A plugging device for a coal drop chute

Abstract

The utility model discloses a kind of for coal falling pipe's leaking stoppage device, it is related to coal falling pipe maintenance technical field, the device includes coal blocking skin and square head bolt, elastic steel inner support is clamped in coal blocking skin inside, first clamping hole is set in elastic steel inner support middle part, the position corresponding first clamping hole is set in the inner wall of coal blocking skin and is provided with clamping groove, the outer diameter of clamping groove is greater than the outer diameter of first clamping hole, the head of square head bolt is passed through clamping hole and is clamped in clamping groove, and elastic steel outer support and nut are threadedly connected on the threaded section of square head bolt, the utility model is set by the cooperation of coal blocking skin, elastic steel inner support, square head bolt, elastic steel outer support and nut, and the plugging of coal falling pipe breakage can be realized without shutdown welding, effectively solve the problem that existing welding leaking stoppage mode shutdown affects production;And irregular breakage can also achieve better plugging effect, solve the problem of poor irregular breakage plugging effect of welding mode.

Description

Technical Field

[0001] This utility model relates to the field of coal chute maintenance technology, and in particular to a leak-sealing device for coal chute. Background Technology

[0002] In coal conveying systems, the coal chute is a key component connecting various conveying equipment. Constantly subjected to the impact, friction, and abrasion of coal dust, it is prone to localized damage and coal leakage. Current methods for sealing coal chutes often involve directly welding steel plates or binding sealing materials. Welding requires downtime, impacting production efficiency, and is ineffective at sealing irregular damage. Binding sealing materials results in insecure fixation, loosening, and damage from coal impacts, leading to short lifespans, repeated sealing, and increased maintenance costs and workload. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides a leak-sealing device for coal chutes, which solves the problems of production disruption due to downtime, poor sealing effect, unstable fixing, and short lifespan of existing coal chute leak-sealing methods.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows: A leak-sealing device for a coal chute includes a coal plug and a square-headed bolt. An elastic steel inner support is snapped into the inner side of the coal plug, and a first slot is provided in the middle of the elastic steel inner support. A slot is provided on the inner side wall of the coal plug corresponding to the first slot, and the outer diameter of the slot is larger than the outer diameter of the first slot. The head of the square-headed bolt passes through the slot and is snapped into the slot. An elastic steel outer support and a nut are threaded onto the threaded section of the square-headed bolt.

[0005] Furthermore, the inner side of the elastic steel inner support is also provided with nylon cloth, and a second slot corresponding to the first slot is opened in the middle of the nylon cloth.

[0006] Furthermore, the elastic steel inner support is in the shape of an "X".

[0007] Furthermore, the elastic steel outer support is in the shape of a cross.

[0008] Furthermore, the elastic steel outer support is in the shape of an outwardly convex arc.

[0009] Compared with the prior art, the beneficial effects of this utility model are: 1. By using a combination of coal plugs, elastic steel inner supports, square-headed bolts, elastic steel outer supports, and nuts, the damaged parts of the coal chute can be sealed without stopping the machine for welding, effectively solving the problem of production disruption caused by the shutdown of existing welding sealing methods. At the same time, the components are fixed by bolts, making installation and disassembly convenient and facilitating later maintenance and replacement. It can also achieve a good sealing effect on irregular damaged parts, solving the problem of poor sealing effect of welding methods on irregular damaged parts. 2. Nylon cloth is installed on the inner side of the elastic steel inner support. The wear resistance of the nylon cloth can reduce the wear of coal on the elastic steel inner support, extend the service life of the elastic steel inner support, and solve the problem of easy wear of support components in existing leak sealing devices. At the same time, the nylon cloth can fill gaps and improve the sealing performance, solving the problem of coal powder leakage that is easy to occur in existing leak sealing methods. 3. The elastic steel inner support is X-shaped. Its uniform support force and wide support range can effectively disperse the impact force of coal blocks, avoid excessive local stress on the coal plug and damage, improve the impact resistance of the coal plug, and solve the problems of existing plugging materials being easily damaged by coal block impact and having a short plugging life.

[0010] 4. The outer elastic steel support is shaped like a cross, which complements the inner elastic steel support shaped like an X, making the coal plug more evenly stressed, enhancing the structural stability of the plugging device, and solving the problem of the existing binding plugging method being not firmly fixed and easy to loosen. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the coal-blocking sheet in this utility model; Figure 3 This is a side view of the coal slab structure in this utility model; Figure 4 This is a schematic diagram of the elastic steel internal support structure in this utility model; Figure 5 This is a side view of the elastic steel internal support structure in this utility model; Figure 6 This is a schematic diagram of the elastic steel external support structure in this utility model; Figure 7 This is a side view of the elastic steel external support structure in this utility model.

[0012] In the picture: 1. Coal blocking material; 2. Square head bolt; 3. Flexible steel inner support; 4. Slot; 5. Flexible steel outer support; 6. Nut; 7. Nylon cloth; 8. Coal drop pipe; 9. First clamp. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.

[0014] like Figure 1-4 As shown, a leak-sealing device for a coal chute includes a coal plug 1 and a square-headed bolt 2. An elastic steel inner support 3 is snapped into the inner side of the coal plug 1. A first slot 9 is provided in the middle of the elastic steel inner support 3. A slot 4 is provided on the inner wall of the coal plug 1 at the position corresponding to the first slot 9. The outer diameter of the slot 4 is larger than the outer diameter of the first slot 9. The head of the square-headed bolt 2 passes through the slot and is snapped into the slot 4. The outer diameter of the head of the square-headed bolt 2 is larger than the outer diameter of the first slot 9 but smaller than the outer diameter of the slot 4. An elastic steel outer support 5 and a nut 6 are threadedly connected to the threaded section of the square-headed bolt 2. The coal blocking sheet 1 is used to cover the damaged area of ​​the coal drop pipe 8. The elastic steel inner support 3 is snapped into the inside of the coal blocking sheet 1. The square head bolt 2 is connected to the coal blocking sheet 1 by snapping its head into the slot 4. Then, the elastic steel inner support 3 is connected in sequence through the threaded section, and after passing through the damaged area of ​​the coal drop pipe 8, the elastic steel outer support 5 is connected. Finally, the nut 6 is used to lock the parts tightly, thereby achieving the sealing.

[0015] The inner side of the elastic steel inner support 3 is also provided with nylon cloth 7, and a second slot corresponding to the first slot 9 is opened in the middle of the nylon cloth 7. The nylon cloth 7 is fitted on the threaded section of the square head bolt 2 and is located inside the elastic steel inner support 3. It is positioned by cooperating with the square head bolt 2 through the second slot, forming a protective layer between the elastic steel inner support 3 and the coal block, reducing wear and filling gaps.

[0016] The elastic steel inner support 3 is in the shape of an "X". The "X" shaped structure is formed by four elastic steel bars intersecting and connecting, forming the first clamp 9 in the middle. The intersecting structure allows the supporting force to be evenly distributed in all directions, providing comprehensive support for the coal blockage 1.

[0017] The elastic steel outer support 5 is in the shape of a cross. The cross-shaped structure is formed by two elastic steel bars intersecting perpendicularly, with a threaded hole in the middle that mates with the threaded section of the square head bolt 2. It is connected to the square head bolt 2 by threads and supports the coal blockage 1 from the outside of the coal drop pipe 8.

[0018] The elastic steel outer support 5 is in the shape of an outwardly convex arc. The "+" shaped steel bar of the elastic steel outer support 5 is in the shape of an outwardly convex arc, and the curvature of the arc matches the curvature of the outer wall of the coal chute 8, so that it can fit tightly against the outer wall of the coal chute 8.

[0019] When using: The head of the square-headed bolt 2 is engaged in the groove 4 on the inner wall of the coal-blocking sheet 1. Then, the elastic steel inner support 3 and nylon cloth 7 are sequentially installed on the threaded section of the square-headed bolt 2. Next, the threaded section of the square-headed bolt 2 is passed through the side wall of the damaged coal drop pipe 8. Then, the elastic steel outer support 5 is installed on the threaded section. Finally, the nut 6 is used to lock and limit the position, so that the coal-blocking sheet 1 tightly covers the damaged area of ​​the coal drop pipe 8. The various support components work together to achieve reliable sealing of the damaged coal drop pipe 8.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-sealing device for a coal chute, characterized in that, The coal blockage includes a coal sheet (1) and a square head bolt (2). An elastic steel inner support (3) is attached to the inside of the coal blockage (1). A first slot (9) is provided in the middle of the elastic steel inner support (3). A slot (4) is provided on the inner wall of the coal blockage (1) at the position corresponding to the first slot (9). The outer diameter of the slot (4) is larger than the outer diameter of the first slot (9). The head of the square head bolt (2) passes through the slot and is attached to the slot (4). An elastic steel outer support (5) and a nut (6) are threadedly connected to the threaded section of the square head bolt (2).

2. A leak-sealing device for a coal chute (8) according to claim 1, characterized in that, The inner side of the elastic steel inner support (3) is also provided with nylon cloth (7), and a second slot corresponding to the first slot (9) is opened in the middle of the nylon cloth (7).

3. A leak-sealing device for a coal chute (8) according to claim 2, characterized in that, The elastic steel inner support (3) is in the shape of an "X".

4. A leak-sealing device for a coal chute (8) according to claim 3, characterized in that, The elastic steel outer support (5) is in the shape of a cross.

5. A leak-sealing device for a coal chute (8) according to claim 4, characterized in that, The elastic steel outer support (5) is in the shape of an outwardly convex arc.

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