What is the role of the coarse crusher tooth plate?

For tooth plate crusher crushing, the crushing of material during crusher direct contact with the material, due to being squeezed and ground, often expire soon, the main failure mode of the crown deformation, fracture and wear. In order to reduce the degree of wear failure of the tooth plate, it is necessary to select a suitable wear-resistant material and design, which is one of the main wearing parts of the tooth roller crusher.

The traditional design method is to apply the concentrated force at a certain point on the tooth plate and then divide the force receiving area of â€‹â€‹the tooth plate to obtain the stress on the tooth plate, that is, the deterministic mechanical method, and then carry out the structural parameters of the tooth plate. Research and design, in fact, this method completely ignores the load on the tooth plate is not evenly distributed. The teeth on the roll skin of the double-toothed roller crusher are gradually sharpened, and the teeth at both ends are symmetrical with each other. The material is crushed by the feed port through the roll skin, and the roller is in a certain direction. Rotating, the force that creates a squeeze between the rollers is transmitted to the material through the tip of the teeth. According to the principle of mechanics, the smaller the area of â€‹â€‹the force is, the greater the gravity is, so that the range of the material can be quickly reached, thereby breaking the material. The broken material exits the crushing chamber from the gaps in which the teeth are distributed. The distribution of the teeth above the roller skin of the double-toothed roller crusher also has a certain regularity, which is designed according to the granularity of the crushed materials of different types of double-toothed roller crushers, so as to meet the needs of different customers for materials.

According to the survey, the average service life of a pair of toothed plates is about 3 months, that is, each crusher uses 4 pairs of tooth plates per year. Now we use a double-toothed roller crusher with a pair of tooth plates (one fixed tooth plate and one movable tooth plate), the total weight is about 0.2t, calculated according to the national crusher with a minimum of 10,000 standard units, and consumed annually every year. High manganese 56,000 tons. This is directly included in the material crushing cost, and the loss of the tooth plate becomes another loss in addition to the energy consumption of the double roll crusher. Therefore, how to improve the stress state of the tooth plate and prolong the service life of the front plate has become an issue of increasing concern.

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