KR20150005294A - Reduction valve for water flow meter with Opening and shutting valve - Google Patents

Abstract

The present invention relates to a pressure reducing valve for a water flow meter integrated with an opening and shutting valve. Specifically, a pressure reducing valve assembly is integrally formed with the opening land shutting valve which is formed in a simple structure at the rear of the pressure reducing valve to be connected and installed in the front of the water flow meter. The opening and shutting valve comprises a main body of the opening and shutting valve formed integrally with the pressure reducing valve, a swing check valve for preventing a back flow, and an opening and closing bolt for opening and shutting the check valve depending on a user demand in details. The present invention is to prevent the back flow of tap water, supply the tap water at desired pressure, simplify a structure of the water reducing valve assembly, reduce a volume of the water reducing valve assembly, and reduce manufacturing costs.

Description

[0001] The present invention relates to a reduction valve for a water meter integrated with an open / close valve,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure reducing valve for a water meter integrated with an on-off valve, and more particularly, to a pressure reducing valve for a water meter, The swing type check valve for preventing back flow and the opening / closing bolt for opening / closing the check valve as desired by the user are formed by the opening / closing valve body formed integrally with the pressure reducing valve body, Thereby preventing the backflow of tap water and allowing the user to freely open and close the flow path as desired. The structure of the water pressure reducing valve assembly is simplified, the volume is reduced, and the manufacturing cost is reduced.

In general, the supply process of tap water is as follows. An angle valve is installed before the water meter to supply and block tap water from the supply side of tap water supplied to each household, and the other side is connected from one side of the angle valve. It is installed and passes tap water of constant pressure to protect the water meter and to supply stable flow rate.

The connection of the angle valve and the pressure reducing valve installed as described above is as follows.

The connection female thread side of the angle valve side is screwed to the threaded portion of the water supply monitoring thread and the connection of the pressure reducing valve to the angle valve is connected by using a separate joint body and the discharge side of the pressure reducing valve is also connected to the water meter It is threaded using a joint tube.

Accordingly, since the angle valve, the pressure reducing valve, and the water meter are connected by the respective joint tubes, there is a problem that the space inside the water meter is larger than necessary.

Especially, the weighing box installed in each home of the apartment has a narrow space, so that it is not efficient to install and separate the angle valve and the pressure reducing valve during the initial installation or replacement of the above-mentioned angle valve, In the production of the valve, the parts forming each body are required to be manufactured as separate molds, which raises production costs.

Therefore, in the related art, development has been made to solve the above-mentioned conventional problems, and the invention of the thus-developed Patent No. 10-0718075 is known from the patent publication.

In the above-mentioned conventional invention (Patent Registration No. 10-0718075), a body capable of installing the components of the angle valve is integrally provided in the pressure reducing valve body connected to the water meter, so that the cost of the mold And the connection of the angle valve from the water supply pipe is simplified, so that a favorable installation is made from the narrow space where the water meter is installed.

However, the above-mentioned prior art has a problem that the manufacturing cost is increased due to the fact that an angle valve having a complicated structure is installed in the pressure reducing valve and that the angle valve itself has a predetermined size, There is a problem.

As described above, since the water meter including the conventional invention occupies a large amount of the internal space of the water metering chamber, the space for inserting the insulating material for preventing freezing of the water meter in the winter season is reduced.

Patent Registration No. 10-0718075 (entitled "Water-Angle Integrated Pressure Reducing Valve")

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a water pressure reducing valve assembly for a water service system, which is constructed such that an open / close valve having a simple structure is integrally formed behind a pressure reducing valve, And to prevent the backwash of tap water, and to open and close the oil passage as desired by the user, and to simplify the structure of the water reducing valve assembly, reduce the volume, and reduce the manufacturing cost.

In order to achieve the above object, the present invention is characterized in that a pressure reducing valve is connected to an inlet port of a water meter, wherein an opening / closing valve is integrally connected to an outlet port of the pressure reducing valve, Closing valve body formed integrally therewith and having a water inlet formed at a boundary between an outlet port and an internal space of the opening and closing valve body and having an internal threaded portion formed at an upper portion and a rearward portion of the valve body, A check valve having a hinge formed on the upper side of the check valve body and hinged behind the water inlet of the opening and closing valve body so as to protrude from the rear surface of the check valve body, And the lower end of the threaded portion that is threadedly engaged with the female threaded tube portion is threadedly engaged with the female threaded tube portion on the upper side of the valve body It characterized in that the push protrusion to press the central ramps comprising a closing bolt which is downwardly formed.

As described above, according to the present invention, the pressure reducing valve for a metering device with a built-in valve of the present invention is constructed such that a simple structure of an opening / closing valve having a simple structure is integrally formed behind the pressure reducing valve, It is possible to open and close the flow path as desired by the user, to simplify the structure of the water reducing valve assembly, to reduce the volume, and to reduce the manufacturing cost It is possible to have effect such as.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a sectional view showing a pressure reducing valve assembly according to the present invention. Fig.
Fig. 2 is an enlarged cross-sectional view of the main part of the present invention shown in Fig. 1; Fig.
3 is a use state diagram of the present invention.

Hereinafter, a pressure reducing valve for a water meter integrated with a shutoff valve according to the present invention will be described with reference to FIGS. 1 to 3 attached hereto.

The pressure reducing valve for a water meter integrated with an on-off valve according to the present invention is provided with a pressure reducing valve 10 connected to the inlet port side of the water meter 50 and is provided with an on / off valve (not shown) on the discharge port 12 side of the known pressure reducing valve 10 30 are integrally connected to each other and an open / close valve 30 is integrally connected to a discharge port 12 side of a known pressure reducing valve 10 is also referred to as a pressure reducing valve assembly 100 for a water service.

The present invention shown in Fig. 1 is also applicable to a known pressure reducing valve in which a diaphragm or a bellows is provided on the upper side of a secondary side of a pressure reducing valve, which is integrally connected to a direct-acting type pressure reducing valve as an essential part of the present invention Is possible.

That is, the pressure reducing valve 10, which has been known before to explain the pressure gauge for a water meter integrated with an on-off valve according to the present invention, will be described first. The known pressure reducing valve 10, as shown in FIGS. 1 to 3 The water passage 14 of the pressure reducing valve body 13 having the inlet 11 and the outlet 12 and having the water passage 14 in the vertical direction in the internal space between the inlet 11 and the outlet 12 The lower opening / closing portion 16 is provided with a rising / falling opening 17 for opening / closing the lower portion of the water passage 14 so as to be able to ascend / descend.

A tightening cover 15 is screwed on the inner side of the upper portion of the water passage 14 of the pressure reducing valve body 13 so that the adjusting screw 18 is screwed up and down. A primary spring 19 is elastically provided between the upper surface of the opening / closing port 17 and the bottom surface of the adjusting screw 18.

A lower coupling hole 20 having a drain hole 21 is threadedly coupled to an open lower portion of the pressure reducing valve body 13. A drain hole 21 is formed in a lower portion of the lower coupling hole 20, A secondary spring 23 is provided between the lower surface of the lower opening and closing part 16 and the upper surface of the lower fastening opening 20 corresponding to the lower surface of the lower opening and closing part 16, Is resiliently installed.

The opening / closing valve 30 serving as a main part of the present invention is integrally provided on the rear outlet 12 side of the known pressure reducing valve 10 described above. The opening / closing valve 30 is connected to the rear outlet port 12 of the pressure reducing valve body 13, Closing valve main body 33 integrally formed with the valve body 12 and a check valve 40 installed at the top of the valve body 33 so as to be hinged at the top, And an opening / closing bolt 41 which is screwed to the check valve 40 to open and close the check valve 40.

The open / close valve body 33 is formed integrally with the discharge port 12 and the inner space. A water inlet 34 is formed at a boundary between the discharge port 12 and the inner space of the open / close valve body 33, The upper threaded tubular portion 31 is closed and the check valve 40 is pushed in the upper threaded tubular portion 31 so that the discharge port 12 is closed. Closing bolt 41 for opening and closing the water inlet 34 communicating with the water meter 34 is screwed and screwed to the inlet port of the water meter 50 in the rear side female screw tube 32. [

The check valve 40 is hingedly provided on the inner space of the opening and closing valve body 33 to hinge the upper end hinge portion 37 to hinge the check valve body 36 The hinge portion 37 formed on the upper side of the check valve main body 36 is hingedly provided on the upper side of the rear side of the water supply port 34 on the inside of the opening and closing valve body 33 and the inclined portion 38 is formed on the rear surface of the check valve body 36, And the base is protruded toward the rear side.

At this time, on the front surface of the check valve body 36, a packing 39 for opening and closing the rear of the water inlet 34 is provided. The packing 39 is preferably made of a rubber material or a soft synthetic resin material.

The opening and closing bolt 41 is screwed on the female threaded tube portion 31 on the upper side of the opening and closing valve body 33 so that the threaded portion 42 threadedly engaged with the female threaded tube portion 31 is inclined The pushing projection 43 for pressing the pushing portion 38 is formed in an inverted conical shape or a pin shape having a truncated cone shape or a hemispherical shape in the upper side and the head portion on the upper side of the screw portion 42 is formed with an opening / It is preferably formed in a hexagonal shape that can be turned by a spanner or a wrench.

Reference numeral 35 in the reference numerals denotes a valve seat to which the packing 39 provided on the front surface of the check valve 40 is closely attached and 15a denotes an upper stopper screwed to cover the upper portion of the tightening cover 15 .

The operation of the present invention will be described with reference to FIGS. 1 to 3. FIG.

The pressure reducing valve for a water meter with integral valve according to the present invention, which is also referred to as a water reducing valve assembly 100, is installed inside a water metering chamber (not shown) And the inlet port of the water meter 50 is connected to the female threaded tube portion 32 of the opening / closing valve 30.

In the case where tap water is normally used in a state where the present invention is installed between the water supply pipe 101 and the water meter 50 in the metering chamber as described above, the opening / closing bolt 41 is moved upward as shown in FIG. 2 , The check valve 40 should be able to be lifted upwards.

Closing bolt 41 is lifted upwards and then the locking nut 44 is fastened to the threaded portion 42 exposed on the upper side of the female threaded tube portion 31 to prevent the opening and closing bolt 41 from being loosened desirable.

As shown in FIG. 1, according to the water pressure supplied to the home in which the present invention is installed, the adjusting screw 18 inside the fastening cover 15 is loosened or tightened to the pressure reducing valve 10, The compression force of the first and second springs 19 and 23 is adjusted as the adjustment screw 18 is lifted and lowered, and the pressure is adjusted to the hydraulic pressure supplied to the home.

The tap water flowing into the inlet 11 of the decompression valve 10 through the water supply pipe 101 passes through the water passage 34 formed at the inlet of the opening and closing valve body 33 via the water passage 14 and the discharge port 12, The check valve 40 with the upper hinge portion 37 hinged by the water pressure flowing into the water inlet 34 is lifted up as shown in FIG. 2, and the tap water flows into the opening / closing valve body 33 And then flows into the water meter 50 to supply tap water into the home.

When the supply of tap water to the inlet 11 of the pressure reducing valve 10 is shut off while the tap water is used, the tap water after the water meter 50 or the water tank has flowed into the pressure reducing valve 10 through the channel, However, at this time, the check valve 40, which is hingedly installed in the inner space of the opening / closing valve 30, is closed to block the backflow of tap water.

1 and 2, since the hinge portion 37 formed on the upper side of the check valve body 36 is hingedly installed on the check valve body 36, the check valve body 40 And the water contained in the pipeline pushes the rear surface of the check valve body 36 to seal the front side packing 39 of the check valve body 36, This prevents the backflow of tap water by blocking the water supply port (34).

In the case of using the present invention as described above, when it is desired to perform an operation such as replacing a water supply valve in a home, tap water should be prevented from flowing into a duct in a house through a water meter 50. In this case, So that the valve 40 blocks the water supply port 34.

Closing bolt 41 is unlocked by unlocking the lock nut 44 fastened to the threaded portion 42 of the opening and closing bolt 41 so that the opening and closing bolt 41 is screwed down by the female threaded tube portion 31. When the opening and closing bolt 41 is screwed down and descends, the bolt 41 is lowered downward together with the push projection 43 formed downward at the lower end thereof.

The push projection 43 on the lower side of the downwardly opening and closing bolt 41 comes into contact with the inclined portion 38 formed to protrude in the form of a right triangle on the rear side of the check valve body 36. At this time, as the pushing projection 43 descends, the pushing projection 43 pushes the slanting portion 38 downward. When the check valve 40 is hinged on the upper hinging portion 37, The inclined portion 38 is formed to protrude in the shape of a right triangle in the rear of the valve seat 36 so that the check valve 40 is pushed toward the water inlet 34 side.

A packing 39 made of a rubber material or a soft synthetic resin material is provided on the front surface of the check valve body 36 of the check valve 40 pushed toward the water supply port 34. The pushing protrusion 43 presses the packing 39 The check valve 40 completely closes the water supply port 34 and the tap water is supplied to the water meter 50 side without completely blocking the water supply port 34 and unlocking the opening and closing bolt 41 upward. It will not flow.

Closing bolt 41 is completely closed by the locking of the opening and closing bolt 41, the work such as replacing the water valve in the home can be safely performed. After completion of the above operation, As shown in Fig. 2, so that tap water is normally used.

In the present invention as described above, the opening / closing valve 30 having a very simple structure is integrally provided at the rear of the known pressure reducing valve 10, a check valve 40 is provided inside the opening / closing valve 30 By opening and closing the check valve 40 as the opening and closing bolt 41, tap water can be supplied with a stable water pressure, reverse flow can be blocked, and the inflow of tap water can be easily blocked as needed.

In the following description of the present invention, the detailed description of the operation of the pressure reducing valve 10 is omitted, because the pressure reducing valve 10 is known in the art. .

10: Reducing valve 11: Inlet 12: Outlet
13: pressure reducing valve body 14: water passage 15: fastening cover
16: lower opening / closing part 17: rising / falling opening 18: adjusting screw
19: primary spring 20: lower fastener 21: drain hole
22: lower stopper 23: secondary spring 30: opening / closing valve
31: female thread tube portion 32: female thread tube portion 33: opening / closing valve body
34: Water tap 35: Valve seat 36: Check valve body
37: hinge part 38: inclined part 39: packing
40: check valve 41: opening / closing bolt 42:
43: push projection 44: lock nut 50: water meter

Claims (2)

In the case where the pressure reducing valve 10 is connected to the inlet port side of the water meter 50,
An opening / closing valve (30) is integrally connected to an outlet (12) of the pressure reducing valve (10)
The opening and closing valve 30 is formed integrally with the discharge port 12 and the inner space and has a water inlet port 34 at a boundary between the discharge port 12 and the inner space of the opening and closing valve body 33, Closing valve body 33 in which the female threaded portions 31 and 32 are formed,
The hinge portion 37 formed on the upper side of the check valve body 36 can be opened and closed by hingingly opening and closing the water inlet port 34 in the rear of the discharge port 12 by being hingedly installed inside the opening / closing valve body 33, A check valve 40 hingedly installed behind the water inlet 34 inside the valve body 33 and formed with an inclined portion 38 protruding from the rear surface of the check valve body 36,
A pushing projection 38 for pressing the inclined portion 38 at the center of the lower end of the threaded portion 42 threadedly engaged with the female threaded tube portion 31 by being screwed on the female threaded tube portion 31 on the upper side of the opening / And an opening / closing bolt (41) in which the opening / closing valve (43) is formed downward. 2. The pressure-reducing valve according to claim 1, wherein a packing (39) for opening and closing the rear of the water inlet (34) is provided on the front surface of the check valve body (36).

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