41results about How to "The recycling process is convenient and fast" patented technology

The invention relates to a method for manufacturing a magnetic loading type nanometer catalyst TiO2/Fe2O4. The method comprises the following steps of: using ferrous sulfate, ferric sulfate and ammonia as raw materials to prepare black nanometer Fe3O4 particles with good dispersivity through a coprecipitation process; coating one layer of TiO2 with optical catalyst on the Fe3O4 surface by a sol-gel process, and forming a TiO2/Fe3O4 composite material with a core-shell structure; carrying out heat treatment and recycling to obtain a magnetic loading type nanometer catalyst TiO2/Fe2O4. The catalyst not only has good optical catalytic activity, but also can utilize the outer magnetic field to realize convenient and quick recovering and reutilization, thereby decreasing the cost of waste water treatment and realizing the practical application of nanometer TiO2 in wastewater treatment.

The invention discloses an internally-arranged automatic coating device and method based on 3D printing of precious metal. The device comprises a forming chamber, a powder laying mechanism and a datum horizontal plate; a closed powder storage box is arranged below a powder outlet of a powder box body, and a quantitative powder feeding mechanism is arranged between the powder outlet of the powder box body and the closed powder storage box; a structure shaped like a Chinese character 'hui' is formed by the enclosure of the peripheral side walls of the closed powder storage box, and two powder coating scrapers are installed on the front side wall and the rear side wall of a lower opening in the powder laying direction; the peripheral side walls of the closed powder storage box, the two powder coating scrapers and the datum horizontal plate form powder storage space; the powder coating scrapers flattens powder from the powder box body uniformly back and forth with the datum horizontal plate as the datum plane. The device integrates the quantitative powder feeding function and the efficient powder laying function and can effectively increase the utilization rate of the precious metal and reduce material waste when applied to the 3D printing process of the precious metal.

A composite nanoparticle as the magnetic core carried photocatalyst is composed of the magnetic Fe3O4 nanoparticle as core, SiO2 coated on the surface of said core, and TiO2 carried by said SiO2/FeO4 particle, and is prepared by chemical codepositing method. A method for using said photocatalyst to clean sewage features that the organic pollutants in sewage is deeply oxidized by it to generate CO2 and H2O. Its photocatalyzing apparatus is composed of high-pressure Hg lamp, quartz sleeve tube, bias electrode, condensing water inlet and outlet, gas distributing plate, said photocatalyst, ring reaction chamber, organic class container, sampling opening and aerating unit.

The invention discloses a magnetically supported titanium dioxide photocatalyst and a preparation method thereof, belonging to the technical field of material preparation. A solvothermal process is used for obtaining a dimension-adjustable ferroferric oxide spherical particles, and the pH value, reaction temperature, reaction time and other experimental parameters are regulated to control the hydrolysis of tetrabutyl titanate, so that the tetrabutyl titanate is uniformly supported on the surface of the ferroferric oxide magnetic nucleus, thereby preparing the hexagonal crystal form magnetically supported titanium dioxide photocatalyst. The magnetically supported titanium dioxide photocatalyst has the advantages of controllable preparation technique, high safety and reliability and high yield, can be used for quickly catalyzing the degradation of pollutants, and can be easy in industrialization production.

The invention provides a three dimensions printing system and a residual material recovery and nozzle cleaning device thereof. The three dimensions printing system comprises a nozzle, a connection pipe and a material tank and the material tank is provided with a discharge valve. The residual material recovery and nozzle cleaning device comprises an air pump, a water pump, a collection tank and a controller. A first end of the connection pipe is connected to the nozzle and a second end of the connection pipe is communicated with the material tank by the discharge valve. The air pump is communicated with the nozzle. The water pump is communicated with the second end of the connection pipe. The controller is respectively connected to the nozzle, the discharge valve, the air pump and the water pump and controls operation of the devices. The residual material recovery and nozzle cleaning device utilizes an air inflation method to realize primary flushing of the nozzle and the connection pipe, returns the residual printing material back to the material tank by air flows thereby realizing printing material recovery and recycle, and has the advantages of simple and fast recovery method, time and labor saving, waste reduction and cost saving. The residual material recovery and nozzle cleaning device utilizes a water feeding method to realize secondary flushing of the nozzle and the connection pipe thereby avoiding deposition of a less amount of the residual printing material in the nozzle and the connection pipe after air-operated flushing.

The present invention provides a book recycling and selling robot and a control method thereof. The book recycling and selling robot comprises a shell, a book box and a display screen; the display screen is mounted on the front surface of the shell; the display screen is a touch screen; the front surface of the shell is provided with a camera and a first bar code scanning device; the book box is arranged at the bottom of the shell; the book box is provided with a bar-shaped book feeding hole; people can throw books into the book box through the bar-shaped book feeding hole; a book storage device and a book movement device are arranged in the book box; the book storage device is used for storing books; the book movement device is used for moving books into the book storage device or moving books out from the book storage device; and a second bar code scanning device is arranged in the book movement device. The book recycling and selling robot further comprises a controller; and the controller is connected with the book movement device, the display screen, the camera, the first bar code scanning device and the second bar code scanning device. With the book recycling and selling robot and the control method thereof of the invention adopted, the recycling and selling of books can be realized, and the quality of book recycling can be ensured, and the dissemination of knowledge can be benefitted.

A disclosed automatic sludge cleaning and drying device for hydraulic engineering comprises a bottom plate, a control box, a hoisting mechanism and a sludge treatment mechanism are arranged on one side of the bottom plate, a mounting plate and a sludge suction mechanism are arranged on the other side of the bottom plate, and the sludge treatment mechanism comprises a dewatering box, a filtering box and a collecting box. The sludge suction mechanism comprises a movable disc, a first connecting disc, a second connecting disc, a motor and a rotating shaft, the sludge suction mechanism is further provided with a drill bit and a filter screen to crush sludge and filter impurities in the sludge, and the sludge is sucked and discharged into a water seepage plate to be dewatered and then discharged into the collecting box to be sterilized, disinfected and dried. Water generated by dehydration treatment is filtered and adsorbed by the filtering box and then discharged into a water body, waste of water resources is avoided, sludge can be taken out and recycled more conveniently and quickly by arranging a collecting frame, and the whole device is high in automation degree, good in sludge suction, cleaning and drying treatment effect, higher in efficiency and higher in practicability.

The invention relates to the field of buildings, in particular to a working cable recoverable center type anchor cable and an application method thereof. The anchor cable is composed of anchor heads,a working cable and a recovery cable. Each anchor head comprises a shell hood and a bearing plate, wherein an anchor ring is mounted on the bearing plate and is internally provided with a cavity; a center column body is arranged on the upper side of the cavity and is of a columnar integral structure; the lower side of the cavity is provided with a reserved cavity; a locking piece is arranged between the center column body and the inner sidewall of the anchor ring; the inner wall of the anchor ring is provided with a limiting groove; one end of the locking piece is located in the limiting groove to lock the center column body and the anchor ring, and the other end of the locking piece is maintained and fixed through the recovery cable in the radial position; as the recovery cable is pulledout, the locking piece can withdraw in the radial direction to cancel locking between the center column body and the anchor ring, and the center column body can move towards the reserved cavity to destroy tapered fixture accommodating spaces; and when clamping pieces lose clamping force, the working cable can be pulled out.

The invention relates to a riverway floating object clearing device. The device comprises two fixing seats, sieve plates are arranged between the two fixing seats, the sieve plates comprise main sieve plates, supporting frames and top plates, a front plate is fixedly arranged on the surfaces of the front sides of the fixing seats, a detection plate is fixedly arranged on the surface of the front side of the front plate, mounting blocks are uniformly arranged on the top surface of the detection plate, elastic rods are fixedly arranged at the tops of the mounting blocks, and conveying tracks are arranged at the tops of the fixing seats. According to the riverway floating object clearing device, the fixing seats, the sieve plates, the conveying tracks, driving seats and other parts are arranged, the sieve plates are positioned between the two fixing seats, garbage passing through the fixing seats is filtered and isolated, and the sieve plates can be grabbed to drive the sieve plates to move through the matching relation between hydraulic lifting rods and mechanical grippers, so that the sieve plates can be moved to the river bank garbage treatment position, the two sieve plates work alternately, and the device can quickly and conveniently recover and clear the garbage.

The invention relates to a confining pressure cavity hydraulic oil recovery device which comprises an oil pressure cavity barrel, an oil pressure cavity base, a hydraulic oil recovering control valve, a hydraulic oil recovering pipe and a hydraulic oil recovering barrel; the oil pressure cavity barrel is a thick-wall cylinder with an opening in the lower end, and comprises an oil pressure cavity barrel inner wall and an oil pressure cavity barrel outer wall; the oil pressure cavity base comprises an upper cylinder body of the base and a lower cylinder body of the base, a hydraulic oil recovering hole is formed in the surface of the lower cylinder body of the base, and meanwhile a hydraulic oil recovering channel is formed in the base; and the hydraulic oil recovering barrel is communicated with the hydraulic oil recovering channel through the hydraulic oil recovering hole, a recovering control valve and the hydraulic oil recovering pipe. A complete recovering device is formed by the recovering channel, the recovering hole, the recovering control valve, the recovering pipe and the recovering barrel, and the confining pressure cavity hydraulic oil recovery device is suitable for liquid recovering and reusing, and is particularly suitable for indoor test liquid recovering. The confining pressure cavity hydraulic oil recovery device has a certain application prospect on tri-axial tests of on-site rock mass samples in the field of ground, tunnels, bridges, metros and the like.

The invention discloses a portable short-distance cable taking-up and paying-off device. The portable short-distance cable taking-up and paying-off device comprises a moving bottom frame and a rotating hand-pulling frame. Hand-pulling frame chucks are arranged at the top end of the moving bottom frame. The bottom end of the moving bottom frame is provided with a bottom frame roller in a clamping mode. A fixed shaft penetrates between the adjacent hand-pull frame chucks. A protruding limiting groove A is formed in one side of the hand-pulling frame chuck. One end of the fixed shaft is fixedly provided with a rotating handle. The outer side of the fixed shaft is nested in a sleeve rod. The center of the sleeve rod is provided with a rotating contraction rod in a clamping mode. One side of the sleeve rod is provided with a protruding limiting groove B. One side of the rotating contraction rod is provided with a contraction rod limiting protrusion in a clamping mode. According to the portable short-distance cable taking-up and paying-off device, a moving frame and a cable recovery device are of foldable structures; and after the moving frame is folded, the cable recovery device can besupported. The whole device is simple in structure. Cable moving and recovery are very quick and convenient. The portability is better. The portable short-distance cable taking-up and paying-off device can be more conveniently used in factories, building sites and the like for short-distance cable paving. The workload of workers is reduced, and time and labor are saved.

The invention discloses an intelligent plant protection rail post suitable for multiple occasions and an application method of the intelligent plant protection rail post. The intelligent plant protection rail post comprises a body frame, a lifting structure portion, a rail line connecting portion and an intelligent processing system portion. A cylindrical container body is arranged at the bottom end of the body frame, and a round through hole is formed in the middle of the upper bottom face of the body frame. The intelligent plant protection rail post can automatically rise, so that the intelligent plant protection rail post adapts to plant growth or object change and meets varied isolation protection requirements. The lifting structure portion delays corrosion, so that the service life and the service life period of the rail post are prolonged. Meanwhile, infringement of harmful birds and pests to vegetation is effectively avoided, intelligent harmful bird and pest prevention is achieved, and damage of organisms to the ecological environment or protection objects is reduced. By means of voice prompting and emergency lighting, accidental entering of irrelevant personnel is effectively reduced. By means of synchronous lifting design, the rail post and rail lines are conveniently and rapidly mounted and recycled, meanwhile, the size of the rail post is reduced, and the rail postis convenient to move and transport. The rail line connecting portion can meet the requirements of dividing a protection region. The rail lines are mutually independent, the maintenance, overhaul, repair and replacement cost is reduced, and problem positions are known in real time.