A removable and replaceable refrigerant filter mechanism

Abstract

The utility model relates to a refrigerant filter technical field proposes a kind of refrigerant filter mechanism of dismantling replacement, including main part and filter mechanism, main part includes cylinder body, the bottom end center of cylinder body is inserted with drain pipe, the bottom end of drain pipe is equipped with three-way solenoid valve, the bottom end of three-way solenoid valve is equipped with backflushing pipe;Filter mechanism includes metal mesh filter cartridge, metal mesh filter cartridge is set to the inside of cylinder body, and the bottom end of metal mesh filter cartridge is inserted with the upper end of drain pipe, the top of metal mesh filter cartridge is rotatably connected with carousel, the bottom end of metal mesh filter cartridge rotatably is equipped with swivel ring, and a plurality of first scrapers are fixedly installed between carousel and swivel ring, the bottom end of swivel ring is fixedly installed with a plurality of second scrapers.The utility model can use carousel, swivel ring to drive the rotation of first scraper and second scraper, first scraper can remove filter cartridge outer wall impurity, and second scraper rotation can scrape the impurity at the bottom end of cylinder body to blowdown pipe, realize the automatic cleaning of internal metal mesh filter cartridge.

Description

Technical Field

[0001] This utility model relates to the field of refrigerant filter technology, specifically to a replaceable refrigerant filter mechanism. Background Technology

[0002] In refrigerant systems, refrigerant filters are crucial components for ensuring stable system operation. Their function is to filter impurities in the refrigerant, preventing them from entering core components such as compressors and expansion valves, thus avoiding wear, blockage, or ice blockage, thereby extending equipment lifespan and maintaining refrigeration efficiency. Existing refrigerant filters suffer from impurities easily adhering to the filter element and lack a powerful cleaning mechanism. During filtration, impurities gradually accumulate on the filter element's surface and internal pores, causing filtration efficiency to decline rapidly over time. Each cleaning requires disassembling the entire filter, removing the filter element for rinsing or replacement, which is cumbersome and prone to refrigerant leakage during disassembly. Utility Model Content

[0003] The purpose of this utility model is to provide a detachable and replaceable refrigerant filter mechanism that can use a turntable and a rotating ring to drive the first scraper and the second scraper to rotate. The first scraper can remove impurities from the outer wall of the filter cartridge, and the rotation of the second scraper can scrape the impurities at the bottom of the cartridge towards the drain pipe, thereby achieving automatic cleaning of the internal metal mesh filter cartridge.

[0004] Therefore, the technical solution adopted is as follows: A replaceable refrigerant filter mechanism includes a main body and a filter mechanism. The main body includes a cylindrical body and a cover that encloses the cylindrical body. The top of the cylindrical body is connected to a water inlet pipe, and the bottom is connected to a drain pipe. The drain pipe is connected to a backflush pipe, a water outlet pipe, and a sewage discharge pipe via a three-way solenoid valve. The filter mechanism includes a metal mesh filter cartridge located inside the cylindrical body and interference-fitted with the drain pipe. The top and bottom of the metal mesh filter cartridge are rotatably connected to a turntable and a rotating ring, respectively. A plurality of first scrapers are fixedly connected between the turntable and the rotating ring, surrounding the metal mesh filter cartridge. A plurality of second scrapers are fixedly surrounded around the bottom of the rotating ring. The inner side of the first scrapers abuts against the outer wall of the metal mesh filter cartridge, and the bottom surface of the second scrapers abuts against the surface of the cylindrical body. The turntable is driven to rotate by a drive mechanism.

[0005] A further technical solution is that the inner wall of the metal mesh filter cartridge is further provided with a hydrophobic modified activated carbon fiber layer and a molecular sieve adsorption layer, wherein the hydrophobic modified activated carbon fiber layer is polyacrylonitrile-based activated carbon fiber, and the molecular sieve adsorption layer is 4A molecular sieve.

[0006] A further technical solution is that the driving mechanism includes a cross-shaped connecting block located at the bottom of the cylinder cover and rotatably connected to the cylinder cover. The top surface of the turntable is provided with a cross groove that matches the cross-shaped connecting block. The cross-shaped connecting block is engaged with the cross groove. A drive motor for driving the cross-shaped connecting block to rotate is fixed on the top of the cylinder cover.

[0007] A further technical solution is that locking bolts are movably inserted on both sides of the cylinder cover, and a fixing block is fixed on the cylinder body, with the locking bolts and the fixing block being threadedly locked together.

[0008] A further technical solution is that the sewage pipe is connected to a sewage pump, and the output end of the sewage pump is connected to a connecting pipe.

[0009] A further technical solution is that the outlet pipe flange is connected to a first ball valve, and a pressure sensor is fixedly inserted above the outlet pipe, with the probe of the pressure sensor extending into the outlet pipe.

[0010] A further technical solution is that the inlet pipe flange is connected to a second ball valve.

[0011] The beneficial effects of this utility model are: 1. Based on the original main body, this mechanism uses a turntable and a rotating ring to drive the first scraper and the second scraper to rotate. The first scraper can remove impurities from the outer wall of the filter cartridge, and the rotation of the second scraper can scrape the impurities at the bottom of the cartridge towards the drain pipe, thereby achieving automatic cleaning of the internal metal mesh filter cartridge.

[0012] 2. At the same time, it is equipped with a backflush pipe, which can switch between normal filtration and drainage and backflush cleaning, further improving the cleaning effect, ensuring the effective work of the filter element, and extending the service life of the overall mechanism. Attached Figure Description

[0013] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the overall structure from another perspective of this application; Figure 3 This is a schematic diagram of the cross-shaped connecting block described in this application; Figure 4 This is a schematic diagram of the internal structure of this application; Figure 5 This is a cross-sectional structural diagram of the metal mesh filter cartridge described in this application.

[0015] In the diagram: 1. Main body; 101. Cylinder; 102. Drain pipe; 103. Three-way solenoid valve; 104. Backflush pipe; 105. Water outlet pipe; 106. First ball valve; 107. Sewage pipe; 108. Sewage pump; 109. Connecting pipe; 110. Water inlet pipe; 111. Second ball valve; 112. Fixing block; 113. Pressure sensor; 201. Cylinder cover; 202. Locking bolt; 203. Drive motor; 204. Cross-shaped connecting block; 3. Filtration mechanism; 301. Metal mesh filter cartridge; 302. Hydrophobic modified activated carbon fiber layer; 303. Molecular sieve adsorption layer; 304. Turntable; 305. Cross groove; 306. Rotating ring; 307. First scraper; 308. Second scraper. Detailed Implementation

[0016] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figures 1-5 As shown, this utility model provides a replaceable refrigerant filter mechanism including a main body 1 and a filter mechanism 3. The main body 1 includes a cylindrical body 101 and a cover 201 that encloses the cylindrical body 101. The top of the cylindrical body 101 is connected to a water inlet pipe 110, and the bottom is connected to a drain pipe 102. The drain pipe 102 is connected to a backflush pipe 104, a water outlet pipe 105, and a sewage discharge pipe 107 respectively through a three-way solenoid valve 103. The filter mechanism 3 includes a metal mesh filter cartridge 3 located inside the cylindrical body 101 and interference-fitted with the drain pipe 102. 01. The top and bottom of the metal mesh filter cylinder 301 are rotatably connected to a turntable 304 and a rotating ring 306, respectively. A plurality of first scrapers 307 are fixedly connected between the turntable 304 and the rotating ring 306, surrounding the metal mesh filter cylinder 301. A plurality of second scrapers 308 are fixedly surrounded around the bottom of the rotating ring 306. The inner side of the first scraper 307 abuts against the outer wall of the metal mesh filter cylinder 301, and the bottom surface of the second scraper 308 abuts against the surface of the cylinder 101. The turntable 304 is driven to rotate by a driving mechanism.

[0018] The application provides a space for refrigerant filtration through the cylinder 101. The drain pipe 101, together with the three-way solenoid valve 103 and the backflush pipe 104, can realize the switching between normal filtration drainage and backflush cleaning. The metal mesh filter cylinder 301 of the filter mechanism 3 performs preliminary filtration of the refrigerant. The turntable 304 and the rotating ring 306 drive the first scraper 307 and the second scraper 308 to rotate. The first scraper 307 scrapes off the impurities attached to the outer wall of the metal mesh filter cylinder 301 to prevent the filter holes from being blocked. The second scraper 308 cleans the impurities deposited at the bottom of the cylinder 101 and pushes them into the drain pipe 107.

[0019] like Figure 5 As shown, the inner wall of the metal mesh filter cartridge 301 is further provided with a hydrophobically modified activated carbon fiber layer 302 and a molecular sieve adsorption layer 303. The hydrophobically modified activated carbon fiber layer 302 is polyacrylonitrile-based activated carbon fiber, and the molecular sieve adsorption layer 303 is 4A molecular sieve. The hydrophobically modified activated carbon fiber layer 302 adsorbs organic matter and odors in the refrigerant, while the molecular sieve adsorption layer 303 adsorbs moisture and minute impurities. This dual filtration enhances the refrigerant purification effect. The hydrophobic modification design prevents the fiber layer from absorbing water and clumping, extending the service life of the filter material.

[0020] like Figure 3 As shown, one embodiment of the drive mechanism includes a cross-shaped connecting block 204 located at the bottom of the cylinder cover 201 and rotatably connected to the cylinder cover 201. The top surface of the turntable 304 has a cross groove 305 that matches the cross-shaped connecting block 204. The cross-shaped connecting block 204 engages with the cross groove 305. A drive motor 203, which drives the cross-shaped connecting block 204 to rotate, is fixed to the top of the cylinder cover 201. The engagement of the cross-shaped connecting block 204 with the cross groove 305 enables rapid linkage between the cylinder cover 201 and the turntable 304, ensuring precise power transmission from the drive motor 203. The engaging structure facilitates easy disassembly, allowing for subsequent removal of the filter mechanism 3 for maintenance. The drive motor 203 provides stable power to the turntable 304, driving the scraper to automatically clean impurities, eliminating the need for manual cleaning and improving filtration and maintenance efficiency.

[0021] Meanwhile, locking bolts 202 are movably inserted on both sides of the cylinder cover 201, and a fixing block 112 is fixed on the cylinder body 101. The locking bolts 202 and the fixing block 112 are threadedly locked. This allows for quick fixing of the cylinder cover 201 and the cylinder body 101, ensuring sealing performance, and also assists in the quick positioning and engagement of the cross-shaped connecting block 204 and the cross groove 305. The overall threaded connection is easy to disassemble, facilitating the opening of the cylinder cover 201 to replace the filter mechanism 3 or to inspect internal components.

[0022] In one embodiment, the drain pipe 107 is connected to a drain pump 108, and the output end of the drain pump 108 is connected to a connecting pipe 109. The drain pipe 107, the drain pump 108, and the connecting pipe 109 work together to quickly discharge impurities and backwash wastewater cleaned from the cylinder 101. The drain pump 108 provides power for the discharge of impurities, thereby improving the discharge efficiency.

[0023] The outlet pipe 105 is flange-connected to a first ball valve 106. A pressure sensor 113 is fixedly inserted above the outlet pipe 105, with its probe extending into the outlet pipe 105. The outlet pipe 105, in conjunction with the first ball valve 106, facilitates connection to the refrigerant system. The pressure sensor 113 monitors the pressure inside the outlet pipe 105 in real time, and can determine the blockage status of the metal mesh filter cartridge 301 by detecting pressure changes, triggering backflushing or replacement operations in a timely manner to ensure the stable operation of the filtration system.

[0024] Similarly, the inlet pipe 110 is flanged with a second ball valve 111. The inlet pipe 110 provides a channel for the refrigerant to enter the cylinder 101. The first ball valve 106, in conjunction with the second ball valve 111, can cut off the connection between the refrigerant system and the cylinder 101, making it convenient to disassemble the cylinder 101 separately and improving operational flexibility.

[0025] Specifically, when using this replaceable refrigerant filter mechanism, the cylinder cover 201 is first threadedly connected and fixed to the fixing block 112 of the cylinder body 101 by the locking bolt 202, and the cross-shaped connecting block 204 is inserted into the cross groove 305 of the turntable 304; the first ball valve 106 and the second ball valve 111 are opened, and the refrigerant enters the cylinder body 101 through the water inlet pipe 110, and passes through the metal mesh filter cylinder 301, the hydrophobic modified activated carbon fiber layer 302 and the molecular sieve adsorption layer 303 in sequence to achieve multiple filtration. At the same time, the drive motor 203 is started to drive the turntable 304 and the rotating ring 306 to rotate, so that the first scraper 307 scrapes off the impurities on the outer wall of the metal mesh filter cylinder 301, and the second scraper 308 pushes the impurities at the bottom of the cylinder body 101 to the drain pipe 107, and through the drain pump 1 The filtered refrigerant is discharged through the drain pipe 102 and the three-way solenoid valve 103 from the outlet pipe 105 and re-enters the refrigerant system. The pressure sensor 113 monitors the pressure inside the outlet pipe 105 in real time. When a blockage is detected that causes abnormal pressure, the three-way solenoid valve 103 is switched to connect the backflush pipe 104, which is connected to external purified water for backflush. When the filter mechanism 3 needs to be replaced, the first ball valve 106 and the second ball valve 111 are closed to disconnect the refrigerant system from the cylinder 101, so that the cylinder 101 can be removed separately. Furthermore, by unscrewing the locking bolt 202 and opening the cylinder cover 201, the metal mesh filter cartridge 301 can be taken out for replacement or maintenance. The whole system realizes the functions of high-efficiency filtration, automatic cleaning and convenient replacement.

[0026] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A replaceable refrigerant filter mechanism, characterized in that, The system includes a main body (1) and a filtration mechanism (3). The main body (1) includes a cylinder (101) and a cover (201) for the closed cylinder (101). The top of the cylinder (101) is connected to an inlet pipe (110), and the bottom is connected to a drain pipe (102). The drain pipe (102) is connected to a backwash pipe (104), an outlet pipe (105), and a sewage pipe (107) via a three-way solenoid valve (103). The filtration mechanism (3) includes a metal mesh filter cylinder (301) located inside the cylinder (101) and press-fitted to the drain pipe (102). The top and bottom of the metal mesh filter cylinder (301) are rotatably connected to a turntable (304) and a rotating ring (306), respectively. Several first scrapers (307) are fixedly connected between the turntable (304) and the rotating ring (306) to surround the metal mesh filter cylinder (301). The bottom of the rotating ring (306) is fixed with several second scrapers (308). The inner side of the first scraper (307) abuts against the outer wall of the metal mesh filter cylinder (301), and the bottom surface of the second scraper (308) abuts against the surface of the cylinder (101). The turntable (304) is driven to rotate by a drive mechanism.

2. The replaceable refrigerant filter mechanism according to claim 1, characterized in that, The inner wall of the metal mesh filter cartridge (301) is also provided with a hydrophobic modified activated carbon fiber layer (302) and a molecular sieve adsorption layer (303) in sequence. The hydrophobic modified activated carbon fiber layer (302) is polyacrylonitrile-based activated carbon fiber, and the molecular sieve adsorption layer (303) is 4A molecular sieve.

3. The replaceable refrigerant filter mechanism according to claim 1, characterized in that, The driving mechanism includes a cross-shaped connecting block (204) located at the bottom of the cylinder cover (201) and rotatably connected to the cylinder cover (201). The top surface of the turntable (304) is provided with a cross groove (305) that matches the cross-shaped connecting block (204). The cross-shaped connecting block (204) is engaged with the cross groove (305). The top of the cylinder cover (201) is fixed with a drive motor (203) that drives the cross-shaped connecting block (204) to rotate.

4. The replaceable refrigerant filter mechanism according to claim 1, characterized in that, Locking bolts (202) are movably inserted on both sides of the cylinder cover (201), and a fixing block (112) is fixed on the cylinder body (101). The locking bolts (202) and the fixing block (112) are threadedly locked.

5. The replaceable refrigerant filter mechanism according to claim 1, characterized in that, The sewage pipe (107) is connected to a sewage pump (108), and the output end of the sewage pump (108) is connected to a connecting pipe (109).

6. The replaceable refrigerant filter mechanism according to claim 1, characterized in that, The outlet pipe (105) is flanged and connected to a first ball valve (106). A pressure sensor (113) is fixedly inserted above the outlet pipe (105), and the probe of the pressure sensor (113) extends into the outlet pipe (105).

7. The replaceable refrigerant filter mechanism according to claim 1, characterized in that, The inlet pipe (110) is flanged and connected to a second ball valve (111).

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