Efficient sample centrifugal filtration equipment

Abstract

The invention relates to efficient sample centrifugal filtration equipment which comprises a shell, the top of the shell is covered with a sealing cover, the bottom of the shell is provided with a discharging pipe, and a filtering mechanism is arranged in the shell; the filtering mechanism comprises a rotating disc, a first filter screen, a power assembly and a filtering assembly, the first filter screen is in the shape of a cylindrical tube, the first filter screen is vertically arranged, the rotating disc and the first filter screen are coaxially arranged, the rotating disc is arranged at the bottom end of the first filter screen in a sealed mode, and the power assembly is in transmission connection with the bottom of the rotating disc; according to the efficient sample centrifugal filtering equipment, the function of removing particulate matter intercepted on the first filter screen is achieved, the first filter screen is prevented from being blocked, the sample centrifugal filtering efficiency is improved, and through cooperation between the first filter screen and the collecting ring, radial run-out generated during rotation of the first filter screen can be reduced, and the stability of the first filter screen is improved.

Description

Technical Field

[0001] The invention relates to a high-efficiency sample centrifugal filtering device, belonging to the technical field of disease control. Background Art

[0002] In the important process of disease prevention and control, quality control products play a vital role and are widely used to monitor the quality of detection. Among them, urine matrix quality control products, as one of the most commonly used quality control products in human biological monitoring, have attracted much attention. To produce this quality control product, the source of urine is usually a mixture of multiple batches of human urine. Such mixed urine must undergo strict centrifugation and filtration treatments before it can become a uniform matrix. However, at present, when laboratories perform centrifugation and filtration operations, they are generally divided into two steps and carried out in sequence, and the amount of samples that can be processed at one time is relatively small. This situation greatly reduces work efficiency and makes the entire operation process cumbersome and time-consuming. In view of this, there is an urgent need for a high-efficiency sample centrifugal filtration device to significantly improve the efficiency of sample centrifugal filtration, so as to better meet the detection needs in the process of disease prevention and control. Summary of the invention

[0003] The technical problem to be solved by the present invention is: to provide a high-efficiency sample centrifugal filtering device in order to overcome the deficiencies of the prior art.

[0004] The technical solution adopted by the present invention to solve the above problems is: a high-efficiency sample centrifugal filtering device, comprising a shell, the top cover of the shell is provided with a sealing cover, the bottom of the shell is provided with a discharge pipe, and a filtering mechanism is provided in the shell; The filtering mechanism comprises a rotating disk, a first filter screen, a power assembly and a filtering assembly, wherein the first filter screen is cylindrical and tubular, the first filter screen is vertically arranged, the rotating disk is coaxially arranged with the first filter screen, the rotating disk is sealed at the bottom end of the first filter screen, and the power assembly is drivingly connected with the bottom of the rotating disk; The filter assembly includes a lifting ring and a collecting unit. The lifting ring is located in the first filter screen. The diameter of the lifting ring is equal to the inner diameter of the first filter screen. The lifting ring and the first filter screen are coaxially arranged. The bottom of the lifting ring is provided with a lifting unit. The lifting unit drives the lifting ring to lift and lower reciprocate. The collecting unit comprises a collecting ring, which is coaxially arranged with the first filter screen, fixed to the inner wall of the shell and sealed, the first filter screen passes through the collecting ring, and the first filter screen is slidably and sealedly connected to the collecting ring.

[0005] Preferably, the power assembly includes a transmission shaft, which is coaxially arranged with the rotation, the transmission shaft movably and sealably passes through the bottom of the shell, the top end of the transmission shaft is fixedly arranged on the rotating disk, and the bottom end of the transmission shaft is driven by a motor.

[0006] Preferably, the lifting unit includes a magnetic ring, which is coaxially arranged with the rotating disk, and the magnetic ring is located below the rotating disk. A plurality of electromagnets are fixedly arranged at the bottom of the shell, and the plurality of electromagnets are evenly distributed circumferentially around the axis of the rotating disk, and the electromagnet is located below the magnetic ring. A plurality of push rods and a plurality of first springs are arranged on the top of the magnet ring, and the push rods and the first springs correspond to the electromagnets one by one. The push rods are arranged vertically, and the push rods are movable and sealed to pass through the rotating disk. The top end of the push rod is fixedly arranged at the bottom of the lifting ring, and the bottom end of the push rod is fixedly arranged on the magnetic ring. The first spring is located between the rotating disk and the magnetic ring, and the magnet is connected to the rotating disk through the first spring.

[0007] Preferably, the collecting ring is provided with a plurality of auxiliary components, which are evenly distributed circumferentially around the axis of the rotating disk, and the auxiliary components include vertically arranged filter holes, in which a second filter screen is installed.

[0008] Preferably, the top of the first filter screen is located above the collecting ring.

[0009] Preferably, a plurality of cleaning components are provided on the shell, and the plurality of cleaning components are evenly distributed circumferentially around the axis of the rotating disk. The cleaning components include a horizontally arranged air pipe, the air pipe is fixedly penetrated through the shell, the air pipe is communicated with the shell, one end of the air pipe located outside the shell is sealed and fixedly provided with a sealing block, a conduit is vertically fixedly provided on the top of the air pipe, the conduit is located outside the shell, the conduit is communicated with the air pipe, a magnetic disk is provided in the conduit, the magnetic disk is slidably and sealingly connected to the inner wall of the conduit, a second spring is provided at the bottom of the magnetic disk, the magnetic disk is connected to the inner wall of the air pipe through the second spring, the conduit is located below the sealing cover, the sealing cover is made of iron, and the second spring is in a stretched state.

[0010] Preferably, the number of the trachea is three.

[0011] Preferably, the air pipe is located below the collecting ring, an auxiliary pipe is fixedly and sealedly provided at the bottom of the collecting ring, the auxiliary pipe is coaxially arranged with the collecting ring, and the air pipe is located outside the auxiliary pipe.

[0012] Preferably, the collecting ring and the auxiliary pipe are an integrally formed structure.

[0013] Preferably, the ring hole of the lifting ring is in the shape of a truncated cone, and the end of the ring hole of the lifting ring with the smallest aperture is arranged toward the sealing cover.

[0014] Compared with the prior art, the advantages of the present invention are: The present invention discloses a high-efficiency sample centrifugal filtration device, which realizes the function of removing particles trapped on a first filter screen, prevents the first filter screen from being blocked, and improves the sample centrifugal filtration efficiency. Moreover, through the cooperation between the first filter screen and the collecting ring, the radial runout generated during the rotation of the first filter screen can also be reduced, thereby improving the stability of the first filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A three-dimensional diagram of a high-efficiency sample centrifugal filtration device of the present invention; Figure 2 is a schematic diagram of the structure of the shell; Figure 3 It is a structural schematic diagram of the filtering mechanism; Figure 4 is a first structural schematic diagram of a collecting unit; Figure 5 is a second structural schematic diagram of a collecting unit; Figure 6 is a schematic diagram of the structure of the cleaning component; Figure 7 It is a structural schematic diagram of the lifting ring.

[0016] Wherein: 1. Shell, 2. Sealing cover, 3. Discharge pipe, 4. Rotating disk, 5. First filter screen, 6. Lifting ring, 7. Collecting ring, 8. Transmission shaft, 9. Motor, 10. Magnetic ring, 11. Electromagnet, 12. Push rod, 13. First spring, 14. Filter hole, 15. Second filter screen, 16. Air pipe, 17. Sealing block, 18. Conduit, 19. Magnetic disk, 20. Second spring, 21. Auxiliary pipe. DETAILED DESCRIPTION

[0017] like Figure 1-7 As shown, a high-efficiency sample centrifugal filtration device in this embodiment includes a housing 1, a top cover of the housing 1 is provided with a sealing cover 2, a bottom of the housing 1 is provided with a discharge pipe 3, and a filtration mechanism is provided in the housing 1; The filtering mechanism comprises a rotating disk 4, a first filter screen 5, a power assembly and a filtering assembly, wherein the first filter screen 5 is cylindrical and tubular, and the first filter screen 5 is arranged vertically, the rotating disk 4 is arranged coaxially with the first filter screen 5, the rotating disk 4 is sealed at the bottom end of the first filter screen 5, and the power assembly is drivingly connected to the bottom of the rotating disk 4; The filter assembly includes a lifting ring 6 and a collecting unit. The lifting ring 6 is located in the first filter screen 5. The diameter of the lifting ring 6 is equal to the inner diameter of the first filter screen 5. The lifting ring 6 is coaxially arranged with the first filter screen 5. A lifting unit is arranged at the bottom of the lifting ring 6. The lifting unit drives the lifting ring 6 to lift and lower reciprocate. The collecting unit comprises a collecting ring 7, which is coaxially arranged with the first filter screen 5, fixed to the inner wall of the housing 1 and sealed, and the first filter screen 5 passes through the collecting ring 7, and the first filter screen 5 is slidably and sealedly connected to the collecting ring 7.

[0018] During the use of the device, the sealing cover 2 is opened, the sample is placed in the first filter screen 5 and then the sealing cover 2 is closed. Thereafter, the rotating disk 4 is rotated by the power assembly, and the rotation of the rotating disk 4 drives the first filter screen 5 to rotate, so that the liquid in the sample passes through the first filter screen 5 under the action of centrifugal force and is discharged from the discharge pipe 3, while the particulate matter in the sample is retained by the first filter screen 5, thereby achieving solid-liquid separation of the sample, and during the filtration, the lifting ring 6 is driven to reciprocate and rise and fall by the lifting unit, and in fact, the rotation of the rotating disk 4 also drives the lifting ring 6 to rotate synchronously through the lifting unit, and when the lifting ring 6 rises, the lifting ring 6 scrapes off the first filter screen 5. The particles retained on the inner wall of a filter 5 are moved to the top of the lifting ring 6, and through calculation, the lifting ring 6 is raised to the top of the first filter 5. At this time, the particles on the top of the lifting ring 6 are moved away from the axis of the rotating disk 4 under the action of centrifugal force and fall on the top of the collecting ring 7. After that, the lifting ring 6 descends, and the cycle is repeated. The particles retained on the first filter 5 can be removed to prevent the first filter 5 from being blocked, thereby improving the filtration efficiency. In addition, through the cooperation between the first filter 5 and the collecting ring 7, the radial runout generated during the rotation of the first filter 5 can be reduced, thereby improving the stability of the first filter 5.

[0019] Preferably, the power assembly includes a transmission shaft 8, which is coaxially arranged with the rotation, and the transmission shaft 8 is movable and sealed through the bottom of the shell 1. The top end of the transmission shaft 8 is fixedly arranged on the rotating disk 4, and the bottom end of the transmission shaft 8 is driven by a motor 9.

[0020] When the motor 9 is started, the transmission shaft 8 is rotated, and the rotation of the transmission shaft 8 drives the rotating disk 4 to rotate.

[0021] Preferably, the lifting unit includes a magnetic ring 10, which is coaxially arranged with the rotating disk 4 and is located below the rotating disk 4. A plurality of electromagnets 11 are fixedly arranged at the bottom of the shell 1, and the plurality of electromagnets 11 are evenly distributed circumferentially around the axis of the rotating disk 4. The electromagnet 11 is located below the magnetic ring 10. A plurality of push rods 12 and a plurality of first springs 13 are arranged on the top of the magnet ring, and the push rods 12 and the first springs 13 correspond to the electromagnets 11 one by one. The push rods 12 are arranged vertically, and the push rods 12 are movable and sealed to pass through the rotating disk 4. The top end of the push rod 12 is fixedly arranged at the bottom of the lifting ring 6, and the bottom end of the push rod 12 is fixedly arranged on the magnetic ring 10. The first spring 13 is located between the rotating disk 4 and the magnetic ring 10, and the magnet is connected to the rotating disk 4 through the first spring 13.

[0022] During the filtering period, the electromagnet 11 is intermittently energized. When the electromagnet 11 is energized, a mutually repulsive force is generated between the electromagnet 11 and the magnetic ring 10, so that the magnetic ring 10 rises. The rise of the magnetic ring 10 drives the lifting ring 6 to rise synchronously through the push rod 12, and causes the first spring 13 to deform. When the electromagnet 11 is de-energized, the elastic action of the first spring 13 causes the magnetic ring 10 to descend and reset. The resetting of the magnetic ring 10 drives the lifting ring 6 to descend through the push rod 12. Such a cycle realizes the reciprocating lifting of the lifting ring 6, and the rotation of the rotating disk 4 drives the lifting ring 6 to reciprocate through the push rod 12.

[0023] Preferably, the collecting ring 7 is provided with a plurality of auxiliary components, which are evenly distributed circumferentially around the axis of the rotating disk 4 , and the auxiliary components include vertically arranged filter holes 14 , in which a second filter screen 15 is installed.

[0024] The liquid remaining in the particles on the top of the collecting ring 7 passes through the second filter screen 15 and falls to the bottom of the housing 1, while the particles are retained by the second filter screen 15, thereby improving the filtering effect.

[0025] Preferably, the top of the first filter screen 5 is located above the collecting ring 7 .

[0026] Preferably, the shell 1 is provided with a plurality of cleaning components, which are evenly distributed circumferentially around the axis of the rotating disk 4, and the cleaning components include a horizontally arranged air pipe 16, which is fixedly penetrated through the shell 1 and communicated with the shell 1, and one end of the air pipe 16 located outside the shell 1 is sealed and fixedly provided with a sealing block 17, and a conduit 18 is vertically fixedly provided on the top of the air pipe 16, and the conduit 18 is located outside the shell 1 and communicated with the air pipe 16, and a magnetic disk 19 is arranged in the conduit 18, and the magnetic disk 19 is slidably and sealingly connected to the inner wall of the conduit 18, and a second spring 20 is arranged at the bottom of the magnetic disk 19, and the magnetic disk 19 is connected to the inner wall of the air pipe 16 through the second spring 20, and the conduit 18 is located below the sealing cover 2, and the sealing cover 2 is made of iron, and the second spring 20 is in a stretched state.

[0027] After the filtration is completed, the sealing cover 2 is opened, and the distance between the iron sealing cover 2 and the magnetic disk 19 increases, then the attraction between the magnetic disk 19 and the sealing disk decreases and is less than the elastic force of the second spring 20. At this time, the magnetic disk 19 is lowered by the elastic action of the second spring 20, so that the air in the conduit 18 is transported from the air pipe 16 to the shell 1, and the air in the shell 1 is discharged from the discharge pipe 3. Under the action of the airflow, the residual liquid in the shell 1 can be blown away, thereby improving the automatic cleaning function. When the sealing cover 2 is closed, the distance between the sealing cover 2 and the magnetic disk 19 is reduced, then the attraction between the magnetic disk 19 and the sealing disk is greater than the elastic force of the second spring 20. At this time, the magnetic disk 19 rises and stretches the second spring 20. Because the sealing cover 2 is subjected to a force in the direction close to the magnetic disk 19, the stability of the sealing cover 2 can be improved.

[0028] Preferably, the number of the air pipes 16 is three.

[0029] Preferably, the air pipe 16 is located below the collecting ring 7 , an auxiliary pipe 21 is fixedly and sealedly provided at the bottom of the collecting ring 7 , the auxiliary pipe 21 is coaxially arranged with the collecting ring 7 , and the air pipe 16 is located outside the auxiliary pipe 21 .

[0030] The auxiliary pipe 21 is used to increase the air flow rate in the housing 1, thereby improving the effect of air blowing to move the liquid.

[0031] Preferably, the collecting ring 7 and the auxiliary pipe 21 are an integrally formed structure.

[0032] Preferably, the ring hole of the lifting ring 6 is in the shape of a truncated cone, and the end of the ring hole of the lifting ring 6 with the smallest aperture is arranged toward the sealing cover 2 .

[0033] When the lifting ring 6 descends, the particles in the first filter screen 5 can be easily moved to the top of the lifting ring 6 through the truncated cone-shaped ring hole.

[0034] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A high-efficiency sample centrifugal filtration device, characterized in that: It comprises a shell (1), the top cover of the shell (1) is provided with a sealing cover (2), the bottom of the shell (1) is provided with a discharge pipe (3), and a filtering mechanism is provided inside the shell (1); The filtering mechanism comprises a rotating disk (4), a first filter screen (5), a power assembly and a filtering assembly, the first filter screen (5) being in the shape of a cylindrical tube, the first filter screen (5) being arranged vertically, the rotating disk (4) and the first filter screen (5) being arranged coaxially, the rotating disk (4) being sealingly arranged at the bottom end of the first filter screen (5), and the power assembly being drivingly connected to the bottom of the rotating disk (4); The filter assembly comprises a lifting ring (6) and a collecting unit, the lifting ring (6) being located inside the first filter screen (5), the diameter of the lifting ring (6) being equal to the inner diameter of the first filter screen (5), the lifting ring (6) being coaxially arranged with the first filter screen (5), and a lifting unit being arranged at the bottom of the lifting ring (6), the lifting unit driving the lifting ring (6) to reciprocate and lift; The collecting unit comprises a collecting ring (7), the collecting ring (7) being coaxially arranged with the first filter screen (5), the collecting ring (7) being fixedly and sealingly connected to the inner wall of the housing (1), the first filter screen (5) passing through the collecting ring (7), and the first filter screen (5) and the collecting ring (7) being slidably and sealingly connected.

2. A high-efficiency sample centrifugal filtration device according to claim 1, characterized in that: The power assembly comprises a transmission shaft (8), the transmission shaft (8) being coaxially arranged with the rotating disk, the transmission shaft (8) being movable and sealed to pass through the bottom of the housing (1), the top end of the transmission shaft (8) being fixedly arranged on the rotating disk (4), and the bottom end of the transmission shaft (8) being driven by a motor (9).

3. A high-efficiency sample centrifugal filtration device according to claim 1, characterized in that: The lifting unit comprises a magnetic ring (10), the magnetic ring (10) being coaxially arranged with the rotating disk (4), the magnetic ring (10) being located below the rotating disk (4), a plurality of electromagnets (11) being fixedly arranged at the bottom of the housing (1), the plurality of electromagnets (11) being evenly distributed circumferentially with the axis of the rotating disk (4) as the center, the electromagnets (11) being located below the magnetic ring (10), a plurality of push rods (12) and a plurality of first springs (13) being arranged at the top of the magnetic ring, The push rod (12) and the first spring (13) are respectively corresponding to the electromagnet (11). The push rod (12) is arranged vertically. The push rod (12) is movable and sealed to pass through the rotating disk (4). The top end of the push rod (12) is fixedly arranged at the bottom of the lifting ring (6). The bottom end of the push rod (12) is fixedly arranged on the magnetic ring (10). The first spring (13) is located between the rotating disk (4) and the magnetic ring (10). The magnet is connected to the rotating disk (4) through the first spring (13).

4. A high-efficiency sample centrifugal filtration device according to claim 1, characterized in that: The collecting ring (7) is provided with a plurality of auxiliary components, which are evenly distributed circumferentially around the axis of the rotating disk (4), and the auxiliary components include filter holes (14) arranged vertically, and a second filter screen (15) is installed in the filter holes (14).

5. The high-efficiency sample centrifugal filtration device according to claim 1, characterized in that: The top of the first filter screen (5) is located above the collecting ring (7).

6. The high-efficiency sample centrifugal filtration device according to claim 1, characterized in that: The shell (1) is provided with a plurality of cleaning components, which are evenly distributed in the circumferential direction with the axis of the rotating disk (4) as the center, and the cleaning components include a horizontally arranged air pipe (16), the air pipe (16) is fixedly arranged on the shell (1), the air pipe (16) is communicated with the shell (1), one end of the air pipe (16) located outside the shell (1) is sealed and fixedly provided with a sealing block (17), and a conduit (18) is vertically fixedly provided on the top of the air pipe (16), and the conduit (18) is located at the shell (1). The conduit (18) is connected to the trachea (16) outside the conduit (18), a magnetic disk (19) is arranged inside the conduit (18), the magnetic disk (19) is slidably and sealedly connected to the inner wall of the conduit (18), a second spring (20) is arranged at the bottom of the magnetic disk (19), the magnetic disk (19) is connected to the inner wall of the trachea (16) via the second spring (20), the conduit (18) is located below the sealing cover (2), the sealing cover (2) is made of iron, and the second spring (20) is in a stretched state.

7. A high-efficiency sample centrifugal filtration device according to claim 6, characterized in that: The number of the air pipes (16) is three.

8. The high-efficiency sample centrifugal filtration device according to claim 6, characterized in that: The air pipe (16) is located below the collecting ring (7); an auxiliary pipe (21) is fixedly and sealedly arranged at the bottom of the collecting ring (7); the auxiliary pipe (21) is coaxially arranged with the collecting ring (7); and the air pipe (16) is located outside the auxiliary pipe (21).

9. A high-efficiency sample centrifugal filtration device according to claim 8, characterized in that: The collecting ring (7) and the auxiliary pipe (21) are an integrally formed structure.

10. The high-efficiency sample centrifugal filtration device according to claim 1, characterized in that: The ring hole of the lifting ring (6) is in the shape of a truncated cone, and the end of the ring hole of the lifting ring (6) with the smallest aperture is arranged in a direction close to the sealing cover (2).

Images