CN113231206B - High-speed refrigerated centrifuge - Google Patents
High-speed refrigerated centrifuge Download PDFInfo
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- CN113231206B CN113231206B CN202110391852.8A CN202110391852A CN113231206B CN 113231206 B CN113231206 B CN 113231206B CN 202110391852 A CN202110391852 A CN 202110391852A CN 113231206 B CN113231206 B CN 113231206B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B5/00—Other centrifuges
- B04B5/04—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
- B04B5/0407—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles
- B04B5/0414—Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers for liquids contained in receptacles comprising test tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B13/00—Control arrangements specially designed for centrifuges; Programme control of centrifuges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B15/00—Other accessories for centrifuges
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B7/00—Elements of centrifuges
- B04B7/02—Casings; Lids
- B04B7/06—Safety devices ; Regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B9/00—Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
- B04B9/02—Electric motor drives
- B04B9/04—Direct drive
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Abstract
The invention discloses a high-speed refrigerated centrifuge which comprises a centrifuge main body, an upper cover, a quick-assembly and disassembly rotor structure and a rotor identification structure, wherein a display screen is arranged on the front surface of the centrifuge main body, the upper cover is connected to the upper side of the centrifuge main body through a hinge, an electric push rod is arranged on the inner side of the centrifuge main body, the output end of the electric push rod is connected with the upper cover, the quick-assembly and disassembly rotor structure is arranged on the inner side of the centrifuge main body, the quick-assembly and disassembly rotor structure comprises a rotor cover, a locking nut, a button, a rotor driving block, a ball head locking pin, a motor transition shaft and a motor which are coaxially arranged, a plurality of test tube mounting positions are arranged on the rotor, the rotor identification structure is arranged between the motor and the rotor, and the rotor identification structure is used for identifying the type of the rotor. The centrifuge has the characteristics that: the assembly and disassembly are convenient and quick, and the situation that the rotor and the motor are blocked can be avoided; the rotor type recognition function is achieved, the running safety of the rotor is improved, and the centrifugal machine is protected from being damaged; the automatic opening of the upper cover at a specific large angle can be realized.
Description
Technical Field
The invention relates to a centrifuge, in particular to a high-speed freezing centrifuge.
Background
The high-speed refrigerated centrifuge is one of the most commonly used instruments in laboratories, is also a necessary device in scientific research and production of various industries, is widely applied to a plurality of fields such as medical treatment, blood stations, colleges and universities, scientific research units, biopharmaceuticals, fine chemistry industry, agriculture and animal husbandry, new materials, petroleum, food, environmental protection, genetic engineering and the like, and has huge market demand.
The existing common high-speed refrigerated centrifuge mainly has the following problems:
1. the upper cover is opened and closed by matching the air stay bar with the electronic lock, and the upper cover is pressed by force with two hands when the cover is closed, so that the lock hook on the upper cover is pressed into the electronic lock, and the electronic lock is hooked by the lock hook. When the cover is opened, the electric system triggers the electronic lock to separate the lock hook from the electronic lock, the air supporting rod props the upper cover to be opened to about 20 degrees, then the air supporting rod needs to be manually pushed open to about 70 degrees, and the whole process of opening and closing the upper cover is relatively complex in operation;
2. the rotor cover, the rotor and the motor are connected in a threaded tightening mode, tools such as an inner hexagonal wrench and the like are needed during locking and unlocking, the operation is troublesome, and the rotor cannot be quickly disassembled;
3. the rotors matched with the high-speed refrigerated centrifuge usually have various models, the sizes and the rotating speeds of the rotors in different models are different, and the corresponding rotating speeds are different due to the large difference of the sizes of the rotors, for example, a 12 × 2mL rotor corresponds to a 20000rpm rotating speed, a 10 × 15mL rotor corresponds to a 15000rpm rotating speed, a 6 × 50mL rotor corresponds to a 12000rpm rotating speed and the like. Because the maximum output torque of the motor for driving the rotor is fixed, the rotating speed of the motor is also fixed, the refrigerating capacity of the refrigerating system is the same, and the minimum reasonable parameters need to be considered for the motor and the refrigerating system. If the rotor is replaced and the rotating speed of the motor is not correspondingly adjusted, the motor may be overloaded, and overload alarm may occur, even the motor is burned out, or the refrigerating capacity of the refrigerating system cannot be reached, so that the rotating speeds of the rotor and the motor must be matched. If the rotor model is judged manually and the rotor code is correspondingly input, the time is consumed and errors are easy to make. Some centrifuges on the market adopt the mode discernment rotor of hall element detection magnet steel, and the shortcoming can detect the rotor model only after the rotor operation, only plays the effect of restriction rotational speed, and user experience feels not good.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-speed refrigerated centrifuge which is convenient to assemble and disassemble, has a rotor model identification function and can realize specific large-angle automatic opening of an upper cover, aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high-speed refrigerated centrifuge comprises a centrifuge main body, an upper cover, a quick-assembly and disassembly rotor structure and a rotor identification structure, wherein a display screen is arranged on the front surface of the centrifuge main body, the upper cover is connected to the upper side of the centrifuge main body through a hinge, an electric push rod is arranged on the inner side of the centrifuge main body, the output end of the electric push rod is connected with the upper cover, the quick-assembly and disassembly rotor structure is arranged on the inner side of the centrifuge main body, the quick-assembly and disassembly rotor structure comprises a rotor cover, a locking nut, a button, a rotor driving block, a ball locking pin, a motor transition shaft and a motor which are coaxially arranged, a plurality of test tube mounting positions are arranged on the rotor, and central through holes are respectively formed in the rotor cover, the locking nut, the rotor driving block and the motor transition shaft, the lower part of the locking nut passes through the rotor cover and is in threaded connection with the upper part of the rotor, the rotor cover is arranged above the rotor and is fixed on the outer side of the locking nut through a clamping spring, the button is arranged on the inner side of the locking nut through a spring in a floating way, the rotor driving block is coaxially fixed on the inner side of the lower part of the rotor, the motor transition shaft is coaxially positioned on the lower part of the rotor driving block through a plurality of positioning pins, the lower part of the motor transition shaft is fixedly connected with the output shaft of the motor, the motor is arranged below the rotor, the pin body of the ball locking pin is arranged in the rotor in an interference way, the upper part of the pin body of the ball locking pin is tightly pressed by an annular locking block, and the annular locking block is fixed on the rotor through a locking screw, the pin of the ball locking pin penetrates through the rotor and the rotor driving block from top to bottom and is inserted into the motor transition shaft, a radial clamping groove matched with the steel ball of the ball locking pin is formed in the inner side wall of the motor transition shaft, the upper end of the pin of the ball locking pin is over against the lower end of the button, the rotor identification structure is arranged between the motor and the rotor, and the rotor identification structure is used for identifying the type of the rotor.
In the installation process of the centrifuge, after the rotor cover, the lock nut, the button, the ball locking pin, the rotor driving block, the motor transition shaft and other components are initially installed, when the button is pressed downwards, the steel ball of the ball locking pin retracts into the bolt, the bolt can be inserted into the motor transition shaft at the moment, then the button is loosened, the outer side of the steel ball is popped out from the bolt and is embedded into the radial clamping groove on the motor transition shaft, and the axial fixation of the rotor and the motor transition shaft is realized. Similarly, when the rotor structure needs to be disassembled, the button is pressed downwards, so that the bolt is disconnected with the motor transition shaft, and subsequent disassembling operation can be carried out. After the installation, when the outer side of the steel ball of the ball locking pin is clamped in the radial clamping groove on the motor transition shaft, the rotor and the motor transition shaft can be axially fixed through the ball locking pin, so that the rotor and the output shaft of the motor can be quickly connected; when the button is pressed downwards, the bolt of the ball head locking pin is pressed downwards through the button, so that the steel ball of the ball head locking pin retracts into the bolt, and the bolt of the ball head locking pin is disconnected with the motor transition shaft at the moment.
The rotor structure of the high-speed refrigerated centrifuge is convenient and quick to disassemble and assemble, can be conveniently disassembled and assembled without other tools, and is low in replacement cost after being damaged. The rotor structure is connected with the rotor and the motor transition shaft through the ball head locking pin, and torque is transmitted to the rotor through the motor transition shaft and the rotor driving block, so that the situation that the rotor and the motor are blocked can be avoided. The high-speed refrigerated centrifuge has the function of identifying the model of the rotor, does not need to manually input the model code of the rotor, can avoid the condition of manual input error, improves the safety of the operation of the rotor, and protects the centrifuge from being damaged.
At present, the centrifugal machine on the market usually adopts the gas vaulting pole to cooperate the electronic lock to realize opening and shutting of upper cover, and the gas vaulting pole can only open the upper cover 20 degrees left and right sides opening angle, then needs the manual upper cover of pushing away to 70 degrees opening angles, and the structure is complicated, and the operation is inconvenient. The high-speed refrigerated centrifuge can realize automatic cover opening and closing of the upper cover through the electric push rod, the trouble of manual cover opening and closing is eliminated, and the specific large-angle automatic opening of the upper cover can be realized through the stroke design of the electric push rod.
Preferably, the output shaft of the motor is inserted into the motor transition shaft from bottom to top, the output shaft of the motor is in threaded connection with the motor transition shaft, the threaded connection rotation direction of the output shaft of the motor and the motor transition shaft is opposite to the threaded connection rotation direction of the lower part of the lock nut and the upper part of the rotor, a plurality of threaded holes for mounting flat-end set screws are formed in the side wall of the motor transition shaft, and the output shaft of the motor is radially pressed through the flat-end set screws. The threaded connection rotating direction of the output shaft of the motor and the transition shaft of the motor is opposite to the threaded connection rotating direction of the lower part of the lock nut and the upper part of the rotor, so that the lock nut and the rotor are more and more tightly screwed under the condition that the motor drives the rotor to operate, and the situation of looseness cannot occur when the rotor operates. The flat-end set screw plays a further radial fixing role in the connection between the motor transition shaft and the output shaft of the motor, so that the connection between the motor transition shaft and the output shaft of the motor is more reliable, and the relative rotation between the motor transition shaft and the output shaft is prevented.
Preferably, the number of the positioning pins is two, the two positioning pins are symmetrically fixed at the top end of the motor transition shaft, three waist-shaped grooves are formed in the bottom end of the rotor driving block, the three waist-shaped grooves are uniformly distributed by taking the middle point of the bottom surface of the rotor driving block as the center of a circle, the maximum distance between the center lines of any two waist-shaped grooves is the same as the distance between the two positioning pins, the two positioning pins are respectively inserted into the two waist-shaped grooves, a guide groove is formed between any two adjacent waist-shaped grooves, and each guide groove is distributed by taking the middle point of the bottom surface of the rotor driving block as the center of a circle. In the installation, no matter the rotor is in any position, two locating pins on motor transition axle top can all insert two arbitrary waist type inslots and lie in the maximum distance department between the central line in these two waist type grooves, easy to assemble, and in the use, two locating pins are clockwise and two anticlockwise radial direction atresss respectively, consequently no matter under the condition of motor deceleration or acceleration, during acceleration or the negative acceleration that the rotor received, all have a locating pin atress to guarantee the transmissibility of rotor. The guide grooves play a role in guiding, so that the two positioning pins can smoothly slide into any two waist-shaped grooves, and the convenience in mounting the rotor is improved.
Preferably, the rotor driving block is coaxially fixed at the inner side of the lower part of the rotor through a plurality of cylindrical pins and a plurality of connecting screws. The cylindrical pin can realize the accurate positioning of the rotor driving block on the rotor, and the connecting screw plays a role in further fastening, so that the smooth transmission of the torque of the motor is ensured.
Preferably, the upper end of the motor transition shaft is a tapered end, the lower end of the rotor is integrally provided with a boss protruding downwards, a tapered hole matched with the tapered end is formed in the inner side of the boss, and the tapered end is embedded in the tapered hole. The boss is matched with the tapered hole, and further positioning effect is achieved on the transition shaft of the motor.
Preferably, the rotor cover with lock nut between installed first O type circle, rotor cover's outer peripheral edges an organic whole be provided with the bulge loop of downward convexity, the top of rotor be equipped with the annular of bulge loop looks adaptation, the lower extreme of bulge loop inlay and establish the annular in, the bulge loop with the inner wall of annular between installed second O type circle.
Preferably, the electric push rod is a trapezoidal screw rod electric push rod, the upper end of the screw rod of the electric push rod is connected with a first connecting piece, the first connecting piece is connected with the upper cover, the lower end of the electric push rod is connected with a second connecting piece, the second connecting piece is connected with the bottom plate of the centrifuge body, two limit switches are arranged on the inner side of the electric push rod, the two limit switches are matched with the maximum stroke and the minimum stroke of the screw rod of the electric push rod, the lower end of the screw rod of the electric push rod is coaxially connected with a derivative shaft, the shaft end of the derivative shaft is hexagonal, and a window opposite to the position of the derivative shaft is formed in a side plate of the centrifuge body. The trapezoidal screw rod electric push rod has self-locking performance and high safety coefficient, and an electronic lock is not required to be matched with the trapezoidal screw rod electric push rod. Under the unexpected power failure condition, when unable taking out the test tube, stretch into the spanner through the window, the cover is at the axle head of deriving the axle, rotates the spanner, and the upper cover is opened to the manual, can take out the test tube fast, avoids reagent or solution to damage, treats that electric power can just restore to the original state with centrifuge.
Preferably, the rotor identification structure includes a plurality of electronic tags and a circuit board, a tag fixing block made of plastic is fixed at the lower end of the rotor, the electronic tags are fixed on the tag fixing block at equal intervals, the electronic tags store the same rotor model data respectively, an RF isolation plate is fixed at the upper end of the motor, the circuit board is mounted on the RF isolation plate, a radio frequency reader-writer, an antenna and an acceleration sensor are arranged on the circuit board, the radio frequency reader-writer is used for reading the rotor model data stored in any one of the electronic tags to identify the rotor model, the antenna is used for establishing communication connection between the radio frequency reader-writer and any one of the electronic tags and a centrifuge control system, the acceleration sensor is used for detecting the real-time vibration value of the motor, and the centrifuge control system is used for matching the rotation speed, the centrifugal force and the vibration threshold of the rotor and adjusting corresponding parameters according to the identified rotor model and the real-time vibration value of the motor. The mode that a plurality of electronic tags are distributed at the lower end of the rotor at equal intervals is adopted, the model of the rotor can be accurately identified when the rotor is at any position, no identification dead angle exists, meanwhile, the fixed positions of the electronic tags are in a balanced state, the load balance of the rotor is not damaged, and the reliability is high. The label fixing block made of plastic has small interference on signal receiving, and can ensure that the model of the rotor is accurately identified. Because the same rotor model data are stored in the plurality of electronic tags, the rotor model can be identified as long as the radio frequency reader-writer reads the data of any one electronic tag. After the model of the rotor is identified, the real-time vibration value of the motor detected by the acceleration sensor is combined, the centrifuge control system automatically matches the rotating speed, the centrifugal force and the vibration threshold value of the rotor and adjusts corresponding parameters, so that the conditions of overload, overlarge vibration and the like are prevented, and the centrifuge is protected from being damaged.
Preferably, the electronic tags are all anti-metal tags, and the type of the anti-metal tags is KLP2409; the model of the acceleration sensor is ADXL345BCCZ-RL7; the radio frequency reader-writer is an ultrahigh frequency RFID reader-writer, and the radio frequency of the radio frequency reader-writer is 902-928 MHz. Because the material of rotor is the metal, anti metal label can effectively prevent the rotor to the interference of signal, is showing the discernment success rate and the discernment distance that increase the rotor. The ultrahigh frequency RFID reader-writer is used as the radio frequency reader-writer, so that the communication speed is high, the identification distance is long, and the identification speed and the identification distance can be effectively improved compared with low frequency (125 KHz) and high frequency (13.56 MHz).
Preferably, the high-speed refrigerated centrifuge further comprises a voice broadcasting system, wherein the voice broadcasting system is used for synchronously carrying out voice broadcasting of Chinese and English switching while carrying out text prompt on the current running state, operation prompt or alarm information of the centrifuge by the display screen. Centrifugal machines on the market often adopt characters or simple buzzer sound modes in the aspect of human-computer interaction, such as alarming, running state, operation prompting and other scenes, and simple characters and sound prompts are not beneficial to a user to quickly and conveniently judge the running state of the centrifugal machine or quickly learn the use method of the centrifugal machine. After the voice broadcasting system is adopted, a user can clearly know the current running state of the centrifugal machine without watching the centrifugal machine, and the operation prompt is more visual.
Compared with the prior art, the invention has the following advantages:
1) The rotor structure of the high-speed refrigerated centrifuge is convenient and quick to disassemble and assemble, can be conveniently disassembled and assembled without other tools, and is low in replacement cost after being damaged. The rotor structure is connected with the rotor and the motor transition shaft through the ball locking pin, and torque is transmitted to the rotor through the motor transition shaft and the rotor driving block, so that the situation that the rotor and the motor are blocked can be avoided.
2) The high-speed refrigerated centrifuge has the function of identifying the model of the rotor, does not need to manually input the model code of the rotor, can avoid the condition of manual input error, improves the safety of the operation of the rotor, and protects the centrifuge from being damaged.
3) The high-speed refrigerated centrifuge can realize automatic cover opening and closing of the upper cover through the electric push rod, the trouble of manual cover opening and closing is saved, and the specific large-angle automatic opening of the upper cover can be realized through the stroke design of the electric push rod.
Drawings
FIG. 1 is a schematic view showing the internal structure of a centrifuge in examples 1 and 2;
FIG. 2 is an external view of a structure of a quick release rotor according to embodiments 1 and 2;
FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged view of FIG. 3 at B;
fig. 5 is a diagram illustrating the effect of inserting two positioning pins at the top end of the transition shaft of the motor in any two waist-shaped grooves at the maximum distance between the center lines of the two waist-shaped grooves in the embodiment 1 and the embodiment 2;
fig. 6 is a schematic view showing the effects of three electronic tags mounted on a tag fixing block in embodiment 1 and embodiment 2;
FIG. 7 is a side view of the centrifuge of example 2;
fig. 8 is an enlarged view at C in fig. 7.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The high-speed refrigerated centrifuge of embodiment 1 is shown in the figure, and comprises a centrifuge main body 1, an upper cover 11, a fast dismounting rotor structure, a rotor recognition structure and a voice broadcasting system (not shown in the figure), wherein a display screen (not shown in the figure) is arranged on the front surface of the centrifuge main body 1, the upper cover 11 is connected to the upper side of the centrifuge main body 1 through two hinges, an electric push rod 12 is arranged on the inner side of the centrifuge main body 1, the output end of the electric push rod 12 is connected with the upper cover 11, the fast dismounting rotor structure is arranged on the inner side of the centrifuge main body 1, the fast dismounting rotor structure comprises a rotor cover 2, a locking nut 3, a button 4, a rotor 5, a rotor driving block 6, a ball locking pin 7, a motor transition shaft 8 and a motor 9, a plurality of test tube mounting positions 51 are arranged on the rotor 5, the rotor cover 2, the locking nut 3, the rotor 5, the rotor driving block 6 and the motor transition shaft 8 are respectively provided with a central through hole, the lower part of a locking nut 3 penetrates through a rotor cover 2 to be in threaded connection with the upper part of a rotor 5, the rotor cover 2 is covered above the rotor 5 and is fixed on the outer side of the locking nut 3 through a clamp spring 21, a button 4 is installed on the inner side of the locking nut 3 in a floating mode through a spring 41, a rotor driving block 6 is coaxially fixed on the inner side of the lower part of the rotor 5 through three cylindrical pins 61 and three connecting screws 62, a motor transition shaft 8 is coaxially positioned on the lower part of the rotor driving block 6 through two positioning pins 81, the lower part of the motor transition shaft 8 is fixedly connected with an output shaft 91 of a motor 9, the motor 9 is arranged below the rotor 5, in the embodiment, the ball locking pin 7 is a commercially available product, a pin body 71 of the ball locking pin 7 is arranged in the rotor 5 in an interference mode, and the upper part of the pin body 71 of the ball locking pin 7 is pressed through an annular locking block 52, annular latch segment 52 passes through locking screw 53 to be fixed on rotor 5, the bolt 72 top-down of bulb fitting pin 7 passes rotor 5 and rotor drive block 6 and inserts in motor transition axle 8, radial draw-in groove 82 with bulb fitting pin 7's steel ball 73 looks adaptation is seted up to motor transition axle 8's inside wall, the upper end of bulb fitting pin 7's bolt 72 is just to the lower extreme of button 4, rotor 5 identification structure sets up between motor 9 and rotor 5, rotor 5 identification structure is used for discerning rotor 5's model, the voice broadcast system is used for carrying out the current running state of word suggestion centrifuge at the display screen, when operation suggestion or alarm information, the voice broadcast of carrying out chinese-english switching in step, prior art is adopted in the design of this voice broadcast system.
In embodiment 1, the output shaft 91 of the motor 9 is inserted into the motor transition shaft 8 from bottom to top, the output shaft 91 of the motor 9 is in threaded connection with the motor transition shaft 8, the threaded connection rotation direction of the output shaft 91 of the motor 9 and the motor transition shaft 8 is opposite to the threaded connection rotation direction of the lower part of the lock nut 3 and the upper part of the rotor 5, two threaded holes 84 for installing flat-end set screws 85 (shown in fig. 2, and not shown in fig. 3 and 4) are opened on the side wall of the motor transition shaft 8, and the output shaft 91 of the motor 9 is radially compressed by the two flat-end set screws 85.
In embodiment 1, two positioning pins 81 are symmetrically fixed on the top end of the motor transition shaft 8, three waist-shaped grooves 63 are formed in the bottom end of the rotor driving block 6, the three waist-shaped grooves 63 are uniformly arranged with the center point of the bottom surface of the rotor driving block 6 as the center of a circle, the maximum distance between the center lines of any two waist-shaped grooves 63 is the same as the distance between the two positioning pins 81, the two positioning pins 81 are respectively inserted into the two waist-shaped grooves 63, one guide groove 64 is formed between any two adjacent waist-shaped grooves 63, and each guide groove 64 is arranged with the center point of the bottom surface of the rotor driving block 6 as the center of a circle.
In embodiment 1, the upper end of the motor transition shaft 8 is a tapered end 83, the lower end of the rotor 5 is integrally provided with a boss 54 protruding downward, the inner side of the boss 54 is provided with a tapered hole 55 matched with the tapered end 83, and the tapered end 83 is embedded in the tapered hole 55; a first O-shaped ring 22 is arranged between the rotor cover 2 and the locking nut 3, a downward convex ring 23 is integrally arranged on the outer periphery of the rotor cover 2, an annular groove 56 matched with the convex ring 23 is arranged at the top end of the rotor 5, the lower end of the convex ring 23 is embedded in the annular groove 56, and a second O-shaped ring 24 is arranged between the convex ring 23 and the inner wall of the annular groove 56.
In embodiment 1, the identification structure of the rotor 5 includes three electronic tags 58 and a circuit board 93, a tag fixing block 57 made of plastic is fixed at the lower end of the rotor 5, the three electronic tags 58 are fixed on the tag fixing block 57 at equal intervals, the same data of the model of the rotor 5 are stored in the three electronic tags 58, an RF isolation board 92 is fixed at the upper end of the motor 9, the circuit board 93 is installed on the RF isolation board 92, a radio frequency reader-writer, an antenna and an acceleration sensor are arranged on the circuit board 93, the radio frequency reader-writer is configured to read the data of the model of the rotor 5 stored in any one of the electronic tags 58 to identify the model of the rotor 5, the antenna is configured to establish communication connection between the radio frequency reader-writer and any one of the electronic tags 58 and a centrifuge control system, the acceleration sensor is configured to detect a real-time vibration value of the motor 9, and the centrifuge control system is configured to match the rotation speed, the centrifugal force and the vibration threshold of the rotor 5 and adjust corresponding parameters according to the identified model of the rotor 5 and the real-time vibration value of the motor 9. Specifically, the three electronic tags 58 are all anti-metal tags, and the type thereof is KLP2409, provided by hengzhou hengtao science and technology ltd; the model of the acceleration sensor is ADXL345BCCZ-RL7; the radio frequency reader-writer is an ultrahigh frequency RFID reader-writer, the model number of which is M100, the radio frequency is 902-928 MHz, and the working frequency of 915MHz is adopted in the embodiment.
The high-speed refrigerated centrifuge of embodiment 2 is different from embodiment 1 in that, in embodiment 2, the electric push rod 12 is a trapezoidal screw rod electric push rod 12, the upper end of the screw rod 13 of the electric push rod 12 is connected with a first connecting piece 14, the first connecting piece 14 is connected with the upper cover 11, the lower end of the electric push rod 12 is connected with a second connecting piece 15, the second connecting piece 15 is connected with the bottom plate of the centrifuge body 1, the inner side of the electric push rod 12 is provided with two limit switches (not shown in the figure), the two limit switches are matched with the maximum stroke and the minimum stroke of the screw rod 13 of the electric push rod 12, the lower end of the screw rod 13 of the electric push rod 12 is coaxially connected with a derivative shaft 16, the shaft end of the derivative shaft 16 is hexagonal, and a window 17 opposite to the position of the derivative shaft 16 is formed on a side plate of the centrifuge body 1.
Above-mentioned centrifuge is in the installation, rotor lid 2, lock nut 3, button 4, bulb fitting pin 7, rotor drive block 6, after parts such as motor transition axle 8 tentatively installed, when pushing down button 4, in the steel ball 73 withdrawal bolt 72 of bulb fitting pin 7, can insert bolt 72 in motor transition axle 8 this moment, loosen button 4 again, in the outside of steel ball 73 popped out and imbeds radial draw-in groove 82 on the motor transition axle 8 from bolt 72, realize rotor 5 and motor transition axle 8's axial fixity. Similarly, when the structure of the rotor 5 needs to be disassembled, the button 4 is pressed downwards, so that the bolt 72 is disconnected with the motor transition shaft 8, and the subsequent disassembling operation can be carried out. After installation, when the outer side of the steel ball 73 of the ball locking pin 7 is clamped in the radial clamping groove 82 on the motor transition shaft 8, the rotor 5 and the motor transition shaft 8 can be axially fixed through the ball locking pin 7, and the rotor 5 and the output shaft 91 of the motor 9 are quickly connected; when the button 4 is pressed downwards, the bolt 72 of the ball locking pin 7 is pressed downwards through the button 4, so that the steel ball 73 of the ball locking pin 7 retracts into the bolt 72, and at the moment, the bolt 72 of the ball locking pin 7 is disconnected with the motor transition shaft 8. The structure of the fast dismounting rotor 5 of the centrifugal machine is convenient and fast to dismount, convenient dismounting can be achieved without the help of other tools, and replacement cost is low after damage.
The centrifugal machine can automatically open and close the upper cover 11 through the electric push rod 12, the trouble of manually opening and closing the cover is omitted, and the specific large-angle automatic opening of the upper cover 11 can be realized through the stroke design of the electric push rod 12. Under the unexpected power failure condition, when can't taking out the test tube, stretch into the spanner through window 17, the cover is at the axle head of deriving axle 16, rotates the spanner, and upper cover 11 is opened to the manual, can take out the test tube fast, avoids reagent or solution to damage, treats that electric power can just often with centrifuge reconversion.
The same data of the rotor 5 model is stored in the plurality of electronic tags 58 of the centrifuge, and the model of the rotor 5 can be identified as long as the radio frequency reader-writer reads the data of any one of the electronic tags 58. After the model of the rotor 5 is identified, the real-time vibration value of the motor 9 detected by the acceleration sensor is combined, and the centrifuge control system automatically matches the rotating speed, the centrifugal force and the vibration threshold value of the rotor 5 and adjusts corresponding parameters, so that the conditions of overload, overlarge vibration and the like are prevented, and the centrifuge is protected from being damaged.
Above-mentioned centrifuge has the voice broadcast system, and the user need not to know centrifuge's current running state clearly on duty by centrifuge, and the operation suggestion is also more directly perceived.
Claims (7)
1. A high-speed refrigerated centrifuge is characterized by comprising a centrifuge main body, an upper cover, a quick-assembly and disassembly rotor structure and a rotor identification structure, wherein a display screen is arranged on the front surface of the centrifuge main body, the upper cover is connected to the upper side of the centrifuge main body through a hinge, an electric push rod is arranged on the inner side of the centrifuge main body, the output end of the electric push rod is connected with the upper cover, the quick-assembly and disassembly rotor structure is arranged on the inner side of the centrifuge main body, the quick-assembly and disassembly rotor structure comprises a rotor cover, a locking nut, a button, a rotor driving block, a ball locking pin, a motor transition shaft and a motor which are coaxially arranged, a plurality of test tube mounting positions are arranged on the rotor, and central through holes are respectively formed in the rotor cover, the locking nut, the rotor driving block and the motor transition shaft, the lower part of the locking nut passes through the rotor cover and is in threaded connection with the upper part of the rotor, the rotor cover is arranged above the rotor and is fixed on the outer side of the locking nut through a clamping spring, the button is arranged on the inner side of the locking nut through a spring in a floating way, the rotor driving block is coaxially fixed on the inner side of the lower part of the rotor, the motor transition shaft is coaxially positioned on the lower part of the rotor driving block through a plurality of positioning pins, the lower part of the motor transition shaft is fixedly connected with the output shaft of the motor, the motor is arranged below the rotor, the pin body of the ball locking pin is arranged in the rotor in an interference way, the upper part of the pin body of the ball locking pin is tightly pressed by an annular locking block, and the annular locking block is fixed on the rotor through a locking screw, the bolt of the ball locking pin penetrates through the rotor and the rotor driving block from top to bottom and is inserted into the motor transition shaft, a radial clamping groove matched with a steel ball of the ball locking pin is formed in the inner side wall of the motor transition shaft, the upper end of the bolt of the ball locking pin is over against the lower end of the button, the rotor identification structure is arranged between the motor and the rotor, and the rotor identification structure is used for identifying the type of the rotor;
the rotor identification structure comprises a plurality of electronic tags and a circuit board, wherein a tag fixing block made of plastics is fixed at the lower end of the rotor, the electronic tags are fixed on the tag fixing block at equal intervals, the electronic tags respectively store the same rotor model data, an RF isolation plate is fixed at the upper end of the motor, the circuit board is installed on the RF isolation plate, a radio frequency reader-writer, an antenna and an acceleration sensor are arranged on the circuit board, the radio frequency reader-writer is used for reading the rotor model data stored in any one of the electronic tags to identify the rotor model, the antenna is used for establishing communication connection between the radio frequency reader-writer and any one of the electronic tags and a centrifuge control system, the acceleration sensor is used for detecting the real-time vibration value of the motor, and the centrifuge control system is used for matching the rotating speed, the centrifugal force and the vibration threshold value of the rotor and adjusting corresponding parameters according to the identified rotor model and the real-time vibration value of the motor; the electronic tags are all anti-metal tags and are of the type KLP2409; the model of the acceleration sensor is ADXL345BCCZ-RL7; the radio frequency reader-writer is an ultrahigh frequency RFID reader-writer, and the radio frequency of the radio frequency reader-writer is 902-928 MHz;
the number of the positioning pins is two, the two positioning pins are symmetrically fixed at the top end of the motor transition shaft, three waist-shaped grooves are formed in the bottom end of the rotor driving block, the three waist-shaped grooves are uniformly distributed by taking the middle point of the bottom surface of the rotor driving block as the circle center, the maximum distance between the central lines of any two waist-shaped grooves is the same as the distance between the two positioning pins, the two positioning pins are respectively inserted in the two waist-shaped grooves, a guide groove is formed between any two adjacent waist-shaped grooves, and each guide groove is distributed by taking the middle point of the bottom surface of the rotor driving block as the circle center.
2. The high-speed refrigerated centrifuge of claim 1 is characterized in that the output shaft of the motor is inserted into the motor transition shaft from bottom to top, the output shaft of the motor is in threaded connection with the motor transition shaft, the threaded connection rotating direction of the output shaft of the motor and the motor transition shaft is opposite to the threaded connection rotating direction of the lower part of the lock nut and the upper part of the rotor, the side wall of the motor transition shaft is provided with a plurality of threaded holes for mounting flat end set screws, and the output shaft of the motor is radially compressed by the flat end set screws.
3. A high speed refrigerated centrifuge as claimed in claim 1 wherein the rotor drive block is coaxially secured to the inside of the lower portion of the rotor by cylindrical pins and attachment screws.
4. A high-speed refrigerated centrifuge as recited in claim 1 wherein the upper end of the transition shaft of the motor is a tapered end, the lower end of the rotor is integrally provided with a downwardly convex boss, the inner side of the boss is provided with a tapered hole matching the tapered end, and the tapered end is embedded in the tapered hole.
5. A high-speed refrigerated centrifuge as claimed in claim 1 wherein a first O-ring is provided between the rotor cover and the lock nut, a downwardly protruding collar is integrally provided around the outer periphery of the rotor cover, an annular groove adapted to the collar is provided at the top end of the rotor, the lower end of the collar is embedded in the annular groove, and a second O-ring is provided between the collar and the inner wall of the annular groove.
6. The high-speed refrigerated centrifuge of claim 1, wherein the electric push rod is a trapezoidal lead screw electric push rod, the upper end of the lead screw of the electric push rod is connected with a first connecting piece, the first connecting piece is connected with the upper cover, the lower end of the electric push rod is connected with a second connecting piece, the second connecting piece is connected with the bottom plate of the centrifuge body, two limit switches are arranged on the inner side of the electric push rod, the two limit switches are matched with the maximum stroke and the minimum stroke of the lead screw of the electric push rod, the lower end of the lead screw of the electric push rod is coaxially connected with a derivative shaft, the shaft end of the derivative shaft is hexagonal, and a side plate of the centrifuge body is provided with a window opposite to the position of the derivative shaft.
7. The high-speed refrigerated centrifuge of claim 1 further comprising a voice broadcast system, wherein the voice broadcast system is configured to perform voice broadcast for switching between Chinese and English simultaneously when the display screen performs text prompt on the current operating state, operation prompt or alarm information of the centrifuge.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110391852.8A CN113231206B (en) | 2021-04-13 | 2021-04-13 | High-speed refrigerated centrifuge |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110391852.8A CN113231206B (en) | 2021-04-13 | 2021-04-13 | High-speed refrigerated centrifuge |
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| CN113231206A CN113231206A (en) | 2021-08-10 |
| CN113231206B true CN113231206B (en) | 2023-03-03 |
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| CN202110391852.8A Active CN113231206B (en) | 2021-04-13 | 2021-04-13 | High-speed refrigerated centrifuge |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114226079B (en) * | 2021-12-19 | 2024-09-20 | 黄国华 | High-speed refrigerated centrifuge with pre-cooled rotor replaced in advance |
| CN114950746B (en) * | 2022-07-27 | 2022-12-06 | 深圳市瑞沃德生命科技有限公司 | Rotor and centrifugal machine with same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581981A (en) * | 1945-03-02 | 1971-06-01 | Cryogenic Technology Inc | Centrifuge chuck |
| CN1840237A (en) * | 2005-03-29 | 2006-10-04 | 科峻实验仪器股份有限公司 | Centrifugal rotor enclosure fixing device |
| CN203105216U (en) * | 2012-08-14 | 2013-08-07 | 周安亮 | Opening/closing device of skylight at top end of greenhouse |
| CN211070476U (en) * | 2019-07-20 | 2020-07-24 | 湖南湘仪实验室仪器开发有限公司 | Handle assembly for disassembling centrifuge rotor and centrifuge rotor structure |
| CN211293970U (en) * | 2020-03-16 | 2020-08-18 | 四川蜀科仪器有限公司 | Centrifuge rotor recognition device based on RFID technology |
| CN111617886A (en) * | 2020-06-05 | 2020-09-04 | 衡阳师范学院 | Centrifuge rotor |
-
2021
- 2021-04-13 CN CN202110391852.8A patent/CN113231206B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3581981A (en) * | 1945-03-02 | 1971-06-01 | Cryogenic Technology Inc | Centrifuge chuck |
| CN1840237A (en) * | 2005-03-29 | 2006-10-04 | 科峻实验仪器股份有限公司 | Centrifugal rotor enclosure fixing device |
| CN203105216U (en) * | 2012-08-14 | 2013-08-07 | 周安亮 | Opening/closing device of skylight at top end of greenhouse |
| CN211070476U (en) * | 2019-07-20 | 2020-07-24 | 湖南湘仪实验室仪器开发有限公司 | Handle assembly for disassembling centrifuge rotor and centrifuge rotor structure |
| CN211293970U (en) * | 2020-03-16 | 2020-08-18 | 四川蜀科仪器有限公司 | Centrifuge rotor recognition device based on RFID technology |
| CN111617886A (en) * | 2020-06-05 | 2020-09-04 | 衡阳师范学院 | Centrifuge rotor |
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| CN113231206A (en) | 2021-08-10 |
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