A switchable working state impeller pump and a washing device formed by the same

Abstract

This invention discloses a switchable-state impeller pump and a washing device thereof, comprising an impeller pump body, the impeller pump body including a pump head body, the pump head body having a drain chamber and a filter chamber, the drain chamber being connected to an inlet and an outlet, the outlet having a drain pipe connected to a drain structure, the drain chamber having an impeller, and a DC motor for providing power to the impeller and drain structure being located between the pump head body and the drain structure, one end of the DC motor having a first drive component connected to the impeller, and the other end having a second drive component connected to the drain structure, the forward or reverse rotation of the drive shaft controlling the second drive component to switch the working state of the drain structure to start or stop transporting residual sewage in the drain chamber to the drain pipe. This invention can switch the working state of the drain structure on the impeller pump body, avoiding idle drain structure consumption, extending the service life of the drain structure, and reducing the energy consumption of the impeller pump.

Description

Technical Field

[0001] This invention relates to the field of fluid transport equipment technology, and more specifically to an impeller pump with switchable operating states and a washing device thereof. Background Technology

[0002] There are many types of washing devices, such as washing machines and dishwashers. Taking a washing machine as an example, a washing machine mainly relies on its internal washing tank to wash and spin-dry clothes. The wastewater generated is pumped directly to the drain pipe by a drain pump (impeller pump), and then transported to the floor drain or other appropriate places. When the water in the washing tank is about to be drained, air will mix into the drain pump. The drain pump cannot pump out the air, so it cannot completely drain the wastewater. This can easily cause some wastewater to flow back to the drain pump and accumulate. Therefore, improvements have been made to the existing technology by adding a venting structure to the impeller pump. This allows residual wastewater to be drawn in and discharged through a venting pipe via a diaphragm pump. A filter screen is also added to the motor's output shaft to remove impurities mixed in the wastewater, preventing them from entering the venting structure. A brush head is located on the side of the filter screen to clean away impurities. However, in the existing technology, the venting structure, driven by an AC motor, drains and vents residual wastewater simultaneously. This means that even when venting is not needed, the venting structure operates under motor-driven inactivity, which can shorten its lifespan. Additionally, the impeller pump's energy consumption increases, raising the operating cost of the washing device. Summary of the Invention

[0003] The purpose of this invention is to provide a switchable operating state impeller pump and a washing device thereof, which can switch the operating state of the venting structure on the impeller pump body by reversing the DC motor according to actual needs, thereby avoiding the empty consumption of the venting structure, extending the service life of the venting structure, reducing the energy consumption of the impeller pump, and reducing the operating cost of the washing device.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following solution:

[0005] A switchable operating state impeller pump includes an impeller pump body, which includes a pump head body. The pump head body has a drainage chamber and a filter chamber. The drainage chamber is connected to an inlet and an outlet. The outlet has a drain pipe connected to a drain structure. An impeller is located in the drainage chamber. A DC motor for providing power to the impeller and the drain structure is located between the pump head body and the drain structure. One end of the drive shaft of the DC motor has a first drive component connected to the impeller, and the other end has a second drive component connected to the drain structure. The forward or reverse rotation of the drive shaft controls the second drive component to switch the operating state of the drain structure to start or stop transporting residual sewage in the drainage chamber to the drain pipe.

[0006] By adopting the above technical solution, the AC motor in the impeller pump body is replaced with a DC motor. When only a large amount of water needs to be drained from the drainage chamber, the drive shaft of the DC motor drives the first drive component to directly rotate the impeller, thereby pumping the sewage in the drainage chamber to the drainage interface. At the same time, the drive shaft drives the second drive component to switch the venting structure to a stopped state, that is, the venting structure will not operate when the impeller is pumping water and is in a temporary state. When the water in the drainage chamber has been basically drained and the remaining sewage needs to be drained, the drive shaft drives the second drive component to switch the venting structure from the stopped state to the working state, that is, the venting structure starts to operate, transporting the remaining sewage in the drainage chamber to the drain pipe and discharging it, avoiding sewage accumulation and foul odor. Therefore, this solution can switch the working state of the venting structure on the impeller pump body according to actual needs by rotating the DC motor in both directions. It only operates when the remaining sewage needs to be drained, and the venting structure is in a stopped state when the impeller is draining water. This effectively avoids the waste of the venting structure, extends the service life of the venting structure, reduces the power consumption of the impeller pump, and saves operating costs.

[0007] Furthermore, the drainage structure is located on the right side of the second drive component. The drainage structure includes a deceleration drive assembly, a pressure-sensitive diaphragm, a partition, and a housing. The housing is formed by connecting the pump housing and the outer cover with screws. The partition is snapped between the pump housing and the outer cover. The drainage structure has an inlet chamber and an outlet chamber that are respectively connected to the drainage chamber and the drainage pipe. The pressure-sensitive diaphragm is circumferentially sealed and pressed between the partition and the housing. A pumping chamber is formed between the pressure-sensitive diaphragm and the partition. The partition has an inlet hole and an outlet hole that are respectively connected to the inlet chamber and the outlet chamber. An inlet one-way valve flap fixed to the partition and covering the inlet hole is provided on one side of the inlet hole. An outlet one-way valve flap fixed to the partition and covering the outlet hole is provided on one side of the outlet hole. Under the joint action of the deceleration drive assembly and the second drive component, the pressure-sensitive diaphragm pumps the residual sewage in the drainage chamber to the drainage pipe.

[0008] It also includes a water channel plate located at the lower end of the partition. The water channel plate is formed by a bottom plate and a top plate that are fitted and snapped together. A second sealing ring is pressed between the partition and the water channel plate. An inlet channel and an outlet channel are formed inside the top plate. The inlet end of the inlet channel is connected to the filter water chamber, and the outlet end is connected to the inlet chamber. One end of the outlet channel is connected to the outlet chamber, and the other end is connected to a pipe plug. The upper end of the pipe plug is fitted into the outlet channel of the drain pipe, and a first sealing ring is embedded in the circumference of the pipe plug.

[0009] Furthermore, the deceleration drive assembly includes a drive gear, a driven gear, a drive linkage, and an eccentric column. The drive gear is connected to the second drive component. A first bearing is provided on the drive shaft to the left of the drive gear. The lower end of the drive gear meshes with the driven gear. The driven gear is rotatably connected to a positioning column on the pump housing. The positioning column extends towards the outer cover and is eccentrically connected to the eccentric column. The left side of the eccentric column is connected to the right side of the driven gear. A second bearing is sleeved on the eccentric column. The outer ring of the second bearing is sleeved with the drive linkage. The lower end of the drive linkage is connected to the top of the pressure-sensing diaphragm. Locking screws connect the pressure-sensing diaphragm and the drive linkage into one unit from bottom to top.

[0010] Furthermore, the second driving component includes a second threaded rod, a second nut, a second south pole magnetic sleeve, a second north pole magnetic sleeve, and a second rotating shaft. The surface of the second threaded rod has external threads. One end of the second threaded rod is connected to the right end of the drive shaft, and the other end is connected to the second rotating shaft. The second nut is threaded onto the second threaded rod. The second south pole magnetic sleeve is fixedly sleeved onto the second nut. Both ends of the second threaded rod are provided with second limiting rods. Both sides of the second nut are provided with second baffles. The second north pole magnetic sleeve is fixedly connected to the drive gear. The right end of the second rotating shaft passes through the drive gear and is rotatably connected to the drive gear.

[0011] Furthermore, the pump head body also has a filter water chamber connected to the drain chamber. A filter screen is provided between the drain chamber and the filter water chamber. A brush head is provided on the side of the filter screen to contact the filter screen. The filter screen is fixed on the filter screen frame. A sliding cavity adapted to the brush head is opened on the inner wall of the pump head body. The brush head is slidably disposed in the sliding cavity. The brush head is located on the side of the filter screen. A spring is provided between the brush head and the inner wall of the sliding cavity. The spring is in a compressed state. A limiting post opposite to the brush head is provided on the side wall of the sliding cavity. A multi-stage reduction structure is provided between the pump head body and the DC motor. The initial power is provided by the first driving component. The multi-stage reduction structure is composed of multiple transmission components connected to the first driving component connected in series. The multiple transmission components rotate relative to each other and transmit force step by step. The rotation speed decreases step by step towards the filter screen. The end transmission component is connected to the filter screen frame. The forward or reverse rotation of the drive shaft controls the first driving component to switch the working state of the multi-stage reduction structure to start or stop rotating.

[0012] By adopting the above technical solution, a multi-stage reduction structure with initial power provided by the first driving component is provided between the pump head body and the DC motor. The multi-stage reduction structure is composed of multiple transmission components connected in series. The transmission component at the end is connected to the filter screen frame and drives the filter screen frame to rotate. The multiple transmission components transmit the steering torque sequentially, so that the multiple transmission components rotate relative to the first driving component. The first driving component provides the initial force to the transmission component at the beginning. The rotation speed of the multiple transmission components decreases step by step towards the filter screen, and the rotation speed of the transmission component at the end is the lowest. In this way, the rotation speed of the filter screen frame is greatly reduced relative to the rotation speed of the first driving component. As a result, the rotation speed of the filter screen is also reduced accordingly, thereby reducing the wear of the brush head per unit time, extending the service life of the brush head, avoiding frequent brush head replacement, saving time and effort, and reducing the operating cost of the impeller pump body.

[0013] Furthermore, the multi-stage reduction structure includes a primary transmission component, a secondary transmission component, and a tertiary transmission component arranged sequentially towards the filter screen. The three transmission components are installed inside the housing. The first driving component drives the primary transmission component to rotate, the primary transmission component drives the secondary transmission component to rotate, the secondary transmission component drives the tertiary transmission component to rotate, and the tertiary transmission component drives the filter screen frame to rotate. The rotational speeds of the primary, secondary, and tertiary transmission components decrease progressively.

[0014] Furthermore, the primary transmission component includes a first gearbox, a first gear disk, a first transmission tooth, and a first power tooth; the secondary transmission component includes a second gearbox, a second gear disk, a second transmission tooth, and a second power tooth; and the tertiary transmission component includes a third gearbox, a third gear disk, a third power tooth, and a transmission seat. The first transmission tooth is located on the left side of the first gear disk, the second transmission tooth is located on the left side of the second gear disk, and the transmission seat is located on the left side of the third gear disk. The left end of the transmission seat passes through the side wall of the third gearbox and connects to the middle of the filter frame. The transmission seat is rotatably connected to the left side wall of the third gearbox. The lower end of the first power tooth meshes with a drive gear, and the upper end meshes with the first gear disk. The first drive component provides power to the drive gear. The second power tooth meshes with both the first transmission tooth and the second gear disk, and the third power tooth meshes with both the second transmission tooth and the third gear disk.

[0015] Furthermore, the first driving component includes a first threaded rod, a first nut, a first south pole magnetic sleeve, a first north pole magnetic sleeve, and a first rotating shaft. The surface of the first threaded rod has external threads. One end of the first threaded rod is connected to the left end of the driving shaft, and the other end is connected to the first rotating shaft. The first nut is threadedly connected to the first threaded rod. The first south pole magnetic sleeve is fixedly sleeved on the first nut. Both ends of the first threaded rod are provided with first limiting rods. Both sides of the first nut are provided with first baffles. The first north pole magnetic sleeve is fixedly connected to the driving gear. The left end of the first rotating shaft passes through the driving gear, the first transmission gear, the second transmission gear, the transmission seat, and the impeller in sequence. The first rotating shaft is rotatably connected to the driving gear, the first transmission gear, the second transmission gear, and the transmission seat, and is fixedly connected to the middle of the impeller.

[0016] Furthermore, the first gearbox, the second gearbox, and the third gearbox are arranged side by side along the length of the first rotating shaft. The three gearboxes are disposed inside the mounting sleeve. The mounting sleeve is open on the left and closed on the right. The mounting sleeve is locked inside the housing. The drive gear is rotatably connected to the right side wall of the mounting sleeve. Mounting cavities for mounting the first gear disk and the first power gear, the second gear disk and the second power gear, and the third gear disk and the third power gear are respectively formed between the first gearbox and the right side wall of the mounting sleeve, between the second gearbox and the first gearbox, and between the third gearbox and the second gearbox. Connecting shafts for rotatably mounting the first power gear, the second power gear, and the third power gear are respectively provided on the right side wall of the mounting sleeve, the left side wall of the first gearbox, and the left side wall of the second gearbox. All three connecting shafts protrude toward the filter screen.

[0017] The first gear disk, the second gear disk, and the third gear disk are all basin structures that open to the right. The teeth are all located on the circumferential inner sidewall of the basin structure. Two positioning gears located on both sides of the first rotating shaft are symmetrically distributed on the bottom wall of the first gear disk, the second gear disk, and the third gear disk. The positioning gears mesh with their corresponding first gear disk, second gear disk, and third gear disk, respectively.

[0018] A washing device includes a washing shell and a washing tank. The washing tank is located inside the washing shell. The water outlet of the washing tank is connected to the water inlet of a pump head body via a connecting pipe. The water outlet of the pump head body is connected to a drain pipe. The drain pipe extends to the outside of the washing tank and has an extension pipe inside that is connected to an empty pipe.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. By replacing the AC motor in the impeller pump body with a DC motor, when only a large amount of water needs to be drained from the drainage chamber, the DC motor's drive shaft drives the first drive component to directly rotate the impeller, thus pumping the sewage in the drainage chamber to the drainage interface. Simultaneously, the drive shaft drives the second drive component to switch the venting structure to a stopped state; that is, the venting structure does not operate while the impeller is pumping water and remains in a suspended state. When the water in the drainage chamber has been mostly drained, and residual sewage needs to be discharged, the drive shaft drives the second drive component to switch the venting structure from the stopped state to the operating state; that is, the venting structure begins to operate, transporting the residual sewage in the drainage chamber to the drain pipe for discharge, preventing sewage accumulation and foul odors. Therefore, this solution allows for switching the operating state of the venting structure on the impeller pump body according to actual needs by rotating the DC motor in both directions. It only operates when residual sewage needs to be drained; the venting structure remains stopped when the impeller is draining water. This effectively avoids the waste of the venting structure, extends its service life, reduces the impeller pump's energy consumption, and saves on operating costs.

[0021] 2. A multi-stage reduction structure is provided between the pump head body and the DC motor, with the initial power provided by the first driving component. The multi-stage reduction structure consists of multiple transmission components connected in series. The end transmission component is connected to the filter screen frame and drives the filter screen frame to rotate. The multiple transmission components transmit the steering torque sequentially, causing the multiple transmission components to rotate relative to the first driving component. The first driving component provides the initial force to the first transmission component. The speed of the multiple transmission components decreases step by step towards the filter screen, with the speed of the end transmission component being the lowest. This greatly reduces the speed of the filter screen frame relative to the speed of the first driving component, and thus the speed of the filter screen is also reduced accordingly. This reduces the wear of the brush head per unit time, extends the service life of the brush head, avoids frequent brush head replacements, saves time and effort, and reduces the operating cost of the impeller pump body.

[0022] 3. In existing technologies, the venting structure directly drives the eccentric component through the rotational force of the output shaft, resulting in a high frequency of opening and closing of the pressure-sensitive diaphragm. This solution addresses this by setting a driving gear, which in turn drives the driven gear. The diameter of the driven gear's disc is larger than that of the driving gear, thus reducing the speed of the driven gear and achieving a deceleration effect. The rotation of the driven gear causes the drive linkage seat to move up and down, connecting to the pressure-sensitive diaphragm via the drive connecting rod. The rotation of the driven gear causes the pressure-sensitive diaphragm to open and close. The reduced speed of the driven gear lowers the frequency of the pressure-sensitive diaphragm's opening and closing, extending the service life of the pressure-sensitive diaphragm. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2 This is a side view of the structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the rear view structure of the present invention;

[0026] Figure 4 for Figure 3 EE cross-section;

[0027] Figure 5 for Figure 3 Cross-sectional view of HH section;

[0028] Figure 6 for Figure 3 Cross-sectional view of FF in the middle;

[0029] Figure 7 for Figure 2 Sectional view of AA in the middle;

[0030] Figure 8 for Figure 7 CC section view;

[0031] Figure 9 for Figure 7 Cross-sectional view of DD in the middle;

[0032] Figure 10 for Figure 3 Cross-sectional view of the middle section (BB);

[0033] Figure 11 for Figure 7 Cross-sectional view of GG in China;

[0034] Figure 12 A structural diagram showing the multi-stage deceleration structure and the venting structure when switched to the non-operating state;

[0035] Figure 13 This is a structural diagram of the washing device.

[0036] Reference numerals: 01-Washing housing, 02-Drain pipe, 03-Extension pipe, 04-Washing tank, 05-Connecting pipe, 06-Impeller pump body, 07-DC motor, 08-Outer cover, 09-Water circuit board, 10-Multi-stage reduction structure, 11-Housing shell, 12-Inlet port, 13-Pump head body, 14-Outlet port, 15-Outlet channel, 16-Pipe plug, 17-Bottom plate, 18-Top plate, 19-First sealing ring, 20-Drain pipe, 21-Inlet channel, 22-Driving gear, 23-Driven gear, 24- 25-Drive connecting rod, 26-Pressure-sensing diaphragm, 27-Pump chamber, 28-Inlet check valve, 29-Second sealing ring, 30-Locking screw, 31-Second bearing, 32-Eccentric column, 33-Second shaft, 34-Pump housing, 35-Impeller, 36-Third sealing ring, 37-Fourth sealing ring, 38-Filter screen, 39-Filter chamber, 40-Third gearbox, 41-Fifth sealing ring, 42-Third gear disc, 43-Third power gear, 44-Second gearbox, 45-Mounting sleeve, 46-The Two-gear disc, 47-sixth sealing ring, 48-drive gear, 49-magnetic ring, 50-first bearing, 51-mounting cavity, 52-seventh sealing ring, 53-positioning gear, 54-spring, 55-limiting post, 56-brush head, 57-drive gear, 58-first north pole magnetic sleeve, 59-first baffle, 60-first south pole magnetic sleeve, 61-first nut, 62-first threaded rod, 63-second south pole magnetic sleeve, 64-second nut, 65-second north pole magnetic sleeve, 66-second baffle, 67-second limiting post Positioning rod, 68-First limiting rod, 69-Second threaded rod, 70-Drive shaft, 71-First rotating shaft, 72-Inlet chamber, 73-Outlet chamber, 74-Inlet end, 75-Motor stator, 76-Filter screen frame, 77-Transmission seat, 78-Second transmission gear, 79-First transmission gear, 80-First gear disc, 81-First gearbox, 82-First power gear, 83-Second power gear, 84-Positioning column, 85-Connecting shaft, 86-Drainage channel, 87-Outlet one-way valve disc, 88-Sliding chamber, 89-Drainage chamber. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0038] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "longitudinal," "lateral," "horizontal," "inner," "outer," "front," "rear," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Example 1

[0041] A switchable operating state impeller pump includes an impeller pump body 06, which includes a pump head body 13. The pump head body 13 has a drainage chamber 89 and a filter water chamber 39. The drainage chamber 89 is connected to an inlet port 12 and an outlet port 14. The outlet port 14 has a drain pipe 20, which is connected to a drain structure. The drainage chamber 89 has an impeller 35. A DC motor 07 is provided between the pump head body 13 and the drain structure to provide power to the impeller 35 and the drain structure. One end of the drive shaft 70 of the DC motor 07 has a first drive component connected to the impeller 35, and the other end has a second drive component connected to the drain structure. The forward or reverse rotation of the drive shaft 70 controls the second drive component to switch the operating state of the drain structure to start or stop transporting residual sewage in the drainage chamber 89 to the drain pipe 20.

[0042] In this embodiment, as Figure 7 , Figure 10 , Figure 12As shown, the AC motor in the impeller pump body 06 is replaced with a DC motor 07. When only a large amount of water needs to be drained from the drainage chamber 89, the drive shaft 70 of the DC motor 07 drives the first drive component to directly rotate the impeller 35, thereby pumping the sewage in the drainage chamber 89 to the drainage port. At the same time, the drive shaft 70 drives the second drive component to switch the venting structure to a stopped state, that is, the venting structure will not operate when the impeller 35 is pumping water and is in a temporary state. When the water in the drainage chamber 89 has been basically drained and the remaining sewage needs to be drained, the drive shaft 70 drives the second drive component to vent the venting structure. When the structure switches from a stopped state to a working state, the venting structure begins to operate, transporting the residual sewage in the drainage chamber 89 to the venting pipe 20 and discharging it, thus preventing sewage accumulation and foul odors. Therefore, this solution allows for switching the working state of the venting structure on the impeller pump body 06 according to actual needs by rotating the DC motor 07 in both directions. The venting structure only operates when residual sewage needs to be vented, and remains stopped when the impeller 35 is draining water. This effectively avoids the waste of the venting structure, extends its service life, reduces the power consumption of the impeller 35 pump, and saves on operating costs.

[0043] Meanwhile, a sliding cavity 88 adapted to the brush head 56 is provided on the inner wall of the pump head body 13. The brush head 56 (generally a hard graphite sheet) is slidably disposed in the sliding cavity 88. The brush head 56 is located on the side of the impeller 35. A spring 54 is provided between the brush head 56 and the inner wall of the sliding cavity 88. The spring 54 is in a compressed state. A limiting post 55 opposite to the brush head 56 is provided on the side wall of the sliding cavity 88. Specifically, as shown... Figure 10 and Figure 11 As shown, through the extension and retraction of the spring 54, the brush head 56 can automatically move to the side of the filter screen 38 after being worn to a certain extent, so that the brush head 56 can contact the filter screen 38 and clean the debris on its surface. The limiting post 55 can effectively limit the range of the brush head 56 moving to the left.

[0044] Preferred, such as Figure 1-4As shown, the venting structure is located on the right side of the second drive component. The venting structure includes a reduction drive assembly, a pressure-sensitive diaphragm 25, a partition plate 27, and a housing. The housing is formed by connecting the pump housing 34 and the outer cover 08 with screws. The partition plate 27 is snapped between the pump housing 34 and the outer cover 08. The venting structure contains an inlet chamber 72 and an outlet chamber 73, respectively connected to the drain chamber 89 and the venting pipe 20. The pressure-sensitive diaphragm 25 is circumferentially sealed and pressed between the partition plate 27 and the housing. A pumping chamber 26 is formed between the 5 and the partition 27. The partition 27 is provided with an inlet hole and an outlet hole that are respectively connected to the inlet chamber 72 and the outlet chamber 73. An inlet one-way valve 28 fixed to the partition 27 and covering the inlet hole is provided on one side of the inlet hole, and an outlet one-way valve 87 fixed to the partition 27 and covering the outlet hole is provided on one side of the outlet hole. The pressure-sensitive diaphragm 25 pumps the residual sewage in the drainage chamber 89 to the drain pipe 20 under the joint action of the deceleration drive assembly and the second drive component.

[0045] like Figure 5 As shown, it also includes a water channel plate 09 located at the lower end of the partition 27. The water channel plate 09 is formed by the mutual fitting and snapping of the bottom plate 17 and the top plate 18. A second sealing ring 29 is pressed between the partition 27 and the water channel plate 09. A water inlet channel 21 and a water outlet channel 15 are formed in the top plate 18. The water inlet end 74 of the water inlet channel 21 is connected to the filter water chamber 39. A seventh sealing ring 52 is provided on the outside of the water inlet end 74. The water outlet end is connected to the water inlet chamber 72. One end of the water outlet channel 15 is connected to the water outlet chamber 73, and the other end is connected to a pipe plug 16. The upper end of the pipe plug 16 is fitted into the drain channel 86 of the drain pipe 20. A first sealing ring 19 is embedded circumferentially in the pipe plug 16. The pipe plug 16 is used to connect the water outlet channel 15 and the drain pipe 20.

[0046] Preferably, the deceleration drive assembly includes a drive gear 22, a driven gear 23, a drive connecting rod 24, and an eccentric column 32. The drive gear 22 is connected to the second drive component. A first bearing 50 is provided on the drive shaft 70 to the left of the drive gear 22. The lower end of the drive gear 22 meshes with the driven gear 23. The driven gear 23 is rotatably connected to a positioning column 84 on the pump housing 34. The positioning column 84 extends towards the outer cover 08 and is eccentrically connected to the eccentric column 32. The left side of the eccentric column 32 is connected to the right side of the driven gear 23. A second bearing 31 is sleeved on the eccentric column 32. The outer ring of the second bearing 31 is sleeved with the drive connecting rod 24. The lower end of the drive connecting rod 24 is connected to the top of the pressure-sensing diaphragm 25. Locking screws 30 connect the pressure-sensing diaphragm 25 and the drive connecting rod 24 into one unit from bottom to top.

[0047] like Figure 4As shown, the first sealing ring 19 can seal the installation gap between the pipe plug 16 and the drain pipe 20 to prevent water leakage. The second sealing ring 29 can improve the sealing performance between the water circuit board 09 and the outer shell to prevent water leakage. When the volume of the pump water chamber 26 in the drain structure increases, the water in the drain chamber 89 is sucked into the filter water chamber 39. Impurities are filtered out through the filter screen 38, and then enter the inlet chamber 72 through the inlet channel 21 on the water circuit board 09. Then, it enters the pump water chamber 26 through the inlet hole (not shown in the figure) at the inlet one-way valve 28. Then, the volume of the pump water chamber 26 decreases, and the sewage inside is pumped to the outlet chamber 73 through the outlet one-way valve 87 and the outlet hole (not shown in the figure). Then, it enters the drain pipe 20 through the outlet channel 15 and is transported to the designated external location by the drain channel 86 of the drain pipe 20, thus completing the discharge of residual sewage in the drain chamber 89 and preventing sewage from accumulating and emitting a foul odor that pollutes the environment.

[0048] When the venting structure is working, such as Figure 6 As shown, the drive shaft 70 drives the second drive component to rotate the drive gear 22, which in turn drives the driven gear 23. The number of teeth on the drive gear 22 is less than the number of teeth on the driven gear 23, thus creating a speed reduction principle. The speed of the driven gear 23 is lower than the speed of the drive shaft 70. The driven gear 23 drives the eccentric column 32 to rotate eccentrically, which in turn drives the drive connecting rod 24 to move up and down. The drive connecting rod 24 is connected to the pressure-sensitive diaphragm 25. The up and down movement of the drive connecting rod 24 pulls on the pressure-sensitive diaphragm 25, creating a contracting motion, thereby changing the volume of the pump chamber 26. The rotation of the driven gear 23 drives the pressure-sensitive diaphragm 25 to contract and open. Compared to the existing method where the pressure-sensitive diaphragm 25 is directly driven to contract and open by the output shaft of the motor, the speed of the driven gear 23 is reduced, which reduces the frequency of contraction and opening of the pressure-sensitive diaphragm 25 and extends its service life.

[0049] Preferably, the second driving component includes a second threaded rod 69, a second nut 64, a second south pole magnetic sleeve 63, a second north pole magnetic sleeve 65, and a second rotating shaft 33. The surface of the second threaded rod 69 has external threads. One end of the second threaded rod 69 is connected to the right end of the drive shaft 70, and the other end is connected to the second rotating shaft 33. The second nut 64 is threaded onto the second threaded rod 69. The second south pole magnetic sleeve 63 is fixedly sleeved onto the second nut 64. Both ends of the second threaded rod 69 are provided with second limiting rods 67. Both sides of the second nut 64 are provided with second baffles 66. The second north pole magnetic sleeve 65 is fixedly connected to the drive gear 22. The right end of the second rotating shaft 33 passes through the drive gear 22 and is rotatably connected to the drive gear 22.

[0050] In this scheme, the working principle of the second driving component is as follows: The existing design of the DC motor 07 is that a magnetic ring 49 is sleeved on the outside of its drive shaft 70, and a motor stator 75 is installed on the outside of the magnetic ring 49. When the impeller pump body 06 is working, the drive shaft 70 of the DC motor 07 rotates in the forward direction, driving the second threaded rod 69 to rotate synchronously, and causing the second nut 64 to move towards the magnetic ring 49, so that the second south pole magnetic sleeve 63 and the second north pole magnetic sleeve 65 are disengaged until the second limit rod 67 on the left side of the second threaded rod 69 contacts the corresponding second baffle 66. At this time, the second nut 64 rotates with the second threaded rod 69, and the second rotating shaft 33 rotates relative to the drive gear 22 but there is no rotational force transmission. The venting structure is in a stopped state, and only drainage operation is currently performed. When the sewage in the drainage chamber 89 is about to be drained, air will mix into the drainage chamber 89, and the impeller pump body 06 cannot pump the air out. This causes some sewage in the drainage pipe 02 to fall back into the drainage chamber 89. At this time, the DC motor 07 rotates in the forward direction, driving the second threaded rod 69 to rotate synchronously, and causing the second nut 64 to move towards the magnetic ring 49. This causes the second south pole magnetic sleeve 63 to disengage from the second north pole magnetic sleeve 65 until the second limit rod 67 on the left side of the second threaded rod 69 contacts the corresponding second baffle 66. At this time, the second nut 64 rotates with the second threaded rod 69, and the second rotating shaft 33 rotates relative to the drive gear 22 but there is no rotational force transmission. The venting structure is in a stopped state, and only drainage operation is currently performed. When the sewage in the drainage chamber 89 is about The drive shaft 70 of machine 07 reverses, causing the second threaded rod 69 to rotate synchronously, and causing the second nut 64 to move away from the magnetic ring 49 until the second south pole magnetic sleeve 63 and the second north pole magnetic sleeve 65 are attracted. The second limit rod 67 on the right side of the second threaded rod 69 contacts the corresponding second baffle 66. At this time, the second nut 64 rotates with the second threaded rod 69. The rotational force is transmitted to the second nut 64 through the second threaded rod 69. The second nut 64 drives the second south pole magnetic sleeve 63 to rotate synchronously. Under the action of the second limit rod 67 and the second baffle 66, the second south pole magnetic sleeve 63 drives the second north pole magnetic sleeve 65 to rotate. The second north pole magnetic sleeve 65 drives the drive gear 22 to rotate. The drive gear 22 drives the driven gear 23 to rotate, inputting power to the venting structure. The venting structure can then start to perform venting operations. By reversing the drive shaft 70, the working state of the venting structure is switched, effectively avoiding the empty consumption of the venting structure and reducing the power consumption of the impeller 35 pump.

[0051] Example 2

[0052] Preferably, the pump head body 13 also includes a water filtration chamber 39 connected to the drain chamber 89. A filter screen 38 is provided between the drain chamber 89 and the water filtration chamber 39. A brush head 56 is provided on the side of the filter screen 38, which contacts the filter screen 38. The filter screen 38 is fixed on the filter screen frame 76. A sliding cavity 88 adapted to the brush head 56 is provided on the inner wall of the pump head body 13. The brush head 56 is slidably disposed in the sliding cavity 88. The brush head 56 is located on the side of the filter screen 38. A spring 54 is provided between the brush head 56 and the inner wall of the sliding cavity 88. The spring 54 is in a compressed state. The sliding cavity 88 has a limiting post 55 on its side wall that is opposite to the brush head 56. A multi-stage reduction structure 10 with initial power provided by the first driving member is provided between the pump head body 13 and the DC motor 07. The multi-stage reduction structure 10 is composed of multiple transmission members connected to the first driving member in series. The multiple transmission members rotate relative to each other and transmit force step by step, and the rotation speed decreases step by step in the direction of the filter screen 38. The transmission member at the end is connected to the filter screen frame 76. The drive shaft 70 rotates forward or backward to control the first driving member to switch the working state of the multi-stage reduction structure 10 to start or stop rotating.

[0053] In this embodiment, a multi-stage reduction structure 10 with initial power provided by a first driving component is provided between the pump head body 13 and the DC motor 07. The multi-stage reduction structure 10 is composed of multiple transmission components connected in series. The transmission component at the end is connected to the filter screen frame 76 and drives the filter screen frame 76 to rotate. The multiple transmission components transmit steering torque sequentially, so that the multiple transmission components rotate relative to the first driving component. The first driving component provides initial force to the transmission component at the beginning. The rotation speed of the multiple transmission components decreases step by step in the direction of the filter screen 38, and the rotation speed of the transmission component at the end is the lowest. This makes the rotation speed of the filter screen frame 76 much lower than the rotation speed of the first driving component. As a result, the rotation speed of the filter screen 38 is also reduced accordingly, thereby reducing the wear of the brush head 56 per unit time, extending the service life of the brush head 56, avoiding frequent replacement of the brush head 56, saving time and effort, and reducing the operating cost of the impeller pump body 06.

[0054] Preferably, the multi-stage reduction structure 10 includes a primary transmission component, a secondary transmission component, and a tertiary transmission component arranged sequentially in the direction of the filter screen 38. The three transmission components are installed inside the housing 11. The first driving component drives the primary transmission component to rotate, the primary transmission component drives the secondary transmission component to rotate, the secondary transmission component drives the tertiary transmission component to rotate, and the tertiary transmission component drives the filter screen frame 76 to rotate. The rotational speeds of the primary, secondary, and tertiary transmission components decrease step by step.

[0055] Specifically, the multi-stage reduction structure 10 has three stages of reduction, including a primary transmission component, a secondary transmission component, and a tertiary transmission component arranged in series towards the filter screen 38. The three transmission components are installed sequentially inside the housing 11, which is integrally formed with the pump head body 13 and located between the DC motor 07 and the pump head body 13. The drive shaft 70 drives the primary transmission component to rotate, and the primary transmission component transmits the rotational force to the secondary transmission component. The rotational speed of the secondary transmission component is lower than that of the primary transmission component. The secondary transmission component transmits the rotational force to the tertiary transmission component, and the rotational speed of the tertiary transmission component is lower than that of the secondary transmission component. The tertiary transmission component is connected to the filter screen frame 76, and the tertiary transmission component drives the filter screen frame 76 to rotate at a low speed. This greatly reduces the rotational speed of the filter screen frame 76 relative to the rotational speed of the drive shaft 70, and thus the rotational speed of the filter screen 38 is also reduced accordingly. This reduces the wear of the brush head 56 per unit time, extends the service life of the brush head 56, avoids frequent replacement of the brush head 56, saves time and effort, and reduces the overall operating cost.

[0056] Preferably, the primary transmission component includes a first gearbox 81, a first gear disk 80, a first transmission gear 79, and a first power gear 82; the secondary transmission component includes a second gearbox 44, a second gear disk 46, a second transmission gear 78, and a second power gear 83; and the tertiary transmission component includes a third gearbox 40, a third gear disk 42, a third power gear 43, and a transmission base 77. The first transmission gear 79 is located on the left side of the first gear disk 80, the second transmission gear 78 is located on the left side of the second gear disk 46, and the transmission base 77 is provided with... On the left side of the third gear disk 42, the left end of the transmission seat 77 passes through the side wall of the third gear box 40 and is connected to the middle of the filter frame 76. The transmission seat 77 is rotatably connected to the left side wall of the third gear box 40. The lower end of the first power tooth 82 meshes with the drive gear 48, and the upper end meshes with the first gear disk 80. The first driving member provides power to the drive gear 48. The second power tooth 83 meshes with the first transmission tooth 79 and the second gear disk 46 at the same time. The third power tooth 43 meshes with the second transmission tooth 78 and the third gear disk 42 at the same time.

[0057] Specifically, such as Figures 7-9As shown, drive gear 48 is a pinion, as are the first transmission gear 79 and the second transmission gear 78. The first power gear 82, the second power gear 83, and the third power gear 43 are large gears, with a greater number of teeth than the drive gear, the first transmission gear 79, and the second transmission gear 78. The first gear disk 80, the second gear disk 46, and the third gear disk 42 are also large gears, having the most teeth in the multi-stage reduction structure 10, and therefore their rotational speed is the slowest. The rotation of the first driving component drives the drive gear 48 to rotate, and the rotation of the drive gear 48 drives the first power gear... When gear 82 rotates, the first power gear 82 drives the first gear disk 80 to rotate. The first gear disk 80 and the first power gear 82 form a reduction gear structure, making the rotational speed of the first gear disk 80 lower than that of the drive gear 48. On the left side of the first gear disk 80 is an integrally formed first transmission gear 79, whose rotational speed is the same as that of the first gear disk 80. The first transmission gear 79 drives the second power gear 83 to rotate, and the second power gear 83 drives the second gear disk 46 to rotate. Similarly, at this time, the rotational speed of the second gear disk 46 is lower than that of the first transmission gear 79. On the left side of disk 46 is an integrally formed second transmission gear 78. The rotational speed of the second transmission gear 78 is the same as that of the second gear disk 46. The second transmission gear 78 drives the third power gear 43 to rotate, and the third power gear 43 drives the third gear disk 42 to rotate. Similarly, the rotational speed of the third gear disk 42 is lower than that of the second transmission gear 78. On the left side of the third gear disk 42 is an integrally formed transmission seat 77. The left end of the transmission seat 77 passes through the side wall of the third gearbox 40 and is sleeved in the middle of the filter screen frame 76. The rotational speed of the transmission seat 77 is the same as that of the third gear disk 42. The rotational speed of gear 77 is the same as that of filter frame 76. After multiple stages of reduction by various gears of different sizes, the rotational speed of the third gear disk 42 is reduced to a maximum extent lower than that of the drive shaft 70, thus achieving the purpose of reducing the speed of filter frame 76. This significantly reduces the rotational speed of filter frame 76 relative to the rotational speed of drive shaft 70, thereby reducing the rotational speed of filter screen 38. Consequently, the wear of brush head 56 per unit time is reduced, extending the service life of brush head 56, avoiding frequent replacement of brush head 56, saving time and effort, and reducing overall operating costs. A fourth sealing ring 37 is pressed between transmission seat 77 and third gearbox 40 to prevent sewage in drainage chamber 89 from entering multi-stage reduction structure 10. A third sealing ring 36 is pressed between transmission seat 77 and filter frame 76 to further prevent sewage from seeping into multi-stage reduction structure 10.

[0058] Preferably, the first driving component includes a first threaded rod 62, a first nut 61, a first south pole magnetic sleeve 60, a first north pole magnetic sleeve 58, and a first rotating shaft 71. The surface of the first threaded rod 62 has external threads. One end of the first threaded rod 62 is connected to the left end of the driving shaft 70, and the other end is connected to the first rotating shaft 71. The first nut 61 is threaded onto the first threaded rod 62. The first south pole magnetic sleeve 60 is fixedly sleeved onto the first nut 61. Both ends of the first threaded rod 62 are provided with first limiting rods 68. Both sides of the first nut 61 are provided with first baffles 59. The first north pole magnetic sleeve 58 is fixedly connected to the driving gear 48. The left end of the first rotating shaft 71 passes through the driving gear 48, the first transmission gear 79, the second transmission gear 78, the transmission seat 77, and the impeller 35 in sequence. The first rotating shaft 71 is rotatably connected to the driving gear 48, the first transmission gear 79, the second transmission gear 78, and the transmission seat 77, and is fixedly connected to the middle of the impeller 35.

[0059] In this solution, the working principle of the first driving component is as follows: When the filter screen 38 does not need cleaning, the impeller pump body 06 operates, and the drive shaft 70 of the DC motor 07 rotates in the forward direction, causing the first south pole magnetic sleeve 60 to disengage from the first north pole magnetic sleeve 58 until the first limiting rod 68 on the right side of the first threaded rod 62 contacts the corresponding first baffle 59. At this time, the first nut 61 rotates with the first threaded rod 62, and the first rotating shaft 71 rotates relative to the drive gear 48, but there is no transmission of rotational force. The multi-stage reduction structure 10 does not operate, and the filter screen frame 76 does not rotate. Currently, only... The system performs drainage operations. When the filter screen 38 needs cleaning, the drive shaft 70 reverses, transmitting rotational force to the first nut 61 via the first threaded rod 62. The first nut 61 drives the first south pole magnetic sleeve 60 to rotate synchronously. Under the action of the first limit rod 68 and the first baffle 59, the first south pole magnetic sleeve 60 drives the first north pole magnetic sleeve 58 to rotate. The first north pole magnetic sleeve 58 drives the drive gear 48 to rotate and provides power to the multi-stage reduction structure 10. Finally, the multi-stage reduction structure 10 drives the filter screen frame 76 to rotate, allowing the brush head 56 to clean the debris on the filter screen 38. This enables the filter screen 38 to have a regeneration function, eliminating the need for frequent disassembly of the impeller pump body 06 for cleaning the filter screen 38, saving time and effort. By switching the forward and reverse rotation of the DC motor 07, the working state of the multi-stage reduction structure 10 and the venting structure can be switched, avoiding idle consumption of both and effectively extending the service life of the multi-stage reduction structure 10 and the venting structure, reducing the power consumption of the washing device, and saving costs.

[0060] Preferably, the first gearbox 81, the second gearbox 44, and the third gearbox 40 are arranged side by side along the length of the first rotating shaft 71. The three gearboxes are disposed in the mounting sleeve 45, which is open on the left and closed on the right. The mounting sleeve 45 is locked in the housing 11. The drive gear 48 is rotatably connected to the right side wall of the mounting sleeve 45. Mounting cavities 51 are formed between the first gearbox 81 and the right side wall of the mounting sleeve 45, between the second gearbox 44 and the first gearbox 81, and between the third gearbox 40 and the second gearbox 44, respectively, for mounting the first gear disk 80 and the first power gear 82, the second gear disk 46 and the second power gear 83, and the third gear disk 42 and the third power gear 43. The right side wall of the mounting sleeve 45, the left side wall of the first gearbox 81, and the left side wall of the second gearbox 44 are all provided with connecting shafts 85 for rotatably mounting the first power gear 82, the second power gear 83, and the third power gear 43, respectively. All three connecting shafts 85 protrude toward the filter screen 38.

[0061] The first gear disk 80, the second gear disk 46, and the third gear disk 42 are all basin structures that open to the right. The teeth are all located on the circumferential inner sidewall of the basin structure. Two positioning gears 53 are symmetrically distributed on the bottom wall of the first gear disk 80, the second gear disk 46, and the third gear disk 42, located on both sides of the first rotating shaft 71. The positioning gears 53 mesh with their corresponding first gear disk 80, second gear disk 46, and third gear disk 42, respectively.

[0062] Specifically, three gearboxes are arranged side by side from left to right, and all three gears are simultaneously clamped in the mounting sleeve 45. The structure of the mounting sleeve 45 is adapted to the size of the housing 11. The left side of the mounting sleeve 45 is open, and the right side has a side wall. A sixth sealing ring 47 is provided between the right side wall and the inner wall of the housing 11. A fifth sealing ring 41 is pressed between the third gearbox 40 and the inner wall of the mounting sleeve 45. The right side of the first gearbox 81 and the side wall of the mounting sleeve 45 form a mounting cavity 51 for mounting the first power gear 82 and the first gear disk 80. The second gear is positioned to the right and interlocks with the left side of the first gearbox 81. The three gearboxes 40 and 44 form a mounting cavity 51 for mounting the second power gear 83 and the second gear disk 46. The right side of the third gearbox 40 and the left side of the second gearbox 44 form a mounting cavity 51 for mounting the third power gear 43 and the third gear disk 42. The three mounting cavities 51 are basically the same size. In order to facilitate the fixing of the three power gears, a connecting shaft 85 is provided on the left side of the side wall of the mounting sleeve 45, the left side of the first gearbox 81, and the left side of the second gearbox 44. The three connecting shafts 85 are located on the same straight line. The three power gears are respectively rotatably sleeved on the corresponding connecting shafts 85 so that the three power gears can rotate.

[0063] In this design, all three gear disks are shaped like a basin, arranged vertically side-by-side. Three power teeth are installed within this basin structure, and the teeth of the three gear disks are located on the circumferential sidewalls of the basin structure. To maintain the rotational stability of each gear disk, a positioning gear 53 is rotatably mounted on the bottom wall of the basin structure of each gear disk. The positioning gear 53 meshes with the teeth on the gear disk. Figure 8 and Figure 9 As shown, the positioning gears 53 are symmetrically distributed on both sides of the first rotating shaft 71.

[0064] Example 3

[0065] A washing device includes a washing shell 01 and a washing tank 04. The washing tank 04 is located inside the washing shell 01. The water outlet of the washing tank 04 is connected to the water inlet 12 of the pump head body 13 via a connecting pipe 05. The water outlet 14 of the pump head body 13 is connected to a drain pipe 02. The drain pipe 02 extends to the outside of the washing tank 04. An extension pipe 03 connected to a drain pipe 20 is provided inside the drain pipe 02.

[0066] In this embodiment, as in this embodiment, Figure 13As shown, taking a washing machine as an example, the wastewater discharged from the washing tank 04 inside the washing shell 01 is discharged through the connecting pipe 05 to the water inlet 12 on the impeller pump body 06, and then enters the drain chamber 89. The impeller pump body 06 works, and the drive shaft 70 of the DC motor 07 rotates in the forward direction, driving the first threaded rod 62 and the second threaded rod 69 to rotate synchronously, causing the first nut 61 and the second nut 64 to move closer together. The first south pole magnetic sleeve 60 disengages from the first north pole magnetic sleeve 58, and the second south pole magnetic sleeve 63 disengages from the second north pole magnetic sleeve 65, until the first limiting rod 68 on the right side of the first threaded rod 62 contacts the corresponding first baffle 59, and the second limiting rod 67 on the left side of the second threaded rod 69 contacts the corresponding second baffle 66. The first nut 61 and the second nut 64 rotate with the first threaded rod 62 and the second threaded rod 69, respectively. At this time, the second rotating shaft 33 rotates relative to the drive gear 22 but there is no transmission of rotational force. The venting structure is in a stopped state. At the same time, the multi-stage reduction structure 10 also stops working. The first rotating shaft 71 only drives the impeller 35 to pump water to the water outlet 14, thereby transporting the sewage that has entered the drain chamber 89 from the water outlet 14 to the drain pipe 02, from which it is discharged to the floor drain or other designated location. When the sewage in the drain chamber 89 is about to be drained, air will mix into the drain chamber 89. The impeller pump body 06 cannot pump the air out, which causes some of the sewage in the drain pipe 02 to fall back into the drain chamber 89. Inside, at this time, the drive shaft 70 of the DC motor 07 reverses, driving the first threaded rod 62 and the second threaded rod 69 to rotate synchronously, causing the first nut 61 and the second nut 64 to move away from each other until the first south pole magnetic sleeve 60 and the first north pole magnetic sleeve 58 are attracted, and the second south pole magnetic sleeve 63 and the second north pole magnetic sleeve 65 are attracted. The first limiting rod 68 on the left side of the first threaded rod 62 contacts the corresponding first baffle 59, and the second limiting rod 67 on the right side of the second threaded rod 69 contacts the corresponding second baffle 66. The first nut 61 and the second nut 64 rotate with the first threaded rod 62 and the second threaded rod 69 respectively. At this time, the rotational force is transmitted to the second nut 64 through the second threaded rod 69, and the second nut 64 drives the second south pole magnetic sleeve 65 to rotate. The magnetic sleeve 63 rotates synchronously. Under the action of the second limit rod 67 and the second baffle 66, the second south pole magnetic sleeve 63 drives the second north pole magnetic sleeve 65 to rotate. The second north pole magnetic sleeve 65 drives the drive gear 22 to rotate, and the drive gear 22 drives the driven gear 23 to rotate, inputting power to the venting structure. Through the reduction drive assembly, the pressure-sensitive diaphragm 25 inside the venting structure is driven to move, changing the volume of the pumping chamber 26. When the volume of the pumping chamber 26 increases, the residual sewage in the draining chamber 89 is sucked in. The residual sewage is sequentially sucked into the pumping chamber 26 through the filter screen 38, the filter water chamber 39, the water inlet channel 21, the water inlet chamber 72, and the water inlet hole (not shown in the figure) at the water inlet one-way valve 28. Then the volume of the pumping chamber 26 decreases.The inhaled wastewater is pumped into the drain pipe 20 after passing through the outlet hole (not shown in the figure) at the outlet one-way valve 87, the outlet chamber 73, the outlet flow channel 15, and the pipe plug 16. The drain pipe 20 can pass through the inside of the drain pipe 02 or be discharged to other designated places separately. In this way, even if air is mixed in the drain chamber 89, the drain structure can still operate and drain the residual wastewater in the drain chamber 89, avoiding the accumulation of wastewater in the drain chamber 89 and the generation of foul odors that affect the living environment. At the same time, the washing device will not be contaminated. The residual wastewater in the drain chamber 89 is drained by squeezing and pulling the pressure-sensitive diaphragm 25. Unlike the siphon principle, which requires consideration of the positional relationship between the drain pipe 20, the liquid level in the washing tank 04, and the drain pump body, the drain pipe 20 is more flexible in position. Simultaneously, the rotational force is transmitted to the first nut 61 via the first threaded rod 62. The first nut 61 drives the first south pole magnetic sleeve 60 to rotate synchronously. Under the action of the first limit rod 68 and the first baffle 59, the first south pole magnetic sleeve 60 drives the first north pole magnetic sleeve 58 to rotate. The first north pole magnetic sleeve 58 drives the drive gear 48 to rotate and provides power to the multi-stage reduction structure 10, thereby driving the filter screen frame 76 to rotate, allowing the brush head 56 to clean the debris on the filter screen 38. This enables the filter screen 38 to have a regeneration function, eliminating the need for frequent disassembly of the impeller pump body 06 for cleaning the filter screen 38, saving time and effort. By switching the forward and reverse rotation of the DC motor 07, the working state of the multi-stage reduction structure 10 and the venting structure can be switched, avoiding idle consumption of both and effectively extending the service life of the multi-stage reduction structure 10 and the venting structure, reducing the power consumption of the washing device, and saving costs.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A switchable working state impeller pump, comprising an impeller pump body (06), the impeller pump body (06) comprising a pump head body (13), the pump head body (13) having a drain chamber (89) and a filter water chamber (39) therein, the drain chamber (89) being connected to an inlet port (12) and an outlet port (14), the outlet port (14) having a drain pipe (20) therein, the drain pipe (20) being connected to a drain structure, and an impeller (35) therein, characterized in that, A DC motor (07) is provided between the pump head body (13) and the venting structure to provide power to the impeller (35) and the venting structure. One end of the drive shaft (70) of the DC motor (07) is provided with a first drive component connected to the impeller (35), and the other end is provided with a second drive component connected to the venting structure. The forward or reverse rotation of the drive shaft (70) controls the second drive component to switch the working state of the venting structure to start or stop transporting the residual sewage in the drainage chamber (89) to the venting pipe (20). The second driving component includes a second threaded rod (69), a second nut (64), a second south pole magnetic sleeve (63), a second north pole magnetic sleeve (65), and a second rotating shaft (33). The surface of the second threaded rod (69) has external threads. One end of the second threaded rod (69) is connected to the right end of the driving shaft (70), and the other end is connected to the second rotating shaft (33). The second nut (64) is threaded onto the second threaded rod (69). The second south pole magnetic sleeve (63) is fixedly sleeved onto the second nut (64). Both ends of the second threaded rod (69) are provided with second limiting rods (67). Both sides of the second nut (64) are provided with second baffles (66). The second north pole magnetic sleeve (65) is fixedly connected to the driving gear (22). The right end of the second rotating shaft (33) passes through the driving gear (22) and is rotatably connected to the driving gear (22).

2. The impeller pump with switchable operating states according to claim 1, characterized in that, The venting structure is located on the right side of the second drive component. The venting structure includes a reduction drive assembly, a pressure-sensitive diaphragm (25), a partition (27), and a housing. The housing is formed by connecting the pump housing (34) and the outer cover (08) with screws. The partition (27) is snapped between the pump housing (34) and the outer cover (08). The venting structure has an inlet chamber (72) and an outlet chamber (73) that are respectively connected to the drain chamber (89) and the venting pipe (20). The pressure-sensitive diaphragm (25) is circumferentially sealed and pressed between the partition (27) and the housing. 5) A pumping chamber (26) is formed between the partition (27) and the partition (27). The partition (27) is provided with an inlet hole and an outlet hole that are respectively connected to the inlet chamber (72) and the outlet chamber (73). An inlet one-way valve (28) fixed on the partition (27) is provided on one side of the inlet hole and covers the inlet hole. An outlet one-way valve (87) fixed on the partition (27) is provided on one side of the outlet hole and covers the outlet hole. The pressure-sensitive diaphragm (25) pumps the residual sewage in the drainage chamber (89) to the drain pipe (20) under the combined action of the deceleration drive assembly and the second drive component. It also includes a water channel plate (09) located at the lower end of the partition (27). The water channel plate (09) is fitted and snapped together by the bottom plate (17) and the top plate (18). A second sealing ring (29) is pressed between the partition (27) and the water channel plate (09). An inlet channel (21) and an outlet channel (15) are formed in the top plate (18). The inlet end (74) of the inlet channel (21) is connected to the filter water chamber (39), and the outlet end is connected to the inlet chamber (72). One end of the outlet channel (15) is connected to the outlet chamber (73), and the other end is connected to a pipe plug (16). The upper end of the pipe plug (16) is fitted inside the drain channel (86) of the drain pipe (20), and a first sealing ring (19) is embedded in the circumferential direction of the pipe plug (16).

3. The impeller pump with switchable operating states according to claim 2, characterized in that, The deceleration drive assembly includes a drive gear (22), a driven gear (23), a drive link (24), and an eccentric column (32). The drive gear (22) is connected to the second drive component. A first bearing (50) is provided on the drive shaft (70) to the left of the drive gear (22). The lower end of the drive gear (22) meshes with the driven gear (23). The driven gear (23) is rotatably connected to the positioning column (84) on the pump housing (34). The positioning column (84) extends towards the outer cover (08) and is eccentrically connected to the eccentric column (32). The left side of the eccentric column (32) is connected to the right side of the driven gear (23). A second bearing (31) is sleeved on the eccentric column (32). The outer ring of the second bearing (31) is sleeved with the drive link (24). The lower end of the drive link (24) is connected to the top of the pressure-sensing diaphragm (25). The locking screw (30) connects the pressure-sensing diaphragm (25) and the drive link (24) into one unit from bottom to top.

4. The impeller pump with switchable operating states according to claim 1, characterized in that, The pump head body (13) is also provided with a filter water chamber (39) that is connected to the drain chamber (89). A filter screen (38) is provided between the drain chamber (89) and the filter water chamber (39). A brush head (56) is provided on the side of the filter screen (38) and contacts the filter screen (38). The filter screen (38) is fixed on the filter screen frame (76). A sliding cavity (88) adapted to the brush head (56) is opened on the inner wall of the pump head body (13). The brush head (56) is slidably disposed in the sliding cavity (88). The brush head (56) is located on the side of the filter screen (38). A spring (54) is provided between the brush head (56) and the inner wall of the sliding cavity (88). 4) In the compressed state, the sliding cavity (88) side wall is provided with a limiting post (55) opposite to the brush head (56). A multi-stage reduction structure (10) provided with initial power by the first driving member is provided between the pump head body (13) and the DC motor (07). The multi-stage reduction structure (10) is composed of multiple transmission members connected to the first driving member in series. The multiple transmission members rotate relative to each other and transmit force step by step, and the speed decreases step by step in the direction of the filter screen (38). The transmission member at the end is connected to the filter screen frame (76). The drive shaft (70) rotates forward or reverse to control the first driving member to switch the working state of the multi-stage reduction structure (10) to start or stop rotating.

5. The impeller pump with switchable operating states according to claim 4, characterized in that, The multi-stage deceleration structure (10) includes a first-stage transmission component, a second-stage transmission component, and a third-stage transmission component arranged sequentially in the direction of the filter screen (38). The three transmission components are installed in the housing (11). The first driving component drives the first-stage transmission component to rotate, the first-stage transmission component drives the second-stage transmission component to rotate, the second-stage transmission component drives the third-stage transmission component to rotate, and the third-stage transmission component drives the filter screen frame (76) to rotate. The rotational speeds of the first-stage transmission component, the second-stage transmission component, and the third-stage transmission component decrease step by step.

6. The impeller pump with switchable operating states according to claim 5, characterized in that, The primary transmission component includes a first gearbox (81), a first gear disk (80), a first transmission gear (79), and a first power gear (82). The secondary transmission component includes a second gearbox (44), a second gear disk (46), a second transmission gear (78), and a second power gear (83). The tertiary transmission component includes a third gearbox (40), a third gear disk (42), a third power gear (43), and a transmission seat (77). The first transmission gear (79) is located on the left side of the first gear disk (80), the second transmission gear (78) is located on the left side of the second gear disk (46), and the transmission seat (77) is located on the left side of the first gear disk (80). On the left side of the third gear disk (42), the left end of the transmission seat (77) passes through the side wall of the third gearbox (40) and is connected to the middle of the filter frame (76). The transmission seat (77) is rotatably connected to the left side wall of the third gearbox (40). The lower end of the first power tooth (82) meshes with the drive gear (48), and the upper end meshes with the first gear disk (80). The first driving component provides power to the drive gear (48). The second power tooth (83) meshes with the first transmission tooth (79) and the second gear disk (46) at the same time. The third power tooth (43) meshes with the second transmission tooth (78) and the third gear disk (42) at the same time.

7. The impeller pump with switchable operating states according to claim 6, characterized in that, The first driving component includes a first threaded rod (62), a first nut (61), a first south pole magnetic sleeve (60), a first north pole magnetic sleeve (58), and a first rotating shaft (71). The surface of the first threaded rod (62) has external threads. One end of the first threaded rod (62) is connected to the left end of the driving shaft (70), and the other end is connected to the first rotating shaft (71). The first nut (61) is threaded onto the first threaded rod (62), and the first south pole magnetic sleeve (60) is fixedly sleeved onto the first nut (61). Both ends of the first threaded rod (62) are provided with... There is a first limiting rod (68), and the first nut (61) has a first baffle (59) on both sides. The first north magnetic sleeve (58) is fixedly connected to the drive gear (48). The left end of the first rotating shaft (71) passes through the drive gear (48), the first transmission gear (79), the second transmission gear (78), the transmission seat (77), and the impeller (35) in sequence. The first rotating shaft (71) is rotatably connected to the drive gear (48), the first transmission gear (79), the second transmission gear (78), and the transmission seat (77), and is fixedly connected to the middle of the impeller (35).

8. The impeller pump with switchable operating states according to claim 6, characterized in that, The first gearbox (81), the second gearbox (44), and the third gearbox (40) are arranged side by side along the length of the first rotating shaft (71). The three gearboxes are housed in a mounting sleeve (45). The mounting sleeve (45) is open on the left and closed on the right. The mounting sleeve (45) is fitted into the housing (11). The drive gear (48) is rotatably connected to the right side wall of the mounting sleeve (45). The first gearbox (81) is connected to the right side wall of the mounting sleeve (45), the second gearbox (44) is connected to the first gearbox (81), and the third gearbox (40) is connected to the right side wall of the mounting sleeve (45). 4) There are mounting cavities (51) for mounting the first gear disk (80) and the first power tooth (82), the second gear disk (46) and the second power tooth (83), and the third gear disk (42) and the third power tooth (43) respectively. The right side wall of the mounting sleeve (45), the left side wall of the first gear box (81), and the left side wall of the second gear box (44) are all provided with connecting shafts (85) for rotatably mounting the first power tooth (82), the second power tooth (83), and the third power tooth (43) respectively. All three connecting shafts (85) protrude towards the filter screen (38). The first gear disk (80), the second gear disk (46), and the third gear disk (42) are all basin structures that open to the right. The teeth are all located on the circumferential inner sidewall of the basin structure. Two positioning gears (53) are symmetrically distributed on the bottom wall of the first gear disk (80), the second gear disk (46), and the third gear disk (42) on both sides of the first rotating shaft (71). The positioning gears (53) mesh with their corresponding first gear disk (80), second gear disk (46), and third gear disk (42).

9. A washing apparatus comprising the impeller pump according to any one of claims 1-8, characterized in that, Includes a washing shell (01) and a washing tank (04). The washing tank (04) is located inside the washing shell (01). The water outlet of the washing tank (04) is connected to the water inlet (12) of the pump head body (13) through a connecting pipe (05). The water outlet (14) of the pump head body (13) is connected to a drain pipe (02). The drain pipe (02) extends to the outside of the washing tank (04). An extension pipe (03) connected to the drain pipe (20) is provided inside the drain pipe (02).

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