Feeding mode of crusher

1. Calculation method
1. Calculate I = Dmax / Dmax by the ratio of the maximum particle size of the material before crushing and the maximum particle size of the proct after crushing, where Dmax is the maximum particle size of the material before crushing; dmax― http://www.ysxuankuang.com/cpzx.html - the maximum particle size of the material after crushing
2. The ratio of the effective width of the feeding port and the width of the discharging port of the crusher
I = 0.85b/b
where
b --- the width of the feeding port of the crusher; B --- Crusher & lt; Width of discharge port
0.85 -
ensure the effective width of the crusher gripping the material. The maximum width of discharge port is selected for coarse crusher; Take the minimum width of discharge port for middle crusher
3. Calculate with average particle size
I = DCP / DCP
where
DCP - average diameter of material before crushing; DCP - average diameter of crushed material. The crushing ratio obtained by this method can truly reflect the crushing degree of sand and stone equipment.

2. Slag crusher
what kind of slag to crush

3.

The working principle of different types of crushers is different. The following are the working principles of several crushers:

1. The working principle of heavy hammer crusher: the motor drives the rotor to rotate at high speed in the crushing chamber, and the materials are fed into the crusher from the upper feeding port, and are crushed by the impact, impact, shear and grinding of the high-speed hammer

in the lower part of the rotor, there is a sieve plate, and the particles smaller than the size of the sieve hole are discharged through the sieve plate, while the coarse particles larger than the size of the sieve hole are retained on the sieve plate and continue to be hit and ground by the hammer, and finally discharged out of the crusher through the sieve plate

2. Working principle of impact crusher: when the machine is working, driven by the motor, the rotor rotates at high speed, and when the material enters the action area of the plate hammer, it collides with the plate hammer on the rotor to break

is thrown to the impact device and broken again, and then bounced back from the impact liner to the plate hammer action area and broken again, this process is repeated

from large to small, the material enters the first, second and third impact chambers for repeated crushing until the material is crushed to the required particle size and discharged from the discharge port. Adjusting the clearance between the impact frame and the rotor can change the material size and shape

extended data:

heavy hammer crusher predicted failure causes and elimination methods

increased vibration when replacing or assembling the hammer, the rotor is not well balanced, the hammer is removed, and the hammer quality is selected according to the requirements, Make the total mass of hammer on each row of hammer shaft and its relative hammer mass meet the requirements

rece the proction capacity

1. The gap of screen bar is blocked

2. Uneven feeding 1. Remove the plug in the gap of screen bar after parking

2. Adjust the feeding mechanism

to proce knocking sound inside the machine

1. The materials that cannot be broken enter the inside of the machine

2. The fastener of lining plate is loose The hammer or other parts are broken 1. Clean the crushing chamber after parking

2. Check the fastening condition of lining plate and the common faults and repair methods of hammer and screen bar

1. If the vibration of impact crusher is abnormal:

1. It indicates that the material is too large, you can check the feeding size

2. Uneven wear indicates that the impact hammer needs to be replaced

The rotor is unbalanced and needs to be adjusted

4. The foundation should be checked and reinforced e to improper foundation treatment

Second, if the impact crusher bearing is found to be hot:

1. The bearing is short of oil and needs to be refueled in time. Of course, too much oil will also make the bearing hot. The oil level must be checked when refuelling

If the bearing is damaged, the bearing should be replaced in time

If the upper cover is too tight, the bolts should be adjusted properly and the tightness should be moderate

(3) if it is found that the discharge particles of impact crusher are too large:

1. It indicates that the hammer head is worn and needs to be adjusted or replaced

The clearance between hammer head and impact plate is too large, generally adjusted to 15-20 mm

3, too large feed particle size will also affect the discharge particle size

4. If the impact crusher belt turns over:

1. The belt is worn and needs to be replaced

2. Because of the assembly problem of the belt conveyor, the pulley should be adjusted on the same plane

5. Model parameters of impact crusher

repair method

1. The front impact plate suspender and the rear impact plate suspender of impact crusher are combined to improve the elastic vibration of impact plate, so that the materials bonded on the impact plate can be sent to the crushing shell in time, With the crushed material, it enters into the lower bin

2. Recovery and repair of impact plate of high manganese steel impact hammer. For the worn hammer, 506 electrode, 2 high carbon electrode and 5 high tungsten electrode were used for surfacing test. The wear resistance and impact resistance of the hammer are the best after surfacing with No.5 high tungsten electrode

The wear resistance of the impact hammer overlaid with 506 electrode and No.2 high carbon electrode is two times higher than that of the original high manganese steel. But the cost of these two kinds of surfacing is high, which is not economical

When the impact plate is worn 3-5mm, the 5 high tungsten electrode is used for surfacing for 2-3 times

When the impact angle of impact crusher is increased from 1500 to 3000, the impact strength can be increased to ensure the particle size after crushing

The use methods of impact hammer include grouping according to weight tolerance, alternate row replacement, cross dislocation replacement and symmetrical replacement

The gap between the rotor and the front part of the shell of the impact crusher is increased from 10 mm to 85 mm, which can prevent the front part of the body from blocking

4. According to the way of crushing force, crushers can be roughly divided into two categories: (1) crushers: crushers generally deal with large pieces of materials, and the proct size is coarse, usually greater than 8 mm. 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
(2) grinding machine: Generally speaking, the material processed by the grinding machine is fine, and the proct size is fine, up to 0.074 mm, even finer. Its structural feature is that the crushing parts (or medium) contact each other, and the medium used is steel ball, steel bar, gravel or ore block. But some machines have the function of crushing and grinding at the same time, such as autogenous mill. According to the crushing mode and mechanical structure characteristics (working principle), the crushers can be divided into six categories:
(1) jaw crusher (tiger mouth): the crushing action is to press the movable jaw plate to the fixed jaw plate periodically to crush the ore block 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< (3) impact crusher: it uses the high speed impact of the plate hammer and the rebound effect of the impact plate to make the material receive repeated impact and crush. The plate hammer is fixed on the high-speed rotating rotor, and several impact plates are arranged at different angles along the crushing chamber
(4) roller crusher: in the gap between two opposite rotating round rollers, the ore block is mainly crushed continuously, but it also has the function of grinding and stripping, and the toothed roller surface also has the function of splitting
(5) impact crusher: the ore block is broken by the impact of fast rotating moving parts. Belong to this category can be divided into: hammer crusher; Cage crusher; Impact crusher
(6) grinding machine: the ore is crushed by the impact and grinding of grinding medium (steel ball, steel bar, gravel or ore block) in the rotating cylinder
(7) other types of crushing mills: A. roller mills: grind materials by rotating rollers. B. Disc mill: the disc rotation of vertical axis or horizontal axis is used as crushing part. C. Centrifugal mill. High speed rotating parts and medium are used to proce centrifugal force to complete crushing. D. Vibration mill. High frequency vibration is proced by the rotating shaft, which makes the medium and material collide with each other to complete the crushing effect
in order to check and understand whether the technical operation of each proction link meets the process requirements; In order to provide the managers and technicians of the concentrator with the weak links in proction, find and solve the problems in time, and promote the normal proction, the technical detection plays an indispensable and decisive role. It is an important means to do well in proction technology management, metal balance and management level. Therefore, each concentrator must carry out a series of proction technology testing work, and set up corresponding organizations according to the specific situation, such as quality management materials, technical inspection department, technical supervision station, testing group, etc From: Henan Zhenping Xinlong Machinery Manufacturing Co., Ltd.)

5. According to the way of crushing force, crushers can be roughly divided into two categories: (1) crushers: crushers generally deal with large pieces of materials, and the proct size is coarse, usually greater than 8 mm. 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
(2) grinding machine: Generally speaking, the material processed by the grinding machine is fine, and the proct size is fine, up to 0.074 mm, even finer. Its structural feature is that the crushing parts (or medium) contact each other, and the medium used is steel ball, steel bar, gravel or ore block. But some machines have the function of crushing and grinding at the same time, such as autogenous mill. According to the crushing mode and mechanical structure characteristics (working principle), the crushers can be divided into six categories:
(1) jaw crusher (tiger mouth): the crushing action is to press the movable jaw plate to the fixed jaw plate periodically to crush the ore block 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< (3) impact crusher: it uses the high speed impact of the plate hammer and the rebound effect of the impact plate to make the material receive repeated impact and crush. The plate hammer is fixed on the high-speed rotating rotor, and several impact plates are arranged at different angles along the crushing chamber
(4) roller crusher: in the gap between two opposite rotating round rollers, the ore block is mainly crushed continuously, but it also has the function of grinding and stripping, and the toothed roller surface also has the function of splitting
(5) impact crusher: the ore block is broken by the impact of fast rotating moving parts. Belong to this category can be divided into: hammer crusher; Cage crusher; Impact crusher
(6) grinding machine: the ore is crushed by the impact and grinding of grinding medium (steel ball, steel bar, gravel or ore block) in the rotating cylinder
(7) other types of crushing mills: A. roller mills: grind materials by rotating rollers. B. Disc mill: the disc rotation of vertical axis or horizontal axis is used as crushing part. C. Centrifugal mill. High speed rotating parts and medium are used to proce centrifugal force to complete crushing. D. Vibration mill. High frequency vibration is proced by the rotating shaft, which makes the medium and material collide with each other to complete the crushing effect
in order to check and understand whether the technical operation of each proction link meets the process requirements; In order to provide the managers and technicians of the concentrator with the weak links in proction, find and solve the problems in time, and promote the normal proction, the technical detection plays an indispensable and decisive role. It is an important means to do well in proction technology management, metal balance and management level. Therefore, each concentrator must carry out a series of proction technology testing work, and set up corresponding organizations according to the specific situation, such as quality management materials, technical inspection department, technical supervision station, testing group, etc From: Henan Zhenping Xinlong Machinery Manufacturing Co., Ltd.)
typing is not easy. If you are satisfied, please accept it.

6. Today's society is a rapidly developing society. Of course, development is inseparable from transformation, and transformation is inseparable from transformation tools. Large construction machinery and equipment can be seen everywhere in both processing and construction, and gravel machine can be said to be the representative of these large engineering equipment. The crusher is suitable for metallurgy, mining, construction, road construction, water conservancy and chemical instry. There are many kinds of lithotripters, which can be divided into medical lithotripters and mining lithotripters. Next, Yuzhou machinery focuses on the introction of mining gravel machine.

7. Shanghai Yiding helps you answer:

the crushing methods of crushers are divided into mechanical crushing and non mechanical crushing. Mechanical crushing can be divided into extrusion crushing, impact crushing, grinding crushing, splitting crushing and bending crushing. Non mechanical crushers are: hydraulic crusher and explosion crusher. No matter what kind of crushing method is adopted, when the material is under the action of external force, it always proces stress concentration along its most vulnerable surface and cracks. After crushing, the original vulnerable surface decreases or disappears on the newly generated fragments, and at the same time, a smaller new vulnerable surface is formed. With the decrease of particle size, the damage is relatively reced, and the material becomes more solid. Therefore, crushing smaller materials requires larger energy consumption, that is, the energy consumption of grinding 1t materials is greater than crushing 1t materials. The relationship between particle size change and energy consumption is calculated by using the crusher and grinding Bond work index of a certain material to determine the reasonable crushing particle size of the material, so as to greatly rece the comprehensive energy consumption of crushing and grinding
crushing operation and screening operation are carried out jointly. In the feed to be broken, there are usually some materials smaller than the required particle size in the crushing stage. Before the crusher is given a screening, screening them in advance. After crushing, the proct often contains some large particles of material, which is also commonly screened out in crushing. It is called inspection screening. Therefore, crushers are often used in various types of sieves to form an open circuit or closed circuit system. The particle size of closed circuit crushing system is controlled by the size of inspection and screening, while the procts of open circuit crushing system often contain oversized particles larger than the specified particle size. In the process of crushing and screening operation, the process composed of coarse crushing, medium crushing, fine crushing and ultra fine crushing is called crushing and screening process< Taking the concentrator as an example, there are various crushing processes in concentrator,
the common characteristics are as follows:

1 crushing flying section

2 crusher is usually used with screen,

3 crushing section is the basic unit of crushing process, which is usually divided into coarse crushing section, medium crushing section, fine crushing section and ultra fine crushing group. Corresponding crushing and screening equipment is selected for each crushing section.

8. Crusher operation proceres
1, crusher operation should pay attention to the following matters

(1) pay attention to whether there is abnormal impact sound inside

(2) whether the machine runs smoothly and whether the stones enter and discharge smoothly

(3) operation of oil pump, oil flow indicator at each point, oil temperature and oil pressure are normal< (1) the temperature of the oil discharged from the cooler is usually 45-53 ℃< (2) the return oil temperature is less than 60 ℃< (3) the pressure of feed pipe is 0.08-0.15mpa< The crusher should inspect, adjust or replace the following parts

(1) check whether the fasteners are loose, and tighten them if any

(2) check whether the lining plate is loose and worn. After the lining plate is worn to a certain extent, the discharging particle size becomes coarser. The moving cone should be increased to adjust the outlet diameter. If the lining plate is seriously worn, the lining plate with fixed cone or moving cone should be replaced

4. Matters needing attention ring the operation of the crusher

in order to ensure the normal operation of the machine and improve the mechanical time, the crusher should pay attention to the following matters ring the operation:

(1) before use, check the lubrication system, crushing area, correct the tension degree of the belt, and tighten all the screws

(2) start the oil pump motor for 5-10 minutes, check the working situation of the lubrication system, and then start the main motor when it works normally

(3) the crusher can only start feeding after 1-2 minutes of no-load operation. Since the gyratory crusher is full of ore, it is necessary to pay attention to whether the feeding situation is normal, especially for the rocks with much mud and high moisture, to prevent the rocks from blocking the feeding mouth, and to check the discharging situation ring operation. It is not allowed to accumulate rocks in the space under the sealing system

(4) ring normal shutdown, the ore feeding should be stopped first, and the main motor can be stopped only after all the rocks in the crusher are removed

after stopping the oil pump motor, check all parts of the crusher after stopping, and solve the problem immediately

5. Inspection and maintenance of crusher

the factory and mine should formulate regular maintenance system according to the characteristics of stones and proction requirements. Regular maintenance is usually divided into minor repair, medium repair and major repair, and the maintenance content and time are as follows< The content and time of minor repair is about 1-3 months to inspect the main shaft suspension system, st removal system, eccentric shaft sleeve and gear, lining plate, drive shaft, thrust disc and lubrication system and replace lubricating oil<

2. The content and time of medium repair of crusher

medium repair includes all the contents of small repair; Inspect and replace liners if necessary; Inspect and repair the drive shaft, eccentric sleeve, inner and outer bushing, thrust disc, suspension system, electrical machinery and other parts. The maintenance time of medium repair is about 6-12 months

3. Overhaul content and time

overhaul includes all contents of medium overhaul; The maintenance time of major repair is about 5 years. The maintenance time of minor repair, medium repair and major repair varies with the characteristics of stones. When the hard rocks are broken (F = 10-16), the medium repair time is about 3-4 months. When the medium hard and soft rocks are broken (F = 1-5), the medium repair time can be extended to two years, The time of medium maintenance and overhaul is also related to the normal operation, inspection and the performance of inspection and maintenance personnel. Correct operation and careful maintenance is the key to the normal operation of the machine and the improvement of work rate.

9. There are many kinds of coal crushers, such as jaw crusher, hammer crusher equipment is better, cost-effective, cheap equipment, less vulnerable parts
coal crushers also use more counter roller crushers or gear roller crushers.