CN-121972345-A - Double-spray gun self-cleaning spraying system

Abstract

A double-spray gun self-cleaning spray system belongs to the technical field of spray equipment. The system comprises two spray guns, a pump body, a gas supply system, a pipeline system and a control valve group. The two spray guns are a first spray gun and a second spray gun respectively, and are connected with the pump body and the gas supply system to form an independent and intercommunicated spray loop. The control valve group is used for switching the working state of the spray guns, so that when one spray gun works, the other spray gun performs self-cleaning through a reverse suction mechanism. When the spray gun is blocked, the system can form reverse gas-liquid flow by starting the standby spray gun and switching the fluid flow direction, effectively remove the blocking object and discharge the blocking object through the standby spray gun, so that the automatic cleaning of the spray gun is realized. The system has the advantages of strong spray continuity, self-discharging blockage, maintenance-free intervention and the like, is suitable for various fields of industrial spraying, agricultural spraying and the like, and improves the spray efficiency and the equipment operation stability.

Inventors

• JI GUOZHAO
• Zhang Dongkuan
• YANG JUNCHAO
• DAI JIACHENG
• TIAN HONG
• REN TONG

Assignees

• 大连理工大学

Dates

Publication Date

20260505

Application Date

20260209

Claims (2)

1. 1. The double-spray gun self-cleaning spraying system is characterized by comprising a first spray gun (1), a second spray gun (2), a first stop valve (3), a second stop valve (4), a first one-way valve (5), a second one-way valve (6), a first three-way valve (7), a second three-way valve (8), a pump body (9) and a sleeve (10); The starting end of the inner channel of the sleeve (10) is connected with the pump body (9), the pump body (9) is used for conveying liquid into the sleeve (10), the starting end of the outer channel of the sleeve (10) is connected with an air source, the inner and outer channels of the sleeve flow liquid and air, and the starting end of the sleeve (10) is marked as a double-fluid supply main pipeline; The double-fluid supply main pipeline is respectively connected with the first spray gun (1) and the second spray gun (2) in parallel through a sleeve (10), and the two paths are respectively marked as a path A and a path B; a first three-way valve (7) is arranged on a sleeve (10) between the double-fluid supply main pipeline and the first spray gun (1), a branch A leading to the second spray gun (2) is additionally arranged at the position where the first three-way valve (7) is arranged, the section A of the branch only needs to be provided with an inner channel for conveying liquid, and a second stop valve (4) and a second one-way valve (6) are arranged on the branch A; a branch B is additionally arranged between the tail end of the double-fluid supply main pipeline and the passage B, the tail end of the branch B is arranged at the upstream of the branch A, a first stop valve (3) and a first one-way valve (5) are arranged on the branch B, and a second three-way valve (8) is arranged at the tail end of the branch B.
2. 2. The self-cleaning spraying system with double spray guns as in claim 1, wherein the pump body is high pressure pump and the three-way valve in the control valve set has two-way switching function.

Description

Double-spray gun self-cleaning spraying system Technical Field The invention relates to the technical field of spraying, in particular to a double-spray gun self-cleaning spraying system, and specifically relates to a double-spray gun system for cleaning spray gun blockage through a reverse suction mechanism. Background In conventional spray systems, the spray gun is prone to clogging from impurities in the liquid or solid particles during long term use. The blockage not only affects the spraying effect, but also can cause equipment to stop and maintain, and increase the production cost. While some solutions provide the gun cleaning function in the prior art, most solutions either rely on manual operation or require additional complex cleaning equipment. Accordingly, there is a need for a spray system that automatically cleans spray gun jams, improving spray system stability and operating efficiency. Disclosure of Invention The invention aims to provide a double-spray gun self-cleaning spray system, which can effectively clean the problem of spray gun blockage through a reverse suction mechanism and improve the automation level and the working efficiency of the spray system. The invention realizes the aim through the following technical scheme: A double-spray gun self-cleaning spray system comprises a first spray gun 1, a second spray gun 2, a first stop valve 3, a second stop valve 4, a first one-way valve 5, a second one-way valve 6, a first three-way valve 7, a second three-way valve 8, a pump body 9 and a sleeve 10; The starting end of the inner channel of the sleeve 10 is connected with the pump body 9, the pump body 9 is used for conveying liquid into the sleeve 10, the starting end of the outer channel of the sleeve 10 is connected with an air source, and the flow of the liquid and the air in the inner and outer channels of the sleeve is shown in fig. 2. The beginning of the sleeve 10 is marked as a double fluid supply main line; The double fluid supply main pipeline is respectively connected with the first spray gun 1 and the second spray gun 2 in parallel through a sleeve 10, and the two paths are respectively marked as a path A and a path B; A first three-way valve 7 is arranged on a sleeve 10 between the double-fluid supply main pipeline and the first spray gun 1, a branch A leading to the second spray gun 2 is additionally arranged at the position where the first three-way valve 7 is arranged, the branch A section only needs to be provided with an inner channel for conveying liquid, and a second stop valve 4 and a second one-way valve 6 are arranged on the branch A; A branch B is additionally arranged between the tail end of the double-fluid supply main pipeline and the passage B, the tail end of the branch B is arranged at the upstream of the branch A, a first stop valve 3 and a first one-way valve 5 are arranged on the branch B, and a second three-way valve 8 is arranged at the tail end of the branch B. Furthermore, the pump body is a high-pressure pump, can provide enough pressure liquid to support the self-cleaning function of spraying and reverse suction, and the three-way valve in the control valve group has a bidirectional switching function, so that the switching between spray guns and the on-off of reverse suction can be realized. The double-spray gun self-cleaning spray system has the beneficial effects that the problem of spray gun blockage is effectively cleared through a reverse suction mechanism, and the automation level and the working efficiency of the spray system are improved. Drawings FIG. 1 is a schematic diagram of the overall structure of a dual spray gun self-cleaning spray system. FIG. 2 is a schematic structural view of the sleeve. FIG. 3 is a schematic diagram of the working principle of the self-cleaning spraying system with double spray guns, wherein the first spray gun works normally and the second spray gun is closed. FIG. 4 is a schematic view of the second spray gun in operation, with the first spray gun closed. FIG. 5 is a schematic view of the first spray gun in a blocked state, and the second spray gun is used for cleaning the blockage by reverse suction. FIG. 6 is a schematic view of the second spray gun in operation when it is plugged, the first spray gun being reversed to draw suction to clear the plug. 1, A first spray gun; 2 a second spray gun, 3 a first stop valve, 4 a second stop valve, 5 a first one-way valve, 6 a second one-way valve, 7a first three-way valve, 8 a second three-way valve, 9 a pump body and 10 sleeves. Detailed Description In order to make the structural features, operation process and application effect of the invention easy to understand, the core idea of the invention will be clearly and completely explained below with reference to the drawings of the invention. Based on the present invention, other results that a person of ordinary skill in the art would achieve without making any inventive effort are within the scope of the present