31results about How to "Avoid character change" patented technology

The invention provides a cooling device for the interference fit of a large-scale workpiece. The cooling device comprises a liquid nitrogen container and a cooling tank, wherein the liquid nitrogen in the liquid nitrogen container is transmitted to the cooling tank through a pipeline. The cooling device is characterized in that a liquid nitrogen vaporization device is arranged on the pipeline; a cooling medium in the cooling tank is low-temperature gas generated after the liquid nitrogen is vaporized; an installation table for placing a contained piece is arranged at the bottom of the cooling tank; and the liquid nitrogen level in the cooling tank is lower than the table surface of the installation table. The cooling device can be used for controllably cooling a special-shaped contained piece which has large size, complicated structure and asymmetrical shape, so that the dimension of the cooled contained piece is contracted to reach the assembly requirements; the property change of a bearing material caused by rapid temperature reduction can be effectively avoided, thereby avoiding the contained piece from being damaged; the cooling course is safe and reliable; and the maneuverability is strong. The cooling device has the advantages of low time consumption, high efficiency, good interference fit effect, low cost and safe operation and does not generate the conditions that the contained piece is locked and damaged.

This invention discloses one semiconductor process method by use of super low medium materials which uses chemical agent reaction to remove metal medium materials after each layer of semiconductor metal process and fills low medium materials and then grow hard mask medium materials as protection layer on the low medium materials to process next layer of metal wire for repeating process to realize metal connection without chemical mechanic polishing damage.

The invention discloses a photoresist air isolation system. The system comprises an air supply device; a plurality of pressure regulating devices comprising glue discharging pressure regulating devices and pressure maintaining devices, wherein each pressure regulating device comprises a pressure reducing valve and a throttling valve, the air supply device is sequentially communicated with the pressure reducing valve and the throttling valve, and the pressure reducing valves of the pressure regulating devices are different in working use pressure; a valve terminal provided with a plurality of first air inlets, wherein the first air inlets are communicated with the pressure regulating device; and a photoresist storage device provided with a second air inlet and a photoresist outlet, wherein the second air inlet is communicated with the valve terminal. According to the invention, the problem that the glue solution is in contact with air when the glue bottle is replaced or the glue solution is refilled is effectively solved.

The invention discloses a novel corrosion-resistant storage device for chemical raw materials. The novel corrosion-resistant storage device comprises an outer storage box, wherein the outer storage box is of a cylindrical structure, and a side door is rotatably hinged to the vertical side of the outer storage box; a containing rotary disc is arranged on the bottom side of the interior of the outerstorage box, and a plurality of universal balls are arranged on the bottom side of the containing rotary disc; a plurality of storage cylinders are annularly arranged on the top side of the containing rotary disc at equal intervals, and the tops of the storage cylinders are covered with top covers in a sealed mode; a hidden pull handle is arranged on one side of each storage cylinder, and a powerbox is fixedly connected to the middle of the bottom side of the outer storage box; a rotating motor is fixedly installed on the bottom side of the interior of the power box through bolts, and an output shaft of the rotating motor is fixedly connected with a connecting circular plate; and a linkage shaft is fixedly connected to the middle of the bottom side of the containing rotary disc. According to the novel corrosion-resistant storage device for the chemical raw materials, the storage effect is guaranteed, the use energy consumption is reduced, and the use requirements of people in production and life are met.

The invention discloses a low-cost titanium alloy anti-oxidation annealing method, and belongs to the technical field of titanium alloy heat treatment so as to solve the problem that an existing titanium alloy is prone to being oxidized in the annealing process. The titanium alloy anti-oxidation annealing method comprises the steps that a titanium alloy bar with a protective coating is placed into a tubular annealing furnace, the tubular annealing furnace is filled with argon, then the temperature of the tubular annealing furnace is set at an annealing temperature, and annealing is carried out. According to the low-cost titanium alloy anti-oxidation annealing method, firstly, epoxy polyhedral silsesquioxane is used for carrying out chemical modification on methyl phenyl organic silicon resin, then the organic silicon resin serves as a film-forming base material of a coating, the protective coating is formed on the surface of the titanium alloy bar, annealing is carried out in the tubular furnace under the argon atmosphere, dual protection of argon and the protective coating is formed, the problem of oxidation of the titanium alloy in the annealing process is avoided, the titanium alloy bar can be subjected to annealing treatment at a high temperature, and the annealing cost is low.

The invention relates to a membrane spinning device. The membrane spinning device is used for preparing polymer solution into a micro-nano material and comprises an air guide pipe, a high-pressure airflow generator, a spinning nozzle, a liquid supply device and a receiving device. The high-pressure airflow generator and the spinning nozzle are arranged at two ends of the air guide pipe respectively, the liquid supply device is connected with the spinning nozzle, and the receiving device is arranged on one side of the spinning nozzle. The spinning nozzle comprises a flared spinning cavity communicated with the air guide pipe, two ends of the spinning cavity are provided with an injection orifice and an air inlet, the injection orifice is communicated with the spinning cavity and faces the receiving device, and the diameter of the cross section of the injection orifice is smaller than that of the cross section of the air inlet. By adoption of the flared spinning cavity, airflow pressure is effectively increased, solution forms a stable liquid membrane in the spinning cavity, and high airflow velocity is achieved through low airflow pressure; by a negative-pressure box in a collection area, the problem of generation of a great quantity of instable micro-nano fibers difficult to collect under high-speed airflow action is effectively solved.

The present invention relates to a method for adding lutein esters into foods, belonging to food processing field. The method comprises the steps of adding sterile lutein esters into sterilized food base material of liquid state under aseptic condition. The present invention also relates to a method for producing a food added with lutein esters, which comprises the steps that bactericidal processing is performed for food base material of liquid state, and sterile lutein esters preparation is added into sterilized food base material of liquid state. In the present invention, the loss of lutein esters in food processing can be reduced, the loss of health function of lutein esters caused by oxidation can be prevented, and the amount of addition of lutein esters can be decreased.

The invention relates to the technical field of amorphous alloy connection, in particular to a manufacturing method of a bulk amorphous alloy and the bulk amorphous alloy. The manufacturing method comprises the following steps that S1, a first amorphous alloy to be welded and a second amorphous alloy to be welded are adopted, respectively carrying out surface treatment on the interfaces to be connected of the first amorphous alloy and the second amorphous alloy; S2, the first amorphous alloy and the second amorphous alloy are spliced together, and the connecting interface of the first amorphous alloy and the second amorphous alloy is filled with amorphous alloy powder; S3, in the atmosphere environment, the temperature of the connecting interface of the first amorphous alloy and the temperature of the connecting interface of the second amorphous alloy are controlled, and the first amorphous alloy and the second amorphous alloy are mutually pressed; and S4, the steps S1 to S3 are repeated until the bulk amorphous alloy plate with the target thickness is obtained, the amorphous connection quality can be improved through the manufacturing method of the bulk amorphous alloy, and the manufacturing method has the advantage of being easy to operate.

The invention provides a gypsum calcinator which comprises a feeding device (1), a bottom blowing device (2) and an air evening device (3) which are arranged from top to bottom in sequence, wherein the feeding device (1) comprises a first dispersing cap (11) for primarily dispersing a gypsum powder material conveyed into the shell (4) and a plurality of falling through holes (12) which are uniformly distributed in the first dispersing cap (11); and the bottom blowing device (2) comprises a secondary dispersing cap (21) for secondarily dispersing the primarily dispersed gypsum powder material,an air allocation tube (22), an air evening plate (23) and a plurality of vent holes (24) which are uniformly distributed in the air allocation tube (22) between the secondary dispersing cap (21) andthe secondary dispersing cap (21). By adopting the device, gypsum powder conveyed into the gypsum calcinator is dispersed into a fluidization state, so that the consequence that the properties of a powder material are affected by partial over-calcination in the gypsum calcinator can be avoided.

The invention discloses an intelligent suitcase and a monitoring method and system for articles therein. The intelligent suitcase includes a smart camera and a CPU unit, wherein the smart camera is used for acquiring the pictures and names of articles in the smart suitcase, and the CPU unit is used for sending the smart camera acquired pictures and names of the articles to a mobile terminal. The intelligent suitcase provided by the invention solves the problems that the confirmation process of articles in existing suitcases is complex and the state of the articles cannot be effectively monitored, and at the same time can promptly remind the user changed articles.

The invention provides centrifugal sample separation equipment for agricultural product detection, and a centrifugal sample separation method thereof, and relates to the field of centrifugal detection equipment. The centrifugal sample separation equipment comprises a machine body and a box body, the box body is fixedly connected to the top end of the machine body, and a centrifugal frame is arranged in the box body; the centrifugal frame comprises lantern rings, a bearing sleeve, an internal thread sleeve, a shaft rod and connecting handles, the shaft rod is fixedly connected to a driving shaft extending out of the machine body, the connecting handles are symmetrically fixed to the side wall of the shaft rod, and the other ends of the connecting handles are fixedly connected with the internal thread sleeve; the bearing sleeve is arranged above the shaft rod, and the top end of the shaft rod is sleeved with the bearing sleeve; the lantern rings are symmetrically fixed on the side wall of the bearing sleeve; and a material processing device is arranged at the centrifugal frame and comprises a pumping and discharging pipe, a squeezing assembly, a juicing cup and a collecting assembly. The processing mode can effectively avoid the problems that after fruits in the atmospheric environment are sectioned, due to rapid oxidation, the juice property changes, and impurities are mixed into the juice.

The invention relates to a combined determination method for calcium and chlorine contents in a solid sintering aid, which comprises the following steps: 1, sampling and preparing a sample, rapidly collecting a sintering aid sample by using a sampler, and carrying out sealed storage, 2, weighing the sample, rapidly weighing about 1g of the sample by using an electronic balance, and 3, decomposing the sample, heating by a proper amount of distilled water at low temperature to completely dissolve the sample, cooling and fixing the volume; 4, performing calcium content detection and partial sample solution separation; and 5, performing chlorine determination: taking part of the sample solution, titrating the solution by using a silver nitrate standard, titrating by using a potentiometric titrator, indicating an end point through potential mutation, and carrying out blank determination at the same time; 6, calculating a result. The calcium content in the sintering aid is determined by adopting an EDTA complexometric titration method, the chlorine content in the sintering aid is determined by adopting an automatic potentiometric titration method. The technical problem of rapid detection of the content of calcium and chlorine in the existing sintering aid for sintering production is mainly solved.

An overlay of a sliding component, such as a sliding component for an engine, may provide a bearing surface against a steel journal, for example. The overlay may include intermetallic particles disposed in a matrix including tin (Sn). The matrix may be formed by electroplating. Examples of intermetallic particles include, but are not limited to, aluminides and nickel aluminides. The matrix may include an electroplated matrix of tin and/or a tin alloy.

The invention relates to the technical field of chemical raw material transportation, and discloses a liquid chemical raw material transportation wave absorbing device. The liquid chemical raw material transportation wave absorbing device comprises a raw material tank body and a wave absorbing floating plate, a positioning seat is fixedly connected to the inner bottom wall of the raw material tankbody, a supporting main shaft is movably connected into the positioning seat, and uniformly distributed connecting supporting shafts are movably connected to the outer side of the supporting main shaft, the wave absorbing floating plate is fixedly connected to the outer sides of the connecting supporting shafts, a long sliding groove is formed in the wave absorbing floating plate, a sliding blockis movably connected into the long sliding groove, and a dielectric plate is fixedly connected into the sliding block. According to the liquid chemical raw material transportation wave absorbing device, a wave receiving plate forms an inclined wave absorbing structure in the transportation process, after a liquid raw material makes contact with the raw material tank body, waves are formed to makecontact with the end face of the wave receiving plate, enter a containing cavity through wave absorbing holes, then make contact with a stress corrugated plate and leak out from the containing cavity, and stress waves formed by raw material oscillation are eliminated; and instability and property change caused by vibration in the transportation process are prevented.

The invention relates to the technical field of degradable film granulation, and discloses a granulation device for a biodegradable film. The granulation device comprises a rack, wherein the upper surface of the rack is fixedly connected with a water tank; the inner wall of one side of the water tank is fixedly connected with an inclined plate; a water outlet is formed in the outer surface of oneside of the water tank; one side of the water outlet is fixedly connected with a first main water pipe; a mounting hole is formed in one side of the first main water pipe; one side of the mounting hole is fixedly connected with a water distribution pipe; and the outer wall of the other side of the water tank is fixedly connected with a water pump. The granulation device can cool raw materials which are just extruded, so that the raw materials can be fully formed, and the cut raw materials are prevented from being adhered to affect subsequent use; moreover, energy generated by a device body canbe fully utilized, so that energy consumption and using cost are reduced; meanwhile, temperature control can be carried out according to the fact that the materials enter different positions, so thatthe melting effect of the raw materials is better; and a receiving hopper can be knocked, so that the workload of operators is reduced.

The invention provides an air disinfection device in a tunnel construction process, and relates to the field of air treatment in tunnels, the air disinfection device comprises a driving part and a box body, the driving part and the box body are vertically distributed, the driving part is a driving structure for driving the box body to move, and an air disinfection assembly is arranged in the box body; knocking assemblies are arranged between the left side and the right side of the air disinfection assembly and the inner wall of the box body, each knocking assembly comprises a knocking piece and an adapting piece, the adapting pieces are installed at the cover plate, the knocking pieces are rotationally connected with the adapting pieces, the filter plates are knocked through the knocking assemblies, dust and particulate matter attached to the filter plates are subjected to vibration treatment, and the filter plates are kept in a relatively clean state; and the long-acting filtering performance of the filter plate is ensured.