JPS6332616A - Reducing valve device - Google Patents

Abstract

PURPOSE:To facilitate the easy maintenance of a reducing valve device by setting a cover to the opening of a secondary room of a partitioned barrel and providing a through hole in the axial direction to fit the rear end of a pressure receiving member movably into the through hole so that a return spring does not come out when the cover is removed. CONSTITUTION:A cover 19 is fitted into an opening 16 of a secondary room 15 and fixed by a cap screw 21. The cover 19 contains a support hole 23 linking a secondary gas discharging port and a piston member 25 is fitted movably into the hole 23. A fine hole 33 is drilled through a partition wall 13 to secure linkage between a primary room and the room 15. A spring rest is fitted removably and externally to a slide lever 29 and contains a return spring 39. A nut member 41 is fixed at the outer circumference of the rest 37 and operation pins 43 and 43 are unified with the member 41. These pins 43 are protruded over the barrel windows 45 and 45 and the tips of these pins are pressed to the right edges of both windows 45 by the force of the spring 39. Therefore, the cover 19 does not support the spring 39. As a result, the spring 39 never comes out even though the cover 19 is removed in a maintenance mode.

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a pressure reducing valve device.

[Prior art]

A conventional device of this type is shown in FIG.
When maintaining the cylinder member C, it is necessary to remove the outer cylinder 4 from the inner cylinder 5 by rotating the screw. In this case, the return spring 39 is hooked between the stepped portion 4a of the outer cylinder 4 and the piston member 25, so when the outer cylinder 4 is removed from the inner cylinder 5, the return spring 39 is Piston member 2 due to the elastic ↑Ω force
5. The return spring 39 etc. pops out, and is this gQ%? ,-, it had the disadvantage of being difficult to maintain.

(Means for solving the simple problem) This invention has been made to solve this problem, and its gist is to provide a cylindrical body having openings at both ends, and to provide a partition wall on this cylindrical body. A primary chamber and a secondary chamber are formed through the partition wall, and the primary chamber and the secondary chamber are communicated by making a hole in the partition wall, and a pressure receiving member is placed in the secondary chamber in the axial direction of the cylinder. a spring seat is provided in the cylindrical body on a side opposite to the secondary chamber of the pressure receiving member, and a compression spring is installed between the spring seat and the pressure receiving member, and the pressure receiving member is In the pressure reducing valve device that moves forward and backward according to the internal pressure of the secondary chamber and the operation of the compression spring, and opens and closes the pore according to the movement of the pressure receiving member, a lid body is installed at the opening on the side of the secondary chamber in the cylinder body. ,
In this pressure reducing valve device, a through hole is formed in the lid body along the axial direction of the cylindrical body, and a rear end portion of the pressure receiving member is fitted into the through hole so as to be movable back and forth.

[Action of the invention]

Since the pressure reducing valve device according to the present invention is configured as described above, maintenance is performed by removing the lid, but at this time, since the lid does not support the return spring, the elasticity of the return spring is The return spring etc. will not pop out due to force, and therefore maintenance can be done easily.

[Explanation of Examples]

Hereinafter, the present invention will be described in detail based on the drawings.

1 and 2, 11 is a cylindrical body of a pressure reducing valve device l, which connects a secondary chamber 15 and a primary chamber 1 via a partition wall 13.
It is divided into 7. 19 is a lid body, and the secondary chamber 15
It is fixed by a cap screw 21 while being fitted into the opening 16 of. This lid body 19 has a support hole 23 connected to the secondary gas exhaust port at its axis.

Next, 25 is a piston member corresponding to the pressure receiving member of the present invention, and is fitted into the secondary chamber 15 so as to be able to move forward and backward. This piston member 25 is pushed out to the right (in FIG. 1) by the increase in the internal pressure of the secondary chamber 15.

Reference numeral 29 denotes a reciprocating rod from which the piston member 25 is extended, and is integrally formed with the same axis as the piston member 25, and its tip is fitted into the support hole 23 of the lid 19 so as to be retractable. There is.

The advancing/retracting rod 29 has a shaft hole 31 that communicates the secondary chamber 15 with the support hole 23 and, in turn, with the outside of the pressure reducing valve device 1 . 33 is a pore, and the partition wall 13
The secondary chamber 15 and the primary chamber 17 are connected to each other. This pore 33 has a valve box part 33a in the middle,
This valve box part 33a has a needle valve 35 that opens and closes this small hole 33.
is installed so that it can move forward and backward. Note that this needle valve 35 is fixed to the piston member 25, and this piston member 25
It operates by advancing and retreating.

Reference numeral 37 denotes an annular spring seat, which is externally fitted onto the advancing/retracting rod 29 so as to be movable forward and backward. A return spring (compression spring) 39 is provided between the spring seat 37 and the piston member 25. A nut member 41 is screwed onto the outer periphery of the spring seat 37. Reference numerals 43 and 43 designate operation pins, which are integrally formed with the nut member 41 and protrude in the opposite radial direction from the outer circumferential wall surface thereof. The tip of the operating pin 43.43 is connected to the window 45 of the cylinder 15.
．． It protrudes outward from 45. At this time, operation pin 4
The tip of 3.43 closes the window 45 due to the elasticity of the return spring 39.
．． It is in contact with the right edge of 45. Reference numeral 47 denotes an adjustment nut member, which is screwed into a male threaded portion 49 formed on the outer periphery of the cylindrical body 11.

This nut member 47 moves forward and backward along the axial direction of the cylinder body 11 by screw rotation with respect to the male threaded portion 49 . 5
Reference numeral 1 denotes a housing groove, which is formed on the inner circumferential surface of the nut member 47. The tips of the operating pins 43, 43 are accommodated in this accommodation groove 51. Therefore, if the right groove end of the accommodation groove 51 is positioned to the left of the right edge of the window 45745, the operating pin 43; 43 will always be in contact with the right edge of the accommodation groove 51 of the adjusting NAND member 47. Therefore, by rotating the adjustment member 47, the operation pin 43.
43 can be moved back and forth in the axial direction of the cylindrical body 11, and as a result, the elastic force of the return spring 39 can be adjusted.

FIG. 3 is a diagram showing how this pressure reducing valve device 1 is used in a carbonated beverage dispenser.

In this case, the protrusion of the base 73 of the pouring device 71 is used as the lid 19 of the secondary chamber 15.

The gas reduced in pressure by the pressure reducing valve device 1 enters the container 75,
Press the liquid level W of the solution. At this time, if the operation lever 77 is rotated in the direction of the arrow and the on-off valve 79 is opened, the solution is poured out through the supply pipe 81.

FIG. 4 is a diagram showing the state of use at the site, in which an on-off valve 79 is installed in the middle of the supply pipe 81. In this embodiment, 83 is a safety valve that prevents the pressure inside the container 71 from exceeding a predetermined value.

In addition, in the above embodiment, a piston member is used as the pressure receiving member, but this does not preclude the use of a diaphragm.

〔Effect of the invention〕

Since the pressure reducing valve device according to the present invention is configured as described above, maintenance is performed by removing the lid, but at this time, since the lid does not support the return spring, the return spring's elasticity 18 The return spring etc. will not pop out due to force (therefore, maintenance can be done easily).

[Brief explanation of drawings]

1 to 4 show an embodiment of the pressure reducing valve device according to the present invention, FIG. 1 is a cross-sectional view, and FIG.
A cross-sectional view of the line portion, FIG. 3 is a diagram showing a usage state, and FIG. 4 is a diagram of another usage state. FIG. 5 is a sectional view of a conventional example. 11... Cylindrical body 13... Partition wall 15... Secondary chamber 16... Opening 17... Primary chamber 19... Lid body 23... Through hole (support hole) 25... Pressure receiving member (piston member) 29 ・
... Rear end of pressure receiving member (advancing/retracting rod) 33 ... Small hole 37 ... Upper seat 39 ... Compression spring (return spring) No. 1g Fig. 2 Fig. 51!1 φ

Claims (1)

[Claims] (1) A cylindrical body having openings at both ends is provided, and a primary chamber and a secondary chamber are formed in this cylindrical body through a partition wall, and by making a hole in the partition wall, the primary chamber and the secondary chamber are formed. A pressure-receiving member is fitted into the secondary chamber so that it can move forward and backward along the axial direction of the cylindrical body, and a spring seat is provided on the side of the cylindrical body opposite to the secondary chamber. A compression spring is installed between the spring seat and the pressure-receiving member, and the pressure-receiving member is moved back and forth by the internal pressure of the secondary chamber and the operation of the compression spring, and the pore is opened and closed according to the movement of the pressure-receiving member. In the valve device, a lid body is installed at the opening on the secondary chamber side of the cylindrical body,
A pressure reducing valve device in which a through hole is formed in the lid body along the axial direction of the cylindrical body, and a rear end portion of the pressure receiving member is fitted into the through hole so as to be movable back and forth.