A coal mine ground production system chute

Abstract

The utility model relates to the technical field of coal mine chute, especially to a chute of coal mine ground production system, including chute body, the chute body includes roof, the roof bottom surface symmetry is provided with side plate no. One, the roof bottom surface is provided with backstop no. One, backstop no. One bottom surface is provided with backstop no. Two, backstop no. Two one side is provided with bottom plate no. Two, and two groups side plate no. The bottom surface is provided with side plate no. Two. The chute of coal mine ground production system disclosed by the utility model, by setting up the material accumulation platform surrounded by backstop no. Two, bottom plate no. One and inclined plate at the chute entrance, make the upstream material first accumulate here to form the dynamic material cushion layer. The subsequent material mainly impacts on this cushion layer, realize the buffer mode of " material hits material", greatly reduce the direct impact and friction of material to the chute bottom plate, side plate and other steel structural members, significantly reduce the impact noise in the equipment operation process.

Description

Technical Field

[0001] This utility model relates to the field of coal mine chute technology, and in particular to a chute for a coal mine surface production system. Background Technology

[0002] In coal mine surface production systems, chutes are key transfer components connecting different transportation or processing equipment (such as crushers, screening machines, belt conveyors, etc.), responsible for receiving, guiding, and transferring coal or gangue materials. Their performance directly affects the operating efficiency, reliability, and working environment of the entire production system.

[0003] Traditional chutes have a simple structure. Material is thrown at high speed from upstream equipment, directly impacting the chute's bottom plate and sidewalls, causing severe impact and friction. Although some chutes use thickened steel plates or locally laid wear-resistant liners, this still cannot effectively mitigate the direct damage to the steel structure from the material. This leads to extremely rapid wear on the chute, especially in critical areas such as the receiving point and turning points, requiring frequent shutdowns for repair or replacement. This not only increases maintenance costs and material consumption significantly but also severely impacts the continuous operating efficiency of the production system. Therefore, we propose a chute design for coal mine surface production systems. Utility Model Content

[0004] The main objective of this invention is to provide a chute for a coal mine surface production system, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A chute for a coal mine surface production system includes a chute body, the chute body including a top plate, side plates symmetrically arranged on the bottom surface of the top plate, a rear baffle plate 1 arranged on the bottom surface of the top plate, a rear baffle plate 2 arranged on the bottom surface of the rear baffle plate 1, a bottom plate 1 arranged on one side of the rear baffle plate 2, side plates 2 arranged on the bottom surfaces of two sets of side plates 1, an inclined plate and a guide plate respectively arranged between the two sets of side plates 2, a vertical plate 1 arranged on the bottom surface of the inclined plate, a bottom plate 2 arranged on one side of the guide plate 1, a vertical plate 2 arranged on one side of the bottom plate 2, a dust collection box arranged on one side of the rear baffle plate 1, and an exhaust pipe connected to the right side of the dust collection box.

[0006] Preferably, a mounting groove is provided on the left side of the connection between side plate one and side plate two, and a rotating roller is provided in the mounting groove.

[0007] By adopting the above technical solution: the top plate, side plate 1 and rear baffle 1 are all made of Q235 ordinary steel plate with a thickness of 8mm, and other parts are made of NM400 steel plate with a thickness of 30mm.

[0008] Preferably, the side plate has mounting plates symmetrically arranged on one side, and the upper surface of the mounting plates has reinforcing ribs symmetrically arranged on the upper surface.

[0009] By adopting the above technical solutions: the top plate, side plate 1, and rear baffle 1 are non-direct, high-intensity impact zones, and ordinary steel plates are used to save costs while ensuring structural strength. The bottom plate, side plate 2, and other parts that directly bear the impact and friction of coal flow are made of thicker, extremely hard wear-resistant steel plates, which can significantly extend the service life of these vulnerable parts and reduce the frequency of replacement and downtime.

[0010] Preferably, the top plate is connected by a second rear baffle, a first bottom plate, and an inclined plate to form a material accumulation platform with the first bottom plate as the bottom. A through groove is provided on one side of the first rear baffle, and an intercepting net is provided in the through groove.

[0011] By adopting the above technical solution: when the material is supplied, the earth and stone are piled on the material accumulation platform. The subsequent material from the conveyor system impacts the material accumulation platform. The material is worn down by the collision between the materials. The material accumulation platform only serves to receive the material, minimizing the direct impact between the material and the chute wall and reducing losses. At the same time, the impact noise between the materials is much lower than the impact noise between the material and the steel plate.

[0012] Preferably, the through slot is connected to the dust collection box, the interception net is inclined, the upper surface of the dust collection box has a slot, the upper surface of the dust collection box has symmetrical threaded grooves on both sides of the slot, a filter plate is provided in the slot, a pull plate is provided on the upper surface of the filter plate, and two sets of bolts are symmetrically inserted on the upper surface of the pull plate.

[0013] Preferably, one end of the bolt penetrates the upper surface of the filter plate and extends into the threaded groove, the bolt is threadedly engaged with the threaded groove, the exhaust pipe is located on the right side of the filter plate, and the free end of the exhaust pipe is connected to a dust collection fan.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model establishes a material accumulation platform at the chute inlet, consisting of a second rear baffle, a first bottom plate, and an inclined plate. This platform allows incoming material from upstream to first accumulate and form a dynamic material cushion layer. Subsequent material primarily impacts this cushion layer, achieving a "material-on-material" buffering method. This significantly reduces the direct impact and friction of material on the chute's bottom plate, side plates, and other steel structural components, substantially reducing impact noise during equipment operation. Consequently, it extends the service life of critical vulnerable parts and reduces maintenance costs and downtime.

[0015] 2. This utility model innovatively connects the dust collection box and the dust-generating area of ​​the chute through a through-slot, and forms a negative pressure suction system in conjunction with an external dust collection fan. Dust generated during material falling and colliding is effectively sucked into the dust collection box. After initial separation of large particles by an inclined intercepting net, it is further purified by easily removable and replaceable filter plates. This system effectively controls dust dispersion at the chute transfer point, significantly improves the working environment of coal mine surface production systems, and meets environmental protection and occupational health requirements. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a chute in a coal mine surface production system according to the present invention. Figure 2 This is a left view of a chute in a coal mine surface production system according to the present invention. Figure 3 In this utility model Figure 2 Cross-sectional view of section AA; Figure 4 This is an exploded view of a chute in a coal mine surface production system according to this utility model.

[0017] In the diagram: 100, chute body; 1, top plate; 2, side plate one; 3, rear baffle one; 30, through chute; 301, interception net; 4, rear baffle two; 5, bottom plate one; 6, inclined plate; 7, guide plate; 8, side plate two; 9, vertical plate one; 10, bottom plate two; 11, vertical plate two; 12, mounting groove; 120, rotating roller; 80, mounting plate; 801, reinforcing rib; 13, material accumulation platform; 14, dust collection box; 140, exhaust pipe; 141, slot; 142, filter plate; 143, pull plate; 144, bolt; 145, threaded groove. Detailed Implementation

[0018] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0019] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] Please see Figure 1-4 This utility model provides a technical solution: A chute for a coal mine surface production system includes a chute body 100, which includes a top plate 1. Side plates 2 are symmetrically arranged on the bottom surface of the top plate 1. A rear baffle 3 is arranged on the bottom surface of the top plate 1. A second rear baffle 4 is arranged on the bottom surface of the second rear baffle 3. A bottom plate 5 is arranged on one side of the second rear baffle 4. Side plates 8 are arranged on the bottom surfaces of the two sets of side plates 2. An inclined plate 6 and a guide plate 7 are respectively arranged between the two sets of side plates 8. A vertical plate 9 is arranged on the bottom surface of the inclined plate 6. A bottom plate 10 is arranged on one side of the guide plate 7. A vertical plate 11 is arranged on one side of the bottom plate 10. A dust collection box 14 is provided on one side of the rear baffle 3. An exhaust pipe 140 is connected to the right side of the dust collection box 14. An installation groove 12 is provided on the left side of the connection between the side plate 1 2 and the side plate 2 8. A rotating roller 120 is provided in the installation groove 12. An installation plate 80 is symmetrically provided on one side of the side plate 2 8. A reinforcing rib 801 is symmetrically provided on the upper surface of the installation plate 80. The top plate 1 is connected by the rear baffle 2 4, the bottom plate 1 5 and the inclined plate 6 to form a material accumulation platform 13 with the bottom plate 1 5 as the bottom. A through groove 30 is provided on one side of the rear baffle 3. An intercepting net 301 is provided in the through groove 30.

[0022] In this embodiment, the through slot 30 communicates with the dust collection box 14, the interception net 301 is inclined, the upper surface of the dust collection box 14 has a slot 141, and the upper surface of the dust collection box 14 has symmetrical threaded grooves 145 on both sides of the slot 141. A filter plate 142 is provided in the slot 141, and a pull plate 143 is provided on the upper surface of the filter plate 142. Two sets of bolts 144 are symmetrically inserted on the upper surface of the pull plate 143. One end of the bolt 144 passes through the upper surface of the pull plate 143 and extends into the threaded groove 145. The bolt 144 and the threaded groove 145 are threadedly engaged. The exhaust pipe 140 is located on the right side of the filter plate 142, and the free end of the exhaust pipe 140 is connected to a dust collection fan.

[0023] Through the above scheme: the material is thrown into the chute body 100 from the upstream equipment, and first falls into the accumulation platform 13 formed by the rear baffle 4, the bottom plate 5, and the inclined plate 6. The accumulation platform 13 is not used for long-term storage, but forms a dynamic material cushion layer. Subsequent incoming material first impacts the already accumulated material cushion layer, realizing "material hitting material", thereby greatly reducing the direct impact and wear of the material on the steel structure components such as the bottom plate 5, and significantly reducing impact noise. Subsequently, the material slides down the guide plate 7 under the action of gravity and is discharged from the lower opening of the vertical plate 11 to the downstream equipment; the material will... A large amount of dust is generated. This area is surrounded by the top plate 1, the rear baffle 3, etc., forming a semi-enclosed dust generation chamber. The external dust collection fan generates a continuous negative pressure in the dust collection box 14 through the exhaust pipe 140. This negative pressure acts on the material accumulation platform 13 space through the through groove 30. When the dust-laden air is sucked into the through groove 30, the inclined intercepting net 301 will block most of the splashed large particles and make them fall back into the material accumulation platform 13, achieving preliminary separation. After the dust-laden air enters the dust collection box 14, it flows through the filter plate 142. The dust is intercepted and attached by the filter plate 142, and the purified air is drawn away by the fan through the exhaust pipe 140. When the filter plate 142 needs to be cleaned or replaced, loosen the bolt 144 and pull the filter plate 142 out of the slot 141 by pulling the pull plate 143. Maintenance is convenient. Meanwhile, the bottom plate 5, inclined plate 6, side plate 8, bottom plate 10 and other parts that directly bear the impact and friction of high-speed materials are made of thick NM400 high-strength wear-resistant steel plates to resist wear with hardness and thickness.

[0024] It should be noted that the material is thrown into the chute body 100 from the upstream equipment and first falls into the accumulation platform 13 formed by the rear baffle 4, the bottom plate 5, and the inclined plate 6. The accumulation platform 13 is not for long-term storage, but forms a dynamic material cushion. Subsequent incoming material first impacts the already accumulated material cushion, achieving "material-on-material" action, thereby greatly reducing the direct impact and wear of the material on the steel structure components such as the bottom plate 5, and significantly reducing impact noise. Subsequently, the material slides down the guide plate 7 under the action of gravity and is discharged from the lower opening of the vertical plate 11 to the downstream equipment. During the process of falling into the accumulation platform 13 and subsequent collisions and sliding, the material will... A large amount of dust is generated. This area is surrounded by the top plate 1, the rear baffle 3, etc., forming a semi-enclosed dust generation chamber. The external dust collection fan generates a continuous negative pressure in the dust collection box 14 through the exhaust pipe 140. This negative pressure acts on the material accumulation platform 13 space through the through groove 30. When the dust-laden air is sucked into the through groove 30, the inclined intercepting net 301 will block most of the splashed large particles and make them fall back into the material accumulation platform 13, achieving preliminary separation. After the dust-laden air enters the dust collection box 14, it flows through the filter plate 142. The dust is intercepted and attached by the filter plate 142, and the purified air is drawn away by the fan through the exhaust pipe 140. When the filter plate 142 needs to be cleaned or replaced, loosen the bolt 144 and pull the filter plate 142 out of the slot 141 by pulling the pull plate 143. Maintenance is convenient. Meanwhile, the bottom plate 5, inclined plate 6, side plate 8, bottom plate 10 and other parts that directly bear the impact and friction of high-speed materials are made of thick NM400 high-strength wear-resistant steel plate to resist wear with hardness and thickness. The filter plate 142 can be replaced with different materials according to the usage requirements.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A chute for a coal mine surface production system, comprising a chute body (100), characterized in that: The chute body (100) includes a top plate (1), a side plate (2) symmetrically arranged on the bottom surface of the top plate (1), a rear baffle (3) arranged on the bottom surface of the top plate (1), a rear baffle (4) arranged on the bottom surface of the rear baffle (3), a bottom plate (5) arranged on one side of the rear baffle (4), a side plate (8) arranged on the bottom surface of the two sets of side plates (2), an inclined plate (6) and a guide plate (7) respectively arranged between the two sets of side plates (8), a vertical plate (9) arranged on the bottom surface of the inclined plate (6), a bottom plate (10) arranged on one side of the guide plate (7), a vertical plate (11) arranged on one side of the bottom plate (10), a dust collection box (14) arranged on one side of the rear baffle (3), and an exhaust pipe (140) connected to the right side of the dust collection box (14).

2. The chute of a coal mine surface production system according to claim 1, characterized in that: A mounting groove (12) is provided on the left side of the connection between the first side plate (2) and the second side plate (8), and a rotating roller (120) is provided in the mounting groove (12).

3. The chute of a coal mine surface production system according to claim 1, characterized in that: The side plate 2 (8) has a mounting plate (80) symmetrically arranged on one side, and the upper surface of the mounting plate (80) has a reinforcing rib (801) symmetrically arranged.

4. The chute of a coal mine surface production system according to claim 1, characterized in that: The top plate (1) is connected by the rear baffle (4), the bottom plate (5) and the inclined plate (6) to form a material accumulation platform (13) with the bottom plate (5) as the bottom. A through groove (30) is provided on one side of the rear baffle (3), and an intercepting net (301) is provided in the through groove (30).

5. The chute of a coal mine surface production system according to claim 4, characterized in that: The through slot (30) is connected to the dust collection box (14). The interception net (301) is inclined. The upper surface of the dust collection box (14) is provided with a slot (141). The upper surface of the dust collection box (14) is provided with threaded grooves (145) symmetrically on both sides of the slot (141). A filter plate (142) is provided in the slot (141). A pull plate (143) is provided on the upper surface of the filter plate (142). Two sets of bolts (144) are symmetrically inserted on the upper surface of the pull plate (143).

6. The chute of a coal mine surface production system according to claim 5, characterized in that: One end of the bolt (144) penetrates the upper surface of the pull plate (143) and extends into the threaded groove (145). The bolt (144) is threadedly engaged with the threaded groove (145). The exhaust pipe (140) is located on the right side of the filter plate (142). The free end of the exhaust pipe (140) is connected to a dust collector.

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