推動(dòng)高粘流體進(jìn)入吸入口一側(cè)的兩齒空間是非常重要的,如果這一空間沒(méi)有填充滿,則泵就不能排出準(zhǔn)確的流量,所以PV值(壓力×流速)也是另外一個(gè)限制因素,而且是一個(gè)工藝變量。由于這些限制,齒輪泵制造商將提供一系列產(chǎn)品,即不同的規(guī)格及排量(每轉(zhuǎn)一周所排出的量)。這些泵將與具體的應(yīng)用工藝相配合,以使系統(tǒng)能力及價(jià)格達(dá)到***。
動(dòng)力機(jī)維修不錄。電動(dòng)機(jī)因繞組燒毀,而失磁,維修中繞組匝數(shù)、線徑、接線方法改變,或維修中故障未徹底排除因素也會(huì)使水泵轉(zhuǎn)速改變。 吸程太大 有些水源較深,有些水源外圍勢(shì)較平坦處,而忽略了水泵容許吸程,產(chǎn)生了吸水少或根本吸不上水結(jié)果。要知道水泵吸水口處能建立真空度是有限度,***真空時(shí)吸程約為10米水柱高,而水泵不可能建立***真空。真空度過(guò)大,易使泵內(nèi)水氣化,對(duì)水泵工作不利。 REXROTH葉片泵因其有可變量輸送、自吸能力強(qiáng)、可逆轉(zhuǎn)、能輸送含固體顆粒的液體等特點(diǎn),在污水處理廠中,廣泛地被使用在輸送水、濕污泥和絮凝劑藥液方面。螺桿泵選用應(yīng)遵循經(jīng)濟(jì)、合理、可靠的原則。如果在設(shè)計(jì)選型方面考慮不周,會(huì)給以后的使用、管理、維修帶來(lái)麻煩,所以選用一臺(tái)按生產(chǎn)實(shí)際需要,合理可靠的螺桿泵既能保證生產(chǎn)順利進(jìn)行,又可降低修理成本。
德國(guó)力士樂(lè)柱塞泵型號(hào):
AA10VSO140DRG/31R-PKD62N00
A4VS0125DR/3XR
AA10VSO140DRG/31R-PKD62N00
A4VG125HD1P1/32R-N2D10F69
A4VSG71EO2K/10R-PPB10H049N
A4VG56EZ2DM1/32R-NSC02F013SH
A4VSG71EO1K/10R-PPB10H049N
A4VSG250EO1/22R-PPB10N000N
A4VSG250HD1T/30R-PPB10N000N
A4VSG71DS1E/10W-PZB10T001N
A4VSG250HS1/30L-PPB10N000N
A4VG180EP2DT1/32R-NTD02F021S
A4VSG40HS1/10R-PPB10N00
A4VG125HDDT1/32L-PZF02F001D
A4VSG250HD1D/30R-PPB10H029N
A4VSG71EO1/10R-PPB10N00
A4VSG250HS/10R-PPB10N00
A4VG125HD1D2/32R-NSF02F02F021P
A2VK12MAOR4GOPE1-S029447172
變量軸向柱塞泵A4VSO125DR/30R-PPB13N00
A4VG125HDMT1/32R-NSFO21S-S
A4VG125HD1DT1/32R-NSF02F001S
A4VSG71HW/10R-PPB10H029F
A4VSG40EM2009/10R-PPB10K310N
A4VS071DR/31R-PPB
A4VSG40HS1/10R-VPB10N000N
E-A10VSO140DR/31R-PPB12NOO
A4VS040DR-PPB13N00
A4VSG250HDA/30R-PPB10NOO9N
A4VSG250HD1T/30R-PPB10N000N
A4VS0500HSK/30L-PPH13N0010SET
A4VS0250DR/22R-PPB13N00
A4VS0125DFR/30R-PPB13N00
A4VG250HD1D1/32R-NSD10F001D
A4VG56EZ1DMV32R-PSC02F023E-S
A4VSG250HD1D/30R-PPB10K349N
A4VSG250HSE/30R-PPB10N000N
油泵A4VSO180DFR/30R-PPB13N00
A4VSG71HD1D/10R-PPB10H029N
A4VS0250DR/22R-PPB13N00
AA10VSO140DRG/31R-PKD62N00
A4VSG250HD1A/30R-PPB10K269N
A4VSO71EO2/10R-PPB13NOO
A4VG40EP4DMT1/32L-NSC02F015PH
A4VS040DR/10X-PPB13N00
A4VS0500HSK/30R-PPH13N0010SETE-
A4VSG250HD1P/30R-PPB10G300N
A4VSG71HD1A/10R-PZB10K519N
A4VSO40EO/31L-P2BBN00
A4VSG250EM3066/30R-PPB10N009N
A4VSO125DR/3DR-PPB13NOO
A4VSG250EM1007/30R-PPB10H029F
A4VSG71EM3120/10R-PPB10K019N
A4VG56EZ2DM1/32L-NSC02F013SH-K
AE-A10VSO140D/31R-PPB12N00
A4VSG40HS1/10R-VPB10N000N
A4VS07IDR/3XR軸向柱塞泵
A4VSG71EO1K/10R-PPB10H049N
A4VSO40DR10RPPB13100N
A4VG125HD1P1/32R-N2D10F69
A4VSG250EM3066/30R-PPB10N009N
A4VSG71EO2K/10R-PPB10H049N
AA10VS045DFR/31R-PKC62N00
A4VG125DA2D2/32R-NAF02F021DT
A10VS071DR/31R-PPA12N00
A4VG250HD1D1/32LNZD10F001S
不論齒輪油泵的轉(zhuǎn)速、工作壓力或支路需要的流量大小,定值一次流量控制閥總可保證設(shè)備工作所需的流量。在圖7所示的這種回路中,泵的輸出流量必須大于或等于一次油路所需流量,二次流量可作它用或回油箱。定值一次流量閥(比例閥)將一次控制與液壓泵結(jié)合起來(lái),省去管路并消除外泄漏,故降低了成本。此種齒輪泵回路的典型應(yīng)用是汽車(chē)起重機(jī)上??梢?jiàn)到的轉(zhuǎn)向機(jī)構(gòu),它省去了一個(gè)泵。
s19hms220
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