Exhaust emission device for breathing machine

Abstract

The invention relates to an exhaust gas emission device for a breathing machine, which comprises an expiration pipeline, an exhaust pipeline, an exhaust pipeline, an exhaust pipeline, a gas outlet pipeline and a gas outlet pipeline, and the two ends of the expiration pipeline are respectively provided with a connecting pipe; a valve connector is arranged at one end of the exhalation valve, the valve connector is communicated with the connecting pipe, away from the exhalation access end, of the exhalation pipeline and used for controlling exhalation in the exhalation pipeline to flow in one direction, and a waste gas guiding and conveying pipe is arranged at the end, away from the valve connector, of the exhalation valve. A waste gas discharge pipeline is arranged at one end of the waste gas guide pipe; the filtering mechanism comprises a filtering bin arranged between the valve connector and the connecting pipe, a plurality of sets of filtering layers arranged in the filtering bin, a stabilizing frame used for stabilizing the filtering layers in the filtering bin and a jacking mechanism used for adjusting the stabilizing frame in the filtering bin. The exhaust emission stability and the filtering effect can be improved, and the exhaust emission safety is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of exhaust gas emission of a ventilator, and in particular to an exhaust gas emission device for a ventilator. Background Art

[0002] Currently, the use of ventilators plays a vital role in maintaining patients' respiratory function. With the continuous advancement of medical technology, the performance and functions of ventilators have been significantly improved, providing effective respiratory support for many patients.

[0003] A common method for treating exhaled waste gas from a ventilator is to directly connect the exhalation tube to a simple exhaust pipe and discharge the patient's exhaled gas into the room without any special control or treatment of the waste gas. If the patient has an infectious disease or carries medication in the tube, this method can easily cause secondary contamination in the room. Some practices also install simple valves on the exhalation tube to control the flow of gas, but such valves often only have basic opening and closing functions and cannot accurately guarantee the one-way flow of gas. To filter impurities in the exhaust gas, some existing methods involve placing a small amount of filter material in the pipeline. These filter materials lack a stable fixed structure and are easily displaced or even damaged by the impact of the airflow. In addition, the operation of replacing the filter material is very inconvenient and usually requires a complicated disassembly and installation process. Ordinary exhaust methods that discharge exhaust gas into the room are prone to secondary pollution. Ordinary exhaust methods and simple valves cannot effectively guarantee the one-way flow of exhaled air, which may cause exhaust gas to flow back and cause cross contamination.

[0004] In view of the above-mentioned related technologies, it is necessary to propose an exhaust gas discharge device for a ventilator to solve one of the above-mentioned technical problems. Summary of the Invention

[0005] In order to solve one of the above technical problems, the present application provides an exhaust gas discharge device for a ventilator.

[0006] The present application provides an exhaust gas discharge device for a ventilator, which adopts the following technical solution: An exhaust gas discharge device for a ventilator, comprising: An exhalation line, with connecting pipes at both ends for exhalation access flow; An exhalation valve, one end of which is provided with a valve connector, which is connected to the connecting pipe of the exhalation pipeline away from the exhalation access end and is used to unidirectionally control the unidirectional flow of exhaled gas in the exhalation pipeline. The end of the exhalation valve away from the valve connector is provided with an exhaust gas guide pipe, and one end of the exhaust gas guide pipe is provided with an exhaust gas discharge pipeline; A filtering mechanism is used to filter the incoming exhaled air, and the filtering mechanism includes a filter bin arranged between the valve connector and the connecting pipe, several groups of filter layers arranged in the filter bin, a stabilization frame for stabilizing the filter layer in the filter bin, and a lifting mechanism for adjusting the stabilization frame in the filter bin. Snap-fit pieces are provided around the interior of the stabilization frame, and the snap-fit pieces are used to limit the filter layer on the stabilization frame. The lifting mechanism is arranged at the bottom end of the interior of the filter bin, and the lifting part of the lifting mechanism is connected to the bottom of the stabilization frame.

[0007] By adopting the above technical solution, the pipes at both ends of the exhalation pipeline can easily realize the access and flow of exhalation, and the exhalation valve can unidirectionally control the unidirectional flow of exhalation in the exhalation pipeline to ensure that the exhaust gas is transported in a specific direction; the filtering mechanism is arranged between the valve joint and the pipe, and several groups of filter layers are arranged in the filter chamber, which can filter the inflowing exhalation and remove impurities and harmful substances therein; the stabilization frame limits the filter layer through the clamping pieces around the inside to ensure that the filter layer remains stable in the filter chamber; the lifting mechanism is arranged at the bottom end of the filter chamber, and its lifting part is connected to the bottom of the stabilization frame, which can adjust the position of the stabilization frame in the filter chamber, which is convenient for maintenance, replacement and other operations of the filter layer, thereby improving the stability and filtering effect of the entire exhaust gas emission device, and effectively ensuring the safety and reliability of exhaust gas emissions.

[0008] Optionally, a replacement port is provided at the top of the filter bin, and the stabilization frame can be lifted out of the replacement port. An isolation mechanism is provided at the top of the filter bin corresponding to the replacement port, for isolating the filter bin from gas flow to the external environment. The isolation mechanism includes fasteners distributed around the replacement port and an elastic bag that seals the replacement port. The port of the elastic bag is pulled to the fastener, and the port edge of the elastic bag is fastened by the fastener.

[0009] By adopting the above technical solution, the replacement port opened at the top of the filter bin facilitates the stabilizing frame to be lifted out of the filter bin for replacing the filter layer; the isolation mechanism arranged at the corresponding replacement port on the top of the filter bin can effectively isolate the gas in the filter bin from flowing to the external environment; specifically, the elastic bag in the isolation mechanism can seal the replacement port, and its port is pulled to the fasteners distributed around the replacement port, and the fasteners are used to fasten the edge of the elastic bag port, which makes the elastic bag fit tightly around the replacement port, thereby preventing the gas in the filter bin from leaking into the external environment, ensuring the safety of the external environment, and avoiding the spread of harmful gases such as exhaust gas, that is, during the lifting process of the replacement port, the stabilizing frame is always lifted to the inside of the elastic bag, and the tension of the elastic bag is maintained by the fasteners. When the stabilizing frame is completely out, the fastener releases the edge of the port of the elastic bag, so that the port of the elastic bag contracts due to the elastic force, wrapping the stabilizing frame, and preventing medical staff from directly contacting the stabilizing frame and the filter layer.

[0010] Optionally, the fastener includes a bracket arranged on the top of the filter bin, a clamping cylinder arranged on the bracket, and a clamping block for tightening the edge of the elastic bag port. The output end of the clamping cylinder is provided with a connecting rod, and the top of the clamping block is provided at the rod head of the connecting rod. The clamping block at the connecting rod is driven by the output end of the clamping cylinder to clamp and tighten the edge of the elastic bag port.

[0011] By adopting the above technical solution, when the edge of the elastic bag port needs to be tightened, the output end of the clamping cylinder is actuated, driving the connecting rod to move, thereby causing the clamping block at the connecting rod to apply pressure to the edge of the elastic bag port and tighten it. This structural design enables the edge of the elastic bag port to be firmly fixed at the replacement port on the top of the filter bin, effectively preventing the gas in the filter bin from leaking to the external environment, improving the sealing and reliability of the exhaust gas emission device, and ensuring safety and stability during use.

[0012] Optionally, a protective plate for opening and closing the replacement port is further included, a support seat is provided at the top of the filter bin, an opening and closing cylinder is provided on one side of the support seat, a connecting block is provided at the output end of the opening and closing cylinder, and the connecting block is connected to the side of the protective plate.

[0013] By adopting the above technical solution, the support seat at the top of the filter bin provides stable support for the opening and closing cylinder. When the replacement port needs to be opened or closed, the opening and closing cylinder is started, and its output end pushes the connecting block to move, and the connecting block drives the protective plate to move, thereby realizing the opening or closing action of the protective plate on the replacement port. This design can flexibly control the opening and closing state of the replacement port, thereby preventing external impurities from entering the filter bin when the filter layer does not need to be replaced or the exhaust gas in the filter bin from leaking out from the replacement port, thereby ensuring the high efficiency and reliability of exhaust gas treatment.

[0014] Optionally, the lifting mechanism includes a driving seat passing through the bottom end of the filter bin, a lifting cylinder arranged on the driving seat, and a lifting plate serving as a lifting part, the bottom of the lifting plate being connected to the output end of the lifting cylinder, and the top of the lifting plate being in contact with the bottom of the stabilization frame for lifting the stabilization frame.

[0015] By adopting the above technical solution, when the lifting cylinder is working, its output end will generate an upward thrust; the lifting plate serves as the lifting part, and its bottom is connected to the output end of the lifting cylinder, which can bear the thrust of the lifting cylinder; the top of the lifting plate is in contact with the bottom of the stabilizing frame, and when the output end of the lifting cylinder moves upward, it can push the lifting plate to move upward, and then lift the stabilizing frame, so that the stabilizing frame can be smoothly lifted out of the replacement port opened on the top of the filter bin, thereby replacing the stabilizing frame and the filter layer, and the size of the lifting plate is adapted to the inner diameter of the replacement port, and the lifting plate forms a blockage for the replacement port.

[0016] Optionally, an electromagnet is provided on the top of the lifting plate, and a magnetic sheet is provided on the bottom of the stabilization frame, and the electromagnet is magnetically attracted to the magnetic sheet when power is supplied.

[0017] By adopting the above technical solution, when the electromagnet is energized, a magnetic field is generated, and the characteristics of the magnetic field are used to attract each other with the magnetic sheet at the bottom of the stabilization frame, so that the electromagnet and the magnetic sheet are tightly adsorbed together; this adsorption effect can maintain a stable connection between the lifting plate and the stabilization frame during the process of lifting the stabilization frame, avoiding shaking, offsetting, etc. of the stabilization frame during the lifting process, ensuring that the stabilization frame can be lifted smoothly. After power is cut off, the magnetism of the electromagnet disappears, making it easy to separate the stabilization frame from the lifting plate, and then facilitate the wrapping and replacement of the stabilization frame and the filter layer.

[0018] Optionally, adhesive patches are provided on the front and back surfaces of the clamping piece, and the clamping piece is adhesively connected to the side surface of the filter layer and the inner side of the stabilizing frame respectively through the adhesive patches.

[0019] By adopting the above technical solution, the filter layer can be more firmly limited on the stabilizing frame, preventing the filter layer from shaking or shifting in the stabilizing frame, ensuring the stability of the filter layer in the filter chamber, and thus improving the filtering effect on exhaled air.

[0020] Optionally, it also includes a combination mechanism for connecting the exhaust gas guiding pipe and the exhaust gas emission pipe, the combination mechanism includes a combination pipe, the two ends of the combination pipe are respectively connected to the exhaust gas guiding pipe and one end of the exhaust gas emission pipe, and rubber rings are provided on the outer surfaces of the two ends of the combination pipe, and the outer surface of the rubber ring is in contact with the inner wall of one end of the exhaust gas guiding pipe and the exhaust gas emission pipe.

[0021] By adopting the above technical solution, when the combined pipe is inserted into the exhaust gas guide pipe and the exhaust gas exhaust pipe, the rubber ring is squeezed and deformed, filling the gap between the combined pipe and the connection between the two, enhancing the sealing of the connection, and effectively preventing exhaled air from leaking at the connection part, ensuring that the exhaust gas can smoothly flow from the exhaust gas guide pipe through the combined pipe into the exhaust gas exhaust pipe, thereby improving the reliability and stability of the entire exhaust gas emission.

[0022] Optionally, clamping semi-arc rings are provided on the upper and lower surfaces of both ends of the combined pipe, and the clamping semi-arc rings are locked by bolts to lock the two ends of the combined pipe with the connection between the exhaust gas guide pipe and one end of the exhaust gas discharge pipe.

[0023] By adopting the above technical solution and using the clamping semi-arc ring and bolt locking, the connection between the combined pipe and the exhaust gas guide pipe and the exhaust gas emission pipeline can be made more secure, avoiding loose connections that lead to exhaust gas leakage, and ensuring the stability and sealing of exhaust gas emissions.

[0024] Optionally, a mounting sleeve is provided inside the combined tube, and a flow sensor is provided on the mounting sleeve for monitoring the flow of exhaled air.

[0025] By adopting the above technical solution, the flow of exhaled air in the combined pipe can be monitored in real time, so as to accurately control the exhaust gas emission process.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The exhalation pipe is used to connect the exhalation air flow, and then cooperates with the exhalation valve. The exhalation valve is connected to the exhalation pipe pipe through the valve connector, which can achieve one-way control of the exhalation in the exhalation pipe, effectively preventing the waste gas from flowing back into the exhalation pipe. The filter mechanism is used to filter the exhaled air, and the filter layer is limited by the stabilizing frame and the card plate, so it will not be displaced or damaged by the impact of the airflow, thereby improving the filtering effect. 2. A replacement port is located at the top of the filter compartment, equipped with an isolation mechanism and a lifting mechanism. During the lifting process, the stabilization frame is lifted into the elastic bag, and the elastic bag is kept taut by a fastener. When the stabilization frame is completely removed, the fastener releases the edge of the elastic bag's port, causing the elastic force to contract, enveloping the stabilization frame and preventing medical staff from directly contacting the stabilization frame and the filter layer. 3. The combined mechanism connects the exhaust gas guide pipe to the exhaust gas discharge pipe, and is equipped with a rubber ring, a clamping semi-arc ring, etc., so that the connection is tight and the exhalation flow can be monitored by a flow sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional view of an exhaust gas exhaust device for a ventilator in this application.

[0028] Figure 2 This is a structural schematic diagram of a filtering mechanism for an exhaust gas discharge device of a ventilator in this application.

[0029] Figure 3 This is a first-perspective structural diagram of a filter chamber, a lifting mechanism, and fasteners of an exhaust gas discharge device for a ventilator in the present application.

[0030] Figure 4 yes Figure 3 A schematic diagram of the structure from the second perspective.

[0031] Figure 5 yes Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0032] Figure 6 This is a top view of an exhaust gas discharge device (with a combined mechanism) for a ventilator in this application.

[0033] Figure 7 yes Figure 6 A magnified schematic diagram of the structure at point B.

[0034] In the figure: 1. Exhalation pipe; 11. Connecting pipe; 2. Exhalation valve; 21. Valve connector; 22. Exhaust gas guide pipe; 23. Exhaust gas discharge pipe; 3. Filter mechanism; 31. Filter chamber; 32. Filter layer; 33. Stabilizing frame; 331. Magnetic sheet; 34. Lifting mechanism; 341. Drive seat; 342. Lifting cylinder; 343. Lifting plate; 344. Electromagnet; 35. Snap-on sheet; 351. Adhesive patch; 36. Replacement port; 4. Isolating mechanism; 41. Fastener; 411. Bracket; 412. Clamping cylinder; 413. Clamping block; 414. Connecting rod; 42. Elastic bag; 5. Protective plate; 6. Support seat; 61. Opening and closing cylinder; 62. Connecting block; 7. Combination mechanism; 71. Combination pipe; 72. Rubber ring; 73. Clamping semi-arc ring; 8. Mounting sleeve; 81. Flow sensor. DETAILED DESCRIPTION

[0035] The following is combined with the accompanying drawings Figure 1-Figure 7 This application is described in further detail.

[0036] Example 1, reference Figure 1-Figure 5 , an embodiment of the present application discloses an exhaust gas discharge device for a ventilator, comprising: an exhalation circuit 1, an exhalation valve 2 and a filtering mechanism 3.

[0037] Both ends of the exhalation pipe 1 are provided with a connecting pipe 11 for the flow of exhaled air; one end of the exhalation valve 2 is provided with a valve connector 21, which is connected to the connecting pipe 11 of the exhalation pipe 1 away from the exhalation access end, and is used to unidirectionally control the unidirectional flow of exhaled air in the exhalation pipe 1. The end of the exhalation valve 2 away from the valve connector 21 is provided with an exhaust gas guide pipe 22, and one end of the exhaust gas guide pipe 22 is provided with an exhaust gas discharge pipe 23; the filtering mechanism 3 is used to filter the incoming exhaled air, and the filtering mechanism 3 includes a filter provided at the valve connector. 21 and the connecting pipe 11, a filter chamber 31 between, several groups of filter layers 32 arranged in the filter chamber 31, a stabilization frame 33 for stabilizing the filter layer 32 in the filter chamber 31 and a jacking mechanism 34 for adjusting the stabilization frame 33 in the filter chamber 31, the interior of the stabilization frame 33 is provided with snap-fit pieces 35 around, the snap-fit pieces 35 are used to limit the filter layer 32 on the stabilization frame 33, the jacking mechanism 34 is provided at the bottom end of the interior of the filter chamber 31, and the jacking part of the jacking mechanism 34 is connected to the bottom of the stabilization frame 33.

[0038] The connecting pipes 11 at both ends of the exhalation pipe 1 can conveniently realize the access and flow of exhalation, and the exhalation valve 2 can unidirectionally control the unidirectional flow of exhalation in the exhalation pipe 1 to ensure that the exhaust gas is transported in a specific direction; the filtering mechanism 3 is arranged between the valve connector 21 and the connecting pipe 11, and several groups of filter layers 32 are arranged in the filter chamber 31, which can filter the inflowing exhalation air and remove impurities and harmful substances therein; the stabilizing frame 33 limits the filter layer 32 through the internal clamping pieces 35 to ensure that the filter layer 32 remains stable in the filter chamber 31; the lifting mechanism 34 is arranged at the bottom end of the filter chamber 31, and its lifting part is connected to the bottom of the stabilizing frame 33, and the position of the stabilizing frame 33 in the filter chamber 31 can be adjusted, which is convenient for maintenance, replacement and other operations of the filter layer 32, thereby improving the stability and filtering effect of the entire exhaust gas emission device, and effectively ensuring the safety and reliability of exhaust gas emissions.

[0039] refer to Figure 2 and Figure 3 The stabilizing frame 33 can be lifted out of the replacement port 36 in the present embodiment, and an isolation mechanism 4 is provided on the top of the filter bin 31 corresponding to the replacement port 36, for isolating the filter bin 31 from the gas flowing into the external environment. The isolation mechanism 4 includes fasteners 41 distributed around the replacement port 36 and an elastic bag 42 for blocking the replacement port 36. The port of the elastic bag 42 is pulled to the fastener 41, and the port edge of the elastic bag 42 is fastened by the fastener 41. The replacement port 36 opened on the top of the filter bin 31 facilitates the stabilizing frame 33 to lift out of the filter bin 31 to perform the replacement operation of the filter layer 32; the isolation mechanism 4 provided on the top of the filter bin 31 corresponding to the replacement port 36 can effectively isolate the gas in the filter bin 31 from flowing into the external environment; specifically, the isolation mechanism 4 The elastic bag 42 in the mechanism 4 can block the replacement port 36, and its port is pulled to the fasteners 41 distributed around the replacement port 36. The fasteners 41 are used to fasten the edge of the port of the elastic bag 42, which makes the elastic bag 42 fit tightly around the replacement port 36, thereby preventing the gas in the filter chamber 31 from leaking into the external environment, ensuring the safety of the external environment, and avoiding the spread of harmful gases such as exhaust gas. That is, during the lifting process of the replacement port 36, the stabilization frame 33 is always lifted to the inside of the elastic bag 42, and the tension of the elastic bag 42 is maintained by the fasteners 41. When the stabilization frame 33 is completely out, the fasteners 41 release the edge of the port of the elastic bag 42, so that the port of the elastic bag 42 contracts due to elastic force, wrapping the stabilization frame 33, and preventing medical staff from directly contacting the stabilization frame 33 and the filter layer 32.

[0040] In this embodiment, more specifically, several filter layers 32 are selected from medical non-woven fabric layers, polypropylene fiber layers and activated carbon fiber layers. The medical non-woven fabric layer has good air permeability and filtering performance, and can effectively filter larger particles, such as dust and droplets, and play a role in preliminary filtration. The polypropylene fiber layer mainly filters particles and microorganisms in the exhaust gas through physical interception and electrostatic adsorption; the polypropylene fiber layer has good air permeability and chemical stability, and can effectively filter bacteria, viruses, microorganisms and tiny particles; its fiber diameter is fine, the specific surface area is large, the filtration efficiency is high, and it is not easy to react chemically with other substances, ensuring the safety of the use process; the activated carbon fiber has a porous structure and strong adsorption properties, and can effectively adsorb organic matter and some inorganic matter in the exhaust gas, such as carbon dioxide and anesthetic drug residues; it has a strong adsorption capacity for harmful gases and odors in the exhaust gas, and can also adsorb a certain amount of water vapor to reduce the humidity in the exhaust gas, thereby realizing the combined use of exhaust gas filtration.

[0041] refer to Figure 4 and Figure 5 In this embodiment, more specifically, the fastener 41 includes a bracket 411 arranged on the top of the filter bin 31, a pressing cylinder 412 arranged on the bracket 411, and a pressing block 413 for fastening the edge of the elastic bag 42 port. The output end of the pressing cylinder 412 is provided with a connecting rod 414, and the top of the pressing block 413 is provided on the rod head of the connecting rod 414. The output end of the pressing cylinder 412 drives the pressing block 413 at the connecting rod 414 to press and fasten the edge of the elastic bag 42 port. When the elastic bag needs to be tightened, When the edge of the port 42 is tightened, the output end of the clamping cylinder 412 is actuated, driving the connecting rod 414 to move, thereby causing the clamping block 413 at the connecting rod 414 to apply pressure to the edge of the port of the elastic bag 42 and compress it tightly. This structural design enables the edge of the port of the elastic bag 42 to be firmly fixed at the replacement port 36 at the top of the filter bin 31, effectively preventing the gas in the filter bin 31 from leaking to the external environment, improving the sealing and reliability of the exhaust gas emission device, and ensuring safety and stability during use.

[0042] refer to Figure 4 and Figure 5, in this embodiment, more specifically, it also includes a protective plate 5 for opening and closing the replacement port 36, a support seat 6 is provided at the top of the filter bin 31, and an opening and closing cylinder 61 is provided on one side of the support seat 6, and a connecting block 62 is provided at the output end of the opening and closing cylinder 61, which is connected to the side of the protective plate 5, and the support seat 6 at the top of the filter bin 31 provides stable support for the opening and closing cylinder 61. When it is necessary to open or close the replacement port 36, the opening and closing cylinder 61 is started, and its output end pushes the connecting block 62 to move, and the connecting block 62 drives the protective plate 5 to move, thereby realizing the opening or closing action of the protective plate 5 on the replacement port 36; this design can flexibly control the opening and closing state of the replacement port 36, thereby preventing external impurities from entering the filter bin 31 when the filter layer 32 does not need to be replaced or the exhaust gas in the filter bin 31 from leaking out from the replacement port 36, thereby ensuring the high efficiency and reliability of exhaust gas treatment.

[0043] refer to Figure 4 In this embodiment, more specifically, the lifting mechanism 34 includes a driving seat 341 that penetrates the bottom end of the inner part of the filter bin 31, a lifting cylinder 342 provided on the driving seat 341, and a lifting plate 343 as a lifting part. The bottom of the lifting plate 343 is connected to the output end of the lifting cylinder 342, and the top of the lifting plate 343 contacts the bottom of the stabilizing frame 33 for lifting the stabilizing frame 33. When the lifting cylinder 342 works, its output end generates an upward thrust; the lifting plate 343 serves as the lifting part, and its bottom is connected to the lifting cylinder 34 2 is connected to the output end of the jacking cylinder 342, which can bear the thrust of the jacking cylinder 342; the top of the jacking plate 343 is in contact with the bottom of the stabilizing frame 33. When the output end of the jacking cylinder 342 moves upward, the jacking plate 343 can be pushed to move upward, thereby lifting the stabilizing frame 33, so that the stabilizing frame 33 can be smoothly lifted out of the replacement port 36 opened at the top of the filter bin 31, thereby replacing the stabilizing frame 33 and the filter layer 32, and the size of the jacking plate 343 is adapted to the inner diameter of the replacement port 36, and the jacking plate 343 forms a blockage for the replacement port 36.

[0044] refer to Figure 2 and Figure 3When the electric magnet 344 is energized, it will generate a magnetic field, which will attract the magnetic sheet 331 at the bottom of the stabilization frame 33, so that the electromagnet 344 and the magnetic sheet 331 are tightly adsorbed together; this adsorption effect can keep the lifting plate 343 firmly connected with the stabilization frame 33 during the lifting process, thereby preventing the stabilization frame 33 from shaking or deflecting during the lifting process, and ensuring that the stabilization frame 33 can be lifted smoothly. After the power is turned off, the magnetism of the electromagnet 344 disappears, which facilitates the separation of the stabilization frame 33 from the lifting plate 343, and then facilitates the wrapping and replacement of the stabilization frame 33 and the filter layer 32.

[0045] refer to Figure 2 In this embodiment, more specifically, adhesive stickers 351 are provided on the front and back surfaces of the snap-in piece 35. The snap-in piece 35 is adhered and connected to the side surface of the filter layer 32 and the inner side of the stabilization frame 33 through the adhesive stickers 351, respectively. This enables the filter layer 32 to be more firmly positioned on the stabilization frame 33, thereby preventing the filter layer 32 from shaking or shifting in the stabilization frame 33, ensuring the stability of the filter layer 32 in the filter chamber 31, and thus improving the filtering effect on exhaled air.

[0046] The implementation principle of the exhaust gas discharge device for a ventilator in an embodiment of the present application is as follows: the exhaust gas exhaled by the patient is introduced through the exhalation pipe 1, and the exhalation valve 2 ensures the unidirectional flow of the exhaled gas to prevent the exhaust gas from flowing back and causing cross contamination; the filter layer 32 in the filter mechanism 3 can effectively filter impurities and harmful substances in the exhaust gas to avoid secondary pollution; at the same time, the design of the stabilizing frame 33 and the lifting mechanism 34 of the filter mechanism 3 makes the replacement and maintenance of the filter layer 32 more convenient and quick, and the addition of the replacement port 36, the isolation mechanism 4 and the protective plate 5 makes it possible to better isolate the gas in the filter chamber 31 when replacing the filter layer 32, avoid leakage of exhaust gas to the external environment, and improve the safety during the replacement of the filter layer 32.

[0047] Example 2, reference Figure 6 and Figure 7The present embodiment differs from the first embodiment in that it further includes a combination mechanism 7 for connecting the exhaust gas guiding pipe 22 and the exhaust gas discharge pipe 23. The combination mechanism 7 includes a combination pipe 71. The two ends of the combination pipe 71 are respectively connected to one end of the exhaust gas guiding pipe 22 and the exhaust gas discharge pipe 23. Rubber rings 72 are provided on the outer surfaces of both ends of the combination pipe 71. The outer surface of the rubber ring 72 contacts the inner wall of one end of the exhaust gas guiding pipe 22 and the exhaust gas discharge pipe 23. When the combination pipe 71 is inserted into the exhaust gas guiding pipe 22 and the exhaust gas discharge pipe 23, the rubber ring 72 is squeezed and deformed, filling the gap between the combination pipe 71 and the connection between the two, thereby enhancing the sealing of the connection, effectively preventing exhaled air from leaking at the connection, ensuring that the exhaust gas can smoothly flow from the exhaust gas guiding pipe 22 through the combination pipe 71 into the exhaust gas discharge pipe 23, and improving the reliability and stability of the entire exhaust gas discharge.

[0048] refer to Figure 6 and Figure 7 In this embodiment, more specifically, clamping semi-arc rings 73 are provided on the upper and lower surfaces of both ends of the combined pipe 71. The clamping semi-arc rings 73 are locked by bolts to lock the two ends of the combined pipe 71 with the connection between the exhaust gas guiding pipe 22 and one end of the exhaust gas discharge pipe 23 respectively. By using the clamping semi-arc rings 73 and bolt locking, the connection between the combined pipe 71 and the exhaust gas guiding pipe 22 and the exhaust gas discharge pipe 23 can be made more secure, avoiding exhaust gas leakage caused by loose connections, and ensuring the stability and sealing of exhaust gas emissions.

[0049] refer to Figure 7 In this embodiment, more specifically, a mounting sleeve 8 is provided inside the combined tube 71, and a flow sensor 81 is provided on the mounting sleeve 8 for monitoring the flow of exhaled air passing through. The flow of exhaled air in the combined tube 71 can be grasped in real time, so as to accurately control the exhaust gas emission process.

[0050] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An exhaust gas discharge device for a ventilator, characterized in that ,include: An exhalation pipe (1), wherein both ends of the exhalation pipe (1) are provided with connecting pipes (11) for exhalation access flow; An exhalation valve (2), one end of the exhalation valve (2) is provided with a valve connector (21), the valve connector (21) is connected to the connecting pipe (11) of the exhalation pipeline (1) away from the exhalation access end, and is used for unidirectionally controlling the unidirectional flow of exhaled air in the exhalation pipeline (1), the end of the exhalation valve (2) away from the valve connector (21) is provided with an exhaust gas guide pipe (22), and one end of the exhaust gas guide pipe (22) is provided with an exhaust gas discharge pipe (23); A filter mechanism (3) is used for filtering the received exhaled air, the filter mechanism (3) comprising a filter chamber (31) arranged between the valve connector (21) and the connecting pipe (11), a plurality of filter layers (32) arranged in the filter chamber (31), a stabilizing frame (33) for stabilizing the filter layer (32) in the filter chamber (31), and a lifting mechanism (34) for adjusting the stabilizing frame (33) in the filter chamber (31), wherein the interior of the stabilizing frame (33) is provided with a snap-fit piece (35) around the periphery thereof, and the snap-fit piece (35) is used for limiting the position of the filter layer (32) on the stabilizing frame (33), and the lifting mechanism (34) is arranged at the bottom end of the interior of the filter chamber (31), and the lifting portion of the lifting mechanism (34) is connected to the bottom of the stabilizing frame (33).

2. The exhaust gas discharge device for a ventilator according to claim 1, characterized in that: A replacement port (36) is provided at the top of the filter chamber (31), and the stabilizing frame (33) can be lifted out of the replacement port (36). An isolation mechanism (4) is provided at the top of the filter chamber (31) corresponding to the replacement port (36), for isolating the filter chamber (31) from gas flow to the external environment. The isolation mechanism (4) includes fasteners (41) distributed around the replacement port (36) and an elastic bag (42) for sealing the replacement port (36). The port of the elastic bag (42) is pulled to the fastener (41), and the port edge of the elastic bag (42) is fastened by the fastener (41).

3. The exhaust gas discharge device for a ventilator according to claim 2, characterized in that: The fastener (41) comprises a bracket (411) arranged at the top of the filter bin (31), a pressing cylinder (412) arranged on the bracket (411), and a pressing block (413) for fastening the edge of the port of the elastic bag (42). The output end of the pressing cylinder (412) is provided with a connecting rod (414), and the top of the pressing block (413) is provided at the rod head of the connecting rod (414). The output end of the pressing cylinder (412) drives the pressing block (413) at the connecting rod (414) to press and fasten the edge of the port of the elastic bag (42).

4. The exhaust gas discharge device for a ventilator according to claim 2, characterized in that: It also includes a protective plate (5) for opening and closing the replacement port (36), a support seat (6) is provided at the top end of the interior of the filter chamber (31), an opening and closing cylinder (61) is provided on one side of the support seat (6), and a connecting block (62) is provided at the output end of the opening and closing cylinder (61), and the connecting block (62) is connected to the side of the protective plate (5).

5. The exhaust gas discharge device for a ventilator according to claim 1, characterized in that: The lifting mechanism (34) includes a driving seat (341) penetrating the bottom end of the filter bin (31), a lifting cylinder (342) arranged on the driving seat (341), and a lifting plate (343) serving as a lifting portion. The bottom of the lifting plate (343) is connected to the output end of the lifting cylinder (342), and the top of the lifting plate (343) contacts the bottom of the stabilizing frame (33) for lifting the stabilizing frame (33).

6. The exhaust gas discharge device for a ventilator according to claim 5, characterized in that: An electromagnet (344) is provided on the top of the lifting plate (343), and a magnetic attraction sheet (331) is provided on the bottom of the stabilizing frame (33). The electromagnet (344) and the magnetic attraction sheet (331) are magnetically attracted to each other when power is supplied.

7. The exhaust gas discharge device for a ventilator according to claim 1, characterized in that: Adhesive patches (351) are provided on both the front and rear sides of the snap-in piece (35), and the snap-in piece (35) is adhesively connected to the side surface of the filter layer (32) and the inner side of the stabilizing frame (33) via the adhesive patches (351).

8. The exhaust gas discharge device for a ventilator according to claim 1, characterized in that: The exhaust gas guide pipe (22) and the exhaust gas discharge pipe (23) are connected to each other. The exhaust gas guide pipe (22) and the exhaust gas discharge pipe (23) are connected to each other at both ends of the exhaust gas guide pipe (22) and the exhaust gas discharge pipe (23). The outer surfaces of the two ends of the exhaust gas guide pipe (22) and the exhaust gas discharge pipe (23) are provided with rubber rings (72). The outer surface of the rubber ring (72) contacts the inner wall of the exhaust gas guide pipe (22) and the inner wall of the exhaust gas discharge pipe (23).

9. The exhaust gas discharge device for a ventilator according to claim 8, characterized in that: Clamping semi-arc rings (73) are provided on the upper and lower surfaces of both ends of the combined pipe (71). The clamping semi-arc rings (73) are locked by bolts to lock the two ends of the combined pipe (71) with the connection between the exhaust gas guide pipe (22) and one end of the exhaust gas discharge pipe (23).

10. The exhaust gas discharge device for a ventilator according to claim 8, characterized in that: A mounting sleeve (8) is provided inside the combined tube (71), and a flow sensor (81) is provided on the mounting sleeve (8) for monitoring the flow of exhaled air.

Images