SU1332279A1 - Pressure regulator - Google Patents

Abstract

The invention relates to pneumatic automation. The aim of the invention is to increase the reliability of the device. The device includes a housing 1 in which a check valve 2 is located, separating the inlet cavity 3 from the outlet cavity 4. In the housing 1 there are also installed a spring-loaded relief piston 5 with seals 6 and 7, the following piston 8, in the stem bore of which set the elastic element 9 with the possibility of interaction. the end 10 of its concave part with the surface of the housing 1, and the inner surface with the edge of the follower piston rod 8. The piston rod 8 has radial and axial channels and is pressed by adjustable springs 16 and 17. The regulator also has a safety valve 18. The device has the control cavity 19 of the piston 8, the cavity 20, the channel 21, which communicates the cavity 19 with the cavity 20, the atmospheric cavity 22, the channel 23, which communicates the output cavity 4 with the cavity 20. The cavity above the next rod 8 is in communication with the atmosphere. 3 il. (O (Lt 3 IS SAE CO tC 1C 4Y /

Description

This invention relates to pneumatic automation.

The aim of the invention is to increase the reliability of the controller,

Fig. 1 shows the pressure regulator, a general view; Fig. 2 shows the interaction zone of the elastic element with the follower piston rod and the housing in the initial position; Fig. 3 is the same in the position corresponding to the upper limit of the response of the pressure regulator.

The regulator includes a housing 1, in which a check valve 2 is placed, separating the inlet cavity 3 from the outlet cavity A, In the housing 1, a spring-loaded discharge piston -5 with seals 6 and 7 is also installed, the next piston 8, in the bore of which there is an elastic element 9 with the ability of the end face 10 of its concave part to interact with the surface 11 of the housing, and the internal surface 12 with the edge 13 of the follower piston 8, which has radial 14 and axial 15 channels and is compressed by adjustable springs 16 and 17. The controller also has the safety valve 18 and the control cavity 19 of the discharge piston 5, the cavity 20 of the follower piston 8, the channel 21 connecting the control cavity 19 with the cavity 20, the atmospheric cavity 22 and the channel 23 communicating the output cavity 4c of the cavity 20, the cavity above the next piston 8 communicated with the atmosphere oh,

The regulator works as follows

In the initial position, the following level 8 is in the lower position, compressed by springs 16 and 17, while the elastic element 9 with its end 10 interacts with the surface 11, and the control cavity 19 through the channel 21, the radial 14 and the axial 15 channels communicate with the atmosphere.

Compressed air from a compressor (not shown) enters the inlet cavity 3, opens the check valve 2 and enters the outlet cavity 4 and simultaneously through the channel 23 into the cavity 20. When a certain amount of pressure equal to the upper limit of the regulator is reached, the next piston 8 begins to move upwards, causing the edge 13 to sit

ten

15

20

332279. 2

on the inner surface 12 of the elastic element 9, and the connection of the cavity 19 with the atmosphere is terminated. Upon further movement of the piston 8 (Fig. 3), the end face 10 of the elastic element 9 detaches from the surface 11 of the housing 1, and compressed air passes through the channel 21 into the control cavity 19, the discharge piston 5 moves down and communicates the input cavity 3 with atmospheric cavity 22; Compressor unloading occurs.

When the compressed air pressure in the system drops to a value corresponding to the lower limit of the regulator's response, the follower piston 8 moves downwards under the action of the force of the springs-16 and 17, while the end face 10 of the elastic element 9 begins to interact with the surface 1 of the housing 1, and the connection between cavities 20 and 19 ceases. Upon further movement of the follow-up piston 8 25, the edge 13 moves away from the inner surface 12 of the elastic element 9, and the control cavity 19 is again in communication with the atmosphere. The discharge piston is in the initial position by the spring action, t, e, the seal 7 comes in contact with the housing 1, thus separating the input cavity 3 and the cavity 22. Compressed air begins to flow into the system, the filling mode begins. When the pressure of the compressed air reaches the upper limit of the controller, the cycle repeats, I

The invention allows to increase

reliability and resource of the pressure regulator,

thirty

35

40

Claims (1)

Invention Formula A pressure regulator comprising a housing with inlet and outlet cavities between which a check valve is installed, a sensitive element located in the outlet cavity, made in the form of a spring-loaded piston connected with a stem bypass valve, the outlet of which is connected to the control chamber of the reset valve installed in the inlet cavity, characterized in that, in order to increase the reliability of the regulator, the shut-off element of the relief valve is designed as a cup-shaped elastic element, the rod is provided with a groove, axially and radial channels connecting to the groove, in which a chaple-shaped elastic element is installed, the inner side of which It is made with the possibility of contact with the lower edge of the groove of the rod and with the housing, while the axial channel is connected through the over-piston cavity to the atmosphere. 2 FIG. 3