CN212143340U - Raw coal grate screen buffer device - Google Patents
Raw coal grate screen buffer device Download PDFInfo
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- CN212143340U CN212143340U CN202020367575.8U CN202020367575U CN212143340U CN 212143340 U CN212143340 U CN 212143340U CN 202020367575 U CN202020367575 U CN 202020367575U CN 212143340 U CN212143340 U CN 212143340U
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- portal frame
- screen
- buffer assembly
- chute
- raw coal
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Abstract
The utility model belongs to the technical field of the coal screening, concretely relates to raw coal grid section sieve buffer. The problem of frequent chute open welding caused by impact of coal or waste rocks on a chute behind a grate screen, particularly impact of the waste rocks with large sizes on the chute is solved. The method comprises the following steps: the buffer assembly comprises a first-stage buffer assembly and a second-stage buffer assembly; the first-level buffer assembly comprises a first portal frame and a rubber door curtain arranged on the body of the first portal frame; the secondary buffer component comprises a second portal frame and a plurality of chains which are uniformly distributed on the body of the second portal frame; the first portal frame and the second portal frame cross the grid screen, and the rubber door curtain and the chain are positioned between the left side plate and the right side plate of the grid screen. The utility model discloses simple structure, easy preparation, with low costs, easy and simple to handle, can effectual improvement work efficiency.
Description
Technical Field
The utility model belongs to the technical field of the coal screening, concretely relates to raw coal grid section sieve buffer.
Background
The screening work is mainly provided with a fixed screen and a vibrating screen, while the pre-screening of the large waste rock generally adopts a fixed bar screen, the size of a screen seam of the bar screen is related to the required process flow, the determination of the screening efficiency is mainly related to the screen surface inclination angle, the screen surface inclination angle is overlarge, the speed of the material moving on the screen surface is high, the production rate is high, but the impact force on a rear chute is large when the speed is high, particularly, the impact force on a lower chute is large when the waste rock with large size is large, the chute is frequently opened and welded, and the maintenance amount is greatly increased.
Because the concentration of the gas under the mine is high, the risk of welding the upper and lower openings of the coal bunker and the waste rock bunker is high, and the frequent welding of the chute is easy to cause gas explosion.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve coal or waste rock and strike the chute behind the grid screen, especially the great waste rock of size causes the frequent problem of chute open welding to the impact of chute.
Further provides a raw coal grate screen buffer device, which comprises a primary buffer component and a secondary buffer component; the first-stage buffer assembly comprises a first portal frame and a rubber door curtain arranged on the body of the first portal frame; the secondary buffer component comprises a second portal frame and a plurality of chains which are uniformly distributed on the body of the second portal frame; the first portal frame and the second portal frame cross the grid screen, and the rubber door curtain and the chain are positioned between the left side plate and the right side plate of the grid screen.
Further, the distance between the chains is 120mm, and the distance between the tail ends of the chains and the screen bars of the grate screen is 80 mm.
Further, the tail end of the rubber door curtain is 50mm away from the screen bars of the grate screen.
Be different from prior art, the utility model discloses at least, include following beneficial effect:
1. a raw coal grid bar sieve buffer, install twice door curtain buffer on the grid bar sieve, according to the coal quality condition, select the use, when guaranteeing the handling capacity, reduce the bold and strike the rear, reduce the maintenance volume.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic structural view of a raw coal grate screen buffering device of the present invention.
In the figure: 1. rubber door curtain, 2, first portal frame, 3, second portal frame, 4, chain, 5, group's board, 6, grid screen.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
A raw coal grate screen buffer device comprises a primary buffer component and a secondary buffer component; the first-level buffer assembly comprises a first portal frame 2 and a rubber door curtain 1 arranged on the body of the first portal frame; the secondary buffer component comprises a second portal frame 3 and a plurality of chains 4 which are uniformly distributed on the body of the second portal frame; the first portal frame 2 and the second portal frame 3 cross over a grid screen 6, and the rubber door curtain 1 and the chain 4 are positioned between a left side plate 5 and a right side plate 5 of the grid screen 6. The distance between the chains 4 is 120mm, and the distance between the tail ends of the chains 4 and the screen bars of the grate 6 is 80 mm. The tail end of the rubber door curtain 1 is 50mm away from the screen bars of the grate 6.
Specifically, when the gangue in the raw coal is less, only the rubber door curtain 1 needs to be used, and the chain 4 is hung on the second portal frame 2. The carbon block has small impact on the chute below, and simultaneously, the carbon block collides with the chute to reduce the granularity, and the undersize materials are conveyed into the coal bunker through the belt below.
When there are more waste rocks in the raw coal, the two buffer assemblies are used simultaneously, so that the impact abrasion of the waste rocks to the chute below is effectively reduced, and the service life of the chute is prolonged.
While the embodiments of the invention have been disclosed above, it is not limited to the applications listed in the description and the embodiments, which are fully applicable in all kinds of fields of application suitable for this invention, and further modifications may be readily made by those skilled in the art, and the invention is therefore not limited to the specific details shown and described herein without departing from the general concept defined by the claims and their equivalents.
Claims (3)
1. A raw coal grate screen buffer device is characterized by comprising: the buffer assembly comprises a first-stage buffer assembly and a second-stage buffer assembly;
the primary buffer assembly comprises a first portal frame (2) and a rubber door curtain (1) arranged on the body of the first portal frame;
the secondary buffer component comprises a second portal frame (3) and a plurality of chains (4) which are uniformly distributed on the body of the second portal frame;
the first portal frame (2) and the second portal frame (3) cross the grate screen (6), and the rubber door curtain (1) and the chain (4) are positioned between a left side plate (5) and a right side plate (5) of the grate screen (6).
2. A raw coal grate screen cushioning device according to claim 1, characterized in that the distance between the chains (4) is 120mm, and the distance between the tail end of the chains (4) and the grate bars of the grate screen (6) is 80 mm.
3. The raw coal grate screen cushioning device of claim 1, characterized in that the tail end of the rubber sheet door curtain (1) is 50mm away from the screen bars of the grate screen (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020367575.8U CN212143340U (en) | 2020-03-23 | 2020-03-23 | Raw coal grate screen buffer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020367575.8U CN212143340U (en) | 2020-03-23 | 2020-03-23 | Raw coal grate screen buffer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212143340U true CN212143340U (en) | 2020-12-15 |
Family
ID=73716045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020367575.8U Active CN212143340U (en) | 2020-03-23 | 2020-03-23 | Raw coal grate screen buffer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212143340U (en) |
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2020
- 2020-03-23 CN CN202020367575.8U patent/CN212143340U/en active Active
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