Automatic water shut-off device

Abstract

The present invention relates to an automatic water-stopping device, which includes: a main body and a contact unit. The main body includes a float and a water supply assembly. The water supply assembly is disposed on the float to supply liquid to a water-receiving vessel. The float is suspended above the liquid in the water-receiving vessel. The water supply assembly includes a body and a stop valve. The body includes an inlet channel, an outlet channel, and a valve port. The inlet channel is connected to the outlet channel via the valve port. The stop valve is disposed on the body and includes a housing, a switching mechanism, and a valve element. The housing includes a communicating chamber and at least one first inlet. The switching mechanism is housed in the chamber and is linked to the valve element. The switching mechanism is normally in an open position and can be switched to a closed position by the liquid. A stop unit is disposed on the main body. The stop unit is selectively abutted against a height limiting member to keep the main body at a predetermined height. The liquid in the water-receiving vessel can enter the chamber through the at least one first inlet to drive the switching mechanism to switch to the closed position.

Claims

1. An automatic water-stopping device, comprising: A main body includes a float and a water supply assembly. The water supply assembly is disposed on the float to supply a liquid to a water-receiving vessel. The float is suspended above the liquid in the water-receiving vessel. The water supply assembly includes a body and a stop valve. The body includes an inlet channel, an outlet channel, and a valve port. The inlet channel is connected to the outlet channel via the valve port. The stop valve is disposed on the body and includes a housing, a switching mechanism, and a valve element. The housing includes a communicating chamber and at least one first inlet. The switching mechanism is housed in the chamber and is linked to the valve element. The mechanism is normally in an open position and can be switched to a closed position by the liquid. When the switching mechanism is in the open position, the valve is not closed and the water inlet channel is connected to the water outlet channel. When the switching mechanism is in the closed position, the valve is closed and the water inlet channel is not connected to the water outlet channel. A stop unit is provided on the main body for selectively abutting against a height limiting member to keep the main body at a predetermined height. The liquid in the water receiving device can then enter the chamber through the at least one first water inlet to drive the switching mechanism to switch to the closed position.

2. The automatic water-stopping device as claimed in claim 1, wherein the housing further includes a base and a cover, the base and the cover together forming the chamber, the base having at least one first water inlet, the cover and the body together clamping the valve, thereby the cover and the valve forming a pressure chamber, the valve having a through hole connecting the water inlet channel and the pressure chamber, the cover having a pressure relief hole and at least one vent hole, the pressure relief hole connecting the pressure chamber and the chamber, and the at least one vent hole connecting the chamber to the outside; wherein... When the switch mechanism is in the open position, the switch mechanism does not block the pressure relief hole, and the pressure chamber is connected to the outside through the chamber; when the switch mechanism is in the closed position, the switch mechanism blocks the pressure relief hole, and the pressure chamber and the chamber are not connected to each other.

3. The automatic water-stopping device as claimed in claim 2, wherein the water-stopping valve further includes an elastic member that springs against the valve member and the cover, the elastic member giving the valve member a tendency to move toward the valve port.

4. The automatic water-stopping device as claimed in claim 2, wherein the switching mechanism includes a float and a sealing member, the float being movably housed in the chamber, and the sealing member being movably disposed between the float and the pressure relief hole; wherein, As the switching mechanism moves from the open position to the closed position, the buoyancy system drives the sealing member to move closer to the pressure relief hole. When the sealing member blocks the pressure relief hole, the switching mechanism is in the closed position.

5. The automatic water-stopping device as claimed in claim 1, wherein the abutment unit protrudes from one side of the body and the water-stopping valve is assembled on the other side of the body.

6. The automatic water-stopping device as claimed in any one of claims 1 to 5, wherein the float comprises a support portion and a floating portion, the support portion being connected to the water supply assembly, and the floating portion being disposed around the outside of the support portion.

7. The automatic water-stopping device as claimed in claim 6, wherein the floating part comprises a plurality of components that are detachably assembled with each other.

8. The automatic water-stopping device as claimed in claim 6, wherein the supporting portion is provided with at least one second water inlet, the at least one second water inlet is connected to the at least one first water inlet, and the total cross-sectional area of ​​the at least one second water inlet is not less than the total cross-sectional area of ​​the at least one first water inlet.

9. The automatic water-stopping device as claimed in claim 6, wherein at least one first limiting portion is provided in the bearing portion and at least one second limiting portion is provided in the water supply component, the at least one second limiting portion and the at least one first limiting portion mutually blocking and interfering with each other in the circumferential direction, so that the water supply component cannot rotate relative to the bearing portion.

10. The automatic water-stopping device as claimed in claim 3, wherein the switching mechanism includes a float and a sealing member, the float being movably housed in the chamber, and the sealing member being movably disposed between the float and the pressure relief hole; wherein, As the switching mechanism moves from the open position to the closed position, the float system drives the sealing member to approach the pressure relief hole. When the sealing member blocks the pressure relief hole, the switching mechanism is in the closed position. The abutment unit protrudes from one side of the body, and the stop valve is assembled on the other side of the body. The float includes a supporting part and a floating part. The supporting part is used to connect with the water supply component, and the floating part is arranged around the outside of the supporting part. The floating part includes a plurality of components, which are detachably assembled with each other. The supporting part is provided with at least one second water inlet, which connects to at least one first water inlet. The total cross-sectional area of ​​the at least one second water inlet is not less than the total cross-sectional area of ​​the at least one first water inlet. At least one first limiting part is provided on the supporting part, and at least one second limiting part is provided on the water supply component. The at least one second limiting part and the at least one first limiting part prevent interference between each other in the circumferential direction. The water supply component is designed to prevent rotation relative to the support portion; one end of the elastic member extends through the through hole into the water inlet channel; the plurality of components are hollow tubes; the plurality of components are not interconnected with the support portion; the plurality of components are divided into a plurality of first components, a plurality of second components, and a plurality of third components, the plurality of first components and the plurality of second components are connected in an alternating manner to form an outer frame, and the plurality of third components are respectively connected to the support portion and the outer frame; the main body is higher than the floating portion; there are two of the at least one first limiting portion and two of the at least one second limiting portion, the two first limiting portions are arranged in a straight line, the two second limiting portions are arranged in a straight line, each of the first limiting portions is a concave portion, each of the second limiting portions is a convex portion, and the second limiting portion is embedded in the first limiting portion; the maximum cross-sectional area of ​​the float is at least three times the maximum cross-sectional area of ​​the float body; the at least one second water inlet and the at least one first water inlet are arranged face to face.

Images