JPS6344617Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a high-pressure regulator used for piping connection to a high-pressure fluid supply path.
This invention relates to a high-pressure regulator that has a pressure adjustment function that closes the valve based on the difference between the upward axial pressure of the plunger valve pressed against the valve seat and the spring pressure of the plunger head.

[Conventional technology]

Conventional high pressure regulators of this type use coil springs as springs for the plunger head, but there are various disadvantages when used for high pressure.

In other words, the contact of the end of the coil spring with the plunger head is uneven, and since the plunger valve is a coil, the movement of the plunger valve is not smooth and accurate operation cannot be expected, and the length of the coil spring to obtain a predetermined deflection is insufficient. Since it is long and requires a large volume to accommodate the coil spring, the external dimensions of this regulator must be increased, which is uneconomical in terms of material costs, processing, assembly, etc.

Therefore, it has been proposed to solve the above problem by using a disc spring instead of the coil spring. Such a proposal has been made, for example, in Japanese Patent Laid-Open No. 52-64021.

This allows this type of high-pressure regulator to be constructed compactly and compactly, but by using the disc spring, the air in the disc spring housing space is compressed and depressurized in response to the vertical movement of the plunger valve. Due to the pressure change, the plunger valve no longer operated with the original set spring force of the disc spring, and the intended purpose could not be achieved.

To solve this problem, a ventilation hole is provided so that the air in the disc spring housing space can pass in and out to the outside, thereby preventing changes in air pressure.

[Problem that the invention attempts to solve]

However, since a large number of disc springs are stacked to form a disc spring assembly, assembly is more complicated than that of a coil spring, and a special member must be provided to position the center of the upper and lower disc springs. It is no longer sufficient to have a simple structure in which a protrusion is simply protruded from the upper part of the plunger body and a coil spring is fitted into the protrusion as in the case of the coil spring shown in Fig. 1. It is now necessary to provide the plunger body with upper and lower support portions for supporting the disc spring. At the same time, it is necessary to carry out the troublesome process of forming a stepped portion for receiving pressure on the plunger valve, and there is a problem in that this process and the upper and lower support portions for supporting the disc spring must be performed. There is also a requirement that the sealing effect between the plunger valve and the sliding guide cylinder of the valve body not be reduced.

In view of the conventional problems, the present invention provides a small and inexpensive high-pressure regulator that can operate accurately, allows easy repair and replacement of plunger valves, springs, etc., and has excellent manufacturability and ease of assembly. The purpose is to

[Means for solving problems]

In order to solve the above problems, the present invention provides an inlet 2 on the side of the valve box 1 and an outlet 3 on the lower side,
A valve seat 5 is provided at the discharge port 3, and a plunger body is provided so as to be movable up and down by a sliding guide tube 9 of the valve box 1 so that the plunger body can be seated on the valve seat 5. On the opposite side, a valve box opening 7 is provided in the vertical movement direction of the plunger body, and a lid 16 is provided with a spring housing chamber 17 and fixed to the valve box opening 7.
A ventilation hole 18 leading to the outside is provided in the lid 16, and a disc spring assembly 12 is installed in the spring housing chamber 17, with its lower end supported by the plunger body and its upper end penetrating through the top of the lid 16. Adjustment screw 19
In the high pressure regulator housed so as to be pressed and supported by the valve seat 5, the plunger body is
the plunger valve 6 seated on the plate spring assembly 12;
The plunger head 8 is supported by a plunger head 8,
The portion of the plunger valve 6 that is attached to the plunger head 8 is configured with a stepped portion so as to have a smaller diameter than the portion located in the flow path from the inlet port 2 to the outlet port 3.
A recess into which the small diameter portion is fitted is provided, and a sleeve-shaped packing 11 is interposed between the lower end surface of the plunger head 8 and the stepped portion of the plunger valve 6 with the small diameter portion fitted into the recess. The plunger valve 6 is configured such that the gasket 11 is in sliding contact with the inner surface of the sliding guide tube 9.
was fixed by tightening the stud bolt 10 from the upper end surface of the plunger head 8.

[Effect]

Therefore, the plunger body is connected to the plunger valve 6.
By configuring the plunger head 8 and the plunger head 8 separately, it is possible to replace only the plunger valve 6, and the stepped portion of the plunger valve 6 to receive the originally necessary pressure can be formed by replacing only the plunger valve 6. can be obtained by simple processing to make the diameter smaller than the plunger head 8, and the plunger valve 6 is tightened and fixed to the plunger head 8 by pulling the stud bolt 10, and this pulling and tightening is Take advantage of
By deforming and holding the gasket 11 interposed between the lower end surface of the plunger head 8 and the stepped portion of the plunger valve 6 not only in the direction along the axis of the plunger valve 6 but also in the orthogonal direction, At the same time, a sealing effect between the plunger head 8 and the inner surface of the sliding guide cylinder 9 is achieved.

〔Example〕

In the figure, reference numeral 1 indicates an angle-shaped valve box, which has an inlet 2 on the side and an outlet 3 below. A plunger head 8 is exposed at a valve box opening 7 that opens above the same axis as the valve case 3, and is slidably held in a sliding guide tube 9 that is inserted and supported from the valve box opening 7.

The plunger valve 6 has a diameter slightly smaller than the outer diameter of the plunger head 8 and is connected and fixed with a bolt 10.
A gasket 11 that closely contacts the inner surface of the sliding guide cylinder 9 is interposed at the connection boundary position.

Reference numeral 12 denotes a disc spring assembly in which a large number of single disc springs are stacked on the same axis, one end of which is supported by the plunger head 8 via a lower support ring 13.
The other end is provided with an upper support ring 15 having a thrust bearing 14 on its upper surface.

Reference numeral 16 denotes a lid, which is provided with a spring storage chamber 17 having an inner diameter larger than the outer diameter of the disc spring as an opening at the lower end, and has a ventilation hole 18 in the side wall and an adjustment screw 19 penetrated through the top wall. Disc spring assembly 12 at the tip of
The lid 1 is configured to push the thrust bearing 14 of the upper support ring 15 provided at the upper end.
6 is screwed and fixed to the valve box opening 7.

The sliding guide cylinder 9 has a flange 20 at the end of the cylinder supported by a step 21 provided in the valve box opening 7, and is pressed and fixed by the lower end surface of the lid 16, and there is a , a gasket 10' is interposed.

As described above, the plunger main body is composed of the plunger valve 6 seated on the valve seat 5 and the plunger head 8 supported by the disc spring assembly 12, and the portion of the plunger valve 6 that is attached to the plunger head 8. , from the inlet 2 to the outlet 3
The stepped portion is configured to have a smaller diameter than the portion located in the flow path leading to the plunger head 8.
A recess into which the small diameter portion is fitted is provided, and a sleeve-shaped packing 11 can be interposed between the lower end surface of the plunger head 8 and the stepped portion of the plunger valve 6 with the small diameter portion fitted into the recess. The packing 11 is configured to be connected to the sliding guide tube 9.
The plunger valve 6 is fixed by tightening a stud bolt 10 from the upper end surface of the plunger head 8 so as to be in sliding contact with the inner surface of the plunger head 8. Therefore, the high pressure regulator configured as described above includes the plunger head 8 and the plunger valve 6.
Pressure is applied to the circumferential stepped portion of the plunger valve 6 formed by the dimensional difference between the two, and the plunger valve rises against the elastic force of the disc spring assembly 12, causing the high pressure fluid to flow through the discharge port. This will allow you to move on to 3.

[Effect of idea]

According to the present invention, by separating the plunger body into the plunger valve 6 and the plunger head 8 while using a disc spring, it is possible to replace only the plunger valve 6, and the plunger valve 6 can be replaced.
The plunger head 8 and the plunger head 8 can be manufactured by simple machining, and the lower end surface of the plunger head 8 and the step of the plunger valve 6 can be made by using the tightening force when fixing the plunger valve 6 to the plunger head 8. Packet 1 interposed between the
1, simultaneously increasing the sealing effect between the plunger head 8 and the inner surface of the sliding guide tube 9;
As a result, it is possible to easily manufacture a high-pressure regulator that can provide a more accurate pressure response than a conventional coil spring, and to provide a high-pressure regulator that has an excellent sealing effect while being easy to assemble.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of a high pressure regulator according to the present invention. Valve box...1, Inlet port...2, Outlet port...3, Valve seat...5, Plunger valve...6, Valve box opening...
7. Plunger head... 8. Sliding guide tube...
9. Studded bolt...10.Putkin...1
1. Disc spring assembly...12, Lid...16, Spring storage chamber...17, Ventilation hole...18, Adjustment screw...1
9.

Claims (1)

[Scope of utility model registration request] An inlet 2 is provided on the side of the valve box 1, an outlet 3 is provided below, a valve seat 5 is provided on the outlet 3, and the plunger body is slid on the valve box 1 so that it can be seated on the valve seat 5. A valve box opening 7 is provided on the opposite side of the valve box 1 from the discharge port 3 in the vertical movement direction of the plunger body, and the valve box opening 7 is provided so as to be movable up and down with a guide cylinder 9.
A lid 16 is provided with a spring housing chamber 17 fixedly fixed to the spring housing, a vent hole 18 communicating with the outside is provided in the lid 16, and a disc spring assembly 1 is provided in the spring housing chamber 17.
2 is accommodated in such a manner that its lower end is supported by the plunger body and its upper end is pressed and supported by an adjustment screw 19 that is installed through the top of the lid 16. It is composed of a plunger valve 6 seated on a seat 5 and a plunger head 8 supported by the disc spring assembly 12, and a portion of the plunger valve 6 attached to the plunger head 8 is connected from the inlet port 2 to the outlet port. The stepped portion is configured to have a smaller diameter than the portion located in the flow path leading to the plunger head 8, and the plunger head 8 is provided with a recess into which the small diameter portion is fitted, and the small diameter portion is fitted into the recess. A sleeve-shaped packing 11 is interposed between the lower end surface of the plunger head 8 and the stepped portion of the plunger valve 6, and the packing 11 is configured to come into sliding contact with the inner surface of the sliding guide tube 9. A high-pressure regulator characterized in that the plunger valve 6 is fixed by tightening a stud bolt 10 from the upper end surface of the plunger head 8.