CN104692125A - Air supply device and method for pneumatic conveying pipeline - Google Patents
Air supply device and method for pneumatic conveying pipeline Download PDFInfo
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- CN104692125A CN104692125A CN201510054444.8A CN201510054444A CN104692125A CN 104692125 A CN104692125 A CN 104692125A CN 201510054444 A CN201510054444 A CN 201510054444A CN 104692125 A CN104692125 A CN 104692125A
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- conveying pipeline
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Abstract
The invention discloses an air supply device and method for a pneumatic conveying pipeline. The air supply device comprises a feeding pipe, a feeding pipe joint, a receiving chamber, a reducing pipe, a discharging pipe, a discharging pipe joint, a nozzle and a sealing flange, wherein the receiving chamber is a circular pipe section with the same cross-sectional area; the reducing pipe is a conical pipe reduced in the cross-sectional area; the feeding pipe is vertically mounted on the side of the receiving chamber; the reducing pipe is connected with the discharging pipe; the nozzle is arranged on an end cover mouth of the receiving chamber; the nozzle and the receiving chamber are arranged on the same axis; high-pressure supplementary air is accelerated by the nozzle and then rapidly brings powder materials into the reducing pipe; the speed of two-phase flow is increased and the pressure is reduced in the flowing process, a negative pressure is formed in the air supply device for the pneumatic conveying pipeline, so that powder can enter the air supply device for the pneumatic conveying pipeline more smoothly when the supplementary air is added. The air supply device is arranged at a bent position, and has the advantages of being simple in structure, convenient to operate and good in durability.
Description
Technical field
The present invention relates to the Pneumatic conveying pipeline making-up air device in a kind of powder thick and thin phase burner technique and method.
Background technology
Pneumatic Conveying Technology is widely used in fields such as the energy, chemical industry, medicine, mining and food processings.Within the quite a long time, be mainly applied as master with dilute phase pneumatic conveying.In diluted phase transport, solid-gas ratio is low, delivery speed is high, when material is carried by high-speed gas, between particle and material with producing violent collision and friction between tube wall, Particle Breakage is serious, and pipe wear is serious, and the conveying needed is large-minded, and energy consumption is larger.Compared to traditional low pressure diluted phase transport technology, thick and thin phase burner has the advantages such as pipe wear is light, energy consumption is little, transport efficiency, thus at home and abroad develops rapidly.Because in dense phase powder Geldart-D particle, solid-gas ratio is high, speed is lower, and nowed forming is complicated, and the conveying technology of dense phase powder air-transport system wants the more general delivery system of condition for peace to want high.In thick and thin phase burner, for effectively regulating Cemented filling solid-gas ratio, preventing powder material blocking in thick and thin phase burner process pipeline, guaranteeing to carry stability, usually need to introduce and supplement wind.Therefore, air compensation device becomes requisite key device in thick and thin phase burner technology.
At present, air compensation device mainly contains two profiles formula: the first, its structure is the form of internal and external casing, base pipe is used for conveying powdery material, outer endless tube is for supplementing wind air compartment, the supplementary wind of high pressure enters pipeline from the circumferential weld gap delivery duct, and forms certain density Dual-Phrase Distribution of Gas olid after powder material mixing; The second air compensation device is the improvement that the supplementary wind in order to avoid adding carries out the first air compensation device conveying generation excessive resistance.More typically have: in the outside of delivery pipe around there being gas distribution pipe, gas distribution pipe is communicated with air supply pipe, gas distribution pipe is provided with several jet thrusts, the outer wall of jet thrust and the tube wall of conveying pipeline are tightly connected, its air nozzle is placed in described conveying pipeline, and the air flow line of giving vent to anger of jet thrust is partial to the conveying air flow line in described conveying pipeline and is less than 90 ° with the angle of the line of centers of delivery duct.
No matter supplement wind vertically enter delivery duct or tilt to enter delivery duct, the line of centers supplementing general mood flow path direction and described delivery duct all certainly exists certain angle of attack, supplementary wind and powder material are mutually oppressed and the resistance of transfer line not only can be made to increase, and the fluidised form of mixed flow also can be caused unstable.Because aforementioned two kinds of tonifying Qi modes can have certain inhibition to the flowing of powder material, inevitably cause powder material operational throughput to reduce, powder is also insufficient with mixing of gas simultaneously.And now there are some researches show, supplement wind air quantity larger, powder material operational throughput is less.
Summary of the invention
technical matters:increase to overcome the delivery duct resistance caused owing to adding supplementary wind in process of pneumatic transmission, affect the shortcomings such as powder material operational throughput reduces and powder and gas and vapor permeation effect be undesirable, the invention provides a kind of powder material that realizes and keep in the duct compared with high solid-gas ratio, the Pneumatic conveying pipeline making-up air device carried continually and steadily and method.
technical scheme:pneumatic conveying pipeline making-up air device of the present invention, comprises feed pipe joint, feed pipe, receiving chamber, reducing pipe, discharge nozzle, discharge nozzle joint, nozzle, sealing flange.Nozzle, receiving chamber, reducing pipe, discharge nozzle and discharge nozzle joint install connection successively, and feed pipe is vertically mounted on the side of receiving chamber, and sealing flange is arranged on receiving chamber end, and nozzle is arranged on sealing flange.
In the preferred version of apparatus of the present invention, receiving chamber is the pipe that sectional area is constant, described reducing pipe be sectional area along powder conveying direction conical tube from large to small.
In the preferred version of apparatus of the present invention, the center shaft of nozzle, receiving chamber, reducing pipe, discharge nozzle and discharge nozzle joint is arranged on the same axis
In the preferred version of apparatus of the present invention, nozzle is arranged on sealing flange circle centre position.
Pneumatic conveying pipeline supplementing method for air, at powder pneumatic delivery pipe turn in the road, above-mentioned Pneumatic conveying pipeline making-up air device is set, powder material enters receiving chamber from feed pipe, supplementing wind from the high pressure of nozzle injection brings in described sectional area cylindrical-conical reducing pipe from large to small by the powder material entering receiving chamber, improve the flowing velocity of powder, make powder enter discharge nozzle smoothly, then be delivered to hypomere pipeline by discharge nozzle joint.
Above-mentioned making-up air device is installed in technical solution of the present invention corner that is large in the loss of Pneumatic conveying pipeline upward pressure, easily appearance blocking road, carries out tonifying Qi, the effect realize overcoming transporting resistance, regulating solid-gas ratio.The supplementary wind of high pressure, after convergent nozzle, enters receiving chamber with certain speed, brings powder material into reducing pipe fast.Supplementary wind and powder material start mixing in reducing pipe, carry out the exchange of momentum and energy, in flow process, the speed of fluid-mixing raises, pressure drop, negative pressure is formed in making-up air device, continuous attraction powder material enters reducing pipe, enables powder enter making-up air device smoothly, is delivered to follow-up Pneumatic conveying pipeline.
beneficial effect:compared with existing air compensation device, tool of the present invention has the following advantages:
Existing air compensation device adopts the form of internal and external casing, interior pipe convey materials, and outer tube is logical supplements wind, supplements wind vertical or tilt to enter delivery duct and carry out tonifying Qi from interior pipe seam gap.The present invention in terms of existing technologies, adopt the center shaft arrangement on the same axis of nozzle, reducing pipe and discharge nozzle, enter delivery duct or inclination enter compared with the tonifying Qi mode of delivery duct with supplementary wind is vertical, there is not the angle of attack in the line of centers supplementing general mood flow path direction and described delivery duct, supplementary wind and powder material can not cause the resistance of transfer line to increase because mutually oppressing, the problem that after successfully solving existing air compensation device solid and gas mixed effect difference and tonifying Qi, mass transport amount reduces; Simultaneously, the present invention introduces injection principle first, negative pressure is formed in making-up air device, powder is helped to enter making-up air device smoothly, very high solid-gas ratio can be provided to ensure again enough mass transport amounts, avoid in prior art the membership that adds supplementing wind and hinder powder flowing, cause the defect of the fluidised form instability of mixed flow; Making-up air device of the present invention, by changing the pressure of supplementary wind, regulates the delivery speed of material, obtains different mass transport amounts; Making-up air device of the present invention is arranged on pipeline corner, effectively can solve the blockage problem of corner, guarantee the stability of powder conveying.
Accompanying drawing explanation
Fig. 1 is the top discharge sending cans powder delivery system schematic diagram with Pneumatic conveying pipeline making-up air device of the present invention.
Fig. 2 is the bottom discharge formula sending cans powder delivery system schematic diagram with Pneumatic conveying pipeline making-up air device of the present invention.
Fig. 3 is the structural representation of Pneumatic conveying pipeline making-up air device of the present invention.
Have in figure: feed pipe 1, feed pipe joint 2, receiving chamber 3, reducing pipe 4, discharge nozzle 5, discharge nozzle joint 6, nozzle 7, sealing flange 8, sending cans 9, receiving tank 10, Pneumatic conveying pipeline making-up air device 11.
Detailed description of the invention
Below in conjunction with the present invention will be further explained the explanation of Figure of description and embodiment.
Current powder pressing dense phase pneumatic conveying system can be divided into top discharge sending cans powder delivery system and bottom discharge formula sending cans powder delivery system according to the discharge method of sending cans.Fig. 1 is the top discharge sending cans powder delivery system schematic diagram with Pneumatic conveying pipeline making-up air device of the present invention.Fluidized wind carries out fluidisation by entering in tank bottom sending cans 9 to powder, and powder upward movement enters delivery duct.Fig. 2 is the bottom discharge formula sending cans powder delivery system schematic diagram with this Pneumatic conveying pipeline making-up air device.Fluidized wind adds bottom sending cans 9, and the powder be fluidized is provided with the character of fluid, bottom sending cans 9, enter delivery duct.In two kinds of delivery systems, owing to adding Pneumatic conveying pipeline making-up air device 11, powder material is brought into reducing pipe 4 and is mixed by supplementary wind fast, and the speed of fluid-mixing raises in reducing pipe 4, pressure drop, form negative pressure in Pneumatic conveying pipeline making-up air device, constantly attract powder material to enter reducing pipe 4, enable powder enter Pneumatic conveying pipeline making-up air device smoothly.Receiving tank 10 is delivered to by stable smoothly for powder.
The structural representation of Pneumatic conveying pipeline making-up air device of the present invention as shown in Figure 3, is made up of feed pipe 1, feed pipe joint 2, receiving chamber 3, reducing pipe 4, discharge nozzle 5, discharge nozzle joint 6, nozzle 7, sealing flange 8.Wherein nozzle 7, receiving chamber 3, reducing pipe 4, discharge nozzle 5, discharge nozzle joint 6 install connection successively, feed pipe 1 is vertically mounted on the side of receiving chamber 3, be an angle of 90 degrees with the axis of discharge nozzle 5, also can according to the angle of turning round of pipeline when practical application, the angle of corresponding change feed pipe 1 and discharge nozzle 5; Sealing flange 8 is arranged on receiving chamber 3 end, is bolted, and is placed with pad and ensures its leak tightness between sealing flange 8 and receiving chamber 3 end; The center shaft of nozzle 7, receiving chamber 3, reducing pipe 4, discharge nozzle 5 and discharge nozzle joint 6 is arranged on the same axis; Receiving chamber 3 is the pipe that sectional area is constant, and reducing pipe 4 is sectional area conical tubes from large to small, the converging angles of reducing pipe 4, general 8 to 10 degree; Nozzle 7 is welded on the circle centre position of flange through sealing flange 8, can be checked and nozzle clearing by dismounting sealing flange 8.
Described Pneumatic conveying pipeline making-up air device is arranged on the corner of Pneumatic conveying pipeline, and feed pipe is identical with delivery duct bore with the bore of discharge nozzle, and the feed pipe of making-up air device is connected with delivery duct respectively by threaded connection with discharge nozzle.The powder material be fluidized flows into described Pneumatic conveying pipeline making-up air device by feed pipe, is inhaled into reducing pipe from the receiving chamber of making-up air device, fully mixes, be finally delivered in pipeline in discharge nozzle with supplementary wind.Supplement and have adjusted conveying solid-gas ratio in transfer line and delivery speed adding of wind.In described Pneumatic conveying pipeline making-up air device, jet expansion is positioned at immediately below inlet point, is so both of value to formation negative pressure, is convenient to again mixing and energy exchange of powder material and supplementary wind.Reducing pipe is designed to one section of sectional area conical tube from large to small, improves the injection capacity to the material in receiving chamber.Take into account converging angles simultaneously and cross the situation that conference weakens traffic capacity and the too little easy appearance turbulent flow of shrinkage degree, choosing of converging angles is moderate.Described Pneumatic conveying pipeline making-up air device material is 304 corrosion-resistant steels, thus has certain wear resistance, can prevent from boring a hole because of wearing and tearing, add service life, and material easily obtain, and is convenient to processing.
The above is only the preferred embodiment of the present invention; should be understood that; although this specification sheets reference accompanying drawing is to invention has been detailed description; but the shape of Pneumatic conveying pipeline making-up air device of the present invention can change along with actual conditions; for those skilled in the art; under the premise without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a Pneumatic conveying pipeline making-up air device, is characterized in that: this device is made up of feed pipe (1), feed pipe joint (2), receiving chamber (3), reducing pipe (4), discharge nozzle (5), discharge nozzle joint (6), nozzle (7) and sealing flange (8); Described nozzle (7), receiving chamber (3), reducing pipe (4), discharge nozzle (5), discharge nozzle joint (6) install connection successively, described feed pipe (1) is vertically mounted on the side of receiving chamber (3), described sealing flange (8) is arranged on receiving chamber (3) end, and described nozzle (7) is arranged on sealing flange (8).
2. a kind of Pneumatic conveying pipeline making-up air device according to claim 1, is characterized in that: described receiving chamber (3) is the pipe that sectional area is constant, described reducing pipe (4) be sectional area along powder conveying direction conical tube from large to small.
3. a kind of Geldart-D particle making-up air device according to claim 1 and 2, is characterized in that: the center shaft of described nozzle (7), receiving chamber (3), reducing pipe (4), discharge nozzle (5) and discharge nozzle joint (6) is arranged on the same axis.
4. a kind of Geldart-D particle making-up air device according to claim 1 and 2, is characterized in that: described nozzle (7) is arranged on sealing flange (8) circle centre position.
5. a Pneumatic conveying pipeline supplementing method for air, it is characterized in that: the method arranges the Pneumatic conveying pipeline making-up air device described in claim 1,2,3 or 4 at powder pneumatic delivery pipe turn in the road, powder material enters receiving chamber (3) from feed pipe (1), the high pressure penetrated from nozzle (7) supplements wind and brings in described sectional area cylindrical-conical reducing pipe (4) from large to small by the powder material entering receiving chamber (3), improve the flowing velocity of powder, make powder enter discharge nozzle (5) smoothly, then be delivered to hypomere pipeline by discharge nozzle joint (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510054444.8A CN104692125A (en) | 2015-02-02 | 2015-02-02 | Air supply device and method for pneumatic conveying pipeline |
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| CN201510054444.8A CN104692125A (en) | 2015-02-02 | 2015-02-02 | Air supply device and method for pneumatic conveying pipeline |
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| CN104692125A true CN104692125A (en) | 2015-06-10 |
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| CN201510054444.8A Pending CN104692125A (en) | 2015-02-02 | 2015-02-02 | Air supply device and method for pneumatic conveying pipeline |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214441A (en) * | 2015-10-30 | 2016-01-06 | 上海核工程研究设计院 | A kind of Geldart-D particle injector of Wind Volume III type iodine adsorber |
| CN107388040A (en) * | 2017-09-04 | 2017-11-24 | 中煤（天津）洗选科技有限公司 | The pulp conveying device on preparation equipment |
| CN107555233A (en) * | 2017-09-20 | 2018-01-09 | 苏州江天包装彩印有限公司 | The slitter edge collection system of printed matter |
| CN108423359A (en) * | 2018-05-15 | 2018-08-21 | 陕西宝化科技有限责任公司 | A kind of on-line automatic material-clearing device |
| CN108467004A (en) * | 2018-05-24 | 2018-08-31 | 王永 | A kind of semi-automatic feeding machine |
| CN109823843A (en) * | 2019-03-18 | 2019-05-31 | 杭州回水科技股份有限公司 | Pneumatic conveying pipeline check intake valve |
| CN112249714A (en) * | 2020-10-19 | 2021-01-22 | 江苏恒博气力输送设备制造有限公司 | Low-energy-consumption material flow blowing assisting device |
| CN113620063A (en) * | 2021-07-16 | 2021-11-09 | 秦皇岛秦热发电有限责任公司 | Wear-resistant elbow for pneumatically conveying powder materials and using method thereof |
| CN114766695A (en) * | 2022-04-26 | 2022-07-22 | 浙江王庭斋食品有限公司 | Production system and production method of coarse cereal palm seeds |
-
2015
- 2015-02-02 CN CN201510054444.8A patent/CN104692125A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105214441A (en) * | 2015-10-30 | 2016-01-06 | 上海核工程研究设计院 | A kind of Geldart-D particle injector of Wind Volume III type iodine adsorber |
| CN107388040A (en) * | 2017-09-04 | 2017-11-24 | 中煤（天津）洗选科技有限公司 | The pulp conveying device on preparation equipment |
| CN107388040B (en) * | 2017-09-04 | 2023-09-26 | 中煤（天津）洗选科技有限公司 | Ore pulp conveying device for mineral separation equipment |
| CN107555233B (en) * | 2017-09-20 | 2022-11-08 | 苏州江天包装科技股份有限公司 | Waste edge collecting system for printed products |
| CN107555233A (en) * | 2017-09-20 | 2018-01-09 | 苏州江天包装彩印有限公司 | The slitter edge collection system of printed matter |
| CN108423359A (en) * | 2018-05-15 | 2018-08-21 | 陕西宝化科技有限责任公司 | A kind of on-line automatic material-clearing device |
| CN108467004A (en) * | 2018-05-24 | 2018-08-31 | 王永 | A kind of semi-automatic feeding machine |
| CN109823843A (en) * | 2019-03-18 | 2019-05-31 | 杭州回水科技股份有限公司 | Pneumatic conveying pipeline check intake valve |
| CN109823843B (en) * | 2019-03-18 | 2024-04-05 | 杭州回水科技股份有限公司 | Check air inlet valve for pneumatic conveying pipeline |
| CN112249714A (en) * | 2020-10-19 | 2021-01-22 | 江苏恒博气力输送设备制造有限公司 | Low-energy-consumption material flow blowing assisting device |
| CN113620063A (en) * | 2021-07-16 | 2021-11-09 | 秦皇岛秦热发电有限责任公司 | Wear-resistant elbow for pneumatically conveying powder materials and using method thereof |
| CN114766695A (en) * | 2022-04-26 | 2022-07-22 | 浙江王庭斋食品有限公司 | Production system and production method of coarse cereal palm seeds |
| CN114766695B (en) * | 2022-04-26 | 2023-01-10 | 浙江王庭斋食品有限公司 | Production system and production method of coarse cereal palm |
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| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Xiaoping Inventor after: Hu Jiawei Inventor after: Liang Cai Inventor after: Liu Daoyin Inventor after: Ma Jiliang Inventor after: Wu Shoucheng Inventor before: Chen Xiaoping Inventor before: Hu Jiawei Inventor before: Liang Cai Inventor before: Liu Daoyin Inventor before: Ma Jiliang |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: CHEN XIAOPING HU JIAWEI LIANG CAI LIU DAOYIN MA JILIANG TO: CHEN XIAOPING HU JIAWEI LIANG CAI LIU DAOYIN MA JILIANG WU SHOUCHENG |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150610 |
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| RJ01 | Rejection of invention patent application after publication |