JP2001056100A - Pressure regulator for fitting to pipe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate handling and reduce size and weight by connecting a pressure reducing part to a flow opening and closing part through a by-path of a main valve part to communicate with each other, and connecting the flow opening and closing part to the demand side to be freely interrupted. SOLUTION: A supply passage 5 for primary pressure gas is connected to a main valve part 1 to communicate with each other. the main valve part 1 is so constructed as usual that a primary valve pin P is moved axially interlocking with the operation of a pressure reducing part 2 to open and close a passage in co-operation with an O-ring R. A pressure reducing valve 2 is connected to a flow opening and closing part 3 through an outer by-path 6 of the main valve part 1, and the flow opening and closing part 3 is connected to the demand side 7 to be freely interrupted. A pressure gas supply pipe is connected to the supply passage 5 of a pressure regulator to communicate with each other. Compressed air flowing in the supply passage 5 is passed through the main valve part 1 and reduced to secondary pressure through the pressure reducing part 2 to flow to the flow opening and closing part 3 through the by-path 6. Gas blocked up by the flow opening and closing part 3 is released to the demand side 7 by opening the flow opening and closing part 3. Thus, handling is facilitated and the structure can be simplified and reduced in weight.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure regulator for pipe installation for supplying a pressurized gas for injection when using a physiological tissue adhesive at the time of operation or the like, and particularly to a main valve portion and a pressure reducing portion. And an integrated flow opening / closing unit.

[0002]

2. Description of the Related Art Conventional pressure regulators for pipe installation are:
A pipe fitting is connected to a pressure gas supply pipe arranged on the wall or suspended from the ceiling, the supplied primary pressure gas is depressurized by a pressure reducing valve, and the pressure is connected to a connected pressure gauge and a flow opening / closing valve. This type supplies the next pressure and is released from the flow rate on-off valve. In the case of this type of pressure regulator, each constituent unit is an individual product, and a single pressure regulator is configured by combining these products.

[0003]

As a result, conventional product forms are bulkier and heavier. Such a product has a large load on the pressurized gas supply port and the pipe mounting part due to its size and weight, and the pressure regulator needs to be attached and detached each time it is used, that is, every operation. There was a problem that was troublesome.
SUMMARY OF THE INVENTION An object of the present invention is to provide a pressure regulator for pipe installation, which is compact and lightweight, and solves such a problem.

[0004]

According to a pressure regulator for pipe mounting according to the present invention, a main valve section, a pressure reducing section, and a flow opening / closing section are arranged on the same axis with the main valve section as an intermediate part, and the primary pressure is controlled. A gas supply passage is connected to the main valve portion. The main valve section opens and closes the supply path in conjunction with the operation of the pressure reducing section. The pressure reducing unit is connected to the flow opening / closing unit via a bypass of the main valve unit. The flow opening / closing unit is connected to the demand side so as to be freely shut off.

[0005] The body may have a circular or square cross section. In most cases, the pressurized gas supply pipe is provided from the floor to a wall about the height of a person, or is suspended from the ceiling. The pressure gas supply pipe is connected to the supply path of the pressure regulator.

This pressure regulator has a structure in which the secondary pressure reduced by the pressure reducing unit is released in the axial direction of the pressure regulator by the flow opening / closing unit. If the gas is discharged downward, the tube length between the secondary pressure gas source and the practitioner becomes the shortest, and the device is easy to use.

When the pressure gas supply pipe is disposed on the wall near the floor, the pressure regulator may be used in an inverted state. In an extreme case, the axis of the pressure regulator may be set in the horizontal direction. It may be.

An example of the means for releasing gas in the axial direction is as follows. The decompression unit and the flow opening / closing unit, which are opposed to each other with the main valve unit interposed therebetween on the axis, are connected by a bypass. Then, the secondary pressure gas is released by opening the flow opening / closing unit.

That is, the compressed gas that has flowed in from the back primary side is depressurized through the decompression section, and becomes a secondary pressure gas. The compressed gas having the secondary pressure flows through the bypass to the flow opening / closing unit. The gas closed by the flow opening / closing section is released to the demand side by opening the flow opening / closing section.

The bypass may have one end opening to the secondary pressure chamber of the main valve portion and the other end opening to the flow chamber of the flow opening / closing portion. In this case, the bypass is easily formed,
Further, since the secondary pressure gas is stored in the secondary side pressure chamber or the flow rate chamber, the processing becomes easy.

The flow opening / closing section has the flow chamber located on the axis, a screw plug for closing the flow chamber, a valve seat, a hollow stem valve, and an opening / closing dial. The valve seat is fixed with respect to the main valve portion. The hollow stem valve has a valve port at one end opposed to the valve seat in the flow rate chamber through the screw plug, and the valve port is connected to the valve seat by a spring interposed between an outer flange and the screw plug. With a tendency to be closed. In addition, the notch of the flange engages with the stopper of the screw plug, and regulates the rotation position of the open / close dial between the connection cap having a shaft hole screwed into the male screw on the outer surface of the other end and the screw plug. Then, the hollow stem valve may be configured to be attached to and detached from the valve seat by rotation of the opening / closing dial. In this case, simply rotating the opening / closing dial moves the hollow stem valve against the spring or on the axis line by the action of the spring to attach / detach to / from the valve seat and open / close the valve port. And it is easy to shut off, and there is no danger of gas leakage at the time of closing.

The supply passage may communicate from the outer surface of the main body to the main valve portion at right angles to its axis. In this case, the distance between the supply path and the main valve is the shortest, the structure is simple, and the chance of gas leakage is reduced.

[0013] The main valve portion may have a pressure gauge on an outer surface thereof, and the pressure gauge may communicate with the bypass. in this case,
The bypass can be used also as a gas supply path for the pressure gauge, and the structure is simplified.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a main valve section, 2 is a pressure reducing section, 3 is a flow rate opening / closing section, and these are the same axis 4 with the main valve section 1 at the middle.
Arranged above. The supply path 5 for the primary pressure gas is connected to the main valve 1. In the main valve section 1, the primary valve pin P moves in the axial direction in conjunction with the operation of the pressure reducing section 2, and the O-ring R
It is of a normal type that opens and closes a passage in cooperation with. The pressure reducing section 2 is connected to a flow opening / closing section 3 via a bypass 6 outside the main valve section 1, and the flow opening / closing section 3 is connected to a demand side 7 so as to be freely shut off. A pressure gas supply pipe is connected to the supply path 5 of the pressure regulator.

The compressed gas that has flowed into the supply path 5 through the pressure gas supply pipe passes through the main valve 1, is reduced to a secondary pressure through the pressure reducing section 2, and flows from the bypass 6 to the flow opening / closing section 3. The gas closed by the flow opening / closing section 3 is released to the demand side 7 by opening the flow opening / closing section 3.

The bypass 6 has one end opening to the secondary pressure chamber 8 of the main valve section 1 and the other end opening to the flow chamber 9 of the flow opening / closing section 3. This facilitates the formation of the bypass 6. Further, the secondary pressure gas is supplied to the secondary pressure chamber 8 or the flow chamber 9.
, The processing becomes easier.

The flow opening / closing section 3 includes a flow chamber 9 located on the axis 4, a screw plug 10 for closing the flow chamber 9, a valve seat 11,
It has a hollow stem valve 12 and an opening / closing dial 13. This valve seat 11 is fixed with respect to the main valve portion 1. Here, "Seki"
The reason is that the valve seat 11 may be fixed directly to the main valve portion 2 or may be fixed indirectly to the main valve portion 2 through various stoppers as shown in the drawing. Means that. The hollow stem valve 12 is loosely passed through the screw plug 10, one end of the valve port 14 faces the valve seat 11 in the flow chamber 9, and the valve port is formed by a spring 16 interposed between the outer flange 15 and the screw plug 10. 1
4 is given a tendency to be closed by the valve seat 11. Further, the notch 17 of the flange 15 engages with the detent 18 of the screw plug 10, and the rotational position of the opening / closing dial 13 between the screw plug 10 and the connection cap 21 having the shaft hole 20 screwed into the male screw 19 on the outer surface of the other end. Make regulations. The hollow stem valve 12 is attached to and detached from the valve seat 11 by rotation of the opening / closing dial 13. Then, just rotate the open / close dial 13,
The hollow stem valve 12 moves on the axis 4 against the spring 16 or by the action of the spring 16 to be attached to and detached from the valve seat 11, and the valve port 14 is opened and closed. Therefore, it is easy to supply and shut off the secondary pressure gas, and there is no fear of gas leakage at the time of closing.

The supply passage 5 communicates with the main valve 1 at right angles to the axis 4 thereof. In this case, the distance between the supply path 5 and the main valve section 2 is minimized, the structure is simple, and the chance of gas leakage is reduced.

The main valve section 1 has a pressure gauge 31 on its outer surface, and this pressure gauge 31 communicates with the bypass 6. In this case, the bypass 6 can be used also as a gas supply path for the pressure gauge 31, and the structure is simplified.

In the drawings, 41 is a pressure adjusting dial, 42 is a pipe mounting nozzle, and 43 is a cap nut for mounting the same.

[0021]

According to the present invention, the main valve section, the pressure reducing section, and the flow opening / closing section are integrated, so that they do not become bulky as in the conventional product form, the weight is reduced, and the pressure gas supply piping is reduced. The load applied to the mounting portion can be reduced, and the handling of attaching and detaching the pressure regulator every operation is easy.

According to the second aspect, the formation of the bypass is facilitated. Further, since the secondary pressure gas is stored in the secondary pressure chamber or the flow rate chamber, the processing can be easily performed.

According to the third aspect of the present invention, the hollow stem valve moves against the spring or moves on the axis by the action of the spring and is attached to and detached from the valve seat by simply rotating the opening / closing dial. This makes it easier to supply and shut off the secondary pressure gas, and eliminates the risk of gas leakage at the time of closing.

According to the fourth aspect, since the distance between the supply path and the main valve portion is minimized, the structure is simple and the chance of gas leakage can be reduced.

According to the fifth aspect, the bypass can be used also as a gas supply path for the pressure gauge, and the structure can be simplified.

[Brief description of the drawings]

FIG. 1 is a front view showing a specific example of a pressure regulator for pipe installation according to the present invention.

FIG. 2 is a central longitudinal sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main valve part 2 Decompression part 3 Flow opening / closing part 4 Axis line 5 Supply path 6 Bypass 7 Demand side 8 Secondary pressure chamber 9 Flow chamber 10 Screw 11 Valve seat 12 Hollow stem valve 13 Opening / closing dial 14 Valve opening 15 Flange 16 Spring 17 Notch 18 Non-rotating 19 Male screw 20 Shaft hole 21 Connection cap 31 Pressure gauge

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) G05D 16/10 G05D 16/10 H (72) Inventor Akira Watanabe 3-12-15, Aoi, Adachi-ku, Tokyo F-term (reference) in Nippon Carbon Gas Co., Ltd. (reference)

Claims (5)

[Claims] 1. A main valve section (1), a pressure reducing section (2), and a flow opening / closing section.
(3) are arranged on the same axis (4) with the main valve part (1) being in the middle, a supply path (5) for primary pressure gas is connected to the main valve part (1), The main valve section (1) opens and closes the supply path (5) in conjunction with the operation of the pressure reducing section (2), and the pressure reducing section (2) includes the main valve section (1).
Characterized in that it is connected to the flow opening / closing section (3) through a bypass (6), and the flow opening / closing section (3) is connected to the demand side (7) so as to be able to be shut off. Pressure regulator. 2. The bypass (6) has one end opening to the secondary pressure chamber (8) of the main valve portion (1) and the other end having a flow rate chamber (9) of the flow rate opening / closing section (3). The pressure regulator for pipe installation according to claim 1, wherein the pressure regulator is open to the pipe. 3. The flow opening / closing section (3) includes a flow chamber (9) located on the axis (4), a screw plug (10) for closing the flow chamber (9),
It has a valve seat (11), a hollow stem valve (12) and an opening and closing dial (13),
The valve seat (11) is fixed with respect to the main valve part (1), and the hollow stem valve is provided.
(12), the screw plug (10) is loosely passed, and the valve port (14) at one end faces the valve seat (11) in the flow chamber (9), and the outer surface flange (15)
The valve port (14) is given a tendency to be closed by the valve seat (11) by a spring (16) interposed between the screw plug (10) and the notch (17) of the flange (15). The stopper (10) is engaged between the stopper (18) of the screw (10) and the connection cap (21) having the shaft hole (20) screwed to the male screw (19) on the outer surface of the other end. The open / close dial
The rotation position of (13) is regulated, and the hollow stem valve (12) is detachably attached to the valve seat (11) by rotation of the open / close dial (13). Pressure regulator for piping installation. 4. The supply passage (5) is connected to the main valve portion (1) by its axis.
2. The pressure regulator for pipe installation according to claim 1, wherein the pressure regulator is orthogonally connected to (4). 5. The pipe mounting according to claim 1, wherein the main valve portion (1) is provided with a pressure gauge (31) on an outer surface, and the pressure gauge (31) communicates with the bypass (6). For pressure regulator.