Jaw crusher

Abstract

The invention discloses a jaw crusher. The jaw crusher comprises a fixed jaw with a fixed jaw crushing face and a movable jaw with a movable jaw crushing face. A crushing cavity is formed between the movable jaw crushing face and the fixed jaw crushing face. A discharging port is formed in the bottom of the crushing cavity. The movable jaw gets close to or gets away from the fixed jaw under the joint action of a spindle and a toggle plate of the jaw crusher. The position, close to the position of the discharging port, of the movable jaw crushing face is provided with a first hook face crushing face, and the first hook face crushing face deviates and extends in the direction away from the fixed jaw when extending towards the discharging port. When materials in the crushing cavity need to be discharged, the upward force applied to the materials through the first hook face crushing face can be reduced, or the upward force is not applied to the materials any more, and therefore material rising is reduced or the materials do not rise again any more in the material falling process, centralized abrasion on the movable jaw crushing face from the materials is reduced or centralized abrasion on the movable jaw crushing face from the materials cannot be caused, the discharging efficiency is improved, and the movable jaw crushing face is not prone to damage.

Description

technical field [0001] The invention relates to the technical field of crushers, in particular to a jaw crusher. Background technique [0002] Jaw crushers are widely used in mining and smelting, building materials, highways, railways, water conservancy and chemical industries to crush various ores and bulk materials. The working parts include static jaws and movable jaws. The static jaws are vertical or the upper end is slightly outward. The ground is fixed on the front wall of the machine body, and the position of the movable jaw is skewed, forming a crushing cavity with a large upper part and a smaller lower part with the static jaw. Driven by the eccentric shaft (main shaft), the movable jaw reciprocates periodically relative to the static jaw, sometimes separating and sometimes approaching, simulating the movement of the two jaws of animals to complete the material crushing operation. The movable jaw is installed on the eccentric shaft, driven by the eccentric shaft, w...

AI Technical Summary

Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the jaw crusher in the prior art has material recovery during discharge, resulting in low discharge efficiency, and the crushing surface of the movable jaw is easily damaged by concentrated wear at the overlapping line. defects, so as to provide a jaw crusher that is less prone to material recovery during discharge, has high discharge efficiency, and the crushing surface of the movable jaw is not easily worn and damaged

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