59 results about "One stage" patented technology

A step-type inertial focusing microfluidic chip includes an arc-shaped channel having multiple stages connected in series. At least one stage of the arc-shaped channel is separated into a plurality of sub-channels distributed along a radial direction, one end of the multistage arc-shaped channel is provided with at least one fluid inlet and an inlet channel connecting the end of to the fluid inlet. The other end of the multistage arc-shaped channel is provided with a plurality of fluid outlets and a plurality of outlet channels connecting the other end to the fluid outlets. A radius of curvature of the arc-shaped channel is 2 to 50 mm. A cross-sectional width is 50-5000 microns, the cross-sectional height is 20-2000 microns, and a thickness of a sub-channel separation wall in the arc-shaped channel having the sub-channels is 10 to 1000 microns.

This invention provides a method for controlling the weight of a solid tire carcass and its application, relating to the field of tire carcass technology. The method includes the following steps: (a) weighing the base rubber after molding and comparing it to the standard weight of the base rubber to obtain a weight difference value; (b) correcting the amount of intermediate rubber based on the weight difference value from step (a), weighing the tire carcass after molding the intermediate rubber, and comparing it to the standard weight of the intermediate rubber tire carcass to obtain a weight difference value; (c) correcting the amount of tread rubber used in one stage based on the weight difference value from step (b), weighing the tire carcass after molding the first stage of tread rubber, and comparing it to the standard weight of the first stage of tread rubber tire carcass to obtain a weight difference value; (d) correcting the amount of tread rubber used in the second stage based on the weight difference value from step (c), and molding the tread rubber in two stages to obtain the finished tire carcass. This invention, through segmented weighing and multi-stage correction, gradually offsets the weight errors in each molding stage, achieving a tire carcass weight error of ±0.1 kg, far superior to existing weight control precision.

According to various embodiments, an electronic device for performing data mapping by performing an operation of a CNN model with low power comprises: a communication interface; a processor; and a memory including a dynamic random access memory (DRAM) in which multiple full multipliers for, when executed by the processor, causing the processor to perform multi-operations enabling simultaneously performing multiple operations, while performing at least one operation related to the CNN model, and a control bit and a 2:1 selector for deactivating a second multiplier that is not required for an operation other than multiple first multipliers required for the operation are stored, wherein the at least one operation comprises the operations of: in a case where at least one input data is acquired from an external electronic device through the communication interface, when a kernel size of the at least one input data is determined to have a value greater than or equal to a preset threshold size value, automatically dividing the kernel size of the at least one input data according to a set size; when the kernel size of the at least one input data has a value smaller than or equal to the threshold size value or is automatically divided, inputting the at least one input data to at least one stage pre-stored in the memory; determining the number of the first multipliers required for a multiplication-accumulation (MAC) operation of the at least one input data in the stage, and when the number of the first multipliers is determined to be equal to or less than the number of the full multipliers, driving the control bit and the 2:1 selector to deactivate the second multiplier; and receiving a global buffer including multiple weight values from each of multiple sub-processors through the communication interface, and inputting and mapping the at least one input data to the first multipliers.

The invention discloses a stepped gradually-changing milk lining which comprises a sleeve integrally formed in an extending mode in the X direction of a longitudinal central axis, and a working cavity of the sleeve is used for containing animal nipples. The device is characterized in that a working cavity of the sleeve is divided into at least two stages of conical cavities step by step from top to bottom in the direction of the longitudinal central axis X, each stage of conical cavity is gradually narrowed from top to bottom, the taper angle of each stage of conical cavity is gradually reduced from top to bottom, and the surface of an animal nipple is attached to the inner wall of at least one stage of conical cavity in a sealed mode; the nipples with different diameter sections can be tightly attached to at least one stage of conical section through the taper decreasing design, the air leakage and blow-by risks are eliminated, the sealing performance is improved, the milking efficiency is improved, and breast health is improved.

The utility model relates to a signal source circuit and a conducted emission signal source, and the signal source circuit comprises an oscillation circuit which is used for generating an oscillation signal with a set frequency; the signal processing circuit is used for at least amplifying the signal amplitude of the oscillation signal to obtain a comb-shaped signal; the signal processing circuit comprises a first type of phase inverter and a second type of phase inverter, the input end of the first-class inverter is connected with the output end of the oscillating circuit, and the input end of the second-class inverter is connected with the output end of the first-class inverter. Oscillation signals are subjected to primary amplification through the first-class inverter, and the oscillation signals are subjected to secondary amplification through the second-class amplifier, so that signal amplitude amplification is realized, and meanwhile, the circuit structure is simplified. Moreover, the input end of the second type of inverter is connected with the output end of the first type of inverter, so that the oscillation signal returns to an initial state after two times of phase inversion, and the signal can maintain a stable oscillation state.

The utility model relates to a one-way valve type sealing piece and a straw cup, the one-way valve type sealing piece comprises a body, the body is provided with a mounting part, a sealing part and a sealing part, the protruding part is of a hollow shell wall structure with the top closed and is of an annular body with at least one stage, the diameter of the annular body is gradually reduced from bottom to top, and a water outlet hole is formed in a step of the annular body. The valve part is used for opening or closing the water outlet hole, and the valve part protrudes out of the top of the annular body and is provided with a valve plate with an expanded outer diameter; after the valve part and the protruding part are sequentially and downwards folded and compressed through the deformable folding marks, an installation part used for installing the suction pipe is formed, the suction pipe and the water outlet hole are communicated, a one-way liquid outlet channel is formed, and opening and closing of the channel are controlled by the valve plate so that sealing of the suction pipe can be achieved.

The invention discloses a multi-modal profiling flow field data acquisition device and a data acquisition method, a liquid flow maintaining box is fixed above a workbench of the data acquisition device, a profiling liquid flow table and a jet flow table which are coaxially and reversely connected are arranged in the liquid flow maintaining box, the profiling liquid flow table is located below the jet flow table, and a spiral blade is fixedly arranged on the upper surface of the profiling liquid flow table; at least one stage of flow channel is arranged in the jet flow table, each stage of flow channel extends to the circumferential direction of the jet flow table to form a jet flow opening, a hollow sliding rod is arranged in a center hole of the jet flow table, the upper end of the sliding rod is connected with a liquid supply device through a pipeline, the middle is dynamically sealed with the upper surface of the jet flow table, and the lower end is in threaded connection with the jet flow table. At least one group of liquid outlets are formed in the lower part of the sliding rod, a test plate is fixedly mounted in the liquid flow maintaining box, two groups of pressure sensors are arranged at the joints of the test plate and the left and right ends of the liquid flow maintaining box, and nine or eight distance measuring sensors are uniformly arranged on the test plate. The device can realize a multi-level and multi-mode jet scene.

A phototherapy device (200) is provided with a flash discharge tube (1), and a control device (220) that controls the light emission of the flash discharge tube (1). The flash discharge tube (1) is provided with: a light-transmissive envelope (10) in which an inert gas is enclosed; an anode (20); and a cathode (30). The envelope (10) includes: a quartz glass tube (11); a borosilicate glass material (12) that seals the anode (20); a borosilicate glass material (13) that seals the cathode (30); an intermediate glass material (14) that joins the quartz glass tube (11) and the borosilicate glass material (12); and an intermediate glass material (15) that joins the quartz glass tube (11) and the borosilicate glass material (13). Each of the intermediate glass materials (14, 15) is a glass material consisting of one stage or two stages. The tip portion of the cathode (30) is positioned inside the quartz glass tube (11). The cathode (30) has a sintered pellet (34). The sintered pellet (34) overlaps the intermediate glass material (15) in a side view.

The application provides a sinking cup mouth column foundation platform construction method, which comprises the following steps: installing a concrete support device on a platform concrete reinforcing bar to form an inner support formwork; pouring concrete to the top surface of the platform to complete the one-time pouring of the sinking cup mouth foundation platform; and disassembling the concrete support device to complete the pouring of the sinking cup mouth foundation platform. The concrete support device is installed on the platform concrete reinforcing bar to form the inner support formwork, which can cooperate with the platform formwork to pour the concrete, so that the sinking cup mouth foundation platform is poured once, that is, the pouring is realized in one stage. Compared with the two-stage pouring in the prior art, the construction period is saved, and the problem of the three-time pouring of the sinking cup mouth column foundation platform concrete in the prior art is solved, and the construction speed is improved.

The hydraulic wrench with the counting function comprises a hydraulic wrench body, the hydraulic wrench body comprises a hydraulic rod, a mounting groove is formed in the inner wall of one side of the hydraulic wrench body, and a fixing seat is fixedly connected to the inner wall of one side of the mounting groove. One end of the fixed seat is sequentially provided with a fifth-stage turntable, a fourth-stage turntable, a third-stage turntable and a second-stage turntable from left to right, annular tooth grooves are formed in the circumferential inner walls of the first-stage turntable, the fifth-stage turntable, the fourth-stage turntable, the third-stage turntable and the second-stage turntable, inner discs are arranged in the fifth-stage turntable, the fourth-stage turntable, the third-stage turntable and the second-stage turntable, a ratchet wheel groove is formed in the circumferential inner wall of the first-stage turntable, and a ratchet wheel groove is formed in the circumferential inner wall of the second-stage turntable. The circumferential inner walls of the fifth-stage rotating disc, the fourth-stage rotating disc, the third-stage rotating disc, the second-stage rotating disc and the first-stage rotating disc are each provided with a shifting clamping groove, and a groove is formed in one side of the inner disc. The use times of the hydraulic wrench can be counted, so that a hydraulic handle is prevented from being used excessively, and the hydraulic handle can be maintained regularly.

This disclosure provides a cooling device for a scanning magnetic detection system, including a first support plate; a first gas supply assembly and a second gas supply assembly mounted on the upper side of the first support plate; a first enclosed chamber disposed on the lower side of the first support plate and surrounded by the first support plate, a first chassis opposite to the first support plate, and a first cylinder sealed between the first support plate and the first chassis; at least one stage of series cooling assembly disposed in the first enclosed chamber, each stage of series cooling assembly being configured to receive compressed cooling gas from the first gas supply assembly, and to cool the at least one stage of series cooling assembly step by step through the adiabatic expansion process of the compressed cooling gas; and a terminal cooling assembly disposed inside the first enclosed chamber and located below the last stage of series cooling assembly to further cool by utilizing the throttling process of circulating cooling gas from the second gas supply assembly.

A method for drying panels in a drying device including a first stage and a second stage, wherein the two stages each have levels and the panels are in each case laid on surfaces formed level-by-level and, in the respective levels of the two stages, are guided through the drying device, wherein the panels in the first stage are brought into contact with drying air of a high temperature and are dried, and in the second stage are dried with drying air of a less high temperature, is characterized in that at least in one of the two stages warm air is supplied to the panels from a means for recovering heat, wherein the means is arranged outside the two stages and wherein the warm air is supplied directly to the at least one stage.

The utility model provides a pin connection structure applied to a multistage lead screw, which comprises at least one stage lead screw, a first-stage nut, a first-stage sleeve and a second-stage sleeve, the first-stage lead screw is in threaded connection with the first-stage nut, the second-stage sleeve is sleeved on the outer side of the first-stage lead screw and the first-stage nut, and the second-stage sleeve is sleeved on the outer side of the second-stage nut. The first-stage sleeve is arranged on the outer side of the second-stage sleeve in a sleeving mode, the first-stage sleeve is connected with the second-stage sleeve through a key groove, and the first-stage nut is connected with the second-stage sleeve through a pin; when the first-stage lead screw rotates relative to the first-stage sleeve, the first-stage nut moves in the axial direction of the first-stage lead screw, and the first-stage nut pushes the second-stage sleeve to stretch out and draw back in the axial direction of the first-stage lead screw. According to the utility model, a pin structure is adopted to replace threaded connection, so that the problem of looseness under vibration or impact load is effectively avoided, and the connection stability is improved.

The invention discloses a carrier rocket and an attitude angle control method thereof. The carrier rocket comprises a fairing; the N stages of cabin sections are arranged at the rear end of the fairing, each stage of cabin section is provided with an engine, and the engine is configured to provide pushing force for the carrier rocket in the axial direction of the carrier rocket; one end of the mass center adjusting assembly is connected with a cabin section body of at least one cabin section from the second-stage cabin section to the Nth-stage cabin section, and the other end of the mass center adjusting assembly is connected with an engine corresponding to the at least one cabin section; the mass center adjusting assembly is configured to adjust the mass center position of the engine corresponding to the mass center adjusting assembly. And the controller is configured to control the mass center adjusting assembly to adjust the mass center position of the corresponding engine so as to control the flight attitude angle of the carrier rocket by adjusting the mass center position of the carrier rocket. According to the technical scheme, the attitude control requirement of a large carrier rocket can be met.

The present disclosure is a kind of buffer multistage servo hydraulic cylinder, at least including two hydraulic components, with: at least including one stage cylinder (11), two-stage cylinder (12), oil storage device (13) hydraulic cylinder body (1), two-stage cylinder (12) is arranged in one stage cylinder (11) and is communicated with it, oil storage device (13) is arranged in one stage cylinder (11) one end and is communicated with it;Servo motor (2) is arranged in one side of hydraulic cylinder body (1) and is connected with hydraulic cylinder body (1) by connecting flange (21);Oil pump (3) is arranged in one end of servo motor (2) and is connected with servo motor (2) by shaft coupling (31);At least a part of buffer device (4) is arranged in hydraulic cylinder body (1) and is located in one stage cylinder (11) one end;The buffer multistage servo hydraulic cylinder provided by the application can be used in multiple pressure chambers, high-precision position control and speed regulation are realized by servo motor, and the hydraulic cylinder is protected by buffer device.

A gear-based transmission assembly (1) having a thermally efficient planetary gear train includes a box-shaped body (2), the box-shaped body (2) includes a sun gear (4) that rotates around a main shaft (A), at least two planetary gears (5) that mesh with the sun gear (4) and are supported by planetary carriers (6) in rotation around the main shaft (A) and around each axis (R) parallel to the main shaft, at least one planetary stage (3) that meshes with the at least two planetary gears (5) and has internally toothed ring gears (7) integrally associated with the box-shaped body (2), and at least Each gear is for housing one stage (8), and each reduction stage (8) includes a drive pinion (9) that rotates around a primary shaft (A1) substantially coinciding with the main shaft (A), at least two first gears (10) that rotate around each secondary shaft (A2) substantially parallel to the primary shaft (A1) and mesh with the drive pinion (9), at least two second gears (11) each integral with the corresponding first gear (10) in rotation around each secondary shaft (A2), and a transmission pinion (12) that rotates around the main shaft (A) and meshes with at least two second gears (11) to transmit the rotation around the main shaft (A) to the sun gear (4).

Actuator (2) for an actively adjustable roll stabilizer (1) of a motor vehicle, comprising a housing (5) that accommodates a drive unit (6) and a multi-stage planetary gear (7) driven therein, wherein each stage of the planetary gear (7) comprises a sun gear (11, 21, 31), at least one planet gear (12, 22, 32) and a ring gear, and wherein in each stage the at least one planet gear (12, 22, 32) is in meshing engagement with the sun gear (11, 21, 31) of the same stage and the ring gear of the same stage, wherein the ring gear of at least one stage of the planetary gear (7) is formed as part of the housing (5), characterized in that the housing (5) is designed in multiple parts by comprising several axially adjacent, interconnected housing sections (5a, 5b, 5c), wherein at least two of the housing sections (5b, 5c) each comprise a ring gear of a planetary stage train.

The invention discloses a line dividing block and a self-adaptive clamping device, and belongs to the technical field of machining, the line dividing block comprises a main body seat and a grading clamp body, and the main body seat is used for being fixed to a clamping area; the grading clamp comprises multiple stages of clamp bodies, each stage is provided with a plurality of clamp bodies, the face, opposite to the main body base, of each clamp body is a clamping face, and the multiple clamp bodies of one stage are rotationally connected to the main body base. In the plurality of clamp bodies of the adjacent stages, the adjacent corresponding clamp bodies are rotationally connected and are in contact with the clamping surfaces of the clamp bodies of the n stages; the plier bodies of the same stage are spaced and independent from one another, and the clamping faces of the plier bodies of the N stages make contact with the outer surface of a workpiece to be clamped, so that a plurality of contact points are formed. The self-adaptive clamping device comprises a chuck and a plurality of row-dividing blocks, the row-dividing blocks are installed on the chuck at intervals, and the positions of the grading clamps of the row-dividing blocks are opposite. The device can adapt to different special-shaped workpieces, automatic adjustment and matching are achieved along with the special-shaped workpieces, and automatic matching of the shapes of the special-shaped workpieces is achieved.

The invention provides a data processing method and device, electronic equipment and a storage medium. In a scene of performing multi-stage processing on input data, for a processing task of an Nth stage in the multi-stage processing on the input data, in response to the condition that an Nth node for processing the processing task of the Nth stage is in an overload state, whether a non-Nth node for processing a processing task of a non-Nth stage is in a non-overload state is detected. And in response to the non-Nth node being in the non-overload state, scheduling the processing task of the Nth stage to the non-Nth node for processing. Therefore, the nodes which are used for processing the processing tasks of one stage and are in the non-overload state can process the processing tasks of the other stage, system resources of the nodes which are used for processing the processing tasks of the other stages and are in the non-overload state can be fully utilized, and the overall system resource utilization rate of the data processing system can be improved.

The invention relates to a microbubble generating device, in particular to a microbubble generator and washing equipment, and aims to solve the technical problems that an existing microbubble generator is complex in structure and high in manufacturing cost. In order to achieve the purpose, the microbubble generator comprises an integrated spraying pipe, at least one stage of diameter-reducing conical part is arranged in the integrated spraying pipe in the water flow direction, and a spraying hole is formed in the downstream end of the at least one stage of diameter-reducing conical part; the spraying holes are configured to enable water flow in the at least one-stage diameter-reducing conical part to generate negative pressure in the integrated spraying pipe after being sprayed out of the spraying holes, and an air inlet is formed in the pipe wall of the integrated spraying pipe; the fixing sleeve is fixedly connected with the integrated spray pipe, and an air suction port is formed in the fixing sleeve, so that external air can be sucked into the integrated spray pipe through the air suction port and the air inlet in sequence by means of negative pressure and is mixed with water to generate bubble water; and the bubbler is configured to enable the bubble water to form micro-bubble water when the bubble water flows through the bubbler.

A turbomolecular vacuum pump (1) comprising a stator (2), a rotor (3) configured to rotate within the stator (2), the rotor (3) comprising at least one stage of blades (9), an inner cylindrical skirt (14) and at least one outer cylindrical skirt (15), the inner and outer cylindrical skirts (14, 15) being coaxial and configured to rotate relative to the respective Holweck stators of the stator (2), characterized in that the inner cylindrical skirt (14) is made of a material with a thermal conductivity greater than that of the material forming at least one outer cylindrical skirt (15). Figure 1

The utility model discloses a lifting mechanism and a roller changing system, and belongs to the technical field of battery production. The lifting mechanism comprises a tray suitable for being arranged opposite to the roller in the vertical direction, and a groove used for containing the roller is formed; the hydraulic cylinder comprises a cylinder barrel, at least one stage of moving cylinder slidably mounted in the cylinder barrel and a piston rod slidably mounted in the innermost stage of moving cylinder, the cylinder barrel is suitable for being mounted on the roller press, the tray is supported on the piston rod, and every two adjacent stages of moving cylinders are in sliding fit; the hydraulic cylinder is configured to drive the moving cylinder and the piston rod to reciprocate by injecting oil into or returning oil to the cylinder barrel so as to drive the tray to ascend and descend. By means of the roller changing mode design that the hydraulic cylinder drives the tray to ascend and descend, uncertainty and potential accident risks of manual operation are reduced, safety of roller changing operation is improved, roller changing time is greatly shortened, production line rhythm and production capacity are improved, input of manpower and material resources is greatly reduced, and roller changing cost is reduced.

The invention relates to a processing station (10) designed and configured to automatically remove a wishbone (11) from a poultry carcass (12), or parts thereof, still comprising at least the wishbone (11), a keel bone, tendons and / or ligaments connected to the wishbone (11), as well as inner and outer fillets, comprising a carriage (14) which can be moved back and forth along guide rods (13) in a linear manner along the transport direction T of the poultry carcasses (12) to be processed, at least one drive means (15) for the carriage (14), a frame (16) which is arranged on the carriage (14) such that it is movable relative to same at least in one stage transversely to the movement direction T of the carriage (14) along the transport direction T, at least one drive means (17) for the frame (16), and at least one processing tool (18) which is arranged in the frame (16) and can move, together with the frame and / or relative to same, transversely to the transport direction T of the carriage (14), and which is characterized in that the drive means (15) for the carriage (14) is designed and configured exclusively for driving the carriage (14) and comprises at least one servo drive (19). The invention further relates to a device (44) for concurrent tool positioning with a processing station (10) of this type and to a method for automatically removing wishbones (11) from poultry carcasses (12).

The heat source unit includes a refrigerant control valve and a controller. When the opening degree of the refrigerant control valve changes, the high pressure of the refrigeration cycle changes. The controller adjusts the opening degree of the refrigerant control valve in stages. The amount of change in the opening degree of the refrigerant control valve in one stage is called the unit change. The physical quantity representing the high pressure of the refrigeration cycle is called the high pressure index. The controller ensures that the unit change when the high pressure index is higher than the reference value is less than the unit change when the high pressure index is lower than the reference value.

The invention provides a two-stage or multi-stage rotor interstage connecting structure of a gas turbine, and belongs to the technical field of gas turbines, the two-stage or multi-stage rotor interstage connecting structure comprises two-stage or multi-stage rotors, each stage of rotor comprises a rotor blade and a wheel disc, the wheel discs of the two adjacent stages of rotors are respectively provided with an internal spline and an external spline, and the internal spline and the external spline are connected with each other. The two adjacent stages of rotors are connected through the internal spline and the external spline, the opposite ends of the two adjacent stages of rotors are provided with centering expansion sleeve assemblies, the axial and radial positions of wheel discs of the two adjacent stages of rotors are adjusted through the centering expansion sleeve assemblies, and the other ends of the two adjacent stages of rotors are provided with auxiliary centering spigot structures. And two adjacent stages of rotors are locked and fixed through a compression nut matched with the wheel disc of one stage of rotor. The problems of wheel disc strength reduction, space assembly limitation, positioning and centering between rotors, low bearing capacity and the like caused by tapping can be solved.

The present invention relates to a method for producing single crystal rods, particularly silicon single crystal rods, by means of a pulling device (110) of a crystal pulling apparatus (100), wherein the crystal pulling apparatus (100) defines a pendulum rotation center D, the defined stationary axis of the crystal pendulum extends substantially along and through the height axis, wherein, during at least one pulling process, a substantially progressive single crystal rod segment having an associated substantially progressive specified single crystal length is pulled from the melt according to a configurable variable target pulling speed of the pulling device (110) via a control device (120) to obtain a single crystal rod. During at least one stage of the pulling process, the target pulling speed is controlled and variablely set via controlled actuation of the pulling device (110) and the control device (120), such that after each change in the setting of the target pulling speed, in order to continue the pulling process, the maximum pendulum deflection of the asymptotic single crystal rod segment based on the stationary axis of the crystal pendulum develops into a function of the asymptotic pulling time and / or the asymptotic single crystal length, the amplitude of which and / or the difference in amplitude relative to the continuous amplitude decreases at least during the stage.

The embodiment of the utility model provides a bolt connector, and relates to the field of precast pile foundations. The bolt connector comprises a buckling cylinder, a connector base, a bolt and a sleeve, the buckling cylinder comprises at least two elastic petals and at least two clamping tables, the at least two elastic petals are arranged at intervals and arranged at the head end of the bolt in a sleeving mode, and the at least two clamping tables are arranged at the ends of the at least two elastic petals in a one-to-one correspondence mode; at least two stages of bosses are formed on the inner side wall of the connector base and used for dividing an inner cavity of the connector base into a guide-in cavity and a containing cavity, a concave part is formed in the plug pin, the sleeve is connected to the tail end of the plug pin, and the plug pin is used for penetrating through the guide-in cavity to enter the containing cavity under the action of external force. And the at least two clamping tables are matched with the sunken part and the at least two stages of bosses at the same time. During working, at least two stages of bosses are formed, so that the clamping table can be propped between the concave part and one stage of boss even in an inclined state, the clamping table is further prevented from being separated from the connector seat in the inclined state, and the connection stability is further guaranteed.

The application provides a multi-stage impeller assembly, which comprises a shell, a base, a motor unit, a guide air unit and at least one stage of dynamic and static blade units, the motor unit is fixed to the base, the shell is fixed to the base, the dynamic and static blade units comprise a dynamic blade impeller and a static blade impeller, the dynamic blade impeller and the static blade impeller are coaxially arranged, the dynamic blade impeller is fixed to the output shaft of the motor unit, the outer wall of the static blade impeller is limitingly fixed to the inner wall of the shell, the outer wall of the guide air unit is limitingly fixed to the inner wall of the shell, along the air flow direction, the air flow sequentially passes through the guide air unit, the dynamic blade impeller and the static blade impeller, and the multi-stage dynamic and static blade units are coaxially arranged in sequence. The application also provides a dust collector with the multi-stage impeller assembly. The application has the characteristics of large air volume, small size, large power mass ratio, small wind noise, improved air flow vacuum degree and improved fan efficiency.

The application discloses a cantilever rotor assembly and a design method thereof and an industrial exhaust turbine, and solves the technical problems of long rotor, large weight and high production cost of the existing industrial exhaust turbine. The cantilever rotor assembly comprises a main shaft, a first supporting bearing, a second supporting bearing, a counterweight, a wheel disc and at least one stage of moving blades; one end of the main shaft is connected with an external unit, the first supporting bearing is installed on the main shaft close to one end of the external unit, the other end is installed with the wheel disc, and the second supporting bearing is installed on the main shaft close to one end of the wheel disc; the counterweight is sleeved on the main shaft and located between the first supporting bearing and the second supporting bearing, so that the axial distance S between the center of gravity of the rotor assembly and the center of the second supporting bearing is greater than or equal to d / 2; the wheel disc is coaxially installed with the main shaft; each stage of moving blades comprises a plurality of blades which are uniformly distributed on the outer circumference of the wheel disc; and the two adjacent stages of moving blades are arranged side by side and are provided with an axial gap. The rotor assembly has a compact structure and a relatively light weight.

The dispenser is rectangular with two windows in the horizontal cylindrical base. The dispenser opens in two stages: the cylindrical base in one stage, and the entire front in the other stage. The dotted lines are disclaimed from the design. 1.1) Perspective; 1.2) Front; 1.3) Right side; 1.4) Left side; 1.5) Top; 1.6) Bottom; 1.7) Perspective; 1.8) Open perspective; 1.9) Open front; 1.10) Wide-open perspective; 1.11) Wide-open front; 1.12) Front view with disclaimer; 1.13) Wide-open front view with disclaimer; 1.14) Wide-open perspective with disclaimer