JPS5917986Y2 - Antifreeze faucet with intake valve - Google Patents

Description

[Detailed description of the invention] This invention is an anti-freeze faucet and drain valve (hereinafter referred to as an anti-freeze faucet).

) This relates to an anti-freeze faucet that is provided with an intake valve on the bonnet of the faucet for the purpose of draining water from a downstream water supply pipe located at a higher position.

When draining water from water supply pipes connected above the water supply pipes and water use equipment connected to the water supply pipes using antifreeze water taps and drain valves, conventionally, an intake valve is installed on the water supply pipe or faucet to remove air. I'm letting you do it.

It was thought that the appropriate position for the intake valve would be the highest point in the waterway where water should be drained, but for example, if an intake valve is installed in a water supply pipe close to a faucet, the water will be separated by the intake air at the highest point, and the water will be separated from the intake valve and the faucet. As water tends to remain in the water supply pipes between the intake valves, drainage downstream of the intake valve is not sufficient and this causes freezing.

On the other hand, since installing an intake valve during waterworks facility construction requires time and effort, this work can be omitted by integrating the intake valve with the antifreeze faucet.

When an intake valve is installed on an antifreeze faucet, it will be located at the bottom of the water supply pipe, and the intake air will eventually rise to the downstream end of the water supply pipe and replace it with water. It has the feature of eliminating the above-mentioned conventional causes of freezing.

An embodiment of this invention that achieves these characteristics will be described as follows.
FIG. 2 shows the upper end of a known antifreeze faucet, in which a cheese 1 is connected to the upper end of a riser pipe that is connected to the main body.

The water that has risen in the rising pipe enters the cheese 1 and flows from the port 2 at one end to the water supply pipe or faucet on the side piping, and the cheese 1 passes through the port 3 at the other end, and the spindle 4 is sent to the valve of the antifreeze faucet located below before rising. It is connected.

The bonnet 5, which is screwed into the other end port 3, has an intake valve mounting portion 6 protruding from one side through which the spindle 4 is inserted.

A hole 9 for inserting a screw into the threaded pipe 8 containing the intake valve 7 is bored in the space 6, and a through hole 1 leading to the cheese 1 is formed in the lower wall of the opening 9.
0, a mounting seat for the backing 11 is provided on the inner bottom surface, a screw that screws into the threaded pipe 8 is provided on the inner periphery of the center part, and a ring backing 12 on the outer periphery of the head of the threaded pipe 8 is tightly slid up and down on the upper inner periphery. I try to keep it moving.

The threaded pipe 8 has an insertion hole 13 for a small synthetic resin type intake valve 7.
is provided through the shaft center, and the opening hole 13 has a step in its diameter so that it is closed when the larger diameter lower part of the intake valve 7 rises, and when the intake valve 7 is inserted into the insertion hole 13 from below. A ring 14 to prevent falling off is fitted into the bottom of the hole 13.

This invention is constructed by providing a backing 15 for stopping shallow water between the bonnet 5 and the spindle 4.

When the antifreeze faucet is closed and water is being supplied from one end port 2 to the water usage equipment, water entering the through hole 10 from the gap between the bonnet and spindle 4 on the other end port 3 side pushes up the intake valve 7 and flows into the insertion hole 1.
Block 3 and avoid shallow water.

When the anti-freeze faucet is opened, the water pressure area in the through hole 10 due to drainage from the drain hole at the bottom of the opening causes the intake valve 7 to fall due to atmospheric pressure, and air is sucked in from the insertion hole 13, and the intake air reduces water usage. Water in the water pipe is drained without the need for air intake from the appliance.

When the threaded pipe 8 is lowered with a screw and the pipe line comes into contact with the backing 11, the insertion hole 13 and the through hole 10 will no longer communicate with each other. Prevent fatigue etc.

According to this idea, water can be drained to the terminal of the water supply channel, and there is no need for intake valve equipment in the water supply channel system, as is the case with conventional systems.
There is an effect that the intake operation is performed at the same time as the antifreeze operation of the antifreeze faucet.

[Brief explanation of the drawing]

Figure 1 is a plan view of the bonnet part of an antifreeze faucet with this invention, and Figure 2 is a partial longitudinal sectional view of the same as above, in which 1 is cheese;
2 is one end port, 3 is the other end port, 4 is a spindle, 5 is a bonnet, 6 is an intake valve loading part, 7 is an intake valve, 8 is a threaded pipe, 9
10 is a hole, 11 is a backing, 12 is a ring backing, 13 is an insertion hole, 14 is a ring, and 15 is a backing.

Claims (2)

[Scope of utility model registration request] (1) A hole 9 for inserting the threaded pipe 8 is drilled in the bonnet 5 facing the water supply passage of a faucet such as an antifreeze faucet, and the opening 9 is
A through hole 10 communicating with the water supply passage is bored in the bonnet 5, and an intake valve 7 is provided in the threaded pipe 8 so as to close the intake valve insertion hole 13 by water pressure. . (2) When the threaded pipe 8 is lowered to the inner bottom of the hole 9, the threaded pipe 8
An antifreeze faucet with an intake valve according to claim 1, which is provided with a backing 11 that is in contact with the bottom surface of the hydrant.