High-pressure constant-pressure filter

Abstract

The utility model discloses a high pressure constant pressure filter relates to filter technical field, including shell and fixed cover, shell and fixed cover are fixed connection, the fixed cover top is equipped with the sealing cover, the sealing cover top is equipped with the movable block, the movable block top is equipped with the connecting piece, the inside of shell is equipped with the filter core, the connecting piece is equipped with the connecting piece. An elastic sealing piece is arranged at the bottom end in the shell, and a cleaning ring is arranged in the shell. When the filter element is replaced, the sealing cover is rotated, a user takes out the filter element, the bottom clamping groove drives the cleaning ring to move along the inner wall in the lifting process of the filter element, the scraper structure can remove attached scale, after the filter element reaches the top, the stop block is matched with the inclined face of the baffle ring to achieve automatic separation of the cleaning ring, and the spring column resets to enable the cleaning ring to return to the original position. When a new filter element is installed, the bottom stop block needs to be pressed downwards to be clamped into the clamping groove, finally the sealing cover is screwed to achieve system sealing, and the problems that a traditional filter element is difficult to disassemble and the inner wall is inconvenient to clean are solved.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, specifically a high-pressure constant-pressure filter. Background Technology

[0002] A high-pressure constant-pressure filter is a precision filtration device specifically designed for high-pressure fluid systems. It is mainly used to remove solid particles, impurities, and microorganisms from liquids or gases to ensure stable operation of the system and fluid purity under high-pressure environments. Its core structure typically consists of a high-pressure resistant stainless steel shell, multi-layer composite filter media, and a precision pressure relief valve. It can withstand working pressures of up to tens of megapascals. Through a physical filtration mechanism, the fluid enters the inner fine filter element from the outer coarse filter media, intercepting particles of different sizes step by step. At the same time, the bypass valve design prevents filter element clogging from causing abnormal system pressure.

[0003] In existing technologies, when using high-pressure constant pressure filters for extended periods, the internal filter element needs to be replaced after prolonged operation; otherwise, it will affect the filter's performance. Therefore, during disassembly, the bolts connecting the flange at one end of the filter are usually removed one by one, followed by the removal of the top cover, and then the filter element inside is taken out and replaced. This method of removing the bolts one by one is quite cumbersome. Furthermore, after the filter element is removed, scale deposits will accumulate on the inner wall of the filter after prolonged operation, which are difficult to remove. If not cleaned, they may corrode the filter itself. Summary of the Invention

[0004] Based on this, the purpose of this utility model is to provide a high-pressure constant pressure filter to solve the technical problems of difficult filter element replacement and difficulty in removing scale deposits on the inner wall of the filter.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-pressure constant-pressure filter, comprising a housing and a fixed cover, wherein the housing and the fixed cover are fixedly connected, a sealing cover is threadedly connected to the top of the fixed cover, a movable block is rotatably connected to the top of the sealing cover, a connector is fixedly connected to the top of the movable block, and the other end of the connector is fixedly connected to the fixed cover, a filter element is disposed inside the housing, an elastic sealing element is fixedly connected to the bottom of the housing, and multiple sets of springs are disposed inside the elastic sealing element, a cleaning ring is disposed inside the housing, and the cleaning ring is located between the housing and the filter element, and a cleaning scraper is disposed on the outer wall of the cleaning ring.

[0006] By adopting the above technical solution, this utility model utilizes high-pressure water flowing through the gap between the outer shell and the filter element during operation. Under pressure, the water penetrates the inner layer of the filter element to trap impurities. Clean fluid enters the filter element and is output from the outlet. When replacing the filter element, the threaded sealing cap needs to be rotated. After the sealing cap disengages from the fixed cap, the internal elastic seal, through the action of a spring, lifts the filter element to the top of the outer shell. The user then removes the filter element. During the lifting process, the bottom locking groove drives the cleaning ring to move along the inner wall. The scraper structure can remove the attached scale. After the filter element reaches the top, the inclined surface of the block and the retaining ring cooperates to automatically disengage the cleaning ring. The spring column resets the cleaning ring to return it to its original position. When installing a new filter element, it is necessary to press down to squeeze the bottom block. After the filter element is in place, the block is locked into the locking groove under the action of the spring. Finally, tightening the sealing cap achieves system sealing. This solves the problems of difficult filter element disassembly and inconvenient inner wall cleaning in traditional filters.

[0007] Furthermore, a spring post is fixedly connected to the top of the cleaning ring, and a blocking block is fixedly connected to one end of the spring post. The top of the blocking block is designed with an inclined surface. A locking groove is opened on the outer wall of the filter element. The cross-sectional size of the locking groove matches the cross-sectional size of the blocking block. A retaining ring is fixedly connected to the bottom of the inner part of the fixing cover. The bottom of the retaining ring is designed with an inclined surface, and the inclined surface of the retaining ring matches the inclined surface of the top of the blocking block.

[0008] By adopting the above technical solution, after the filter element reaches the top of the housing, the block will be disengaged from the retaining ring. Due to the inclined design of the top of the block and the inclined design of the bottom of the retaining ring, the block and the retaining ring can cooperate to squeeze the block, causing the block to move towards the spring column, thereby disengaging the block from the locking groove and disengaging the cleaning ring from the filter element.

[0009] Furthermore, a water inlet is provided on one side of the top of the outer casing, a wastewater outlet is provided at the bottom of the outer wall of the outer casing, and a water outlet is provided at the bottom of the outer casing, with the water outlet located at the bottom of the inside of the filter element.

[0010] By adopting the above technical solution, the inlet is connected to an inlet pipe, the outlet is connected to an outlet pipe, and the wastewater outlet is connected to a wastewater discharge pipe. At the same time, a control valve is installed outside the wastewater discharge pipe, and unfiltered water is first transported into the filter housing through the inlet pipe.

[0011] In summary, this utility model has the following beneficial effects: During operation, high-pressure water flows through the gap between the outer shell and the filter element, penetrating the inner layer of the filter element under pressure to trap impurities. Clean fluid enters the filter element and exits from the outlet. When replacing the filter element, the threaded sealing cap needs to be rotated. After the sealing cap disengages from the fixed cap, the internal elastic seal, through spring action, lifts the filter element to the top of the outer shell. The user then removes the filter element. During the lifting process, the bottom locking groove drives the cleaning ring to move along the inner wall. The scraper structure removes attached scale. After the filter element reaches the top, the inclined surface of the block and the retaining ring automatically disengages the cleaning ring. The spring column resets, returning the cleaning ring to its original position. When installing a new filter element, it is necessary to press down to squeeze the bottom block. After the filter element is in place, the block engages with the locking groove under spring action. Finally, tightening the sealing cap achieves system sealing, solving the problems of difficult filter element disassembly and inconvenient inner wall cleaning in traditional filters. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0015] Figure 4 This utility model Figure 3 Enlarged view of point B;

[0016] Figure 5 This is a cross-sectional view of some parts of this utility model.

[0017] In the diagram: 1. Outer shell; 2. Fixed cover; 3. Sealing cover; 4. Movable block; 5. Connector; 6. Filter element; 7. Cleaning ring; 8. Spring post; 9. Block; 10. Engaging groove; 11. Retaining ring; 12. Elastic seal; 13. Inlet; 14. Wastewater outlet; 15. Outlet. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0019] The embodiments of this utility model will be described below based on its overall structure.

[0020] A high-pressure constant-pressure filter, such as Figure 1-5As shown, the filter includes an outer shell 1 and a fixed cover 2. The outer shell 1 and the fixed cover 2 are fixedly connected. The top of the fixed cover 2 is threadedly connected to a sealing cover 3. The top of the sealing cover 3 is rotatably connected to a movable block 4. The top of the movable block 4 is fixedly connected to a connector 5, and the other end of the connector 5 is fixedly connected to the fixed cover 2. After the filter has been working for a long time, the filter element needs to be replaced. At this time, the sealing cover 3 can be rotated directly. Since the movable block 4 on the top of the sealing cover 3 is movable, the rotation of the sealing cover 3 will not affect the movable block 4. Since the outer wall of the sealing cover 3 is threaded and the top of the fixed cover 2 is also threaded, the sealing cover 3 can be rotated to detach from the fixed cover 2.

[0021] Furthermore, a filter element 6 is provided inside the outer shell 1, and an elastic sealing element 12 is fixedly connected to the bottom of the inner shell 1. Multiple sets of springs are provided inside the elastic sealing element 12. A cleaning ring 7 is provided inside the outer shell 1, and the cleaning ring 7 is located between the outer shell 1 and the filter element 6. A cleaning scraper is provided on the outer wall of the cleaning ring 7.

[0022] During the process of taking out the filter element 6, the locking groove 10 at the bottom of the filter element 6 will drive the bottom of the block 9, and the cleaning ring 7 will be carried by the filter element 6 to move along the inner wall of the outer shell 1 through the spring column 8. Since the outer wall of the cleaning ring 7 is equipped with a cleaning scraper, the scale deposits on the inner wall of the outer shell 1 can be scraped off.

[0023] In the example, a spring post 8 is fixedly connected to the top of the cleaning ring 7, and a block 9 is fixedly connected to one end of the spring post 8. The top of the block 9 is designed with a slope. A locking groove 10 is opened on the outer wall of the filter element 6. The cross-sectional size of the locking groove 10 matches the cross-sectional size of the block 9. A retaining ring 11 is fixedly connected to the bottom of the inside of the fixing cover 2. The bottom of the retaining ring 11 is designed with a slope, and the slope of the retaining ring 11 matches the slope of the top of the block 9.

[0024] After the filter element 6 reaches the top of the outer shell 1, the blocking block 9 will be disengaged from the retaining ring 11. Due to the sloping design of the top of the blocking block 9 and the sloping design of the bottom of the retaining ring 11, the blocking block 9 and the retaining ring 11 can cooperate to squeeze the blocking block 9, causing the blocking block 9 to move towards the spring column, thereby causing the blocking block 9 to disengage from the locking groove 10 and causing the cleaning ring 7 to disengage from the filter element 6.

[0025] In the example, a water inlet 13 is provided on one side of the top of the outer casing 1, a wastewater outlet 14 is provided at the bottom of the outer wall of the outer casing 1, and a water outlet 15 is provided at the bottom of the outer casing 1. The water outlet 15 is located at the bottom of the filter element 6. The water inlet 13 is connected to a water inlet pipe, the water outlet 15 is connected to a water outlet pipe, and the wastewater outlet 14 is connected to a wastewater discharge pipe. At the same time, a control valve is provided outside the wastewater discharge pipe. Unfiltered water is first delivered into the filter casing 1 through the water inlet pipe.

[0026] The working principle of this utility model is as follows: In use, the inlet 13 is connected to an inlet pipe, the outlet 15 is connected to an outlet pipe, and the wastewater outlet 14 is connected to a wastewater discharge pipe. A control valve is installed outside the wastewater discharge pipe. Unfiltered water is first introduced into the filter housing 1 through the inlet pipe. After entering the filter, the water first enters the space between the housing 1 and the filter element 6. Under the high pressure of the inlet pipe, the water permeates into the filter element 6, thus being filtered. The filtered water then enters the space between the filter elements 6 and is then discharged to the outside through the outlet 15 into the outlet pipe.

[0027] After the filter has been working for a long time, the filter element needs to be replaced. At this time, the sealing cover 3 can be rotated directly. Since the movable block 4 at the top of the sealing cover 3 is movable, the rotation of the sealing cover 3 will not affect the movable block 4. Since the outer wall of the sealing cover 3 is threaded and the top of the fixed cover 2 is also threaded, the sealing cover 3 can be rotated to detach from the fixed cover 2.

[0028] After the sealing cover 3 is removed, because the connecting piece 5 is made of flexible material, the user can directly pick up the sealing cover 3. At this time, the filter element 6 inside the outer shell 1 will be lifted up by the elastic sealing piece 12 under the action of multiple sets of springs inside the elastic sealing piece 12, so that part of the top of the filter element 6 is exposed outside the outer shell 1, making it convenient for the user to pick up the filter element 6. During the process of picking up the filter element 6, the locking groove 10 at the bottom of the filter element 6 will drive the bottom of the blocking block 9, and through the spring column 8, the cleaning ring 7 will be carried by the filter element 6 to move along the inner wall of the outer shell 1. Since the outer wall of the cleaning ring 7 is equipped with a cleaning scraper, the scale deposits on the inner wall of the outer shell 1 can be scraped off.

[0029] After the filter element 6 reaches the top of the housing 1, the block 9 will be disengaged from the retaining ring 11. Due to the sloping design of the top of the block 9 and the sloping design of the bottom of the retaining ring 11, the block 9 and the retaining ring 11 can cooperate to squeeze the block 9, causing the block 9 to move towards the spring column, thereby disengaging the block 9 from the locking groove 10 and disengaging the cleaning ring 7 from the filter element 6.

[0030] At this time, the blocking block 9 will reset under the elastic action of the spring column 8, and the cleaning ring 7 will fall to the bottom of the inner shell 1 under the action of gravity. The user can put the new filter element 6 into the inner shell 1. After the filter element 6 reaches the bottom of the inner shell 1, it will press the blocking block 9, causing the blocking block 9 to move towards the spring column 8. Then the filter element 6 will press the elastic seal 12 at the bottom of the inner shell 1. At this time, the blocking block 9 will be inserted into the locking groove 10 under the elastic action of the spring column 8.

[0031] Afterwards, the user places the sealing cap 3 on the fixing cap 2 and rotates the sealing cap 3. While squeezing the filter element 6, it isolates the inside and outside of the outer shell 1, thus completing the replacement of the filter element. When water is turned on, the dirt inside the outer shell 1 can be discharged to the outside by opening the valve of the wastewater pipe.

[0032] The above structure can solve the technical problems of difficult filter replacement and difficulty in removing scale buildup on the inner wall of the filter.

[0033] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A high-pressure constant-pressure filter, comprising a housing (1) and a fixed cover (2), characterized in that: The outer shell (1) is fixedly connected to the fixed cover (2). The top of the fixed cover (2) is threadedly connected to the sealing cover (3). The top of the sealing cover (3) is rotatably connected to the movable block (4). The top of the movable block (4) is fixedly connected to the connector (5), and the other end of the connector (5) is fixedly connected to the fixed cover (2). The outer shell (1) is provided with a filter element (6). The bottom of the inner shell (1) is fixedly connected to an elastic seal (12), and the elastic seal (12) is provided with multiple sets of springs. The outer shell (1) is provided with a cleaning ring (7), and the cleaning ring (7) is located between the outer shell (1) and the filter element (6). The outer wall of the cleaning ring (7) is provided with a cleaning scraper.

2. The high-pressure constant-pressure filter according to claim 1, characterized in that: The top of the cleaning ring (7) is fixedly connected to a spring column (8), and one end of the spring column (8) is fixedly connected to a block (9), and the top of the block (9) is designed with a slope.

3. The high-pressure constant-pressure filter according to claim 2, characterized in that: The filter element (6) has a locking groove (10) on its outer wall, and the cross-sectional size of the locking groove (10) matches the cross-sectional size of the block (9).

4. The high-pressure constant-pressure filter according to claim 2, characterized in that: The bottom of the fixed cover (2) is fixedly connected to a retaining ring (11). The bottom of the retaining ring (11) is designed with an inclined surface, and the inclined surface of the retaining ring (11) matches the inclined surface of the top of the block (9).

5. The high-pressure constant-pressure filter according to claim 1, characterized in that: A water inlet (13) is provided on one side of the top of the outer shell (1), and a wastewater outlet (14) is provided at the bottom of the outer wall of the outer shell (1).

6. The high-pressure constant-pressure filter according to claim 1, characterized in that: The bottom of the outer shell (1) is provided with a water outlet (15), and the water outlet (15) is located at the bottom of the filter element (6).

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