JPS5853356Y2 - Water saving flush valve - Google Patents

Description

[Detailed description of the invention] This invention relates to a water-saving flush valve that obtains a constant amount of water for toilet flushing regardless of the cleaning operation time of the operating bundle, and its purpose is to be able to adjust the amount of water discharged. Our objective is to provide a water-saving flush valve that is highly effective.

As shown in FIG. 1, the conventional general flush valve A adjusts the amount of water discharged by adjusting the lifting distance of the valve element 3 using a lifting distance adjustment screw 4 provided on the cover 2 above the valve chamber 1. Adjustments were made so that the minimum necessary amount of washing water flowed out.

According to this method, it was possible to adjust the minimum amount of cleaning water required, but depending on the operating time of the bundle 5, that is, if the bundle 5 was kept pressed, the tip of the push rod 6 could become inside the valve body 3. Since the frame part 8 hanging down from the sub-valve body 7 provided in the valve body for starting the valve body continues to be pressed, the valve body 3 does not sit on the valve seat 3' of the valve body 3, and the cleaning water continues to flow out, causing a large amount of water to flow out. This will result in wasted water flowing out.

Therefore, although this method is effective when cleaning is performed by operating the bundle once, no water-saving effect can be obtained when the bundle 5 is continuously pressed.

In other words, the disadvantage is that the amount of washing water varies depending on the operating time of the bundle 5.

In order to overcome the drawbacks of this system, as shown in FIG. A water-saving type flush valve is constructed in which the lower part 8'' of the frame is slid along the upper part 8' of the rod, and the overall length of the frame part 8 changes in length. be.

In the case of this water-saving flush valve, the frame part 8 is set to a length such that the lower end of the frame part 8 is located above the upper surface of the push rod 6 when the valve body 3 is raised, and the bundle 5 is kept pressed. However, since the lower end of the frame portion 8 is positioned on the push rod 6, the sub-valve body 7 is seated on the valve seat 3', and the water flowing into the valve body upper chamber 15 from the small hole 9 further pushes down the valve body 3. The power of works.

At this time, even when the lower end of the frame part 8 is located on the push rod 6, the bundle 5 can be pressed and pressed even if the lower end of the frame part 8 is located on the push rod 6. Since the rod upper part 8' and the frame lower part 8'' are loosely fitted to each other so as to be able to move up and down, the rod upper part There is no problem in lowering the valve body 8', and the valve body 3 is seated on the valve seat 3' even when the bundle 5 is pressed and released as shown in FIG.

Since this system can supply a constant amount of washing water regardless of the operating time of the bundle 5, it has a great water saving effect in that it prevents wasted water from flowing out due to continuous pushing of the bundle 5.

However, the amount of flushing water required for the toilet bowl to be used varies greatly depending on the model, and when considering the effective use of water and water conservation, the amount of flushing water required for the toilet bowl and the amount of water discharged by the water-saving flush valve vary greatly. However, as mentioned above, the water-saving type flush valve is arranged so that the lower end of the frame part 8 is located on the upper surface of the push rod 6, and the lifting distance of the valve body 3 is determined by this frame part. This is naturally determined by the length of 8.

Further, since the amount of water discharged from the flush valve is also determined by the lifting distance of the valve body 3, only a preset amount of water can be supplied.

As mentioned above, the water-saving flush valve, which eliminates the wasteful outflow of water caused by continuous pressing, has had a great effect;
The amount of flushing water required varies depending on the toilet model, so
Even when used with any type of toilet, in order to avoid the problem of poor flushing, it is necessary to set the model to one that requires the maximum amount of flushing water, so it cannot be called a perfect water-saving flush valve. .

In addition, even in water-saving flush valves, variation in the amount of flushing water due to dimensional errors is considered a water-saving problem, and even if manufacturing and processing precision is improved, the lifting distance of the valve body is 1 mm
Variations occur due to the front and rear dimensions, which directly leads to variations in the amount of water discharged.

For example, in the case of a valve body in which the diameter of the small hole 9 formed on the side surface of the valve body 8 is Q and 7 mm, if the lifting distance of the valve body 3 differs by 1 mm, the amount of water discharged will differ by about 21 points.

Therefore, in order to save water, it has been considered impossible to adjust the amount of water discharged from the flush valve due to the structure of the water-saving type flush valve.

The present invention has been devised in view of the above points, and an object of the present invention is to make it possible to adjust the amount of water discharged in a water-saving flush valve.

An example of implementation will be described below with reference to the drawings. The primary side water passage 10 of the flush valve B of the present invention is connected to a water supply pipe (not shown) via a check valve (not shown) integrally configured with the flush valve B. The secondary water passage 11 is connected to a toilet flushing pipe (not shown), and a case part 13 constituting the valve body 12 has a small hole 9 passing through the side surface thereof. A strainer 14 is provided around the outer periphery of the case part 13, and a sealing member 16 provided for the purpose of improving the sealing performance of the valve body upper chamber 15 is fitted and fixed to the outer peripheral edge of the upper end of the case part 13 by a pressing member 17. has been done.

Reference numeral 18 denotes a seal that maintains watertightness between the valve body 12 and the corresponding valve seat 12', and is fitted and fixed to the bottom surface of the valve body 12 by a guide 19.

Reference numeral 20 denotes a gasket that constitutes a valve seat 21' corresponding to the sub-valve body 21 provided in the valve body 12, and is fitted and fixed onto the bottom surface of the internal cavity 23 of the case portion 13 by a gasket retainer 22. There is.

The above points are similar to conventional water-saving flush valves.

The sub-valve body 21 is elastically fixed to the upper surface of the packing 20 by a spring 24, and includes a sub-valve main body 27 in which a valve portion 25 is formed downward on the outer periphery and has a central through-hole 26, and the above-mentioned through-hole of the sub-valve main body 27. 26, and a frame portion 28 which is screwed into the rod upper portion 28' in a vertically movable manner, as in the conventional case.
and frame lower part 28'', these frame parts 2B', 2B
`` is formed of a rod body and a tube body so as to be able to slide, and these are locked by locking step portions 29 and 29' to prevent removal.

Further, a driver groove 30 is formed in the head of the rod upper part 28', and in order to obtain watertightness between the sub-valve main body 27 and the frame 28, the outer periphery of the frame 28 or the central through-hole 2 of the sub-valve main body 27 is
An O-ring fitting groove 31 is formed on the inner periphery of 6, and an O-ring 32 is interposed therebetween.

In this embodiment, the rod upper part 28' is formed as two pieces, but it may be formed as one piece depending on the size of the minimum diameter of the frame lower part 28'' and the maximum diameter of the rod upper part 28'. is determined.

Hole 17 for fitting a driver into the driver groove 30
By providing this in the middle of the holding member 17, the vertical relative position of the frame 28 can be adjusted by simply removing the cover 2 of the flush valve B without disassembling the valve body 12. However, the hole 17' is different from the conventional valve body 12.
A hole for activating the toilet may be formed in the center to function as both, and the driver groove 30 may also be installed after disassembling and adjusting the valve body 12 for the toilet model etc. at the installation site. It's unnecessary.

Next, the operating mechanism of the water-saving flush valve according to the present invention will be explained. As shown in FIG. 3, by pushing down the handle 5, the push rod 6 moves forward, and
1 is tilted when the frame portion 28 is pushed by the push rod 6, thereby releasing the sub-valve.

At this time, the water in the valve body upper chamber 15 flows out to the secondary side passageway 11, the pressure in the valve body upper chamber 15 decreases, and the pressure balance between the valve body 12 and the primary side passageway 10 is lost, so the valve body 12
rises inside the valve chamber 1.

During this rise, the relative length of the frame portion 28 is
By adjusting the degree of screw engagement with the push rod 6, the amount of rise until the lower end of the lower frame 28'' is positioned on the upper surface of the push rod 6 can be adjusted, and the amount of outflow can be adjusted.

As explained above, like the conventional water-saving flush valve, this invention not only prevents excess flushing water from flowing out due to continuous pressing of the bundle, but also has a structure in which the frame part can move up and down through the central through-hole of the sub-valve body. However, since the valve body lift distance when the bundle is activated can be adjusted, the amount of water discharged can be adjusted to supply the minimum amount of flushing water to the target toilet regardless of the type of toilet or the product accuracy of the flush valve. This is an idea that is extremely easy to implement and has great water-saving effects.

[Brief explanation of drawings]

Figures 1 and 2 show conventional examples; Figure 1 is an end view of a general flush valve, Figure 2 is a sectional view of the sub-valve body of a water-saving flush valve, and Figures 3 to 5 are Fig. 3 is a cross-sectional view showing an example of the start of operation of the flush valve, Fig. 4 is a half-sectional view of the valve body, and Fig. 5 is a diagram showing an embodiment of the present invention when water is stopped when the bundle is continuously pressed. FIG. B...Flash valve, 1...Valve chamber, 5...Bundle, 12...Valve body, 2
1...Sub-valve body, 26...Center through hole,
27... Sub-valve body, 28... Frame.

Claims (1)

[Scope of utility model registration request] The sub-valve body provided in the valve body is tilted by a bundle operation so that when the valve body is activated and the valve body rises within the valve chamber, the lower end of the frame of the sub-valve body is positioned on the push rod. In the water-saving flush valve, the double structure of the frame prevents unnecessary water from flowing out due to continued pushing of the bundle. A water-saving flush valve characterized in that a frame portion is screwed into the central through hole of the sub-valve main body so that the frame portion can move vertically.