SU1024634A1 - Locking regulating device - Google Patents

Abstract

ZAPOT.A. REGULATORY DEVICE, comprising a housing with a saddle, inlet and outlet nozzles, a drive, installed inside the housing and connected by means of a rod to a shut-off organ, in which the channels connecting its outer rear surface and the control valve, characterized the fact that, in order to increase reliability and durability by eliminating cavitation and reducing the loads on the locking organ, the latter is made of a central element rigidly connected to the rod, and a locking ring spring loaded from the carrier but the central element and the wagon can be moved relative to it and interact with the body seat, while the channels are made in the central element and snap ring at an angle to the axis of the rod coaxially with each other and communicated with an additional axial channel made in the central element, and locking the ring is equipped with a thrust collar and a small erector, capable of interacting with the central element.

Description

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05 GO 4 The invention relates to the field of fittings and can be used in various sectors of the national economy, including water supply systems. A locking device is known, which has a housing, a cylinder, a piston, at the end of the rod of which is attached to the porous body, controls the valve on the line 1 connection.} The disadvantage of this locking device is the presence of unloaded forces, which are explained by the difference in pressure values inside and outside the bell-shaped closure organ. This leads not only to an increase in the drive power of the moving organ, but also to vibrations, noise, and considerable loads on it, which reduces the reliability of the entire locking device. The closest in technical terms to the present invention is a locking device comprising a housing with a saddle inlet and outlet nozzles, an actuator placed inside the housing and connected by means of a brush to the locking member in which channels are made connecting its outer and rear surfaces and controlling valve | 2}. . Making the channels parallel to the axis of the plate prevents the working medium from being fed from the outer plate to the reduced pressure zone at the edge of the plate on its inner side. This does not allow to eliminate the source of cavitation. A disadvantage of the known device is the impossibility of its use as a gate valve, which tightly blocks the flow of the working medium due to the presence of channels. This reduces its technological capabilities. This goal is achieved by the fact that in the locking regulating device that holds the body with the seat, inlet and outlet nozzles, the actuator is located inside the body and is connected by means of a rod to the locking body in which the channels connecting its outer and back surfaces are made, and a control valve, a locking member is inserted from a central element rigidly connected to the rod, and a locking ring springed relative to the central element AND equipped with a possibility of movement relative to it and interlocking odeystvi with a seat body, the channels formed in the central body and locking ring at an angle to the axis of the rod coaxially to each other and further communicated with an axial passage formed in the central member and the locking ring is provided with a thrust collar and stop, you are a. complete with the possibility of interaction-. with central element. FIG. 1 shows the proposed f device, longitudinal section; Fig 2 - shut-off in the open position; in fig. 3 - valve in the closed position. The locking device consists of a housing 1 with a built-in hydraulic hygro-hydraulic membrane, including a membrane 2, a stem 3.-W. At the end of the rod is placed a locking member consisting of a central element 4 on which the locking ring 5 is movably mounted. It is provided with a collar 6 and a stopper 7 and is spring-loaded with respect to the central element 8. The locking ring 5 has the ability to interact in the closed position of the locking member with a saddle 9 enclosures. In the central element 4 there is an axial channel Yu and communicating with it inclined channels 11, which are coaxial with the inclined channels 12 made in the locking ring 5. The device is equipped with a control valve 13 connected by tubes 14,15,16 of the housing 1 with the working cavity A of the hydraulic drive and the outlet pipe 17 of the housing 1. The locking device operates as follows. When communicating by means of a control valve 13 of working cavity A through pipes 15 and 16 with outlet pipes 17 of housing 1, the working medium under pressure fills the working cavity A and py-. moves membrane 2, and through it and. the valve 3 with the locking member to the left, facing the flow of the working medium. Then the control valve 13 returns to its original position, isolating the working cavity A. The locking member remains in an intermediate position at which the necessary flow of the medium through the locking device takes place. In this case, the shut-off valve assembly, about 5, under the action of the spring 8, is in the left position, bounded by the stop shoulder 6, in which the bowed channels 12 communicate with the inclined channels 11 and

working medium with high velocity head comes from inlet 18

 through channel 10, channels 11 and 12 into the zone behind the locking ring 5 - the pressure zone, thus increasing the latter and thus reducing the danger of cavitation.

When using a sealed device for airtight and nonHtff-o re: potsa covers, the operating station A is filled with medium by means of a message through the upper valve 13c with the outlet tag 17 and moving the stop valve to the extreme left position. In this case, the locking ring 5 rests on the saddle 9 and stops, and the price element 4 continues to move to the left, compressing the spring 8. Its movement is determined by the limiter 7. The channels 11 in the price element 4 and the channels 12 in the lock ring 5 are displaced relative to each other. / fugue and isolate blocked inlet

FROM the output, ensuring tightness overlap.,

To open the locking device, its working cavity A is reported to the middle. the control valve 13 with a drain, under the action of the working medium under pressure, the locking member moves to the right, displacing the medium from the working position A. The locking ring 5 under the pressure of the spring 8 returns to the initial position

0 position.

The implementation of the locking member from the central element and the movable locking bar with inclined channels allows the use of a locking device

5 not only as adjusting, but also as shut-off, while increasing its durability due to supplying the most cavitational zone with reduced pressure at the trailing edge of the BfeicoKOCKOpocTHoro shut-off valve of the working medium from the energy-saturated central part of the inlet nozzle.

FIG. 2

Claims (1)

LOCKING AND CONTROLLING DEVICE, comprising a housing with a seat, inlet and outlet nozzles, an actuator located inside the housing and connected by a rod to a locking body, in which channels are made connecting its outer and rear surfaces, and a control valve, characterized in that , in order to increase reliability and durability by eliminating cavitation and reducing loads on the locking element, the latter is made of a central element rigidly connected to the rod and a locking ring spring-loaded with respect to prices the swivel element and recessed with the possibility of moving relative to it and interacting with the saddle of the housing, while the channels are made in the central element and the locking ring at an angle to the axis of the rod coaxially to each other and are in communication with an additional axial channel made in q central element, and the locking ring is provided persistent shoulder And limiter, made with the possibility of interaction with the Central element.