17results about How to "Self-cleaning" patented technology

The invention discloses a self-cleaning and humidity-controlling air duct filtering device and a using method thereof.The air duct filtering device comprises a shell and filtering cotton, the shell is sequentially provided with a left partition plate and a right partition plate from left to right, and the left partition plate and the right partition plate sequentially divide the shell into a left bin, a ventilation cavity and a right bin from left to right; the shell is provided with an air outlet on the front side of the ventilation cavity, and is provided with an air inlet on the rear side of the ventilation cavity; the left bin and the right bin are each provided with a winding assembly and a spraying assembly, the left end of the filter cotton is wound around the movable end of the winding assembly of the left bin, and the right end of the filter cotton sequentially penetrates through the left partition plate and the right partition plate and is wound around the movable end of the winding assembly of the right bin. The spraying assemblies of the left bin and the right bin are started at the same time, the humidifying effect is achieved, the self-cleaning function is achieved, and the problems that according to a traditional filtering device, a user needs to manually replace filtering cotton, and a humidifying device needs to be additionally arranged are solved.

The utility model discloses a double-screw kneading machine for producing polyformaldehyde, which comprises a barrel body, a screw rod, a screw rod, a screw rod, a screw rod, a screw rod, a screw rod, a screw rod, a screw rod and a screw rod, wherein the barrel body extends along the horizontal direction; a feeding hole is formed above one end of the barrel body, and a plurality of vacuumizing holes are formed in the top; the end covers respectively cover two ports of the cylinder body; each screw rotor comprises a rotor shaft, each rotor shaft is sequentially provided with a spiral rolling propelling section impeller, a crushing propelling section impeller, a complete crushing section impeller and a reverse-rotation crushing discharging section impeller from the feeding end to the discharging end, the phase difference of the impellers on the two rotor shafts is 90 degrees, the impellers are matched with each other, and the impellers are matched with the inner wall of the cavity of the barrel; the shaft ends of the two rotor shafts penetrate out of center holes of the end covers respectively, and rotor shaft center cooling hole channels are formed in the shaft ends of the two rotor shafts respectively along the axes. And the heating jacket covers the periphery of the cylinder body and is arranged in sections, and each section is provided with a heating medium inlet and a heating medium outlet. The equipment is high in devolatilization efficiency, low in energy consumption and capable of continuously running for a long time, and the obtained polyformaldehyde product is good in quality.

The invention discloses a preparation method of an ultra-durable bionic heterogeneous super-hydrophobic surface based on additive manufacturing, and belongs to the field of super-hydrophobic materials, the ultra-durable bionic heterogeneous super-hydrophobic surface is inspired by a lotus leaf effect, and the ultra-durable bionic heterogeneous super-hydrophobic surface is composed of a bionic microstructure formed in one step through additive manufacturing and a super-hydrophobic nanofiller, wherein the bionic microstructure can provide good wear resistance, the damage to the nanofiller is reduced, the nanofiller can play a reverse supporting role, and the fracture of the bionic microstructure is reduced. The super-durability and super-hydrophobicity can be achieved through the synergistic interaction effect of the two heterogeneous materials, the super-hydrophobicity can still be kept when the surface is subjected to abrasive paper abrasion for at least 5000 times and about 200% compressive strain, and in addition, the surface further has excellent self-cleaning performance and abrasion and corrosion resistance. The super-durable bionic heterogeneous super-hydrophobic surface has wide application prospects in the industries of aerospace, navigation, national defense and military industry and the like.

The utility model provides a seamless splicing type aluminum ceiling moistureproof structure which comprises a ceiling body, the ceiling body comprises a substrate layer, a first functional layer and a second functional layer, the first functional layer comprises an epoxy resin coating and a polyurethane coating, the second functional layer comprises a fluorocarbon coating and a nanometer waterproof coating, and the nanometer waterproof coating is a polyurethane coating. By arranging the first functional layer comprising the epoxy resin coating and the polyurethane coating, the epoxy resin coating has excellent waterproof and moisture-proof performance, can effectively prevent water from permeating, further has good adhesive force and chemical corrosion resistance, and can protect the surface of the aluminum material from being damaged by oxidation and chemical corrosion; the epoxy resin coating is smooth in surface and easy to clean and maintain, and the polyurethane coating has excellent moisture-proof and waterproof performance, has elasticity and wear resistance, can adapt to thermal expansion and cold contraction changes of the aluminum ceiling body and is not prone to cracking and falling off.

The utility model relates to the field of hub machining, in particular to a hub machining surface polishing device. The wheel hub machining surface grinding device comprises a main machine body, a rotating chuck is installed on the main machine body, a containing cavity is further formed in the main machine body, the wheel hub machining surface grinding device further comprises a grinding assembly and a grinding wheel, the grinding assembly is installed on the main machine body, a bucket-shaped suction nozzle is further fixed to the grinding assembly, and the suction nozzle communicates with the containing cavity through a rubber pipe; the air pump is fixed in the main machine body, and an air inlet port of the air pump is communicated with the containing cavity through a self-cleaning type filtering assembly. According to the hub machining surface grinding device, the suction nozzle structure is arranged on the grinding device, so that in the grinding process, generated waste chips can be directly sucked by the suction nozzle and concentrated in the containing cavity, meanwhile, the self-cleaning type filtering assembly is arranged at the air inlet end opening of the air pump, the waste chips can be intercepted, and the grinding efficiency is improved. Meanwhile, self-cleaning is achieved, and normal operation of the device is guaranteed.

The application discloses a preparation method of an anti-algae-adhesion super-hydrophobic composite coating. The method comprises the following steps: uniformly dispersing epoxy resin into ester substances to obtain a mixed solution A; adding polyhexamethylene guanidine hydrochloride, polyvinylpyrrolidone, nano-TiO2, polytetrafluoroethylene micro powder, graphene oxide and gamma-aminopropyl triethoxysilane into the mixed solution A, uniformly mixing to obtain a mixed solution B; adding fluorine-containing silane and polyether amine curing agent into the mixed solution B, uniformly dispersing to obtain a mixed solution C; and spraying the mixed solution C to a substrate surface, and performing normal-temperature ventilation and drying to obtain the super-hydrophobic composite coating. The super-hydrophobic coating prepared by the method has the characteristics of low contact area with water, low viscous force and self-cleaning, and also has good anti-algae-adhesion performance, and has a wide application prospect in marine antifouling.

The invention relates to the technical field of membrane manufacturing, in particular to a corrosion-resistant hydrophobic PDMS (Polydimethylsiloxane)-HUSKT-1 membrane as well as a preparation method and application thereof. The PDMS / HKUST-1 composite hydrophobic membrane is constructed on the foamed nickel substrate by combining dopamine modification and a one-step impregnation technology, and the bottleneck of environmental tolerance of a traditional separation membrane is broken through. By means of the efficient separation mechanism and the self-cleaning characteristic under gravity driving, energy consumption and pollution risks are remarkably reduced, a solution with high selectivity, high durability and engineering potential is provided for industrial oil-containing wastewater treatment and marine oil spill recovery, and the key challenge that efficiency, stability and cost are difficult to collaboratively optimize in the prior art is solved.

This invention belongs to the field of micro-coating protection and discloses an organosilicon aerosol coating for waterproofing precision instruments and its preparation method. The organosilicon aerosol coating comprises, by weight, 4-6 parts of fluorinated organosilicon, 2-3 parts of organosilicon-acrylate resin, 30-40 parts of a first solvent, 20-30 parts of a second solvent, 1-1.5 parts of a release agent, 0.5-1 parts of a leveling agent, and a certain amount of propellant. This invention uses a first solvent and a second solvent with different volatility properties to improve the self-leveling and film-forming quality of the microfilm after spraying, reducing surface micropore defects caused by excessive evaporation and forming a good waterproof layer. Through the synergistic effect of fluorinated organosilicon and organosilicon-acrylate resin as film-forming materials, the waterproof coating formed with the release agent and leveling agent possesses both long-lasting waterproofing and peelability. When used for the protection of precision instruments, the coating can be peeled off after a certain protection period without leaving residual pollution on the instrument surface.

The present invention discloses a corrosion-resistant, self-cleaning and super-wetting composite coating and its preparation method and application. The preparation method comprises the following steps: S1: preparing a substrate material, a bionic adhesive coating and a bionic mineralized coating; the bionic adhesive coating is an aqueous solution of gallic acid and / or gallic acid derivative compounds and an oxidant, and the bionic mineralized coating is a solution of n-butyl titanate diluted with an organic solvent; S2: immersing the substrate material in the bionic adhesive coating, washing and drying after taking it out, to obtain a substrate material coated with a polyphenol molecular bridge; S3: immersing the substrate material coated with the polyphenol molecular bridge in the bionic mineralized coating, washing and drying after taking it out, to obtain the composite coating. The separation membrane coated by the present invention can quickly and efficiently separate a variety of oil-water layered mixtures and water-in-oil emulsions, and the coated glass surface can be anti-fogging; the present invention has good self-cleaning and chemical corrosion resistance.

The invention relates to the technical field of liquid level measurement, in particular to an underground water level monitoring device and method.The monitoring device comprises a probe assembly and a displayer, the probe assembly comprises a liquid level pipe, a water inlet head and a pressure diaphragm, the pressure diaphragm serves as a mechanical sensor and can detect water pressure signals, and the water inlet head is rotationally installed at one end of the liquid level pipe; the liquid level pipe is provided with a driving motor to drive the water inlet head to rotate, a first liquid hole and a second liquid hole are formed in the water inlet head, one end of the first liquid hole and one end of the second liquid hole are located in the outer wall of the water inlet head, and the other end of the first liquid hole and the other end of the second liquid hole are located in the end face, facing the pressure diaphragm, of the water inlet head. A flow deflector is arranged on the end face, facing the pressure diaphragm, of the water inlet head, and when the driving motor drives the water inlet head to rotate, underground water flows towards the pressure diaphragm through the first liquid hole or the second liquid hole and flushes the pressure diaphragm. The technical problem that the monitoring precision is affected by impurities on the surface of the pressure diaphragm in the prior art is solved.

The invention discloses a preparation method of a cathode wire for an electric dust remover, which comprises the following steps: phosphating the cathode wire to form a layer of phosphating film with a microporous structure on the surface of the cathode wire; coating the cathode wire with a nano ceramic coating, and enabling the nano ceramic coating to permeate into the microporous structure of the phosphating film in a wet film state; the nano ceramic coating comprises the following raw materials: nano particles and a solvent, and baking the cathode wire at 90-120 DEG C for 20-40 minutes, so that the coating on the surface of the cathode wire is cured to form a nano ceramic coating with the thickness of 10-50 microns, thereby obtaining the cathode wire for the electric dust remover. The cathode wire is subjected to phosphating treatment and paint coating, so that the cathode wire has excellent dust sticking prevention and easy cleaning performance, the adopted nano ceramic paint can well permeate into a microporous structure in a phosphating film under the capillary action in a wet film state, and the corrosion resistance of the coating can be further improved through the action of chemical bonds; and the binding force between the coating and the substrate is improved.

The application belongs to the technical field of super-hydrophilic / super-oleophilic coating materials, and discloses a super-amphiphilic surface with high light transmittance and a preparation method thereof, which comprises the following steps: pretreating a surface of a base material by strong cleaning; immersing the pretreated surface of the base material in prepared strong acid and strong alkali solutions respectively to perform strong acid and strong alkali treatment, and cleaning after immersion for a proper time; and immersing the surface of the base material in concentrated nitric acid at room temperature to perform passivation treatment after the super-amphiphilic performance of the surface of the base material is completed. The application realizes the super-hydrophilic and super-oleophilic performance of the surface of the base material through a simple technological process, and the water and oil can be completely spread on the surface and have self-cleaning performance. In particular, when the glass material is used as the surface of the base material, the high light transmittance of the glass surface can be effectively realized to reach more than 95%.

The present invention relates to a discharge valve, comprising a valve body, a main shaft rotor for discharging and a cleaning rotor for cleaning the main shaft rotor, a driving device, a transmission mechanism and an air-sealing structure; the main shaft rotor is connected to the driving device and the transmission mechanism through a driving main shaft, the cleaning rotor is connected to the transmission mechanism through a driven shaft, the driving device drives the main shaft rotor to rotate and makes the cleaning rotor and the main shaft rotor rotate synchronously through the transmission mechanism; the air-sealing structure comprises a first and a second air-sealing structure respectively arranged at the connection between the driving main shaft, the driven shaft and the valve body, the two air-sealing structures adopt the same structure, the first sealing structure comprises a pair of sealing rings sleeved on the driving main shaft, a sealing cavity formed by a pair of sealing rings and a ventilation duct opened on the valve body and connected to the sealing cavity. The present invention can realize completely closed discharge, effectively block the contact between the material and the pollutants and the sealing ring, and reduce the possibility of polluting the material during the discharge process.

The invention relates to the technical field of glazes, and discloses a composite enhanced antibacterial ceramic glaze and a preparation method thereof.The ceramic glaze is prepared from bentonite, potassium feldspar, kaolinite, calcite, quartz, lithium feldspar, mullite, a synergistic antibacterial agent and the like through grinding and mixing, and in the high-temperature ablation process of the glaze, the ceramic glaze is subjected to high-temperature ablation, so that the antibacterial ceramic glaze is obtained. A carrier of the synergistic antibacterial agent can be ablated to form zinc oxide and silica sol, so that silver can be protected, silver can continuously exist in a finally formed glaze layer to play an antibacterial role, meanwhile, zinc oxide has good performance, and silver and zinc oxide cooperate with each other to generate an enhanced antibacterial role, so that the purpose of improving the antibacterial effect by adding a small amount of silver and silica sol is achieved. The glaze layer can be endowed with excellent antibacterial performance. In addition, due to the existence of the silica sol, the surface of the glaze layer is super-hydrophobic, so that the glaze layer has self-cleaning performance.

The utility model provides a valve seat sealing protection structure of a metal sealing ball valve, and relates to the field of ball valves. The sealing protection structure for the valve seat of the metal sealing ball valve comprises a connecting body, the valve seat, a pressing ring and a flexible graphite ring. The connector end is provided with an annular mounting area; the valve seat is provided with a first valve seat ring part and a second valve seat ring part which are different in diameter. The valve seat is arranged in the annular mounting area, an annular gap is formed between the circumferential side wall of the ring part of the first valve seat and part of the side wall of the corresponding annular mounting area, and the circumferential side wall of the ring part of the second valve seat is in fit contact with part of the side wall of the corresponding annular mounting area; the pressing ring is detachably arranged on the end face of the connecting body, presses the valve seat and seals the annular gap to form an annular cavity. The flexible graphite ring is arranged in the annular cavity in a matched mode, and the pressing ring abuts against the flexible graphite ring. By adopting the valve seat sealing and protecting structure of the metal sealing ball valve, the metal sealing ball valve has higher stability and longer service life.

The present invention relates to the field of separation of sedimentation particles, specifically a multi-layer cyclone sedimentation particle separation device, including a fixed seat, a fixed cylinder is installed on the upper end of the fixed seat, a rotating plate for controlling the fixed cylinder switch is rotatably installed on the front side of the fixed cylinder, and an upper separation unit and a lower separation unit are sequentially arranged inside the fixed cylinder from top to bottom. The upper separation unit used in the present invention can use the cooperation of the deflection component and the filter component to implement reciprocating deflection type dynamic shaking filtration on the wastewater, which can not only increase the activity of the wastewater, accelerate the sedimentation of particulate matter, and improve the filtration speed, but also use the water flow to continuously impact the filter component to prevent the filter component from being blocked, remove the sediment attached to the filter component, maintain the good filtration performance of the filter component, and achieve continuous filtration operation, thereby improving the filtration separation quality and efficiency of the wastewater.