A valve filter

Abstract

The utility model discloses a valve filter, which relates to the technical field of filters. In view of the problem that it is not convenient to clean the filter screen inside the filter after the internal filter screen of the filter in the prior art is blocked, the following scheme is proposed, which includes a shell, the top of which is connected with a filter mechanism, and the filter mechanism includes a connecting shell, a screw rod rotatably connected to the top of the connecting shell, a filter assembly plugged into the connecting shell, a fixed block fixed to the bottom of the outer wall at both ends of the connecting shell, and a stopper fixed to the bottom of the fixed block, and the filter assembly includes a filter cartridge. The utility model rotates the screw rod so that the connecting shell moves upward with the rotation of the screw rod. When the connecting shell moves to the outside of the shell, the stoppers connected on both sides also move upward inside the connecting shell and move to the opening of the connecting pipe to block it. Then the filter cartridge is taken out of the connecting shell, and the filter screens on both sides can be flushed through the flushing port.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a valve filter. Background Art

[0002] Valve filter is an indispensable filtering device for the pipeline system of conveying medium. Valve filter is usually installed at the inlet of pressure reducing valve, pressure relief valve, water level valve or other equipment to remove impurities in the medium to protect the normal use of valve and equipment. Valve filter has the characteristics of advanced structure, small resistance and convenient sewage discharge.

[0003] Most existing filters are closed. After long-term use, the internal filter screen of the filter is easily clogged, affecting the normal use of the filter. It is not convenient to clean the internal filter screen of the filter. Utility Model Content

[0004] In view of the deficiencies of the prior art, the utility model provides a valve filter, which overcomes the deficiencies of the prior art and effectively solves the problem that after the internal filter screen of the filter in the prior art is clogged, it is not convenient to clean the filter screen inside the filter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A valve filter comprises a shell, the top of which is connected to a filter mechanism, and the filter mechanism comprises a connecting shell, a screw rod rotatably connected to the top of the connecting shell, a filter assembly inserted into the connecting shell, a fixed block fixed to the bottom of the outer wall at both ends of the connecting shell, and a stopper fixed to the bottom end of the fixed block, and the filter assembly comprises a filter cartridge and a filter screen connected to the filter cartridge.

[0007] By turning the rotary handle, the rotary handle drives the screw rod to rotate, and cooperates with the fixing frame screwed with the screw rod to make the connecting shell rise and move with the rotation of the screw rod. When the connecting shell moves to the outside of the shell, the blocks connected on both sides also move upward inside the connecting shell and move to the opening of the connecting pipe to seal it. Then the filter cartridge is taken out of the connecting shell, and the filter screens on both sides can be flushed through the flushing port.

[0008] Preferably, both ends of the shell are fixedly connected with connecting pipes, and the ends of the two connecting pipes away from the shell are sleeved and fixed with flanges.

[0009] It is connected to the external water pipe through the connecting pipe and flange.

[0010] Preferably, fixing frames are fixed on both sides of the top of the shell, and the fixing frames and the screw rod form a threaded fit.

[0011] The position of the filter mechanism is moved by rotating the screw rod through the threaded cooperation between the fixing frame and the screw rod.

[0012] Preferably, the top of the screw rod is connected to a rotating wheel handle, and the bottom of the rotating wheel handle is provided with a hexagonal groove, and the top of the screw rod is fixed with a hexagonal block that forms an interference fit with the hexagonal groove.

[0013] The screw rod is rotated by means of the plugged-in rotating wheel handle.

[0014] Preferably, the outer diameter of the stopper matches the outer diameter of the connecting pipe, and the stopper and the connecting pipe form a sealing fit.

[0015] When the filter mechanism moves upward, the stopper moves to the opening of the connecting pipe to block the connecting pipe.

[0016] Preferably, the annular outer wall of the filter cartridge is provided with flushing openings distributed at equal distances along the length direction, and the filter screens are respectively located on both sides of the flushing openings, and the mesh size of the filter screens decreases successively along the length direction of the filter cartridge.

[0017] When the connecting shell is moved to the outside of the shell, the filter cartridge is taken out of the connecting shell, and the filter screens on both sides can be flushed through the flushing port. Setting filter screens with different mesh sizes can improve the overall filtering efficiency.

[0018] The beneficial effects of the utility model are:

[0019] By rotating the screw rod, the connecting shell moves up with the rotation of the screw rod. When the connecting shell moves to the outside of the shell, the blocks connected on both sides also move upward inside the connecting shell and move to the opening of the connecting pipe to seal it. Then the filter cartridge is taken out of the connecting shell, and the filter screens on both sides can be flushed through the flushing port, which effectively solves the problem of inconvenient cleaning of the filter screen inside the filter after the internal filter screen of the filter is blocked in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a valve filter proposed by the utility model;

[0021] Figure 2 This is a schematic diagram of the filtering mechanism structure of a valve filter proposed by the utility model;

[0022] Figure 3 The utility model is a schematic diagram of the filter assembly structure of a valve filter.

[0023] In the figure: 1. Shell; 2. Connecting pipe; 3. Fixing frame; 4. Filter mechanism; 5. Connecting shell; 6. Screw rod; 7. Rotating wheel handle; 8. Filter assembly; 9. Fixing block; 10. Stop block; 11. Filter cartridge; 12. Flushing port; 13. Filter net. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Example:

[0026] Reference Figure 1-3 A valve filter comprises a housing 1, a filter mechanism 4 is connected to the top of the housing 1, the filter mechanism 4 comprises a connecting shell 5, a screw rod 6 rotatably connected to the top of the connecting shell 5, a filter assembly 8 inserted into the connecting shell 5, a fixing block 9 fixed to the bottom of the outer wall at both ends of the connecting shell 5 and a stopper 10 fixed to the bottom of the fixing block 9, and the filter assembly 8 comprises a filter cartridge 11 and a filter screen 13 connected to the filter cartridge 11;

[0027] Both ends of the shell 1 are fixedly connected with connecting pipes 2, and the ends of the two connecting pipes 2 away from the shell 1 are sleeved and fixed with flanges, which are connected to the external water pipe through the connecting pipes 2 and the flanges. Both sides of the top of the shell 1 are fixed with fixing frames 3, and the fixing frames 3 and the screw rod 6 form a threaded fit. Through the threaded fit between the fixing frames 3 and the screw rod 6, the screw rod 6 is rotated to move the position of the filtering mechanism 4;

[0028] The top of the screw rod 6 is connected with a rotary handle 7, and a hexagonal groove is provided at the bottom of the rotary handle 7. A hexagonal block that forms an interference fit with the hexagonal groove is fixed on the top of the screw rod 6. The screw rod 6 is rotated by the plugged rotary handle 7, and the outer diameter of the block 10 is adapted to the outer diameter of the connecting pipe 2. The block 10 forms a sealing fit with the connecting pipe 2. When the filtering mechanism 4 moves upward, the block 10 moves to the opening of the connecting pipe 2 to block the connecting pipe 2.

[0029] The annular outer wall of the filter cartridge 11 is provided with flushing ports 12 which are distributed at equal distances along the length direction. The filter screens 13 are respectively located on both sides of the flushing ports 12. The mesh size of the filter screens 13 decreases successively along the length direction of the filter cartridge 11. When the connecting shell 5 is moved to the outside of the shell 1, the filter cartridge 11 is taken out of the connecting shell 5. The flushing ports 12 can flush the filter screens 13 on both sides. Setting filter screens 13 with different mesh sizes can improve the overall filtering efficiency.

[0030] Working principle:

[0031] During operation, the screw rod 6 is rotated by turning the rotary handle 7, and the fixing frame 3 screwed to the screw rod 6 is cooperated to make the connecting shell 5 rise and move along with the rotation of the screw rod 6. When the connecting shell 5 moves to the outside of the shell 1, the blocks 10 connected on both sides also move upward inside the connecting shell 5, and move to the opening of the connecting pipe 2 for blocking, and then the filter cartridge 11 is taken out of the connecting shell 5, and the filter screens 13 on both sides can be flushed through the flushing port 12.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A valve filter, comprising a housing (1), characterized in that: The top of the housing (1) is connected to a filter mechanism (4), and the filter mechanism (4) comprises a connecting shell (5), a screw rod (6) rotatably connected to the top of the connecting shell (5), a filter assembly (8) inserted into the connecting shell (5), a fixing block (9) fixed to the bottom of the outer wall at both ends of the connecting shell (5), and a stopper (10) fixed to the bottom of the fixing block (9), and the filter assembly (8) comprises a filter cartridge (11) and a filter screen (13) connected to the filter cartridge (11).

2. A valve filter according to claim 1, characterized in that: Both ends of the shell (1) are fixedly connected to connecting pipes (2), and the ends of the two connecting pipes (2) away from the shell (1) are sleeved and fixed with flanges.

3. A valve filter according to claim 1, characterized in that: A fixing frame (3) is fixed to both sides of the top of the housing (1), and the fixing frame (3) and the screw rod (6) form a threaded fit.

4. A valve filter according to claim 1, characterized in that: The top of the screw rod (6) is connected to a rotating wheel handle (7), and the bottom of the rotating wheel handle (7) is provided with a hexagonal groove, and the top of the screw rod (6) is fixed with a hexagonal block that forms an interference fit with the hexagonal groove.

5. A valve filter according to claim 1, characterized in that: The outer diameter of the stopper (10) is matched to the outer diameter of the connecting pipe (2), and the stopper (10) and the connecting pipe (2) form a sealing fit.

6. A valve filter according to claim 1, characterized in that: The annular outer wall of the filter cartridge (11) is provided with flushing openings (12) distributed at equal distances along the length direction, and the filter screens (13) are respectively located on both sides of the flushing openings (12), and the mesh size of the filter screens (13) decreases successively along the length direction of the filter cartridge (11).

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