Lifting type backwashing filter

Abstract

The utility model discloses a lifting type backwashing filter, and relates to the technical field of filters. The device comprises a barrel, a barrel cover is arranged at the top of the barrel, a filter barrel is coaxially arranged on the inner bottom wall of the barrel cover, the bottom end of the filter barrel is in lap joint with the inner bottom wall of the barrel, the upper end and the lower end of the barrel are communicated with a water inlet pipe and a blow-off pipe respectively, and the filter barrel is communicated with a drainage pipe with the end extending out of the barrel; the water spraying part is arranged in the filter cartridge in a sliding manner, the water spraying part comprises two circular plates which are distributed up and down, a plurality of stand columns are connected between the two circular plates in an array manner, and the bottom of the circular plate positioned at the lower part is communicated with a backwashing hose; the backwashing hose and the backwashing hard pipe form a backwashing pipeline, the two discs form a backwashing spray head, and the backwashing spray head formed by the two discs is driven by the lifting part to lift along the interior of the filter cartridge, so that the filter cartridge is subjected to point-to-point washing and is gradually and upwards washed in sequence, the filter cartridge is effectively subjected to backwashing, and the backwashing efficiency of the filter cartridge is improved. And the practicability is improved.

Description

Technical Field

[0001] The present application relates to the technical field of filters, and in particular to a lifting backwash filter. Background Art

[0002] A backwash filter is a filter that uses backwashing liquid to backwash the filter screen inside the filter. The flow direction of the backwashing liquid is opposite to the flow direction during filtration, so it is called a backwashing filter. The backwashing liquid can be the clear liquid after filtration or an external cleaning liquid. The filter screen is flushed by the flow of backwashing liquid to wash away the impurity particles from the filter screen.

[0003] Some existing vertical cylindrical backwash filters have certain shortcomings in use. Since the filter cartridge is vertically arranged and has a certain height, and since there are filter holes around the filter cartridge, when backwashing is performed, the water pressure in the lower part is greater, while the water pressure in the upper part is smaller, resulting in poor flushing effect on the upper half of the filter cartridge. Therefore, the present application proposes a lifting backwash filter. Utility Model Content

[0004] The purpose of the present application is to provide a lifting backwash filter to solve the problem that when the existing filter is backwashed, the water pressure in the upper area is relatively low, resulting in poor backwashing effect on the filter cartridge.

[0005] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0006] Lift-type backwash filter, including:

[0007] The cylinder body has a cylinder cover on the top, a filter cylinder is coaxially arranged on the inner bottom wall of the cylinder cover, the bottom end of the filter cylinder overlaps the inner bottom wall of the cylinder body, the upper and lower ends of the cylinder body are respectively connected with a water inlet pipe and a sewage pipe, and the filter cylinder is connected with a drainage pipe whose end extends outside the cylinder body;

[0008] A water spraying member is slidably arranged in the filter cartridge, the water spraying member comprises two circular plates distributed up and down, a plurality of columns are connected in an array between the two circular plates, a backwashing hose is connected to the bottom of the circular plate located at the bottom, and a backwashing hose is connected to a backwashing hard pipe whose end extends outside the cartridge;

[0009] The lifting member is arranged in the cylinder and is used for driving the circular plate to rise and fall by means of water pressure.

[0010] Furthermore, the lifting member includes a corrugated hose, one end of which is connected to the circular plate located below, and the other end of which is connected to a conveying pipe whose end extends outside the cylinder.

[0011] Furthermore, a sleeve is coaxially arranged on the inner bottom wall of the cylinder, and the bottom end of the filter cartridge is plug-fitted with the top end of the sleeve.

[0012] Furthermore, the bottom of the cylinder is in a conical structure, the sewage pipe is connected to the tip of the cone, and the sleeve is suspended in the cylinder by a support rod.

[0013] Further, the backwash hose spirally surrounds the corrugated hose.

[0014] Furthermore, a counterweight ring is provided at the bottom of the circular plate located below.

[0015] Furthermore, a scraping and brushing member is rotatably sleeved on the filter cartridge, and is used to rotatably scrape and brush the outer surface of the filter cartridge with the aid of the conveying water flow of the water inlet pipe or the backwashing water flow.

[0016] Furthermore, the scraping and brushing member comprises two sleeves rotatably sleeved on the outer surface of the filter cartridge, a plurality of spiral scraping blades distributed in a ring shape are connected between the two sleeves, and the inner edges of the spiral scraping blades overlap with the outer surface of the filter cartridge.

[0017] The beneficial effects of this application are as follows:

[0018] 1. In the present application, a backwash hose and a backwash hard pipe form a backwash pipeline, and two discs form a backwash nozzle. The backwash nozzle formed by the two discs is driven by a lifting member to move up and down inside the filter cartridge, so that the filter cartridge is flushed point by point and flushed upward step by step, thereby effectively backwashing the filter cartridge, thereby improving practicality.

[0019] 2. In the present application, the delivery pipe and the corrugated hose constitute a lifting member, which continuously delivers water and utilizes the water pressure to drive the backwash nozzle formed by the two discs to rise and fall, thereby achieving comprehensive backwashing of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural diagram of this application;

[0021] Figure 2 It is a sectional view of the three-dimensional structure of the present application;

[0022] Figure 3 It is a three-dimensional structural diagram of part of this application;

[0023] Figure 4 This application Figure 2 Enlarged view of point A in the middle;

[0024] Figure numerals: 1, cylinder body; 2, cylinder cover; 3, filter cylinder; 4, water inlet pipe; 5, sewage pipe; 6, drainage pipe; 7, water spraying part; 8, lifting part; 9, sleeve; 10, support rod; 11, scraping and brushing part; 12, counterweight ring; 701, round plate; 702, column; 703, backwashing hose; 704, backwashing hard pipe; 801, corrugated hose; 802, delivery pipe; 1101, collar; 1102, spiral scraper. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0026] like Figure 1-Figure 4 As shown, a lifting backwash filter proposed in one embodiment of the present application includes:

[0027] The cylinder 1 is provided with a cylinder cover 2 on the top, and a filter cylinder 3 is coaxially provided on the inner bottom wall of the cylinder cover 2. The bottom end of the filter cylinder 3 overlaps the inner bottom wall of the cylinder 1. The upper and lower ends of the cylinder 1 are respectively connected with a water inlet pipe 4 and a sewage pipe 5. The filter cylinder 3 is connected with a drainage pipe 6 whose end extends to the outside of the cylinder 1. When normal filtration is performed, water is transported from the water inlet pipe 4 to the cylinder 1, and clean water is filtered through the filter cylinder 3 and circulated into the filter cylinder 3, and then discharged through the drainage pipe 6, while impurities contained in the water are intercepted outside the filter cylinder 3 and finally discharged through the drainage pipe 6. Preferably, valves are provided on the water inlet pipe 4, the sewage pipe 5 and the drainage pipe 6. During normal filtration, the valve on the sewage pipe 5 is closed, and the valve thereon is opened when sewage is discharged;

[0028] The water spraying member 7 is slidably arranged in the filter cartridge 3. The water spraying member 7 includes two circular plates 701 distributed up and down. A plurality of columns 702 are connected in an array between the two circular plates 701. A backwashing hose 703 is connected to the bottom of the circular plate 701 located at the bottom. The free end of the backwashing hose 703 is connected to a backwashing hard pipe 704 whose end extends to the outside of the cylinder body 1. By arranging the columns 702 between the two circular plates 701, a cavity is formed between the two circular plates 701. When backwashing is performed, the flushing liquid or clean water passes through the cavity. The water is transported to the backwash hose 703 through the backwash hard pipe 704, and then transported to the compartment formed between the two circular plates 701. The water flow then flushes the cylinder wall of the filter cartridge 3 corresponding to the position of the compartment. Since the two circular plates 701 are slidably arranged in the filter cartridge 3, the cylinder wall of the filter cartridge 3 can be flushed in turn by lifting and lowering the sliding circular plates 701. The flushing liquid flushes from the inside of the filter cartridge 3 to the outside, thereby achieving the backwashing effect. Preferably, a valve is provided on the backwash hard pipe 704, which is opened only during backwashing.

[0029] The lifting member 8 is arranged in the cylinder body 1, and is used for driving the circular plate 701 to rise and fall with the help of water pressure. The lifting member 8 drives the circular plate 701 to rise and fall, so that the filter cylinder 3 is not backwashed all at once during flushing, but its cylinder wall is flushed step by step in the process of lifting and lowering. Even if the filter cylinder 3 has a certain height, during the gradual flushing, the water pressure at each height position is ensured to be stable, so that the inner wall of the filter cylinder 3 is effectively flushed, thereby ensuring the backwashing effect.

[0030] like Figure 2 and Figure 4 As shown, in some embodiments, the lifting member 8 includes a corrugated hose 801, one end of which is connected to the circular plate 701 located below, and the other end is connected to a delivery pipe 802 with an end extending to the outside of the cylinder 1. When backwashing is performed, water is first delivered to the corrugated hose 801 through the delivery pipe 802. As the water is continuously delivered, the corrugated hose 801 drives the circular plate 701 to rise and fall, and cooperates with the water spraying member 7 to achieve the effect of sequential and gradual flushing. When the backwashing is completed, the water in the corrugated hose 801 is discharged, and the circular plate 701 moves down and resets under the action of gravity, thereby not affecting the normal filtration of the filter cartridge 3.

[0031] like Figure 4 As shown, in some embodiments, a sleeve 9 is coaxially arranged on the inner bottom wall of the cylinder 1, and the bottom end of the filter cartridge 3 is plugged into the top end of the sleeve 9. Preferably, it should be noted that the circular plate 701, the corrugated hose 801 and the backwash hose 703 are all movably arranged in the sleeve 9. When backwashing is not performed, the circular plate 701, the corrugated hose 801 and the backwash hose 703 are all accommodated in the sleeve 9, so that they do not occupy the position in the filter cartridge 3, thereby improving practicality.

[0032] like Figure 2 As shown, in some embodiments, the bottom of the cylinder 1 is conical in structure, the sewage pipe 5 is connected to the tip of the cone, and the sleeve 9 is suspended in the cylinder 1 by the support rod 10. By making the bottom of the cylinder 1 conical and suspending the sleeve 9 by the support rod 10, a sediment chamber is provided between the sleeve 9 and the bottom of the cylinder 1, which can not only temporarily store the intercepted impurities, but also facilitate the discharge of the impurities through the sewage pipe 5.

[0033] like Figure 4 As shown, in some embodiments, the backwash hose 703 is spirally wrapped around the corrugated hose 801. By spirally wrapping the backwash hose 703 around the corrugated hose 801, when the circular plate 701 is raised or lowered, the backwash hose 703 is easy to follow the pulling and is not easy to be entangled or knotted. At the same time, when the circular plate 701 descends, the backwash hose 703 is also easy to coil and roll up, thereby reducing the occupied space, so that the water spray component 7 can be effectively stored in the sleeve 9.

[0034] like Figure 4As shown, in some embodiments, a counterweight ring 12 is provided at the bottom of the circular plate 701 located below. Since the outer edge of the circular plate 701 overlaps the inner wall of the filter cartridge 3, the circular plate 701 has a certain friction resistance when sliding therein. The counterweight ring 12 is provided, and the counterweight ring 12 can be made of stainless steel metal, so that the circular plate 701 can slide downward and reset more smoothly and stably.

[0035] like Figure 2 As shown, in some embodiments, a scraper 11 is rotatably sleeved on the filter cartridge 3, which is used to rotatably scrape and brush the outer surface of the filter cartridge 3 with the help of the water flow delivered by the water inlet pipe 4 or the water flow of backwashing. By rotatably setting the scraper 11 on the filter cartridge 3, during normal filtration, the water delivered by the water inlet pipe 4 drives the scraper 11 to rotate, thereby scraping and brushing the outer surface of the filter cartridge 3, which can effectively reduce the attachment of impurities to the surface of the filter cartridge 3 and improve the filtration effect. At the same time, during backwashing, the backwashing liquid is used to drive the scraper 11 to rotate, thereby scraping and brushing the outer surface of the filter cartridge 3, which can effectively separate the impurities by scraping and brushing, thereby improving the backwashing effect.

[0036] like Figure 3 As shown, in some embodiments, the scraper 11 includes two rings 1101 rotatably sleeved on the outer surface of the filter cartridge 3, and a plurality of spiral scrapers 1102 distributed in a ring are connected between the two rings 1101. The inner edges of the spiral scrapers 1102 overlap the outer surface of the filter cartridge 3. When the water inlet pipe 4 transports water into the cylinder body 1, the water flow will impact the spiral scrapers 1102, thereby driving the two rings 1101 to rotate, so that the plurality of spiral scrapers 1102 scrape the outer surface of the filter cartridge 3. When backwashing is performed, the backwashing liquid will also impact the spiral scrapers 1102 when flushing from the inside of the filter cartridge 3 to the outside, so that the plurality of spiral scrapers 1102 scrape the outer surface of the filter cartridge 3, so as to scrape off the intercepted impurities.

[0037] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. Lifting backwash filter, characterized in that: include: A cylinder (1) is provided with a cylinder cover (2) on the top thereof, a filter cylinder (3) is coaxially provided on the inner bottom wall of the cylinder cover (2), the bottom end of the filter cylinder (3) overlaps the inner bottom wall of the cylinder (1), the upper and lower ends of the cylinder (1) are respectively connected to a water inlet pipe (4) and a sewage discharge pipe (5), and the filter cylinder (3) is connected to a drainage pipe (6) whose end extends to the outside of the cylinder (1); A water spraying member (7) is slidably arranged in the filter cartridge (3), the water spraying member (7) comprising two circular plates (701) distributed up and down, a plurality of columns (702) are connected in an array between the two circular plates (701), the bottom of the circular plate (701) located at the bottom is connected to a backwashing hose (703), and the free end of the backwashing hose (703) is connected to a backwashing hard pipe (704) whose end extends to the outside of the cartridge (1); The lifting member (8) is arranged in the cylinder (1) and is used to drive the circular plate (701) to rise and fall by means of water pressure.

2. The lifting backwash filter according to claim 1, characterized in that: The lifting member (8) comprises a corrugated hose (801), one end of which is connected to the circular plate (701) located below, and the other end of which is connected to a delivery pipe (802) whose end extends outside the cylinder (1).

3. The lifting backwash filter according to claim 1, characterized in that: A sleeve (9) is coaxially arranged on the inner bottom wall of the cylinder (1), and the bottom end of the filter cylinder (3) is plugged into and matched with the top end of the sleeve (9).

4. The lifting backwash filter according to claim 3, characterized in that: The bottom of the cylinder (1) is in a conical structure, the sewage discharge pipe (5) is connected to the tip of the cone, and the sleeve (9) is suspended in the cylinder (1) via a support rod (10).

5. The lifting backwash filter according to claim 2, characterized in that: The backwash hose (703) spirally surrounds the corrugated hose (801).

6. The lifting backwash filter according to claim 1, characterized in that: A counterweight ring (12) is provided at the bottom of the circular plate (701) located at the bottom.

7. The lifting backwash filter according to claim 1, characterized in that: The filter cartridge (3) is rotatably sleeved with a scraping member (11) for rotatably scraping the outer surface of the filter cartridge (3) with the aid of a conveying water flow or a backwashing water flow from a water inlet pipe (4).

8. The lifting backwash filter according to claim 7, characterized in that: The scraping member (11) comprises two sleeves (1101) rotatably sleeved on the outer surface of the filter cartridge (3), a plurality of spiral scraping blades (1102) distributed in an annular shape are connected between the two sleeves (1101), and the inner edges of the spiral scraping blades (1102) overlap the outer surface of the filter cartridge (3).

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