130 results about "Centrifugal field" patented technology

A solid-jacket screw centrifuge (1) for processing a suspension Su in a centrifugal field with a frame (100) and a rotor (200) rotatably mounted in the frame (100), which has at least the following features: a) a rotatable drum (210) with axis of rotation (D), wherein the drum (210) has a cylindrical section (211) and a conical section (212), b) a feed pipe (217) projecting into the drum (210) and arranged concentrically to the axis of rotation D, through which the suspension Su to be processed can be directed into a separation chamber (219) of the drum (210), c) at least one liquid drain (214), d) at least one solid discharge (216), , e) a screw (230) arranged in the drum (210) which is rotatable relative to the rotatable drum (210) at a differential speed, f) wherein a bearing and drive system (250) of the rotor (200) comprises at least one rotor unit (251a, 252a), a first magnetic bearing unit (251) and a second magnetic bearing unit (252), wherein the first magnetic bearing unit (251) provides a radially and axially acting levitronic bearing for the drum (210) and the second magnetic bearing unit (252) provides a radially and axially acting levitronic bearing for the screw (230), g) wherein at least the worm (230) is mounted in the drum (210) in a sliding and rotatable manner relative to it, and h) wherein at least the drum (210), the screw (230) and the inlet and outlet system (217, 214, 216) are each made entirely or predominantly of a non-magnetic material, in particular of plastic and / or a plastic composite material and / or of titanium.

The invention relates to the technical field of wave-absorbing materials, in particular to a broadband wave-absorbing material and a preparation method and application thereof. According to the preparation technology of the wave-absorbing material, a non-woven fabric carrier with graded pores and continuous gradient distribution is constructed by virtue of induction of a centrifugal force field, and then the non-woven fabric carrier is placed in a magnetic dispersion liquid system to be subjected to impregnation ultrasonic dispersion load treatment, so that heterogeneous interface structures are constructed on the surfaces and the interiors of fibers, and the prepared material fabric has the characteristics of light weight and broadband wave-absorbing performance; the method is suitable for military and civil high-tech fields such as electromagnetic protective clothing and invisibility. The method has the advantages of short production period, high raw material utilization rate and the like.

The invention discloses graphite battery negative electrode material testing and sampling equipment, and particularly relates to the technical field of battery negative electrode material reaction treatment, the graphite battery negative electrode material testing and sampling equipment comprises a base, a crushing and shunting assembly is arranged on the base, and the crushing and shunting assembly comprises a reaction kettle body arranged at the top of the base. Through a stepped crushing structure of the spiral crushing belt and the twisting ring, and a centrifugal force field eddy current effect formed by rotation of the inclined grinding block, three-stage treatment of materials is realized. Wherein the spiral lead angle design of the spiral crushing belt can ensure that blocky materials are uniformly stressed in the axial direction, and local over-crushing is avoided; the gap between the twisting ring and the base plate is adjustable and can adapt to test scenes with different particle size requirements; the powder can be automatically graded according to the particle size through the eddy current effect generated by rotation of the inclined grinding block, qualified particles are accurately filtered and deposited through the filter screen cover, coarse particles flow back to the crushing cavity through the guide cylinder to be continuously treated, and the problem that particles are not evenly distributed in an existing quartering method sampling process is effectively solved.

The invention relates to an offshore wind turbine large-diameter single pile foundation similarity test method for a centrifugal machine platform. The method is suitable for the technical field of offshore wind turbine single-pile model test design under geological engineering sea area earthquake load. The technical problem to be solved by the invention is to provide the similar test method for the large-diameter single pile foundation of the offshore wind turbine for the centrifugal machine platform. According to the technical scheme, the similar test method for the large-diameter single pile foundation of the offshore wind turbine for the centrifugal machine platform is characterized by comprising the following steps: determining a model between a prototype structure in a prototype field and a primary scaling model in a 1g field; the similarity criterion obeyed by each test parameter between the primary scaling model and the secondary scaling model in the centrifugal field is determined; and determining the similarity ratio of each test parameter between the prototype field and the centrifugal field based on the similarity criterion followed by each test parameter after two times of scaling.

The utility model relates to a multifunctional mixing device for cement processing, which comprises a mixing barrel, a feeding hole formed in the upper side of the left part of the mixing barrel, a mounting seat connected to the upper side of the middle part of the mixing barrel, a driving motor mounted on the mounting seat, a centrifugal stirring frame connected to an output shaft of the driving motor, and a stirring component rotationally connected to the mixing barrel, the upper part of the mixing barrel is rotatably connected with a rotating shaft, a belt pulley assembly is arranged between the upper part of the rotating shaft and an output shaft of the driving motor, the rotating shaft is connected with a first gear, the upper part of the stirring assembly is connected with a second gear, and the second gear is meshed with the first gear. Through mutual cooperation of the centrifugal stirring frame and the stirring assembly, a synergistic effect of a strong centrifugal force field and slow shearing is formed, materials can be rapidly mixed, the materials are prevented from caking, the mixing uniformity is effectively improved, the scraping blades on the stirring assembly can be dynamically attached to the inner wall of the mixing barrel, the adhered materials can be scraped in real time, and material waste is reduced.

The invention relates to the technical field of waste gas treatment, in particular to a medicine production waste gas treatment method which comprises the following steps: step 1, waste gas pretreatment: 1, particulate matter removal: electrostatic dust collection and ceramic membrane filtration are performed, the pore size of a ceramic membrane is 0.1 mu m, and the PM2.5 retention rate is greater than 99%; 2, temperature and humidity regulation: spraying and cooling to 40 + / -2 DEG C, and controlling the humidity to be 60% RH; step 2, supergravity rotating absorption: adopting a supergravity rotating bed, and when the supergravity factor beta is 200, the rotating speed is 2500rpm, the gas-liquid ratio is 1: 0.3 and the inlet gas concentration is 5000mg / m, the single-stage absorption rate is greater than 95%, and the outlet concentration is less than 250mg / m. A traditional packed tower is replaced with a supergravity rotating bed (a rotating packed bed RPB), and the gas-liquid mass transfer efficiency is improved by 5-8 times; the thickness of a liquid film in a centrifugal force field is reduced to a micron order, a diffusion path is shortened, and the absorption rate constant (KLa) is increased to 10 times that of an atmospheric tower.

The application discloses a kind of momentum defoaming based deep gas purification device and method, it is related to chemical equipment technical field, including tank, dynamic distributor, with several momentum defoaming ware momentum defoaming module, fiber condensation module and rotary liquid removal module, tank is equipped with oil gas inlet, liquid phase outlet, gas phase outlet, oil gas inlet is connected dynamic distributor by pipeline, dynamic distributor end is connected with momentum defoaming module;Momentum defoaming module top is equipped with fiber module and rotary liquid removal module in sequence.This application utilizes the momentum of gas-liquid mixture and the baffle in momentum defoaming ware to collide, break up foam liquid drop, and make liquid drop move to the edge of baffle, under the driving of subsequent airflow, discharge, realize the elimination of foam liquid drop;The remaining micro liquid drop is coalesced and grown into larger droplet by fiber condensation module, finally enters rotary liquid removal module, realizes the efficient separation of liquid drop and gas under the action of centrifugal field, reaches the effect of gas deep purification.

The invention provides a gas-liquid separation device based on stepped bubble breaking. The gas-liquid separation device comprises an outer cavity and a rotating mechanism, the outer cavity comprises an inlet cavity and a liquid bearing cavity; a separation cavity, a bubble breaking element and a transmission shaft are sequentially and coaxially arranged in the liquid bearing cavity from top to bottom, the transmission shaft is fixed below the bubble breaking element and is in transmission connection with the rotating mechanism, and the rotating mechanism drives the bubble breaking element and the separation cavity to rotate synchronously; the top end of the exhaust pipe extends out of the upper end surface of the inlet cavity and exhausts air outwards. According to the invention, a variable super-gravity field is provided, a centrifugal field is dynamically enhanced, bubble breaking and separation processes are coupled, strong breaking of large bubbles and micro bubbles is realized through shear flow-turbulent flow driving, deep separation of membrane liquid drops is enhanced by using a gas-liquid density difference effect, and a high-precision bubble breaking effect is realized.

The invention discloses a centrifugal force field laminar flow optimization separation control method, relates to the technical field of fluid separation, and aims to solve the problem that the separation precision is reduced due to the fact that the laminar flow state is easily damaged in the prior art. Comprising the following steps; the method comprises the steps that S1, centrifugal force field intensity, material viscosity, flow velocity gradient and material solid content data are collected in real time to serve as core variables, a coupling mathematical model of a centrifugal force field and a material laminar flow state is constructed, and therefore a laminar flow stability coefficient is output; s2, setting a laminar flow stability threshold value and an adjusting mechanism, comparing the laminar flow stability coefficient with the threshold value, when the coefficient is lower than the threshold value, judging that the laminar flow state of the material is abnormal, triggering the adjusting mechanism to dynamically adjust the operation parameters of the horizontal spiral discharge sedimentation centrifuge, and stopping the operation of the horizontal spiral discharge sedimentation centrifuge. The operation parameters comprise the rotating speed of the rotary drum, the differential speed of the spiral and the rotary drum and the feeding flow. The device has the advantage that the separation precision is improved.

The invention relates to the technical field of jam mixing, in particular to a jam mixing machine which comprises a machine body, the machine body is provided with a mounting cover through magnetic attraction, the mounting cover is fixedly connected with a motor, the output end of the motor is fixedly connected with a driving shaft extending into the machine body, and the driving shaft is fixedly sleeved with a driving gear; a first connecting gear meshed with the driving gear and the rotating fluted disc is rotationally mounted on the machine body, and a stirring part and a rolling part are fixedly arranged at the end, extending into the machine body, of the driving shaft. A high-strength centrifugal force field is generated through the stirring rods rotating at a high speed, so that materials are preliminarily dispersed, a gradient type rolling effect is formed through forward and reverse alternate pressure application of the rolling plates, and meanwhile, a plurality of crushing discs are arranged to crush part of fruit grains, so that the part of fruit grains are better crushed; therefore, a multi-layer taste system containing basic fruit paste, fine particles and visible pulp is constructed, so that the jam product has fine texture and chewing interestingness.

The invention relates to a set of separator inserts (II, II-a, II-b,...) for a separator having a frame (I) on which one of the separator inserts (II, II-a, II-b,...) of the set of separator inserts (II, II-a, II-b,...) is exchangeably arranged at a time, wherein each of the separator inserts is designed to separate a free-flowing suspension (S) in a centrifugal field into at least two phases (LP, HP) of different densities and forms a pre-assembled exchangeable unit for insertion into the frame (I) of the separator and has at least the following: a rotor (2) which can be rotated about an axis of rotation (D) during operation and has a drum (3) that can be rotated during operation and that has one or more openings; a separating means (6) arranged in the drum (3); an inflow and outflow system having at least one inlet (311, 312) for a free-flowing suspension to be processed and having two or more outlets (313, 314) for discharging the centrifugally separated phases from the drum (3), wherein at least two separator inserts (II, II-a, II-b,...) of the set have different inflow and outflow systems (31), and / or at least two separator inserts (II, II-a, II-b,...) of the set have drums (3) having drum casings with different geometries.

This invention relates to the field of hydraulic oil purification technology, specifically a method for online hydraulic oil purification and performance regeneration based on centrifugal force field control. The method includes: online acquisition of real-time operating parameters of the hydraulic system and hydraulic oil state data; prediction of contaminant concentration distribution and deteriorated component content; dynamic calculation of the centrifugal force field intensity distribution curve using a state inversion algorithm; and control of the centrifugal device to form a gradient-changing directional centrifugal force field. Based on gradient centrifugation, the method removes solid particles, free water, and colloidal substances step-by-step. Simultaneously, it fine-tunes the local intensity of the centrifugal force field according to the deteriorated component content, selectively removing deteriorated oil molecular components while retaining intact base oil and effective additives. This method enables precise online grading and purification of hydraulic oil, adapts to the real-time state of the oil, improves impurity removal, simultaneously completes oil performance regeneration, and optimizes the quality of purification and regeneration treatment.

The invention relates to a non-porous drum screw centrifuge for the centrifugal treatment of a suspension Su in a centrifugal field, with which the suspension Su can be separated into at least one liquid phase (Fl) and a solid phase (Fe), comprising a housing (100) and a rotor (200) which is rotatably mounted in the housing (100), the rotor has at least the following items: a) a rotatable cylinder (210) having a rotational axis (D), the cylinder (210) having a cylindrical section (211) and a conical section (212); b) a screw (230) which can be rotated relative to the rotatable cylinder (210) by a difference in revolution and is arranged in the cylinder (210); c) a feed line (214) through which the suspended matter (Su) to be treated can be introduced into the separation space (216) of the cartridge (210); d) at least one liquid outlet (217) through which the liquid phase (Fl) is discharged, the liquid outlet (217) having at least one overflow weir (219); e) at least one solids discharge opening (218) through which the solid phase (Fe) is discharged; the invention is characterised in that f) in order to discharge a partial flow (fl) of the liquid phase (Fl), a stationary, non-rotating stripping means during operation is arranged in the region of the overflow weir (219) such that the partial flow (fl) of the liquid phase (Fl) can be skimmed under pressure from the liquid phase flowing through the overflow weir before the liquid phase flowing through the overflow weir leaves the rotor rotating during operation.

The present invention relates to a solid bowl centrifuge, in particular a two-phase or three-phase solid bowl centrifuge, comprising a drum (1) which rotates during operation about its axis of rotation and which has a supply of suspension to be treated in a centrifugal field, a rotor with a separation chamber (5) in which a screw (2) which rotates during operation is arranged, a solid material discharge (14) for discharging a solid phase (S) and at least one liquid outlet for discharging at least one liquid phase (L), the at least one liquid outlet comprising a device (6) for influencing the immersion depth (Dt) in the separation chamber (5) or the diameter of a separation zone (Dz) in the separation chamber (5), said device (6) comprising at least one or more pressure chambers into which a fluid supply line feeds and which applies a gas pressure in each pressure chamber to at least one surface of the discharged liquid phase in order to influence, in operation, the diameter of the immersion depth (Dt) and / or the diameter of the separation zone (Dz) in the bowl (1), in particular in a controlled or regulated manner. Each pressure chamber is formed in the rotor and one or more functional discs are arranged in the region of each pressure chamber, all of which rotate together with the rotor in operation.

The invention discloses a device and method for cyclone centrifugal separation and purification of metal melt. The device is composed of a fluid power unit, a centrifugal separation unit and a heat preservation unit. A rotational flow centrifugal mechanical effect is innovatively combined with a metal melt purification process, and in-situ continuous separation of impurity phases is realized based on density difference under the action of a centrifugal field by regulating and controlling key parameters such as the flow of a melt pump, structural parameters of a rotational flow device and the diameter of an underflow opening. The method for separating and purifying the metal melt by using the device comprises the following steps: (1) starting the heating device to preheat the cyclone centrifugal separator; (2) a melt pump is adopted to input metal melt into a rotational flow centrifugal separator at a high speed through a feeding port; and (3) the purified metal melt is output through an overflow port, the melt enriched with the impurity phase is discharged through an underflow port, and the whole process is continuously carried out. The technology breaks through the limitation of a traditional intermittent purification process, has the full-process continuous operation characteristic and is suitable for large-scale application of metal melt purification.

A solid-jacketed screw centrifuge for processing a suspension Su in a centrifugal field, comprising a housing (100) and a rotor (200) rotatably mounted in the housing (100), the rotor comprising at least the following: a rotatable drum (210) with axis of rotation D, wherein the drum (210) has a cylindrical section (211) and a conical section (212), a screw (230) rotatable relative to the rotatable drum (210) at a differential speed and arranged in the drum (210), an inlet pipe (217) projecting into the drum (210) and arranged concentrically to the axis of rotation D, through which the suspension Su to be processed can be directed into a separation chamber (219) of the drum (210), at least one liquid outlet (214) arranged in the cylindrical section (211) of the drum (210), and at least one solids discharge (218).which is arranged in the conical section (212) of the drum (210) and which is located in the center or near the center of the drum (210) and the solid Fe leaves the drum (210) in an axial direction or substantially in an axial direction with respect to the drum (210), wherein the inlet side of a pump (400) is attached to the solid discharge (218), the pump being designed such that a back pressure can be influenced by actuating the pump on the flow side upstream of the pump or in the drum (210).

The utility model discloses a fried food oil draining device which comprises a base and a shell, supports are arranged on the two sides of the base, the two sides of the shell are installed on the supports through connecting columns, and a conical hopper is connected with a first wave-shaped cam through a plurality of supporting rods. A driven gear is arranged outside the inner cylinder, and a plurality of guide grooves are formed in the inner wall of the inner cylinder; an oil draining basket is arranged in the inner cylinder, a plurality of guide blocks in clearance fit with the guide grooves are arranged outside the oil draining basket, and a second waveform cam is arranged on the lower portion of the oil draining basket; the device further comprises a driving mechanism, the driving mechanism comprises a motor, an output shaft of the motor is connected with a rotating shaft, the lower end of the rotating shaft is provided with a driving gear, and the driving gear is meshed with the driven gear. A composite acting force field is formed by a centrifugal field generated by rotation of the inner cylinder and dynamic shock waves formed by vertical vibration of the oil draining basket, so that oil films on the surfaces of fried foods are efficiently separated in three stages of stripping, throwing off and vibrating, the oil draining effect of the fried foods is enhanced, and the oil draining efficiency is improved.

The utility model provides a kind of hierarchical impeller for agricultural chemical wettable powder, it is related to hierarchical impeller technical field, to solve the problem that existing hierarchical impeller when using, using straight blade or forward-inclined blade, turbulent flow is generated when airflow passes, leading to coarse particle is mixed into finished product by turbulent flow entrainment, airflow passage distortion, produces the problem of tail vortex disturbance flow, including top sheet;Top sheet outside is provided with flow guide ring;Top sheet is provided with blade;Blade is set on flow guide ring;Blade bottom is provided with bottom sheet;Bottom sheet bottom is provided with fairing.The backward-inclined blade can produce more gentle airflow field and more uniform centrifugal field, improve classification accuracy, reduce the entrainment of coarse particles, the setting forty-eight groups of blades can improve classification efficiency and classification accuracy, ensure enough classification area length, increase flow guide ring, fairing at impeller outlet, improve airflow distribution, reduce inlet turbulent flow and outlet backflow, make airflow more uniform, stably pass through classification zone, improve classification accuracy.

A solid-jacket screw centrifuge for the centrifugal processing of a suspension Su in a centrifugal field, with which the suspension Su can be separated into at least one liquid phase FI and one solid phase Fe, comprising a housing (100) and a rotor (200) rotatably mounted in the housing (100), which has at least the following features: a) a rotatable drum (210) with axis of rotation D, wherein the drum (210) has a cylindrical section (211) and a conical section (212), b) a screw (230) arranged in the drum (210) which is rotatable relative to the rotatable drum (210) at a differential speed, c) an inlet pipe (214) through which the suspension Su to be processed can be conveyed into a separation chamber (216) of the drum (210), d) at least one liquid outlet (217) through which the liquid phase FI is discharged, wherein the liquid outlet (217) has at least one overflow weir (219), e) at least one solid discharge (218) through which the solid phase Fe is discharged; f) to divert a partial flow fl of the liquid phase FI, a stationary, non-rotating skimming device is arranged in the area of ​​the overflow weir (219) such that this partial flow fl of the liquid phase FI can be skimmed under pressure from the liquid phase flowing through the overflow weir before it leaves the rotating rotor.

A separator includes a frame and a separator insert exchangeably disposed on the frame. The separator insert is designed to separate a flowable suspension into at least two flowable phases of different density in a centrifugal field and forms a pre-assembled, exchangeable unit for inserting into stator units on the frame of the separator. Mutually spaced holders having stator units of the bearing devices are formed on the frame, between which holders the housing of the separator insert is non-rotatably retained such that the rotor with the drum remains rotatable. The relative position of the holders can be changed such that the separator insert can be exchanged. The housing and the holders have corresponding interlocking elements in order to non-rotatably retain the housing at the holders.

The invention relates to a solid bowl screw centrifuge for centrifugally processing a suspension Su in a centrifugal field, by means of which centrifuge the suspension Su can be separated into at least one liquid phase (Fl) and one solid phase (Fe), said centrifuge comprising a housing (100) and a rotor (200) which is rotatably mounted in the housing (100) and which comprises at least the following: a) a rotatable drum (210) having an axis of rotation (D), the drum (210) having a cylindrical portion (211) and a conical portion (212); b) a screw (230) that can be rotated at a different rotational speed relative to the rotatable drum (210) and is arranged in the drum (210); c) a feed pipe (214) through which the suspension (Su) to be processed can be directed into a separating chamber (216) of the drum (210); d) at least one liquid outlet (217) through which the liquid phase (Fl) is discharged, the liquid outlet (217) having at least one overflow weir (219); e) at least one solid matter outlet (218) through which the solid phase (Fe) is discharged; f) in order to divert a partial flow (fl) of the liquid phase (Fl), a skimming element which is stationary during operation and does not rotate is arranged in the region of the overflow weir (219) in such a way that said partial flow (fl) of the liquid phase (Fl) can be skimmed off under pressure from the liquid phase flowing through the overflow weir before said liquid phase exits the rotor which rotates during operation.

The invention provides an automatic kitchen waste treatment method based on multistage heat exchange, which comprises the following steps: acquiring solid-phase particle density distribution of a kitchen waste input flow, recording a particle settling velocity fluctuation value, and predicting solid-phase content change based on the solid-phase particle density distribution and the particle settling velocity fluctuation value; according to the distribution state of the pressure difference in the centrifugal cylinder, the adjusting direction and the adjusting amplitude of the rotating speed gradient are determined according to the mapping relation between the pressure difference distribution and the rotating speed gradient, the force field rotating inertia is dynamically updated, and centrifugal field distribution is obtained; according to the real-time change of the solid-liquid interfacial tension, the output power of the heating module is adjusted, the optimal value of the interfacial tension gradient is determined, and phase state layering is obtained; and calculating fluid shear stress required by a subsequent thermal separation stage based on fluid turbulent flow distribution and a separation purity value of a mixed region, and determining power distribution parameters of thermal separation by combining with a separation purity value of a centrifugal separation stage.

The invention relates to a centrifuge which is designed as a self-emptying separator with a vertical axis of rotation and provided to separate a product P - in particular blood - to be processed into at least two phases in a centrifugal field, of which at least one phase is a liquid phase Lp and another phase is a solid or slurry phase Sp, wherein the separator has at least the following: a rotatable centrifugal drum (1), solid outlet openings (14), an actuatable piston slide (15), wherein an actuation chamber (23) that can be filled with a fluid F is associated with the piston slide (15), and a cooling device for cooling the centrifugal drum, which is implemented in that the fluid F also simultaneously serves to cool the centrifugal drum (1), wherein one or more cooling channels (24) for cooling the centrifugal drum (1) extend(s) from the actuation chamber (23) in the drum casing (1a), which are fluidically connected to the actuation chamber (23) and through which the fluid can additionally flow, wherein at least one of the cooling channels in the drum casing also extends into a region vertically above the piston slide (15), wherein the fluid is conducted through the cooling channels (24) into a peeling disc chamber which rotates with the centrifugal drum (1) and in which the fluid is conducted out of the rotating centrifugal drum (1) through a fluid outlet by means of a peeling disc provided only for this purpose.

To provide a method for detecting lipid nanoparticles.SOLUTION: The present disclosure provides a method for detecting size, density, or both size and density of lipid nanoparticles. The detection can be performed using centrifugal field flow fractionation with a carrier solution containing monosaccharides.SELECTED DRAWING: Figure 1

The invention relates to a solid bowl screw centrifuge which is used for clarifying a flowable suspension (S) in a centrifugal field into a solid phase (SP) and one or more liquid phases (FP) and which comprises at least: a bowl (2) which is mounted for rotation about an axis of rotation (D); and a scroll (3) which is arranged in the bowl (2), is mounted for rotation about the axis of rotation and has a scroll hub (308) and a scroll flight (309) projecting radially from the scroll hub, wherein: a rotatable or non-rotatable feed pipe (5) is provided for feeding the suspension into a distributor (6) which can be rotated together with the scroll (3); the distributor (6) is used to divert the suspension from the axial direction into the radial direction and, during operation, to accelerate the suspension in the circumferential direction and to direct the suspension into a separating space (TR) between the scroll (3) rotating during operation and the bowl (2) rotating during operation; the distributor (6) is inserted into the scroll (3) and has a radial channel for distributing the flow of the suspension to be fed; the distributor (6) is designed as an exchangeable tubular distributor sleeve (61) which, for installation, can be inserted radially into a radial opening (310) in the scroll and, for removal, can be radially taken back out of the radial opening (310).

The invention relates to a separator insert (II) for separating a flowable suspension (Su) in a centrifugal field into at least two flowable phases (Lp, Hp) of different density, which separator insert forms a preassembled, exchangeable unit for insertion into a frame (I) of a separator and has at least the following: one or more components that do not rotate during operation; a rotor (2) that is rotatable about an axis of rotation (D) during operation, wherein the rotor (2) has a drum (3) that comprises one or more openings and is composed of an upper drum part (100) and a lower drum part (101), and wherein the drum (3) has a separating means that is arranged in the drum (3) and rotates with the drum (3), and a distributor, characterised in that at least two or more or all of the functional elements of the separator insert (II) are manufactured as a single-piece prefabricated unit, wherein these functional elements comprise at least the upper drum part or the lower drum part and at least the separating means.

A solid-wall screw centrifuge, which serves to clarify a free-flowing suspension S in a centrifugal field into a solid phase (SP) and into one or more liquid phases (FP) and comprises at least: a drum (2) rotatably mounted about an axis of rotation (D) and a screw (3) arranged in the drum (2) rotatably mounted about the axis of rotation, with a screw hub (308) and a screw helix (309) projecting radially from it, wherein a rotatable or non-rotatable feed pipe (5) is provided for supplying the suspension to a distributor (6) rotatable together with the screw (3), wherein the distributor (6) serves to redirect the suspension from the axial direction into the radial direction and to accelerate it circumferentially during operation and to direct it into a separation chamber (TR) between the screw (3) rotating during operation and the drum (2) rotating during operation.wherein the distributor (6) is inserted into the screw (3) and has a radial channel for dividing the flow of the suspension to be supplied, wherein the distributor (6) is designed as an interchangeable tubular distributor sleeve (61) which can be inserted radially into a radial opening (310) in the screw for assembly and can be removed radially from the radial opening (310) for disassembly.

The invention provides a cell concentration method and device. The device comprises a driving unit, a horizontally-arranged rotating plate, a hose penetrating through the rotating plate, a pipe body connected with the hose and a conveying assembly composed of a feeding pipe, a discharging pipe, a feeding valve and a discharging valve. And the control unit realizes continuous centrifugal concentration of liquid containing cells by coordinating the rotating speed of the driving unit and the working modes of the feeding valve and the discharging valve. The hose keeps an internal flow channel unobstructed through the anti-distortion characteristic of the hose in the rotating process, the hose body tends to be in a horizontal state along with rotation of the rotating plate to form a stable centrifugal field, and the conveying assembly achieves continuous separation and recovery of cell sediment through multi-mode flow speed regulation and control. According to the technical scheme, through the anti-twisting property of the hose and the combined structure of the horizontal pipe body, the device structure is simplified, and the manufacturing cost is reduced.

A centrifugal field-flow fractionation device includes: a rotor having a rotation axis, the rotor being provided to be rotatable about the rotation axis; a cover covering the rotor; a protective member arranged inside the cover to over the rotor about the rotation axis; a shock-absorbing member arranged between the protective member and the cover; and a fixing part provided in a breakable manner to fix the protective member to the cover. The rotor is arranged such that the rotation axis orients in a horizontal direction. In a case where a part of the rotor disintegrates and is brought into contact with the protective member during the rotation of the rotor, the fixing part breaks to cause the protective member and the shock-absorbing member to move with the rotor while receiving the impact of the rotor to buffer the kinetic energy of the rotor.