齒輪泵要平穩(wěn)工作,齒輪嚙合的重合度必須大于1,于是總有兩對齒輪同時嚙合,并有一部分油液被圍困在兩對輪齒所圍成的封閉容腔之間。這個封閉的容腔開始隨著齒輪的轉(zhuǎn)動逐漸減小,以后又逐漸加大。封閉腔容積的減小會使被困油液受擠壓而產(chǎn)生很高的壓力,并且從縫隙中擠出,導(dǎo)致油液發(fā)熱,并致使機(jī)件受到額外的負(fù)載;而封閉腔容積的增大又造成局部真空,使油液中溶解的氣體分離,產(chǎn)生氣穴現(xiàn)象。這些都將產(chǎn)生強(qiáng)烈的振動和噪聲,這就是齒輪泵的困油現(xiàn)象。
齒輪泵工作時,主動輪隨電動機(jī)一起旋轉(zhuǎn)并帶動從動輪跟著旋轉(zhuǎn)。當(dāng)吸入室一側(cè)的嚙合齒逐漸分開時,吸入室容積增大,壓力降低,便將吸人管中的液體吸入泵內(nèi);吸入液體分兩路在齒槽內(nèi)被齒輪推送到排出室。液體進(jìn)入排出室后,由于兩個齒輪的輪齒不斷嚙合,便液體受擠壓而從排出室進(jìn)入排出管中。主動齒輪和從動齒輪不停地旋轉(zhuǎn),泵就能連續(xù)不斷地吸入和排出液體。
德國力士樂柱塞泵型號:
A4VS0180DR/22R-PPB13N00
液壓馬達(dá)
A4VSG71EM3136/10R-PPB10K019N
E-A10VSO100DR/31R-PPA12N00
A4VSO180DR/3XR-PPB13N00
A4VG180EP2MT1/32RNZD02F0215
變量軸向柱塞泵A4VSO125DR/30R-PPB13N00
A4VSG500HD1AT/30R-PPH10K249N
A4VS0250E01/30R-PPBN00-S036
A4VG90EP2DT1/32R-NAF02F00
A4VSG250HD1T/30R-PPB10N000N
A4VSG250HD1U/30R-PPB10K269N
A4VS0250LR3G/30R-PZB13K35-S0
A10VSO140DR/31R-PPB12N00
A4VG56EZ2DM1/32R-NSC02F013SH
A4VS0500HSK/30L-PPH13N0010SET
A4VSG40HD1D/10R-PZB10N000N
液壓馬達(dá)
E-A4VSO125DR/30R-PPB13N00
A4VSG250EO1/22R-PPB10N000N
A4VSG250HD1T/30R-PPB10N000N
A4VG125EP2/32+A10V028DR/31
A4VSG71HD1D/10R-PPB10H029N
A4VSO180DR/-30R-PPB13N00
A4VS0125DR30R-PPB13N00
A4VG56EZ2DM1/32L-NSC02F013SH-K
A4VG250HD3D1/32R-NSD10F001D
A4VG125DA2D2/32R-NAF02F021DT
A4VSG250HD1D/30R-PPB10K349N
A4VSO71EO2/10R-PPB13NOO
E-A4VSO250EO2/30R-VPB25N00-SO3
A10VS071DR/31R-PPA12N00
柱塞泵
A4VS0180DR/22R-PPB13N00
A4VSG40EO1/10R-PPB10K019N
柱塞泵A4VSO-250DR/30R-PPB13N00
A4VG71EP/32R-NAF02F011S
A4VG71EP/32R-NAF02F011S
A4VG90EP2DT1/32L-NAFO2F001D
柱塞泵
A4VSO125DR/3DR-PPB13NOO
A4VG56EZ2DM1/32L-NSC02F013SH-K
A4VS07IDR/3XR軸向柱塞泵
E-A4VSO250EO2/30R-VPB25N00-SO3
A4VSG71EO1/10R-PPB10N00
A4VS071DR/30R-PPB13N00
A4VG71EPDT1/32R-NAF02F011S
A4VS0250LR3G/30R-PZB13N00-S0
A4VSG250EO1/30R-PPB10H009F
A4VSG71EM3120/10R-PPB10K019N
A4VG180EP2DT1/32R-NTD02F021S
A4VSG71EM3120/10R-PPB10K019N
E-A10VSO100DR/31R-PPA12N00
A4VS0125DR/22R-PPB13N00
A4VS0250DR/30RPPB13N00
A4VSO180DR/30R-PPB13N00
A4VG-125
A4VSG71HW/10R-PPB10H029F
A4VS040DR-PPB13N00
A10VSO45DFR/31R-PPA12K68
柱塞泵
A4VS0250E01/30R-PPBN00-S036
A4VSG40HS1/10R-VPB10N000N
A4VSO125DR/30R-PPB13N00
A4VS0125DR/10R-PPB13N00
A4VG56EZ1DMV32R-PSC02F023E-S
現(xiàn)在市場上的螺桿泵的種類較多,相對而言,進(jìn)口的螺桿泵設(shè)計合理,材質(zhì)精良,但價格較高,服務(wù)方面有的不到位,配件價格高,訂貨周期長,可能影響生產(chǎn)的正常運(yùn)行。 國內(nèi)生產(chǎn)的大都***進(jìn)口產(chǎn)品,產(chǎn)品質(zhì)量良莠不齊,在選用國內(nèi)生產(chǎn)的產(chǎn)品時,在考慮其性價比的時候,選用低轉(zhuǎn)速,長導(dǎo)程,傳動量部件材質(zhì)優(yōu)良,額定壽命長的產(chǎn)品。
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