CN110743717A

CN110743717A - Car washing nozzle device based on cavitation jet principle

Info

Publication number: CN110743717A
Application number: CN201911174071.2A
Authority: CN
Inventors: 朱超; 毛江艳
Original assignee: Wuhan University of Technology WUT
Current assignee: Wuhan University of Technology WUT
Priority date: 2019-11-26
Filing date: 2019-11-26
Publication date: 2020-02-04

Abstract

The invention discloses a car washing nozzle device based on a cavitation jet principle, which comprises an inner pipe body and an outer pipe body coaxially arranged outside and at the end part of the inner pipe body; the inner pipe body is hollow to form a throat pipe, the outlet of the throat pipe is connected with a first nozzle arranged at the end part of the inner pipe body, the inlet of the throat pipe is connected with a second nozzle arranged at the end part of the outer pipe body through a connecting channel, and the second nozzle is connected with a water gun; the outer pipe body is provided with an atmosphere channel, the atmosphere channel is communicated with an annular cavity arranged on the outer peripheral surface of the inner pipe body, and the annular cavity is communicated with the throat pipe through an air inlet channel. The invention has the beneficial effects that: the invention is connected with a water gun, adopts the cavitation water jet principle, generates vaporization cavitation bubbles in the water jet stream, utilizes high-pressure impact generated when the cavitation bubbles collapse to enhance the jet flow operation effect, can achieve the same effect by lower jet flow pressure compared with the common water gun, has high cleaning force, strong cleaning capability and less water consumption, and reduces the waste of water resources.

Description

Car washing nozzle device based on cavitation jet principle

Technical Field

The invention relates to car washing equipment, in particular to a car washing nozzle device based on a cavitation jet principle.

Background

At present, automobiles are common travel tools, and the number of motor vehicles in China is up to 3.19 hundred million according to the release of the department of public security and the speed of 166 ten million vehicles per month is kept continuously and rapidly increasing; the increase in the number of cars is accompanied by an increase in water consumption for washing the cars. At present, two vehicle washing modes are mainly adopted, the first mode is to adopt a high-pressure water gun, one vehicle needs to be washed twice by the high-pressure water gun, and the water consumption exceeds 100 liters; the second is car washer, normally the non-contact high pressure water car washer can not be lower than 200L car. The fresh water resources are scarce in China, and the waste of the fresh water resources is further caused by the two modes of car washing. Therefore, there is a need for improvements in the prior art.

Disclosure of Invention

The invention aims to provide a vehicle washing nozzle device based on a cavitation jet principle, which is low in water consumption and high in cleanliness and overcomes the defects of the prior art.

The technical scheme adopted by the invention is as follows: a car washing nozzle device based on cavitation jet principle comprises an inner tube body and an outer tube body coaxially arranged at the outer part and the end part of the inner tube body; the inner pipe body is hollow to form a throat pipe, the outlet of the throat pipe is connected with a first nozzle arranged at the end part of the inner pipe body, the inlet of the throat pipe is connected with a second nozzle arranged at the end part of the outer pipe body through a connecting channel, and the second nozzle is connected with a water gun; the outer pipe body is provided with an atmosphere channel, the atmosphere channel is communicated with an annular cavity arranged on the outer peripheral surface of the inner pipe body, and the annular cavity is communicated with the throat pipe through an air inlet channel.

According to the scheme, the outlet end of the throat pipe is of a funnel type structure, and the caliber of the throat pipe is gradually reduced.

According to the scheme, the air inlet channels are provided with a plurality of groups and are uniformly arranged at intervals along the circumferential direction of the inner pipe body.

According to the scheme, the included angle between the axis of the airflow channel and the central line of the throat pipe is 45-75 degrees.

According to the scheme, the first external thread is arranged outside the front end of the outer pipe body, and the outer pipe body is connected with the water gun through the thread pair.

According to the scheme, the inner wall of the rear end of the outer pipe body is provided with a first internal thread, the first internal thread is meshed with a second external thread arranged on the outer peripheral surface of the inner pipe body, and the outer pipe body is connected with the inner pipe body through a thread pair.

According to the scheme, the first nozzle is an angular nozzle.

According to the scheme, the second nozzle is an organ pipe nozzle.

The invention has the beneficial effects that: the invention is connected with a water gun, adopts the cavitation water jet principle, generates vaporization cavitation bubbles in the water jet stream, utilizes high-pressure impact generated when the cavitation bubbles collapse to enhance the jet flow operation effect, can achieve the same effect by lower jet flow pressure compared with the common water gun, has high cleaning force, strong cleaning capability and less water consumption, and reduces the waste of water resources.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the inner tube body in the present embodiment.

Fig. 3 is a schematic structural diagram of the outer tube in this embodiment.

Wherein: 1. an outer tubular body; 2. an inner tube body; 3. a second nozzle; 4. a first external thread; 5. an atmospheric channel; 6. a first internal thread; 7. an intake passage A; 8. an intake passage B; 9. an intake passage C; 10. a throat; 11. a first nozzle; 12. a second external thread.

Detailed Description

For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.

Fig. 1 shows a nozzle device for washing car based on cavitation jet principle, which comprises an inner tube 2, an outer tube 1 coaxially disposed outside and at the end of the inner tube 2; the inner pipe body 2 is hollow to form a throat pipe 10, the outlet of the throat pipe 10 is connected with a first nozzle 11 arranged at the end part of the inner pipe body 2, the inlet of the throat pipe 10 is connected with a second nozzle 3 arranged at the end part of the outer pipe body 1 through a connecting channel, and the second nozzle 3 is connected with a water gun; an atmosphere channel 5 is formed in the outer tube body 1, the atmosphere channel 5 is communicated with an annular cavity formed in the outer peripheral surface of the inner tube body 2, and the annular cavity is communicated with the throat tube 10 through an air inlet channel. In this embodiment, the water flow direction is from the second nozzle 3 to the first nozzle 11.

Preferably, the outlet end of the throat 10 is a funnel structure, and the caliber of the funnel structure is gradually reduced.

Preferably, the air inlet channels are arranged in multiple groups and evenly spaced along the circumferential direction of the inner pipe body 2; the included angle between the axis of the airflow channel and the central line of the throat pipe 10 is 45-75 degrees, and the cavitation effect is good. In the present embodiment, there are 3 intake passages, that is, an intake passage a7, an intake passage B8, and an intake passage C9; the included angle between two adjacent air inlet channels is 120 degrees.

Preferably, as shown in fig. 2 and 3, a first external thread 4 is arranged outside the front end of the outer tube 1, and the outer tube 1 is connected with the water gun through a thread pair; the inner wall of the rear end of the outer pipe body 1 is provided with a first internal thread 6, the first internal thread 6 is meshed with a second external thread 12 arranged on the outer peripheral surface of the inner pipe body 2, and the outer pipe body 1 and the inner pipe body 2 are connected through a thread pair.

Preferably, the first nozzle 11 is an angular nozzle and the second nozzle 3 is an organ nozzle.

The nozzle device can be connected with a water gun or a high-pressure water pipe; when washing, the washing water is sprayed out from the first nozzle after passing through the second nozzle and the throat pipe to wash the vehicle body; meanwhile, the pressure in the throat pipe is smaller than the external pressure due to the high-speed flowing flushing water, the external air enters the throat pipe under the action of pressure difference to generate vaporization vacuoles, the vaporization vacuoles are annihilated when being sprayed out together with the high-pressure water, the high-pressure impact generated when the vacuoles are collapsed enhances the jet effect, the vehicle washing efficiency and the cleaning force are improved, and the water is saved.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or equivalent substitutions of some technical features, but any modifications, equivalents, improvements and the like within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A car washing nozzle device based on cavitation jet principle is characterized by comprising an inner tube body and an outer tube body coaxially arranged outside and at the end part of the inner tube body; the inner pipe body is hollow to form a throat pipe, the outlet of the throat pipe is connected with a first nozzle arranged at the end part of the inner pipe body, the inlet of the throat pipe is connected with a second nozzle arranged at the end part of the outer pipe body through a connecting channel, and the second nozzle is connected with a water gun; the outer pipe body is provided with an atmosphere channel, the atmosphere channel is communicated with an annular cavity arranged on the outer peripheral surface of the inner pipe body, and the annular cavity is communicated with the throat pipe through an air inlet channel.

2. The device of claim 1, wherein the outlet end of the throat is funnel-shaped with a gradually decreasing diameter.

3. The device as claimed in claim 1, wherein the plurality of air inlet channels are uniformly spaced along the circumference of the inner tube.

4. The vehicle washing nozzle device based on the cavitation jet principle as claimed in claim 2, wherein the included angle between the axis of the air flow channel and the central line of the throat is 45 ° to 75 °.

5. The nozzle device of claim 1, wherein the outer tube has a first external thread on the front end, and the outer tube is connected to the water gun through a thread pair.

6. The nozzle device of claim 1, wherein the outer tube has a first internal thread formed on an inner wall of a rear end thereof, the first internal thread being engaged with a second external thread formed on an outer circumferential surface of the inner tube, and the outer tube and the inner tube are coupled to each other by a thread pair.

7. The cavitation-jet-based vehicle washing nozzle device as recited in claim 1, wherein the first nozzle is an angular nozzle.

8. The cavitation jet based vehicle washing nozzle device as recited in claim 1, wherein the second nozzle is an organ pipe nozzle.