Crushing tooth with high block proportion for coal briquette crusher

Abstract

The utility model discloses a crushing tooth for a coal crusher with high block proportion, which comprises a coal crushing roller body, the crushing tooth is arranged on the coal crushing roller body, the coal crushing roller body is formed by sequentially sleeving a plurality of tooth roller units on a screening machine main shaft, the tooth roller units are disc-shaped, the crushing tooth is in a circular truncated cone shape, and the crushing tooth is arranged on the screening machine main shaft. And all the circular-truncated-cone-shaped crushing teeth are bent in the same direction along the circumference of the coal crushing roller body. By changing the tooth-shaped structure of the tooth roller, the size and the direction of crushing force can be better controlled, the proportion of crushed blocky coal is effectively increased, the tooth-shaped structure has the function of avoiding crushed small blocks, secondary crushing of the small coal blocks is reduced, over-crushing is reduced, and the fine powder rate is reduced. In addition, the coal breaking roller body is of a split tooth roller structure, the blank casting and machining difficulty is reduced, the production cost can be greatly reduced, and meanwhile, the tooth roller of the coal breaking machine is convenient to install and replace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the coal block crushing technical field, concretely relates to a crushing tooth for coal block crusher with high block proportion. BACKGROUND

[0002] In the coal processing process, the coal block crusher plays a crucial role. The traditional coal block crusher tooth shape structure often has difficulty in accurately controlling the crushing force and method when crushing coal blocks, resulting in uneven distribution of the particle size of the crushed coal blocks, with too much fine powder and a low proportion of block coal. This not only reduces the quality and economic value of the coal product, but also may affect the transportation, storage, and utilization efficiency of the subsequent coal. For example, in some industrial production that requires block coal as raw material, such as the fixed bed gasification process in coal chemical industry, there are strict requirements for the particle size and shape of block coal, and the crushed coal blocks from the traditional crusher cannot meet these requirements, thereby limiting the efficient utilization of coal resources.

[0003] Currently, in the field of coal crushing, the tooth shape structure of the crusher used to crush large coal blocks into small coal blocks required in production is too sharp, generally being a four-pyramid or three-pyramid structure, and the distance between the two tooth rollers is relatively close. In the process of crushing coal blocks, this results in uneven distribution of the particle size of the crushed coal blocks, with too much fine powder and a low proportion of block coal. SUMMARY

[0004] The utility model aims at overcoming the above-mentioned defects, providing a crushing tooth for coal block crusher with high block proportion to solve the problem of low proportion of block coal after crushing by the existing coal block crusher.

[0005] The purpose of the utility model is achieved by the following way:

[0006] A crushing tooth for coal block crusher with high block proportion, comprising a coal breaking roller body, a crushing tooth is arranged on the coal breaking roller body, the coal breaking roller body is composed of a plurality of tooth roller units which are sequentially sleeved on a screening machine main shaft, the tooth roller unit is disc-shaped, the crushing tooth is circular truncated cone-shaped, and all the circular truncated cone-shaped crushing teeth are curved in the same direction along the circumference of the coal breaking roller body.

[0007] The tooth roller unit and the crusher main shaft are key connected.

[0008] The tooth roller unit is disc-shaped, two circles of crushing teeth are arranged on the outer surface of the tooth roller unit, each circle of crushing teeth is circular truncated cone-shaped and uniformly distributed, the crushing teeth of adjacent circles are curved in the same direction and are staggered.

[0009] Compared with the prior art, the utility model has the following technical effects:

[0010] The utility model discloses a tooth shape structure of changeable tooth roll can better control the size and direction of crushing force, effectively improve the proportion of block coal after crushing, and the tooth shape structure has the avoidance left and right to the small piece that has been crushed, reduces the crushing of small coal piece again, reduces the over crushing, reduces the fine powder rate. Another coal breaking roller body of the utility model discloses the split tooth roll structure, and the blank casting and the mechanical processing difficulty are reduced, can greatly reduce the production cost, and the coal breaker tooth roll installation and replacement are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic diagram of the utility model.

[0012] Figure 2 It is the tooth roll unit structure schematic diagram of the utility model.

[0013] Figure 3 It is Figure 2 Left view.

[0014] Figure 4 It is the reference diagram of the utility model using state. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment.

[0016] It should be noted that: similar signs and letters indicate similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0017] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like are based on the orientation or position relation shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and are not indicative or implied that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as the limitation of the utility model.

[0018] In the utility model, unless another definite provision and limitation, the terms "mount", "connect", "connect", "fix" and so on should do the broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated, can be direct connection, also can be indirect connection through the intermediate medium, can be the communication of two elements inside or the interaction of two elements.For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0019] In the cement clinker production process, the performance and operation reliability of the grate cooler are directly related to the operation rate of the kiln system, the clinker quality and the system energy consumption, and are one of the most important and key devices in the cement clinker firing system.

[0020] The grate cooler is a key equipment on the cement production line, which not only can rapidly cool the material, but also can recycle and reuse the waste heat from the cooling process, and simultaneously plays the role of screening and conveying the material.The grate cooler breaker is the "throat" of the grate cooler, and its normal operation is directly related to the normal operation of the whole production line, and the heating of the rotor bearing of the grate cooler breaker reduces the service life of the bearing, and especially causes the heating deformation of the main shaft.

[0021] The current breaking tooth generally comprises a power assembly 1, a coal breaking roller, a rack and the like,

[0022] The utility model discloses to the above technical problem, the fixed end and the movable end of the rotor bearing seat of the grate cooler breaker are improved, and the specific structure is combined with the Figure 1 、 Figure 2 and Figure 3 Specifically described in detail.

[0023] A kind of coal block breaker for breaking tooth with high block ratio, including coal breaking roller body 3, coal breaking roller body is installed in coal breaking machine rack, both ends are supported on rack by bearing seat, one end is connected with power assembly 1, rely on power assembly to carry out rotation.It is generally installed two coal breaking rollers in coal breaking machine, the rotating direction of two coal breaking rollers is opposite, rely on the breaking tooth on coal breaking roller and carry out extrusion, splitting etc. to break large coal block.Crushing tooth 2 is arranged on coal breaking roller body 3, the coal breaking roller body is made of a plurality of tooth roller units 4 and is successively installed on the main shaft of screening machine, and the tooth roller unit is disc-shaped, the crushing tooth 2 is circular truncated cone, and all the circular truncated cone crushing teeth are curved in the same direction along the circumference of the coal breaking roller body.The utility model is improved to the tooth shape structure of breaking tooth, reduces over-crushing, and improves the block ratio of lump coal.The curved circular truncated cone of the utility model is thick at the root and thin at the top, like Figure 4As shown, when the crushing teeth on the two coal breaking roller bodies extrude the large coal block, the special arc surface design can make the coal block receive more uniform extrusion force in the crushing process, and reduce the local over-crushing condition. At the same time, the tooth shape structure has avoidance left and right to the small pieces, reduces the re-crushing of small coal blocks, reduces over-crushing, and reduces the fine powder rate. In the crushing process, when the coal block enters the inside of the crusher and contacts the crushing tooth, due to the curved frustum structure of the crushing tooth, the arc surface contacts the coal block, the coal block is first subjected to extrusion force from three arc surfaces, the internal cracks of the coal block are generated and gradually expanded. With the rotation of the rotating shaft of the crusher, the crushing tooth continuously extrudes and grinds the coal block, and finally the coal block is crushed into larger blocks along the pre-formed cracks. Compared with the traditional tooth shape structure, the tooth shape structure of the present application can better control the size and direction of the crushing force, and effectively improve the proportion of the blocky coal after crushing.

[0024] At present, the traditional coal breaking roller structure is designed into a long strip tooth roller skin along the width direction of the crusher according to the width size of the crusher, and one tooth roller is composed of six roller skins combined into a cylinder. The utility model improves that the coal breaking roller is changed into a split type, which is composed of a plurality of tooth roller units, that is, a plurality of discs are installed on the main shaft of the crusher to combine into a tooth roller, so that the production and processing cost of the tooth roller can be greatly reduced.

[0025] The tooth roller unit is key-connected with the main shaft of the crusher. That is, each tooth roller unit can be firmly installed on the main shaft of the crusher by using a fixed key, so as to enhance the stability of the tooth roller in the high-speed rotating crushing process.

[0026] The tooth roller unit is key-connected with the main shaft of the crusher. That is, each tooth roller unit can be firmly installed on the main shaft of the crusher by using a fixed key, so as to enhance the stability of the tooth roller in the high-speed rotating crushing process.

[0027] The tooth roller unit is key-connected with the main shaft of the crusher. That is, each tooth roller unit can be firmly installed on the main shaft of the crusher by using a fixed key, so as to enhance the stability of the tooth roller in the high-speed rotating crushing process. The preferred embodiments of the utility model are described above, and it should be pointed out that for those skilled in the art, without departing from the overall concept of the utility model, some changes and improvements can be made, which should be regarded as the protection range of the utility model.

Claims

1. A crushing tooth for a lump coal breaker with high lump ratio, comprising a coal breaking roller body (3), a crushing tooth (2) is arranged on the coal breaking roller body (3), characterized in that: The coal breaking roller body is composed of a plurality of tooth roller units (4) which are sequentially sleeved on a screening machine main shaft, the tooth roller unit is disc-shaped, and the breaking tooth (2) is frustoconical.

2. The high bulk density tooth for a lump breaker according to claim 1, characterized in that: The tooth roller unit is in key connection with the breaking machine main shaft.

3. The high bulk density tooth for a lump breaker according to claim 1, characterized in that: The tooth roller unit is disc-shaped, two circles of breaking teeth are arranged on the outer surface of the tooth roller unit, each circle of breaking teeth is the frustoconical breaking tooth with consistent bending direction, and is uniformly distributed, the breaking teeth of adjacent circles have the same bending direction and are arranged in a staggered mode.

Images