困油現(xiàn)象的危害: 徑向不平衡力很大時(shí)能使軸彎曲,齒頂與殼體接觸,同時(shí)加速軸承的磨損,降低軸承的壽命。 消除困油的方法,通常是在兩側(cè)蓋板上開(kāi)卸荷槽,使封閉腔容積減小時(shí)通過(guò)左邊的卸荷槽與壓油腔相通,容積增大時(shí)通過(guò)右邊的卸荷槽與吸油腔相通。 對(duì)稱(chēng)布置的雙卸荷槽的位置,應(yīng)保證如下條件: (a)當(dāng)困油容積開(kāi)始由大變小、液體受擠壓時(shí),該容積應(yīng)與壓油腔相通。 (b)當(dāng)困油容積為最小時(shí),壓油腔應(yīng)與吸油腔隔開(kāi)。 (c)當(dāng)困油容積開(kāi)始由小變大時(shí),該容積應(yīng)與吸油腔相通。 (1)對(duì)稱(chēng)布置的雙矩形卸荷槽
齒輪泵是一種容積式泵,其結(jié)構(gòu)輕便緊湊,制造簡(jiǎn)單,工作可靠,維護(hù)保養(yǎng)方便。一般具有輸送流量小輸送壓力高的特點(diǎn),且用于輸送黏性較大的液體。但工藝要求高,不易獲得精準(zhǔn)的匹配。隨著齒輪泵在結(jié)構(gòu)上的不斷完善,它也被用于中壓、高壓液壓系統(tǒng)中,因此研究齒輪泵對(duì)農(nóng)業(yè)和工業(yè)均有重要的意義。
德國(guó)力士樂(lè)柱塞泵型號(hào):
A4VSG250HS1/30L-PPB10N000N
A4VS040DR-PPB13N00
A4VS0250LR3G/30R-PZB13N00-S0
A4VG90HWDL1/32L-NZF02F001S-SB
A4VSG250EO2/30R-PPB10H020N
A4VS0500HSK/30R-PPH13N0010SET
軸向柱塞泵E-A4VSO250EO2/30R-VPB25N00-SO3
A4VS0250E01/30R-PPBN00-S036
A4VSG40HS1/10R-PPB10N00
A4VSO180DRG/30R-PZB1+A4VSO40DRG/10R-PZB13
A4VSG250EM2044/30R-PPB10H029N
A4VSG40HD1D/10R-PPB10K019N
A4VSG250HS/10R-PPB10N00
A4VS0125LR2N/22L-PZB13A00
A4VSG71HW/10R-PPB10H029F
A4VSO71DR/10R-PPB13N00
A4VSG71HD1D/10R-PPB10H029N
A4VSG250EO1/22R-PPB10N000N
AE-A10VSO140D/31R-PPB12N00
A10VSO45DFR1/31R-PPA12N00
A10VS018DR/31R-PPA12N00
柱塞泵A4VSG750HD/22R-PPH10NOO
A4VS040DR-PPB13N00
柱塞泵A4VSG750HD/22R-PPH10NOO
A4VSG40EM2009/10R-PPB10K310N
A4VSG250HD1D/30R-PPB10K269N
A4VG180EP2MT1/32RNZD02F0215
A4VG125HD1DT1/32R-NSF02F001S
A4VSG71EO1/10R-PPB10N00
A4VS040DR/10X-PPB13N00
AA10VSO100DFR/31L-PKC62K03
A4VG56EZ2DM1/32L-NSC02F013SH-K
柱塞泵
A4VSG250DP/30R-PPB10N00
A4VG125HDMT1/32R-NSFO21S-S
A4VSG250EM3066/30R-PPB10N009N
A4VSG250HD1T/30R-PPB10N000N
A4VSO71EO2/10R-PPB13NOO
A4VG125HD1D2/32R-NSF001S
A4VS0125LR2N/22L-PZB13A00
A4VSG250EM1007/30R-PPB10H029F
A10VSO100DFLR/31R-PPA12K26
A4VG71EPDT1/32R-NAF02F011S
A4VSG71EM3120/10R-PPB10K019N
A4VS0250E01/30R-PPBN00-S036
液壓馬達(dá)
A4VS0125DRG/30R-PPB13N00
A10VSO140DFLR/31R-PPB12N00
A4VS040DR-PPB13N00
A4VS0250DR/22R-PPB13N00
A4VS0125DR/30R-PPB13N00
A4VSG250EM2044/30R-PPB10H029N
A10VS018DR/31R-PPA12N00
A4VS0125LR2N/22L-PZB13A00
A4VSG40HS1/10R-VPB10N000N
A4VSG71HD1D/10R-PPB10K33ON
A4VSG250HS1/30R-PPB10N000N
A4VSO180DR/3XR-PPB13N00
柱塞泵A4VSG750HD/22R-PPH10NOO
A4VG250HD1D1/32LNZD10F001S
A4VS0250DR/22R-PPB13N00
軸向柱塞泵主泵
A4VSG250HS1/30L-PPB10N000N
A4VSG250HS/10R-PPB10NOO
A4VG71DWDMT2/23L-NZF02F041D泵
E-A4VSO250EO2/30R-VPB25N00-SO3
該泵軸端密封設(shè)計(jì)為兩種形式,一種是機(jī)械密封,另一種是填料密封,可根據(jù)具體使用情況和用戶(hù)要求確定。就核心組成部件齒輪而言主要由公法線(xiàn)齒輪泵和圓弧齒輪泵。公法線(xiàn)齒輪泵輸送含雜質(zhì)的介質(zhì)比圓弧齒輪泵要耐用,而圓弧齒輪泵結(jié)構(gòu)特殊,輸送干凈的介質(zhì)噪音低,壽命長(zhǎng),各有各的優(yōu)點(diǎn)。
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