41results about How to "No edges and corners" patented technology

The invention belongs to the field of deep processing and utilization of nonmetal minerals, composite materials and functional materials, and particularly relates to coarse whiting filler for a gas-permeable membrane and a preparation method of the coarse whiting filler. The invention aims to provide the preparation method of the coarse whiting filler for the gas-permeable membrane. The preparation method comprises the following steps: crushing marble until the diameter is 40 to 70 micrometers; uniformly mixing marble powder, water and a high-molecular surfactant at a weight ratio of 1:(0.2-1.5):(0.001-0.1); ball-milling and filtering; dehydrating until the water content is not larger than 1%; dismissing gathered powder; drying until the water content is not larger than 0.2%; adding an activating agent of which the weight is 0.5% to 3% of the total weight of the dried powder material; fully reacting at the temperature of 110 to 140 DEG C; and cooling, uniformly mixing and packaging. The coarse whiting filler prepared by the method disclosed by the invention is good in performance and can be well applied to preparation of the gas-permeable membranes and relevant products.

The invention relates to an electrical vehicle, and aims to provide a portable full-automatic folding electrical vehicle which can realize the functions of full-automatic folding and unfolding, has an obviously reduced volume after folded and is convenient to carry. The portable full-automatic folding electrical vehicle comprises a main frame, a front driving wheel component, a rear wheel, a steering mechanism and a saddle mechanism, wherein the front end of the main frame is connected with the front driving wheel component by a front fork; the rear end of the main frame is connected with the rear wheel by a rear wheel frame; the saddle mechanism and the steering mechanism are arranged above the main frame respectively; and a brake device is fixed on the front fork, and can control the brake of the front driving wheel component. The product is designed in a full-automatic folding and unfolding mode; a full-automatic function is realized by a folding program controller, a first folding power device, a second folding power device and a third folding power device; and the portable full-automatic folding electrical vehicle has the obviously reduced volume after being folded, does not have edges and corners, has fashionable and attractive appearance, light weight and low energy consumption, is convenient to carry, and can run in a long distance.

The invention discloses a brass chemical polishing solution and a preparation method thereof, and one liter of the polishing solution contains 60-140g of persulfate, 200-350ml of 92.5 wt%-98.0 wt% concentrated sulfuric acid, 0-60ml of 85.0wt% strong phosphoric acid, 1-10g of citric acid, 2-10g of 7.H2O ferrous sulfate, 0-3g of sodium chloride, 0-6g of urea, 0.2-1.0g of sodium lauryl sulfate and balance of water. The invention adopts persulfate (kalium, sodium, ammonium and the like) as an oxidant to replace strong nitric acid, hydrogen peroxide and the like adopted for traditional chemical polishing, avoiding using the oxidant harmful to the environment and generating nitrogen oxide gas with strong toxicity for humans in the prior art; the brass chemical polishing solution has the characteristics of environmental protection, more stability (greatly improved by being compared with the stability of a hydrogen peroxide polishing solution), high polishing speed, good polishing effect andthe like. The brass polished through the brass chemical polishing solution has a flat and smooth surface and golden appearance.

The invention relates to a heat radiator and a manufacturing process of the heat radiator. The heat radiator comprises a heat radiator panel, and a heat radiator backboard, and is characterized in that the heat radiator panel is a rectangular slot having a rectangular orthogonal projection and an antiparallelogram cross section and an antiparallelogram longitudinal section; the heat radiator backboard is a rectangular slot having a bottom face smaller than the bottom face of the heat radiator panel and an edge folding angle the same as the edge folding angle of the heat radiator panel, convex ribs are arranged in parallel at an equal interval on the bottom face of the heat radiator backboard, the heat radiator backboard is arranged in the slot of the heat radiator panel, the convex ribs of the backboard bottom face contact and are fixed together with the bottom face of the panel, and the rabbet edge of the heat radiator panel and the rabbet edge of the heat radiator backboard are combined together so as to form a heat radiator liquid channel in the heat radiator; and a water pipe is arranged in the heat radiator liquid channel and a heating medium is filled in the heat radiator liquid channel. Advantages of the invention include good appearance, practicability, safety and durability, high heat radiating efficiency, simple manufacturing process, and high efficiency. The invention is suitable for large-scale flow line production.

The invention discloses a preparation method of a chitosan-coated heavy calcium carbonate anti-microbial filler for a breathable film. The preparation method mainly comprises the following steps of crushing, homogenizing, grinding, drying and modifying, and has the beneficial effects that by doping chitosan during a production process, a certain anti-microbial performance is endowed to composite powder; meanwhile, a hydrophobic property of the chitosan is beneficial for surface modification of calcium carbonate powder, so that the prepared calcium carbonate composite powder is good in surface sphericity, and uniform in particle size distribution. The preparation method provided by the invention is simple and convenient in technological operation, low in cost, and suitable for industrial large-scale production.

The invention discloses an anorectum support drainage tube for infants. The anorectum support drainage tube comprises a transparent catheter with a round periphery and smooth lines, elliptical quick discharge holes, an inverted-gourd-shaped air bag and a conical disc-shaped buckle. Scales are arranged on the wall of the catheter, an oblique plane at the angle ranging from 30 degrees to 50 degrees is arranged at an upper port, the elliptical quick discharge holes are formed in two sides of the catheter and are positioned below the upper port, the inverted-gourd-shaped air bag annularly sleeves a position below the quick discharge holes of the catheter, and the conical disc-shaped buckle annularly sleeves a position below the inverted-gourd-shaped air bag on the catheter. The anorectum support drainage tube has the advantages that the anorectum support drainage tube can bring convenience for observing anastomotic stomas, is large in relative vertical plane drainage area and can bring convenience for quickly effectively discharging different types of intestinal juice, secretion and feces in intestinal tracts, the anorectum anastomotic stoma can be uniformly compressed, internal hemorrhage can be reduced, and anastomotic stoma scar contracture can be prevented and treated; the anorectum support drainage tube is easy to operate, tube change operation can be carried out at any time as needed, suture fixation can be omitted, and accordingly suffering of child patients can be relieved; different models of anorectum support drainage tubes with different sizes and lengths can be selected according to growth and development characteristics of the infants; the anorectum support drainage tube is suitable for postoperative posterior anorectum anastomotic stoma treatment on the infants.

The invention belongs to the technical field of molecular sieves, and particularly relates to a preparation method of a professional molecular sieve desiccant for a brake system, which comprises the following steps of: preparation of synthetic zeolite raw powder; uniform mixing of the raw materials: feeding the synthetic zeolite and an adhesive into a premixing device according to a ratio for mixing; ball rolling treatment: performing vibration screening, performing secondary ball rolling operation, and adding 2-6wt% of an inorganic silicon solvent in the secondary ball rolling process; drying: controlling the humidity of a molecular sieve to be 20-40% of the total weight of the molecular sieve; roasting: feeding the dried molecular sieve into a roasting furnace, and roasting for 30-120 minutes at the temperature of 200-850 DEG C; screening and heat dissipation: performing screening and heat dissipation treatment on the molecular sieve obtained by roasting; and vacuum treatment, packaging and warehousing. According to the method, the synthetic zeolite raw powder is used as the raw material, so that the cost is lower, and the finished molecular sieve is uniform in size and quality,and has better adsorption capacity and lower wear rate.

The invention discloses a wind power fan fixing device, and belongs to the technical field of wind power generation. The wind power fan fixing device comprises an upper support, a lower support, a plurality of telescopic supporting mechanisms and inhaul cable mechanisms; and the middles of the upper support and the lower support are connected through the telescopic supporting mechanisms, the sideparts of the upper support and the lower support are connected through the inhaul cable mechanisms, and a motor main rod penetrates through an upper support through hole and a lower support through hole and then is connected with a foundation. The distance between the upper support and the lower support can be adjusted through the telescopic supporting mechanisms, and then the height of the wholefixing device is adjusted according to the height of the motor main rod, so that a fan is more accurately fixed; and the radial dimension of the upper support is smaller than that of the lower support, thus the upper support, the lower support and the inhaul cable mechanisms connecting the upper support with the lower support can form a stable oblique supporting structure, and the stability is further improved. The telescopic supporting mechanisms are connected through threads, the inhaul cable mechanisms are connected through T-shaped clamping grooves and T-shaped clamping blocks, on the onehand, a connection structure is reliable, on the other hand, mounting and dismounting are convenient, the wind power fan is convenient to mount, dismount and repair, thus faults are found in time, andpotential safety hazards are reduced.

The invention relates to a polyurethane material for preparation of a scratch-proof spectacle frame. The polyurethane material is prepared from the following raw materials in parts by weight: 25-80 parts of polyether glycol, 0.4-1 part of a catalyst, 5-20 parts of polyisocyanate, 3-10 parts of a vulcanizing agent. The invention further provides the preparation method of the polyurethane material for preparation of the scratch-proof spectacle frame. According to the invention, the scratch-proof spectacle frame prepared from the polyurethane material has the advantages that the frame is primarily shaped, free of corner angles, deformation resistant, does not produce a fracture surface during collisions, so that a scratch on the face and eyeballs of a passenger can be avoided. The preparation method provided by the invention is simple and easy to implement.

The invention provides a digital bath method on the basis of internet+ technologies, and belongs to the technical field of computers. The digital bath method has the advantages that campus bath investment, operation and management are proposed, and online payment, consumption, reservation, queuing, analysis and management can be implemented in a novel service mode by the aid of internet+, cloud computing, big data and internet-of-things technologies; conditions of multiple cards and card loss can be effectively prevented for students, and a foundation can be laid for online campus all-purposecard practice.

The invention discloses an aqueous acrylic flame retardant coating. The coating comprises the following components in parts by mass: 30-50 parts of aqueous acrylic acid, 5-10 parts of ammonium polyphosphate, 10-20 parts of asbestos powder, 5-10 parts of melamine, 8-15 parts of coated mica powder, 5 to 8 parts of temperature resistant pigment, and 30 to 40 parts of deionized water. The preparationmethod comprises the following steps: S1: weighing aqueous acrylic acid, ammonium polyphosphate, asbestos powder, melamine, coated mica powder and temperature-resistant pigment to obtain a preliminarymixture; S2: grinding the preliminary mixture, adding deionized water to mix and stir the materials, and finally filtering the material with a 200-mesh screen; and S3: packaging. The construction process comprises the following steps: A1: pretreatment of a part to-be-painted; A2: preparation of the aqueous acrylic flame retardant coating, and applying the primary coating to the part to-be-painted; and A3: performing the secondary coating, wherein a coating thickness in the primary coating and the secondary coating is 80 to 120 microns.

The invention discloses a rotary folding dining table which comprises a fixed base and a rotary folding part. The fixed base comprises a first tabletop, a bottom tabletop and a fixed shaft. The firstshaft is perpendicularly installed between the first tabletop and the bottom tabletop. The rotary folding part comprises a bottom rotary tabletop, two arc tabletops and two movable cushion blocks, wherein the two arc tabletops are symmetrically arranged at the two ends of the bottom rotary tabletop. The tabletops have a folding function, the folding mode is simple, and no corners exist after folding.

The invention discloses a preparation method of a high alumina ceramic material with a microcosmic convex-concave and ploughing-type surface structure and a product prepared by the preparation method. According to the preparation method, 1-6 wt% of a composite additive is introduced into alumina ceramic ingredients; and after moulding and through proper high-temperature sintering and grinding polishing processes, the high alumina ceramic material with the microcosmic convex-concave and ploughing-type surface structure is obtained. The surface of the material is a microcosmic convex-concave and ploughing-type surface structure. The convex-concave surface is smooth in transition and has no corner angle, and glossiness is about 45%. The high alumina ceramic material has a wide application prospect in the manufacture field of a low-friction ceramic yarn guide for a high-speed spinning machine.

The invention discloses a method for preparing spherical activated carbon and a disc pelletizer. The method comprises the following steps of: grinding carbon powder and coal pitch powder, wherein the carbon powder is coal powder, charcoal powder or a mixture of the coal powder and the charcoal powder in a ratio of 1:1; mixing, and adding prepared modified water; pelletizing by using the disc pelletizer, and drying; and carbonizing, and activating. In a main structure of the disc pelletizer, a seed disc which is concentric and coaxial with a pelletizing disc is arranged, and spheres automatically roll in the pelletizing disc when the diameter of the spheres in the seed disc is 0.5 to 1.0mm, and grow in the pelletizing disc, so that the area of the pelletizing disc is fully utilized, and production efficiency is high. The spherical activated carbon produced by the method has high specific surface area and mechanical strength, is not provided with edges, has a low pulverization degree in conveying, adsorbing and regenerating systems and the like, and has uniform bed resistance and low pressure drop; and special equipment and a steam heat preservation system are not needed in the production process, a forming die is not needed, energy-saving and environment-friendly effects are achieved, and popularization and application are facilitated.

The invention relates to a farmland insect-killing device applied to modern agriculture. The insect-killing device includes a light transmitting trapping box and an inner cleaning barrel; the trappingbox is hollow on the inside and open at the upper end; a sealed transparent cover body is arranged on the inner bottom wall of the trapping box in an upward protruding mode, and a trapping light source is arranged inside the cover body; the inside of the trapping box is filled with trapping fluid, and the cover body is immersed in the trapping fluid; the inner cleaning barrel is made of a translucent material and is arranged as a cylindrical structure matching with the trapping box; the inner cleaning barrel is hollow on the inside and open at the upper end, the middle of the bottom wall protrudes upward to form an inserting part corresponding to the cover body, and fine holes for liquid infiltration are uniformly formed in the side wall and bottom wall of the inner cleaning barrel; the inner cleaning barrel is arranged inside the trapping box in a sleeving mode, and the upper end of the cover body is inserted into the inserting part. The farmland insect-killing device has the advantages that the structure is simple, the light expelling effect can be effectively utilized to kill field pests, pest corpses in the trapping box can be quickly cleaned for use at next time, the use costis low, the device is more practical, suitable for mass production, and has high economic benefits.

The invention relates to a simple farmland insect killer comprising a light-transmitting trapping box, a canopy and a pile body; the trapping box is hollow inside and open at the upper end; the canopyis mounted above the trapping box and covers the open end of the trapping box; the middle part of the bottom wall of the trapping box in inwards and vertically protruded to form a cylindrical light-transmitting cover body provided with an opening in the lower end, and a trapping light source is arranged in the cover body; the trapping box is filled with a trapping liquid, and the cover body is immersed into the trapping liquid; the upper end of the pile body is provided with a cylindrical plug matched with the open end of the cover body; and the inner wall of the open end of the cover body isprovided with an internal thread, the outer wall of the plug is provided with an external thread, the pile body is vertically arranged below the trapping box, and the plug is mounted in the open endof the cover body in a threaded way. The simple farmland insect killer has the advantages that farmland insects can be effectively killed by utilizing an optical driving effect, and the simple farmland insect killer is low in use cost, relatively strong in practicability, suitable for mass production and high in economic benefit.

The invention discloses a fairing and a production method thereof. The fairing comprises a main frame and two auxiliary side plates symmetrically assembled on the left side and the right side of the main frame; the main frame comprises a bottom plate and two main side plates symmetrically arranged on the front side and the rear side of the bottom plate; an opening is formed in the bottom end of the bottom plate, the bottom plate is provided with a bent edge which is bent upwards, and the left side and the right side of each main side plate are respectively bent inwards to form flattened edges which are attached to the main side plate; each auxiliary side plate comprises a meshing edge and a side inclined plate which are sequentially arranged from bottom to top, and the front side and the rear side of the side inclined plate are respectively bent inwards to form fins, the outer surface of the meshing edge coincides with the inner surface of the corresponding bent edge, and the fins coincide with the corresponding flattened edges, and the meshed edge and the bent edge which are overlapped as well as the fins and the flattened edges which are overlapped are fixedly connected through connecting assemblies respectively. The fairing is formed by assembling the main frame and the two auxiliary side plates, and the production efficiency is high.

The invention relates to a glass edge protective sleeve. At present, in a market, problems exist in the glass edge protective sleeve, for example a common operator can not produce, and a glass edge protective sleeve is poor in quality, small in specifications, poor in strength. The glass edge protective sleeve comprises glass, a covered edge is arranged on one side of the glass in a covered mode, a gap is arranged between the glass and the covered edge, and the covered edge is round and made of alkyl benzo sulfonate (ABS) materials. The ABS materials are adopted by the glass edge protective sleeve to be manufactured, and the glass edge protective sleeve is good in hand feeling, and big in anti-bending strength, has no edges, and is easy to install, simple and easy to operate, shockproof, waterproof, durable and convenient to maintain. The glass edge protective sleeve increases decorative effect and specifications and has certain market and economic value.

The invention relates to a farmland pest killing device based on modern agriculture. The farmland pest killing device comprises a light-transmitting trap box, a rain shelter, a pile body and a photovoltaic panel, wherein the trap box is hollow inside and has an opening upper end, the rain shelter is installed above the trap box, the middle of the bottom wall of the trap box protrudes verticallyto the interior of the trap box to form a cylindrical light-transmitting cover body with an opening lower end, a trapping light source is arranged in the cover body, the trapping box is filled with atrapping liquid, the cover body is immersed in the trapping liquid, the upper end of the pile body is provided with a sealing plug matching with the opening end of the cover body, the pile body is vertically arranged below the trap box, the sealing plug is threadedly installed in the opening end of the cover body, the photovoltaic panel is installed at the upper end of the rain shelter, an inverter and a storage battery are arranged on the pile body, the inverter is electrically connected to the photovoltaic panel and the storage battery through circuits respectively, and the storage batteryis electrically connected to the trapping light source through a circuit. The farmland pest killing device has the advantages that the farmland pest killing device can effectively use an optical driveeffect for killing and exterminating pests in the field, has low using cost and strong practicality, achieves energy conservation and consumption reduction, is suitable for mass production and has high economic benefits.