Three-way control valve

 

(57) Abstract:

Use: for automatic control. The inventive housing with a guide in the form of glass between limiting stops placed hollow lock body with the rod and return spring. Locking the body in the form of two cylinders and the elastic ring located between them. Cylinders mounted on the rod with the possibility of their moving. 1 Il.

The invention relates to automatic control, and more particularly to regulators, and can be used in liquid cooling systems of internal combustion engines, heating systems and other objects, where the temperature is controlled by redistributing its threads.

Known three-way valve, a stop valve which is made in the form of two cylinders mounted on the rod with the possibility of their moving.

The disadvantage of this valve is that the locking body is not unloaded.

Also known three-way control valve, comprising a housing with a guide in the form of a glass which contains a stop valve in the form of a hollow cylinder with four sealing Kranju to ensure dynamic stability and to eliminate self-oscillations.

The aim of the invention is to eliminate self-oscillations by compensating forces arising in the upper part of the locking surfaces of the cylinder. The proposed construction of the gaps appear simultaneously on both sides of the moving cylinder, which ensures the washing of the locking body from all sides and, as a consequence, the elimination of flutter.

This objective is achieved in that the locking body in the form of two cylinders and the elastic ring located between them, with the cylinders mounted on the rod with the possibility of their moving.

The drawing shows the proposed valve.

The valve consists of upper and lower hollow cylinders 1 and 2, between which is placed an elastic ring 3, for example, V-shaped section. Cylinders mounted on the vertical rod 4 between the end of the upper collar on the rod and the washer 5 is pressed against the lower flange of the stock return spring 6. To limit the movement of the cylinder is made the stop 7. The cylinders are placed into the guide in the form of a Cup 8 having Windows that communicate with the nozzle body 9 of the valve.

Three-way control valve operates as follows.

In the absence of impacts from upravlja 1 and 2 and the elastic ring 3 in the upper extreme position to another 7. The lower cylinder 2 compresses the elastic ring 3, as a result increasing its diameter. The elastic ring 3 is pressed against the inner surface of the Cup 8 and is sealed overlap the top of the window.

In the presence of impact from the control unit begins to move lower cylinder 2, thereby freeing the elastic ring 3. The latter reduces its diameter and a gap between the bottom of cylinder 1 and the glass 8, through which begins to leak fluid. Upon further movement of the piston rod 4 moves the cylinder 1 forming the gap in the upper side of the stop 7, through which begins to leak fluid. Thus, the cylinder 1 is washed by the liquid on all sides, which helps to eliminate self-oscillations.

In the lower position of the valve body there are phenomena that are similar to those described.

Describes the design features of the proposed valve not only allow you to eliminate self-oscillations, but also provide a smooth (free) movement of the locking member, which significantly reduces the wear of its parts.

Serial production of the proposed design of the valve planned on Safonovo plant "heat control" (Smolensk obl">

THREE-way control VALVE, comprising a housing with a guide in the form of glass, which between limiting stops placed hollow lock body with the rod and return spring, wherein the locking body in the form of two cylinders and the elastic ring located between them, with the cylinders mounted on the rod with the possibility of their moving.

 

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