JP2011074686A - Drain valve device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain valve device capable of easily making fine adjustments of a washing-water volume discharged from a washing water tank to a flush toilet bowl. <P>SOLUTION: The drain valve device 10 includes: a drain valve body 13 having a substantially cylindrical valve seat 11 attached to a drain port formed at a bottom of the washing water tank and a support shaft 12 horizontally disposed in an overflow pipe 22 erected in the washing water tank; and a drain valve 14 which swings vertically about the support shaft 12 to fit to and separate from the valve seat 11, so as to stop and allow draining. A hollow swelled portion 15 formed on the under surface of the drain valve 14 is provided with: a first buoyancy adjusting means 16 which adjusts a buoyancy maintaining time for keeping the drain valve 14 open in washing water in the washing water tank; and a second buoyancy adjusting means 17 which makes the further fine adjustment of the buoyancy maintaining time adjusted by the first buoyancy adjusting means 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a drain valve device provided in a wash water tank for storing wash water supplied to a flush toilet.

  Conventionally, a drainage valve device for a flush water tank that stores flush water in a flush toilet has been provided with a mechanism that can selectively supply the quantity of flush water corresponding to both stool and urine. As a technique for adjusting the position arbitrarily and easily, for example, there is a “large and small urinal sorting water saving machine for Western toilets” described in Patent Document 1. This “small urinal sorting water saving machine for Western urinals” is composed of an air chamber with a deformed portion and a rigid air housing, and is cleaned by changing the position of an exhaust port formed through the top of the air housing. It has a function to change water discharge.

  That is, the above-mentioned “large and small urinal sorting water saving machine for toilet bowls” changes the opening time of the discharge port of the washing tank by changing the position of the exhaust port of the air housing and changing the speed of air discharge and buoyancy reduction. The amount of washing water discharged from the washing water tank is changed.

Utility Model Registration No. 3087085

  The “small and small urinal sorting water saving machine for Western urinals” described in Patent Document 1 is a method of adjusting the amount of washing water by changing the position of a single exhaust port penetratingly formed in the air housing. It is difficult to adjust the range. For this reason, the above-mentioned “large and small urinal sorting water-saving machine for toilet bowls” cannot actually respond appropriately at construction sites where fine adjustment of the amount of washing water is required.

  The problem to be solved by the present invention is to provide a drain valve device that can easily finely adjust the amount of washing water discharged from a washing water tank to a flush toilet.

The drainage valve device of the present invention is a drainage valve device for a washing water tank for storing washing water for washing a toilet,
A drain valve main body having a valve seat attached to a drain outlet formed on the bottom surface of the wash water tank, and a support shaft horizontally disposed in the wash water tank;
A drainage valve that drains and shuts off by swinging up and down around the support shaft and coming into contact with the valve seat;
A first buoyancy adjusting means for adjusting a buoyancy maintaining time for keeping the drain valve open in the wash water in the wash water tank, and a hollow bulging portion formed on a lower surface of the drain valve; And a second buoyancy adjusting means for further finely adjusting the buoyancy maintaining time adjusted by the one buoyancy adjusting means.

  With such a configuration, the buoyancy maintenance time of the drain valve adjusted by the first buoyancy adjusting means can be finely adjusted by the second buoyancy adjusting means, so that it is discharged from the wash water tank. The amount of washing water to be adjusted can be easily fine-tuned.

  Here, as the first buoyancy adjusting means, a first through hole communicating with the inside and outside of the hollow bulging portion of the drain valve, and a first through hole movement for changing the position of the first through hole in the drain valve Means.

  With such a configuration, the buoyancy maintenance time of the drain valve can be adjusted with a simple structure provided with a movable first through hole in the hollow bulge of the drain valve, so that the drainage from the flush water tank Fine adjustment of the amount of washing water to be performed is further facilitated.

  Further, as the second buoyancy adjusting means, a second through hole communicating with the inside and outside of the hollow bulging portion of the drain valve, and a second through hole moving means for changing the position of the second through hole in the drain valve And can be provided.

  With such a configuration, the buoyancy maintenance time of the drain valve adjusted by the first buoyancy adjusting means can be further increased by a simple structure provided with a movable second through hole in the hollow bulging portion of the drain valve. Since fine adjustment can be performed by the second buoyancy adjusting means, fine adjustment of the amount of cleaning water discharged from the cleaning water tank is further facilitated.

  In this case, it is desirable that the inner diameter of the second through hole is smaller than the inner diameter of the first through hole.

  With such a configuration, the buoyancy maintenance time of the drainage valve is roughly adjusted by adjusting the position of the first through hole having a larger inner diameter, and the second through hole having a smaller inner diameter than the first through hole is adjusted. By adjusting the position, it becomes possible to finely adjust the buoyancy maintenance time of the drain valve, so that it becomes easier to finely adjust the amount of cleaning water discharged from the cleaning tank.

  According to the present invention, it is possible to provide a drain valve device that can easily finely adjust the amount of washing water discharged from a washing water tank to a flush toilet.

It is a vertical sectional view showing a washing water tank device provided with a drain valve device which is an embodiment of the present invention. FIG. 2 is a vertical sectional view when the drain valve device shown in FIG. 1 is in an open state. It is a perspective view of the drain valve apparatus shown in FIG. It is a perspective view of the drain valve which comprises the drain valve apparatus shown in FIG. It is a disassembled perspective view of the drain valve apparatus shown in FIG. It is sectional drawing in the AA of FIG. It is a perspective view which shows the use condition of the drain valve apparatus shown in FIG. It is a perspective view which shows the use condition of the drain valve apparatus shown in FIG. It is a perspective view which shows the use condition of the drain valve apparatus shown in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the drain valve device 10 of the present embodiment is provided in a washing water tank device 30 that stores washing water W for washing a toilet bowl (not shown). The washing water tank device 30 includes a box-shaped washing water tank 20 that stores washing water, a water supply device 21 that supplies water into the washing water tank 20, and the washing water W stored in the washing water tank 20 as a toilet. A drainage operation device 31 for performing an operation of discharging toward the (not shown), and a drainage valve device 10 that automatically stops after the cleaning water W is discharged in cooperation with the operation of the operation device 31. Yes.

  The water supply device 21 is disposed near a side wall 20 a of the cleaning water tank 20, and performs water supply / water stoppage into the water supply pipe 23 connected to a water supply source (not shown) and the cleaning water tank 20. Therefore, a water supply valve 24 provided at the upper end of the water supply pipe 23 and a float unit 25 that opens and closes the water supply valve 24 according to the vertical movement of the water level of the cleaning water W in the cleaning tank 20 are provided.

  The drainage operation device 31 is horizontally connected to the cleaning water tank 20 in a state where it is connected to the other side wall 20c of the cleaning tank 20 via an operation lever 32 rotatably supported by the operation lever 32 and the adjustment unit 36. The rotating shaft 33 is disposed, and a ball chain 35 that connects the distal end of the arm portion 34 on the distal end side of the rotating shaft 33 and the engaging portion 14a on the top of the drain valve 14 is provided. The adjustment unit 36 has a damper function that generates a resistance force when the operation lever 32 that has been rotated is returned to its original state.

  As shown in FIGS. 1 and 3, the drain valve device 10 is provided in a substantially cylindrical valve seat 11 attached to a drain port 20 c formed on the bottom surface 20 b of the wash water tank 20, and in the wash water tank 20. A drain valve main body 13 having a support shaft 12 horizontally disposed on an overflow pipe 22 provided, and a drain and water stop by swinging in the vertical direction around the support shaft 12 and coming into and out of contact with the valve seat 11. A buoyancy maintaining time for keeping the drain valve 14 open in the wash water W in the wash water tank 20 at the hollow bulge 15 formed on the lower surface of the drain valve 14. The first buoyancy adjusting means 16 for adjusting the buoyancy and the second buoyancy adjusting means 17 for further finely adjusting the buoyancy maintenance time adjusted by the first buoyancy adjusting means 16 are provided. The cylindrical portion 11b below the flange portion 11f of the valve seat 11 is inserted into the drain port 20c, and the lower end portion of the overflow pipe 22 communicates with the substantially cylindrical valve seat 11 through the horizontal flow path 22a. .

  As the first buoyancy adjusting means 16, a first through hole 16 a that communicates the inside and outside of the hollow bulging portion 15 of the drain valve 14, and a first through hole moving means that changes the position of the first through hole 16 a in the drain valve 14. 16b. Further, as the second buoyancy adjusting means 17, a second through hole 17 a that communicates the inside and outside of the hollow bulging portion 15 of the drain valve 14 and a second through hole that changes the position of the second through hole 17 a in the drain valve 14. Moving means 17b. The inner diameter of the second through hole 17a is set smaller than the inner diameter of the first through hole 16a.

  As shown in FIGS. 3 to 6, the drain valve 14 includes a pair of arm portions 18, 18 that are pivotally supported by the support shaft 12 through a shaft hole 18 a on the base end side, and an arm portion 18, 18 is provided with a substantially circular hat-shaped lid body portion 19 integrally formed on the front end side of 18, and a circular dome-shaped hollow bulging portion 15 provided on the lower surface of the lid body portion 19. A bulging portion 19a bulging upward is formed around the axis C of the lid body portion 19, and a disc-shaped flange portion 19b is formed around the ridge portion 19a. When the lower surface of the flange portion 19b comes into contact with the upper edge portion 11a of the valve seat 11, the cleaning water W is discharged and stopped.

  The hollow bulging portion 15 has an annular first through-hole moving means 16b attached to the lower surface of the lid portion 19 so as to be rotatable about the axis C, and a shaft at the lower edge of the first through-hole moving means 16b. The arm-shaped second through-hole moving means 17b is rotatably attached to the center of the center C. The outer surfaces of the first through-hole moving means 16b and the second through-hole moving means 17b form a smoothly continuous curved surface, and form the outer surface of the circular dome-shaped hollow bulging portion 14.

  As shown in FIG. 6, the joint part of the bulging part 19a peripheral part of the lower surface of the cover part 19 and the upper edge part of the 1st through-hole moving means 16b, the lower edge part of the 1st through-hole moving means 16b, and the 2nd through-hole. The joint part with the upper edge part of the moving means 17b is joined by the uneven | corrugated fitting mechanism 14b and 14c which can each be slid to the circumferential direction. The first through-hole moving means 16b and the second through-hole moving means 17b can rotate about the axis C independently of the lid body portion 19, and the second through-hole moving means 17b has a bottom top portion. The through hole 17c is opened. The inner diameter of the through hole 17c is smaller than the first through hole 16a and larger than the second through hole 17a.

  As shown in FIG. 1, when the flush water tank device 30 is in a standby state, the drain valve 14 of the drain valve device 10 is in close contact with the valve seat 11 and is in a water stop state. The washing water W is kept at a constant water level. At this time, the wash water W does not exist in the hollow bulging portion 15 of the drain valve 14, and is in the same state as in the atmosphere.

  As shown in FIG. 2, when the operation lever 32 is rotated, the rotation shaft 33 and the arm portion 34 rotate and the entire ball chain 35 is pulled up. It pivots so as to stand upward at the center. As a result, as shown in FIG. 3, the flange portion 19 b of the drain valve 14 is separated from the upper edge portion 11 a of the valve seat 11 and is opened, so that the cleaning water W in the cleaning water tank 20 is contained in the valve seat 11. And is supplied toward a faucet (not shown).

  As shown in FIG. 2, in the drain valve 14 after being rotated in the upright direction by the opening operation of the operation lever 32, the air present in the hollow bulging portion 15 is filled with the first through hole 16 a and the second through hole. Since the bubbles B are discharged into the cleaning water W through 17a and the cleaning water W flows into the hollow bulging portion 15 through the through-holes 17c, it acts on the drain valve 14 in the cleaning water W. The buoyancy gradually decreases, the drain valve 11 rotates about the support shaft 12 and gradually descends toward the valve seat 11. Finally, the flange portion 19 b of the drain valve 14 is the upper edge of the valve seat 11. It adheres to 11a and returns to the valve closing state shown in FIG. Thereafter, automatic water supply by the water supply device 21 is performed until the level of the cleaning water W in the cleaning water tank 20 reaches a predetermined level.

  In the drainage device 10, the amount of flush water discharged from the flush water tank 20 toward the faucet (not shown) is such that the drainage valve 14 opened by manual operation of the operation lever 32 loses buoyancy immediately after opening the valve. It is determined by the time until closing. Therefore, the amount of cleaning water discharged from the cleaning water tank 20 can be adjusted by adjusting the buoyancy maintenance time of the drain valve 14. Therefore, in the drainage device 10, as described above, the buoyancy for keeping the drain valve 14 open in the wash water W in the wash water tank 20 on the hollow bulging portion 15 formed on the lower surface of the drain valve 14. A first buoyancy adjusting means 16 for adjusting the maintenance time and a second buoyancy adjusting means 17 for further finely adjusting the buoyancy maintenance time adjusted by the first buoyancy adjustment means 16 are provided.

  As shown in FIG. 3, both the first through hole 16 a of the first buoyancy adjusting means 16 and the second through hole 17 a of the second buoyancy adjusting means 17 are supported by the support shaft 12 that is the rotation center of the drain valve 14. When the drain valve 14 is rotated in the upright direction by opening the operation lever 32, the air in the hollow bulging portion 15 of the drain valve 14 is set to the position farthest from the head (hereinafter referred to as “front position”). Since the water is quickly discharged into the cleaning water W through both the first through holes 16a and the second through holes 17a, the buoyancy maintenance time for keeping the drain valve 14 open is shortened, and the cleaning water tank 20 The amount of washing water discharged from is small.

  Here, as shown in FIG. 7, only the first through-hole moving means 16b of the first buoyancy adjusting means 16 is rotated about 90 degrees about the axis C, and the first through-hole 16a is moved from the front position to the support shaft. When the first through hole 16a is in the front position (see the state shown in FIG. 3), the air is discharged from the hollow bulging portion 15 through the first through hole 16a. ), The buoyancy maintenance time for keeping the drain valve 14 open becomes longer, and the amount of cleaning water discharged from the cleaning water tank 20 increases. In this case, since the inner diameter of the first through-hole 16a is larger than the inner diameter of the second through-hole 17a, changing the position of the first through-hole 16a greatly changes the air discharge speed, and accordingly the buoyancy maintenance time also changes greatly. Therefore, the set value of the amount of cleaning water discharged from the cleaning water tank 20 can be changed greatly.

  On the other hand, as shown in FIG. 8, only the second through-hole moving means 17b of the second buoyancy adjusting means 17 is rotated about 90 degrees about the axis C, and the second through-hole 17a is moved from the front position to the support shaft 12 as shown in FIG. When the first through hole 17a is in the front position, the air is discharged from the hollow bulging portion 15 of the drain valve 14 through the second through hole 17a (see FIG. 3). Therefore, the buoyancy maintenance time for keeping the drain valve 14 open becomes longer, and the amount of cleaning water discharged from the cleaning water tank 20 increases. In this case, since the inner diameter of the second through hole 17a is smaller than the inner diameter of the first through hole 16a, the change in the air discharge speed when the position of the second through hole 17a is changed is small, and the change in the buoyancy maintenance time associated therewith is also small. Since it is small, the set value of the amount of cleaning water discharged from the cleaning water tank 20 can be finely changed.

  Further, as shown in FIG. 9, only the second through-hole moving means 17b of the second buoyancy adjusting means 17 is rotated about 180 degrees around the axis C, and the second through-hole 17a is directed to the support shaft 12 side. When the drain valve 14 is opened, the second through hole 17a functions as a water inflow hole into the hollow bulging portion 15 when the drain valve 14 is opened. Thereby, the discharge speed of the air discharged from the hollow bulging portion 15 through the first through hole 16a becomes faster than when the second through hole 17a is in the front position (in the state shown in FIG. 3). Since the inflow speed of the cleaning water W into the hollow bulging portion 15 increases, the buoyancy maintenance time for keeping the drain valve 14 open is shortened, and the amount of cleaning water discharged from the cleaning water tank 20 decreases. .

  As described with reference to FIGS. 3, 7, and 8, the drainage valve device 10 uses the second buoyancy adjustment means 17 to set the buoyancy maintenance time of the drainage valve 14 adjusted by the first buoyancy adjustment means 16. Since it can be finely adjusted, the amount of cleaning water discharged from the cleaning water tank 20 can be easily finely adjusted. In addition, the buoyancy maintenance time of the drain valve 14 is adjusted by a simple structure in which the hollow portion 15 of the drain valve 14 is provided with the first through hole 16a and the second through hole 17a that are rotatable about the axis C. Therefore, it is effective for facilitating the fine adjustment work of the amount of cleaning water discharged from the cleaning water tank 20.

  Furthermore, by making the inner diameter of the second through-hole 17a smaller than the inner diameter of the first through-hole 16a, the position of the first through-hole 16a having the larger inner diameter is adjusted to roughly adjust the buoyancy maintenance time of the drain valve 14. By adjusting the position of the second through hole 17a having a smaller inner diameter than the first through hole 16a, the buoyancy maintenance time of the drain valve 14 can be finely adjusted, so that the amount of cleaning water discharged from the cleaning tank 20 It is very easy to make fine adjustments.

  The drainage valve device of the present invention can be widely used as a component of a toilet flushing water tank device for flush toilets such as ordinary houses and public facilities.

DESCRIPTION OF SYMBOLS 10 Drain valve apparatus 11 Valve seat 11a Upper edge part 11b Cylindrical part 11f, 19b Flange part 12 Support shaft 13 Drain valve body part 14 Drain valve 14a Locking part 14b, 14c Concavity and convexity fitting mechanism 15 Hollow bulging part 16 1st Buoyancy adjusting means 16a first through-hole 16b first through-hole moving means 17 second buoyancy adjusting means 17a second through-hole 17b first through-hole moving means 17c through-holes 18, 34 arm part 19 lid part 19a bulge Section 20 Washing water tank 20a, 20c Side wall 20b Bottom 21 Water supply device 22 Overflow pipe 23 Water supply pipe 24 Water supply valve 25 Float part 30 Washing water tank apparatus 31 Operation device 32 Operation lever 33 Rotating shaft 35 Ball chain

Claims (4)

A drain valve device for a washing water tank for storing washing water for washing a toilet,
A drain valve main body having a valve seat attached to a drain outlet formed on the bottom surface of the wash water tank, and a support shaft horizontally disposed in the wash water tank;
A drainage valve that drains and shuts off by swinging up and down around the support shaft and coming into contact with the valve seat;
A first buoyancy adjusting means for adjusting a buoyancy maintaining time for keeping the drain valve open in the wash water in the wash water tank, and a hollow bulging portion formed on a lower surface of the drain valve; And a second buoyancy adjusting means for further finely adjusting the buoyancy maintenance time adjusted by the one buoyancy adjusting means.   As the first buoyancy adjusting means, a first through hole communicating with the inside and outside of the hollow bulge portion of the drain valve, a first through hole moving means for changing the position of the first through hole in the drain valve, The drainage valve device according to claim 1, wherein the drainage valve device is provided.   As the second buoyancy adjusting means, a second through hole communicating with the inside and outside of the hollow bulge portion of the drain valve, a second through hole moving means for changing the position of the second through hole in the drain valve, The drainage valve device according to claim 1 or 2, wherein the drainage valve device is provided.   The drain valve device according to claim 3, wherein an inner diameter of the second through hole is made smaller than an inner diameter of the first through hole.

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