CN206456979U - Pebble coal positive pressure pneumatic conveying device - Google Patents
Pebble coal positive pressure pneumatic conveying device Download PDFInfo
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- CN206456979U CN206456979U CN201720011871.2U CN201720011871U CN206456979U CN 206456979 U CN206456979 U CN 206456979U CN 201720011871 U CN201720011871 U CN 201720011871U CN 206456979 U CN206456979 U CN 206456979U
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- Prior art keywords
- ball
- valve
- discharge nozzle
- type storehouse
- air inlet
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Abstract
The utility model discloses a kind of pebble coal positive pressure pneumatic conveying device, ball-type storehouse pump is connected to by control valve including source of the gas pipeline, the discharging opening of ball-type storehouse pump is connected to discharge nozzle, the discharging opening of ball-type storehouse pump is connected to discharge nozzle, discharging shut-off valve is installed on discharge nozzle, boosting compensation device is installed on the anterior discharge nozzle of discharging shut-off valve, four-way connection is set on source of the gas main line, wherein the first interface of four-way connection is by installing the air inlet that the first air flue of the first stop valve and the first check valve is connected on the upside of the pump of ball-type storehouse, second interface is by installing the air inlet that the second air flue of the second stop valve is connected on the downside of the pump of ball-type storehouse, 3rd interface is connected to the air inlet of boosting compensation device by installing the 3rd air flue of the 3rd stop valve and the second check valve.The utility model is rational in infrastructure, it is stable, save strength, be not easily blocked, dust pollution is small, noise is small, can reduce the rate of depreciation of pipe network elbow, strengthens conveying capacity.
Description
Technical field
The equipment that the utility model belongs to thermal power plant's pebble coal conveying, particularly a kind of pebble coal positive pressure pneumatic conveying dress
Put.
Background technology
Medium-speed pulverizer is widely applied due to small investment, good economy performance in thermal power plant.Medium-speed pulverizer was being run
Cheng Zhonghui produces pebble coal.Pebble coal is mainly derived from larger raw coal Midst density, the spoil of difficult mill, pyrite etc., and it is in coal-grinding
From the stone coal discharge mouthful discharge of its underpart when machine is run.Pebble coal needs timely discharge, if stone coal discharge is not in time,
Bulk deposition in coal pulverizer, easily causes scraper plate, carbon sealing wear or comes off, the pebble coal of accumulation can also block air channel,
Caught fire in the presence of hot blast, the coal pulverizer part such as scaling loss air channel, scraper plate and stone coal bin causes coal pulverizer failure to stop transport.
Common stone coal discharge has the forms such as manual emission, hydraulic discharge, mechanical transportation.At present, due to power plant
Coal is changeable, and raw coal ature of coal is generally deteriorated, and the debris such as stone, spoil, ore increases than before in raw coal, and stone coal discharge amount is big
Big increase, has a strong impact on the safe operation of thermal power plant, and conventional stone coal discharge mode is all difficult to solve pebble coal automation discharge
Demand.A small number of power plant domestic in the recent period employ air-transport system to pebble coal processing.It is that medium is conveyed with the air-flow of motion
Material, is the industrial transportation resources used already, referred to as Geldart-D particle.The advantage of air-transport system is：Equipment construction letter
Single, transfer efficiency is high, labour health condition is good.The conveyance conduit of Geldart-D particle, is easy to set pipe network with suiting measures to local conditions, arrangement letter
Just flexibly, floor space can be made full use of, it is easy to adapt to workshop condition.
The characteristics of traditional Geldart-D particle has following：
Conveyance conduit can be arranged neatly, make shop equipment Process configuration reasonable.However, compared with other transporting patterns,
It has the disadvantage that strength consumption is slightly larger, because conveying air velocity is higher, is also easy to produce the broken of pipe wear and transported material material.Certainly,
Above-mentioned weak point can be significantly improved in the case of using low conveying air velocity, the conveying of high mixing ratio, in addition, transported material
The particle size of material is also subject to certain restrictions, typically, when particle size is more than 30mm, caking property, bibulous material its
Conveying is more difficult.
There are many problems in current practice, be mainly shown as in the air-transport system that pebble coal is conveyed：1st, easily
There is no dredging measure after generation line clogging phenomenon, blocking；2nd, still there is dust leakage at scene, and the system failure is more；3rd, system noise
Sound is very big, as the noise source that power plant is maximum, is unfavorable for environmental protection；4th, system conveying capacity is not high；5th, existing air-transport system
Generally it is difficult to convey for big particle diameter pebble coal as pebble coal feed tool using screw(-type) feeder；6th, screw(-type) feeder is made
For tumbler, it is very easy to break down when conveying pebble coal, also easily abrasion.
Utility model content
The purpose of this utility model is to provide a kind of pebble coal positive pressure pneumatic conveying device, and its is rational in infrastructure, and operation is steady
It is fixed, save strength, be not easily blocked, dust pollution is small, noise is small, can reduce the rate of depreciation of pipe network elbow, enhancing conveying energy
Power.
What the purpose of this utility model was realized in：A kind of pebble coal positive pressure pneumatic conveying device, including source of the gas pipeline
Ball-type storehouse pump is connected to by control valve, the discharging opening of ball-type storehouse pump is connected to discharge nozzle, and the discharging opening of ball-type storehouse pump is connected to
Discharge nozzle, is installed with discharging shut-off valve on discharge nozzle, and supercharging compensation is installed with the anterior discharge nozzle of discharging shut-off valve
Device, sets four-way connection on source of the gas main line, wherein the first interface of four-way connection by install the first stop valve and
First air flue of the first check valve is connected to the air inlet on the upside of the pump of ball-type storehouse, and second interface is by installing the of the second stop valve
Two air flues are connected to the air inlet on the downside of the pump of ball-type storehouse, and the 3rd interface is by installing the 3rd of the 3rd stop valve and the second check valve
Air flue is connected to the air inlet of boosting compensation device.
Principle of the present utility model is that the negative pressure produced using malleation produces suction to the material of conveying, works as barotropic gas
Enter boosting compensation device when, gas enters discharge nozzle by multiple air inlet pipe of boosting compensation device.At this moment supercharging compensation dress
Front end is put for normal pressure, rear end is negative-pressure sucking.The utility model exactly make use of this principle, need to only be provided to ball-type storehouse pump
0.2-0.3MPa pressure gas sources can just convey pebble coal particulate matter.Strength is not only saved in this design, and to pipe network elbow
Rate of depreciation also reduce.
Main contents：
Include multiple passages being connected with coal pulverizer, passage is connected by ball-type storehouse pump and respective tap line
Connect, each tap line is passed through stone coal bunker by main line pipeline, pebble coal bin bottom is provided with device for discharging, stone coal charge
The air outlet on storehouse top passes through deduster filtering emission；All set at tap line and main line line connection and riser culverts
Put boosting compensation device, the utility model have it is stable, be not easily blocked, dust pollution is small, noise is small, conveying capacity is strong etc.
Feature.
The utility model is rational in infrastructure, it is stable, save strength, be not easily blocked, dust pollution is small, noise is small, reduction
The rate of depreciation of pipe network elbow, enhances conveying capacity.
Brief description of the drawings
The utility model is further described below in conjunction with accompanying drawing, Fig. 1 illustrates for the utility model front view structure
Figure.
Embodiment
A kind of pebble coal positive pressure pneumatic conveying device, as shown in figure 1, being connected to ball-type by control valve including source of the gas pipeline
Storehouse pump 1, the discharging opening of ball-type storehouse pump 1 is connected to discharge nozzle 2, and the discharging opening of ball-type storehouse pump 1 is connected to discharge nozzle 2, in discharge nozzle 2
On discharging shut-off valve 3 is installed, boosting compensation device 4 is installed on the anterior discharge nozzle 2 of discharging shut-off valve 3, in source of the gas
Four-way connection is set on main line 5, and wherein the first interface of four-way connection is by installing the first stop valve 7 and the first check valve
8 the first air flue 6 is connected to the air inlet of the upside of ball-type storehouse pump 1, the second air flue that second interface passes through the second stop valve 9 of installation
10 are connected to the air inlet of the downside of ball-type storehouse pump 1, and the 3rd interface is by installing the of the 3rd stop valve 12 and the second check valve 13
Three air flues 11 are connected to the air inlet of boosting compensation device 4.The import set in the elbow of discharge nozzle 2 along elbow tangential direction
On be connected to boosting tracheae 14.
Claims (2)
1. a kind of pebble coal positive pressure pneumatic conveying device, including source of the gas pipeline are connected to ball-type storehouse pump (1), ball-type by control valve
The discharging opening of storehouse pump (1) is connected to discharge nozzle (2), it is characterized in that：The discharging opening of ball-type storehouse pump (1) is connected to discharge nozzle (2),
Discharging shut-off valve (3) is installed, being installed with supercharging on the anterior discharge nozzle (2) of discharging shut-off valve (3) mends on discharge nozzle (2)
Device (4) is repaid, four-way connection is set on source of the gas main line (5), and wherein the first interface of four-way connection is by installing first
The first air flue (6) of stop valve (7) and the first check valve (8) is connected to the air inlet on the upside of ball-type storehouse pump (1), and second interface is led to
Cross and the second air flue (10) of the second stop valve (9) is installed is connected to air inlet on the downside of ball-type storehouse pump (1), the 3rd interface passes through peace
The 3rd air flue (11) for filling the 3rd stop valve (12) and the second check valve (13) is connected to the air inlet of boosting compensation device (4).
2. pebble coal positive pressure pneumatic conveying device according to claim 1, it is characterized in that：Elbow in discharge nozzle (2)
Boosting tracheae (14) is connected in the import set along elbow tangential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011871.2U CN206456979U (en) | 2017-01-05 | 2017-01-05 | Pebble coal positive pressure pneumatic conveying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720011871.2U CN206456979U (en) | 2017-01-05 | 2017-01-05 | Pebble coal positive pressure pneumatic conveying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206456979U true CN206456979U (en) | 2017-09-01 |
Family
ID=59695478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720011871.2U Expired - Fee Related CN206456979U (en) | 2017-01-05 | 2017-01-05 | Pebble coal positive pressure pneumatic conveying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206456979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002039A (en) * | 2017-11-27 | 2018-05-08 | 攀钢集团钒钛资源股份有限公司 | A kind of feeding valve |
-
2017
- 2017-01-05 CN CN201720011871.2U patent/CN206456979U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108002039A (en) * | 2017-11-27 | 2018-05-08 | 攀钢集团钒钛资源股份有限公司 | A kind of feeding valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 Termination date: 20200105 |