83 results about "Uniform size" patented technology

The invention discloses an ultrasonic abrasive flow surface texture machining device and method based on an auxiliary magnetic field, and belongs to the field of precision machining and surface engineering. The ultrasonic abrasive flow surface texture machining device comprises a workbench, an ultrasonic vibration generating device, a magnetic field generating device, an abrasive flow machining system and a three-dimensional motion platform. The composite abrasive particle suspension is composed of a basic solution, carbonyl iron powder magnetic particles and silicon carbide abrasive particles. According to the method, magnetic particles are guided by a magnetic field to form a chain along magnetic lines of force, ultrasonic high-frequency impact is combined, abrasive materials are driven to impact the surface of a workpiece in order, a submicron texture with the consistent direction and the uniform size is formed, the depth ranges from 0.2 micrometer to 2 micrometers, and the width ranges from 1 micrometer to 20 micrometers. Texture parameters are flexibly regulated and controlled through magnetic field and ultrasonic parameters, and the method has the advantages of being high in machining precision, high in controllability, low in cost, environmentally friendly and recyclable, is suitable for precise parts of bearings and cutters, and can remarkably improve the tribological performance and wettability of the parts.

The application discloses an incubation method of self-assembled organic material crystals based on double emulsion drops, and the method comprises the following steps: preparing W / O / W type double emulsion drops with uniform size through a microfluidic chip; during the preparation of the double emulsion drops, using a self-assembled organic material solution as an inner water phase solution, using a non-water-soluble solution as an intermediate oil phase solution, and using a water phase solution containing a high salt concentration as an outer water phase solution to encapsulate the self-assembled organic material solution, so as to avoid the self-assembled organic material from being free in the outer water phase solution; and incubating the double emulsion drops loaded with the self-assembled organic material solution. By using the concentration difference between the outer water phase solution and the inner water phase solution, under the influence of osmotic pressure, water molecules in the inner water phase solution migrate to the outer water phase, and the concentration of the self-assembled organic material in the double emulsion drops also increases, so as to promote the growth of the self-assembled organic material crystals, and finally, the self-assembled organic material crystals with uniform size are obtained in the double emulsion drops, and each double emulsion drop contains a single self-assembled organic material crystal.

The present invention relates to diamond abrasive grains and a manufacturing method thereof, and provides tetradecahedral diamond abrasive grains with uniform size and shape. The manufacturing method of diamond abrasive grains according to the present invention allows for shape control and minimizes impurities and crystal defects, thereby manufacturing diamond abrasive grains for ultra-precision grinding in chemical mechanical planarization (CMP) processes.

The utility model relates to the technical field of meat processing, in particular to a multipurpose meat mincing and cutting machine capable of being detached and cleaned, which comprises a support mounted at the top end of a base and a meat mincing barrel rotationally connected with the inside of the support, the top end of the meat mincing barrel is rotationally connected with a top cover, and a meat mincing mechanism for mincing meat in all directions is arranged in the meat mincing barrel. And a meat cutting mechanism for automatically and orderly cutting meat into blocks is arranged in the meat mincing barrel. According to the meat mincing device, the meat mincing mechanism is arranged, the meat mincing mechanism in the meat mincing device has all-directional movement modes of rotation and revolution, the contact area and the contact frequency of food materials and the blades are increased, and therefore the food materials are quickly and evenly minced; according to the meat mincing mechanism, meat can be automatically and rapidly cut into blocks with the uniform size, so that the meat mincing uniformity is improved, the cutter can be rapidly replaced, and after meat mincing is completed, the inner wall of the meat mincing barrel can be flushed, and residues are avoided.

The present invention discloses a device for manufacturing developing microspheres and a method for manufacturing developing microspheres, wherein the device for manufacturing developing microspheres is used to manufacture developing microspheres, aiming to solve the problems of inconsistent microsphere size, low production efficiency and complex operation in the prior art. The device comprises a rotatable inner cylinder and a stationary outer cylinder. A microsphere precursor solution is introduced into the space between the inner cylinder and the outer cylinder as a dispersed phase through a syringe. The space has a continuous phase and forms uniform microspheres under the shear force of the inner cylinder, which are finally collected in a collection tray. By precisely controlling the rotation speed of the motor, the aperture of the injection needle of the syringe and the flow rate of the precursor solution, the present invention can manufacture developing microspheres with uniform size and low polydispersity. In addition, the design of the developing microsphere manufacturing device also takes fluid stability into consideration. By adding a rod in the collection tray and arranging a bearing at the bottom of the inner cylinder, the bearing and the rod cooperate to reduce the swing and turbulence of the inner cylinder, thereby further improving the production quality of the developing microspheres.

The present disclosure provides a molded magnesium carbonate body including between 90-99.9 wt% magnesium carbonate formed into a plurality of uniform shapes having uniform sizes. Between 80-99.9 wt% of the molded magnesium carbonate body may crushed to a fine powder containing a plurality of particles having an average diameter or longest dimension for the plurality of particles between 0.5-100 µm when the molded magnesium carbonate body is subjected to crushing with a force of 100 N for at least 1 second. The present disclosure also provides a molding process for forming such molded magnesium carbonate bodies by suspending magnesium carbonate particles in an alcohol / water mixture having an alcohol:water ratio between 30:70 and 40:60 to form a uniform slurry, filling a mold having desired dimensions of the molded magnesium carbonate body with the slurry, and drying the slurry to form a solid molded magnesium carbonate body

The utility model discloses a wall hanging plate device capable of being rapidly installed on site in a fixed-length mode, two adjacent wall hanging plates are spliced through an I-shaped decoration strip, each wall hanging plate comprises a box-shaped face plate and a sealing plate, a rectangular notch is formed in a side plate at the cutting end, and a bottom plate is bent along the rectangular notch to form a cover plate; the I-shaped decoration strip comprises two back-to-back supporting plates and buckle plates arranged at the two ends, and the two ends of a vertical plate of each supporting plate are bent to form a first folded edge and a second folded edge respectively. The two ends of a panel of the pinch plate are bent to form bent parts respectively, an insertion groove is formed between the bent parts and the panel, the two pinch plates are a front pinch plate and a back pinch plate respectively, and the first folding edge and the second folding edge are inserted into the front pinch plate and the back pinch plate respectively. According to the utility model, customized processing does not need to be carried out according to wall surface sizes and decoration requirements of different places, batch production can be carried out according to a uniform size, cutting can be carried out on site, all wall hanging plates are mechanically completed, the mold cost is reduced, and the product size precision and the production efficiency are improved.

The present application relates to a kind of surface patterning microspheres of uniform size and its preparation method and purposes, the preparation method includes: preparing W1 / O initial milk or oil phase O'; adding stabilizer and initiator synthesis W1 / O / W2 complex emulsion emulsion or O' / W2 single emulsion emulsion;Different surface patterning microspheres are prepared by rapid membrane emulsification method.The preparation method of the present application is simple in operation, mild condition, good batch repeatability and easy to enlarge.

The invention provides an atomic precision metal cluster containing a multi-layer ligand spherical shell and a water phase synthesis method of the atomic precision metal cluster. The aqueous phase synthesis method comprises the following steps: performing first mixing on a metal precursor aqueous solution and a ligand aqueous solution, supplementing water to obtain an initial solution, and performing second mixing; then adding a reducing agent aqueous solution to obtain a reaction mixed solution; carrying out first stirring on the reaction mixed solution, concentrating, carrying out second stirring, and supplementing water; and repeating the operations of concentration, secondary stirring and water supplementation to obtain the atom precise metal cluster containing the multilayer ligand spherical shell. The multi-layer ligand spherical shell is adopted to protect the cluster, so that the cluster core can stably exist in an extremely long time without obvious change, and co-production, storage and utilization of related clusters are facilitated; and the metal clusters with uniform size and precise atoms can be directly obtained and have the same molecular weight, so that the post-treatment step can be simplified, and the feasibility of product amplification and application is enhanced.

The invention belongs to the technical field of biology, and particularly relates to a hybridization chain reaction based on a DNA tetrahedron nanostructure. The present invention proposes an innovative method for triggering an HCR reaction by using a DNA tetrahedral framework (TDF) with an HCR initiation strand at the vertex. The core of the method lies in the special geometric structure of the TDF and the electrostatic repulsion effect between the TDF and a vertex initiation chain, and the effect enables the initiation chain to be in a consistent extension state at the beginning of the reaction. The preset extension state contributes to synchronous acceleration of the hybridization rate between the initiation chain and the hairpin chain H1, thereby ensuring efficient start of the HCR reaction. More importantly, the method can produce HCR products with uniform sizes, solves the problem of inconsistent lengths of the products in the traditional HCR reaction, and greatly improves the quality and predictability of the products.

The invention provides a preparation method of calcium alginate microspheres with uniform size, which comprises the following steps: S1) heating and mixing first edible oil and a first surfactant to obtain an oil phase; mixing sodium alginate with water to obtain a water phase; s2) respectively introducing the water phase and the oil phase into a crisscross microchannel to obtain a water-in-oil microsphere; and S3) curing the water-in-oil microspheres in a curing liquid to obtain the calcium alginate microspheres. Compared with the prior art, the preparation method has the advantages that the oil phase and the sodium alginate aqueous solution are sheared in the intersection channel to form the water-in-oil microspheres, then the water-in-oil microspheres are subjected to the curing reaction in the turbid liquid containing the calcium chloride microemulsion, and finally the calcium alginate microspheres are obtained, so that collision fusion after the water-in-oil microspheres are generated is reduced; therefore, the obtained calcium alginate microspheres have the characteristics of round and uniform shape, uniform size and high curing speed, meanwhile, the operation is simple, and the preparation cost is low.

The present invention provides a glove box protective glove that is easy to don and doff and has no eccentricity. The glove box protective glove comprises a finger portion, a palm portion, a wrist portion, and an arm portion, which are connected in sequence and integrally formed by a compression molding process using a glove mold. The finger portion has a conical structure, and each finger is centrally symmetrical. The palm portion has a uniform thickness throughout and is symmetrical front to back. The wrist portion is wider than the maximum width of the palm portion, and the arm portion has a conical structure with a gradually increasing diameter and is centrally symmetrical. The compression molding process includes the following steps: precisely controlling the raw material ratio and the quality of the molding material; providing pressure control and measurement points in the glove mold to ensure uniform force on all parts of the glove; and after the glove mold is closed, controlling the holding time according to the properties of the molding material and ensuring sufficient venting. By symmetrically designing the overall structure of the finger portion, palm portion, and arm portion, and optimizing the manufacturing process, the problem of glove size eccentricity is effectively solved, ensuring uniform size and performance of the glove product.

To provide a droplet forming device and a method for producing gel particles, each enabling production of droplets having uniform size.SOLUTION: A droplet forming device comprises an ejection head that ejects droplets of liquid. The ejection head has a cylindrical liquid retention member that retains the liquid, and a vibration unit that covers one end of the liquid retention member and, together with the liquid retention member, forms a liquid chamber retaining the liquid, and ejects droplets based on an applied electrical signal. The liquid chamber has the other end of the liquid retention member that is open to the atmosphere. The vibration unit has a vibration member that vibrates based on the electrical signal, a film-like member with an ejection port through which droplets are ejected, and a resonating member that vibrates based on the vibration of the vibration member and transmits the vibration of the vibration member to the film-like member by vibrating itself. The resonating member is a plate-like member that overlaps and comes in contact with the film-like member in a planar manner.SELECTED DRAWING: Figure 2

The application discloses a filter assembly and belongs to the filtering field, and solves the problem that the filter membrane is damaged due to the bending of the support plate and the intensified abrasion of the filter membrane. The technical solution for solving the problem is that a support body is arranged between two adjacent support plates, the support body supports and holds the central region of the support plate at the two ends at least, so as to prevent the central region of the support plate from warping. The application is mainly used for effectively preventing the downward bending or warping of the support plate, maintaining the straight extension of the whole support plate, avoiding the damage of the filter membrane, and forming the flow channel with uniform size between the adjacent support plates, so that the fluid can flow through the adjacent filter units quickly, and the filtering efficiency is improved.

The application provides a preparation method of quartz processing micro-nano material, which comprises the following steps: obtaining quartz powder material of a required grade by performing preliminary cleaning, rough crushing, fine crushing, rough grinding, magnetic separation and screening on quartz ore raw materials; mixing the obtained quartz powder material with a grinding aid agent, wherein the grinding aid agent is PVA grafted silica microspheres; performing classification on the obtained powder by a high-performance gravity-free negative pressure grinder, and performing separation on the fine powder obtained after the classification by a high-efficiency powder separator to obtain micro-nano material with a particle size less than 150 nm; and removing PVA from the micro-nano material after treatment. After obtaining the quartz powder material with uniform size, performing secondary fine grinding, and adding the grinding aid agent PVA grafted silica microspheres, on one hand, the nano microspheres have a small particle size, and on the other hand, after the quartz powder material is filled with the microspheres, the microspheres assist in impacting and rubbing the quartz particles when grinding, so that the quartz powder material is more easily formed into smaller substances to obtain the micro-nano material with a required particle size.

The utility model discloses a turnover type adsorbent particle classificator, and aims to solve the problems that most enterprises in the existing hemoperfusion device industry adopt manual operation, and no mature machine equipment is used for completing batch production and automatic production of adsorbent particle damage, adhesion and the like, and the turnover type adsorbent particle classificator comprises an outer frame, a discharging mechanism is connected to the interior of the outer frame, a turnover mechanism is connected to one side of the lower portion of the discharging mechanism, a rotary turnover structure and a vibration structure are arranged at the lower end of the turnover mechanism, the turnover mechanism is used for screening out unqualified adsorbent particles with damage, adhesion and the like, and a collecting table is connected to one side of the lower end of the turnover mechanism. Adsorbent particles which are uniform and consistent in size are equivalently transferred through the screw rod, and damaged, irregular, adhered, unround and inconsistent-size adsorbent particles are further screened out in cooperation with the flat plate with a certain inclination, the turnover mechanism, vibration of the vibration machine and the like.

The invention discloses an activity protection device for freeze-drying manufacturing of serofluid lactic acid bacteria, and belongs to the technical field of freeze-drying manufacturing activity protection. And an external temperature control cover. According to the activity protection device for freeze-drying manufacturing of the serofluid lactic acid bacteria, through the use of the dropwise adding mechanisms, a uniform and flexibly-adjustable dropwise adding mode is provided, the uniformity and quality of freeze-dried products are guaranteed, a plurality of groups of independent dropwise adding mechanisms are arranged, and a dropwise adding head is driven by a rotating motor to rotate at a high speed, so that the uniformity and the quality of the freeze-dried products are guaranteed. According to the device, the centrifugal force is applied to a bacterial suspension, so that the bacterial suspension forms liquid drops with uniform sizes under the action of centrifugal force, the dropping angle is accurately controlled by the angle adjusting motor, different receiving containers and process requirements can be met, uniform and controllable dropping is realized, and the problems of different sizes, non-uniform distribution and the like of the liquid drops generated by a traditional dropping mode are solved; therefore, the final freeze-dried product is ensured to have good uniformity and relatively high quality.

This invention discloses a highly comfortable bag backrest material. The raw materials, by weight, include: a plastic material and a solid filler, wherein the weight ratio of the plastic material to the solid filler is 100:(0.1-5). This invention uses a specific gravity of 1000-1100 kg / m³. 3 TPEE with a melt flow index of 3-8 g / 10 min is used to prepare backpack backrest materials with suitable hardness and density, capable of supporting the weight of the backpack and alleviating pressure on the back. Furthermore, the use of titanium dioxide with a particle size ≥3000 mesh as a solid filler, working in conjunction with TPEE, results in backpack backrest materials with good hardness, demonstrating good mixing and processing performance between the plastic material and the solid filler. Simultaneously, the reaction temperature during processing is 170-180℃, and the foaming pressure is 40-50 MPa, which improves the foaming efficiency of the sheet, forming cells of uniform size and structure, giving the sheet good resilience.

The application relates to the technical field of high-temperature alloy welding, and provides a method for strengthening a liquid-phase diffusion welded joint and a welding system using the same.S1: after the welding surfaces of two Ni3Al-based alloy blocks are polished, the surfaces are carburized;S2: the attachments on the carburized surfaces are removed, and BNi-2 is selected as an intermediate layer to perform liquid-phase diffusion welding.The beneficial effects are that the welding affected zone is removed through the holding procedure at a first specified temperature T1, and the uniformity of the joint composition and structure is realized.The cooling speed is not less than 5 DEG C / min after the holding to a second specified temperature T2, the nucleation rate of intracrystalline gamma'-Ni3Al phase is increased, and the coarsening thereof is inhibited, and the cubic or near-cubic precipitated phase with uniform size is generated;then the cooling speed is not more than 5 DEG C / min to a third specified temperature T3, the joint and the base material grain boundary M 23 The precipitation and growth of C6 type carbides generate the granular / rod-shaped / strip-shaped strengthening phase which is uniformly distributed along the grain boundaries.

The utility model discloses a manufacturing tool for a U-shaped ring of a crown block heavy punch, which belongs to the technical field of U-shaped ring manufacturing and comprises a base, a working plate detachably connected onto the base, a limiting round tube arranged above the base, a limiting component arranged above the base, a placing area formed between the limiting component and the limiting round tube, a placing frame arranged on one side of the outside of the working plate, and a clamping groove arranged on the other side of the working plate. And an auxiliary clamping hand is placed in the placing frame, so that standardized manufacturing of the heavy punch U-shaped ring can be realized, the problems of non-uniform size and irregular shape in the manufacturing process are avoided, large difference between batches is avoided, and the requirement of standardized assembly is met.

The application relates to the technical field of plate cutting, and discloses a full-automatic splitting machine for metal plates based on furniture production, which comprises a splitting table, mounting frames fixedly connected to the center of the two sides of the splitting table, a main rotating shaft rotationally connected between the inner walls of the mounting frames, a cutter head fixedly connected to the outer wall of the main rotating shaft, a motor one with one end fixedly installed with a motor one, an output shaft of the motor one fixedly connected with the main rotating shaft, a control panel arranged on the outer side of the mounting frame, a feeding table arranged above the splitting table, a steering assembly arranged below the feeding table and capable of driving the feeding table to continuously steer, through the steering assembly, when the feeding table drives the plate to move back from right to left and the plate has not passed through the cutter head, the feeding table is driven to rotate by 90 degrees, thereby driving the plate to synchronously rotate by 90 degrees, the cutting direction of the plate is changed, secondary splitting in the vertical direction is realized, and the square metal plate can be split into four plates with uniform sizes in combination with one-time longitudinal splitting and one-time transverse splitting.

The invention discloses an interdigital transducer, a resonator and a surface acoustic wave filter, and the interdigital transducer comprises a first busbar and a second busbar which are arranged in parallel, a plurality of first finger strips and second finger strips are arranged on the first busbar in a manner of extending towards the second busbar, and a plurality of third finger strips and fourth finger strips are arranged on the second busbar in a manner of extending towards the first busbar. A first gap with the same size is formed between each first finger strip and each third finger strip, a second gap with the same size is formed between each second finger strip and each fourth finger strip, all the first gaps form a first virtual line, and all the second gaps form a second virtual line; the first virtual lines and the second virtual lines have the changing trend, first filling strips are arranged between at least part of the first finger strips and the adjacent second finger strips, and second filling strips are arranged between at least part of the third finger strips and the adjacent fourth finger strips. The method has a good inhibition effect on transverse waves.

The present application relates to a kind of device and method for preparing large size tin ball by predetermined amount synergistic spheroidization, the device includes wire feed assembly, spheroidization cooling assembly below wire feed assembly, control system;The method is that tin wire is cut off quantitatively after using wire feed assembly, and after complete melting in spheroidization cooling assembly, tin ball with diameter greater than 1.0mm~3.0mm is formed.The present application can control the size of tin ball by wire cutting, and large size tin ball with uniform size and good roundness is produced.The present application can realize the preparation of large size tin ball by the principle that tin liquid is rapidly contracted into ball under the action of surface tension in forming liquid.The tin ball preparation device of the present application is designed ingeniously, easy to operate, and can be flexibly adjusted according to needs, and multiple specifications of large size tin ball are produced with high production efficiency.

The application discloses a full-automatic wafer roll machine, and relates to the field of roll machines, which comprises a rack, a transmission assembly and a combustion system fixedly installed inside the rack, outer sealing plates fixedly installed around the rack, a heat preservation layer fixedly installed around and on the top of the outer sealing plates, and an operation table fixedly installed at the center of the rack. The full-automatic wafer roll machine is characterized in that ignition is performed, the baking wheel is heated through a combustion pipeline, the thickness and width of the dough paste on the baking wheel surface are made uniform by the dough paste hanging plate, the baking wheel rotates for one circle to bake the dough skin, the dough skin is scooped up by the shovel of the shovel mechanism, the dough skin is rolled into a cylindrical shape by the shaping mechanism, the cylindrical roll is cut into rolls with uniform length by the rotary cutting mechanism, and the cut rolls are packaged in the chute. Each link is connected, the action is coherent and orderly, and the machine can continuously produce qualified products with uniform size and length, uniform color and luster, and good taste.

A plastic waste crusher for uniform crushing, comprising a machine box (1), a transfer material platform (2), a pushing mechanism (3), a lifting mechanism (4), a crushing mechanism (5), a vibration mechanism (6), a discharge door (7), and a screening mesh (8). A feed hopper (101) is arranged at the top of the machine box (1), and a discharge port (102) is arranged at the lower end of the machine box (1). The transfer material platform (2) is arranged on each of the left and right sides of the feed hopper (101) and the transfer material platform (2) is fixed to the top of the machine box (1). The pushing mechanism (3) is installed on each of the left and right sides of the machine box (1), with each pushing mechanism (3) facing the transfer material platform (2). The machine box (1) is provided with the crushing mechanism (5), and the screening mesh (8) is fixed below the crushing mechanism (5) inside the machine box (1), the middle of the screening mesh (8) is higher than its two sides. The vibration mechanism (6) is arranged directly below the screening mesh (8), and the lifting mechanism (4) is mounted on the machine box (1) and extends to both the left and right sides of the screening mesh (8). The disclosed crusher can crush plastics multiple times, achieving more thorough crushing, facilitating plastic screening, and producing plastic particles of more uniform size.

The utility model discloses a fruit sorting machine relates to fruit processing technical field, include: the fruit tray of installing in the weighing sorting machine main part top, the rear side of weighing sorting machine main part is rotatably connected with the sorting basket through the rotating shaft, the inner chamber of sorting basket is divided into the storage cavity of uniform size through a plurality of partition plates, and the rear side of every storage cavity is installed with the baffle, and the bottom of storage cavity inner chamber is provided with intercepting subassembly. The utility model discloses the setting of rotatable connection of sorting basket can according to the shape of fruit itself, and the angle of inclination of sorting basket is adjusted flexibly to control the speed of fruit rolling, avoids the collision of fruit rolling speed too fast, causes the damage of fruit.

The invention discloses a chiral spiral gold nanorod with {111} crystal face oriented growth and a preparation method of the chiral spiral gold nanorod, and belongs to the technical field of nano materials. According to the chiral spiral gold nanorod, a single-surface gold nanorod is prepared to serve as a gold seed, then a chiral inducer is used for regulating and controlling parameters such as the proportion and concentration of a growth solution and the adding amount of a gold seed solution, and thermodynamics and dynamics of nanogold growth are regulated and controlled so as to promote formation of a spiral chiral structure and reduce generation of impurities; and finally, centrifugally purifying to obtain a high-purity product. The obtained chiral spiral gold nanorod is uniform in size and stable in chiral signal, the surface plasma resonance wavelength can be simply adjusted within the range of 700-900 nm, and the technical problems that in traditional chiral plasma nanostructure preparation, efficiency is low, the structure is unstable, and nanoscale size control is difficult to achieve are solved. The method has wide application value in the fields of chiral sensing, chiral asymmetric catalysis, plasma nano antennas and the like.