A new toothed roll crusher

Abstract

The utility model discloses a novel toothed roll crusher, including first toothed roll and second toothed roll, the center distance between first toothed roll and second toothed roll is greater than the sum of the radius of first toothed roll and second toothed roll, and less than the sum of the radius of first toothed roll, the radius of second toothed roll and half finished product maximum particle size size, thereby reduce the time and times of extrusion of material in the cavity formed between first toothed roll or second toothed roll, realize the purpose of reducing powder particle, after the technical improvement of above -mentioned structure, the powder particle rate of the silicon manganese alloy of crushing is close to artificial crushing, and the total crushing cost of every ton is less than artificial crushing 10 yuan or so, can replace artificial crushing completely, and can produce 200 million economic benefits for enterprise every 200 million tons output, has good popularization effect.

Description

Technical Field

[0001] This utility model relates to the field of material crushing technology, and in particular to a novel toothed roller crusher. Background Technology

[0002] Currently, when crushing brittle materials such as coal, ferroalloys, coke, and stones, the value of the powdery materials produced after crushing (the particle size range varies for different varieties, but qualified products all have minimum particle size requirements, with ferroalloys generally below 10mm) is lower than that of the finished product. Therefore, it is desirable to produce as few powdery materials as possible after crushing.

[0003] Tests showed that crushed silicon-manganese alloy produces particles ranging from 10 to 70 mm. Among the various crushing equipment currently on the market, including jaw crushers, hammer crushers, cone crushers, impact crushers, and toothed roll crushers, the toothed roll crusher, using simple compression crushing, produces approximately 9% of particles smaller than 10 mm, while other crushers produce over 12%. Therefore, when using machine crushing, choosing a toothed roll crusher is the optimal strategy for crushing these materials. Manual crushing with a hammer produces approximately 5% of the particles, and manual crushing also suffers from low efficiency, high labor costs, and poor safety.

[0004] Therefore, mechanical crushing replacing manual crushing is an inevitable trend, but it can only become a reality if the particle size distribution of mechanical crushing is reduced to be close to that of manual crushing.

[0005] Research and experimentation have revealed numerous factors influencing particle generation during toothed roll crushing, and optimization or modification can further reduce the particle rate. The utility model patent CN219168526U, titled "A Vertical Toothed Roll Crusher and Feeding Structure," has already modified the feeding structure and the installation angle of the toothed rolls, resulting in a reduction in particle size. However, existing conventional toothed roll crushers still suffer from the significant problem of unreasonable toothed roll center distance, leading to a higher particle size after crushing. For example... Figure 1 As shown, when the thickness of the material entering the toothed roller crushing cavity is A, the distance from the point where the material begins to be crushed to the outlet of the crushing cavity (the line connecting the centers of the toothed rollers) is H1. As the material passes through the crushing cavity at a height of H1, there will be continuous mutual compression between materials and between the material and the toothed rollers. Each compression will inevitably produce some particles. The larger H1 is, the more times the material is compressed, and the more particles are produced. When the thickness A of the material and the outer diameter D of the toothed rollers are determined, H1 is inversely proportional to the center distance B1 of the toothed rollers; the smaller B1 is, the larger H1 is, and the more particles are produced during crushing.

[0006] Currently, most toothed roll crushers on the market use integral cast steel or a combination of segmented cast steel for their toothed rolls. The center distance between the toothed rolls is smaller than the diameter of the roll. Axially, the teeth overlap. The smaller the center distance, the more overlapping the teeth, and the higher the teeth. This results in longer wear time and a longer lifespan for the toothed roll. However, this is precisely one of the important reasons why existing toothed roll crushers produce a large amount of powder (e.g., ...). Figure 2 (As shown). Therefore, further technical improvements are needed. Summary of the Invention

[0007] This utility model addresses the aforementioned problems by proposing a novel toothed roller crusher to solve them.

[0008] To achieve the above technical objectives, this utility model employs a novel toothed roller crusher, applicable to the crushing of brittle materials such as coal, ferroalloys, coke, and stones. It includes two parallel toothed rollers, a first toothed roller and a second toothed roller, with a certain distance between them; the distance between the first toothed roller and the second toothed roller is adjustable through an adjustable structure.

[0009] The upper part of the first toothed roller is provided with multiple first alloy toothed rings and multiple first spacers. The toothed rings and spacers are arranged in sequence and connected to the reducer of the toothed roller crusher through a first connecting shaft. The upper part of the second toothed roller is provided with multiple second alloy toothed rings and multiple second spacers. The toothed rings and spacers are arranged in sequence and connected to the reducer of the toothed roller crusher through a second connecting shaft.

[0010] The center distance between the first toothed roller and the second toothed roller is greater than the sum of the radii of the first toothed roller and the second toothed roller, and less than the sum of the radius of the first toothed roller, the radius of the second toothed roller, and half of the maximum particle size of the finished product. This reduces the time and number of times the material is squeezed in the cavity formed between the first toothed roller or the second toothed roller, thereby reducing the amount of powder particles.

[0011] Furthermore, when the center distance between the first and second toothed rollers is greater than the sum of the radii of the first and second toothed rollers, the distance between the inlet position of the crushing cavity where the material begins to be crushed and the outlet position of the crushing cavity can be shortened. When the material passes through the crushing cavity at this height, the mutual crushing time and frequency between materials and between materials and the first and second toothed rollers are reduced, and the amount of powder generated is reduced accordingly.

[0012] Furthermore, the structure described above is applicable to horizontal toothed roll crushers where the centerline between the first and second toothed rolls is horizontal, or to vertical toothed roll crushers where the centerline between the first and second toothed rolls is inclined at an angle.

[0013] Furthermore, the outer diameters of the first toothed roller and the second toothed roller may be equal or unequal.

[0014] After adopting the above-mentioned structural technical improvements, the powder ratio of the crushed silicon-manganese alloy is close to that of manual crushing, and the total crushing cost per ton is about 10 yuan lower than that of manual crushing. It can completely replace manual crushing and can generate an additional 2 million yuan in economic benefits for enterprises with an output of 200,000 tons, which has a good promotion effect. Attached Figure Description

[0015] Figure 1 The diagram shows the relative positions of the toothed rollers in a conventional crusher.

[0016] Figure 2 The diagram shown is a top view of the toothed roller structure of a crusher currently on the market.

[0017] Figure 3 This is a schematic diagram showing the relative positions of the toothed rollers in the improved crusher.

[0018] Figure 4 This is a diagram of the external structure of the toothed rollers in the improved toothed roller crusher.

[0019] Among them, 1. First toothed roller; 2. First alloy toothed ring; 3. First spacer; 4. First connecting shaft; 5. Second toothed roller; 6. Second alloy toothed ring; 7. Second spacer; 8. Second connecting shaft. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0021] Combination Figure 3 It is known that a new type of toothed roll crusher is used for crushing brittle materials such as coal, ferroalloys, coke, and stones. This new toothed roll crusher includes two parallel toothed rolls, a first toothed roll 1 and a second toothed roll 5, which are installed at a certain distance from each other. The distance between the first toothed roll 1 and the second toothed roll 5 is adjustable through an adjustable structure. At the same time, the first toothed roll 1 and the second toothed roll 5 are installed at the upper part of the toothed roll crusher.

[0022] Combination Figure 3 As can be seen, in this utility model, the upper part of the first toothed roller 1 is provided with a plurality of first alloy toothed rings 2 and a plurality of first spacers 3. The first alloy toothed rings 2 and the first spacers are arranged in sequence and connected to the reducer of the toothed roller crusher through the first connecting shaft 4. Similarly, the upper part of the second toothed roller 5 is provided with a plurality of second alloy toothed rings 6 and a plurality of second spacers 7. The second alloy toothed rings 6 and the second spacers 7 are arranged in sequence and connected to the reducer of the toothed roller crusher through the second connecting shaft 8.

[0023] As an innovative structural feature of this invention, the center distance between the first toothed roller 1 and the second toothed roller 5 is greater than the sum of the radii of the first toothed roller 1 and the second toothed roller 5, but less than the sum of the radius of the first toothed roller 1, the radius of the second toothed roller 5, and half of the maximum particle size of the finished product. This structural arrangement reduces the time and number of times the material is squeezed in the cavity formed between the first toothed roller 1 and the second toothed roller 5, thereby reducing the amount of powder. When the center distance between the first toothed roller 1 and the second toothed roller 5 is greater than the sum of the radii of the first toothed roller 1 and the second toothed roller 5, the distance between the inlet position of the crushing cavity where the material begins to be crushed and the outlet position of the crushing cavity is shortened. When the material passes through the crushing cavity at this height, the time and number of times the material is squeezed against each other and against the first toothed roller 1 and the second toothed roller 5 are reduced, thus reducing the amount of powder produced.

[0024] We combine Figure 3 and Figure 4 To further explain, in combination Figure 3 and Figure 4 It can be seen that when the thickness A of the material being crushed and the outer diameter D of the first toothed roller 1 and the second toothed roller 5 are equal and unchanged, the center distance B2 between the first toothed roller 1 and the second toothed roller 5 is greater than the diameter D of the toothed roller. This will significantly reduce the distance H2 from the point where the material begins to be crushed to the outlet of the crushing cavity. When the material passes through the crushing cavity with a height of H2, the time and number of mutual compression between materials and between materials and the first toothed roller 1 and the second toothed roller 5 will be significantly reduced, and the amount of powder produced will also be significantly reduced.

[0025] The structure of this utility model, specifically, determines the minimum particle size when the center distance B2 between the first toothed roller 1 and the second toothed roller 5 exceeds the roller diameter D. This requires manufacturing an adjustable center distance for on-site adjustments based on factors such as feed particle size, output particle size requirements, and the brittleness of the crushed material. The size of the discharge opening is formed by the outer diameter of the spacer and the tooth root of the opposite toothed roller, ensuring the maximum particle size requirement of the crushed product. Therefore, as the center distance between the toothed rollers increases, the outer diameter of the spacer must also increase accordingly, and the tooth height must decrease accordingly to ensure that the size of the discharge opening meets the maximum particle size requirement of the crushed product.

[0026] It is important to note that the reduced tooth height will inevitably shorten the service life of the toothed roller. Therefore, the toothed roller adopts a combination structure of alloy toothed ring and spacer. Both the alloy toothed ring and spacer are made of forged steel, which has a denser structure than cast steel and is therefore more wear-resistant. The service life of the alloy toothed ring can also be extended by using more wear-resistant materials, increasing surface carburizing and nitriding heat treatment processes, laser cladding of wear-resistant alloys on severely worn tooth surfaces, and repairing worn tooth surfaces with wear-resistant welding rods.

[0027] In practical use, the structure of this utility model is suitable for horizontal toothed roll crushers where the center line between the first toothed roll and the second toothed roll is horizontal, or for vertical toothed roll crushers where the center line between the first toothed roll and the second toothed roll is inclined at an angle.

[0028] After adopting the above-mentioned structural improvements, and through our on-site comparative testing at the enterprise, we found that using a conventional toothed roller crusher with an outer diameter of 600mm and a center distance of less than 10mm between the toothed rollers, and a new type of toothed roller crusher with an outer diameter of 600mm and a center distance of more than 12mm between the toothed rollers, the crushed product was 10-70mm silicon-manganese alloy. The conventional toothed roller crusher produced a particle size of 9.2% smaller than 10mm, while the new toothed roller crusher produced a particle size of 4.5% smaller than 10mm. The particle size is close to that of manual crushing, and the total crushing cost per ton is about 10 yuan lower than that of manual crushing. It can completely replace manual crushing and generate an additional 2 million yuan in economic benefits for the enterprise for every 200,000 tons of output.

[0029] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel toothed roller crusher, applied to the crushing of coal, ferroalloys, coke, and rocks, comprising two parallel toothed rollers and a second toothed roller, with a certain distance between them; the distance between the first toothed roller and the second toothed roller is adjustable through an adjustable structure. The first toothed roller has multiple first alloy toothed rings and multiple first spacers on its upper part. The toothed rings and spacers are arranged sequentially and connected to the reducer of the toothed roller crusher via a first connecting shaft. The second toothed roller has multiple second alloy toothed rings and multiple second spacers on its upper part. The toothed rings and spacers are arranged sequentially and connected to the reducer of the toothed roller crusher via a second connecting shaft. Its characteristic is that: The center distance between the first toothed roller and the second toothed roller is greater than the sum of the radii of the first toothed roller and the second toothed roller, and less than the sum of the radius of the first toothed roller, the radius of the second toothed roller, and half of the maximum particle size of the finished product. This reduces the time and number of times the material is squeezed in the cavity formed between the first toothed roller or the second toothed roller, thereby reducing the amount of powder particles.

2. A toothed roll crusher as claimed in claim 1, characterized in that The structure is suitable for horizontal toothed roll crushers where the centerline between the first or second toothed roll is horizontal, or for vertical toothed roll crushers where the centerline between the first or second toothed roll is inclined.

3. A toothed roll crusher as claimed in claim 1, wherein, The outer diameters of the first toothed roller and the second toothed roller are equal or unequal.

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