38results about How to "Avoid pitting" patented technology

The utility model discloses a pipeline-surrounding pipe climbing operation robot which comprises a pipe climbing robot body and a lengthwise track, and the pipe climbing robot body comprises a vehicle body and wheels. The wheel comprises an inner wheel used for walking on the surface of the track and an outer wheel abutting against the side wall of the track, the radius of the outer wheel is larger than that of the inner wheel, and the radius difference between the outer wheel and the inner wheel is smaller than the thickness of the track; a cantilever is further arranged on the vehicle body in the axial direction of the pipeline to be operated, and an operation clamp is movably arranged on the cantilever along the cantilever. The pipe climbing robot has the advantages that the inner wheel walks on the track, the outer wheel is tightly attached to the edge of the track for limiting, the outer wheel does not make contact with the outer surface of the material pipe, welding seams and pits in the material pipe can be effectively avoided, and it is guaranteed that the pipe climbing robot does not jump when walking, and the pipeline operation quality is not affected. All the devices are stored together through the movable cabinet, so that storage, movement and field operation are facilitated; and a cutting torch, a welding gun and the like can be selectively mounted according to operation requirements so as to realize different operations.

The application discloses an array substrate and a liquid crystal display panel, and belongs to the technical field of display. The array substrate has a plurality of sub-pixel regions. The array substrate comprises a substrate, and a sub-pixel, a first insulating layer, a common electrode and a first supporting column located on one side of the substrate. The sub-pixel comprises a transistor and a pixel electrode, and the first insulating layer is located between the transistor and the pixel electrode in a direction perpendicular to the substrate. In the same sub-pixel region, the first insulating layer comprises a first via, and the pixel electrode is overlapped with a first electrode of the transistor through the first via. One first supporting column corresponds to two first vias adjacent in a first direction. For the corresponding first supporting column and two first vias, the first supporting column has a part extending into the two first vias, and in the first direction, the maximum width of the first supporting column located in the first via is less than the maximum width of the first via. In this way, the uniform distribution of the guide liquid can be ensured, and the display uniformity is improved.

The utility model discloses an explosion-proof voltage transformer, relates to the technical field of voltage transformers, and aims to solve the problems that the outside of an insulating tube of the conventional voltage transformer is not protected, the insulating tube is easily damaged by external force, the phenomena of faults and pits are avoided, explosion is easily caused, and the explosion-proof performance is poor. A secondary winding main body is arranged at the upper end of the iron core main body, an upper top plate is arranged at the upper end of the secondary winding main body, and a high-voltage insulating sleeve is arranged at the upper end of the upper top plate; the protective sleeve is arranged outside the high-voltage insulating sleeve, the outer wall of the protective sleeve is provided with vent holes, the vent holes and the protective sleeve are of an integrated structure, the number of the vent holes is multiple, the protective sleeve is internally provided with a cavity, and the cavity and the protective sleeve are of an integrated structure; and the wiring board is arranged at the lower end of the iron core main body, and wiring terminals are arranged on the two sides of the wiring board and the top end of the high-voltage insulating sleeve.

The present invention provides an atomic-level flat device with a microstructure, which comprises, from bottom to top, a substrate, a bonding material, a second dielectric layer located on the substrate, a microstructure, and a first dielectric layer, wherein the surface of the first dielectric layer is an atomic-level smooth surface. The present invention also provides a method for preparing the atomic-level flat device with a microstructure, which can effectively avoid pits or burrs generated in the existing microstructure processing process.

The invention discloses a cable wiring mechanism for a tunnel electric power system, and the mechanism comprises a binding post which is provided with a wiring female head; an inner ring sleeve is arranged in the male head shell; the movable ring sleeve is axially arranged on the outer side of the male head shell in a sliding and sleeving mode, and the threaded driving rod is rotationally arranged on the male head shell and is in threaded fit with the movable ring sleeve. According to the cable wiring mechanism of the tunnel power system, the movable ring sleeve is coaxially fixed to the wiring female head in advance, the threaded driving rod is rotated to enable the male head shell to slide relative to the wiring female head to axially approach, and then the contact head axially moves to approach and is inserted and matched in the contact groove to complete electrical connection; therefore, the problem that pits are generated due to radial impact between the contact head and the contact groove in the manual butt joint process is solved, and the problems that contact resistance is increased and heat is increased due to the fact that the pits are generated between the contact head and the contact groove are solved.

The utility model relates to a kind of water removal and cooling device of steel plate hot straightener, belong to steel plate hot straightening equipment technical field, for the hot straightening machine of steel plate is blown to remove water and cooling.The technical scheme is: air inlet main pipe and inlet and outlet water main pipe are respectively placed horizontally in the two sides of hot straightening machine, air inlet main pipe and inlet and outlet water main pipe are connected with multiple parallel spray pipes, multiple spray pipes are respectively installed with multiple nozzles and the roll table inside hot straightening machine is opposite, air inlet main pipe is connected with air inlet pipe, air inlet pipe is connected with compressed air pipeline, air inlet pipe is installed air inlet pipe valve, inlet and outlet water main pipe is respectively connected with inlet pipe and drain pipe, inlet pipe is installed inlet pipe valve, the water inlet end of inlet pipe is connected with cooling water pipeline, drain pipe is installed drain pipe valve.The utility model is simple in structure, convenient to use, can be blown to remove water to hot straightening machine, improve the quality of steel plate, hot straightening machine and roll table can be cooled simultaneously, ensure that hot straightening machine is stably operated.

The embodiment of the present application provides a disc seat assembly and a clothes processing device. The disc seat assembly comprises a disc seat, an electromagnetic lock device and a shielding piece, the shielding piece is used for shielding a cable connected with the electromagnetic lock device, the disc seat comprises a seat body, the shielding piece and the electromagnetic lock device are arranged below the seat body of the disc seat, the shielding piece is connected with the disc seat, and the electromagnetic lock device is connected with the shielding piece. The disc seat assembly provided by the embodiment of the present application can avoid the phenomenon that a recess appears on the upper surface of the disc seat due to injection molding of a screw column on the disc seat by installing the electromagnetic lock device on the shielding piece below the disc seat, so that the appearance effect of the disc seat can be improved, and the appearance aesthetic degree of the washing machine is improved.

The utility model discloses a compressor buffer casing, which relates to the technical field of compressors and comprises a bottom plate, an inner casing of the compressor is fixedly connected onto the bottom plate, a buffer component is arranged on the outer side of the inner casing and comprises a fixed casing fixedly mounted on the inner casing, and the fixed casing is fixedly mounted on the inner casing. And moving cavities are symmetrically formed in the fixed shell, springs are fixedly connected into the moving cavities, contact pieces are arranged on the outer sides of the springs, a first connecting rod is fixedly connected to the contact piece on the left side, and a second connecting rod is fixedly connected to the contact piece on the right side. According to the compressor, through the arranged buffering assembly, when the compressor is collided, a good buffering effect can be provided for the inner shell of the compressor, so that pits are prevented from being formed in the inner shell, and the overall durability is improved.

The invention discloses a cutting fluid for a semiconductor material and a preparation method thereof, and relates to the technical field of cutting fluids. The semiconductor material provided by the invention is composed of the following raw materials: 0.001-30.00 parts of a water-soluble lubricant; 0.001 to 30.00 parts of an anti-wear lubricant; 0.001 to 20.00 parts of an extreme pressure lubricant; 0.001 to 50.00 parts of a special wetting agent; 0.001 to 30.00 parts of an emulsifying dispersant; 0.001 to 90.00 parts of an antirust agent; 0.001 to 90.00 parts of a corrosion inhibitor; 0.001 to 10.00 parts of a bactericide; 0.001 to 50.00 parts of a settling agent; and 0.001 to 99.00 parts of deionized water. The prepared cutting fluid for the semiconductor material has high permeability and high lubricity, the surface quality of slices is high, the warping degree is low, and the cutting efficiency and the yield are improved.

The present invention discloses a terminal module and a connector, wherein the terminal module comprises a terminal, an injection molded part and a shielding sheet, wherein the terminal and the injection molded part are combined to form an injection molded body, wherein the shielding sheet is provided with a buckle structure, wherein the buckle structure comprises a buckle protrusion and a notch for matching with the injection molded body, wherein the injection molded body is provided with a buckle hole matching with the buckle protrusion and a hot rivet column adjacent to the buckle hole, wherein the hot rivet column passes through the notch to form a riveting point, and the shielding sheet and the injection molded body are fixed by hot rivet at the riveting point. The terminal module of the present invention can overcome the defects of insufficient strength, easy deformation during the crimping process and poor flatness of the terminal module after the secondary injection molding is cancelled, and can improve both the high-speed signal integrity and the mechanical properties of the terminal module.

This invention discloses a water stability testing system and method for granite crushed stone asphalt concrete, relating to the field of water stability testing technology. The granite crushed stone asphalt concrete water stability testing system includes a molding module, a negative pressure immersion module, and a pressure application module. The molding module includes a molding mold; the negative pressure immersion module includes a housing, a negative pressure air pump, and a water storage tank. A first bottom mold can selectively be fitted and connected to a second bottom mold or the water storage tank, respectively used for molding or wetting the test sample. In this invention, demolding of the circumferential surface of the test sample is no longer performed in the early stage; instead, the sealing state between the test sample and the side mold is maintained until the negative pressure immersion process. On the one hand, it eliminates the need to rebuild the sealing structure for the circumferential surface of the test sample, reducing operational steps and improving operational efficiency. On the other hand, the reduced adhesion between the wetted test sample and the side mold reduces the difficulty of subsequent mold opening.

The utility model discloses a glass tempering front side edge grinding device which comprises a roller frame, a plurality of conveying rollers are evenly and rotatably arranged on the roller frame, glass moves on the conveying rollers before being tempered, a plurality of sets of installation grooves are evenly and symmetrically formed in the roller frame, the installation grooves and the conveying rollers are arranged in a staggered mode, and the conveying rollers are arranged in the installation grooves. A grinding mechanism and a cleaning mechanism are arranged on the mounting groove and are sequentially arranged in the glass conveying direction, and a dust removal mechanism is further arranged on the roller frame. The side edges of the glass before tempering are polished through the polishing mechanisms symmetrically arranged on the two sides of the conveying rollers, cracks on the edges of the glass can be eliminated, the conditions of edge breakage, breakage and even furnace explosion in the tempering process are avoided, the finished product rate of tempered glass is increased, and production safety is guaranteed.

This utility model relates to the field of infrared coating electroplating technology, specifically designing an electroplating device for multi-part coating in a single tank. It includes a power supply, with an anode connected to an anode mechanism and a cathode connected to a cathode mechanism. The anode and cathode mechanisms are connected via an electroplating tank, and a bubbling mechanism is provided at the bottom of the electroplating tank. The anode mechanism of this device includes several spaced anode plates, which can achieve uniform voltage distribution, avoiding the problem of uneven coating thickness during electroplating. The connection between the anode plates and the anode mechanism is convenient and easy to maintain. The bubbling device incorporates a check valve to improve device stability and prevent plating solution backflow. The uniformly designed air pipes can evenly bubble, avoiding pitting problems on the surface of parts caused by side reactions such as hydrogen evolution. Multiple cathode hooks in the cathode mechanism allow the device to safely and reliably perform multi-part electroplating in a single tank.

The invention relates to the technical field of highway construction, in particular to an elevation self-adjusting type concrete pavement leveling device. Comprising a machine frame, a guide trolley is arranged on one side of the machine frame, the machine frame is fixedly connected with a first motor through a mounting frame, the machine frame is rotationally connected with a leveling roller, an output shaft of the first motor is fixedly connected with the leveling roller, and the machine frame is fixedly connected with temporary storage shells distributed in a mirror image mode and first fixing frames distributed in a mirror image mode; the first fixing frame is slidably connected with an adjusting frame, the adjusting frame is rotatably connected with a power wheel, the first fixing frame is rotatably connected with a threaded rod, and the threaded rod is in threaded connection with the adjacent adjusting frame. Excessive extruded concrete in the working process of the device is automatically collected through the temporary storage shell, the situation that the excessive concrete on the road surface is driven to the two sides of the road to affect follow-up work is prevented, meanwhile, concrete waste is prevented, and the practicability of the device is improved.

The invention is applied to the technical field of semiconductor processing, and discloses a preparation method of a silicon oxide polishing solution for silicon carbide substrate CMP (chemical mechanical polishing), which comprises the following steps: S1, preparing a solution A and a solution B, respectively storing the solution A and the solution B in independent containers, and maintaining respective stable chemical properties and components in the storage and transportation processes; according to the preparation method of the silicon oxide polishing solution for the CMP of the silicon carbide substrate, the solution A is subjected to fine treatment, silica sol and resin are in full contact in a resin purification device by utilizing polystyrene-divinylbenzene copolymer resin under the conditions of proper temperature and pressure, it is guaranteed that impurities in the treated solution A are greatly reduced, and the quality of the solution A is improved; the multi-step impurity removal process can effectively prevent the impurities from forming scratches and pits on the surface of the silicon carbide substrate, the surface quality of the polished substrate is remarkably improved, and the electrical performance and reliability of a subsequent semiconductor device are guaranteed.

The present application relates to the technical field of continuously variable transmission, in particular to a multi-planet gear reinforced load differential mechanism, comprising a differential mechanism, a floating mechanism and a stability maintaining mechanism.In the present application, when the supporting shaft appears multi-angle displacement, the ball sleeve and the pipe sleeve form a spherical hinge pair, in general, the ball sleeve can be self-adaptively deflected in the pipe sleeve with the angle change of the supporting shaft, so as to avoid the jamming or additional bending moment between the supporting shaft and the pipe sleeve, ensure the sensitivity and smoothness of the floating adjustment, at the same time, the left side of the pipe sleeve is tightly pressed by the spring, the pressing frame and the pressing cylinder frame, the right side of the pipe sleeve is tightly pressed by the pressing sleeve, the spring steel and the blocking frame, this double-sided tightening structure can not only ensure that the pipe sleeve provides sufficient supporting stiffness to the supporting shaft, but also allows the ball sleeve to be self-adaptively deflected in the pipe sleeve, realize the floating supporting effect of "rigidity and flexibility", effectively alleviate the common "S" shape bending deformation and edge contact wear problems of the planet gear shaft under heavy load.

The invention relates to the technical field of corrosion inhibitors and metal corrosion prevention, and discloses a high-density temperature-resistant corrosion inhibitor for an oil extraction pump and a preparation method thereof.The corrosion inhibitor is composed of sodium benzenesulfonate 180.00-200.00 g / L, sodium molybdate 10.00-15.00 g / L and sodium silicate 0.10-0.20 g / L. deionized water serves as a solvent, the density of the corrosion inhibitor is larger than 1.150 g / mL, and the high-density temperature-resistant corrosion inhibitor has excellent corrosion inhibition performance on 45 # carbon steel and 316 L stainless steel in the high-pressure water environment at the temperature of 120-180 DEG C; and the room-temperature corrosion inhibition efficiency is not lower than 85.00%. The corrosion inhibitor is a compound corrosion inhibitor, a compact corrosion-resistant film is formed through the synergistic effect of components, and the corrosion inhibitor is environmentally friendly, low in cost, easy to prepare and capable of accurately adapting to the extreme working condition of direct electric heating auxiliary exploitation of thick oil, effectively solves the corrosion problem of an oil extraction pump protector cavity, prolongs the service life of equipment and has wide application prospects and huge economic benefits.

The invention relates to the field of boron neutron capture therapy, and discloses a method for improving the corrosion resistance of an accelerator neutron source target cooling system, which comprises the following steps: 1) forming a periodic micron-order corrugated oxide film on the surface of a non-target material layer of a copper substrate of the accelerator neutron source target cooling system by laser marking treatment; (2) an alpha-Ta film of a body-centered cubic structure grows on the surface of the oxidation film through magnetron sputtering; and after passivation, the Ta2O5 is converted into a Ta2O5 passive film. The method comprises the following steps: firstly, forming an oxide film with a special shape of periodic micron-sized corrugation on the surface of a copper substrate by utilizing laser marking treatment; an alpha-Ta film is further grown on the surface of the oxidation film through magnetron sputtering; and the copper substrate is passivated into a Ta2O5 passive film, so that the corrosion resistance of the surface of the copper substrate is greatly improved.

The application discloses an impact-resistant and wear-resistant epoxy resin modified mortar and a preparation method thereof, and relates to the technical field of mortar.The application comprises the following raw materials in mass parts: deionized water 170-190 parts, modified boron nitride synergist 13.13-14.38 parts, water reducing agent 0.8-1.2 parts, tributyl phosphate 0.6-0.8 parts, composite modified porous polysiloxane microspheres 26.25-28.75 parts, water-based epoxy resin 21-23 parts, Portland cement 420-460 parts, sulphoaluminate cement 105-115 parts, concrete expansive agent 15.75-17.25 parts, river sand 1050-1150 parts, water-based epoxy curing agent 27.3-29.9 parts.The introduction of the modified boron nitride synergist and other raw materials in the application simultaneously improves the compressive strength, the bending strength, the impact strength, the wear resistance, the anti-cavitation ability, the aging resistance and the alkali corrosion resistance.

The utility model provides a crawler-type agricultural machinery gearbox which comprises a main shell, a speed change mechanism is arranged in the main shell, and a windowing cover plate and a front cover plate are arranged at the position, right opposite to the speed change mechanism, of the upper side of the main shell. A side cover and a half shaft assembly are arranged on the left side and the right side of the main shell, the half shaft assembly is connected with the side cover, one end of the half shaft assembly extends into the shell and is connected with a half shaft gear, and the half shaft gear is in transmission connection with the speed change mechanism. A first bearing and a second bearing are sleeved at two ends of a hub of the half axle gear, an outer ring of the first bearing is connected with the main shell, and an outer ring of the second bearing is connected with the side cover. According to the utility model, one end of the hub is connected with the main shell through the first bearing, and the other end of the hub is connected with the side cover through the second bearing, so that the two ends of the half axle gear are restrained, the deflection of the half axle gear is prevented from being driven by the deflection of the half axle, the tooth surface pitting corrosion caused by unbalance loading is avoided, and the service life is prolonged; and maintenance is easy.

This invention proposes a three-stage linkage deployment and transfer device and method for a rover, belonging to the field of rover transfer technology. It solves the problems of existing rover transfer mechanisms being unable to reliably transfer the rover to the lunar surface under various operating conditions, lacking selective transfer capabilities, and failing to effectively separate the rover from the lander. It includes a release rope, a deployment rope, a first motor, a second motor, and a linkage assembly. The linkage assembly includes a first linkage rod, a second linkage rod, and a third linkage rod. The top end of the first linkage rod is installed at the lower end of the lander, and the tail end of the first linkage rod is connected to the top end of the second linkage rod. The tail end of the second linkage rod is connected to the top end of the third linkage rod. One end of the deployment rope is connected to motor M2, and the other end of the deployment rope is installed at the connection between the first and second linkage rods. One end of the release rope is connected to motor M1. It is mainly used for rover transfer.

The utility model relates to gear lubrication technical field provides a kind of high-speed gear lubricating oil directional injection device, including gear wheel, the side of gear wheel is engaged and is connected with pinion, the side of gear wheel is provided with oil tank, the side of the inside of oil tank is provided with pumping structure, the other side of the inside of oil tank is provided with liquid level detection structure, the liquid level detection structure includes the mounting disc fixed in the top side of oil tank, the top of mounting disc is fixed with table head.The utility model is provided with liquid level detection structure, probe can detect the liquid level change in the inside of lubricating oil, the liquid level height of lubricating oil in the inside of oil tank can be monitored by probe, the liquid level height can be directly read on site by dial, without the aid of other complex equipment, convenient and fast, the device has the function of the lubricating oil height in the inside of oil tank is conveniently detected, the convenience of the high-speed gear lubricating oil directional injection device when using is improved.

This invention discloses a milling machine for granulation machining that facilitates rotational fixation, relating to the field of milling machine technology. It includes a base with a rotary worktable on its top outer wall, and further includes a locking mechanism located on one outer wall of the rotary worktable. The locking mechanism comprises a worm gear, a connecting bracket, a mounting cylinder, a tapered sleeve, an elastic sleeve, a guide cylinder, a guide rod, a locking ring, a return spring, a connecting cylinder, a fixed disc, and a limiting groove. The locking mechanism is used for axial positioning and locking of the worm gear. The mounting cylinder and the connecting bracket are connected by bearings. This invention discloses a milling machine for granulation machining that facilitates rotational fixation, which can center and tighten the worm gear when it becomes loose due to long-term operation, thereby ensuring the positioning accuracy and long-term operational stability of the rotary worktable under all working conditions.

The present invention relates to the technical field of welding wire drawing equipment, and in particular to a flux-cored welding wire drawing equipment. Its technical solution includes: a frame, a reel for winding welding wire is rotatably mounted on the frame, a wiring mechanism for evenly distributing welding wire on the reel is mounted on the frame, a power mechanism for driving the reel to rotate is mounted on the frame, and also includes a constant speed control component, the constant speed control component is mounted on the frame, and the constant speed control component controls the rotation speed of the reel according to the current diameter superimposed after the reel is wound with welding wire. The present invention reduces the diameter of the circle formed by multiple tensioning blocks as the diameter of the reel gradually increases, thereby reducing the angular velocity of the reel to keep the linear velocity of the edge of the reel unchanged, thereby keeping the speed at which the welding wire is stretched unchanged, thereby keeping the same batch of welding wires wound on the same reel at a constant stretching speed, and effectively ensuring the same quality of the same batch of welding wires.

The application provides a porous silicon structure and a preparation method of an electron emission device. The method comprises the following steps: cleaning and pretreating a surface of a single crystal silicon substrate to ensure the cleanliness of the surface of the single crystal silicon substrate; forming a surface microstructure with the same material on the surface of the single crystal silicon substrate; and electrochemically corroding the single crystal silicon substrate based on the surface microstructure. In the electrochemical corrosion process, the gap between two adjacent micro-protrusions is formed as a preferential chemical reaction site, and the electrochemical corrosion solution corrodes the single crystal silicon substrate from the gap. Since the thickness of the surface microstructure is 0.05-1 microns, the distance between two adjacent micro-protrusions in the surface microstructure is 0.1-10 nanometers, and the lateral size of the micro-protrusion on the surface of the single crystal silicon substrate is 10-100 nanometers, the electrochemical corrosion can be effectively uniform, the consistency of the corrosion rate of the whole surface of the single crystal silicon substrate can be ensured, pits can be avoided, and the corrosion position of the single crystal silicon substrate can be made uniform and controllable.

The present application relates to the technical field of flat lock, in particular to a kind of flat lock, wherein a kind of flat lock includes: base, with assembly cavity;Pivot, with base rotatable connection, and inner end enters the assembly cavity;Pin, is located in the inner end of the pivot;Handle, with the assembly cavity is adapted, by the pin with the pivot rotatable connection, first plane and second plane are equipped with connection on the side close to the assembly cavity, there is included angle between the first plane and the second plane, first protrusion is equipped on the first plane;Avoiding step, is equipped in the inner side of the assembly cavity, for avoiding the first protrusion;And avoiding groove, is opened in the pivot, for avoiding the first protrusion;Wherein, in the lock state, the avoiding step is aligned with the avoiding groove, the handle can be with the axis of the pin to realize turning.

This utility model discloses a painting device for a production line of slate-coated flooring, belonging to the technical field of slate-coated flooring production equipment. It includes a painting rack for supporting the slate-coated flooring, a fixed frame welded to the top of the painting rack, and multiple air inlets for air intake on the side of the fixed frame. Each of the multiple air inlets is equipped with a fan. A sliding groove is provided on the vertical inner wall of the fixed frame, and a filter plate frame for support is slidably installed inside the sliding groove. A filter plate for filtering air is installed inside the filter plate frame. A heating pipe for heating air is installed on the vertical inner wall of the fixed frame. This painting device for a production line of slate-coated flooring can improve air filtration capacity, prevent solid particles in the drying gas from directly adhering to the uncured paint film surface, avoid particle protrusions or pits, ensure the surface roughness of the flooring, and improve aesthetics and tactile feel.

The invention discloses an intelligent stainless steel water tank cleaning device and an operation mode thereof, and relates to the technical field of water tank cleaning, the intelligent stainless steel water tank cleaning device comprises a tank body unit, a cleaning unit, a cleaning control assembly arranged on a tank body, a dosing assembly arranged on the cleaning control assembly, and a cleaning assembly arranged on the cleaning control assembly; and the drainage unit comprises a drainage pipe arranged on the box body, an electromagnetic valve arranged on the drainage pipe and a mechanical valve arranged on the drainage pipe. According to the device, the cleaning unit is arranged, disinfection cleaning and neutralization cleaning are carried out in the water tank, the water tank is sequentially cleaned through the main cleaning part, the neutralization part and the disinfection part, an automatic and intelligent water tank cleaning process is formed, intelligent cleaning of the water tank can be carried out, algae breeding of the water tank can be prevented, and disinfection of the interior of the water tank can be achieved; and spot corrosion at the top of the water tank is prevented, and labor consumed by manual repeated invasion of the water tank is reduced.

The application discloses a magnesium-aluminum alloy workpiece and a surface nano processing method thereof, and relates to the technical field of metal material processing technology.The roughening liquid adopts sulfuric acid to realize surface etching, forms uniform corrosion pits, and is matched with hydroxyethylidene diphosphonic acid corrosion inhibitor to effectively inhibit the pitting corrosion and intergranular corrosion of the magnesium-aluminum alloy and avoid excessive roughening to cause the strength of the base material to decrease.During ash removal, an alkaline medicine liquid is added with a surfactant, isostearyl alcohol polyoxyethylene ether is used as a non-ionic surfactant, residual ash in the corrosion pits is stripped, an activated metal surface is exposed, and the uniformity of subsequent electrolytic treatment is ensured.The application generates a stable and firm composite oxide film on the surface of the magnesium-aluminum alloy workpiece through electrolytic treatment, uniform nano holes are formed on the oxide film, and the bonding performance of the magnesium-aluminum alloy workpiece subjected to nano injection molding is improved.

The application discloses an antibacterial pillow, and belongs to the technical field of pillows. The antibacterial pillow comprises a pillow body, wherein the pillow body is composed of an external structure and an internal structure; the internal structure comprises a filler, a supporting pad, a ventilation hole, a supporting column and a ring line; and the external structure comprises a cloth cover and a zipper, wherein the zipper is arranged at one end of the cloth cover. The supporting pad is made of silica gel, and the silica gel has moderate hardness, so that the neck is not uncomfortable, and a certain supporting force can be provided to avoid the occurrence of a pit in the middle of the pillow after the pillow is used for a period of time, thereby improving the comfort during use of the pillow and improving the use experience. The longitudinal ring line is wound outside the filler, the transverse ring line is wound outside the longitudinal ring line, a grid shape is formed, the filler is wrapped, the filler is prevented from being loose, the filler is not prone to collapse after being used to a certain degree, and the service life of the pillow is improved, and the practicality of the device is greatly improved.