Jaw crusher

Jaw crusher

Applications: sand and gravel yard, crushing mining, crushing coal mining, concrete mixing plant, dry mortar, power plant desulfurization

Applicable materials: river pebbles, granite, basalt, iron ore, limestone, quartz, gangue, construction waste, etc.

Feed size: 120-1500mm

Production capacity: 1-2200 t / h

Jaw crusher is called jaw broken, is the early crushing equipment, because of its simple structure, strong, reliable, maintenance and easy maintenance and production and construction costs are relatively small, so until now is still widely used in metallurgy, chemical , Building materials, electricity, transportation and other industrial sectors, for the compressive strength of 147-245MPa in a variety of ore and rock rough, medium, crushing. In order to meet the metallurgical, mining, construction and other industrial sectors broken high strength, high hardness needs, machine has been put into a lot of manpower, material and financial resources for the development of energy efficient new jaw crusher, there are more new jaw crusher The

Jaw crusher is mainly used for a variety of ore and large pieces of material medium size broken, widely used in mining, smelting, building materials, roads, railways, water conservancy and chemical industries. The compressive strength of the crushed material is not more than 320MPa.

Working principle of jaw crusher

Jaw crusher mainly by the rack, eccentric shaft, large pulley, flywheel, side guards, brackets, elbow rear seat, gaping screw, reset the spring, fixed jaw plate and movable jaw plate and other components.

Jaw crusher crushing method for the song squeeze type. In the work, the motor drives the belt and the pulley, moves the movement jaw up and down through the eccentric shaft. When the moving jaw rises, the angle between the brackets and the moving jaw becomes larger, so as to push the moving jaw towards the jaw plate, Between the brackets and the moving jaw between the smaller, moving jaw plate in the rod, the role of the spring to leave the jaw plate, has been broken material In the role of gravity, the jaw cavity at the lower part of the discharge port free discharge. With the continuous rotation of the motor, moving jaw to do the cycle of crushing and discharge, to achieve mass production.

Jaw crusher Jaw crusher Jaw crusher Jaw crusher

Technical Specifications of jaw crusher:

Jaw crusher for a variety of ore rock broken the first process, the compressive strength can not be higher than 320MPa of a variety of ore disposable processing to medium size, often with the cone crusher, impact crusher, sand making machine And so together constitute a complete set of sand and gravel production lines, widely used in mining, metallurgy, chemicals, building materials, electricity, water conservancy, transportation and other fields.

Due to the performance of the machine (negative support, zero suspension) and the mechanical structure of the restrictions, the design used a single, double jaw jaw mosaic structure, making the machine structure is very compact.

  • 1, the discharge port adjustment: double-chamber double-action jaw jaw crusher discharge port width can be adjusted according to user needs, by adjusting the position of the bracket (with the machine side of the two pairs of bolt top wire adjustment) to adjust After the gasket is placed on the brackets, then the top of the plug can be relaxed to obtain the required discharge port size, the discharge port adjustment range of 5-30mm.
  • 2, Feeding adjustment device: the upper part of the machine is set to a hopper, in the middle of the provision of feed adjustment baffle. The baffle can be adjusted to the main and crushing chamber side, and its role is to control the inclination of the plate to control the amount of feed in the two crushing chambers.
  • 3, the reset spring: the machine design using a single, double-jaw jaw mosaic structure, compared with the traditional crusher in the structure is completely different, reset the spring set by its structural constraints, can only use the current Way, in the middle of the middle of the two moving jaw in the form of tension to pre-tensioned.
  • 4, overload protection: PSS150X400 double-chamber double-action jaw jaw crusher overload protection design reference to the traditional structure of the negative support jaw crusher, bracket and rack as a whole, with the elbow hinge in the rack and Moving jaw, so that it plays the role of overload protection.

Structure of jaw crusher

  • 1, rack
  • The frame is a four-walled rigid frame with upper and lower openings for the reaction of the eccentric shaft and subjected to crushed material. It requires sufficient strength and rigidity. It is usually cast with cast steel. The minicomputer can also use high quality cast iron instead of cast steel. Mainframe racks need to be cast into pieces, and then bolted firmly into the whole, the casting process is complex. Self-made small jaw crusher can also be welded with thick steel plate, but the stiffness is poor.

  • 2, jaw and side guards
  • Both the jaw and the jaw are composed of a jaw bed and a jaw plate, the jaw plate is a working part, fixed with bolts and wedge iron on the jaw bed. Jaw jaw bed is the front wall of the frame, moving jaw jaw bed hanging on the shaft, there must be enough strength and stiffness to withstand the broken reaction, and thus mostly cast steel or cast iron pieces.

  • 3, transmission parts
  • Eccentric shaft is the jaw crusher spindle, by a huge bending torque, the use of high-carbon steel manufacturing. Eccentric parts to be finished, heat treatment, bearing lining with Pasteurite casting. Eccentric shaft end with wheel, the other end of the flywheel.

  • 4, adjust the device
  • The adjustment device is wedge type, pad type and hydraulic type, generally wedge type, composed of two wedges before and after, the front wedge can move back and forth, to withstand the rear push plate; after the wedge for the adjustment wedge, can be up and down Move the two wedges of the slope back to fit, by the screw to move the wedge up and down to adjust the size of the outlet. The movement of the small jaw crusher is achieved by increasing the number of shims between the thrust bearing and the rack.

  • 5, flywheel
  • Jaw crusher flywheel used to store moving jaw empty stroke of the energy, and then used in industrial formation, so that the work of the machine in line with the uniform, pulley also plays the role of flywheel, flywheel often cast iron or cast steel, Minicomputer flywheel often made of integral, flywheel manufacturing, installation should pay attention to static balance.

  • 6, lubrication device
  • Eccentric shaft bearings are usually lubricated with concentrated circulation. Spindle and thrust plate support surface generally use grease through the manual oil gun to the oil. Moving jaw swing angle is very small, so that the spindle and the bearing between the lubrication difficult, often in the bottom of the bearing to open a number of axial oil groove, the middle of a ring to the oil tank to connect, and then forced into the oil pump oil lubrication.

Selection method of jaw crusher

The market jaw crusher specifications of the number of models, in the selection of the user must follow the correct method steps, so as to choose the most suitable jaw crusher model to achieve double the benefits, the following is the SBM machine expert summary Selection method of jaw crusher specification model.

Jaw crusher
  • 1, to understand the nature of the material
  • Different types of jaw crusher, the applicable material is different, then the jaw crusher can break the material, the user before selecting the model, the need for processing materials, hardness, structure, humidity and other mineralogical characteristics of a detailed analysis, and The production environment to examine, and thus select the material properties to match the jaw crusher model.

  • 2, to understand their own production requirements
  • Due to the different size of the manufacturers, the jaw crusher production requirements are also different, usually large models of jaw crusher more adaptable, higher yield, but the price is more expensive, for the smaller manufacturers, the purchase of this Type jaw crusher but not achieve better crushing effect, not considerable benefits, therefore, the user must be based on their own production requirements and production options for their own specifications.

  • 3, to understand the cost-effective equipment
  • The cost of a jaw crusher refers to the ratio of performance and price, each user wants to buy a cost-effective equipment, so the user before the selection, the need for each jaw crusher structure, quality, broken Efficiency, production, energy saving and environmental protection and other aspects of the comprehensive performance to understand, and ultimately to a lower price to buy high-quality jaw crusher equipment.

The correct feeding method of jaw crusher

Jaw crusher, important stone crushing equipment. Due to the different mineral properties of various materials and the user's production requirements are different, the choice of jaw crusher models are not the same. In the actual production process, the feedstock as an important part of the broken material, if the jaw crusher material reasonable, can achieve the dual objectives of production and income

  • 1, in the stone crushing production line, the general front jaw crusher will install a feeder. Whether the feeding equipment configuration has a reasonable impact on the jaw crusher production efficiency. If the amount of feed evenly, and the feeder throughput and jaw crusher processing capacity to match, to achieve material balance, it is the right way to feed.
  • 2, before the material into the jaw crusher can be configured before a filter screen to facilitate the screen to be broken material mixed with the material and viscous material, which can effectively alleviate the mine block plug to avoid jaw crusher overload operation , Reduce the jaw crusher production efficiency.
  • 3, the feeding method to be reasonable. The material needs to be evenly distributed in the jaw crusher's crushing chamber. The speed of the material entering the crushing chamber and the drop height also affect the crushing efficiency. Therefore, it is necessary to find an effective way to improve the production efficiency of the jaw crusher. If the jaw crusher is shut down, remember that no longer feed, or jaw crusher cavity there are residual materials, you need to clean up in time.
  • 4, jaw crusher feeding size to be reasonable. If the jaw crusher feed port adjustment is too large, put too much material, jaw crusher opportunity to work, not only affect the jaw crusher production efficiency, may delay the project duration; if the jaw crusher, feeding Mouth adjustment is too small, likely to cause blocking material, card material, jaw crusher prone to failure, and the jaw crusher life will be shortened, so jaw crusher in the course of the operation, a reasonable feeding is necessary of.

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