53results about How to "Strong driving force" patented technology

The invention relates to a single-double-axle switching control method and system for double drive axles with different powers. The method comprises the steps that a double-axle drive mode is initialized after starting; vehicle operation parameters and driver operation intention are obtained, and the driving mode is re-evaluated; determining a current road condition and / or a vehicle load according to the vehicle operation parameters, judging whether to switch to a single-axle driving mode or not at least based on the current road condition or the vehicle load, and determining a main driving axle in the single-axle driving mode; determining an accelerator pedal opening degree and / or a braking energy recovery gear according to the operation intention of the driver, and triggering to switch to a double-axle driving mode when the accelerator pedal opening degree and / or the braking energy recovery gear exceed respective preset thresholds; based on the driving mode needing to be switched, target driving torque and a torque adjusting strategy needed by the driving axle are determined; and in the switching process of the driving modes, the driving torque is dynamically adjusted based on the torque adjustment strategy, so that the driving torque is gradually converged to the target driving torque.

The invention discloses a finger module, a manipulator and a robot. The finger module comprises a finger base, and a knuckle assembly is rotationally connected with the finger base; the driving assembly comprises a driving component, a worm and a worm gear, the driving component is arranged on the finger base, the worm is arranged in the finger base and connected with an output shaft of the driving component, and the worm gear is connected with the worm in an engaged mode. The other end of the connecting rod component is in transmission connection with the knuckle assembly; the driving component is configured to drive the worm to rotate and drive the connecting rod component to rotate through the worm gear so as to drive the knuckle assembly to rotate relative to the finger base. By means of the large transmission ratio characteristic of worm gear and worm transmission, the original relatively small torque of the driving component is amplified, strong driving force is provided for rotation of the knuckle assemblies, the knuckle assemblies rotate relative to the finger base, bending and stretching movement of human finger joints is simulated, the finger module achieves actions such as bending and stretching, and therefore the flexibility of the finger module is improved. Therefore, various grabbing and operation tasks can be completed.

The invention relates to the technical field of industrial dust removal and environmental protection, in particular to a novel gas-solid ejector capable of preventing dust accumulation, which mainly comprises a nozzle, a receiving chamber, a mixing pipe and a diffuser pipe. On one hand, the speed of working fluid sprayed out of the nozzle can be remarkably increased, the pressure difference in a receiving chamber is increased, an ejection working medium falling from a feeding port obtains higher driving force, and it is ensured that the substances can completely flow into a mixing chamber along with the working fluid as much as possible; on the other hand, due to the special inclination angle design of the reducing pipeline, the materials falling on the pipeline naturally flow to the mixing chamber under the traction of gravity, accumulation of the materials in the mixing chamber is effectively avoided, in addition, the area where the lower wall of the inner cavity of the receiving chamber is connected with the reducing pipeline and the lower edge of the nozzle is designed to be of a solid structure, and the structure is simple. And dust particles are ingeniously prevented from being deposited in the region.

The invention discloses an electric drive axle control method of a new energy environmental sanitation vehicle and a related device, and the economical efficiency of the new energy environmental sanitation vehicle is improved while it is ensured that the new energy environmental sanitation vehicle has sufficient power performance. The electric drive axle comprises a transmission, a differential mechanism, a single-gear speed reducer, a power takeoff, a first motor, a second motor, a first coupling element and a second coupling element. The transmission comprises a first-gear gear set, a second-gear gear set and a gear shifting element. An output shaft of the first motor is connected between input shafts of the first-gear gear set and the second-gear gear set in a switching mode through a gear shifting element. The output shaft of the transmission is connected with the input end of the differential mechanism; an output shaft of the second motor is connected with an input shaft of the single-gear speed reducer; an output shaft of the single-gear speed reducer is connected with the input end of the differential mechanism through a first coupling element and connected with an input shaft of the power takeoff through a second coupling element. And the power takeoff is used for transmitting power from the second motor to the loading equipment.

The invention discloses a grinding type underground cutter for an oil extraction pipe, which relates to the technical field of oil collection equipment and comprises a clamping mechanism and a cutting mechanism. The clamping mechanism ensures that the device is stably fixed in an underground pipeline through an anchoring assembly and a first driving assembly; the cutting mechanism adopts a mode of combining a grinding tool bit and a blade, so that efficient and stable pipeline cutting is realized; the stability and durability of blade installation are enhanced through the design of a V-shaped groove of the grinding tool bit, the feeding assembly and the second driving assembly work cooperatively, and the cutting precision and efficiency are ensured; the device is compact in structure, convenient to operate, easy to maintain and suitable for cutting tasks of pipelines of different materials and thicknesses, and an efficient and safe solution is provided for underground operation.

The invention relates to the field of control cabinets, and discloses an intelligent heat dissipation PLC control cabinet which comprises a control cabinet body and four supporting legs, the four supporting legs are fixedly connected to the four corners of the bottom of the control cabinet body, two cabinet doors are arranged on the reverse side of the control cabinet body, and the left side and the right side of the inner wall of the control cabinet body are each fixedly connected with two hinge rods. The four sets of hinge rods are fixedly connected with the two sets of cabinet doors, a heat dissipation net is installed on the front face of the control cabinet, a square hole is formed in the heat dissipation net, the control cabinet further comprises a pressing mechanism, and the pressing mechanism comprises a fixing block. According to the PLC control cabinet, by arranging a pressing plate and a pressing rod, when a heat dissipation net is installed, the pressing rod is driven to rotate downwards by pressing the heat dissipation net, a moving rod is driven to push a rotating rod to rotate, and therefore a pull rod pushes a push rod to fix a square hole inserted into the heat dissipation net, and the installation speed is greatly increased.

The utility model relates to a bogie, a rail vehicle and a rail transit system, and the bogie comprises two groups of mutually independent suspension assemblies which are respectively used for being connected with a vehicle body and are used for being correspondingly connected with walking wheels on the left side and the right side in a one-to-one manner; the driving assembly is used for being connected with the walking wheels on the left side and the right side, at least part of each set of hanging assembly is located on the first side of the corresponding walking wheel, the first side is configured to be the side, away from the other walking wheel, of the corresponding walking wheel, and the driving assembly is arranged between the walking wheels on the left side and the right side. The arrangement space in the middle of the whole bogie is increased and used for arranging a driving assembly, and driving power is increased. And each bogie of the vehicle can be arranged into the independent suspension, so that the driving power of each bogie is stronger. And a large drive can be replaced by a plurality of small drives, so that the maintenance cost is saved. And the space in the middle of the whole bogie is increased, so that the maintenance space is enlarged, and the maintenance is more convenient.

This invention relates to a modified zero-valent iron / biochar composite material with oxygen-rich vacancies and its application. The modified zero-valent iron / biochar composite material comprises a biochar carrier and zero-valent iron loaded on the biochar carrier. The surface of the zero-valent iron is coated with sulfur-containing iron compounds and / or boron-containing iron compounds, and the surface of the zero-valent iron contains abundant oxygen vacancies. The modified zero-valent iron / biochar composite material is specifically prepared by the following method: dispersing the biochar carrier and zero-valent iron in oxygen-free water and grinding; adding a sulfur source or boron source to the ground suspension, stirring and grinding thoroughly, and drying; subsequently soaking in a reducing solution, followed by high-temperature calcination and cooling to obtain the modified zero-valent iron / biochar composite material. Compared with the prior art, the modified zero-valent iron / biochar composite material prepared by this invention can be used synergistically with compound oxidants to achieve effective remediation of organically contaminated soil.

The light-weight aluminum alloy profile machining cooling device comprises a water storage base, a cooling chamber is fixedly installed on one side of the top of the water storage base, an inlet and outlet is formed in one side of the cooling chamber, a material containing box is arranged on one side of the cooling chamber, and a baffle is fixedly connected to one side of the material containing box; a water outlet groove is formed in the bottom of the material containing box. According to the light-weight aluminum alloy profile machining cooling device, through the design of the cooling chamber, the storage box, the baffle, the motor, the screw, the nut plate, the driving wheel, the driven wheel and the belt, the motor drives the driving wheel to rotate, and the belt drives the driven wheel and the screw to rotate synchronously; the nut plate, the baffle connected with the nut plate and the material containing box are pushed to stably enter and exit from the cooling chamber according to the threaded connection principle, manual carrying is not needed, manpower is saved, operation convenience is guaranteed, the stability and safety of sectional materials in the cooling process are guaranteed, and sectional material damage or safety accidents caused by misoperation or equipment failures are avoided.

The utility model discloses a novel rotary pipeline robot structure relates to robot technical field, including initiative knot, the initiative knot is provided with battery knot and control knot, the initiative knot, battery knot and control knot are connected through the connector between, initiative knot: contain initiative knot mounting bracket, first locking screw, initiative wheel frame, initiative wheel, initiative knot shell, second locking screw, rear initiative wheel frame, rear initiative wheel, third locking screw and double -output shaft drive motor, the surface of initiative knot mounting bracket is sleeved with initiative knot shell, the left and right two ends of initiative knot shell are fixed in the left and right two ends of initiative knot mounting bracket surface through the second locking screw of uniform distribution, the inside installation of mounting bracket has double -output shaft drive motor, the left and right sides of initiative knot mounting bracket inside are provided with initiative wheel frame and rear initiative wheel frame respectively, simple and reliable structure, and the two functions of equipment walking and shock attenuation are realized simultaneously to all -in -one wheel frame.

The present invention discloses an acid mist purification treatment machine based on alkali solution neutralization, including a treatment tube and a support frame, wherein the treatment tube is arranged inside the support frame and fixedly connected to the inner wall of the support frame, and one side of the bottom of the treatment tube is connected to an external alkali solution storage device through a connecting pipe, and further includes: an air intake device, which is arranged inside the treatment tube, and the air intake device is used to discharge the fly to be treated into the treatment tube, and the air intake device is fixedly connected to the inner wall of the treatment tube through a bracket, and the air intake end of the air intake device penetrates the treatment tube and extends to the outside of the treatment tube; a spray device, which is arranged on the top of the treatment tube, and the spray device is used to spray the alkali solution into the treatment tube after atomization. The present invention relates to the field of acid mist purification technology. The acid mist purification treatment machine based on alkali solution neutralization facilitates the alkali solution to be evenly contacted with the waste gas, thereby achieving a better effect of removing the acid mist in the waste gas.

The invention discloses a sound production unit, which comprises a basin stand, a magnetic circuit assembly, an inner voice coil, an outer voice coil, a diaphragm assembly and a centering disk, and is characterized in that the magnetic circuit assembly is connected with the basin stand and comprises a yoke, and a central magnetic structure and an edge magnetic structure which are respectively arranged on the yoke; the central magnetic structure comprises lower central magnetic steel, a central washer, upper central magnetic steel and an upper magnetic conductive cover which are sequentially connected from bottom to top, the upper magnetic conductive cover comprises a body and a surrounding wall arranged along the edge of the body, and a first gap is formed between the surrounding wall and the upper central magnetic structure; the yoke is provided with a plurality of bosses, the plurality of bosses are arranged around the lower center magnetic steel, a second gap is formed between the bosses and the lower center magnetic steel, and the first gap and the second gap are communicated to form an inner side magnetic gap; the edge magnetic structure is arranged on the outer side of the boss, and an outer side magnetic gap is formed between the edge magnetic structure and the boss; the vibrating diaphragm assembly is connected with the basin frame, the upper magnetic conductive cover and the outer voice coil; the centering disk is connected with the inner voice coil, the outer voice coil and the frame. The sounding unit is novel in structure, thin in thickness and high in performance.

The invention discloses a method for recovering silver from silver-containing waste catalysts. The method comprises the following steps: loading the silver-containing waste catalysts into a multi-stage series leaching column, adding a nitric acid solution to the top of the first-stage leaching column for leaching, and flowing out from the bottom of the last-stage leaching column, collecting the flowing silver nitrate leaching solution in sections, returning the silver nitrate leaching solution with a lower concentration to the first-stage leaching column for cyclic leaching, and obtaining metallic silver through precipitation and reduction of the silver nitrate leaching solution with a higher concentration; when the leaching of the silver-containing waste catalyst in the first-stage leaching column is completed, removing the first-stage leaching column and loading a new silver-containing waste catalyst, connecting the first-stage leaching column to the bottom of the last-stage leaching column as a new last-stage leaching column, and the second-stage leaching column as a new first-stage leaching column, and so on. The method has a short silver recovery process for silver-containing waste catalysts, low cost, and a silver recovery rate greater than 99.8%, and a silver ingot purity of ≥99.95%.

The utility model discloses a positive and negative pressure integrated powder particle vacuum sending device which comprises a pressurization assembly, a negative pressure assembly, a dust removal assembly and a vacuum sending tank assembly, the pressurization assembly is connected with the bottom of the vacuum sending tank assembly, the dust removal assembly is arranged at the top of the vacuum sending tank assembly, and the negative pressure assembly is communicated with the vacuum sending tank assembly through the dust removal assembly. The positive and negative pressure conveying device has the advantages of being high in working efficiency, capable of preventing dust diffusion, clean in conveying environment, capable of preventing pollution, energy-saving, efficient, capable of achieving efficient conveying, accurate in control, wide in application range and capable of achieving positive and negative pressure conveying.

The utility model relates to the technical field of snowmaking machines, and discloses a double-air-duct crawler snowmaking machine which comprises crawler assemblies, air duct assemblies, nozzle assemblies and a vehicle body frame, the crawler assemblies are fixed to the two sides of the bottom of the vehicle body frame, the air duct assemblies are rotationally arranged on the upper side of the vehicle body frame, and the nozzle assemblies are arranged on the lower side of the vehicle body frame. The nozzle assembly is fixedly arranged at one end of the air duct assembly, the air duct assembly comprises two air ducts and a connecting assembly, the connecting assembly comprises a connecting rod and a pushing electric cylinder, the two ends of the connecting rod are rotationally connected with mounting plates respectively, and the mounting plates are fixed to the bottoms of the two air ducts respectively. The connecting rod is rotationally connected with the pushing electric cylinder, and the bottom of the pushing electric cylinder is fixed to the vehicle body frame. The vehicle body frame is stable in structure, other parts are evenly distributed and fixedly installed on the vehicle body frame, the whole stability of the snowmaker is high, the double air ducts are arranged, the directions of the double air ducts can be adjusted together, the snowmaking amount in unit time is increased, and the snowmaker can meet various different snowmaking environments.

The invention discloses a mahjong machine and a card picking and transporting system, a card loading component, a card loading method and a mahjong card sorting method. The card loading component comprises a card loading bracket, a card loading slot and a card loading pusher are arranged on the card loading bracket, the card loading slot is curved in an arc shape and the bending angle is greater than 180°, the card feeding direction and the card discharging direction are at an angle of 45° to 90°, the card loading pusher is driven by a card loading drive mechanism to move from the outside of the card feeding port to the card discharging port and then return to the outside of the card feeding port; the card loading drive mechanism comprises a card loading chain and a card loading sprocket, the card loading pusher is installed on the card loading chain, the chain length of the card loading chain is greater than the total length of the mahjong cards stored in the card loading slot and the running track of the card loading chain matches the running track of the mahjong cards in the card loading slot, and the card loading sprocket is connected to the card loading motor by transmission. In this scheme, the card loading drive mechanism adopts a chain driving mechanism, the card loading pusher is directly fixed on the chain link of the card loading chain, and the chain driving force is large and the operation is stable.

The utility model discloses a kind of diversion structure of parallel double-impeller cross-flow fan, including first impeller, second impeller, guide vane, two volutes and support seat, the first impeller, second impeller, guide vane and two volutes are connected between two support seats, and the first impeller and second impeller are arranged in parallel symmetry, the guide vane is set between the first impeller and second impeller, two the volute is symmetrically set in the lower end outside of the first impeller and second impeller, and the upper end of the guide vane and volute is set as air inlet, the lower end of the guide vane and volute is set as air outlet, the air inlet and the air outlet are communicated. The diversion structure of the utility model solves the problem that the wind speed, wind pressure of existing cross-flow fan is smaller, and the stiffness of overlength impeller is insufficient and the air outlet is not uniform, significantly improves the performance and efficiency of fan.

The utility model relates to a hydraulic base which comprises a base body, a hydraulic flow channel is arranged in the base body, and the hydraulic flow channel comprises a hydraulic pump port connected with a hydraulic pump, a hydraulic motor port connected with a hydraulic motor and a channel enabling the hydraulic pump port and the hydraulic motor port to be communicated. And the channel is a round channel which is formed by drilling and has a smooth and straight inner wall. The utility model further relates to a wheel-side hydrostatic transmission continuously variable transmission which comprises a shell, a hydraulic pump, a hydraulic motor and a transmission gear set are arranged in the shell, and the hydraulic pump and the hydraulic motor are installed on the hydraulic base. According to the scheme, the hydraulic base and the wheel-side hydrostatic transmission continuously variable transmission have the advantages of being easy to manufacture, small in resistance of a liquid flowing channel and high in transmission efficiency, and are stable in performance and longer in service life.

The invention relates to the technical field of laser cutting, in particular to a stable clamping and guiding mechanism of a laser cutting machine for steel pipe machining, and solves the technical problems that although an existing clamping structure in the prior art can clamp and rotate a steel pipe, in the actual operation process, the steel pipe cannot be guaranteed to rotate, and the clamping and guiding mechanism cannot stably clamp the steel pipe. And movement adjustment can be rapidly and stably carried out in the horizontal direction. A stable clamping guide mechanism of a laser cutting machine for steel pipe machining comprises a machine tool outer cover, conical covers are arranged at the two ends of the machine tool outer cover, one end of each conical cover is connected with the side wall of the machine tool outer cover and communicates with the interior of the machine tool outer cover, and the other end of each conical cover is connected with a communicating pipe used for being connected with air source equipment. The method has remarkable effects in the aspects of improving the precision and efficiency of steel pipe laser cutting and improving the operation environment, and makes important contributions to the technical progress of the steel pipe machining industry.

This utility model discloses a grain storage container equipped with a novel grain discharging device. The container includes a grain storage container with a grain discharging port on each of its two opposite side walls. A bidirectional grain pushing mechanism is provided between the two grain discharging ports inside the container. The bidirectional grain pushing mechanism includes a bidirectional drive assembly, a sprocket assembly, and multiple pusher plate assemblies arranged on the sprocket assembly. The bidirectional drive assembly drives the sprocket assembly to move the multiple pusher plate assemblies in both directions to push grain out from either discharging port. This utility model has the advantages of simple and compact structure, high degree of intelligence and automation, safe and reliable unloading, high unloading efficiency, and strong operational adaptability.

The invention belongs to the technical field of composite nanomaterials, and relates to a preparation method of a copper nanocluster modified silver bromide nanoparticle / titanium dioxide photocatalyst, which comprises the following steps: mixing a copper source and a silver source in deionized water to form a Cu ion adsorbed AgCl (Cu / AgCl) turbid solution; the preparation method comprises the following steps: dispersing TiO2, ascorbic acid, polyvinylpyrrolidone and potassium bromide in deionized water, carrying out uniform ultrasonic treatment, transferring into an oil bath, stirring, heating, adding a Cu / AgCl turbid solution, carrying out a reaction, washing and removing impurities, and thus obtaining the TiO2 / AgCl composite material. The photocatalyst disclosed by the invention is applied to photocatalytic conversion of CO2 and H2O to prepare C2H4 and H2O2. Through an ion exchange process enhanced by electrostatic interaction, AgBr nanoparticles modified by Cu nanoclusters are directionally modified on a TiO2 substrate. A spatial confinement structure and a Cu / AgBr / TiO2 ternary mixed structure have a cascaded multi-step charge transfer mechanism, strong charge driving force is provided for the catalyst, in addition, adjacent heteronuclear sites of Cu and Ag provide a high-quality synergistic catalysis effect for the whole reaction, and C2H4 and H2O2 are prepared by converting CO2 and H2O through light driving.

The present invention discloses an excavator loader and an integral frame thereof, comprising a frame assembly (100), a hydraulic four-wheel active steering system, a power system (300), a cab assembly (400), an excavation mechanism assembly (500), a loading mechanism assembly (600), an operating mechanism assembly (800), and an electrical system (900). The hydraulic four-wheel active steering system comprises a driving steering system (200) and a hydraulic system (700); the driving steering system (200), the power system (300), the hydraulic system (700), the operating mechanism assembly (800), and the electrical system (900) are all installed on the frame assembly (100) and powered by the power system (300). The integral frame of the excavator loader of the present invention has good stability, strong load-bearing capacity, small turning radius, and can increase the service life of the multifunctional engineering vehicle, thereby improving the overall cost performance of the vehicle.

The invention discloses a sound production unit, which comprises a basin stand, a magnetic circuit assembly, an inner voice coil, an outer voice coil, a diaphragm assembly and a centering support chip, and is characterized in that the magnetic circuit assembly is connected with the basin stand and comprises a yoke, and a central magnetic structure, a concave magnetic structure and an edge magnetic structure which are respectively arranged on the yoke; the center magnetic structure comprises lower center magnetic steel, a center washer, upper center magnetic steel and an upper magnetic conductive cover which are sequentially connected from bottom to top. The upper magnetic conductive cover comprises a body and a surrounding wall arranged along the edge of the body. The number of the concave magnetic structures is two, the two concave magnetic structures are symmetrically arranged on the two sides of the enclosure bulkhead, a passing opening is formed between the two concave magnetic structures, and an avoiding notch communicated with the passing opening is formed in the bottom end of the enclosure bulkhead. The edge magnetic structure is positioned on the outer side of the concave magnetic structure; the vibrating diaphragm assembly is connected with the basin frame, the upper magnetic conductive cover and the outer voice coil; the centring disk comprises inner installation parts which are connected in sequence, and the inner installation parts are connected with the outer voice coil and the inner voice coil. The sounding unit is novel in structure, thin in thickness and high in performance.

The utility model discloses a lithium battery transportation protection device, which relates to the technical field of lithium battery transportation and comprises a transportation box, a protection cover is movably mounted on the top surface of the transportation box, a lifting mechanism is fixedly mounted in the transportation box, and a bearing assembly is movably mounted on the surface of the lifting mechanism. And a clamping mechanism is movably mounted on the surface of the bearing assembly. By arranging the lifting mechanism, the bearing assembly can be movably mounted, and meanwhile, the height of the bearing assembly can be adjusted according to requirements, so that lithium batteries can be conveniently placed and taken in the transport case body, and the adverse effect of overweight downward movement on the rotating rod is effectively reduced; the mounting plate is mounted on the bearing plate, and the spring is connected with the auxiliary plate, so that the spring is matched with the auxiliary plate to clamp the other two surfaces of the lithium battery after the clamping plate is controlled by driving the matched screw to clamp the lithium battery, and the deviation range of the lithium battery is effectively limited.

The voice coil motor comprises a magnet yoke, a magnet structure and a driving coil, the magnet structure is arranged on the magnet yoke, the magnet structure comprises two magnetic circuit assemblies which are arranged at intervals in the vertical direction, and each magnetic circuit assembly comprises two magnets which are arranged at intervals in the vertical direction. The magnetic poles of the sides, close to each other, of the two magnets are different, and a magnetic gap is formed between the two magnets. The driving coil comprises two wire sets which are oppositely arranged in the vertical direction, one wire set is located in a magnetic gap formed by the two magnets of one magnetic circuit assembly, the other wire set is located in a magnetic gap formed by the two magnets of the other magnetic circuit assembly, the two magnets can generate magnetic fields which are strong enough, and therefore the magnetic field intensity of the two magnets can be improved. When the moving stroke of the driving coil is long, the driving coil can be located in a strong magnetic field, the two side portions of the driving coil are synchronously driven, the driving force is strong, and the problems that an existing VCM motor is limited by the size, and the design stroke of the VCM motor is relatively small are solved.

The invention discloses an air inlet type sofa fabric sanding, finishing and filtering device, which comprises an L-shaped air inlet pipe, an air outlet pipe, an air outlet pipe, an air inlet pipe, an air outlet pipe, an air outlet pipe and a filter screen, wherein the air inlet pipe is provided with an air inlet at the upper end and an air outlet at the transverse end; the sanding part is arranged at the bent position of the air inlet pipe and communicated with the interior of the air inlet pipe, a fabric body is conveyed in the air inlet pipe, and the sanding part and the outer side of the fabric body are extruded; the filtering part is arranged at the transverse position of the air inlet pipe, a filter screen is arranged on the filtering part in a transmission mode, and the air outlet of the air inlet pipe is blocked by the filter screen. Fluff can be adhered to the inclined side of the filter screen, the filter screen performs transmission rotation, so that the fluff on the filter screen moves outwards, extrudes the adhesion plate and is adhered to the adhesion plate, in the sanding process, the fluff is filtered and collected, and meanwhile, the air blowing effect at the air inlet has stronger pushing force compared with the dust collection effect, so that the dust removal effect is improved, and the dust removal efficiency is improved. And the fallen fluff is enabled to move towards one direction.

The utility model discloses a middle pier flat rotation driving device, including the bearing frame, the inside of bearing frame is installed with lubricating oil storage jar and PLC controller in proper order, and the top of lubricating oil storage jar is installed with oil pump. The utility model runs, and the PLC controller controls the oil pump to start, can import lubricating oil to the middle oil distribution main pipe inside of the driven gear rotation through the effect of swivel joint, then, lubricating oil will flow to the outer edge of driven gear through four first oil distribution branch pipes, this can realize the lubrication protection between driven gear and driving gear, and lubricating oil will flow to the inside of corresponding annular limit sliding cavity at the edge of the rotation body for middle pier through four second oil distribution branch pipes, realizes the lubrication protection between annular limit sliding cavity and limit sliding block, and then through the comprehensive initiative lubrication of the moving friction part on the device, the fluency of device rotation drive is improved, also avoids the friction loss, prolongs the service life of device.

The invention discloses a capillary microchannel heat exchanger capable of reducing flow resistance and a preparation method of the capillary microchannel heat exchanger, and relates to the technical field of heat exchange equipment. The hot layer sets and the cold layer sets are sequentially arranged in a staggered and stacked mode and are separated through partition plates. Each of the cold layer group and the hot layer group comprises an inlet section group, a buffer confluence cavity and an outlet section group; the buffer confluence cavity is positioned between the inlet section group and the outlet section group; and nickel-plated phosphorus coatings are arranged on the inlet capillary tubes arranged in the inlet section group and the outlet capillary tubes arranged in the outlet section group. The preparation method comprises the following steps: S1, obtaining various parameters of related equipment through simulation calculation; s2, assembling the single layer according to the obtained parameters, and spraying a nickel-phosphorus plating coating; s3, sequentially arranging the interlayers; and S4, vacuum diffusion welding is conducted after overall assembly is completed, and the performance of the heat exchanger is tested. Through the arrangement, flow resistance can be effectively reduced, and heat exchange efficiency is improved.

The utility model relates to water treatment technical field, and disclose a kind of durable water pump for sewage treatment, including support base, motor structure, shaft coupling sealing box, rotating shaft fixed structure, water pump and sewage inlet and outlet structure, motor is stably installed by motor support frame, output shaft is connected rotating shaft through shaft coupling, rotating shaft is supported by high-precision ball bearing, drive wear-resistant impeller in water pump rotation, water pump adopts side water inlet, top water outlet design, cooperate with self-cleaning grid filter screen and gradually expanding flow channel, effectively reduce blockage and energy loss, shaft coupling sealing box uses anticorrosive sealing structure, rotating shaft support system is equipped with heat dissipation channel and split type maintenance design, water pump support frame uses modular damping structure, overall rigidity installation ensures operating stability.