A swimming pool filter cartridge having a multi-stage sealing mechanism

Abstract

The application relates to the technical field of swimming pool filter cartridges, and proposes a swimming pool filter cartridge with a multistage sealing mechanism, which comprises an upper end cover, a lower end cover, a metal mesh frame and folded filter cartridge paper, multistage sealing assemblies are arranged on the upper end cover and the lower end cover, a first positioning groove is formed through the metal mesh frame, the upper and lower end faces of the folded filter cartridge paper are respectively attached to the upper end cover and the lower end cover, a second positioning groove is formed in the lower end cover, a multifunctional filtering assembly is connected to the lower end cover, the multistage sealing assembly comprises a fixing ring, the upper end cover and the lower end cover are fixedly connected with the fixing ring, and a first sealing ring is fixedly connected to the outer wall of the fixing ring. Through the technical scheme, the swimming pool filter cartridge in the prior art cannot perform multistage sealing treatment on the connecting positions of various components, cannot perform multistage filtering and purification treatment on swimming pool water, and cannot replace the filtering mechanism according to actual use conditions.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of swimming pool filter cartridges, and in particular to a swimming pool filter cartridge with a multistage sealing mechanism. BACKGROUND

[0002] With the increasing improvement of people's living standards, swimming pools, as important facilities for leisure and fitness and entertainment, have been widely welcomed. Whether it is a private residential swimming pool, a community public swimming pool or a commercial water park, the number is rising. The swimming pool filter cartridge is an important part of the swimming pool filtration system, mainly used for cleaning swimming pool water, removing impurities, fine particles and pollutants in the water, and ensuring clean and safe swimming pool water.

[0003] However, the existing swimming pool filter cartridges have some problems in actual work, such as a new type of swimming pool filter cartridge with publication No. CN114797221A. Although the filter cartridge can be conveniently disassembled through the clamping mechanism, the sealing performance is poor, and the connection between the components cannot be sealed in multiple stages. Therefore, unfiltered water can easily bypass the normal filtration process from the gap between the components or the connection part and directly mix with the filtered water, resulting in poor filtration effect. In addition, the existing swimming pool filter cartridges cannot perform multistage filtration and purification on the swimming pool water, and cannot replace the filtration mechanism alone according to the actual use condition, so the practicality is poor. Therefore, a swimming pool filter cartridge with a multistage sealing mechanism is needed to meet the needs of users. SUMMARY

[0004] The technical problem to be solved by the application is to overcome the deficiencies in the prior art and provide a swimming pool filter cartridge with a multistage sealing mechanism.

[0005] The application is implemented by the following technical solutions:

[0006] A swimming pool filter cartridge with a multistage sealing mechanism, comprising an upper end cover, a lower end cover, a metal mesh frame and a folded filter cartridge paper, a multistage sealing assembly is installed on the upper end cover and the lower end cover, a first positioning groove is formed through the metal mesh frame, the upper and lower end faces of the folded filter cartridge paper are respectively attached to the upper end cover and the lower end cover, a second positioning groove is formed on the lower end cover, a multifunctional filtration assembly is connected to the lower end cover, the multistage sealing assembly comprises a fixing ring, the upper end cover and the lower end cover are fixedly connected with the fixing ring, a first sealing ring is fixedly connected to the outer wall of the fixing ring, a second sealing ring is fixedly connected to the inner wall of the fixing ring, a first positioning rod is welded and fixed on the fixing ring, the first positioning rod is slidingly connected in the first positioning groove, a fixed plate is fixedly connected to the upper end cover and the lower end cover, and a rubber air bag is fixedly connected to the fixed plate.

[0007] As a preferred scheme of the present application, wherein: the upper end cover and the lower end cover are both matched with the metal mesh frame, the metal mesh frame is provided with two, the cross section of the metal mesh frame is semicircular ring shape, the first positioning slot is symmetrically distributed on the upper and lower sides of the metal mesh frame, and the first positioning rod is symmetrically distributed on the two sides of the fixing ring.

[0008] As a preferred scheme of the present application, wherein: the first positioning rod is welded with the first spring, the first spring is welded with the stopper, the stopper is limitingly and slidingly connected in the first positioning rod, the stopper is symmetrically distributed on the two sides of the first positioning rod, the end of the stopper is in the shape of right trapezoid in cross section, the upper end cover and the lower end cover are both provided with the gas storage groove, the upper end cover and the lower end cover are both provided with the through groove, the second spring is fixedly connected in the gas storage groove, and the first rubber piston is fixedly connected on the second spring.

[0009] As a preferred scheme of the present application, wherein: the gas storage groove, the first rubber piston and the rubber air bag are all in the shape of circular ring, the first rubber piston is matched with the inner wall of the gas storage groove, the first rubber piston is fixedly connected with the push block, the end of the push block is in the shape of right triangle in cross section, the push block is slidingly connected in the through groove, the push block is symmetrically distributed on the two sides of the first rubber piston, the push block is in one-to-one correspondence with the through groove, the upper end cover and the lower end cover are both fixedly connected with the gas guide pipe, one end of the gas guide pipe is connected with the gas storage groove, and the other end of the gas guide pipe is connected with the rubber air bag.

[0010] As a preferred scheme of the present application, wherein: the multifunctional filtering assembly comprises the first mesh tube and the limiting groove, the inner bottom end face of the first mesh tube is fixedly connected with the sealing ring, the bottom center part of the first mesh tube is provided with the drain hole, the bottom two sides of the first mesh tube are fixedly connected with the second positioning rod, the second positioning rod is clamped and connected in the second positioning slot, the second positioning rod is in one-to-one correspondence with the second positioning slot, the top of the first mesh tube is provided with the first clamping slot, the first clamping slot is symmetrically distributed on the two sides of the first mesh tube, the rubber frame is slidingly connected in the first mesh tube, and the cover plate is fixedly connected in the rubber frame.

[0011] As a preferred scheme of the present application, wherein: the rubber frame is matched with the inner wall of the first mesh tube, the top center part of the cover plate is welded with the pull plate, the cover plate is limitingly and slidingly connected with the connecting plate, the connecting plate is welded with the third spring, the third spring is welded in the cover plate, and the bottom of the connecting plate is welded with the first clamping rod and the second clamping rod.

[0012] As a preferred scheme of the present application, wherein: the connecting plate is symmetrically distributed on both sides of the cover plate, the first clamping rod and the second clamping rod are symmetrically distributed on the bottom of the connecting plate, the first clamping rod is slidably connected in the rubber frame and the cover plate, the second clamping rod is limitingly and slidably connected in the cover plate, and the end of the first clamping rod is clamped and connected in the first clamping groove.

[0013] As a preferred scheme of the present application, wherein: the limiting groove is arranged at the bottom center of the rubber frame and the cover plate, the limiting rod is limitingly and slidably connected in the limiting groove, the second clamping groove is arranged at the top of the limiting rod, the support rod is welded and fixed at the bottom of the limiting rod, the second mesh tube is fixedly connected to the support rod, the activated carbon filler is filled in the second mesh tube, the second mesh tube is made of ceramic filter mesh material, and the first mesh tube is made of glass fiber filter mesh material.

[0014] As a preferred scheme of the present application, wherein: the first mesh tube is fixedly connected with the plug rod, the plug rod is fixedly connected with the second rubber piston, the second rubber piston is limitingly and slidably connected in the sleeve, the cross section of the second rubber piston and the sleeve are both rectangular, the sleeve is welded and fixed with the support plate, the support plate is welded and fixed with the fourth spring, the fourth spring is fixedly connected with the second rubber piston, the sleeve is provided with the reflux hole at the top and the bottom, the plug rod is provided with four groups, the four groups of plug rods are equiangularly distributed on the first mesh tube, each group of plug rods is equidistantly distributed on the first mesh tube, the plug rod is corresponding to the support plate through the sleeve, the sleeve is fixed at the middle part of the support plate, and the cross section of the support plate is arc-shaped.

[0015] As a preferred scheme of the present application, wherein: the center part of the upper end cover is provided with the receiving groove, the rubber plate is fixedly connected in the receiving groove, the rubber plate is symmetrically distributed on both sides of the receiving groove, and the rubber plates on both sides are attached to each other, and the center part of the lower end cover is fixedly connected with the water outlet pipe.

[0016] The working principle and beneficial effects of the present application are as follows:

[0017] 1. The metal mesh frame and the first positioning groove are arranged in the present application, the first positioning rod and the first positioning groove are matched, the stop block is combined, the assembly and disassembly of the upper end cover, the lower end cover and the metal mesh frame can be conveniently and stably completed, at the same time, the first mesh tube and the folded filter paper can be assembled on the upper end cover and the lower end cover through the cooperation of the second positioning rod and the second positioning groove, the installation efficiency of the swimming pool filter core is effectively improved, each component can be conveniently disassembled and assembled, each component can be replaced individually, the maintenance and cleaning efficiency of the swimming pool filter core is effectively improved, the service life of the swimming pool filter core is improved, and the maintenance cost of the swimming pool filter core is reduced.

[0018] 2、The multi-stage sealing assembly is arranged in the application, in the assembling and installing process of the upper end cover, the lower end cover and the metal mesh frame, the metal mesh frame can push the push block to move to the inside of the gas storage groove automatically, the automatic inflation of the rubber air bag can be realized in combination with the first rubber piston, the connection sealing between the upper end cover, the lower end cover and the metal mesh frame and the connection sealing between the upper end cover, the lower end cover and the folded filter paper can be automatically completed in cooperation with the first sealing ring and the second sealing ring, the connection sealing between the upper end cover, the lower end cover and the first mesh cylinder can be completed, the multi-stage sealing treatment of the connection parts of various components is realized, the sealing performance of the pool filter core as a whole is effectively improved, the unfiltered water is prevented from bypassing the normal filtering process through the gaps or connection parts of the components and directly mixing into the filtered water, so that the filtering effect is ensured, and the pool water reaches the expected purification standard.

[0019] 3、The multifunctional filtering assembly is arranged in the application, the larger solid impurities, such as leaves, insects and hair, in the pool water can be effectively intercepted by the metal mesh frame, so that the subsequent filtering components are protected, then the first mesh cylinder made of the folded filter paper, the glass fiber filter screen material and the ceramic filter screen material and the activated carbon filled inside can realize the rough filtering to the fine filtering and then to the adsorption purification of the pool water, so that various impurities in the pool water can be effectively removed, the cleanliness and hygiene of the pool water are ensured, at the same time, under the joint action of the plug rod, the second rubber piston and the sleeve, in combination with the backflow hole and the water flowing into the inside of the sleeve, the hydraulic buffer assembly can be formed, the flexible folded filter paper can be automatically and stably supported and protected by the supporting plate, the folded filter paper is prevented from collapsing to the center when subjected to the water flow pressure, the overall shape of the filter core is maintained, the stability of the filtering channel is ensured, and the water flow can uniformly pass through the folded filter paper.

[0020] 4、The first clamping rod and the second clamping rod are arranged in the application, the disassembly and separation between the cover plate and the first mesh cylinder and the clamping and fixing between the cover plate and the limiting rod can be simultaneously completed by moving the connecting plates on both sides to the middle, so that the separate disassembly of the second mesh cylinder can be conveniently and stably completed, the activated carbon filler in the second mesh cylinder can be conveniently and stably replaced by separately disassembling the second mesh cylinder, the convenient and high-frequency replacement work of the activated carbon filler can be realized without disassembling the filter core as a whole, and the use diversity and convenience of the pool filter core are increased. DRAWINGS

[0021] Figure 1 is the overall structure schematic diagram of the application;

[0022] Figure 2 is the lower end cover and water outlet pipe connection structure schematic diagram of the application;

[0023] Figure 3 is the overall main section structure schematic diagram of the application;

[0024] Figure 4 is the schematic diagram of the metal mesh frame and sealing strip connection structure of the present application;

[0025] Figure 5 is the schematic diagram of the first spring and stopper connection structure of the present application;

[0026] Figure 6 is the schematic diagram of the present application Figure 3 is the enlarged structure schematic diagram of A in the present application;

[0027] Figure 7 is the schematic diagram of the present application Figure 3 is the enlarged structure schematic diagram of B in the present application;

[0028] Figure 8 is the schematic diagram of the present application Figure 3 is the enlarged structure schematic diagram of C in the present application;

[0029] Figure 9 is the schematic diagram of the fixed ring and first sealing ring connection structure of the present application;

[0030] Figure 10 is the schematic diagram of the fixed plate and rubber air bag connection structure of the present application;

[0031] Figure 11 is the schematic diagram of the first rubber piston and push block connection structure of the present application;

[0032] Figure 12 is the schematic diagram of the limiting rod and second clamping groove connection structure of the present application;

[0033] Figure 13 is the schematic diagram of the cover plate and pull plate connection structure of the present application.

[0034] In the figure: 1, upper end cover; 2, lower end cover; 3, multi-stage sealing assembly; 301, fixed ring; 302, first sealing ring; 303, second sealing ring; 304, first positioning rod; 305, first spring; 306, stop block; 307, gas storage groove; 308, through groove; 309, second spring; 310, first rubber piston; 311, push block; 312, gas guide pipe; 313, fixed plate; 314, rubber air bag; 4, metal mesh frame; 5, first positioning groove; 6, folded filter paper; 7, storage groove; 8, rubber plate; 9, multifunctional filter assembly; 901, first mesh tube; 902, sealing ring; 903, drain hole; 904, second positioning rod; 905, first clamping groove; 906, rubber frame; 907, cover plate; 908, pull plate; 909, connecting plate; 910, third spring; 911, first clamping rod; 912, second clamping rod; 913, limiting groove; 914, limiting rod; 915, second clamping groove; 916, supporting rod; 917, second mesh tube; 918, plug rod; 919, second rubber piston; 920, sleeve; 921, supporting plate; 922, fourth spring; 923, backflow hole; 10, second positioning groove; 11, water outlet pipe; 12, sealing strip. DETAILED DESCRIPTION

[0035] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the drawings and the best embodiment. All other embodiments obtained by those skilled in the art on the basis of the embodiments of the present application without creative labor shall fall within the scope of protection of the present application.

[0036] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] In addition, it should be noted that in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "setting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0038] Example 1: as Figures 1-13As shown, the embodiment proposes a swimming pool filter cartridge with multi-stage sealing mechanism, comprising an upper end cover 1, a lower end cover 2, a metal mesh frame 4 and a folded filter cartridge paper 6, a multi-stage sealing assembly 3 is installed on the upper end cover 1 and the lower end cover 2, a first positioning groove 5 is provided through the metal mesh frame 4, the upper and lower end faces of the folded filter cartridge paper 6 are respectively attached to the upper end cover 1 and the lower end cover 2, a second positioning groove 10 is provided on the lower end cover 2, a multifunctional filtering assembly 9 is connected to the lower end cover 2, the multi-stage sealing assembly 3 comprises a fixed ring 301, the upper end cover 1 and the lower end cover 2 are fixedly connected with the fixed ring 301, the outer wall of the fixed ring 301 is fixedly connected with a first sealing ring 302, the inner wall of the fixed ring 301 is fixedly connected with a second sealing ring 303, a first positioning rod 304 is welded and fixed on the fixed ring 301, the first positioning rod 304 is slidingly connected in the first positioning groove 5, the upper end cover 1 and the lower end cover 2 are fixedly connected with a fixed plate 313, the fixed plate 313 is fixedly connected with a rubber air bag 314, the multi-stage sealing assembly 3 can realize multi-stage sealing treatment of the connection between each component, effectively improve the sealing performance of the swimming pool filter cartridge as a whole, prevent unfiltered water from bypassing the normal filtering process through the gap between the components or the connection part and directly mixing into the filtered water, thereby ensuring the filtering effect and making the swimming pool water reach the expected purification standard, and each component can be conveniently disassembled and replaced, effectively improving the maintenance and cleaning efficiency of the swimming pool filter cartridge, prolonging the service life of the swimming pool filter cartridge, and reducing the maintenance cost of the swimming pool filter cartridge; and in combination with the multifunctional filtering assembly 9, the swimming pool water can be coarsely filtered, then finely filtered, and then adsorbed and purified, thereby effectively removing various impurities in the swimming pool water and ensuring the cleanliness and hygiene of the swimming pool water.

[0039] Embodiment 2: as Figures 1-13 shown, based on the same idea as the above embodiment 1, the embodiment also proposes a swimming pool filter cartridge with multi-stage sealing mechanism.

[0040] In this embodiment, a receiving groove 7 is provided through the center of the upper end cover 1, a rubber plate 8 is fixedly connected in the receiving groove 7, the rubber plates 8 are symmetrically distributed on both sides of the receiving groove 7, and the rubber plates 8 on both sides are attached to each other, and an outlet pipe 11 is fixedly connected to the center of the lower end cover 2, so that the subsequent active carbon replacement work is convenient, and the rubber plate 8 can conveniently and stably seal and protect the receiving groove 7.

[0041] In the embodiment, the upper end cover 1 and the lower end cover 2 are in close contact with the metal mesh frame 4, the metal mesh frame 4 is provided with two, the cross section of the metal mesh frame 4 is a semi-circular ring, the left and right sides of the metal mesh frame 4 are fixedly connected with sealing strips 12, the first positioning grooves 5 are symmetrically distributed on the upper and lower sides of the metal mesh frame 4, the first positioning rods 304 are symmetrically distributed on the two sides of the fixed ring 301, the first springs 305 are welded and fixed in the first positioning rods 304, the stop blocks 306 are welded and fixed on the first springs 305, the stop blocks 306 are limitingly and slidably connected in the first positioning rods 304, the stop blocks 306 are symmetrically distributed on the two sides of the first positioning rods 304, the end cross section of the stop block 306 is a right trapezoid, and the cooperation of the first positioning rods 304 and the first positioning grooves 5, combined with the stop blocks 306, can conveniently and stably complete the assembly and disassembly of the upper end cover 1, the lower end cover 2 and the metal mesh frame 4.

[0042] In the embodiment, the upper end cover 1 and the lower end cover 2 are in close contact with the metal mesh frame 4, the metal mesh frame 4 is provided with two, the cross section of the metal mesh frame 4 is a semi-circular ring, the left and right sides of the metal mesh frame 4 are fixedly connected with sealing strips 12, the first positioning grooves 5 are symmetrically distributed on the upper and lower sides of the metal mesh frame 4, the first positioning rods 304 are symmetrically distributed on the two sides of the fixed ring 301, the first springs 305 are welded and fixed in the first positioning rods 304, the stop blocks 306 are welded and fixed on the first springs 305, the stop blocks 306 are limitingly and slidably connected in the first positioning rods 304, the stop blocks 306 are symmetrically distributed on the two sides of the first positioning rods 304, the end cross section of the stop block 306 is a right trapezoid, and the cooperation of the first positioning rods 304 and the first positioning grooves 5, combined with the stop blocks 306, can conveniently and stably complete the assembly and disassembly of the upper end cover 1, the lower end cover 2 and the metal mesh frame 4.

[0043] In the embodiment, the multifunctional filter assembly 9 comprises a first mesh cylinder 901 and a limiting groove 913, the first mesh cylinder 901 is attached to the upper end cover 1 and the lower end cover 2 respectively, a sealing ring 902 is fixedly connected to the inner bottom end face of the first mesh cylinder 901, a drain hole 903 is penetratingly arranged at the bottom center of the first mesh cylinder 901, second positioning rods 904 are fixedly connected to the bottom sides of the first mesh cylinder 901, the second positioning rods 904 are clamped and connected in the second positioning grooves 10, the second positioning rods 904 correspond to the second positioning grooves 10 one by one, first clamping grooves 905 are arranged at the top of the first mesh cylinder 901, the first clamping grooves 905 are symmetrically distributed on the two sides of the inside of the first mesh cylinder 901, a rubber frame 906 is slidingly connected in the first mesh cylinder 901, a cover plate 907 is fixedly connected in the rubber frame 906, the rubber frame 906 is attached to the inner wall of the first mesh cylinder 901, the diameter of the storage groove 7 is smaller than the outer diameter of the first mesh cylinder 901, the diameter of the storage groove 7 is larger than the outer diameter of the rubber frame 906, a pull plate 908 is welded and fixed to the top center of the cover plate 907, a connecting plate 909 is limitingly and slidingly connected to the cover plate 907, a third spring 910 is welded and fixed to the connecting plate 909, the third spring 910 is welded and fixed in the cover plate 907, first and second clamping rods 911 and 912 are welded and fixed to the bottom of the connecting plate 909, during the installation process of the metal mesh frame 4, the first mesh cylinder 901 and the folded filter paper 6 can be simultaneously assembled and installed on the upper end cover 1 and the lower end cover 2 in combination with the second positioning rods 904 and the second positioning grooves 10.

[0044] In the embodiment, the first clamping rod 911 is slidingly connected in the rubber frame 906 and the cover plate 907, the second clamping rod 912 is limitingly and slidingly connected in the cover plate 907, the end of the first clamping rod 911 is clamped and connected in the first clamping groove 905, the connecting plate 909 is symmetrically distributed on the two sides of the cover plate 907, the first and second clamping rods 911 and 912 are symmetrically distributed on the two sides of the bottom of the connecting plate 909, the limiting groove 913 is arranged at the bottom center of the rubber frame 906 and the cover plate 907, a limiting rod 914 is limitingly and slidingly connected in the limiting groove 913, second clamping grooves 915 are arranged at the top two sides of the limiting rod 914, supporting rods 916 are welded and fixed to the bottom two sides of the limiting rod 914, a second mesh cylinder 917 is fixedly connected to the supporting rods 916, the outer wall of the second mesh cylinder 917 is attached to the inner wall of the sealing ring 902, activated carbon filler is filled in the second mesh cylinder 917, the second mesh cylinder 917 is made of ceramic filter screen material, the first mesh cylinder 901 is made of glass fiber filter screen material, the metal mesh frame 4 can effectively intercept larger solid impurities in the swimming pool water, such as leaves, insects, hair, etc., to protect the subsequent filter components; then in combination with the folded filter paper 6, the first mesh cylinder 901 made of glass fiber filter screen material, the second mesh cylinder 917 made of ceramic filter screen material and the activated carbon filled inside, the swimming pool water can be coarsely filtered, finely filtered and then adsorbed and purified, so that various impurities in the swimming pool water can be effectively removed, to ensure the cleanliness and sanitation of the swimming pool water.

[0045] In the embodiment, the first mesh tube 901 is fixedly connected with a plug rod 918, the plug rod 918 is fixedly connected with a second rubber piston 919, the second rubber piston 919 is limitingly and slidingly connected in a sleeve 920, the cross section of the second rubber piston 919 and the cross section of the sleeve 920 are both rectangular, the sleeve 920 is welded with a support plate 921, the support plate 921 is welded with a fourth spring 922, the fourth spring 922 is fixedly connected with the second rubber piston 919, the sleeve 920 is provided with return flow holes 923 on the upper and lower sides, the plug rod 918 is provided with four groups, the four groups of plug rods 918 are equally angularly distributed on the first mesh tube 901, each group of plug rods 918 is equally angularly distributed on the first mesh tube 901, the plug rod 918 is one-to-one corresponding to the support plate 921 through the sleeve 920, the sleeve 920 is fixed at the middle part of the support plate 921, the cross section of the support plate 921 is arc-shaped, the support plate 921 is in close contact with the inner wall of the folded filter paper 6, under the joint action of the plug rod 918, the second rubber piston 919 and the sleeve 920, in combination with the return flow holes 923 and the water flowing into the inside of the sleeve 920, a hydraulic buffer assembly can be formed, and the flexible folded filter paper 6 can be automatically and stably supported and protected through the support plate 921.

[0046] It should be noted that the present application is a swimming pool filter cartridge with a multi-stage sealing mechanism. First, the staff can deliver the activated carbon filler into the second mesh tube 917, then place the rubber frame 906 and the cover plate 907 on the top of the second mesh tube 917, at this time the limiting rod 914 on the second mesh tube 917 can be stably inserted into the limiting groove 913 in the rubber frame 906 and the cover plate 907, then push the connecting plates 909 on both sides to move to the middle, at this time the connecting plates 909 can drive the second clamping rod 912 to be clamped into the second clamping groove 915 on the limiting rod 914, at the same time, the second mesh tube 917 can be lifted and placed into the first mesh tube 901 by pulling the pull plate 908 upward under the joint action of the limiting rod 914 and the supporting rod 916, then the connecting plates 909 can be released, at this time the connecting plates 909 can be automatically moved to the side and reset under the elastic action of the third spring 910, at the same time, the connecting plates 909 can drive the first clamping rod 911 to be automatically clamped into the first clamping groove 905 in the first mesh tube 901, the clamping and fixing of the first mesh tube 901 and the first mesh tube 901 are completed, and the second mesh tube 917 can be sealed and installed in the first mesh tube 901.

[0047] Then the staff can put the first mesh tube 901 on the lower end cover 2, and insert the second positioning rod 904 at the bottom of the first mesh tube 901 into the second positioning groove 10 on the lower end cover 2 to complete the clamping positioning. At this time, the folded filter paper 6 can be sleeved on the first mesh tube 901 to complete the positioning and placement of the folded filter paper 6. Then the upper end cover 1 can be placed on the folded filter paper 6 and the top of the first mesh tube 901.

[0048] After the upper end cover 1, the lower end cover 2, the first mesh tube 901 and the folded filter paper 6 are placed stably, the staff can place a metal mesh frame 4 between the upper end cover 1 and the lower end cover 2, and push the metal mesh frame 4 towards the fixed ring 301, while inserting the first positioning rod 304 on the fixed ring 301 into the first positioning groove 5 on the metal mesh frame 4. At this time, the metal mesh frame 4 first contacts the inclined surface of the stop block 306, and under the action of the movement of the metal mesh frame 4, the stop block 306 can be automatically moved into the first positioning rod 304 until the first positioning rod 304 is inserted into the first positioning groove 5, and the stop block 306 passes through the first positioning groove 5. At this time, under the elastic action of the first spring 305, the stop block 306 can be automatically moved outward to reset. The combination of the first positioning rod 304 and the first positioning groove 5 can complete the clamping installation between the upper end cover 1, the lower end cover 2 and the metal mesh frame 4. Through the same operation as above, the other metal mesh frame 4 is clamped and installed between the upper end cover 1 and the lower end cover 2. The two metal mesh frames 4 are combined with the sealing strip 12 to splice each other, and the upper end cover 1 and the lower end cover 2 can complete the assembly and installation of the first mesh tube 901 and the folded filter paper 6.

[0049] During the installation of the metal mesh frame 4, when the metal mesh frame 4 moves towards the upper end cover 1 and the lower end cover 2, it can first contact the inclined surface of the push block 311 and push the push block 311 towards the inside of the gas storage groove 307. Under the action of the movement of the push block 311, the first rubber piston 310 can be pushed towards the inside of the gas storage groove 307, and then the air in the gas storage groove 307 can be delivered to the rubber air bag 314 on the fixed plate 313 through the air guide pipe 312, so as to realize the automatic inflation of the rubber air bag 314.

[0050] At this time, under the cooperation of the first sealing ring 302 and the second sealing ring 303, the connection and sealing between the upper end cover 1, the lower end cover 2 and the metal mesh frame 4 can be automatically completed; under the cooperation of the second sealing ring 303 and the rubber air bag 314, the connection and sealing between the upper end cover 1, the lower end cover 2 and the folded filter paper 6 can be automatically completed; and under the action of the rubber air bag 314, the connection and sealing between the upper end cover 1, the lower end cover 2 and the first mesh cylinder 901 can be automatically completed by rotation; at the same time, multi-stage sealing treatment is realized at the connection of each component, which effectively improves the sealing performance of the swimming pool filter core as a whole, prevents unfiltered water from bypassing the normal filtering process through the gaps or connection parts of the components, and directly mixes into the filtered water, thereby ensuring the filtering effect and making the swimming pool water reach the expected purification standard.

[0051] During the working process of the swimming pool filter core, the metal mesh frame 4 can effectively intercept larger solid impurities in the swimming pool water, such as leaves, insects, hair, etc., to protect the subsequent filtering components; then, in combination with the folded filter paper 6, the first mesh cylinder 901 made of glass fiber filter mesh material, the second mesh cylinder 917 made of ceramic filter mesh material and the activated carbon filled inside, the swimming pool water can be coarsely filtered, then finely filtered, and then adsorbed and purified, thereby effectively removing various impurities in the swimming pool water to ensure the cleanliness and hygiene of the swimming pool water. The filtered and purified water can be discharged through the drain hole 903 and the water outlet pipe 11; and during the working process of the swimming pool filter core, the water flow can automatically enter the sleeve 920 through the backflow hole 923, at this time, the plug rod 918, the second rubber piston 919, the sleeve 920, the fourth spring 922, the backflow hole 923 and the water in the sleeve 920 can form a hydraulic buffer assembly, which can automatically and stably support the inner wall of the flexible folded filter paper 6 through the supporting plate 921, prevent the folded filter paper 6 from collapsing towards the center when subjected to water flow pressure, maintain the overall shape of the filter core, ensure the stability of the filtering channel, and make the water flow pass through the folded filter paper 6 uniformly.

[0052] Since the activated carbon needs to be frequently replaced during use, the staff only needs to push away the rubber plates 8 on both sides inside the storage groove 7, and through the same operation as described above, the connecting plates 909 on both sides of the cover plate 907 are moved to the middle, at this time the connecting plates 909 can drive the second clamping rod 912 to be clamped into the second clamping groove 915 on the limiting rod 914, at the same time, by pulling the pull plate 908 upwards, under the joint action of the limiting rod 914 and the supporting rod 916, the second mesh tube 917 can be lifted to move away from the upper end cover 1 and the first mesh tube 901, so that the separate disassembly of the second mesh tube 917 can be conveniently completed, then the connecting plates 909 can be loosened, at this time under the elastic action of the third spring 910, the connecting plates 909 on both sides can be automatically moved to the side to reset, the connecting plates 909 can drive the second clamping rod 912 to move away from the second clamping groove 915 on the limiting rod 914, and the disassembly of the cover plate 907 and the second mesh tube 917 is automatically completed, then the activated carbon filler in the second mesh tube 917 can be conveniently replaced, after the replacement is completed, through the same operation as described above, the second mesh tube 917 can be installed in the first mesh tube 901 again, and the stability of the subsequent working state of the swimming pool filter core is ensured.

[0053] When it is necessary to replace the folded filter paper 6 or to disassemble and clean the swimming pool filter core as a whole, the stop block 306 is only needed to be pushed to move into the first positioning rod 304, and after losing the block of the stop block 306, the first positioning rod 304 can move away from the first positioning groove 5, and then the convenient disassembly between the upper end cover 1, the lower end cover 2 and the metal mesh frame 4 can be conveniently completed, so that the folded filter paper 6 and the first mesh tube 901 can be conveniently disassembled, the overall disassembly of the swimming pool filter core is completed, and the replacement of the folded filter paper 6 and the convenience of the subsequent cleaning work of the swimming pool filter core are ensured.

[0054] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A swimming pool filter cartridge having a multi-stage sealing mechanism, characterized by, Including upper end cover (1), lower end cover (2), metal screen frame (4) and folding filter core paper (6), the upper end cover (1) and lower end cover (2) are both installed with multistage sealing assembly (3), the first positioning groove (5) is set through on the metal screen frame (4), the upper and lower end faces of the folding filter core paper (6) are respectively fitted with the upper end cover (1) and lower end cover (2), the second positioning groove (10) is set on the lower end cover (2), the multifunctional filter assembly (9) is connected on the lower end cover (2), the multistage sealing assembly (3) includes fixed ring (301), the upper end cover (1) and lower end cover (2) are both fixedly connected with fixed ring (301), the outer wall of fixed ring (301) is fixedly connected with first sealing ring (302), the inner wall of fixed ring (301) is fixedly connected with second sealing ring (303), first positioning rod (304) is welded and fixed on the fixed ring (301), first positioning rod (304) is slidably connected in first positioning groove (5), the upper end cover (1) and lower end cover (2) are both fixedly connected with fixed plate (313), the fixed plate (313) is fixedly connected with rubber air bag (314); The multifunctional filter assembly (9) includes first net cylinder (901) and limit groove (913), the inside bottom end face of first net cylinder (901) is fixedly connected with sealing ring (902), the bottom center part of first net cylinder (901) is set through with drain hole (903), the bottom two sides of first net cylinder (901) are fixedly connected with second positioning rod (904), second positioning rod (904) is clampedly connected in second positioning groove (10), second positioning rod (904) and second positioning groove (10) are one-to-one correspondence, first net cylinder (901) top is set with first clamping groove (905), first clamping groove (905) is symmetrically distributed in the inside two sides of first net cylinder (901), rubber frame (906) is slidably connected in first net cylinder (901), cover plate (907) is fixedly connected in rubber frame (906); The rubber frame (906) is fitted with the inner wall of first net cylinder (901), the top center part of cover plate (907) is welded and fixed with pull plate (908), the cover plate (907) is limitingly and slidably connected with connecting plate (909), the third spring (910) is welded and fixed on the connecting plate (909), the third spring (910) is welded and fixed in cover plate (907), the bottom of connecting plate (909) is welded and fixed with first clamping rod (911) and second clamping rod (912). The limiting groove (913) is arranged at the bottom center of the rubber frame (906) and the cover plate (907), the limiting groove (913) is limitedly and slidably connected with the limiting rod (914), the top of the limiting rod (914) is provided with the second clamping groove (915), the bottom of the limiting rod (914) is welded with the supporting rod (916), the supporting rod (916) is fixedly connected with the second mesh tube (917), the second mesh tube (917) is filled with activated carbon filler, the second mesh tube (917) is made of ceramic filter screen material, and the first mesh tube (901) is made of glass fiber filter screen material.

2. A swimming pool filter cartridge having a multi-stage sealing mechanism as defined in claim 1, wherein: The upper end cover (1) and the lower end cover (2) are attached to the metal mesh frame (4), the metal mesh frame (4) is provided with two, the cross section of the metal mesh frame (4) is semicircular ring, the first positioning groove (5) is symmetrically distributed on the upper and lower sides of the metal mesh frame (4), and the first positioning rod (304) is symmetrically distributed on the two sides of the fixed ring (301).

3. A swimming pool filter cartridge having a multi-stage sealing mechanism as defined in claim 2, wherein: The first positioning rod (304) is welded with the first spring (305), the first spring (305) is welded with the stop block (306), the stop block (306) is limitedly and slidably connected in the first positioning rod (304), the stop block (306) is symmetrically distributed on the two sides of the first positioning rod (304), the end of the stop block (306) is a right trapezoid, the upper end cover (1) and the lower end cover (2) are provided with the gas storage groove (307), the upper end cover (1) and the lower end cover (2) are provided with the through groove (308), the gas storage groove (307) is fixedly connected with the second spring (309), and the second spring (309) is fixedly connected with the first rubber piston (310).

4. A swimming pool filter cartridge having a multi-stage sealing mechanism as defined in claim 3, wherein: The gas storage groove (307), the first rubber piston (310) and the rubber air bag (314) are circular, the first rubber piston (310) is attached to the inner wall of the gas storage groove (307), the first rubber piston (310) is fixedly connected with the push block (311), the end of the push block (311) is a right triangle, the push block (311) is slidably connected in the through groove (308), the push block (311) is symmetrically distributed on the two sides of the first rubber piston (310), the push block (311) corresponds to the through groove (308), the upper end cover (1) and the lower end cover (2) are fixedly connected with the air guide pipe (312), one end of the air guide pipe (312) is connected with the gas storage groove (307), and the other end of the air guide pipe (312) is connected with the rubber air bag (314).

5. The swimming pool filter cartridge having a multi-stage sealing mechanism of claim 1, wherein: The connecting plate (909) is symmetrically distributed on both sides of the cover plate (907), the first clamping rod (911) and the second clamping rod (912) are symmetrically distributed on the bottom of the connecting plate (909), the first clamping rod (911) is slidably connected in the rubber frame (906) and the cover plate (907), the second clamping rod (912) is limitingly and slidably connected in the cover plate (907), and the end of the first clamping rod (911) is clamped and connected in the first clamping groove (905).

6. The swimming pool filter cartridge having a multi-stage sealing mechanism of claim 1, wherein: The first net barrel (901) is fixedly connected with a plug rod (918), the plug rod (918) is fixedly connected with a second rubber piston (919), the second rubber piston (919) is limitingly and slidably connected in a sleeve (920), the cross section of the second rubber piston (919) and the cross section of the sleeve (920) are both rectangular, the sleeve (920) is welded with a supporting plate (921), the supporting plate (921) is welded with a fourth spring (922), the fourth spring (922) is fixedly connected with the second rubber piston (919), the sleeve (920) is provided with return flow holes (923) penetratingly arranged on the upper and lower sides, the plug rod (918) is provided with four groups, the four groups of plug rods (918) are equally angularly distributed on the first net barrel (901), each group of plug rods (918) is equally angularly distributed on the first net barrel (901), the plug rod (918) is one-to-one corresponding to the supporting plate (921) through the sleeve (920), the sleeve (920) is fixed in the middle part of the supporting plate (921), and the cross section of the supporting plate (921) is arc-shaped.

7. A swimming pool filter cartridge having a multi-stage seal mechanism as defined in claim 1, wherein: The central part of the upper end cover (1) is penetratingly provided with a receiving groove (7), the receiving groove (7) is fixedly connected with rubber plates (8), the rubber plates (8) are symmetrically distributed on both sides of the receiving groove (7), and the rubber plates (8) on both sides are attached to each other, and the central part of the lower end cover (2) is fixedly connected with a water outlet pipe (11).

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