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篩絹(簡稱為篩網(wǎng)),是面粉廠的重要輔助材料。





1、篩網(wǎng)的分類及選用標(biāo)準(zhǔn)
面粉廠所用的篩網(wǎng)依材質(zhì)而分大致有以下幾種:
蠶絲篩網(wǎng):由多股天然蠶絲絞織成絲,然后再經(jīng)編織而成,特點是彈性好、不易松弛、孔眼尺寸不易變形、具有良好的吸濕性及放濕性、較不易產(chǎn)生靜電等。但是不耐磨、易起毛。
錦綸(尼龍)篩網(wǎng):由聚酰氨單絲纖維編織而成。耐磨、使用壽命長,高強(qiáng)度,綜合使用效果好。
滌綸篩網(wǎng),由聚酯纖維單絲編織而成。強(qiáng)度高,不易變形,但較之尼龍網(wǎng),耐磨性及效果略差。
國外面粉廠也曾普遍使用絲質(zhì)篩網(wǎng)直到二十世紀(jì)四十年代,當(dāng)時用于分級的篩網(wǎng)一般有特料篩絹(14-72號)、三料篩絹(7-72號)兩種,大致相當(dāng)于開口尺寸1600-200um;用于篩粉的篩網(wǎng),則有標(biāo)準(zhǔn)(代號S,3-25S)、單料篩絹(代號X,4X-17X)、雙料篩絹(代號XX,3-17XX)、三料篩絹(代號XXX,3XXX-18XXX)幾種,大致相當(dāng)于篩孔尺寸300-60um。
國內(nèi)面粉廠也普遍使用蠶絲網(wǎng),標(biāo)注也是引自國外行業(yè)規(guī)范而來的,“GG”(Grit Gauze)指粗料篩網(wǎng),意為每一維也納英寸(約等于1.0375英寸)長度內(nèi)篩孔數(shù),編織方式為全絞織,“XX”指細(xì)料篩網(wǎng),主要用于粉篩,半絞織方式。
國內(nèi)篩網(wǎng)的標(biāo)注以公制為基礎(chǔ),如CB、JQ、JCQ等都表示每厘米中的篩孔數(shù),材料有了蠶絲、錦綸和錦蠶交織,編織方式有了平紋織、半絞織、全絞織和方平織。
隨著引進(jìn)制粉生產(chǎn)線配套的進(jìn)口尼龍篩網(wǎng)材料以其壽命長、性能好開始引起業(yè)內(nèi)人士的關(guān)注,且直接以篩孔的尺寸大小為標(biāo)注,此開口尺寸已系列化、標(biāo)準(zhǔn)化、規(guī)范化,并考慮了行業(yè)稱謂及連慣性,分別以“GG,XXX,”對應(yīng),其中“GG”是平紋織;“XXX”是平紋織增強(qiáng)型,也是面粉廠應(yīng)用最多的,編織方式為單、雙經(jīng)向重平織,通用稱謂:“XX”。
進(jìn)口篩網(wǎng)稱謂中的“GG、XX、XXX”含義與大家熟悉的國內(nèi)篩網(wǎng)而言,已起了較大變化,“XXX”絲徑粗,使用壽命長,“XX”尺寸穩(wěn)定,且有效篩理面積略大,表面粗糙化程度高自動分級效果好。
國產(chǎn)代號“JM”(單雙經(jīng)向重平織)、“JMG”(平紋織),現(xiàn)還推出一種“PDM”(單雙經(jīng)向重平織),規(guī)格與進(jìn)口篩網(wǎng)有差異,但相接近。
性:凡是面粉篩網(wǎng)都要求做處理,這是因為纖維與纖維、纖維與物料間的接觸和摩擦,會造成電荷在纖維表面間的轉(zhuǎn)移,產(chǎn)生靜電現(xiàn)象,又由于面粉粒度較細(xì),易被電荷吸引造成過篩困難,甚至糊網(wǎng)。
滌綸、尼龍都要進(jìn)行處理,一般有以下幾種方法:
1.表面處理:一般用劑處理;
2.聚合處理:在合成纖維聚合時,加入親水性的聚合物或?qū)щ娦缘头肿泳酆衔铮?span id="cg0c2u2ou" class="apple-converted-space">
3.導(dǎo)電纖維:如在單絲中心加入碳素或在整根單絲加入碳素;
4.采用高能輻射,如γ輻射線或電子束輻射織物,使纖維變性,提高吸濕性,增加效果。
后三種方法實際上是材料防靜電處理,屬性, 種方法屬于表面防靜電。
幅寬:隨著制粉工藝和糧機(jī)技術(shù)的發(fā)展,尤其是八輥磨及大產(chǎn)量高方平篩的出現(xiàn),確實對制粉效率的提高、產(chǎn)能的增加創(chuàng)造了條件。所以篩格也相應(yīng)伴隨著此發(fā)展方向沿標(biāo)準(zhǔn)型、擴(kuò)大型、超大型方向發(fā)展,進(jìn)口篩網(wǎng)幅寬也有1.10米、1.36米、1.54米(國產(chǎn)篩網(wǎng)幅寬1.04-1.27米),一定要根據(jù)各廠使用的篩格標(biāo)準(zhǔn)選購合適的幅寬。
Silk screen (the screen), is an important auxiliary material flour factory.
The classification and selection standards, 1 screen
The screen with the flour mill and divided by material generally have the following:
Silk screen: by strands of natural silk skein silk, and then woven, is characterized by good elasticity, not easy to loose, hole size, not easy to deformation, with good moisture absorption and desorption, is not easy to generate static electricity etc.. But do not wear, easy pilling.
Polyamide (nylon) screen by polyamide monofilament fiber woven. Wear resistant, long service life, high strength, comprehensive use of good results.
Polyester mesh, woven from polyester monofilament. High strength, not easy to deformation, but compared with nylon mesh, wear resistance and antistatic effect is slightly worse.
Foreign flour factory also has been generally used in the forties of the silk screen until the twentieth century and used, for the time being, grg screen generally have especially sieve number 14-72 (silk), three material sieve silk (No. 7 72), roughly equivalent to the size of the opening of the 1600 - 200um; screen for sifter, standard (code s, 3 - 25s), unblended sieve double and silk (code named x, 4X-17X) silk screen (code named XX, 3-17XX), three material sieve silk (code named XXX, 3XXX-18XXX) several, roughly equivalent to the mesh size of 300 - 60um.
Domestic flour mill is also commonly used silk net, tagging is a quote from abroad industry norms and, "GG" (grit Gauze) refers to the coarse screen, meaning each Vienna inches (approximately equals 1.0375 inches) within the length of the sieve number, wee patterns woven for the cutter, "XX" refers to the fine material sieve net, mainly used for sifting and half twist wee mode.
The screen annotation based on metric, such as CB, JQ, JCQ etc. have expressed per centimeter of sieve number, materials with silk, nylon and brocade silkworm intertwined, woven with plain wee, half twist wee, the twist wee and basket weing.
With the ioduction of powder production line supporting the import nylon mesh material in its long life, good performance began to cause the attention of the personage inside course of study, and directly to the size of the mesh mark and the opening size has been serialized, standardized, standardization, and consider the appellation of the industry and even inertia, respectively to "GG, XXX," correspondence, which "GG" is wee; "XXX" is plain woven enhanced and largest flour mill application of, wee patterns for single and double warp to hey flat fabric, the generic name: "XX".
Import screen name "GG, XX, XXX," meaning and the familiar domestic screen, has played a great changes, "XXX" wire diameter thick, long service life, "XX" dimensional stability and effective screen area slightly larger, surface rough degree of high automatic grg effect is good. 標(biāo)簽: 7894 789456321 亳州市蠶絲篩網(wǎng) 亳州市蠶絲篩網(wǎng)廠家注冊資金:500萬-1000萬
聯(lián)系人:閆彬彬
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移動手機(jī):17756839176
企業(yè)地址:安徽 亳州市 利辛縣