CN112320360A - Positive pressure conveying method for light powder and granular material - Google Patents
Positive pressure conveying method for light powder and granular material Download PDFInfo
- Publication number
- CN112320360A CN112320360A CN202010010878.9A CN202010010878A CN112320360A CN 112320360 A CN112320360 A CN 112320360A CN 202010010878 A CN202010010878 A CN 202010010878A CN 112320360 A CN112320360 A CN 112320360A
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- Prior art keywords
- pipeline
- sending tank
- conveying
- positive pressure
- feeding
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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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
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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
- 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
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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
- 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
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
A positive pressure conveying method for light powder and granular materials comprises the steps that materials stored in a source bin are conveyed to a sending tank through a feeding pipe, and the sending tank conveys the materials to a target bin through a conveying pipeline and a pulling pipe by conveying gas; during the process, a pressurizing air pipeline and an air pipeline are led out from a conveying pipeline in front of the laval pipe, and the other end of the pressurizing air pipeline is connected to the sending tank to pressurize the sending tank; the gas transmission pipeline is internally provided with a gas suction nozzle, a gas suction pipeline is connected to the sending tank from the gas suction nozzle, the sending tank is sprayed and sucked to realize accelerated feeding, and meanwhile, the gas is exhausted to the target bin through a gas exhaust pipeline; the positive pressure conveying of the light powder and granular materials is realized under the combined action of pressurizing the sending tank and sucking the sending tank to realize the acceleration feeding.
Description
Technical Field
The invention relates to a material conveying technology, in particular to a positive pressure conveying method for light powder and granular materials.
Background
Light materials, such as fumed silica, are difficult to fall into a conveying system in the case of positive pressure conveying due to their low bulk density, resulting in insufficient conveying capacity.
Most fumed silica conveying system baits can only be conveyed by a Venturi jet suction method or a negative pressure suction method, as shown in figure 1: the storage bin 10 passes through the feed hopper 20, and the injection feeder 30 generates a certain vacuum degree at a spray head through the injection feeder 30 by utilizing the pressure of factory wind, so that upstream light materials are sucked into the conveying pipeline and are conveyed to the target bin 40 after being mixed by a certain mixing section, and conveying gas is filtered by the tail gas treatment bag filter 50 and then is emptied.
The device layout is limited because the principle of spraying determines that the pressure value of the delivery of such a delivery is low (the delivery pressure is generally not more than 0.4kg), so that the delivery distance cannot be far, usually not more than 80 meters.
Disclosure of Invention
The invention aims to provide a positive pressure conveying method for light powder and granular materials, which solves the problems that light materials are not easy to discharge and the like and realizes long-distance positive pressure conveying of the light materials.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a positive pressure conveying method for light powder materials is characterized in that materials stored in a source bin are conveyed into a sending tank through a feeding pipeline, and the sending tank conveys the materials to a target bin through a conveying pipeline and a pulling method pipe by conveying gas; during the process, a pressurizing air pipeline and an air pipeline are led out from a conveying pipeline in front of the laval pipe, and the other end of the pressurizing air pipeline is connected to the sending tank to pressurize the sending tank; an air suction nozzle is arranged in the air delivery pipeline, an air suction pipeline is connected to the sending tank from the air suction nozzle, and the sending tank is sprayed and sucked to realize accelerated feeding; the positive pressure conveying of the light powder and granular materials is realized under the combined action of pressurizing the sending tank and sucking the sending tank to realize the acceleration feeding.
Preferably, the suction nozzle exhausts air to the destination bin through an exhaust line.
Preferably, the top of the source material bin is provided with a conveying pipeline and a corresponding bag filter at the top of the source material bin.
Preferably, the top of the target bin is provided with a conveying pipeline and a corresponding target bin top bag filter.
The design of the invention adopts the suction nozzle to suck air from the sending tank, and realizes the forced blanking of materials by combining the pressurization of the sending tank, so that the feeding speed of the sending tank can be greatly accelerated for light materials; the method is characterized in that:
1. the air consumption of the air suction nozzle is almost equal to the total air delivery amount, and no additional air receiving pipe is needed for air supply; the suction air volume is about 80% of the conveying air volume.
2. The feed rate becomes controllable, it is possible to increase the feed rate by more than 3 times and achieve 1/3 where the delivery tank feed time is less than the delivery time.
When the transport line providing the transport gas is larger in size than the suction nozzle exhaust line, a dedicated exhaust line may further be not provided.
Compared with the prior art, the invention has the advantages that:
in the prior art, a sending tank exhaust pipeline and a sending tank feeding pipeline are used for feeding materials into a sending tank by using the gravity principle, for light materials, feeding and conveying are slow, and feeding time exceeds conveying time (generally, the feeding time of the sending tank is less than 1/3 of the conveying time), so that a conveying device is always in a material waiting state, and the conveying capacity of a system is seriously influenced; moreover, the pressure value of the conveying mode is low due to the principle of spraying, so that the conveying distance cannot be far, and usually does not exceed 80 meters.
The invention realizes the accelerated blanking of the sending tank (the feeding time of the sending tank is less than 1/5 of the conveying time) by pressurizing the sending tank and spraying and absorbing air in the blanking process, so that the positive pressure conveying pressure of the sending tank can be higher, thereby realizing the conveying at longer distance, and the conveying distance can even reach kilometers.
The invention also can be simpler in structure, and saves a sending tank exhaust pipeline and a corresponding exhaust valve in the conventional sending tank process.
Drawings
Fig. 1 is a schematic structural view of a conventional powder and pellet conveying method.
Fig. 2 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 2, in the positive pressure conveying method for light powder and granular materials according to the present invention, a material stored in a source bin 1 is conveyed into a sending tank 3 through a feeding pipeline 2, and the sending tank 3 conveys the material to a destination bin 5 through a conveying pipeline L0, a control valve and a pulling method pipe 4 by conveying gas; meanwhile, a pressurized air pipeline L1, an air pipeline L2 and a corresponding control valve are led out from the conveying pipeline in front of the laval pipe 4, and the other end of the pressurized air pipeline L1 is connected to the sending tank 3 to pressurize the sending tank 3; a suction nozzle 6 is arranged in the gas pipeline L2, a suction pipeline L21 is connected to the sending tank 3 from the suction nozzle 6, and the sending tank 3 is sprayed and sucked to realize accelerated feeding; the positive pressure conveying of the light powder and granular materials is realized under the combined action of pressurizing the sending tank 3 and sucking the sending tank 3 to realize the accelerated feeding.
Preferably, the suction nozzle 6 discharges to the destination silo 5 through a discharge line L22 and a corresponding control valve.
Preferably, the top of the source silo 1 is provided with a conveying pipeline and a corresponding source silo top bag filter 7.
Preferably, the top of the target silo 4 is provided with a conveying pipeline-exhaust gas and a corresponding target silo top bag filter 8.
The material stored in the source silo 1, through the suction nozzle 6 (or in combination with a dedicated vent line L22) and the feed line 2 of the sending tank 3, can be rapidly added to the sending tank 3; after the sending tank 3 is pressurized, a constant amount of conveying gas is provided by the pulling method pipe 4, the materials are conveyed to the target bin 5, and the conveying gas is filtered by a bag filter 8 at the top of the target bin and then is emptied.
Claims (4)
1. A positive pressure conveying method for light powder and granular materials is characterized in that materials stored in a source storage bin are conveyed into a sending tank through a feeding pipeline, and the sending tank conveys the materials to a target storage bin through a conveying pipeline and a pulling method pipe by conveying gas; during the process, a pressurizing air pipeline and an air pipeline are led out from a conveying pipeline in front of the laval pipe, and the other end of the pressurizing air pipeline is connected to the sending tank to pressurize the sending tank; an air suction nozzle is arranged in the air delivery pipeline, an air suction pipeline is connected to the sending tank from the air suction nozzle, and the sending tank is sprayed and sucked to realize accelerated feeding; the positive pressure conveying of the light powder and granular materials is realized under the combined action of pressurizing the sending tank and sucking the sending tank to realize the acceleration feeding.
2. The method for positive pressure conveying of lightweight aggregates according to claim 1, wherein said suction nozzle is vented to said destination bin through a vent line.
3. The positive pressure conveying method of light powder material as claimed in claim 1, wherein a conveying pipeline and a corresponding bag filter are arranged at the top of the source bin.
4. The positive pressure conveying method of light weight powder and granular material as recited in claim 1, wherein the top of the destination bin is provided with a conveying pipeline and a corresponding destination bin top bag filter.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019224389838 | 2019-12-30 | ||
| CN201922438983 | 2019-12-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112320360A true CN112320360A (en) | 2021-02-05 |
| CN112320360B CN112320360B (en) | 2022-08-30 |
Family
ID=74302809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010010878.9A Active CN112320360B (en) | 2019-12-30 | 2020-01-06 | Positive pressure conveying method for light powder and granular material |
Country Status (1)
| Country | Link |
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| CN (1) | CN112320360B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208578A (en) * | 2023-11-08 | 2023-12-12 | 江苏瑞材装备有限公司 | Positive pressure conveying device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254861A (en) * | 2008-03-07 | 2008-09-03 | 王向明 | Fine coal dense phase conveying system of fusion reducing furnace |
| CN101391709A (en) * | 2008-11-05 | 2009-03-25 | 岫岩满族自治县顺达气力输送设备制造厂 | Long distance concentrated phase conveying system and method with auxiliary blowing apparatus |
| CN202625363U (en) * | 2012-06-05 | 2012-12-26 | 天津市阿斯米机械设备制造安装工程有限公司 | Purging system for dry ash conveying in power plant |
| CN203602038U (en) * | 2013-11-18 | 2014-05-21 | 新特能源股份有限公司 | Positive pressure boosting type silica powder pneumatic conveyor |
| CN204568839U (en) * | 2015-03-23 | 2015-08-19 | 新疆天业（集团）有限公司 | A kind of dust removal of calcium carbide furnace malleation concentrated phase embolism formula air-transport system |
| CN105621103A (en) * | 2014-12-01 | 2016-06-01 | 常州常衡德宇粉体集成系统有限公司 | Positive-pressure conveying system device |
-
2020
- 2020-01-06 CN CN202010010878.9A patent/CN112320360B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101254861A (en) * | 2008-03-07 | 2008-09-03 | 王向明 | Fine coal dense phase conveying system of fusion reducing furnace |
| CN101391709A (en) * | 2008-11-05 | 2009-03-25 | 岫岩满族自治县顺达气力输送设备制造厂 | Long distance concentrated phase conveying system and method with auxiliary blowing apparatus |
| CN202625363U (en) * | 2012-06-05 | 2012-12-26 | 天津市阿斯米机械设备制造安装工程有限公司 | Purging system for dry ash conveying in power plant |
| CN203602038U (en) * | 2013-11-18 | 2014-05-21 | 新特能源股份有限公司 | Positive pressure boosting type silica powder pneumatic conveyor |
| CN105621103A (en) * | 2014-12-01 | 2016-06-01 | 常州常衡德宇粉体集成系统有限公司 | Positive-pressure conveying system device |
| CN204568839U (en) * | 2015-03-23 | 2015-08-19 | 新疆天业（集团）有限公司 | A kind of dust removal of calcium carbide furnace malleation concentrated phase embolism formula air-transport system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117208578A (en) * | 2023-11-08 | 2023-12-12 | 江苏瑞材装备有限公司 | Positive pressure conveying device |
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| CN112320360B (en) | 2022-08-30 |
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