JPS6327205Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is designed to adjust the gas pressure by connecting in a straight line the delivery side piping of a gas tank or liquefied gas cylinder that stores various gases and the receiving side piping leading to the department where it is used. This relates to a pressure regulator.

Conventionally used gas pressure regulators adjust the pressure of the decompression chamber by rotating a handle on an adjustment shaft that protrudes from the outside of the decompression chamber, which is located opposite the valve chamber on the high-pressure gas supply source side. Because it has a structure that adjusts the pressure to Since the pressure reducing device is internally set at a constant pressure and cannot be adjusted from the outside, a pressure regulator must be provided to adjust the pressure as desired.

The present invention was devised to solve the above-mentioned inconveniences, and it interconnects the pipes on the receiving side fixedly arranged in a straight line and the piping on the sending side connected to the gas supply source in a straight line, and The object of the present invention is to provide a gas pressure regulator that can arbitrarily adjust the pressure from the above.

An example of the implementation of the present invention will be described in detail based on the drawings. A valve chamber 3 communicating with the primary side connection port 2 is formed at one end (right side of the drawing) of the valve frame body 1.
A regulating valve 6 which can be compressed by a small spring 5 toward the end wall 4 of the valve chamber 3 is disposed in the valve chamber 3, and the regulating valve 6 is provided at the center of the end wall 4. It is brought into elastic contact with the valve seat portion 8 at the periphery of the hole 7 so as to be able to come into contact with and separate from it.

A fitting recess 9 having a diameter larger than the valve chamber 3 is formed concentrically with the valve chamber 3 in the valve frame body 1 . The piston body 10 defines the fitting recess 9 to form a decompression chamber 12, and the piston body 10 has a central convex portion on the front end surface. A valve shaft 14 protruding from the center of the seat 13 is loosely inserted into the valve hole 7 of the end wall 4, and the tip of the valve shaft 14 is in contact with the regulating valve 6 so as to be able to come into contact with and separate from it. A through hole 16 is bored in the center of the rod portion 15 of the body 10, and one end of the through hole 16 is an opening 17 in the side of the central convex seat 13 of the piston body 10. 16 is communicated with the reduced pressure chamber section 12.

Furthermore, an engaging flange 18 is provided on the outer peripheral surface of the valve casing 1 near the other end (left side in the drawing).
Axial cut guide grooves 20, 20 are provided oppositely on the upper and lower sides of the peripheral wall surface 19 extending from 8 to the other end of the valve frame body 1, and a male screw portion 21 is provided at the other end of the valve frame body 1. is formed.

A lid frame body 23 provided with a secondary side connection port 22 is screwed onto the male screw portion 21.
A connecting shaft portion 24 is protruded from the center of the inner side of the
The connecting shaft portion 24 has a communication hole 25 that communicates with the secondary side connection port portion 22, and the communication hole 25
An enlarged fitting hole 26 is concentrically formed at the end of the piston body 10, and the end of the rod portion 15 of the piston body 10 is tightly inserted into the enlarged fitting hole 26 via an O-ring 27. In addition, they are fitted in a freely sliding manner, and the decompression chamber section 1
2 is the through hole 16 of the rod portion 15 and the enlarged fitting hole portion 2
It is communicated with the secondary side connection port 22 of the lid frame body 23 through a communication hole 25 that is continuous with the main body 6 .

An adjustment body plate 28 is further slidably fitted onto the connecting shaft portion 24, and a body portion 29 of the adjustment body plate 28 is slidably fitted into the fitting recess 9 of the valve frame body 1. , and guide protrusions 30 , 30 are formed protrudingly on the upper and lower outer sides of one end of the body 29 .
The guide protrusions 30, 30 are inserted into the cut guide groove 2 of the valve frame body 1.
Male screws 31, 31 are cut into the ends of the guide protrusions 30, 30, which are slidably inserted in the guide grooves 20, 20 and project outward from the cut guide grooves 20, 20. .

The male screws 31, 31 of the guide protrusions 30, 30 are fitted onto the valve casing 1 freely by engaging the inner flange 32 with the outer engaging flange 18 of the valve casing 1. A female screw portion 34 provided inside the adjustment ring 33 is screwed together, and a spring 35 is disposed between the adjustment body plate 28 and the piston body 10.
By rotating the adjustment ring 33 in the forward direction, the adjustment body plate 28
is operated forward toward the piston body 10, and the spring 3
5, the piston body 10 is pushed toward the valve chamber 3, and the adjustment ring 33 is rotated in the opposite direction to the above, thereby retracting the adjustment body plate 28, thereby reducing the pressing force of the spring 35 against the piston body 10. It is designed to reduce the

Next, to explain the operation of the present invention, the piston body 10 is inserted into the fitting recess 9 which is connected to the valve chamber 3 which is communicated with the primary side connection port 2 at one end of the valve frame body 1 as described above. They are tightly and slidably fitted to form a decompression chamber 12 separated by the piston body 10, and a valve shaft 14 protruding from the center of the piston body 10 is connected to the valve chamber 7.
The tip of the valve shaft 14 is brought into contact with the regulating valve 6 in the valve chamber 3 which is brought into elastic contact with the valve seat 8 of the valve hole 7 with the small spring 5, and further A through hole 16 communicating with the decompression chamber 12 is provided in the rod portion 15 of the piston body 10, and a lid frame body 23 having a secondary side connection port 22 is attached to the other end of the valve frame body 1. The end of the rod portion 15 of the piston body 10 is tightly and slidably connected to the end of the communication hole 25 that communicates with the secondary side connection port 22 of the connecting shaft portion 24 provided protruding from the center inside the body 23. and the above-mentioned connecting shaft portion 2
An adjustment body plate 28 is slidably fitted onto the adjustment body plate 28, and a spring 35 is disposed between the adjustment body plate 28 and the piston body 10, and a spring 35 is provided above and below one end of the body portion 29 of the adjustment body plate 28. A cut guide groove 2 in which guide protrusions 30, 30 are provided on the upper and lower sides of the peripheral wall surface 19 near the other end of the valve frame body 1.
0, 20 to freely slide, and the notch guide groove 2
Since the female screw part 34 of the adjustment ring 33, which is rotatably fitted to the outer position of the valve casing body 1, is screwed to the ends of the guide protrusions 30, 30 that can protrude outward from the valve body 1, the gas High pressure side piping connected to the supply source (not shown)
is connected to the primary side connection port 2, and the reduced pressure side piping (not shown) connected to the usage section is connected to the secondary side connection port 2.
2, the high-pressure side piping and the reduced-pressure side piping, which are fixedly arranged together, can be interconnected in a straight line, and the adjustment ring 33, which can be freely rotated in the fixed position on the valve frame body 1, can be connected to the valve body 1. By rotating, the adjustment body plate 28 in the valve frame body 1, in which the male screw portion 31 of the guide protrusion 30 is screwed into the female screw portion 34 of the adjustment ring 33, is moved forward toward the piston body 10. let's go, spring 35
The regulating valve 6 is pressed through the valve shaft 14 protruding from the front end surface of the piston body 10.
is pushed against the small spring strip 5, the regulating valve 6 is appropriately separated from the valve seat part 8, and the primary side connection port part 2 is moved through the gap between the valve seat part 8 and the regulating valve 6. The valve chamber 3 connected to
3, the adjustment body plate 28 is moved backward toward the lid frame body 23 in the opposite direction to the above, the pressure on the spring 35 is released, and the adjustment valve 6 is pushed by the small spring 5. The valve hole 7 is closed by bringing the regulating valve 6 into pressure contact with the valve seat part 8, and the valve chamber 3 is connected to the primary side connection port 2 and the secondary side connection port 22. Communication with the decompression chamber section 12 can be cut off.

That is, according to the present invention, the piping connected to the gas supply source arranged and fixed in a straight line and the pressure reduction side piping connected to the usage department are simply interconnected in a straight line, and the pressure is set to a predetermined pressure and the pressure is reduced. In addition to smoothly supplying gas to the usage section, by rotating the adjustment ring 33 that rotates in a fixed position on the valve frame 1 in the opposite direction, the pressure of the gas supplied to the usage section can be easily adjusted as desired. It can be adjusted to increase or decrease, and when not in use,
It is effective and suitable as a gas pressure regulator that can cut off the gas supply from the supply side to the usage department and is placed in the middle of piping that requires fixed alignment in a straight line.

[Brief description of the drawings]

The drawings show an example of the implementation of the present invention, and FIG. 1 is a partially cutaway plan view, FIG. 2 is a side view of the main part, and FIG. 3 is a sectional view taken along line AA in FIG. 2. FIG. 4 is a front view of the adjustment body plate, FIG. 5 is a partially cutaway side view of the adjustment body plate, and FIG. 6 is a partially cutaway plan view of the same. 1...Valve body, 2...Primary side connection port, 3...
Valve chamber, 6... Adjustment valve, 7... Valve hole, 9... Fitting recess, 10... Piston body, 12... Decompression chamber part, 1
4... Valve stem, 15... Rod part, 16... Through hole,
20... Cut guide groove, 22... Secondary side connection port,
23... Lid frame body, 24... Connecting shaft portion, 25... Communication hole, 28... Adjustment body plate, 30... Guide protrusion, 3
3...adjustment ring, 34...female thread, 35...spring.

Claims (1)

[Scope of utility model registration request] A valve chamber 3 communicates with a primary side connection port 2 of a valve housing 1.
A piston body 10 is tightly and slidably fitted into a fitting recess 9 connected to the valve chamber 3, forming a pressure reduction chamber 12. A valve shaft 14 protruding from the front end surface of the piston body 10 is inserted into the valve hole 7, and the tip of the valve shaft 14 is brought into contact with the adjustment valve 6 of the valve chamber 3. A cover frame 23 having a secondary side connection port 22 is attached to the other end of the valve frame 1.
The rod portion 15 of the piston body 10 having a through hole 16 communicating with the decompression chamber 12 is tightly and slidably fitted into the end of the communication hole 25 communicating with the secondary side connection port 22 drilled in the connecting shaft portion 24 of the cover frame 23, and an adjustment body plate 28 is slidably fitted onto the connecting shaft portion 24 of the cover frame 23.
A spring 35 is disposed between the plate 28 and the adjustment plate 28.
The guide protrusion 30 provided at one end of the valve housing 1 is slidably inserted into the cut guide groove 20 of the valve housing 1, and the guide protrusion 3
0 is fitted with a female screw portion 34 of an adjustment ring 33 which is rotatably mounted at a fixed position on a valve housing 1.