41results about How to "Guaranteed surface cleanliness" patented technology

The invention discloses an anti-static polybutylene terephthalate (PBT) material with excellent comprehensive performance. The anti-static PBT material with excellent comprehensive performance comprises the following components in part by weight: 40 to 70 parts of PBT resin, 20 to 40 parts of glass fiber, 1 to 7 parts of carbon nanotube, 0.1 to 0.5 part of antioxidant, 0.1 to 0.5 part of lubricating agent and 1 to 5 parts of toughening agent. The carbon nanotube serves as a conductive filler of the PBT, so the material has an excellent anti-static property and the mechanical property of the material is improved; the glass fiber is used for reinforcing the PBT material, so the notch sensitivity of the PBT is overcome; and the mechanical property of the material is improved, high anti-static property is achieved, and the diversified requirement of the market is met. The processing technology is simple; the product quality is stable; the comprehensive performance is excellent; and a good market prospect is achieved.

The invention discloses a preparation method for producing high-toughness battery aluminum foil through a short-process cast-rolled blank. The preparation method sequentially comprises the proceduresof smelting, cast rolling, cold rolling, homogeneous high-temperature treatment, intermediate rolling, longitudinal shearing edge cutting, intermediate annealing, finish rolling, foil rolling, coiling, finished product rolling, slitting and charging annealing. Compared with existing aluminum alloy material, the aluminum foil is high in barrier property, excellent in deep drawing property, good indeformability, high in puncture resistance, good in sealing property, fine and smooth in surface, high in cleanliness and short in process, meanwhile, through an innovative segmented multistage mode,online degassing and a filtering purifying device, the content of hydrogen and oxidized slag inclusions in molten aluminum is effectively reduced, and quality defects, caused by the generation of holes and pinholes, of the battery aluminum foil are prevented; the aluminum foil has the advantages of good sealing performance, no liquid leakage, safety in use and the like; the technical requirementsof the battery aluminum foil with high deep drawing forming property, high cleanness, high toughness are met; and the aluminum foil has important practical value in production of a new energy lithiumbattery industry.

The invention relates to the technical field of machining, and discloses a plate polishing paint spraying device for machining. The plate polishing paint spraying device comprises a first motor, a second motor, a third motor, a telescopic cylinder, a polishing machine, an air heater and a box body, wherein the output end of the second motor is fixedly connected with a third bevel gear, the third bevel gear is meshed with a fourth bevel gear, a plurality of rails are arranged on the lower side of the box body, a plate conveying mechanism is arranged on each rail, each plate conveying mechanismcomprises a supporting plate frame, a threaded shaft is rotatably connected with the upper side of each supporting plate frame, the threaded shafts are in threaded connection with a plurality of supporting frames, threads of the threaded shafts are symmetrically distributed about the center of the supporting frames, pressing bolts are arranged on the upper sides of the supporting frames, and a plurality of sliding rails are arranged on the upper side of the interior of the box body. The plate polishing paint spraying device is simple in structure, can realize polishing, paint spraying and paint drying processes of the plate, is high in automation degree, and high in grinding, paint spraying and paint drying efficiency, short in use time, capable of saving working time, and low in manufacturing cost, and has the usable value in the technical field of machining.

The invention relates to a dispensing tool, which is used for fixing a mobile phone case. The dispensing tool comprises a fixing assembly, wherein the fixing assembly comprises a connecting plate and a product placing plate; a plurality of vacuum suction nozzles, a positioning pin and a plurality of positioning blocks are arranged on the connecting plate; the dispensing tool also comprises a fixing frame, a positioning plate and a rotating part; the fixing frame comprises a base, a support post and a movable plate; the middle part of the back side of the movable plate is provided with a first accommodating cavity; the middle part of the front side of the positioning plate is provided with a second accommodating cavity; the rotating part comprises a rotating shaft and at least two bearings; one bearing is accommodated in the first accommodating cavity; one bearing is accommodated in a second accommodating cavity, so that the fixing assembly can rotate relative to the positioning plate and the movable plate. The dispensing tool provided by the invention has the advantages that the angle of the product placing plate can be regulated through the fixing frame, so that the mobile phone case can be vertically or tipsily placed; glue water seeps into a seam of the mobile phone case through gravity; the glue water is saved; the surface cleanness degree of the inner cavity of the mobile phone cavity is ensured; the contact area of the glue water and the air is increased; the bonding speed is accelerated.

The invention provides a method for cleaning a silicon wafer. The method for cleaning the silicon wafer comprises the steps of roughly cleaning, soaking, cleaning and drying. The silicon wafer is cleaned through positive and negative rotation, so residual grinding sand and impurities attached to the silicon wafer can be removed effectively and the surface cleanliness of the silicon wafer is guaranteed. In addition, a large cleaning device and a great amount of cleaning solution are not required and a large amount of electric power and a large amount of time are not required, so the method has the advantages of effectively saving space, saving cost, saving energy, saving time and achieving a good cleaning effect. The method is low in cost, simple in operation and low in environmental pollution.

The invention discloses a method for preparing PCB (Printed Circuit Board) aluminum foils by using cast-rolled slabs. The method comprises the following steps: (1) smelting, casting and rolling 1050 or 1060 aluminum alloys; (2) roughly rolling, intermediately rolling, longitudinally shearing edges; (3) finely rolling; (4) washing and straightening; (5) cutting, checking and packing to obtain PCB electronic aluminum foils. The mechanical property control deltab of PCB electronic aluminum foils prepared by the method is 190-230MPa; the extension ratio of the PCB electronic aluminum foils is larger than or equal to 2%; the surface hardness value is smaller than 60HV.

The invention discloses an anti-static polybutylene terephthalate (PBT) material with excellent comprehensive performance. The anti-static PBT material with excellent comprehensive performance comprises the following components in part by weight: 40 to 70 parts of PBT resin, 20 to 40 parts of glass fiber, 1 to 7 parts of carbon nanotube, 0.1 to 0.5 part of antioxidant, 0.1 to 0.5 part of lubricating agent and 1 to 5 parts of toughening agent. The carbon nanotube serves as a conductive filler of the PBT, so the material has an excellent anti-static property and the mechanical property of the material is improved; the glass fiber is used for reinforcing the PBT material, so the notch sensitivity of the PBT is overcome; and the mechanical property of the material is improved, high anti-static property is achieved, and the diversified requirement of the market is met. The processing technology is simple; the product quality is stable; the comprehensive performance is excellent; and a good market prospect is achieved.

The invention discloses a pulp distribution device of a rice straw decoration plate production line, and relates to the field of utilization of rice straws. The pulp distribution device comprises a supporting frame and a liquid pump, bearings are uniformly and fixedly connected to an inner wall of the supporting frame, rotating shafts are fixedly connected to inner rings of the bearings, conveying rollers are fixedly connected between the rotating shafts, the conveying rollers are movably connected with a conveyor belt, the supporting frame is connected with an ash scraping structure used for removing impurities on the surface of the conveyor belt, an n-shaped frame is fixedly connected to the top of the supporting frame, a sleeve is fixedly connected to the middle end of the top of the n-shaped frame, a middle pipe is fixedly connected to the top of the sleeve, the middle pipe is fixedly connected with an output end of a liquid pump, an input end of the liquid pump is fixedly connected with a pulp-inlet pipe, and the pulp-inlet pipe is connected with an external pulp source. According to the device, the pulp distribution width can be conveniently adjusted according to the width of a plate, and actual usage is facilitated.

A surface treatment method of a gallium arsenide (GaAs) substrate comprises the following steps: (1) thinning the GaAs substrate; 2) uniformly applying pulsed laser to the surface of the GaAs substrate; (3) cleaning the GaAs substrate after pulsed laser irradiation with deionized water; (4) drying the deionized water washed GaAs substrate with hot nitrogen to obtain a clean GaAs substrate. This method is simple, high proces efficiency, without the introduction of irritant chemicals, with the aid of a pulsed laser, deionized water and hot nitrogen can clean the surface of GaAs substrate, The surface of the treated GaAs substrate is free of organic matter and impurity particles, which ensures the quality of interface contact after subsequent metal evaporation, prevents electrode dropping anddevice voltage abnormality, improves product yield and device performance, ensures surface cleanliness to the maximum extent, and improves production efficiency.

The invention discloses a novel self-cleaning type multifunctional industrial fan, and belongs to the field of industrial fan equipment. According to the novel self-cleaning type multifunctional industrial fan, a timing motor controller controls a three-phase motor to enable fan blades to start to rotate, a balancing weight does centrifugal motion away from the timing motor controller under the action of centrifugal force, a cleaning brush head cleans dust on the surfaces of the fan blades, the surface cleanliness is maintained, and the possibility of bacterium breeding is reduced; under the stretching action of a second connecting block, a compression film shrinks, the inner diameter is reduced, and therefore a compression ball is extruded; an atomization spray head atomizes and sprays out disinfectant and clear water, the clear water can wet the dust to enable the dust to be prone to sedimentation, the atomized clear water is prone to vaporization and heat absorption for cooling, theevenly-spread disinfectant can sterilize and disinfect the space, and the healthy air environment is maintained; and the timing motor controller can control the three-phase motor to periodically andintermittently run, a side sliding block is pulled and dragged to reset along a side sliding groove under the elastic force action of an extension spring, and one-time periodic sterilization and cleaning are completed.

The invention relates to a solar cell preparation method. The method comprises the steps of providing a substrate; texturing the substrate and cleaning for the first time to form a textured piece; scribing the textured piece to form a scribing groove; cleaning the textured piece after scribing for the second time, and removing slag generated during scribing; forming cell film layer on the textured piece after scribing and secondary cleaning so as to form a cell piece; and splitting the cell piece along the scribing groove to form a plurality of solar cells. The cell efficiency can be effectively improved.

The invention provides a pulley conveying assembly which comprises a horizontal traveling rail, pulleys, a pulley rack, a hook and brush plates. The pulleys are connected to the pulley rack through rotating shafts. The pulleys are matched to be arranged on the horizontal traveling rail. The hook is fixedly arranged at the bottom of the pulley rack. The pulley rack and the brush plates are connected through connecting rods, and the brush plates are placed in the forward direction or the backward direction of the pulleys. The brush plates are used for cleaning up dust on the horizontal traveling rail. Each brush plate sequentially comprises a fixing plate, an oil cotton layer and a brush, wherein the oil cotton layer is full of lubricating oil and provides the lubricating oil to the corresponding brush. Through the above mode, the pulley conveying assembly is provided, the brush plates are connected to the pulley rack, the brush plates can clean the rail which the pulleys pass through, and thus the surface cleanliness of the rail and the pulleys can be guaranteed. A better maintaining effect is achieved.

The invention provides a machine-made sandstone production workshop coarse aggregate flushing and pitch diameter online monitoring method. The method comprises the following steps: presetting the balance weight ratio and the allowed deviation range of each size fraction of coarse aggregate in an intelligent control center; conveying the coarse aggregate to a flushing detection sieve through a feeding metering sealing-tape machine, and screening and grading the particle size; conveying the aggregate of each size fraction to a finished product conveying sealing-tape machine through different metering sealing-tape machines to be mixed and then warehoused; collecting weighing data of the feeding metering sealing-tape machine and all the metering sealing-tape machines after screening in real time by the intelligent control center; calculating the weight ratio of the coarse aggregate of each size fraction and comparing the weight ratio with a preset value, and warehousing the aggregate if the weight ratio is qualified; and if the weight ratio exceeds the allowed deviation range, giving an early warning through the intelligent control center and notifying an operator to perform processing. Intelligent control over the grain size and size fraction and the weight ratio of the coarse aggregate for warehousing is achieved, it is ensured that the gradation of the warehoused coarse aggregate meets the requirement of the next procedure, and a foundation is laid for achieving the overall machining control process of high-quality machine-made sand.

The invention relates to the technical field of circuit boards, anddiscloses a cleaning method of an integrated circuit board. Firstly, compressed air is used for blowing away dust adhering to the surface of the integrated circuit board, and then the surface of the integrated circuit can be fully cleaned in the subsequent cleaning procedure; the integrated circuit board is soaked in a first cleaning solution for ultrasonic cleaning, wherein the first cleaning solution comprises chloroform and alcohol; then the integrated circuit board is washed with first pure water, then the integrated circuit board is blow-dried with compressed air, then the integrated circuit board is subjected to spray cleaning with a second cleaning solution, wherein the second cleaning solution comprises sulfuric acid, hydrogen peroxide and water; and finally, the integrated circuit board is washed with second pure water and then dried, so that the cleaned integrated circuit board is obtained, pollutants such asparticles, organic matter and metal on the surface of the integrated circuit board are removed, and the surface cleanliness of the integrated circuit board is ensured.

The invention relates to the technical field of Chinese cabbage picking and discloses a picking device for Chinese cabbages. The picking device for Chinese cabbages comprises a material box, a righting mechanism, a vegetable reaming assembly and a leaf removing mechanism; the righting mechanism is arranged on one side of the material box and used for conveying Chinese cabbages in a forward swinging mode, the vegetable reaming assembly is movably arranged at one end of the righting mechanism, the vegetable reaming assembly is provided with a movable component, the movable component is used for adjusting positions of the vegetable reaming assembly, such that requirements for different diameters of trunks of different varieties of Chinese cabbages are met; and the leaf removing mechanism is arranged in the material box and used for separating surface leaves of the Chinese cabbages. Through a continuous and compact mechanical structure, the designed Chinese cabbage picking device realizes an automatic picking process of Chinese cabbages, can conduct field adjustment according to diameter values of the Chinese cabbages, meanwhile, can separate surface leaves of the picked Chinese cabbages, ensures surface cleanliness of the Chinese cabbages, reduces manual steps of cleaning the Chinese cabbages, is convenient to use and has available value in the technical field of Chinese cabbage picking.

The invention discloses a blow molding device for plastic packaging bag production, which belongs to the technical field of plastic processing, and comprises a casing. A side casing and an adjusting motor are fixedly installed on the side wall of the casing. A rotating shaft is fixedly installed, and an installation component is fixedly installed at one end of the rotating shaft, which is used for the stable installation of the first forming shell and the second forming shell, and one side of the mounting component is provided with the first forming shell and the second forming shell; in the present invention , by setting a coolant tank outside and through effective linkage design, the coolant in the coolant tank can automatically flow into the molding shell, which can quickly reduce the temperature of the inner surface of the molding shell, which is helpful for high-temperature blow molding After the material is quickly released from the mold, the design is ingenious, and the final expansion effect in the blow molding process of the material can be used to realize the automatic release of the cooling liquid, so as to achieve the purpose of rapid cooling and molding of the blown plastic. The overall use effect of the plastic device.

The invention relates to the technical field of mold cleaning, in particular to a rubber pad mold convenient to clean, which comprises a cleaning base, a rubber pad body is fixedly connected to the interior of a clamping seat, and an upper rod and a lower rod are slidably connected to the inner walls of an upper sliding groove and a lower sliding groove respectively. An upper pressing plate and a lower bottom block are fixedly connected to the connecting ends of the upper rod and the lower rod correspondingly, movable bases are slidably connected to the surfaces of the upper rod and the lower rod correspondingly, a beating plate is fixedly connected to the interior of the upper pressing plate through a spring, and a polishing and cleaning device is arranged in the lower bottom block. The movable base is moved to drive an upper rod and a lower rod which are in sliding connection with the interior of the movable base to drive an upper pressing plate and a lower bottom block to relatively move along tracks of two sliding grooves correspondingly, and the effect that a beating plate in the upper pressing plate is driven to beat a rubber body is further achieved; impurities adhered to the inner wall of the rubber pad body are discharged through vibration generated by flapping, and the automatic cleaning effect is further achieved.

The invention discloses a silicon material recovery cleaning method. The method comprises the step that pure water used during post-treatment is recycled for pre-treatment. By means of the characteristic that the requirement for the cleanliness of the pretreatment water is low, cleaning water used for post-treatment is recycled for cleaning silicon materials during pretreatment, accordingly, the requirement for the cleanliness of pretreatment can be met, and the purposes that the water consumption amount is reduced, the water resources are saved, and the cost is reduced can be achieved. The invention further discloses a silicon material recovery cleaning device.

The invention discloses a surface treatment device for aluminum magnesium alloy die castings, and in particular relates to the technical field of surface treatment. The surface treatment device comprises a rack, a through groove is formed in the top end of the rack, and a base is welded on the edge, close to the through groove, of the rack. A cross beam is arranged at the position, close to the top end, of the inner side of the rack, and the cross beam is welded with rack. A working platform is arranged on the upper surface of the cross beam, and a wire drawing mechanism is arranged on the upper surface of the base. The wire drawing mechanism comprises a group of sliding rods transversely inserted into the base, and transverse transplanting cylinders are fixedly arranged on the outer surfaces of the sliding rods in a sleeving mode. Pressing plates are erected at the two ends in the transverse direction of the top end of the working platform, and pressing cylinders are fixedly arrangedat the two ends in the radial direction of the upper surfaces of the pressing plates through bolts. Compared with the prior art, the surface treatment device is not limited by dies and ensures that the wire drawing area is not limited, so that the wire drawing process of the aluminum magnesium alloy die castings is stable, and the wire drawing effect is ensured.

The invention discloses a novel watt-hour meter which is convenient for reading at night, and relates to the technical field of power system metering equipment. Including the watt-hour meter body, a ring-shaped LED light is provided around the reading of the watt-hour meter on the lens of the watt-hour meter, and a mirror cover hinged with one side of the watt-hour meter is also provided on the surface where the lens is located. The mirror cover is opened and closed by means of a motor at one end of the rotating shaft, and the motor and the LED lamp are controlled by a control unit located at one side of the watt-hour meter. The mirror cover on the watt-hour meter can ensure that the lens surface is clean and not damaged. The mirror cover is automatically opened and closed to make the operation more convenient. The LED light on the lens can illuminate the reading at night, which is convenient for the staff to read.

The invention provides a student-side learning data acquisition and processing system. The student-side learning data acquisition and processing system comprises a student learning terminal and a central database. The student learning terminal is connected with the central database through a network; the learning terminal comprises a learning plan module, a learning review module, and a learning progress real-time updating module; learning assessment data and the central database comprise a data recombination analysis module and a problem output module. The student-side learning data acquisition and processing system identifies the auxiliary device. After the fingers are drawn out, the movable seat moves outwards and resets under the action of the reset spring; the cam is driven to rotate through the main pawl plate and the main ratchet wheel; the cam firstly drives the outer clamping plate to quickly move upwards, so that the support is not clamped any more; then the inner sliding plate slowly moves upwards; the inner sliding plate drives a roller and a chain to rotate through an auxiliary pawl plate, an auxiliary ratchet wheel and a chain belt; the cleaning cotton is rotated, so that the automatic replacement operation of the cleaning cotton is realized; the clean cleaning cotton is replaced, so that the finger cleaning effect can be effectively improved.

The invention relates to high-precision mechatronics control equipment in the technical field of mechatronics. The equipment comprises a box body, the box body is provided with a door plate, the box body is also provided with an alarm lamp, a loudspeaker and an air inlet pipe, the air inlet pipe is provided with a support ring, the support cylinder is provided with a straight cylinder, the straight cylinder is provided with a filter plate, a support plate is arranged on the air inlet pipe, a driving motor is arranged on the support plate, and is provided with fan blades, a dust receiving frameis provided with a dust removing structure, an air outlet hole is formed in the box body, the box body is provided with a dust blocking inclined plate, a mounting frame is arranged on the box body, the mounting frame is provided with a top serpentine water pipe, a left serpentine water pipe and a right serpentine water pipe, the top serpentine water pipe, the left serpentine water pipe and the right serpentine water pipe are connected, the top serpentine water pipe is provided with a spray head, the spread head is provided with a first electromagnetic valve, the left serpentine water pipe isprovided with a second electromagnetic valve, and is further provided with a water inlet pipe, the water inlet pipe is provided with a water tank cover, the water tank cover is arranged at the top ofa water tank, the water tank is provided with a water pump, the water pump is provided with a water outlet pipe, and the water outlet pipe is connected with the right serpentine water pipe. The heat dissipation treatment of the control equipment is facilitated, and the control equipment is prevented from being damaged by too high temperature.

The invention provides a novel pulley conveying module which comprises a horizontal rail, pulleys, a pulley yoke, a hook, hairbrush plates, a bearing plate, a gravity sensor, a circuit board, a battery, two springs and a display panel. The pulleys are connected to the pulley yoke through rotary shafts and arranged on the horizontal rail in a matched mode. The pulley yoke is connected with the hairbrush plates through connecting rods. The hairbrush plates are located in the advancing or retreating directions of the pulleys and used for cleaning dust on the horizontal rail. Each hairbrush plate sequentially comprises a fixing plate, an oil cotton layer and a hairbrush. The oil cotton layer contains lubricating oil and provides the lubricating oil for the corresponding hairbrush. The pulley yoke is provided with a cavity. The upper end of the hook extends into the cavity to be connected with the bearing plate in the cavity. The gravity sensor and the springs are sequentially arranged between the bearing plate and the wall plate of the cavity opposite to the bearing plate. The battery and the circuit board are further arranged in the cavity. The display panel is further embedded into the surface of the pulley yoke. The circuit board, the battery, the gravity sensor and the display panel are respectively connected through lead wires.

The invention relates to a food purifier capable of stabilizing generator performance and achieving automatic discharge. The food purifier capable of stabilizing generator performance and achieving automatic discharge comprises a body, a water tank, a basket and a generation chamber; a generator is mounted at the lower part of the generation chamber; an evaporator, which is connected with a compressor refrigeration system, is mounted at the upper part of the generation chamber so as to be used for reducing temperature of the generator; a nozzle, which is connected with a washing system, is arranged at the lower part of the evaporator so as to be used for performing periodic washing on the generator; the upper end of the front side of the basket is fixedly connected with a long shaft; two ends of the long shaft are installed on the body via bearings with low centers of gravity; one end of the long shaft is connected with a connecting rod; the other end of the connecting rod is connectedwith an electric push rod; and the electric push rod is mounted on a base so as to form a tipping mechanism of the basket. During operation, torque can be produced by the long shaft under driven force of the electric push rod, thereby allowing tipping of the basket; and then, purified foods in the basket are drained in the water tank, and poured into a purified food case in front of the food purifier for standby application in the kitchen.

The invention discloses a farmland insect killer based on modern agriculture. The farmland insect killer structurally comprises an insect killing lighthouse, a photovoltaic panel, a storage disc, a supporting rod, an adjusting bolt and a fixing base, wherein the top end of the insect killing lighthouse is fixedly matched with the photovoltaic panel in an embedded mode, the bottom end of the insect killing lighthouse is fixed to the surface of the storage disc through bolts, the center of the storage disc is connected with the supporting rod in an embedded mode, the outer wall of the supporting rod is movably matched with the adjusting bolt, the bottom end of the supporting rod is connected with the fixing base in a welded mode, the insect killing lighthouse comprises a storage battery, an insect trapping lamp, a light-transmitting plate, a cleaner, an electric push rod and a power grid, and the lower end surface of the storage battery is spirally connected with the insect trapping lamp. Under the drive of the electric push rod, surfaces of wiping pieces and insulating scraping strips scrape and sweep residual insect bodies on the power grid, cleanness and tidiness of the surface of the power grid are guaranteed, consumed wiping pieces and insulating scraping strips can be supplemented through other internal structures, the power grid can be effectively kept clean for a long time, and the light radiation distance can be widened.

The invention discloses low-radiation coated hollow glass and a coating process thereof, and relates to the technical field of hollow glass. The low-radiation coated hollow glass comprises an outer glass substrate layer, a first sputtering deposition nano-film layer, a second sputtering deposition nano-film layer and an inner glass substrate layer which are sequentially arranged from outside to inside, wherein first reinforcing mechanisms are mounted at the top and the bottom of the outer glass substrate layer and the inner glass substrate layer through first sealing pieces, second reinforcing mechanisms are mounted on the two sides of the outer glass substrate layer and the two sides of the inner glass substrate layer through second sealing pieces, and the first sealing pieces and the second sealing pieces form a closed cavity for an area defined by the first sputtering deposition nano-film layer and the second sputtering deposition nano-film layer. The low-radiation coated hollow glass has good sound insulation, heat insulation and stability and has high reflectivity to infrared rays with the wavelength of 4.5-25 microns, the coating process comprises three procedures, namely, surface treatment, adhesive pressing and magnetron sputtering coating, harsh conditions are not needed, and the quality is controllable.

The invention provides a cleaning device with a good cleaning effect for electronic hardware shell production, and belongs to the technical field of cleaning devices. The cleaning device comprises a shell, a waste water discharging cavity is fixedly formed in the bottom of the shell, a waste discharging pipe communicating with the waste water discharging cavity is fixedly installed on the back face of the shell, a sliding groove is formed in the top of the inner surface of the shell, two symmetrically-arranged cleaning mechanisms are slidably connected to the inner wall of the shell through the sliding groove, and a lead screw driving module is fixedly installed between the inner surfaces of the shell; and a forward thread part and a reverse thread part are symmetrically arranged on the peripheral side face of the lead screw driving module, and the inner walls of the two cleaning mechanisms are connected with the forward thread part and the reverse thread part respectively. Through the design of the cleaning mechanisms, the device can efficiently complete the cleaning work of the hardware shell in an automatic mode; and when the device conducts cleaning, the inner wall and the outer wall of the outer shell can be cleaned at the same time, and the cleaning effect of the device on the shell is effectively improved by achieving the technical effects.

The invention discloses a method for preparing PCB (Printed Circuit Board) aluminum foils by using cast-rolled slabs. The method comprises the following steps: (1) smelting, casting and rolling 1050 or 1060 aluminum alloys; (2) roughly rolling, intermediately rolling, longitudinally shearing edges; (3) finely rolling; (4) washing and straightening; (5) cutting, checking and packing to obtain PCB electronic aluminum foils. The mechanical property control deltab of PCB electronic aluminum foils prepared by the method is 190-230MPa; the extension ratio of the PCB electronic aluminum foils is larger than or equal to 2%; the surface hardness value is smaller than 60HV.

The invention discloses a photovoltaic module self-cleaning system, which belongs to the field of photovoltaic module cleaning. The photovoltaic module self-cleaning system of the present invention comprises a cleaning module arranged at the upper end of the photovoltaic module, a sewage suction module and a control module arranged at the lower end of the photovoltaic module, the sewage suction nozzle of the sewage suction module is connected with the water suction pump through the sewage suction pipe, and A rotating brush is arranged on the upper part of the suction nozzle. The surface of the inclined photovoltaic module is rinsed from top to bottom through the cleaning module with spray flushing function, and the flushing sewage is sucked out through the sewage suction module with active suction function, and at the same time, it cooperates with the rotation of the sewage suction nozzle The brush cleans the bottom, so that the entire photovoltaic module can be cleaned from top to bottom, and effectively prevents the deposition of dust on the bottom of the photovoltaic module, improving the overall cleaning effect of the photovoltaic module. The whole cleaning system has simple structure, low cleaning cost and high cleaning efficiency. High efficiency, good cleaning and water saving, and high degree of automation.