CN101377243B - A faucet that can be automatically turned off after the water is cut off - Google Patents

Abstract

The invention relates to a faucet, which comprises a shell, a valve seat, a handle, a valve stem, a valve core, a water inlet channel, a water outlet channel and a valve stem installation channel; the invention also comprises a spring used to return the valve core to the close location, a ball float valve used to stop the automatic rebounding of the valve core, and a valve core locking device used to lock the valve core at the open position. When the faucet is turned on under the condition of no water supply, the ball float valve bears no buoyancy or pressure of water and is detached from the threaded sealing plug, and the valve core automatically rebounds to the close state under the elastic force of the spring, thus preventing the waste of artesian water when water is supplied; when water supply is suddenly stopped in normal use, the ball float valve bears no buoyancy or pressure of water and falls down and automatically rebounds to the close state under the elastic force of the spring, thus preventing water waste due to that water supply is not readily turned off. The invention is widely applicable to households, hotels and restaurants, and is especially applicable to the locations of centralized water supply, such as large and medium schools, collective apartments, and the like.

Description

A faucet that can be automatically turned off after the water is cut off

Technical field:

The invention relates to a valve device, in particular to a faucet

Background technique:

At present, most of the faucets provided in households and public places are of the type disclosed in U.S. patent specification US××××××, which includes: components such as a housing, a valve stem, a handle, a valve core and a valve seat, and the housing has The water inlet channel, the water outlet channel and the installation channel of the valve stem are connected to each other. The water outlet channel and the installation channel of the valve stem are not on the same centerline. A part is installed in the installation channel of the casing, and the sealing between the wall of the channel and the valve stem is realized through the sealing packing and the compression nut. The handle is located on the upper part of the housing. By turning the handle, the valve stem can rotate on a nut, and the rotation of the valve stem on the nut can lift the valve core relative to the valve seat, thereby realizing the opening or closing of the faucet. This water tap has been widely used in families and various public places. But, following shortcoming is arranged during its use: the one, under the situation of water outage, a lot of people do not consciously close or forget to close when the water does not come out after turning on the tap, once after water comes, no one closes in time again, especially in large and medium schools, This situation is more likely to occur in public places such as collective apartments, restaurants, hotels, etc., which can easily cause waste of water resources; second, during the normal water use process, the water suddenly stops halfway, and people often forget to turn off the tap. When the water comes, no one is there. Not only will it cause waste of water resources, but it will even cause immersion damage to indoor facilities.

Invention content:

The problem to be solved by the present invention is to provide a water-saving faucet that can be automatically closed when the water is turned on or can be automatically closed when the water is suddenly stopped during normal water use.

The above problems of the present invention are solved by providing a faucet with the following structure. The faucet includes: a housing, a valve seat, a handle, a valve stem, and a valve core. The hole realizes the water inlet channel, the water outlet channel and the valve stem installation channel that are connected with each other. The handle is installed at one end of the valve stem, and the valve core is located at the other end of the valve stem. In the stem mounting channel, the faucet also includes a spring for controlling the spool back to the closed position, a float valve for controlling the spool to stop automatic rebound, and a valve to lock the spool in an open position Core position locking device.

The float valve consists of a cylindrical floating ball with semicircular protrusions on the upper part installed in the installation channel, a semicircular concave hole on the lower surface of the sealing plug, grooves on the inner surface of the cylindrical floating ball, guide rails on both sides of the valve core, and the bottom of the guide rail. It is composed of a cylindrical floating ball positioning device.

The valve core position fixing device is composed of a positioning plate on the lower part of the valve core and a positioning plate on the inner surface of the lower part of the housing.

Compared with the water tap of the prior art, the automatic closing water tap of the present invention has the following advantages: the one is to open the water tap when the water is cut off, and because the float valve is not subjected to the buoyancy and pressure of the water, it will break away from the sealing plug, and the valve core will be closed under the elastic force of the spring. Under the action, it will automatically bounce back to the closed state, preventing the waste of self-flow after the water comes in; second, when the water is suddenly stopped when the water is used normally, the float valve loses the buoyancy and pressure of the water and falls, and the valve core automatically springs back under the action of the spring to the closed state, thereby saving water resources.

Description of drawings:

Embodiments of the present invention will be described below with reference to the accompanying drawings.

Fig. 1 is a sectional view of the open state of the faucet of the present invention when the water is not cut off.

Fig. 2 is a perspective view of a valve stem and a valve core.

Fig. 3 is a perspective view of the sealing wire plug (it is an inverted view of the sealing wire plug in Fig. 1 ).

Fig. 4 is a perspective view of a cylindrical float.

Fig. 5 is a sectional view of A-A in Fig. 1 .

Fig. 6 is a perspective view of the spring chamber cover (a reverse view of the spring chamber in Fig. 1).

Detailed ways:

Fig. 1 is a sectional view of the open state of the faucet of the present invention when the water is not cut off. The casing 1 includes a water inlet channel 2, a water outlet channel 3 and a valve stem installation channel 4, the handle 11 is installed at one end of the valve stem 22, and the valve core 5 is located at the other end. The two ends of the spring 9 are respectively fixed on the top of the valve stem 22 and the two small holes of the sealing plug 8 . The float valve consists of a cylindrical floating ball 7 with a semicircular protrusion 17 on the upper part of the installation channel, a semicircular concave hole 19 on the lower surface of the sealing plug 8, a groove 18 on the inner surface of the cylindrical floating ball, and two sides of the valve core 5. The guide rail 15 and the cylindrical floating ball positioning device 14 under the guide rail 15 are composed. The cylindrical floating ball 7 is integrated with the valve stem 22 through the inner surface groove 18 and the guide rail 15, and can move up and down relative to the valve stem 22 along the guide rail 15. slide. The spool position setting device is composed of the locating plate 21 on the bottom of the spool 5 and the locating plate 20 on the inner surface of the lower part of the housing 1. The outer edges of the two locating plates add up to 1/4 circle to ensure that the spool can rotate 90°. The valve rod installation channel is closed by the sealing plug 8 and the sealing rings 23 and 24 .

Figure 1 shows the open state of the faucet. When the handle is rotated clockwise by 90°, the water passage located at the valve core 5 coincides with the water outlet passage 3, and the water flows out smoothly. At this time, although the spring 9 has elastic force to pull the valve rod 22 back to the position before the rotation, because the cylindrical float 7 is under the buoyancy and pressure of the water, the four semicircular protrusions 17 on its top will not be in contact with the sealing plug 8. The semicircular grooves 19 on the lower surface meet together, thereby preventing the rotation of the valve stem. In addition, since the lower surface of the sealing plug 8 is evenly distributed with semicircular grooves, the valve stem can be rotated at any angle less than 90° to control the size of the water flow. 21 and the two positioning plates 20 on the inner surface of the lower part of the housing 1 are combined into two 90° circles to ensure that the valve stem 22 can rotate 90° at a maximum until the water passage hole 13 of the valve core 5 coincides with the water outlet channel 3 .

When the water is cut off, the handle 11 is rotated, and after the remaining water has run out, because the cylindrical float 7 loses the buoyancy and pressure of the water, it slides down to the cylindrical float positioning device 14 along the guide rail 15, and the semicircular protrusion 17 on its top is aligned with the The semicircular groove 19 at the bottom of the sealing plug is separated, the valve stem 22 is only rebounded to its original position by the elastic force of the spring 9, the water hole 13 on the valve core 5 is staggered with the water outlet channel 3, and the faucet is closed to complete the automatic closing process.

Claims (3)

1. A water faucet, comprising: a housing, a handle, a valve stem, and a valve core, the housing including a water inlet channel, a water outlet channel and a valve stem installation channel, the handle is mounted on one end of the valve stem, and the valve core Located at the other end, it is characterized in that: the faucet includes a spring (9) for controlling the spool to return to the closed position and a float valve for controlling the spool to stop automatic rebound; the two ends of the spring (9) respectively fixed in the small hole (16) on the top of the valve stem (22) and the small hole (25) of the sealing plug (8); The semicircle protrusion (17) and the semicircle concave hole (19) on the lower surface of the sealing plug (8), the groove (18) on the inner surface of the cylindrical floating ball, the guide rails (15) and the guide rails (15) on both sides of the valve core (5) ) below the cylindrical float positioning device (14); the valve core is provided with a vertical water hole (13); the valve core only rotates in the horizontal direction; the faucet also includes a Spool position locking means to lock said spool (5) in an open position. 2. The faucet according to claim 1, characterized in that a spring chamber cover (12) is provided on the upper part of the spring chamber (10) where the spring (9) is located. 3. The faucet according to claim 1, characterized in that: the valve core position locking device consists of a positioning plate (21) at the bottom of the valve core (5) and a positioning plate (20) on the inner surface of the lower part of the housing (1). )constitute.

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