CN218805727U

CN218805727U - Multifunctional car washer

Info

Publication number: CN218805727U
Application number: CN202320252444.9U
Authority: CN
Inventors: 刘占忠; 李少雄
Original assignee: Tianjin Weizhilan Intelligent Information Technology Co ltd
Current assignee: Tianjin Weizhilan Intelligent Information Technology Co ltd
Priority date: 2023-02-20
Filing date: 2023-02-20
Publication date: 2023-04-07
Anticipated expiration: 2033-02-20

Abstract

The utility model provides a multi-functional car washer, which comprises a housin, be equipped with the dust catcher in the casing, the clear water case, the stock solution bucket of carwash liquid, air compressor, the diaphragm pump, the booster pump, high-pressure air distribution solenoid valve, air foam generator, plunger pump etc, the water inlet of diaphragm pump stretches into the stock solution bucket of carwash liquid, the gas outlet of high-pressure air distribution solenoid valve passes through the pipeline and links to each other with air foam generator, on the water inlet of the advance water piping connection to clear water case of booster pump, the drain pipe of diaphragm pump, the outlet pipe of booster pump pass through the tee bend and link to each other with air foam generator. The utility model discloses a multi-functional car washer can effective water economy resource to it is convenient to use, has the frostproofing function of low temperature evacuation.

Description

Multifunctional car washer

Technical Field

The utility model belongs to the technical field of the equipment of carwash, specifically a multi-functional car washer also can regard as the cleaning equipment of the equipment of other length and width height size in 5m × 2m or the cleaning equipment that the minim removed.

Background

With the rapid development of Chinese economy, the automobile holding capacity is more and more. The automobile becomes one of the main transportation means for people to go out and commute, and the long-time driving causes the automobile to be quickly polluted by soil and dust. The manual vehicle washing cost is generally higher in cities and remote areas, and vehicles are washed in a queue after rain and snow or in a busy season.

Under the condition of the prior art, a self-service car washer, such as a patent with the patent number of 201820742207X, shares a pipe with clean water and foam, and a process of flushing residual in a pipeline is needed when the clean water and the foam are switched, so that water resource waste is caused; in addition, the existing car washer foam mostly uses water-based foam formed by mixing car washing liquid and water, so that waste of water resources is caused; meanwhile, the problem that the use of car washing is influenced by the fact that residual liquid in the spray gun is frozen easily occurs in northern winter or cold areas all the year round.

Therefore, the existing car washing machine generally has the following disadvantages: firstly, the clean water and the foam share one pipeline, and the residual liquid in the pipeline needs to be flushed when the clean water and the foam are switched, so that the waste of water resources is caused; secondly, the car washing foam is formed by mixing the car washing liquid and water, so that the waste amount of water resources is large; and thirdly, the antifreezing and drainage functions of pipelines are not provided, so that the use effect of the equipment in winter is influenced.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention is directed to a multifunctional car washing machine, which can solve the above problems.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a multifunctional car washer comprises a shell, wherein a dust collector, a clean water tank, a car washing liquid stock solution barrel, an air compressor, a diaphragm pump, a booster pump, a high-pressure air distribution electromagnetic valve, an air foam generator and a plunger pump are arranged in the shell; the bottom of the clean water tank is provided with a water inlet and a water outlet, the water inlet of the clean water tank is connected with external tap water through a first normally closed electromagnetic valve, the water outlet of the clean water tank is connected with the water inlet of the plunger pump through a second normally closed electromagnetic valve, and the water outlet of the plunger pump is connected with a water gun; a water inlet of the booster pump is connected with external tap water, a water inlet of the diaphragm pump extends into the car washing liquid stock solution barrel, a water outlet of the booster pump and a water outlet of the diaphragm pump are connected with a water inlet of a third normally closed solenoid valve through a fourth tee joint, a water outlet of the third normally closed solenoid valve is connected with a liquid inlet of an air foam generator, and a foam outlet of the air foam generator is connected with a foam gun; the air outlet of the air compressor is connected with the air inlet of the high-pressure air distribution electromagnetic valve, two air outlets of the high-pressure air distribution electromagnetic valve are respectively connected with the air inlet and the evacuation port of the air foam generator, and the other air outlet of the high-pressure air distribution electromagnetic valve is connected with the water inlet of the plunger pump.

Furthermore, the bottom of the shell is provided with a universal caster.

Furthermore, the shell is divided into an upper layer, a middle layer and a lower layer by an upper layer and a lower layer of clapboards, wherein the dust collector is positioned at the left side of the upper layer, the clean water tank is positioned at the right side of the upper layer, and the right side of the upper layer of clapboard is provided with an interlayer opening for leading a water pipe connected with a water inlet and a water outlet of the clean water tank to pass through; the middle layer is divided into a left part and a right part by using a frame clapboard, the middle of the frame clapboard is hollow and used for a pipeline to pass through, the air compressor is positioned at the rear of the left side of the middle layer, the car washing liquid stock solution barrel is positioned at the front of the left side of the middle layer, the diaphragm pump is positioned at the rear of the right side of the middle layer, the right side of the lower layer is provided with a bracket for fixing the plunger pump, and the plunger pump is fixed on the bracket through a rubber shock absorber.

Further, a low water level sensor, a high water level sensor and a standby high water level sensor are arranged in the clear water tank; the low water level sensor, the high water level sensor and the standby high water level sensor are used for controlling the switch of the first normally closed electromagnetic valve, and automatic water supplement of the clear water tank is realized.

Further, the first normally closed solenoid valve is connected with external tap water through a pre-filter.

Furthermore, an angle valve is arranged in front of the water inlet of the pre-filter, and a first tee joint is respectively connected with external tap water, the water inlet of the angle valve and the water inlet of the booster pump; a second tee joint is arranged between the pre-filter and the first normally closed solenoid valve, and the second tee joint is respectively connected with the water outlet of the pre-filter, the water inlet of the first normally closed solenoid valve and the water inlet of the hand washing solenoid valve.

And a pressure stabilizing valve is arranged between the air outlet of the high-pressure air distribution electromagnetic valve and the air inlet of the air foam generator.

Further, three air outlets of the high-pressure air distribution electromagnetic valve are provided with one-way valves.

Compared with the prior art, the utility model discloses following beneficial effect has:

first, the utility model discloses a multi-functional car washer uses the squirt and the foam rifle of mutually independent pipeline, can effectively reduce the waste of water resource, when guaranteeing the cleaning performance, reduces use cost.

Second, the utility model discloses a multi-functional car washer, the air foam generator of use is mixed the liquid by the car washer clear water of a small amount of high-pressure air cooperation and is produced the foam of gas base, when guaranteeing the foam effect, has reduced the use amount of water resource, has further reduced use cost.

Third, the utility model discloses a multi-functional car washer is equipped with in the air foam generator and is used for letting in the evacuation mouth that highly-compressed air cleaned inside foam, and highly-compressed air distribution solenoid valve also can be to the plunger pump air of injecting simultaneously, has realized cleaning squirt and foam gun pipeline, prevents that inside from freezing, has improved the result of use of this equipment in cold areas.

Drawings

The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:

FIG. 1 is a first schematic view of the internal structure of a multifunctional car washer;

FIG. 2 is a schematic diagram of the water supply principle of a clean water tank of the multifunctional car washer;

FIG. 3 is a second schematic view of the internal structure of a multifunctional car washer;

FIG. 4 is a schematic diagram of the foam generating principle of the multifunctional car washer;

FIG. 5 is a third schematic view of the internal partial structure of a multifunctional car washer;

FIG. 6 is a schematic view of the antifreeze emptying principle of the multifunctional car washer;

fig. 7 is a schematic view of a housing of a multifunctional car washer.

Description of reference numerals:

1. a housing; 2. a vacuum cleaner; 3. a clear water tank; 4. a stock solution barrel of the car washing solution; 5. an air compressor; 6. a diaphragm pump; 7. a booster pump; 8. a high pressure air distribution solenoid valve; 9. an air foam generator; 10. a hand washing button; 11. a hand washing solenoid valve; 12. a pre-filter; 13. a plunger pump; 14. a first tee joint; 15. a temperature sensor; 16. a flow rate sensor; 17. a first normally closed solenoid valve; 18. a second normally closed solenoid valve; 19. an angle valve; 20. a second tee joint; 21. a low water level sensor; 22. a high water level sensor; 23. a standby high water level sensor; 24. a third tee joint; 25. a first check valve; 26. a second one-way valve; 27. a third check valve; 28. a pressure maintaining valve; 29. a third normally closed solenoid valve; 30. a fourth tee joint; 31. a fourth check valve; 32. a universal caster; 33. a frame spacer; 34. opening holes in the interlayer; 35. a housing door; 36. a central control unit.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features of the embodiments of the present invention may be combined with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1 to 7, a multifunctional car washer comprises a housing 1, wherein a dust collector 2, a clean water tank 3, a car washing liquid stock solution barrel 4, an air compressor 5, a diaphragm pump 6, a booster pump 7, a high-pressure air distribution solenoid valve 8, an air foam generator 9 and a plunger pump 13 are arranged in the housing 1; the bottom of the clean water tank 3 is provided with a water inlet and a water outlet, the water inlet of the clean water tank 3 is connected with external tap water through a first normally closed solenoid valve 17, the water outlet of the clean water tank 3 is connected with the water inlet of a plunger pump 13 through a second normally closed solenoid valve 18, and the water outlet of the plunger pump 13 is connected with a water gun; a water inlet of the booster pump 7 is connected with external tap water, a water inlet of the diaphragm pump 6 extends into the car washing liquid stock solution barrel 4, a water outlet of the booster pump 7 and a water outlet of the diaphragm pump 6 are connected with a water inlet of a third normally closed electromagnetic valve 29 through a fourth tee joint 30, a water outlet of the third normally closed electromagnetic valve 29 is connected with a liquid inlet of the air foam generator 9, and a foam outlet of the air foam generator 9 is connected with a foam gun; an air outlet of the air compressor 5 is connected with an air inlet of a high-pressure air distribution electromagnetic valve 8, two air outlets of the high-pressure air distribution electromagnetic valve 8 are respectively connected with an air inlet and a drain port of an air foam generator 9, and the other air outlet of the high-pressure air distribution electromagnetic valve 8 is connected with a water inlet of a plunger pump 13.

As shown in fig. 1 and 7, the bottom of the housing 1 is provided with casters 32 to facilitate short-distance movement between a production shop and an installation site.

As shown in fig. 1 and 7, the interior of the casing 1 is divided into an upper layer, a middle layer and a lower layer by an upper layer and a lower layer of clapboards, wherein the dust collector 2 is positioned at the left side of the upper layer, the clean water tank 3 is positioned at the right side of the upper layer, and the right side of the upper layer of clapboard is provided with an interlayer opening 34 for a water pipe connected with a water inlet and a water outlet of the clean water tank 3 to pass through; the middle layer is divided into a left part and a right part by a frame clapboard 33, the middle of the frame clapboard 33 is hollow and used for pipelines to pass through, the air compressor 5 is positioned at the rear of the left side of the middle layer, the car washing liquid stock solution barrel 4 is positioned at the front of the left side of the middle layer, the diaphragm pump 6 is positioned at the rear of the right side of the middle layer, the right side of the lower layer is provided with a bracket for fixing the plunger pump 13, and the plunger pump 13 is fixed on the bracket through a rubber shock absorber.

In the present embodiment, the rubber damper is a VV type rubber damper.

In another embodiment, as shown in fig. 2 and 7, the central control unit 36 is disposed on the housing door 35, the prefilter 12 is connected in series with a pressure gauge, the pressure gauge sends monitored water pressure data to the central control unit 36, when the pressure is not within a preset value range, the central control unit 36 judges that the tap water is cut off according to the pressure value, and automatically sends a report to an operation and maintenance person to inform the operation and maintenance person of the arrival of the tap water for maintenance, or sends an operation and maintenance stopping notification message to a user, so that the site nursing and operation and maintenance costs are effectively saved, and unattended nursing is realized.

As shown in fig. 2 and 7, a low water level sensor 21, a high water level sensor 22 and a standby high water level sensor 23 are arranged in the clean water tank 3; the low water level sensor 21, the high water level sensor 22 and the standby high water level sensor 23 are used for controlling the on-off of the first normally closed electromagnetic valve 17, and automatic water replenishing of the clean water tank 3 is realized. The low water level sensor 21 is located in the middle of the clean water tank 3, the high water level sensor 22 and the standby high water level sensor 23 are located on the upper portion of the clean water tank 3 and close to a water tank opening, and the standby high water level sensor 23 is two centimeters higher than the high water level sensor 22. In another embodiment, the low water level sensor 21, the high water level sensor 22 and the standby high water level sensor 23 may also send signals to the central control unit 36, and the central control unit 36 controls the opening and closing of the first normally closed solenoid valve 17 to perform automatic water replenishing of the clean water tank 3. When the water level of the clean water tank 3 reaches the position of the low water level sensor 21, the low water level sensor 21 sends a signal to the central control unit 36, the central control unit 36 controls the first normally closed electromagnetic valve 17 to be opened, tap water flows into the clean water tank 3 for supplementing, when the water level of the clean water tank 3 reaches the position of the high water level sensor 22 or the standby high water level sensor 23, the high water level sensor 22 or the standby high water level sensor 23 sends a signal to the central control unit 36, the central control unit 36 controls the first normally closed electromagnetic valve 17 to be closed, and the tap water stops flowing into the clean water tank 3. When the high water level sensor 22 fails, the standby high water level sensor 23 may still send a signal to the central control unit 36, preventing a water flood failure.

The water inlet of the diaphragm pump 6 is connected with a coarse filter screen in series and is connected with a car washing liquid stock solution barrel 4, the car washing liquid stock solution barrel 4 can be disassembled and fixed, the packing barrel of a car washing liquid factory can be integrally replaced or used, a liquid supplementing link of the barrel by the barrel is omitted, and the workload of operation and maintenance personnel is reduced.

As shown in fig. 4, in the present embodiment, the high-pressure air distribution solenoid valve 8 has one air inlet and three air outlets, and each air outlet can be independently on-off controlled.

As shown in fig. 2, the first normally closed solenoid valve 17 is connected to the external tap water through the pre-filter 12.

As shown in fig. 1 and 2, an angle valve 19 is arranged in front of the water inlet of the pre-filter 12, and a first tee joint 14 is respectively connected with external tap water, the water inlet of the angle valve 19 and the water inlet of the booster pump 7; a second tee joint 20 is arranged between the pre-filter 12 and the first normally closed electromagnetic valve 17, and the second tee joint 20 is respectively connected with the water outlet of the pre-filter 12, the water inlet of the first normally closed electromagnetic valve 17 and the water inlet of the hand washing electromagnetic valve 11. The hand washing button 10 is connected with the hand washing electromagnetic valve 11, and the hand washing button 10 is used for controlling the on-off of the hand washing electromagnetic valve 11.

As shown in fig. 4, a pressure stabilizing valve 28 is arranged between the air outlet of the high-pressure air distribution solenoid valve 8 and the air inlet of the air foam generator 9.

As shown in fig. 4, three air outlets of the high-pressure air distribution solenoid valve 8 are respectively provided with a first check valve 25, a second check valve 26 and a third check valve 27, and a water outlet of the booster pump 7 is provided with a fourth check valve 31.

In this embodiment, the air foam generator 9 has been widely used in the fields of fire fighting, shield tunneling machine excavation, etc., and the principle thereof is that after the vehicle washing liquid and the clean water are mixed, the vehicle washing liquid and the high-pressure air are simultaneously injected into the air foam generator 9 to generate the foam containing more air. Meanwhile, the air foam generator 9 is provided with an evacuation port, high-pressure air can be input, the internal structure of the air foam generator 9 is evacuated and cleaned, and freezing of residual liquid in a low-temperature environment is avoided.

The car washer has the following functions:

and (3) foaming function:

as shown in fig. 4, an air outlet of the air compressor 5, the diaphragm pump 6, the booster pump 7, the third normally closed solenoid valve 29 and the high-pressure air distribution solenoid valve 8, which is connected to an air inlet of the air foam generator 9, is opened, at this time, the booster pump 7 pressurizes external tap water and sends the pressurized tap water to a fourth tee 30, the diaphragm pump 6 sends the car washing stock solution from the car washing stock solution tank 4 to the fourth tee 30, clean water and the car washing stock solution are mixed in the fourth tee 30 and then injected into an inlet of the air foam generator 9, high-pressure air output by the air compressor 5 enters the air inlet of the air foam generator 9 through the high-pressure air distribution solenoid valve 8, and at this time, the car washing stock solution and the high-pressure air generate air-based air foam in the air foam generator 9 and are ejected from the foam gun through a foam outlet of the air foam generator 9.

Clear water function:

as shown in fig. 1 and fig. 2, the second normally closed electromagnetic valve 18 and the plunger pump 13 are opened, the clean water in the clean water tank 3 enters the plunger pump 13 from the water outlet, and the plunger pump 13 conveys the clean water to be ejected through the water gun.

The hand washing function is as follows:

as shown in fig. 1 and 2, the hand washing button 10 controls the on/off of the hand washing electromagnetic valve 11, when the hand washing button 10 controls the hand washing electromagnetic valve 11 to be opened, external tap water enters the hand washing electromagnetic valve 11 through the pre-filter 12 and the second tee 20 to realize a hand washing function, and when the hand washing button 10 controls the hand washing electromagnetic valve 11 to be closed, the tap water is cut off.

An emptying function:

as shown in fig. 6, the air outlet of the high-pressure air distribution solenoid valve 8 connected to the evacuation port of the air foam generator 9 is opened, and the high-pressure air enters the air foam generator 9 to evacuate the residual liquid inside the air foam generator 9 and in the foam gun, so as to prevent the low-temperature freezing of the liquid and influence on the later use of the foam gun. Further, an exhaust port of the high-pressure air distribution electromagnetic valve 8 connected with the third tee joint 24 is opened, the other two interfaces of the third tee joint 24 are respectively connected with a water inlet of the plunger pump 13 and a water outlet of the second normally closed electromagnetic valve 18, high-pressure air enters the plunger pump 13 through the third tee joint 24, residual liquid in the water gun is emptied, low-temperature freezing of the liquid is prevented, and the later-stage use of the water gun is influenced.

In another embodiment, as shown in fig. 6, the flow rate sensor 16 is connected in series with the water inlet of the plunger pump 13, when the flow rate of the water inlet is smaller than the set range, the flow rate sensor 16 sends a signal to the central control unit 36, and the central control unit 36 controls the power supply end of the plunger pump 13 to be powered off, so as to prevent the plunger pump 13 from idle running and being damaged.

As shown in fig. 6, in another embodiment, an automatic evacuation operation may be implemented, the temperature sensor 15 collects an ambient temperature, and sends a signal to the central control unit 36, when the ambient temperature is lower than a set temperature, and at the same time, the central control unit 36 controls the air compressor 5 to start, and the air outlet corresponding to the high-pressure air distribution solenoid valve 8 is opened, so that the high-pressure air enters the air foam generator 9 evacuation port and the plunger pump 13, thereby implementing an evacuation operation on residual liquid in the water gun and the foam gun.

In this embodiment, the control switches of all the pump valves can be installed on the casing door 35 in a centralized manner, so that the operation of the user is facilitated.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A multifunctional car washer is characterized in that: the device comprises a shell (1), wherein a dust collector (2), a clear water tank (3), a car washing liquid stock solution barrel (4), an air compressor (5), a diaphragm pump (6), a booster pump (7), a high-pressure air distribution solenoid valve (8), an air foam generator (9) and a plunger pump (13) are arranged in the shell (1); the bottom of the clear water tank (3) is provided with a water inlet and a water outlet, the water inlet of the clear water tank (3) is connected with external tap water through a first normally closed solenoid valve (17), the water outlet of the clear water tank (3) is connected with the water inlet of the plunger pump (13) through a second normally closed solenoid valve (18), and the water outlet of the plunger pump (13) is connected with a water gun; a water inlet of the booster pump (7) is connected with external tap water, a water inlet of the diaphragm pump (6) extends into the car washing liquid stock solution barrel (4), a water outlet of the booster pump (7) and a water outlet of the diaphragm pump (6) are connected with a water inlet of a third normally closed electromagnetic valve (29) through a fourth tee (30), a water outlet of the third normally closed electromagnetic valve (29) is connected with a liquid inlet of the air foam generator (9), and a foam outlet of the air foam generator (9) is connected with a foam gun; the air outlet of the air compressor (5) is connected with the air inlet of the high-pressure air distribution electromagnetic valve (8), two air outlets of the high-pressure air distribution electromagnetic valve (8) are respectively connected with the air inlet and the evacuation port of the air foam generator (9), and the other air outlet of the high-pressure air distribution electromagnetic valve (8) is connected with the water inlet of the plunger pump (13).

2. The multifunctional car washer as claimed in claim 1, characterized in that: the bottom of the shell (1) is provided with a universal caster (32).

3. The multifunctional car washer as claimed in claim 1, characterized in that: the interior of the shell (1) is divided into an upper layer, a middle layer and a lower layer by an upper layer and a lower layer of clapboards, wherein the dust collector (2) is positioned on the left side of the upper layer, the clean water tank (3) is positioned on the right side of the upper layer, and the right side of the upper layer of clapboard is provided with an interlayer opening hole (34) for a water pipe connected with a water inlet and a water outlet of the clean water tank (3) to pass through; wherein the intermediate level uses frame baffle (33) to cut off for controlling two parts, cavity is used for the pipeline to pass through in the middle of frame baffle (33), air compressor (5) are located intermediate level left side rear, carwash stoste bucket (4) are located intermediate level left side the place ahead, diaphragm pump (6) are located intermediate level right side rear, and the lower floor right side is equipped with and is used for fixing the support of plunger pump (13), plunger pump (13) are fixed through rubber shock absorber on the support.

4. The multifunctional car washer according to claim 1, characterized in that: a low water level sensor (21), a high water level sensor (22) and a standby high water level sensor (23) are arranged in the clear water tank (3); the low water level sensor (21), the high water level sensor (22) and the standby high water level sensor (23) are used for controlling the switch of the first normally closed electromagnetic valve (17) to realize the automatic water replenishing of the clean water tank (3).

5. A multifunctional car washer according to claim 4, characterized in that: the first normally closed electromagnetic valve (17) is connected with external tap water through a pre-filter (12).

6. The multifunctional car washer as claimed in claim 5, characterized in that: an angle valve (19) is arranged in front of a water inlet of the pre-filter (12), and a first tee joint (14) is respectively connected with external tap water, the water inlet of the angle valve (19) and the water inlet of the booster pump (7); a second tee joint (20) is arranged between the pre-filter (12) and the first normally closed electromagnetic valve (17), and the second tee joint (20) is respectively connected with a water outlet of the pre-filter (12), a water inlet of the first normally closed electromagnetic valve (17) and a water inlet of the hand washing electromagnetic valve (11).

7. The multifunctional car washer according to claim 1, characterized in that: and a pressure stabilizing valve (28) is arranged between the air outlet of the high-pressure air distribution electromagnetic valve (8) and the air inlet of the air foam generator (9).

8. The multifunctional car washer as claimed in claim 1, characterized in that: three air outlets of the high-pressure air distribution electromagnetic valve (8) are respectively provided with a one-way valve.