*威(wei)格(ge)士VICKERS換向閥產(chǎn)(chan)品(pin)概(gai)述：

本公(gong)司(si)現(xiàn)貨*威(wei)格(ge)士VICKERS換向閥，下面(mian)我(wo)為大(da)家重(zhong)點(diǎn)介紹壹(yi)下威(wei)格(ge)士換向閥的技(ji)術(shù)資(zi)料：威(wei)格(ge)士VICKERS換向閥的主閥按配合(he)形式不(bu)同(tong)可(ke)分(fen)為三(san)級(jí)同(tong)心(xin)、二級(jí)同(tong)心(xin)和(he)滑閥式三(san)類(lei)．其(qi)中(zhong)滑閥式結(jié)(jie)構(gòu)(gou)工(gong)作(zuo)壓力低(di)，控(kong)制(zhi)壓力精度(du)不(bu)高(gao)；三級(jí)同(tong)心(xin)結(jié)(jie)構(gòu)雖(sui)成(cheng)熟(shu)，目(mu)前應(yīng)用較廣，但(dan)與(yu)二級(jí)同(tong)心(xin)式(shi)比較，不(bu)及二級(jí)同(tong)心(xin)式(shi)動(dòng)(dong)作(zuo)靈敏(min)，規(guī)(gui)格(ge)相(xiang)同(tong)，行程(cheng)相(xiang)同(tong)時(shí)，二級(jí)同(tong)心(xin)結(jié)(jie)構(gòu)的通油(you)能力(li)遠(yuǎn)(yuan)大(da)於三級(jí)同(tong)心(xin)結(jié)(jie)構(gòu)；二級(jí)同(tong)心(xin)式(shi)控(kong)制(zhi)壓力穩(wěn)定(ding)，加工(gong)工(gong)藝性好(hao)，二級(jí)同(tong)心(xin)式(shi)應(yīng)用前景廣闊(kuo)，這(zhe)裏以二級(jí)同(tong)心(xin)結(jié)(jie)構(gòu)，討(tao)論其(qi)結(jié)(jie)構(gòu)(gou)尺(chi)寸設(shè)計(jì)(ji)方法(fa)．威格(ge)士VICKERS換向閥出(chu)來的先導(dǎo)(dao)油(you)控(kong)制(zhi)主換向閥閥(fa)芯(xin)的移動(dòng)(dong)，使工作(zuo)泵(beng)的來油(you)進(jìn)入動(dòng)(dong)臂油(you)缸實(shí)(shi)現(xiàn)動(dòng)(dong)臂上升(sheng)。比例先導(dǎo)(dao)減壓閥的輸出(chu)壓力越(yue)大(da)，控(kong)制(zhi)主換向閥閥(fa)芯(xin)的位移(yi)越(yue)大(da)，主換向閥通過(guo)的流(liu)量(liang)越(yue)大(da)，動(dòng)(dong)臂上升(sheng)的速(su)度(du)越快。當(dāng)(dang)操(cao)作(zuo)手柄(bing)拉(la)*限位置(zhi)時(shí)，手柄(bing)中(zhong)的限位電(dian)磁鐵(tie)通電(dian)，手柄(bing)在(zai)極限位置(zhi)被吸合(he)。動(dòng)(dong)臂以zui大(da)的速(su)度(du)上升(sheng)，當(dāng)(dang)升(sheng)至(zhi)動(dòng)(dong)臂上位限位開(kai)關(guān)(guan)所限定(ding)的位置(zhi)時(shí)，操作(zuo)手柄(bing)限位電(dian)磁鐵(tie)斷(duan)電(dian)，手柄(bing)自(zi)動(dòng)(dong)恢復(fù)到中位，動(dòng)(dong)臂就可(ke)保(bao)持在所限定(ding)的位置(zhi)。在(zai)動(dòng)(dong)臂上升(sheng)的過(guo)程(cheng)中(zhong)，若(ruo)需要?jiǎng)?dong)臂在某壹(yi)位置(zhi)停(ting)留，則(ze)需將操(cao)作(zuo)手柄(bing)退(tui)回中位。伊(yi)頓(dun)Vickers威格(ge)士換向閥DG4V系(xi)列特點(diǎn)特點(diǎn)是(shi)利(li)用閥(fa)芯(xin)在閥(fa)體孔內(nèi)(nei)作(zuo)相(xiang)對(duì)運(yùn)(yun)動(dòng)(dong)，使油(you)路接通或(huo)切斷而(er)改(gai)變油(you)流(liu)方向(xiang)的閥。威(wei)格(ge)士換向閥的分類(lei)：按(an)結(jié)構(gòu)形(xing)式可(ke)分(fen)：滑閥式、轉(zhuǎn)(zhuan)閥(fa)式(shi)、球閥(fa)式(shi)。按(an)閥體連(lian)通的主油(you)路數(shù)可(ke)分(fen)：兩(liang)通、三(san)通、四(si)通等(deng)。按(an)閥芯(xin)在閥(fa)體內(nèi)(nei)的工作(zuo)位置(zhi)可(ke)分(fen)：兩(liang)位、三(san)位、四(si)位等(deng)。按(an)操作(zuo)閥芯(xin)運(yùn)動(dòng)(dong)的方式(shi)可(ke)分(fen)：手(shou)動(dòng)(dong)、機(jī)動(dòng)(dong)、電(dian)磁動(dòng)(dong)、液(ye)動(dòng)(dong)、電(dian)液(ye)動(dòng)(dong)等(deng)。按(an)閥芯(xin)定(ding)位方式(shi)分(fen)：鋼球定(ding)位式(shi)、彈(dan)簧(huang)復(fù)(fu)位式(shi)。*威(wei)格(ge)士VICKERS換向閥結(jié)(jie)構(gòu)(gou)圖如(ru)下：

下面(mian)以滑閥式Vickers威(wei)格(ge)士換向閥為例(li)講解期工(gong)作(zuo)原理。
Vickers威(wei)格(ge)士滑閥式換向閥的結(jié)構(gòu)(gou)
閥(fa)芯(xin)與(yu)閥(fa)體(ti)孔配合(he)處為臺(tái)(tai)肩，閥體孔內(nèi)(nei)溝通油(you)液(ye)的環(huán)(huan)形(xing)槽為沈(chen)割(ge)槽。閥(fa)體(ti)在沈(chen)割(ge)槽處有(you)對(duì)外連(lian)接油(you)口。
閥(fa)芯(xin)臺(tái)肩(jian)和(he)閥體(ti)沈(chen)割(ge)槽可(ke)以是(shi)兩(liang)臺(tái)肩(jian)三(san)沈(chen)割(ge)槽，也可(ke)以是(shi)三(san)臺(tái)(tai)肩(jian)五沈(chen)割(ge)槽。當(dāng)(dang)閥(fa)芯(xin)運(yùn)動(dòng)(dong)時(shí)，通過(guo)閥芯(xin)臺(tái)肩(jian)開啟(qi)或封(feng)閉閥(fa)體(ti)沈(chen)割(ge)槽，接通或(huo)關(guān)(guan)閉與(yu)沈(chen)割(ge)槽相(xiang)通的油(you)口。
1.手(shou)動(dòng)(dong)（機(jī)動(dòng)(dong)）Vickers威格(ge)士換向閥
閥(fa)芯(xin)運(yùn)動(dòng)(dong)是(shi)藉助(zhu)於機(jī)械(xie)外力實(shí)(shi)現(xiàn)的。其(qi)中(zhong)，手(shou)動(dòng)(dong)換向閥又分為手(shou)動(dòng)(dong)和(he)腳踏兩(liang)種；機(jī)動(dòng)(dong)換向閥則(ze)通過(guo)安(an)裝在(zai)運(yùn)動(dòng)(dong)部(bu)件(jian)上(shang)的撞塊(kuai)或凸(tu)輪推(tui)動(dòng)(dong)閥芯(xin)。特點(diǎn)是(shi)工(gong)作(zuo)可(ke)靠(kao)。根(gen)據(jù)閥(fa)芯(xin)的定(ding)位方式(shi)分(fen)為：彈(dan)簧(huang)鋼(gang)球定(ding)位式(shi)和(he)彈(dan)簧(huang)自(zi)動(dòng)(dong)復(fù)位式(shi)。
2.Vickers威(wei)格(ge)士電(dian)磁換向閥
閥(fa)芯(xin)運(yùn)動(dòng)(dong)是(shi)藉助(zhu)於電(dian)磁力(li)和(he)彈(dan)簧(huang)力(li)的共同(tong)作(zuo)用。電(dian)磁鐵(tie)不(bu)得電(dian)，閥芯(xin)在右端彈(dan)簧(huang)的作(zuo)用下，處於左位置(zhi)（右位），油(you)口p與(yu)A通，B不(bu)通；電(dian)磁鐵(tie)得電(dian)產(chǎn)生(sheng)壹(yi)個(gè)(ge)電(dian)磁吸(xi)力(li)，通過(guo)推(tui)桿(gan)推(tui)動(dòng)(dong)閥芯(xin)右移，則閥左(zuo)位工(gong)作(zuo)，油(you)口p與(yu)B通，A不(bu)通。
電(dian)磁鐵(tie)可(ke)以是(shi)直流(liu)、交(jiao)流(liu)或(huo)交(jiao)本整(zheng)流(liu)的。
兩(liang)位電(dian)磁閥(fa)有(you)彈(dan)簧(huang)復(fù)(fu)位式(shi)（壹(yi)個(gè)(ge)電(dian)磁鐵(tie)）和(he)鋼球定(ding)位式(shi)（兩(liang)個(gè)(ge)電(dian)磁鐵(tie)）。
如(ru)果(guo)將兩(liang)端電(dian)磁鐵(tie)與(yu)彈(dan)簧(huang)對(duì)中(zhong)機(jī)構(gòu)(gou)組(zu)合，又可(ke)組(zu)成(cheng)三(san)位的電(dian)磁換向閥，電(dian)磁鐵(tie)得電(dian)分別(bie)為左(zuo)右位，不(bu)得電(dian)為中(zhong)位（常(chang)位）。
電(dian)磁吸(xi)力(li)有(you)限，電(dian)磁換向閥zui大(da)通流(liu)量(liang)小(xiao)於100 L/min。對(duì)液(ye)動(dòng)(dong)力較大(da)的大(da)流(liu)量(liang)閥(fa)則(ze)應(yīng)選(xuan)用液(ye)動(dòng)(dong)換向閥或(huo)電(dian)液(ye)換向閥。
3.Vickers威(wei)格(ge)士電(dian)液(ye)換向閥
電(dian)液(ye)換向閥是(shi)由(you)電(dian)磁換向閥與(yu)液(ye)動(dòng)(dong)換向閥組(zu)合(he)而成(cheng)，液(ye)動(dòng)(dong)換向閥實(shí)(shi)現(xiàn)主油(you)路的換向，稱為主閥；電(dian)磁換向閥改(gai)變(bian)液(ye)動(dòng)(dong)閥控(kong)制(zhi)油(you)路的方向(xiang)，稱為先導(dǎo)(dao)閥?，F(xiàn)貨*威(wei)格(ge)士VICKERS換向閥