上海韋米機(jī)電設(shè)備有限公司

Z2FSK6-2-1X/2QV力士樂單向閥 

結(jié)構(gòu)原理

1）MK型單向節(jié)流閥 該閥是管式聯(lián)接的單向節(jié)流閥，其節(jié)流口采用軸向三角槽式結(jié)構(gòu)。旋轉(zhuǎn)調(diào)節(jié)螺母3，可改變節(jié)流口通流面積的大小，以調(diào)節(jié)流量。正向流動(dòng)時(shí)起節(jié)流閥作用；反向流動(dòng)時(shí)起單向閥作用，這時(shí)由于有部分油液可在環(huán)形縫隙中流動(dòng)，可以清除節(jié)流口上的沉積物。在閥體2左端有刻度槽，調(diào)節(jié)螺母3上有刻度，用以標(biāo)志調(diào)節(jié)流量的大小。

2）F型準(zhǔn)確節(jié)流閥 該閥主要由閥體1，調(diào)節(jié)件2和節(jié)流套3組成。在節(jié)流口4處實(shí)現(xiàn)對(duì)從A到B的流動(dòng)的節(jié)流。轉(zhuǎn)動(dòng)節(jié)流桿5，可調(diào)節(jié)節(jié)流斷面。由于節(jié)流口制成薄壁孔，故節(jié)流不易受溫度的影響。

節(jié)流口堵塞原因：

1、油液中的機(jī)械雜質(zhì)或因氧化析出的膠質(zhì)、瀝青、碳渣等污物堆積在節(jié)流縫隙處。

2、由于油液老化或受到擠壓后產(chǎn)生帶電的較化分子，而節(jié)流縫隙的金屬表面上存在電位差，故較化分子被吸附到縫隙表面，形成牢固的邊界吸附層，吸附層厚度一般為5~8微米，因而影響了節(jié)流縫隙的大小。以上堆積、吸附物增長(zhǎng)到一定厚度時(shí)，會(huì)被液流沖刷掉，隨后又重新附在閥口上。這樣周而復(fù)始，就形成了流量的脈動(dòng)。

3、閥口壓差較大時(shí)，因閥口溫度高，液體受擠壓的程度增強(qiáng)，金屬表面也更易受摩擦作用而形成電位差，因此壓差大時(shí)容易產(chǎn)生堵塞現(xiàn)象。

減輕節(jié)流口堵塞的措施：

1、選擇水力半徑大的薄刃節(jié)流口。

2、準(zhǔn)確過濾并定期更換油液。

3、適當(dāng)減小節(jié)流口前后的壓差。

4、采用電位差較小的金屬材料、選用舒緩反應(yīng)穩(wěn)定性好的油液、減小節(jié)流口表面粗糙度。

Z2FSK6-2-1X/2QV力士樂單向閥 

Z2FS 型閥是一種采用疊加閥板設(shè)計(jì)的雙單向節(jié)流閥。它用于限制一個(gè)或兩個(gè)執(zhí)行機(jī)構(gòu)油口的主油流量或先導(dǎo)流量。

彼此對(duì)稱排列的兩個(gè)單向節(jié)流閥可限制一個(gè)方向上的流量，同時(shí)允許相反方向上的自由回流。

如果是供油節(jié)流，則液壓油將通過由閥座 (2) 和節(jié)流閥芯 (3) 形成的節(jié)流點(diǎn) (1)，經(jīng)通道 A? 導(dǎo)入執(zhí)行機(jī)構(gòu) A?。節(jié)流閥芯 (3) 可通過調(diào)節(jié)螺釘 (4) 進(jìn)行軸向調(diào)節(jié)，從而允許調(diào)節(jié)節(jié)流點(diǎn) (1)。

從執(zhí)行機(jī)構(gòu) A? 流回的液壓油沿著節(jié)流閥芯 (3) 的方向相對(duì)彈簧 (5) 移動(dòng)閥座 (2)，從而使液壓油通過單向閥不受阻礙地流動(dòng)。根據(jù)安裝位置，節(jié)流效應(yīng)可能發(fā)生在供油或排放中。

主流量限制 （型號(hào)“2Q”）

要調(diào)節(jié)執(zhí)行機(jī)構(gòu)的速度（主流量限制），應(yīng)在方向閥和底板之間安裝雙單向節(jié)流閥。

先導(dǎo)流量限制 （型號(hào)“1Q”）

通過先導(dǎo)式方向閥，可使用雙單向節(jié)流閥來調(diào)節(jié)切換時(shí)間（先導(dǎo)流量限制）。在這種情況下，該閥安裝在先導(dǎo)控制閥和主閥之間。

Z2FSK6-2-1X/2QV力士樂單向閥供應(yīng)型號(hào)

力士樂REXROTH雙節(jié)流單向閥，直接操作Z2FS 6...XC

R901246099 Z2FS6B2-4X/S-2QXCJV

R901346900 Z2FS6-2-4X/S-1QXCJ

R901151989 Z2FS6-2-4X/S-1QXCJV

R901420268 Z2FS6-2-4X/S-2QXCJ

R901152921 Z2FS6-2-4X/S-2QXCJV

R901242941 Z2FS6-2-4X/S2-1QXCJ

R901152947 Z2FS6-2-4X/S2-1QXCJV

R901343398 Z2FS6-2-4X/S2-2QXCJV

R901152926 Z2FS6A2-4X/S-1QXCJV

R901152937 Z2FS6A2-4X/S2-1QXCJV

R901246473 Z2FS6B2-4X/S2-1QXCJV

力士樂REXROTH雙節(jié)流單向閥Z2FS 6

R900441377 Z2FS6A2-4X/1Q

R900525895 Z2FS6A2-4X/1QMIL15

R900548876 Z2FS6A2-4X/1QSO700

R900931733 Z2FS6A2-4X/1QJ

R901435985 Z2FS6A2-4X/1QJ3/60

R901435990 Z2FS6A2-4X/1QJ3V/60

R901435987 Z2FS6A2-4X/1QJ5/60

R901435994 Z2FS6A2-4X/1QJ5V/60

R900509872 Z2FS6A2-4X/1QJV

R900581526 Z2FS6A2-4X/1QV

R900427254 Z2FS6A2-4X/2Q

R901436013 Z2FS6A2-4X/2QJ3/60

R901436015 Z2FS6A2-4X/2QJ3V/60

R901436014 Z2FS6A2-4X/2QJ5/60

R901436016 Z2FS6A2-4X/2QJ5V/60

R900595235 Z2FS6A2-4X/2QJV

R900569781 Z2FS6A2-4X/2QMT

R900439389 Z2FS6A2-4X/2QV

R901228007 Z2FS6A2-4X/2QV/60

R900558981 Z2FS6A2-4X/2QV=LB

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R900507951 Z2FS6A3-4X/1QV

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R900532275 Z2FS6A5-4X/1QV

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R900710037 Z2FS6A7-4X/1Q

R900584700 Z2FS6A7-4X/1QV

R900967913 Z2FS6A7-4X/2Q

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R900464382 Z2FS6B2-4X/1Q

R901436017 Z2FS6B2-4X/1QJ3/60

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R901436018 Z2FS6B2-4X/1QJ5/60

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R987420211 Z2FS6-2-4X/1QSO026-755

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R900776256 Z2FS6-2-4X/1Q=AN

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R900416482 Z2FS6-2-4X/1QJ

R901435770 Z2FS6-2-4X/1QJ3/60

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R901435948 Z2FS6-2-4X/1QJ5/60

R901435951 Z2FS6-2-4X/1QJ5V/60

R900405544 Z2FS6-2-4X/1QJV

R900520693 Z2FS6-2-4X/1QJVSO49

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R900537744 Z2FS6-2-4X/2QSO760

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R901435955 Z2FS6-2-4X/2QJ3/60

R901435983 Z2FS6-2-4X/2QJ3V/60

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R901435984 Z2FS6-2-4X/2QJ5V/60

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R900727967 Z2FS6-2-4X/2QV/60

R901110659 Z2FS6-2-4X/2QV/62

R900577051 Z2FS6-2-4X/2QV=LB

R900441679 Z2FS6-2-4X/SO61

R900371788 Z2FS6-2-4X/VSO61

R900576449 Z2FS6-2-4X=1Q=PL

R901222502 Z2FS6-2-4X=1QV

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R901438380 Z2FS6-5-4X/1QV/60

R900505004 Z2FS6-5-4X/2Q

R900476838 Z2FS6-5-4X/2QV

R900438820 Z2FS6-7-4X/1Q

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R900442662 Z2FS6-7-4X/2Q

R900441810 Z2FS6-7-4X/2QV

R983032441 Z2FS6A5-4X/2QIN010

R983041723 Z2FS6B2-4X/1QVIN010

R983032426 Z2FS6-2-4X/1QIN010

R983032430 Z2FS6-2-4X/1QVIN010

R983032429 Z2FS6-2-4X/2QIN010

R983032428 Z2FS6-2-4X/2QVIN010

R983032440 Z2FS6-3-4X/1QVIN010

R983032438 Z2FS6-3-4X/2QVIN010

R983032437 Z2FS6-5-4X/1QVIN010

R983032431 Z2FS6-5-4X/2QVIN010

R983032436 Z2FS6-A2-4X/1QVIN010

R983032433 Z2FS6-A2-4X/2QVIN010

R983032432 Z2FS6-A5-4X/2QVIN010

R983032435 Z2FS6-B5-4X/2QVIN010

力士樂REXROTH單向節(jié)流閥Z2FS 10

R900989094 Z2FS10-3-3X/

R900523737 Z2FS10-3-3X/V

R983032448 Z2FS10-3-3X/VIN010

R900989095 Z2FS10-5-3X/

R901246286 Z2FS10-5-3X/J

R900536467 Z2FS10-5-3X/JV

R900537745 Z2FS10-5-3X/SO760

R900517812 Z2FS10-5-3X/V

R900080934 Z2FS10-5-3X/VSO450

R900051691 Z2FS10-5-3X/V=LB

R901427672 Z2FS10-5-3X=J3

R900072790 Z2FS10-5-3X=V

R900220059 Z2FS10-5-3X=V=PL

R900989096 Z2FS10-7-3X/

R900523926 Z2FS10-7-3X/V

R900989097 Z2FS10A3-3X/S

R900989098 Z2FS10A3-3X/S2

R900569858 Z2FS10A3-3X/S2V

R900524995 Z2FS10A3-3X/SV

R900215040 Z2FS10A5-3X/JV

R900989099 Z2FS10A5-3X/S

R900571890 Z2FS10A5-3X/S2

R900989100 Z2FS10A5-3X/S2

R900523578 Z2FS10A5-3X/S2V

R900517813 Z2FS10A5-3X/SV

R900989101 Z2FS10A7-3X/S

R900989102 Z2FS10A7-3X/S2

R900032241 Z2FS10A7-3X/S2V

R900526683 Z2FS10A7-3X/SV

R900989103 Z2FS10B3-3X/S

R900989104 Z2FS10B3-3X/S2

R900071261 Z2FS10B3-3X/S2V

R900057401 Z2FS10B3-3X/SV

R900989105 Z2FS10B5-3X/S

R900989106 Z2FS10B5-3X/S2

R900517814 Z2FS10B5-3X/S2V

R900520680 Z2FS10B5-3X/SV

R900989107 Z2FS10B7-3X/S

R900989108 Z2FS10B7-3X/S2

R900033142 Z2FS10B7-3X/S2V

R900562269 Z2FS10B7-3X/SV

R983032447 Z2FS107-3X/VIN010

R983032443 Z2FS10B5-3X/SVIN010

R978915815 Z2FS10-3-3X/VSO30

R983032449 Z2FS10-5-3XIN010

R983032442 Z2FS10-5-3X/VIN010

R983032445 Z2FS10-A5-3X/S2VIN010

R983040208 Z2FS10-A5-3X/SVIN010

R983032444 Z2FS10-A5-3X/VIN010

R983032446 Z2FS10-B5-3X/S2VIN010

力士樂REXROTH單向節(jié)流閥Z2FS 16

R900449754 Z2FS16-3X/

R900406113 Z2FS16-3X/J

R900411029 Z2FS16-3X/SSO30

R900485270 Z2FS16-3X/S/5

R900388243 Z2FS16-3X/S1

R900061072 Z2FS16-3X/S2SO30

R900485266 Z2FS16-3X/S2/5

R900519092 Z2FS16-3X/S2VSO68

R900328147 Z2FS16-3X/SJSO3

R900406344 Z2FS16-3X/V

R900459203 Z2FS16-8-3X/S

R900457256 Z2FS16-8-3X/S2

R900073408 Z2FS16-8-3X/S2=LB

R900476035 Z2FS16-8-3X/S2J

R901413310 Z2FS16-8-3X/S2J3

R901413311 Z2FS16-8-3X/S2J3V

R900417999 Z2FS16-8-3X/S2JV

R900473688 Z2FS16-8-3X/S2V

R900419300 Z2FS16-8-3X/SJ

R901413313 Z2FS16-8-3X/SJ3

R901413315 Z2FS16-8-3X/SJ3V

R901293907 Z2FS16-8-3X/SJV

R900470529 Z2FS16-8-3X/SV

R900073409 Z2FS16-8-3X/SV=LB

R900426851 Z2FS16A8-3X/S

R900348227 Z2FS16A8-3X/S2

R900591255 Z2FS16A8-3X/S2V

R900591254 Z2FS16A8-3X/SV

R900498950 Z2FS16B8-3X/S

R900498949 Z2FS16B8-3X/S2

R901400150 Z2FS16B8-3X/S2V

R971L20010 Z2FS16-3X/S

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R971893673 Z2FS16-3X/S2

R971L20011 Z2FS16-3X/S2

R971L20038 Z2FS16-3X/S2V

R971894104 Z2FS16-3X/S2V

R978897151 Z2FS16-3X/SVSO43A-1410B

R971053346 Z2FS16-8-3X/SV

力士樂REXROTH單向節(jié)流閥Z2FS 22

R900449753 Z2FS22-3X/

R900485273 Z2FS22-3X/S/5

R900398238 Z2FS22-3X/S2SO60

R900485269 Z2FS22-3X/S2/5

R900474737 Z2FS22-3X/S2J

R900449852 Z2FS22-3X/S2JV

R900488912 Z2FS22-3X/SJ

R900507948 Z2FS22-3X/SVSO62

R900519405 Z2FS22-3X/SVSO68

R900472678 Z2FS22-3X/V

R900456783 Z2FS22-8-3X/S

R900443176 Z2FS22-8-3X/S2

R900414243 Z2FS22-8-3X/S2SO8

R900468786 Z2FS22-8-3X/S2V

R900474580 Z2FS22-8-3X/SV

R900072643 Z2FS22-8-3X=S2

R901287213 Z2FS22A8-3X/S2V

R901339001 Z2FS22A8-3X/SV

R900595835 Z2FS22B8-3X/S

R901272651 Z2FS22B8-3X/S2V

R901272652 Z2FS22B8-3X/SV

R971893674 Z2FS22-3X/S

R971L20012 Z2FS22-3X/S

R971L20013 Z2FS22-3X/S2

R971893675 Z2FS22-3X/S2

R971L20042 Z2FS22-3X/SV

力士樂REXROTH節(jié)流閥Z1FG

電磁鐵包括開關(guān)式和比例式兩種，開關(guān)式電磁鐵常被安裝在換向閥上，用來控制閥的換向、系統(tǒng)的卸荷和加載等；比例式電磁鐵安裝在各類比例閥上，用來控制液流的方向、壓力和流量。不少比例壓力閥安裝在電控變量泵上，可以控制泵的和流量和方向。