32results about How to "No need to seal" patented technology

The invention provides an acceleration type electric eddy inert energy dissipation device. The acceleration type electric eddy inert energy dissipation device is characterized by comprising a connecting lug ring, a ball screw rod, a rotary outer barrel, a rotary nut, a coil inner barrel, a coil, a rotary permanent magnet, an additional mass block, a rotary groove, a ball, a connecting rod, a spring unit, a spring unit protection barrel and the like. The acceleration type electric eddy inert energy dissipation device has the beneficial effects that additional mass is more convenient to set and the mass synergistic agent is remarkable. Actual small mass is synergized into equivalent big mass through a synergistic mechanism, and more energy of an input structure is shared; meanwhile, the structure safety is more effectively protected, vibration energy of earthquake, wind vibration, human-induced excitation and the like are consumed, and the energy consumption performance is good; the acceleration type electric eddy inert energy dissipation device can be widely applied to the fields of earthquake (vibration) reduction and absorption and energy source infrastructures. Safe, green and efficient social and environment targets of development of China are met. An electromagnetic damping force is convenient to set and earthquake responses of the structure are effectively reduced.

The present invention refers to a mechanical coolant pump 10 for an internal combustion engine. The mechanical coolant pump 10 for an internal combustion engine comprises an impeller 18 for pumping the coolant into an outlet channel 16 which comprises an outlet valve 20. The outlet valve 20 comprises a shiftable flat valve plate 22 which is shiftable in a transversal plane of the outlet channel 16 through a passing slit 24 in the outlet channel wall 26.

The invention discloses a method for separating and enriching < 7 > Li isotope through extraction-electromigration coupling. The method comprises the following steps: uniformly mixing an ionic liquid, a diluent and a crown ether compound to form an extraction organic phase; uniformly mixing the extracted organic phase with a lithium salt solution, extracting, and collecting a lithium-loaded organic phase; the anode, the cathode, the anolyte, the catholyte and the isolating membrane jointly form an electromigration system, wherein the anolyte is the obtained lithium-loaded organic phase, and the isolating membrane is arranged between the anolyte and the catholyte; and finally, electrifying the electromigration system to obtain the cathode solution rich in < 7 > Li. According to the method, under the action of an electric field, the lithium isotope separation effect continuously exists, the enrichment limitation of the front end and the tail end of an ion migration flow does not exist, the isolation membrane is not subjected to saturation capacity limitation, meanwhile, all solution phases can be recycled, and the process is clean and environment-friendly; in addition, the process has no special requirements on temperature, humidity, air and the like, and sealing is not needed.

The invention relates to a pipeline built-in decompressing throttling valve technology for a low-temperature system at the temperature of 200 DEG C below zero. A built-in pipeline valve is adopted, namely the valve is directly arranged in a pipeline through an upper clamp and a lower clamp to realize a decompressing throttling process of low-temperature fluid in the pipeline, a flange or a thread is not needed to be connected, and the aims of non-sealed leakage-free pipeline transport and process control over the low-temperature fluid are fulfilled. By the pipeline built-in decompressing throttling valve, the problem of pipeline leakage caused by damages to a sealing surface due to high mutation possibility of the low-temperature fluid in the pipeline under low-temperature high-pressure working conditions is solved, and the throttling valve is suitable for decompressing and throttling refrigeration processes of the low-temperature fluid in the pipeline and contributes to controlling the pressure and the temperature of the low-temperature fluid in the pipeline, so that a low-temperature phase change transport process is kept relatively stable. The throttling valve also can be used for solving the technical problem brought by dynamic phase change refrigeration of the low-temperature fluid in the pipeline with variable pressure, variable temperatures and variable flow, the phase change refrigeration efficiency of the low-temperature fluid in the pipeline is improved, and the low-temperature fluid in the pipeline is effectively managed.

The patent provides a split mechanical seal with split ring connection interface adopting magnetic fluid sealing for a molten salt pump and aims at solving the problem that moving and static ring split connection interface have leakage channels during installation and a split connection interface convergent gap caused by asymmetric deformation of a split ring leaks fluid during work. Two half rings forming a moving ring and two half ring forming a static ring are respectively embedded into a pair of magnetic generators, namely a first magnetic generator and a second magnetic generator on eachpair of split ring connection interfaces; the first and second magnetic generators comprise first and second pole shoes and first and second permanent magnets; opposite work faces of the first pole shoes and the second pole shoes are provided with pole teeth and tooth sockets which are arranged at intervals along the radial direction and the axial direction; planes, towards the end face of a sealring, of the first pole shoes and the second pole shoes, are provided with one group of pole teeth and tooth sockets arranged at intervals; magnetic fluid on the split ring connection interfaces and radial sealing tapes, towards the end face of the seal ring, of the split ring connection interfaces, forms a fluid film for blocking magnetic fluid under the action of a magnetic force.

The invention discloses a magnetorheological elastomer shock absorber, comprising a fixed outer cylinder, a magnetorheological elastomer, a middle cylinder, a coil, a top cylinder, a piston assembly, a bottom cylinder and a coil fixing ring; the bottom cylinder is connected with one end of the middle cylinder, and the other end of the middle cylinder is connected with the top cylinder; a fixed separator is further mounted between the bottom cylinder and one end of the middle cylinder, and a fixed separator is also mounted between the other end of the middle cylinder and the top cylinder; a small cylindrical cavity is formed between the fixed separators and the magnetorheological elastomer and a piston piece are mounted in the small cylindrical cavity; the bottom cylinder, the middle cylinder, the top cylinder, the magnetorheological elastomer and the piston assembly form a main body; the fixed outer cylinder is mounted outside the main body; the coil is mounted in a coil mounting hole formed in a circular-ring-shaped column of the fixed outer cylinder and the fixed outer cylinder is mounted on a mounting plate; a buffer mounting plate is further mounted on one end of the piston rod and an acceleration sensor is mounted on a lower side of the buffer mounting plate; the magnetorheological elastomer shock absorber is simple in structure, easy to manufacture, convenient to mount and good in shock absorption effect, and can be widely popularized and utilized.

The present invention provides an iron-selenium alloy and a preparation method thereof. The preparation method comprises: uniformly mixing iron powder and selenium powder, and placing the mixture in aquartz boat or a graphite boat; placing the quartz boat or the graphite boat in a quartz pipe, and introducing a protection gas into the quartz pipe; and placing the quartz pipe into a synthesis furnace, heating to a temperature of 650-850 DEG C at a heating rate of 20-70 DEG C / min, carrying out thermal insulation, cooling, and discharging out of the furnace so as to complete the preparation of the iron-selenium alloy. According to the present invention, the preparation method has advantages of simple process, short production period, high production efficiency, high raw material utilizationrate and high equipment utilization rate.

The invention discloses an axial surface contact slip ring of a flexible rolling body and relates to the technical field of slip rings, the slip ring comprises a first supporting shell, a second supporting shell, a supporting shaft, a plurality of first disc type contact electrodes, a plurality of second disc-type contact electrodes, a plurality of flexible rolling mechanisms and a plurality of isolation plates, the supporting shaft is arranged in the first supporting shell and the second supporting shell; the plurality of second disc type contact electrodes are embedded in the supporting shaft; the isolation plates are fixedly arranged on the first supporting shell and the second supporting shell. The inner wall of the first supporting shell and the inner wall of the second supporting shell are provided with wire grooves and first electrode key grooves, each first disc type contact electrode is embedded in the corresponding first electrode key groove, and each second disc type contactelectrode and the corresponding first disc type contact electrode are in rolling connection through a flexible rolling mechanism. The defects that an existing slip ring is small in contact area and large in friction loss and needs to be sealed are overcome, the friction loss can be reduced, the contact area is increased, and sealing is not needed.

The present invention refers to a mechanical coolant pump 10 for an internal combustion engine. The mechanical coolant pump 10 for an internal combustion engine comprises an impeller 18 for pumping the coolant into an outlet channel 16 which comprises an outlet valve 20. The outlet valve 20 comprises a shiftable flat valve plate 22 which is shiftable in a transversal plane of the outlet channel 16 through a passing slit 24 in the outlet channel wall 26.

The invention provides a pipe expander for a spherical corrugated pipe, which relates to the field of oil drilling. The pipe expander comprises a roller body, a roller shaft and a pipe expander sphere, wherein the lower end face of the roller shaft is a tapered plane; a cylindrical convex shaft perpendicular to the lower end face is arranged downwardly on the lower end face; the convex shaft is provided with a through hole along the central axial line of the convex shaft; the pipe expander sphere is provided with a through hole along the central axial line of the pipe expander sphere; the convex shaft is inserted into the through hole of the pipe expander sphere from the upper end; a dowel is inserted into the through hole of the convex shaft from the lower end of the through hole of the pipe expander sphere; the pipe expander sphere is locked tightly onto the roller shaft through build-up welding; the lower end face of the roller body and the upper end face of the roller shaft are adhered with each other and are welded and fixed together; and the horizontal distance between the center of the pipe expander sphere and the central axial line of the roller body is more than 0 mm to form an eccentric structure. The pipe expander can trim the corrugated pipe to obtain reasonable roundness and surface smoothness under the condition of a lower torque; and simultaneously a structure ofa bearing part greatly improves the strength of the pipe expander so as to ensure the safety in underground construction.

A detachable hollow fiber membrane module, including hollow fiber membrane filaments, and a membrane case for installing the membrane filaments, the membrane casing is provided with a water production port; the two ends of the fiber membrane filaments are respectively inserted into A needle, and a hoop is provided on the outside of the fiber membrane silk corresponding to the position of the needle; the membrane silk is placed in the membrane shell, and the two ends of the membrane silk and the hoop are exposed on the the outside of the membrane shell; two end caps are respectively used to connect to the two ends of the membrane shell, and an inner hole is arranged in the middle of one end of the end cap; wherein, when the end cap is connected to the end of the membrane shell When it is in the middle, the inner hole wall of the end cap presses the hoop, tightens the fiber membrane filament and the needle, and the outer end of the needle passes through the end cap. The detachable hollow fiber membrane module structure of the present invention does not need to be sealed with epoxy resin, and the membrane shell and end cap can be reused to improve efficiency and reduce waste of materials.

The invention relates to a method for preparing a micron monodisperse polymeric microsphere under a room temperature condition. According to the invention, the monodisperse polymeric microsphere is prepared by utilizing the reaction of mercaptan and isocyanate through precipitation polymerization without surface active agent or stabilizer. The method comprises the following steps: uniformly mixing mercaptan monomer with isocyanate monomer; under an effect of a basic catalyst, standing by and reacting for 1-8 hours under room temperature; washing the acquired product with a solvent; centrifugally precipitating; drying, thereby acquiring the monodisperse polymeric microsphere. The preparation method provided by the invention is simple and reliable; the reaction is performed under the room temperature; no sealing or stirring is required; the time consumption is short; the monomer dosage is large; the microsphere yield is high.

The invention discloses a railway locomotive wheel rail solid lubricating block and a preparation method thereof. The solid lubricating block comprises a lubricating rod (1), a boss (2) and a groove (3), wherein the boss (2) is arranged at one end of the lubricating rod (1), the groove (3) is formed in the other end of the lubricating rod (1), the four edge corners of the boss (2) are respectively in smooth transition, the side surface of the boss (2) is in chamfering connection with the plane of the lubricating rod (1), the four edge corners of the groove (3) are respectively in smooth transition, the side surface of the groove (3) is in chamfering connection with the plane of the lubricating rod (1), and one side surface of the lubricating rod (1) is provided with waves which are matched with a material delivery belt. The solid lubricating block has the advantages that the surface of the lubricating rod (1) is provided with the waves which are matched with the material delivery belt, and the groove is formed in one end of the lubricating rod, so the installation and replacement are convenient, and the easiness in falling is avoided; the connecting plane of the groove and the lubricating rod and the connecting plane of the boss and the lubricating rod respectively adopt the chamfering connection, and the edge corners of the groove and the boss are respectively in smooth transition, so the installation is convenient, the friction between the lubricating block and equipment is reduced, and the abrasion of equipment is decreased.

The invention discloses an axial surface contact slip ring of a flexible contact electrode. The slip ring comprises a first supporting shell, a second supporting shell, a supporting shaft, a pluralityof first disc-type flexible electrodes, a plurality of second disc-type flexible electrodes, a plurality of flexible rolling mechanisms and a plurality of isolation plates, the supporting shaft is arranged in the first supporting shell and the second supporting shell; the plurality of second disc-type flexible electrodes are embedded in the supporting shaft; the multiple isolation plates are fixedly arranged on the first supporting shell and the second supporting shell. Each of the inner wall of the first supporting shell and the inner wall of the second supporting shell is provided with a wire groove and a first electrode key groove, each first disc-type flexible electrode is embedded in the corresponding first electrode key groove, and each second disc-type flexible electrode and the corresponding first disc-type flexible electrode are in rolling connection through a flexible rolling mechanism. The defects that an existing slip ring is small in contact area and large in friction loss and needs to be sealed are overcome, the friction loss can be reduced, the contact area is increased, and sealing is not needed.

The invention relates to a vacuum pump and particularly relates to an oil leakage-free and low-noise rotor driving mechanism of a vacuum pump. The rotor driving mechanism comprises a motor, a shaft and a rotor, and is characterized in that the motor is connected with a connecting body through a first shaft; first magnets are arranged at the inner side of the connecting body; a vacuum pump shell is arranged between the first magnets; a second shaft provided with second magnets is arranged between the shell walls of the vacuum pump shell between the first magnets; one end of the second shaft is connected with the rotor; the position of the second magnet is corresponding to that of the first magnet. According to the oil leakage-free and low-noise rotor driving mechanism of the vacuum pump, magnetic coupling is used for motion transmission and the problem that oil leakage occurs in a traditional oil seal method is avoided.

The invention relates to the technical field of self-priming pumps, in particular to a magnet-free idling-resistant integrated modular temperature-resistant and corrosion-resistant high-lift self-priming pump. The magnet-free idling-resistant integrated modular temperature-resistant and corrosion-resistant high-lift self-priming pump comprises a motor and a pump head driven by the motor to pump liquid. The motor comprises a motor shell made of plastic, corrosion-resistant bearing seats, a corrosion-resistant motor shaft, a rotor assembly and a stator. The two ends of the corrosion-resistant motor shaft are connected into the corrosion-resistant bearing seats in a shaft mode through corrosion-resistant bearings. The rotor assembly is formed by coating the surface of a rotor with a rotor plastic shell, and is connected to the outer wall of the corrosion-resistant motor shaft in a sleeving mode. The stator is fixed to the inner wall of the motor shell and is arranged outside the rotor assembly in a gap and sleeving mode, and the gap is 300-600 micrometers. Compared with the prior art, the magnet-free idling-resistant integrated modular temperature-resistant and corrosion-resistant high-lift self-priming pump requires no magnet, the magnetic density gap can reach 300-600 micrometers, and the problem of narrow magnetic density gap of an asynchronous motor is solved; the plastic is used for realizing the isolation of the pump head for circulating liquid from the motor, and the corrosion-resistant effect is achieved; and the structure is simple, transmission is simple, abrasion resistance and corrosion resistance are achieved, self priming is realized, and the shortcomings that a pump with a magnet is complicated, prone to being damaged, prone to leaking, and not resistant toidling are overcome.

The invention relates to a strong sealing device of a hydraulic chuck for a gas pumping rig. The strong sealing device comprises a body, a cylinder, an external interface and an inner cylinder, wherein the body, the cylinder and the external interface are coupled sequentially; and one end of the inner cylinder is arranged in the body and coupled with a rack wheel, while the other end of the inner cylinder extends out of the external interface and is coupled with the chuck. The strong sealing device is technically characterized in that TB3 Che seals, wear resisting rings and glands are arranged at both ends of the cylinder; the TB3 Che seals are hermetically packaged between the cylinder and the inner cylinder through the glands; the outer circular walls of the TB3 Che seals are compactly attached to the inner wall of the cylinder body; the inner circular walls of the TB3 Che seals are attached to the outer wall of the inner cylinder through the wear resisting rings in a sealing mode; and the TB3 Che seals are compressed at both ends of the cylinder through the glands. The oil distributing and sleeving sealing device has the advantages of high-pressure resistance, wear resistance, and seal and no leakage, and wear of contact face can be automatically compensated.