Anti-blocking scraper coal feeder

Abstract

The utility model belongs to the technical field of coal mining machinery, and particularly relates to an anti-blocking scraper coal feeder which comprises a box body, chain wheels and a circular ring chain, the chain wheels comprise a machine head chain wheel and a machine tail chain wheel, the machine head chain wheel and the machine tail chain wheel are rotatably installed on the box body, and the machine head chain wheel and the machine tail chain wheel are in transmission connection through the circular ring chain. The device is characterized in that a first scraper blade and a second scraper blade are arranged in a staggered mode in the length direction of the circular ring chain, a plurality of coulters are evenly distributed on the side edge of the first scraper blade in the width direction of the first scraper blade, and the bottom of the box body cannot be blocked.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal mining machinery, and particularly relates to an anti-blocking scraper coal feeder. Background Technique

[0002] The statements in this part only provide the background technique related to the present disclosure, and do not necessarily constitute the prior art.

[0003] The scraper coal feeder is a coal conveyor, mainly composed of front and rear sprockets and a conveyor chain hanging on the two sprockets. The coal feeder utilizes the coal under the action of its own frictional force and the dragging force of the scraper chain to form a continuous coal seam flow in the box along the movement direction of the scraper chain, and continuously flows from the coal inlet to the coal outlet to achieve the continuous, uniform and quantitative conveying task;

[0004] The scraper coal feeder equipment is equipped with its own scraper. During the use process, when the boiler coal combustion is mixed with part of the coal slime, the coal slime will make the coal seam flow more viscous, and it is easy to accumulate at the bottom of the scraper box body of the coal feeder, resulting in the narrowing of the passage of the scraper box body, increasing the resistance of the coal seam to the scraper, causing the scraper to deform, and the coal to accumulate inside the scraper conveyor for a long time, which may lead to the fracture of the scraper conveyor chain and the damage of the reducer;

[0005] For the anti-blocking measures of the existing scraper coal feeder, reference can be made to a buried scraper coal feeder with anti-blocking and chain-breaking prevention disclosed in the publication number CN203494620U. By setting an air outlet pipe at the tail of the conveying mechanism, the large lump raw coal enters the coal mill through the air outlet pipe of the coal mill outlet for re-grinding, and the fine powder raw coal is sucked away through the air outlet pipe of the coal mill outlet, effectively solving the problem of coal accumulation at the tail of the coal feeder;

[0006] The coal conveyed by the above-mentioned scraper coal feeder is relatively dry coal selected by the mining factory, while the materials mined from the underground in the coal mine are a mixture of sludge, gangue and coal slime. The mixture has a certain viscosity, and the powders of sludge, gangue and coal slime are adhered together. The above air pipe cannot suck it away, and the coal slime will still accumulate at the bottom of the scraper box body. Therefore, there is an urgent need for a scraper coal feeder that can prevent the blockage of viscous coal slime. Summary of the Utility Model

[0007] In order to solve the above problems, the utility model provides an anti-blocking scraper coal feeder, and the utility model solves the technical problems of deviation and derailment.

[0008] According to some embodiments, the utility model adopts the following technical solutions:

[0009] The embodiment of the present application discloses an anti-blocking scraper coal feeder, comprising a casing, a sprocket and a circular chain, wherein the sprocket comprises a head sprocket and a tail sprocket, the head sprocket and the tail sprocket are rotatably mounted on the casing, the head sprocket and the tail sprocket are connected via a circular chain transmission, and is characterized in that a first scraper and a second scraper are alternately arranged along the length direction of the circular chain, and a plurality of plow blades are evenly distributed on the side of the first scraper and along the width direction of the first scraper.

[0010] It is further configured that the cross section of the plow is triangular and the plow faces the direction of travel of the circular chain.

[0011] It is further configured that the first scraper is a rectangular flat plate, an M-shaped welding groove is provided on one side of the first scraper, and the first scraper is fixed to the circular chain through the M-shaped welding groove.

[0012] It is further configured that the second scraper is a rectangular flat plate, an M-shaped welding groove is provided on one side of the second scraper, and the second scraper is fixed to the circular chain through the M-shaped welding groove.

[0013] It is further configured that a plurality of plowshares are arranged in parallel, and a spacing is set between the plowshares.

[0014] It is further configured that the ring chain is composed of a plurality of rings penetrating each other, and the central axes of the rings are perpendicular to each other.

[0015] It is further configured that the ring can deflect relative to the side wall of the box body.

[0016] It is further configured that the plow blade is fixedly mounted on the second scraper side wall.

[0017] It is further configured that a feed port is provided on the upper side wall of the box body corresponding to the head sprocket, and the feed port is an inverted cone.

[0018] It is further configured that a discharge port is arranged on the lower side wall of the box body corresponding to the tail sprocket, and the discharge port is an inverted cone.

[0019] The beneficial effects of the utility model are as follows:

[0020] The utility model transforms the scraper, and a plurality of plowshares are evenly and vertically distributed on the side of the scraper. When coal accumulates at the bottom of the box during normal operation, the scraper with the plowshares tilts, and the chain corresponding to the scraper is slightly deformed. The sharp part of the scraper cuts the deposited coal under the drive of the chain. The accumulated coal can be loosened while the circular chain rotates, thereby ensuring that the bottom of the box will not be blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The attached drawings forming a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model.

[0022] Figure 1 It is a schematic structural diagram of the present utility model.

[0023] Figure 2 is Figure 1 an enlarged view of the structure at A in

[0024] Figure 3 It is the front view of the scraper of the present utility model.

[0025] Figure 4 It is the side view of the scraper of the present utility model.

[0026] Figure 5 It is the top view of the scraper of the present utility model.

[0027] Explanation of reference numerals:

[0028] 1 Box body; 2 Sprocket; 21 Head sprocket; 22 Tail sprocket;

[0029] 3 Ring chain; 31 Ring;

[0030] 4 First scraper; 41 Plowshare; 42 M-shaped welding groove;

[0031] 5 Second scraper

[0032] 6 Feed inlet; 7 Discharge outlet. Specific implementation mode

[0033] The present utility model will be further described below in conjunction with the attached drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are all illustrative and are intended to provide a further description of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0035] Embodiment 1

[0036] This structure is a left-right symmetric structure. As Figure 1 shown in the schematic diagram of the unilateral structure, a non-blocking scraper coal feeder, referring to Figure 1, including a box body 1, a sprocket 2 and a circular chain 3, the sprocket 2 includes a head sprocket 21 and a tail sprocket 22, the head sprocket 21 and the tail sprocket 22 are rotatably installed on the box body 1, the head sprocket 21 and the tail sprocket 22 are transmission connected by the circular chain 3, and a first scraper 4 and a second scraper 5 are staggered along the length direction of the circular chain 3, and a plurality of plow blades 41 are evenly distributed on the side of the first scraper 4 and along the width direction of the first scraper 4.

[0037] Reference Figure 3 , Figure 4 and Figure 5 The cross section of the plow 41 is triangular, and the plow 41 faces the traveling direction of the circular chain 3, ensuring that the tip of the plow 41 first contacts the accumulated coal, thereby crushing the coal.

[0038] The first scraper 4 is a rectangular flat plate, and an M-shaped welding groove 42 is provided on one side of the first scraper 4. The first scraper 4 is fixed to the circular chain 3 through the M-shaped welding groove 42. The second scraper 5 is a rectangular flat plate, and an M-shaped welding groove 42 is provided on one side of the second scraper 5. The second scraper 5 is fixed to the circular chain 3 through the M-shaped welding groove 42. The M-shaped welding groove 42 is adapted to the circular ring 31 constituting the circular chain 3, and the bottom of the M-shaped welding groove 42 contacts the side wall of the circular ring 31 and is welded to the circular ring 31.

[0039] The plowshare 41 is fixedly mounted on the side wall of the first scraper 4. The plowshare 41 is welded and fixed to the side wall of the first scraper 4. After welding, the plowshares 41 are parallel to each other. In order to ensure the segmentation of the accumulated coal, a plurality of plowshares 41 are arranged in parallel. A spacing is set between the plowshares 41. The tip of the plowshare 41 contacts the accumulated coal, and then the accumulated coal is broken under the thrust of the circular chain 3, and the accumulated coal is pushed out after being loosened.

[0040] Reference Figure 2 The circular chain 3 is composed of a plurality of circular rings 31 that penetrate each other. The central axes of the circular rings 31 are perpendicular to each other. The circular rings 31 can deflect relative to the side wall of the box body 1. Since the circular rings 31 are movably connected, the two circular rings 31 that penetrate each other can rotate. When coal accumulates at the bottom of the box body 1, the scraper supports the accumulated coal. At this time, under the reaction force of the accumulated coal, the scraper tilts. At this time, the circular chain 3 is tightened, and the tightened chain still rotates under the drive of the sprocket 2. Then the first scraper 4 cuts the coal through the plow 41.

[0041] A feed port 6 is provided on the upper side wall of the box body 1 corresponding to the head sprocket 21 . The feed port 6 is in an inverted cone shape. The coal enters the box body 1 through the inverted cone-shaped feed port 6 and then flows under the action of the first scraper 4 and the second scraper 5 .

[0042] A discharge port 7 is provided on the lower side wall of the box body 1 corresponding to the tail sprocket 22. The discharge port 7 is in an inverted conical shape. Under the action of the first scraper 4 and the second scraper 5, the flowing coal is pushed to the inverted conical discharge port 7 and then flows out of the box body 1.

[0043] The working principle of the present utility model is as follows:

[0044] When coal accumulates at the bottom of the box body 1, the scraper presses against the accumulated coal. At this time, under the reaction force of the accumulated coal, the scraper tilts. At this time, the ring chain 3 is tightened, and the tightened chain still rotates under the drive of the sprocket 2. Subsequently, the first scraper 4 cuts the coal material through the plow blade 41, making the accumulated coal loose and able to be pushed by the second scraper 5 behind, ensuring that the bottom of the box body 1 will not be blocked.

[0045] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

[0046] Although the specific implementation manners of the present utility model are described above in conjunction with the drawings, it is not a limitation to the protection scope of the present utility model. Those skilled in the art should understand that based on the technical solution of the present utility model, various modifications or deformations that can be made by those skilled in the art without creative labor are still within the protection scope of the present utility model.

Claims

1. An anti-blocking scraper coal feeder, comprising a box, a sprocket and a ring chain, wherein the sprocket comprises a head sprocket and a tail sprocket, the head sprocket and the tail sprocket are rotatably mounted on the box, and the head sprocket and the tail sprocket are connected by a ring chain transmission, characterized in that: The first scraper and the second scraper are staggered along the length direction of the circular chain, and a plurality of plowshares are evenly distributed on the side of the first scraper and along the width direction of the first scraper.

2. The anti-blocking scraper coal feeder according to claim 1, characterized in that: The cross section of the plow is triangular, and the plow faces the traveling direction of the circular chain.

3. The anti-blocking scraper coal feeder according to claim 1, characterized in that: The first scraper is a rectangular flat plate, an M-shaped welding groove is provided on one side of the first scraper, and the first scraper is fixed on the circular chain through the M-shaped welding groove.

4. The anti-blocking scraper coal feeder according to claim 1, characterized in that: The second scraper is a rectangular flat plate, an M-shaped welding groove is provided on one side of the second scraper, and the second scraper is fixed on the circular chain through the M-shaped welding groove.

5. The anti-blocking scraper coal feeder according to claim 1, characterized in that: A plurality of plowshares are arranged in parallel, and intervals are set between the plowshares.

6. The anti-blocking scraper coal feeder according to claim 1, characterized in that: The ring chain is composed of a plurality of rings that penetrate each other, and the central axes of the rings are perpendicular to each other.

7. The anti-blocking scraper coal feeder according to claim 6, characterized in that: The ring can be deflected relative to the side wall of the box.

8. The anti-blocking scraper coal feeder according to claim 1, characterized in that: The plow blade is fixedly mounted on the side wall of the second scraper.

9. The anti-blocking scraper coal feeder according to claim 1, characterized in that: A feed port is arranged on the upper side wall of the box body and corresponds to the head sprocket.

10. The anti-blocking scraper coal feeder according to claim 1, characterized in that: A discharge port is arranged on the lower side wall of the box body corresponding to the tail sprocket.

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