JPH0336605Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has a taper at the bottom of the stopper rod that is screwed into the faucet body.
The present invention relates to an improvement in a water faucet equipped with an antifreeze device that is provided with a second valve mechanism that opens when the temperature drops.

In order to prevent water faucets from freezing in winter, a small-diameter second valve mechanism that is controlled by a thermoelement and is kept closed at room temperature and opened when the temperature drops is screwed onto the faucet body. When the inside of the faucet body approaches freezing temperature due to a drop in temperature, this second valve mechanism opens when the packing at the lower end of the stopper rod closes the valve opening of the faucet body. A water faucet with an antifreeze device has been developed in which a valve is used to flow a small amount of water to the secondary side to prevent a drop in temperature within the faucet body.

However, this type of water faucet prevents the water faucet itself from dropping to freezing temperature due to a drop in temperature by letting the water flow out little by little and using the amount of heat held by the water (supplied from the faucet). The temperature of the water used is usually around 4 degrees Celsius), so the second valve mechanism opens within the range of 0 degrees Celsius to 3 degrees Celsius in order to avoid wasting water due to outflow of more than necessary water. It is necessary to adjust the valve opening temperature so that the condition is met.

By the way, in the case of the conventional means, this adjustment of the valve opening temperature was performed by adjusting the faucet main body 1 as shown in FIG.
The piston 30 of the thermoelement 3 of the second valve mechanism a is incorporated into the plug part 2a of the plug rod 2 screwed into the
The displacement of the abutting surface w that abuts against the tip of the thermoelement 3 is adjusted by rotating the screw y on which the abutting surface w is formed, so that the abutting surface w moves forward and backward in the direction in which the piston 30 moves in and out of the main body 31 of the thermoelement 3. As shown in FIG.
is screwed onto the plug part 2a, and the handle part 2b
By rotating the piston 30 of the thermo-element 3 of the second valve mechanism a incorporated in the plug part 2a with respect to the plug part 2a, the contact surface w of the piston 30 is rotated along with the handle part 2b that supports the contact surface w. Thermo element 3
This is done by adjusting the displacement of the piston 30 to move it forward or backward in the operating direction with respect to the main body 31 of the piston 30.

However, in the former case, when turning the screw y to displace the contact surface w, the spring dimension l of the relief spring 40 that pushes the contact surface w toward the main body 31 of the thermoelement 3 changes. However, since the set pressure of the relief spring 40 fluctuates, there is a problem in that it is difficult to adjust the valve opening temperature. (Fig.) to turn the stopper rod 2,
When controlling the water stop/flow of the water faucet A, there is a problem in that the handle 2b of the tap rod 2 rotates relative to the tap 2a, causing it to become loose.

The present invention has been made in order to solve these problems occurring in the conventional means, and it is possible to adjust the valve opening temperature of the second valve mechanism incorporated in the plug section at the bottom of the plug rod. A new design that allows for easy operation without changing the spring dimensions of the relief spring or causing loosening when turning the stopper rod to open and close water shutoff and water flow. The purpose is to provide a means.

In the present invention, as a means to achieve this objective, a valve is opened by the temperature-sensitive operation of a thermoelement in the stopper part of the stopper rod that is screwed into the faucet main body to connect the primary side and the secondary side. In a water faucet equipped with an antifreeze device incorporating a second valve mechanism with a small diameter, the valve is fixedly attached to the stopper part of the stopper rod in opposition to the valve installed on the main body side of the thermoelement of the second valve mechanism. A water faucet with an antifreeze device is provided in which a seat is formed separately from a stopper part and screwed together with the stopper part so as to be interchangeable with the stopper part or to move forward and backward in the operating direction of the valve.

Next, an example of implementation will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings as in the previous means are used for components having the same effect.

FIG. 3 is a longitudinal side view of a water faucet A equipped with an anti-freeze device that embodies the present invention, in which 1 is the faucet main body, 2 is a stopper rod that is screwed into the faucet main body 1, and
a is a small-diameter second plug installed in the plug part 2a of the plug rod 2.
The valve mechanism is shown.

The faucet body 1 has a connecting cylinder part 10 connected to a pipe leading to a water faucet on the primary side, a faucet 11 that opens to the outside on the secondary side, and a stopper rod 2 is screwed onto the top side. A plug rod assembly cylinder part 12 is installed, and a partition wall 13 separating the primary side and the secondary side is installed inside.
This is a normal standard product in which a valve port 14 is opened and an annular valve seat 15 is formed on the upper edge of the valve port 14.

The stopper rod 2 is attached to the stopper rod assembly cylindrical portion 12 of the faucet main body 1.
It consists of a plug part 2a that is inserted into the faucet main body 1 to open and close the valve port 14, and a handle part 2b that projects from the plug part 2a to the outside so that the plug part 2a can be rotated from the outside. 2a is formed into a hollow cylindrical shape that opens downward, and has a threaded portion 20 on its outer circumferential surface that is screwed into a threaded portion formed on the inner circumferential surface of the plug rod assembly cylindrical portion 12; A separately formed cylindrical body 21 is integrally connected to the lower end side by screwing. The valve opening 14 inside the faucet main body 1 is attached to the lower surface of the flange formed near the lower end side of the cylindrical body 21.
A packing 22 corresponding to an annular valve seat 15 formed around the valve seat 15 is attached. Moreover, the handle part 2b is
It is formed integrally with the plug part 2a, and has a cavity inside thereof that communicates with the inner cavity of the plug part 2a. A grip 51 for operation is attached to the outer end of the cap 50 which is screwed onto the outer periphery of the stopper rod assembly cylinder 12 and projects outward from the center hole.

The second valve mechanism a, as shown in FIG.
and a valve seat 7 surrounding a small-diameter valve port 70 facing the valve 6. The thermo-element 3 is a normal thermo-element in which a piston 30 moves in and out due to a change in volume due to heat of a temperature-sensitive substance such as wax sealed in its main body 31. The piston 30 moves in and out of the handle 2b. It is inserted into the inner cavity of the cylindrical body 21 which is connected to the lower end of the plug part 2a in a posture facing the internal cavity, and the temperature sensing part 31a of the main body 31 is formed on the peripheral wall of the cylindrical body 21. The main body 3 is arranged adjacent to the communication port 21a.
1 is urged upward by a return spring 32, and the upper end of the piston 30 is pushed downward by a release spring 40 inserted into the handle 2b, and the handle 2 is pushed upward.
b It is assembled to the stopper rod 2 by abutting against the contact surface w of the lower surface of the abutting member 42 which is pressed against the stopper 41 fixed to the inner circumferential surface.

A valve 6 is attached to the bottom of the main body 31 of the thermoelement 3, and a small-diameter valve seat 7 facing the valve 6 is installed at the bottom of the cylindrical body 21 that is integrally connected to the lower part of the stopper 2a. However, the cylindrical body 21 is formed into a separate small-diameter cylindrical shape, and as shown in FIG. A threaded portion 71 is provided, which is screwed into the lower end of the cylindrical body 21 in a water-tight manner. The dimension L from the spring receiver 21b of the return spring 32 formed at the location to the upper end surface 7a of the valve seat 7 is made to vary in length and length. As a result, the pressure that pushes out the piston 30 of the thermoelement 3 due to the temperature drop decreases, and the spring pressure of the return spring 32 pushes up the main body 31, causing the valve 6 provided on the lower surface of the main body 31 to move upward. The temperature at which the valve is opened away from the upper end surface 7 of the valve seat 7 can be adjusted as desired.

As shown in FIG. 6, the valve seat 7 is screwed into the spring support 21b of the return spring 32 when the upward displacement of the valve seat 7 reaches the stroke end. The dimension L from the valve seat 7 to the upper end surface 7a of the valve seat 7 is formed into a plurality of long and short lengths, and by sequentially attaching them interchangeably, the dimension L is changed.
In some cases, the temperature at which the valve is opened is adjusted by the temperature sensing operation of the thermoelement 3.

The embodiment device constructed in this manner operates as follows.

As shown in FIG.
When the temperature of the water faucet A itself and the air in the secondary side of the faucet body 1 decreases due to a drop in temperature, the piston 30 of the thermoelement 3 is closed. As the extrusion pressure decreases, the main body 31 of the thermoelement 3 rises due to the spring pressure of the return spring 32, and the valve 6 attached to the lower surface of the main body 31 moves toward the upper end surface 7 of the small-diameter valve seat 7.
A, the second valve mechanism a opens, and the water on the primary side is regulated to a small amount by the small diameter valve port 70 and flows out to the secondary side, and the temperature of this water decreases. You will be able to control it.

Therefore, the temperature at which the second valve mechanism a opens is the temperature at which the valve seat 7 facing the valve 6 of the second valve mechanism a
is formed separately from the plug portion 2a of the plug rod 2 and is screwed onto the bottom of a cylinder 21 that is integrally connected to the plug portion 2a, so that the valve seat 7 can be rotated. Fifth
Desired adjustment can be made by changing the dimension L shown in the figure. Adjustment of the valve opening temperature by adjusting the displacement of the valve seat 7 does not affect the spring dimension l of the relief spring 40 (relief spring 4
(The spring pressure at 0 is normally set to about 10 times the spring pressure of the return spring 32), and subtle adjustments can be easily made by simply rotating the valve seat 7. In addition, by adjusting the valve opening temperature using the valve seat 7, the handle 2b of the stopper rod 2
Since the plug portion 2a and the plug portion 2a may be formed integrally or integrally, it is possible to prevent loosening during water shutoff/water flow operations.

As explained above, the water faucet with an anti-freeze device according to the present invention has a valve opened by the temperature-sensitive operation of the thermoelement 3 on the stopper part 2a of the stopper rod 2 which is screwed into the main body 1 of the faucet. In a water faucet equipped with an antifreeze device incorporating a small-diameter second valve mechanism a that communicates with A valve seat 7 fixedly attached to the plug part 2a of No. 2 is formed separately from the plug part 2a, and is configured to be screwed together so as to be interchangeable with the plug part 2a or to move forward and backward in the operating direction of the valve 6. Therefore, the opening temperature of the second valve mechanism built into the bottom part of the stopper rod can be adjusted by changing the spring dimensions of the relief spring or by rotating the stopper rod to shut off or allow water to flow. Opening/closing operations can be performed easily without causing loosening.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a conventional means, FIG. 2 is a longitudinal sectional view of a main part of another conventional means, and FIG. 3 is a longitudinal sectional side view of a water faucet with an antifreeze device that can implement the present invention.
FIG. 4 is a longitudinal cross-sectional view of the same essential parts as above, FIG. 5 is an enlarged longitudinal cross-sectional view of the same parts, and FIG. 6 is an enlarged longitudinal cross-sectional view of the parts of another embodiment. Explanation of drawing symbols, A...Water faucet, a...Second
Valve mechanism, 1... Faucet main body, 10... Connection cylinder part, 1
DESCRIPTION OF SYMBOLS 1... Faucet, 12... Stopper rod assembly cylindrical part, 13... Partition wall, 14... Valve opening, 15... Annular valve seat, 2...
Plug rod, 2a... Plug portion, 2b... Handle, 20... Threaded portion, 21... Cylindrical body, 21a... Communication port, 21b
... Spring receiver, 22 ... Packing, 3 ... Thermoelement, 30 ... Piston, 31 ... Main body, 31a ... Temperature sensing part, 32 ... Return spring, 40
...Release spring, 41...Stopper, 42...Abutting member, 50...Cap, 51...Grip, 6...
... Valve, 7... Valve seat, 7a... Upper end surface, 70... Valve port, 71... Threaded portion, w... Contact surface, y... Screw, l... Spring dimension,... Dimension.

Claims (1)

[Scope of utility model registration request] A freezing system in which a small-diameter second valve mechanism a is built into the stopper part 2a of the stopper rod 2 that is screwed onto the faucet body 1, and opens by the temperature-sensitive operation of the thermoelement 3 to communicate the primary side and the secondary side. In the water faucet with a prevention device, the main body 3 of the thermoelement 3 of the second valve mechanism a
The plug part 2 of the plug rod 2 is placed opposite the valve 6 installed on the first side.
The valve seat 7 to be fixedly attached to the valve part a is formed separately from the plug part 2a so that it can be interchanged with the plug part 2a or
A water faucet with an antifreeze device that is screwed together so that it moves forward and backward in the direction of operation.