JPS5830457B2 - Freeze prevention device in flush toilets - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an anti-freezing device for a flush toilet, and is designed to drain and replace water in a water tank, especially at low temperatures.

In cold regions, the water in the water tank of a flush toilet or the water storage part of the toilet bowl often freezes, so a small amount of water always flows into the water tank and the excess water flows out to the toilet bowl. There was something I did.

However, with this level of running water, it was insufficient to prevent freezing in areas close to the outdoors in winter.

The present invention allows water to flow into the industrial water tank above the normal water level at low temperatures, and when the water level reaches a predetermined position, opens the drain valve in the same way as normal drainage, thereby completely preventing freezing. With the goal.

In other words, if all the water in the water tank is drained, any small amount of ice that has formed in the water tank or in the water storage area of the toilet bowl will also flow out, so freezing will gradually progress.

It is true.

Next, the present invention will be explained with reference to the drawings.

Water is supplied to a water tank 1 of a flush toilet via a water supply valve 3 provided in a water supply conduit 2.

A drain valve 4 that closes a drain port 4a is provided at the bottom of the water tank 1, and when the drain port 4a is opened by operating a drain lever 5, water in the water tank 1 flows out into the toilet bowl 7 via a conduit 6. .

The water supply valve 3 is opened and closed depending on the water level in the water tank 1. A lever 8 having one end pivoted to the water supply valve 3 is pivoted 9 on a bracket in the middle, and a float 10 is attached to the other end of the lever 8. Install.

Therefore, when water accumulates in the water tank 1 above a certain water level, the lever 8&''X swings around the shaft support 9 to close the water supply valve 3.

The drain lever 5 is provided on the outside of the water tank 1,
The drain lever 5 is connected to the drain valve 4 through the bending lever 11 and the chain 12 at its tip.

The above configuration is the same as that used in general flush toilets.

A low temperature opening valve 13 is provided in the water supply conduit 2 and opens at low temperatures to allow water in the water supply conduit 2 to flow out into the water taffeta 1.

Note that the low-temperature opening valve 13 opens when the water supply pipe 2 is at a temperature on the verge of freezing, and therefore prevents the water supply pipe 2 from freezing.

As shown in FIG. 2, the low-temperature opening valve 13 has an inlet 15 of a case 14 communicating with the water supply conduit 2, and an outlet 16 and a valve body 17 for closing the outlet.

The valve body 17 is formed so that its central shaft portion 17a contracts when the temperature is low, and as shown in FIG. It contains a jelly-like substance through it.

The shaft 19 is inserted through the upper end wall of the cylinder 17b, and its upper end is fixed by a stopper 20.

Further, the valve body 17 is a spring 17c provided inside the case 14.
Therefore, when the temperature is low, the wax 1
8 contracts, the shaft 19 enters into the cylinder 17b, and the length of the central shaft portion 17a of the valve body 17 becomes shorter, so that the valve body 17 opens the outflow port 16.

When the low-temperature opening valve 13 opens and the water level in the water tank 1 reaches a certain level above normal, the water in the water tank 1 is discharged.The opening/closing mechanism of the drain valve 4 for this purpose will be explained.

One end of an open pipe 21 is pivotally supported at the lower part of the side wall of the water tank 1, and the other end is bent upward and connected to the drain valve 4 via a chain 22 from the tip.

The open link 210 is connected to a float 24 via a chain 23 near its base, and the float 24 moves up and down along a constant trajectory by a guide device in which a guide pin 24a provided on the float 24 is guided by a guide means 25.

A pin 26 protrudes from the side of the float 24, and a claw piece 27 that engages with the pin 3 is swingably pivoted to a bracket 28 fixed to the water tank 1.

The claw piece 27 has a floating portion 27a protruding from the opposite side of the shaft attachment portion, and the shaft attachment position of the claw piece 27 is provided on the vertical line of the pin 26.

A stopper 29 is provided on the claw piece 27 so that the claw piece 27 does not rotate any further after the claw piece 27 is rotated to a position where it can engage with the pin 26 due to the weight of the floating portion 27a.

Therefore, under normal conditions, the stopper 29 is in contact with the bracket 28 so that the claw piece 27 can engage with the pin 26.

However, when the water level in the water tank 1 becomes higher than normal, buoyancy acts on the floating portion 27a, causing the claw piece 27 to rotate counterclockwise.

In other words, when the water level reaches a certain position above normal, the claw piece 27
Set it so that it deviates from P/26.

Therefore, at a water level higher than normal, the float 24 sinks in the water and a large buoyant force acts on it, so the claw pieces 24
7 disengages from the pin 26, the release link 21 is tilted upward and the drain valve 4 is suddenly pulled up via the chain 22, so that all the water in the water tank 1 is drained. .

In addition, in the above explanation, the pin 26 provided on the float 24 is connected to the claw piece 2.
7 to prevent the float 24 from rising, but the claw piece 2
7 is replaced by a locking plate having an L-shaped guide groove, and by swinging the locking plate according to the water level, the float 24 is moved through the pin 26 that moves within the guide groove. It is also possible to control the rise.

The structure of the present invention is as described above, and in a normal temperature state, the drain valve 4 can be opened by operating the drain lever 5, as in the case of a normal flush toilet.

When the temperature is low, the wax 18 in the low temperature opening valve 13
Since the volume of the valve body decreases and the length of the central shaft portion 17a of the valve body becomes shorter, the outlet 16 is opened and water is gradually supplied into the water mentor 1.

In this water supply state, when the outside temperature is close to 0°C, the low-temperature opening valve 13 opens and a small amount of water flows, and then the slightly warm water newly flowing in from the water supply pipe 2 closes the low-temperature opening valve. , the amount of water flowing out of the low-temperature opening valve is repeated in small amounts.

However, if the outside temperature is below -10℃,
When the low-temperature opening valve opens, the temperature of the water newly flowing into the water supply pipe 2 is also low, so the low-temperature opening valve 13 remains open for a long time, and the water level in the water tank 1 quickly rises.

When water is being supplied, the claw 27 engages with the pin 26 of the float 24, so the float 24 simply sinks into the water.

However, if the water level in the water tank 1 rises further, the floating part 27
a rises, the claw piece 27 swings counterclockwise, and the engagement between the claw piece 27 and the pin 26 is disengaged, and the buoyancy of the float 24 causes the opening link 21 to swing around the shaft support, thereby opening the drain valve 4. is rapidly raised to cause the water in the water taffeta 1 to flow out into the toilet bowl 7.

After this, the drain valve 4 closes the drain port due to its own weight, and the float 1
0 has fallen, the water supply valve 3 is opened and the water mentor 1 is filled with water.

When the water level reaches a normal predetermined position, the float 10 floats up and the water supply valve 3 closes.

When the temperature is further low, the low temperature opening valve 13 opens and the water in the water tank 1 is discharged in the same manner as described above.

As described above, in the present invention, when the temperature is low in winter, the low-temperature opening valve automatically opens to supply water into the water tank 1, and when the water level rises to a certain level, the drain port 4a automatically opens to supply water into the water tank 1. The water can be drained and replaced, and the flush toilet will not become unusable due to freezing.

In particular, since all the water in the water tank 1 is flushed away, even a little bit of freezing can be washed away, which is preferable in terms of preventing freezing.

[Brief explanation of drawings]

FIG. 1 is an overall schematic diagram of the flush toilet of the present invention, FIG. 2 is a sectional view of a low-temperature opening valve used therein, and FIG. 3 is an enlarged sectional view of the valve body shaft of the low-temperature opening valve. 1...Water tank, 3...Water valve, 4.
...Drain valve, 10...Float, 13...
...Low temperature opening valve, 24...Float, 26...
...Pin, 27...Claw piece, 27a...
・Ukibe.

Claims (1)

[Claims] 1. In a flush toilet in which the water supply valve in the water tank of the flush toilet is opened and closed in accordance with the rise and fall of the first float, and the drain valve that closes the drain port of the water tank is opened and closed by a lever,
A low-temperature opening valve that opens at low temperatures and drains water into the water tank is provided in communication with the water supply source, one end of the swinging link is pivotally supported in the water tank, and a chain is placed in the middle of the swinging motion. A second float is connected through the link, and a guide device is provided to guide the raising and lowering of the second float, and the other end of the swinging link is connected to a discharge valve through a chain, so that the water level in the water tank is higher than normal. A locking means is provided between the second float and the water tank to prevent the second float from rising higher than normal until it reaches a certain position. An anti-freeze device for flush toilets, which is characterized by raising the water level above a certain level and opening an outlet to replace the water in the water tank.