liquid amount adjusting device and enabling the liquid-transferring device to quantitatively take liquid;
the gun shell is provided with holding holes for holding by a user, the gun shell is also provided with mounting sleeves, and the mounting sleeves are provided with three groups, namely a first mounting sleeve, a second mounting sleeve and a third mounting sleeve in sequence along the length direction of the gun shell and from the gun head to the gun tail;
the liquid-transfering device comprises a liquid-transfering mechanism for quantitatively transferring liquid and a control mechanism for controlling the liquid-transfering mechanism to be opened or not;
the liquid transfer mechanism comprises a gun head, a liquid storage cylinder and a liquid transfer component, the gun head is fixedly arranged on one side of the first mounting sleeve, which is far away from the second mounting sleeve, the liquid storage cylinder is arranged between the first mounting sleeve and the second mounting sleeve, the liquid storage cylinder is of a circular cylinder structure, the extending direction of the liquid storage cylinder is parallel to the length direction of the gun shell, one end of the liquid storage cylinder is open, the other end of the liquid storage cylinder is closed, the opening end of the liquid storage cylinder faces the third mounting sleeve, a fastener is arranged between the opening end of the liquid storage cylinder and the second mounting sleeve, the liquid storage cylinder and the second mounting sleeve are;
the liquid transfer component comprises a piston rod, a piston and a liquid transfer spring, the piston is arranged in the liquid storage cylinder, a sealed sliding guide fit is formed between the piston and the closed end of the liquid storage cylinder, a liquid storage area is arranged in an area between the piston and the closed end of the liquid storage cylinder, the piston rod and the liquid storage cylinder are coaxially arranged, one end of the piston rod is fixedly connected with the piston, the other end of the piston rod is positioned on one side of the mounting sleeve III, which is far away from the mounting sleeve I, a touch panel is arranged at the end of the piston rod, the liquid transfer spring is sleeved outside a part of the piston rod, which is positioned on the mounting sleeve III, which is far away;
the control mechanism comprises a control block, a guide pillar, a control spring and a control panel, wherein a guide groove is formed in a holding hole arranged in the gun shell, away from the hole wall of the mounting sleeve I, a guide hole is formed in the bottom of the guide groove, the guide hole can be divided into two parts along the axial direction of the guide hole, the two parts are respectively a guide section close to the guide groove and a limiting section far away from the guide groove, and the diameter of the limiting section is larger than that of the guide section;
the control block is arranged in the guide groove and forms sliding guide fit between the guide block and the guide groove, the guide pillar is coaxially arranged in the guide hole and forms sliding guide fit between the guide pillar and the guide groove, one end of the guide pillar, which is positioned in the limiting section of the guide hole, is provided with a limiting step, the other end of the guide pillar is positioned in the guide groove and is fixedly connected with the control block, the control spring is sleeved outside the part of the guide pillar, which is positioned in the guide groove, and the elastic force of the control spring enables the control block to move away from the bottom of the guide groove;
the gun shell is also provided with an accommodating inner cavity, the accommodating inner cavity is positioned right below the mounting sleeve III and is communicated with the mounting sleeve III, the hole wall of the holding hole is also provided with a guide hole communicated with the accommodating inner cavity, the guide direction of the guide hole is parallel to the extension direction of the guide pillar, and the part of the piston rod positioned right above the accommodating inner cavity is provided with a control groove in an annular structure;
the control board is arranged in the accommodating inner cavity, a sliding guide fit with a guide direction parallel to the extension direction of the guide post is formed between the control board and the accommodating inner cavity, the end part of the control board facing the piston rod is positioned in the control groove, and the end part of the control board facing the piston rod is of an arc surface structure matched with the control groove;
the side of the control panel towards the control block is provided with a connecting hole, the side of the control block towards the control panel is provided with a connecting bulge, and the free end of the connecting bulge is positioned in the connecting hole.
2. The high-precision quantitative pipetting gun applied to biological/chemical/medical test and detection as claimed in claim 1, wherein the pipetting device is further provided with a resistance mechanism for providing resistance to the pipetting mechanism and enabling the pipetting mechanism to slowly pipette;
the gun shell is also provided with a resistance inner cavity, the resistance inner cavity is positioned on one side of the accommodating inner cavity, which is far away from the first mounting sleeve, the resistance inner cavity is communicated with the third mounting sleeve, and the side of the gun shell, which is far away from the third mounting sleeve, is also provided with a threaded hole communicated with the resistance inner cavity;
the resistance mechanism is arranged in the resistance inner cavity and comprises a movable support, a resistance wheel, an adjusting bolt and a resistance spring, the resistance wheel is movably arranged on the movable support and can rotate around the self axial direction, and the resistance wheel is contacted with the piston rod;
the adjusting bolt is arranged in the threaded hole and is in threaded connection with the threaded hole, one end of the resistance spring is connected with the adjusting bolt, the other end of the resistance spring is connected with the movable support, and the elastic force of the resistance spring enables the movable support to move relatively close to the piston rod.
3. The high-precision quantitative pipette gun applied to biological/chemical/medical tests and detection as claimed in claim 1, wherein the liquid amount adjusting device is disposed between the second mounting sleeve and the third mounting sleeve, and the liquid amount adjusting device comprises a coarse adjustment mechanism for coarse adjustment by a user, a fine adjustment mechanism for fine adjustment by the user, and a display mechanism for displaying the coarse/fine adjustment result;
the display mechanism comprises an installation shell and a display disc, the installation shell is of a shell structure with two open ends, one open end of the installation shell is fixedly installed on a second installation sleeve, the display disc is fixedly installed outside the installation shell, a first penetrating hole right opposite to the display disc is further formed in the installation shell, and a second penetrating hole which is coaxially arranged with the first penetrating hole is formed in the display disc.
4. The high-precision quantitative pipette gun applied to biological/chemical/medical tests and detection as claimed in claim 3, wherein the coarse adjustment mechanism comprises a coarse adjustment rotary cylinder, a coarse adjustment transmission member, a coarse adjustment shaft, the axial direction of the coarse adjustment shaft is perpendicular to the axial direction of the piston rod and to the extending direction of the guide post, the coarse adjustment shaft is movably mounted in the mounting housing and can rotate around the axial direction of the coarse adjustment shaft, one end of the coarse adjustment shaft passes through the first through hole and the second through hole and is located on one side of the display panel, which is far away from the mounting housing, and the other end is provided with a coarse adjustment pointer;
the rough adjusting rotary drum is of a cylindrical barrel structure consisting of two groups of rough adjusting rotary shells in semi-cylindrical barrels, two ends of the rough adjusting rotary drum are open and are coaxially arranged with the piston rod, one open end of the rough adjusting rotary drum and the open end of the mounting shell departing from the first mounting sleeve are movably mounted, and the rough adjusting rotary drum can rotate around the axial direction of the rough adjusting rotary drum;
the rough adjustment transmission component is arranged in the installation shell and comprises a gear ring, a first intermediate gear and a first intermediate shaft, a fixing piece is arranged between the gear ring and the rough adjustment rotary drum, the gear ring and the rough adjustment rotary drum are coaxially and fixedly connected through the fixing piece, the axial direction of the first intermediate shaft is parallel to the axial direction of the piston rod, the first intermediate shaft is movably arranged on the installation shell and can rotate around the axial direction of the first intermediate shaft, and the first intermediate gear is fixedly sleeved outside the first intermediate shaft and is meshed with the gear ring;
the coarse adjustment transmission component further comprises a coarse adjustment worm, a coarse adjustment turbine and a second intermediate shaft, the coarse adjustment worm is coaxially and fixedly connected with the first intermediate shaft, the axial direction of the second intermediate shaft is parallel to the axial direction of the coarse adjustment shaft, the second intermediate shaft is movably arranged in the mounting shell and can rotate around the axial direction of the second intermediate shaft, and the coarse adjustment turbine is fixedly sleeved outside the second intermediate shaft and meshed with the coarse adjustment worm;
the coarse adjustment transmission component further comprises a second intermediate gear and a coarse adjustment gear, the second intermediate gear is fixedly sleeved outside the second intermediate shaft, and the coarse adjustment gear is fixedly sleeved outside the coarse adjustment shaft and meshed with the second intermediate gear.
5. The high-precision quantitative pipette gun applied to biological/chemical/medical tests and detection as claimed in claim 4, wherein the fine adjustment mechanism comprises a fine adjustment rotary drum, a fine adjustment transmission member and a fine adjustment shaft, the fine adjustment shaft is of an annular cylinder structure, the fine adjustment shaft is coaxially and movably sleeved outside the coarse adjustment shaft, the fine adjustment shaft and the coarse adjustment shaft are mutually noninterfered in rotation, one end of the fine adjustment shaft is located on one side of the display panel, which is far away from the mounting shell, and the end is provided with a fine adjustment pointer;
the fine tuning rotary drum is of a cylindrical barrel structure consisting of fine tuning rotary shells forming two groups of semi-cylindrical barrels, two ends of the fine tuning rotary drum are open and are coaxially arranged with the piston rod, one open end of the fine tuning rotary drum is movably connected with the open end of the coarse tuning rotary drum, the other open end of the fine tuning rotary drum is movably connected with the third mounting sleeve, and the fine tuning rotary drum can axially rotate around the fine tuning rotary drum;
the fine adjustment transmission component comprises a fine adjustment worm, a fine adjustment worm wheel and a third intermediate shaft, the fine adjustment worm is coaxially provided with a sleeve hole, the fine adjustment worm is coaxially and movably sleeved outside the piston rod and can axially rotate around the fine adjustment worm, one end of the fine adjustment worm and the opening end of the fine adjustment rotary drum facing the third mounting sleeve are connected in a key mode to carry out power connection transmission, and the other end of the fine adjustment worm is positioned in the mounting shell;
the axial direction of the middle shaft III is parallel to the axial direction of the fine adjustment shaft, the middle shaft III is movably arranged in the mounting shell and can rotate around the self axial direction, and the fine adjustment turbine is fixedly sleeved outside the middle shaft III and is meshed with the fine adjustment worm;
the fine adjustment transmission component also comprises a third intermediate gear, a fourth intermediate gear and a fourth intermediate shaft, wherein the axial direction of the fourth intermediate shaft is parallel to the axial direction of the fine adjustment shaft, the fourth intermediate shaft is movably arranged in the installation shell and can rotate around the axial direction of the fourth intermediate shaft, the third intermediate gear is fixedly sleeved outside the third intermediate shaft, and the fourth intermediate gear is fixedly sleeved outside the fourth intermediate shaft and is meshed with the third intermediate gear;
the fine-tuning transmission component further comprises a fifth intermediate gear and a fine-tuning gear, wherein the fifth intermediate gear is fixedly sleeved outside the fourth intermediate shaft, and the fine-tuning gear is fixedly sleeved outside the fine-tuning shaft and meshed with the fifth intermediate gear.
6. The high-precision quantitative pipetting gun applied to biological/chemical/medical tests and detection as claimed in claim 4 or 5, wherein the position limiting device comprises a coarse adjustment synchronization mechanism for synchronously changing the position limiting distance of the pipetting device according to the data change of the coarse adjustment mechanism, and a fine adjustment synchronization mechanism for synchronously changing the position limiting distance of the coarse adjustment mechanism to the pipetting device according to the data change of the fine adjustment mechanism.
7. The high-precision quantitative pipette gun applied to biological/chemical/medical tests and detection as claimed in claim 6, wherein the coarse adjustment synchronization mechanism comprises a limit column and a coarse adjustment screw sleeve, the limit column is of an annular cylinder structure, the limit column is coaxially and movably sleeved outside the fine adjustment worm, an avoidance hole for meshing between the fine adjustment worm and the fine adjustment turbine is formed in the limit column, one end of the limit column is positioned in the coarse adjustment rotary cylinder, the other end of the limit column is positioned in the liquid storage cylinder and is a limit end, a first guide part is arranged between the limit column and the coarse adjustment rotary cylinder, the first guide part is a first guide projection arranged in the coarse adjustment rotary cylinder and a first guide hole arranged outside the limit column, and a sliding guide fit with the guide direction parallel to the axial direction of the limit column is formed between the first guide projection and the first guide hole;
the coarse adjustment screw sleeve is of an annular column body structure, the coarse adjustment screw sleeve is coaxially sleeved outside the limiting column, a threaded part is arranged between the coarse adjustment screw sleeve and the limiting column and is connected with the coarse adjustment screw sleeve and the limiting column through a first threaded part, and the first threaded part comprises a first internal thread arranged inside the coarse adjustment screw sleeve and a first external thread arranged outside the limiting column;
a second guiding component is arranged between the coarse adjustment spiral sleeve and the coarse adjustment rotary drum, the second guiding component comprises a second guiding bulge arranged inside the coarse adjustment rotary drum and a second guiding hole arranged outside the coarse adjustment spiral sleeve, and sliding guiding fit with the second guiding hole in a guiding direction parallel to the axial direction of the coarse adjustment spiral sleeve is formed between the second guiding bulge and the second guiding hole;
the end part of the coarse adjustment screw sleeve facing the fine adjustment mechanism is connected with the fine adjustment synchronous mechanism.
8. The high-precision quantitative pipette applied to biological/chemical/medical test and detection according to claim 7, the fine adjustment synchronous mechanism is arranged in the fine adjustment rotary drum and comprises a linkage sleeve and a fine adjustment spiral sleeve, the linkage sleeve is of an annular cylinder structure, a connecting piece is arranged between the linkage sleeve and the coarse adjustment spiral sleeve and is coaxially connected with the coarse adjustment spiral sleeve through the connecting piece, the connecting piece is of a semi-annular cylinder structure, one end of the connecting piece is coaxially fixed with the coarse adjustment spiral sleeve, the other end of the connecting piece is positioned on one side of the coarse adjustment spiral sleeve, which faces the linkage sleeve, and is provided with built-in steps, the connecting piece is provided with two groups which are symmetrically distributed along the axial direction of the coarse adjustment spiral sleeve, the area between the two groups of built-in steps and the coarse adjustment spiral sleeve is a connecting area, one end of the linkage sleeve is positioned in the connecting area, the;
the linkage sleeve is also coaxially sleeved outside the limiting column, a third guide part is arranged between the linkage sleeve and the limiting column, the third guide part comprises a third guide bulge and a third guide hole, the third guide bulge is arranged inside the linkage sleeve, the third guide hole is arranged outside the limiting column, and sliding guide fit with the guide direction parallel to the axial direction of the limiting column is formed between the third guide bulge and the third guide hole;
the fine adjustment screw sleeve is of an annular cylinder structure, a second threaded part is arranged between the fine adjustment screw sleeve and the linkage sleeve and is connected with the fine adjustment screw sleeve through the second threaded part, and the second threaded part comprises a second internal thread arranged inside the fine adjustment screw sleeve and a second external thread arranged outside the linkage sleeve;
the fine tuning screw sleeve is also coaxially and fixedly arranged in the fine tuning rotary drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910346614.8A CN109999936B (en) | 2019-04-27 | 2019-04-27 | High-precision quantitative liquid-transfering gun for biological/chemical/medical test and detection |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910346614.8A CN109999936B (en) | 2019-04-27 | 2019-04-27 | High-precision quantitative liquid-transfering gun for biological/chemical/medical test and detection |
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| CN109999936B true CN109999936B (en) | 2020-09-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP4058108A2 (en) * | 2019-11-14 | 2022-09-21 | Congruence Medical Solutions, LLC | Variable dosing syringe |
| CN114247492B (en) * | 2021-12-23 | 2023-02-07 | 安徽阜邦生物科技有限公司 | Rapidly-fixed detection equipment for chemical engineering inspection and use method thereof |
| CN114517182A (en) * | 2022-03-21 | 2022-05-20 | 山东大学 | T cell sorting method for improving tumor killing capability of immune cells |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI20002241A0 (en) * | 2000-10-11 | 2000-10-11 | Labsystems Oy | Adjustable pipette |
| FI109407B (en) * | 2001-02-09 | 2002-07-31 | Biohit Oyj | A suction device |
| CN101559389B (en) * | 2008-04-17 | 2011-07-27 | 大龙兴创实验仪器(北京)有限公司 | Adjustable pipettor and adjusting device thereof |
| CN205613441U (en) * | 2016-04-18 | 2016-10-05 | 神华集团有限责任公司 | Pipette |
| CN206622126U (en) * | 2017-04-13 | 2017-11-10 | 重庆生科源生物技术有限公司 | A kind of adjustable pipette |
| CN208642702U (en) * | 2018-08-03 | 2019-03-26 | 天津繁茂科技有限公司 | A kind of high-precision quantitative pipettor |
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Address after: 230601 Anhui road University, 292 Ziyun Road, Hefei economic and Technological Development Zone, Anhui Applicant after: Li Jun Address before: No. 17, Dongcheng Road and Foziling Road, Jinan District, Luan City, Anhui Province Applicant before: Li Jun |
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Effective date of registration: 20200811 Address after: 215000 units 101 and 201, C37 building, 218 Xinghu street, Suzhou Industrial Park, Jiangsu Province Applicant after: Suqiao Biology (Suzhou) Co., Ltd Address before: 230601 Anhui road University, 292 Ziyun Road, Hefei economic and Technological Development Zone, Anhui Applicant before: Li Jun |
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Address after: 215000 units 101 and 201, C37 / F, 218 Xinghu street, Suzhou Industrial Park, Jiangsu Province Patentee after: Suzhou Yaoming Biotechnology Co.,Ltd. Address before: 215000 units 101 and 201, C37 / F, 218 Xinghu street, Suzhou Industrial Park, Jiangsu Province Patentee before: Suqiao Biology (Suzhou) Co., Ltd |