CN219070168U - Cleaning machine - Google Patents

Abstract

The utility model relates to a cleaning machine, which comprises a water tank body, a water pumping mechanism and a spray arm, wherein the water tank body is provided with a water inlet; the top of the water return area is covered with a filter plate, the filter plate is provided with a mounting opening for exposing the top wall of the water pumping mechanism, the water outlet is arranged on the top wall of the water pumping mechanism and exposed out of the mounting opening, and the spray arm is detachably connected to the water outlet of the water pumping mechanism; and in a state that the spray arm is separated from the water pumping mechanism, the filter plate and the top wall of the water pumping mechanism form at least part of the bottom wall of the water tank body. When the spray arm is connected to the water pumping mechanism, the spray arm can be used as a dish washer, the spray arm is taken down from the water pumping mechanism, the filter plate and the top wall of the water pumping mechanism form part of the bottom wall of the water tank body, and the spray arm can be used as a common water tank, so that the dish washer and the common water tank can be conveniently switched for use; when the water return area is directly communicated with the water pumping mechanism when the water return area is used as a dish washer, water return through the water pipe externally connected with the water tank body is not needed, the water return stroke is shortened, the fluid energy loss is reduced, and the jet lift and the cleaning effect are improved.

Description

Cleaning machine

Technical Field

The utility model relates to the technical field of dish washing machines, in particular to a washing machine for washing tableware, fruits and vegetables.

Background

Currently, most users' kitchens are generally provided with two sinks, and if a sink type dishwasher is installed, one of the sinks is used as a general sink and the other sink is used as a washing sink of the dishwasher. The spray system is arranged in the washing tank, and can not be used as a common water tank.

The prior application CN202111462798.8 of the applicant discloses a structure, which comprises a water tank body, wherein the bottom of the water tank body is provided with a water outlet and a water outlet cavity connected below the water outlet, the structure also comprises a water return pipeline, a sealing cover, an elastic piece and a spray arm, the bottom of the water tank body is provided with a water return port positioned beside the water outlet, and the water return pipeline is arranged outside the water tank body and is used for communicating the water outlet cavity with the water return port; the sealing cover is arranged at the water return port in a manner of moving up and down and is used for opening or closing the water return port; the elastic piece enables the sealing cover to always keep upward movement so as to close the water return port; the spray arm is detachably arranged in the water tank body and corresponds to the water return port, and in the state that the spray arm is in plug-in connection with the water return port, the sealing cover is pressed into the water return pipeline by the spray arm so that the spray arm is communicated with the water return port, and in the state that the spray arm is separated from the water return port, the sealing cover closes the water return port under the driving of the elastic piece.

The scheme can be used as a dish washer or a common water tank, and compared with the existing common water tank, the water tank body is only provided with the water return port by means of modification, and the water tank has the advantages of simple overall structure and low modification cost. However, due to the adoption of the closed water pump, water needs to be supplied through the water return pipeline, so that a water return path is longer, and the injection lift and the cleaning effect are affected.

Disclosure of Invention

Aiming at the current state of the art, the utility model provides the cleaning machine which is convenient to switch between the dish washing machine and the common water tank, has large spraying lift and good cleaning effect.

The technical scheme adopted for solving the technical problems is as follows:

a cleaning machine, comprising:

the bottom of the water tank body is provided with a concave backwater area;

the water pumping mechanism is arranged in the water return area and is provided with a water suction port communicated with the water return area and a water outlet for water supply output;

the spray arm is arranged above the water return area and is communicated with the water outlet of the water pumping mechanism;

the top of the water return area is covered with a filter plate, the filter plate is provided with a mounting opening for exposing the top wall of the water pumping mechanism, the water outlet is arranged on the top wall of the water pumping mechanism and exposed out of the mounting opening, and the spray arm is detachably connected to the water outlet of the water pumping mechanism; and in a state that the spray arm is separated from the water pumping mechanism, the filter plate and the top wall of the water pumping mechanism form at least part of the bottom wall of the water tank body.

The utility model further comprises a slag collecting basket, wherein the bottom of the water return area is provided with a water outlet, the lower part of the slag collecting basket is accommodated in the water return area, the bottom of the slag collecting basket is arranged corresponding to the water outlet, and the top of the slag collecting basket is provided with a slag collecting port exposed out of the filter plate. The slag collecting basket can filter slag collecting when being used as a dish washer and filter slag when being used as a common water tank.

Preferably, the outer bottom of the tub body is provided with a drain assembly connected to the drain opening. The water draining assembly can comprise a water draining valve and a water draining pump, when the water draining assembly is used as a dish washing machine, the water draining valve can be used for closing the water draining port, when water is needed to be drained, the water draining valve can be used for opening the water draining port, water draining is carried out through the powerful water sucking and draining function of the water draining pump, and the effect that no residual water exists in a water returning area is achieved.

Preferably, a heating element which is arranged around the periphery of the water outlet and is used for heating water is arranged at the bottom of the water return area. When the water heater is used as a dish washer, the heating piece can be used for heating washing water, and is arranged around the periphery of the water outlet, so that not only can the assembly space be saved, but also the heating efficiency can be improved due to the maximum water flow at the slag collecting basket in the water return process, and in addition, the slag collecting basket and the water outlet can be sterilized at high temperature.

Preferably, the heating element is shaped into a disc, the water outlet is arranged in the middle of the disc-shaped structure, the heating element and the water draining assembly are integrated together to form an assembly whole, and the bottom wall of the water return area is provided with an assembly port which is integrally installed with the assembly whole. The heating element and the drainage assembly are integrated together, so that the heating element and the drainage assembly are conveniently and integrally arranged at the bottom of the water tank body, and the heating element and the drainage assembly are convenient to manufacture and install.

Preferably, the water tank body is square, the water return area is oval and is arranged along the diagonal of the water tank body, the first end of the water return area is close to the first corner of the water tank body and is arranged, the second end of the water return area corresponds to the middle of the water tank body, the water pumping mechanism is close to the second end of the water return area and is arranged centrally relative to the bottom of the water tank body, and the slag collecting basket is located between the water pumping mechanism and the first corner of the water tank body. The oval backwater area is arranged along the diagonal of the water tank body and is offset at one corner of the water tank body, so that the second end of the oval backwater area is utilized to install the water pumping mechanism in the middle of the water tank body, the slag collecting basket is arranged closer to the water pumping mechanism, the overall volume of the backwater area is greatly reduced in such an arrangement mode, the water consumption of single cleaning is reduced, the backwater effect is effectively improved, the cleaning effect is improved, the bottom space of the water outlet tank body is conveniently saved, other functional components are installed, and the space utilization rate is improved.

In the present utility model, the pumping mechanism includes:

the water sucking port is arranged at the bottom of the pump shell;

the space guide vane is arranged in the pump shell and divides the inner cavity of the pump shell into an upper cavity and a lower cavity which are relatively independent, and is used for inputting water in the lower cavity into the upper cavity after being circumferentially dispersed and outputting the water upwards from an axial direction through a water outlet;

the impeller is rotatably arranged in the lower cavity and is used for sucking water in the water return area into the lower cavity and conveying the water upwards; and

the driving piece is arranged outside the water tank body and is used for providing power for rotation of the impeller.

According to the water pumping mechanism, the space guide vanes and the impellers for axially guiding and pressurizing axial inflow water and axially outputting the pressurized axial inflow water are arranged in the pump shell so as to meet the water pressure requirement, on the basis, the spray arm is arranged above the pump shell without being matched with the impellers, so that the water flow stability of the inflow spray arm is improved, the rotation stability of the spray arm is further improved, and meanwhile, the impellers are not correspondingly matched with the water inlet of the spray arm, so that the water pressure at the water inlet of the spray arm is stable, and the problems of gas suction and water leakage are avoided.

Preferably, the space guide vane comprises a cover plate and guide vanes, the cover plate is transversely arranged in the middle of the pump shell and divides the inner cavity of the pump shell into an upper cavity and a lower cavity which are relatively independent, the water outlet is communicated with the upper cavity, the guide vanes are arranged on the lower surface of the cover plate in a plurality of vertical directions, the guide vanes cover the circumferential area of the cover plate and are distributed at intervals along the circumferential direction, the guide vanes extend spirally from the edge of the cover plate inwards against the water flow direction, the guide flow channels are restrained between two adjacent guide vanes, and at least partial gaps for the guide flow channels to be communicated with the upper cavity are formed by partial missing of the cover plate parts corresponding to the tops of the guide vanes. The space guide vane is used for axially feeding water to the pump through circumferential guide pressurization and axially outputting the water to meet the water pressure requirement, on the basis, the spray arm is arranged on the pump shell without being matched with the impeller, so that the water flow stability of the entering spray arm is improved, the rotation stability of the spray arm is further improved, and meanwhile, the impeller is not correspondingly matched with the water inlet of the spray arm, so that the water pressure at the water inlet of the spray arm is stable, and the problems of gas suction and water drainage are avoided.

Preferably, the impeller is a centrifugal impeller, the bottom of the impeller is provided with an inlet corresponding to the water suction port, and the side of the impeller is provided with an outlet corresponding to the guide vane.

Preferably, the outer ends of the guide vanes are arranged close to the inner peripheral wall of the pump shell, the outer ends of the guide vanes are arranged close to the edge of the impeller, the outer end parts of the first guide vanes and the inner end arrangement parts of the second guide vanes are arranged in a staggered mode, so that the guide flow channel is enclosed, and the cover plate is in a range from the outer end of the corresponding first guide vane to the outer end of the second guide vane to form the notch. By adopting the structure, the notch is reasonably connected with the water outlet end of the diversion flow channel, so that the energy loss is reduced.

Preferably, the upper surface of the cover plate is provided with a converging blade which extends from the edge to the middle in a spiral manner and is used for converging water conveyed by the notch to the water outlet. The structure can rectify and guide the water flow entering the upper cavity, avoid energy loss caused by water flow disorder and improve water pressure and lift.

Preferably, the utility model further comprises a sealing cover and an elastic part, wherein the sealing cover is arranged in the upper cavity of the pump shell in a vertically movable way and is used for opening or closing the water outlet, the elastic part is arranged on the space guide vane and keeps the sealing cover always moving upwards, the bottom of the spray arm is provided with a water inlet sleeve, the lower end of the water inlet sleeve is provided with a support leg which can penetrate through the water outlet and press the sealing cover to move downwards, and the water inlet sleeve is connected to the top of the water pump through a detachable locking structure. The structure is used for pressing the sealing cover to open the water outlet, and meanwhile, the spray arm is communicated with the water outlet of the pump shell.

Preferably, in the assembled state of the spray arm and the pumping mechanism, the bottom edge of the water inlet sleeve abuts against the top wall of the pump shell and is arranged around the periphery of the water outlet, the lower ends of the support legs abut against the upper surface of the sealing cover, and the elastic piece is in a compressed state.

Preferably, the support leg comprises at least two support ribs which extend downwards from the inner edge of the lower end of the water inlet sleeve, the support ribs are arranged at intervals in the circumferential direction of the water inlet sleeve, and the lower end of the support rib is connected with an inverted U-shaped guide piece which is arranged at the central position of the corresponding water inlet sleeve and is arched upwards. The supporting legs formed by the supporting ribs are positioned in the upper cavity, so that the supporting legs can also play a role in guiding water flow upwards, and the energy loss of the water flow is reduced.

Preferably, the space guide vane is provided with a converging blade which is positioned in the upper cavity, extends from the edge of the upper cavity to the middle in a spiral manner and is used for converging water conveyed by the lower cavity to the water outlet, the inner ends of the converging blades jointly enclose a containing cavity for containing the sealing cover and the elastic piece, the sealing cover can be arranged in the containing cavity in an up-and-down moving manner, and the elastic piece is elastically compressed below the sealing cover. The converging blade gathers water flowing to the middle from the edge of the upper cavity, and then flows upwards through the supporting legs to reduce energy loss.

Preferably, the edge of the sealing cover is provided with a plurality of spacing openings which are arranged at intervals, and the inner ends of the converging blades extend into the spacing openings to be matched with the spacing openings in an up-and-down guiding way. The converging blades are used for converging and rectifying water in the upper cavity on one hand and forming up-and-down guiding cooperation with the sealing cover on the other hand.

Preferably, the sealing cover is provided with a top wall which is horizontally arranged and a diversion inclined wall which extends outwards and downwards along the radial direction from the edge of the top wall, the limiting opening is formed in the diversion inclined wall, and the upper surface of the top wall of the sealing cover forms a bearing surface which is used for being matched with the supporting legs. This structure is advantageous for further reducing energy loss.

In order to be convenient for retrain the spring position, be provided with the first spacing portion of upwards extending on the diapire of holding chamber, correspondingly, the lower surface of closing cap is provided with the second spacing portion of downwardly extending, the elastic component be the spring, and the lower extreme cover of this spring is put in first spacing portion periphery, the upper end cover of spring is put in second spacing portion periphery.

Preferably, the locking structure comprises a clamping ring, an assembling sleeve which can be sleeved on the periphery of the water inlet sleeve and is in locking connection with the water inlet sleeve is arranged in the middle of the clamping ring, and the outer edge of the clamping ring is in locking connection with the outer peripheral wall of the pump shell exposed out of the filter plate through a fastening structure. This structure is convenient for realize detachable connection.

Preferably, the upper surface of the pump housing is gradually inclined downward from the center toward the edge so as to form a guide surface in a state of being used as a general sink. The structure is convenient for avoiding water inflow in the pump shell when the water tank is used as a common water tank.

Compared with the prior art, the utility model has the advantages that: when the spray arm is connected to the water pumping mechanism, the spray arm can be used as a dish washer, the spray arm is taken down from the water pumping mechanism, the filter plate and the top wall of the water pumping mechanism form part of the bottom wall of the water tank body, the spray arm can be used as a common water tank, the operation is convenient, and the switching between the dish washer and the common water tank is convenient; when using as dish washer, return water region is direct to communicate with pump water mechanism, and need not to pass through the external water pipe return water of basin body, has shortened the return water stroke, is favorable to reducing fluid energy loss, improves and sprays lift and cleaning performance.

Drawings

FIG. 1 is a schematic view of a washing machine according to an embodiment of the present utility model (as a dishwasher in use);

FIG. 2 is a schematic view of a cleaning machine according to an embodiment of the present utility model (as a common water tank in use);

FIG. 3 is a cross-sectional view of FIG. 1;

FIG. 4 is an enlarged view of portion A of FIG. 3;

FIG. 5 is a diagram of the spray arm and collar of an embodiment of the present utility model;

FIG. 6 is a schematic view of a top housing of a hidden portion of a pumping mechanism according to an embodiment of the present utility model;

FIG. 7 is an exploded view of a pumping mechanism according to an embodiment of the present utility model;

FIG. 8 is another angular view of FIG. 7;

FIG. 9 is a schematic diagram of a space vane according to an embodiment of the present utility model;

fig. 10 is a view of the sense angle of fig. 9.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 10, the cleaning machine of the present embodiment includes a water tank body 1, a water pumping mechanism 2, a shower arm 3, and a slag collecting basket 4.

The bottom of the water tank body 1 is provided with a concave backwater area 11, the top of the backwater area 11 is covered with a filter plate 12, the water pumping mechanism 2 is arranged in the backwater area 11, and a water suction port 201 communicated with the backwater area 11 and a water outlet 202 for water supply output are arranged. The spray arm 3 is arranged above the water return area 11 and is communicated with the water outlet 202 of the pumping mechanism 2. The filter plate 12 is provided with a mounting opening 121 for exposing the top wall of the water pumping mechanism 2, the water outlet 202 is arranged on the top wall of the water pumping mechanism 2 and exposed out of the mounting opening 121, and the spray arm 3 is detachably connected to the water outlet 202 of the water pumping mechanism 2; in a state that the spray arm 3 is separated from the water pumping mechanism 2, the filter plate 12 and the top wall of the water pumping mechanism 2 form part of the bottom wall of the water tank body 1.

The bottom of the water return area 11 is provided with a water outlet 111, the lower part of the slag collecting basket 4 is accommodated in the water return area 11, the bottom of the slag collecting basket 4 is arranged corresponding to the water outlet 111, and the top of the slag collecting basket 4 is provided with a slag collecting port 41 exposed out of the filter plate 12. The slag collecting basket 4 can filter slag collecting when being used as a dish washer and filter slag when being used as a common water tank. The outer bottom of the tub body 1 is provided with a drain assembly 112 connected to the drain port 111. The drain assembly 112 can comprise a drain valve and a drain pump, when the drain assembly is used as a dish washer, the drain valve can be used for closing the drain outlet, when the drain is needed, the drain outlet is opened through the drain valve, and the water is drained through the powerful water suction and drainage function of the drain pump, so that the effect that no residual water exists in a water return area is achieved.

The bottom of the water return area 11 is provided with heating elements 113 arranged around the periphery of the water outlet 111 for heating the water. When the water heater is used as a dish washer, the heating piece 113 can be used for heating washing water, is arranged around the periphery of the water outlet 111, not only can save assembly space, but also can improve heating efficiency due to the fact that water flow at the slag collecting basket 4 is maximum in the water return process, and in addition, can be used for sterilizing the slag collecting basket 4 and the water outlet 111 at high temperature. The heating element 113 is shaped into a disc, the water outlet 111 is arranged in the middle of the disc-shaped structure, the heating element 113 and the water discharging assembly 112 are integrated together to form an assembly whole, and the bottom wall of the water return area 11 is provided with an assembly port 114 which is matched with the assembly whole. The heating member 113 is integrated with the drain assembly 112, so that it is convenient to integrally install the heating member 113 at the bottom of the tub body 1, and to manufacture and install the heating member.

In this embodiment, as shown in fig. 2, the water tank body 1 is square, the water return area 11 is oval and is arranged along the diagonal line of the water tank body 1, the first end of the water return area 11 is arranged near the first corner of the water tank body 1, the second end is arranged corresponding to the middle part of the water tank body 1, the water pumping mechanism 2 is arranged near the second end of the water return area 11 and centered relative to the bottom of the water tank body 1, and the slag collecting basket 4 is positioned between the water pumping mechanism 2 and the first corner of the water tank body 1. The oval backwater region 11 is arranged along the diagonal line of the water tank body 1 and is offset at one corner of the water tank body 1, so that the second end of the oval backwater region 11 is utilized to install the water pumping mechanism 2 in the middle of the water tank body 1, the slag collecting basket 4 is arranged closer to the water pumping mechanism 2, the overall volume of the backwater region 11 is greatly reduced in such an arrangement mode, the water consumption of single cleaning is reduced, the backwater effect can be effectively improved, the cleaning effect is improved, the bottom space of the water outlet tank body is conveniently saved for installing other functional components, and the space utilization rate is improved.

In this embodiment, as shown in fig. 3-4, 6-10, the pumping mechanism 2 includes a pump housing 21, a space vane 22, an impeller 23, and a driver 24. The pump casing 21 has a substantially cylindrical shape, and the water suction port 201 is formed at the bottom of the pump casing 21. The space guide vane 22 is disposed in the pump casing 21 and divides the inner cavity of the pump casing 21 into an upper cavity 211 and a lower cavity 212 which are relatively independent, and is used for inputting water in the lower cavity 212 into the upper cavity 211 after being circumferentially dispersed and outputting the water upwards from the axial direction through the water outlet 202. The impeller 23 is a centrifugal impeller and is rotatably disposed in the lower cavity 212, and is used for drawing water in the water return area 11 into the lower cavity 212 and conveying the water upward. The driving member 24 is a motor, and is disposed outside the bottom of the water tank body 1, and is used for providing power for rotation of the impeller 23.

The water pumping mechanism 2 is provided with the space guide vane 22 and the impeller 23 in the pump shell 21, wherein the space guide vane 22 and the impeller 23 are used for pressurizing and axially outputting the axial inflow water through circumferential guidance so as to meet the water pressure requirement, and on the basis, the spray arm 3 is arranged on the pump shell 21 without being matched with the impeller 23, so that the stability of the water flow entering the spray arm 3 is improved, the rotation stability of the spray arm 3 is further improved, and meanwhile, the impeller 23 is not correspondingly matched with the water inlet of the spray arm 3, so that the water pressure at the water inlet of the spray arm 3 is stable, and the problems of gas suction and water drainage are avoided.

The space guide vane 22 comprises a cover plate 221 and guide vanes 222, the cover plate 221 is transversely arranged in the middle of the pump shell 21 and divides the inner cavity 21 of the pump shell into an upper cavity 211 and a lower cavity 212 which are relatively independent, the water outlet 202 is communicated with the upper cavity 211, the guide vanes 222 are multiple and vertically arranged on the lower surface of the cover plate 221, the guide vanes 222 cover the circumferential area of the cover plate 221 and are circumferentially arranged at intervals, the guide vanes 222 spirally extend inwards from the edge of the cover plate 221 against the water flow direction, guide flow channels 223 are restrained between two adjacent guide vanes 222, and at least partial deletion of the cover plate 221 corresponding to the top of the guide vanes 222 forms notches 224 for the guide flow channels 223 to be communicated with the upper cavity 211. The impeller 23 is a centrifugal impeller, the bottom of which is provided with an inlet arranged corresponding to the water suction port 201, and the side of which is provided with an outlet arranged corresponding to the guide vane 222.

The outer ends of the guide vanes 222 are arranged close to the inner peripheral wall of the pump shell 21, the outer ends of the guide vanes 222 are arranged close to the edge of the impeller 23, and in the two adjacent guide vanes 222, the outer end part of the first guide vane 222 and the inner end arrangement part of the second guide vane 222 are staggered so as to enclose a guide flow passage 223, and the cover plate 221 is in a range from the outer end of the corresponding first guide vane 222 to the outer end of the second guide vane 222 to form a notch 224. By adopting the structure, the notch 224 is reasonably connected with the water outlet end of the diversion flow passage 223, so that the energy loss is reduced.

The upper surface of the cover plate 221 is provided with a converging blade 225 which extends spirally from the edge to the middle and is used for converging the water conveyed through the notch 224 to the water outlet. The structure can rectify and guide the water flow entering the upper cavity 211, avoid energy loss caused by water flow disorder, and improve water pressure and lift.

In this embodiment, the shower nozzle further includes a cover 5 and an elastic member 6, the cover 5 is movably disposed in the upper cavity 211 of the pump housing 21 up and down, and is used for opening or closing the water outlet 202, the elastic member 6 is a spring, the elastic member 6 is disposed on the space vane 22, so that the cover 5 always keeps a trend of moving upwards, the bottom of the shower arm 3 is provided with a water inlet sleeve 31, the lower end of the water inlet sleeve 31 is provided with a support leg 32 capable of penetrating the water outlet 202 and pressing the cover 5 to move downwards, and the water inlet sleeve 31 is connected to the top of the water pump 21 through a detachable locking structure. The structure is used for pressing the sealing cover 5 to open the water outlet 202, and simultaneously, the spray arm 3 is communicated with the water outlet 202 of the pump shell 21.

In the assembled state of the spray arm 3 and the pumping mechanism 21, the bottom edge of the water inlet sleeve 31 abuts against the top wall of the pump shell 21 and is arranged around the periphery of the water outlet 202, the lower ends of the support legs 32 abut against the upper surface of the sealing cover 5, and the elastic piece 6 is in a compressed state.

As shown in fig. 4 and 5, the support legs 32 include three support ribs 321 extending downward from the inner edge of the lower end of the water inlet jacket 31, the support ribs 321 being arranged at intervals in the circumferential direction of the water inlet jacket 31, and the lower end of the support ribs 321 being connected with an inverted U-shaped deflector 322 arranged corresponding to the central portion of the water inlet jacket 31 and arched upward. The support legs 32 formed by the support ribs 321 are positioned in the upper cavity 211, so that the support legs can also play a role in guiding water upwards to reduce energy loss of the water.

The space guide vane 22 is provided with converging blades 225 which are positioned in the upper cavity 211 and extend from the edge of the upper cavity 211 to the middle in a spiral manner and are used for converging water conveyed by the lower cavity to the water outlet 202, the inner ends of the converging blades 225 jointly enclose a containing cavity 226 for containing the sealing cover 5 and the elastic piece 6, the sealing cover 5 is arranged in the containing cavity 226 in a vertically movable manner, and the elastic piece 6 is elastically compressed below the sealing cover 5. The converging vanes 225 gather water from the edges of the upper chamber 211 toward the middle and then direct the water upward through the legs 32 to reduce energy loss.

The edge of the sealing cover 5 is provided with a plurality of spacing openings 51 which are arranged at intervals, and the inner ends of the converging blades 225 extend into the spacing openings 51 to be matched with the spacing openings 51 in an up-and-down guiding way. The collecting blades 225 collect and rectify water in the upper chamber 211, and are used to form an up-and-down guide fit with the cover 5.

The cover 5 has a top wall arranged horizontally and a guide inclined wall 52 extending radially outwards and downwards from the edge of the top wall, the limiting opening 51 is formed on the guide inclined wall 52, and the upper surface of the top wall of the cover 5 forms a bearing surface for being matched with the support leg 32. This structure is advantageous for further reducing energy loss.

In order to facilitate restraining the position of the spring, a first limiting portion 2261 extending upwards is arranged on the bottom wall of the accommodating cavity 226, a second limiting portion 53 extending downwards is correspondingly arranged on the lower surface of the sealing cover 5, the lower end of the spring is sleeved on the periphery of the first limiting portion 2261, and the upper end of the spring is sleeved on the periphery of the second limiting portion 53.

The locking structure of this embodiment includes a collar 7, and an assembly sleeve 71 capable of being sleeved on the periphery of the water inlet sleeve 31 and being in locking connection with the water inlet sleeve 31 is provided in the middle of the collar 7, and the outer edge of the collar 7 is in locking connection with the peripheral wall of the pump casing 21 exposed above the filter plate 12 through a fastening structure. This structure is convenient for realize detachable connection.

The upper surface of the pump case 21 is gradually inclined downward from the center toward the edge to form a guide surface 210 in a state of being used as a general sink. The structure is convenient for avoiding water inflow in the pump shell when the water tank is used as a common water tank.

When the spray arm 3 of the embodiment is connected to the water pumping mechanism 2, the spray arm 3 can be used as a dish washer, the spray arm 3 is taken down from the water pumping mechanism 2, the filter plate 12 and the top wall of the water pumping mechanism 2 form part of the bottom wall of the water tank body 1, the spray arm can be used as a common water tank, the operation is convenient, and the switching between the dish washer and the common water tank is convenient; when using as dish washer, return water region 11 directly communicates with pump water mechanism 2, and need not to go back to the water through the external water pipe of basin body 1, has shortened the return water stroke, is favorable to reducing fluid energy loss, improves and sprays lift and cleaning performance.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims (20)

1. A cleaning machine, comprising:

the water tank comprises a water tank body (1), wherein a concave backwater area (11) is arranged at the bottom of the water tank body;

the water pumping mechanism (2) is arranged in the water return area (11), and is provided with a water suction port (201) communicated with the water return area (11) and a water outlet (202) for water supply output;

the spray arm (3) is arranged above the water return area (11) and is communicated with the water outlet (202) of the water pumping mechanism (2);

the method is characterized in that: the top of the water return area (11) is covered with a filter plate (12), the filter plate (12) is provided with a mounting opening (121) for exposing the top wall of the water pumping mechanism (2), the water outlet (202) is formed in the top wall of the water pumping mechanism (2) and is exposed out of the mounting opening (121), and the spray arm (3) is detachably connected to the water outlet (202) of the water pumping mechanism (2); and in a state that the spray arm (3) is separated from the water pumping mechanism (2), the filter plate (12) and the top wall of the water pumping mechanism (2) form at least part of the bottom wall of the water tank body (1).

2. The cleaning machine of claim 1, wherein: still include album sediment basket (4), open the bottom of return water region (11) has outlet (111), the lower part holding of album sediment basket (4) is in return water region (11) and the bottom corresponds outlet (111) and arranges, the top of album sediment basket (4) is provided with and exposes in collection sediment mouth (41) of filter (12).

3. The cleaning machine of claim 2, wherein: the outer bottom of the water tank body (1) is provided with a drainage assembly (112) connected with the drainage outlet (111).

4. A cleaning machine as claimed in claim 3, wherein: the bottom of the water return area (11) is provided with a heating piece (113) which is arranged around the periphery of the water outlet (111) and used for heating water.

5. The cleaning machine of claim 4, wherein: the heating piece (113) is formed into a disc shape, the water outlet (111) is formed in the middle of the disc-shaped structure, the heating piece (113) and the water outlet assembly (112) are integrated together to form an assembly whole, and an assembly port (114) which is installed with the assembly whole is formed in the bottom wall of the water return area (11).

6. The cleaning machine of claim 2, wherein: the water tank body (1) is square, the backwater area (11) is oval and is arranged along the diagonal of the water tank body (1), the first end of the backwater area (11) is close to the first corner of the water tank body (1) and is arranged, the second end corresponds to the middle of the water tank body (1), the water pumping mechanism (2) is close to the second end of the backwater area (11) and is arranged centrally relative to the bottom of the water tank body (1), and the slag collecting basket (4) is located between the water pumping mechanism (2) and the first corner of the water tank body (1).

7. The cleaning machine according to any one of claims 1 to 6, wherein: the water pumping mechanism (2) comprises

The water sucking port (201) is formed in the bottom of the pump shell (21);

the space guide vane (22) is arranged in the pump shell (21) and divides the inner cavity of the pump shell (21) into an upper cavity (211) and a lower cavity (212) which are relatively independent, and is used for inputting water in the lower cavity (212) into the upper cavity (211) after being circumferentially dispersed and outputting the water upwards from an axial direction through the water outlet (202);

the impeller (23) is rotatably arranged in the lower cavity (212) and is used for sucking water in the water return area (11) into the lower cavity (212) and conveying the water upwards; and

and the driving piece (24) is arranged outside the water tank body (1) and is used for providing power for the rotation of the impeller (23).

8. The cleaning machine of claim 7, wherein: the space guide vane (22) comprises a cover plate (221) and guide vanes (222), the cover plate (221) is transversely arranged in the middle of the pump shell (21) and divides the inner cavity of the pump shell (21) into an upper cavity (211) and a lower cavity (212) which are relatively independent, the water outlet (202) is communicated with the upper cavity (211), the guide vanes (222) are arranged on the lower surface of the cover plate (221) in a plurality of vertical directions, the guide vanes (222) cover the circumferential area of the cover plate (221) and are distributed at intervals along the circumferential direction, the guide vanes (222) extend from the edge of the cover plate (221) inwards and spirally against the water flow direction, guide flow channels (223) are restrained between two adjacent guide vanes (222), and at least partial loss of the cover plate (221) corresponding to the top of the guide vanes (222) forms notches (224) for the guide flow channels (223) to be communicated with the upper cavity (211).

9. The cleaning machine of claim 8, wherein: the impeller (23) is a centrifugal impeller (23), the bottom is provided with an inlet which is arranged corresponding to the water suction port (201), and the side is provided with an outlet which is arranged corresponding to the guide vane (222).

10. The cleaning machine of claim 8, wherein: the outer ends of the guide vanes (222) are close to the inner peripheral wall of the pump shell (21), the outer ends of the guide vanes are close to the edge of the impeller (23), in the two guide vanes (222) which are adjacently arranged, the outer end part of the first guide vane (222) and the inner end arrangement part of the second guide vane (222) are arranged in a staggered mode so as to enclose the guide flow channel (223), and the cover plate (221) is in a range from the outer end of the corresponding first guide vane (222) to the outer end of the second guide vane (222) so as to form the notch (224).

11. The cleaning machine of claim 8, wherein: the upper surface of the cover plate (221) is provided with a converging blade (225) which extends from the edge to the middle in a spiral manner and is used for converging water conveyed by the notch (224) to the water outlet (202).

12. The cleaning machine of claim 7, wherein: still include closing cap (5), elastic component (6), in upper cavity (211) of locating pump case (21) with upper and lower removal in closing cap (5), be used for opening or seal delivery port (202), elastic component (6) are located on space stator (22), are made closing cap (5) remain the trend of upwards moving all the time, the bottom of spray arm (3) is provided with water inlet sleeve (31), and the lower extreme of this water inlet sleeve (31) is provided with can pass delivery port (202) and support leg (32) that push down and remove in closing cap (5), water inlet sleeve (31) are connected at the top of pump case (21) through detachable locking structure.

13. The cleaning machine of claim 12, wherein: under the assembled state of the spray arm (3) and the water pumping mechanism (2), the bottom edge of the water inlet sleeve (31) is propped against the top wall of the pump shell (21) and is arranged around the periphery of the water outlet (202), the lower ends of the support legs (32) are propped against the upper surface of the sealing cover (5), and the elastic piece (6) is in a compressed state.

14. The cleaning machine of claim 12, wherein: the support leg (32) comprises at least two support ribs (321) extending downwards from the inner edge of the lower end of the water inlet sleeve (31), the support ribs (321) are arranged at intervals in the circumferential direction of the water inlet sleeve (31), and the lower end of the support rib (321) is connected with an inverted U-shaped guide piece (322) which is arranged at the central position of the corresponding water inlet sleeve (31) and is arched upwards.

15. The cleaning machine of claim 12, wherein: the space guide vane (22) is arranged in the upper cavity (211), extends from the edge of the upper cavity (211) to the middle in a spiral manner, is used for converging water conveyed by the lower cavity (212) to the water outlet (202), and is provided with a collecting blade (225), the inner ends of the collecting blades (225) jointly enclose a containing cavity (226) for containing the sealing cover (5) and the elastic piece (6), the sealing cover (5) can be arranged in the containing cavity (226) in an up-and-down moving manner, and the elastic piece (6) is elastically compressed below the sealing cover (5).

16. The cleaning machine of claim 15, wherein: the edge of the sealing cover (5) is provided with a plurality of spacing openings (51) which are arranged at intervals, and the inner ends of the converging blades (225) extend into the spacing openings (51) to be matched with the spacing openings (51) in an up-and-down guiding way.

17. The cleaning machine of claim 16, wherein: the sealing cover (5) is provided with a top wall which is horizontally arranged and a diversion inclined wall (52) which extends outwards and downwards along the radial direction from the edge of the top wall, the limiting opening (51) is formed in the diversion inclined wall (52), and the upper surface of the top wall of the sealing cover (5) forms a bearing surface which is used for being matched with the supporting legs (32).

18. The cleaning machine of claim 15, wherein: the bottom wall of the accommodating cavity (226) is provided with a first limiting part (2261) extending upwards, correspondingly, the lower surface of the sealing cover (5) is provided with a second limiting part (53) extending downwards, the elastic piece (6) is a spring, the lower end of the spring is sleeved on the periphery of the first limiting part (2261), and the upper end of the spring is sleeved on the periphery of the second limiting part (53).

19. The cleaning machine of claim 12, wherein: the locking structure comprises a clamping ring (7), wherein an assembling sleeve (71) which can be sleeved on the periphery of the water inlet sleeve (31) and is in locking connection with the water inlet sleeve (31) is arranged in the middle of the clamping ring (7), and the outer edge of the clamping ring (7) is in locking connection with the outer peripheral wall of the pump shell (21) exposed on the filter plate (12) through a fastening structure.

20. The cleaning machine according to any one of claims 1 to 6, wherein: the upper surface of the water pumping mechanism (2) gradually inclines downwards from the center to the edge so as to form a diversion surface (210) which can be used as a common water tank.

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