94results about How to "Not easy to deform and break" patented technology

The invention relates to a valve mechanism of a switch cabinet, comprising a middle clapboard, fixed pulleys, ropes, upper and lower valves and lower valve operating mechanisms which are fixedly arranged on cabinets at the left and right sides of the middle clapboard and are connected with the lower valve, wherein each lower valve operating mechanism comprises a master connecting rod with one end rotatably arranged on the cabinet at the left or right side of the middle clapboard, a resetting device which is arranged between the cabinet and the master connecting rod and realizes resetting of the master connecting rod driven by external force to rotate, a handcart force applied portion which is arranged on the master connecting rod and is used for a push board of the handcart to apply force to the master connecting rod so as to drive the master connecting rod to rotate, and a slave connecting rod with one end hinged with one end of the lower valve at the same side and the other end hinged with the other end of the master connecting rod; and driven by the master connecting rod, the slave connecting rod drives the lower valve to move up and down. The valve mechanism has simple structure, long service life and good synchronicity.

The invention discloses face-nourishing fresh flower-sweet ferment rice artificial rice consisting of the following raw materials in parts by weight: 90-100 parts of rice flour, 15-20 parts of corn flour, 15-20 parts of glutinous rice flour, 7-8 parts of fresh sweet-scented osmanthus, 6-8 parts of fresh rose flowers, 6-7 parts of edible lily flowers, 9-10 parts of sweet ferment rice, 5-6 parts of honey, 1-1.3 parts of flowers of abutilon peniculatum, 1.5-2 parts of radix ophiopogonis, 0.8-1 part of all-grass of globose phaenosperma, and a proper amount of a composite mineral, starch, table salt and water. The artificial rice has a two-layer covering film, is not easy to deform and break during soaking, steaming and cooking, and better maintains the appearance of rice grains; the glutinous rice flour has better viscosity, and increases the adhesiveness between the raw materials; the added sweet-scented osmanthus, rose flowers and lily flowers have rich nutritional ingredients, have the efficacies of nourishing face, building bodies and the like, can make the finished product have a flower fragrance, and increase appetite; and the added various Chinese herbal medicines make the product have the health care efficacies, for example, radix ophiopogonis has yin-nourishing and lung-moistening efficacies.

The invention discloses a forced-feeding method for improving growth quality of goose fat liver, feed thereof and a forced-feeding machine thereof. The forced-feeding method is characterized in that geese are fattened after being fed for 60 days, the geese are forcedly fed after being fattened, the forced-feeding is carried out for four times per day in the first 7 days of forced-feeding period, the forced-feeding is carried out for five times per day in the 8th to 12th days of the middle period, the forced-feeding is carried out for six times per day in the 13th to 18th or to 20th days of last period, and the total amount of forced-feeding is 1000-1500 g / head everyday. The feed takes yellow maize as base material, and 2.5% of goose fat liver, 1.2% of salt, 0.01%-0.02% of electrolytic polyvitamines and 5% of fermented protein feed, and the mass ratios are added. The forced-feeding machine comprises an underframe and a bracket; a seating bench is installed at the back of the underframe; a hopper is installed on the top of the bracket; the front part of the hopper is connected with a forced-feeding pipe; a spring connected with a transmission gear is installed inside the hopper; the middle part of the bracket is provided with a programmed switch controlling the transmission gear; the front part of the underframe is provided with a foot board connecting and controlling the programmed switch. The invention can efficiently improve the quality and capacity of goose fat liver.

The present invention discloses toxin-expelling lotus leaf fragrance and crab meat artificial rice which is prepared from the following raw materials in parts by weight: 95-100 parts of polished round-grained rice flour, 20-30 parts of glutinous rice flour, 30-35 parts of chickpea flour, 10-13 parts of crab meat, 1-2 parts of fresh ginger, 3-4 parts of rice wine, 3-4 parts of lily, 3-4 parts of fresh lotus leaves, 1-2 parts of chrysanthemum leaves, 1-2 parts of indocalamus leaves, 1.3-1.6 parts of phoenix tree leaves, a proper amount of starch, a proper amount of salt and a proper amount of water. The artificial rice has two coating layers, so that the artificial rice is not prone to being deformed and broken at the time of soaking and cooking to better keep the grain shape; the glutinous rice flour has better viscosity to strengthen the viscosity, elasticity and extensibility between materials; the crab meat contains rich proteins and trace elements, has a very good nourishing effect to the body, and has effects in clearing away heat and toxic material, tonifying bone and replenishing marrow, and nourishing hepatic yin; and the cooperation of crab meat and lotus leaves with a heat-clearing effect can help expel toxin. The lotus leaf-wrapped crab meat is boiled in the rice wine to remove the crab meat smell, which also increases the fragrance of lotus leaves for the artificial rice.

The invention belongs to the technical field of wheels and provides a variable-speed hub motor which solves the problems that an original supporting shaft is provided with a guiding groove, an adjusting rod hole and a power line hole, and therefore the strength of the supporting shaft is lowered, the supporting shaft is prone to deformation and breakage, driving safety is affected, and heat of a motor wrapped by a hub ring can not be dissipated effectively. The variable-speed hub motor comprises a hub ring which is connected with an end face, the end face is connected with a hollow output shaft, a motor body is fixed on a supporting shaft, a power line of the motor body directly stretches out of a motor shell, and the motor body and a gearbox body are exposed out of the end face. The variable-speed hub motor is characterized in that the supporting shaft and a motor shaft are parallel, a driven gear is provided with inner teeth, the hollow output shaft is provided with a pawl moving groove, a pawl shaft penetrates through a pawl arranged in the pawl moving groove, the pawl can tilt in the pawl moving groove, and the pawl moving groove is provided with a pressure spring enabling one end of the pawl to tilt and to be clamped on the inner teeth.

The invention discloses a high-chromium alloy wear resistant lining plate for an impact crusher and a preparation method thereof. The lining plate comprises the following alloy elements in percentage by mass: 2.0-2.8% of C, 1.0-1.5% of Mn, 0.3-0.8% of Si, 13-16% of Cr, 0.5-1.0% of Ni, 0.12-0.25% of B, 0.30-0.45% of Mo, 0.22-0.40% of Cu, 0.05-0.15% of Re, 0.05-0.15% of Rh, and the balance of Fe and inevitable impurities. The lining plate further comprises ZrC powder being 2-4% of total mass of high-chromium cast iron. The prepared high-chromium alloy wear resistant lining plate is excellent in quality, high in strength, excellent in wear resistance, not easy to deform and break and long in service life, and is 5-7 times of the life of a general high-chromium alloy wear resistant lining plate.

The invention discloses a composite punch die for a workpiece with multiple long slotted holes. The composite punch die comprises an upper die and a lower die, wherein a plurality of strip-shaped through holes are formed on a stripper plate of the upper die, and a plurality of connecting blocks are arranged in an upper opening part of each strip-shaped through hole at intervals; and the upper dieis provided with a plurality of strip-shaped punch needles, and each strip-shaped punch needle upwards passes through the corresponding strip-shaped through hole of the stripper plate and is fixed inside a corresponding mounting hole of a punch needle plate. The lower die comprises a lower male die arranged on a lower template, beat needle assemblies, and a base, wherein a plurality of strip-shaped knife edges are arranged on the lower male die, a plurality of connecting parts are reserved on the lower opening part of each strip-shaped knife edge at intervals, and each strip-shaped knife edgeis internally provided with a jacking plate; each beat needle assembly consists of a plurality of rows of beat needles; and the base is internally provided with a plurality of pairs of oil hydraulic cylinder and piston, the beat needle assembly is fixed on each piston, and the lower template is fixed on the base. According to the invention, due to the reserved connecting parts on the strip-shapedknife edges of the lower male die, the composite punch die is increased in structural strength and cannot deform or be fractured easily; and by punching the needles on the punch needle plate by tightly buckling and fixing the punch needles through buckling blocks, so that the problem that the multiple long slotted holes of an aluminum substrate cannot be in close fit with the punch needles is solved; and workpiece wastes are discharged upwards hydraulically, so that the working efficiency is high and the energy consumption is low.

The invention relates to a fork-lift truck steering knuckle cast steel material and a preparation method thereof. The fork-lift truck steering knuckle cast steel material contains, by weight, 0.15-0.35% of carbon, 1.2-1.4% of silicon, 4.2-4.5% of manganese, 0.01-0.03% of phosphorus, 0.015-0.04% of sulfur, 3.2-3.5% of chromium, 0.1-0.3% of cooper, 1.2-1.4% of vanadium, 0.4-0.6% of molybdenum, 2.5-2.7% of tungsten, 0.3-0.4% of Ni, 0.2-0.3% of As, 0.6-0.8% of Hf, 0.1-0.15% of Bi, 0.26-0.36% of Be, 0.23-0.29% of Pb, and the balance of iron. The cast steel material has characteristics of wear resistance, high impact toughness, high strength, high cast initial hardness, high yield strength, and deformation fracture resistance.

The invention relates to a compounded rubber overall-diaphragm filter plate. The compounded rubber overall-diaphragm filter plate comprises a steel filter plate, wherein a charging hole is formed in the center of the filter plate; a filter frame formed by welding of round steel is arranged at the peripheral edges of the front and rear surfaces of the filter plate; handles are arranged on two sides of the filter frame; a diaphragm covers the outer surfaces of the filter frame and the filter plate and is hermetically glued to the filter plate at the filter frame and the charging hole; a closed cavity is formed between the diaphragm and each of the front and rear surfaces of the filter plate; the middle and periphery of each closed cavity are closed; a compression medium inlet which is communicated with the two closed cavities is formed in one side of the filter plate; filter cloth covers the outer side of the diaphragm. The compounded rubber overall-diaphragm filter plate is high in elasticity, good in sealing performance, good in temperature resistance, good in structural strength, long in service life, unlikely to deform and break, and low in comprehensive maintenance cost; a steel framework can be repeatedly utilized.

The invention discloses a waste heat isothermal normalizing treatment method for medium carbon steel forging. The method comprises the following steps that in the tenth step, austenitizing treatment is conducted, after a medium carbon steel component is forged, austenitizing treatment is conducted within a forging stop temperature range, heat preservation is conducted, and the heat preservation time is determined according to the effective component thickness; in the twentieth step, quenching is conducted, the component obtained after heat preservation is rapidly placed in a flowing water base suspension liquid quenching medium to be cooled and then taken out to stay in air, and the above cooling and staying processes are repeatedly conducted many times; in the thirtieth step, the component is placed in a resistance furnace, and heat preservation is conducted at the normalizing temperature; and in the fortieth step, cooling is conducted, and the component obtained after normalizing is taken out and cooled to the room temperature in air. According to the waste heat isothermal normalizing treatment method for medium carbon steel forging, network ferrite cannot occur, strength and plasticity are not lowered, and brittleness is not increased.

The invention discloses a preparation method and application of hyperbranched polyacrylamide nano-microspheres for profile control and displacement of low-porosity and low-permeability oil reservoirs, wherein benzenehexacarboxylic acid is used as a rigid structure branching agent, an inverse emulsion polymerization method is adopted, and copolymerization with dialkylamine, acrylamide, an anionic unsaturated monomer and N, N-methylene bisacrylamide is carried out to form the hyperbranched polyacrylamide nano-microspheres. The particle size distribution of the nano-microsphere is 10-60 nm, the expansion multiple is larger than 15 times under the high-temperature and high-salt conditions, meanwhile, the stability reaches 12 months, meanwhile, the nano-microsphere can expand under the high-temperature and high-salt conditions, and aiming at the characteristics of low-porosity and low-permeability oil reservoirs, the polyacrylamide nano-microspheres have good development prospects and economic benefits in the field of development of low-porosity and low-permeability oil reservoirs.

The invention discloses a mirror front panel structure for the indoor machine of an air conditioner, which comprises a plastic bottom plate and a glass plate fixed on the front surface of the plastic bottom plate. The back surface of the plastic bottom plate is provided with a metal reinforced bar. The metal reinforced bar is provided with reversed U-shaped salients spaced in a certain distance. The metal reinforced bar can be connected with the back surface of the plastic bottom plate through a screw or an adhesives. The invention is designed with a metal reinforced structure fixed on the back side of the plastic bottom plate to lead the plastic bottom plate to have a higher bearing capacity and the front glass plate to be difficult to deform and crack. Besides after the front penal is reinforced, the shake to the front panel when air intake is reduced; thereby reducing the noise.

The invention relates to a high-conductivity copper alloy material and a manufacturing method thereof. The high-conductivity copper alloy material mainly comprises copper element and also comprises zinc, antimony, tellurium, titanium, tin, cobalt, zirconium, phosphorus and iron. The copper alloy material comprises the following components in percentage by weight: 5-8 percent of zinc, 0.25-0.39 percent of antimony, 0.2-0.3 percent of tellurium, 0.1-0.14 percent of titanium, 0.08-0.15 percent of tin, 0.05-0.15 percent of cobalt, 0.01-0.05 percent of zirconium, 0.07-0.15 percent of phosphorus and 0.8-1.6 percent of iron. The method for manufacturing the high-conductivity copper alloy material comprises the following steps: (1) preparing a fused solution of copper; (2) preparing a mixed fused solution of zinc, antimony, tellurium, titanium, tin, cobalt, zirconium, phosphorus and iron; (3) mixing the mixed fused solution obtained in the step (2) with the fused solution of copper; (4) performing solution treatment on the mixed fused solution obtained in the step (3), thus obtaining a copper alloy; and (5) performing aging treatment on the copper alloy.

The invention provides a wet adhesion super-lubricating hydrogel coating and a preparation method thereof. The preparation method comprises the following steps: adding a hydrogel monomer and sodium alginate powder into deionized water, then sequentially adding a cross-linking agent N, N 'methylene bisacrylamide, a cross-linking accelerant tetramethylethylenediamine, a hydrophilic photoinitiator ammonium persulfate and an ionic cross-linking agent calcium sulfate dihydrate, then adding an adhesive, and uniformly mixing to obtain a pre-gel solution; and immersing a substrate in the pre-gel solution, taking out the substrate, placing the substrate at room temperature for illumination, and completing a polymerization reaction through photo-initiation to obtain the wet adhesion super-lubrication hydrogel coating. The obtained hydrogel has a double-network water structure, can effectively dissipate applied stress, is good in mechanical property, and effectively solves the problems of fracture and deformation caused by bending of a coating; meanwhile, good hydrophilicity and good adhesion are achieved. The hydrogel coating is convenient to use and rapid in film forming, and is expected to be applied to medical catheters, Foley catheters, cardiac pacemaker leads and large-scale soft robots.

The invention discloses a polyvinyl chloride composite foaming material comprising the following raw materials in parts by weight: 68-72 parts of polyvinyl chloride resin, 12-14 parts of dibutyltin maleate, 15-17 parts of a composite carbon nanotube monomer, 68-73 parts of an initiator, 1-2 parts of a plasticizer, 2-3 parts of an antioxidant, 5-7 parts of an anti-aging filler, 6-9 parts of formaldehyde, 3-5 parts of a polyurethane foaming agent, and 170-180 parts of tetrahydrofuran. By addition of the composite carbon nanotube monomer in the material, carbon nanotubes can be grafted onto a polyvinyl chloride branch chain through free radical polymerization, the tensile strength and the impact resistance ability of a foaming material can be greatly improved, particularly, the foaming material is not easy to break and deform when bearing large pressure or impact force, the problem that a conventional polyvinyl chloride foaming material has many bubble holes in the material so as to leadto reduction of the impact resistance of the foaming material is solved, and then the material can keep a shape unchanged under the relatively strong action.

The invention relates to a valve mechanism of a switch cabinet, comprising a middle clapboard, fixed pulleys, ropes, upper and lower valves and lower valve operating mechanisms which are fixedly arranged on cabinets at the left and right sides of the middle clapboard and are connected with the lower valve, wherein each lower valve operating mechanism comprises a master connecting rod with one endrotatably arranged on the cabinet at the left or right side of the middle clapboard, a resetting device which is arranged between the cabinet and the master connecting rod and realizes resetting of the master connecting rod driven by external force to rotate, a handcart force applied portion which is arranged on the master connecting rod and is used for a push board of the handcart to apply forceto the master connecting rod so as to drive the master connecting rod to rotate, and a slave connecting rod with one end hinged with one end of the lower valve at the same side and the other end hinged with the other end of the master connecting rod; and driven by the master connecting rod, the slave connecting rod drives the lower valve to move up and down. The valve mechanism has simple structure, long service life and good synchronicity.

The invention relates to a grinding process for bamboo products, namely bamboo splints, and belongs to a bamboo splints processing method. Cut surface green bamboo chips are subjected to stewing, fiber forming, water milling, bleaching and drying to obtain the bamboo splints. The water milling treatment can effectively remove burrs and stains on the surfaces of the bamboo splints, so that the produced bamboo splints have smooth surfaces without the burrs and do not prick the hand; and the waste materials obtained after the water milling can be directly used for paper making, so that no pollution is caused and the environmental protection is ensured. The processed bamboo splints can be widely used in bamboo products such as bamboo mats, bamboo pillows, bamboo curtains, bamboo carpets, bamboo-splint woven handicraft articles and so on.

The invention discloses an aquatic shrimp processing and drying device. The device comprises damping mechanisms, a servo motor, a fixing frame and a main body, wherein a PLC is installed on one side of the main body, and the damping mechanisms are arranged at the four corners of the bottom end of the main body. By installing sliding strips, sliding grooves, locking bolts, bolt assembling holes, adrying chamber, the fixing frame, a reinforcing layer and U-shaped reinforcing ribs, the structure of the device is optimized; when the device is used, on one hand, a user can use a sliding connectionstructure composed of the sliding strips and the sliding grooves to disassemble and assemble the drying chamber and the fixing frame in cooperation with the locking and fixing effects of the lockingbolts, so that the device has the advantage of being combined, is convenient to disassemble and maintain and can be used for a long term; and on the other hand, the reinforcing layer and the U-shapedreinforcing ribs are arranged in the side wall of the drying chamber, so that the structural strength of the drying chamber is enhanced and the drying chamber is not easy to deform and crack during long-term use, disassembly and maintenance.

The invention discloses blood-replenishing arrowhead and chicken liver synthetic rice. The synthetic rice is prepared from, by weight, 130-140 parts of rice flour, 20-30 parts of myotonin flour, 35-42 parts of glutinous rice flour, 3-4 parts of sword beans, 6-7 parts of arrowheads, 5-6 parts of chicken livers, 4-5 parts of raspberries, 6-7 parts of highland barley, 4-5 parts of soybeans, 1-2 parts of ash bark, 1.2-1.5 parts of citronella flowers, 1.8-2 parts of chuanxiong rhizomes and a proper amount of complex vitamin, starch, salt and water. The synthetic rice has two layers of coatings and is not prone to deformation or breakage in the soaking or boiling process, and the appearances of rice grains are better kept; the glutinous rice flour has good stickiness, and the adhesion between materials is enhanced; the highland barley and the soybeans are stir-fried and ground into powder before being added, so that the finished product is better in taste and has a scorch aroma; the added arrowheads, chicken livers and other raw materials have rich nutritional elements, and the effects of replenishing blood, protecting the eyes, promoting production of body fluid and nourishing the lung are achieved.

This is a kind of handrail made of composite materials and its manufacturing method. The handrail is formed from casted the large pole, the upper handrail and the small pole having the framework of hollow glass steel or metal molding material and whose exterior is the macromolecule scagliola layer, that are fixed by bolt. The whole has the fireproof and waterproof capability. There are macromolecule fibre and luminous powders in the material. It also adopts the manufacturing technics of vacuum whisking and pumping into vacuum. Therefore there is no air hole in the material and it has high density and good mechanical intensity, rigidity and toughness. Besides it can point out a bright road for people especially in the gloomy emergency at night or in power cut.

The invention discloses a multifunctional integrated bracket which comprises an electric generator bracket body, air conditioner compressor mounting holes, electric generator mounting holes and a multi-wedge belt idle pulley assembly mounting hole; a plurality of electric generator bracket mounting holes are formed in the side surfaces of the electric generator bracket body; a tension pulley mounting boss is arranged at the middle part of the front surface of the electric generator bracket body; a tension pulley assembly mounting hole and a tension pulley assembly locating hole are formed in the tension pulley mounting boss; the air conditioner compressor mounting holes are formed in one side of the upper part of the front surface of the electric generator bracket body; an arc-shaped compressor yielding groove is formed between the two air conditioner compressor mounting holes; the electric generator mounting holes are formed in one side of the lower part of the front surface of the electric generator bracket body and are located below the air conditioner compressor mounting holes; and an electric generator yielding groove is formed between the two electric generator mounting holes. The multifunctional integrated bracket meets the arrangement requirement of a compact type electric generator under the condition that a space is narrow, and the multifunctional integrated bracket is reliable in structure and is not prone to deformation or breakage.

The invention discloses an offshore cleaning device with an adjustable cleaning range for ocean oil spill treatment. The offshore cleaning device comprises an oil boom, a ship body, a solar cell paneland a control box. A storage tank is disposed in the ship body. An oil suction pump is disposed at one end of the top of the storage tank. The output end of the oil suction pump communicates with theinterior of the storage tank. The input end of the oil suction pump is in threaded connection with an oil suction pipe. A machine shell is welded to one end of the top of the ship body. A storage battery is disposed in the machine shell. The control box is disposed at the top end of the machine shell. By disposing the oil boom, an anti-explosion air bag, hanging rings and hooks, the offshore cleaning device optimizes its performance, a user can replace the oil boom with other oil booms of different lengths on the ship body by using the connection action of the hanging rings and the hooks so as to change the area of a surrounded oil spill region, and therefore the cleaning range is adjusted, the applicability of the offshore cleaning device is enhanced, and the offshore cleaning device canbe easily popularized in a long run.

The invention discloses a safe and reliable crane, and relates to the technical field of cranes. The safe and reliable crane specifically comprises a column body and a second rotating shaft, a mounting flange is fixed to the outer wall of the column body, a first rotating shaft is arranged at the upper end of the column body, and a connecting column is arranged at the upper end of the first rotating shaft. The safe and reliable crane for communication is provided with an extendable rod, the extendable rod fixed to the outer wall of a shell can rotate and extend through threads, and therefore a fixing piece at the tail end of the extendable rod tightens and fixes an auxiliary arm, so that a stable triangular structure is formed among the extendable rod, the auxiliary arm and the connecting column, the bearing performance of the auxiliary arm and a main arm is greatly improved, it is guaranteed that the crane is not prone to being broken and deformed when lifting heavy goods, and the safety of the crane is improved; and the fixing piece can be adjusted at all angles and in all directions so that the fixing piece can be fixed to the auxiliary arm in a more attached mode, the shell and the second rotating shaft ensure that the extendable rod can smoothly rotate along with the first rotating shaft and does not interfere with each other, and the structure is more reasonable and reliable.

The invention provides an outer shell structure of an automobile metal motor, which comprises an inner shell, a radiating fin, an outer shell, a clamping slot, a connecting plate and a fixing seat. The heat dissipation fin is arranged on the upper part of the inner shell, and the heat dissipation fin and the inner shell are of an integrated structure; The outer shell is arranged on the outer sideof the inner shell, and the outer shell and the inner shell are connected in a sleeve manner. The card slot is arranged in the inside of the shell, and the card slot and the shell are of an integratedstructure. The connecting plate is arranged on both sides of the shell, and the connecting plate and the shell are of an integrated structure. The fixing seat is arranged on the two sides of the bottom of the shell, and the fixing seat and the housing are connected with each other in a welding manner, The invention has the advantages of preventing the internal rust from affecting the use of the motor by improving the inner shell and the outer shell, avoiding deformation and cracking when accidentally crashing, prolonging the service life of the outer shell by double protection, and having good heat dissipation effect, thereby effectively solving the problems and shortcomings proposed in the background technology of the invention.

The invention provides a capacitive acceleration detector intermediate movable electrode, relating to a capacitive acceleration detector which is provided with a mass block, the mass block is evenly arranged with support beams; the support beams are connected with the inner sides of a frame; the mass block is provided with a metal plate and the support beams are straight. The invention has the advantages of simple manufacturing technology, low cost, good electric capacity consistency, low noise, stable performance, little wave distortion; the invention further has the advantages that in the manufacturing process, stress concentration can not easily be formed, and deformation and fracture cannot easily be caused, thus applicable to the capacitive acceleration detector.

The invention provides a preparation method of a low-dielectric hollow silicon dioxide microsphere, which comprises the following steps: taking polystyrene as a template of a hollow microsphere, adding a cationic comonomer acryloyloxyethyl trimethyl ammonium chloride (DAC), and introducing a positive charge group to a polymer chain to prepare a positively charged polystyrene sphere. The method does not need to add an activating agent, so that the surface of the sphere is positively charged to attract the silicon source to uniformly coat the template. Through the calcining method provided by the invention, a compact sphere structure can be obtained. According to the method for preparing the silicon dioxide microspheres through the template method, the prepared microspheres are high in pelletizing rate, compact, not prone to being broken and low in dielectric constant, and the modulus and heat resistance of a substrate are improved, so that the silicon dioxide microspheres are particularly suitable for the requirements of the copper-clad plate industry.

The invention relates to the technical field of hygienic products, and provides a sanitary napkin containing a middle convex core body and a preparation method thereof. The sanitary napkin comprises asanitary napkin body, and the sanitary napkin body comprises a liquid-permeable surface layer, a transmission layer, the middle convex core body and a leakage-proof bottom layer which are arranged ina laminated mode from top to bottom; the middle convex core body comprises a first absorption layer, a middle convex absorption layer and a second absorption layer from top to bottom, the middle convex absorption layer comprises a middle convex area and a non-middle convex area, and the mass ratio of fluff pulp absorbers in the middle convex area to fluff pulp absorbers in the non-middle convex area is larger than 3: 1. The fluff pulp absorbing body on the middle convex area is wrapped with absorbent paper, a gap is formed in the middle convex core body and penetrates through the middle convex core body, an outer ring flow guide groove and a straight strip flow guide groove are formed in the liquid-permeable surface layer, and permeation holes are formed in the liquid-permeable surface layer. The sanitary towel solves the problems that sanitary towels in the prior art are low in menstrual blood permeation and absorption speed, the surfaces of the sanitary towels are hard to keep dry,and side leakage and rear leakage are prone to occurring.

The invention discloses an electrode connecting device of a synclastic guide-pin type cylindrical polymer lithium battery. The electrode connecting device comprises a positive electrode part at a negative electrode end of the battery, a positive electrode part at a positive electrode end of the battery, and a connecting part for connecting the positive electrode part and the negative electrode part, wherein the negative electrode part comprises a negative electrode connecting sheet electrically connected with a negative electrode point of the battery, and one end of the negative electrode connecting sheet is connected with one end of the connecting part; the positive electrode part comprises an I-shaped tab shunt device, and two ends of the I-shaped device are provided with a negative column and a positive column for electric conduction respectively; a negative electrode electric lead for connecting the negative column to the other end of the connecting part is arranged in the tab shunt device; the positive column is connected and communicated with a positive electrode point of the battery through a positive electrode electric lead in the tab shunt device; the positive electrode electric lead and the negative electrode electric lead are insulated. Furthermore, the cylindrical polymer lithium battery adopting the synclastic guide-pin type electrode connecting device is adopted. The electrode connecting device disclosed by the invention is applicable to automation.

The invention discloses a flower-shaped milling cutter for wood door production. The flower-shaped milling cutter for wood door production comprises a cutter body, the cutter body is in a windmill-like shape, a central installation through hole is formed in the central position of the cutter body, a plurality of cutter heads are evenly arranged on the outer edge of the cutter body, and heat dissipation chip removal cavities are formed between adjacent cutter heads; cutter edges are arranged at the end parts of the cutter heads, the cutter edges include first vertical end part cutter edges, first horizontal cutter edges, sinking type sawtooth cutter edges, second horizontal cutter edges and second vertical end part cutter edges, wherein the first vertical end part cutter edges, the first horizontal cutter edges, the sinking type sawtooth cutter edges, and the second horizontal cutter edges and the second vertical end part cutter edges are sequentially arranged from left to right; the sinking type sawtooth cutter edges comprise a plurality of equidistantly arranged trapezoidal protruding cutter edges; the first horizontal cutter edges and the second horizontal cutter edges are on thesame horizontal plane; and the vertical distance from the upper bottom of each trapezoidal protruding cutter edge to a first horizontal cutter edge extension line is the same as the vertical distancefrom the lower bottom of each trapezoidal protruding cutter edge to the first horizontal cutter edge extension line. The flower-shaped milling cutter for the wood door production has the advantages of a simple structure, high working efficiency, high processing accuracy, convenient use, multiple linearity, ruggedness and the durability and a smooth and beautiful appearance.