CN212177376U - Automatic control device for water pump - Google Patents

Abstract

The utility model relates to a water pump control technical field, concretely relates to water pump control device. The automatic control device for the water pump comprises a device shell, wherein a wiring port is arranged on the device shell, a water pump controller for controlling the water pump to start and stop is arranged in the device shell, the wiring port comprises at least two groups of floating ball wiring ends and at least one load wiring end, and each group of floating ball wiring ends comprises two wiring ports; the water pump controller comprises at least two groups of floating ball control loops, and one group of floating ball control loops correspond to one group of floating ball wiring terminals. Due to the adoption of the technical scheme, the utility model discloses a life of floater can be prolonged greatly to the device, and the floater spoilage is extremely low, has saved operation and maintenance cost greatly. The utility model discloses a through once starting, the mode of many times control ensures the load normal operating under the controllable condition.

Description

Automatic control device for water pump

Technical Field

The utility model relates to a water pump control technical field, concretely relates to water pump control device.

Background

The electric control box used for controlling loads such as water pumps and the like on the market is usually a strong electric box, a plurality of discrete power elements are arranged in the electric control box, a control circuit lead is exposed and easy to touch, and an outer layer plastic insulator is broken to cause poor contact of the control circuit and the existence of an electric shock coefficient. Because the number of control loop wires is large, the control loop wires are very numerous and the skills of maintenance personnel can not keep up with the control loop wires, and the time and the labor are consumed from the inspection to the maintenance after the control loop wires break down, so that the requirements of customers are difficult to meet.

In addition, when loads such as a water pump and the like are controlled, a floating ball is usually adopted as a liquid level controller, the floating ball has the problem of frequent failure, the theoretical value of the electric service life of the floating ball is 10000 times, and the theoretical value of the mechanical service life of the floating ball is 50000 times. However, in practical use, the floating ball usually fails in hundreds of times of work, almost no floating ball in the floating balls crosses a gate for 1000 times, the floating ball cannot normally work after being used for hundreds of times, the time is good, and the maintenance cost is greatly increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a water pump automatic control device solves above technical problem.

The utility model provides a technical problem can adopt following technical scheme to realize:

the automatic control device for the water pump comprises a device shell, wherein a wiring port is arranged on the device shell, a water pump controller for controlling the water pump to start and stop is arranged in the device shell, the wiring port comprises at least two groups of floating ball wiring ends and at least one load wiring end, and each group of floating ball wiring ends comprises two wiring ports;

the water pump controller comprises at least two groups of floating ball control loops, wherein one group of floating ball control loops corresponds to one group of floating ball wiring ends, each group of floating ball control loops comprises a triode and a resistor, an emitting electrode of the triode is connected with a floating ball power supply input end, a base electrode of the triode is connected with one wiring port in the corresponding group of floating ball wiring ends through the resistor, the other wiring port in the group of floating ball wiring ends is grounded, and a collector electrode of the triode is connected with the load wiring end.

The utility model discloses during the use, be connected the float switch both ends passing signal line of floater and two wiring ports of floater wiring end respectively, every floater corresponds a set of floater wiring end. The control terminal of the load is connected to the load terminal. The utility model discloses the during operation is with a floater as starting the floater, when shutting down or not arriving the water level, and water pump controller standby work, after the water level reached the water level point that starts the floater place, the automatic start operation of load, the locking simultaneously. And the other floating ball is used as a middle water level floating ball, and when the water level reaches the water level point where the middle water level floating ball is located, the load is driven to stop running. Through after the above design the utility model discloses, need not the manual work and open and stop water pump control ware, realized the automatic control purpose of water pump. Additionally, the utility model discloses a water pump controller adopts a plurality of independent floater control circuit, realizes floater switch signal's transmission through floater control circuit, and such design can prolong the life of floater greatly, compares with ordinary strong case, and the floater life-span can improve multifold efficiency, and the spoilage is extremely low, has saved operation and maintenance cost greatly. Secondly, the utility model discloses only need carry out independent wiring through the wiring port to floater, load and can work, need not loaded down with trivial details wiring, installation, improvement and maintenance simple and convenient.

Still include another group floater wiring end and another group floater control circuit that corresponds. After the water level arrived the water level point at well water level floater place, if the float switch of well water level floater is malfunctioning or blocked, the load can still continue work this moment, consequently the utility model discloses another group's floater wiring end and the floater control circuit that corresponds have been add. The floating ball switch of the high-low water level floating ball is respectively connected with the two wiring ports of the floating ball wiring terminal, and the load can be driven to stop running again after the water level reaches the highest water level or the lowest water level of the high-low water level floating ball. The above design ensures that the load can run automatically and stop reliably.

The water pump controller also comprises a timer, and the trigger end of the timer is connected with the collector electrode of the triode in one group of the floating ball control loops;

and a timing signal output end of the timer is connected with the load wiring end. When the triode of one of the floating ball control loops outputs a start or stop signal, the timer is driven to start or end timing, the middle water level and high water level floating ball switch fails or is blocked, the water level crosses the middle water level floating ball and the high and low water level floating balls, and after the timing time is up, the load is directly forcibly cut off to stop working. The above design further ensures a reliable stop of the load.

The timer is provided with a timing adjusting potentiometer for adjusting timing time, and the timing adjusting potentiometer is arranged on the surface of the device shell and is provided with an adjusting hole. The time needing to be timed can be adjusted by the timing adjusting potentiometer.

The patch port includes at least two of the load terminals;

the water pump controller also comprises a signal distributor, and a collector electrode of each triode is connected with the signal distributor;

when the water pump controller is provided with the timer, the timing signal output end of the timer is connected with the signal distributor;

at least two signal output ends of the signal distributor are respectively connected with at least two load wiring terminals. The water pump room is more moist usually, uses a water pump work for a long time to cause coil dielectric strength to descend in another water pump motor, leads to the unable use, needs the manual water pump that is used for work of switching according to the cycle, and is comparatively troublesome. Therefore the utility model discloses a set up a plurality of load wiring ends, can insert a plurality of water pump loads, open in proper order and stop a plurality of loads in turn. The utility model discloses an above-mentioned design is applicable in two water pump operational environment, or a plurality of load operational environment, can automatic mutual switch-over through signal distributor.

Each group of floating ball control loops is provided with a luminous warning device, the collector electrode of the triode corresponding to the high and low water level floating ball is connected with the starting control end of a buzzer, and the signal output end of the timer is also connected with another luminous warning device and the stopping control end of the buzzer;

each luminous warning device is arranged on the surface of the device shell, and the buzzer is also arranged on the surface of the device shell and sends out sound by using the time adjusting hole. The current state of the water pump controller is informed through a luminous warning device. The above design of the utility model, can inform water pump controller's user state, can report to the police again when carrying out the forced cutting, whole device has higher rationality.

The wiring ports further comprise power terminals, and the power terminals comprise two wiring ports;

the main power supply input end of the water pump controller is connected with the positive and negative polarity reverse connection protection circuit through the voltage stabilizer, and the positive and negative polarity reverse connection protection circuit is connected with the two wiring ports. The utility model discloses can adopt the special low-voltage of direct current to be the control power supply of water pump controller, through power source with the utility model discloses a power wiring end is connected, adopts 220V's forceful electric power supply to compare with ordinary electric cabinet, and the potential safety hazard when having avoided maintaining for vast maintenance worker ensures to maintain worker life safety.

Has the advantages that: due to the adoption of the technical scheme, the utility model discloses a life of floater can be prolonged greatly to the device, and the floater spoilage is extremely low, has saved operation and maintenance cost greatly. The utility model discloses a through once starting, the mode of many times control ensures the load normal operating under the controllable condition.

Drawings

Fig. 1 is a schematic view of an overall structure of the present invention;

fig. 2 is a schematic circuit diagram of the float control circuit of the present invention;

fig. 3 is a schematic diagram of a signal connection according to the present invention;

fig. 4 is another schematic diagram of the signal connection according to the present invention.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention will be further explained with reference to the specific drawings.

Referring to fig. 1 to 4, the utility model provides a water pump automatic control device, including device casing 9, be equipped with the wiring port on the device casing 9, be equipped with in the device casing 9 and be used for controlling the water pump and open the water pump controller who stops, the wiring port includes at least two sets of floater wiring ends, at least one load wiring end, and every floater wiring end of group all includes two wiring ports. The water pump controller comprises at least two groups of floating ball control loops, one group of floating ball control loops corresponds to one group of floating ball wiring terminals, and the water pump controller can further comprise another group of floating ball wiring terminals and another corresponding group of floating ball control loops during specific use. As shown in fig. 2, each group of floating ball control loops includes a transistor Q and a resistor R, an emitter of the transistor Q is connected to a floating ball power input terminal VDD, a base of the transistor Q is connected to one of a corresponding group of floating ball terminals through the resistor R, another one of the group of floating ball terminals is grounded VSS, and a collector of the transistor Q is connected to a load terminal.

The traditional floating ball usually works under 220V alternating current strong electricity, such as dragging an HH54P-8 pin relay, 4 opening and 4 closing, a coil working voltage of 220V, a current of 3.5-4MA, a power of 0.9W and an electric life of 10 ten thousand belongs to inductive load, and an overvoltage is intercepted, namely after the floating ball switch is disconnected, the current cannot flow along the same trend, the voltage generates counter electromotive force at a disconnection point, the voltage amplitude is instantly improved by about 2 times, and in an engineering true prevention circuit (engineering application software), the voltage of 220V is taken as an example, and the voltage is improved by about 1300V after the power supply is disconnected. After the floating ball is instantly disconnected, high-voltage electric arc is generated to break through air in a space between the two contacts, the electric arc can bake the contacts once when the floating ball is disconnected once, after hundreds of times of baking, the contact resistance of the two contacts of the floating ball is larger and larger, the flowing of voltage and current is hindered, the support body of the contacts also loses elasticity relatively, and finally the support body fails. And the utility model discloses a resistive load, power input end VDD adopts the 5V power, and resistance R adopts 10k omega resistance, and triode Q adopts PNP type triode. When the float switch of the float 1 is turned off, 5V forward voltage is applied to the emitter (E pole) of the triode Q at the probe 14, and 4.97V (no-load voltage) is generated at the upper end of the float 1 at the probe 15 through the 10k resistor. When the float ball of the float ball 1 is closed (to the ground), the voltage at the probe 15 is 4.53pV, the voltage is 0V generated by the line resistance, the ground current 453uA (0.435mA) and the power 0.00197W, the float ball drags a 10k omega resistance, the float ball belongs to a pure resistive load, namely, the resistive load can not generate electric arcs on the contact of the float ball in operation, the power of 0.00197W can be completely ignored, and the float ball operates without load.

Be equipped with three floater 1 in the applied scene, be respectively for starting floater 11, well water level floater 12, high low water level floater 13, well water level floater 12 sets up and starts between floater 11 and high low water level floater 13, works as the utility model discloses an use the scene when the upper water tank, start floater 11 and set up at low water level, high low water level floater 13 sets up at high water level, when using the scene be the ponding pond, starts floater 11 and sets up at high water level, and high low water level floater 13 sets up at low water level. The float switch of the start float 11 is connected with the float terminal 81, the float switch of the middle water level float 12 is connected with the float terminal 82, and the float switch of the high and low water level float 13 is connected with the float terminal 83. The water pump controller is provided with three groups of floating ball control loops, namely a floating ball control loop 31 corresponding to the starting floating ball 11, a floating ball control loop 32 corresponding to the middle water level floating ball 12 and a floating ball control loop 33 corresponding to the high and low water level floating ball 13, wherein the floating ball control loop 31 is connected with one wiring port of the corresponding floating ball wiring terminal 81 through a resistor R, and the other wiring port is grounded; the floating ball control loop 32 is connected with one wiring port of the corresponding floating ball wiring terminal 82 through a resistor R, and the other wiring port is grounded; the float control circuit 33 is connected to one of the connection ports of the corresponding float terminals 83 through a resistor R, and the other connection port is grounded.

The specific design is that on a floating ball control loop corresponding to the starting floating ball 11, an emitting electrode of a triode Q is connected with an anode of a thyristor, a cathode of the thyristor is connected with an emitting electrode of another self-locking triode for self-locking, and a base electrode of the self-locking triode is connected with a floating ball switch of the middle water level floating ball 12 after being connected through a self-locking resistor. After the design, the self-locking of the starting floating ball 11 is realized by utilizing the characteristics of the thyristor, the current can be maintained at 2mA, after the starting floating ball 11 is disconnected, the maintaining current is still larger than 2mA, only when the middle water level floating ball 12 is lifted, the loop is disconnected, the power output by the cathode of the self-locking triode is cut off by the self-locking triode at the moment, the self-locking triode stops working, the follow-up circuit of the collector of the triode Q is powered off, the load is released, and the running is stopped.

The water pump controller further comprises a timer 4, the trigger end of the timer 4 is connected with the collector electrode of the triode Q in one group of floating ball control loops, and the timing signal output end of the timer 4 is connected with the load wiring end. The timer 4 is provided with a timing adjustment potentiometer 41 for adjusting the timing, and the timing adjustment potentiometer 41 is disposed below the surface adjustment hole of the device case 9. The time required to be timed can be adjusted by the timing adjustment potentiometer 41.

The wiring port comprises at least two load terminals; the water pump controller also comprises a signal distributor 5, and the collector of each triode is connected with the signal distributor 5; when the water pump controller is provided with a timer 4, a timing signal output end of the timer 4 is connected with a signal distributor 5; at least two signal output ends of the signal distributor 5 are respectively connected with at least two load terminals. The water pump room is more moist usually, uses a water pump work for a long time to cause coil dielectric strength to descend in another water pump motor, leads to the unable use, needs the manual water pump that is used for work of switching according to the cycle, and is comparatively troublesome. As shown in fig. 1 and 4, there are two loads, load 21, load 22, respectively, and the wiring port is provided with two load terminals 84. The utility model discloses an above-mentioned design is applicable in two water pump operational environment, or a plurality of load operational environment, can automatic mutual switch-over through signal distributor 5. The signal distributor 5 of the present invention can adopt a decimal counter chip CD4017 commonly used in the prior art.

Each group of floating ball control loops is provided with a light-emitting warning device, for example, the floating ball control loop corresponding to the starting floating ball 11 is provided with a light-emitting warning device of an LED green light 61, specifically, the LED green light 61 can be connected with the cathode of a thyristor for self-locking through a first nand gate circuit and a second nand gate circuit, and the gate of the thyristor is connected with the collector of the triode Q of the starting floating ball 11 through two circuits respectively. At this time, when the float switch of the start float 11 is turned on, the high level is present at the input terminal of the second nand gate, the low level is present at the output terminal of the second nand gate, and the high level is present at the output terminal of the first nand gate, and the LED green light 61 is reached to form a path to be lit. The floating ball control loop of the middle water level floating ball 12 is provided with a light-emitting warning device of an LED red light 62, specifically, the LED red light 62 is connected with a second NAND gate circuit, when a floating ball switch of the middle water level floating ball 13 is disconnected, the output end of the second NAND gate circuit is at a high level under the action of a thyristor and the second NAND gate circuit, and the LED red light 62 is turned on after a passage is formed. The floating ball control loop of the high and low water level floating ball 13 is provided with a light-emitting warning device of an LED blue lamp 63. Specifically, the blue LED lamp 63 is connected to the float switch of the high and low water level float 13 through a third nand gate circuit, and when the float switch of the high and low water level float 13 is turned off, the output end of the third nand gate circuit is at a high level, so that the blue LED lamp 63 forms a passage to be turned on. The collector of the triode Q corresponding to the high and low water level floating ball 13 is connected with the start control end of the buzzer, and the signal output end of the timer 4 is also connected with the stop control end of the buzzer and another light-emitting warning device. For example, the timer 4 is provided with an LED yellow lamp 64. The current state of the water pump controller is informed through the luminous warning devices, if the water pump controller is in a strong switch state at a high water level floating ball 13 and a low water level floating ball 13, the buzzer starts to give an alarm and stops pumping for the second time, and finally, when the timer 4 finally performs the strong switch state on the load, the buzzer does not give an alarm any more. The above design of the utility model, can inform water pump controller's user state, can report to the police again and cut by force at last, whole device has higher rationality.

The wiring port also comprises a power supply wiring terminal, and the power supply wiring terminal comprises two wiring ports; the main power input end of the water pump controller is connected with the positive and negative polarity reverse connection protection circuit through the voltage stabilizer, and the positive and negative polarity reverse connection protection circuit is connected with the two wiring ports. The utility model discloses a DC power supply is the control power supply of defeated pump controller, through power source interface with the utility model discloses a power connection end is connected, if adopt DC12V mains operated, through positive negative polarity reversal protection circuit, stabiliser steady voltage back, for each device of water pump controller provides stable 5V power, adopts 220V's forceful electric power supply with ordinary electric cabinet to compare, and the potential safety hazard when having avoided maintaining for vast maintenance worker ensures to maintain worker life safety.

The utility model discloses owing to belong to the general control system of plumbing, consequently under the water supply environment, start the floater and install in low water position (green light), start the floater and install in high water position (green light) during the drainage.

Example 1: water tank (roof living water tank)

Referring to fig. 3, in the upper water tank application scene, three floating balls are arranged in the water tank, and the floating balls are respectively a starting floating ball 11, a middle water level floating ball 12 and a high and low water level floating ball 13 from low water level to high water level. A load 2, a water pump, is provided. The starting floating ball 11 is connected with a floating ball terminal 81, the middle water level floating ball 12 is connected with a floating ball terminal 82, and the high water level floating ball 13 and the low water level floating ball are connected with a floating ball terminal 83; load 2 is connected to load terminal 84 through the contactor coil; the power supply terminal is connected to a DC12V power supply for supplying power.

1) When the water level in the upper water tank is lower than the water level point where the high water level floating ball 13 is located, the floating ball switch of the high water level floating ball 13 is closed and switched on; after the water level continues to fall below the water level point where the middle water level floating ball 12 is located, a floating ball switch of the middle water level floating ball 12 is closed and switched on; after the water level continues to fall below the low water level, namely the water level point of the starting floating ball 11, the floating ball switch of the starting floating ball 11 is closed and switched on, the LED green light 61 is lightened, the load is driven to do water supply work, and meanwhile, the timer 4 starts to time.

2) Under the operation of a load, the upper water tank is supplied with water, when the water level in the upper water tank rises to a position higher than the water level point where the starting floating ball 11 is positioned, the floating ball switch of the starting floating ball 11 is disconnected, but under the self-locking state, the LED green lamp 61 is continuously lightened, and the load continues to operate; when the water level in the upper water tank rises to a water level point higher than the middle water level floating ball 12, the floating ball switch of the middle water level floating ball 12 is switched off, the LED red light 62 is turned on, the LED green light 61 is turned off, and the timer 4 stops timing. The load 2 completes this job stop operation.

3) If the load 2 fails to stop working, after the water feeding work is continued, after the water level in the water feeding tank rises to exceed the water level point where the high-low water level floating ball 13 is located, the floating ball switch of the high-water level floating ball 13 is switched off, the LED blue lamp 63 is turned on, the buzzer buzzes and gives an alarm, the load 2 stops working (the pump is stopped for the second time), the work can be finished within the set time, the reserved forced cutting time is not reached, and the timer 4 stops timing.

In the process (after the pump is stopped for the second time, the pump still cannot be stopped), the load 2 cannot normally complete the work, the timer 4 finishes timing within the set time, the LED yellow lamp 64 is turned on, the load 2 can be forced to stop working, and the buzzer stops giving an alarm. At this time, because under the condition of the cut-by-force, only the LED green light 61 and the LED yellow light 65 are displayed, the middle water level floating ball 12 and the high water level floating ball 13 do not send stop signals, faults exist possibly, after the cut-by-force processing is finished, the power needs to be supplied again for resetting, and after the resetting, because the water level is high, the LED blue light 63 is on at this time.

When the water level in the water feeding tank drops to a water level point lower than the water level point where the starting floating ball 11 is located again, the steps are repeatedly realized, and the purpose that the water feeding of the water tank is automatically controlled by the water pump is further realized.

Example 2: water pool (underground cesspool)

Referring to fig. 4, in the application scenario of the water accumulation tank, three floating balls are arranged in the water accumulation tank, and from high to low, the three floating balls are respectively a starting floating ball (low water level) 11, a middle water level floating ball 12 and a high and low water level floating ball 13. Two loads, load 21 and load 22, are provided, and are water pumps. The starting floating ball 11 is connected with a floating ball terminal 81, the middle water level floating ball 12 is connected with a floating ball terminal 82, and the high water level floating ball 13 and the low water level floating ball are connected with a floating ball terminal 83; load 21 is connected to one of the load terminals 84 through a contactor coil, and load 22 is connected to the other load terminal 84 through a contactor coil; the power supply terminal is connected with a DC12V power supply for supplying power; there are then a total of ten connection ports on the device housing 9.

1) When the water level of the water accumulation pool rises to a water level point higher than the low water level floating ball 13, the floating ball switch of the high and low water level floating ball 13 is closed and switched on; after the water level continues to rise to a water level point higher than the middle water level floating ball 12, a floating ball switch of the middle water level floating ball 12 is closed and switched on; after the water level continues to rise to reach a water level point higher than the high water level starting floating ball 11, the floating ball switch of the starting floating ball 11 is closed and switched on, the LED green light 61 is turned on, the load 21 starts to drain water, and meanwhile the timer 4 starts to time.

2) Under the operation of the load, the water accumulation tank is drained, and when the water level of the water accumulation tank drops to a point lower than the water level point where the middle water level floating ball 12 is located, the LED red light 62 is turned on, and the load 21 stops working.

3) If the load 21 fails to stop working, after the water draining work is continued, the water level of the water accumulation pool is reduced to a point lower than the water level point where the high-low water level floating ball 13 is located, the LED blue lamp 63 is turned on, the buzzer gives an alarm, and the load 21 stops working. The (secondary pump stop) can complete the work within the set time, and the timer 4 stops the timing when the forced cutting time (reserved time) is not reached.

In the process (after the pump is stopped for the second time, the pump still cannot be stopped), the load 21 cannot normally complete the work, the timer 4 finishes timing within the set time, the LED yellow lamp 64 is turned on, the load 21 is forced to stop working, and the buzzer stops giving an alarm.

When the water level of the ponding pool reaches the water level point of the starting floating ball 11 again, the LED green light 61 is turned on, at the moment, the load 22 starts to drain water, and the timer 4 starts to count time. The subsequent operation is the same as that of the load 21 described above.

When the water level of the water accumulation pool reaches the water level point where the floating ball 11 is started, the working process of the load 21 is repeated. The embodiment achieves the purpose that two loads work in turn.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. The automatic control device for the water pump comprises a device shell, wherein a wiring port is arranged on the device shell, and a water pump controller for controlling the water pump to start and stop is arranged in the device shell;

the water pump controller comprises at least two groups of floating ball control loops, wherein one group of floating ball control loops corresponds to one group of floating ball wiring ends, each group of floating ball control loops comprises a triode and a resistor, an emitting electrode of the triode is connected with a floating ball power supply input end, a base electrode of the triode is connected with one wiring port in the corresponding group of floating ball wiring ends through the resistor, the other wiring port in the group of floating ball wiring ends is grounded, and a collector electrode of the triode is connected with the load wiring end.

2. The automatic control device of a water pump according to claim 1, further comprising another group of floating ball terminals and another corresponding group of floating ball control loops.

3. The automatic control device of the water pump according to claim 1 or 2, characterized in that the water pump controller further comprises a timer, and a trigger end of the timer is connected with the collector electrode of the triode in one group of the floating ball control loops;

and a timing signal output end of the timer is connected with the load wiring end.

4. The automatic control device for the water pump according to claim 3, characterized in that the timer is provided with a timing adjustment potentiometer for adjusting timing time, and the timing adjustment potentiometer is arranged on the surface of the device shell and provided with an adjustment hole.

5. The automatic control device of claim 1, wherein said connection port includes at least two of said load terminals;

the water pump controller also comprises a signal distributor, and a collector electrode of each triode is connected with the signal distributor;

at least two signal output ends of the signal distributor are respectively connected with at least two load wiring terminals.

6. The automatic control device of claim 3, wherein said connection port includes at least two of said load terminals;

the water pump controller also comprises a signal distributor, and a collector electrode of each triode is connected with the signal distributor;

the signal distributor is connected with the timing signal output end of the timer;

at least two signal output ends of the signal distributor are respectively connected with at least two load wiring terminals.

7. The automatic control device of a water pump according to claim 3, characterized in that each group of the floating ball control loops is provided with a light-emitting warning device, the collector electrode of the triode corresponding to the high and low water level floating ball is connected with the start control end of a buzzer, and the signal output end of the timer is also connected with another light-emitting warning device and the stop control end of the buzzer;

each luminous warning device is arranged on the surface of the device shell, and the buzzer is also arranged on the surface of the device shell and emits sound by using the adjusting hole.

8. The automatic control device of claim 1, wherein the wiring port further comprises a power terminal, the power terminal comprising two wiring ports;

the main power supply input end of the water pump controller is connected with the positive and negative polarity reverse connection protection circuit through the voltage stabilizer, and the positive and negative polarity reverse connection protection circuit is connected with the two wiring ports.

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