Filtering device for water supply and drainage

Abstract

A filtering device for water supply and drainage comprises a water inlet pipe and a water outlet pipe, an outer filtering box is connected between the water inlet pipe and the water outlet pipe in a communicating mode, an inner filtering box is movably arranged in the outer filtering box, and the inner filtering box can be taken out of the outer filtering box; the inner filter box is respectively communicated with the water inlet pipe and the water outlet pipe, and a primary filter device is arranged in the inner filter box; water flow enters the inner filter box through the water inlet pipe, is filtered by the primary filter device of the inner filter box and then enters the water outlet pipe; a filter screen is detachably arranged in the water outlet pipe and can conduct secondary filtration on water flowing through the water outlet pipe. The inner filter box and the filter screen can be taken out to be cleaned or replaced, so that blockage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of filter devices, in particular to a filter device for water supply and drainage. Background Art

[0002] In water supply and drainage projects, water supply and wastewater discharge are carried out through the arranged water pipelines. The filter is an indispensable device on the water pipeline. It is usually installed at the inlet end of the pressure reducing valve, pressure relief valve, water level valve or other equipment. The filter consists of a cylinder, a stainless steel filter screen, a sewage discharge part, a transmission device and an electrical control part. After the water to be treated passes through the filter cartridge of the filter screen, its impurities are blocked.

[0003] The current filtering device for water supply and drainage, as described in the patent with announcement number CN219840191U, is a main pipe, both ends of which are fixedly connected with connection plates, one end of the connection plate is provided with a filter pipe, and both ends of the filter pipe are provided with flanges. The patent provides an impurity collection structure, a collection box is fixedly connected to the lower end of the main pipe, and impurities inside the pipeline will fall into the collection box through the action of the baffle, a box cover is provided at the lower end of the collection box, and the box cover and the collection box are connected by screws, and an observation window is provided on one side of the collection box. The observation window is made of transparent resin material, and the product made of this material has the same transparency as glass, so that the user can see the impurities inside the collection box from the outside. When the internal impurities are large, the box cover can be disassembled by screws to clean the internal impurities, so that the impurities will not accumulate inside the pipe and cause the pipe to be blocked.

[0004] However, after a long period of filtration, the filter material of the filter device with the above structure needs to be cleaned or replaced to prevent the filter device from being blocked. However, the baffle and the filter screen in the device are not removable and cannot be cleaned or replaced, which will cause the filter device to be blocked and affect pipeline drainage. Utility Model Content

[0005] The utility model aims to provide a filtering device for water supply and drainage, which solves the problem of pipeline blockage by arranging an outer filtering box and a detachable filtering screen so that the filtering screen can be cleaned or replaced.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A filter device for water supply and drainage, comprising a water inlet pipe and a water outlet pipe, an outer filter box is conductively connected between the water inlet pipe and the water outlet pipe, an inner filter box is movably arranged in the outer filter box, and the inner filter box can be taken out of the outer filter box; the inner filter box is respectively connected to the water inlet pipe and the water outlet pipe, and a primary filter device is arranged in the inner filter box; water flows into the inner filter box through the water inlet pipe, and enters the water outlet pipe after being filtered by the primary filter device of the inner filter box;

[0008] A filter screen is detachably provided in the water outlet pipe, and the filter screen can perform secondary filtration on the water flowing through the water outlet pipe.

[0009] Preferably, a water inlet is provided at the place where the inner filter box is connected to the water inlet pipe, a water outlet is provided at the place where the inner filter box is connected to the water outlet pipe, and a filter bucket is fixedly connected to the water outlet in the inner filter box as the primary filtering device.

[0010] Preferably, the upper end of the outer filter box is an open end, and a box cover is detachably provided at the open end of the outer filter box; the upper end of the inner filter box is also set as an open end, and a block for closing the open end of the inner filter box is provided between the inner filter box and the box cover.

[0011] Preferably, the box cover is detachably fixedly connected to the outer filter box by a first fixing screw.

[0012] Preferably, grooves are respectively formed on opposite sides of the inner wall of the inner filter box at positions close to the top.

[0013] Preferably, a retaining ring fixedly connected to the water inlet is provided inside the inner filter box.

[0014] Preferably, the inner walls of the water inlet pipe and the water outlet pipe are both provided with an anti-corrosion layer.

[0015] Preferably, a socket is integrally formed in the middle of the water outlet pipe, and a filter is movably inserted into the socket along a vertical direction, and water entering the water outlet pipe is filtered through the filter.

[0016] Preferably, a fixing block is fixedly connected to the top of the filter screen, and a plurality of second fixing screws are threadedly connected between the fixing block and the insert sleeve.

[0017] Preferably, sealing gaskets are respectively provided between the contact surface between the outer filter box and the box cover, between the inner wall of the outer filter box and the contact surface between the inner filter box, and between the contact surface between the insert sleeve and the fixing block.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] After the utility model adopts the above structure, through the mutual cooperation between the outer filter box, the inner filter box, the box cover and the filter bucket, after the filter device performs filtering for a long time and a certain amount of impurities are accumulated in the inner filter box, the box cover can be removed, the inner filter box can be pulled out from the outer filter box, and it can be cleaned or replaced. In this way, the impurities accumulated in the inner filter box can be cleaned while the filter holes on the filter bucket can be flushed and cleaned; at the same time, the filter net can also be disassembled for cleaning or replacement, and the operation is simple and quick to prevent the device from being blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but this does not constitute any limitation to the present invention.

[0021] Figure 1 The present invention is a schematic diagram of the main structure of a filtering device for water supply and drainage.

[0022] Figure 2 The present invention is a cross-sectional view of a filtering device for water supply and drainage.

[0023] Figure 3 A filter device for water supply and drainage Figure 2 A is an enlarged structural diagram of FIG.

[0024] Figure 4 A filter device for water supply and drainage Figure 2 Schematic diagram of the enlarged structure at B.

[0025] In the figure: 1. water inlet pipe; 2. external filter box; 3. box cover; 4. blocking block; 5. water outlet pipe; 6. filter screen; 7. flange; 8. internal filter box; 9. water inlet; 10. water outlet; 11. filter bucket; 12. anti-corrosion layer; 13. first fixing screw; 14. plug-in sleeve; 15. fixing plate; 16. second fixing screw; 17. sealing gasket; 18. groove; 19. retaining ring. DETAILED DESCRIPTION

[0026] With respect to the above technical solution, preferred embodiments are given and specifically described in conjunction with drawings.

[0027] See also Figure 1-4 The water supply and drainage filtering device of the utility model comprises an inlet pipe 1 and an outlet pipe 5, an outer filter box 2 is connected between the inlet pipe 1 and the outlet pipe 5, sewage enters the outer filter box 2 through the inlet pipe 1, and then enters the outlet pipe 5 through the outer filter box 2. A connecting flange 7 is respectively provided at one end of the inlet pipe 1 and the outlet pipe 5 away from the outer filter box 2, and the inlet pipe 1 and the outlet pipe 5 are connected to the corresponding drainage pipeline through the flange 7.

[0028] In order to increase the service life of the water inlet pipe and the water outlet pipe, in some embodiments, an anti-corrosion layer 12 is provided on the inner walls of the water inlet pipe 1 and the water outlet pipe 5. The anti-corrosion layer 12 is made of polypropylene material. The product made of this material has high anti-corrosion performance, thereby greatly increasing the service life of the device.

[0029] The outer filter box 2 is a square structure with an open top, and a detachable box cover 3 is provided at the open end. In this embodiment, the box cover 3 is detachably fixed to the open end of the outer filter box 2 by a first fixing screw 13, and is used to close the outer filter box 2. An inner filter box 8 with an open top is movably provided in the outer filter box 2, and a block 4 is provided between the open end of the inner filter box 8 and the box cover 3 to improve the sealing performance of the outer filter box 2. At the same time, it is used to seal the open end of the inner filter box 8 and press the inner filter box 8 through the box cover 3 and the block 4.

[0030] In order to improve the sealing performance and installation stability of the outer filter box, in some embodiments, a sealing gasket 17 is provided between the contact surface of the box cover 3 and the open end of the outer filter box 2, and between the contact surface of the inner filter box 8 and the inner wall of the outer filter box 2. The sealing gasket 17 is made of rubber material, and the sealing performance of the outer filter box 2 can be further improved by providing the sealing gasket 17. The inner filter box 8 can be positioned by the box cover 3, the block 4 and the sealing gasket 17 to prevent it from swaying in the outer filter box 2.

[0031] The inner filter box 8 is provided with a water inlet 9 and a water outlet 10 at positions relative to the water inlet pipe 1 and the water outlet pipe 5. The diameter of the water inlet 9 is consistent with the inner diameter of the water inlet pipe 1, and the diameter of the water outlet 10 is consistent with the inner diameter of the water outlet pipe 5. A filter bucket 11 fixedly connected to the water outlet 10 is provided inside the inner filter box 8, and the tip of the filter bucket 11 is located inside the inner filter box 8 and is arranged away from the water outlet 10. Sewage enters the inner filter box 8 inside the outer filter box 2 through the water inlet pipe 1 and the water inlet 9, and then enters the water outlet pipe 5 through the water outlet 10 after being filtered by the filter bucket 11. Since the filter bucket 11 located in the filter box 8 is bucket-shaped, impurities will not easily adhere to the surface of the filter bucket 11, thereby reducing the probability of clogging.

[0032] Open the box cover 3 of the outer filter box 2, remove the block 4, and then take the inner filter box 8 out of the outer filter box 2 for cleaning. In order to facilitate the removal of the inner filter box 8, in some embodiments, gripping grooves 18 are provided on the inner walls on opposite sides of the opening end of the inner filter box 8. When taking out, the inner filter box 8 can be conveniently taken out by hooking the grooves 18 with both hands.

[0033] In order to prevent the impurities from flowing back when the inner filter box 8 is taken out, in some embodiments, a retaining ring 19 is fixedly provided at one end of the water inlet 9 inside the inner filter box 8. The retaining ring 19 can block the impurities when the inner filter box 8 is taken out, and prevent the impurities from flowing back into the water inlet pipe 1 through the water inlet 9.

[0034] A filter screen 6 is detachably provided in the middle of the water outlet pipe 5 , through which smaller fine particles in the water can be filtered, thereby greatly improving the filtering effect of the filtering device.

[0035] In order to realize the detachable installation of the filter screen 6, in the present embodiment, the structure adopted is: a socket 14 is integrally formed in the middle part of the water outlet pipe 5, the filter screen 6 is movably inserted in the socket 14 along the vertical direction, a fixing plate 15 is fixedly connected to the top of the filter screen 6, and a plurality of second fixing screws 16 are threadedly connected between the fixing plate 15 and the socket 14, and the fixing plate 15 and the filter screen 6 are detachably connected to the socket 14 through the second fixing screws 16.

[0036] In addition to the plug-in connection method of the present embodiment, the filter screen 6 can be implemented in other structural forms. For example, the filter screen 6 is made into a separate component, the water outlet pipe 5 is divided into a two-section structure, and the filter screen 6 is fixedly connected between the two-section water outlet pipe 5 in a detachable manner. When replacing, the filter screen 6 can be directly replaced by disassembling or cleaning.

[0037] The filter head 11 of the inner filter box 8 is used as a primary filter to perform coarse filtration, and the filter screen 6 is used as a secondary filter to perform further filtration. The filter hopper 11 of the inner filter box 8 is combined with the filter screen 6 to filter impurities in the sewage as much as possible, which can improve the sewage cleanliness.

[0038] In order to improve the installation sealing of the filter screen 6 , in some embodiments, a sealing gasket 17 is provided between the contact surface of the plug sleeve 14 and the fixing plate 15 to improve the sealing performance of the filter screen 6 .

[0039] When in use, after the water inlet pipe 1 and the water outlet pipe 5 are connected to the corresponding drainage pipeline through the flange 7, the sewage will enter the inner filter box 8 through the water inlet pipe 1 and the water inlet 9, enter the outlet pipe 5 through the water outlet 10 after being filtered by the filter bucket 11, and further filtered through the filter screen 6, and then discharged through the outlet pipe 5. When a certain amount of impurities accumulate in the inner filter box 8 and need to be cleaned and replaced, it is only necessary to unscrew the first fixing screws 13 to remove the box cover 3, and take the inner filter box 8 out of the outer filter box 2 for cleaning and replacement. When the filter screen 6 is blocked, it is only necessary to unscrew the second fixing screws 16 to remove the fixing plate 15 and the filter screen 6 together for replacement and cleaning. The operation is simple and convenient.

Claims

1. A filter device for water supply and drainage, characterized in that: The invention comprises a water inlet pipe (1) and a water outlet pipe (5); an outer filter box (2) is conductively connected between the water inlet pipe (1) and the water outlet pipe (5); an inner filter box (8) is movably arranged in the outer filter box (2); the inner filter box (8) can be removed from the outer filter box (2); the inner filter box (8) is respectively connected to the water inlet pipe (1) and the water outlet pipe (5); a primary filter device is arranged in the inner filter box (8); water flows into the inner filter box (8) through the water inlet pipe (1), and enters the water outlet pipe (5) after being filtered by the primary filter device of the inner filter box (8); A filter screen (6) is detachably provided in the water outlet pipe (5), and the filter screen (6) can perform secondary filtration on the water flowing through the water outlet pipe (5).

2. The filter device for water supply and drainage according to claim 1, characterized in that: The inner filter box (8) is provided with a water inlet (9) at a location connected to the water inlet pipe (1), and a water outlet (10) at a location connected to the water outlet pipe (5). A filter bucket (11) is fixedly connected to the water outlet (10) in the inner filter box (8) as the primary filtering device.

3. The filter device for water supply and drainage according to claim 2, characterized in that: The upper end of the outer filter box (2) is an open end, and a box cover (3) is detachably provided at the open end of the outer filter box (2); the upper end of the inner filter box (8) is also provided as an open end, and a block (4) for closing the open end of the inner filter box (8) is provided between the inner filter box (8) and the box cover (3).

4. The filter device for water supply and drainage according to claim 3, characterized in that: The box cover (3) is detachably fixedly connected to the outer filter box (2) via a first fixing screw (13).

5. The filter device for water supply and drainage according to claim 3, characterized in that: Grooves (18) are respectively provided at positions close to the top on opposite sides of the inner wall of the inner filter box (8).

6. The filter device for water supply and drainage according to claim 3, characterized in that: A retaining ring (19) fixedly connected to the water inlet (9) is provided inside the inner filter box (8).

7. The filter device for water supply and drainage according to claim 1, characterized in that: The inner walls of the water inlet pipe (1) and the water outlet pipe (5) are both provided with an anti-corrosion layer (12).

8. The filter device for water supply and drainage according to claim 3, characterized in that: A plug sleeve (14) is integrally formed in the middle of the water outlet pipe (5), and a filter screen (6) is movably inserted into the plug sleeve (14) in a vertical direction, so that water entering the water outlet pipe (5) is filtered through the filter screen (6).

9. The filter device for water supply and drainage according to claim 6, characterized in that: A fixing block (15) is fixedly connected to the top of the filter screen (6), and a plurality of second fixing screws (16) are threadedly connected between the fixing block (15) and the insert sleeve (14).

10. The filter device for water supply and drainage according to claim 8, characterized in that: Sealing gaskets (17) are provided between the contact surfaces of the outer filter box (2) and the box cover (3), between the inner wall of the outer filter box (2) and the contact surface of the inner filter box (8), and between the contact surfaces of the plug sleeve (14) and the fixing block (15).

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