41results about How to "Not easy to dust" patented technology

The invention provides a device and a method capable of effectively cleaning dust on the surface of a heat exchange pipe and continuously operating for recycling afterheat of high temperature flue gas containing high adhesive dust and generating stream. According to the invention, a fuel is horizontally arranged, a heat pipe is used as a heat exchange element, the heat pipe is vertically arranged, and the lower segment of the heat pipe is at a free state for conveniently cleaning the dust. The heat pipe transmits the high temperature heat in the fuel to the water in a sleeve to evaporate water to generate stream so as to recycle the afterheat. A scraping plate is used as a dust cleaning device of the heat pipe in contact with the fuel gas, the scraping plate periodically moves up and down to scrap the dust at the outside of the heat pipe into a dust collection bin below a heat exchanger, and a sealed valve is arranged between the heat exchanger and a dust hopper to clean the dust online. According to the invention, the property of the heat pipe and the special scraping plate dust cleaning structure is utilized to solve the problem of cleaning the dust on the surface of the heat exchanger when recycling the afterheat of high temperature flue gas containing high adhesive dust.

The invention discloses a cement terrace production method comprising the following steps: carrying out machinery cleaning so as to expose a fresh structure layer of the ground, and cleaning work surface garbage; watering the ground, and cleaning extra water and mud; pouring concrete on the fresh structure layer, and leveling the concrete; paving wear resistant aggregate on the surface of the concrete for pulping smoothening treatment in a concrete initial setting period, and spraying pulping aid agent on the surface of the concrete for pulping shining treatment. The cement terrace production method can effectively solve the existing cement terrace cannot reach decoration effect.

The invention relates to a phenolic aldehyde foam plate, in particular to a modified phenolic aldehyde foam plate and a composite plate thereof, and a method for manufacturing the modified phenolic aldehyde foam plate and the composite plate thereof. The phenolic aldehyde foam plate comprises a phenolic aldehyde foam layer, wherein at least one three-dimensional fluffy material layer is filled in the upper surface, the lower surface and the interlayer of the phenolic aldehyde foam layer. Compared with the prior art, in the modified phenolic aldehyde foam plate manufactured according to the invention, an expandable phenolic aldehyde resin composite material is filled in the gap of the three-dimensional fluffy material to ensure that the phenolic aldehyde foam and the three-dimensional fluffy material become a whole and overcome the defects of poor toughness, low strength, easy dusting and easy pulverization of the conventional phenolic aldehyde foam material. The modified phenolic aldehyde foam plate has the advantages of excellent toughness, high strength, and has small possibility of dusting and pulverization.

The invention relates to a preparation process of CF50 concrete. The CF50 concrete comprises the following components in parts by weight: 160 to 170 parts of water, 350 to 360 parts of cement, 140 to150 parts of coal ash, 30 to 40 parts of micro-silicon powder, 680 to 700 parts of medium sand, 1050 to 1100 parts of gravel, 38 to 45 parts of steel fiber, 0.5 to 1.0 part of dispersant and 9.1 to 9.5 parts of water-reducing agent, wherein the gravel comprises 700 to 750 parts of small gravel and 250 to 280 parts of big gravel, the grain size of the small gravel is 5 to 25 mm, and the grain sizeof the big gravel is 5 to 10 mm. In the scheme, adhesive adopts the cement, the coal ash and the micro-silicon powder, the gravel comprises big gravel and small gravel, the big gravel serves as aggregate, the small gravel is filled in the big gravel and is used for guaranteeing the structural strength of the concrete, the micro-silicon ash is used for enhancing the hardness of the concrete, the steel fiber is used for enhancing the toughness of the concrete, and the prepared concrete has good anti-cracking effect, is not liable to generate ash and has high structural strength.

The invention provides a device which can be used for effectively recovering waste heat in moderate temperature flue gas high binding dust and a method. The waste heat recovery device provided by the invention adopts a flue which is horizontally arranged, a heat pipe is used as a heat exchange element, and a heat pipe heat absorption section is placed in the flue and can be used for absorbing heat of the flue gas; the heat pipe is perpendicularly placed, the lower section of the heat pipe is positioned in a free state, and a heat release section of the heat pipe is placed in a gas pipeline and can be used for transmitting heat to the gas; the outer side of the heat pipe contacted with the flue gas is provided with a scraping plate, the scrap plate can periodically do up-and-down movement, nodal ash of the outer surface of the heat pipe is scraped and drops in an ash collecting bin arranged below a heat exchanger. The waste heat recovery device and the method provided by the invention utilize the combination of the characteristic of the heat pipe and a special structure that the dust is removed by the scraping plate, and solve the dusting problem that the heat exchanger is difficult to perform ash removal when waste heat of the moderate temperature flue gas containing the high binding dust is recovered.

The invention relates to the technical field of sulfur granulation, and in particular, relates to a sulfur wet forming granulation production system and production process. The sulfur wet forming granulation production system comprises a liquid sulfur filter, a liquid sulfur distributor, a granulation main machine, a product dehydration vibrating screen and a product conveying device which are sequentially arranged; an exhaust device is further arranged at the upper end of the liquid sulfur distributor, and a cooling water treatment integrated tank is further arranged at the lower end of the product dehydration vibrating screen; the cooling water treatment integrated tank comprises a concentration tank, a water inlet tank, a sedimentation tank and a clear water tank which are sequentiallyarranged, a fine particle spiral lifting device is arranged in the concentration tank, and a pH monitoring device is arranged in the clear water tank. According to the sulfur wet forming granulation production system and production process, a produced sulfur solid particle product is spherical in shape, smooth in surface, uniform in particle size, free of any sulfur dust, not prone to dusting during bulk transportation and bagging transportation and extremely low in surface moisture content.

The invention discloses a displacement adjustment compensation device with a reserved space and a method for reserving the space. The displacement adjustment compensation device comprises a first supporting piece and a second supporting piece. The first supporting piece and the second supporting piece can oppositely move in the axial direction, and after moving, a gap for placement of filling can be formed, wherein at least one of two opposite faces, used for forming the gap, of the two supporting pieces is provided with a groove for containing the filling, moreover, at least one of the first supporting piece and the second supporting piece is provided with an opening, and the filling can enter the groove and the gap formed after moving through the opening.

The invention relates to a fitness site and particularly relates to a sponge fitness site which is characterized by mainly comprising a hardened road surface (1), a glue layer (2) and a waste rubber particle layer (3) from bottom to top, wherein the surface of the waste rubber particle layer (3) is provided with a hard ironing layer (4) formed by electrically heating an iron plate. The sponge fitness site provided by the invention has the advantages of elasticity, fast water penetration, large water storage capacity and long service life.

The invention discloses a conveyer system, belonging to a chemical industry production device. The conveyer system comprises a sealed shell, a feeding hole, a discharge hole, a driving wheel, a driven wheel, a bend wheel, a suction opening, a conveyer belt, a scraping device, a dumbbell basket type carrier roller, a carrier roller bearing seat and an adjusting screw rod. The conveyer system solves the technical problems that in the production process, dust is easily generated, equipment can be easily corroded, and bonding is easily caused. The conveyer system is mainly used as a chemical fertilizer production device or other chemical industry production devices. The conveyer system is low in manufacturing cost, long in service life and free from dust in the environment when in work, and ensures that the conveyer belt is not bonded with the dumbbell basket type carrier roller.

According to the desktop type bar code reading device for mobile payment, the light guide cover which uniformly diffuses the illumination light supplementing light source outwards is matched with the uniformly arranged lamp beads to serve as the illumination light supplementing light source, so that light generated by the illumination light supplementing light source can uniformly abut against the surface of a bar code to be shot. According to the method, two illumination light supplement control modes are set, under the first illumination light supplement control mode, the picture brightness can be rapidly adjusted to a proper range through fixed exposure parameters so as to adapt to reading of mobile phone payment codes with different screen brightness, and the mobile adaptability and the decoding success rate are improved. The light supplement with the set fixed time length enables the user to look continuous illumination and light supplement, and the illumination is soft, thereby facilitating the recognition and reading of the screen display bar code. Under the second lighting supplementary lighting control mode, fixed exposure parameters are adopted in the first two frames to adapt to reading of screen codes; other frames adopt an automatic adjustment exposure mode of the image sensor to adapt to reading of paper barcodes.

The invention relates to a plastering material. The plastering material is prepared from the following components in parts by weight: 20-30 parts of lime, 5-7 parts of honey, 8-10 parts of brine, 5-7 parts of magnesium oxide and 100-120 parts of water. The materials are combined together to prepare the plastering material, and the plastering material has good viscidity and high hardness, can replace the lime to be used in various aspects as a building material and overcomes the defects that the lime has poor viscidity and is easy to peel off as a building material.

The invention discloses a water-soluble efficient plant fertilizer and a preparation method thereof. According to the invention, water-insoluble chitin or chitosan, octadecanamide, citric acid and magnesium oxide are subjected to a mixing heating reaction to generate a coating composition, and the surface layers of urea-based compound fertilizer particles are coated with the coating composition, so that the water-soluble plant fertilizer with excellent properties can be produced.

A plastering material is prepared from the following components by weight: 20-30 parts of putty powder, 5-7 parts of honey, 8-10 parts of brine, 5-7 parts of flour and 100-120 parts of water. The putty powder, the honey, the brine, the flour and the water are used in combination, so that the plastering material is good in adhesion and high in hardness, and the problems that a stone material as a building material is lack of viscidity and easy to dust can be solved.