Crusher for crushing gravel

It is almost impossible to find a building material with a higher demand than debris. It is part of concrete solutions, it is used for laying sidewalks and landscaped gardens. However, it is not so easy to get cubic meters of solid stone where all the grains are about the same size and shape. In addition to the fact that strong rocks from the bowels of the earth have to be mined, they still need to be crushed to a certain extent. And for that you need at least one durable crusher.

Contents:

1.Main types.
1.1 Jaw.
1.2. Cone.
1.3. Rotary.
1.4. Rollers.
2. Prices of different models.
3. Build your own hands.

All shredded shredders and crushers can be subdivided by the size class of the stone obtained at the exit (mm):

100 to 300;
25 -100;
25-05.

At the same time, most structures can work in one of the specified areas: just reconfigure the machine to get a new fraction in the output. In addition, fixed and mobile models are distinguished. However, the former are only used in large companies that develop strong rock deposits. At the same time, any mobile crusher used to treat ballast, even if less productive, can be used to crush small material and move it to a new location.



At the same time, most structures can work in one of the specified areas: just reconfigure the machine to get a new fraction in the output. In addition, fixed and mobile models are distinguished. However, the former are only used in large companies that develop strong rock deposits. At the same time, any mobile crusher used to process crushed stone, even if its productivity is lower, can be used for grinding small stocks and transporting it to a new location.

In general, the mobile equipment is conical or jamming, with the difference that it regulates raw material fractions and marketable products. Due to the frequent job changes and thus the properties of the ballast are the best solutions. A whole fleet of expensive shredders can be replaced by a universal machine.

1. Main types.

The lower dirt limit at the compression strength is 300 MPa. This material is not widely used on a construction site, but still has a small consumer base. Most of the market has long been conquered by more durable rocks from M600 to M1200. To grind the stones to the desired fractions and to obtain high-quality building materials at the exit, the structures of the crusher must be selected correctly.

1.1 Jaw.

Jaw crusher is one of the most widely used types

They are considered as universal waste machines because they can treat rocks of any resistance. The grinding takes place between two heavy plates, one of which can be moved and the other permanently fixed. The space of the upper part of the cheek can be adjusted up to 1.5 m, depending on the starting size of the raw material. The size of the fraction in the output is set in the same way.

For all the simplicity of the design, these cars are quite capricious: they require regular inspections and frequent repairs. When using jaw crushers, it is recommended to change the sanding plates regularly as they wear unevenly during operation. It also reduces equipment maintenance costs if it is more durable on the wear-resistant metal surface. The disadvantage of these mills is the high proportion of flax grains in the finished waste, a sign of their poor quality. The reason is the peculiarities of the machine, which does not break, but tightens and laminates the stones.

1.2. Cone.

Type Cone Crusher

The functional principle of a crusher for ballast is similar to the destruction of rock in jaw models. However, the grinding surfaces here have a three-dimensional shape and the axis of rotation is specifically unbalanced. As a result, the flagellated grains are subjected to blows from several directions, they find their way and come in the form of cubes. In addition, the stones of the needle collide when they pass through a small space between the cones, and collapse faster.

1.3. Rotary.

Type Rotary Crusher

Able to shred waste in smaller fractions. The strong bindings attached to the tree "lead" the race into the working drum and divide it into powerful blows. The correction takes place when the fragments fly to the walls of the crusher and break in the cladding panels.

However, with this method of destroying rocks, it is impossible to control the size of the gravel at the outlet, so that after grinding, all the mass is sent to a broadcasting screen. A disadvantage of rotary choppers is also considered as not above average limited hardness of the raw materials. In large industries, they are only used in the second milling stage.

1.4 Rollers.

Type of Roller Crusher

Only available in two forms: For fine and medium sanding of gravel. The destruction of the rocks takes place between the rotating mating rolls. They themselves can have a smooth, jagged or raised surface to work with materials of varying thickness. However, the resistance of the broken raw materials must not exceed the average values.

2.Prices of different models.

Buying a second hand investment at a more reasonable price will not succeed. Even if they are edited or restored after a major overhaul, they are not much cheaper. The relatively low cost of breakers for ballast production can only affect very small models that can handle up to tons per hour, or compact laboratory breakers.



Since it is not profitable to buy a shredder for small construction jobs, citizens with technical knowledge can try to do it themselves. No special equipment is required for your own needs, and the design of the machine is simple. Drawings and diagrams can be found in old manuals or on the Internet and assemble the installation from the available metal.

Suitable sources of raw materials are suitable rocks of sufficient hardness on the surface and are available for independent extraction. However, in domestic production, gravel is often made from recycled materials or wastes from mining and processing companies. Their strength is average, so the hammer machine works.

3. Build your own hands.

The machine chosen must match the capacity

The crusher for obtaining cubic gravel consists of several basic elements that you need to make or buy used machinery.

• Capacity in mineral resources.
• Tree with grinding elements (hammering).
• Lattice with holes of the correct size (it is better to have several interchangeable ones for different fractions).
• Electric motor with starting equipment.
• Distance between the axes.
• Pulleys, belts, locks and bearings.

All work must be heavy and powerful enough to grind the gravel. Heavy walled pipes, cast iron plates and large diameter fittings are useful. The camera is cheaper if you cover the interior with separate impact-resistant inserts and sheet metal baking tray.