Integrated dust and smoke removal device for powder coating production

Abstract

The utility model provides a kind of integrated dust and smoke removal device for powder coating production, including suction pipe, corrugated connecting pipe, horn-like suction port, one vertical main tower body;The suction pipe is installed on workshop top plate, and corrugated connecting pipe is evenly connected in suction pipe side wall, the horn-like suction port is connected in corrugated connecting pipe end, is located in the position of extruder smoke and the position of mixer dust leakage;The suction pipe end is connected in main tower body side wall, the inside of the main tower body is separated by internal structure and forms cyclone pre-separation cavity, filter cartridge fine filtration cavity and purification exhaust cavity from bottom to top in turn communication;The side wall of cyclone pre-separation cavity is equipped with tangential air inlet, the utility model is by in workshop key dust production, smoke point (such as extruder, mixer) setting by suction pipe, corrugated connecting pipe and horn-like suction port are composed of flexible capture network, can realize the source accurate capture of pollutant, prevent its diffusion in workshop.

Description

Technical Field

[0001] This utility model relates to the field of powder coating production technology, specifically to an integrated dust and smoke removal device for powder coating production. Background Technology

[0002] Powder coatings, as an environmentally friendly and energy-efficient surface treatment material, are increasingly widely used. Their production process mainly includes batching, premixing, melt extrusion, tableting and cooling, coarse crushing, and fine grinding and grading. In these processes, especially the feeding, mixing, crushing, and screening stages, a large amount of dust is generated; while in the melt extrusion and tableting and cooling stages, fumes mainly composed of oil fumes and volatile organic compounds (VOCs) are produced.

[0003] Currently, powder coating production workshops generally use centralized dust removal systems or individual dust collectors to treat the aforementioned pollutants. However, these systems have low treatment efficiency and poor effectiveness. The gases emitted into the atmosphere also contain a large amount of harmful components. Furthermore, the dust collection positions of current dust collectors are fixed and cannot be adjusted according to the location of the smoke and dust discharge, resulting in poor dust removal performance. Utility Model Content

[0004] In order to overcome the problems existing in the background technology, this utility model provides an integrated dust and smoke removal device for powder coating production, so as to solve the technical problems mentioned in the background technology that the existing dust and smoke removal equipment has low processing efficiency, poor effect, and the gas emitted into the atmosphere contains a large number of harmful components. In addition, the dust collection position of the current dust removal equipment is fixed and cannot be adjusted according to the smoke and dust discharge position, resulting in poor dust removal effect.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: An integrated dust and smoke removal device for powder coating production includes an suction pipe, a corrugated connecting pipe, a funnel-shaped suction inlet, and a vertical main tower. The suction pipe is installed on the ceiling of the production workshop, and the corrugated connecting pipe is evenly connected to the side wall of the suction pipe. The funnel-shaped suction inlet is connected to the end of the corrugated connecting pipe, located at the exhaust position of the extruder and the dust leakage position of the mixer. The end of the suction pipe is connected to the side wall of the main tower. The main tower is divided by an internal structure into a cyclone pre-separation chamber, a filter cartridge fine filtration chamber, and a purified exhaust chamber, which are connected sequentially from bottom to top. A tangential air inlet is provided on the side wall of the cyclone pre-separation chamber. The inlet pipe is connected to the tangential air inlet, with a first dust collection hopper at the bottom and a central exhaust pipe at the top. The outlet of the central exhaust pipe extends into the fine filtration chamber of the filter cartridge. A perforated plate is installed inside the fine filtration chamber, and multiple high-efficiency filter cartridges are vertically installed on the bottom of the perforated plate, dividing the fine filtration chamber into an upper clean air chamber and a lower dust chamber. The dust chamber is connected to the central exhaust pipe. The clean air chamber is connected to the purified exhaust chamber. The high-efficiency filter cartridges are located in the dust chamber, and their upper ends are connected to the clean air chamber. A smoke removal module is installed inside the purified exhaust chamber, and an induced draft fan and an exhaust port are connected to the top of the purified exhaust chamber.

[0006] Preferably, the corrugated connector is a flexible metal corrugated pipe.

[0007] Preferably, a pulse jet cleaning system is provided on the outside of the fine filtration chamber of the filter cartridge. The jet pipe of the pulse jet cleaning system extends into the clean air chamber and is connected to an air storage tank containing compressed air installed on the top of the main tower. Multiple pulse valves are evenly arranged on the jet pipe, and the multiple pulse valves are respectively located above multiple high-efficiency filter cartridges and aligned with the upper port of the high-efficiency filter cartridges.

[0008] Preferably, the side wall of the high-efficiency filter cartridge is evenly provided with air vents, and a filter bag is fitted and fixed on the high-efficiency filter cartridge. The upper end of the filter bag is fixed to the side wall of the high-efficiency filter cartridge by an arc-shaped pressure plate. The arc-shaped pressure plate presses on the filter bag and is fixed to the side wall of the high-efficiency filter cartridge by locking bolts, thus fixing the filter bag on the high-efficiency filter cartridge. Two arc-shaped pressure plates are symmetrically arranged and fixed to the side wall of the high-efficiency filter cartridge.

[0009] Preferably, the smoke removal module is an activated carbon adsorption module, which is horizontally inserted into the purified exhaust chamber using a drawer-type structure; the smoke removal module is provided with two horizontally arranged metal mesh plates, and granular activated carbon is filled between the two metal mesh plates.

[0010] Preferably, in the dust chamber, the upper outlet of the central exhaust pipe is provided with a conical guide hood, and the side wall of the guide hood is evenly provided with a plurality of guide holes facing the four directions.

[0011] Preferably, the dust chamber is equipped with a rotating seat that is fitted onto the central exhaust pipe and can rotate along the central exhaust pipe. The side of the rotating seat is a conical inclined surface, which facilitates the accumulation of falling dust at the outer edge of the dust chamber. The side wall of the dust chamber is provided with a dust discharge window, and a dust discharge channel is connected to the outside of the dust discharge window. Multiple isolation plates are arranged circumferentially on the inclined surface of the rotating seat. By pushing the isolation plates through the dust discharge window, the rotating seat is rotated, and the dust on the rotating seat is discharged to the outside through the dust discharge window and the dust discharge channel. The dust removal window is provided with a plate to open or close.

[0012] Preferably, the bottom of the first ash hopper is provided with an ash discharge valve.

[0013] The beneficial effects of this utility model are: 1. Integrated Source Capture and Global Purification: By installing a flexible capture network consisting of suction pipes, corrugated connecting pipes, and trumpet-shaped suction ports at key dust and smoke generation points in the production workshop (such as extruders and mixers), precise source capture of pollutants can be achieved, preventing their spread within the workshop. This capture system is seamlessly connected to the highly integrated purification tower at the back end, forming a complete and efficient solution from capture to purification, greatly improving the workshop working environment.

[0014] 2. Compact and Efficient Three-Stage Purification Process: The innovative design integrates three purification units—cyclone pre-separation, cartridge filtration, and activated carbon fume removal—into a single vertical main tower. This structure fully utilizes gravity and airflow dynamics, resulting in a smooth process, compact structure, and small footprint. Dust-laden flue gas undergoes three stages of treatment, simultaneously and efficiently removing coarse dust, fine dust, oil fumes, and VOCs, achieving synergistic treatment of complex pollutants generated during powder coating production.

[0015] 3. Significantly Improved Maintenance Convenience and Reliability: The filter bags are fixed to the high-efficiency filter cartridges via arc-shaped pressure plates and locking bolts, enabling quick installation and removal of the filter bags and reliable sealing. This simplifies the replacement process and reduces maintenance costs. The activated carbon smoke removal module adopts a drawer-type structure, allowing for easy pushing and pulling out like a drawer, making the addition and replacement of activated carbon extremely convenient and requiring no complicated tools. The unique rotatable rotating seat and ash discharge channel design in the dust chamber provide a mechanical auxiliary dust removal method, effectively removing dust that settles at the bottom of the dust chamber after filter cartridge cleaning, preventing dust accumulation in dead corners, and ensuring long-term stable operation of the equipment.

[0016] 4. Optimized Purification Efficiency and Dust Removal Effect: The conical hood and guide holes at the central exhaust pipe outlet buffer and evenly distribute the airflow as it enters the dust chamber, preventing high-speed airflow from directly impacting local filter cartridges. This balances the filtration load on each cartridge and extends the overall service life. The pulse jet cleaning system directly targets the upper port of the filter cartridge, providing efficient and thorough cleaning power and ensuring continuous low-resistance operation of the filtration system. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the installation structure of the suction tube and the trumpet-shaped suction port.

[0019] Figure 3 This is a schematic diagram of the external structure of the main tower.

[0020] Figure 4 This is a schematic cross-sectional view of the main tower body.

[0021] Figure 5 This is a partial schematic diagram of the cross-sectional structure of the main tower.

[0022] Figure 6 This is a schematic diagram of the structure of the high-efficiency filter cartridge.

[0023] Figure 7 This is a structural schematic diagram of the smoke removal module.

[0024] Figure 8 This is a schematic diagram of the structure of the ash removal window. Detailed Implementation

[0025] To make the objectives, technical solutions, and beneficial effects of this utility model clearer, the preferred embodiments of this utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of those skilled in the art.

[0026] like Figure 1-8 As shown, an integrated dust and smoke removal device for powder coating production, in actual installation, firstly, a suction pipe 1 is laid below the ceiling of the production workshop. Above the equipment that needs to capture pollutants, such as the exhaust port of the extruder and the feed port of the mixer, a bell-shaped suction port 3 is connected to the main suction pipe 1 through a corrugated connecting pipe 2 (preferably a flexible metal corrugated pipe, which is convenient for adjusting the position and angle), ensuring that the suction port is directly facing and close to the pollution source.

[0027] The end of the main suction pipe 1 is connected to the tangential air inlet 51 on the side wall of the vertical main tower 4. The interior of the main tower 4 forms a complete purification path: The workflow is as follows: The mixed gas containing dust and fumes is captured by the funnel-shaped suction port 3 under the negative pressure of the induced draft fan 9, and enters the cyclone pre-separation chamber 5 at the bottom of the main tower body 4 tangentially through the pipeline system. Inside the cyclone pre-separation chamber 5, the airflow rotates at high speed, and most of the heavier dust particles are thrown against the chamber wall under centrifugal force and fall into the first ash collection hopper 52 at the bottom, and are periodically discharged by the ash discharge valve 12. The preliminarily purified gas then rises through the central exhaust pipe 53 at the top.

[0028] After the gas is discharged from the central exhaust pipe 53, it first passes through the conical guide hood 531, whose sidewall guide holes 532 buffer the airflow and evenly diffuse it into the dust chamber 64 of the filter cartridge fine filtration chamber 6. The gas then passes from the outside to the inside through the filter bag 621 that surrounds the high-efficiency filter cartridge 62, where more than 99% of the fine dust is trapped on the outer surface of the filter bag 621. The clean gas enters the interior of the high-efficiency filter cartridge 62 and rises to the clean air chamber 63.

[0029] When the system operating resistance increases to a set value, the pulse jet cleaning system 11 is activated. Compressed air is supplied by the air tank 112 installed at the top of the main tower 4. The pulse valve 113 opens instantaneously, and the compressed air is injected into the clean air chamber 63 through the jet pipe 111, then blown in the opposite direction into the interior of the high-efficiency filter cartridge 62, shaking off the dust cake layer adhering to the outer surface of the filter bag 621. Most of the shaken-off dust falls to the bottom of the dust chamber 64 below.

[0030] Dust accumulated at the bottom of the dust chamber 64 can be removed through its unique internal cleaning mechanism: the operator can open the insert plate 645 on the ash discharge window 642 on the side wall of the dust chamber 64 and push the isolation plate 644 on the rotating seat 641 from the outside, causing the rotating seat 641 to rotate around the central exhaust pipe 53. During rotation, the dust on the conical inclined surface of the rotating seat 641 is scraped by the isolation plate 644 and discharged outside the tower through the ash discharge window 642 and the ash discharge channel 643. This design effectively solves the problem of difficult cleaning of dust accumulation inside the dust chamber of traditional dust collectors.

[0031] The gas, after being finely filtered by the filter cartridge, has had most of the dust removed, but still contains oil fumes and organic matter. The gas continues to rise into the purified exhaust chamber 7 and passes through the smoke removal module 8. This module has a drawer-type structure, filled with granular activated carbon 82, and held and fixed by two metal mesh plates 81. The oil fumes and VOCs in the gas are efficiently adsorbed as they pass through the activated carbon 82 layer. Finally, the thoroughly purified clean gas is discharged through the exhaust port 10 by the top exhaust fan 9, meeting emission standards.

[0032] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. An integrated dust and smoke removal device for powder coating production, characterized in that, include: The structure consists of an aspiration pipe (1), a corrugated connecting pipe (2), a flared aspiration port (3), and a vertical main tower body (4). The aspiration pipe (1) is installed on the ceiling of the production workshop. The corrugated connecting pipe (2) is evenly connected to the side wall of the aspiration pipe (1). The flared aspiration port (3) is connected to the end of the corrugated connecting pipe (2) and is located at the exhaust position of the extruder and the dust leakage position of the mixer. The end of the aspiration pipe (1) is connected to the side wall of the main tower body (4). The main tower body (4) is divided by an internal structure to form a cyclone pre-separation chamber (5), a filter cartridge fine filtration chamber (6), and a purified exhaust chamber (7) connected sequentially from bottom to top. A tangential air inlet (51) is provided on the side wall of the cyclone pre-separation chamber (5). The aspiration pipe (1) is connected to the tangential air inlet (51). A first ash collection hopper (5) is provided at the bottom. 2) A central exhaust pipe (53) is provided at the top, and the outlet of the central exhaust pipe (53) extends into the filter cartridge fine filtration chamber (6); a tube sheet (61) is provided in the filter cartridge fine filtration chamber (6), and multiple high-efficiency filter cartridges (62) are vertically installed on the tube sheet (61), dividing the filter cartridge fine filtration chamber (6) into an upper clean air chamber (63) and a lower dust chamber (64); the dust chamber (64) is connected to the central exhaust pipe (53); the clean air chamber (63) is connected to the purified exhaust chamber (7); the high-efficiency filter cartridge (62) is located in the dust chamber (64), and the upper end of the high-efficiency filter cartridge (62) is connected to the clean air chamber (63); a smoke removal module (8) is provided in the purified exhaust chamber (7), and an induced draft fan (9) and an exhaust port (10) are connected to the top of the purified exhaust chamber (7).

2. The integrated dust and smoke removal device for powder coating production according to claim 1, characterized in that: The corrugated connector (2) uses a flexible metal corrugated pipe.

3. The integrated dust and smoke removal device for powder coating production according to claim 1, characterized in that: A pulse jet cleaning system (11) is provided on the outside of the fine filtration chamber (6) of the filter cartridge. The jet pipe (111) of the pulse jet cleaning system (11) extends into the clean air chamber (63). The jet pipe (111) is connected to the air storage tank (112) containing compressed air installed on the top of the main tower body (4). Multiple pulse valves (113) are evenly arranged on the jet pipe (111). The multiple pulse valves (113) are located above the multiple high-efficiency filter cartridges (62) and aligned with the upper port of the high-efficiency filter cartridges (62).

4. An integrated dust and smoke removal device for powder coating production according to claim 1 or 3, characterized in that: The high-efficiency filter cartridge (62) has uniformly opened air holes on its side wall. A filter bag (621) is fitted and fixed on the high-efficiency filter cartridge (62). The upper end of the filter bag (621) is fixed to the side wall of the high-efficiency filter cartridge (62) by an arc-shaped pressure plate (622). The arc-shaped pressure plate (622) presses on the filter bag (621) and is fixed to the side wall of the high-efficiency filter cartridge (622) by locking bolts (623). The filter bag (621) is fixedly installed on the high-efficiency filter cartridge (62). Two arc-shaped pressure plates (622) are symmetrically arranged and fixed to the side wall of the high-efficiency filter cartridge (62).

5. An integrated dust and smoke removal device for powder coating production according to claim 1, characterized in that: The smoke removal module (8) is an activated carbon adsorption module, which is horizontally inserted into the purified exhaust chamber (7) with a drawer-type structure; the smoke removal module (8) is provided with two horizontally arranged metal mesh plates (81), and granular activated carbon (82) is filled between the two metal mesh plates (81).

6. An integrated dust and smoke removal device for powder coating production according to claim 1, characterized in that: Inside the dust chamber (64), a conical hood (531) is provided at the upper outlet of the central exhaust pipe (53), and a plurality of guide holes (532) facing the surrounding area are evenly opened on the side wall of the hood (531).

7. An integrated dust and smoke removal device for powder coating production according to claim 1 or 6, characterized in that: The dust chamber (64) is equipped with a rotating seat (641) that is sleeved on the central exhaust pipe (53) and can rotate along the central exhaust pipe (53). The side of the rotating seat (641) is a conical inclined surface. The side wall of the dust chamber (64) is provided with a dust discharge window (642). A dust discharge channel (643) is connected to the outside of the dust discharge window (642). Multiple isolation plates (644) are arranged circumferentially on the inclined surface of the rotating seat (641). The dust discharge window (642) is provided with a plug plate (645) for opening or closing.

8. An integrated dust and smoke removal device for powder coating production according to claim 1, characterized in that: The bottom of the first ash hopper (52) is provided with an ash discharge valve (12).

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