Anesthetic waste gas treatment device

Abstract

The invention relates to the technical field of waste gas treatment, in particular to an anesthetic waste gas treatment device which comprises a waste gas pipe communicated with an anesthesia machine exhaust port, the waste gas pipe is communicated with a treatment barrel, a pressure release valve is arranged at the communication position of the waste gas pipe and the treatment barrel, and a primary cavity, an intermediate cavity and a deep cavity are sequentially formed in the treatment barrel from inside to outside in the axial direction of the treatment barrel. The primary cavity is of a cylindrical structure, the intermediate cavity and the depth cavity are of an annular column structure, through openings are formed in one side of the top of the intermediate cavity and one side of the top of the depth cavity, the through openings in the intermediate cavity and the depth cavity are of a staggered structure, and check valves are arranged in the through openings and on the upper portion of the primary cavity; the bottom of a diaphragm of the pressure release valve is fixedly connected with a connecting rod, and the bottom end of the connecting rod is provided with a control assembly used for controlling opening and closing of through openings in the middle cavity and the depth cavity. Opening and closing of all the cavities are triggered according to the waste gas flow change in the waste gas pipe, and the situation that pumping and discharging are not timely when the waste gas flow is large is avoided.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and specifically to an anesthetic waste gas treatment device. Background Technology

[0002] During inhalation general anesthesia, open or semi-open anesthesia methods are usually used. In order to provide the patient with enough fresh gas during the anesthesia process, an anesthesia machine is usually used to continuously deliver gas into the breathing circuit. When the pressure in the circuit exceeds the set value, or the capacity exceeds the circuit volume, the excess gas must be discharged. When the excess anesthetic gas that has not been absorbed by the body is discharged along with the fresh air, it will carry some anesthetic gas with it, producing anesthetic waste gas. Long-term inhalation of anesthetic waste gas may have many health effects, especially for staff in medical places such as operating rooms. If they are exposed to low concentrations of anesthetic waste gas for a long time, they may experience symptoms such as headache, fatigue, nausea, and difficulty concentrating. The nervous system function may be affected. Studies have shown that long-term exposure may cause potential damage to liver and kidney function and is associated with reproductive health problems (such as an increased risk of miscarriage or abnormal development in offspring). Currently, Shenzhen Torricelli negative pressure exhaust and disinfection equipment is usually used. It uses a negative pressure system composed of a vortex air ring vacuum pump, pressure relief valve, and check valve to extract the anesthetic waste gas in the operating room and discharge it after simple filtration, or directly discharge it outside the building. However, in actual use, the negative pressure source of the Shenzhen Torricelli negative pressure exhaust and sterilization equipment is singular, resulting in a fixed flow rate of exhaust gas. When the amount of exhaust gas fluctuates during surgery (such as changes in the patient's breathing rhythm), it is easy for the exhaust to be delayed, causing the concentration of anesthetic exhaust gas in the pipeline to accumulate and increase rapidly. This results in the exhaust gas not being able to be discharged smoothly, causing the patient to inhale too much anesthetic, increasing the surgical risk, and may even cause the pipeline to rupture, allowing the anesthetic exhaust gas to directly diffuse into the operating room, which may cause headaches, fatigue, lack of concentration, or even impaired judgment of medical staff.

[0003] Therefore, the present invention proposes an anesthetic waste gas treatment device to solve the above-mentioned problems. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an anesthetic waste gas treatment device that triggers the opening and closing of each chamber based on changes in waste gas flow rate within the waste gas pipe, thereby preventing untimely extraction when the waste gas flow rate is high.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: An anesthetic waste gas treatment device includes a waste gas pipe connected to the outlet of an anesthesia machine, a treatment cylinder connected to the waste gas pipe, a pressure relief valve provided at the connection between the waste gas pipe and the treatment cylinder, and a primary cavity, an intermediate cavity and a deep cavity arranged sequentially from the inside to the outside along its axial direction inside the treatment cylinder. The primary cavity is configured as a cylindrical structure, and the intermediate cavity and the deep cavity are both configured as annular cylindrical structures. An opening is opened on one side of the top of the intermediate cavity and the deep cavity. The openings on the intermediate cavity and the deep cavity are configured as a staggered structure. A check valve is provided inside the opening and on the upper part of the primary cavity. A connecting rod is fixedly connected to the bottom of the diaphragm of the pressure relief valve, and a control component is provided at the bottom of the connecting rod to control the opening and closing of the upper ports of the intermediate chamber and the depth chamber.

[0006] The technical principle of the above scheme is as follows: A primary chamber (cylindrical), an intermediate chamber (annular column), and a depth chamber (annular column) are arranged sequentially from the inside to the outside along the axial direction inside the treatment cylinder to form a three-layer nested treatment space. When the exhaust gas flow rate is small (exhaust gas concentration is low), the pressure on the pressure relief valve diaphragm is small, the connecting rod is in a high position, the openings of the intermediate chamber and the depth chamber are closed, and the exhaust gas is only treated through the primary chamber. When the exhaust gas flow rate is large (exhaust gas concentration is high) and exceeds the treatment capacity of the primary chamber, the pressure in the exhaust gas pipe increases, pushing the pressure relief valve diaphragm to deform downward, causing the connecting rod to move downward synchronously. The bottom end of the connecting rod triggers the control component to open the openings of the intermediate chamber and the depth chamber in sequence. After the openings are opened, the exhaust gas is treated synchronously through different chambers.

[0007] The above approach has the following beneficial effects: 1. This solution achieves automatic opening and closing of the chamber through the linkage of the pressure relief valve, connecting rod, and control components, avoiding untimely extraction or overload caused by flow fluctuations, and dynamically adapting to changes in the flow rate within the waste gas pipe. 2. In this solution, only the primary chamber works at low flow rates. The filter screen in the primary chamber can effectively filter larger impurities such as particulate matter in the exhaust gas, reducing the wear and tear on the materials in the intermediate and deep chambers and lowering maintenance costs. 3. In this solution, the nested annular chamber design saves space, while the misaligned openings ensure that the chamber processing space follows changes in flow rate.

[0008] Furthermore, the control component includes a T-shaped slide rail, the bottom of which is fixedly connected to the top of the intermediate cavity. A baffle is slidably fitted on the T-shaped slide rail above the openings of the intermediate cavity and the depth cavity. The bottom of the baffle is in contact with the tops of both the intermediate cavity and the depth cavity. A wedge block is fixedly connected to the side of the baffle near the T-shaped slide rail. The inclined surface of the wedge block is higher on the side near the diaphragm than on the other side. The inclined surface of the wedge block is located within the motion trajectory of the bottom end of the connecting rod.

[0009] Beneficial effects: Through the cooperation of the T-shaped slide rail, baffle, and wedge block, the vertical displacement of the connecting rod is converted into the horizontal sliding of the baffle. The connecting rod moves down to press the inclined surface of the wedge block, and the horizontal movement of the wedge block drives the baffle to slide along the T-shaped slide rail, thus opening the passage.

[0010] Furthermore, a fixed plate and a limiting plate are fixedly connected to both ends of the T-shaped slide rail, respectively. A spring is fixedly connected to the side of the fixed plate near the limiting plate, and the other end of the spring is fixedly connected to the baffle.

[0011] Beneficial effects: When the baffle slides, it compresses the spring. After the connecting rod returns to its original position, the elastic potential energy of the spring is released, pulling the plate back to its original position and fitting into the opening. At the same time, the fixed plate and the limiting plate limit the sliding stroke of the baffle.

[0012] Furthermore, a filter screen is coaxially fixedly connected in the primary chamber, an adsorption layer of quicklime and activated carbon is provided in the intermediate chamber, and a molecular sieve adsorption column is provided in the depth chamber.

[0013] Beneficial effects: By connecting different chambers according to the concentration of exhaust gas, the purification accuracy is improved. The primary chamber filters particulate matter; the intermediate chamber adsorbs water molecules and organic matter; and the deep chamber selectively adsorbs anesthetic gas molecules.

[0014] Furthermore, the primary cavity, intermediate cavity, and depth cavity are all connected to discharge tubes.

[0015] Beneficial effects: Simplifies gas collection path, facilitating subsequent centralized treatment or emission.

[0016] Furthermore, a collection cylinder is provided outside the processing cylinder, and a collection pipe is connected to the top of the collection cylinder. The collection pipe is connected to the discharge pipe.

[0017] Beneficial effects: By collecting the gases from each exhaust pipe through the collection pipe, centralized collection or further treatment can be achieved, reducing the complexity of pipeline layout and facilitating unified monitoring and treatment of exhaust gases.

[0018] Furthermore, all discharge pipes are equipped with one-way valves.

[0019] Beneficial effects: Ensures unidirectional flow of treated gas, avoids mixing of treated and untreated gas, guarantees treatment efficiency, and prevents secondary pollution.

[0020] Furthermore, an air pump is installed inside the collection cylinder, and the air pump signal is connected to a controller.

[0021] Beneficial effects: Improves pumping capacity under high flow rates, avoids pressure buildup in the collection cylinder, and ensures the stability of the treatment system.

[0022] Furthermore, a flow sensor is installed at the connection between the exhaust pipe and the treatment cylinder, and the flow sensor is connected to the controller signal.

[0023] Beneficial effects: The flow sensor inside the exhaust pipe monitors the exhaust gas flow in real time and transmits the signal to the controller, serving as an auxiliary basis for adjusting the power of the air pump.

[0024] Furthermore, a buzzer and a warning light are fixedly connected to the outer wall of the processing cylinder, and both the buzzer and the warning light are connected to the controller signal.

[0025] Beneficial effects: When the flow rate exceeds the limit or the air pump malfunctions, the controller receives a signal to control the buzzer to sound and the warning light to flash, promptly reminding medical staff to perform maintenance, avoiding the risk of exhaust gas leakage caused by equipment failure, and improving safety.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] Figure 1 This is an overall isometric view of an embodiment of the anesthetic waste gas treatment device of the present invention; Figure 2 This is a front sectional view of the treatment cylinder of an embodiment of the anesthetic waste gas treatment device of the present invention; Figure 3 This is a horizontal sectional view of the treatment cylinder in an embodiment of the anesthetic waste gas treatment device of the present invention; Figure 4 This is a side sectional view of a wedge-shaped block in an embodiment of the anesthetic waste gas treatment device of the present invention.

[0028] The reference numerals in the accompanying drawings of the instruction manual include: 1. Exhaust pipe; 2. Treatment cylinder; 3. Pressure relief valve; 4. Diaphragm; 5. Primary chamber; 6. Intermediate chamber; 7. Depth chamber; 8. Port; 9. Check valve; 10. Connecting rod; 11. T-shaped slide rail; 12. Baffle; 13. Wedge block; 14. Fixing plate; 15. Limiting plate; 16. Spring; 17. Filter screen; 18. Discharge pipe; 19. Collection cylinder; 20. Collection pipe; 21. One-way valve. Detailed Implementation

[0029] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] The following detailed description illustrates the specific implementation methods: Example 1:

[0033] As attached Figure 1 and attached Figure 2 As shown: An anesthetic waste gas treatment device includes a waste gas pipe 1 connected to the exhaust port of an anesthesia machine, a treatment cylinder 2 connected to the waste gas pipe 1, and a pressure relief valve 3 provided at the connection between the waste gas pipe 1 and the treatment cylinder 2. The pressure relief valve 3 includes, but is not limited to, Spirax Sarco DBB series pressure relief valves. Because traditional negative pressure exhaust equipment usually uses a single negative pressure source to draw in waste gas, when the amount of anesthetic waste gas fluctuates during surgery, such as when the patient's breathing rhythm changes, the problem of untimely exhaust of waste gas is likely to occur, increasing the anesthesia risk for patients and medical staff. To ensure that the anesthetic waste gas expelled by the patient can be discharged in a timely manner, as shown in the attached... Figure 2 As shown, the processing cylinder 2 has a primary chamber 5, an intermediate chamber 6, and a depth chamber 7 arranged sequentially from the inside to the outside along its axial direction. The primary chamber 5 is cylindrical, while the intermediate chamber 6 and the depth chamber 7 are both annular cylindrical structures. A filter screen 17 is coaxially fixedly connected inside the primary chamber 5. The intermediate chamber 6 contains an adsorption layer of quicklime and activated carbon, and the depth chamber 7 contains a molecular sieve adsorption column. Both the intermediate chamber 6 and the depth chamber 7 have openings 8 on one side of their tops. The openings 8 on the intermediate chamber 6 and the depth chamber 7 are staggered. Check valves 9 are installed inside the openings 8 and on the upper part of the primary chamber 5. A connecting rod 10 is fixedly connected to the bottom of the diaphragm 4 of the pressure relief valve 3 by adhesive. The bottom end of the connecting rod 10 has a control component for controlling the opening and closing of the openings 8 on the intermediate chamber 6 and the depth chamber 7. Figure 2 Appendix Figure 3and attached Figure 4 As shown, the control assembly includes a T-shaped slide rail 11, the bottom of which is welded to the top of the intermediate cavity 6. A baffle 12 is slidably fitted on the T-shaped slide rail 11 above the opening 8 of the intermediate cavity 6 and the depth cavity 7. The bottom of the baffle 12 is in contact with the top of both the intermediate cavity 6 and the depth cavity 7. A wedge block 13 is welded to the side of the baffle 12 near the T-shaped slide rail 11. The inclined surface of the wedge block 13 is higher on the side near the diaphragm 4 than on the other side. The inclined surface of the wedge block 13 is located within the movement trajectory of the bottom end of the connecting rod 10. The length direction of the baffle 12 is on the same horizontal line as the length direction of the baffle 12, the length direction of the baffle 12 is perpendicular to the length direction of the T-shaped slide rail 11, and there is a sliding space between the side of the baffle 12 away from the wedge block 13 and the inner wall of the processing cylinder 2; a fixing plate 14 and a limiting plate 15 are welded to both ends of the T-shaped slide rail 11 respectively, and a spring 16 is welded to the side of the fixing plate 14 near the limiting plate 15. The other end of the spring 16 is welded to the baffle 12 to limit the stroke of the baffle 12 and to provide a restoring force for the baffle 12; Primary chamber 5, intermediate chamber 6, and depth chamber 7 are all connected to discharge pipes 18, and each discharge pipe 18 is equipped with a one-way valve 21. A collection cylinder 19 is provided outside the treatment cylinder 2, and a collection pipe 20 is connected to the top of the collection cylinder 19. The collection pipe 20 is connected to the discharge pipe 18. An air pump is provided inside the collection cylinder 19. The air pump is preferably a Thomas 6230C diaphragm pump. The air pump is connected to a controller. The controller is preferably a Siemens S7-1200. The treated gas in primary chamber 5, intermediate chamber 6, and depth chamber 7 is discharged and collected, and the one-way valve 21 prevents the treated gas from mixing with the waste gas.

[0034] The specific implementation process is as follows: When the exhaust gas discharged from the anesthesia machine enters the exhaust pipe 1, it will first flow to the treatment cylinder 2. Since the traditional negative pressure exhaust equipment with a single negative pressure source is prone to untimely extraction when the exhaust gas volume fluctuates, a pressure relief valve 3 is set at the connection between the exhaust pipe 1 and the treatment cylinder 2. The pressure relief valve 3 senses the pressure change in the exhaust pipe 1. The primary chamber 5, the intermediate chamber 6 and the depth chamber 7 are used. The nested design of the primary chamber 5 can save space while realizing the combination of chambers with different treatment intensities to meet the exhaust gas treatment needs of different flow rates. When the exhaust gas flow rate is low, the pressure inside the exhaust pipe 1 is low, the pressure on the diaphragm 4 of the pressure relief valve 3 is low, the connecting rod 10 is in a high position, and no pressure is applied to the wedge block 13. At this time, the baffle 12 covers the openings 8 of the intermediate chamber 6 and the depth chamber 7, and the exhaust gas is only treated through the primary chamber 5. Since the concentration of pollutants in the anesthetic exhaust gas is relatively low when the exhaust gas flow rate is low, and the main components are anesthetic gases and a small amount of impurities, the filter screen in the primary chamber can effectively filter larger impurities such as particulate matter in the exhaust gas. The processing capacity of the primary chamber is sufficient to cope with the pollutant load under low flow rate. There is no need for higher precision processing materials such as adsorption layers and molecular sieve adsorption columns in the intermediate and depth chambers to achieve effective purification of low-concentration exhaust gas. In this way, only the primary chamber 5 works at low flow rate, which can reduce the material wear of the intermediate chamber 6 and the depth chamber 7 and reduce maintenance costs. When the exhaust gas flow rate exceeds the processing capacity of the primary chamber 5, the pressure inside the exhaust gas pipe 1 increases, pushing the diaphragm 4 of the pressure relief valve 3 to deform downwards, combined with the attached... Figure 4 The diaphragm 4 drives the connecting rod 10 to move downwards synchronously. The bottom end of the connecting rod 10 presses against the inclined surface of the wedge block 13, causing the wedge block 13 to move as if attached. Figure 3 As shown, the rod 10 moves horizontally to the right, thereby causing the baffle 12 to slide to the right along the T-shaped slide rail 11. As the downward movement of the connecting rod 10 increases, the baffle 12 moves to the right and gradually opens the port 8. Due to the misalignment of the port 8, the intermediate chamber 6 and the depth chamber 7 will open in sequence. After the port 8 is opened, the exhaust gas is processed synchronously through different chambers. This realizes the transmission process of pressure relief valve 3-connecting rod 10-baffle 12 to control the opening and closing of the port 8, dynamically adapting to the flow changes in the exhaust gas pipe 1, and avoiding untimely extraction or overload caused by flow fluctuations. The gas processed by the primary chamber 5, intermediate chamber 6 and depth chamber 7 is discharged into the collection cylinder 19 through the discharge pipe 18 and the collection pipe 20. At the same time, the one-way valve 21 prevents the treated gas from mixing with the exhaust gas, ensuring treatment efficiency and preventing secondary pollution.

[0035] A comparison was made between the anesthetic waste gas treatment device of Example 1 and the traditional Shenzhen Torricelli negative pressure exhaust disinfection equipment. The specific experiments are as follows: Experimental Objective: To compare the performance of the anesthetic waste gas treatment device of Example 1 with the traditional Shenzhen Torricelli negative pressure exhaust disinfection equipment in terms of waste gas treatment efficiency, dynamic response capability, and maintenance cost. By simulating different waste gas flow conditions, the effectiveness of the two devices in treating anesthetic waste gas is evaluated to verify the advantages of the device of Example 1 in avoiding untimely extraction, reducing material consumption, and improving safety.

[0036] Experimental steps: 1. Experimental Setup: A simulated anesthetic waste gas emission system was constructed, using a standard anesthesia machine to generate waste gas. The waste gas composition consisted of common anesthetic gases (such as isoflurane), and the flow rate was adjustable from 0.5 L / min to 10 L / min. The apparatus from Example 1 and a traditional Shenzhen Torricelli device were installed, and pressure sensors, flow sensors, and gas analyzers were connected.

[0037] 2. Parameter Measurement: The exhaust gas treatment efficiency of the two devices was recorded when the exhaust gas flow rates were 1 L / min, 3 L / min, 5 L / min, 8 L / min and 10 L / min, respectively (calculated by measuring the concentration of anesthetic gas at the outlet using a gas analyzer).

[0038] The pressure changes inside the measurement system are monitored, with particular attention to the pressure value at the connection between the exhaust pipe and the treatment cylinder.

[0039] Simulate continuous operation for 24 hours and record the material loss of the two devices (the loss rate is calculated by weighing the change in mass of the adsorbed material before and after the adsorption).

[0040] Observe the opening status of the primary cavity, intermediate cavity and depth cavity in the device of Example 1, as well as the fixed negative pressure response of the conventional device.

[0041] 3. Data Collection: Each flow point is tested three times, and the average value is taken to ensure accuracy. Simultaneously, abnormal equipment events (such as excessive pressure, leakage, etc.) are recorded.

[0042] Experimental data: Experimental conclusion: Experimental results show that the anesthetic waste gas treatment device of Example 1 is superior to the traditional Shenzhen Torricelli equipment in terms of waste gas treatment efficiency, pressure control, and material consumption. At low flow rates, the efficiencies of the two devices are similar, but as the flow rate increases, the device of Example 1 maintains higher treatment efficiency by automatically opening the intermediate and deep chambers, while the efficiency of the traditional equipment decreases significantly. Simultaneously, the internal pressure of the device of Example 1 is more stable, effectively avoiding the risks of untimely extraction and pipe rupture. Regarding material consumption, the device of Example 1, due to its dynamic chamber opening and closing mechanism, reduces unnecessary material usage, resulting in lower consumption than the traditional equipment. In conclusion, the device of Example 1 is more suitable for treating fluctuating anesthetic waste gas, improving both safety and economy.

[0043] Example 2:

[0044] As attached Figure 1As shown, the difference from Embodiment 1 is that, since the power of the air pump is usually set according to the flow rate of the exhaust gas in the exhaust pipe 1, if the air pump power is too high, it will cause an excessively strong negative pressure in the collection cylinder 19, making the exhaust gas flow rate too fast, thereby reducing the contact time between the exhaust gas and the processing materials in each chamber; while if the air pump power is too low, the negative pressure in the collection cylinder 19 is insufficient, and the treated gas cannot be effectively discharged in time, causing the gas in each chamber to accumulate, the pressure to rise, and hindering the subsequent exhaust gas from entering the processing chamber, resulting in untimely exhaust gas extraction; therefore, in order to improve the accuracy of the air pump operation, a flow sensor is installed at the connection between the exhaust pipe 1 and the processing cylinder 2. The preferred model of the flow sensor is Sensirion SFM3000. The flow sensor is connected to the controller signal, and the exhaust gas flow rate is monitored in real time through the flow sensor in the exhaust pipe 1, and the signal is transmitted to the controller as an auxiliary judgment basis for air pump power adjustment; a buzzer and a warning light are welded to the outer wall of the processing cylinder 2. The preferred model of the buzzer is Murata PKM13EPYH4000, and the preferred model of the warning light is ADAFRUIT RGB. The LED, buzzer, and warning light are all connected to the controller signal. When the flow exceeds the limit or the air pump malfunctions, the controller receives the signal and controls the buzzer to sound and the warning light to flash, promptly reminding medical staff to perform maintenance, avoiding the risk of exhaust gas leakage caused by equipment failure, and improving safety.

[0045] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An anesthetic waste gas treatment device, comprising a waste gas pipe (1) connected to the outlet of an anesthesia machine, a treatment cylinder (2) connected to the waste gas pipe (1), and a pressure relief valve (3) provided at the connection between the waste gas pipe (1) and the treatment cylinder (2), characterized in that: The processing cylinder (2) is provided with a primary cavity (5), an intermediate cavity (6) and a depth cavity (7) in sequence from the inside to the outside along its axial direction. The primary cavity (5) is set as a cylindrical structure, and the intermediate cavity (6) and the depth cavity (7) are both set as annular column structures. The top side of the intermediate cavity (6) and the depth cavity (7) are both opened with a through port (8). The through ports (8) on the intermediate cavity (6) and the depth cavity (7) are set as a staggered structure. Check valves (9) are provided in the through ports (8) and on the upper part of the primary cavity (5). The bottom of the diaphragm (4) of the pressure relief valve (3) is fixedly connected to a connecting rod (10), and the bottom end of the connecting rod (10) is provided with a control component for controlling the opening and closing of the upper port (8) of the intermediate chamber (6) and the depth chamber (7).

2. The anesthetic waste gas treatment device according to claim 1, characterized in that: The control component includes a T-shaped slide rail (11), the bottom of which is fixedly connected to the top of the intermediate cavity (6). A baffle (12) is slidably fitted on the T-shaped slide rail (11) above the opening (8) of the intermediate cavity (6) and the depth cavity (7). The bottom of the baffle (12) is in contact with the top of the intermediate cavity (6) and the depth cavity (7). A wedge block (13) is fixedly connected to the side of the baffle (12) near the T-shaped slide rail (11). The inclined surface of the wedge block (13) is higher on the side near the diaphragm (4) than on the other side. The inclined surface of the wedge block (13) is located within the motion trajectory of the bottom end of the connecting rod (10).

3. The anesthetic waste gas treatment device according to claim 2, characterized in that: The T-shaped slide rail (11) is fixedly connected to a fixed plate (14) and a limiting plate (15) at both ends. A spring (16) is fixedly connected to the side of the fixed plate (14) near the limiting plate (15). The other end of the spring (16) is fixedly connected to the baffle (12).

4. The anesthetic waste gas treatment device according to claim 1, characterized in that: A filter screen (17) is coaxially fixed in the primary chamber (5), an adsorption layer of quicklime and activated carbon is provided in the intermediate chamber (6), and a molecular sieve adsorption column is provided in the depth chamber (7).

5. The anesthetic waste gas treatment device according to claim 1, characterized in that: The primary cavity (5), intermediate cavity (6) and depth cavity (7) are all connected to the discharge pipe (18).

6. The anesthetic waste gas treatment device according to claim 5, characterized in that: The processing cylinder (2) is provided with a collection cylinder (19) outside, and a collection pipe (20) is connected to the top of the collection cylinder (19). The collection pipe (20) is connected to the discharge pipe (18).

7. The anesthetic waste gas treatment device according to claim 6, characterized in that: Each discharge pipe (18) is equipped with a one-way valve (21).

8. The anesthetic waste gas treatment device according to claim 7, characterized in that: An air pump is installed inside the collection cylinder (19), and the air pump signal is connected to a controller.

9. The anesthetic waste gas treatment device according to claim 1, characterized in that: A flow sensor is installed at the connection between the exhaust pipe (1) and the treatment cylinder (2), and the flow sensor is connected to the controller signal.

10. The anesthetic waste gas treatment device according to claim 9, characterized in that: A buzzer and a warning light are fixedly connected to the outer wall of the processing cylinder (2), and both the buzzer and the warning light are connected to the controller signal.

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