JPS6346531Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a low tank for flushing toilet bowls that prevents water stored in the low tank from freezing.

In winter, in cold regions, the water stored in the low tank for flushing toilets and the water in the trap freezes.
Not only does it become impossible to use the low tank, but if the freezing becomes severe, the expansion phenomenon that occurs when water freezes may even damage the low tank, which is made of ceramic. In order to avoid such a situation, conventionally, there are two types of low tanks for toilets used in cold regions: a drain type and a flow type.

As shown in Figure 1, the water draining method is to operate the drain handle 1 to drain the water in the low tank 2, bury the trap 3 in an underground non-freeze zone A, and protect it with geothermal heat. Furthermore, the water in the pipe 4 leading to the low tank 2 is discharged from the drain port 6 into the freeze-free zone A by opening the drain valve 5. In such a water draining method, the water in the low tank 2 becomes empty after water is drained, so not only can the low tank 2 become unusable, but also the water draining operation part 5a for draining water into the ground must be connected to the ground. A drain valve 5 connected to a three-way valve 5b buried therein
It was necessary to install it separately, which had the disadvantage of increasing construction costs. On the other hand, the flow system, as shown in FIG. This prevents the water in the low tank 7 and the trap 11 from freezing by constantly replacing the stored water. With this type of flow system, there is a risk of freezing in extremely cold regions depending on the amount of flowing water and the construction status of the insulation material, and there is always a risk of freezing from the water supply pipe 9 to the low tank 7.
It is necessary to discharge the water to the toilet bowl 10 through the process, which has the disadvantage of wasting water. Furthermore, the common drawbacks of both the drainage method and the flow method are:
Because the prediction that the temperature would be below the freezing temperature of water was incorrect, there was a risk that the water in the low tank would be uneconomically discharged, or that the water would freeze. Furthermore, the frozen state occurs in most cases late at night or when the toilet is not in use when you are away, so at such times it is necessary to drain the water or open the flow diverter valve as described above. The thing is,
It is not only extremely difficult, but even impossible.

The present invention was developed in view of the above-mentioned problems, and is a low tank for flushing toilets that can prevent the water in the low tank and the accumulated water in the trap from freezing, and can economically and effectively drain water to prevent freezing. The purpose is to provide

The present invention will be described in detail below based on drawings showing embodiments thereof.

As shown in FIG. 3, a float valve 14 is sealed in a hole 13 drilled in the center of the bottom wall 12' of the water tank 12 with a packing 15 and screwed and fixed with a nut 16. The float valve 14 has a drainage channel 17.
is prominent. An L-shaped conduit 18 is connected to the drainage channel 17, and a drain operation member 19 is screwed and fixed to the upper end 18' of the conduit 18. The water draining member 19 is positioned near the side wall of the water tank 12 and substantially near the water surface in the water, with its inflow hole 20 facing the water surface. Furthermore, the water drain operation member 19 is attached to the side wall 22 of the water tank 12 so as not to move.
It is supported via a support fitting 25 fixed by a screw 24 passed through a hole 23 drilled above. The lower end 25' of the support fitting 25 is bent at a right angle, has a hole (not shown), and is fitted into the threaded part 26 at the upper end of the water draining member 19 and fixed with a nut 27. be. Next, the internal configuration of the water draining member 19 connected to the valve hole 28 of the float valve 14 via the conduit 18 will be described.

As shown in FIGS. 4 and 5, the water draining member 19 has a penetrating interior, and has an inlet hole 20 at its upper end and an outlet hole 29 at its lower end. The inflow chamber 30 is provided with wax sealed therein so that a temperature sensing section 31 can move up and down. The wax sealed in the temperature sensing section 31 is a substance that expands and contracts in response to changes in water temperature; it expands when the water temperature rises and contracts when it falls. Therefore, as long as the material has such properties, it is not limited to the above-mentioned wax, and other materials such as shape memory alloys may be used. The temperature sensing section 31 is urged downward by a spring 32. The locking portion 33 serves as a stopper against downward movement of the temperature sensing portion 31. A piston 34 is provided at the tip of the temperature sensing section 31. A threaded portion 34' cut at the tip of the piston 34 is screwed into a threaded portion 36' cut at the upper center of the valve body 36. The piston 34 is capable of moving up and down by the expansion and contraction of the wax sealed in the temperature sensing part 31. Below the valve body 36 is a valve seat 3.
7 is provided. A valve hole 38 is bored in the center of the valve seat 37, and the valve hole 38 is connected to the discharge hole 29.
It leads to Further, a spring 35 is provided between the valve body 36 and the valve seat 37, and the spring 35 urges the valve body 36 upward.
Note that the lower spring 35 has a stronger urging force than the upper spring 32. The male member 39 and female member 40 having the above-described internal configuration,
The male member 39 is partially inserted into the female member 40, and the holes 4 formed in the side surfaces of the male member 39 and the female member 40 are opened.
1 by inserting a pin 42 into them and fixing them to each other. Drainage operation member 19 having the above configuration
When the wax sealed in the temperature sensing part 31 contracts, the piston 34 retreats upward and the valve body 36 retreats due to the bias of the spring 35.
As shown in FIG. 4, the valve hole 38 opens and enters the open state. Conversely, when the wax expands, the piston 34 moves forward and the valve body 36 moves forward against the bias of the spring 35, closing the valve hole 38 and bringing the valve into the closed state, as shown in FIG. Become. Despite being in this state, when the wax further expands, the temperature sensing portion 31 presses against the spring 32 and extends upward.

Next, the low tank 43 for toilet bowl cleaning according to the present invention
(hereinafter simply referred to as the low tank 43) will be explained based on FIG. 3.

When the outside temperature becomes cold and the temperature of the water stored in the low tank 43 drops below the set temperature of the water drain operation member 19 (2° C. in this embodiment), the water drain operation member 19 is located inside the water drain operation member 19. The wax contracts and the valve becomes open. At this time, water in the low tank 43 that has been flowing in through the inlet hole 20 of the water draining member 19 flows through the conduit 18 and is discharged into the toilet bowl (not shown) via the valve hole 28 of the float valve body 14. . Then, the water level in the low tank 43 decreases, so the floating balls 44 floating on the water surface descend, the ball tap 45 becomes open, and water is supplied from the water spout 46. Since the temperature of the water supplied at this time is higher than the temperature of the water that has been stored in the low tank 43 from the beginning, the water temperature in the low tank 43 after water supply, especially the water temperature near the water surface, rises. When the increased water temperature exceeds the set temperature of the water drain operation member 19, the water drain operation member 1
The wax inside 9 expands, and the water draining member 19 enters the valve-closed state. Therefore, the toilet bowl (not shown)
Drainage to the area will be stopped. In this way, the temperature of the water in the low tank 43 is adjusted to the set temperature (2°C).
When the temperature is below, the water is drained, and when it exceeds the set temperature (2°C), the water is stopped.

As explained in detail above, according to the present invention, before the water temperature in the aquarium reaches the freezing point, the temperature-sensing section is activated, the water drain operation member is opened, and the water in the aquarium is discharged into the toilet bowl. It is possible to prevent the water in the aquarium and the accumulated water in the trap from freezing. Furthermore, when the temperature of the water in the tank rises due to water being supplied into the tank, drainage is automatically stopped, so water is not wasted and water can be used economically and effectively. Furthermore, it is not only convenient because it can automatically drain and stop draining according to changes in the temperature of the water in the tank.
Effects such as being able to prevent freezing can be obtained even late at night or when the person is absent.

[Brief explanation of drawings]

Fig. 1 is a side view showing a conventional water drainage system, Fig. 2 is a side view showing a conventional flow system, Fig. 3 is a front sectional view showing an embodiment of the present invention, and Fig. 4 is an open view of the water drainage operation member. FIG. 5 is a front sectional view showing the valve state, and FIG. 5 is a front sectional view showing the water drain operation member in the valve closed state. 12...Aquarium, 14...Float valve, 18...
Conduit, 19...Drain operation member, 28...Valve hole, 3
1...Temperature sensing part, 39...Low tank for toilet bowl cleaning.

Claims (1)

[Scope of utility model registration request] The water stored in the tank expands and expands according to temperature changes.
A water drain operating member that opens and closes the valve in response to the operation of a temperature-sensitive portion filled with a shrinkable substance is provided at a desired position in the water tank, and a valve hole of a float valve provided at the bottom of the water tank and the water drain operating member are provided. are connected via a conduit, and when the water temperature in the water tank becomes equal to or lower than the set temperature of the water drain operation member, the water drain operation member is opened, and the water in the water tank is connected to the water drain operation member, The water is discharged to the toilet bowl through the conduit and the float valve, and when the water temperature in the water tank exceeds the set temperature of the water drain operation member due to the water supply from the ball tap, the water drain operation member is closed and the water is discharged to the toilet bowl. A low tank for flushing toilets, which is characterized by the ability to stop.