JP2857864B2 - Antifreeze faucet pillar - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates generally to anti-freeze water faucets, and more particularly, to anti-freeze water faucets having an air intake system and deicing means.

[0002]

In cold regions, water pipes are buried in the ground below the freezing depth in order to avoid freezing, but the branch pipes of each house connected to the water pipes rise up. It is a tube that leads to each room. Therefore, if you do not supply water for a certain time in each house in winter,
Water above the freezing depth of the branch pipe may freeze. In order to avoid such a situation, in cold regions, antifreeze taps that can discharge water in pipes when not in use are used, and various types of antifreeze taps are commercially available. . However, in the conventional antifreeze water faucet, the antifreeze water faucet must be drained, and the faucet must be opened to allow air to enter the pipe.
It was difficult to drain the water in the pipe.

[0003] In order to solve such a drawback of the conventional antifreeze water faucet, an antifreeze water faucet provided with an intake device has been developed. However, the conventional antifreeze faucet provided with the intake device has the following inconvenience because the intake passage is provided inside the spindle. First, it is difficult to remove foreign matter such as sand when foreign matter such as sand enters the intake passage inside the spindle and causes clogging. Secondly, when replacing a spindle that has clogged the intake passage, all parts connected to the spindle must be disassembled, and the repair becomes large. Third, if you try to replace a set of parts connected to the spindle,
Expensive. In addition, if the water in the antifreeze water tap is frozen by any chance, there is a problem that it takes a lot of time and labor to defrost the water.

[0004] Accordingly, an object of the present invention is to provide an antifreeze water faucet provided with a suction device having a simple structure and easy to clean and replace. Another object of the present invention is to provide an antifreeze water faucet column further provided with a defrosting means for defrosting during freezing.

[0005]

According to the present invention, there is provided, in accordance with the present invention, a lower body to which a water pipe is connected and to which a drain valve is mounted, a pumping pipe screwed to the lower body, and a water pump. It has an upper body screwed to the pipe and provided with a water supply port, and an outer pipe covering the pumping pipe and the upper body, and a piston housed in the lower body is passed through a middle shaft housed in the pumping pipe. When the spindle is raised, communication between the water pipe and the pumping pipe and communication between the water pipe and the pumping pipe and the drain valve are interrupted, and the spindle is lowered. Then, the communication between the water pipe and the pumping pipe is cut off, and the intake port is provided at a position higher than the water supply port of the upper main body in the antifreeze water cock column configured so that the pumping pipe and the drain valve communicate with each other. With through holes When the air device is attached and the spindle is raised, the water pipe and the water supply port are connected and the communication between the water pipe and the intake hole is cut off. When the spindle is lowered, the reduced diameter portion of the spindle and the inner wall of the upper body are moved. Is provided so that the pumping pipe and the intake hole communicate with each other via a space between the water free pipe and the intake port.

[0006] Preferably, a water stopping body that closes the intake hole when water pressure is applied is accommodated in the intake hole of the intake device.

[0007] Preferably, the antifreeze faucet pillar of the present invention further includes an energizing cable disposed between the pumping pipe and the outer pipe and having crimp terminals at both ends.

[0008]

Next, an embodiment of the present invention will be described in detail with reference to the drawings. 1 and 2, an antifreeze water tap according to the present invention generally designated by reference numeral 10 includes a lower body 12, a pumping pipe 30 screwed to an upper end of the lower body 12, and an upper end of the pumping pipe 30. The screw-joined upper body 40, the pumping pipe 30 and the upper body 40
And an outer tube 60 for covering the same. A space between the pumping pipe 30 and the outer pipe 60 is filled with a heat insulating material (not shown). 1 and 2, the lower body 12
Is formed from two parts, an upper half part 12a and a lower half part 12b, but may be formed as an integral part. The outer tube 60 is also formed of two parts, an upper half part 60a and a lower half part 60b, in order to facilitate the assembly of the antifreeze water faucet pillar 10.

On one side of the lower body 12, a water pipe connection portion 14 for connecting to a water pipe (not shown) is provided. The water stop valve 16 is attached by a valve stop pin 16a. The other side of the lower body 12 has a water pump 30
A drain valve 18 for discharging water from the inside is provided.
The drain valve 18 has a drain valve main body 18a including a horizontal portion having one end screwed to the lower main body 12, and a vertical portion extending upward to communicate with the horizontal portion and having an open upper end. A drain valve cap 18b is placed over the opening of the vertical portion of the drain valve body 18a, and a drain valve ball 18c is accommodated in the vertical portion of the drain valve body 18a. The wall of the vertical portion of the drain valve main body 18a is tapered so as to expand upward so that the drain valve ball 18c is seated in the vertical portion when water is supplied as shown in FIG. An O-ring 18 is provided on the inner wall at the base of the vertical portion.
d is attached.

A piston 20 is provided in the lower body 12.
Is housed. The piston 20 has a vertical hole 20a extending in the longitudinal direction and a lower portion of the piston 20.
0a, and a lateral hole 20b extending laterally so as to communicate with Oa. The piston 20 has an upper part 20c and a lower part 20c.
The O-rings 22 are mounted directly above and below the horizontal hole 20b of d, respectively, and the central portion 20e of the piston 20 is shaped so as to have a smaller diameter. With such a configuration, at the time of supplying water as shown in FIG.
And the communication between the water pipe fitting 14 and the water pump 30 and the drain valve 18 is cut off. On the other hand, at the time of drainage as shown in FIG. 2, communication between the water pipe mounting portion 14 and the pumping pipe 30 is cut off, and the pumping pipe 30 and the drain valve 18 are passed through the vertical hole 20 a and the horizontal hole 20 b of the piston 20. Communicates with

A female screw portion 12c provided at the upper end of the lower main body 12 is provided with a male screw portion 30 provided at the lower end of the pumping pipe 30.
a is screwed. A middle shaft 32 is housed in the pumping pipe 30, and the lower end of the middle shaft 32 is attached to the upper end of the piston 20 via the idle shaft 34.

A female screw part 40a provided at the lower end of the upper main body 40 is provided with a male screw part 30 provided at the upper end of the pumping pipe 30.
b is screwed. A water supply port 44 is attached to one side of the upper main body 40 via a fitting 42. In the upper body 40, a spindle 48 having a handle 46 attached to the upper end is housed.
A spindle holder 50 is screwed to the upper end of the zero. The male screw portion 48a provided on the spindle 48
It is screwed into a through hole of the spindle retainer 50 provided with the female screw portion 50a, so that the handle 46
By rotating the (spindle 48), the spindle 48 can be moved up and down. The central portion 48b of the lower half portion of the spindle 48 is formed so as to have a diameter smaller than the inner diameter of the upper main body 40, and O-rings 52 are mounted on the upper and lower portions of the central portion 48b, respectively. The lower end of the spindle 48 is connected to the upper end of the middle shaft 32 via a spindle joint 54.

An intake device 56 is mounted on the other side of the upper body 40 at a position higher than the water supply port 44. The intake device 56 has a through hole serving as an intake hole 56a, and is formed of a cylindrical member having an external thread cut on the outer surface. The air intake device 56 is screwed into the air intake device mounting portion 40b of the upper body 40 having a female thread.
It is attached to the upper body 40. With such a configuration,
At the time of water supply as shown in FIG. 1 and FIG.
0 and the water supply port 44 communicate with each other.
Communication with is interrupted. On the other hand, at the time of drainage as shown in FIGS. 2 and 4, the pumping pipe 30 and the intake hole 56 a are connected via the space between the central portion 48 b of the lower half of the spindle 48 and the inner wall of the upper body 40. Communicate.

The operation of the antifreeze tap 10 of the present invention having the above-described structure will be described. When water is to be supplied, the handle 46 is rotated counterclockwise. Then
The spindle 48 is raised, and accordingly, the middle shaft 32
And the piston 20 also rises, as shown in FIG.
The water pipe 30 and the water supply port 44 communicate with each other to cut off the communication between the water pipe 30 and the suction hole 56a, and at the same time, the water pipe extends through the space between the inner wall of the lower body 12 and the central portion 20e of the piston 20. And the water pump 30 communicate with each other, whereby water is supplied from the water supply port 44. At the time of water supply, the communication between the water pipe and the water pump 30 and the drain valve 18 is shut off. On the other hand, if you want to drain,
The handle 46 is rotated clockwise. Then, the spindle 48 is lowered, and accordingly, the middle shaft 32 and the piston 20 are also lowered, as shown in FIG. 2, between the central portion 48 b of the lower half of the spindle 48 and the inner wall of the upper body 40. At the same time, the communication between the water supply pipe and the water supply pipe 30 is cut off, and the communication between the water pipe and the water supply pipe 30 is cut off, and the water supply pipe 30 and the drain valve 18 are connected through the vertical hole 20a and the horizontal hole 20b of the piston 20. And communicate with each other,
The water in the pumping pipe 30 is drained from the drain valve 18.

The present invention is not limited to the above embodiments of the invention, and various modifications can be made within the scope of the invention described in the claims. It goes without saying that it is included in.

For example, in the above embodiment, the intake device 56 is constituted by a cylindrical member having a through hole serving as an intake hole 56a. In this configuration, a hose (not shown) or the like is connected to the water supply port 44 and the hose is connected to the intake hole 5.
If the antifreeze tap 10 is drained while being lifted to a position higher than the height of 6a, a part of the drainage may flow into the intake hole 56a. Therefore, in order to avoid such a situation, as shown in FIG. 1 to FIG.
It is preferable that the intake port 56a be closed when a water pressure is applied to 6b. More specifically, referring to FIG. 5, the intake hole 56a of the intake device 56 has a reduced diameter portion 56c provided outside the intake hole 56a and a water stopping body 56b provided inside the intake hole 56a. Large diameter part 56d
And a reduced diameter portion 56 of the large diameter portion 56d.
An O-ring 56e is mounted at a location adjacent to c. The large diameter portion 56d has a diameter such that the water stopping body 56b is accommodated with play. With the above configuration, the antifreeze water faucet column 10 is drained while the hose connected to the water supply port 44 is raised to a position higher than the height of the intake hole 56a. 56a
, Water pressure is applied to the water stopping body 56b, whereby the water stopping body 56b moves to the left in FIG. 5, abuts on the O-ring 56e, and the intake hole 56a is closed. In addition,
Since the water stopping body 56b is accommodated in the large diameter portion 56d with play, the water stopping body 56b is easily moved, and the suction is effectively performed when the water stopping body 56b is not subjected to the water pressure. In FIGS. 1 to 5, the water stopping body 56b is a ball, but may have another suitable form (for example, a cylindrical body having a conical tip) suitable for closing the intake hole 56a. Good. 3 and 4
As shown best in FIG. 2, the lower portion 40c inside the intake device mounting portion 40b of the upper body 40 extends upward to the approximate center line of the intake hole 56a.
b is prevented from closing the hole 40d of the intake device mounting portion 40b.

Further, the antifreeze water faucet 10 of the present invention is preferably further provided with a deicing means for thawing the water in the pumping pipe in the event that the water in the antifreeze water faucet is frozen. . The thawing means is provided between the pumping pipe 30 and the outer pipe 60 and includes an energizing cable 70 having crimp terminals 70a and 70b at both ends. At the time of thawing, the handle 46 etc.
0, and as shown in FIG. 6, one terminal 72a of a commercially available electric
a, and the other terminal 72b is brought into contact with the water supply port 44 or the like, thereby passing electricity through the power supply cable 70 and thawing the water in the pumping pipe 30 by heat transfer.

[0018]

According to the present invention, as long as the handle is turned, communication between the water pipe and the suction pipe is interrupted at the same time as communication between the water pipe and the suction pipe is interrupted and communication between the water pipe and the drain valve is established. In addition, the draining operation can be performed simply and reliably. Even if the intake hole is clogged, it is sufficient to replace only the intake device. Furthermore, even if the water in the antifreeze tap is frozen, it can be easily thawed.

[Brief description of the drawings]

FIG. 1 is an overall sectional view showing an antifreeze faucet pillar of the present invention in a water supply state.

FIG. 2 is an overall sectional view showing the antifreeze water tap according to the present invention in a drained state.

FIG. 3 is an enlarged cross-sectional view showing an upper portion of the antifreeze water tap according to the present invention in a water supply state.

FIG. 4 is an enlarged sectional view showing an upper portion of the antifreeze water tap according to the present invention in a drained state.

FIG. 5 is an enlarged cross-sectional view showing an intake device attached to the antifreeze water tap according to the present invention.

FIG. 6 is a schematic view showing a defrosting operation by a defrosting means attached to the antifreeze water tap according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Antifreeze water tap column 12 Lower main body 18 Drain valve 30 Pumping pipe 40 Upper main body 44 Water supply port 48 Spindle 56 Intake device 56a Intake hole 60 Exterior pipe 70 Power supply cable

Claims (3)

(57) [Claims] 1. A lower body to which a water pipe is connected and to which a drain valve is attached, a pumping pipe screwed to the lower body, an upper body screwed to the pumping pipe to which a water supply port is attached, An outer tube covering the tube and the upper body,
A piston housed in the lower body is connected to a spindle housed in the upper body via a middle shaft housed in the water pipe, and when the spindle is raised,
When the water pipe and the water pipe communicate with each other and the communication between the water pipe and the water pipe and the drain valve are cut off, and the spindle is lowered,
In an antifreeze faucet column in which the communication between the water pipe and the water pipe is cut off and the water pipe and the drain valve communicate with each other, at a position higher than the water supply port of the upper main body, a penetration that serves as an intake hole is provided. When an intake device having holes is attached, when the spindle is raised, the pumping pipe communicates with the water supply port and the communication between the pumping pipe and the intake port is cut off. When the spindle is lowered, the reduced diameter portion of the spindle and the upper portion are removed. An antifreeze faucet pillar, wherein the pump pipe and the intake hole are configured to communicate with each other via a space between the inner wall of the main body. 2. The antifreeze tap according to claim 1, wherein a water shutoff body that closes the intake hole when water pressure is applied is accommodated in the intake hole. 3. The antifreeze tap according to claim 1, further comprising an energizing cable disposed between the pumping pipe and the outer pipe and having crimp terminals at both ends.