JPH0220774B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a flush valve for flushing a toilet bowl.

Conventionally, various structures have been known as flush valves for flushing toilets, such as those disclosed in Utility Model Application Publication No. 4151 of 1929 and Utility Model Application Publication No. 4151 of 1932.
There is one in Publication No. 16840.

All of these are flash valves that have a regulating valve body and a flush valve body, and although the instantaneous flow rate can be reduced by adjusting the regulating valve, they are equipped on the main valve body of the flush valve body. The relief valve, which connects the pressure chamber behind the main valve body to the secondary side of the flow path, opens the main valve by directly pushing the valve shaft integrated with the relief valve body with a push rod and tilting the relief valve body. Since the valve is configured to open, if the push rod is continuously pressed, the relief valve will not close, and the main valve will not close, so water will be left to flow and wastefully flow out.

Some flush valves are designed to discharge a predetermined amount of water by adjusting an adjustment screw screwed into the flush valve body, regardless of how long or short the push rod is pressed. We don't know if there is, and we need to know the amount.

Therefore, in order to know the amount of water being flushed, it is sufficient to install a display mechanism and display the amount, but in order to do this, the adjustment screw is screwed in at the factory, the actual amount of water is measured, and this actual amount is measured. For example, it is necessary to match the water discharge amount with an indicator provided on the adjustment screw and an indication provided on the lid, but it is difficult to stamp or print the indication directly on the lid each time.

In addition, even if you take the trouble to match the amount of washing water indicated by the indicator and display with the actual amount of water, if the indicator or display is tampered with, such as by moving the indicator or display, the indicated amount of water and the actual amount of water will deviate, rendering the display meaningless. I get used to it.

The present invention solves the above-mentioned problems, provides a display indicating the amount of water discharged in the adjustment section, allows the amount of washing water indicated by the display and the index to accurately match the actual amount of water discharged, and makes it easier to match the index with the display, and furthermore, makes adjustment possible. The purpose is to protect the department from tampering.

In order to achieve the above object, the present invention provides an adjustment section of a flush valve main body that has an insertion hole formed in the lid, is attached to the insertion hole, and has an inner end that is inserted through the lid. an adjustment screw extending into the pressure chamber and corresponding to the main valve body; an annular recess formed on the upper surface of the lid body surrounding the insertion opening; an indicator located on the opening surface of the annular recess and having a hole in the center through which the outer end of the adjustment screw faces; an index provided on the upper surface of the outer end of the adjustment screw; The lid body of the regulating valve body and the flush valve body adjustment part are connected to the outer peripheral surface of the opening of the regulating valve body and the outside of the lid body of the flush valve body. Each is covered with a cover which is screwed onto the circumferential surface and has a cylindrical shape with a bottom and a flat bottom plate.

Hereinafter, an example of implementation will be explained with reference to the drawings. In the drawing, A is the regulating valve body, which has an inlet on the bottom, an outlet 2 on the side, and an opening 3 on the head. 1 is connected to a water supply source (not shown) via a water supply pipe 4, and an outlet 2 is connected via a communication pipe 5 to a flush valve main body B, which will be described later.

In addition, the regulating valve body A has an opening 3 formed in the head.
Threaded portions 6 and 7 are provided on the inner peripheral surface and outer peripheral surface of the
A lid body 55 is provided with an adjustment part 8 on the screw part 6 on the inner circumferential surface.
However, a cover 9 having a cylindrical shape with a bottom and a flat bottom wall is screwed onto the threaded portion 7 on the outer peripheral surface so as to cover the lid body 55. The lid body 55 has a central opening 56.
An adjustment screw 10 for adjusting the water force is screwed into the flush valve main body B to provide an adjustment portion 8, and a recessed hole 11 is provided in the interior of the adjustment screw 10 in the axial direction. . Further, an adjustment valve seat 12 is provided between the inflow port 1 and the outflow port 2 so as to face the opening 3, and an adjustment valve body a corresponding to the adjustment valve seat 12 is provided.
is placed on the secondary side. The regulating valve body a also has the function of a check valve.

The adjusting valve body a has a valve shaft 13 protruding from its back surface,
The valve shaft 13 is slidably or loosely inserted into the recessed hole 11 of the adjusting screw 10.

B is a flash valve main body, 14 is an inlet port that communicates with the regulating valve main body A via the connecting pipe 5;
Reference numeral 5 denotes an outflow port that communicates with a toilet bowl (not shown), and these two ports 14 and 15 communicate with each other via a main valve seat 16.

Reference numeral 17 is an opening opened opposite to the main valve seat 16, and this opening 17 is closed by a lid body 18.

Reference numeral 19 denotes a valve body, which is composed of an upper valve body 19a and a lower valve body 19b, and the valve body 19 is formed by screwing the two valve bodies 19a and 19b together. In the illustrated example, a piston is used as the valve body 19.

The lower valve body 19b has a main valve body portion 20 and a guide vane piece 21. They are arranged so as to be slidable on the inner circumferential surface 22 of the valve seat hole of the valve seat 16, respectively.

Further, behind the valve body 19, a pressure chamber 23 is formed by the upper valve body 19a of the valve body 19 and the lid body 18, and the main valve body portion 20 is made to correspond to the main valve seat 16 to constitute the main valve b. do.

The upper valve body 19a is connected to the pressure chamber 23 via the control valve seat 24, and has a bypass passage 2 provided at the bottom.
A control valve chamber 26 that communicates with the inlet 14 side via 5
, the relief valve chamber 29 which communicates with the pressure chamber 23 via the passage 27 and the outlet 15 side via the relief valve seat 28 and the direct pressure chamber 23 are connected to the inlet 1
A small passageway 30 is provided to communicate with the fourth side.

The control valve chamber 26 has a control valve body 31 corresponding to the control valve seat 24 and forming a control valve c, and the relief valve chamber 29 has a relief valve corresponding to the relief valve seat 28 forming a relief valve d. The bodies 32 are respectively deployed. The control valve body 31 has a valve shaft 33 provided on the upper surface.
The control valve body 31 is inserted through the control valve seat 24 and accommodated in the control valve chamber 26 so as to face the pressure chamber 23 side, and rides on a step provided at the bottom of the control valve chamber 26.
A gap is formed between the circumferential surface of the control valve chamber 26 and the wall surface of the control valve chamber 26 so that water can pass therethrough.

The relief valve body 32 is integrally provided with a cylindrical guide member 34 on its lower surface, and a sliding member 35 is attached to the guide member 34 so as to be slidable and non-removable. It is disposed in the relief valve chamber 29 so as to loosely fit through the relief valve seat 28 and extend toward the outflow port 15, and is constantly pressed toward the relief valve seat 28 by a spring 36.

Reference numeral 37 denotes a push rod constituting an operating section, which is supported in a reciprocating manner by a support member 38, the tip of which faces close to the lower side of the sliding member 35, and the base of which is pressed by a spring 39 and elastically communicates with the handle 40. When the handle 40 is manually pushed, it moves forward against the repulsive force of the spring 39, and when it is released, it returns to its original position due to the repulsive force of the spring 39. Note that instead of manually pushing the push rod 37 directly with the handle 40, the push rod 37 may be pushed using force such as electricity or water pressure.

On the other hand, the lid body 18 is provided with an adjustment part 41 on its upper part and has a threaded part 42 formed on its outer periphery. A cover 43 is screwed to cover the adjustment section 41.

The adjustment part 41 has an insertion port 44 that projects from the center of the top surface of the lid body 18 in a cylindrical shape and communicates with the pressure chamber 23 to the outside. Annular recess 46 on the outer periphery
is formed therein, and a display body 47 is provided thereon so that its upper surface is substantially flush with the opening surface of the annular recess 46 . The adjustment screw 45 has a groove 48 for engaging a tool such as a screwdriver formed on its upper surface, and an indicator 49 such as a point or an arrow is provided by stamping or the like.

The display body 47 is formed into a disk shape from synthetic resin such as ABS resin, and has a hole 50 in the center thereof through which the outer end of the adjustment screw 45 faces, and legs 51 are integrally formed on the back side of the hole 50. ing.

The annular recess 46 is formed to have a large diameter on the front side and a small diameter on the back side, and the leg portion 51 of the display body 47 is formed to have a slightly larger diameter than the inner peripheral surface of the small diameter portion 52 of the annular recess 46. Using the elasticity of 51, the small diameter part 5
2 to prevent the display body 47 from coming off. At this time, the display body 47 is arranged such that its surface slightly enters into the recess 46 than the opening end surface of the annular recess 46 or is flush with the opening end surface. Further, on the surface of the display 47, a display 53 corresponding to the indicator 49 of the adjustment screw 45 is provided by hot stamping or the like, and a number indicating the amount of water discharged from the flush valve in liters is drawn.

After the adjustment screw 45 is rotated to obtain a predetermined displacement amount, this display body 47 displays the displacement amount and the displacement amount indicated by the indicator 49 of the adjustment screw 45 and the display 53 of the display body 47. Attach it to the annular recess 46 so that they match.

54 is the insertion hole 44 in the exposed part of the adjustment screw 45.
Adjustment screw 4 is rotated by turning adjustment screw 45 with a retaining ring attached at an appropriate interval from the upper end.
5 is screwed in, this touches the upper opening edge of the insertion hole 44 and prevents the adjustment screw 45 from falling into the pressure chamber 23. Therefore, the adjustment screw 45
The upper end is always above the upper opening edge of the insertion port 44,
In other words, the annular recess 46 is located above the opening edge, and even if a screwdriver is engaged with the groove 48 and the adjustment screw 45 is rotated, the screwdriver will come into contact with the surface of the display 47, damaging the surface or causing damage to the display. There is no fear of scraping off the material.

Therefore, in such a flush valve, the regulating valve body A is used to adjust the water force to the flush valve body B, and when the main valve b of the flush valve body B opens, the adjustment valve body A is adjusted by the water supply pressure. When the valve a is moved away from the valve seat 12, the inlet port 1 and the outlet port 2 are brought into communication, and water can be supplied from the water supply pipe 4 to the flush valve main body A via the communication pipe 5.

Further, in order to adjust the water force to the flush valve body B, the opening degree of the regulating valve a is set by rotating the adjusting screw 10 of the regulating valve body A, and the water force can be adjusted.

On the other hand, the flash valve body B has a handle 40.
When the push rod 37 is pushed, the push rod 37 moves forward, resists the spring 39, tilts the relief valve body 31 through the sliding member 35 and the guide member 34, and separates it from the relief valve seat 28, thereby closing the relief valve. Open valve d.

Therefore, the pressure chamber 23, the passage 27, the relief valve chamber 2
9 is released to the outlet 15, and the pressure in the pressure chamber 23 becomes lower than the water pressure at the inlet 14, the valve body 19 rises, and the main valve body 20 moves toward the main valve seat 1.
6, the main valve b opens, and water begins to flow from the inlet 14 to the outlet 15.

At this time, the control valve body 31 is pushed up by the water pressure, and the control valve c is closed.

Subsequently, as the valve body 19 rises, the sliding member 35 is pulled up and rides on the push rod 37,
When the guide member 34 and the sliding member 35 become slidable, the relief valve body 32 is pressed against the relief valve seat 28 by the spring 36, and the relief valve d
is closed.

Further, just before the relief valve d closes, the valve shaft 33 of the control valve body 31 comes into contact with the bottom surface of the adjustment screw 45,
Control valve c opens.

On the other hand, since the valve body 19 starts to fall when the relief valve d closes, the pressure chamber 23 is connected to the control valve c and the small passage 3.
The volume of the valve body 19 rapidly increases due to the water flowing in from zero, and the valve body 19 rapidly descends.

When the valve stem 33 comes out of contact with the bottom surface of the adjustment screw 45, the control valve body 31 is pushed up by water pressure and comes into contact with the control valve seat 24, and the control valve c is completely closed. The small amount of water that flows into the pressure chamber 23 from only the passage 30 continues to slowly descend, and finally the main valve b closes to stop the flow of water, and the connection between the pressure chamber 23 and the inlet 14 is reduced. The pressures become equal, and the control valve element 31 naturally lowers due to its weight and is placed on the stepped portion of the control valve chamber 26. Therefore, by rotating the adjustment screw 45, the valve body 19
The closing timing of control valve c during the descent of is adjusted;
This changes the closing time of the main valve b and determines the amount of water discharged.

That is, if the adjustment screw 45 is rotated to set its bottom downward, the main valve b will close earlier and the amount of water discharged will decrease, and if it is set upward, the amount of water discharged will increase.

Since the present invention is constructed as described above, the water force and drainage volume can be adjusted by controlling the regulating valve and the main valve by the respective regulating parts, so that one type of flush valve can be used in locations with different water supply pressures or in locations with different wash water supply pressures. It can be commonly used for toilet bowls with different required amounts.

Therefore, there is no need to prepare several types of flash valves, and parts management is easy and costs are low.
In addition, water can be saved by adjusting the water force and drainage volume to the optimum level for the toilet bowl and preventing water from flowing in excess of the required amount without impairing the cleaning function. Also,
Since it is equipped with a cover that covers both adjustment parts, the adjustment parts are difficult to be tampered with, and since the head of the display body is flush with the opening surface of the annular recess, there is no risk of damage if the display body is moved. So the display is accurate. Furthermore, by covering the adjustment parts of the adjustment valve and flush valve with covers, it is possible to prevent dust from entering the adjustment parts and cause malfunctions, and by changing the shape of the cover, it is possible to change the design. Looks good too.

In addition, since the cover has a cylindrical shape with a bottom and a flat bottom wall, there is no protruding part on the top surface of the cover.
It is also possible to place things there.

Further, since an adjustment screw having an index on the upper surface of the outer end is inserted through a hole in the display body having the display, it is easy to adjust the index to the display. Furthermore, even if water leaks from the adjustment screw, the cover can prevent the water from leaking to the outside, preventing the floor from getting wet.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view showing the flush valve of the present invention, and FIG. 2 is an enlarged sectional view taken along the line - in FIG. 1. A...Adjustment valve body, B...Flush valve body, 1...Inflow port of the regulation valve body, 2...Outlet port of the regulation valve body, 3...Opening of the regulation valve body, 9...Adjustment valve body Cover, 10...Adjustment screw of the regulating valve body, 12...Adjusting valve seat, 14...Inflow port of the flush valve body, 15...Outlet port of the flush valve body, 16...Main valve seat, 17 ... Opening of the flash valve body, 18 ... Lid of the flash valve main body, 19 ... Main valve, 23 ... Pressure chamber, 30
... Small passageway, 32 ... Relief valve body, 34 ... Guide member, 35 ... Sliding member, 37 ... Push rod, 4
1... Adjustment part of the flash valve body, 43...
Cover of the flash valve body, 44...Insertion port, 45...Adjustment screw of the flash valve body,
46... Annular recess, 47... Indicator, 49... Index, 50... Hole, 53... Display, 55... Lid of regulating valve body, a... Adjusting valve body, b... Main valve, d...
...Relief valve.

Claims (1)

[Claims] 1. An opening coaxially opened between an inlet and an outlet communicating with a water supply source, an adjustment valve seat, an adjustment valve body that approaches and separates from the adjustment valve seat, a lid that is screwed onto the inner periphery of the opening, an opening coaxially formed between a regulating valve body that is attached to the lid so as to be freely movable and retractable and has an adjusting screw that is linked to the regulating valve body; an inlet that communicates with the outlet; and an outlet that communicates with the toilet bowl; and a main valve seat, a lid body screwed onto the opening, a main valve body that corresponds to the main valve seat from the primary side of the flow path and constitutes the main valve together with the main valve seat, and a main valve body provided behind the main valve body. and a pressure chamber that communicates with the primary side of the flow path via a small passage, a relief valve that is installed on the main valve body and connects the pressure chamber with the secondary side of the flow path, and a relief valve that is installed on the lid body that controls the main valve. The relief valve is provided with a guide member integrated with the relief valve body, a sliding member is slidably attached to the guide member, and the relief valve is operated by a push rod through the sliding member. The flash valve is equipped with a flash valve main body configured to open the main valve by tilting the valve body, and the adjustment section has an insertion hole formed in the lid body and a flash valve body configured to open the main valve by tilting the valve body. an adjustment screw that is attached to the insertion opening and whose inner end extends into the pressure chamber through the lid and corresponds to the main valve body; an annular recess that surrounds the insertion opening and is recessed on the top surface of the lid; and a disc. a display body formed in the shape of a shape and fitted into the annular recess, the upper surface of which is located on the opening surface of the annular recess, and a hole bored in the center through which the outer end of the adjustment screw faces; It has an indicator provided on the top surface of the end portion and a display provided on the top surface of the display body to indicate the amount of water discharged corresponding to the indicator, and the lid body of the adjustment valve body and the flush valve body adjustment portion are The flash is characterized in that the outer peripheral surface of the opening of the regulating valve body and the outer peripheral surface of the lid of the flash valve main body are each covered with a cover having a bottomed cylindrical shape and a flat bottom wall. valve.