A centrifuge for the production of ultraviolet absorbers

Abstract

This invention provides a centrifuge for the production of ultraviolet absorbers, relating to the field of ultraviolet absorber centrifuges. The centrifuge includes a housing, with equipment boxes fixedly mounted on both sides of the housing. A tilting assembly is installed inside the housing, rotatably connected to the inner wall of the housing. The equipment boxes allow the tilting assembly to rotate 180 degrees back and forth within the housing. A power assembly and two centrifugal components are installed within the tilting assembly, positioned at its upper and lower ends. This centrifuge for ultraviolet absorber production, by setting up centrifugal components, allows for the separation of more difficult-to-centrifuge mixtures into layers at the same rotation speed, resulting in better centrifugation effect and higher efficiency. Furthermore, by using a sealed enclosure, it consumes less power during high-speed centrifugation and can achieve higher rotation speeds.

Description

Technical Field

[0001] This invention relates to the field of ultraviolet absorber centrifuges, specifically a centrifugal separator for the production of ultraviolet absorbers. Background Technology

[0002] Ultraviolet absorbers are light stabilizers that, when added to polymer materials, absorb ultraviolet rays from sunlight, protecting the polymer materials from ultraviolet radiation and preventing photoaging. In addition, they can be applied to the surface of textiles to prepare ultraviolet-protective textiles. They can also be used to prepare some skin care products with anti-ultraviolet functions to avoid damage to human skin from ultraviolet rays.

[0003] Current centrifuges used for centrifuging ultraviolet absorbers typically have several sets of insertion holes on a rotating disk. A mixture containing the ultraviolet absorber is poured into a test tube and inserted into the insertion hole. The mixture is then centrifuged by the high-speed rotation of the disk. However, these devices often only have one row of insertion holes, limiting the amount of mixture that can be centrifuged at a time. This fails to increase the amount of mixture centrifuged per cycle and improve the production efficiency of the ultraviolet absorber. Furthermore, current centrifuges usually only have one rotating disk, and the stability of the disk's rotation relies entirely on the bearings in the drive shaft. The stability provided by these bearings is very limited and cannot further improve the stability of the rotating disk during rotation.

[0004] Existing patent CN117282553A discloses a centrifugal separation device for the production of ultraviolet absorbers, including a main chamber, a bottom chamber installed at the bottom of the main chamber, and a servo motor installed at the middle position of the bottom of the bottom chamber. The output shaft of the servo motor is equipped with a rotating tube, and a third rotating platform is installed at the bottom end of the outer side of the rotating tube.

[0005] In the above scheme, the dual-axis motor drives two sets of threaded rods to rotate synchronously. The threaded action forces the internally threaded tube to gradually rise on the outside of the threaded rod, gradually lifting the first mounting plate. The first mounting plate first raises the first rotating platform, and after the support ring reaches the bottom of the second mounting plate, it lifts the second rotating platform. This creates a large gap between the first, second, and third rotating platforms, making it easier for operators to insert multiple test tubes containing the ultraviolet absorber mixture into the placement slots on the first, second, and third rotating platforms, thus improving the overall production efficiency of the centrifuge device.

[0006] While the above solutions can increase the number of centrifuge tubes, the tubes always rotate in the same direction at high speed. If a large number of tubes are placed in a centrifuge with a fixed orientation, the centrifugation effect will be poor, requiring a significant increase in rotation speed. Increasing the rotation speed with a large number of tubes is risky and significantly increases equipment costs. Furthermore, while using bearings to restrict the centrifuge disc can improve centrifugation stability, there is a speed limit due to the actual equipment materials, and the required output force is greater, resulting in higher power consumption. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a centrifugal separator for the production of ultraviolet absorbers, which solves the problems mentioned in the background section.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solution: a centrifugal separator for the production of ultraviolet absorbers, comprising a housing, with equipment boxes fixedly installed on both the left and right sides of the housing, a flipping assembly provided inside the housing, the flipping assembly being rotatably connected to the inner wall of the housing, the equipment boxes being used for the flipping assembly to flip back and forth 180 degrees inside the housing, a power assembly and two centrifugal assemblies installed inside the flipping assembly, the two centrifugal assemblies being located at the upper and lower ends of the flipping assembly, the power assembly being used to drive the centrifugal assemblies to rotate, and the equipment boxes being used to support the centrifugal assemblies of the flipping assembly;

[0009] The centrifugal assembly includes a conical shroud, the interior of which has a hollow structure;

[0010] The power assembly includes a support sleeve and a dual-axis motor, with the output shaft of the dual-axis motor fixedly connected to the axis of the conical cover;

[0011] The conical shroud is fixed with multiple sets of displacement test tube clamps. The upper and lower walls of the conical shroud are provided with corresponding through slots, and the position and number of through slots correspond to the displacement test tube clamps.

[0012] The displacement test tube clamp includes a fixed plate and a fixed frame. Both the fixed plate and the fixed frame are fixed in a conical shroud. Two test tube racks are provided inside the fixed frame. A main shaft is provided on the side of the test tube rack. The main shaft is rotatably connected to the fixed frame. A counterweight is slidably installed on the fixed plate. A push rod is hinged to the end of the counterweight away from the axis of the conical shroud. A swing arm is fixedly installed on the main shaft of the test tube rack. The push rod is hinged to the end of the swing arm away from the main shaft. When the counterweight moves away from the conical shroud, the push rod can push the swing arm to deflect the upper end of the two test tube racks toward the axis of the conical shroud. When the counterweight is not subjected to centrifugal force, the test tube rack is vertical. Multiple springs are fixedly installed on the side of the counterweight facing the main shaft of the conical shroud. The other end of the springs is fixed to the fixed plate.

[0013] Preferably, the flipping assembly includes a closed cover, with annular sealed air passages fixedly installed at both the upper and lower ends of the closed cover, and annular open air passages fixedly installed inside both the upper and lower ends of the closed cover. The tips of two conical covers are close to each other, and blades are fixedly installed on the outer sides of the ends of the two conical covers that are far apart from each other. The blades are distributed around the conical covers, and the outer ring of the blades is in the open air passages and does not contact each other. The sealed air passages are connected to the open air passages through air blowing pipes. The air blowing pipes are all provided with the same inclination angle and match the angle of the blades. Two suction pipes are fixedly installed in the middle of the closed cover. The ends of the two suction pipes inside the closed cover are between the two conical covers and face the conical covers. Two air inlet pipes are fixedly installed at the outer end of the closed cover. The two air inlet pipes are respectively connected to the two sealed air passages. The air inlet pipes and the suction pipes are respectively connected to the equipment box.

[0014] The outer ring of the enclosure is fixedly equipped with corresponding rotating shafts, which are respectively connected to two equipment boxes.

[0015] Preferably, the equipment box is equipped with a servo motor and a circulating air pump. The output shaft of the servo motor is connected to the rotating shaft, the air outlet of the circulating air pump is connected to the air inlet pipe, and the air outlet of the circulating air pump is connected to the air extraction pipe.

[0016] Preferably, the test tube rack is a tubular structure, with multiple triangular rubber pads A fixed at one end of the test tube rack. The ends of the rubber pads A away from the test tube rack face the center of the test tube rack. Four rubber pads B are provided inside the test tube rack, three of which are fixed to the inner wall of the test tube rack, and the other is movably connected to the test tube rack. A screw is installed on the outside of the test tube rack, and the end of the screw inside the test tube rack is fixed to the movable rubber pad B.

[0017] Preferably, the opening of the open air passage is located on one side of its inner ring. The open air passage, the closed cover, and the conical cover are all concentrically arranged. The bottom end of the open air passage is provided with a trumpet-shaped opening. The larger end of the trumpet-shaped opening faces the exhaust pipe. There is a gap between the trumpet-shaped opening and the blade and the conical cover for gas escape.

[0018] Preferably, the outer surface of the blade is an inclined blade.

[0019] Preferably, the displacement test tube clamps are provided in multiple sets and are distributed in an equidistant circular array, with the end of the displacement test tube clamps near the center of the conical cover facing the axis of the conical cover.

[0020] Preferably, the fixed plate is provided with a slide rail, and the bottom surface of the counterweight is provided with a sliding groove, which cooperates with the slide rail to slide linearly.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. This centrifuge for producing ultraviolet absorbers, by setting up a centrifugal assembly, ensures that the position of the counterweight relative to the fixed plate is constantly changing when the conical hood rotates the centrifuge tubes at high speed. The centrifugal force on the counterweight and the reaction force of the spring interact with each other. Depending on the rotation speed, the position of the counterweight can be changed. At high speed, the counterweight pushes the test tube rack, which can tilt the test tubes. This makes it easier to disperse the mixture during high-speed centrifugation. Moreover, since the angle of the test tubes is not fixed, the direction of the force inside the test tubes is different during centrifugation. This allows for the separation of mixtures that are more difficult to centrifuge into layers at the same rotation speed, resulting in better centrifugation effect and higher efficiency.

[0023] 2. This centrifugal separator for producing ultraviolet absorbers features a closed hood. When the conical hood rotates at high speed, its main support shaft is the output shaft of a dual-shaft motor. Furthermore, the conical hood and the open air duct are concentrically positioned with a small gap. When the dual-shaft motor drives the conical hood to rotate at high speed, the air blowing pipe blows air into the open air duct. This creates a stable gas support layer between the open air duct, the blades, and the conical hood. This gas support also promotes the rotation of the conical hood. When the conical hood is subjected to uneven force, the gas support can resist the unbalanced force, preventing damage or speed limitation caused by uneven force on the internal dual-shaft motor main shaft. During high-speed centrifugal rotation, it consumes less power and can achieve higher speeds.

[0024] 3. This centrifuge for producing ultraviolet absorbers, by setting up a flipping component, allows the two conical hoods to switch positions continuously during centrifugation, enabling smoother separation. It can centrifuge multiple test tubes at once, and flipping the conical hoods also makes it convenient to put in and take out test tubes.

[0025] 4. The centrifuge for producing ultraviolet absorbers is equipped with a centrifugation assembly. A sealed mixed liquid test tube is inserted into a test tube rack. Rubber pads A and B can be used to restrain the test tube. Similarly, when inserting a test tube into another conical hood, the conical hood needs to be flipped. Once both conical hoods are filled with test tubes, centrifugation can be carried out. The test tubes are stably connected and will not fall off under high-speed rotation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the present invention;

[0027] Figure 2 This is a front view of the structure of the present invention;

[0028] Figure 3 This is a structural diagram of the outer casing of the device of the present invention;

[0029] Figure 4 This is a diagram showing the internal structure of the outer casing of the device of the present invention;

[0030] Figure 5 This is a structural diagram of the flipping component and the centrifugation component of the present invention;

[0031] Figure 6 This is a structural diagram of the flipping component of the present invention;

[0032] Figure 7 This is a diagram showing the assembly of the centrifugation component and the inversion component of the present invention;

[0033] Figure 8 This is a structural diagram of the centrifuge assembly of the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the displacement test tube clamp of the present invention.

[0035] In the diagram: 1. Equipment casing; 2. Equipment box; 201. Servo motor; 202. Circulating air pump; 3. Tilting assembly; 301. Enclosed cover; 302. Sealed air passage; 303. Open air passage; 304. Blade; 305. Trumpet-shaped opening; 306. Air blowing pipe; 307. Air extraction pipe; 308. Air inlet pipe; 309. Rotating shaft; 4. Power assembly; 401. Support sleeve; 402. Dual-shaft motor; 5. Centrifugal assembly; 501. Conical cover; 502. Displacement test tube clamp; 5021. Fixing plate; 5022. Fixing frame; 5023. Test tube rack; 5024. Counterweight; 5025. Top rod; 5026. Swing arm; 5027. Spring; 5028. Rubber pad A; 5029. Rubber pad B; 50210. Screw; 503. Through slot. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0040] like Figures 1-9 As shown, a centrifugal separator for producing ultraviolet absorbers includes a housing 1, with a housing 2 fixedly installed on both the left and right sides of the housing 1. A tilting assembly 3 is provided inside the housing 1, and the tilting assembly 3 is rotatably connected to the inner wall of the housing 1. The housing 2 is used to tilt the tilting assembly 3 back and forth 180 degrees inside the housing 1. A power assembly 4 and two centrifugal assemblies 5 are installed inside the tilting assembly 3. The two centrifugal assemblies 5 are located at the upper and lower ends of the tilting assembly 3. The power assembly 4 is used to drive the centrifugal assemblies 5 to rotate, and the housing 2 is used to support the centrifugal assemblies 5.

[0041] The centrifugal assembly 5 includes a conical shroud 501, the interior of which is a hollow structure;

[0042] The power assembly 4 includes a support sleeve 401 and a dual-axis motor 402, the output shaft of which is fixedly connected to the axis of the conical cover 501;

[0043] Multiple sets of displacement test tube clamps 502 are fixed inside the conical cover 501. Corresponding through grooves 503 are opened on the upper and lower walls of the conical cover 501. The position and number of through grooves 503 correspond to the displacement test tube clamps 502.

[0044] The displacement test tube clamp 502 includes a fixing plate 5021 and a fixing frame 5022. Both the fixing plate 5021 and the fixing frame 5022 are fixed in the conical cover 501. Two test tube racks 5023 are provided inside the fixing frame 5022. A main shaft is provided on the side of the test tube rack 5023, and the main shaft is rotatably connected to the fixing frame 5022. A counterweight 5024 is slidably installed on the fixing plate 5021. A push rod 5025 is hinged to the end of the counterweight 5024 away from the axis of the conical cover 501. A swing arm is fixedly installed on the main shaft of the test tube rack 5023. 5026, the top rod 5025 is hinged to the end of the swing arm 5026 away from the main shaft. When the counterweight 5024 moves away from the conical cover 501, the top rod 5025 can push the swing arm 5026 to make the upper ends of the two test tube racks 5023 deflect towards the axis of the conical cover 501. When the counterweight 5024 is not subjected to centrifugal force, the test tube racks 5023 are vertical. Multiple springs 5027 are fixedly installed on the side of the counterweight 5024 facing the main shaft of the conical cover 501. The other end of the springs 5027 is fixed to the fixing plate 5021.

[0045] The upper part of the device housing 1 is provided with two closed doors. When placing test tubes, they can be inserted through the closed doors at the top. The front of the device housing 1 is provided with a display screen and an operation panel, which can control the internal flipping component 3 to change the angle. When placing test tubes, the angle of the flipping component 3 can be switched through the operation panel.

[0046] The distance between the conical cover 501 and the dual-axis motor 402 is the same. The dual-axis motor 402 is a high-speed brushless motor with a basic speed that can be stabilized at 50,000 rpm / min. When running at low speed, it is less than 10,000 rpm / min, and at high speed, it is above 100,000 rpm / min.

[0047] The fixing plate 5021 and the fixing frame 5022 are fixed to the inner wall of the conical cover 501 by welding. The test tube rack 5023 and the counterweight 5024 are both made of metal. The counterweight 5024 is a solid structure. When the conical cover 501 rotates, the centrifugal force can be sensitively felt. The weight of the counterweight 5024 needs to be selected according to the speed range of the motor. Multiple springs 5027 are set. The specifications or quantity can be changed. It is necessary to ensure that the counterweight 5024 is in different positions when the dual-shaft motor 402 is at different speeds.

[0048] The flipping assembly 3 includes a closed cover 301. Both the upper and lower ends of the closed cover 301 are fixedly installed with annular sealed air passages 302. Both the upper and lower ends of the closed cover 301 are fixedly installed with annular open air passages 303. The tips of two conical covers 501 are close to each other, and blades 304 are fixedly installed on the outer side of the two conical covers 501 that are far apart from each other. The blades 304 are distributed around the conical covers 501. The outer ring of the blades 304 is in the open air passages 303 and the two do not contact each other. The closed air passages 302 are connected to the open air passages 303 through air blowing pipes 306. The air blowing pipes 306 are all provided with the same tilt angle and are angled to match the blades 304. The outer side of the blades 304 is an inclined blade.

[0049] Two exhaust pipes 307 are fixedly installed in the middle of the enclosure 301. The two exhaust pipes 307 are located between two conical covers 501 and face the conical covers 501. Two air inlets 308 are fixedly installed at the outer end of the enclosure 301. The two air inlets 308 are respectively connected to two sealed air passages 302. The air inlets 308 and the exhaust pipes 307 are respectively connected to the equipment box 2.

[0050] The outer ring of the enclosure 301 is fixedly mounted with a corresponding rotating shaft 309, which is connected to two equipment boxes 2 respectively.

[0051] The enclosed cover 301 has a barrel-shaped structure. The overall shape of the enclosed cover 301 matches the two conical covers 501. The sealed air passage 302 is an annular hollow cavity. The external air pump is connected to the sealed air passage 302 through the air inlet pipe 308. The angle between the air blowing pipe 306 and the open air passage 303 can tilt the air blowing. After cooperating with the blades of the blade 304, the blade 304 has less resistance when rotating at high speed, and the airflow will overflow below the open air passage 303. The airflow forms an air film between the blade 304 and the open air passage 303. This air film can be used to support the rotation of the conical cover 501 and prevent the internal clearance of the conical cover 501 from increasing due to external force deflection.

[0052] The equipment box 2 is equipped with a servo motor 201 and a circulating air pump 202. The output shaft of the servo motor 201 is connected to the rotating shaft 309. The air outlet of the circulating air pump 202 is connected to the air inlet pipe 308, and the air outlet of the circulating air pump 202 is connected to the air extraction pipe 307.

[0053] The servo motor 201 contains a worm gear reducer, which is used to drive the conical cover 501 to rotate. When the servo motor 201 rotates the conical cover 501 by 180 degrees, the air intake pipe 308 and the air extraction pipe 307 will both twist. However, when the reverse is reversed, the air intake pipe 308 and the air extraction pipe 307 will return to their original state. Moreover, after twisting by 180 degrees, the two do not affect the internal airflow.

[0054] The test tube rack 5023 has a tubular structure. One end of the test tube rack 5023 is fixed with multiple triangular rubber pads A5028. The ends of the rubber pads A5028 away from the test tube rack 5023 face the center of the test tube rack 5023. There are four rubber pads B5029 inside the test tube rack 5023. Three of them are fixed to the inner wall of the test tube rack 5023, and the other is movably connected to the test tube rack 5023. A screw 50210 is installed on the outside of the test tube rack 5023. The end of the screw 50210 inside the test tube rack 5023 is fixed to the movable rubber pad B5029.

[0055] When the test tube is inserted into the test tube rack 5023, the rubber pad B5029 can restrict the test tube. Since one of the rubber pads B5029 can move, when the screw 50210 is turned, the rubber pad B5029 can firmly lock the test tube to prevent it from falling off. Meanwhile, the rubber pad A5028 can restrict the other end of the test tube, further improving the stability of the test tube and preventing it from shaking.

[0056] The opening of the open air passage 303 is located on one side of its inner ring. The open air passage 303, the closed cover 301, and the conical cover 501 are all concentrically arranged. The bottom end of the open air passage 303 is provided with a trumpet-shaped opening 305. The large end of the trumpet-shaped opening 305 faces the exhaust pipe 307. There is a gap between the trumpet-shaped opening 305 and the blade 304 and the conical cover 501 for gas escape.

[0057] The flared opening 305 is used to quickly discharge the gas between the open air passage 303 and the blade 304.

[0058] Multiple sets of displacement test tube clamps 502 are provided and are distributed in an equidistant circular array. The end of the displacement test tube clamp 502 near the center of the conical cover 501 is always facing the axis of the conical cover 501.

[0059] The fixed plate 5021 is provided with a slide rail, and the bottom surface of the counterweight 5024 is provided with a slide groove. The slide groove and the slide rail cooperate to slide in a straight line.

[0060] In use, the sealed mixed liquid test tubes are inserted into the test tube rack 5023. Rubber pads A5028 and B5029 secure the test tubes. Similarly, when inserting test tubes into the other conical shroud 501, the shroud 501 needs to be flipped. Once both conical shrouds 501 are filled with test tubes, centrifugation can begin. The test tubes are stably connected and will not fall off during high-speed rotation. When the conical shroud 501 rotates at high speed to centrifuge the test tubes, the position of the counterweight 5024 relative to the fixed plate 5021 is constantly changing. The centrifugal force on the counterweight 5024 is mutually constrained by the reaction force of the spring 5027. Depending on the rotation speed, the position of the counterweight 5024 can be changed. At high speeds, the counterweight 5024 pushes against the test tube rack 5023, causing the test tubes to tilt. This makes it easier to disperse the mixed liquid during high-speed centrifugation. Furthermore, because the angle of the test tubes is not fixed, the contents of the test tubes during centrifugation... Due to the different directions of force, mixtures that are more difficult to centrifuge can be separated into layers at the same rotation speed. When the conical shroud 501 rotates at high speed, its main support shaft is the output shaft of the dual-axis motor 402. In addition, the conical shroud 501 and the open air passage 303 are concentrically arranged with a small gap. When the dual-axis motor 402 drives the conical shroud 501 to rotate at high speed, the blowing pipe 306 blows air into the open air passage 303. Thus, a stable gas support is formed between the open air passage 303, the blade 304, and the conical shroud 501. Moreover, this gas support can also promote the rotation of the conical shroud 501. When the force on the conical shroud 501 is uneven, the gas support can resist the unbalanced force of the conical shroud 501. During centrifugation, the two conical shrouds 501 constantly switch positions, which can achieve smoother separation. Multiple test tubes can be centrifuged at one time. Moreover, when flipping the conical shroud 501, it is also convenient to put in and take out test tubes.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0062] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0063] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A centrifugal separator for ultraviolet absorbent production, comprising a device shell (1), a device box (2) is fixedly installed on the left and right sides of the device shell (1), characterized in that: The device shell (1) is internally provided with a turnover assembly (3), the turnover assembly (3) is rotationally connected with the inner wall of the device shell (1), the device box (2) is used for the turnover assembly (3) to turn back and forth by one hundred and eighty degrees in the device shell (1), the turnover assembly (3) is internally provided with a power assembly (4) and two centrifugal assemblies (5), the two centrifugal assemblies (5) are located in the upper and lower ends of the turnover assembly (3), the power assembly (4) is used for driving the centrifugal assembly (5) to rotate, and the device box (2) is used for the turnover assembly (3) to support the centrifugal assembly (5); The centrifugal assembly (5) comprises a conical cover (501), and the inside of the conical cover (501) is a hollow structure; The power assembly (4) comprises a supporting sleeve (401) and a double-shaft motor (402), and the output shaft of the double-shaft motor (402) is fixedly connected with the shaft center of the conical cover (501); A plurality of displacement test tube clamps (502) are fixedly arranged in the conical cover (501), and the upper and lower walls of the conical cover (501) are provided with corresponding through grooves (503), the positions and the number of the through grooves (503) correspond to the displacement test tube clamps (502); The displacement test tube clamp (502) comprises a fixed plate (5021) and a fixed frame (5022), the fixed plate (5021) and the fixed frame (5022) are fixed in the conical cover (501), two test tube racks (5023) are arranged in the fixed frame (5022), a main shaft is arranged on the side surface of the test tube rack (5023), the main shaft is rotationally connected with the fixed frame (5022), a counterweight (5024) is slidably arranged on the fixed plate (5021), a top rod (5025) is hingedly arranged at the end of the counterweight (5024) away from the shaft center of the conical cover (501), a swing arm (5026) is fixedly arranged on the main shaft of the test tube rack (5023), the top rod (5025) is hingedly arranged at the end of the swing arm (5026) away from the main shaft, when the counterweight (5024) moves away from the conical cover (501), the top rod (5025) can drive the swing arm (5026) to deflect the upper ends of the two test tube racks (5023) to the side of the shaft center of the conical cover (501), when the counterweight (5024) is not subjected to centrifugal force, the test tube rack (5023) is vertical, a plurality of springs (5027) are fixedly arranged on the side of the counterweight (5024) facing the shaft of the conical cover (501), and the other ends of the springs (5027) are fixed with the fixed plate (5021).

2. The centrifugal machine for producing ultraviolet absorber according to claim 1, characterized by: The turnover assembly (3) comprises a closed cover (301), the upper and lower ends of the closed cover (301) are fixedly provided with annular closed air channels (302), the upper and lower ends of the closed cover (301) are fixedly provided with annular open air channels (303) inside, the tips of the two conical covers (501) are close to each other, the outer sides of the two conical covers (501) away from each other are fixedly provided with blade plates (304), the blade plates (304) are distributed around the conical cover (501) in one circle, the outer circle of the blade plate (304) is in the open air channel (303) and does not contact, the closed air channel (302) is communicated with the open air channel (303) through a blowing pipe (306), the blowing pipe (306) is provided with the same inclination angle and is angularly matched with the blade plate (304), the middle position of the closed cover (301) is fixedly provided with two air exhaust pipes (307), the one ends of the two air exhaust pipes (307) inside the closed cover (301) are between the two conical covers (501) and are towards the conical covers (501), the outer ends of the closed cover (301) are fixedly provided with two air inlet pipes (308), the two air inlet pipes (308) are communicated with the two closed air channels (302) respectively, the air inlet pipe (308) and the air exhaust pipe (307) are connected to the equipment box (2) respectively. The outer circle of the closed cover (301) is fixedly provided with corresponding rotating shafts (309), the rotating shafts (309) are connected to the two equipment boxes (2) respectively.

3. The centrifugal machine for producing ultraviolet absorber according to claim 2, characterized in that: The equipment box (2) is provided with a servo motor (201) and a circulating air pump (202), the output shaft of the servo motor (201) is connected with the rotating shaft (309), the air outlet end of the circulating air pump (202) is connected with the air inlet pipe (308), and the air outlet end of the circulating air pump (202) is connected with the air exhaust pipe (307).

4. The centrifugal machine for producing ultraviolet absorber according to claim 1, characterized in that: The test tube rack (5023) is in a tubular structure, a plurality of triangular rubber pads A (5028) are fixed to one end of the test tube rack (5023), the ends of the rubber pads A (5028) away from the test tube rack (5023) are towards the center of the test tube rack (5023), four rubber pads B (5029) are arranged in the test tube rack (5023), three of which are fixed to the inner wall of the test tube rack (5023), and the other is movably connected to the test tube rack (5023), a screw rod (50210) is arranged on the outer side of the test tube rack (5023), and one end of the screw rod (50210) inside the test tube rack (5023) is fixed to the movable rubber pad B (5029).

5. The centrifugal machine for producing ultraviolet absorber according to claim 2, characterized in that: The opening of the open air channel (303) is on the inner circle side, the open air channel (303) is concentrically arranged with the closed cover (301) and the conical cover (501), the bottom end of the open air channel (303) is provided with a horn-shaped opening (305), the large end of the horn-shaped opening (305) is towards the air exhaust pipe (307), and there are gaps between the horn-shaped opening (305), the blade plate (304) and the conical cover (501) for gas escape.

6. The centrifugal machine for producing ultraviolet absorber according to claim 2, characterized in that: The outer part of the blade plate (304) is an inclined blade.

7. The centrifugal machine for producing ultraviolet absorber according to claim 1, characterized in that: The variable position test tube clamp (502) is provided with multiple groups and is distributed in a equidistant circumferential array, and the end of the variable position test tube clamp (502) close to the center of the conical cover (501) faces the axis of the conical cover (501).

8. The centrifugal machine for producing ultraviolet absorber according to claim 1, characterized in that: The fixed plate (5021) is provided with a slide, and the bottom surface of the counterweight block (5024) is provided with a sliding groove; the sliding groove and the slide are matched to slide linearly.

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