245results about How to "Prevent rust and corrosion" patented technology

The invention discloses a non-contact type flexible magnetic conductive slice for charging and a preparation method therefor. The flexible magnetic conductive slice comprises at least one layer of non-crystal or nanocrystal soft magnetic alloy slices, double-sided adhesive tapes arranged between the soft magnetic alloy slice layers, and a protecting film arranged on the double-sided adhesive tape at the uppermost layer or the lowest layer, wherein each soft magnetic alloy slice layer is formed by fragments distributed with a latticed shape; the fragments are uniform in dimensions and are separated mutually; the preparation method comprises the main processes of performing thermal processing on strips, coating the protective film, performing longitudinal roll shearing, performing transverse roll shearing or transverse roll pressing, coating film and the like, and crushing the strips into the latticed fragment-structured magnetic conductive slice. Through the latticed fragments with controllable dimensions, the loss of the charging efficiency and the heating phenomenon caused by eddy current loss can be reduced; and therefore, the method is an efficient and continuous method for preparing the non-contact type flexible magnetic conductive slice for charging.

The present invention relates generally to a trimming machine used to cut flowers or other plant material into small sized fragments or to prune unwanted thorns or leaves off of plants and flowers. This machine trims flower petals into small pieces which can be used in potpourri or other displays. This machine enables the user to generate a greater volume of flower petals then the traditional method of hand trimming with a scissors. This machine can also trim the unwanted leaves, buds or thorns off plants and flowers.

The invention provides an electrolytic cell with a controllable temperature used for electrochemical measurement. The electrolytic cell comprises an upper cover (1), a sleeve top board (2), a electrolytic cell container (3), a circulating water sleeve pipe (4), a water inlet (5), a sleeve bottom board (2), a fixed support plate (7), a working electrode (8), a gasket (9), a fastening bolt (10), a sealing ring (11), container legs (12), a water outlet (13), a platinum electrode (14), a rubber plug (15), a salt bridge (16), a reference electrode (17), etc. Only need to align a sample to a central hole of the sleeve bottom board and screw a nut to make the sample contacted and sealed with the sealing ring, with no need of welding and sealing the sample, the electrolytic cell can directly measure electrochemical properties of the samples, and is convenient for replacing the sample. Temperature of the electrolyte can be controlled by externally connecting circulating water, so that interference electrochemical signals caused by eddy current produced by electric heating can be prevented. The whole container is made of corrosion resistant organic glass members; and the connecting parts are adhered with organic glass adhesives, so that the electrolytic cell is convenient in preparation and has long service life.

The invention relates to a door body of a roller washing machine and the washing machine. The door body comprises observing window glass and a frame body, wherein the frame body is used for fixing the observing window glass, the frame body comprises an inner frame, a middle frame and an outer frame, the inner frame is positioned at one side of the observing window glass, the middle frame is positioned at the other side of the observing window glass, the edge of the observing window glass is inserted between the inner frame and the middle frame, the inner frame and the middle frame are connected through a connecting structure, the outer frame is connected with the middle frame or the inner frame, and the outer frame at least covers the connecting structure. The door body has the advantages that the connecting structure cannot be seen by a user, so the beautifying degree of the door body is improved; the connecting structure is not exposed to the exterior, so the rust and corrosion of the connecting structure after water staining can be avoided; the inner frame and the middle frame can be coated by the outer frame, so the integrality is high, the appearance is attractive, and the practicality is high.

The invention discloses an automatic salvage device for suspended garbage in a water body. The automatic salvage device for the suspended garbage in the water body comprises a moving ship body, a garbage salvage device is arranged on the end portion of the moving ship body, a garbage collection box is arranged on the moving ship body, a garbage packing device is arranged in the garbage collectionbox, and the garbage salvage device comprises a garbage conveying mechanism and a garbage collection rake tooth mechanism. The garbage conveying mechanism comprises a conveying bracket and rotating rollers, and a conveying chain strip is arranged between the two rotating rollers. The garbage collection rake tooth mechanism comprises two bracket plates and supporting rod frames, a steering mechanism is further arranged at the upper ends of the supporting rod frames, a receiving frame is fixedly connected between the two supporting rod frames, a vertical rotating rod is arranged on the receivingframe, a salvage net plate is connected to the lower end of the vertical rotating rod, and the steering mechanism is fixedly installed at the upper end of the vertical rotating rod. According to thescheme, water body garbage salvage, garbage crushing and garbage packing are combined, so that secondary pollution caused by garbage transfer is prevented, the salvage range is expanded, and the efficiency of garbage salvage is improved.

The invention provides a damping type rotary spraying, washing and drying device for medical instruments and belongs to the field of medical instrument washing. The damping type rotary spraying, washing and drying device for the medical instruments comprises air heating devices, a rotary spraying and washing device, a washing and drying box, a medical instrument carrying box, two damping supporting devices and a second motor. The two damping supporting devices are welded to the two sides of a fixing bottom plate. The washing and drying box is welded to the part between two fixing frames. The air heating devices are arranged on the fixing frames. The rotary spraying and washing device is fixedly arranged on the upper end face of the washing and drying box. The medical instrument fixing box is fixedly arranged at the lower end of the washing and drying box through nuts and bolts. The second motor is fixedly arranged on the lower end face of the medical instrument fixing box. The damping type rotary spraying, washing and drying device is reasonable in structure, clean water is sprayed rotationally and anticlockwise and the medical instrument carrying box rotates clockwise so that the medical instrument can be washed, hot air drying treatment is carried out, and the medical instruments are prevented from corrosion and rust.

The invention provides a disc spring crimping measuring tool for thyristor valve strings and IGBT (insulated gate bipolar transistor) valve strings. The disc spring crimping measuring tool comprises a stress application lead screw, a jack, a support and a hydraulic source. The support comprises a bottom surface, a top surface and support rods, the bottom surface is parallel to the top surface, the support rods are vertically arranged between the bottom surface and the top surface, the jack is vertically penetratingly arranged on the top surface of the support, the stress application lead screw is vertically penetratingly arranged in the jack, and the hydraulic source is arranged at an included angle position among the bottom surface and the support rods of the support and is connected with the jack. The disc spring crimping measuring tool is characterized in that the jack is provided with a pressure sensor, and a transverse rod is arranged on the support rods and is vertically provided with a displacement sensor. Compared with the prior art, the disc spring crimping measuring tool for the thyristor valve strings and the IGBT valve strings has the advantages that matched grooves of spring guide rods can be machined by the aid of measured data of pressures and displacement of disc springs, so that each thyristor can be assembled at one step, damage to the spring guide rods can be prevented, and the work efficiency can be greatly improved.

The invention belongs to the technology field of the metal product package, in particular to an anti-rust package method of the metal product. The invention solves the problems of poor anti-rust effect or high package cost existing in the anti-rust package of the current metal product. The procedure of the anti-rust package method of the metal product is as follows: an outer package is arranged with gas phase anti-rust bags inside, corrugated boards are rolled out; corrugated paper is added in to separate; gas phase anti-rust films are added; the metal product is filled; the gas phase anti-rust films are covered; the corrugated boards and dryers are added; gas phase anti-rust bags are arranged; the outer package is closed and is externally covered with PE rainproof films and PET is bound. The invention has the beneficial effects of oil-saving, environmental protection, anti rust, firm structure, simple technic, long anti-rust period and high reliability.

A pneumatic pump control device comprises an air supply pipeline (1) and a control pipeline (7), wherein the air supply pipeline (1) and the control pipeline (7) are connected in parallel. The air supply pipeline (1) is provided with an air supply pneumatic control valve (3). An outlet of the control pipeline (7) is communicated with a control air inlet of the air supply pneumatic control valve (3). A liquid level control pipeline communicated with a water storage pool (16) is arranged on the control pipeline (7). The liquid level control pipeline comprises a low-liquid-level pneumatic control pipeline body and a high-liquid-level pneumatic control pipeline body. When the liquid level reaches a high liquid level, the high-liquid-level pneumatic control pipeline body and the low-liquid-level pneumatic control pipeline body are closed at the same time, and the air supply pneumatic control valve (3) is opened; when the liquid level reaches a low liquid level, the high-liquid-level pneumatic control pipeline body and the low-liquid-level pneumatic control pipeline body are used for exhausting air at the same time, and the air supply pneumatic control valve (3) is closed. Compressed air of a pneumatic pump is used as a power source of the control pipeline, operation is safe and reliable, and maintenance is not needed. The service life of the pneumatic pump control device is prolonged, and air sources are saved.

The invention discloses a metal vacuum warming plate. A vacuum cavity is formed by sealed cooperative connection between an upper metal plate and a lower metal plate; a supporting core is disposed in the vacuum cavity; a vacuumizing hole is formed in the cavity wall of the vacuum cavity; metal with melting point ranging from 90 to 350 DEG C or related alloy sealing bars are arranged between sealing sides for the sealed cooperative connection between the upper metal plate and the lower metal plate; and the sealing bars are bonded with the upper metal plate and the lower metal plate and sealed with the same. The metal vacuum warming plate is advantaged by high vacuum degree durableness in bad natural environments, excellent sealing property, strong anti-deformation capabilities, great corrosion and rust resisting performance and long service life as long as buildings; fireproof performance is A-level; the metal vacuum warming plate is integrated functions of warming, decoration and construction; the construction period can be obviously shortened; installation cost can be reduced; various shapes can be formed; special demands for building outer wall surface corners and arcs can be met; and the metal vacuum warming plate is suitable for various building outer wall warming and roof insulation.

The invention discloses a light composite interior wallboard system and an assembling method thereof. Fixing plates of the light composite interior wallboard system are symmetrically and fixedly arranged on a lower structural floor slab and an upper structural floor slab or structural beam in parallel. One side surface or two side surfaces of the upper end and the lower end of the composite lightwallboard are fixedly connected with fixing plates of the lower structural floor slab and the upper structural floor slab or structural beam respectively; the buckles are fixedly arranged on one sideface or two side faces of the composite light wallboard at intervals in the vertical direction; the covering keels are vertically arranged and fixedly connected with the buckles; the side keels are arranged on the outer side of the fixing plates in parallel, and the outer end faces of the side keels are flush with the outer end faces of the covering keels; and the decoration panels are arranged onone side or two sides of the composite light wallboard and fixedly connected with the covering keels and the outer end faces of the side keels. The assembling method comprises the steps of base layercleaning, buckle installation, composite light wallboard installation, keel installation and decoration panel installation. The invention has the characteristics of convenience in installation, lightweight, high strength, high shock resistance, sound insulation, heat insulation and heat preservation.

The invention relates to an electrostatic dry powder spraying ceramic powder composite material, which comprises the combination of the following base materials in part by mass: 45 to 60 parts of network former, 2 to 17 parts of network forming and fusing agent, 8 to 13 parts of network modifier and fusing agent, 15 to 20 parts of flux and 5 to 7 parts of nucleating agent, wherein the network former is silicon dioxide; the network forming and fusing agent is diboron trioxide; the network modifier and the fusing agent are alumina, magnesia, calcium oxide, sodium fluoroaluminate and zinc oxide; the flux is sodium oxide, potassium oxide and lithium oxide; and the nucleating agent is titanium dioxide, zirconia and phosphorus pentoxide. A steel structure sprayed by the material in the open air and under atmospheric pollution environment for a long period can effectively prevent rust corrosion; and moreover, the service life of a highway guardrail plate, an upright post and the like can reach over 30 years.

The invention discloses a scale and corrosion inhibitor. The scale and corrosion inhibitor is prepared from the following raw materials in parts by weight: 20 to 25 parts of amino tri(methylene phosphonic acid), 30 to 35 parts of 1-hydroxyethane 1,1-diphosphonic acid, 15 to 20 parts of amino tri(methylene phosphonic acid), 3 to 5 parts of sodium ethylenediamine tetramethylene phosphonate, 2 to 5 parts of polyacrylic acid, 2 to 6 parts of lauric acid, 1 to 3 parts of polyaspartic acid, 1 to 3 parts of 2-hydroxyphosphonoacetic acid, 1 to 3 parts of methyl benzotriazole, 2 to 6 parts of sodium gluconate, 6 to 8 parts of zinc powder, 0.5 to 1 part of surfactant, and 60 to 70 parts of deionized water. The scale and corrosion inhibitor disclosed by the invention has a favorable restraining effect on calcium and calcium carbonate, and has the capabilities of dispersing slightly soluble inorganic salts in water and protecting metal against corrosion and rusting.

The invention discloses a process for casting seal rainproof complex flanges. The complex flanges comprise first flanges and second flanges. Each first flange and the corresponding second flange are butted to each other in the left-right direction, each first flange comprises a first flange body and a protective cover, at least four first fixing holes are uniformly formed in each first flange body, at least four oil filler holes are further uniformly formed in each first flange body, first lugs are further respectively uniformly arranged on the surface of each first flange body, and first grooves are further respectively uniformly formed in the surface of each first flange body; each second flange comprises a second flange body, at least four second fixing holes are uniformly formed in each second flange body, second lugs are further respectively uniformly arranged on each second flange body, and second grooves are further respectively uniformly formed in each second flange body. The process has the advantages that the process is simple and feasible, the seal rainproof complex flanges cast by the aid of the process are low in casting cost, simple in structure, high in connectivity and good in sealing performance, lubrication can be facilitated when the seal rainproof complex flanges are used, rainproof effects can be realized, the service lives of the seal rainproof complex flanges can be prolonged, and the cost can be reduced.

In order to provide a motor rotor in which a permanent magnet is prevented from corroding, wherein a motor rotor for use in a motor for driving a pump rotor rotating shaft of a vacuum pump is provided which comprises a rotor core made up of a plurality of steel plates which are laminated in an axial direction and having a through hole, a permanent magnet which is disposed in the through hole, and end plates which are attached individually to axial end portions of the rotor core, wherein an adhesive is applied to a whole surface of each of the plurality of steel plates, and the plurality of steel plates are surface joined to each other and to the end plates via the adhesive.

The invention discloses a high-efficiency heat dissipating street lamp. The high-efficiency heat dissipating street lamp comprises a lamp pole, a heat dissipating device which is directly or indirectly fixed on the lamp pole and a plurality of light-emitting diode (LED) light sources which are fixed on the heat dissipating device. The heat dissipating device comprises a metal vent pipe, and an LED light source installation area and a heat dissipating fin installation area are arranged on the peripheral surface of the vent pipe. A plurality of heat dissipating fins are fixed on the heat dissipating fin installation area, and a plurality of through holes which penetrate through the pipe wall of the vent pipe are arranged in the vent pipe. An induced air passage is arranged in the lamp pole, and one end of the induced air passage is communicated with one end of the vent pipe. A plurality of air holes which penetrate through the lamp pole are arranged in the induced air passage, and the air holes are arranged below the heat dissipating device. An induced draft fan is arranged in the induced air passage, and a temperature controlled switch which is used for controlling the induced draft fan is arranged in the heat dissipating device. According to the high-efficiency heat dissipating street lamp, the number of the installed LED light sources in a unit area on the heat dissipating device is increased under the condition that the size of the heat dissipating device is not enlarged. A cooling effect is improved along with the increase of quantity of heat produced by the LED light sources, and the high-efficiency heat dissipating street lamp is reasonable in design and low in cost, thereby being a better choice for energy conservation remolding of street lighting.

The invention discloses a nut production process. The process comprises the following steps that S1, through a casting process, a workblank part is made, and the workblank part comprises, by weight ratio, 0.28 to 0.32 of C, 0.32 to 0.45 of Mn, 0.05 to 0.09 of Zn, 0.15 to 0.25 of Si, 0.01 to 0.03 of La, not larger than 0.015 of P, not larger than 0.015 of S, 0.50 to 1.20 of Ni, 0.15 to 0.25 of Sn,0.15 to 0.25 of Al, 0.2 to 0.5 of Mo and the balance iron; S2, the workblank part is put into a mold cavity, cold heading extrusion molding is carried out, and the nut workblank is made; S3, the nut workblank is turned and tapped; S4, heat treatment is carried out; S5, surface treatment is carried out, cleaning oil removal is carried out, blackening treatment is carried out, static electricity manner is adopted to spray an anti-corrosion agent to the nut, and the sprayed nut is cured to obtain a nut finished product. The nut produced through the nut production process has the hardness value and strength value needed by the high-strength nut, is not prone to being corroded and long in service life.

The invention discloses a rabbit cage device convenient to clean. The invention has the following technical solution key points: the device comprises a cage body, the cage body includes a bottom plate, two ends of the bottom plate extend downwards to form supporting seats, one of the supporting seats is provided with a telescopic air cylinder, the output end of the telescopic air cylinder is connected with a brush plate, bristles are arranged on the brush plate, and the telescopic air cylinder is used to drive the brush plate to move along the lower end surface of the bottom plate; and the bottom plate includes a frame, a plurality of pedals and a plurality of locking pieces, the plurality of pedals are distributed in the frame side by side along the length direction of the frame, the frame includes left and right frames located at two ends of each pedal, two ends of each pedal are provided with a left rotating shaft and a right rotating shaft in an extension manner, each pedal is rotatably connected to corresponding installation grooves through corresponding left and right rotating shafts, and the plurality of locking pieces are used to lock the plurality of pedals. According to the device, the telescopic air cylinder and the brush plate are used to replace manual cleaning, and the pedals on the bottom plate can be turned over, so that one side contaminated by excretion can beturned to the outer side before cleaning, so as to facilitate cleaning job of the brush plate.

The invention discloses a motor vehicle and a cam-type pushing force brake apparatus of an electric vehicle. The motor vehicle comprises a brake baseboard, a locating mechanism, a reset spring, a brake arm, a camshaft and two brake shoes; the locating mechanism is arranged among said brake shoes and the brake baseboard, wherein said brake shoes are respectively provided with a brake pad, the camshaft is rotationally connected with the brake baseboard and the brake arm is detachably connected with the camshaft; the motor vehicle further comprises a brake cylinder which is arranged on the brake baseboard, a cavity for rotating the cam part on the camshaft is arranged in the brake cylinder, the brake cylinder is longitudinally provided with two first through holes which are respectively arranged on both ends of the brake cylinder, the brake cylinder is radially provided with a second through hole and a third through hole, and the first, second and third through holes are respectively connected with the cavity; an adjusting mandrel is arranged in the first through hole. The motor vehicle can overcome disadvantage that the utilization rate of the brake pad of the mechanical braking device is low and the effective force arm isn't adjustable in the existing technology.

The invention discloses a novel welding device special for a color steel roofing photovoltaic support and an operation process. The novel welding device special for the color steel roofing photovoltaic support comprises a welding gun and a welding power supply. A pressure adjusting knob, a linear bearing and a welding switch are arranged on the welding gun; a chuck stroke column is arranged on the linear bearing; a welding bolt chuck is arranged on the lower end of the chuck stroke column; a welding bolt is arranged on the welding bolt chuck; a special welding bot is placed in the welding bolt; and the welding power supply comprises a transformer, a charging rectifier bridge, a charging silicon controlled rectifier, an energy storage capacitor, a discharging silicon controlled rectifier, a ground lead and a grounding clamp. The operation process of the novel welding device special for the color steel roofing photovoltaic support comprises the steps of switching on the power supply, clamping the welding bolt, welding, and carrying out preservative treatment on welding points. The welding device special for the color steel roofing photovoltaic support has the following characteristics that the photovoltaic support and color steel tiles are connected in a welding way, so that punching on a color steel roofing is avoided, a roofing waterproof effect is not damaged, the structure strength of the photovoltaic support is improved, and the used parts is less.

The invention relates to a reliable surveying and mapping vehicle based on Internet of Things and conveniently assembled and disassembled. The reliable surveying and mapping vehicle comprises a vehicle body, a body, cameras, a moving mechanism, a fastening mechanism and a lifting mechanism, wherein the fastening mechanism comprises a shell, a driving chamber and a fastening component; the moving mechanism comprises a first motor, a screw and a moving block; the lifting mechanism comprises a cylinder, a sliding block and a telescopic frame. According to the reliable surveying and mapping vehicle based on Internet of Things and conveniently assembled and disassembled, people can conveniently check and maintain the vehicle through the moving mechanism; the shell can be firmly fastened with the driving chamber through the fastening mechanism; compared with the existing manner of fixing through bolts, the vehicle is more conveniently fastened, assembled and disassembled; meanwhile, the influence on assembling and disassembling caused by the corrosion and the rust of the bolts is avoided; the lifting mechanism is capable of storing and protecting the cameras, preventing acid rain from causing corrosion to the equipment and preventing the dust from covering the cameras so as to avoid the occurrence of inaccurate surveying, mapping and shooting effects and avoid the influence of the operations of surveying and mapping; the practicability and the reliability of the surveying and mapping vehicle are improved.

The invention discloses a bathroom floor drain embedded sewer line impermeability structure device which comprises an embedded metal sleeve, a floor drain, an upper half outer tooth plastic pipe, a lower half outer tooth plastic pipe, an elastic plastic water-retaining adhesive tape and a sewer pipe, wherein an upper screw cap is arranged at the upper end of the embedded metal sleeve; a lower screw cap is arranged at the lower end of the embedded metal sleeve; the upper end of the upper half outer tooth plastic pipe is connected with the upper screw cap; the floor drain is arranged on the upper screw cap; the lower end of the lower half outer tooth plastic pipe is connected with the lower screw cap; the sewer pipe is connected to the lower end of the lower screw cap; and a distance is reserved between the bottom edge of the upper half outer tooth plastic pipe and the upper edge of the lower half outer tooth plastic pipe. Compared with the prior art, the bathroom floor drain embedded sewer line impermeability structure device disclosed by the invention adopts the design of similar deformation, elastic plastic gap filling and stress transfer decomposition, is simple in structure, good in impermeability effect, economic, durable, convenient to maintain and large in popularization space and is suitable for building bathroom floor drain sewer pipeline embedded sections.

In the scheme, the invention discloses a device for processing pig feed. The device comprises a rack, a feeding mechanism, a cutting mechanism and a cooking mechanism; the feeding mechanism comprisesa feeding bin, a feeding pipe, an air cylinder and a push plate; the cutting mechanism comprises a cutting pipe, a first motor, a cutter head and rotary cutters, the first motor is fixedly installed on the rack, the cutter head is fixedly connected to the free end of an output shaft of the first motor, and the two or more rotary cutters are uniformly and fixedly connected to the cutter head; the cooking mechanism comprises a heater and a steaming pot, the heater is located under the steaming pot which is located under the end, away from the feeding pipe, of the cutting pipe, a discharging portis formed in the side wall of the steaming pot and communicated with a discharging pipe, and a baffle used for sealing the discharging port is further slidingly connected to the steaming pot. Compared with the existing method that green fodder is cooked, and then pigs are fed with the cooked green fodder, labor costs are saved, time is shortened, and efficiency is improved.

The invention discloses an orthotropic steel bridge deck paving structure and a construction method thereof. The orthotropic steel bridge deck paving structure sequentially comprises a steel bridge deck plate, a rubber layer and an aluminum alloy surface layer which are disposed from bottom to top. The rubber layer is disposed between the steel bridge deck plate and the aluminum alloy surface layer. Anti-shear welding studs are welded on the surface of the steel bridge deck plate at the same interval. An epoxy resin adhering layer coats the upper surface of the steel bridge deck plate. The rubber layer is prefabricated in factories and used for preventing water, insulating heat, buffering loads, providing a construction platform, and the like. Equal-distance holes corresponding to the anti-shear welding studs on the steel bridge deck plate are reserved in the lower surface of the rubber layer, equal-distance holes corresponding to anti-shear protruding nails on the lower surface of the prefabricated aluminum alloy surface layer are reserved in the upper surface of the rubber layer, and field construction is facilitated. The orthotropic steel bridge deck paving structure has the advantages that the rubber layer is good in load bearing and load transfer performance and good in bridge structural deformation compliance; the construction speed and durability are increased.

The invention discloses a fingerprint lock. The fingerprint lock comprises a lock body, a front cover plate is installed at the front side of the lock body, a lock core chamber is formed in the middleof the lock body, and a rear cover plate is installed at the rear side of the lock body. The fingerprint lock is scientific, reasonable and safe and convenient to use; a dustproof cover, non-slip sponge ribs, a fixing ring, fixing springs and a fixing rubber ring are arranged; through the dustproof cover, the situation that dust in air enters the fingerprint lock through a lock hole and the connection of devices in the fingerprint lock fails can be effectively prevented, and the service life of the fingerprint lock can be effectively prolonged; through the fixing ring, the dustproof cover isconveniently fixed and is prevented from slipping in the dustproof process; a moisture-proof chamber, a drying agent and drying holes are arranged; through the drying agent, the moisture in the air inthe fingerprint lock can be absorbed and effectively prevented from causing corrosion and rust on the precise devicse in the fingerprint lock, and the service life of the fingerprint lock can be effectively prolonged.

The invention discloses a metal-gas heat-insulation plate and a method for manufacturing the same. The metal-gas heat-insulation plate is characterized in that an upper metal plate and a lower metal plate are connected with each other in a seal fit manner to form a gas cavity, inflation holes are formed in the walls of the gas cavity, weld positions are arranged at the inner edges of seal edges of the upper metal plate and the lower metal plate, closing strips are arranged between the seal edges of the upper metal plate and the lower metal plate, are positioned on the outer sides of the weld positions and are made of metal with melting points ranging from 90 DEG C to 385 DEG C or alloy of the metal, and the closing strips and the seal edges of the upper metal plate and the lower metal plate are integrally adhered with one another and are sealed. The metal-gas heat-insulation plate and the method have the advantages that high gas tightness of the metal-gas heat-insulation plate can be kept for a long time in severe natural environments, and the metal-gas heat-insulation plate is high in sealing strength and deformation resistance; the molten closing strips with ductility have certain deformation capacity, and accordingly the closing performance still can be perfectly kept when products deform due to factors such as temperature stress, wind load and the dead weight of plate bodies in the severe natural environments.

The invention discloses a cleaning device for a process air conditioner filter screen. The cleaning device comprises a box body, a filter screen mounting frame is rotatably mounted in the box body, and a plurality of water spraying heads and a plurality of air spraying heads are mounted at the top of the box body; and outlets of the water spraying heads face the filter screen mounting frame, and outlets of the air spraying heads face the filter screen mounting frame. A to-be-cleaned filter screen is fixed to the filter screen mounting frame, the water spraying heads spray high-pressure water to the filter screen for cleaning, meanwhile, the filter screen mounting frame drives the filter screen to rotate, and cleaning of the filter screen can be efficiently completed; and after cleaning is completed, air is sprayed to the filter screen mounting frame through the air spraying heads, so that the filter screen can be rapidly dried, and the metal part of the filter screen can be effectively prevented from being rusted and corroded due to long-time non-drying.

The invention provides a method for preparing a super-hydrophobic coating on a steel substrate by virtue of Fe-based nano composite brush electroplating and belongs to methods for preparing super-hydrophobic coatings on steel substrates. According to a process for preparing a super-hydrophobic coating on the surface of a steel substrate by using nano composite brush electroplating iron, a nano composite brush electroplating iron process and coating blackening treatment are adopted to prepare the super-hydrophobic coating with a contact angle of more than 150 degrees and a roll angle of less than 3 degrees on the surface of the steel substrate. The method comprises the following steps: (1) finishing preparatory works; (2) carrying out a process flow of preparing a micro nano coarse structure on the steel surface by using the nano composite brush electroplating iron; (3) carrying out the process steps of electric purification, activation, bottom layer plating, nano Cu / Al2O3 composite coating plating and alkali liquor soaking, performing water flushing after each process step to prevent the plating solution from polluting the next process, and performing blackening treatment on the coating; and (4) finishing the coarse surface by using a low-surface-energy substance. The method, which is used for constructing a super-hydrophobic surface by performing brush electroplating of iron on the surface of a hard metal and then performing blackening treatment, has the advantages of light and portable equipment, simple process, low cost, strong coating bonding force and the like.

The invention provides a fixing structure of a valve body of an expansion valve. The fixing structure comprises a valve body and a coil. The lower end of the valve body is inserted in an inner hole of the coil, the upper end of the valve body is provided with a longitudinal connecting pipe and a transverse connecting pipe, the coil is coated with a layer of plastic shell, the upper end face of the plastic shell is provided with a clamping block, and a clamping groove used for connecting the transverse connecting pipe in a clamping mode is formed in the clamping block. According to the fixing structure of the valve body of the expansion valve, the plastic shell with the clamping block is arranged on the outer shell of the coil in an injection molding mode, the transverse connecting pipe of the valve body is connected into the clamping groove of the clamping block in a clamping mode to achieve axial positioning and circumferential positioning of the valve body and the coil, and therefore the valve body is fixedly connected with the coil. The fixing structure of the valve body of the expansion valve is convenient to assemble, and capable of effectively improving production efficiency and reducing production cost. The plastic shell is arranged on the outer shell of the coil, so that an original metal outer shell of the coil is prevented from being rusted and corroded, and the service life of the expansion valve is effectively prolonged; in addition, the plastic shell can play a role in suppressing noise, and effectively reduce working noise of the electronic expansion valve.

The invention provides a preparation method of an anti-corrosion coating. Through fluorinated polysiloxane in the primer, the anti-corrosion coating has good adhesion to a base and has good hydrophobicity. An inorganic filler can enhance the corrosion resistance of the anti-corrosion coating and provide a micron-scale surface. Nanometer hydrophobic particles in a fabric can enhance the hydrophobicity of the anti-corrosion coating. The nanometer particles interpenetrate with the micron-scale surface in the primer so that an uneven microscopic hydrophobic structure is formed and the hydrophobicity is further improved. The silane coupling agent can enhance the identity of the nanometer hydrophobic particles and the system so that dispersion is more uniform. The invention also provides a multifunctional anti-corrosion display frame. The interiors of mounting holes and through holes of the display frame are spray-coated with anti-corrosion coatings for preventing rust corrosion caused by long-term retention of water and prolonging the service life of the display frame.