The manufacturer directly sells PCs high-efficiency energy-saving two in one crusher energy-saving environmental protection high-efficiency sand making machine

 
Classification crushers can be divided into medical crushers and mining crushers
The medical lithotriptor is mainly used for stone crushing, which generally uses resonance and other methods to break stones, so as to avoid various risks caused by surgery

The working principles of different types of crushers are also completely different
Take the ring hammer crusher as an example:
Hammer crusher mainly relies on impact energy to complete the crushing of materials
When the hammer crusher works, the motor drives the rotor to rotate at a high speed, and the materials uniformly enter the crusher cavity
The high-speed rotating hammer impacts, cuts and tears the materials, causing the materials to be broken
At the same time, the gravity of the materials causes the materials to rush from the high-speed rotating hammer to the baffle and screen strip in the frame
A screen plate is set at the lower part of the rotor, and the particles smaller than the size of the screen hole in the crushed materials are discharged through the screen plate, The material larger than the size of the screen hole will remain on the screen plate and continue to be hit and ground by the hammer

Technical type 1
Crushers can be roughly divided into two categories according to the action mode of crushing force:
(1) Crusher (2) mill
Crushers generally handle large pieces of materials, and the product particle size is coarse, usually greater than 8mm
Its structural feature is that there is a certain gap between the broken parts and they do not contact each other
Crusher can be divided into coarse crusher, medium crusher and fine crusher
Generally speaking, the material processed by the mill is fine, and the product particle size is fine, up to 0
074 mm, even thinner
Its structural feature is that the crushing parts (or medium) are in contact with each other, and the medium used is steel ball, steel bar, gravel or ore block
However, some machines have both ore crushing and grinding functions, such as autogenous mills
∮5。 5× 1。 The upper limit of ore particle size treated by 8m autogenous mill can reach 350 ~ 400mm
2
It is divided into six categories according to the crushing mode and mechanical structural characteristics (action principle)
(1) Jaw crusher (huhukou)
The crushing action is to periodically press the movable jaw plate to the fixed jaw plate to crush the ore blocks sandwiched in it
(2) Cone crusher
The ore block is between the inner and outer cones, the outer cone is fixed, and the inner cone swings eccentrically to crush or break the ore block sandwiched in it
(3) Roll crusher
The ore block is mainly subject to continuous crushing in the gap between two opposite rotating round rollers, but it also has grinding and stripping effect
The toothed roller surface also has splitting effect
(4) Impact crusher
The ore block is crushed by the impact of the fast rotating moving parts
Belonging to this category can be divided into: hammer crusher; Cage crusher; Counterattack crusher
(5) Mill
The ore is crushed by the impact and grinding of grinding medium (steel ball, steel bar, gravel or ore block) in the rotating cylinder

A
Roller mill: the material is crushed by the rotating roller

B
Disc mill: uses the disc rotation of the vertical axis or horizontal axis as the crushing part

C
Centrifugal mill
Using high-speed rotating parts and medium production centrifugal force to complete the crushing action

D
Vibrating mill
Using the rotating shaft to produce high-frequency vibration, the medium and materials collide with each other to complete the crushing action

Various crushers have different specifications and different application ranges
Jaw crusher or rotary cone crusher is used for coarse crushing; Standard cone crusher is adopted for medium crushing; Short head cone crusher is used for fine crushing [1] 
Technical index mining crusher
Jaw crusher has the characteristics of large crushing ratio, uniform product particle size, simple structure, reliable operation, simple maintenance and economic operation cost
Pf-i series impact crusher can process materials with side length less than 100 ~ 500mm, and its compressive strength can reach 350 MPa at most
It has the advantages of large crushing ratio and cubic particles after crushing; Pf-ii series impact crusher is suitable for crushing medium hard materials, such as limestone in cement plant
It has the advantages of large production capacity and small discharge particle size
Crushing method of mining crusher
1
Crushing uses the extrusion force generated when the two crushing working faces approach to crush the materials
Jaw crusher, roller crusher and cone crusher are all crushing machines based on crushing method
2
Chopping is to use the splitting force of sharp teeth wedging into the material to break
The force is concentrated and suitable for the breaking of brittle materials
3
Breaking the material between the crushing working faces is like a two fulcrum (or multi fulcrum) beam bearing a concentrated load, so that the material itself breaks on the bending surface

Performance and application impact crusher developed very fast although it appeared late
It has been widely used in various ore medium and fine crushing operations by China's cement, building materials, coal, chemical industry, mineral processing and other industrial departments It is also used as coarse crushing equipment for ore
The reason why the impact crusher develops so rapidly is mainly because it has the following important characteristics

The particle size of the product is uniform Little over crushing
This kind of crushing
It uses kinetic energy to break the ore, and the kinetic energy of each ore is directly proportional to the quality of the ore
Therefore In the process of ore crushing, large ore is crushed to a large extent However, the ore with smaller particles will not be broken under certain conditions Therefore, the particle size of crushed products is uniform

Maintenance of the installation machine 1
The bearing of the bearing crusher bears all the loads of the machine, so good lubrication has a great impact on the bearing life, which directly affects the service life and operation rate of the machine
Therefore, it is required that the injected lubricating oil must be clean and well sealed
The main oil injection points of the machine:
(1) Rotating bearing (2) roll bearing (3) all gears (4) movable bearing
2
The newly installed tyre is easy to loosen and must be checked frequently [2] 
Commissioning 1
The equipment shall be installed on a horizontal concrete foundation and fixed with anchor bolts
2
During installation, pay attention to the verticality between the main body and the horizontal
3
Configure the power cord and control switch according to the power of the equipment
4
After installation, check whether the bolts at each part are loose and whether the main engine compartment door is fastened
General regulations 1
  The drivers of the transfer machine and crusher must be trained to “ Three understandings ” (understand structure, performance and principle), “ Four meetings ” (be able to use, maintain, maintain and handle faults)
Only after passing the training and examination and obtaining the certificate can they take the post for operation

2
Closely cooperate with the scraper conveyor driver of the working face and the belt conveyor driver of the transportation lane, unify the signal contact, and start and stop the operation in sequence
When large pieces of coal and gangue are accumulated and overflowed at the feeding port of the crusher, stop the operation of the face scraper conveyor
If large coal and gangue cannot enter the breaker or there are metal objects