Automatic cleaning system for dust on the surface of cooler of open-pit rock drill in mines
By designing an automatic cleaning system, the surface of the open-pit rock drilling rig is automatically and intelligently cleaned by using temperature sensors and compressed air, which solves the problem of cooler blockage and improves the maintenance efficiency and safety of the equipment.
Patent Information
- Application Number
- CN202411292986.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2044-09-14
AI Technical Summary
Dust accumulation on the surface of the cooler of the open-pit rock drill rig leads to clogging of the cooler, affecting the effectiveness of the machine cooling system, and leading to engine and screw machine failure. The existing cleaning methods are time-consuming and labor-intensive and have poor results.
An automatic cleaning system is designed, including a user interface module, sensor module, control unit module, compressed air supply module and actuator module. The surface temperature of the cooler is monitored through a temperature sensor, intelligently decide on the cleaning process, and use compressed air for automatic cleaning, providing three cleaning modes: active, automatic and intelligent.
It realizes automated and intelligent cleaning of the cooler surface, reduces manual operations, improves cleaning efficiency and equipment reliability, reduces maintenance costs and downtime risks, and ensures the normal operation of the cooler.
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Figure CN119187119B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of automatic cleaning of engineering machinery, in particular to an automatic cleaning system for dust on the surface of a cooler of an open-pit rock drill in a mine. Background Art
[0002] Rock drilling rigs are primarily used in open-pit mines. Their working environment is plagued by large amounts of dust, oil mist, catkins, and other debris, which can easily accumulate on the cooler fin surface along the cooling air duct and are difficult to clean. Over time, this can lead to clogged holes in the cooler's aluminum fins, seriously affecting the effectiveness of the machine's cooling system. This can cause the engine water temperature, air compressor oil temperature, and hydraulic oil temperature to become too high, leading to faults and preventing the machine from operating normally. In severe cases, the engine and screw machine can even be burned. Currently, the traditional method is to wait for the cooler to become clogged, and then the operator flushes the cooler with high-pressure water, or manually cleans the cooler fins with an air gun at the end of each shift. Without effective preventive measures, the system is extremely inconvenient, time-consuming, and labor-intensive, with poor results.
[0003] To this end, the present invention proposes an automatic cleaning system for dust on the surface of a cooler of an open-pit rock drill in a mine, which can automatically clean debris on the surface of the cooler, effectively preventing the cooler from being blocked and avoiding cooling system failures. Summary of the Invention
[0004] In view of the deficiencies of the prior art, the present invention provides an automatic cleaning system for dust on the surface of a cooler of an open-pit rock drill in a mine, thereby solving the problems raised in the background art.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an automatic cleaning system for dust on the surface of a cooler of an open-pit rock drill in a mine, comprising a user interface module, a sensor module, a control unit module, a compressed air supply module, an actuator module, and a timing and logic control module;
[0006] The user interface module is integrated into the cab and is equipped with an operating interface and physical switches, allowing the operator to manually activate the cleaning sequence or make system settings; the sensor module integrates a temperature sensor array to perform continuous temperature monitoring tasks, provide real-time feedback of temperature data on the cooler surface, and provide the necessary input signals for the controller; the control unit module is used to receive signals from the sensor module and make intelligent decisions on the start of the cleaning process based on preset algorithms and thresholds; the compressed air supply module includes a screw machine, an air storage tank and a pressure reducing valve, which are responsible for providing and regulating the compressed air required for cleaning, jointly ensuring a stable supply and precise regulation of compressed air during the cleaning process; the actuator module includes solenoid valves and nozzles, where the nozzles are evenly distributed on the surface of the cooler casing. The solenoid valves receive signals from the controller to control the release of compressed air, while the nozzles are responsible for spraying the compressed air onto the cooler surface in the form of precise high-speed airflow to achieve efficient cleaning; the timing and logic control module is used to automatically control the start and stop of the cleaning process according to the system's preset schedule or conditions based on logical judgment, ensuring the automation and intelligence of the cleaning operation.
[0007] Preferably, the cleaning system includes three cleaning modes, including active mode, automatic mode, and intelligent mode.
[0008] Preferably, the active mode system process is:
[0009] a. Preliminary assessment and safety check: Assess dust accumulation on the cooler surface and ensure the drill rig is in a safe shutdown state in preparation for activating the cleaning system. b. Manual activation of the cleaning system: Entering the cab, the operator manually presses the start button on the control panel to activate the cleaning system, and the controller then commands the solenoid valve to open. c. Execute the cleaning operation: Compressed air generated by the screw compressor in the compressed air supply module enters the air tank, is adjusted to the set pressure by the pressure reducing valve, and is sprayed out from the nozzle to efficiently clean the cooler surface. The operator monitors the cleaning effect in real time through the monitoring system and adjusts the pressure reducing valve on the control panel to change the cleaning intensity as needed. d. Cleaning completion and system reset: After the dust is removed, the operator presses the stop button, closes the solenoid valve, and ends the cleaning process. The system is then reset.
[0010] It is worth mentioning that the active mode ensures precise control and high efficiency of the cleaning process, while ensuring operational safety and equipment maintenance management;
[0011] Preferably, the automatic mode system process is:
[0012] a. Preset cleaning plan: The system automatically plans cleaning tasks through the built-in task scheduler based on a preset schedule or periodic working mode; the operator or maintenance team sets the cycle frequency and specific execution time of the cleaning operation through the user interface module according to the actual usage status of the equipment and environmental factors; b. Automatically trigger cleaning: When the system reaches the preset cleaning time point, the control unit module automatically responds to the time signal, automatically triggering the opening of the two-way solenoid valve without manual operation, thereby starting the compressed air supply and entering the cleaning process; c. Perform standardized cleaning: Compressed air is blown through the nozzle to perform standardized cleaning operations on the cooler surface according to the preset pressure and flow parameters; the system design ensures that each cleaning can achieve the expected cleaning effect and meet the standardized cleaning requirements; d. End of cleaning and system self-test: After the cleaning task is completed, the control unit module automatically closes the two-way solenoid valve and terminates the compressed air supply; the system then enters the self-test program to check whether all components have been reset to the initial state and prepare for the next cleaning task.
[0013] It is worth noting that the automatic mode provides a cleaning solution that does not require manual intervention, ensuring that the cooler surface is effectively cleaned regularly, while reducing the operator's workload and improving the maintenance efficiency and reliability of the mine's surface rock drill rigs;
[0014] Preferably, the intelligent mode system process is:
[0015] a. Real-time temperature monitoring: The system monitors the surface temperature of the cooler in real time through temperature sensors installed on the cooler, ensuring timely response to temperature changes. b. Automatically trigger the cleaning mechanism: When the temperature sensor detects that the surface temperature of the cooler exceeds the preset safety range, the controller automatically triggers the cleaning process to reduce the temperature and prevent the equipment from overheating. c. Intelligent cleaning operation: Based on real-time temperature data, the controller intelligently adjusts the pressure and flow of compressed air through a closed-loop feedback control system, precisely blowing the cooler surface through the nozzle to effectively remove dust and impurities. d. Continuous monitoring and temperature adjustment: During the cleaning process, the system continuously monitors the temperature and dynamically adjusts the cleaning intensity based on real-time feedback from the cooler temperature to ensure that the cooler temperature returns to a safe operating range. e. End of cleaning and system reset: When the cooler temperature drops below the preset safety threshold, the controller automatically closes the solenoid valve, ending the cleaning process. The system then performs a self-check to ensure that all components are reset and records the cleaning event, including the start conditions, cleaning duration, and temperature changes, providing detailed data for subsequent equipment maintenance and performance analysis.
[0016] It is worth noting that the intelligent mode realizes the automation and intelligent management of the cooler cleaning process through advanced monitoring and control technology, improving the operating efficiency and safety of the mine surface rock drill rig, while reducing equipment failures and maintenance costs caused by overheating;
[0017] Preferably, the cleaning trigger logic in the automatic trigger cleaning mechanism is: the temperature sensor collects the temperature data of the cooler surface in real time, and sets the cooler's safe temperature threshold T according to the equipment manufacturer's recommendations and historical operating data. max The controller receives temperature data in real time and compares it with the preset safety threshold. When the monitored temperature T sensor More than T max When the temperature drops below the safety threshold, the cleaning process will stop automatically.
[0018] Preferably, the system cleaning duration is calculated as:
[0019]
[0020] Among them, the temperature at the beginning of cleaning is T start , the safety temperature threshold is T max , the cleaning efficiency is E, where E is the amount of temperature drop per unit time, then the cleaning duration t clean .
[0021] Preferably, the cleaning demand evaluation logic in the dynamic adjustment of the cleaning intensity according to the temperature drop is as follows: the temperature data T of the cooler surface is collected in real time by the temperature sensor. sensor , set the high temperature threshold T high and low temperature threshold T low , where T high >
[0022] T low , when T sensor >T high When T l ow≤T sensor ≤T high When T sensor <T low When the cleaning is too intense, reduce the intensity of the cleaning or stop cleaning.
[0023] Preferably, the cleaning pressure and flow rate adjustment control logic is: set the reference pressure P of the compressed air b ase and baseline flow F b ase; According to the difference between temperature and threshold, calculate the adjustment coefficient K of pressure and flow:
[0024]
[0025] Calculate the adjusted pressure P a adjusted and flow F a adjusted:
[0026] P adjusted =P base ×(1+K)
[0027] F adjusted =F base ×(1+K)
[0028] The controller calculates the P adjusted and F adjusted , adjust the compressed air supply system to suit the current cleaning needs, when T sensor Down to T l When the pressure drops below 0.00, the controller reduces the pressure and flow to a safe level and eventually stops cleaning. The present invention provides an automatic cleaning system for dust on the surface of a cooler for an open-pit rock drill in a mine. It has the following beneficial effects:
[0029] This automatic cleaning system for dust on the surface of the cooler of an open-pit rock drill in a mine utilizes the high-pressure gas generated by the screw air compressor of the rock drill. The gas enters the gas tank for storage to form a stable compressed air source. The control unit module intelligently determines the cleaning demand based on the temperature data collected by the sensor module and issues a control instruction. Multiple large-flow two-way solenoid valves are precisely controlled by the control unit module to achieve instantaneous release of compressed air. The compressed air is transmitted through the pipeline and finally ejected through the nozzle in a specific shape and speed to achieve all-round and efficient cleaning of the cooler surface. The automated operation reduces the need for manual cleaning, reduces labor intensity and operational risks, and the intelligent control strategy ensures the timeliness and effectiveness of the cleaning process, avoids equipment failure caused by overheating. The efficient cleaning actuator design ensures the thorough removal of dust and debris on the cooler surface and restores cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] Figure 1 Schematic diagram of the module of the present invention;
[0031] Figure 2 Schematic diagram of the system structure of the present invention. DETAILED DESCRIPTION
[0032] The following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.
[0033] See also Figure 1-2 , an embodiment of the present invention provides a technical solution: an automatic cleaning system for dust on the surface of a cooler of an open-pit rock drill in a mine, comprising a user interface module, a sensor module, a control unit module, a compressed air supply module, an actuator module, and a timing and logic control module; the user interface module is integrated in the cab, and is equipped with an operation interface and a physical switch, so that the operator can manually activate the cleaning sequence or perform system settings; the sensor module integrates a temperature sensor array for performing continuous temperature monitoring tasks, and provides real-time feedback of the temperature data on the cooler surface, providing the necessary input signals for the controller; the control unit module is used to receive signals from the sensor module, and based on preset algorithms and thresholds, intelligently decide to start the cleaning process; the compressed air supply module comprises a screw machine, an air storage tank, and a pressure reducing valve, which are responsible for providing and regulating the compressed air required for cleaning, and together ensure a stable supply and precise regulation of the compressed air during the cleaning process; the actuator module comprises a solenoid valve and a nozzle, wherein the nozzles are evenly distributed on the surface of the cooler shell, such as Figure 2 As shown, the solenoid valve receives signals from the controller to control the release of compressed air, while the nozzle sprays the compressed air onto the cooler surface in a precise, high-speed flow, achieving efficient cleaning. The timing and logic control module automatically controls the start and stop of the cleaning process based on a preset system schedule or logically determined conditions, ensuring automated and intelligent cleaning operations. The cleaning system includes three cleaning modes: active, automatic, and intelligent.
[0034] The active mode system process is:
[0035] a. Initial assessment and safety check: Assess the dust accumulation on the cooler surface and ensure the rig is in a safe shutdown state in preparation for activating the cleaning system;
[0036] b. Manual activation of the cleaning system: After entering the cab, the operator manually presses the start button on the control panel to activate the cleaning system. The controller then instructs the solenoid valve to open.
[0037] c. Perform cleaning operations: Compressed air generated by the screw compressor in the compressed air supply module enters the air storage tank, is adjusted to the set pressure by the pressure reducing valve, and then sprayed out from the nozzle to efficiently clean the cooler surface. The operator monitors the cleaning effect in real time through the monitoring system and adjusts the pressure reducing valve through the control panel to change the cleaning intensity as needed.
[0038] d. Cleaning completion and system reset: After the dust is removed, the operator presses the stop button to close the solenoid valve and end the cleaning process; then the system is reset.
[0039] The automatic mode system process is:
[0040] a. Preset cleaning schedule: The system automatically schedules cleaning tasks based on a preset schedule or periodic working mode through the built-in task scheduler. The operator or maintenance team can set the cycle frequency and specific execution time of the cleaning operation through the user interface module based on the actual use of the equipment and environmental factors.
[0041] b. Automatically trigger cleaning: When the system reaches the preset cleaning time point, the control unit module automatically responds to the time signal without manual operation, automatically triggering the opening of the two-way solenoid valve, thereby starting the compressed air supply and entering the cleaning process;
[0042] c. Perform standardized cleaning: Compressed air is blown through the nozzle to perform standardized cleaning operations on the cooler surface according to preset pressure and flow parameters. The system design ensures that each cleaning can achieve the expected cleaning effect and meet standardized cleaning requirements. d. End of cleaning and system self-test: After the cleaning task is completed, the control unit module automatically closes the two-way solenoid valve, terminating the supply of compressed air. The system then enters a self-test program to check whether all components have been reset to their initial state and prepare for the next cleaning task.
[0043] The intelligent mode system process is as follows:
[0044] a. Real-time temperature monitoring: The system monitors the surface temperature of the cooler in real time through the temperature sensor installed on the cooler to ensure timely response to temperature changes;
[0045] b. Automatically trigger cleaning mechanism: When the temperature sensor detects that the surface temperature of the cooler exceeds the preset safety range, the controller automatically triggers the cleaning program to reduce the temperature and prevent the equipment from overheating;
[0046] c. Intelligent cleaning operation: The controller intelligently adjusts the pressure and flow of compressed air based on real-time temperature data through a closed-loop feedback control system, and accurately blows the cooler surface through the nozzle to effectively remove dust and impurities;
[0047] d. Continuous monitoring and temperature regulation: During the cleaning process, the system continuously monitors the temperature and dynamically adjusts the cleaning intensity based on real-time feedback from the cooler temperature to ensure that the cooler temperature returns to a safe operating range.
[0048] e. End of cleaning and system reset: When the cooler temperature drops below the preset safety threshold, the controller automatically closes the solenoid valve, ending the cleaning process. The system then performs a self-check to ensure all components are reset and records the cleaning event, including start conditions, cleaning duration, and temperature changes, providing detailed data for subsequent equipment maintenance and performance analysis.
[0049] The cleaning trigger logic of the automatic cleaning mechanism is as follows: the temperature sensor collects the temperature data of the cooler surface in real time, and sets the cooler's safe temperature threshold T according to the equipment manufacturer's recommendations and historical operating data. max The controller receives temperature data in real time and compares it with the preset safety threshold. When the monitored temperature T sensor More than T max When the temperature drops below the safety threshold, the cleaning process will stop automatically.
[0050] The system cleaning duration is calculated as:
[0051]
[0052] Among them, the temperature at the beginning of cleaning is T start , the safety temperature threshold is T max , the cleaning efficiency is E, where E is the amount of temperature drop per unit time, then the cleaning duration t clean .
[0053] The cleaning demand evaluation logic in the dynamic adjustment of cleaning intensity according to the temperature drop is as follows: the temperature data T of the cooler surface is collected in real time by the temperature sensor. sensor , set the high temperature threshold T high and low temperature threshold T low , where T high >T low , when T sensor >T high When T l ow≤T sensor ≤T high When T sensor <T low When the cleaning is too intense, reduce the intensity of the cleaning or stop cleaning.
[0054] The control logic of cleaning pressure and flow regulation is: set the reference pressure P of compressed air b ase and baseline flow F b ase; According to the difference between temperature and threshold, calculate the adjustment coefficient K of pressure and flow:
[0055]
[0056] Calculate the adjusted pressure P a adjusted and flow F a adjusted:
[0057] P adjusted =P base ×(1+K)
[0058] F adjusted =F base ×(1+K)
[0059] The controller calculates the P adjusted and F adjusted , adjust the compressed air supply system to suit the current cleaning needs, when T sensor Down to T l When the pressure drops below 0.00, the controller reduces the pressure and flow to safe levels and eventually stops cleaning. In summary, this invention takes into account the particularities of open-pit mining environments and is adaptable to various adverse weather conditions and complex operating conditions. This automatic cleaning system makes maintenance of open-pit rock drill rigs in mines more efficient and intelligent, significantly improving equipment reliability and operating efficiency while also reducing maintenance costs and potential downtime risks.
[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from all points of view, the embodiments should be regarded as illustrative and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.
[0061] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.
Claims
1. Automatic cleaning system for dust on the surface of cooler of open-pit rock drill in mines, characterized by: It includes a user interface module, a sensor module, a control unit module, a compressed air supply module, an actuator module, and a timing and logic control module; The user interface module is integrated into the cab and is equipped with an operating interface and physical switches, enabling the operator to manually activate the cleaning sequence or make system settings; The sensor module integrates a temperature sensor array to perform continuous temperature monitoring tasks, provide real-time feedback of the temperature data on the cooler surface, and provide the necessary input signals for the controller; The control unit module is used to receive signals from the sensor module and make intelligent decisions on starting the cleaning process based on preset algorithms and thresholds; The compressed air supply module includes a screw compressor, an air storage tank and a pressure reducing valve, which are responsible for providing and regulating the compressed air required for cleaning, and together ensure the stable supply and precise regulation of compressed air during the cleaning process; The actuator module includes a solenoid valve and a nozzle, wherein the nozzles are evenly distributed on the surface of the cooler housing. The solenoid valve receives a signal from the controller to control the release of compressed air, and the nozzle is responsible for spraying the compressed air onto the cooler surface in the form of a precise high-speed airflow to achieve efficient cleaning. The timing and logic control module is used to automatically control the start and stop of the cleaning process according to the system's preset schedule or based on logical judgment conditions, ensuring the automation and intelligence of the cleaning operation; the cleaning system includes three cleaning modes, including active mode, automatic mode, and intelligent mode; The intelligent mode system process is as follows: a. Real-time temperature monitoring: The system monitors the surface temperature of the cooler in real time through the temperature sensor installed on the cooler to ensure timely response to temperature changes; b. Automatically trigger cleaning mechanism: When the temperature sensor detects that the surface temperature of the cooler exceeds the preset safety range, the controller automatically triggers the cleaning program to reduce the temperature and prevent the equipment from overheating; c. Intelligent cleaning operation: The controller intelligently adjusts the pressure and flow of compressed air based on real-time temperature data through a closed-loop feedback control system, and accurately blows the cooler surface through the nozzle to effectively remove dust and impurities; d. Continuous monitoring and temperature regulation: During the cleaning process, the system continuously monitors the temperature and dynamically adjusts the cleaning intensity based on real-time feedback from the cooler temperature to ensure that the cooler temperature returns to a safe operating range. e. End of cleaning and system reset: When the cooler temperature drops below the preset safety threshold, the controller automatically closes the solenoid valve, ending the cleaning process. The system then performs a self-check to ensure all components are reset and records the cleaning event, including start conditions, cleaning duration, and temperature changes, providing detailed data for subsequent equipment maintenance and performance analysis.
2. The automatic cleaning system for dust on the surface of a cooler of an open-pit rock drill in a mine according to claim 1, characterized in that: The active mode system process is as follows: a. Initial assessment and safety check: Assess the dust accumulation on the cooler surface and ensure the rig is in a safe shutdown state in preparation for activating the cleaning system; b. Manual activation of the cleaning system: After entering the cab, the operator manually presses the start button on the control panel to activate the cleaning system. The controller then instructs the solenoid valve to open. c. Perform cleaning operations: Compressed air generated by the screw compressor in the compressed air supply module enters the air storage tank, is adjusted to the set pressure by the pressure reducing valve, and then sprayed out from the nozzle to efficiently clean the cooler surface. The operator monitors the cleaning effect in real time through the monitoring system and adjusts the pressure reducing valve through the control panel to change the cleaning intensity as needed. d. Cleaning completion and system reset: After the dust is removed, the operator presses the stop button to close the solenoid valve and end the cleaning process; then the system is reset.
3. The automatic cleaning system for dust on the surface of a cooler of a mine open-pit rock drill according to claim 2, characterized in that: The automatic mode system process is as follows: a. Preset cleaning schedule: The system automatically schedules cleaning tasks based on a preset schedule or periodic working mode through the built-in task scheduler. The operator or maintenance team can set the cycle frequency and specific execution time of the cleaning operation through the user interface module based on the actual use of the equipment and environmental factors. b. Automatically trigger cleaning: When the system reaches the preset cleaning time point, the control unit module automatically responds to the time signal without manual operation, automatically triggering the opening of the two-way solenoid valve, thereby starting the compressed air supply and entering the cleaning process; c. Perform standardized cleaning: Compressed air is blown through the nozzle to perform standardized cleaning operations on the cooler surface according to the preset pressure and flow parameters. The system design ensures that each cleaning can achieve the expected cleaning effect and meet the standardized cleaning requirements; d. End of cleaning and system self-test: After the cleaning task is completed, the control unit module automatically closes the two-way solenoid valve and terminates the supply of compressed air; the system then enters a self-test program to check whether all components have been reset to their initial state and prepare for the next cleaning task.
4. The automatic cleaning system for dust on the surface of a cooler of a mine open-pit rock drill according to claim 3, characterized in that: The cleaning trigger logic of the automatic trigger cleaning mechanism is as follows: the temperature sensor collects the temperature data of the cooler surface in real time, and sets the cooler's safe temperature threshold T according to the equipment manufacturer's recommendations and historical operating data. max The controller receives temperature data in real time and compares it with the preset safety threshold. When the monitored temperature T sensor More than T max When the temperature drops below the safety threshold, the cleaning process will stop automatically.
5. The automatic cleaning system for dust on the surface of a cooler of a mine open-pit rock drill according to claim 4, characterized in that: The system cleaning duration is calculated as: Among them, the temperature at the beginning of cleaning is T start , the safety temperature threshold is T max , the cleaning efficiency is E, where E is the amount of temperature drop per unit time, then the cleaning duration t clean .
6. The automatic cleaning system for dust on the surface of a cooler of a mine open-pit rock drill according to claim 5, characterized in that: The cleaning demand evaluation logic in the dynamic adjustment of cleaning intensity according to the temperature drop is as follows: the temperature data T of the cooler surface is collected in real time by the temperature sensor. sensor , set the high temperature threshold T high and low temperature threshold T low , where T high >T low , when T sensor >T high When T l ow≤T sensor ≤T high When T sensor <T low When the cleaning is too intense, reduce the intensity of the cleaning or stop cleaning.
7. The automatic cleaning system for dust on the surface of a cooler of a mine open-pit rock drill according to claim 6, characterized in that: The control logic of cleaning pressure and flow regulation is: set the reference pressure P of compressed air b ase and baseline flow F b ase; According to the difference between temperature and threshold, calculate the adjustment coefficient K of pressure and flow: Calculate the adjusted pressure P a adjusted and flow F a adjusted: P adjusted =P base ×(1+K) F adjusted =F base ×(1+K) The controller calculates the P adjusted and F adjusted , adjust the compressed air supply system to suit the current cleaning needs, when T sensor Down to T l When the pressure drops to 0.00 or below, the controller reduces the pressure and flow to safe levels and eventually stops cleaning.
Citation Information
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