JPS5842535Y2 - Faucet for cold regions - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a faucet for cold regions with a check valve.

In this specification, faucets include all valves that adjust the flow rate (including zero flow rate) of liquids such as water and hot water.

However, in the following description, water or hot water will be used as an example of the liquid whose flow rate is regulated by a faucet in order to give more specificity to the description.

In cold regions, water in faucets freezes at night, causing
If iron water blocks the faucet passage, the faucet will not be able to be used immediately the next morning, so to prevent this from happening, close the main water tap before going to bed and drain the water from each faucet. Is going.

Therefore, for faucets whose structure does not allow water to be drained from the faucet spout, a separate drain valve is provided, and water is drained by opening the drain valve.

A check valve that is normally closed by a biasing means such as a spring is provided in the faucet, and the water passage is divided into two, upstream and downstream, by the check valve. If the faucet is a normally closed check valve, and the water in the upstream passage, but also the water in the downstream passage cannot be drained from the spout due to its structure, a drain valve corresponding to each passage is installed. was set up separately.

However, if two or more than three separate drain valves are installed, there is a drawback that each drain valve must be opened separately when draining water, which requires a great deal of time and effort. There is a drawback that the manufacturing cost increases due to an increase in the number of plugs.

In addition, with conventional faucets, water flows out parallel to the axis when the drain faucet is opened, so there is a drawback that your hand always leaks when draining the water. If the liquid was boiling water, there was a drawback that it not only leaked, but also caused burns.

This invention was made to eliminate the above-mentioned drawbacks.

This invention will be explained below based on embodiments shown in the drawings.

A water introduction pipe 2 is connected to the right side of a symmetrical hot water mixing faucet 1, and a hot water introduction pipe 3 is connected to the left side, and a water passage 4 communicating with the water introduction pipe 2 is formed in the faucet 1. The passage 4 is divided into an upstream passage 4a and a downstream passage 4b by a partition 5.

A communication hole 6 is formed in the partition wall 5, and a distal end valve seat 10 of a check valve 9 screwed into a screw hole 8 in a thick outer wall 7 of the faucet 1 is inserted into the communication hole 6 via an O-ring 11. It is filled with water.

The valve seat 10 is normally closed by the valve element 13, which is always urged toward the right side in FIG. is pushed to the left, and the water flows through the inlet 14 of the check valve 9.
．． It passes through the valve seat 10 and flows into the downstream passage 4b.

Guide hole 1 connected to the upward outlet 15 of the downstream passage 4b
A valve seat 17 having a diameter of 6 is housed in the faucet 1, and a disc-shaped valve body 19 having a hot water mixing recess 18 is brought into close contact with the upper surface of the valve seat 17. By rotating or moving back and forth,
It is possible to adjust the mixing ratio of hot water and water, and to cut off the supply of hot water, water, or both. A switching button 21 that is movable in a direction perpendicular to the drawing allows the water to be supplied to the water spout 22 side or to the shower (not shown) side.

As is clear from the above, since the water must rise once to the mixing recess 18, the water in the downstream passage 4b below the horizontal imaginary plane including the upper surface of the valve seat 17 does not flow from the spout 22, etc. It cannot be removed.

A first through hole 23 and a second through hole 24 having a common axis are laterally bored in the partition wall 5 and the thick outer wall 7.

The second through hole 24 is composed of a non-threaded hole portion 24 a having a diameter larger than the diameter of the first through hole 23 and a screw hole portion 24 b having an inner diameter larger than the diameter of the non-threaded hole portion 24 a. There is.

A discharge hole 25 is formed in the thick outer wall 7 from below to the screw hole portion 24 .

The drain plug 26 fitted into the first and second through holes 23 and 24 has, from the right side, a knob portion 26a and a male screw portion 26.
b, is composed of a large diameter portion 26C and a small diameter portion 26d, and is fitted into the second and first through holes 24.23 when the male threaded portion 26b is completely screwed into the threaded hole portion 24b. ,
There are grooves 27 and 28 in each of the large and small diameter parts 26C and 26d.
is formed, and an O-ring 29.30 that closes the through hole 24.23 is fitted into the groove 27.28.

Note that the hot water passage on the left side of the faucet 1 has exactly the same structure as the water passage.

In the above, in order to drain the water and hot water from the faucet 1 before going to bed, first close the main water tap (not shown), and then unscrew the drain faucet 26 to partially drain it.

Then, the large diameter part 26C of the drain plug 26 comes out of the non-threaded hole part 24a of the second through hole 24, and the small diameter part 26d
passes through the first through hole 23, and the downstream passage 4b passes through the first through hole 23. Since it communicates with the outside through the upstream passage 4a, the second through hole 24, and the discharge hole 25, not only the water in the downstream passage 4b but also the water in the upstream passage 4a flows through the discharge hole 25.
It can be removed through.

In addition, since the discharge hole 25 faces downward, there is no chance of getting your hands wet with the discharged water.

In addition, water remains in the upstream and downstream passages 4 a and 4 b below the lower end of the through hole 23 , 24 , but even if the residual water freezes, there is no problem in using the faucet 1 the next morning. Nor.

Once the water has been drained, the drain plug 26 may be closed by screwing it back on.

Hot water can also be removed using the same procedure.

In this embodiment, the water is drained by pulling out the drain valve, but a drain valve with a structure in which the water is drained by pushing the drain valve (move it to the left side in Figure 1) may also be used. Of course, it is also possible to use

As described above, according to this invention, water can be drained from the upstream and downstream base passages all at once using one drain plug, so the water draining work is extremely simple.
Since only one stopper is used, manufacturing costs can be reduced.

Furthermore, since the water is discharged through the downward discharge hole, there is no need to wet your hands with the discharged water, and therefore, there is no risk of getting burned when you drain the hot water.

[Brief explanation of the drawing]

FIG. 1 is a half-cut sectional view showing an embodiment of this invention. 1...Hot water mixing faucet, 4...Water passage,
4a... Upstream passage, 4b... Downstream passage, 5... Partition wall, 7... Thick wall outer wall,
9... Check valve, 23... First through hole,
24...Second through hole, 25...Drain hole, 26...Drain plug.

Claims (1)

[Scope of utility model registration request] In a faucet with a check valve, in which a liquid passage is divided into an upstream passage and a downstream passage by a partition to which a normally closed check valve is attached, a thick outer wall of the partition and the upstream passage, A first through hole and a second through hole having a common axis are horizontally bored, a discharge hole is formed in the thick outer wall and communicates with the second through hole from below, and the first through hole and the second through hole are formed in the thick outer wall. An integral plug is fitted into the two through holes, and when the iron frame is opened, the downstream passage communicates with the outside through the first through hole, the upstream passage, the second through hole, and the discharge hole. A faucet for cold regions.