Switchable filter tank

Abstract

The utility model discloses a switchable filter tank, and belongs to the field of sewage treatment.The filter tank comprises a box body, a primary tank, a filter tank, a clean water tank and a reservoir are formed in the box body in the sewage flowing direction, water tanks communicated with the primary tank and the filter tank are symmetrically arranged on the box body, and a filter structure is arranged in the filter tank; a backwashing structure is arranged in the filter tank corresponding to the lower end of the filter structure; a filtering mechanism used for filtering sewage flowing back into the primary tank from the filtering tank is arranged in the water tank, the filtering mechanism comprises a filtering box fixedly mounted on the water tank and communicated with the water tank and a filtering net inserted into the filtering box, and a through groove communicated with the water tank is formed in the end, away from the primary tank, of the filtering net. The filtering mechanism is arranged in the water tank, so that floating objects in sewage flowing back to the primary tank from the filtering tank are effectively intercepted, the phenomenon that the floating objects enter the filtering tank again to cause pipeline blockage is avoided, and the filtering efficiency of the whole filtering tank is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, and particularly relates to a switchable filter tank. BACKGROUND

[0002] The switchable filter tank is a device widely used in the water treatment field, which realizes effective purification of water quality by switching different filter structures. In the normal working state, water flows through the filter structure inside the filter tank for filtration, so as to remove suspended solids, impurities and the like in the water.

[0003] With the increase of use time, the filter structure will be gradually clogged, resulting in a decrease in filtration efficiency. In order to solve this problem, the existing switchable filter tank is usually designed with a backwashing function. By switching the water flow direction, the filter structure is backwashed by using high-pressure water flow, so as to remove impurities and suspended solids clogged in the filter holes.

[0004] However, the floating objects washed from the filter structure are easy to backflow to the inside of the primary tank through the water tank. The primary tank is a pre-treatment unit of the filter tank, and its main function is to receive and pre-treat the water flow entering the filter tank. When these washed floating objects backflow to the primary tank, they may again enter the inside of the filter tank with the water flow, and then cause clogging of the filter holes again.

[0005] Therefore, the present application provides a switchable filter tank to solve the above problems. CONTENT OF THE UTILITY MODEL

[0006] The present application provides a switchable filter tank, which aims to solve the problems such as the lack of a filtering mechanism for filtering the floating objects in the sewage backflowing from the filter tank to the inside of the primary tank in the existing water tank.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: a switchable filter tank, comprising a box body, a primary tank, a filter tank, a clean water tank and a water storage tank are respectively arranged on the box body along the sewage flow direction, water tanks communicating with the primary tank and the filter tank are symmetrically arranged on the box body, a filter structure is arranged in the inside of the filter tank, and a backwashing structure is arranged in the inside of the filter tank corresponding to the lower end of the filter structure.

[0008] In order to facilitate the sewage from the filter tank backflow to the primary tank for filtering, the inside of the sink is provided with a filtering mechanism for filtering the sewage from the filter tank backflow to the primary tank, the filtering mechanism comprises a filter box fixedly installed on the sink and communicated with the sink and a filter screen inserted in the filter box, and the filter screen is provided with a through groove communicated with the sink at the end away from the primary tank. When backwashing the filtering structure, the backwashing structure extrudes the water flow in the water storage tank to the filter tank through the clean water tank. Under the action of air pressure, the water flow reversely flows through the filtering structure to wash the blocked filter holes. When the water flow in the filter tank flows into the sink, the filter screen filters the floating matter in the water flow. The filtered water flow backflows to the primary tank through the sink, and the floating matter is intercepted on the filter screen.

[0009] Preferably, in order to facilitate the filter screen to be taken out of the filter box, the upper end of the filter screen is fixedly connected with a lifting handle. The lifting handle facilitates the filter screen to be taken out of the filter box for cleaning.

[0010] Preferably, a through hole is formed below the filtering structure between the filter tank and the clean water tank, the clean water tank is communicated with the water storage tank through a first pipeline, and a first valve is fixedly installed on the first pipeline. The through hole facilitates the water filtered by the filtering structure in the filter tank to be discharged into the clean water tank, and the first pipeline facilitates the water in the clean water tank to be discharged into the water storage tank.

[0011] Preferably, the filtering structure comprises a filter plate arranged in the filter tank, a supporting layer arranged at the upper end of the filter plate, and a nitrification filler layer arranged at the upper end of the supporting layer. The combination of the filter plate, the supporting layer and the nitrification filler layer realizes efficient filtering and treatment of the sewage. This structure can effectively remove organic matter, suspended matter and microorganisms and other pollutants in water, and improve the water quality.

[0012] Preferably, the backwashing structure comprises an aeration nozzle arranged below the filtering structure in the filter tank and an aerator fixedly installed on the box body and communicated with the aeration nozzle. The cooperation of the aeration nozzle and the aerator can form strong air flow disturbance, effectively flush away the dirt and blockage on the filtering structure, and improve the backwashing efficiency.

[0013] Preferably, the backwashing structure further comprises a water pump fixedly installed on the box body, an input end of the water pump is communicated with the water storage tank, an output end of the water pump is fixedly connected with a second pipeline communicated with the first pipeline, and a second valve is fixedly installed on the second pipeline. The design of the water pump enables the water in the water storage tank to be recycled during backwashing, which saves water resources and reduces energy consumption.

[0014] This application effectively intercepts floating debris in the wastewater returning from the filtration tank to the primary tank by installing a filtration mechanism inside the tank, preventing these floating debris from re-entering the filtration tank and causing pipe blockage. The presence of the filtration mechanism makes the wastewater returning to the primary tank clearer, reducing the filtration load on the primary tank and thus improving the overall filtration efficiency of the filtration system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a switchable filter.

[0016] Figure 2 for Figure 1 Schematic diagram of the internal structure of the middle box;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure of the middle filter screen;

[0018] Figure 4 for Figure 3 A schematic diagram of the other side of the middle filter structure.

[0019] In the picture:

[0020] 1. Container; 11. Primary tank; 12. Filter tank; 13. Clear water tank; 14. Storage tank; 2. Water tank; 3. Filtration structure; 31. Filter plate; 32. Support layer; 33. Nitrification packing layer; 4. Backwashing structure; 41. Aeration nozzle; 42. Aerator; 43. Water pump; 431. Second pipeline; 432. Second valve; 5. Filtration mechanism; 51. Filter box; 52. Filter screen; 521. Through groove; 522. Handle; 6. First pipeline; 61. First valve. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] This embodiment provides a switchable filter, such as... Figures 1-4 As shown, the filter includes a box 1. A primary tank 11, a filter tank 12, a clear water tank 13 and a water storage tank 14 are respectively opened on the box 1 along the sewage flow direction. A water tank 2 connected to the primary tank 11 and the filter tank 12 is symmetrically arranged on the box 1. A filter structure 3 is provided inside the filter tank 12. A backwashing structure 4 is provided inside the filter tank 12 corresponding to the lower end of the filter structure 3.

[0023] In order to facilitate the filtration of the sewage flowing back from the filter tank 12 to the primary tank 11, the inside of the water tank 2 is provided with a filtering mechanism 5 for filtering the sewage flowing back from the filter tank 12 to the primary tank 11, the filtering mechanism 5 comprising a filter box 51 fixedly installed on the water tank 2 and communicating with the water tank 2, and a filter screen 52 inserted in the filter box 51, the filter screen 52 being provided with a through groove 521 communicating with the water tank 2 at an end away from the primary tank 11. When backwashing the filtering structure 3, the backwashing structure 4 extrudes the water in the water storage tank 14 to the filter tank 12 through the clean water tank 13. Under the action of air pressure, the water flows reversely through the filtering structure 3, washing the blocked filter holes. As the water in the filter tank 12 flows into the water tank 2, the filter screen 52 filters the floating objects in the water. The filtered water flows back to the primary tank 11 through the water tank 2, while the floating objects are intercepted on the filter screen 52. By arranging the filtering mechanism 5 in the water tank 2, the floating objects in the sewage flowing back from the filter tank 12 to the primary tank 11 are effectively intercepted, avoiding the phenomenon that these floating objects enter the filter tank 12 again to cause pipeline blockage. The presence of the filtering mechanism 5 makes the sewage flowing back to the primary tank 11 more clear, reduces the filtering burden of the primary tank 11, and thus improves the filtering efficiency of the entire filter tank.

[0024] Specifically, in order to facilitate the removal of the filter screen 52 from the filter box 51, the upper end of the filter screen 52 is fixedly connected with a handle 522. The handle 522 facilitates the removal of the filter screen 52 from the filter box 51 for cleaning treatment.

[0025] Specifically, a through hole is formed between the filter tank 12 and the clean water tank 13 below the filtering structure 3, the clean water tank 13 and the water storage tank 14 are communicated through the first pipeline 6, and the first pipeline 6 is fixedly installed with a first valve 61. The through hole facilitates the discharge of the water filtered by the filtering structure 3 in the filter tank 12 to the clean water tank 13, and the first pipeline 6 facilitates the discharge of the water in the clean water tank 13 to the water storage tank 14. The addition of the first pipeline 6 and the first valve 61 enables the user to more flexibly control the water flow direction, achieving precise control of the water flow state in the filter tank.

[0026] Specifically, the filter structure 3 includes a filter plate 31 arranged inside the filter tank 12, a supporting layer 32 arranged at the upper end of the filter plate 31, and a nitrification filler layer 33 arranged at the upper end of the supporting layer 32. By adopting the filter structure 3 combining the filter plate 31, the supporting layer 32, and the nitrification filler layer 33, efficient filtration and treatment of sewage are achieved. This structure can effectively remove organic matter, suspended solids, and microorganisms and other pollutants in water, improving the quality of the effluent. The nitrification filler layer 33 provides a good growth environment for microorganisms, promoting the formation and stability of the biofilm. It improves the microorganism's ability to degrade organic matter and enhances the biological treatment capacity of the filter tank. The design of the supporting layer 32 can effectively prevent the nitrification filler layer 33 from shifting or clogging during the filtration process, ensuring the stability and reliability of the filter structure 3. During the filtration process, sewage first enters the filter tank 12, and in the nitrification filler layer 33, microorganisms will grow and reproduce using organic matter, while decomposing and converting organic matter into harmless substances. After treatment by the nitrification filler layer 33, the water quality is significantly improved, and finally, the clear water flows through the through hole into the clear water tank 13 for subsequent use or discharge.

[0027] Specifically, the backwashing structure 4 includes an aeration nozzle 41 arranged inside the filter tank 12 below the filter structure 3 and an aerator 42 fixedly installed on the box body 1 and communicating with the aeration nozzle 41. The backwashing structure 4 also includes a water pump 43 fixedly installed on the box body 1, the input end of the water pump 43 communicating with the water storage tank 14, and the output end of the water pump 43 fixedly connected with a second pipeline 431 communicating with the first pipeline 6, and a second valve 432 fixedly installed on the second pipeline 431. Through the cooperation of the aeration nozzle 41 and the aerator 42, a strong air flow disturbance can be formed to effectively flush away the dirt and blockage on the filter structure 3, improving the backwashing efficiency. The design of the water pump 43 allows the water in the water storage tank 14 to be recycled during backwashing, saving water resources and reducing energy consumption. During backwashing, first, close the first valve 61 to ensure that the first pipeline 6 between the clear water tank 13 and the water storage tank 14 is in a closed state. Then, open the second valve 432 and start the water pump 43 to pump the water in the water storage tank 14 into the filter tank 12 through the second pipeline 431. At the same time, start the aerator 42 to inject air flow into the filter structure 3 through the aeration nozzle 41. Under the joint action of air flow and water flow, a strong disturbance is formed to effectively flush away the dirt and blockage on the filter structure 3. After backwashing, close the second valve 432 and the water pump 43, and open the first valve 61 to make the water in the clear water tank 13 flow back into the water storage tank 14 for subsequent use.

[0028] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and concept of the present application, can make equivalent replacements or changes within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A switchable filter tank, comprising a tank (1), a primary tank (11), a filter tank (12), a clean water tank (13) and a storage tank (14) are formed on the tank (1) along the sewage flow direction, water grooves (2) in communication with the primary tank (11) and the filter tank (12) are symmetrically arranged on the tank (1), a filter structure (3) is arranged in the filter tank (12), and a backwashing structure (4) is arranged in the filter tank (12) corresponding to the lower end of the filter structure (3); characterized in that A filter mechanism (5) for filtering the sewage flowing back from the filter tank (12) to the primary tank (11) is arranged in the water groove (2), the filter mechanism (5) comprises a filter box (51) fixedly installed on the water groove (2) and in communication with the water groove (2), and a filter screen (52) inserted in the filter box (51), and a through groove (521) in communication with the water groove (2) is formed at the end of the filter screen (52) away from the primary tank (11).

2. The switchable filter according to claim 1, characterized in that: A handle (522) is fixedly connected to the upper end of the filter screen (52).

3. The switchable filter according to claim 1, wherein: A through hole is formed between the filter tank (12) and the clean water tank (13) corresponding to the lower part of the filter structure (3), the clean water tank (13) and the storage tank (14) are in communication through a first pipeline (6), and a first valve (61) is fixedly installed on the first pipeline (6).

4. The switchable filter of claim 1, wherein: The filter structure (3) comprises a filter plate (31) arranged in the filter tank (12), a supporting layer (32) arranged at the upper end of the filter plate (31), and a nitrification filler layer (33) arranged at the upper end of the supporting layer (32).

5. The switchable filter of claim 1, wherein: The backwashing structure (4) comprises an aeration nozzle (41) arranged in the filter tank (12) corresponding to the lower part of the filter structure (3), and an aerator (42) fixedly installed on the tank (1) and in communication with the aeration nozzle (41).

6. The switchable filter of claim 1, wherein: The backwashing structure (4) further comprises a water pump (43) fixedly installed on the tank (1), the input end of the water pump (43) is in communication with the storage tank (14), the output end of the water pump (43) is fixedly connected with a second pipeline (431) in communication with the first pipeline (6), and a second valve (432) is fixedly installed on the second pipeline (431).

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