Self-service car washing machine and foam system thereof

Abstract

The invention discloses a self-service car washing machine and a foam system thereof. The foam system comprises a clear water tank and a foam box, and further comprises a foam electromagnetic valve, a water flow switch, a foam hose, a water outlet hose, a tee pipe and a high-pressure cleaning machine, wherein the foam tank is arranged at the upper end of the clear water tank; a float ball valve is arranged in the clear water tank; the tank bottom of the foam tank is connected with the foam electromagnetic valve through a pipe; the foam electromagnetic valve is connected with the tee pipe through the foam hose; the tank bottom of the clear water tank is connected with the water flow switch through the pipe; the water flow switch is connected with the tee pipe through the water outlet hose; one end of the tee pipe is connected with the foam hose, another end of the tee pipe is connected with the water outlet hose, and the third end of the tee pipe is connected with the high-pressure cleaning machine; an output end of the high-pressure cleaning machine is connected with a spray gun; the float ball valve, the foam electromagnetic valve, the water flow switch and the high-pressure cleaning machine are respectively connected with a control circuit board. The self-service car washing machine and the foam system thereof provided by the invention has advantages of simple structure, low cost, no requirement for water quality, long foam storage time and high foam utilization rate.

Description

technical field [0001] The invention relates to the field of car cleaning equipment, in particular to a self-service car washing machine and a foam system thereof. Background technique [0002] With the rapid popularization of automobiles, the vehicle cleaning industry is booming. The working principle of the self-service car washing machine is to wet the car body with clean water first, then spray it with a foam gun to cover the car body, rinse it with clean water after a few minutes, and finally use a vacuum cleaner to vacuum the inside of the car. There are two ways to use the foam system of the existing self-service car washing machine: (1) Direct suction type: the foam and water are mixed in a ratio of 1:100 and then directly added to the foam tank, and the foam is directly absorbed by the high-pressure cleaner when spraying the foam during car washing After the liquid is pressurized, it is sprayed out with a spray gun. The disadvantages of this method are: a. The amo...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: a. The amount of foam used is large. After the 100-liter foam box is filled with foam, the foam will be used up in less than 1 day when the car wash volume is large. It can wash 30 cars at most and requires manual labor. Adding foam continuously wastes manpower and material resources, which violates the original intention of the self-service car washing machine, which is convenient, quick and manpower-saving

This method solves the shortcoming of frequent foam addition of the direct suction type, but creates more problems: a. High cost, the price of the automatic hydrodynamic proportional pump is between 800 and 1000 yuan, plus water tank, solenoid valve low-pressure pump, etc. The cost of accessories is between 1200 and 1500, which increases the manufacturing cost of the self-service car washing machine and loses its market competitiveness

b The structure is complex, and it is necessary to add additional structures such as filter water tanks, low-pressure pumps, solenoid valves, water level switches, control lines, and water supply pipelines. Problems in each link will affect the use and increase maintenance costs in the later period

c High requirements for water quality, automatic hydrodynamic proportional pumps have high requirements for water quality, if there are impurities in the water, it will affect the work of the proportional pump, and it cannot be used for a long time in some areas with poor water quality

dIn the hot summer, when the amount of car washing is small, due to the excessive blending ratio of foam and water, the foam liquid will deteriorate and stink within 2 days, seriously affecting the customer's intention to use and losing customers

Images