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42results about How to "Wide range of application conditions" patented technology

Posture and moving track positioning system and method of robot grabbing online workpiece

The invention discloses a posture and moving track positioning system and method of robot grabbing an online workpiece. The device comprises a camera support, an industrial camera, the tested workpiece, a workpiece conveying belt, a tail end executer, a robot system, a workbench, an image processor and the like. The method comprises the steps that a depth positioning model of a plane point in an absolute coordinate system in the vertical direction, a depth positioning model of a space point in the absolute coordinate system in the vertical direction, an X-axis positioning model of the plane point in the absolute coordinate system in the horizontal direction and an X-axis positioning model of the space point in the absolute coordinate system in the horizontal direction are established, three-dimensional coordinates of imaging points in all the cameras can be solved through combination of the priori knowledge of the workpiece, accordingly, and a robot can be guided to adopt the accurate tail end executer posture and movement track to intelligently grab the workpiece accurately. The posture and moving track positioning system and method have the advantages that the grabbing precision is high, the structure is simple, and cost is low.
Owner:SOUTH CHINA UNIV OF TECH

Application of carboxylic acid metal salt of tetrahydrophthalic anhydride as nucleating agent for polypropylene beta crystal form

The invention provides an application of a carboxylic acid metal salt of tetrahydrophthalic anhydride as a nucleating agent for a polypropylene beta crystal form. By adopting the carboxylic acid metal salt of tetrahydrophthalic anhydride as the nucleating agent, the generation of beta crystal form polypropylene can be induced efficiently; as tested by differential scanning calorimetry (DSC), the content of a beta crystal form is up to 86-97.7 percent; after nucleation modification by using the carboxylic acid metal salt of the tetrahydrophthalic anhydride, the punching strength of polypropylene is increased by 5-8 times, the heat deflection temperature is increased greatly, and high mechanical property is achieved; and moreover, the carboxylic acid metal salt has the advantages of chemical stability, high dispersity, coloring resistance, capability of improving the working quality of a product and wide application range in the field of materials special for polypropylene.
Owner:GCH TECH

Hydrolytic agent for treating wastewater containing tetrafluoroborate and application thereof

The invention provides a hydrolytic agent for treating wastewater containing tetrafluoroborate and application thereof. The hydrolytic agent consists of at least one aluminum salt and at least one water-soluble cerate. The aluminum salt is selected from alum, aluminum chloride or hydrate of the aluminum chloride, aluminum sulfate or hydrate of the aluminum sulfate, and preferable the alum; and the water-soluble cerat is selected from cerium nitrate, cerous sulfate and cerium chloride, and the preferable the cerium chloride. The hydrolytic agent disclosed by the invention is used for treating the wastewater containing tetrafluoroborate, thus the consumption of the aluminum salt contained in the hydrolytic agent can be reduced on the one hand and the concentration of the tetrafluoroborate in the hydrated wastewater can be reduced on the other hand, which provide advantages for subsequent treatment. After the wastewater is continuously precipitated by lime milk or CaOH2, the concentration of the tetrafluoroborate and the concentration of fluorinion are respectively reduced and reach the discharge stand, and thus the etrafluoroborate and the fluorinion can be directly discharged and further the subsequent treatment flow is shortened.
Owner:CHINA PETROLEUM & CHEM CORP

Large-cylinder-diameter gas engine turbulent jet ignition system, gas supply system and method

The invention discloses a large-cylinder-diameter gas engine turbulent jet ignition system, a gas supply system and method, and the turbulent jet ignition system comprises a pre-combustion chamber which forms a spatial umbrella-shaped distributed ignition source in a main combustion chamber through a plurality of fluid passages; a sparking plug which is arranged on the pre-combustion chamber and used for igniting mixed gas in the pre-combustion chamber; a pre-combustion chamber gas injection valve which is connected with the pre-combustion chamber through a gas conveying pipeline and a one-way valve and used for injecting auxiliary gas into the pre-combustion chamber in a timed and quantitative mode. The gas supply system comprises a controller and the turbulent jet ignition system, and the controller is used for controlling gas supply of the pre-combustion chamber and fuel supply of the gas inlet channel of the main combustion chamber. Accurate stratified combustion can be formed between the pre-combustion chamber and the main combustion chamber; turbulent jet flow generated by mixed combustion in the pre-combustion chamber can form umbrella-shaped ignition source distribution in the main combustion chamber, the flame propagation distance is effectively shortened, and the combustion speed of mixed gas in the main combustion chamber is increased.
Owner:SHANDONG UNIV

Angle adjustable multi-degree of freedom polishing machine polishing head mechanism

The invention discloses an angle adjustable multi-degree of freedom polishing machine polishing head mechanism. A power output shaft of a power output mechanism is coaxially provided with a driving helical gear. A middle helical gear frame is movably arranged on a power output shaft in a sleeving manner. The upper part of a lower support is hinged to the power output shaft in a sleeving manner. Anupper disk body is fixed to the front end of the upper part of the lower support. A middle helical gear is hinged to the lower support of the middle helical gear frame. The middle helical gear is located below the driving helical gear and is engaged with helical teeth of the driving helical gear. The two ends of a tail end helical gear frame are both provided with notches. The tail end helical gear frame is hinged to the middle helical gear frame through an angle limiting device. The tail end helical gear frame is provided with a tail end helical gear in a hinged manner. The tail end helicalgear is coaxially and fixedly connected with a polishing disk. The tail end helical gear is engaged with helical teeth of the middle helical gear. By means of the angle adjustable multi-degree of freedom polishing machine polishing head mechanism, the tail end of a polishing machine can be rotated by 360 degrees in the radial direction, the front-back angle adjusting range is up to 120 degrees, the angle adjustable multi-degree of freedom polishing machine polishing head mechanism can adapt to complex working environments and is more convenient to use and flexible, and the working efficiency is improved.
Owner:ZHEJIANG UNIV

Assembled ecological slope protection and construction method thereof

The invention relates to the technical field of building construction, in particular to an assembled ecological slope protection and a construction method thereof. The assembled ecological slope protection includes foundation blocks, large blocks, medium blocks, small blocks, coping blocks and slope protection blocks. According to the assembled ecological slope protection and the construction method, the ecological slope protection is formed by combining the foundation blocks, the large blocks, the medium blocks, the small blocks, the coping blocks and the slope protection blocks, meanwhile, the foundation blocks, the large blocks, the medium blocks, the small blocks, the coping blocks and the slope protection blocks can be overlapped arbitrarily, and the application conditions are wide. By means of the slope protection blocks, the sliding distance of a guide rail protruding block in a limit chute is adjusted, the distance between the slope protection blocks is further adjusted, the hole rate is controlled, and the condition that slope repairing is very disadvantageous when a conventional interlocking block slope protection soil body has sedimentation is avoided; and drainage grooves are formed in the bottoms of the slope protection blocks, so that certain gaps exist between the slope protection blocks and original soil, the extension range of a plant root system can be enlarged, and a good ecological protection effect is achieved.
Owner:湖南全水生态科技有限公司

Hydrolytic agent for treating wastewater containing tetrafluoroborate and application thereof

The invention provides a hydrolytic agent for treating wastewater containing tetrafluoroborate and application thereof. The hydrolytic agent consists of at least one aluminum salt and at least one water-soluble cerate. The aluminum salt is selected from alum, aluminum chloride or hydrate of the aluminum chloride, aluminum sulfate or hydrate of the aluminum sulfate, and preferable the alum; and the water-soluble cerat is selected from cerium nitrate, cerous sulfate and cerium chloride, and the preferable the cerium chloride. The hydrolytic agent disclosed by the invention is used for treating the wastewater containing tetrafluoroborate, thus the consumption of the aluminum salt contained in the hydrolytic agent can be reduced on the one hand and the concentration of the tetrafluoroborate in the hydrated wastewater can be reduced on the other hand, which provide advantages for subsequent treatment. After the wastewater is continuously precipitated by lime milk or CaOH2, the concentration of the tetrafluoroborate and the concentration of fluorinion are respectively reduced and reach the discharge stand, and thus the etrafluoroborate and the fluorinion can be directly discharged and further the subsequent treatment flow is shortened.
Owner:CHINA PETROLEUM & CHEM CORP

Winnowing machine and winnowing method thereof

The invention discloses a winnowing machine and a winnowing method thereof and belongs to the field of crop seed impurity removal machinery. The winnowing machine comprises a draught fan and an impurity collection box and further comprises a winnowing component, a feeding hopper and a discharging hopper, wherein the winnowing component is arranged below the feeding hopper; the discharging hopper is located below the winnowing component; the draught fan is located at the left side of the winnowing component; and the impurity collection box is located at the right side of the winnowing component. The winnowing machine further comprises flying dust adsorption equipment. The flying dust adsorption equipment comprises an upper air opening, a flying dust filter bag and a flying dust collection hopper in sequence from top to bottom. The impurity collection box comprises filter plates, a heavy impurity hopper, a light impurity hopper and a flying dust outlet. The winnowing component is arranged at the left side of the upper portion of the impurity collection box. The upper portion of the impurity collection box is formed by combining the filter plates. The heavy impurity hopper and the light impurity hopper are arranged on the lower portion of the impurity collection box in sequence from left to right. The flying dust outlet is formed in the right side of the upper portion of the impurity collection box. The flying dust outlet communicates with the flying dust adsorption equipment. By means of the winnowing machine, impurities in grains can be removed; mildewed or imperfect seeds are separated from good seeds which are plump in grain; and the seeds can be stored conveniently and sold and processed conveniently at the later stage.
Owner:JIANGSU HENGKANG ELECTRICAL

Preparation method for porous NiO nano slice catalyst for catalyzing and decomposing N2O at low temperature

ActiveCN108144616AHigh catalytic activityExcellent low temperature catalytic performanceNitrous oxide captureGas treatmentFiltrationDecomposition
The invention relates to the technical field of N2O air pollution control, in particular to a preparation method for a porous NiO nano slice catalyst for catalyzing and decomposing N2O at a low temperature. The preparation method comprises the following steps of adding a sodium hydroxide solution into a nickel chloride solution while continuously stirring, performing hydrothermal reaction, and performing steps such as suction filtration, drying and roasting, thereby obtaining the porous NiO nano slice catalyst. The prepared catalyst has an excellent pore structure and a high specific surface area, and shows excellent low-temperature catalytic performances; the preparation method has the advantages of being simple and convenient to operate, not adding any additive, being low in cost, beingenvironmentally friendly and the like; when a roasting temperature is 300 DEG C, the specific surface area is 192m<2>g<-1>, N2O can be completely decomposed into N2 and O2 at a temperature of 300 DEGC, a N2O decomposition rate is 50% at a temperature of 230 DEG C, N2O can be efficiently catalyzed and decomposed, and the application prospect is wide.
Owner:TAIYUAN UNIV OF TECH

Piston sealing structure

The invention provides a piston sealing structure, and particularly relates to a piston sealing structure for a hydraulic cylinder. The piston sealing structure is mainly used for the sealing between a piston and a cylinder barrel. The piston sealing structure comprises the piston, the cylinder barrel and a sealing groove, wherein the piston in sliding fit with the cylinder barrel is mounted on a piston rod, and sealing is formed between a sealing element on the piston and the cylinder barrel. A sealing device is composed of a supporting ring, a dirt containing ring, a Gely ring, a dirt containing ring and a supporting ring, starting force is small, guide length is increased, large eccentric loads can be borne, and machining of the matched groove meets the domestic manufacturing technological level better. The sealing structure is simple, low in cost, good in seating effect, capable of bearing the large eccentric loads and wide in application working condition.
Owner:赵霞

Cement sheath eccentric rolling extrusion crushing tool for long-service-life auxiliary sleeve recovery

A long-service-life cement sheath eccentric rolling extrusion crushing tool assisting in casing recycling comprises a main shaft, an upper roller, a piston, a torque clamping sleeve, a movable roller, a lower roller, bearings, a centralizer and a lower connector, the movable roller is installed on the main shaft through the two sets of bearings and the torque clamping sleeve under the action of the centralizer, and the movable roller is located between the upper roller and the lower roller; an upper roller and a lower roller are mounted on the main shaft through two groups of bearings, a lower joint is mounted at the bottom of the main shaft in a threaded connection manner, a cylindrical water nozzle is formed in the lower joint, the internal throttling pressure difference of the tool can be controlled by adjusting the diameter of the cylindrical water nozzle, the total lateral thrust of a piston is controlled, and the movable roller'rolls' a sleeve in a rolling contact manner; the process is similar to the road surface rolled by automobile wheels, the radial damage width of the damage of the cement sheath is gradually increased under the upward pulling action of a drilling machine until the whole expected underground well cementation cement is completely damaged, and the method has positive reference and popularization value for improving the casing recovery operation mode.
Owner:四川中能数智科技发展有限公司

Steering bearing dynamic durability test device

The invention relates to the technical field of bearing tests, and particularly discloses a steering bearing dynamic durability test device. The steering bearing dynamic durability test device at least comprises a test assembly, a deflection assembly, a main driving assembly, an axial loading assembly and a radial loading assembly, wherein the test assembly at least comprises a test shaft and a test base for installing a test bearing, and a test bearing installation cavity is formed in the test base. In the steering bearing dynamic durability test device, through utilizing the axial loading assembly, the radial loading assembly and the deflection assembly, an axial load and a radial load are simultaneously applied to the test bearing and the test bearing generates a deflection angle of anouter ring relative to an inner ring so that the steering bearing dynamic durability test device accords with a work condition environment of a steering bearing, and a dynamic endurance test result ismore accurate and reliable; and meanwhile, the steering bearing dynamic durability test device has the technical advantages of wider applicable bearing range and higher universality.
Owner:杭州盾航轴承技术有限公司

Solar combiner box data acquiring and processing module supportive to multiple communication formats

The invention provides a solar combiner box data acquiring and processing module supportive to multiple communication formats. The solar combiner box data acquiring and processing module supportive to the multiple communication formats is capable of acquiring and processing various operating data and related environmental parameters of devices in a solar combiner box, and converting the data into various communication protocol formats according to operating needs, so that needs of various control systems can be met. Therefore, data acquiring and processing efficiency is improved, setting and operation of the systems are more simplified, and the solar combiner box data acquiring and processing module supportive to the multiple communication formats enables the combiner box to be suitable for wider application conditions.
Owner:SUZHOU CHANGFENG AUTOMATION TECH

A grinding head mechanism of multi-degree-of-freedom polishing machine with adjustable angle

ActiveCN108927729BIncrease freedomRealize vertical steering functionGrinding machinesGrinding headsPolishingGear wheel
The invention discloses an angle adjustable multi-degree of freedom polishing machine polishing head mechanism. A power output shaft of a power output mechanism is coaxially provided with a driving helical gear. A middle helical gear frame is movably arranged on a power output shaft in a sleeving manner. The upper part of a lower support is hinged to the power output shaft in a sleeving manner. Anupper disk body is fixed to the front end of the upper part of the lower support. A middle helical gear is hinged to the lower support of the middle helical gear frame. The middle helical gear is located below the driving helical gear and is engaged with helical teeth of the driving helical gear. The two ends of a tail end helical gear frame are both provided with notches. The tail end helical gear frame is hinged to the middle helical gear frame through an angle limiting device. The tail end helical gear frame is provided with a tail end helical gear in a hinged manner. The tail end helicalgear is coaxially and fixedly connected with a polishing disk. The tail end helical gear is engaged with helical teeth of the middle helical gear. By means of the angle adjustable multi-degree of freedom polishing machine polishing head mechanism, the tail end of a polishing machine can be rotated by 360 degrees in the radial direction, the front-back angle adjusting range is up to 120 degrees, the angle adjustable multi-degree of freedom polishing machine polishing head mechanism can adapt to complex working environments and is more convenient to use and flexible, and the working efficiency is improved.
Owner:ZHEJIANG UNIV

A method for detecting the quality of geological exploration drilling

ActiveCN111462037BOverall Drilling Quality EvaluationObjective drilling quality evaluationImage enhancementImage analysisLithologyEvaluation result
The invention relates to a method for detecting the quality of geological exploration boreholes, which includes customizing exploration strata comparison items according to the requirements of exploration technology, further establishing and training evaluation models; opening inspection holes within the set range of geological exploration boreholes to be inspected, and conducting Image acquisition, identifying the filling lithology distribution, if it is different from the filling lithology distribution of the geological exploration borehole, then it is determined that the evaluation result of the geological exploration borehole is unqualified; if the same: obtain the inspection hole for each The data of each comparison item; the data of each comparison item of the inspection hole and the geological exploration drilling hole are input into the evaluation model for evaluation, and the evaluation result is given. The invention can effectively improve the efficiency of drilling quality detection, can give a comprehensive, objective and quantitative fine evaluation of drilling quality, has strong adaptability, wide application conditions, stable performance, low cost, and has good promotion and application prospects And objective social and economic benefits.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP +2

A kind of winnowing machine and winnowing method thereof

The invention discloses a winnowing machine and a winnowing method thereof and belongs to the field of crop seed impurity removal machinery. The winnowing machine comprises a draught fan and an impurity collection box and further comprises a winnowing component, a feeding hopper and a discharging hopper, wherein the winnowing component is arranged below the feeding hopper; the discharging hopper is located below the winnowing component; the draught fan is located at the left side of the winnowing component; and the impurity collection box is located at the right side of the winnowing component. The winnowing machine further comprises flying dust adsorption equipment. The flying dust adsorption equipment comprises an upper air opening, a flying dust filter bag and a flying dust collection hopper in sequence from top to bottom. The impurity collection box comprises filter plates, a heavy impurity hopper, a light impurity hopper and a flying dust outlet. The winnowing component is arranged at the left side of the upper portion of the impurity collection box. The upper portion of the impurity collection box is formed by combining the filter plates. The heavy impurity hopper and the light impurity hopper are arranged on the lower portion of the impurity collection box in sequence from left to right. The flying dust outlet is formed in the right side of the upper portion of the impurity collection box. The flying dust outlet communicates with the flying dust adsorption equipment. By means of the winnowing machine, impurities in grains can be removed; mildewed or imperfect seeds are separated from good seeds which are plump in grain; and the seeds can be stored conveniently and sold and processed conveniently at the later stage.
Owner:JIANGSU HENGKANG ELECTRICAL

Bilge well for ship

The invention discloses a bilge well for a ship. The bilge well for the ship comprises a well body and a well bottom plate which are integrally welded. A well cover covers the upper end of the well body. The well body is spliced by an upper well body and a lower well body. The upper and lower well bodies are cylinder-shaped steel pipes and are fixedly connected in a threaded manner. The well body, the well cover and the well bottom plate are prefabricated according to set sizes and are assembled in a cabin. An opening is formed in the bottom of the cabin. The upper end of the well body is welded with the bottom of the cabin. The diameter of the upper opening of the well body is larger than the inner diameter of the opening. The lower end of the well body is welded with the well bottom plate. The bilge well has the advantages that the manufacturing process of the bilge well is simplified by designing the well body into the cylindrical shape; labor hour is shortened and the efficiency is improved by prefabricating the bilge well and field splicing; the bilge well is convenient to mount, maintain and demount and widely applicable by the threaded connection; the bilge well is applicable to special working space by using the oblique lower well body.
Owner:SHANGHAI SHIPYARD

Method for purifying zinc sulfate electrolyte by using metal aluminum powder

The invention relates to a method for purifying zinc sulfate electrolyte by using metal aluminum powder. The method is characterized in that metal aluminum powder is used as a main purifying agent, or a copper-containing or antimony-containing substance is added as an auxiliary purifying agent; firstly, the aluminum powder is activated in an acidic or alkaline solution with a certain pH value; a proper amount of the purifying agent is added into a zinc sulfate solution to be purified with certain acidity and temperature to be fully mixed and subjected to complete reaction in a certain atmosphere, and liquid-solid separation is carried out; and the zinc electrolyte with qualified impurity metal ions and high-grade leaching residues containing valuable metals such as Ni, Co, Cu and Cd are obtained. According to the method, the technology is simple, the metal aluminum powder with the potential more negative than that of a zinc powder (traditional purifying agent) standard electrode is used as the purifying agent, the purifying technological process can be shortened, the using amount of the purifying agent is greatly reduced, and the slag phase where impurity valuable metal is easy to recover is produced.
Owner:KUNMING UNIV OF SCI & TECH

A kind of traffic signal light fault intelligent detection, alarm system and method

The invention discloses an intelligent detection and alarm system for traffic signal lights, which includes a signal light working state collector, a signal light controller working state collector, a central server / wireless mobile data transmitter, and the signal light working state collector is connected to the signal light to collect the current working state of the signal light status, and transmit it to the working status collector of the signal lamp controller; the working status collector of the signal lamp controller is set between the signal lamp and the connection line of the signal lamp controller, collects the output signal of the signal lamp controller, and compares it with the current working status of the received signal lamp; The working state collector of the signal light controller is connected to the central server through the data communication network, and the fault information is sent to the user after processing, or the working state collector of the signal light controller is connected with the wireless mobile data transmitter, and the fault information is sent to the user. The invention improves the accuracy and real-time performance of signal lamp fault detection and alarm, enhances detection means, and reports signal lamp fault more comprehensively.
Owner:HANGZHOU YUNZHENG TECH

Heavy smoke type smoke bomb used for open occasion insects killing and disinfection

InactiveCN101984811BWill not cause poisoningGood control effectBiocideFungicidesCalcium bicarbonateSmoke bomb
The invention provides a heavy smoke type smoke bomb used for open occasion insects killing and disinfection, relating to smoke bomb used for insects killing and disinfection. The smoke bomb is composed of the following raw materials by weight proportion: 3-40% of main agent, 97-60% of smoke generating agent; wherein the smoke generating agent comprises the following raw materials by parts by weight: 10-30 parts of sodium nitrate, 20-60 parts of calcium bicarbonate, 5-35 parts of wood powder and 10-30 parts of iodoform; and when in preparation, the main agent and the smoke generating agent are prepared into a smoke bomb by adopting the conventional method. The pesticide of the invention has the following beneficial effects: 1, application method is simple, time and labour are saved, working efficiency is high, and smoke can be emitted out while half hour is utilized in the morning and evening; 2, no tool or medicated instrument is required; 3, safety is achieved, namely an operating person can not be poisoned as the operating person does not contact the pesticide directly when placing and igniting; 4, application condition is wide, the main agent can be various high efficiency low toxicity technical materials used for insects killing and disinfection, and the bomb can be applied to various occasions requiring insects killing and disinfection.
Owner:刘保国

Power generation and energy-saving system and method based on coupling and induction

The invention discloses a power generation and energy-saving system and method based on coupling and induction and belongs to the technical field of power generation circuits. The power generation andenergy-saving system based on coupling and induction comprises a first winding coil, a second winding coil, a diode, a triode, a rectifier bridge and a rechargeable battery; the first winding coil and the second winding coil adopt a double-wire parallel winding mode; the upper end of the first winding coil is connected with the positive pole of a power source; the lower end of the first winding coil is connected with the collector of the triode; the emitter of the triode is connected with the negative pole of the power source; the positive pole of the diode is connected in parallel with the lower end of the winding coil; the negative pole of the diode is connected with the positive pole of the power source; two ends of the second winding coil are connected with the alternating-current input end of the rectifier bridge; and the direct-current output end of the rectifier bridge is connected with the rechargeable battery. The system can be applied to all equipment with winding coils inside which have power-on and power-off functions; the system is especially suitable for the field of motors; the application conditions of the system are extensive; and the energy-saving effect of the system is obvious.
Owner:邢磊

Method for purifying zinc sulfate electrolyte by using manganese metal powder

The invention relates to a method for purifying zinc sulfate electrolyte by using manganese metal powder. The method is characterized in that metal manganese powder is used as a main purifying agent, or a copper-containing or antimony-containing substance is added as an auxiliary purifying agent; a certain amount of a purifying agent is added into a zinc sulfate solution to be purified at proper temperature and acidity in a certain atmosphere to be fully mixed and subjected to complete reaction, and then liquid-solid separation is carried out; and the concentration of the zinc sulfate solution which is qualified compared with that of electropositive impurity metal ions, and high-grade leaching residues containing valuable metals such as Cu, Cd, Co and Ni are obtained. According to the method, the technology is simple, the metal manganese powder with the potential more negative than that of a zinc powder (traditional purifying agent) standard electrode is used as the purifying agent, the purifying technological process can be shortened, the using amount of the purifying agent is greatly reduced, and the slag phase where valuable metal is easy to recover is produced.
Owner:KUNMING UNIV OF SCI & TECH

Bullet support and bullet head separating device

The invention discloses a bullet support and bullet head separating device. The bullet support and bullet head separating device comprises a launching tube fastener detachably connected to a launching tube, and a bullet support separating piece detachably connected to the launching tube fastener. The bullet support separating piece separates a bullet support and a bullet head of a test bullet shot out of the tube, and meanwhile the bullet head is allowed to leave the bullet support separating piece. The bullet support and bullet head separating device is simple in structure, convenient to install, easy to carry and suitable for test bullets of various sizes.
Owner:中国兵器装备集团兵器装备研究所

Preparation method for absorbent for smoke decarburization

The invention discloses a preparation method for an absorbent for smoke decarburization. The preparation method comprises the following steps: using a boron nitride nano-sheet / montmorillonoid intercalation composite material, preparing a polysiloxane crosslinking compound on the surface of the composite material, and uniformly mixing with fluorite powder, calcium carbonate, sodium silicate and silicon nitride, die-filling, degassing, and compression-forming, drying an obtained rough body and placing in a muffle furnace for sintering, to obtain a porous carrier; adding ethyl succinate to diethyl carbonate, stirring and uniformly mixing, to obtain mixed solution B; adding the prepared porous carrier to the mixed solution B, soaking for 15 h, centrifugally removing the unadsorbed mixed solution after soaking, and finally drying the porous carrier adsorbed with the mixed solution, to obtain the compound absorbent. The prepared absorbent by the method has the large absorptive capacity, and is capable of effectively removing carbon dioxide in the smoke.
Owner:DONGGUAN LIANZHOU INTPROP OPERATION MANAGEMENT CO LTD

A kind of composite modifier of starch/polyvinyl alcohol composite material

The invention discloses a composite modifier for a starch / polyvinyl alcohol composite material. The composite modifier comprises an inorganic metal salt and a nonionic surfactant. As a plasticizer, the inorganic metal salt improves the mechanical property of the starch / polyvinyl alcohol composite material. On one side, the nonionic surfactant has a synergic plastifying effect together with the inorganic metal salt, and on the other side, the nonionic surfactant improves the hydrolytic resistance of the starch / polyvinyl alcohol composite material; the addition amount of the inorganic metal salt and the content of a Halogen atom in a final product are reduced by virtue of the addition of the nonionic surfactant, so that the starch / polyvinyl alcohol composite material obtained is more environment-friendly. The composite modifier is suitable for the preparation of the starch / polyvinyl alcohol composite material, and the starch / polyvinyl alcohol composite material with excellent properties is prepared.
Owner:FUZHOU UNIV

Winnowing piece

The invention discloses a winnowing piece, and belongs to a crop seed impurity removal machine. The winnowing piece comprises winnowing plates; winnowing holes are formed in the winnowing plates; thewinnowing holes in every two vertically adjacent winnowing plates are mutually staggered in position; the winnowing plates comprise the winnowing holes, lower plates and middle plates; the middle plates and the lower plates are sequentially connected; the winnowing holes are evenly formed in the middle plates; a separating strip is arranged between every two adjacent winnowing holes in each middleplate; the winnowing holes in the middle plates are the same in size and shape, and the distances between the adjacent winnowing holes are the same, that is, the separating strips are the same in size and shape; the included angle between the plane where the middle plates on the winnowing plates of the winnowing piece are located and the direction of wind blown by a fan is an acute angle; the included angle between the plane where upper plates on the winnowing plates of the winnowing piece are located and the plane where the middle plates are located is an obtuse angle; the winnowing plates of the winnowing piece are mutually in parallel; and the distances between the vertically adjacent winnowing plates are the same, and the winnowing holes in every two vertically adjacent winnowing plates are mutually staggered in position. According to the winnowing piece, impurities in cereals can be removed, and moldy or non-plump seeds are removed.
Owner:马鞍山市博望区久保机械配件加工厂
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