Reflux filter structure for water treatment system

Abstract

The utility model discloses a reflux filter structure for a water treatment system, which comprises a filter shell arranged in the water treatment system, and further comprises a sealing mechanism for forming an assembled sealing structure, a filtering mechanism for reflowing and filtering a water body, and an antifouling mechanism for preventing dirt from reflowing, the sealing mechanism is assembled at one end of the filter shell, the filtering mechanism is arranged in the filter shell, and the anti-fouling mechanism is arranged between the filtering mechanism and the filter shell. The anti-fouling filter has the beneficial effects that the anti-fouling filter is simple in structure, is provided with the sealing mechanism, adopts split parts to form an assembled sealing structure, and is convenient to assemble and disassemble; all the parts are simple to disassemble and assemble, damaged parts can be disassembled, assembled and maintained, the situation that the whole filter is scrapped due to the fact that the filter part is damaged is avoided, economic benefits are high, the filtering mechanism is arranged to be matched with the anti-fouling mechanism, dirt can be intercepted when the filter element is taken out for cleaning, and water pollution caused by the fact that the dirt flows back along with water is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of return filters, in particular to a return filter structure for a water treatment system. Background Art

[0002] In the prior art, a return filter is usually arranged on the return water pipeline of a system. Its function is to capture the pollutants generated or invaded in the system before returning to the water tank, filter the pollutants in the fluid, keep the fluid flowing back into the container clean, and can repeatedly filter the impurities in the water body through the return method, with better filtering effect, keeping the water body clear, oxygen-rich, free of harmful substances and pollution, and applicable to various water treatment systems. However, the structure of the traditional return filter is fixed, and the disassembly is inconvenient, resulting in non-cleanable filter materials. Although some return filters can be disassembled, when taking out their filter materials for cleaning, most of the dirt will flow back with the water, causing water pollution.

[0003] The Chinese utility model patent with the application number 202321216500.X discloses a return filter structure, belonging to the technical field of filters, including a return filter main body. A sealing top cover is arranged at the upper end of the return filter main body, a wiping assembly is arranged at the upper side edge of the sealing top cover, an observation window is arranged at the corresponding position of the side of the return filter main body and the wiping assembly, a liquid inlet pipe is arranged at the side of the return filter main body, the sealing top cover and the return filter main body are connected through a connecting assembly, a filter element is arranged inside the return filter main body, and a liquid outlet is arranged at the bottom of the return filter main body. However, although the filter element of this kind of return filter structure can be disassembled and replaced, when taking out the filter element for cleaning, most of the dirt will flow back with the water, causing water pollution, and its connection part and the water inlet part are both composed of an integral structure. If a certain part of them is damaged, the whole will be scrapped, and the damaged part cannot be disassembled and repaired, with poor economic benefits. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a return filter structure for a water treatment system.

[0005] To achieve the above purpose, the technical solution proposed by the utility model is:

[0006] A return filter structure for a water treatment system includes a filter housing arranged in the water treatment system, and also includes a sealing mechanism for forming an assembled sealing structure, a filtering mechanism for filtering the return water of the water body, and an anti-pollution mechanism for preventing dirt from flowing back. The sealing mechanism is assembled at one end of the filter housing, the filtering mechanism is arranged inside the filter housing, and the anti-pollution mechanism is configured between the filtering mechanism and the filter housing.

[0007] The sealing mechanism includes a sealing housing, a sealing end cap, and a water inlet end head. The sealing housing is arranged at one end of the filter housing and is sleeved with the filter housing. The sealing end cap is arranged at the end of the sealing housing away from the filter housing and is threadedly connected to the sealing housing. The water inlet end head is arranged in the middle of one side of the sealing housing and penetrates through the sealing housing and is threadedly connected to the sealing housing. The water inlet end head is communicated with the inside of the sealing housing.

[0008] It further includes a sealing gasket and a flange. The sealing gasket is arranged at the connection between the filter housing and the sealing housing. A clamping convex edge is provided inside the sealing housing corresponding to the filter housing. The sealing housing is clamped to the filter housing through the clamping convex edge. The flange is arranged at the end of the sealing housing away from the sealing end cap and is fitted and connected to the sealing housing through a mounting groove. The flange is fixedly connected to the sealing housing through bolts.

[0009] The filtering mechanism includes a filter element main body, a filter element drain port, a filter element end cap, and a crimping assembly. The filter element main body is arranged inside the filter housing and is inserted into the filter housing. The filter element drain port is arranged at the end of the filter element main body away from the sealing end cap and is fixedly connected to the filter element main body. The filter element end cap is arranged at the end of the filter element main body away from the filter element drain port and is fixedly connected to the filter element main body. The crimping assembly is assembled at the end of the filter element end cap away from the filter element main body and is located between the filter element end cap and the sealing end cap.

[0010] The crimping assembly includes a crimping mounting seat, a crimping limiting piece, and a crimping spring. The crimping mounting seat is arranged in the middle of the end of the filter element end cap away from the filter element main body and is fixedly connected to the filter element end cap. The crimping limiting piece is arranged in the middle of the crimping mounting seat and is fitted and connected to the crimping mounting seat. The crimping spring is arranged inside the crimping mounting seat, and one end of it abuts against the crimping mounting seat and the pressing limiting piece. The end of the crimping spring away from the crimping mounting seat abuts against the sealing end cap through a mounting block.

[0011] The crimping limiting piece is arranged as a symmetric wing-shaped limiting structure and there is a gap between the crimping limiting piece and the crimping mounting seat.

[0012] The anti-fouling mechanism includes an anti-fouling mounting seat, an anti-fouling snap ring, and anti-fouling screws. The anti-fouling mounting seat is assembled inside one end of the filter housing close to the sealing end cover, and a part of the anti-fouling mounting seat is located inside the filter housing. The anti-fouling snap ring is arranged inside one end of the anti-fouling mounting seat away from the sealing end cover and is fixedly connected to the anti-fouling mounting seat. There are several groups of anti-fouling screws, and several groups of anti-fouling screws are evenly spaced at the connection between the anti-fouling mounting seat and the filter housing and penetrate through the anti-fouling mounting seat to be threadedly connected to the filter housing.

[0013] The anti-fouling snap ring is of a rubber snap ring structure, and its inner side is provided with a toothed structure corresponding to the filter element body. The toothed structure on the inner side of the anti-fouling snap ring is correspondingly attached to the side of the filter element body.

[0014] It further includes a filtered water outlet, which is arranged at one end of the filter housing away from the sealing end cover and is inserted and connected to the filter housing. A part of the filtered water outlet protrudes from the filter housing, and the filtered water outlet is located inside the drain outlet of the filter element.

[0015] A sealing rubber ring is arranged between the filtered water outlet and the filter housing.

[0016] The beneficial effects of the present utility model are as follows:

[0017] The structure is simple, and a sealing mechanism is provided. It adopts a split-type component to form an assembled sealing structure, and the disassembly and assembly methods of each part are simple. The damaged parts can be disassembled and repaired, avoiding the overall scrapping of the filter due to damage to a part, with high economic benefits. A filtering mechanism is provided in cooperation with the anti-fouling mechanism, which can intercept dirt when the filter element is taken out for cleaning, avoiding water quality pollution caused by the backflow of dirt with water. Description of the Drawings

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is an exploded view of the sealing mechanism and the filter housing of the present utility model;

[0020] Figure 3 is a sectional view of the cooperation between the filtering mechanism and the filter housing of the present utility model;

[0021] Figure 4 is a sectional view of the anti-fouling mechanism of the present utility model.

[0022] In the figure: 1. Filter housing; 2. Sealing sleeve housing; 3. Sealing end cap; 4. Water inlet end; 5. Sealing washer; 6. Flange; 7. Filter element body; 8. Filter element drain port; 9. Filter element end cap; 10. Crimping mounting seat; 11. Crimping limiting piece; 12. Crimping spring; 13. Anti-fouling mounting seat; 14. Anti-fouling snap ring; 15. Anti-fouling screw; 16. Filter water outlet. Detailed implementation manner

[0023] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] A reflux filter structure for a water treatment system includes a filter housing 1, the filter housing 1 is arranged in the water treatment system, and further includes a sealing mechanism for forming an assembled sealing structure, a filtering mechanism for filtering the reflux of water, and an anti-fouling mechanism for preventing the backflow of dirt. The sealing mechanism is assembled at one end of the filter housing 1, the filtering mechanism is arranged inside the filter housing 1, and the anti-fouling mechanism is configured between the filtering mechanism and the filter housing 1. The overall structural schematic diagram of the present utility model is as Figure 1 shown.

[0025] The sealing mechanism includes a sealing sleeve housing 2, a sealing end cap 3, and a water inlet end 4. The sealing sleeve housing 2 is arranged at one end of the filter housing 1 and is sleeved with the filter housing 1. The sealing end cap 3 is arranged at the end of the sealing sleeve housing 2 away from the filter housing 1 and is threadedly connected to the sealing sleeve housing 2. The water inlet end 4 is arranged in the middle of one side of the sealing sleeve housing 2 and penetrates through the sealing sleeve housing 2 and is threadedly connected to the sealing sleeve housing 2. The water inlet end 4 is communicated with the inside of the sealing housing. The sealing mechanism cooperates with the sealing sleeve housing 2, the sealing end cap 3, and the water inlet end 4 to form a detachable sealing structure at the end of the filter housing 1. Among them, the sealing sleeve housing 2 is used as a detachable mounting structure on the filter housing 1 to provide mounting support for the sealing end cap 3. The sealing end cap 3 is used to jointly form a combined sealing structure with the sealing sleeve housing 2 to seal the end of the filter housing 1. The water inlet end 4 is used as a water inlet structure on the sealing sleeve housing 2 to meet the water inlet requirements of the filter. The explosion schematic diagram of the sealing mechanism of the present utility model and the filter housing 1 is as Figure 2 shown.

[0026] It further includes a sealing gasket 5 and a flange 6. The sealing gasket 5 is arranged at the connection between the filter housing 1 and the sealing sleeve housing 2. A clamping flange is provided inside the sealing sleeve housing 2 corresponding to the filter housing 1, and the sealing sleeve housing 2 is clamped to the filter housing 1 through the clamping flange. The flange 6 is arranged at one end of the sealing sleeve housing 2 away from the sealing end cover 3 and is fitted and connected to the sealing sleeve housing 2 through the mounting groove. The flange 6 is fixedly connected to the sealing sleeve housing 2 by bolts. Among them, the sealing gasket 5 is used as the sealing structure at the connection between the filter housing 1 and the sealing sleeve housing 2, so as to improve the connection tightness between the two. The flange 6 is used as the connection structure on the sealing sleeve housing 2, so as to improve the connection stability of the sealing sleeve housing 2 and meet the installation requirements for assembling the filter in the water treatment system.

[0027] The filtering mechanism includes a filter element main body 7, a filter element drain port 8, a filter element end cover 9 and a crimping assembly. The filter element main body 7 is arranged inside the filter housing 1 and is inserted into the filter housing 1. The filter element drain port 8 is arranged at one end of the filter element main body 7 away from the sealing end cover 3 and is fixedly connected to the filter element main body 7. The filter element end cover 9 is arranged at one end of the filter element main body 7 away from the filter element drain port 8 and is fixedly connected to the filter element main body 7. The crimping assembly is assembled at one end of the filter element end cover 9 away from the filter element main body 7 and is located between the filter element end cover 9 and the sealing end cover 3. The filtering mechanism is combined with the filter element main body 7, the filter element drain port 8, the filter element end cover 9 and the crimping assembly to form the filter element structure in the filter to meet the filtering requirements of the water body. Among them, the filter element main body 7 is used as the main part of the filter element structure to meet the filtering requirements of the water body. The filter element drain port 8 is used to drain the filtered water body. The filter element end cover 9 is used as the end cover structure on the filter element main body 7 and provides installation support for the crimping assembly. The crimping assembly is used to press-fit the filtering mechanism to ensure the assembly stability of the filtering mechanism. The cross-sectional view of the cooperation between the filtering mechanism of the present utility model and the filter housing 1 is as Figure 3 shown.

[0028] The crimping assembly includes a crimping mounting seat 10, a crimping limiting piece 11, and a crimping spring 12. The crimping mounting seat 10 is arranged at the middle of one end of the filter element end cover 9 away from the filter element body 7 and is fixedly connected to the filter element end cover 9. The crimping limiting piece 11 is arranged at the middle of the crimping mounting seat 10 and is fitted and connected with the crimping mounting seat 10. The crimping spring 12 is arranged inside the crimping mounting seat 10, and one end of it abuts against the crimping mounting seat 10 and the pressing limiting piece. The end of the crimping spring 12 away from the crimping mounting seat 10 abuts against the sealing end cover 3 through a mounting block. The crimping limiting piece 11 is set as a symmetric airfoil limiting structure, and there is a gap between the crimping limiting piece 11 and the crimping mounting seat 10. The crimping assembly cooperates with the crimping mounting seat 10, the crimping limiting piece 11, and the crimping spring 12 to press-fit the filtering mechanism to ensure the assembly stability of the filtering mechanism. Among them, the crimping mounting seat 10 is used to provide installation support for the crimping limiting piece 11 and the crimping spring 12. The crimping limiting piece 11 is used to provide installation support for the crimping spring 12 to ensure that there is a gap between the crimping spring 12 and the filter element end cover 9. The crimping spring 12 is used to elastically crimp the filter element end cover 9 through the crimping limiting piece 11 and the crimping mounting seat 10 under the action of the sealing end cover 3, so as to ensure the assembly stability of the filtering mechanism. The gap between the crimping limiting piece 11 and the crimping mounting seat 10 can ensure the water inlet flow of the filter.

[0029] The anti-fouling mechanism includes an anti-fouling mounting seat 13, an anti-fouling snap ring 14, and anti-fouling screws 15. The anti-fouling mounting seat 13 is assembled on the inner side of one end of the filter housing 1 close to the sealing end cover 3, and a part of the anti-fouling mounting seat 13 is located inside the filter housing 1. The anti-fouling snap ring 14 is arranged on the inner side of one end of the anti-fouling mounting seat 13 away from the sealing end cover 3 and is fixedly connected to the anti-fouling mounting seat 13. There are several groups of anti-fouling screws 15, and several groups of anti-fouling screws 15 are evenly spaced at the connection between the anti-fouling mounting seat 13 and the filter housing 1 and penetrate through the anti-fouling mounting seat 13 and are threadedly connected to the filter housing 1. The anti-fouling mechanism cooperates with the anti-fouling mounting seat 13, the anti-fouling snap ring 14, and the anti-fouling screws 15 to prevent dirt from flowing back with water when the filter element is taken out, causing water quality pollution. Among them, the anti-fouling mounting seat 13 is used to provide installation support for the anti-fouling snap ring 14 to assemble the anti-fouling snap ring 14 inside the filter housing 1. The anti-fouling snap ring 14 is used to be arranged on the outer side of the filter element body 7 under the action of the anti-fouling mounting seat 13 to scrape off the dirt on the filter element body 7 when the filter element is taken out, avoiding water quality pollution caused by its backflow with water. The anti-fouling screws 15 are used to assemble the anti-fouling mounting seat 13 on the filter housing 1. The cross-sectional view of the anti-fouling mechanism of the present utility model is as Figure 4 shown.

[0030] The anti-fouling snap ring 14 is of a rubber snap ring structure, and the inner side thereof corresponding to the filter element body 7 is provided with a toothed structure. The toothed structure on the inner side of the anti-fouling snap ring 14 is arranged in corresponding fit with the side part of the filter element body 7. Among them, the inner side of the anti-fouling snap ring 14 is provided with a toothed structure to cooperate with the side part of the filter element body 7, and the anti-fouling snap ring 14 adopts a rubber snap ring structure, which can scrape the dirt on the filter element body 7 while effectively avoiding damage to the filter element body 7.

[0031] It further includes a filtered water outlet 16. The filtered water outlet 16 is arranged at one end of the filter housing 1 away from the sealing end cover 3 and is inserted and connected with the filter housing 1. A part of the filtered water outlet 16 protrudes from the filter housing 1. The filtered water outlet 16 is located inside the filter element drain port 8. A sealing rubber ring is arranged between the filtered water outlet 16 and the filter housing 1. Among them, the filtered water outlet 16 is used as the water outlet structure on the filter housing 1 to meet the water outlet requirement of the filter, and the sealing rubber ring is used to effectively improve the sealing performance between the filtered water outlet 16 and the filter housing 1.

[0032] Working principle:

[0033] When in use, the filter is arranged in the water treatment system. The raw water flows into the filter through the water inlet end 4, and then flows into the inside of the filter element body along the filter housing 1. The filter element body filters the water body. The filtered water body is discharged from the filter through the filtered water outlet 16, and thus the filtering operation of the water body can be completed. When the filter element needs to be replaced and cleaned, rotate the sealing end cover 3 to remove the sealing end cover 3 from the sealing sleeve 2, so that the upper end of the filter is opened. Lift the filter element body upward from the inside of the filter housing 1. During the rising process of the filter element body, the anti-fouling snap ring 14 scrapes off the dirt on the filter element body to avoid water quality pollution caused by the dirt flowing back with the water.

[0034] The beneficial effects of the present utility model are that the structure is simple, a sealing mechanism is provided, which adopts a split-type component to form an assembled sealing structure, and the disassembly and assembly methods of each part are simple. The damaged parts can be disassembled and repaired to avoid the whole filter being scrapped due to partial damage, with high economic benefits. A filtering mechanism and an anti-fouling mechanism are provided in cooperation, which can intercept the dirt when the filter element is taken out for cleaning to avoid water quality pollution caused by the dirt flowing back with the water.

[0035] The above has described in detail an embodiment of the present utility model, but the content is only the preferred embodiment of the present utility model and cannot be considered as limiting the implementation scope of the present utility model. All equivalent changes and improvements made according to the scope of the application of the present utility model shall still fall within the scope covered by the patent of the present utility model.

Claims

1. A backflow filter structure for a water treatment system, comprising a filter housing (1), wherein the filter housing (1) is arranged in the water treatment system, and characterized in that: It also includes a sealing mechanism for forming an assembled sealing structure, a filtering mechanism for filtering backflow of water, and an anti-fouling mechanism for preventing backflow of dirt. The sealing mechanism is assembled at one end of the filter housing (1), the filtering mechanism is arranged inside the filter housing (1), and the anti-fouling mechanism is arranged between the filtering mechanism and the filter housing (1).

2. A backflow filter structure for a water treatment system as claimed in claim 1, characterized in that: The sealing mechanism comprises a sealing sleeve (2), a sealing end cover (3) and a water inlet end (4); the sealing sleeve (2) is arranged at one end of the filter housing (1) and is sleeved with the filter housing (1); the sealing end cover (3) is arranged at one end of the sealing sleeve (2) away from the filter housing (1) and is threadedly connected to the sealing sleeve (2); the water inlet end (4) is arranged in the middle of one side of the sealing sleeve (2) and passes through the sealing sleeve (2) and is threadedly connected to the sealing sleeve (2); the water inlet end (4) is communicated with the interior of the sealing sleeve.

3. A reflux filter structure for a water treatment system as claimed in claim 2, characterized in that: The invention also comprises a sealing gasket (5) and a flange (6), wherein the sealing gasket (5) is arranged at the connection between the filter housing (1) and the sealing sleeve (2), the interior of the sealing sleeve (2) is provided with a snap-fitting protrusion corresponding to the filter housing (1), the sealing sleeve (2) is snap-fitted to the filter housing (1) via the snap-fitting protrusion, the flange (6) is arranged at one end of the sealing sleeve (2) away from the sealing end cover (3) and is embedded and connected to the sealing sleeve (2) via a mounting groove, and the flange (6) is fixedly connected to the sealing sleeve (2) via bolts.

4. A reflux filter structure for a water treatment system as claimed in claim 3, characterized in that: The filter mechanism comprises a filter element body (7), a filter element drainage port (8), a filter element end cover (9) and a crimping assembly, wherein the filter element body (7) is arranged inside the filter housing (1) and inserted into the filter housing (1), the filter element drainage port (8) is arranged at one end of the filter element body (7) away from the sealing end cover (3) and is fixedly connected to the filter element body (7), the filter element end cover (9) is arranged at one end of the filter element body (7) away from the filter element drainage port (8) and is fixedly connected to the filter element body (7), and the crimping assembly is assembled at one end of the filter element end cover (9) away from the filter element body (7) and is located between the filter element end cover (9) and the sealing end cover (3).

5. A backflow filter structure for a water treatment system as claimed in claim 4, characterized in that: The crimping assembly comprises a crimping mounting seat (10), a crimping limiting plate (11) and a crimping spring (12); the crimping mounting seat (10) is arranged at the middle of one end of the filter element end cover (9) away from the filter element body (7) and is fixedly connected to the filter element end cover (9); the crimping limiting plate (11) is arranged at the middle of the crimping mounting seat (10) and is embedded and connected to the crimping mounting seat (10); the crimping spring (12) is arranged on the inner side of the crimping mounting seat (10) and one end thereof abuts against the crimping mounting seat (10) and the crimping limiting plate; the end of the crimping spring (12) away from the crimping mounting seat (10) abuts against the sealing end cover (3) through a mounting block.

6. A backflow filter structure for a water treatment system as claimed in claim 5, characterized in that: The crimping limiting piece (11) is configured as a symmetrical wing-shaped limiting structure and a spacing is left between the crimping limiting piece (11) and the crimping mounting seat (10).

7. A backflow filter structure for a water treatment system as claimed in claim 6, characterized in that: The anti-fouling mechanism comprises an anti-fouling mounting seat (13), an anti-fouling snap ring (14) and an anti-fouling screw (15); the anti-fouling mounting seat (13) is mounted on the inner side of one end of the filter housing (1) close to the sealing end cover (3) and a portion of the anti-fouling mounting seat (13) is located on the inner side of the filter housing (1); the anti-fouling snap ring (14) is arranged on the inner side of one end of the anti-fouling mounting seat (13) away from the sealing end cover (3) and is fixedly connected to the anti-fouling mounting seat (13); and a plurality of groups of the anti-fouling screws (15) are arranged evenly spaced at the connection between the anti-fouling mounting seat (13) and the filter housing (1) and penetrate the anti-fouling mounting seat (13) and are threadedly connected to the filter housing (1).

8. A backflow filter structure for a water treatment system as claimed in claim 7, characterized in that: The anti-fouling clamp ring (14) is a rubber clamp ring structure and its inner side is provided with a tooth-shaped structure corresponding to the filter element main body (7); the tooth-shaped structure on the inner side of the anti-fouling clamp ring (14) is provided in a correspondingly fitted manner with the side of the filter element main body (7).

9. A backflow filter structure for a water treatment system as claimed in claim 8, characterized in that: The filter further comprises a filter water outlet (16), the filter water outlet (16) being arranged at an end of the filter housing (1) away from the sealing end cover (3) and being plug-connected to the filter housing (1), a portion of the filter water outlet (16) protruding from the filter housing (1), and the filter water outlet (16) being located on the inner side of the filter element drain port (8).

10. A backflow filter structure for a water treatment system as claimed in claim 9, characterized in that: A sealing rubber ring is arranged between the filtered water outlet (16) and the filter housing (1).

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