CN109973421B - Water pump impeller for cleaning machine and application thereof - Google Patents

Water pump impeller for cleaning machine and application thereof Download PDF

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Publication number
CN109973421B
CN109973421B CN201711460190.5A CN201711460190A CN109973421B CN 109973421 B CN109973421 B CN 109973421B CN 201711460190 A CN201711460190 A CN 201711460190A CN 109973421 B CN109973421 B CN 109973421B
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China
Prior art keywords
impeller
water pump
water
spray arm
blades
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CN201711460190.5A
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Chinese (zh)
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CN109973421A (en
Inventor
徐慧
郑峰
顾洪良
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Ningbo Fotile Kitchen Ware Co Ltd
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Ningbo Fotile Kitchen Ware Co Ltd
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Priority to CN201711460190.5A priority Critical patent/CN109973421B/en
Publication of CN109973421A publication Critical patent/CN109973421A/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2261Rotors specially for centrifugal pumps with special measures
    • F04D29/2277Rotors specially for centrifugal pumps with special measures for increasing NPSH or dealing with liquids near boiling-point
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47JKITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J43/00Implements for preparing or holding food, not provided for in other groups of this subclass
    • A47J43/24Devices for washing vegetables or the like
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/14Washing or rinsing machines for crockery or tableware with stationary crockery baskets and spraying devices within the cleaning chamber
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4278Nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/181Axial flow rotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/185Rotors consisting of a plurality of wheels
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2205Conventional flow pattern
    • F04D29/2222Construction and assembly
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/2261Rotors specially for centrifugal pumps with special measures
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00Details, component parts, or accessories
    • F04D29/18Rotors
    • F04D29/22Rotors specially for centrifugal pumps
    • F04D29/24Vanes

Abstract

The invention relates to a water pump impeller for a cleaning machine, which comprises a second impeller and a first impeller, wherein the second impeller can disperse fluid at a first end along the radial direction, the first impeller can suck the fluid in the axial direction, and the first impeller and the second impeller are coaxially arranged; the second impeller comprises a second central shaft and at least two second blades which are arranged on the periphery of the second central shaft at intervals, the outer diameter of the second central shaft is gradually increased along the flowing direction of the fluid to form an end cover, and at least part of edges of the second blades are connected to the inner end face of the end cover. Because the first impeller is axial, the relative flow velocity of water flow at the outer edge of the first impeller is the maximum, cavitation bubbles can be generated at the outer edge of the first impeller at first, when the water flow reaches the second impeller, liquid close to the central shaft of the second impeller compresses the cavitation bubbles at the outer edge under the action of centrifugal force, so that the liquid can only move close to the outer edge along the axial direction, and the cavitation bubbles collapse in a high-pressure area formed at the upper end of the second impeller, thereby greatly limiting the development of the cavitation bubbles, improving the flow and the lift of a pump, and further improving the cleaning effect.

Description

Water pump impeller for cleaning machine and application thereof
Technical Field
The invention relates to a water pump impeller for a cleaning machine, in particular to a water pump impeller which can be used in a cleaning machine for bowls, dishes, fruits, vegetables and the like to improve the cleaning effect.
Background
Before the water pump works, the water pump and the water inlet pipe must be filled with water, then the liquid obtains energy under the action of inertial centrifugal force by means of the impeller rotating at high speed, so that the internal pressure of the liquid can be increased, when the impeller rotates fast, the first blade promotes the water to rotate fast, the liquid flies out of the impeller under the action of the centrifugal force, after the water in the water pump is thrown out, the central part of the impeller forms a vacuum area, then the water in a water source enters the water inlet pipe under the action of atmospheric pressure (or water pressure), and continuous water pumping can be realized after circulation is inexhaustible. The water pump has the advantages of simple structure, easy operation, easy flow regulation, suitability for conveying various materials with special properties and the like, and is widely applied to various fields, such as various industrial places, and various household appliances, such as washing machines, dish washing machines, air conditioners and the like.
In a traditional water pump, an impeller is generally positioned in a closed cavity, so that the structure is complex, and the processing requirement is high. European patent publication EP0807396a2 discloses a dishwasher using an open water pump, which includes a washing chamber for receiving dishes, a spray arm supported at the bottom of the washing chamber, and a pump for pumping out washing liquid to pressurize the spray arm, the pump including an impeller having an inner surface defining a housing for the impeller to allow the washing liquid to be transferred from the housing to a nozzle of the spray arm, the impeller including a first blade bent forward at a lower edge, the bottom of the first blade having a first blade portion of axial flow, the first blade portion of axial flow lifting up the fluid after a start-up of a driving motor under no load, thereby allowing the pump to operate normally. However, in the impeller, the lower section of the first blade is short, the first blade needs to be at a high water level when the first blade draws water in a rotating manner, the water outlet channel is short, foam formed on the surface of the cleaning water such as cleaning solution and food residue is easily drawn into the impeller again, normal water drawing is affected, the amount of drawn water is small, and the flow speed is low, so that normal spraying operation of the rotary spray arm is affected.
In order to solve the above problems, chinese patent application No. CN104235061B, an open water pump (application No. CN201310750285.6), discloses a structure including an upper housing, a lower housing, and an impeller, where the impeller includes a central shaft and a plurality of axially extending first blades uniformly distributed on a circumferential surface of the shaft in a circumferential direction, the first blades are axially divided into an upper section and a lower section connected to each other, an upper housing cavity for housing the upper section of the first blades is formed in the upper housing, a lower housing cavity for housing the lower section of the first blades is formed in the lower housing, a water inlet of the water pump is located below and at a side surface of the lower housing, a water outlet is located at a side surface of the upper housing, at least a bottom of the lower section of the first blades is gradually and smoothly bent on the circumferential surface of the shaft in a rotation direction of the impeller, and a height ratio of the lower section to the upper section of the first blades is 1-5. The impeller can draw water at a low water level, is not easy to cause bubbles formed by cleaning solution or food residues on the water surface to be drawn into the impeller to influence the water drawing, and can draw enough flow from the water inlet. However, since the first blades for the axial pumping and the centrifugal dispersion are integrally formed and the first blade portion for the axial pumping is short, when cavitation bubbles carried in the liquid develop to a certain extent during the pumping, the characteristics of the outer edge of the first blade are affected to cause performance degradation, since the liquid in the flow passage of the centrifugal first blade flows from the axial direction to the radial direction and the density of the liquid is higher than that of the gas, the cavitation bubbles in the liquid are easily separated under the action of the centrifugal force and rapidly expand to block the flow passage, so that the suction performance of the pump is rapidly reduced, and further the flow rate of the discharged water is affected.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a water pump impeller for a cleaning machine, which can improve the flow and the lift by limiting the development of cavitation bubbles in liquid.
The technical scheme adopted by the invention for solving the technical problems is as follows: a water pump impeller for a washing machine, comprising a second impeller capable of radially dispersing a fluid at least at a first end, characterized in that: the first impeller is arranged at the second end of the second impeller and is coaxially arranged with the second impeller; the second impeller comprises a second central shaft and at least two second blades, the second blades are arranged on the periphery of the second central shaft at intervals, the outer diameter of the second central shaft is gradually increased along the fluid flow direction to form an end cover, and at least part of edges of the blades are connected to the inner end face of the end cover.
In the above scheme, the second blades are spirally distributed on the end cover and the second central shaft mandrel.
Preferably, the second vanes are arranged on the end cover and the second central shaft in a radial direction of the second central shaft.
Further preferably, the second vane is axially divided into an upper section and a lower section which are connected to each other, and the length of the upper section in the radial direction is larger than that of the lower section in the radial direction.
Preferably, the second blades are arranged at equal intervals on the outer periphery of the second central shaft. Alternatively, the second blades are arranged at a variable interval on the periphery of the second central shaft, for example, two or more second blades form a group, and the interval between two second blades in the same group is smaller than the interval between adjacent second blades in different groups.
Preferably, the thicknesses of the second blades are equal. Alternatively, the thickness of at least one second vane is greater than the thickness of the other second vanes.
Preferably, the thickness of the second blade gradually increases in the fluid flow direction. The thickness of the starting end of the second blade is 1.6-1.9 mm, and preferably 1.8 mm; the thickness of the tail end of the second blade is 1.3-1.5 mm, and preferably 1.5 mm.
Preferably, the thickness of the second blade is gradually reduced in the fluid flow direction. The thickness of the starting end of the second blade is 1.3-1.5 mm, and preferably 1.5 mm; the thickness of the tail end of the second blade is 1.6-1.9 mm, and preferably 1.8 mm.
Preferably, the water pump further comprises a driving mechanism which can provide power for the rotation of the second impeller and the first impeller. The driving mechanism is a motor, and an output shaft of the motor is connected with central shafts of the second impeller and the first impeller.
The utility model provides an use spray arm that has above-mentioned water pump, includes the spray arm body, thereby this spray arm body inside cavity forms the water storage chamber, it has water inlet and apopore that are linked together with this water storage chamber to open on the spray arm body, its characterized in that: the water pump impeller for the cleaning machine is characterized by further comprising a water pump impeller for the cleaning machine, at least part of a second impeller in the water pump impeller for the cleaning machine penetrates through the water inlet to be located in the water storage cavity, and the first impeller is arranged on the upstream of the water inlet according to the flow direction of fluid.
The utility model provides an use cleaning machine that has above-mentioned spray arm, includes the box and spray arm, the bottom half has local recessed portion at least so that form the waterlogging caused by excessive rainfall region, and the waterlogging caused by excessive rainfall board has been put to this waterlogging caused by excessive rainfall region top lid, spray arm can locate waterlogging caused by excessive rainfall board top, its characterized in that with rotating: the first impeller penetrates through the draining plate, the upper portion of the first impeller is located above the draining plate, and the lower portion of the first impeller is located below the draining plate.
The spray arm comprises a spray arm body and is characterized in that a water inlet of the spray arm body is provided with a flow guide sleeve, at least part of a first impeller is positioned in the flow guide sleeve, and the first impeller, a second impeller, the inner wall of the flow guide sleeve matched with the first impeller and the inner wall of a water storage cavity matched with the second impeller jointly form a water pump.
The utility model provides an use cleaning machine that has above-mentioned water pump, includes the box that has the washing chamber, its characterized in that: the water pump impeller for the cleaning machine is provided with a pump shell arranged at the bottom of the box body, the top of the pump shell is provided with a containing cavity which can be connected with the mounting port and is used for collecting water, and the second impeller and the first impeller are arranged on one side of the containing cavity and are used for pumping water in the containing cavity into the box body through the mounting port.
Compared with the prior art, the invention has the advantages that: when the invention is used, because the first impeller is axial, the relative flow velocity of water flow at the outer edge of the first impeller is the maximum, cavitation bubbles can be generated at the outer edge of the first impeller at first, when the fluid reaches the second impeller, the liquid close to the central shaft of the second impeller compresses the cavitation bubbles at the outer edge under the action of centrifugal force, so that the fluid can only move close to the outer edge along the axial direction, and the cavitation bubbles collapse in a high-pressure area formed at the upper end of the second impeller, thereby greatly limiting the development of the cavitation bubbles, improving the cavitation erosion resistance of the second impeller, improving the flow and lift of a pump and further improving the cleaning effect.
Drawings
Fig. 1 is a schematic structural view of a water pump in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a second impeller in embodiment 1 of the present invention;
FIG. 3 is a schematic view of another structure of a second impeller in embodiment 1 of the present invention;
FIG. 4 is a schematic structural view of a second impeller in embodiment 2 of the present invention;
fig. 5 is a schematic structural view of a second impeller in embodiment 3 of the present invention;
fig. 6 is a schematic structural view of a second impeller in embodiment 4 of the present invention;
fig. 7 is a schematic structural view of a spray arm in embodiment 7 of the present invention;
FIG. 8 is a schematic view showing a structure of a cleaning machine according to embodiment 8 of the present invention;
FIG. 9 is a schematic view showing another structure of a cleaning machine according to embodiment 8 of the present invention;
fig. 10 is a schematic structural view of a cleaning machine in embodiment 9 of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
Example 1:
as shown in fig. 1, the water pump impeller for a cleaning machine of the present embodiment includes a first impeller 1, a second impeller 2 and a driving mechanism 3, the first impeller 1 is disposed upstream of the second impeller 2 according to the fluid flowing direction, and in the present embodiment, the first impeller 1 is disposed at one end of the second impeller 2 and is coaxially disposed with the second impeller 2 to rotate synchronously. The driving mechanism 3 of the present embodiment is a motor for providing power to rotate the second impeller 2 and the first impeller 1. An output shaft 31 of the motor is connected to the central shafts of the second impeller 2 and the first impeller 1. The first impeller 1 is used for drawing water flow in the axial direction, and the second impeller 2 has a certain flow guiding effect on the water flow drawn by the first impeller 1 and enables the fluid to be dispersed in the radial direction.
Specifically, the second impeller 2 of the present embodiment includes a second central shaft 21 and a plurality of second blades 22, and the plurality of second blades 22 are arranged at intervals on the outer periphery of the second central shaft 21. The outer diameter of the second central shaft 21 is gradually increased in the fluid flow direction to form an end cover 23, and at least part of the edge of the second blade 22 is connected to the inner end surface of the end cover 23.
The second blades 22 of the present embodiment are spirally distributed on the end cover 23 and the second central shaft 21, and the spiral direction may be clockwise as shown in fig. 2 or counterclockwise as shown in fig. 3. The thickness of each second blade 22 was equal and 1.8 mm.
Example 2:
the present embodiment is different from the above embodiments in that: as shown in fig. 4, the second blades 22 of the present embodiment are arranged on the end cover 23 and the second center shaft 21 in the radial direction of the second center shaft 21. The second blades 22 are arranged at equal intervals on the outer periphery of the second central shaft 21.
Example 3:
this example differs from example 2 in that: the second blades 22 of the present embodiment are arranged at a variable pitch on the outer periphery of the second central axis 21, as shown in fig. 5, the three second blades 22 form a group, and the pitch of two second blades 22 in the same group is smaller than the pitch between adjacent second blades 22 in different groups.
Example 4:
this example differs from example 1 in that: as shown in fig. 6, the thickness of a part of the second blades 22 of the present embodiment is larger than the thickness of the other second blades 22. The second blades 22 are arranged at intervals of thickness in the circumferential direction in the present embodiment. The blades with different thicknesses can not absorb water, and can generate pulse effect.
Example 5:
this example differs from example 1 in that: the thickness of the second vane 22 of the present embodiment gradually increases in the fluid flow direction. The thickness of the starting end of the second blade 22 is 1.6-1.9 mm, preferably 1.8 mm; the thickness of the end of the second blade 22 is 1.3-1.5 mm, preferably 1.5 mm.
Example 6:
this example differs from example 1 in that: the thickness of the second vane 22 of the present embodiment is gradually reduced in the fluid flow direction. The thickness of the starting end of the second blade 22 is 1.3-1.5 mm, preferably 1.5 mm; the thickness of the end of the second blade 22 is 1.6-1.9 mm, preferably 1.8 mm.
Example 7:
as shown in fig. 7, this embodiment shows a spray arm applied to any one of embodiments 1 to 6 for a water pump impeller of a cleaning machine, which includes a spray arm body 4, the spray arm body 4 is hollow to form a water storage cavity 41, the spray arm body 4 is provided with a water inlet 411 and a water outlet 412 communicated with the water storage cavity 41, an upper end of a second impeller 2 in the water pump impeller of the cleaning machine penetrates through the water inlet 411 and is located in the water storage cavity 41, and a first impeller 1 is located at an upstream of the water inlet according to a fluid flowing direction.
The second blades 22 of the second impeller 2 of the present embodiment are shaped as a fan-shaped structure with a central angle arranged outwards and a notch 120 at the central angle, and the notch 120 is arranged opposite to the edge of the water inlet 411.
A flow guide sleeve is arranged at the water inlet 411 of the spray arm body 4, at least part of the first impeller 1 is positioned in the flow guide sleeve, and the first impeller 1, the second impeller 2, the inner wall of the flow guide sleeve matched with the first impeller 1 and the inner wall of the water storage cavity 41 matched with the second impeller 2 jointly form a water pump.
Example 8:
as shown in fig. 8 and 9, this embodiment shows a cleaning machine to which the spray arm of embodiment 7 is applied, and the cleaning machine of this embodiment is a water tank type cleaning machine with an opening at the top, but of course, the cleaning machine can be designed to be a cleaning machine with an opening at the side wall as required. The cleaning machine comprises a box body (not shown) and a spray arm, wherein the box body is at least provided with a local concave part to form a draining area 51, a draining plate 52 is covered above the draining area 51, the spray arm is rotatably arranged above the draining plate 52, a first impeller 1 is arranged through the draining plate 52, the upper part of the first impeller 1 is positioned above the draining plate 52, and the lower part of the first impeller 1 is positioned below the draining plate 52.
The draining area 51 of the present embodiment may be formed as an elongated area gradually depressed from the center toward the periphery as shown in fig. 9, or the draining area 51 may be formed as a partially or entirely wide area by providing the shape of the bottom wall of the draining area 51 or the draining plate 52 as shown in fig. 8.
Example 9:
as shown in fig. 10, this embodiment shows a cleaning machine applied with the water pump in any one of embodiments 1 to 6, including a box 6 having a washing chamber 61, a mounting port 62 is opened at the bottom of the box 6, a water pump impeller for the cleaning machine has a pump housing 14 mounted at the bottom of the box 6, the top of the pump housing 14 has an accommodating chamber 141 connected with the mounting port 62 and used for collecting water, and a second impeller 2 and a first impeller 1 are disposed at one side of the accommodating chamber 141 and used for pumping water in the accommodating chamber 141 into the washing chamber 61 of the box 1 through the mounting port 62.

Claims (10)

1. A water pump impeller for a washing machine, comprising a second impeller capable of radially dispersing a fluid at least at a first end, characterized in that: the first impeller is arranged at the second end of the second impeller and is coaxially arranged with the second impeller; the second impeller comprises a second central shaft and at least two second blades, the second blades are arranged on the periphery of the second central shaft at intervals, the outer diameter of the second central shaft is gradually increased along the fluid flow direction to form an end cover, and at least part of edges of the second blades are connected to the inner end face of the end cover;
the second blades are distributed on the end cover and the second central shaft in a spiral shape or are arranged on the end cover and the second central shaft along the radial direction of the second central shaft;
according to the fluid flowing direction, the first impeller is arranged at the upstream of a water inlet of the water pump;
the second blades are arranged on the periphery of the second central shaft at variable intervals;
the thickness of at least one second blade is greater than the thickness of the other second blades.
2. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the second blade is axially divided into an upper section and a lower section which are connected with each other, and the length of the upper section in the radial direction is larger than that of the lower section in the radial direction.
3. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the thickness of the second blade gradually increases along the fluid flow direction.
4. The water pump impeller for a washing machine as claimed in claim 1, characterized in that: the thickness of the second blade gradually decreases in the direction of fluid flow.
5. The water pump impeller for a washing machine as claimed in any one of claims 1 to 4, characterized in that: and the second impeller and the first impeller are connected with a driving mechanism capable of providing power for the rotation of the second impeller and the first impeller.
6. The water pump impeller for a washing machine as claimed in claim 5, characterized in that: the driving mechanism is a motor, and an output shaft of the motor is connected with central shafts of the second impeller and the first impeller.
7. A spray arm with the water pump impeller of any one of claims 1-6 applied thereto, comprising a spray arm body, wherein the spray arm body is hollow inside to form a water storage cavity, and the spray arm body is provided with a water inlet and a water outlet communicated with the water storage cavity, and is characterized in that: the water pump impeller for the cleaning machine is characterized by further comprising a water pump impeller for the cleaning machine, at least part of a second impeller in the water pump impeller for the cleaning machine penetrates through the water inlet to be located in the water storage cavity, and the first impeller is arranged on the upstream of the water inlet according to the flow direction of fluid.
8. The spray arm of claim 7, wherein: the spray arm comprises a spray arm body and is characterized in that a water inlet of the spray arm body is provided with a flow guide sleeve, at least part of a first impeller is positioned in the flow guide sleeve, and the first impeller, a second impeller, the inner wall of the flow guide sleeve matched with the first impeller and the inner wall of a water storage cavity matched with the second impeller jointly form a water pump.
9. A cleaning machine using the spray arm of claim 7, comprising a box body and the spray arm, wherein the bottom of the box body is at least partially recessed to form a draining area, a draining plate is covered above the draining area, and the spray arm is rotatably arranged above the draining plate, and the cleaning machine is characterized in that: the first impeller penetrates through the draining plate, the upper portion of the first impeller is located above the draining plate, and the lower portion of the first impeller is located below the draining plate.
10. A cleaning machine with the water pump impeller of any one of claims 1-6 applied thereto, comprising a box body with a washing cavity, and is characterized in that: the water pump impeller for the cleaning machine is provided with a pump shell arranged at the bottom of the box body, the top of the pump shell is provided with a containing cavity which can be connected with the mounting port and is used for collecting water, and the second impeller and the first impeller are arranged on one side of the containing cavity and are used for pumping water in the containing cavity into the box body through the mounting port.
CN201711460190.5A 2017-12-28 2017-12-28 Water pump impeller for cleaning machine and application thereof Active CN109973421B (en)

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CN109973421B true CN109973421B (en) 2021-07-23

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CN110353600A (en) * 2019-07-11 2019-10-22 宁波方太厨具有限公司 A kind of cleaning machine
CN110367850B (en) * 2019-07-11 2022-03-18 宁波方太厨具有限公司 Fruit and vegetable cleaning machine
CN113317740B (en) * 2020-02-28 2023-03-14 宁波方太厨具有限公司 Impeller structure for double-layer spraying system and cleaning machine with same
CN113317741B (en) * 2020-02-28 2023-08-18 宁波方太厨具有限公司 Cleaning machine
CN113520264B (en) * 2020-04-14 2023-02-14 宁波方太厨具有限公司 Water pumping mechanism for cleaning machine
CN114680766A (en) * 2020-12-31 2022-07-01 宁波方太厨具有限公司 Cleaning machine

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