389results about How to "Improve clipping" patented technology

A post-tensioned precast segmental concrete tower has a stack of annular segments with uniform cross-sections which varies over the tower height. The transition between tower segments occurs in stages and is achieved using annular members or segments which support and anchor post-tensioning tendons that transfer loads passing through the tower as a result of a change in tower geometry. The tower segments are match cast against one another in fabrication to create tight matching opposing surfaces when placed into the tower and to create tight joints. The match casting eliminates the need for grout between precast segments, resulting in a faster tower erection time and high durability of the joints. All annular segments have horizontal joints and no vertical joints. The tower geometry simplifies the formwork system used to precast the segments, and the post-tensioning tendons tie all segments together and to the foundation.

A pressure sensitive adhesive is described comprising an acrylate copolymer, silica nanoparticles and crosslinked by a polyfunctional aziridine crosslinking agent.

Submerged gas diffuser assemblies configured to aerate liquid suspensions in reservoirs or deep shafts with enhanced aeration contact patterns and adjustable aeration rates. Aeration contact patterns and rates are varied by the adjusting the spatial configuration of gas permeable membranes, altering the fluid flow patterns around the membranes, manipulating trans-membrane pressures across membranes, varying the sequence of aeration of liquid within the fluid flow patterns, expanding the membrane surface area, and / or by selectively occluding certain portions of membrane surface area of the membrane assemblies. The membrane assemblies are designed to prevent, control, or mitigate membrane fouling and hydro lockup.

The embodiment of the invention provides a video material processing method and device and a storage medium. The video material processing method comprises the steps that at least one to-be-edited video matched with a preset video editing template is determined in at least one video material according to the preset video editing template; and the at least one to-be-edited video is processed according to a preset video editing template to obtain a composite video. According to the preset video editing template, the at least one to-be-edited video matched with the preset video editing template is determined in the at least one video material, so that the style of the to-be-edited video is matched with the style of the preset video editing template, and the synthesized video obtained by processing is better in editing effect and higher in efficiency.

A roof assembly in which overlapping edges of adjacent panel members are joinable in an assembled mode to provide a seam having resistance to sidelap shear, the roof assembly comprising panels having a female sidelap along one edge and a male sidelap along the opposite edge, the female sidelap having a male insertion cavity and a leg member with a female retaining groove. The male sidelap, engageable in the male insertion cavity of an adjacent panel, has a tang lockingly disposed in the female retaining groove in folded tight adjacency to form a standing seam between panels. The panels are interconnected via backer plate fasteners to increase resistance to side slipping under wind uplift.

This invention relates to a structural cementitious panel (SCP) panel able to resist lateral forces imposed by high wind and earthquake loads in regions where they are required by building codes. These panels may be used for shear walls, flooring or roofing or other locations where shear panels are used in residential or commercial construction. The panels employ one or more layers of a continuous phase resulting from the curing of an aqueous mixture of inorganic binder reinforced with glass fibers and containing lightweight filler particles. One or more reinforcement members, such as mesh or plate sheets, are bonded to at least one surface of the panel to provide a completed panel that can breathe and has weather resistant characteristics to be capable of sustaining exposure to the elements during construction, without damage.

Improved adhesives are provided through the use of styrenic radial block copolymers, containing at lest 40 wt % diblock copolymers, the adhesives have improved adhesive properties and a reduced elastic behaviour under die-cutting conditions. Compared to conventional linear block copolymers of similar molecular weight, radial copolymers offer higher holding power and lower melt viscosity for the adhesive. They therefore contribute to an improved balance between processability and end-use properties.

A post-tensioned precast segmental concrete tower has a stack of annular segments with uniform cross-sections which varies over the tower height. The transition between tower segments occurs in stages and is achieved using annular members or segments which support and anchor post-tensioning tendons that transfer loads passing through the tower as a result of a change in tower geometry. The tower segments are match cast against one another in fabrication to create tight matching opposing surfaces when placed into the tower and to create tight joints. The match casting eliminates the need for grout between precast segments, resulting in a faster tower erection time and high durability of the joints. All annular segments have horizontal joints and no vertical joints. The tower geometry simplifies the formwork system used to precast the segments, and the post-tensioning tendons tie all segments together and to the foundation.

The invention discloses a method and a device for polishing a small-bore optical element, and belongs to the technical field of ultraprecise optical polishing. A throttling block of which the shape is matched with that of a surface to be machined and which is provided with a slot way is fixed on the upper part of the surface to be machined of a workpiece; the workpiece rotates around the own rotating shaft; a flexibly cyclic polishing belt is formed on the slot way by using fine abrasive particle fluid and machines the surface of the workpiece. By using pressure difference and a mode of fluid suction, the fluidity and sliding friction property of the fine abrasive particle fluid is enhanced; by adoption of ultrasonic vibration of an axisymmetric rotating curved-surface workpiece, the impact effect and cutting effect of fine abrasive particles on the workpiece are enhanced, so that the material removal rate is enhanced, the surface with high quality is obtained efficiently, and surface scatheless trace removal is realized. The method and the device are applied to ultraprecise polishing of curved surfaces of various rotationally-symmetrical optical elements and are high in practical value in the aspect of automatic processing.

This invention relates to a structural cementitious panel (SCP) panel able to resist lateral forces imposed by high wind and earthquake loads in regions where they are required by building codes. These panels may be used for shear walls, flooring or roofing or other locations where shear panels are used in residential or commercial construction. The panels employ one or more layers of a continuous phase resulting from the curing of an aqueous mixture of inorganic binder reinforced with glass fibers and containing lightweight filler particles. One or more reinforcement members, such as mesh or plate sheets, are bonded to at least one surface of the panel to provide a completed panel that can breathe and has weather resistant characteristics to be capable of sustaining exposure to the elements during construction, without damage.

Improved adhesives are provided through the use of styrenic radial block copolymers, containing at least 40 wt % diblock copolymers, the adhesives have improved adhesive properties and a reduced elastic behavior under die-cutting conditions. Compared to conventional linear block copolymers of similar molecular weight, radial copolymers offer higher holding power and lower melt viscosity for the adhesive. They therefore contribute to an improved balance between processability and end-use properties.

An adhesive composition comprising an emulsion polymer which comprises a (meth)acrylate copolymer, and acicular silica particles, crosslinked by a polyfunctional aziridine crosslinking agent is described.

The invention belongs to the technical field of material engineering and relates to a connection technique for metals, in particular to a welding and adhesive jointing combined connection technique for metals, which comprises: applying adhesive for structural curing on the joint surfaces of materials to be welded; jointing the materials; and welding. The technique is characterized in that: an adhesive layer which is 0.02 to 1 millimeter thick is uniformly applied between the jointing surfaces of the materials to be connected; after joining, through holes with an aperture of 3 to 10 millimeters are formed on a jointed part at 15 to 50 millimeter intervals along a joint, and performing double-sided filler wire spot welding at the holed part with an arc weld; and heating the jointed parts between which a glue layer is applied to 50 to 500 DEG C before welding and after welding, and keeping the temperature for 10 to 180 minutes. The method can increase the strengths of the welded spots, avoid surface collapse caused by other adhesive bonding, improve the bearing load, fatigue strength and shearing performance of difficult-to-weld welded structure made of one kind of metal and different kinds of metals, and meet actual engineering needs.

The invention discloses a high-frequency minimally invasive surgery instrument for vascular melt closed cutting, which comprises a claw beam assembly with the diameter of 10-12mm / 5-8mm and a control grip assembly, wherein a fast plugging mechanism is arranged between the claw beam assembly and the control grip assembly; the claw beam assembly can be exchanged; the claw beam assembly comprises clamping forceps, a fork frame, a claw beam, a lock drum / conductive ring, a jaw steering thumb wheel, a clamping opening / closing drive mechanism, a cutter drive mechanism and a disposable control mechanism; and the control grip assembly comprises a grip housing, a clamping forceps control mechanism, a cutter control mechanism, a current / signal switch and conduction device, a claw beam assembly exchange / lock mechanism, and a cutting safety mechanism. The high-frequency minimally invasive surgery instrument has the beneficial effects that the disposable using method for exchanging the claw beam is adopted; the purposes of reducing the surgery cost and preventing a patient from being threatened by cross infection are achieved, and the high-frequency minimally invasive surgery instrument is positively significant for the development of the minimally invasive medical career in China.

The invention discloses a low-floating-fiber high- glossiness glass fiber reinforced polyamide composition and a preparation method thereof. The composition comprises 30 to 85 parts by weight of polyamide resin, 15 to 60 parts by weight of glass fiber, 0.1 to 10 parts by weight of nanometer filler and a rheological regulator in an amount which is 0.08 to 5.0 percent of the weight of the glass fiber, wherein the nanometer filler and the rheological regulator are limited, particularly the structure of modified hyperbranched polymer in the rheological regulator is specifically limited. Due to adoption of the rheological regulator, the retention distribution range of melt in processing equipment can be reduced to a great degree and the product appearance defect caused by the part which exceedsthe ideal retention time limit value is reduce; in particular, the nanometer filler which integrates the special structure and the effect has remarkable beneficial effect of improving the appearanceof the glass fiber reinforced polyamide composition; the obtained polyamide composition has high glossiness and little floating fiber, and still can maintain excellent physical and mechanical properties while embodying good product appearance.

The invention discloses a wedge-shaped draper-type press filter which consists essentially of a chassis, a pressing area, a driving device, a feeding device, a scrapper assembly, a deviation-rectifying device, a rinsing device and a water receiving device. The structure of the wedge-shaped draper-type press filter is characterized in that the pressing area is a wedge-shaped pressing area with an included angle more than zero degree but less than 15 degrees between an upper filter strip and a lower filter strip; the wedge-shaped pressing area is divided into an upper press area and a lower press area; respective tension band and filter strip of the upper press area and the lower press area are stacked and wrapped outside respective press roll in parallel; the tension band is stuck to the press roll and the filter strip is firmly stuck outside the tension band; the press rolls of two press areas are arranged in a counter pressure way. The draper-type press filter of the invention adopts a single wedge-shaped press area, changes press dehydration technique of the prior art that adopts a plurality of press rolls to enwind and operate in snaking way, realizes that the press roll operates press dehydration in a counter pressure and liner way, greatly reduces the abrasion of the filter strips caused by tension, effectively prolongs the service life of the filter strips and can reduce operation energy consumption of the press filter.

The invention discloses a whole-process autotrophic nitrogen removal method. The method mainly comprises the following steps: 1) inoculating anammox sludge into a reactor; 2) introducing nitrogen into the wastewater so as to reduce the DO (Dissolved Oxygen) concentration of wastewater to 0mg / L (milligram per liter) by filling nitrogen into the wastewater, and regulating the pH value of a water inflow barrel to reach 7 to 8; 3) gradually increasing the water inflow load by increasing the total nitrogen concentration of the wastewater and reducing the hydraulic retention time; 4) gradually increasing the DO concentration in the wastewater after a reaction is stable, thereby culturing bacteria capable of consuming oxygen in the reactor; 5) forming the oxygen-containing bacteria on the outer layer of the anammox sludge after performing the culturing acclimatization for half a month; 6) inoculating nitrosobacteria into the reactor and properly lowering the nitrate nitrogen concentration in the inflowing water while performing aeration to the reactor and controlling aeration quantity at the same time, thereby partially converting ammonia nitrogen entering the reactor into the nitrate nitrogen, i.e., the concentration (mg / L) ratio of the ammonia nitrogen to the nitrate nitrogen is 1:1 or so; regulating the pH value in the reactor to reach 7.5 to 7.7 by using a pH controller; 7) gradually increasing the water inflow load, thereby removing the nitrogen stably. The invention further discloses a device for realizing the whole-process autotrophic nitrogen removal method.

A magnetic clamp (10) for use in clamping metal formwork in precast concrete manufacture includes a housing (12). A magnet (14) is displaceably arranged within the housing (12). A displacement mechanism (18) is displaceably arranged on the housing (12) to displace the magnet (14) relative to the housing (12). A force amplification mechanism (24) is connected to the magnet (14) and at least a portion of the force amplification mechanism (24) is interposed between the displacement mechanism (18) and the magnet (14).

The invention relates to a mixer for a bypass turbomachine, the mixer comprising a member having a sinusoidal portion at its end defining inner lobes and outer lobes, each outer lobe comprising a pair of plane radial walls spaced apart from each other in the circumferential direction and interconnected by an outer dome, each inner lobe comprising a pair of plane radial walls spaced apart from each other in the circumferential direction and connected together by an inner dome, the walls of the outer lobes being disposed to extend the walls of the inner lobes radially, the radial walls of a given outer lobe extending radially in mutually parallel directions, with these walls, when extended geometrically, defining a zone from which the axis of symmetry of the cylindrical member is excluded.

The invention relates to a C / C-MC composite of a mixed matrix thermal structure and a preparation method thereof, in particular to a novel high-performance thermal structure composite for bearing and a preparation method thereof, and belongs to the technical field of carbon / carbon composite manufacturing. 45-degree fibers are introduced into the plane direction of carbon cloth laminated sewn structure textile, and on the basis of guaranteeing the stretching, compressing, bending and other performance of the material, the shearing performance of the material is improved, and the bearing performance of the material under complex loads is enhanced. By means of matching design of a complex matrix and introduction of the control technology and the fiber interface protection technology, the oxidation resistance of the material is improved, and integration of the bearing strength and heat-proof function of the material is achieved.

An adhesive composition comprising an emulsion polymer which comprises a (meth)acrylate copolymer and silica nanoparticles is described. The addition of the nanoparticles results in a significant increase in the overlap shear properties.

The present invention discloses one kind of paddle type mixing machine in the field of mixing machinery. There are machine body; stirring barrel set on the machine body; rotor comprising rotating shaft inside the stirring barrel, brace bar on the shaft and paddles fixed in the fast flow area; and characterized transition area stirring part set on the shaft and in the slow flow area. The transition area stirring part may be installed directly on the rotating shaft, on the middle section of the brace bar, or on the support column on the rotating shaft. The present invention has novel structure, simple manufacture process and low cost, and is suitable for both single shaft paddle mixing machine and double shaft paddle mixing machine.

The invention relates to a hygiene-grade rotating-anchor-type and fixing-type combined blade stirrer. The hygiene-grade rotating-anchor-type and fixing-type combined blade stirrer comprises a motor, a speed reducer, a transmission shaft, cover-type nuts, fixing bases, end sockets, a coupler, a rotating-anchor-type stirrer body, fixing-type stirrer bodies, rotating stirrer blades, fixing stirrer blades, scratch boards, device flanges and a tank. The fixing-type stirrer bodies are installed at the top ends of the end sockets on the two sides of a stirring shaft of the rotating-anchor-type stirrer body, the scratch boards are installed on the outer sides of supports on the two sides of the rotating-anchor-type stirrer body, and the rotating stirrer blades and the fixing stirrer blades are correspondingly and alternately installed on the stirring shaft and fixing shafts. The hygiene-grade rotating-anchor-type and fixing-type combined blade stirrer has the advantages that the angle positions of all the blades can be installed according to the requirement of technology operation to meet the requirements of the different working conditions; the stirring range of the stirrer is wide and almost free of dead corners, and full stirring can be guaranteed; when materials with different production technologies are stirred, the device is flexible in assembling, reliable in fixing and quite convenient to disassemble, assemble, replace, wash and maintain.

A beveled block pallet is disclosed, the pallet being stringers supporting blocks, the blocks supporting stringers. The blocks are tapered to form a trapezoid shape to permit more strength with less weight.

The invention discloses an integrated autotrophic synchronous biological denitrification granulation device which comprises an outer barrel arranged on a support.An inner barrel is arranged inside the outer barrel, both a water incoming pipe and an air incoming pipe penetrate the undersurface to extend into the inner barrel, the end of the air incoming pipe in the inner barrel is connected with an aeration head, the top of the outer barrel is connected with a sludge backflow slope, a sedimentation barrel is connected above the sludge backflow slope, an overflow weir is arranged at the upper edge of the sedimentation barrel, a water collection tank is arranged outside the sedimentation barrel, an isolation barrel is arranged at the top of the inner barrel in a sleeved manner, a sludge backflow gap is formed between the isolation barrel and the sludge backflow slope, the top of the isolation barrel is higher than the sedimentation barrel, a second gas-water separation annular baffle is connected on the inner wall of the sedimentation barrel, and a first gas-water separation annular baffle is arranged at a position above the second gas-water separation annular baffle and on the outer wall of the isolation barrel.A circulating device does not need to be added externally, so that energy conservation is realized; granular sludge can be cultured under action of self-circulation, and setting performance is good.

The invention relates to an integrated rotary cavitating jet nozzle comprising a cylindrical inlet segment, a cylindrical resonant cavity, a cylindrical pore and a cylindrical outlet segment. The cylindrical outlet segment is provided with a plurality of intake tubes; bores of the intake tubes are tangent to a bore of the cylindrical outlet segment. The inner diameter of the intake tubes is half a difference between the inner diameter of the cylindrical outlet segment and the diameter of the cylindrical pore. The section of the bore of each intake tube is round, square, or in any special shape. The intake tubes can be axially distributed in multiple rows at the cylindrical outlet segment of a nozzle body. Compressed air is led into the intake tubes, the compressed air led in from the intake tubes enters in the tangent direction, air swirls surrounding a water jet are formed in the cylindrical outlet segment and drive the water jet to turn into a rotating vortex in the cylindrical outlet segment, and cavitating effect is further enhanced; meanwhile, cavitating bubbles are concentrated to the center of the water jet, energy of the cavitating water jet is more concentrated, the shear action of the jet upon a target is enhanced, and eroding capacity of the cavitating jet is greatly improved accordingly.

The invention discloses a preparation method of a diesel oil pour point depressant. The method includes the following steps of firstly, weighing high alcohols, catalyst, polymerization inhibitor and solvent to be sequentially added into a reactor and stirred till solids are completely dissolved, then adding methacrylic acid, and conducting reduced pressure distillation, alkali washing and water washing on the product after reaction ends to obtain methylacrylic acid high-carbon ester; secondly, weighing methylacrylic acid high-carbon ester, maleic anhydride, initiator and solvent to be evenly mixed, conducting reacting at a certain reaction temperature under the protection of nitrogen, adding aromatic amine and catalyst after reaction, changing the reaction temperature for reaction for a certain period of time, conducting reduced pressure distillation on the reaction liquid after reaction ends, then adding an excessive amount of methyl alcohol to generate white precipitates, removing supernate, and conducting washing and vacuum drying on the obtained white precipitates through methyl alcohol to obtain the diesel oil pour point depressant. The prepared diesel oil pour point depressant can remarkably reduce the condensation point of diesel oil and improve the low-temperature flowability of diesel oil; the raw materials are easy to obtain, the synthesis method is simple, and the additive dosage is small.

A rotating razor blade comprises a blade body (1) and an inner shaver ring on the blade body. The inner shaver ring comprises at least one inner-ring shaver (2). The inner-ring shaver is perpendicular to the radial direction of the blade body and the head of the inner-ring shaver inclines upward. The blade body has a groove (11) formed after the inner-ring shaver is disposed. The inner-ring shaver is disposed with a strengthening structure for enhancing the connection strength of the inner-ring shaver. A stress releasing structure for preventing stress concentration on the blade body is disposed inside the groove. The razor blade has a simple structure and can be easily manufactured. The strength of the blade and the shaver is increased, so the shearing force is reduced, and the sharpness is enhanced. A razor head disposed with the above blade ensures that hair enters easily and shaving is thorough, and achieves a better effect of fitting the face during shaving to prevent skin injuries.

The invention relates to a stirring device which comprises two rotating shafts, wherein a plurality of same stirring discs are axially fixed to the rotating shaft; each stirring disc is composed of aplurality of same radially arranged stirring rods and a fixed rod connected to two adjacent stirring rods; each stirring rod comprises supporting rods arranged radially and two or more stirring bladesarranged on the supporting rods vertically, wherein one of the stirring blades is located at the tail end of the supporting rod, and the stirring discs on the two rotating shafts are arranged in a staggered manner. The invention also provides a horizontal double-shaft self-cleaning reactor based on the stirring device. Compared with a conventional horizontal double-shaft reactor, the horizontal double-shaft self-cleaning reactor is simple in structure, has a bigger reaction space, materials are sheared and stretched in a kettle body, so that the reactor is suitable for fluids with different viscosities; the standing time is controllable; compared with the conventional horizontal double-shaft reactor, full reaction regions in the kettle body scratch one another, so that the self-cleaning effect is good. The reaction energy consumption is low, and the mixing efficiency is high.

The invention discloses a feed type high-effect grape branch shearing machine. The feed type high-effect grape branch shearing machine comprises a bearing support, a first telescopic device, a transversely-moving supporting arm, a second telescopic device, a swing frame, a vertical movable support, a third telescopic device, a torque output device, a feeder, a first crank, a first connecting rod, a vertical fixed blade and a vertical movable blade. The feed type high-effect grape branch shearing machine is more reasonable in structure and higher in shearing effect, and the grape branch shearing rate is greatly increased.