Automatic closing type water-saving valve

Abstract

The invention provides an automatic closing type water-saving valve, and relates to the field of water-saving valves, the automatic closing type water-saving valve comprises a valve, the valve comprises a valve sleeve and a valve core matched in the valve sleeve, the front end and the rear end of the valve sleeve are provided with a water inlet connector and a water outlet connector, and the valve core is provided with two water through holes capable of penetrating through the water inlet connector and the water outlet connector. A valve rod used for controlling the valve element to rotate is arranged on the valve element, the valve further comprises a triggering mechanism and a closing mechanism, the triggering mechanism comprises a long-strip-shaped cavity, a piston, an air bag, a top plate and a spring, and the interior of the cavity is divided into a piston cavity and a containing cavity through a partition plate. According to the automatic closing type water-saving valve, when the valve starts to supply water, the side water hole injects water into the piston cavity synchronously, the piston is extruded towards the direction of the partition plate through water pressure, so that gas is extruded into the air bag, and the air bag expands to extrude the spring. And the trigger switch triggers the electromagnet to be electrified, so that the rack drives the valve element to reversely rotate by 90 degrees, and the valve is closed.

Description

Technical Field

[0001] The invention relates to the technical field of water-saving valves, in particular to an automatic closing water-saving valve. Background Art

[0002] Manual valves have valves that can be opened or closed by rotating the valve core at an angle of 90 degrees, such as ball valves, plug valves, butterfly valves, etc. In the water supply system of manual valves that can be opened or closed by rotating the valve core at an angle of 90 degrees, water may be cut off sometimes. If the valve is opened when the water is cut off, and it is found that there is no water after the valve is opened and the valve is forgotten to be closed, a valve leakage accident may occur after the water supply is restored. If the valve leakage lasts for a long time, it will cause waste of water resources and safety accidents. In the prior art, there is no valve that can be automatically closed by rotating the valve core at an angle of 90 degrees after the water leaks.

[0003] Based on the above issues, this case arose. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an automatic closing water-saving valve, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic closing water-saving valve, comprising a valve, the valve comprising a valve sleeve and a valve core adapted in the valve sleeve, a water inlet interface and a water outlet interface are arranged at the front and rear ends of the valve sleeve, the valve core is provided with two water holes that can pass through the water inlet interface and the water outlet interface, the valve core is provided with a valve stem for controlling its rotation, and also comprises a trigger mechanism and a closing mechanism, the trigger mechanism comprises a long chamber, a piston, and a gas collection and release assembly, the chamber is divided into a piston chamber and a containing chamber by a partition, the piston is movably adapted in the piston chamber, the partition is provided with an air hole that passes through the piston chamber and the gas collection and release assembly, the valve core is provided with a side water hole at a 90° direction between the two water holes, the head of the piston chamber is provided with a water inlet hole, the valve sleeve is provided with a connecting pipe that passes through the side water hole and the water inlet hole at a 90° direction between the water inlet interface and the water outlet interface, and a trigger switch corresponding to the piston is provided on the partition, and the trigger switch is used to trigger the closing mechanism to control the rotation of the valve stem.

[0008] Preferably, the gas collection and release assembly includes an airbag, a top plate and a spring. The top plate is movably adapted in the accommodating cavity, and one end is connected to the end of the accommodating cavity through a spring. One end of the airbag is fixed on the partition and connected to the air hole, and the other end is fixed on the top plate.

[0009] Preferably, the closing mechanism includes a shell, a gear, a rack, and a guide rail. The shell is fixed on the valve sleeve, the guide rail is horizontally arranged in the shell, the rack is slidably adapted on the guide rail, the gear is coaxially arranged on the valve stem and meshes with the rack, an electromagnet corresponding to the rack is arranged at the end of the guide rail, the rack is a magnetic body, and when the electromagnet is energized, the magnetic poles of the electromagnet and the rack corresponding to one side are the same, and the trigger switch is used to control the energization of the electromagnet.

[0010] Preferably, a delay mechanism is provided on the chamber, and the trigger switch is provided on the delay mechanism, and the delay mechanism can drive the trigger switch to move and adjust the position along the length direction in the piston cavity.

[0011] Preferably, the delay mechanism includes a screw box, an adjusting screw, a nut and a baffle, the screw box is arranged on the chamber and along the length direction of the piston chamber, the adjusting screw is pivotally connected to the screw box through a bearing seat, the nut thread is adapted outside the adjusting screw and is slidably adapted along the length direction of the screw box, the baffle is arranged at the bottom of the nut and extends into the piston chamber, and the trigger switch is arranged on the baffle and corresponds to the piston.

[0012] Preferably, a limiting block for blocking the piston is provided at the rear side of the water inlet hole in the piston cavity.

[0013] Preferably, a handle is provided at the top end of the valve stem.

[0014] (III) Beneficial effects

[0015] The present invention provides an automatic closing water-saving valve, which has the following beneficial effects:

[0016] 1. For this automatic closing water-saving valve, when the valve starts to supply water, the side water hole will simultaneously inject water into the piston cavity, and the piston will be squeezed toward the partition by water pressure, so that the gas will be squeezed into the airbag, and the airbag will expand and squeeze the spring until it contacts the trigger switch. The trigger switch triggers the electromagnet to energize the rack to drive the valve core to rotate 90° in the opposite direction, thereby closing the valve.

[0017] 2. For this automatic closing water-saving valve, when the valve is closed, one of the water holes passes through the connecting pipe and the side water hole passes through the water outlet interface. Since the water in the piston cavity loses the support of the water supply pressure, the piston begins to slowly squeeze the water in the piston cavity out of the piston cavity under the squeezing of the spring and the air pressure in the airbag. The water flowing out of the piston cavity can be used to clean the hands after closing the valve, avoiding bacterial infection after touching the valve and improving the cleanliness of the hands. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is an external axonometric view of the present invention;

[0019] Figure 2 This is a disassembled diagram of the chamber top of the present invention;

[0020] Figure 3 A half-section schematic diagram of a valve sleeve of the present invention;

[0021] Figure 4 It is a side cross-sectional schematic diagram of the chamber of the present invention;

[0022] Figure 5 This is a diagram of the initial state of water flow of the present invention;

[0023] Figure 6 It is a state diagram of water flow for a period of time of the present invention;

[0024] Figure 7 This is a diagram of the valve core closed state of the present invention.

[0025] In the figure: 1 valve, 11 valve sleeve, 12 water inlet interface, 13 water outlet interface, 14 valve core, 15 water hole, 16 side water hole, 17 valve stem, 18 handle, 19 connecting pipe, 2 trigger mechanism, 21 chamber, 22 partition, 23 piston chamber, 24 accommodating chamber, 25 piston, 26 water inlet hole, 27 air bag, 28 top plate, 29 spring, 30 air hole, 3 closing mechanism, 31 shell, 32 gear, 33 rack, 34 guide rail, 35 electromagnet, 36 trigger switch, 4 delay mechanism, 41 screw box, 42 adjusting screw, 43 nut, 44 baffle, 5 limit block. DETAILED DESCRIPTION

[0026] The embodiment of the present invention provides an automatic closing water-saving valve, such as Figure 1-7 As shown, the valve 1 includes a valve sleeve 11 and a valve core 14 adapted in the valve sleeve 11. The front and rear ends of the valve sleeve 11 are provided with a water inlet interface 12 and a water outlet interface 13. The water inlet interface 12 is used to connect to the water inlet main pipe, and the water outlet interface 13 is used to connect to the household water pipe or is provided on a specific water pipe. The valve core 14 is provided with two water holes 15 that can pass through the water inlet interface 12 and the water outlet interface 13. When the two water holes 15 pass through the water inlet interface 12 and the water outlet interface 13 front and back, it is in a water-passing state. The valve core 14 is provided with a valve stem 17 for controlling its rotation. A handle 18 is provided at the top of the valve stem 17. The valve core 14 can be manually opened or closed by the handle 18. The shape of the handle 18 is not specifically limited.

[0027] The valve further comprises a trigger mechanism 2 and a closing mechanism 3.

[0028] like Figure 2As shown, the specific trigger mechanism 2 includes a long chamber 21, a piston 25, an airbag 27, a top plate 28 and a spring 29. The chamber 21 is divided into a piston chamber 23 and a receiving chamber 24 by a partition 22. The piston chamber 23 is a closed chamber. The piston 25 is piston-type and fits in the piston chamber 23. The stroke of the piston 25 in the piston chamber 23 can be determined according to actual conditions and can be long or short. The top plate 28 is fit in the receiving chamber 24, and one end is connected to the end of the receiving chamber 24 through a spring 29. One end of the airbag 27 is fixed on the partition 22, and the other end is fixed on the top plate 28. The partition 22 is provided with an air hole 30 that passes through the piston chamber 23 and the airbag 27. When the piston 25 moves toward the partition 22, the air in the piston chamber 23 can be squeezed into the airbag 27. When the airbag 27 is filled with air and expands, it will push the top plate 28 to squeeze the spring 29.

[0029] like Figure 2 As shown, a stopper 5 for blocking the piston 25 is provided at the rear side of the water inlet hole 26 in the piston cavity 23 to prevent the piston 25 from blocking the water inlet hole 26 so that the water in the valve core 14 can enter the piston cavity 23 normally.

[0030] like Figure 3 As shown, the valve core 14 is provided with a side water hole 16 at a 90° direction between the two water holes 15, the head of the piston cavity 23 is provided with a water inlet hole 26, and the valve sleeve 11 is provided with a connecting pipe 19 passing through the side water hole 16 and the water inlet hole 26 at a 90° direction between the water inlet interface 12 and the water outlet interface 13. The size of the side water hole 16 is determined based on the time it takes to fill the piston cavity 23, and the size of the side water hole 16 is set according to the required timing time.

[0031] like Figure 3 and Figure 5 As shown, when the valve core 14 is in a water-passing state, the two water holes 15 penetrate the water inlet interface 12 and the water outlet interface 13 , and a portion of the water entering the valve core 14 from the water inlet interface 12 can enter the piston chamber 23 through the side water hole 16 and the connecting pipe 19 .

[0032] When the valve core 14 rotates 90° counterclockwise, Figure 7 As shown, the water inlet interface 12 is blocked, and the side water hole 16 faces the water outlet interface 13, and one of the water holes 15 faces the connecting pipe 19, so that the water in the piston cavity 23 can enter the water outlet interface 13 through the water hole 15 and the side water hole 16.

[0033] like Figure 2 As shown, a trigger switch 36 corresponding to the piston 25 is provided on the partition plate 22 , and the trigger switch 36 is used to trigger the closing mechanism 3 to control the rotation of the valve stem 17 .

[0034] Specifically, Figure 3As shown, the closing mechanism 3 includes a housing 31, a gear 32, a rack 33, and a guide rail 34. The housing 31 is fixed on the valve sleeve 11, the guide rail 34 is horizontally arranged in the housing 31, the rack 33 is slidably adapted on the guide rail 34, the gear 32 is coaxially arranged on the valve stem 17 and meshes with the rack 33, and an electromagnet 35 corresponding to the rack 33 is arranged at the end of the guide rail 34. The rack 33 is a magnetic body. When the electromagnet 35 is energized, the magnetic poles of the electromagnet 35 and the side corresponding to the rack 33 are the same, and the magnetic poles of the electromagnet 35 and the side corresponding to the rack 33 can also be opposite, which is determined by the side water hole 16 on the valve core 14 and the setting orientation of the trigger mechanism 2. When the side corresponding to the electromagnet 35 and the rack 33 is set to have opposite magnetic poles, the rack 33 can be made of iron. The trigger switch 36 is used to control the power supply of the electromagnet 35. The trigger switch 36 and the electromagnet 35 are connected in series on the same circuit. A main switch that can cut off the power supply can be set on the circuit. When the automatic water-saving shut-off function is not needed, the main switch can be cut off. Even if the trigger switch 36 is triggered, the electromagnet 35 will not be energized. In other words, the valve 1 can also be used as a conventional valve.

[0035] The travel limits of the rack 33 at both ends on the guide rail 34 are converted into a positive and negative rotation of the gear 32 of 90 degrees. When the rack 33 contacts one end on the guide rail 34, the two water holes 15 connect the water inlet interface 12 and the water outlet interface 13, and the side water hole 16 connects the water inlet hole 26; when the rack 33 contacts the other end on the guide rail 34, the side water hole 16 connects the water outlet interface 13, and one of the water holes 15 connects the water inlet hole 26.

[0036] The chamber 21 is provided with a delay mechanism 4 , and the trigger switch 36 is provided on the delay mechanism 4 . The delay mechanism 4 can drive the trigger switch 36 to move and adjust the position along the length direction in the piston chamber 23 .

[0037] like Figure 1 and Figure 4 As shown, the delay mechanism 4 includes a screw box 41, an adjusting screw 42, a nut 43 and a baffle 44. The screw box 41 is arranged on the chamber 21 and arranged along the length direction of the piston chamber 23. The screw box 41 is sealed on three sides except for the side in contact with the chamber 21, which is connected to the chamber 21. The adjusting screw 42 is pivoted in the screw box 41 through a bearing seat, and one end of the adjusting screw 42 extends to the outside of the screw box 41, and a crank or a motor is provided. The nut 43 is threadedly adapted outside the adjusting screw 42 and slides along the length direction of the screw box 41. Rotating the adjusting screw 42 can control the nut 43 to move along the length direction of the screw box 41. The baffle 44 is arranged at the bottom of the nut 43 and extends into the piston chamber 23. The trigger switch 36 is arranged on the baffle 44 and corresponds to the piston 25. The length of the delayed closing time can be adjusted by adjusting the position of the baffle 44.

[0038] Usage scenario 1: It can be applied to the main water pipes entering the community. When the water supply is cut off, the main switch power of the device can be turned on by the property management.

[0039] Use scenario 2: Automatic irrigation in agriculture and forestry can avoid the operator having to wait and achieve automatic shutdown.

[0040] Usage scenario three: In public places, after closing the valve after using water, there is still residual water in the piston chamber 23 for washing hands, so that hands can be rinsed after closing the valve, avoiding bacterial infection after contact with the valve, and improving the cleanliness of hands.

[0041] Working principle: After turning on the main switch power of the trigger switch 36, when the valve core 14 is rotated to Figure 3 When the state shown in FIG. 1 is reached, water supply starts, and at the same time, the side water hole 16 simultaneously injects water into the piston chamber 23, as shown in FIG. Figure 5 As shown, the piston 25 is pressed toward the partition 22 by water pressure, and the gas in the piston chamber 23 is pressed into the airbag 27, causing the airbag 27 to expand. The expanded airbag 27 presses the top plate 28 to move and compresses the spring 29. Figure 6 As shown, when the piston 25 moves to contact the trigger switch 36, the electromagnet 35 is energized to slide the rack 33 toward the other end, thereby driving the valve core 14 to rotate 90° counterclockwise, thereby closing the valve 1. Figure 7 As shown, after the valve 1 is closed, one of the water holes 15 penetrates the connecting pipe 19, and the side water hole 16 penetrates the water outlet interface 13. As the water in the piston chamber 23 loses the support of the water supply pressure, the piston begins to move forward under the pressure of the spring 29 and the air pressure in the air bag 27. Figure 7 The left movement shown slowly squeezes the water in the piston chamber 23 out of the piston chamber 23 until it contacts the stop block 5. After closing the valve 1, the water flowing out of the piston chamber 23 can be used to clean the hands after closing the contact valve.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic closing water-saving valve, comprising a valve (1), the valve (1) comprising a valve sleeve (11) and a valve core (14) adapted in the valve sleeve (11), the valve sleeve (11) being provided with a water inlet interface (12) and a water outlet interface (13) at the front and rear ends, the valve core (14) being provided with two water holes (15) which can pass through the water inlet interface (12) and the water outlet interface (13), the valve core (14) being provided with a valve stem (17) for controlling the rotation thereof, characterized in that: The device also comprises a trigger mechanism (2) and a closing mechanism (3). The trigger mechanism (2) comprises a long chamber (21), a piston (25), and a gas collection and release assembly. The chamber (21) is divided into a piston chamber (23) and a receiving chamber (24) by a partition (22). The piston (25) is movably adapted in the piston chamber (23). The partition (22) is provided with an air hole (30) that passes through the piston chamber (23) and the gas collection and release assembly. The valve core (14) is located between the two water holes (15). A side water hole (16) is provided at a 90° direction between the piston chamber (23); a water inlet hole (26) is provided at the head of the piston chamber (23); a connecting pipe (19) penetrating the side water hole (16) and the water inlet hole (26) is provided on the valve sleeve (11) at a 90° direction between the water inlet interface (12) and the water outlet interface (13); a trigger switch (36) corresponding to the piston (25) is provided on the partition (22); the trigger switch (36) is used to trigger the closing mechanism (3) to control the rotation of the valve stem (17).

2. The automatic closing water-saving valve according to claim 1, characterized in that: The gas collection and release assembly comprises an air bag (27), a top plate (28) and a spring (29); the top plate (28) is movably adapted in the accommodating chamber (24), and one end of the top plate is connected to the end of the accommodating chamber (24) through the spring (29); one end of the air bag (27) is fixed on the partition (22) and communicated with the air hole (30), and the other end is fixed on the top plate (28).

3. The automatic closing water-saving valve according to claim 1, characterized in that: The closing mechanism (3) comprises a housing (31), a gear (32), a rack (33), and a guide rail (34); the housing (31) is fixed on the valve sleeve (11); the guide rail (34) is horizontally arranged in the housing (31); the rack (33) is slidably fitted on the guide rail (34); the gear (32) is coaxially arranged on the valve stem (17) and meshes with the rack (33); an electromagnet (35) corresponding to the rack (33) is arranged at the end of the guide rail (34); the rack (33) is a magnetic body; when the electromagnet (35) is energized, the magnetic poles of the electromagnet (35) and the rack (33) are the same; the trigger switch (36) is used to control the energization of the electromagnet (35).

4. The automatic closing water-saving valve according to claim 1, characterized in that: The chamber (21) is provided with a delay mechanism (4), and the trigger switch (36) is provided on the delay mechanism (4). The delay mechanism (4) can drive the trigger switch (36) to move along the length direction in the piston chamber (23) to adjust the position.

5. The automatic closing water-saving valve according to claim 4 is characterized in that: The delay mechanism (4) comprises a screw box (41), an adjusting screw (42), a nut (43) and a baffle (44); the screw box (41) is arranged on the chamber (21) and arranged along the length direction of the piston chamber (23); the adjusting screw (42) is pivotally connected to the screw box (41) through a bearing seat; the nut (43) is threadedly adapted outside the adjusting screw (42) and slidably adapted along the length direction of the screw box (41); the baffle (44) is arranged at the bottom of the nut (43) and extends into the piston chamber (23); the trigger switch (36) is arranged on the baffle (44) and corresponds to the piston (25).

6. The automatic closing water-saving valve according to claim 5, characterized in that: A limiting block (5) for blocking the piston (25) is arranged at the rear side of the water inlet hole (26) in the piston cavity (23).

7. The automatic closing water-saving valve according to claim 1, characterized in that: A handle (18) is provided at the top end of the valve stem (17).

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