A feeding device for a centrifuge

Abstract

This utility model discloses a feeding device for a centrifuge, belonging to the field of centrifuge technology. It includes a centrifuge housing, with an angular rotor rotatably connected inside the housing. The top of the angular rotor has several centrifuge holes arranged in a circular array. Each centrifuge hole has a support assembly inside, including a limiting groove formed on the inner wall of the centrifuge hole. A limiting slider is slidably connected inside the limiting groove, and a semi-circular groove is formed at the upper end of the limiting slider. This utility model utilizes a helical spring to effectively cushion the bottom of the centrifuge tube when it is placed inside the centrifuge hole. The semi-circular groove further conforms to the bottom of the centrifuge tube, preventing it from shaking during centrifugation and improving its safety. The through-hole increases the adaptability of the centrifuge hole to pointed-bottom centrifuge tubes, preventing damage during centrifugation.

Description

Technical Field

[0001] This utility model belongs to the field of centrifuge technology, specifically relating to a feeding device for a centrifuge. Background Technology

[0002] Laboratory centrifuges are key devices that use high-speed rotation to generate powerful centrifugal force, enabling the separation of components of different densities in a mixture. Their core structure includes a replaceable rotor adaptable to different sizes of centrifuge tubes, and a control system that precisely adjusts the rotation speed and centrifugation time. During operation, centrifugal force causes samples within the centrifuge tubes to rapidly separate or precipitate according to density differences. They are widely used in biological sample separation, chemical purification, and medical testing. Strict balance of the centrifuge tubes must be maintained during operation to avoid violent vibrations, making them a fundamental tool for component separation and purification in laboratories.

[0003] The typical working process of a centrifuge is as follows: the user places the centrifuge tube containing the experimental sample into the centrifuge port, confirms that the centrifuge tube is in place, sets the required centrifugation speed and time, closes the centrifuge lid, and after the centrifuge is started, the rotor drives the centrifuge tube in the centrifuge port to rotate at high speed. The centrifugal force generated by the rotation is used to separate the components of different densities in the sample. After centrifugation, the rotor gradually decelerates until it stops, and the user opens the lid to remove the centrifuge tube.

[0004] However, existing centrifuges lack an effective buffer structure inside the centrifuge holes. When centrifuge tubes are placed into the centrifuge holes, their bottoms will directly and rigidly contact the bottom of the centrifuge holes. If the force is not properly controlled during placement, it is easy to cause impact to the bottom of the centrifuge tubes. Long-term use may lead to hidden damage to the centrifuge tubes. Utility Model Content

[0005] The purpose of this invention is to provide a feeding device for a centrifuge to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a feeding device for a centrifuge, comprising a centrifuge housing, an angular rotor rotatably connected inside the centrifuge housing, a plurality of centrifuge holes arranged in a circular array on the top of the angular rotor, a support assembly provided inside each centrifuge hole, the support assembly including a limiting groove formed on the inner wall of the centrifuge hole, a limiting slider slidably connected inside the limiting groove, a semi-circular groove formed at the upper end of the limiting slider, a through hole formed at the bottom of the semi-circular groove, a helical spring fixedly connected outside the through hole and at the bottom of the limiting slider, the bottom of the helical spring being fixedly connected to the bottom of the centrifuge hole.

[0007] In a preferred embodiment, a positioning hole is provided in the center of the angular rotor, a limiting groove is provided on the inner wall of the positioning hole, and a through hole is provided at the top of the positioning hole.

[0008] In a preferred embodiment, a centrifuge motor is fixedly installed inside the centrifuge housing, a positioning pin is fixedly connected to the upper end of the centrifuge motor drive shaft, a limit block is fixedly connected to the side surface of the positioning pin, and a threaded hole is provided on the top of the positioning pin.

[0009] In a preferred embodiment, the locating pin is adapted to the shape of the locating hole, the limiting block is adapted to the shape of the limiting groove, a bolt passes through the through hole, and the bolt is threadedly connected to the locating pin through a threaded hole.

[0010] In a preferred embodiment, a threaded post is fixedly connected to the top center of the angular rotor and outside the through hole, and a sealing strip is fixedly connected to the top outside of the angular rotor.

[0011] In a preferred embodiment, the top of the angular rotor is threadedly connected to a rotor cover via a threaded post, the bottom of the rotor cover is provided with an adapter groove for the sealing strip, and the top of the rotor cover is fixedly connected to a handle.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes a helical spring to effectively cushion the bottom of the centrifuge tube when it is placed inside the centrifuge hole. The semi-circular groove fits snugly against the bottom of the centrifuge tube, preventing it from shaking during centrifugation and improving its safety. The through hole increases the adaptability of the centrifuge hole to pointed-bottom centrifuge tubes, preventing damage to them during centrifugation.

[0014] In this invention, the cooperation of the positioning pin and positioning hole, and the limiting block and limiting groove, achieves precise positioning of the angle rotor, ensuring its coaxiality with the motor drive shaft and reducing vibration during centrifugation; the bolt connection further enhances the firmness of the angle rotor installation, preventing it from falling off during high-speed rotation and improving the safety of equipment operation; the detachable connection method facilitates the maintenance and replacement of the angle rotor. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the centrifuge housing of this utility model;

[0017] Figure 3 This is an exploded three-dimensional structural diagram of the angular rotor component of this utility model;

[0018] Figure 4 This is an exploded two-dimensional structural diagram of the angular rotor component of this utility model;

[0019] Figure 5 This is a schematic diagram of the planar structure of the angular rotor component of this utility model.

[0020] In the diagram: 1. Centrifuge housing; 2. Angle rotor; 3. Centrifuge hole; 4. Threaded post; 5. Sealing strip; 6. Rotor cover; 7. Adapter groove; 8. Handle; 201. Positioning hole; 202. Limiting groove; 203. Through hole; 204. Centrifuge motor; 205. Positioning pin; 206. Limiting block; 207. Threaded hole; 301. Limiting slide groove; 302. Limiting slider; 303. Semicircular groove; 304. Through hole; 305. Helical spring. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0023] Please see Figure 1-5 This utility model provides a feeding device for a centrifuge, including a centrifuge housing 1. An angle rotor 2 is rotatably connected inside the centrifuge housing 1. Several centrifuge holes 3 are arranged in a ring array on the top of the angle rotor 2. Each centrifuge hole 3 is provided with a support component. The support component includes a limiting groove 301 opened in the inner wall of the centrifuge hole 3. A limiting slider 302 is slidably connected inside the limiting groove 301. A semi-circular groove 303 is opened at the upper end of the limiting slider 302. A through hole 304 is opened at the bottom of the semi-circular groove 303, penetrating the limiting slider 302. A helical spring 305 is fixedly connected to the outside of the through hole 304 and at the bottom of the limiting slider 302. The bottom of the helical spring 305 is fixedly connected to the bottom of the centrifuge hole 3.

[0024] Inside the centrifuge hole 3, the limiting slider 302 can slide along the limiting groove 301, and the helical spring 305 is located at the bottom of the limiting slider 302 and connected to the bottom of the centrifuge hole 3. When a centrifuge tube is inserted, the centrifuge tube squeezes the limiting slider 302, causing it to slide downwards and compress the helical spring 305. The elastic force of the helical spring 305 reacts to the limiting slider 302, and the semi-circular groove 303 fits against the outer wall of the centrifuge tube for fixation. The through hole 304 increases the adaptability of the centrifuge hole 3 to the pointed-bottom centrifuge tube, preventing damage to the pointed-bottom centrifuge tube during centrifugation. In this invention, the helical spring 305 effectively buffers the bottom of the centrifuge tube when it is inserted into the centrifuge hole 3, and the semi-circular groove 303 fits against the bottom of the centrifuge tube, preventing the centrifuge tube from shaking during centrifugation and improving the safety of the centrifuge tube. The through hole 304 increases the adaptability of the centrifuge hole 3 to the pointed-bottom centrifuge tube, preventing damage to the pointed-bottom centrifuge tube during centrifugation.

[0025] Specifically, such as Figure 3 and Figure 5 As shown, a positioning hole 201 is provided in the middle of the interior of the angle rotor 2, a limiting groove 202 is provided in the inner wall of the positioning hole 201, and a through hole 203 is provided at the top of the positioning hole 201; a centrifuge motor 204 is fixedly installed inside the centrifuge housing 1, a positioning pin 205 is fixedly connected to the upper end of the drive shaft of the centrifuge motor 204, a limiting block 206 is fixedly connected to the side surface of the positioning pin 205, and a threaded hole 207 is provided at the top of the positioning pin 205; the shape of the positioning pin 205 is adapted to the positioning hole 201, the shape of the limiting block 206 is adapted to the limiting groove 202, a bolt passes through the through hole 203, and the bolt is threadedly connected to the positioning pin 205 through the threaded hole 207.

[0026] When installing the angle rotor 2, align the positioning hole 201 with the positioning pin 205, and insert the limiting groove 202 and the limiting block 206 accordingly to achieve initial positioning of the angle rotor 2 and the drive shaft of the centrifuge motor 204. Subsequently, the bolt passes through the through hole 203 and is screwed into the threaded hole 207 to securely connect the angle rotor 2 and the positioning pin 205. Finally, when the centrifuge motor 204 is working, the angle rotor 2 is driven to rotate synchronously through the transmission of the positioning pin 205 and the limiting block 206. In this invention, the cooperation between the positioning pin 205 and the positioning hole 201, and the limiting block 206 and the limiting groove 202, achieves precise positioning of the angle rotor 2, ensuring its coaxiality with the motor drive shaft and reducing vibration during centrifugation. The bolt connection further enhances the firmness of the angle rotor 2 installation, preventing it from falling off during high-speed rotation and improving the safety of equipment operation. The detachable connection method facilitates the maintenance and replacement of the angle rotor 2.

[0027] Specifically, such as Figure 3 and Figure 4As shown, a threaded post 4 is fixedly connected to the top center of the angle rotor 2 and outside the through hole 203, and a sealing strip 5 is fixedly connected to the top outside of the angle rotor 2; a rotor cover 6 is threadedly connected to the top of the angle rotor 2 through the threaded post 4, and an adapter groove 7 for the sealing strip 5 is opened at the bottom of the rotor cover 6, and a handle 8 is fixedly connected to the top of the rotor cover 6.

[0028] When the rotor cover 6 is closed, the rotor cover 6 is fixed to the top of the angle rotor 2 by the threaded engagement of the threaded post 4 and the rotor cover 6. At this time, the sealing strip 5 is embedded in the adapter groove 7 to achieve the sealing of the top of the angle rotor 2. The handle 8 facilitates the taking and putting away of the rotor cover 6.

[0029] Working principle and usage process of this utility model:

[0030] First, the operator aligns the positioning hole 201 of the angle rotor 2 with the positioning pin 205 on the drive shaft of the centrifuge motor 204, so that the limiting groove 202 and the limiting block 206 are inserted to complete the initial positioning. Then, the bolt is passed through the through hole 203 and screwed into the threaded hole 207 to achieve fastening. Next, the centrifuge tube is placed into the centrifuge hole 3, and the limiting slider 302 is pressed down along the limiting groove 301 and the helical spring 305 is compressed. The spring force is used to fix the semi-circular groove 303 against the outer wall of the centrifuge tube. The through hole 304 is adapted to the pointed bottom centrifuge tube. Then, the rotor cover 6 is tightened on the top of the angle rotor 2 through the threaded post 4 using the handle 8, so that the sealing strip 5 is embedded in the matching groove 7 for sealing. Finally, the centrifuge motor 204 is started, and the angle rotor 2 is driven to rotate at high speed through the positioning pin 205 and the limiting block 206 to complete the centrifugation operation.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feeding device for a centrifuge, comprising a centrifuge housing (1), characterized in that: An angular rotor (2) is rotatably connected inside the centrifuge housing (1). Several centrifuge holes (3) are arranged in a ring array on the top of the angular rotor (2). Each centrifuge hole (3) is provided with a support assembly. The support assembly includes a limiting groove (301) opened on the inner wall of the centrifuge hole (3). A limiting slider (302) is slidably connected inside the limiting groove (301). A semi-circular groove (303) is opened at the upper end of the limiting slider (302). A through hole (304) penetrating the limiting slider (302) is opened at the bottom of the semi-circular groove (303). A helical spring (305) is fixedly connected to the outside of the through hole (304) and at the bottom of the limiting slider (302). The bottom of the helical spring (305) is fixedly connected to the bottom of the centrifuge hole (3).

2. The feeding device for a centrifuge according to claim 1, characterized in that: The angular rotor (2) has a positioning hole (201) in the middle, a limiting groove (202) in the inner wall of the positioning hole (201), and a through hole (203) in the top of the positioning hole (201).

3. A feeding device for a centrifuge according to claim 2, characterized in that: A centrifuge motor (204) is fixedly installed inside the centrifuge housing (1). A positioning pin (205) is fixedly connected to the upper end of the centrifuge motor (204) drive shaft. A limit block (206) is fixedly connected to the side surface of the positioning pin (205). A threaded hole (207) is opened on the top of the positioning pin (205).

4. A feeding device for a centrifuge according to claim 3, characterized in that: The locating pin (205) is adapted to the shape of the locating hole (201), the limiting block (206) is adapted to the shape of the limiting groove (202), the through hole (203) is through which a bolt passes, and the bolt is threaded to the locating pin (205) through the threaded hole (207).

5. A feeding device for a centrifuge according to claim 1, characterized in that: A threaded post (4) is fixedly connected to the top center of the angle rotor (2) and outside the through hole (203), and a sealing strip (5) is fixedly connected to the top outside of the angle rotor (2).

6. A feeding device for a centrifuge according to claim 5, characterized in that: The top of the angular rotor (2) is threadedly connected to a rotor cover (6) via a threaded post (4). The bottom of the rotor cover (6) is provided with an adapter groove (7) for the adapter sealing strip (5). The top of the rotor cover (6) is fixedly connected with a handle (8).

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