408 results about "Internal rotation" patented technology

The utility model relates to the technical field of vacuum feed-through, and discloses a vacuum hollow magnetic coupling feed-through device used for a magnetron sputtering coating machine, which comprises an isolation cover, a magnetic coupling feed-through device and a magnetic coupling feed-through device, the first end of the hollow main shaft extends into the isolation hood; the outer magnetic rotor surrounds the outer side of the isolation cover; the inner magnetic rotor is connected to the outer side of the first end of the hollow main shaft; the input wheel is connected with the outer magnetic rotor and is used for being connected with external driving equipment; according to the utility model, the hollow main shaft is adopted, while magnetic coupling torque transmission is realized, the hollow main shaft rotates in the vacuum chamber, and devices which do not need to be rotated, such as wiring and installation of manipulators, can be accommodated in the hollow main shaft, so that the feed-through structure is endowed with more functional richness, flexibility and various possibilities; flanges at two ends of the isolation cover facilitate connection of an external device outside the vacuum chamber.

The invention relates to a self-adaptive offshore wind turbine jacket foundation with a rotary energy dissipation inner jacket and an energy dissipation method. A jacket foundation body comprises an external supporting structure and an internal rotary structure. The external supporting structure comprises a plurality of main stand columns and outer-layer cross transverse frames, one main stand column is fixed to the surface of each pile leg, the number of the main stand columns is matched with that of the pile legs, and the adjacent main stand columns are connected through the outer-layer cross transverse frames. The internal rotating structure comprises a plurality of rotating stand columns and a plurality of inner-layer cross transverse frames, one rotating stand column is rotatably arranged on the surface of each pile leg and located on the inner side of the main stand column, the number of the rotating stand columns is matched with that of the pile legs, the bottom edge of each inner-layer cross transverse frame is fixed to the corresponding rotating stand column, and the vertex angle faces the center of the internal rotating structure. Two inner-layer cross transverse frames are mounted on each rotating upright post; when the adjacent rotating stand columns are rotated, the vertex angles of the two adjacent inner-layer cross transverse frames located on the rotating stand columns can be spliced to form connection. Automatic splicing protection under conventional water flow disturbance energy consumption and extreme weather is achieved, and the disaster resistance and the self-adaption performance of the foundation structure are effectively improved.

The invention belongs to the technical field of robots, and provides a hip joint exoskeleton and a walking assistance control method.The hip joint exoskeleton comprises three active driving units, and a hip joint exoskeleton sagittal plane driving unit is used for achieving forward flexion / backward extension of a human hip joint; the hip joint exoskeleton coronal plane driving unit is used for realizing human hip joint adduction / abduction; the hip joint exoskeleton horizontal plane driving unit is used for realizing inward rotation / outward rotation of the hip joint of the human body; the hip joint exoskeleton sagittal plane driving unit, the hip joint exoskeleton coronal plane driving unit and the hip joint exoskeleton horizontal plane driving unit are connected through the remote rotating center mechanism, so that a rotating plane corresponding to the horizontal plane driving unit is aligned with a hip joint rotating center through a virtual axis. The hip joint exoskeleton is compact in structure and saves space. According to the control method, when the user wears the exoskeleton to walk, the exoskeleton can accurately assist the walking of the user without time delay.

The invention discloses a Y-shaped filter device for heating and ventilation pipelines, and belongs to the field of filters, the Y-shaped filter device comprises a pipe body, a filter cartridge and a support seat, the pipe body is of a Y-shaped structure, the upper end of the filter cartridge is open and is mounted in a filter chamber, a rotating shaft is arranged in the filter cartridge, the rotating shaft is fixedly connected with the filter cartridge through a plurality of connecting rods, and a paddle is arranged at the upper end of the rotating shaft; the lower end of the rotating shaft penetrates through the filter cartridge and is rotatably connected with the supporting seat through a bearing. The filter cartridge rotates in the filter chamber, so that each area in the circumferential direction of the filter cartridge is in uniform contact with a medium, and the problem of local blockage caused by concentrated accumulation of impurities in a traditional fixed filter cartridge is avoided; besides, in the rotating process of the filter cartridge, the washing direction of the medium to the surface of the filter cartridge is continuously changed along with the rotation of the filter cartridge, impurities are difficult to adhere and harden at a single position, the blocking period of the filter cartridge is effectively prolonged, long-term smoothness of a filter channel is ensured, and the stability of the filtering efficiency of the filter cartridge is improved; and the problems of system flow reduction, pressure loss increase and the like caused by blockage are reduced.

The invention relates to the technical field of aramid fibrid production, in particular to an aramid fibrid production device and a use method thereof. The aramid fibrid production device comprises a precipitation machine and a cleaning machine, the cleaning machine comprises a tank body with an opening in the top end, a first annular flange extending outwards is arranged at the top of the tank body, a first filter cylinder is arranged on the upper portion in the tank body, a second filter cylinder is rotationally sleeved with the first filter cylinder, and a barrel-shaped filter bag is sleeved with the second filter cylinder; the upper end face of the second filter cartridge extends out of the first filter cartridge and then is connected with a gear ring, a rotating shaft and a motor for driving the rotating shaft to rotate are rotationally arranged on the first annular flange, a gear meshed with the gear ring is arranged on the rotating shaft, and when the second filter cartridge rotates, filter holes of the first filter cartridge and the second filter cartridge can be mutually staggered to block or communicate. The aramid fibrid stock solution is obtained through the precipitation machine, then the aramid fibrid stock solution is efficiently cleaned through the cleaning machine, and finally the high-quality aramid fibrid is obtained.

The utility model discloses a slitting device for wide cloth, which comprises a rack, a slitting part and a tensioning part, the slitting part is arranged at the top of the rack, the slitting part is provided with a support frame fixedly arranged at the top of the rack, a lifting frame is vertically arranged in the support frame in a sliding manner, a slitting roller is rotatably arranged in the lifting frame, and the tensioning part is arranged at the top of the rack. The top of the supporting frame is provided with an air cylinder, the bottom of the air cylinder is fixedly connected with the top of the lifting frame, the tensioning part is arranged in the machine frame and provided with a guide roller fixedly arranged at the top of the machine frame and a transmission frame vertically arranged in the machine frame in a sliding mode, and the bottom of the lifting frame is fixedly provided with a driving frame. And a gear is rotationally arranged at the bottom of the rack. The slitting part and the tensioning part are arranged, the lifting frame can move up and down to drive the driving frame to move up and down and drive the gear to rotate, and therefore the transmission frame is driven to move up and down synchronously and is matched with the guide roller to conduct tensioning operation on wide cloth.

The utility model discloses a glaze pouring device for ceramic preparation, and belongs to the technical field of ceramic preparation. A glaze pouring device for ceramic preparation comprises a glaze pouring box, a bearing plate and a filling box, a discharge pipe is arranged on one side of the glaze pouring box, a mounting box is fixedly mounted in the glaze pouring box, the bearing plate is rotatably mounted in the mounting box through a rotating shaft, and a leakage net is arranged on the inner side of the glaze pouring box at the bottom of the bearing plate. A filling box is fixedly mounted at the rear end of the glaze pouring box, and a rotating shaft is rotationally mounted in the filling box; according to the ceramic glaze pouring device, the first motor, the rotating shaft, the bearing plate and the discharging pipe are matched with one another, so that the ceramic glaze pouring process is more convenient, manual operation is reduced, the working efficiency in the glaze pouring process is improved, and the production cost is reduced. The problems that in the prior art, when ceramic is glazed, glaze needs to be manually and slowly poured on the surface of the ceramic, efficiency is low, and labor intensity is increased are solved.

The utility model relates to the field of automatic winding machines, in particular to an air suction cleaning device of an automatic winding machine, which comprises a supporting workbench, a winding machine body, a blanking funnel, an assembly limiting ferrule, a spiral fixing sleeve, a suction pipe and an air suction device, a discharging hopper is fixedly welded to the bottom end of the fixed assembling plate, an assembling limiting ferrule is fixedly installed in the L-shaped assembling plate, a spiral fixing sleeve is fixedly welded to one side of the assembling limiting ferrule, a suction pipe is rotationally installed in the spiral fixing sleeve, and an air suction device is arranged in the air door. The air suction opening and the air door are arranged at the bobbin yarn staying position of the assembly and are connected to a machine air suction device, during production, the air door is opened for primary air suction when the bobbin yarn falls down, sundries such as flyings and disordered threads are sucked into an air suction cleaning system, the air door is closed after the bobbin yarn falls down, the flyings or the disordered threads can be prevented from being brought out by sucked yarn heads or yarn tails, and the production efficiency is improved. Meanwhile, wind consumption can be reduced, and resource waste is reduced.

The utility model provides a wheel type sand washing device for fine sand preparation, which comprises a fixing seat, a reinforcing seat is fixed on the fixing seat, a supporting seat is fixed on the reinforcing seat, a mounting seat is fixed on the supporting seat, a rotating column is rotatably mounted on the mounting seat, a supporting disc is fixed at one end of the rotating column, and the supporting disc is fixed at the other end of the rotating column. A supporting disc is arranged on the fixing base, a supporting rod is welded to the supporting disc, an impeller is fixedly installed at one end of the supporting rod, a driving motor and a water inlet pipe are fixedly installed on the side of the fixing base, and a stirring plate is installed on the driving motor and movably installed in the fixing base. When the wheel type sand washing device for fine sand preparation is used, a stirring plate rotates in the fixing base, the stirring plate bidirectionally rotates to push fine sand at the bottom of the fixing base to move towards the two sides to be evenly distributed, and blockage caused by long-time accumulation at the center position is avoided; and in addition, water at the bottom is stirred by the stirring plate to roll upwards to complete repeated flushing of sand and stones at the top.

The utility model relates to the technical field of milling cutter feeding, in particular to an automatic feeding arrangement device for milling cutter production, which overcomes the defects of milling cutter feeding in the prior art and comprises a base, a top plate is fixedly connected to one side of the base, a first motor is fixedly connected to one side of the base, a first rotating rod is arranged on one side of the first motor, and a second rotating rod is arranged on the other side of the first rotating rod. The first rotating rod is rotationally connected with the interior of the base, a second rotating rod is rotationally connected with the interior of the base, a second belt wheel is fixedly connected to the surface of the second rotating rod, a first belt wheel is fixedly connected to the surface of the first rotating rod, a first belt is arranged on the surfaces of the first belt wheel and the second belt wheel, and a conveying belt is arranged on the surfaces of the first rotating rod and the second rotating rod. The conveying belt is used for conveying materials, a machined part is arranged on one side of the conveying belt, a second motor is fixedly connected to one side of the top plate, and a fourth rotating rod is arranged on one side of the second motor.

The utility model discloses a multi-wire-coil synchronous rotation wire leading mechanism, which comprises a base, a wire coil cylinder and a guide part, a wire leading frame is arranged at the top of the base, the wire coil cylinder is arranged at the top of the base, the guide part is arranged at the top of the wire coil cylinder, and the guide part is provided with a rotating shaft which is vertically and rotatably arranged at the top of the wire coil cylinder. A connecting frame is arranged on the side face of the rotating shaft, a rotating frame is rotationally arranged in the connecting frame, a guide wheel a is rotationally arranged in the rotating frame to guide the trend of a copper wire, a limiting frame is arranged on the side face of the rotating shaft, and a sliding block is transversely arranged in the limiting frame in a sliding mode. By arranging the wire coil cylinder and the guide part, when the wire drawing machine starts to work, the sliding block is pushed to move through tension generated by pulling a copper wire, so that the copper wire can pass through a gap between the sliding block and the rotating shaft, and after the wire drawing machine stops working, due to the fact that the tension of the copper wire disappears, the spring can push the sliding block to move to clamp the copper wire. And slipping is prevented.

This utility model provides a rapid demolding device for gypsum products, belonging to the field of gypsum products. It includes a mounting box, a motor, and a sliding rod. A top plate is fixedly mounted on the top of the mounting box via a column. An upper template is movably mounted on the bottom of the top plate. An mounting sleeve is fixedly mounted inside the mounting box. A threaded rod is rotatably mounted inside the mounting sleeve. A moving rod is threadedly mounted on the outer side of the threaded rod. A roller is rotatably mounted on the top of the moving rod. This utility model uses the rotation of the motor output to drive the threaded rod to rotate synchronously inside the mounting sleeve. Through the threaded engagement between the threaded rod and the moving rod, the moving rod moves, causing the roller to press against the movable groove. This causes the wedge block to press upwards, and the moving rod to move the pressing plate upwards, pushing the gypsum product inside the mounting box, thereby enabling the demolding operation.

The invention provides a non-continuous controllable blanking system, and relates to the technical field of blanking control, the non-continuous controllable blanking system comprises a blanking bin, the bottom of the blanking bin is of an opening structure, a vertical conveyor is fixedly arranged on the front side of the top of the blanking bin, and the vertical conveyor is communicated with the interior of the blanking bin; four sets of synchronous shafts are rotationally arranged in the discharging bin, synchronous wheels are fixedly arranged on the two sides of the outer portion of each synchronous shaft, and two sets of synchronous belts are rotationally arranged outside the synchronous wheels on the two sides. Feeding frames are fixedly arranged outside the two sets of synchronous shafts at equal intervals in a surrounding mode, and feeding trays are arranged in the feeding frames. According to the blanking system, dual-mode feeding and discontinuous controllable conveying are achieved, the two modes of vertical hopper short-range feeding and far-end hopper long-range feeding are supported, separation and reunion of a friction wheel are controlled through an electric cylinder, the conveying path can be flexibly switched, meanwhile, the intermittent meshing design of an intermittent gear and a linkage gear is matched, and the conveying efficiency is improved. Sequential matching of feeding tray switching and material conveying is achieved, and the discontinuous and controllable blanking effect is achieved.

The utility model relates to the technical field of stratum construction, in particular to a high-precision pin shaft polishing device which comprises a workbench, the upper surface of the workbench is fixedly connected with a rotating support, the outer ring part of the rotating support is fixedly connected with an outer cylinder, and the outer cylinder is rotationally connected with the workbench through the rotating support. The utility model discloses a pin shaft burr grinding device, which comprises a workbench, a rotating shaft is arranged on the workbench, a cover body is fixedly connected to the upper surface of the workbench, a lifting mechanism is fixedly connected to the upper surface of the cover body, and the lifting mechanism comprises a limiting frame and a connecting frame, in the pin shaft burr grinding device, the rotating shaft drives a hole frame to rotate, grinding materials are in contact with a pin shaft in the hole frame, and burrs on the surface of the pin shaft are ground; a large-size pin shaft can be placed in the fixing frame, the pin shaft can be fixed by rotating the fastening bolt, at the moment, the inner cylinder drives the grinding material to grind the pin shaft, synchronous grinding of the multiple pin shafts is achieved, and the grinding and polishing efficiency of the device is improved.

Gas turbine engines and methods of securing rotating components therein with a threaded nut. The threaded nut is configured to releasably couple with a shaft to secure a rotating component thereon. The threaded nut may include a body having a bore extending therethrough defined by inner surfaces thereof, threads protruding from the inner surfaces configured to mate with threads of the shaft, and a nut face on an end of the body configured to contact a contact surface of the rotating component or another component in contact therewith and apply an axial load thereon that is sufficient to maintain a fixed axial position of the rotating component. The nut face includes a contoured surface configured to bias the axial load toward a radially outer portion of the nut face to reduce loading on a first of the threads of the shaft closest to the contact surface.

The invention relates to the technical field of water treatment, and discloses water treatment equipment with an impurity removal function, which comprises a water tank, and further comprises a water outlet arranged on the right side of the water tank, supporting legs arranged at the bottom of the water tank, two net cages arranged in the water tank, and a rotating mechanism driving the net cages to revolve around the rotating mechanism through a transmission shaft, meanwhile, the net cage is driven to reciprocate up and down along with a first sliding block by means of a second sliding rail with low left and high right at the top of an arc-shaped sleeve, and the net cage is driven to rotate by cooperating with meshing of a gear ring on a circular ring and a gear on a transverse shaft, so that the effect of omnibearing and dynamic contact between activated carbon and water in the water tank is achieved; the problems that a water flow channel is easily formed in a traditional fixed bed activated carbon filter layer and part of activated carbon is idle are effectively avoided, the adsorption efficiency and the adsorption uniformity of the activated carbon on impurities such as organic pollutants, heavy metal ions and peculiar smell substances in water are further improved, it is ensured that each part of the activated carbon can fully exert the adsorption performance, and the impurities are removed more thoroughly.

The utility model discloses a gear shaft grinding machining device for planetary reducer production, which comprises a working table, and a supporting block is fixedly connected to the lower side surface of the working table. The grinding machine is pushed by the second electric push rod to rotate in the supporting seat, so that a grinding head of the grinding machine can be obliquely adjusted to a specified angle, the electric sliding seat is started to push the supporting seat to move, the grinding machine is in contact with a gear shaft to start grinding, and meanwhile, the fan is started to clean dust generated by grinding. The gear shaft can be conveniently and flexibly placed and taken, and meanwhile, part of inclined tooth surfaces can be subjected to inclined grinding machining.

The utility model discloses a stirring machine for plastic processing, which relates to the technical field of plastic processing and comprises a stirring tank and a discharge pipe mounted on one side of the stirring tank, a rotating shaft is rotatably connected in the stirring tank, stirring paddles A in an annular array are fixedly connected on the surface of the rotating shaft, and stirring paddles B are movably connected in the rotating shaft and positioned at the tops of the stirring paddles A; a lifting piece is arranged in the rotating shaft and comprises a sliding groove formed in the surface of the rotating shaft, and a lifting block is movably connected into the rotating shaft in a sleeved mode. According to the stirring machine for plastic processing, the driving piece and the lifting piece are arranged, when the stirring machine is used, the motor is started to drive the eccentric wheel to rotate, the stirring paddle B can be driven to ascend and descend along the interior of the sliding groove, the purpose of driving the stirring paddle B to ascend and descend can be achieved through the eccentric wheel, and therefore plastic particles can be fully stirred; and the problem of low production efficiency caused by non-adjustable height of the existing stirring rod is further solved.

The utility model discloses a lathe cutting assembly, which comprises a slide carriage box and a cutter fixing part, the slide carriage box is arranged on a lathe slide rail, the cutter fixing part is arranged on the top surface of the slide carriage box, the cutter fixing part comprises a fixing base arranged on the top surface of the slide carriage box, a two-way screw rod is rotatably arranged in the fixing base, and the two-way screw rod is arranged on the top surface of the slide carriage box. Two sliding clamping blocks are arranged on the top surface of the fixed base, the two sliding clamping blocks are in threaded connection with the two-way screw rod, a fixed frame is arranged on the top surface of the fixed base, and a cutter is fixed in the fixed frame. By arranging the cutter fixing part, when a cutter is fixed, the two sliding clamping blocks are driven to slide and move at the top end of the fixing base through rotation of the two-way lead screw, so that the two sides of the cutter are clamped and fixed, and then the cutter is secondarily fixed through the threaded rod arranged on the fixing frame; and the cutter can be stably fixed to the fixed base, and the situation that the cutter is loosened in the turning process is prevented.

The utility model discloses a machining cutting device for a single-wall winding pipe with a clamping structure, which belongs to the technical field of single-wall winding pipe machining and comprises a working table, a support is fixedly connected to the lower surface of the working table, the lower surface of the working table is in a protruding shape, a motor is fixedly connected to the surface of the working table, and the clamping structure is arranged on the support. The lower surface of the workbench is fixedly connected with a connecting plate; the upper surface of the workbench is fixedly connected with a connecting rod, and the tail end of the connecting rod is movably connected with an electric cutter through an electric sliding rail. And a connecting shaft is rotationally arranged in the connecting plate. According to the machining and cutting device provided with the clamping structure and used for the single-wall winding pipe, in the using process, a motor is started, at the moment, the motor drives a connecting shaft to rotate in a connecting plate through a belt wheel, then a sliding plate moves towards the middle position of the workbench under the action of the connecting shaft and a limiting groove, and finally a workpiece is clamped and fixed through a clamping plate; the operation process is simple and convenient and the working efficiency is high.

This utility model relates to the field of gear hole machining technology, specifically to a device for machining balance shaft gear holes. It includes a connecting plate with several limiting grooves on one side. A gripper slides within these grooves. A worm gear ring rotates inside the connecting plate, with spiral teeth fixed to one side. Several arc-shaped tooth grooves meshing with the spiral teeth are formed on one side of the gripper. A worm rotates inside the connecting plate, meshing with the worm gear ring. A slot is formed at one end of the gripper, with a pair of positioning blocks rotating within it. A gear body is clamped between the grippers. This utility model solves the problem that in existing gear machining, machine tool clamps often grip only the outer edge of the gear, making single-tooth clamping prone to displacement. Furthermore, the self-locking mechanism between the grippers and the spiral teeth inevitably leads to loosening over time.

The utility model discloses a pedestrian passageway gate capable of avoiding pinching people in the technical field of passageway gates, which comprises a gate base, gate driving columns are assembled on two sides of the top end of the gate base, and gate core plates are assembled on side walls of the two gate driving columns; anti-pinch mechanisms are assembled on the opposite side walls of the two gate core plates; each anti-pinch mechanism comprises a driving plate and a rotating shaft which are mounted at the upper end and the lower end of the side wall of each gate core plate; bearing seats are mounted on the opposite side walls of the two driving plates, and the ends of the rotating shafts are mounted in the bearing seats; the rotating shaft is sleeved with a rubber cylinder. The pedestrian path gate capable of preventing people from being pinched is reasonable in structural design; the anti-pinch mechanisms are arranged on the opposite side walls of the two gate core plates, the anti-pinch performance of the ends of the gate core plates can be achieved through the rotating shafts in the anti-pinch mechanisms, the safety of the gate core plates can be improved through rotation of the rotating shafts, the pedestrian path base can be embedded in the ground, installation is convenient, and space is saved.

The utility model relates to the technical field of building blocks teaching aid, especially to a circuit module and circuit toy set, including base, the side of base is provided with the interface for inserting the power cord, the bottom of base is provided with the standardization intermate structure for inserting on building block board, and the standardization intermate structure is connecting post or connecting groove, the inside rotation of base is provided with magnetic attraction component and the driving device of driving magnetic attraction component rotation, at least partly transparent liquid storage cylinder body, detachably installed on the base, the bottom of liquid storage cylinder body is equipped with magnetic rotation component, wherein, when liquid storage cylinder body installs to base, magnetic rotation component is located in the magnetic field action range of magnetic attraction component, when driving device drives magnetic attraction component rotation, through magnetic field coupling drives magnetic rotation component synchronous rotation, makes the liquid in liquid storage cylinder body form whirlpool, this scheme has the advantages of non -contact transmission to avoid mechanical wear and tear, high modular degree and convenient maintenance.

The utility model relates to the technical field of guardrails, disclose a kind of zinc steel guardrails of high strength convenient to dismantle, including connecting rod, the side of connecting rod is provided with upper crossbeam, the side of connecting rod is provided with lower crossbeam, the both ends top of upper crossbeam and lower crossbeam are all set up with limit slot, the both sides of connecting rod are all fixedly connected with rotating fixed component, the inner wall of upper crossbeam is sleeved with flat pad, the inner wall of lower crossbeam is sleeved with buckle pad, the middle of upper crossbeam and lower crossbeam is provided with vertical rod, the bottom of connecting rod is fixedly connected with support plate. The utility model is by pressing down upper button shell, in turn sliding down, limit post also slides down along the inner wall of V-shaped limit slot, drives lower button shell movement, to make fixed plate rotate, in turn limit post enters the other end of V-shaped limit slot along the inner edge of V-shaped limit slot, to realize the rotation of fixed plate in the inside of upper crossbeam and lower crossbeam, to realize the quick dismantling of guardrail further.

The invention discloses a hip joint replacement operation leg supporting instrument which is placed on an operating bed during use and sequentially comprises a leg fixing support, an upper universal joint, a telescopic supporting rod, a lower universal joint and a support structure from top to bottom. The leg fixing support is used for at least supporting the thigh part, close to the knee joint, of the affected side leg; the telescopic supporting rod telescopically moves and is used for completing inward folding and outward unfolding actions, and the support structure forms a containing space for containing lower legs and is arranged on a bed body when used; the upper universal joint independently rotates to complete the actions of internal rotation and external rotation; and the lower universal joint and the upper universal joint are matched to rotate so as to complete buckling and stretching actions. The two universal joints are matched with one telescopic supporting rod to complete the actions of buckling and stretching, adduction and abduction, and internal rotation and external rotation; and when the telescopic supporting rod is in the locking state, the supporting effect is achieved, and when the two universal joints rotate independently or rotate together, an operator only needs to easily control the joints to rotate.

This invention proposes an evaporator for water radiation monitoring, belonging to the field of water radiation monitoring technology. The evaporator includes: an evaporation chamber, which is square in shape, with injection pipes at each of the four corners; a rotating support, rotatably mounted inside the evaporation chamber, with four centrally symmetrical telescopic support arms on its outer side, each telescopic support arm having a placement ring mounted on its outer end; a rotating shaft, rotatably mounted inside the evaporation chamber and drivingly connected to the telescopic support arms, with a rotary motor connected to its bottom end; and an arm control assembly, one for each of the four telescopic support arms, with its transmission mechanism between the telescopic support arms and the rotating shaft. This invention has the advantages of high evaporation efficiency and automatic liquid injection within the evaporation chamber.

The application discloses an electric cylinder and a centrifugal safety device thereof. The safety device comprises an outer sleeve, an inner sleeve and a centrifugal assembly. The outer sleeve has a cavity, a blocking part and a first accommodating part. The inner sleeve is arranged inside the outer sleeve and has a protruding part and a second accommodating part. The centrifugal assembly is arranged between the first accommodating part and the second accommodating part and comprises a centrifugal block and an elastic element. The inner sleeve drives the centrifugal assembly to rotate. When the centrifugal force of the centrifugal block is smaller than the elastic force of the elastic element, the centrifugal block is limited in the second accommodating part by the elastic element, so that the inner sleeve can rotate inside the outer sleeve. When the centrifugal force of the centrifugal block is greater than the elastic force of the elastic element, the centrifugal block moves into the first accommodating part and is clamped by the protruding part and the blocking part, so that the inner sleeve and the outer sleeve are connected.

The utility model discloses a laboratory full-automatic main reaction device which comprises a sealing outer frame, an outer conveying opening is formed in one side face of the sealing outer frame, and an outer sealing door is arranged on the outer conveying opening in a sliding mode; the conveying unit is arranged on the side surface of the sealing outer frame and is used for conveying the reaction kettle from the outside of the sealing outer frame to the inside of the sealing outer frame; the rotary manipulator is arranged on the inner top surface of the sealing outer frame, a clamping manipulator is arranged at the tail end of the rotary manipulator, and the clamping manipulator clamps the reaction kettle and moves the reaction kettle to the main reaction station; the feeding unit is located above the main reaction station, and after the reaction kettle is placed on the main reaction station, the feeding unit is connected with the reaction kettle in a sealed mode and feeds materials into the reaction kettle. The whole experiment process from reaction kettle installation, feeding to main reaction is all limited in a closed space, experimenters do not need to make close contact with dangerous materials and do not need to participate in the main reaction process, intrinsic safety is achieved, and the safety coefficient of the experimenters is greatly improved.

This utility model relates to a seamless steel pipe cutting device for mining drills, including a fixed frame. A translation component is movably mounted on the top of the fixed frame, and a push rod is movably mounted on the side of the fixed frame. A positioning component is provided at one end of the push rod. A connecting plate is movably mounted on the bottom of the translation component, and a rotating component is movably mounted inside the connecting plate. This seamless steel pipe cutting device for mining drills, by incorporating the rotating component, allows for omnidirectional cutting of the outer surface of the steel pipe by activating a drive motor. The output shaft of the drive motor drives a gear and a gear ring to mesh, thereby causing a rotating ring and a micro pulley to rotate inside the connecting plate. The rotation of the rotating ring synchronously drives a laser cutting head to rotate and cut the outer surface of the steel pipe, achieving comprehensive cutting of the outer surface of the steel pipe and improving cutting efficiency.

This invention relates to the field of concrete mixing plant technology and discloses a wastewater recovery device for a concrete mixing plant specifically for pipe piles. The device includes a support frame, with a support pole fixedly connected to the bottom of the support frame, a drain pipe fixedly connected to the bottom of the support frame, and a support bracket fixedly connected to the left end of the support frame. This invention utilizes a motor driven by a limiting ring to rotate a drive shaft. This rotation allows the rotating bracket, collecting sleeve, and filter screen on the surface of the drive shaft to rotate and adjust within the support frame. This enables the screening of water and impurities from the product conveyed by a conveying rod and feeding plate driven by a second motor inside the feeding sleeve. When the first motor is driven, it rotates the collecting sleeve to the bottom of the support frame, facilitating the removal of the screened product by workers and improving the efficiency of the screening process.