38results about How to "Not strong" patented technology

The invention discloses an alkali and chlorine-free liquid setting accelerator based on industrial polyaluminium sulfate. The liquid setting accelerator comprises the following raw materials by weight: 35-55% of polyaluminium sulfate, 5-25% of magnesium sulfate, alcohol amine accounting for 15-30% of the polyaluminum sulfate, 0-5% of an inorganic acid, 0-5% of a stabilizer, and the balance water. The liquid setting accelerator provided by the invention can be used in the wet jetting industry of sprayed concrete, belongs to alkali and chlorine-free liquid setting accelerators, has a stable period of more than 6 months, a 28d compressive strength ratio of greater than 100%, and good adaptability to different cement. When the dosage is 4.5%, the technical requirements of the JC477-2005 ''setting accelerators for sprayed concrete'' can be satisfied. The liquid alkali-free setting accelerator has superior performance, and can be widely used in tunnels, bridges, first-aid repair and other projects.

The native cancellous bone volume of a vertebral body is altered to comprise a region of cancellous bone that has been compressed to form a compressed bone region that peripherally defines a cavity and another region of substantially uncompressed cancellous bone occupying at least a portion of the remaining native cancellous bone volume. A bone filling material occupies the cavity.

A tensioner for a traction drive includes a cylinder arranged in a housing at a distance to a housing wall to thereby define an interior space which contains hydraulic fluid. A piston is received in the cylinder for back-and-forth movement and bounds a pressure chamber containing hydraulic fluid. The piston has a cylinder-distal end which is operatively connected to a spring-biased tension roller supported on a traction member. Formed between the piston and the cylinder is a leakage gap, and a reservoir for hydraulic fluid is provided in an area of the leakage gap to prevent ingress of air into the pressure chamber, when the traction drive is at a rest.

A portable fluid heating tool capable of heating a flow of water under mains pressure to about 107 degrees Celsius and has a connection to a water supply via a hose. Water flows through an electrical heater within the tool, then to a thermally controlled pressure regulating valve (80) and then to the outlet nozzle. This valve (80) has a moveable member such as a diaphragm (83) sealing off a pressure chamber (88). Movement of the diaphragm (83) causes a valve (85) to open or at least partly close. When closed the valve (85) impedes, or restricts the flow of water from an inlet (86) to an outlet (87) through the valve. On the other side of the diaphragm a small quantity of water is trapped within the pressure chamber (88), so that as the valve (80) heats up, pressure within the pressure chamber (88) rises as the water turns to water vapour and the air within the chamber also expands. This increase in pressure within the pressure chamber (88) causes the diaphragm (83) to move slightly outwardly causing a pintle (84) to allow the ball valve (85) to open and allow maximum flow of the heated water through the valve (80) to the nozzle of the tool.

A shipping container has a lid locked using pressure, rather than friction. The container includes front and rear side panels and a lid. The lid has a positive locking tab for engaging with a slot in the front side panel. The tab has a greater length than the slot. An end of the tab and an edge of the lid form a notch therebetween. In an embodiment, a corrugated paperboard blank is folded to approximate the lid to the front side panel. The lid is folded along an angled score line, rotating the tab with respect to the slot so that an end of the tab engages the slot and the front panel at an end of the slot engages the notch. The lid is folded to rotate the tab in the opposite direction; the tab then engages with the slot, the end of the tab extending beyond the slot.

The invention discloses a suspended ceramsite-active carbon double-layer filtering tank and a method for applying the filtering tank in treating raw water. According to the invention, a water inlet tank and a water distribution tank of the suspended ceramsite-active carbon double-layer filtering tank are respectively positioned above and below a up-flow suspended ceramsite-active carbon double-layer filtering tank body on a same side; a water outlet tank is positioned above the side opposite to the water distribution tank; the water distribution tank communicates with the lower end of the up-flow suspended ceramsite-active carbon double-layer filtering tank body through a water distribution hole; a water distribution zone, a gas-flushing gas distribution pipe, a membrane pore aeration pipe, a lower filtering mesh, a suspended ceramsite bed, a filtering plate, an active carbon bed, and a water outlet zone are sequentially arranged in the filtering tank body from bottom to top. According to the invention, with a bio-membrane in the filtering material, ammonia nitrogen, organic substances and odor are biodegraded with dissolved oxygen in water; the suspended ceramsite under the filtering plate can retain most of turbidity under a micro-expanded state, and heavy metals such as iron, manganese, and thallium can be removed though catalytic oxidation on the surface of the ceramsite; the active carbon on the filtering plates adsorbs under a low-turbidity condition, such that adsorption capacity can be maintained, and an emergency effect can be developed. Therefore, deep purification can be realized upon water to be filtered.

The invention belongs to parts for cotton harvesters in the field of agricultural machinery, and provides a harvesting table of a cotton harvester, which comprises a harvesting table frame, a divider, a depth limiting wheel, an upper row of comb teeth, a lower row of comb teeth, a baffle, a cotton stirring roll, an anti-stirring roll, a conveying screw, a cotton lifting roll, a hydraulic drive device, a transmission chain and a tension wheel. The harvesting table of the cotton harvester is characterized in that the harvesting table is disposed in the front so that field clearing and transferring are achieved; the harvesting table is provided with the composite comb teeth so that the problem that cotton plants are high and dense is solved; the cotton lifting roll is provided with telescopic lifting teeth and two additional feed inlets, the screw is provided with two left-hand rotation blades and two right-hand rotation blades, cotton in the middle moves to two sides, cotton at two ends moves to the middle, and accordingly the cotton is fed into the two feed inlets simultaneously, and the problem of blockage of the feed inlets is solved; a screw scraper is a linear arc plate, and a trapezoidal gap is reserved between the screw scraper and the axial direction of each screw blade, so that the problem of cotton back-throwing is solved.

The invention discloses a nitrogen and phosphorus removal ecological permeable material and a preparation method thereof, and belongs to the fields of environmental functional materials and water purification. The ecological permeable material comprises a slow-release skeleton structure and permeable holes; the slow-release skeleton structure a skeleton is formed by pyrite particles of which the surfaces are coated with a mixture of a binding material and fiber reinforced ribs and aggregate particles of which the surfaces are coated with a mixture of the binding material and fiber reinforced ribs, the permeable holes are uniformly distributed in the slow-release skeleton structure, and the channels of the holes enable the water permeability coefficient of the ecological permeable materialto be not less than 10 mm/s. The nitrogen and phosphorus removal ecological permeable material has the characteristics of good water permeability, high molding degree, high specific surface area, highstrength, easiness in microbial biofilm formation and the like, can slowly release calcium ions and iron ions to remove phosphorus, realizes autotrophic nitrogen removal, and has a good purificationeffect on pollutants in water, especially total nitrogen and total phosphorus.

A process for preparation of a pawpaw skin cleaning article comprises first, getting fresh pawpaw to disintegrate, second, adding common salt which is stirred as the common salt is added till reaching saturation, and adding 2 to 30% metallic ion complex agent to homogenize, third, grinding through a colloidal mill and/or a homogenizer, and leading particle size of particles which are contained to reach 0.5 to 80um, fourth, adjusting pH value between 2.3 and 4.5, fifth, packing according to weights, and filling inert gas to remove oxygen, finally, evacuating and sealing. Extra juice can be pressed to make pawpaw face washing mud, and 1 to 6 times bath salt (NaCl) can be added to make pawpaw bath salt, tissue fibers of pawpaw are softer, which do not dissolve in water, and the pawpaw can not harm skin through fine grinding. Common salt has the functions of cleaning and inhibiting bacteria, common salt which is added in pawpaw juice can improve skin cleaning effect of the pawpaw juice. The pawpaw skin cleaning article has functions of skincare and whitening as removing dirt and cleaning skin, and skin cleaning is led to be more thoroughly, and the effect is better.

The invention discloses a heat treatment technique for obtaining a tristate tissue by carrying out two-phase-region high temperature deformation on a TC4-DT titanium alloy. The heat treatment technique is characterized by comprising the following steps: firstly carrying out two-phase region temperature and 1.1*10<-3>/s plastic stretching on TC4-DT, immediately taking the sample out after the sample is broken and quenching the sample with water; then carrying out triple heat treatment on a deformation part of the sample, wherein the triple heat treatment comprises three times of heating, three times of heat preservation, twice water quenching and once air cooling. By adopting the heat treatment technique disclosed by the invention, the tristate tissue can be obtained, and the tristate tissue has good comprehensive mechanical properties.

The invention discloses a rehabilitation wheelchair for upper limb traction. The wheelchair mainly comprises a car body and a traction device; the car body comprises a back cushion, a control panel and armrests, the back cushion is of a convex structure, protrusions are evenly distributed on the back cushion, the armrests are of an inner concave structure, the armrests are installed at the left and right ends of the car body through fixing rods, a long-strip-shaped fixing plate is arranged behind the car body, a long-strip-shaped sliding groove is formed in the upper end face of the long-strip-shaped fixing plate, a first movable plate and a second movable plate are arranged in the long-strip-shaped sliding groove, the lower parts of the front ends of the first movable plate and the secondmovable plate are each provided with a traction device, upper limb motion devices are arranged below the traction devices, the two upper limb motion devices are bilaterally symmetrically arranged below the two traction devices, and the control panel is located at the upper end faces of the armrests. In conclusion, the upper limb motion devices are driven by the traction devices to perform rehabilitation training on the upper limbs, and the wheelchair is simple in structure, comfortable to wear and convenient to adjust.

The invention provides a method for blending jute, comprising the following steps: 1. opening picking, which is to mix a jute fiber and other fibers; 2. carding the fibers in a carding room, with a relative humidity of between 75 and 80 percent; 3. drawing the fibers in a drawing room, with the relative humidity of between 75 and 80 percent; and 4. spinning the fibers in an air rotor spinning room by rotor spinning, with the relative humidity of between 85 and 90 percent. In the yarn spun by the method, the ratio by weight of the jute fiber to other fibers is between 10 to 90 and 90 to 10. The method can ensures high spinnability and high utilization rate for the jute fiber.

The invention discloses a preparation method for a high strength and high porosity in-situ growing magnesium borate whisker ceramic. The method includes the steps of: A, weighing the raw materials basic magnesium carbonate, boric acid, sodium pyrophosphate, polyvinyl alcohol and water; B, subjecting the raw materials weighed in step A to ball milling and mixing; C, drying the mixture prepared by step B under a 80DEG C temperature condition; D, conducting compression moulding on the material dried in step C; E, subjecting the compression moulded blank to drying treatment under a 110DEG C temperature condition; and F, sintering the blank dried in step E so as to obtain a finished product. On the basis of retaining in-situ synthesis preparation of magnesium borate whisker porous ceramic, themethod provided by the invention employs solid phase sintering technique, on the one hand solves the low porosity problem of magnesium borate whisker porous ceramic under a high strength condition, and on the other hand solves the problems of complex process and the like in preparation of magnesium borate whisker porous ceramic by freezing injection molding and sol-gel techniques.

The invention discloses a method for preparing a magnesium borate whisker ceramic film supporter with proper porosity and compressive strength. The method is characterized in that alkaline magnesium carbonate and boric acid are used as the main raw materials, MgF2 (magnesium fluoride) is used a sintering additive, PVA (polyvinyl alcohol) is used as an adhesive, and deionized water is used as a solvent. The method comprises the following steps of (1) weighing; (2) ball milling and mixing of material; (3) drying at the temperature of 80 DEG C; (4) pressing and forming; (5) drying at the temperature of 110 DEG C; (6) sintering. Compared with the prior art, the method has the advantages that on the basis of reserving the preparation of magnesium borate whisker porous ceramic via in-situ synthesis, the magnesium borate whisker porous ceramic with compressive strength of 11.35 to 14.51 MPa and porosity of 51.77 to 60.95% can be prepared; the problem of overlarge change in compressive strength and porosity of the magnesium borate whisker porous ceramic is solved, and the problems including complicated technology in preparation of the magnesium borate whisker porous ceramic by freezing mold injection method and sol-gel method are solved.

The invention discloses a hook plowing type manufacturing process of a band type commutator segment assembly. The hook plowing type manufacturing process of the band type commutator segment assembly is characterized in that the hook plowing type manufacturing process includes the steps of conducting warm extrusion treatment on copper wire rods to form the band type commutator segment assembly, conducting drawing treatment on the band type commutator segment assembly, sequentially conducting blanking, bending, edge rolling, inner hook plowing, and cold extrusion treatment for punching the shape of an inner hook on the drawn band type commutator segment assembly, and forming the commutator segment assembly which is provided with a forked tail and is even in depth of a hook groove of the inner hook and the width of the inner hook. According to the hook plowing type manufacturing process of the band type commutator segment assembly, the raw material utilization rate is high, materials can be saved by about 30%, mechanism strength of the commutator segment assembly is ensured due to the fact that the forked tail on the commutator segment assembly is free of deformation and strength damage, the outer circular degree of a commutator product is good due to the fact that the depth of the hook groove of the inner hook and the width of the inner hook are even, outer circle machining is not needed, adhesion strength of the commutator segment assembly and commutator die plastic can be further increased, and the hook plowing type manufacturing process is not limited by the size of a die and suitable for commutators of various specifications.

The invention relates to a high-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material and a preparation method thereof, and the preparation method comprises the following steps: firstly, oxidizing expandable graphite to obtain expanded graphene oxide EGO, and functionalizing the EGO to obtain expanded ethyl carbamate-silicon dioxide functionalized graphene oxide U-S@EGO as a high-temperature reinforcing agent; then carrying out phosphorylation modificationon corn starch to obtain phosphorylated corn starch CSP, using the CSP to carry out surface modification on wheat bran fibers, adding a flame-retardant phosphorus element, preparing a flame-retardant carbon source at the same time, and obtaining phosphorylated corn starch modified wheat bran fiber CSP@WBF; and synthesizing the high-temperature reinforcing agentwith a flame-retardant filler according to a specific formula to obtain the high-strength high-temperature-resistant MDI-based slow-rebound polyurethane sponge material.the high-temperature . On the basis of not changing the structure and the mechanical property of the original slow-rebound polyurethane sponge, the physical property stability of the slow-rebound polyurethane sponge at high temperature is greatly enhanced, and the fire resistance can be self-extinguished when the slow-rebound polyurethane sponge is away from fire.

The invention discloses a portable business card scanning system comprising a mobile phone shell, a micro motor, a micro controller, an analog-to-digital converter, a Bluetooth sending device and a battery, wherein a collection device main body is arranged on the back surface for clamping a mobile phone of the mobile phone shell, the collection device main body is of a cuboid structure, a gap is formed in the middle of the collection device main body, multiple groups of transmission wheels are arranged on upper and lower surfaces of the gap in sequence, and the transmission wheels are connected with the micro motor; an upper side hollow cavity is formed in the upper side of the gap, and a lower side hollow cavity is formed in the lower side of the gap; and three light passages are arrangedin the upper side hollow cavity and on the lower side of a corresponding position of a light source of the mobile phone, the three light passages pass through the upper side hollow cavity, the upperends of the three light passages are centralized together, and the three light passages have included angles. The electronic collection device can completely record business cards, achieve 100% accuracy, and realize the collection function based on the mobile phone shell. Nowadays, almost all the mobile phones have the mobile phone shells, and the collection devices are embedded in the mobile phone shells, therefore the portability of the collection devices can be met.

The invention relates to a removal method for a photoetching coating on a carbon-containing porous material substrate. In the invention, organic solvent removal and low-temperature oxidizing removal are combined, wherein the photoetching coating, which is easy to dissolve in the organic solvent, on the surface and in deep pores of the substrate is removed firstly by an organic solvent, and then the residual photoetching coating in the deep pores is removed through the low-temperature oxidizing process. The method effectively overcomes the defects of incomplete removal with the organic solvent and low removal speed and low capability of the low-temperature oxidizing process, increases removal capability on the photoetching coating, can completely remove the photoetching coating, and ensures structural performance and electrical performance of porous structures in the carbon-containing porous material substrate, thereby providing convenience for subsequent processes.