A medical gas filter

Abstract

This utility model discloses a medical gas filter, including a housing with a top cover and a bottom cover at both ends; it also includes a filtering mechanism and a cleaning mechanism. The filtering mechanism is located inside the housing, and the cleaning mechanism is connected to the bottom cover and the filtering mechanism for cleaning the filtering mechanism. This utility model not only allows for efficient cleaning of the filter, reducing the steps of disassembly and replacement, and ensuring airtightness, but also improves the filtration effect of the gas filter and extends its service life.

Description

Technical Field

[0001] This utility model relates to a medical gas filter. Background Technology

[0002] Medical gases are diverse, including oxygen and nitrogen. Their production processes are sometimes too crude, resulting in long storage and transportation times. They are supplied to the human body via central pipelines or medical gas injection equipment. These pipelines and equipment are easily contaminated by dust, particles, and bacteria, making cleaning extremely difficult and costly. Often, medical gases are supplied directly to medical use without filtration, posing a certain risk of infection, increasing patient medical expenses, and causing losses for hospitals.

[0003] Existing gas filters require disassembly and filter element replacement after use before they can be used again. This not only makes the filter element replacement process cumbersome, but also affects the airtightness and reduces the service life of the gas filter. Utility Model Content

[0004] The purpose of this utility model is to provide a technical solution for a medical gas filter that addresses the shortcomings of existing technologies. This solution not only allows for efficient cleaning of the filter, reduces the steps involved in disassembly and replacement, and ensures airtightness, but also improves the filtration effect of the gas filter and extends its service life.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A medical gas filter, comprising

[0007] The shell has a top cover and a bottom cover at each end;

[0008] Its features are:

[0009] It also includes a filtration mechanism and a cleaning mechanism. The filtration mechanism is located inside the housing, and the cleaning mechanism is connected to the bottom cover and the filtration mechanism for cleaning the filtration mechanism. Through the design of the above structure, not only can the filter be cleaned efficiently, reducing the steps of disassembling and replacing the filter and ensuring airtightness, but the filtration effect of the gas filter can also be improved and its service life extended.

[0010] Furthermore, the filtration mechanism includes a base plate, a cover plate, and a filter screen. The base plate is horizontally fixed inside the housing and has several through holes. The cover plate is fixed above each through hole by a column. A filter screen is installed between the cover plate, the column, and the base plate. The inner wall of the column is equipped with guide strips. The column can improve the connection strength and stability between the cover plate and the base plate, and at the same time improve the installation stability of the filter screen, ensuring that the gas flows upward through the through holes and flows out from the top after being filtered by the filter screen. The design of the guide strips can improve the stability and reliability of the cleaning head when moving up and down, and improve the cleaning effect on the filter screen.

[0011] Furthermore, the cleaning mechanism includes a motor, a transmission assembly, a drive shaft, a driven shaft, and cleaning blocks. The motor is connected to the bottom of the base cover via a support tube, and the motor's output shaft is connected to the drive shaft. The top end of the drive shaft is rotatably connected to the central cover plate. The bottom and top ends of the driven shaft are rotatably connected to the base cover and the surrounding cover plates, respectively. The drive shaft is connected to the driven shaft via the transmission assembly. The cleaning blocks are connected to both the drive and driven shafts and move up and down along the guide strips and filter screen. The motor drives the drive shaft to rotate, which in turn drives the driven shaft to rotate via a bevel gear set and the transmission assembly. This allows the cleaning blocks on the drive and driven shafts to move up and down synchronously along the filter screen, meeting the cleaning requirements of each filter screen and improving cleaning efficiency.

[0012] Furthermore, the cleaning block includes a disc body with threaded holes. Both the driving shaft and the driven shaft have external threads that match the threaded holes. Through the threaded connection, it can be ensured that the driving shaft and the driven shaft drive each cleaning block to move up and down during rotation.

[0013] Furthermore, the outer circumferential side of the cleaning block is provided with guide grooves and cleaning brushes. The guide grooves and cleaning brushes are spaced apart from each other, and the guide grooves are matched with guide strips. Through the design of the guide grooves and guide strips, it can be ensured that the cleaning block moves in the vertical direction, which in turn can drive the cleaning brush to move vertically, thus meeting the cleaning requirements of the filter screen.

[0014] Furthermore, the transmission assembly includes a support plate, a transmission rod, and a bevel gear set. The transmission rod is connected to the bottom cover via the support plate. The transmission rod is connected to both the driving shaft and the driven shaft via the bevel gear set. The support plate can improve the stability and reliability of the transmission rod during rotation, and the transmission rod can achieve synchronous rotation of the bevel gear sets at both ends.

[0015] Furthermore, the outer side of the housing is provided with an air inlet and a drain outlet, with the drain outlet located below the air inlet. Inside the housing, there is an inclined plate that is inclined downwards from the air inlet to the drain outlet. The design of the inclined plate ensures that when cleaning the filter screen, the impurities removed can slide down the inclined plate into the drain outlet, improving the drain efficiency and preventing impurities from flowing into the air inlet.

[0016] Furthermore, the air inlet connector is equipped with a first pressure sensor, and the top cover is equipped with an air outlet connector with a second pressure sensor. Both the first and second pressure sensors are electrically connected to an external controller. The pressure of the air inlet connector and the air outlet connector can be detected in real time through the first and second pressure sensors, and the filtration efficiency of the filter screen can be determined by the pressure difference.

[0017] Furthermore, the drain connector is equipped with a drain valve, which is used to control the opening and closing of the drain connector.

[0018] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0019] This invention not only enables efficient cleaning of filters, reduces the steps of filter disassembly and replacement, and ensures airtightness, but also improves the filtration effect of gas filters and extends their service life. Attached image description:

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the structure of a medical gas filter according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the filtration mechanism in this utility model;

[0024] Figure 4 This is a schematic diagram of the cleaning block in this utility model.

[0025] In the diagram: 1-House; 2-Top cover; 3-Bottom cover; 4-Inlet connector; 5-First pressure sensor; 6-Outlet connector; 7-Second pressure sensor; 8-Support pipe; 9-Motor; 10-Drain connector; 11-Drain valve; 12-Inclined plate; 13-Filter mechanism; 14-Driven shaft; 15-Driven shaft; 16-Support plate; 17-Transmission rod; 18-Bevel gear set; 19-Cleaning block; 20-Bottom plate; 21-Cover plate; 22-Column; 23-Filter screen; 24-Guide strip; 25-Disc; 26-Guide groove; 27-Threaded hole; 28-Cleaning brush. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0028] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0029] like Figures 1 to 4 As shown, this utility model discloses a medical gas filter, which includes a housing 1, and a top cover 2 and a bottom cover 3 at both ends of the housing 1.

[0030] The outer side of the housing 1 is provided with an air inlet connector 4 and a drain connector 10. The drain connector 10 is located below the air inlet connector 4. The housing 1 is provided with an inclined plate 12. The inclined plate 12 is inclined downward from the air inlet connector 4 to the drain connector 10. Through the design of the inclined plate 12, it can be ensured that when cleaning the filter screen 23, the impurities that are cleaned can slide down along the inclined plate 12 into the drain connector 10, thereby improving the drain efficiency and preventing impurities from flowing into the air inlet connector 4.

[0031] The air inlet connector 4 is equipped with a first pressure sensor 5, and the top cover 2 is equipped with an air outlet connector 6 with a second pressure sensor 7. Both the first pressure sensor 5 and the second pressure sensor 7 are electrically connected to an external controller. The pressure of the air inlet connector 4 and the air outlet connector 6 can be detected in real time through the first pressure sensor 5 and the second pressure sensor 7, and the filtration efficiency of the filter screen 23 can be determined by the pressure difference. The controller can be a PLC controller, and the first pressure sensor 5 and the second pressure sensor 7 can be SM9541-010C-DC-3-S.

[0032] The drain connector 10 is equipped with a drain valve 11, which is used to control the opening and closing of the drain connector 10. The drain valve 11 is electrically connected to a controller.

[0033] The filter also includes a filter mechanism 13 and a cleaning mechanism, with the filter mechanism 13 located inside the housing 1.

[0034] The filtration mechanism 13 includes a base plate 20, a cover plate 21, and a filter screen 23. The base plate 20 is horizontally fixed inside the housing 1 and has several through holes. The cover plate 21 is fixed above each through hole by a column 22. The filter screen 23 is provided between the cover plate 21, the column 22, and the base plate 20. The inner wall of the column 22 is provided with a guide strip 24. The column 22 can improve the connection strength and stability between the cover plate 21 and the base plate 20, and at the same time improve the installation stability of the filter screen 23, ensuring that the gas flows upward through the through holes and flows out from the top after being filtered by the filter screen 23. The design of the guide strip 24 can improve the stability and reliability of the cleaning head when it moves up and down, and improve the cleaning effect on the filter screen 23.

[0035] The cleaning mechanism is connected to the bottom cover 3 and the filter mechanism 13 and is used to clean the filter mechanism 13.

[0036] The cleaning mechanism includes a motor 9, a transmission assembly, a drive shaft 14, a driven shaft 15, and a cleaning block 19. The motor 9 is connected to the bottom of the bottom cover 3 via a support tube 8. The motor 9 is electrically connected to the controller. The output shaft of the motor 9 is connected to the drive shaft 14. The top end of the drive shaft 14 is rotatably connected to the cover plate 21 located in the center. The bottom and top ends of the driven shaft 15 are rotatably connected to the bottom cover 3 and the cover plates 21 around the perimeter, respectively. The drive shaft 14 is connected to the driven shaft 15 via the transmission assembly. The cleaning block 19 is connected to the drive shaft 14 and the driven shaft 15 and moves up and down along the guide bar 24 and the filter screen 23. The motor 9 drives the drive shaft 14 to rotate, which in turn drives the driven shaft 15 to rotate via the bevel gear set 18 and the transmission assembly. This allows the cleaning block 19 on the drive shaft 14 and the driven shaft 15 to move up and down synchronously along the filter screen 23, meeting the cleaning requirements of each filter screen 23 and improving cleaning efficiency.

[0037] The cleaning block 19 includes a disc body 25, on which a threaded hole 27 is provided. Both the driving shaft 14 and the driven shaft 15 are provided with external threads, which are matched with the threaded hole 27. Through the threaded connection, it can be ensured that the driving shaft 14 and the driven shaft 15 drive each cleaning block 19 to move up and down during rotation.

[0038] The outer circumferential side of the cleaning block 19 is provided with a guide groove 26 and a cleaning brush 28. The guide groove 26 and the cleaning brush 28 are spaced apart from each other. The guide groove 26 is matched with the guide strip 24. Through the design of the guide groove 26 and the guide strip 24, it can be ensured that the cleaning block 19 moves in the vertical direction, which in turn can drive the cleaning brush 28 to move vertically, thus meeting the cleaning requirements of the filter screen 23.

[0039] The transmission assembly includes a support plate 16, a transmission rod 17, and a bevel gear set 18. The transmission rod 17 is connected to the bottom cover 3 through the support plate 16. The transmission rod 17 is connected to both the driving shaft 14 and the driven shaft 15 through the bevel gear set 18. The support plate 16 can improve the stability and reliability of the transmission rod 17 when it rotates. The transmission rod 17 can realize the synchronous rotation of the bevel gear sets 18 at both ends.

[0040] The above structural design not only allows for efficient cleaning of the filter, reduces the steps of filter disassembly and replacement, and ensures airtightness, but also improves the filtration effect of the gas filter and extends its service life.

[0041] In actual use, the gas filter is first installed on the pipeline, and the first pressure sensor 5, the second pressure sensor 7, the motor 9 and the drain valve 11 are electrically connected to the controller. After the gas is supplied, the pressure difference between the inlet connector 4 and the outlet connector 6 is detected in real time by the first pressure sensor 5 and the second pressure sensor 7. When the pressure difference reaches the set threshold, the gas supply is stopped, the motor 9 is started, the drain valve 11 is opened, and the filter mechanism 13 is cleaned by the cleaning mechanism. The impurities after cleaning are discharged through the drain connector 10.

[0042] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to achieve essentially the same technical effect are all covered within the protection scope of this utility model.

Claims

1. A medical gas filter, comprising: The housing has a top cover and a bottom cover at its two ends; Its features are: It also includes a filtration mechanism and a cleaning mechanism. The filtration mechanism is located inside the housing, and the cleaning mechanism is connected to the bottom cover and the filtration mechanism for cleaning the filtration mechanism.

2. A medical gas filter according to claim 1, wherein: The filtration mechanism includes a base plate, a cover plate, and a filter screen. The base plate is horizontally fixed inside the housing and has several through holes. The cover plate is fixed above each of the through holes by a column. The filter screen is disposed between the cover plate, the column, and the base plate. The inner wall of the column is provided with a guide strip.

3. A medical gas filter according to claim 2, wherein: The cleaning mechanism includes a motor, a transmission assembly, a drive shaft, a driven shaft, and a cleaning block. The motor is connected to the bottom of the bottom cover via a support tube. The output shaft of the motor is connected to the drive shaft. The top end of the drive shaft is rotatably connected to the cover plate located at the center. The bottom and top ends of the driven shaft are rotatably connected to the bottom cover and the cover plates around the perimeter, respectively. The drive shaft is connected to the driven shaft via the transmission assembly. The cleaning block is connected to the drive shaft and the driven shaft and moves up and down along the guide strip and the filter screen.

4. A medical gas filter according to claim 3, wherein: The cleaning block includes a disc body with a threaded hole. Both the driving shaft and the driven shaft have external threads that match the threaded hole.

5. The medical gas filter of claim 3, wherein: The outer circumferential side of the cleaning block is provided with a guide groove and a cleaning brush. The guide groove and the cleaning brush are spaced apart from each other, and the guide groove matches the guide strip.

6. The medical gas filter of claim 3, wherein: The transmission assembly includes a support plate, a transmission rod, and a bevel gear set. The transmission rod is connected to the bottom cover through the support plate, and the transmission rod is connected to both the driving shaft and the driven shaft through the bevel gear set.

7. A medical gas filter according to claim 1, characterized in that: An air inlet and a drain outlet are provided on the outer side of the housing. The drain outlet is located below the air inlet. An inclined plate is provided inside the housing, which is inclined downward from the air inlet to the drain outlet.

8. A medical gas filter according to claim 7, wherein: The air inlet connector is equipped with a first pressure sensor, and the top cover is equipped with an air outlet connector with a second pressure sensor. Both the first pressure sensor and the second pressure sensor are electrically connected to an external controller.

9. The medical gas filter of claim 7, wherein: The drain connector is equipped with a drain valve.

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