Centralized medical respiratory system and control method

Abstract

The invention relates to the technical field of respiratory therapy, and provides a centralized medical respiratory system and a control method.The respiratory system comprises an oxygen supply source, an air supply source, a vacuum supply source and one or more respirators with respiratory interfaces; the respirator comprises an air-oxygen mixer, a humidifier and a controller, an inlet of the air-oxygen mixer is connected with an oxygen supply source and an air supply source, and an outlet of the air-oxygen mixer is connected with an inlet of the humidifier. An outlet of the humidifier is connected with the vacuum supply source, a first electromagnetic valve and a first electric control valve are sequentially arranged on a pipeline between the humidifier and the vacuum supply source in the airflow direction, and the breathing connector is connected with the pipeline between the first electromagnetic valve and the first electric control valve through a breathing pipeline. By means of centralized supply and centralized treatment, high-quality oxygen and medical air can be provided, carbon dioxide exhaled by a patient can be treated and discharged in a centralized mode, and the risk of cross infection in a hospital can be effectively controlled for the patient with the risk of air infection.

Description

Technical Field

[0001] The present invention relates to the technical field of respiratory therapy, and more particularly, to a centralized medical respiratory system and a control method therefor. Background Art

[0002] At present, the respiratory system is mainly a ventilator, and existing ventilator products are all single-unit medical devices that provide breathing gas for patients through a self-provided gas source supply method. The gas exhaled by patients is directly discharged into the air only after simple treatment, posing a relatively high risk of cross-infection. For critically ill patients without the ability of spontaneous breathing, an expiratory pressure control device often needs to be added, which not only has a complex structure and high maintenance cost, but also is prone to germ residue and difficult to handle. Summary of the Invention

[0003] The purpose of the present invention is to provide a centralized medical respiratory system and a control method therefor to solve the above-mentioned defects of the prior art.

[0004] The present invention is achieved through the following technical solutions:

[0005] A centralized medical respiratory system includes one or more respirators, an oxygen supply source for providing oxygen, an air supply source for providing air, and a vacuum supply source for providing negative pressure power; the respirator has a breathing interface for connecting a breathing assistance tool, and the respirator includes an air-oxygen mixer, a humidifier, and a controller for controlling the working states of each component. The inlets of the air-oxygen mixer are respectively connected to the oxygen supply source and the air supply source, the outlet of the air-oxygen mixer is connected to the inlet of the humidifier, the outlet of the humidifier is connected to the vacuum supply source, and a first solenoid valve and a first electric control valve are sequentially arranged on the pipeline between the two along the air flow direction. The breathing interface is connected to the pipeline between the first solenoid valve and the first electric control valve through a breathing pipeline.

[0006] Further, a first proportional valve is arranged on the pipeline between the air-oxygen mixer and the air supply source; a second proportional valve is arranged on the pipeline between the air-oxygen mixer and the oxygen supply source.

[0007] Further, the respirator also has an oxygen inhalation interface for connecting an oxygen inhalation assistance tool, and the oxygen inhalation interface is connected to the pipeline between the humidifier and the first solenoid valve through an oxygen inhalation pipeline, and a second solenoid valve is arranged on the oxygen inhalation pipeline.

[0008] Further, the respirator also has an aspiration interface for connecting an aspiration tool, and the aspiration interface is connected to the pipeline between the first electric control valve and the vacuum supply source through an aspiration pipeline, and a second electric control valve is arranged on the aspiration pipeline.

[0009] Further, the respirator further has an atomization interface for connecting an atomizer. The atomization interface is connected to the pipeline between the air supply source and the first proportional valve through an atomization pipeline, and a third solenoid valve is provided on the atomization pipeline.

[0010] Optionally, a first pressure sensor is provided at the front end of the first electric control valve; a second pressure sensor is provided at the front end of the second electric control valve.

[0011] Optionally, a first oxygen concentration sensor, a flow meter and a third pressure sensor are sequentially provided on the pipeline between the air-oxygen mixer and the humidifier along the air flow direction.

[0012] Optionally, a temperature sensor is provided at the outlet of the humidifier.

[0013] Optionally, each component in the respirator is arranged in a box body, and a second oxygen concentration sensor and an exhaust fan are provided in the box body.

[0014] The present invention also provides a control method for a centralized medical respiratory system, which is applied to the above-mentioned centralized medical respiratory system and includes four control modes, namely an atomization mode, an oxygen inhalation mode, a breathing mode and a suction mode;

[0015] Atomization mode: The controller controls the third solenoid valve to open, and the medical air supplied by the air supply source enters the atomizer. The high-speed airflow generated by the liquid medicine in the atomizer is atomized and then used by the patient.

[0016] Oxygen inhalation mode: The controller controls the first proportional valve and the second proportional valve to work, and oxygen and medical air are input according to the target oxygen concentration and flow rate. The oxygen and medical air enter the air-oxygen mixer for mixing, and the mixed gas enters the humidifier for humidification and heating, and then enters the oxygen inhalation auxiliary tool through the second solenoid valve, and then enters the patient's lungs.

[0017] Breathing mode: The cycle of the patient's inhalation and exhalation is carried out according to a preset breathing frequency or is switched according to the patient's spontaneous breathing frequency; during inhalation, the controller controls the first proportional valve and the second proportional valve to work, and oxygen and medical air are input according to the target oxygen concentration and flow rate. The oxygen and medical air enter the air-oxygen mixer for mixing, and the mixed gas enters the humidifier for humidification and heating, and then enters the breathing auxiliary tool through the first solenoid valve, and then enters the patient's lungs; during exhalation, the first proportional valve, the second proportional valve and the first solenoid valve are closed, and the first electric control valve is opened. The vacuum supply source adjusts the exhalation pressure to the target value, and the carbon dioxide in the patient's lungs is transported to the vacuum supply source through the first electric control valve for centralized treatment and discharge.

[0018] Suction mode: The controller controls the second electric control valve to open, the vacuum supply source adjusts the suction pressure to the target value, and a negative pressure suction operation is carried out through a suction tool.

[0019] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0020] 1. In the present invention, by adopting the method of centralized supply and centralized treatment, it can not only provide high-quality oxygen and medical air for patients, but also centrally treat and discharge the carbon dioxide exhaled by patients through a vacuum supply source. For patients at risk of air-borne infection, the risk of hospital cross-infection can be effectively controlled.

[0021] 2. In the present invention, on the basis of having a breathing interface, an oxygen inhalation interface, a suction interface and a negative pressure interface, it includes four functions of oxygen inhalation, atomization, breathing and suction to meet the needs of various patients, and can replace the combination of multiple existing products such as medical gas terminals, buoyant oxygen inhalers, ventilators, negative pressure regulators, etc. It has complete functions and is convenient to use, which can greatly reduce the labor intensity of medical staff. At the same time, this respiratory system can meet the "dual use of peacetime and emergency" usage requirements. Among them, the oxygen inhalation, atomization and suction functions can meet the routine treatment needs of patients; in special periods when respiratory diseases occur frequently, the breathing function can provide ventilation assistance and respiratory support for patients to meet the treatment needs of patients with respiratory diseases.

[0022] 3. In the present invention, the first proportional valve and the second proportional valve are provided to realize the adjustment of the oxygen inhalation concentration. The concentration of inhaled oxygen can be adjusted according to the hypoxia condition of the patient, which can avoid oxygen poisoning caused by too high inhaled oxygen concentration; at the same time, the humidifier provided can humidify and heat the gas, and heat the humidified gas to a suitable temperature for the patient to improve the comfort of the patient's treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a structural schematic diagram of a centralized medical respiratory system provided by the present invention;

[0024] Figure 2 is a structural schematic diagram of a respirator;

[0025] Figure 3 is a schematic diagram of the control principle of the atomization mode;

[0026] Figure 4 is a schematic diagram of the control principle of the oxygen inhalation mode;

[0027] Figure 5 is a schematic diagram of the control principle of the breathing mode;

[0028] Figure 6 is a schematic diagram of the control principle of the suction mode;

[0029] Reference numerals: 1 - oxygen supply source, 2 - air supply source, 3 - vacuum supply source, 4 - gas pipeline system, 5 - respirator, 501 - first proportional valve, 502 - second proportional valve, 503 - second oxygen concentration sensor, 504 - display screen, 505 - exhaust fan, 506 - air-oxygen mixer, 507 - first oxygen concentration sensor, 508 - controller, 509 - flow meter, 510 - third pressure sensor, 511 - temperature sensor, 512 - humidifier, 513 - third solenoid valve, 514 - second solenoid valve, 515 - first solenoid valve, 516 - second pressure sensor, 517 - first pressure sensor, 518 - second electric control valve, 519 - first electric control valve, 520 - box body, 5a - atomization interface, 5b - oxygen inhalation interface, 5c - breathing interface, 5d - suction interface. Detailed implementation manners

[0030] Reference Figure 1 and Figure 2 , a centralized medical respiratory system, including multiple respirators 5 (in some embodiments, of course, it can also be one respirator 5), an oxygen supply source 1 for providing oxygen to the respirator 5, an air supply source 2 for providing air, and a vacuum supply source 3 for providing negative pressure power. It is easy to understand that the oxygen supply source 1, the air supply source 2, and the vacuum supply source 3 are connected to the respirator 5 through the gas pipeline system 4.

[0031] It is easy to understand that the oxygen supply source 1 provides oxygen or oxygen-rich air for the respiratory system, which can be a medical liquid oxygen storage tank, gas cylinder, gas cylinder group, high-pressure gas storage tank, or oxygen concentrator device, etc.; the air supply source 2 provides medical air for the respiratory system, which can be a gas cylinder, gas cylinder group, high-pressure gas storage tank, air compressor (group), or air proportioning device, etc.; the vacuum supply source 3 provides negative pressure power for the respiratory system, and is usually composed of a vacuum pump, vacuum tank, bacteria filter, dirt collection tank, and exhaust sterilization device.

[0032] The respirator 5 has a breathing interface 5c for connecting breathing assistance tools (such as breathing masks, etc.). The respirator 5 includes an air-oxygen mixer 506, a humidifier 512, and a controller 508. In practical applications, the humidifier 512 is selected to have a heating function, which can humidify and heat the gas, heat the humidified gas to a suitable temperature for the patient, and improve the comfort of the patient's treatment.

[0033] The inlet of the air-oxygen mixer 506 is respectively connected to the oxygen supply source 1 and the air supply source 2. As an option, in this embodiment, a first proportional valve 501 is provided on the pipeline between the air-oxygen mixer 506 and the air supply source 2; a second proportional valve 502 is provided on the pipeline between the air-oxygen mixer 506 and the oxygen supply source 1. By setting the first proportional valve 501 and the second proportional valve 502, the oxygen inhalation concentration can be adjusted, and the concentration of inhaled oxygen can be adjusted according to the hypoxia condition of the patient, which can avoid oxygen poisoning caused by too high inhaled oxygen concentration. The outlet of the air-oxygen mixer 506 is connected to the inlet of the humidifier 512. The outlet of the humidifier 512 is connected to the vacuum supply source 3, and a first solenoid valve 515 and a first electric control valve 519 are successively arranged on the pipeline between them along the air flow direction. The breathing interface 5c is connected to the pipeline between the first solenoid valve 515 and the first electric control valve 519 through a breathing pipeline. It can be seen that the present invention adopts the method of centralized supply and centralized treatment, which can not only provide high-quality oxygen and medical air for patients, but also centrally treat and discharge the carbon dioxide exhaled by patients through the vacuum supply source 3. For patients at risk of air infection, the risk of hospital cross-infection can be effectively controlled.

[0034] On the above basis, the respirator 5 also has an oxygen inhalation interface 5b for connecting oxygen inhalation auxiliary tools (such as nasal oxygen tubes, oxygen masks, etc.), a suction interface 5d for connecting suction tools (usually a combination of a suction bottle and a suction catheter), and an atomization interface 5a for connecting an atomizer; the oxygen inhalation interface 5b is connected to the pipeline between the humidifier 512 and the first solenoid valve 515 through an oxygen inhalation pipeline, and a second solenoid valve 514 is provided on the oxygen inhalation pipeline; the suction interface 5d is connected to the pipeline between the first electric control valve 519 and the vacuum supply source 3 through a suction pipeline, and a second electric control valve 518 is provided on the suction pipeline; the atomization interface 5a is connected to the pipeline between the air supply source 2 and the first proportional valve 501 through an atomization pipeline, and a third solenoid valve 513 is provided on the atomization pipeline.

[0035] It should be understood that the air supply source 2, the third solenoid valve 513 and the atomization interface 5a together form a pipeline for realizing atomization treatment. The air supply source 2, the oxygen supply source 1, the air-oxygen mixer 506, the humidifier 512, the second solenoid valve 514 and the oxygen inhalation interface 5b together form a pipeline for realizing oxygen inhalation treatment. The air supply source 2, the oxygen supply source 1, the air-oxygen mixer 506, the humidifier 512, the first solenoid valve 515 and the breathing interface 5c together form a pipeline for inhalation; at the same time, the breathing interface 5c, the first electric control valve 519 and the vacuum supply source 3 together form a pipeline for exhalation; the pipeline for inhalation and the pipeline for exhalation together constitute a pipeline for realizing respiratory treatment. The suction interface 5d, the second electric control valve 518 and the vacuum supply source 3 together form a pipeline for realizing suction treatment.

[0036] It can be seen that the respiratory system includes four functions to respond to various patients' needs for oxygen inhalation, atomization, respiration, and suction. It can replace the combination of multiple existing medical gas terminals, buoy-type oxygen inhalers, ventilators, negative pressure regulators, etc. It has complete functions and is convenient to use, which can greatly reduce the labor intensity of medical staff. At the same time, the respiratory system can meet the "dual-use in normal and emergency" usage requirements. Among them, the functions of oxygen inhalation, atomization, and suction can meet the routine treatment needs of patients; in special periods when respiratory diseases occur frequently, the respiration function can provide ventilation assistance and respiratory support for patients to meet the treatment needs of patients with respiratory diseases.

[0037] In addition, in practical applications, according to different usage scenarios, the respiratory instrument 5 system can be a ward bedside supply device, an ICU suspension tower, a suspension bridge, a suspension column, etc. According to different structural forms, it can be wall-mounted, embedded, suspended, etc. The quantity is set according to the usage requirements. The product appearance can be integrated into the decoration and design of the hospital ward or operating room. It is overall simple and beautiful. When in use, there is no need to move it around, which reduces the work intensity of medical staff. According to the usage needs of patients, connect the corresponding accessories to the corresponding interfaces and set the pipeline parameters to use, which is convenient and fast.

[0038] As an option, in this embodiment, a first pressure sensor 517 is provided at the front end of the first electric control valve 519, which is convenient for adjusting the exhalation pressure according to the detection value of the first pressure sensor 517. A second pressure sensor 516 is provided at the front end of the second electric control valve 518. Similarly, it is convenient for adjusting the suction pressure according to the detection value of the second pressure sensor 516.

[0039] As an option, in this embodiment, along the gas flow direction on the pipeline between the air-oxygen mixer 506 and the humidifier 512, a first oxygen concentration sensor 507, a flow meter 509, and a third pressure sensor 510 are sequentially provided, which is convenient for detecting the gas concentration, flow rate, and pressure after being mixed by the air-oxygen mixer 506.

[0040] As an option, in this embodiment, a temperature sensor 511 is provided at the outlet of the humidifier 512, which is convenient for detecting the gas temperature after being heated by the humidifier 512.

[0041] As an option, in this embodiment, each component in the respiratory instrument 5 (that is, the controller 508, the air-oxygen mixer 506, the humidifier 512, each valve, and each sensor, etc.) is arranged in the box body 520. A second oxygen concentration sensor 503 and an exhaust fan 505 are provided in the box body 520. When the oxygen concentration in the box body 520 exceeds the set value, the exhaust fan 505 starts to discharge the gas in the box until the oxygen concentration in the box body 520 returns to normal and the exhaust fan 505 stops running.

[0042] In addition, in practical applications, a display screen 504 can also be provided on the outer surface of the box body 520, preferably a touch display screen 504, which is used to display working parameters and input control commands. It is easy to understand that the controller 508 should be electrically connected to other components in the respirator 5, that is, its working state is controlled by the controller 508, and each supply source can also be automatically controlled through the controller 508. How to achieve automatic control of each component through the controller 508, display parameters through the touch display screen 504, and set corresponding control commands can be achieved by those skilled in the art according to the prior art and common general knowledge in this field, so it will not be elaborated here.

[0043] The present invention also provides a control method for a centralized medical respiratory system, which is applied to the above-mentioned centralized medical respiratory system and includes four control modes, namely, an atomization mode, an oxygen inhalation mode, a breathing mode, and a suction mode. In the accompanying drawings, the atomization mode is represented by A, the oxygen inhalation mode is represented by B, the breathing mode is represented by C, and the suction mode is represented by D.

[0044] Reference Figure 3 , Atomization mode: The controller 508 controls the third solenoid valve 513 to open, and the medical air supplied by the air supply source 2 enters the atomizer. The high-speed airflow generated by the liquid medicine in the atomizer is atomized and then used by the patient. On the basis of the touch display screen 504 being provided, in actual use, by the medical staff with the operation permission, select the atomization mode on the display screen 504 and set the atomization duration, then wear the mask (or mouthpiece) of the atomizer connected to the atomization interface 5a for the patient, click the start button, and after reaching the set atomization duration, the controller 508 controls the third solenoid valve 513 to cut off the power supply and close, and the atomization ends.

[0045] Reference Figure 4 , Oxygen inhalation mode: The controller 508 controls the first proportional valve 501 and the second proportional valve 502 to work, and inputs oxygen and medical air according to the target oxygen concentration and flow rate. The oxygen and medical air enter the air-oxygen mixer 506 for mixing, and the mixed gas enters the humidifier 512 for humidification and heating, and then enters the oxygen inhalation auxiliary tool through the second solenoid valve 514, and then enters the patient's lungs. On the basis of the touch display screen 504 being provided, in actual use, by the medical staff with the operation permission, select the oxygen inhalation mode on the display screen 504, and set parameters such as the oxygen inhalation duration, flow rate, and oxygen concentration according to the patient's condition, then wear the oxygen inhalation auxiliary tool connected to the oxygen inhalation interface 5b for the patient, click the start button, and after reaching the oxygen inhalation duration, the controller 508 controls the first proportional valve 501 and the second proportional valve 502 to close.

[0046] Reference Figure 5, Respiration mode: During inhalation, the controller 508 controls the operation of the first proportional valve 501 and the second proportional valve 502 to input oxygen and medical air according to the target oxygen concentration and flow rate. The oxygen and medical air enter the air-oxygen mixer 506 for mixing. After being humidified and heated in the humidifier 512, the mixed gas enters the respiratory assist tool through the first solenoid valve 515 and then enters the patient's lungs. During exhalation, the first proportional valve 501, the second proportional valve 502, and the first solenoid valve 515 are closed, and the first electric regulating valve 519 is opened. The exhalation pressure is adjusted to the target value through the vacuum supply source 3. The carbon dioxide in the patient's lungs is transported to the vacuum supply source 3 through the first electric regulating valve 519 for centralized treatment and discharge. Based on the touch display screen 504, in actual use, medical staff with operating authority select the respiration mode on the display screen 504, set parameters such as oxygen concentration, the flow rate of the mixed air-oxygen gas, the temperature of the humidified gas, and the respiratory rate according to the patient's condition, then wear the respiratory assist tool connected to the respiratory interface 5c for the patient and click the start button. For patients without the ability of spontaneous respiration, the inhalation and exhalation cycles are carried out according to the preset respiratory rate. For patients with partial spontaneous respiration ability, it can also be switched according to the patient's spontaneous respiratory rate.

[0047] Reference Figure 6 , Suction mode: The controller 508 controls the second electric regulating valve 518 to open, adjusts the suction pressure to the target value through the vacuum supply source 3, and performs negative pressure suction operation through the suction tool. Based on the touch display screen 504, in actual use, medical staff with operating authority select the suction mode on the display screen 504, place the suction tool connected to the suction interface 5d at the required suction site, click the start button, observe the pressure value at this time, and adjust the pressure of the vacuum supply source 3 to the required value. After use, close the second electric regulating valve 518 to end the suction.

[0048] It is easy to understand that, as described above, the treatment functions corresponding to different modes are composed of different pipelines. Therefore, when one function is enabled, the pipelines corresponding to other functions should be in a non-operating state.

[0049] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A centralized medical respiratory system, characterized in that, It includes one or more respirators, an oxygen supply source for supplying oxygen to them, an air supply source for supplying air, and a vacuum supply source for providing negative pressure power; the respirator has a breathing interface for connecting breathing assistance tools, and the respirator includes an air-oxygen mixer, a humidifier, and a controller for controlling the working states of various components. The inlets of the air-oxygen mixer are respectively connected to the oxygen supply source and the air supply source, the outlet of the air-oxygen mixer is connected to the inlet of the humidifier, the outlet of the humidifier is connected to the vacuum supply source, and a first solenoid valve and a first electric control valve are successively arranged on the pipeline between them along the air flow direction. The breathing interface is connected to the pipeline between the first solenoid valve and the first electric control valve through a breathing pipeline.

2. The centralized medical respiratory system according to claim 1, characterized in that, A first proportional valve is arranged on the pipeline between the air-oxygen mixer and the air supply source; a second proportional valve is arranged on the pipeline between the air-oxygen mixer and the oxygen supply source.

3. The centralized medical respiratory system according to claim 2, characterized in that, The respirator also has an oxygen inhalation interface for connecting oxygen inhalation assistance tools. The oxygen inhalation interface is connected to the pipeline between the humidifier and the first solenoid valve through an oxygen inhalation pipeline, and a second solenoid valve is arranged on the oxygen inhalation pipeline.

4. The centralized medical respiratory system according to claim 3, characterized in that, The respirator also has a suction interface for connecting suction tools. The suction interface is connected to the pipeline between the first electric control valve and the vacuum supply source through a suction pipeline, and a second electric control valve is arranged on the suction pipeline.

5. The centralized medical respiratory system according to claim 4, wherein, The respirator also has an atomization interface for connecting atomizers. The atomization interface is connected to the pipeline between the air supply source and the first proportional valve through an atomization pipeline, and a third solenoid valve is arranged on the atomization pipeline.

6. The centralized medical respiratory system according to claim 4, wherein A first pressure sensor is arranged at the front end of the first electric control valve; a second pressure sensor is arranged at the front end of the second electric control valve.

7. The centralized medical respiratory system according to any one of claims 1-6, characterized in that, A first oxygen concentration sensor, a flow meter, and a third pressure sensor are successively arranged on the pipeline between the air-oxygen mixer and the humidifier along the air flow direction.

8. The centralized medical respiratory system according to any one of claims 1-6, characterized in that, A temperature sensor is arranged at the outlet of the humidifier.

9. The centralized medical respiratory system according to any one of claims 1-6, characterized in that All components in the respirator are arranged in a box body, and a second oxygen concentration sensor and an exhaust fan are arranged in the box body.

10. A control method for a centralized medical respiratory system, applied to the centralized medical respiratory system according to claim 5, characterized in that, It includes four control modes, namely atomization mode, oxygen inhalation mode, breathing mode, and suction mode; Atomization mode: The controller controls the third solenoid valve to open, the medical air supplied by the air supply source enters the atomizer, and the high-speed air flow generated by the liquid medicine in the atomizer is atomized for the patient to use; Oxygen inhalation mode: The controller controls the first proportional valve and the second proportional valve to work, oxygen and medical air are input according to the target oxygen concentration and flow rate, the oxygen and medical air enter the air-oxygen mixer for mixing, the mixed gas enters the humidifier for humidification and heating, then enters the oxygen inhalation assistance tool through the second solenoid valve, and then enters the patient's lungs; Respiratory mode: The cycle of the patient's inhalation and exhalation is carried out according to a pre-set respiratory frequency or switches following the patient's spontaneous breathing frequency; during inhalation, the controller controls the operation of the first proportional valve and the second proportional valve, and oxygen and medical air are input according to the target oxygen concentration and flow rate. The oxygen and medical air enter the air-oxygen mixer for mixing, and the mixed gas enters the humidifier for humidification and heating, and then enters the respiratory assistance tool through the first solenoid valve and then enters the patient's lungs; during exhalation, the first proportional valve, the second proportional valve and the first solenoid valve are closed, and the first electric regulating valve is opened. The exhalation pressure is adjusted to the target value through the vacuum supply source, and the carbon dioxide in the patient's lungs is transported to the vacuum supply source through the first electric regulating valve for centralized treatment and discharge; Suction mode: The controller controls the second electric regulating valve to open, adjusts the suction pressure to the target value through the vacuum supply source, and performs negative pressure suction operation through the suction tool.

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