A self-controlled submersible pump

Abstract

The present invention relates to the technical field of submersible pumps, and in particular discloses an automatic submersible pump, comprising a base, a driving motor installed in the base, and a control component, wherein a shell is provided on the base, a water inlet pipe is connected to the side wall of the shell, and a filter is provided at the water inlet of the water inlet pipe; the control component comprises a central control device, a temperature sensor installed in the base for detecting the driving motor, a flow sensor and a water level detector installed at the water inlet pipe, and the central control device is connected to a control signal input end, and the control signal input end is connected to the temperature sensor, the flow sensor and the water level detector. The automatic submersible pump provided by the present invention has good operating stability and good independence between detection data, which is convenient for the operation control and fault prediction of the submersible pump, and different alarm audios are issued according to the type of fault, and the machine is shut down in a timely and active manner to ensure safety.

Description

Technical Field

[0001] The invention relates to the technical field of submersible pumps, and in particular to an automatic submersible pump. Background Art

[0002] Submersible pumps are important equipment for deep well water extraction. When in use, the entire unit submerges in the water to extract groundwater to the surface. It is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and fountain landscape. Submersible pumps are classified in many ways. The coils in the motor are oil-immersed, water-immersed, and dry. Before turning on the pump, the suction pipe and the pump must be filled with liquid. After the pump is turned on, the impeller rotates at high speed, and the liquid in it rotates with the blades. Under the action of centrifugal force, it flies away from the impeller and ejects outward. The ejected liquid gradually slows down in the diffusion chamber of the pump casing, and the pressure gradually increases, and then flows out from the pump outlet discharge pipe. As a general-purpose machine, the pump has a wide range of uses.

[0003] Submersible pumps on the market need to be immersed in water when they are in operation, so their driving motors are in a completely sealed state, which makes it impossible to dissipate heat through air during operation, and they rely entirely on water flow for heat dissipation. Therefore, if water shortage occurs when the submersible pump is working, the motor will burn out in a short time, causing the submersible pump to fail. At the same time, since the working position of the submersible pump is in the water, maintenance is very inconvenient. In order to solve this problem, the current commonly used method is to add a water level switch to the submersible pump to control the timely shutdown of the submersible pump when it is short of water. However, it is found in use that relying solely on the water level switch cannot completely and effectively protect the submersible pump from water shortage, and it is also impossible to monitor the working status of the submersible pump. During the operation of the submersible pump, in addition to the drop in the water level of the water source, motor failure, blockage of the water inlet of the submersible pump, etc. will also cause the motor to burn out in the submersible pump. Therefore, it is necessary to develop a new submersible pump water shortage management method and equipment to improve the operation management capability of the submersible pump and make necessary predictions of submersible pump failures.

[0004] In view of the above problems, the present invention provides a self-controlled submersible pump. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The problem to be solved by the present invention is to provide an automatic submersible pump in view of the deficiencies in the above-mentioned prior art, which has good operating stability and good independence between detection data, avoids mutual interference between detection data, improves the accuracy and controllability of submersible pump protection control, and can also transmit the operating status parameters of the submersible pump, which is convenient for the operation control and fault prediction of the submersible pump. At the same time, the submersible pump can be shut down in time and actively when it is running short of water, thereby ensuring the safety of the operation of the submersible pump.

[0007] (II) Technical solution

[0008] The technical solution adopted by the present invention to solve the above technical problems is: an automatic submersible pump, comprising a base, a driving motor installed in the base and a control component, the base is provided with a shell, the side wall of the shell is connected with a water inlet pipe, and a filter screen is provided at the water inlet of the water inlet pipe;

[0009] The control assembly includes a central control device, a temperature sensor installed in the base for detecting the drive motor, a flow sensor and a water level detector installed at the water inlet pipe, the central control device is connected to a control signal input end, the control signal input end is connected to the temperature sensor, the flow sensor and the water level detector, the central control device is provided with an output end, and the output end is connected to a fault alarm unit;

[0010] The parameter data detected by the temperature sensor, the flow sensor and the water level detector are transmitted to the central control device and compared with the set standard parameter range. If the parameter data exceeds the standard parameter range, the central control device will trigger a control instruction to the fault alarm unit, causing the alarm of the fault alarm unit to sound. At the same time, the central control device controls the drive motor to stop working.

[0011] When it is found during maintenance that the water level of the water source is greater than the minimum operating water level of the submersible pump, the water flow rate at the water inlet of the submersible pump is within the normal operating water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is not higher than the maximum operating temperature of the driving motor, it means that the submersible pump is operating normally.

[0012] When it is found that the water level of the water source is lower than the minimum operating water level of the submersible pump, the water flow rate at the water inlet of the submersible pump is lower than the normal operating water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is higher than the maximum operating temperature of the driving motor, and the three parameter data appear at the same time, it means that the submersible pump is in a water shortage state or is about to reach a water shortage state, which triggers the central control device to issue a control instruction to the fault alarm unit, causing the alarm of the fault alarm unit to sound, and at the same time the central control device controls the driving motor to stop working urgently.

[0013] During specific work, the submersible pump is placed in water, the water level height of the water source is detected by a water level detector, the water flow rate at the water inlet of the submersible pump is detected by a flow sensor, and the operating temperature of the driving motor of the submersible pump is detected by a temperature sensor. The three types of submersible pump operating parameter data are obtained and transmitted to the central control device. The central control device is pre-set with a standard parameter range. The parameter data is input into the central control device and compared with the standard parameter range. If the parameter data exceeds the standard parameter range, the central control device triggers a control instruction to the fault alarm unit, causing the alarm of the fault alarm unit to sound, and the central control device controls the driving motor to stop working.

[0014] Among them, when the water level of the water source is found to be lower than the minimum operating water level of the submersible pump, it means that the submersible pump is about to enter a water-deficient operating state; when it is detected that the water flow rate at the water inlet of the submersible pump is lower than the normal working water suction flow range of the submersible pump, it means that the water inlet of the submersible pump is blocked and the water inlet is not smooth; when it is detected that the operating temperature of the submersible pump drive motor is higher than the maximum operating temperature of the drive motor, it means that the internal excitation coil of the submersible pump drive motor is faulty; when it is detected at the same time that the water flow rate at the water inlet of the submersible pump is lower than the normal working water suction flow range of the submersible pump, and the operating temperature of the submersible pump drive motor is higher than the maximum operating temperature of the drive motor, it means that the operating load of the submersible pump motor is too large and the rotation resistance of the submersible pump motor rotor is too large.

[0015] Preferably, the fault alarm unit is provided with an alarm audio storage repository, the alarm audio storage repository is provided with a data storage module, the data storage module contains different alarm audio data, and the data storage module sorts and stores the alarm audio data.

[0016] Preferably, a control instruction storage library is provided in the central control device, in which different control instructions and instruction numbers generated corresponding to the instructions are set. The control instructions generate different control instructions based on parameter data detected by the temperature sensor, the flow sensor and the water level detector, and then generate different instruction numbers.

[0017] Preferably, the instruction number is also stored in the data storage module, and the alarm audio data is matched with the instruction number to generate matching data.

[0018] Preferably, the instruction number in the control instruction repository corresponds to the matching data in the data storage module, which facilitates the docking of the control instruction with the instruction number in the fault alarm unit. After the control instruction is confirmed, it is transmitted to the fault alarm unit. The control instruction finds the corresponding matching data in the fault alarm unit according to the instruction number, and triggers the corresponding alarm audio data to run, and the alarm sounds.

[0019] Preferably, the output end of the fault alarm unit is provided with a remote monitoring display for data display, and the remote monitoring display is provided with a touch component and an instruction entry unit for generating corresponding signal instructions in response to touch operations; wherein, the touch component cooperates with the instruction entry unit to pre-enter different control instructions, so as to facilitate the fault alarm unit to pre-analyze and integrate the instructions, and cooperate with the central control device to regulate the fault alarm unit.

[0020] Preferably, the alarm audio data is found in the search module of the command entry unit on the remote monitoring display, the selected alarm audio data is exported using the export module, and then the control instructions to be matched are selected to match them, so as to facilitate the control and adjustment of the fault alarm unit.

[0021] Preferably, the driving motor is provided with an output shaft, a boosting structure is installed on the output shaft, the outer shell is installed on the base at an external position of the boosting structure, a pump cover is installed on the upper end surface of the outer shell, and a water outlet node is installed in the middle position of the upper end surface of the pump cover.

[0022] During specific operation, the operating parameter data of three types of submersible pumps are detected and transmitted to the central control device. A standard parameter range is pre-set in the central control device. The parameter data is input into the central control device for comparison with the standard parameter range. If the parameter data exceeds the standard parameter range, the corresponding control instruction in the central control device is triggered. The control instruction output in the control instruction storage library makes its instruction number correspond to the matching data in the data storage module, which is convenient for the control instruction to be connected with the instruction number in the fault alarm unit. After the control instruction is confirmed, it is transmitted to the fault alarm unit. The control instruction finds the corresponding instruction number in the fault alarm unit and triggers the corresponding alarm audio data to run, and the alarm sounds; at the same time, the central control device controls the drive motor to stop working.

[0023] The present invention has good operating stability and good independence between detection data, which avoids mutual interference between detection data, improves the accuracy and controllability of submersible pump protection control, and can also transmit the operating status parameters of the submersible pump, which is convenient for submersible pump operation control and fault prediction. At the same time, the submersible pump can be shut down in time and actively when it is running short of water, ensuring the safety of submersible pump operation.

[0024] (III) Beneficial effects

[0025] 1. The self-controlled submersible pump provided by the present invention has good operating stability and good independence between detection data, which avoids mutual interference between detection data and improves the accuracy and controllability of submersible pump protection control. In addition, the operating status parameters of the submersible pump can be transmitted, which is convenient for submersible pump operation control and fault prediction, and different alarm audios are issued according to the type of fault, and the pump is shut down in time and actively, ensuring the safety of submersible pump operation.

[0026] 2. The present invention provides an automatic submersible pump, wherein when it is found that the water level of the water source is lower than the minimum operating water level of the submersible pump, the water flow rate at the water inlet of the submersible pump is lower than the normal operating water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is higher than the maximum operating temperature of the driving motor, when the three parameter data appear at the same time, it means that the submersible pump is in a water shortage state or is about to reach a water shortage state, thereby triggering the control instruction issued by the central control device to the fault alarm unit, causing the alarm of the fault alarm unit to sound, and at the same time the central control device controls the driving motor to stop working urgently.

[0027] 3. A self-controlled submersible pump provided by the present invention, wherein three types of submersible pump operating parameter data are detected and transmitted to a central control device, a standard parameter range is pre-set in the central control device, parameter data is input into the central control device and compared with the standard parameter range, and the corresponding control instruction in the central control device is triggered when the parameter data exceeds the standard parameter range, and the control instruction output in the control instruction storage library makes its instruction number correspond to the matching data in the data storage module, so as to facilitate the docking of the control instruction with the instruction number in the fault alarm unit, that is, different parameter data correspond to different control instructions, and when the parameter data reaches the range, the control instruction is triggered, and after the control instruction is confirmed, it is transmitted to the fault alarm unit, and the control instruction finds the corresponding instruction number in the fault alarm unit, and triggers the corresponding alarm audio data to run, and the alarm sounds; at the same time, the central control device controls the drive motor to stop working; wherein, this structure is conducive to the operation control and fault prediction of the submersible pump, and different alarm audios are issued according to the type of fault to prompt the staff the cause of the fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the overall structure workflow of the present invention;

[0030] Figure 3 The figure is a schematic diagram of the working process of the fault alarm unit of the present invention.

[0031] Among them: 1 base, 2 control component, 21 central control device, 211 control instruction storage library, 212 instruction number, 22 temperature sensor, 23 flow sensor, 24 water level detector, 25 fault alarm unit, 251 alarm audio storage library, 252 data storage module, 253 alarm audio data, 254 matching data, 26 parameter data, 27 standard parameter range, 28 control instruction, 3 shell, 4 water inlet pipe, 5 pump cover, 6 water outlet joint. DETAILED DESCRIPTION

[0032] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] See also Figure 1-Figure 3 , a self-controlled submersible pump, comprising a base 1, a driving motor installed in the base 1 and a control component 2, a shell 3 is arranged on the base 1, a side wall of the shell 3 is connected to a water inlet pipe 4, and a filter screen is arranged at the water inlet of the water inlet pipe 4;

[0034] See also Figure 2-Figure 3 The control assembly 2 includes a central control device 21, a temperature sensor 22 installed in the base 1 for detecting the driving motor, a flow sensor 23 and a water level detector 24 installed at the water inlet pipe 4, the central control device 21 is connected to a control signal input end, the control signal input end is connected to the temperature sensor 22, the flow sensor 23 and the water level detector 24, the central control device 21 is provided with an output end, and the output end is connected to a fault alarm unit 25;

[0035] The parameter data 26 detected by the temperature sensor 22, the flow sensor 23 and the water level detector 24 are transmitted to the central control device 21 and compared with the set standard parameter range 27. If the parameter data 26 exceeds the standard parameter range 27, the central control device 21 will issue a control instruction 28 to the fault alarm unit 25, causing the fault alarm unit 25 to sound an alarm, and at the same time the central control device 21 controls the drive motor to stop working.

[0036] When it is found that the water level of the water source is greater than the minimum operating water level of the submersible pump, the water flow rate at the water inlet of the submersible pump is within the normal operating water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is not higher than the maximum operating temperature of the driving motor, the parameter data 26 does not exceed the standard parameter range 27, indicating that the submersible pump is operating normally.

[0037] When it is found that the water level of the water source is lower than the minimum operating water level of the submersible pump, the water flow rate at the water inlet of the submersible pump is lower than the normal operating water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is higher than the maximum operating temperature of the driving motor, when the three parameter data 26 appear at the same time, it means that the submersible pump is in a water shortage state or is about to reach a water shortage state, thereby triggering the control instruction 28 issued by the central control device 21 to the fault alarm unit 25, causing the alarm of the fault alarm unit 25 to sound, and at the same time the central control device 21 controls the driving motor to stop working urgently.

[0038] During specific operation, the submersible pump is placed in water, the water level detector 24 is used to detect the water level height of the water source, the flow sensor 23 is used to detect the water flow at the water inlet of the submersible pump, and the temperature sensor 22 is used to detect the operating temperature of the driving motor of the submersible pump. Three types of submersible pump operating parameter data 26 are obtained and transmitted to the central control device 21. The central control device 21 is pre-set with a standard parameter range 27. The parameter data 26 are input into the central control device 21 and compared with the standard parameter range 27. If the parameter data 26 exceeds the standard parameter range 27, the central control device 21 is triggered to issue a control instruction 28 to the fault alarm unit 25, so that the alarm of the fault alarm unit 25 sounds, and the central control device 21 controls the driving motor to stop working.

[0039] Among them, when the water level of the water source is found to be lower than the minimum operating water level of the submersible pump, it means that the submersible pump is about to enter a water-deficient operating state; when it is detected that the water flow rate at the water inlet of the submersible pump is lower than the normal working water suction flow range of the submersible pump, it means that the water inlet of the submersible pump is blocked and the water inlet is not smooth; when it is detected that the operating temperature of the submersible pump drive motor is higher than the maximum operating temperature of the drive motor, it means that the internal excitation coil of the submersible pump drive motor is faulty; when it is detected at the same time that the water flow rate at the water inlet of the submersible pump is lower than the normal working water suction flow range of the submersible pump, and the operating temperature of the submersible pump drive motor is higher than the maximum operating temperature of the drive motor, it means that the operating load of the submersible pump motor is too large and the rotation resistance of the submersible pump motor rotor is too large.

[0040] The fault alarm unit 25 is provided with an alarm audio storage library 251, and the alarm audio storage library 251 is provided with a data storage module 252. The data storage module 252 contains different alarm audio data 253. The data storage module 252 sorts and stores the alarm audio data 253.

[0041] The central control device 21 is provided with a control instruction storage library 211, in which different control instructions 28 and instruction numbers 212 generated corresponding to the instructions are set. The control instructions 28 generate different control instructions 28 according to the parameter data 26 detected by the temperature sensor 22, the flow sensor 23 and the water level detector 24, and then generate different instruction numbers 212.

[0042] The instruction number 212 is also stored in the data storage module 252 , and the alarm audio data 253 is matched with the instruction number 212 to generate matching data 254 .

[0043] The instruction number 212 in the control instruction repository 211 corresponds to the matching data 254 in the data storage module 252, which facilitates the docking of the control instruction 28 with the instruction number 212 in the fault alarm unit 25. After confirming the control instruction 28, it is transmitted to the fault alarm unit 25. The control instruction 28 finds the corresponding matching data 254 in the fault alarm unit 25 according to the instruction number 212, and triggers the corresponding alarm audio data 253 to run, and the alarm sounds.

[0044] The output end of the fault alarm unit 25 is provided with a remote monitoring display for data display, and the remote monitoring display is provided with a touch component and an instruction input unit for generating corresponding signal instructions in response to touch operations; wherein, the touch component cooperates with the instruction input unit to pre-enter different control instructions 28, so as to facilitate the fault alarm unit 25 to pre-analyze and integrate the instructions, and cooperate with the central control device 21 to regulate the fault alarm unit 25.

[0045] The alarm audio data 253 is found in the search module of the command entry unit on the remote monitoring display, the selected alarm audio data 253 is exported using the export module, and then the control instruction 28 to be matched is selected to match it, so as to facilitate the control and adjustment of the fault alarm unit 25.

[0046] The driving motor is provided with an output shaft, on which a boost structure is installed, the housing 3 is installed on the base 1 at an external position of the boost structure, a pump cover 5 is installed on the upper end surface of the housing 3, and a water outlet node 6 is installed at a middle position of the upper end surface of the pump cover 5.

[0047] During specific operation, the detected operating parameter data 26 of three types of submersible pumps are transmitted to the central control device 21. The central control device 21 is pre-set with a standard parameter range 27. The parameter data 26 is input into the central control device 21 and compared with the standard parameter range 27. If the parameter data 26 exceeds the standard parameter range 27, the corresponding control instruction 28 in the central control device 21 is triggered. The control instruction 28 in the control instruction storage library 211 is output so that its instruction number 212 corresponds to the matching data 254 in the data storage module 252, so that the control instruction 28 and the instruction number 212 in the fault alarm unit 25 correspond to each other. Docking is performed, that is, different parameter data 26 correspond to different control instructions 28. When the parameter data 26 reaches the range, the control instruction 28 is triggered. After the control instruction 28 is confirmed, it is transmitted to the fault alarm unit 25. The control instruction 28 finds the corresponding matching data 254 in the fault alarm unit 25 according to the instruction number 212, and triggers the corresponding alarm audio data 253 to run, and the alarm sounds; at the same time, the central control device 21 controls the drive motor to stop working; wherein, this structure is conducive to the operation control and fault prediction of the submersible pump, and different alarm audios are issued according to the type of fault to prompt the staff the cause of the fault.

[0048] The present invention has good operating stability and good independence between detection data, which avoids mutual interference between detection data, improves the accuracy and controllability of submersible pump protection control, and can also transmit the operating status parameters of the submersible pump, which is convenient for submersible pump operation control and fault prediction, and sends different alarm audios according to the type of fault, and promptly and actively shuts down the submersible pump, ensuring the safety of submersible pump operation.

[0049] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. An automatic submersible pump, characterized in that: The invention comprises a base (1), a driving motor installed in the base (1), and a control component (2); a housing (3) is arranged on the base (1); a side wall of the housing (3) is connected to a water inlet pipe (4); a filter screen is arranged at the water inlet of the water inlet pipe (4); The control assembly (2) comprises a central control device (21), a temperature sensor (22) installed in the base (1) for detecting the driving motor, a flow sensor (23) and a water level detector (24) installed at the water inlet pipe (4), the central control device (21) being connected to a control signal input end, the control signal input end being connected to the temperature sensor (22), the flow sensor (23) and the water level detector (24), the central control device (21) being provided with an output end, the output end being connected to a fault alarm unit (25); The parameter data (26) detected by the temperature sensor (22), the flow sensor (23) and the water level detector (24) are transmitted to the central control device (21) and compared with a set standard parameter range (27). If the parameter data (26) exceeds the standard parameter range (27), the central control device (21) is triggered to issue a control instruction (28) to the fault alarm unit (25), so that the fault alarm unit (25) sounds an alarm, and the central control device (21) controls the drive motor to stop working; The output end of the fault alarm unit (25) is provided with a remote monitoring display for displaying data, and the remote monitoring display is provided with a touch component for generating a corresponding signal instruction in response to a touch operation and an instruction input unit; When it is found that the water level of the water source is greater than the minimum operating water level of the submersible pump, the water flow rate at the water inlet of the submersible pump is within the normal working water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is not higher than the maximum operating temperature of the driving motor, it means that the submersible pump is operating normally; When it is found that the water level of the water source is lower than the minimum operating water level of the submersible pump, the water flow rate at the water inlet of the submersible pump is lower than the normal operating water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is higher than the maximum operating temperature of the driving motor, and the three parameter data appear at the same time, it means that the submersible pump is in a water shortage state or is about to reach a water shortage state, thereby triggering the control instruction issued by the central control device to the fault alarm unit, so that the alarm of the fault alarm unit sounds, and at the same time the central control device controls the driving motor to stop working urgently; During the specific operation, the submersible pump is placed in water, the water level height of the water source is detected by a water level detector, the water flow rate at the water inlet of the submersible pump is detected by a flow sensor, and the operating temperature of the driving motor of the submersible pump is detected by a temperature sensor. The three types of submersible pump operating parameter data are obtained and transmitted to the central control device. The central control device is pre-set with a standard parameter range. The parameter data is input into the central control device and compared with the standard parameter range. If the parameter data exceeds the standard parameter range, the central control device triggers a control instruction to the fault alarm unit, so that the alarm of the fault alarm unit sounds, and the central control device controls the driving motor to stop working. Among them, when the water level of the water source is less than the minimum operating water level of the submersible pump, it means that the submersible pump is about to enter a water-deficient operating state; when the water flow rate at the water inlet of the submersible pump is detected to be lower than the normal working water suction flow range of the submersible pump, it means that the water inlet of the submersible pump is blocked and the water inlet is not smooth; when the operating temperature of the driving motor of the submersible pump is detected to be higher than the maximum operating temperature of the driving motor, it means that the internal excitation coil of the driving motor of the submersible pump is faulty; when it is detected at the same time that the water flow rate at the water inlet of the submersible pump is lower than the normal working water suction flow range of the submersible pump, and the operating temperature of the driving motor of the submersible pump is higher than the maximum operating temperature of the driving motor, it means that the operating load of the submersible pump motor is too large and the rotation resistance of the rotor of the submersible pump motor is too large; The fault alarm unit (25) is provided with an alarm audio storage library (251), the alarm audio storage library (251) is provided with a data storage module (252), the data storage module (252) contains different alarm audio data (253), and the data storage module (252) sorts and stores the alarm audio data (253); The central control device (21) is provided with a control instruction storage library (211), in which different control instructions (28) and instruction numbers (212) generated corresponding to the instructions are set. The control instructions (28) generate different control instructions (28) according to parameter data (26) detected by the temperature sensor (22), the flow sensor (23) and the water level detector (24), and further generate different instruction numbers (212).

2. The self-controlled submersible pump according to claim 1, characterized in that: The instruction number (212) is also stored in the data storage module (252), and the alarm audio data (253) is matched with the instruction number (212) to generate matching data (254).

3. The self-controlled submersible pump according to claim 2, characterized in that: The instruction number (212) in the control instruction storage library (211) corresponds to the matching data (254) in the data storage module (252), so that the control instruction (28) is connected to the instruction number (212) in the fault alarm unit (25). After the control instruction (28) is confirmed, it is transmitted to the fault alarm unit (25). The control instruction (28) finds the corresponding matching data (254) in the fault alarm unit (25) according to the instruction number (212), and triggers the corresponding alarm audio data (253) to run, and the alarm sounds.

4. The self-controlled submersible pump according to claim 1, characterized in that: The driving motor is provided with an output shaft, a boost structure is mounted on the output shaft, the housing (3) is mounted on the base (1) at an external position of the boost structure, a pump cover (5) is mounted on the upper end surface of the housing (3), and a water outlet node (6) is mounted at a middle position of the upper end surface of the pump cover (5).

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