CN107442406A - A kind of construction site sand sieving machine provided with uniform board - Google Patents
A kind of construction site sand sieving machine provided with uniform board Download PDFInfo
- Publication number
- CN107442406A CN107442406A CN201710700542.3A CN201710700542A CN107442406A CN 107442406 A CN107442406 A CN 107442406A CN 201710700542 A CN201710700542 A CN 201710700542A CN 107442406 A CN107442406 A CN 107442406A
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- CN
- China
- Prior art keywords
- rotating shaft
- uniform board
- sand
- fixed
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/047—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump supply being effected by follower in container, e.g. membrane or floating piston, or by deformation of container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/28—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens
- B07B1/34—Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting or wobbling screens jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/42—Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
Landscapes
- Combined Means For Separation Of Solids (AREA)
Abstract
The invention discloses a kind of construction site sand sieving machine provided with uniform board, including base, the husky frame of sieve and uniform board；The top right side of the base is provided with two pieces of risers, sieves husky frame and is movably arranged between two pieces of risers；Uniform board is provided with the husky frame of sieve, is driven and rotated by transmission mechanism by motor；The deflector chute being obliquely installed is fixed with the inwall of right side riser；Shower nozzle is provided with below the left side of the deflector chute；The present invention can effectively avoid sand is some region of on sieve plate from concentrating accumulation, ensure that the husky efficiency of sieve；Sand after screening can be sprayed, get wet the sand after screening so as to be blown away, avoided the waste of sand and reduce the pollution to environment；The present invention is rational in infrastructure simultaneously, simple to operate, is worth of widely use.
Description
Technical field
The present invention relates to a kind of Sand screen, specifically a kind of construction site sand sieving machine provided with uniform board.
Background technology
Sand sieving machine also known as nonirrigated farmland sieve large junk, sand seperator, apply to river course, reservoir, the sandstone separation equipment of coal yard.
By hull, shelf, reductor, conveyer belt, turn sieve, engine or motor, composition.This type is simple in construction, economic and practical, easily behaviour
Make.It is divided into drum type sand screening machine, washing drum type sand screening machine, vibration sieve type sand sieving machine etc..Sand sieving machine is repaired the roads in present bridge of repairing
Deng being a kind of very common Architectural Equipment in architectural engineering, and it is a kind of indispensable machinery of engineering.
Existing sand sieving machine is that sand is poured directly on sieve plate and then screened mostly, this just holds in pan feeding
It is easily caused in a certain set of regions of the sand on sieve plate and accumulates, so as to influences to sieve husky efficiency.
The content of the invention
It is an object of the invention to provide a kind of construction site sand sieving machine provided with uniform board, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the present invention provides following technical scheme：
A kind of construction site sand sieving machine provided with uniform board, including base, the husky frame of sieve and uniform board；The top of the base
Two pieces of risers are provided with the right side of portion, the husky frame of sieve is arranged between two pieces of risers, and the bottom plate for sieving husky frame is made up of sieve plate, and sieve is husky
Supporting plate is symmetrically connected with left and right sides of frame, supporting plate stretches out riser, the groove moved up and down for supporting plate is offered on riser
Hole, supporting plate, which is located at below the plate body on the outside of riser, is provided with transverse slat, and transverse slat is fixed on riser, connected between supporting plate and transverse slat
There is support spring；The top left side of the base is fixed with support, and motor, the output end connection of motor are provided with the top of support
Power transmission shaft, power transmission shaft extend right up to the top of Right side support plate, axle sleeve are connected with the upper surface of vertical plates on both sides, and axle sleeve is arranged
In the periphery of power transmission shaft, power transmission shaft, which is located on the axis body above supported on both sides plate, is mounted on cam；The middle part of the power transmission shaft
Position is provided with drive bevel gear, is located on the bottom plate of screening frame inner chamber below drive bevel gear and is provided with first rotating shaft, and first
The lower end of rotating shaft is fixed with a uniform board laterally set, is provided with gap between uniform board and the inner chamber bottom plate of screening frame, and first
The upper surface of rotating shaft offers axis hole in the axial direction, and screening frame inner chamber bottom plate is fixed in the lower end rotation connection of first rotating shaft
First bearing seat, is provided with the second rotating shaft above first rotating shaft, and the second rotating shaft is plugged in the axis hole of first rotating shaft and can be with
Move up and down, the axis body periphery of the second rotating shaft is circumferentially equidistantly fixed with multiple flat keys, offered in the axis hole of first rotating shaft with
The keyway that flat key is engaged, flat key are slidably connected keyway；The deflector chute being obliquely installed is fixed with the inwall of right side riser, from sieve
The sand for selecting frame to fall falls in deflector chute and glided then along deflector chute, the left side of deflector chute and the inwall of left side vertical plate
Between be provided with gap, the gap constitutes feed opening, collection frame is provided with below feed opening；Below the left side of the deflector chute
It is provided with shower nozzle；Driving pulley is installed on the left end axis body of the power transmission shaft, driving pulley connects driven pulley by belt,
The left side of driven pulley connects the 3rd rotating shaft, and the 3rd axis of rotation is connected and fixed on the second bearing seat of support right flank, from
The right-hand member of movable belt pulley is coaxially fixed with disk；Cylinder body is provided with below the disk, is provided with what is be matched therewith in cylinder body
Piston sheet, the right side bias of disk are hinged with connecting rod, the other end Hinged piston piece of connecting rod, and bar is offered on the top plate of cylinder body
Shape hole, the lower end left and right sides of cylinder body are connected to drinking-water pipe and outlet pipe, wherein outlet pipe connection shower nozzle, drinking-water pipe connection
Water tank.
As the further scheme of the present invention：The support spring is stiffness spring.
As the further scheme of the present invention：The flat key has four.
As the further scheme of the present invention：The cylinder body is arranged on cylinder body base, and it is vertical that cylinder body base is fixed on left side
The outer wall of plate.
As the further scheme of the present invention：Check valve is mounted on the drinking-water pipe and outlet pipe.
As the further scheme of the present invention：The water tank is arranged on water tank base, and water tank base is fixed on base
Top surface.
Compared with prior art, the beneficial effects of the invention are as follows：
The present invention at work, is rotated, the process of cam rotation by motor driven cam, drive bevel gear and driving pulley
In constantly contradict installing plate so as to drive the husky frame up-down vibration of sieve, sand is screened；Drive bevel gear is driven from mantle tooth
Wheel rotates, and then drives the second axis of rotation, and the second rotating shaft drives first rotating shaft to rotate, so that uniform board rotates, uniform board
The sand on the bottom plate of screening frame inner chamber is stirred, sand is evenly distributed on the inner chamber bottom plate of screening frame, avoids sand
A certain region accumulation is concentrated on so as to influence screening efficiency；Driving pulley is rotated by belt belt wheel driven pulley, so as to drive
Disk rotational, piston sheet is driven to move back and forth up and down by connecting rod during disk rotational, so as to be supplied water to shower nozzle, shower nozzle is to sieve
Sand after choosing is sprayed so that sand, which is got wet, to be blown away, and so as to reduce sand, the waste for avoiding sand is same
When also reduce pollution to environment.
Brief description of the drawings
Fig. 1 is the structural representation of the construction site sand sieving machine provided with uniform board.
Fig. 2 is A-A structural representations in Fig. 1.
Fig. 3 is B-B structural representations in Fig. 1.
In figure：1- bases, 2- risers, 3- sieve husky frame, 4- supporting plates, 5- transverse slats, 6- support springs, 7- motors, 8- transmissions
Axle, 9- cams, 10- axle sleeves, 11- drive bevel gears, 12- driven wheels of differential, 13- first rotating shafts, 14- first bearing seats, 15-
Two rotating shafts, 16- uniform boards, 17- driving pulleys, 18- driven pulleys, the rotating shafts of 19- the 3rd, 20- second bearing seats, 21- disks,
22- connecting rods, 23- piston sheets, 24- cylinder bodies, 25- outlet pipes, 26- shower nozzles, 27- drinking-water pipes, 28- water tanks, 29- water tank bases, 30-
Cylinder body base, 31- deflector chutes, 32- collection frames, 33- flat keys, 34- keyways, 35- bar holes, 36- supports.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
Refer to Fig. 1~3, in the embodiment of the present invention, a kind of construction site sand sieving machine provided with uniform board, including base
1st, husky frame 3 and uniform board 16 are sieved；The top right side of the base 1 is provided with two pieces of risers 2, and the husky frame 3 of sieve is arranged on two pieces
Between riser 2, the bottom plate for sieving husky frame 3 is made up of sieve plate, and the left and right sides for sieving husky frame 3 is symmetrically connected with supporting plate 4, supporting plate 4
Riser 2 is stretched out, offers the slotted eye (not shown) moved up and down for supporting plate 4 on riser 2, supporting plate 4 is located at outside riser 2
Transverse slat 5 is provided with below the plate body of side, transverse slat 5 is fixed on riser 2, and support spring 6 is connected between supporting plate 4 and transverse slat 5, branch
Support spring 6 is stiffness spring；The top left side of the base 1 is fixed with support 36, and the top of support 36 is provided with motor 7, electricity
The output end connection power transmission shaft 8 of machine 7, power transmission shaft 8 extend right up to the top of Right side support plate 4, further, vertical plates on both sides 2
Upper surface on be connected with axle sleeve 10, axle sleeve 10 is set in the periphery of power transmission shaft 8, to ensure the rotational stability of power transmission shaft 8,
Power transmission shaft 8, which is located on the axis body of the top of supported on both sides plate 4, is mounted on cam 9, when motor 7 rotates with moving cam 9, cam 9
Installing plate 4 is constantly contradicted, so as to drive the husky up-down vibration of frame 3 of sieve, sand is screened；
The medium position of the power transmission shaft 8 is provided with drive bevel gear 11, is located at active conical tooth on the inner chamber bottom plate of screening frame 3
The lower section of wheel 11 is provided with first rotating shaft 13, and the lower end of first rotating shaft 13 is fixed with a uniform board 16 laterally set, uniform board
It is provided with gap between 16 and the inner chamber bottom plate of screening frame 3, the upper surface of first rotating shaft 13 offers axis hole in the axial direction, and first
The first bearing seat 14 of the inner chamber bottom plate of screening frame 3 is fixed in the lower end rotation connection of rotating shaft 13, and the top of first rotating shaft 13 is set
There is the second rotating shaft 15, the second rotating shaft 15 is plugged in the axis hole of first rotating shaft 13 and can moved up and down, the axle of the second rotating shaft 15
Body periphery is circumferentially equidistantly fixed with multiple flat keys 34, and further, flat key 34 has four, is opened up in the axis hole of first rotating shaft 13
There is a keyway 34 being engaged with flat key 34, flat key 34 is slidably connected keyway 34, drives drive bevel gear 11 to rotate by power transmission shaft 8,
Drive bevel gear 11 drives driven wheel of differential 15 to rotate, and then drives the second rotating shaft 15 to rotate, due to being provided with flat key 34, therefore the
When two rotating shafts 15 rotate first rotating shaft 14 will be driven to rotate, so that uniform board 16 rotates, uniform board 16 is stirred positioned at screening frame 3
Sand on the bottom plate of inner chamber, sand is evenly distributed on the inner chamber bottom plate of screening frame 3, avoid sand from concentrating on a certain region
Accumulate so as to influence screening efficiency；
The deflector chute 31 being obliquely installed is fixed with the inwall of right side riser 2, the sand fallen from screening frame 3, which is fallen to, leads
Glided in hopper 31 then along deflector chute 31, gap is provided between the left side of deflector chute 31 and the inwall of left side vertical plate 2, should
Gap constitutes feed opening, and collection frame 32 is provided with below feed opening, for collecting the sand after screening；
Shower nozzle 26 is provided with below the left side of the deflector chute 31, for being sprayed to the sand after screening so that husky
Son, which is got wet, to be blown away, and so as to reduce sand, avoided the waste of sand while also reduced the pollution to environment；
Driving pulley 17 is installed, driving pulley 17 connects driven belt by belt on the left end axis body of the power transmission shaft 8
Wheel 18, the left side of driven pulley 18 connect the 3rd rotating shaft 19, and the right flank of support 36 is fixed in the 3rd rotating shaft 19 rotation connection
Second bearing seat 20, the right-hand member of driven pulley 18 are coaxially fixed with disk 21, and during work, driving pulley 17 is driven by power transmission shaft 8
Rotate, driving pulley 17 is rotated by belt belt wheel driven pulley 18, so as to drive disk 21 to rotate；The lower section of the disk 21
Cylinder body 24 is provided with, cylinder body 24 is arranged on cylinder body base 30, and cylinder body base 30 is fixed on the outer wall of left side vertical plate 2, cylinder body 24
The piston sheet 23 being matched therewith inside is provided with, the right side bias of disk 21 is hinged with connecting rod 22, the other end hinge of connecting rod 22
Take over a job patch 23, bar hole 35 is offered on the top plate of cylinder body 24, to adapt to the swing of connecting rod 22, the lower end of cylinder body 24 or so two
Side is connected to drinking-water pipe 27 and outlet pipe 25, is mounted on check valve on drinking-water pipe 27 and outlet pipe 25, avoids flowing back, its
Middle outlet pipe 25 connects shower nozzle 26, and drinking-water pipe 27 connects water tank 28, and water tank 28 is arranged on water tank base 29, and water tank base 29 is solid
Due to the top surface of base 1, piston sheet 23 is driven to move back and forth up and down by connecting rod 22 when disk 21 rotates, so as to enter to shower nozzle 26
Row supplies water.
The present invention operation principle be：
During work, sand to be screened is added in screening frame 3, starts motor 7, motor 7 drives power transmission shaft 8 to rotate,
Power transmission shaft 8 rotates with moving cam 9, drive bevel gear 11 and driving pulley 17, and cam 9, which rotates, constantly contradicts installing plate 4, so as to
Drive and sieve the husky up-down vibration of frame 3, sand is screened；Drive bevel gear 11 drives driven wheel of differential 15 to rotate, and then drives
Second rotating shaft 15 rotates, and due to being provided with flat key 34, therefore during the second rotating shaft 15 rotation first rotating shaft 14 will be driven to rotate, so that
Uniform board 16 rotates, and uniform board 16 stirs the sand on the inner chamber bottom plate of screening frame 3, sand is evenly distributed in screening frame
On 3 inner chamber bottom plate, sand is avoided to concentrate on a certain region accumulation so as to influence screening efficiency；Driving pulley 17 passes through belt band
Wheel driven pulley 18 rotate, so as to drive disk 21 to rotate, disk 21 rotate when by connecting rod 22 drive piston sheet about 23 it is past
Multiple mobile, so as to be supplied water to shower nozzle 26, shower nozzle 26 is sprayed to the sand after screening so that sand is got wet will not be by
Blow away, so as to reduce sand, avoid the waste of sand while also reduce the pollution to environment.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the involved claim of limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that those skilled in the art should for clarity
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It is appreciated that other embodiment.
Claims (6)
1. a kind of construction site sand sieving machine provided with uniform board, including base (1), the husky frame (3) of sieve and uniform board (16)；It is special
Sign is that the top right side of the base (1) is provided with two pieces of risers (2), and the husky frame (3) of sieve is arranged on two pieces of risers (2)
Between, the bottom plate for sieving husky frame (3) is made up of sieve plate, sieves and supporting plate (4), supporting plate are symmetrically connected with left and right sides of husky frame (3)
(4) riser (2) is stretched out, offers the slotted eye moved up and down for supporting plate (4) on riser (2), supporting plate (4) is located at riser (2)
Transverse slat (5) is provided with below the plate body in outside, transverse slat (5) is fixed on riser (2), is connected between supporting plate (4) and transverse slat (5)
Support spring (6)；The top left side of the base (1) is fixed with support (36), and motor (7) is provided with the top of support (36),
The output end connection power transmission shaft (8) of motor (7), power transmission shaft (8) extend right up to the top of Right side support plate (4), vertical plates on both sides
(2) axle sleeve (10) is connected with upper surface, axle sleeve (10) is set in the periphery of power transmission shaft (8), and power transmission shaft (8) is collateral positioned at two
Cam (9) is mounted on axis body above fagging (4)；The medium position of the power transmission shaft (8) is provided with drive bevel gear
(11) first rotating shaft (13), first rotating shaft, are provided with below drive bevel gear (11) on the bottom plate of screening frame (3) inner chamber
(13) lower end is fixed with a uniform board laterally set (16), is set between uniform board (16) and the inner chamber bottom plate of screening frame (3)
There is gap, the upper surface of first rotating shaft (13) offers axis hole in the axial direction, and the lower end rotation connection of first rotating shaft (13) is solid
The second rotating shaft (15) is provided with above the first bearing seat (14) of screening frame (3) inner chamber bottom plate, first rotating shaft (13), the
Two rotating shafts (15) are plugged in the axis hole of first rotating shaft (13) and can moved up and down, and the axis body periphery of the second rotating shaft (15) is along week
To multiple flat keys (34) are equidistantly fixed with, the keyway being engaged with flat key (34) is offered in the axis hole of first rotating shaft (13)
(34), flat key (34) is slidably connected keyway (34)；The deflector chute (31) being obliquely installed is fixed with the inwall of right side riser (2),
The sand fallen from screening frame (3) falls in deflector chute (31) and glided then along deflector chute (31), a left side for deflector chute (31)
Gap is provided between the inwall of end face and left side vertical plate (2), the gap constitutes feed opening, collection is provided with below feed opening
Frame (32)；Shower nozzle (26) is provided with below the left side of the deflector chute (31)；It is provided with the left end axis body of the power transmission shaft (8)
Driving pulley (17), driving pulley (17) connect driven pulley (18), the left side connection the of driven pulley (18) by belt
Three rotating shafts (19), the 3rd rotating shaft (19) are rotatablely connected the second bearing seat (20) for being fixed on support (36) right flank, driven pulley
(18) right-hand member is coaxially fixed with disk (21)；Cylinder body (24) is provided with below the disk (21), is set in cylinder body (24)
There is the piston sheet (23) being matched therewith, the right side bias of disk (21) is hinged with connecting rod (22), the other end of connecting rod (22)
Hinged piston piece (23), bar hole (35) is offered on the top plate of cylinder body (24), is connected respectively at left and right sides of the lower end of cylinder body (24)
It is connected to drinking-water pipe (27) and outlet pipe (25), wherein outlet pipe (25) connection shower nozzle (26), drinking-water pipe (27) connection water tank (28).
2. the construction site sand sieving machine according to claim 1 provided with uniform board, it is characterised in that the support spring
(6) it is stiffness spring.
3. the construction site sand sieving machine according to claim 1 provided with uniform board, it is characterised in that the flat key (34)
There are four.
4. the construction site sand sieving machine according to claim 1 provided with uniform board, it is characterised in that the cylinder body (24)
On cylinder body base (30), cylinder body base (30) is fixed on the outer wall of left side vertical plate (2).
5. the construction site sand sieving machine according to claim 1 provided with uniform board, it is characterised in that the drinking-water pipe
(27) and on outlet pipe (25) it is mounted on check valve.
6. the construction site sand sieving machine according to claim 1 provided with uniform board, it is characterised in that the water tank (28)
On water tank base (29), water tank base (29) is fixed on the top surface of base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700542.3A CN107442406A (en) | 2017-08-16 | 2017-08-16 | A kind of construction site sand sieving machine provided with uniform board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710700542.3A CN107442406A (en) | 2017-08-16 | 2017-08-16 | A kind of construction site sand sieving machine provided with uniform board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107442406A true CN107442406A (en) | 2017-12-08 |
Family
ID=60492478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710700542.3A Withdrawn CN107442406A (en) | 2017-08-16 | 2017-08-16 | A kind of construction site sand sieving machine provided with uniform board |
Country Status (1)
| Country | Link |
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| CN (1) | CN107442406A (en) |
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| CN108080265A (en) * | 2017-12-27 | 2018-05-29 | 郑州默尔电子信息技术有限公司 | A kind of Chinese medicinal granule two level screening plant |
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| CN108080265A (en) * | 2017-12-27 | 2018-05-29 | 郑州默尔电子信息技术有限公司 | A kind of Chinese medicinal granule two level screening plant |
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| CN108142397A (en) * | 2018-01-17 | 2018-06-12 | 吴剑辉 | A kind of rotary spraying equipment and drugs of the agricultural to farmland vegetable plot |
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| CN108465575A (en) * | 2018-02-21 | 2018-08-31 | 南昌首诺科技有限公司 | A kind of quick spraying equipment and drugs of geological disaster rescue epidemic prevention |
| CN108554776A (en) * | 2018-03-01 | 2018-09-21 | 王立俊 | A kind of equipment that can effectively improve construction material cooling efficiency |
| CN108554776B (en) * | 2018-03-01 | 2021-04-02 | 山东鲁班建设集团总公司 | Equipment capable of effectively improving cooling efficiency of building material |
| CN108262186A (en) * | 2018-03-13 | 2018-07-10 | 南昌首诺科技有限公司 | A kind of geological disaster earthquake region is prevented epidemic spraying equipment and drugs on a large scale |
| CN108579180A (en) * | 2018-04-24 | 2018-09-28 | 佛山市尚柏科技有限公司 | A kind of biological products material multi screening and filtering device |
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Application publication date: 20171208 |
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