SU1423175A1 - Sprayer - Google Patents

Abstract

The invention relates to a device for spraying liquids and can be used for spraying and applying paints and varnishes when painting the surface of products. The purpose of the invention is to increase the reliability of work. For this purpose, the sprayer is equipped with a spacer in the form of a sleeve with radiator holes and torpedo sockets with seals covering the rod, connecting the piston and the spool of the air distribution device, and in the housing there is a separation chamber with an annular groove and drainage holes with This sleeve is hermetically installed in the separation chamber, and its radial holes are connected by an annular groove and drainage holes with the atmosphere. 2 Il.

Description

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I The invention relates to devices for splitting liquids and can be used for spraying and applying paints and varnishes when painting surfaces of products.

The purpose of the invention is to increase the reliability of work.

FIG. 1 shows the proposed sprayer; in fig. 2 - section AA on fg. one.

i The sprayer includes a housing 1 with a handle 2 and a spray head 3. The housing is made up of an air cylinder 4 with jyshkom 5 and a cover 6. In the pneumocycle 1nder 4 there is a piston 7 that is rigidly connected to the plunger 8. a valve 9 installed in the cavity 10 of the handle 2 and connected with the lever 11. In the handle 2, a channel 12 is made to receive compressed air into the cavity 10. The atomizer has an air distribution device that includes a piston 14 installed in the cavity 13 with a rod 15, connected with him dividing valve 16 mounted in the cavity 17, and the plunger 8 SE1Yazanny control zfyutnik 18.

The spray gun is equipped with a spacer in the form of an alley 19 with radial holes 20 with end sockets for seals 21 that waddle the rod 15. Sleeve 19 is hermetically mounted in the dividing chamber of the housing 1, made with annular flow through holes 22 and drainage holes 23, and | fixed support washer 24.

 The radial holes 20 of the sleeve 19 are covered by an annular groove 22 and drainage holes 23 with atmosphere. Channel 25 communicates cavity 10 with a cavity 17 of the distribution spool 16. Channels 26 and 27 communicate cavity 17 with a cavity of a pneumatic cylinder 4. Channel 28 is associated with the atmosphere.

 The spray works as follows, g

When the lever 11 is pressed, the starting valve 9 opens and the compressed air from the cavity 10 flows through channel 25 into the cavity 17 of the distribution spool 16 and through channel 27 into the pre-piston part of the pneumatic cylinder 4. Under compressed air pressure, the piston 7 moves into the neutral cylinder and mixes the plunger 8 to the right while the paint from the tank 29 enters the spray. The percussion head 3. Air from the locking cavity of the pneumatic cylinder 4 exits through channel 28 into the atmosphere. O, at the same time, compressed air from cavity 17 flows through channel 30 and cavity 31 of control spool 18 into sub-piston part of cavity 13. Compressed air creates pressure on piston 14 and holds (.MO r, rightmost position.

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When the piston 7 is moved to the extreme right position, the control spool 18 also moves to the extreme right position, and the cavity of the control spool 18 is connected by channel 30 to channel 32. The compressed air enters the piston part of the cavity 13 and creates pressure on piston 14.

The piston 14 is displaced to the left and through the rod 15 moves the distribution valve 16 to the extreme left position. When this compressed air from the cavity 17 enters through the channel 26 in zaporshnevuyu part of the cavity of the pneumatic cylinder 4 and creates

, pressure on the piston 7. Under air pressure, the piston moves to the left and moves the plunger 8, which squeezes the paint through the spray head, sprays it. At the same time, the air from the pre-piston part of the cavity of the pneumo0 of the cylinder 4 leaves through the channel 28 to the atmosphere. When the piston 7 reaches the leftmost position, the control valve 18 is reversed. Thus, the piston 7 with the plunger 8 performs a reciprocating motion, ensuring that the paint is sprayed and applied to the painted surface of the product.

In the proposed sprayer, air is not allowed to flow from the cavity 17.

n distribution valve 16 into the zaporshnevuyu part of the cavity 13 and the creation of a counter-pressure on the piston 14 when the seals 21 of the rod 15 are worn due to the implementation in the housing of the separation chamber communicated in space with the atmosphere that

5 increases the reliability of the sprayer.

Claims (1)

Invention Formula An atomizer comprising a housing with a handle and a spray head, a pneumatic cylinder with a piston and a plunger, a starting device and an air-distributing device including a piston with a rod installed in the housing cavities, and a distribution valve connected to it. A spool-controlled spool associated with the plunger, characterized in that, in order to increase reliability of operation, the atomizer is provided with a spacer in the form of a sleeve with radial bores and end sockets with seals covering the stem, The connecting piston and the spool of the air-distributing device have a separating chamber with an annular groove and drainage holes, the sleeve is sealed in the separating chamber and its radial holes are connected to the atmosphere by the annular groove and drainage holes. 1  19 W 21 9a.d, g 15 16