Novel wall paint spraying equipment

Abstract

The novel wall paint spraying equipment comprises a wall paint spraying equipment body, a valve, an air compressor and a cleaning mechanism, the cleaning mechanism comprises a tank, a liquid outlet pipe, electromagnetic valves and a pressure switch, the liquid outlet pipe is mounted at the upper end of the tank, connecting pipes are mounted on one side of the liquid outlet pipe of the tank, the lower end of the first electromagnetic valve and the lower end of the pressure switch are connected with the upper ends of the two connecting pipes respectively, and the upper end of the first electromagnetic valve is connected with an exhaust pipe of the air compressor. A liquid adding pipe and a sealing cover are mounted on the tank body on the other side of the liquid outlet pipe; the upper end of the liquid outlet pipe is connected with the lower end of a second electromagnetic valve, the upper end of the second electromagnetic valve is provided with a glue outlet pipe, and the upper end of the glue outlet pipe is provided with a cleaning seat; a spray gun glue inlet pipe of the wall paint spraying equipment body is connected with one ends of the two manual valves in parallel, and the other ends of the two manual valves are connected with a glue outlet hose and one end of a waste liquid glue pipe of the wall paint spraying equipment body respectively. The spray gun can be automatically cleaned, convenience is brought to cleaning work of workers, and the working efficiency is correspondingly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of spraying equipment, in particular to a novel wall paint spraying equipment. Background Art

[0002] In interior decoration, latex paint and the like are applied to the wall manually or automatically to beautify the wall. Manually brushing the wall with a brush is time-consuming and laborious, and has low work efficiency. Therefore, the automatic latex paint spraying equipment (also called wall paint spraying equipment, hereinafter simply referred to as automatic spraying equipment) has been widely used because it reduces the labor intensity of workers and has high work efficiency. The general structure of the automatic spraying equipment includes an electric glue pump and a spray gun installed on a movable trolley. The spray gun and the glue outlet of the electric glue pump are connected by a glue outlet hose. During operation, the electric glue pump pumps out and pressurizes the latex paint in the glue bucket and pumps it into the spray gun. The worker can hold the spray gun to spray the wall (when the worker presses the handle of the spray gun backward, the pressurized glue is sprayed out in a mist from the nozzle at the front end of the spray gun).

[0003] Although the existing automatic spraying equipment meets the need of relatively efficient spraying operation to a certain extent, due to structural limitations, there are still some drawbacks that need to be improved urgently. Specifically, the atomization holes of the nozzle of the spray gun and the inner diameter of the pipeline in the spray gun are small. In order to ensure that the inside will not be blocked due to the drying of the residual latex paint, etc., after each use, the spray gun needs to be removed and the nozzle, etc. need to be disassembled, and the inside needs to be cleaned with banana water, etc.; the above cleaning method is inconvenient for workers because it requires workers to disassemble and assemble the nozzle, etc., and also requires manual cleaning of the nozzle and the inside of the spray gun, and correspondingly is not conducive to improving work efficiency. Summary of the Utility Model

[0004] In order to overcome the drawbacks of the existing automatic spraying equipment that requires manual cleaning of the spray gun due to structural limitations as described in the background, the utility model provides a novel wall paint spraying equipment based on the wall paint spraying equipment body. After each use, the worker can, through simple operations of the manual valve and the power switch, make the pressurized cleaning solvent flow backward into the spray gun through the front end of the nozzle, thereby achieving the purpose of automatically cleaning the nozzle and the internal pipeline of the spray gun, which brings convenience to the worker and correspondingly improves work efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] New wall paint spraying equipment, including the body of the wall paint spraying equipment, valves, and an air compressor, is characterized in that it also has a cleaning mechanism; the cleaning mechanism includes a tank body, a liquid outlet pipe, solenoid valves, and a pressure switch. There is an opening at the upper end of the tank body. The outer side of the liquid outlet pipe is installed in the opening. A connecting pipe is installed on the tank body on one side of the liquid outlet pipe. There are two solenoid valves. The lower ends of the first solenoid valve and the pressure switch are respectively connected to the upper ends of the two connecting pipes. The upper end of the first solenoid valve is connected to the exhaust pipe of the air compressor. A liquid adding pipe and a sealing cover are installed on the tank body on the other side of the liquid outlet pipe; the upper end of the liquid outlet pipe is connected to the lower end of the second solenoid valve. The upper end of the second solenoid valve is installed with a glue outlet pipe, and the upper end of the glue outlet pipe is installed with a cleaning seat; there are two valves. One end of the glue inlet pipe of the spray gun of the wall paint spraying equipment body is respectively connected in parallel with one end of the two valves. The other ends of the two valves are respectively connected to one end of the glue outlet hose and the waste liquid hose of the wall paint spraying equipment body. The other end of the waste liquid hose is located in the waste liquid tank; the power output of the pressure switch is connected to one end of the power input of the first solenoid valve.

[0007] Further, the solenoid valve is a normally closed spool solenoid valve. The upper end of the liquid outlet pipe is located outside the upper end of the tank body, and the lower end of the liquid outlet pipe is at a certain distance from the inside of the tank body.

[0008] Further, the upper end of the cleaning seat is of an open structure and a sealing gasket is installed at the inner side end. The outer shapes of the upper ends of the cleaning seat and the sealing gasket are the same as the outer shape of the front outer side of the nozzle of the spray gun.

[0009] Further, the pressure switch is an adjustable normally closed contact electrical contact pressure switch.

[0010] Further, a cleaning solvent is filled in the tank body.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: Based on the body of the wall paint spraying equipment, after each use, the staff can, through simple operations on the manual valve and the power switch, put the front end of the spray gun head into the inner side end of the cleaning seat. Then, the compressed air output by the air compressor will drive the cleaning agent to enter from the front end of the nozzle and flow out from the rear end. Since the cleaning solvent with pressure flows back into the spray gun through the front end of the nozzle, the purpose of automatically cleaning the nozzle and the internal pipeline of the spray gun can be achieved, which brings convenience to the cleaning work of the staff and correspondingly improves the work efficiency. In summary, the present utility model has a good application prospect. Description of the Drawings

[0012] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0013] Figure 1 、 2 is the overall structural schematic diagram of the present utility model.

[0014] Figure 3 is the circuit diagram of the present utility model. Detailed implementation mode

[0015] Figure 1 、 2 As shown in Figures 1, 2, and 3, the new wall paint spraying equipment includes the wall paint spraying equipment body 1, manual valves 21 and 22, power switch S1, air compressor M ( Figure 1 not shown in the figure), power supply module W1, and also has a cleaning mechanism; the cleaning mechanism includes a tank body 31, a liquid outlet pipe 32, solenoid valves DC and DC1, and a pressure switch T. There is an opening in the middle of the upper end of the tank body 31. The outer side of the upper part of the liquid outlet pipe 32 is hermetically welded in the opening. Two connecting pipes communicating with the inside of the tank are welded on the left side of the liquid outlet pipe. There are two manual valves 21 and 22, and two solenoid valves DC and DC1. The lower end of the first solenoid valve DC and the lower end of the pressure switch T are respectively connected to the upper parts of the two connecting pipes by threads. The upper end of the first solenoid valve DC is connected to the exhaust pipe of the air compressor by a flexible hose. A liquid adding pipe 33 communicating with its inside is welded on the right side of the upper end of the tank body 31. A sealing cover 34 is hermetically installed at the upper end of the liquid adding pipe 33 by threads (open the sealing cover 34 to add cleaning solvent, banana water, etc. into the tank); the upper end of the liquid outlet pipe 32 is located outside the upper end of the tank body 31. The lower end of the second solenoid valve DC1 at the upper end of the liquid outlet pipe 32 is connected by threads. A glue outlet pipe 4 is installed at the upper end of the second solenoid valve DC1. A semi-conical cleaning seat 5 is welded at the upper end of the glue outlet pipe 4. The lower end of the cleaning seat 5 communicates with the liquid outlet pipe 4; the glue inlet pipe 102 of the spray gun 101 of the wall paint spraying equipment body 1 is connected to the first end of a three-way pipe by threads. The second end and the third end of the three-way pipe are respectively connected to one end of the two manual valves 21 and 22 by pipe joints. The other ends of the two manual valves 21 and 22 are respectively connected with a branch pipe. The lower end of one of the branch pipes is hermetically sleeved and connected to the upper end of the glue outlet hose 103 of the wall paint spraying equipment body 1. The side end of the other branch pipe is connected with a waste liquid hose 104 (removed during spraying operation). The lower end of the waste liquid hose 104 is located in a waste liquid tank (not shown in the figure); the power supply module W1 and the power switch S1 are installed in the component box 6, and the component box 6 is installed on the front outer side of the tank body 31.

[0016] Figure 1 、 2, as shown in FIGS. 3, the solenoid valves DC and DC1 are normally closed spool solenoid valves; the lower end of the liquid outlet pipe 32 is spaced from the inside of the tank body 31 by a distance (2 mm). The upper end of the cleaning seat is of an open structure, and a sealing rubber pad 105 is adhesively bonded to the inner side end. There is an opening at the lower end of the rubber pad 105. The outer shape of the upper ends of the cleaning seat 5 and the rubber pad 105 is the same as the outer shape of the front outer side of the nozzle 106 of the spray gun. The pressure switch T is an adjustable normally closed contact electrical contact pressure switch. The cleaning solvent such as banana water is filled in the tank body 31. The power input terminals 1 and 2 of the power module W1 are respectively connected to the two poles of the AC 220V power supply through wires. The positive power output terminal 3 of the power module W1 is connected to the power input terminal of the power switch S1 and the power input terminal of the pressure switch T through wires. The power output terminal 3 of the power switch S1, the negative power output terminal 4 of the power module W1 and the power input terminal of the second solenoid valve DC1 are connected through wires. The power output terminal of the pressure switch T, the negative power output terminal 4 of the power module W1 and the power input terminal of the first solenoid valve DC are connected through wires. Figure 3 , the power module W1 is a finished product of an AC 220V to DC 12V switching power supply module; the solenoid valves DC and DC1 are normally closed spool solenoid valves; the pressure switch is an adjustable pressure type normally closed contact pressure switch (electrical contact) of model PS20 - SGN.

[0017] Figure 1 , 2As shown in FIGS. 1 and 3, this new type is based on the wall paint spraying equipment body 1. Before spraying, the equipment is transferred to the spraying position by a trolley. The glue inlet pipe 102 of the spray gun 101 and the outlet of the electric glue pumping pump 107 are connected through a glue outlet hose 103. During operation, the electric glue pumping pump 107 pumps out the latex paint in the glue bucket, pressurizes it, and pumps it into the spray gun 101. The operator can hold the spray gun 101 to perform spraying operations on the wall (when the operator presses the handle 1011 backward, the pressurized glue is sprayed out in a mist from the nozzle 106 at the front end of the spray gun). The above is existing and mature technology, and this application does not claim any protection for the above technical solution. After the AC 220V power supply enters the power input terminal of the power module W1, the stable DC 12V power supply output from pins 3 and 4 of the power module W1 enters the power input terminals of the power switch S1 and the pressure switch T. When the pressure in the tank is lower than a certain value (for example, less than 0.05 Mpa), the internal contacts of the pressure switch T close. In this way, the solenoid valve DC is energized and its spool opens, and the high-pressure air in the air compressor storage tank enters the tank 21 through the exhaust pipe. When the air pressure in the tank is higher than 0.05 Mpa, the internal contacts of the pressure switch T will open, and the solenoid valve DC loses power and its spool closes; through the above, the pressure in the tank can always be maintained at an appropriate level. In this new type, before spraying, valve 21 is opened and valve 22 is closed to ensure that the latex paint can enter the spray gun. After spraying is completed, valve 21 is closed and valve 22 is opened, and the waste liquid hose 104 connected to valve 22 is connected (first remove the glue outlet hose 103). Then, the operator vertically and slightly forcefully inserts the front end of the spray gun head 101 into the inner end of the cleaning seat 5 (the two fit tightly), and turns on the power switch S1. In this way, the solenoid valve DC1 is energized and its spool opens, and the compressed air output by the air compressor drives the cleaning agent to be output from the liquid outlet pipe 32 from bottom to top and enter the cleaning seat 5, then enter the spray gun through the spray holes at the front end of the nozzle of the spray gun, and finally enter the waste liquid bucket through the waste liquid hose 104 (the cleaning solvent that enters the waste liquid bucket can be reused after precipitation). Since the pressurized cleaning solvent flows backward into the spray gun through the front end of the nozzle, the purpose of automatically cleaning the nozzle and the internal pipeline of the spray gun can be achieved, preventing blockage of the pipeline and the nozzle. This new type brings convenience to the cleaning work of the operator and correspondingly improves work efficiency. In summary, this new type has good application prospects.

[0018] The foregoing has shown and described the basic principles, main features and advantages of the present invention. For those skilled in the art, it is obvious that the present invention is limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes that fall within the meaning and scope of the equivalent elements of the claims in the present invention.

[0019] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A new type of wall paint spraying device, including the wall paint spraying device body, a valve, and an air compressor, is characterized in that, It also has a cleaning mechanism; the cleaning mechanism includes a tank body, a liquid outlet pipe, a solenoid valve, and a pressure switch. There is an opening at the upper end of the tank body. The outer side of the liquid outlet pipe is installed in the opening. A connecting pipe is installed on the tank body on one side of the liquid outlet pipe. There are two solenoid valves. The lower ends of the first solenoid valve and the pressure switch are respectively connected to the upper ends of the two connecting pipes. The upper end of the first solenoid valve is connected to the exhaust pipe of the air compressor. A liquid adding pipe and a sealing cover are installed on the tank body on the other side of the liquid outlet pipe; the lower end of the second solenoid valve is connected to the upper end of the liquid outlet pipe. The upper end of the second solenoid valve is installed with a glue outlet pipe, and the upper end of the glue outlet pipe is installed with a cleaning seat; there are two valves. The glue inlet pipe of the spray gun of the wall paint spraying equipment body and one end of the two valves are respectively connected in parallel. The other ends of the two valves are respectively connected to the glue outlet hose and one end of the waste liquid hose of the wall paint spraying equipment body. The other end of the waste liquid hose is located in the waste liquid tank; the power output of the pressure switch is connected to one end of the power input of the first solenoid valve.

2. The novel wall paint spraying device according to claim 1, characterized in that, The solenoid valve is a normally closed spool solenoid valve. The upper end of the liquid outlet pipe is located outside the upper end of the tank body, and the lower end of the liquid outlet pipe is at a certain distance from the inside of the tank body.

3. The novel wall paint spraying device according to claim 1, characterized in that, The upper end of the cleaning seat is of an open structure and a sealing gasket is installed on the inner side end. The outer shapes of the upper ends of the cleaning seat and the sealing gasket are the same as the outer shape of the front side of the nozzle of the spray gun.

4. The novel wall paint spraying device according to claim 1, characterized in that, The pressure switch is an adjustable normally closed contact electrical contact pressure switch.

5. The novel wall paint spraying device according to claim 1, wherein, A cleaning solvent is filled in the tank body.

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