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電泳技術(shù)

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電泳槽閥門設(shè)計中英對照版

1386 人參與 2012年01月30日 00:00 分類 : 電泳設(shè)備電泳設(shè)備工藝評論

Valves??????? ??? 閥

Eccentric plug, ball, and butterfly valves are all used in electrocoat systems. Materials of construction and configuration are important considerations for best service life. 在電泳系統(tǒng)中，偏心閥，球閥及蝶閥都有使用，其材料及結(jié)構(gòu)對延長使用壽命很重要。 The wafers and shafts of butterfly valves should be fabricated only of 316 stainless steel. Some cast irons, especially nodular cast, have had poor service life. Teflon or EPDM should be used for valve seats. Faces of eccentric plug valves should be coated with teflon, acrylonitrile, butadiene, or Hycar-RS24 to prevent erosion of the plug face. Ball valves should be made from 316 stainless steel to minimize wear. 蝶閥的閥片及軸只能用316不銹鋼制造。某些鑄鐵，特別是球鐵壽命很短，閥座要用聚四氟乙烯制成。偏心閥的表面要涂以聚四氟乙烯，丙烯晴，丁二烯或合成橡膠-RS24以防止表面侵蝕。球閥要用316不銹鋼制成以減少磨損。 Copper-, brass-, aluminum-, or zinc-coated components should not be used in electrocoat systems. Rapid dissolution of these metals caused by contact with cathodic paints will destroy the component and contaminate the paint. Valves should be installed as close as possible to "T" formations in piping to permit flushing of valve disks (see Figure 9). A "dead spot" is an area where un-agitated paint can gather, resulting in settling and causing an accumulation of pigment and dirt and valve plugging. A high-pressure flush line may be necessary to prevent this problem from occurring. 銅，黃銅，鋁或鍍鋅組件不能用于電泳系統(tǒng)，這些金屬與陰極電泳漆接觸很快溶解，將導(dǎo)致組件損壞并污染槽液。在管路中，閥門要盡可能靠近“T”型結(jié)構(gòu)安裝，以使閥面得到?jīng)_刷。（見圖9）。在“死區(qū)”攪拌不到的漆會沉積，導(dǎo)致沉淀，引起雜質(zhì)堆積和閥門堵塞，為防止這種問題的發(fā)生，安裝一高壓沖洗系統(tǒng)可能是必須的。

Pressure Gauges??????????????????????????????????? 壓力表 Proper placement of pressure gauges is vital to reduce blockage. The pressure gauge should be piped only from the top of the system line, and a valve should be installed between the system line and the pressure gauge. No horizontal or looped piping should be present which could promote settling and blockage. An alternative design incorporates a diaphragmed pipe flange which can eliminate settling and blockage problems. The Iso-Ring made by Ronningen-Petter is one such device.? Pressure gauges and diaphragms are normally filled with glycerine and Iso-Rings are filled with a combination of ethylene glycol and water.? Pressure gauges should be sized such that the normal operating pressure is mid range of the gauge. 壓力表安置在合適的位置對減少其堵塞是及重要的。只有將其安裝在系統(tǒng)管線的上端，而且在系統(tǒng)管線路和壓力表之間要安裝一個閥門，不能水平或環(huán)型連管，不然會引起沉淀和堵塞，可用一種在連接管邊緣裝一個膜片的設(shè)計，由Ronningen-Peter 制造的Iso-Ring就是這樣一種儀表，由乙二醇的化合物和水組成。壓力表應(yīng)按通常的操作壓力在中央有一個大小范圍。

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