Gear pump yezi zikhala zokuqhuba

Kwadalwa ngo 05.17

Gear pump yezi zikhumbuzo zezenzo

If the cycloidal gear pump wants to be high pressure, it needs to use the end clearance compensation structure, and its working pressure can reach 16MPa.

2.1.4 绩效参数

Ihlo lempilo elikhulu ye-gear pump inguk pressure, displacement, speed, efficiency kanye nempilo.

(1) Imaximu preshure ya madiki na kati ya displacement gear pump ine mazuri axial clearance na radial clearance compensation measures ni zaidi ya 25MPa, na pump ya ndani mpya iliyozinduliwa hata inafikia 40MPa. Ipresha iliyoainishwa ya gear pump kubwa ya displacement ni 16 ~ 20MPa.

(2) Ukuhlola nokuhamba kokuhamba ukuhamba kwe-hydraulic gear pump kuyisici esiyinhloko sokucaciswa kwepampu, okuncike kakhulu kumapharamitha e-geometric afana nenombolo yamazinyo Z, modulus, ububanzi bamazinyo b, njll. ifomula yokubala engama-approximate yokuhamba kwe-gear pump 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 we-2.5 kuya ku-250 ml / R.

Gear pump with various structures displacement calculation formula ye approximate.

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，毫米；B-齿宽，毫米；De-针齿齿顶圆直径，毫米；z2-外转子齿数

(3) Iji ọsọ nke micro gear pump dị elu, ruo 20000 R / min. ọsọ nke gear pump a na-ejikarị na injinia bụ 2000 ~ 2500 R / min. Oke ọsọ ala nke gear pump bụkarị 300 ~ 500r / min. A pụrụ ịhụ site na usoro (1-10) na mgbe ọsọ pump dị oke ala, n'ihi na mmepụta mmiri dị oke nta, akụkụ nke mmiri na-efunahụ na-abawanye, nke na-eme ka arụmọrụ volumetric nke hydraulic pump daa na ọkwa dị oke ala, ọ na-esiri ike ịmepụta ezigbo lubrication na ọnọdụ oyi, na-eduga na ọkụ ngwa ngwa na mmebi. Yabụ, a na-ejikarị onye nrụpụta kọwaa ọsọ kacha nta nke pump.

(4) Uthuthukiso izici ezijwayelekile zokusebenza zamapompo ezinsimbi ezinezakhiwo ezihlukahlukene zikhonjiswa kuFig. U. Kungabonakala ukuthi ukusebenza kwepompo yezinsimbi enezinyathelo zokubuyisela izikhala kukhulu kakhulu kunezinga eliqinile lokukhala, futhi ukusebenza kwepompo yegear yangaphakathi kukhulu kunepompo yegear yangaphandle.

(5) Isebenza isikhathi se-low pressure gear pump singu-3000 ~ 5000h, isikhathi sokusebenza se-high pressure external gear pump sikhulu kuphela ezinkulungwaneni ezimbalwa zama hora ngaphansi kwengcindezi eyamukelekayo, kanti isikhathi sokusebenza se-high pressure internal gear pump singu-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. K inapaswa kuwa ndogo kadri shinikizo la kazi linavyoongezeka.

The module m of the gear mainly depends on the flow rate of the pump. The module range of the medium and low pressure gear pump with the flow rate q = 4 ~ 125L / min is m = 1.5 ~ 5mm. The larger the flow rate is, the larger the module is.

Shiya imininingwane yakho futhi
sizokuthinta.

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