Filtering device convenient to clean

Abstract

The utility model relates to the technical field of filtering devices, in particular to a filtering device convenient to clean, which is characterized in that an upper scraping ring is lapped on the outer side of a filter screen, a lower scraping ring is detachably connected below the upper scraping ring, the lower scraping ring is lapped on the filter screen, an outer ring is arranged on the outer side of the upper scraping ring, and an inner ring is arranged on the outer side of the outer ring. A first blocking plate and a second blocking plate are arranged in the moving direction of the outer ring, the second blocking plate is connected to the feeding pipe in a sliding mode, the first blocking plate is connected to the impurity discharging pipe in a sliding mode, the outer ring is in threaded connection with a screw rod, and the screw rod is detachably connected to a servo motor. In the downward-moving scraping process of the lower scraping ring and the upper scraping ring, the outer ring can push open the first blocking plate, the second blocking plate is driven by the outer ring to block the feeding pipe, then a pump is started, impurities can be flushed into the impurity discharging pipe after water is injected into the filter, and therefore the impurities can be independently cleaned, a filter screen of the filter does not need to be independently detached for cleaning, and the cleaning efficiency is improved. Therefore, the labor intensity of personnel is reduced, and the cleaning efficiency of the filter screen is also improved.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, specifically to a filtration device that is easy to clean. Background Technology

[0002] In phosphoric acid production, the filter used for slurry filtration is a key piece of equipment in the entire process. In my country, the manufacturing of filter presses has gone through a process of introduction, digestion, absorption, independent research and development, and manufacturing. Currently, two relatively complete series of products have been formed: rotary table filter presses and tilting disc filter presses.

[0003] In the phosphoric acid production process, the filter screen needs to be removed and cleaned after long-term use, and then reinstalled for use. The cleaning process of the filter screen is complicated and cumbersome. The preparation process cannot achieve self-cleaning of the filter screen, which increases the labor intensity of personnel. Utility Model Content

[0004] The purpose of this invention is to provide a filter device that is easy to clean, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a filtration device that is easy to clean, comprising a filter, a filter screen, a feed pipe, a discharge pipe, a waste discharge pipe, a servo motor, and a pump. An upper scraper ring is attached to the outer side of the filter screen, and a lower scraper ring is detachably connected below the upper scraper ring. The lower scraper ring is attached to the filter screen. An outer ring is provided on the outer side of the upper scraper ring. A first blocking plate and a second blocking plate are provided in the moving direction of the outer ring. The second blocking plate is slidably connected to the feed pipe, and the first blocking plate is slidably connected to the waste discharge pipe. A screw is threadedly connected to the outer ring, and the screw is detachably connected to the servo motor.

[0006] Preferably, a first vertical rod is detachably connected to the discharge pipe of the filter, and a corresponding first blocking plate is slidably connected to the first vertical rod. The first blocking plate is rectangular in shape.

[0007] Preferably, a platform is detachably connected to the first blocking plate, and a top rod is attached to the platform. The top rod is arranged vertically on the platform, and one end of the top rod is detachably connected to the outer ring.

[0008] Preferably, a baffle is provided on the first vertical rod, and a first spring is sleeved on the first vertical rod between the baffle and the first blocking plate. One end of the first spring is detached and connected to the baffle, and the other end of the first spring is detached and connected to the baffle.

[0009] Preferably, a limiting rod is detachably connected to the top of the filter, the limiting rod is inserted into the outer ring, and the limiting rod is parallel to the screw.

[0010] Preferably, a second vertical rod is detachably connected to the feed pipe of the filter, and a second blocking plate is slidably connected to the second vertical rod. The second blocking plate is rectangular and has a platform. An outer ring is attached to the platform. A second spring is sleeved on the second vertical rod between the second blocking plate and the filter. One end of the second spring is detachably connected to the filter, and the other end of the second spring is detachably connected to the second blocking plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] By attaching an upper scraper ring and a lower scraper ring to the filter screen, with an outer ring connected to the upper scraper ring, the outer ring moves simultaneously with the upper and lower scraper rings. A screw is connected to the outer ring, and a servo motor drives the screw to move the outer ring up and down. As the outer ring moves up and down along the screw, the upper and lower scraper rings scrape off impurities from the filter screen surface. During the downward scraping process, the outer ring pushes open the first blocking plate, and the second blocking plate, driven by the outer ring, blocks the feed pipe. Then, the pump is started, injecting water into the filter, and the impurities are flushed into the discharge pipe, thus achieving separate cleaning of impurities. The filter screen does not need to be disassembled and cleaned separately, reducing the labor intensity of personnel and improving the cleaning efficiency of the filter screen. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the screw structure in this utility model;

[0016] Figure 4 This is an enlarged structural diagram of region A in this utility model;

[0017] In the diagram: 1. Filter; 2. Feed pipe; 3. Pump; 4. Servo motor; 5. Waste discharge pipe; 6. Discharge pipe; 7. Filter screen; 8. Lower scraper ring; 9. First blocking plate; 10. First vertical rod; 11. Outer ring; 12. Upper scraper ring; 13. Baffle; 14. First spring; 15. Screw; 16. Limiting rod; 17. Second spring; 18. Second blocking plate; 19. Second vertical rod; 20. Platform; 21. Top rod. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1 to 4 This utility model provides a technical solution: a filter device that is easy to clean, including a filter 1, a filter screen 7, a feed pipe 2, a discharge pipe 6, a waste discharge pipe 5, a servo motor 4, and a pump 3. An upper scraper ring 12 is attached to the outside of the filter screen 7, and a lower scraper ring 8 is detachably connected below the upper scraper ring 12. The lower scraper ring 8 is attached to the filter screen 7. An outer ring 11 is provided on the outside of the upper scraper ring 12. A first blocking plate 9 and a second blocking plate 18 are provided in the moving direction of the outer ring 11. The second blocking plate 18 is slidably connected to the feed pipe 2, and the first blocking plate 9 is slidably connected to the waste discharge pipe 5. A screw 15 is threadedly connected to the outer ring 11, and the screw 15 is detachably connected to the servo motor 4.

[0020] The servo motor 4 drives the screw 15 to move the outer ring 11 up and down. The outer ring 11 moves up and down along the screw 15. When it moves up and down, the upper scraper ring 12 and the lower scraper ring 8 scrape off the impurities on the surface of the filter screen 7. During the downward scraping process of the lower scraper ring 8 and the upper scraper ring 12, the outer ring 11 will push open the first blocking plate 9. The second blocking plate 18 will be blocked at the position of the feed pipe 2 by the drive of the outer ring 11. Then the pump 3 is started to inject water into the filter 1, and the impurities can be flushed into the discharge pipe 5, thereby realizing the separate cleaning of impurities. The filter screen 7 of the filter 1 does not need to be disassembled and cleaned separately, which reduces the labor intensity of personnel and improves the cleaning efficiency of the filter screen 7.

[0021] A first vertical rod 10 is detachably connected to the discharge pipe 5 of filter 1. A corresponding first blocking plate 9 is slidably connected to the first vertical rod 10. The first blocking plate 9 is rectangular. The first vertical rod 10 restricts the first blocking plate 9, allowing it to move up and down along the first vertical rod 10 without shifting its position. This ensures that the first blocking plate 9 can either block the discharge pipe 5 or move away from it.

[0022] A platform 20 is detachably connected to the first blocking plate 9. A top rod 21 is attached to the platform 20 and is arranged vertically on the platform 20. One end of the top rod 21 is detachably connected to the outer ring 11. By setting the platform 20 on the first blocking plate 9, the platform 20 can be connected to the top rod 21. When the top rod 21 moves down with the outer ring 11, it will push the platform 20, causing the platform 20 to move down. When it moves down, it will drive the first blocking plate 9 down, so that the first blocking plate 9 can move away from the discharge pipe 5, thereby opening the discharge pipe 5 and realizing the flow of impurities.

[0023] A baffle 13 is provided on the first vertical rod 10. A first spring 14 is sleeved on the first vertical rod 10 between the baffle 13 and the first blocking plate 9. One end of the first spring 14 is detachably connected to the baffle 13, and the other end of the first spring 14 is detachably connected to the baffle 13. By setting the baffle 13 on the first vertical rod 10, the baffle 13 can restrict the first spring 14, and the first spring 14 can also pull the first blocking plate 9. After the first blocking plate 9 moves down, it is not pushed by the top rod 21. The first spring 14 can drive the first blocking plate 9 to reset, thereby blocking the position of the discharge pipe 5 again, thus realizing the normal filtration of the equipment.

[0024] A limiting rod 16 is detachably connected to the top of filter 1. The limiting rod 16 is inserted into the outer ring 11 and is parallel to the screw 15. The limiting rod 16 restricts the outer ring 11, preventing it from rotating with the screw 15. The outer ring 11 can then move up and down along the screw 15 as it rotates, thereby driving the upper scraper ring 12 and the lower scraper ring 8 to scrape and remove impurities from the filter screen 7.

[0025] A second vertical rod 19 is detachably connected to the feed pipe 2 of filter 1. A second blocking plate 18 is slidably connected to the second vertical rod 19. The second blocking plate 18 is rectangular and has a platform 20. An outer ring 11 is attached to the platform 20. A second spring 17 is sleeved on the second vertical rod 19 between the second blocking plate 18 and filter 1. One end of the second spring 17 is detachably connected to filter 1, and the other end of the second spring 17 is detachably connected to the second blocking plate 18. The second vertical rod 19 can restrict the second blocking plate 18, allowing the second blocking plate 18 to move stably. When the outer ring 11 pushes the seat of the second blocking plate 18, it can drive the second blocking plate 18 to move towards the feed pipe 2, thereby blocking the feed pipe 2 and preventing impurities from entering the feed pipe 2 when cleaning the filter screen 7. The second spring 17 can drive the second blocking plate 18 to reset. After the second blocking plate 18 is no longer pushed, it will reset under the action of the second spring 17, thereby enabling normal feeding into the feed pipe 2.

[0026] 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 filtration device that is easy to clean, comprising a filter (1), a filter screen (7), a feed pipe (2), a discharge pipe (6), a waste discharge pipe (5), a servo motor (4), and a pump (3), characterized in that: The outer side of the filter screen (7) is connected to the upper scraper ring (12), and the lower scraper ring (8) is detachably connected below the upper scraper ring (12). The lower scraper ring (8) is connected to the filter screen (7). The outer side of the upper scraper ring (12) is provided with an outer ring (11). The outer ring (11) is provided with a first blocking plate (9) and a second blocking plate (18) in the moving direction. The second blocking plate (18) is slidably connected to the feed pipe (2). The first blocking plate (9) is slidably connected to the discharge pipe (5). The outer ring (11) is threaded with a screw (15), and the screw (15) is detachably connected to the servo motor (4).

2. The easy-to-clean filter device according to claim 1, characterized in that: The filter (1) has a first vertical rod (10) detachably connected to the discharge pipe (5) position. A corresponding first blocking plate (9) is slidably connected to the first vertical rod (10). The first blocking plate (9) is rectangular.

3. The easy-to-clean filter device according to claim 2, characterized in that: A platform (20) is detachably connected to the first blocking plate (9), and a top rod (21) is attached to the platform (20). The top rod (21) is arranged vertically on the platform (20), and one end of the top rod (21) is detachably connected to the outer ring (11).

4. The easy-to-clean filter device according to claim 2, characterized in that: A baffle (13) is provided on the first vertical rod (10). A first spring (14) is sleeved on the first vertical rod (10) between the baffle (13) and the first blocking plate (9). One end of the first spring (14) is detached and connected to the baffle (13), and the other end of the first spring (14) is detached and connected to the baffle (13).

5. The easy-to-clean filter device according to claim 1, characterized in that: A limiting rod (16) is detachably connected to the top of the filter (1). The limiting rod (16) is inserted into the outer ring (11). The limiting rod (16) is parallel to the screw (15).

6. The easy-to-clean filter device according to claim 1, characterized in that: A second vertical rod (19) is detachably connected to the feed pipe (2) of the filter (1). A second blocking plate (18) is slidably connected to the second vertical rod (19). The second blocking plate (18) is rectangular and has a platform (20) on it. An outer ring (11) overlaps the platform (20). A second spring (17) is sleeved on the second vertical rod (19) between the second blocking plate (18) and the filter (1). One end of the second spring (17) is detachably connected to the filter (1), and the other end of the second spring (17) is detachably connected to the second blocking plate (18).

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