WO2015043079A1

WO2015043079A1 - Time delay automatic closing faucet not affected by water quality

Info

Publication number: WO2015043079A1
Application number: PCT/CN2013/088852
Authority: WO
Inventors: 吴跃刚
Original assignee: 吴跃刚
Priority date: 2013-09-24
Filing date: 2013-12-09
Publication date: 2015-04-02
Also published as: CN203516898U

Abstract

A time delay automatic closing faucet not affected by water quality comprises a valve body (1) and a valve core (2). A water passing hole (6) whose opening is controlled by the valve core (2) is disposed at a lower portion of the valve body (1). A water outlet hole (5) is disposed in a side surface of the valve body (1). The water outlet hole (5) is connected to the water passing hole (6) through a water channel in the lower portion of the valve body (1). The valve core (2) penetrates through the valve body (1) from the middle. A press switch (7) is fixed to a top end of the valve core (2). A spring apparatus (11) enabling the valve core (2) to reset is disposed in the valve body (1). An upper portion of the valve body (1) is provided with a negative pressure cavity (12). A piston (8) disposed in the negative pressure cavity (12) is connected onto the valve core (2). The valve core (2) drives the piston (8) to perform piston motion in the negative pressure cavity (12). A one-way seal ring (9) is disposed at the periphery of the piston (8). A size-adjustable air inlet hole (10) is disposed in the piston (8). According to the time delay automatic closing faucet, the negative pressure cavity is disposed at the upper portion of the valve body, so that the negative pressure cavity is separated from the water channel in the lower portion of the valve body, thereby preventing impurities in water from affecting the work of the negative pressure cavity, overcoming the defect that the service life of an existing automatic closing faucet is short, and effectively extending the service life of the faucet.

Description

Delayed self-closing faucet not affected by water quality

Technical field

The invention relates to a faucet valve, in particular to a delayed self-closing faucet which is not affected by water quality.

Background technique

In the contemporary era, in order to meet the increasing hygiene requirements of people, most of the toilets in public places are equipped with infrared sensor faucets or time-delayed faucets. One of the common features of these two types of faucets is that people do not need to touch the faucet after washing their hands. The automatic closing of the faucet is possible. Among them, the self-closing faucet adopts a spring device to realize self-closing reset, and the faucet closing time is adjusted by the negative pressure change rate.

As shown in FIG. 1 , the valve of the existing time delay self-closing faucet generally comprises a valve body 1 and a valve core 2, and a lower pressure chamber 3 separating the valve body 1 and the water inlet pipe is disposed at a lower portion of the valve body 1, and the negative pressure chamber 3 is provided. The upper part is provided with a water inlet hole 4 for connecting the inlet pipe, the valve body 1 is provided with a water outlet hole 5, and the valve body 1 is further provided with a water-passing hole 6 controlled by the valve core 2, and the water-passing hole 6 is connected to open the water hole. 5 and the water inlet hole 4; the valve core 2 passes through the valve body 1 from the middle, the top of the valve core 2 is provided with a push switch 7, the lower end of the valve core 2 is connected to the piston 8 disposed in the negative pressure chamber 3, and the piston 2 drives the piston 8 is a piston movement in the negative pressure chamber 3, a unidirectional seal ring 9 is arranged around the piston 8, and a negative pressure adjustment hole 16 of adjustable size is arranged at the bottom of the piston 8; a spring for resetting the valve core 2 is arranged in the valve body 1 Device 11. Before use, the water-passing hole 6 is closed. When the pressure is applied to the push switch 7 to move the piston 8 to the inside of the negative pressure chamber 3, the water-passing hole 6 is opened, and the water passes through the water-inlet hole 4 and flows out from the water outlet hole 5 while being under negative pressure. The water in the chamber 3 is discharged through the one-way sealing ring 9; when the piston 8 is returned by the spring device 11, a negative pressure is formed between the piston 8 and the negative pressure chamber 3, and the water in the water inlet hole 4 is adjusted by the negative pressure. The hole 16 enters between the piston 8 and the negative pressure chamber 3, and the piston 8 is slowly reset. The resetting time can be set by adjusting the size of the negative pressure adjusting hole 16, and when the piston 8 returns to the original position, the water passing hole 6 is blocked. The faucet is automatically closed.

The faucet adopting the above valve realizes the function of automatically closing the time delay, but has the disadvantages of short service life: 1. The impurities in the water block the negative pressure regulating hole 16, so that the negative pressure in the negative pressure chamber 3 cannot be released, resulting in the piston 8 can not be reset for a long time, so that the delay self-closing function is invalid; 2. When the piston 8 is reset, the impurities in the water may also rub against the one-way sealing ring 9, and the long-term friction may cause the one-way sealing ring 9 Wear and failure, resulting in the negative pressure chamber 3 can not form a negative pressure inside, the piston 8 will be quickly reset after pressing, the delay self-closing function is invalid; 3, the one-way sealing ring 9 is immersed in water for a long time, it is also easy to affect its sealing performance , thereby invalidating the valve.

Summary of the invention

In order to overcome the deficiencies of the prior art, the present invention provides a time delay self-closing faucet for separating a negative pressure chamber and a water, preventing impurities in the water from affecting the operation of the negative pressure chamber, and effectively extending the service life of the faucet.

The technical solution adopted by the present invention to solve the technical problem thereof is:

The utility model relates to a delay self-closing faucet which is not affected by water quality, comprising a valve body and a valve core, and a valve body is provided with a water-passing hole for controlling water inlet by a valve core, and a water outlet hole is arranged at a side of the valve body, and the water outlet hole is passed through The water channel connected to the lower part of the valve body is connected with the water passing hole; the valve core passes through the valve body from the middle portion, and the pressing switch is fixed at the top end of the valve core, and the valve body is provided with a spring device for resetting the valve core, and the upper part of the valve body is provided with a negative pressure chamber. A piston disposed in the negative pressure chamber is connected to the valve core, and the piston moves the piston in the negative pressure chamber to move the piston. The piston is provided with a one-way sealing ring, and the piston is provided with an adjustable size air inlet hole. The pores connect the negative pressure chamber to the outside atmosphere.

In the present invention, the one-way sealing ring is a V-shaped sealing ring or a U-shaped sealing ring.

Further, the opening of the V-shaped sealing ring or the U-shaped sealing ring is upward, and the air between the piston and the negative pressure chamber can run out of the outside through the opening one-way sealing ring, but the outside air cannot enter through the one-way sealing ring. Between the piston and the negative pressure chamber.

In the present invention, a waterproof sealing ring is disposed between the negative pressure chamber and the lower water passage of the valve body.

Further, the waterproof sealing ring comprises an annular sealing ring and an inverted U-shaped sealing ring.

In the present invention, the spring means is disposed between the push switch and the valve body.

The beneficial effects of the invention are:

The time delay self-closing faucet of the invention sets the negative pressure chamber on the upper part of the valve body, so that the negative pressure chamber is separated from the water channel in the lower part of the valve body, thereby avoiding impurities in the water affecting the operation of the negative pressure chamber, and overcoming the service life of the current self-closing faucet. Short shortcomings effectively extend the life of the faucet.

DRAWINGS

Figure 1 is a cross-sectional view of a conventional self-closing faucet valve;

Figure 2 is a cross-sectional view of the time delay self-closing faucet valve of the present invention in a closed state;

Figure 3 is a cross-sectional view of the time delay self-closing faucet valve of the present invention in an open state.

detailed description

The invention will now be further described with reference to the drawings and embodiments.

Referring to FIG. 2 and FIG. 3, the present invention provides a time delay self-closing faucet which is not affected by water quality, and includes a valve body 1 and a valve core 2, and a water passage hole 6 is disposed at a lower portion of the valve body 1, and a valve body 1 is disposed at a side surface thereof. The water outlet hole 5 and the water outlet hole 5 are connected to the water passing hole 6 through a water passage provided at a lower portion of the valve body 1. The upper part of the valve body 1 is provided with a negative pressure chamber 12, and a waterproof sealing ring is arranged between the negative pressure chamber 12 and the water channel to prevent water from entering the negative pressure chamber 12, thereby affecting the operation of the negative pressure chamber 12. The waterproof sealing ring comprises an annular sealing ring and an inverted U-shaped sealing ring 13 to form a double protection, wherein the inverted U-shaped sealing ring 13 has a better waterproof effect than the annular sealing ring.

The valve body 2 passes through the valve body 1 from the middle, a push switch 7 is fixed to the top end of the valve body 2, and a spring device 11 for resetting the valve body 2 is disposed between the push switch 7 and the valve body 1. A rubber pad for blocking the water passing hole 6 is provided at a lower portion of the spool 2. The piston 2 is also fixedly connected with a piston 8 disposed in the negative pressure chamber 12, and a V-shaped one-way sealing ring 9 is disposed around the piston 8. The opening of the one-way sealing ring 9 is upward, and the piston 2 drives the piston. 8 performs piston movement in the negative pressure chamber 12. The piston 8 is provided with an adjustable size intake port 10, and the intake port 10 communicates with the negative pressure chamber 12 and the outside atmosphere.

The working process of the delayed self-closing faucet of the present invention is as follows: before use, the rubber pad in the lower part of the valve core 2 blocks the water passing hole 6, and the faucet is in a closed state; when the pressing switch 7 is forced to move the valve core 2 downward, The rubber pad leaves the water passing hole 6, the water passing hole 6 is opened, the water enters the water channel of the lower part of the valve body 1 through the water passing hole and flows out from the water discharging hole 5, at this time, the piston 8 moves to the bottom of the negative pressure chamber 12, and the piston 8 and the negative electrode The air between the pressure chambers 12 is discharged through the one-way sealing ring 9; when the urging force applied to the push switch 7 is cancelled, the push switch 7 is automatically reset by the spring device 11 to drive the piston 8 to move upwards. A vacuum is formed in the pressure chamber 12, and the outside air slowly enters between the piston 8 and the negative pressure chamber 12 through the air inlet hole 10. Under the dual action of the spring device 11 and the atmospheric pressure, the piston 8 is slowly reset, and the resetting time can be passed. The size setting of the intake hole 10 is adjusted. When the piston 8 returns to the original position, the rubber pad at the lower portion of the spool 2 blocks the water passage hole 6, and the faucet is closed.

The time delay self-closing faucet of the invention sets the negative pressure chamber 12 on the upper part of the valve body 1, so that the negative pressure chamber 12 is separated from the water channel in the lower part of the valve body 1, and the impurities in the water are prevented from affecting the operation of the negative pressure chamber 12, thereby overcoming the present The shortcoming of the self-closing faucet has a short service life, which effectively extends the service life of the faucet.

The above is only a preferred embodiment of the present invention, and any technical solution that achieves the object of the present invention by substantially the same means is within the scope of the present invention. For example, the one-way seal ring 9 can also be a U-shaped seal ring with an upward opening, which is within the protection scope of the present invention.

Claims

The utility model relates to a delay self-closing faucet which is not affected by water quality, comprising a valve body and a valve core, and a valve body is provided with a water-passing hole for controlling water inlet by a valve core, and a water outlet hole is arranged at a side of the valve body, and the water outlet hole is passed through The water channel connected to the lower part of the valve body is connected with the water passing hole; the valve core passes through the valve body from the middle portion, and the pressing switch is fixed at the top end of the valve core, and the valve body is provided with a spring device for resetting the valve core, characterized in that: the upper part of the valve body is provided with a negative The pressure chamber is connected with a piston disposed in the negative pressure chamber, and the piston drives the piston to move in the negative pressure chamber. The piston is provided with a one-way sealing ring, and the piston is provided with an adjustable size air inlet. The hole and the air inlet communicate with the negative pressure chamber and the outside atmosphere.
The time delay self-closing faucet according to claim 1 , wherein the one-way sealing ring is a V-shaped sealing ring or a U-shaped sealing ring.
The time delay self-closing faucet according to claim 2, wherein the opening of the V-shaped seal or the U-shaped seal ring is upward.
A time delay self-closing faucet that is not affected by water quality according to claim 1, wherein a waterproof sealing ring is disposed between the negative pressure chamber and the lower water passage of the valve body.
A time delay self-closing faucet according to claim 4, wherein the waterproof sealing ring comprises an annular sealing ring and an inverted U-shaped sealing ring.
A time delay self-closing faucet that is not affected by water quality according to claim 1, wherein the spring device is disposed between the push switch and the valve body.