Sewage sucking and cleaning device for swimming training pool

Abstract

The invention relates to the technical field of swimming pool water purification, in particular to a swimming training pool dirt suction cleaning device which comprises a support, a purification barrel is arranged on the support, a plurality of access ports are formed in the purification barrel, filter cartridges are inserted into the access ports, and the two ends of the access ports are communicated through the filter cartridges; a mounting ring is arranged in the filter cartridge, a filter plate is inserted into the mounting ring, an inner elastic air bag is arranged in the mounting ring, and an inner sealing clamping groove is formed in the side wall of the filter plate; side elastic air bags are arranged at the two ends of the filter cartridge; side sealing clamping grooves are formed in the two end surfaces of the access port; and a gas bin unit is arranged on the filter cartridge. The inner elastic air bag and the side elastic air bag ensure the sealing performance of the butt joint of the filter cartridge and the access port, and the air bin unit can extract air in the inner elastic air bag and the side elastic air bag, so that the inner elastic air bag and the side elastic air bag are shrunk, and the filter plate can be quickly disassembled and assembled. The filter plate can be conveniently disassembled and assembled, and the sealing performance of the installation position of the filter plate is improved.

Description

Technical Field

[0001] This application relates to the technical field of swimming pool water purification, and particularly to a sewage suction and cleaning device for swimming training pools. Background Art

[0002] With the improvement of people's health awareness and the increase in the demand for leisure and entertainment, swimming has become a sport loved by more and more people. The quality of the swimming pool water directly affects the health and experience of swimmers. For swimming pools with a large flow of people, continuous water purification is required to ensure the safety and hygiene of the swimming pool water.

[0003] The water purification system first removes suspended solids and particulate matter in the swimming pool water through a coarse filter plate, and then removes bacteria, parasites, odors, etc. in the swimming pool water through a fine filter plate. After the purification system works for a long time, the filter plate needs to be replaced, and the replacement cycle needs to be determined according to the material of the filter plate.

[0004] At present, the filter plates are divided into two installation methods. One is fixedly sealed in the filter barrel. This installation method has a good sealing effect, but the disassembly and installation of the filter plate are more troublesome. The other is a quick-installation type installed on the side of the filter barrel. This installation method is convenient for the disassembly and installation of the filter plate, but the sealing effect is poor and water seepage is likely to occur. Therefore, improvement is needed. Summary of the Invention

[0005] In order to facilitate the disassembly and assembly of the filter plate and improve the sealing performance at the installation position of the filter plate, this application provides a sewage suction and cleaning device for swimming training pools.

[0006] The sewage suction and cleaning device for swimming training pools provided by this application adopts the following technical solutions: The sewage suction and cleaning device for swimming training pools includes a bracket, and a purification barrel with a water inlet pipe and a water outlet pipe is provided on the bracket. A plurality of access ports are arranged on the purification barrel in sequence along its length direction. A filter cartridge is inserted at the access port, and both ends of the access port are connected through the filter cartridge; An installation ring is provided in the filter cartridge. A filter plate is inserted into the installation ring and an inner elastic airbag is provided. An annular inner sealing groove is provided on the side wall of the filter plate. When the inner elastic airbag is in a natural state, it will be clamped in the inner sealing groove. At this time, the inner elastic airbag will seal the docking part of the installation ring and the filter plate; Side elastic airbags are provided at both ends of the filter cartridge. Annular side sealing grooves are provided on both end faces of the access port. When the side elastic airbags are in a natural state, they will be clamped in the side sealing grooves. At this time, the side elastic airbags will seal the docking part of the filter cartridge and the access port; An air chamber unit capable of exhausting air is provided on the filter cartridge. The air chamber unit is connected to the inner elastic airbag and the side elastic airbag through an air pipe.

[0007] Optionally, the air chamber unit includes an air storage chamber provided on the filter cartridge. A pressure seat is slidably embedded in the air storage chamber. A first sealing plug is provided on one side of the pressure seat facing the interior of the air storage chamber, and the pressure seat is connected to the air storage chamber through a first spring.

[0008] Optionally, an air regulating chamber is communicated with the air storage chamber. A push plate is slidably embedded in the air regulating chamber. A second sealing plug is provided on one side of the push plate facing the interior of the air regulating chamber, and a screw rod is provided on the push plate. The axial direction of the screw rod is the same as the length direction of the air regulating chamber, and the screw rod is rotatably connected to the push plate around its own axis and is in threaded fit with the air regulating chamber.

[0009] Optionally, an inner installation groove is provided on the inner wall of the installation ring. The inner elastic air bag includes an inner installation part inserted into the inner installation groove. The inner installation part is communicated with an inner clamping part through an inner telescopic part. The inner installation part is communicated with the corresponding air pipe, and the inner clamping part enters and exits the inner sealing clamping groove through the expansion and contraction of the inner telescopic part.

[0010] Optionally, a side installation groove is provided on the end face of the filter cartridge. The side elastic air bag includes a side installation part inserted into the side installation groove. The side installation part is communicated with a side clamping part through a side telescopic part. The side installation part is communicated with the corresponding air pipe, and the side clamping part enters and exits the side sealing clamping groove through the expansion and contraction of the side telescopic part.

[0011] Optionally, a plug post is provided on the side installation part, and a slot for the plug post to slide and be inserted is provided on the groove wall of the side installation groove. When the side installation part is inserted into the side installation groove, the plug post will be inserted into the slot.

[0012] Optionally, sealing units are provided at both ends of the installation ring. The sealing unit includes a sealing ring connected to the installation ring through a second spring. When the second spring is in a natural state, the sealing ring will be inserted into the filter cartridge and the purification barrel and seal the docking part of the filter cartridge and the access port; The sealing ring is connected to the pressure seat through a pull rope. When the air in the inner elastic air bag and the side elastic air bag is extracted, the pressure seat will pull the sealing ring away from the inner side of the purification barrel through the pull rope.

[0013] Optionally, the sealing ring is connected to the installation ring through a corrugated sleeve. The corrugated sleeve, the sealing ring and the installation ring are coaxially arranged. The pull rope and the second spring are located outside the corrugated sleeve.

[0014] Optionally, sealing clamping seats arranged in a ring shape and installed on the inner wall of the purification barrel are provided at both ends of the access port. A sealing cavity for the sealing ring to be inserted is provided on the outer wall of the sealing clamping seat.

[0015] In summary, the present application includes the following beneficial technical effects: 1. When the filter plate needs to be replaced or cleaned, the worker will hold the second handle with one hand and hold the first handle with the other hand and pull it up. The first handle will drive the pressure seat and the pull rope to rise, and the air storage bin will extract the gas in the inner elastic airbag and the side elastic airbag through the air pipe. The inner telescopic part and the side telescopic part will shrink, the inner clamping part will be separated from the inner sealing groove, the side clamping part will be separated from the side sealing groove, and the pull rope will pull the sealing ring away from the inside of the purification barrel. At this time, the worker can take the filter cartridge out of the access port, and then the worker will release the second handle and push the filter plate out of the mounting ring, realizing the rapid disassembly of the filter cartridge and filter plate. 2. When the filter plate is replaced or cleaned, the worker will hold the first handle with one hand and pull it up, and push the filter plate into the mounting ring with the other hand, so that the limit block is clamped in the limit groove; then the worker will loosen the filter plate and hold the second handle to insert the filter cartridge into the access port, and loosen the first handle. The first spring will return to its natural state and cause the pressure seat to move and reset. The pressure seat will inflate the inner elastic airbag and the side elastic airbag. The inner elastic airbag will be clamped in the inner sealing groove again, and the side elastic cavity will be clamped in the side sealing groove again. The second spring will return to its natural state and cause the sealing ring to move and reset. The sealing ring will be reinserted into the sealing cavity. At this time, the filter plate and filter cartridge will be clamped and fixed, and the joints between the filter cartridge and the access port, and the joints between the filter plate and the mounting ring will be sealed, thereby realizing rapid and sealed installation of the filter cartridge and filter plate. 3. During the pool water purification process, the first filter plate will intercept large particles of impurities, the second filter plate will intercept bacteria and parasites, and the third filter plate will adsorb organic matter and residual chlorine, and improve the water quality and odor. The pool water that has undergone triple filtration will be discharged into the swimming pool through the outlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the present application; Figure 2 This is a schematic diagram of the overall cross-sectional structure of an embodiment of the present application; Figure 3 This is a schematic structural diagram of the purification barrel and filter cartridge according to an embodiment of the present application; Figure 4 This is a schematic cross-sectional view of the purification barrel and filter cartridge according to an embodiment of the present application; Figure 5 This is a schematic diagram of the exploded structure of the mounting ring and filter plate of an embodiment of the present application; Figure 6 This is a schematic cross-sectional view of the purification barrel, filter cartridge, and mounting ring according to an embodiment of the present application; Figure 7 This is a schematic structural diagram of the mounting ring, filter plate, and gas chamber unit according to an embodiment of the present application; Figure 8 This is a schematic structural diagram of the mounting ring, sealing unit, and gas chamber unit according to an embodiment of the present application; Figure 9 It is a schematic cross-sectional structure diagram of the air storage chamber unit and the air regulating chamber in the embodiment of the present application.

[0017] Reference numerals: 1, bracket; 2, purification barrel; 21, water inlet pipe; 22, water outlet pipe; 23, access port; 24, side sealing slot; 25, sealing seat; 26, sealing cavity; 3, filter cartridge; 31, side mounting groove; 32, concave cavity; 33, guide wheel; 34, second handle; 4, mounting ring; 41, limiting block; 42, inner mounting groove; 43, countersunk bolt; 5, filter plate; 51, limiting groove; 52, inner sealing slot; 6, inner elastic airbag; 61, inner mounting part; 62, inner telescopic part; 63, inner clamping part; 7, side elastic airbag; 71, side mounting part; 72, side telescopic part; 73, side clamping part; 8, sealing unit; 81, sealing ring; 82, second spring; 83, corrugated sleeve; 9, air storage chamber unit; 91, air storage chamber; 92, pressing seat; 93, first handle; 94, first sealing plug; 95, first spring; 96, air pipe; 97, pull rope; 10, air regulating chamber; 101, push plate; 102, second sealing plug; 103, screw rod. Detailed implementation manners

[0018] The following will further describe the present application in detail with reference to the Figures 1-9 accompanying drawings.

[0019] The embodiment of the present application discloses a sewage suction and cleaning device for a swimming training pool. As Figure 1 and Figure 2 shown, the sewage suction and cleaning device for a swimming training pool includes a bracket 1, a purification barrel 2 is installed on the bracket 1, the purification barrel 2 is horizontally arranged, a water inlet pipe 21 is installed at the left end of the purification barrel 2, a water outlet pipe 22 is installed at the right end of the purification barrel 2, a plurality of access ports 23 are arranged on the purification barrel 2 in sequence along its length direction, a filter cartridge 3 is inserted at the access port 23, and the two ends of the access port 23 are communicated through the filter cartridge 3.

[0020] The filter cartridge 3 is internally provided with an installation ring 4, and a filter plate 5 is inserted into the installation ring 4; in this embodiment, the number of inlets 23 is three, and there are also three groups of corresponding filter plates 5. The three groups of filter plates 5 are a quartz sand coarse filter plate 5, a diatomite fine filter plate 5, and an activated carbon composite filter plate 5 respectively; the quartz sand coarse filter plate 5 is composed of multiple layers of quartz sand (particle size 0.5 - 1.2 mm), intercepts large particle impurities through the pores of the sand layer, with a filtration accuracy of 20 - 50 microns and a cleaning cycle of 3 - 15 days; the diatomite fine filter plate 5 is formed by pre - coating diatomite powder on the surface of a polypropylene (PP) or metal filter element to form a porous filter layer, with a filtration accuracy of 1 - 5 microns, capable of intercepting bacteria and parasites, and a cleaning cycle of 3 - 7 days; the activated carbon composite filter plate 5 is formed by adding an activated carbon layer to a quartz sand or PP filter plate 5, with a filtration accuracy of 20 - 50 microns, which can perform physical filtration and chemical adsorption, used for adsorbing organic substances and residual chlorine, improving the odor of water quality (such as urea, chloramine), and the replacement cycle is 3 - 6 months.

[0021] As Figure 3 and Figure 5 shown, three limiting blocks 41 are installed on the inner wall of the installation ring 4, and three limiting grooves 51 are provided on the surface of the filter plate 5. When the filter plate 5 is inserted into the installation ring 4, the three limiting blocks 41 will be clamped in the corresponding limiting grooves 51, so that the filter plate 5 can be stably inserted into the installation ring 4.

[0022] As Figure 4 and Figure 6 shown, an inner installation groove 42 is provided on the inner wall of the installation ring 4, and an inner elastic airbag 6 is provided in the inner installation groove 42. The inner elastic airbag 6 includes an inner installation part 61 inserted into the inner installation groove 42. The inner installation part 61 is connected to an inner clamping part 63 through an inner telescopic part 62. The inner installation part 61, the inner telescopic part 62, and the inner clamping part 63 are integrally formed, and the cross - section of the inner clamping part 63 is arc - shaped; a circular inner sealing clamping groove 52 is provided on the side wall of the filter plate 5.

[0023] When the filter plate 5 is inserted into the installation ring 4, the inner elastic airbag 6 will be in a natural state. The inner installation part 61 will support the inner clamping part 63 through the inner telescopic part 62, so that the inner clamping part 63 is clamped in the inner sealing clamping groove 52. At this time, the filter plate 5 will be clamped and fixed in the installation ring 4, improving the stability of the filter plate 5 during the filtration process, and the inner elastic airbag 6 will seal the docking part between the installation ring 4 and the filter plate 5 to ensure the filtration effect of the filter plate 5 on the pool water.

[0024] It should be noted that the installation ring 4 is composed of two left - and - right connecting rings. One of the connecting rings is installed on the inner wall of the filter cartridge 3 through a plurality of countersunk bolts 43, and the two connecting rings are connected through a plurality of countersunk bolts 43. The two connecting rings together form the inner installation groove 42 for the disassembly and assembly of the inner elastic airbag 6 in the inner installation groove 42.

[0025] A side mounting groove 31 is provided on the end surface of the filter cartridge 3, and a side elastic airbag 7 is provided in the side mounting groove 31. The side elastic airbag 7 includes a side mounting portion 71 inserted into the side mounting groove 31, and the side mounting portion 71 is connected to the side clamping portion 73 through the side telescopic portion 72. The side mounting portion 71, the side telescopic portion 72 and the side clamping portion 73 are integrally formed; an annular side sealing groove 24 is provided on both end surfaces of the inlet 23.

[0026] When the filter cartridge 3 is inserted into the access port 23, the side elastic airbag 7 will be in a natural state, and the side mounting portion 71 will support the side clamping portion 73 through the side telescopic portion 72, so that the side clamping portion 73 is clamped in the side sealing groove 24. At this time, the filter cartridge 3 will be clamped and fixed in the access port 23, which improves the stability of the filter cartridge 3 during the filtration process, and the side elastic airbag 7 will seal the joint between the filter cartridge 3 and the access port 23 to minimize water seepage.

[0027] Multiple posts are mounted on the side mounting portion 71, and the side mounting slot 31 has multiple slots on its walls for the posts to slide into. When the side mounting portion 71 is inserted into the side mounting slot 31, the posts engage within the slots, enhancing the stability of the side airbag unit within the side mounting slot 31. The insertion and engagement of the posts into the slots is a common connection structure used by those skilled in the art and is not shown in the figures.

[0028] like Figure 6 and Figure 8 As shown, sealing units 8 are provided at both ends of the mounting ring 4. The sealing units 8 include a sealing ring 81 connected to the mounting ring 4 via a second spring 82. One end of the second spring 82 is fixedly connected to the end face of the mounting ring 4, and the other end of the second spring 82 is fixedly connected to the end face of the sealing ring 81. When the second spring 82 is in its natural state, the sealing ring 81 is inserted into the filter cartridge 3 and the purification barrel 2 and seals the joint between the filter cartridge 3 and the access port 23, thereby further preventing water seepage.

[0029] The sealing ring 81 is connected to the mounting ring 4 through the bellows sleeve 83. One end of the bellows sleeve 83 is fixedly connected to the end face of the sealing ring 81, and the other end of the bellows sleeve 83 is fixedly connected to the end face of the mounting ring 4. The bellows sleeve 83, the sealing ring 81 and the mounting ring 4 are coaxially arranged. The bellows sleeve 83 seals the gap between the sealing ring 81 and the mounting ring 4, thereby further avoiding water seepage.

[0030] An annular sealing base 25 is provided at each end of the inlet 23 and is mounted on the inner wall of the purification barrel 2. The outer wall of the sealing base 25 defines a sealing cavity 26 for receiving the sealing ring 81. When the second spring 82 is in its natural state, the sealing ring 81 is inserted into the sealing cavity 26, thereby sealing the gap between the sealing ring 81 and the filter cartridge 3 and further preventing water seepage.

[0031] likeFigures 6 to 9 As shown, a concave cavity 32 is provided on the outer wall of the filter cartridge 3. An air storage chamber unit 9 is provided in the concave cavity 32. The air storage chamber unit 9 includes an air storage chamber 91. The bottom of the air storage chamber 91 is installed on the bottom chamber wall of the concave cavity 32. A pressure seat 92 is slidably embedded in the upper part inside the air storage chamber 91. The pressure seat 92 is arranged in an "I" shape. A first handle 93 is installed on the upper surface of the pressure seat 92. The lower surface of the pressure seat 92 faces the inside of the air storage chamber 91 and is bonded with a first sealing plug 94. The pressure seat 92 is connected to the air storage chamber 91 through a first spring 95. One end of the first spring 95 is fixedly connected to the air storage chamber 91, and the other end of the first spring 95 is fixedly connected to the pressure seat 92. The lower part inside the air storage chamber 91 is communicated with the inner elastic airbag 6 and the side elastic airbag 7 through an air pipe 96. One end of the sealing ring 81 facing the mounting ring 4 is connected to the pressure seat 92 through a pull rope 97. A guide wheel 33 is rotatably connected to the inner wall of the filter cartridge 3. The middle part of the pull rope 97 bypasses the guide wheel 33, and the pull rope 97 slidably penetrates through the filter cartridge 3.

[0032] When the worker pulls up the pressure seat 92 through the first handle 93, the air storage chamber 91 will extract the gas in the inner elastic airbag 6 and the side elastic airbag 7 through the air pipe 96. The inner telescopic part 62 and the side telescopic part 72 will contract. The inner clamping part 63 will disengage from the inner sealing card slot 52, and the side clamping part 73 will disengage from the side sealing card slot 24. And the pressure seat 92 will pull the sealing ring 81 to disengage from the inside of the purification barrel 2 through the pull rope 97. At this time, the worker can take out the filter cartridge 3 from the access port 23 for cleaning, disassembly and assembly of the filter plate 5.

[0033] It should be noted that the guide wheel 33, the pull rope 97 and the second spring 82 are all located outside the corrugated sleeve 83, thus further avoiding the occurrence of water seepage, and making the guide wheel 33, the pull rope 97 and the second spring 82 not easily contact with water, improving the service life of the guide wheel 33, the pull rope 97 and the second spring 82.

[0034] As Figure 8 and Figure 9 shown, an air regulating chamber 10 is communicated with the lower part inside the air storage chamber 91. A push plate 101 is slidably embedded in the air regulating chamber 10. One side of the push plate 101 facing the inside of the air regulating chamber 10 is bonded with a second sealing plug 102. And a screw rod 103 is provided on the push plate 101. The axial direction of the screw rod 103 is the same as the length direction of the air regulating chamber 10. And the screw rod 103 is rotatably connected to the push plate 101 around its own axis and is in threaded fit with the air regulating chamber 10. By rotating the screw rod 103, the second sealing plug 102 can be made to move in the air regulating chamber 10, thereby adjusting the air pressure in the air storage chamber 91 to ensure that there is sufficient air inside the inner elastic airbag 6 and the side elastic airbag 7 to ensure the clamping effect and sealing effect inside the inner elastic airbag 6 and the side elastic airbag 7.

[0035] As Figure 3 ​As shown, a second handle 34 is installed on the outer wall of the filter cartridge 3 for workers to lift the filter cartridge 3.

[0036] The implementation principle of the sewage suction and cleaning device for the swimming training pool in the embodiment of the present application is as follows: During the purification process of the pool water, workers connect the water inlet pipe 21 to an external water pump. The water pump will pump the pool water, so that the pool water enters the purification barrel 2 through the water inlet pipe 21. The first filter plate 5 will intercept large particulate impurities, the second filter plate 5 will intercept bacteria and parasites, and the third filter plate 5 will adsorb organic matter and residual chlorine and improve the odor of the water quality. The pool water that has undergone triple filtration will be discharged into the pool through the water outlet pipe 22.

[0037] When it is necessary to replace or clean the filter plate 5, a worker will hold the second handle 34 with one hand and pull up the first handle 93 with the other hand. The first handle 93 will drive the pressure seat 92 and the pull rope 97 to rise. The air storage chamber 91 will extract the gas in the inner elastic airbag 6 and the side elastic airbag 7 through the air pipe 96. The inner telescopic part 62 and the side telescopic part 72 will contract. The inner clamping part 63 will disengage from the inner sealing slot 52, and the side clamping part 73 will disengage from the side sealing slot 24. The pull rope 97 will pull the sealing ring 81 out of the inner side of the purification barrel 2. At this time, the worker can take out the filter cartridge 3 from the access port 23. After that, the worker will release the second handle 34 and push the filter plate 5 out of the mounting ring 4, realizing the quick disassembly of the filter cartridge 3 and the filter plate 5.

[0038] When the replacement or cleaning of the filter plate 5 is completed, a worker will hold the first handle 93 with one hand and pull it up, and push the filter plate 5 into the mounting ring 4 with the other hand, and make the limit block 41 snap into the limit slot 51. After that, the worker will release the filter plate 5 and hold the second handle 34, insert the filter cartridge 3 into the access port 23, and release the first handle 93. The first spring 95 will return to its natural state and urge the pressure seat 92 to move back to its original position. The pressure seat 92 will inflate the inner elastic airbag 6 and the side elastic airbag 7. The inner elastic airbag 6 will re-snap into the inner sealing slot 52, and the side elastic cavity will re-snap into the side sealing slot 24. The second spring 82 will return to its natural state and urge the sealing ring 81 to move back to its original position. The sealing ring 81 will re-insert into the sealing cavity 26. At this time, the filter plate 5 and the filter cartridge 3 will be snap-fixed, and the docking part between the filter cartridge 3 and the access port 23 and the docking part between the filter plate 5 and the mounting ring 4 will be sealed, realizing the quick and sealed installation of the filter cartridge 3 and the filter plate 5.

[0039] In summary, the present application can complete the quick disassembly and assembly of the filter cartridge 3 and the filter plate 5, and ensure the sealing effect of the filter cartridge 3 and the filter plate 5 during use.

[0040] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A sewage suction and cleaning device for a swimming training pool, characterized in that: It includes a bracket (1), on which a purification barrel (2) with a water inlet pipe (21) and a water outlet pipe (22) is provided. A number of access ports (23) are arranged in sequence along the length direction of the purification barrel (2). A filter cartridge (3) is inserted at the access port (23), and both ends of the access port (23) are connected and communicated through the filter cartridge (3). An installation ring (4) is provided inside the filter cartridge (3). A filter plate (5) is inserted into the installation ring (4), and an inner elastic airbag (6) is provided. An annular inner sealing slot (52) is provided on the side wall of the filter plate (5). When the inner elastic airbag (6) is in a natural state, it will be clamped in the inner sealing slot (52). At this time, the inner elastic airbag (6) will seal the docking part of the installation ring (4) and the filter plate (5). Side elastic airbags (7) are provided at both ends of the filter cartridge (3). Annular side sealing slots (24) are provided on both end faces of the access port (23). When the side elastic airbags (7) are in a natural state, they will be clamped in the side sealing slots (24). At this time, the side elastic airbags (7) will seal the docking part of the filter cartridge (3) and the access port (23). An air chamber unit (9) that can be evacuated is provided on the filter cartridge (3). The air chamber unit (9) is connected to the inner elastic airbag (6) and the side elastic airbag (7) through an air pipe (96).

2. The sewage suction and cleaning device for a swimming training pool according to claim 1, characterized in that: The air chamber unit (9) includes a gas storage chamber (91) provided on the filter cartridge (3). A pressure seat (92) is slidably embedded in the gas storage chamber (91). A first sealing plug (94) is provided on the side of the pressure seat (92) facing the inside of the gas storage chamber (91), and the pressure seat (92) is connected to the gas storage chamber (91) through a first spring (95).

3. The sewage suction and cleaning device for a swimming training pool according to claim 2, characterized in that: An air regulating chamber (10) is connected to the gas storage chamber (91). A push plate (101) is slidably embedded in the air regulating chamber (10). A second sealing plug (102) is provided on the side of the push plate (101) facing the inside of the air regulating chamber (10). A screw rod (103) is provided on the push plate (101). The axial direction of the screw rod (103) is the same as the length direction of the air regulating chamber (10), and the screw rod (103) is rotatably connected to the push plate (101) around its own axis and is in threaded cooperation with the air regulating chamber (10).

4. The sewage suction and cleaning device for a swimming training pool according to any one of claims 1 to 3, characterized in that: An inner installation groove (42) is provided on the inner wall of the installation ring (4). The inner elastic airbag (6) includes an inner installation part (61) inserted into the inner installation groove (42). The inner installation part (61) is connected to an inner clamping part (63) through an inner telescopic part (62). The inner installation part (61) is connected to the corresponding air pipe (96). The inner telescopic part (62) makes the inner clamping part (63) enter and exit the inner sealing slot (52) through telescoping.

5. The sewage suction and cleaning device for a swimming training pool according to claim 4, characterized in that: A side installation groove (31) is provided on the end face of the filter cartridge (3). The side elastic airbag (7) includes a side installation part (71) inserted into the side installation groove (31). The side installation part (71) is connected to a side clamping part (73) through a side telescopic part (72). The side installation part (71) is connected to the corresponding air pipe (96). The side telescopic part (72) makes the side clamping part (73) enter and exit the side sealing slot (24) through telescoping.

6. The sewage suction and cleaning device for a swimming training pool according to claim 5, wherein: The side mounting portion (71) is provided with insertion posts, and the slot wall of the side mounting groove (31) is provided with slots for the insertion posts to slide and be inserted. When the side mounting portion (71) is inserted into the side mounting groove (31), the insertion posts will be inserted into the slots.

7. The sewage suction and cleaning device for a swimming training pool according to claim 2 or 3, characterized in that: Sealing units (8) are provided at both ends of the mounting ring (4). The sealing unit (8) includes a sealing ring (81) connected to the mounting ring (4) through a second spring (82). When the second spring (82) is in a natural state, the sealing ring (81) will be inserted into the filter cartridge (3) and the purification barrel (2) and seal the docking portion between the filter cartridge (3) and the access port (23); The sealing ring (81) is connected to the pressure seat (92) through a pull rope (97). When the pressure seat (92) extracts the air in the inner elastic airbag (6) and the side elastic airbag (7), it will pull the sealing ring (81) away from the inner side of the purification barrel (2) through the pull rope (97).

8. The sewage suction and cleaning device for a swimming training pool according to claim 7, characterized in that: The sealing ring (81) is connected to the mounting ring (4) through a corrugated sleeve (83). The corrugated sleeve (83), the sealing ring (81) and the mounting ring (4) are coaxially arranged. The pull rope (97) and the second spring (82) are located outside the corrugated sleeve (83).

9. The sewage suction and cleaning device for a swimming training pool according to claim 8, characterized in that: Sealing seat holders (25) arranged in a ring shape and mounted on the inner wall of the purification barrel (2) are provided at both ends of the access port (23). A sealing cavity (26) for the sealing ring (81) to be inserted is provided on the outer wall of the sealing seat holder (25).

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