Anesthesia waste gas extraction and purification device

Abstract

This utility model provides an anesthetic waste gas extraction and purification device, relating to the field of anesthetic waste gas purification technology. It includes: a purification box with a threaded connecting block at its top, an extraction box at the top of the threaded connecting block, and a filter frame inside the purification box; a disassembly assembly located between the purification box and the extraction box, comprising: threaded cavity a, threaded cavity b, sealing ring a, sealing ring b, and the filter frame; and an alarm assembly located inside the purification box, comprising: a pressure plate, a spring, a pressure rod, a pressure sensor, a microcontroller, and a buzzer. This purification device, through the disassembly assembly, facilitates the replacement of the coarse filter, fine filter, activated carbon filter, and treatment solution. The alarm assembly also provides an audible alarm to remind medical personnel to replace the filter frame, preventing equipment failure or abnormal negative pressure due to blockage and ensuring continuous and effective treatment of anesthetic waste gas.

Description

Technical Field

[0001] This utility model relates to the field of anesthetic waste gas purification technology, specifically to an anesthetic waste gas extraction and purification device. Background Technology

[0002] In modern surgical procedures, anesthesia machines are widely used for patient anesthesia management, but they also generate waste gases containing anesthetic gases (such as nitrous oxide, sevoflurane, and isoflurane). If these waste gases are not effectively collected and treated, they will escape into the operating room air, and long-term exposure may harm the health of medical staff, causing headaches, fatigue, reproductive system problems, and even potential cancer risks. Therefore, safe and efficient purification of anesthetic waste gases is crucial. Currently, common methods for treating anesthetic waste gases mainly include direct discharge outdoors, use of activated carbon adsorption devices, or treatment through water-washing purification equipment.

[0003] However, existing anesthetic waste gas purification devices still have certain shortcomings in use. For example, most existing anesthetic waste gas purification devices adopt an integrated or fixed structure. The replacement of filters, adsorption materials and treatment liquids requires disassembling multiple screws or opening the outer shell, which is cumbersome and time-consuming. In addition, during long-term operation, the filters or activated carbon layers are prone to blockage due to the accumulation of particulate matter, resulting in poor airflow, abnormal negative pressure, and even motor overload or incomplete waste gas treatment. Most existing devices lack real-time monitoring and alarm functions, making it difficult to remind medical staff to perform maintenance in a timely manner. Utility Model Content

[0004] The present invention aims to address the shortcomings of the prior art by providing an anesthetic waste gas extraction and purification device. To solve the above problems, the device allows for easy replacement of the coarse filter, fine filter, activated carbon filter, and treatment liquid through the disassembly of components. Furthermore, the alarm component can emit an alarm sound to remind medical personnel to replace the filter frame, thus preventing equipment failure or abnormal negative pressure due to blockage and ensuring continuous and effective treatment of anesthetic waste gas.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an anesthetic waste gas extraction and purification device, comprising: a purification box, a threaded connecting block at the top of the purification box, an extraction box at the top of the threaded connecting block, a filter frame inside the purification box, a disassembly assembly located between the purification box and the extraction box, the disassembly assembly comprising: a threaded cavity a, a threaded cavity b, a sealing ring a, a sealing ring b, and a filter frame, and an alarm assembly located inside the purification box, the alarm assembly comprising: a pressure plate, a spring, a pressure rod, a pressure sensor, a microcontroller, and a buzzer.

[0006] Preferably, the threaded connecting block has a threaded cavity a at its top and a threaded cavity b at its bottom. Internal threads are formed inside both threaded cavities a and b. A duct is fixedly connected inside the threaded connecting block, and a solenoid valve is fixedly installed on the duct. Multiple air outlets are formed on the outer side of the duct. The outer side of the extraction box has an external thread that mates with the internal thread of threaded cavity a, and the extraction box is threadedly connected to threaded cavity a. The outer side of the threaded connecting block has an external thread that mates with the internal thread of threaded cavity b, and the threaded connecting block is threadedly connected to threaded cavity b. Two slots are formed at the bottom of the inner wall of the purification box. An air outlet pipe is connected to one side of the purification box, and a water stop valve is provided on the air outlet pipe. A motor is fixedly installed inside the extraction box, and two ventilation screens are fixedly installed on the top of the extraction box.

[0007] Preferably, a sealing ring b is fixedly installed inside the threaded cavity a, and a sealing ring a is fixedly installed inside the threaded cavity b.

[0008] Preferably, two insert blocks are fixedly connected to the bottom of the filter frame, a coarse filter is fixedly installed inside the filter frame, a fine filter is fixedly installed on the top of the coarse filter, an activated carbon filter is fixedly installed on the top of the fine filter, and perforations are opened on the top of the coarse filter, the fine filter, and the activated carbon filter. A sealing ring c is fixedly installed inside each of the perforations, and the bottom end of the air guide pipe passes through the perforations.

[0009] Preferably, the bottom of the motor is connected to a rotating shaft via a rotating shaft drive, and multiple fan blades are provided on the outer side of the rotating shaft.

[0010] Preferably, the filter frame has a slot on one side and a through hole on one side, the purification box has a compression chamber inside, the purification box has an installation chamber inside, a pressure sensor is installed inside, a microcontroller is installed inside, and a buzzer is installed inside.

[0011] Preferably, the extrusion chamber is provided with an extrusion plate, an extrusion rod is fixedly connected to one side of the extrusion plate, and a spring is sleeved on the outside of the extrusion rod.

[0012] This utility model provides a device for extracting and purifying anesthetic waste gas, which has the following beneficial effects:

[0013] The advantage of this utility model is that, by setting up the disassembly components, the threaded connecting block, the air extraction box and the purification box can be rotated and separated, and the purification box and the filter frame can be removed as a whole, which facilitates the replacement of the coarse filter, fine filter, activated carbon filter and treatment liquid.

[0014] Secondly, by setting up the alarm component, an alarm can be sounded to remind medical staff to replace the filter holder when the coarse filter, fine filter or activated carbon filter becomes clogged, so as to avoid equipment failure or abnormal negative pressure due to blockage and ensure continuous and effective treatment of anesthetic waste gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a cross-sectional view of the extrusion chamber structure of this utility model.

[0018] Figure 4 This is a cross-sectional view of the threaded connection block structure of this utility model.

[0019] Figure 5 This is a cross-sectional schematic diagram of the filter frame structure of this utility model.

[0020] Figure 1-5 In the middle section: 1. Purification box; 101. Slot; 2. Threaded connecting block; 201. Air duct; 202. Solenoid valve; 203. Air outlet; 204. Threaded cavity a; 205. Threaded cavity b; 206. Sealing ring a; 207. Sealing ring b; 208. Air outlet pipe; 3. Extraction box; 301. Ventilation screen; 302. Motor; 303. Rotating shaft; 304. Fan blade; 4. Filter frame; 401. Coarse filter screen; 402. Fine filter screen; 403. Activated carbon filter screen; 404. Through hole; 405. Groove; 406. Perforation; 407. Insert block; 408. Sealing ring c; 5. Extrusion chamber; 501. Extrusion plate; 502. Extrusion rod; 503. Spring; 504. Mounting chamber; 505. Pressure sensor; 506. Buzzer; 507. Microcontroller. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0023] This application provides an anesthetic waste gas extraction and purification device. This device allows for easy replacement of the coarse filter, fine filter, activated carbon filter, and treatment fluid through a detachable component design. An alarm component provides an audible alert to remind medical personnel to replace the filter holder, preventing equipment failure or abnormal negative pressure due to clogging and ensuring continuous and effective treatment of anesthetic waste gas. The anesthetic waste gas extraction and purification device will be described in detail below. It should be noted that the order of description of the following embodiments is not intended to limit the preferred order of embodiments.

[0024] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0025] Please see Figure 1-5 In this embodiment, an anesthetic waste gas extraction and purification device is provided, comprising: a purification box 1, a threaded connecting block 2 on the top of the purification box 1, an extraction box 3 on the top of the threaded connecting block 2, and a filter frame 4 inside the purification box 1; a disassembly assembly located between the purification box 1 and the extraction box 3, the disassembly assembly comprising: a threaded cavity a204, a threaded cavity b205, a sealing ring a206, a sealing ring b207, and the filter frame 4; and an alarm assembly located inside the purification box 1, the alarm assembly comprising: a pressure plate 501, a spring 503, a pressure rod 502, a pressure sensor 505, a microcontroller 507, and a buzzer 506.

[0026] The component disassembly mechanism allows for the removal of the entire assembly, including the threaded connecting block 2, the extraction box 3, and the purification box 1, by rotating and separating them. This facilitates the replacement of the coarse filter 401, fine filter 402, activated carbon filter 403, and the treatment solution.

[0027] Secondly, by setting the alarm component, an alarm sound can be emitted to remind medical staff to replace the filter frame 4 when the coarse filter 401, fine filter 402 or activated carbon filter 403 becomes clogged, so as to avoid equipment failure or abnormal negative pressure due to blockage and ensure continuous and effective treatment of anesthetic waste gas.

[0028] The threaded connecting block 2 has a threaded cavity a204 at its top and a threaded cavity b205 at its bottom. Both the threaded cavities a204 and b205 have internal threads. A duct 201 is fixedly connected inside the threaded connecting block 2, and a solenoid valve 202 is fixedly installed on the duct 201. Multiple air outlets 203 are located on the outer side of the duct 201. The exhaust box 3 has an external thread that mates with the internal thread of the threaded cavity a204, and the exhaust box 3 is threadedly connected to the threaded cavity a204. The threaded connecting block 2 also has an external thread that mates with the internal thread of the threaded cavity b205, and the threaded connecting block 2 is threadedly connected to the threaded cavity b205. Two slots 101 are located at the bottom of the inner wall of the purification box 1, and an exhaust pipe 2 is connected to one side of the purification box 1. 08. A water stop valve is provided on the air outlet pipe 208. A motor 302 is fixedly installed inside the air extraction box 3. Two ventilation screens 301 are fixedly installed on the top of the air extraction box 3. A sealing ring b207 is fixedly installed inside the threaded cavity a204. A sealing ring a206 is fixedly installed inside the threaded cavity b205. Two inserts 407 are fixedly connected to the bottom of the filter frame 4. A coarse filter 401 is fixedly installed inside the filter frame 4. A fine filter 402 is fixedly installed on the top of the coarse filter 401. An activated carbon filter 403 is fixedly installed on the top of the fine filter 402. A perforation 406 is opened on the top of the coarse filter 401, the fine filter 402 and the activated carbon filter 403. A sealing ring c408 is fixedly installed inside each of the multiple perforations 406. The bottom end of the air guide pipe 201 passes through multiple perforations 406.

[0029] Among them, the bottom of the motor 302 is connected to the rotating shaft 303 via a rotating shaft drive, and multiple fan blades 304 are provided on the outside of the rotating shaft 303.

[0030] In use, the motor 302 and solenoid valve 202 can be turned on by the button switch on one side of the air extraction box 3. The motor 302 drives the rotating shaft 303 and fan blade 304 to rotate, so that the outside air passes through the ventilation net 301, enters the space between the air extraction box 3 and the threaded connecting block 2, and enters the treatment liquid inside 2 through the air guide pipe 201 and multiple air outlets 203. At this time, the anesthetic exhaust gas is filtered by the treatment liquid. Then, the filtered gas passes through the coarse filter 401, the fine filter 402 and the activated carbon filter 403 in sequence, so that the particulate matter in the exhaust gas is filtered out layer by layer, and then discharged to the outside through the exhaust pipe 208.

[0031] Furthermore, when filtration is complete, press the button switch on one side of the air extraction box 3 again to shut off the motor 302 and the solenoid valve 202. At this time, the solenoid valve 202 can prevent the treatment liquid from flowing into the air extraction box 3 through the air guide pipe 201, and the water stop valve on the air outlet pipe 208 can prevent the treatment liquid from leaking out through the air outlet pipe 208.

[0032] When it is necessary to replace the coarse filter 401, fine filter 402, or activated carbon filter 403, the threaded connecting block 2 and the extraction box 3 can be rotated so that the bottom of the threaded connecting block 2 is unscrewed from the top of the extraction box 3. Then, the threaded connecting block 2 and the extraction box 3 are pulled up so that the bottom of the air guide pipe 201 is pulled out from the multiple perforations 406, thereby separating the purification box 1 from the threaded connecting block 2. Then, the filter frame 4 is pulled up to remove it and the treatment fluid inside the threaded connecting block 2 is replaced. Next, a new filter frame 4 is taken out, and the two inserts 407 at the bottom of the filter frame 4 are inserted into the corresponding slots 101, with the slot opening 405 corresponding to the extrusion chamber 5. Then, the purification box 1 is screwed into the threaded cavity b205 to complete the replacement of the coarse filter 401, fine filter 402, or activated carbon filter 403. In addition, the treatment fluid can be replaced according to the type of anesthetic exhaust gas.

[0033] When dust or other impurities enter the suction box 3, it can be rotated to unscrew it from the threaded cavity a204 at the top of the threaded connecting block 2, separating the threaded connecting block 2 and the suction box 3. This facilitates the cleaning of dust or other impurities from the threaded cavity a204, the suction box 3, and the air duct 201. Furthermore, the sealing rings a206 and b207 prevent gas and liquid leakage.

[0034] The filter frame 4 has a slot 405 on one side and a through hole 404 on the other side. The purification box 1 has a squeezing chamber 5 and an installation cavity 504 inside. The purification box 1 has a pressure sensor 505, a microcontroller 507, and a buzzer 506 inside. The squeezing chamber 5 has a squeezing plate 501 inside. A squeezing rod 502 is fixedly connected to one side of the squeezing plate 501. A spring 503 is sleeved on the outside of the squeezing rod 502.

[0035] When the coarse filter 401, fine filter 402, or activated carbon filter 403 becomes clogged, preventing the gas entering the purification box 1 from escaping normally, the gas gradually accumulates inside the purification box 1, causing the internal air pressure to increase. When the air pressure reaches a certain level, the gas pushes the extrusion plate 501 to compress the spring 503, which in turn drives the extrusion rod 502 to compress the pressure sensor 505. The pressure sensor 505 generates an electrical signal, which is transmitted to the microcontroller 507. The microcontroller 507 then activates the buzzer 506 to emit a beeping sound, thus reminding the staff to replace the coarse filter 401, fine filter 402, or activated carbon filter 403.

[0036] In addition, the pressure sensor 505 is a piezoelectric pressure sensor, model number 8507C-1. When external pressure is applied to the sensor, the piezoelectric element inside the pressure sensor 505 deforms and generates a corresponding charge. These charges are detected and amplified by appropriate electronic circuits, and finally a voltage or current signal output proportional to the input pressure is obtained, thereby activating the buzzer 506 to emit an alarm sound. The pressure sensor 505 is electrically connected to the microcontroller 507, and the microcontroller 507 is electrically connected to the buzzer 506.

[0037] The working principle is as follows:

[0038] In use, the motor 302 and solenoid valve 202 can be turned on by the button switch on one side of the air extraction box 3. The motor 302 drives the rotating shaft 303 and fan blade 304 to rotate, so that the outside air passes through the ventilation net 301, enters the space between the air extraction box 3 and the threaded connecting block 2, and enters the treatment liquid inside the purification box 1 through the air guide pipe 201 and multiple air outlets 203. At this time, the anesthetic exhaust gas is filtered by the treatment liquid. Then, the filtered gas passes through the coarse filter 401, the fine filter 402 and the activated carbon filter 403 in sequence, so that the particulate matter in the exhaust gas is filtered out layer by layer, and then discharged to the outside through the exhaust pipe 208.

[0039] Furthermore, when filtration is complete, press the button switch on one side of the air extraction box 3 again to shut off the motor 302 and the solenoid valve 202. At this time, the solenoid valve 202 can prevent the treatment liquid from flowing into the air extraction box 3 through the air guide pipe 201, and the water stop valve on the air outlet pipe 208 can prevent the treatment liquid from leaking out through the air outlet pipe 208.

[0040] When the coarse filter 401, fine filter 402, or activated carbon filter 403 becomes clogged, preventing the gas entering the purification box 1 from escaping normally, the gas gradually accumulates inside the purification box 1, causing the internal air pressure to increase. When the air pressure reaches a certain level, the gas pushes the extrusion plate 501 to compress the spring 503, which in turn drives the extrusion rod 502 to compress the pressure sensor 505. The pressure sensor 505 generates an electrical signal, which is transmitted to the microcontroller 507. The microcontroller 507 then activates the buzzer 506 to emit a beeping sound, thus reminding the staff to replace the coarse filter 401, fine filter 402, or activated carbon filter 403.

[0041] Furthermore, when it is necessary to replace the coarse filter 401, fine filter 402, or activated carbon filter 403, the threaded connecting block 2 and the extraction box 3 can be rotated so that the bottom of the threaded connecting block 2 is unscrewed from the top of the extraction box 3. Then, the threaded connecting block 2 and the extraction box 3 are pulled up so that the bottom of the air guide pipe 201 is pulled out from the multiple perforations 406, thereby separating the purification box 1 from the threaded connecting block 2. Then, the filter frame 4 is pulled up to remove the filter frame 4 and replace the treatment fluid inside the threaded connecting block 2. Next, a new filter frame 4 is taken out, and the two inserts 407 at the bottom of the filter frame 4 are inserted into the corresponding slots 101 so that the slot opening 405 corresponds to the extrusion chamber 5. Then, the purification box 1 is screwed into the threaded cavity b205 to complete the replacement of the coarse filter 401, fine filter 402, or activated carbon filter 403. In addition, the treatment fluid can be replaced according to the type of anesthetic exhaust gas.

[0042] When dust or other impurities enter the air extraction box 3, the air extraction box 3 can be rotated to unscrew it from the threaded cavity a204 at the top of the threaded connecting block 2, thus separating the threaded connecting block 2 and the air extraction box 3. This facilitates the cleaning of dust or other impurities inside the threaded cavity a204, the air extraction box 3, and the air duct 201. In addition, the sealing rings a206 and b207 prevent gas and liquid leakage.

[0043] The control program involved in this utility model can be implemented by those skilled in the art based on the same or similar principles in the prior art, and this part is not the innovation of this utility model.

[0044] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0045] The foregoing has provided a detailed description of an anesthetic waste gas extraction and purification device according to the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A device for extracting and purifying anesthetic waste gas, characterized in that, include: Purification box (1), the top of the purification box (1) is provided with a threaded connecting block (2), the top of the threaded connecting block (2) is provided with an air extraction box (3), and the inside of the purification box (1) is provided with a filter frame (4). A disassembly assembly is provided between the purification box (1) and the extraction box (3), the disassembly assembly including: threaded cavity a (204), threaded cavity b (205), sealing ring a (206), sealing ring b (207) and filter frame (4); An alarm assembly is provided inside the purification box (1), the alarm assembly including: a squeeze plate (501), a spring (503), a squeeze rod (502), a pressure sensor (505), a microcontroller (507), and a buzzer (506).

2. The anesthetic waste gas extraction and purification device according to claim 1, characterized in that, The threaded connecting block (2) has a threaded cavity a (204) at the top and a threaded cavity b (205) at the bottom. Internal threads are formed inside both the threaded cavity a (204) and the threaded cavity b (205). A duct (201) is fixedly connected inside the threaded connecting block (2). A solenoid valve (202) is fixedly installed on the duct (201). Multiple air outlets (203) are formed on the outer side of the duct (201). An external thread that mates with the internal thread of the threaded cavity a (204) is provided on the outer side of the extraction box (3). The air box (3) is threadedly connected to the threaded cavity a (204). The outer side of the threaded connecting block (2) is provided with an external thread that matches the internal thread of the threaded cavity b (205). The threaded connecting block (2) is threadedly connected to the threaded cavity b (205). Two slots (101) are opened at the bottom of the inner wall of the purification box (1). An air outlet pipe (208) is connected to one side of the purification box (1). A water stop valve is provided on the air outlet pipe (208). A motor (302) is fixedly installed inside the air extraction box (3). Two ventilation nets (301) are fixedly installed on the top of the air extraction box (3).

3. The anesthetic waste gas extraction and purification device according to claim 2, characterized in that, A sealing ring b (207) is fixedly installed inside the threaded cavity a (204), and a sealing ring a (206) is fixedly installed inside the threaded cavity b (205).

4. The anesthetic waste gas extraction and purification device according to claim 2, characterized in that, The bottom of the filter frame (4) is fixedly connected to two inserts (407). A coarse filter (401) is fixedly installed inside the filter frame (4). A fine filter (402) is fixedly installed on the top of the coarse filter (401). An activated carbon filter (403) is fixedly installed on the top of the fine filter (402). The top of the coarse filter (401), the fine filter (402) and the activated carbon filter (403) are all provided with perforations (406). A sealing ring c (408) is fixedly installed inside each of the perforations (406). The bottom end of the air guide pipe (201) passes through the perforations (406).

5. The anesthetic waste gas extraction and purification device according to claim 2, characterized in that, The bottom of the motor (302) is connected to a rotating shaft (303) via a rotating shaft drive, and multiple fan blades (304) are provided on the outside of the rotating shaft (303).

6. The anesthetic waste gas extraction and purification device according to claim 1, characterized in that, The filter frame (4) has a slot (405) on one side and a through hole (404) on one side. The purification box (1) has a squeezing chamber (5) inside and an installation chamber (504) inside. The purification box (1) has a pressure sensor (505) installed inside and a microcontroller (507) installed inside. The purification box (1) has a buzzer (506) installed inside.

7. The anesthetic waste gas extraction and purification device according to claim 6, characterized in that, The extrusion chamber (5) is provided with an extrusion plate (501), and an extrusion rod (502) is fixedly connected to one side of the extrusion plate (501). A spring (503) is sleeved on the outside of the extrusion rod (502).

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