Workshop dust removal device

Abstract

The workshop dust removal device comprises a negative pressure machine, a main pipeline and a plurality of auxiliary pipelines, the main pipeline is communicated with an air inlet of the negative pressure machine, the main pipeline is provided with a plurality of connecting ports arranged in an array mode, each connecting port is communicated with the auxiliary pipeline extending to a workshop, each connecting port is provided with a valve, and the auxiliary pipelines are provided with dust collection holes. Negative pressure is generated through the negative pressure machine, an airflow environment lower than the atmospheric pressure is formed in the main pipeline, and dust-containing air is sucked in through the dust suction holes of the auxiliary pipeline and enters the negative pressure machine sequentially through the auxiliary pipeline, the connecting opening and the main pipeline. And the valves at the connecting ports can independently control the on-off of the corresponding auxiliary pipelines.

Description

Technical Field

[0001] The present invention relates to the field of dust prevention, and in particular to a workshop dust removal device. Background Art

[0002] In the door manufacturing workshop, processes such as wood processing and metal cutting will generate a large amount of dust. If not handled in time, it will not only affect product quality, but also cause harm to workers' health.

[0003] Existing dust removal methods include wet electrostatic precipitators and negative pressure dust removal. Wet electrostatic precipitators remove dust using a high-voltage electric field combined with a spray spray. They are highly adaptable to high humidity and corrosive gases, but the inner walls of the equipment are susceptible to corrosion, and wastewater treatment costs are high. Negative pressure dust removal equipment often uses a tree-like structure with a single main pipeline and branch pipelines. A negative pressure machine generates negative pressure airflow within the single main pipeline and branch pipelines. However, the airflow generates vortices at the branches, resulting in a significant decrease in dust collection efficiency in areas away from the main pipeline, causing large differences in dust concentration gradients within the workshop.

[0004] Therefore, the tree-shaped pipeline layout leads to uneven air flow resistance, and the fixed aperture of the air inlet cannot adapt to the difference in dust concentration at different workstations. It is urgent to provide a new branch pipeline layout. Summary of the Invention The present invention aims to provide a workshop dust removal device to solve the problem that the negative pressure dust removal equipment in the prior art has dead corners, resulting in reduced dust collection effect.

[0005] A workshop dust removal device includes a negative pressure machine, a main pipeline and multiple auxiliary pipelines. The main pipeline is connected to the air inlet of the negative pressure machine. The main pipeline is provided with multiple connecting ports arranged in an array. Each connecting port is connected to the auxiliary pipeline extending to the workshop, and each connecting port is provided with a valve. The auxiliary pipeline is provided with a dust suction hole.

[0006] Working principle and beneficial effects of the present invention: The negative pressure generated by the vacuum pump creates an airflow environment below atmospheric pressure in the main duct. Dust-laden air is sucked in through the suction holes in the secondary duct, then passes through the secondary duct, the connector, and the main duct into the vacuum pump. The valve at the connector can independently control the opening and closing of the corresponding secondary duct.

[0007] Through the combination of main pipes, multiple auxiliary pipes and valves, precise control of the dust removal area can be achieved to avoid ineffective dust collection and dead corners.

[0008] Optimally, the connection ports are evenly spaced along the axis of the main pipeline, the spacing between adjacent connection ports is 0.5m, the main pipeline is provided with a card slot, and the connection ports and the card slot are card-connected.

[0009] The connectors are evenly spaced 0.5m apart along the main pipe axis and clip into place via slots. This spacing ensures dense placement of secondary pipes in high-dust areas, such as wood cutting lines, and the clip-on design allows the number of connectors to be adjusted to suit the workshop layout.

[0010] Optimized, the secondary duct includes a first duct for adsorbing suspended dust, the dust suction holes on the first duct are spirally distributed, with a hole diameter of 8 to 10 mm and a hole spacing of 5 to 8 cm, and the angle between the first duct and the horizontal direction is 45 to 50°; it also includes a second duct for adsorbing settled dust and extending vertically downward, the dust suction holes on the second duct are distributed at its bottom, with a hole diameter of 10 to 12 mm and a hole spacing of 3 to 5 cm; it also includes a third duct for adsorbing sticky dust, the inner wall of the dust suction hole has an anti-sticking layer, the orifice of the dust suction hole is provided with a chamfered corner, and a guide plate is added on the inside of the third duct.

[0011] The spirally distributed suction holes in the first duct, tilted at a 45-50° angle, create a fan-shaped airflow field, ideal for applications involving lightweight suspended dust such as wood fibers. The second duct extends vertically downward, with the densely packed suction holes at the bottom generating high air velocity to counteract the gravitational settling of heavy dust such as metal debris (which requires strong suction at close range). The third duct's anti-stick coating (e.g., polytetrafluoroethylene) reduces resin powder adhesion, while the rounded corners and deflectors minimize airflow disturbances, preventing turbulent deposition of sticky dust (such as adhesive volatiles from edge banding), making it suitable for adsorbing sticky dust.

[0012] Optimally, a guide cone is provided inside the main pipe at the upstream of each connection port, with the cone tip facing the direction of the airflow, the guide cone is connected to the support rib, and an axial guide groove is provided on the surface of the guide cone.

[0013] The guide cone upstream of the connection port directs the turbulent airflow toward the axis of the main pipe with the cone tip facing the direction of the airflow. The guide groove reduces wind resistance and prevents the airflow from forming vortices at the connection port, which can cause dust deposition.

[0014] In an optimized configuration, the guide cone and support ribs are connected in a vertically rotatable manner, and the main conduit is equipped with a motor to drive the guide cone. This motor drives the guide cone to rotate around the vertical axis, dynamically adjusting the tilt angle (adapting the airflow direction of the secondary conduit in different usage scenarios). For example, when switching to the first conduit, the motor adjusts the guide cone to 30-45°; when switching to the second conduit, it adjusts to 60-75°.

[0015] Optimized, the downward inclination angle of the guide cone near the first pipe is 30 to 45 degrees, the downward inclination angle of the guide cone near the second pipe is 60 to 75 degrees, and the downward inclination angle of the guide cone near the second pipe is 15 to 30 degrees. The first pipe corresponds to the downward inclination angle of the guide cone of 30 to 45 degrees, balancing the turning efficiency and wind speed distribution of the oblique airflow to ensure that the suspended dust is evenly transported in the airflow; similarly, the second pipe corresponds to the angle of the guide cone of 60 to 75 degrees, and the large angle guides the vertical airflow to the horizontal main pipe to avoid the sedimentation of heavy dust due to the turning resistance. The third pipe corresponds to the angle of the guide cone of 15 to 30 degrees, and the small angle cooperates with the laminar airflow to reduce disturbances and prevent sticky dust from adhering. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the structure of the dust removal device in Example 1; Figure 2 Schematic diagram of the structure of the dust removal device in Example 2; Figure 3 for Figure 2 Schematic diagram of the structure of the first pipeline; Figure 4 for Figure 2 Schematic diagram of the structure of the second pipeline; Figure 5 for Figure 2 Schematic diagram of the structure of the third pipeline; Figure 6 Schematic diagram of the internal structure of the dust removal device in Example 3.

[0017] The figure marks in the specification include: connecting port 1, dust suction hole 2, auxiliary pipe 3, main pipe 4, negative pressure machine 5, valve 6, first pipe 7, second pipe 8, third pipe 9, guide plate 10, guide groove 11, guide cone 12, support rib 13, and motor 14. DETAILED DESCRIPTION

[0018] The following is further described in detail through specific implementation methods: Example 1: Figure 1 The figure shows a workshop dust removal device comprising a vacuum pump 5, a main pipe 4, and eight secondary pipes 3. The main pipe 4 is fixedly connected to the air inlet of the vacuum pump 5. The main pipe 4 is provided with eight connecting ports 1 arranged in an array. Each connecting port 1 is fixedly connected to and connected to a secondary pipe 3 extending into the workshop. Each connecting port 1 is equipped with a valve 6. The secondary pipes 3 are provided with dust suction holes 2. The spacing between adjacent connecting ports 1 is 0.5m. The main pipe 4 is provided with a slot, and the connecting ports 1 and the slot are connected by a bolt.

[0019] Negative pressure is generated by the negative compressor 5, creating an airflow environment below atmospheric pressure within the main duct 4. Dust-laden air is sucked in through the dust suction holes 2 of the secondary duct 3, then passes through the secondary duct 3, the connector 1, and the main duct 4 into the negative compressor 5. The valve 6 at the connector 1 can independently control the opening and closing of the corresponding secondary duct 3.

[0020] Example 2: Figures 2 to 5 As shown, the secondary duct 3 includes a first duct 7 for adsorbing suspended dust, the dust suction holes 2 on the first duct 7 are spirally distributed, with a pore diameter of 8 to 10 mm and a hole spacing of 5 to 8 cm. The angle between the first duct 7 and the horizontal direction is 45 to 50 degrees; it also includes a second duct 8 for adsorbing settled dust and extending vertically downward, the dust suction holes 2 on the second duct 8 are distributed at its bottom, with a pore diameter of 10 to 12 mm and a hole spacing of 3 to 5 cm; it also includes a third duct 9 for adsorbing sticky dust, the inner wall of the dust suction hole 2 has an anti-sticking layer, the orifice of the dust suction hole 2 is provided with a chamfered corner, and a guide plate 10 is added on the inner side of the third duct 9.

[0021] Example 3: Figure 6 As shown, a guide cone 12 is provided inside the main pipe 4 at the upstream of each connecting port 1, with the cone tip facing the direction of the airflow. The guide cone 12 is fixedly connected to the support rib 13, and an axial guide groove 11 is provided on the surface of the guide cone 12. The main pipe 4 is fixedly provided with a motor 14 for driving the guide cone 12 to rotate.

[0022] The downward inclination angle of the guide cone 12 near the first pipe 7 is 30 to 45 degrees, the downward inclination angle of the guide cone 12 near the second pipe 8 is 60 to 75 degrees, and the downward inclination angle of the guide cone 12 near the second pipe 8 is 15 to 30 degrees. The first pipe 7 corresponds to the downward inclination angle of the guide cone 12 of 30 to 45 degrees, balancing the turning efficiency of the oblique airflow and the wind speed distribution, ensuring that the suspended dust is evenly transported in the airflow; similarly, the second pipe 8 corresponds to the angle of the guide cone 12 of 60 to 75 degrees, and the large angle guides the vertical airflow to turn to the horizontal main pipe 4, preventing heavy dust from settling due to turning resistance. The third pipe 9 corresponds to the angle of the guide cone 12 of 15 to 30 degrees, and the small angle cooperates with the laminar airflow to reduce disturbances and prevent sticky dust from adhering.

[0023] For example, when switching to the first pipeline 7, the motor 14 adjusts the rightmost guide cone 12 to 30-45°; when switching to the second pipeline 8, the motor 14 adjusts the two guide cones 12 on the right to 60-75°; when switching to the third pipeline 9, the motor 14 adjusts the three guide cones 12 on the right to 15-30°.

[0024] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the description can be used to interpret the content of the claims.

Claims

1. A workshop dust removal device, comprising a negative pressure machine, a main pipeline and a plurality of auxiliary pipelines, wherein the main pipeline is connected to the air inlet of the negative pressure machine, characterized in that: The main pipeline is provided with a plurality of connecting ports arranged in an array, each connecting port is connected to a secondary pipeline extending to the workshop, and each connecting port is provided with a valve, and the secondary pipeline is provided with a dust suction hole.

2. The workshop dust removal device according to claim 1, characterized in that: The connecting ports are evenly spaced along the axis of the main pipeline, and the spacing between adjacent connecting ports is 0.5 to 1 m. The main pipeline is provided with a clamping groove, and the connecting ports are clamped with the clamping groove.

3. The workshop dust removal device according to claim 2, characterized in that: The secondary duct includes a first duct for absorbing suspended dust, the dust suction holes on the first duct are distributed in a spiral shape, with a hole diameter of 8 to 10 mm and a hole spacing of 5 to 8 cm. The angle between the first duct and the horizontal direction is 45 to 50 degrees; it also includes a second duct for absorbing settled dust and extending vertically downward, the dust suction holes on the second duct are distributed at its bottom, with a hole diameter of 10 to 12 mm and a hole spacing of 3 to 5 cm; it also includes a third duct for absorbing sticky dust, the inner wall of the dust suction hole has an anti-sticking layer, the orifice of the dust suction hole is provided with a chamfered corner, and a guide plate is added on the inner side of the third duct.

4. The workshop dust removal device according to claim 3, characterized in that: A guide cone is provided inside the main pipe at the upstream of each connection port, with the cone tip facing the direction of the airflow. The guide cone is connected to the support rib, and an axial guide groove is provided on the surface of the guide cone.

5. The workshop dust removal device according to claim 4, characterized in that: The guide cone and the support ribs fix the motor, and the main pipeline is provided with a motor for driving the support ribs to rotate up and down.

6. The workshop dust removal device according to claim 5, characterized in that: The downward inclination angle of the guide cone near the first pipe is 30-45 degrees, the downward inclination angle of the guide cone near the second pipe is 60-75 degrees, and the downward inclination angle of the guide cone near the second pipe is 15-30 degrees.

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