SU1309109A1 - Time relay - Google Patents

Abstract

The invention relates to pneumatic automation devices, namely to a time relay intended to delay a discrete pneumatic signal for a predetermined period of time. The purpose of the invention is to simplify the design of the time relay. The time relay contains input channel 7, it is possible. gate spring 21, hydraulic chamber 8 filled with liquid and located between the first 4 and second 5 separation elements, partition wall 9 in the hydraulic chamber, in which the adjustable throttle 10 and check valve 11 are installed, first air chamber 6 located between the first separation element 4 and the housing, and the second air chamber 23, in which the actuating element 22 is located, which is associated with the second separating element m and interacting with the output forming unit signal. The first and second separating elements are made in the form of membranes, and the actuating element is made in the form of a loose disk connected to a return spring 21, the input channel communicating with the first pneumatic cage 6, and the second pneumatic chamber 23 is connected to the atmosphere through an aperture Glutchiteli 24 in the wall of the housing. The output signal generating unit, which interacts with the disk 22, is made in the form of a mechanopneumatic discrete converter. 1 il. with S (L 18 with O CO CO

Description

And the imprint relates to devices 11eia .. automatics n intended for i: i. for a specified period of time iiiii r, v ;; ii of the central discrete signal.

lU; i acquisitions - simplified design. And j UMO iipC.MOHH.

The drawing shows a diagram of the relay and time.

The case of the time relay consists of three parts 1-3, installed with screws (not shown). The first 4 and second 5 membranes are installed between the body parts. The first pneumatic chamber 6 is connected to the inlet channel 7. Between the membranes 4 and 5 there is a hydraulic chamber 8 filled with liquid. In the chamber 8 there is a partition wall of the housing 9, in which an adjustable choke 10 and a check valve 1 1 are installed. The diaphragms 4 and 5 are separating elements between the pneumatic and hydraulic chambers.

In part 3 of the housing, a mechano-pneumatic converter is installed, which is a unit for generating a pneumatic output signal. The mechanopneumatic transducer consists of a stem 12, a spring 13, a valve with a seat 14, a spool 15 and a spring 16, a lid 17, a feed channel 18, an output channel 19, and a through hole 20 is made in the stem 12, which is the reset channel of the mechanopneumatic transducer.

To the membrane 5 by means of return springs 21 is pressed the disk 22, which serves as an actuating element. A second pneumatic chamber 23 is connected to the discharge port 20 and the atmosphere through the openings — mufflers 24 in the wall of the body part 3.

The time relay works as follows.

In the initial position of the diaphragm 4 and 5 are in the lowest position under the influence of the return spring 21. The check valve 11 serves for the rapid passage of fluid into the lower part of the chamber 8. The stem 12 with the spring 13 is depressed to the lower position, the converter valve is closed, the output channel 19 is connected through the channel 20 and the holes 24 with the atmosphere, the output signal is zero.

When the output discrete pneumatic signal is fed through channel 7 to the chamber

6, the membrane 4 displaces the liquid through the adjustable choke 10 from the lower part of the chamber 8 to its upper part. The check valve 11 is closed.

The diaphragm 5 with the disk 22 rises and at the end of its working stroke it acts on the pins 12. The latter rises and pushes the spool 15 from the seat 14, connecting the feed channel 18 to the output channel 19. The air discharge is closed due to the contact of the end of the pin 12 with the spool 15.

The output signal of the relay becomes equal to one.

When the input signal is removed in channel 7, the relay returns to its original position.

The delay time of the signal is adjusted by the choke 10.

Claims (1)

Invention Formula A time relay containing an inlet channel, a return spring, a hydraulic chamber filled with liquid and located between the first and second separating elements, a body partition wall placed in the hydraulic chamber, in which an adjustable throttle valve is installed, and a check valve, the first pneumatic chamber located between the first separating element and the housing, and the second pneumatic chamber located between the second separating element and the housing, in which the actuating element is located, is connected with the second separating element and interacting with the output signal generating unit, characterized in that, in order to simplify the design, the first and second separating elements are made in the form of membranes, the actuating element is in the form of a disk connected to a return spring, and the input channel is connected, It is connected to the first pneumatic chamber, and the second pneumatic chamber is connected to the reset channel of the output signal generating unit, made in the form of a discrete mechanopneumatic converter, and to the atmosphere The relative through Verstov -gluschiteli, vypo.tnennye in the cabinet.