CN206064576U - Pulverized coal grinding machine air pressure automatic sieving unit - Google Patents
Pulverized coal grinding machine air pressure automatic sieving unit Download PDFInfo
- Publication number
- CN206064576U CN206064576U CN201620905845.XU CN201620905845U CN206064576U CN 206064576 U CN206064576 U CN 206064576U CN 201620905845 U CN201620905845 U CN 201620905845U CN 206064576 U CN206064576 U CN 206064576U
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- China
- Prior art keywords
- coal
- screening device
- tank body
- fines screening
- base plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of pulverized coal grinding machine air pressure automatic sieving unit, is arranged on the coal dust one-level outlet tube outlet on pulverized coal grinding machine top, including coal fines screening device, coal dust input pipe, coal dust outlet tube, coal grain recurrent canal；Coal fines screening device upper end outlet is connected with coal dust outlet tube, and lower end is provided with coal dust input pipe；The base plate of coal fines screening device tank body is inclined to coal fines screening device tank body with coal grain recurrent canal junction；Coal grain recurrent canal is inclined to the incline direction of coal fines screening device tank body base plate, and its upper end is connected to coal fines screening device tank wall lowest point；Further improvement is that：The angle of inclination of coal grain recurrent canal is consistent with the angle of inclination of coal fines screening device tank body base plate, and the minimum side bus of its endoporus are less than coal fines screening device tank body base plate upper surface；Adjust pad is provided between the flange of flange assembly.Coal grain in coal fines screening device can be sent into the secondary grinding of grinder by this utility model, it is ensured that coal dust conveying is unimpeded, meanwhile, raw material has been saved, cost has been reduced.
Description
Technical field
This utility model is related to coal dust manufacture field, in particular relates to a kind of coal fines screening device.
Background technology
Small and Medium Enterprises in China is produced and concentrated supply of heating in the city boiler is based on coal-burning boiler at present, below 75t/h's
The social recoverable amount about 570,000 of the hot-water boiler of steam boiler and less than 58 megawatts, wherein chain-grate boiler accounts for 70% or so,
To improve efficiency of combustion, existing chain-grate boiler is typically equipped with pulverized coal grinding machine, coal is worn into after coal dust, by coal dust input pipe
To be input into after breeze atomizing in chain-grate boiler burner hearth, after this mode can significantly improve efficiency of combustion, but the grinding of pulverized coal grinding machine
Also coal grain is produced, part coal grain is input in coal fines screening device together with coal dust, but as coal grain is heavier, major part falls in pulverized coal sieve
Divide the bottom of device, due to fault of construction, Jing coal grain often occurs and blocks coal fines screening device lower end the coal fines screening device of prior art
Coal dust input port, affects the conveying of coal dust.
The content of the invention
This utility model is directed to the deficiencies in the prior art, proposes that coal grain in coal fines screening device can be removed by one kind in time, protects
Card coal dust conveys unimpeded pulverized coal grinding machine air pressure automatic sieving unit.
This utility model is achieved through the following technical solutions technical goal.
Pulverized coal grinding machine air pressure automatic sieving unit, the coal dust one-level outlet tube for being arranged on pulverized coal grinding machine top export it
On, including coal fines screening device, coal dust input pipe, coal dust outlet tube, coal grain recurrent canal；The coal fines screening device includes tank body and tank
Lid, the upper end of tank body and the lower end of cover are respectively equipped with the annular boss for stretching out, and annular boss is respectively equipped with several companies
The bolt hole of cans picking body and cover, tank body and cover are by bolt, nut connection fastening；The coal fines screening device upper end outlet and coal
Powder outlet tube is connected, and lower end is provided with coal dust input pipe；The coal dust input pipe exports Gutron with the coal dust one-level on grinder top
Cross flange assembly connection；The base plate of the coal fines screening device tank body is inclined to coal fines screening device tank body with coal grain recurrent canal junction
Tiltedly；Which thes improvement is that：The coal grain recurrent canal is inclined to the incline direction of coal fines screening device tank body base plate, and its upper end connects
In coal fines screening device tank wall lowest point.
In said structure, the angle of inclination of the coal grain recurrent canal and the angle of inclination one of coal fines screening device tank body base plate
Cause, coal grain returns the minimum side bus of pipe orifice and is less than coal fines screening device tank body base plate upper surface.
In said structure, between the flange of the flange assembly, adjust pad is provided with；The adjust pad partial occlusion method
The through hole of blue component.
This utility model compared with prior art, has the positive effect that：
1. the upper end of coal grain recurrent canal is connected to coal fines screening device tank wall lowest point, and coal grain recurrent canal is to pulverized coal sieve
The incline direction of device tank body base plate is divided to incline, into the most of coal grain in coal fines screening device along the inclined base plate of coal fines screening device
Jing coal grain recurrent canals carry out secondary grinding into grinder, will not block the coal dust input port of coal fines screening device lower end, it is ensured that coal
Powder conveying is unimpeded.
2. the angle of inclination of coal grain recurrent canal is consistent with the angle of inclination of coal fines screening device tank body base plate, coal grain recurrent canal
The minimum side bus of endoporus are less than coal fines screening device tank body base plate upper surface, so, basic into the coal grain in coal fines screening device
On all secondary grinding is carried out into grinder along the inclined base plate Jing coals grain recurrent canal of coal fines screening device.
3. adjust pad is provided between the flange of flange assembly, the through hole of adjust pad partial occlusion flange assembly, this
Sample, can pass through to adjust the size of coal dust input pipe cross-sectional flow area, be adjusted into the coal dust discharge pressure of screening plant.
4. coal fines screening is carried out into sifter using the gas pressure in grinder, saved the energy, reduced into
This.
Description of the drawings
Fig. 1 is this utility model structural representation.
Fig. 2 is I enlarged schematic partial view in Fig. 1.
Fig. 3 is the A-A sectional views in Fig. 2.
Specific embodiment
Below according to accompanying drawing and in conjunction with the embodiments the utility model is described in further detail.
The air pressure automatic sieving unit of pulverized coal grinding machine shown in accompanying drawing, the coal dust one-level for being arranged on 1 top of pulverized coal grinding machine are defeated
On the outlet of outlet pipe 1.1, including coal fines screening device 2, coal dust input pipe 3, coal dust outlet tube 6, coal grain recurrent canal 5；Coal fines screening
Device 2 includes that tank body 2.1 and cover 2.2, the upper end of tank body 2.1 and the lower end of cover 2.2 are respectively equipped with the convex annular for stretching out
Platform, annular boss are respectively equipped with the bolt hole of several connection tank bodies 2.1 and cover 2.2, and tank body 2.1 and cover 2.2 are by bolt
2.3rd, the connection of nut 2.4 fastening；2 upper end outlet of coal fines screening device is connected with coal dust outlet tube 6, and lower end is provided with coal dust input pipe 3；
Coal dust input pipe 3 is connected by flange assembly 4 with the coal dust one-level outlet tube 1.1 on 1 top of grinder；2 tank body of coal fines screening device
2.1 base plate is inclined to 2 tank body 2.1 of coal fines screening device with 5 junction of coal grain recurrent canal；Coal grain recurrent canal 5 is to coal fines screening device 2
The incline direction of 2.1 base plate of tank body is inclined, and its upper end is connected to 2 tank body of coal fines screening device, 2.1 outer wall lowest point, the present embodiment
In, the angle of inclination of coal grain recurrent canal 5 is consistent with the angle of inclination of 2 tank body of coal fines screening device, 2.1 base plate, in coal grain recurrent canal 5
The minimum side bus in hole are less than 2 tank body of coal fines screening device, 2.1 base plate upper surface.
Adjust pad 7 is provided between the flange of flange assembly 4；The through hole of 7 partial occlusion flange assembly 4 of adjust pad.
Claims (3)
1. a kind of pulverized coal grinding machine air pressure automatic sieving unit, is arranged on pulverized coal grinding machine（1）The coal dust one-level outlet tube on top
（1.1）On outlet, including coal fines screening device（2）, coal dust input pipe（3）, coal dust outlet tube（6）, coal grain recurrent canal（5）；Institute
State coal fines screening device（2）Including tank body（2.1）And cover（2.2）, tank body（2.1）Upper end and cover（2.2）Lower end difference
The annular boss for stretching out is provided with, annular boss is respectively equipped with several connection tank bodies（2.1）And cover（2.2）Bolt
Hole, tank body（2.1）And cover（2.2）By bolt（2.3）, nut（2.4）Connection fastening；The coal fines screening device（2）On bring out
Mouth and coal dust outlet tube（6）Connection, lower end is provided with coal dust input pipe（3）；The coal dust input pipe（3）With grinder（1）Top
Coal dust one-level outlet tube（1.1）By flange assembly（4）Connection；The coal fines screening device（2）Tank body（2.1）Base plate to coal
Powder sifter（2）Tank body（2.1）With coal grain recurrent canal（5）Junction inclines；It is characterized in that：The coal grain recurrent canal（5）To
Coal fines screening device（2）Tank body（2.1）The incline direction of base plate is inclined, and its upper end is connected to coal fines screening device（2）Tank body（2.1）Outward
Wall lowest point.
2. the pulverized coal grinding machine air pressure automatic sieving unit according to claims 1, it is characterised in that：The coal grain is returned
Pipe（5）Angle of inclination and coal fines screening device（2）Tank body（2.1）The angle of inclination of base plate is consistent, coal grain recurrent canal（5）Endoporus is most
Low side bus are less than coal fines screening device（2）Tank body（2.1）Base plate upper surface.
3. the pulverized coal grinding machine air pressure automatic sieving unit according to claims 1 or 2, it is characterised in that：The flange
Component（4）Flange between be provided with adjust pad（7）；The adjust pad（7）Partial occlusion flange assembly（4）Through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620905845.XU CN206064576U (en) | 2016-08-20 | 2016-08-20 | Pulverized coal grinding machine air pressure automatic sieving unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620905845.XU CN206064576U (en) | 2016-08-20 | 2016-08-20 | Pulverized coal grinding machine air pressure automatic sieving unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206064576U true CN206064576U (en) | 2017-04-05 |
Family
ID=58430685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620905845.XU Expired - Fee Related CN206064576U (en) | 2016-08-20 | 2016-08-20 | Pulverized coal grinding machine air pressure automatic sieving unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206064576U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140435A (en) * | 2016-08-20 | 2016-11-23 | 泰州市启航石油分析仪器有限公司 | Pulverized coal grinding machine air pressure automatic sieving unit |
-
2016
- 2016-08-20 CN CN201620905845.XU patent/CN206064576U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140435A (en) * | 2016-08-20 | 2016-11-23 | 泰州市启航石油分析仪器有限公司 | Pulverized coal grinding machine air pressure automatic sieving unit |
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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 |
Granted publication date: 20170405 Termination date: 20170820 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |