Intelligent bottom suction type submersible pump and control system thereof

Abstract

The invention relates to the technical field of fluid machinery, and discloses an intelligent bottom suction type submersible pump and a control system thereof.The intelligent bottom suction type submersible pump comprises a shell, a mounting seat is fixedly connected to the lower surface of the shell, a fixing block is fixedly connected to the inner wall of the shell, and a driving motor is fixedly connected to the interior of the shell; the output end of the driving motor is connected with a first rotating block, a transmission assembly is arranged in the first rotating block and connected with a fixing block, the inner wall of the fixing block is rotationally connected with a rotating shaft, the transmission assembly is connected with the rotating shaft, and a cleaning assembly is arranged on the outer wall of the upper side of the rotating shaft. And an impeller is fixedly connected to the outer wall of the lower side of the rotating shaft. The driving motor is started to drive the first rotating block to rotate, then the transmission assembly starts to operate under driving of the first rotating block, and therefore the effects that a low-water-level water source is extracted, the weight of the submersible pump is reduced, the portability of the submersible pump is improved, the blocking risk of the submersible pump is reduced, and long-term normal operation of the submersible pump is guaranteed can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of fluid machinery, and particularly to an intelligent bottom-suction submersible pump and its control system. Background Art

[0002] Fluid machinery is a device that uses fluids (liquids or gases) as the working medium and realizes energy conversion, fluid transportation, or state change through mechanical motion. Its core functions include the two-way conversion of mechanical energy and fluid energy, the directional transmission of fluids, and the regulation of parameters such as pressure / velocity / temperature. It is classified into power machinery that converts fluid energy into mechanical energy (such as water turbines for power generation), working machinery that converts mechanical energy into fluid energy (such as centrifugal pumps for chemical transportation), and energy utilization machinery that utilizes fluid energy to complete specific functions (such as torque converters for automotive transmissions), and is applied in fields such as energy, chemical industry, water conservancy, aerospace, etc. Among them, submersible pumps are a widely used type of fluid machinery.

[0003] Existing submersible pumps drive the impeller to rotate at high speed through an electric motor, and use centrifugal force (or volume change) to achieve fluid transportation. When the impeller rotates, the blades push the liquid to the edge and throw it out, forming a low-pressure area in the center of the impeller. The external liquid flows in through the suction port under the action of the pressure difference to fill it. The thrown liquid converts kinetic energy into pressure energy in the pump casing and is then output through the discharge pipeline, and can continuously complete the cycle of water absorption, pressurization, and drainage. However, existing submersible pumps are difficult to adapt to low water level environments and are prone to clogging the internal pipelines, resulting in the submersible pump being unable to operate normally for a long time. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides an intelligent bottom-suction submersible pump and its control system, which solves the problem that the existing submersible pump is difficult to adapt to low water level environments and is prone to clogging the internal pipelines, resulting in the submersible pump being unable to operate normally for a long time.

[0005] To achieve the above objectives, the present invention is realized through the following technical solutions: An intelligent bottom-suction submersible pump includes a housing, the lower surface of the housing is fixedly connected with a mounting seat, the inner wall of the housing is fixedly connected with a fixed block, a driving motor is fixedly connected inside the housing, the output end of the driving motor is connected with a first rotating block, a transmission assembly is arranged inside the first rotating block, the transmission assembly is connected with the fixed block, a rotating shaft is rotatably connected to the inner wall of the fixed block, the transmission assembly is connected with the rotating shaft, a cleaning assembly is arranged on the outer wall above the rotating shaft, an impeller is fixedly connected to the outer wall below the rotating shaft, a first guide block is fixedly connected to the outer wall of the fixed block, a second guide block is fixedly connected to the inner wall of the housing, a water inlet block is fixedly connected to the inner wall of the housing, and a drain pipe is fixedly connected inside the housing.

[0006] Through the above technical solution, after the driving motor starts, it drives the first rotating block to rotate on its own axis. Through the transmission component, it drives the rotating shaft to rotate, and then drives the impeller to rotate on its own axis to generate a vortex pressure difference, enabling external water to flow into the interior through the groove of the water inlet block. The groove can filter out large impurities, and the impeller crushes fibers and sediment to prevent blockage. The first and second guide blocks are arranged at a certain angle to intercept impurities and make them settle, while the water flow is directed to the drain pipe. The outer shell is made of stainless steel and sprayed with an epoxy resin primer, with corrosion resistance, anti-fouling, and lightweight characteristics. Thus, it can achieve the effect of pumping low-level water sources, reducing the weight of the submersible pump, enhancing the portability of the submersible pump, reducing the risk of blockage of the submersible pump, and ensuring the long-term normal operation of the submersible pump.

[0007] Preferably, the transmission component includes a rotating block. The outer wall of the rotating block is fixedly connected to the inside of the first rotating block. The outer wall of the rotating block is rotatably connected to a transmission gear. The tooth end of the transmission gear is meshed with a transmission gear ring. The lower surface of the transmission gear ring is fixedly connected to a connecting block.

[0008] Preferably, the outer wall of the transmission gear ring is rotatably connected to the inner wall of a fixed block. The outer wall of the connecting block is fixedly connected to the outer wall of the rotating shaft.

[0009] Preferably, the cleaning component includes a rotating rod. The outer wall of the rotating rod is fixedly connected to the outer wall of the rotating shaft. A return spring is arranged inside the rotating rod. A first cleaning block is arranged on the outer wall of the return spring. The outer wall of the first cleaning block is fixedly connected to a second cleaning block. The outer wall of the second cleaning block is arranged on the inner wall of the outer shell.

[0010] Preferably, a water level sensor is fixedly connected to the inner wall of the water inlet block. A vibration sensor is fixedly connected to the inner wall of the outer shell. A flow sensor is fixedly connected to the inner wall of the outer shell. A temperature sensor is fixedly connected to the inner wall of the outer shell. A controller is fixedly connected to the inner wall of the fixed block. A communication module is fixedly connected to the inner wall of the fixed block. The controller is connected to the communication module. The controller is connected to the temperature sensor. The controller is connected to the flow sensor. The controller is connected to the vibration sensor. The controller is connected to the water level sensor.

[0011] Preferably, a control system for an intelligent bottom-suction submersible pump includes:

[0012] Data acquisition module: including a water level sensor, a vibration sensor, a flow sensor, and a temperature sensor, for collecting physical signals in real time and converting them into electrical signals;

[0013] Data processing module: It includes a controller, a communication module, and a cloud platform. After signal acquisition, preliminary processing is completed by the controller. The controller executes sensor data parsing, protection logic, and variable frequency algorithms to adjust the motor speed. The controller uploads data to the cloud platform through the communication module to generate an energy efficiency analysis report and push abnormal alarms;

[0014] Motor drive module: It includes a drive motor that receives controller instructions to complete start / stop control and speed regulation, and adapts to dynamic adjustment of variable frequency algorithms;

[0015] Human-machine interaction module: With the mobile phone APP as the carrier, it provides real-time data display and remote instruction sending functions. The instructions are relayed to the controller through the cloud platform.

[0016] Preferably, the user sends a "start" instruction through the mobile phone APP, which is forwarded to the controller by the cloud platform. The controller remotely controls the drive motor to start, and at the same time initializes the data acquisition module. The drive motor drives the rotating shaft and impeller to start through the transmission component. The data collected by the sensor in real time is uploaded to the cloud platform through the communication module, and the APP synchronously displays the motor speed and flow operation status.

[0017] Preferably, when the water level sensor detects that the water level is lower than the preset threshold, the controller immediately cuts off the power supply of the drive motor to trigger shutdown protection. When the vibration sensor detects an abnormal vibration value, the controller sends a fault code to the cloud platform through the communication module. After parsing by the cloud platform, an alarm message is pushed to the user APP, and the fault time and type are recorded in the cloud platform.

[0018] Preferably, the controller real-time collects the current flow value Q and head parameter H monitored by the flow sensor, and calculates the motor speed n using the formula n = k·(Q / H), where k represents the motor characteristic efficiency coefficient. Subsequently, the controller dynamically adjusts the power supply frequency of the drive motor through the PWM signal to make the motor speed adapt to the flow change requirements in real time.

[0019] Preferably, the mobile phone APP supports multi-device cluster monitoring, can simultaneously display the real-time data of no less than 10 submersible pumps, and supports grouped management by region and device type. The start / stop instructions sent by the user through the APP have a priority queue mechanism. When multiple devices receive instructions simultaneously, the cloud platform sorts them according to the instruction sending timestamp and forwards them to the corresponding controllers in sequence to avoid communication conflicts.

[0020] Working principle: Start the drive motor to drive the first rotating block to rotate. Subsequently, the transmission component starts to operate under the drive of the first rotating block, and then the rotating shaft rotates under the action of the transmission component. At this time, the impeller starts to rotate under the drive of the rotating shaft. During the rotation of the impeller, a vortex pressure difference will be generated. Under the action of this pressure difference, the water source outside the water inlet block will enter the water inlet block and the housing in sequence through the grooves opened on the water inlet block. The grooves opened inside the water inlet block can isolate large impurities and ensure the entry of water. The impeller crushes the fibers and sediment in the water to avoid blockage of the drain pipe. The first guide block and the second guide block are arranged at a certain angle. Such a structural design enables the crushed fibers and sediment to be intercepted and fall under their own gravity, while the water can flow into the drain pipe through the first guide block and the second guide block and be pumped out. The housing is made of a stainless steel shell, and an epoxy resin primer is sprayed on the outside of the housing. This design can improve the corrosion resistance and anti-fouling ability of the housing, and at the same time ensure that the housing has the characteristics of light weight, so as to achieve the effect of pumping low-level water sources, reducing the weight of the submersible pump, improving the portability of the submersible pump, reducing the risk of blockage of the submersible pump, and ensuring the long-term normal operation of the submersible pump.

[0021] The first rotating block drives the second rotating block to rotate. At the same time, the transmission gear rotates under the drive of the transmission gear ring, and the transmission gear ring rotates under the drive of the transmission gear. Then, the connecting block rotates under the drive of the transmission gear ring. Subsequently, the rotating shaft rotates under the drive of the connecting block. The drive motor uses a rare earth permanent magnet motor, and the transmission component is used to assist the drive motor in frequency conversion to adjust the speed of the impeller, so as to achieve the effects of reducing energy consumption, saving costs, adjusting the pumping speed of the submersible pump, reducing energy waste, and improving the operating efficiency of the drive motor.

[0022] Through the interception of the first guide block and the second guide block, the crushed impurities fall and adhere to the inner wall of the housing under the action of the vortex. At this time, the rotating rod rotates under the drive of the rotating shaft. Subsequently, the rotating rod drives the first cleaning block to rotate synchronously through the return spring. Then, the second cleaning block rotates under the drive of the first cleaning block. At this time, the second cleaning block brushes the impurities inside the housing, so as to achieve the effect of ensuring the cleanliness of the inner wall of the housing, avoiding the accumulation of impurities, and preventing the inner wall of the housing from being corroded, thereby extending the service life of the submersible pump.

[0023] When the water level detected by the water level sensor is lower than the preset threshold, the sensor immediately converts the signal into an electrical signal and transmits it to the controller. After receiving the signal, the controller first judges the validity of the signal through internal logic. After confirming that the water level is indeed lower than the threshold, it performs the operation of cutting off the power supply of the drive motor. The drive motor stops rotating, the submersible pump shuts down. At the same time, the controller sends the fault code of "shutdown due to too low water level" to the cloud platform through the communication module. The cloud platform records the detailed information of this fault in the database for subsequent fault analysis and equipment maintenance reference, so as to prevent the submersible pump from idling and dry burning due to too low water level, reduce the risk of mechanical wear and motor overheating, and reduce the maintenance cost.

[0024] The vibration sensor is used to monitor the vibration of the shell in real time and collect the acceleration data and transmit it to the controller. When the vibration value exceeds the preset threshold continuously for 3 times, the controller immediately controls the drive motor to reduce the speed to idle speed, and sends the fault code of "abnormal vibration" including vibration data, rotation speed and duration to the cloud platform through the communication module. After analysis by the cloud platform, a yellow warning is pushed to the user APP for mild abnormality, and a red alarm is pushed for severe abnormality and shutdown is recommended. The user can view the real-time vibration waveform. The cloud platform stores and statistically records the abnormalities. When the monthly abnormality of the equipment is ≥3 times, a maintenance work order is automatically generated and sent to the operation and maintenance email. At the same time, the cloud platform has a built-in fault code library and treatment solutions, and automatically matches historical cases when detecting abnormal vibration, so as to quickly put forward targeted maintenance suggestions and shorten the fault handling time.

[0025] The real-time data of multiple submersible pumps are simultaneously displayed on the cluster monitoring interface of the mobile APP. The submersible pumps are grouped and managed by region or equipment type. The group can be switched through the left drop-down menu. After selecting the device and clicking the start / stop button, the APP generates a millisecond-level timestamp and sends the instruction to the cloud platform together. The cloud platform establishes a priority queue according to the timestamp sequence and forwards the instructions to the corresponding controller at intervals of 50 milliseconds in turn. After receiving the instruction, the controller immediately performs the corresponding operation and feeds back the execution result to the cloud platform through the communication module. The cloud platform then synchronizes the result to the mobile APP, and the user can see the instruction execution status on the interface, so as to facilitate the user to customize the grouping according to the region and equipment type, simultaneously monitor the real-time data of multiple submersible pumps, select devices across groups, batch send start / stop and speed regulation instructions, reduce repeated operations, and improve the operation and maintenance efficiency.

[0026] The present invention provides an intelligent bottom-suction submersible pump and its control system. It has the following beneficial effects:

[0027] 1. The present invention drives the first rotating block to rotate by starting the driving motor. Subsequently, the transmission assembly starts to operate under the drive of the first rotating block, and then the rotating shaft rotates under the action of the transmission assembly. At this time, the impeller starts to rotate under the drive of the rotating shaft. During the rotation of the impeller, a vortex pressure difference is generated, so as to achieve the effect of pumping low-level water sources, reducing the weight of the submersible pump, improving the portability of the submersible pump, reducing the risk of blockage of the submersible pump, and ensuring the long-term normal operation of the submersible pump.

[0028] 2. The present invention drives the second rotating block to rotate through the first rotating block. At the same time, the transmission gear rotates by itself under the drive of the transmission gear ring, and at the same time, the transmission gear ring rotates under the drive of the transmission gear. Then, the connecting block rotates under the drive of the transmission gear ring, so as to achieve the effects of reducing energy consumption, saving costs, adjusting the pumping speed of the submersible pump, reducing energy waste, and improving the operating efficiency of the driving motor.

[0029] 3. Through the interception of the first guide block and the second guide block, the crushed impurities fall and adhere to the inner wall of the housing under the action of the vortex. At this time, the rotating rod rotates under the drive of the rotating shaft, so as to achieve the effect of ensuring the cleanliness of the inner wall of the housing, avoiding the accumulation of impurities, preventing the inner wall of the housing from being corroded, and thus extending the service life of the submersible pump.

[0030] 4. When the water level sensor detects that the water level is lower than the preset threshold, the sensor immediately converts the signal into an electrical signal and transmits it to the controller. After receiving the signal, the controller first judges the validity of the signal through internal logic. After confirming that the water level is indeed lower than the threshold, it performs the operation of cutting off the power supply of the driving motor. The driving motor stops rotating and the submersible pump shuts down, so as to achieve the effects of preventing the submersible pump from idling and dry burning due to too low water level, reducing the risk of mechanical wear and motor overheating, avoiding damage to the submersible pump, and reducing the maintenance cost.

[0031] 5. The present invention uses a vibration sensor to continuously monitor the vibration of the housing and collect acceleration data and transmit it to the controller. When the vibration value exceeds the preset threshold three times in a row, the controller immediately controls the driving motor to reduce its speed to idle speed and sends a fault code to the cloud platform through the communication module. After analysis by the cloud platform, a warning is pushed, so as to achieve the effects of quickly putting forward targeted maintenance suggestions and shortening the fault handling time, quickly outputting maintenance suggestions and shortening the fault handling time.

[0032] 6. The present invention simultaneously displays the real-time data of a plurality of submersible pumps through the cluster monitoring interface of the mobile phone APP, manages the submersible pumps by grouping them according to regions or equipment types, switches groups through the left drop-down menu, and after selecting a device and clicking the start / stop button, the APP generates a millisecond-level timestamp and sends it together with the instruction to the cloud platform. The cloud platform establishes a priority queue according to the timestamp sequence, so that it is convenient for users to customize the grouping of a plurality of submersible pumps, monitor the real-time data of the submersible pumps, select devices across groups, and batch send start / stop and speed regulation instructions, reducing repeated operations and improving the operation and maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 FIG. is a three-dimensional structural schematic diagram of an intelligent bottom-suction submersible pump proposed by the present invention;

[0034] Figure 2 FIG. is a schematic cross-sectional view of the internal structure of the housing of an intelligent bottom-suction submersible pump proposed by the present invention;

[0035] Figure 3 FIG. is a partial structural schematic diagram of the impeller of an intelligent bottom-suction submersible pump proposed by the present invention;

[0036] Figure 4 FIG. is a partial structural schematic diagram of the transmission gear ring of an intelligent bottom-suction submersible pump proposed by the present invention;

[0037] Figure 5 FIG. is a partial structural schematic diagram of the rotating rod of an intelligent bottom-suction submersible pump proposed by the present invention;

[0038] Figure 6 FIG. is a partial structural schematic diagram of the rotating rod of an intelligent bottom-suction submersible pump proposed by the present invention;

[0039] Figure 7 FIG. is a system framework diagram of the control system of an intelligent bottom-suction submersible pump proposed by the present invention;

[0040] Figure 8 FIG. is a schematic flow diagram of the control system of an intelligent bottom-suction submersible pump proposed by the present invention.

[0041] Wherein, 1. Housing; 2. Mounting seat; 3. Fixed block; 4. Driving motor; 5. First rotating block; 6. Transmission assembly; 61. Second rotating block; 62. Transmission gear; 63. Transmission gear ring; 64. Connecting block; 7. Rotating shaft; 8. Impeller; 9. First guide block; 10. Second guide block; 11. Drain pipe; 12. Cleaning assembly; 121. Rotating rod; 122. Return spring; 123. First cleaning block; 124. Second cleaning block; 13. Water inlet block; 14. Water level sensor; 15. Vibration sensor; 16. Flow sensor; 17. Temperature sensor; 18. Controller; 19. Communication module. DETAILED DESCRIPTION OF THE INVENTION

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0043] Embodiment 1:

[0044] Please refer to the attached Figure 1 - attached Figure 3 The embodiment of the present invention provides an intelligent bottom-suction submersible pump, which includes a housing 1. A mounting seat 2 is fixedly connected to the lower surface of the housing 1. A fixing block 3 is fixedly connected to the inner wall of the housing 1. A driving motor 4 is fixedly connected to the inside of the housing 1. The output end of the driving motor 4 is connected to a rotating block 5. A transmission assembly 6 is arranged inside the rotating block 5. The transmission assembly 6 is connected to the fixing block 3. A rotating shaft 7 is rotatably connected to the inner wall of the fixing block 3. The transmission assembly 6 is connected to the rotating shaft 7. A cleaning assembly 12 is arranged on the outer wall above the rotating shaft 7. An impeller 8 is fixedly connected to the outer wall below the rotating shaft 7. A guide block 9 is fixedly connected to the outer wall of the fixing block 3. A guide block 10 is fixedly connected to the inner wall of the housing 1. An inlet block 13 is fixedly connected to the inner wall of the housing 1. A drain pipe 11 is fixedly connected to the inside of the housing 1;

[0045] Specifically, by starting the driving motor 4 to drive the rotating block 5 to rotate self, then the transmission assembly 6 operates under the drive of the rotating block 5, and then the rotating shaft 7 rotates self under the drive of the transmission assembly 6. Since the impeller 8 is fixedly connected to the rotating shaft 7, at this time the impeller 8 rotates self under the drive of the rotating shaft 7. At this time, the impeller 8 rotates self to generate a vortex pressure difference. The water source outside the inlet block 13 enters the inside of the inlet block 13 and the housing 1 in sequence through the grooves opened in the inlet block 13 under the action of the pressure difference. The grooves opened inside the inlet block 13 isolate large impurities and ensure the entry of water. At the same time, the impeller 8 crushes the fibers and sediment inside the water to avoid blocking the drain pipe 11. A guide block 9 is installed outside the fixing block 3, and a guide block 10 is installed inside the housing 1. The guide block 9 and the guide block 10 form a certain angle, which makes the crushed fibers and sediment be intercepted and fall under the action of their own weight. At the same time, the water can pass through the guide block 9 and the guide block 10, and then the water flows into the drain pipe 11 and is pumped out. The housing 1 is made of a stainless steel shell, and at the same time, an epoxy resin primer is sprayed on the outside of the housing 1 to improve the corrosion resistance and anti-pollution ability of the housing 1 and ensure the light weight of the housing 1. Thus, the extraction of low-level water sources can be achieved, the weight of the submersible pump can be reduced, the portability of the submersible pump can be improved, and the blockage of the submersible pump can be prevented.

[0046] Refer to the attached Figure 2 - attached Figure 4, the transmission assembly 6 includes a second rotating block 61. The outer wall of the second rotating block 61 is fixedly connected to the inside of the first rotating block 5. The outer wall of the second rotating block 61 is rotatably connected to a transmission gear 62. The tooth end of the transmission gear 62 is meshed with a transmission gear ring 63. The lower surface of the transmission gear ring 63 is fixedly connected to a connecting block 64; the outer wall of the transmission gear ring 63 is rotatably connected to the inner wall of the fixed block 3, and the outer wall of the connecting block 64 is fixedly connected to the outer wall of the rotating shaft 7;

[0047] Specifically, since the first rotating block 5 and the second rotating block 61 are fixedly connected, the second rotating block 61 rotates around the first rotating block 5 driven by the first rotating block 5. At the same time, the transmission gear 62 rotates self-driven by the transmission gear ring 63, and at the same time, the transmission gear ring 63 rotates inside the fixed block 3 driven by the transmission gear 62. Since the connecting block 64 is fixedly connected to the transmission gear ring 63, the connecting block 64 rotates driven by the transmission gear ring 63. Since the connecting block 64 is fixedly connected to the rotating shaft 7, the rotating shaft 7 rotates self-driven by the connecting block 64. The drive motor 4 uses a rare earth permanent magnet motor, and the efficiency of the rare earth permanent magnet motor reaches 93%-96%, while that of the traditional motor is only 60%-80%. The power factor of the rare earth permanent magnet motor is increased to 0.95-0.99, and the comprehensive energy saving is 20%-30%. At the same time, the transmission assembly 6 is used to assist the drive motor 4 to frequency-convert and adjust the rotation speed of the impeller 8, so as to achieve energy saving, cost reduction, convenient adjustment of the pumping speed of the submersible pump, reduction of energy waste, and improvement of the operating efficiency of the drive motor 4.

[0048] Refer to the appendix Figure 2 、appendix Figure 5 and appendix Figure 6 , the cleaning assembly 12 includes a rotating rod 121. The outer wall of the rotating rod 121 is fixedly connected to the outer wall of the rotating shaft 7. A return spring 122 is arranged inside the rotating rod 121. A first cleaning block 123 is arranged on the outer wall of the return spring 122. The outer wall of the first cleaning block 123 is fixedly connected to a second cleaning block 124. The outer wall of the second cleaning block 124 is arranged on the inner wall of the housing 1;

[0049] Specifically, through the interception of the first diversion block 9 and the second diversion block 10, the crushed impurities fall and adhere to the inner wall of the housing 1 under the action of the eddy current. Since the rotating rod 121 is fixedly connected to the rotating shaft 7, the rotating rod 121 rotates around the rotating shaft 7 driven by the rotating shaft 7. Subsequently, the rotating rod 121 drives the first cleaning block 123 to rotate synchronously through the return spring 122. Since the second cleaning block 124 is fixedly connected to the first cleaning block 123, at this time, the second cleaning block 124 rotates around the rotating shaft 7 driven by the first cleaning block 123. At this time, the second cleaning block 124 brushes the impurities inside the housing 1. The return spring 122 is used to assist the second cleaning block 124 to closely adhere to the inner wall of the housing 1 to avoid cleaning dead corners, so as to ensure the cleanliness of the inner wall of the housing 1, avoid impurity accumulation, and prevent corrosion of the inner wall of the housing 1.

[0050] Refer to the appendix Figure 2 Figure 2 , a water level sensor 14 is fixedly connected to the inner wall of the water inlet block 13, a vibration sensor 15 is fixedly connected to the inner wall of the housing 1, a flow sensor 16 is fixedly connected to the inner wall of the housing 1, a temperature sensor 17 is fixedly connected to the inner wall of the housing 1, a controller 18 is fixedly connected to the inner wall of the fixing block 3, a communication module 19 is fixedly connected to the inner wall of the fixing block 3, the controller 18 is connected to the communication module 19, the controller 18 is connected to the temperature sensor 17, the controller 18 is connected to the flow sensor 16, the controller 18 is connected to the vibration sensor 15, and the controller 18 is connected to the water level sensor 14;

[0051] Specifically, the water level sensor 14 is used to monitor the water level inside the water inlet block 13. When the water level sensor 14 is not covered by water, it sends a signal to the controller 18. The vibration sensor 15 is used to monitor whether abnormal vibration occurs in the housing 1 to avoid accidents. The flow sensor 16 monitors the change in the water flow rate inside the housing 1 to ensure the normal operation of the submersible pump. The temperature sensor 17 is used to monitor the change in the temperature inside the housing 1 to monitor the overheating of the drive motor 4. The controller 18 is used to integrate and receive the signals sent by the water level sensor 14, vibration sensor 15, flow sensor 16, and temperature sensor 17. The communication module 19 is used to transmit the data preliminarily processed by the controller 18 to the cloud platform.

[0052] Embodiment 2:

[0053] Please refer to the appendix Figure 1 - Appendix Figure 8 , a control system for an intelligent bottom-suction submersible pump, including:

[0054] Data acquisition module: including a water level sensor 14, a vibration sensor 15, a flow sensor 16, and a temperature sensor 17, which are used to collect physical signals in real time and convert them into electrical signals;

[0055] Data processing module: including a controller 18, a communication module 19, and a cloud platform. After the signal acquisition is completed through the controller 18, the controller 18 performs preliminary processing, executes sensor data parsing, protection logic, and variable frequency algorithm to adjust the motor speed. The controller 18 uploads the data to the cloud platform through the communication module 19 to realize the generation of energy efficiency analysis reports and the push of abnormal alarms;

[0056] Motor drive module: including a drive motor 4, which receives instructions from the controller 18 to complete start-stop control and speed adjustment, and adapts to dynamic adjustment of the variable frequency algorithm;

[0057] Human-computer interaction module: taking the mobile phone APP as the carrier, providing real-time data display and remote instruction sending functions, and the instructions are transferred to the controller 18 through the cloud platform;

[0058] Specifically, in the data acquisition module, the water level sensor 14 uses an ultrasonic liquid level gauge. By emitting ultrasonic waves and receiving the reflected echoes, it calculates the liquid level height, achieving a measurement accuracy of 0.1% FS and being able to monitor the water level change in the container in real time. The vibration sensor 15 is a piezoelectric acceleration sensor, closely attached to the outer shell of the drive motor 4 of the motor drive module, used to capture the vibration signal during motor operation. By analyzing parameters such as the frequency and amplitude of the vibration, it can predict in advance whether the motor has faults such as bearing wear and rotor imbalance. The flow sensor 16 selects an electromagnetic flowmeter, which is connected in series in the pipeline. Based on the principle of electromagnetic induction, it measures the fluid flow rate, is suitable for the measurement of conductive liquids, and has the characteristics of high measurement accuracy and small pressure loss, being able to accurately obtain the real-time flow rate data of the fluid in the pipeline. The temperature sensor 17 uses a Pt100 thermal resistor, which is arranged at key parts such as the winding and bearing of the drive motor 4 and in the environment respectively, and can accurately measure the temperature change, providing a reliable basis for the temperature monitoring and protection of the system.

[0059] In the data processing module, the program built into the controller 18 can parse the sensor data in real time. It can compare the measured value of the water level sensor 14 with the preset high and low water level thresholds. When the water level is lower than the low water level threshold, it immediately triggers the water shortage shutdown protection logic, controls the drive motor 4 to stop running through the motor drive module, avoiding equipment damage due to water shortage. At the same time, the controller 18 generates corresponding control signals according to the real-time flow rate data detected by the flow sensor 16, adjusts the speed of the drive motor 4, so that the output flow rate of the system can be stabilized near the set value, realizing constant flow control. The controller 18 uploads the processed sensor data, equipment operation status and other information to the cloud platform through the communication module 19. The cloud platform can deeply mine and analyze the uploaded data, generate an energy efficiency analysis report, help users understand the energy consumption status of the system, and provide a basis for energy-saving optimization. At the same time, the cloud platform also has an abnormal alarm function. When detecting data anomalies or equipment failures, it can send alarm messages to relevant personnel in a timely manner through text messages, APP push, etc., so as to handle problems in a timely manner.

[0060] The drive motor 4 of the motor drive module is a three-phase asynchronous motor, used in conjunction with a variable frequency speed regulator. The speed adjustment command output by the controller 18 is transmitted to the variable frequency speed regulator through the analog output module or communication interface. The variable frequency speed regulator adjusts the frequency and voltage of the output power supply in real time according to the command, thereby changing the speed of the drive motor 4. During the startup process, the variable frequency speed regulator adopts a soft start method, gradually increasing the motor speed and reducing the impact of the startup current on the power grid; during the operation process, it dynamically adjusts the speed according to the command of the controller 18 to achieve precise control of the system output; in addition, the motor drive module is also equipped with safety devices such as overload protection and short-circuit protection to ensure the safe and reliable operation of the drive motor 4 and the entire system.

[0061] The human-machine interaction module can view data such as water level, flow rate, temperature, motor speed, and power in real time through the mobile phone APP. These data are presented in a combination of charts and numbers, facilitating users to intuitively understand the operating status of the system. There are start / stop buttons on the APP interface. After the user clicks the button, the instruction is transmitted to the cloud platform through the mobile phone network. The cloud platform then forwards the instruction to the controller 18, which controls the start and stop of the drive motor 4. At the same time, the APP can also display the power curve in real time to help users analyze the energy consumption change trend of the system. When the system malfunctions, the APP will promptly send an alarm prompt, display the alarm type and occurrence time, and provide fault handling suggestions. Users can set the alarm thresholds for various parameters, view historical data, generate reports, etc. on the APP to achieve comprehensive monitoring and management of the system.

[0062] See the appendix Figure 1 - Appendix Figure 8 When the user sends a "start" instruction through the mobile phone APP and it is forwarded to the controller 18 via the cloud platform, the controller 18 remotely controls the drive motor 4 to start, and at the same time initializes the data acquisition module. The drive motor 4 drives the rotating shaft 7 and the impeller 8 to start through the transmission component 6. The data collected by the sensors in real time are uploaded to the cloud platform through the communication module 19, and the APP synchronously displays the motor speed and flow operation status.

[0063] Specifically, the user opens the mobile phone APP, selects the target submersible pump in the device list, and clicks the green "start" button on the interface. This instruction is transmitted to the cloud platform through the mobile phone network. After the cloud platform analyzes the instruction, it forwards the start signal to the communication module 19 through the 5G communication link, and then the communication module 19 forwards the information to the controller 18. After receiving the instruction, the controller 18 first conducts an initial detection of each sensor (water level sensor 14, vibration sensor 15, flow sensor 16, and temperature sensor 17) of the data acquisition module. After confirming that the sensor status is normal, it sends a start instruction to the drive motor 4. After receiving the instruction, the drive motor 4 drives the rotating shaft 7 and the impeller 8 to start rotating through the transmission component 6, and the submersible pump enters the operating state. At the same time, the water level, vibration, flow, and temperature signals collected by each sensor in real time are converted into electrical signals after analog-to-digital conversion and uploaded to the cloud platform at a frequency of 10 times per second through the communication module 19. After the cloud platform analyzes and stores the data, the mobile phone APP synchronously displays the operating status parameters such as motor speed, flow rate, head, voltage, and current in real time, and the power curve on the interface is updated dynamically. If the device status is normal, the APP displays a green "running" logo.

[0064] See the appendix Figure 1 - Appendix Figure 8, when the water level sensor 14 detects that the water level is lower than the preset threshold, the controller 18 immediately cuts off the power supply of the drive motor 4 to trigger shutdown protection. When the vibration sensor 15 detects an abnormal vibration value, the controller 18 sends a fault code to the cloud platform through the communication module 19. After parsing, the cloud platform pushes an alarm message to the user APP and records the fault time and type in the cloud platform;

[0065] Specifically, when the submersible pump runs continuously and causes the water level to drop, and the water level sensor 14 detects that the water level is lower than the preset threshold, the sensor immediately converts the signal into an electrical signal and transmits it to the controller 18. After receiving the signal, the controller 18 first judges the validity of the signal through internal logic. After confirming that the water level is indeed lower than the threshold, it performs the operation of cutting off the power supply of the drive motor 4. The drive motor 4 stops rotating, and the submersible pump shuts down. At the same time, the controller 18 sends a fault code of "shutdown due to too low water level" to the cloud platform through the communication module 19. After receiving the fault code, the cloud platform immediately parses and generates an alarm message, including the device number, fault type, occurrence time, etc., and sends it to the user's mobile phone through the APP push function. A prompt box pops up on the APP interface. The cloud platform will also record the detailed information of this fault in the database for subsequent fault analysis and equipment maintenance reference, so as to prevent the submersible pump from idling and dry burning due to too low water level, reduce the risk of mechanical wear and motor overheating, and reduce the maintenance cost; The vibration sensor 15 continuously monitors the vibration condition of the housing 1, collects vibration acceleration data (unit: m / s 2 ), and transmits the data to the controller 18. The controller 18 internally presets a normal vibration acceleration threshold range. When the collected vibration value exceeds the threshold continuously for 3 times, it is determined that an abnormal vibration occurs. At this time, the controller 18 first sends a deceleration command to the drive motor 4 to reduce the motor speed to the idle state to reduce the risk of equipment damage. At the same time, the controller 18 sends a fault code of "abnormal vibration" to the cloud platform through the communication module 19, and attaches the current vibration data, motor speed, running time, etc. After receiving the fault code, the cloud platform immediately analyzes the data to judge the degree of abnormality. If it is a mild abnormality, the cloud platform pushes a yellow warning message to the user APP to prompt the user to pay attention to observing the equipment status. If it is a severe abnormality, a red alarm message is pushed and it is recommended to shut down and repair immediately. The user can view the real-time vibration waveform diagram on the APP for further analysis of the abnormal cause. In addition, the cloud platform will store and count the records of each vibration abnormality. When the same device has 3 or more vibration abnormalities within a month, a maintenance reminder work order will be automatically generated and sent to the work email of the operation and maintenance personnel to remind them to conduct a comprehensive inspection and maintenance of the equipment, so as to achieve the effect of quickly putting forward targeted maintenance suggestions and shortening the fault handling time.

[0066] Refer to the appendix Figure 1 - Appendix Figure 8, the controller 18 collects in real time the current flow rate value Q and the head parameter H monitored by the flow sensor 16, and calculates the motor speed n using the formula n = k·(Q / H), where k represents the motor characteristic efficiency coefficient. Subsequently, the controller 18 dynamically adjusts the power supply frequency of the drive motor 4 through a PWM signal, so that the motor speed can adapt to the flow rate change requirements in real time;

[0067] Specifically, the controller 18 collects in real time the current flow rate value Q (unit: m 3 / h) monitored by the flow sensor 16 and the head parameter H (unit: m) calculated through an internal algorithm. The controller 18 calculates the motor speed n using the formula n = k·(Q / H), where k is the motor characteristic efficiency coefficient, which is pre-stored in the memory of the controller 18 through the characteristic test before the motor leaves the factory. The k values of different models of motors are different. After the calculation is completed, the controller 18 generates a corresponding PWM signal according to the speed n. The duty cycle of this signal is in a proportional relationship with the speed requirement. The PWM signal is transmitted to the frequency converter of the drive motor 4 through a drive circuit, and the frequency converter dynamically adjusts the power supply frequency according to the signal, thereby changing the speed of the drive motor 4.

[0068] Refer to the appendix Figure 1 - Appendix Figure 8 , the mobile phone APP supports multi-device cluster monitoring, can display the real-time data of no less than 10 submersible pumps at the same time, and supports grouping management by region and device type. The start / stop instructions sent by the user through the APP have a priority queue mechanism. When multiple devices receive instructions at the same time, the cloud platform sorts them according to the instruction sending timestamp and forwards them to the corresponding controller 18 in turn to avoid communication conflicts;

[0069] Specifically, the cluster monitoring interface of the mobile phone APP can display the real-time data of multiple submersible pumps at the same time. The user can group and manage the submersible pumps by region or device type according to actual needs, and quickly switch to view the device status of different groups through the grouping drop-down menu on the left side of the interface. When the user needs to send a start / stop instruction to a certain device, select the device on the APP interface and click the corresponding button. The APP will generate a unique timestamp for each instruction, which is accurate to the millisecond level. The instruction and the timestamp are transmitted to the cloud platform together. When the cloud platform receives instructions from multiple devices, it will establish a priority queue according to the order of the instruction timestamps. The cloud platform forwards the instructions to the corresponding controller 18 in priority order in turn, and the interval between each forwarding is 50 milliseconds to ensure that the communication link does not conflict. After receiving the instruction, the controller 18 immediately executes the corresponding operation and feeds back the execution result to the cloud platform through the communication module 19. The cloud platform then synchronizes the result to the mobile phone APP, and the user can see the instruction execution status on the interface.

[0070] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent bottom-suction submersible pump, comprising a housing (1), characterized in that: The lower surface of the shell (1) is fixedly connected to a mounting seat (2); the inner wall of the shell (1) is fixedly connected to a fixing block (3); the interior of the shell (1) is fixedly connected to a driving motor (4); the output end of the driving motor (4) is connected to a rotating block (5); a transmission assembly (6) is arranged inside the rotating block (5); the transmission assembly (6) is connected to the fixing block (3); the inner wall of the fixing block (3) is rotatably connected to a rotating shaft (7); the transmission assembly (6) is connected to the rotating shaft (7); a cleaning assembly (12) is arranged on the upper outer wall of the rotating shaft (7); an impeller (8) is fixedly connected to the lower outer wall of the rotating shaft (7); a guide block (9) is fixedly connected to the outer wall of the fixing block (3); a guide block (10) is fixedly connected to the inner wall of the shell (1); a water inlet block (13) is fixedly connected to the inner wall of the shell (1); and a drain pipe (11) is fixedly connected to the interior of the shell (1).

2. The intelligent bottom suction submersible pump according to claim 1, characterized in that: The transmission assembly (6) comprises a second rotating block (61), the outer wall of which is fixedly connected to the interior of the first rotating block (5), the outer wall of which is rotatably connected to a transmission gear (62), the tooth end of which is meshingly connected to a transmission gear ring (63), and the lower surface of which is fixedly connected to a connection block (64).

3. The intelligent bottom suction submersible pump according to claim 2, characterized in that: The outer wall of the transmission gear ring (63) is rotatably connected to the inner wall of the fixed block (3), and the outer wall of the connecting block (64) is fixedly connected to the outer wall of the rotating shaft (7).

4. The intelligent bottom suction submersible pump according to claim 1, characterized in that: The cleaning assembly (12) comprises a rotating rod (121), the outer wall of the rotating rod (121) is fixedly connected to the outer wall of the rotating shaft (7), a return spring (122) is arranged inside the rotating rod (121), a cleaning block 1 (123) is arranged on the outer wall of the return spring (122), the outer wall of the cleaning block 1 (123) is fixedly connected to the cleaning block 2 (124), and the outer wall of the cleaning block 2 (124) is arranged on the inner wall of the housing (1).

5. The intelligent bottom suction submersible pump according to claim 1, characterized in that: The inner wall of the water inlet block (13) is fixedly connected to a water level sensor (14), the inner wall of the outer shell (1) is fixedly connected to a vibration sensor (15), the inner wall of the outer shell (1) is fixedly connected to a flow sensor (16), the inner wall of the outer shell (1) is fixedly connected to a temperature sensor (17), the inner wall of the fixed block (3) is fixedly connected to a controller (18), the inner wall of the fixed block (3) is fixedly connected to a communication module (19), the controller (18) is connected to the communication module (19), the controller (18) is connected to the temperature sensor (17), the controller (18) is connected to the flow sensor (16), the controller (18) is connected to the vibration sensor (15), and the controller (18) is connected to the water level sensor (14).

6. A control system for an intelligent bottom-suction submersible pump, characterized in that: An intelligent bottom-suction submersible pump for use in any one of claims 1 to 6, comprising: Data acquisition module: comprising a water level sensor (14), a vibration sensor (15), a flow sensor (16) and a temperature sensor (17), for real-time acquisition of physical signals and conversion into electrical signals; The data processing module includes a controller (18), a communication module (19) and a cloud platform. The controller (18) completes preliminary processing after signal acquisition. The controller (18) performs sensor data analysis, protection logic and frequency conversion algorithm to adjust the motor speed. The controller (18) uploads data to the cloud platform through the communication module (19) to realize energy efficiency analysis report generation and abnormal alarm push. The motor drive module includes a drive motor (4), receives commands from a controller (18), completes start / stop control and speed regulation, and dynamically adjusts the frequency conversion algorithm; Human-computer interaction module: Using a mobile phone APP as a carrier, it provides real-time data display and remote command sending functions, and the commands are transferred to the controller through the cloud platform (18).

7. The control system of an intelligent bottom suction submersible pump according to claim 6, characterized in that: The user sends a "start" command through the mobile phone APP and forwards it to the controller (18) through the cloud platform. The controller (18) remotely controls the drive motor (4) to start up and initializes the data acquisition module at the same time. The drive motor (4) drives the rotating shaft (7) and the impeller (8) to start up through the transmission component (6). The data collected by the sensor in real time is uploaded to the cloud platform through the communication module (19), and the APP synchronously displays the motor speed and flow running status.

8. The control system of an intelligent bottom suction submersible pump according to claim 6, characterized in that: When the water level sensor (14) detects that the water level is lower than a preset threshold, the controller (18) immediately cuts off the power supply of the drive motor (4) and triggers shutdown protection. When the vibration sensor (15) detects an abnormal vibration value, the controller (18) sends a fault code to the cloud platform through the communication module (19). After analysis, the cloud platform pushes the alarm information to the user APP and records the fault time and type to the cloud platform.

9. The control system of an intelligent bottom suction submersible pump according to claim 6, characterized in that: The controller (18) collects the current flow value Q and the head parameter H monitored by the flow sensor (16) in real time, and calculates the motor speed n using the formula n=k·(Q / H), where k represents the motor characteristic efficiency coefficient. Subsequently, the controller (18) dynamically adjusts the power supply frequency of the drive motor (4) through a PWM signal so that the motor speed adapts to the flow change requirements in real time.

10. The control system of an intelligent bottom suction submersible pump according to claim 6, characterized in that: The mobile phone APP supports multi-device cluster monitoring, can display the real-time data of no less than 10 submersible pumps at the same time, and supports group management by region and device type. The start and stop instructions sent by the user through the APP have a priority queue mechanism. When multiple devices receive instructions at the same time, the cloud platform sorts them according to the instruction sending timestamp and forwards them to the corresponding controller (18) in sequence to avoid communication conflicts.

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