密封

According to the disc of the installation in the valve body, butterfly valve can be divided into the following forms:① centrosymmetric board.

阀杆固定在蝶板的径向中心孔上，阀杆与蝶板均垂直安装二、非密封形蝶阀：关闭时不能保证密封的蝶阀。

Preparation of the cathode includes:shaping under the press of 40Mpa, sintering at 550℃for 1 hour and at 900℃for 8 hours and threading with molybdenum bar; Considering the literatures we choose CaCl2 as salt for preparation titanium. Pretreatment of salt is for 1 hour at 100℃and for 2 hours at 300℃. Partial pressure of oxygen which need lower than 5.11×10-7Pa to reduct titanium oxides and hygroscopic property of salt need a sealed equipment to electrolyse. And finally successfully designed a satisfied one and the results show that the equipment can be satisfied the requirment of the experiment. Flow of the inert gas is 1.5L/min, the voltage is 2.8 V, temperature is 850℃and time is 2 hours during pre-electrolysis. Flow of the inert gas is 0.2L/min, the voltage is 3.1 V, temperature is 900℃and time changes with the mass of TiO2 during electrolysis, namely the greater need the longer time; To eliminate influence of salt and other impurities, the products need to wash with distilled water and dilute chlorhydric acid , then wash with dilute hydrochloric acid under supersonic wave assistant. Finally, electrometical properties of the electrolysis of TiO2 is researched by cyclic voltammetry and chronoamperometry, and results show that there are two main reodox steps, namely from TiO2 to TiO and from TiO to Ti.

阴极制备主要包括40MPa压力下模压成型、两段式烧结(1小时内升至550℃保温1小时，再1小时升温至900℃保温8小时)及烧结后TiO2块打孔用钼棒串接三个主要环节；实验中选用CaCl2作为电解熔盐，并对其进行预处理(100℃，保温1小时； 300℃，保温2小时)；经热力学计算，还原钛氧化物的氧分压至少要低于5.11×10-7Pa，结合电解过程中所用熔盐CaCl2有极强的吸水性的特点，电解装置应有较高的密封性，自行设计了一套密封性可靠的电解装置，便于实验过程中熔盐预处理和氧分压的控制；通过干燥处理预电解过程中Ar流量大约为1.5L/min、电压为2.8 V、温度为850℃、时间为2小时，电解过程中Ar流量大约为0.2L/min、电压为3.1V、温度为900℃，实验结果表明电解时间与TiO2质量密切相关，质量越大需要电解的时间越长；通过自来水冲洗—稀盐酸浸泡、洗涤—在超声波辅助作用下稀盐酸洗涤，可减少熔盐及其它杂质对电解产物检测结果的影响；最后，通过循环伏安法、计时电流法对电解机理的研究，确定电解还原TiO2制备金属钛主要经历了TiO2-TiO-Ti的过程。

The device comprises retaining means for keeping the lid (2, 3) in place in a sealing manner during treatment, and the retaining means comprise a bounding frame (10) that is circumferentially closed, with two interconnected end pieces (11, 12) situated at a distance from each other, which end pieces in a closed position can be slid over the pressure vessel (1) and thereby retain the end faces of the pressure vessel (1) in the axial direction.

所述装置包括用于在处理期间以密封方式将盖子(2、3)保持在适当的位置中的保持装置，并且所述保持装置包括沿圆周方向密封的围绕框架(10)，具有两个布置在相隔一定距离的位置处的互连端部件(11、12)，其中所述端部件在关闭位置中可滑到压力容器(1)上，从而沿轴向方向保持压力容器(1)的端面。

A valve of cleanable design capable of maintaining unfavourable conditions for microbial activity on the downstream side and/or outlet of the valve, said valve comprising: A smooth and contoured body ( 5 ) with an integral upstream connector ( 1 ), downstream connector and defined fluid flow path; a flexible sealing membrane ( 9 ) being: selectively moveable into contact with the valve body to close the valve; selectively moveable out of contact with the valve body to open the valve; selectively operable to a range of positions to vary the flow rate of fluid through said valve; a defined internal shape that allows the fluid to drain out of the valve body; an elongated heater ( 7 ) secured into the valve body in a location so as not to be contact with the fluid or disrupt the internal smooth and contoured body, the heater being operative to heat the valve body to a predetermined temperature.

一种清洁设计阀，它能够在阀的下游侧和/或出口维持微生物活动的不利条件，所述的阀包括：一个平滑仿形主体(5)，它具有整体式的上游连接器(1)、下游连接器和确定的流体流动路径；一个柔性密封膜(9)，所述的密封膜：可以选择性地移动以便与所述阀体接触，从而闭合所述的阀；可以选择性地移动以便不与所述阀体接触，从而打开所述的阀；可以选择性地操作到一定范围的位置以改变通过所述阀的流体的流速；一个确定的内部形状，所述的内部形状允许流体从所述的阀体上排出来；一个细长的加热器(7)，它固定在所述阀体内的一个位置，以使加热器不与流体接触，或者说加热器不扰动内部平滑的仿形体，所述的加热器可以操作以加热阀体到预先确定的温度。

From the beginning of 1980s, Non-asbestos Compressed Fiber Sheet wasdeveloped by some advanced countries as substitute of Compressed AsbestosFiber Sheet.It has been widely used as seal material in many different fieldsbecause of its good processing method and no harm to environment andpeople. Such material has diversity and devisable ingredient and performancesince non-asbestos fiber has wide selectivity and combination, which make peopleto pay close attention and take researches on it.

压缩非石棉纤维橡胶板(Non-asbestos Compressed Fiber Sheet，CFS)是八十年代初以美国为首的工业发达国家为替代传统压缩石棉纤维橡胶板(Compressed Asbestos Fiber，CAF)而开发研制的一类新型非石棉纤维增强密封材料，它不仅具有较好的加工工艺性，而且还具有对环境和人体的无害性，因此被广泛用于各行业密封的需要。

It was sealed by dielectrically induced heat and was sufficiently elastic to yield a hermetic seal if a single throw knot in it were stretched tightly and then released.

它被介电感应高温密封，如果一个投掷节在里边被紧紧地拉伸，然后被释放，它足够有弹力能产生一个密封的封印。

Adopts diglyph sealing, for high degree of protection

采用双槽密封条密封，防护等级高

PPE offers the most technically advanced range of sealing materials, including EnDura and Perlast elastomers plus high performance plastics, which provide the ultimate in high and low temperature performance, chemical and ED resistance for critical sealing applications.

PPE 提供了技术上最为先进的系列密封材料，其中包括 EnDura 和 Perlast 弹性体和高性能塑料，它们能在苛刻的密封使用环境中实现耐高低温、耐化学和抗 ED方面的终极性能。

Further,an one-component RTV fluoro-silicone adhesive/sealant is prepared on the based material of the synthesized fluosilicic rubber.

利用阴离子开环聚合方法合成了羟基封端液体氟硅橡胶，用合成的氟硅橡胶为主体材料制备出单组分室温硫化氟硅橡胶胶粘剂/密封剂，该胶粘剂/密封剂具有透明、耐油、表干快和贮存稳定性好的特点，同时又保留了硅橡胶的通性。

States under the Sky Fling international co., Ltd., is a professional manufactory of car care products, we offer many kinds of car care products, including the auto under coating, glare professional polish, chipping rubber, engine surface degreaser, oil treatment, super oil treatment, pitch cleaner, 3 minutes motor flush, de-rust lubricating spray, car refrigerant, panel cleaner, multi-purpose foam cleaner, tyre foam cleaner, carburetor cleaner, glass cement, multi-purpose seal gum, seal gum for the sheet matel, radiator flusher, antifreeze, windshield cleaner, leather vinyl rubber protectant, Deluxe hard wax, Deluxe colour back wax and so on.

佛山市天翼发展有限公司隶属天翼国际有限公司，是专业生产销售汽车养护用品的企业，主要产品：底盘装甲、釉、粒粒胶、发动机外部清洁剂、发动机强力修复剂、超级机油精、柏油清洁剂、3分钟引擎洁霸、多功能锈蚀松动剂、汽车专用致冷剂SFA、表板蜡、多功能泡沫清洁剂、轮胎泡沫光亮剂、化油器清洁剂、玻璃胶、多功能密封胶、钣金专用密封胶、水箱清洁剂、防冻剂、雨刮精、高级固蜡、高级砂蜡等。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。