What is a Crusher?

Crusher equipment is the main equipment for mining. It mainly crushes stones of different sizes. The crusher equipment mainly includes jaw crusher, impact crusher, impact crusher, ring hammer crusher and cone crusher. device.

Crusher equipment

Crusher equipment mainly includes jaw crusher,

The stone falls directly from the upper part of the machine into a high-speed rotating turntable;

1. This machine is a new type of medium and fine stone crushing equipment, and it is also widely used in the world to replace cone crusher, roller and ball mill.

2. Novel structure, unique and stable operation.

3. Low energy consumption, high output and large crushing ratio.

4. The equipment is small in size, easy to operate, and easy to install and maintain.

5. It has the shaping function, the product is cubic, and the bulk density is large.

6. During the production process, the stone can form a protective bottom layer, the fuselage has no wear and is durable.

7, a small number of easy-wear parts made of special hard wear-resistant materials, small size, light weight, easy to replace accessories.

8. It has less damage to the environment, especially the unique structure of the engine, which reduces noise.

specification	1800	2200	2500	2800	3200	3600	4200
Plate edge height (mm)	300	500	500	640	640	450-700	950
Production capacity (t / h)	3	8	10	16	17	18-22	33
Rotating speed (r / min)	19	14.25	11.81	11.14	11.18	9-12	7
Power of main motor (kw)	5.5	7.5	11	11	15	18.5	30
Tilt angle (o)	45	35 55	35 55	35 55	35 55	45 55	40 50
Weight ( kg )	2240	3150	4910	5660	6520	7120	9672

The maintenance of the machine is an extremely important and regular work. It should be closely coordinated with the extreme operation and maintenance, and there should be full-time personnel on duty inspection.

ready:

1. Tools: wrench, pliers, screwdriver, hammer, shovel, etc.

2. Necessary replacement parts: various short chain links, joints, bolts, nuts, safety pins of the crusher, etc .;

3. Lubricant and turbine oil.

Inspection and processing:

1. The connecting parts of the motor, reducer, hydraulic coupling, head, tail and other parts must be complete, intact and fastened. Reducer and hydraulic shaft joints shall be free of oil leakage and oil leakage, and the amount of oil shall be appropriate.

2. The signal must be sensitive and reliable. The spray sprinkler must be intact.

3. The power cables and operating wires must be neatly hung without being squeezed.

4. Clean the coal, vermiculite and sundries near the machine head, motor, and reducer.

5. The overlap of the working surface scraper conveyor head and the transfer machine tail should be appropriate.

6. The scraper chain is tight, and the scraper and screws must be fully tightened.

7. The trolley of the loader must be stable and reliable.

8. When the loader bridge body is turned on in some cases, there should be no abnormal sound in the operation of each part, and the scraper, chain, and connecting ring should be free of twist, twist, twist and distortion.

9. The crusher and the roadway support at the crusher must be intact and firm.

10. It is necessary to ensure the safety protection net and protection device of the crusher, which will not deform and fail, and is safe and reliable.

11. The roadway support at the loader and crusher must be intact and firm.

In the stone production line, the relatively more equipment used is crusher equipment, including jaw crushers for coarse crushing of stone, impact crushers for secondary fine crushing, or heavy stone crushers for primary molding. Sometimes it is necessary to configure impact crusher (sand making machine) equipment according to process requirements. Where, in the stone production line, most of the maintenance of the equipment is for the maintenance of the crusher equipment. Doing this part of the work will make the maintenance of the stone production line complete smoothly. Briefly describe the maintenance of the crusher equipment from three important aspects.

1,

1. The wearing parts of the crusher (mainly the lining board) are inconvenient to replace, which wastes a lot of manpower and time.

2. The third-level liner of the crusher is damaged quickly, which affects the life of the overall equipment. This can be achieved by improving the third level of crushing.

3. The lack of adaptability in the face of abnormal working conditions is mainly manifested in the lack of automatic release capacity of iron crossing, which seriously restricts its continuous work stability.

4. The grinding and sieving system in the crusher is likely to cause poor discharge and even equipment jamming, which seriously limits the processing capacity of the equipment.

5. The degree of automation needs to be improved. For example, when a superhard material falls into the cavity, it cannot be found in time. Based on this, before the crusher is officially put on the market, it needs to be modified accordingly. The research topic of my research is to modify the equipment of the new conical-toothed roller crusher based on these practical problems.

1. Calculate the ratio of the maximum particle size of the material before crushing to the maximum particle size of the product after crushing. In the formula i = Dmax / dmax, Dmaxthe maximum particle size of the material before crushing;

2.The ratio of the effective width of the feed opening and the width of the discharge opening with a crusher i = 0.85B / b

In the formula, B --- feeder width of crusher; b --- crusher & lt; discharge outlet width; 0.85- ensure the effective width of the crusher to bite the material. The value of the discharge opening width, the coarse crusher takes the maximum discharge opening width; the middle crusher takes the minimum discharge opening width.

3. Use the average particle size to calculate i = Dcp / dcp where Dcpaverage diameter of the material before crushing; dcpaverage diameter of the material after crushing. The crushing ratio obtained by this method can truly reflect the crushing degree of sand and gravel equipment.