CN109502349B - Pneumatic conveying and static removing receiving bin for powder and granular materials and static removing method - Google Patents
Pneumatic conveying and static removing receiving bin for powder and granular materials and static removing method Download PDFInfo
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- CN109502349B CN109502349B CN201811572018.3A CN201811572018A CN109502349B CN 109502349 B CN109502349 B CN 109502349B CN 201811572018 A CN201811572018 A CN 201811572018A CN 109502349 B CN109502349 B CN 109502349B
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- receiving bin
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- 230000003068 static effect Effects 0.000 title claims abstract description 67
- 239000000843 powder Substances 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000008187 granular material Substances 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 62
- 239000002184 metal Substances 0.000 claims abstract description 56
- 239000000428 dust Substances 0.000 claims abstract description 32
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 230000009471 action Effects 0.000 claims description 6
- 238000005137 deposition process Methods 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 7
- 239000007787 solid Substances 0.000 abstract description 7
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Classifications
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/36—Arrangements of containers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05F—STATIC ELECTRICITY; NATURALLY-OCCURRING ELECTRICITY
- H05F3/00—Carrying-off electrostatic charges
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Conveyors (AREA)
- Air Transport Of Granular Materials (AREA)
- Elimination Of Static Electricity (AREA)
Abstract
The invention relates to a powder and granular material pneumatic conveying static-removing receiving bin which comprises a storage groove, a sealing cover, a dust filtering device, static neutralizers, conductive metal nets and a control circuit, wherein the upper end face of the storage groove is connected with the sealing cover and forms a bearing cavity of a closed cavity structure, the conductive metal nets are embedded in the bearing cavity and are coaxially distributed between the storage groove, each conductive metal net is electrically connected with at least one static neutralizer, the dust filtering device is positioned in the bearing cavity and is connected with the lower end face of the sealing cover, and an exhaust port is communicated with the bearing cavity through the dust filtering device. The invention can effectively meet the requirements of pneumatic conveying and storing operation of various solid powdery materials on one hand, and effectively eliminates static charges carried in the materials in the conveying and storing processes of the materials on the other hand, has high static eliminating operation efficiency, and can effectively realize comprehensive and effective elimination of static carried in the materials in a larger range.
Description
Technical Field
The invention relates to a pneumatic conveying and static removing receiving bin for powder and granular materials and a static removing method, and belongs to the technical field of material conveying.
Background
In the current conveying of solid powder and other materials in a pneumatic mode, since the materials collide with each other in the pneumatic conveying process of a pipeline, a large amount of static electricity is generated due to friction, if the static electricity can not be eliminated timely and effectively, on one hand, the efficiency of conveying the materials can be seriously affected, the materials are attached to conveying equipment and the materials are solidified into blocks due to the static electricity, on the other hand, serious electric shock accidents are caused to peripheral equipment or staff due to static electricity discharge when the static electricity is serious, even serious safety accidents such as legal fire or explosion and the like are caused in the conveying process of the materials, the traditional static electricity eliminating method is to carry out grounding treatment on the material conveying or carrying equipment through grounding wires, the purpose of static electricity elimination in the conveying process of the materials is achieved, but the operation efficiency of the mode is relatively underground, and the static electricity carried in the conveying process of the materials such as the solid powder is scattered along with airflow, the fluidity is extremely strong, so that the static electricity carried in the materials can not be eliminated timely and effectively, and great static electricity safety hazards exist when the solid powder and other materials are conveyed currently, and therefore, a brand new static electricity eliminating equipment such as the solid powder and the static electricity eliminating method is required to be developed, and the actual use is satisfied
Disclosure of Invention
In order to solve the defects in the prior classification technology, the invention provides a pneumatic conveying and static removing receiving bin and method for powder and granular materials.
In order to achieve the above-mentioned effects, a powder and granule material pneumatic conveying and static removing receiving bin and a method are provided, wherein the method comprises the following steps:
the utility model provides a powder, grain material air conveying destatics and receives storehouse, includes storing groove, sealed lid, dust filter equipment, static neutralizer, conductive metal net and control circuit, wherein the storing groove is the cross section and is "U" style of calligraphy groove form structure, its up end is connected and constitutes the bearing chamber of closed cavity structure with sealed lid, sealed cover is equipped with at least one feed inlet and at least one gas vent, wherein feed inlet and storing groove coaxial distribution, and feed inlet and gas vent all communicate with each other with bearing chamber, conductive metal net at least two, inlay in bearing chamber and follow bearing chamber axis direction top-down equipartition, and conductive metal net and storing groove coaxial distribution, in the conductive metal net, every conductive metal net all with at least one static neutralizer interconnect, electrostatic neutralizer inlays in storing inslot surface, and each static neutralizer interconnect, dust filter equipment is located bearing chamber and with sealed lower terminal surface interconnect, and the gas vent communicates each other through dust filter equipment and bearing chamber, filter equipment and conductive metal net minimum spacing be the high-efficient control groove 1% -highly efficient between the conductive metal net and the static electricity neutralizer is located outside storing groove and each static filter equipment, and electrical filter equipment respectively.
Further, the lower end surface of the storage tank is provided with at least one discharge hole, and the outer surface of the bottom of the storage tank is provided with a bearing mechanism.
Further, the bearing mechanism is any one of supporting legs, bearing frames, bearing platforms and travelling wheels.
Further, the mesh aperture of the conductive metal net is 1-10 mm, and the mesh area of the conductive metal net is 80-95% of the area of the conductive metal net list.
Further, the conductive metal net is connected with the inner surface of the storage groove through an insulating block, the insulating block is connected with the inner surface of the storage groove in a sliding manner through a guide sliding rail, and the guide sliding rail is uniformly distributed around the axis of the storage groove and is mutually parallel to the axis of the storage groove.
Further, the feeding port and the bearing cavity are communicated with each other through a flow guide pipe, the diameter of the upper end face of the flow guide pipe is not more than 1.5 times of the diameter of the feeding port, the diameter of the lower end face of the flow guide pipe is 3-10 times of the diameter of the upper end face of the flow guide pipe, and not more than 80% of the diameter of the storage tank, the height of the flow guide pipe is 1% -3% of the effective height of the storage tank, and the distance between the lower end face of the flow guide pipe and the uppermost conductive metal net in the storage tank is 1% -10% of the effective height of the storage tank.
Further, at least one level gauge is additionally arranged in the storage groove, and the level gauge is electrically connected with the control circuit.
Further, at least one grounding wire is arranged in the storage groove, the front end face of the grounding wire is positioned outside the storage groove and provided with a grounding bolt, the rear end face of the grounding wire is positioned in the storage groove and is respectively and electrically connected with each conductive metal net through an electronic switch, and the electronic switch is respectively and electrically connected with the control circuit.
Further, the control circuit is a circuit system based on a singlechip or a programmable controller.
The static eliminating method for the powder and particle material pneumatic conveying static eliminating receiving bin includes the following steps:
the material is firstly conveyed into the bearing cavity through the feed inlet of the bearing cavity by an external pneumatic conveying pipeline, then the material is deposited in the bearing cavity from top to bottom along the axis of the storage groove under the action of gas driving and the action of self gravity of the material, in the material deposition process, the air flow for conveying the material is purified by the dust filtering device and then discharged from the bearing cavity, the material deposition efficiency is prevented from being influenced by the air flow, meanwhile, the material sequentially passes through all conductive metal nets in the deposition process, on one hand, all the conductive metal nets are respectively and electrically connected with the electrostatic neutralizer, so that all the conductive metal nets carry charges, when the material passes through the conductive metal nets, the static carried in the material and the charges carried on the conductive metal nets are mutually neutralized, thereby achieving the purpose of eliminating the precision, and on the other hand, when the electrostatic neutralizer stops operating, the static carried in the material passing through the conductive metal nets is directly guided out of the bearing cavity by all the conductive metal nets through the grounding wires and is grounded, thereby achieving the purpose of eliminating the static of the material.
The invention has simple structure, flexible and convenient use and good universality, can effectively meet the requirements of pneumatic conveying and storing operation of various solid powdery materials, and can effectively eliminate the static charges carried in the materials in the material conveying and storing process, and the static eliminating operation efficiency is high, so that the static carried in the materials in a larger range can be effectively eliminated comprehensively and effectively.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1 is a schematic diagram of the structure of the present invention;
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
The receiving bin for pneumatic conveying and static removing of powder and granular materials comprises a storage tank 1, a sealing cover 2, a dust filtering device 3, static neutralizers 4, conductive metal nets 5 and a control circuit 6, wherein the storage tank 1 is of a groove-shaped structure with a U-shaped cross section, the upper end face of the storage tank is connected with the sealing cover 2 and forms a bearing cavity 7 of a closed cavity structure, at least one feeding port 21 and at least one exhaust port 22 are arranged on the sealing cover 2, the feeding port 21 and the storage tank 1 are coaxially distributed, the feeding port 21 and the exhaust ports 22 are communicated with the bearing cavity 7, at least two conductive metal nets 5 are embedded in the bearing cavity 7 and are uniformly distributed from top to bottom along the axial direction of the bearing cavity 7, the conductive metal nets 5 are coaxially distributed with the storage tank 1, each conductive metal net 5 is electrically connected with at least one static neutralizer 4, the static neutralizers 4 are embedded in the inner surface of the storage tank 1, the static neutralizers 4 are mutually connected in parallel, the filtering device 3 is positioned in the bearing cavity 7 and is coaxially connected with the exhaust port 2, the dust filtering device 3 is connected with the dust filtering device 1 at the highest level, and the dust is communicated with the dust filtering device 1, and the dust filtering device is positioned between the dust filtering device 3 and the dust filtering device 1 and the dust filtering device is the dust filtering device 1, and the dust is completely communicated with the dust filtering device 1, and the dust is separated from the dust is discharged from the dust through the dust filtering device 1, and the dust is discharged from the dust.
In this embodiment, the lower end surface of the storage tank 1 is provided with at least one discharge port 23, the outer surface of the bottom of the storage tank 1 is provided with a bearing mechanism 24, and the bearing mechanism 24 is any one of a supporting leg, a bearing frame, a bearing table and a travelling wheel.
Meanwhile, the mesh aperture of the conductive metal net 5 is 1-10 mm, the mesh area of the conductive metal net 5 is 80-95% of the surface area of the conductive metal net 5, the conductive metal net 5 and the inner surface of the storage tank 1 are connected with each other through an insulating block 8, the insulating block 8 and the inner surface of the storage tank 1 are connected with each other in a sliding manner through a guide sliding rail 9, and the guide sliding rails 9 are uniformly distributed around the axis of the storage tank 1 and are distributed parallel to the axis of the storage tank 1.
In addition, the feeding hole 21 and the bearing cavity 7 are communicated with each other through the flow guide pipe 10, the diameter of the upper end face of the flow guide pipe 10 is not more than 1.5 times of the diameter of the feeding hole 21, the diameter of the lower end face of the flow guide pipe 10 is 3-10 times of the diameter of the upper end face of the flow guide pipe 10, and is not more than 80% of the diameter of the storage groove 1, the height of the flow guide pipe 10 is 1% -3% of the effective height of the storage groove 1, and the distance between the lower end face of the flow guide pipe 10 and the uppermost conductive metal net 5 in the storage groove 1 is 1% -10% of the effective height of the storage groove 1.
Further preferably, at least one level gauge 11 is additionally arranged in the storage tank 1, the level gauge 11 is electrically connected with the control circuit 6, at least one grounding wire 12 is arranged in the storage tank 1, the front end face of the grounding wire 12 is positioned outside the storage tank and provided with a grounding bolt 13, the rear end face of the grounding wire 12 is positioned in the storage tank 1 and is electrically connected with each conductive metal net 5 through an electronic switch 14, and the electronic switch 14 is electrically connected with the control circuit 6.
It should be noted that the control circuit 6 is a circuit system based on a single chip microcomputer or a programmable controller.
The static eliminating method for the powder and particle material pneumatic conveying static eliminating receiving bin includes the following steps:
the material is firstly conveyed into the bearing cavity through the feed inlet of the bearing cavity by an external pneumatic conveying pipeline, then the material is deposited in the bearing cavity from top to bottom along the axis of the storage groove under the action of gas driving and the action of self gravity of the material, in the material deposition process, the air flow for conveying the material is purified by the dust filtering device and then discharged from the bearing cavity, the material deposition efficiency is prevented from being influenced by the air flow, meanwhile, the material sequentially passes through all conductive metal nets in the deposition process, on one hand, all the conductive metal nets are respectively and electrically connected with the electrostatic neutralizer, so that all the conductive metal nets carry charges, when the material passes through the conductive metal nets, the static carried in the material and the charges carried on the conductive metal nets are mutually neutralized, thereby achieving the purpose of eliminating the precision, and on the other hand, when the electrostatic neutralizer stops operating, the static carried in the material passing through the conductive metal nets is directly guided out of the bearing cavity by all the conductive metal nets through the grounding wires and is grounded, thereby achieving the purpose of eliminating the static of the material.
The invention has simple structure, flexible and convenient use and good universality, can effectively meet the requirements of pneumatic conveying and storing operation of various solid powdery materials, and can effectively eliminate the static charges carried in the materials in the material conveying and storing process, and the static eliminating operation efficiency is high, so that the static carried in the materials in a larger range can be effectively eliminated comprehensively and effectively.
The foregoing has shown and described the basic principles and main features of the present invention and the advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The pneumatic conveying and static removing receiving bin for powder and granular materials is characterized by comprising a storage groove, a sealing cover, a dust filtering device, a static neutralizer, a conductive metal net and a control circuit, wherein the storage groove is of a U-shaped groove-shaped structure with a cross section, the upper end face of the storage groove is connected with the sealing cover to form a bearing cavity of a closed cavity structure, the sealing cover is provided with at least one feed inlet and at least one exhaust outlet, the feed inlet and the storage groove are coaxially distributed, the feed inlet and the exhaust outlet are communicated with the bearing cavity, at least two conductive metal nets are embedded in the bearing cavity and uniformly distributed from top to bottom along the axis direction of the bearing cavity, the dust filtering device is positioned in the bearing cavity and is connected with the lower end face of the sealing cover, the exhaust port is communicated with the bearing cavity through the dust filtering device, the minimum distance between the dust filtering device and the conductive metal net is 1% -10% of the effective height of the storage groove, and the control circuit is positioned outside the storage groove and is respectively and electrically connected with the dust filtering device and the electrostatic neutralizers;
the lower end surface of the storage tank is provided with at least one discharge hole, and the outer surface of the bottom of the storage tank is provided with a bearing mechanism;
the aperture of the conductive metal net is 1-10 mm, and the area of the conductive metal net aperture is 80-95% of the area of the conductive metal net aperture;
the static removing method of the powder and particle material pneumatic conveying static removing receiving bin comprises the following steps:
the material is firstly conveyed into the bearing cavity through the feed inlet of the bearing cavity by an external pneumatic conveying pipeline, then the material is deposited in the bearing cavity from top to bottom along the axis of the storage groove under the action of gas driving and the action of self gravity of the material, in the material deposition process, the air flow for conveying the material is purified by the dust filtering device and then discharged from the bearing cavity, the material deposition efficiency is prevented from being influenced by the air flow, meanwhile, the material sequentially passes through all conductive metal nets in the deposition process, on one hand, all the conductive metal nets are respectively and electrically connected with the static neutralizer, so that all the conductive metal nets carry charges, when the material passes through the conductive metal nets, the static carried in the material and the charges carried on the conductive metal nets are mutually neutralized, thereby achieving the purpose of eliminating the static, and on the other hand, when the static neutralizer stops operating, the static carried in the material passing through the conductive metal nets is directly guided out of the bearing cavity by all the conductive metal nets through the grounding wires and is grounded, thereby achieving the purpose of eliminating the static of the material.
2. The pneumatic conveying and static removing receiving bin for powder and granular materials according to claim 1, wherein the receiving bin is characterized in that: the bearing mechanism is any one of supporting legs, bearing frames, bearing platforms and travelling wheels.
3. The pneumatic conveying and static removing receiving bin for powder and granular materials according to claim 1, wherein the receiving bin is characterized in that: the conductive metal net is connected with the inner surface of the storage tank through the insulating block, the insulating block is connected with the inner surface of the storage tank in a sliding manner through the guide sliding rail, and the guide sliding rail is uniformly distributed around the axis of the storage tank and is mutually parallel to the axis of the storage tank.
4. The pneumatic conveying and static removing receiving bin for powder and granular materials according to claim 1, wherein the receiving bin is characterized in that: the feeding port and the bearing cavity are communicated with each other through a flow guide pipe, the diameter of the upper end face of the flow guide pipe is not more than 1.5 times of the diameter of the feeding port, the diameter of the lower end face of the flow guide pipe is 3-10 times of the diameter of the upper end face of the flow guide pipe, and not more than 80% of the diameter of the storage tank, the height of the flow guide pipe is 1% -3% of the effective height of the storage tank, and the distance between the lower end face of the flow guide pipe and the uppermost conductive metal net in the storage tank is 1% -10% of the effective height of the storage tank.
5. The pneumatic conveying and static removing receiving bin for powder and granular materials according to claim 1, wherein the receiving bin is characterized in that: at least one level gauge is additionally arranged in the storage groove, and the level gauge is electrically connected with the control circuit.
6. The pneumatic conveying and static removing receiving bin for powder and granular materials according to claim 1, wherein the receiving bin is characterized in that: the storage tank is internally provided with at least one grounding wire, the front end face of the grounding wire is positioned outside the storage tank and is provided with a grounding bolt, the rear end face of the grounding wire is positioned in the storage tank and is respectively and electrically connected with each conductive metal net through an electronic switch, and the electronic switch is respectively and electrically connected with a control circuit.
7. The pneumatic conveying and static removing receiving bin for powder and granular materials according to claim 1, wherein the receiving bin is characterized in that: the control circuit is a circuit system based on a singlechip or a programmable controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811572018.3A CN109502349B (en) | 2018-12-21 | 2018-12-21 | Pneumatic conveying and static removing receiving bin for powder and granular materials and static removing method |
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| CN201811572018.3A CN109502349B (en) | 2018-12-21 | 2018-12-21 | Pneumatic conveying and static removing receiving bin for powder and granular materials and static removing method |
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| CN109502349B true CN109502349B (en) | 2024-03-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110592586A (en) * | 2019-10-29 | 2019-12-20 | 岗春激光科技（江苏）有限公司 | Powder feeding device |
| CN115196349B (en) * | 2022-07-20 | 2024-01-26 | 江苏大学 | Method and device for removing static electricity for powder pneumatic conveying system |
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| JPH06124792A (en) * | 1992-10-13 | 1994-05-06 | Kasuga Denki Kk | Static eliminating electrode |
| CN203708614U (en) * | 2014-01-07 | 2014-07-09 | 江西恒兴源化工有限公司 | Static elimination apparatus for insoluble sulfur production line discharging port |
| CN204377237U (en) * | 2015-02-06 | 2015-06-03 | 洋紫荆油墨（河北）有限公司 | A kind of electrostatic elimination system for solvent composite ink workshop |
| CN206126323U (en) * | 2016-09-13 | 2017-04-26 | 扬中市华能电力设备有限公司 | Pump hydrodynamic float pneumatic conveyor |
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