A continuous flow centrifuge rotor and baffle structure therefor

Abstract

The utility model relates to a kind of continuous flow centrifuge rotor and its baffle structure, by baffle structure, rotor body inner cavity is separated into multiple independent areas, multiple through holes are distributed to each independent area by the liquid to be separated, and the liquid level of each independent area is kept consistent when gap is maintained in liquid inflow. Baffle structure separates rotor body inner cavity, reduces the generation of vortex phenomenon, through hole ensures that liquid is uniformly distributed to each independent area, and gap keeps liquid level consistent during liquid flow, thereby effectively inhibiting vortex phenomenon, ensuring that particles are uniformly settled, and improving separation efficiency.

Description

Technical Field

[0001] This utility model relates to the fields of biomedicine and life sciences, and laboratory research, and in particular to a continuous flow centrifuge rotor and its baffle structure. Background Technology

[0002] Centrifuges, as important separation equipment, are widely used in biomedical, life science, and laboratory research fields. Especially when processing large-scale liquid samples, their separation efficiency and stability directly affect the reliability of experimental results. Continuous flow centrifuges use the high-speed rotation of the rotor to generate centrifugal force, achieving the separation of components with different densities. In this process, the internal structural design of the rotor is particularly critical, directly affecting the uniformity of liquid flow, particle sedimentation effect, and the maintainability of the equipment.

[0003] In existing technologies, the rotors of continuous flow centrifuges typically employ baffle structures to guide liquid flow and reduce turbulence. However, in practical applications, it has been found that turbulence easily forms inside the rotor when processing large-volume samples, leading to uneven particle settling and a significant decrease in separation efficiency. Furthermore, traditional baffle structures are complex to design, such as multi-stage layered or fixed guide vanes. While these designs can partially alleviate flow turbulence, they suffer from the following drawbacks:

[0004] Cleaning and maintenance are difficult: The complex geometry and connection method of the baffles make disassembly cumbersome, and residual liquid is easy to accumulate in dead corners, increasing the difficulty of cleaning. Long-term use may cause corrosion or blockage and shorten the life of the equipment.

[0005] Uneven liquid distribution: The existing baffle's flow path does not fully consider dynamic balance, and the liquid level is prone to differences in different areas, which exacerbates the formation of eddies.

[0006] Therefore, there is an urgent need for a baffle structure for a continuous flow centrifuge rotor to effectively suppress eddy currents and ensure uniform liquid distribution inside the rotor, thereby improving separation efficiency and equipment reliability. Utility Model Content

[0007] The purpose of this invention is to provide a continuous flow centrifuge rotor and its baffle structure to solve the problem that when centrifuges process large-volume samples, eddies are easily formed inside the rotor, resulting in uneven particle sedimentation and reduced separation efficiency.

[0008] To achieve the above objectives, on the one hand, this utility model provides a baffle structure for a continuous flow centrifuge rotor, wherein the baffle structure is disposed in the rotor body and divides the rotor body cavity into multiple independent regions;

[0009] The baffle structure has multiple through holes, which are used to distribute the liquid to be separated to each independent area of ​​the rotor body.

[0010] The bottom of the baffle structure has a fan-shaped notch at the contact point with the rotor body. The fan-shaped notch is used to maintain a consistent liquid level in each independent area when liquid flows in.

[0011] Furthermore, in the baffle structure of the continuous flow centrifuge rotor, the baffle structure is provided with multiple sub-baffles, and the sub-baffles are fan-shaped.

[0012] Furthermore, in the baffle structure of the continuous flow centrifuge rotor, the number of through holes is the same as the number of sub-baffles, and the through holes are uniformly distributed along the radial direction of the sub-baffles.

[0013] In another aspect of this utility model, a continuous flow centrifuge rotor is also proposed, including the above-mentioned baffle structure, as well as a rotor body, a fixed shaft, a distributor, a rotor cover and a centripetal pump.

[0014] The centripetal pump is coaxially arranged with the fixed shaft, which is a hollow structure. The inner cavity of the fixed shaft is provided with an inlet pipe and an outlet pipe. The inlet pipe is connected to each through hole through the inlet channel of the separator, allowing liquid to flow into the rotor body. The outlet channel of the separator is connected to the outlet pipe through the centripetal pump, and the liquid after separation flows out of the outlet pipe under the action of the centripetal pump.

[0015] The rotor body and rotor cover are connected by threads, and the liquid dispenser is fixed to the rotor cover by a positioning ring.

[0016] Furthermore, in the continuous flow centrifuge rotor, the upper end of the liquid inlet channel of the separator is connected to the lower end of the liquid inlet pipe, and the lower end of the liquid inlet channel of the separator is connected to each through hole of the baffle structure; the lower end of the liquid outlet channel of the separator is connected to the inside of the rotor body, and the upper end of the liquid outlet channel of the separator is connected to the liquid outlet pipe through the centrifugal pump.

[0017] Furthermore, in the continuous flow centrifuge rotor, the input end of the inlet pipe is provided with an inlet pipe connector and an inlet sealing seat, and the input end of the inlet pipe and the inlet pipe connector are press-fitted and sealed by the inlet sealing seat; the output end of the outlet pipe is provided with an outlet pipe connector and an outlet sealing seat, and the output end of the outlet pipe and the outlet pipe connector are press-fitted and sealed by the outlet sealing seat.

[0018] Furthermore, in the continuous flow centrifuge rotor, the inlet pipe is inserted into the outlet pipe, and the inlet pipe is fixed to the outlet pipe by a compression sleeve.

[0019] Furthermore, in the continuous flow centrifuge rotor, the centripetal pump is configured to convert the separated liquid from a high-speed, low-pressure fluid into a low-speed, high-pressure fluid, and discharge it through the outlet pipeline.

[0020] Furthermore, in the continuous flow centrifuge rotor, the liquid outlet pipeline is configured to be connected to the support frame, one end of the support frame is fixed to the liquid outlet sealing seat by a fixing clamp, and the other end away from the fixing clamp is connected to the centrifuge cavity by a thread.

[0021] Furthermore, in the continuous flow centrifuge rotor, the positioning ring and the distributor are fixed by a threaded connection, and the distributor is coaxially installed with the rotor cover.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] The rotor's internal cavity is divided into multiple independent zones by a baffle structure. Multiple through-holes distribute the liquid to be separated into each independent zone, while the notches maintain a consistent liquid level in each zone as liquid flows in. By dividing the rotor's internal cavity, the baffle structure reduces eddy currents; the through-holes ensure uniform liquid distribution to each independent zone; and the notches maintain a consistent liquid level during flow, thus effectively suppressing eddy currents, ensuring uniform particle settling, and improving separation efficiency. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the rotor of a continuous flow centrifuge in one embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the rotor body and baffle structure of a continuous flow centrifuge rotor in one embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the baffle structure of a continuous flow centrifuge rotor in one embodiment of the present invention;

[0027] The components are as follows: 1. Rotor body; 2. Baffle structure; 201. Through hole; 202. Notch; 203. Sub-baffle; 3. Rotor cover; 4. Centripetal pump; 5. Distributor; 501. Discharge channel; 502. Inlet channel; 601. Inlet pipe; 602. Discharge pipe; 7. Positioning ring; 8. Discharge pipe connector; 9. Discharge sealing seat; 10. Compression nut; 11. Inlet sealing seat; 12. Inlet pipe connector; 13. Fixing clamp; 14. Support frame. Detailed Implementation

[0028] The following is a more detailed description of a continuous flow centrifuge rotor and its baffle structure according to the present invention, with reference to schematic diagrams, illustrating preferred embodiments of the present invention. It should be understood that those skilled in the art can modify the present invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the present invention.

[0029] For clarity, not all features of the actual embodiments are described. In the following description, well-known functions and structures are not detailed in detail, as they would confuse the present invention with unnecessary detail. It should be understood that in the development of any actual embodiment, numerous implementation details must be made to achieve the developer's specific goals, such as changes from one embodiment to another according to limitations related to the system or business. Furthermore, it should be understood that such development work may be complex and time-consuming, but is merely routine work for those skilled in the art.

[0030] The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0031] As mentioned in the background section, the existing baffle structure of continuous flow centrifuge rotors suffers from eddy current interference and low separation efficiency in practical applications. Specifically, when processing large-volume samples, eddies easily form inside the rotor, leading to disordered particle settling paths, poor separation uniformity, and a significant decrease in overall efficiency. Furthermore, the existing baffles lack dynamic balance optimization in their flow guidance paths, resulting in significant differences in liquid level in different areas, further inducing localized eddies and affecting separation stability.

[0032] In view of this, such as Figure 1-3 As shown, this utility model provides a baffle structure for a continuous flow centrifuge rotor to solve the problem that when a centrifuge processes large-volume samples, eddies are easily formed inside the rotor, leading to uneven particle sedimentation and reduced separation efficiency.

[0033] Specifically, the baffle structure 2 is disposed inside the rotor body 1 and divides the inner cavity of the rotor body 1 into multiple independent regions; the baffle structure 2 is provided with multiple through holes 201, which are used to distribute the liquid to be separated to each independent region inside the rotor body 1; the bottom of the baffle structure 2 is provided with an equal-height notch 202 at the contact point with the rotor body 1, which is used to maintain the liquid level of each independent region at the same level when the liquid flows in, thereby suppressing the formation of eddies.

[0034] Furthermore, the baffle structure 2 is provided with a plurality of evenly distributed sub-baffles 203.

[0035] In this embodiment, the sub-baffle 203 divides the inner cavity of the rotor body 1 into multiple independent regions. The shape of the sub-baffle 203 is adapted to the inner cavity of the rotor body 1, and in this embodiment, it is fan-shaped. By setting multiple evenly distributed sub-baffles 203, the liquid flow can be effectively guided. In addition, the fan-shaped sub-baffle 203 design simplifies the existing baffle structure 2, making cleaning and maintenance more convenient.

[0036] Furthermore, each of the sub-baffles 203 has a notch 202 of equal height in the contact area between its bottom and the rotor body 1; the through hole 201 is arranged radially along the inside of the sub-baffle 203 to form a guide channel leading to the notch 202.

[0037] Specifically, at least one through hole 201 is uniformly arranged radially inside the sub-baffle 203 to form a radial flow channel. This structure allows the liquid entering the rotor body 1 to be uniformly diffused radially to each independent separation area under the action of centrifugal force, effectively eliminating the problem of uneven distribution of liquid caused by differences in flow path in traditional designs.

[0038] In addition, all sub-baffles 203 have equal-height notches 202 at their bottom contact areas with the rotor body 1, and these notches 202 are fan-shaped. When the equipment is running, the liquid injected through the through-hole 201 enters the bottom of the rotor body 1 through the notches 202 under the action of centrifugal force. Because the height of the notches 202 is consistent, the liquid level rise rate in each separation zone remains synchronized. This isobaric balance design can significantly suppress eddy current generation, improve separation efficiency by 15%-20%, and reduce equipment vibration caused by fluid disturbance, thus extending the service life of key components.

[0039] In another aspect of this utility model, a continuous flow centrifuge rotor is also proposed, including the aforementioned baffle structure 2, as well as a rotor body 1, a fixed shaft, a distributor 5, a rotor cover 3, and a centripetal pump 4; the centripetal pump 4 is coaxially arranged with the fixed shaft, the fixed shaft is a hollow structure, and the inner cavity of the fixed shaft is provided with an inlet pipe 601 and an outlet pipe 602. The inlet pipe 601 is connected to each through hole 201 through the inlet channel 502 of the distributor 5, so that liquid flows into the rotor body 1; the outlet channel 501 of the distributor 5 is connected to the outlet pipe 602 through the centripetal pump 4, and under the action of the centripetal pump 4, the liquid after separation flows out of the outlet pipe 602; the rotor body 1 and the rotor cover 3 are connected by threads, and the distributor 5 is fixed to the rotor cover 3 by a positioning ring 7.

[0040] It should be noted that the centripetal pump 4 is coaxially aligned with the fixed shaft of the hollow structure, allowing the liquid to smoothly enter and exit the rotor body 1. The inlet channel 502 of the separator 5 ensures that the liquid flows evenly into the rotor body 1, and the outlet channel 501 ensures that the separated liquid is smoothly discharged. The threaded connection between the rotor body 1 and the rotor cover 3, as well as the positioning ring fixing between the separator 5 and the rotor cover 3, ensures the stability and maintainability of the entire assembly.

[0041] Furthermore, the upper end of the liquid inlet channel 502 of the distributor 5 is connected to the lower end of the liquid inlet pipe 601, allowing liquid to flow into the distributor 5 from the liquid inlet pipe 601; the lower end of the liquid inlet channel 502 of the distributor 5 is connected to each through hole 201 of the baffle structure 2, ensuring that the liquid can be further evenly distributed to each independent area within the rotor body 1; the lower end of the liquid outlet channel 501 of the distributor 5 is connected to the interior of the rotor body 1, allowing the separated liquid to flow out from the interior of the rotor body 1; the upper end of the liquid outlet channel 501 of the distributor 5 is connected to the liquid outlet pipe 602 through the centripetal pump 4, ensuring that the separated liquid can further flow out of the device through the action of the centripetal pump 4.

[0042] Furthermore, the inlet pipe 601 is provided with an inlet pipe connector 12 and an inlet sealing seat 11 at its input end, and the input end of the inlet pipe 601 and the inlet pipe connector 12 are press-fitted and sealed by the inlet sealing seat 11; the outlet pipe 602 is provided with an outlet pipe connector 8 and an outlet sealing seat 9 at its output end, and the outlet end of the outlet pipe 602 and the outlet pipe connector 8 are press-fitted and sealed by the outlet sealing seat 9. This press-fit sealing method solves the sealing problem between the inlet pipe 601 and the outlet pipe 602, ensuring that the liquid does not leak during inflow and outflow, thereby improving the separation efficiency and reliability of the centrifuge.

[0043] Furthermore, the inlet pipe 601 is inserted into the outlet pipe 602, and the inlet pipe 601 is threadedly connected and fixed to the outlet pipe 602 by a clamping sleeve 10.

[0044] Specifically, the connection and fixation between the inlet pipe 601 and the outlet pipe 602 are achieved through insertion and threaded connection. The inlet pipe 601 is inserted into the outlet pipe 602 and fixed to the outlet pipe 602 by tightening the screw sleeve 10. This method can ensure the stability and sealing of the connection, thereby solving the problem of unstable connection between the inlet pipe 601 and the outlet pipe 602.

[0045] Furthermore, the centrifugal pump 4 is configured to convert the separated liquid from a high-speed, low-pressure fluid to a low-speed, high-pressure fluid, and discharge it through the outlet pipe 602. This configuration effectively discharges the separated liquid from the centrifuge.

[0046] Furthermore, the liquid outlet pipe 602 is configured to be connected to the support frame 14. One end of the support frame 14 is fixed to the liquid outlet sealing seat 9 by a fixing clamp 13, and the other end away from the fixing clamp 13 is connected to the centrifuge cavity by a thread.

[0047] The fixing clamp 13 provides a reliable fixing point to prevent the outlet pipe 602 from loosening due to vibration or other factors during operation. Furthermore, the threaded connection further enhances the fixing effect between the support frame 14 and the centrifuge chamber, ensuring that the entire system remains stable and sealed even under high-speed rotation conditions.

[0048] Furthermore, the positioning ring 7 is fixed to the distributor 5 by a threaded connection, and the distributor 5 is coaxially installed with the rotor cover 3.

[0049] Specifically, the positioning ring 7 is fixed to the separator 5 via a threaded connection, and the separator 5 is coaxially mounted with the rotor cover 3. This not only ensures a stable connection between the separator 5 and the rotor cover 3 but also prevents the separator 5 from loosening or falling off due to unstable connection during high-speed rotation. Furthermore, this method effectively solves the problem of unstable fixing between the separator 5 and the rotor cover 3, improving the reliability and separation efficiency of the equipment.

[0050] Furthermore, the separation of the liquid to be separated using the aforementioned continuous flow centrifuge rotor specifically includes the following steps: starting the drive device to drive the rotor 1 to rotate at high speed; the peristaltic pump pumps the liquid to be separated into the inlet pipe 6 through the inlet pipe connector 12; the inlet pipe 6 guides the liquid into the inlet channel 502 of the separator 5; the inlet channel 502 guides the liquid into the through hole 201 of the baffle 2; the liquid is evenly added into the cavity of the rotor 1 through the through hole 201: the fan-shaped notch 202 ensures that the liquid level inside the cavity of the rotor 1 remains consistent; the separated liquid enters the centrifugal pump 4 through the outlet channel 501 of the separator 5; the liquid is transformed from a high-speed fluid into a high-pressure fluid by the centrifugal pump 4, and discharged through the outlet sealing seat 9 and the outlet pipe connector 8.

[0051] In summary, in the continuous flow centrifuge rotor and its baffle structure provided in this embodiment of the invention, the baffle structure divides the rotor's internal cavity into multiple independent regions. Multiple through holes distribute the liquid to be separated to each independent region, while the notch maintains a consistent liquid level in each independent region during liquid inflow. By dividing the rotor's internal cavity, the baffle structure reduces the generation of eddies, the through holes ensure uniform liquid distribution to each independent region, and the notch maintains a consistent liquid level during liquid flow, thereby effectively suppressing eddies, ensuring uniform particle settling, and improving separation efficiency.

[0052] The above are merely preferred embodiments of this utility model and do not constitute any limitation on this utility model. Any equivalent substitutions or modifications made by those skilled in the art to the technical solutions and contents disclosed in this utility model without departing from the scope of the technical solutions of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A baffle structure for a continuous flow centrifuge rotor, characterized in that, The baffle structure is disposed in the rotor body and divides the inner cavity of the rotor body into multiple independent regions; The baffle structure has multiple through holes, which are used to distribute the liquid to be separated to each independent area of ​​the rotor body. The bottom of the baffle structure has a notch at the same height as the rotor body.

2. The baffle structure of the continuous flow centrifuge rotor according to claim 1, characterized in that, The baffle structure is provided with multiple evenly distributed sub-baffles.

3. The baffle structure of the continuous flow centrifuge rotor according to claim 2, characterized in that, Each of the sub-baffles has a notch at the same height in the contact area between its bottom and the rotor body; the through hole is arranged radially along the inside of the sub-baffle to form a flow channel leading to the notch.

4. A continuous flow centrifuge rotor, characterized in that, Including the baffle structure as described in claims 1-3 above, it also includes a rotor body, a fixed shaft, a liquid separator, a rotor cover, and a centripetal pump; The centripetal pump is coaxially arranged with the fixed shaft, which is a hollow structure. The inner cavity of the fixed shaft is provided with an inlet pipe and an outlet pipe. The inlet pipe is connected to each through hole through the inlet channel of the separator, allowing liquid to flow into the rotor body. The outlet channel of the separator is connected to the outlet pipe through the centripetal pump, and the liquid after separation flows out of the outlet pipe under the action of the centripetal pump. The rotor body and rotor cover are connected by threads, and the liquid dispenser is fixed to the rotor cover by a positioning ring.

5. The continuous flow centrifuge rotor according to claim 4, characterized in that, The upper end of the liquid inlet channel of the liquid separator is connected to the lower end of the liquid inlet pipeline, and the lower end of the liquid inlet channel of the liquid separator is connected to each through hole of the baffle structure; the lower end of the liquid outlet channel of the liquid separator is connected to the inside of the rotor body, and the upper end of the liquid outlet channel of the liquid separator is connected to the liquid outlet pipeline through the centripetal pump.

6. The continuous flow centrifuge rotor according to claim 4, characterized in that, The inlet pipe is provided with an inlet pipe connector and an inlet sealing seat at its input end. The inlet pipe and the inlet pipe connector are press-fitted and sealed by the inlet sealing seat. The outlet pipe is provided with an outlet pipe connector and an outlet sealing seat at its output end. The outlet pipe and the outlet pipe connector are press-fitted and sealed by the outlet sealing seat.

7. The continuous flow centrifuge rotor according to claim 4, characterized in that, The inlet pipe is inserted into the outlet pipe, and the inlet pipe is fixed to the outlet pipe by a compression sleeve.

8. The continuous flow centrifuge rotor according to claim 4, characterized in that, The centripetal pump is configured to convert the separated liquid from a high-speed, low-pressure fluid into a low-speed, high-pressure fluid, and discharge it through the outlet pipeline.

9. The continuous flow centrifuge rotor according to claim 8, characterized in that, The liquid outlet pipeline is configured to be connected to the support frame. One end of the support frame is fixed to the liquid outlet sealing seat by a fixing clamp, and the other end away from the fixing clamp is connected to the centrifuge cavity by a thread.

10. The continuous flow centrifuge rotor according to claim 4, characterized in that, The positioning ring is fixed to the distributor by a threaded connection, and the distributor is coaxially installed with the rotor cover.

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