CN215227094U

CN215227094U - Device integrating water and soap liquid by inductive switch

Info

Publication number: CN215227094U
Application number: CN202120661180.3U
Authority: CN
Inventors: 陈康; 李学习; 谭芝; 袁琼
Original assignee: Foshan Xiaopu Technology Co ltd
Current assignee: Rongguizhijian Guangdong Technology Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-12-21
Anticipated expiration: 2031-03-31

Abstract

The utility model discloses an induction switch water and soap lye integrated device, which comprises a first half shell, a second half shell, a power supply, a solenoid valve, a pump, a circuit board and an infrared emission receiving tube; the first half shell and the second half shell are connected through screws to form a shell, the electromagnetic valve, the pump and the circuit board are arranged in the shell, an outlet and an inlet are formed in the shell, the electromagnetic valve and the pump are connected with water and washing liquid through the outlet and the inlet, and the second half shell is in threaded connection with the washing liquid bottle. The design of automatically sensing water outlet and automatically sensing washing liquid is convenient for people to use.

Description

Device integrating water and soap liquid by inductive switch

Technical Field

The utility model relates to a tap, especially an induction tap.

Background

At present, water faucets on the market have automatic water opening and closing, but the washing liquid needs to be squeezed again by hands when people want to wash hands or dishes, the process wastes time, and sometimes the washing liquid can not be found when people want the washing liquid, or the washing liquid placed beside can be turned over carelessly, and unnecessary troubles can be brought to people.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art problem, the utility model provides an integrative device of inductive switch water and soap lye, washing liquid and play water installation establish as an organic wholely, and all are infrared inductive switch, do not need the contact, also are used for not finding the washing liquid and vexed.

In order to realize the above purpose, the utility model discloses the technical scheme who adopts as follows:

according to the utility model discloses a first aspect embodiment, an integrative device of inductive switch water and soap lye, include: the electromagnetic valve is provided with a water outlet and a water inlet, the water outlet is communicated with the first outlet, and the water inlet is communicated with the first inlet; the pump is provided with a liquid inlet pipe and a first section of liquid outlet pipe, the first section of liquid outlet pipe is communicated with the second outlet, and the liquid inlet pipe is communicated with the second inlet; the circuit board, the circuit board includes tap detection module, washing liquid control module, solenoid valve drive module, tap detection module with washing liquid detection module is used for detecting external signal, tap detection module is through detecting external signal control solenoid valve drive module goes out water, washing liquid detection module is through detecting external signal control washing liquid control module goes out the washing liquid.

According to the utility model discloses integrative device of inductive switch water and soap lye has following beneficial effect at least: the device box is controlled by the infrared switch to control the water path switch of the electromagnetic valve and the switch of the washing liquid pump, and the washing liquid and the water outlet structure are integrated, so that people can conveniently take the washing liquid during hand washing, and the device is suitable for various occasions.

According to the utility model discloses a some embodiments, including outlet pipe and second section drain pipe, the delivery port of solenoid valve is connected the one end of outlet pipe, the one end of second exit linkage second section drain pipe.

According to some embodiments of the present invention, including tap, bubbler, tap includes tap end and stay tube, tap end with the stay tube is the cylinder, stay tube one end intercommunication the side of tap end. The bubbler communicates with one end of the tap end, the other end of the water outlet pipe communicates with the support pipe and one end of the tap end is connected with the bubbler, and one end of the second section of the liquid outlet pipe communicates with the support pipe and the other end of the tap end.

According to some embodiments of the utility model, including the wash platform, the stay tube other end threaded connection wash platform.

According to some embodiments of the utility model, the other first through-hole of establishing of bubbler, the tap end other end the other second through-hole of establishing of second section drain pipe, the fixed first light filter of first through-hole, the fixed second light filter of second through-hole, tap detection module includes first infrared emission receiver tube, washing liquid detection module includes second infrared emission receiver tube, first infrared emission receiver tube passes through stay tube is inside to be located in the first light filter, second infrared emission receiver tube passes through stay tube is inside to be located in the second light filter.

According to some embodiments of the present invention, the circuit board is disposed in a potting box, and the potting box uses epoxy to seal the circuit board for waterproofing and moistureproof purposes; the circuit board is provided with a main control chip, and the main control chip is connected with and controls the faucet detection module, the washing liquid control module and the electromagnetic valve driving module.

According to some embodiments of the utility model, tap detection module includes first MOS pipe and first infrared emission receiver tube, first infrared emission receiver tube includes first opto-coupler, first MOS pipe grid connects main control chip pin 9 through fourth resistance, first MOS pipe grid and source electrode series connection fifth resistance, first MOS pipe drain electrode connects first opto-coupler pin 1 through sixth resistance, first opto-coupler pin 2, pin 3 are connected to connect first output power source, first opto-coupler output end pin 4 connects main control chip pin 8 to through seventh resistance ground connection.

According to some embodiments of the utility model, washing liquid control module is equipped with the second steady voltage chip, second steady voltage chip pin 1 connects the system power, and pin 3 output second output power, second steady voltage chip input/output end all connects filter capacitor, second output power connects the positive pole of pump, still is equipped with the third MOS pipe, the third MOS pipe grid connects main control chip pin 3 through twelfth resistance, third MOS pipe grid and source electrode series connection thirteenth resistance, the third MOS pipe drain electrode connects the negative pole of pump, the switch of control pump.

According to some embodiments of the utility model, the washing liquid detects the mould and includes second MOS pipe and second infrared emission receiver tube, second infrared emission receiver tube includes the second opto-coupler, the second MOS pipe grid connects main control chip pin 5 through eighth resistance, second MOS pipe grid and source series connection ninth resistance, the second MOS pipe drain electrode connects second opto-coupler pin 1 through tenth resistance, second opto-coupler pin 2, pin 3 are connected to connect first output power source, second opto-coupler output pin 4 connects main control chip pin 6 to through eleventh resistance ground connection.

According to some embodiments of the utility model, solenoid valve drive module is equipped with driver chip, driver chip pin 2 connects main control chip pin 7, driver chip pin 3 connects main control chip pin 4, driver chip pin 4 connects the system power, driver chip pin 5, pin 8 connect two electrodes of solenoid valve.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a front view of the present invention;

fig. 2 is an exploded view of the present invention;

fig. 3 is an exploded bottom view of the present invention;

FIG. 4 is an exploded top view of the new housing;

fig. 5 is a power supply circuit diagram of the present invention;

FIG. 6 is a schematic diagram of the main control chip of the present invention;

fig. 7 is a water tap detection module of the present invention;

FIG. 8 is a washing liquid detection module of the present invention;

FIG. 9 is a cleaning solution control module of the present invention;

fig. 10 is a solenoid valve driving module of the present invention;

FIG. 11 is a low power detection of the present invention;

fig. 12 is the induction indicating lamp of the present invention.

Reference numerals: a first housing half 1; a second half-shell 2; a bottle 3; a power supply box 4; an electromagnetic valve 5; a pump 6; a liquid inlet pipe 7; a first section of liquid outlet pipe 8; a first outlet 9; a second outlet 10; a water outlet 11; a water inlet 12; a first inlet 13; a second inlet 14; a glue pouring box 15; a first infrared emission-receiving tube 17; a second infrared emission receiving tube 18; a screw 19; a hand washing station 20; a second section of liquid outlet pipe 22; a water outlet pipe 23; a bubbler 201; a liquid outlet 202; a first filter 203; a second filter 204; a head of the thread 205; support the tube 206.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following description of the embodiments of the present invention with reference to the accompanying drawings is provided.

The technical solutions in the embodiments of the present invention will be fully described below, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

According to some embodiments, as shown in fig. 1, an integrated device for inductively switching on and off water and soap comprises a first half shell 1 and a second half shell 2, a bottle 3, a power supply box 4, a first infrared emission receiving tube 17, a second infrared emission receiving tube 18, a second section of liquid outlet tube 22, a water outlet tube 23, a wash basin 20 and a faucet. As shown in fig. 3 and 4, the four corners of the first half case 1 and the second half case 2 are connected by screws 19. Wherein, the shell is internally provided with an electromagnetic valve 5, a pump 6 and a glue pouring box 15. The electromagnetic valve 5 is provided with a water outlet 11 and a water inlet 12, one end of the electromagnetic valve is used for being connected with a water source, the other end of the electromagnetic valve is used for discharging water, the electromagnetic valve 5 plays a role of switching on and off water, the pump 6 is provided with a liquid inlet pipe 7 and a first section of liquid outlet pipe 8, the liquid inlet pipe 7 is connected with a washing liquid, the washing liquid is discharged from the first section of liquid outlet pipe 8 and is used for switching on and off the washing liquid, and the washing liquid can be detergent or hand sanitizer and can be used for washing hands or tableware.

Further, as shown in fig. 3 and 4, the second half casing 2 is provided with a first inlet 13 and a second inlet 14, wherein the water inlet 12 of the electromagnetic valve 5 is provided with an external thread, and the electromagnetic valve 5 is communicated with the first inlet 13 and is used for connecting a water inlet pipe with an internal thread to a water source; the inlet pipe 7 of the pump 6 passes through the second inlet 14 for receiving the washing liquid. Wherein, inside liquid inlet pipe 7 inserted bottle 3, the bottleneck of bottle 3 was equipped with the external screw thread, and second entry 14 is equipped with the internal thread for bottleneck threaded connection second entry 14 of bottle 3, the built-in washing liquid of bottle 3.

Further, as shown in fig. 2, 3 and 4, the first half casing 1 is provided with a first outlet 9 and a second outlet 10, the electromagnetic valve 5 is provided with a water outlet 11, the pump 6 is provided with a first section of liquid outlet pipe 8, the faucet includes a faucet end 205 and a support pipe 206, the faucet end 205 and the support pipe 206 are cylinders, and one end of the support pipe 206 is communicated with the side surface of the faucet end 205. The bubbler 201 is communicated with one end of a tap end 205, the other end of the water outlet pipe 23 is communicated with a supporting pipe 206, and one end of the tap end 205 is connected with the bubbler 201 for water outlet; one end of the second segment of the outlet pipe 22 is connected to the other end of the support pipe 206 and the tap end 205 for discharging the washing liquid. Wherein, the water outlet 11 passes through the first outlet 9 and is connected with the water outlet pipe 23 by screw thread; the first section of liquid outlet pipe 8 is detachably connected with the second outlet 10, and the second outlet 10 is detachably connected with the second section of liquid outlet pipe 22.

According to some embodiments, as shown in fig. 3, a first through hole is formed near the bubbler 201, a second through hole is formed near the second section of the outlet pipe 22 at the other end of the faucet 205, the first through hole is used for fixing the first optical filter 203, and the second through hole is used for fixing the second optical filter 204. The first infrared emission receiving tube 17 is arranged in the first optical filter 203, the second infrared emission receiving tube 18 is arranged in the second optical filter 204 and is used for detecting external signals, the first infrared emission receiving tube 17 detects the external signals to control water outlet, and the second infrared emission receiving tube 18 detects the external signals to control washing liquid outlet.

According to some embodiments, the power box 4 is powered by 4-section 1.5V dry batteries, and the power box 4 is provided with a power circuit, as shown in fig. 4, the power circuit is provided with a diode D1, a first capacitor C1, a second capacitor C2 and a first voltage stabilizing chip U1. The anode of the diode D1 is connected to the anode of the battery, the cathode of the diode D1 is connected to the pin 1 of the first voltage regulation chip U1 through one end of the first capacitor C1, the diode D is used for supplying power to the first voltage regulation chip U1, and the other end of the first capacitor C1 is grounded. The diode D1 is used as a rectification protection Power supply, the Power _ IN is output after being rectified by the diode D1, and the first capacitor C1 is used as filtering. Pin 2 of the first voltage stabilization chip U1 is grounded, pin 3 of the first voltage stabilization chip U1 outputs a first power source DVDD1, and is connected with one end of a second capacitor C2, and the other end of the second capacitor C2 is grounded and used for filtering. The Power supply circuit is used for protecting the system Power supply Power _ IN, stabilizing the voltage and reducing the voltage to a proper voltage to supply to subsequent circuits.

According to some embodiments, as shown in fig. 2 and 4, a potting box 15 is further disposed in the housing, a circuit board is disposed in the potting box 15, the potting box 15 completely seals the circuit board with epoxy resin for waterproof and moisture-proof purposes, and the circuit board connects the first infrared emission receiving tube 17 and the second infrared emission receiving tube 18 and the power supply box 4.

Furthermore, the circuit board is provided with a main control chip U4, and the main control chip U4 is connected with and controls the faucet detection module, the washing liquid control module and the electromagnetic valve driving module. As shown in FIG. 6, the main control chip U4 is powered by a first power source DVDD1 output by the power circuit.

Further, as shown in fig. 7, the faucet detecting module includes a first MOS transistor Q1, a first infrared emission receiving tube 17, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, and a seventh resistor R7, where the first infrared emission receiving tube 17 includes a first optical coupler U2. The grid of the first MOS transistor Q1 is connected with a pin 9 of the main control chip U4 through a fourth resistor R4, and the first MOS transistor Q1 is used for controlling the main control chip U4 to control the first optical coupler U2 to emit infrared signals. The grid and the source of the first MOS transistor Q1 are connected in series with a fifth resistor R5, and the first MOS transistor Q1 is used for a grid discharge loop, can play a role in timely closing and can also prevent external high-level interference. The drain of the first MOS transistor Q1 is connected with one end of a sixth resistor R6, the other end of the sixth resistor R6 is connected with a first optical coupler U2 pin 1, a first optical coupler U2 pin 2 and a pin 3 are connected with each other and connected with a first power supply DVDD1, a first optical coupler U2 pin 4 is connected with a main control chip U4 pin 8 and used for receiving infrared signals by the main control chip U4 and connected with one end of a seventh resistor R7, and the other end of the seventh resistor R7 is grounded and used for a discharging loop.

Further, as shown in fig. 8, the washing liquid detecting module includes a second MOS transistor Q2, a second infrared emission receiving tube 18, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, and an eleventh resistor R11, and the second infrared emission receiving tube 18 includes a second optical coupler U3. The grid electrode of the second MOS tube Q2 is connected with a pin 5 of a U4 of the main control chip through an eighth resistor R8, and the second MOS tube Q2 is used for controlling a second optical coupler U3 to emit infrared signals through the main control chip U4. The grid and the source of the second MOS tube Q2 are connected in series with a ninth resistor R9, and the ninth resistor R9 is used for a grid discharge loop, can play a role in timely closing and can also prevent external high-level interference. The drain of the second MOS transistor Q2 is connected with one end of a tenth resistor R10, the other end of the tenth resistor R10 is connected with a pin 1 of a second optical coupler U3, a pin 2 and a pin 3 of the second optical coupler U3 are connected with each other and connected with a first power supply DVDD1, a pin 4 of a second optical coupler U3 is connected with a pin 6 of a main control chip U4 and used for receiving infrared signals by the main control chip U4 and connected with one end of an eleventh resistor R11, and the other end of the eleventh resistor R11 is grounded and used for a discharging loop.

Further, as shown IN fig. 9, the cleaning solution control module is provided with a second voltage stabilizing chip U5, a third capacitor C3, and a fourth capacitor C4, wherein one end of the third capacitor C3 is connected to pin 1 of the second voltage stabilizing chip U5 and is connected to the system Power supply Power _ IN, pin 2 of the second voltage stabilizing chip U5 is grounded, pin 3 of the second voltage stabilizing chip U5 is connected to one end of the fourth capacitor C4 and outputs a second Power supply DVDD2, the other ends of the third capacitor C3 and the fourth capacitor C4 are grounded and used as a filter, and the second Power supply DVDD2 is connected to the anode of the pump 6. The washing machine is also provided with a third MOS tube Q3, a twelfth resistor R12 and a thirteenth resistor R13, wherein the cathode of the pump 6 is connected with the drain electrode of the third MOS tube Q3, the grid electrode of the third MOS tube Q3 is connected with one end of the twelfth resistor R12, the other end of the twelfth resistor R12 is connected with a pin 3 of a U4 main control chip, and the switch of the washing liquid outlet is controlled by controlling the switch of the pump 6. The gate and the source of the third MOS transistor Q3 are connected in series with a thirteenth resistor R13 for a discharge loop, which plays a role in timely turn-off.

Further, as shown IN fig. 10, the solenoid valve driving module is provided with a driving chip U2, pin 2 of the driving chip U2 is connected to pin 7 of the main control chip U4, pin 3 of the driving chip U2 is connected to pin 4 of the main control chip U4, pin 4 of the driving chip U2 is connected to the Power _ IN of the system Power supply, and is connected to one end of a fifth capacitor C5, and the other end of the fifth capacitor C5 is grounded for filtering. The pin 6 and the pin 7 of the driving chip U2 are grounded, and the pin 5 and the pin 8 of the driving chip U2 are connected with the two end electrodes of the electromagnetic valve 5.

To sum up, the main control chip U4 controls the infrared emission receiving tube to emit infrared signals, when the hand is in the induction area, the hand reflects the infrared emission receiving tube, the main control chip U4 detects the infrared signals reflected back, the main control chip U4 controls the drive chip U2 to drive the electromagnetic valve 5 to open, and the faucet discharges water. When the hand leaves, the electromagnetic valve 5 is closed because the infrared signal reflected by the human body is not detected.

In the embodiment, when washing hands, the hands are placed in the sensing area of the second infrared emission receiving tube 18 to discharge the washing liquid and are closed after leaving, and the hands are placed in the sensing area of the first infrared emission receiving tube 17 to discharge the water and are closed after leaving.

Further, as shown IN fig. 11, the main control chip U4 is provided with a low Power detection portion, the pin 13 of the main control chip U4 is connected to one end of the first resistor R1 and one end of the second resistor R2, the other end of the first resistor R1 is connected to the Power _ IN of the system Power source to be detected, and the other end of the second resistor R2 is grounded.

Further, as shown in fig. 12, the main control chip U4 further has an inductive indicator light detection portion, a pin 11 of the main control chip U4 is connected to the cathode of the light emitting diode D2 through a third resistor R3, and the anode of the light emitting diode D2 is connected to the power DVDD 1. The main control chip U4 controls the on state of the led D2, thereby controlling the led D2 to emit light. When the hand approaches the infrared sensing area, the LED D2 lights, and when the system Power supply Power _ IN voltage is detected to be too low, the LED D2 lights.

It is obvious to a person skilled in the art that the invention is not limited to the exemplary embodiments described above, but that the solution according to the invention can be implemented in other specific forms without departing from the essential characteristics of the invention. Accordingly, the embodiments should be considered as exemplary and non-limiting.

Claims

1. Response goes out water installation, its characterized in that includes:

a shell, wherein a first inlet (13), a second inlet (14), a first outlet (9) and a second outlet (10) are arranged on the shell, the shell comprises a first chamber,

the electromagnetic valve (5) is provided with a water outlet (11) and a water inlet (12), the water outlet (11) is communicated with the first outlet (9), and the water inlet (12) is communicated with the first inlet (13);

the pump (6) is provided with a liquid inlet pipe (7) and a first section of liquid outlet pipe (8), the first section of liquid outlet pipe (8) is communicated with the second outlet (10), and the liquid inlet pipe (7) is communicated with the second inlet (14);

the circuit board, the circuit board includes tap detection module, washing liquid control module, solenoid valve drive module, tap detection module with washing liquid detection module is used for detecting external signal, tap detection module is through detecting external signal control solenoid valve drive module goes out water, washing liquid detection module is through detecting external signal control washing liquid control module goes out the washing liquid.

2. The induction water outlet device according to claim 1, wherein: including outlet pipe (23) and second section drain pipe (22), delivery port (11) of solenoid valve (5) are connected the one end of outlet pipe (23), the one end of second section drain pipe (22) is connected in second export (10).

3. The induction water outlet device according to claim 2, wherein: the faucet comprises a faucet body and a bubbler (201), wherein the faucet body comprises a faucet end (205) and a supporting pipe (206), the faucet end (205) and the supporting pipe (206) are cylindrical, and one end of the supporting pipe (206) is communicated with the side face of the faucet end (205).

The bubbler (201) is communicated with one end of the tap end (205), the other end of the water outlet pipe (23) is communicated with the support pipe (206) and one end of the tap end (205) and is connected with the bubbler (201), and one end of the second section of the liquid outlet pipe (22) is communicated with the support pipe (206) and the other end of the tap end (205).

4. The induction water outlet device according to claim 3, wherein: comprises a wash basin (20), and the other end of the support tube (206) is connected with the wash basin (20) in a threaded manner.

5. The induction water outlet device according to claim 3, wherein: the other first through-hole of establishing of bubbler (201), the other end of tap end (205) the other second through-hole of establishing of second section drain pipe (22), first optical filter (203) is fixed to first through-hole, second optical filter (204) is fixed to the second through-hole, tap detection module includes first infrared emission receiving tube (17), washing liquid detection module includes second infrared emission receiving tube (18), first infrared emission receiving tube (17) pass through stay tube (206) are inside to be located in first optical filter (203), second infrared emission receiving tube (18) pass through stay tube (206) are inside to be located in second optical filter (204).

6. The induction water outlet device according to claim 1, wherein: the circuit board is arranged in the glue filling box (15), and the glue filling box (15) seals the circuit board by using epoxy resin for water and moisture prevention;

the circuit board is provided with a main control chip (U4), and the main control chip (U4) is connected with and controls the faucet detection module, the washing liquid control module and the electromagnetic valve driving module.

7. The induction water outlet device according to claim 6, wherein: the faucet detection module comprises a first MOS (Q1) and a first infrared emission receiving tube (17), wherein the first infrared emission receiving tube (17) comprises a first optical coupler (U2), the grid of the first MOS (Q1) is connected with a pin 9 of a main control chip (U4) through a fourth resistor (R4), the grid and the source of the first MOS (Q1) are connected with a fifth resistor (R5) in series, the drain of the first MOS (Q1) is connected with a pin 1 of a first optical coupler (U2) through a sixth resistor (R6), the pin 2 and the pin 3 of the first optical coupler (U2) are connected and connected with a first output power supply (DVDD1), and the output terminal pin 4 of the first optical coupler (U2) is connected with a pin 8 of the main control chip (U4) and is grounded through a seventh resistor (R7).

8. The induction water outlet device according to claim 6, wherein: the washing liquid control module comprises a second voltage stabilizing chip (U5), wherein a pin 1 of the second voltage stabilizing chip (U5) is connected with a system power supply, a pin 3 outputs a second output power supply (DVDD2), the input and output ends of the second voltage stabilizing chip (U5) are connected with a filter capacitor, the second output power supply (DVDD2) is connected with the anode of a pump (6), a third MOS tube (Q3) is further arranged, the grid of the third MOS tube (Q3) is connected with the pin 3 of the main control chip (U4) through a twelfth resistor (R12), the grid and the source of the third MOS tube (Q3) are connected with a thirteenth resistor (R13) in series, and the drain of the third MOS tube (Q3) is connected with the cathode of the pump (6) to control the switch of the pump (6).

9. The induction water outlet device according to claim 6, wherein: the washing liquid detection module comprises a second MOS (Q2) and a second infrared emission receiving tube (18), the second infrared emission receiving tube (18) comprises a second optical coupler (U3), the grid of the second MOS (Q2) is connected with a pin 5 of a main control chip (U4) through an eighth resistor (R8), the grid and the source of the second MOS (Q2) are connected with a ninth resistor (R9) in series, the drain of the second MOS (Q2) is connected with a pin 1 of a second optical coupler (U3) through a tenth resistor (R10), the pin 2 and the pin 3 of the second optical coupler (U3) are connected and connected with a first output power supply (DVDD1), and the output terminal pin 4 of the second optical coupler (U3) is connected with a pin 6 of the main control chip (U4) and is grounded through an eleventh resistor (R11).

10. The induction water outlet device according to claim 6, wherein: solenoid valve drive module includes driver chip (U2), driver chip (U2) pin 2 connects main control chip (U4) pin 7, driver chip (U2) pin 3 connects main control chip (U4) pin 4, driver chip (U2) pin 4 connects the system power, two electrodes of driver chip (U2) pin 5, pin 8 electricity solenoid valve (5).