Advantages and disadvantages of hammer crusher & ring ha
Date:2022-06-17 15:07:45
Author:admin
Views:
193
Hammer crusher and ring hammer crusher are common machines when we crush materials. The purpose is to crush materials, but what is the difference? In order for everyone to understand, please see the following detailed explanation of their principles and their respective advantages and disadvantages of hammer crusher and ring hammer crusher.
The hammer crusher is a plate hammer with an integrated hammer handle, while the ring hammer crusher is a ring-shaped hollow hammer, which is driven by the main shaft to rotate at a high speed to impact the material, thereby breaking the material.
Advantages of hammer crusher: generally 10-25 crushing ratio, up to 50 crushing ratio, high production capacity, uniform product, less excessive phenomenon.
Disadvantages of hammer crusher: hammer head and sieve plate wear quickly, rotor maintenance and balancing take a long time, not suitable for crushing hard materials, wear faster; when crushing sticky and wet materials, it is easy to block the screen gap of the grate, which is easy to cause stuffiness The moisture content of the material should not exceed 10%; when crushing hard materials, the hammer head and the lining plate wear a lot, and consume a lot of metal materials. When replacing the easy-to-wear parts, the maintenance time is longer. The sieve plate is easily blocked and the production capacity is reduced.
Advantages of the ring hammer crusher: it is suitable for crushing various medium-hard and weak abrasive materials, and the moisture content is less than 15% and the compressive strength does not exceed 100MPa; When the working surface of the hammer head is ground into an arc, the surface force changes, and the force F acting on the wear surface can be decomposed into two component forces, one is the normal force of the hammer straight to the hammer surface Fn=Fsina. One is the tangential direction parallel to the hammer face Ft=Fcons, the former produces impact on the hammer head, and the latter causes cutting and scouring on the hammer face, and the magnitude of the two depends on the value of the impact angle a. At the initial stage of the hammer head, the impact angle a=90° and the tangential force Ft is zero, which is mainly manifested as impact wear; When the hammer head is worn, the impact angle a becomes smaller, and the tangential force Ft becomes larger with the decrease of the impact angle a. At this time, the main manifestation is scouring wear, which makes the metal migrate from the hammer face.
Disadvantages of ring hammer crusher: the crushing ratio is not large, and the loss of the hammer head is large.
