SU1434412A1 - Pressure controller - Google Patents

Abstract

The invention relates to a technique for the automatic regulation of pneumatic devices and mechanisms, in particular, to pressure regulators, and can be used for switching the compressor to the Idle and Working stroke modes. The aim of the invention is to simplify, increase reliability, manufacturability and expand the functionality of the controller. The regulator includes a housing 1, inside of which are placed rigidly interconnected by a stem 2, an operating 3 and a relief valve 4. The housing is divided into chambers 9, 11, 13, 15, 17, which are pneumatically interconnected in such a way that the flow of working fluid from one chamber to another leads to control of the valves. 1 hp f-ly, 1 ill.

Description

11 13 1 15

12 G6

four

 N9

13

The invention relates to the automatic regulation of pneumatic devices and mechanisms, in particular to pressure regulators, and can be used to switch the compressor to the Idle and Working modes.

The aim of the invention is to simplify, increase reliability and technology and expand the functional capabilities of the controller,

The figure shows the pressure regulator described.

The regulator comprises a housing 1, along the axis of which the working 3 and waste 4 valves connected to each other by means of the rod 2 and interacting with the saddles 5, 6 are installed through the sealing elements 7.8,

The casing has a pneumatic control cavity, a stabilized pressure chamber 9 connected via a channel 10 with an external stabilized pressure source, an inlet chamber 11 connected to the main reservoir via an inlet channel 12, the first chamber 13 connected through a first choke 14 to a second chamber 15 connected through the output channel 16 with the discharge device of the compressor, the intermediate chamber 17, connected to the atmosphere through the second throttle 18. Discharge valve 4 is installed on the bottom of the glass 19, the operating valve 3 - on the piston 20

The pressure regulator operates as follows.

When the compressor is turned on in the main tank, the pressure of the working fluid begins to increase, which through the stabilized pressure source and the channel 10 enters the chamber 9, through the inlet channel 12 into the chamber 11, then through the chamber 13, the throttle

14 and chamber 15 - into chamber 17 and, acting on valve 4, displaces it

in the guard from the saddle 6, while the valve 3 sits on the saddle 5, sealing the sealing element 7 with chamber P, the working fluid from the chambers 13,

15 and 17 go out into the atmosphere along the throttles of m 14.18. The pressure on both sides of valve 3 in chambers 9.11 grows the same, but since its area is facing towards chamber 9, it is larger than the area facing towards camera

1 1, kg-tread 3 is firmly pressed to the saddle 5,

The pressure in chamber 9, gradually age, cannot exceed the stipulated maximum, as it flows through a source of stabilized pressure, and the pressure in chamber 11 rises linearly, and there comes a moment when it exceeds the force of pressing valve 3 to the saddle 5. Valve 3 departs from the seat 5 and the working fluid fills the chamber 13, which causes a sharp displacement of the valve 3 towards the seat 5 and the fit of the valve 4 to the seat 6.

The working fluid through the throttle 14 enters the chamber 15 and then through the output channel 16 acts on the discharge mechanism of the compressor, stopping the injection of compressed air into the main tank. After that, the pressure in the chambers 11,13,15 starts to fall, and in the chamber 9 it remains constant. When the pressure equilibrium is reached, the working fluid from chamber 15 begins, through the seal (8), to leak into chamber 17, while valve 3 abruptly sits on seat 5, simultaneously opening valve 4, working fluid from chambers 13,15 and 17 through chokes 14,18 goes into the atmosphere. At the same time, the pressure in channel 16 weakens, ceasing the effect on the compressor discharge mechanism, which again begins to force compressed air into the main tank, and the operating cycle of the regulator is repeated in the order described above.

If necessary, the compressor can be switched from the Run mode to the Idle mode and vice versa, manually acting on the valve 4,

The proposed controller allows reducing the overall dimensions of the device, does not require adjustment work, includes only one moving part — a brush with two valves at the ends, which greatly simplifies the design, increases the degree of reliability of the device and pneumatic automation system as a whole. The design of the regulator is technologically advanced, it has no springs.

Claims (2)

1. A pressure regulator, comprising a housing with inlet, outlet and discharge channels, in which operating and discharge valves are installed, which are rigidly interconnected, so that it is so that, in order to simplify neither, increase of reliability, manufacturability and expansion of functionality, working and discharge valves are connected by a rod installed in a cavity divided by a partition into two chambers interconnected through the first choke, the first of which is connected through the working valve with the inlet channel, second - with the output channel and through the valve, the intermediate chamber and the throttle - with the discharge channel, with the working valve mounted on the piston forming the pneumatic control cavity with the body, 2. A regulator according to any one of the preceding paragraphs, 1, and 1 t, which is based on the fact that the relief valve is installed at the bottom of the glass, which is installed on the outer cylindrical part of the body.