High-pressure grease injector

Abstract

The invention discloses a high-pressure grease injector. The high-pressure grease injector comprises a grease tank, a pedal support, a grease injecting pump, a high-press hose and a grease injecting gun. A grease injection check valve is arranged between the grease injecting pump and the high-pressure hose and composed of a pump rod, a pump body, a conical helical compression spring and a case, wherein the spring, the pump rod and the pump body are sequentially arranged inside the case from top to bottom, and the case is composed of an outer case and an inner case which are threadedly connected; the center of the pump body is provided with a through hole, the pump rod is provided with a convex ring, and the diameter of the convex ring is larger than that of the central through hole; one end of the pump rod extends into the pump body, the other end of the pump rod is provided with conical helical compression spring, and the pump rod extending into the pump body is provided with a longitudinal groove for a grease supply way to pass through. The high-pressure grease injector is good in one-way check effects, time-saving, labor-saving, capable of achieving continuous grease injection and long in service life.

Description

technical field [0001] The invention relates to a lubricating grease high-pressure oiler, which belongs to the technical field of tools. Background technique [0002] The existing foot-operated high-pressure oiler comprises a base, a barrel body, an oiler cover, a foot-operated connecting plate, an oil injection pump, a high-pressure hose, an oil injection gun, and an oil injection non-return mechanism. The oil injection check mechanism is composed of a steel ball, a cylindrical helical compression spring, and a threaded joint. The steel ball surface is mainly in contact with the inner cone surface of the joint, and the steel ball is produced by spring force to coincide with the inner cone surface of the joint. The oil injection non-return mechanism with this structure will not have a good one-way non-return effect as long as the contact between the steel ball and the inner tapered surface of the joint is not well matched. In addition, the cylindrical helical compression sp...

AI Technical Summary

Problems solved by technology

With this structure of the oil injection check mechanism, as long as the contact between the steel ball and the inner tapered surface of the joint is not good, it will not have a good one-way check effect.

In addition, the cylindrical helical compression spring structure is adopted, and the cylindrical helical compression spring is easily deformed after long-term work and oil filling, so the effect of one-way check cannot be achieved.

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