CN220795696U - Mining pond water level control device - Google Patents

Abstract

The mining pool water level control device comprises a power supply module, a water level switch, a wireless transmitting circuit module, a pressure sensor, a time delay control circuit, a detection circuit and a prompt circuit; the water level switches are respectively arranged at different depth positions in the water tank; the power module, the wireless transmitting circuit module, the delay control circuit and the detection circuit are arranged in the electric control box and are electrically connected, and the prompting circuit is arranged in the duty room. This novel when the water level is less than normal water level, first set of water level switch cooperatees time delay control circuit can control the water pump work and pump water in the pond, be higher than the water pump stop work of certain time, after the water pump gets electric work, can detect whether the water pump normally works, when the water pump is because of various reasons do not pump water, and when the water level is less than or is higher than minimum restriction in the pond, can wireless mode suggestion in the personnel on duty of remote position in time find out the reason and carry out the pertinence maintenance to the scene, guaranteed that the water pump is mine safety effectual water supply operation.

Description

Mining pond water level control device

Technical Field

The utility model relates to the technical field of water level control equipment, in particular to a mining pool water level control device.

Background

As the degree of mechanization of mines such as coal mines continues to increase and mining extends downward, the demand for water in the pit and the like becomes greater. In order to ensure safe and effective water supply of the mine, a pool is built in a proper safe position on the mine in general, underground water is pumped by a water pump at ordinary times to ensure that the water level in the pool is in a proper depth, and water is supplied to underground water equipment (such as water for hydraulic support equipment of a fully mechanized mining team) and on-well water equipment through pipelines. In practical situations, not only are the mine areas used for the underground and the aboveground equipment, but also the water in the water tank is pumped by a water pump matched with the vehicle to be sprayed on the transported coal or other minerals and the like in order to reduce dust and the like in the transportation of the transported vehicle. In combination with the above factors, the water level controller cooperates with the water pump to keep a proper water level in the water tank, which is a main condition for ensuring normal production and safety of coal mines and the like (such as fire extinguishment under extreme conditions, gas leakage, water spraying, gas concentration reduction in air and the like).

In the prior art, a water level controller (water level switch) is generally arranged at a proper water level in a water tank, when the water level in the water tank is lower than a certain level, the water level controller controls a water pump (self-priming water pump or a submersible pump) to be powered on, and when the water level exceeds a set height, the water pump is controlled to lose power and not work, so that the proper water level in the water tank is maintained. For example, the patent numbers of China (201320025758.1) and the patent names (water pump control device) are recorded in the description that the controller controls the water pump to be started when the external water level floods the start position probe, and controls the water pump to be closed when the external water level is lower than the stop position probe. The automatic control device of the water pump has the advantages of being convenient to use and capable of improving working efficiency. The above-mentioned patent can control the operation mode of the water pump so that the area including the water tank is at a proper water level, but is limited by the structure, and the following technical problems exist as in the existing water level controller. The method comprises the following steps: when the water pump fails and cannot pump water (such as the volute leaks air, so that the impeller in the volute cannot pump water), although the water pump is always in a working state, low-level water cannot be pumped into the water tank, and a water level controller cannot prompt an offsite worker to find out reasons in time for maintenance, so that normal water supply is restored (such as the standby water pump can be opened in time for pumping water if the worker can know specific conditions in time). And two,: the water level controller can not prompt the workers who are not on site to find out reasons when the water level in the water tank is too high or the water tank is overflowed due to the fact that the water pump cannot work due to the fact that the internal contacts of the water level controller are opened, and the water tank is deficient due to the fact that the internal contacts of the water level controller are short-circuited, so that safe and effective water supply operation on site cannot be guaranteed. In summary, it is particularly necessary to provide a device that can control the operation mode of the water pump, and can prompt the on-site workers not to go to the site in time to perform targeted treatment when the on-site water level is too low and too high and the water pump fails.

Disclosure of Invention

In order to overcome the defects of the prior water level controllers such as mining water tanks and the like due to the structure limitation, the utility model provides the mining water tank water level control device which is based on a water level switch, can prompt the workers who are not on site to go to the site to conduct targeted maintenance in a wireless mode when the water level of the water tank is too low and too high and the water pump fails due to the fact that contacts in the main water level switch are opened and short-circuited in application, and ensures safe and effective water supply of the mine as much as possible.

The technical scheme adopted for solving the technical problems is as follows:

the mining pool water level control device comprises a power supply module, a water level switch, a wireless transmitting circuit module and a pressure sensor, and is characterized by also comprising a time delay control circuit, a detection circuit and a prompt circuit; the water level switches are arranged in a plurality of sets and are respectively arranged at different depth positions in the water tank; the power module, the wireless transmitting circuit module, the delay control circuit and the detection circuit are arranged in the electric control box, the air inlet pipe of the pressure sensor is arranged together with the opening at the side end of the water pump, and the prompting circuit is arranged in the duty room; the wireless transmitting circuit module is provided with at least two sets, the power output end of the delay control circuit is electrically connected with the power input end of the water pump, the signal input end of the detection circuit is electrically connected with the signal output end of the pressure sensor, the control signal end of the delay control circuit is electrically connected with the power input end of the pressure sensor and the detection circuit, the power output end of the first set of water level switch is electrically connected with the signal input end of the delay control circuit, and the signal output ends of the second set of water level switch and the third set of water level switch are respectively electrically connected with the two paths of signal input ends of the first set of wireless transmitting circuit; the power input end of the second wireless transmitting circuit module is electrically connected with the power output end of the detection circuit.

Preferably, the first set of water level switch and the third set of water level switch are floating ball normally closed contact type power switch, and the second set of water level switch is floating ball normally open contact type power switch.

Preferably, the second set of water level switch and the third set of water level switch are respectively matched with a relay, and the output ends of the second set of water level switch and the third set of water level switch are respectively and electrically connected with the input ends of the positive power supplies of the two relays.

Preferably, the relay control contact ends and the normally open contact ends of the second set of water level switch and the third set of water level switch are respectively and electrically connected with the second wireless signal transmitting key and the second contact under the third wireless signal transmitting key of the first set of wireless transmitting circuit module, and the first wireless signal transmitting key and the second contact under the first wireless signal transmitting key of the first set of wireless transmitting circuit module are connected together.

Preferably, the delay control circuit comprises a capacitor, a resistor, an NPN triode and a relay which are electrically connected, wherein the positive power input end and the control power input end of the first relay are connected, the collector of the NPN triode is connected with the negative power input end of the first relay, one end of the first resistor is connected with one end of the second resistor, the positive electrode of the capacitor is connected, the other end of the second resistor is connected with the base of the NPN triode, the negative electrode of the capacitor is connected with the emitter of the NPN triode and the negative power input end of the second relay, and the other end of the first resistor is connected with the positive power input end of the second relay.

Preferably, the detection circuit comprises a resistor, an NPN triode and a relay which are electrically connected, wherein one end of the first resistor is connected with one end of the second resistor and one end of the third resistor, the other end of the third resistor is connected with a base electrode of the NPN triode, the other end of the second resistor is connected with an emitter of the NPN triode, a collector of the NPN triode is connected with a negative power input end of the relay, and a positive power input end of the relay is connected with a control power input end.

Preferably, the prompt comprises a wireless receiving circuit module, a sounder, a light emitting diode, resistors and a power module which are electrically connected, wherein three power output ends of the wireless receiving circuit module are respectively connected with positive power input ends of the three sounders, one ends of the three resistors are respectively connected, the other ends of the three resistors are respectively connected with positive poles of the three light emitting diodes, and negative poles of the three light emitting diodes are respectively connected with negative power input ends of the three sounders.

Compared with the prior art, the utility model has the beneficial effects that: this novel three sets of water level switch can the degree of depth in the real-time supervision pond, when the water level is less than normal water level, first set of water level switch cooperatees time delay control circuit and can control the water pump work and be the interior pump water of pond, be higher than the water pump stop work of certain time, after the water pump gets electric work, can detect whether normal work of water pump, when the water pump work is not pumping water because of various reasons, and when the water level is less than or is higher than minimum restriction in the pond, can wireless mode suggestion in the personnel on duty of remote position in time find out the reason and carry out the pertinence maintenance to the scene, guaranteed the water pump as far as possible for mine safe effectual water supply operation.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 and 3 are circuit diagrams of the present utility model.

Detailed Description

The water level control device for the mining pool comprises a power supply module F1, water level switches S1, S2 and S3, wireless transmitting circuit modules F3 and F6, a pressure sensor F2, a delay control circuit 1, a detection circuit 2 and a prompt circuit 3, wherein the delay control circuit 1 is used for detecting the water level of the mining pool; the three sets of water level switches are respectively arranged at different depth positions on one side of the inner wall of a water tank (not shown in the figure), the first set of water level switch S1 is positioned at four fifths of the depth of the inner wall of the water tank and is used as a control water level set point position, the second set of water level switch S2 is positioned at the highest water level set point position (such as 5 cm on a spacing water tank) of the inner wall of the water tank, and the third set of water level switch S3 is positioned at the lowest water level set point position (such as 20 cm on the bottom of the spacing water tank) of the inner wall of the water tank; the power module F1, the wireless transmitting circuit modules F3 and F6, the delay control circuit 1 and the detection circuit 2 are arranged in the electric control box 4 on the outer upper side of the water tank, a screw hole is formed in the side part of the water outlet pipe of the water pump M1 matched with the water tank, the air inlet pipe of the pressure sensor F2 is screwed into the screw hole through threads, the air inlet pipe is arranged on the side part of the water outlet pipe, the pressure sensing surface is positioned in the water outlet pipe, and the prompting circuit 3 is arranged in the indoor housing 5 on duty within a certain range of the interval water tank.

As shown in fig. 1, 2 and 3, the first set of water level switch S1 and the third set of water level switch S3 are floating ball normally-closed contact type power switches, and the second set of water level switch S2 is a floating ball normally-open contact type power switch. The second set of water level switch S2 and the third set of water level switch S3 are respectively matched with a relay K4 and a relay K5, the power output ends of the second set of water level switch S2 and the third set of water level switch S3 are respectively electrically connected with the positive power input ends of the two relays K4 and K5, and the negative power input ends of the two relays K4 and K5 are connected with the negative power output end 4 pin of the power module F1 through a lead. The control contact ends and the normally open contact ends of the relays K4 and K5 of the second set of water level switch and the third set of water level switch are respectively connected with the two contacts below the second wireless signal transmitting key D2 and the third wireless signal transmitting key D3 of the first set of wireless transmitting circuit module F3 through wires; the two contacts under the first wireless signal transmitting key D1 of the second wireless transmitting circuit module F6 are connected together in advance through wires. The delay control circuit comprises a capacitor C1, resistors R1 and R2, an NPN triode Q1, relays K1 and K2 which are connected through wiring of a circuit board, wherein a positive power input end and a control power input end of the first relay K2 are connected, a collector of the NPN triode Q1 is connected with a negative power input end of the first relay K2, one end of the first resistor R1 is connected with one end of the second resistor R2, the positive electrode of the capacitor C1 is connected with the base of the NPN triode Q1, the other end of the second resistor R2 is connected with an emitter of the NPN triode Q1, the negative power input end of the second relay K1 is connected, and the other end of the first resistor R1 is connected with the positive power input end of the second relay K1. The detection circuit comprises resistors R3, R4 and R5 which are connected through wiring of a circuit board, an NPN triode Q2 and a relay K3, wherein one end of the first resistor R3 is connected with one end of the second resistor R4 and one end of the third resistor R5, the other end of the third resistor R5 is connected with a base electrode of the NPN triode Q2, the other end of the second resistor R4 is connected with an emitter electrode of the NPN triode Q2, a collector electrode of the NPN triode Q2 is connected with a negative power supply input end of the relay K3, and an anode power supply input end and a control power supply input end of the relay K3 are connected. The prompt comprises a wireless receiving circuit module F5, sounders B1, B2 and B3, light emitting diodes VL1, VL2 and VL3, resistors R6, R7 and R8 and a power module AF4 which are connected through circuit board wiring; three paths of power output ends 3, 4 and 5 pins of the wireless receiving circuit module F5 and positive power input ends of three signaling devices B1, B2 and B3, and one ends of three resistors R6, R7 and R8 are respectively connected; the other ends of the three resistors R6, R7 and R8 are respectively connected with anodes of the three light emitting diodes VL1, VL2 and VL 3; the cathodes of the three light emitting diodes VL1, VL2 and VL3 are connected with the cathode power input ends of the three sounders B1, B2 and B3, the cathode power output end 4 pin of the power module AF4 and the cathode power input end 2 pin of the wireless receiving circuit module F5; the positive power input end 1 pin of the wireless receiving circuit F5 is connected with the positive power output end 3 pin of the power module AF4, and the power input ends 1 and 2 pins of the power module AF4 are respectively connected with the two poles of the indoor alternating current 220V power supply on duty through wires.

As shown in fig. 1, 2 and 3, the power input ends 1 and 2 pins of the power module F1 and the relay K2 of the delay control circuit are connected with the two poles of the ac 220V power supply through wires respectively. The power output ends 3 and 4 pins of the power module F1 and the power input ends of three sets of water level switches S1, S2 and S3 are respectively connected with the positive power input end of a relay K2 of the delay control circuit, the negative electrode of a capacitor C1 and the power input ends 1 and 2 pins of the first set of wireless transmitting circuit module F3 through wires. The two normally open contact ends of the relay K1 at the power output end of the delay control circuit are respectively connected with the two ends of the power input end of the water pump M1 through wires, and the other end of the signal input end resistor R3 of the detection circuit is connected with the pin 3 of the signal output end of the pressure sensor F2 through wires. The normally open contact end of the relay K2 at the control signal end of the delay control circuit and the power input ends of the NPN triode Q1 emitter and the pressure sensor F2, and the positive power input end of the relay K3 at the power input end of the detection circuit are respectively connected with the emitter of the NPN triode Q2 through wires. The power output end of the first set of water level switch S1 is connected with the positive power input end of the signal input end relay K1 of the delay control circuit through a wire, and the normally closed contact end of the signal output end relay K2 of the detection circuit and the emitting electrode of the NPN triode Q2 are respectively connected with the power input ends 1 and 2 pins of the wireless emitting circuit module F6 through wires.

As shown in fig. 1, 2 and 3, after an ac 220V power enters the power input end of the power module F1, the 3 and 4 pins of the power module F1 output stable dc12V power to enter the power input ends of the three sets of water level switches S1, S2 and S3, a delay control circuit and a wireless transmitting circuit module F6. After the alternating current 220V power supply enters the power input end of the power supply module AF4, the 3 pin and the 4 pin of the power supply module AF4 output stable direct current 12V power supply and enter the power input end of the wireless receiving circuit module F5. When the water level depth in the pool is higher than the lowest set water level, the internal contact of the water level switch S3 (the float of the water level switch is at a high position) cannot be closed, so that the relay K5 cannot be electrified to be attracted, and the wireless transmitting circuit module F3 cannot transmit a third wireless closing signal. When the water level depth in the water tank is lower than the lowest set water level, the internal contact of the water level switch S3 (the float of the water level switch is at the low position) is closed, so that the control contact end and the normally open contact end of the relay K5 are electrically attracted, and as the control contact end and the normally open contact end of the relay K5 are respectively connected with the lower two contacts of the third wireless signal transmitting key D3 of the wireless transmitting circuit module F3, the wireless transmitting circuit module F3 can transmit a third wireless closing signal. When the water level depth in the water tank is lower than the highest set water level, the internal contact of the water level switch S2 (the float of the water level switch is in the low position) cannot be closed, so that the relay K4 cannot be electrified and attracted, and the wireless transmitting circuit module F3 cannot transmit a second path of wireless closing signal. When the depth of the water level in the water tank is higher than the highest set water level, the internal contact of the water level switch S2 (the float of the water level switch is at a high position) can be closed, so that the control contact end and the normally open contact end of the relay K4 can be electrically attracted, and as the control contact end and the normally open contact end of the relay K4 are respectively connected with the two contacts below the second wireless signal transmitting key D2 of the wireless transmitting circuit module F3, the wireless transmitting circuit module F3 can transmit a second path of wireless closing signal.

As shown in fig. 1, 2 and 3, when the water level in the water tank is higher than the set control water level, the float of the water level switch S1 floats upwards and the internal contact thereof is opened, so that the relay K1 is not electrically attracted, and the water pump M1 is not operated. When water is taken from the water using equipment to cause the water level in the water tank to be lower than the control water level, the float of the water level switch S1 descends to enable the internal contact to be closed, so that the relay K1 can be electrified to close the power input end controlled by the relay and the normally open contact end, and the water pump M1 can be electrified to pump underground water and the like into the water tank; when the water level in the water tank is higher than the control water level again, the relay K1 is powered off again, and the water pump M1 is powered off again and does not work. Through the structure, the water level in the water tank can be kept at a proper depth, and the requirements of other water using equipment are met. In this novel, when water intaking of water using equipment causes the pond water level to be less than the control water level, relay K1 gets the electricity, 12V power after the water level switch S1 contact is closed still can be through resistance R1 current-limiting step-down for electric capacity C1 charges, just a period of beginning (say 5 seconds, concrete time is adjustable through changing resistance R1 resistance, the longer charge time of resistance is bigger), when electric capacity C1 is not fully charged, 12V power gets into NPN triode Q1 base through resistance R1, R2 step-down current-limiting is less than 0.7V, NPN triode Q1 can not switch on, then, pressure sensor F2 can not get electric, wireless transmitting circuit module F6 etc. can not get electric work. After charging for a period of time (for example, more than 5 seconds), when the capacitor C1 is fully charged, the 12V power supply is reduced by the resistors R1 and R2, the current is limited, and then the voltage is fed into the base electrode of the NPN triode Q1 to be higher than 0.7V, the NPN triode Q1 can conduct the collector electrode to output low level and feed the low level into the negative electrode power supply input end of the relay K2, and then the relay K2 is electrified to suck the control power supply input end and the normally open contact end of the relay K2 to be closed, so that the pressure sensor F2 and the detection circuit can be electrified, and conditions are created for the power supply operation of the wireless transmitting circuit module F6. After the pressure sensor F2 is powered on, if the water pump M1 works normally and the water outlet end pumps water normally, the pressure of water acts on the stress surface of the pressure sensor F2, the voltage signal output by the 3 pin of the pressure sensor F2 is divided by the resistors R3 and R4, the voltage is reduced and limited by the resistor R5, the voltage enters the base electrode of the NPN triode Q2 to be higher than 0.7V, the conducting collector electrode of the NPN triode Q2 outputs low level to enter the negative electrode power supply input end of the relay K3, the control contact end and the normally closed contact end of the relay K3 are powered on to open, and the wireless transmitting circuit module F6 cannot be powered on. If the water outlet of the water pump M1 does not work normally or the water pressure of the water pump is extremely low (for example, lower than 0.1 MPA), the voltage signal output by the 3 pin of the pressure sensor F2 is divided by the resistors R3 and R4, the voltage signal enters the base electrode of the NPN triode Q2 after being reduced in voltage and limited in current, the base electrode of the NPN triode Q2 is lower than 0.7V, the cut-off collector electrode of the NPN triode Q2 does not output low level any more, the control contact end and the normally closed contact end of the relay K3 are not closed when the relay K3 is powered off, the wireless transmitting circuit module F6 can work electrically, and the two contacts of the first wireless signal transmitting key D1 of the wireless transmitting circuit module F6 are connected together in advance, so that the wireless transmitting circuit module F6 can transmit a first wireless closing signal. Through the above-mentioned, this novel can detect its normal pump water after the water pump gets the electricity work for 5 seconds, and wireless transmitting circuit module F6 can send out first wireless closed signal all the way when not pumping water or the water pressure of pumping is extremely low. This novel delay such as resistance R1, R2 and electric capacity C1 is because water pump M1 needs certain time to pump groundwater suction from the play water end after getting the electricity, if not through delay circuit delay, then under the initial state, play water end pressure is too low will lead to relay K3 to lose electricity (the detection circuitry just gets electric actuation as soon as getting electric relay K2), wireless closed signal is misemitted to wireless transmitting circuit module F6, and through 5 seconds Zhong Yanshi, water that has pressure in the play water end, so water pump M1 normal operating time, wireless transmitting circuit module F6 just can not misemit wireless signal.

In fig. 1, 2, 3, when the water pump M1 is not working normally or the water level of the water tank is too low and the water level is too high, the wireless transmitting circuit module F6 transmits a first path of wireless closing signal, or the wireless transmitting circuit module F3 transmits a second path and a third path of wireless closing signal, after the wireless receiving circuit module F5 receives the signals, pins 3 or 4 and 5 output high levels to enter the sounder B1 and the positive power supply input end (the current-limiting voltage reduction of the resistor R6) of the light-emitting diode VL1 respectively, or the sounder B2 and the positive power supply input end (the current-limiting voltage reduction of the resistor R7) of the light-emitting diode VL2, the sounder B3 and the positive power supply input end (the current-limiting voltage reduction of the resistor R8) of the light-emitting diode VL3, so that the sounder B1 gets an electrical sound, the light-emitting diode VL1 gets an electrical light-emitting prompt that the on-site water pump M1 works abnormally, or the sounder B2 gets an electrical sound, the light-emitting diode VL2 gets an electrical light prompt that the on-site water level of the indoor personnel is too low (representing that the possible water level switch S1 is open or the water pump M1 works abnormally), the sounder B3 gets electrical sound, the light-emitting diode VL3 gets the high and the light level 3 represents that the specific on-site water level is safe and the situation that the situation is possible to be safe when the on site, and the person is on the occasion.

As shown in fig. 2 and 3, the resistances R1, R2, R3, R4, R5, R6, R7, and R8 are 1M, 470K, 4.7K, 10K, 5K, 1.8K, and 1.8K, respectively; the model of NPN triodes Q1 and Q2 is S9013; the types of the relays K1, K2 and K3 are DC12V; the power module F1 and the power module AF4 are finished products of power modules from alternating current 220V to direct current 12V; the signaling devices B1, B2 and B3 are active continuous sounding alarm finished products of the model SFM-27; the wireless transmitting circuit modules F3 and F6 and the wireless receiving circuit module F5 are four-way wireless receiving and transmitting assembly finished products (consistent with the use principle of an automobile wireless receiving and transmitting assembly structuring machine) with the model KGS-B50-12V, and the wireless receiving and transmitting distance is 3000 m; the pressure sensor F1 is a finished pressure sensor product of the model AYCGQ02, and is provided with two power input ends and a signal output end, and the signal output end can output a 0-5V voltage signal which dynamically changes along with different detection pressures when in operation; the model of the capacitor C1 is 4.7UF/25V; the light emitting diodes VL1, VL2 and VL33 are red light emitting diodes (the light emitting surface is positioned outside the front end opening of the electric control box); the water level switches S1, S2 and S3 are finished products of float type water level switches of the brand Iriaceae.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be connected mechanically and electrically, can be directly connected, can be indirectly connected through an intermediate medium, and can be communicated with each other inside the two components. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (7)

1. The mining pool water level control device comprises a power supply module, a water level switch, a wireless transmitting circuit module and a pressure sensor, and is characterized by also comprising a time delay control circuit, a detection circuit and a prompt circuit; the water level switches are arranged in a plurality of sets and are respectively arranged at different depth positions in the water tank; the power module, the wireless transmitting circuit module, the delay control circuit and the detection circuit are arranged in the electric control box, the air inlet pipe of the pressure sensor is arranged together with the opening at the side end of the water pump, and the prompting circuit is arranged in the duty room; the wireless transmitting circuit module is provided with at least two sets, the power output end of the delay control circuit is electrically connected with the power input end of the water pump, the signal input end of the detection circuit is electrically connected with the signal output end of the pressure sensor, the control signal end of the delay trigger circuit is electrically connected with the power input end of the pressure sensor and the detection circuit, the power output end of the first set of water level switch is electrically connected with the signal input end of the delay control circuit, the signal output ends of the second set of water level switch and the third set of water level switch are respectively electrically connected with the two paths of signal input ends of the first set of wireless transmitting circuit, and the power input end of the second set of wireless transmitting circuit module is electrically connected with the power output end of the detection circuit.

2. The mining pool water level control apparatus of claim 1, wherein the first set of water level switches and the third set of water level switches are float normally closed contact type power switches, and the second set of water level switches are float normally open contact type power switches.

3. The mining pool water level control device according to claim 1, wherein the second set of water level switches and the third set of water level switches are respectively matched with a relay, and the output ends of the second set of water level switches and the third set of water level switches are respectively electrically connected with the positive power input ends of the two relays.

4. The mining pool water level control device according to claim 3, wherein the relay control contact ends and the normally open contact ends of the second set of water level switches and the third set of water level switches are respectively and electrically connected with the second wireless signal transmitting key and the lower two contacts of the third wireless signal transmitting key of the first set of wireless transmitting circuit module, and the lower two contacts of the first wireless signal transmitting key of the first set of wireless transmitting circuit module are connected together.

5. The mining pool water level control device according to claim 1, wherein the delay control circuit comprises a capacitor, a resistor, an NPN triode and a relay which are electrically connected, wherein a positive power input end and a control power input end of the first relay are connected, a collector electrode of the NPN triode is connected with a negative power input end of the first relay, one end of the first resistor is connected with one end of the second resistor, a positive electrode of the capacitor is connected, the other end of the second resistor is connected with a base electrode of the NPN triode, a negative electrode of the capacitor is connected with an emitter electrode of the NPN triode, a negative power input end of the second relay is connected, and the other end of the first resistor is connected with a positive power input end of the second relay.

6. The mining pool water level control device according to claim 1, wherein the detection circuit comprises a resistor, an NPN triode and a relay which are electrically connected, one end of the first resistor is connected with one end of the second resistor, one end of the third resistor is connected with a base electrode of the NPN triode, the other end of the third resistor is connected with an emitter of the NPN triode, a collector of the NPN triode is connected with a negative power supply input end of the relay, and a positive power supply input end of the relay is connected with a control power supply input end.

7. The mining pool water level control device according to claim 1, wherein the prompt comprises a wireless receiving circuit module, a sounder, a light emitting diode, a resistor and a power module which are electrically connected, wherein three power output ends of the wireless receiving circuit module are respectively connected with positive power input ends of three sounders, one ends of three resistors are respectively connected with the other ends of the three resistors, the positive electrodes of the three light emitting diodes are respectively connected with the other ends of the three resistors, and the negative electrodes of the three light emitting diodes are respectively connected with negative power input ends of the three sounders.