Sizer Crusher is a double-tooth roller crushing equipment, which is mainly used for raw coal crushing and ore crushing. According to the different teeth of the crusher, it can be divided into primary crushing and secondary crushing.The main components of our sizer crusher manufactured by EXCT are drive part, frame part, tooth roller part, synchronous wheel part, walking device part, lubrication part, etc. 1. A broken tooth
Our company can choose reasonable tooth shape and determine the most suitable configuration according to the types of crushing materials provided by customers, working environment, particle size of material in and out, capacity, maintenance and other factors. It can be roughly divided into two structural forms :(coarse broken, fine broken) The following are the commonly used crushing tooth types in our company.
A. Fine fracture (tooth plate type)
Grading type tooth roller crusher for coal feeding particle size ≤300 (allowing a small amount of 400mm), discharge particle size of 30mm, 50mm, 80mm, 100mm, etc., can break coal gangue and rock of medium strength:
The structure type of the broken tooth is adjusted to the tooth plate structure, and the tooth plate is made of integral casting of Zgmn13Cr2, which is heat treated after precision casting.The service life of tooth plate is guaranteed to be more than 18 months.
The tooth plate is fixed in the form of a unilateral dovetail groove, which is complementary to the inclined surface of the insert clamping block, and then the tooth plate is installed on the tooth plate fixing seat to form a face-to-face connection, which is tightened by bolts.
The tooth shape and fixing method of the broken tooth plate are advanced. There are two forms of surfacing wear-resistant material and wear-resistant micro-alloy integral casting, which have long service life.
Tooth plate seat material selection ZG310-570, CNC gantry milling machine overall processing tooth plate fixed keyway, one side dovetail groove is processed by special Angle milling cutter.
B. Coarse fracture (ring tooth type)
Coal classification type tooth roller crusher feeding granularity ≤1200mm, discharge granularity ≤300mm, 250mm, 200mm, etc., can break coal rock and medium strength rock.
The crushing teeth are heat-treated after precision casting with special formula materials, with high strength, good toughness, wear resistance and impact resistance. The crushing strength is as high as 200MPa.Unique and novel tooth design structure, deep spiral distribution, strong biting ability, high block forming rate, low over crushing rate, high production efficiency.By example verification, far beyond the same industry service life (0.5-1.5 years), up to more than 3 years.
According to the actual situation of the site, the broken teeth are made of wear-resistant and impact resistant alloy steel as a whole (as shown in Figure A) or the broken teeth are made of crown-type structure (as shown in Figure B) (the tooth head is made of wear-resistant and impact resistant medium alloy steel for precision post-casting heat treatment). The precision post-casting heat treatment has the hardness HRC≥45-55 and impact toughness ≥45kg·m/cm2.
Main advantages of crown type:
(1) Convenient installation and disassembly of the broken tooth crown:
(2) Easy maintenance:
(3) Cost reduction:
Fixed form of crushing tooth
(1) The sizer crusher teeth are loaded into the crushing roller shaft by high-frequency heating with the new solid high-frequency heating device, and the special properties of the material are utilized to ensure the firm and reliable coordination with the shaft;
(2) Forgings of 40Cr and 42CrMo are selected for the crushing roller shaft. CAE force analysis is adopted to ensure reasonable and safe design, which can effectively avoid bending and fracture of the roller shaft.
(3) the processing of roller shaft: large lathe processing of the outer circle and end face, heat treatment after processing, and then grinding grinding machine, keyway in CNC gantry milling machine finishing milling;
(4) After heat treatment of the high-strength thickened key, the grinding machine is precision processed, and the keyway matching precision of the crushing tooth roller is higher than the national standard requirements:
C, pick tip
Tooth can also be made according to the situation of coal, the broken section of tooth type, the cutting tooth when cutting coal and rock under high cyclic compressive stress, shearing stress and impact load, the hardness of coal is not high, but it often hard ore, such as the coal gangue, coal and rock cutting process caused by friction, impact will pick temperature, in such a complex under the working conditions of cutting tooth, requires that the pick is to wear and should have good impact performance.The cutter is mainly composed of cutter handle, cutter head and alloy cutter head. The cutter handle and cutter head are often called cutter body.Hardened and tempered steel cutter body with low alloy structure is inlaid with carbide cutter head.Hardness HRC≥45-55, impact toughness ≥45kg·m/cm2:
Pick tip fixed form
(1) The cutter is mainly composed of a cutter handle, a cutter head and an alloy cutter head. The cutter is fixed on the tooth disc as a whole: the tooth disc is fixed on the shaft through a locking sleeve and a fixed baffle:
(2) Forgings of 40Cr and 42CrMo are selected for the crushing roller shaft. CAE force analysis is adopted to ensure reasonable and safe design, which can effectively avoid bending and fracture of the roller shaft.
(3) the processing of roller shaft: large lathe processing of the outer circle and end face, heat treatment after processing, and then grinding grinding machine, keyway in CNC gantry milling machine finishing milling.
2. Secondary crushing and particle size regulating device
Our company can adjust the particle size of the material according to the actual situation of the site. The secondary crushing beam is specially designed and installed. The crushing beam is set directly under the two tooth rollers and is fixed on the lower side of the crushing box.The single tooth roller and the secondary crushing beam form a new three-dimensional discharging space after the two tooth rollers run opposite each other to crush the material, which can effectively control the discharging granularity.
Sizer Crusher Features:
A. The overall equipment occupies a small area, suitable for downhole installation space limited occasions.
B. The overall equipment adopts modular design, convenient assembly and disassembly, simple operation.
C. The overall weight of the equipment is light. In the horizontal direction of 1m from the outer surface of the crusher, the noise at 1m above the ground does not exceed 85dB(A).≤60dB(A) 10 meters away from the equipment.
D. The whole machine is fixed and flexible, which can be installed on the ground or welded with the steel structure, or made into a walking device according to customer needs.The equipment should be made into a walking device with customer requirements.With power switch function, no need for special fixing. E. The sizer crusher tooth is made of wear-resistant and impact-resistant alloy steel, which is wear-resistant and impact-resistant, and has a service life of more than 0.5-2 years.Side tooth plate in more than 15000 hours.After several years of wear and tear, the tooth plate and the side tooth plate can be welded with wear-resistant metal high chromium iron.In order to ensure that the crusher overall discharging strength still meet customer demand.
F. Frame material Q345 welding parts, post-welding heat treatment, precision processing, precision assembly, to ensure reliable product quality and safety performance.Long service life.
G. The edge tooth plate adopts bolt connection, which is convenient to use and maintain and saves maintenance cost.
H. Reliable mechanical protection and electrical protection to ensure the safe use of equipment, and emergency protection of equipment.
I. Through modularization and standardization of equipment, each link from design to production is optimized to complete the optimal configuration of equipment and products that are more suitable for customers with the best cost performance.
J. Good sealing measures are taken at all the joint surfaces to prevent air leakage, dust leakage and oil leakage.The replacement cycle of box joint surface seal, inspection door seal and bearing seal is an overhaul cycle.