JPH0960749A - Water-saving coma and flash valve using it - Google Patents

Abstract

(57) [Summary] [Object] An object of the present invention is to provide a water-saving piece and a flash valve using the same, which can be installed by a simple construction and can surely obtain a certain or more water-saving effect. To do. According to the present invention, a main body internally fitted over one or both of a pair of pipes connected by a union joint and having an orifice formed therein for communicating from an upstream side to a downstream side, and an outer peripheral surface of the main body. And an outer flange portion that is received by at least the end surface of the tubular body on the downstream side of the tubular body and the end surface of another tubular body connected to the tubular body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-saving piece and a flash valve using the same, and more particularly to a water-saving piece and a flash valve using the same, which can surely obtain a water saving effect above a certain level by simple construction. Is.

[0002]

2. Description of the Related Art Generally, in Japan, water supply facilities are highly developed, and high quality and inexpensive domestic water is supplied. However, even tap water requires various treatment costs in order to ensure water quality above a certain standard, and water cannot be supplied free of charge. In addition, in case of drought due to abnormal weather, it may not be possible to secure water for daily use. For this reason, it is preferable to try to save water on a daily basis, and various water saving methods have been proposed. An issue that is always raised in water saving is excessive use of water in the flush toilet, and various water-saving flush valves have been proposed in order to save water used in the flush toilet.

Conventionally, a flush valve is provided with a water stopcock in order to prevent water leakage when not in use, and the maximum opening degree of this water stopcock is adjusted with an opening / closing screw. The water pressure drops, and the flow time of water increases, so that the water saving effect cannot be realized.

[0004]

By the way, in general, the method of adjusting the water discharge amount by intuition by operating the water amount adjusting screw while observing the actual water discharge state by opening the water stopcock fully is performed. However, there is no guarantee that the amount of water will vary depending on the operator's adjustment, and that a certain level of water saving effect will be obtained.

In addition, since the adjustment by the adjusting screw of the water amount is performed by operating the adjusting screw while observing the actual water discharge state and adjusting the discharged water amount by the intuition, the adjustment requires experience. It was not something that the average person could do.

The present invention has been completed in view of the above technical problems, and can be easily installed by ordinary persons without relying on craftsmen, and moreover, a certain water saving effect is ensured. And a flash valve using the same.

[0007]

In order to achieve the above-mentioned object, a water-saving piece according to the present invention is internally fitted over one or both of a pair of pipes connected by a union joint, and is upstream inside. Side of at least the downstream side of the main body formed with an orifice communicating with the downstream side of the main body, and the end surface of another tubular body connected to the main body protruding from the outer peripheral surface of the main body. And an outer brim that is received on the end face.

Further, the flush valve according to the present invention is a flush valve having a union joint portion for connecting the valve case to the water supply pipe and / or a union joint portion for connecting the valve case to the water discharge pipe. as well as/
Alternatively, the water-saving piece according to the present invention is provided, which is connected to the water discharge pipe by a union joint and is incorporated in the union joint.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a water-saving piece according to the present invention will be described below. The material of the water-saving piece of the present invention is not particularly limited, but it is preferable to use a material that does not elute impurities in tap water, for example, brass, gun metal, stainless steel, plastic or the like is preferable.

Since the main body of the water-saving piece is internally fitted over one or both of the pair of pipes connected by the union joint, it must be formed to have a smaller diameter than these pipes. The formation of a gap between the outer peripheral surface of the main body is not hindered, and the outer shape may be formed into any shape such as a cylindrical shape, an elliptic cylindrical shape, or a rectangular cylindrical shape.

Both ends of the orifice formed in the main body may be opened at the end face of the main body or at the peripheral surface. Therefore, the flow path shape of the orifice is not limited to a straight line shape, and may be a U-shape, a V-shape, an L-shape, a L-shape, or a curved or curved shape. Of course, the number is not particularly limited, and the number of the water supply side and the number of the water discharge side may be different by branching or gathering in the middle, for example, T shape, arrow shape, Y shape, X shape. It is also possible to form an orifice having a flow path shape such as. It is also possible to form a plurality of concentric orifices inside and outside.

Further, the flow passage cross-sectional area of the orifice may be uniform, may be changed along the flow passage such as tapering, thickening, or hourglass shape, and a check valve may be incorporated in the orifice. Is. Since the orifice may be formed substantially in the main body, one side surface thereof may be opened to the outer peripheral surface of the main body over the entire length or a part thereof.

The flow passage cross-sectional area of this orifice is important in determining the water saving efficiency and is empirically designed.

The outer brim of the water-saving piece is provided to prevent the water-saving piece from moving to the downstream side or the water discharge side, and is provided between the pipe body and the end face of another pipe body connected to the pipe body. It suffices to project from the outer peripheral surface of the main body over the entire circumference or a part of the circumferential direction of the main body so as to be received by at least the end surface of the tubular body on the downstream side. That is, the inner diameter and / or the outer diameter of both pipes connected by the union joint may not necessarily be the same, and if the inner diameter of the upstream pipe is smaller than the inner diameter of the downstream pipe, The outer diameter of the flange portion may be smaller than the inner diameter of the upstream pipe body so that it can be received by the end face of the downstream pipe body.

However, the movement of the water-saving piece is eliminated,
In order to stabilize the water flow, it is preferable that the pipe is sandwiched between the end face of the pipe body and the end face of another pipe body opposite to the end face, and it is preferable that the whole outer circumference of the main body is projected. Of course, this outer collar needs to be accommodated in the union nut, so that its outer diameter is formed smaller than the outer diameter of both pipes and the inner diameter of the threaded portion of the union nut.

The outer flange is not particularly limited, but is preferably provided continuously over the entire circumference in order to reliably control the water saving efficiency, and between the both ends and the end faces of the tube bodies on both sides. It is preferable to interpose a packing made of rubber or the like.

Further, the outer flange portion may be provided so as to project from the outer peripheral surface of the main body, and may be formed in the middle of both end surfaces of the main body on the water supply side and the water discharge side, but the number of processing steps is reduced. In order to reduce the price, it is preferable to form the end portion on the water supply side or the water discharge side of the main body.

According to this water-saving piece, when connecting the pipes with the union joint, the main body is inserted over one pipe or both pipes, and the union nut is screwed into the union screw. Can be installed in Then, in the pipe incorporating the water-saving piece, the water supply side and the water discharge side are partitioned by the outer flange portion and the main body, and the water supplied to the water supply side passes through only the orifice and flows to the water discharge side. The amount of water is limited by the throttling action of the orifice, and the momentum of the water is increased, so that a certain water saving effect can be reliably obtained.

Next, the flash valve of the present invention will be described in detail. Generally, a flush valve is formed with a water supply port connecting a water supply pipe to a valve case and a water discharge port connecting a water discharge pipe, and a water supply pipe side piping component or a water discharge pipe side piping component is formed at the water supply port and the water discharge port. Union joints are provided for connection.

The union joint is formed with a union nut rotatably fitted to the end of one of the two pipes to be connected by abutting, and the union nut formed at the end of the one pipe. It is composed of a union collar that prevents the nut from coming off, and a union screw formed on the outer peripheral surface of the other tubular body.

The union joint portion in the present invention means the respective end portions connected to each other, and the union flange of one pipe body and a portion in the vicinity thereof, or the end face of the other pipe body and It may include a portion in the vicinity thereof, or both of the union flange of one pipe body and a portion in the vicinity thereof and an end face of the other pipe body and a portion in the vicinity thereof.

In the flush valve of the present invention, the water-saving top of the present invention is incorporated in the union joints on the water supply side and / or the water discharge side. In this case, the water supply side piping parts connected by the union joint and the flush The inner diameter and / or outer diameter of the water supply port of the valve, or the inner diameter and / or outer diameter of the drainage port of the flush valve and the piping part on the water discharge side are not necessarily the same, and the inner diameter of the water supply side is larger than the inner diameter of the water discharge side. If it is smaller, the outer diameter of the outer flange portion may be smaller than the inner diameter of the upstream pipe body so that it can be received by the end face of the water supply port of the flush valve on the downstream side or the pipe component on the water discharge side. Of.

According to the flash valve of the present invention,
By providing the water-saving piece of the present invention in one or both of the union joints, the amount of water flowing from the water supply side to the water discharge side is limited, and the momentum of the water increases, so that a certain water-saving effect is ensured. can get.

In the present invention, the union joint portion incorporating the water-saving top may be on the water supply side, the water discharge side, or both sides thereof, that is, the water supply side and the water discharge side, but it is incorporated on the water discharge side. In that case, the decrease in water pressure in the valve case of the flush valve becomes small, and the flush valve can be closed in a short time, which is advantageous because the water saving effect can be further enhanced.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A water-saving top and a flash valve using the same according to an embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view of a flush valve according to an embodiment of the present invention. The flush valve 1 is for a toilet bowl, and a main valve 3 and a pilot valve 4 are provided in a valve case 2. And the stem 5 connected to the pilot valve 4 are housed, and the handle 6 supported swingably on the lateral side portion of the valve case 2 is swung from the neutral position to open the pilot valve 4. The main valve 3 is opened by the pressure difference between the water supply side and the water discharge side of the main valve 3 so that water flows from the water supply side to the water discharge side.

When the water flows to the water discharge side to some extent, the differential pressure acting on the main valve 3 becomes small, and the main valve 3 is closed.
The pilot valve 4 is closed by releasing the handle 6 at any time. Therefore, even after the main valve 3 is closed,
When the user pushes down the handle 6 for example, water flows through the pilot valve 4 to the water discharge side at the minimum flow rate.

The maximum opening of the pilot valve 4 can be adjusted by an adjusting screw 9 screwed onto the upper lid 8 of the valve case 2.

The water supply side of the valve case 2 is connected to a water stopcock 11 by a union joint 10. The union joint 1
A water-saving piece 12 is incorporated in 0.

As shown in the sectional view of FIG. 1, the side view of FIG. 2 and the perspective view of FIG. 3, this water-saving piece 12 has a union joint portion 14 of the valve case 2 in which a union collar 13 of the union joint 10 is formed. The main body 15 fitted inside the main body 15 and the main body 15
And an outer flange portion 16 projecting from the end on the water supply side over the entire circumference, and two linear orifices 17 having a uniform flow passage cross-sectional area are formed in the main body 15. A water supply side and a water discharge side are communicated with each other by 17.

In this embodiment, the inner diameter of the union joint portion 18 at the end of the water stopcock 11 is formed to be larger than the inner diameter of the union joint portion 14 of the valve case 2, and the outer collar portion 1 is formed.
6 is formed with a diameter smaller than the inner diameter of the union joint portion 18 at the end portion of the water stopcock 11, but is pressed against the end surface of the union joint portion 14 of the valve case 2 by the supply water pressure, whereby the water-saving piece 12 is It is arranged so as not to move into the valve case 2.

The union joint 1 of the valve case 2
4 is formed of a tube body screwed into the main body of the valve case 2 so as to be able to advance and retract, but there is no problem in forming the union joint portion 14 integrally with the main body of the valve case 2. Further, in FIG. 1, reference numeral 20 is a water supply pipe, 21 is a vacuum breaker, 22 is a water discharge pipe, 27 is packing for preventing water leakage from the handle mounting portion, 28 is packing for preventing water leakage from the water discharge pipe 22, Are shown respectively.

In the flush valve 1, when the user operates the handle 6 to flow water from the water supply side to the water discharge side, the water amount is surely limited to a certain level or less by the water-saving piece 12, and a large amount of water saving is achieved. Be seen. Also, the orifice 17
The main valve 3 and pilot valve 4 in the valve case 2
As compared with the above, the static pressure increase on the water supply side is suppressed, the differential pressure acting on the main valve 3 is reduced within a short time after the valve is opened, and the main valve 3 is closed within a short time. As a result, the flow rate restriction and the shortening of the valve opening time act synergistically to further save water. Specifically, for example, when the water amount of 11 liters was flowing when the water saving piece 12 was not used, the water amount could be reduced to 8.3 liters by using the water saving piece 12.

In the above embodiment, the water-saving piece 12 is provided on the water supply side of the main valve 3 and the pilot valve 4, but instead of this, for example, as shown in FIG. You may arrange | position on the water discharge side rather than the valve.

In this case, the water pressure of the main valve 3 and the pilot valve 4 on the water discharge side increases due to the throttling action of the water-saving piece 12.
The opening time of the main valve 3 is shortened. Therefore, similarly to the case where the water-saving piece 12 is provided on the water supply side of the main valve 3 and the pilot valve 4, the flow rate limitation by the orifice 17 and the shortening of the valve opening time of the main valve 3 act synergistically to significantly increase. The water saving effect is obtained.

In FIG. 4, 23 is the union joint on the water discharge side, 24 is the union collar formed on the union joint of the water discharge pipe 22, 25 is the union screw formed on the union joint of the valve case 22, and 26 is It is a union nut.

In the figure, 27 is a packing for preventing leakage of the handle mounting portion, and 28 is a packing for preventing water leakage between the water discharge pipe 22 and the water-saving piece 12.

A flush valve 31 according to another embodiment of the present invention shown in FIG. 5 is for a urinal, and has a valve case 32 in which a main valve 33, a pilot valve 34, and the pilot valve 34 are connected. And a push button 36 that is housed in the stem 35 and is supported on the front surface of the valve case 32 so as to be movable back and forth.
The pilot valve 34 is opened by pushing in, and the main valve 33 is opened by the pressure difference between the water supply side and the water discharge side of the main valve 33 so that water flows from the water supply side to the water discharge side. .

When a certain amount of water flows to the water discharge side, the pressure difference acting on the main valve 33 becomes small, the main valve 33 is closed, and the pilot valve 34 is closed by releasing the push button 36 at any time. . Therefore, even if the main valve 33 is closed, if the user continues to press the push button 36, the water flows through the pilot valve 34 to the water discharge side at the minimum flow rate.

The minimum flow rate can be adjusted by adjusting the maximum opening of the pilot valve 34 with the adjusting screw 39 screwed to the upper lid 38 of the valve case 2.

The drain side of the valve case 32 has a union joint 40.
The water-saving piece 12 is incorporated in the union joint 40.

As shown in FIG. 5, the water-saving piece 12 is
A main body 15 fitted in a union joint portion 44 of a water discharge pipe 41 in which a union collar 43 of the union joint 40 is formed;
The main body 15 has an outer flange portion 16 projecting from the water supply side end portion over the entire circumference, and two linear orifices 17 having a uniform flow passage cross-sectional area are formed in the main body 15. The orifice 17 connects the water supply side and the water discharge side.

The outer flange portion 16 has a union joint portion 44 at the end of the water discharge pipe 41 and a union joint portion 4 of the valve case 2.
4, the union joint part 4 of this water discharge pipe 41 is sandwiched between
The union nut 49, which is rotatably fitted to the outer circumference of the valve 4, is screwed into the union screw formed on the union joint portion 44 of the valve case 2 so as to be fixed in the union joint 40.

In the flush valve 31, when the user operates the push button 36 to flow water from the water supply side to the water discharge side, the amount of water is surely limited to a certain level or less by the water-saving piece 42, and the orifice Since the internal pressure of the valve case 32 is kept high by the throttling action of 17, and the closing timing of the main valve 33 is advanced, the flow rate restriction and the shortening of the valve opening time act synergistically to further save water. .

In FIG. 5, reference numeral 46 is a packing for preventing water leakage from the push button assembly portion, and 47 is a packing for preventing water leakage from the union joint portion 40.

In each of the above embodiments, the number of the orifices 17 of the water-saving piece 12 is two, but instead of this, for example, as shown in FIGS. 6 and 7, four linear orifices 47 are used.
Water-saving piece 42 having a
A water-saving piece 52 having two linear orifices 57, and FIG.
0 and a water-saving piece 62 having a branch type orifice 67 having a branch portion 67b obtained by branching one trunk portion 67a at right angles in four directions from its tip, as shown in FIG.
And, as shown in FIG. 13, one trunk 77a and a branch 77b folded back from the tip of the trunk 77a in a direction sandwiching at an acute angle in all directions.
A water-saving piece 72 having an inverted branch type orifice 77 having a double orifice 87a shown in FIGS. 14 and 15.
A water saving piece 82 having 87b or a water saving piece 92 having an orifice 97 with a check valve 90 and a valve closing spring 91 interposed therebetween may be used as shown in FIGS. 16 and 17.

[0047]

As described above, the water-saving piece of the present invention can be installed in the pipe by a simple construction of incorporating it in the union joint when connecting the pipes with the union joint. Then, in the pipe incorporating this water-saving piece, the water supply side and the water discharge side are partitioned by the outer collar portion and the main body, and the water flows from the water supply side only through the orifice to the water discharge side. Being limited and increasing the momentum of the water ensures a certain water saving effect.

According to the flash valve of the present invention,
A union joint for connecting the valve case and its water supply side pipe and a union joint for connecting the valve case and its water discharge side pipe, or by providing the water-saving piece of the present invention on one of these, from the water supply side to the water discharge side Since the amount of flowing water is limited, a certain amount of water saving effect is surely obtained.

In the present invention, especially when the water-saving piece is incorporated in the union joint on the water discharge side, the water pressure drop in the valve case of the flush valve becomes small and the flush valve can be closed in a short time. The water saving effect can be further enhanced.

[Brief description of drawings]

1 is a cross-sectional view of the present invention.

FIG. 2 is a side view including a cross-sectional portion of the present invention.

FIG. 3 is a perspective view of the present invention.

FIG. 4 is a sectional view of the present invention.

FIG. 5 is a sectional view of the present invention.

FIG. 6 is a side view including a cross-sectional portion of the present invention.

FIG. 7 is a perspective view of the present invention.

FIG. 8 is a side view including a cross-sectional portion of the present invention.

FIG. 9 is a perspective view of the present invention.

FIG. 10 is a side view including a cross-sectional portion of the present invention.

FIG. 11 is a perspective view of the present invention.

FIG. 12 is a side view including a cross-sectional portion of the present invention.

FIG. 13 is a perspective view of the present invention.

FIG. 14 is a side view including a cross-sectional portion of the present invention.

FIG. 15 is a perspective view of the present invention.

FIG. 16 is a side view including a cross-sectional portion of the present invention.

FIG. 17 is a perspective view of the present invention.

[Explanation of symbols]

 2 Valve case 10 Union joint 11 Water stop valve 12 Water saving piece 14 Union joint part 15 Main body 16 Outer collar part 17 Orifice 18 Union joint part

Claims (3)

[Claims] 1. A main body internally fitted over one or both of a pair of pipes connected by a union joint, and having an orifice formed therein for communicating from the upstream side to the downstream side,
An outer flange portion projectingly provided on the outer peripheral surface of the main body, the outer flange portion being received by at least the end face of the pipe body on the downstream side of the pipe body and the end face of another pipe body connected to the pipe body. Water saving coma. 2. A flush valve having a union joint part for connecting the valve case to the water supply pipe and / or a union joint part for connecting the valve case to the water discharge pipe, wherein the union joint part is connected to the water supply pipe and / or the water discharge pipe. A flush valve, comprising: the water-saving piece according to claim 1, wherein the flush valve is incorporated in the union joint, which is connected by the above. 3. The flush valve according to claim 2, wherein the water-saving piece is provided in the union joint on the water discharge side of the valve case.