Method of drying wood and a system therefor
    52.
    发明授权
    Method of drying wood and a system therefor 失效
    木材干燥方法及其系统

    公开(公告)号:US06640462B1

    公开(公告)日:2003-11-04

    申请号:US10030107

    申请日:2002-05-30

    IPC分类号: F26B700

    摘要: Disclosed is a method of drying timbers loaded in a drying chamber, which comprises the steps of heating the drying chamber by a heating system up to a temperature of 80 to 100° C., subjecting the timbers to vacuum blowing by connecting the inside of the drying chamber with a vacuum chamber (receiver) evacuated by a rotary pump until the inside pressure of the drying chamber drops to 1 to 10 mmHg, disconnecting the inside of the drying chamber from the vacuum chamber, connecting the drying chamber with the atmosphere. When the inside of the drying chamber is connected with the vacuum chamber, the moisture content of the timbers is sharply reduced, so that their temperature sharply drops. Thereafter, when it is disconnected from the vacuum chamber, and connected with the atmosphere, the inside temperature of the drying chamber is again increased. Meanwhile, the heating system is worked during the whole process. The above steps constitute one cycle that is sequentially repeated until the moisture content of the timbers drops to a desired level. Preferably, the connection between the drying chamber with the vacuum chamber is made in 0.1 to 0.5 seconds. Pressure release is made in the vacuum for 0.5 to 5.0 seconds until reaching equilibrium moisture. The blow-down in the vacuum is carried out by a heat carrier with a temperature of 80 to 150° C. until reaching the volume average material temperature of 80 to 90° C. with the subsequent pressure release in the drying chamber lower than the equilibrium, thus providing high-speed vacuum blowing.

    摘要翻译: 本发明公开了一种干燥室中装载的木材的方法,其特征在于包括以下步骤:通过加热系统将干燥室加热到80-100℃的温度,通过将木材的内部连接 干燥室具有通过旋转泵抽真空的真空室(接收器),直到干燥室的内部压力下降到1至10mmHg,将干燥室的内部与真空室断开,将干燥室与大气连接。 当干燥室的内部与真空室连接时,木材的含水量急剧降低,使得它们的温度急剧下降。 此后,当与真空室断开并与大气连接时,干燥室的内部温度再次增加。 同时,加热系统在整个过程中工作。 上述步骤构成一个循环,其顺序重复,直到木材的水分含量降至期望水平。 优选地,干燥室与真空室之间的连接在0.1至0.5秒内进行。 压力释放在真空中进行0.5至5.0秒,直到达到平衡水分。 真空中的吹扫由温度为80-150℃的载热体进行,直到达到体积平均材料温度为80至90℃,随后干燥室中的压力释放低于 平衡,从而提供高速真空吹风。

    Turbomolecular high-vacuum pulp
    53.
    发明授权
    Turbomolecular high-vacuum pulp 失效
    涡轮分子高真空纸浆

    公开(公告)号:US4116592A

    公开(公告)日:1978-09-26

    申请号:US716258

    申请日:1976-08-20

    摘要: A turbomolecular high-vacuum pump has a substantially vertically extending cylindrical casing provided with inlet and outlet pipes for gas being evacuated. The casing accommodates, in the top part thereof, a stator having vanes disposed between the rotor vanes so as to define passages for gas being evacuated. The rotor is connected to a high-speed hollow shaft extending substantially vertically. The shaft is journalled in bearings and connected to the rotor by means of a high-frequency electric drive motor. The pump incorporates means for lubricating the bearings. The stator of the high-frequency drive motor of the pump is electrically coupled to the stator of a generator of a machine-type frequency converter which has an induction drive motor. Another, low-speed shaft is journalled in the bearings in the bottom part of the pump casing coaxially with the high-speed shaft, one shaft embracing the other. The induction motor rotor and the rotor of the generator of the machine-type frequency converter are mounted on the low-speed shaft, the stators of both devices being fixed within the pump casing. Means for lubricating the bearings of both shafts is disposed at the lower end of the low-speed shaft.

    摘要翻译: 涡轮分子式高真空泵具有基本垂直延伸的圆柱形壳体,其具有用于抽出气体的入口和出口管。 壳体的顶部在其顶部容纳具有设置在转子叶片之间的叶片的定子,以便限定用于抽出的气体的通道。 转子连接到基本垂直延伸的高速中空轴。 轴轴承轴承,并通过高频电动马达连接到转子。 该泵包含用于润滑轴承的装置。 泵的高频驱动马达的定子电耦合到具有感应驱动马达的机型变频器的发电机的定子上。 另一个低速轴在与高速轴同轴的泵壳的底部的轴承中轴承,一个轴包围另一个轴。 机械式变频器的感应电动机转子和发电机的转子安装在低速轴上,两个装置的定子固定在泵壳内。 用于润滑两轴的轴承的装置设置在低速轴的下端。

    Apparatus for hard facing of valves for internal combustion engines
    54.
    发明授权
    Apparatus for hard facing of valves for internal combustion engines 失效
    内燃机阀门硬面装置

    公开(公告)号:US4116375A

    公开(公告)日:1978-09-26

    申请号:US790980

    申请日:1977-04-26

    IPC分类号: B23K13/00 B23K1/04 B23K37/04

    CPC分类号: B23K13/00

    摘要: An apparatus is designed for hard-facing internal combustion engines valves by the melting and fusion in high-frequency current field of heat-resistant rings of hard alloy upon the seating surface of the valves. The apparatus comprises an actuator means mounting gripping jaws and a support which is adapted to receive the ring and to feed it onto the valve stem at the moment the valve being gripped by the jaws. The actuator associates with a manipulator adapted to provide for turning movement thereof in two mutually perpendicular planes, thereby conveying the valve with the ring positioned on its seating surface from the receiving area fusion or welding zone, the valve stem being upwardly directed at the same time. The apparatus features high efficiency owing to combining the steps of putting the alloy ring on the valve and conveying the latter to the welding or fusion zone.

    摘要翻译: 一种设备用于通过在阀座的座面上通过在硬质合金的耐热环的高频电流场中的熔化和融合来设计用于硬面内燃机的阀。 该装置包括安装夹爪的致动器装置和适于接收环的支撑件,并且在阀被夹爪夹持的时刻将其馈送到阀杆上。 致动器与适于提供在两个相互垂直的平面中的转动运动的机械手相关联,从而从定位在接收区域熔融区或焊接区的环上传送阀,阀杆同时向上指向 。 该装置由于结合将合金环放在阀上并将其输送到焊接或熔合区的步骤而具有高效率。

    Process for producing amethyst crystals
    58.
    发明授权
    Process for producing amethyst crystals 失效
    制备紫水晶的方法

    公开(公告)号:US4021294A

    公开(公告)日:1977-05-03

    申请号:US678744

    申请日:1976-04-21

    IPC分类号: C30B7/00 B01J17/04 C01B33/12

    摘要: A process for producing amethyst crystals involving growing of colorless quartz crystals by a hydrothermal method of a temperature drop in a high-pressure autoclave on crystalline quartz seed plates oriented parallel to the crystallographic planes of the major {1011} and minor {1101} rhombohedrons using crystalline quartz as a charge. Said growing is effected from aqueous solutions of potassium carbonate or potassium hydroxide having a concentration ranging from 4 to 7 wt.% and containing iron introduced into the autoclave in the form of metallic iron or in the form of its oxydic or hydroxydic compounds in an amount ranging from 5 to 30 g/l of the solution. The growing process is effected at a crystallization temperature within the range of from 300.degree. to 500.degree. C. under a pressure ranging from 200 to 1,700 kg/cm.sup.2 and a crystal growth rate of from 0.05 to 0.5 mm/day. It is advisable to introduce into the autoclave, prior to the crystal growing, lithium nitrite or lithium nitrate or manganese nitrate in an amount ranging from 1 to 10 g/l of the solution. The thus-grown colorless quartz crystals are exposed to an ionizing irridation. The process for growing crystals according to the present invention is well-reproducible, since it is performed at specfied physico-chemical parameters. The process of the present invention enables the production of amethyst crystals with a high color purity and a high transparency (i.e., with no cracks).

    摘要翻译: 一种生产紫水晶的方法,涉及通过在高压高压釜中的温度降低的水热法生长无色石英晶体,晶体石英晶种板平行于主要{1011}和次要{1101}菱面体的晶面取向,使用 晶体石英作为电荷。 所述生长由浓度范围为4至7重量%的碳酸钾或氢氧化钾的水溶液进行,并且含有以金属铁的形式引入高压釜中的铁或其氧化或羟基化合物形式的量 范围为5至30g / l的溶液。 生长过程在300至500℃范围内的结晶温度下在200至1700kg / cm2的压力和0.05-0.5mm /天的晶体生长速率下进行。 建议在晶体生长之前将高压釜引入量为1至10g / l溶液的亚硝酸锂或硝酸锂或硝酸锰。 将如此生长的无色石英晶体暴露于电离刺激。 根据本发明的用于生长晶体的方法是可重现的,因为它在特定的物理化学参数下进行。 本发明的方法能够生产具有高色纯度和高透明度(即没有裂纹)的紫晶晶体。

    Photocolorimetric gas analyzer
    59.
    发明授权
    Photocolorimetric gas analyzer 失效
    光色气体分析仪

    公开(公告)号:US3920402A

    公开(公告)日:1975-11-18

    申请号:US47055174

    申请日:1974-05-16

    IPC分类号: G01N31/22 G01N33/00 G01N21/48

    CPC分类号: G01N31/223 G01N33/0027

    摘要: A photocolorimetric gas analyzer based on a sensitive element, comprising a radiation source whose electromagnetic radiation is received by the sensitive element which is made in the form of a gas-impermeable tablet containing a selective reagent and an inert filler, which changes the optical properties of its surface layer as a result of the reaction of one of the components of the gas mixture being analyzed and the reagent; a radiation detector to receive the radiation reflected by the surface layer; and means for mechanically removing the latter.

    摘要翻译: 一种基于敏感元件的光色气体分析仪,包括辐射源,其辐射源由敏感元件接收,该敏感元件以不含气体的片剂的形式制成,该片剂含有选择性试剂和惰性填料,其改变光学特性 作为被分析的气体混合物的组分之一与试剂反应的结果的表面层; 辐射检测器,用于接收由表面层反射的辐射; 以及用于机械地去除后者的装置。