CN113143151B

CN113143151B - Cleaning machine

Info

Publication number: CN113143151B
Application number: CN202010074899.7A
Authority: CN
Inventors: 韩健健; 黎子兵; 郑峰; 徐慧
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2023-11-17
Anticipated expiration: 2040-01-22
Also published as: CN113143151A

Abstract

The application relates to a cleaning machine, which comprises a water tank body and a water pumping mechanism, wherein the bottom of the water tank body is provided with a concave draining area, the top of the draining area is covered with a draining plate, and the water pumping mechanism is used for pumping water in the draining area to the position above the draining plate, and is characterized in that: the draining board is provided with an air outlet for discharging air from the draining area to the upper part of the draining board, and the air outlet is provided with an air outlet cover with a small upper port and a big lower port. In the washing process of the cleaning machine, the water level at the bottom of the water tank body is generally above the draining plate, so that air cannot be discharged once entering a draining area and then enters the spray arm, and the water pumping lift is influenced.

Description

Cleaning machine

Technical Field

The application relates to the technical field of kitchen appliances, in particular to a cleaning machine for cleaning bowls, dishes and fruits and vegetables.

Background

With the increasing level of living of people, dish washers are increasingly entering home as household electrical appliances for kitchen use. The existing dish-washing machines on the market are generally divided into three types of a desk type dish-washing machine, a cabinet type dish-washing machine and a trough type dish-washing machine, wherein the desk type dish-washing machine is of an integral independent structure and is generally placed on a desk for use; the cabinet type dish washer is also an independent structure, but needs to be embedded into a kitchen cabinet for use; the tub dishwasher is combined with a tub and is generally installed in a kitchen cabinet.

The structure of the sink type cleaning machine on the market at present is mainly the structure mentioned in the prior application CN201310750968.1 of the inventor, and comprises a box body forming a washing space, wherein the box body comprises a sink body and a cover plate rotatably connected to the sink body, the bottom of the sink body is provided with a concave draining area at least at the central part, a water pump for discharging a water pump in the draining area to the washing space above the draining area is arranged in the draining area, the draining area is covered with a draining plate with draining holes, and a rotary spray arm which is in fluid communication with the water pump and provided with water outlet holes is arranged above the draining plate. In addition, in order to further improve the cleaning effect, the inventors of the present application have previously applied CN201810334714.4, CN201810334713.X "tank structure of sink type cleaning machine", on the basis of the above-mentioned structure, provided with a heating plate capable of heating water in the water draining area at the bottom of the sink body; in order to facilitate slag discharge, a slag basket which is arranged corresponding to the water discharge opening is arranged at the bottom of the water discharge area.

The water pump, the water outlet, the heating plate and other functional components of the water tank body are respectively and independently distributed at the bottom of the water tank body, so that the water tank is difficult to install and maintain, and the water leakage risk is increased. In addition, the draining area at the bottom of the water tank type cleaning machine is designed into a non-circular special-shaped structure due to the limitation of the installation position of each functional part at the bottom of the box body, the local water level of the draining area drops faster due to the influence of the water absorption position of the water pump in the cleaning process, and the area with the faster water level drops easily has air to enter the spray arm along with the water pump, so that the pumping lift and the cleaning effect are seriously influenced.

Disclosure of Invention

The first technical problem to be solved by the application is to provide a cleaning machine which is convenient for integrating and installing all functional components so as to reduce the difficulty of installation and maintenance and the risk of water leakage.

The second technical problem to be solved by the application is to provide a cleaning machine which stabilizes the water absorption rate of each part of a draining area so as to avoid air from being fed into the draining area and maintain higher water pumping lift and cleaning effect.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a cleaning machine, includes basin body and pump water mechanism, the bottom of basin body has the waterlogging caused by excessive rainfall region of indent, and this waterlogging caused by excessive rainfall region's top covers has the waterlogging caused by excessive rainfall board, pump water mechanism is arranged in with the water pump in the waterlogging caused by excessive rainfall region to the waterlogging caused by excessive rainfall board top, its characterized in that: the draining board is provided with an air outlet for air to be discharged from the draining area to the upper part of the draining board, an air discharging cover is arranged at the air outlet, and the main body part of the air discharging cover is shaped into an inverted cone bucket structure with a small upper port and a large lower port.

In the above scheme, pump water mechanism includes spray arm, motor and impeller subassembly, the spray arm is located in the basin body and is located the waterlogging caused by excessive rainfall board top, it has the water inlet that corresponds the regional central part of waterlogging caused by excessive rainfall to open on the lower wall of spray arm, the motor is located on the outer diapire of basin body and the vertical spout arm water inlet that stretches into of basin body diapire of output shaft upper end, impeller subassembly locates on the motor output shaft and upper portion is located in the spray arm water inlet, lower part is located the central part in waterlogging caused by excessive rainfall region. The upper part of the impeller assembly is a centrifugal impeller and is used for dispersing water entering the spray arm and spraying the water from the water spraying holes, and the lower part of the impeller assembly is an axial flow impeller and is used for upwards drawing water in a draining area so that the water rapidly enters the spray arm. The water inlet of the water pumping mechanism is positioned at the central part of the cylindrical water draining area, so that the water absorbing flow field in the water draining area is uniform, the water absorbing rate of each part of the water draining area is uniform and stable, the problem that the local water level drops too quickly is avoided, the problem that air needs to be supplemented into the part of the water draining area is avoided, and the water pumping mechanism is beneficial to keeping higher water pumping lift and washing effect.

Preferably, the bottom of the motor is provided with a water storage cavity, the lower end of the motor output shaft stretches into the water storage cavity and is connected with a drainage impeller capable of rotating along with the water storage cavity, the water storage cavity is communicated with a water outlet, and the water storage cavity is also provided with a water outlet for supplying water and discharging from the water storage cavity. After the cleaning machine is washed, the motor is reversed, water in the washing cavity is sucked into the water storage cavity through the water drainage impeller, and the water drainage impeller is of a centrifugal structure, so that waste water can be discharged from a water outlet on the side part of the water storage cavity, and the spray arm is rotated to wash and drain by utilizing one power mechanism, so that the integral structure is simplified.

Preferably, a drain pipe is connected to the water outlet, and a one-way valve which only allows water to drain from the water storage cavity is arranged on the drain pipe. The one-way valve can improve the stability of water flow when the motor is switched in forward and reverse directions.

As an improvement, the water outlet is positioned at the side part of the water storage cavity, the water drain pipe comprises a first part and a second part, the first part is horizontally arranged, the first end of the first part is connected with the water outlet, the second part is of an inverted U-shaped structure, the first end of the second part is connected with the second end of the first part, and the second end of the second part is lower than the water outlet. Because the application cancels the structures of the forced drainage pump, the traction valve and the like, the drainage pipe adopting the structure can form siphon drainage effect, and has low cost and good drainage effect.

Preferably, the drain pipe further comprises an L-shaped third portion connected between the first portion and the second portion, a vertical edge end of the L-shaped structure of the third portion being connected to the second end of the first portion, and a lateral edge end of the L-shaped structure of the third portion being connected to the first end of the second portion. The structure is favorable for strengthening the siphon drainage effect.

Preferably, the lower part of the exhaust cover is provided with a conical cylindrical first air guide part with a small upper end and a large lower end, the lower port of the first air guide part is connected with the exhaust port, and the upper part of the exhaust cover is provided with a second air guide part with an inner diameter which is consistent with the upper port of the first air guide part and extends vertically, and the lower end of the second air guide part is connected with the upper end of the first air guide part. Because the water level of the bottom of the water tank body is generally above the draining plate in the washing process of the washing machine, air cannot be discharged once entering the draining area and then enters the spray arm, and the pumping head is influenced.

Preferably, the cavity of the draining area is cylindrical, and the water inlet of the water pumping mechanism is positioned at the central part of the draining area.

In each of the above-mentioned schemes, the bottom wall of the water tank body below the corresponding draining area is at least partially missing to form a mounting opening, a bottom plate covering the mounting opening is arranged at the mounting opening, and the water pumping mechanism is mounted on the bottom plate. According to the application, the functional parts of the cleaning machine are integrated on the bottom plate, and the bottom plate is arranged at the mounting opening at the bottom of the water tank body to form the bottom of the washing cavity, so that a plurality of mounting openings for mounting different functional parts are not required to be arranged on the water tank body, the mounting and maintenance difficulty is reduced, and as only one mounting opening is required to be arranged at the bottom of the water tank body, the water leakage risk is greatly reduced.

Preferably, the pumping mechanism is installed at the central part of the bottom plate, and a heating plate capable of heating water in the draining area is further arranged on the bottom plate, and the heating plate is arc-shaped and is arranged on the bottom plate around the periphery of the pumping mechanism. The heating plate is adopted to heat the washing water, so that the cleaning effect is improved, and the heating plate is arranged on the bottom plate, so that the assembly and the later maintenance are facilitated.

Compared with the prior art, the application has the advantages that: in the washing process of the cleaning machine, the water level at the bottom of the water tank body is generally above the draining plate, so that air cannot be discharged once entering a draining area and then enters the spray arm, and the water pumping lift is influenced.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present application;

FIG. 2 is a schematic view of another embodiment of the present application;

FIG. 3 is a cross-sectional view of an embodiment of the present application;

FIG. 4 is an enlarged view of a portion of the structure of FIG. 3;

FIG. 5 is a schematic diagram of an assembly structure of a functional component and a base plate according to an embodiment of the present application;

FIG. 6 is a schematic view of the structure of FIG. 5 at another angle;

FIG. 7 is a schematic view of a bottom plate according to an embodiment of the present application;

FIG. 8 is a schematic view of a structure of a water tank body according to an embodiment of the present application;

FIG. 9 is a schematic diagram of an assembly structure of a sump body and a bottom plate according to an embodiment of the application;

FIG. 10 is a schematic view illustrating a hidden spray arm according to an embodiment of the present application;

fig. 11 is a schematic diagram illustrating an assembly structure of an exhaust cover and a drain board according to an embodiment of the present application.

Detailed Description

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

As shown in fig. 1 to 11, the cleaning machine of the embodiment includes a water tank body 1 and a water pumping mechanism 2, a washing cavity 11 is formed in the water tank body 1, a recessed draining area 12 is formed at the bottom of the water tank body 1, a draining plate 13 is covered at the top of the draining area 12, draining holes are densely distributed on the draining plate 13, water on the draining plate 13 can enter the draining area 12 through the draining holes, and the water pumping mechanism 2 is used for pumping water in the draining area 12 into the washing cavity 11 above the draining plate 13.

In this embodiment, as shown in fig. 8, the bottom wall of the water tank body 1 corresponding to the lower part of the draining area 12 is at least partially missing to form an installation opening 14, a bottom plate 3 covering the installation opening 14 is provided at the installation opening 14, the water pumping mechanism 2 is installed on the bottom plate 3, and a water outlet 31 is provided on the bottom plate 3. The heating plate 4 capable of heating the water in the draining area 12 is further arranged on the bottom plate 3, the heating plate 4 is used for heating the washing water, the cleaning effect is improved, and the heating plate 4 is arranged on the bottom plate 3, so that the assembly and the later maintenance are facilitated.

As shown in fig. 4, the cavity of the draining area 12 of the present embodiment is cylindrical, the bottom plate 3 is located at the center of the bottom of the draining area 12 and is circular, the pumping mechanism 2 is installed at the center of the circular bottom plate 3 and has a water inlet 20 corresponding to the center of the draining area 12, the heating plate 4 is arc-shaped and is arranged on the bottom plate 3 around the periphery of the pumping mechanism 2, and the water outlet 31 is located beside the pumping mechanism 2. By adopting the arrangement mode, the washing water can be heated conveniently and drained quickly; meanwhile, the functional components such as the water pumping mechanism 2, the heating plate 4 and the like are integrally arranged on the bottom plate 3, so that an installation opening is not required to be formed in the water tank body 1, during assembly, each functional component can be firstly arranged on the bottom plate 3, then the bottom plate 3 is fixed at the bottom of the water tank body 1, the installation and the assembly are convenient, and in addition, the inspection and the repair of all the functional components can be realized only by taking down the bottom plate 3 during maintenance, so that the assembly is very convenient.

As shown in fig. 4, the draining board 13 is circular, the central portion is provided with an opening 131 for water supply to drain from bottom to top, the upper wall surface of the draining board 13 is gradually inclined downwards from the edge to the central portion, the draining board 13 is provided with a slag collecting basket 5 positioned beside the opening 131, the upper edge of the slag collecting basket 5 is arranged on the draining board 13, and the lower portion of the slag collecting basket 5 is positioned in the draining area 12. In the prior art, due to the limitation of the installation positions of all functional parts on the bottom wall of the water tank body 1, the water draining plate 13 needs to be made into a special-shaped structure, so that the water flow direction above the water draining plate 13 is disturbed when entering the lower part of the water draining plate 13, the water flow fluctuation is increased to a certain extent, the gas-liquid exchange near the water draining area 12 is severe, a large number of bubbles are caused to enter the spray arm along with the water draining area, and the water flow lift and the cleaning effect are affected; in this embodiment, since each functional component is integrated on the bottom plate 3, only one mounting opening 14 is formed on the bottom wall of the water tank body 1, the draining board 13 can be made into a round shape, and water flows on the draining board 13 from the edge to the central part, which is beneficial to improving the stability of the flowing direction of the water flow, reducing the fluctuation of the water flow, and thus maintaining high water flow lift and good cleaning effect.

The slag collecting basket 5 of the embodiment is arc-shaped, the inner edge of the slag collecting basket is arranged close to the opening 131, and the inclination of the part 130 of the draining plate 13 outside the slag collecting basket 5 is larger than that of the other parts of the draining plate 13. Due to the adoption of the structure of the draining board 13, the flowing trend of water flow on the draining board 13 is from the edge to the central position, after the slag collecting basket 5 with the structure is adopted, the slag collecting basket 5 is positioned on the loop line of the draining board 13, so that the slag collecting effect is improved, food residues are prevented from drifting away due to water flow disorder, and the inner wall of the slag collecting basket 5 can be flushed by the water flowing along the radial direction on the draining board 13, so that a large amount of food residues are prevented from being accumulated on the side wall of the slag collecting basket 5, and the slag collecting basket 5 is kept relatively clean.

In this embodiment, the water pumping mechanism 2 includes a spray arm 21, a motor 22 and an impeller assembly 23, the spray arm 21 is disposed in the washing chamber 11 and located above the draining board 13, a water inlet 211 is formed on a lower wall surface of the spray arm 21, a plurality of water spraying holes 212 are formed on an upper wall surface of the spray arm 21 at intervals, the water inlet 211 is arranged corresponding to an opening 131 on the draining board 13, the motor 22 is disposed on an outer bottom wall of the bottom plate 3, an upper end of an output shaft 221 vertically penetrates through the bottom plate 3 and extends into the water inlet 211 of the spray arm 21, and the impeller assembly 23 is disposed on the output shaft 221 of the motor 22, and the upper portion is located in the water inlet 211 of the spray arm 21 and the lower portion is located in the draining area 12. The impeller assembly 23 has a centrifugal impeller 231 at an upper portion thereof for dispersing water entering the spray arm 21 and spraying the water from the spray holes 212, and an axial impeller 232 at a lower portion thereof for drawing water in the draining area 12 upward to allow the water to quickly enter the spray arm 21. The upper wall surface of the bottom plate 3 is provided with a guide seat 6 which is vertically arranged, the upper end of the guide seat 6 passes through an opening 131 on the draining plate 13 and is positioned above the draining plate 13, the water inlet 20 of the water pumping mechanism 2 is positioned at the side part of the guide seat 6, the water inlets 20 are three and are circumferentially arranged at intervals along the guide seat 6, the spray arm 21 can be rotatably arranged at the upper end of the guide seat 6, and the specific connection structure of the spray arm 21 and the guide seat 6 is the same as the connection structure in the water tank type cleaning machine of the inventor, and details are omitted.

As shown in fig. 10 and 11, the draining board 13 of this embodiment is provided with an air outlet 132 for discharging air from the draining area 12 to the upper side of the draining board 13, and an air outlet cover 17 is mounted at the air outlet 132, and the main body of the air outlet cover 17 is formed into an inverted cone bucket structure with a small upper port and a large lower port. The lower part of the exhaust cover 17 has a tapered cylindrical first air guide portion 171 with a small upper end and a large lower end, the lower end of the first air guide portion 171 is connected to an exhaust port 172, the upper part of the exhaust cover 17 has a second air guide portion 172 with an inner diameter conforming to the upper end of the first air guide portion 171 and extending vertically, and the lower end of the second air guide portion 172 is connected to the upper end of the first air guide portion 171. Because the water level at the bottom of the water tank body 1 is generally above the draining plate 13 in the washing process of the washing machine, air cannot be discharged once entering the draining area 12 and then enters the spray arm 21, the pump water lift is affected, and bubbles in the draining area 12 can be discharged in time by arranging the exhaust cover 17, so that the higher lift and the pumping effect of the water pump are maintained.

As shown in fig. 7 to 9, an assembling side 32 having an inverted U-shaped structure is formed at the edge of the bottom plate 3, the assembling side 32 is placed on the bottom wall of the water tank body 1 near the upper edge of the mounting opening 14, and a mounting space 321 for mounting a seal ring is formed between the inverted U-shaped structure of the assembling side 32 and the bottom wall of the water tank body 1. By adopting the assembly mode, the assembly is convenient, the tightness between the bottom plate 3 and the water tank body 1 is improved, and water leakage is prevented. The U-shaped structure of the outer edge of the bottom plate 3 and the bending part 33 formed at the joint of the main body part of the bottom plate 3 are provided with a supporting edge 15 extending into the mounting opening 14 on the outer bottom wall of the water tank body 1, and the bending part 33 is supported on the supporting edge 15. The part of the bottom wall of the water tank body 1 corresponding to the draining area 12 is recessed downwards in a stepped manner from outside to inside, the cross section of the recessed part is shaped into a Z-shaped structure 16, the U-shaped assembling edge 32 of the bottom plate 3 is arranged on the transverse part 161 at the bottom of the Z-shaped structure 16, the upper wall surface of the assembling edge 32 is not higher than the top wall of the Z-shaped structure 16, and the structure is favorable for avoiding the local accumulation of finely divided residues during drainage.

In this embodiment, as shown in fig. 4, a water storage cavity 222 is provided at the bottom of the motor 22, the lower end of the output shaft 221 of the motor 22 extends into the water storage cavity 222 and is connected with a rotatable water discharge impeller 7, the water storage cavity 222 is communicated with the water discharge port 31 through a water guide pipe 71, and a water outlet 2221 for supplying water and discharging water from the water storage cavity 222 is provided at the side of the water storage cavity 222. The output shaft 221 of the motor 22 in this embodiment can rotate in the forward and reverse directions, when the motor output shaft 221 rotates in the forward and reverse directions, the impeller assembly 23 can pump water in the draining area 12 into the spray arm 21, and when the motor output shaft 221 rotates in the reverse direction, the water in the draining area 12 can be drained through the water guide pipe 71 and the water storage cavity 222 by the drainage impeller 7, so that the spray arm 21 can rotate to wash and drain by using one power mechanism, and the overall structure is simplified.

As shown in fig. 2, the water outlet 2221 is connected to a water discharge pipe 8, and the water discharge pipe 8 is provided with a check valve 80 for allowing only water to be discharged from the water storage chamber 222. The water outlet 2221 is located at the side of the water storage cavity 222, the drain pipe 8 includes a first portion 81, a second portion 82 and a third portion 83, the first portion 81 is horizontally arranged with its first end connected with the water outlet 2221, the second portion 82 is in an inverted U-shaped structure, the third portion 83 is in an L-shape and connected between the first portion 81 and the second portion 82, the vertical edge end of the third portion 83L-shaped structure is connected with the second end of the first portion 81, the horizontal edge end of the third portion 83L-shaped structure is connected with the first end of the second portion 82, and the second end of the second portion 82 is lower than the water outlet 2221. The drain pipe 8 with the structure can form siphon drainage effect, and has low cost and good drainage effect.

When the cleaning machine of the embodiment is used for cleaning, the motor 22 rotates positively to drive the impeller assembly 23 and the spray arm 21 to rotate, the lower drainage impeller 7 rotates in the water storage cavity 222 due to the communication of the cavities, and the water storage cavity 222 is filled with water; when the washing is finished and the water is discharged, the motor 22 is reversed to drive the water discharge impeller 7 to rotate, and the water flow is discharged through the one-way valve 80 and the water discharge pipe 8. The difference of water flow states of the motor 22 in forward and reverse rotation can be optimized, so that a sealing cavity can be formed by matching the check valve 80 in forward rotation, a certain negative pressure suction force can be generated, and the sealing effect of the check valve 80 is enhanced; when the motor 22 rotates forward, the hanging structure of the drain pipe 8 is designed in consideration of the fact that the tightness of the check valve 80 is not necessarily reliable, the water flow sealing at the position of the check valve 80 is promoted by utilizing certain water flow pressure, and when the motor 22 rotates reversely and is discharged strongly, the hanging structure can effectively form siphonage, so that the water draining effect and the water draining strength are greatly promoted.

In this embodiment, all functional components of the cleaning machine are integrated on the bottom plate 3, and the bottom plate 3 is installed at the installation opening 14 at the bottom of the water tank body 1 to form the bottom of the washing cavity 11, so that a plurality of assembly openings for installing different functional components do not need to be formed on the water tank body 1, the installation and maintenance difficulty is reduced, and as only one installation opening 14 needs to be formed at the bottom of the water tank body 1, the water leakage risk is greatly reduced. The draining area 12 is set to be cylindrical, the water pumping mechanism 2 is arranged at the bottom of the water tank body 1 and is provided with the water inlet 20 corresponding to the central part of the draining area 12, the water inlet 20 is arranged at the central part of the cylindrical draining area 12, so that the water absorption flow field in the draining area 12 is uniform, the water absorption rate of the draining area 12 is uniform and stable, the problem that the local water level drops too fast is avoided, the problem that air needs to be supplemented locally in the draining area is avoided, and the higher water pumping lift and the washing effect are kept.

Claims

1. The utility model provides a cleaning machine, includes basin body (1) and pump mechanism (2), the bottom of basin body (1) has recessed waterlogging caused by excessive rainfall area (12), and the top of this waterlogging caused by excessive rainfall area (12) is covered with waterlogging caused by excessive rainfall board (13), pump mechanism (2) are arranged in with the water pump in waterlogging caused by excessive rainfall area (12) to waterlogging caused by excessive rainfall board (13) top, its characterized in that: an air outlet (132) for discharging air from the draining area (12) to the upper part of the draining plate (13) is formed in the draining plate (13), an air outlet cover (17) is arranged at the air outlet (132), and the main body part of the air outlet cover (17) is formed into an inverted cone bucket structure with a small upper port and a large lower port;

the water tank is characterized in that a mounting opening (14) is formed by at least partially deleting the bottom wall of the water tank body (1) corresponding to the lower part of the water draining area (12), a bottom plate (3) covering the mounting opening (14) is arranged at the mounting opening (14), and a heating plate (4) capable of heating water in the water draining area (12) is further arranged on the bottom plate (3); the water pumping mechanism (2) and the heating disc (4) are integrally arranged on the bottom plate (3), and when the water pumping mechanism is assembled, the water pumping mechanism (2) and the heating disc (4) are firstly arranged on the bottom plate (3), and then the bottom plate (3) is fixed at the bottom of the water tank body (1);

the cavity of the draining area (12) is cylindrical, the bottom plate (3) is positioned at the center of the bottom of the draining area (12) and is circular, the water pumping mechanism (2) is arranged at the center of the circular bottom plate (3) and is provided with a water inlet (20) corresponding to the center of the draining area (12), the heating plate (4) is arc-shaped and is arranged on the bottom plate (3) around the periphery of the water pumping mechanism (2), and the bottom plate is provided with a water outlet (31) positioned beside the water pumping mechanism (2);

the draining board (13) is circular, an opening (131) for water supply to drain from bottom to top is formed in the central portion of the draining board, a slag collecting basket (5) located beside the opening (131) is arranged on the draining board (13), the slag collecting basket (5) is arc-shaped and located on a loop line of the draining board (13), and the inner edge of the slag collecting basket (5) is close to the opening (131).

2. The cleaning machine of claim 1, wherein: the water pumping mechanism (2) comprises a spray arm (21), a motor (22) and an impeller assembly (23), wherein the spray arm (21) is arranged in the water tank body (1) and is positioned above the draining plate (13), a water inlet (211) corresponding to the central part of the draining area is formed in the lower wall surface of the spray arm (21), the motor (22) is arranged on the outer bottom wall of the water tank body (1), the upper end of an output shaft (221) vertically penetrates through the bottom wall of the water tank body and extends into the water inlet (211) of the spray arm (21), and the impeller assembly (23) is arranged on the output shaft (221) of the motor (22) and is positioned at the central part of the water inlet (211) and the lower part of the draining area (12) of the spray arm (21).

3. The cleaning machine of claim 2, wherein: the water storage device is characterized in that a water storage cavity (222) is formed in the bottom of the motor (22), the lower end of an output shaft (221) of the motor (22) stretches into the water storage cavity (222) and is connected with a water drainage impeller (7) capable of rotating along with the water storage cavity, the water storage cavity (222) is communicated with a water outlet (31) in the bottom of a water draining area, and the water storage cavity (222) is further provided with a water outlet (2221) for supplying water and discharging from the water storage cavity (222).

4. A cleaning machine as claimed in claim 3, wherein: the water outlet (2221) is connected with a water drain pipe (8), and the water drain pipe (8) is provided with a one-way valve (81) which only allows water to drain from the water storage cavity.

5. The cleaning machine of claim 4, wherein: the water outlet (2221) is located the lateral part of water storage chamber (222), drain pipe (8) include first part (81) and second part (82), its first end of first part (81) horizontal arrangement is connected with delivery port (2221), second part (82) are the U-shaped structure of inversion, just the first end of second part (82) is connected with the second end of first part (81), the second end of second part (82) is less than delivery port (2221) and arranges.

6. The cleaning machine of claim 5, wherein: the drain pipe (8) further comprises an L-shaped third part (83), the third part (83) is connected between the first part (81) and the second part (82), the vertical edge end part of the L-shaped third part (83) is connected with the second end of the first part (81), and the horizontal edge end part of the L-shaped third part (83) is connected with the first end of the second part (82).

7. The cleaning machine of any one of claims 1-6, wherein: the main body part of the exhaust cover (17) is a first air guide part (171) with a small upper end and a large lower end, the lower port of the first air guide part (171) is connected with the exhaust port (132), the upper part of the exhaust cover (17) is provided with a second air guide part (172) with an inner diameter which is consistent with the upper port of the first air guide part (171) and extends vertically, and the lower end of the second air guide part (172) is connected with the upper end of the first air guide part (171).

8. The cleaning machine of any one of claims 1-6, wherein: the cavity of the draining area (12) is cylindrical, and the water inlet (20) of the water pumping mechanism (2) is positioned at the central part of the draining area (12).