Waste anesthetic gas extraction device for anesthesiology department

Abstract

The invention discloses an anesthetic waste gas extraction device for an anesthesia department, and belongs to the technical field of anesthesia, the anesthetic waste gas extraction device comprises an air pump, one end of the air pump is connected with a waste gas purification device, the other end of the air pump is connected with an extraction pipe, and the end part of the extraction pipe is connected with a suction head; the waste gas purification device comprises a base, a purification box, an ultrasonic jet flow type reaction mechanism, a condensation mechanism and a self-replacement type filtering mechanism, the purification box is arranged on the base, the ultrasonic jet flow type reaction mechanism and the condensation mechanism are arranged in the purification box, a filtering position is arranged on one side of the purification box, and the self-replacement type filtering mechanism is arranged at the filtering position. The ultrasonic jet flow type reaction mechanism, the condensation mechanism and the self-replacement type filtering mechanism are sequentially communicated. According to the anesthetic waste gas extraction device for the anesthesiology department, the anesthetic waste gas is fully treated through the combination of reaction liquid and activated carbon adsorption, and automatic replacement of the activated carbon filter element can be achieved.

Description

Technical Field

[0001] The invention belongs to the field of anesthesia technology, and specifically refers to an anesthetic waste gas extraction device for an anesthesia department. Background Art

[0002] At present, the waste gas of anesthesia machines used in clinical practice is usually discharged directly into the anesthesia operating room during the anesthesia process. Once the anesthetic waste gas is inhaled by the patient for the second time, it will affect the inhalation dose of the anesthetic. It is also easy to be inhaled by the medical staff in the operating room, affecting the normal work of the medical staff. Therefore, it is very necessary to clean up the anesthetic waste gas during the anesthesia process in time.

[0003] When working in the anesthesia department, anesthetic waste gas will be produced, which needs to be removed in time to avoid affecting the environment and medical staff. When the existing equipment works in a relatively closed department environment, the extracted anesthetic waste gas stays in the reaction liquid for a short time, the reaction is not sufficient, and there is easily residue in the exhausted gas, and the equipment's working efficiency is low. For this reason, an anesthetic waste gas extraction device is designed for the anesthesia department to solve the above-mentioned problems. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an anesthetic waste gas extraction device for anesthesia departments, which fully treats the anesthetic waste gas by combining the reaction liquid with activated carbon adsorption, and can realize automatic replacement of the activated carbon filter element.

[0005] The technical solution adopted by the present invention is as follows: The present invention provides an anesthetic waste gas extraction device for an anesthesia department, including a vacuum pump, one end of the vacuum pump is connected to a waste gas purification device, the other end of the vacuum pump is connected to an extraction pipe, the end of the extraction pipe is connected to a suction head, the waste gas purification device includes a base, a purification box, an ultrasonic jet reaction mechanism, a condensation mechanism and a self-replaceable filter mechanism, the purification box is arranged on the base, the ultrasonic jet reaction mechanism and the condensation mechanism are arranged in the purification box, a filter position is arranged on one side of the purification box, the self-replaceable filter mechanism is arranged at the filter position, and the ultrasonic jet reaction mechanism, the condensation mechanism and the self-replaceable filter mechanism are connected in sequence.

[0006] The ultrasonic jet reaction mechanism comprises a reaction tube, an ultrasonic generating assembly, a multi-stage delay guide assembly and a jet tube. The ultrasonic generating assembly is arranged on the bottom wall of the purification box, the reaction tube is arranged above the ultrasonic generating assembly, the upper end of the reaction tube is threadedly sealed and connected with a tube cover, the lower end of the jet tube penetrates the central axis of the tube cover and extends downward into the reaction tube, the upper end of the jet tube is connected to the output end of the vacuum pump by a pipeline, the tube cover is fixedly penetrated with an air outlet pipe, and the air outlet pipe is connected to the cooling The multi-stage delay guide assembly is coaxially arranged in the reaction tube, a jet channel is penetrated from top to bottom in the middle of the multi-stage delay guide assembly, the jet tube is penetrated in the jet channel, a conical diverter is coaxially installed on the bottom wall of the reaction tube, the jet tube is arranged just above the conical diverter, a one-way valve is arranged on the jet tube, an annular transition ramp is connected between the conical diverter and the circumferential side wall of the reaction tube, and the conical diverter, the annular transition ramp and the reaction tube are smoothly transitioned.

[0007] The anesthetic waste gas is sprayed to the conical diverter in the form of a jet through the jet tube. The conical diverter scatters and diverts the sprayed airflow. On the one hand, the gas jet will break into bubbles of different sizes after entering the liquid, and produce a strong stirring effect on the surrounding liquid. On the other hand, when the jet hits the surface of the cone, scattering will occur, and the airflow will disperse to the surroundings to form a scattered fluid area, so that the gas and the reaction liquid are in uniform contact, and when the jet impacts the cone, a large number of tiny cavitation bubbles may be rapidly formed near the impact point. At the same time, with the ultrasonic generating component, the energy of the ultrasonic wave can make the movement of liquid molecules more intense, reduce the surface tension and local pressure of the liquid, thereby reducing the energy threshold required for the jet to generate bubbles, so that more bubbles can be generated even when the jet energy is relatively low. Bubbles can increase the contact area between gas and liquid, which helps to improve the reaction rate and efficiency. The gas in the form of bubbles reacts in the liquid, which can reduce the escape and waste of gas, because the bubbles stay in the liquid for a longer time and the gas utilization rate is higher.

[0008] Furthermore, the multi-stage delay guide assembly includes a forward delay guide and a reverse delay guide, the forward delay guide and the reverse delay guide are distributed in an axially spaced array along the reaction tube, the forward delay guide and the reverse delay guide are tightly fitted, the forward delay guide includes a coaxially arranged forward outer ring, a forward inner ring, and a forward conical ring plate coaxially connected between the forward inner ring and the forward outer ring, a vent hole 1 is provided at the upper end of the side wall of the forward conical ring plate, and the vent hole 1 is distributed in an array around the circumference of the forward inner ring, the reverse delay guide includes a coaxially arranged reverse outer ring, a reverse inner ring, and an inverted cone coaxially connected between the reverse inner ring and the reverse outer ring The inverted conical ring plate is provided with a second vent hole at the upper end of the side wall of the inverted conical ring plate, and the second vent holes are distributed in a circular array around the reverse outer ring. The gas-liquid mixed fluid scattered and diverted along the conical diverter is guided to the bottom wall of the positive conical ring plate through the annular transition ramp, and flows upward along the positive conical ring plate, flows to the bottom of the inverted conical ring plate through the first vent hole, and then flows upward along the inverted conical ring plate to the second vent hole, and flows to the next positive delay guide through the second vent hole. After being blocked and guided by multiple layers of positive delay guides and reverse delay guides, the retention time of the anesthetic waste gas in the reaction liquid can be prolonged, and the reaction time of the anesthetic waste gas and the reaction liquid can be increased, so that the anesthetic waste gas and the reaction liquid can fully react.

[0009] Preferably, sealing gaskets are provided on the upper and lower sides of the forward delay guide member and the upper and lower sides of the reverse delay guide member, respectively.

[0010] Preferably, an annular baffle is coaxially fixedly provided in the reaction cylinder, a pressure ring is provided on the bottom wall of the cylinder cover, the multi-stage delay guide assembly is pressed between the pressure ring and the annular baffle, and the annular baffle is provided above the conical diverter and the annular transition ramp.

[0011] Furthermore, the ultrasonic generating component includes an ultrasonic generator and an ultrasonic transducer. The bottom end of the reaction tube is connected to an ultrasonic generating cavity. The ultrasonic generator and ultrasonic transducer are arranged in the ultrasonic generating cavity. The ultrasonic transducer is arranged at the bottom end of the reaction tube, and the ultrasonic transducer is electrically connected to the ultrasonic generator.

[0012] Preferably, the extraction pipe is a gooseneck hose that can be bent and shaped arbitrarily.

[0013] Wherein, the self-replaceable filter mechanism comprises a filter bracket, a fixed tube, a sliding tube, a filter tube, a pressure trigger mechanism and a sliding push mechanism, the filter bracket is arranged on a base, a mounting plate is arranged on the upper end of the filter bracket, the fixed tube is fixedly arranged on the wall of the mounting plate, an inverted L-shaped pull-out rod is arranged on the upper end of the fixed tube, the end of the fixed tube away from the sliding tube is closed, a transmission hose is arranged between the end of the fixed tube away from the sliding tube and the air outlet end of the condensation mechanism, an inverted L-shaped pull-out sleeve is arranged on the upper end of the sliding tube, and the sliding tube is through-arranged from front to back, The inverted L-shaped pull-out rod is slidably arranged in the inverted L-shaped pull-out sleeve, and the sliding tube is slidably arranged on one side of the fixed tube through the inverted L-shaped pull-out sleeve and the inverted L-shaped pull-out rod. The filter tube is pressed between the fixed tube and the sliding tube, and the sliding push mechanism is arranged on the mounting plate. The pressure trigger mechanism is arranged on one side of the fixed tube, and the pressure trigger mechanism is electrically connected to the sliding push mechanism. Splicing female parts and splicing male parts are respectively provided on both sides of the filter tube. Any two filter tubes can be spliced ​​and assembled together by splicing female parts and splicing male parts. An activated carbon filter element is provided in the filter tube.

[0014] Furthermore, the sliding push mechanism includes an electric push rod, a sliding push plate, a sliding connecting rod and a translation slide plate. The upper wall of the mounting plate is provided with a replacement slide rail, and the replacement slide rail is arranged perpendicular to the sliding direction of the sliding tube. The upper wall of the mounting plate is provided with a fixed baffle, and the fixed baffle is arranged on one side of the fixed tube. The translation slide plate is slidably arranged in the replacement slide rail, and the translation slide plate is arranged below the sliding tube. A push slide groove is provided on the translation slide, and a push slide shaft is provided at the bottom end of the sliding tube. The push slide shaft is slidably clamped in the push slide groove, and the push slide groove includes a connected oblique slide groove and a parallel slide groove, and the parallel slide groove is arranged parallel to the replacement slide rail. The oblique slide groove is inclined at one end of the parallel slide groove close to the fixed baffle plate, the mounting plate is penetrated by a push slide hole, the electric push rod is arranged on the bottom wall of the mounting plate, the end of the electric push rod is provided with an actuator plate, the actuator plate is arranged at one end of the electric push rod away from the fixed baffle plate, the sliding connecting rod is arranged at the upper end of the actuator plate, the sliding connecting rod penetrates the push slide hole, the sliding push plate is arranged at the upper end of the sliding connecting rod and is arranged above the mounting seat, the sliding push plate is connected to the translation slide plate, the length of the parallel slide groove is greater than or equal to the width of the filter tube, in the initial state, the push slide shaft is located at the end of the oblique slide groove away from the parallel slide groove, at this time the sliding tube, the filter tube and the fixed tube are tightly When the filter is pressed together, there is a certain distance between the sliding push plate and the spare filter tube. As the electric push rod contracts, the electric push rod drives the sliding push plate to approach the fixed tube through the actuator plate and the sliding connecting rod. The sliding push plate drives the translation slide plate to slide along the replacement slide rail and approach the fixed baffle. The translation slide plate drives the oblique slide groove to slide relative to the push slide shaft. When the oblique slide groove moves, the sliding tube is driven by the push slide shaft to move axially away from the old filter tube and the fixed tube. The inverted L-shaped pull-out sleeve and the inverted L-shaped pull-out rod limit the sliding tube so that it can only slide axially. When the push slide shaft moves from the oblique slide groove to the parallel slide groove, the sliding push plate fits against the side wall of the spare filter tube, and as the electric The push rod continues to retract, and the sliding push plate pushes the translational slide plate and the spare filter tube to move synchronously close to the fixed baffle. The translational slide plate drives the parallel slide groove to slide relative to the push slide shaft. The spare filter tube pushes the old filter tube to move close to the fixed baffle until the old filter tube is tightly fitted with the fixed baffle. The electric push rod stops retracting. At this time, the spare filter tube is axially aligned with the sliding tube and the fixed tube. The electric push rod is controlled to extend and reset again. When the oblique slide groove slides close to the push slide shaft, the oblique slide groove pushes the sliding tube to slide axially close to the fixed tube through the push slide shaft, so that the spare filter tube is pressed between the fixed tube and the sliding tube, thereby realizing rapid and automatic replacement of the filter tube.

[0015] Preferably, the bottom wall and side walls of the filter tube are respectively provided with sliding magnets, the side walls of the fixed baffle and the bottom wall of the mounting plate are respectively provided with fixed magnets, and the fixed magnet of the bottom wall of the mounting plate is arranged between the sliding tube and the fixed tube, so that the filter tube can be positioned conveniently by means of the sliding magnets and the fixed magnets.

[0016] Furthermore, the pressure trigger mechanism includes a piston cylinder, a piston, a push spring, a pressure sensor and a controller. The piston cylinder is arranged on one side of the fixed tube, the piston cylinder is connected to the fixed tube, the piston is slidably arranged in the piston cylinder, the push spring is arranged between the piston cylinder and the piston and pushes the piston to move toward the fixed tube, the pressure sensor is arranged at one end of the piston cylinder away from the fixed tube, and a trigger rod is provided on the side of the piston close to the pressure sensor. The controller is arranged on the side wall of the fixed tube, and the controller is electrically connected to the pressure sensor and the electric push rod respectively.

[0017] Preferably, the splicing mother part includes an L-shaped rail symmetrically arranged on one side of the filter tube, and the splicing male part includes a guide rail, a clamping rod and a spring. The guide rail is arranged on the side wall of the filter tube away from the splicing mother part, and a splicing slider is symmetrically slidably provided in the guide rail. The clamping rods are respectively arranged on the splicing sliders, and the spring is arranged between the two clamping rods. The two filter tubes can be quickly spliced ​​together by quickly clamping the clamping rod into the L-shaped rail.

[0018] As a further improvement of the present invention, a positioning hole is provided through the side wall of the L-shaped rail, and a wedge block is provided on the side of the clamping rod close to the L-shaped rail, through which the two filter tubes can be quickly aligned.

[0019] The beneficial effects achieved by the present invention using the above structure are as follows: 1. A jet tube and a conical diverter are arranged in the reaction tube. The anesthetic waste gas is sprayed to the conical diverter in the form of a jet through the jet tube. The conical diverter scatters and diverts the sprayed airflow so that the airflow is evenly distributed in the reaction liquid. At the same time, the gas jet will break into bubbles of different sizes after entering the liquid, and when the jet impacts the conical part, a large number of tiny cavitation bubbles may be quickly formed near the impact point. The bubbles can increase the contact area between the gas and the liquid, which helps to improve the reaction rate and efficiency. The gas in the form of bubbles reacts in the liquid, which can reduce the escape and waste of the gas, because the bubbles stay in the liquid for a longer time and the gas utilization rate is higher.

[0020] 2. An ultrasonic generating assembly is set at the bottom of the reaction tube, which cooperates with the jet tube and the conical diverter. The energy of the ultrasonic wave can make the movement of liquid molecules more violent, reduce the surface tension and local pressure of the liquid, and thus reduce the energy threshold required for the jet to generate bubbles, so that more bubbles can be generated even when the jet energy is relatively low.

[0021] 3. The multi-stage delay guide assembly reversely guides the rising air bubbles through the positive cone ring plate and the inverted cone ring plate, prolongs the retention time of the anesthetic waste gas in the reaction liquid, increases the reaction time of the anesthetic waste gas and the reaction liquid, and allows the anesthetic waste gas to fully react with the reaction liquid.

[0022] 4. The sliding mechanism is activated by air pressure. With the help of the oblique slide groove and the sliding shaft, the fixed tube, the sliding tube and the filter tube can be automatically separated and pressed together. With the help of the sliding push plate, the filter tube can be quickly and automatically replaced.

[0023] 5. The splicing female parts and the splicing male parts facilitate the quick assembly of two filter tubes and quick alignment, which facilitates the automatic replacement of filter tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of an anesthetic waste gas extraction device for an anesthesia department provided by the present invention; Figure 2 A schematic structural diagram of another perspective of an anesthetic waste gas extraction device for an anesthesia department provided by the present invention; Figure 3 A schematic diagram of the structure of a waste anesthetic gas extraction device for anesthesia department provided by the present invention without a purification box; Figure 4 A schematic diagram of the structure of the ultrasonic jet reaction mechanism provided by the present invention; Figure 5 A cross-sectional view of the ultrasonic jet reaction mechanism provided by the present invention; Figure 6 An exploded view of the forward delay guide member and the reverse delay guide member provided by the present invention; Figure 7 A schematic diagram of the structure of the self-replaceable filter mechanism provided by the present invention; Figure 8 A structural schematic diagram of the self-replaceable filter mechanism provided by the present invention from another perspective; Fig. 9 A schematic diagram of the combined structure of the sliding mechanism, the filter support and the mounting plate provided by the present invention; Fig.10 An exploded view of the fixed tube, the sliding tube and the filter tube provided by the present invention; Fig.11 A cross-sectional view of a fixed tube and a pressure trigger mechanism provided by the present invention; Fig.12 A schematic diagram of the structure of the filter tube provided by the present invention; Fig.13 A schematic structural diagram of the filter tube provided by the present invention from another perspective; Fig.14 A schematic diagram of the combined structure of the electric push rod, the sliding push plate, the execution plate, the sliding connecting rod and the translation slide provided by the present invention; Fig.15 This is a schematic diagram of the combined structure of the fixed baffle, the filter bracket and the mounting plate provided by the present invention.

[0025] Among them, 1. vacuum pump, 2. exhaust gas purification device, 3. extraction pipe, 4. suction head, 5. base, 6. purification box, 7. ultrasonic jet reaction mechanism, 8. condensation mechanism, 9. self-replacement filter mechanism, 10. reaction cylinder, 11. ultrasonic generating assembly, 12. multi-stage delay guide assembly, 13. jet tube, 14. cylinder cover, 15. outlet pipe, 16. jet channel, 17. conical diverter, 18. one-way valve, 19. ring shaped transition ramp, 20, positive delay guide, 21, reverse delay guide, 22, positive outer ring, 23, positive inner ring, 24, positive conical ring plate, 25, vent hole 1, 26, reverse outer ring, 27, reverse inner ring, 28, inverted conical ring plate, 29, vent hole 2, 30, sealing gasket, 31, annular baffle, 32, pressure ring, 33, ultrasonic generator, 34, ultrasonic transducer, 35, ultrasonic generating cavity, 36, Filter bracket, 37, fixed tube, 38, sliding tube, 39, filter tube, 40, pressure trigger mechanism, 41, sliding push mechanism, 42, mounting plate, 43, inverted L-shaped pull sleeve, 44, inverted L-shaped pull rod, 45, splicing mother part, 46, splicing male part, 47, activated carbon filter element, 48, electric push rod, 49, sliding push plate, 50, sliding connecting rod, 51, translation slide plate, 52, replacement of slide rail, 53, fixed baffle, 54. Push slide shaft, 55. Oblique slide groove, 56. Parallel slide groove, 57. Push slide hole, 58. Actuator plate, 59. Piston cylinder, 60. Piston, 61. Push spring, 62. Pressure sensor, 63. Controller, 64. Trigger rod, 65. L-shaped rail, 66. Guide rail, 67. Rod, 68. Spring, 69. Splicing slider, 70. Positioning hole, 71. Wedge block, 72. Sliding magnet, 73. Fixed magnet.

[0026] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0029] like Figure 1-Figure 15 As shown, the present invention provides an anesthetic waste gas extraction device for an anesthesia department, comprising a vacuum pump 1, one end of the vacuum pump 1 is connected to a waste gas purification device 2, the other end of the vacuum pump 1 is connected to a extraction pipe 3, the end of the extraction pipe 3 is connected to a suction head 4, the waste gas purification device 2 comprises a base 5, a purification box 6, an ultrasonic jet reaction mechanism 7, a condensation mechanism 8 and a self-replaceable filter mechanism 9, the purification box 6 is arranged on the base 5, the ultrasonic jet reaction mechanism 7 and the condensation mechanism 8 are arranged in the purification box 6, a filtering position is provided on one side of the purification box 6, the self-replaceable filter mechanism 9 is arranged at the filtering position, the ultrasonic jet reaction mechanism 7, the condensation mechanism 8 and the self-replaceable filter mechanism 9 are connected in sequence, the condensation mechanism 8 is a prior art and will not be repeated here.

[0030] In some embodiments, the extraction tube 3 is a gooseneck hose that can be bent and shaped arbitrarily.

[0031] The ultrasonic jet reaction mechanism 7 includes a reaction tube 10, an ultrasonic generating assembly 11, a multi-stage delay guide assembly 12 and a jet tube 13. The ultrasonic generating assembly 11 is arranged on the inner bottom wall of the purification box 6, and the reaction tube 10 is arranged above the ultrasonic generating assembly 11. The upper end of the reaction tube 10 is threadedly sealed and connected with a tube cover 14. The lower end of the jet tube 13 penetrates the central axis of the tube cover 14 and extends downward into the reaction tube 10. The upper end of the jet tube 13 is connected to the output end of the vacuum pump 1 by a pipeline. The tube cover 14 is fixedly penetrated with an air outlet pipe 15, and the air outlet pipe 15 is connected to the condensation mechanism. 8 is connected to the air inlet end, the multi-stage delay guide component 12 is coaxially arranged in the reaction tube 10, the middle part of the multi-stage delay guide component 12 is penetrated by a jet channel 16 from top to bottom, the jet tube 13 is penetrated in the jet channel 16, a conical diverter 17 is coaxially installed on the inner bottom wall of the reaction tube 10, the jet tube 13 is arranged just above the conical diverter 17, a one-way valve 18 is provided on the jet tube 13, an annular transition ramp 19 is connected between the conical diverter 17 and the circumferential side wall of the reaction tube 10, and the conical diverter 17, the annular transition ramp 19 and the reaction tube 10 are smoothly transitioned.

[0032] An annular baffle 31 is coaxially fixedly provided inside the reaction tube 10 , a pressure ring 32 is provided on the bottom wall of the tube cover 14 , the multi-stage delay guide assembly 12 is pressed between the pressure ring 32 and the annular baffle 31 , and the annular baffle 31 is provided above the conical diverter 17 and the annular transition ramp 19 .

[0033] The multi-stage delay guide assembly 12 includes a forward delay guide 20 and a reverse delay guide 21, which are distributed in an axially spaced array along the reaction tube 10, and the forward delay guide 20 and the reverse delay guide 21 are tightly fitted, and the forward delay guide 20 includes a coaxially arranged forward outer ring 22, a forward inner ring 23, and a forward conical ring plate 24 coaxially connected between the forward inner ring 23 and the forward outer ring 22, and the upper end of the side wall of the forward conical ring plate 24 is provided with a through hole. Air hole one 25, the air holes one 25 are distributed in a circular array around the positive inner ring 23, the reverse delay guide 21 includes a coaxially arranged reverse outer ring 26, a reverse inner ring 27 and an inverted cone ring plate 28 coaxially connected between the reverse inner ring 27 and the reverse outer ring 26, and the upper end of the side wall of the inverted cone ring plate 28 is provided with air holes two 29, and the air holes two 29 are distributed in a circular array around the reverse outer ring 26; the upper and lower sides of the positive delay guide 20 and the upper and lower sides of the reverse delay guide 21 are respectively provided with sealing gaskets 30.

[0034] The ultrasonic generating component 11 includes an ultrasonic generator 33 and an ultrasonic transducer 34. The bottom end of the reaction tube 10 is connected to an ultrasonic generating chamber 35. The ultrasonic generator 33 and the ultrasonic transducer 34 are arranged in the ultrasonic generating chamber 35. The ultrasonic transducer 34 is arranged at the bottom end of the reaction tube 10, and the ultrasonic transducer 34 is electrically connected to the ultrasonic generator 33.

[0035] The self-replaceable filter mechanism 9 includes a filter bracket 36, a fixed tube 37, a sliding tube 38, a filter tube 39, a pressure trigger mechanism 40 and a sliding mechanism 41. The filter bracket 36 is arranged on the base 5. A mounting plate 42 is arranged on the upper end of the filter bracket 36. The fixed tube 37 is fixedly arranged on the upper wall of the mounting plate 42. An inverted L-shaped pull-out rod 44 is arranged on the upper end of the fixed tube 37. The end of the fixed tube 37 away from the sliding tube 38 is closed. A transmission hose is provided between the end of the fixed tube 37 away from the sliding tube 38 and the air outlet end of the condensation mechanism 8. An inverted L-shaped pull-out sleeve 43 is arranged on the upper end of the sliding tube 38. The sliding tube 38 is through-set from front to back. The L-shaped pull-out rod 44 is slidably arranged in the inverted L-shaped pull-out sleeve 43, and the sliding tube 38 is slidably arranged on one side of the fixed tube 37 through the inverted L-shaped pull-out sleeve 43 and the inverted L-shaped pull-out rod 44. The filter tube 39 is pressed between the fixed tube 37 and the sliding tube 38. The sliding push mechanism 41 is arranged on the mounting plate 42, and the pressure trigger mechanism 40 is arranged on one side of the fixed tube 37. The pressure trigger mechanism 40 is electrically connected to the sliding push mechanism 41. A splicing female part 45 and a splicing male part 46 are respectively provided on both sides of the filter tube 39. Any two filter tubes 39 can be spliced ​​and assembled together through the splicing female part 45 and the splicing male part 46. An activated carbon filter element 47 is provided in the filter tube 39.

[0036] The splicing mother component 45 includes an L-shaped rail 65 symmetrically arranged on one side of the filter tube 39, and the splicing male component 46 includes a guide rail 66, a clamping rod 67 and a spring 68. The guide rail 66 is arranged on the side wall of the filter tube 39 away from the splicing mother component 45. The guide rail 66 is symmetrically slidably provided with a splicing slider 69. The clamping rods 67 are respectively arranged on the splicing sliders 69. The spring 68 is arranged between the two clamping rods 67. The two filter tubes 39 can be quickly spliced ​​together by quickly clamping the clamping rod 67 into the L-shaped rail 65.

[0037] A positioning hole 70 is formed through the side wall of the L-shaped rail 65 , and a wedge block 71 is formed on one side of the clamping rod 67 close to the L-shaped rail 65 , through which the two filter tubes 39 can be quickly aligned.

[0038] The sliding mechanism 41 includes an electric push rod 48, a sliding push plate 49, a sliding connecting rod 50 and a translation slide 51. The upper wall of the mounting plate 42 is provided with a replacement slide rail 52, and the replacement slide rail 52 is arranged perpendicular to the sliding direction of the sliding tube 38. The upper wall of the mounting plate 42 is provided with a fixed baffle 53, and the fixed baffle 53 is arranged on one side of the fixed tube 37. The translation slide 51 is slidably arranged in the replacement slide rail 52, and the translation slide 51 is arranged below the sliding tube 38. A push slide groove is provided on the translation slide 51, and a push slide shaft 54 ​​is provided at the bottom end of the sliding tube 38. The push slide shaft 54 ​​is slidably clamped in the push slide groove, and the push slide groove includes a connected oblique slide groove 55 and a parallel slide groove 56. 6. The parallel slide groove 56 is arranged in parallel with the replacement slide rail 52. The oblique slide groove 55 is inclined at one end of the parallel slide groove 56 close to the fixed baffle 53. The mounting plate 42 is penetrated with a push slide hole 57. The electric push rod 48 is arranged on the bottom wall of the mounting plate 42. The end of the electric push rod 48 is provided with an actuator plate 58. The actuator plate 58 is arranged at one end of the electric push rod 48 away from the fixed baffle 53. The sliding link 50 is arranged at the upper end of the actuator plate 58. The sliding link 50 penetrates the push slide hole 57. The sliding push plate 49 is arranged at the upper end of the sliding link 50 and above the mounting seat. The sliding push plate 49 is connected to the translation slide plate 51. The length of the parallel slide groove 56 is greater than or equal to the width of the filter tube 39.

[0039] The bottom wall and side wall of the filter tube 39 are respectively provided with sliding magnets 72, and the side wall of the fixed baffle 53 and the bottom wall of the mounting plate 42 are respectively provided with fixed magnets 73. The fixed magnet 73 on the bottom wall of the mounting plate 42 is arranged between the sliding tube 38 and the fixed tube 37. The sliding magnet 72 and the fixed magnet 73 facilitate positioning of the filter tube 39.

[0040] The pressure trigger mechanism 40 includes a piston cylinder 59, a piston 60, a push spring 61, a pressure sensor 62 and a controller 63. The piston cylinder 59 is arranged on one side of the fixed tube 37, and the piston cylinder 59 is connected to the fixed tube 37. The piston 60 is slidably arranged in the piston cylinder 59. The push spring 61 is arranged between the piston cylinder 59 and the piston 60 and pushes the piston 60 to move toward the fixed tube 37. The pressure sensor 62 is arranged at one end of the piston cylinder 59 away from the fixed tube 37. A trigger rod 64 is provided on the side of the piston 60 close to the pressure sensor 62. The controller 63 is arranged on the side wall of the fixed tube 37, and the controller 63 is electrically connected to the pressure sensor 62 and the electric push rod 48 respectively.

[0041] When in use, start the vacuum pump 1 and the waste gas purification device 2, bring the suction head 4 close to the anesthesia mask, the extraction tube 3 adopts a gooseneck hose, which can be bent and shaped arbitrarily to facilitate the adjustment of the position of the suction head 4, and the vacuum pump 1 sends the generated anesthetic waste gas into the reaction cylinder 10 through the jet tube 13, and the anesthetic waste gas is ejected to the conical diverter 17 in the form of a jet through the jet tube 13. The conical diverter 17 scatters and diverts the ejected airflow. On the one hand, the gas jet will break into bubbles of different sizes after entering the liquid, and produce a strong stirring effect on the surrounding liquid. On the other hand, when the jet hits the cone When the jet hits the surface of the conical diverter 17, scattering will occur, and the airflow will disperse to the surroundings to form a scattered fluid area, so that the gas and the reaction liquid are in uniform contact, and when the jet hits the conical diverter 17, a large number of tiny cavitation bubbles may be quickly formed near the impact point. At the same time, with the ultrasonic generating component 11, the energy of the ultrasonic wave can make the movement of liquid molecules more intense, reduce the surface tension and local pressure of the liquid, thereby reducing the energy threshold required for the jet to generate bubbles, so that more bubbles can be generated even when the jet energy is relatively low. The bubbles can increase the gas The contact area between the body and the liquid helps to improve the reaction rate and efficiency. The gas in the form of bubbles reacts in the liquid, which can reduce the escape and waste of gas. Because the bubbles stay in the liquid for a long time, the gas utilization rate is higher. The gas-liquid mixed fluid scattered and diverted along the conical diverter 17 is guided to the bottom wall of the positive conical ring plate 24 through the annular transition ramp 19, and flows upward along the positive conical ring plate 24, flows to the bottom of the inverted conical ring plate 28 through the vent hole 1 25, and then flows upward along the inverted conical ring plate 28 to the vent hole 29, and flows to the next positive delay guide through the vent hole 29. At the flow part 20, the blocking and guiding of the multiple layers of forward delay guide parts 20 and reverse delay guide parts 21 can prolong the retention time of the anesthetic waste gas in the reaction liquid, increase the reaction time of the anesthetic waste gas and the reaction liquid, and make the anesthetic waste gas and the reaction liquid fully react. The reacted gas flows into the condensation mechanism 8 through the outlet pipe 15. The condensation mechanism 8 dehumidifies the moisture after the reaction to prevent the moisture in the gas from affecting the adsorption performance of the activated carbon. The dehumidified waste gas flows into the fixed tube 37 through the transmission hose, is filtered and adsorbed by the activated carbon filter element 47 in the filter tube 39, and is discharged from the sliding tube 38.

[0042] A spare filter tube 39 is pre-assembled on the side of the filter tube 39 away from the fixed baffle 53, and the two clamping rods 67 are aligned with the L-shaped clamping rail 65 and inserted. When the wedge block 71 is inserted into the positioning hole 70, the two filter tubes 39 are aligned. After long-term use, the adsorption capacity of the activated carbon decreases, and the gas accumulates in the fixed tube 37. The air pressure in the fixed tube 37 increases, which will push the piston 60 to overcome the elastic force of the push spring 61 and move closer to the end of the piston cylinder 59. When the trigger rod 64 on the side wall of the piston 60 hits the pressure sensor 62, the pressure sensor 62 sends a signal to the controller 63, and the controller 63 controls the electric push rod 48 to first contract and then extend to reset, and the initial When the electric push rod 48 is in the state, the push slide shaft 54 ​​is located at the end of the oblique slide groove 55 away from the parallel slide groove 56. At this time, the sliding tube 38, the filter tube 39 and the fixed tube 37 are tightly pressed together, and there is a certain distance between the sliding push plate 49 and the spare filter tube 39. As the electric push rod 48 contracts, the electric push rod 48 drives the sliding push plate 49 to approach the fixed tube 37 through the execution plate 58 and the sliding connecting rod 50. The sliding push plate 49 drives the translation slide plate 51 to slide along the replacement slide rail 52 to approach the fixed baffle plate 53. The translation slide plate 51 drives the oblique slide groove 55 to slide relative to the push slide shaft 54. When the oblique slide groove 55 moves, the sliding tube 38 is driven to move axially away from the replacement filter tube 39 through the push slide shaft 54. The old filter tube 39 and the fixed tube 37, the inverted L-shaped pull-out sleeve 43 and the inverted L-shaped pull-out rod 44 limit the sliding tube 38 so that it can only slide along the axial direction. When the push slide shaft 54 ​​moves from the oblique slide groove 55 to the parallel slide groove 56, the sliding push plate 49 fits with the side wall of the spare filter tube 39, and as the electric push rod 48 continues to shrink, the sliding push plate 49 pushes the translation slide plate 51 and the spare filter tube 39 to move synchronously close to the fixed baffle 53, and the translation slide plate 51 drives the parallel slide groove 56 to slide relative to the push slide shaft 54, and the spare filter tube 39 pushes the old filter tube 39 to move close to the fixed baffle 53 until the old filter tube 39 is tightly attached to the fixed baffle 53. When fitting, the electric push rod 48 stops contracting. At this time, the spare filter tube 39 is axially aligned with the sliding tube 38 and the fixed tube 37. Then the controller 63 controls the electric push rod 48 to extend and reset. When the oblique slide groove 55 slides close to the push slide shaft 54, the oblique slide groove 55 pushes the sliding tube 38 to slide axially close to the fixed tube 37 through the push slide shaft 54, so that the spare filter tube 39 is pressed between the fixed tube 37 and the sliding tube 38, realizing the rapid and automatic replacement of the filter tube 39. Press the clamping rod 67 to make them close to each other, then remove the old filter tube 39 from the installed spare filter tube 39, and reinstall a new spare filter tube 39.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. An anesthetic waste gas extraction device for anesthesia department, characterized in that: It includes an exhaust pump, one end of which is connected to an exhaust gas purification device, the other end of which is connected to an extraction pipe, the end of which is connected to a suction head, the exhaust gas purification device includes a base, a purification box, an ultrasonic jet reaction mechanism, a condensation mechanism and a self-replaceable filter mechanism, the purification box is arranged on the base, the ultrasonic jet reaction mechanism and the condensation mechanism are arranged in the purification box, a filter position is arranged on one side of the purification box, the self-replaceable filter mechanism is arranged at the filter position, and the ultrasonic jet reaction mechanism, the condensation mechanism and the self-replaceable filter mechanism are connected in sequence.

2. The anesthetic waste gas extraction device for anesthesia department according to claim 1, characterized in that: The ultrasonic jet reaction mechanism comprises a reaction tube, an ultrasonic generating assembly, a multi-stage delay guide assembly and a jet tube. The ultrasonic generating assembly is arranged on the bottom wall of the purification box, the reaction tube is arranged above the ultrasonic generating assembly, the upper end of the reaction tube is threadedly sealed and connected with a tube cover, the lower end of the jet tube penetrates the central axis of the tube cover and extends downward into the reaction tube, the upper end of the jet tube is connected to the output end of the vacuum pump by a pipeline, the tube cover is fixedly penetrated with an air outlet pipe, and the air outlet pipe is connected to the condenser The multi-stage delay guide assembly is coaxially arranged in the reaction tube, a jet channel is penetrated from top to bottom in the middle of the multi-stage delay guide assembly, the jet tube is penetrated in the jet channel, a conical diverter is coaxially installed on the bottom wall of the reaction tube, the jet tube is arranged directly above the conical diverter, a one-way valve is arranged on the jet tube, an annular transition ramp is connected between the conical diverter and the circumferential side wall of the reaction tube, and the conical diverter, the annular transition ramp and the reaction tube are smoothly transitioned.

3. The anesthetic waste gas extraction device for anesthesia department according to claim 2, characterized in that: The multi-stage delay guide assembly includes a forward delay guide and a reverse delay guide, and the forward delay guide and the reverse delay guide are distributed in an axially spaced array along the reaction tube, and the forward delay guide and the reverse delay guide are tightly fitted, and the forward delay guide includes a coaxially arranged forward outer ring, a forward inner ring, and a forward conical ring plate coaxially connected between the forward inner ring and the forward outer ring, and an air vent one is provided at the upper end of the side wall of the forward conical ring plate, and the air vent one is distributed in an array around the circumference of the forward inner ring, and the reverse delay guide includes a coaxially arranged reverse outer ring, a reverse inner ring, and an inverted conical ring plate coaxially connected between the reverse inner ring and the reverse outer ring, and an air vent two is provided at the upper end of the side wall of the inverted conical ring plate, and the air vent two is distributed in an array around the circumference of the reverse outer ring.

4. The anesthetic waste gas extraction device for anesthesia department according to claim 3, characterized in that: The filter element is a filter element having a plurality of filter elements, a plurality of filter elements, a plurality of filter elements, a plurality of filter elements, and a plurality of filter elements.

5. The anesthetic waste gas extraction device for anesthesia department according to claim 4, characterized in that: The sliding mechanism includes an electric push rod, a sliding push plate, a sliding connecting rod and a translation slide plate. The upper wall of the mounting plate is provided with a replacement slide rail, and the replacement slide rail is arranged perpendicular to the sliding direction of the sliding tube. The upper wall of the mounting plate is provided with a fixed baffle, and the fixed baffle is arranged on one side of the fixed tube. The translation slide plate is slidably arranged in the replacement slide rail, and the translation slide plate is arranged below the sliding tube. A push slide groove is provided on the translation slide, and a push slide shaft is provided at the bottom end of the sliding tube. The push slide shaft is slidably clamped in the push slide groove, and the push slide groove includes a connected oblique slide groove and a parallel slide groove. The slide groove and the parallel slide groove are arranged parallel to the replacement slide rail, the oblique slide groove is inclined at one end of the parallel slide groove close to the fixed baffle, the mounting plate is penetrated by a push slide hole, the electric push rod is arranged on the bottom wall of the mounting plate, the end of the electric push rod is provided with an actuator plate, the actuator plate is arranged at the end of the electric push rod away from the fixed baffle, the sliding connecting rod is arranged at the upper end of the actuator plate, the sliding connecting rod passes through the push slide hole, the sliding push plate is arranged at the upper end of the sliding connecting rod and above the mounting seat, the sliding push plate is connected to the translation slide plate, and the length of the parallel slide groove is greater than or equal to the width of the filter tube.

6. The anesthetic waste gas extraction device for anesthesia department according to claim 5, characterized in that: The pressure trigger mechanism includes a piston cylinder, a piston, a push spring, a pressure sensor and a controller. The piston cylinder is arranged on one side of the fixed tube, the piston cylinder is connected to the fixed tube, the piston is slidably arranged in the piston cylinder, the push spring is arranged between the piston cylinder and the piston and pushes the piston to move toward the fixed tube, the pressure sensor is arranged at one end of the piston cylinder away from the fixed tube, and a trigger rod is arranged on the side of the piston close to the pressure sensor. The controller is arranged on the side wall of the fixed tube, and the controller is electrically connected to the pressure sensor and the electric push rod respectively.

7. The anesthetic waste gas extraction device for anesthesia department according to claim 6, characterized in that: The splicing mother part includes an L-shaped rail symmetrically arranged on one side of the filter tube, and the splicing male part includes a guide rail, a clamping rod and a spring. The guide rail is arranged on the side wall of the filter tube away from the splicing mother part. The guide rail is symmetrically slidably provided with a splicing slider, the clamping rods are respectively arranged on the splicing slider, and the spring is arranged between the two clamping rods.

8. The anesthetic waste gas extraction device for anesthesia department according to claim 7, characterized in that: A positioning hole is penetrated through the side wall of the L-shaped rail, and a wedge block is provided on one side of the clamping rod close to the L-shaped rail.

9. The anesthetic waste gas extraction device for anesthesia department according to claim 8, characterized in that: The bottom wall and side wall of the filter tube are respectively provided with sliding magnets, the side wall of the fixed baffle and the bottom wall of the mounting plate are respectively provided with fixed magnets, and the fixed magnet of the bottom wall of the mounting plate is arranged between the sliding tube and the fixed tube.

10. The anesthetic waste gas extraction device for anesthesia department according to claim 9, characterized in that: Sealing gaskets are respectively provided on the upper and lower sides of the forward delay guide member and the upper and lower sides of the reverse delay guide member, an annular baffle is coaxially fixedly provided in the reaction cylinder, a pressure ring is provided on the bottom wall of the cylinder cover, the multi-stage delay guide assembly is pressed between the pressure ring and the annular baffle, and the annular baffle is provided above the conical diverter and the annular transition ramp.

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