Tube Valve Introduction

Technical field

The pipe valve integrates the functions of the joint, plug and stop valve in the water supply system into one, and can be used as a plug for the hydrostatic test. It can be used as a pipe joint and faucet or other water equipment. The connection can also be used as an automatic shut-off valve to facilitate the replacement or disassembly of wearing parts (such as faucets, water purifiers).

Background technique

At present, the house interior water supply pipes are mostly concealed. Before the pipes are concealed, the plugs that are to be installed are plugged with plugs and subjected to pressure tests. After passing the tests, the pipes are concealed and only the plugs are exposed on the wall. At the end of the renovation, the developer or resident will remove the plug and connect it to the water pipe by rotating the tap. At this time, due to time, materials, construction and other reasons, the plug is not easy to remove, often using some forced way to dismantle, so that the pipeline, in particular, the interface damage. Because it is a buried burial, the decoration is basically completed. The difficulty and economic loss caused by the rework are large. If the rework is not used reluctantly, the seepage and leakage of the pipe joints will be avoided. Common discoloration, blistering and shedding of the wall paint will occur. The board is in contact with the mold and the paint peels off. After the faucet is damaged, it is necessary to close the entry valve to replace it. When the damaged faucet is removed, the water in the pipe will be lost. The other parts of the pipe system will be free of water. After the faucet is reinstalled, the faucet must be opened again. Water can be used only after the shutoff valve, which also results in time loss. If it is high-level or public places, it will cause time loss, inconvenience to life and waste of water resources.

Technical solutions

It consists of an outer tube, a stem, and a sealing ring. The outer tube and the stem are made of a hard material. The seal ring is made of an elastic material. The outer tube is connected to the other joint to make an external thread, and the tap is made to be internally threaded. ;

The inner wall of the outer tube is hollowed into a dumbbell shape, and is composed of a water inlet side cylinder surface, a water inlet side cone surface, a water flow cylinder surface, a water outlet side cone surface, and a water outlet side cylinder surface;

The core tube is installed in the outer tube, and the core column is composed of a water inlet end cone, a connection column and a water outlet end cone, and the water inlet end cone faces the cone end of the outlet water end cone and is connected through the connection column;

A sealing ring (1) is fixed on the cone surface of the water inlet end cone, a sealing ring (3) is fixed on the cone bottom of the water outlet end cone, and the sealing ring (2) is installed in the outer pipe inner water side cone surface and the core column Between the end cones of the water outlet, the seal ring (2) is always under pressure after being installed or under pressure when the seal ring (1) is not pressed, and the sealing rings (1) and (2) are O-shaped in section, sealed Circle (3) is square;

The seal ring (1) is used to close the gap between the cone surface of the water inlet end cone of the stem and the cone surface of the water inlet side of the outer tube, and the seal ring (2) is used to close the cone surface of the cone of the water outlet end of the stem and the outside. The gap between the side cones of the water outlet pipe, the sealing ring (3) is used to close the gap between the bottom surface of the cone at the outlet end of the stem and the water inlet of the faucet;

After the outer tube, stem and sealing ring are assembled, the sealing rings (1) and (2) are under pressure;

The gap between the sealing ring (2), the water-flow cylinder surface and the connecting column can pass through, and the cone of the outlet end of the stem is opened with not less than one hole through which the water can pass;

The axial compression of the seal ring (1) caused by pressure from the tap water or the seal ring (2) is less than the axial movement of the faucet mounting to stably push the stem.

When the pipe is connected to the water pipe, when the water is flowing, the water pressure moves the stem to the outlet end, and the seal ring (1) strengthens the gap between the cone of the closed inlet stem cone and the outer pipe inlet cone. Water cannot pass through, and the valve acts as a plug.

In the installation process of the faucet, the tube valve is equivalent to a stop valve when the tube spool is not pushed toward the inlet end; the inlet of the faucet moves toward the inlet end, the sealing ring (3) is pressurized, and the sealing ring (3) closes the core The gap between the bottom of the water outlet cone and the water inlet of the faucet pushes the stem to the inlet end, the sealing ring (2) is pressurized, and the sealing ring (2) closes the cone of the outlet water end cone. The gap between the water side cone surface, the core column with the seal ring (1), (3) to the water inlet end, to the sealing ring (1) does not close the cone water inlet cone cone and the outer tube into The gap between the water side cone surface, tap water from the cone of the water inlet end of the stem to the gap between the cone of the outer tube, the gap between the sealing ring (2) and the connecting column, the water column surface The gap between the connection column and the hole at the outlet end of the stem flows into the faucet. The valve is equivalent to a common water pipe connector, and the faucet is ready for water use.

When the faucet is replaced or cleaned, the faucet moves in the direction of the water outlet. The inner core of the valve is also moved to the outlet direction under the water pressure and the tension of the sealing ring (2), because the sealing ring (1) is tap water or the sealing ring (2) The amount of axial compression caused by the pressure is less than the axial movement of the faucet installation to stably push the stem. The sealing ring (1) first closes the cone between the cone of the inlet end of the stem and the cone of the inlet side of the outer tube. After the gap, the faucet is separated from the sealing ring (3), the valve is equivalent to the stop valve, water cannot pass through, the faucet is removed or cleaned, and other equipment is used normally.