JPS58113672A - Valve - Google Patents

Abstract

PURPOSE:To provide a positive operation in large differential pressure in a check valve having a conical valve seat by providing a guide mechanism for the valve. CONSTITUTION:A vlave 3 contacts closely a conical valve seat 1 of a valve holder 2 to shut off fluid. A guide 5 of the valve 3 and a guide 4 of the valve holder 2 contact smoothly each other at the low pressure side so that the valve holder is not deformed by the high pressure side pressure to operate normally the valve 3. Fluid from paths 12, 13 opened the vlave 3 and flows into a path 14. But when the fluid does not flow into the path 14, the valve 3 is pressed against the valve seat 1 by a spring 6 which is held by a cylinder 7 of the valve and a spring guide 11. When a cylinder 11 of the valve 3 is held by a guide tube 10 of a guide 9 fixed to the outer tube of the valve at the high pressure side of the valve 3, the guide 9 is not deformed by pressure since it is independent of the valve holder 2 so that the valve is normally operated and fluid opens the valve 3 to flow from the path 12 to a path 15.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is intended to operate a check valve with a very large difference between high pressure and low pressure without any accidents. Sometimes it happens that water does not come in through the check valve. It is a check in case of high pressure. To explain this with reference to Figure 1, in Figure 1, the valve 3 is a circular surface of the valve IM1 of the valve holder 2, which forms a rectangle that closes off the fluid by admiring each other. Since it is in sliding contact with the guide 4 on the low pressure side, high pressure (1
Since the valve holder is not deformed by the pressure of 11j, normal relative movement is always possible. When fluid flows in, it pushes the valve upward through passage 1213 and flows from valve seat 1 to im passage 14, but if the pressure increases to the high pressure side or fluid 12 becomes full. When the inflow stops, spring 6
The valve 3 is pressed against the valve seat and the spring 6, which is bonded by the guide pedestal of 4.5, is pressed against the valve cylinder 7 and the spring is F.
It is held from 8t. In addition, Fig. 2 shows a guide cylinder 10 on the high pressure side.
．． The guide cylinder 11 of the valve slides, but since the guide 9 is independent of the valve holder, there is no JQgc type for pressure, so the valve operation 1
is carried out right and left, and the fluid is guided from passage 12 through valve 1 to passage 15.

[Brief explanation of the drawing]

Figure #11 is a front view of an example of this invention. Figure 2 is a front view of an example of this invention.

Claims (1)

[Scope of Claims] 1) It has a circular valve holder which is displaced in the axial direction of the 8 pipes, which partitions the fluid into a high pressure side and a low pressure side, and which slides in contact with the inner surface of the valve holder on the low pressure side. A check valve that has a valve guide that closes off fluid by installing a spring on the high pressure side. 2) In a valve that has a valve seat in the same company's planar shape and is displaced in the axial direction in eight directions, the valve slides on the guide cylinder of the guide 9, which is fixed to the outer cylinder of the valve and equipped with the guide cylinder 10 on the high pressure side of the valve. It has a valve 3 that holds a cylinder 11 that rotates, and a spring 6 is connected between the guide 9 and the valve 3.
A check valve characterized by being pressurized with