A blood cell separating machine

Abstract

The utility model provides a blood cell is with separating machine, belongs to blood processing equipment technical field, including bottom plate, is equipped with servo motor and bottom fixed base on the bottom plate, the output of servo motor is connected with synchronous pulley no.

Description

Technical Field

[0001] This utility model relates to the field of blood processing equipment technology, specifically to a blood cell separator. Background Technology

[0002] A blood separator is a medical device that separates whole blood into components such as platelets, white blood cells, and peripheral blood stem cells using a centrifugal device. Existing blood separators mostly employ a single-layer rotating structure, with the loading chamber directly driven by a motor. When two blood bags are placed in the loading chamber and rotate simultaneously, tubing entanglement can easily occur. Furthermore, blood separators use a synchronous belt drive structure, but traditional synchronous belt drives have fixed tension, which is prone to slippage or overstretching during high-speed centrifugation, resulting in poor speed stability and affecting the separation effect. Therefore, we propose a blood cell separator. Utility Model Content

[0003] The purpose of this invention is to provide a blood cell separator to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: This utility model provides a blood cell separator, including a base plate. A servo motor and a bottom fixing seat are fixedly mounted on the base plate. The servo motor is located at one end of the base plate, and the bottom fixing seat is located at the other end of the base plate. The output end of the servo motor is connected to a first synchronous pulley. A first synchronous belt is fitted on the first synchronous pulley. A second synchronous pulley is connected to the end of the first synchronous belt away from the first synchronous pulley. An outer rotating shaft is fixedly connected to the second synchronous pulley. The outer rotating shaft is rotatably connected to the bottom fixing seat. An elastic tensioning mechanism is provided on one side of the first synchronous belt. The elastic tensioning mechanism is mounted on the base plate. A double-layer rotating mechanism is provided at the end of the outer rotating shaft away from the base plate. A centrifuge rack for placing blood bags is provided on the double-layer rotating mechanism. A receiving cavity is opened at the end of the outer rotating shaft away from the base plate. An opening of the outer rotating shaft is opened on one side of the receiving cavity.

[0005] Furthermore, the elastic tensioning mechanism includes a rotating seat, which is fixedly connected to the base plate. A rotating arm is rotatably mounted on the rotating seat. A bearing shaft is provided at the end of the rotating arm away from the rotating seat, and a bearing is provided on the bearing shaft. An elastic seat is provided on the side of the rotating arm away from the timing belt. An installation hole is provided on the elastic seat. A clamping pin is slidably mounted in the installation hole. A first flange is provided in the installation hole. One end of the clamping pin contacts the rotating arm. A second flange is provided at the end of the clamping pin that contacts the rotating arm. A spring is provided between the first flange and the second flange, and the spring is sleeved on the clamping pin.

[0006] Furthermore, the double-layer rotating mechanism includes a fixed helical gear, a first turntable, and a second turntable. Both the first and second turntables are fixedly connected to an outer rotating shaft. A rotating cover is fixedly mounted on the second turntable. The fixed helical gear is fixedly installed at the end of the bottom fixed seat away from the bottom plate. The fixed helical gear meshes with a rotating helical gear. The tooth ratio between the rotating helical gear and the fixed helical gear is 1:2. A rotating shaft is fixedly connected to the rotating helical gear. The end of the rotating shaft away from the rotating helical gear passes through the first and second turntables. A synchronous pulley three is fixedly connected to the end of the rotating shaft away from the rotating helical gear. A synchronous belt two is fitted on the synchronous pulley three. A synchronous pulley four is provided at the end of the synchronous belt two away from the synchronous pulley three. The tooth ratio between the synchronous pulley three and the synchronous pulley four is 1:2. An inner rotating seat is fixedly connected to the fourth rotating seat. The inner rotating seat is rotatably connected to the outer rotating shaft and slidably connected to the rotating cover. An inner rotating shaft is fixedly connected to the inner rotating seat and is fixedly connected to the centrifuge frame.

[0007] Furthermore, a protective bucket is fixedly installed on the rotating cover.

[0008] Furthermore, a tensioning pulley is rotatably mounted on the turntable 2, and the synchronous belt 2 is sleeved on the tensioning pulley.

[0009] Furthermore, a proximity switch is provided on the bottom mounting base, and a proximity sensor is provided at one end of the rotating shaft with a rotating helical gear, and the proximity switch cooperates with the proximity sensor.

[0010] Compared with the prior art, the present invention has the following technical effects: In this invention, the elastic tension of synchronous belt one is achieved by setting an elastic tensioning mechanism, and the elastic tension of synchronous belt two is achieved by setting a tensioning pulley. When the centrifuge is centrifuged at high speed, synchronous belt one and synchronous belt two are less likely to slip or be overstretched, resulting in high speed stability, low vibration, and ensuring separation effect. By setting a double-layer rotating mechanism, the tooth ratio of the rotating helical gear to the fixed helical gear is 1:2, the tooth ratio of synchronous pulley three to synchronous pulley four is 1:2, the rotation speed of the protective barrel is the same as that of the outer rotating shaft, and the rotation speed of the centrifuge rack is twice that of the outer rotating shaft and also twice that of the protective barrel. Because the centrifuge rack and the protective barrel have a double rotation speed relationship, the connecting pipes will not self-entangle when the two blood bags are placed on the centrifuge rack and rotate simultaneously. Attached Figure Description

[0011] Figure 1 This is a cross-sectional schematic diagram of a blood cell separator according to an embodiment of the present invention; Figure 2 This is a bottom view schematic diagram of a blood cell separator according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a blood cell separator according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the elastic tensioning mechanism according to an embodiment of the present invention. Figure 1 ; Figure 5 This is a schematic diagram of the structure of the elastic tensioning mechanism according to an embodiment of the present invention. Figure 2 ; Figure 6 This is a schematic diagram of the structure of the elastic seat according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of a blood cell separator for placing blood bags according to an embodiment of the present invention.

[0012] In the diagram: 1. Base plate, 2. Servo motor, 3. Bottom mounting base, 4. Synchronous pulley one, 5. Synchronous belt one, 6. Synchronous pulley two, 7. Outer rotating shaft, 8. Fixed helical gear, 9. Turntable one, 10. Turntable two, 11. Turning cover, 12. Rotating helical gear, 13. Rotating shaft, 14. Synchronous pulley three, 15. Synchronous belt two, 16. Synchronous pulley four, 17. Inner rotating base, 18. Inner rotating shaft, 19. Centrifuge frame, 20. Receiving cavity, 21. 1. Outer rotating shaft opening; 22. Protective barrel; 23. Tensioning pulley; 24. Rotating seat; 25. Rotating arm; 26. Bearing shaft; 27. Bearing; 28. Elastic seat; 29. ​​Mounting hole; 30. Pressing pin; 31. First flange; 32. Second flange; 33. Spring; 34. Proximity switch; 35. Proximity sensor; 36. Blood bag; 37. Connecting pipeline; 38. Bearing assembly one; 39. Bearing assembly two; 40. Bearing assembly three; 41. Sleeve. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figures 1 to 7 This embodiment provides a blood cell separator, including a base plate 1. A servo motor 2 and a bottom fixing seat 3 are fixedly mounted on the base plate 1. The servo motor 2 is located at one end of the base plate 1, and the bottom fixing seat 3 is located at the other end of the base plate 1. The output end of the servo motor 2 passes through the base plate 1 and is connected to a synchronous pulley 4. A synchronous belt 5 is fitted on the synchronous pulley 4. A synchronous pulley 6 is connected to the end of the synchronous belt 5 away from the synchronous pulley 4. An outer rotating shaft 7 is fixedly connected to the synchronous pulley 6. The outer rotating shaft 7 and the bottom fixing seat 3 are rotatably connected through a bearing assembly 38.

[0015] Specifically, an elastic tensioning mechanism is provided on one side of the synchronous belt 5, and the elastic tensioning mechanism is set on the base plate 1. When the synchronous belt 5 is running, the elastic tensioning mechanism can achieve elastic tension of the synchronous belt 5. A double-layer rotating mechanism is provided at the end of the outer rotating shaft 7 away from the base plate 1. A centrifuge rack 19 is provided on the double-layer rotating mechanism. The centrifuge rack 19 is used to place blood bags 36 containing blood. A receiving cavity 20 is opened at the end of the outer rotating shaft 7 away from the base plate 1. An outer rotating shaft opening 21 is opened on one side of the receiving cavity 20. The connecting pipe 37 of the blood bag 36 extends into the receiving cavity 20 and then extends outward through the outer rotating shaft opening 21.

[0016] Specifically, the elastic tensioning mechanism includes a rotating seat 24, which is fixedly connected to the base plate 1. A rotating arm 25 is rotatably mounted on the rotating seat 24, and the rotating arm 25 can rotate around the rotating seat 24. A bearing shaft 26 is provided at the end of the rotating arm 25 away from the rotating seat 24, and a bearing 27 is provided on the bearing shaft 26. An elastic seat 28 is provided on the side of the rotating arm 25 away from the timing belt 5. An installation hole 29 is provided on the elastic seat 28, and a clamping pin 30 is slidably mounted in the installation hole 29. A first flange 31 is provided in the installation hole 29. One end of the clamping pin 30 is in contact with the rotating arm 25, and a second flange 32 is provided at the end of the clamping pin 30 in contact with the rotating arm 25. A spring 33 is provided between the first flange 31 and the second flange 32, and the spring 33 is sleeved on the clamping pin 30. During operation, spring 33 is in a compressed state. Due to the elastic force of spring 33, one end of spring 33 presses against the clamping pin 30. The clamping pin 30 presses against the end of rotating arm 25 away from rotating seat 24. Rotating arm 25 rotates towards the side closer to synchronous belt 5. Bearing 27 presses against synchronous belt 5. Synchronous belt 5 is tightened due to the pressure of bearing 27.

[0017] Specifically, the double-layer rotating mechanism includes a fixed helical gear 8, a first turntable 9, and a second turntable 10. Both the first turntable 9 and the second turntable 10 are fixedly connected to the outer rotating shaft 7. A rotating cover 11 is fixedly mounted on the second turntable 10. The fixed helical gear 8 is bolted to the end of the bottom fixed base 3 away from the base plate 1. The fixed helical gear 8 meshes with a rotating helical gear 12, and the gear ratio between the rotating helical gear 12 and the fixed helical gear 8 is 1:2. The rotating helical gear 12 is fixedly connected to a rotating shaft 13. The rotating shaft 13 is rotatably mounted in a sleeve 41 through a bearing assembly 39. One end of the sleeve 41 is fixedly connected to the first turntable 9, and the other end of the sleeve 41 is fixedly connected to the second turntable 10.

[0018] Specifically, the end of the rotating shaft 13 away from the rotating helical gear 12 passes through turntable 9 and turntable 10. A synchronous pulley 3 14 is fixedly connected to the end of the rotating shaft 13 away from the rotating helical gear 12. A synchronous belt 2 15 is fitted onto synchronous pulley 3 14. A synchronous pulley 4 16 is located at the end of synchronous belt 2 15 away from synchronous pulley 3 14. The gear ratio between synchronous pulley 3 14 and synchronous pulley 4 16 is 1:2. An inner rotating seat 17 is fixedly connected to synchronous pulley 4 16 by bolts. The inner rotating seat 17 is rotatably connected to the outer rotating shaft 7 via bearing assembly 3 40. The inner rotating seat 17 is slidably connected to the rotating cover 11. An inner rotating shaft 18 is fixedly connected to the inner rotating seat 17 by bolts. The inner rotating shaft 18 is fixedly connected to the centrifuge frame 19. A tensioning pulley 23 is mounted on turntable 210, and synchronous belt 215 is mounted on tensioning pulley 23. When synchronous belt 215 is running, tensioning pulley 23 can achieve elastic tensioning of synchronous belt 215.

[0019] Specifically, during operation, synchronous pulley 2 6 drives the outer rotating shaft 7 to rotate, which in turn drives turntable 1 9 and turntable 2 10 to rotate. Sleeve 41 rotates together, and rotating helical gear 12 rotates around fixed helical gear 8. Since the tooth ratio of rotating helical gear 12 to fixed helical gear 8 is 1:2, for every one rotation of the outer rotating shaft 7, rotating helical gear 12 rotates one revolution around fixed helical gear 8. During the rotation, rotating helical gear 12 rotates three revolutions. Rotating helical gear 12 drives synchronous pulley 3 14 to rotate via rotating shaft 13. Synchronous pulley 3 14 rotates three revolutions with rotating helical gear 12. Synchronous pulley 3 14 drives synchronous pulley 4 16 to rotate via synchronous belt 2 15. Since the tooth ratio of synchronous pulley 3 14 to synchronous pulley 4 16 is 1:2, synchronous pulley 3 14 rotates four revolutions relative to synchronous pulley 4 16, and synchronous pulley 4 16 rotates two revolutions. Synchronous pulley 16 drives the inner rotating seat 17, the inner rotating shaft 18 and the centrifuge frame 19 to rotate together. At this time, the rotation speed of the centrifuge frame 19 is twice that of the outer rotating shaft 7, and the rotation direction is the same.

[0020] Specifically, a protective bucket 22 is fixedly provided on the rotating cover 11, and the centrifuge rack 19 is located inside the protective bucket 22. When the blood bag 36 placed on the centrifuge rack 19 is centrifuged, the protective bucket 22 is used to prevent the blood bag 36 from being thrown out of the centrifuge rack 19.

[0021] Specifically, a proximity switch 34 is provided on the bottom mounting base 3, and a proximity sensor 35 is provided at one end of the rotating shaft 13 where the rotating helical gear 12 is located. The proximity switch 34 and the proximity sensor 35 cooperate with each other. The actual rotational speed of the outer rotating shaft 7 is measured through the cooperation between the proximity switch 34 and the proximity sensor 35.

[0022] Specifically, the working principle of this utility model is as follows: the servo motor 2 drives the synchronous pulley 4 to rotate, the synchronous pulley 4 drives the synchronous pulley 6 to rotate through the synchronous belt 5, the synchronous pulley 6 drives the outer rotating shaft 7 to rotate, the outer rotating shaft 7 drives the turntable 9 and the turntable 10 to rotate, the sleeve 41 rotates together, and the rotating helical gear 12 rotates around the fixed helical gear 8. Since the tooth ratio of the rotating helical gear 12 to the fixed helical gear 8 is 1:2, the outer rotating shaft 7 rotates once, and the rotating helical gear 12 rotates once around the fixed helical gear 8. During the rotation process, the rotating helical gear 12 rotates three times. The rotating helical gear 12 drives the synchronous pulley 14 to rotate via the rotating shaft 13. The synchronous pulley 14 rotates three times with the rotating helical gear 12. The synchronous pulley 14 then drives the synchronous pulley 16 to rotate via the synchronous belt 15. Since the gear ratio of the synchronous pulley 14 to the synchronous pulley 16 is 1:2, the synchronous pulley 14 rotates four times relative to the synchronous pulley 16, and the synchronous pulley 16 rotates two times on its own axis. The synchronous pulley 16 drives the inner rotating seat 17, the inner rotating shaft 18, and the centrifuge frame 19 to rotate together. At this time, the rotational speed of the centrifuge frame 19 is twice that of the outer rotating shaft 7, and they rotate in the same direction. Because the protective barrel 22 is fixedly connected to the rotating cover 11, the rotating cover 11 is fixedly connected to the rotating disk 10, and the rotating disk 10 is fixedly connected to the outer rotating shaft 7, the rotational speed of the protective barrel 22 is the same as that of the outer rotating shaft 7. Therefore, there is a two-times rotational speed relationship between the centrifuge frame 19 and the protective barrel 22. Two blood bags 36 are placed on the centrifuge rack 19 and rotated simultaneously. The connecting tube 37 of the blood bag 36 extends into the receiving cavity 20 and then extends outward through the outer rotation shaft opening 21, and is placed along the outside of the protective barrel 22. Because the centrifuge rack 19 and the protective barrel 22 have a rotation speed of twice that of the centrifuge rack 19, the connecting tube 37 of the blood bag 36 will not self-entangle.

[0023] Specifically, the elastic tensioning mechanism achieves elastic tensioning of synchronous belt 5, and the tensioning pulley 23 achieves elastic tensioning of synchronous belt 15. When the centrifuge is centrifuged at high speed, synchronous belts 5 and 15 are less prone to slippage or overstretching, resulting in high speed stability, low vibration, and ensuring separation effect. By setting a double-layer rotating mechanism, the tooth ratio of rotating helical gear 12 to fixed helical gear 8 is 1:2, the tooth ratio of synchronous pulley 14 to synchronous pulley 16 is 1:2, the rotational speed of protective barrel 22 is the same as that of outer rotating shaft 7, and the rotational speed of centrifuge rack 19 is twice that of outer rotating shaft 7 and also twice that of protective barrel 22. Because centrifuge rack 19 and protective barrel 22 have a double rotational speed relationship, the connecting pipe 37 will not self-entangle when the two blood bags 36 are placed on centrifuge rack 19 and rotate simultaneously.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A blood cell separator, characterized in that, Includes a base plate (1), on which a servo motor (2) and a bottom mounting base (3) are fixedly mounted. The servo motor (2) is located at one end of the base plate (1), and the bottom mounting base (3) is located at the other end of the base plate (1). The output end of the servo motor (2) is connected to a first synchronous pulley (4), and a first synchronous belt (5) is fitted on the first synchronous pulley (4). The end of the first synchronous belt (5) away from the first synchronous pulley (4) is connected to a second synchronous pulley (6), and the second synchronous pulley (6) is fixedly connected to an outer rotating shaft. (7) The outer rotating shaft (7) is rotatably connected to the bottom fixed seat (3). One side of the synchronous belt (5) is provided with an elastic tensioning mechanism. The elastic tensioning mechanism is set on the bottom plate (1). The outer rotating shaft (7) is provided with a double-layer rotating mechanism at the end away from the bottom plate (1). The double-layer rotating mechanism is provided with a centrifuge rack (19) for placing blood bags (36). The outer rotating shaft (7) is provided with a receiving cavity (20) at the end away from the bottom plate (1). The receiving cavity (20) is provided with an outer rotating shaft opening (21) on one side.

2. The blood cell separator according to claim 1, characterized in that, The elastic tensioning mechanism includes a rotating seat (24), which is fixedly connected to the base plate (1). A rotating arm (25) is rotatably mounted on the rotating seat (24). A bearing shaft (26) is provided at one end of the rotating arm (25) away from the rotating seat (24). A bearing (27) is provided on the bearing shaft (26). An elastic seat (28) is provided on one side of the rotating arm (25) away from the synchronous belt (5). An installation hole (29) is provided on the elastic seat (28). A pressing pin (30) is slidably provided in the installation hole (29). A first flange (31) is provided in the installation hole (29). One end of the pressing pin (30) is in contact with the rotating arm (25). A second flange (32) is provided at the end of the pressing pin (30) in contact with the rotating arm (25). A spring (33) is provided between the first flange (31) and the second flange (32). The spring (33) is sleeved on the pressing pin (30).

3. The blood cell separator according to claim 1, characterized in that, The double-layer rotating mechanism includes a fixed helical gear (8), a first turntable (9), and a second turntable (10). Both the first turntable (9) and the second turntable (10) are fixedly connected to the outer rotating shaft (7). A rotating cover (11) is fixedly provided on the second turntable (10). The fixed helical gear (8) is fixedly installed on the bottom fixed seat (3) at the end away from the bottom plate (1). The fixed helical gear (8) meshes with a rotating helical gear (12). The gear ratio between the rotating helical gear (12) and the fixed helical gear (8) is 1:

2. The rotating helical gear (12) is fixedly connected to a rotating shaft (13). The end of the rotating shaft (13) away from the rotating helical gear (12) passes through the first turntable (9) and the second turntable (10). 13) A synchronous pulley three (14) is fixedly connected to one end away from the rotating helical gear (12). A synchronous belt two (15) is sleeved on the synchronous pulley three (14). A synchronous pulley four (16) is provided at one end of the synchronous belt two (15) away from the synchronous pulley three (14). The tooth ratio of the synchronous pulley three (14) and the synchronous pulley four (16) is 1:

2. An inner rotating seat (17) is fixedly connected to the synchronous pulley four (16). The inner rotating seat (17) is rotatably connected to the outer rotating shaft (7). The inner rotating seat (17) is slidably connected to the rotating cover (11). An inner rotating shaft (18) is fixedly connected to the inner rotating seat (17). The inner rotating shaft (18) is fixedly connected to the centrifuge frame (19).

4. The blood cell separator according to claim 3, characterized in that, A protective bucket (22) is fixedly installed on the rotating cover (11).

5. The blood cell separator according to claim 4, characterized in that, The turntable 2 (10) is provided with a tensioning pulley (23) for rotation, and the synchronous belt 2 (15) is sleeved on the tensioning pulley (23).

6. The blood cell separator according to claim 5, characterized in that, The bottom mounting base (3) is provided with a proximity switch (34), and the rotating shaft (13) is provided with a proximity sensor (35) at one end of a rotating helical gear (12). The proximity switch (34) and the proximity sensor (35) cooperate with each other.

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