Cooling pump of machine tool

Abstract

The invention discloses a cooling pump of a machine tool. An impeller is in a full-open vortex long-blade structure; the blade length is 1 / 6-1 / 4 of the outer diameter D2 of the impeller; an axial clearance d1 between the impeller and a pump body is 0.1-0.3mm; annular bulges are arranged on a pump cover and used for adjusting an axial clearance d2 between the pump cover and the impeller to be 0.1-0.3mm; a water inlet is formed in the pump body, and takes a cut-water position A as a starting point circumferentially; and a radial position of the water inlet corresponds to a blade area of the impeller. According to the cooling pump of the machine tool, the novel vortex impeller is strictly matched with the pump cover and the end face of the pump body, and the matched clearances between the impeller and the pump cover and between the impeller and the pump cover are ensured, so that a small-flow and high-lift cooling liquid conveying requirement is met; the efficiency is improved; a distance from the water inlet to the bottom of a cooling liquid box can be shortened with the increasing of a lift; a use ratio of cooling liquid is increased; the characteristic requirements on the efficiency, small flow and high lift are met; and the cooling pump can be widely applied to cooling of the machine tool.

Description

technical field [0001] The invention belongs to the field of cooling pumps, and in particular relates to a machine tool cooling pump technology with high-efficiency and high-lift delivery. Background technique [0002] Machine tool cooling pumps are mostly installed above the predetermined coolant tank, mainly composed of pump cover 1, pump body 3, and pump shaft 4. The impeller 2 is installed in the pump cover 1, coaxial with the pump cover and pump body, and the motor drives the impeller to rotate. Deliver coolant to cool machined parts. Its pump head part, such as figure 1 As shown, it is mainly composed of pump cover 1, impeller 2, pump body 3 and pump shaft 4, which are immersed in the coolant. The maximum radial size is limited by the size of the round hole above the box to ensure that iron filings etc. Impurities do not enter the box. [0003] As the spindle speed of the machine tool increases significantly, the head of the cooling pump of the machine tool is requi...

AI Technical Summary

Problems solved by technology

[0006] In the machine tool cooling pumps in the prior art, the impeller is mainly a semi-open centrifugal impeller, that is, the inlet side of the impeller is open, the pump body is usually designed with a circular or spiral flow cross section, and there is a large axial gap between the impeller blades and the pump body. The cavity, which causes the high-pressure fluid to idle in the cavity when the pump is running, has a large vortex loss, so the lift and efficiency of this type of pump are low

Images