136results about How to "Productive" patented technology

The invention relates to a method for preparing active carbon from rice straw. The method comprises taht: (1) the collected rice straw is subjected to alkali cleaning, cleaned to neutrality, dried, and cut or pulverized; (2) the rice straw is added into an activator solution, evenly stirred, soaked for 12 to 24 hours, subjected to solid-liquid separation, cleaned and dried; (3) the rice straw prepared in step (2) is put in a barrate type oven and pre-oxygenated for 1 to 2 hours; (4) the pre-oxygenated rice straw is put in a tube-type carbide furnace, heated for temperature rise under the protection of nitrogen gas, and activated; and (5) the activated rice straw is washed by water till pH is between 6.5 and 7.5, and dried at 105 DEG C to prepare the active carbon. The active carbon prepared by the method has good adsorption performance; the adsorptive value of methylthionine chloride reaches between 200 and 300 mL/g; and the preparation process is simple, economical and environment-friendly, meets requirement of clean production and circular economy development, and has good industrial application prospect.

The invention relates to a method for preparing superfine calcium carbonate by adopting glycine as a dissolving agent, a modifying agent and an acid-binding agent, extracting effective calcium from calcium sources, such as carbide slag or lime, and the like and charging carbon dioxide into a reactor for calcifying, filtering and washing and application of the superfine calcium carbonate to paper making, paint production, and the like.

The invention discloses a semi-submersible type production platform of reservoir oil positioned below a water surface. The semi-submersible type production platform comprises an annular buoyancy tank, a box-shaped deck and at least three upright posts, wherein the annular buoyancy tank is internally provided with a water ballast tank, an oil storage compartment and a pump compartment; the box-shaped deck is provided with an oil-gas processing system, well drilling equipment, a positioning mooring system and a moon pool and internally provided with a production function compartment and a well drilling equipment compartment; and the annular buoyancy tank is connected with the box-shaped deck through the upright posts. The semi-submersible type production platform has an oil-gas production function, a storage and transportation function and a well drilling function, can be removed and reused, is flexible and suitable for the early pilot production and a deepwater oil field and bore well development, can be used effectively lowering the economic risk of the development of a deepwater oil and gas field, has more excellent motion performance compared with a ship form and a circular platform by adopting a semi-submersible type platform structure form and can meet the requirement for simultaneous performance of platform well drilling and production operation under the conditions of harsh marine environments, i.e. the South China Sea and the like.

The invention discloses an inner-electric-arc plasma torch for gasifiers and relates to plasma heating equipment. The inner-electric-arc plasma torch is mainly composed of a front torch body, a rear seat, a first electrode and a fourth electrode, an arc cavity and a cooling water jacket are structured in the front torch body, an inlet and a compression nozzle are respectively arranged in two ends of the arc cavity, the cooling water jacket is arranged on the outer side of the arc cavity, and the head of the first electrode is arranged out of the arc cavity of the front torch body and is close to the inlet; the head of the fourth electrode (8) extends to the compression nozzle side in the arc cavity through the compression nozzle, a metal component at the position of the compression nozzle forms a third electrode, a second annular discharging surface is arranged on the third electrode, a metal component at the position of the inlet forms a second electrode, and a first annular discharging surface is arranged on the second electrode; or the head of the fourth electrode further extends to the arc cavity from the compression nozzle and is close to the inlet, and the metal component at the position of the inlet forms an auxiliary electrode. By the inner-electric-arc plasma torch, water vapor can be heated and decomposed in the arc cavity, energy is concentrated on water molecules, and the water molecules are easier to decompose.

This is a new technology of dyeing the ready-to-wear clothes; it is an integration treatment for to dye part of clothes or whole clothes. It contains: Before the clothes treatment, after resistively polymerization, and to dot-dye, to inject-dye, to pendent dye or expand print, expand paint, or use at least two kinds of these dyeing process, then to inject paint or inject drawing. After that, oxide titration, eliminate washing, biological water washing, dehydration, dry over heat, after the treatment of clothes to print them or drawing them by directly action.

The invention relates to an intelligent Chinese food cooking device and a cooking method thereof. The invention can used for solving the problem that the standardized production of cooked food can not be carried out in the prior art; the key points of the technical scheme in the invention are as follows: the intelligent Chinese food cooking device also comprises a main control module, a container temperature detection unit, a drive temperature detection unit, a clock control unit and a power control unit, the input end of a drive control unit, the output end of the container temperature detection unit, the output end of the drive temperature detection unit, the clock control unit and the power control unit are electrically connected with the main control module, the output end of the drive control unit is electrically connected with the control end of heating equipment, the detection end of the power control unit is electrically connected with an excitation coil, the monitoring end of the drive temperature detection unit is propped against the drive control unit, and the monitoring end of the container temperature detection unit is propped against a container. The intelligent Chinese food cooking device can realize the cooking of combination of multiple Chinese food technologies, is used for carrying out the standardized production of cooked food and business application, and is low in investment and easy to realize.

The invention discloses an alcohol-soluble electromagnetic wave shielding coating, which comprises the following components by weight percentage: 20-50 percent of conductive powder, 25-45 percent of conductive resin, 0.5-2 percent of coupling agent, 2-4 percent of dispersing agent, 0.5-3 percent of alignment agent and 17-50 percent of alcohol solvent. The invention aims to overcome the defects ofthe domestic electromagnetic wave shielding coating at present, and provides a coating which can shield electromagnetic waves and effectively reduce the electromagnetic radiation pollution.

The invention discloses a method for extracting bromine by industrial wastewater rich in Br-, and is characterized in that bromine is obtained by electrochemical oxidation, blow-out, and collection of industrial wastewater which is pretreated by purification and is rich in Br-; in the electrochemical oxidation, an electrolytic tank is partitioned into a cathode chamber and an anode chamber by an ion exchange membrane; the anode electrolyte is an aqueous solution which is rich in Br- and is obtained by purification treatment of the industrial wastewater rich in Br-; the cathode electrolyte is an acid solution with a pH of 1-4; the temperature of the electrolytes is controlled at 25-45 DEG C; the current density is 0.01-0.1 A/cm2; or a constant voltage is 0.5-6.0 V; after electrolytic balance is reached, the anode electrolyte is removed, and bromine is obtained by air blow-out, condensation, gas-liquid separation, and water-bromine separation. The method of the invention overcomes the disadvantages of bromine preparation by traditional oxidation process through chlorine, hypochlorite, and the like; the method is applicable to the treatment of industrial wastewater with a bromide ion concentration of 0.02-11.5 mol/L, and the process is simple and environment-friendly.

The invention relates to a composite antibacterial peptide produced by bacillus natto NT-6 and a production method thereof. The composite antibacterial peptide product is a mixture of three kinds of homologs of antibacterial lipopeptide substances iturins, fengycins and surfactins in the proportions of 10-20 percent, 25-35 percent and 50-60 percent respectively; the antibacterial peptide pure product is a yellow viscous substance which can resist heating of 30 minutes at the temperature of 100 DEG C, can keep activity at the pH of 2-12, has broad-spectrum antibacterial activity for bacteria and fungi and has strong killing effect on protozoa and cancer cells; and experiments prove that the peptide has high safety. The invention also discloses the production method of the composite antibacterial peptide. The peptide can be easily produced by using the process, is relatively low in cost, and can be used as a food preservative, a feed additive, an agricultural biological control agent, a medicament, an animal disease preventing agent and the like.

The invention discloses a plant tissue culture rooting and seedling exercising integrated cultivating device and a cultivating method thereof. The cultivating device comprises a plant cultivation system, an illumination system, a ventilation temperature-control system, a fluid supplying system, a CO2 supplying system and an environment control system. The plant cultivation system comprises a three-dimensional multi-layer cultivation frame and cultivation containers placed on the cultivation frame, each layer of multiple layers of the cultivation frame is provided with one cultivation container, and lifting seedling disc supports are arranged at the bottoms of the containers and used for suspending cultivation plants. The illumination system comprises lamp boxes, LED lamp tubes and fans, and the LED lamp tubes are arranged inside the lamp boxes and connected with the fans to be installed above the cultivation containers in an integrated mode without communication with the cultivation containers. On the premise of guaranteeing that space and time are saved, the cost is low, and the utilization rate of resources is high, the utilization rate of the resources and labor productivity are increased, the cultivation period is shortened, and the production cost is lowered.

The invention relates to a halogen free flame retardant liquid and a method for preparing a flame retardant sponge using the same. The halogen free flame retardant liquid has the flame retardant effect up to a UL V-0 grade, durable flame retardant effect and no smoke toxicity and comprises 100 parts of water based adhesive, 0.5-5 parts of curing agent, 0.1-5 parts of anti-settling agent, 0-2 parts of color fixing agent, 0-100 parts of colorant, 100-300 parts of environment-friendly flame retardant, 100-400 parts of inorganic flame retardant and 1200-1800 parts of water, wherein the anti-settling gent is at least one of organic modified bentonite, fumed silica, polyethylenewax, polyamide wax or titanate coupling agent, and the environment-friendly flame retardant is at least one of phosphorus flame retardant or phosphorus and nitrogen flame retardant. The method for preparing the flame retardant sponge comprises the step of immersing an open-cell sponge in the above halogen free flame retardant liquid and drying to obtain the product. The halogen free flame retardant liquid can be obtained through a conventional mixing process, and the method for preparing the flame retardant sponge is simple, can be in continuous production, improve production efficiency and lower cost.

The present invention discloses a strain of Bacillus methylotrophicus VJ4-1, and a method for producing natural vanillin by ferulic acid biotransformation with the Bacillus methylotrophicus VJ4-1, wherein a name of the strain is Bacillus methylotrophicus VJ4-1, the strain is preserved in the China center for type culture collection (CCTCC) in Wuhan University on January 16, 2012, and a preservation number is CCTCC NO:M2012004. The method of the present invention has advantages of high yield, simple process, mild reaction conditions, less environmental pollution, high product concentration, simple extraction step, clean production, environmentally friendly products, safety, reliability, wide main raw material source, low cost, and natural property, and has an industrial production prospect.

The invention discloses a risperidone nano-suspension temperature sensitive gel and its preparation method. Each 100ml of the nanosuspension temperature sensitive gel contains 0.1-10g of risperidone, 0.1-5g of a stabilizer, 1-50g of a temperature sensitive gel material, 0-5g of an additive, and the balance of a water-based solvent. The risperidone nano-suspension temperature sensitive gel is a temperature sensitive controlled-release in situ gel. The above dosage form makes risperidone highly dispersed, so the gel has the advantages of good drug load and good stability; after the gel is administrated in a liquid form, phase transition occurs in applied sites, and the liquid becomes non-chemically-crosslinked semisolid gel, so the gel has good histocompatibility and improves the drug dissolution rate; and the administrated gel has a long retention time in the applied sites as a drug reservoir, so the gel has a slow release effect, prolongs the drug release time, improves the drug bioavailability, reduces the administration frequency and improves the drug effect and the patient compliance.

The invention discloses monodisperse titanium dioxide nanometer microballoons and a preparation method thereof. The diameters of the nanometer microballoons are 1.5-2.5 micrometers, and the microballoons have uniform size, good dispersity and high specific surface area. The single microballoon is formed by clustering nanometer wires with a length of 0.5-1.0 micrometer and a diameter of 20-30 nanometers. A reaction system consists of a residual solution left after a metal titanium plate reacts with hydrogen peroxide and a sodium hydroxide solution and is subjected to a hydro-thermal reaction for 20-64 hours at 120 DEG C to prepare the microballons; and after adopting subsequent proton exchange and heat treatment at 450-700 DEG C, the nanometer microballoons are crystallized into anatase. In the presence of the same condition, the efficiency of the nanometer microballoons subjected to heat treatment at 600 DEG C for assisting photocatalysis to degrade rhodamine B dye in water is obviously superior to that of commercial titanium dioxide nanometer powder Degussa P25.

The invention belongs to the technical field of an adhesive tape in an electronic product, and particularly relates to a single-side fire-retardant adhesive tape and a preparation method thereof. Thesingle-side fire-retardant adhesive tape comprises a substrate layer, a bonding agent layer and a release material layer, wherein the bonding agent layer is arranged on the surface of the substrate layer; the release material layer is arranged on the surface of the bonding agent layer; the bonding agent layer is prepared from raw materials of polyacrylate, curing agents, a first fire-retardant agent, a second fire-retardant agent and a solvent; the first fire-retardant agent is solid at normal temperature; the second fire-retardant agent is liquid at normal temperature. The preparation methodcomprises the steps of adhesive mixing, coating, composite reeling and curing. Compared with the prior art, the single-side fire-retardant adhesive tape has the following advantages that the bonding agent layer comprises two kinds of phosphorous fire-retardant agents; low smoke and low toxicity are realized; the phosphorous content is high; a good fire-retardant effect is achieved. The technical scheme provided by the invention is applicable to the adhesive tape finished product with high fire-retardant grade requirements; the adhesive mixing process is simple; the goal can be achieved by a general coating process; the characteristics of mass production and stable production are realized.

The invention discloses a self-crosslinked expansion flame-retardant material and a preparation method thereof and relates to a self-crosslinked expansion flame-retardant material and a preparation method thereof. The invention aims at solving the problems of long time consumption, harsh environmental requirements and low comprehensive performances of the existing flame-retardant material. The self-crosslinked expansion flame-retardant material is prepared from 94-96 parts of a material A, 2-4 parts of a material B and 1-3 parts of a material C by weight. The method comprises the following steps: 1) preparing flame-retardant resin; 2) preparing the material A; 3) preparing the material B; 4) preparing the material C; and 5) mixing the materials, and extruding and granulating to obtain the self-crosslinked expansion flame-retardant material. The method disclosed by the invention is used for preparing the self-crosslinked expansion flame-retardant material.

The invention discloses a preparation method of a pervaporation composite membrane filled with hydrophobically modified nano calcium carbonate. The preparation method of the pervaporation composite membrane filled with hydrophobically modified nano calcium carbonate comprises the following steps: (1) adding dried nano calcium carbonate into oleic acid, stirring for reacting, then repeatedly washing with hexane for removing excess oleic acid,, drying in vacuum, and grinding so as to obtain hydrophobically modified nano calcium carbonate; (2) mixing dried polyvinylidene fluoride with hydrophobically modified nano calcium carbonate, subsequently adding the mixture into dimethylacetamide, carrying out ultrasonic dispersion, stirring, filtering, standing and defoaming, and subsequently pouring the obtained liquid on a polyester non-woven fabric for scraping a membrane so as to obtain a modified polyvinylidene fluoride base membrane by using an immersion precipitation phase inversion method; and (3) dissolving polydimethylsiloxane in n-hexane, adding hydrophobically modified nano calcium carbonate, carrying out ultrasonic dispersion, adding a cross-linking agent and a catalyst, stirring for reacting, centrifuging and dedoaming, subsequently pouring the obtained liquid on the polyvinylidene fluoride base membrane for scraping the membrane, airing and drying the membrane in vacuum to prepare the pervaporation composite membrane. The composite membrane prepared by the method is simple in process and low in cost, and moreover, the selectivity and the flux of the composite membrane on alcohol are improved.

The invention relates to intermittent micro-foaming injection molding equipment and an intermittent micro-foaming injection molding process. the intermittent micro-foaming injection molding equipment mainly comprises a supercritical fluid permeable system provided with a permeable kettle, a storing system, and an injection molding system provided with a loading hopper, wherein the storing system mainly comprises a fetching device, a condensing storing barrel and a metering feed device; the fetching device is used for taking out saturated raw material in the permeable kettle and then sending the saturated raw material into the condensing storing barrel, the condensing storing barrel is used for sending the saturated raw material into the loading hopper of the injection molding system through the metering feed device. The specific process mainly comprises the following steps: arranging the raw material in the permeable kettle, releasing pressure after performing the saturated permeation by using the supercritical fluid so as to obtain the saturated raw material, adding the saturated raw material in an injection molding machine, fusing and plasticizing to obtain a homogeneous solution of polymer/gas to finish the injection; cooling and sizing, opening die to obtain a product. According to the intermittent micro-foaming injection molding equipment and the intermittent micro-foaming injection molding process disclosed by the invention, certain production efficiency is achieved, the micro-foaming injection molding can be controlled easily, and the complexity degree of the equipment transformation can be lowered.

Disclosed is an outer tube of fireworks with bottom, whose characteristics is that its main component are haulm fiber, glass fiber, calcium sulfate, light filler, cement of high level and bond. It is formed by once overall stamp by special machine and natural drying, the product has U-typed bottom, a layer of kraft paper enclosing the outer wall of tube, and its appearance, size and length can be ordered by the size needs of different fireworks products. The invention has the advantages of abundant raw material, advanced technology, excellent chemical and physical stability, stable shape, resistance to humidity, high intension and notable safety, which can be widely used in outer tube of various fireworks products.

The invention discloses a multi-station digital pasting system for a lost foam and a pasting method of the multi-station digital pasting system. The multi-station digital pasting system mainly comprises a main rack, numerical control sliding table devices, a pasting system, a transverse movement driving system, a lifting rotating table, a main pouring gate pasting position changing device and an electric system connected with all the parts; by using the system, continuous pasting of a plurality of stations and automatic pouring gate pasting can be realized at one time, and corresponding moulds can be automatically switched according to the combination demand of templates to mount different templates; and compared with the prior art, the pasting system and method are high in automation degree and are used for reducing the cost while reducing the labor intensity of workers, and not only improving the pasting quality of the templates of the lost foam, but also remarkably increasing the pasting efficiency of the templates so as to have a considerable promotional value in the current trend of enterprise technological innovation transformation.

A polyester resin composition characterized by having a glass transition temperature (Tg) of 83 DEG C or higher and a melting point (Tm) of 230 DEG C or lower and having controlled crystallizability. This polyester has excellent surface thermoformability. In particular, the surface of the polyester can be formed into various shapes, e.g., a shape having ultrahigh fineness or a high aspect ratio. The polyester is for use as a thermoformed optical film excellent in heat resistance and transparency.

The invention discloses vanadium dioxide ink for inkjet printing. The vanadium dioxide ink is prepared from the following components: nano vanadium dioxide powder, a dispersing agent, a bonding agent and a diluent, wherein the diluent is a mixed solution of dimethylbenzene and ethyl acetate or a mixed solution of the dimethylbenzene and butyl acetate. A preparation method of the vanadium dioxide ink disclosed by the invention comprises the following steps: carrying out mixed ultrasonic dispersion on the nano vanadium dioxide powder and the diluent to obtain vanadium dioxide dispersing liquid; carrying out mixed dispersion and grinding on the vanadium dioxide dispersing liquid and the dispersing agent in a sand mill; then adding the bonding agent, and continuously grinding in the sand mill until the materials are uniformly mixed, thus obtaining the vanadium dioxide ink for the inkjet printing. According to the vanadium dioxide ink disclosed by the invention, by regulating and controlling the particle size, stable dispersion, viscosity and surface tension of the nano vanadium dioxide ink, the vanadium dioxide ink suitable for the inkjet printing is successfully prepared; according to the nano vanadium dioxide ink disclosed by the invention, the smoothness of an inkjet printing process is ensured, a liquid drop shape can be formed during printing, a good printing effect is realized, and the requirement on film forming property of a printer is met.

The invention discloses a continuous basalt fiber-reinforced halogen-free flame-retardant nylon material and a preparation method thereof. The continuous basalt fiber-reinforced halogen-free flame-retardant nylon material is prepared by mainly mixing continuous basalt fiber-reinforced nylon master batches and halogen-free flame-retardant master batches, wherein each continuous basalt fiber-reinforced nylon master batch mainly comprises a continuous basalt fiber, nylon resin and a silane coupling agent; and each halogen-free flame-retardant master batch mainly comprises polyolefin resin, a halogen-free fire retardant and a flame-retardant synergist. The product obtained by mixing the continuous basalt fiber-reinforced nylon master batches and the halogen-free flame-retardant master batches in proportion has the advantages of good fire-retardant property, excellent mechanical property, simple preparation process, low cost, environmental friendliness and wide market application prospect and meets the requirements for industrialized production, green and environmental friendliness.

The invention relates to a feed for cattle, and in particular relates to a composite traditional Chinese herbal medicinal premix feed for dairy cattle. The feed comprises the following raw materials in parts by weight: 20-40 parts of dairy cattle composite vitamin, 3-5 parts of astragalus, 5-8 parts of aloe, 4-6 parts of Chinese angelica, 8-12 parts of schisandra chinensis, 6-9 parts of eucommia ulmoides, 4-7 parts of scutellaria baicalensis, 5-8 parts of raspberry, 7-10 parts of red peony root, 60-100 parts of dairy cattle mineral elements, 8-12 parts of VE (vitamin E), 9-15 parts of bacillus licheniformis, 2-5 parts of zinc methionine, 4-8 parts of chromium yeast, 8-10 parts of selenium yeast, 3-6 parts of phytase, 160-220 parts of edible salt, 180-220 parts of calcium carbonate, 150-200 parts of monocalcium phosphate and 80-300 parts of zeolite powder. The premix feed provided by the invention can completely replace antibiotics and chemical synthetic medicines in the feed to avoid medicine residue in milk, is safe and effective, does not have residues or drug-resistance, and is in accordance with the requirement on production of green feed and green livestock products.

The invention relates to a method for preparing a modified liquid metal soap thermal stabilizer through potassium ion characteristic doping, belonging to the technical fields of fine chemical engineering and high molecular material application. The invention researches and develops a potassium-ion-doped PVC (polyvinyl chloride) liquid metal soap thermal stabilizer. The synthesis method of the thermal stabilizer comprises the following steps: adding composite organic acid into a three-neck flask, stirring, and heating to 90-100 DEG C; adding solid potassium hydroxide in batches; after the reaction is complete, performing reduced-pressure distillation to dewater; cooling to 80 DEG C, then adding a liquid metal soap and a solvent, and continuously stirring to react; and finally, performing reduced-pressure filtration to obtain a yellowish transparent oily liquid. By utilizing the fact that metal potassium salt has fine long-term thermal stability, produces an obviously strong inhibition effect on zinc burning and has obvious cooperativity with other metal salt, the potassium-ion-doped PVC liquid metal soap thermal stabilizer is directly prepared through a solid-liquid one-step reaction method. The thermal stabilizer has the advantages of low cost, no toxicity, environment friendliness, simple process, fine performance, light appearance color and the like, and is easy to popularize and apply.

The integral heald wire for jacquard loom as yarn guide has members in two ends for connection with other parts and one mail eye in the middle part. One of the connecting member has small hole and the other has thread. Warp is threaded via the mail eye to form one opening with the elevated heald wire, so that the weft introduced into the opening perpendicularly to the warp can be interwoven with the warp. The section with mail eye of the heald wire is turned by one 0-55 deg angle to the other sections. The making process of the integral heald wire includes the steps of rolling, punching, polishing and injection molding. The integral heald wire has no rust, no contamination to the fabric, long service life and other advantages.

The invention relates to a method for measuring atmospheric pressure and height by a hand-held mobile phone. A minitype atmospheric sensor capable of measuring atmospheric pressure is embedded into an internal circuit of the mobile phone, and is driven by the power of the mobile phone; an atmospheric pressure and height processing program is loaded to a CPU of the mobile phone, the atmospheric data measured in real time is received from the atmospheric sensor, the corresponding height data is calculated, and the atmospheric pressure and height processing functions are realized through the communication between the CPU of the mobile phone and a communication interface and through the operations of the display screen and the keyboard of the mobile phone. According to the method of the invention, the functions of measuring atmospheric pressure, measuring height, displaying and alarming are added to the mobile phone. Under the control of the atmospheric pressure and height processing program, an atmospheric pressure and height displaying area is established at a specific position of the display screen of the mobile phone, and the value in the atmospheric pressure and height displaying area is updated continuously so that people can know the atmospheric pressure and height values on the side and on the spot at any place and any time.

The invention provides a method for measuring the negative clearance of a hub bearing unit. The method comprises the following steps that S1, a workpiece small ring is fed upwards into a positive-clearance workpiece operation table; S2, an outer flange of the workpiece is clamped, the small ring is pushed by the lower-push spring, the workpiece is moved upwards away from the positive-clearance workpiece operation table, and a measured data is a0; S3, an inner flange is jacked to an appropriate position; S4, a rotating mechanism drives the inner flange and the outer flange of the workpiece to rotate for 1-3 cycles, a measured data is a1, and a1 minus a0 is a positive clearance value Ga; S5, the workpiece is conveyed to a negative-clearance workpiece operation table; S6, the workpiece is jacked till the upper surface of the workpiece is in contact with a negative-clearance upper tool, and a measured data is b0; and S7, the workpiece is continuously jacked upwards to the position b1, b0 minus b1 equals the axial displacement L of the small ring, the displacement L is Ga plus d, d is a negative-clearance value, if L is less than Ga, the small ring is replaced, and if L is larger than Ga, the workpiece is qualified and discharged, and the steps S1 to S7 are repeated. The method is high in automation degree and capable of accurately measuring the positive clearance value of the bearing.