CN211687144U - Scraper type coal feeding device - Google Patents

Scraper type coal feeding device Download PDF

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Publication number
CN211687144U
CN211687144U CN202020134440.7U CN202020134440U CN211687144U CN 211687144 U CN211687144 U CN 211687144U CN 202020134440 U CN202020134440 U CN 202020134440U CN 211687144 U CN211687144 U CN 211687144U
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China
Prior art keywords
coal
bunker
scraper
feeding
feeder
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Active
Application number
CN202020134440.7U
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Chinese (zh)
Inventor
李小宇
冯涛
李永平
张建
张泳涛
邱根宝
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China Petroleum and Chemical Corp
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China Petroleum and Chemical Corp
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Priority to CN202020134440.7U priority Critical patent/CN211687144U/en
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Abstract

The utility model discloses a scraper type coal feeding device, which comprises a lower coal bunker, an upper coal bunker arranged at the top of the lower coal bunker, and a coal feeding bunker arranged at the bottom of the lower coal bunker, wherein a scraper is arranged in the coal feeding bunker and is provided with an endless annular belt; the lower bunker having a lower bunker front wall and a lower bunker rear wall, the lower bunker front wall and the lower bunker rear wall being disposed at an interval along a moving direction of the upper portion of the endless belt, and the lower bunker rear wall being located on a downstream side of the moving direction of the upper portion of the endless belt with respect to the lower bunker front wall; this lower coal bunker rear wall leads the coal board and connects on this and leads the lower coal board of leading the lower extreme of coal board including one, should lead the inboard direction slope of coal bunker from top to bottom down on this, should lead the outside direction slope of coal bunker from top to bottom down on the coal board down. By utilizing the method, the phenomena of coal blockage, coal breakage, coal hanging on the wall of the silo and the like can be avoided, and the smooth proceeding of coal discharging is ensured.

Description

Scraper type coal feeding device
Technical Field
The utility model relates to a scraper coal feeding device.
Background
Coal is applied to various industries, and among various coal feeding modes, coal is fed into an upper funnel-shaped coal bunker and stored in the coal bunker, and feeding is carried out by a lower chain, so that the coal feeding structure is widely adopted at present. The coal bunker is mainly conical or square conical in shape, the upper opening is used for feeding materials, the lower opening is used for discharging materials, the materials fall to the bottom scraper plate through gravity from top to bottom, and then the materials are conveyed into the production device through the scraper coal feeder. The coal feeding method has the advantages of simple structure and simple operation, and the coal feeding amount can be adjusted by adjusting the rotating speed of the scraper; the disadvantages are easy to cause coal blockage, increase of workload, unstable production or serious influence on safety and economy due to interruption.
In the operation process, the coal bunker often has the situations of coal blockage, coal breakage and coal hanging on the bunker wall, and after the coal bunker is subjected to coal blockage and coal hanging, the coal bunker cannot be completely dredged even if the mode of knocking the bunker wall by external force is adopted, and the feeding line needs to be stopped and the hole is opened for cleaning in serious cases, so that a large amount of manpower and material resources are wasted, the field environment is polluted, and the safe operation of related equipment is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a scraper type coal feeding device, which comprises a lower coal bunker, an upper coal bunker arranged at the top of the lower coal bunker, and a coal feeding bunker arranged at the bottom of the lower coal bunker, wherein the inner cavities of the upper coal bunker, the lower coal bunker and the coal feeding bunker are communicated, a scraper is arranged in the coal feeding bunker, and the scraper is provided with an endless annular belt;
the lower bunker having a lower bunker front wall and a lower bunker rear wall, the lower bunker front wall and the lower bunker rear wall being disposed at an interval along a moving direction of the upper portion of the endless belt, and the lower bunker rear wall being located on a downstream side of the moving direction of the upper portion of the endless belt with respect to the lower bunker front wall;
this lower coal bunker rear wall leads the coal board and connects on this and leads the lower coal board of leading the lower extreme of coal board including one, should lead the inboard direction slope of coal bunker from top to bottom down on this, should lead the outside direction slope of coal bunker from top to bottom down on the coal board down.
Preferably, the included angle between the upper coal guide plate and the horizontal plane is 70-80 degrees, and the included angle between the lower coal guide plate and the horizontal plane is 25-30 degrees.
After the rear wall of the lower coal bunker is formed by splicing the upper coal guide plate and the lower coal guide plate, the flow direction of coal in the lower coal bunker can be changed, and the piling angle formed by the coal and the rear wall of the lower coal bunker is avoided, so that the flow resistance of the coal at the rear wall of the lower coal bunker is reduced, and the phenomenon that the coal is bonded on the rear wall of the lower coal bunker is relieved. Especially, after the lower coal guide plate is arranged, a wedge-shaped cavity is formed between the lower coal guide plate and the upper side part of the annular belt, coal can be quickly separated from an original falling position under the driving of the annular belt after falling onto the annular belt from the lower coal bunker, and enters the wedge-shaped cavity, and due to the existence of the wedge-shaped cavity, the phenomenon that the coal is adhered to the rear wall of the lower coal bunker due to the extrusion of the coal to the rear wall of the lower coal bunker under the driving of the annular belt is avoided, so that the adhesion amount of the coal on the rear wall of the lower coal bunker is reduced. Even if little coal adheres to the lower coal guide plate, the coal adhered to the lower coal guide plate falls onto the endless belt under gravity, vibration, and subsequent scraping of the coal. Therefore, the phenomena of coal blockage, coal breakage, coal hanging on the bin wall and the like can be avoided, and the smooth coal discharging is ensured.
Further, in order to reduce the amount of adhesion of the coal particles to the upper bunker, the upper bunker has an upper bunker front wall and an upper bunker rear wall which are disposed at intervals in the moving direction of the upper side portion of the endless belt, and the upper bunker rear wall is located on the downstream side of the moving direction of the upper side portion of the endless belt with respect to the upper bunker front wall;
the front wall of the upper coal bunker extends along the vertical direction or inclines towards the inner side direction of the upper coal bunker from top to bottom, and when the front wall of the upper coal bunker inclines towards the inner side direction of the upper coal bunker from top to bottom, the included angle between the front wall of the upper coal bunker and the horizontal direction is larger than 70 degrees;
the back wall of the upper coal bunker extends along the vertical direction or inclines towards the inner side direction of the coal bunker from top to bottom to top, and when the back wall of the upper coal bunker inclines towards the inner side direction of the coal bunker from top to bottom to top, the included angle between the back wall of the upper coal bunker and the horizontal direction is larger than 70 degrees.
Under the limitation of the angle, the front wall and the rear wall of the coal feeding bin can reduce the adhesion of coal particles on the coal feeding bin to the maximum extent while ensuring the storage capacity of the coal feeding bin, and ensure the smooth falling of coal in the coal feeding bin.
Preferably, the upper coal guide plate is formed by extending the rear wall of the upper coal bunker downwards along an inclined direction, and the included angles between the upper coal guide plate and the rear wall of the upper coal bunker and the horizontal plane are the same. The design can ensure that when coal falls along the rear wall of the upper coal bunker and the upper coal guide plate, the coal cannot vibrate due to different gradients of the rear wall of the upper coal bunker and the upper coal guide plate, and the fluidity of the coal cannot be damaged.
In order to avoid the blockage caused by the large-particle coal blocks entering the coal feeding bin, a grid is arranged between the upper coal bin and the lower coal bin. Preferably, the grid is formed by a plurality of straight bars parallel to each other.
Further, for adjusting the coal conveying quantity, the lower coal guide plate is connected to the top of the coal feeding bin, a coal quantity adjusting baffle is arranged at the joint of the lower coal guide plate and the coal feeding bin, the coal quantity adjusting baffle extends vertically, the coal quantity adjusting baffle can move vertically along the vertical direction and can stretch into the coal feeding bin, and the coal quantity adjusting baffle is located above the upper side portion of the annular belt. When moving the coal quantity adjusting baffle along the vertical direction, the distance between the coal quantity adjusting baffle and the upper side part of the annular belt can be adjusted, so that the coal carrying quantity on the annular belt is adjusted, and the coal conveying quantity is adjusted.
Preferably, in order to further reduce the adhesion amount of the coal particles, the upper coal bunker and the lower coal bunker are both made of stainless steel materials.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
Detailed Description
Referring to fig. 1 and 2, a scraper type coal feeder includes a lower coal bunker 200, an upper coal bunker 100 disposed at the top of the lower coal bunker 200, and a coal feeder 300 disposed at the bottom of the lower coal bunker 200, wherein the upper coal bunker 100, the lower coal bunker 200, and the inner cavity of the coal feeder 300 are communicated, and a scraper 400 is installed in the coal feeder 300, and the scraper 400 has an endless belt 10. The lower coal bunker 200 is directly connected to the top of the coal supply bunker 300. The top of the coal feeding bin 100 is provided with a feeding port 17.
The scraper 400 further includes a driving wheel 410 and a driven wheel 420, the endless belt 10 is mounted on the driving wheel 410 and the driven wheel 420, the endless belt 10 is rotated by the driving wheel 410, and the endless belt is rotated in a clockwise direction in the paper direction shown in fig. 1, for convenience of description, in this application, the portions of the endless belt 10 between the driving wheel 410 and the driven wheel 420 are referred to as an upper portion 110 and a lower portion 120, respectively, in fig. 1, the direction of a first arrow 450 indicates the moving direction of the upper portion 110, and the direction of a second arrow 460 indicates the moving direction of the lower portion 120. A discharge port 310 is provided at the lower side of the coal feed bin 300. A pallet 16 is mounted to the underside of the upper portion 110 of the endless belt 10 for supporting the upper portion 110 of the endless belt 10. In this embodiment, the endless belt 10 is a chain scraper.
The lower bunker 200 is formed by four second side plates, which are respectively referred to as a lower bunker front wall 3, a lower bunker left wall 13, a lower bunker rear wall, and a lower bunker right wall 14 in sequence. The lower silo front wall and the lower silo rear wall are arranged at a distance in the direction of movement of the upper section 11 of the endless belt and are located downstream in the direction of movement of the upper section of the endless belt with respect to the lower silo front wall 3. Viewing ports 18 are mounted on both the lower bunker left wall 13 and the lower bunker right wall 14.
This lower coal bunker rear wall includes that one leads coal board 6 and connects and lead coal board 7 down at the lower extreme of coal board 6 on this, should lead coal board 6 from top to bottom down the inboard direction slope of coal bunker on this, should lead coal board 7 down the outside direction slope of coal bunker from top to bottom down.
In this embodiment, an angle α between the upper coal guide plate and the horizontal plane is 75 °, and an angle β between the lower coal guide plate and the horizontal plane is 25 °. It is understood that in other embodiments, the included angle α may also be 70 ° or 80 °, and the included angle β may also be 30 °.
The upper bunker 100 is formed by four first side plates, which are referred to as the upper bunker front wall 1, the upper bunker left wall 11, the upper bunker rear wall 2, and the upper bunker right wall 12, respectively, in sequence. The upper bunker front wall and the upper bunker rear wall are arranged at an interval in the direction of movement of the upper portion of the endless belt, and the upper bunker rear wall is located on the downstream side of the upper portion of the endless belt with respect to the upper bunker front wall 1 in the direction of movement.
The front wall 1 of the upper coal bunker is inclined from top to bottom towards the inner side of the upper coal bunker, and the included angle gamma between the front wall 1 of the upper coal bunker and the horizontal direction is 75 degrees; it will be appreciated that in other embodiments the angle y may also be 70 or 80 or the upper silo front wall 1 extends in a vertical direction.
The upper coal bunker rear wall 2 is inclined from top to bottom towards the inner side of the upper coal bunker, and when the upper coal bunker rear wall is inclined from top to bottom towards the inner side of the upper coal bunker, the included angle theta between the upper coal bunker rear wall 2 and the horizontal direction is 75 degrees; it will be appreciated that in other embodiments the angle theta may also be 70 deg. or 80 deg., or the upper coal silo back wall 2 may extend in a vertical direction.
In this embodiment, the upper coal guide plate is formed by extending the rear wall of the upper coal bunker downward along the inclined direction, so that the included angles between the upper coal guide plate and the rear wall of the upper coal bunker and the horizontal plane are the same, that is, the included angle α and the included angle θ are the same.
In order to avoid the blockage caused by the large coal blocks entering the coal feeding bin, a grid 9 is arranged between the upper coal bin and the lower coal bin in the embodiment. In the present embodiment, the grid 9 is formed by a plurality of parallel straight bars.
A coal quantity adjusting baffle 8 is arranged at the joint of the lower coal guide plate 7 and the coal feeding bin 300, the coal quantity adjusting baffle 8 extends vertically, the coal quantity adjusting baffle can move up and down along the vertical direction and can extend into the coal feeding bin, and the coal quantity adjusting baffle is positioned above the upper side part 110 of the annular belt. The coal amount adjusting baffle 8 is adjusted in the vertical direction, and the distance between the coal amount adjusting baffle 8 and the upper side part of the endless belt can be adjusted to adjust the coal conveying amount of the endless belt.
In this embodiment, the four first side plates and the four second side plates are made of stainless steel.
In this embodiment, the included angles between the left wall of the upper coal bunker and the right wall of the upper coal bunker and the horizontal plane are both 85 degrees.

Claims (8)

1. A scraper type coal feeding device is characterized by comprising a lower coal bunker, an upper coal bunker arranged at the top of the lower coal bunker, and a coal feeding bunker arranged at the bottom of the lower coal bunker, wherein the upper coal bunker, the lower coal bunker and the inner cavity of the coal feeding bunker are communicated, a scraper is arranged in the coal feeding bunker, and the scraper is provided with an endless annular belt;
the lower bunker having a lower bunker front wall and a lower bunker rear wall, the lower bunker front wall and the lower bunker rear wall being disposed at an interval along a moving direction of the upper portion of the endless belt, and the lower bunker rear wall being located on a downstream side of the moving direction of the upper portion of the endless belt with respect to the lower bunker front wall;
this lower coal bunker rear wall leads the coal board and connects on this and leads the lower coal board of leading the lower extreme of coal board including one, should lead the inboard direction slope of coal bunker from top to bottom down on this, should lead the outside direction slope of coal bunker from top to bottom down on the coal board down.
2. The scraper coal feeder according to claim 1,
the included angle between the upper coal guide plate and the horizontal plane is 70-80 degrees, and the included angle between the lower coal guide plate and the horizontal plane is 25-30 degrees.
3. The scraper coal feeder according to claim 1,
the upper bunker has an upper bunker front wall and an upper bunker rear wall, the upper bunker front wall and the upper bunker rear wall are arranged at intervals along the moving direction of the upper side part of the annular belt, and relative to the upper bunker front wall, the upper bunker rear wall is positioned at the downstream side of the moving direction of the upper side part of the annular belt;
the front wall of the upper coal bunker extends along the vertical direction or inclines towards the inner side direction of the upper coal bunker from top to bottom, and when the front wall of the upper coal bunker inclines towards the inner side direction of the upper coal bunker from top to bottom, the included angle between the front wall of the upper coal bunker and the horizontal direction is larger than 70 degrees;
the back wall of the upper coal bunker extends along the vertical direction or inclines towards the inner side direction of the coal bunker from top to bottom to top, and when the back wall of the upper coal bunker inclines towards the inner side direction of the coal bunker from top to bottom to top, the included angle between the back wall of the upper coal bunker and the horizontal direction is larger than 70 degrees.
4. The scraper coal feeder according to claim 3,
the upper coal guide plate is formed by downward extension of the rear wall of the upper coal bunker along the inclined direction, and the included angles between the upper coal guide plate and the rear wall of the upper coal bunker and the horizontal plane are the same.
5. The scraped-surface coal feeder of claim 1, wherein a grate is provided between the upper and lower coal bins.
6. The scraper coal feeder according to claim 5,
the grid is composed of a plurality of straight rods which are parallel to each other.
7. The scraper coal feeder according to claim 1,
this lead the coal scute down and connect at the top for the coal bunker, lead the coal scute down and be provided with a coal volume adjusting baffle with the junction of giving the coal bunker, this coal volume adjusting baffle is along vertical extension, and this coal volume adjusting baffle can follow vertical direction and reciprocate and can stretch into in the coal bunker, this coal volume adjusting baffle is located the top of the upside part of girdle.
8. The scraper coal feeder of claim 1, wherein the upper coal bunker and the lower coal bunker are made of stainless steel material.
CN202020134440.7U 2020-01-19 2020-01-19 Scraper type coal feeding device Active CN211687144U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202020134440.7U CN211687144U (en) 2020-01-19 2020-01-19 Scraper type coal feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202020134440.7U CN211687144U (en) 2020-01-19 2020-01-19 Scraper type coal feeding device

Publications (1)

Publication Number Publication Date
CN211687144U true CN211687144U (en) 2020-10-16

Family

ID=72773970

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202020134440.7U Active CN211687144U (en) 2020-01-19 2020-01-19 Scraper type coal feeding device

Country Status (1)

Country Link
CN (1) CN211687144U (en)

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