37results about How to "Maintenance-free operation" patented technology

The invention relates to a giant magnctostrictivc material pressure sensor, which is characterized in that three giant magnctostrictivc material rods are vertically and evenly arranged on an inner circle of a sensor base and two permanent magnetic rods or two excitation windings are arranged vertically and systemically on three giant magnctostrictivc material rods; upper and lower disk magnetic inductive plates are respectively arranged on the above and at the bottom of the three giant magnctostrictivc material rods and the radiuses are a little bit bigger than the mounting radiuses of the permanent magnetic rods or the excitation windings; the magnetizing directions of the two permanent magnetic rods are axial and are the same; the two excitation windings have the same coiling direction and also the same current direction; the length of the permanent magnetic rods or the excitation windings is a little bit shorter than the length of the giant magnctostrictivc material rods to enable a gap between the top of permanent magnetic rods or the excitation windings and the bottom of the upper disk magnetic inductive plat; non-magnetic inductive glue is filled in the gaps to glue Hall units; inductive windings are coiled on the giant magnctostrictivc material rods; the upper disk magnetic inductive plate are arranged on a bearing block, the lower disk magnetic inductive plates are arranged on the base, an outer cover is arranged on the lower disk magnetic inductive plates, and encloses all parts on the base as a whole but the bearing block protrudes out of the upper surface of the outer cover.

The invention discloses a swing arm machine for logistics sorting. The swing arm machine for logistics sorting comprises a bracket, a driving device, a crankshaft, a connecting rod and a push plate, wherein the driving device is arranged on the bracket; the crankshaft can be rotatably arranged on the bracket by taking one end as a center; the driving device drives one end of the crankshaft to be rotatably arranged; the connecting rod is rotatably connected to the crankshaft, and the crankshaft rotating drives the connecting rod to move; the push plate can be rotatably arranged by taking one end as a center, the connecting rod is connected to the push plate, and the connecting rod is driven by the crankshaft to move, so that the push plate rotates. The swing arm machine for logistics sorting disclosed by the invention is simple in structure, can push parcels to be sorted effectively, and realizes automatic operation.

A manipulator apparatus carries tools for connecting drillpipes to the drillstring in a wellbore on a drilling platform. A telescopically extendable horizontal work arm is carried on a telescopically extendable vertical column, and the tools are to be mounted on a free end of the work arm. The column is manually rotatable about a vertical axis. The column and the work arm are each respectively formed of a fixed element and a telescopically extendable element. The fixed element is preferably formed of two U-profile members arranged back-to-back, and the extendable element includes an H-profile member with its web received between the webs of the two U-profile members. This forms a telescopic slide bearing of the H-profile member sliding along the two U-profile members. The hydraulic cylinders are received in the recessed spaces of the profile members.

A linear motion guide unit is provided which is downsized in size, maintenance-free for lubrication, and makes it possible to assemble easily and quickly the slider with accuracy. The end cap has outward end surfaces each of which is concaved to provide a first recess to fit over a lubricant applicator of porous compact to apply the rollers while running through the turnaround passages, and a second recess to fit over a retainer plate. The retainer plate is surrounded with a peripheral edge of the end cap and held in place with a snap-fit engagement with the end cap to squeeze the lubricant applicator inside the first recess in the end cap.

The invention discloses a device for preventing vehicles from converse running on public roads and an application of the device to municipal roads, and is used for providing a municipal facility witha new structure. The device comprises a cover plate, linear guideways, a large gear and a barbed roller, wherein two parallelly-arranged bases are fixed in ground grooves, and the bases are the linearguideways; the linear guideways are connected with the barbed roller by a rack and pinion structure; resilient elements for resetting are arranged between the linear guideways and the bases or between the linear guideways and the ground grooves; when the resilient element are in a relaxed state, arc tops protrude out of first windows, and stabs are hidden in the ground grooves; after a pressing block is pressed down, the large gear and the barbed roller are driven to rotate, so that the stabs protrude out to be above the cover plate. According to the device, by setting the elastic coefficients of compression springs and leaf springs, the stabs protrude out only when a vehicle exceeding the designed weight passes the device, to force the vehicle to stop, the stabs do not protrude out whena non-motor vehicle passes, and thus the security is high.

The invention provides a gas introduction method for reinforced gas-liquid mass transfer. The key technology comprises that: a gas with pressure enters a gas inlet pipe of a gas-liquid reactor and a gas distribution pocket at the tail end of the gas inlet pipe, and the gas is rubbed with negative ion powder coatings coated on the inner walls of the gas inlet pipe and the gas distribution pocket or a filler coated with a negative ion powder coating on the outer surface in the gas inlet pipe in the flowing process of the gas, so that the gas is excited and a large amount of negative ions are accumulated; and the gas rich in the negative ions is jetted from a gas nozzle of an integrated fluid ultrasound whistle led out from the gas inlet pipe or the gas distribution pocket, and the ultrasonic wave produced when the gas passes through the fluid ultrasound whistle enters the surrounding reaction liquid and drives the surrounding reaction liquid to jointly enter a circular mixing cylinder so as to finish gas dispersion of ultrasonic wave and negative ion double reinforced mass transfer, wherein the circular mixing cylinder is arranged in back of the nozzle, the inner and outer walls of the circular mixing cylinder are coated with negative ion powder coatings, and an ultrasonic transducer is arranged on the outer wall or in the cavity of the circular mixing cylinder.

The invention belongs to the technical field of boiler smoke exhaust purification equipment, and particularly discloses a boiler smoke exhaust purification system. The boiler smoke exhaust purification equipment comprises a dust removal chamber and a desulfurization and denitrification chamber, wherein the upper part of the dust removal chamber and the upper part of the desulfurization and denitrification chamber communicate with each other through a smoke exhaust passage, the middle part of the dust removal chamber and the middle part of the desulfurization and denitrification chamber communicate with each other through an overflowing passage, a water supplementing pipe is arranged at the upper part of the dust removal chamber so as to keep the liquid level in the dust removal chamber atthe position of an overflowing passage opening, moreover, the liquid level in the desulfurization and denitrification chamber is kept not higher than the position of the overflowing passage opening, and an alkali supplementing liquid pipe is arranged at the upper part of the desulfurization and denitrification chamber. According to the boiler smoke exhaust purification system, dust removal and desulfurization and denitrification are carried out in a separated mode, therefore, the situations that an alkali liquor is wasted due to dust pollution to the alkali liquor and the precipitation is difficult to treat are avoided; dust deposits are independently removed through the dust removal chamber, a reaction precipitate is independently discharged through the desulfurization and denitrificationchamber, and different discharged products are separately treated, so that the effects of high-efficiency treatment and secondary pollution prevention are achieved.

The invention discloses a cyclone dust collector for doors of a material shed. The cyclone dust collector comprises the material shed, one side of the middle of the material shed is connected with a support, a cyclone separator is installed on the top of the support, the output end of the cyclone separator communicates with a first connecting pipe, one end of the first connecting pipe communicates with a dust collection pipe, the bottom of the dust collection pipe is connected with a first supporting frame, the other side of the middle of the material shed is connected with a draught fan, the output end of the draught fan communicates with a second connecting pipe, one end of the second connecting pipe communicates with an air outlet pipe, the bottom of the air outlet pipe is connected with a second supporting frame, the two sides of the air outlet pipe communicate with two exhaust pipes correspondingly, and the shed doors are installed on the two sides of the material shed correspondingly. According to the cyclone dust collector for the doors of the material shed, by arranging the cyclone separator, the dust collection pipe, the first supporting frame, a butterfly valve and a dust collection opening, the operation cost is greatly reduced; and by arranging the draught fan, the air outlet pipe, the exhaust pipes and a ventilation opening, dust at the doors can be better collected, and the dust removal effect is improved.

The invention discloses a boiler smoke exhaust purification system, which includes a dust removal chamber and a desulfurization and denitrification chamber. The upper part between the dust removal chamber and the desulfurization and denitrification chamber communicates through a smoke exhaust channel, and the middle between the dust removal chamber and the desulfurization and denitrification chamber communicates through an overflow channel; and the upper part of the dust removal chamber is provided with a water supplying pipe, the liquid level in the dust removal chamber is maintained to be located on the position of an overflow channel opening, the liquid level in the desulfurization and denitrification chamber is maintained to be not higher than the position of the overflow channel opening, and the upper part of the desulfurization and denitrification chamber is provided with a lye supplying pipe. According to the boiler smoke exhaust purification system, dust removal and desulfurization and denitrification are conducted separately, and the problems that lye waste due to the fact that dust contaminates lye and precipitation is difficult to handle can be solved; and dust depositions are cleared independently through the dust removal chamber, the desulfurization and denitrification chamber is used for discharging reactive sediments independently, and different effluents are handled correspondingly, so that the action of efficient handling and secondary pollution prevention is achieved.

The invention discloses a dual-channel radially distributed expandable mechanical seal device, which relates to the technical field of mechanical dynamic seals, including a shell, an inner ring, a ceramic seal ring and a flexible dynamic seal mechanism. A pair of liquid inlet and return expansion ports are arranged on the device, which are distributed at 180° with the original liquid inlet and return ports, so as to reduce the flow resistance and expand the flow capacity of the device, and the flow capacity is significantly increased. It will rotate, and the relative position of the inlet and return ports will change periodically. Therefore, in order to reduce the fluctuation of liquid flow during the rotation process; at the same time, there is a flexible dynamic seal structure inside the device. In order to improve the reliability and life of the flexible dynamic seal, it is necessary to select a suitable compound In addition to the flexible sealing form and installation structure, ceramic materials are sprayed on the surface of the matching metal parts to improve its hardness and wear resistance, and a set of dual-channel radial distribution systems that can adapt to harsh environments such as vibration, shock, and wide temperature range is provided. Expandable mechanical seal.

A time synchronizing signal for synchronizing the times of wireless nodes capable of wireless communication is transmitted to the wireless nodes by multihop. Optional information is transferred by multihop from a predetermined wireless node to an optional node along the same path as the transfer path of the time synchronizing signal by the wireless nodes. Information to respond the optional information is transferred by multihop from the optional wireless node to the predetermined wireless node along the reverse path to the transfer path of the time synchronizing signal.