Dust suppression guide chute and parameter determination method

Abstract

The application provides a dust suppression guide chute and a parameter determination method. The dust suppression guide chute comprises a guide chute body, a plurality of guide components, a feed inlet and a discharge outlet. Each guide component comprises a first guide channel, a second guide channel and a third guide channel. The guide channels are connected in a preset angle. A first dust suppression channel is connected with the first end opening and the second end opening of the first guide channel. A second dust suppression channel is connected with the first end opening and the second end opening of the second guide channel. The guide components are connected in a head-to-tail mode to form the guide channel and the dust suppression channel. The material is conveyed from the feed inlet to the discharge outlet through the guide channel, and the dust generated in the material discharging process is suppressed through the dust suppression channel. The application can suppress the dust emission in the material conveying process and keep the environment clean.

Description

Technical Field

[0001] This invention relates to the field of environmental cleaning technology, and in particular to a dust suppression material guide trough and a method for determining its parameters. Background Technology

[0002] Belt conveyors are commonly used material conveying equipment, widely applied in industries such as metallurgy, coal, transportation, power, building materials, chemicals, light industry, grain, and machinery. In power plants, they are crucial for transporting coal. The trough, installed at the receiving point of the belt conveyor, prevents material from spilling out. Its reliable operation is essential for the normal functioning of the belt conveyor. Although the trough occupies a small proportion of the belt conveyor's components, its role is extremely important.

[0003] Due to the height difference at the material transfer point, the potential energy of the material is converted into kinetic energy as it falls in the guide chute, and the speed continuously increases. This results in a strong induced wind at the discharge point, reaching speeds of 1-15 meters per second. Under the positive pressure of the induced wind, a large amount of suspended dust particles are carried and diffused around the guide chute. The dust overflows through the inlet of the guide chute, causing dust dispersion, which affects the working environment and the health of the workers. Summary of the Invention

[0004] The technical problem to be solved by this invention is to provide a dust suppression material guide trough and a method for determining its parameters. This can suppress dust dispersion during material conveying and maintain environmental cleanliness.

[0005] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: A dust suppression material guide trough, comprising: The material guide trough body has a feed inlet at its first end and a discharge outlet at its second end. Multiple material guiding components connect the inlet and outlet. Each feed guide component includes: First material feeding channel; The second material guide channel is bent and connected to the first material guide channel at a preset angle; The third material guiding channel is connected to the second material guiding channel by bending at a preset angle; The first dust suppression channel has a first end opening connected to the first end opening of the first material guiding channel, and the second end opening of the first dust suppression channel is connected to the second end opening of the first material guiding channel. The second dust suppression channel has a first end opening that is connected to the first end opening of the second material guiding channel, and a second end opening that is connected to the second end opening of the second material guiding channel. The first, second, and third material guiding channels of multiple material guiding components are connected end to end to form a material guiding channel; The first and second dust suppression channels of multiple material guiding components are interconnected to form a dust suppression channel; The material is conveyed from the feed inlet to the discharge outlet through the material guide channel, and the dust generated during the material feeding process is suppressed by the dust suppression channel.

[0006] Optionally, both the first dust suppression channel and the second dust suppression channel are U-shaped.

[0007] Optionally, the U-shaped confluence angle between the first dust suppression channel and the second dust suppression channel is within a first preset range.

[0008] Optionally, the flow splitting angle between the first material guiding channel and the second port of the first dust suppression channel, and the flow splitting angle between the second material guiding channel and the second port of the second dust suppression channel are both within a second preset range.

[0009] Optionally, the radius of the material guiding channel is a preset multiple of the radius of the dust suppression channel.

[0010] Optionally, both the inlet and outlet are funnel-shaped.

[0011] Optionally, the flare expansion angles of both the inlet and outlet are within a third preset range.

[0012] Optionally, both the first dust suppression channel and the second dust suppression channel are provided with multiple baffles.

[0013] Embodiments of the present invention also provide a method for determining the parameters of a dust suppression guide trough, wherein the dust suppression guide trough is as described above, and the method includes: Obtain the diameter of the material feeding channel and the diameter of the dust suppression channel; The flow splitting angle is determined based on the diameter of the material guiding channel and the diameter of the dust suppression channel.

[0014] Optional methods for determining the parameters of the dust suppression feed chute also include: Obtain the first centerline vector of the first port of the dust suppression channel and the corresponding second centerline vector of the material guiding channel; The confluence angle is determined based on the first centerline vector and the second centerline vector.

[0015] The above-described technical solution of the present invention has at least the following technical effects: The dust suppression guide trough of the present invention comprises a guide trough body; the first end of the body has a feed inlet, and the second end of the body has a discharge outlet; multiple guide components connect the feed inlet and the discharge outlet; each guide component includes: a first guide channel; a second guide channel, the second guide channel being bent and connected to the first guide channel at a preset angle; a third guide channel, the third guide channel being bent and connected to the second guide channel at a preset angle; and a first dust suppression channel, the first end opening of the first dust suppression channel communicating with the first end opening of the first guide channel. The second end opening of the guide channel is connected to the second end opening of the first guide channel; the first end opening of the second dust suppression channel is connected to the first end opening of the second guide channel, and the second end opening of the second dust suppression channel is connected to the second end opening of the second guide channel; the first guide channel, second guide channel, and third guide channel of multiple guide components are connected end to end to form a guide channel; the first dust suppression channel and second dust suppression channel of multiple guide components are interconnected to form a dust suppression channel; the material is conveyed from the inlet to the outlet through the guide channel, and the dust generated by the material during the feeding process is suppressed by the dust suppression channel. This effectively suppresses dust dispersion during material conveying and maintains environmental cleanliness. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the dust suppression guide trough of the present invention; Figure 2 This is a schematic diagram of the material guiding component of the dust suppression material guiding trough of the present invention; Figure 3 This is a schematic diagram of dust dispersion in the dust suppression and material guiding trough of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1-Main body; 11-Inlet; 12-Outlet; 2-Guiding component; 21-First guiding channel; 22-Second guiding channel; 23-Third guiding channel; 3-First direction; 41-First dust suppression channel; 42-Second dust suppression channel; 5-Second direction. Detailed Implementation

[0018] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0019] like Figure 1 As shown, an embodiment of the present invention provides a dust suppression material guide trough, comprising: The material guide trough body 1; the first end of the body 1 has a feed inlet 11, and the second end of the body 1 has a discharge outlet 12; Multiple material guiding components 2 connect the inlet 11 and the outlet 12; Each feed guide component 2 includes: First material feeding channel 21; The second material guide channel 22 is connected to the first material guide channel 21 by bending at a preset angle. The third material guide channel 23 is connected to the second material guide channel 22 by bending at a preset angle; The first dust suppression channel 41 has a first end opening connected to the first end opening of the first material guiding channel 21, and a second end opening connected to the second end opening of the first material guiding channel 21. The second dust suppression channel 42 has a first end opening that is connected to the first end opening of the second material guiding channel 22, and a second end opening that is connected to the second end opening of the second material guiding channel 22. The first guide channel 21, the second guide channel 22, and the third guide channel 23 of multiple guide components 2 are connected end to end to form a guide channel; The first dust suppression channel 41 and the second dust suppression channel 42 of multiple material guiding components 2 are interconnected to form a dust suppression channel; The material is conveyed from the feed inlet 11 to the discharge outlet 12 through the material guide channel, and the dust generated during the material feeding process is suppressed by the dust suppression channel.

[0020] In this embodiment, as Figure 1 As shown, the dust suppression and material guiding trough includes a body 1, with an inlet 11 and an outlet 12 respectively provided at both ends of the body 1; multiple guiding components 2 are provided between the inlet 11 and the outlet 12, each guiding component 2 is provided with a first guiding channel 21, a second guiding channel 22 and a third guiding channel 23, the first guiding channel 21, the second guiding channel 22 and the third guiding channel 23 are connected end to end and form a lightning bolt shape with continuous left and right bends, and are interconnected to form a guiding channel; a first dust suppression channel 41 and a second dust suppression channel 42 are respectively provided above the sides of the first guiding channel 21 and the second guiding channel 22, the inlet and outlet of the first dust suppression channel 41 are connected to the inlet and outlet of the first guiding channel 21, and the inlet and outlet of the second dust suppression channel 42 are connected to the inlet and outlet of the second guiding channel 22, forming a forked branch loop; In use, the solution of the present invention provides material conveying through the material guide channel and suppresses the dust generated when the material falls through the dust suppression channel, thus preventing dust from overflowing. The overall effect is good and the practicality is strong.

[0021] In an optional embodiment of the present invention, both the first dust suppression channel 41 and the second dust suppression channel 42 are U-shaped.

[0022] In this embodiment, the first dust suppression channel 41 and the second dust suppression channel 42 are set as U-shaped structures with smooth arc transitions, which can eliminate right-angle dust accumulation dead corners, realize dust self-flow and return, and the dust suppression channels are not easy to block; the U-shaped encircling cavity can fully collect the dust-laden airflow escaping from the material guiding channel, stably reduce the airflow speed in the cavity, and improve the efficiency of non-powered dust settling. In an optional embodiment of the present invention, the U-shaped confluence angle between the first dust suppression channel 41 and the second dust suppression channel 42 is within a first preset range.

[0023] In this embodiment, the first preset range of the U-shaped reflux angle between the first dust suppression channel 41 and the second dust suppression channel 42 is 130 degrees to 150 degrees, and the preferred U-shaped reflux angle is 135 degrees, which can better counteract dust dispersion.

[0024] In an optional embodiment of the present invention, the flow splitting angle between the first material guiding channel 21 and the second port of the first dust suppression channel 41, and the flow splitting angle between the second material guiding channel 22 and the second port of the second dust suppression channel 42 are both within a second preset range.

[0025] In this embodiment, the second preset range is 30 degrees to 48 degrees. Preferably, the angle between the first material guiding channel 21 and the second port of the first dust suppression channel 41, and the angle between the second material guiding channel 22 and the second port of the second dust suppression channel 42 are both 45 degrees. This allows the settled dust to flow back to the main material flow along the slope without ash accumulation or pipe blockage. The 45° inclination angle can form a stable return air duct, and the dust-laden airflow forms a local vortex in the channel, extending the dust retention time and greatly improving the dust removal efficiency. At the same time, it avoids dust accumulation in dead corners and blockage of the airflow circuit.

[0026] In an optional embodiment of the present invention, the radius of the material guiding channel is a preset multiple of the radius of the dust suppression channel.

[0027] In this embodiment, the preset multiple is 0.8 to 1.2, that is, the radius of the material guiding channel is 0.8 to 1.2 times the radius of the dust suppression channel, and preferably the radius of the material guiding channel is equal to the radius of the dust suppression channel.

[0028] In an optional embodiment of the present invention, both the inlet 11 and the outlet 12 are funnel-shaped.

[0029] In this embodiment, the feed inlet 11 and the discharge outlet 12 are configured in a funnel shape, which can improve the efficiency of feeding and discharging, and at the same time can gather and smooth the material flow.

[0030] In an optional embodiment of the present invention, the flared opening expansion angles of the inlet 11 and the outlet 12 are both within a third preset range.

[0031] In this embodiment, the third preset range of the flare opening expansion angle is 30 degrees to 35 degrees, with a preferred value of 35 degrees. The suitable angle of the flare opening expansion angle can smoothly gather the material flow, avoid material rebound, breakage and dust generation caused by material blocking; it can gradually change the cross section to smoothly transition the airflow, eliminate the acceleration effect, and make the wind speed in the channel stable ≤1m / s; it can reduce the friction and wear between the material and the side plate, and reduce the frequency of equipment maintenance.

[0032] In an optional embodiment of the present invention, both the first dust suppression channel 41 and the second dust suppression channel 42 are provided with a plurality of baffles.

[0033] In this embodiment, multiple baffles are evenly inclined. The inclined baffles can cut the high-speed airflow, disperse the turbulence, and form multiple low-speed settling zones. They also prevent dust from directly rushing out of the feed chute outlet. Fine particles desorb and settle after impacting the baffles, thus reducing the concentration of dust overflow.

[0034] Embodiments of the present invention also provide a method for determining the parameters of a dust suppression guide trough, wherein the dust suppression guide trough is as described above, and the method includes: Step 21: Obtain the diameter of the material guiding channel and the diameter of the dust suppression channel; Step 22: Determine the flow splitting angle based on the diameter of the material guiding channel and the diameter of the dust suppression channel.

[0035] In this embodiment, the diameter ratio is obtained based on the diameter of the material guiding channel and the diameter of the dust suppression channel. The formula for calculating the diameter ratio is as follows: Where k represents the pipe diameter ratio, Indicates the diameter of the dust suppression channel. This represents the diameter of the material guiding channel; once k is determined, the structure of the dust suppression channel becomes fixed, and vectors are obtained through geometric construction, namely the centerline vector of the first material guiding channel and the centerline vector of the second port of the first dust suppression channel; the formula for calculating the flow splitting angle is: ,in, Indicates the angle between the streams. This represents the centerline vector of the first material guide channel. This represents the centerline vector of the second port of the first dust suppression channel.

[0036] In an optional embodiment of the present invention, the method for determining the parameters of the dust suppression guide trough further includes: Step 23: Obtain the first centerline vector of the first port of the dust suppression channel and the corresponding second centerline vector of the material guiding channel; Step 24: Determine the confluence angle based on the first centerline vector and the second centerline vector.

[0037] In this embodiment, the confluence angle is located at the confluence position of the straight section at the dust suppression channel outlet and the corresponding material guiding channel. The formula for calculating the confluence angle is: ,in, Indicates the confluence angle, Represents the first centerline vector. This represents the vector of the second centerline.

[0038] This method, by determining the parameters of the dust suppression material guide trough, can form a stable return air duct. When the bulk material flows out of the duct, the dust-laden airflow forms a local vortex in the duct, and the pressure difference inside and outside the duct is the same, which prolongs the dust retention time and greatly improves the dust removal efficiency; at the same time, it avoids the accumulation of dust in dead corners and the blockage of airflow loops by agglomeration.

[0039] Embodiments of the present invention also provide a dust suppression and material guiding method, employing a dust suppression and material guiding trough as described in the above embodiments, comprising: Step 31: The material is conveyed from the feed inlet 11 to the guide channel along the first direction 3; Step 32: Dust generated during material conveying is dispersed along the second direction 5 into the material guiding channel and the dust suppression channel, respectively. Step 33: After the dust passes through the dust suppression channel and rotates, it collides with the dust entering the material guide channel, thus counteracting the upward dispersion of the dust.

[0040] In an optional embodiment of the present invention, the first direction 3 and the second direction 5 are opposite.

[0041] In this embodiment, when the dust suppression and material guiding trough is in use, the dust generated when the material falls is first divided into two parts and enters the dust suppression channel and the material guiding channel respectively. Through the U-shaped feature of the dust suppression channel, the dust entering the dust suppression channel can rotate and collide with the dust entering the material guiding channel, thus counteracting the upward dispersion of the dust. Through the multiple material guiding components, the upward dispersion of the dust can be reduced step by step, and finally the dust falls with the material, avoiding the situation of dust dispersion.

[0042] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A dust suppression and material guiding trough, characterized in that, include: The material guide trough body (1) has a feed inlet (11) at the first end and a discharge outlet (12) at the second end. Multiple material guiding components (2) connect the inlet (11) and the outlet (12); Each feed guide component (2) includes: First material feeding channel (21); The second material guide channel (22) is bent and connected to the first material guide channel (21) at a preset angle; The third material guiding channel (23) is connected to the second material guiding channel (22) by bending at a preset angle; The first dust suppression channel (41) has a first end opening connected to the first end opening of the first material guiding channel (21), and a second end opening connected to the second end opening of the first material guiding channel (21). The second dust suppression channel (42) has its first end opening connected to the first end opening of the second material guiding channel (22), and its second end opening connected to the second end opening of the second material guiding channel (22). The first guide channel (21), the second guide channel (22), and the third guide channel (23) of multiple guide components (2) are connected end to end to form a guide channel; The first dust suppression channel (41) and the second dust suppression channel (42) of multiple material guiding components (2) are interconnected to form a dust suppression channel; The material is conveyed from the feed inlet (11) to the discharge outlet (12) through the material guide channel, and the dust generated during the material feeding process is suppressed by the dust suppression channel.

2. The dust suppression and material guiding trough according to claim 1, characterized in that, Both the first dust suppression channel (41) and the second dust suppression channel (42) are U-shaped.

3. The dust suppression and material guiding trough according to claim 2, characterized in that, The U-shaped confluence angle between the first dust suppression channel (41) and the second dust suppression channel (42) is within a first preset range.

4. The dust suppression and material guiding trough according to claim 1, characterized in that, The flow splitting angle between the first material guiding channel (21) and the second port of the first dust suppression channel (41), and the flow splitting angle between the second material guiding channel (22) and the second port of the second dust suppression channel (42) are both within the second preset range.

5. The dust suppression and material guiding trough according to claim 1, characterized in that, The radius of the material guiding channel is a preset multiple of the radius of the dust suppression channel.

6. The dust suppression and material guiding trough according to claim 1, characterized in that, Both the feed inlet (11) and the discharge outlet (12) are funnel-shaped.

7. The dust suppression and material guiding trough according to claim 6, characterized in that, The flare opening expansion angles of the feed inlet (11) and the discharge outlet (12) are both within the third preset range.

8. The dust suppression and material guiding trough according to claim 1, characterized in that, Multiple baffles are provided in both the first dust suppression channel (41) and the second dust suppression channel (42).

9. A method for determining the parameters of a dust suppression material guide trough, characterized in that, The dust suppression material guide trough is the dust suppression material guide trough as described in any one of claims 1 to 8, and the method includes: Obtain the diameter of the material feeding channel and the diameter of the dust suppression channel; The flow splitting angle is determined based on the diameter of the material guiding channel and the diameter of the dust suppression channel.

10. The method for determining the parameters of the dust suppression material guide trough according to claim 9, characterized in that, Also includes: Obtain the first centerline vector of the first port of the dust suppression channel and the corresponding second centerline vector of the material guiding channel; The confluence angle is determined based on the first centerline vector and the second centerline vector.

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