A microporous filter membrane capable of being quickly disassembled and assembled

Abstract

The present invention relates to the technical field of water filtration, and in particular, to a microporous filter membrane that can be quickly disassembled. It includes a filter membrane body, an outer shell arranged in the outer circle of the filter membrane body, an inner shell arranged in the inner circle of the filter membrane body, and a connector fixedly arranged inside the filter shell; the outer shell and the inner shell are both tubular structures with two ends through, and the side walls of the outer shell and the inner shell are both hollow structures; in the microporous filter membrane that can be quickly disassembled, the connection state between the connector and the connector corresponds to the disassembly state of the filter top cover, so that when the filter top cover is not disassembled, the connector and the connector are locked twice, thereby improving the firmness between the connector and the connector, thereby preventing the connector and the connector from being loosely connected or detached during the filtration process.

Description

Technical Field

[0001] The invention relates to the technical field of water filtration, in particular to a microporous filter membrane which can be quickly disassembled and assembled. Background Art

[0002] Microporous membrane filter is a membrane separation technology, mainly composed of microporous membrane and filter housing. Among them, the filter housing is a cylindrical structure, made of 304 or 316L stainless steel; the microporous membrane is made of polymer chemical materials, pore-forming additives are specially treated and then applied to the support layer. In the water treatment industry, microporous membrane has the widest application range.

[0003] The microporous filter membrane needs to be installed inside the filter housing. During filtering, open the feed valve to introduce the liquid to be filtered, and then use external equipment (such as an air compressor) to increase the pressure inside the filter housing. Under the action of pressure, the liquid to be filtered passes through the microporous filter membrane, thereby achieving filtration of the liquid.

[0004] There are two kinds of connection structures between microporous filter membrane and filter housing at present, one is threaded connection and the other is plug-in connection. Threaded connection is suitable for environments with less impurities in the liquid. In this environment, the microporous filter membrane is blocked slowly and the disassembly cycle of the microporous filter membrane is long. Threaded connection has strong firmness and can prevent the microporous filter membrane from being disconnected from the filter housing after long-term operation. Plug-in connection is suitable for environments with more impurities in the liquid. In this environment, the microporous filter membrane is blocked quickly and the number of times the microporous filter membrane is disassembled is large. Plug-in connection has fast disassembly and assembly speed, thereby improving the disassembly and assembly efficiency of the microporous filter membrane.

[0005] However, the plug-in method requires people to disassemble the microporous filter membrane strictly according to the replacement cycle. When people do not disassemble the microporous filter membrane within the specified cycle, this method of connection will easily cause the microporous filter membrane to separate from the filter housing, affecting the filtration efficiency. Summary of the invention

[0006] The object of the present invention is to provide a microporous filter membrane that can be quickly disassembled and assembled to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, a microporous filter membrane that can be quickly disassembled and assembled is provided, comprising a filter membrane body, an outer shell arranged in the outer circle of the filter membrane body, an inner shell arranged in the inner circle of the filter membrane body, and a connector fixedly arranged inside the filter shell; the outer shell and the inner shell are both tubular structures with two ends penetrated, and the side walls of the outer shell and the inner shell are both hollow structures; the top of the outer shell is fixedly connected to a cover plate in a detachable manner; the bottom of the outer shell is fixedly connected to a connector, the bottom end of the connector is plug-matched with the connector, and the connector is connected to a drain port inside the filter shell;

[0008] A secondary locking mechanism is provided between the connector and the connector, and an unlocking mechanism is provided through the top of the cover plate, and the top of the unlocking mechanism extends to the bottom of the filter top cover, for sensing the state of the filter top cover;

[0009] The secondary locking mechanism includes a latch that slides through the side wall of the connector. When the filter top cover is not removed, the unlocking mechanism limits the latch to a state where one end is located in the connector and the other end extends into the connector through the filter top cover, so as to perform secondary locking between the connector and the connector. When the filter top cover is removed, the unlocking mechanism disengages from the restriction on the latch, so that the connector and the connector are restored to a plugged state.

[0010] As a further improvement of the technical solution, the connecting piece is an annular plate structure, and the inner ring is connected to the drain port and protrudes upward to form a convex ring; the inner ring of the convex ring is provided with a plurality of slots for the plug pins to penetrate;

[0011] The outer diameter of the connector is consistent with the inner diameter of the convex ring, so that the connector can be inserted into the convex ring;

[0012] A horizontally penetrating slide groove is provided at a position of the connector side wall corresponding to the slot, the latch is slidably arranged in the slide groove, and the length of the latch is greater than the thickness of the connector side wall, and both ends of the latch are arc-shaped structures.

[0013] As a further improvement of the present technical solution, the secondary locking structure also includes a sliding ring that is longitudinally movably arranged on the inner ring of the connecting head. When the sliding ring moves downward, the sliding ring pushes the pin into the slot through the arc surface at the end of the pin; a support plate is fixedly connected to the top of the sliding ring.

[0014] As a further improvement of the present technical solution, the unlocking mechanism includes a pull rod that slides longitudinally through the cover plate, the bottom end of the pull rod is connected to the support plate, and a compression spring is arranged between the top end and the top of the cover plate to elastically connect the two; when the compression spring is not compressed, the height of the top end of the pull rod is higher than the height of the filter top cover after installation.

[0015] As a further improvement of the technical solution, the side wall of the outer shell is provided with a through sensing port and a filter port, and the side wall of the inner shell is provided with a through first through port and a second through port, wherein the first through port is provided corresponding to the sensing port, and the second through port is provided corresponding to the filter port;

[0016] The side wall of the outer shell is longitudinally slidably provided with a sealing mechanism, which seals the sensing port during filtering to prevent the liquid from contacting the portion of the filter membrane body corresponding to the sensing port; when the water level in the filter housing drops, the sealing mechanism opens the sensing port;

[0017] A clutch mechanism is provided inside the inner shell at the first opening and the second opening, and the clutch mechanism controls the connection relationship between the pull rod and the support plate according to the filtration speed of the filter membrane body corresponding to the sensing port and the second opening. When the filtration speed at the sensing port corresponding to the filter membrane body is greater than the filtration speed at the filtration port corresponding to the filter membrane body, the clutch mechanism connects the pull rod with the support plate, so that the sliding ring is driven to move upward during the upward resetting process of the pull rod.

[0018] As a further improvement of the present technical solution, the top of the support plate is fixedly connected to a push rod, the top of the push rod is fixedly connected to a disc, the diameter of the disc is larger than the diameter of the push rod, and a notch is provided on one side of the disc; the bottom end of the pull rod is bent toward the push rod to form a hook end; under normal conditions, the hook end is located directly below the notch.

[0019] As a further improvement of the technical solution, the clutch mechanism includes a fixed block fixedly arranged on the inner ring of the inner housing, and a first through-channel is arranged at a side wall of the fixed block corresponding to the first through-port, and a second through-channel is arranged at a side wall corresponding to the second through-port;

[0020] A first piston plate is disposed in the first channel for transverse sliding; a driving rod is fixedly connected to one side of the first piston plate; a guide groove is disposed through the top of the support plate, and the bottom end of the driving rod penetrates into the guide groove;

[0021] A second piston plate is slidably disposed in the second channel, and a return spring is disposed between one side of the second piston plate and the side wall of the second channel to elastically connect the two.

[0022] The top of the second channel is provided with a groove, and a limit rod is longitudinally slidably arranged in the groove, and the top end of the limit rod is bent upward and can be slidably inserted into the first channel; the outer wall of the bottom of the limit rod is provided with an inclined surface, and when the second piston plate moves toward the limit rod, the second piston plate pushes the limit rod upward through the inclined surface;

[0023] A through drainage hole is provided at the bottom of the second channel, and the drainage hole is located on a side of the second piston plate away from the filter membrane body.

[0024] As a further improvement of the present technical solution, one end of the guide groove is a straight end and the other end is an inclined end; the direction of the straight end corresponds to the moving direction of the driving rod; the inclined end is used to drive the sliding ring to rotate through the support plate when the driving rod moves.

[0025] As a further improvement of the technical solution, the distance between the top end of the limit rod and the first piston plate is greater than the distance between the inclined surface and the second piston plate. When the first piston plate passes through the top end of the limit rod, the drive rod is located in the inclined end of the guide groove.

[0026] As a further improvement of the present technical solution, the sealing mechanism includes a retaining ring slidably mounted on the outer ring of the outer shell, and the height of the retaining ring corresponding to the sensing port is greater than the height of the sensing port; the position of the inner ring of the retaining ring corresponding to the sensing port is provided with a magnet block magnetically attracted to the first piston plate; the outer ring of the retaining ring is fixedly provided with an upwardly bent connecting rod, and the top of the connecting rod is fixedly connected to a float.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. In the microporous filter membrane that can be quickly disassembled, the connection state between the connector and the connector corresponds to the disassembly state of the filter top cover, so that when the filter top cover is not disassembled, the connector and the connector are locked for the second time to improve the firmness between the connector and the connector, thereby preventing the connector and the connector from being loosely connected or detached during the filtration process.

[0029] 2. In the microporous filter membrane that can be quickly disassembled and assembled, the speed at which the liquid passes through the corresponding sensing port and filter port of the filter membrane body is monitored, and the connection relationship between the pull rod and the sliding ring is controlled according to the difference in the passing speed between the two. Only when the filter membrane body is blocked will the secondary locking between the connector and the connector be released, thereby further improving the stability of the connection between the connector and the connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic structural diagram of the outer shell of the present invention;

[0032] Figure 3 It is a structural schematic diagram of the sealing mechanism of the present invention;

[0033] Figure 4It is a structural schematic diagram of the unlocking mechanism of the present invention;

[0034] Figure 5 is a schematic cross-sectional structure diagram of a connector of the present invention;

[0035] Figure 6 It is a structural schematic diagram of the magnet block of the present invention;

[0036] Figure 7 It is a structural schematic diagram of the clutch mechanism of the present invention;

[0037] Figure 8 It is a schematic structural diagram of the driving rod of the present invention;

[0038] Fig. 9 For the present invention Figure 8 A schematic diagram of the structure at A;

[0039] Fig.10 It is a schematic structural diagram of the limiting rod of the present invention;

[0040] Fig.11 It is a schematic diagram of the active state of the first piston plate of the present invention.

[0041] The meaning of each number in the figure is:

[0042] 100, filter membrane body; 110, outer shell; 111, induction port; 112, filter port; 113, connector; 114, cover plate; 115, latch; 116, sliding ring; 117, support plate; 118, push rod; 119, disc; 120, inner shell; 121, first port; 122, second port; 130, connector; 131, convex ring; 132, slot; 140, sealing mechanism; 141, retaining ring; 142, retaining ring; 143, retaining ring; 144, retaining ring; 145, retaining ring; 146, retaining ring; 147, retaining ring; 148, retaining ring; 149, retaining ring; 150, retaining ring; 151, retaining ring; 152, retaining ring; 153, retaining ring; 154, retaining ring; 155, retaining ring; 156, retaining ring; 157, retaining ring; 158, retaining ring; 159, retaining ring; 160, retaining ring; 161, retaining ring; 162, retaining ring; 163, retaining ring; 164, retaining ring; 165, retaining ring; 166, retaining ring; 167, retaining ring; 168, retaining ring; 169, retaining ring; 170, retaining ring; 171, retaining ring; 172, retaining ring; 173, retaining ring; 174, retaining ring; 175, retaining ring; 176, retaining ring; 177, retaining ring; 178, retaining ring; 179, retaining ring; 180, retaining ring; 181, retaining ring 2. Float; 143. Connecting rod; 144. Magnet block; 150. Unlocking mechanism; 151. Pull rod; 152. Compression spring; 160. Clutch mechanism; 161. Fixed block; 162. First channel; 163. Second channel; 164. First piston plate; 165. Second piston plate; 166. Drive rod; 167. Guide groove; 168. Limit rod; 169. Inclined surface; 170. Drain hole; 200. Filter top cover. DETAILED DESCRIPTION

[0043] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0046] See also Figure 1-Figure 5 As shown, a microporous filter membrane that can be quickly disassembled and assembled is provided, including a filter membrane body 100, an outer shell 110 arranged on the outer ring of the filter membrane body 100, an inner shell 120 arranged on the inner ring of the filter membrane body 100, and a connector 130 fixedly arranged inside the filter shell; the outer shell 110 and the inner shell 120 are both tubular structures with both ends penetrated, and the side walls of the outer shell 110 and the inner shell 120 are both hollow structures (i.e., through grooves are opened through the outer rings of the outer shell 110 and the inner shell 120) to facilitate the passage of liquid; the top of the outer shell 110 is fixedly connected with a cover plate 114 in a detachable manner, such as plug-in, threaded connection, etc.; the bottom of the outer shell 110 is fixedly connected with a connector 113, the bottom end of the connector 113 is plug-fitted with the connector 130, and the connector 130 is connected with the drain port inside the filter shell.

[0047] A secondary locking mechanism is provided between the connector 113 and the connector 130, and an unlocking mechanism 150 is provided through the top of the cover plate 114, and the top of the unlocking mechanism 150 extends to the bottom of the filter top cover 200, so as to sense the state of the filter top cover 200; the secondary locking mechanism includes a latch 115 that slides through the side wall of the connector 113, and when the filter top cover 200 is not removed, the unlocking mechanism 150 limits the latch 115 through the filter top cover 200 to a state in which one end is located in the connector 113 and the other end extends into the connector 130, so as to perform secondary locking between the connector 113 and the connector 130; when the filter top cover 200 is removed, the unlocking mechanism 150 is free from the restriction on the latch 115, so that the connector 113 and the connector 130 are restored to the plugged state.

[0048] That is to say, the connection state between the connector 113 and the connector 130 is matched with the disassembly state of the filter top cover 200, so that when the filter top cover 200 is not disassembled, the connector 113 and the connector 130 are locked for the second time to improve the firmness between the connector 113 and the connector 130, thereby preventing the connector 113 and the connector 130 from being loosely connected or detached during the filtration process.

[0049] like Figure 5 As shown, the connector 130 is an annular plate-like structure, and the inner ring is connected to the drain port and protrudes upward to form a convex ring 131. The inner ring of the convex ring 131 is provided with a plurality of slots 132 for the plug 115 to penetrate. In addition, the outer ring diameter of the connector 113 is consistent with the inner ring diameter of the convex ring 131, so that the connector 113 can be inserted into the convex ring 131. A horizontally penetrating slide groove is provided at the portion of the side wall of the connector 113 corresponding to the slot 132. The plug 115 is slidably arranged in the slide groove, and the length of the plug 115 is greater than the thickness of the side wall of the connector 113. Both ends of the plug 115 are arc-shaped structures.

[0050] The secondary locking structure also includes a sliding ring 116 longitudinally movably arranged on the inner ring of the connector 113. When the sliding ring 116 moves downward, the sliding ring 116 pushes the latch 115 into the slot 132 through the arc surface at the end of the latch 115. A support plate 117 is fixedly connected to the top of the sliding ring 116. Figure 5 In the embodiment, the inner ring of the connector 113 is provided with convex strips above and below the sliding ring 116 for limiting the sliding ring 116 and preventing the sliding ring 116 from being separated from the connector 113 .

[0051] like Figure 4 As shown, the unlocking mechanism 150 includes a pull rod 151 that slides longitudinally through the cover plate 114. The bottom end of the pull rod 151 is connected to the support plate 117, and a compression spring 152 is provided between the top end and the top of the cover plate 114 to elastically connect the two. When the compression spring 152 is not compressed, the height of the top end of the pull rod 151 is higher than the height of the filter top cover 200 after installation.

[0052] It should be noted that the filter housing mentioned in the present invention has the same structure as the existing product, that is, the filter housing is a cylindrical structure, the top of which is a detachable filter cover 200, and the bottom has a drain port. The microporous filter membrane of the present invention is placed inside the filter housing, so that during filtration, the liquid enters between the inside of the filter housing and the outside of the microporous filter membrane, and then the filter housing is pressurized to increase the pressure inside the filter housing, forcing the liquid to move to the inside of the filter membrane body 100. At this time, the liquid passes through the outer shell 110, the filter membrane body 100 and the inner shell 120 in turn, and then is discharged through the connector 113. Since the connector 113 and the connector 130 are located at the drain port of the filter housing, the filtered liquid is discharged through the drain port.

[0053] When the filter membrane body 100 needs to be replaced, the filter top cover 200 is first removed, and then the filter membrane body 100 is taken out from the filter housing. Since the filter membrane body 100 is located inside the filter housing, when the filter housing is not removed, it indicates that the filter membrane body 100 does not need to be replaced at this time. Therefore, the top end of the pull rod 151 is against the bottom of the filter top cover 200 (see Figure 1 ), forcing the bottom end of the pull rod 151 to move downward. At this time, the compression spring 152 is also in a compressed state, and the bottom end of the pull rod 151 moves downward through the support plate 117 to press the sliding ring 116 downward. The sliding ring 116 moves downward through the arc surface of one end of the latch 115 to push the latch 115 toward the convex ring 131. At this time, the other end of the latch 115 enters the slot 132, and the convex ring 131 is locked for the second time. In this state, due to the restriction of the sliding ring 116, the latch 115 cannot be separated from the slot 132, thereby causing the connector 113 to be unable to be separated from the convex ring 131.

[0054] When the filter cover 200 is removed, the filter cover 200 is separated from the top of the pull rod 151, and the filter cover 200 no longer restricts the pull rod 151. At this time, the pull rod 151 is reset upward by the elasticity of the compression spring 152. The pull rod 151 is reset through the support plate 117 to drive the sliding ring 116 to move upward and reset, and the sliding ring 116 moves upward and separates from the latch 115. At this time, although the latch 115 is still in the slot 132, it is less restricted by the sliding ring 116. Therefore, when people pull the outer shell 110 upward, the outer shell 110 drives the connector 113 to move upward, and the connector 113 moves upward to drive the latch 115, and the latch 115 is separated from the slot 132 through the arc surface at the end, thereby realizing the quick disassembly and assembly between the connector 113 and the convex ring 131.

[0055] Considering that the filter housing is usually made of opaque material, some people may remove the filter cover 200 just to observe the clogging state of the filter membrane body 100. To this end, the present invention is optimized on the basis of the above structure, such as Figure 2 , Figure 3 and Figure 7 The example shown:

[0056] In this embodiment, a through sensing port 111 and a filter port 112 are provided on the side wall of the outer shell 110, and a through first port 121 and a second port 122 are provided on the side wall of the inner shell 120, wherein the first port 121 is provided corresponding to the sensing port 111, and the second port 122 is provided corresponding to the filter port 112; on the other hand, a sealing mechanism 140 is provided on the side wall of the outer shell 110 for longitudinal sliding, and during filtering operation, the sealing mechanism 140 seals the sensing port 111 to prevent liquid from contacting the portion of the filter membrane body 100 corresponding to the sensing port 111; when the water level in the filter shell drops, the sealing mechanism 140 opens the sensing port 111. Next, a clutch mechanism 160 is provided inside the inner shell 120 at the first opening 121 and the second opening 122. The clutch mechanism 160 controls the connection relationship between the pull rod 151 and the support plate 117 according to the filtration speed at the corresponding sensing port 111 and the second opening 122 of the filter membrane body 100; when the filtration speed at the corresponding sensing port 111 of the filter membrane body 100 is greater than the filtration speed at the corresponding filtering port 112 of the filter membrane body 100, the clutch mechanism 160 connects the pull rod 151 with the support plate 117, so that the sliding ring 116 is driven upward during the upward resetting process of the pull rod 151.

[0057] Specifically, Figure 8 and Fig. 9 As shown, the top of the support plate 117 is fixedly connected to a push rod 118, and the top of the push rod 118 is fixedly connected to a disc 119, the diameter of the disc 119 is larger than the diameter of the push rod 118, and a notch is provided on one side of the disc 119; the bottom end of the pull rod 151 is bent toward the push rod 118 to form a hook end; under normal conditions, the hook end is located directly below the notch.

[0058] like Figure 8-Figure 10As shown, the clutch mechanism 160 includes a fixed block 161 fixedly arranged on the inner ring of the inner housing 120, a first channel 162 is provided at the side wall of the fixed block 161 corresponding to the first opening 121, and a second channel 163 is provided at the side wall corresponding to the second opening 122; a first piston plate 164 is provided in the first channel 162 for transverse sliding; a driving rod 166 is fixedly connected to one side of the first piston plate 164; a guide groove 167 is provided at the top of the support plate 117, and the bottom end of the driving rod 166 penetrates into the guide groove 167; the second channel 163 is provided in A second piston plate 165 is slidably provided, and a return spring is provided between one side of the second piston plate 165 and the side wall of the second channel 163 to elastically connect the two. A groove is provided at the top of the second channel 163, and a limit rod 168 is longitudinally slidably provided in the groove. The top of the limit rod 168 is bent upward and can slide into the first channel 162. An inclined surface 169 is provided on the outer wall at the bottom of the limit rod 168. When the second piston plate 165 moves toward the limit rod 168, the second piston plate 165 pushes the limit rod 168 upward through the inclined surface 169. A through drainage hole 170 is provided at the bottom of the second channel 163, and the drainage hole 170 is located on the side of the second piston plate 165 away from the filter membrane body 100.

[0059] like Fig. 9 As shown, one end of the guide groove 167 is a straight end and the other end is an inclined end; the direction of the straight end corresponds to the moving direction of the driving rod 166; the inclined end is used to drive the sliding ring 116 to rotate through the support plate 117 when the driving rod 166 moves.

[0060] Considering that the blockage is formed over a long period of time, it is difficult to keep the time for the liquid to enter the first channel 162 and the second channel 163 consistent. Therefore, the distance between the top of the limit rod 168 and the first piston plate 164 is greater than the distance between the inclined surface 169 and the second piston plate 165. When the first piston plate 164 passes the top of the limit rod 168, the driving rod 166 is in the inclined end of the guide groove 167. In this way, since it takes a certain amount of time for the first piston plate 164 to move to the top of the limit rod 168, and the time for the second piston plate 165 to move to the inclined surface 169 is shorter, as long as the second piston plate 165 can push the limit rod 168 upward through the inclined surface 169 before the first piston plate 164 passes the top of the limit rod 168, it means that the filter membrane body 100 is not in a blocked state.

[0061] like Figure 3 and Figure 6As shown, the sealing mechanism 140 includes a retaining ring 141 slidably mounted on the outer ring of the outer shell 110, and the height of the retaining ring 141 corresponding to the sensing port 111 is greater than the height of the sensing port 111, so that the retaining ring 141 can completely cover the opening of the sensing port 111. A magnet block 144 that is magnetically attracted to the first piston plate 164 is arranged at the position of the inner ring of the retaining ring 141 corresponding to the sensing port 111; an upwardly bent connecting rod 143 is fixedly arranged on the outer ring of the retaining ring 141, and a floating ball 142 is fixedly connected to the top of the connecting rod 143.

[0062] When using, combine Fig.11 As shown:

[0063] Under normal conditions, the hook end at the bottom of the pull rod 151 is located directly below the notch. Therefore, when the pull rod 151 moves upward, the hook end at the bottom of the pull rod 151 will only pass through the notch normally. Therefore, the pull rod 151 cannot drive the sliding ring 116 to move upward during the upward movement. During filtration, since the filter port 112 is not closed, the liquid will pass through the filter port 112, the filter membrane body 100, and the second through port 122 in sequence and enter the second channel 163, and push the second piston plate 165, so that the liquid in the second channel 163 can be discharged through the drainage hole 170.

[0064] When the filter body 100 needs to be replaced, the water in the filter housing needs to be filtered first, and then the filter housing needs to be disassembled. Therefore, when the water in the filter housing gradually decreases, due to the decrease in the liquid level, the retaining ring 141 drives the float 142 to move down by its own gravity, and the retaining ring 141 moves down to between the sensing port 111 and the filter port 112. Then, since the sensing port 111 will only be opened when the liquid level decreases, and the filter port 112 is always in an open state. Therefore, when the filter body 100 is not blocked, the parts of the filter body 100 corresponding to the sensing port 111 and the filter port 112 will not be blocked; when the filter body 100 is blocked, the parts of the filter body 100 corresponding to the sensing port 111 will not be blocked, and the parts of the filter body 100 corresponding to the filter port 112 will be blocked.

[0065] When the filter membrane body 100 is not blocked, the time when the liquid passes through the filter port 112, the filter membrane body 100, and the second port 122 and enters the second channel 163 is close to the time when the liquid passes through the sensing port 111, the filter membrane body 100, and the first port 121 and enters the first channel 162. At this time, the liquid in the second channel 163 pushes the second piston plate 165 to move, and the second piston plate 165 moves through the inclined surface 169 to push the limit rod 168 upward. At this time, the limit rod 168 moves upward to block the first piston plate 164, so that the first piston plate 164 cannot continue to move. At this time, the first piston plate 164 cannot drive the sliding ring 116 to rotate through the driving rod 166. In this state, the upward movement of the pull rod 151 will not drive the sliding ring 116.

[0066] When the filter membrane body 100 is blocked, the time taken for the liquid to enter the second channel 163 after passing through the filter port 112, the filter membrane body 100, and the second port 122 is slower than the time taken for the liquid to enter the first channel 162 after passing through the sensing port 111, the filter membrane body 100, and the first port 121. Therefore, the liquid in the first channel 162 will first push the first piston plate 164 over the top of the limit rod 168, so that the first piston plate 164 can continue to move forward. At this time, the movement of the first piston plate 164 drives the driving rod 166 to move. When the driving rod 166 moves to the inclined end of the guide groove 167, the driving rod 166 drives the support plate 117 to rotate through the inclined end, and the support plate 117 drives the sliding ring 116 to rotate. The rotation of the sliding ring 116 drives the top rod 118 and the disc 119 to rotate. The rotation of the disc 119 drives the notch to rotate, and the notch rotates and disengages from the top of the hook end of the pull rod 151. At this time, when the pull rod 151 moves upward, it can drive the sliding ring 116 to move upward by pulling the disc 119 .

[0067] When the liquid level rises, the float 142 uses its own buoyancy to drive the retaining ring 141 to move upward, and the retaining ring 141 moves upward to move the magnet block 144 to the front of the first piston plate 164. At this time, the magnet block 144 attracts the first piston plate 164 to reset, and the first piston plate 164 drives the drive rod 166 to reset to the straight end of the guide groove 167. At this time, the notch at the disc 119 also rotates again to above the bent hook end of the pull rod 151.

[0068] It can be seen that this embodiment monitors the speed at which the liquid passes through the corresponding sensing port 111 and filter port 112 of the filter membrane body 100, and controls the connection relationship between the pull rod 151 and the sliding ring 116 according to the difference in the passing speed therebetween, so that the secondary locking between the connector 113 and the connector 130 will be released only when the filter membrane body 100 is blocked, thereby further improving the stability of the connection between the connector 113 and the connector 130.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A microporous filter membrane capable of rapid assembly and disassembly, comprising a filter membrane body (100), an outer shell (110) arranged at the outer ring of the filter membrane body (100), an inner shell (120) arranged at the inner ring of the filter membrane body (100), and a connector (130) fixedly arranged inside the filter shell; the outer shell (110) and the inner shell (120) are both tubular structures with two ends through, and the side walls of the outer shell (110) and the inner shell (120) are both hollow structures; the top of the outer shell (110) is fixedly connected to a cover plate (114) in a detachable manner; the bottom of the outer shell (110) is fixedly connected to a connector (113), characterized in that: The bottom end of the connector (113) is plugged into and matched with a connector (130), and the connector (130) is connected to a drain port inside the filter housing; A secondary locking mechanism is provided between the connector (113) and the connector (130); an unlocking mechanism (150) is provided through the top of the cover plate (114); the top of the unlocking mechanism (150) extends to the bottom of the filter top cover (200) and is used to sense the state of the filter top cover (200); The secondary locking mechanism comprises a latch (115) that slides through a side wall of the connector (113); when the filter top cover (200) is not disassembled, the unlocking mechanism (150) restricts the latch (115) through the filter top cover (200) to a state in which one end is located in the connector (113) and the other end extends into the connector (130), so as to perform secondary locking between the connector (113) and the connector (130); when the filter top cover (200) is disassembled, the unlocking mechanism (150) is freed from the restriction on the latch (115), so that the connector (113) and the connector (130) are restored to a plugged state; The connecting piece (130) is an annular plate-like structure, and the inner ring is connected to the drain port and protrudes upward to form a convex ring (131); the inner ring of the convex ring (131) is provided with a plurality of slots (132) for the plug pins (115) to penetrate; The outer diameter of the connector (113) is consistent with the inner diameter of the convex ring (131), so that the connector (113) can be inserted into the interior of the convex ring (131); A sliding groove extending transversely therethrough is provided at a portion of the side wall of the connector (113) corresponding to the slot (132), the latch (115) being slidably disposed in the sliding groove, the length of the latch (115) being greater than the thickness of the side wall of the connector (113), and both ends of the latch (115) being arc-shaped structures; The secondary locking structure also includes a sliding ring (116) longitudinally movably arranged on the inner ring of the connecting head (113); when the sliding ring (116) moves downward, the sliding ring (116) pushes the latch (115) into the slot (132) through the arc surface at the end of the latch (115); a support plate (117) is fixedly connected to the top of the sliding ring (116); The unlocking mechanism (150) comprises a pull rod (151) that slides longitudinally through the cover plate (114); the bottom end of the pull rod (151) is connected to the support plate (117), and a compression spring (152) is provided between the top end and the top of the cover plate (114) to elastically connect the two; when the compression spring (152) is not compressed, the height of the top end of the pull rod (151) is higher than the height of the filter top cover (200) after installation; The side wall of the outer shell (110) is provided with a through-going induction port (111) and a filter port (112), and the side wall of the inner shell (120) is provided with a through-going first through port (121) and a second through port (122), wherein the first through port (121) is provided corresponding to the induction port (111), and the second through port (122) is provided corresponding to the filter port (112); The side wall of the outer shell (110) is longitudinally slidably provided with a sealing mechanism (140). During filtering operation, the sealing mechanism (140) seals the sensing port (111) to prevent liquid from contacting the portion of the filter membrane body (100) corresponding to the sensing port (111); when the water level in the filter shell drops, the sealing mechanism (140) opens the sensing port (111); A clutch mechanism (160) is provided inside the inner shell (120) at the first opening (121) and the second opening (122). The clutch mechanism (160) controls the connection relationship between the pull rod (151) and the support plate (117) according to the filtering speed at the corresponding sensing port (111) and the second opening (122) of the filter membrane body (100). When the filtering speed at the corresponding sensing port (111) of the filter membrane body (100) is greater than the filtering speed at the corresponding filtering port (112) of the filter membrane body (100), the clutch mechanism (160) connects the pull rod (151) with the support plate (117), so that the pull rod (151) drives the sliding ring (116) to move upward during the upward resetting process. The top of the support plate (117) is fixedly connected to a push rod (118), the top of the push rod (118) is fixedly connected to a disc (119), the diameter of the disc (119) is larger than the diameter of the push rod (118), and a notch is provided on one side of the disc (119); the bottom end of the pull rod (151) is bent toward the push rod (118) to form a hook end; in a normal state, the hook end is located directly below the notch; The clutch mechanism (160) comprises a fixed block (161) fixedly arranged on the inner ring of the inner shell (120); a first through-channel (162) is arranged at a side wall of the fixed block (161) corresponding to the first through-channel (121); and a second through-channel (163) is arranged at a side wall of the fixed block (161) corresponding to the second through-channel (122); A first piston plate (164) is transversely slidably disposed in the first channel (162); a driving rod (166) is fixedly connected to one side of the first piston plate (164); a guide groove (167) is provided through the top of the support plate (117), and the bottom end of the driving rod (166) penetrates into the guide groove (167); A second piston plate (165) is slidably disposed in the second channel (163), and a return spring is disposed between one side of the second piston plate (165) and a side wall of the second channel (163) to elastically connect the two. A groove is provided at the top of the second channel (163), and a limit rod (168) is longitudinally slidably provided in the groove. The top end of the limit rod (168) is bent upward and can slide into the first channel (162). An inclined surface (169) is provided on the outer wall of the bottom of the limit rod (168). When the second piston plate (165) moves toward the limit rod (168), the second piston plate (165) pushes the limit rod (168) upward via the inclined surface (169). A through drainage hole (170) is provided at the bottom of the second channel (163), and the drainage hole (170) is located on a side of the second piston plate (165) away from the filter membrane body (100).

2. The microporous filter membrane capable of rapid disassembly and assembly according to claim 1, characterized in that: One end of the guide groove (167) is a straight end, and the other end is an inclined end; the direction of the straight end corresponds to the moving direction of the driving rod (166); the inclined end is used to drive the sliding ring (116) to rotate through the support plate (117) when the driving rod (166) moves.

3. The microporous filter membrane capable of rapid disassembly and assembly according to claim 1, characterized in that: The distance between the top end of the limiting rod (168) and the first piston plate (164) is greater than the distance between the inclined surface (169) and the second piston plate (165); when the first piston plate (164) passes the top end of the limiting rod (168), the driving rod (166) is located in the inclined end of the guide groove (167).

4. The microporous filter membrane capable of rapid disassembly and assembly according to claim 1, characterized in that: The sealing mechanism (140) comprises a retaining ring (141) slidably mounted on the outer ring of the outer shell (110); the height of the retaining ring (141) corresponding to the sensing port (111) is greater than the height of the sensing port (111); a magnet block (144) magnetically attracted to the first piston plate (164) is arranged at a portion of the inner ring of the retaining ring (141) corresponding to the sensing port (111); and an upwardly bent connecting rod (143) is fixedly arranged on the outer ring of the retaining ring (141); a floating ball (142) is fixedly connected to the top of the connecting rod (143).

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