SU1373364A2 - Pressure regulator for closed irrigation system - Google Patents

Abstract

The invention relates to irrigation of agricultural crops and can be used for irrigation with closed self-pressure irrigation systems with hydraulic automatic machines. The purpose of the invention is to expand the range of operating pressures and improve the accuracy of the controller. The pressure regulator for closed irrigation systems consists of a body 1 with a feed 2 and a DRAIN. 3 branch pipes. The casing 1 is fitted with a locking member 4 with a spring-loaded diaphragm 5. The locking member 4 is equipped with a control 9 and a drain valve 11 that have a common rod 13. The stem 13 is equipped with a clamp 23 of a hydraulically actuated position, the working cavity of which is communicated with the cavity 8 The presence of the latch 23 makes it possible to fix the position of the control 9 and drain I 1 valves, extends the range of operating pressures and improves the accuracy of the regulator. 2 Il. (L

Description

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The invention relates to a crop crop of agricultural crops, can be used for irrigation with closed self-priming irrigation systems with hydraulic automatic machines, and is an improvement of the known device according to the basic author. St. .Cho 1005729.

The purpose of the invention is to expand the range of operating pressures and improve the accuracy of the regulator.

FIG. Figure 1 shows a pressure regulator for closed irrigation systems; in fig. 2 - control valve in fixed position.

The pressure regulator contains a housing

At the initial moment, the filter is disconnected by the membrane 10 of the control valve 9 with the outlet pipe 3, then the locking member 4 is closed. Before the shut-off valve, the pressure rises 5, which is transmitted through the throttle 6, the sensor 8 and the tube 20 to the membrane 10. At a given spring 14 pressure, usually less than the lower limit of the control operating pressure, the rod 13 with the membranes 10 and 12 moves to the right position, In this case, the water pressure acts on the membrane 25, overcoming the force of the spring 24, the latch 23 interacts with the notch 28, thereby fixing the rod 13. The membrane 12 separates the outgoing

ten

with inlet 2 and outlet 3 inlet-outlet with atmosphere, and between the rings, the locking member 4 with the spring-loaded lug 17 and the membrane 10 is formed by the in-membrane 5, the throttle 6, the filter 7, the sensor 8, the bore through which the sensor 8 connects to

a control valve 9 with a membrane 10 and a discharge pipe 3.

drain valve 11 with diaphragm 12. Diaphragm-Pressure in the supramembrane control cavity

10 and 12 are connected by a common rod 13, the torus falls due to the outflow of water into the outlet

spring-loaded spring 14, with the meme-20 th branch pipe, the locking body 4 of the opening of the brane is made differential. Reets and passes water to the drain of the thick patr,

spring spacing is carried out by nut nut 3, thus the device is transferred

15. The body 16 of the valves 9 and 11 from the side the mode of operation of the regulator,

The submembrane cavity of the control valve — When the pressure is lowered before the adjustment, 9 is made with an internal annular torus, the spring 24 removes the latch 23 and.

stupa 17. forming with it two cavities

18 and 19.

The cavity 18 is hydraulically connected by the tube 20 with the sensor 8, and the cavity 19 through the tube 21 - with the outlet pipe 3,

connected through the tube 22 and the supramembrane - JQ valve 4 is closed, and the open drain cavity of the drain valve 11 with the atmosphere valve 11 ensures the pressure drop. behind the regulator to zero.

The rod l3 is kinematically connected with the fix-Next, before the inlet pipe of the booster 23, which is equipped with hydraulic pressure, and the process of regulating a one-way action, including the pressure transmitter through passage and the shaping plate 24, the membrane 25 and the working cavity of the control command 5 . 26, which is connected by tube 27 through

recesses 28 and spring 14 converts rod 13 with membranes 10 and 12 to their original position, membrane 10 disconnecting tubes 20 and 21, the outflow of water from the over-membrane cavity of the regulator stops and the port 20 with sensor 8. Retainer 23 interacts with recess 28 on the rod 13 drain and unrav; 1 th valves. The spring 24 may be made with an adjustment element (not shown).

The pressure regulator operates as follows.

Water from the self-priming irrigation network enters the inlet 2 of the pressure regulator housing. Since the cavity is dat40

Claims (1)

Invention Formula Pressure regulator for closed irrigation systems according to author. St. XQ 1005729 characterized in that, in order to expand the range of operating pressures and to increase the control accuracy, the regulator is provided with a clamp for the position of the common hydraulic actuator, the working cavity of which is in communication with the sensor cavity. At the initial moment, the filter is disconnected by the membrane 10 of the control valve 9 with the outlet pipe 3, then the locking member 4 is closed. Before the shut-off element, the pressure rises, which is transmitted through the throttle 6, the sensor 8 and the tube 20 to the membrane 10. At a given spring 14 pressure, usually less than the lower limit of the control operating pressure, the rod 13 with the membranes 10 and 12 moves to the right position, water pressure acts on the membrane 25, overcoming the force of the spring 24, the latch 23 interacts with the notch 28, thereby fixing the rod 13. The membrane 12 separates the outgoing the pipe with the atmosphere, and between the annular protrusion 17 and the membrane 10 is formed by the closure of the spring 24 removes the latch 23 and. The valve 4 is closed, and the open drain valve 11 ensures that the pressure downstream of the regulator drops to zero. recesses 28 and spring 14 transfers rod 13 with membranes 10 and 12 to their initial position, with membrane 10 disconnecting tubes 20 and 21, the outflow of water from the over-membrane regulator cavity stops and locking Invention Formula Pressure regulator for closed irrigation systems according to author. St. XQ 1005729 characterized in that, in order to expand the range of operating pressures and to increase the control accuracy, the regulator is provided with a clamp for the position of the common hydraulic actuator, the working cavity of which is in communication with the sensor cavity.