JP2001327622A - Simultaneous opening valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a simultaneous opening valve capable of preventing the impairment of sealing performance or increase in pressure loss caused by the deformation or peeling of the sheet rubber of a butterfly valve integrally buried in the simultaneous opening valve. SOLUTION: A cylindrical shape retaining member 40 is fixed to the circumference of the sheet rubber 31 of the butterfly valve 30 through an adhesive. Otherwise, a plurality of projections 32, etc., is provided on the circumference of the sheet rubber 31, holes 41, etc., to be fitted to the projections 32, etc., of the sheet rubber 31 are bored in the shape retaining member 40, and the sheet rubber 31 is fitted to the shape retaining member 40 through the projections 32, etc., and the holes 41, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneous release valve used for fire extinguishing equipment such as sprinkler equipment and foam fire extinguishing equipment.

[0002]

2. Description of the Related Art A conventional fire extinguishing system using a simultaneous release valve is a place where a fire spreads when a fire occurs such as a parking lot and gasoline in a car is ignited, or a ceiling such as a theater is high. The building is located in a location where even if the closed sprinkler head is installed, the fire spreads before the hot air flow of the fire reaches the closed sprinkler head.

[0003] As an example of a fire extinguishing system installed in such a building, a diagram using a simultaneous opening valve and an open type head so that a fire extinguishing solution can be sprayed all at once to a protection compartment after a fire is detected to extinguish a fire. Five fire extinguishing systems will be installed.

[0005] The primary side chamber 3 of the simultaneous release valve 1 in FIG. 5 is connected to a water source 5, and a pump 6, a pressure adjusting tank 7 and the like are provided on the way, and a fire extinguishing liquid is filled in a primary side pipe 8. ing. An open-type sprinkler head or a foam head 9 (hereinafter referred to as “open-type head”) is installed in the secondary side chamber 4, and the valve of the simultaneous open valve 1 is always a compressed fluid and a compression spring sealed in the control chamber 23. The fire extinguisher is closed by the force of 26 and does not flow out into the secondary side chamber 4.

The simultaneous open valve 1 is opened when the pressure in the control chamber 23 is reduced by the operation of the sensing head 17 connected to the control chamber 23, and the simultaneous open valve 1 is opened. Fire extinguishing liquid is sprayed from the head 9 to extinguish the fire.

However, fire extinguishing equipment is required to be inspected periodically so that its function can be fully exhibited in the event of a fire when it is difficult to know when the fire will occur. In order to test the operation of the valve without sending the liquid, a butterfly valve 30 is provided so as to be embedded in the secondary side chamber of the simultaneous opening valve 1, and at the time of the test, the butterfly valve 30 is closed and the piping to which the open type head 9 is connected. Do not allow fire extinguishing fluid to flow.

The butterfly valve 30 has a structure in which a cylindrical sheet rubber 31 made of rubber is embedded in the inner periphery of the secondary side chamber 4 of the simultaneous opening valve 1, and an intermediate portion 34 of the sheet rubber 31 is a shaft. And the flow path is narrow.

A valve stem 35 of the butterfly valve 30 is provided on the seat rubber 31 so as to be orthogonal to the center of the secondary chamber 4 of the simultaneous opening valve. One end of the valve stem 35 is connected to the seat rubber 31 and the main body of the simultaneous opening valve. , And projecting to the outside, the valve stem 35 can be rotated by attaching a handle to the end. Further, a flat plate similar to the cross-sectional shape of the flow passage of the secondary chamber 4 is fixed to a portion of the valve rod 35 orthogonal to the secondary chamber 4, and a valve element 36 is installed. The valve body 36 can open and close the flow path by rotation of the valve rod 35.

Similarly, a butterfly valve 30 is provided in the primary chamber 3 of the simultaneous opening valve 1.

[0010]

However, as shown in FIG. 6, the simultaneous opening and closing operation of the sheet rubber 31 is caused by repeated opening and closing operations of the valve element 36 and by the momentum of the flowing water, causing the sheet rubber 31 to be turned or deformed. When the body 36 is closed, the sealing performance of the fire extinguishing liquid may be impaired, and when the valve body 36 is open, the pressure loss may increase when flowing water.

Accordingly, an object of the present invention is to provide a simultaneous release valve which prevents the sheet rubber from being turned up or deformed in a butterfly valve embedded in the simultaneous release valve.

[0012]

In order to achieve the above object, according to the first aspect of the present invention, a butterfly valve is integrated with a primary side chamber, a secondary side chamber, or both chambers of a simultaneous release valve used for a fire extinguishing system. The butterfly valve is embedded, and a shape-retaining material is fixed to the outer periphery of the sheet rubber of the butterfly valve.

When the butterfly valve embedded in the simultaneous release valve is repeatedly opened and closed, or when water is flowing, the sheet rubber and the shape-retaining material are fixed, so that the sheet rubber is not turned or deformed, and the sealing performance is improved. And the pressure loss does not increase.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the present invention, it is conceivable that the shape-retaining material is a cylinder having an inner diameter that is the same as or slightly larger than the outer circumference of the sheet rubber. The cylinder is
At the time of forming the sheet rubber, the cylinder and the sheet rubber material can be integrally formed by bringing the cylinder into close contact with the sheet rubber material.

The above-mentioned cylinder is formed by bending a plate material into a roll shape, and the seam portion is fitted by welding, brazing, or forming a fitting portion on two sides of the plate material corresponding to the seam portion as shown in FIG. May be connected.

Alternatively, the joint may not be connected if the plate material is not processed into the original shape after being processed into a roll shape. It is also possible to cut a pipe material having an inner diameter equal to or slightly larger than the outer circumference of the sheet rubber to an appropriate length and use it.

The shape of the shape-retaining material is not limited to a cylindrical shape.
As shown in FIG. 4A, a plurality of rectangular plates can be fixed to the outer periphery of the sheet rubber, or as shown in FIG. 4B, an elongated plate can be spirally wound around the outer periphery of the sheet rubber and fixed.

If the above-described shape-retaining material is fixed to the sheet rubber with an adhesive, the sheet rubber and the shape-retaining material adhere to each other, so that the sheet rubber is not deformed. It is also possible to directly bond the sheet rubber to the inner wall of the simultaneous release valve without using a shape-retaining material. In this case, if a water-resistant and re-peelable adhesive is used, the sheet rubber can be simultaneously bonded. The sheet rubber can be removed even after bonding inside the opening valve, so that maintenance is improved.

In order to make the sheet rubber and the shape-retaining material adhere to each other,
As shown in FIG. 2, a plurality of protrusions are provided on the outer periphery of the sheet rubber, and holes are formed in the shape-retaining material to be fitted with the protrusions of the sheet rubber, and the sheet rubber and the shape-retaining material are fitted by the protrusions and holes. It is also possible to wear.

In any of the above shape retaining materials, when the shape retaining material closes the valve stem through hole of the sheet rubber, it is necessary to form the valve stem through hole like the sheet rubber. .

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a fire extinguishing system using the simultaneous opening valve of the present invention, and FIG. 2 is a partially enlarged view of a butterfly valve of the simultaneous opening valve of FIG. The same components as those in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

The fire extinguishing equipment using the simultaneous opening valve and the mechanism of the simultaneous opening valve according to the present invention are the same as those of the conventional example, so that the explanation of the fire extinguishing equipment is omitted. The difference from the conventional example is
That is, a shape retaining material is provided on the outer periphery of the sheet rubber of the butterfly valve.

A plurality of projections 32 are provided on the outer periphery of the seat rubber 31 of the butterfly valve 30 shown in FIG. 2, and an upper part 33 of the projection has a trumpet shape whose end part is widened.

The shape-retaining material 40 fitted with the sheet rubber 31
Are cylindrical, and the projections 32 of the sheet rubber 31 are.
Holes 41... Are formed at the same positions as in FIG. The hole 41
Also has a flared shape that widens toward the outer peripheral surface of the cylinder in the same manner as the upper portion 33 of the projection 32.

To fit the sheet rubber 31 and the shape-retaining material 40, the sheet rubber 31 is inserted into the cylinder of the shape-retaining material 40, and the projections 32 of the sheet rubber 31 and the holes 4 of the shape-retaining material 40 are inserted.
1 are adjusted so that all the projections 32... And the holes 41.

With this configuration, the sheet rubber 31 and the shape-retaining material 40 come into close contact with each other, and when the opening / closing operation of the valve body 36 installed on the butterfly valve 30 is repeated or when flowing water, the sheet rubber 31 is attached to the sheet rubber 31. No turning or deformation occurs. Also, the projection 32 of the sheet rubber 31 and the hole 4 of the shape-retaining material 40
When the rubber mats 1 are fitted together, the sheet rubber 3
Since the one projection 32 does not project, there is no gap between the inner surface of the simultaneous release valve 1 and the outer surface of the shape retaining material 40.

Further, when the seat rubber 31 is worn due to opening and closing of the valve body 36, the shape retaining material 40 is removed and the seat rubber 3 is removed.
Only one is replaced, and the shape-retaining material 40 can be used continuously, which is economical.

The operation and inspection of the fire extinguishing system using the simultaneous opening valve of the present invention are the same as those of the conventional example, so that the description is omitted.

[0029]

As described above, according to the present invention, since the shape retaining material is installed on the sheet rubber of the butterfly valve embedded in the simultaneous release valve, the sheet rubber can be prevented from being turned up or deformed. Thereby, the sealing performance is not impaired and the pressure loss does not increase. Further, since the sheet rubber and the shape-retaining material are removable, the simultaneous opening valve has an economical effect that only the sheet rubber needs to be replaced when the sheet rubber is worn.

[Brief description of the drawings]

FIG. 1 is a fire extinguishing system using a simultaneous release valve of the present invention.

FIG. 2 is an enlarged view of a butterfly valve part of the simultaneous opening valve of FIG. 1;

Fig. 3 Shape example of joint part of shape-retaining material

Fig. 4 Shape example of shape-retaining material

FIG. 5: Fire extinguishing equipment using a conventional simultaneous release valve

FIG. 6 is a diagram showing a state in which a sheet rubber of a conventional simultaneous release valve is deformed.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Simultaneous release valve 30 Butterfly valve 31 Seat rubber 32 Projection 36 Valve element 40 Shape retaining material 41 Hole

Claims (5)

[Claims] A butterfly valve is integrally embedded in a primary chamber, a secondary chamber, or both chambers of a simultaneous release valve used for a fire extinguishing system, and a shape retaining material is fixed to an outer periphery of a sheet rubber of the butterfly valve. Simultaneous release valve. 2. The simultaneous release valve according to claim 1, wherein the shape retaining material has a cylindrical shape obtained by bending a plate material into a roll shape. 3. The seam of the shape-retaining material according to claim 2, wherein the seam is welded,
A simultaneous release valve which is connected by either brazing or fitting. 4. The simultaneous release valve according to claim 1, wherein the shape-retaining material according to claim 1 is fixed to a sheet rubber with an adhesive. 5. The sheet rubber according to claim 1, wherein a plurality of projections are provided on the outer periphery of the sheet rubber, and holes are formed in the shape-retaining material so as to be fitted with the projections of the sheet rubber. A simultaneous release valve with rubber and shape-retaining material detachably fitted.