53results about How to "Oscillate evenly" patented technology

A vibration damping device that can prevent interference between a rolling mass and a cover resulting from deformation of the cover caused by pressure rise, and that can suppress noises is provided. The torsional vibration damping device comprises: a rotary member that is arranged in a torque converter; a rolling mass that is oscillated relatively to the rotary member by torque pulse; a bore that is formed on an outer circumferential portion of the rotary member in such a manner as to penetrates through the rotary member in a direction parallel to a rotational center axis; a cover that covers the rolling mass and the bore liquid-tightly to protect from oil in the torque converter; and a deformation-preventing member that prevents a deformation of the cover in a direction toward the rolling mass.

The invention relates to a screening and collecting device, in particular to an efficient soil screening and collecting device for potted plant planting, and aims at achieving the technical purpose of providing an efficient soil screening and collecting device for potted plant planting. In order to achieve the technical purpose, the efficient soil screening and collecting device for potted plant planting comprises a bottom plate and the like; supports are arranged on the left side and the right side of the top of the bottom plate respectively, a collecting tank is arranged in the middle of the top of the bottom plate, a swinging device is arranged between the left-side support and the right-side support, the bottom of the swinging device is located over the collecting tank, and a screening device is arranged in the swinging device and penetrates through the outer side of the swinging device. According to the efficient soil screening and collecting device for potted plant planting, the effect that soil coarseness and fineness screening can be effectively conducted, coarse soil blocks or stones unbeneficial to plant growth in soil are screened out, and then plant planting and growing are promoted is achieved, and the practicability is good.

The invention discloses a method of preparing high-purity heparin sodium. The method is characterized in that under a room temperature of 298K, an organic precipitation method is adopted to remove heparin sodium-like impurities dermatan sulfate and chondroitin sulfate in the heparin sodium to prepare high-purity heparin sodium, so that the heparin sodium and similar substances thereof are separated according to solubility difference in different polar solvents. The method is suitable for purifying and separating the sodium-like impurities dermatan sulfate, chondroitin sulfate and the like in the heparin sodium to prepare the high-purity heparin sodium, and has remarkable social and beneficial benefits.

The invention discloses a remediation device for extracting heavy metal in soil. The remediation device comprises a soil sample treatment system. An outlet of the soil sample treatment system is connected with an ultrasonic reinforced extracting system, a mud outlet of the ultrasonic reinforced extracting system is connected with a mud-water separating system, a water outlet of the ultrasonic reinforced extracting system is connected with an extraction liquid treatment recycling system, recovered water of the mud-water separating system is connected to an inlet of the extraction liquid treatment recycling system, and recovered water of the extraction liquid treatment recycling system is connected to a water inlet of the ultrasonic reinforced extracting system. The remediation device can efficiently extract the heavy metal in the soil and can also conveniently recover and utilize an extracting agent, the remediation cost is reduced, and the secondary pollution of the environment is reduced.

The invention provides an oscillation cross section adjustable oscillator. An up-down sliding mechanism comprising a guide slide rail and a guide slide block is adopted between an oscillation support and a fixed mount; and in a process of sliding up and down, the guide rail is free from external force, so that the running abrasion and the sliding friction resistance can be greatly reduced, defects of stress deformation and the like of a guide rod in the prior art can be eliminated, the operation is stable and reliable and the service life is long. A mounting column in a separating funnel positioning device can slide in an adjustment arc chute of an oscillation box along a lower rotary pin shaft, so that the mounting column is in an inclined state; an adjustment range of an angle of inclination is determined by an arc angle of the adjustment arc chute, so that to-be-oscillated bottle body liquid is properly tilted according to requirements of a tester, the surface area of the liquid stored in an actually oscillated bottle is increased, the oscillation uniformity of the to-be-oscillated liquid is improved, and the oscillation homogenization time is also reduced. A motor is controlled by avariable frequency electric actuator to ensure that the oscillation frequency can be changed, and the oscillator has a variable frequency and is efficient, energy-saving and reliable.

The invention provides a preparation method of a lubricating grease containing modified graphene. The preparation method comprises the following steps: mixing a first part of base oil with a high-molecular acid and a low-molecular acid, heating the obtained mixture, adding barium hydroxide, carrying out a saponifying reaction, refining the obtained reaction product, cooling the refined reaction product, adding a premixed second part of base oil and modified graphene, performing stirring until uniformity, and grinding the obtained mixture into grease in order to obtain the lubricating grease containing modified graphene, wherein the modified graphene is prepared by the following steps: co-doping graphene oxide, used as a raw material, with silicon, boron and phosphorus, carrying out reduction treatment to obtain multi-doped graphene, organically modifying the multi-doped graphene with 7-octenyltrichlorosilane, carrying out a polymerization reaction on the obtained intermediate and 2-ethylhexyl acrylate, and finally mixing and reacting the obtained polymerization product with 7,7,8,8-tetracyano-p-xylylenequinone to obtain the modified graphene. The obtained lubricating grease producthas the advantages of good colloid stability, high dropping point and excellent antifriction performance.

A torsional vibration damper in which vibration damping performance is ensured by preventing a contact between a rolling mass and a rotary member. A rolling mass includes a trunk penetrating through a bore. A first corner formed in an axial end of the trunk is rounded. A rotary member includes a second corner formed in the bore. an axial length of the first corner of the rolling mass is longer than an axial length of the second corner of the rotary member.

The invention discloses an intelligent constant temperature and ultrasonic wave promoting desorption integrated coal sample tank and a using method thereof. The coal sample tank comprises a tank bodyand a tank cover, the tank cover is provided with an exhaust pipe, and the exhaust pipe is provided with a gas flow meter and an air exhaust valve. A temperature regulating inner container is arrangedon the inner wall of the tank body, and a thermal insulating layer is further arranged between the temperature regulating inner container and the inner wall of the tank body. A temperature sensor isinstalled in the tank body, and an intelligent temperature control device is installed on the side wall of the tank body. The temperature regulating inner container and the temperature sensor are bothelectrically connected with the intelligent temperature control device. According to the intelligent constant temperature and ultrasonic wave promoting desorption integrated coal sample tank and theusing method thereof, intelligent dynamic regulation and ultrasonic wave desorption promotion of the temperature inside the tank body can be performed for arbitrary downhole temperature, and adsorption gas in a coal sample is evenly oscillated, so that the gas desorption rate in the coal sample is accelerated, the desorption is more complete, and the determination of gas content in underground coal samples is more accurate.

The invention belongs to the technical field of medical and health products, and particularly relates to reusable mask fabric and a preparation method thereof. The preparation method includes the steps: adding polyvinylidene fluoride resin powder, polyurethane powder, nano powder and liquid polyacrylonitrile into a graphene oxide aqueous solution containing 1-butyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imide; uniformly performing oscillating by ultrasonic waves to obtain a paste material, and then pewreforming pushing and pressing, calendering, foaming by microwaves, stretching, sintering and molding, and reducing the processed paste material to obtain the product. A corresponding mask product can be obtained by processing the mask fabric, is not limited by an electret technology any more, realizes interception of bacteria, viruses, dust and the like by controlling the pore diameter of micropores of the film, and can be reused infinitely theoretically. An adhesive is not used for being compounded with other materials, so that the permeation resistance of gas is not increased, and better air permeability is achieved.

A hydraulic valve device, especially an LS current regulating valve, includes a fluid connection arrangement (10). As the respective control device (14) associated with a useful connection (A) comprises a control slide (16) upstream of which a pressure balance (18) is mounted in the fluid direction towards each useful connection (A, B), any system vibrations occurring in the load sensing regulating circuit can be better controlled and the respectively connected hydraulic consumer can be subjected to a constant current regulation.

The invention provides a pharmaceutical preparation for treating liver and gallbladder damp-heat and a preparation method thereof. The preparation method comprises the following steps: mixing potentilla anserine, vervain, lalang grass rhizome, radix puerariae, longhairy antenoron herb, fiveleaf akebia fruit, stir-fried radix paeoniae rubra, indigo naturalis, spora lygodii, herba epimedii, radix bupleuri, bran stir-fried rhizoma atractylodis, lavender, endive and liquorice roots in a specific proportion, and carrying out water decoction extraction and filtration to obtain an extracting solutionand filter residues; then crushing fried coix seeds and purple rice to obtain mixed powder, preparing a fermentation culture medium from the mixed powder and the filter residues, inoculating candidautilis, bacillus subtilis and geotrichum candidum, performing fermentation and centrifugation, taking a supernate to obtain fermentation liquor, and mixing the fermentation liquor with the extractingsolution to obtain mixed powder; adding the mixed powder into a hydroxyethyl cellulose-silkworm silk fibroin mixed solution, and carrying out uniform ultrasonic oscillation and drying to obtain an inclusion compound; and finally, mixing the inclusion compound with auxiliary materials to prepare capsules. Compared with a common traditional Chinese medicine decoction, the capsule is convenient to take and has a good treatment effect on liver and gallbladder damp-heat.

The invention provides a preparation method of silk fibroin lyophilized powder. The preparation method includes that small molecular silk fibroin is formed after silk fibroin is enzymatically hydrolyzed, starch is introduced and enzymatically hydrolyzed, viscous small molecular substance is generated after starch enzymolysis and adhered to the surface of the small molecular silk fibroin, and induction action of alcohol, crosslinking action of polyethylene glycol diglycidyl ether and freeze-thawing action are combined to enable the silk fibroin lyophilized powder to be in nanoscale size, supportive of transdermal absorption and good in cosmetic effect. The silk fibroin lyophilized powder is a lyophilized powder product and is high in activity and convenient to use.

The invention provides a degradable polyurethane biological material as well as a preparation method and application thereof. According to the method, the degradable polyurethane biological material is obtained by performing electrostatic spinning on a first solution and a second solution; a preparation method of the first solution comprises the following steps of adding a lysine monomer and a p-nitrophenyl adipate monomer into N, N-dimethylacetamide, heating and stirring to react, adding nano calamine powder, and continuously reacting to obtain nano particles; adding casein and acrylic acid into water, uniformly stirring and mixing, under the protection of nitrogen, adding potassium persulfate, stirring and reacting, adding the nano particles, and irradiating by electron beams to prepare modified nano particles; and finally, adding polyether glycol, the modified nanoparticles and dibutyltin dilaurate into N, N-dimethylacetamide, and carrying out ultrasonic oscillation uniformly to obtain the degradable polyurethane biological material, wherein the second solution is prepared by adding diisocyanate into the N, N-dimethylacetamide and uniformly stirring and mixing. The biological material prepared by the invention has excellent mechanical property and degradation property and wide application prospect.

The invention provides equipment for uniformly oscillating a chemical reagent, and relates to the field of chemical experiment equipment. The equipment for uniformly oscillating the chemical reagentscomprises a rectangular box frame and a box door, a motor is fixedly mounted at the bottom of the inner side of the rectangular box frame, a fixed box is fixedly mounted at the top of the motor, motorframes are mounted on the two sides of the fixed box, a disc is fixedly mounted on a vertical rod, and a test tube rack is fixedly mounted at the top of the disc; and a transmission type photoelectric sensor is fixedly mounted on the right side of the test tube rack. According to the equipment for uniformly oscillating the chemical reagent, the fixed box and the motor can be fixed through the motor frame, the test tubes of the transparent tubes can rotate through the rotating shaft and rotation so that the chemical reagents in the test tubes can uniformly rotate, and fresh air can enter the rectangular box frame when the rectangular box frame rotates through the ventilating pipe; and the temperature in the box can be better controlled.

A turbo type centrifugal pump is provided in which an angular oscillator is angularly oscillated so that fluid in a radial through hole receives centrifugal force. The angular oscillator is used in combination with a resonance oscillation motor that generates angular oscillation. The resonance oscillation motor is incorporated in the pump so that the pump structure and the drive mechanism are integrated. This reduces the size of the pump. Since the angular oscillation is a reciprocating rotation within an oscillation range less than 360°, a suction pipe can be connected to the radial through hole used in the angular oscillation. This eliminates the necessity for providing a shielding structure.

The invention relates to smashing equipment, in particular to ore smashing equipment for metal smelting. The ore smashing equipment for metal smelting comprises a moving device, a smashing device, a collecting tank, a treatment tank and a left support. The treatment tank and the collecting tank are arranged at the top of a bottom plate, and the treatment tank is located on the left side of the collecting tank. The left support is arranged on the left side of the top of the bottom plate, a right support is arranged on the right side of the top of the bottom plate, and the moving deice is arranged at the top of the left support and the top of the right support. The smashing device is arranged at the bottom of the moving device and located above the treatment tank. The ore smashing equipment for metal smelting has the effects that ore can be smashed more evenly, smashing efficiency is high, and smashed ore can be taken out more conveniently; and the smashing device moves and knock ore to smash the ore at the same time.