Clean intelligent negative pressure device and system

Abstract

The invention relates to the technical field of negative pressure devices, in particular to a clean intelligent negative pressure device and system.The clean intelligent negative pressure device comprises a negative pressure tank, and the negative pressure tank is connected with a negative pressure pipe; the inlet end of the water circulation vacuumizing assembly is communicated with the negative pressure tank through an air inlet pipe, the outlet end of the water circulation vacuumizing assembly is connected with a circulating water assembly through an exhaust pipe, and the circulating water assembly is provided with an exhaust port; and one end of the drainage pipe is connected with the lower end of the circulating water assembly, the other end of the drainage pipe is connected with the inlet end of the water circulation vacuumizing assembly, a first valve control assembly is installed on the drainage pipe, and the first valve control assembly is electrically connected with the control assembly. According to the invention, noise reduction is facilitated, and the vacuum degree is enough.

Description

Technical Field

[0001] The present invention relates to the technical field of negative pressure devices, and more particularly to a cleaning intelligent negative pressure device and system. Background Art

[0002] A negative pressure device is a device that extracts air through a vacuum pump or a fan to create an environment with a pressure lower than the atmospheric pressure in a specific area or container. Its core purpose is to reduce the number of air molecules to make the internal pressure lower than the external atmospheric pressure, thereby achieving a negative pressure state. Negative pressure devices are widely used in medical, industrial, and laboratory fields.

[0003] A water circulation negative pressure device is a device that uses water as a working fluid to generate negative pressure through jet flow. When a positive displacement pump extracts circulating water at the suction port, a certain negative pressure will be generated at the suction port, and this negative pressure can be used for various purposes, such as vacuum filtration, evaporation, distillation, generating vacuum, etc. Since the water circulation negative pressure device does not generate any oil stains and impurities that pollute the laboratory, it is environmentally friendly, and the whole machine is small in size and light in weight, and is often used in various chemical laboratory operations. However, the existing water circulation negative pressure devices have high noise and insufficient vacuum degree, making it difficult to be further promoted.

[0004] Therefore, those skilled in the art are committed to developing a cleaning intelligent negative pressure device and system to reduce noise and have sufficient vacuum degree. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a cleaning intelligent negative pressure device and system to reduce noise and have sufficient vacuum degree.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: A cleaning intelligent negative pressure device includes a negative pressure tank, and the negative pressure tank is connected with a negative pressure pipe; a water circulation vacuum pumping assembly, the inlet end of the water circulation vacuum pumping assembly is communicated with the negative pressure tank through an intake pipe, the outlet end of the water circulation vacuum pumping assembly is connected with a circulating water assembly through an exhaust pipe, and the circulating water assembly has an exhaust port; a drainage pipe, one end of the drainage pipe is connected to the lower end of the circulating water assembly, the other end of the drainage pipe is connected to the inlet end of the water circulation vacuum pumping assembly, a first valve control assembly is installed on the drainage pipe, and the first valve control assembly is electrically connected to a control assembly.

[0007] The beneficial effects of adopting the above solution are as follows: Through the synergistic effect of the water circulation vacuum pumping component and the circulating water component, water has good energy absorption and shock absorption characteristics, can absorb and disperse noise energy during the operation of the device, thereby reducing noise propagation, effectively reducing the noise level. Especially during high-load operation, it reduces the interference to the working environment, improves the comfort and work efficiency of the operator. At the same time, the water circulation optimizes the energy consumption performance, reduces the energy consumption during the operation of the equipment, and reduces the heat of the equipment. The circulating water component can effectively filter and wash impurities in the gas, reduce the blockage or damage of the pump body and pipeline by impurities, thereby improving the stability and service life of the device. And using water as the working fluid to generate and maintain negative pressure avoids the environmental pollution caused by oil stains and impurities in traditional oil-type negative pressure devices, while reducing water resource waste, and has good environmental protection performance.

[0008] Based on the above technical solutions, the present invention can be further improved as follows.

[0009] Further, the water circulation vacuum pumping component includes a water circulation vacuum pump, the water circulation vacuum pump is connected with a power motor, the water circulation vacuum pump is communicated with the upper end of the negative pressure tank through the intake pipe, and the output end of the water circulation vacuum pump is connected with the circulating water component through the exhaust pipe; A second valve control component is further installed on the intake pipe, a third valve control component is installed on the exhaust pipe, and the second valve control component and the third valve control component are electrically connected to the control component.

[0010] The beneficial effects of adopting the above further solution are as follows: The water circulation vacuum pump has the characteristics of low noise and high efficiency, can effectively reduce the noise level during the operation of the device, and at the same time improve the vacuum pumping efficiency to meet the high vacuum degree requirements; The second valve control component and the third valve control component are electrically connected to the control component, can automatically adjust the intake and exhaust and the intake and exhaust rates according to actual needs, achieve precise control, and improve the automation level of the system.

[0011] Further, the circulating water component includes a circulating water tank, the exhaust port is arranged at the upper end of the circulating water tank, the upper end of the circulating water tank is connected with the water circulation vacuum pumping component through the exhaust pipe, and the lower end of the circulating water tank is communicated with the suction port end of the water circulation vacuum pump through the drainage pipe; A fourth valve control component is installed on the drainage pipe, and the fourth valve control component is electrically connected to the control component.

[0012] The beneficial effects of adopting the above further solution are as follows: The circulating water tank enables the gas discharged from the exhaust pipe to be cooled and filtered by the circulating water, further reducing noise and minimizing the damage of impurities to the system. Meanwhile, it facilitates the water circulation vacuum pump to suck the water and gas in the circulating water tank together and pump them into the circulating water tank to achieve water circulation, while the gas is discharged from the exhaust port.

[0013] Furthermore, a plurality of branch pipes are provided in the circulating water tank, and the branch pipes are all communicated with the exhaust pipe. A honeycomb paper filter screen is installed in the circulating water tank, and the honeycomb paper filter screen is located below the branch pipes.

[0014] The beneficial effects of adopting the above further solution are as follows: The circulating water flows through the branch pipes to the honeycomb paper filter screen, which can effectively filter impurities, prevent impurities from entering the circulating water system, ensure the cleanliness of water circulation, and extend the service life of the device.

[0015] Furthermore, an automatic water filling component is also installed in the circulating water tank; The automatic water filling component includes a water filling pipe and a float valve assembly. The water filling pipe is communicated with the circulating water tank, and the float valve assembly is installed at the outlet end of the water filling pipe, and the float valve assembly is located in the circulating water tank.

[0016] The beneficial effects of adopting the above further solution are as follows: The automatic water filling component realizes automatic water replenishment through the float valve assembly, preventing the water level in the circulating water tank from being too low and affecting the system operation, reducing manual intervention, and improving the automation degree of the system.

[0017] A cleaning intelligent negative pressure system is applied to the cleaning intelligent negative pressure device as described above, and includes a pressure detection module, which is used to detect the vacuum degree in the negative pressure tank; a temperature detection module, which is used to detect the temperature in the negative pressure tank and the water temperature in the circulating water tank; a liquid level detection module, which is used to detect the liquid level of the circulating water in the circulating water tank; a control module, which is used to obtain the pressure detection data of the pressure detection module, and compare the pressure detection data with the pressure set value. When the pressure detection data is less than the first pressure value, the control module sends a power increase instruction to the frequency converter module. When the detection data is greater than the first pressure value and less than the second pressure value, the control module remains silent. When the pressure detection data is greater than the second pressure value, the control module sends a power reduction instruction to the frequency converter module; The control module is used to obtain the detection data of the temperature detection module, and compare the temperature detection data with the temperature set value. When the temperature detection data is greater than the first temperature set value, the control module is used to send a start instruction to the cooling module. When the temperature detection data is greater than the second temperature set value, the control module is used to send a water change instruction to the water change module, and the water change module replaces the high-temperature hot water in the circulation water tank with low-temperature circulating water according to the water change instruction; The control module is used to obtain the water level detection data of the liquid level detection module, and compare the water level detection data with the water level set value. When the water level detection data is less than the water level set value, the control module sends an alarm instruction to the alarm module. When the alarm instruction exceeds the set time, the control module shuts down all operation instructions.

[0018] The beneficial effect of adopting the above further solution is that through the pressure detection module, temperature detection module and liquid level detection module, the operation state of the system is monitored in real time to ensure that the vacuum degree, temperature and water level in the negative pressure tank are always in the best state; The control module dynamically adjusts the system operation parameters according to the detection data. For example, the speed of the power motor is adjusted through the frequency converter module to achieve high-precision vacuum degree control; When the detection data exceeds the safety threshold, the system can issue a warning in time and take protection measures, such as shutting down the operation instruction, effectively protecting the safety of equipment and personnel.

[0019] Further, it also includes a timer module and a switching circuit. The timer is used to control the cyclic timing switching of the first water circulation vacuum pumping assembly and the second water circulation vacuum pumping assembly and is connected to the corresponding switching circuit.

[0020] The beneficial effect of adopting the above further solution is that the timer module controls the timing switching of the first water circulation vacuum pumping assembly and the second water circulation vacuum pumping assembly, avoids single-point failures, improves the overall reliability of the system, and at the same time makes the first water circulation vacuum pumping assembly and the second water circulation vacuum pumping assembly work intermittently; The design of the switching circuit ensures the smoothness of the component switching process, avoids system fluctuations caused by switching, and ensures the stability of system operation.

[0021] Further, the water change module includes a first electric valve, a water change pipe, a sewage pipe and a second electric valve. The first electric valve is installed on the water change pipe, and the water change pipe is connected to the middle of the circulation water tank. The second electric valve is installed on the sewage pipe, and the sewage pipe is installed at the bottom of the circulation water tank; The first electric valve and the second electric valve are electrically connected to the control module. When the first electric valve and the second electric valve receive the water change instruction sent by the control module, the first electric valve and the second electric valve are opened synchronously.

[0022] The beneficial effects of adopting the above further solution are as follows: Through the coordinated operation of the first electric valve and the second electric valve, the water replacement module can quickly replace the high-temperature hot water in the circulation water tank with low-temperature water, and maintain an appropriate liquid level during the water replacement process, thereby reducing the water temperature and improving the cooling effect of the system. At the same time, the impurities in the circulation water tank are discharged through the sewage pipe to maintain the cleanliness of the water circulation and extend the service life of the device.

[0023] Further, the control module integrates an adaptive frequency conversion algorithm, and generates a non-linear PID control signal according to the dynamic deviation between the pressure detection data and the pressure set value; After receiving the non-linear PID control signal, the frequency converter module adjusts the speed of the power motor through vector control technology to stabilize the vacuum degree within an error range of ±1 kPa.

[0024] The beneficial effects of adopting the above further solution are as follows: The adaptive frequency conversion algorithm generates a non-linear PID control signal according to the dynamic deviation between the pressure detection data and the set value, realizing high-precision vacuum degree control with the error range controlled within ±1 kPa; The frequency converter module adjusts the speed of the power motor through vector control technology to ensure the stable operation of the system under different working conditions, improving the reliability and adaptability of the system.

[0025] Further, it also includes a wireless communication module and a cloud monitoring platform. The control module is connected to the wireless communication module through an RS485 interface, and uploads pressure, temperature, and water level data to the cloud monitoring platform in real time; When the detected data exceeds the safety threshold, the cloud platform pushes a warning message to the mobile terminal and generates a fault code log.

[0026] The beneficial effects of adopting the above further solution are as follows: The introduction of the wireless communication module and the cloud monitoring platform realizes the real-time remote monitoring of the system operation status, facilitating the management personnel to timely understand the operation of the equipment; When the detected data exceeds the safety threshold, the cloud platform can timely push a warning message to the mobile terminal and generate a fault code log, which is convenient for quickly locating and solving problems and improving the maintenance efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the cleaning intelligent negative pressure device of the present invention; Figure 2 It is a schematic diagram of the internal structure of a specific embodiment of the cleaning intelligent negative pressure device of the present invention Figure 1 ; Figure 3 It is a schematic diagram of the internal structure of a specific embodiment of the cleaning intelligent negative pressure device of the present invention Figure 2 。

[0028] Figure 4 This is the functional module diagram of the second specific embodiment of the present invention.

[0029] In the attached drawings, the list of components represented by each label is as follows: 1. Negative pressure tank; 2. Negative pressure pipe; 3. Water circulation vacuum pumping assembly; 4. Air inlet pipe; 5. Exhaust pipe; 6. Circulating water assembly; 7. Drainage pipe; 8. First valve control assembly; 9. Control assembly; 10. Water circulation vacuum pump; 11. Power motor; 12. Circulating water tank; 13. Branch pipe; 14. Honeycomb paper filter; 15. Water supply pipe; 16. Float valve assembly; 17. Second valve control assembly; 18. Third valve control assembly; 19. Fourth valve control assembly; 20. Box body; 21. Water exchange pipe; 22. Sewage pipe; 23. Second electric valve. Specific embodiments

[0030] The principles and features of the present invention will be described below with reference to the attached drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0031] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential direction", etc. are based on the orientation or positional relationships shown in the attached drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the system or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0034] As Figure 1 、 Figure 2 and Figure 3 shown, a cleaning intelligent negative pressure device includes Negative pressure tank 1, the negative pressure tank 1 is connected with a negative pressure pipe 2, and the negative pressure tank 1 is used to store and maintain a negative pressure environment and is connected to an external system that needs to maintain negative pressure through the negative pressure pipe 2; Water circulation vacuum pumping assembly 3, the inlet end of the water circulation vacuum pumping assembly 3 is communicated with the negative pressure tank 1 through an air inlet pipe 4. Its main function is to use the water circulation method to extract the gas in the negative pressure tank 1, so as to maintain or enhance the negative pressure state. The outlet end of the water circulation vacuum pumping assembly 3 is connected with a circulating water assembly 6 through an exhaust pipe 5. The circulating water assembly 6 has an exhaust port, and the circulating water assembly 6 discharges the gas through the exhaust port, and at the same time realizes the recycling of water; Drainage pipe 7, one end of the drainage pipe 7 is connected to the lower end of the circulating water assembly 6, the other end of the drainage pipe 7 is connected to the inlet end of the water circulation vacuum pumping assembly 3, and a first valve control assembly 8 is installed on the drainage pipe 7, and the first valve control assembly 8 is electrically connected to the control assembly 9.

[0035] In the present invention, through the synergistic action of the water circulation vacuum pumping assembly 3 and the circulating water assembly 6, the device can effectively reduce the noise level during operation. Especially during high-load operation, it reduces the interference to the working environment, improves the comfort and work efficiency of the operator. At the same time, the water circulation optimizes the energy consumption performance, reduces the energy consumption during the operation of the equipment, and reduces the heat of the equipment.

[0036] Two water circulation vacuum pumping assemblies 3 are connected in series on the air inlet pipe 4. The water circulation vacuum pumping assembly 3 includes a water circulation vacuum pump 10. The water circulation vacuum pump 10 is connected with a power motor 11. The water circulation vacuum pump 10 is communicated with the upper end of the negative pressure tank 1 through the air inlet pipe 4. The output end of the water circulation vacuum pump 10 is connected with the circulating water assembly 6 through the exhaust pipe 5. The power motor 11 is used to drive the pump body to work, extract the gas in the negative pressure tank 1 and send it into the circulating water assembly 6 through the exhaust pipe 5.

[0037] A second valve control assembly 17 is also installed on the air inlet pipe 4. The second valve control assembly 17 is electrically connected to the control assembly 9. A third valve control assembly 18 is installed on the exhaust pipe 5, and a fourth valve control assembly 19 is installed on the drainage pipe 7. Both the third valve control assembly 18 and the fourth valve control assembly 19 are electrically connected to the control assembly 9. Among them, the first valve control assembly 8, the second valve control assembly 17, the third valve control assembly 18 and the fourth valve control assembly 19 can all adopt electric ball valves. The opening degrees of each electric ball valve are precisely controlled by the control assembly 9, so as to adjust the power of the power motor 11 according to the actual situation.

[0038] Such as Figure 2 、Such as Figure 3As shown, in some embodiments, the circulating water assembly 6 includes a circulating water tank 12. An exhaust port is provided at the upper end of the circulating water tank 12 for discharging the sucked gas. The upper end of the circulating water tank 12 is connected to the water circulation vacuum pumping assembly 3 through an exhaust pipe 5. The lower end of the circulating water tank 12 is communicated with the suction port end of the water circulation vacuum pump 10 through a drainage pipe 7.

[0039] As Figure 3 shown, a plurality of branch pipes 13 are further provided in the circulating water tank 12. The branch pipes 13 are all communicated with the exhaust pipe 5, so that the gas and the circulating water in the exhaust pipe 5 are evenly discharged from the branch pipes 13. A honeycomb paper filter screen 14 is installed in the circulating water tank 12. The honeycomb paper filter screen 14 is located below the branch pipes 13 and is used for filtering impurities in the gas and the circulating water to ensure the cleanliness of the circulating water.

[0040] In the embodiment, in order to ensure the stable water level in the circulating water tank 12, the device is also equipped with an automatic water adding assembly. Specifically, the automatic water adding assembly includes a water adding pipe 15 and a float valve assembly 16. The water adding pipe 15 is located in the middle of the circulating water tank 12. The water adding pipe 15 is communicated with the circulating water tank 12, and a float valve assembly 16 is installed at its outlet end. The float valve assembly 16 is located inside the circulating water tank 12 and automatically controls the inflow of water through the up and down floating of the float ball, thereby realizing the automatic adjustment of the water level.

[0041] The whole device realizes efficient negative pressure maintenance and water circulation utilization through the coordinated work of parts such as the negative pressure tank 1, the water circulation vacuum pumping assembly 3, the circulating water assembly 6, and the drainage pipe 7. And the negative pressure tank 1, the water circulation vacuum pumping assembly 3, the circulating water assembly 6, and the drainage pipe 7 are all installed in the box body 20. Through the precise control of each valve control assembly by the control assembly 9, the device can flexibly adjust the working state under different working conditions to ensure the stable operation of the system. Embodiment Two

[0042] As Figure 4 shown, a cleaning intelligent negative pressure system is applied to the cleaning intelligent negative pressure device as described above and includes a pressure detection module, a temperature detection module, a liquid level detection module, and a control module. The pressure detection module can adopt a high-precision pressure sensor to monitor the vacuum degree in the negative pressure tank in real time and transmit the detected data to the control module at a millisecond-level frequency. The temperature detection module uses a dual-channel thermistor sensor to detect the ambient temperature in the negative pressure tank and the water temperature in the circulating water tank respectively to ensure the stable operation of the system under different working conditions. The liquid level detection module uses an ultrasonic liquid level gauge to monitor the liquid level of the circulating water in the circulating water tank in real time to avoid affecting the normal operation of the system due to too low or too high water level.

[0043] The control module can adopt an embedded processor with high-speed data processing capabilities. First, the control module obtains the pressure data from the pressure detection module and dynamically compares it with the preset pressure set value. When the pressure detection data is lower than the first pressure value, the control module sends a power increase command to the frequency converter module through the RS485 communication interface, causing the power motor to accelerate and quickly increasing the vacuum degree in the negative pressure tank 1; when the pressure detection data is between the first pressure value and the second pressure value, the control module remains silent and maintains the system in the economic operation mode; when the pressure detection data exceeds the second pressure value, the control module sends a power reduction command to the frequency converter module, reducing the speed of the power motor 11 and the vacuum pumping power, achieving dynamic intelligent control.

[0044] Meanwhile, the control module analyzes the temperature detection data in real time. When it detects that the temperature in the negative pressure tank 1 or the water temperature in the circulating water tank 12 exceeds the first temperature set value, the control module sends a start command to the cooling module to start the water cooling or air cooling device and reduce the system temperature; when the temperature detection data exceeds the second temperature set value, the control module sends a water change command to the water change module.

[0045] Specifically, the water change module includes a first electric valve, a water change pipe 21, a sewage pipe 22, and a second electric valve 23. The first electric valve is installed on the water change pipe 21 and connected to the middle of the circulating water tank 12 to ensure that the new water can be evenly injected. The sewage pipe 22 is installed at the bottom of the circulating water tank 12, and the second electric valve 23 controls the opening and closing of the sewage pipe. When receiving the water change command, the first electric valve and the second electric valve 23 are opened simultaneously, and the high-temperature hot water and bottom impurities are discharged through the sewage pipe. At the same time, the low-temperature circulating water is injected through the water change pipe, ensuring that the liquid level in the circulating water tank 12 remains within a reasonable range and ensuring the cooling effect of the circulating water.

[0046] The control module monitors the liquid level detection data in real time. Further, when the water level in the circulating water tank is lower than the set value, the control module sends an alarm command to the alarm module, triggering the sound and light alarm device to remind the operator; if the alarm duration exceeds the set threshold, the control module will automatically shut down all operation commands to ensure system safety.

[0047] To further improve the intelligent level of the system, the control module integrates an adaptive frequency conversion algorithm. This algorithm generates a non-linear PID control signal based on the dynamic deviation between the pressure detection data and the set value. After receiving this signal, the frequency converter module precisely adjusts the speed of the power motor through vector control technology, ensuring that the vacuum degree in the negative pressure tank is stable within an error range of ±1 kPa, meeting the high-precision process requirements.

[0048] The system is also equipped with a timer module and a switching circuit, which are used to control the timed switching of the first water circulation vacuum pumping assembly and the second water circulation vacuum pumping assembly. The timer module realizes the automatic switching of the assemblies through the switching circuit according to the preset operating cycle, ensuring that the system will not stop due to a single-point failure during long-term operation, and significantly improving the reliability and redundancy of the system.

[0049] In the embodiment, the system is connected to the cloud monitoring platform through a wireless communication module. The control module uploads real-time data such as pressure, temperature, and water level to the cloud platform through the RS485 interface. The cloud platform has data storage, analysis, and visualization functions, and users can view the system operation status at any time through a mobile terminal. When the detected data exceeds the safety threshold, the cloud platform automatically pushes a warning message to the user and generates a detailed fault code log to help the user quickly locate the problem and take measures to ensure the efficient operation and long-term stability of the system. Embodiment Three

[0050] The difference between Embodiment Three and Embodiment Two is only that the end of the sewage pipe is connected to a waste water recovery tank, and a pH value sensor and an activated carbon filter layer are provided in the tank. When the second electric valve 23 is opened, the high-temperature waste water enters the recovery tank for temporary storage after being filtered by the activated carbon, and the data of the pH value sensor is synchronously fed back to the control module, triggering the automatic dosing device of the neutralizing agent to ensure that the waste water meets the environmental protection discharge standard. In addition, the control module is configured with an energy-saving operation mode. When the liquid level detection data is continuously higher than 80% of the set value for 10 minutes and the temperature is lower than 30°C, it automatically switches to the low-frequency pulse working state, and the power motor runs intermittently with a start-stop cycle of 15 seconds, effectively reducing energy consumption.

[0051] In other embodiments, the system also includes a safety interlock unit. When any of the following conditions is met, the control module immediately cuts off the power supply of the power motor and activates the mechanical pressure relief valve: 1. The pressure detection data exceeds -100 kPa and lasts for 5 seconds; 2. The water level in the circulation water tank is lower than the lowest warning line and the alarm instruction has not been responded to for 2 minutes; 3. The winding temperature of the power motor reaches 120°C to ensure that the system can quickly make a safe response in case of an abnormality.

[0052] The control module integrates a vacuum degree prediction model. This model is based on the time series correlation between historical pressure detection data and the operating parameters of the power motor, and generates the future five-minute vacuum degree change trend through machine learning algorithms. When the predicted vacuum degree deviates from the set range, the control module adjusts the output power of the frequency converter module in advance to achieve precise control of the vacuum degree and improve the stability and reliability of the system.

[0053] In this embodiment, the cloud monitoring platform is connected to a digital twin system, which synchronizes the sensor data of physical devices in real time and simulates the device operation status. When the water level of the circulation water tank 12 is detected to be abnormal, the digital twin system automatically generates a three-dimensional visual alarm interface and marks the topological path of the fault point, facilitating the operator to quickly locate and solve the problem.

[0054] The system is also equipped with a redundant pressure sensor array, including at least three pressure sensors installed on the inner wall of the negative pressure tank in a 120° circular distribution. The control module uses a majority voting mechanism to screen valid pressure detection data, and automatically marks a single sensor data as a failure node when its deviation from the other sensors exceeds 10%, ensuring the accuracy and reliability of the pressure detection data.

[0055] The switching circuit is configured with a dynamic load balancing strategy. When the first water circulation vacuum pumping component runs continuously for more than 2 hours and the temperature exceeds 45°C, it automatically switches to the second water circulation vacuum pumping component and triggers the self-cooling circulation process of the first component, extending the service life of the component and improving the overall performance of the system.

[0056] The control module is connected to a voiceprint recognition unit, which collects the operating noise spectrum of the power motor and compares it with a preset noise feature library. When the characteristic frequencies of blade breakage or bearing wear are recognized, a three-level alarm is activated and the current vacuum degree maintenance mode is locked, timely warning of equipment failures and ensuring the safe operation of the system.

[0057] In the embodiment, the waste water recovery tank is connected to an external distillation device through a pipeline, and a conductivity sensor is provided inside the tank. When the conductivity of the waste water is detected to be lower than 50 μS / cm, the control module turns on the distillation device to perform secondary purification of the waste water, and the purified deionized water is injected into the circulation water tank through a reflux pipe, realizing the recycling of water resources and reducing the operating cost of the system. Embodiment Four

[0058] The difference between Embodiment Four and Embodiment One, Embodiment Two, and Embodiment Three is only that the control module also integrates an FPGA edge computing node, which processes pressure, temperature, and vibration data in real time (response time < 10 ms), collaborates with the cloud digital twin platform, synchronizes the whole system data every 30 seconds, predicts the device health status in the next 1 hour through an LSTM neural network, and accurately generates a maintenance plan (such as the replacement cycle error of the water circulation vacuum pump is ±50 hours).

[0059] Moreover, for the medical negative pressure isolation scenario, an aerosol leakage monitoring module is added: a laser particle counter is installed at the outlet of the negative pressure tank. When the number of particles above 0.3 μm is detected to exceed 1000 per m³, the negative pressure pipe is automatically closed and the HEPA filtration emergency mode is started; the operation interface integrates dual-factor authentication of fingerprint recognition and RFID card. Unauthorized operations trigger system locking and upload security logs to the supervision platform.

[0060] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cleaning intelligent negative pressure device, characterized in that: include A negative pressure tank (1), wherein the negative pressure tank (1) is connected to a negative pressure pipe (2); A water circulation vacuum pumping component (3), wherein the inlet end of the water circulation vacuum pumping component (3) is connected to the negative pressure tank (1) via an air inlet pipe (4), and the outlet end of the water circulation vacuum pumping component (3) is connected to a circulating water component (6) via an exhaust pipe (5), and the circulating water component (6) has an exhaust port; A drainage pipe (7), one end of the drainage pipe (7) is connected to the lower end of the circulating water component (6), and the other end of the drainage pipe (7) is connected to the inlet end of the water circulation vacuum pumping component (3); a first valve control component (8) is installed on the drainage pipe (7), and the first valve control component (8) is electrically connected to the control component (9).

2. The cleaning intelligent negative pressure device according to claim 1, characterized in that: The water circulation vacuum pumping assembly (3) comprises a water circulation vacuum pump (10), the water circulation vacuum pump (10) being connected to a power motor (11), the water circulation vacuum pump (10) being connected to the upper end of the negative pressure tank (1) via the air inlet pipe (4), and the output end of the water circulation vacuum pump (10) being connected to the circulating water assembly (6) via the exhaust pipe (5); A second valve control component (17) is also installed on the intake pipe (4), and a third valve control component (18) is installed on the exhaust pipe (5); the second valve control component (17) and the third valve control component (18) are electrically connected to the control component (9).

3. The cleaning intelligent negative pressure device according to claim 2, characterized in that: The circulating water assembly (6) comprises a circulating water tank (12), the exhaust port being arranged at the upper end of the circulating water tank (12), the upper end of the circulating water tank (12) being connected to the water circulating vacuum pumping assembly (3) via the exhaust pipe (5), and the lower end of the circulating water tank (12) being connected to the suction port of the water circulating vacuum pump (10) via the drainage pipe (7); A fourth valve control component (19) is installed on the drainage tube (7), and the fourth valve control component (19) is electrically connected to the control component (9).

4. The cleaning intelligent negative pressure device according to claim 3, characterized in that: A plurality of branch pipes (13) are also provided in the circulating water tank (12), and the branch pipes (13) are all in communication with the exhaust pipe (5). A honeycomb paper filter (14) is installed in the circulating water tank (12), and the honeycomb paper filter (14) is located at the lower side of the branch pipe (13).

5. The cleaning intelligent negative pressure device according to claim 3, characterized in that: An automatic water adding component is also installed in the circulating water tank (12); The automatic water adding assembly comprises a water adding pipe (15) and a float valve assembly (16); the water adding pipe (15) is in communication with the circulating water tank (12); the float valve assembly (16) is installed at the outlet end of the water adding pipe (15); and the float valve assembly (16) is located in the circulating water tank (12).

6. A cleaning intelligent negative pressure system, applied to the cleaning intelligent negative pressure device according to any one of claims 1 to 5, characterized in that: include A pressure detection module, wherein the pressure detection module is used to detect the vacuum degree in the negative pressure tank; A temperature detection module, which is used to detect the temperature in the negative pressure tank and the water temperature in the circulating water tank; A liquid level detection module, wherein the liquid level detection module is used to detect the circulating water level in the circulating water tank; A control module, wherein the control module is used to obtain pressure detection data of the pressure detection module and compare the pressure detection data with a pressure setting value. When the pressure detection data is less than a first pressure value, the control module sends a power increase instruction to the inverter module. When the detection data is greater than the first pressure value and less than a second pressure value, the control module remains silent. When the pressure detection data is greater than the second pressure value, the control module sends a power reduction instruction to the inverter module. The control module is used to obtain the detection data of the temperature detection module and compare the temperature detection data with the temperature setting value. When the temperature detection data is greater than the first temperature setting value, the control module is used to send a start instruction to the cooling module. When the temperature detection data is greater than the second temperature setting value, the control module is used to send a water change instruction to the water change module. The water change module replaces the high-temperature hot water in the circulating water tank with low-temperature circulating water according to the water change instruction. The control module is used to obtain the water level detection data of the liquid level detection module and compare the water level detection data with the water level setting value. When the water level detection data is less than the water level setting value, the control module sends an alarm instruction to the alarm module. When the alarm instruction exceeds the set time, the control module shuts down all operation instructions.

7. The cleaning intelligent negative pressure system according to claim 6, characterized in that: It also includes a timer module and a switching circuit, wherein the timer is used to control the cycle timing switching of the first water circulation vacuum pumping component and the second water circulation vacuum pumping component and is connected to the corresponding switching circuit.

8. The cleaning intelligent negative pressure system according to claim 6, characterized in that: The water exchange module comprises a first electric valve, a water exchange pipe (21), a sewage pipe (22) and a second electric valve (23); the first electric valve is mounted on the water exchange pipe (21), and the water exchange pipe (21) is connected to the middle of a circulating water tank (12); the second electric valve (23) is mounted on the sewage pipe (22), and the sewage pipe (22) is mounted at the bottom of the circulating water tank (12); The first electric valve and the second electric valve (23) are electrically connected to the control module, and when the first electric valve and the second electric valve (23) receive a water change instruction issued by the control module, the first electric valve and the second electric valve (23) are opened synchronously.

9. The cleaning intelligent negative pressure system according to claim 6, characterized in that: The control module is integrated with an adaptive frequency conversion algorithm to generate a nonlinear PID control signal according to the dynamic deviation between the pressure detection data and the pressure setting value; After receiving the nonlinear PID control signal, the inverter module adjusts the speed of the power motor through vector control technology to stabilize the vacuum degree within the error range of ±1kPa.

10. The cleaning intelligent negative pressure system according to claim 6, characterized in that: It also includes a wireless communication module and a cloud monitoring platform. The control module is connected to the wireless communication module via an RS485 interface to upload pressure, temperature, and water level data to the cloud monitoring platform in real time; When the detection data exceeds the safety threshold, the cloud platform pushes warning information to the mobile terminal and generates a fault code log.

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