CN108163473B - Powder material conveying device - Google Patents
Powder material conveying device Download PDFInfo
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- CN108163473B CN108163473B CN201711456877.1A CN201711456877A CN108163473B CN 108163473 B CN108163473 B CN 108163473B CN 201711456877 A CN201711456877 A CN 201711456877A CN 108163473 B CN108163473 B CN 108163473B
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- bin
- screw
- powder material
- feeding
- air bag
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/26—Screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/26—Screws
- B65G33/30—Screws with a discontinuous helical surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
The invention relates to the field of powder material conveying, and particularly discloses a powder material conveying device which comprises a feeding bin with a filling opening, a discharging bin communicated with the feeding bin, a screw rod arranged in the feeding bin and used for feeding materials to the discharging bin, and an air bag valve positioned in the feeding bin and sleeved on the screw rod; the air bag valve is positioned between the filling opening and the discharging bin. According to the invention, by arranging the air bag valve, in the process of feeding the material to the discharge bin through the screw rod, the powder material extrudes the rubber sleeve of the air bag valve, so that the rubber sleeve of the air bag valve is in an outward tensioning state, the powder material is extruded, the sealing effect is improved, and the sealing between the feeding bin where the air bag valve is located and the feeding bin where the filling opening is located is realized through the extruded powder material; the problem that the existing powder material conveying device is poor in sealing effect and the problem that powder materials are easy to extrude when fed by a screw with a gradually-changing pitch to cause powder material caking is solved; but also can realize continuous feeding.
Description
Technical Field
The invention relates to the technical field related to powder material conveying, in particular to a powder material conveying device.
Background
In the chemical production process, the powder material is generally conveyed to a high-pressure system from a normal pressure tank. The conveying method generally adopted is composed of the following two methods.
The first method is a double-tank alternation method, in order to ensure that powder materials are continuously conveyed to a high-pressure system, two normal pressure tanks are generally adopted for supplying materials to the high-pressure system, and when the powder materials in one normal pressure tank are conveyed, the other normal pressure tank is switched to supply materials to the high-pressure system; by adopting the feeding mode, two normal pressure tanks need to be frequently switched to feed the high-pressure system, the operation is complex, and the short feeding interruption exists in the switching process.
The second is a screw feeding mode with a gradually-changed screw pitch, and the screw pitch of the screw is gradually reduced along the feeding direction, so that the material is gradually extruded; when the screw pitch is not properly arranged, the problem of extrusion agglomeration caused by excessive extrusion of powder materials can be caused sometimes; sometimes, the extrusion force between the materials is too small, so that the sealing effect is not good.
Disclosure of Invention
The invention aims to provide a powder material conveying device which can ensure the sealing effect and prevent the material from being excessively extruded to cause caking.
In order to achieve the purpose, the invention adopts the following technical scheme:
a powder material conveying device comprises a feeding bin with a filling opening, a discharging bin communicated with the feeding bin, a screw rod arranged in the feeding bin and used for feeding materials to the discharging bin, and an air bag valve which is arranged in the feeding bin and sleeved on the screw rod; the air bag valve is positioned between the filling opening and the discharging bin.
Furthermore, the screw rods comprise a first screw rod, a second screw rod and a third screw rod which are sequentially distributed along the axial direction of the screw rods, and the outer diameter of the second screw rod is smaller than that of the first screw rod and that of the third screw rod; the air bag valve is sleeved on the second screw rod.
Through dividing the screw rod into the three-section setting, and make the external diameter that is in the middle second screw rod be less than the first screw rod that is located second screw rod axial both ends, the external diameter of third screw rod, the feed bin that makes the second screw rod correspond when carrying the powder material is full of by the powder material, make the pressure increase in the feed bin that the second screw rod corresponds, and then make the second screw rod, produce pressure differential between the feed bin that the third screw rod corresponds feed bin and first screw rod, the powder material will be extruded when the second screw rod is being passed through, further improvement sealed effect.
Further, the pitch of the first screw is equal to the pitch of the second screw and equal to the pitch of the third screw.
Further, the device also comprises an air inflation and deflation component communicated with the discharge bin through an air transmission pipeline, a first measuring component used for measuring the pressure in the air bag valve and a second measuring component used for measuring the pressure in the discharge bin.
The pressure in the feeding bin region corresponding to the second screw and the pressure in the discharging bin are monitored in real time through the first measuring component and the second measuring component, the pressure in the feeding bin region corresponding to the second screw is equal to the pressure in the discharging bin when feeding is guaranteed, and feeding to the discharging bin can be continuously achieved through the feeding bin. When the pressure in the feeding bin region corresponding to the second screw is inconsistent with the pressure in the discharging bin, partial air in the discharging bin can be inflated or discharged into the discharging bin through the inflation and deflation assembly, so that the pressure in the feeding bin region corresponding to the second screw is consistent with the pressure in the discharging bin.
Further, the device also comprises a controller, and the first measuring assembly and the second measuring assembly are electrically connected to the controller.
Whether the pressure in the feeding bin area corresponding to the second screw is consistent with the pressure in the discharging bin or not is judged in real time through the controller, so that the pressure in the discharging bin can be adjusted through the air charging and discharging assembly in time.
Furthermore, a stop valve is arranged on the gas transmission pipeline and connected to the controller. The working state of the stop valve is controlled by the controller, namely the stop valve is opened or closed, so that the pressure in the discharging bin can be timely adjusted by the air charging and discharging assembly.
Further, the first measuring component is a barometer or a pressure sensor; the second measuring component is a barometer or a pressure sensor.
Further, the screw rod is connected with a driving assembly for driving the screw rod to rotate, and the driving assembly is electrically connected to the controller. The screw rod is driven to rotate continuously through the driving assembly, so that the material is supplied to the discharging bin continuously through the screw rod.
Further, the discharging bin is provided with a discharging port, and the discharging port is provided with a discharging stop valve electrically connected to the controller. When the pressure in the air bag valve is consistent with the pressure in the discharge bin, the discharge stop valve is opened, and the powder material is discharged out of the discharge bin through the discharge port.
Further, the filling opening is connected with a feeding bin. Can realize the continuous feeding to the feeding bin through the feeding bin.
The invention has the beneficial effects that: according to the invention, by arranging the air bag valve, in the process of feeding materials to the discharging bin through the screw rod, the powder materials extrude the rubber sleeve of the air bag valve, so that the rubber sleeve of the air bag valve is in an outward tensioning state; the powder material is extruded, so that the sealing effect is improved, and the sealing between the feeding bin with the air bag valve and the feeding bin with the side of the filling opening is realized through the extruded powder material; the problem that the existing powder material conveying device is poor in sealing effect and the problem that powder materials are easy to agglomerate due to overlarge extrusion force when a screw with a gradually-changing pitch is adopted for feeding is solved; but also can realize continuous feeding.
And the air bag valve is arranged between the filling opening and the discharging bin, so that the sealing effect can be ensured not to be damaged by the filling opening.
Drawings
Fig. 1 is a schematic structural diagram of a powder material conveying device according to an embodiment of the present invention.
In the figure:
1. a feeding bin; 11. a filling opening; 2. a discharging bin; 21. a discharge port; 3. a screw; 31. a first screw; 32. a second screw; 33. a third screw; 4. an air bag valve; 51. a gas pipeline; 52. a stop valve; 61. a first measurement assembly; 62. a second measurement assembly; 7. a drive assembly; 8. a discharge stop valve; 9. a feeding bin; 10. a flow meter.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
As shown in fig. 1, the present embodiment provides a powder material conveying device, which includes a feeding bin 1 provided with a filling opening 11, a discharging bin 2 communicated with the feeding bin 1, a screw rod 3 arranged in the feeding bin 1 and used for feeding materials to the discharging bin 2, and an air bag valve 4 located in the feeding bin 1 and sleeved on the screw rod 3; the air bag valve 4 is positioned between the filling opening 11 and the discharging bin 2.
In the embodiment, by arranging the air bag valve 4, in the process of feeding the material to the discharging bin 2 through the screw 3, the powder material extrudes the rubber sleeve of the air bag valve 4, so that the rubber sleeve of the air bag valve 4 is in an outward tensioning state; the powder material is extruded, the sealing effect is improved, and the sealing between the feeding bin 1 with the air bag valve 4 and the feeding bin 1 with the side of the filling opening 11 is realized through the extruded powder material; the problem of current powder material conveyor seal effect not good is solved, can guarantee moreover that the material can not excessively be extruded and the caking phenomenon appears, can realize continuous pay-off simultaneously. And the air bag valve 4 is arranged between the filling opening 11 and the discharging bin 2, so that the sealing effect can be ensured not to be damaged by the filling opening 11.
In this embodiment, the screw 3 includes a first screw 31, a second screw 32 and a third screw 33 sequentially distributed along the axial direction thereof, and the outer diameter of the second screw 32 is smaller than the outer diameters of the first screw 31 and the third screw 33; the air bag valve 4 is sleeved on the second screw 32.
Through dividing the screw rod 3 into three sections, and making the outer diameter of the second screw rod 32 in the middle smaller than the outer diameters of the first screw rod 31 and the third screw rod 33 which are positioned at the two axial ends of the second screw rod 32, the feeding bin 1 corresponding to the second screw rod 32 is filled with the powder material when the powder material is conveyed, the pressure in the feeding bin 1 corresponding to the second screw rod 32 is increased, and further a pressure difference is generated between the feeding bin 1 corresponding to the first screw rod 31 and the feeding bin 1 corresponding to the second screw rod 32 and the third screw rod 33, the powder material is extruded when passing through the second screw rod 32, and the sealing effect is further improved.
In this embodiment, the pitch of the first screw 31 is equal to the pitch of the second screw 32 and equal to the pitch of the third screw 33. In the process of conveying the powder material through the screw 3, the powder material is not excessively extruded due to the change of the screw pitch, the sealing effect is ensured, and the problem that the powder material is easily agglomerated due to the overlarge extrusion force during the feeding of the screw with the gradually-changed screw pitch is solved.
The filling opening 11 is connected with a feeding bin 9. Through locating in the feed bin 1 that first screw rod 31 corresponds with filler hole 11, can guarantee that sealed effect is not destroyed by adding feed bin 9 to can realize through adding the continuous feeding to feed bin 1 in feed bin 9.
The powder material conveying device of the embodiment further includes an inflation and deflation assembly (not shown in the figure) communicated with the discharge bin 2 through a gas transmission pipeline 51, a first measurement assembly 61 for measuring the pressure in the air bag valve 4, a second measurement assembly 62 for measuring the pressure in the bin 2, and a controller (not shown in the figure), wherein the first measurement assembly 61 and the second measurement assembly 62 are electrically connected to the controller.
Pressure in the gasbag valve 4 and the pressure in the discharge bin 2 are monitored in real time through first measuring component 61 and second measuring component 62 for pressure in the gasbag valve 4 equals the pressure in the discharge bin 2 when guaranteeing the feed, realize that feed bin 1 can be continuous to the discharge bin 2 feed. When the pressure in the air bag valve 4 is inconsistent with the pressure in the discharge bin 2, the air can be inflated into the discharge bin 2 or part of air in the discharge bin 2 can be discharged through the inflation and deflation assembly, so that the pressure in the air bag valve 4 is consistent with the pressure in the discharge bin 2. Whether the pressure in the air bag valve 4 is consistent with the pressure in the discharge bin 2 or not is judged in real time through the controller, so that the pressure in the discharge bin 2 can be adjusted through the inflation and deflation assembly in time.
The gas transmission pipeline 51 is provided with a stop valve 52, the stop valve 52 is connected to the controller, the working state of the stop valve 52 is controlled through the controller, namely, the stop valve 52 is opened or closed, and the pressure in the discharging bin 2 is timely adjusted through the gas charging and discharging assembly.
The first measuring component 61 is a barometer or a pressure sensor; the second measurement component 62 is a barometer or a pressure sensor. In this embodiment, the first measuring assembly 61 and the second measuring assembly 62 are both barometers.
In this embodiment, the screw rod 3 is connected to a driving assembly 7 for driving the screw rod 3 to rotate, and the driving assembly 7 is electrically connected to the controller. The driving component 7 is a motor or other structures capable of driving the screw rod 3 to rotate. One end of the screw rod 3 is connected with the driving component 7, and the other end of the screw rod penetrates through the feeding bin 1. The driving component 7 and the discharging bin 2 are respectively positioned at two ends of the screw rod 3.
The discharging bin 2 is provided with a discharging port 21, and the discharging port 21 is provided with a discharging stop valve 8 electrically connected with the controller. The working state of the discharge stop valve 8 is controlled by the controller, namely the discharge stop valve 8 is closed or opened.
In this embodiment, the gas transmission pipeline 51 is provided with the flowmeter 10, the flowmeter 10 is connected to the controller, and when the pressure in the discharge bin 2 is adjusted through the inflation and deflation assembly, whether gas flows through the gas transmission pipeline 51 can be detected in real time through the flowmeter 10, so that the inflation and deflation assembly can complete inflation and deflation work on the discharge bin 2.
The working process of the powder material conveying device in the embodiment is as follows:
when the material is not supplied, the stop valve 52 and the discharge stop valve 8 are both in a closed state. The feeding bin 1 is continuously fed through the feeding bin 9, the powder material is conveyed through the screw rods 3, when the powder material is conveyed to the position of the second screw rod 32, the powder material extrudes the rubber sleeve of the air bag valve 4 and moves towards the third screw rod 33, the powder material is extruded due to the fact that the outer diameter of the second screw rod 32 is smaller than the outer diameters of the first screw rod 31 and the third screw rod 33 and the action of the air bag valve 4, and the sealing between the feeding bin 1 corresponding to the first screw rod 31 and the feeding bin 1 corresponding to the second screw rod 32 is achieved through the air bag valve 4; the discharge bin 2 is in a sealed state because the stop valve 52 and the discharge stop valve 8 are both in a closed state; powder materials are continuously conveyed to the discharging bin 2 under the action of the screw rods 3, the pressure in the discharging bin 2 is gradually increased, and the pressure in the feeding bin 1 corresponding to the second screw rods 32 and the third screw rods 33 is also gradually increased. When the pressure in the air bag valve 4 is consistent with the pressure in the discharge bin 2, the discharge stop valve 8 is opened, and the powder material is discharged out of the discharge bin 2 through the discharge port 21.
In-process through discharge gate 21 discharge powder material, if the inconsistent condition of pressure in the gasbag valve 4 and the pressure in the feed bin 2 appears, judge whether pressure in the gasbag valve 4 is unanimous with the pressure in the feed bin 2 in real time through the controller this moment, so that in time through filling the pressure that the gassing subassembly adjusted the feed bin 2, guarantee the ejection of compact that discharge gate 21 can be continuous, and can guarantee can not lead to the powder material to be excessively extruded and the problem of caking because of the too big pressure in the feed bin 2.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The powder material conveying device is characterized by comprising a feeding bin (1) provided with a filling opening (11), a discharging bin (2) communicated with the feeding bin (1), a screw rod (3) arranged in the feeding bin (1) and used for feeding materials to the discharging bin (2), and an air bag valve (4) positioned in the feeding bin (1) and sleeved on the screw rod (3); the air bag valve (4) is positioned between the filling opening (11) and the discharging bin (2);
in the process of feeding materials to the discharging bin (2) through the screw (3), the powder materials extrude the rubber sleeve of the air bag valve (4), so that the rubber sleeve of the air bag valve (4) is in an outward tensioning state; the powder material is extruded, the sealing effect is improved, and the sealing between the feeding bin (1) where the air bag valve (4) is located and the feeding bin (1) where the filling opening (11) is located is realized through the extruded powder material;
the screw (3) comprises a first screw (31), a second screw (32) and a third screw (33) which are sequentially distributed along the axial direction of the screw, and the outer diameter of the second screw (32) is smaller than that of the first screw (31) and that of the third screw (33); the air bag valve (4) is sleeved on the second screw rod (32).
2. Powder material conveying device according to claim 1, characterized in that the pitch of the first screw (31) is equal to the pitch of the second screw (32) and equal to the pitch of the third screw (33).
3. The powder material conveying device according to claim 1, further comprising an air charging and discharging assembly communicated with the discharging bin (2) through an air conveying pipeline (51), a first measuring assembly (61) for measuring the pressure in the air bag valve (4), and a second measuring assembly (62) for measuring the pressure in the discharging bin (2).
4. The powder material conveying device according to claim 3, further comprising a controller, wherein the first measuring assembly (61) and the second measuring assembly (62) are electrically connected to the controller.
5. The powder material conveying device according to claim 4, wherein a stop valve (52) is arranged on the gas conveying pipeline (51), and the stop valve (52) is connected to the controller.
6. The powder material conveying device according to claim 4, wherein the first measuring component (61) is a barometer or a pressure sensor; the second measuring component (62) is a gas pressure gauge or a pressure sensor.
7. The powder material conveying device according to claim 4, wherein the screw (3) is connected with a driving component (7) for driving the screw (3) to rotate, and the driving component (7) is electrically connected to the controller.
8. The powder material conveying device according to claim 4, wherein the discharging bin (2) is provided with a discharging port (21), and the discharging port (21) is provided with a discharging stop valve (8) electrically connected to the controller.
9. Powder material conveying device according to claim 1, characterized in that the filling opening (11) is connected with a feeding bin (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711456877.1A CN108163473B (en) | 2017-12-28 | 2017-12-28 | Powder material conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711456877.1A CN108163473B (en) | 2017-12-28 | 2017-12-28 | Powder material conveying device |
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| Publication Number | Publication Date |
|---|---|
| CN108163473A CN108163473A (en) | 2018-06-15 |
| CN108163473B true CN108163473B (en) | 2020-05-12 |
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| CN201711456877.1A Active CN108163473B (en) | 2017-12-28 | 2017-12-28 | Powder material conveying device |
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| CN206221891U (en) * | 2016-11-15 | 2017-06-06 | 中建八局第四建设有限公司 | A kind of duct closing type device |
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| CN206327817U (en) * | 2016-12-21 | 2017-07-14 | 万载县辉明化工有限公司 | A kind of novel white carbon black powder automatic conveying system |
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| CN201154843Y (en) * | 2007-11-23 | 2008-11-26 | 石家庄工大化工设备有限公司 | Pressure type screw feeder for powder material |
| CN101602438A (en) * | 2009-05-05 | 2009-12-16 | 中冶赛迪工程技术股份有限公司 | Spiral powder conveying device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108163473A (en) | 2018-06-15 |
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