With the extensive use of jaw crushers, more and more people are paying attention to the productivity of jaw crushers. Let’s analyze the productivity of jaw crushers and how to improve the productivity of jaw crushers.
Research on productivity issues of jaw crusher
The number of reciprocating swings of the jaw crusher's movable jaw increases, and the productivity will increase accordingly. However, when the rotational speed exceeds a certain value, the swing frequency of the movable jaw is too high, which makes it difficult for all the crushed materials to be discharged and easily blocks the crushing cavity. Therefore, there is a critical reconstruction value for the jaw crusher. Through the following assumptions, the theoretical critical speed value of the jaw crusher can be understood and calculated. The bite angle should have a certain range, and its size can be determined through force analysis. Assuming the mass of the spherical material clamped in the crushing cavity, since the gravity generated is much smaller than the crushing force of the material, it can be ignored. At the point where the jaw plate contacts the material, the effects of the jaw plate on the material are both perpendicular to the jaw plate. When the movable jaw swings, the effective bite angle remains unchanged, that is, the movable jaw leaves its original position in parallel. The crushed materials after the movable jaw leaves the fixed jaw are in the shape of a prism with a trapezoidal cross-section and fall freely due to gravity.
Methods to improve jaw crusher productivity
The important factors to ensure that the jaw crusher has high productivity, qualified products, low power consumption and stable long-term operation are correct operation and reasonable and timely maintenance. The maintenance work of the jaw crusher mainly focuses on lubrication, tightening, adjustment and cleaning.
During the working process of the crusher, each friction surface should be lubricated timely and reliably to ensure the long-term normal operation of the crusher. Therefore, special attention must be paid to the lubrication of each lubricating part. Otherwise it will cause an accident, a serious accident. For the lubrication of the movable jaw bearing, thrust plate and support pad of the compound pendulum crusher, dry oil lubrication is generally used. In winter, if dry oil is likely to solidify, 20% automotive lubricating oil can be added to it for lubrication. The lubrication of each contact surface must be comprehensive and even. However, the filling degree of lubricating oil in the rolling bearing seat should not exceed 50-70% of its volume. Depending on the operating conditions, the oil can be filled every 1-2 days and the lubricating oil can be changed every quarter. At the same time, inspect the bearings after thorough cleaning. Practice has proven that filling and replacing lubricating oil on schedule can extend the service life of bearings and other parts.
It is necessary to improve the productivity of the jaw crusher, but when improving it, remember to improve it while ensuring the service life of the jaw crusher. You cannot blindly damage the machine itself in order to increase productivity.