在術語上講,齒輪泵也叫正排量裝置,即像一個缸筒內的活塞,當一個齒進入另一個齒的流體空間時,因為液體是不可壓縮的,所以液體和齒就不能在同一時間占據同一空間,這樣,液體就被機械性地擠排出來。由于齒的不斷嚙合,這一現象就連續在發生,因而也就在泵的出口提供了一個連續排除量,泵每轉一轉,排出的量是一樣的。隨著驅動軸的不間斷地旋轉,泵也就不間斷地排出流體。泵的流量直接與泵的轉速有關。 對于粘度或密度在工藝中有變化的流體,這種泵不會受到太多影響。如果有一個阻尼器,比如在排出口側放一個濾網或一個限制器,泵則會推動流體通過它們。如果這個阻尼器在工作中變化,亦即如果濾網變臟、堵塞了,或限制器的背壓升高了,則泵仍將保持恒定的流量,直至達到裝置中最弱的部件的機械極限(通常裝有一個扭矩限制器)。
為了減少隔擋處的磨損,就需要設置幾個盲孔,該盲孔在與一個壓油柱塞缸相通時,充滿壓力油液,在緊接著切斷時,孔內的油液這時就起著類似彈簧的作用,從而使配油盤接觸表面卸荷和改善潤滑條件。盲孔的尺寸設計通常取為:直徑1.5~2.0毫米,深度6~8毫米。
德國力士樂柱塞泵型號:
A10VSO100DFLR/31R-PPA12K26
A10VSO140DFLR/31R-PPB12N00
A4VG125HDMT1-32R-NSF02F691S-S
A4VG90EP2DT1/32L-NAFO2F001D
A4VSG40HS1/10R-VPB10N000N
A10VSO140DFR1/31R-PPB12N00
A4VSG40HD1D/10R-PZB10N000N
A4VSG71HW/10R-PPB10H029F
柱塞泵
A4VSG250HS1/30R-PPB10N000N
A4VG71DWDMT2/23L-NZF02F041D泵
A4VS0500HSK/30R-PPH13N0010SET
A4VS0180DR/22R-PPB13N00
A10VSO140DFLR/31R-PPB12N00
A4VG250HD1D1/32R-NSD10F001D
A4VSO180DRG/30R-PZB1+A4VSO40DRG/10R-PZB13
A4VS0250DR/30RPPB13N00
A4VS0125DFR/30R-PPB13N00
A4VSG250EO1/22R-PPB10N000N
A4VSG250HSE/30R-PPB10N000N
A4VS0125DR/3XR
A4VSO71DR/10R-PPB13N00
A4VSO40EO/31L-P2BBN00
A4VG180EP2MT1/32RNZD02F0215
A4VG125HDM1/32R-NSF02F691S-S
A4VG71DWDMT2/23L-NZF02F041D泵
A4VSO500HS4/30R-PZH25N00
A10VSO45DFR/31R-PPA12K68
A4VS0250HD1GB/30R-PZB13K35-S
A10VSO140DR/31R-PPB12N00
A4VSO500HS4/30R-PZH25N00
A4VS0125DFR/30R-PPB13N00
A4VSO125DR/30R-PB13N00-SO127
A4VSG40EM2009/10R-PZB10N000N
A4VSG250EO1/22R-PPB10N000N
A4VSG250HD1D/30R-PPB10K349N
A4VSO40EO/31L-P2BBN00
A4VSG71EO1K/10R-PPB10H049N
軸向柱塞泵主泵
A10V028DR/31R-PSC12N00
A4VS0180DR/30R-PPB13N00
A4VSO180DR/30R-PPB12NOOS1057
A4VSG250HW/30R-PPB10N000N
A4VSG250EO1/30R-PPB10H009F
A4VS0250DRG/30R-PPB13N00E-
A4VG90EP2DT1/32R-NAF02F00
A4VG125EP2D1/32R-NAF02K691EP-4
A4VSO180DR/-30R-PPB13N00
A4VG71DWDMT2/23L-NZF02F041D泵
A4VSG71HD1U/10R-PPB10N000N
A4VG125DA2D2/32R-NAF02F021DT
A4VG90EP2DT1/32L-NAFO2F001D
A4VSG40EM2009/10R-PZB10N000N
A4VSG250HD1P/30R-PPB10G300N
A4VSO71DR/10R-PPB13N00
A4VSG40EO1/10R-PPB10K019N
A4VS0125DR/10R-PPB13N00
A4VSG71EO1/10R-PPB10N00
A4VS0500HSK/30R-PPH13N0010SET
AA10VSO100DFR/31L-PKC62K03
A4VSG71EM3136/10R-PPB10K019N
A4VG71EP/32R-NAF02F011S
E-A4VSO125DRPPB13NOO
A4VS0250LR3G/30R-PZB13N00-S0
A4VG250HD1D1/32R-NSD10F001D
A4VS0250HD1GB/30R-PZB13K35-S
(1)隨著柱塞數的增加,無論偶數柱塞泵還是奇數柱塞泵,流量脈動率都下降。(2)相鄰柱塞數相比,奇數柱塞泵的脈動流量遠小于偶數柱塞泵的脈動率。 軸向柱塞泵均采用圓柱形柱塞.根據柱塞頭部結構,有三種型式,(1)點接觸式柱塞,(2)線接觸式柱塞,(3)帶滑靴的柱塞.選用帶滑靴的柱塞,柱塞頭部同樣裝有一個擺動頭, 稱滑靴,可繞柱塞球頭中心擺動.滑靴與斜盤間為面接觸,接觸應力小,能承受較高的工作壓力.高壓油液還可以通過柱塞中心孔,沿滑靴平面泄露,保持與斜盤之間有一層油膜潤滑,從而減少了摩擦和磨損,使壽命大大提高.目前大多采用這種形式軸向柱塞泵.
s19hms220
以上型號不全,可來電咨詢~~● 新聞:A10VSO140DFLR/31R-PPB12N00每周回顧:http://www.jdzj.com/chanpin/ku1_2798315.html