A protective performance testing device for the risk of damage to centrifuge rotating components

Abstract

This utility model discloses a protective performance testing device for the risk of damage to the rotating components of a centrifuge. The device includes a housing with a door. A splash tracking unit is located around the top perimeter of the housing. An angle measuring unit and a splash collection unit are located at the bottom of the housing. A speed monitoring unit is located on the side wall or top of the housing for alignment with reflective markings on the centrifuge spindle. This utility model integrates the splash tracking unit, angle measuring unit, splash collection unit, and speed monitoring unit within a sealed housing, creating an integrated testing system for the displacement, rotation angle, movement distance, and scattering distance of fragments after damage to the rotating components of a laboratory centrifuge. It can simultaneously perform multiple tests, including explosion protection, fragment scattering distance measurement, and equipment attitude stability assessment, achieving simultaneous measurement of multiple parameters and active safety protection, significantly enhancing the product's safety attributes.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment safety testing technology, specifically to a protective performance testing device for the risk of damage to centrifuge rotating components. Background Technology

[0002] Laboratory centrifuges belong to a subfield of laboratory equipment. They are laboratory devices that achieve separation based on differences in the density of substances, and are mainly used in biomedicine, pharmaceutical industry, chemistry and materials science, environmental monitoring, and food industry. For example: in biomedicine, they are used for separating blood components, extracting DNA / RNA, purifying proteins, and separating cell cultures; in pharmaceuticals, they are used for vaccine preparation, drug purification, and cell debris removal; in chemistry and materials science, they are used for separating nanomaterials, separating colloidal solutions, and collecting sediments; in environmental monitoring, they are used for enriching suspended particles and detecting pollutants in water quality analysis; and in the food industry, they are used for separating fats in dairy products, clarifying fruit juices, and extracting fermentation products.

[0003] The main danger of the aforementioned laboratory centrifuges lies in the risk of displacement and scattering of parts due to damage to the rotating components, resulting in liquid splashing, after installation according to the manufacturer's instructions. Existing IEC61010-2-020:2016 / EN61010-2-020:2017 only specifies the testing equipment for testing rotational speed and the interpretation of test results. Centrifuge safety testing equipment is functionally limited, lacking integrated measurement of dynamic parameters after a centrifuge explosion, such as equipment movement distance, debris splash distance, and angular displacement, as well as the accuracy of test results. Furthermore, the protective enclosure design does not adequately consider the needs of multi-sensor collaboration and real-time data acquisition, as well as the safety requirements of testing personnel.

[0004] There is currently no effective solution to the above problems. Utility Model Content

[0005] In view of the above-mentioned technical problems in related technologies, this utility model proposes a protective performance testing device for the risk of damage to centrifuge rotating components, which can overcome the above-mentioned shortcomings of the prior art.

[0006] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: A protective performance testing device for the risk of damage to the rotating components of a centrifuge includes a chamber, the chamber having a door, a splash tracking unit located around the top of the chamber, an angle measuring unit and a splash collection unit located at the bottom of the chamber, and a speed monitoring unit located on the side wall or top of the chamber for aligning with the reflective markings on the centrifuge spindle. The bottom of the housing is provided with a groove that is lower than the bottom plane. The center of the groove is provided with a hole for placing the splash collection unit. The splash collection unit and the metal filter screen are arranged sequentially from bottom to top outside the hole in the groove. The splash collection unit is fixed to the bottom of the centrifuge through the centrifuge base platform.

[0007] Furthermore, the enclosure has a cubic structure, with an inner layer of 304 stainless steel, a middle layer of energy-absorbing rubber, and an outer layer of transparent polycarbonate observation window.

[0008] Furthermore, the cabinet door is fixed to the cabinet body by an electromagnetic lock.

[0009] Furthermore, the splash tracking unit is a high-speed camera, which is located at the four corners inside the housing, and the top of the housing has built-in LED matrix lighting.

[0010] Furthermore, the angle measuring unit is a gyroscope sensor, which is integrated into the bottom of the centrifuge base platform.

[0011] Furthermore, the pore size of the metal filter is 1.5 mm.

[0012] Furthermore, the splash collection unit is a grid paper with a 1cm scale.

[0013] Furthermore, the rotational speed monitoring unit is a laser velocimeter.

[0014] The beneficial effects of this invention are as follows: By integrating a splash tracking unit, an angle measurement unit, a splash collection unit, and a rotation speed monitoring unit into a sealed enclosure, this invention constructs an integrated testing system for measuring the displacement, rotation angle, movement distance, and scattering distance of fragments after damage to the rotating components of a laboratory centrifuge. This achieves simultaneous measurement of multiple parameters and active safety protection, significantly enhancing the product's safety attributes. The equipment fully meets the requirements of current safety standards for comprehensiveness, accuracy, and safety in testing. It can complete multiple tests in one go, including explosion protection, fragment splash distance measurement, and equipment attitude stability assessment, improving efficiency by 300% compared to traditional separate testing methods. Furthermore, thanks to the innovative design of the enclosure structure, it combines visibility and high-level protection capabilities in the event of a rotor explosion, achieving dual functions of observation and protection, effectively improving the reliability and safety of the testing process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the protective performance testing device for the risk of damage to the centrifuge rotating assembly according to an embodiment of the present invention; Figure 2 This is an internal structural diagram of the centrifuge rotating component damage risk protection performance testing device according to the embodiments of this utility model; Figure 3 This is a structural view of the angle measuring unit, the splash collection unit, and the speed monitoring unit of the centrifuge rotating component damage risk protection performance testing device according to an embodiment of the present utility model. Figure 4 This is an assembly structure view of the angle measuring unit and the splash collection unit of the centrifuge rotating component damage risk protection performance testing device according to the embodiment of this utility model; In the diagram: 1. Chamber; 2. Chamber door; 3. Metal filter screen; 4. Centrifuge base platform; 5. Electromagnetic lock; 6. High-speed camera; 7. LED matrix lighting; 8. Gyroscope sensor; 9. Mesh paper; 10. Laser velocimeter; 11. Hole. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] like Figure 1-4 As shown, a protective performance testing device for the risk of damage to the rotating component of a centrifuge according to an embodiment of the present utility model includes a box 1, the box 1 is provided with a box door 2, a splash tracking unit is provided around the top of the box 1, an angle measuring unit and a splash collection unit are provided at the bottom of the box 1, and a speed monitoring unit for aligning with the reflective mark on the centrifuge spindle is provided on the side wall or top of the box 1. The bottom of the housing 1 is provided with a groove that is lower than the bottom plane. The middle of the groove is provided with a hole 11 for placing the splash collection unit. The groove is provided with a splash collection unit and a metal filter screen 3 from bottom to top outside the hole 11. The splash collection unit is fixed to the bottom of the centrifuge through the centrifuge base platform 4.

[0019] In this embodiment, the housing 1 has a cubic structure, with an inner layer of 304 stainless steel, a middle layer of energy-absorbing rubber, and an outer layer of transparent polycarbonate observation window.

[0020] In this embodiment, the door 2 is fixed to the box body 1 by an electromagnetic lock 5.

[0021] In this embodiment, the splash tracking unit is a high-speed camera 6, which is located at the four corners inside the housing 1, and the top of the housing 1 has a built-in LED matrix lighting lamp 7.

[0022] In this embodiment, the angle measuring unit is a gyroscope sensor 8, which is integrated into the bottom of the centrifuge base platform 4.

[0023] In this embodiment, the pore size of the metal filter 3 is 1.5 mm.

[0024] In this embodiment, the splash collection unit is a grid paper 9 with a 1cm scale.

[0025] In this embodiment, the rotational speed monitoring unit is a laser velocimeter 10.

[0026] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0027] In practical use, the centrifuge rotating component damage risk protection performance testing device according to this utility model includes the following: Enclosure appearance: cubic structure (2m³), inner layer is 304 stainless steel, middle layer is energy-absorbing rubber layer (50mm thick), outer layer is transparent polycarbonate observation window; the enclosure door is equipped with an electromagnetic lock, which is linked to the speed controller and cannot be opened when overspeeding occurs.

[0028] Splash tracking unit: Four high-speed cameras (1000fps) are arranged at the four corners of the enclosure, in conjunction with built-in LED matrix lighting.

[0029] Angle measurement unit and splash collection unit: The angle measurement unit is a gyroscope sensor, and the splash collection unit is a grid liquid recording paper. The gyroscope sensor is used for: integrating the gyroscope sensor into the centrifuge base platform to record the attitude changes at the moment of explosion in real time; a 1.5 mm diameter filter screen is installed at the bottom, and the standard requirement for the 1.5 mm diameter filter screen is that scattered parts larger than 1.5 mm must not fly out of the shell; the grid liquid recording paper is 1 cm resolution and circular, recording the distribution of liquid impact points, realizing the classified collection of liquid and solid debris.

[0030] Speed ​​monitoring unit: The laser tachometer is installed on the side wall or top of the centrifuge according to the structure of the centrifuge. It is aligned with the reflective mark on the centrifuge spindle and is used to test the speed of the rotating parts of the centrifuge.

[0031] During the experimental pretreatment stage, the test tubes of the centrifuge's rotating parts need to be filled with liquid according to the specified liquid mass. Since centrifuges used in medical or biological applications are intended to avoid biological risks, an equivalent mass of red or other brightly colored liquid should be used instead. The colored liquid splashed onto the grid paper can be clearly marked.

[0032] The specific steps for using this test plan are as follows: 1. Place the centrifuge on the platform on the surface of the gyroscope and power it on. Attach reflective markers to the rotating parts inside the centrifuge. 2. Adjust the centrifuge's posture and the tachometer's position, aligning the reflective mark with the tachometer; 3. The software adjusts the gyroscope, camera, and tachometer to calibrate the position; 4. Turn on the centrifuge and set the speed to the maximum speed; 5. After the experimenter leaves the chamber and the rotation speed reaches the set value, the door lock closes and cannot be opened. The gyroscope, camera, and tachometer then begin to operate. 6. After the rotating parts explode, the gyroscope and camera record the rotation angle and rotation distance of the centrifuge as a whole; the tachometer records the maximum rotation speed of the rotating parts at the time of the explosion, and the camera can be used to review the rotation speed on video; a 1.5 mm aperture metal mesh collects solid parts with a diameter greater than 1.5 mm, and the camera can review the trajectory on video; a 1 cm grid paper collects and records the distance of liquid splash, and the camera can review the trajectory on video.

[0033] This invention not only tests the safety requirements of IEC / EN 601010-2-020, but also takes into account the integrated measurement of dynamic parameters after the explosion (such as equipment movement distance, fragment splash distance, and angular deviation) and the accuracy of test results. In addition, the protective enclosure protects the safety of test personnel, thus improving the accuracy and safety of the test.

[0034] 1) Composite Measurement System By employing a triple data verification mechanism combining laser velocimetry, gyroscope, and recording grid paper, the problem of single-sensor errors is solved. For example, high-speed camera data is compared with grid data to determine the splash distance; gyroscope angle data is cross-validated with camera motion tracking data.

[0035] 2) Modular box design The cubic structure (2m³) has an inner layer of 304 stainless steel, a middle layer of energy-absorbing rubber (50mm thick), and an outer layer of transparent polycarbonate observation window to protect test personnel and observe the test process. 3) A 1.5 mm diameter filter screen can be installed at the bottom (standard requirements stipulate that scattered parts larger than 1.5 mm must not fly out of the casing), as well as grid liquid recording paper (1 cm resolution, circular) to record the distribution of liquid landing points. This enables the separate collection of liquid and solid debris.

[0036] 4) Intelligent linkage control When the rotational speed exceeds the set threshold (e.g., 120% of the rated speed): the door will be interlocked and cannot be opened; all sensors will be activated simultaneously to enter high-speed sampling mode (upgraded from the normal 100Hz to 1kHz).

[0037] In summary, by integrating the splash tracking unit, angle measurement unit, splash collection unit, and rotation speed monitoring unit into a sealed enclosure, an integrated testing system is constructed to measure the displacement, rotation angle, movement distance, and scattering distance of fragments after damage to the rotating components of a laboratory centrifuge. This system achieves simultaneous measurement of multiple parameters and active safety protection, significantly enhancing the product's safety attributes. The equipment fully meets the requirements of current safety standards for comprehensiveness, accuracy, and safety in testing. It can complete multiple tests simultaneously, including explosion protection, fragment splash distance measurement, and equipment attitude stability assessment, achieving a 300% efficiency improvement compared to traditional separate testing methods. Furthermore, thanks to the innovative design of the enclosure structure, it combines visibility and high-level protection capabilities in the event of a rotor explosion, realizing dual functions of observation and protection, effectively improving the reliability and safety of the testing process.

[0038] 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 should be included within the protection scope of the present utility model.

Claims

1. A protective performance testing device for the risk of damage to the rotating components of a centrifuge, characterized in that, Includes a box body (1), the box body (1) is provided with a box door (2), the top of the box body (1) is provided with a splash tracking unit, the bottom of the box body (1) is provided with an angle measuring unit and a splash collection unit, and the side wall or top of the box body (1) is provided with a speed monitoring unit for aligning with the reflective mark of the centrifuge spindle; The bottom of the box (1) is provided with a groove that is lower than the bottom plane. The middle of the groove is provided with a hole (11) for placing the splash collection unit. The groove is provided with a splash collection unit and a metal filter screen (3) from bottom to top outside the hole (11). The splash collection unit is fixed to the bottom of the centrifuge through the centrifuge base platform (4).

2. The test device for centrifuge rotor breakage risk containment performance according to claim 1, wherein, The box (1) has a cubic structure. The inner layer of the box (1) is made of 304 stainless steel, the middle layer is an energy-absorbing rubber layer, and the outer layer is a transparent polycarbonate observation window.

3. The test device for centrifuge rotor crashworthiness according to claim 1, wherein The door (2) is fixed to the box body (1) by an electromagnetic lock (5).

4. The test device for centrifuge rotor crashworthiness according to claim 1, wherein The splash tracking unit is a high-speed camera (6), which is located at the four corners inside the housing (1). The top of the housing (1) has built-in LED matrix lighting (7).

5. The test device for testing the performance of the centrifuge rotation assembly breakage risk protection according to claim 1, wherein, The angle measuring unit is a gyroscope sensor (8), which is integrated into the bottom of the centrifuge base platform (4).

6. The test device for testing the performance of the protection against breakage risks of centrifuge rotating assemblies according to claim 1, characterized in that, The metal filter (3) has a pore size of 1.5 mm.

7. The protective performance testing device for the risk of damage to the centrifuge rotating assembly according to claim 1, characterized in that, The splash collection unit is a grid paper with a 1cm scale (9).

8. The protective performance testing device for the risk of damage to the centrifuge rotating assembly according to claim 1, characterized in that, The rotational speed monitoring unit is a laser velocimeter (10).

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