Scraper type self-cleaning filter

Abstract

The utility model relates to the technical field of filters and discloses a scraper type self-cleaning filter which comprises a filter body, a first filter container is arranged in the filter body, a second filter container is fixed to the top end of the inner wall of the first filter container, a rotating shaft is installed in the center of the interior of the second filter container, a set of first scrapers are distributed on the outer wall of the rotating shaft in the circumferential direction at equal intervals, and second scrapers are arranged on the outer sides of the first scrapers. A connecting base is arranged at the bottom of the filter, and a backwashing head is mounted in the connecting base. The first filter container and the second filter container which are combined inside and outside are used for containing to-be-filtered liquid, filtering the liquid layer by layer and intercepting internal stains, the first scraper and the second scraper are connected and located on the inner side and the outer side of the second filter container respectively, the first scraper and the second scraper are driven by rotation of the rotating shaft to do circumferential movement, pollutants on the inner filter container and the outer filter container can be thoroughly scraped, and the filtering efficiency is improved. And by arranging the backwashing head, an external water pump can be connected to carry out backwashing on the filter liner, and sewage generated by washing is discharged outwards through the blow-off pipe.

Description

Technical Field

[0001] This application relates to the technical field of filters, and particularly to a scraper type self-cleaning filter. Background Art

[0002] In the fields of industrial production and water treatment, filters are one of the indispensable devices. During the use of traditional filters, due to the clogging of filter media and the accumulation of pollutants, regular manual cleaning or replacement of filter media is often required, which not only increases the labor intensity of operators but also affects the continuity and stability of the filtration system. In recent years, with the development of automation technology, some automatic cleaning filters have been developed, but most of them still have problems such as incomplete cleaning, high energy consumption, and complex structures. Although the existing rotary self-cleaning filters can achieve a certain degree of automatic cleaning, due to their complex cleaning structures, the cleaning effects are often not ideal, and the energy consumption is also relatively high. In addition, although some filters using chemical cleaning have good cleaning effects, there are risks of environmental pollution and filter media corrosion.

[0003] The above information disclosed in this background art is only used to increase the understanding of the background art of this application. Therefore, it may include prior art that is not known to ordinary technicians in this field. Summary of the Utility Model

[0004] In order to solve the problems that although the existing rotary self-cleaning filters can achieve a certain degree of automatic cleaning, due to their complex cleaning structures, the cleaning effects are often not ideal, and the energy consumption is also relatively high. In addition, although some filters using chemical cleaning have good cleaning effects, there are risks of environmental pollution and filter media corrosion, this application provides a scraper type self-cleaning filter.

[0005] A scraper type self-cleaning filter provided by this application adopts the following technical solutions:

[0006] A scraper type self-cleaning filter includes a filter. A first filter cartridge is provided inside the filter. The top end of the inner wall of the first filter cartridge is fixed with a second filter cartridge. A rotating shaft is installed at the center of the second filter cartridge. A group of first scrapers are circumferentially and equidistantly distributed on the outer wall of the rotating shaft. A second scraper is provided outside the first scraper. A connection base is provided at the bottom of the filter. A backwash head is installed inside the connection base.

[0007] Preferably, a sealing cover is installed outside the filter. An engine is installed on the top of the sealing cover. A filtration chamber is provided inside the filter. The output end of the engine extends into the filtration chamber and is in transmission connection with the rotating shaft.

[0008] Preferably, connecting pieces are symmetrically fixed on the outer wall of the rotating shaft. One end of each connecting piece is fixed to the first scraper, and a connecting rod for support is connected to the bottoms of the first scraper and the second scraper.

[0009] Preferably, the filter and the connection base are connected by a flange. A connection head is fixed at the center of the interior of the connection base. One end of the connection head extends into the first filter element, and a flushing pipe is fixed to the side wall of the connection base.

[0010] Preferably, an extension pipe is installed inside the flushing pipe. One end of the extension pipe extends into the connection head and is fixedly connected to the backwashing head. A sewage discharge pipe is installed at the center of the bottom of the connection base.

[0011] Preferably, a water inlet pipe is fixed to the outer wall of one side of the filter. A connection pipe is connected inside the water inlet pipe. One end of the connection pipe extends into the second filter element, and a water outlet pipe is fixed to the bottom end of the side of the filter away from the water inlet pipe.

[0012] In summary, the present application has the following beneficial technical effects:

[0013] In the present application, the first filter element and the second filter element combined inside and outside are used to hold the liquid to be filtered, layer-by-layer filter the liquid, and intercept the internal stains. Through the connection arrangement of the first scraper and the second scraper, which are located inside and outside the second filter element respectively, the rotation of the rotating shaft drives them to perform circumferential movement, so that the pollutants on the inner and outer filter elements can be completely scraped off, ensuring stable and reliable filtering effect. Also, through the setting of the backwashing head, an external water pump can be connected to backwash the filter element, and the sewage generated during cleaning is discharged outwards through the sewage discharge pipe. The overall structure is energy-saving and environmentally friendly, without using chemical cleaning agents, avoiding the risks of environmental pollution and filter material corrosion. Description of the Drawings

[0014] Figure 1 is the front view of a scraper type self-cleaning filter in an embodiment of the application.

[0015] Figure 2 is the cross-sectional view of the filter in an embodiment of the application.

[0016] Figure 3 is the exploded view of the cleaning mechanism in an embodiment of the application.

[0017] Description of the reference numerals: 1, filter; 2, sealing cover; 3, water inlet pipe; 4, water outlet pipe; 5, flushing pipe; 6, connection pipe; 7, engine; 8, filtration chamber; 9, first filter element; 10, connection base; 11, second filter element; 12, rotating shaft; 13, connecting piece; 14, first scraper; 15, second scraper; 16, connecting rod; 17, extension pipe; 18, connection head; 19, backwashing head; 20, sewage discharge pipe. Detailed Description of the Invention

[0018] The following further describes this application in detail with reference to the accompanying drawings. Figures 1-3 This application embodiment discloses a scraper - type self - cleaning filter.

[0019] Referring to Figure 1 , it includes a filter 1. A water inlet pipe 3 is fixedly installed on the outer wall of one side of the filter 1. The water inlet pipe 3 is connected to an external sewage pipe. A connecting pipe 6 is connected inside the water inlet pipe 3. At the bottom of the side of the filter 1 away from the water inlet pipe 3, a water outlet pipe 4 is fixedly installed, and the internally filtered liquid is discharged through the water outlet pipe 4. A sealing cover 2 is installed outside the filter 1. A first filter element 9 is fixedly installed at the bottom of the sealing cover 2. At the top end of the inner wall of the first filter element 9, a second filter element 11 is fixedly installed. One end of the connecting pipe 6 extends into the second filter element 11 to introduce sewage into the second filter element 11 for layer - by - layer filtration.

[0020] As Figures 2-3 shown, a rotating shaft 12 is installed at the center inside the second filter element 11. An engine 7 is installed on the top of the sealing cover 2. A filtration chamber 8 is provided inside the filter 1. The output end of the engine 7 extends into the filtration chamber 8 and is in transmission connection with the rotating shaft 12. Connecting pieces 13 are symmetrically fixedly installed on the outer wall of the rotating shaft 12. One end of the connecting piece 13 is fixedly connected to a first scraper 14;

[0021] A second scraper 15 is arranged outside the first scraper 14. At the bottom of the first scraper 14 and the second scraper 15, a connecting rod 16 for support is connected. The connecting rod 16 is set in an L - shape. The first scraper 14 is located inside the second filter element 11, while the second scraper 15 extends between the second filter element 11 and the first filter element 9 for cleaning the inner wall of the first filter element 9.

[0022] Furthermore, the bottom of the filter 1 is connected to a connection base 10 through a flange. A connection head 18 is fixedly installed at the center inside the connection base 10. One end of the connection head 18 extends into the first filter element 9 and fits with the inner wall of the first filter element 9 to collect impurities. A flushing pipe 5 is fixedly installed on the side wall of the connection base 10. An extension pipe 17 is installed inside the flushing pipe 5. One end of the extension pipe 17 extends into the connection head 18 and is fixedly installed with a back - flushing head 19. The back - flushing head 19 does not contact the inner wall of the connection head 18. A sewage discharge pipe 20 is installed at the center of the bottom of the connection base 10 for discharging the impurities generated during cleaning.

[0023] The implementation principle of a scraper - type self - cleaning filter in an embodiment of this application is as follows: During use, first connect to an external sewage pipeline through the water inlet pipe 3 in advance. The sewage is transported to the second filter cartridge 11 through the connecting pipe 6. The liquid is filtered successively through the second filter cartridge 11 and the first filter cartridge 9 and then discharged into the filtration chamber 8, and then discharged outward through the water outlet pipe 4. After working for a long time, the engine 7 can be started to drive the rotating shaft 12. The rotating shaft 12 drives the first scraper 14 to rotate to clean the inner wall of the second filter cartridge 11. At the same time, the connecting rod 16 will drive the second scraper 15 to clean the inner wall of the first filter cartridge 9 accordingly, which can completely scrape off the pollutants on the inner and outer filter cartridges, ensuring that the filtering effect is stable and reliable. Subsequently, an external cleaning pump can be connected through the flushing pipe 5, and the liquid is pumped into the extension pipe 17 and the second filter cartridge 11 and the first filter cartridge 9 are back - flushed through the back - flushing head 19. The adhered stains can be washed off. Opening the regulating valve can discharge the internal impurities through the sewage discharge pipe 20. The overall structure is simple and ingenious, achieving a good self - cleaning effect.

[0024] Finally, several points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. It can be a mechanical connection or an electrical connection, or the internal communication of two components. It can be directly connected. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change;

[0025] Second: In the attached drawings of the disclosed embodiments of this utility model, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of this utility model can be combined with each other;

[0026] Finally: The above - mentioned are only the preferred embodiments of this utility model and are not used to limit this utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of this utility model shall be included within the protection scope of this utility model.

[0027] The above are all the preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A scraper-type self-cleaning filter, comprising a filter (1), characterized in that: The filter (1) is provided with a filter liner (9) inside, a filter liner (11) is fixed to the top of the inner wall of the filter liner (9), a rotating shaft (12) is installed at the center of the inner wall of the filter liner (11), a group of scrapers (14) are evenly distributed along the circumferential direction on the outer wall of the rotating shaft (12), and a scraper (15) is provided on the outer side of the scraper (14), and a connecting base (10) is provided at the bottom of the filter (1), and a backwashing head (19) is installed in the connecting base (10).

2. A scraper-type self-cleaning filter according to claim 1, characterized in that: A sealing cover (2) is installed on the outside of the filter (1), an engine (7) is installed on the top of the sealing cover (2), a filter chamber (8) is provided in the filter (1), and an output end of the engine (7) extends into the filter chamber (8) and is transmitted to a rotating shaft (12).

3. A scraper-type self-cleaning filter according to claim 2, characterized in that: A connecting piece (13) is symmetrically fixed to the outer wall of the rotating shaft (12), one end of the connecting piece (13) is fixed to the scraper 1 (14), and the bottoms of the scraper 1 (14) and the scraper 2 (15) are connected with a connecting rod (16) for support.

4. The scraper-type self-cleaning filter according to claim 1, characterized in that: The filter (1) and the connecting base (10) are connected via a flange, a connecting head (18) is fixed at the center of the connecting base (10), one end of the connecting head (18) extends into the filter chamber (9), and a flushing pipe (5) is fixed to the side wall of the connecting base (10).

5. A scraper-type self-cleaning filter according to claim 4, characterized in that: An extension pipe (17) is installed inside the flushing pipe (5), one end of the extension pipe (17) extends into the connecting head (18) and is fixedly connected to the backwashing head (19), and a sewage pipe (20) is installed at the bottom center of the connecting base (10).

6. The scraper-type self-cleaning filter according to claim 1, characterized in that: A water inlet pipe (3) is fixed to the outer wall of one side of the filter (1); a connecting pipe (6) is connected to the interior of the water inlet pipe (3); one end of the connecting pipe (6) extends into the second filter chamber (11); and a water outlet pipe (4) is fixed to the bottom end of the filter (1) away from the water inlet pipe (3).

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