Device for purifying and recycling waste anesthetic gas in operating room

Abstract

The purification and recovery device comprises a supporting frame, a filtering assembly, a negative pressure pump and a gas collection tank are arranged at the bottom of the inner wall of the supporting frame, a gas desorption assembly is arranged at the position, above the filtering assembly, in the supporting frame, and a heating assembly is arranged on the outer wall of the gas desorption assembly; a gas storage tank used for storing inert gas is detachably connected to one side of the upper end of the filtering assembly, a vacuum pump is installed on one side of the gas desorption assembly in the supporting frame, a condensation recovery assembly is arranged below the vacuum pump, and a control panel used for controlling all the components to work is installed on one side of the outer wall of the supporting frame. The waste anesthetic gas treatment device not only can purify waste anesthetic gas in the operating room, but also can recycle high-value anesthetic.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a device for purifying and recovering anesthetic waste gas in an operating room. Background Technology

[0002] The invention of inhaled anesthetic drugs marked the birth of modern anesthesiology, which greatly promoted the progress of modern medicine and the improvement of human social civilization. When anesthesia machines are working, they emit exhaust gas, which pollutes the operating room environment. Long-term inhalation can cause significant harm to the health of doctors and nurses. At the same time, some anesthetic gases cannot be absorbed when anesthetizing patients and are expelled through the respiratory system, causing the operating room to be filled with anesthetic gases. Being in a trace anesthetic gas environment for a long time can harm the physical and mental health of operating room staff. Therefore, anesthetic exhaust gas purifiers are used to treat anesthetic exhaust gas.

[0003] The existing methods for treating anesthetic waste gas are as follows: 1. Passive extraction system: The exhaust gas is directly discharged into the outdoor atmosphere through pipelines, which only transfers the pollution without purifying it, and causes waste of anesthetic drugs and air pollution.

[0004] 2. Activated carbon adsorption device: Uses disposable activated carbon canisters for adsorption. The disadvantages are that the adsorption capacity is limited, it needs to be replaced frequently, it generates secondary solid waste, the operating cost is high, and it cannot recover valuable anesthetic drugs.

[0005] 3. Catalytic decomposition device: This device uses a catalyst to decompose anesthetic gases at high temperatures. It is energy-intensive, may produce secondary pollutants (such as NOx and CO), and cannot recover anesthetic drugs. Summary of the Invention

[0006] The purpose of this invention is to provide an operating room anesthetic waste gas purification and recovery device, which can not only purify the anesthetic waste gas in the operating room, but also recover high-value anesthetic drugs.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: An operating room anesthesia waste gas purification and recovery device includes a support frame, characterized in that: a filter assembly and a negative pressure pump are arranged at the bottom of the inner wall of the support frame; a gas collecting pipe is arranged at the front end of the outer wall of the filter assembly and communicates with it; the front end of the gas collecting pipe is connected to a conical gas collecting hood; a gas collecting tank is arranged on one side of the filter assembly; the air inlet of the negative pressure pump is connected to an air inlet pipe that communicates with the rear end of the outer wall of the filter assembly, and its air outlet is connected to an air outlet pipe that communicates with the lower end of the outer wall of the gas collecting tank; a gas desorption assembly is arranged inside the support frame above the filter assembly; and a heating assembly is arranged on the outer wall of the gas desorption assembly. The upper end of the gas collecting tank is provided with a first gas guide pipe communicating with the lower end of the outer wall of the gas desorption component. A gas storage tank for storing inert gas is detachably connected to one side of the upper end of the filter component. The outlet of the gas storage tank is detachably connected with a second gas guide pipe communicating with the lower end of the outer wall of the gas desorption component. A vacuum pump is installed inside the support frame on one side of the gas desorption component, and a condensation recovery component is arranged below the vacuum pump. The inlet of the vacuum pump is connected to the upper end of the gas desorption component with a first gas supply pipe, and its outlet is connected to the upper end of the condensation recovery component with a second gas supply pipe. A control panel for controlling the operation of each component is installed on one side of the outer wall of the support frame.

[0008] By adopting the above technical solution, when using the device, first place it in the operating room and turn it on. Then, place the gas collection hood in a location where a large amount of anesthetic waste gas is generated. Next, operate the control panel to start the negative pressure pump, and simultaneously start the heating and condensation recovery components. The negative pressure pump draws air from the filter component through the air inlet pipe, allowing the air containing anesthetic waste gas to enter the filter component and filter impurities. Then, the filtered air enters the gas collection tank. Once the concentration of anesthetic gas in the gas collection tank reaches a certain value, the gas in the gas collection tank enters the gas desorption component. At the same time, open the gas storage tank to allow inert gas to enter as well. Then, start the vacuum pump to stir the anesthetic waste gas and inert gas in the gas desorption component and evacuate it. Then, with the cooperation of the heating component, the gas enters the condensation recovery component. The condensation recovery component liquefies the anesthetic gas molecules, forming a liquid, which is then collected, thereby achieving the purification and recovery of anesthetic waste gas.

[0009] A further embodiment of the present invention is that the filter assembly includes a box with one open end, a box cover hinged and sealed to one side of the box opening end, a pre-filter arranged sequentially from front to back between the upper and lower ends of the inner wall of the box and detachably connected to both, a moisture-absorbing cotton filter element, a high-efficiency HEPA filter, and an air guide cover arranged in conjunction with the rear end of the inner wall of the box and extending out of its outer wall.

[0010] By adopting the above technical solution, impurity particles in the collected gas can be filtered out, thereby improving the cleanliness of the recovered anesthetic drugs.

[0011] A further embodiment of the present invention is that the gas collection tank includes a tank body, a partition plate disposed on the inner wall of the tank body and dividing it into upper and lower chambers, a first solenoid valve disposed on one side of the outer wall of the tank body and connecting the two chambers, a gas concentration sensor disposed on the upper side of the inner wall of the tank body, and a second solenoid valve disposed on the upper side of the outer wall of the tank body and connected thereto.

[0012] By adopting the above technical solution, the collected gas can be stored in two separate chambers. However, when the anesthetic waste gas reaches a certain concentration, it will not affect the normal operation of the anesthetic waste gas collection work. The two chambers do not affect each other during operation.

[0013] A further embodiment of the present invention is that the gas desorption assembly includes a vacuum tank, an adsorption column disposed within the vacuum tank, and a third solenoid valve installed on one side of the upper end of the outer wall of the vacuum tank. The adsorption column is made of one or more of hydrophobically modified metal-organic framework materials, activated carbon fibers, or high-silica molecular sieves.

[0014] By adopting the above technical solution, the enriched anesthetic gas molecules can be efficiently desorbed, which facilitates the condensation and liquefaction of the desorbed anesthetic gas molecules.

[0015] A further embodiment of the present invention is that the heating assembly includes a heat insulation sleeve, a heat-conducting layer disposed in conjunction with the inner wall of the heat insulation sleeve, a heating wire disposed in conjunction with the heat insulation sleeve and the heat-conducting layer, and a heater disposed on the outer wall of the heat insulation sleeve and connected to the heating wire.

[0016] A further embodiment of the present invention includes: a heat-conducting pipe with an open lower end, a thermostatic cooler fitted to the outer wall of the heat-conducting pipe, a spiral condenser fitted to the inner wall of the heat-conducting pipe, a fixed cap fitted inside the heat-conducting pipe and communicating with the lower end of the spiral condenser, an exhaust pipe communicating with one side of the upper end of the fixed cap and extending out of the heat-conducting pipe, a cold trap recovery bottle detachably connected to the fixed cap, and an insulation cap detachably connected to the open end of the heat-conducting pipe and used to cover the cold trap recovery bottle.

[0017] By adopting the above technical solution, the desorbed high-concentration anesthetic gas molecules can be liquefied, and the anesthetic fluid can be collected in a timely manner after liquefaction, which facilitates quantitative recovery.

[0018] A further provision of the present invention is that a heat dissipation component is provided inside the support frame at the hot end position of the constant temperature refrigerator.

[0019] A further provision of the present invention is that the heat dissipation assembly includes a fixed frame and a plurality of silent fans that are fitted and installed within the fixed frame.

[0020] A further feature of the present invention is that a fine exhaust gas filter connected to the rear end of the exhaust pipe is provided inside the support frame.

[0021] By adopting the above technical solution, uncondensed trace gases can be adsorbed by the exhaust gas fine filter, thereby reducing the content of anesthetic molecules in the exhaust gas and effectively protecting the health of medical staff.

[0022] In summary, the present invention has the following beneficial effects: Firstly, this invention can not only purify the anesthetic waste gas in the operating room, but also recover high-value anesthetic drugs. Secondly, the gas collecting tank of the present invention can store the collected gas in two chambers respectively, but when the anesthetic waste gas reaches a certain concentration for mixing and desorption, it will not affect the normal operation of the anesthetic waste gas collection work, and the two chambers do not affect each other when working. Thirdly, the gas desorption component of the present invention can use pressure difference to quickly desorb anesthetic gas molecules, and can also use inert gas to force anesthetic gas molecules through the entire adsorption column, thereby actively and physically "flushing" and "carrying" the desorbed molecules and efficiently and directionally transporting them to the condensation recovery component. Fourth, the inert gas of this invention can not only directionally carry the desorbed anesthetic gas, but also create an oxygen-free environment to ensure the safety of the subsequent heating process, eliminate the risk of combustion and explosion, and reduce the partial pressure of the anesthetic gas by dilution, thereby promoting the uniform distribution of heat on the adsorption column. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 It is mainly used to show the positional connection relationship of each component; Figure 3 This is a schematic diagram of the structure of the filter component of the present invention; Figure 4 This is a schematic diagram of the heating component of the present invention; Figure 5 This is a schematic diagram of the gas desorption assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the condensation recovery component of the present invention; Figure 7 This is a schematic diagram of the heat dissipation component of the present invention.

[0024] In the diagram: 1. Support frame; 11. Filter assembly; 12. Housing; 13. Housing cover; 14. Pre-filter; 15. Moisture-absorbing cotton filter element; 16. High-efficiency HEPA filter; 17. Air guide hood; 2. Gas collection pipe; 21. Gas collection hood; 3. Gas collection tank; 31. Tank body; 32. Partition; 33. Chamber; 34. First solenoid valve; 35. Gas concentration sensor; 36. Second solenoid valve; 37. Negative pressure pump; 4. Inlet pipe; 41. Outlet pipe; 42. Gas desorption assembly; 43. Vacuum tank; 44. Adsorption column; 45. Third solenoid valve; 5. 51. Heating assembly; 52. Insulation sleeve; 53. Heat-conducting layer; 54. Heating wire; 55. Heater; 6. First gas guide pipe; 61. Gas storage tank; 62. Second gas guide pipe; 63. Vacuum pump; 7. Condensation recovery assembly; 71. Heat-conducting pipe; 72. Thermostatic refrigerator; 73. Spiral condenser tube; 74. Fixing cover; 75. Exhaust pipe; 76. Cold trap recovery bottle; 77. Insulation cover; 8. First gas supply pipe; 81. Second gas supply pipe; 82. Heat dissipation assembly; 83. Fixing frame; 84. Silent fan; 85. Exhaust gas fine filter; 86. Control panel. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 this invention.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," not that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" 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, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0029] Example, refer to Figures 1-7An operating room anesthesia waste gas purification and recovery device includes a support frame 1. A filter assembly 11 and a negative pressure pump 37 are installed at the bottom of the inner wall of the support frame 1. The filter assembly 11 includes a box 12 with one open end, a box cover 13 hinged and sealed to one side of the open end of the box 12, a primary filter 14 arranged from front to back between the upper and lower ends of the inner wall of the box 12 and detachably connected to it, a moisture-absorbing cotton filter element 15, a high-efficiency HEPA filter 16, and an air guide hood 17 that is installed at the rear end of the inner wall of the box 12 and extends out of its outer wall. The air guide hood 17 can accelerate the flow of gas in the box 12. A gas collection pipe 2 is provided at the front end of the outer wall of the box 12 and is connected to it. The front end of the gas collection pipe 2 is connected to a conical gas collection hood 21. A gas collection tank 3 is provided on one side of the filter assembly 11.

[0030] The gas collecting tank 3 includes a tank body 31, a partition 32 that is fitted on the inner wall of the tank body 31 and divides it into upper and lower chambers 33, a first solenoid valve 34 that is fitted on one side of the outer wall of the tank body 31 and connects the two chambers 33, a gas concentration sensor 35 that is fitted on the upper side of the inner wall of the tank body 31, and a second solenoid valve 36 that is installed on the upper side of the outer wall of the tank body 31 and connected to it. The air inlet of the negative pressure pump 37 is connected to an air inlet pipe 4 that is connected to the rear end of the air guide cover 17, and its air outlet is connected to an air outlet pipe 41 that is connected to the lower chamber 33 of the gas collecting tank 3. A gas desorption assembly 42 is provided above the filter assembly 11 in the support frame 1. The gas desorption assembly 42 includes a vacuum tank 43, an adsorption column 44 that is fitted in the vacuum tank 43, and a third solenoid valve 45 that is installed on the upper side of the outer wall of the vacuum tank 43. The adsorption column 44 is made of one or more of hydrophobically modified metal-organic framework materials, activated carbon fibers, or high-silica molecular sieves.

[0031] A heating component 5 is provided on the outer wall of the gas desorption assembly 42. The heating component 5 includes a heat insulation sleeve 51, a heat-conducting layer 52 disposed on the inner wall of the heat insulation sleeve 51, a heating wire 53 disposed between the heat insulation sleeve 51 and the heat-conducting layer 52, and a heater 54 disposed on the outer wall of the heat insulation sleeve 51 and connected to the heating wire 53. A first gas guide pipe 6 is provided at the upper end of the gas collection tank 3 and communicates with the lower end of the outer wall of the gas desorption assembly 42. A gas storage tank 61 for storing inert gas is detachably connected to one side of the upper end of the filter assembly 11. A second gas guide pipe 62 is detachably connected to the outlet of the gas storage tank 61 and communicates with the lower end of the outer wall of the gas desorption assembly 42. The lower end of the second gas guide pipe 62 is connected to the gas storage tank 61 through a fourth solenoid valve. A vacuum pump 63 is installed on one side of the gas desorption assembly 42 in the support frame 1, and a condensation recovery assembly 7 is provided below the vacuum pump 63.

[0032] The condensation recovery assembly 7 includes a heat-conducting pipe 71 with an open lower end, a thermostatic cooler 72 fitted to the outer wall of the heat-conducting pipe 71, a spiral condenser 73 fitted to the inner wall of the heat-conducting pipe 71, a fixed cover 74 fitted inside the heat-conducting pipe 71 and connected to the lower end of the spiral condenser 73, an exhaust pipe 75 connected to one side of the upper end of the fixed cover 74 and extending out of the heat-conducting pipe 71, a cold trap recovery bottle 76 detachably connected to the fixed cover 74, and an insulation cover 77 detachably connected to the open end of the heat-conducting pipe 71 and used to cover the cold trap recovery bottle 76. A tail gas fine filter 85 connected to the rear end of the exhaust pipe 75 is installed in the support frame 1. A heat dissipation assembly 82 is installed in the support frame 1 at the hot end position of the thermostatic cooler 72. The heat dissipation assembly 82 includes a fixed frame 83 and multiple silent fans 84 fitted inside the fixed frame 83.

[0033] A first gas supply pipe 8 is connected between the inlet of the vacuum pump 63 and the upper end of the third solenoid valve 45. A second gas supply pipe 81 is connected between the outlet of the vacuum pump 63 and the upper end of the spiral condenser 73. The diameter of the second gas supply pipe 81 is smaller than that of the first gas supply pipe 8. A control panel 86 is installed on one side of the outer wall of the support frame 1. The negative pressure pump 37, the gas collection tank 3, the gas desorption assembly 42, the vacuum pump 63, the heating assembly 5, the condensation recovery assembly 7, and the heat dissipation assembly 82 are all electrically connected to the control panel 86. The heater 54 and the constant temperature refrigerator 72 are controlled by the control panel 86 to achieve stable and constant operation.

[0034] Instructions for use: First, place the device in the operating room and turn it on. Then, place the gas collection hood 21 in a location where a large amount of anesthetic waste gas is generated. Next, operate the control panel 86 to start the negative pressure pump 37, and simultaneously start the heating component 5 and the condensation recovery component 7. The negative pressure pump 37 draws air from the filter component 11 through the air inlet pipe 4, allowing the air containing anesthetic waste gas to enter the filter component 11 through the gas collection pipe 2. The air then passes through the pre-filter 14, the moisture-absorbing cotton filter 15, and the high-efficiency HEPA filter 16 to remove droplets and respiratory secretions from the anesthetic waste gas in sequence. To remove impurities such as particles and water vapor, and to prevent impurities from entering the adsorption column 44 and causing blockage and contamination, the filtered air is then introduced into the gas collecting tank 3. The first solenoid valve 34 is opened and the second solenoid valve 36 is closed, allowing the gas to enter the two chambers 33 of the two tanks 31. The gas concentration sensor 35 monitors the concentration of the anesthetic gas in real time. When the concentration of the anesthetic gas in the upper chamber 33 of the tank 31 reaches a certain value, the first solenoid valve 34 is closed and the second solenoid valve 36 is opened, allowing the gas in the upper chamber 33 of the gas collecting tank 3 to enter the gas desorption assembly 42 through the first gas guide tube 6.

[0035] Simultaneously, the gas storage tank 61 is opened, allowing the inert gas to enter the vacuum tank 43 at a constant rate through the second gas guide pipe 62. Then, the vacuum pump 63 is activated to evacuate the vacuum tank 43. During this process, the heating wire 53 heats the vacuum tank 43 through the heater 54, while the heat insulation layer prevents heat loss. As the air pressure at the bottom of the vacuum tank 43 decreases, the anesthetic gas, carried by the inert gas, passes through the adsorption column 44. The gas rubs against the adsorption column 44, generating resistance. The closer to the outlet, the more direct the suction effect of the vacuum pump 63, and the lower the pressure generated. Thus, from the inlet to the outlet, the pressure shows a negative pressure gradient: the highest at the bottom, decreasing stepwise in the middle of the adsorption column 44, and the lowest at the outlet of the third solenoid valve 45. As the vacuum tank 43 is gently heated, the anesthetic gas molecules on the adsorption column 44 gain energy and desorb. The desorbed molecules are immediately "captured" by the flowing inert gas and, driven by this negative pressure gradient, are directionally transported to the first gas delivery pipe 8 at the outlet.

[0036] During the desorption process, the heating component 5, in conjunction with the inert gas, forms a highly efficient thermal desorption-carrier gas delivery synergistic mechanism. This ensures a high recovery of the adsorption capacity of the adsorption column 44, thereby achieving long-term, stable, and low-consumption operation of the entire purification and recovery device. Furthermore, the inert gas not only directionally carries the desorbed anesthetic gas but also establishes an oxygen-free environment, ensuring the safety of subsequent heating processes and eliminating the risk of combustion and explosion. It also reduces the partial pressure of the anesthetic gas through dilution, promoting uniform heat distribution on the adsorption column 44. Subsequently, the desorbed anesthetic gas molecules enter the condenser through the second gas delivery pipe 81. Inside the receiving component 7, the cooling energy generated by the thermostatic cooler 72 is conducted to the spiral condenser 73 through the heat conduction pipe 71, while the heat dissipation component 82 can quickly dissipate the heat generated at the hot end of the thermostatic cooler 72, improving its cooling efficiency. The desorbed anesthetic gas molecules are liquefied by low temperature, and after forming liquid, they flow into the cold trap recovery bottle 76 for collection, thereby achieving the purification and recovery of anesthetic waste gas. Finally, the heat preservation cover 77 is removed, and the cold trap recovery bottle 76 containing the anesthetic liquid is removed. The uncondensed gas will be discharged to the exhaust gas fine filter 85 through the exhaust pipe 75 for treatment.

[0037] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make inventive modifications to this embodiment as needed, but as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A surgical operating room anesthetic waste gas purification and recovery device, comprising a support frame (1), characterized in that: The bottom of the inner wall of the support frame (1) is provided with a filter assembly (11) and a negative pressure pump (37), the front end of the outer wall of the filter assembly (11) is provided with a gas collecting pipe (2) in communication therewith, the front end of the gas collecting pipe (2) is communicated with a gas collecting cover (21) arranged in a tapered manner, one side of the filter assembly (11) is provided with a gas collecting tank (3), the gas inlet of the negative pressure pump (37) is communicated with an air inlet pipe (4) in communication with the rear end of the outer wall of the filter assembly (11), and the gas outlet of the negative pressure pump (37) is communicated with an air outlet pipe (41) in communication with the lower end of the outer wall of the gas collecting tank (3), the support frame (1) is provided with a gas desorption assembly (42) above the filter assembly (11), and the outer wall of the gas desorption assembly (42) is provided with a heating assembly (5); The upper end of the gas collecting tank (3) is provided with a first air guide pipe (6) in communication with the lower end of the outer wall of the gas desorption assembly (42), one side of the upper end of the filter assembly (11) is detachably connected with a gas storage tank (61) for storing inert gas, the gas outlet of the gas storage tank (61) is detachably connected with a second air guide pipe (62) in communication with the lower end of the outer wall of the gas desorption assembly (42), and the support frame (1) is provided with a vacuum pump (63) on one side of the gas desorption assembly (42), and a condensation recovery assembly (7) is arranged below the vacuum pump (63), the first gas conveying pipe (8) is in communication between the gas inlet of the vacuum pump (63) and the upper end of the gas desorption assembly (42), and the second gas conveying pipe (81) is in communication between the gas outlet of the vacuum pump (63) and the upper end of the condensation recovery assembly (7), and the outer wall of the support frame (1) is provided with a control panel (86) for controlling the work of each component.

2. The operating room anesthetic waste gas purification and recovery device according to claim 1, characterized in that: The filter assembly (11) comprises an open-ended box body (12), a box cover (13) hinged to one side of the open end of the box body (12) and in sealing connection therewith, a primary filter screen (14) sequentially arranged on the inner wall of the box body (12) between the upper and lower ends and in detachable connection therewith, a moisture absorbing cotton filter core (15), a high efficiency HEPA filter screen (16), and a gas guide cover (17) arranged in cooperation on the rear end of the inner wall of the box body (12) and extending out of the outer wall thereof.

3. The operating room anesthetic waste gas purification and recovery apparatus as claimed in claim 1, characterized in that: The gas collecting tank (3) comprises a tank body (31), a partition plate (32) arranged in cooperation on the inner wall of the tank body (31) and separating the tank body (31) into two chambers (33) above and below, a first electromagnetic valve (34) arranged in cooperation on one side of the outer wall of the tank body (31) and communicating the two chambers (33), a gas concentration sensor (35) installed on one side of the upper end of the inner wall of the tank body (31), and a second electromagnetic valve (36) installed on the upper end of the outer wall of the tank body (31) and in communication therewith.

4. The operating room anesthetic waste gas purification and recovery apparatus as claimed in claim 1, characterized in that: The gas desorption assembly (42) comprises a vacuum tank (43), an adsorption column (44) arranged in cooperation in the vacuum tank (43), and a third electromagnetic valve (45) installed on one side of the upper end of the outer wall of the vacuum tank (43), and the adsorption column (44) is made of one or more of hydrophobic modified metal organic framework material, activated carbon fiber or high-silicon molecular sieve.

5. The operating room anesthetic waste gas purification and recovery apparatus as claimed in claim 1, characterized in that: The heating assembly (5) comprises a heat insulation sleeve (51), a heat conducting layer (52) arranged on the inner wall of the heat insulation sleeve (51), a heating wire (53) arranged between the heat insulation sleeve (51) and the heat conducting layer (52), and a heater (54) arranged on the outer wall of the heat insulation sleeve (51) and connected with the heating wire (53).

6. The operating room anesthetic waste gas purification and recovery apparatus as claimed in claim 1, characterized in that: The condensation recovery assembly (7) comprises a heat conducting pipe (71) with an open lower end, a thermostat refrigerator (72) arranged on the outer wall of the heat conducting pipe (71), a spiral condensing pipe (73) arranged on the inner wall of the heat conducting pipe (71), a fixed cover (74) arranged in the heat conducting pipe (71) and communicated with the lower end of the spiral condensing pipe (73), an exhaust pipe (75) communicated with one side of the upper end of the fixed cover (74) and extending out of the heat conducting pipe (71), a cold trap recovery bottle (76) detachably connected with the fixed cover (74), and a heat preservation cover (77) detachably connected with the open end of the heat conducting pipe (71) and used for covering the cold trap recovery bottle (76).

7. The operating room anesthetic waste gas purification and recovery apparatus of claim 6, wherein: The support frame (1) is provided with a heat dissipation assembly (82) at the position of the hot end of the thermostat refrigerator (72).

8. The operating room anesthetic waste gas purification and recovery apparatus according to claim 7, characterized by: The heat dissipation assembly (82) comprises a fixed frame (83) and a plurality of silent fans (84) mounted in the fixed frame (83).

9. The operating room anesthetic waste gas purification and recovery apparatus of claim 6, wherein: The support frame (1) is provided with a tail gas fine filter (85) communicated with the rear end of the exhaust pipe (75).

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