High-speed trace sealing rotary head with magnetic steel

Abstract

A rotor is provided with a centrifugal cavity with an upper opening, the middle of the rotor is provided with an assembly cavity used for being connected with a main shaft of a driving motor, and the assembly cavity extends out of the centrifugal cavity upwards; the middle of the upper cover is provided with a middle hole correspondingly sleeved with the assembling cavity, the upper edge of the centrifugal cavity is provided with a limiting flange corresponding to the upper cover, and the middle of the upper cover arches upwards so that the edge of the upper cover can obliquely abut against the upper surface of the limiting flange. The part, upwards extending out of the upper cover, of the assembly cavity is in threaded connection with a locking sleeve, and the upper cover is extruded by the locking sleeve to deform in the radial direction so as to abut against the inner wall of the centrifugal cavity. The upper cover with the section having a certain radian is arranged, along with longitudinal pressurization, the upper cover tightly extrudes the rotor in the longitudinal direction and the radial direction, so that double-layer sealing is formed, the sealing effect is improved, the requirement for the strength of the upper cover is further low, the upper cover can be designed to be lighter, and the production cost is lower.

Description

Technical Field

[0001] This utility model belongs to the technical field of centrifuge rotor installation, specifically relating to a high-speed micro-sealed rotor with magnets. Background Technology

[0002] As a crucial component of a centrifuge, the rotor generates powerful centrifugal force through the high-speed rotation of the motor shaft, separating solid particles from the liquid in a suspension, or separating two immiscible liquids of different densities in an emulsion. To ensure the stability of the suspension within the rotor, a top cover is installed above it. Currently, the top cover is typically installed and sealed by longitudinal compression. Therefore, the contact surface between the top cover and the rotor needs to be flat, and the top cover must have sufficient strength to ensure a good seal. This results in a complex structure and high production costs for the top cover.

[0003] Therefore, there is a need to provide an improved technical solution that addresses the shortcomings of the existing technology. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art. This invention provides a high-speed micro-sealing rotor with a magnet.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A high-speed micro-sealing rotor with a magnet, comprising:

[0007] The rotor has a centrifugal cavity with an open top and an assembly cavity in the middle for connecting the main shaft of the drive motor, the assembly cavity extending upward out of the centrifugal cavity;

[0008] The upper cover has a central hole in the middle that corresponds to the assembly cavity, and the centrifugal cavity has a limiting flange on the upper edge that corresponds to the upper cover. The middle part of the upper cover is arched upward so that its edge is inclined and abuts against the upper surface of the limiting flange.

[0009] The portion of the assembly cavity extending upwards from the upper cover is threadedly connected to a locking sleeve. The upper cover is compressed by the locking sleeve and deforms radially to press against the inner wall of the centrifuge cavity.

[0010] Preferably, the edge of the upper cover is provided with a skirt that extends downwards corresponding to the limiting flange.

[0011] Preferably, the lower edge of the skirt plate protrudes outward to form a corresponding annular groove of the limiting flange, and the annular groove engages with the limiting flange as the upper cover deforms radially.

[0012] Preferably, the lower end of the locking sleeve is provided with a stepped platform that extends into the upper cover, and the portion of the stepped platform extending downward out of the upper cover is provided with a retaining spring.

[0013] Preferably, the upper end of the locking sleeve is provided with an anti-slip handwheel.

[0014] Preferably, the assembly cavity is provided with a plurality of inclined extending assembly grooves, which are evenly distributed circumferentially within the assembly cavity.

[0015] Preferably, the assembly cavity is cylindrical, and a central hole corresponding to the inner hole of the assembly cavity is provided in the middle of the locking sleeve.

[0016] Preferably, the top cover is made of rubber.

[0017] Beneficial effects: By setting the top cover with a certain curvature, the rotor is squeezed by the longitudinal pressure, thus forming a double seal, improving the sealing effect. Furthermore, the strength requirements of the top cover are lower, and the top cover can be designed to be lighter, resulting in lower production costs. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. Wherein:

[0019] Figure 1 This is a simplified structural diagram of the sealing rotor in a specific embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of the top cover in a specific embodiment of the present utility model;

[0021] Figure 3 This is a simplified top view of the locking sleeve in a specific embodiment provided by this utility model;

[0022] Figure 4 for Figure 1 Enlarged diagram of point A in the middle.

[0023] In the diagram: 1. Rotor; 2. Assembly cavity; 3. Top cover; 4. Locking sleeve; 5. Assembly groove; 6. Limiting flange; 7. Skirt; 8. Handwheel. Detailed Implementation

[0024] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the protection scope of this utility model.

[0025] In the description of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not require that this utility model be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. The terms "connected" and "linked" used in this utility model should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; they can refer to a direct connection or an indirect connection through intermediate components. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0026] The present invention will now be described in detail with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0027] like Figure 1-4 As shown, this application provides a high-speed micro-sealing rotor with magnets, including a rotor 1, an upper cover 3, and a locking sleeve 4. The rotor 1 is an injection-molded part with an open centrifugal cavity at the top. The rotor 1 has an assembly cavity 2 for connecting the main shaft of the drive motor concentrically arranged in the middle of the rotor 1. The centrifugal cavity and the assembly cavity 2 are distributed through each other. The upper half of the centrifugal cavity has at least a columnar inner wall. The assembly cavity 2 is cylindrical, and the outer surface of the part located inside the centrifugal cavity is a columnar surface.

[0028] The assembly cavity 2 and the centrifuge cavity have a certain diameter difference to meet the requirements for taking and putting away test tubes. The assembly cavity 2 extends upward into the centrifuge cavity to connect the upper cover 3 and the locking sleeve 4. The upper cover 3 has a corresponding central hole in the middle to fit the assembly cavity 2. The upper cover 3 can slide longitudinally through the central hole to open and close the upper cover 3. The upper edge of the centrifuge cavity has a corresponding limiting flange 6 for the upper cover 3. The limiting flange 6 is annular with a square cross-section. The middle of the upper cover 3 is arched upward, so that the cross-section of the upper cover 3 is arc-shaped and the edge of the upper cover 3 is inclined to abut against the upper surface of the limiting flange 6.

[0029] A locking sleeve 4 is threadedly connected to the part of the upper cover 3 that extends upward from the assembly cavity 2. The locking sleeve 4 can squeeze the upper cover 3 downward by rotating. As the upper cover 3 is squeezed by the locking sleeve 4, it deforms radially under the limit of the limiting flange 6, thereby pressing against the inner wall of the centrifuge cavity and the upper surface of the limiting flange 6. The deformation is generated by the extrusion force, and this deformation can squeeze the inner wall of the centrifuge cavity to meet the sealing requirements.

[0030] In an optional embodiment, the edge of the upper cover 3 is provided with a skirt 7 that extends downward to form a corresponding limiting flange 6. The longitudinal length of the skirt 7 should extend below the limiting flange 6 to assist in positioning the upper cover 3 and prevent the upper cover 3 from failing to seal.

[0031] Furthermore, the lower edge of the skirt plate 7 protrudes outward to form a corresponding limiting flange 6 annular groove. The outward protruding part is an annular flange. When the annular groove deforms radially with the upper cover 3, it can engage with the limiting flange 6, thereby further improving the sealing performance.

[0032] In an optional embodiment, the main body of the locking sleeve 4 is a set, and a stepped platform with a reduced outer diameter is provided at its lower end, which extends into the upper cover 3. The outer diameter of the stepped platform is adapted to the hollow inner diameter of the upper cover 3. A retaining spring is provided at the part of the stepped platform that extends downward out of the upper cover 3. Correspondingly, a retaining spring groove is provided at the lower end of the stepped platform. The retaining spring groove stops the upper cover 3, thereby forming a rotatable connection with the upper cover 3, so as not to affect the normal rotation of the locking sleeve 4. During the compression process, the main body of the locking sleeve 4 and the upper cover 3 are compressed and sealed.

[0033] The upper end of the locking sleeve 4 is equipped with an anti-slip handwheel 8. The assembly cavity 2 is cylindrical, and the middle of the locking sleeve 4 is provided with a center hole corresponding to the inner hole of the assembly cavity 2. The inner hole of the assembly cavity 2 is connected to the motor spindle through a spline. Specifically, the upper end of the inner hole of the assembly cavity 2 has a stepped platform, so it can be assembled onto the motor spindle by bolt threads. The rotor 1 and the motor spindle are locked with bolts. After centrifugation, the rotor 1 can be quickly removed and placed elsewhere for settling. At this time, other rotors 1 can be replaced for centrifugation, which solves the problem of idleness during the sedimentation process of the centrifuge in the prior art and makes full use of the centrifuge's centrifugation function.

[0034] Multiple inclined and extending assembly grooves 5 are provided in the assembly cavity 2. The diameter and depth of the assembly grooves 5 are adapted to the test tube. The multiple assembly grooves 5 are evenly distributed around the circumference of the assembly cavity 2 to maintain the balance of the rotor 1. The top cover 3 can be made of rubber or other materials with elastic deformation capabilities.

[0035] In this embodiment, the skirt plate 7 has a certain thickness. The side of the skirt plate 7 away from the limiting flange 6 is connected to the inner wall of the upper cover 3 through a smooth transition surface, thereby ensuring that the skirt plate 7 has sufficient radial extrusion force. In the non-extrusion state, the outer diameter of the annular protrusion under the skirt plate 7 is not greater than the inner diameter of the limiting flange 6.

[0036] The upper surface of the cover has a flat surface in the middle of the corresponding locking sleeve.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be within the scope of protection of the pending claims of the present utility model.

Claims

1. A high-speed micro-sealing rotor with a magnet, characterized in that, include: The rotor has a centrifugal cavity with an open top and an assembly cavity in the middle for connecting the main shaft of the drive motor, the assembly cavity extending upward out of the centrifugal cavity; The upper cover has a central hole in the middle that corresponds to the assembly cavity, and the centrifugal cavity has a limiting flange on the upper edge that corresponds to the upper cover. The middle part of the upper cover is arched upward so that its edge is inclined and abuts against the upper surface of the limiting flange. The portion of the assembly cavity extending upwards from the upper cover is threadedly connected to a locking sleeve. The upper cover is compressed by the locking sleeve and deforms radially to press against the inner wall of the centrifuge cavity.

2. The high-speed micro-sealing rotor with magnet as described in claim 1, characterized in that, The upper cover edge is provided with a skirt that extends downwards corresponding to the limiting flange.

3. The high-speed micro-sealing rotor with magnet as described in claim 2, characterized in that, The lower edge of the skirt panel protrudes outward to form a corresponding limiting flange groove, and the groove engages with the limiting flange as the upper cover deforms radially.

4. The high-speed micro-sealing rotor with magnet as described in claim 1, characterized in that, The lower end of the locking sleeve is provided with a stepped platform that extends into the upper cover, and the portion of the stepped platform that extends downward out of the upper cover is provided with a retaining spring.

5. The high-speed micro-sealing rotor with magnet as described in claim 1, characterized in that, The upper end of the locking sleeve is equipped with an anti-slip handwheel.

6. The high-speed micro-sealing rotor with magnet as described in claim 1, characterized in that, The assembly cavity is provided with multiple inclined extending assembly slots, which are evenly distributed around the circumference of the assembly cavity.

7. The high-speed micro-sealing rotor with magnet as described in claim 1, characterized in that, The assembly cavity is cylindrical, and a central hole corresponding to the inner hole of the assembly cavity is provided in the middle of the locking sleeve.

8. The high-speed micro-sealing rotor with magnet as described in claim 1, characterized in that, The top cover is made of rubber.

Images