Gear pump yezi zikhumbuzo zezenzo

创建于05.17

Gear pump yezi zikhumbuzo zezenzo

Uma uma cycloidal gear pump ifuna ukuba ne-pressure ephezulu, idinga ukusebenzisa isakhiwo sokuhlanza sokugcina, futhi ingcindezi yayo yokusebenza ingafinyelela ku-16MPa.

2.1.4 ukusebenza izinga

Ihlo lempumelelo yegear pump ngu-uk pressure, displacement, speed, efficiency kanye nempilo.

(1) Imaximu ye pressure ye gear pump ye midziyo midiki nepakati ine yakanaka axial clearance uye radial clearance compensation measures inopfuura 25MPa, uye iyo ichangoburwa yakaburitswa internal gear pump inotora kusvika 40MPa. Iyo yakatarwa pressure ye gear pump huru inotangira pa 16 ~ 20MPa.

(2) Ukuhlola nokuhamba kokuhamba ukuhamba kwe-hydraulic gear pump kuyisici esiyinhloko sokucaciswa kwepampu, okuncike kakhulu kumapharamitha wejiyomethrikhi afana nenombolo yamazinyo Z, modulus, ububanzi bezinyo b, njll. ifomula yokubala engalungile yokuhamba kwepampu yegear enezakhiwo ezahlukene iboniswe etafuleni elingezansi. Umkhawulo wokuhamba kwemikhiqizo ye-hydraulic gear pump ububanzi obukhulu, ukusuka ku-0.05 kuya ku-800 ml / R, kodwa ukuhamba okujwayelekile kusemkhawulweni ka-2.5 kuya ku-250 ml / R.

Approximate calculation formula for displacement of gear pump with various structures

Pump类型	排量（ml/r）近似计算式	说明
渐开线标准齿形（压力角a=20°，齿顶高系数f=1）的外齿轮泵	V=2πKzm2B×10-3(此式在假设齿间工作容积和轮齿有效体积相等条件下导出)	z-齿数，z=z1=z3；m-模数，mm；B-齿宽，mm；K-考虑到轮齿实际集合形状差异的修正系数。z=620时，取K=1.1390.004z
渐开线标准齿形（压力角a=20°，齿顶高系数f=1）的内齿轮泵	V=πBm2(4z1-z1/z2-0.75) ×10-3	z1、z2-主动齿轮及齿圈的齿数；B-齿宽，mm；m-模数，mm
一齿差摆线针轮齿环泵	V=2πeBDe(z2-0.125) ×10-3	e-啮合副的偏心距，mm；B-齿宽，mm；De-针齿齿顶圆直径，mm；z2-外转子齿数

(3) I-velocidade ye-micro gear pump iphezulu, ifika ku-20000 R / min. I-velocidade ebekiwe ye-gear pump evame ukusetshenziswa kwezobunjiniyela ingu-2000 ~ 2500 R / min. Umkhawulo ophansi we-gear pump uvame ukuba ngu-300 ~ 500r / min. Kungabonakala kusukela efomula (1-10) ukuthi uma i-pump speed iphansi kakhulu, ngenxa yokuthi umjikelezo ophumayo uncane kakhulu, isabelo sok leaking flow sikhula, okwenza i-volumetric efficiency ye-hydraulic pump yehlise kakhulu, kube nzima ukuhlela izimo ezinhle zokuhlola nokupholisa, kuholele ekushiseni okusheshayo nokulimala. Ngakho-ke, i-minimum speed ye-pump ivame ukusungulwa ngumkhiqizi.

(4) Uthuthukiso imijikelezo ejwayelekile yokusebenza yeziqandisi ezinezakhiwo ezihlukahlukene iboniswa kuFig. U. Kungabonakala ukuthi ukusebenza kweziqandisi ezinezinqubo zokubuyisela izikhala kuhle kakhulu kunezinguquko ezibekwe, futhi ukusebenza kweziqandisi zangaphakathi kuhle kakhulu kunezinguquko zangaphandle.

(5) Iphakheji yokusebenza ye-low pressure gear pump ingama-3000 ~ 5000h, iphakheji yokusebenza ye-high pressure external gear pump ingama-ama-akhawunti ambalwa ngaphansi kwengcindezi eyamukelekayo, kanti iphakheji yokusebenza ye-high pressure internal gear pump ingama-2000 ~ 3000h.

(6) Iparamitha eziyisisekelo eziyinhloko i-paramitha eziyisisekelo ze-gear pump ziyi-tooth width b, gear modulus m kanye no-tooth number 2.

When the tooth width B is larger, the total efficiency of the gear pump is higher, but when the pump pressure is higher, the load on the gear shaft and bearing is too large. The module m of gear directly affects the structural parameters of pump, such as pressure, displacement, pulsation, noise and tooth width B. Increasing the modulus and reducing the number of teeth are helpful to reduce the volume of the pump, but too few teeth will increase the flow and pressure pulsation of the pump.

The number of teeth of gear is generally z = 6 ~ 30, low-pressure gear pump generally requires small flow pulsation, so it is mostly z = 13 ~ 20; high-pressure gear pump requires large root strength, so the modulus is large, and the number of teeth is small, generally z = 6 ~ 14. In order to avoid undercutting and weaken the root strength, it is necessary to modify the tooth profile.

Tooth width B na modulus m ya gear ni b = km, K ni coefficient ya tooth width, value range ya low pressure gear pump K ni 6 ~ 10, na value range ya high pressure gear pump K ni 3 ~ 6. Kile kiwango cha shinikizo cha kazi kinavyokuwa juu, ndivyo K inavyopaswa kuwa ndogo.

Die Modul m des Getriebes hängt hauptsächlich von der Durchflussrate der Pumpe ab. Der Modulbereich der Mittel- und Niederdruckgetriebepumpe mit der Durchflussrate q = 4 ~ 125L / min ist m = 1,5 ~ 5mm. Je größer die Durchflussrate ist, desto größer ist das Modul.

Shiya imininingwane yakho futhi
sizokuthinta.

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