Variable cutter head for a shredder

Abstract

The utility model discloses a variable tool bit of pulverizer relates to the field of pulverizer pulverizing knife, including the cutter head, the pulverizing knife is even installed at the edge of cutter head in the mode of rotation, and the pulverizing knife can rotate on the cutter head, and the included angle between the cutter head is adjusted, and the protruding length of the pulverizing knife on the cutter head is changed, the fixed part is connected with the cutter head and the pulverizing knife, and is used for fixing the pulverizing knife. The utility model discloses the pulverizing knife is installed on the cutter head in the mode of rotation, and the included angle between the cutter head can be adjusted to the pulverizing knife, thereby adjusting the length of the protruding of the pulverizing knife on the cutter head, the distance between the pulverizing knife and the pulverizing cavity lateral wall or the pulverizer tooth disc is changed, and the protruding length of the pulverizing knife can be adjusted according to the size of the material particle diameter of pulverization, and the pulverization efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of crusher blades, and in particular to a variable blade head for a crusher. Background Technology

[0002] The crushing blades are mounted on the cutter disc, and the inner wall of the crushing chamber of the crusher is provided with a ring of teeth. There is a certain distance between the crushing blades and the crushing teeth. When crushing materials, the materials enter the crushing chamber, and when the crushing blades rotate, they can crush the materials located between the crushing teeth and the crushing blades. In addition, a filter screen is provided on the outer periphery of the crushing chamber. Materials smaller than the filter screen fall directly through the filter screen, while larger particles are blocked by the filter screen in the crushing chamber and continue to be crushed, thus completing the crushing of the materials.

[0003] In principle, the greater the distance between the crushing blade and the annular crushing teeth, the larger the diameter of the crushed particles. When crushing materials of different sizes, since the distance between the crushing blade and the annular teeth is not adjustable, the extension distance of the crushing blade cannot be changed, and the degree of crushing of the material is basically consistent. For smaller diameter particles, the crushing time is longer. In other words, the smaller the particles of the material, the lower the efficiency. Summary of the Invention

[0004] The main objective of this invention is to provide a variable blade for a crusher, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A variable cutter head for a shredder, comprising: Cutter head; The shredder blades are evenly mounted on the edge of the blade disc in a rotating manner. The shredder blades can rotate on the blade disc to adjust the angle between them and the blade disc, thereby changing the extension length of the shredder blades on the blade disc. The fixing part connects the blade disc and the pulverizing blade, and is used to fix the pulverizing blade.

[0006] Preferably, one end of the shredder is bolted to the edge of the blade disc.

[0007] Preferably, the fixing part includes a waist-shaped groove and a fixing bolt, wherein the waist-shaped groove is centered on the axis of the bolt; Bolt holes are provided on the shredder blade, and fixing bolts are used to fix the shredder blade.

[0008] Preferably, an axially arranged support column is fixedly installed at the edge of the cutter head, and a connecting block is rotatably installed at the end of the support column. A waist-shaped groove is opened at the end where the support column and the connecting block are connected, and a fixing bolt is installed in the waist-shaped groove. The other end of the connecting block is rotatably equipped with a crushing blade. The end where the connecting block and the crushing blade are connected is provided with a first waist-shaped groove, and a fixing bolt is also installed in the first waist-shaped groove.

[0009] Preferably, the waist-shaped grooves of the support column and the connecting block are on the same circular surface and have the same curvature.

[0010] Preferably, a mounting hole is provided at the center of the cutter disc for connecting to the drive shaft of the crusher.

[0011] Preferably, the tilt direction of the shredder is opposite to the rotation direction of the blade disc.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The pulverizing blade of this invention is mounted on the blade disc in a rotating manner. The angle between the pulverizing blade and the blade disc can be adjusted, thereby adjusting the length of the pulverizing blade extending from the blade disc and changing the distance between the pulverizing blade and the side wall of the pulverizing chamber or the toothed disc of the pulverizer. The extension length of the pulverizing blade can be adjusted according to the size of the particle diameter of the material to be pulverized, thereby improving the pulverizing efficiency. Attached Figure Description

[0013] Figure 1 This is a front view of Embodiment 1 of the present utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle; Figure 3 This is a front view of the cutter head in Embodiment 1 of this utility model; Figure 4 This is a structural diagram of the cutter head in Embodiment 1 of this utility model; Figure 5 This is a top view of Embodiment 2 of the present invention; Figure 6 This is a structural diagram of the cutter disc and crushing blade in Embodiment 2 of this utility model; Figure 7 This is a structural diagram of the shredder blade of this utility model; Figure 8 This is a structural diagram of the connecting block and the crushing blade of this utility model; Figure 9 This is a motion state diagram of Embodiment 1 of this utility model.

[0014] In the diagram: 1. Cutter head; 2. Crushing blade; 3. Waist-shaped groove; 4. Fixing bolt; 5. Connecting block; 6. First waist-shaped groove; 7. Support column. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. Example

[0016] Please see Figure 1-4 As shown, this embodiment provides a variable cutter head for a crusher, including: The cutter disc 1 has a fixing hole. Preferably, the fixing hole is located at the center of the cutter disc. The drive shaft of the crusher can be inserted into the fixing hole and can be connected to the drive shaft by bolts / nuts or by welding, thereby installing the cutter disc 1 and the crusher together.

[0017] The shredder 2 is evenly arranged along the edge of the blade disc 1, specifically as follows: Figure 1 As shown, the pulverizing blade 2 is mounted on the blade disc 1 in a rotatable manner. The pulverizing blade 2 can rotate on the blade disc 1, and the angle between the pulverizing blade 2 and the blade disc 1 can be adjusted to change the extension length of the pulverizing blade 2 on the blade disc 1.

[0018] Specifically, the edge of the cutter disc 1 is provided with evenly distributed mounting holes, and one end of the crushing blade 2 is also provided with a mounting hole. Bolts are inserted into the mounting holes of the cutter disc 1 and the mounting holes of the crushing blade 2, and the nuts are tightened to install the crushing blade 2 on the cutter disc 1.

[0019] The fixing part includes a waist-shaped groove 3 and a fixing bolt 4. The waist-shaped groove 3 is centered on the axis of the bolt. The crushing blade 2 has a bolt hole. The fixing bolt 4 is inserted into the bolt hole and the waist-shaped groove 3. Tightening the nut of the fixing bolt 4 can fix the crushing blade 2.

[0020] In this embodiment, the solution refers to a disc crusher, hammer crusher, or toothed disc crusher.

[0021] The hammer mill is equipped with multiple cutter discs 1, all of which are evenly fixed on a rotating shaft, which is then fixedly connected to the mill's drive shaft. During installation, the rotating shaft passes through the fixing holes and is welded to the cutter discs 1. Because the hammer mill has multiple cutter discs 1, the thickness of the cutter discs 1 and the crushing blades 2 should not be too thick; the specific thickness can be designed according to actual application.

[0022] When used in a disc crusher, the disc crusher is generally equipped with only one cutter disc. Therefore, the cutter disc is relatively thick, and the crushing blade 2 is relatively thick. The overall thickness of the crushing blade 2 and the cutter disc is the same as the thickness of the crushing chamber (or slightly less than the thickness of the crushing chamber).

[0023] When it is necessary to adjust the extension length of the crusher blade 2, first loosen the bolts in the mounting hole and the fixing bolts 4, and then rotate the crusher blade 2. The crusher blade 2 rotates around the bolts in the mounting hole, thereby adjusting the extension length of the crusher blade 2.

[0024] After the position of the crusher blade 2 is adjusted, tighten the bolts in the mounting holes and the fixing bolts 4 to double-fix the crusher blade 2 (one at one end of the crusher blade 2, and the other at the fixing hole and the waist-shaped hole). This ensures the stability of the crusher blade 2 and prevents it from moving during operation.

[0025] In this embodiment, a toothed disc crusher is used as an example: the crushing blades are installed on the disc, and a ring of teeth is provided on the inner side wall of the crushing chamber. There is a certain distance between the crushing blades and the crushing teeth. When crushing materials, the materials enter the crushing chamber. When the crushing blades rotate, they can crush the materials located between the crushing teeth and the crushing blades. Moreover, a filter screen is provided on the outer periphery of the crushing chamber. Materials with particles smaller than the filter screen fall directly through the filter screen. Particles with larger diameters are blocked by the filter screen in the crushing chamber and continue to be crushed until all the materials are crushed and discharged from the filter screen, thus completing the crushing of the materials.

[0026] When crushing materials of different sizes, because the distance between the crushing blade and the ring teeth is not adjustable, the extension distance of the crushing blade cannot be changed, resulting in a relatively consistent degree of crushing. For smaller diameter particles, a longer crushing time is required. Furthermore, the fixed distance between the crushing blade and the ring teeth leads to a longer crushing time; in other words, the smaller the particle size, the lower the efficiency. Incomplete crushing can also occur, especially as material is discharged from the filter screen, leaving less material in the crushing chamber. This reduces the abrasive pressure between the materials, making them more difficult to crush and resulting in a longer crushing time.

[0027] In this embodiment, the extension length of the crushing blade 2 on the cutter disc 1 can be adjusted for particles of different sizes. When the diameter of the material to be crushed is relatively large, the crushing blade 2 can be adjusted so that the extension of the crushing blade 2 is less, increasing the distance between the crushing blade 2 and the toothed ring. When the material is crushed, the compression space between the crushing blade 2 and the toothed ring is larger, and under the cutting action of the crushing blade 2 and the toothed ring, the material particles are relatively large.

[0028] When the diameter of the material to be crushed is relatively small, the crushing blade 2 can be adjusted so that the crushing blade 2 extends further, reducing the distance between the crushing blade 2 and the toothed ring. When the material is crushed, the compression space between the crushing blade 2 and the toothed ring is smaller. Under the cutting action of the crushing blade 2 and the toothed ring, the material particles are relatively small, resulting in higher crushing efficiency for small particle diameters.

[0029] For toothed disc crushers, such as Figure 9 As shown (the arrow in the figure indicates the direction of movement of the cutter head), the inclination direction of the crushing blade 2 is opposite to the rotation direction of the cutter head 1. That is to say, along the rotation direction of the crushing blade 2, the angle between the crushing blade 2 and the toothed ring is an acute angle. Compared with the existing method of setting the crushing blade perpendicular to the rotation direction (when the crushing blade is set perpendicularly, although some materials will be crushed, the vertical collision between the crushing blade and the material results in low crushing efficiency and basically does not guide the material into the gap between the crushing blade and the toothed ring, but the crushing of materials mainly relies on the compression between the crushing blade and the toothed ring), when the crushing blade 2 rotates, the material will enter between the crushing blade and the toothed ring along the inclined crushing blade, ensuring that more material is located between the crushing blade and the toothed ring, thus improving the crushing efficiency. Example

[0030] like Figures 5-8 As shown, the difference from Example 1 is that: Multiple evenly distributed support columns 7 are fixedly installed at the edge of the cutter head 1. The support columns 7 are arranged along the axial direction of the cutter head 1, as shown in the figure below. Figure 5 As shown, the support column 7 has a mounting hole away from the cutter head 1. The mounting hole is used to install the connecting block 5 on the bolt and nut. The end of the support column 7 and the connecting block 5 connected, as well as the end of the connecting block 5, are provided with a waist-shaped groove 3. The waist-shaped groove 3 is installed with a fixing bolt 4, which is used to fix the connecting block 5.

[0031] like Figures 6-8 As shown, the other end of the connecting block 5 is also provided with an installation hole, in which a crushing blade 2 is installed by bolts. The end of the connecting block 5 and the crushing blade 2 that are connected, as well as the other end of the connecting block 5, are provided with a first waist-shaped groove 6. Fixing bolts 4 are also installed in the first waist-shaped grooves 6 of both. When the fixing bolts 4 and the bolts in the installation hole are tightened, the connecting block 5 and / or the crushing blade 2 can be double-fixed, which can ensure the stability of the installation of the crushing blade 2 and the connecting block 5.

[0032] In this embodiment, the waist-shaped groove 3 of the support column 7 and the waist-shaped groove 3 at one end of the connecting block 5 are on the same circular surface and have the same curvature. The waist-shaped groove 3 at the other end of the connecting block 5 and the waist-shaped groove 3 of the crusher 2 are on the same circular surface and have the same curvature.

[0033] Since the teeth of the toothed disc crusher's toothed ring are vertical, a connecting block 5 is installed on the axially positioned support column 7. The crushing blade 2 is mounted on the connecting block 5, forming an N-shaped structure with the support column 7, crushing blade 2, and connecting block 5. The crushing blade 2 can be adjusted on the connecting block 5 and always kept in a vertical position, while the outward extension distance of the crushing blade 2 is adjusted by the connecting block 5. When the connecting block 5 rotates outward, increasing the angle between it and the support column 7, the crushing blade 2 moves outward; when the connecting block 5 rotates inward, decreasing the angle between it and the support column 7, the crushing blade 2 moves inward.

[0034] It should be noted that the height of the connecting block 5 is slightly less than the height of the support column 7. When adjusting the angle of the connecting block 5, ensure that the bottom of the connecting block 5 does not contact the cutter head 1 to avoid the connecting block 5 touching the cutter head 1 when rotating.

[0035] Similarly, the height of the crushing blade 2 is less than the height of the connecting block 5. It is necessary to ensure that when the crushing blade 5 rotates to its maximum angle on the support column 7, and when the crushing blade 2 is in a vertical position on the connecting block 5, the top of the crushing blade 2 does not exceed the top of the support column 7.

[0036] When adjusting the crusher blade 2, first loosen the bolts of the support column 7 and connecting block 5, as well as the fixing bolt 4, to adjust the angle of the connecting block 5. After the adjustment is completed, tighten the bolts and fixing bolt 4 to double fix the support column 7 and connecting block 5. The position of the far end of the connecting block 5 changes, thereby adjusting the position of the crusher blade 2. Then loosen the bolts of the connecting block 5 and the crusher blade, as well as the fixing bolt 4, and adjust the angle of the crusher blade 2 so that the crusher blade 2 is as vertical as possible. This can be visually inspected; it is sufficient to keep it basically horizontal.

[0037] In this application, the main purpose of providing waist-shaped grooves 3 on the crusher blade 2, connecting block 5, and support column 7 is to ensure the overall installation strength of the blade while ensuring sufficient rotation space. If the waist-shaped groove 3 is too large, the area where the waist-shaped groove 3 is located will be relatively weak, which may easily lead to breakage. By providing waist-shaped grooves 3 on the crusher blade 2, connecting block 5, and support column 7, the waist-shaped grooves 3 can be made relatively small, ensuring strength while also allowing the crusher blade 2 sufficient adjustment space.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from its spirit and scope. All such changes and modifications fall within the scope of protection of this utility model as defined by the appended claims and their equivalents.

Claims

1. A variable cutter head for a pulverizer, characterized in that, include: Cutter head (1); The crushing blade (2) is evenly installed on the edge of the blade disc (1) in a rotating manner. The crushing blade (2) can rotate on the blade disc (1) to adjust the angle between it and the blade disc (1) and change the extension length of the crushing blade on the blade disc (1). The fixing part connects the blade disc (1) and the crushing blade (2) and is used to fix the crushing blade (2).

2. The variable cutter head of a pulverizer according to claim 1, characterized in that, One end of the crushing blade (2) is bolted to the edge of the blade disc (1).

3. The variable cutter head of a pulverizer according to claim 2, characterized in that, The fixing part includes a waist-shaped groove (3) and a fixing bolt (4), wherein the waist-shaped groove (3) is centered on the axis of the bolt; Bolt holes are provided on the pulverizer (2), and the fixing bolts are used to fix the pulverizer.

4. The variable cutter head of a pulverizer according to claim 1, characterized in that, A support column (7) is fixedly installed on the edge of the cutter head (1) and a connecting block (5) is rotatably installed at the end of the support column (7). A waist-shaped groove (3) is opened at one end of the support column (7) and the connecting block (5), and a fixing bolt (4) is installed in the waist-shaped groove (3). The other end of the connecting block (5) is rotatably mounted with a crushing blade (2). The end where the connecting block (5) and the crushing blade (2) are connected is provided with a first waist-shaped groove (6). A fixing bolt (4) is also installed in the first waist-shaped groove (6).

5. The variable cutter head of a pulverizer according to claim 4, characterized in that, The waist-shaped groove (3) of the support column (7) and the connecting block (5) are on the same circular surface and have the same curvature.

6. The variable cutter head of a pulverizer according to claim 1, characterized in that: The cutter head (1) has a mounting hole at its center for connecting to the drive shaft of the crusher.

7. The variable cutter head of a pulverizer according to claim 1, characterized in that: The tilting direction of the crusher (2) is opposite to the rotation direction of the blade disc (1).

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