SU1480887A1 - Pulsed in atomizer - Google Patents

Abstract

The invention relates to a device for spraying a liquid and can be used in spraying apparatus in the chemical and other industries. The purpose of the invention is to improve the quality of the spray by automatically controlling the ratio of the flow rates of the liquid and the gas. For this, the pulsating pneumatic nozzle is equipped with an additional valve 10 installed in the pre-piston cavity 6 of the housing with the possibility of blocking the passage channel 8 of the piston 5, and the channel 2 of the fluid supply is in communication with the pre-piston cavity 6 of the housing. The piston 5 with the valve 9 is spring-loaded with a spring 11 placed between the valve 9 and the exhaust nozzle 4 connected to the housing with the possibility of axial movement. The amplitude and frequency of pulsation during the spraying of the fluid are regulated by selecting the stiffness of the spring 11 and the axial movement of the outlet nozzle 4 and the valve 9. 1 Cp. f-ly, 1 ill.

Description

The invention relates to devices for spraying liquids and can be used in spraying apparatus in the chemical and other industries.

The purpose of the invention is to improve the quality of the spray by automatically controlling the ratio of the flow rates of the liquid and gas.

The drawing shows a pulsation pump on a pneumatic nozzle.

The nozzle includes a hollow body 1 with a channel 2 for supplying liquid and a channel 3 for feeding compressed gas.

The outlet nozzle 4 is fixed to the housing 1 with the possibility of axial movement.

In the housing 1 there is a spring-loaded piston 5, which separates the housing into the pre-piston 6 and the non-piston 7 cavities.

The pre-piston cavity 6 communicates with the fluid supply channel 2, the anti-firing cavity 7 communicates with the compressed gas supply channel 3.

In the piston 5 is made of the passage channel 8, which communicates the channel 2 of the fluid supply with the exhaust nozzle 4. A valve 9 is connected to the piston 5, which is installed with the possibility of blocking the outlet from the piston cavity 7 to the exhaust nozzle 4.

The nozzle is equipped with an additional valve 10 installed in the pre-piston cavity 6 with the possibility of blocking the passage channel 8 of the piston 5.

The piston 5 with the valve 9 is spring-loaded with a spring 11 placed between the valve 9 and the exhaust nozzle 4.

The nozzle works as follows.

Liquid and gas under pressure, respectively, enter the pre-piston 6 and 7 piston cavity.

Under the pressure of the fluid, the piston 5 is displaced toward the outlet nozzle 4 and compresses the spring 11. At the same time, the valves 9 and 10 open.

Piston Cavity Fluid

6 Exits through channel 8 to exhaust nozzle 4. Gas from the nozzle cavity

7 exits into the exhaust nozzle 4 and disperses the liquid.

As a result of the liquid coming out of the cavity 6 and the gas from the cavity 7, the pressure in them decreases and the piston 5 under

the action of the spring 11 is shifted in the opposite direction and closes the valves 9 and 10.

The pressure in cavities 6 and 7 increases again and the spray cycle of the fluid repeats.

The release of a portion of the liquid and gas in the nozzle occurs in a single phase,

0 which improves the quality of the sprayed liquid.

The nozzle is provided with automatic control of the ratio of the flow rate of liquid and gas, which improves the quality of the spray.

The amplitude and frequency of pulsation during spraying of the fluid is regulated by selecting the spring stiffness and axial movement of the discharge nozzle.

0 4 and valve 10.

The arrangement of the regulating bodies of the exhaust nozzle 4 and the valve 10 outside the nozzle simplifies the process of regulating the spraying process.

five

Claims (2)

1. A pulsating pneumatic nozzle comprising a hollow body with 0 channels for supplying liquid and compressed gas, an exhaust nozzle, a spring-loaded piston dividing the housing into a pre-piston and a piston, communicated with a compressed gas supply channel 5 for cavities, a passage through the piston, connecting the fluid supply channel with the exhaust nozzle, and a piston connected to the piston overlapped 0 gas outlet from the pressure cavity into the exhaust nozzle, in order to improve the quality of the spray by automatically adjusting the ratio 5 flow of liquid and gas, it is equipped with an additional valve installed in the piston casing cavity with the ability to block the flow channel of the piston, and the feed channel 0 fluid communicated with the pre-piston cavity of the housing. 2. The injector according to claim 1, characterized in that the piston with the valve is spring-loaded with a spring disposed between the valve and the exhaust nozzle connected to the housing with the possibility of axial movement.