CN116024784A

CN116024784A - Detergent switching and throwing device and washing equipment

Info

Publication number: CN116024784A
Application number: CN202111239792.4A
Authority: CN
Inventors: 吕艳芬; 许升; 张涛; 孙冬松; 马传荣
Original assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Haier IoC Ecosystem Technologies Shanghai Co Ltd
Current assignee: Qingdao Haier Washing Machine Co Ltd; Haier Smart Home Co Ltd; Haier IoC Ecosystem Technologies Shanghai Co Ltd
Priority date: 2021-10-25
Filing date: 2021-10-25
Publication date: 2023-04-28

Abstract

The invention discloses a detergent switching and throwing device and washing equipment, wherein the switching and throwing device comprises a switching valve, a plurality of liquid inlets are formed in the side part of the switching valve, the liquid inlets are arranged at intervals along the circumferential direction of the switching valve, a liquid outlet is formed in the end part of the switching valve, and the liquid outlet is arranged deviated from the center of the end part of the switching valve; the switching valve controls the connection and disconnection between the liquid outlet and the liquid inlets. The switching valve can control the liquid outlet to be communicated with or disconnected from the liquid inlets, and various detergents can be respectively put in through the switching valve, so that the structure is simple, the occupied space is small, and the cost is low; after the liquid is fed from the liquid inlet to the inside of the switching valve, the liquid flows in the switching valve to reach the liquid outlet, and the liquid outlet is deviated from the center of the end part of the switching valve, so that the liquid can be discharged more smoothly, and the residual liquid in the switching valve can be reduced.

Description

Detergent switching and throwing device and washing equipment

Technical Field

The invention belongs to the field of washing equipment, and particularly relates to a detergent switching and throwing device and washing equipment.

Background

At present, the function requirements of people on the washing machine are becoming finer, wherein the automatic detergent throwing function does not need a user to manually throw in the detergent, so that the user operation is saved, and the requirement of the user on the automatic detergent throwing function is becoming larger.

However, the existing automatic-feeding washing machine usually feeds various detergents, such as laundry detergent, softener, disinfectant and the like. Usually, a plurality of throwing pumps are used for throwing respectively, so that the throwing pumps are more in quantity, complex in structure, large in occupied space and high in cost.

The present invention has been made in view of this.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides a detergent switching and throwing device which comprises a switching valve, wherein various detergents can be switched and thrown through the switching valve, and the device has the advantages of simple structure, small occupied space and low cost, and can reduce residual liquid in the switching valve.

Another object of the present invention is to provide a washing apparatus.

In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that: there is provided a detergent switching and dispensing device comprising,

the side part of the switching valve is provided with a plurality of liquid inlets which are arranged at intervals along the circumferential direction of the switching valve, the end part of the switching valve is provided with a liquid outlet, and the liquid outlet is arranged deviated from the center of the end part of the switching valve;

the switching valve controls the connection and disconnection between the liquid outlet and the liquid inlets.

Further, the liquid inlet comprises a water inlet which is arranged at one end of the side part, and the other liquid inlets are arranged at the other end of the side part at intervals;

the liquid outlet is arranged at one end of the end part, which is close to the water inlet.

Further, the switching valve comprises a valve body,

the liquid inlets are arranged on the side part of the valve body at intervals along the circumferential direction, and the liquid outlet is arranged on one end part of the valve body;

the valve core is rotatably arranged in the valve body along the circumferential direction, and the outer peripheral wall of the valve core is at least in rotary sealing arrangement with part of the inner peripheral wall of the side part of the valve body and is used for sealing a plurality of liquid inlets;

the liquid outlet is positioned at one side of the axis of the valve core, a through inlet is arranged on the peripheral wall of the valve core and used for being selectively communicated with or disconnected from one of the liquid inlets when the valve core rotates, and the inlet is communicated with the liquid outlet.

Further, the switching valve further comprises

The rotary shaft is rotatably sealed and penetrates through the other end part of the valve body opposite to the liquid outlet, is connected with the valve core and is used for driving the valve core to rotate in the valve body.

Further, the valve body is internally provided with a liquid inlet channel communicated with the inlet and the liquid outlet.

Further, the valve core comprises a valve body,

one end of the shaft seat in the axial direction is connected with the rotating shaft;

the supporting seat extends outwards from the peripheral wall of the shaft seat along the radial direction of the shaft seat, and the liquid outlet is opposite to the supporting seat;

the inner peripheral wall of the outer peripheral plate is connected with the outer peripheral wall of the supporting seat, the outer peripheral wall of the outer peripheral plate is in contact and sealing connection with the inner peripheral wall of the valve body, and the inlet is communicated with the outer peripheral plate.

Further, the supporting seat is arranged at intervals with the inner side wall of the end part of the valve body with the liquid outlet; the liquid inlet channel comprises

The first liquid inlet channel is arranged on the supporting seat and communicated with the inlet, and the first liquid inlet channel penetrates through one side of the supporting seat opposite to the liquid outlet;

the second liquid inlet channel is a gap between the supporting seat and the liquid outlet and is respectively communicated with the first liquid inlet channel and the liquid outlet.

Further, the supporting seat is a plurality of supporting arms which are arranged on the outer peripheral wall of the shaft seat at intervals along the peripheral direction, the inlet is arranged on the peripheral plate between two adjacent supporting arms, and a first liquid inlet channel is respectively formed between the two adjacent supporting arms;

or, the supporting seat is a boss extending along the peripheral direction and arranged on the peripheral wall of the shaft seat, and the first liquid inlet channel penetrates through two sides of the boss.

Further, a groove is formed in the end face of the other end of the shaft seat, a positioning protrusion is arranged on the inner side wall of the end portion of the valve body opposite to the groove, and the positioning protrusion is installed in the groove.

Further, the liquid inlet channel comprises

The first liquid inlet channel is arranged in the supporting seat and is communicated with the inlet;

the second liquid inlet channel is arranged on the supporting seat and penetrates through one side of the supporting seat opposite to the liquid outlet;

the third liquid inlet channel is arranged in the shaft seat and penetrates through two sides of the peripheral wall of the shaft seat in the radial direction, and two ends of the third liquid inlet channel are respectively communicated with the first liquid inlet channel and the second liquid inlet channel.

Further, the supporting seat is a boss which is arranged on the outer circumferential wall of the shaft seat in an extending mode along the outer circumferential direction, and the first liquid inlet channel and the second liquid inlet channel are arranged on the boss in a extending mode along the radial direction.

Further, the method also comprises the steps of,

a detergent box having a plurality of detergent accommodating chambers; the water inlets of the liquid inlets are used for being communicated with the water inlet pipe, and the detergent accommodating cavities are respectively communicated with the other liquid inlets in a one-to-one correspondence manner;

the circulating pump is communicated with the liquid outlet and is used for sucking the liquid in the switching valve and supplying the liquid to the washing barrel;

preferably, at least 3 liquid inlets are arranged on the side part of the valve body.

The invention also provides washing equipment, which is provided with any one of the washing agent switching and throwing devices.

By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects.

(1) According to the invention, the side part of the switching valve is provided with the liquid inlets, the end part of the switching valve is provided with the liquid outlets, the switching valve can control the liquid outlets to be communicated with or disconnected from the liquid inlets, and various detergents can be respectively put in through the switching valve, so that the structure is simple, the occupied space is small, and the cost is low. After the liquid is fed from the liquid inlet to the inside of the switching valve, the liquid flows in the switching valve to reach the liquid outlet, and the liquid outlet is deviated from the center of the end part of the switching valve, so that the liquid can be discharged more smoothly, and the residual liquid in the switching valve can be reduced.

(2) According to the invention, the side part of the valve body is provided with the liquid inlets, the end part of the valve body is provided with the liquid outlet, the peripheral wall of the valve core is provided with the inlet communicated with the liquid outlet, so that the liquid inlet on the valve body can be closed, leakage is prevented, the overall sealing performance of the switching valve is improved, the inlet is selectively communicated with one liquid inlet, the liquid inlet is communicated with the liquid outlet, and liquid is fed in, so that the switching valve can be flushed by a plurality of detergents through one-to-one correspondence of the switching valve or with water inlet, and the feeding accuracy of different detergents is improved.

The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:

FIG. 1 is a schematic view of a detergent switch-over dispensing device of the present invention;

FIG. 2 is a top view of a detergent switch-over dispensing device of the present invention;

FIG. 3 is a schematic cross-sectional view of a switching valve of the present invention;

FIG. 4 is a schematic cross-sectional view of a valve body of the present invention;

FIG. 5 is a schematic illustration of a valve cartridge of the present invention;

FIG. 6 is a schematic illustration of another valve cartridge of the present invention;

FIG. 7 is a schematic illustration of yet another valve cartridge of the present invention;

FIG. 8 is a schematic view of another detergent switch-over dispensing device of the present invention;

fig. 9 is a schematic view of a detergent switch-over dispensing device according to the present invention.

In the figure: 1. a valve body; 11. a liquid inlet; 111. a water inlet; 112. a detergent liquid inlet; 12. a liquid outlet; 13. positioning the convex; 2. a valve core; 21. a shaft seat; 211. a third liquid inlet channel; 212. a groove; 22. a support base; 221. a first liquid inlet channel; 222. a second liquid inlet channel; 23. an outer peripheral plate; 231. an inlet; 3. a rotating shaft; 4. a motor; 5. a detergent box; 6. and a circulation pump.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

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

As shown in fig. 1 to 9, the detergent switching and dispensing device according to the present invention includes a switching valve.

The side part of the switching valve is provided with a plurality of liquid inlets 11, and the liquid inlets 11 are arranged at intervals along the circumferential direction of the switching valve. The switching valve has a liquid outlet 12 at its end. The outlet 12 is arranged offset from the centre of the switching valve end. The switching valve controls the connection and disconnection between the liquid outlet 12 and the liquid inlets 11.

According to the invention, the side part of the switching valve is provided with the liquid inlets 11, the end part of the switching valve is provided with the liquid outlets 12, the switching valve can control the liquid outlets 12 to be communicated with or disconnected from the liquid inlets 11, and various detergents can be respectively thrown in through the switching valve, so that the structure is simple, the occupied space is small, and the cost is low. When liquid is fed from the liquid inlet 11 to the inside of the switching valve, the liquid flows in the switching valve to reach the liquid outlet 12, and the liquid outlet 12 is deviated from the center of the end part of the switching valve, so that the liquid can be discharged more smoothly, and the residual liquid in the switching valve can be reduced.

In the invention, the liquid outlet 12 may be in communication with each of the plurality of liquid inlets 11, or the liquid outlet 12 may be in communication with two or more of the plurality of liquid inlets 11 at the same time.

The liquid outlet 12 is provided near the outer periphery of the end portion of the switching valve.

The plurality of liquid inlets 11 are provided on the side portion at uniform intervals in the circumferential direction.

Alternatively, the liquid inlet 11 includes a water inlet 111 disposed at one end of the side portion. The rest of the liquid inlets 11 are arranged at intervals on the other end of the side part. The liquid outlet 12 is arranged at one end of the end part close to the rest liquid inlets 11.

Further, the switching valve includes a valve body 1 and a valve spool 2.

The plurality of liquid inlets 11 are arranged on the side of the valve body 1 at intervals in the circumferential direction. The liquid outlet 12 is provided at one end of the valve body 1. The valve core 2 is rotatably arranged in the valve body 1 along the circumferential direction, and the outer peripheral wall of the valve core 2 is at least in rotary sealing arrangement with part of the inner peripheral wall of the side part of the valve body 1, so as to be used for sealing a plurality of liquid inlets 11.

The liquid outlet 12 is positioned at one side of the axis of the valve core 2. The outer peripheral wall of the valve core 2 is provided with a through inlet 231 for selectively connecting or disconnecting one of the liquid inlets 11 when the valve core 2 rotates, and the inlet 231 is communicated with the liquid outlet 12.

According to the invention, the side part of the valve body 1 is provided with the liquid inlets 11, the end part of the valve body 1 is provided with the liquid outlet 12, the outer peripheral wall of the valve core 2 is provided with the inlet 231 communicated with the liquid outlet 12, so that the liquid inlets 11 on the valve body 1 can be closed, leakage is prevented, the overall sealing performance of the switching valve is improved, the inlet 231 is selectively communicated with one liquid inlet 11, and the liquid inlets 11 are communicated with the liquid outlet 12 for liquid feeding, so that the aim that a plurality of detergents can be fed through the switching valve in a one-to-one correspondence or washed in the switching valve by water is achieved, and the feeding accuracy of different detergent types is improved. In addition, in the invention, the liquid flows and washes along the peripheral part of the valve core 2 along the circumferential direction, the liquid outlet 12 is positioned at one side of the rotation axis of the valve core 2, the liquid is conveniently discharged from the liquid outlet 12, and the liquid residue is less.

The outer circumferential wall of the valve element 2 may be in a rotary seal arrangement with the inner circumferential wall of the circumferential portion of the valve body 1, or the outer circumferential wall of the valve element 2 may be in a rotary seal arrangement with the entire circumferential inner circumferential wall of the valve body 1.

The valve body 1 is internally provided with a cavity, and the valve core 2 is rotatably arranged in the cavity of the valve body 1. Preferably, the cavity in the valve body 1 is cylindrical. The plurality of liquid inlets 11 are uniformly arranged on the cylindrical outer peripheral wall at intervals. The liquid outlet 12 is provided on one end face of the cylinder.

The liquid outlet 12 is positioned on the radial line of the water inlet 111 and the center of the end part, and the liquid outlet 12 and the water inlet 111 are correspondingly arranged up and down.

The water inlet 111 is provided at the lower end of the valve body 1 for water inflow. The rest liquid inlets 11 are arranged at intervals at the upper end of the side part of the valve body 1 and are used for feeding the detergent.

Further, the switching valve further comprises a rotating shaft 3. The rotary shaft 3 is rotatably sealed and penetrated in the other end part of the valve body 1 opposite to the liquid outlet 12. The rotating shaft 3 is connected with the valve core 2 and is used for driving the valve core 2 to rotate in the valve body 1.

Further, the detergent switching and throwing device further comprises a motor 4. The motor 4 is in driving connection with the rotating shaft 3, and is used for driving the rotating shaft 3 to drive the valve core 2 to rotate. The motor 4 is connected with the casing of the switching valve through a connecting piece.

Preferably, the motor 4 is a stepper motor 4, and the rotation shaft 3 can be controlled to rotate within a preset angle range.

A mounting hole is provided at one end of the valve body 1. The rotating shaft 3 can be directly connected with the mounting hole of the valve body 1 in a sealing way through a sealing ring. Alternatively, the rotating shaft 3 is assembled and connected with other structures on the valve core 2, and the other structures are directly and hermetically connected with the mounting hole of the valve body 1 through a sealing ring, for example, the rotating shaft 3 is inserted into the other structures.

As shown in fig. 3 to 7, the valve body 1 has a liquid inlet channel therein, which communicates with the inlet 231 and the liquid outlet 12. The valve core 2 comprises a shaft seat 21, a supporting seat 22 and a peripheral plate 23.

One axial end of the shaft seat 21 is connected with the rotating shaft 3. The support seat 22 extends from the outer peripheral wall of the shaft seat 21 along the radial direction of the shaft seat 21. The liquid outlet 12 is disposed opposite to the supporting seat 22.

The inner peripheral wall of the outer peripheral plate 23 is connected with the outer peripheral wall of the supporting seat 22, and the outer peripheral wall of the outer peripheral plate 23 is in contact and sealing connection with the inner peripheral wall of the valve body 1. The inlet 231 is provided to penetrate the outer peripheral plate 23.

When the inlet 231 is communicated with a selected liquid inlet 11, liquid enters the inlet 231 of the valve core 2 through the selected liquid inlet 11, passes through the liquid inlet channel and is discharged from the liquid outlet 12 of the valve body 1. When the water inlet pressure is high, water flows and washes along the circumferential direction, so that the residue of the detergent in the switching valve is reduced.

The outer peripheral wall of the valve body 2 may be in rotational sealing connection with a part of the inner peripheral wall of the valve body 1, or may be in rotational sealing connection with all of the inner peripheral wall of the valve body 1.

Preferably, the peripheral plate 23 is a circular peripheral plate 23 or an arc-shaped extending peripheral plate 23.

Further, the two axial end surfaces of the outer peripheral plate 23 are in contact and sealing connection with the inner side walls of the two end parts of the valve body 1, so that the outer peripheral plate 23 of the valve core 2 and the liquid inlet 11 are arranged oppositely, and the liquid inlet tightness of the valve body 1 is improved.

The two opposite sides of the outer peripheral plate 23 of the valve core 2 and the two opposite ends of the valve body 1 are in fillet transition connection with the inner peripheral wall. The edge of the end part of the valve body 1 with the liquid outlet 12 is provided with a chamfer structure which is matched with the connection part of the two sides of the valve core 2 and the inner peripheral wall, so that the valve core 2 and the valve body 1 can be conveniently installed.

In one embodiment, as shown in fig. 3 to 6, the support seat 22 is spaced from the inner sidewall of the end of the valve body 1 having the liquid outlet 12. The liquid inlet channels include a first liquid inlet channel 221 and a second liquid inlet channel 222.

The first liquid inlet channel 221 is disposed on the support base 22 and is in communication with the inlet 231. The first liquid inlet channel 221 penetrates through the support seat 22 and is disposed at a side opposite to the liquid outlet 12. The second liquid inlet channel 222 is a gap between the support seat 22 and the liquid outlet 12. The second liquid inlet channel 222 is respectively communicated with the first liquid inlet channel 221 and the liquid outlet 12.

The liquid outlet 12 is always communicated with the liquid inlet channel.

In a specific embodiment, as shown in fig. 5, the support seat 22 is a plurality of support arms disposed on the peripheral wall of the shaft seat 21 at intervals along the peripheral direction. The inlet 231 is disposed on the peripheral plate 23 between two adjacent support arms, and a first liquid inlet channel 221 is formed between the two adjacent support arms.

In another specific embodiment, as shown in fig. 6, the supporting seat 22 is a boss extending along the peripheral direction and disposed on the peripheral wall of the shaft seat 21. The first liquid inlet channel 221 penetrates through two sides of the boss.

Liquid enters the first liquid inlet channel 221 from the inlet 231, then enters the gap, and flows out from the liquid outlet 12.

Preferably, the boss is a fan-shaped boss.

Further, a groove 212 is formed on the end surface of the other end of the shaft seat 21. A positioning protrusion 13 is provided on the inner side wall of the end of the valve body 1 opposite to the groove 212, and the positioning protrusion 13 is installed in the groove 212.

Preferably, an annular protrusion (not shown in the figure) is disposed on the outer peripheral wall of the shaft seat 21, and is reduced from the connection between the shaft seat 21 and the supporting seat 22 to the two ends of the shaft seat 21 in the axial direction, so that the liquid passing through the shaft seat 21 can be conveniently and smoothly discharged, the liquid is prevented from remaining on the valve core 2, and the liquid is reduced.

Preferably, the boss is a fan-shaped boss, and the peripheral plate 23 is an arc-shaped plate.

In another embodiment, as shown in fig. 7, the liquid inlet channels include a first liquid inlet channel 221, a second liquid inlet channel 222, and a third liquid inlet channel 211.

The first liquid inlet channel 221 is disposed inside the support seat 22 and is in communication with the inlet 231.

The second liquid inlet channel 222 is disposed on the support base 22. The second liquid inlet channel 222 penetrates through the side of the support seat 22 opposite to the liquid outlet 12, and is communicated with the first liquid inlet channel 221.

The third liquid inlet channel 211 is disposed in the shaft seat 21. The third liquid inlet channel 211 is disposed radially through two sides of the peripheral wall of the shaft seat 21. Both ends of the third liquid inlet channel 211 are respectively communicated with the first liquid inlet channel 221 and the second liquid inlet channel 222.

The support seat 22 may or may not have a gap with the end of the valve body 1.

The other end of the shaft seat 21 is arranged close to or spaced from the inner side wall of the end part of the valve body 1.

Specifically, the supporting seat 22 is a boss extending along the peripheral direction and disposed on the peripheral wall of the shaft seat 21. The first liquid inlet channel 221 is extended and arranged in the boss. The second liquid inlet channel 222 penetrates through the boss and is disposed at a side opposite to the liquid outlet 12.

As shown in fig. 8, the switching valve may further be provided with a plurality of liquid outlets 12 at the end of the valve body 1, which are used for communicating with the liquid inlets 11 in a one-to-one correspondence manner.

Or, the switching valve may further be provided with a plurality of liquid outlets 12 on the end of the valve body 1, so that when the valve core 2 rotates to any one of the liquid inlets 11 to be communicated with the liquid inlet channel, the plurality of liquid outlets 12 are all communicated with the liquid outlet channel, and the liquid outlet speed of the switching valve is improved.

As shown in fig. 9, the switching and dispensing device further comprises a detergent box 5 and a circulation pump 6. The detergent box 5 has a plurality of detergent accommodating chambers.

One water inlet 111 of the plurality of liquid inlets 11 is used for communicating with a water inlet pipe. When the water inlet 111 is communicated with the liquid inlet channel, the inner cavity of the valve body 1 can be flushed, water is fed or residual detergent is flushed and discharged.

The rest liquid inlets 11 are detergent liquid inlets 112, and are respectively communicated with the plurality of detergent accommodating cavities in a one-to-one correspondence manner. The circulating pump 6 is communicated with the liquid outlet 12 and is used for sucking the liquid in the switching valve and supplying the liquid to the washing barrel.

Preferably, at least 3 liquid inlets 11 are arranged on the side part of the valve body 1.

More preferably, the side of the valve body 1 is disposed upward. The number of the liquid inlets 11 is four, and includes one water inlet 111 and three detergent liquid inlets 112. The three detergent inlets 112 are sequentially and uniformly spaced on the top of the valve body 1. The water inlet 111 is provided at the bottommost portion of the valve body 1. The liquid outlet 12 is arranged near the lower end of the valve body 1, so that water is conveniently discharged.

The water inlet 111, the detergent liquid inlet 112 and the liquid outlet 12 are respectively provided with connectors protruding outwards, so that the connection with other pipelines is facilitated.

The invention also provides washing equipment which is provided with any one of the washing agent switching and throwing devices.

The washing equipment comprises a washing machine, a dish washing and drying integrated machine, a dish washing machine and the like. Preferably, the washing apparatus is a washing machine.

The washing machine comprises a water inlet pipe, a water outlet pipe and a washing barrel. The inlet pipe communicates with the inlet port 111. One end of the water outlet pipe is communicated with a liquid outlet of the circulating pump 6, and the other end of the water outlet pipe is used for guiding liquid into the washing barrel.

The foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited to the above-mentioned embodiment, but is not limited to the above-mentioned embodiment, and any simple modification, equivalent change and modification made by the technical matter of the present invention can be further combined or replaced by the equivalent embodiment without departing from the scope of the technical solution of the present invention.

Claims

1. The utility model provides a detergent switches puts in device which characterized in that: comprising the steps of (a) a step of,

2. A detergent switch-over dosing device as claimed in claim 1, wherein: the liquid inlet comprises a water inlet which is arranged at one end of the side part, and the other liquid inlets are arranged at the other end of the side part at intervals;

3. A detergent switch-over dosing device according to any one of claims 1-2, characterized in that: the switching valve may comprise a valve body having a valve body,

the liquid outlet is positioned at one side of the rotation axis of the valve core, a through inlet is arranged on the peripheral wall of the valve core and used for being selectively communicated with or disconnected from one of the liquid inlets when the valve core rotates, and the inlet is communicated with the liquid outlet.

4. A detergent switch-over dosing device as claimed in claim 3, wherein: the switching valve further comprises

5. The detergent switch-over and dispensing device of claim 4, wherein:

the valve body is internally provided with a liquid inlet channel communicated with the inlet and the liquid outlet.

6. The detergent switch-over and dispensing device of claim 5, wherein: the valve core comprises a valve body and a valve rod,

7. The detergent switch-over and dispensing device of claim 6, wherein: the supporting seat is arranged at intervals with the inner side wall of the end part of the valve body with the liquid outlet; the liquid inlet channel comprises

8. The detergent switch-over and dispensing device of claim 7, wherein: the support seat is a plurality of support arms which are arranged on the outer peripheral wall of the shaft seat at intervals along the peripheral direction, the inlet is arranged on a peripheral plate between two adjacent support arms, and a first liquid inlet channel is respectively formed between the two adjacent support arms;

9. A detergent switch-over dosing device according to any one of claims 7-8, characterized in that:

the end face of the other end of the shaft seat is provided with a groove, the inner side wall of the end part of the valve body opposite to the groove is provided with a positioning protrusion, and the positioning protrusion is arranged in the groove.

10. The detergent switch-over and dispensing device of claim 6, wherein: the liquid inlet channel comprises

11. A detergent switch-over dosing device as claimed in claim 10, wherein:

the supporting seat is a boss which is arranged on the peripheral wall of the shaft seat in an extending mode along the peripheral direction, and the first liquid inlet channel and the second liquid inlet channel are arranged on the boss in a extending mode along the radial direction.

12. A detergent switch-over dosing device as claimed in claim 2, wherein: also included is a method of manufacturing a semiconductor device,

13. A washing apparatus, characterized in that: a detergent switch-over dosing device according to any one of claims 1 to 12.