47results about How to "Not easy to get dusty" patented technology

The invention relates to a novel plate type air preheater, and belongs to the field of heat exchangers. The novel plate type air preheater comprises a heat exchange core with corrugated plates, an air preheater shell, flue gas inlet and outlet pipelines and air inlet and outlet pipelines. A plurality of groups of plate bundles are stacked up in a certain manner to form the heat exchange core with the corrugated plates. Two corrugated plates are welded together in a plane zone to form each plate bundle, flue gas elliptical tubular channels are formed by the plate bundles, the plate bundles are stacked up in the planar zones and then are welded to form air shell-side channels, and heat can be exchanged between two types of media in a cross-flow manner. The novel plate type air preheater has the advantages that the novel plate type air preheater is compact in structure, high in heat transfer efficiency, long in service life, convenient to machine and low in cost, and is high-temperature-resistant and high-pressure-resistant; air flue of the novel plate type air preheater flows through the elliptical straight channels and is low in flowing resistance as compared with a tubular air preheater and a finned tube air preheater; the novel plate type air preheater cannot be contaminated by dust, and the dust can be easily cleaned even of the novel plate type air preheater is contaminated by the dust.

The invention relates to an emulsion paint composition with a special artistic effect, and a preparation method and an application thereof, and concretely discloses a composition comprising pearlescent pigment and glass beads as a pigment and filler. The composition concretely comprises, by weight, 3-30 parts of the pearlescent pigment, 20-25 parts of the glass beads, 10-40 parts of an emulsion, and optionally selected 10-60 parts of water. The invention also discloses the preparation method and the application of the composition. The composition has the advantages of easiness in construction, good dust resistance, long service life, excellent artistic effect after coating, and broad application prospect.

The invention discloses a ceiling fan with telescopic fan blades. The ceiling fan comprises a base, a swing pipe, a rotation disc, connection pieces, first fan blades and second fan blades. One end of the swing pipe is fixed on the base, and the other end of the swing pipe is fixedly provided with the rotation disc; the connection pieces connect the rotation disc and the first fan blades; the first fan blades are hollow structures, and guide grooves and limit grooves are formed in the first fan blades; the second fan blades are hollow structures, and guide blocks and limit blocks are arranged on the outer sides of the second fan blades; the second fan blades are arranged in the first fan blades and fixed on the first fan blades through springs. The ceiling fan is simple in structure, it is guaranteed that the second fan blades are accommodated in the first fan blades under the traction of the springs when the ceiling fan is not in a working state, occupied space is reduced, dust can not easily stain the second fan blades, in work, under the action of centrifugal force, the second fan blades extend out of the first fan blades, the area of the fan blades is increased, and the fanning effect is enhanced.

The invention relates to a polyurethane resin for a synthetic leather surface layer, and a preparation method thereof. The preparation method of the polyurethane resin comprises the following steps: jointly adding polyether polyol, polyester polyol, polysiloxane a and a part of solvent into a reaction kettle, stirring at 40-55 DEG C until the components are completely dissolved, adding a part of isocyanate, heating to 70-80 DEG C, and carrying out a prepolymerization reaction for 0.5-1 h; continuously adding a small molecular chain extender, cooling to 50 DEG C, stirring for 15-30 min, addinga catalyst, supplementing the remaining isocyanate, heating to 70-80 DEG C, and continuously reacting for 0.5-1 h; and supplementing the remaining solvent until the viscosity reaches 100-160 cps, cooling to the temperature of 50 DEG C, continuously stirring for 1-1.5 h, and adding isocyanurate and polysiloxane b to obtain the polyurethane resin for the synthetic leather surface layer. The productprovided by the invention has outstanding wear resistance and heat resistance, does not whiten after high-temperature embossing, has a remarkable antifouling effect after being applied to synthetic leather, and is not prone to being stained with dust.

The invention relates to a special-shaped composite material section bar, which can be combined with right-angled angle iron and used for power transmission and distribution poles and towers, trunk line electrification pole and towers or communication poles and towers. The special-shaped composite material section bar comprises a body, wherein the body is provided with a first panel and a second plane, one end of the first panel is directly connected with one end of the second panel, and the other end of the first plane is connected with the other end of the second panel through a circular-arc surface. According to the special-shaped composite material section bar, because the surface is arranged into a circular arc, the special-shaped composite material section bar has the characteristics of self cleanness, hardly ash staining and no cumulative water; in addition, the section bar is made of insulated composite materials, thereby having the advantages of good insulation property, light weight and high safety performance.

The invention relates to the technical field of trunks, in particular to a device for rapidly cleaning hidden type trunk casters. The device comprises a device body, a groove communicating with the outside is formed in the bottom of the device body, the left groove wall and the right groove wall of the groove are both tightly bonded with two mutually symmetric first main magnets, and a second mainmagnet is tightly adhered to the top wall of the groove, four protective sleeve storage devices arranged in a matrix mode are arranged in the groove, the protective sleeve storage device comprises astorage box, a sleeve hanging rod arranged along the width direction of the storage box is arranged on the rear chamber wall of a containing cavity, a sealing cover is further arranged on the storagebox, and a protective sleeve is wound on the sleeve hanging rod. According to the device for rapidly cleaning a hidden type trunk caster in the invention, the operation is simple and fast, the protective sleeve can be replaced conveniently, the trunk casters are not easy to contaminate, and convenience is brought to users.

A chromium-free passivator with a hydrophobic surface property for plated metal, comprising: 0.5-30 g / L of silicate, 0.01-1 g / L of a nanometer material, and 0.1-10 g / L of one or more of a silane coupling agent, a titanate coupling agent, and a water-based wax emulsion. Also disclosed is a method for passivating plated metal by using a passivator.

The invention relates to the field of engines and particularly relates to a multifunctional engine circuit protectant. The protectant is prepared through uniformly mixing the following materials in parts by weight: 30-60 parts of ethylene glycol ethyl ether, 20-30 parts of insulating resin, 0.3-0.5 part of OP emulsifier, 0.1-0.2 part of ethyl orthosilicate, 0.5-1 part of graphene oxide, 10-20 parts of propane and 10-20 parts of butane. The protectant is prepared through uniformly mixing the ethylene glycol ethyl ether, the insulating resin, the OP emulsifier, the ethyl orthosilicate and the graphene oxide at normal temperatures, pouring the mixture into a metal gas mist tank, and then inflating the metal gas mist tank with the propane and the butane. The engine circuit protectant has the functions of isolating moisture, avoiding oxidation, resisting high pressure, insulating and delaying circuit aging, repairing fine cracks, keeping clean and the like.

The invention relates to a drying device, in particular to a printing ink drying device for printing. Aiming at solving the thchnical problem, the invention provides the printing ink drying device forprinting which has the advantages that the time is saved, and printing ink is not liable to be stained with ash in the printing ink drying process. The printing ink drying device for printing comprises a box body and the like; supporting legs are arranged at four corners of the bottom of the box body; small holes are uniformly formed in the left and the right of the box body at intervals; a swingdevice is arranged in the box body; and a drying device is arranged on the left of the outer side of the box body. According to the printing ink drying device for printing, paper is driven to swing through the swing device, the printed paper is dried through the drying device, and therefore the effects that the time is saved, and the printing ink is not liable to be stained with the ash in the printing ink drying process can be achieved.

The invention relates to a tire glazing glaze, the main active components and their mass parts are: 0.5-20 parts of fluorosilicone resin, 0.5-20 parts of perfluorosurfactant, 40-97 parts of silicone oil, and ester cosolvent 1-10 parts, isoparaffin oil 1-10 parts. The tire glazing glaze of the present invention can quickly form a layer of long-acting and powerful water-repelling protective film on the tire surface, which is bright immediately after spraying and restores the tire's new appearance. This product has a good water repelling effect, is not easy to be stained with dust, and has a long-lasting effect. According to the experimental test, the water repelling effect is much higher than that of ordinary commercially available water-based tire glazes. The water-repelling effect can last for more than 15 days, effectively solving the current water-based tire glazing. The glaze has a short effective time and is easily washed away by water.

The invention discloses environment-friendly anti-tearing wallpaper which comprises a waterproof layer, an anti-radiation layer, a reinforcing layer and an anti-moth layer; the anti-radiation layer islocated on the inner side of the waterproof layer, the reinforcing layer is located on the inner side of the anti-radiation layer, the anti-moth layer is located on the inner side of the reinforcinglayer, the anti-moth layer is stuck to a wall, the anti-radiation layer comprises an absorbing layer and a plurality of metal spiral bars located inside the absorbing layer, the metal spiral bars arearranged in the length direction of the wallpaper, the intervals between the adjacent metal spiral bars are equal, and the metal spiral bars include inner spiral bars and outer spiral bars. The wall is effectively protected, the waterproof performance is good, dust is not likely to be stuck to the wallpaper, the surface of the wallpaper can be conveniently cleaned, the anti-tearing performance ofthe wallpaper is effectively improved, repeated construction is facilitated, electromagnetic radiation is shielded, and formaldehyde and other harmful gas in air can be removed.

The invention relates to a method for repairing defects in the microstructure of synthetic fibers, a high-strength synthetic fiber rope, and a method for repairing the microstructure of synthetic fiber ropes. The temperature condition is sprayed into the pulled synthetic fiber rope, and the synthetic fiber rope is pulled at a speed of 0.1 to 10 m / s, and then cured by multi-stage heating; it is characterized in that: the repair agent is composed of carborane polyester and carbon dioxide Cerium is mixed, and the weight ratio of cerium dioxide in the restoration agent is 0.1-0.5%. The strands of the high-strength synthetic fiber rope are processed by the aforementioned treatment methods. The advantage lies in that the internal microstructure of the synthetic fiber rope can be significantly improved, and the strength performance is greatly improved.

The invention relates to an emulsion paint composition with a special artistic effect, and a preparation method and an application thereof, and concretely discloses a composition comprising pearlescent pigment and glass beads as a pigment and filler. The composition concretely comprises, by weight, 3-30 parts of the pearlescent pigment, 20-25 parts of the glass beads, 10-40 parts of an emulsion, and optionally selected 10-60 parts of water. The invention also discloses the preparation method and the application of the composition. The composition has the advantages of easiness in construction, good dust resistance, long service life, excellent artistic effect after coating, and broad application prospect.

The invention discloses a self-cleaning and purifying glass curtain wall. The self-cleaning and purifying glass curtain wall includes a first self-cleaning layer, a heat preservation board, an adhesive layer, a glass layer and a second self-cleaning layer which are arranged from the inside to the outside; the first self-cleaning layer and the second self-cleaning layer are composed of two components A and B according to the ratio of A:B = 2:1; and the A and B include the following components in parts by mass: the A component includes the following components in parts by mass of 9-14 parts of water-based resin emulsion, 10-13 parts of silicon carbide micro-powder, 35-40 parts of carbon dioxide nano-particles, 10-18 parts of flame retardant, 13-18 parts of coalescing agents, and 12-17 partsof defoamer; and the B component includes the following components in parts by mass of 26-29 parts of deionized water, 4-8 parts of anhydrous methanol, 13-18 parts of ethyl orthosilicate, 10-14 partsof concentrated ammonia water, 12-19 parts of plasticizer, 8-11 parts of styrene butadiene rubber, 14-19 parts of ultraviolet absorber, and 8-13 parts of auxiliary materials.