SU1235544A1 - Apparatus for feeding a coating to sprayer - Google Patents

Description

The invention relates to the field of coating of various products, in particular, devices for delivering an abrasive coating to a sprayer, and can be used in various sectors of the national economy.

The purpose of the invention is to increase the reliability of work and expand the technological capabilities of the device.

Figure 1 shows the proposed device; figure 2 is a view of And figure 1; on fig.Z - section bb in figure 2.

The device consists of a tank 1, on the case of which a sealed cover 2 is mounted. A gear 3 is installed on the lid, transmitting the rotation from the electric motor to the mixer 4. The device also contains a hub 5 for loading the tank and a level sensor 6. Air is supplied to the internal cavity of the tank from the compressed air line via the pneumatic distributor 7 in order to create an overpressure in the tank. Pressure control is carried out by a pressure reducing valve 8 with a pressure gauge 9. The internal volume of the container is connected to a drain through a gate valve 10 with an electromagnetic drive. A distribution element 11 is installed on the container body. It is made in the form of a spring-loaded diaphragm valve, which consists of a housing 12 that has an opening for supplying the coating from the container and an opening for supplying the coating, water and compressed air to the spray gun, a rubber membrane 13 with a stop screw mounted on it 14, of the flange 15 fastened to the housing, of the spring 16, mounted on the stop screw and at one end resting on the flange post, and the other on the nut 17 attached to the stop screw. Through the valve with the electromagnet 18, pressure is supplied to the flange from the compressed air line. Water and compressed air are supplied to the diaphragm valve housing through shut-off valves 19 and 20 with an electromagnetic actuator for flushing and purging the sprayer. A pressure reducing valve 21 with a pressure gauge is installed to adjust the air pressure during purging. Compressed air is supplied to the atomizer through a pressure reducing valve 22 with a pressure gauge and a pneumatic distributor 23 with an electromagnet. Pipes 24 and 25 are installed to supply the coating and flushing medium.

The device works as follows.

When the device is turned on, the electromagnet 18 of the pneumatic distributor is turned on. The compressed air enters the distribution element 11, closing the supply holes of the coating from the container and supplying the coating to the atomizer. Then in

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the tank through the filler neck 5 pours the coating, turns on the drive of the agitator 4. When the sprayer is turned on, the pneumatic distributor 23 turns on, and the compressed air flows to the sprayer, and the pneumatic distributor electromagnet 18 is turned off. The spring 16 returns the membrane 13 to its original position, the holes in the housing 12 are opened, and the coating from the container enters the atomizer. The internal cavity of the container is in this case communicated with the atmosphere through a pneumatic valve 7.

It is also possible to operate the sprayer with excessive pressure in the tank. In this case, pneumatic valve 7 is turned on, and compressed air enters the container. When disconnecting the spreader, the electromagnet turns on the distributor 18, the distribution element I closes and stops the flow of the coating along the pipeline 24 to spray. by. The electromagnet of the pneumatic distributor 23 is turned off, stopping the supply of compressed air to the atomizer, the electromagnet of the pneumatic distributor 7 is turned off, stopping the supply of compressed air to the container. During interruptions in operation, in order to avoid sedimentation and solidification of coating B with supply line 24 and sprayer, it is necessary to perform flushing and blowing. When flushing, the electromagnets of the valve 19 and the pneumatic distributor 23 and B include the atomizer supplying water and compressed air.

When the level of coating in the tank is reduced to the lowest, the level 6 sensor is triggered and the warning lamp turns on, indicating the need to refill the tank. After finishing work, the tank is rinsed. The filling of the tank with water during washing is performed either by pouring water through the neck 5 or filling it with water from the main. In this case, the electromagnet 18 of the pneumatic distributor is switched off, the electromagnets of the valves 10 and 19 are turned on. Water through the distribution element enters the tank and is discharged through the valve 10. After washing the tank, the water is discharged through the sprayer with supply of overpressure to the tank, i.e. with the electromagnet of the pneumatic distributor 7 turned on. To prevent the coating having abrasive With their properties, to stop valves. Fans 19 and 20. The latter are located most of its water level when washing the tank. For a smart day, the deposition on the walls of the tank while reducing the level of the coating when it is used up is made of a water-repellent material, for example, fluoride, polyethylene. The operation of the device can be controlled from the button on the control panel or from the CNC.

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Editor A. Sabo Order 3034/5

Compiled by Yu. Zhukov

Tehred I. VeresKorrektor T. Kolb

Circulation 681 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Claims (3)

1. DEVICE FOR SUBMITTING COATING TO A SPRAYER, including a tank, a pipe for supplying a coating in communication with it, a distribution element and a pipe for supplying a flushing medium, characterized in that, in order to increase the reliability of operation and expand the technological capabilities of the device, it is equipped with shut-off valves, installed on the pipeline for supplying a flushing medium, and the distribution element is placed on the tank at the inlet to the pipeline for supplying the coating, communicates with the outlet with the pipeline To feed the flushing medium and is designed as a spring loaded diaphragm valve. 2. The device according to π. 1, characterized in that the tank is equipped with elements for monitoring and controlling the liquid level and is made of water-repellent material. 3. The device according to paragraphs. 1 and 2, characterized in that the shut-off valves are located above the tank. FIG. 1 </) 1235544 A1