Dust suppression device used in trestle of belt conveyor
By designing dust suppression devices with guide troughs, feed pipes, return pipes and dustproof covers in the belt conveyor trench, the problem of coal dust diffusion is solved, the self-dust reduction effect is achieved, and the cleanliness of the working environment is protected.
Patent Information
- Application Number
- CN202422414231.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the belt conveyor trest, coal dust is prone to spread during the transportation process, pollutes the working environment and affects the health of the operators. The existing devices cannot effectively control the spread of coal dust.
A dust suppression device including a material guide trough, feed pipe, return pipe and dustproof cover is designed. The impact force of coal material is reduced by tilting the feed pipe, and the feed trough buffering and discharge port are accurately blanked. The coal dust is refluxed by negative pressure of the return pipe, and combined with dust detection and vacuuming system to achieve self-dust reduction.
It effectively reduces the diffusion of coal dust, reduces the dust flow rate, reduces the amount of coal dust in the corridor, and protects the cleanliness of the working environment.
Smart Images
Figure CN223133567U_ABST
Abstract
Description
Technical Field:
[0001] The utility model relates to the technical field of coal dust prevention and control, and particularly relates to a dust suppression device for a belt conveyor trestle. Background Art:
[0002] The belt conveyor trestle is a connecting passage for coal mine storage and transportation, mainly composed of a steel structure corridor and a belt conveyor device for conveying materials inside the corridor. The steel structure corridor usually requires to be enclosed on all sides to prevent coal dust generated during the conveying process of coal materials from polluting the environment.
[0003] Currently, a material guiding trough is fixed on the frame of the belt conveyor. The material guiding trough is a rectangular box body with an open bottom. A feed pipe is vertically penetrated through the top surface of the corridor. The discharge end of the feed pipe is placed inside the material guiding trough. After the coal material enters the material guiding trough through the feed pipe, it falls onto the belt working surface through the bottom opening of the material guiding trough. Due to the relatively high height of the feed pipe, the instantaneous impact force of the coal material on the belt working surface is relatively strong, which is easy to damage the belt surface. And during the falling process of the material, due to the height difference and the gravity of the falling coal material, the pulverized coal is impacted when it falls onto the belt, and small particulate dust in the pulverized coal will inevitably be stirred up and diffused. The diffused coal dust is sealed in the material guiding trough and cannot be discharged in time. The coal dust will enter the corridor along the running direction of the belt, polluting the working environment and affecting the physical health of the operating personnel. Content of the Utility Model:
[0004] The purpose of the utility model is to provide a dust suppression device for a belt conveyor trestle.
[0005] The utility model is implemented by the following technical solutions: A dust suppression device for a belt conveyor trestle, which includes a material guiding trough, a feed pipe, a reflux pipe, and a dust-proof cover; the feed pipe is fixedly penetrated downward through the top surface of the corridor of the belt conveyor trestle, the material guiding trough is fixed on the frame of the belt conveyor, the discharge port of the feed pipe is hermetically communicated with the feed port of the material guiding trough, the bottom of the material guiding trough is provided with an outwardly convex arc surface, and a discharge port is opened along the running direction of the coal material at the bottom of the arc surface; the reflux pipe is communicated with the top of the material guiding trough, and the outlet end of the reflux pipe is communicated with the middle of the feed pipe; the dust-proof cover is fixedly covered on the outer wall of the material guiding trough at the discharge port, and the bottom edge of the dust-proof cover extends to below the discharge port of the material guiding trough.
[0006] Preferably, the feed pipe includes a vertical section and an inclined section, the vertical section and the inclined section are integrally formed from top to bottom, the inclined section penetrates through the top surface of the corridor and is hermetically communicated with the feed port of the material guiding trough, and the included angle range α between the inclined section and the horizontal direction is 60° - 75°.
[0007] Preferably, baffles are provided on both sides of the belt conveyor along the running direction of the coal material. The top of the baffle is fixedly connected to the bottom edge of the dust-proof cover, and the bottom of the baffle extends below the upper belt.
[0008] Preferably, a buffer bed is fixed on the frame between the upper and lower belts. The buffer bed includes a base, springs and a support plate. The base is fixed on the frame between the upper and lower belts, and the support plate is connected above the base by a number of evenly arranged springs.
[0009] Preferably, the support plate is an arc-shaped alloy wear-resistant steel plate, and the upper surface of the alloy wear-resistant steel plate is in sliding contact with the non-working surface of the upper belt.
[0010] Preferably, a dust concentration detector is fixed on the dust-proof cover near the head side of the belt conveyor. A dust suction hood is provided above the upper belt near the dust concentration detector. The outlet of the dust suction hood is connected to a dust removal pipeline, and the outlet end of the dust removal pipeline passes through the top surface of the corridor and is connected to the inlet of the induced draft fan.
[0011] Preferably, the dust concentration detector is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the power switch of the induced draft fan.
[0012] Advantages of the present utility model: The present utility model feeds coal material into the guide chute through a feed pipe. The feed pipe includes a vertical section and an inclined section. By setting the inclined section of the feed pipe, the coal material can fall along an inclined plane, reducing the impact force of the coal material on the working surface of the belt and lowering the flow rate of coal dust. Secondly, the bottom of the guide chute is provided with an outwardly convex arc surface, and a discharge port is opened along the running direction of the coal material at the bottom of the arc surface. On the one hand, the guide chute can play a certain buffering role, reducing the impact force of the coal material on the working surface of the belt. On the other hand, the discharge port of the guide chute is conducive to the coal material falling precisely on the belt, and the coal material flowing onto the belt along the arc surface can reduce the flow rate of coal dust, and the dust stirred up when the coal material descends can be controlled within the guide chute as much as possible to reduce spillage. In addition, a return pipe is connected to the top of the guide chute, and the outlet end of the return pipe is connected to the inclined section of the feed pipe. When the coal material descends along the feed pipe, due to the drop and the gravitational acceleration of the coal material falling, an induced wind is generated downward and a negative pressure is formed in the feed pipe. According to the principle of pressure balance, a negative pressure can be generated in the return pipe and an upward air flow can be formed. Most of the coal dust in the guide chute can flow back into the feed pipe through the return pipe, achieving the purpose of self-dust reduction and reducing the amount of coal dust entering the corridor. Description of the drawings:
[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0014] Figure 1 is a structural schematic diagram of the present invention.
[0015] Figure 2 is Figure 1 the A-A cross-sectional view of
[0016] The markings of each component in the drawings are as follows: material guiding groove 1, arc surface 1.1, discharge port 1.1.1, feed pipe 2, vertical section 2.1, inclined section 2.2, return pipe 3, dust-proof cover 4, baffle 5, buffer bed 6, base 6.1, spring 6.2, support plate 6.3, corridor 7, dust concentration detector 8, dust suction hood 9, dust removal pipeline 10, induced draft fan 11, controller 12, upper belt 13. Specific embodiments:
[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.
[0018] As Figure 1 - Figure 2 shown, a dust suppression device for a belt conveyor trestle includes a material guiding groove 1, a feed pipe 2, a return pipe 3, a dust-proof cover 4, a baffle 5 and a buffer bed 6;
[0019] A feed pipe 2 is fixedly penetrated downward from the top surface of the corridor 7 of the belt conveyor trestle. The feed pipe 2 includes a vertical section 2.1 and an inclined section 2.2. The vertical section 2.1 and the inclined section 2.2 are integrally formed from top to bottom. The included angle range α between the inclined section 2.2 and the horizontal direction is 60° to 75°. By setting the inclined section 2.2, the coal material can fall along the inclined surface, reducing the impact force of the coal material on the working surface of the belt and lowering the flow rate of the coal dust. A material guiding trough 1 is fixed on the frame of the belt conveyor. The inclined section 2.2 of the feed pipe 2 passes through the top surface of the corridor 7 and is hermetically connected to the feed inlet of the material guiding trough 1. On the one hand, the material guiding trough 1 can play a certain buffering role, reducing the impact force of the coal material on the working surface of the belt. On the other hand, the material guiding trough 1 can control the dust stirred up when the coal material falls within the material guiding trough 1 as much as possible, reducing the spillage. The bottom of the material guiding trough 1 is provided with an outwardly convex arc surface 1.1. A discharge port 1.1.1 is opened at the bottom of the arc surface 1.1 along the running direction of the coal material, which is conducive to the coal material falling accurately on the belt. And the coal material flows onto the upper belt 13 along the arc surface 1.1, which can reduce the flow rate of the coal dust and the amount of coal dust spillage. A return pipe 3 is connected to the top of the material guiding trough 1. The outlet end of the return pipe 3 is connected to the inclined section 2.2 of the feed pipe 2. When the coal material falls along the feed pipe 2, due to the head difference and the gravitational acceleration of the falling coal material, an induced wind is generated downward and a negative pressure is formed in the feed pipe 2. According to the principle of pressure balance, a negative pressure can be generated in the return pipe 3 and an upward air flow can be formed. Most of the coal dust in the material guiding trough 1 can flow back into the feed pipe 2 through the return pipe 3, achieving the purpose of self-dust reduction and reducing the amount of coal dust entering the corridor 7.
[0020] A dust-proof cover 4 is fixedly covered on the outer wall of the material guiding trough 1 at the discharge port 1.1.1. The bottom edge of the dust-proof cover 4 extends below the discharge port 1.1.1 of the material guiding trough 1, so that the coal dust can flow within the dust-proof cover 4 as much as possible and, under the action of the return pipe 3, flow back into the feed pipe 2 as much as possible. Baffles 5 are respectively arranged on both sides of the belt conveyor along the running direction of the coal material. The top of the baffle 5 is fixedly connected to the bottom edge of the dust-proof cover 4, and the bottom of the baffle 5 extends below the upper belt 13. The baffle 5 blocks the direct spillage of the coal dust from both sides of the belt conveyor.
[0021] A buffer bed 6 is fixed on the frame between the upper and lower belts. The buffer bed 6 includes a base 6.1, springs 6.2 and a support plate 6.3. The base 6.1 is fixed on the frame between the upper and lower belts. A support plate 6.3 is connected above the base 6.1 through a number of uniformly arranged springs 6.2. The impact force of the coal material on the working surface of the belt can be absorbed to the maximum extent through the buffering of the springs 6.2, avoiding damage to the belt surface. The support plate 6.3 is an arc-shaped alloy wear-resistant steel plate. The upper surface of the alloy wear-resistant steel plate is in sliding contact with the non-working surface of the upper belt 13. Since the upper surface of the alloy wear-resistant steel plate is smooth and the friction force with the upper belt 13 is small, the smooth running of the conveyor belt can be ensured.
[0022] The utility model further comprises a dust concentration detector 8, a dust suction hood 9, a dust removal pipeline 10 and an induced draft fan 11. The dust concentration detector 8 is fixed on the dust-proof cover 4 near the head side of the belt conveyor. Above the upper belt 13 near the dust concentration detector 8, there is a dust suction hood 9. The outlet of the dust suction hood 9 is communicated with the dust removal pipeline 10. The outlet end of the dust removal pipeline 10 passes through the top surface of the aisle 7 and is communicated with the inlet of the induced draft fan 11. The dust concentration detector 8 is electrically connected to the input end of the controller 12, and the output end of the controller 12 is electrically connected to the power switch of the induced draft fan 11. When the dust concentration detector 8 detects that the coal dust concentration near the dust-proof cover 4 is relatively high, the controller 12 controls the induced draft fan 11 to start, sucking the coal dust overflowing around the dust-proof cover 4 out of the aisle 7.
[0023] Working process: Coal materials enter the material guiding trough 1 through the feeding pipe 2. The material guiding trough 1 can control the dust generated by the falling of coal materials as much as possible within the material guiding trough 1, reducing the spillage. And when the coal materials fall along the feeding pipe 2, due to the head difference and the gravitational acceleration of the falling coal materials, an induced wind is generated downward, and a negative pressure is formed in the feeding pipe 2. According to the principle of pressure balance, a negative pressure can be generated in the return pipe 3 and an upward air flow is formed. The coal dust generated in the material guiding trough 1 can flow back into the feeding pipe 2 through the return pipe 3; the coal materials are discharged from the discharge port 1.1.1 at the bottom of the arc surface 1.1 of the material guiding trough 1 onto the upper belt 13. The buffer bed 6 absorbs the impact force of the coal materials on the working surface of the upper belt 13 to the greatest extent, reducing the flow rate of the coal dust, making the coal dust flow within the dust-proof cover 4 as much as possible, and flowing back into the feeding pipe 2 as much as possible under the negative pressure action of the return pipe 3; when the dust concentration detector 8 detects that the coal dust concentration near the dust-proof cover 4 is relatively high, the controller 12 controls the induced draft fan 11 to start, sucking the coal dust overflowing around the dust-proof cover 4 out of the aisle 7.
[0024] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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.
Claims
1. A dust suppression device for a belt conveyor trestle, characterized in that It includes a material guiding trough, a feed pipe, a reflux pipe and a dust-proof cover; the feed pipe is fixedly penetrated downward through the top surface of the corridor of the belt conveyor trestle, the material guiding trough is fixed on the frame of the belt conveyor, the discharge port of the feed pipe is hermetically communicated with the feed port of the material guiding trough, the bottom of the material guiding trough is provided with an outwardly convex arc surface, and a discharge port is arranged at the bottom of the arc surface along the running direction of the coal material; the reflux pipe is communicated with the top of the material guiding trough, and the outlet end of the reflux pipe is communicated with the middle part of the feed pipe; the dust-proof cover is fixedly covered on the outer wall of the material guiding trough at the discharge port, and the bottom edge of the dust-proof cover extends to the lower part of the discharge port of the material guiding trough.
2. The dust suppression device for the belt conveyor trestle according to claim 1, characterized in that, The feed pipe includes a vertical section and an inclined section, the vertical section and the inclined section are integrally formed from top to bottom, the inclined section passes through the top surface of the corridor and is hermetically communicated with the feed port of the material guiding trough, and the included angle range α between the inclined section and the horizontal direction is 60° to 75°.
3. The dust suppression device for a belt conveyor trestle according to claim 1 or 2, characterized in that, Baffles are respectively arranged on both sides of the belt conveyor along the running direction of the coal material, the top of the baffle is fixedly connected with the bottom edge of the dust-proof cover, and the bottom of the baffle extends to the lower part of the upper belt.
4. The dust suppression device for a belt conveyor trestle according to claim 3, characterized in that, A buffer bed is fixed on the frame between the upper and lower belts, the buffer bed includes a base, springs and a support plate, the base is fixed on the frame between the upper and lower belts, and the support plate is connected above the base through a plurality of uniformly arranged springs.
5. The dust suppression device for a belt conveyor trestle according to claim 4, characterized in that, The support plate is an arc-shaped alloy wear-resistant steel plate, and the upper surface of the alloy wear-resistant steel plate is in sliding contact with the non-working surface of the upper belt.
6. The dust suppression device for a belt conveyor trestle according to claim 1, characterized in that, A dust concentration detector is fixed on the dust-proof cover near the head side of the belt conveyor, a dust suction hood is arranged above the upper belt near the dust concentration detector, the outlet of the dust suction hood is communicated with a dust removal pipeline, and the outlet end of the dust removal pipeline passes through the top surface of the corridor and is communicated with the inlet of the induced draft fan.
7. The dust suppression device for the belt conveyor trestle according to claim 6, characterized in that, The dust concentration detector is electrically connected to the input end of the controller, and the output end of the controller is electrically connected to the power switch of the induced draft fan.