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December 6, 2010

A detailed description of Jaw Crusher

Filed under: Uncategorized — Tags: — sbmzhcn @ 2:08 pm

SBM jaw crusherJaw Crusher is one of main equipment of stone crushing, is ideally suitable for crushing all kinds of ores and crushing the big size materials, the highest anti-pressure strength of crushed material is 320 Mpa,having two types: primary crushing and secondary crushing.jaw crusher has been sold to 75 countries, the price and quality of jaw crusher is widely recognized, we always stick to be your satisfying partner.

A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism. The jaws are farther apart at the top than at the bottom, forming a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until it is small enough to escape from the bottom opening. The movement of the jaw can be quite small, since complete crushing is not performed in one stroke. The inertia required to crush the material is provided by a weighted flywheel that moves a shaft creating an eccentric motion that causes the closing of the gap.

Single and double toggle jaw crushers are constructed of heavy duty fabricated plate frames with reinforcing ribs throughout. The crushers components are of high strength design to accept high power draw. Manganese steel is used for both fixed and movable jaw faces. Heavy flywheels allow crushing peaks on tough materials. Double Toggle jaw crushers may feature hydraulic toggle adjusting mechanisms.

Jaw crushers should be fed a consistent rate of feed that will result in the crushing chamber being kept full at all times. This will result in more stone-on-stone crushing, reducing the wear on the (jaw die) manganese wear plates, creating a more cubical product, and result in more even wear over the length of the jaw die

Generally all material smaller than the discharge gap should be removed (scalped) prior to being fed into the jaw crusher. This will increase the tons per hour of total production by the plant, and reduce wear on the jaw dies. It will also reduce fines production and increase cubical product.

jaw crusherA jaw crusher should not be sized to the maximum size rock that might be fed to the plant, but a size that will handle 95-98% of the material that might be fed to the jaw. Buying to the maximum size of rock that might be fed the jaw will result in buying a jaw crusher that will be under-utilized, difficult to keep choke-fed, cost more than necessary, and have a much higher operating cost. It will cost less to install grizzly bars over the feed hopper to remove the oversize rocks than to buy an over-sized jaw crusher. They can then be manually broken, sold as rip-rap or erosion control or landscaping boulders.

Jaw crushers are typically used as primary crushers, or the first step in the process of reducing rock. They crush primarily by using compression. The rock is dropped between two rigid pieces of metal, one of which then moves inwards towards the rock, and the rock is crushed because it has a lower breaking point than the opposing metal piece.
There are two basic types of jaw crushers, the overhead eccentric style (shown above), and the double-toggle style. Which will work best for a given operation depends upon several factors.

The Crushing form of this series Jaw Crusher is driven-squeezing style. Its working principle is: Motor drives belt and belt pulley, makes moving jaw up and down through eccentric shaft. When the moving jaw is up, the angle between lining plate and moving jaw becomes large, and this will push moving jaw plate close to the fixed jaw plate. During this process, the material is crushed and ground, thus the crushing will be done. When the moving jaw is down, the angle between lining plate and moving jaw becomes small, the moving jaw plate will leave the fixed jaw plate on account of the effect of pulling bar and spring, and then the crushed material will be discharged from the lower opening of the crushing room. With the motor continuously rotating and the material periodically crushed and discharged by the crusher, the mass production can be realized.

September 15, 2010

Jaw crusher design and maintenance Introduction

Filed under: Uncategorized — Tags: — sbmzhcn @ 2:19 am

In the mineral processing equipment inside, crushing machine is mainly used to crush ore preliminary materials, which work environment is bad, therefore its constituent bodies need a certain amount of optimization and enhanced, should have the necessary knowledge in order to maintain efficiency in production to improve and equipment stability.

As the jaw crusher set by the dynamic E and E constitute the work of the chamber formed under enormous crushing force and friction materials, easy to wear bad, in order to protect the jaw, Hongsen Mining moving surfaces E and E be installed wear of the liner, this liner is also known as broken boards. Broken plates are usually made of tooth surface, and broken plates tooth peak angle 90 ° ~ 120 °, its size has been broken by the fragmentation properties of the materials and determined, breaking bulk materials, the angle should be bigger; broken small piece of material, the angle can be smaller. Pitch depends on the product size, usually get about equal to the width of the discharge port, the high gear ratio with the preferred pitch of 1 / 2 to 1 / 3.

Work, the broken plate wear rate under the two parts is not the same, lower wear faster than the upper, broken plates in the jaw crusher work, direct contact with materials to withstand the great crushing force and friction materials, broken board lifetime is directly related to jaw crusher efficiency and production costs, therefore, to extend the broken jaw crusher plate life is particularly important. E-board to enhance service life can be broken breaking design, material selection, assembly and use of process improvement and other considerations.

At design time, dynamic E and E of the broken board should be set teeth on the tooth peak valley. Thus, when breaking materials in addition to compression, there are bending and breaking of materials easier. To enhance the life of broken plates, small and medium sized crusher broken down into a board design symmetrical shape, a U-turn immediately after the Department of wear use; large jaw crusher broken board designed a few pieces of each symmetry to be worn exchange use the broken board. Broken plate white cast iron materials can be used. Large white cast iron hardness, good wear resistance, the source is easy and cheap; drawback is brittle, easily broken, short life.

In order to improve the life of broken boards, materials with more than 12% manganese steel manganese better common is ZGMn13. Manganese steel toughness, although the hardness is not high (about 210HB), however, because a cold hardening characteristics, under pressure and will continue to be strengthened, so continue to wear it at work continued to strengthen until the wear and tear can not be used to was scrapped. . Manganese steel casting broken board after going through the tough water treatment, water treatment operations generally tough and quenching the same, that is broken is cast out of manganese steel plate heated to 1000 ~ 1100 ℃ in the water after the rapid cooling. Ren treated water can be uniform microstructure, the microstructure and to fixed to avoid the use of the natural deterioration of the phase change not needed. Manganese disadvantage is more expensive, but life, cost, general considerations, ZGMn13 than the white cast iron long life, low cost.

Assembly, the broken plate must be securely attached to E-board, should be pad level between the two, broken plates and the jaw between the use of soft metal (such as lead, zinc, etc.) for gaskets and bolts tightened. Crusher work, broken plate should not be loosening, or easily broken or worn broken plate, reducing the life of broken plates. Therefore, the assembly must be installed, broken plates, thus extending the life of broken plates.

In the production process, broken plates and materials directly, broken very great, especially when broken material hardness greater, leading to installation of bolts broken plate vibration, nut loose, so that broken plate wear and greatly increase the noise, severe broken off or broken plate to equipment downtime, affecting the normal production. In this situation, just before the start tightening bolts, nuts, can not completely resolve the problems, according to the actual situation on site concrete analysis of concrete, practical ways to methods to solve the problem. For example, you can use spring anti-vibration device to resolve broken loose at work in the loose board, thus prolonging the life of broken boards and improve efficiency.

Specific approach is to use spring anti-loose bolts and self-made compact device, which from the inside spring cover, spring, spring cover is composed of outside, to wear the device in the bolt tightening nut, nut because spring is compressed to a certain degree, have a very strong vibration effect produced by the tremendous force of the bolt broken loose by the spring tension automatically power up, so loose bolts Bu Zhiyu, thus extending the life of broken plates, to increase productivity. In short, the process can be used for specific situations to find ways to solve specific problems, to prevent the broken plate loosening, wear increased, broken, etc., thus extending the life of broken plates, reduce costs and enhance efficiency.

September 11, 2010

The use of jaw crusher

Filed under: Uncategorized — Tags: , — sbmzhcn @ 2:30 am

jaw crusher, jaw crusher broken short E (also known as tiger mouth) occurred in 1858, with the reduction ratio. Jaw crusher product size uniform, simple, reliable, easy maintenance, less operating cost, It is a broken device of choice, which is widely used in mining, smelting, building material, highway, railway, water conservancy and chemical industry and other sectors.

This series of crushers crushing compression strength not higher than the most appropriate 320MPa (MPa) of various hard and soft ore, the largest block of material to be broken shall be not greater than the required technical parameters of the second table: impact crusher, commonly known as sand making machine is to use the United States Bamako’s famous "stone at stone" theory and technology crusher, sand production at home and abroad of the actual situation developed out of an international advanced level of high-energy low-power devices, the performance broken equipment in a variety of fine ore plays an irreplaceable role, is the most effective, practical and reliable crushing plant. The crusher is the construction of sand, road sand, cushion material, asphalt concrete and cement concrete aggregate ideal production equipment, jaw crusher is widely used.

Jaw crusher widely used in metal and nonmetal ores, cement, refractories, abrasives, glass materials, construction aggregate, man-made sand and a variety of metallurgical slag crushing and rough grinding operations, particularly in the hard, particularly hard and abrasive materials, such as silicon carbide, silicon carbide, sintered bauxite, magnesite, etc., than other types of broken machine has more advantages. And supporting the use of hydraulic protection jaw broken, can handle a variety of metallurgical slag. For construction sand, gravel roads with priority for the appropriate

August 31, 2010

Types of crushers-jaw crusher machine

Filed under: Uncategorized — Tags: , , , , , — sbmzhcn @ 12:57 pm

jaw crusherJaw crusher  is a widely used stone crusher. jaw crushers are configured for primary crushing of even hardest rock. Our jaw crushers are crushing without rubbing minimum dust oil lubrication, devise having oil or grease lubrication system. SBM crushers are designed for long life service with minimum maintenance for hard, tough, abrasive material and overload high capacity. This service goal has been confirmed by our customers all over the world.

A jaw or toggle crusher consists of a set of vertical jaws, one jaw being fixed and the other being moved back and forth relative to it by a cam or pitman mechanism. The jaws are farther apart at the top than at the bottom, forming a tapered chute so that the material is crushed progressively smaller and smaller as it travels downward until it is small enough to escape from the bottom opening. The movement of the jaw can be quite small, since complete crushing is not performed in one stroke. The inertia required to crush the material is provided by a weighted flywheel that moves a shaft creating an eccentric motion that causes the closing of the gap.

Single and double toggle jaw crusher are constructed of heavy duty fabricated plate frames with reinforcing ribs throughout. The crushers components are of high strength design to accept high power draw. Manganese steel is used for both fixed and movable jaw faces. Heavy flywheels allow crushing peaks on tough materials. Double Toggle jaw crushers may feature hydraulic toggle adjusting mechanisms.

Flexible discharge opening setting of jaw crusher allows perfect match with relative equipments.  jaw crusher is easy to install, operate and maintain. As per Feedback, our experts will make continuous improvements on our products to meet customers’ changing needs. Jaw crusher is widely used in fields of mining, metallurgy, construction, smelting, hydropower and chemical industries etc.
Features:
1. The application of world-class manufacturing processes and high-tech materials.
2. Integrated steel structures are used for the base of bearing;
3. The broken cavity using "V"-shaped structure, so that the actual width of feed is same as nominal width;
4. The broken cavity is deep and without dead zone, increased capacity and output feed;
5. Lubrication system is safe and reliable, convenient of replace parts, easy to maintenance;
6. The outlet employs pad-style adjustment devices, convenient and reliable, and increase the flexibility of the equipment;
7. Low noise, less dust;

August 27, 2010

Do you know jaw crusher?

Filed under: jaw crusher — Tags: , , — sbmzhcn @ 2:46 am

Jaw Crusher

Jaw crusher  is a kind of heavy duty machine which can crush materials into even granularity. This crushing machine has the characteristics of high reduction ratio, high productivity, simple structure, and reliable performance, etc. It is convenient to maintain and practical to use.
Our Jaw crushers can be used in mining industry, metallurgical industry, construction, smelting, road building, chemical industry, and other fields, for crushing various materials whose compressive strength is not more than 320 MPa.

Features:
1. Crushing chamber is deep and has no dead space, which helps improve the feeding capacity and productivity.
2. Our jaw crusher has high reduction ratio and the crushed materials are of the even granularity.
3. Adjustment device of gasket type discharging opening is reliable and convenient to use. The discharging opening has wide adjusting range. This can increase the flexibility of our equipment.
4. Lubrication system is safe and reliable. Accessories are convenient to replace, and little maintenance is needed.
5. Jaw crusher has simple structure, reliable performance and low operating cost.
6. Jaw crusher is a kind of energy saving equipment. Single machine can save 15% ~ 30% energy and whole system saves more than doubled energy.
7. Discharging opening has large adjusting range, so your different requirements can be satisfied.
8. Low noise and little dust.

Advantages:
1. Short toggle plate
2. Low hanging
3. Big swing angle
4. Long service life

Working Principle:
Jaw crusher consists of frame, eccentric shaft, belt wheel, flywheel, movable jaw, side guard plate, toggle plate, toggle backseat, gap adjusting screw, returning spring, fixed jaw plate and movable jaw plate. Toggle plate is also used to guarantee the security.
Jaw crusher  uses electric motor as the motive power. Eccentric shaft is driven by triangle belt and genea wheel, which makes movable jaw make reciprocating motion according to the desired trajectory. Then, materials in crushing chamber (consists of fixed jaw plate, movable jaw plate and edge plate) are crushed and the finished materials are discharged from discharging hole.

Cross From:sbmzhcn.appspot.com/2010/08/26/163005.html

August 25, 2010

jaw crusher and jc jaw crusher introduciton

Filed under: Uncategorized — Tags: , , , , , , , — sbmzhcn @ 3:21 am

New generation crusher , jc series jaw crusher is born with innovative significance. It is newly designed and improved by our experts on basis of their more than 20 years’ crusher manufacturing and designing experience. The unique design concept makes this series crusher achieve perfect combination between crushing efficiency and operating cost. Meanwhile, it has wide range of application, particularly suitable for crushing hard rock, such as basalt, river pebbles.

Features:

1. Durable moving jaw assembly.
2. Integral cast steel bearing housings.
3. Fast and safe setting adjustment.
4. Reasonable cavity design.
5. Larger-size and larger-carrying-capacity bearings
6. Compact & robust structure

Jaw crusher  main parts: jaw guard, main bearings, eccentric shaft, flywheel wheel (lain/grooved), set adjustment, tension rod, toggle plate, jaw stock, movable jaw plate, fixed jaw plate, frame, cheek plate (down), cheek plate (up).

Jaw crusher uses motor as its power, through the motor’s wheels; the eccentric shaft is driven by the triangle belt and slot wheel to make the movable jaw plate move by a regulated track. Therefore, the materials in the crushing cavity composed of fixed jaw plate, movable jaw plate and side-lee board can be crushed and discharged through the discharging opening.

JC series jaw crusher also named European jaw crusher is driven by motor. Through the motor’s wheels, the triangle belt and slot wheel drive the eccentric shaft to make the movable jaw plate move by a regulated track. Then, the materials in the crushing cavity composed of fixed jaw plate, movable jaw plate and side-lee board can be crushed and discharged through the discharging opening.

It is similar to the jaw crusher operating principle, but the working result maybe not the same because of JC jaw crusher’s advantages. That’s also the reason why this jaw crusher is famous in the world.

ball mill

July 27, 2010

crusher machine and stone crusher

Lithotripter(crusher )is the exclusive compound content of particles larger than 3 mm of the total emission rate 50% or more of the crushing machine. Operations often broken by feeding and nesting into coarse grain size of the broken, the broken and petty. Gravel equipment commonly used jaw crusher, jaw crusher, impact crusher, impact crusher, compound crusher, single-stage hammer crusher, vertical crusher, gyratory crusher, cone crusher machine, roll crusher, double roll crusher, combo breaker, a molding machine broken several.

Jaw Crusher jaw plate on the use of two materials extrusion and bending and breaking all kinds of coarse broken or hardness of the material in the crushing machine. The broken body from the fixed jaw plate and movable jaw plates, jaw plates close to the time when the two materials Jibei broken jaw plate away when the two nesting population is less than block from the bottom of the discharged material. It’s crushing action is carried out intermittently. This crusher due to simple structure, reliable and can be broken advantages of hard materials are widely used in mineral processing, construction materials, silicate and ceramics industries.

80 to 20 of the 20th century, 800 tons of material per hour, breaking a large jaw crusher to a particle size has reached approximately 1,800 mm. Commonly used jaw crusher with elbow board and two single brackets. The former moving jaw at work only a simple swing arc, so called simple swing jaw crusher; the latter for the swing arc to move up and down also, so called complex swing jaw crusher. Jaw Crusher widely used in mining, smelting, building material, highway, railway, water conservancy and chemical industry and other sectors, breaking strength no more than 320 MPa of various materials.

Single-plate jaw broken elbow mobile jaw plate up and down movement to promote the role of nesting, and its level of travel is greater than the upper part of the lower part of bulk materials easily broken, so the broken above the elbow plate efficiency. The disadvantage is that jaw plate wear faster, and the materials have been smashing the spontaneous increase in energy consumption. In order to protect the important parts of the machine is not damaged due to overload, and often the shape of the small size of the brackets designed for weak links, overload the machine when it first deformation or fracture.

In addition, to meet the requirements of different marker size and compensation jaw plate wear and tear, but also the addition of nesting population adjustment device, usually in brackets after the frame between the seat and adjust the pads or radiotherapy, wedge. However, in order to avoid damage to replace broken parts to affect production, but also can be used hydraulic equipment to achieve security and adjustment. Some jaw crusher also has a direct hydraulic drive to drive fixed jaw plate, to complete the materials in the crushing action. These two types of hydraulic transmission equipment jaw crusher, often referred to as hydraulic jaw crusher.

Gyrating crusher cone crusher is used in the shell cavity of the cycle within the cone movement of materials generated extrusion, splitting and bending and hardness of coarse broken all kinds of large-scale ore or rock crushing machinery. Broken cone axis with the upper bearing bush in the middle of the beam, the lower end of the eccentric sleeve is placed in the hole. Sleeve rotates around the broken cone axis for eccentric cycle exercise machine of its crushing action is continuous, and therefore the efficiency of higher than jaw crusher. To the early 70s, large gyratory crusher has been able to handle material per hour, 5,000 tons, the largest feeding up to 2,000 mm diameter.

Gyratory Crusher two ways to achieve nesting population adjustment and overload insurance: the first is using mechanical means, the spindle nut to adjust the top, rotate adjusting nut, cone can be broken down or up, so I followed changes nesting bigger or smaller, overloaded, by cutting off the pin on the drive pulley to achieve insurance; The second way is to use hydraulic breakers hydraulic cycle, the spindle is located in the hydraulic cylinder of the plunger, the change under the plunger hydraulic oil can change the volume up and down the cone crusher location, thus changing the nesting population size. Overload, the spindle downward pressure to force the plunger into the hydraulic oil under the accumulator in the hydraulic system so broken down cone to increase the nesting along the mouth of material discharged into the crushing chamber with a non-broken materials (iron, wood, etc.) in order to achieve security.

Cone crusher crusher working principle and the same cycle, but only in the crushed or broken mechanical crushing operations. In nesting crushing operations than the general uniformity of size pieces operational requirements of the high rough, so the lower part of the crushing chamber shall be a parallel to the area, while also speeding up the cycle speed cone crusher for material in the parallel area squeezed by more than one within.

Comparison of crushing operations in the crushing operation of a large coarse broken, so broken loose of its larger volume have increased. To prevent the crushing chamber may give rise to obstruction, without increasing nesting population to ensure that the necessary premise of size marker to be broken by increasing the diameter of the bottom cone to increase the total cross section marker.

Cone Crusher nesting population smaller, mixed with a compound of the non-broken things easier cause of the accident, and because, the crushing operation on the marker size demanding to be adjusted in the liner wear in time after the nesting population, which tapered Crusher insurance and adjusting device is more necessary than the primary crushing operations.

Symons cone crusher overload the insurance, the conical shell to force the compression spring to increase their own in order to increase the nesting population, and expel non-broken material. Nesting population set to be adjusted by adjusting, turn the adjustment sleeve solid shell can be filled with the help of the cylindrical shell on the thread to bring up or down to change the nesting population size. Hydraulic Cone Crusher way of insurance and adjustment of the same Hydraulic Gyratory Crusher.

Roll crusher is to use the friction of the roll surface to bite into the broken areas of materials, so bear squeeze or split and broken machinery. When broken or needs to be increased for coarse crushing ratio, often made in the roll surface of the teeth or grooves to increase the splitting effect. Roll crusher is usually divided by the number of roller single roll, double roll and multi-roller crusher, suitable for primary crushing, breaking or crushing of coal, limestone, cement clinker and stone in the long and soft materials.

Hammer crusher is to use high-speed impact hammer effect on the material for the broken and broken mechanical crushing operations. Articulated high-speed rotating hammer rotor, the lower body with grate bars to control the size marker. First of all the materials into the crusher by the high-speed movement of the hammer impact and the initial break, and also get the kinetic energy, high-speed flying broken plate on the casing wall being broken again. Smaller than the gap of the material grate bars are from outside, is larger than expected gap grate bars in the grate bars on the block again, the impact and grinding by the hammer, until the gap is less than grate bars after being discharged.

Hammer crusher with crushing ratio, uniform particle size marker, less than smashing things, lower energy consumption. However, hammer wear faster, the hard crushing of the applications was limited; another plug because fear of grate bars, not in Congress and the humidity with it crus
hing materials with clay. This crusher is usually used for crushing limestone, shale, coal, gypsum, chalk and other materials in the brittle and soft.

The hammer crusher hammer for the steel ring of the ring coal crusher, hammer crusher is a variant. It uses high-speed impact and the combination of low-speed rolling to break material, and thus obtain more detailed product, mainly used for the crushing of coal power plants, but can also be used for gypsum, salt, chemicals and some crushing of hard materials.
Impact Crusher is the use of panels of high-speed impact hammer rebound effect and the counter plate so that the impact of material broken by repeated mechanical. Hammer solid plate installed in the high-speed rotation of the rotor, and along the crushing chamber by a number of different angles, block counter board layout.

Materials into the role of zone plate hammer by the board before the first hammer impact and the initial break, and also get the kinetic energy, high-speed counter board rushed. Plate collision with the counter material broken again, bounced back to hammer the role of board area, by the board to re-hammer impact. Is repeated until it is broken into the required size and discharged outside the machine. Compared with the hammer crusher, impact crusher broken than the larger and more fully utilize the high-speed impact energy throughout the rotor. However, as easily wear plate hammer, it shattered in the application of hard materials is restricted, often used to rough broken, in pieces or crushing limestone, coal, calcium carbide, quartz, dolomite, iron pyrites, gypsum and chemical raw materials so in the hard-brittle materials below.

Ring hammer crusher main purposes:
The series of hammer crusher is suitable for crushing all kinds of brittle materials, such as coal, coal Chin, coke, slag, shale, loose limestone. The compressive strength of materials, not more than 10MPa, the surface water is not more than 8%.
Winnowing hammer crusher used in construction materials, brick, coal, metallurgy, mining, power, light industry and other industrial sectors, for crushing coal, shale, coal, carbon, lime, cement guessed, Peng Yun-soil and in hard-brittle materials.
Described above, several gravel sand production line equipment and production line stone crusher equipment is essential.
Jaw crusher for cement, coal preparation, power generation and building materials to meet the crushing medium hard and brittle materials such as limestone and coal. Maximum compressive strength of not more than 1500kg/cm2.

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