A pulse type automatic backwash filter

Abstract

The utility model discloses a pulse type automatic backwash filter, including filter, the filter outside fixed setting has the support frame, the filter top inlay fixed setting has the first pipe, the filter bottom inlay fixed setting has the second pipe, the filter side position inlay fixed setting has the third pipe, the filter inside fixed setting has the filter screen, the filter bottom is provided with the washing mechanism of convenient backwash. The utility model needs backwash, closes first pipe, second pipe at this moment, opens third pipe and fifth pipe, then will the water source of backwash through fifth pipe and inject, and the impact vane plate is driven movable shaft rotation through the hollow block inside when the injection, so drive the scraper rotation, scrape the inside wall of filter screen, and the sundries is scraped down, and the water source is injected through fourth pipe and is in the filter inside, and then is washed back through the filter screen, and the water source of washing is discharged through third pipe, so complete the washing work.

Description

Technical Field

[0001] This utility model relates to the field of filtration equipment, specifically a pulse-type automatic backwashing filter. Background Technology

[0002] Filters are an indispensable device in pipelines that transport media. They are usually installed at the inlet end of pressure reducing valves, pressure relief valves, level control valves, and other equipment. Filters consist of a cylinder, stainless steel filter screen, sewage discharge section, transmission device, and electrical control section.

[0003] Existing filters require backwashing during prolonged use to ensure filtration efficiency. However, some stubborn dirt adheres to the outside of the filter screen and is difficult to clean completely during backwashing, thus reducing the cleanliness of the backwash and affecting subsequent filtration time and efficiency. Therefore, a device is urgently needed to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a pulse-type automatic backwash filter to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pulse-type automatic backwashing filter, comprising a filter, a support frame fixedly installed on the outside of the filter, a first pipe fixedly installed at the top of the filter, a second pipe fixedly installed at the bottom of the filter, a third pipe fixedly installed on the side of the filter, a filter screen fixedly installed inside the filter, and a backwashing mechanism for convenient backwashing at the bottom of the filter. When the third pipe is closed, the water to be filtered is injected into the filter through the first pipe and filtered by the filter screen. The filtered water is discharged through the second pipe, thus completing the water filtration process, and impurities are adsorbed on the inner wall of the filter screen.

[0006] Preferably, the flushing mechanism includes a hollow block, a fourth pipe, a fifth pipe, a blade, a movable shaft, a scraper, and a limiting ring. The hollow block is fixed at the bottom of the filter, the fourth pipe is fixed to one side of the hollow block, and the other side of the fourth pipe is embedded and fixed at the bottom of the filter. The fifth pipe is fixed to one side of the hollow block, the scraper is fixed to the outside of the movable shaft, the limiting ring is fixed to the outside of the movable shaft, and the blade is fixed to the outside of the movable shaft. When backwashing is required during use, the first and second pipes are closed, and the third and fifth pipes are opened. Then, the backwash water is injected through the fifth pipe. When flushing, the blade inside the hollow block drives the movable shaft to rotate, which in turn drives the scraper to rotate, scraping the inner wall of the filter screen and removing debris. At the same time, water is injected into the filter through the fourth pipe and then backwashes the filter screen. The flushing water is discharged through the third pipe, thus completing the flushing work.

[0007] Preferably, solenoid valves are installed on the first, second, and third pipes via connecting flanges to facilitate the opening and closing of the first, second, and third pipes.

[0008] Preferably, the movable shaft is movably inserted at the center of the bottom end of the filter, the movable shaft and the filter are in a movable sealed contact, and the top end of the movable shaft movably penetrates the filter screen.

[0009] Preferably, there are two scrapers, which are symmetrically installed on both sides of the movable shaft and are in close contact with the inner side of the filter screen.

[0010] Preferably, two limiting rings are provided, which are installed on the inner and outer sides of the filter respectively.

[0011] Preferably, a plurality of blades are provided and are installed at equal intervals on the outside of the movable shaft, and a solenoid valve is installed on the fifth pipe via a connecting flange.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] When backwashing is required during use, the first and second pipes are closed, and the third and fifth pipes are opened. The backwash water is then injected through the fifth pipe. During the backwashing, the impact blades inside the hollow block drive the movable shaft to rotate, which in turn drives the scraper to rotate and scrape the inner wall of the filter screen, removing debris. At the same time, water is injected into the filter through the fourth pipe and backwashes it through the filter screen. The backwash water is discharged through the third pipe, thus completing the backwashing process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a pulse-type automatic backwashing filter according to the present invention;

[0015] Figure 2 This is a bottom view of a pulse-type automatic backwash filter according to this utility model;

[0016] Figure 3 This is a cross-sectional view of a pulse-type automatic backwashing filter according to this utility model;

[0017] Figure 4 This is an enlarged schematic diagram of a pulse-type automatic backwashing filter A according to the present invention;

[0018] Figure 5 This is an enlarged schematic diagram of a pulse-type automatic backwashing filter B according to the present invention.

[0019] In the diagram: 1. Filter; 2. Support frame; 3. First pipe; 4. Third pipe; 5. Second pipe; 6. Filter screen; 7. Scraper; 8. Movable shaft; 9. Limiting ring; 10. Hollow block; 11. Blade; 12. Fifth pipe; 13. Fourth pipe. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 This utility model provides a pulse-type automatic backwash filter, including a filter 1. A support frame 2 is fixed to the outside of the filter 1 by bolts. A first pipe 3 is embedded and fixed at the top of the filter 1, a second pipe 5 is embedded and fixed at the bottom of the filter 1, and a third pipe 4 is embedded and fixed at the side of the filter 1. A filter screen 6 is welded and fixed inside the filter 1. The bottom of the filter 1 has a flushing mechanism for easy backwashing. Solenoid valves are installed on the first pipe 3, the second pipe 5, and the third pipe 4 through connecting flanges to facilitate the opening and closing of the first pipe 3, the second pipe 5, and the third pipe 4. When the third pipe 4 is closed, the water to be filtered is injected into the filter 1 through the first pipe 3 and filtered by the filter screen 6. The filtered water is discharged through the second pipe 5, thus completing the water filtration work. Impurities are adsorbed on the inner wall of the filter screen 6.

[0022] The flushing mechanism includes a hollow block 10, a fourth pipe 13, a fifth pipe 12, a blade 11, a movable shaft 8, a scraper 7, and a limiting ring 9. The hollow block 10 is welded and fixed to the bottom of the filter 1. The fourth pipe 13 is welded and fixed to one side of the hollow block 10, and the other side of the fourth pipe 13 is embedded and fixed to the bottom of the filter 1. The fifth pipe 12 is welded and fixed to one side of the hollow block 10. The movable shaft 8 is movably inserted through the center of the bottom of the filter 1, and there is a movable sealing contact between the movable shaft 8 and the filter 1. The top of the movable shaft 8 movably passes through the filter screen 6. The scraper 7 is welded and fixed to the outside of the movable shaft 8. There are two scrapers 7, which are symmetrically installed on both sides of the movable shaft 8 and are close to the inside of the filter screen 6. The limiting ring 9 is welded and fixed to the outside of the movable shaft 8. There are two limiting rings 9. The blades 11 are installed on the inner and outer sides of the filter 1, respectively. The blades 11 are welded and fixed to the outside of the movable shaft 8. There are several blades 11, which are equidistantly installed on the outside of the movable shaft 8. A solenoid valve is installed on the fifth pipe 12 through a connecting flange. When backwashing is required, the first pipe 3 and the second pipe 5 are closed, and the third pipe 4 and the fifth pipe 12 are opened. Then, the backwash water is injected through the fifth pipe 12. When it is flushed, it impacts the blades 11 inside the hollow block 10, which drives the movable shaft 8 to rotate. This drives the scraper 7 to rotate and scrape the inner wall of the filter screen 6 to remove debris. At the same time, the water is injected into the filter 1 through the fourth pipe 13 and then backwashes it through the filter screen 6. The flushing water is discharged through the third pipe 4, thus completing the flushing work.

[0023] Working principle: When backwashing is required during use, close the first pipe 3 and the second pipe 5, and open the third pipe 4 and the fifth pipe 12. Then, inject backwash water through the fifth pipe 12. When flushing, the impact blade 11 inside the hollow block 10 drives the movable shaft 8 to rotate, which in turn drives the scraper 7 to rotate and scrape the inner wall of the filter screen 6 to remove debris. At the same time, water is injected into the filter 1 through the fourth pipe 13 and then backwashes it through the filter screen 6. The flushing water is discharged through the third pipe 4, thus completing the flushing work.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] 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 pulse-type automatic backwashing filter, comprising a filter (1), characterized in that: A support frame (2) is fixedly installed on the outside of the filter (1), a first pipe (3) is fixedly installed at the top of the filter (1), a second pipe (5) is fixedly installed at the bottom of the filter (1), a third pipe (4) is fixedly installed on the side of the filter (1), a filter screen (6) is fixedly installed inside the filter (1), and a backwashing mechanism is provided at the bottom of the filter (1).

2. The pulse-type automatic backwashing filter according to claim 1, characterized in that: The rinsing mechanism includes a hollow block (10), a fourth pipe (13), a fifth pipe (12), a blade (11), a movable shaft (8), a scraper (7), and a limiting ring (9). The hollow block (10) is fixed at the bottom of the filter (1). The fourth pipe (13) is fixed on one side of the hollow block (10), and the other side of the fourth pipe (13) is embedded and fixed at the bottom of the filter (1). The fifth pipe (12) is fixed on one side of the hollow block (10). The scraper (7) is fixed on the outside of the movable shaft (8). The limiting ring (9) is fixed on the outside of the movable shaft (8). The blade (11) is fixed on the outside of the movable shaft (8).

3. A pulse-type automatic backwashing filter according to claim 2, characterized in that: Solenoid valves are installed on the first pipe (3), the second pipe (5) and the third pipe (4) via connecting flanges.

4. A pulse-type automatic backwashing filter according to claim 3, characterized in that: The movable shaft (8) is movably inserted at the center of the bottom end of the filter (1), and there is a movable sealed contact between the movable shaft (8) and the filter (1). The top end of the movable shaft (8) movably passes through the filter screen (6).

5. A pulse-type automatic backwashing filter according to claim 4, characterized in that: Two scrapers (7) are provided, symmetrically installed on both sides of the movable shaft (8) and closely attached to the inside of the filter screen (6).

6. A pulse-type automatic backwashing filter according to claim 5, characterized in that: Two limiting rings (9) are provided, which are installed on the inner and outer sides of the filter (1) respectively.

7. A pulse-type automatic backwashing filter according to claim 6, characterized in that: Several blades (11) are provided and are installed at equal intervals on the outside of the movable shaft (8). A solenoid valve is installed on the fifth pipe (12) through a connecting flange.

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