High-capacity high-rotating-speed centrifugal machine rotating head anti-loosening device

Abstract

The utility model belongs to the technical field of centrifugal machines, and discloses a high-capacity high-rotating-speed centrifugal machine rotating head anti-loosening device which comprises a rotating head base, a connecting table is arranged in the center of the upper surface of the rotating head base, an anti-loosening block is arranged in the connecting table, and the upper end of the rotating head base is in threaded connection with an upper cover through the connecting table. According to the high-capacity high-rotating-speed centrifugal machine rotating head anti-loosening device, when a centrifugal machine is used, the upper cover is screwed out of the upper end of the rotating head base, then the anti-loosening block is placed in the connecting table, the upper cover is screwed out of the upper end of the rotating head base, the anti-loosening block is screwed out of the connecting table, and the outer expansion pieces are integrally arranged at the lower end of the anti-loosening block, and the limiting boss is arranged at the lower end of the interior of the connecting table. After placement is completed, the upper cover is fixed to the upper end of the rotary head base again, a motor output shaft of the centrifugal machine is inserted into the connecting table and is in threaded connection with the interior of the connecting table, and the output shaft continuously moves downwards in the connecting process, so that the external expansion piece is ejected outwards, and the motor and the rotary head base are clamped with each other; therefore, the anti-loosening effect of the centrifuge rotating head is improved.

Description

Technical Field

[0001] This utility model belongs to the field of centrifuge technology, specifically a rotor anti-loosening device for a large-capacity, high-speed centrifuge. Background Technology

[0002] A centrifuge is a machine that uses centrifugal force to separate the components of a mixture of liquids and solid particles or liquids and liquids. Centrifuges are mainly used to separate solid particles from liquids in suspensions, or to separate two immiscible liquids of different densities in emulsions (e.g., separating cream from milk); they can also be used to remove liquid from wet solids, such as in a washing machine to spin-dry wet clothes; special high-speed tubular centrifuges can also separate gas mixtures of different densities; utilizing the different settling velocities of solid particles of different densities or sizes in liquids, some sedimentation centrifuges can also classify solid particles according to density or size. The rotor is the core component of a centrifuge, and its performance directly affects the separation effect and safety. With technological advancements, centrifuges are developing towards larger capacities and higher speeds, which places higher demands on rotor anti-loosening devices: Greater centrifugal force: Larger capacities and higher speeds generate greater centrifugal force, increasing the risk of rotor loosening. More complex stress: Under high-speed rotation, the rotor is subjected to complex stresses, which may lead to fatigue failure. Higher safety requirements: Rotor loosening can cause serious accidents, therefore, anti-loosening devices must be highly reliable.

[0003] Limitations of Existing Anti-Loosening Devices: Traditional anti-loosening devices, such as threaded connections and lock nuts, have the following problems: Difficulty in controlling preload: Precise control of preload is difficult, potentially leading to loosening or overtightening. Susceptibility to vibration: Vibration under high-speed rotation can cause loosening. Inconvenient maintenance: Traditional devices are complex to disassemble and assemble, resulting in high maintenance costs.

[0004] To address the aforementioned issues, a rotor anti-loosening device for large-capacity, high-speed centrifuges is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a rotor anti-loosening device for a large-capacity, high-speed centrifuge in order to solve the above problems. The device includes a rotor base, a connecting platform is provided at the center of the upper surface of the rotor base, an anti-loosening block is provided inside the connecting platform, an upper cover is threadedly connected to the upper end of the rotor base through the connecting platform, and multiple outward expansion pieces are integrally provided at the lower end of the anti-loosening block.

[0006] With the above technical solution, when using the centrifuge, first unscrew the top cover from the top of the rotor base, then place the anti-loosening block inside the connecting platform. After placement, re-fix the top cover to the top of the rotor base, insert the centrifuge motor output shaft into the connecting platform, and connect it with the internal thread of the connecting platform. During the connection process, the output shaft moves downward continuously, thereby pushing the outer expansion plate outward, so that the motor and the rotor base are locked together, thereby improving the anti-loosening effect of the centrifuge rotor.

[0007] In a preferred embodiment, a connecting block is provided in the middle of the upper cover, the inner wall of the connecting block is provided with an internal thread, and the outer wall of the connecting platform is provided with an external thread that matches the internal thread.

[0008] The above technical solution allows for easy installation and disassembly of the top cover and the connecting base via a threaded connection, enabling rapid maintenance.

[0009] In a preferred embodiment, a limiting boss is provided at the lower end of the inner side of the connecting platform.

[0010] In a preferred embodiment, the upper end of the connecting block is provided with an anti-slip edge.

[0011] The above technical solution facilitates the rotation of the connecting block by setting an anti-slip edge at the upper end of the connecting block.

[0012] In a preferred embodiment, the upper end of the inner wall of the connecting platform is provided with an internal thread.

[0013] The above technical solution facilitates the connection between the connecting platform and the motor through the internal thread.

[0014] In a preferred embodiment, the outer expansion piece gradually tilts inward from top to bottom.

[0015] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are: this utility model proposes a device for preventing loosening of the rotor of a large-capacity, high-speed centrifuge.

[0016] When using the centrifuge, first unscrew the top cover from the top of the rotor base, then place the anti-loosening block inside the connecting platform. After placement, re-fix the top cover to the top of the rotor base, insert the centrifuge motor output shaft into the connecting platform, and connect it with the internal thread of the connecting platform. During the connection process, the output shaft moves downward continuously, thereby pushing the outer expansion plate outward, so that the motor and the rotor base are locked together, thereby improving the anti-loosening effect of the centrifuge rotor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2This is a schematic diagram of the anti-loosening block in this utility model;

[0019] Figure 3 This is a cross-sectional view of the base of the rotary head in this utility model.

[0020] Markings in the diagram: 1- Rotary head base; 2- Connecting platform; 3- Anti-loosening block; 4- Top cover; 5- Connecting block; 6- Outer expansion piece; 7- Limiting boss; 8- Anti-slip edge. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] The following will combine Figure 1-3 A detailed description is provided of a rotor anti-loosening device for a large-capacity, high-speed centrifuge according to an embodiment of this utility model.

[0023] Example:

[0024] A rotor anti-loosening device for a large-capacity, high-speed centrifuge includes a rotor base 1, a connecting platform 2 is provided at the center of the upper surface of the rotor base 1, a connecting block 5 is provided in the middle of the upper cover 4, the inner wall of the connecting block 5 is provided with an internal thread, and the outer wall of the connecting platform 2 is provided with an external thread that matches the internal thread. The upper cover 4 and the connecting base 1 are connected by threads, which facilitates installation and disassembly and achieves the effect of quick maintenance. The upper end of the connecting block 5 is provided with an anti-slip edge 8, which facilitates the rotation of the connecting block 5.

[0025] The connecting platform 2 is equipped with an anti-loosening block 3 inside. The upper end of the inner wall of the connecting platform 2 is provided with an internal thread, which facilitates the connection between the connecting platform 2 and the motor. The upper end of the rotor base 1 is connected to the upper cover 4 through the connecting platform 2. The lower end of the anti-loosening block 3 is provided with multiple outward expansion pieces 6. The outward expansion pieces 6 gradually tilt inward from top to bottom. The lower end of the connecting platform 2 is provided with a limiting boss 7. The motor output shaft of the centrifuge is inserted into the connecting platform 2 and connected to the internal thread of the connecting platform 2. During the connection process, the output shaft moves downward continuously, thereby pushing the outward expansion pieces 6 outward, so that the motor and the rotor base 1 are locked together, thereby improving the anti-loosening effect of the centrifuge rotor.

[0026] Working principle:

[0027] When using the centrifuge, first unscrew the top cover 4 from the top of the rotor base 1, then place the anti-loosening block 3 inside the connecting platform 2. After placement, re-fix the top cover 4 to the top of the rotor base 1, insert the centrifuge motor output shaft into the connecting platform 2, and connect it with the internal thread of the connecting platform 2. During the connection process, the output shaft moves downward continuously, thereby pushing the outer expansion piece 6 outward, so that the motor and the rotor base 1 are locked together, thereby improving the anti-loosening effect of the centrifuge rotor.

[0028] 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 the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A rotor anti-loosening device for a large-capacity, high-speed centrifuge, characterized in that: The utility model provides a rotator base (1) is provided with the connecting table (2) in the center of upper surface, the inside of connecting table (2) is provided with the anti-loosening block (3), the upper end of rotator base (1) is connected with the upper cover (4) through connecting table (2), the lower end of anti-loosening block (3) is integrally provided with a plurality of outward expansion pieces (6).

2. A large capacity high speed centrifuge head anti-loosening device according to claim 1, characterized in that: The middle part of the upper cover (4) is provided with a connecting block (5), the inner wall of the connecting block (5) is provided with internal threads, and the outer wall of the connecting table (2) is provided with external threads matched with the internal threads.

3. A large capacity high speed centrifuge head anti-loosening device according to claim 1, characterized in that: The lower end of the connecting table (2) is provided with the limiting boss (7).

4. A large capacity high speed centrifuge head anti-loosening device according to claim 1, characterized in that: The upper end of the connecting block (5) is provided with an anti-skid edge (8).

5. A large capacity high speed centrifuge head anti-loosening device as claimed in claim 1, characterized in that: The inner wall of the connecting table (2) is provided with internal threads at the upper end.

6. A large capacity high speed centrifuge head anti-loosening device as claimed in claim 1, characterized in that: The outward expansion pieces (6) gradually incline inward from top to bottom.

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