Measuring gear pump suitable for conveying of coating

Abstract

The application provides a measuring gear pump suitable for conveying of coating. The measuring gear pump comprises a pump body, a top plate and a bottom plate, wherein the top plate and the bottom plate are arranged on two sides of the pump body; the pump body comprises a middle plate, a driving gear and a driven gear; the driving gear and the driven gear are located in the middle plate, and aremeshed; a driving shaft is arranged at the center of the driving gear, and penetrates through the top plate from the inner part of the pump body to extend to the outside of the pump body; a driven shaft is arranged at the center of the driven gear; and a diamond-like carbon coating is coated on the surfaces of the spare parts of the measuring gear pump, which are in contact with each other and arein relative motion. The measuring gear pump disclosed by the application has the beneficial effects that the diamond-like carbon coating is coated on the surfaces of the spare parts of the measuringgear pump, which are in contact with each other and are in relative motion, so that the surface hardness of the spare parts is improved, the friction coefficient of the surfaces of the spare parts isreduced, wear between the spare parts is reduced, the corrosion resistance of the spare parts is improved, and the service life of the measuring gear pump is prolonged.

Description

technical field [0001] The present application relates to the technical field of gear pumps, in particular to a metering gear pump suitable for paint delivery. Background technique [0002] The gear pump is a rotary pump that relies on the change and movement of the working volume formed between the pump cylinder and the meshing gear to deliver or pressurize the liquid. Metering gear pumps for paint delivery provide steady and consistent paint flow regulation for automated spray systems. In order to ensure the stability of the automatic spraying system, the gear pump must be required to work smoothly, with good flow accuracy, high transmission efficiency and long service life. However, in the traditional gear pump, there is sliding friction between the rotating parts and the stationary parts, and there is no lubrication between the gears. The parts of the gear pump are easy to wear and cannot be repaired after wear, resulting in a short service life of the gear pump. There...

AI Technical Summary

Problems solved by technology

However, in the traditional gear pump, there is sliding friction between the rotating parts and the stationary parts, and there is no lubrication between the gears. The parts of the gear pump are easy to wear and cannot be repaired after wear, resulting in a short service life of the gear pump.

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