Curve chute device for reducing dust diffusion

Abstract

The utility model provides a curved chute device for reducing dust diffusion. The curve chute device comprises a collecting hopper, a first curve chute and a second curve chute, the collecting hopper is used for receiving coal materials, the first curve chute is installed below the collecting hopper and communicated with the collecting hopper, the first curve chute is used for conveying the coal materials to the coal conveying belt, and the second curve chute is installed below the collecting hopper and communicated with the collecting hopper. The second curve chute is used for conveying the coal materials to the coal conveying belt. The device can reduce the diffusion degree of the materials, reduces the impact force of the materials on the coal conveying belt by controlling the flow and the flow speed of the materials, and reduces the generation of dust.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of material transportation, and in particular relates to a curved chute device for reducing dust diffusion. BACKGROUND

[0002] In the process of belt transportation in an open-pit coal mine, the transition area where the chute contacts the belt is a key link for dust generation. Due to the collision, friction of coal with the chute wall, and the drop of the material, dust is easily raised at this stage, causing environmental pollution and potential harm to the health of miners. Traditional dust control measures, such as a spray system or a closed conveying device, can reduce the dust problem to some extent, but the effect is often limited, and requires high equipment investment and maintenance costs. CONTENT OF THE UTILITY MODEL

[0003] The technical problem solved by the present application is how to effectively reduce dust diffusion in the process of coal transportation.

[0004] The present application provides a curved chute device for reducing dust diffusion, which comprises:

[0005] a collecting hopper for receiving coal material;

[0006] a first curved chute installed below and communicating with the collecting hopper, the first curved chute being used for conveying coal material to a coal belt;

[0007] a second curved chute installed below and communicating with the collecting hopper, the second curved chute being used for conveying coal material to a coal belt.

[0008] Optionally, a rotatable flap is installed inside the collecting hopper, the flap being used for adjusting the flow rate and flow direction of the coal material in the collecting hopper.

[0009] Optionally, the first curved chute comprises a first chute section and a first feeding spoon section in communication with each other, the first chute section communicating with the collecting hopper.

[0010] Optionally, a rotatable first flow plate is installed inside the first feeding spoon section, the first flow plate being used for adjusting the flow rate and flow of the coal material in the first feeding spoon section.

[0011] Optionally, the second curved chute comprises a second chute section and a second feeding spoon section in communication with each other, the second chute section communicating with the collecting hopper.

[0012] Optionally, a rotatable second flow plate is installed inside the second feeding spoon section, the second flow plate being used for adjusting the flow rate and flow of the coal material in the second feeding spoon section.

[0013] Optionally, the curved chute device further comprises a three-way shunt device, the three-way shunt device is installed at the bottom of the collecting hopper, and three ports of the three-way shunt device are respectively communicated with the collecting hopper, the first curved chute and the second curved chute.

[0014] The curved chute device for reducing dust diffusion provided in the application has the following technical effects:

[0015] The device can reduce the diffusion degree of the material, control the flow and flow rate of the material, reduce the impact force of the material on the coal conveying belt, and reduce dust generation. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a perspective view of a curved chute device for reducing dust diffusion according to one or more embodiments;

[0017] Figure 2 FIG. 2 is a sectional view of a curved chute device for reducing dust diffusion according to one or more embodiments. DETAILED DESCRIPTION

[0018] In order to make the purposes, technical solutions and advantages of the application clearer, further detailed description will be made to the application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application and do not limit the application.

[0019] Before describing the various embodiments of the application in detail, first, the technical concept of the application is simply described: at present, dust is easily generated in the transportation process of open-pit coal mines, especially in the process of coal falling, which will pollute the environment and harm the human body on the one hand, and will increase the cost if special dust removal equipment is added on the other hand. Therefore, the application provides a curved chute device for reducing dust diffusion, which comprises a collecting hopper and a first curved chute and a second curved chute. First, the collecting hopper is used to concentrate the coal material to be transported, thereby reducing the diffusion degree of the material, and then the material is guided to the impact force of the coal conveying belt through the first curved chute and the second curved chute, thereby controlling the flow and flow rate of the material, reducing the impact force of the material on the coal conveying belt, and reducing dust generation. The specific principle of the curved chute device for reducing dust diffusion of the application will be described in combination with more embodiments.

[0020] Specifically, as Figure 1 , Figure 2As shown, the curve chute device for reducing dust diffusion in the embodiment comprises a collecting hopper 10, a first curve chute 20, and a second curve chute 30. The collecting hopper 10 is used for receiving coal materials. The first curve chute 20 is installed below the collecting hopper 10 and communicates with the collecting hopper 10. The first curve chute 20 is used for conveying the coal materials to a coal conveying belt. The second curve chute 30 is installed below the collecting hopper 10 and communicates with the collecting hopper 10. The second curve chute 20 is used for conveying the coal materials to the coal conveying belt. The coal materials entering the collecting hopper 10 are divided into two routes and conveyed to the coal conveying belt through the first curve chute 20 and the second curve chute 30. Since the material flow is too fast and the scattered materials can form a broken flow and generate a vacuum section, thereby inducing air into the material flow and causing dust to be raised, the concentration of the material flow through the collecting hopper 10 can effectively avoid such problems.

[0021] In one or more embodiments, the curve chute device further comprises a three-way shunt device 40 installed at the bottom of the collecting hopper 10. The three-way shunt device 40 has three ports respectively communicating with the collecting hopper 10, the first curve chute 20, and the second curve chute 30, so that the coal materials can be shunted.

[0022] Exemplarily, a rotatable flap 11 is installed inside the collecting hopper 10. The flap 11 is used for adjusting the flow rate and flow direction of the coal materials in the collecting hopper 10. By rotating the flap 11 and adjusting the inclination angle and inclination direction of the flap 11, the flow rate of the coal materials and the amount of the materials flowing into the first curve chute 20 and the second curve chute 30 can be adjusted.

[0023] In one or more embodiments, the first curve chute 20 comprises a first chute section 21 and a first feeding spoon section 22 communicating with each other. The first chute section 21 communicates with the collecting hopper 10. The first chute section 21 is connected to one port of the three-way shunt device 40 and has a certain inclination angle. By reducing the impact angle (the theoretical angle is 15 to 20 degrees) of the material flow on the coal pipe wall, the dust generated by the impact is reduced, and the momentum of the material flow is maintained as much as possible. This design can effectively reduce the violent friction between the materials and the chute wall and reduce dust generation. The material flow slides along the pipe wall at a controllable speed through the optimized curve chute design, avoiding broken flow or introducing too much air due to the too fast material flow. In this way, not only can the blockage problem be prevented, but the induced wind can also be reduced, and the dust can be effectively controlled.

[0024] Further, the first feeding spoon section 22 is internally provided with a rotatable first material flow plate 23, which is used to adjust the flow rate and flow volume of the coal material of the first feeding spoon section 22. The first feeding spoon section 22 has a certain curvature, that is, a curved first feeding spoon section 22 is adopted. The specially designed first feeding spoon section 22 gradually loads the material onto the coal conveying belt, so as to ensure that the moving direction of the coal material is consistent with the running direction of the coal conveying belt, and the flow rate of the material is close to the speed of the belt. The first feeding spoon section 22 can accurately guide the gathered material to the center of the coal conveying belt at a proper speed and angle, reduce the impact of the material on the coal conveying belt, reduce the belt wear, reduce the dust generation, and avoid eccentric loading.

[0025] In one or more embodiments, the second curved chute 30 includes a second chute section 31 and a second feeding spoon section 32 in communication, and the second chute section 31 is in communication with the material collecting hopper 10. The second chute section 31 is connected with one port of the three-way shunt device 40, and has a certain inclination angle. The function of the second chute section 31 can be referred to the above description of the first chute section 21. Further, the second feeding spoon section 32 is internally provided with a rotatable second material flow plate 33, which is used to adjust the flow rate and flow volume of the coal material of the second feeding spoon section 32. The second feeding spoon section 32 has a certain curvature, that is, a curved second feeding spoon section 32 is adopted. The function of the second feeding spoon section 32 can be referred to the above description of the first feeding spoon section 22.

[0026] In this embodiment, the shape and structure of the first curved chute 20 and the second curved chute 30 can be obtained by algorithm optimization. Specifically, combined with the original data of the on-site belt conveyor, a 3D discrete element model (DEM) platform is used to simulate the material flow. Through simulation and fine tuning, a curved chute structure meeting the on-site requirements is finally designed. This system can effectively control the flow direction of the material, buffer the speed of the material, reduce the impact force of the material, and reduce the generation of dust and material blockage problems from the root.

[0027] For example, in the computer-aided design (CAD) software, a three-dimensional geometric model of the chute is first established, and the discrete element method (DEM) is used to divide it into multiple particle units, each particle representing a particle or particle group in the material. The model includes the inner lining material of the chute, the curved design, and the feeding spoon. The modeling of the material particles needs to select an appropriate particle contact model and consider the friction, adhesion, collision and rebound of the particles. During the simulation process, the boundary conditions of the chute must be set.

[0028] To optimize the design of the chute, the particle swarm optimization algorithm (PSO) is used to adjust the design parameters to reduce the contact intensity of the material with the chute wall, thereby reducing the amount of dust generated. By optimizing the shape of the curve, the angle, and the friction coefficient of the lining material, the resistance to material flow is reduced, the phenomenon of blockage is avoided, and the angle of the chute is optimized to reduce friction. In the design of the chute, several optimization variables can be defined to guide the optimization process. The radius of the chute curve, the inclination angle of the chute wall, and the friction coefficient of the lining material are the main parameters for optimization. The purpose is to consider the influence of the design scheme on dust generation, material flow rate, and equipment wear and tear. The optimized chute design will be applied to the field, and data such as dust, material flow rate, and belt wear will be monitored in real time and compared with the simulation results. If deviations are found, the design parameters will be further adjusted and re-optimized until the actual application can meet the requirements.

[0029] The curved chute device for reducing dust diffusion of the present embodiment has the following technical effects:

[0030] (1) Dust control: By optimizing the material flow path and speed, the dust raised during the transportation of the material is effectively reduced, the working environment is improved, and air pollution is reduced.

[0031] (2) Reduce material blockage: The curved chute device avoids the problem of material blockage in traditional systems, improving the working efficiency and stability of the equipment.

[0032] (3) Prolong the service life of the equipment: The design of the feeding spoon reduces the impact of the material on the belt, reduces the wear of the belt, and prolongs the service life of the equipment.

[0033] (4) Improve work efficiency: The precise design of the device makes the material loading more smooth, reduces the labor intensity of the operators, and improves the production efficiency.

[0034] (5) Reduce dust generation: The unique "curve" design of the curved chute technology can effectively control the material flow and reduce the impact force of the material on the chute wall. By changing the path and speed of the material flow, the dust generated by the violent collision of the material is fundamentally reduced, thereby achieving effective control of the dust.

[0035] (6) Optimize material flow rate and direction: The feeding spoon part of the curved chute can accurately adjust the flow rate and direction of the material, so that the material flow can be smoothly guided to the center of the belt and "placed" in the appropriate position. This design effectively reduces the impact of the material flow on the belt, reduces the wear of the belt, controls the generation of dust, and avoids the problems caused by eccentric loading, ensuring the smooth operation of the belt.

[0036] (7) Wear resistance and durability: The curved chute is lined with wear-resistant material, which has the characteristics of smoothness, wear resistance, and resistance to strong impact. This material not only effectively reduces the frictional resistance during the flow of the material, but also has a long service life. The service life of the lined part can reach more than 5 years, while the service life of other parts can reach more than 10 years, greatly reducing maintenance costs and equipment replacement frequency.

[0037] (8) Noise reduction: Due to the change in the falling method of the material by the curved chute, the material reduces the violent collision with the chute wall during the flow, thereby reducing the generation of noise. This improvement provides a more quiet working environment for the mining area, which helps to improve the working conditions of employees and reduce environmental pollution.

[0038] The specific embodiments of the present application are described in detail above, although some embodiments have been shown and described, those skilled in the art should understand that modifications and improvements can be made to these embodiments without departing from the principles and spirits of the present application, which are defined by the claims and their equivalents.

Claims

1. A curved chute apparatus for reducing dust dispersion, characterized by, The curved chute device comprises: a collecting hopper for receiving coal materials; a first curved chute installed below and communicated with the collecting hopper, the first curved chute being used for conveying coal materials to a coal conveying belt; a second curved chute installed below and communicated with the collecting hopper, the second curved chute being used for conveying coal materials to a coal conveying belt.

2. The curved chute apparatus for reducing dust dispersion according to claim 1, wherein, A rotatable flap is installed inside the collecting hopper, the flap being used for adjusting the flow rate and flow direction of the coal materials in the collecting hopper.

3. The curved chute apparatus for reducing dust dispersion according to claim 1, wherein, The first curved chute comprises a first chute section and a first feeding spoon section which are communicated with each other, the first chute section being communicated with the collecting hopper.

4. The curved chute apparatus for reducing dust dispersion according to claim 3, wherein A rotatable first flow plate is installed inside the first feeding spoon section, the first flow plate being used for adjusting the flow rate and flow volume of the coal materials in the first feeding spoon section.

5. The curved chute apparatus for reducing dust dispersion of claim 1, wherein, The second curved chute comprises a second chute section and a second feeding spoon section which are communicated with each other, the second chute section being communicated with the collecting hopper.

6. The curved chute arrangement for reducing dust dispersion according to claim 5, characterized in that, A rotatable second flow plate is installed inside the second feeding spoon section, the second flow plate being used for adjusting the flow rate and flow volume of the coal materials in the second feeding spoon section.

7. The curved chute arrangement for reducing dust dispersion according to any one of claims 1 to 6, characterized in that, The curved chute device further comprises a three-way flow dividing device, the three-way flow dividing device being installed at the bottom of the collecting hopper, three ports of the three-way flow dividing device being respectively communicated with the collecting hopper, the first curved chute and the second curved chute.

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