Semi-closed dust production working area dust removal device based on air curtain dust blocking

Abstract

The invention discloses a semi-closed dust production working area dust removal device based on air curtain dust blocking, relates to the technical field of industrial dust removal, and provides the following scheme that the semi-closed dust production working area dust removal device comprises a semi-closed dust production working area, a dust suction opening is formed in the upper end of the semi-closed dust production working area, and a dust suction mechanism is connected to the upper end of the dust suction opening; an outlet is formed in one side of the semi-closed dust production working area, an air curtain retaining wall is arranged at the top end of the outlet, an air conveying pipeline is fixed to the inner wall of the air curtain retaining wall, air spraying heads are fixed to the air conveying pipeline at equal intervals, and the air outlet ends of the air spraying heads are connected with nozzles. The other end of the gas conveying pipeline extends to the outside of the semi-closed dust production working area and is connected to the air outlet end of the air compressor, and a dust detection mechanism is fixed to the outer wall of the air curtain retaining wall. In the invention, the air volume of the dust remover can be dynamically regulated and controlled according to the concentration of the overflow dust volume, so that the dust removal efficiency is improved, the energy consumption is reduced, the production cost is reduced and the service life of the dust remover is prolonged on the premise of effectively controlling dust overflow.

Description

Technical Field

[0001] The invention relates to the technical field of industrial dust removal, and in particular to a dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking. Background Art

[0002] With the continuous improvement of environmental protection requirements, production processes with large dust production, such as casting (smelting, pouring, sand dropping, sand regeneration, shot blasting, sand blasting, shot blasting, etc.), welding, cleaning, etc., are facing huge pressure for air pollution control. The characteristic of this part of the production process is that the working area is mostly a semi-enclosed working area with a single opening (hereinafter referred to as a semi-enclosed dust-producing working area). The semi-enclosed dust-producing working area is generally equipped with a roof, and three of the four facades are closed walls to prevent dust from overflowing. One opening is left to connect with the area outside the working area to facilitate the transportation of workpieces in and out of the working area and to prevent the work area from generating a large negative pressure due to the dust removal system and affecting the health of the workers.

[0003] The prior art dust removal method for semi-enclosed dust-producing working areas is as follows: a raised dust hood is arranged at the top of the working area close to the opening, openings are arranged on the top and side of the dust hood to be connected to the dust removal pipeline, and the other side of the dust removal pipeline is connected to the dust collector. The dust collector uses a fan and a dust removal pipeline to generate negative pressure in the dust hood, causing the working dust to move into the dust hood under the action of the pressure difference, and a filtering system is arranged in the dust collector to filter out the inhaled dust, thereby achieving dust removal.

[0004] The main problems of the prior art are:

[0005] 1. Poor dust removal effect: In order to facilitate the transportation of workpieces, mechanical retaining walls cannot be set at the openings of semi-enclosed dust-producing work areas. When the amount of dust generated is large, the dust will seriously overflow through the openings due to insufficient negative pressure and flow of the dust removal system, polluting the working environment.

[0006] 2. High energy consumption of dust removal system: Taking the casting sand removal work area of ​​a factory in northern my country as an example, its dust removal system uses two sets of 60KW fans, and both sets of fans are fully started during operation. However, in actual production, affected by production processes and production plans, the dust production in the work area is not constant, resulting in a large waste of energy when the dust production is small.

[0007] Therefore, a dust removal device for a semi-enclosed dust-generating working area based on air curtain dust blocking is provided. Summary of the invention

[0008] In view of the shortcomings of the prior art, the present invention provides a dust removal device for a semi-enclosed dust-producing work area based on air curtain dust blocking, which can dynamically adjust the air volume of the dust collector according to the concentration of the overflowing dust, thereby improving the dust removal efficiency while effectively controlling the dust overflow, reducing energy consumption, reducing production costs, and increasing the service life of the dust collector, thereby overcoming the shortcomings of the prior art.

[0009] In order to achieve the above object, the present invention adopts the following technical solutions:

[0010] A dust removal device for a semi-enclosed dust-producing work area based on air curtain dust blocking, comprising a semi-enclosed dust-producing work area, a dust suction port is arranged at the upper end of the semi-enclosed dust-producing work area, the upper end of the dust suction port is connected to a dust suction mechanism, an outlet is arranged on one side of the semi-enclosed dust-producing work area, a wind curtain retaining wall is arranged at the top of the outlet, an air pipeline is fixed to the inner wall of the wind curtain retaining wall, nozzles are fixed at equal distances on the air pipeline, the air outlet end of the nozzle is connected to a nozzle, one end of the air pipeline extends to the outside of the semi-enclosed dust-producing work area and is connected to the air outlet end of an air compressor, a dust detection mechanism is fixed to the outer wall of the wind curtain retaining wall, and a controller is fixed to the outer wall of one side of the semi-enclosed dust-producing work area.

[0011] As a further solution of the present invention: the dust suction mechanism includes a dust collecting hood fixed to the upper end of the dust suction port, the upper end of the dust collecting hood is connected to a dust collecting pipe, and one end of the dust collecting pipe is externally connected to the dust collector body.

[0012] As a further solution of the present invention: the dust detection mechanism includes a dust concentration detection sensor fixed to the outer wall of the wind curtain baffle wall, and the outer cover of the dust concentration detection sensor is provided with a protective cover.

[0013] As a further solution of the present invention: the detection head of the dust concentration detection sensor extends to the outside of the protective cover.

[0014] As a further solution of the present invention: a fixing seat is installed on the outer wall of the wind curtain baffle and located below the dust concentration detection sensor, an electric push rod is fixed on one side of the fixing seat, one end of the electric push rod is connected to a cleaning plate, and a sponge block is fixed on one side of the cleaning plate.

[0015] As a further solution of the present invention: a water tank is fixed on one side of the upper end of the semi-enclosed dust-producing working area, a water pump is fixed on the outer wall of the water tank, the water pumping end of the water pump is connected to a water pumping pipe, one end of the water pumping pipe is connected to the bottom of the water tank, the water outlet end of the water pump is connected to a water outlet pipe, one end of the water outlet pipe is connected to a water spray head, and the water spray head is located on one side of the detection head of the dust concentration detection sensor.

[0016] As a further solution of the present invention: a flow regulating valve is installed on the gas transmission pipeline, and the flow regulating valve, the dust collector body and the dust concentration detection sensor are all electrically connected to the controller.

[0017] As a further solution of the present invention: a display screen and control buttons are integrated on the controller.

[0018] As a further solution of the present invention: a wind shield is arranged on the outer wall of the semi-enclosed dust-generating working area and at the bottom end of the outlet, and an arc-shaped guide portion is arranged on the top of the wind shield facing the semi-enclosed dust-generating working area.

[0019] As a further solution of the present invention: connecting ear plates are provided at both ends of the windshield strip.

[0020] The beneficial effects of the present invention are:

[0021] 1. The air volume of the dust collector can be dynamically adjusted according to the concentration of the spilled dust, so as to improve the dust removal efficiency while effectively controlling the spilled dust, reduce energy consumption, reduce production costs, and increase the service life of the dust collector.

[0022] 2. Through the unique wind curtain retaining wall technology, on the one hand, it solves the practical problem of not being able to set up a mechanical retaining wall, and prevents dust from overflowing without affecting the production rhythm. In addition, the wind curtain retaining wall generates a jet flow field below the working area, which increases the positive pressure below the dust-generating working area, which is conducive to increasing the pressure difference between the dust-generating point and the dust hood, further promoting the movement of dust to the dust hood, and ultimately helps to improve the dust removal efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the first-perspective stereoscopic structure of a dust removal device for a semi-enclosed dust-generating working area based on air curtain dust blocking proposed by the present invention.

[0024] Figure 2 This is a schematic diagram of the stereoscopic structure from a second perspective of a dust removal device for a semi-enclosed dust-generating working area based on air curtain dust blocking proposed by the present invention.

[0025] Figure 3 This is a schematic diagram of the third-perspective stereoscopic structure of a dust removal device for a semi-enclosed dust-generating working area based on air curtain dust blocking proposed by the present invention.

[0026] Figure 4 This is a schematic diagram of the third perspective structure of a dust removal device for a semi-enclosed dust-generating working area based on air curtain dust blocking proposed by the present invention.

[0027] Figure 5 A schematic diagram of the wind shield structure of a dust removal device for a semi-enclosed dust-generating working area based on air curtain dust blocking proposed by the present invention.

[0028] Figure 6 This is a schematic diagram of the partial structure of a dust removal device for a semi-enclosed dust-generating working area based on air curtain dust blocking proposed by the present invention.

[0029] Figure 7 The present invention proposes a semi-enclosed dust-generating work area dust removal device based on air curtain dust blocking Figure 1 Enlarged structural diagram at A in the middle.

[0030] Figure 8 The present invention proposes a semi-enclosed dust-generating work area dust removal device based on air curtain dust blocking Figure 4 Enlarged structural diagram at B in the middle.

[0031] In the figure: 1. Semi-enclosed dust-producing work area; 2. Air compressor; 3. Air pipeline; 4. Wind shield; 5. Fixed seat; 6. Electric push rod; 7. Cleaning plate; 8. Wind curtain retaining wall; 9. Exit; 10. Dust hood; 11. Dust collection pipeline; 12. Dust collector body; 13. Flow regulating valve; 14. Water outlet pipe; 15. Water tank; 16. Protective cover; 17. Dust concentration detection sensor; 18. Water spray head; 19. Controller; 20. Arc-shaped guide part; 21. Sponge block; 22. Water pump; 23. Water suction pipe; 24. Jet head; 25. Nozzle; 26. Dust suction port; 27. Connecting ear plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] Example 1, reference Figure 1-4 A dust removal device for a semi-enclosed dust-producing work area based on air curtain dust blocking includes a semi-enclosed dust-producing work area 1, characterized in that a dust suction port 26 is provided at the upper end of the semi-enclosed dust-producing work area 1, and a dust suction mechanism is connected to the upper end of the dust suction port 26; an outlet 9 is provided on one side of the semi-enclosed dust-producing work area 1, and a wind curtain retaining wall 8 is provided on the top of the outlet 9; an air pipeline 3 is fixed to the inner wall of the wind curtain retaining wall 8, and nozzles 24 are fixed at equal distances on the air pipeline 3, and a nozzle 25 is connected to the air outlet end of the nozzle 24, one end of the air pipeline 3 extends to the outside of the semi-enclosed dust-producing work area 1 and is connected to the air outlet end of the air compressor 2, a dust detection mechanism is fixed to the outer wall of the wind curtain retaining wall 8, and a controller 19 is fixed to the outer wall of one side of the semi-enclosed dust-producing work area 1.

[0034] The dust collecting mechanism includes a dust collecting hood 10 fixed to the upper end of the dust collecting port 26 , the upper end of the dust collecting hood 10 is connected to a dust collecting pipe 11 , and one end of the dust collecting pipe 11 is externally connected to the dust collector body 12 .

[0035] The dust detection mechanism includes a dust concentration detection sensor 17 fixed to the outer wall of the wind curtain baffle 8 . The outer cover of the dust concentration detection sensor 17 is provided with a protective cover 16 . The detection head of the dust concentration detection sensor 17 extends to the outside of the protective cover 16 .

[0036] A fixing seat 5 is installed on the outer wall of the wind curtain baffle 8 and below the dust concentration detection sensor 17. An electric push rod 6 is fixed to one side of the fixing seat 5. One end of the electric push rod 6 is connected to a cleaning plate 7. A sponge block 21 is fixed to one side of the cleaning plate 7.

[0037] A water tank 15 is fixed to one side of the upper end of the semi-enclosed dust-producing working area 1, and a water pump 22 is fixed to the outer wall of the water tank 15. The water pumping end of the water pump 22 is connected to a water pumping pipe 23, one end of the water pumping pipe 23 is connected to the bottom of the water tank 15, and the water outlet end of the water pump 22 is connected to a water outlet pipe 14, one end of the water outlet pipe 14 is connected to a water spray head 18, and the water spray head 18 is located on the detection head side of the dust concentration detection sensor 17.

[0038] The water pump 22 and the electric push rod 6 are turned on regularly to make the water spray head 18 spray water to the detection head of the dust concentration detection sensor 17. The cleaning plate 7 is driven back and forth by the extension and retraction of the electric push rod 6 to make the sponge block 21 rinse and wipe the detection head of the dust concentration detection sensor 17 to ensure that the detection head of the dust concentration detection sensor 17 is clean and avoid inaccurate detection data.

[0039] A flow regulating valve 13 is installed on the gas transmission pipeline 3. The flow regulating valve 13, the dust collector body 12 and the dust concentration detection sensor 17 are all electrically connected to the controller 19. The controller 19 is integrated with a display screen and control buttons.

[0040] A high-speed airflow is blown toward the outlet 9 through the nozzle 24, thereby forming a layer of wind curtain at the outlet. At the same time, the dust concentration detection sensor 17 is used to detect whether there is any dust overflowing at the outlet 9, and the controller 19 receives the signal from the dust concentration detection sensor 17, and realizes the frequency conversion control of the dust collector body 12 and the adjustment of the flow control valve 13 according to the signal. When there is no dust overflow, the dust collector body 12 is automatically activated or the real-time air volume of the dust collector body 12 is reduced and the flow regulation of the flow control valve 13 is reduced. When the dust detection device 5 detects dust overflow, the dust collector body 12 is automatically started or the real-time air volume of the dust collector 2 is increased and the flow regulation of the flow control valve 13 is increased, so as to save energy without dust overflowing.

[0041] Embodiment 2: This embodiment is optimized on the basis of embodiment 1, specifically:

[0042] A windshield strip 4 is provided on the outer wall of the semi-enclosed dust-generating working area 1 and at the bottom end of the outlet 9. An arc-shaped guide portion 20 is provided on the top of the windshield strip 4 on one side facing the semi-enclosed dust-generating working area 1. Connecting ear plates 27 are provided at both ends of the windshield strip 4.

[0043] Through the guiding effect of the arc-shaped guide part 20 of the wind shield strip 4 on the wind curtain, the path of the wind curtain can be guided to the interior of the semi-enclosed dust-producing working area 1 so that the dust can enter the dust collecting hood 10, thereby preventing the wind curtain from blowing to the outside of the semi-enclosed dust-producing working area 1 and bringing out the dust to a large extent.

[0044] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking, comprising a semi-enclosed dust-generating work area (1), characterized in that: A dust suction port (26) is provided at the upper end of the semi-enclosed dust-generating work area (1), and a dust suction mechanism is connected to the upper end of the dust suction port (26). An outlet (9) is provided on one side of the semi-enclosed dust-generating work area (1), and a wind curtain retaining wall (8) is provided at the top of the outlet (9). An air supply pipeline (3) is fixed to the inner wall of the wind curtain retaining wall (8), and nozzles (24) are fixed at equal distances on the air supply pipeline (3), and the air outlet end of the nozzles (24) is connected to a nozzle (25). One end of the air supply pipeline (3) extends to the outside of the semi-enclosed dust-generating work area (1) and is connected to the air outlet end of the air compressor (2). A dust detection mechanism (A) is fixed to the outer wall of the wind curtain retaining wall (8), and a controller (19) is fixed to the outer wall of one side of the semi-enclosed dust-generating work area (1).

2. According to claim 1, a dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking is characterized in that: The dust collection mechanism comprises a dust collecting hood (10) fixed at the upper end of the dust collection port (26); the upper end of the dust collecting hood (10) is connected to a dust collecting pipe (11); one end of the dust collecting pipe (11) is externally connected to a dust collector body (12).

3. The dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 2 is characterized in that: The dust detection mechanism comprises a dust concentration detection sensor (17) fixed to the outer wall of the wind curtain baffle wall (8), and the outer cover of the dust concentration detection sensor (17) is provided with a protective cover (16).

4. The dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 3 is characterized in that: The detection head of the dust concentration detection sensor (17) extends to the outside of the protective cover (16).

5. The dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 4 is characterized in that: A fixing seat (5) is installed on the outer wall of the wind curtain baffle wall (8) and located below the dust concentration detection sensor (17). An electric push rod (6) is fixed to one side of the fixing seat (5). One end of the electric push rod (6) is connected to a cleaning plate (7). A sponge block (21) is fixed to one side of the cleaning plate (7).

6. The dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 3 is characterized in that: A water tank (15) is fixed to one side of the upper end of the semi-enclosed dust-generating working area (1), a water pump (22) is fixed to the outer wall of the water tank (15), a water pump end of the water pump (22) is connected to a water pump pipe (23), one end of the water pump pipe (23) is connected to the bottom of the water tank (15), a water outlet end of the water pump (22) is connected to a water outlet pipe (14), one end of the water outlet pipe (14) is connected to a water spray head (18), and the water spray head (18) is located on one side of the detection head of the dust concentration detection sensor (17).

7. The dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 3 is characterized in that: A flow regulating valve (13) is installed on the gas transmission pipeline (3); the flow regulating valve (13), the dust collector body (12) and the dust concentration detection sensor (17) are all electrically connected to the controller (19).

8. The dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 7 is characterized in that: The controller (19) is integrally mounted with a display screen and control buttons.

9. The dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 1 is characterized in that: A windshield strip (4) is provided on the outer wall of the semi-enclosed dust-generating working area (1) and at the bottom end of the outlet (9), and an arc-shaped guide portion (20) is provided on the top of the windshield strip (4) on one side facing the semi-enclosed dust-generating working area (1).

10. A dust removal device for a semi-enclosed dust-generating work area based on air curtain dust blocking according to claim 9, characterized in that: Both ends of the windshield strip (4) are provided with connecting ear plates (27).

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