Medical anesthetic gas purification device

Abstract

The invention belongs to the technical field of medical instruments, and particularly relates to a medical anesthetic gas purification device which comprises a purification shell and a PLC arranged on the purification shell, the PLC is used for controlling the working state of each electric appliance element on the purification shell, two purification cavities are formed in the purification shell, and the purification cavities are communicated with the purification shell. And threaded pipes are rotationally arranged in the two purification cavities correspondingly and communicate with butt joint pipes in a threaded mode. During purification operation, through cooperation of the joint control unit and the lifting gas guide unit, waste anesthetic gas and the activated carbon purification filter element form a three-dimensional and all-around contact mode, the use efficiency of all parts of the activated carbon purification filter element is guaranteed, resource waste is reduced, the use cost is reduced, and meanwhile, the waste anesthetic gas purification device is suitable for industrial production. And after the previous activated carbon purification filter element is saturated, the next activated carbon purification filter element is automatically switched to work, so that the continuity of purification operation in the replacement operation process is ensured.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a medical anesthetic gas purification device. Background Art

[0002] In modern medical surgery, the anesthesia machine is a key device for implementing anesthesia operations. Usually, the anesthesia machine achieves the anesthesia effect by delivering anesthetic gas to the patient. However, during the anesthesia process, there is often unused anesthetic gas in the waste gas discharged by the anesthesia machine. If these waste gases are directly discharged into the operating environment without treatment, it will undoubtedly pose a potential threat to the health of medical staff and patients. To solve this problem, anesthetic gas purification devices are currently widely used, among which activated carbon filter materials are the core components in the purification process, which can effectively purify the anesthetic waste gas discharged by the anesthesia machine.

[0003] However, in the existing anesthetic gas purification device, the position where the anesthetic waste gas is transported to the activated carbon filter material of the purification device is relatively fixed during the purification operation. This causes excessive concentration of anesthetic waste gas at some positions of the activated carbon filter material, while sparse distribution of anesthetic waste gas at other positions. This uneven distribution makes it impossible to fully utilize some points of the activated carbon filter material, and ultimately causes the activated carbon filter material to have to be replaced when it is far from reaching the theoretical usage limit, resulting in a waste of resources and an increase in the cost of use. In addition, when replacing the activated carbon filter material, the traditional anesthetic gas purification device often needs to stop the equipment operation before operation can be performed. This process will cause the purification process to be interrupted, greatly affecting the overall purification efficiency.

[0004] Therefore, we propose a medical anesthetic gas purification device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a medical anesthetic gas purification device in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a medical anesthesia gas purification device, comprising a purification shell and a PLC controller arranged on the purification shell, the PLC controller is used to control the working state of each electrical component on the purification shell, the purification shell is provided with two purification chambers, and threaded pipes are rotatably arranged in the two purification chambers, the threaded pipes are threadedly connected with a butt pipe, and the upper end of the butt pipe is fixedly connected with an activated carbon purification filter element, the two purification chambers are provided with a lifting gas guide unit matched with the corresponding activated carbon purification filter element, the purification shell is provided with two joint control units, and the two joint control units respectively control the actions of the lifting gas guide unit and the threaded pipe in the corresponding purification chamber, and the purification shell is provided with a gas transmission monitoring unit matched with the two lifting gas guide units; Two exhaust monitoring and purification units are arranged on the purification shell, and two threaded pipes are rotationally connected to the corresponding exhaust monitoring and purification units respectively. The two exhaust monitoring and purification units are commonly connected to a three-way exhaust pipe, and the output end of the three-way exhaust pipe extends to the outside of the purification shell.

[0007] In the above-mentioned medical anesthetic gas purification device, the lifting gas guide unit includes two reciprocating screws, an arc-shaped gas guide seat, multiple gas guide nozzles, two electromagnetic blocks and two permanent magnet piston blocks. The two reciprocating screws are rotatably arranged in the corresponding purification chamber, and the arc-shaped gas guide seat is threadedly connected to the two reciprocating screws, each of the gas guide nozzles is fixedly connected to the arc-shaped gas guide seat, the two electromagnetic blocks are fixedly arranged in the arc-shaped gas guide seat, the two permanent magnet piston blocks are slidably arranged in the arc-shaped gas guide seat, and the two permanent magnet piston blocks are fixedly connected to the corresponding electromagnetic blocks through reset springs, and the two electromagnetic blocks are electrically connected to the PLC controller.

[0008] In the above-mentioned medical anesthetic gas purification device, the joint control unit includes a control chamber, a drive motor, a worm, a first worm gear and two second worm gears. The control chamber is opened on the lower side of the corresponding purification chamber, and the drive motor is fixedly arranged in the control chamber. The output end of the drive motor is fixedly connected to the worm, and the end of the worm away from the drive motor is rotatably connected to the control chamber. The lower ends of the threaded tube and the two reciprocating screws are both extended into the control chamber. The first worm gear is fixedly sleeved with the threaded tube, and the two second worm gears are respectively fixedly sleeved with the corresponding reciprocating screws. The first worm gear and the two second worm gears are both meshed with the worm, and the drive motor is electrically connected to the PLC controller.

[0009] In the above-mentioned medical anesthetic gas purification device, the gas supply monitoring unit includes a three-way gas supply pipe, a gas flow meter and two normally closed solenoid valves. The three-way gas supply pipe is fixedly arranged on the upper side of the purification shell, and the two output ends of the three-way gas supply pipe extend into the corresponding purification chamber and are connected with the corresponding arc-shaped gas guide seat through a corrugated expansion tube. The gas flow meter is arranged on the input end of the three-way gas supply pipe, and the two normally closed solenoid valves are respectively arranged on the two output ends of the three-way gas supply pipe. The gas flow meter and the two normally closed solenoid valves are electrically connected to the PLC controller, and the PLC controller controls the operating power of the electromagnetic block and the drive motor according to the electrical signal feedback from the gas flow meter.

[0010] In the above-mentioned medical anesthetic gas purification device, the exhaust monitoring purification unit includes an exhaust chamber, a worm gear airflow fan, a micro-generator and a plurality of ultraviolet sterilization lamp beads. The exhaust chamber is opened at the lower side of the corresponding control chamber, and the lower end of the threaded tube is rotationally connected to the corresponding exhaust chamber, the exhaust chamber is fixedly connected to the input end corresponding to the three-way exhaust pipe, the worm gear airflow fan is rotationally arranged in the exhaust chamber, and the transmission shaft of the worm gear airflow fan passes through the exhaust chamber and is transmission-connected to the input end of the micro-generator, each of the ultraviolet sterilization lamp beads is fixedly arranged on the blades of the worm gear airflow fan, and each of the ultraviolet sterilization lamp beads is electrically connected to the micro-generator, a Hall sensor electrically connected to the micro-generator is fixedly arranged on the purification shell, and the Hall sensor is electrically connected to the PLC controller, and the PLC controller switches the opening and closing states of the two normally closed solenoid valves according to the electrical signal state fed back by the Hall sensor.

[0011] In the above-mentioned medical anesthetic gas purification device, a plurality of support slides are fixedly arranged on the lower end surface of the activated carbon purification filter element, and the support slide is slidably connected to a support block, and the support block is fixedly connected to the support slide through a buffer spring, and a ball is rollingly connected to the lower end of the support block, and the ball is in contact with the inner bottom surface of the purification chamber.

[0012] In the above-mentioned medical anesthetic gas purification device, an air pump is fixedly installed on the upper side of the two purification chambers, the input end of the air pump is fixedly connected to the corresponding purification chamber, and the output end of the air pump is fixedly connected to the three-way gas pipe, and the air pump is electrically connected to the PLC controller.

[0013] In the above-mentioned medical anesthesia gas purification device, a warning light corresponding to the purification chamber is fixedly provided on the purification shell, and the warning light is electrically connected to the PLC controller.

[0014] Compared with the existing technology, the advantages of a medical anesthetic gas purification device are: Improve the use efficiency of activated carbon filter element: through the joint control unit, the threaded tube and the reciprocating screw are driven to rotate, which drives the activated carbon purification filter element to rotate and the arc-shaped air guide seat to rise and fall, so that the anesthetic waste gas and the activated carbon purification filter element form a three-dimensional and all-round contact mode, avoiding uneven distribution of waste gas on the filter element, improving the use efficiency of each part of the activated carbon purification filter element, reducing resource waste, and reducing the cost of use.

[0015] Intelligent adjustment of purification process: The gas flow meter in the gas transmission monitoring unit monitors the amount of anesthetic waste gas. The PLC controller adjusts the electromagnetic strength of the electromagnetic block and the operating power of the drive motor in real time according to the electrical signal fed back by it, thereby intelligently adjusting the size of the gas guide channel, the lifting speed of the arc-shaped gas guide seat, and the speed of the activated carbon purification filter element. When the amount of waste gas introduced changes, it can ensure that the waste gas is quickly and evenly distributed to all parts of the activated carbon purification filter element to maintain a stable purification effect.

[0016] Achieve uninterrupted purification work: When the activated carbon purification filter element in a purification chamber is saturated with adsorption, the PLC controller can automatically switch to another purification chamber to continue the purification work, and at the same time control the air pump to pump the residual anesthetic waste gas in the saturated purification chamber to the working purification chamber for treatment, avoiding direct discharge of waste gas to pollute the environment, ensuring the continuity of the entire purification work, and greatly improving the purification efficiency.

[0017] With exhaust monitoring and purification function: the exhaust monitoring and purification unit uses the worm gear airflow fan to convert the kinetic energy of the airflow into electrical energy to power the ultraviolet sterilization lamp beads, thereby achieving secondary sterilization and purification of the purified gas. In addition, the ultraviolet sterilization lamp beads perform dynamic sterilization as the fan blades rotate, which has a better sterilization effect than fixed positions. At the same time, the Hall sensor monitors the electrical signal of the micro-generator and feeds back to the PLC controller to assist in judging the purification effect of the activated carbon purification filter element so as to switch the purification chamber in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view structural schematic diagram of a medical anesthesia gas purification device provided by the present invention; Figure 2 It is a front perspective structural schematic diagram of a medical anesthesia gas purification device provided by the present invention; Figure 3 It is a schematic structural diagram of the cooperation between a joint control unit and a lifting and gas guiding unit of a medical anesthesia gas purification device provided by the present invention; Figure 4 It is a top perspective structural schematic diagram of an arc-shaped gas guide seat of a medical anesthesia gas purification device provided by the present invention; Figure 5 It is a schematic diagram of the internal structure of an exhaust chamber of a medical anesthesia gas purification device provided by the present invention; Figure 6 The present invention is a schematic diagram of a front perspective structure of a supporting slide and a supporting block of a medical anesthesia gas purification device in which the supporting slide and the supporting block cooperate with each other.

[0019] In the figure: 1 purification housing, 2 PLC controller, 3 purification chamber, 4 threaded pipe, 5 butt pipe, 6 activated carbon purification filter element, 7 lifting air guide unit, 71 reciprocating screw, 72 arc air guide seat, 73 air guide nozzle, 74 electromagnetic block, 75 permanent magnet piston block, 8 joint control unit, 81 control chamber, 82 drive motor, 83 worm, 84 first worm gear, 85 second worm gear, 9 gas transmission monitoring unit, 91 three-way gas transmission pipe, 92 gas flow meter, 93 normally closed electromagnetic valve, 10 exhaust monitoring purification unit, 101 exhaust chamber, 102 worm gear airflow fan, 103 micro generator, 104 ultraviolet sterilization lamp beads, 11 reset spring, 12 corrugated telescopic tube, 13 Hall sensor, 14 support slide, 15 support block, 16 buffer spring, 17 ball, 18 air pump, 19 warning light, 20 three-way exhaust pipe. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0021] like Figure 1-Figure 6 As shown, a medical anesthetic gas purification device comprises a purification housing 1 and a PLC controller 2 arranged on the purification housing 1, the PLC controller 2 is used to control the working state of each electrical component on the purification housing 1, the purification housing 1 is provided with two purification chambers 3, and the two purification chambers 3 are both rotatably provided with a threaded pipe 4, the threaded pipe 4 is threadedly connected with a butt pipe 5, and the upper end of the butt pipe 5 is fixedly connected with an activated carbon purification filter element 6, the activated carbon purification filter element 6 is cylindrical as a whole, and is composed of a three-layer structure, the outer layer is closely combined by a steel wire mesh and a nylon mesh, and is used to filter large particle impurities in anesthetic waste gas, the second layer is made of a fiber mesh material, the fiber mesh has a fine fiber structure, and can capture fine particle impurities in the anesthetic waste gas that escape the outer layer filtration, further improve the cleanliness of the gas, and reduce the influence of tiny particles on the subsequent activated carbon purification adsorption effect, the third layer is composed of an activated carbon purification material with high adsorption performance, and can use the principles of physical adsorption and chemical adsorption to efficiently adsorb various harmful gases in the anesthetic waste gas, thereby realizing deep purification of the anesthetic waste gas, so that the gas treated by the filter element meets the emission standard.

[0022] The lower end surface of the activated carbon purification filter element 6 is fixedly provided with a plurality of support slides 14, and the support slide 14 is slidably connected with a support block 15, and the support block 15 is fixedly connected to the support slide 14 through a buffer spring 16, and the lower end of the support block 15 is rollingly connected with a ball 17, and the ball 17 is in contact with the inner bottom surface of the purification chamber 3. Through the cooperation of the support slide 14, the support block 15 and the buffer spring 16, the activated carbon purification filter element 6 can be supported to ensure the stability of the rotation of the activated carbon purification filter element 6, and the setting of the ball 17 can reduce the friction between the support block 15 and the inner bottom surface of the purification chamber 3 to ensure the smoothness of the rotation of the activated carbon purification filter element 6.

[0023] The two purification chambers 3 are each provided with a lifting air guide unit 7 that cooperates with the corresponding activated carbon purification filter element 6. The lifting air guide unit 7 includes two reciprocating screws 71, an arc-shaped air guide seat 72, a plurality of air guide nozzles 73, two electromagnetic blocks 74 and two permanent magnet piston blocks 75. The two reciprocating screws 71 are rotatably arranged in the corresponding purification chamber 3, and the arc-shaped air guide seat 72 is threadedly connected to the two reciprocating screws 71, each air guide nozzle 73 is fixedly connected to the arc-shaped air guide seat 72, the two electromagnetic blocks 74 are fixedly arranged in the arc-shaped air guide seat 72, the two permanent magnet piston blocks 75 are slidably arranged in the arc-shaped air guide seat 72, and the two Each permanent magnet piston block 75 is fixedly connected to the corresponding electromagnetic block 74 through a reset spring 11, and the two electromagnetic blocks 74 are electrically connected to the PLC controller 2. By setting two reciprocating screws 71, the two sides of the arc-shaped air guide seat 72 can be stably stressed to ensure the stability of the reciprocating lifting of the arc-shaped air guide seat 72. By setting the electromagnetic block 74, the electromagnetic strength of the electromagnetic block 74 can be controlled as needed, and then the suction force between the electromagnetic block 74 and the permanent magnet piston block 75 can be controlled, so as to realize the spacing control of the two permanent magnet piston blocks 75, and then the size of the air guide channel opening of the arc-shaped air guide seat 72 can be controlled as needed.

[0024] Two joint control units 8 are arranged on the purification housing 1, and the two joint control units 8 respectively control the actions of the lifting air guide unit 7 and the threaded tube 4 in the corresponding purification chamber 3. The joint control unit 8 includes a control chamber 81, a drive motor 82, a worm 83, a first worm gear 84 and two second worm gears 85. The control chamber 81 is opened at the lower side of the corresponding purification chamber 3, and the drive motor 82 is fixedly arranged in the control chamber 81. The output end of the drive motor 82 is fixedly connected to the worm 83, and the end of the worm 83 away from the drive motor 82 is rotatably connected to the control chamber 81. The threaded tube 4 and The lower ends of the two reciprocating screws 71 are extended to the control chamber 81, the first worm gear 84 is fixedly sleeved with the threaded tube 4, and the two second worm gears 85 are respectively fixedly sleeved with the corresponding reciprocating screws 71, the first worm gear 84 and the two second worm gears 85 are meshed with the worm 83, and the drive motor 82 is electrically connected to the PLC controller 2. Through the cooperation of the set worm 83 and the first worm gear 84 and the two second worm gears 85, the drive motor 82 can control the two reciprocating screws 71 and the threaded tube 4 to rotate synchronously, thereby avoiding the cost of adding additional driving equipment.

[0025] The purification housing 1 is provided with a gas supply monitoring unit 9 which cooperates with the two lifting gas guide units 7. The gas supply monitoring unit 9 includes a three-way gas supply pipe 91, a gas flow meter 92 and two normally closed solenoid valves 93. The three-way gas supply pipe 91 is fixedly arranged on the upper side of the purification housing 1, and the two output ends of the three-way gas supply pipe 91 extend into the corresponding purification chamber 3 and are connected with the corresponding arc-shaped gas guide seat 72 through the corrugated expansion pipe 12. The gas flow meter 92 is arranged on the input end of the three-way gas supply pipe 91, and the two normally closed solenoid valves 93 are respectively arranged on the two output ends of the three-way gas supply pipe 91. The gas flow The gas flow meter 92 and the two normally closed solenoid valves 93 are electrically connected to the PLC controller 2. The PLC controller 2 controls the operating power of the electromagnetic block 74 and the drive motor 82 according to the electrical signal fed back by the gas flow meter 92. The two normally closed solenoid valves 93 can be used to switch the delivery channel as needed, thereby realizing the switching of the use of the two purification chambers 3. The gas flow meter 92 can monitor the amount of anesthetic waste gas delivered, and feed back the corresponding electrical signal to the PLC controller 2, so that the PLC controller 2 can adjust the joint control unit 8 and the lifting and lowering gas guide unit 7 in real time according to the delivery situation of the anesthetic waste gas. An air pump 18 is fixedly arranged on the upper side of the two purification chambers 3, the input end of the air pump 18 is fixedly connected to the corresponding purification chamber 3, and the output end of the air pump 18 is fixedly connected to the three-way air pipe 91, and the air pump 18 is electrically connected to the PLC controller 2. Through the set air pump 18, the anesthetic waste gas remaining in the corresponding purification chamber 3 can be guided to the three-way air pipe 91 before replacing the activated carbon purification filter element 6, so as to be guided to the other purification chamber 3 for continued purification, so as to avoid the direct discharge of the anesthetic waste gas during replacement to pollute the environment.

[0026] Two exhaust monitoring and purification units 10 are arranged on the purification shell 1, and the two threaded pipes 4 are rotatably connected to the corresponding exhaust monitoring and purification units 10 respectively. The two exhaust monitoring and purification units 10 are commonly connected to a three-way exhaust pipe 20, and the output end of the three-way exhaust pipe 20 extends to the outside of the purification shell 1. Both side input ends of the three-way exhaust pipe 20 are provided with one-way valves to prevent gas backflow.

[0027] The exhaust monitoring and purification unit 10 includes an exhaust chamber 101, a worm gear airflow fan 102, a micro generator 103 and a plurality of ultraviolet sterilization lamp beads 104. The exhaust chamber 101 is opened at the lower side of the corresponding control chamber 81, and the lower end of the threaded tube 4 is rotatably connected to the corresponding exhaust chamber 101. The exhaust chamber 101 is fixedly connected to the input end corresponding to the three-way exhaust pipe 20. The worm gear airflow fan 102 is rotatably arranged in the exhaust chamber 101, and the transmission shaft of the worm gear airflow fan 102 passes through the exhaust chamber 101 and is transmission-connected to the input end of the micro generator 103. Each ultraviolet sterilization lamp bead 104 is fixedly arranged on the fan blade of the worm gear airflow fan 102, and each ultraviolet sterilization lamp bead 104 is electrically connected to the micro generator 103. A Hall sensor 13 electrically connected to the micro generator 103 is fixedly arranged on the purification housing 1, and the Hall sensor The sensor 13 is electrically connected to the PLC controller 2. The PLC controller 2 switches the opening and closing states of the two normally closed solenoid valves 93 according to the electrical signal state fed back by the Hall sensor 13, thereby realizing the switching of the working states of the two purification chambers 3. By setting the worm gear airflow fan 102 in conjunction with the micro-generator 103, the kinetic energy of the airflow can be converted into electrical energy to power each ultraviolet sterilization lamp bead 104, which plays a certain energy-saving role. At the same time, the ultraviolet sterilization lamp bead 104 can rotate in conjunction with the worm gear airflow fan 102 to realize dynamic sterilization and improve the sterilization effect. In addition, through the set Hall sensor 13, the power generation status of the micro-generator 103 based on the airflow can be fed back to the PLC controller 2, so that the PLC can switch the use of the purification chamber 3 according to the use status of the activated carbon purification filter element 6 in the purification chamber 3.

[0028] A warning light 19 corresponding to the purification chamber 3 is fixedly arranged on the purification housing 1 , and the warning light 19 is electrically connected to the PLC controller 2 . The setting of the warning light 19 facilitates the user to determine the use status of the purification chamber 3 .

[0029] The operating principle of the present invention is now described as follows: When purifying the anesthetic waste gas, when in use, first connect the input end of the three-way air pipe 91 to the exhaust port of the anesthesia machine through the connecting pipe. After starting the device, the PLC controller 2 controls the normally closed solenoid valve 93 corresponding to the left purification chamber 3 to be energized and opened, and at the same time triggers the joint control unit 8 corresponding to the left purification chamber 3 to start working. At this time, the anesthetic waste gas discharged by the anesthesia machine enters the arc-shaped air guide seat 72 in the left purification chamber 3 through the three-way air pipe 91 under the action of the pressure difference. A plurality of air guide nozzles 73 are evenly distributed on the arc-shaped air guide seat 72. The anesthetic waste gas is guided to the corresponding activated carbon purification filter element 6 through these air guide nozzles 73. The activated carbon purification filter element 6 uses its rich pore structure and strong adsorption capacity to purify the harmful components in the anesthetic waste gas. The purified gas enters the interior of the activated carbon purification filter element 6, and then flows into the exhaust chamber 101 through the butt joint pipe 5 at the bottom thereof and is discharged through the three-way exhaust pipe 20 under the guidance of the threaded pipe 4; After the joint control unit 8 is started, the driving motor 82 is powered on and operates, and its output shaft drives the worm 83 to rotate, and the worm 83 is meshed with the first worm gear 84 and the two second worm gears 85. Since the first worm gear 84 is fixedly sleeved on the threaded tube 4, and the two second worm gears 85 are respectively fixedly sleeved on the two reciprocating screws 71, when the worm 83 rotates, the threaded tube 4 and the two reciprocating screws 71 will rotate synchronously. When the two reciprocating screws 71 rotate, the arc-shaped air guide seat 72 threadedly connected to them will reciprocate up and down along the screws, so that the anesthetic waste gas derived from the air guide nozzle 73 can be reciprocated and diffused in the height direction of the activated carbon purification filter element 6 to cover a wider area. At the same time, the rotation of the threaded tube 4 drives the activated carbon purification filter element 6 connected thereto to rotate synchronously. In this way, the contact between the anesthetic waste gas and the activated carbon purification filter element 6 is no longer limited to a fixed position or plane, but forms a three-dimensional, all-round contact mode, which greatly improves the use efficiency of each part of the activated carbon purification filter element 6 and reduces the waste of resources caused by the uneven distribution of anesthetic waste gas. The gas flow meter 92 installed on the three-way gas pipe 91 monitors the amount of anesthetic waste gas being transported at all times. When the amount of anesthetic waste gas increases and reaches a certain range, the gas flow meter 92 converts the real-time monitored flow data into an electrical signal and feeds it back to the PLC controller 2. After receiving the signal, the PLC controller 2 correspondingly increases the electromagnetic strength of the two electromagnetic blocks 74 in the arc-shaped gas guide seat 72 according to the preset program and algorithm. After the electromagnetic force of the electromagnetic block 74 is enhanced, the attraction of the corresponding permanent magnetic piston block 75 is increased, so that the two permanent magnetic piston blocks 75 overcome the reset The elastic force of the spring 11 moves a certain distance away from each other, and the movement of the permanent magnetic piston block 75 changes the gas channel structure inside the arc-shaped gas guide seat 72, expands the cross-sectional area of ​​the gas guide channel, and increases the number of gas guide nozzles 73 involved in the gas guide, thereby improving the delivery capacity of the anesthetic waste gas. At the same time, the PLC controller 2 will also increase the output power of the drive motor 82 to increase the speed of the drive motor 82, which increases the rotation speed of the worm 83, thereby accelerating the reciprocating lifting speed of the arc-shaped gas guide seat 72 and the speed of the activated carbon purification filter element 6. Through these coordinated adjustments , it can ensure that when the amount of anesthetic waste gas introduced increases, the anesthetic waste gas can still be quickly and evenly distributed to all parts of the activated carbon purification filter element 6 to ensure the purification effect. On the contrary, when the gas flow meter 92 detects that the amount of anesthetic waste gas delivered is reduced, the electrical signal it feeds back to the PLC controller 2 will also change accordingly. After receiving the signal, the PLC controller 2 reduces the electromagnetic strength of the two electromagnetic blocks 74, so that the permanent magnetic piston blocks 75 are close to each other under the action of the reset spring 11, the air guide channel is reduced, and the number of interventions of the air guide nozzle 73 is reduced, which can ensure a small amount of anesthetic waste gas. When the waste gas passes through the air guide nozzle 73, a certain air pressure strength is maintained, and the waste gas is effectively guided to the activated carbon purification filter element 6, and the contact strength between the anesthetic waste gas and the activated carbon purification filter element 6 is maintained. At the same time, the output power of the driving motor 82 in the joint control unit 8 will be reduced accordingly, so that the lifting speed of the arc-shaped air guide seat 72 and the rotation speed of the activated carbon purification filter element 6 will be correspondingly slowed down. In this way, a small amount of anesthetic waste gas will stay at the export point during the export process. The time will be extended accordingly, thereby maintaining the anesthetic waste gas guided by the activated carbon purification filter element 6 at various locations at an appropriate concentration, ensuring a stable purification effect; After the anesthetic waste gas enters the exhaust chamber 101, the flowing gas impacts the blades of the worm gear airflow fan 102, causing it to rotate around the transmission shaft. The transmission shaft of the worm gear airflow fan 102 runs through the exhaust chamber 101 and is connected to the input end of the micro generator 103. When the worm gear airflow fan 102 rotates, it drives the micro generator 103 to operate, converting mechanical energy into electrical energy, thereby achieving a certain degree of energy saving. The current generated by the micro generator 103 supplies power to a plurality of ultraviolet sterilization lamp beads 104 fixed on the blades of the worm gear airflow fan 102, causing them to emit ultraviolet light. The ultraviolet light has the effect of sterilization and disinfection, and can perform secondary sterilization and purification on the purified gas. Moreover, since the ultraviolet sterilization lamp bead 104 is installed on the rotating fan blade, its light emitting position changes continuously with the rotation of the fan blade, realizing dynamic light emitting sterilization. Compared with the sterilization method of fixed position, the sterilization effect on the gas is greatly improved. The Hall sensor 13 fixedly installed on the purification housing 1 is electrically connected to the micro-generator 103, and it can monitor the state of the electrical signal generated by the micro-generator 103 in real time. The Hall sensor 13 feeds back the monitored electrical signal to the PLC controller 2. The PLC controller 2 judges the state of the current purification work according to the change of the electrical signal, especially whether the purification effect of the activated carbon purification filter element 6 is affected; As the purification work continues, the activated carbon purification filter element 6 in the left purification chamber 3 will gradually become saturated with adsorption. When the activated carbon purification filter element 6 reaches the saturated state, its purification ability for anesthetic waste gas is greatly reduced, resulting in a significant decrease in the amount of purified gas delivered to the exhaust chamber 101. At this time, the worm gear airflow fan 102 rotates slower due to the reduced gas flow, and the electric energy generated by the micro generator 103 is reduced. The electrical signal fed back to the PLC controller 2 will also be in a smaller range. The PLC controller 2 has timing and judgment functions. When it detects this low flow and low electrical signal When the condition remains unchanged for 2 minutes, it is determined that the activated carbon purification filter element 6 in the left purification chamber 3 is saturated, and the PLC controller 2 will automatically perform corresponding operations: first, turn off the normally closed electromagnetic relay 1 corresponding to the left purification chamber 3 to cut off the passage of the anesthetic waste gas into the left purification chamber 3; then shut down the joint control unit 8 to stop the rotation of the threaded tube 4, the reciprocating screw 71, etc.; at the same time, stop energizing the electromagnetic block 74 to restore the air guide structure of the arc-shaped air guide seat 72 to its initial state, and then the PLC controller 2 automatically controls the warning light 19 corresponding to the right purification chamber 3 to light up to remind the worker. The right purification chamber 3 of the staff is about to start working; at the same time, the normally closed solenoid valve 93 and the joint control unit 8 corresponding to the right purification chamber 3 are started, and the corresponding electromagnetic block 74 is controlled to be energized and started, so that the right purification chamber 3 quickly intervenes in the purification program, and takes over the left purification chamber 3 to continue to purify the anesthetic waste gas, ensuring that the entire purification work is uninterrupted. In addition, in order to avoid the direct discharge of the residual anesthetic waste gas in the left purification chamber 3 to cause pollution, the PLC controller 2 will control the air pump 18 on the left to work for 5 minutes. After the air pump 18 is started, the residual anesthetic waste gas in the left purification chamber 3 is pumped out through the three-way delivery pipe 1. The purification process continues in the purification chamber 3 on the right. After 5 minutes, the PLC controller 2 automatically controls the air pump 18 to stop. At this time, the prompt light 19 corresponding to the purification chamber 3 on the left goes out. According to the signal that the prompt light 19 goes out, the staff opens the sealed door of the purification chamber 3 on the left and replaces the saturated activated carbon purification filter element 6. Similarly, when the activated carbon purification filter element 6 in the purification chamber 3 on the right is saturated, the PLC controller 2 will automatically switch the components in the purification chamber 3 on the left to enter the purification process according to the same logic and procedures to ensure the continuous and stable operation of the entire purification device.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A medical anesthetic gas purification device, comprising a purification housing (1) and a PLC controller (2) arranged on the purification housing (1), wherein the PLC controller (2) is used to control the working state of each electrical component on the purification housing (1), characterized in that: The purification housing (1) is provided with two purification chambers (3), and a threaded tube (4) is rotatably provided in each of the two purification chambers (3), the threaded tube (4) is threadedly connected to a butt tube (5), and an upper end of the butt tube (5) is fixedly connected to an activated carbon purification filter element (6), and a lifting air guide unit (7) matching the corresponding activated carbon purification filter element (6) is provided in each of the two purification chambers (3), and two joint control units (8) are provided on the purification housing (1), and the two joint control units (8) respectively control the movements of the lifting air guide units (7) and the threaded tube (4) in the corresponding purification chambers (3), and a gas transmission monitoring unit (9) matching the two lifting air guide units (7) is provided on the purification housing (1); Two exhaust gas monitoring and purification units (10) are arranged on the purification housing (1), and the two threaded pipes (4) are respectively connected to the corresponding exhaust gas monitoring and purification units (10) in a rotational manner. The two exhaust gas monitoring and purification units (10) are connected to a three-way exhaust pipe (20) in common, and the output end of the three-way exhaust pipe (20) extends to the outside of the purification housing (1).

2. A medical anesthetic gas purification device according to claim 1, characterized in that: The lifting air guide unit (7) comprises two reciprocating screws (71), an arc-shaped air guide seat (72), a plurality of air guide nozzles (73), two electromagnetic blocks (74) and two permanent magnet piston blocks (75); the two reciprocating screws (71) are rotatably arranged in the corresponding purification chamber (3), the arc-shaped air guide seat (72) is threadedly connected to the two reciprocating screws (71), each of the air guide nozzles (73) is fixedly connected to the arc-shaped air guide seat (72), the two electromagnetic blocks (74) are fixedly arranged in the arc-shaped air guide seat (72), the two permanent magnet piston blocks (75) are slidably arranged in the arc-shaped air guide seat (72), and the two permanent magnet piston blocks (75) are fixedly connected to the corresponding electromagnetic blocks (74) via reset springs (11); and the two electromagnetic blocks (74) are electrically connected to the PLC controller (2).

3. A medical anesthetic gas purification device according to claim 2, characterized in that: The joint control unit (8) comprises a control chamber (81), a drive motor (82), a worm (83), a first worm wheel (84) and two second worm wheels (85); the control chamber (81) is opened at the lower side of the corresponding purification chamber (3); the drive motor (82) is fixedly arranged in the control chamber (81); the output end of the drive motor (82) is fixedly connected to the worm wheel (83); and one end of the worm wheel (83) away from the drive motor (82) is rotationally connected to the control chamber (81); the lower ends of the threaded tube (4) and the two reciprocating screws (71) are both extended into the control chamber (81); the first worm wheel (84) is fixedly sleeved with the threaded tube (4); and the two second worm wheels (85) are respectively fixedly sleeved with the corresponding reciprocating screws (71); the first worm wheel (84) and the two second worm wheels (85) are both meshed with the worm wheel (83); and the drive motor (82) is electrically connected to the PLC controller (2).

4. A medical anesthetic gas purification device according to claim 3, characterized in that: The gas supply monitoring unit (9) comprises a three-way gas supply pipe (91), a gas flow meter (92) and two normally closed solenoid valves (93); the three-way gas supply pipe (91) is fixedly arranged on the upper side of the purification housing (1), and the two output ends of the three-way gas supply pipe (91) both extend into the corresponding purification chamber (3) and are connected to the corresponding arc-shaped gas guide seat (72) through the corrugated expansion tube (12); the gas flow meter (92) is arranged on the input end of the three-way gas supply pipe (91), and the two normally closed solenoid valves (93) are respectively arranged on the two output ends of the three-way gas supply pipe (91); the gas flow meter (92) and the two normally closed solenoid valves (93) are both electrically connected to the PLC controller (2); and the PLC controller (2) controls the operating power of the electromagnetic block (74) and the drive motor (82) according to the electrical signal fed back by the gas flow meter (92).

5. A medical anesthetic gas purification device according to claim 4, characterized in that: The exhaust gas monitoring and purification unit (10) comprises an exhaust cavity (101), a worm gear airflow fan (102), a micro generator (103) and a plurality of ultraviolet sterilization lamp beads (104); the exhaust cavity (101) is opened at the lower side of the corresponding control cavity (81), and the lower end of the threaded tube (4) is rotatably connected to the corresponding exhaust cavity (101); the exhaust cavity (101) is fixedly connected to the corresponding input end of the three-way exhaust pipe (20); the worm gear airflow fan (102) is rotatably arranged in the exhaust cavity (101), and the transmission shaft of the worm gear airflow fan (102) passes through the exhaust cavity (101) and is connected to the micro generator; The input end of the motor (103) is connected in a transmission manner, each of the ultraviolet sterilization lamp beads (104) is fixedly arranged on the fan blades of the worm gear airflow fan (102), and each of the ultraviolet sterilization lamp beads (104) is electrically connected to the micro-generator (103). A Hall sensor (13) electrically connected to the micro-generator (103) is fixedly arranged on the purification housing (1), and the Hall sensor (13) is electrically connected to the PLC controller (2). The PLC controller (2) switches the opening and closing states of the two normally closed solenoid valves (93) according to the state of the electrical signal fed back by the Hall sensor (13).

6. A medical anesthetic gas purification device according to claim 1, characterized in that: A plurality of support slides (14) are fixedly arranged on the lower end surface of the activated carbon purification filter element (6), and the support slides (14) are slidably connected to support blocks (15), the support blocks (15) are fixedly connected to the support slides (14) via buffer springs (16), and the lower ends of the support blocks (15) are rollingly connected to balls (17), and the balls (17) are in contact with the inner bottom surface of the purification chamber (3).

7. A medical anesthetic gas purification device according to claim 4, characterized in that: An air pump (18) is fixedly arranged on the upper side of each of the two purification chambers (3); an input end of the air pump (18) is fixedly connected to the corresponding purification chamber (3); an output end of the air pump (18) is fixedly connected to a three-way air supply pipe (91); and the air pump (18) is electrically connected to a PLC controller (2).

8. A medical anesthetic gas purification device according to claim 1, characterized in that: A warning light (19) corresponding to the purification chamber (3) is fixedly arranged on the purification housing (1), and the warning light (19) is electrically connected to the PLC controller (2).

Images