Device for conveying, transferring and collecting mine bulk materials

Abstract

The utility model discloses a mine bulk material conveying, transferring and collecting device, and relates to the technical field of transferring and collecting, the mine bulk material conveying, transferring and collecting device comprises a discharging assembly, a collecting box and a middle frame, the middle frame is connected with supporting legs, the bottom of the discharging assembly is inserted into the collecting box, and the middle frame is provided with a material guide groove, a heavy buffer bed and a buffer carrier roller; the top of the material guide groove is communicated with the opening in the bottom of the material collecting box, the heavy buffering bed is arranged below the material guide groove, and the buffering carrier roller is arranged at the bottom of the heavy buffering bed. The material falling impact force is reduced through the heavy buffer bed and the buffer carrier rollers, and the service life of the device is prolonged.

Description

A material transfer and collection device for bulk material conveying in mines Technical Field

[0001] This utility model relates to the field of transfer and collection technology, specifically a transfer and collection device for conveying bulk materials in mines. Background Technology

[0002] In belt conveyor systems, hoppers (chutes or guide chutes) are crucial components for the transition of materials from a higher position (such as the discharge point) to a lower position or the next section of the conveyor belt. Because early belt conveyors had small conveying capacities and low belt speeds, most discharged materials directly into the hoppers of transfer chutes. As conveyor capacity and speed increased, material could rebound from the surface of the impact plates, creating uncontrolled material flow within the transfer chute. This could lead to poor load-bearing capacity on the receiving conveyor, causing misalignment, chute wear, and blockage. If the drop height is excessive (exceeding 5m), reducing the impact force of the falling material becomes particularly important. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a material collection and transfer device for conveying bulk materials in mines. This device reduces the impact force of falling materials by using a heavy-duty buffer bed and buffer rollers, and also reduces noise.

[0004] The purpose of this utility model is achieved through the following technical solution: a material conveying and transferring device for mining bulk materials, the device including a feeding component, a collection box and an intermediate frame, the intermediate frame being connected to support legs, the bottom of the feeding component being inserted into the collection box, the intermediate frame being provided with a guide trough, a heavy-duty buffer bed and a buffer roller, the top of the guide trough being connected to the bottom opening of the collection box, the heavy-duty buffer bed being located below the guide trough, and the buffer roller being located at the bottom of the heavy-duty buffer bed and used to receive materials sliding down along the heavy-duty buffer bed.

[0005] The feeding assembly includes a frame, a hopper, and a chute for transferring bulk material from an upstream belt conveyor to a lower-level downstream belt conveyor. The hopper is connected to the frame, and the bottom opening of the hopper communicates with the top of the chute. The material-bearing surface of the chute is stepped, and the bottom of the chute is inserted into a collection box.

[0006] The funnel is equipped with an inspection door on its side, which is large enough to facilitate maintenance and inspection, and the upper part of the funnel is equipped with a dust cover.

[0007] The dust cover is a rubber dust curtain. The rubber material is dense and thick, which can effectively block pollutants such as dust, debris, and insects from entering.

[0008] The funnel, chute, and collection box are made of low-carbon steel plate, which is inexpensive and has low maintenance costs.

[0009] The inner walls of the funnel and chute are equipped with several weld overlay wear-resistant liners with a thickness of not less than 24mm. The several weld overlay wear-resistant liners are arranged in an alternating manner to prevent the bottom from falling off due to material impact and wear. The chute is also equipped with an anti-blockage detector to detect whether there is blockage in the chute. Inspection holes are provided on the non-material impact surface of the chute to facilitate maintenance personnel to replace the weld overlay wear-resistant liners.

[0010] The angle between the funnel and the chute and the horizontal plane is not less than 70 degrees, which facilitates the sliding of materials.

[0011] The outriggers include Type I outriggers and Type II outriggers, and the Type II outriggers are provided with diagonal braces.

[0012] The periphery of the collection box is provided with a material collection device support for supporting the collection box, and the material collection device support is connected to the support leg.

[0013] The intermediate frame is also equipped with a parallel lower idler roller for supporting the return conveyor belt, and the parallel lower idler roller is located below the buffer idler roller.

[0014] The beneficial effects of this utility model are:

[0015] 1. This utility model greatly reduces the impact force of falling materials by using chutes, heavy-duty buffer beds and buffer rollers.

[0016] 2. This utility model effectively solves the technical problems of easy replacement and high wear of the transfer and collection device of heavy-duty and wide-width belt conveyors, increases the service life of chutes, heavy-duty buffer beds and buffer rollers, and the overall stability of the collection device, and can effectively ensure the long-term and stable operation of the transfer point of high-drop belt conveyors. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of this utility model;

[0018] Figure 2 is a left view of Figure 1;

[0019] Figure 3 is a schematic diagram of the chute structure;

[0020] Figure 4 shows the arrangement of wear-resistant lining plates welded inside the chute;

[0021] Figure 5 is a structural schematic diagram of the collection box and the support for the collection device;

[0022] Figure 6 is the left view of Figure 5;

[0023] In the diagram: 1-frame, 2-hopper, 3-chute, 4-collection box, 5-collection device support, 6-guide chute, 7-heavy-duty buffer bed, 8-buffer roller, 9-parallel lower roller, 10-intermediate frame, 11-type II support leg, 12-type I support leg. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] In one embodiment of this application:

[0027] As shown in Figures 1 to 6, a material conveying and collecting device for mining bulk materials includes a feeding assembly, a collection box 4, and an intermediate frame 10. The intermediate frame 10 is connected to the support legs. The bottom of the feeding assembly is inserted into the collection box 4. The intermediate frame 10 is equipped with a guide trough 6, a heavy-duty buffer bed 7, and a buffer roller 8. The top of the guide trough 6 is connected to the bottom opening of the collection box 4. The heavy-duty buffer bed 7 is located below the guide trough 6 to absorb the impact force when the material falls. The buffer roller 8 is located at the bottom of the heavy-duty buffer bed 7 and is also used to receive the material sliding down the heavy-duty buffer bed 7. The buffer roller 8 is divided into three parts: a left part, a middle part, and a right part. The middle part is level with the horizontal plane. The left and right parts are inclined upward along the middle part, forming an obtuse angle with the middle part to disperse the downward impact force of the heavy-duty buffer bed 7.

[0028] The feeding assembly includes a frame 1, a hopper 2, and a chute 3. The hopper 2 is fixedly connected to the frame 1, and its bottom opening communicates with the top of the chute 3. The bottom of the chute 3 is inserted into and fixed in the collection box 4. The material receiving surface of the chute 3 is designed in a stepped manner to create a "material feeding" effect. Both the top and bottom of the hopper 2 can be arranged as receiving ports. The top receiving port is used to load loose material from the platform into the hopper 2. The receiving port is designed with a cross-section that gradually decreases in size, which is beneficial for material concentration and also promotes the flow of material in the material cushion layer. The hopper 2, chute 3, and collection box 4 are designed according to the maximum flow rate, maximum particle size, and maximum moisture content of the material, and also meet the capacity requirements of the chute 3 during emergency stops. The design ensures that regardless of the size of the material flow, the material can be guided to the center of the receiving conveyor and prevent dust from escaping. The cross-sectional area of ​​the chute 3 is not less than three times the cross-sectional area of ​​the material when the maximum flow rate passes through.

[0029] The funnel 2, chute 3 and collection box 4 are made of 12mm thick low carbon steel plate and are appropriately reinforced to prevent deformation during material discharge and blockage.

[0030] The inner walls of hopper 2 and chute 3 are equipped with several easily replaceable welded wear-resistant liners at the points of contact with the material flow. The base material is a 12mm thick Q355B steel plate with a weld overlay thickness of 12mm. The wear-resistant plate has a hardness of HRC≥58, a carbon content of 4-5%, and a chromium content of not less than 30%. Each liner has at least 4 mounting bolts, which are pre-embedded. Each liner weighs no more than 25kg. All liner gaps are controlled within 10mm. Chute 3 is also equipped with an anti-blocking detector. The mounting hole for the anti-blocking detector is located on the non-material impact surface of chute 3, and is located 1 / 3 to 2 / 3 of the way up from the lower end of chute 3, further strengthening the anti-blocking risk control. Inspection holes are provided on the non-material impact surface of chute 3 to facilitate the replacement of liners by maintenance personnel, as shown in Figure 4. Reinforcing ribs are added to the material-bearing surfaces (i.e., the surfaces that bear the falling material) of hopper 2, chute 3, and collection box 4 to greatly enhance their strength and prevent deformation during material falling and blockage.

[0031] The angle between the funnel 2 and the chute 3 and the horizontal plane shall not be less than 70 degrees.

[0032] The material collection box 4 is surrounded by a material collection device support 5, and the material collection box 4 is fixed to the material collection device support 5. The material collection device support 5 is connected to the support leg. The material on the platform enters from the top opening of the funnel 2, and then enters the chute 3 from the bottom opening of the funnel 2. Since the material receiving surface of the chute 3 is designed as a stepped type, some of the material falls directly onto the first step, and then slides down from the first step to the second step. During the sliding process, it will collide with another part of the material that falls directly onto the second step, forming a "material hitting material" effect, which helps to unload the material that falls directly onto the second step and reduce the impact force on the material receiving surface of the chute 3. Then the material enters the material collection box 4 along the chute 3, and then falls into the heavy-duty buffer bed 7 through the bottom opening of the material collection box 4. Finally, it slides down the heavy-duty buffer bed 7 onto the buffer roller 8 of the receiving conveyor.

[0033] In another embodiment of this application:

[0034] Based on the previous embodiment, this embodiment improves the funnel 2. The side of the funnel 2 is provided with two inspection doors that can be opened during operation. The doors are symmetrically arranged and large enough to facilitate maintenance and inspection. The upper part of the funnel 2 is provided with a dust cover.

[0035] The dust cover consists of two rubber dust curtains.

[0036] The intermediate frame 10 is also equipped with a parallel lower idler roller 9 for supporting the return conveyor belt. The parallel lower idler roller 9 is located below the buffer idler roller 8.

[0037] The outriggers include type I outrigger 12 and type II outrigger 11. Type II outrigger 11 is equipped with diagonal bracing. The connection between the intermediate frame 10 and type I outrigger 12 and type II outrigger 11 has an elongated hole, which can adjust the installation position.

[0038] The above description is merely an embodiment of this utility model. It should be understood that this utility model is not limited to the form disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A material handling and transfer device for bulk material conveying in mines, characterized in that: It includes a feeding assembly, a collection box (4) and an intermediate frame (10). The intermediate frame (10) is connected to the support legs. The bottom of the feeding assembly is inserted into the collection box (4). The intermediate frame (10) is provided with a guide trough (6), a heavy-duty buffer bed (7) and a buffer roller (8). The top of the guide trough (6) is connected to the bottom opening of the collection box (4). The heavy-duty buffer bed (7) is located below the guide trough (6). The buffer roller (8) is located at the bottom of the heavy-duty buffer bed (7).

2. A mine bulk material transfer and stockpiling apparatus according to claim 1 wherein: The feeding assembly includes a frame (1), a hopper (2) and a chute (3). The hopper (2) is connected to the frame (1). The bottom opening of the hopper (2) is connected to the top of the chute (3). The material receiving surface of the chute (3) is stepped. The bottom of the chute (3) is inserted into the collection box (4).

3. A mine bulk material transfer and stockpiling apparatus according to claim 2 wherein: The funnel (2) has an inspection door on its side and a dust cover on its upper part.

4. A mine bulk material transfer and stockpiling apparatus according to claim 3 wherein: The dust cover is a rubber dust curtain.

5. A mine bulk material transfer and stockpiling apparatus according to claim 2 wherein: The funnel (2), chute (3) and collection box (4) are made of low carbon steel plate.

6. A mine bulk material transfer and stockpiling apparatus according to claim 2 wherein: The inner walls of the funnel (2) and the chute (3) are provided with welded wear-resistant lining plates, and the chute (3) is also provided with inspection holes and anti-clogging detectors.

7. A material transfer and collection device for bulk material conveying in mines according to claim 2, characterized in that: The angle between the funnel (2) and the chute (3) and the horizontal plane is not less than 70 degrees.

8. A mine bulk material transfer and stockpiling apparatus according to claim 1 wherein: The outriggers include type I outriggers (12) and type II outriggers (11), and the type II outriggers (11) are provided with diagonal braces.

9. A device for collecting material in a mine for bulk material transfer according to claim 1 or 8, characterised in that: The material collection box (4) is provided with a material collection device support (5) around its perimeter, and the material collection device support (5) is connected to the support leg.

10. A material handling and transfer device for bulk material conveying in mines according to claim 1, characterized in that: The intermediate frame (10) is also provided with a parallel lower roller (9), which is located below the buffer roller (8).

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