A filtration device for a blood analyzer

Abstract

The utility model relates to a kind of filtering device for blood analyser applied to the technical field of medical detection equipment, realize blood through infusion tube and send into outer filter cartridge preliminary filtration, again into inner filter cartridge secondary filtration, finally flow into collection tank, fill filling head for blood analyser use, when filtering, servo motor drives electric push rod rotation, pass through sealing cap drive outer filter cartridge and inner filter cartridge rotation promote filtration effect, controller time start electric guide rail, so that third strong magnetic block drives second strong magnetic block in outer filter cartridge and first strong magnetic block in inner filter cartridge move, drive first, second scraper brush clean filter cartridge inner wall, scrape particle to both sides, when outer filter cartridge rotates, third scraper brush is inclined to contact its surface, clean outer surface and make mesh, can be observed by transparent sealing door, timely pull out U-shaped bolt and remove side plate, take filter cartridge from mounting port and clean particle, after filling end, reset filter cartridge, open suction pump and sterilize water in water storage pipe and spray cleaning sterilization filter cartridge and collection tank.

Description

Technical Field

[0001] This utility model relates to a filtration device, and more particularly to a filtration device for a blood analyzer applied in the field of medical testing equipment technology. Background Technology

[0002] Blood analyzers are commonly used equipment in clinical testing, and the accuracy of their test results directly affects doctors' diagnostic judgments. After the blood analyzer finishes analyzing the blood, it needs to be filled into containers. Before filling, a filtration device is used to remove impurities such as cell debris and fibrin fibers.

[0003] Chinese patent CN211927943U discloses a blood analyzer, which includes a sample placement mechanism with several sample tubes containing blood samples, an auxiliary reagent placement mechanism with several reagent placement tubes, a waste liquid storage mechanism with several test tubes, and a cleaning mechanism with several cleaning tanks containing several cleaning solutions.

[0004] Chinese patent CN222433019U discloses a blood analyzer. This utility model has side curtains on the left and right sides between the box body and the box cover, and a rear curtain on the rear side. After the box cover is lifted up, only the front opening is left to facilitate the detection operation, which can play a better protective role and can greatly reduce the contamination of the external environment on the detection process and the analyzer body.

[0005] Currently, most filtration devices on the market use a single-layer filter membrane structure, which can only filter larger particles of impurities and has a poor filtration effect on fine cell debris, fibrous filaments and other impurities. Utility Model Content

[0006] The technical problem that this utility model aims to solve in view of the above-mentioned prior art is that most filtration devices on the market adopt a single-layer filter membrane structure, which can only filter larger particles of impurities and has a poor filtration effect on fine cell debris, fibrous filaments and other impurities.

[0007] To address the aforementioned problems, this utility model provides a filtration device for a blood analyzer, comprising a filtration device with an inner cavity at its rear end, a collection tank at the bottom of the inner cavity, a filling head installed at the bottom of the collection tank, an outer filter cartridge rotatably connected to the inner wall of the inner cavity and located directly above the collection tank, an inner filter cartridge inside the outer filter cartridge, and side plates and sealing caps detachably connected to the ends of the outer and inner filter cartridges respectively, a mounting port communicating with the inner cavity at the side end of the filtration device, and the side plate engaging with the side ends of the outer and inner filter cartridges within the mounting port, a support plate fitted onto the surface of the outer filter cartridge away from the mounting port, and the top of the support plate being fixedly connected to the top wall of the inner cavity, an electric actuator rotatably connected to the inner wall of the inner cavity, and the movable end of the electric actuator being fixedly connected to the side end of the sealing cap via a connecting rod. The inner filter cartridge is connected to a fixed connection, with an infusion tube extending into the inner filter cartridge via an internal thread. A first ring is located inside the inner filter cartridge. A second scraper is fixedly connected to the surface of the first ring near the inner wall of the inner filter cartridge, and the second scraper contacts the inner filter cartridge. A second ring is fitted onto the surface of the inner filter cartridge, located inside the outer filter cartridge. A first scraper is fixedly connected to the surface of the second ring near the inner wall of the outer filter cartridge, and the first scraper contacts the outer filter cartridge. A second strong magnetic block and a first strong magnetic block are symmetrically fixedly connected to the side sections of the outer and inner filter cartridges, respectively, and the second and first strong magnetic blocks attract each other. Electric guide rails located at both ends of the outer filter cartridge are symmetrically fixedly connected to the inner wall of the inner cavity. A third strong magnetic block is slidably connected to the electric guide rails, and the third strong magnetic block attracts the corresponding second strong magnetic block.

[0008] In the above-mentioned filtration device, the blood is filtered through multiple layers of outer and inner filter cartridges to ensure the filtration effect. During filtration, the first, second and third scrapers are driven at timed intervals to scrape off the filtered particles, keeping the mesh in the middle section of the filter cartridge unobstructed and not affecting filtration. After each filtration cycle, the outer and inner filter cartridges can be automatically cleaned and disinfected.

[0009] As a further supplement to this application, the inner cavity sidewall is rotatably connected to a sealing door via a hinge, and the sealing door is fixed to the filter device by a pin. Two sets of limiting grooves are symmetrically opened at the outer end of the side plate and the side end of the filter device, and U-shaped bolts are engaged in the limiting grooves.

[0010] As a further supplement to this application, a support plate is fixedly connected to the side of the filter device, and a servo motor is fixedly connected to the support plate, with the output end of the servo motor connected to the fixed end of the electric actuator.

[0011] As a further supplement to this application, a recycling trough is provided inside the cavity on the side of the collection trough, and a trash can is placed in the recycling trough, with the trash can located directly below the installation port.

[0012] As a further supplement to this application, the pore diameter of the outer filter cartridge is larger than that of the inner filter cartridge, forming a gradient filtration system.

[0013] As a further supplement to this application, a strip plate is fixedly connected to the upper section of one of the electric guide rails, and a third scraper that contacts the outer filter cartridge is fixedly connected to the side of the strip plate near the outer filter cartridge, and the third scraper is designed in an inclined shape.

[0014] As a further supplement to this application, a water storage pipe located directly above the outer filter cartridge is fixedly connected to the top wall of the inner filter cartridge. Multiple nozzles are installed at equal intervals on the bottom wall of the water storage pipe. A connecting pipe extending to the outside of the filter device is fixedly connected to the top wall of the water storage pipe. A water tank is connected to the end of the connecting pipe away from the water storage pipe via a suction pump.

[0015] As a further supplement to this application, a controller for controlling the servo motor, suction pump, and electric guide rail is fixedly connected to the filtration device. In summary, blood is transported via infusion tubing to the middle section of the outer filter cartridge for initial filtration, then to the inner filter cartridge for secondary filtration, and finally flows into the collection tank. From there, it is filled into the blood analyzer via the filling head. During filtration, a servo motor drives an electric push rod to rotate, which in turn drives the outer and inner filter cartridges to rotate via a snap-fit ​​sealing cap, improving filtration efficiency. The controller periodically activates the electric guide rail, causing the third strong magnetic block to move. This third magnetic block magnetically attracts the second strong magnetic block inside the outer filter cartridge and the first strong magnetic block inside the inner filter cartridge, causing all three to move synchronously. This drives the first and second scrapers to horizontally clean the inner wall of the filter cartridge, scraping particles to the sides without affecting the middle section filtration. As the outer filter cartridge rotates, it scrapes against the inclined third scraper, cleaning the outer surface and unclogging the mesh. The operator can observe the filtration process inside the cavity through the transparent sealing door, and remove the U-shaped bolt as needed to remove the side plate and filter cartridge from the installation port to clean out internal particles. After the blood collection tank is filled, the filter cartridge is reset and continues to rotate. The controller starts the suction pump, which sprays disinfectant water through the water storage pipe and nozzle to clean and disinfect the filter cartridge and collection tank. Attached Figure Description

[0016] Figure 1 These are isometric views of the analyzer according to the first and second embodiments of this application; Figure 2 These are partial views of the first and second embodiments of this application; Figure 3 This is a schematic diagram of the filter cartridge structure according to the first embodiment of this application; Figure 4 For this application Figure 3 Enlarged view of point A in the middle; Figure 5 This is a schematic diagram of the filter cartridge drive structure according to the second embodiment of this application; Figure 6 This is a schematic diagram of the scraper structure according to the first embodiment of this application; Figure 7 This is a schematic diagram of the sealing cover installation structure according to the second embodiment of this application.

[0017] Explanation of the labels in the diagram: 1. Filter device; 2. Inner cavity; 3. Sealing door; 4. Collection tank; 5. Recycling tank; 6. Trash can; 7. Servo motor; 8. Pin; 9. Infusion tube; 10. Side plate; 11. Outer filter cartridge; 12. Electric guide rail; 13. Support plate; 14. Inner filter cartridge; 15. First scraper; 16. Second scraper; 17. First strong magnet; 18. Second strong magnet; 19. Third strong magnet; 20. Mounting port; 21. Sealing cover; 22. Connecting rod; 23. Electric push rod; 24. U-bolt; 25. Water storage pipe; 26. Nozzle; 27. Filling head; 28. Third scraper; 29. ​​Limiting groove; 30. Connecting pipe. Detailed Implementation

[0018] The two embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0019] First implementation method: Figures 1-7 The diagram illustrates a filtration device for a blood analyzer, comprising a filtration device 1, an inner cavity 2 at its rear end, a collection tank 4 at the bottom of the inner cavity 2, a drain pipe for discharging disinfectant water installed at the bottom of the collection tank 4 (installed by a person skilled in the art at a suitable position), a filling head 27 installed at the bottom of the collection tank 4, an outer filter cartridge 11 rotatably connected to the inner wall of the inner cavity 2 and located directly above the collection tank 4, an inner filter cartridge 14 located inside the outer filter cartridge 11, and side plates 10 and sealing caps 21 detachably connected to the ends of the outer filter cartridge 11 and the inner filter cartridge 14, respectively. An installation port 20 communicating with the inner cavity 2 is opened at the side end of the filtration device 1, and the side plate 10 is engaged with the side ends of the outer filter cartridge 11 and the inner filter cartridge 14 within the installation port 20. A support plate 13 is fitted onto the surface of the outer filter cartridge 11 away from the installation port 20, and the top of the support plate 13 is fixedly connected to the top wall of the inner cavity 2. An electric actuator 23 is rotatably connected to the inner wall of the inner cavity 2, and the electric actuator 23 is movable. The end is fixedly connected to the side end of the sealing cover 21 via a connecting rod 22. The side plate 10 is internally threaded with an infusion tube 9 extending into the inner filter cylinder 14. The inner filter cylinder 14 is provided with a first ring. A second scraper 16 is fixedly connected to the surface of the first ring near the inner wall of the inner filter cylinder 14, and the second scraper 16 contacts the inner filter cylinder 14. A second ring located inside the outer filter cylinder 11 is sleeved on the surface of the inner filter cylinder 14. A first scraper 16 is fixedly connected to the surface of the second ring near the inner wall of the outer filter cylinder 11. Brush 15, and the first scraper brush 15 is in contact with the outer filter cartridge 11. The outer filter cartridge 11 and the inner filter cartridge 14 are respectively symmetrically fixedly connected with the second strong magnetic block 18 and the first strong magnetic block 17, and the second strong magnetic block 18 and the first strong magnetic block 17 attract each other. The inner wall of the inner cavity 2 is symmetrically fixedly connected with the electric guide rails 12 located at both ends of the outer filter cartridge 11. The electric guide rails 12 are slidably connected with the third strong magnetic block 19, and the third strong magnetic block 19 and the corresponding second strong magnetic block 18 attract each other. Figures 2-4 and Figure 6As shown, two sets of limiting grooves 29 are symmetrically opened at the outer end of the side plate 10 and the side end of the filter device 1. U-shaped bolts 24 are locked in the limiting grooves 29. A support plate is fixedly connected to the side end of the filter device 1. A servo motor 7 is fixedly connected to the support plate, and the output end of the servo motor 7 is connected to the fixed end of the electric push rod 23. The filter hole diameter of the outer filter cartridge 11 is larger than that of the inner filter cartridge 14, forming a gradient filtration system. A strip plate is fixedly connected to the upper section of one of the electric guide rails 12. The strip plate is fixed on the side near the outer filter cartridge 11. A third scraper 28 is connected to the outer filter cartridge 11 and is designed to be inclined. A water storage pipe 25 located directly above the outer filter cartridge 11 is fixedly connected to the inner top wall. Multiple nozzles 26 are installed at equal intervals on the bottom wall of the water storage pipe 25. A connecting pipe 30 extending to the outside of the filter device 1 is fixedly connected to the top wall of the water storage pipe 25. The end of the connecting pipe 30 away from the water storage pipe 25 is connected to a water tank through a suction pump. A controller for controlling the servo motor 7, the suction pump and the electric guide rail 12 is fixedly connected to the filter device 1.

[0020] Working principle: Blood is delivered through the infusion tube 9 to the middle section of the outer filter cartridge 11 for initial filtration. After filtration, the liquid enters the inner filter cartridge 14 for secondary filtration. Finally, the filtered liquid flows into the collection tank 4 for collection, and then can be filled through the filling head 27 for subsequent blood analysis by the blood analyzer. During the filtration process, the servo motor 7 is activated to drive the electric push rod 23 to rotate. At this time, the sealing cover 21 engages with the outer filter cartridge 11 and the inner filter cartridge 14, indirectly driving the rotation of the outer filter cartridge 11 and the inner filter cartridge 14, improving the blood filtration effect. Simultaneously, the controller times the process. The electric guide rail 12 is activated to drive the third strong magnetic block 19 to move. At this time, the third strong magnetic block 19 is magnetically connected to the second strong magnetic block 18 inside the outer filter cartridge 11, and the second strong magnetic block 18 is magnetically connected to the first strong magnetic block 17 inside the inner filter cartridge 14. This allows the third strong magnetic block 19 to drive the second strong magnetic block 18 and the first strong magnetic block 17 to move synchronously, which can drive the first scraper 15 and the second scraper 16 to move horizontally inside the outer filter cartridge 11 and the inner filter cartridge 14 to clean their inner walls. The cleaned particles are scraped off to the sides of the outer filter cartridge 11 and the inner filter cartridge 14 without affecting the continued filtration in the middle section. However, when the outer filter cartridge 11 rotates, the third scraper 28 contacts its surface at an angle, causing the outer surface of the outer filter cartridge 11 to scrape against the third scraper 28, thus cleaning the outer surface of the outer filter cartridge 11 and increasing the mesh unblocking rate. After the filter device 1 has been used for a period of time, the operator can observe the filtration efficiency in the inner cavity 2 through the transparent sealing door 3. According to the actual situation, the operator can select a time period to pull out the U-shaped bolt 24 from each set of limiting grooves 29, thereby removing the side plate 10 from the installation port 20. At this time, the outer filter cartridge 11 and the inner filter cartridge 11 can be removed from the installation port 20. The outer filter cartridge 11 and inner filter cartridge 14 are removed from the inner cavity 2 to clean the particles filtered inside. At the same time, the blood filtered into the collection tank 4 is filled. After cleaning, the outer filter cartridge 11 and inner filter cartridge 14 are reinstalled in the inner cavity 2 and driven to rotate. At this time, the suction pump can be turned on by the controller to inject disinfectant into the water storage pipe 25. The outer filter cartridge 11 and inner filter cartridge 14 are sprayed and cleaned and disinfected through the nozzle 26. The disinfectant after spraying flows into the collection tank 4 and is discharged through the drain pipe to achieve the purpose of rinsing the collection tank 4. This invention uses an outer filter cartridge 11 and an inner filter cartridge 14 to perform multi-layer filtration of blood, ensuring filtration effectiveness. During filtration, the first scraper 15, the second scraper 16, and the third scraper 28 are driven at regular intervals to scrape off the filtered particles, keeping the mesh in the middle section of the filter cartridge clear and not affecting filtration. After each filtration cycle, the outer filter cartridge 11 and the inner filter cartridge 14 can be automatically cleaned and disinfected.

[0021] Second implementation method: Figures 1-2As shown, a sealing door 3 is rotatably connected to the side wall of the inner cavity 2 via a hinge, and the sealing door 3 is fixed to the filter device 1 via a pin 8. A recycling tank 5 is provided inside the inner cavity 2 at the side of the collection tank 4, and a trash can 6 is placed in the recycling tank 5, and the trash can 6 is located directly below the installation port 20; this device is selectively provided by the technical field.

[0022] Working principle: During the blood filtration process, the blood delivery can be stopped at regular intervals to start the cleaning system. The controller activates the electric push rod 23, which drives the sealing cover 21 connected to the connecting rod 22 to retract and pull it out of the installation port 20. At this time, the first scraper 15 and the second scraper 16 can be driven to scrape the particles filtered from the outer filter cartridge 11 and the inner filter cartridge 14 to the installation port 20, where they fall into the trash can 6 directly below the installation port 20 for collection. After the blood test is completed, the sealing door 3 can be opened to remove the trash can 6 from the recycling tank 5 for replacement. This invention automatically opens the sealing cover 21 to periodically clean the particles filtered out of the filter cartridge, thereby saving time and improving filtration efficiency.

[0023] In light of current practical needs, the above-described embodiments adopted in this application are not limited to these. Any changes made within the scope of knowledge possessed by those skilled in the art without departing from the concept of this application still fall within the protection scope of this utility model.

Claims

1. A filtration device for a blood analyzer, comprising a filtration device (1), characterized in that: The filter device (1) has an inner cavity (2) at its rear end. A collection trough (4) is located at the bottom of the inner cavity (2). A filling head (27) is installed at the bottom of the collection trough (4). An outer filter cartridge (11) is rotatably connected to the inner wall of the inner cavity (2) and is located directly above the collection trough (4). An inner filter cartridge (14) is located inside the outer filter cartridge (11). Side plates (10) and sealing caps (21) are detachably connected to both ends of the outer filter cartridge (11) and the inner filter cartridge (14). The filter device (1) has a side opening connected to the inner cavity (2). 2) An internally connected installation port (20) is provided, and the side plate (10) is engaged with the side ends of the outer filter cartridge (11) and the inner filter cartridge (14) within the installation port (20). A support plate (13) is fitted on the surface of the outer filter cartridge (11) away from the installation port (20), and the top of the support plate (13) is fixedly connected to the top wall of the inner cavity (2). An electric push rod (23) is rotatably connected to the inner wall of the inner cavity (2), and the movable end of the electric push rod (23) is fixedly connected to the side end of the sealing cover (21) through a connecting rod (22). The side plate (10) An infusion tube (9) is internally threaded and extends into the inner filter cylinder (14). A first ring is provided inside the inner filter cylinder (14). A second scraper (16) is fixedly connected to the surface of the first ring near the inner wall of the inner filter cylinder (14), and the second scraper (16) contacts the inner filter cylinder (14). A second ring located inside the outer filter cylinder (11) is fitted onto the surface of the inner filter cylinder (14). A first scraper (15) is fixedly connected to the surface of the second ring near the inner wall of the outer filter cylinder (11), and the first scraper (15) contacts the outer filter cylinder. (11) Contact, the outer filter cylinder (11) and the inner filter cylinder (14) are respectively symmetrically fixedly connected with a second strong magnetic block (18) and a first strong magnetic block (17), and the second strong magnetic block (18) and the first strong magnetic block (17) attract each other. The inner wall of the inner cavity (2) is symmetrically fixedly connected with electric guide rails (12) located at both ends of the outer filter cylinder (11). A third strong magnetic block (19) is slidably connected on the electric guide rail (12), and the third strong magnetic block (19) attracts the corresponding second strong magnetic block (18).

2. A filtration device for a blood analyzer according to claim 1, characterized in that: The inner cavity (2) side wall is connected to a sealing door (3) by a hinge, and the sealing door (3) is fixed to the filter device (1) by a pin (8). The outer end of the side plate (10) and the side end of the filter device (1) are symmetrically provided with two sets of limiting grooves (29), and a U-shaped bolt (24) is engaged in the limiting groove (29).

3. A filtration device for a blood analyzer according to claim 1, characterized in that: The filter device (1) has a tray fixedly connected to its side end, and a servo motor (7) is fixedly connected to the tray. The output end of the servo motor (7) is connected to the fixed end of the electric push rod (23).

4. A filtration device for a blood analyzer according to claim 1, characterized in that: The inner cavity (2) is provided with a recycling tank (5) located on the side of the collection tank (4), and a trash can (6) is placed in the recycling tank (5), and the trash can (6) is located directly below the installation port (20).

5. A filtration device for a blood analyzer according to claim 1, characterized in that: The pore diameter of the outer filter cartridge (11) is larger than that of the inner filter cartridge (14), forming a gradient filtration system.

6. A filtration device for a blood analyzer according to claim 1, characterized in that: One of the electric guide rails (12) has a strip plate fixedly connected to its upper section. A third scraper (28) that contacts the outer filter cartridge (11) is fixedly connected to the side of the strip plate near the outer filter cartridge (11), and the third scraper (28) is designed to be inclined.

7. A filtration device for a blood analyzer according to claim 1, characterized in that: The inner top wall is fixedly connected to a water storage pipe (25) located directly above the outer filter cartridge (11). Multiple nozzles (26) are installed at equal intervals on the bottom wall of the water storage pipe (25). A connecting pipe (30) extending to the outside of the filter device (1) is fixedly connected to the top wall of the water storage pipe (25). The end of the connecting pipe (30) away from the water storage pipe (25) is connected to a water tank via a suction pump.

8. A filtration device for a blood analyzer according to claim 7, characterized in that: The filter device (1) is fixedly connected to a controller that controls the servo motor (7), the suction pump and the electric guide rail (12).

Images