摘要：【中文】本发明属于实验实训装置技术领域，尤其云教学实验实训装置，包括实训台和支撑实训台的伸缩式支撑腿，所述实训台为中空结构，且实训台的顶面设置有显示器开口部，实训台的内底壁固定有升降装置，升降装置的上端固定有安装块，教学终端的内部设置有中央处理器、储存模块、蓝牙模块、网络模块和录音模块，中央处理器与储存模块、蓝牙模块、触摸显示模块、面部识别模块、摄像模块、扬声器模块、网络模块和录音模块连接；本发明采用功能一定的教学终端设备，取消键盘等外设，直接用触摸显示模块来实现操控，而且将教学终端的位置限制在实训台上，避免用户拿着教学终端做其他事情，从而督促用户专心学习，获取教学视频内部知识，从而可以提高自己。 【EN】The invention belongs to the technical field of experimental practical training devices, in particular to a cloud teaching experimental practical training device which comprises a practical training platform and telescopic supporting legs for supporting the practical training platform, wherein the practical training platform is of a hollow structure, a display opening part is arranged on the top surface of the practical training platform, a lifting device is fixed on the inner bottom wall of the practical training platform, an installation block is fixed at the upper end of the lifting device, a central processing unit, a storage module, a Bluetooth module, a network module and a recording module are arranged in a teaching terminal, and the central processing unit is connected with the storage module, the Bluetooth module, a touch display module, a face recognition module, a camera module, a loudspeaker module, the network module and the recording; the teaching terminal equipment with certain functions is adopted, peripheral equipment such as a keyboard and the like are omitted, the touch display module is directly used for realizing control, the position of the teaching terminal is limited on the practical training platform, and a user is prevented from holding the teaching terminal to do other things, so that the user is urged to learn with concentration, the internal knowledge of the teaching video is acquired, and the self-learning can be improved.

摘要：【中文】本发明公开了一种铁丝镀锌生产线及无酸镀锌方法，该生产线包括依次连接的放线机、助镀槽、高频感应加热装置、锌锅、气体抹试装置、水冷装置和收线机，在高频感应加热装置和锌锅之间设置有前定心调整辊，在锌锅和收线机之间设置有后定心调整辊，锌锅为水平溢流式双锌锅结构，锌锅的槽体上平面上至少安装有一个阳极极板，阳极极板与电源正极连接，锌锅底部通过回水管和进水管与位于锌锅下方的镀锌储液缸连接。本发明无氰、无酸洗，循环水不排放，清洁环保，可取代传统的镀锌铁丝设备，节约用水，对环境无污染，降低了工人的劳动强度，使工人摆脱了强酸雾的工作环境，消除了酸对工人身体的伤害，降低了镀锌铁丝的生产成本，提高了企业的竞争力。 【EN】The invention discloses an iron wire galvanizing production line and an acid-free galvanizing method, the production line comprises a pay-off machine, a plating assisting tank, a high-frequency induction heating device, a zinc pot, a gas wiping device, a water cooling device and a take-up machine which are connected in sequence, a front centering adjusting roller is arranged between the high-frequency induction heating device and the zinc pot, a rear centering adjusting roller is arranged between the zinc pot and the take-up machine, the zinc pot is of a horizontal overflow type double-zinc pot structure, at least one anode plate is arranged on the upper plane of a groove body of the zinc pot and is connected with a positive electrode of a power supply, and the bottom of the zinc pot is connected with a galvanizing liquid storage cylinder positioned below the zinc pot through a water return pipe and a water inlet pipe. The invention has no cyanogen and acid washing, does not discharge circulating water, is clean and environment-friendly, can replace the traditional galvanized iron wire equipment, saves water, has no pollution to the environment, reduces the labor intensity of workers, enables the workers to get rid of the working environment with strong acid mist, eliminates the harm of acid to the bodies of the workers, reduces the production cost of the galvanized iron wire and improves the competitiveness of enterprises.

摘要：【中文】本发明涉及一种电动牙刷，包括：支架主体、内刷头、充电头卡槽和端盖，支架主体顶端设有延长头，底端设有充电头卡槽；延长头内顶端设有中空部，延长头外壁上沿其长度方向设有凹槽，内刷头外壁的下部处设有内刷头胶圈，内刷头胶圈抵接在内刷头与外壳间；充电头卡槽内沿圆周设有与充电头上凹槽匹配的凸起，充电头卡槽外圈套设有锁扣，锁扣外圈套设有端盖；端盖上设有通孔，通孔圆周设有与延长圈匹配的延长圈凹槽。本发明避免使用硅胶，减少生产流程；内刷头胶圈和垫圈减缓了电机对外壳造成的振感和噪音；端盖上的延长圈凹槽，避免充电头产生偏移；端盖上设置的防水部，避免防水部的丢失，提高了使用者的舒适性。 【EN】The present invention relates to an electric toothbrush comprising: the support comprises a support main body, an inner brush head, a charging head clamping groove and an end cover, wherein an extension head is arranged at the top end of the support main body, and the charging head clamping groove is arranged at the bottom end of the support main body; a hollow part is arranged at the top end in the extension head, a groove is arranged on the outer wall of the extension head along the length direction of the extension head, an inner brush head rubber ring is arranged at the lower part of the outer wall of the inner brush head, and the inner brush head rubber ring is abutted between the inner brush head and the shell; a bulge matched with the groove on the charging head is arranged in the charging head clamping groove along the circumference, a lock catch is sleeved on the outer ring of the charging head clamping groove, and an end cover is sleeved on the outer ring of the lock catch; the end cover is provided with a through hole, and the circumference of the through hole is provided with an extension ring groove matched with the extension ring. The invention avoids using silica gel, reduces the production flow; the inner brush head rubber ring and the gasket reduce vibration and noise of the shell caused by the motor; the extension ring groove on the end cover prevents the charging head from deviating; the waterproof part arranged on the end cover avoids the loss of the waterproof part and improves the comfort of a user.

摘要：【中文】本发明公开了一种气体悬浮法原片玻璃成型制作系统，包括：玻璃流道、气悬成型室、气体介质、高温气体发生器、气体压强调节室、拉玻装置、传感器、防护罩；玻璃流道向下倾斜，呈上小下大形状，接受熔窑出来的熔融玻璃液；气悬成型室包括气孔、挡板、回收罩，密布的气孔位于玻璃下方，挡板位于玻璃上方。气体介质是高温高压的，从一定形状的气孔出来，形成气悬浮膜层，将玻璃浮起，玻璃液在悬浮层上逐渐冷却形成玻璃带，通过拉玻装置的拉力向前移动，进入退火窑；传感器反馈气体温度、压力和玻璃高度、速度、厚度值，便于实时控制气体参数；防护罩对气悬成型室起保温作用，多层夹芯结构，夹芯层为绝热材料。 【EN】The invention discloses a forming and manufacturing system for original glass sheets by a gas suspension method, which comprises the following steps: the glass forming device comprises a glass flow channel, a gas suspension forming chamber, a gas medium, a high-temperature gas generator, a gas pressure adjusting chamber, a glass pulling device, a sensor and a protective cover; the glass runner inclines downwards and is in a shape with a small upper part and a big lower part, and receives molten glass liquid from the melting furnace; the air suspension forming chamber comprises air holes, a baffle plate and a recovery cover, wherein the densely distributed air holes are positioned below the glass, and the baffle plate is positioned above the glass. The gas medium is high temperature and high pressure, and comes out from the air holes with certain shapes to form a gas suspension film layer, the glass floats, the glass liquid is gradually cooled on the suspension layer to form a glass ribbon, and the glass ribbon moves forwards through the pulling force of the glass drawing device and enters the annealing kiln; the sensor feeds back the gas temperature, pressure and the height, speed and thickness values of the glass, so that the gas parameters can be conveniently controlled in real time; the protective cover has heat preservation effect on the air suspension forming chamber, and has a multi-layer sandwich structure, wherein the sandwich layer is made of heat-insulating materials.

摘要：【中文】本发明公开了一种三羟甲基丙烷和双三羟甲基丙烷连续缩合工艺，具体步骤为：投料前向连续反应换热器中加满质量百分比为37%的甲醛溶液，启动循环泵；严格按照配比均匀的把正丁醛和甲醛通过醛混合器、碱和水通过碱混合器投入连续反应换热器中；接着物料连续进入连续反应器中；接着物料连续进入连续中和反应器中；向连续中和反应器中加入甲酸来中和物料中残余的碱；中和完成，缩合反应结束，缩合液通过分离精制等步骤得到合格的三羟甲基丙烷、双三羟甲基丙烷和甲酸盐。本发明采用连续缩合工艺生产三羟甲基丙烷和双三羟甲基丙烷缩合液，具有设备投资少、生产能力大、甲醛消耗低和双三羟甲基丙烷选择收率高等优点。 【EN】The invention discloses a continuous condensation process of trimethylolpropane and ditrimethylolpropane, which comprises the following specific steps: adding a formaldehyde solution with the mass percent of 37% into a continuous reaction heat exchanger before feeding, and starting a circulating pump; the n-butyl aldehyde and the formaldehyde are evenly put into a continuous reaction heat exchanger through an aldehyde mixer and alkali and water through an alkali mixer according to the strict proportion; then continuously feeding the materials into a continuous reactor; then continuously feeding the materials into a continuous neutralization reactor; adding formic acid to the continuous neutralization reactor to neutralize residual alkali in the material; and (3) after the neutralization is finished and the condensation reaction is finished, separating and refining the condensation liquid to obtain qualified trimethylolpropane, ditrimethylolpropane and formate. The invention adopts the continuous condensation process to produce the trimethylolpropane and the ditrimethylolpropane condensation liquid, and has the advantages of less equipment investment, large production capacity, low formaldehyde consumption, high ditrimethylolpropane selective yield and the like.

摘要：【中文】本发明公开了一种用于稀薄气体的耐高温火花塞，包括火花塞外壳、绝缘体和中央电极；所述中央电极上方设置负极打火单元，该负极打火单元包括壳体和负电极；所述壳体下端部嵌入到火花塞外壳内固定，壳体内的空腔和火花塞外壳内的中空腔形成扩容腔室；所述负极打火单元的壳体底面正中心设有中央排气孔，所述壳体外侧壁上设有纵向的弧形凹槽，该弧形凹槽自壳体下端部一直延伸到未被火花塞外壳包覆的上端部；所述壳体上设有水平设置的负电极，该负电极端头与中央电极顶端间隔打火距离。本发明耐高温火花塞负极打火单元的顶端不再出现热量的集聚现象，保证了负电极不至于过热损坏，同时有效的防止了废气在中空腔内的集聚；能稳定点燃气缸内稀薄气体。 【EN】The invention discloses a high-temperature resistant spark plug for lean gas, which comprises a spark plug shell, an insulator and a center electrode, wherein the insulator is arranged on the spark plug shell; a negative electrode ignition unit is arranged above the central electrode and comprises a shell and a negative electrode; the lower end part of the shell is embedded into the spark plug shell and fixed, and a cavity in the shell and a hollow cavity in the spark plug shell form an expansion cavity; the center of the bottom surface of the shell of the negative electrode ignition unit is provided with a central exhaust hole, the outer side wall of the shell is provided with a longitudinal arc-shaped groove, and the arc-shaped groove extends from the lower end part of the shell to the upper end part which is not coated by the shell of the spark plug; the shell is provided with a horizontally arranged negative electrode, and the end of the negative electrode is spaced from the top end of the central electrode by a sparking distance. The top end of the high-temperature-resistant sparking plug cathode ignition unit does not have the heat accumulation phenomenon any more, the cathode is ensured not to be damaged by overheating, and meanwhile, the accumulation of waste gas in the hollow cavity is effectively prevented; lean gas in the ignition gas cylinder can be stably ignited.

摘要：【中文】本发明公开了一种新型人工冷光鞋，包括鞋底、鞋帮面和鞋筒，所述鞋帮面固定在所述鞋底上；所述鞋筒设置在所述鞋帮面的后端，所述鞋筒的上端设置有一束口，所述鞋筒的外部设有多个冷光片；其中，所述冷光片通过可拆卸部件连接在所述鞋筒外，所述可拆卸部件包括安装部、镶块和卡装部，所述安装部与所述冷光片的内侧壁固定连接；所述镶块卡合连接在所述鞋筒的侧槽内；所述卡装部通过螺钉安装在所述镶块的外侧。由于在冷光片的一侧设有可拆卸部件，通过安装部、镶块和卡装部的连接配合，可以在更换冷光片时较为方便。 【EN】The invention discloses a novel artificial cold light shoe which comprises a sole, an upper surface and a shoe barrel, wherein the upper surface is fixed on the sole; the shoe tube is arranged at the rear end of the upper surface, the upper end of the shoe tube is provided with a binding opening, and a plurality of cold light sheets are arranged outside the shoe tube; the cold light sheet is connected to the outside of the shoe barrel through a detachable component, the detachable component comprises an installation part, an insert and a clamping part, and the installation part is fixedly connected with the inner side wall of the cold light sheet; the insert is connected in a side groove of the shoe barrel in a clamping manner; the clamping part is installed on the outer side of the insert through a screw. Because one side at the electroluminescent sheet is equipped with detachable part, through the connection cooperation of installation department, insert and clamping part, can be comparatively convenient when changing the electroluminescent sheet.

摘要：【中文】本发明公开了一种永磁同步电机的无位置传感器控制方法及系统，采集电机三相电源中任两相的实时电流，对所述实时电流分别进行Clark变化和Park变化，对电流进行快速傅里叶变换，提取转子位置误差信息，输入到位置跟踪观测器，分析误差电流并对误差电流进行误差调节，从而对逆变器进行脉宽调制，并通过所述逆变器控制电机的运行。本发明通过对电机高频电流信号的观测可以将转子位置信息完全解耦从而减小估算误差，通过计算直接提取的方式改善了转子位置和速度估算方案的估算性能，避免观测环节使用滤波器会带来相位偏移和时间滞后，影响观测精度和系统稳定性。 【EN】The invention discloses a position-sensorless control method and a position-sensorless control system for a permanent magnet synchronous motor, which are used for collecting real-time currents of any two phases in a three-phase power supply of the motor, respectively carrying out Clark change and Park change on the real-time currents, carrying out fast Fourier transform on the currents, extracting rotor position error information, inputting the rotor position error information to a position tracking observer, analyzing the error currents and carrying out error regulation on the error currents, so that pulse width modulation is carried out on an inverter, and the operation of the motor is controlled through the inverter. According to the invention, the rotor position information can be completely decoupled through observing the high-frequency current signal of the motor, so that the estimation error is reduced, the estimation performance of the rotor position and speed estimation scheme is improved through a direct calculation extraction mode, and the influence on the observation precision and the system stability caused by phase offset and time lag caused by using a filter in an observation link is avoided.

摘要：【中文】本发明公开了一种降低蔬菜对土壤中Pb(II)富集作用的生物炭的制备方法及应用，将玉米秸秆洗净、烘干，切段，用氢氧化钾溶液浸泡后，于500℃‑700℃下无氧炭化180min，研磨，过100目筛，用去离子水洗至中性后，干燥，再过100目筛，获得改性生物炭。该改性生物炭施用于Pb(II)污染土壤中，能显著减少土壤中可交换态铅，增加残渣态铅，以降低Pb(II)的迁移性和生物利用性。本发明使玉米秸秆得到有效利用，原料充足易获取，改性工艺简单，可操作性强；能广泛应用于微污染土壤中，减少蔬菜对Pb(II)的富集作用，提高食品安全性，具有多重环保意义。 【EN】The invention discloses a preparation method and application of biochar for reducing enrichment effect of vegetables on Pb (II) in soil, which comprises the steps of cleaning corn straws, drying, cutting into sections, soaking in potassium hydroxide solution, carbonizing for 180min at 500-700 ℃ in an oxygen-free mode, grinding, sieving with a 100-mesh sieve, washing with deionized water to be neutral, drying, and sieving with the 100-mesh sieve to obtain modified biochar. The modified biochar applied to Pb (II) -polluted soil can obviously reduce exchangeable-state lead in the soil and increase residual-state lead so as to reduce the migration and bioavailability of Pb (II). The invention effectively utilizes the corn straws, has sufficient and easily obtained raw materials, simple modification process and strong operability; can be widely applied to micro-polluted soil, reduces the enrichment effect of vegetables on Pb (II), improves the food safety and has multiple environmental protection meanings.

摘要：【中文】本发明公开了一种球磨机滚筒结构，包括筒体和安装于筒体内壁的衬板，衬板包括沿筒体轴向依次设置的破碎段和磨损段，破碎段上设置有沿筒体内壁周向布置的内齿轮状凸起，内齿轮状凸起的顶端两侧设置有破碎棱，磨损段上设置有沿筒体内壁周向布置的内波浪状凸起，内波浪状凸起的两侧圆滑过渡。通过破碎段对矿石进行破碎，通过磨损段对矿石进行磨损，具有破碎和磨损两种工作机理，提高综合性能。本发明还公开一种包括上述球磨机滚筒结构的球磨机。 【EN】The invention discloses a roller structure of a ball mill, which comprises a barrel and a lining plate arranged on the inner wall of the barrel, wherein the lining plate comprises a crushing section and a wear section which are sequentially arranged along the axial direction of the barrel, an internal gear-shaped bulge arranged along the circumferential direction of the inner wall of the barrel is arranged on the crushing section, crushing edges are arranged on two sides of the top end of the internal gear-shaped bulge, an internal wave-shaped bulge arranged along the circumferential direction of the inner wall of the barrel is arranged on the wear section, and two sides of the internal wave-shaped bulge are in smooth transition. The ore is crushed through the crushing section, and is abraded through the abrasion section, so that the crushing and abrasion-resistant ore crusher has two working mechanisms of crushing and abrasion, and the comprehensive performance is improved. The invention also discloses a ball mill comprising the ball mill roller structure.