Impact crusher : the knowledge of the impact crusher and the advantages of the comparison hammer
Most of the crushing equipment in China was introduced in the 1950s. At that time, the basic crusher was used, but the jaw crusher could not meet the production demand. The impact crusher began to enter the people's eye, and the impact crusher came out. After that, after half a century of development, improvement and optimization, it became the main leader of the crusher. Why is the counter crusher so popular for so long?
Mainly for the following reasons:
1. The crushed material has large particle size and broken hard rock. It can process materials below 100-500mm. The crushing ratio is large. The discharge size is ≤40mm, the crushing is uniform, and the compressive strength can reach 320MPa.
2. Medium-hard materials, discharge granularity ≤ 25mm, 3. Construction waste, material size ≤ 30mm. The working environment of the impact crusher is carried out under the condition that the discharge opening width is 50 mm, the angle of engagement is 19°, and the lower stroke of the movable jaw is 16 mm. The parameter of change is the number of revolutions of the eccentric axis. Under certain working conditions, productivity increases with the increase of the number of revolutions. The crushing ratio and the content of fine-grained products (0 to 5 mm) have increased. Before the maximum productivity is reached, the change in the crushing power consumption is small as the number of revolutions increases, but after the maximum productivity is reached, the power consumption of the crushing increases sharply. The biggest disadvantage of the impact crusher is that the hammer head and the lining plate and the plate hammer wear faster. Why is the impactor of the impact crusher easy to grind? The wear of the impactor such as the impact hammer and the counterattack in the impact crusher is the wear of the chiseled abrasive. The wear is groove wear with strong surface strain and mechanical strain. The groove is formed because the abrasive cuts the metal substrate at a certain speed under the action of external force, and is detached from the metal substrate after a period of slip, thereby being in the base body. Leave a groove on the road. The formation of the grooves depends on the magnitude of the local stress and the relative value of the metal surface to the hardness of the abrasive. In the case of the same stress, the greater the hardness of the abrasive, the easier it is to create a groove. Due to the high hardness of the sand shale, the grooves generated on the metal matrix tend to dominate the wear.
Common inspection and replacement of consumables for impact crushers: In the work of impact crushers, a comprehensive inspection of the motor and lubrication system of the impact crusher should be carried out regularly. The contents of the inspection include the fastening of the fixed part, the belt drive, the bearing seal, the counter lining, the wear of the lining, etc. The clearance of the rotor and the counter lining of the impact crusher: when the rotor of the impact crusher is During operation, the gap between the rotor and the counter lining cannot be adjusted. If you find that the consumables need to be replaced, you can use the following method to open the rear shelf first. When using, first remove the connecting bolts of the rear upper frame and the middle case, then use a wrench to screw the hexagonal head part of the flip device, and then the upper frame is slowly opened. At the same time, the rear frame can be hoisted by the hanging device above the rack. Repeat the above process, that is, close the upper shelf. The replacement step of the lining is to open the rear upper cover, remove the split pin, slotted nut and bolt for fixing the counter lining, and replace the worn back lining.
The advantage of the Shanzhuo Heavy Industry Impact Crusher is that it has a large crack ratio and a good grain shape. The wear of the wearing parts is smaller than that of the hammer rupture machine and the metal application rate is high. The replacement of spare parts is simple and the maintenance cost response is reduced. It can conveniently and sensitively regulate the discharge particle size, and the discharge particle size adjustment has wide limitations. It is used for both soft materials and materials with very high hardness. It can be used to dispose of materials with a large moisture content to avoid the infarction of the rupture machine.
The high-quality point of the hammer crusher: the hammer crusher has a relatively small crack ratio, and the product has a large amount of granular needle-like content, high powder content, low cracking efficiency and low yield. The task limitation of the hammer rupture machine is stipulated. Compared with the impact crusher, the hammer rupture machine integrates the rupture stone and the shaping, and compares the crushing and counterattack below the medium hardness.
According to the comparison between the data of the impact crusher and the hammer crusher, the counterattack is relative to the hammer break: 1. saves the investment cost by more than 40% 2. the product rate is 20-30% higher 3. The particle shape is good, Needle-shaped less than 20-30% 4. Can be used for a broken application, but can also be broken and can only be broken. The counter-crusher produced by our company is not only of good quality, but also at a reasonable price. The after-sales service is a must, and the whole process is tracked to ensure that you have no worries after buying.
Shanghai Shanzhuo Crusher Network focuses on the introduction of impact crusher, hammer crusher, jaw crusher, cone crusher, and other high quality and low cost crusher equipment.
Impact crusher Crusher price crusher equipment official website: http://
Impact crusher: http://?action-viewnews-itemid-72
Jaw Crusher: http://?action-viewnews-itemid-73
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