Centrifugal machine air shield and centrifugal machine

Abstract

The utility model provides an air shield of a centrifugal machine. Relates to the field of centrifugal machines, and aims to solve the problem that an existing centrifugal machine wind shield bottom is insufficient in deformation resistance, a turnup extends in the radial direction of a wind shield bottom shell and is turned to the outside of a cavity, the direction of the turnup is changed, and the inner wall of the cavity is in smooth transition connection with the turnup at the top opening position. Compared with the prior art, an outward supporting structure is additionally arranged at the top opening of the wind shield bottom shell equivalently, the bending resistance and torsion resistance of the structure can be improved, so that the deformation resistance is improved, the safety and reliability problems caused by deformation are solved, the position and the direction of the flange are changed, the flange cannot be hooked and collided when a sample is taken and placed, and the test efficiency is improved. Therefore, the problems that the sample placing and taking efficiency is influenced and the sample is possibly damaged are solved.

Description

Technical Field

[0001] This utility model relates to the field of centrifuges, and in particular to a centrifuge air shield and a centrifuge. Background Technology

[0002] Centrifuges are instruments used for separating substances and are essential laboratory equipment, widely used in life sciences, medicine, chemistry, environmental protection, and other fields. The air shield is a crucial component of large-capacity centrifuges. The air shield is fixed to the centrifuge rotor and mounted on the motor shaft. The air shield reduces air resistance generated by the horizontal rotor during high-speed rotation, ensuring stable centrifuge operation.

[0003] The improved centrifuge shield structure solves the problem of cumbersome operation caused by the need to manually remove the shield cover after centrifugation. The shield cover is movably suspended from the door cover by a connecting rod via a fixed cover. Opening the door cover opens the shield cover simultaneously, and when the door cover closes, the shield cover automatically centers and closes with the bottom cover using the cooperation of the fixed cover and guide components. However, the top opening of the centrifuge bottom uses a structure with vertical sidewalls and inwardly turned edges, resulting in insufficient resistance to deformation. During high-speed centrifuge rotation, uneven mass distribution along the edge of the shield bottom opening leads to deformation and cracks after prolonged operation. These cracks are more likely to expand during high-speed rotation, affecting operational safety and reliability. Furthermore, because the opening edge is turned inward, samples are prone to snagging or colliding with the turned edge when being removed from the shield, causing sample damage and affecting sample placement and retrieval efficiency. Utility Model Content

[0004] The purpose of this invention is to address the deficiencies of existing technologies by providing a centrifuge wind shield. This wind shield's design involves extending and folding a flange radially outward from the bottom shell to the outside of the cavity, thus changing the flange's direction. The inner wall of the cavity smoothly transitions to the flange at the top opening. When the flange is outside the cavity, it effectively adds an outward supporting structure at the top opening of the wind shield's bottom shell, increasing the structure's resistance to bending and torsion, thereby improving its resistance to deformation and solving safety and reliability issues caused by deformation. Furthermore, by changing the position and direction of the flange, it prevents snagging or collisions with the flange during sample placement and removal, thus solving the problems of affecting sample placement and removal efficiency and potentially damaging the samples.

[0005] The primary objective of this invention is to provide a centrifuge air shield, which employs the following technical solution:

[0006] It includes a wind shield bottom shell, with a cavity formed inside the wind shield bottom shell that has a top opening. The wind shield bottom shell has a flange at the top opening of the cavity. The flange extends radially along the wind shield bottom shell and folds out to the outside of the cavity. The inner wall of the cavity smoothly transitions to the flange at the top opening position. The top of the flange forms an annular fitting part for fitting the wind shield cover.

[0007] Furthermore, the bottom shell of the wind shield is fitted with a wind shield cover, which abuts against the annular fitting part to seal the cavity.

[0008] Furthermore, a handle is installed on the wind shield cover.

[0009] Furthermore, the sidewall of the wind shield bottom shell, between the position of the maximum diameter of the sidewall and the position of the opening at the top of the cavity, has a gradually decreasing diameter, so that the diameter of the opening position of the cavity is smaller than the maximum diameter of the sidewall of the wind shield bottom shell.

[0010] Furthermore, the gradient structure forms a conical segment with a cone angle of 0-40°.

[0011] Furthermore, the cross-section of the flange is C-shaped, with the opening of the C-shaped cross-section facing the bottom of the wind shield bottom shell.

[0012] Furthermore, the flanges are distributed circumferentially along the bottom shell of the wind shield and are connected end to end in a ring.

[0013] Furthermore, the bottom surface of the wind shield shell is provided with a recess, which extends into the cavity to form a protrusion, and the position of the recess matches the external rotor assembly.

[0014] Furthermore, a support for accommodating the sample is installed around the protrusion within the cavity.

[0015] The second objective of this invention is to provide a centrifuge that utilizes the centrifuge wind shield provided in the first objective.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are:

[0017] To address the insufficient deformation resistance of existing centrifuge wind shield bottoms, this invention extends the flange radially along the bottom shell of the wind shield and folds it outside the cavity, changing the flange's direction. The inner wall of the cavity smoothly transitions to the flange at the top opening. When the flange is outside the cavity, it is equivalent to adding an outward support structure at the top opening of the wind shield bottom shell, increasing the structure's bending and torsional resistance, thereby improving deformation resistance and solving safety and reliability issues caused by deformation. Furthermore, changing the position and direction of the flange prevents it from snagging or colliding with the sample during sample placement and retrieval, thus solving the problems of affecting sample placement and retrieval efficiency and potentially damaging the sample.

[0018] When the centrifuge rotates at high speed, the wind shield is subjected to various forces, including centrifugal force and air resistance. The gradually tapering conical structure allows the force to be gradually distributed and transmitted along the conical surface when the wind shield's bottom shell is subjected to stress. Compared to a straight cylindrical structure, the conical section avoids stress concentration in a single area, thus reducing the possibility of excessive local stress leading to deformation. The conical section is similar to a cylindrical structure with a variable cross-section, with a larger diameter at the bottom that gradually decreases upwards. This shape provides better stability when resisting external forces. The conical section makes the overall structure of the wind shield more stable and better disperses and transmits the force on the bottom, while the flanged edge strengthens the top opening, a vulnerable area prone to deformation. The two work together to enhance the wind shield's resistance to deformation. Attached Figure Description

[0019] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0020] Figure 1 This is a schematic diagram of the external structure of the centrifuge wind shield in one or more embodiments of the present invention.

[0021] Figure 2 This is a schematic diagram of the internal structure of the centrifuge wind shield in one or more embodiments of the present invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of the bottom shell of the wind shield in one or more embodiments of the present invention.

[0023] In the picture, 1. Handle; 2. Wind shield bottom shell; 3. Wind shield cover; 4. Gradient structure; 5. Flanged edge. Detailed Implementation

[0024] Example 1

[0025] In a typical embodiment of this utility model, such as Figures 1-3 As shown, a centrifuge wind shield is proposed.

[0026] Current wind shield structures suffer from insufficient strength at the opening and can negatively impact sample handling. To address this, this embodiment provides a centrifuge wind shield that improves the structure of the wind shield bottom shell 2 by adjusting the flange 5 at the top opening of the wind shield bottom shell 2. The flange 5 extends radially along the wind shield bottom shell 2 and folds outward to the outside of the cavity, ensuring a smooth connection between the inner wall of the cavity and the flange 5. This solves the problems of insufficient deformation resistance and impact on sample handling in existing centrifuge wind shields.

[0027] like Figure 1 , Figure 2 and Figure 3As shown, the main structure of the centrifuge wind shield consists of a bottom shell 2 and a cover 3. The bottom shell 2 forms a cavity with an open top, which is the basic structure of the entire wind shield and is used to accommodate the sample and cooperate with other components. The bottom shell 2 can connect to the rotor assembly of the centrifuge, providing a relatively closed and stable space for the sample to be centrifuged, ensuring the safety and stability of the sample during the centrifugation process.

[0028] The wind shield bottom shell 2 has a flange 5 at the top opening of the cavity. The flange 5 extends radially along the bottom shell 2 and folds outward to the outside of the cavity, enhancing the structural strength at the top opening of the wind shield bottom shell 2. By setting the flange 5, an outward supporting structure is added at the top opening, which can significantly increase the structure's resistance to bending and torsion. During the high-speed rotation of the centrifuge, it can effectively resist deformation caused by external forces such as centrifugal force, improve the wind shield's resistance to deformation, reduce the possibility of defects such as cracks caused by deformation, and thus improve the safety and reliability of the centrifuge operation.

[0029] The inner wall of the cavity smoothly transitions to the flange 5 at the top opening, avoiding stress concentration points at the opening. When the centrifuge is running, the wind shield is subjected to various forces, and stress concentration points can easily lead to material fatigue damage, resulting in deformation. The smooth transition allows the force to be evenly transmitted on the bottom shell 2 of the wind shield. This further enhances the wind shield's resistance to deformation, while ensuring the smoothness of the internal structure of the wind shield, which is beneficial for sample handling.

[0030] The top of the flange 5 forms an annular mating part for fitting the wind shield cover 3, achieving a tight fit with the wind shield cover 3.

[0031] like Figure 1 and Figure 2 As shown, the bottom shell 2 of the wind shield is fitted with a wind shield cover 3. The wind shield cover 3 abuts against the annular fitting part to seal the cavity, forming a completely enclosed space. This ensures that the sample inside the centrifuge is in a stable environment free from external interference when the centrifuge is running at high speed. It effectively prevents external dust and impurities from entering the cavity, avoiding contamination of the sample. It also prevents the airflow generated by the high-speed rotation inside the cavity from escaping, interfering with the surrounding environment of the centrifuge, or affecting the operational stability of the centrifuge. Furthermore, it improves the purity and stability of the centrifuge's operating environment, providing a reliable guarantee for the accuracy of experimental results.

[0032] like Figure 1 As shown, a handle 1 is installed on the wind shield cover 3 to facilitate the operator to open and close the wind shield cover 3.

[0033] like Figure 2 and Figure 3As shown, the sidewall of the wind shield bottom shell 2, from its maximum diameter to the opening at the top of the cavity, is a gradually decreasing diameter gradient structure 4. This makes the diameter at the cavity opening smaller than the maximum diameter of the sidewall of the wind shield bottom shell 2, and the gradient structure 4 forms a conical section. The wider diameter at the bottom of the conical section provides more stable support, while the gradually decreasing diameter effectively disperses external forces, enhances the overall structural strength of the wind shield, reduces energy loss during centrifuge operation, improves operating efficiency, and simultaneously enhances the wind shield's resistance to deformation, extending its service life.

[0034] The cone angle of the tapered segment is 0-40°. For example... Figure 3 As shown, the angle α between the sidewall of the conical section and the axis of the bottom shell 2 of the wind shield is α, with an angle range of 0-20°. The purpose of precisely setting the cone angle range is to find the optimal balance between aerodynamic performance and structural stability. If the cone angle is too small, its guiding effect on airflow is not significant, and it cannot effectively reduce air resistance; if the cone angle is too large, it may affect the structural strength of the wind shield and increase the difficulty of manufacturing. When the cone angle is between 0-40°, that is, α is between 0-20°, the guiding effect of the conical section on airflow can be fully utilized to reduce drag, while ensuring sufficient structural stability of the wind shield.

[0035] like Figure 3 As shown, the cross-section of the flange 5 is C-shaped, with the opening of the C-shaped cross-section facing the bottom of the wind shield bottom shell 2. The C-shaped cross-section enhances the structural strength and deformation resistance of the flange 5. Compared to a common flat flange 5, the C-shaped cross-section has better bending and torsional resistance, allowing it to better maintain its shape and resist deformation under the powerful centrifugal force generated by the high-speed rotation of the centrifuge. The bottom-facing opening forms a ring-shaped mating part at the top of the flange 5, facilitating the installation and positioning of the wind shield cover 3. This results in a tighter fit between the wind shield cover 3 and the flange 5, improving the structural stability at the top opening of the wind shield bottom shell 2, reducing the risk of deformation of the flange 5 during use, and ensuring the overall sealing performance of the wind shield, thus improving the safety and reliability of the centrifuge operation.

[0036] The flanges 5 are distributed circumferentially along the bottom shell 2 of the wind shield and connect end to end in a ring, ensuring the structural integrity and uniformity of the opening at the top of the bottom shell 2. The ring-shaped flanges 5 enable the bottom shell 2 of the wind shield to bear external forces evenly in all directions, avoiding deformation or damage caused by uneven local stress. At the same time, the ring structure can better fit with the wind shield cover 3 to form a good sealing effect.

[0037] like Figure 3As shown, the bottom surface of the wind shield bottom shell 2 has a recess that extends into the cavity to form a protrusion. The position of the recess matches the external rotor assembly. This ensures precise positioning and reliable connection between the wind shield bottom shell 2 and the external rotor assembly. During centrifuge operation, the high-speed rotating rotor assembly generates significant forces. The cooperation between the recess and the rotor assembly ensures stable relative positioning between the wind shield bottom shell 2 and the rotor assembly, preventing vibration, noise, and other problems caused by unstable connection, which could affect the centrifuge's operating performance and service life.

[0038] Depending on the requirements, connection holes, connection blocks, and other docking structures can also be provided on the recess to facilitate installation and cooperation with external rotor components.

[0039] A support structure is installed around the protrusion within the centrifuge chamber to accommodate the sample, providing a stable and orderly placement. The support structure can be adapted to the shape of the container containing the sample. During the high-speed rotation of the centrifuge, the sample requires a stable support structure to prevent shaking, collisions, or other damage that could lead to inaccurate experimental results. The support structure, installed around the protrusion, makes efficient use of the internal space of the centrifuge shield and leverages the structural stability of the protrusion to provide more reliable support for the sample.

[0040] Example 2

[0041] In another typical embodiment of this utility model, such as Figures 1-3 As shown, a centrifuge is proposed.

[0042] The centrifuge utilizes the centrifuge wind shield as shown in Example 1 to improve the overall performance of the centrifuge.

[0043] The centrifuge is equipped with a rotor assembly, which can adopt a structure of servo motor and reducer. The output end of the reducer serves as the output section of the rotor assembly. The recess on the bottom surface of the wind shield shell 2 mates with the output end of the reducer, ensuring that the wind shield maintains a stable relative position with the rotor assembly when the centrifuge is running at high speed, thus enhancing the overall structural stability of the centrifuge. The tight fit between the wind shield cover 3 and the wind shield shell 2 forms a closed cavity, effectively isolating external impurities and creating a pure operating environment inside the centrifuge, ensuring the safety of the centrifuge's core components and the samples.

[0044] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A centrifuge wind shield, characterized in that, It includes a wind shield bottom shell, with a cavity formed inside the wind shield bottom shell that has a top opening. The wind shield bottom shell has a flange at the top opening of the cavity. The flange extends radially along the wind shield bottom shell and folds out to the outside of the cavity. The inner wall of the cavity smoothly transitions to the flange at the top opening position. The top of the flange forms an annular fitting part for fitting the wind shield cover.

2. The centrifuge wind shield as described in claim 1, characterized in that, The bottom shell of the wind shield is fitted with a wind shield cover, which abuts against the annular fitting part to seal the cavity.

3. The centrifuge wind shield as described in claim 2, characterized in that, The wind shield cover is equipped with a handle.

4. The centrifuge wind shield as described in claim 1, characterized in that, The sidewall of the wind shield bottom shell, from the position of the maximum diameter of the sidewall to the position of the opening at the top of the cavity, has a gradually decreasing diameter structure, so that the diameter of the opening position of the cavity is smaller than the maximum diameter of the sidewall of the wind shield bottom shell.

5. The centrifuge wind shield as described in claim 4, characterized in that, The gradient structure forms a conical segment with a cone angle of 0-40°.

6. The centrifuge wind shield as described in claim 1, characterized in that, The cross-section of the flange is C-shaped, with the opening of the C-shaped cross-section facing the bottom of the wind shield shell.

7. The centrifuge wind shield as described in claim 6, characterized in that, The flanges are distributed circumferentially along the bottom shell of the wind shield and are connected end to end in a ring.

8. The centrifuge wind shield as described in claim 1, characterized in that, The bottom surface of the wind shield shell is provided with a recess, which extends into the cavity to form a protrusion, and the position of the recess is matched with the external rotor assembly.

9. The centrifuge wind shield as described in claim 8, characterized in that, A support for accommodating the sample is installed around the protrusion inside the cavity.

10. A centrifuge, characterized in that, The centrifuge wind shield as described in any one of claims 1-9.

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