Flow control device of air filter

Abstract

The utility model relates to the technical field of flow control devices, and discloses an air filter flow control device which comprises an air filter body, a connecting pipe is arranged on one side of the air filter body, an adjusting butterfly valve is arranged on the side, away from the air filter body, of the connecting pipe, and a pre-screening net is fixed to the inner wall of the end, close to the air filter body, of the connecting pipe. Three scraping plates are slidably connected to the side, away from the air filter body, of the pre-screening net, the sides, close to each other, of the three scraping plates are fixedly connected with the same mounting plate, a round rod is fixedly connected to the side, away from the pre-screening net, of the mounting plate, the round rod is rotationally sleeved with a fixing plate, and the fixing plate is fixedly connected with the inner wall of the connecting pipe. A first bevel gear is fixedly connected to the side, away from the pre-screening net, of the round rod, and the first bevel gear is connected with a second bevel gear in an engaged mode. The service life of the air filter can be guaranteed, the air filter is prevented from being blocked or damaged by large-size impurities, and the pre-screen is convenient to clean and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of flow control devices, in particular to a flow control device for an air filter. Background Art

[0002] An air filter is a device used to filter particulate matter, dust, bacteria and other pollutants in the air. An air filter flow control device is a device used to adjust the flow of air entering and leaving the air filter. It can adjust the air intake of the air filter as needed to ensure the normal operation and filtering effect of the air filter. An air filter flow control device is usually used in air purification equipment, air conditioning systems, industrial production lines, etc. It can effectively protect the air filter, extend its service life, and improve the filtering effect. Therefore, it is widely used. However, most of the air filter flow control devices in the prior art still have some problems that need to be solved during use.

[0003] Most of the flow control devices of air filters in the prior art are usually composed of a butterfly valve, which has a relatively simple function and can only adjust the flow rate. However, in actual use, the air flow flowing to the air filter also contains some larger impurities. If these impurities directly enter the air filter, the aging of the air filter will be accelerated, which will seriously affect the service life of the air filter and cause the air filter to be blocked or even damaged. Therefore, it is necessary to design a flow control device for the air filter that can perform pre-filtration and is easy to clean and maintain to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a flow control device for an air filter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A flow control device for an air filter comprises an air filter body, a connecting pipe is provided on one side of the air filter body, a regulating butterfly valve is provided on the side of the connecting pipe away from the air filter body, a pre-screen is fixed to the inner wall of one end of the connecting pipe close to the air filter body, the pre-screen is slidably connected to three scrapers on the side away from the air filter body, the three scrapers are fixedly connected to the same mounting plate on the sides close to each other, the mounting plate is fixedly connected to a round rod on the side away from the pre-screen, a fixing plate is rotatably sleeved on the round rod, the fixing plate is fixedly connected to the inner wall of the connecting pipe, the round rod is fixedly connected to a first bevel gear on the side away from the pre-screen, the first bevel gear is meshingly connected to a second bevel gear, the second bevel gear is fixedly penetrated with a driving rod, the top of the connecting pipe is fixedly connected with a motor, the output shaft of the motor is fixedly connected to the driving rod, and the driving rod rotates and passes through the top of the connecting pipe. Due to the use of a pre-screen for pre-filtration to prevent larger impurities from entering the air filter, and the use of a scraper to scrape and clean the pre-screen, the problem that most of the flow control devices of the air filters in the prior art proposed in the background technology have relatively single functions and cannot pre-filter impurities is effectively solved, thereby achieving the technical effect of being able to ensure the service life of the air filter, avoiding the air filter from being blocked or damaged by larger impurities, and facilitating the cleaning and maintenance of the pre-screen.

[0007] As a further solution of the utility model, a discharge port is provided at the bottom of the connecting pipe, a sealing plate is arranged in the discharge port, a first ring is fixedly connected to the top of the sealing plate, a second ring is rotatably connected to the inner wall of the first ring, a sleeve is fixedly connected to the inner wall of the second ring, a plug rod is rotatably connected to the inner wall of the sleeve, the plug rod is fixedly connected to the driving rod, a slide groove is provided on the outer wall of the plug rod, the slide groove consists of two straight grooves and an arc-shaped inclined groove, a sliding rod is arranged in the slide groove, the sliding rod is slidably connected to the plug rod, and the sliding rod is fixedly connected to the sleeve. Due to the technical means of lowering the sealing plate during the process of cleaning impurities so that the impurities can be discharged through the discharge port, the technical effect of reducing the difficulty of operation, facilitating operation and reducing the workload of the staff is achieved.

[0008] As a further solution of the utility model, limit rods are slidably provided at the four corners of the sealing plate.

[0009] As a further solution of the utility model, a plurality of triangular grooves are formed on the first circular ring, a plurality of square grooves are formed on the second circular ring, and a limiting plate is provided in each of the plurality of square grooves. The limiting plate is slidably connected to the second circular ring, and a spring is fixedly connected to the limiting plate on a side away from the first circular ring, and one side of the spring is fixedly connected to the second circular ring.

[0010] As a further solution of the utility model, the tops of the four limit rods are fixedly connected to the outer wall of the connecting pipe.

[0011] As a further solution of the utility model, the two oblique sides of the limiting plate are adapted to the triangular groove.

[0012] The beneficial effects of the utility model are:

[0013] The utility model adopts a pre-screen for pre-filtration to prevent larger impurities from entering the air filter, and uses a scraper to scrape and clean the pre-screen. Therefore, the problem that most of the flow control devices of the air filters in the prior art mentioned in the background technology usually have a single function and cannot pre-filter impurities is effectively solved, thereby achieving the technical effect of ensuring the service life of the air filter, preventing the air filter from being blocked or damaged by larger impurities, and facilitating the cleaning and maintenance of the pre-screen.

[0014] The utility model adopts the technical means of lowering the sealing plate during the process of cleaning impurities so that the impurities can be discharged through the discharge port, thereby achieving the technical effects of reducing the difficulty of operation, facilitating operation, and reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional structural schematic diagram of an air filter flow control device proposed by the utility model;

[0016] Figure 2 This is a first partial structural schematic diagram of a flow control device for an air filter proposed by the utility model;

[0017] Figure 3 This is a structural schematic diagram of a connecting pipe of an air filter flow control device proposed by the utility model;

[0018] Figure 4 A second partial structural schematic diagram of a flow control device for an air filter proposed by the utility model;

[0019] Figure 5 This is a structural schematic diagram of a sealing plate of an air filter flow control device proposed by the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the sealing plate of an air filter flow control device proposed by the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the first circular ring of an air filter flow control device proposed by the utility model;

[0022] Figure 8The utility model is a schematic diagram of the cross-sectional structure of the second ring of the flow control device of the air filter.

[0023] In the figure: 1. air filter body; 2. connecting pipe; 3. regulating butterfly valve; 4. pre-screen; 5. scraper; 6. mounting plate; 7. first bevel gear; 8. second bevel gear; 9. driving rod; 10. motor; 11. fixing plate; 12. round rod; 13. discharge port; 14. sealing plate; 15. first circular ring; 16. second circular ring; 17. sleeve; 18. plug rod; 19. slide groove; 20. sliding rod; 21. triangular groove; 22. square groove; 23. limit plate; 24. spring; 25. limit rod. DETAILED DESCRIPTION

[0024] 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 of the embodiments.

[0025] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0026] Reference Figure 1-Figure 8 A flow control device for an air filter comprises an air filter body 1, a connecting pipe 2 is arranged on one side of the air filter body 1, an adjusting butterfly valve 3 is arranged on the side of the connecting pipe 2 away from the air filter body 1, a pre-screen 4 is fixed to the inner wall of the connecting pipe 2 at one end close to the air filter body 1, the pre-screen 4 is slidably connected to three scrapers 5 on the side away from the air filter body 1, the three scrapers 5 are fixedly connected to the same mounting plate 6 on the side close to each other, the mounting plate 6 is fixedly connected to a round rod 12 on the side away from the pre-screen 4, the round rod 12 is rotatably sleeved with a fixing plate 11, the fixing plate 11 is fixedly connected to the inner wall of the connecting pipe 2, the round rod 12 is fixedly connected to a first bevel gear 7 on the side away from the pre-screen 4, the first bevel gear 7 is meshingly connected There is a second bevel gear 8, and a driving rod 9 is fixedly passed through the second bevel gear 8. The top of the connecting pipe 2 is fixedly connected to a motor 10, and the output shaft of the motor 10 is fixedly connected to the driving rod 9. The driving rod 9 rotates and passes through the top of the connecting pipe 2. Since a pre-screen 4 is used for pre-filtration to prevent larger impurities from entering the air filter, and a scraper 5 is used to scrape and clean the pre-screen 4, the problem that most of the flow control devices of the air filters in the prior art mentioned in the background technology have a relatively single function and cannot pre-filter impurities is effectively solved, thereby achieving the technical effect of being able to ensure the service life of the air filter, avoiding the air filter from being blocked or damaged by larger impurities, and facilitating the cleaning and maintenance of the pre-screen.

[0027] In this embodiment, a discharge port 13 is provided at the bottom of the connecting pipe 2, a sealing plate 14 is arranged in the discharge port 13, a first ring 15 is fixedly connected to the top of the sealing plate 14, a second ring 16 is rotatably connected to the inner wall of the first ring 15, a sleeve 17 is fixedly connected to the inner wall of the second ring 16, a plug rod 18 is rotatably connected to the inner wall of the sleeve 17, the plug rod 18 is fixedly connected to the driving rod 9, a slide groove 19 is provided on the outer wall of the plug rod 18, the slide groove 19 is composed of two straight grooves and an arc-shaped inclined groove, a sliding rod 20 is arranged in the slide groove 19, the sliding rod 20 is slidably connected to the plug rod 18, and the sliding rod 20 is fixedly connected to the sleeve 17. Due to the technical means of lowering the sealing plate 14 in the process of cleaning impurities so that the impurities can be discharged through the discharge port 13, the technical effect of reducing the difficulty of operation, facilitating operation and reducing the workload of the staff is achieved.

[0028] In this embodiment, limiting rods 25 are slidably provided at the four corners of the sealing plate 14 .

[0029] In this embodiment, a plurality of triangular grooves 21 are formed on the first circular ring 15, and a plurality of square grooves 22 are formed on the second circular ring 16. Limiting plates 23 are provided in the plurality of square grooves 22. The limiting plates 23 are slidably connected to the second circular ring 16. The limiting plates 23 are fixedly connected to a spring 24 on the side away from the first circular ring 15, and one side of the spring 24 is fixedly connected to the second circular ring 16.

[0030] In this embodiment, the tops of the four limiting rods 25 are fixedly connected to the outer wall of the connecting pipe 2 .

[0031] In this embodiment, the two oblique sides of the limiting plate 23 are matched with the triangular groove 21 .

[0032] Working principle: When using this device, the pre-screen 4 can pre-filter impurities, block larger impurities, and prevent them from entering the air filter body 1 and causing damage to the air filter body 1. When the air flow needs to be adjusted, the valve disc of the regulating butterfly valve 3 can be rotated to adjust the flow cross-sectional area, thereby achieving flow adjustment. After impurities are accumulated on the pre-screen 4, the motor 10 can be started, and the output shaft of the motor 10 will drive the drive rod 9 to rotate, and the drive rod 9 will drive the second bevel gear 8 to rotate, and the second bevel gear 8 will drive the first bevel gear 7 to rotate, and the first bevel gear 7 will drive The movable round rod 12 rotates, and the round rod 12 drives the mounting plate 6 to rotate, and the mounting plate 6 drives the scraper 5 to make a circular motion to scrape the pre-screen 4, and scrape off the impurities accumulated on the surface of the pre-screen 4. When the driving rod 9 rotates, it also drives the insertion rod 18 to rotate, and the insertion rod 18 causes the sliding rod 20 to slide in the slide groove 19, and the sliding rod 20 moves from the straight groove at the top of the slide groove 19 to the arc-shaped inclined groove of the slide groove 19, and finally enters the straight groove at the bottom of the slide groove 19. In the process of the movement of the sliding rod 20, the sleeve 17 is driven to descend, and the sleeve 17 drives the second circular ring 16 descends, the second ring 16 will drive the spring 24 to descend, the spring 24 will drive the limit plate 23 to descend, the limit plate 23 will drive the first ring 15 to descend, the first ring 15 will drive the sealing plate 14 to descend, and the sealing plate 14 can only descend without deflection due to the restriction of the limit rod 25. After the sliding rod 20 moves into the bottom straight groove of the slide groove 19, the plug rod 18 continues to rotate, which will drive the sliding rod 20 to do circular motion. At this time, the plug rod 18 can drive the sleeve 17 to rotate, and the sleeve 17 will drive the spring 24 and the limit plate 23 to do circular motion. The limiting plate 23 is received in the square groove 22 by the strong squeezing of the triangular groove 21, and the limiting plate 23 can be stuck in the annular groove on the inner wall of the first circular ring 15, so as to prevent the sealing plate 14 from falling off. When the driving rod 9 continues to rotate, the scraper 5 can clean the pre-screen 4, and the sealing plate 14 can also be continuously in a state of leaving the discharge port 13, and the cleaned impurities can be discharged through the discharge port 13. After the cleaning is completed, the output shaft of the motor 10 is reversed to make the sealing plate 14 return to the position of the discharge port 13 for sealing, and the device can be used normally.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air filter flow control device, comprising an air filter body (1), characterized in that: A connecting pipe (2) is provided on one side of the air filter body (1); a regulating butterfly valve (3) is provided on the connecting pipe (2) on the side away from the air filter body (1); a pre-screen (4) is fixed on the inner wall of one end of the connecting pipe (2) close to the air filter body (1); three scrapers (5) are slidably connected to the pre-screen (4) on the side away from the air filter body (1); the three scrapers (5) are fixedly connected to the same mounting plate (6) on the sides close to each other; the mounting plate (6) is fixedly connected to a round rod (12) on the side away from the pre-screen (4); The round rod (12) is rotatably sleeved with a fixing plate (11), the fixing plate (11) is fixedly connected to the inner wall of the connecting tube (2), the round rod (12) is fixedly connected to a first bevel gear (7) on the side away from the pre-screen (4), the first bevel gear (7) is meshingly connected to a second bevel gear (8), the second bevel gear (8) is fixedly penetrated with a driving rod (9), the top of the connecting tube (2) is fixedly connected to a motor (10), the output shaft of the motor (10) is fixedly connected to the driving rod (9), and the driving rod (9) rotatably passes through the top of the connecting tube (2).

2. The air filter flow control device according to claim 1, characterized in that: The bottom of the connecting pipe (2) is provided with a discharge port (13), a sealing plate (14) is arranged inside the discharge port (13), a first circular ring (15) is fixedly connected to the top of the sealing plate (14), the inner wall of the first circular ring (15) is rotatably connected to the second circular ring (16), the inner wall of the second circular ring (16) is fixedly connected to the sleeve (17), the inner wall of the sleeve (17) is rotatably connected to the insertion rod (18), the insertion rod (18) is fixedly connected to the driving rod (9), the outer wall of the insertion rod (18) is provided with a slide groove (19), the slide groove (19) is composed of two straight grooves and one arc-shaped inclined groove, a sliding rod (20) is arranged inside the slide groove (19), the sliding rod (20) is slidably connected to the insertion rod (18), and the sliding rod (20) is fixedly connected to the sleeve (17).

3. The air filter flow control device according to claim 1, characterized in that: Limiting rods (25) are slidably provided at the four corners of the sealing plate (14).

4. The air filter flow control device according to claim 2, characterized in that: The first circular ring (15) is provided with a plurality of triangular grooves (21), the second circular ring (16) is provided with a plurality of square grooves (22), a limiting plate (23) is arranged in each of the plurality of square grooves (22), the limiting plate (23) is slidably connected to the second circular ring (16), the limiting plate (23) is fixedly connected to a spring (24) on a side away from the first circular ring (15), and one side of the spring (24) is fixedly connected to the second circular ring (16).

5. The air filter flow control device according to claim 3, characterized in that: The tops of the four limiting rods (25) are all fixedly connected to the outer wall of the connecting pipe (2).

6. The air filter flow control device according to claim 4, characterized in that: The two oblique sides of the limiting plate (23) are adapted to the triangular groove (21).

Images