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Parker派克方向控制閥%徐州PARKER柱塞泵

Parker派克方向控制閥活塞桿端部的拉鉤間有一空行程s1，實現空程快速趨近，然后再帶動液壓缸活塞，通過節流阻尼，實現慢進。返程時也是先走空行程s1，再與液壓活塞一起運動，通過單向閥，實現快退。
表42.2-3氣-液阻尼缸調速特性及應用 調速方式 結構示意圖 特性曲線 作用原理 應用
雙向節流調速在氣-液阻尼缸的回油管路裝設可調式節流閥，使活塞往復運動的速度可調并相同適用于空行程及工作行程都較短的場合（s＜20mm）
單向節流調速將一單向閥和一節流閥并聯在調速油路中?；钊蛴疫\動時，單向閥關閉，節流慢進；活塞向左運動時，單向閥打開，不經節流快退。適用于空行程較短而工作行程較長的場合
快速趨近單
向節流調速將液壓缸的?點與α點用管路相通，活塞開始向右運動時，右腔油經由fgea回路直接流入α端實現快速趨近，當活塞移過?點，油只能經節流閥流入α端，實現慢進，活塞向左運動時，單向閥打開，實現快退。由于快速趨近，節省了空程時間，提高了勞動生產率Parker派克方向控制閥與直接作用自力式控制閥類似，其設定信號由指揮器的設定彈簧設置。

Parker派克方向控制閥%徐州PARKER柱塞泵

Parker派克方向控制閥閥的主閥一般來說和換向閥一樣是滑閥結構，只不過閥芯的換向不是靠電磁
鐵來推動，而是靠前置級閥輸出的液壓力來推動，這一點和電液換向閥比較相似，只 不過電液換向閥的前置級閥是電磁換向閥，而伺服閥的前置級閥是動態特性比較好的
噴嘴擋板閥或射流管閥。 也就是說，伺服閥的主閥是靠前置級閥的輸出壓力來控制的，而前置級閥的壓力 則來自于伺服閥的入口 p，假如 p
口的壓力不足，前置級閥就不能輸出足夠的壓力來 推動主閥芯動作。Parker派克方向控制閥而我們知道，當負載為零的時候，如果四通滑閥*打開，p 口壓力＝t
口壓力 ＋閥口壓力損失（忽略油路上的其它壓力損失），如果閥口壓力損失很小，t 口壓力 又為零， 那么 p 口的壓力就不足以供給前置級閥來推動主閥芯，
整個伺服閥就失效了。 所以伺服閥的閥口做得偏小，即使在閥口全開的情況下，也要有一定的壓力損失，來 維持前置級閥的正常工作。
伺服閥其實缺點極多：能耗浪費大、容易出故障、抗污染能力差、價格昂貴等等 等等，好處只有一個：動態性能是所有液壓閥中zui高的。就憑著這一個優點，在很多
對動態特性要求高的場合不得不使用伺服閥，如飛機火箭的舵機控制、汽輪機調速等 等。

DX1-606-713CC

AR200-8
OO3371002
F07-200-M1TG
PHS-530BP
CL-D-C73
CL-D-A54
AS-10 R3/8
AS-15 R1/2
AS-6 R1/8
BK80
BK40
JSB-20
AFR320-10-40
AFR420-15-AD41
PAJS-M26
PHS530-M5
PHS530-M4
PHS530-M6
PHS530C-10
14F11BB
10F15ED
14R113FC
PHS520S-8
PECS-24V
PHS530S-10
M/7248
R07-100-RNKG
PHS530D-10
PHS540S-15
PHS540S-10
PHS540D-15
PXB-B493
DX1-606-713DC
DX1-606-713JC
DX1-606-713NC
DX1-611-711AC
DX1-611-711CC
DX1-611-711DC
DX1-611-711JC
DX1-611-713
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DX1-621-713
DX1-621-713AC
DX1-621-713CC
DX1-621-713DC
DX1-621-713JC
DX1-621-713NC
PHS530S-10
M/7248
R07-100-RNKG
PHS530D-10
PHS540S-15
PHS540S-10
PHS540D-15
PHS540D-10
DX2-406-70
DX2-411-70
DX2-413-70
DX2-416-70
DX2-421-70
DX2-451-70
DX2-606-711AC
DX2-606-711CC
DX2-606-711DC
DX2-606-711JC
DX2-606-713
DX2-606-713AC
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FFM6-316
FFM8-316
M10CU6-316
M10FA1/4N-316
M10FSC1/2N-316
M10FSC1/4K-316
M10FSC1/4N-316
M10FSC3/8N-316
M10GC1/2R-316
M10GC1/4R-316
BK80
BK40
JSB-20AFR320-10-40AFR420-15 AD41PAJS-M26
M10MA3/8N-316
M10MBT3/8N-316
M10MSC1/2K-316
M10MSC1/2N-316
M10MSC1/4K-316
M10MSC1/4N-316
M10MSC1/4R-316
M10MSC3/4N-316
M10MSC3/8K-316
M10MSC3/8N-316
M10MSC3/8R-316
M10MSEL1/2N-316
M10MSEL1/4K-316
M10MSEL1/4N-316
M10MSEL3/8K-316
M10MSEL3/8N-316
M10RUM6-316
PHS530S-10-24V-DL現貨
PHS530D-10-24V-DL 現貨
PHS530C-10現貨OO3371002
VP04-14-2433 ,20070120 
221G1603/491514Q3
F07-200-M1TG
PHS-530BP
CL-D-C73
CL-D-A54
PHS530D-10
PHS540S-15
PHS540S-10
PHS540D-15
PHS540D-10
VE43-A-S-5
14R113FC
322H7506
10C10-050 
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放大閥L6653822153
PQDXXA-Z00 
PXB-B1911
02FA06A派克過濾器342Y312UNM0
PK322HLL01派克密封
PK602HLL01派克密封
PK2AHL0251派克密封
VE43-A-S-5
P3MEA16ESABNNN 氣源處理器
6.000D2MAUV14AC*8.000 派克氣缸
PHS530C-10 220VDC 派克氣動元件現貨供應
DX2-611-713MC DC24V
DX2-616-713MC
PHS520S-8
PECS-24V
PHS530S-10
M/7248
PHS530P-10 底座
PHS530C-10-24V現貨--1150元
DA6020BNJW
801234-AAA-AR
04F20C3108A3FGC8008 
7321BDN00/481865C2
7131Z002N0H111Q3
PEC5-220V-D含插座
VP04-14-2433+20070120
PL2-3/8-70底座708N4 220V 螺紋
491514Q3 CCP230M 230VDC 19W+插頭
PWD00A-400
14R113FC
PECS-24V
PHS530S-10
M/7248
R07-100-RNKG
71215SN2MF00N0H111P3
71215SN2MF00N0H111P3
GDCS-CA100X125-Y
GDC100的密封件
GDCS-CA100X200-Y
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B74G-4GK-QP3-RMN 
B73G-2GK-QT3-RMN
PVD-B1414
72218BG5VV00 
GDCS-TM63X1000-Y
E321F32 DC220
PHS530C-10
14F11BB
10F15ED
14R113FC
PHS520S-8
PHS320S-8-110V-D
PHS320S-8-110V-DL
PHS320S-8-110V-D-L
PHS320S-8-110V-DL-L
PHS320S-8-12V-D
PHS320S-8-12V-D-L
PHS320S-8-240V-D
PHS320S-8-240V-DL
PHS320S-8-240V-D-L
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PHS320S-8-24AC-D
PHS320S-8-24AC-D-L
PHS320S-8-24V-D
PHS320S-8-24V-DL
PHS320S-8-24V-D-L
PHS320S-8-24V-DL-L
PHS320S-8-L
PHS520-BP
PHS520C-8
PHS520C-8-110V-DL
PHS520C-8-110V-D-L
PHS520C-8-110V-DL-L
PHS520C-8-12V-D
PHS520C-8-12V-D-L
PHS520C-8-240V-D V
PHS520C-8-240V-DL
PHS520C-8-240V-D-L
PHS520C-8-240V-DL-L
PHS520C-8-24AC-D
PHS520C-8-24AC-DL
PHS520C-8-24AC-D-L
PHS520C-8-24AC-DL-L
PHS520C-8-24V-D
PHS520C-8-24V-DL
PHS520C-8-24V-D-L
PHS520D-8
PHS520D-8-110V-D
PHS520D-8-110V-DL
PHS520D-8-110V-D-L
PHS520D-8-110V-DL-L
PHS520D-8-12V-D
PHS520D-8-12V-D-L
PHS520D-8-240V-D
PHS520D-8-240V-DL
PHS520D-8-240V-D-L
PHS520D-8-240V-DL-L
PHS520D-8-24AC-D
PHS520D-8-24AC-DL
PHS520D-8-24AC-D-L
PHS520D-8-24AC-DL-L
PHS520D-8-24V-D
PHS520D-8-24V-DL
PHS520D-8-24V-D-L
PHS520D-8-24V-DL-L
PHS520D-8-L
PHS520E-8
PHS520E-8-110V-D
PHS520E-8-110V-DL
PHS520E-8-110V-D-L
PHS520E-8-110V-DL-L
PHS520E-8-12V-D
PHS520E-8-12V-D-L
PHS520E-8-240V-D
PHS520E-8-240V-DL
PHS520E-8-240V-D-L
PHS520E-8-240V-DL-L
PHS520E-8-24AC-
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PHS520E-8-24V-D
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PHS520-M4
PHS520-M5
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PHS520P-8-110V-D
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PHS520P-8-110V-D-L
PHS520P-8-110V-DL-L
PHS520P-8-12V-D
PHS520P-8-12V-D-L
PHS520P-8-240V-D
PHS520P-8-240V-DL
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PHS520P-8-24AC-D
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PHS520P-8-L
PHS520S-8
PHS520S-8-110V-D
PHS520S-8-110V-DL
PHS520S-8-110V-D-L
PHS520S-8-110V-DL-L
PHS520S-8-12V-D
PHS520S-8-12V-D-L
PHS520S-8-240V-D
PHS520S-8-240V-DL
PHS520S-8-240V-D-L
PHS520S-8-240V-DL-L
PHS520S-8-24AC-D V
PHS520S-8-24AC-D-L
PHS520S-8-24V-D
PHS520S-8-24V-DL
PHS520S-8-24V-D-L
PHS520S-8-24V-DL-L
PHS520S-8-L