Anesthetic gas purification device and method for clinical anesthesia

Abstract

The invention discloses an anesthetic gas purification device and method for clinical anesthesia, and relates to the technical field of clinical medical gas purification, the anesthetic gas purification device comprises a gas inlet pipe and a condensation drying module communicated with the gas inlet pipe, and further comprises a gas guide pipe communicated with the condensation drying module and a purification module communicated with the gas guide pipe; the bottom of the purification module fixedly communicates with an air outlet pipe, and the purification module comprises a shell, honeycomb activated carbon, a first purification assembly and a second purification assembly, the anesthetic gas purification device has the advantages that waste gas is pretreated through the condensation drying module, and a high-quality adsorption working condition is created; primary efficient adsorption is realized through hexagonal through hole honeycomb activated carbon, and contact between waste gas and an adsorption material is enhanced by matching with a vibration assembly; the stirring structure enables active carbon particles to keep dynamic, and the fine adsorption effect is improved; and finally, trace waste gas is deeply decomposed through the catalysis unit, so that the overall purification efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of clinical medical gas purification technology, and in particular to a device and method for purifying anesthetic gases used in clinical anesthesia. Background Technology

[0002] In the clinical diagnosis and treatment of anesthesia, inhaled anesthetics are the core agents to ensure surgical safety and reduce patient suffering. However, their use generates a large amount of anesthetic waste gas. If this waste gas is directly discharged into the operating room environment, it will not only cause damage to the nervous and respiratory systems of medical staff who are exposed for a long time, but also, because some anesthetic gases have extremely high global warming potential, anesthetic gas purification devices have become an essential auxiliary equipment in clinical anesthesia. Their purification efficiency and operational stability are directly related to the occupational health of medical staff, the safety of patient diagnosis and treatment, and the protection of the ecological environment.

[0003] Currently, activated carbon adsorption is the mainstream method for anesthetic gas purification in clinical practice. This method is widely used in various anesthetic waste gas treatment scenarios due to its advantages such as simple equipment structure, low initial investment cost, and fast adsorption rate. CN114558394B discloses an anesthetic gas purification device for clinical use in anesthesiology departments. It uses an activated carbon plate in a central ring in conjunction with a HEPA filter to filter and purify anesthetic gases. A fragrance-enhancing plate is also added to improve gas comfort. However, this device still relies on single activated carbon adsorption, resulting in low adsorption efficiency. Furthermore, it lacks any saturation warning or secondary pollution control structures, failing to meet the needs of long-term stable clinical use. Therefore, CN217745299U discloses a disposable anesthetic mixed gas adsorption and antibacterial device. Although it adds an antibacterial structure to solve the filtration problem of aerosols and harmful dust in the waste gas, it also uses a single activated carbon adsorption module, resulting in low adsorption efficiency and a probability of waste gas leakage.

[0004] Therefore, a novel anesthetic gas purification device and method for clinical anesthesia can be adopted to address the shortcomings of existing technologies. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing an anesthetic gas purification device and method for clinical anesthesia.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A clinical anesthetic gas purification device includes an inlet pipe and a condensation and drying module connected to the inlet pipe, and also includes a guide pipe connected to the condensation and drying module and a purification module connected to the guide pipe. The bottom of the purification module is fixedly connected to an exhaust pipe. The purification module includes a shell and honeycomb activated carbon, a first purification component, a second purification component, multiple sets of vibration components and a catalytic unit installed inside the shell. A flow guide is fixedly installed inside the shell. The flow guide is located between the second purification component and the first purification component. The gas passes through the honeycomb activated carbon, the first purification component, the second purification component and the catalytic unit in sequence, and is finally discharged from the exhaust pipe. The catalytic unit consists of numerous solid catalytic sheets in a meandering shape, with a gap of 0.5 millimeters between two adjacent solid catalytic sheets.

[0007] Preferably, the honeycomb activated carbon is composed of multiple sets of pleated activated carbon sheets stacked together, with numerous hexagonal through holes formed between adjacent activated carbon sheets.

[0008] Preferably, the first purification component includes a fixed plate fixedly installed at the bottom of the honeycomb activated carbon. The fixed plate has a plurality of air inlets in the middle. A rotating cylinder is rotatably installed on the fixed plate. The rotating cylinder and the fixed plate form a circular box. A partition plate is fixedly installed on the fixed plate. The partition plate divides the interior of the circular box into a first chamber, a second chamber, a third chamber, and a fourth chamber. The first chamber and the third chamber are filled with activated carbon particles. Multiple mixing mechanisms are installed on the partition plate. Each mixing mechanism is located in the first chamber.

[0009] Preferably, the hybrid mechanism includes a spiral rod fixedly mounted on a partition plate, a spiral sleeve helically mounted on the spiral rod, a spiral blade fixedly mounted on the spiral sleeve, a rotating block rotatably mounted inside the spiral sleeve, a return spring fixedly mounted between the rotating block and the spiral rod, and a drive structure cooperating with the spiral sleeve installed inside the outer shell.

[0010] Preferably, the drive structure includes a motor fixedly installed inside the housing, a hollow cylinder rotatably installed inside the housing, a gear ring fixedly installed on the hollow cylinder, a gear meshing with the gear ring fixedly installed at the drive end of the motor, a fixed connection between the rotating cylinder and the hollow cylinder, a fan-shaped magnetic plate fixedly installed at the bottom of the rotating cylinder, and a magnetic ring with opposite magnetism to the magnetic plate fixedly installed at the bottom of the spiral sleeve.

[0011] Preferably, the vibration assembly includes a support shaft fixedly mounted on the housing, a swing arm rotatably mounted on the support shaft, a spring coil fixedly mounted between the swing arm and the support shaft, and a paddle that cooperates with the swing arm fixedly mounted on the flow guide.

[0012] Preferably, the second purification component includes a frame fixedly installed inside the outer shell, on which a plurality of storage cylinders are fixedly installed. Each storage cylinder is filled with activated carbon particles. The top of the storage cylinder has a conical hole, and the bottom is covered with a mesh cover. A disturbance mechanism is installed inside the storage cylinder.

[0013] Preferably, the disturbance mechanism includes a shaft rotatably mounted on the storage cylinder, the shaft passing through and extending out of the top of the storage cylinder, a disturbance plate fixedly mounted on the shaft, the disturbance plate being located inside the storage cylinder, and a transmission structure being installed between the rotating cylinder and the shaft.

[0014] Preferably, a rotating shaft is fixedly installed at the bottom of the rotating cylinder, and an incomplete rubber disc is fixedly installed on the rotating shaft. A circular rubber disc is fixedly installed at the top of each shaft, and each circular rubber disc only abuts against another corresponding circular rubber disc. The incomplete rubber disc cooperates with the two circular rubber discs located in the middle.

[0015] The present invention also provides a method for purifying anesthetic gases used in clinical anesthesia, comprising the above-mentioned anesthetic gas purification device for clinical anesthesia, and further comprising the following steps: S1. First, the waste anesthetic gas is introduced into the inlet pipe. Under pressure, the anesthetic gas in the inlet pipe enters the condensation and drying module to perform low-temperature condensation of the anesthetic liquid droplets entrained in the anesthetic gas and to recover the condensed anesthetic liquid droplets. Then, the particulate matter is filtered through a medical-grade HEPA filter, and finally, the moisture in the anesthetic gas is removed through a silica gel drying layer. After pretreatment, the exhaust gas humidity is ≤30%, with no particulate matter or drug residue, providing optimal working conditions for activated carbon adsorption. S2. Subsequently, the anesthetic gas will enter the interior of the shell through the gas delivery tube, and pass through the honeycomb activated carbon, the first purification component and the second purification component in sequence. It will undergo preliminary adsorption and purification in the honeycomb activated carbon, then undergo the first fine adsorption and purification in the first purification component, and finally undergo the final adsorption and purification in the second purification component. S3. After the anesthetic gas is discharged from the second purification component, it will enter the catalytic unit and flow between many solid catalytic plates. The solid catalytic plates are aluminum oxide catalysts. When the anesthetic gas passes through the solid catalytic plates, it will perform secondary decomposition on the trace amounts of anesthetic waste gas that are not completely adsorbed by the activated carbon. The halogenated ethers will be decomposed into harmless carbon dioxide, water and hydrogen halides, and nitrous oxide will be decomposed into nitrogen and oxygen. Finally, the purification efficiency will exceed 98%, which is far superior to the purification effect of traditional single activated carbon. The treated waste gas will be discharged from the outlet pipe.

[0016] Compared with existing technologies, the advantages of this invention are: 1. This anesthetic gas purification device for clinical use incorporates a condensation and drying module for pretreatment before gas purification. First, the anesthetic waste gas is condensed at low temperature to recover any entrained anesthetic drug droplets. Then, particulate matter is filtered through a medical-grade HEPA filter. Finally, moisture is removed through a silica gel drying layer, ensuring that the pretreated waste gas has a humidity of ≤30% and is free of particulate matter and drug residue. This creates optimal conditions for subsequent activated carbon adsorption, solving the problem of impurities and moisture affecting adsorption efficiency and improving the overall purification effect.

[0017] 2. This anesthetic gas purification device for clinical use uses multiple sets of pleated activated carbon sheets stacked together to form honeycomb activated carbon. Adjacent carbon sheets form numerous hexagonal through holes, which greatly increases the contact area between the activated carbon and the anesthetic waste gas. This allows the waste gas to fully pass through the through holes and come into contact with the activated carbon, achieving preliminary and efficient adsorption of harmful components in the waste gas. Compared with ordinary activated carbon structures, the adsorption contact is more complete, and the preliminary purification effect is better, laying a solid foundation for subsequent fine purification.

[0018] 3. This anesthetic gas purification device for clinical use is equipped with multiple sets of vibration components. After the waste gas is discharged through the hexagonal through hole, the rotating hollow cylinder intermittently blocks the waste gas, generating a pulse effect on the pendulum, causing it to swing. The pendulum collides with the deflector on the guide shroud to generate vibration, which is transmitted to the waste gas and the adsorption structure. The vibration makes the waste gas molecules move more violently, allowing them to come into more full contact with the adsorption material. At the same time, it reduces the retention and blockage of waste gas in the through hole, improving adsorption efficiency and material utilization.

[0019] 4. In this anesthetic gas purification device for clinical anesthesia, the rotating cylinder drives the fan-shaped magnetic plate to rotate, causing the magnetic ring to move intermittently downwards due to magnetic force. With the help of the return spring, the spiral sleeve moves up and down reciprocally. Combined with the spiral structure of the spiral rod, the spiral sleeve rotates synchronously when it moves, driving the spiral plate to stir the activated carbon particles, keeping the particles in a dynamic state, avoiding particle caking, and ensuring that the waste gas and activated carbon particles are in full contact. At the same time, the adsorption contact surface is renewed, improving the effect and uniformity of fine adsorption.

[0020] 5. This anesthetic gas purification device for clinical use incorporates a catalytic unit after multi-stage activated carbon adsorption. This unit consists of meandering alumina solid catalytic plates. The narrow gaps between the solid catalytic plates allow trace amounts of anesthetic waste gas that are not completely adsorbed by the activated carbon to pass through the gaps. The catalytic plates decompose haloethers into carbon dioxide, water, and hydrogen halides, and decompose nitrous oxide into nitrogen and oxygen, achieving a secondary deep decomposition of the waste gas. This results in an overall purification efficiency exceeding 98%, far surpassing the purification effect of traditional single activated carbon, and providing superior adsorption and purification performance. Attached Figure Description

[0021] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein: Figure 1This is a schematic diagram of the structure of an anesthetic gas purification device for clinical anesthesia proposed in this invention; Figure 2 for Figure 1 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 3 for Figure 1 Detailed enlarged structural diagram of the central purification module and the exhaust pipe; Figure 4 for Figure 3 Detailed schematic diagram of the structure after the outer shell is cut open; Figure 5 for Figure 4 Detailed schematic diagram of the structure after rotation at a certain angle; Figure 6 for Figure 4 Detailed schematic diagram of the structure after removing the outer shell and rotating it at a certain angle; Figure 7 for Figure 6 Detailed schematic diagram of the enlarged structure of the catalytic unit; Figure 8 for Figure 6 Detailed schematic diagram of the structure after removing the catalytic unit and separating the honeycomb activated carbon; Figure 9 for Figure 8 Detailed schematic diagram of the enlarged structure of honeycomb activated carbon; Figure 10 for Figure 8 Detailed schematic diagram of the structure after removing the honeycomb activated carbon and rotating it at a certain angle; Figure 11 for Figure 10 Detailed schematic diagram of the planar structure along one of the angles; Figure 12 for Figure 11 Only a detailed schematic diagram of one set of vibration components is retained in the diagram. Figure 13 for Figure 12 Detailed schematic diagram of the three-dimensional structure after the second purification component is removed; Figure 14 for Figure 13 Detailed schematic diagram of the structure after the rotating cylinder is cut open; Figure 15 for Figure 14 Detailed schematic diagram of the structure after removing the toothed ring, motor, and hollowed-out cylinder and rotating it at a certain angle; Figure 16 for Figure 15 Detailed schematic diagram of the structure after removing the fixing plate; Figure 17 for Figure 15 Detailed schematic diagram of the structure after removing the internal hybrid mechanism of the rotating cylinder and cutting open the rotating cylinder; Figure 18 for Figure 16 Detailed enlarged structural diagram of the hybrid mechanism after it has rotated a certain angle; Figure 19 for Figure 18 Detailed schematic diagram of the structure after the spiral sleeve is cut open; Figure 20 for Figure 10 A detailed enlarged structural diagram of the second purification component after it has been rotated at a certain angle. Figure 21 for Figure 20 A detailed enlarged schematic diagram of one of the storage cylinders and the circular rubber disc. Figure 22 for Figure 21 A detailed schematic diagram of the structure after the storage cylinder is cut open and the upper part of the storage cylinder is enlarged.

[0022] In the diagram: 1. Inlet pipe, 2. Condensation and drying module, 3. Air guide pipe, 4. Purification module, 5. Outlet pipe, 6. Outer shell, 7. Honeycomb activated carbon, 8. Second purification component, 9. Catalytic unit, 10. Vibration component, 11. Flow guide shroud, 12. Solid catalyst plate, 13. Motor, 14. Swing rod, 15. Paddle, 16. Rotating cylinder, 17. Hollow cylinder, 18. Tooth ring, 19. Partition plate, 20. Magnetic plate, 21. Incomplete rubber disc, 22. Fixed disc, 23. Air inlet, 24. Hybrid mechanism, 25. Rotating shaft, 26. First chamber, 27. Second chamber, 28. Third chamber, 29. Fourth chamber, 30. Spiral rod, 31. Spiral sleeve, 32. Spiral blade, 33. Magnetic ring, 34. Return spring, 35. Rotating block, 36. Storage cylinder, 37. Circular rubber disc, 38. Conical hole, 39. Disturbance plate. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.

[0024] Example 1: Refer to Figures 1-6 , Figures 8-22 A clinical anesthetic gas purification device includes an inlet pipe 1 and a condensation and drying module 2 connected to the inlet pipe 1, as well as a guide pipe 3 connected to the condensation and drying module 2 and a purification module 4 connected to the guide pipe 3. The bottom of the purification module 4 is fixedly connected to the air outlet pipe 5. The purification module 4 includes a shell 6 and honeycomb activated carbon 7, a first purification component, a second purification component 8, multiple sets of vibration components 10 and a catalytic unit 9 installed inside the shell 6. A flow guide hood 11 is fixedly installed inside the shell 6. The flow guide hood 11 is located between the second purification component 8 and the first purification component. The gas passes through the honeycomb activated carbon 7, the first purification component, the second purification component 8 and the catalytic unit 9 in sequence, and is finally discharged from the air outlet pipe 5. Waste anesthetic gas enters the device through the inlet pipe 1, and after pretreatment by the condensation and drying module 2, it enters the purification module 4 through the gas guide pipe 3. Inside the outer shell 6, it completes multi-stage purification along a fixed path of "honeycomb activated carbon 7 → first purification component → second purification component 8 → catalytic unit 9". Finally, the purified gas is discharged through the outlet pipe 5. The flow guide hood 11 enables precise gas flow between the first purification component and the second purification component 8, avoiding gas short circuits and stagnation. Existing technologies mostly use a single activated carbon adsorption structure with no planned gas flow path, which can easily lead to insufficient adsorption and leakage of waste gas. This device adopts a modular and graded purification structure, combined with the directional flow design of the flow guide hood 11, which allows the gas to fully contact each purification component, structurally avoiding the problem of waste gas short circuit and greatly improving the integrity of adsorption and purification. The graded structure and directional flow design allow the exhaust gas to undergo preliminary, fine, and final adsorption in sequence, gradually reducing the concentration of harmful components in the exhaust gas and laying the foundation for subsequent catalytic decomposition. The modular layout allows each purification component to perform its function, improving the overall adsorption efficiency while facilitating component maintenance and replacement, and adapting to the needs of long-term continuous clinical use.

[0025] The honeycomb activated carbon 7 is composed of multiple sets of pleated activated carbon sheets stacked together, with numerous hexagonal through holes formed between two adjacent activated carbon sheets; When the exhaust gas passes through the honeycomb activated carbon 7, it will flow along the channels of the hexagonal through holes. The three-dimensional structure of the pleated activated carbon sheet allows the exhaust gas to not only come into contact with the activated carbon on the inner wall of the through holes, but also to come into full contact with the concave and convex surfaces of the pleats. The honeycomb structure of the hexagonal through holes achieves uniform gas distribution and avoids excessively fast local gas flow. The hexagonal through-holes ensure uniform distribution of waste gas, avoiding localized overload and underutilization, and improving the utilization rate of activated carbon materials. The pleated and overlapping structural design maximizes the adsorption contact area, enabling efficient adsorption of harmful components in the initial purification stage of waste gas, reducing the load on subsequent purification components, and improving the overall adsorption efficiency of the device for waste gas.

[0026] The first purification component includes a fixed plate 22 fixedly installed at the bottom of the honeycomb activated carbon 7. The fixed plate 22 has a number of air inlets 23 in the middle. A rotating cylinder 16 is rotatably installed on the fixed plate 22. The rotating cylinder 16 and the fixed plate 22 form a circular box. A partition plate 19 is fixedly installed on the fixed plate 22. The partition plate 19 divides the interior of the circular box into a first chamber 26, a second chamber 27, a third chamber 28 and a fourth chamber 29. The first chamber 26 and the third chamber 28 are filled with activated carbon particles. A number of mixing mechanisms 24 are installed on the partition plate 19. Each mixing mechanism 24 is located in the first chamber 26.

[0027] The exhaust gas pretreated by the honeycomb activated carbon 7 enters the circular box of the first purification component evenly through the air inlet 23 of the fixed plate 22. The exhaust gas passes through the second chamber 27, the first chamber 26, the third chamber 28 and the fourth chamber 29 in sequence. The activated carbon particles in the first chamber 26 and the third chamber 28 come into contact with the exhaust gas to complete fine adsorption. The second and fourth chambers reserve space for gas flow to avoid excessive air pressure inside the chambers. The mixing mechanism 24 dynamically stirs the activated carbon particles in the first chamber 26. The air inlet 23 of the fixed plate 22 enables secondary uniform distribution of exhaust gas, avoiding direct gas flow into the chamber and causing local adsorption overload; the partitioned chamber design makes the flow path of exhaust gas more reasonable and maximizes the adsorption area of ​​activated carbon particles.

[0028] The hybrid mechanism 24 includes a spiral rod 30 fixedly installed on the partition plate 19, a spiral sleeve 31 spirally mounted on the spiral rod 30, a spiral blade 32 fixedly mounted on the spiral sleeve 31, a rotating block 35 rotatably mounted inside the spiral sleeve 31, a return spring 34 fixedly mounted between the rotating block 35 and the spiral rod 30, and a drive structure that cooperates with the spiral sleeve 31 installed inside the outer casing 6. The drive structure includes a motor 13 fixedly installed inside the housing 6, a hollow cylinder 17 rotatably installed inside the housing 6, a gear ring 18 fixedly installed on the hollow cylinder 17, a gear meshing with the gear ring 18 fixedly installed at the drive end of the motor 13, a rotating cylinder 16 fixedly connected to the hollow cylinder 17, a fan-shaped magnetic plate 20 fixedly installed at the bottom of the rotating cylinder 16, and a magnetic ring 33 with opposite magnetism to the magnetic plate 20 fixedly installed at the bottom of the spiral sleeve 31.

[0029] Motor 13 drives gear to rotate, and through the meshing transmission between gear and gear ring 18, drives hollow cylinder 17 to rotate. Hollow cylinder 17 synchronously drives rotating cylinder 16 to rotate. The rotation of rotating cylinder 16 drives bottom fan-shaped magnetic plate 20 to make circular motion. Magnetic plate 20 and magnetic ring 33 generate intermittent magnetic attraction due to opposite poles attracting each other, which drives spiral sleeve 31 to move down. The elastic tension of return spring 34 drives spiral sleeve 31 to move up, realizing the up and down reciprocating motion of spiral sleeve 31. The spiral sleeve 31 is driven to rotate up and down along the spiral rod 30. The rotation of the spiral sleeve 31 synchronously drives the spiral blade 32 to rotate, which stirs and tumbles the activated carbon particles in the first chamber 26. The rotation and agitation of the spiral plate 32 keeps the activated carbon particles in a continuous dynamic dispersion state, breaks the mass transfer boundary layer between the exhaust gas and the particles, and allows the exhaust gas to quickly and fully combine with the adsorption sites of the activated carbon particles, thereby improving the adsorption rate. The up-and-down motion trajectory allows the particles in the chamber to tumble and surge, preventing the lower particles from becoming saturated while the upper particles are not fully utilized, thus improving the overall adsorption efficiency of the chamber.

[0030] The vibration assembly 10 includes a support shaft fixedly mounted on the housing 6, a rocker arm 14 rotatably mounted on the support shaft, a spring coil fixedly mounted between the rocker arm 14 and the support shaft, and a paddle 15 cooperating with the rocker arm 14 fixedly mounted on the flow guide 11. When the hollow cylinder 17 rotates, it intermittently obstructs the exhaust gas. The resulting pulse airflow impacts the swing arm 14, causing the swing arm 14 to swing around the support shaft. The spring coil provides elastic force for the swing arm 14 to return to its original position. The swing arm 14 will repeatedly collide with the deflector 15 on the guide shroud 11, causing the deflector 15 to vibrate and transmit the vibration to the surrounding adsorption structure and exhaust gas. Vibration is transmitted to the exhaust gas, increasing the kinetic energy of the exhaust gas molecules, allowing the molecules to quickly reach the adsorption sites of activated carbon, shortening the adsorption mass transfer time, and increasing the adsorption rate. Vibration is transmitted to the adsorption structure, which can shake off the tiny particles attached to the surface of activated carbon, prevent the adsorption sites from being blocked, and ensure the effective adsorption area of ​​the adsorption material. At the same time, vibration can make the waste gas more evenly distributed inside the adsorption structure, avoid local airflow stagnation, and further improve the overall adsorption efficiency.

[0031] The second purification component 8 includes a frame fixedly installed inside the outer shell 6. Multiple storage cylinders 36 are fixedly installed on the frame. Each storage cylinder 36 is filled with activated carbon particles. The top of the storage cylinder 36 has a conical hole 38 and the bottom is wrapped with a mesh cover. A disturbance mechanism is installed inside the storage cylinder 36. The disturbance mechanism includes a shaft rotatably mounted on the storage cylinder 36, the shaft passing through and extending out of the top of the storage cylinder 36, a disturbance plate 39 fixedly mounted on the shaft, the disturbance plate 39 being located inside the storage cylinder 36, and a transmission structure being installed between the rotating cylinder 16 and the shaft; A rotating shaft 25 is fixedly installed at the bottom of the rotating cylinder 16. An incomplete rubber disc 21 is fixedly installed on the rotating shaft 25. A circular rubber disc 37 is fixedly installed at the top of each shaft. Each circular rubber disc 37 only abuts against the other corresponding circular rubber disc 37 for transmission. The incomplete rubber disc 21 cooperates with the two circular rubber discs 37 located in the middle.

[0032] The rotation of the rotating cylinder 16 drives the rotating shaft 25 to rotate synchronously, which in turn drives the incomplete rubber disc 21 to make a circular motion. When the incomplete rubber disc 21 rotates to contact one of the two central circular rubber discs 37, it drives the disc to rotate through the friction of the rubber surface. The central circular rubber disc 37 then drives the other circular rubber discs 37 to rotate through the mutual abutment transmission, ultimately achieving synchronous rotation of all shafts. The non-circular design of the incomplete rubber disc 21 makes the transmission intermittent, causing the shafts to rotate intermittently. The rotation of the shaft synchronously drives the agitator 39 inside the storage cylinder 36 to rotate. The agitator 39 stirs and tumbles the activated carbon particles inside the storage cylinder 36, keeping the particles in a dynamic dispersion state. The rotation of the disturbance plate 39 breaks the static state of the activated carbon particles, preventing them from caking and forming adsorption dead zones. This allows the exhaust gas to fully contact all the activated carbon particles in the storage cylinder 36, maximizing the utilization of the adsorption material in the storage cylinder 36. The dynamic disturbance can refresh the adsorption contact surface of the activated carbon particles, allowing unsaturated adsorption sites to continue to contact the exhaust gas, improving the adsorption efficiency and purification depth of the final adsorption stage, and reducing the load on the subsequent catalytic unit 9. The exhaust gas treated by the first purification component enters the storage cylinder 36 through the conical hole 38 at the top (the conical hole 38 can effectively increase the flow velocity of the exhaust gas). The conical hole 38 realizes the convergence and guidance of the exhaust gas, allowing the exhaust gas to accurately enter the storage cylinder 36 and contact the activated carbon particles to complete the final adsorption. The bottom mesh cover ensures that the purified gas is discharged smoothly, while preventing the loss of activated carbon particles.

[0033] Example 2: This example differs from Example 1 in that: (Refer to...) Figures 4-7 The catalytic unit 9 is composed of numerous solid catalytic sheets 12 in a meandering shape, with a gap of 0.5 mm between two adjacent solid catalytic sheets 12; After being finally adsorbed by the second purification component 8, the exhaust gas enters the catalytic unit 9 and flows along the gaps between the meandering solid catalytic plates 12. The narrow gap of 0.5 mm allows the exhaust gas to fully and closely contact the catalytic surface of the solid catalytic plates 12. The solid catalytic plates 12 catalytically decompose the trace harmful components in the exhaust gas that have not been completely adsorbed by the activated carbon, and convert them into harmless substances. The meandering solid catalytic plate 12 extends the flow path of exhaust gas within the catalytic unit 9, increasing the catalytic reaction time and ensuring that trace harmful components are fully decomposed. The narrow 0.5 mm gap allows the exhaust gas to make zero-distance contact with the catalytic surface of the catalytic plate, preventing exhaust gas from flowing through and improving the efficiency and integrity of the catalytic reaction. The catalytic unit 9 performs secondary deep treatment on the trace exhaust gas that is not adsorbed by activated carbon, making up for the shortcomings of single activated carbon adsorption, significantly improving the overall purification efficiency of the device, and enabling the treated exhaust gas to meet higher emission standards, thus protecting the health of medical personnel and reducing environmental pollution.

[0034] The specific operating steps of this device are as follows: First, the waste anesthetic gas is introduced into the inlet pipe 1. Under pressure, the anesthetic gas in the inlet pipe 1 enters the condensation and drying module 2, where the anesthetic liquid droplets entrained in the anesthetic gas are condensed at low temperature, and the condensed anesthetic liquid droplets are recovered. Then, the particulate matter is filtered through a medical-grade HEPA filter, and finally, the moisture in the anesthetic gas is removed through a silica gel drying layer. After pretreatment, the exhaust gas humidity is ≤30%, with no particulate matter or drug residue, providing optimal working conditions for activated carbon adsorption. The pretreated exhaust gas enters the outer shell 6 of the purification module 4 through the air guide pipe 3. It first flows through the honeycomb activated carbon 7: the exhaust gas flows along the hexagonal through holes formed by the overlapping of the pleated activated carbon sheets in the honeycomb activated carbon 7, and fully contacts the inner wall of the through holes and the concave and convex surfaces of the pleats to complete the initial adsorption and purification. Then the exhaust gas enters the circular box formed by the fixed plate 22 and the rotating cylinder 16 evenly through the air inlet 23 of the fixed plate 22 of the first purification component, and passes through the second chamber 27, the first chamber 26, the third chamber 28 and the fourth chamber 29 in sequence. The activated carbon particles in the first chamber 26 and the third chamber 28 will adsorb impurities in the exhaust gas. Next, the motor 13 drives the hollow cylinder 17 and the rotating cylinder 16 to rotate through the meshing of the gear and the gear ring 18. The fan-shaped magnetic plate 20 at the bottom of the rotating cylinder 16 and the magnetic ring 33 are attracted by opposite poles, which drives the spiral sleeve 31 to rotate up and down along the spiral rod 30, and simultaneously drives the spiral plate 32 to stir the activated carbon particles, so as to achieve full contact between the waste gas and the dynamically dispersed activated carbon particles, and complete the first fine adsorption purification. After fine adsorption, the waste gas enters the second purification component 8. After being converged and guided by the conical hole 38 at the top of the storage cylinder 36, it enters the cylinder. At the same time, the rotating cylinder 16 drives the incomplete rubber disc 21 to rotate through the rotating shaft 25. The friction transmission with the central circular rubber disc 37 drives all the shafts to rotate intermittently. The shafts drive the disturbance plate 39 to stir the activated carbon particles in the storage cylinder 36. The waste gas and the dynamic particles are in full contact to complete the final adsorption and purification. After the anesthetic gas is discharged from the second purification component 8, it enters the catalytic unit 9 and flows between numerous solid catalytic plates 12. The solid catalytic plates 12 are aluminum oxide catalysts. When the anesthetic gas passes through the solid catalytic plates 12, it will perform secondary decomposition on the trace amounts of anesthetic waste gas that were not completely adsorbed by the activated carbon. The halogenated ethers are decomposed into harmless carbon dioxide, water and hydrogen halides, and nitrous oxide is decomposed into nitrogen and oxygen. Finally, the purification efficiency exceeds 98%, which is far superior to the purification effect of traditional single activated carbon. The treated waste gas is discharged from the exhaust pipe 5.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A clinical anesthetic gas purification device, comprising an inlet pipe (1) and a condensation and drying module (2) connected to the inlet pipe (1), characterized in that, It also includes a gas duct (3) connected to the condensation drying module (2) and a purification module (4) connected to the gas duct (3). The bottom of the purification module (4) is fixedly connected to the air outlet pipe (5). The purification module (4) includes a shell (6) and honeycomb activated carbon (7), a first purification component, a second purification component (8), multiple sets of vibration components (10) and a catalytic unit (9) installed inside the shell (6). A flow guide hood (11) is fixedly installed inside the shell (6). The flow guide hood (11) is located between the second purification component (8) and the first purification component. The gas passes through the honeycomb activated carbon (7), the first purification component, the second purification component (8) and the catalytic unit (9) in sequence, and is finally discharged from the air outlet pipe (5). The catalytic unit (9) is composed of a number of serpentine solid catalytic sheets (12), with a gap of 0.5 mm between two adjacent solid catalytic sheets (12).

2. The anesthetic gas purification device for clinical anesthesia according to claim 1, characterized in that, The honeycomb activated carbon (7) is composed of multiple sets of pleated activated carbon sheets stacked together, with numerous hexagonal through holes formed between adjacent activated carbon sheets.

3. The anesthetic gas purification device for clinical anesthesia according to claim 1, characterized in that, The first purification component includes a fixed plate (22) fixedly installed at the bottom of the honeycomb activated carbon (7). The fixed plate (22) has a number of air inlets (23) in the middle. A rotating cylinder (16) is rotatably installed on the fixed plate (22). The rotating cylinder (16) and the fixed plate (22) form a circular box. A partition plate (19) is fixedly installed on the fixed plate (22). The partition plate (19) divides the interior of the circular box into a first chamber (26), a second chamber (27), a third chamber (28), and a fourth chamber (29). The first chamber (26) and the third chamber (28) are filled with activated carbon particles. A number of mixing mechanisms (24) are installed on the partition plate (19). Each of the mixing mechanisms (24) is located in the first chamber (26).

4. The anesthetic gas purification device for clinical anesthesia according to claim 3, characterized in that, The hybrid mechanism (24) includes a spiral rod (30) fixedly installed on a partition plate (19), a spiral sleeve (31) is spirally mounted on the spiral rod (30), a spiral blade (32) is fixedly mounted on the spiral sleeve (31), a rotating block (35) is rotatably mounted inside the spiral sleeve (31), a return spring (34) is fixedly mounted between the rotating block (35) and the spiral rod (30), and a drive structure that cooperates with the spiral sleeve (31) is installed inside the outer shell (6).

5. The anesthetic gas purification device for clinical anesthesia according to claim 4, characterized in that, The drive structure includes a motor (13) fixedly installed inside the housing (6), a hollow cylinder (17) rotatably installed inside the housing (6), a gear ring (18) fixedly installed on the hollow cylinder (17), a gear meshing with the gear ring (18) fixedly installed at the drive end of the motor (13), a rotating cylinder (16) fixedly connected to the hollow cylinder (17), a fan-shaped magnetic plate (20) fixedly installed at the bottom of the rotating cylinder (16), and a magnetic ring (33) with opposite magnetism to the magnetic plate (20) fixedly installed at the bottom of the spiral sleeve (31).

6. The anesthetic gas purification device for clinical anesthesia according to claim 5, characterized in that, The vibration assembly (10) includes a support shaft fixedly mounted on the housing (6), a swing arm (14) rotatably mounted on the support shaft, a spring coil fixedly mounted between the swing arm (14) and the support shaft, and a paddle (15) cooperating with the swing arm (14) fixedly mounted on the flow guide (11).

7. The anesthetic gas purification device for clinical anesthesia according to claim 5, characterized in that, The second purification component (8) includes a frame fixedly installed inside the outer shell (6), on which a plurality of storage cylinders (36) are fixedly installed. Each storage cylinder (36) is filled with activated carbon particles. The top of the storage cylinder (36) is provided with a conical hole (38), and the bottom is covered with a mesh cover. A disturbance mechanism is installed inside the storage cylinder (36).

8. The anesthetic gas purification device for clinical anesthesia according to claim 7, characterized in that, The disturbance mechanism includes a shaft rotatably mounted on the storage cylinder (36), the shaft passing through and extending out of the top of the storage cylinder (36), a disturbance piece (39) fixedly mounted on the shaft, the disturbance piece (39) being located inside the storage cylinder (36), and a transmission structure being installed between the rotating cylinder (16) and the shaft.

9. The anesthetic gas purification device for clinical anesthesia according to claim 8, characterized in that, The bottom of the rotating cylinder (16) is fixedly installed with a rotating shaft (25), and an incomplete rubber disc (21) is fixedly installed on the rotating shaft (25). A circular rubber disc (37) is fixedly installed on the top of each shaft. Each circular rubber disc (37) only abuts against the other corresponding circular rubber disc (37) for transmission. The incomplete rubber disc (21) cooperates with the two circular rubber discs (37) located in the middle.

10. A method for purifying anesthetic gases used in clinical anesthesia, comprising the anesthetic gas purification device for clinical anesthesia as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. First, the waste anesthetic gas is introduced into the inlet pipe (1). Under pressure, the anesthetic gas in the inlet pipe (1) enters the condensation and drying module (2) to condense the anesthetic liquid droplets entrained in the anesthetic gas at low temperature and to recover the condensed anesthetic liquid droplets. Then, the particulate matter is filtered through a medical-grade HEPA filter, and finally, the moisture in the anesthetic gas is removed through a silica gel drying layer. After pretreatment, the humidity of the exhaust gas is ≤30%, with no particulate matter or drug residue, providing optimal working conditions for activated carbon adsorption. S2. Subsequently, the anesthetic gas will enter the interior of the outer shell (6) through the gas delivery tube (3), and pass through the honeycomb activated carbon (7), the first purification component and the second purification component (8) in sequence. It will undergo preliminary adsorption and purification in the honeycomb activated carbon (7), then undergo the first fine adsorption and purification in the first purification component, and finally undergo the final adsorption and purification in the second purification component (8). S3. After the anesthetic gas is discharged from the second purification component (8), it will enter the catalytic unit (9) and flow between many solid catalytic plates (12). The solid catalytic plates (12) are aluminum oxide catalysts. When the anesthetic gas passes through the solid catalytic plates (12), it will decompose the trace amount of anesthetic waste gas that has not been completely adsorbed by the activated carbon. The haloethers will be decomposed into harmless carbon dioxide, water and hydrogen halides, and nitrous oxide will be decomposed into nitrogen and oxygen. Finally, the purification efficiency will exceed 98%, which is far superior to the purification effect of traditional single activated carbon. The treated waste gas will be discharged from the outlet pipe (5).

Images