Impact crusher

Abstract

The utility model provides an impact crusher which is characterized in that a rotor is arranged in a rack, a plate hammer assembly is arranged on the rotor, a plurality of impact frame assemblies are arranged at the top of the rack from top to bottom, a working area where the plate hammer assembly and the impact frame assemblies are matched for crushing is a crushing arc area, and finished products are discharged from a discharge port below through the crushing arc area. The device is characterized in that a feeding port is formed in the upper portion of the rack, a feeding hopper is arranged below the feeding port, the feeding hopper comprises an arc-shaped bottom plate with the radius being R, a material throwing frame is detachably fixed to the tail end, used for conveying materials, of the feeding hopper and fixed to a supporting frame, the supporting frame is fixedly connected with the feeding hopper and the material throwing frame, and an arc-shaped material throwing plate is arranged at the upper end of the material throwing frame; the arc-shaped material throwing plate and the arc-shaped bottom plate are installed in an arc-shaped smooth transition mode. The utility model provides an impact crusher which is simple in structure, wear-resistant and easy to maintain and replace.

Description

Technical Field

[0001] The utility model relates to mining crushing equipment, in particular to an impact crusher. Background Art

[0002] As a crusher that uses the impact principle to crush materials, the impact crusher has the characteristics of large crushing ratio, simple structure, wide application range, and competitive finished product particle shape. In the field of soft rock mining, it is the best equipment for preparing high-grade coarse aggregate and is widely used in mining, chemical, construction, railway and other industries.

[0003] Since the impact crusher has a relatively large crushing capacity and is limited by its working principle, the gradation of the finished product is relatively fixed, and the proportion of materials in a certain particle size range in the finished product is also relatively fixed. However, different particle size ranges have different customer needs. For example, materials with a particle size of 40 to 80 mm are in great demand in cement plants, coal, steel and other fields, while the proportion of materials in this range is usually around 25%-30%, which is relatively low, and existing equipment is difficult to meet customer needs.

[0004] The invention patent that has been disclosed, "An impact crusher with adjustable discharge gradation" (patent application number CN202211445531.2), has the function of adjusting the crushing ratio within a certain range, and can increase the proportion of materials in a certain interval. Its working principle is to use external screening equipment to screen and return materials, and to adjust a certain particle size range in the full particle size interval by controlling the particle size of the returned materials. However, the adjustment range of the crushing ratio is limited, and the equipment cost is high. For special materials such as 40-80mm, the increase is relatively small. At the same time, the invention patent does not describe the feed hopper in detail. Normally, the lower bottom plate of the feed hopper is a flat steel plate. When the material passes through the feed hopper to the arc throwing plate, there is a certain angle difference, which affects the falling speed of the material. At the same time, due to the sudden change in flow direction, the throwing plate wears faster and the throwing angle is also affected. Utility Model Content

[0005] In view of the above problems, the utility model is proposed to provide an impact crusher that overcomes the above problems or at least partially solves the above problems, which can meet the demand for crushing materials with low crushing ratios, and achieve an impact crusher with the characteristics of good particle shape, high crushing efficiency and low cost while achieving a low crushing ratio.

[0006] Specifically, the utility model provides an impact crusher, in which a rotor is arranged in a frame, a plate hammer assembly is arranged on the rotor, and a plurality of impact frame assemblies are arranged on the top of the frame from top to bottom. The working area where the plate hammer assembly and the impact frame assembly cooperate in crushing is a crushing arc area, and the finished materials are discharged from a discharge port below after passing through the crushing arc area. The utility model is characterized in that: a feeding port is arranged above the frame, a feeding hopper is arranged below the feeding port, the feeding hopper comprises an arc-shaped bottom plate with a radius of R, a throwing frame is detachably fixed at the end of the feed hopper for conveying materials, the throwing frame is fixed on a supporting frame, the supporting frame is connected and fixed to the feed hopper and the throwing frame, an arc-shaped throwing plate is arranged on the upper end of the throwing frame, and the arc-shaped throwing plate and the arc-shaped bottom plate are installed in an arc-shaped smooth transition.

[0007] Optionally, the curvature of the arc-shaped throwing plate is consistent with the curvature of the bottom plate.

[0008] Optionally, the arc-shaped bottom plate and the arc-shaped throwing plate are formed by bending wear-resistant steel plates.

[0009] Optionally, the arc-shaped material throwing plate can be detachably fixed on the material throwing frame.

[0010] Optionally, the horizontal distance between the end of the arc-shaped ejector plate in the material conveying direction and the center of the rotor is L, and the vertical height difference is H. By increasing the length of the arc-shaped ejector plate, thereby reducing L and increasing H, a lower crushing ratio can be obtained.

[0011] In the impact crusher of the utility model, since an arc-shaped feed hopper is arranged at the lower end of the feed hopper and an arc-shaped throwing frame is arranged correspondingly, the material is thrown into the rotor fan-shaped crushing area far away from the feed inlet under the action of the feed hopper and the arc-shaped throwing frame, the crushing times are reduced, the crushing ratio is reduced, the service life of the arc throwing plate is extended, and the application range of the equipment is improved.

[0012] Based on the detailed description of the specific embodiments of the present invention in combination with the accompanying drawings below, those skilled in the art will become more aware of the above and other purposes, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0014] Figure 1 It is an overall schematic structural diagram according to an embodiment of the utility model; DETAILED DESCRIPTION

[0015] Refer to the following Figure 1To describe the impact crusher of the embodiment of the utility model. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0016] Unless otherwise clearly specified and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. A person of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present utility model according to the specific circumstances.

[0017] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0018] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0019] Figure 1 It is an overall schematic structural diagram of an embodiment of the utility model, such as Figure 1As shown, and with reference to the embodiment of the utility model, an impact crusher is provided, including a frame 1, a rotor 4 is arranged in the frame 1, a plate hammer assembly is arranged on the rotor 4, a first impact frame 2 and a second impact frame 3 are arranged on the top of the frame from top to bottom, the working area where the plate hammer assembly and the impact frame assembly cooperate in crushing is a crushing arc area, and the finished material is discharged from the lower discharge port after passing through the crushing arc area, a feed inlet 7 is arranged above the frame 1, and the feed inlet 7 is a semi-open area surrounded by the frame 1 and the feed hopper 9, and an arc-shaped bottom plate 8 with a radius of R is arranged above the feed hopper 9, which is used to guide the material to the crushing arc area, and a throwing frame 5 is fixed at the end of the feed hopper along the feeding direction, and an arc throwing plate 6 is fixed at the upper end of the throwing frame 5, and the curvature of the arc throwing plate 6 is the same as that of the arc-shaped bottom plate 8, and the arc-shaped bottom plate 8 and the arc throwing plate 6 are bent by wear-resistant steel plates, and the bending radius is R. The arc-shaped bottom plate 8 and the arc-shaped throwing plate 6 are installed with a smooth transition, so that the material does not lose speed during the falling process and also reduces wear.

[0020] like Figure 1 As shown in the figure, the horizontal distance between the end of the arc throwing plate 6 and the center of the rotor 4 is L, and the height difference in the vertical direction is H. According to the working principle of the impact crusher, the deeper the material falls, the smaller the fan-shaped crushing area is, the fewer the crushing times are, and the lower the crushing ratio is, that is, the smaller L is and the larger H is, the deeper the material falls and the lower the crushing ratio is.

[0021] The embodiment of the utility model extends the travel of the material at the feed port by using the arc-shaped bottom plate 8 and the arc-shaped throwing plate 6, so that the landing point of the material becomes deeper. At the same time, the arc-shaped bottom plate 8 and the arc-shaped throwing plate 6 are bent from wear-resistant steel, which have the advantages of low cost, wear resistance, simple structure, and easy maintenance and replacement.

[0022] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived from the contents disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An impact crusher, comprising a frame, a rotor arranged in the frame, a plate hammer assembly arranged on the rotor, a plurality of impact frame assemblies arranged from top to bottom on the top of the frame, the plate hammer assembly and the impact frame assembly cooperate in crushing the working area of ​​the crushing arc area, and the finished material is discharged from the lower discharge port after passing through the crushing arc area, characterized in that: A feed port is arranged above the frame, and a feed hopper is arranged below the feed port. The feed hopper includes an arc-shaped bottom plate with a radius of R. A throwing rack is detachably fixed at the end of the feed hopper for conveying materials. The throwing rack is fixed on a supporting frame. The supporting frame connects and fixes the feed hopper and the throwing rack. An arc-shaped throwing plate is arranged on the upper end of the throwing rack. The arc-shaped throwing plate and the arc-shaped bottom plate are installed in an arc-shaped smooth transition.

2. The impact crusher according to claim 1, characterized in that: The curvature of the circular arc-shaped throwing plate is consistent with the curvature of the bottom plate.

3. The impact crusher according to claim 1 or 2, characterized in that: The arc-shaped bottom plate and the arc-shaped throwing plate are formed by bending wear-resistant steel plates.

4. The impact crusher according to claim 3, characterized in that: The arc-shaped material throwing plate is detachably fixed on the material throwing frame.

5. The impact crusher according to claim 4, characterized in that: The horizontal distance between the end of the arc-shaped ejector plate in the material conveying direction and the center of the rotor is L, and the height difference in the vertical direction is H. By increasing the length of the arc-shaped ejector plate, thereby reducing L and increasing H, a lower crushing ratio can be obtained.

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