KR200374392Y1 - Pressure reducing valve with noise reduction function - Google Patents

Abstract

The present invention relates to a noise reduction type pressure reducing valve, comprising: a pressure reducing valve having a body having a communication hole for opening and closing by a disk, the partition having a first compartment having an inlet and a second compartment having an outlet formed therein; The cylindrical sound velocity reduction member 90 has a plurality of discharge holes 92 formed radially to receive the water of the first compartment through the communication hole 22 and to discharge the water in the second compartment radially. It is characterized in that the fixed installation so as to be located in the two compartments 18, thereby preventing the flow of sound caused by the vortex on the low pressure side, as well as having an excellent effect of increasing the flow rate.

Description

Pressure reducing valve with noise reduction function

The present invention relates to a noise reduction type pressure reducing valve, and more particularly, to a noise reduction type pressure reducing valve that can prevent the flow rate sound caused by the vortex on the low pressure side.

In general, a pressure reducing valve is installed in a pipeline for supplying water to a general house, apartment, or public building, and the pressure reducing valve has a function of reducing the pressure of water flowing through the primary side to a predetermined pressure and discharging it to the secondary side.

In recent years, modular pressure reducing valves including a foreign material removal function, which is a secondary function of the pressure reducing function, are used widely.

The pressure check is performed before the modular pressure reducing valve is installed in the conduit. Conventionally, after the construction of the hydraulic pipe, the hydraulic pressure check is carried out. Then, the pressure reducing valve is dismantled and the pressure reducing valve is installed in the pipeline. As shown in the pressure reducing valve may be provided with its own bypass function.

The pressure reducing valve shown in FIG. 1 includes a body 10 having a partition wall 20 separating the inlet 12 and the outlet 14 and a communication hole 22 formed in the partition wall 20, and the communication hole ( A disk 24 moving to open and close 22, first and second deflecting members 26 and 28 providing a biasing force to move the disk 24 in opposite directions, and the second The diaphragm 36 interposed between the biasing member 28 and the disk 24 and deformed in the moving direction of the disk 24 by the pressure of water, and an adjustment for adjusting the biasing force of the second biasing member 28. And a bypass means for connecting the inlet 12 and the outlet 14 so as to maintain the screw 40 and the disk 24 in a state moved away from the communication hole 22. Has

In addition, the bypass means has a bypass stem 52 rotatably mounted to the body 10 and detachably coupled to the disk 24. In addition, the disk 24 is fixedly installed in the disk holder 32, the disk holder 32 is formed with a female screw portion 32a, the bypass stem 52 is coupled to the female screw portion 32a It has a male screw portion 52b.

In addition, one end of the connector 56 is fixed to the inlet 12 of the body 10 by screwing. The connector 56 may be fixed to the stop valve (not shown) via a union nut (not shown).

After the pressure reducing valve having such a configuration is installed in the pipeline, the hydraulic pressure check is performed using the bypass function. When the hydraulic pressure checking is completed, the disk 24 fixed to the disk holder 32 as shown in FIG. The depressurizing member 26 and the second deflecting member 28 perform a decompression function.

However, in the conventional pressure reducing valve, when the disc 24 opens the seat 30 installed in the communication hole 22, the flow of water passing through the seat 30 forms a vortex T on the low pressure side. This has a fatal problem in which noise, that is, flow velocity sound, is caused by the vortex T.

In particular, the formation of such a vortex (T) was to disturb the flow of water to cause pressure loss, as well as to reduce the flow rate to cause complaints of consumers living in apartments or high-rise buildings.

The present invention has been made to solve such a problem, it is an object of the present invention to provide a noise reduction type pressure reducing valve that can prevent the flow rate sound caused by the vortex on the low pressure side.

1 is a cross-sectional view showing a pressure reducing valve according to the prior art as a whole;

Figure 2 is a cross-sectional view showing a noise reduction pressure reducing valve according to the present invention as a whole;

3 is a cross-sectional view showing a state in which the pressure reducing valve of the present invention has a normal pressure reducing function after the pressure check.

Figure 4 is a schematic diagram showing a case in which a stop valve is installed in the pressure reducing valve of the present invention.

※ Explanation of symbols about main part of drawing ※

10: body 12: inlet

14 outlet 20 partition wall

22: communication hole 24: disk

26: first deflection member 28: second deflection member

32: disc holder 32a: female thread

36: diaphragm 40: adjusting screw

52: bypass stem 52b: male thread portion

60: stop valve 70: union nut

80: connector 90: flow velocity reduction member

92: discharge hole

As a technical configuration for achieving the above object, the present invention has a body formed with a partition wall separating the first compartment in which the inlet is formed and the second compartment in which the outlet is formed, and has a body in which the communication hole is opened and closed by a disk. In the pressure reducing valve, a cylindrical flow rate sound reducing member having a plurality of discharge holes radially positioned in the second compartment to receive the water of the first compartment through the communication hole and to be radially discharged into the second compartment. By providing a noise reducing pressure reducing valve characterized in that the fixed installation.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a cross-sectional view showing a noise reduction pressure reducing valve according to the present invention as a whole.

The pressure reducing valve of the present invention has a body 10 having an inlet 12 through which water is introduced and an outlet 14 through which water is discharged.

The body 10 has a partition wall 20 that separates the first compartment 16 provided at the inlet 12 and the second compartment 18 provided at the outlet 14, and the partition 20 has an inlet. A communication hole 22 is provided through which a passageway is provided so that the water introduced into the first compartment 16 through 12 moves to the outlet 14 through the second compartment 18.

In addition, a disk 24 for opening and closing the communication hole 22 is provided, which provides a biasing force in different directions by the first deflection member 26 and the second deflection member 28. The first biasing member 26 is positioned toward the first compartment 16 to generate a biasing force in the direction of closing the disk 24, and the second biasing member 28 is the second compartment 18. Located on the side to generate a biasing force in the direction of opening the disk 24.

In addition, the first biasing member 26 and the second biasing member 28 preferably have an elastic coil spring having a predetermined elastic modulus, and the communication hole 22 is provided with a seat 30 so that the seat 30 May be configured to open / close the disk 24.

More specifically, the disk 24 is fixedly installed in the disk holder 32 disposed in the first compartment 16, the disk holder 32 provides a biasing force by the first biasing member 26. Receive. The disk 24 is connected to one end of the stem 34 disposed in the second compartment 18, and the other end of the stem 34 is deformed in the thickness direction under the pressure of the second compartment 18. It is connected to the diaphragm 36, which is capable of being provided with a biasing force by the second biasing member 28.

In addition, the second biasing member 28 is installed inside the spring case 38 mounted to the body 10, and the spring case 38 is adjusted to contract or expand the second biasing member 28. Screw 40 is installed.

The pressure reducing valve of the present invention is provided with bypass means for positioning the disk 24 away from the seat 30 so that the pressure check can be performed. Hereinafter, the configuration of the bypass unit will be described in detail.

The disk holder 32 is provided with a female screw portion 32a having a predetermined length along the moving direction of the disk holder 32, and the female screw portion 32a has a male screw portion formed at one end of the bypass stem 52. 52b is combinable.

The bypass stem 52 is installed to be rotatable to the cap 50 mounted to the body 10, the cap 50 is formed with a female screw portion (50a), the bypass stem (52) A male screw portion 52a coupled to the female screw portion 50a is formed.

In addition, the bypass stem 52 extends to protrude to the outside of the cap 50, the extended end is formed in a square so as to apply a rotational force with a tool such as a spanner.

The cap 50 is preferably mounted to the body 10 so as to be decomposable. A screen 17 is installed inside the first compartment 16 to filter and remove foreign substances contained in the water. do.

In addition, a union nipple 56 may be installed at the inlet 12 of the body 10 via a union nut 58.

The pressure reducing valve of the present invention has the second compartment 16, that is, the flow rate sound reduction member 90 fixedly installed at the low pressure side, and the flow rate sound reduction member 90 has an approximately cylindrical shape surrounding the stem 34, Preferably it is formed to have a cylindrical shape.

The flow rate sound reduction member 90 is formed with a plurality of radial discharge holes 92 formed through the radially.

Figure 4 is a schematic diagram showing a case in which the stop valve 60 is installed in the pressure reducing valve of the present invention, the stop valve 60 is the inlet 12 of the body 10 via the union nut 70 and the connector 80 Is connected to the

The union nut 70 is one side is connected to the stop valve 60 by screwing and the other side is freely connected to the connector (80). The connector 80 and the body 10 are connected by screwing. Thus, the free rotation of the stop valve 60 has a function capable of changing the direction in which water is introduced.

The operation of the present invention with the above configuration will be described.

The pressure reducing valve of the present invention is prepared in a bypass state capable of hydraulic check as shown in FIG. 2 before being installed in the pipeline.

This bypass state is possible by coupling the male thread portion 52b of the bypass stem 52 to the female thread portion 32a of the disk holder 32.

That is, after moving the disk holder 32 to the lower part of the drawing so as to contract the first deflection member 26, the male thread portion 52b of the bypass stem 52 is the female thread portion 32a of the disk holder 32. When coupled to the, the disk 24 fixed to the upper end of the disk holder 32 is also lowered to keep the seat 30 mounted in the communication hole 22 open.

In the above state, the pressure reducing valve is installed in the pipeline to check the pressure.

When the hydraulic pressure inspection is completed, when the bypass stem 52 is rotated using a tool such as a spanner, the male thread portion 52b formed at the upper end of the bypass stem 52 is the female thread portion 32a of the disk holder 32. The disk holder 32 of the pressure reducing valve is lifted by the expansion of the first biasing member 26 as shown in FIG.

Therefore, the disk 24 fixed to the disk holder 32 is in a state capable of performing a decompression function by the first deflection member 26 and the second deflection member 28.

That is, by adjusting the biasing force by the second biasing member 28 by rotating the adjusting screw 40, the disk 24 is maintained at an appropriate distance from the seat 30 as shown in FIG. When passing through the water, the water pressure is reduced to the set pressure and discharged.

More specifically, when the pressure of the water rises, the diaphragm 36 rises and the disk 24 also rises to decrease the amount of water passing through the seat 30, and when the water pressure falls, the diaphragm At the same time as 36 is lowered, the disk 24 is also lowered to increase the amount of water passing through the sheet 30, and the decompression action is normally performed.

At this time, when the high pressure side water present in the first compartment 16 flows through the sheet 30 to the second compartment 18 on the low pressure side, the water passing through the sheet 30 is a flow velocity reducing member ( Flowing toward the second compartment 18 through the discharge hole 92 formed radially in the 90, such a water flow (T ') is respectively radially long through the discharge hole 92 of the flow-rate sound reducing member 90 It has an extending shape and prevents the formation of vortices.

Therefore, the generation of the flow velocity sound formed by the vortex is prevented, and in particular, since the flow of water is not disturbed and the pressure loss hardly occurs, the flow rate is greatly increased as compared with the case where the flow velocity sound reduction member 90 is not installed. B. Dissatisfaction factors of consumers living in high-rise buildings are resolved.

As described above, according to the noise reduction type pressure reducing valve according to the present invention, the flow velocity sound is generated by the vortex by preventing the vortex from being formed at the low pressure side by the flow of water discharged radially through the discharge hole of the flow rate sound reducing member. This has an excellent effect of being prevented.

Moreover, the flow of water is greatly increased because the flow of water is not disturbed by vortices, which is very effective in resolving complaints of consumers living in apartments or high-rise buildings.

Claims (3)

In the pressure reducing valve having a body formed with a partition wall for separating the first compartment formed in the inlet and the second compartment formed in the outlet and the communication hole is opened and closed by a disk in the partition, A cylindrical sound velocity reduction member 90 having a plurality of discharge holes 92 formed radially to receive the water of the first compartment through the communication hole 22 and to be radially discharged into the second compartment. Noise reduction pressure reducing valve, characterized in that the fixed installation is located in the compartment (18). 2. The first and second deflecting members (26) and (28) of claim 1, which provide a biasing force to move the disk (24) in opposite directions. A diaphragm 36 interposed between the diaphragms 36 and deformed in the moving direction of the disc 24 by the pressure of water, and an adjusting screw 40 for adjusting the biasing force of the second biasing member 28, and the disc. Noise reduction type decompression, characterized in that it further comprises a bypass means for connecting the inlet 12 and the outlet 14 is installed so as to keep the 24 moving in the direction away from the communication hole 22 valve. 3. The bypass means according to claim 2, wherein said bypass means has a bypass stem (52) rotatably mounted to said body (10) and detachably coupled to said disk (24), wherein said disk (24) is a disk. It is fixed to the holder 32, the disk holder 32 is formed with a female threaded portion (32a), the bypass stem 52 has a male threaded portion (52b) coupled to the female threaded portion (32a) Noise reduction pressure reducing valve characterized in that.