Plasma test tube centrifuge

Abstract

The plasma test tube centrifugal machine comprises a centrifugal box, a containing frame, a motor, a pressing plate and a top plate, a centrifugal cavity is formed in the centrifugal box, the top of the centrifugal cavity is open, the top plate is detachably arranged on the top of the centrifugal box, the containing frame is located in the centrifugal cavity, and a vertical driving shaft is fixedly arranged at the bottom of the containing frame. The driving shaft is rotationally connected with the bottom of the centrifugal cavity, the motor is fixed to the bottom of the centrifugal box, one end of the driving shaft is connected with the output end of the motor, a transverse plate is horizontally arranged in the containing frame, a plurality of through holes allowing test tubes to penetrate through are formed in the transverse plate, the pressing plate is located over the containing frame, and L-shaped connecting rods are arranged at the two ends of the pressing plate correspondingly; the other ends of the two connecting rods extend vertically downwards, locking assemblies are arranged on the two side walls of the containing frame and used for locking the two connecting rods, and the problem that in the prior art, in the process that a test tube is placed in a centrifugal bin for centrifugation, the test tube is inconvenient to fix is solved.

Description

Technical Field

[0001] This utility model relates to the field of plasma centrifugation technology, and in particular to a plasma test tube centrifuge. Background Technology

[0002] A plasma centrifuge is a specialized device used to separate plasma from other components in blood. Its core principle is to use the difference in centrifugal force to separate substances of different densities. For example, high-speed rotation generates centrifugal force, causing the higher density red blood cells and white blood cells in the blood to sink to the bottom of the container, while the lower density plasma gathers in the upper layer, thus achieving stratified extraction.

[0003] For example, Chinese utility model patent with publication number CN215390024U discloses a centrifugal separation device for extracting plasma proteins. It mainly involves placing test tubes in a centrifuge chamber and driving them to rotate and centrifuge by a centrifugal motor. However, the test tubes are held by two fixed clamps, relying solely on the spring of a pressure spring to hold them. When the test tubes are rotating at high speed, one end of the test tube will swing relative to the others, which can easily cause damage to the test tubes. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a plasma test tube centrifuge, which solves the problem of inconvenience in fixing test tubes during centrifugation when they are placed in the centrifuge chamber.

[0005] According to an embodiment of this utility model, a plasma test tube centrifuge includes: a centrifuge chamber, a placement frame, a motor, a pressure plate, and a top plate. The centrifuge chamber has a centrifugation cavity with an opening at the top. The top plate is detachably mounted on the top of the centrifuge chamber. The placement frame is located inside the centrifugation cavity, and a vertical drive shaft is fixedly mounted at its bottom. The drive shaft is rotatably connected to the bottom of the centrifugation cavity. The motor is fixed at the bottom of the centrifuge chamber, and one end of the drive shaft is connected to the output end of the motor. A horizontal plate is horizontally mounted inside the placement frame, and several through holes for test tubes to pass through are provided on the horizontal plate. The pressure plate is located directly above the placement frame, and L-shaped connecting rods are provided at both ends of the pressure plate. The other ends of the two connecting rods extend vertically downwards. Locking components are provided on both side walls of the placement frame, and the locking components are used to lock the two connecting rods.

[0006] Compared with the prior art, this utility model has the following advantages: By setting a horizontal plate inside the placement frame, the test tube containing plasma is passed through the through hole on the horizontal plate and supported at the bottom of the placement frame. Then, the pressure plate is pushed vertically downward to press the pressure plate against the top of the test tube. Then, the two locking components on the side wall of the placement frame lock the two connecting rods respectively, thereby keeping the pressure plate pressed against the top of the test tube and preventing the test tube from shaking during the rotation of the placement frame, thus ensuring safety when centrifuging plasma. In addition, this centrifuge is simple and convenient to operate when placing and clamping test tubes, which helps to improve the centrifugation efficiency of plasma.

[0007] Furthermore, each of the locking components includes: a guide block and a clamping screw. The guide block is fixed to the side wall of the placement frame. A vertical channel is provided on the guide block and extends through it. One end of the connecting rod passes vertically through the channel. The connecting rod is in close contact with the side wall of the placement frame near the channel. The clamping screw is horizontally disposed on the side wall of the guide block. The clamping screw is threadedly connected to the guide block. One end of the clamping screw is inserted into the channel and is in close contact with the side wall of the connecting rod.

[0008] Furthermore, each of the clamping screws is provided with a clamping pad at the end that is in close contact with the side wall of the connecting rod. The clamping pad is made of rubber material.

[0009] Furthermore, a number of ball bearings are rolled around at the bottom of the centrifuge chamber, and each ball bearing is rolled around and connected to the bottom of the placement frame.

[0010] Furthermore, the inner wall of the placement frame is provided with a support pad located directly below the horizontal plate, which is used to support the bottom of the test tube.

[0011] Furthermore, one end of the top plate is hinged to the top of the centrifuge, and the other end is provided with a resilient locking element. The top of the centrifuge is provided with a slot for inserting one end of the resilient locking element.

[0012] Furthermore, the elastic locking component includes: a mounting block, a spring, and a pin. The mounting block is fixed to the top of the top plate, and a mounting groove is provided at the bottom of the mounting block. The spring is disposed in the mounting groove, and one end of the pin is slidably connected to the mounting groove. A socket is provided on the top plate, and the pin passes through the socket and is inserted into the slot under the elastic force of the spring. A pull rod is provided at the top of the pin, and one end of the pull rod extends vertically out of the mounting block. The pull rod is slidably connected to the mounting block. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0015] In the above attached diagram: 1. Centrifuge box; 2. Centrifuge chamber; 3. Top plate; 4. Placement frame; 5. Horizontal plate; 6. Test tube; 7. Pressure plate; 8. Connecting rod; 9. Drive shaft; 10. Motor; 11. Guide block; 12. Channel; 13. Clamping screw; 14. Clamping pad; 15. Ball bearing; 16. Mounting block; 17. Pin; 18. Spring; 19. Pull rod; 20. Refrigeration indoor unit; 21. Refrigeration outdoor unit. Detailed Implementation

[0016] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 As shown in the figure, this utility model embodiment proposes a plasma test tube centrifuge, including: a centrifuge box 1, a placement frame 4, a motor 10, a pressure plate 7, and a top plate 3. The centrifuge box 1 has a centrifugation chamber 2 inside, with an opening at the top. The top plate 3 is detachably mounted on the top of the centrifuge box 1. The placement frame 4 is located inside the centrifugation chamber 2, and a vertical drive shaft 9 is fixedly mounted at its bottom. The drive shaft 9 is rotatably connected to the bottom of the centrifugation chamber 2. The motor 10 is fixed at the bottom of the centrifuge box 1, and one end of the drive shaft 9 is connected to the output end of the motor 10. A horizontal plate 5 is horizontally mounted inside the placement frame 4, and several through holes for test tubes 6 to pass through are provided on the horizontal plate 5. The pressure plate 7 is located directly above the placement frame 4, and L-shaped connecting rods 8 are provided at both ends of the pressure plate 7. The other ends of the two connecting rods 8 extend vertically downward. Locking components are provided on both side walls of the placement frame 4, and the locking components are used to lock the two connecting rods 8.

[0018] By setting a horizontal plate 5 inside the placement frame 4, the test tube 6 containing plasma is passed through the through hole on the horizontal plate 5. The test tube 6 is supported at the bottom of the placement frame 4. Then, the pressure plate 7 is pushed vertically downward to press the pressure plate 7 against the top of the test tube 6. Then, the two locking components on the side wall of the placement frame 4 lock the two connecting rods 8 respectively, thereby keeping the pressure plate 7 pressed against the top of the test tube 6 and preventing the test tube 6 from shaking during the rotation of the placement frame 4. This ensures safety when centrifuging plasma. In addition, this centrifuge is simple and convenient to operate when placing and clamping the test tube 6, which helps to improve the centrifugation efficiency of plasma.

[0019] Specifically, such as Figure 2 As shown, each of the locking components includes: a guide block 11 and a clamping screw 13. The guide block 11 is fixed to the side wall of the placement frame 4. A vertical channel 12 is provided on the guide block 11 and passes through it. One end of the connecting rod 8 passes vertically through the channel 12. The connecting rod 8 and the channel 12 are close to the side wall of the placement frame 4. The clamping screw 13 is horizontally arranged on the side wall of the guide block 11. The clamping screw 13 is threadedly connected to the guide block 11. One end of the clamping screw 13 is inserted into the channel 12 and is close to the side wall of the connecting rod 8.

[0020] After all the test tubes 6 are placed in the placement frame 4, push the pressure plate 7 to move vertically downwards. The connecting rods 8 at both ends of the pressure plate 7 also move vertically downwards. After the pressure plate 7 is firmly pressed against the top of the test tubes 6, rotate the clamping screw 13 to move it towards the side wall of the connecting rod 8, so that the end of the clamping screw 13 is in close contact with the side wall of the connecting rod 8, thereby preventing the connecting rod 8 from moving in the vertical direction. Furthermore, a clamping pad 14 made of rubber material can be set at the end of the screw that is in close contact with the side wall of the connecting rod 8 to increase the friction between the clamping screw 13 and the connecting rod 8. At the same time, a support pad made of rubber material can also be set on the inner wall of the placement frame 4 to support the test tubes 6.

[0021] Preferably, a plurality of ball bearings 15 are rolled at the bottom of the centrifuge chamber 2, and each ball bearing 15 is rolledly connected to the bottom of the placement frame 4. A cooling indoor unit 20 is installed inside the centrifuge chamber 2, and a cooling outdoor unit 21 is installed on the outer wall of the centrifuge box 1, thereby achieving a cooling effect inside the centrifuge chamber 2. The working principle of the cooling indoor unit 20 and the cooling outdoor unit 21 is similar to that of an air conditioner.

[0022] Furthermore, one end of the top plate 3 is hinged to the top of the centrifuge box 1, and the other end is provided with an elastic locking element. The top of the centrifuge box 1 is provided with a slot for inserting one end of the elastic locking element. The elastic locking element includes: a mounting block 16, a spring 18, and a pin 17. The mounting block 16 is fixed to the top of the top plate 3, and the bottom of the mounting block 16 is provided with a mounting groove. The spring 18 is disposed in the mounting groove, and one end of the pin 17 is slidably connected to the mounting groove. The top plate 3 is provided with a insertion hole. Under the elastic force of the spring 18, the pin 17 passes through the insertion hole and is inserted into the slot. The top of the pin 17 is provided with a pull rod 19, one end of which extends vertically out of the mounting block 16, and the pull rod 19 is slidably connected to the mounting block 16.

[0023] When it is necessary to open the opening at the top of the centrifuge chamber 2, pull the lever 19 to disengage the pin 17 from the slot at the top of the centrifuge chamber 1. Then, push the free end of the top plate 3 to rotate around the hinged end at the top of the centrifuge chamber 1, thereby opening the opening and facilitating the placement and removal of the test tube 6.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A plasma tube centrifuge, characterized by, include: The centrifuge box (1), placement frame (4), motor (10), pressure plate (7), and top plate (3) are arranged in a centrifuge chamber (2) with an opening at the top. The top plate (3) is detachably mounted on the top of the centrifuge box (1). The placement frame (4) is located inside the centrifuge chamber (2), and a vertical drive shaft (9) is fixedly mounted on its bottom. The drive shaft (9) is rotatably connected to the bottom of the centrifuge chamber (2). The motor (10) is fixed to the bottom of the centrifuge box (1). One end of the moving shaft (9) is connected to the output end of the motor (10). A horizontal plate (5) is horizontally arranged inside the placement frame (4). Several through holes for the test tubes (6) to pass through are provided on the horizontal plate (5). The pressure plate (7) is located directly above the placement frame (4). Both ends of the pressure plate (7) are provided with L-shaped connecting rods (8). The other ends of the two connecting rods (8) extend vertically downward. Locking components are provided on both sides of the placement frame (4). The locking components are used to lock the two connecting rods (8).

2. A blood plasma test tube centrifuge as claimed in claim 1, wherein, Each of the locking components includes: a guide block (11) and a clamping screw (13). The guide block (11) is fixed to the side wall of the placement frame (4). A vertical channel (12) is provided on the guide block (11) and passes through it. One end of the connecting rod (8) passes vertically through the channel (12). The connecting rod (8) and the channel (12) are close to the side wall of the placement frame (4). The clamping screw (13) is horizontally set on the side wall of the guide block (11). The clamping screw (13) is threadedly connected to the guide block (11). One end of the clamping screw (13) is inserted into the channel (12) and is close to the side wall of the connecting rod (8).

3. A plasma tube centrifuge as claimed in claim 2, wherein, Each of the clamping screws (13) is provided with a clamping pad (14) at the end that is in close contact with the side wall of the connecting rod (8). The clamping pad (14) is made of rubber material.

4. A blood plasma test tube centrifuge as claimed in claim 1, wherein, The bottom of the centrifuge chamber (2) is provided with a number of rolling balls (15), and each rolling ball (15) is rollingly connected to the bottom of the placement frame (4).

5. A blood plasma test tube centrifuge as claimed in claim 1, wherein, The inner wall of the placement frame (4) is provided with a support pad located directly below the horizontal plate (5), which is used to support the bottom of the test tube (6).

6. A blood plasma test tube centrifuge as claimed in claim 1, wherein, One end of the top plate (3) is hinged to the top of the centrifuge box (1), and the other end is provided with an elastic locking member. The top of the centrifuge box (1) is provided with a slot for inserting one end of the elastic locking member.

7. A blood plasma test tube centrifuge as claimed in claim 6, wherein, The elastic locking component includes: a mounting block (16), a spring (18), and a pin (17). The mounting block (16) is fixed to the top of the top plate (3). The bottom of the mounting block (16) is provided with a mounting groove. The spring (18) is located in the mounting groove. One end of the pin (17) is slidably connected to the mounting groove. The top plate (3) is provided with a socket. Under the elastic force of the spring (18), the pin (17) passes through the socket and is inserted into the slot. The top of the pin (17) is provided with a pull rod (19). One end of the pull rod (19) extends vertically out of the mounting block (16). The pull rod (19) is slidably connected to the mounting block (16).

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