Swimming pool filter element with multi-stage sealing mechanism

Abstract

The invention relates to the technical field of swimming pool filter elements, and provides a swimming pool filter element with a multi-stage sealing mechanism, the swimming pool filter element comprises an upper end cover, a lower end cover, a metal net frame and folding filter element paper, the upper end cover and the lower end cover are both provided with multi-stage sealing assemblies, and a first positioning groove is formed in the metal net frame in a penetrating manner; the upper end face and the lower end face of the folding filter element paper are attached to the upper end cover and the lower end cover respectively, a second positioning groove is formed in the lower end cover, the lower end cover is connected with a multifunctional filtering assembly, the multi-stage sealing assembly comprises fixing rings, the upper end cover and the lower end cover are fixedly connected with the fixing rings, and the fixing rings are connected with the folding filter element paper. The outer wall of the fixing ring is fixedly connected with a first sealing ring. By means of the technical scheme, the problems that in the prior art, a swimming pool filter element cannot conduct multi-stage sealing treatment on the connecting positions of all parts, multi-stage filtering and purifying treatment cannot be conducted on swimming pool water, and meanwhile a filtering mechanism cannot be independently replaced according to the actual use condition are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of swimming pool filter elements, and in particular to a swimming pool filter element with a multi-stage sealing mechanism. Background Art

[0002] With the continuous improvement of people's living standards, swimming pools have become an important facility for leisure, fitness and entertainment and have been widely welcomed. Whether it is private residential swimming pools, community public swimming pools or commercial water parks, their number is constantly increasing. The swimming pool filter is an important component in the swimming pool filtration system. It is mainly used to clean the pool water, remove impurities, fine particles and pollutants in the water, and ensure the cleanliness and safety of the pool water.

[0003] However, existing swimming pool filter cartridges have some problems in their actual operation. For example, a new swimming pool filter cartridge with publication number CN114797221A can realize convenient disassembly and assembly of the filter cartridge during operation through a snap-fit mechanism, but its sealing performance is poor and it is not possible to perform multi-stage sealing treatment on the joints of various components. Therefore, unfiltered water can easily bypass the normal filtration process through the gaps between components or at the joints and directly mix into the filtered water, resulting in poor filtration effect. In addition, the existing swimming pool filter cartridge cannot perform multi-stage filtration and purification treatment on the swimming pool water during actual operation, and the filtration mechanism cannot be replaced separately according to actual usage, resulting in poor practicality. Therefore, it is necessary to provide a swimming pool filter cartridge with a multi-stage sealing mechanism to meet the needs of users. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art and provide a swimming pool filter element with a multi-stage sealing mechanism.

[0005] The present invention is achieved through the following technical solutions: A swimming pool filter element with a multi-stage sealing mechanism comprises an upper end cover, a lower end cover, a metal mesh frame and folded filter element paper, wherein a multi-stage sealing assembly is installed on the upper end cover and the lower end cover, the metal mesh frame is penetrated by a first positioning groove, the upper and lower end surfaces of the folded filter element paper are respectively fitted with the upper end cover and the lower end cover, the lower end cover is provided with a second positioning groove, and the lower end cover is connected to a multifunctional filter assembly, the multi-stage sealing assembly comprises a fixing ring, the upper end cover and the lower end cover are fixedly connected to the fixing ring, the outer wall of the fixing ring is fixedly connected to the first sealing ring, the inner wall of the fixing ring is fixedly connected to the second sealing ring, a first positioning rod is welded and fixed on the fixing ring, the first positioning rod is penetrated and slidably connected in the first positioning groove, the upper end cover and the lower end cover are fixedly connected to a fixing plate, and a rubber airbag is fixedly connected to the fixing plate.

[0006] As a preferred solution of the present invention, the upper end cover and the lower end cover are both fitted with the metal mesh frame, two metal mesh frames are provided, the cross-section of the metal mesh frame is semicircular, the first positioning grooves are symmetrically distributed on the upper and lower sides of the metal mesh frame, and the first positioning rods are symmetrically distributed on both sides of the fixing ring.

[0007] As a preferred solution of the present invention, wherein: a first spring is welded and fixed in the first positioning rod, a stopper is welded and fixed on the first spring, the stopper is slidingly connected in the first positioning rod, the stops are symmetrically distributed on both sides of the first positioning rod, the end cross-section of the stopper is a right-angled trapezoid, air storage tanks are provided in the upper end cover and the lower end cover, through grooves are provided in the upper end cover and the lower end cover, a second spring is fixedly connected in the air storage tank, and a first rubber piston is fixedly connected to the second spring.

[0008] As a preferred solution of the present invention, the air storage tank, the first rubber piston and the rubber airbag are all annular in shape, the first rubber piston fits against the inner wall of the air storage tank, a push block is fixedly connected to the first rubber piston, the cross-section of the end of the push block is a right triangle, the push block is slidably connected in the through groove, the push blocks are symmetrically distributed on both sides of the first rubber piston, the push blocks correspond one to one to the through groove, and an air guide tube is fixedly connected to the upper end cover and the lower end cover, one end of the air guide tube is connected to the air storage tank, and the other end of the air guide tube is connected to the rubber airbag.

[0009] As a preferred solution of the present invention, the multifunctional filtering assembly includes a first mesh cylinder and a limiting groove, a sealing ring is fixedly connected to the inner bottom end surface of the first mesh cylinder, a drainage hole is penetrated through the bottom center of the first mesh cylinder, second positioning rods are fixedly connected to both sides of the bottom of the first mesh cylinder, the second positioning rods are snap-connected in the second positioning groove, the second positioning rods correspond one-to-one to the second positioning groove, a first card groove is opened on the top of the first mesh cylinder, the first card grooves are symmetrically distributed on both sides of the interior of the first mesh cylinder, a rubber frame is slidably connected in the first mesh cylinder, and a cover plate is fixedly connected in the rubber frame.

[0010] As a preferred solution of the present invention, the rubber frame is fitted with the inner wall of the first mesh tube, a pull plate is welded and fixed to the top center of the cover plate, a connecting plate is connected to the upper limit sliding connection of the cover plate, a third spring is welded and fixed to the connecting plate, the third spring is welded and fixed in the cover plate, and a first clamping rod and a second clamping rod are welded and fixed to the bottom of the connecting plate.

[0011] As a preferred solution of the present invention, the connecting plate is symmetrically distributed on both sides of the cover plate, the first card rod and the second card rod are symmetrically distributed on both sides of the bottom of the connecting plate, the first card rod is slidably connected in the rubber frame and the cover plate, the second card rod is limitedly slidably connected in the cover plate, and the end of the first card rod is snap-connected in the first card slot.

[0012] As a preferred solution of the present invention, wherein: the limit groove is opened at the center part of the bottom of the rubber frame and the cover plate, the limit sliding connection is provided with a limit rod in the limit groove, second slots are opened on both sides of the top of the limit rod, support rods are welded and fixed on both sides of the bottom of the limit rod, a second mesh cylinder is fixedly connected to the support rod, the second mesh cylinder is filled with activated carbon filler, the second mesh cylinder is made of ceramic filter material, and the first mesh cylinder is made of glass fiber filter material.

[0013] As a preferred solution of the present invention, wherein: a plug rod is fixedly connected to the first mesh cylinder, a second rubber piston is fixedly connected to the plug rod, the second rubber piston is limitedly slidably connected in the sleeve, the cross-section of the second rubber piston and the cross-section of the sleeve are both rectangular, a support plate is welded and fixed to the sleeve, a fourth spring is welded and fixed on the support plate, the fourth spring is fixedly connected to the second rubber piston, and reflux holes are opened on the upper and lower sides of the sleeve, the plug rods are provided in four groups, the four groups of plug rods are distributed at equal angles on the first mesh cylinder, and each group of plug rods is equidistantly distributed on the first mesh cylinder, the plug rods correspond one-to-one to the support plate through the sleeve, the sleeve is fixed to the middle part of the support plate, and the cross-section of the support plate is arc-shaped.

[0014] As a preferred solution of the present invention, a receiving groove is provided through the center of the upper end cover, a rubber plate is fixedly connected to the receiving groove, the rubber plates are symmetrically distributed on both sides of the receiving groove, the rubber plates on both sides are in contact with each other, and a water outlet pipe is fixedly connected to the center of the lower end cover.

[0015] The working principle and beneficial effects of the present invention are: 1. The present invention is provided with a metal mesh frame and a first positioning groove. By utilizing the cooperation of the first positioning rod and the first positioning groove, combined with the block, the upper end cover, the lower end cover and the metal mesh frame can be assembled, installed or disassembled and separated conveniently and stably. At the same time, the second positioning rod and the second positioning groove can be combined to simultaneously assemble and install the first mesh cylinder and the folded filter element paper on the upper end cover and the lower end cover, thereby effectively improving the installation efficiency of the swimming pool filter element, and the various components can be conveniently disassembled and assembled, and each component can be replaced separately, thereby effectively improving the inspection and cleaning efficiency of the swimming pool filter element, and increasing the service life of the swimming pool filter element, and reducing the maintenance cost of the swimming pool filter element.

[0016] 2. The present invention is provided with a multi-stage sealing assembly. During the assembly and installation 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 automatically move toward the inside of the air storage tank. Combined with the first rubber piston, the rubber airbag can be automatically inflated. In conjunction with the first sealing ring and the second sealing ring, the connection seal between the upper end cover, the lower end cover and the metal mesh frame and the connection seal between the upper end cover, the lower end cover and the folded filter element paper can be automatically completed. The connection seal between the upper end cover, the lower end cover and the first mesh cylinder can also be completed. At the same time, multi-stage sealing treatment is achieved at the connection of each component, which effectively improves the overall sealing performance of the swimming pool filter element, prevents unfiltered water from bypassing the normal filtration process from the gaps between components or the connection parts, and directly mixes into the filtered water, thereby ensuring the filtration effect and making the swimming pool water meet the expected purification standards.

[0017] 3. The present invention is provided with a multifunctional filter assembly, which can effectively intercept larger solid impurities in the swimming pool water, such as leaves, insects, hair, etc. through the metal mesh frame, thereby protecting subsequent filter components; then, combined with the folded filter paper, the first mesh cylinder made of glass fiber filter material, the second mesh cylinder made of ceramic filter material and the activated carbon filled inside, it can realize the coarse filtration, fine filtration and adsorption purification of the swimming pool water, thereby effectively removing various impurities in the swimming pool water and ensuring the cleanliness and hygiene of the swimming pool water; at the same time, under the joint action of the plug rod, the second rubber piston and the sleeve, combined with the reflux hole and the water flowing into the sleeve, a hydraulic buffer assembly can be formed, and the flexible folded filter paper can be automatically and stably supported and protected by the support plate to prevent the folded filter paper from collapsing toward the center when subjected to water pressure, thereby maintaining the overall shape of the filter element, ensuring the stability of the filter channel, and allowing the water to pass through the folded filter paper evenly.

[0018] 4. The present invention is provided with a first clamping rod and a second clamping rod. By pushing the connecting plates on both sides toward the middle, the disassembly and separation between the cover plate and the first net cylinder and the clamping and fixing between the cover plate and the limit rod can be completed at the same time, so that the second net cylinder can be disassembled separately conveniently and stably. By disassembling the second net cylinder separately, the activated carbon filler in the second net cylinder can be replaced separately conveniently and stably. There is no need to disassemble the filter element as a whole, and the activated carbon filler can be replaced conveniently and frequently, thereby increasing the diversity and convenience of the use of the swimming pool filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the lower end cover and the water outlet pipe of the present invention; Figure 3 This is a schematic diagram of the overall main cross-sectional structure of the present invention; Figure 4 This is a schematic diagram of the connection structure between the metal mesh frame and the sealing strip of the present invention; Figure 5 This is a schematic diagram of the connection structure between the first spring and the stopper of the present invention; Figure 6 This invention Figure 3 A in the middle is an enlarged structural diagram; Figure 7 This invention Figure 3 The enlarged structural diagram at B in the middle; Figure 8 This invention Figure 3 The enlarged structural diagram at C in the middle; Figure 9 It is a schematic diagram of the connection structure between the fixing ring and the first sealing ring of the present invention; Figure 10 This is a schematic diagram of the connection structure between the fixing plate and the rubber airbag of the present invention; Figure 11 This is a schematic diagram of the connection structure between the first rubber piston and the push block of the present invention; Figure 12 This is a schematic diagram of the connection structure between the limiting rod and the second slot of the present invention; Figure 13 It is a schematic diagram of the connection structure of the cover plate and the pull plate of the present invention.

[0020] In the figure: 1. Upper end cover; 2. Lower end cover; 3. Multi-stage sealing assembly; 301. Fixing ring; 302. First sealing ring; 303. Second sealing ring; 304. First positioning rod; 305. First spring; 306. Stopper; 307. Air storage tank; 308. Through slot; 309. Second spring; 310. First rubber piston; 311. Push block; 312. Air guide tube; 313. Fixing plate; 314. Rubber airbag; 4. Metal mesh frame; 5. First positioning slot; 6. Folding filter paper; 7. Storage slot; 8. Rubber plate; 9. Multifunctional filter assembly; 901. First mesh cylinder; 902. Sealing ring; 903, drainage hole; 904, second positioning rod; 905, first card slot; 906, rubber frame; 907, cover plate; 908, pull plate; 909, connecting plate; 910, third spring; 911, first card rod; 912, second card rod; 913, limiting groove; 914, limiting rod; 915, second card slot; 916, support rod; 917, second mesh cylinder; 918, plug rod; 919, second rubber piston; 920, sleeve; 921, support plate; 922, fourth spring; 923, reflux hole; 10, second positioning slot; 11, water outlet pipe; 12, sealing strip. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and the best embodiment. Based on the embodiments of the invention, all other embodiments obtained by those skilled in the art without making any creative work shall fall within the scope of protection of the invention.

[0022] In the description of the invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the invention.

[0023] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "installed," "disposed," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0024] Example 1: Figures 1 to 13As shown, this embodiment proposes a swimming pool filter element with a multi-stage sealing mechanism, including an upper end cover 1, a lower end cover 2, a metal mesh frame 4 and a folded filter paper 6, a multi-stage sealing component 3 is installed on the upper end cover 1 and the lower end cover 2, a first positioning groove 5 is opened through the metal mesh frame 4, the upper and lower end surfaces of the folded filter paper 6 are respectively fitted with the upper end cover 1 and the lower end cover 2, a second positioning groove 10 is opened on the lower end cover 2, and a multifunctional filter component 9 is connected to the lower end cover 2, the multi-stage sealing component 3 includes a fixing ring 301, the upper end cover 1 and the lower end cover 2 are fixedly connected to the fixing ring 301, the outer wall of the fixing ring 301 is fixedly connected to the first sealing ring 302, the inner wall of the fixing ring 301 is fixedly connected to the second sealing ring 303, a first positioning rod 304 is welded and fixed on the fixing ring 301, the first positioning rod 304 is slidably connected to the first positioning groove 5, the upper end cover 1 and The lower end cover 2 is fixedly connected to a fixing plate 313, and the fixing plate 313 is fixedly connected to a rubber airbag 314. The multi-stage sealing component 3 can achieve multi-stage sealing treatment at the connection of each component, effectively improving the overall sealing performance of the swimming pool filter element, preventing unfiltered water from bypassing the normal filtration process from the gaps between components or the connection parts and directly mixing into the filtered water, thereby ensuring the filtration effect and making the swimming pool water reach the expected purification standard. In addition, the various components can be conveniently disassembled and assembled, and each component can be replaced separately, effectively improving the inspection and cleaning efficiency of the swimming pool filter element, and increasing the service life of the swimming pool filter element, and reducing the maintenance cost of the swimming pool filter element; and combined with the multifunctional filtering component 9, it can realize coarse filtration, fine filtration, and adsorption purification of swimming pool water, thereby effectively removing various impurities in the swimming pool water, and ensuring the cleanliness and hygiene of the swimming pool water.

[0025] Example 2: Figures 1 to 13 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes a swimming pool filter element with a multi-stage sealing mechanism.

[0026] In this embodiment, a receiving groove 7 is provided through the center of the upper end cover 1, and a rubber plate 8 is fixedly connected to the storage groove 7. The rubber plates 8 are symmetrically distributed on both sides of the storage groove 7, and the rubber plates 8 on both sides are in contact with each other. A water outlet pipe 11 is fixedly connected to the center of the lower end cover 2. The storage groove 7 can ensure the convenience of subsequent independent replacement of activated carbon, and the rubber plate 8 can be used to perform convenient and stable sealing and protection of the storage groove 7.

[0027] In this embodiment, the upper end cover 1 and the lower end cover 2 are both fitted with the metal mesh frame 4. Two metal mesh frames 4 are provided. The cross-section of the metal mesh frame 4 is semicircular. The left and right sides of the metal mesh frame 4 are fixedly connected with a sealing strip 12. The first positioning groove 5 is symmetrically distributed on the upper and lower sides of the metal mesh frame 4. The first positioning rod 304 is symmetrically distributed on both sides of the fixing ring 301. A first spring 305 is welded and fixed in the first positioning rod 304. A stopper 306 is welded and fixed on the first spring 305. The stopper 306 is limitedly slidably connected in the first positioning rod 304. The stoppers 306 are symmetrically distributed on both sides of the first positioning rod 304. The end cross-section of the stopper 306 is a right-angled trapezoid. By utilizing the cooperation of the first positioning rod 304 and the first positioning groove 5, combined with the stopper 306, the assembly, installation or disassembly and separation between the upper end cover 1, the lower end cover 2 and the metal mesh frame 4 can be completed conveniently and stably.

[0028] In this embodiment, an air storage tank 307 is provided in the upper end cover 1 and the lower end cover 2, a through slot 308 is provided in the upper end cover 1 and the lower end cover 2, a second spring 309 is fixedly connected to the air storage tank 307, a first rubber piston 310 is fixedly connected to the second spring 309, and the first rubber piston 310 is limitedly slidably connected to the air storage tank 307. The air storage tank 307, the first rubber piston 310 and the rubber airbag 314 are all annular. 10 is fitted with the inner wall of the air storage tank 307, and a push block 311 is fixedly connected to the first rubber piston 310. The cross section of the end of the push block 311 is a right triangle. The push block 311 is slidably connected to the through groove 308. The push blocks 311 are symmetrically distributed on both sides of the first rubber piston 310. The push blocks 311 correspond one to one with the through groove 308. An air guide tube 312 is fixedly connected to the upper end cover 1 and the lower end cover 2. One end of the air guide tube 312 is connected to the air storage tank 307. Then, the other end of the air guide tube 312 is connected to the rubber airbag 314, the annular outer wall of the rubber airbag 314 is in contact with the inner wall of the folded filter paper 6, the annular inner wall of the rubber airbag 314 is in contact with the outer wall of the first mesh tube 901, and the rubber airbag 314 is in contact with the upper end cover 1 and the lower end cover 2. During the assembly and installation process of the upper end cover 1, the lower end cover 2 and the metal mesh frame 4, the metal mesh frame 4 can push the push block 311 to automatically move into the air storage tank 307. Combined with the first rubber piston 310, the rubber airbag 314 can be automatically inflated, and in conjunction with the first sealing ring 302 and the second sealing ring 303, the connection seal between the upper end cover 1, the lower end cover 2 and the metal mesh frame 4 and the connection seal between the upper end cover 1, the lower end cover 2 and the folded filter paper 6 can be automatically completed, and the connection seal between the upper end cover 1, the lower end cover 2 and the first mesh tube 901 can be completed, and at the same time, multi-stage sealing processing is achieved at the connection of each component.

[0029] In this embodiment, the multifunctional filter assembly 9 includes a first mesh tube 901 and a limiting groove 913. The first mesh tube 901 is respectively fitted with the upper end cover 1 and the lower end cover 2. A sealing ring 902 is fixedly connected to the inner bottom end surface of the first mesh tube 901. A drainage hole 903 is provided through the bottom center of the first mesh tube 901. Second positioning rods 904 are fixedly connected to both sides of the bottom of the first mesh tube 901. The second positioning rods 904 are snap-connected in the second positioning groove 10. The second positioning rods 904 correspond to the second positioning groove 10 one by one. A first card groove 905 is provided on the top of the first mesh tube 901. The first card grooves 905 are symmetrically distributed on both sides of the interior of the first mesh tube 901. A rubber frame 906 is slidably connected in the first mesh tube 901. The rubber frame 906 is inside A cover plate 907 is fixedly connected, and the rubber frame 906 fits against the inner wall of the first mesh tube 901. The diameter of the storage groove 7 is smaller than the outer diameter of the first mesh tube 901, and 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. The upper limit sliding connection of the cover plate 907 is connected to a connecting plate 909. A third spring 910 is welded and fixed on the connecting plate 909. The third spring 910 is welded and fixed in the cover plate 907. The bottom of the connecting plate 909 is welded and fixed with a first clamping rod 911 and a second clamping rod 912. During the installation of the metal mesh frame 4, combined with the second positioning rod 904 and the second positioning groove 10, the first mesh tube 901 and the folded filter paper 6 can be assembled and installed on the upper end cover 1 and the lower end cover 2 at the same time.

[0030] In this embodiment, the first clamping rod 911 is slidably connected to the rubber frame 906 and the cover plate 907, the second clamping rod 912 is limited and slidably connected to the cover plate 907, the end of the first clamping rod 911 is snap-fitted and connected to the first clamping groove 905, 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 both sides of the bottom of the connecting plate 909, the limiting groove 913 is opened at the bottom center of the rubber frame 906 and the cover plate 907, the limiting rod 914 is limited and slidably connected in the limiting groove 913, the second clamping groove 915 is opened on both sides of the top of the limiting rod 914, the bottom sides of the limiting rod 914 are welded and fixed with support rods 916, and the support rod 916 is fixedly connected There is a second mesh tube 917, the outer wall of the second mesh tube 917 is in contact with the inner wall of the sealing ring 902, and the second mesh tube 917 is filled with activated carbon filler. The second mesh tube 917 is made of ceramic filter material, and the first mesh tube 901 is made of glass fiber filter 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 subsequent filtering components; then, combined with the folded filter paper 6, the first mesh tube 901 made of glass fiber filter material, the second mesh tube 917 made of ceramic filter material and the activated carbon filled inside, it can realize the coarse filtration, fine filtration and adsorption purification of the swimming pool water, thereby effectively removing various impurities in the swimming pool water and ensuring the cleanliness and hygiene of the swimming pool water.

[0031] In this embodiment, a plug rod 918 is fixedly connected to the first net cylinder 901, and a second rubber piston 919 is fixedly connected to the plug rod 918. The second rubber piston 919 is limited and slidably connected to the sleeve 920. The cross-sections of the second rubber piston 919 and the sleeve 920 are both rectangular. A support plate 921 is welded and fixed to the sleeve 920, and a fourth spring 922 is welded and fixed to the support plate 921. The fourth spring 922 is fixedly connected to the second rubber piston 919. A reflux hole 923 is opened on the upper and lower sides of the sleeve 920. Four groups of plug rods 918 are provided, and the four groups of plug rods 918 are distributed at equal angles. On the first mesh cylinder 901, each group of plug rods 918 are equidistantly distributed on the first mesh cylinder 901. The plug rods 918 correspond one-to-one to the support plates 921 through the sleeves 920. The sleeves 920 are fixed to the middle part of the support plates 921. The cross-section of the support plates 921 is arc-shaped. The support plates 921 fit the inner wall of the folded filter paper 6. Under the joint action of the plug rods 918, the second rubber piston 919 and the sleeve 920, combined with the reflux hole 923 and the water flowing into 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 plates 921.

[0032] It should be noted that the present invention is a swimming pool filter element with a multi-stage sealing mechanism. First, the staff can transport the activated carbon filler into the second mesh cylinder 917, and then place the rubber frame 906 and the cover plate 907 on the top of the second mesh cylinder 917. At this time, the limiting rod 914 on the second mesh cylinder 917 can be stably inserted into the limiting groove 913 in the rubber frame 906 and the cover plate 907, and then push the connecting plates 909 on both sides to move toward the middle. At this time, the connecting plates 909 can drive the second clamping rod 912 to engage with the second clamping groove 915 on the limiting rod 914. At the same time, the clamping rod 912 can be pulled upward to lock the filter element. Plate 908, under the joint action of the limit rod 914 and the support rod 916, can lift the second net tube 917 and put it into the first net tube 901, and then the connecting plate 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 driven to automatically move to the side and reset. At the same time, the connecting plate 909 can drive the first clamping rod 911 to automatically engage with the first clamping groove 905 in the first net tube 901, completing the clamping and fixing of the first net tube 901 and the second net tube 917 can be sealed and installed in the first net tube 901.

[0033] The staff can then place the first mesh cylinder 901 on the lower end cover 2, and insert the second positioning rod 904 at the bottom of the first mesh cylinder 901 into the second positioning groove 10 on the lower end cover 2 to complete the locking positioning. At this time, the folded filter paper 6 can be placed on the first mesh cylinder 901 to complete the positioning and placement of the folded filter paper 6. After that, the upper end cover 1 can be placed on top of the folded filter paper 6 and the first mesh cylinder 901.

[0034] After the upper end cover 1, the lower end cover 2, the first mesh cylinder 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 to move toward the fixing ring 301, and at the same time insert the first positioning rod 304 on the fixing 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 stopper 306, and under the action of the movement of the metal mesh frame 4, the stopper 306 can be pushed to automatically move toward the first positioning rod 304 until the first positioning rod 304 is inserted into the first positioning groove 5. The first spring 305 is used to move the stopper 306 outward and return to its original position. The first spring 305 is used to move the stopper 306 outward and return it ...

[0035] During the installation of the metal mesh frame 4, when the metal mesh frame 4 moves toward the upper end cover 1 and the lower end cover 2, it can first contact the inclined surface of the push block 311 and can push the push block 311 to move toward the inside of the air storage tank 307. Under the action of the movement of the push block 311, the first rubber piston 310 can be pushed to move toward the inside of the air storage tank 307, and then the air in the air storage tank 307 can be transported to the rubber airbag 314 on the fixed plate 313 through the air guide tube 312, thereby realizing automatic inflation of the rubber airbag 314.

[0036] At this time, under the cooperation of the first sealing ring 302 and the second sealing ring 303, the connection seal 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 airbag 314, the connection seal 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 airbag 314, the connection seal between the upper end cover 1, the lower end cover 2 and the first mesh tube 901 can be rotated to complete; at the same time, multi-stage sealing treatment is realized at the connection points of each component, which effectively improves the overall sealing performance of the swimming pool filter element, prevents unfiltered water from bypassing the normal filtration process from the gaps between components or the connection points, and directly mixes into the filtered water, thereby ensuring the filtration effect and making the swimming pool water reach the expected purification standard.

[0037] During the operation of the swimming pool filter, the metal mesh frame 4 can effectively intercept larger solid impurities in the swimming pool water, such as leaves, insects, and hair, to protect subsequent filtering components. Then, combined with the folded filter paper 6, the first mesh cylinder 901 made of glass fiber filter mesh, the second mesh cylinder 917 made of ceramic filter mesh, and the activated carbon filled inside, the swimming pool water can be filtered from coarse to fine filtration, and then to adsorption purification, thereby effectively removing various impurities in the swimming pool water, ensuring the cleanliness and hygiene of the swimming pool water. The filtered and purified water can be discharged through the drain hole 903 and the outlet pipe 11. And during the operation of the swimming pool filter element, the water flow can automatically enter the sleeve 920 through the reflux hole 923. At this time, the plug rod 918, the second rubber piston 919, the sleeve 920, the fourth spring 922, the reflux hole 923 and the water in the sleeve 920 can form a hydraulic buffer assembly, which can automatically and stably support and protect the inner wall of the flexible folded filter paper 6 through the support plate 921 to prevent the folded filter paper 6 from collapsing toward the center when subjected to water pressure, maintain the overall shape of the filter element, ensure the stability of the filtration channel, and allow water to flow evenly through the folded filter paper 6.

[0038] Since the activated carbon needs to be replaced frequently during use, the staff only needs to open the rubber plates 8 on both sides of the storage groove 7 and push the connecting plates 909 on both sides of the cover plate 907 to move toward the middle through the same operation as above. At this time, the connecting plates 909 can drive the second clamping rod 912 to engage with the second clamping groove 915 on the limit rod 914. At the same time, by pulling the pull plate 908 upward, the second net cylinder 917 can be lifted up under the joint action of the limit rod 914 and the support rod 916, so that it moves away from the upper end cover 1 and the first net cylinder 901, and the second net cylinder 917 can be easily completed. The second mesh cylinder 917 is automatically disassembled and separated from the cover plate 907. The activated carbon filler in the second mesh cylinder 917 can then be conveniently replaced. After the replacement is completed, the second mesh cylinder 917 can be installed in the first mesh cylinder 901 again through the same operation as above, thereby ensuring the stability of the subsequent working state of the swimming pool filter element.

[0039] When the folded filter paper 6 needs to be replaced or the swimming pool filter needs to be disassembled and cleaned as a whole, it is only necessary to push the block 306 to move into the first positioning rod 304. Without the obstruction of the block 306, the first positioning rod 304 can move out of the first positioning groove 5, and then the upper end cover 1, the lower end cover 2 and the metal mesh frame 4 can be easily disassembled, so that the folded filter paper 6 and the first mesh tube 901 can be easily disassembled, completing the overall disassembly of the swimming pool filter, ensuring the convenience of replacing the folded filter paper 6 and the subsequent cleaning of the swimming pool filter.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A swimming pool filter element with a multi-stage sealing mechanism, characterized in that: The invention comprises an upper end cover (1), a lower end cover (2), a metal mesh frame (4) and a folded filter paper (6), wherein 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), and the upper and lower end surfaces of the folded filter paper (6) are respectively fitted with the upper end cover (1) and the lower end cover (2), a second positioning groove (10) is provided on the lower end cover (2), and a multifunctional filter assembly (9) is connected to the lower end cover (2), and the multi-stage sealing assembly (3) comprises a fixing ring (301), and the upper end cover ( 1) and the lower end cover (2) are both fixedly connected with a fixing ring (301), the outer wall of the fixing ring (301) is fixedly connected with a first sealing ring (302), the inner wall of the fixing ring (301) is fixedly connected with a second sealing ring (303), a first positioning rod (304) is welded and fixed to the fixing ring (301), the first positioning rod (304) penetrates and is slidably connected in the first positioning groove (5), the upper end cover (1) and the lower end cover (2) are both fixedly connected with a fixing plate (313), and the fixing plate (313) is fixedly connected with a rubber airbag (314).

2. The swimming pool filter element with a multi-stage sealing mechanism according to claim 1, characterized in that: The upper end cover (1) and the lower end cover (2) are both fitted with the metal mesh frame (4). Two metal mesh frames (4) are provided. The cross section of the metal mesh frame (4) is semicircular. 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 both sides of the fixing ring (301).

3. The swimming pool filter element with a multi-stage sealing mechanism according to claim 2, characterized in that: A first spring (305) is welded and fixed in the first positioning rod (304), a stopper (306) is welded and fixed on the first spring (305), the stopper (306) is limitedly slidably connected in the first positioning rod (304), the stoppers (306) are symmetrically distributed on both sides of the first positioning rod (304), the end cross-sections of the stoppers (306) are right-angled trapezoidal, the upper end cover (1) and the lower end cover (2) are both provided with air storage tanks (307), the upper end cover (1) and the lower end cover (2) are both provided with through grooves (308), the air storage tank (307) is fixedly connected to the second spring (309), and the second spring (309) is fixedly connected to the first rubber piston (310).

4. The swimming pool filter element with a multi-stage sealing mechanism according to claim 3, characterized in that: The air storage tank (307), the first rubber piston (310) and the rubber airbag (314) are all annular in shape. The first rubber piston (310) fits against the inner wall of the air storage tank (307). A push block (311) is fixedly connected to the first rubber piston (310). The cross section of the end of the push block (311) is a right triangle. The push block (311) is slidably connected to the through groove (308). The push blocks (311) are symmetrically distributed on both sides of the first rubber piston (310). The push blocks (311) correspond to the through groove (308) one by one. An air guide tube (312) is fixedly connected to the upper end cover (1) and the lower end cover (2). One end of the air guide tube (312) is connected to the air storage tank (307), and the other end of the air guide tube (312) is connected to the rubber airbag (314).

5. The swimming pool filter element with a multi-stage sealing mechanism according to claim 1, characterized in that: The multifunctional filter assembly (9) comprises a first net cylinder (901) and a limiting groove (913), a sealing ring (902) is fixedly connected to the inner bottom end surface of the first net cylinder (901), a drainage hole (903) is provided through the bottom center of the first net cylinder (901), second positioning rods (904) are fixedly connected to both sides of the bottom of the first net cylinder (901), the second positioning rods (904) are snap-connected in the second positioning groove (10), the second positioning rods (904) and the second positioning groove (10) correspond one to one, a first card groove (905) is provided on the top of the first net cylinder (901), the first card grooves (905) are symmetrically distributed on both sides of the interior of the first net cylinder (901), a rubber frame (906) is slidably connected in the first net cylinder (901), and a cover plate (907) is fixedly connected in the rubber frame (906).

6. The swimming pool filter element with a multi-stage sealing mechanism according to claim 5, characterized in that: The rubber frame (906) fits with the inner wall of the first net tube (901), a pull plate (908) is welded and fixed to the center of the top of the cover plate (907), a connecting plate (909) is connected to the upper limit sliding of 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), and a first clamping rod (911) and a second clamping rod (912) are welded and fixed to the bottom of the connecting plate (909).

7. The swimming pool filter element with a multi-stage sealing mechanism according to claim 6, characterized in that: 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 both sides of the bottom of the connecting plate (909), the first clamping rod (911) is slidably connected to the rubber frame (906) and the cover plate (907), the second clamping rod (912) is limitedly slidably connected to the cover plate (907), and the end of the first clamping rod (911) is snap-connected to the first clamping slot (905).

8. The swimming pool filter element with a multi-stage sealing mechanism according to claim 7, characterized in that: The limiting groove (913) is provided at the center of the bottom of the rubber frame (906) and the cover plate (907); the limiting groove (913) is slidingly connected to the limiting rod (914); second slots (915) are provided on both sides of the top of the limiting rod (914); support rods (916) are welded and fixed on both sides of the bottom of the limiting rod (914); a second mesh cylinder (917) is fixedly connected to the support rod (916); the second mesh cylinder (917) is filled with activated carbon filler; the second mesh cylinder (917) is made of ceramic filter material, and the first mesh cylinder (901) is made of glass fiber filter material.

9. The swimming pool filter element with a multi-stage sealing mechanism according to claim 8, characterized in that: The first net cylinder (901) is fixedly connected to a plug rod (918), the plug rod (918) is fixedly connected to a second rubber piston (919), the second rubber piston (919) is limitedly slidably connected in a sleeve (920), the cross-sections of the second rubber piston (919) and the sleeve (920) are both rectangular, a support plate (921) is welded and fixed to the sleeve (920), and a fourth spring (922) is welded and fixed to the support plate (921), the fourth spring (922) and the second rubber piston are connected to each other. The plug (919) is fixedly connected, and the upper and lower sides of the sleeve (920) are penetrated by a return hole (923). The plug rod (918) is provided in four groups, and the four groups of plug rods (918) are distributed on the first mesh cylinder (901) at equal angles. Each group of plug rods (918) is distributed on the first mesh cylinder (901) at equal intervals. The plug rods (918) correspond to the support plate (921) one by one through the sleeve (920). The sleeve (920) is fixed to the middle part of the support plate (921), and the cross section of the support plate (921) is in the shape of an arc.

10. The swimming pool filter element with a multi-stage sealing mechanism according to claim 1, characterized in that: A receiving groove (7) is provided through the center of the upper end cover (1), a rubber plate (8) is fixedly connected to the receiving groove (7), and 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. A water outlet pipe (11) is fixedly connected to the center of the lower end cover (2).

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