Leakage-proof water valve

Abstract

The utility model discloses a leakage-proof water valve, and mainly relates to the technical field of valves. Comprising a shell, a water flow channel is formed in the shell, an electric ball valve used for controlling connection and disconnection of the water flow channel is arranged on the shell, a water wheel is arranged in the water flow channel, a generator is arranged on the shell, a mounting base is arranged at the top of the generator, a disc is arranged at the top of the mounting base, and a pointer is arranged at the top of the disc. An annular cathode, an annular anode and a rotating shaft are arranged on the disc, the axis of the rotating shaft, the axis of the annular cathode and the axis of the annular anode coincide, a cathode electric brush matched with the annular cathode and an anode electric brush matched with the annular anode are arranged at the bottom of the pointer, and a plurality of insulating sheets are evenly arranged on the top of the disc in the circumferential direction of the disc. A detection circuit is arranged between every two adjacent insulating sheets and located between the annular cathode and the annular anode. When the water outlet end leaks water, water flow can be closed in a low-cost mode without being connected with an external circuit.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a water valve for preventing water leakage. Background Art

[0002] At present, the existing water valves for preventing water leakage usually work by monitoring the water leakage volume, that is, by monitoring the water flow or by monitoring whether the house is flooded to control the water shut-off or alarm. However, the method of monitoring the water flow has certain defects. Since the water consumption is relatively large during some periods in the family, when the monitored water flow reaches the preset value, it will cause false alarms or the water flow will be cut off; the method of monitoring whether the house is flooded also has defects. When it is detected by the flooding monitor, some furniture or other supplies have already been soaked by water, resulting in property losses; there are also relatively rare cases of water leakage and overflow. Because corresponding drainage and sinks are usually equipped for water use, there is a situation where the water flow directly enters the sewer without being noticed, resulting in waste of water resources and property losses; the water flow monitoring is through single-stage monitoring, there are fluctuation errors. In addition, the water leakage prevention device can also appear in the form of smart home, but it requires an external power supply and the cost is relatively high. Content of the Utility Model

[0003] The purpose of the utility model is to solve the problems existing in the prior art, and provide a water valve for preventing water leakage, which can close the water flow in a form with relatively low cost and without connecting an external circuit when water leaks at the water outlet end.

[0004] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0005] The water valve for preventing water leakage includes a housing. A water flow channel is arranged in the housing. An electric ball valve for controlling the on-off of the water flow channel is arranged on the housing. A water wheel is arranged in the water flow channel. A generator is arranged on the housing. The support shaft of the water wheel extends out of the housing, and the support shaft of the water wheel is in transmission connection with the generator. An installation seat is arranged at the top of the generator. A disc is arranged at the top of the installation seat. A pointer is arranged at the top of the disc. One end of the pointer is fixedly provided with a rotating shaft. The bottom end of the rotating shaft is inserted into the installation seat. The rotating shaft is rotationally connected with the disc and / or the installation seat. A permanent magnet is arranged on the inner wall of the installation seat. A coil is arranged at one end of the rotating shaft inserted into the installation seat. A storage battery, the coil and the generator are connected in series. A ring-shaped cathode and a ring-shaped anode are arranged on the disc. The axis lines of the rotating shaft, the ring-shaped cathode and the ring-shaped anode coincide. A cathode brush adapted to the ring-shaped cathode and an anode brush adapted to the ring-shaped anode are arranged at the bottom of the pointer. A plurality of insulating sheets are evenly arranged along the circumferential direction of the disc at the top of the disc. One ends of the insulating sheets converge at the center of the disc. A detection circuit is arranged between adjacent two insulating sheets. The detection circuit is located between the ring-shaped cathode and the ring-shaped anode.

[0006] Preferably, one end of the support shaft of the water wheel extends out of the housing and is provided with a first belt pulley, and the input shaft of the generator is provided with a second belt pulley. The second belt pulley is in transmission connection with the first belt pulley through a transmission belt.

[0007] Preferably, a stop pin adapted to the pointer is provided at one of the insulating sheets.

[0008] Preferably, the detection circuit includes a zener diode, a capacitor, a resistor, a first switch, a second switch, a ring-shaped cathode, a ring-shaped anode and a pointer to form a first switch. The zener diode is connected in parallel with the electric ball valve and then connected in series with the capacitor, the first switch and the storage battery. The resistor is connected in series with the first switch and the storage battery. The second switch is connected in series with the zener diode and the storage battery.

[0009] Preferably, the water flow channel is in an "Ω" shape, the electric ball valve is arranged in the middle of the water flow channel, and a water wheel is arranged on both the front and rear sides of the electric ball valve. The support shafts of the two water wheels are in transmission connection with the generator through the same transmission belt.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] The present invention provides a leak-proof water valve adopting a monitoring technology for monitoring water flow conditions. It is installed on the water pipe of a household entrance, converts the water flow rate into an electric signal, monitors the water flow conditions by monitoring the fluctuation of the electric signal, closes the water valve when preset conditions are reached to achieve the purpose of leak prevention, and at the same time does not need to be connected to an external circuit and completes this purpose through self-generation. When water leaks at the water outlet end, the water flow can be closed in a form with relatively low cost and without connecting to an external circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is one of the structural schematic diagrams of the present invention;

[0013] Figure 2 is another structural schematic diagram of the present invention;

[0014] Figure 3 is one of the structural schematic diagrams of the disc of the present invention;

[0015] Figure 4 is another structural schematic diagram of the disc of the present invention;

[0016] Figure 5 is the connection structural schematic diagram of the disc;

[0017] Figure 6 is the circuit diagram of the detection circuit.

[0018] Reference numerals in the drawings: 1, housing; 2, electric ball valve; 3, water turbine; 31, first pulley; 4, generator; 41, second pulley; 42, transmission belt; 5, mounting seat; 6, disc; 7, pointer; 8, rotating shaft; 9, permanent magnet; 10, coil; 11, storage battery; 12, annular cathode; 13, annular anode; 14, cathode brush; 15, anode brush; 16, insulating sheet; 17, detection circuit; 18, stop pin. Detailed implementation manners

[0019] The following further elaborates on the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by this application.

[0020] Embodiment: As shown in the attached Figure 1-6 figures, the water leakage prevention valve described in the present utility model includes a housing 1. A water flow channel is provided inside the housing 1. One end of the water flow channel is an inlet, and the other end is an outlet. An electric ball valve 2 for controlling the on-off of the water flow channel is provided on the housing 1. A water turbine 3 is provided inside the water flow channel. The support shaft of the water turbine 3 extends out of the housing 1, and the support shaft of the water turbine 3 is in transmission connection with the generator 4. The support shaft is rotatably connected to the housing 1. A mounting seat 5 is fixedly provided on the top of the generator 4. A disc 6 is provided on the top of the mounting seat 5. A pointer 7 is provided on the top of the disc 6. One end of the pointer 7 is fixedly provided with a rotating shaft 8. The bottom end of the rotating shaft 8 is inserted into the mounting seat 5. The rotating shaft 8 is rotatably connected to the disc 6 and / or the mounting seat 5. A columnar cavity is provided inside the mounting seat 5. A permanent magnet 9 is provided on the inner wall of the mounting seat 5. A coil 10 is provided at the end of the rotating shaft 8 inserted into the mounting seat 5. The storage battery 11, the coil 10, and the generator 4 are connected in series. An annular cathode 12 and an annular anode 13 are provided on the disc 6. The axis lines of the rotating shaft 8, the annular cathode 12, and the annular anode 13 coincide. A cathode brush 14 adapted to the annular cathode 12 and an anode brush 15 adapted to the annular anode 13 are provided at the bottom of the pointer 7. A plurality of insulating sheets 16 are evenly provided along the circumference of the disc 6 on the top of the disc 6. The disc 6 is divided into several intervals by the insulating sheets 16. One end of the insulating sheet 16 converges at the center of the disc 6. A detection circuit 17 is provided between adjacent two insulating sheets 16. The detection circuit 17 is located between the annular cathode 12 and the annular anode 13.

[0021] Preferably, a first pulley 31 is provided at the end of the support shaft of the water turbine 3 extending out of the housing 1. A second pulley 41 is provided on the input shaft of the generator 4. The second pulley 41 is in transmission connection with the first pulley 31 through a transmission belt 42.

[0022] Preferably, a needle stop 18 adapted to the pointer 7 is provided at one of the insulating sheets 16.

[0023] Preferably, the detection circuit 17 includes a zener diode, a capacitor, a resistor, a first switch, and a second switch. The annular cathode 12, the annular anode 13, and the pointer 7 form the first switch. The zener diode is connected in parallel with the electric ball valve 2 and then connected in series with the capacitor, the first switch, and the storage battery 11. The resistor is connected in series with the first switch and the storage battery 11. The second switch is connected in series with the zener diode and the storage battery 11.

[0024] Preferably, the water flow channel is in an "Ω" shape. The electric ball valve 2 is arranged in the middle of the water flow channel. A water turbine 3 is arranged on both the front and rear sides of the electric ball valve 2. The support shafts of the two water turbines 3 are connected to the generator 4 through the same transmission belt 42. The two water turbines 3 monitor the water flow twice and are connected in series with each other through the transmission belt 42, which can reduce the influence caused by water flow fluctuations.

[0025] When the utility model is in use, the water flow drives the water turbine 3 to rotate. Through the transmission of the first pulley 31, the transmission belt 42, and the second pulley 41, the generator 4 is driven to generate electricity. The generated electricity is stored in the storage battery 11. The structure of the disc 6 is similar to that of an ammeter. The storage battery 11, the coil 10, and the generator 4 are connected in series. The faster the water flow, the higher the generated current, forming a positive correlation between the deflection angle of the pointer 7 and the water flow velocity. When the water flow speed is fixed and reaches a certain time (i.e., the water leakage state), the deflection angle of the pointer 7 is fixed and points to one of the intervals on the disc 6. When staying in one of the intervals, the current passes through the annular cathode 12, the annular anode 13, and the pointer 7 (attached Figure 6 with the first switch S1 led out from the anode of the storage battery therein). When the pointer 7 points, the first switch S1 is closed. When it is stable in an interval, the capacitor starts to store electricity and the circuit voltage starts to rise. At this time, the zener diode is like a wire, short-circuiting the electric ball valve 2. When reaching the voltage of the zener diode, the zener diode opens the circuit, and the current directly reaches the electric ball valve 2 to close the water flow (stop water leakage). When the water flow speed fluctuates (i.e., cross-interval fluctuation) and the interval is not pointed to by the pointer 7, at this time, the capacitor discharges, and the capacitor current is quickly consumed through the resistor. When the water flow is closed, the pointer 7 does not deflect, and the pointer 7 hits the needle stop 18, short-circuiting all the capacitors for the next charge storage. When the water flow is closed, the second switch S2 can be long-pressed Figure 6 to discharge the current of the storage battery 11, reopen the electric ball valve 2, and restore the water flow for convenient use next time.

Claims

1. A water valve for preventing water leakage, comprising a housing (1), characterized in that: A water flow channel is provided in the shell (1), an electric ball valve (2) for controlling the on-off of the water flow channel is provided on the shell (1), a water wheel (3) is provided in the water flow channel, a generator (4) is provided on the shell (1), a support shaft of the water wheel (3) protrudes outward from the shell (1), and the support shaft of the water wheel (3) is transmission-connected with the generator (4), a mounting seat (5) is provided on the top of the generator (4), a disc (6) is provided on the top of the mounting seat (5), a pointer (7) is provided on the top of the disc (6), a rotating shaft (8) is fixedly provided at one end of the pointer (7), the bottom end of the rotating shaft (8) is inserted into the mounting seat (5), the rotating shaft (8) is rotationally connected with the disc (6) and / or the mounting seat (5), a permanent magnet (9) is provided on the inner wall of the mounting seat (5), and the rotating shaft (8) is inserted into the mounting seat (5). A coil (10) is provided at one end of the mounting seat (5), and the storage battery (11), the coil (10) and the generator (4) are connected in series. An annular cathode (12) and an annular anode (13) are provided on the disk (6), and the axis lines of the rotating shaft (8), the annular cathode (12) and the annular anode (13) coincide with each other. A cathode brush (14) adapted to the annular cathode (12) and an anode brush (15) adapted to the annular anode (13) are provided at the bottom of the pointer (7). A plurality of insulating sheets (16) are evenly provided at the top of the disk (6) along the circumference of the disk (6), and one end of the insulating sheets (16) converges at the center of the disk (6). A detection circuit (17) is provided between two adjacent insulating sheets (16), and the detection circuit (17) is located between the annular cathode (12) and the annular anode (13).

2. The anti-leakage water valve according to claim 1, characterized in that: A first pulley (31) is provided at one end of the support shaft of the water wheel (3) extending outward from the housing (1), and a second pulley (41) is provided on the input shaft of the generator (4), and the second pulley (41) is connected to the first pulley (31) through a transmission belt (42).

3. The anti-leakage water valve according to claim 1, characterized in that: A needle stopper (18) adapted to the pointer (7) is provided at one of the insulating sheets (16).

4. The anti-leakage water valve according to claim 1, characterized in that: The detection circuit (17) comprises a voltage-stabilizing diode, a capacitor, a resistor, a first switch and a second switch. The annular cathode (12), the annular anode (13) and the pointer (7) form the first switch. The voltage-stabilizing diode is connected in parallel with the electric ball valve (2) and then connected in series with the capacitor, the first switch and the storage battery (11). The resistor is connected in series with the first switch and the storage battery (11). The second switch is connected in series with the voltage-stabilizing diode and the storage battery (11).

5. The anti-leakage water valve according to claim 1 or 2, characterized in that: The water flow channel is in an "Ω" shape, the electric ball valve (2) is arranged in the middle of the water flow channel, a water wheel (3) is arranged on both the front and rear sides of the electric ball valve (2), and the support shafts of the two water wheels (3) are connected to the generator (4) through the same transmission belt (42).

Images