JPH0577665U - valve - Google Patents

Abstract

(57) [Summary] [Purpose] Even when used in places with high water pressure, such as high-rise buildings, a certain amount of water can be discharged on the upper and lower floors. [Structure] An adjusting screw rod 33 is screwed into the hollow portion 20 of the valve rod 6. By adjusting the amount of screwing of the adjusting screw rod 33, it is possible to arbitrarily set the size of the gap between the valve body 22 and the valve seat 3 when the valve is opened.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a valve that can be suitably used, for example, as a water stop cock connected in the middle of a water supply pipe.

[0002]

[Prior Art]

 For example, a globe valve is widely used for a water stopcock. It is well known that this globular valve can not only close the fluid but also adjust the flow rate by opening and closing the valve by operating the handle.

[0003]

[Problems to be solved by the device]

 However, when the above-mentioned globular valve is used as a stopcock in a place with high water pressure, such as in a high-rise building or a high-rise complex, even if the handles are rotated to the same opening angle on the upper floor and the lower floor. There was a problem that the flow rate was different. Therefore, the purpose of the present invention is that even when it is used as a water stopcock in a place with high water pressure such as a high-rise building, the handle can be rotated at the same opening angle on the upper floor and the lower floor to discharge a fixed amount of water. There is a point in doing so.

[0004]

[Means for Solving the Problems]

 The present invention not only allows the flow rate to be adjusted by opening and closing the valve with the handle, but also allows the setting of the gap size between the valve body and the valve seat when the valve is opened, in addition to the handle rotation operation. By doing so, the flow rate can be adjusted according to the fluid pressure difference. Therefore, in the present invention, as shown in the illustrated example, the valve rod 6 is rotatably incorporated directly above the valve seat 3 in the valve box 1 by the handle 16, and the valve body 22 is prevented from rotating at the tip of the valve rod 6. It is premised on a valve having a structure in which the valve body 22 can be freely moved up and down, and the valve body 22 can be brought into and out of contact with the valve seat 3 by the rotation operation of the valve rod 6. The adjusting screw rod 33 is formed in a hollow cylindrical body, and the adjusting screw rod 33 is screwed into the hollow portion 20, and the tip of the adjusting screw rod 33 protruding downward from the valve rod 6 faces the valve seat 3 of the valve body 22. It is abutted against the side opposite to the side.

[0005]

[Action]

 The adjusting screw rod 33 screwed into the hollow portion 20 of the valve rod 6 adjusts the screwing amount of the adjusting screw rod 33 to arbitrarily change the gap size between the valve body 22 and the valve seat 3 when the valve is opened. Work. The valve element 22 provided in a non-rotating manner and free to move up and down with respect to the tip of the valve rod 6 exerts a fluid backflow preventing function like a conventional valve of this type.

[0006]

【Example】

 An embodiment in which the valve according to the present invention is applied to a globe valve will be described with reference to the drawings. FIG. 1 is a vertical sectional view showing the valve open state, FIG. 2 is a valve closed state, and FIG. 3 is a disassembled perspective view. This valve is basically composed of a valve box 1, a lid 4, a valve rod 6, a valve body 22, a valve seat 3, and an adjusting screw rod 33, and is constituted by a valve rod retainer 9, a valve retainer 27, a handle 16 and other parts. It

The valve box 1 is connected in the middle of the water supply pipe P, and has a partition wall 2 forming an S-shaped flow passage therein, and a valve seat 3 is formed on the partition wall 2. The lid 4 is formed in a stepped cylindrical shape, and the lower end of the outer periphery thereof is screwed and coupled to the valve box 1 via an O-ring 5. The valve rod 6 is formed in a vertically penetrating hollow cylindrical body and has a flange portion 7 in the longitudinally intermediate portion of the outer periphery thereof, and the flange portion 7 slides on a step portion 8 formed to project inside the lid 4. It is inserted and supported in the lid 4 so that

The valve rod retainer 9 has a cylindrical portion 11 that is inserted into the valve rod 6 via an O-ring 10, and a flange 12 that extends to the outer periphery of the upper end of the cylindrical portion 11. A state in which the screw 13 on the outer circumference of the cylindrical portion 11 is screwed into the internal thread 14 on the inner circumference of the lid 4 until it comes into contact with the end, so that the lower surface of the cylindrical portion 11 presses the upper surface of the collar portion 7 of the valve rod 6. I am doing it. An O 2 ring 15 is interposed between the cylindrical portion 11 of the valve stem retainer 9 and the upper end of the inner surface of the lid 4.

The handle 16 has a polygonal hole 17 a in its hub 17, and the hole 17 a is fitted into the polygonal upper end 18 of the valve rod 6 in a non-rotating manner so that By tightening the tightening screw 19 to the screw 21 on the inner circumference of the hollow portion 20 of the valve rod 6, the handle 16 is coupled so as not to come out upward from the valve rod 6.

The valve body 22 has a boss portion 25 having a polygonal outer peripheral surface 24 on its upper surface side, and synthetic rubber 26 such as NBR is bonded to the lower surface side and outer periphery thereof. The valve body 22 is provided at the lower end of the valve rod 6 via a valve body retainer 27 so as to be free to move vertically and not to rotate due to fluctuations in water pressure. The valve body retainer 27 has a polygonal tubular portion 28 and a polygonal flange 29 at the upper end of the tubular portion 28, and a reverse screw 30 is provided on the inner circumference of the tubular portion 28. The valve body retainer 27 is screwed into a reverse screw 31 provided on the outer periphery of the lower end of the collar portion 7 of the valve rod 6, and is fitted in a non-rotating manner on the polygonal inner peripheral surface 32 below the collar portion 8 of the lid 4. To combine. The valve body 22 has a polygonal outer peripheral surface 24 of the boss portion 25 fitted to a polygonal inner peripheral surface 32 of the lower end of the lid 4, and an inner peripheral surface 23 of the valve body 22 on the outer periphery of a cylindrical portion 28 of the valve retainer 26. It is loosely fitted to the surface.

The adjusting screw rod 33 is screw-inserted below the tightening screw 19 in the hollow portion 20 of the valve rod 6, and the adjusting screw rod 33 can be turned from above the valve rod 6 with a screwdriver or the like. The upper end of the valve rod 6 has a concave groove 34 so that it can be protruded downward from the hollow portion 20 of the valve rod 6, and the tip 33a is in contact with the inner bottom surface of the boss portion 25 of the valve body 22. An O-ring 35 is interposed between the adjusting screw rod 32 and the non-threaded portion in the hollow portion 20.

In the valve thus configured, when the handle 16 rotates the valve rod 6 in the closing direction, as shown in FIG. 2, the valve body pressing member 27 moves straight downward and the synthetic rubber of the valve body 22 is moved. 26 is pressed against the valve seat 3 in an airtight manner to close the flow path. At this time, the valve body 22 is free to move up and down, so that it is pressed against the valve seat 3 even if it receives backflow pressure, so that backflow can be prevented.

On the contrary, when the valve rod 6 is rotated in the opening direction by the handle 16, as shown in FIG. 1, the valve body pressing member 27 retreats upward, so that the valve body 22 can freely move upward. The valve body 22 is pushed up by water pressure to open the flow path.

In this case, in order to variably adjust the gap between the valve body 22 and the valve seat 3 at the time of opening the valve according to the water pressure, the tightening screw 19 is removed and the adjusting screw rod 33 is turned with a screwdriver or the like. Then, the screwing degree of this may be adjusted. Therefore, even when using this valve in a place with high water pressure such as in a high-rise building, it can be adjusted so that a certain amount can be output on the upper and lower floors. Incidentally, this adjustment is usually done by the contractor.

The valve of the present invention can be applied to an angle valve and the like in addition to the above-mentioned globe valve. Further, in addition to the water stopcock, it can be applied to a water tap, and also to an oil valve or the like by replacing Teflon (trade name) as the synthetic rubber 26.

[0016]

[Effect of the device]

 According to the present invention, the flow rate can be adjusted not only by opening and closing the valve body 22 by the handle 16 but also by variably adjusting the clearance between the valve body 22 and the valve seat 3 by adjusting the adjustment screw 33. Since it can be adjusted, it has the advantage of being able to discharge a certain amount of water or oil even when used at high pressure.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a valve open state.

FIG. 2 is a vertical sectional view showing a valve closed state.

FIG. 3 is an exploded perspective view.

[Explanation of symbols]

 1 valve box 3 valve seat 6 valve rod 16 handle 22 valve disc 33 adjusting screw rod

Claims (1)

[Scope of utility model registration request] 1. A valve rod 6 is rotatably incorporated by a handle 16 directly above a valve seat 3 in a valve box 1, and a valve body 22 is provided at the tip of the valve rod 6 so as to prevent rotation and to move freely up and down. The
In the valve in which the valve body 22 can be brought into and out of contact with the valve seat 3 by the rotation operation of the valve rod 6, the valve rod 6 is formed in a hollow cylindrical body which penetrates vertically, and the adjusting screw rod 33 is provided in the hollow portion 20. Thread the adjustment screw rod 3
The valve 33 has a tip 33a projecting downward from the valve rod 6 and is brought into contact with a surface of the valve body 22 opposite to the side facing the valve seat 3.