CN220487883U - Impeller pump capable of switching working state and washing device formed by impeller pump - Google Patents

Abstract

The utility model discloses an impeller pump capable of switching working states and a washing device formed by the impeller pump, which comprise an impeller pump body, wherein the impeller pump body comprises a pump head body, a water draining cavity and a filtering cavity are arranged in the pump head body, the water draining cavity is communicated with a water inlet port and a water outlet port, an emptying pipe is arranged in the water outlet port, the emptying pipe is communicated with an emptying structure, an impeller is arranged in the water draining cavity, a direct current motor for providing power for the impeller and the emptying structure is arranged between the pump head body and the emptying structure, one end of a driving shaft of the direct current motor is provided with a first driving piece connected with the impeller, the other end of the driving shaft is provided with a second driving piece connected with the emptying structure, and the driving shaft is controlled to forward or backward rotate so as to switch the emptying structure to start or stop conveying residual sewage in the water draining cavity to the working state of the emptying pipe. The utility model can switch the working state of the emptying structure on the impeller pump body, avoid the emptying of the emptying structure, prolong the service life of the emptying structure and reduce the energy consumption of the impeller pump.

Description

Impeller pump capable of switching working state and washing device formed by impeller pump

Technical Field

The utility model relates to the technical field of fluid conveying equipment, in particular to a vane pump capable of switching working states and a washing device formed by the vane pump.

Background

The types of washing apparatuses are various, such as washing machines, dish washers, etc. Taking a washing machine as an example, the washing machine mainly uses an internal washing box to wash, dewater and the like clothes, and generated wastewater is directly pumped to a drain pipe by a drainage pump (impeller pump) and then is conveyed to a floor drain or other corresponding places, when the water in the washing box is about to be exhausted, air is mixed into the drainage pump, and the drainage pump cannot pump the air, so that the drainage pump cannot exhaust the wastewater, and therefore partial wastewater is easy to flow back to the drainage pump to be deposited. Therefore, the improvement is made in the prior art, the evacuation structure is additionally arranged on the impeller pump, residual sewage is sucked and discharged from the evacuation pipe in a diaphragm pump mode, meanwhile, the filter screen is additionally arranged on the output shaft of the motor and used for filtering mixed impurities in the sewage, the impurities are prevented from entering the evacuation structure, the brush head is arranged on the side face of the filter screen and used for contacting and washing the impurities on the filter screen, in the prior art, the evacuation structure is driven by the alternating current motor, drainage and evacuation of the residual sewage are simultaneously carried out, so that when the evacuation is not needed, the evacuation structure is also driven by the motor to consume air, the service life of the evacuation structure is shortened easily, the energy consumption of the impeller pump is increased, and the use cost of the washing device is increased.

Disclosure of Invention

The utility model aims to provide a vane pump with a switchable working state and a washing device formed by the vane pump, which can switch the working state of an emptying structure on a vane pump body through the positive and negative rotation of a direct current motor according to actual requirements, avoid the emptying structure from consuming empty, prolong the service life of the emptying structure, reduce the vane pump energy consumption and simultaneously reduce the use cost of the washing device.

In order to solve the technical problems, the utility model adopts the following scheme:

the utility model provides a switchable working condition's impeller pump, includes the impeller pump body, the impeller pump body includes the pump head body, is equipped with drainage chamber, filtration water cavity in the pump head body, drainage chamber and inlet connection, outlet connection switch-on, are equipped with the evacuation pipe in the outlet connection, and the evacuation pipe intercommunication has the evacuation structure, is equipped with the impeller in the drainage chamber, be equipped with the direct current motor that is used for providing power for impeller and evacuation structure between the pump head body and the evacuation structure, direct current motor's drive shaft one end is equipped with the first driving piece that is connected with the impeller, and the other end is equipped with the second driving piece that is connected with the evacuation structure, and drive shaft corotation or reversal control second driving piece switches the evacuation structure and begins or stops carrying the working condition of evacuation intracavity residual sewage to the evacuation pipe.

By adopting the technical scheme, the alternating current motor in the impeller pump body is replaced by the direct current motor, when a large amount of water is only required to be drained from the water drainage cavity, the driving shaft of the direct current motor drives the first driving piece to directly drive the impeller to rotate, so that the sewage in the water drainage cavity is pumped to the water drainage interface, and meanwhile, the driving shaft drives the second driving piece to switch the emptying structure to a state of stopping operation, namely, the emptying structure does not act when the impeller pumps water and is in a temporary state; when the water in the drainage cavity is basically discharged, and the residual sewage is required to be discharged, the driving shaft drives the second driving piece to switch the emptying structure from a stop state to a working state, namely, the emptying structure starts to act, the residual sewage in the drainage cavity is conveyed to the emptying pipe and discharged, and the phenomenon that the sewage is accumulated and malodorous is avoided.

Further, the emptying structure is arranged on the right side of the second driving piece and comprises a speed reduction driving assembly, a pressure sensing diaphragm, a partition plate and a shell, the shell is formed by connecting a pump shell and an outer cover through screws, the partition plate is clamped between the pump shell and the outer cover, a water inlet cavity and a water outlet cavity which are respectively communicated with the water discharging cavity and the emptying pipe are arranged in the emptying structure, the pressure sensing diaphragm is circumferentially sealed and tightly pressed between the partition plate and the shell, a water pumping cavity is formed between the pressure sensing diaphragm and the partition plate, a water inlet hole and a water outlet hole which are respectively communicated with the water inlet cavity and the water outlet cavity are arranged on the partition plate, a water inlet one-way valve clack which is fixed on the partition plate and covers the water inlet hole is arranged on one side of the water inlet hole, a water outlet one-way valve clack which is fixed on the partition plate and covers the water outlet hole is arranged on one side of the partition plate, and the pressure sensing diaphragm pumps residual sewage in the water discharging cavity to the emptying pipe under the combined action of the speed reduction driving assembly and the second driving piece;

still including the water route board that is located the baffle lower extreme, the water route board is by bottom plate and the mutual adaptation joint of roof, compresses tightly between baffle and the water route board has the second sealing washer, be formed with inlet channel, play water runner in the roof, inlet end and the filtration water cavity switch-on of inlet channel, play water end and inlet cavity switch-on, play water runner one end and play water cavity switch-on, the other end intercommunication has the pipe stopper, in the evacuation runner of evacuation pipe is located to the pipe stopper upper end cover, pipe stopper circumference embedding has first sealing washer.

Further, the speed reduction driving assembly comprises a driving gear, a driven gear, a driving connecting rod and an eccentric column, wherein the driving gear is connected with the second driving part, a first bearing is arranged on the left side of the driving shaft, the lower end of the driving gear is meshed with the driven gear, the driven gear is rotationally connected with a positioning column on the pump shell, the positioning column extends towards the direction of an outer cover and is eccentrically connected with the eccentric column, the left side of the eccentric column is connected with 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 driving connecting rod, the lower end of the driving connecting rod is connected with the top of the pressure sensing diaphragm, and a locking screw is used for connecting the pressure sensing diaphragm and the driving connecting rod into a whole from bottom to top.

Further, the second driving piece includes second threaded rod, second nut, second antarctic magnetic sleeve, second north pole magnetic sleeve, second pivot, and second threaded rod surface has the external screw thread, and second threaded rod one end is connected with the drive shaft right-hand member, and the other end is connected with the second pivot, and second nut threaded connection is on the second threaded rod, and second antarctic magnetic sleeve is fixed cup joints on the second nut, and second threaded rod both ends all are equipped with the second gag lever post, and second nut both sides face all is equipped with the second baffle, and second north pole magnetic sleeve fixed connection is on the driving gear, and the second pivot right-hand member runs through the driving gear and rotates with the driving gear and be connected.

Further, still be equipped with the filtration water cavity that is linked together with the drainage chamber in the pump head body, be equipped with the filter screen between drainage chamber and the filtration water cavity, the filter screen side is equipped with the brush head that contacts with the filter screen, the filter screen is fixed in on the filter screen frame, set up the slip chamber with the brush head adaptation on the pump head body inner wall, the brush head slides and locates in the slip chamber, the brush head is located the filter screen side, be equipped with the spring between brush head and the slip intracavity wall, the spring is in compressed state, the slip chamber lateral wall is equipped with the spacing post relative with the brush head, be equipped with between pump head body and the direct current motor and provide the multistage speed reduction structure of initial power by first driving piece, multistage speed reduction structure comprises a plurality of driving pieces that are connected in series each other with first driving piece, a plurality of driving pieces relative rotations just pass power step by step and reduce towards filter screen direction rotational speed step by step, terminal driving piece and filter screen frame are connected, the driving shaft corotation or reversal control first driving piece switches multistage speed reduction structure and begins or stops the operating condition of rotation.

By adopting the technical scheme, the multistage speed reduction structure with initial power provided by the first driving part is arranged between the pump head body and the direct current motor, the multistage speed reduction structure is formed by connecting a plurality of driving parts in series, the tail end driving part is connected with the filter screen frame and drives the filter screen frame to rotate, the plurality of driving parts sequentially transmit steering moment step by step, the plurality of driving parts rotate relative to the first driving part, the first driving part provides initial force for the driving part at the head end, the rotating speed of the plurality of driving parts gradually decreases towards the direction of the filter screen, and the rotating speed of the tail end driving part is the lowest, so that the rotating speed of the filter screen frame is greatly reduced relative to the rotating speed of the first driving part, the rotating speed of the filter screen is correspondingly reduced, the abrasion degree of the brush head in unit time is reduced, the service life of the brush head is prolonged, frequent replacement of the brush head is avoided, time and labor are saved, and the use cost of the impeller pump body is reduced.

Further, multistage speed reduction structure includes the one-level driving medium, second grade driving medium, the tertiary driving medium that distribute in proper order towards the filter screen direction, and three driving medium installs in the casing, and first driving medium drive one-level driving medium rotates, and one-level driving medium drives second grade driving medium and rotates, and second grade driving medium drives tertiary driving medium and rotates, and tertiary driving medium drives the filter screen frame and rotates, and the rotational speed of one-level driving medium, second grade driving medium, tertiary driving medium reduces step by step.

Further, the first-stage driving piece includes first gear box, first gear disk, first drive tooth, first power tooth, the second-stage driving piece includes the second gear box, the second gear disk, the second drive tooth, the second power tooth, tertiary driving piece includes the third gear box, the third gear disk, third power tooth, the transmission seat, first gear disk left surface is located to first drive tooth, second gear disk left surface is located to second drive tooth, the transmission seat is located third gear disk left surface, the transmission seat left end passes third gear box lateral wall and is connected with filter screen frame middle part, the transmission seat rotates with third gear box left wall and is connected, first power tooth lower extreme meshing has drive gear, the upper end meshes with first gear disk, first driving piece provides power for drive gear, the second power tooth meshes with first drive tooth, the second gear disk simultaneously, the third power tooth meshes with second drive tooth, the third gear disk simultaneously.

Further, first driving piece includes first threaded rod, first nut, first antarctic magnetic sleeve, first arctic magnetic sleeve, first pivot, first threaded rod surface has the external screw thread, first threaded rod one end is connected with the drive shaft left end, the other end is connected with first pivot, first nut threaded connection is on first threaded rod, first antarctic magnetic sleeve is fixed cup joint on first nut, first threaded rod both ends all are equipped with first gag lever post, first nut both sides face all is equipped with first baffle, first arctic magnetic sleeve fixed joint is on drive gear, first pivot left end runs through drive gear in proper order, first drive tooth, the second drive tooth, the transmission seat, the impeller, first pivot and drive gear, first drive tooth, the second drive tooth, the transmission seat rotates to be connected, with impeller middle part fixed connection.

Further, the first gear box, the second gear box and the third gear box are distributed side by side along the length direction of the first rotating shaft, the three gear boxes are arranged in the mounting sleeve, the left side of the mounting sleeve is opened, the right side of the mounting sleeve is closed, the mounting sleeve is clamped in the shell, the driving gear is rotationally connected with the right side wall of the mounting sleeve, mounting cavities for mounting the first gear disc and the first power gear, the second gear disc and the second power gear and the third gear disc and the third power gear are respectively formed between the first gear box and the right side wall of the mounting sleeve, between the second gear box and the first gear box and between the third gear box and the second gear box, and the right side wall of the mounting sleeve, the left side wall of the first gear box and the left side wall of the second gear box are respectively provided with connecting shafts for rotationally mounting the first power gear, the second power gear and the third power gear, and the three connecting shafts are respectively protruded towards the direction of the filter screen;

The first gear disc, the second gear disc and the third gear disc are all right side open-ended pelvic structures, the teeth are all arranged on the circumferential inner side wall of the pelvic structures, two positioning gears positioned on two sides of the first rotating shaft are symmetrically distributed on the bottom walls of the first gear disc, the second gear disc and the third gear disc, and the positioning gears are meshed with the corresponding first gear disc, the second gear disc and the third gear disc respectively.

The washing device comprises a washing shell and a washing box, wherein the washing box is positioned in the washing shell, the water outlet position of the washing box is connected with a water inlet interface of a pump head body through a connecting pipe, the water outlet interface of the pump head body is connected with a drain pipe, the drain pipe extends to the outside of the washing box, and an extension pipe connected with an emptying pipe is arranged in the drain pipe.

The utility model has the beneficial effects that:

1. the alternating current motor in the impeller pump body is replaced by a direct current motor, when a large amount of water is only required to be drained from the drainage cavity, the driving shaft of the direct current motor drives the first driving piece to directly drive the impeller to rotate, so that the sewage pump in the drainage cavity is further led to the drainage interface, and meanwhile, the driving shaft drives the second driving piece to switch the emptying structure to a state of stopping operation, namely, the emptying structure does not act when the impeller pump pumps water and is in a temporary state; when the water in the drainage cavity is basically discharged, and the residual sewage is required to be discharged, the driving shaft drives the second driving piece to switch the emptying structure from a stop state to a working state, namely, the emptying structure starts to act, the residual sewage in the drainage cavity is conveyed to the emptying pipe and discharged, and the phenomenon that the sewage is accumulated and malodorous is avoided.

2. The multistage speed reducing structure with initial power provided by the first driving part is arranged between the pump head body and the direct current motor, the multistage speed reducing structure is formed by connecting a plurality of driving parts in series, the tail end driving part is connected with the filter screen frame and drives the filter screen frame to rotate, steering torque is sequentially transmitted step by step between the plurality of driving parts, the plurality of driving parts rotate relative to the first driving part, the first driving part provides initial force for the driving part at the head end, the rotating speed of the plurality of driving parts is gradually reduced towards the direction of the filter screen, and the rotating speed of the tail end driving part is the lowest, so that the rotating speed of the filter screen frame is greatly reduced relative to the rotating speed of the first driving part, the rotating speed of the filter screen is correspondingly reduced, the abrasion degree of the brush head in unit time is reduced, the service life of the brush head is prolonged, frequent replacement of the brush head is avoided, time and labor are saved, and the use cost of the impeller pump body is reduced.

3. In the prior art, the evacuation structure directly drives the eccentric assembly action through the rotation force of output shaft, leads to the pressure sensing diaphragm to open and close very fast, and this scheme is through setting up the driving gear, drive driven gear through the driving gear and rotate, driven gear's rim plate diameter is greater than driving gear's rim plate diameter, can reduce driven gear's rotational speed like this, play the effect of slowing down, and driven gear rotates and drives the drive connecting rod seat and reciprocate, be connected with the pressure sensing diaphragm through the drive connecting rod, driven gear's rotation drive pressure sensing diaphragm opens and closes one by one, driven gear's rotational speed has reduced, make the frequency that pressure sensing diaphragm opens and closes reduced, pressure sensing diaphragm's life has been prolonged.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic side view of the present utility model;

FIG. 3 is a schematic rear view of the present utility model;

FIG. 4 is a section E-E of FIG. 3;

FIG. 5 is a section view H-H of FIG. 3;

FIG. 6 is a cross-sectional view of F-F in FIG. 3;

FIG. 7 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7;

FIG. 9 is a section view D-D of FIG. 7;

FIG. 10 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 11 is a section view of the graph G-G of FIG. 7;

FIG. 12 is a block diagram of the multi-stage retarding and purging arrangements when switched to an inactive state;

fig. 13 is a structural view of the washing apparatus.

Reference numerals: 01-washing shell, 02-drain pipe, 03-extension pipe, 04-washing box, 05-connection pipe, 06-impeller pump body, 07-DC motor, 08-outer cover, 09-waterway plate, 10-multi-stage speed reducing structure, 11-shell, 12-water inlet interface, 13-pump head, 14-water outlet interface, 15-water outlet flow channel, 16-pipe plug, 17-bottom plate, 18-top plate, 19-first sealing ring, 20-evacuation pipe, 21-water inlet flow channel, 22-driving gear, 23-driven gear, 24-driving connecting rod, 25-pressure sensing diaphragm, 26-pump water cavity, 27-partition plate, 28-water inlet one-way valve clack, 29-second sealing ring, 30-locking screw, 31-second bearing, 32-eccentric column, 33-second rotating shaft, 34-pump housing, 35-impeller, 36-third sealing ring, 37-fourth sealing ring, 38-filter screen, 39-filter water chamber, 40-third gear box, 41-fifth sealing ring, 42-third gear disk, 43-third power tooth, 44-second gear box, 45-mounting sleeve, 46-second gear disk, 47-sixth sealing ring, 48-driving gear, 49-magnetic ring, 50-first bearing, 51-mounting cavity, 52-seventh sealing ring, 53-positioning gear, 54-spring, 55-limit post, 56-brush head, 57-driving 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 limit rod, 68-first limit rod, 69-second threaded rod, 70-drive shaft, 71-first spindle, 72-water inlet cavity, 73-water outlet cavity, 74-water inlet end, 75-motor stator, 76-filter screen frame, 77-transmission seat, 78-second transmission tooth, 79-first transmission tooth, 80-first gear disk, 81-first gear box, 82-first power tooth, 83-second power tooth, 84-positioning column, 85-connecting shaft, 86-evacuation flow channel, 87-water outlet unidirectional valve clack, 88-sliding cavity, 89-water draining cavity.

Detailed Description

The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be construed as limiting the present utility model.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "configured," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

The utility model provides a switchable operating condition's impeller pump, includes impeller pump body 06, impeller pump body 06 includes pump head body 13, is equipped with drainage chamber 89, filtration water cavity 39 in the pump head body 13, drainage chamber 89 and inlet 12, outlet 14 switch-on, are equipped with evacuation pipe 20 in the outlet 14, and evacuation pipe 20 communicates there is the evacuation structure, is equipped with impeller 35 in the drainage chamber 89, be equipped with the direct current motor 07 that is used for providing power for impeller 35 and evacuation structure between pump head body 13 and the evacuation structure, the drive shaft 70 one end of direct current motor 07 is equipped with the first driving piece that is connected with impeller 35, and the other end is equipped with the second driving piece that is connected with the evacuation structure, and drive shaft 70 corotation or reversal control second driving piece switches the operating condition that evacuation structure begins or stops carrying the residual sewage in the drainage chamber 89 to evacuation pipe 20.

In this embodiment, as shown in fig. 7, 10 and 12, the ac motor in the impeller pump body 06 is replaced by the dc motor 07, when a large amount of water is only required to be drained from the drainage cavity 89, the driving shaft 70 of the dc motor 07 drives the first driving member to directly drive the impeller 35 to rotate, so as to pump the sewage in the drainage cavity 89 to the drainage interface, and meanwhile, the driving shaft 70 drives the second driving member to switch the emptying structure to a state of stopping the operation, i.e. the emptying structure will not act when the impeller 35 pumps water, and is in a temporary state; when the residual sewage is basically discharged in the drainage cavity 89, the driving shaft 70 drives the second driving member to switch the emptying structure from the stop state to the working state, namely, the emptying structure starts to act, the residual sewage in the drainage cavity 89 is conveyed to the emptying pipe 20 and is discharged, and the sewage is prevented from accumulating and generating malodor.

Meanwhile, a sliding cavity 88 adapted to the brush head 56 is formed on the inner wall of the pump head body 13, the brush head 56 (generally hard graphite sheet) is slidably arranged in the sliding cavity 88, the brush head 56 is positioned on the side face of the impeller 35, a spring 54 is arranged between the brush head 56 and the inner wall of the sliding cavity 88, the spring 54 is in a compressed state, and a limit post 55 opposite to the brush head 56 is arranged on the side wall of the sliding cavity 88. Specifically, as shown in fig. 10 and 11, after the brush head 56 is worn to a certain extent, the brush head 56 can automatically move to one side of the filter screen 38 through the extension and retraction of the spring 54, so that the brush head 56 can contact with the filter screen 38 and clean sundries on the surface of the filter screen 38, and the limit post 55 can effectively limit the movement range of the brush head 56 to the left side.

Preferably, as shown in fig. 1-4, the emptying structure is disposed on the right side of the second driving member, the emptying structure includes a speed reducing driving assembly, a pressure sensing diaphragm 25, a partition plate 27, and a casing, the casing is formed by connecting a pump casing 34 and an outer cover 08 by screws, the partition plate 27 is clamped between the pump casing 34 and the outer cover 08, a water inlet cavity 72 and a water outlet cavity 73 which are respectively communicated with a water discharge cavity 89 and an emptying pipe 20 are disposed in the emptying structure, the pressure sensing diaphragm 25 is tightly pressed between the partition plate 27 and the casing in a circumferential direction, a water pumping cavity 26 is formed between the pressure sensing diaphragm 25 and the partition plate 27, a water inlet hole and a water outlet hole which are respectively communicated with the water inlet cavity 72 and the water outlet cavity 73 are disposed on the partition plate 27, a water inlet unidirectional valve flap 28 fixed on the partition plate 27 is disposed on one side of the water inlet hole and covers the water inlet hole, and a water outlet unidirectional valve flap 87 fixed on the partition plate 27 is disposed on one side of the water outlet hole and the pressure sensing diaphragm 25 pumps residual sewage in the water discharge cavity 89 to the emptying pipe 20 under the combined action of the speed reducing driving assembly and the second driving member;

As shown in fig. 5, the water channel plate 09 is further included at the lower end of the partition plate 27, the water channel plate 09 is clamped by the bottom plate 17 and the top plate 18 in a mutually adapting manner, a second sealing ring 29 is pressed between the partition plate 27 and the water channel plate 09, a water inlet flow channel 21 and a water outlet flow channel 15 are formed in the top plate 18, a water inlet end 74 of the water inlet flow channel 21 is communicated with the filtering water cavity 39, a seventh sealing ring 52 is arranged at the outer side of the water inlet end 74, the water outlet end is communicated with the water inlet cavity 72, one end of the water outlet flow channel 15 is communicated with the water outlet cavity 73, the other end of the water outlet flow channel 15 is communicated with a pipe plug 16, the upper end of the pipe plug 16 is sleeved in an emptying flow channel 86 of the emptying pipe 20, and the first sealing ring 19 is circumferentially embedded in the pipe plug 16. The plug 16 is used to communicate the outlet flow passage 15 with the evacuation pipe 20.

Preferably, the speed reduction driving assembly comprises a driving gear 22, a driven gear 23, a driving connecting rod 24 and an eccentric column 32, the driving gear 22 is connected with a second driving part, a first bearing 50 is arranged on the driving shaft 70 and positioned on the left side of the driving gear 22, the lower end of the driving gear 22 is meshed with the driven gear 23, the driven gear 23 is rotatably connected with a positioning column 84 on a pump shell 34, the positioning column 84 extends towards the outer cover 08 direction and is eccentrically connected with the eccentric column 32, the left side of the eccentric column 32 is connected with 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 driving connecting rod 24, the lower end of the driving connecting rod 24 is connected with the top of a pressure sensing diaphragm 25, and a locking screw 30 connects the pressure sensing diaphragm 25 and the driving connecting rod 24 into a whole from bottom to top.

As shown in fig. 4, the first sealing ring 19 can seal the installation gap between the pipe plug 16 and the emptying pipe 20 to avoid water leakage, the second sealing ring 29 can improve the sealing performance between the waterway plate 09 and the casing to avoid water leakage, when the volume of the pumping water cavity 26 in the emptying structure is increased, the water in the drainage water cavity 89 is sucked into the filtering water cavity 39, impurities are filtered out through the filter screen 38, then the impurities enter the water inlet cavity 72 through the water inlet channel 21 on the waterway plate 09, then enter the pumping water cavity 26 through the water inlet hole (not shown in the figure) at the water inlet one-way valve flap 28, then the volume of the pumping water cavity 26 is reduced, sewage in the pumping water cavity 26 is pumped into the water outlet cavity 73 through the water outlet one-way valve flap 87 and the water outlet hole (not shown in the figure), then enters the emptying pipe 20 through the water outlet channel 15, and is conveyed to an external designated position through the emptying water channel 86 of the emptying pipe 20 to finish the drainage of residual sewage in the drainage water cavity 89, and the sewage deposition is avoided to emit odor to pollute the environment.

When the emptying structure works, as shown in fig. 6, the driving shaft 70 drives the second driving piece to drive the driving gear 22 to rotate, the driving gear 22 drives the driven gear 23 to rotate, the number of teeth of the driving gear 22 is smaller than that of teeth of the driven gear 23, a speed reduction principle is formed, the rotating speed of the driven gear 23 is lower than that of the driving shaft 70, the driven gear 23 drives the eccentric post 32 to eccentrically rotate, the driving connecting rod 24 is further driven to move up and down, the driving connecting rod 24 is connected with the pressure sensing diaphragm 25, the driving connecting rod 24 moves up and down to pull the pressure sensing diaphragm 25, a one-to-one movement state is formed, the volume of the pump water cavity 26 is changed, the pressure sensing diaphragm 25 is driven to move one-to-one by the rotation of the driven gear 23, compared with the prior art, the rotating speed of the driven gear 23 is reduced, the frequency of the opening and closing of the pressure sensing diaphragm 25 is reduced, and the service life of the pressure sensing diaphragm 25 is prolonged.

Preferably, the second driving member 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, where the surface of the second threaded rod 69 has an external thread, one end of the second threaded rod 69 is connected with the right end of the driving shaft 70, the other end is connected with the second rotating shaft 33, the second nut 64 is screwed onto the second threaded rod 69, the second south pole magnetic sleeve 63 is fixedly sleeved onto the second nut 64, two ends of the second threaded rod 69 are both provided with second limit rods 67, two sides of the second nut 64 are both provided with second baffles 66, the second north pole magnetic sleeve 65 is fixedly connected onto the driving gear 22, and the right end of the second rotating shaft 33 penetrates through the driving gear 22 and is rotationally connected with the driving gear 22.

In this scheme, the theory of operation of second driving piece: the existing design of the direct current motor 07 is that a magnetic ring 49 is sleeved outside a driving shaft 70 of the direct current motor 07, a motor stator 75 is arranged outside the magnetic ring 49, a vane pump body 06 works, the driving shaft 70 of the direct current motor 07 rotates positively to drive a second threaded rod 69 to rotate synchronously, a second nut 64 moves towards the magnetic ring 49 side, a second south pole magnetic sleeve 63 is separated from a second north pole magnetic sleeve 65 until a second limit rod 67 on the left side of the second threaded rod 69 contacts with a corresponding second baffle 66, at the moment, the second nut 64 rotates along with the second threaded rod 69, the second rotating shaft 33 rotates relatively with a driving gear 22 but no rotation force is transmitted, an emptying structure is in a stop state, and only drainage work can be performed currently; when the sewage in the drainage cavity 89 is about to be drained, air is mixed into the drainage cavity 89, and the impeller pump body 06 cannot pump the air, so that the sewage in the drainage pipe 02 falls back into the drainage cavity 89, at the moment, the driving shaft 70 of the direct current motor 07 rotates reversely to drive the second threaded rod 69 to rotate synchronously, the second nut 64 moves to the side far away from the magnetic ring 49 until the second south pole magnetic sleeve 63 is adsorbed by the second north pole magnetic sleeve 65, the second limit rod 67 on the right side of the second threaded rod 69 contacts with the corresponding second baffle 66, at the moment, the second nut 64 rotates along with the second threaded rod 69, at the moment, the rotating 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, the second south pole magnetic sleeve 65 rotates under the action of the second limit rod 67 and the second baffle 66, the driving gear 22 drives the driven gear 23 to rotate, the emptying structure is powered by the driving gear 23, the emptying structure can start to realize emptying operation, and the positive and negative pole magnetic sleeve 70 rotates, so that the emptying structure is switched between the working state and the emptying structure is avoided, and the emptying structure is effectively lost.

Example 2

Preferably, a filtering water cavity 39 communicated with a water drainage cavity 89 is further arranged in the pump head body 13, a filtering net 38 is arranged between the water drainage cavity 89 and the filtering water cavity 39, a brush head 56 contacted with the filtering net 38 is arranged on the side surface of the filtering net 38, the filtering net 38 is fixed on the filtering net frame 76, a sliding cavity 88 matched with the brush head 56 is arranged on the inner wall of the pump head body 13, the brush head 56 is slidingly arranged in the sliding cavity 88, the brush head 56 is positioned on the side surface of the filtering net 38, a spring 54 is arranged between the brush head 56 and the inner wall of the sliding cavity 88, the spring 54 is in a compressed state, a limit post 55 opposite to the brush head 56 is arranged on the side wall of the sliding cavity 88, a multistage speed reducing structure 10 provided with initial power by a first driving piece is arranged between the pump head body 13 and the direct current motor 07, the multistage speed reducing structure 10 is formed by connecting a plurality of driving pieces in series with each other, the driving pieces relatively rotate and gradually transfer force towards the direction of the filtering net 38, the tail end driving pieces are connected with the filtering net frame 76, and the driving shaft 70 is positively rotated or reversely to control the first driving pieces to switch the multistage speed reducing structure 10 to start or stop rotating.

In this embodiment, a multi-stage reduction structure 10 with initial power provided by a first driving member is arranged between the pump head body 13 and the dc motor 07, the multi-stage reduction structure 10 is formed by connecting a plurality of driving members in series, the driving member at the tail end is connected with the filter screen frame 76 and drives the filter screen frame 76 to rotate, the plurality of driving members sequentially transmit steering torque step by step, so that the plurality of driving members rotate relative to the first driving member, the first driving member provides initial force for the driving member at the head end, the rotation speed of the plurality of driving members gradually decreases towards the direction of the filter screen 38, and the rotation speed of the driving member at the tail end is the lowest, so that the rotation speed of the filter screen frame 76 is greatly reduced relative to the rotation speed of the first driving member, and therefore, the rotation speed of the filter screen 38 is correspondingly reduced, so that the abrasion degree of the brush head 56 in unit time is reduced, the service life of the brush head 56 is prolonged, frequent replacement of the brush head 56 is avoided, time and labor are saved, and the use cost of the impeller pump body 06 is reduced.

Preferably, the multi-stage reduction structure 10 includes a first stage transmission member, a second stage transmission member, and a third stage transmission member sequentially distributed toward the direction of the filter screen 38, where the three transmission members are installed in the housing 11, the first driving member drives the first stage transmission member to rotate, the first stage transmission member drives the second stage transmission member to rotate, the second stage transmission member drives the third stage transmission member to rotate, and the third stage transmission member drives the filter screen frame 76 to rotate, where the rotational speeds of the first stage transmission member, the second stage transmission member, and the third stage transmission member are gradually reduced.

Specifically, the multistage reduction structure 10 has three-stage reduction, including the one-stage transmission spare that establishes ties towards filter screen 38 direction, the two-stage transmission spare, three transmission spare installs casing 11 in proper order, casing 11 and pump head body 13 integrated into one piece, be located between direct current motor 07 and pump head body 13, drive shaft 70 drive first driving piece action, first driving piece drive one-stage transmission spare rotates, the one-stage transmission spare transmits the rotation force for the two-stage transmission spare, the rotational speed of two-stage transmission spare is less than the rotational speed of one-stage transmission spare, the two-stage transmission spare transmits the rotation force for the three-stage transmission spare, the rotational speed of three-stage transmission spare is less than the rotational speed of two-stage transmission spare, three-stage transmission spare is connected with filter screen frame 76, three-stage transmission spare drives filter screen frame 76 and rotates at a slow speed, so that the rotational speed of filter screen frame 76 is compared with the rotational speed of drive shaft 70, therefore the rotational speed of filter screen 38 also corresponding reduction, thereby the wear degree in the unit time of brush head 56 has been prolonged, the brush head 56 life is avoided, labour saving and time saving, and use cost of whole is reduced.

Preferably, the primary transmission member comprises a first gear box 81, a first gear disc 80, a first transmission gear 79 and a first power gear 82, the secondary transmission member comprises a second gear box 44, a second gear disc 46, a second transmission gear 78 and a second power gear 83, the tertiary transmission member comprises a third gear box 40, a third gear disc 42, a third power gear 43 and a transmission seat 77, the first transmission gear 79 is arranged on the left side surface of the first gear disc 80, the second transmission gear 78 is arranged on the left side surface of the second gear disc 46, the transmission seat 77 is arranged on the left side surface of the third gear disc 42, the left end of the transmission seat 77 penetrates through the side wall of the third gear box 40 and is connected with the middle part of the filter screen frame 76, the transmission seat 77 is in rotary connection with the left side wall of the third gear box 40, the lower end of the first power gear 82 is meshed with the driving gear 48, the upper end of the first power gear disc 80 is meshed with the first power gear, the first transmission member provides power for the driving gear 48, the second power gear 83 is simultaneously meshed with the first transmission gear disc 79 and the second gear disc 46, and the first power gear 43 is simultaneously meshed with the second transmission gear disc 78 and the third gear disc 42.

Specifically, as shown in fig. 7-9, the driving gear 48 is a pinion, the first driving gear 79 and the second driving gear 78 are also pinions, the first power gear 82, the second power gear 83 and the third power gear 43 belong to a large gear, the number of teeth is larger than that of the driving gear, the first driving gear 79 and the second driving gear 78, the first gear disk 80, the second gear disk 46 and the third gear disk 42 are also large gears, the number of teeth is the largest in the multi-stage reduction structure 10, therefore, the rotating speed of the driving gear is the slowest, the first driving member rotates to drive the driving gear 48 to rotate, the driving gear 48 rotates to drive the first power gear 82 to rotate, 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, so that the rotating speed of the first gear disk 80 is lower than that of the driving gear 48, the left side of the first gear disc 80 is an integrally formed first driving gear 79, the rotation speed of the first driving gear 79 is the same as that of the first gear disc 80, the first driving gear 79 drives the second driving gear 83 to rotate, the second driving gear 83 drives the second gear disc 46 to rotate, and similarly, at this time, the rotation speed of the second gear disc 46 is lower than that of the first driving gear 79, the left side of the second gear disc 46 is an integrally formed second driving gear 78, the rotation speed of the second driving gear 78 is the same as that of the second gear disc 46, the second driving gear 78 drives the third driving gear 43 to rotate, the third driving gear 43 drives the third gear disc 42 to rotate, and similarly, the rotation speed of the third gear disc 42 is lower than that of the second driving gear 78, the left side of the third gear disc 42 is integrally formed with a driving seat 77, the left end of the driving seat 77 is sleeved with the middle part of the filter screen frame 76 after penetrating through the side wall of the third gear box 40, the rotation speed of the driving seat 77 is the same as that of the third gear disc 42, the rotation speed of the transmission seat 77 is the same as that of the filter screen frame 76, after the multi-stage speed reduction of a plurality of large and small gears, the rotation speed of the third gear disc 42 is furthest lower than that of the driving shaft 70, so that the speed reduction of the filter screen frame 76 is realized, the rotation speed of the filter screen frame 76 is greatly reduced relative to that of the driving shaft 70, the rotation speed of the filter screen 38 is correspondingly reduced, the abrasion degree of the brush head 56 in unit time is reduced, the service life of the brush head 56 is prolonged, frequent replacement of the brush head 56 is avoided, time and labor are saved, and the integral use cost is reduced. A fourth sealing ring 37 is tightly pressed between the transmission seat 77 and the third gear box 40, so that sewage in the drainage cavity 89 is prevented from entering the multi-stage reduction structure 10, and a third sealing ring 36 is tightly pressed between the transmission seat 77 and the filter screen frame 76, so that the sewage is further prevented from penetrating into the multi-stage reduction structure 10.

Preferably, the first driving member 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, where the surface of the first threaded rod 62 has an external thread, one end of the first threaded rod 62 is connected with the left end of the driving shaft 70, the other end is connected with the first rotating shaft 71, the first nut 61 is screwed onto the first threaded rod 62, the first south pole magnetic sleeve 60 is fixedly sleeved onto the first nut 61, two ends of the first threaded rod 62 are respectively provided with a first limiting rod 68, two sides of the first nut 61 are respectively provided with a first baffle 59, the first north pole magnetic sleeve 58 is fixedly connected onto the driving gear 48, the left end of the first rotating shaft 71 sequentially penetrates through the driving gear 48, the first driving tooth 79, the second driving tooth 78, the driving seat 77, the impeller 35, and the first rotating shaft 71 is rotatably connected with the driving gear 48, the first driving tooth 79, the second driving tooth 78, and the driving seat 77, and is fixedly connected with the middle part of the impeller 35.

In this scheme, the theory of operation of first driving piece: when the filter screen 38 does not need to be cleaned, the impeller pump body 06 works, the driving shaft 70 of the direct current motor 07 rotates forward, so that the first south pole magnetic sleeve 60 is separated from the first north pole magnetic sleeve 58 until the first limit rod 68 on the right side of the first threaded rod 62 contacts with the corresponding first baffle plate 59, at the moment, the first nut 61 follows the first threaded rod 62 to rotate, the first rotating shaft 71 and the driving gear 48 rotate relatively without transmitting rotation force, the multistage speed reducing structure 10 does not act, the filter screen frame 76 does not rotate, and only drainage operation is currently performed; when the filter screen 38 needs to be cleaned, the driving shaft 70 is reversed, the rotation force is transmitted to the first nut 61 through 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 limiting 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 gear 48 to rotate and provide power for the multi-stage reduction structure 10, and finally the multi-stage reduction structure 10 drives the filter screen frame 76 to rotate, so that the brush head 56 cleans sundries on the filter screen 38. The filter screen 38 has a regeneration function, the impeller pump body 06 does not need to be frequently disassembled to clean the filter screen 38, time and labor are saved, the working states of the multi-stage speed reduction structure 10 and the emptying structure can be switched through the positive and negative rotation of the direct current motor 07, the two empty consumption is avoided, the service lives of the multi-stage speed reduction structure 10 and the emptying structure are effectively prolonged, the electric energy loss of the washing device is reduced, and the cost is saved.

Preferably, the first gear case 81, the second gear case 44, and the third gear case 40 are arranged side by side along the length direction of the first rotation shaft 71, the three gear cases are disposed in the mounting sleeve 45, the left side of the mounting sleeve 45 is open, the right side of the mounting sleeve is closed, the mounting sleeve 45 is clamped in the housing 11, the driving gear 48 is rotationally connected with the right side wall of the mounting sleeve 45, the connecting shafts 85 for rotationally mounting the first power gear 82, the second power gear 83, and the third power gear 43 are respectively formed between the first gear case 81 and the right side wall of the mounting sleeve 45, between the second gear case 44 and the first gear case 81, and between the third gear case 40 and the second gear case 44, the mounting cavities 51 for mounting the first gear case 80 and the first power gear 82, the second gear case 46 and the second power gear 83, and the third gear case 42 and the third power gear 43 are respectively disposed on the right side wall of the mounting sleeve 45, the left side wall of the first gear case 81, and the left side wall of the second gear case 44, and the connecting shafts 85 for rotationally mounting the first power gear case 82, the second power gear case and third power gear case 43 are respectively disposed, and the connecting shafts 85 are protruded toward the filter screen 38;

the first gear disc 80, the second gear disc 46 and the third gear disc 42 are all of a pelvic cavity structure with rightward openings, the teeth are all arranged on the circumferential inner side wall of the pelvic cavity structure, two positioning gears 53 positioned on two sides of the first rotating shaft 71 are symmetrically distributed on the bottom walls of the first gear disc 80, the second gear disc 46 and the third gear disc 42, and the positioning gears 53 are respectively meshed with the corresponding first gear disc 80, the corresponding second gear disc 46 and the corresponding third gear disc 42.

Specifically, three gear boxes are arranged side by side in sequence from left to right, three gears are clamped in the mounting sleeve 45, the structure of the mounting sleeve 45 is matched with the size of the shell 11, the left side of the mounting sleeve 45 is provided with a side wall, a sixth sealing ring 47 is arranged between the right side wall and the inner wall of the shell 11, a fifth sealing ring 41 is tightly pressed between the third gear box 40 and the inner wall of the mounting sleeve 45, a mounting cavity 51 for mounting the first power tooth 82 and the first gear disc 80 is formed between the right side of the first gear box 81 and the side wall of the mounting sleeve 45, a mounting cavity 51 for mounting the second power tooth 83 and the second gear disc 46 is formed between the right side of the second gear box 81 and the left side of the first gear box 81, the size of the mounting cavity 51 is basically consistent, in order to fix the three power teeth conveniently, the left side wall of the mounting sleeve 45 and the left side of the first gear box 81 are respectively provided with a connecting shaft 85, the three connecting shafts 85 are positioned on the same straight line and are connected with the three power teeth in a sleeved mode, and the three power shafts are respectively rotated correspondingly.

In this scheme, three gear disk all is pelvic cavity structural style, and three gear disk is vertical setting side by side, and three power tooth is installed in this pelvic cavity structure, and the tooth setting of three gear disk is on the circumference lateral wall of pelvic cavity structure, simultaneously in order to maintain every gear disk pivoted stability, rotates on the diapire of the pelvic cavity structure of every gear disk and is equipped with positioning gear 53, and positioning gear 53 and gear disk upper tooth mesh, as shown in fig. 8 and 9, positioning gear 53 symmetric distribution is in the both sides of first pivot 71.

Example 3

The washing device comprises a washing shell 01 and a washing box 04, wherein the washing box 04 is positioned in the washing shell 01, the water outlet position of the washing box 04 is connected with a water inlet port 12 of a pump head body 13 through a connecting pipe 05, a water outlet port 14 of the pump head body 13 is connected with a drain pipe 02, the drain pipe 02 extends to the outside of the washing box 04, and an extension pipe 03 connected with an emptying pipe 20 is arranged in the drain pipe 02.

In this embodiment, as shown in fig. 13, in the washing device, as an example of a washing machine, sewage discharged from the washing tank 04 in the washing shell 01 is discharged to the water inlet port 12 on the impeller pump body 06 by the connecting pipe 05, then enters the water outlet cavity 89, the impeller pump body 06 works, the driving shaft 70 of the direct current motor 07 rotates forward to drive the first threaded rod 62 and the second threaded rod 69 to synchronously rotate, the first nut 61 and the second nut 64 are relatively close, the first south pole magnetic sleeve 60 is separated from the first north pole magnetic sleeve 58, the second south pole magnetic sleeve 63 is separated from the second north pole magnetic sleeve 65, until the first limit rod 68 on the right side of the first threaded rod 62 is contacted with the corresponding first baffle 59, the second limit rod 67 on the left side of the second threaded rod 69 is contacted with the corresponding second baffle 66, the first nut 61 and the second nut 64 respectively rotate along with the first threaded rod 62 and the second threaded rod 69, at this time, the second rotating shaft 33 and the driving gear 22 rotate relatively, but no rotation force is transmitted, the structure is in a stopped state, and simultaneously, the speed reducing structure 10 stops working, the first rotating shaft 33 drives the first rotating shaft 33 to the water outlet port 35 to the water outlet port 02 from the water outlet port 14 to the water outlet port 02, or the other water outlet port 02 is discharged from the water outlet port 14; when the sewage in the drainage cavity 89 is about to be drained, air is mixed into the drainage cavity 89, and the impeller pump body 06 cannot pump the air, so that the sewage in the drainage pipe 02 falls back into the drainage cavity 89, at this time, the driving shaft 70 of the direct current motor 07 is reversed to drive the first threaded rod 62 and the second threaded rod 69 to synchronously rotate, and the first nut 61 and the second nut 64 are relatively far away until the first south pole magnetic sleeve 60 is adsorbed by the first north pole magnetic sleeve 58, the second south pole magnetic sleeve 63 is adsorbed by the second north pole magnetic sleeve 65, the first limit rod 68 on the left side of the first threaded rod 62 is contacted with the corresponding first baffle 59, the second limit rod 67 on the right side of the second threaded rod 69 is contacted with the corresponding second baffle 66, the first threaded rod 62 and the second threaded rod 69 are respectively rotated by the first nut 61 and the second nut 64, at this time, the second nut 64 is driven by the second threaded rod 69 to synchronously rotate the second south pole magnetic sleeve 63, the second south pole magnetic sleeve 63 drives the second north pole magnetic sleeve 65 to rotate under the action of the second limiting rod 67 and the second baffle 66, the second north pole magnetic sleeve 65 drives the driving gear 22 to rotate, the driving gear 22 drives the driven gear 23 to rotate, power is input to the emptying structure, the pressure sensing diaphragm 25 in the emptying structure is driven by the speed reduction driving component to act, the volume of the pump water cavity 26 is changed, when the volume of the pump water cavity 26 is increased, residual sewage in the drain water cavity 89 is sucked, the residual sewage is sequentially sucked into the pump water cavity 26 through the filter screen 38, the filter water cavity 39, the water inlet flow channel 21, the water inlet cavity 72 and a water inlet hole (not marked in the figure) at the water inlet one-way valve clack 28, then the volume of the pump water cavity 26 is reduced, the sucked sewage is pumped into the emptying pipe 20 after passing through a water outlet hole (not marked in the figure) at the water outlet one-way valve clack 87, the water outlet cavity 73, the water outlet flow channel 15 and the pipe plug 16, the emptying pipe 20 can pass through the inside of the water discharging pipe 02 and can be independently discharged to other appointed places, so that even if air is mixed in the water discharging cavity 89, the emptying structure can also act, the residual sewage in the water discharging cavity 89 can be completely discharged, the phenomenon that the domestic environment is influenced by malodorous smell generated by sewage accumulation in the water discharging cavity 89 is avoided, meanwhile, the washing device can not be polluted, the residual sewage in the water discharging cavity 89 is completely discharged by adopting a mode of extruding and pulling the pressure sensing diaphragm 25, the position relation between the emptying pipe 20 and the liquid level of the washing box 04 and the water discharging pump body is not needed to be considered like a mode of emptying through a siphon principle, and the position of the emptying pipe 20 is more flexible. Simultaneously, the first threaded rod 62 transmits the rotation force to the first nut 61, the first nut 61 drives the first south pole magnetic sleeve 60 to rotate synchronously, the first south pole magnetic sleeve 60 drives the first north pole magnetic sleeve 58 to rotate under the action of the first limiting rod 68 and the first baffle 59, the first north pole magnetic sleeve 58 drives the gear 48 to rotate and provide power for the multi-stage reduction structure 10, and then the filter screen frame 76 is driven to rotate, so that the brush head 56 cleans sundries on the filter screen 38. The filter screen 38 has a regeneration function, the impeller pump body 06 does not need to be frequently disassembled to clean the filter screen 38, time and labor are saved, the working states of the multi-stage speed reduction structure 10 and the emptying structure can be switched through the positive and negative rotation of the direct current motor 07, the two empty consumption is avoided, the service lives of the multi-stage speed reduction structure 10 and the emptying structure are effectively prolonged, the electric energy loss of the washing device is reduced, and the cost is saved.

The foregoing description of the preferred embodiment of the utility model is not intended to limit the utility model in any way, but rather to cover all modifications, equivalents, improvements and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a switchable working condition's impeller pump, includes impeller pump body (06), impeller pump body (06) include pump head body (13), be equipped with drainage chamber (89) in pump head body (13), filter water cavity (39), drainage chamber (89) are put through with inlet port (12), go out water interface (14), be equipped with evacuation pipe (20) in water outlet port (14), evacuation pipe (20) intercommunication has evacuation structure, be equipped with impeller (35) in drainage chamber (89), a serial communication, be equipped with between pump head body (13) and the evacuation structure and be used for providing direct current motor (07) of power for impeller (35) and evacuation structure, direct current motor (07) drive shaft (70) one end is equipped with the first driving piece that is connected with impeller (35), the other end is equipped with the second driving piece that is connected with evacuation structure, drive shaft (70) corotation or reversal control second driving piece switch evacuation structure begin or stop carrying the residual sewage in drainage chamber (89) to the working condition of evacuation pipe (20).

2. The impeller pump with the switchable working condition according to claim 1, wherein the emptying structure is arranged on the right side of the second driving part, the emptying structure comprises a speed reduction driving component, a pressure sensing diaphragm (25), a partition plate (27) and a shell, the shell is formed by connecting a pump shell (34) and an outer cover (08) through bolts, the partition plate (27) is clamped between the pump shell (34) and the outer cover (08), a water inlet cavity (72) and a water outlet cavity (73) which are respectively communicated with a water discharge cavity (89) and an emptying pipe (20) are arranged in the emptying structure, the pressure sensing diaphragm (25) is tightly pressed between the partition plate (27) and the shell in a circumferential sealing manner, a water pumping cavity (26) is formed between the pressure sensing diaphragm (25) and the partition board (27), a water inlet hole and a water outlet hole which are respectively communicated with the water inlet cavity (72) and the water outlet cavity (73) are formed in the partition board (27), a water inlet one-way valve clack (28) fixed on the partition board (27) is arranged on one side of the water inlet hole and covers the water inlet hole, a water outlet one-way valve clack (87) fixed on the partition board (27) and covers the water outlet hole are arranged on one side of the water outlet hole, and the pressure sensing diaphragm (25) pumps residual sewage in the water outlet cavity (89) to the emptying pipe (20) under the combined action of the speed reducing driving component and the second driving component;

still including being located water route board (09) of baffle (27) lower extreme, water route board (09) are by bottom plate (17) and roof (18) looks adaptation joint each other, compress tightly between baffle (27) and water route board (09) has second sealing washer (29), be formed with in roof (18) into water runner (21), go out water runner (15), water inlet end (74) and filtration water cavity (39) switch-on of water runner (21), water outlet end and water inlet cavity (72) switch-on, water outlet runner (15) one end and water outlet cavity (73) switch-on, the other end intercommunication has pipe plug (16), in evacuation runner (86) of evacuation pipe plug (16) upper end cover locate evacuation pipe (20), pipe plug (16) circumference embedding has first sealing washer (19).

3. The impeller pump in a switchable working state according to claim 2, wherein the speed reduction driving assembly comprises a driving gear (22), a driven gear (23), a driving connecting rod (24) and an eccentric post (32), the driving gear (22) is connected with a second driving piece, a first bearing (50) is arranged on the driving shaft (70) and positioned on the left side of the driving gear (22), the lower end of the driving gear (22) is meshed with the driven gear (23), the driven gear (23) is rotatably connected with a positioning post (84) on a pump shell (34), the positioning post (84) extends towards the direction of an outer cover (08) and is eccentrically connected with the eccentric post (32), the left side of the eccentric post (32) is connected with the right side of the driven gear (23), a second bearing (31) is sleeved on the eccentric post (32), the outer ring of the second bearing (31) is sleeved with the driving connecting rod (24), the lower end of the driving connecting rod (24) is connected with the top of a pressure sensing diaphragm (25), and the locking screw (30) connects the pressure sensing diaphragm (25) and the driving connecting rod (24) into a whole.

4. The impeller pump according to claim 1, wherein the second driving member comprises 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) is provided with external threads, one end of the second threaded rod (69) is connected with the right end of the driving shaft (70), the other end of the second threaded rod is connected with the second rotating shaft (33), the second nut (64) is in threaded connection with the second threaded rod (69), the second south pole magnetic sleeve (63) is fixedly sleeved on the second nut (64), two ends of the second threaded rod (69) are respectively provided with a second limiting rod (67), two side surfaces of the second nut (64) are respectively provided with a second baffle plate (66), the second north pole magnetic sleeve (65) is fixedly connected to the driving gear (22), and the right end of the second rotating shaft (33) penetrates through the driving gear (22) and is rotationally connected with the driving gear (22).

5. The impeller pump with the switchable working state according to claim 1, wherein the pump head body (13) is internally provided with a filter water cavity (39) communicated with the water drainage cavity (89), a filter screen (38) is arranged between the water drainage cavity (89) and the filter water cavity (39), a brush head (56) contacted with the filter screen (38) is arranged on the side surface of the filter screen (38), the filter screen (38) is fixed on a filter screen frame (76), a sliding cavity (88) matched with the brush head (56) is arranged on the inner wall of the pump head body (13), the brush head (56) is arranged in the sliding cavity (88) in a sliding manner, the brush head (56) is positioned on the side surface of the filter screen (38), a spring (54) is arranged between the brush head (56) and the inner wall of the sliding cavity (88), a limit post (55) opposite to the brush head (56) is arranged on the side wall of the sliding cavity (88), a multistage speed reducing structure (10) which is provided with initial power by a first driving piece, the multistage speed reducing structure (10) is formed by a plurality of multistage speed reducing pieces connected with the first piece in series with the first piece and the filter screen (38) in a transmission manner, the multistage speed reducing transmission speed of the filter screen is gradually connected with the filter screen (76) in a transmission manner, the driving shaft (70) rotates forward or reversely to control the first driving member to switch the working state of the multistage speed reduction structure (10) to start or stop rotating.

6. The impeller pump of claim 5, wherein the multistage speed reducing structure (10) comprises a first stage transmission member, a second stage transmission member and a third stage transmission member which are sequentially distributed towards the direction of the filter screen (38), the three transmission members are arranged in the shell (11), the first driving member drives the first stage transmission member to rotate, the first stage transmission member drives the second stage transmission member to rotate, the second stage transmission member drives the third stage transmission member to rotate, and the third stage transmission member drives the filter screen frame (76) to rotate, and the rotation speeds of the first stage transmission member, the second stage transmission member and the third stage transmission member are gradually reduced.

7. The impeller pump of claim 6, wherein the primary transmission member comprises a first gear box (81), a first gear plate (80), a first transmission gear (79) and a first power gear (82), the secondary transmission member comprises a second gear box (44), a second gear plate (46), a second transmission gear (78) and a second power gear (83), the tertiary transmission member comprises a third gear box (40), a third gear plate (42), a third power gear (43) and a transmission seat (77), the first transmission gear (79) is arranged on the left side of the first gear plate (80), the second transmission gear (78) is arranged on the left side of the second gear plate (46), the transmission seat (77) is arranged on the left side of the third gear plate (42), the left end of the transmission seat (77) penetrates through the side wall of the third gear box (40) and is connected with the middle part of the filter screen frame (76), the lower end of the first power gear (82) is meshed with the driving gear (48), the upper end of the driving gear (48) is meshed with the first gear plate (80), and simultaneously the second power gear (78) is meshed with the second gear plate (46), and the upper end of the driving gear (80) is meshed with the second power gear plate (48) and the second power gear plate (43) simultaneously, the third gear plate (42) is engaged.

8. The impeller pump according to claim 7, wherein the first driving member comprises 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) is provided with external threads, one end of the first threaded rod (62) is connected with the left end of the driving shaft (70), the other end of the first threaded rod is connected with the first rotating shaft (71), the first nut (61) is in threaded connection with the first threaded rod (62), the first south pole magnetic sleeve (60) is fixedly sleeved on the first nut (61), two ends of the first threaded rod (62) are respectively provided with a first limiting rod (68), two side surfaces of the first nut (61) are respectively provided with a first baffle plate (59), the first north pole magnetic sleeve (58) is fixedly connected with the driving gear (48), the left end of the first rotating shaft (71) sequentially penetrates through the driving gear (48), the first transmission teeth (79), the second transmission teeth (78), the transmission seat (77) and the impeller (35), the first rotating shaft (71) are fixedly connected with the first transmission seat (77) and the transmission seat (35).

9. The impeller pump according to claim 7, wherein the first gear case (81), the second gear case (44) and the third gear case (40) are arranged side by side along the length direction of the first rotating shaft (71), the three gear cases are arranged in the mounting sleeve (45), the left side of the mounting sleeve (45) is opened, the right side of the mounting sleeve (45) is closed, the mounting sleeve (45) is clamped in the shell (11), the driving gear (48) is rotationally connected with the right side wall of the mounting sleeve (45), the first gear case (81) is rotationally connected with the right side wall of the mounting sleeve (45), the second gear case (44) is rotationally connected with the right side wall of the mounting sleeve (45), the third gear case (40) is rotationally connected with the first gear case (82), the second gear case (44) is rotationally connected with the second gear case (44) through the first power gear case (82), the second gear case (46) is rotationally connected with the second power gear case (83), the third gear case (43) is rotationally connected with the left side wall of the first gear case (81), the three connecting shafts (85) are all protruded towards the direction of the filter screen (38);

The first gear disc (80), the second gear disc (46) and the third gear disc (42) are all of a pelvic cavity structure with openings towards the right side, teeth are arranged on the circumferential inner side wall of the pelvic cavity structure, two positioning gears (53) positioned on two sides of the first rotating shaft (71) are symmetrically distributed on the bottom wall of the first gear disc (80), the second gear disc (46) and the bottom wall of the third gear disc (42), and the positioning gears (53) are respectively meshed with the corresponding first gear disc (80), the corresponding second gear disc (46) and the corresponding third gear disc (42).

10. A washing device comprising the impeller pump according to any one of claims 1-9, characterized by comprising a washing shell (01) and a washing tank (04), wherein the washing tank (04) is positioned in the washing shell (01), the water outlet position of the washing tank (04) is connected with a water inlet interface (12) of a pump head body (13) through a connecting pipe (05), a water outlet interface (14) of the pump head body (13) is connected with a water outlet pipe (02), the water outlet pipe (02) extends to the outside of the washing tank (04), and an extension pipe (03) connected with an evacuation pipe (20) is arranged in the water outlet pipe (02).