Negative pressure air inducing assembly applied to VOC waste gas treatment process

Abstract

The utility model discloses a negative pressure air inducing assembly applied to VOC waste gas treatment process, and relates to the technical field of negative pressure air inducing assemblies, the negative pressure air inducing assembly comprises an air inducing assembly body, a filter plate, a filter box and an exhaust pipe, the filter plate is installed on the front side of the air inducing assembly body, the air inducing assembly body is communicated with the filter box through a pipeline, and the exhaust pipe is communicated with the filter box through a pipeline. The top of the filter box communicates with one end of an exhaust pipe, and a scraping cleaning assembly is arranged on the front face of the filter plate. According to the utility model, the scraping cleaning assembly is matched with the timing collecting assembly to regularly clean and collect the front surface of the filter plate, so that the problem that the filter plate is easily blocked after being used for a certain time due to the lack of regular cleaning of impurities filtered by the filter plate in the existing air inducing assembly is solved; and as the air inducing assembly is often installed at the positions such as high altitude and narrow space, a user cannot clean the air inducing assembly frequently, and the air inducing efficiency of the air inducing assembly is influenced are solved, and the effect of cleaning the air inducing assembly regularly is achieved.

Description

Technical Field

[0001] This utility model relates to the technical field of negative pressure exhaust fan components, specifically a negative pressure exhaust fan component applied in VOC waste gas treatment processes. Background Technology

[0002] It is a core device that draws in and guides the flow of waste gas by creating a negative pressure environment. It mainly consists of a fan, motor, duct, valves, and control system. The negative pressure is created by the rotation of the fan impeller, which draws VOC waste gas from the pollution source (such as production equipment or reaction vessel) into the treatment system through the duct. After the air volume is regulated by the valve, it is transported to subsequent treatment units such as adsorption and combustion. This component can ensure efficient collection and stable transmission of waste gas and avoid fugitive emissions. Its control system can dynamically adjust the operating parameters according to the working conditions, providing power support for the continuity and efficiency of the entire treatment process. It is a key link connecting the pollution source and the treatment equipment in VOC waste gas treatment.

[0003] For example, a draft fan for treating waste gas from cyanuric acid production, disclosed in CN217367576U, mainly includes: a filter box fixing plate and a mounting plate. The draft fan body is installed at the bottom of the filter box, and a guide pipe is installed at the top of the filter box. A connecting plate is installed at the bottom of one side of the guide pipe, and a smoke exhaust pipe is installed on the other side of the filter box. This utility model features an operating platform installed at the top of the filter box. When the device is in use, the operator starts the draft fan body, which transmits external waste gas through the guide pipe and connecting plate. When the waste gas is transmitted to the inside of the filter box through the guide pipe, particles in the waste gas are filtered through the filter screen and adsorbed and retained on the surface of the filter screen. After filtration, the sliders installed on both sides of the filter plate can be moved by pulling the handle and fixing plate, allowing the filter screen to be removed for cleaning or replacement, thus improving the ease of use of the device.

[0004] Based on the search of patent numbers, and combined with the shortcomings of existing technologies, the following findings were made;

[0005] Existing air intake components lack regular cleaning of the filter plates to remove impurities, which makes the filter plates prone to clogging after a certain period of use. Since air intake components are often installed in locations such as high altitudes or narrow spaces, users cannot clean them frequently, thus affecting the air intake efficiency of the components. Utility Model Content

[0006] To address the problems mentioned in the background art, the purpose of this utility model is to provide a negative pressure exhaust fan assembly for VOC waste gas treatment processes. This assembly has the advantage of timed cleaning, solving the problem that existing exhaust fan assemblies lack timed cleaning of the filter plates to remove impurities. This leads to the filter plates becoming clogged after a certain period of use. Furthermore, since exhaust fan assemblies are often installed in locations such as high altitudes or narrow spaces, users cannot clean them frequently, affecting the exhaust efficiency of the exhaust fan assembly.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a negative pressure exhaust fan assembly applied in VOC waste gas treatment processes, comprising an exhaust fan assembly body, a filter plate, a filter box, and an exhaust pipe. The filter plate is installed on the front of the exhaust fan assembly body, and the exhaust fan assembly body is connected to the filter box via a pipe. The top of the filter box is connected to one end of the exhaust pipe. A scraping cleaning component is provided on the front of the filter plate, and a timed collection component is installed at the bottom of the exhaust fan assembly body.

[0008] As a preferred embodiment of this utility model, the scraping cleaning component includes a scraper, with connecting blocks installed on both sides of the back of the scraper, and a cylinder installed at the bottom of the connecting block. The cylinder is installed on the outside of the air intake component body, and the cylinder is electrically connected to a controller via a wire. The controller is installed on one side of the air intake component body.

[0009] As a preferred embodiment of this utility model, the timing collection component includes a time relay, which is electrically connected to the controller via a wire. A collection box is installed at the bottom of the air-expelling component body, a movable plate is provided at the top of the collection box, and an electric push rod is installed on the back of the movable plate. The electric push rod is installed at the bottom of the air-expelling component body.

[0010] As a preferred embodiment of this utility model, a groove is provided on the outer side of the movable plate, and a slider is installed on the top of the inner side of the collection box, with the surface of the slider located inside the groove.

[0011] As a preferred embodiment of this invention, a sealing plate is installed at the bottom of the movable plate, and a collection box is provided inside the collection box.

[0012] As a preferred embodiment of this utility model, the front of the collection box is provided with a movable groove, the collection box is located inside the movable groove, and a movable block is installed on the front of the collection box.

[0013] As a preferred embodiment of this invention, a protective box is installed at the bottom of the outer side of the air intake assembly body, and the cylinder is located inside the protective box.

[0014] As a preferred embodiment of this utility model, a positioning block is installed at the bottom of the connecting block, and a positioning groove is provided at the bottom of the outer side of the air-guiding component body, and the surface of the positioning block is movably connected to the inside of the positioning groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model solves the problem of existing air-driving components lacking timed cleaning of filter plates to remove impurities by setting up a scraping cleaning component in conjunction with a timed collection component to clean and collect the front of the filter plate at regular intervals. This causes the filter plates to become clogged after a certain period of use. Since air-driving components are often installed in places such as high altitudes or narrow spaces, users cannot clean them frequently, which affects the air-driving efficiency of the air-driving components. This invention achieves the effect of timed cleaning.

[0017] 2. By setting up a scraping cleaning component, this utility model can activate a cylinder during use, which drives the scraper to scrape the surface of the filter plate. This can promptly remove impurities attached to the filter plate, preventing impurities from accumulating for a long time and causing filter plate blockage. This ensures that exhaust gas can flow smoothly through the filter plate, improves the air intake efficiency of the air intake component, and reduces equipment maintenance costs and downtime caused by filter plate blockage.

[0018] 3. This utility model, by setting a timed collection component, allows the time relay to electrically push the rod according to the set time. The electric push rod can drive the movable plate to open, allowing the cleaned impurities to fall into the collection box, thus realizing the timed collection of impurities, preventing impurities from scattering around inside the equipment, keeping the internal environment of the equipment clean, and facilitating subsequent centralized processing of impurities. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the three-dimensional disassembled structure of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.

[0023] In the diagram: 1. Air intake assembly body; 2. Filter plate; 3. Filter box; 4. Exhaust pipe; 5. Scraping cleaning assembly; 51. Scraper; 52. Connecting block; 53. Cylinder; 54. Controller; 6. Timed collection assembly; 61. Time relay; 62. Collection box; 63. Movable plate; 64. Electric push rod; 7. Slide groove; 8. Sliding block; 9. Sealing plate; 10. Collection box; 11. Moving groove; 12. Moving block; 13. Protective box; 14. Positioning block; 15. Positioning groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1 to 4 As shown, the negative pressure exhaust fan assembly for VOC waste gas treatment provided by this utility model includes an exhaust fan assembly body 1, a filter plate 2, a filter box 3, and an exhaust pipe 4. The filter plate 2 is installed on the front of the exhaust fan assembly body 1. The exhaust fan assembly body 1 is connected to the filter box 3 through a pipe. The top of the filter box 3 is connected to one end of the exhaust pipe 4. A scraping cleaning component 5 is provided on the front of the filter plate 2. A timed collection component 6 is installed at the bottom of the exhaust fan assembly body 1.

[0026] refer to Figure 4 The scraping cleaning assembly 5 includes a scraper 51, with connecting blocks 52 installed on both sides of the back of the scraper 51. A cylinder 53 is installed at the bottom of the connecting block 52. The cylinder 53 is installed on the outside of the air intake assembly body 1. The cylinder 53 is electrically connected to a controller 54 via wires. The controller 54 is installed on one side of the air intake assembly body 1. The controller 54 is a Siemens S7-1200 PLC, and the cylinder 53 is an SMC CDQ2B20-30D double-acting cylinder.

[0027] As a technical optimization of this utility model, by setting up a scraping cleaning component 5, the cylinder 53 can be activated during use, so that the cylinder 53 drives the scraper 51 to scrape the surface of the filter plate 2, which can promptly clean the impurities attached to the filter plate 2, avoid the accumulation of impurities for a long time and cause the filter plate 2 to be blocked, ensure that the exhaust gas can flow smoothly through the filter plate 2, improve the air extraction efficiency of the air extraction component body 1, and reduce the equipment maintenance costs and downtime caused by the blockage of the filter plate 2.

[0028] refer to Figure 2The timed collection component 6 includes a time relay 61, which is electrically connected to the controller 54 via a wire. A collection box 62 is installed at the bottom of the air intake component body 1, and a movable plate 63 is provided on the top of the collection box 62. An electric push rod 64 is installed on the back of the movable plate 63. The electric push rod 64 is installed at the bottom of the air intake component body 1. The time relay 61 is an Omron H3CR-A8 time relay.

[0029] As a technical optimization of this utility model, by setting a timed collection component 6, the time relay 61 can drive the electric push rod 64 according to the set time. The start of the electric push rod 64 can drive the movable plate 63 to open, so that the cleaned impurities fall into the collection box 10, thereby realizing the timed collection of impurities, preventing impurities from scattering around inside the equipment, keeping the internal environment of the equipment clean, and facilitating the subsequent centralized processing of impurities.

[0030] refer to Figure 3 A groove 7 is provided on the outer side of the movable plate 63, and a slider 8 is installed on the top of the inner side of the collection box 62. The surface of the slider 8 is located inside the groove 7.

[0031] As a technical optimization of this utility model, by setting a sliding groove 7 and a slider 8, the slider 8 can limit the movement of the movable plate 63 on the outside through the sliding groove 7 during use. Under the action of the electric push rod 64, the movable plate 63 moves along the cooperation of the sliding groove 7 and the slider 8, making the opening and closing of the movable plate 63 smoother and more stable, avoiding jamming or deviation of the movable plate 63 during movement, ensuring the reliability of the impurity collection process, and extending the service life of the movable plate 63 and related components.

[0032] refer to Figure 2 A sealing plate 9 is installed at the bottom of the movable plate 63, and a collection box 10 is installed inside the collection box 62.

[0033] As a technical optimization of this utility model, by setting a sealing plate 9 and a collection box 10, the sealing plate 9 can effectively prevent impurities in the collection box 10 from leaking out, avoid impurities from being mixed back into the exhaust gas, ensure the sealing of the collected impurities, and improve the quality of exhaust gas treatment. The collection box 10 facilitates the centralized collection and storage of impurities, makes it easy to clean regularly, and reduces the risk of impurities contaminating other parts of the equipment.

[0034] refer to Figure 2 The collection box 62 has a moving groove 11 on the front, the collection box 10 is located inside the moving groove 11, and the moving block 12 is installed on the front of the collection box 10.

[0035] As a technical optimization of this utility model, by setting the moving slot 11 and the moving block 12, it is convenient to take out and install the collection box 10 from the collection box 62, which makes it easier for staff to clean the impurities in the collection box 10 and replace the collection box 10, thereby improving the convenience of cleaning impurities and reducing the difficulty and time cost of cleaning work.

[0036] refer to Figure 4 A protective box 13 is installed at the bottom of the outer side of the air intake assembly body 1, and the cylinder 53 is located inside the protective box 13.

[0037] As a technical optimization of this utility model, by setting up a protective box 13 and placing the cylinder 53 inside the protective box 13, the cylinder 53 can be effectively protected from the influence of the external environment, such as dust and water vapor, so as to avoid damage to the cylinder 53 due to external factors and extend the service life of the cylinder 53.

[0038] refer to Figure 4 A positioning block 14 is installed at the bottom of the connecting block 52, and a positioning groove 15 is provided at the bottom of the outer side of the air-expelling component body 1. The surface of the positioning block 14 is movably connected to the inside of the positioning groove 15.

[0039] As a technical optimization of this utility model, by setting a positioning block 14 and a positioning groove 15, the cooperation between the positioning block 14 and the positioning groove 15 can position and guide the movement of the connecting block 52 and the scraper 51, so that the scraper 51 moves more accurately and smoothly when cleaning the filter plate 2, ensuring that the scraper 51 and the filter plate 2 are in full contact, improving the cleaning effect, and at the same time preventing the scraper 51 from shaking during the movement, thus avoiding damage to the filter plate 2.

[0040] The working principle and usage process of this utility model are as follows: During use, the exhaust fan assembly 1 is activated to create a negative pressure environment, thereby drawing VOC waste gas containing impurities from the pollution source through the pipeline. The waste gas first passes through the filter plate 2, which filters and intercepts the impurities in the waste gas. The purified waste gas continues to enter the filter box 3 through the pipeline, and finally exits through the exhaust pipe 4 to enter the subsequent VOC waste gas treatment unit, such as an adsorption or combustion device, for further treatment. During use, the time relay 61 periodically sends a signal to the controller 54. After receiving and processing the signal, the controller 54 periodically starts the cylinder 53 and the electric push rod 64, and the cylinder 53 starts outputting... The controller 54 pushes the connecting block 52 to move, which in turn moves the scraper 51. The scraper 51 scrapes and cleans the front of the filter plate 2, causing impurities to be scraped off and fall off. At the same time, the electric push rod 64 is activated, which moves the movable plate 63. The movable plate 63 moves, allowing impurities to fall into the collection box 10. The controller 54 then closes the electric push rod 64, causing the output end of the electric push rod 64 to push the movable plate 63 to seal the top of the collection box 62, preventing impurities from being affected by the collected airflow and re-attaching to the filter plate 2. This achieves the effect of timed cleaning and improves the airflow efficiency of the airflow assembly.

[0041] In summary, this negative pressure exhaust fan assembly applied in VOC waste gas treatment processes solves the problem of existing exhaust fan assemblies lacking timed cleaning of filter plates to remove impurities. This is achieved by setting up a scraping cleaning component 5 in conjunction with a timed collection component 6 to regularly clean and collect the front of the filter plate 2. As this leads to the filter plates becoming clogged after a certain period of use, and because exhaust fan assemblies are often installed in locations such as high altitudes or narrow spaces, users cannot clean them frequently, thus affecting the exhaust efficiency of the exhaust fan assembly.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative pressure exhaust fan assembly used in VOC waste gas treatment processes, comprising an exhaust fan assembly body (1), a filter plate (2), a filter box (3), and an exhaust pipe (4), characterized in that: The filter plate (2) is installed on the front of the air intake assembly body (1). The air intake assembly body (1) is connected to the filter box (3) through a pipe. The top of the filter box (3) is connected to one end of the exhaust pipe (4). A scraping cleaning component (5) is provided on the front of the filter plate (2). A timed collection component (6) is installed at the bottom of the air intake assembly body (1).

2. The negative pressure exhaust fan assembly applied in VOC waste gas treatment process according to claim 1, characterized in that: The scraping cleaning assembly (5) includes a scraper (51), and connecting blocks (52) are installed on both sides of the back of the scraper (51). A cylinder (53) is installed at the bottom of the connecting block (52). The cylinder (53) is installed on the outside of the air intake assembly body (1). The cylinder (53) is electrically connected to a controller (54) through a wire. The controller (54) is installed on one side of the air intake assembly body (1).

3. The negative pressure exhaust fan assembly applied in VOC waste gas treatment process according to claim 2, characterized in that: The timed collection component (6) includes a time relay (61), which is electrically connected to the controller (54) via a wire. A collection box (62) is installed at the bottom of the air intake component body (1), and a movable plate (63) is provided on the top of the collection box (62). An electric push rod (64) is installed on the back of the movable plate (63), and the electric push rod (64) is installed at the bottom of the air intake component body (1).

4. The negative pressure exhaust fan assembly applied in VOC waste gas treatment process according to claim 3, characterized in that: The movable plate (63) has a groove (7) on its outer side, and a slider (8) is installed on the top of the inner side of the collection box (62). The surface of the slider (8) is located inside the groove (7).

5. The negative pressure exhaust fan assembly applied in VOC waste gas treatment process according to claim 3, characterized in that: A sealing plate (9) is installed at the bottom of the movable plate (63), and a collection box (10) is provided inside the collection box (62).

6. The negative pressure exhaust fan assembly applied in VOC waste gas treatment process according to claim 5, characterized in that: The collection box (62) has a moving groove (11) on its front side, the collection box (10) is located inside the moving groove (11), and a moving block (12) is installed on the front side of the collection box (10).

7. The negative pressure exhaust fan assembly applied in VOC waste gas treatment process according to claim 2, characterized in that: A protective box (13) is installed at the bottom of the outer side of the air intake assembly body (1), and the cylinder (53) is located inside the protective box (13).

8. The negative pressure exhaust fan assembly applied in VOC waste gas treatment process according to claim 2, characterized in that: A positioning block (14) is installed at the bottom of the connecting block (52), and a positioning groove (15) is provided at the bottom of the outer side of the air-guiding component body (1). The surface of the positioning block (14) is movably connected to the inside of the positioning groove (15).

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