Hammerhead of ultrafine grinder

Abstract

The utility model relates to the technical field of crushers, in particular to an ultrafine crusher hammerhead which comprises a hammerhead body, a plurality of tooth-shaped structures are arranged on the surface, close to a gear ring, of the hammerhead body, and the ultrafine crusher hammerhead further comprises blades installed on the tooth-shaped structures. The shape of the blades is at least two, and the shapes of the blades installed on the adjacent tooth-shaped structures are different. According to the utility model, the blades with different shapes are arranged on the tooth-shaped structure of the near gear ring surface of the hammerhead body, so that the hammerhead can cover a wider crushing angle and can cover particle materials in various directions and angles in a gap between the near gear ring surface of the hammerhead and the gear ring, the probability of crushing the materials is increased, the materials are more easily crushed, and the crushing efficiency is improved. And secondary crushing of the materials is reduced, so that the crushing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of pulverizer technology, specifically to a hammerhead for an ultrafine pulverizer. Background Technology

[0002] The grinding chamber of an ultrafine pulverizer contains a toothed ring, a grinding disc, and other components. Several hammers are mounted on the circumference of the grinding disc near the toothed ring. One side of each hammer serves as a striking surface, allowing it to impact the material at high speed. The material is pulverized by the impact of the hammers on the grinding disc and then swirls at extremely high speed onto the surrounding toothed ring. Because the gap between the hammer's near-toothed surface and the toothed ring is very small, the airflow between them changes instantaneously due to the change in the tooth surface. The material is subjected to alternating stress within this gap, and under the repeated action of this force, it is further pulverized. Simultaneously, the high-speed airflow between the hammers and the toothed ring impacts the material, causing intense collisions and friction between the materials, thus achieving the purpose of fine pulverization.

[0003] Hammerheads are a crucial component of ultrafine pulverizers, primarily used for crushing materials. The pulverizer's efficiency is directly related to the size of the hammerheads. Commercially available hammerheads typically have two toothed structures near the tooth ring, each with a flat alloy surface, and a large, flat alloy surface on the impact surface. With increasing demand, the pulverizing efficiency of existing hammerheads is increasingly unable to meet production requirements. Utility Model Content

[0004] In view of this, the present invention provides a hammer for an ultrafine pulverizer, which aims to improve the pulverizing efficiency of the ultrafine pulverizer.

[0005] To solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0006] A hammerhead for an ultrafine pulverizer includes a hammerhead body with multiple toothed structures on the near-toothed ring surface of the hammerhead body, and also includes blades mounted on the toothed structures; the blades have at least two shapes, and the blades mounted on adjacent toothed structures have different shapes.

[0007] In some alternative embodiments, the blade includes a tip portion and a handle portion; the tip portion has multiple tips, and there is a gap between adjacent tips; the handle portion has multiple grooves and / or raised ridges arranged side by side.

[0008] In some alternative embodiments, the cross-section of the groove and / or the raised rib is tapered.

[0009] In some alternative implementations, the slits on the tips of the blades on adjacent toothed structures are staggered in the working direction.

[0010] In some alternative embodiments, the hammerhead body has five tooth-like structures on its near-tooth ring surface, with the first, third, and fifth tooth-like structures having blades of the same shape, and the second and fourth tooth-like structures having blades of a different shape.

[0011] In some alternative embodiments, the striking surface of the hammerhead body is conical.

[0012] In some alternative embodiments, a wear-resistant layer is installed on the striking surface of the hammer body.

[0013] In summary, compared with the prior art, this utility model has the following advantages and beneficial effects: By installing blades of different shapes on the toothed structure near the toothed ring surface of the hammer body, this utility model can cover a wider crushing angle and can cover particles of various angles within the gap between the hammer near the toothed ring surface and the toothed ring, increasing the probability of material being crushed, thus making it easier to crush the material, reducing secondary crushing of the material, and thereby improving crushing efficiency. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This is a front view structural diagram of the present invention.

[0016] Figure 3 This is a schematic diagram of the left-side structure of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the blade in this utility model.

[0018] The labels in the diagram are as follows: 1. Hammer head body; 2. Mounting hole; 3. Strike surface; 4. Wear-resistant layer; 5. Near tooth ring surface; 6. Tooth structure; 7. Blade; 71. Blade tip; 72. Gap; 73. Handle. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to specific embodiments.

[0020] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," "exceeding," etc. are understood to exclude the stated number, while "above," "below," "within," etc. are understood to include the stated number. If terms such as "first," "second," etc., are used only to distinguish technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of indicated technical features, or implicitly specifying the order of the indicated technical features.

[0022] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0023] like Figure 1 As shown in the embodiment of this application, an ultrafine pulverizer hammer head includes a hammer head body 1, which has mounting holes 2 for mounting onto a pulverizing disc.

[0024] The hammerhead body 1 has multiple tooth-like structures 6 on the near-tooth ring surface 5. These tooth-like structures 6 mainly work with the tooth ring to crush materials.

[0025] In order to improve the crushing efficiency of the hammer head, the embodiments of this application, such as Figure 1 and Figure 2 As shown, it also includes a blade 7. The blade 7 is mounted on the toothed structure 6. The blade 7 has at least two shapes, and the blades 7 mounted on adjacent toothed structures 6 have different shapes.

[0026] In this embodiment, blades 7 of different shapes are installed on the toothed structure 6 near the toothed ring surface 5 of the hammer body 1, so that it can cover a wider crushing angle and can cover particulate materials in all directions within the gap between the hammer near the toothed ring surface 5 and the toothed ring, increasing the probability of material being crushed, making it easier to crush the material, reducing secondary crushing of the material, and thus improving crushing efficiency.

[0027] As an optional implementation method, such as Figure 4 As shown, the blade 7 includes a tip portion 71 and a handle portion 73. The tip portion 71 has multiple blade tips, with gaps 72 between adjacent blade tips to allow particulate material to pass through. The handle portion 73 has multiple parallel grooves and / or raised ridges, which can form sharp angles for crushing materials. Preferably, the cross-section of these grooves and / or raised ridges is tapered to make the sharp angles even sharper.

[0028] The main difference between blades 7 of different shapes is the number of blade tips and the position of the slits 72. For example, some blades 7 have three blade tips and two slits 72, while others have four blade tips and three slits 72.

[0029] The blade 7 replaces the existing planar alloy on the toothed structure for crushing materials, and its installation method is the same as that of the existing planar alloy. The blade 7 can still be made of alloy materials, such as tungsten-cobalt alloys, high-chromium alloys, etc. When the particles in the gap between the hammer near the toothed ring surface 5 and the toothed ring impact the blade 7, some particles collide with the blade tip and are crushed; another part of the particles pass through the gap 72 between the blade tips and maintain a high speed to impact the next blade 7, thus ensuring the impact force. Therefore, if... Figure 3 As shown, it is also possible to design the gaps 72 on the blade tip 71 of the adjacent toothed structure 6 to be staggered in the working direction, so as to ensure that each particle flying towards the blade 7 can be powerfully impacted by the blade 7; some particles will also collide with and be broken by the sharp corners formed by the grooves and / or protruding ridges on the handle 73. Due to the position and angle relationship, the sharp corners of the handle 73 do not need to be provided with gaps.

[0030] Compared to existing planar alloys, the blade 7 used in this embodiment has a sharper tip and angle, making it easier to break particulate materials into smaller particles upon impact, thereby improving the crushing effect, reducing secondary crushing, and ultimately increasing crushing efficiency. Combinations of blades 7 of various shapes can cover a wider crushing angle, encompassing particulate materials at various angles within the gap between the hammerhead near the toothed ring surface 5 and the toothed ring, increasing the probability of material crushing, making it easier to break down materials, reducing secondary crushing, and thus improving crushing efficiency.

[0031] As described in the background art, commercially available hammerheads typically have only two toothed structures on their near-toothed ring surface. To further improve crushing efficiency, as an optional implementation, in this embodiment, the hammerhead body 1 has five toothed structures 6 on its near-toothed ring surface 5. The first, third, and fifth toothed structures 6 are fitted with blades 7 of the same shape, for example, blades 7 with three tips and two slits 72. The second and fourth toothed structures 6 are fitted with blades 7 of a different shape, for example, blades 7 with four tips and three slits 72. The different shapes of the blades 7 mounted on adjacent toothed structures 6 allow the hammerhead's near-toothed ring surface 5 to cover particles from more directions and angles, increasing the probability of material crushing, making it easier to break down the material, reducing secondary crushing, and thus improving crushing efficiency. To reduce the wind resistance caused by the increased length due to the added toothed structures 6, it is also possible to simultaneously reduce the height of the hammerhead, thereby reducing wind resistance.

[0032] The impact surface of a traditional hammerhead is generally flat and is set along the radial direction of the crushing disc. When the crushing disc rotates at high speed, the impact surface strikes the material at high speed, making it difficult to effectively disperse the material. This makes it difficult to distribute the material evenly in the crushing chamber, limiting the crushing effect, failing to meet the required fineness, and reducing production efficiency.

[0033] Therefore, as Figure 1 and Figure 2 As shown in the embodiment of this application, the striking surface 3 of the hammer body 1 is also considered to be improved into a conical shape. While the material is being crushed by the striking surface 3, the crushed material can be dispersed from both sides of the conical striking surface 3. Material on one side is thrown towards the toothed ring, resulting in efficient fine crushing, while material on the other side is thrown towards the inner side of the crushing disc. Under the action of centrifugal force, the material thrown towards the inner side of the crushing disc is thrown back towards the hammer, thereby further crushing the material at high speed, improving the crushing effect, changing the distribution of material in the crushing chamber, improving the uniformity of material distribution, and improving the fine crushing effect, thus improving the crushing efficiency. Improving the striking surface 3 of the hammer body 1 into a conical shape not only facilitates the segmentation of material layers but also reduces the wind-blocking area, which helps reduce wind resistance and thus reduce power consumption.

[0034] A wear-resistant layer 4 made of alloy materials such as tungsten-cobalt alloys and high-chromium alloys can also be added to the impact surface 3. The wear-resistant layer 4 can improve the impact resistance and wear resistance of the hammer impact surface 3, effectively protect the hammer body 1 from damage, and can be easily replaced after the wear-resistant layer 4 wears out, extending the service life of the hammer body 1, reducing the time wasted due to replacing damaged hammers, thereby increasing working time and thus improving crushing efficiency.

[0035] By employing the hammerhead described in the embodiments of this application, the ultrafine pulverizer increases the probability of material pulverization, enhances pulverization force, and improves pulverization efficiency. Comparative testing under the same operating conditions shows a nearly 15% increase in output, a significant improvement, while also saving approximately 10% in electricity consumption. This not only reduces the load on the power grid but also minimizes unnecessary expenses and increases profits.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The above preferred embodiments should not be considered as limitations on this utility model, and the scope of protection of this utility model should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An ultrafine pulverizer hammer head comprising a hammer head body (1), a plurality of tooth-like structures (6) are arranged on the near-tooth circle surface (5) of the hammer head body (1), characterized in that: The tool also comprises blades (7) mounted on the toothed structure (6); the blades (7) have at least two shapes, and the blades (7) mounted on adjacent toothed structures (6) have different shapes.

2. A hammer head for an ultrafine grinder as claimed in claim 1, characterized in that: The blades (7) comprise blade tips (71) and blade handles (73); the blade tips (71) have a plurality of blade tips, and the blade tips are separated by gaps (72); the blade handles (73) have a plurality of parallel grooves and / or raised ridges.

3. A hammer head for an attritor mill as defined in claim 2, wherein: The cross section of the grooves and / or raised ridges is tapered.

4. The super-micronizer hammer head of claim 2, wherein: The gaps (72) on the blade tips (71) of the blades (7) mounted on adjacent toothed structures (6) are staggered in the working direction.

5. The hammerhead for an ultrafine pulverizer as described in claim 1, characterized in that: The proximal toothed ring surface (5) of the hammer head body (1) is provided with five toothed structures (6), and the first, third and fifth toothed structures (6) are provided with blades (7) of the same shape, and the second and fourth toothed structures (6) are provided with blades (7) of another shape.

6. The super-micronizer hammer head of claim 1 wherein: The striking surface (3) of the hammer head body (1) is tapered.

7. An ultrafine grinder hammer head as claimed in claim 6, characterized in that: The striking surface (3) of the hammer head body (1) is provided with a wear-resistant layer (4).

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