High-speed centrifugal machine

Abstract

The high-speed centrifugal machine comprises a centrifugal box and a centrifugal disc arranged in the centrifugal box and further comprises an abutting mechanism, a connecting mechanism and a driving mechanism, and the abutting mechanism abuts against the centrifugal disc, is movably arranged on the centrifugal box and is used for pressing the centrifugal disc downwards; the connecting mechanism comprises a shaft rod and an inserting block; one end of the shaft rod is fixedly connected with the inserting block; the driving mechanism is arranged in the centrifugal box; the bottom face of the centrifugal disc is provided with inserting grooves matched with the shaft rod and the inserting blocks, and the driving mechanism is connected with the other end of the shaft rod and used for driving the centrifugal disc to rotate at a high speed when the shaft rod and the inserting blocks are inserted into the inserting grooves. Different types of centrifugal plates can be conveniently replaced, the universality is improved, and the probability that the centrifugal plates are separated from a shaft rod due to high-speed rotation can be reduced.

Description

Technical Field

[0001] This application relates to the field of centrifuge equipment technology, and in particular to a high-speed centrifuge. Background Technology

[0002] In medical testing, high-speed centrifuges are commonly used to separate serum, plasma, precipitate proteins, or perform urine sediment analysis. High-speed centrifuges allow suspended particles in a mixture to precipitate rapidly, thereby separating substances with different specific gravities.

[0003] Existing high-speed centrifuges have internal centrifuge trays for holding centrifuge tubes. These trays are typically bolted to the inside of the machine. Different types of centrifuge trays are used to match centrifuge tubes of different diameters, resulting in limited versatility and frequent disassembly and replacement, making them inconvenient to use. Furthermore, the bolting and disassembly require specialized tools, leading to low work efficiency. Utility Model Content

[0004] This application provides a high-speed centrifuge that not only allows for easy replacement of different types of centrifuge discs, improving versatility, but also reduces the probability of the centrifuge discs detaching from the shaft due to high-speed rotation.

[0005] In a first aspect, this application provides a high-speed centrifuge, including a centrifuge chamber and a centrifuge disc disposed within the centrifuge chamber, and further including a pressing mechanism, a connecting mechanism, and a driving mechanism. The pressing mechanism abuts against the centrifuge disc and is movably disposed on the centrifuge chamber to press down the centrifuge disc. The connecting mechanism includes a shaft and a plug, with one end of the shaft fixedly connected to the plug. The driving mechanism is disposed within the centrifuge chamber. The bottom surface of the centrifuge disc is provided with a slot adapted to the shaft and the plug, and the driving mechanism is connected to the other end of the shaft to drive the centrifuge disc to rotate at high speed when the shaft and the plug are inserted into the slot.

[0006] In some embodiments, a receiving groove is provided in the middle of the upper surface of the centrifuge disc, and the pressing mechanism includes a cover plate, a pressure plate, and a mounting rod. The cover plate is hinged to the centrifuge chamber. The upper surface of the pressure plate is connected to the cover plate, and a helical spring is fixedly connected to the lower surface of the pressure plate. One end of the mounting rod is provided with a first mounting groove, and the inner wall of the first mounting groove is fixedly connected to the end of the helical spring away from the pressure plate. The other end of the mounting rod can be inserted into the receiving groove. The inner wall of the receiving groove and the outer surface of the mounting rod are both smooth. The other end of the mounting rod is provided with a second mounting groove, and an inner rod that can be inserted into the second mounting groove is fixedly installed in the middle of the receiving groove. The outer surface of the inner rod is smooth. The upper surface of the pressure plate is provided with a square groove, and a first folding rod is rotatably connected to the inner wall of the square groove. A second folding rod is rotatably connected to the cover plate, and the second folding rod is rotatably connected to the first folding rod.

[0007] In some embodiments, the centrifuge chamber has an installation cavity, and a partition is fixedly connected to the inner wall of the centrifuge chamber to divide the installation cavity into a first inner cavity and a second inner cavity; the drive mechanism includes a drive motor, which is disposed in the second inner cavity, and the other end of the shaft passes through the partition and is fixedly connected to the output shaft end of the drive motor; the lower surface of the centrifuge disc can abut against the outer surface of the partition, and both the lower surface of the centrifuge disc and the outer surface of the partition are smooth; the upper surface of the centrifuge disc is provided with a plurality of sample slots arranged at intervals along its circumference, and the sample slots are used to accommodate centrifuge tubes adapted thereto; an installation cylinder is movably sleeved on the outer wall of the installation rod, and a limiting plate is fixedly connected to one end of the installation cylinder near the pressure plate, and the surface of the limiting plate near the centrifuge disc is provided with a plurality of limiting grooves for centrifuge tubes to be inserted; the upper surface of the centrifuge disc is provided in a downwardly concave frustum shape, and the limiting plate is provided in a frustum shape to fit the upper surface of the centrifuge disc.

[0008] Based on the high-speed centrifuge of this application embodiment, the pressing mechanism can press down on the centrifuge disc while ensuring its rotation, making the shaft and insert block more tightly inserted into the slot of the centrifuge disc, reducing the probability of the centrifuge disc detaching from the shaft due to high-speed rotation. By inserting the shaft and insert block into the slot, different types of centrifuge discs can be easily replaced, improving versatility. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a three-dimensional structural diagram of the high-speed centrifuge of this application;

[0011] Figure 2 This is a three-dimensional structural schematic diagram of the high-speed centrifuge of this application from another perspective;

[0012] Figure 3 This is a schematic diagram of the internal structure of the high-speed centrifuge of this application;

[0013] Figure 4 This is a structural schematic diagram of the pressure plate, limit plate, mounting rod, and centrifugal plate of this application;

[0014] Figure 5 This is a three-dimensional structural diagram of the pressure plate, limiting plate, mounting rod, and centrifugal plate of this application;

[0015] Figure 6 This is a three-dimensional structural diagram of the pressure plate, limiting plate, mounting rod, and centrifugal plate of this application from another perspective;

[0016] Figure 7for Figure 3 A schematic diagram of the internal structure of a medium-to-high-speed centrifuge from another perspective.

[0017] Explanation of reference numerals in the attached figures:

[0018] 1. Pressing mechanism; 11. Cover plate; 12. Pressure plate; 121. Helical spring; 122. Square groove; 123. First folding rod; 124. Second folding rod; 13. Mounting rod; 131. First mounting groove; 132. Second mounting groove; 133. Mounting cylinder; 134. Limiting plate; 1341. Limiting groove; 2. Connecting mechanism; 21. Shaft; 22. Insert block; 3. Drive mechanism; 31. Drive motor; 4. Centrifuge box; 41. Centrifuge disc; 411. Slot; 412. Receiving groove; 4121. Inner rod; 413. Sample groove; 42. Mounting cavity; 421. First mounting cavity; 422. Second mounting cavity; 43. Partition plate; 44. Start button; 45. Stop button.

[0019] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0021] Please see Figures 1 to 7 This application proposes a high-speed centrifuge, including a centrifuge chamber 4 and a centrifuge disc 41 disposed within the centrifuge chamber 4, and further including a pressing mechanism 1, a connecting mechanism 2, and a driving mechanism 3. The pressing mechanism 1 abuts against the centrifuge disc 41 and is movably disposed on the centrifuge chamber 4 to press down the centrifuge disc 41. The connecting mechanism 2 includes a shaft 21 and a plug 22, with one end of the shaft 21 fixedly connected to the plug 22. The driving mechanism 3 is disposed within the centrifuge chamber 4. The bottom surface of the centrifuge disc 41 is provided with a slot 411 adapted to the shaft 21 and the plug 22. The driving mechanism 3 is connected to the other end of the shaft 21 to drive the centrifuge disc 41 to rotate at high speed when the shaft 21 and the plug 22 are inserted into the slot 411.

[0022] In the embodiments provided in this application, the surfaces of the pressing mechanism 1 and the centrifuge disc 41 in contact can be smoothly arranged. The centrifuge disc 41 can rotate relative to the pressing mechanism 1. The pressing mechanism 1 can press down on the centrifuge disc 41 while ensuring its rotation, making the shaft 21 and the insert 22 more tightly inserted into the slot 411 of the centrifuge disc 41, reducing the probability that the centrifuge disc 41 will detach from the shaft 21 due to high-speed rotation. By inserting the shaft 21 and the insert 22 into the slot 411, the centrifuge disc 41 can be easily replaced, allowing for the convenient replacement of different types of centrifuge discs 41 to match centrifuge tubes of different diameters, thus improving versatility.

[0023] The slot 411 may include interconnected columnar slots and block slots. The columnar slots are adapted to the shaft 21, and the block slots are adapted to the insert blocks 22. The insert blocks 22 may be arranged in a cuboid shape or a cube shape. One end of the shaft 21 may be fixedly connected to multiple insert blocks 22. The centrifugal disc 41 may be arranged in a frustum shape, that is, the area of ​​the upper surface of the centrifugal disc 41 is smaller than the area of ​​its lower surface. The frustum-shaped centrifugal disc 41 keeps the centrifugal disc 41 stable during rotation and also reduces the probability that the centrifugal disc 41 will shake and detach from the shaft 21 due to high-speed rotation.

[0024] In some embodiments of this application, a receiving groove 412 is provided in the middle of the upper surface of the centrifuge plate 41. The pressing mechanism 1 includes a cover plate 11, a pressure plate 12 and a mounting rod 13. The cover plate 11 is hinged to the centrifuge box 4. The upper surface of the pressure plate 12 is connected to the cover plate 11, and a helical spring 121 is fixedly connected to the lower surface of the pressure plate 12. One end of the mounting rod 13 is provided with a first mounting groove 131. The inner wall of the first mounting groove 131 is fixedly connected to the end of the helical spring 121 away from the pressure plate 12, and the other end of the mounting rod 13 can be inserted into the receiving groove 412. The inner wall of the receiving groove 412 and the outer surface of the mounting rod 13 are both smooth.

[0025] When pressing down on the centrifuge disc 41, the operator first presses down on the pressure plate 12 by hand, then closes the cover plate 11. This prevents the helical spring 121 from being subjected to lateral force during the direct closing of the cover plate 11, which could cause the helical spring 121 to bend laterally. When the pressure plate 12 is pressed down, it compresses the helical spring 121, causing the helical spring 121 to extend outward. This force acts on the mounting rod 13, causing the mounting rod 13 to press down on the centrifuge disc 41. Then, the cover plate 11 is closed, ensuring that the other end of the mounting rod 13 is tightly fitted against the inner wall of the receiving groove 412, thus pressing down on the centrifuge disc 41. This also ensures that the shaft 21 and the insert 22 are tightly fitted against the inner wall of the slot 411, preventing the centrifuge disc 41 from detaching from the shaft 21 due to high-speed rotation. The cover plate 11 can be made of a high-density material to increase its weight and improve the pressing effect on the centrifuge disc 41.

[0026] Both the centrifuge disc 41 and the mounting rod 13 can be made of stainless steel. Polishing can be applied to the centrifuge disc 41 and the mounting rod 13 to increase the smoothness of the inner wall of the receiving groove 412 and the outer surface of the mounting rod 13. Furthermore, lubricating oil can be applied to the inside of the receiving groove 412 and the outer surface of the mounting rod 13 to further increase smoothness and ensure high-speed rotation of the centrifuge disc 41. The first mounting groove 131 reduces the probability of the helical spring 121 bending circumferentially, allowing the helical spring 121 to contract and extend along the length of the mounting rod 13, thus maximizing the effect of the spring force on the mounting rod 13 and the centrifuge disc 41.

[0027] Furthermore, the other end of the mounting rod 13 is provided with a second mounting groove 132, and an inner rod 4121 that can be inserted into the second mounting groove 132 is fixedly installed in the middle of the receiving groove 412. The outer surface of the inner rod 4121 is smooth. By inserting the inner rod 4121 into the second mounting groove 132, it can be ensured that the centrifugal disc 41 rotates along the central axis when rotating, and the probability of the centrifugal disc 41 detaching from the shaft 21 due to high-speed rotation can be further reduced.

[0028] The upper surface of the pressure plate 12 is provided with a square groove 122. A first folding rod is rotatably connected to the inner wall of the square groove 122. A second folding rod 124 is rotatably connected to the cover plate 11. The second folding rod 124 is rotatably connected to the first folding rod 123. With the setting of the first folding rod 123 and the second folding rod 124, the cover plate 11 can be closed directly without first pressing the pressure plate 12 by hand. During the process of directly closing the cover plate 11, the first folding rod 123 and the second folding rod 124 will rotate and enter the square groove 122. As the first folding rod 123 and the second folding rod 124 are housed in the square groove 122, they will push the pressure plate 12, causing the pressure plate 12 to compress the coil spring 121 downward. When the first folding rod 123 and the second folding rod 124 are fully inserted into the square groove 122, the cover plate 11 will also be successfully closed. This can prevent the coil spring 121 from bending laterally due to the lateral force of the cover plate 11.

[0029] In some embodiments of this application, the centrifuge 4 has an installation cavity 42, and a partition 43 is fixedly connected to the inner wall of the centrifuge 4 to divide the installation cavity 42 into a first inner cavity and a second inner cavity. The drive mechanism 3 includes a drive motor 31, which is fixedly installed in the second inner cavity. The other end of the shaft 21 passes through the partition 43 and is fixedly connected to the output shaft end of the drive motor 31. The lower surface of the centrifuge disc 41 can abut against the outer surface of the partition 43, and both the lower surface of the centrifuge disc 41 and the outer surface of the partition 43 are smooth. The partition 43, together with the shaft 21 and the insert block 22, can bear the pressure of the centrifuge disc 41, the pressure plate 12 and the cover plate 11, preventing the shaft 21 from deforming or even breaking due to overload, and improving the service life of the shaft 21. Furthermore, the partition 43 can limit the drive motor 31 to the second inner cavity, reducing the impact of the vibration of the drive motor 31 during operation on the centrifuge disc 41 and the pressure plate 12 located in the first inner cavity, and further reducing the probability that the centrifuge disc 41 will detach from the shaft 21 due to high-speed rotation. The centrifuge 4 is equipped with a start button 44 and a stop button 45. The start button 44 and the stop button 45 are electrically connected to the drive motor 31, so that the drive motor 31 can be started when the start button 44 is pressed, and the motor can be stopped when the stop button 45 is pressed.

[0030] In some embodiments of this application, the upper surface of the centrifuge disc 41 is provided with a plurality of sample slots 413 arranged at intervals along its circumference. The sample slots 413 are used to accommodate centrifuge tubes adapted to them. The outer wall of the mounting rod 13 is movably fitted with a mounting cylinder 133. One end of the mounting cylinder 133 near the pressure plate 12 is fixedly connected to a limiting plate 134. The surface of the limiting plate 134 near the centrifuge disc 41 is provided with a plurality of limiting grooves 1341 for inserting centrifuge tubes. The centrifuge tubes can contain a mixture. When the centrifuge disc 41 rotates at high speed, it will cause the suspended particles in the mixture in the centrifuge tubes to settle, thereby separating the components with different specific gravities. By inserting multiple centrifuge tubes into their corresponding limiting grooves 1341, when the centrifuge disc 41 rotates, it will drive the limiting plate 134 and the mounting cylinder 133 to rotate around the mounting rod 13 through the centrifuge tubes. In this way, not only can the mixture in the centrifuge tubes be prevented from spilling out of the outlet, but the centrifuge tubes can also be limited. The bottom of the limiting plate 134 can be provided with a layer of sponge, and the limiting groove 1341 is provided on the sponge to reduce the possibility of centrifuge tube breakage.

[0031] Furthermore, the upper surface of the centrifuge tray 41 is shaped like an inverted frustum with a downward indentation, and the limiting disk 134 is also shaped like an inverted frustum to fit the upper surface of the centrifuge tray 41. This improves the limiting effect on the centrifuge tubes, making the centrifuge tubes more stably positioned within the sample holder 413.

[0032] Working principle: In use, open the cover plate 11, align the slot 411 on the centrifuge disc 41 with the shaft 21 and the insert block 22, insert multiple centrifuge tubes containing sample solutions into the sample groove 413 on the upper surface of the centrifuge disc 41, and insert the top of the centrifuge tubes into the limiting groove 1341 at the bottom of the limiting disc 134, so that the second mounting groove 132 aligns with the inner rod 4121 in the receiving groove 412. Then close the cover plate 11 directly. The first folding rod 123 and the second folding rod 124 will gradually rotate into the square groove 122 of the pressure plate 12, and the pressure plate 12 will compress the spiral spring 121, thus aligning the mounting plate 12. The mounting rod 13 presses down on the centrifuge disc 41. When the first folding rod 123 and the second folding rod 124 are both inside the square groove 122, the cover plate 11 closes the centrifuge box 4. Finally, the start button 44 on the centrifuge box 4 is pressed to make the drive motor 31 run and the shaft 21 rotate, thereby driving the centrifuge disc 41 to rotate at high speed, so as to centrifuge the sample mixture in the centrifuge tube. This not only makes it easy to replace different types of centrifuge discs 41 and reduces the probability that the centrifuge disc 41 will detach from the shaft 21 due to high speed rotation, but also limits the centrifuge tube, keeping the centrifuge tube within the sample groove 413.

[0033] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high speed centrifuge comprising a centrifuge bowl (4) and a centrifuge disc (41) provided in the centrifuge bowl (4), characterized in that, Also include: The abutting mechanism (1) abuts with the centrifugal disc (41) and is movably arranged on the centrifugal box (4), and presses the centrifugal disc (41) by the following; The connecting mechanism (2) comprises a shaft rod (21) and an insertion block (22), one end of the shaft rod (21) is fixedly connected with the insertion block (22); and, The driving mechanism (3) is arranged in the centrifugal box (4); Wherein, the bottom surface of the centrifugal disc (41) is provided with an insertion slot (411) matched with the shaft rod (21) and the insertion block (22), the other end of the shaft rod (21) is connected with the driving mechanism (3), so that the centrifugal disc (41) can be driven to rotate at high speed when the shaft rod (21) and the insertion block (22) are inserted into the insertion slot (411); The middle part of the upper surface of the centrifugal disc (41) is provided with a containing groove (412), the abutting mechanism (1) comprises: The cover plate (11) is hinged to the centrifugal box (4); The lower surface of the pressing disc (12) is fixedly connected with a spiral spring (121); and, One end of the mounting rod (13) is provided with a first mounting slot (131), the inner wall of the first mounting slot (131) is fixedly connected with the other end of the spiral spring (121) away from the pressing disc (12), the other end of the mounting rod (13) can be inserted into the containing groove (412); Wherein, the inner wall of the containing groove (412) and the outer surface of the mounting rod (13) are both smooth; The other end of the mounting rod (13) is provided with a second mounting slot (132), the middle part of the containing groove (412) is fixedly installed with an inner rod (4121) which can be inserted into the second mounting slot (132), the outer surface of the inner rod (4121) is smooth.

2. The high speed centrifuge of claim 1, wherein, The upper surface of the pressing disc (12) is provided with a square slot (122), the inner wall of the square slot (122) is rotatably connected with a first folding rod (123), the cover plate (11) is rotatably connected with a second folding rod (124), and the second folding rod (124) is rotatably connected with the first folding rod (123).

3. The high speed centrifuge of claim 1, wherein, The centrifugal box (4) has a mounting cavity (42), the inner wall of the centrifugal box (4) is fixedly connected with a partition plate (43) to divide the mounting cavity (42) into a first inner cavity and a second inner cavity; The driving mechanism (3) comprises a driving motor (31), the driving motor (31) is arranged in the second inner cavity, the other end of the shaft rod (21) penetrates through the partition plate (43) and is fixedly connected with the output shaft end of the driving motor (31); The lower surface of the centrifugal disc (41) can abut against the outer surface of the partition plate (43), and the lower surface of the centrifugal disc (41) and the outer surface of the partition plate (43) are both smooth.

4. The high speed centrifuge of claim 1, wherein, The upper surface of the centrifugal disc (41) is provided with a plurality of sample grooves (413) arranged at intervals along the circumference thereof, and the sample grooves (413) are used to accommodate centrifugal tubes matched therewith; The outer wall of the mounting rod (13) movably sheaths a mounting cylinder (133), one end of the mounting cylinder (133) is fixedly connected with a limiting disc (134) close to the pressing disc (12), and a plurality of limiting grooves (1341) for inserting the centrifugal tube are arranged on the surface of the limiting disc (134) close to the centrifugal disc (41).

5. The high speed centrifuge of claim 4, wherein, The upper surface of the centrifugal disc (41) is arranged in a downwardly recessed inverted circular table shape, and the limiting disc (134) is arranged in an inverted circular table shape to adapt to the upper surface of the centrifugal disc (41).

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