32results about How to "Increase rotation speed" patented technology

This invention relates to the field of river hydrological monitoring technology and discloses a river water quality monitoring device, including a float. A power auxiliary unit is located at the top of the float. A water quality monitor, a main controller, and indicator lights are located on one side of the top of the float. A second fixing plate is located at the center of one side of the float. A column is located at the outer bottom end of the second fixing plate. A cylinder is located at the lower part of one side of the column. A direction adjustment unit is located inside the cylinder. One end of the direction adjustment unit is connected to a paddle. An output shaft is located on the side of the cylinder away from the paddle, penetrating the cylinder. A second motor is located on the side of the second output shaft away from the cylinder. A torque limiting unit is located on the side of the second motor away from the second output shaft. The torque limiting unit is mechanically linked to the power auxiliary unit. A sampling unit is located at the center of the bottom of the float. The sampling unit includes a first motor, which is fixed to the bottom of the float. An output shaft is located at the bottom of the first motor. Beneficial effect: Facilitates sampling and testing of water at different depths within the same water area.

The utility model belongs to conveying device technical field discloses a box -shaped piece turnover device. The device includes first conveying mechanism, second conveying mechanism, spacing support and rotary support plate, is formed with arc channel in spacing support, and cigarette case can enter arc channel from first conveying mechanism with horizontal attitude, carries along arc channel and exports arc channel with vertical attitude and enters second conveying mechanism. Rotary support plate can rotate around the circle center axis, realizes the conveying of cigarette case and realizes the stable turnover of cigarette case with spacing support cooperation, also can swing itself, thereby avoids the collision between rotary support plate and peripheral object, makes the rotation speed around the circle center axis improve obviously, thereby improves turnover efficiency greatly, guarantees the production efficiency of cigarette packaging.

The application belongs to the technical field of micro-bubble generating equipment, and discloses a cyclone-reversal type micro-bubble generator. The micro-bubble generator comprises a liquid inlet pipe, a cyclone isolation cylinder, a first-stage cyclone cavity, a second-stage cyclone cavity, a cyclone reversal cavity, a Venturi nozzle and an air injection pipe. Liquid phase enters the first-stage cyclone cavity along the tangential direction of the periphery of the first-stage cyclone cavity through the liquid inlet pipe. The cyclone isolation cylinder is coaxial and isohypse with the first-stage cyclone cavity, and the inside of the cyclone isolation cylinder is the second-stage cyclone cavity. One end of the first-stage cyclone cavity and one end of the second-stage cyclone cavity are connected with the cyclone reversal cavity. The air injection pipe is inserted into the second-stage cyclone cavity through the cyclone reversal cavity along the central axis of the micro-bubble generator. The other end of the second-stage cyclone cavity is connected with the Venturi nozzle. The contraction pipe section is directly connected with the other end of the second-stage cyclone cavity or extends into the second-stage cyclone cavity. The micro-bubble generator has the advantages of ensuring the stability of cyclone, being more compact in structure, having stronger cyclone shear action on airflow, and generating smaller micro-bubbles.

This invention discloses a dual-buoy wave-current energy combined power generation device, comprising a connecting rod and two identical float power generation components. Each float power generation component includes a float upper shell, a support rod, a push rod, a ratchet transmission assembly, a speed-increasing assembly, and a generator. The two float components are hinged together by the connecting rod and oscillate relative to each other with the waves, using a lever principle to drive the push rod in a reciprocating motion. The ratchet transmission assembly converts the reciprocating motion into unidirectional rotational output, which is then accelerated by two stages of speed-increasing components to drive the generator, achieving dual-buoy coupled power generation. The lower shell of the float is conical to reduce seawater resistance and contains springs and vibration energy storage blocks to recover vibrational energy and improve wave energy utilization. This device uses a helical impeller to absorb ocean current energy; the blades are subjected to force perpendicular to the helical shaft, achieving unidirectional self-starting rotation. This invention features a simple structure, high transmission efficiency, and stable output. Through wave-current energy combined power generation and the dual-buoy coupling design, it significantly improves power generation efficiency and device stability.

The invention relates to a mechanical arm and a medical trolley. Comprising a first arc-shaped joint which is provided with a first arc-shaped track and a first central axis perpendicular to the plane where the first arc-shaped track is located; the first arc-shaped joint comprises a first arc-shaped arm and a second arc-shaped arm, and the second arc-shaped arm and the first arc-shaped arm are movably connected along a first arc-shaped track; and the second arc-shaped joint is provided with a second arc-shaped track and a second central axis perpendicular to the plane where the second arc-shaped track is located, the second central axis and the first central axis intersect at the virtual motion center, and the second arc-shaped joint is movably connected with the second arc-shaped arm along the second arc-shaped track. The motion center can be kept unchanged, the control stability of the motion center can be improved, and the control error of the motion center is reduced.

This utility model provides a dust filter device, belonging to the field of charging pile technology, including: a cyclone dust collector, which includes a dust collector shell, a negative pressure suction pipe, and at least one centrifugal separation unit; the dust collector shell includes an independent negative pressure chamber, an air inlet chamber, and a dust collection chamber, and the negative pressure suction pipe is connected to the interior of the negative pressure chamber; the centrifugal separation unit includes an air inlet pipe and an air outlet pipe, the inlet of the air inlet pipe is connected to the interior of the air inlet chamber, the outlet of the air inlet pipe is connected to the interior of the dust collection chamber, the inlet portion of the exhaust pipe extends into the inlet of the air inlet pipe, and the outlet of the exhaust pipe is connected to the interior of the negative pressure chamber, and a spiral guide vane is provided in the annular gap between the inner wall of the air inlet pipe and the outer wall of the exhaust pipe; the beneficial effects of this utility model are: the cyclone dust collector is not easily blocked by dust when maintaining a large air intake, and can effectively block conductive metal dust, eliminating the risk of short circuit caused by the accumulation of metal dust.

This invention discloses a cement production and processing apparatus, belonging to the field of cement production and processing. The apparatus includes a mounting frame, a calcining furnace, and a grinding jar. The calcining furnace is rotatably connected to the top of the mounting frame via a rotating base. The calcining furnace and the grinding jar are connected via a feed pipe, which is rotatably connected to the calcining furnace and fixedly connected to the grinding jar. The apparatus also includes a grinding component and a cooling component. The grinding component is used to grind cement clinker, and the cooling component is used to cool the cement clinker after high-temperature calcination. This invention uses a condensing ring to perform water bath cooling on the cement clinker, effectively improving cooling efficiency. The evaporation of water within the condensing ring generates power to drive a turbine, rotating the grinding rollers and grinding the cement clinker in the grinding jar. The steam is then condensed and returned, reducing energy consumption and improving energy efficiency.

This invention discloses a photodynamic micro / nano motor based on metal particles. It involves superimposing two laser beams onto a metal particle on a support platform without a built-in track, driving the particle to rotate around the center of the laser beam. This invention utilizes localized surface plasmon resonance of the metal under light irradiation to achieve off-axis balance and orbital rotation of the particle across the beam cross-section. This results in an ultra-small subwavelength orbital rotation radius and significantly increases the rotational speed of the particle, thus realizing an ultra-small, high-speed photodynamic micro / nano motor.

The application discloses an oilfield produced oily sewage pretreatment equipment and relates to the technical field of sewage treatment. The equipment comprises a tank body unit, a tank body, an inlet opening arranged on one side of the tank body and used for connecting the incoming sewage, a discharge opening arranged on the other side of the tank body and used for discharging water, and a maintenance opening arranged on the tank body and used for maintaining and cleaning the inside of the tank body. The filter assembly is rotated by the impact force of the sewage, and the particulate matters and impurities in the sewage are intercepted, so that the particulate matters are separated. Meanwhile, the spraying assembly extracts the water in the tank body to flush the filter assembly, the impurities are removed, and the rotating speed of the filter assembly is accelerated. Meanwhile, the air injection assembly starts to deliver air to the tank body, so that air bubbles are generated at the bottom of the oily sewage, the air bubbles adsorb the oil and take the oil to the surface of the sewage, the separation process is accelerated, the oily sewage is divided by the separation assembly, the bottom sewage is discharged, and the oil at the top is collected, so that the oily sewage and the oil on the surface of the sewage are simultaneously collected and discharged.

This invention belongs to the field of aquatic aeration technology, and specifically relates to an aeration and stirring device, comprising: a shell, a first aeration pipe, a stirring assembly, and a deceleration assembly; the first aeration pipe, the stirring assembly, and the deceleration assembly are disposed inside the shell, with the first aeration pipe located at the bottom of the shell, aerating the material inside the shell; the stirring assembly agitates the bubbles released by the first aeration pipe; the rotation of the stirring assembly drives the first aeration pipe to rotate; and the deceleration assembly makes the rotation speed of the stirring assembly greater than that of the first aeration pipe. By rotating the first aeration pipe, materials at greater depths can be fully aerated, while the rotation of the stirring assembly ensures that materials at less depths are fully aerated, resulting in uniform aeration of materials at different depths and improving aeration efficiency; the deceleration assembly makes the rotation speed of the first aeration pipe less than that of the stirring assembly, which facilitates the stirring assembly to fully agitate the bubbles released by the first aeration pipe into materials at less depths, improving oxygen utilization and increasing aeration efficiency.

The present application relates to the technical field of drilling and milling equipment, and particularly relates to switchable double-station drilling and milling equipment and a control method thereof. The switchable double-station drilling and milling equipment comprises a first moving mechanism, the first moving mechanism comprises a first screw rod, a first nut and a sleeve, the first nut can rotate relative to the first screw rod and can move along a second direction relative to the first screw rod. A guide block is arranged on the outer peripheral wall surface of the first nut, a first spiral groove is formed on the inner peripheral wall surface of the sleeve, and the guide block can extend into the first spiral groove and rotate with the first spiral groove. The switchable double-station drilling and milling equipment of the present application is matched by setting a machine base, a moving base, a first moving mechanism and a machining platform, the transmission relationship of the first nut, the first screw rod and the sleeve is adjusted by changing the rotating speed of the first nut, and the collaborative operation of precise machining feeding and rapid station switching is realized.

The application relates to the field of N,N-dimethylformamide, and specifically provides a high-purity N,N-dimethylformamide synthesis system and method, which comprises a fixed bed reactor; a cooling pipe is fixedly connected in the fixed bed reactor; a connecting pipe is communicated in the cooling pipe; and a gas pump is fixedly connected to one end of the connecting pipe away from the cooling pipe; when the fixed bed reactor is working, the temperature inside the fixed bed reactor continuously rises; when the temperature rises to more than 400 DEG, a first control valve on a water inlet pipe is opened; then cold water is injected into the cooling pipe from the water inlet pipe; and then the first control valve is closed; at this time, the cooling pipe absorbs the heat inside the fixed bed reactor due to the cold water, so that the temperature inside the fixed bed reactor is reduced, and the problems of catalyst coking due to local overheating, increased side reactions and reduced catalyst utilization rate when the temperature inside the reactor is too high are reduced.

The invention relates to the technical field of canning transportation, in particular to a canning transportation device and method for nutritional porridge processing, the canning transportation device comprises a conveying table, a can body and a can base, two gears are rotationally connected to the inner wall of the conveying table, a chain assembly is hinged to the outer walls of the two gears, and the chain assembly is composed of a plurality of connecting strips and connecting shafts; connecting rods are fixedly installed at the top ends of the connecting shafts, clamping shafts are rotationally connected to one sides of the connecting rods, the opposite sides of the two clamping shafts can be clamped to the outer wall of the tank body, and the chain assembly can drive the tank body to move. Through cooperation of the chain assemblies, the gears, the clamping shafts, the connecting rods, the tank body and the conveying table, when the two clamping shafts are clamped to the outer wall of the tank body and the tank body rotates, the two clamping shafts can be driven to rotate, friction resistance is reduced, the rotation speed of the tank body is increased, different ingredient formulas of porridge are fully mixed, precipitates are reduced, and the functionality of the device is improved.

This utility model discloses an automatic fume extraction welding machine, including a welding head, a fume extraction assembly, and a fume extraction pipe. The fume extraction assembly achieves efficient airflow acceleration through magnetic drive of a vortex impeller and an excitation assembly. The cooperation of a fixed-rotation ring and a shaft sleeve guides the airflow and accelerates fume emission. A grid ring and a heat-insulating kit further improve fume filtration efficiency, ensuring effective removal of harmful substances from welding fumes. This utility model, by employing vortex impeller and magnetic drive technology, not only improves the fume extraction effect but also significantly reduces energy consumption and noise, offering advantages such as high efficiency, energy saving, and environmental friendliness. Simultaneously, it simplifies the equipment structure, facilitating cleaning and maintenance, and is suitable for various welding operations, especially in environments with strict requirements for welding fume extraction.

The utility model discloses a speed regulating mechanism for a clothes dryer motor and the clothes dryer motor, the speed regulating mechanism for the clothes dryer motor comprises one or more groups of clutch speed regulating units, and the plurality of groups of clutch speed regulating units are connected in sequence; the clutch speed regulation unit comprises a sun gear and a limiting cylinder, a first fluted disc and a second fluted disc are arranged on the sun gear and the limiting cylinder respectively, the sun gear and the limiting cylinder are connected with each other through a planet gear, the two sides of the planet gear are meshed with the first fluted disc and the second fluted disc respectively, and a driving disc is connected to the exterior of the planet gear; the sun gear is used for driving the planet gear to rotate after rotation, and the limiting cylinder is used for circumferentially limiting the planet gear; and the planet gear is used for forming circumferential rotation under the control of the sun gear and the limiting cylinder and driving the driving disc to rotate. The transmission device has the characteristics of good transmission effect and high motor efficiency.

The application discloses a pipe stranding machine for cross-linked polyethylene cloth electric wire processing and relates to the technical field of pipe stranding machines.The pipe stranding machine comprises a bottom plate, a vertical plate fixed to the upper end face of the bottom plate, a limiting seat fixed to the bottom plate, a motor fixed to the limiting seat, and a stranding cage body connected with the limiting seat.The positioning mechanism drives the limiting seat to move through a first air cylinder, the distance between the two limiting seats can be quickly adjusted, the pay-off reel can be quickly clamped and fixed, manual accurate calibration is not needed, the operation process is greatly simplified, the installation time is shortened, and simultaneously, the limiting seat moves in the process, synchronously driving the sliding rod, the cylinder and the clamping block to move, the clamping block is matched with the clamping toothed plate in the stranding cage body through the elastic force of the first spring, the stranding cage body is automatically locked, the safety hidden danger caused by the misstart of the stranding cage body during the installation of the pay-off reel is effectively avoided, and the safety of the equipment use is remarkably improved.

The application relates to an underwater cleaning robot escape method, and the specific steps are as follows: continuously acquiring real-time position information of the robot and updating historical walking track data in real time. Then, the data is analyzed, the track space overlap degree is calculated, and whether the degree continuously satisfies a preset trapped judgment condition is judged. If yes, it is judged that the robot is trapped. Once it is judged that the robot is trapped, a preset escape flow is started immediately, and the robot is controlled to execute an escape movement according to a preset escape strategy. Then, whether the robot has escaped is judged. If yes, the escape flow is immediately stopped, and a movement control mode is switched back to a regular cleaning task mode. The application enables the control system to accurately identify whether the robot is in a continuously invalid movement state, and can autonomously take effective measures to get rid of the state. Technical defects, such as being easily trapped, low cleaning efficiency and coverage, and relying on manual intervention, of an existing random walking cleaning robot are effectively overcome.

This invention discloses a small-scale air dust purification and environmental protection device, including a dust treatment cabinet, a dust suction pipe installed on the dust treatment cabinet, and a dust suction fan installed inside the dust suction pipe. A filter bag assembly is installed inside the dust treatment cabinet, the filter bag assembly including a dust collection bag and a bag cage, with the dust collection bag positioned around the bag cage. The device is characterized by further including an automatic dust removal unit and a self-rotating unit. The automatic dust removal unit, added to the original equipment, utilizes the gravitational changes caused by dust adhering to the filter bag assembly, the combined effect of the gravity of each component, and magnetic attraction to complete intermittent automatic dust shaking, effectively preventing increased filtration resistance and decreased dust removal efficiency in the filter bag assembly. The self-rotating unit, through the centrifugal force generated by rotation, flings the shaken-off dust in all directions, thereby preventing dust accumulation around the impact point and extending the dust removal interval.

The application discloses a kind of can accelerate crucible suspension cooling lifting appliance, it is related to silicon carbide crystal preparation technical field, including the gravity clamping lifting appliance for lifting and suspending the crucible in growth furnace, it further includes the heat power heat dissipation mechanism for the crucible using the heat carried by the crucible as power source to carry out heat dissipation.The application has reasonable structure, the application adds heat power heat dissipation mechanism on original lifting appliance, the cooling lifting appliance uses the heat of crucible itself to generate electricity and provides electric energy for motor, and uses the wind power generated to carry out heat dissipation to crucible, can accelerate the suspension cooling speed of crucible, and the heat dissipation effect of the heat power heat dissipation mechanism is mild, and will not produce influence to crucible and crystal.

The utility model discloses a high-precision cutting device for optical lens processing, which comprises a supporting mechanism, the supporting mechanism comprises a bottom plate, a plurality of supporting columns are arranged on the upper end face of the bottom plate, a working table is supported by the top ends of the supporting columns together, a driving mechanism is arranged at the top end of the bottom plate, and a milling cutter is arranged at the top end of the working table. A driving mechanism is arranged on the workbench, a supporting plate is arranged on the edge of the top end of the workbench, a lifting mechanism is arranged on the side, facing the workbench, of the top end of the supporting plate, the driving mechanism comprises a base, the top end of the base is rotationally connected with a small gear, and the top end of the small gear is fixedly connected with a first rotating disc. The problem that a clamping plate of a clamping mechanism of an existing cutting device is a plane, and an optical lens with curvature is inconvenient to clamp is solved.

This invention relates to the field of drilling equipment technology, and more particularly to a mobile drilling device suitable for mineral exploration engineering. It includes a drilling rig body, a fixed base mounted on the drilling rig body, a lifting base movably mounted on the fixed base, a movable base slidably connected to the lifting base, a rotating cylinder rotatably connected to the movable base, a drill bit rotatably mounted at the bottom of the rotating cylinder, a drive assembly on the lifting base, and an auxiliary assembly inside the drill bit. This invention uses the drive assembly to drive the drill bit and the rotating cylinder to rotate in opposite directions at a differential speed. First, it causes the rotating cylinder to synchronously and intermittently lift, enabling impact crushing of the bottom of the borehole to improve drilling efficiency. Then, combined with the rotation of the rotating cylinder, it drives multiple auxiliary crushing discs within the auxiliary assembly to revolve around the drill bit while simultaneously rotating rapidly on their own axis. These auxiliary crushing discs thoroughly crush the area around the bottom of the drill bit, assisting in the overall crushing effect after the drill bit descends, further improving drilling efficiency.

The utility model belongs to the technical field of lens processing equipment, especially relates to a gas float mechanism of lens fine grinding and polishing machine, including gas float mechanism, rotary drive mechanism, swing adjusting mechanism and position adjusting mechanism. The gas float mechanism includes fixed base, main shaft, lower supporting ring and lower ball basin. The lens polisher provided in the application can drive the lower ball basin to realize rotary motion and swing motion simultaneously, ensures that each part of the lens can be evenly polished, improves the surface quality and optical precision of the lens, sets up the air inlet on the lower supporting ring, can set the lower ball basin to float on the top side of the lower supporting ring after connecting the external air source, forms the air film between the lower ball basin and the lower supporting ring, avoids the direct contact of both, reduces the friction resistance, makes the rotary motion of the lower ball basin more smooth, effectively improves the rotary speed, and improves the lens polishing efficiency and uniformity.

The application belongs to the technical field of robots, and discloses a hatch opening and closing structure and a mobile robot. The hatch opening and closing structure comprises a hatch, an elastic mechanism, a transmission mechanism and a driving mechanism. The elastic mechanism comprises a fixed component, a rotating component and an elastic piece. The hatch is rotatably installed on the fixed component through the rotating component. The elastic piece is arranged between the fixed component and the rotating component. The elastic piece has a first end and a second end. The first end is in abutment with the rotating component, and the second end is in abutment with the fixed component. The driving mechanism is connected with the rotating component through the transmission mechanism. The hatch opening and closing structure can improve the opening speed of the hatch and shorten the waiting time of the user for the hatch to be opened.

The invention relates to the technical field of electrical cabinets, in particular to a frequency conversion PLC control cabinet which comprises a shell, a PLC, a wire box, a shutter, a wiring terminal, a power source, an air switch and a control panel and further comprises a frequency converter, a blocking sleeve, an exhaust assembly and an air inlet assembly. The cooling fan is communicated with the bottom of the frequency conversion body, the blocking sleeve is trapezoidal, the top of the blocking sleeve is connected with an exhaust assembly, and one side of the top of the blocking sleeve is communicated with the exhaust assembly; and the wind power output end of the cooling fan communicates with the exhaust assembly and sends hot air generated by the frequency converter body into an inner cavity of the exhaust assembly, and the hot air is discharged in one direction by the exhaust assembly. Heat discharged by the frequency converter is intermittently discharged through rotation of the fins, so that the frequency converter is located in a relatively closed space; and a good effect of isolating electromagnetic interference is achieved.

The application discloses a wind energy conversion device for a pasture area, which comprises a supporting table and a folding unit. The top and bottom of the supporting table are respectively provided with mounting holes at equal distances in a circumferential array. The center of the supporting table is provided with a circular through groove. A wind cylinder unit is arranged above the circular through groove. A rotating unit is fixedly installed on the top of the wind cylinder unit. A first wind energy conversion unit is arranged in the wind cylinder unit. The wind energy conversion device for the pasture area has the advantages of small land occupation, convenient installation, low practical cost, high wind energy conversion efficiency, high pressure utilization of small wind power, greatly improved operation quality of the wind energy conversion device, difficulty in hurting flying animals, and the capability of cleaning ice layers and ice blocks on fan leaves in winter, and the capability of retracting the fan leaves into the device, so that the fan leaves and the wind energy conversion device are effectively protected.

The application relates to the technical field of industry, in particular to a crawler-type continuous shot blasting equipment which comprises a base device, a load plate is arranged above the base device in parallel, and the base device is hingedly connected with the load plate; a cylinder is movably installed on the base device, a cavity rod of the cylinder is movably connected with the base device, and an inner rod of the cylinder is movably connected with the load plate; a supporting mechanism is fixedly installed on the side of the load plate; a crawler fixing device is movably sleeved on the upper portion of the supporting mechanism; a crawler assembly is movably installed between the two crawler fixing devices; a convex tooth is formed on one end of the crawler assembly; a motor is fixedly installed on the load plate; a driving gear is fixedly installed on a rotating shaft of the motor, and the driving gear is arranged in meshing contact with the convex tooth. In the application, the full-closed crawler assembly greatly improves the rotating speed of the whole crawler assembly, increases the amount of contained workpieces, improves the processing efficiency, reduces the production cost of the equipment, saves materials, can quickly pour out all the internal objects, and is extremely efficient.

The utility model relates to the technical field of medical solid-state microwave sources, in particular to an over-temperature protection device for a medical solid-state microwave source, and aims to solve the problems that the existing medical solid-state microwave source can only dissipate heat through a single heat dissipation opening, so that equipment can frequently trigger an over-temperature protection mechanism, and the working stability is reduced; heat generated by the power amplifier can be conducted through the heat conduction assembly in the protection frame, so that gas in the main rod and the supporting rod expands to drive the rack to move, the moving assembly presses the button through the adjusting assembly to start the fan, and the rotating speed of the fan is related to the moving distance of the moving assembly. The moving distance of the moving assembly, the rotating angle of the magnet A, the extension distance of the supporting rod and heat generated in the equipment are sequentially in a correlation decision relation, so that the higher the heat in the equipment is, the higher the rotating speed of the fan is, finally, water mist is sprayed through a small water pump and an atomization nozzle to assist cooling, and cold air enters the equipment body; therefore, efficient heat dissipation is achieved, and equipment stability is improved.

The present application relates to the technical field of agricultural machinery, in particular to a precision speed-adjustable hydraulic drive fan for air-blowing no-tillage seeding machine, which comprises a fan shell, a hydraulic motor is fixedly installed on the outer wall of the fan shell, a plurality of oil inlet pipes are fixedly communicated with the oil inlet port of the hydraulic motor, an air exhaust pipe is fixedly communicated with the circumferential side wall of the fan shell, and a self-adaptive speed regulation assembly is fixedly communicated with the top end of the air exhaust pipe. The present application adopts the mode of driving the impeller to rotate by the hydraulic motor to replace the traditional mechanical transmission to drive the fan to operate, effectively improves the safety and reliability of the air-blowing seeding fan equipment operation, can accurately detect the seed particle size and instantly adaptively adjust the air-blowing speed of the seeds according to the seed particle size, effectively improves the air-blowing seeding quality, and can adaptively adjust the feeding vibration frequency according to different particle size seeds, so that the seed sowing density is uniform, and the uniformity and continuity of seed sowing are improved.

A sintered bearing has bearing surface portions provided at two places separated in an axial direction of an inner peripheral surface, and a relief portion having an inner diameter larger than those of the bearing surface portions between the bearing surface portions, the sintered bearing containing metal powder and resin powder. The sintered bearing has a structure in which the metal powder is bonded by the resin powder interposed between the metal powder, and the resin powder is an epoxy resin powder containing a latent curing agent of thermosetting property.

The present application belongs to diesel generating set technical field, mainly discloses a kind of mute type diesel generating set for low temperature environment.The problem that the output shaft of diesel engine is increased due to initial connection with the input shaft of generator, including mounting seat, the mounting seat is equipped with sound insulation shell, the mounting seat is fixedly connected with diesel engine and generator, the output shaft of diesel engine is fixedly connected with fixed column, the fixed column is connected with sliding shell by spline, the sliding block is slidably connected in the sliding shell, the input shaft of generator is fixedly connected with connecting column, the connecting column is rotatably connected with rotating disc.The position of sliding shell is moved, the sliding block and rotating disc are connected and matched, the sound insulation shell ensures the mute working state of the device, the output shaft of diesel engine and the input shaft of generator are initially disconnected, only the diesel engine is rotated for preheating, the rotating load of diesel engine output shaft is reduced, and the additional wear of diesel engine is avoided.