JP2697526B2 - Flash valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main valve of a flush valve for supplying flush water to a flush toilet and the like, and more particularly to a structure for preventing a pilot small hole of a piston main valve from being closed.

[0002]

2. Description of the Related Art An example of a flush valve for a urinal is a third example.
This will be described with reference to the drawings. The valve casing 10 has the inlet 1
2 and an outlet 14, between which a piston main valve 16 is provided. A water stopcock (not shown) is provided in a water supply pipe 17 connected to the inflow port 12.

[0003] The piston main valve 16 has an inner hole 18 vertically passing through the inside thereof, and a sleeve-like piston guide portion 20 is provided at a lower end thereof. The sleeve-shaped piston guide portion 20 is slidably inserted into the opening 22 a of the partition wall 22.

A starting valve 24 is inserted into an inner hole 18 of the main valve 16, and a valve shaft 24a of the starting valve 24 is inserted through the piston guide portion 20 and extends downward. Reference numeral 26 denotes a push button, and a push rod 28 is provided in series, and the push rod 28 can contact the valve shaft 24a of the start valve 24 to tilt the start valve 24.

An opening is provided above the valve casing 10, and a cover cap 30 is screwed into the opening.
A stopper (adjustment screw) 32 is screwed into the stopper screw insertion hole 31 of the cover cap 30. The stopper 32 is for adjusting the position of the piston main valve 16 as far as possible to ascend.

A starting valve 2 is provided in an inner hole 18 of the piston main valve 16.
A seat portion 34 on which the seat 4 is seated is provided so as to protrude from the inner peripheral wall, and a rubber packing 36 is provided on the upper surface side thereof.
Presser nut 3 screwed into inner hole 18 of piston main valve 16
8 fixed. A compression coil spring 40 for urging the start-up valve 24 downward is disposed on the valve head upper surface of the start-up valve 24, and the upper end side of the spring 40 is fixed by a receiving nut 42 screwed into the inner hole 18. ing. The main valve 16 is provided with a water passage 43. Receiving nut 4
2 is provided with a pilot small hole 44 for introducing pilot water into the upper pilot water chamber B.

[0007] A strainer 46 is mounted on the outer peripheral surface of the piston main valve 16. The strainer 46 has a structure in which a mesh 50 is adhered to a portion of the window hole of a ring 48 having a window hole. The ring 48 is externally fitted to the main valve 16 and is fixed to the main valve 16 by fastening the receiving nut 42 to the main valve 16 from above.

A packing 52 is fitted on the outer peripheral portion of the upper portion of the main valve 16.

In the flush valve configured as described above, when the push button 26 is pressed to tilt the starting valve 24, the pilot water chamber B above the piston main valve 16 is raised.
The internal water pressure passes through the inner hole 18 of the piston main valve 16 and flows into the chamber C on the outflow side of the partition wall 22. As a result, the water pressure balance between the chamber A and the pilot water chamber B upstream of the piston main valve 16 is broken, and the water pressure in the chamber A pushes up the piston main valve 16 to open the valve. The water supply flows out of room A through room C to the toilet bowl.

On the other hand, during the outflow of the feed water, the water passing through the strainer 46 gradually flows into the pilot water chamber B through the small hole 44, and the water pressure causes the piston main valve 16 to be gradually pushed down, and eventually. Shut off the wash water flow.

In a flush valve for a toilet bowl,
A lever handle is provided instead of the push button 26.

[0012]

In the above-mentioned conventional flash valve, the receiving nut 42 of the piston main valve 16 is used.
When the small hole 44 is clogged by foreign matter in the water, it is necessary to remove the cover cap 30 and further turn the receiving nut 42 to remove it, and the repair work is extremely complicated.

[0013]

According to a first aspect of the present invention, there is provided a flush valve having a piston main valve which is movable up and down in a valve casing, and the piston main valve has an inner hole penetrating in the axial direction of the main valve. An activation valve is provided so as to be seated on a seat protruding from the inner wall of the inner hole, and a compression coil spring for pressing a valve head of the activation valve, and the spring is located inside the main valve. As described above, in a flash valve comprising a receiving nut screwed into the piston main valve and a pilot small hole penetrating through the receiving nut, the pilot nut is provided with the receiving nut. A plurality of plates are provided in the circumferential direction of the receiving nut, and a plate abutted on the spring-side surface of the receiving nut, a shaft hole provided at the center of the receiving nut, and a projecting hole from the plate. ,
A boss portion passing through the shaft hole, and a through-hole portion provided on the plate for opening one pilot small hole are provided.

The flash valve according to the second aspect is the first aspect of the invention.
In the flush valve, a cover cap is provided above the piston main valve, a stopper screw insertion hole is provided through the center of the cover cap, and a stopper with which the valve head of the starting valve abuts the stopper screw insertion hole. It is screwed,
The stopper screw insertion hole and the shaft hole of the receiving nut are arranged on the same straight line, and an engaging portion of a plate rotating tool is provided at a tip of a boss portion inserted through the shaft hole. It is characterized by the following.

The flash valve according to the third aspect is the second aspect of the invention.
In the above, the plate and the receiving nut are provided with positioning irregularities for matching the positions of the opening of the plate and the pilot small hole of the receiving nut.

[0016]

According to the flash valve of the present invention,
When the starting valve is opened, the water pressure in the pilot water chamber is released through the pilot small hole, and the piston main valve is opened.
Further, the water flows into the pilot water chamber through the pilot small hole of the piston main valve, whereby the piston main valve gradually moves in the seating direction.

When foreign matter is clogged in the pilot hole, the boss of the plate is turned with an appropriate tool so that the opening provided in the plate matches another pilot hole. Then, water flows into and out of the pilot water chamber through the new pilot small hole, and the normal operation of the piston main valve is restored.

In the flash valve according to the second aspect,
Remove the stopper from the stopper screw insertion hole of the cover cap,
A tool such as a driver is inserted into the pilot water chamber through the stopper screw insertion hole. Then, the tip of the tool is engaged with the engaging portion at the tip of the boss, and the plate is turned. Thereby, the opening of the plate can be easily matched with another pilot small hole. At this time, it is unnecessary to remove the cover cap, and the operation is simple.

In the flash valve according to the third aspect,
When the plate is rotated as in the second aspect, the plate is rotated until the opening of the plate matches the pilot small hole by the engagement of the concave and convex portions. This makes it very easy to match the opening of the plate to the new pilot hole.

[0020]

Embodiments will be described below with reference to the drawings. FIG. 1 is a sectional view showing a flash valve according to an embodiment, and FIG. 2 is a perspective view showing an engagement relationship between a receiving nut and a plate.

In this embodiment, the plate 60 is arranged on the lower surface side of the receiving nut 40, and the spring 40 is pressed. A boss 62 projects from the center of the plate 60, and the boss 62 is inserted into a shaft hole 64 provided in the center of the receiving nut 40. E-ring 6 on boss 62
6, which prevents the boss portion 62 from coming off. A one-character groove 68 is provided at the tip of the boss 62 to engage with the tip of a minus driver. One opening 70 is provided in the plate 60 so as to overlap the pilot small hole 44.

In this embodiment, a total of four pilot small holes 44 are provided at every 90 ° in the circumferential direction of the shaft hole 64. A total of four concave portions 74 are provided on the lower surface of the receiving nut 42 at every 90 ° in the circumferential direction of the shaft hole 64 so as to be positioned at the same radius as one convex portion 72 provided on the upper surface of the plate 60. I have.

The rest of the configuration is the same as that of the conventional example shown in FIG.

Also in this embodiment, when the push button (not shown in FIG. 1) is pressed to tilt the starting valve 24, the water pressure in the pilot water chamber B is released through the pilot small hole 44, and the piston main valve 16 is turned off. Moving upward, water flows from the water chamber A to the water chamber C. Thereafter, when the starting valve 24 is closed,
Water gradually flows into the pilot water chamber B through the pilot small hole 44, and the piston main valve 16 gradually moves downward,
Finally, the user sits on the packing 56 of the valve seat section 20.

When the pilot hole 44 is closed by foreign matter, the stopper 32 (not shown) of the water supply pipe is closed, and then the stopper 32 is turned off to open the stopper screw insertion hole 31. Then, a minus driver (not shown) is inserted into the pilot water chamber B through the stopper screw insertion hole 31, the tip of the driver is engaged with the groove 68 at the tip of the boss portion 62, and the driver presses the plate 60 while pressing 90. ° turn. As a result, the opening 70 of the plate matches another pilot small hole 44. The pilot hole 44 which had been aligned with the opening 70 was closed by the plate 60.

In this embodiment, when the plate 60 is rotated as described above, the engagement of the concave and convex portions 72 and 74 causes the plate 60 to reach a state where the opening 70 of the plate 60 matches the pilot small hole 44. To make the opening 70 of the plate 60 coincide with the new pilot small hole 44 very easily.

After the pilot water chamber B is communicated with the water channel through another pilot small hole 44, the stopper 32 is again screwed into the stopper screw insertion hole 31 to complete the repair.

In the above embodiment, four pilot small holes 44
Are provided, but any number may be used.

In the above embodiment, the opening is constituted by an opening, but may be constituted by a notch cut from the outer periphery of the plate 60.

[0030]

As described above, according to the flush valve of the present invention, when the pilot hole of the piston main valve is closed, the plate is turned so that a new pilot hole can be used. Repair can be performed very easily when clogging occurs.

In the flash valve according to the second aspect,
The plate can be turned by inserting a tool such as a screwdriver into the stopper screw insertion hole, and the work of rotating the plate can be performed extremely easily.

In the flash valve according to the third aspect,
The positioning of the plate can be performed reliably.

[Brief description of the drawings]

FIG. 1 is a sectional view of a flash valve according to an embodiment.

FIG. 2 is a perspective view showing an engagement relationship between a plate and a receiving nut.

FIG. 3 is a sectional view of a conventional flash valve.

[Explanation of symbols]

 Reference Signs List 10 valve casing 16 piston main valve 24 starting valve 30 cover cap 31 stopper screw insertion hole 32 stopper (adjustment screw) 38 holding nut 40 spring 42 receiving nut 44 pilot small hole 60 plate 62 boss portion 64 shaft hole 70 through hole

Claims (3)

(57) [Claims] A piston main valve capable of moving up and down is provided in a valve casing. The piston main valve is provided with an inner hole penetrating in the axial direction of the main valve. A starting valve is installed so as to be seated, and a compression coil spring that presses a valve head of the starting valve,
A flash valve comprising: a receiving nut screwed onto the piston main valve so that the spring is located inside the main valve; and a pilot small hole penetrating the receiving nut. A plurality of pilot small holes are provided in the nut in the circumferential direction of the receiving nut, and a plate in contact with the spring-side surface of the receiving nut is provided at the center of the receiving nut. A shaft hole, a boss protruding from the plate and passing through the shaft hole, and a piercing portion provided on the plate for opening one pilot small hole. A flash valve. 2. The flash valve according to claim 1, wherein
A cover cap is provided above the piston main valve,
A stopper screw insertion hole is provided at the center of the cover cap, and a stopper for contacting the valve head of the piston main valve is screwed into the stopper screw insertion hole. A flush valve, wherein the flush hole is disposed on the same straight line as the hole, and an engagement portion of a plate rotating tool is provided at a tip of the boss portion inserted into the shaft hole. 3. The method according to claim 2, wherein the plate and the receiving nut are provided with positioning irregularities for aligning the position of the opening of the plate with the position of the pilot small hole of the receiving nut. Features a flash valve.