CN210454748U

CN210454748U - Foam proportioning pump protection device

Info

Publication number: CN210454748U
Application number: CN201920700951.8U
Authority: CN
Inventors: 陈榆仁
Original assignee: Zhuhai Dongfang Shenglong Technology Co ltd
Current assignee: Zhuhai Dongfang Shenglong Technology Co ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-05-05
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses a foam proportioning pump protection device, which comprises a water inlet pipe, a foam proportioning pump, a solenoid valve, a high-pressure pump and a spray gun; the inlet tube is equipped with first tributary union coupling solenoid valve and foam ratio pump, is equipped with second tributary union coupling high-pressure pump and spray gun, passes through the foam union coupling between foam ratio pump and the first tributary pipe. The utility model discloses an in the control circuit unit, add solitary solenoid valve, control foam ratio pump and being connected of pipeline, the high-pressure pump is at the during operation, because of not inclosed pressure device in the high-pressure pump, the gap that exists such as turbine blade to the condition that produces the suck-back takes place, and the solenoid valve separates between with water pipe and the foam ratio pump, prevents to damage high-pressure pump and foam ratio pump, causes maintenance, cost of maintenance to increase.

Description

Foam proportioning pump protection device

Technical Field

The utility model relates to an automation equipment technical field, in particular to foam ratio pump protection device.

Background

A traditional carwash is provided with a high-pressure water gun connected with tap water and a plurality of large towels, and the traditional carwash is mainly equipped with a plurality of conventional carwash. The phenomenon of wasting water for washing the car is serious, the car washing equipment by circulating water in the car washing house is arranged, a large amount of clear water is stolen for washing the car, and the water-saving application cannot be popularized. Statistically, more than 1 hundred million tons are consumed annually throughout the country in this car wash. The miniature self-service car washer takes place at will, does not occupy too big place, distributes different places, and the pressure of car wash shop slowly provides convenience for people simultaneously.

In the automatic car washer, adopt the foam proportioning pump to replace water pump and detergent pump among the traditional self-service car washer, the foam proportioning pump leads to pipe and high-pressure pump intercommunication, but because increasing the pump and not a confined pressure device, have a lot of gaps, at work, because after self priming pump closes or opens the valve on the export pressurized-water pipe, the water in the water pipe is kept motionless for the pipeline suck-back, then join with the water that rotates the backward water pore flow of opposite direction and come, flow along the spiral case. The liquid continuously impacts the blade grids in the volute and is continuously crushed by the impeller, the liquid and the air are intensively stirred and mixed to generate an air-water mixture, the air-water mixture continuously flows to cause that the air and the water cannot be separated, and the back suction generated by the high-pressure pump and the foam proportioning pump connected with the pressure pump through a pipeline can damage parts in the foam proportioning pump, thereby causing the increase of later maintenance and maintenance cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a can prevent that the pump from opening or closing the valve on the export pressurized-water line after, producing reaction force for the foam ratio pump protection device of pipeline suck-back.

In order to solve the technical problem, the utility model discloses a technical scheme does:

a foam proportioning pump protection device comprises a water inlet pipe, a foam proportioning pump, an electromagnetic valve, a high-pressure pump and a spray gun; the inlet tube includes first tributary pipe and second tributary pipe, first tributary union coupling solenoid valve and foam ratio pump, second tributary union coupling high-pressure pump and spray gun.

In a preferred embodiment, a foam pipe is arranged between the foam proportioning pump and the first branch pipe.

As a preferred embodiment, a first three-way valve is arranged between the water inlet pipe and the first branch pipe and between the water inlet pipe and the second branch pipe, and a second three-way valve is arranged between the foam pipe and the first branch pipe.

In a preferred embodiment, the foam proportioning pump is provided with a detergent suction pipe, and the detergent suction pipe is connected with a detergent storage box.

In a preferred embodiment, the solenoid valve, the foam proportioning pump, the high pressure pump and the three-way valve are all controlled by a centralized control unit.

The above technical scheme is adopted in the utility model, through in the control circuit unit, add solitary solenoid valve, control foam ratio pump and being connected of pipeline, the separation has a lot of gaps because of the high-pressure pump is not inclosed pressure device, produces the condition of suck-back, prevents effectively that foam ratio pump from being damaged its inner structure by the suck-back effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural view of the foam proportioning pump protector of the present invention;

FIG. 2 is a circuit diagram of a centralized control unit of the foam proportioning pump protection device of the present invention;

in the figure, 10-water inlet pipe, 20-first branch pipe, 21-second branch pipe, 30-first three-way valve, 31-second three-way valve, 40-electromagnetic valve, 50-foam proportioning pump, 60-detergent suction pipe, 61-detergent storage box, 62-foam pipe, 70-high pressure pump, 71-spray gun.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

As shown in fig. 1, a foam proportioning pump protection device comprises a water inlet pipe 10, a foam proportioning pump 50, an electromagnetic valve 40, a high-pressure pump 70 and a spray gun 71; the water inlet pipe 10 comprises a first branch pipe 20 and a second branch pipe 21, the first branch pipe 20 is connected with the electromagnetic valve 40 and the foam proportioning pump 50, the second branch pipe 21 is connected with the high-pressure pump 70 and the spray gun 71, and a foam pipe 62 is arranged between the foam proportioning pump 50 and the first branch pipe 20 for connection.

Further, a first three-way valve 30 is arranged between the water inlet pipe 10 and the first branch pipe 20 and the second branch pipe 21, and a second three-way valve 31 is arranged between the foam pipe 62 and the first branch pipe 20; the foam proportioning pump 50 is provided with a detergent suction pipe 60, and the detergent suction pipe 60 is connected with a detergent storage box 61; the solenoid valve 40, the foam proportioning pump 50, the high pressure pump 70, the first three-way valve 30 and the second three-way valve 31 are all controlled by a centralized control unit.

As shown in fig. 2, the centralized control unit includes a power supply, a protection switch K, a transformer, a digital electric meter, a first relay K1, a second relay K2, a third relay K3, a fourth relay K4 and a third relay K5; the power supply, the protection switch K and the transformer are connected in series; the digital electric meter is connected with a first relay K1, a second relay K2, a third relay K3, a fourth relay K4, a fifth relay K5 and a digital electric meter in parallel, and a power supply, a protection switch K and a transformer are connected in parallel, wherein R1 and R2 are three-way valves, R5 is a foam proportioning pump 50, R3 is a high-pressure pump 70, and R4 is an electromagnetic valve 40.

It can be understood that when the protection switch K is turned on, the current is turned on, the ac current passes through the transformer, the ac current is reduced to dc current, the first relay K1 is closed, the first three-way valve 30 is opened, the fourth relay K4 and the fifth relay K5 are closed at the same time, the foam proportioning pump 50 is started, part of the detergent is pumped from the detergent storage box 61 to the foam proportioning pump 50 through the detergent suction pipe 60, meanwhile, the clean water flows from the water inlet pipe 10 through the first three-way valve 30, flows into the second branch pipe 21, and enters the foam proportioning pump 50 through the opened electromagnetic valve 40, and is adjusted to the concentration suitable for car washing, and at this time, the second relay K2 and the third relay K3 are in the off state.

After the detergent is prepared, the first relay K1 and the fourth relay K4 are opened, the second relay K2 and the third relay K3 are closed, the first three-way valve 30 and the electromagnetic valve 40 are closed, the second branch pipe 21 stops water inflow, the second three-way valve 31 and the high-pressure pump 70 are started, the detergent in the foam proportioning pump 50 passes through the foam pipe 62, is collected into the second branch pipe 21 through the second three-way valve 31, and is pressurized by the high-pressure pump 70 to spray foam from the spray gun 71.

It can be understood that when the fifth relay K5 is opened, the foam proportioning pump 50 stops working, the fourth relay K4 is kept open, the first relay K1, the second relay K2 and the third relay K3 are closed, the first three-way valve 30, the second three-way valve 31 and the high-pressure pump 70 are opened, clean water is collected into the first branch pipe 20 from the water inlet pipe 10, pressurized by the high-pressure pump 70, and then sprayed out by the spray gun 71 for cleaning.

The utility model discloses an add solenoid valve 40 and lock second tributary tube 21 and foam ratio pump 50's intercommunication, prevent that high-pressure pump 70 from carrying out the suck-back at the during operation suction that produces, carry out suck-back to foam ratio pump 50 via second tributary tube 21, cause foam ratio pump 50 to damage, also can maintain high-pressure pump 70's stability simultaneously, reduce high-pressure pump 70 and close or open the valve on the export pressurized-water line after, because of the water of water pipe the inside remains can't live, make the condition of pipeline suck-back take place. The utility model discloses a foam ratio pump protection device can protect foam ratio pump 50, avoids the suck-back of high-pressure pump, reduces maintenance, cost of maintenance, prolongs its life.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. A foam proportioning pump protection device which characterized in that: comprises a water inlet pipe (10), a foam proportioning pump (50), an electromagnetic valve (40), a high-pressure pump (70) and a spray gun (71); the water inlet pipe (10) comprises a first branch pipe (20) and a second branch pipe (21), the first branch pipe (20) is connected with the electromagnetic valve (40) and the foam proportioning pump (50), and the second branch pipe (21) is connected with the high-pressure pump (70) and the spray gun (71).

2. The foam proportioning pump protection device of claim 1, wherein: and a foam pipe (62) is arranged between the foam proportioning pump (50) and the first branch pipe (20).

3. The foam proportioning pump protection device of claim 2, wherein: the water inlet pipe (10) with be equipped with first three-way valve (30) between first lateral flow pipe (20) and second lateral flow pipe (21), be equipped with second three-way valve (31) between foam pipe (62) and first lateral flow pipe (20).

4. The foam proportioning pump protection device of claim 1, wherein: and a detergent suction pipe (60) is arranged on the foam proportioning pump (50), and the detergent suction pipe (60) is connected with a detergent storage box (61).

5. The foam proportioning pump protection device of claim 1, wherein: the electromagnetic valve (40), the foam proportioning pump (50), the high-pressure pump (70) and the three-way valve are all controlled by a centralized control unit.