The valve-control the speed of pressure rise

 

(57) Abstract:

Usage: in industry, in particular, in the power hydraulic systems. The inventive valve-speed control pressure is made on the basis of the valve indirect actions integrated in a special case with screwed-in pressure regulator, which consists of a cylinder located inside spring piston, the stop and the sealing rings, and hydroline connecting the regulator with valve, takes place after the main valve valve indirect action. The diameter of the piston and spring selected so that at a given rate of rise of pressure to provide the opening of the main valve. 2 Il.

The invention relates to hydraulic engineering and can be used to power hydraulic systems.

Known locking damping valve Denison, automatically providing a specified acceleration of the working fluid in all modes. It is a flow-through valve with valve, normally closed by means of a spring to prevent the flow of fluid from the inlet to the outlet cavity, the moving speed of the spool is controlled by assisting the remainder of this device is the design complexity and loss of pressure due to the hydraulic resistance of the valve.

The closest to the proposed solution to the technical essence is the valve-regulator to limit the pressure and rate of pressure rise exceeding specified in volumetric hydraulic actuators. It is a safety device on the basis of the valve indirect action representing a control valve, a preloaded spring to the hole in the housing, the spring is regulated by the screw inside the housing, the main valve is set to the CEO and is preloaded against the sleeve connected to the housing by a spring, main valve made the throttle, the valve is built in a special case with the combined discharge from the main and auxiliary valves with screwed-in pressure regulator, which consists of a Poppet valve with two-way control with choke on each line of control and the capacity of the control line to the rear of the valve [2]

The disadvantage of this device is the design complexity and the large range of rate of pressure rise in the absence of the adjustment.

The objective of the invention is to simplify the design and improve reliability by changing the design of the speed regulator of pressure rise.

The essential difference between the proposed controller is that there are no chokes and capacity in hose management, and that the speed limit pressure is fixed and depends on the stiffness of the spring.

These differences valve speed controller mounting pressure to provide a simplification of the structure and increase its reliability.

In Fig. 1 presents the proposed valve; Fig.2 hydraulic diagram of the proposed valve.

The valve is a safety device on the basis of valve 1 indirect actions integrated in a special case with 2 screw-in pressure controller 3, which consists of a casing 4, a piston 5, the spring 6, the stop 7, screw 8 and the sealing rings, and hydroline connecting the controller 3 valve 1, takes place after the main valve 9, the casing 4 is connected to the outer side with the atmosphere.

The valve control rate of pressure rise is as follows.

Thus, the application of the described device in comparison with the prototype will simplify the design and increase the reliability of the hydraulic system.

The valve-regulator of the rate of increase of pressure at the base of the valve indirect action representing a control valve, a preloaded spring to the hole in the valve body, the spring is regulated by the screw inside the housing, the main valve is set to the CEO and is preloaded against the sleeve connected to the housing by a spring, main valve made the throttle, the valve is built in a special housing, which is screwed into the pressure regulator, wherein the regulator is made in the form of a cylinder located inside the spring-loaded piston that connects the pressure from the cavity after the main valve valve indirect action, on the other side of the piston of the control cylinder is connected with the atmosphere or with the sink, the diameter of the piston and spring selected so that when set

 

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FIELD: production of hydraulic distributor for electro-hydraulic amplifiers.

SUBSTANCE: the hydraulic distributor is intended for use in electro-hydraulic amplifiers and is supplied with the drive of a sliding valve made in the form of a turning electrical motor, on the shaft of which there is a cantilever eccentric with a ball bearing. On the sliding valve there is a groove for interaction with the bearing and the shaft sealed with a reinforced sealing ring.

EFFECT: the invention ensures increased efficiency of the hydraulic distributor operation.

2 cl, 4 dwg

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