Multi-stage filtering device for steam bubble water machine

Abstract

The invention discloses a multi-stage filtering device for a bubble water machine, and relates to the technical field of filtering devices.The multi-stage filtering device comprises the bubble water machine and a backflow box fixedly connected to a water inlet of the bubble water machine, the top of the backflow box is fixedly connected with a filtering box, and a filtering soft film is arranged on the inner side of the filtering box; the winding mechanism is located on the inner side of the filtering box and used for winding the filtering soft film; the second piston plate is arranged on the inner side of the filter box, a first piston plate is fixedly connected to the inner side of the second piston plate through a bolt assembly, and an auxiliary switcher used for switching the position of the first piston plate is arranged on the inner side of the filter box; the air injection assembly is located on the inner side of the filtering box and used for washing the filtering soft film. According to the sparkling water machine, through cooperation of the first piston plate and other parts, multi-stage filtering of water entering the sparkling water machine is achieved, and therefore the cleanliness and taste of the water are improved.

Description

Technical Field

[0001] The invention relates to the technical field of filtering devices, in particular to a multi-stage filtering device for a sparkling water machine. Background Art

[0002] A sparkling water machine is a device specially used to make sparkling water. It injects carbon dioxide gas into water to form drinking water rich in bubbles. Working principle: The working principle of a sparkling water machine is mainly to use compressed carbon dioxide gas and inject it into water under high pressure to saturate the water with carbon dioxide, thereby generating bubbles. This process usually involves a gas cylinder or gas bomb to store compressed carbon dioxide.

[0003] The existing sparkling water machine only filters water through a simple filter during use. However, the filter simply blocks the dirt and may not be able to filter the drinking water thoroughly. In particular, the presence of chlorine and odor in the water will affect the user's taste. For this reason, we provide a multi-stage filtration device for a sparkling water machine to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a multi-stage filtering device for a sparkling water machine in order to solve the problem that water used in a sparkling water machine cannot be filtered in multiple stages.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-stage filtering device for a sparkling water machine, comprising: a sparkling water machine and a reflux box fixedly connected to the water inlet of the sparkling water machine, the top of the reflux box is fixedly connected to a filter box, and a filter soft membrane is arranged on the inner side of the filter box; a winding mechanism is located on the inner side of the filter box and is used to wind up the filter soft membrane; a second piston plate, the second piston plate is arranged on the inner side of the filter box, the inner side of the second piston plate is fixedly connected to the first piston plate by a bolt assembly, and the inner side of the filter box is provided with an auxiliary switch for switching the position of the first piston plate; an air jet assembly is located on the inner side of the filter box and is used to flush the filter soft membrane.

[0006] As a further solution of the present invention: the winding mechanism includes a filter frame fixedly connected to the inner side of the filter box, the filter soft membrane passes through the middle of the filter frame, two drive motors are installed on the top of the filter box, the output ends of the two drive motors are fixedly connected to a winding rod, and one end of the winding rod passes through the inner side of the filter box and winds up the filter soft membrane.

[0007] As a further solution of the present invention: the auxiliary switch includes a piston shell fixedly connected to the inside of the filter box, the second piston plate is slidably connected to the inside of the piston shell, a piston block is fixedly connected to one side of the second piston plate, and the piston block is slidably connected to the inner side of the piston shell, the piston block, the second piston plate and the first piston plate form a piston body inside the piston shell, the piston body performs piston motion inside the piston shell, second piston plates communicating with the interior are opened on both sides of the piston shell, and a sealing cover is fixedly connected to the top of the filter box by a bolt assembly.

[0008] As a further solution of the present invention: the auxiliary switch also includes a one-way threaded screw rotatably connected to the inner side of the piston shell, the piston block is threadedly connected to the outer wall of the one-way threaded screw, and one end of the one-way threaded screw passes through the top of the piston shell, the winding rod and the outer wall of the one-way threaded screw are fixedly connected to a pulley, and belts are installed on the outer walls of the two pulleys, the top and bottom of the piston block are fixedly connected to a first corrugated hose, and one end of the two first corrugated hoses are respectively fixedly connected to the inner bottom and inner top of the piston shell, and the one-way threaded screw is arranged on the inner side of the two first corrugated hoses.

[0009] As a further solution of the present invention: the front and rear sides of the first piston plate and the front and rear sides of the second piston plate are composed of multiple filter screens, and the inner side of the first piston plate is fixedly connected with multiple partitions, and the multiple partitions separate the filter screens on the front and rear sides of the first piston plate.

[0010] As a further solution of the present invention: the jet assembly includes two support tubes fixedly connected to the inner side of the filter frame, the air outlets of the two support tubes are fixedly connected to a plurality of exhaust pipes, the plurality of exhaust pipes are fixedly connected through an exhaust plate, and the exhaust plate is arranged at the bottom of the filter soft membrane, a second one-way valve is fixedly connected to the air inlet of one of the support tubes, and one end of the second one-way valve passes through the interior of the piston shell, a piston sleeve is fixedly connected to the inner side of the piston shell, and one end of the piston sleeve passes through the interior of the filter box and is fixedly connected to the filter box, the A second corrugated hose is fixedly connected to the end of the piston sleeve, and one end of the second corrugated hose is fixedly connected to the inner side of the piston shell, an air inlet penetrating to the outside is opened on the inner side of the piston sleeve, a third one-way valve is fixedly connected to the air inlet of the piston sleeve, a micro electric push rod is installed on one side of the filter box, and the output end of the micro electric push rod penetrates into the interior of the piston sleeve and is fixedly connected to a first piston ring, and the first piston ring is slidably connected to the interior of the piston sleeve, and a sealing ring for sealing the gap between the output end of the piston sleeve and the piston sleeve is provided.

[0011] As a further solution of the present invention: the jet assembly also includes an air guide pipe fixedly connected to the air inlet of the other support tube, two of the piston sleeve and the second corrugated hose are provided, the two piston sleeves are connected by a connecting pipe, a second piston ring is slidably connected to the inside of the other piston sleeve, and a connecting spring is installed between the second piston ring and the piston sleeve, a first one-way valve is installed at the air inlet of the air guide pipe, and one end of the first one-way valve extends to the inside of the second corrugated hose.

[0012] As a further solution of the present invention: a groove is opened on the inner side of the filter frame, a piston sleeve is fixedly connected to the inner side of the groove, and the piston sleeve is attached to the top of the filter soft membrane, and a fixed tube is fixedly connected to the inner side of the filter frame, and one end of the fixed tube extends to the inside of the groove.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the coordination of the first piston plate and other parts, firstly, the reverse osmosis filter, the mineralization filter and the ultraviolet sterilization lamp can be distributed in sequence from top to bottom in the reflux box. The reverse osmosis filter removes tiny particles and microorganisms in the water through a physical barrier, and the mineralization filter further optimizes the water quality, removes heavy metals, and increases the mineral content in the water; the post-filter ensures the safety of the water quality, kills bacteria and viruses in the water through ultraviolet rays or other means, and at the same time, activated carbon particles are placed inside the first piston plate to remove odors and bacteria, and at the same time, the soft filter membrane set at the front end is used to filter the particles in the water, thereby realizing multi-stage filtration of the water entering the bubble water machine, thereby improving the cleanliness and taste of the water; 2. By setting up a reeling mechanism, the drive motor can be controlled to start intermittently through the PLC controller. When the filter soft membrane located inside the filter frame has been used for a long period of time, two drive motors can be started. The output end of one drive motor drives a reeling rod to reel the filter soft membrane, and the output end of the other drive motor drives a reeling rod to release the filter soft membrane, so that the filter soft membrane can move laterally, so that the originally used filter soft membrane moves to the outside of the filter frame, and the new filter soft membrane is moved to the inside of the filter frame for filtering, thereby ensuring a continuous and efficient filtering effect and reducing the cost and time of manual maintenance. Users do not need to regularly check and manually replace the soft membrane, which saves time and energy, thereby improving the overall practicality of the device; 3. By setting an auxiliary switch, the activated carbon particles filled between every two partitions, when the winding rod rotates, the one-way threaded screw is driven to rotate synchronously through the cooperation of the pulley and the pulley, thereby driving the piston block to drive the first piston plate to move upward through the second piston plate. When the filter soft membrane stops moving, the unused activated carbon particles move to one side of the through groove, and the used activated carbon particles are removed, thereby realizing the automatic replacement of the activated carbon particles. By automatically replacing the activated carbon particles, it can be ensured that there is always fresh and efficient activated carbon in the filter device, thereby continuously providing high-quality filtering and purification effects; 4. By setting the jet assembly, when the gas is discharged from the inside of the support tube located on the left side, the filter soft membrane located near the left side is actually rolled up. When the second piston plate moves upward, since the piston block, the second piston plate and the first piston plate form a piston body inside the piston shell, the gas inside the piston shell can be pushed into the inside of the second one-way valve through the air inlet, and introduced into the exhaust plate through the support tube and the exhaust pipe, so as to be discharged through the filter soft membrane. When the pressurized gas is discharged into the bottom of the filter soft membrane, the pressurized gas is discharged into the bottom of the filter soft membrane, which will form a backwashing effect on the inside of the filter soft membrane. This backwashing can more effectively remove impurities and particulate matter inside and on the surface of the filter soft membrane, thereby maintaining the permeability and filtration efficiency of the filter soft membrane, so that the filter soft membrane can be used for a long time without replacement, thereby improving the overall practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the internal structure of the filter box of the present invention; Figure 3 It is a cross-sectional view of the filter box of the present invention; Figure 4 It is a structural schematic diagram of one side of the piston housing of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the internal structure of the piston housing of the present invention; Figure 7 It is a schematic diagram of the structure of the second piston plate of the present invention; Figure 8 is a cross-sectional view of a piston housing of the present invention; Fig. 9 For the present invention Figure 8 Enlarged view of point B in the middle; Fig.10 For the present invention Figure 8 Enlarged view of point C in the middle; Fig.11It is a cross-sectional view of the filter frame of the present invention; Fig.12 It is a schematic diagram of the structure of the jet assembly of the present invention.

[0015] In the figure: 1. bubble water machine; 2. filter box; 3. reflux box; 4. filter frame; 5. filter soft membrane; 6. drive motor; 7. winding rod; 8. air guide tube; 9. piston shell; 10. micro electric push rod; 11. partition; 12. first piston plate; 13. through groove; 14. second piston plate; 15. piston block; 16. first corrugated hose; 17. one-way threaded screw; 18. belt; 19. pulley; 20. connecting pipe; 21. sealing cover; 22. piston sleeve; 23. second corrugated hose; 24. first one-way valve; 25. second one-way valve; 26. air inlet; 27. third one-way valve; 28. first piston ring; 29. ​​support pipe; 30. exhaust plate; 31. exhaust pipe; 32. fixing pipe; 33. connecting spring; 34. groove; 35. second piston ring. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0018] See also Figures 1 to 12, the present embodiment provides a multi-stage filtering device for a bubble water machine, comprising: a bubble water machine 1 and a reflux box 3 fixedly connected to the water inlet of the bubble water machine 1, the top of the reflux box 3 is fixedly connected to a filter box 2, and a filter soft membrane 5 is arranged on the inner side of the filter box 2; a winding mechanism is located on the inner side of the filter box 2 and is used to wind up the filter soft membrane 5, a second piston plate 14, the second piston plate 14 is arranged on the inner side of the filter box 2, and the inner side of the second piston plate 14 is fixedly connected to the first piston plate 12 through a bolt assembly, the winding mechanism comprises a filter frame 4 fixedly connected to the inner side of the filter box 2, the filter soft membrane 5 passes through the middle of the filter frame 4, two driving motors 6 are installed on the top of the filter box 2, the output ends of the two driving motors 6 are fixedly connected to a winding rod 7, and one end of the winding rod 7 passes through the inner side of the filter box 2 and winds up the filter soft membrane 5; First, the interior of the reflux box 3 may be sequentially distributed with a reverse osmosis filter, a mineralization filter, and an ultraviolet sterilization lamp from top to bottom in the longitudinal direction. The reverse osmosis filter removes tiny particles and microorganisms in the water through a physical barrier, and the mineralization filter further optimizes the water quality, removes heavy metals, and increases the mineral content in the water; the post-filter ensures the safety of the water quality, kills bacteria and viruses in the water through ultraviolet rays or other means, and at the same time, activated carbon particles are placed inside the first piston plate 12 to remove odors and bacteria, and at the same time, the particulate matter in the water is filtered through the filter soft membrane 5 set at the front end, thereby realizing multi-stage filtration of the water entering the bubble water machine 1, thereby improving the cleanliness and taste of the water; The drive motor 6 can be controlled by the PLC controller to start intermittently. When the filter soft membrane 5 located inside the filter frame 4 has been used for a long period of time, two drive motors 6 can be started, and the output end of one drive motor 6 drives a reeling rod 7 to reel the filter soft membrane 5, and the output end of the other drive motor 6 drives a reeling rod 7 to release the filter soft membrane 5, so that the filter soft membrane 5 can move laterally, so that the originally used filter soft membrane 5 moves to the outside of the filter frame 4, and the new filter soft membrane 5 is moved to the inside of the filter frame 4 for filtering, thereby ensuring a continuous and efficient filtering effect and reducing the cost and time of manual maintenance. Users do not need to regularly check and manually replace the soft membrane, thereby saving time and energy, and thus improving the overall practicality of the device.

[0019] See also Figure 2 to Figure 8, an auxiliary switch for switching the position of the first piston plate 12 is provided on the inner side of the filter box 2, the auxiliary switch includes a piston shell 9 fixedly connected to the inside of the filter box 2, a second piston plate 14 is slidably connected to the inside of the piston shell 9, a piston block 15 is fixedly connected to one side of the second piston plate 14, and the piston block 15 is slidably connected to the inner side of the piston shell 9, the piston block 15, the second piston plate 14 and the first piston plate 12 form a piston body inside the piston shell 9, and the piston body performs piston movement inside the piston shell 9. Second piston plates 14 communicating with the interior are provided on both sides of the piston shell 9, and a sealing cover 21 is fixedly connected to the top of the filter box 2 by a bolt assembly. The auxiliary switch also includes a one-way threaded screw 17 rotatably connected to the inner side of the piston shell 9, and the piston block 15 is threadedly connected On the outer wall of the one-way threaded screw 17, and one end of the one-way threaded screw 17 penetrates to the top of the piston shell 9, the winding rod 7 and the outer wall of the one-way threaded screw 17 are fixedly connected with a pulley 19, and the outer walls of the two pulleys 19 are installed with belts 18. The top and bottom of the piston block 15 are fixedly connected with a first corrugated hose 16, and one end of the two first corrugated hoses 16 is respectively fixedly connected to the inner bottom and the inner top of the piston shell 9, and the one-way threaded screw 17 is arranged on the inner side of the two first corrugated hoses 16. The front and rear sides of the first piston plate 12 and the front and rear sides of the second piston plate 14 are composed of multiple filter screens. The inner side of the first piston plate 12 is fixedly connected with multiple partitions 11, and the multiple partitions 11 separate the filter screens on the front and rear sides of the first piston plate 12; The activated carbon particles filled between every two partitions 11, when the winding rod 7 rotates, drive the one-way threaded screw 17 to rotate synchronously through the cooperation of the pulley 19 and the pulley 19, thereby driving the piston block 15 to drive the first piston plate 12 to move upward through the second piston plate 14. When the filter soft membrane 5 stops moving, the unused activated carbon particles move to the side of the through groove 13, and the used activated carbon particles are removed, thereby realizing automatic replacement of the activated carbon particles. By automatically replacing the activated carbon particles, it can be ensured that there is always fresh and efficient activated carbon in the filter device, thereby continuously providing high-quality filtering and purification effects.

[0020] See also Figure 8 to Figure 12The jet assembly is located inside the filter box 2 and is used to flush the filter soft membrane 5. The jet assembly includes two support tubes 29 fixedly connected to the inside of the filter frame 4. The air outlets of the two support tubes 29 are fixedly connected with a plurality of exhaust pipes 31. The plurality of exhaust pipes 31 are fixedly connected through an exhaust plate 30, and the exhaust plate 30 is arranged at the bottom of the filter soft membrane 5. A second one-way valve 25 is fixedly connected to the air inlet of one of the support tubes 29, and one end of the second one-way valve 25 penetrates into the interior of the piston shell 9. The interior of the piston shell 9 The piston sleeve 22 is fixedly connected to the side, and one end of the piston sleeve 22 passes through the interior of the filter box 2 and is fixedly connected to the filter box 2. The end of the piston sleeve 22 is fixedly connected to the second corrugated hose 23, and one end of the second corrugated hose 23 is fixedly connected to the inner side of the piston shell 9. The inner side of the piston sleeve 22 is provided with an air inlet 26 that passes through the outside, and the air inlet of the piston sleeve 22 is fixedly connected to a third non-return valve 27. A micro electric push rod 10 is installed on one side of the filter box 2, and the output end of the micro electric push rod 10 passes through A first piston ring 28 is fixedly connected to the interior of the piston sleeve 22, and the first piston ring 28 is slidably connected to the interior of the piston sleeve 22. A sealing ring for sealing the gap between the output end of the piston sleeve 22 and the piston sleeve 22 is provided. The jet assembly also includes an air guide pipe 8 fixedly connected to the air inlet of another support pipe 29. Two piston sleeves 22 and a second corrugated hose 23 are provided. The two piston sleeves 22 are connected through the connecting pipe 20. The interior of the other piston sleeve 22 is slidably connected to the first piston ring 28. A second piston ring 35 is provided, and a connecting spring 33 is installed between the second piston ring 35 and the piston sleeve 22. A first one-way valve 24 is installed at the air inlet of the air guide pipe 8, and one end of the first one-way valve 24 extends to the inside of the second corrugated hose 23. A groove 34 is provided on the inner side of the filter frame 4, and the inner side of the groove 34 is fixedly connected with the piston sleeve 22, and the piston sleeve 22 is attached to the top of the filter soft membrane 5. A fixed tube 32 is fixedly connected to the inner side of the filter frame 4, and one end of the fixed tube 32 extends to the inside of the groove 34; When the gas is discharged from the inside of the support tube 29 located on the left side, the filter soft membrane 5 located near the left side is actually rolled up. When the second piston plate 14 moves upward, since the piston block 15, the second piston plate 14 and the first piston plate 12 form a piston body inside the piston shell 9, the gas inside the piston shell 9 can be pushed into the inside of the second one-way valve 25 through the air inlet 26, and introduced into the inside of the exhaust plate 30 through the support tube 29 and the exhaust pipe 31, so as to be discharged through the filter soft membrane 5. When the pressurized gas is discharged into the bottom of the filter soft membrane 5, the pressurized gas is discharged into the bottom of the filter soft membrane 5, which will form a backwashing effect on the inside of the filter soft membrane 5. This backwashing can more effectively remove impurities and particulate matter inside and on the surface of the filter soft membrane 5, thereby maintaining the permeability and filtration efficiency of the filter soft membrane 5, so that the filter soft membrane 5 can be used for a long time without replacement, thereby improving the overall practicality of the device; A filter bag for filtering gas can be installed at the air inlet of the third one-way valve 27. When the second piston plate 14 moves upward, the piston sleeve 22 at the bottom can suck external gas into the interior through the third one-way valve 27 at the bottom. When the reeling filter soft membrane 5 is reversely operated, the reeling rod 7 on the right is reeling, and the micro electric push rod 10 can be started. The output end of the micro electric push rod 10 drives the first piston ring 28 to pass over the air inlet 26 and block the front of the second one-way valve 25, thereby blocking the flow of the air inlet 26 and the second one-way valve 25. At the same time, the first piston ring 28 is moved forward to form a suction on the inside of the piston sleeve 22 at the bottom, so that the extrusion force on the connecting spring 33 is gradually reduced, thereby driving the second piston ring 35 to reset, so that the second piston ring 35 passes over the air inlet 26 opened on the inner side of the piston sleeve 22 at the bottom, thereby forming a barrier between the air inlet 26 and the third one-way valve 27, so that during the downward movement of the second piston plate 14, the bottom of the reeling filter soft membrane 5 on the other side can be jetted for cleaning; It can be connected to an external suction pump, and a collection bucket for collecting dirt can be installed on one side of the bubble water machine 1, or the output end of the suction pump can be connected to a sewage pipe through a pipeline so that the dirt can be directly discharged.

[0021] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A multi-stage filtration device for a sparkling water machine, characterized in that: include: A bubble water machine (1) and a reflux box (3) fixedly connected to the water inlet of the bubble water machine (1), the top of the reflux box (3) being fixedly connected to a filter box (2), the inner side of the filter box (2) being provided with a filter soft membrane (5); A reeling mechanism, located inside the filter box (2), and used for reeling the filter soft membrane (5); a second piston plate (14), the second piston plate (14) being arranged on the inner side of the filter box (2), the inner side of the second piston plate (14) being fixedly connected to the first piston plate (12) via a bolt assembly, and the inner side of the filter box (2) being provided with an auxiliary switch for switching the position of the first piston plate (12); An air jet assembly is located inside the filter box (2) and is used to flush the filter soft membrane (5).

2. A multi-stage filtration device for a sparkling water machine according to claim 1, characterized in that: The winding mechanism comprises a filter frame (4) fixedly connected to the inner side of the filter box (2), the filter soft membrane (5) passes through the middle of the filter frame (4), two drive motors (6) are installed on the top of the filter box (2), the output ends of the two drive motors (6) are fixedly connected to a winding rod (7), and one end of the winding rod (7) passes through the inner side of the filter box (2) and winds up the filter soft membrane (5).

3. A multi-stage filtration device for a sparkling water machine according to claim 2, characterized in that: The auxiliary switch comprises a piston shell (9) fixedly connected to the inside of the filter box (2); the second piston plate (14) is slidably connected to the inside of the piston shell (9); a piston block (15) is fixedly connected to one side of the second piston plate (14), and the piston block (15) is slidably connected to the inner side of the piston shell (9); the piston block (15), the second piston plate (14) and the first piston plate (12) form a piston body inside the piston shell (9); the piston body performs piston motion inside the piston shell (9); the second piston plates (14) communicating with the inside are provided on both sides of the piston shell (9); and a sealing cover (21) is fixedly connected to the top of the filter box (2) via a bolt assembly.

4. A multi-stage filtration device for a sparkling water machine according to claim 3, characterized in that: The auxiliary switch also includes a one-way threaded screw (17) rotatably connected to the inner side of the piston housing (9); the piston block (15) is threadedly connected to the outer wall of the one-way threaded screw (17), and one end of the one-way threaded screw (17) passes through the top of the piston housing (9); the winding rod (7) and the outer wall of the one-way threaded screw (17) are both fixedly connected to a pulley (19), and the outer walls of the two pulleys (19) are equipped with belts (18); the top and bottom of the piston block (15) are both fixedly connected to a first corrugated hose (16), and one end of the two first corrugated hoses (16) are respectively fixedly connected to the inner bottom and inner top of the piston housing (9); the one-way threaded screw (17) is arranged on the inner sides of the two first corrugated hoses (16).

5. A multi-stage filtration device for a sparkling water machine according to claim 4, characterized in that: The front and rear sides of the first piston plate (12) and the front and rear sides of the second piston plate (14) are each composed of a plurality of filter screens, a plurality of partition plates (11) are fixedly connected to the inner side of the first piston plate (12), and the plurality of partition plates (11) separate the filter screens on the front and rear sides of the first piston plate (12).

6. A multi-stage filtration device for a sparkling water machine according to claim 5, characterized in that: The jet assembly comprises two support tubes (29) fixedly connected to the inner side of the filter frame (4), a plurality of exhaust pipes (31) being fixedly connected to the air outlets of the two support tubes (29), the plurality of exhaust pipes (31) being fixedly connected via an exhaust plate (30), and the exhaust plate (30) being arranged at the bottom of the filter soft membrane (5), a second one-way valve (25) being fixedly connected to the air inlet of one of the support tubes (29), and one end of the second one-way valve (25) passing through the interior of the piston shell (9), a piston sleeve (22) being fixedly connected to the inner side of the piston shell (9), and one end of the piston sleeve (22) passing through the interior of the filter box (2) and being fixedly connected to the filter box (2), and the piston sleeve (22) A second corrugated hose (23) is fixedly connected to the end, and one end of the second corrugated hose (23) is fixedly connected to the inner side of the piston shell (9); an air inlet (26) penetrating to the outside is opened on the inner side of the piston sleeve (22); a third one-way valve (27) is fixedly connected to the air inlet of the piston sleeve (22); a micro electric push rod (10) is installed on one side of the filter box (2); the output end of the micro electric push rod (10) penetrates into the interior of the piston sleeve (22) and is fixedly connected to a first piston ring (28); the first piston ring (28) is slidably connected to the interior of the piston sleeve (22); and a sealing ring for sealing a gap between the output end of the piston sleeve (22) and the piston sleeve (22) is provided.

7. A multi-stage filtration device for a sparkling water machine according to claim 6, characterized in that: The jet assembly further comprises an air guide pipe (8) fixedly connected to the air inlet of the other support pipe (29), two piston sleeves (22) and two second corrugated hoses (23) are provided, the two piston sleeves (22) are connected via a connecting pipe (20), a second piston ring (35) is slidably connected inside the other piston sleeve (22), and a connecting spring (33) is installed between the second piston ring (35) and the piston sleeve (22), a first one-way valve (24) is installed at the air inlet of the air guide pipe (8), and one end of the first one-way valve (24) extends to the inside of the second corrugated hose (23).

8. The multi-stage filtration device for a sparkling water machine according to claim 2, characterized in that: A groove (34) is provided on the inner side of the filter frame (4), a piston sleeve (22) is fixedly connected to the inner side of the groove (34), and the piston sleeve (22) is attached to the top of the filter soft membrane (5), and a fixed tube (32) is fixedly connected to the inner side of the filter frame (4), and one end of the fixed tube (32) extends to the inside of the groove (34).

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