429results about How to "High shear force" patented technology

Readily-fibrillable fibers of PVA polymer, having good chemical resistance, hydrophilicity, weather resistance and water resistance have a flattened cross-sectional profile and have a mean thickness D (μm) that satisfies the following formula (1):

0.4≦D≦5  (1)

• • wherein D=S/L; S indicates the cross-section area (μm²) of the fibers; and L indicates the length (μm) of the major side of the cross section of the fibers. The fibers can be used for making nonwoven fabrics.

The invention relates to an undercarriage test load loading device. A through hole for installing an FZ loading connector and an FX loading hole for installing an FX loading connector are formed in an upper part of a loading fake wheel; one end of an FZ loading lug is connected to the FZ loading connector, and the other end of the FZ loading lug is connected to one end of a hydraulic servo actuator cylinder; the other end of the hydraulic servo actuator cylinder is arranged on a vertical column; a shaft sleeve hole for arranging the loading fake wheel on a wheel shaft of an undercarriage and a PX loading hole for installing a PX loading lug are formed in a lower part of the loading fake wheel; a PY loading hole for installing a PY loading lug is formed in the bottom of the loading fake wheel; a chain is connected to the PY loading lug; and force sensors are arranged on the upper parts of the hydraulic servo actuator cylinder and the chain. The loading fake wheel replaces an airplane wheel so as to satisfy the loading demand of a test, a connection between the loading fake wheel and the undercarriage is consistent with a connection between a real airplane wheel and the undercarriage, the transmission path of the load is constant, the accuracy of a test result will not be affected, and the loading demands of different testes in different directions can be met.

The invention discloses an electromagnetism and magnetorheological fluid mixed shock absorber which can realize active control, is low in energy consumption and can recover energy. The electromagnetism and magnetorheological fluid mixed shock absorber comprises an upper shell and a lower shell which are connected together; an intermediate connecting plate is arranged at the connecting part of the two shells; a piston rod penetrates into the two shells and is connected with a piston body after penetrating through the intermediate connecting plate; the upper shell and the piston body are internally provided with an electromagnetic device respectively; the two electromagnetic devices are both connected with a control unit, and the control unit is connected with a signal end of a sensor; the lower shell at the lower part of the piston body is internally provided with a moving piston; a magnetorheological fluid cavity is respectively arranged between the piston shell of the piston body and the intermediate connecting plate and between the piston shell of the piston body and the moving piston, and the two magnetorheological fluid cavities are communicated by a communicating structure of the piston body; and a nitrogen cavity is arranged between the moving piston and the lower shell. The electromagnetism and magnetorheological fluid mixed shock absorber combines the advantages and disadvantages of the magnetorheological fluid semi-active control and the magnetism active control of the shock absorber, and has the advantages of being good in shock absorbing effect, low in energy consumption and recoverable in energy.

The heat insulation material consists of cement 50-55 wt%, granular polystyrene 10-15 wt%, flyash 20-25 wt%, light calcium carbonate 1-5 wt%, heavy calcium carbonate 5-10 wt%, flyash 10-20 wt%, cellulose fiber 0.1-0.5 wt%, methyl cellkulose 0.1-0.3 wt%, amylase 0.1-0.2 wt%, foaming agent 0.1-0.2 wt% and air entraining agent 0-0.2 wt%. The present invention is a kind of green furnishing and decorating material and is suitable for use as heat insulating material outside the outer wall and roof.

The invention discloses a method for continuously preparing white carbon black and ammonium fluoride by carrying out fluosilicic acid ammoniation, which relates to a chemical production method, in particular to a method for preparing the white carbon black and the ammonium fluoride. The method comprises the following steps: (a) at a temperature between minus 5 and 30 DEG C, starting a stirrer and an air compressor, blowing compressed air into an outlet pipe of a reactor by the air compressor and adding fluosilicic acid and ammonia into the reactor simultaneously; (b) when the fluosilicic acid and the ammonia are added to the position of an overflow pipe in the reactor, opening an emptying valve to continuously feed and discharge materials and controlling a PH value of the reaction, wherein the period of the continuous reaction is 24 hours; (c) in the reaction process, filtering the materials discharged by the step (b) to obtain a white carbon black filter cake and filtrate of ammonium fluoride, and washing and drying the white carbon black filter cake to obtain a white carbon black finished product, wherein the filtrate is ammonium fluoride solution; and (d) after performing a reaction for 24 hours in the reactor, emptying the materials, cleaning the reactor to be used next time and producing the white carbon black finished product by using the materials according to the step (c), wherein the ammoniation yield of the process can reach 99.99 percent. The method of the invention effectively overcomes the defects of the existing intermittent technology and has the advantages of continuous, stable and simple process and long operation period.

The invention discloses a processor for domestic garbage, which comprises a grinding device and a drying device, wherein the grinding device comprises a first shell, a grinding mechanism and a driving mechanism; the first shell is provided with a first feeding port and a first discharging port; the grinding mechanism is arranged in the shell between the first feeding port and the first discharging port; the grinding device further comprises a first baffle mechanism and a first liquid outlet; the first baffle mechanism is arranged at the first discharging port and is used for opening and closing the first discharging port; the first liquid outlet is arranged on the lower part of a side wall of the first shell; the grinding mechanism comprises 2-4 sets of rollers which are uprightly arranged; each set of rollers comprises two laterally arranged rollers with an clearance leaved therebetween; the clearance of each set of rollers is gradually diminished from top to bottom; raised teeth arearranged on circumference of each roller at intervals; and the driving mechanism is connected to each roller and is used for driving the two rollers of each set of rollers to rotate along opposite directions. The processor for domestic garbage provided by the invention can be used for processing hard and big garbage. The garbage after being processed can be regenerated and reused.

The invention discloses a polypropylene composite material and a preparation method thereof, wherein the material includes, by weight, (a) 40-85% of polypropylene resin, (b) 5-30% of a toughening agent, (c) 5-40% of a filling material, (d) 0.1-1% of a composite antioxidant, and (e) 0.1-1% of a processing aid. The preparation method includes the steps of (1) weighing the material according to the weight ratio of 40-85% of the polypropylene resin, 5-30% of the toughening agent, 5-40% of the inorganic material, 0.1-1% of the composite antioxidant, and 0.1-1% of the processing aid; (2) mixing the raw materials in a high-speed mixer uniformly; and (3) performing extrusion in a double-screw extruder to obtain a blended substance. The polypropylene composite material is excellent in anti-impact performance, is high in toughness at normal and low temperatures, is excellent in notch impact strength and is excellent in heat resistance and rigidity.

A seven-level adjustable reciprocating type electrorheological fluid damper mainly comprises a positive-pole conducting wire, a negative-pole conducting wire, a positive-pole piston cylinder cover, a negative-pole piston cylinder cover, positive-pole conducting rubber, negative-pole conducting rubber, a piston rod, an insulating piston cylinder, a positive pole, a negative pole, a backflow control path, a small piston, a middle piston, a large piston and electrorheological fluid. The positive-pole conducting rubber and the negative-pole conducting rubber replace sealing materials and play a role in sealing and conducting. Installation forms of the small piston, the middle piston and the large piston are determined by borne damping force, wherein when the damping force is large, stress is not clear, and movement speed is high, the dual-piston or three-piston form is adopted; when the damping force is small, the single-piston form is adopted. The backflow control path replaces a throttling control valve, no external electric field exists, the electrorheological fluid bears the force and flows between the positive pole and the negative pole through the backflow control path, and the seven-level adjustable reciprocating type electrorheological fluid damper is a hydraulic damper; when an external electric field is applied and shearing efficiency is high, apparent viscosity of the electrorheological fluid of the backflow control path changes, the section area of the backflow control path becomes smaller, the backflow control path is even blocked completely, and the electrorheological fluid effectively controls an engineering system by proving shearing force and extruding force.

The invention discloses a round steel cutter, which comprises a fixed cutter, a movable cutter and a main oil cylinder, wherein the fixed cutter is fixed at a shearing port of the cutter body; the movable cutter is arranged on a movable cutter seat; the movable cutter seat is connected with a piston rod of the main oil cylinder; and a pressing device and a supporting device for clamping round steels during shearing are arranged at a feeding hole and a discharge hole of the cutter body. Because hydraulic pressure is used as shearing power, the shearing force is large, the motion is stable, the noise is low, the shearing process does not produce metal scraps and sparks, and the processing safety is improved. Moreover, the round steel cutter effectively solves the shock produced during shearing the round steels, improves the flatness of round steel sections, improves the processing efficiency, and provides convenience for subsequent processing.

The invention discloses a special steel formwork for a combined stairway of a high-rise building and an assembly method of the special steel formwork. The special steel formwork comprises two mutually parallel stairway beams, horizontal poles are arranged between the stairway beams, two ends of each horizontal pole are perpendicularly connected with the stairway beams respectively, a stepping vertical pole is perpendicularly arranged on the side wall of each stairway beam and fixed to the stairway beam, horizontal poles are placed at two ends and the center of each stairway beam respectively, angle steel switchover pieces are attached to the side walls and the bottoms of the horizontal poles and cling to the stairway beams, U-shaped fasteners penetrate the angle steel switchover pieces and the stairway beams to serve as fixing parts, the stepping vertical poles are perpendicularly fixed outside the stairway beams, a horizontal positioning mechanism is arranged between each stepping vertical pole and the corresponding stairway beam, the bottom of each stepping vertical pole is connected with a baffle, angle steel switchover pieces are arranged on the baffles, and rib plates and fixing pipes are welded on the baffles and used for enhancing the strength of the baffles and fixing lateral timber formworks. By the aid of an assembly structure, deformation of concrete can be avoided after forming, and the quality of the stairway is ensured.

A distribution machine used in a concrete component production system comprises a machine frame, a distribution box arranged on the machine frame, a feeding hopper communicated with the distribution box, a storage tank communicated with the feeding hopper, a weighing mechanism and a feeding mechanism, wherein the weighing mechanism and the feeding mechanism are arranged on the machine frame. The feeding mechanism comprises a first drive device, a wheel shaft, star wheels and partition sleeves, wherein the wheel shaft is arranged in the distribution box and connected with the first drive device, the star wheels are arranged on the wheel shaft at intervals, and the partition sleeves are arranged between adjacent star wheels, a discharging opening is formed in the position, corresponding to the star wheels, at the bottom of the distribution box, a discharging gate plate is arranged on the discharging opening, and the discharging gate plate is matched with the distribution box in a sliding mode. The distribution machine has the advantages that distribution is uniform and stable, feed amount of concrete can be conveniently and quickly controlled according to actual needs, distribution efficiency is improved, precise measuring of the material quantity is achieved, waste of raw materials is reduced, and quality of products is well guaranteed.

The invention discloses a domestic vertical type noodle maker which comprises a base, a stirring cup, a stirring rod, a dough extrusion cylinder, a screw rod, a mold head and a control unit, wherein the base is provided with motors; the stirring cup is connected with the base; the stirring rod comprises a rod body as well as upper stirring teeth and lower stirring teeth which are arranged on the rod body; a dough inlet is formed in the communicating part of the stirring cup and the dough extrusion cylinder; a dough cutting rod is arranged on the inner wall of the stirring cup; the dough cutting rod is positioned between the upper stirring teeth and the lower stirring teeth; the stirring rod rotates to drive the upper stirring teeth and the lower stirring teeth to rotate and mix and stir flour with water to make dough; the dough cutting rod cooperates with the upper stirring teeth and the lower stirring teeth to cut off or tear and deform the dough into dough pieces which are smaller than the dough inlet; when the upper stirring teeth and/or the lower stirring teeth rotate to the dough cutting rod, the projects of the dough cutting rod and the upper stirring teeth and/or the lower stirring teeth in the horizontal direction are at least partially overlapped. By adopting the mode, the effects of no residue, high possibility of dough feeding and high processing efficiency can be achieved.

The present invention provides a plain bearing having improved bearing properties, especially anti-seizure property, initial conformability and cavitation resistance. According to the present invention, a sliding layer is provided on a surface of a bearing alloy layer comprising of a copper-based or aluminum-based alloy, thereby the sliding layer is so structured that, to a polyamide-imide resin of a main constituent, a polyamide resin is added and mixed under a high shear force to form a polymer-alloyed resin binder, in which 1 to 75% by mass of a solid lubricant is dispersed. The sliding layer can have high toughness and strength, as well as improved anti-seizure property, initial conformability and cavitation resistance.

The invention relates to a brake shoe for hump speed reducer and the method for preparing the same. Said brake shoe comprises brake shoe body, peripheral reinforcing material, and bottom reinforcing material. Said brake shoe body employs the composite material of mixed fiber reinforcing resin and packing high friction packing material; said peripheral reinforcing material takes fiber reinforcing resin material; and said bottom reinforcing material employs iron plate or fiber reinforcing resin material. The method comprises processes of preparaing raw material, attaching moudle and shaping. The invention is characterized compared with current technology by high friction coefficient, good mechanical property and weather resistance, and low noise.

The invention relates to a micro-fluidic chip for cell culturing and simulating a post-exercise pulse shearing force environment, and a detection method, and belongs to the technical field of cell biomechanical experiment devices. The micro-fluidic chip comprises three parts: a cell culturing system, a shearing force waveform generating system and a shearing force waveform detecting system. The cell culturing system is formed by a cell culturing chamber, cell suspension liquid inlet/outlet and a microchannel; the shearing force waveform generating system is formed by a cell culturing chamber,cell culturing liquid inlet/outlet, an elastic chamber, a resistance channel and a microchannel; through adjusting a flow input waveform of the cell culturing liquid inlet and the size of a resistancechannel after changing, resting and loading of a post-exercise shearing force waveform are realized in the cell culturing chamber; the shearing force waveform detecting system is formed by pressure detecting microchannels on two sides of the cell culturing chamber, a liquid column change in the channel is detected through recording the pressure by a microscope, and the shearing force waveform inthe cell culturing chamber is further calculated through pressure values on two sides of the cell culturing chamber.

The invention provides a seven-stage adjustable rotary type electrorheological fluid brake. The seven-stage adjustable rotary type electrorheological fluid brake mainly comprises a positive pole conducting wire, a negative pole conducting wire, a bearing cap, a bearing, an end closure, conductive rubber, a half round key, a rotating shaft, an insulated shell, a positive pole, a negative pole, a backflow control channel, a small turntable, a middle turntable, a large turntable, electrorheological fluid and a flat key, wherein the installation type of the small turntable, the middle turntable and the large turntable is decided by suffered braking force, when the braking force is large, the stress is not clear and the rotating speed is high, the dual-turntable and three-turntable type is adopted; when the braking force is small, the single-turntable type is adopted; the backflow control channel is used for replacing a throttling control valve, an external electric field is not applied, and the electrorheological fluid is stressed, flows between the upper part and the lower part of the insulated shell through the backflow control channel and is a hydraulic brake; when the external electric field is applied and the high shear rate is adopted, the apparent viscosity of the electrorheological fluid of the backflow control channel changes, so that the sectional area of the electrorheological fluid becomes small till being completely closed; and the electrorheological fluid realizes the effective brake on an engineering system by providing shear force and extrusion force.

The invention relates to a special emulsification method. According to the method, stirring is stopped in the emulsification process, a mixture of W/O and little water or W/O/W is formed through standing, stirring is started, instantaneous inner shear force in unit area is increased, and formation of the O/W emulsion is facilitated; meanwhile, a hydrophilic emulsifier is dropwise added into the mixture during standing, the formation of the O/W emulsion is facilitated, and full wrapping and dispersing of droplets are facilitated to make the emulsion more stable; in the post-processing stage, the volume of the non-oil phase is increased by adding a stabilizer. By means of the preparation method, the problem that the viscosity of the emulsion with the high solid content is high is solved; meanwhile, the stability of the emulsion with the high solid content is improved, the preparation method is widely suitable for emulsification of hydrocarbons and oxygen-containing derivatives thereof, and the application range is wider.

The invention relates to a column type extraction device for pipe bundle multi-channel phase-dispersing; a main shaft is arranged inside the column type extraction device; two or at least three hollow thin tubes in parallel to the main shaft are distributed on the outer circumference of the main shaft; one end of each hollow thin tube is provided with a straight tube, and the other end of the hollow thin tube is bent to form a flanged bend; the bending direction of the flanged bend is the remote direction of a mounting shaft; the main shaft is connected with an electric motor, and drives the hollow thin tubes to carry out motion at a same speed with the main shaft when the main shaft rotates. The column type extraction device disclosed by the invention solves the difficult problems that a water phase or an oil phase with relatively small volume is difficult to disperse completely in the conventional mechanical stirring manner when the volume ratio of the water phase to the oil phase in an extraction process is large; and the difficult problems that the water phase and the oil phase are difficult to clarify and separate in an extraction system and the like caused by easy emulsification are also solved when the flow-rate ratio of the water phase to the oil phase is large.

The invention discloses a horizontal pulverizer, which comprises a primary pulverizing barrel; a drum is arranged inside the primary pulverizing bucket, and rotating shafts are arranged at both ends of the drum, and the rotating shaft protrudes from the primary pulverizing bucket; Pulverizing motor; the two rotating shafts are provided with a planetary gear structure. The planetary gear structure includes a sun gear, a planetary gear and a ring gear. The sun gear is fixedly connected to the rotating shaft, and the ring gear is fixedly connected to the primary crushing barrel. A connecting rod is provided between the gears, and a plurality of crushing rods are arranged on the connecting rod; a plurality of cutting blocks are arranged on the inner surface of the housing, and the cutting blocks and the chopping blocks are arranged in dislocation; the upper end of the primary crushing barrel is provided with a feeding Mouth; the casing is provided with a ring gear, and the ring gear is equipped with a gear matched with it, and the gear is provided with a motor to drive it to rotate. The horizontal pulverizer can improve working efficiency.

The invention relates to a disc type damper based on a magneto-rheological elastomer and magneto-rheological fluid. The disc type damper comprises a rotating shaft, a damper shell, a rotating disc, a coil and a damping assembly, wherein the rotating disc, the coil and the damping assembly are arranged in the damper shell. The damper shell is of a hollow disc type structure. The lower end of the rotating shaft sequentially penetrates shaft holes which are formed in the circle centers of the two surfaces of the damper shell and are in clearance fit with the rotating shaft. The rotating disc and the coil are sequentially arranged with the rotating shaft as the center from inside to outside. The rotating disc and the rotating shaft rotate jointly through a key. The damping assembly comprises the magneto-rheological elastomer and the magneto-rheological fluid, and the space, except for the rotating shaft, the rotating disc and the coil, in the damper shell is filled with the magneto-rheological elastomer and the magneto-rheological fluid. Compared with the prior art, the disc type damper has the beneficial effects of achieving dual damping, being good in effect, compact in structure and stable in rotating, facilitating wire leading and the like.

The invention relates to a preparation method of surface modified nano silicon dioxide colloid, which comprises the following step: linking surface modifier to surfaces of nano silicon dioxide particles through a bridging agent, thus obtaining surface modified nano silicon dioxide colloid. The invention also relates to the surface modified nano silicon dioxide colloid which is prepared through the preparation method. The invention also relates to application of the surface modified nano silicon dioxide colloid in preparation of a shear thickening liquid. The surface modified nano silicon dioxide colloid provided by the invention has shear thickening property; and when being used for oil displacement, the shear thickening liquid prepared from the surface modified nano silicon dioxide colloid can achieve the effects of controlling the fluidity and increasing the swept volume so as to enhance the oil recovery ratio.

The invention relates to an oxidation nanofiltration membrane reactor. The oxidation nanofiltration membrane reactor consists of a reaction-separation system (a raw material pump, an oxidation reaction kettle, a circulating pipe and a gas distribution plate), a pressurizing system (an ozone generator, a buffer tank, a pneumatic booster pump, an air compressor and a pressure-stabilizing tank) and a tail gas treatment system (an ozone absorption device), wherein a membrane component is encapsulated in a membrane component and placed into the reaction kettle; the circulating pipe is arranged at the position of a side arm of the kettle body; and the gas distribution plate is positioned on the top of a settling region. In the reactor, the kettle body serves as a liquid ascending region, the circulating pipe serves as a liquid descending region, gas is redistributed through a membrane channel, and gas liquid phases form slug flow in the membrane channel, so that gas liquid mass transfer is enhanced, the reaction process is enhanced and the utilization ratio of the gas is increased; and high-pressure ozonized air generated by the pressurizing system serves as a reaction source and a circulating power source of the reactor, so that the degradation of organic matters in the reactor is accelerated and a necessary impelling force is provided for separation of the nanofiltration membrane.The reactor has the advantages of simpleness and convenience in operation, high mass transfer efficiency, low energy consumption, easiness in amplification and the like.

The invention discloses an extruder in the field of grain feed machinery, which comprises a transmission system, a feed inlet, an extrusion cavity and a discharge device. The feed inlet is formed at the front end of the extrusion cavity; the discharge device is arranged at the rear end of the extrusion cavity; a discharging control valve is also arranged between the discharge device and the extrusion cavity; the discharging control valve comprises a valve body; and the valve body is provided with a valve cavity which transversely passes through the valve body. One side of the valve cavity is connected with the rear end of the extrusion cavity, and the other side of the valve cavity is connected with a discharging cavity in the discharge device. A spool mounting hole which longitudinally passes through the valve body is also formed on the valve body, and is intersected with the valve cavity; a lifting spool is arranged inside the spool mounting hole in a matching mode; the middle of the spool is provided with a transverse runner; the lower part of the spool is provided with a downward discharge channel; a side hole of which the opening faces one side of the extrusion cavity is formed on the upper part of the discharge channel; and a lifting regulating device is connected to the upper part of the spool. The extruder can regulate the pressure in the extrusion cavity, flow away materials by a bypass, and guarantee the balanced quality of extrusion processing.

The invention discloses a magnetic field generation device of magnetorheological polishing equipment. The magnetic field generation device comprises at least one electromagnetic pole group capable of generating a gradient magnetic field, wherein the electromagnetic pole group is composed of two electromagnetic poles opposite in polarity. According to the two electromagnetic poles forming one electromagnetic pole group, at least two concentric circles are set, and the adjacent annular magnetic poles are opposite in polarity. The magnetic field generation device is used for machining multi-degree of freedom movement workpieces through magnetorheological fluid, the outer surface(s) of one or more workpieces can be polished at the same time while the workpieces are clamped at a time, the outer surfaces of the workpieces can be planer or cambered or complex surfaces. By means of the magnetic field generation device of the magnetorheological polishing equipment, it is tested on trial that the problem that it is difficult to polish complex profile faces can be solved very effectively, the machining procedures of the workpieces can be reduced, and polishing efficiency is improved effectively.