Energy-saving and noise-reducing centrifugal machine horizontal rotor

Abstract

The invention discloses an energy-saving and noise-reducing centrifugal machine horizontal rotor which comprises a driving part used for providing a rotating power source; the rotor hub is connected with the driving part to realize centrifugal rotation; the cradle is rotationally arranged on the rotor hub and used for bearing test tubes; the fairing is arranged on the rotor hub and is combined with the cradle to form a disc-shaped structure so as to reduce aerodynamic noise caused by airflow disturbance; a balance weight adjusting mechanism is arranged in the fairing, and structural radiation noise caused by vibration during rotation is reduced by controlling the balance weight adjusting mechanism. The balance weight adjusting mechanism comprises a balance weight block, a sliding supporting assembly in sliding fit with the balance weight block and a driving assembly for driving the balance weight block to move along the sliding supporting assembly, and the position of the balance weight block on the sliding supporting assembly is changed through the driving assembly. According to the centrifugal machine, energy loss during operation of the centrifugal machine is reduced, aerodynamic noise caused by aerodynamic factors is weakened, generation of structural radiation noise is restrained, and the overall noise level is obviously lowered.

Description

Technical Field

[0001] The invention belongs to the field of centrifugal equipment, and in particular relates to an energy-saving and noise-reducing centrifuge horizontal rotor. Background Art

[0002] In the current field of centrifuge technology, the rotors of centrifuges can be divided into horizontal rotors and angle rotors according to their different structural forms. The test tubes of the angle rotors are fixed at a specific angle. After rotation, the separated substances will be deposited on one side of the tube and produce a wall effect, which affects the separation effect. The reagents of the horizontal rotor are placed in the hanging basket of the rotor and can be deflected to a horizontal state under the action of centrifugal force during rotation, so that the separated substances are concentrated at the bottom of the test tube, which is conducive to layered removal from the centrifuge tube. Although the horizontal rotor centrifuge has shown certain advantages in separation efficiency, some of its design defects, especially those related to noise generation, still pose a considerable challenge to its practicality and operating experience.

[0003] Specifically, a major defect of the existing horizontal rotor centrifuge is the design of its hanging basket structure. In order to ensure that the reagent can be smoothly deflected to a horizontal state during the rotation process, the hanging basket is usually designed to have a large opening angle. Although this design improves the separation efficiency to a certain extent, it also brings a problem that cannot be ignored: during high-speed rotation, the large-angle opening of the hanging basket will cause severe disturbance of the surrounding air. This disturbance not only increases the energy consumption of the centrifuge during operation and reduces the overall energy efficiency ratio, but more seriously, it will produce high-intensity aerodynamic noise. The generation of aerodynamic noise not only makes the centrifuge make a harsh sound when working, but also seriously affects the working environment of the operator and reduces the comfort and satisfaction of the work. Working in a high-noise environment for a long time may also cause irreversible damage to the hearing health of the operator and increase the risk of occupational diseases. In addition, high-intensity noise may also interfere with other precision instruments in the laboratory or workplace, affecting the overall scientific research or production efficiency.

[0004] Therefore, the shortcomings of existing horizontal rotor centrifuges in noise control have become an important factor restricting their further promotion and application. In order to solve this problem, the development of a new horizontal rotor centrifuge that can maintain high separation performance and effectively reduce noise has become an urgent need in the current centrifuge technology field. Summary of the invention

[0005] In view of the problems of high energy consumption and poor noise control in the existing centrifuge technology, the present invention innovatively proposes an energy-saving and noise-reducing centrifuge horizontal rotor.

[0006] The core of this solution is to significantly reduce the disturbance effect of the rotor on the surrounding air during high-speed rotation by optimizing and improving the shape of the cradle structure and combining it with the strategy of cleverly arranging fairings between the cradles. This series of improvement measures not only effectively reduces the energy loss of the centrifuge during operation and improves the energy saving effect, but also greatly weakens the noise caused by aerodynamic factors, making the overall noise level of the centrifuge significantly reduced.

[0007] In order to realize the above scheme, the present invention discloses an energy-saving and noise-reducing centrifuge horizontal rotor, comprising: a driving part, used to provide a rotational force source; a rotor hub, connected to the driving part, to realize centrifugal rotation; a cradle, rotatably arranged on the rotor hub, used to carry test tubes; a fairing, arranged on the rotor hub, combined with the cradle to form a disc-shaped structure to reduce aerodynamic noise caused by airflow disturbance; a counterweight adjustment mechanism is arranged in the fairing, and the counterweight adjustment mechanism is controlled to reduce the structural radiation noise caused by vibration during rotation.

[0008] As a further improvement of the above technical solution:

[0009] The counterweight adjustment mechanism includes a counterweight block, a sliding support assembly that slides with the counterweight block, and a driving assembly that drives the counterweight block to move along the sliding support assembly. The position of the counterweight block on the sliding support assembly is changed by the driving assembly.

[0010] The rotor hub comprises a central block and a mounting structure arranged around the central block, gaps for accommodating a cradle are arranged between adjacent mounting structures, and the fairing is fixed on the mounting structure.

[0011] An electronic equipment compartment is arranged on the upper part of the central block.

[0012] The fairing comprises a bottom shell and a top cover, and the counterweight adjustment mechanism is arranged on the bottom shell.

[0013] The sliding support assembly includes a fixed block and a guide rod arranged on the fixed block, the counterweight block is slidably matched with the guide rod, a mounting platform is arranged on one side of the fixed block, a lead screw and an adjusting motor connected to the lead screw are arranged on the mounting platform, and a screw sleeve matched with the lead screw thread is arranged at the bottom of the counterweight block.

[0014] The cradle comprises a hanging basket body for accommodating test tubes, rotating pins are arranged on both sides of the hanging basket body, positioning grooves for accommodating the rotating pins are arranged on both sides of the mounting structure, and pressing blocks are arranged on the positioning grooves.

[0015] The cradle and the fairing have the same height.

[0016] A two-axis torque sensor is arranged at the bottom of the central block.

[0017] A control circuit board is arranged between the central block and the electronic equipment compartment. The control circuit board is connected to the two-axis torque sensor and the regulating motor, processes the data of the two-axis torque sensor, obtains the unbalance point, and provides an adjustment method to drive the regulating motor to rotate, change the position of the counterweight block, eliminate the unbalance point, make the rotation process in a balanced state, and avoid vibration during rotation to generate structural radiation noise.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention uses a fairing to fill the gaps between the test tubes, which reduces the disturbance of the rotor to the air during the rotation of the rotor, thereby reducing air resistance and effectively suppressing the generation of aerodynamic noise, reducing noise pollution, and providing a better working environment for workers, which helps protect hearing and ensure work comfort. Compared with the prior art, the present invention reduces energy loss and improves efficiency.

[0020] The present invention adds a plurality of adjustable counterweight adjustment mechanisms and a two-axis torque sensor device. The two-axis torque sensor can help the staff to ensure the balance of the centrifuge rotor by adjusting the position of the counterweight block when the reagent is unevenly distributed, reduce the vibration and noise during the operation of the equipment, ensure the strength and speed of the rotor, and improve the service life of the equipment.

[0021] The present invention adopts a combination of a fairing and a configuration adjustment mechanism, which effectively reduces the generation of overall noise, while reducing operating resistance, improving efficiency, and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the test tube of the present invention when it is installed;

[0023] Figure 2 It is a schematic diagram of the structure of the test tube of the present invention when it is centrifugally rotated;

[0024] Figure 3 It is a schematic diagram of the structure of the present invention without the top cover;

[0025] Figure 4 It is a schematic diagram of the overall explosion structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the cradle of the present invention;

[0027] Figure 6 It is a structural schematic diagram of the counterweight adjustment mechanism of the present invention.

[0028] : 100, rotor hub; 101, center block; 102, mounting structure; 103, electronic equipment compartment; 104, two-axis torque sensor; 105, control circuit board; 200, fairing; 201, bottom shell; 202, top cover; 210, counterweight adjustment mechanism; 211, fixed block; 212, mounting table; 213, adjustment motor; 214, lead screw; 215, guide rod; 216, screw sleeve; 217, counterweight; 300, cradle; 301, hanging basket body; 302, test tube; 303, rotating pin; 304, pressure block; 400, driving unit. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figures 1 to 3As shown, the energy-saving and noise-reducing centrifuge horizontal rotor of this embodiment includes: a driving part 400, which is used to provide a rotational force source; a rotor hub 100, which is connected to the driving part 400 to realize centrifugal rotation; a cradle 300, which is rotatably arranged on the rotor hub 100 and is used to carry a test tube 302; a fairing 200, which is arranged on the rotor hub 100 and is combined with the cradle 300 to form a disc-shaped structure to reduce aerodynamic noise caused by airflow disturbance; a counterweight adjustment mechanism 210 is arranged in the fairing 200, and the counterweight adjustment mechanism 210 is controlled to reduce the structural radiation noise caused by vibration during rotation. The fairing 200 fills the gap during the rotation of the cradle 300 to reduce noise interference. After filling, the entire disc-shaped structure can reduce the influence of air resistance and effectively reduce aerodynamic noise. Under different test tube loading environments, the rotor center of gravity is adjusted by adjusting the configuration adjustment mechanism 210 to reduce vibration and effectively reduce structural radiation noise.

[0034] like Figure 4 As shown, the rotor hub 100 includes a center block 101 and a mounting structure 102 arranged around the center block 101, a notch for accommodating the cradle 300 is provided between adjacent mounting structures 102, and the fairing 200 is fixed on the mounting structure 102. An electronic equipment compartment 103 is provided on the upper part of the center block 101. The fairing 200 includes a bottom shell 201 and a top cover 202, and a counterweight adjustment mechanism 210 is provided on the bottom shell 201. A two-axis torque sensor 104 is provided at the bottom of the center block 101. A control circuit board 105 is provided between the center block 101 and the electronic equipment compartment 103. The rotor hub 100 is axially symmetrical in appearance, which can minimize air disturbance. The electronic equipment compartment 103 can accommodate batteries to provide kinetic energy to the motors of the present invention, and can also serve as a shell to provide protection for the internal control circuit board 105. The control circuit board 105 is used to control the motor speed and direction and thus the centrifugal speed, and control the counterweight adjustment mechanism 210 to adjust the dynamic balance characteristics of the rotor and thereby reduce the vibration and noise level caused by the equipment.

[0035] The thickness of the cradle 300 and the fairing 200 is the same, and the design here is to form a flat disc structure when rotating, which can effectively reduce the impact of air disturbance on the rotor, reduce air resistance and noise generated during rotation. The two-axis torque sensor can automatically measure the loading state of the rotor during rotation, and can use the loading state as a reference for the adjustment amount of the controller, which is convenient for experimenters to debug the device and observe whether the device is adjusted correctly.

[0036] like Figure 5As shown, the cradle 300 includes a hanging basket body 301 for accommodating a test tube 302. Rotation pins 303 are arranged on both sides of the hanging basket body 301. Positioning grooves for accommodating the rotation pins 303 are arranged on both sides of the mounting structure 102. The positioning grooves are provided with pressure blocks 304. The hanging basket body 301 is suspended at the notch. As the rotation speed increases, it rotates to a position parallel to the fairing 200, that is, Figure 1 The structure shown.

[0037] like Figure 6 As shown, the counterweight adjustment mechanism 210 includes a counterweight block 217, a sliding support assembly that slides with the counterweight block 217, and a driving assembly that drives the counterweight block 217 to move along the sliding support assembly, and the position of the counterweight block 217 on the sliding support assembly is changed by the driving assembly. The sliding support assembly here can use a slide rail or a guide rod structure, and the driving assembly can use a screw mechanism or other linear motion mechanism. Since it is inconvenient to lay cables here, transmission methods such as pneumatic and hydraulic pressure are not used.

[0038] The sliding support assembly includes a fixed block 211 and a guide rod 215 arranged on the fixed block 211, and the counterweight block 217 is slidably matched with the guide rod 215. A mounting platform 212 is arranged on one side of the fixed block 211, and a lead screw 214 and an adjusting motor 213 connected to the lead screw 214 are arranged on the mounting platform 212. A screw sleeve 216 threadedly matched with the lead screw 214 is arranged at the bottom of the counterweight block 217.

[0039] The energy-saving and noise-reducing centrifuge horizontal rotor of the present invention is mainly applicable to the following key areas, showing its significant advantages in improving the performance of medical equipment, optimizing the working environment and promoting environmental protection and energy saving:

[0040] 1. Clinical testing: In the hospital's laboratory, blood center and biological laboratory, the centrifuge is an indispensable device for separating biological samples such as blood, urine, serum and plasma. The horizontal rotor of the present invention can effectively improve the sample separation efficiency, reduce noise interference, and provide a more comfortable operating environment for medical staff through optimized design and energy-saving and noise reduction technology.

[0041] 2. Biological science research: In scientific research activities in the fields of molecular biology, cell biology, genetics, etc., centrifuges are used for cell separation, DNA / RNA extraction and other steps. The application of the present invention can significantly improve the experimental accuracy and repeatability, while reducing the overall noise level of the laboratory.

[0042] 3. Cell culture processing: In the biopharmaceutical process, the centrifuge is used to separate impurities and cell fragments in the cell culture medium. The energy-saving and noise-reducing rotor of the present invention can ensure the purity and activity of the cell products while reducing energy consumption.

[0043] 4. Vaccine preparation: A large amount of biological materials need to be centrifuged during vaccine production. The application of the present invention not only improves production efficiency, but also reduces the impact of noise on the production environment, thereby ensuring the quality and safety of the vaccine.

[0044] 5. Water sample analysis: In water quality monitoring, the centrifuge is used to separate suspended matter and microorganisms in water. The energy-saving and noise-reducing characteristics of the present invention make long-term operation possible, thereby improving the accuracy and timeliness of monitoring data.

[0045] 6. Food testing: In food safety testing, centrifuges are often used to separate additives, residues, etc. in food. The application of the present invention helps to improve the testing efficiency, while reducing laboratory noise and protecting the hearing of staff.

[0046] 7. Teaching demonstration: In biology, chemistry and other courses in colleges and scientific research institutions, centrifuges are commonly used teaching tools. The energy-saving and noise-reducing design of the present invention makes teaching demonstration more intuitive and does not affect the classroom environment.

[0047] 8. Scientific research projects: Provide efficient and low-noise centrifugal separation solutions for various scientific research projects to promote the rapid transformation of scientific research results.

[0048] like Figures 1 to 6 As shown, the rotor hub 100 is the main rotating body for generating centrifugal force. The centrifugal force generated by the rotation of the rotor hub 100 is used to separate biological samples such as blood, urine, serum, plasma, etc. loaded in the cradle test tube. Multiple cradles 300 are installed on the rotor hub 100. The rotor hub 100 can be installed and accommodated with 6 cradles 300 with reagents to be centrifuged at one time. The rotor hub 100 includes: a battery cover placed directly above the battery for protecting the battery and fixing the position, a battery pack composed of 3 identical batteries connected in series and installed in an electronic equipment compartment 103, the electronic equipment compartment 103 is used to fix the battery and provide the function of connecting the power supply, and is placed in the center of the central block 101, and the control circuit board 105 has a through hole for fixing and is placed between the central block 101 and the electronic equipment compartment 103 to form an axially symmetrical shape that can be used for power supply and signal transmission. Under the central block 101, it is composed of a two-axis torque sensor 104 and an adapter. The adapter is made of titanium alloy material, which has greater fixing strength and safer instrument. The two-axis torque sensor 104 can reflect the center of gravity position of the horizontal rotor, which can be conveniently used to provide an adapter function with the drive unit 400.

[0049] The maximum rotation angle of the cradle 300 is fixed at 90 degrees, which can prevent the liquid in the test tube from splashing out and ensure that the separation occurs fully. Six fairings 200 made of titanium alloy are installed around the rotor hub 100. A counterweight adjustment mechanism 210 is installed inside the fairing 200 to help adjust the center of gravity.

[0050] The fairing 200 is a key component in the device, designed to reduce the air resistance generated during the rotation process. The main body of the fairing 200 is composed of a bottom shell 201 and a top cover 202, and a counterweight adjustment mechanism 210 is provided inside. By adjusting the relative position of the counterweight block 217, the balance can be maintained during the operation of the rotor, thereby avoiding unnecessary vibration and noise. According to the weight of the sample distribution detected by the two-axis force sensor 104, the counterweight block 217 inside the fairing 200 is adjusted to ensure that the rotor maintains a balanced state during high-speed rotation and avoid vibration caused by uneven distribution of samples. The streamlined design of the fairing 200 effectively suppresses the generation of aerodynamic noise while reducing air disturbance, greatly improving the comfort of the operating environment.

[0051] The main function of the hanging basket body 301 is to fix and hold the test tube 302 for centrifugal separation. The design of the hanging basket body 301 has been aerodynamically optimized and adopts a large-angle opening design, so that the test tube 302 can be naturally horizontally unfolded when rotating, thereby ensuring that the sample is evenly deposited at the bottom of the test tube. The operator puts the sample to be processed into the test tube 302 and fixes it in the hanging basket body 301. Ensure that all test tubes are evenly distributed, and use the pressing block 304 to ensure that the hanging basket body 301 is firm and does not fall off.

[0052] The cradle 300 is placed between the gaps of the fairing 200 and the tail of the cradle 300 is raised during rotation to facilitate separation.

[0053] The driving unit 400 adopts a driving motor of model JH37X-545. When the centrifuge is working, its rotor gradually reaches the required speed under the drive motor. The present invention sets the optimal speed range of the centrifuge to 5000 to 8000 rpm. Within this range, the synergy of the hanging basket structure and the fairing design can maximize the centrifugal efficiency. After the speed reaches a predetermined value, the hanging basket body 301 is unfolded under the action of centrifugal force, and the plasma sample begins to separate. The effect of the fairing 200 is particularly obvious at this stage. It reduces air resistance and enables the centrifuge to achieve efficient separation at relatively low energy consumption. During the rotation process, the different components in the plasma sample are deposited at the bottom of the test tube under the action of centrifugal force. Due to the optimized design of the cradle 300, the separation process is stable and fast, and the noise is also effectively controlled below 60 decibels to ensure that the operating environment of the experimenter will not be affected.

[0054] When the separation of components is completed, take out the test tube containing the plasma reagent. When the plasma reagent in the test tube is extracted, it should be observed that the high-density white blood cell and platelet tissue is separated into the brown-yellow layer of erythrocyte sedimentation. Once it is separated, the experiment is completed.

[0055] The above is only an embodiment of the present invention, and the common sense such as the known specific structure and characteristics in the scheme is not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A centrifuge horizontal rotor with energy saving and noise reduction, characterized in that: include: A driving unit (400), used to provide a rotational force source; The rotor hub (100) is connected to the driving part (400) to achieve centrifugal rotation; A cradle (300) is rotatably disposed on the rotor hub (100) and is used to carry a test tube (302); A fairing (200) is arranged on a rotor hub (100) and is combined with a cradle (300) to form a disc-shaped structure to reduce aerodynamic noise caused by airflow disturbance; a counterweight adjustment mechanism (210) is arranged in the fairing (200) to reduce structural radiation noise caused by vibration during rotation by controlling the counterweight adjustment mechanism (210).

2. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 1, characterized in that: The counterweight adjustment mechanism (210) comprises a counterweight block (217), a sliding support assembly slidably matched with the counterweight block (217), and a driving assembly driving the counterweight block (217) to move along the sliding support assembly, and the position of the counterweight block (217) on the sliding support assembly is changed by the driving assembly.

3. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 1 or 2, characterized in that: The rotor hub (100) comprises a central block (101) and a mounting structure (102) arranged around the central block (101), and gaps for accommodating a cradle (300) are provided between adjacent mounting structures (102), and the fairing (200) is fixed on the mounting structure (102).

4. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 3 is characterized in that: An electronic equipment compartment (103) is arranged on the upper part of the central block (101).

5. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 1, characterized in that: The fairing (200) comprises a bottom shell (201) and a top cover (202), and the counterweight adjustment mechanism (210) is arranged on the bottom shell (201).

6. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 3, characterized in that: The sliding support assembly comprises a fixed block (211) and a guide rod (215) arranged on the fixed block (211); the counterweight block (217) is slidably matched with the guide rod (215); a mounting platform (212) is arranged on one side of the fixed block (211); a lead screw (214) and an adjusting motor (213) connected to the lead screw (214) are arranged on the mounting platform (212); and a screw sleeve (216) threadedly matched with the lead screw (214) is arranged at the bottom of the counterweight block (217).

7. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 3, characterized in that: The cradle (300) comprises a hanging basket body (301) for accommodating a test tube (302), rotating pins (303) are arranged on both sides of the hanging basket body (301), positioning grooves for accommodating the rotating pins (303) are arranged on both sides of the mounting structure (102), and pressing blocks (304) are arranged on the positioning grooves.

8. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 1, characterized in that: The cradle (300) and the fairing (200) have the same thickness.

9. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 3, characterized in that: A two-axis torque sensor (104) is arranged at the bottom of the central block (101).

10. The energy-saving and noise-reducing centrifuge horizontal rotor according to claim 9, characterized in that: A control circuit board (105) is arranged between the central block (101) and the electronic equipment compartment (103).

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