141 results about "Centrifugal extractor" patented technology

This disclosure relates to an annular centrifugal extractor with Solid Separation Part to Separate Solid Particles Present in Solvent Extraction Fluid. In order to remove solid particles from the solution, a solid separation part / rotating bowl is attached to rotating bowl in such a way that solid particles settle inside the solid separation part. This solid separating centrifugal extractor contains two parts: (I) upper part which acts as a liquid-liquid separator to separate aqueous and organic solution used in solvent extraction operation and (II) bottom part which acts as a solid separator to separate solid particle present in solvent extraction liquids. The bottom rotating rotor is coupled with upper rotating rotor by threading arrangement. Both the rotating rotors are confined within a stationary cylinder. Dispersion with solid particles entering inside the rotating bowl is deflected towards the wall of the rotating cylinder by deflecting baffle by centrifugal sedimentation.

The invention provides a device for extracting cesium from lepidolite and preparing cesium formate by a preparation system of cesium formate, which comprises: an extraction section, which comprises a plurality of first high-speed centrifugal extractors connected in series, and a first extraction inlet of the first high-speed centrifugal extractor of the last stage is introduced with a liquid to be extracted; the to-be-extracted liquid is leached frozen clear liquid of lepidolite, and the frozen clear liquid is alkaline and comprises cesium, rubidium, sodium, potassium and lithium ions; the t-BAMBP is diluted by adopting ESCAID 110 as an extraction agent, the concentration of the extraction agent is 0.4-0.6 mol / L of t-BAMBP, and the O / A ratio in the extraction section is 1: (1.8-2.0); the washing section comprises a plurality of second high-speed centrifugal extractors which are connected in series; the back extraction section comprises a third high-speed centrifugal extractor, and cesium bicarbonate back extraction post-liquid flows out of a first back extraction outlet of the third high-speed centrifugal extractor; the oil removal section is used for removing oil from the cesium bicarbonate back-extraction post-liquid; and the evaporation and concentration section is used for introducing formic acid for neutralization reaction to form a cesium formate solution after oil removal, and then evaporating and concentrating the cesium formate solution to obtain the final cesium formate solution.

The utility model belongs to the field of liquid-liquid extraction separation, and particularly relates to a heat dissipation assembly and a centrifugal extractor. In order to improve the heat dissipation capability, the maximum rotating speed and the service life of the centrifugal extractor, the utility model provides the heat dissipation assembly and the centrifugal extractor comprising the heat dissipation assembly. The heat dissipation assembly comprises a bearing seat and a transmission shaft, the transmission shaft is an output shaft of the rotary power source or a rotary drum rotating shaft in transmission connection with the output shaft of the rotary power source, the bearing seat comprises a bearing sleeve used for installing and supporting a bearing, and a supporting seat is further arranged on one axial side of the bearing sleeve and comprises a fan blade installation cavity. Fan blades which are installed on the transmission shaft and synchronously rotate along with the transmission shaft are arranged in the fan blade installation cavity, an air inlet and an air outlet are further formed in the side wall of the fan blade installation cavity, and the air outlet or the air inlet is arranged towards the bearing sleeve. The fan blades are used for air-cooling the bearing sleeve, so that the heat dissipation capability and the maximum rotating speed of the centrifugal extractor can be effectively improved, and the service life can be effectively prolonged.

This invention relates to the field of centrifugal extractor technology, and more particularly to a tank-type centrifugal extractor, comprising an extraction tank, an inlet pipe and an outlet pipe disposed on the extraction tank, and valves provided on both the inlet pipe and the outlet pipe. Three extraction tanks are provided, and a switching block is provided between each extraction tank. The switching block is provided with an installation mechanism for mounting on two adjacent extraction tanks. An L-shaped cavity is formed inside the switching block, and a discharge hopper is fixedly connected to the bottom end of the L-shaped cavity. A feed hopper is fixedly connected to the top end of the other end of the L-shaped cavity. Through the configuration of the switching block and switching mechanism, this invention allows for flexible switching of the extraction system according to actual extraction needs. This enables multiple extraction tanks to not only operate independently, but also to be directly switched when multi-stage extraction is required, greatly improving the convenience and flexibility of the device.

The utility model discloses a centrifugal extractor which comprises a filtering mechanism, a mixing box and an extractor body, and the filtering mechanism comprises a guide hopper, a mounting frame, a chute, a filter screen frame body, a filter screen and a fixed block. After the filtering mechanism is used for a period of time, when the filtering mechanism needs to be cleaned, a fixing bolt is loosened, a fixing plate box is pulled out through a handle, a filter screen frame body and a filter screen can be pulled out of a mounting frame and a fixing block together, and then the filter screen can be cleaned; during installation, the filter screen frame body can be clamped in the sliding groove only by aligning the filter screen frame body with the inserting groove in the fixing block and pushing the filter screen frame body into the installation frame, and then the fixing plate is fixed on the fixing block through the fixing bolt. And the sealing ring is compressed in the process of tightening the fixing bolt, so that a good sealing effect is achieved. According to the device, the filtering mechanism can be conveniently cleaned, and the descending speed of liquid is increased, so that the extraction efficiency is improved.

1. Name of the product under this design: Centrifugal Extractor (LXC‑25). 2. Application of this design product: used for liquid phase extraction. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The utility model discloses a cosmetic raw material centrifugal extractor which comprises a supporting bottom frame, universal wheels are connected to the four corners of the bottom of the supporting bottom frame in a rolling mode, limiting assemblies are symmetrically arranged in the supporting bottom frame, and a limiting frame is fixedly arranged on the upper end face of the supporting bottom frame. A motor is arranged above the limiting frame, the output end of the motor is connected with stirring blades, the stirring blades are arranged in the rotary drum, the outer wall of the rotary drum is sleeved with a mixing tank, the outer wall of the mixing tank is provided with a light phase inlet and a heavy phase inlet, a feeding port is formed in the upper end of the limiting frame, and a control assembly is arranged on one side of the feeding port. The control assembly comprises a limiting box, a liquid level scale line and an electromagnetic valve, the liquid level scale line is fixedly arranged on the outer wall of the limiting box, a transparent cover is arranged on the front side of the outer wall of the limiting box, and a liquid discharging hopper is arranged at the upper end of the limiting box. The practicability is realized.

The present invention discloses a novel and efficient annular centrifugal extractor, which includes a rotating drum and a variable-diameter base. When the two-phase solutions are fed from the variable-diameter base and flow through the annular channel, they are driven to rotate by the blades on the outer wall of the rotating drum, realizing the relative movement and friction between the two-phase solutions and the inner wall of the variable-diameter base. The two-phase solutions undergo laminar flow and turbulent flow, achieving sufficient mixing and homogenization, and effectively realizing mass transfer between the liquid phases. The fixed blades on the variable-diameter base further enhance the mass transfer of the two-phase solutions by mixing. The baffle plates in the rotating drum block the upward flow rate of the two-phase liquids, further prolonging the mixing and mass transfer time of the two-phase solutions. For the extraction or stripping of substances or elements with slow reaction kinetics, the two-phase solutions can be effectively mixed and mass transferred in the centrifugal extractor of the present invention, improving the accuracy of extraction or stripping. Moreover, the centrifugal extractor of the present invention has a wide range of applications and can be effectively applied to the extraction or stripping of substances or elements with fast reaction kinetics.

The utility model relates to the technical field of heart extraction machine connection, and discloses a connecting structure of a centrifugal extraction machine for zirconium and hafnium process, which comprises a main body, a pipeline mounting and dismounting mechanism is arranged on the right side of the main body, and the pipeline mounting and dismounting mechanism comprises a connecting pipe, a connecting plate, a stabilizing frame, a limiting bolt and a screw rod, and the outer surface of the connecting pipe is clamped with the interior of the main body. According to the connecting structure of the centrifugal extractor for the zirconium and hafnium process, through the use of a connecting plate, a stabilizing frame and a limiting bolt, the effect that a connecting pipe is more efficient and convenient to stabilize can be achieved, stable operation of equipment is guaranteed, and through the use of a screw rod, a screwing block and an abutting block, the connecting structure is more convenient to use. By means of the flange plate, the effect that the flange plate is more stable when connecting pipes are connected can be achieved, then the problem of how to enable the connecting pipes to be connected stably is effectively solved, the effect that the flange plate is more efficient and stable in use can be achieved, the stability of equipment operation is guaranteed, and the product quality is guaranteed.

1. Name of the product under this design: Centrifugal Extractor (LXC‑250). 2. Application of this design product: used for liquid phase extraction. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present invention relates to a centrifugal extractor for eliminating resonance phenomenon, comprising a shell and a drum extraction unit. The drum extraction unit is built into the inner cavity of the shell. The drum extraction unit comprises a power shaft, a drum and a vibration-damping cylinder. The drum performs a rotational motion under the driving force of the power shaft, and completes the separation of the heavy phase and the light phase by means of different centrifugal forces. The vibration-damping cylinder is sleeved in the inner cavity of the drum to form a processing chamber between the two. The vibration-damping cylinder is sleeved on the power shaft and rotates therewith. In this way, under the premise that the volume of the drum meets the normal operation of the centrifugal extractor, the conduction path of the excitation wave in the inner cavity of the drum is effectively reduced, thereby reducing the overall amplitude of the centrifugal extractor. More importantly, when multiple sets of centrifugal extractors are used in series, vibration-damping cylinders of different diameters can be adapted to each centrifugal extractor according to actual conditions, thereby avoiding the generation of excitation at the same frequency, thereby avoiding the occurrence of resonance phenomenon.

The invention provides an efficient water separation and purification device and process for ethyl chloroacetate. An outlet of the static mixer is connected with an inlet of the filter, an outlet of the filter is connected with an inlet of the centrifugal extraction machine, an outlet of a light phase component in the centrifugal extraction machine is automatically connected with an inlet of the second-stage centrifugal extraction machine, and an outlet of a light phase component in the second-stage centrifugal extraction machine is automatically connected with an inlet of the third-stage centrifugal extraction machine; an outlet of a light-phase component in the third-stage centrifugal extractor is automatically connected with an inlet of a rectifying tower, a light-phase outlet of the rectifying tower is automatically connected with a condenser, and the condenser is connected with a return tank. Through multi-process perfect treatment, the water content and the impurity content of ethyl chloroacetate are reduced to the greatest extent, continuous operation is realized, the time of a washing procedure is greatly shortened, the efficiency is improved, the equipment investment is saved, and the production cost is reduced. The method can be used for most ester products which need to be separated from water and have no high-boiling-point impurities in the system, and the requirement for high purity of the products is met.

The utility model belongs to the technical field of beverage extraction equipment, and particularly provides a centrifugal extractor. The utility model aims to solve the problem that the extraction efficiency of the existing extraction equipment on powdery target objects such as cold extraction coffee is lower. The centrifugal extraction machine comprises a machine body, a driving device arranged on the machine body, a filtering container in driving connection with the driving device, and a hollow cover cap detachably arranged on the filtering container. A plurality of filtering holes are formed in the circumferential side wall of the filtering container, so that a powdery target object fed into the filtering container is attached to the circumferential side wall of the filtering container under the action of centrifugal force, and liquid entering the filtering container flows to the powdery target object under the action of centrifugal force to form a solution; and the solution is separated from the powdery target object under the action of centrifugal force and is thrown out of the filtering container through the filtering holes. The cap is used for receiving and adding liquid to the filtering container. The utility model solves the technical problems.

This utility model belongs to the field of corn cob processing technology, and particularly relates to a corn cob dietary fiber extraction device, including a fiber extraction device, and further comprising: a discharge trough, which is opened on the inner wall of the fiber extraction device and connected to the outside; a rotating trough, which is opened on the inner wall of the fiber extraction device, and a sieve plate is rotatably connected in the rotating trough, with one side of the sieve plate extending into the discharge trough, and the sieve plate being located below a detachable crushing plate inside the fiber extraction device; a first sliding trough, which is opened on the inner wall of the fiber extraction device and located below the sieve plate, and a slider is slidably connected in the first sliding trough, with one end of the slider extending into the inner cavity of the fiber extraction device, and a rotating block being rotatably connected to one end of the slider, and the rotating block being in contact with the bottom surface of the sieve plate; and a reciprocating assembly, which is located inside the fiber extraction device, solving the problem that corn cob fragments stuck together still affect the extraction efficiency of corn cob dietary fiber by the centrifugal extractor.

The present invention relates to a liquid sealing structure for a centrifugal extractor mandrel and a centrifugal extractor. The liquid sealing structure is arranged between the upper cover plate of the shell of the centrifugal extractor and the bearing seat. The centrifugal extractor also includes a mandrel, and the mandrel vertically passes through the bearing seat and the upper cover plate of the shell and extends into the interior of the centrifugal extractor. The liquid sealing structure includes a groove arranged on the upper end surface of the upper cover plate of the shell, the groove is arranged circumferentially along the upper end surface of the upper cover plate of the shell, and the upper end of the groove is connected to the bearing seat. A liquid sealing chamber is arranged in the groove, and a liquid sealing medium is arranged in the liquid sealing chamber. A liquid inlet connected to the liquid sealing chamber for the liquid sealing medium to enter is opened at the lower part of the bearing seat. In this way, no gas leakage can be achieved, which not only meets the sealing requirements, avoids the volatile substances in the feed liquid in the machine from volatilizing to the outside of the centrifugal extractor to cause material waste and environmental pollution, but also overcomes various shortcomings in the above-mentioned traditional sealing technology.

The invention belongs to the technical field of beverage extraction equipment, and particularly provides a centrifugal extractor. The invention aims to solve the problem that the soaking time is long when the existing extraction equipment performs cold extraction on powdery target objects such as coffee. The centrifugal extractor comprises a machine body, a driving device, a filtering container driven by the driving device, a first liquid storage container with a liquid discharge hole, a control valve for controlling the liquid discharge hole to be opened and closed, a pumping system for pumping a solution in the first liquid storage container into the filtering container, and a concentration detection device for detecting the concentration of the solution in the first liquid storage container. A plurality of first through holes are formed in the circumferential wall of the first liquid storage container, so that liquid entering the filtering container penetrates through the powdery target object in the filtering container and the first through holes under the action of centrifugal force to form a solution. The first liquid storage container is used for receiving the solution thrown out of the filtering container and enabling the control valve to open the liquid discharge hole when the concentration of the solution in the first liquid storage container reaches a set value. The technical problems are solved.

The utility model relates to the technical field of centrifugal extractors and discloses a centrifugal extractor for extracting and separating amino acid mixed liquor, which comprises a centrifugal machine, a liquid inlet pipe is fixedly connected onto the centrifugal machine, a stop valve is fixedly connected to the center of the liquid inlet pipe in a penetrating manner, and a stop rod is slidably connected to the upper end of the stop valve in a penetrating manner. According to the centrifugal machine, the stirring shaft can be automatically opened to stir liquid in the liquid storage tank before the liquid is input into the centrifugal machine, it is ensured that components in the liquid are fully mixed, the precipitation or layering phenomenon is avoided, and therefore the subsequent centrifugal treatment effect and the data accuracy are improved; stirring in the liquid storage tank can be automatically suspended, unnecessary energy consumption is reduced, unnecessary operation time of the stirring shaft is shortened, so that abrasion and failure rate of the stirring shaft are reduced, the service life of equipment is prolonged, meanwhile, automatic control is adopted, steps of manual operation are effectively reduced, and production efficiency is improved. The tedious process of manually starting and stopping stirring is avoided.

The utility model relates to the technical field of centrifugal extraction machine fixing, and discloses a centrifugal extraction machine fixing device for zirconium and hafnium production, which comprises a centrifugal extraction component, and a plurality of connectors are arranged on the outer wall of the centrifugal extraction component. The centrifugal extractor and the outside of an inlet of an external connecting pipeline can be pressed and locked, so that the connecting tightness of the external connecting pipeline and a connector is further improved, and the problem that the external connecting pipeline and the connector are loosened due to long-time operation of the centrifugal extractor is avoided; after the vertical plate is slidably connected and fixed to the base, the centrifugal extraction assembly and the vertical plate are connected and fixed by using the threaded cylinder to be matched with the fixed connecting piece and using the top piece to be matched with the top block, so that multiple positions outside the centrifugal extraction assembly are fixed; therefore, the stability of the centrifugal extraction assembly fixed by the fixing device is improved.

The invention relates to the technical field of centrifugal extractors, in particular to a tank type centrifugal extractor which comprises three extraction tanks, a feeding pipe and a discharging pipe, the feeding pipe and the discharging pipe are arranged on the extraction tanks, valves are arranged on the feeding pipe and the discharging pipe, a conversion block is arranged between every two extraction tanks, and the conversion blocks are connected with the valves. The conversion block is provided with a mounting mechanism used for being mounted on two adjacent extraction tanks, an L-shaped cavity is formed in the conversion block, the bottom end of the L-shaped cavity is fixedly connected with a discharging hopper, and the top end of the other end of the L-shaped cavity is fixedly connected with a feeding hopper in a penetrating manner. The extraction system is flexibly converted, so that the multiple extraction tanks not only can independently operate, but also can be directly converted to carry out multi-stage extraction processing when multi-stage extraction is needed, the convenient performance of the device is greatly improved, and meanwhile, the flexible performance of the device is improved.

The invention relates to the technical field of engineering material determination, in particular to an asphalt test detection extraction device which comprises a sleeve screen, a screening seat and a centrifugal extractor, the sleeve screen comprises a plurality of sleeves, screen plates are arranged in the sleeves, and the screen plates are rotatably mounted in the sleeves through hinge shafts; a rotary driving unit for driving the sieve plate to rotate around the hinge shaft is arranged outside the sleeve; a limiting bump protruding upwards is arranged at one end, far away from the hinge shaft, of the sieve plate; a first limiting groove is formed in the inner wall of the side, away from the hinge shaft, of the sleeve, an inserting hole communicated with the exterior of the sleeve is formed in one side of the first limiting groove, and a partition plate as wide as the sieve plate is arranged outside the sleeve, inserted into the sleeve through the inserting hole and located below the inclined sieve plate; according to the technical scheme, by arranging the inclinable sieve plates and the insertable partition plates, when the sieve plates incline to drain water, the partition plates can effectively prevent mixed liquid left at the bottom of the upper-layer sieve plate from flowing onto materials on the lower-layer sieve plate, and the precision of subsequent mineral aggregate grading detection is improved.

The utility model relates to the technical field of centrifugal extractors, in particular to an efficient centrifugal extractor capable of equivalently and repeatedly feeding, which comprises a base, a centrifugal device and a liquid adding device which are sequentially arranged from bottom to top, the liquid adding device comprises a collecting hopper and a plurality of feeding pipes, and the feeding pipes are installed in the collecting hopper in a flush mode. Adjusting rods are fixedly inserted in the middles of the multiple feeding pipes, and adjusting knobs are installed at one ends of the adjusting rods in a transmission mode and used for controlling the flow speed of the multiple feeding pipes. The lower end of the collecting hopper communicates with the centrifugal device; a driving device is mounted in the base, the starting end of the driving device is electrically connected with the starting button through an electric wire, the driving end of the driving device is connected with the centrifugal device, and the driving device is used for driving the centrifugal device to rotate, so that internal materials and solution are rotationally separated, and the separated solution is collected. According to the utility model, through accurate control of feeding and efficient centrifugal separation, equal-quantity multi-time treatment of materials and extraction of solutions are realized, and the safety and health of operators are also guaranteed.

The invention discloses a movable material separation and purification control method and a purification system. The purification control method comprises a purification control terminal; the purification control terminal at least comprises a first purification control terminal; the first purification control terminal at least comprises a first controller, a first centrifugal extraction unit control module, a first valve group control module and a first pump group control module, and the first controller comprises a first human-computer interaction interface and a first control module; an operator sets control parameters of the first purification control terminal through the first man-machine interaction interface, and the first control module controls the first centrifugal extraction unit control module, the first valve group control module and the first pump group control module to implement control work through the control parameters. And an operator at least obtains the operation state of the first centrifugal extraction unit and / or the first valve group and / or the first pump group on the first man-machine interaction interface. According to the purification control method, the separation and purification system is controlled, and automatic purification control is achieved.

The utility model discloses a feeding mechanism of a centrifugal extractor, which comprises a main body mechanism and a circulating mechanism, the main body mechanism comprises a barrel body, a partition plate fixed in an inner cavity of the barrel body, a guide plate fixed on the inner wall of the barrel body, a stirring piece mounted at the top end of the partition plate and penetrating through the partition plate to extend out, and a feeding pipe mounted on the outer side of the barrel body and communicated with a cavity between the partition plate and the guide plate; one end of the annular filter screen is fixed to the bottom end of the flow guide plate, the other end of the annular filter screen is fixed to the inner bottom wall of the barrel, the temperature sensor is installed on one side of the barrel and stretches into a cavity between the partition plate and the flow guide plate, the barrel is used for installing other assemblies, and a cavity between an inner cavity of the barrel and the partition plate and the flow guide plate is arranged to be a stirring cavity used for stirring mixed liquid. A cavity between the guide plate and the inner bottom wall of the barrel is set as a filtering cavity for filtering the mixed liquid, and the feeding mechanism of the centrifugal extractor has the advantages of being good in mixing effect and high in practicability.

The utility model relates to a kind of methyl anthranilate production water washing devices, belong to water washing equipment technical field, including neutralization tank, stirring equipment, effluent pipe, centrifugal extractor one, water washing tower, filler layer, water distributor, effluent pipe is connected with centrifugal extractor two, the top of neutralization tank is equipped with conical distribution inner tube, the outside of distribution inner tube is equipped with circular outer tube, the bottom of circular outer tube and distribution inner tube fixed place evenly are equipped with multiple connecting neutralization tank liquid guide pipe, the top of circular outer tube is fixed with liquid inlet pipe, and material inlet pipe and sodium carbonate solution inlet pipe are connected on liquid inlet pipe.The utility model makes reaction liquid and sodium carbonate solution can be fully mixed and evenly distributed before entering neutralization tank, combined with the stirring effect of stirring equipment, greatly improve the efficiency and sufficiency of neutralization reaction, improve separation efficiency, significantly increase two-phase contact area, and water washing efficiency is improved.

The invention provides a centrifugal extractor and a control method thereof. The centrifugal extractor comprises a driving device, a filtering container driven by the driving device to rotate and a circulating pump liquid device. The control method comprises the following steps: in response to a received starting instruction, controlling a driving device to drive a filtering container to rotate at a first rotating speed rule until a first preset condition is met, so that a powdery target object put into the filtering container is attached to the circumferential side wall of the filtering container under the action of centrifugal force; in response to the fact that the extraction starting condition is met, the driving device is controlled to drive the filtering container to rotate at a second rotating speed rule, and the circulating liquid pumping device operates, so that liquid entering the filtering container penetrates through the powdery target object under the action of centrifugal force to form a solution and is thrown out of the filtering container, and then the liquid flows back into the filtering container through the circulating pump liquid device.

The utility model relates to the technical field of centrifugal machines, in particular to a centrifugal machine with a feeding efficient mixing device, which comprises a machine body, a control panel is fixedly connected to the front side of the outer wall of the machine body, a motor is fixedly connected to the middle of the top of the machine body, and a rotating shaft is fixedly connected to the middle of the bottom of the motor. The bottom end of the rotating shaft penetrates through the top of the machine body and is fixedly connected with a rotating drum, the outer wall of the rotating drum is movably arranged on the upper portion of the interior of the machine body in a limited mode, and the top end of the feeding terminal is fixedly connected to the bottom of the rotating drum. The centrifugal extractor is ingenious in structure, two kinds of feed liquid are mixed in the vortex disc, and the replaceable axial flow impeller is arranged in the feeding terminal, so that the device is strong in suction force, low in power consumption, energy-saving and environment-friendly, and the centrifugal extractor is simple in structure, easy to process and convenient to replace.

This invention relates to the field of petroleum component processing for high-aromatic oils, specifically a method and apparatus for enriching aromatic components. The former comprises the following steps: First, the feedstock oil, after primary adsorption refining, enters a multi-stage centrifugal extractor. In the multi-stage centrifugal extractor, the extraction solvent flows counter-currently with the feedstock oil for solvent extraction, yielding raffinate and extracted oil. Second, the extracted oil undergoes sedimentation separation to obtain upper and lower extracted oils. Third, the lower extracted oil undergoes sequential solvent separation and secondary adsorption refining to complete the enrichment and separation of high-aromatic oils from the feedstock oil, resulting in high-aromatic environmentally friendly rubber oil. This invention can simultaneously achieve both oil yield and aromatic selectivity, obtaining aromatic-rich components with an aromatic content greater than 75% and an aromatic extraction rate higher than 60%, ultimately yielding C... A It is a high-aromatic environmentally friendly rubber oil with 20% to 30% aromatics, which further improves the utilization rate of mono- and bi-cyclic aromatics in vacuum distillate oil, can achieve continuous operation, and has high refining efficiency and high recovery rate.

The present invention belongs to the technical field of beverage extraction equipment, and specifically provides a centrifugal extractor with a cyclic extraction function. The centrifugal extractor includes a liquid storage container, a driving device, a filter container, a reflux cover and an impeller. The driving device is relatively fixed to the liquid storage container. The filter container is arranged in the liquid storage container and is connected to the driving device. The reflux cover is relatively fixed to the liquid storage container in the liquid storage container, the reflux cover is buckled on the outside of the filter container, and the reflux cover is defined by a reflux channel extending from its bottom end to the top side of the filter container. The impeller is arranged in the liquid storage container and is connected to the driving device, at least a part of the impeller is radially located on the outside of the filter container, and the impeller is located on the bottom side of the reflux cover to drive the liquid in the liquid storage container to flow back to the filter container via the reflux channel.

1. Name of the designed product: frame (centrifugal extractor). 2. Use of the designed product: used for providing support for centrifugal extractor. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: design 1 perspective view. 5. Parts of the designed product not easily seen or not seen when in use, omitting design 1 top view, design 2 top view, design 3 top view. 6. Design 1 is designated as the basic design. 7. Other circumstances needing explanation: design 1, design 2 and design 3 are similar designs.

The utility model discloses a cleaning device for a centrifugal extractor, which comprises a fixed base, an extraction cylinder is fixedly arranged on the upper end face of the fixed base through a turntable, a plurality of shroud rings are sleeved on the side end face of the extraction cylinder in a sliding manner, and the shroud rings are fixedly connected with the fixed base through vertically placed support rods. A rotating motor which is positioned above the extraction cylinder and is connected with a stirring device in the extraction cylinder is fixed on a supporting rod, and the rotating motor and the stirring device are fixed with and separated from the extraction cylinder through a telescopic fixing device arranged on the upper end surface of the extraction cylinder; the stirring device is arranged on the fixed base, so that the extraction barrel and the stirring device rotate together relative to the fixed base, and a lifting type cleaning scraper on the extraction barrel is propped against all the inner walls of the extraction barrel during lifting. The device can comprehensively clean the inner wall of the extraction barrel of the centrifugal extraction machine on the premise that the centrifugal extraction device is not disassembled, the automation degree is high, the cleaning efficiency is high, and use is convenient and fast.