Plastic grinding machine grinding disc

Abstract

The utility model provides a grinding disc for a plastic grinding mill, which solves the problem that the existing grinding disc cannot guarantee the grinding accuracy. It also includes a No. 1 grinding tooth, which is arranged near the feed hole; a No. 2 grinding tooth, which is arranged on the outside of the No. 1 grinding tooth; the No. 3 grinding tooth is arranged in a divergent and inclined manner, and the tooth surface of the No. 3 grinding tooth is offset from the center of the disc body by 82-88mm; the No. 3 grinding tooth is arranged on the outside of the No. 2 grinding tooth; the tooth pitch between the No. 1 grinding teeth, the tooth pitch between the No. 2 grinding teeth, and the tooth pitch between the No. 3 grinding teeth are successively reduced. During the grinding process of the grinding disc, since the tooth pitch between the No. 1 grinding teeth, the tooth pitch between the No. 2 grinding teeth, and the tooth pitch between the No. 3 grinding teeth are successively reduced, the material is ground step by step. Since the No. 3 grinding teeth are arranged in a divergent and inclined manner and have an offset from the center of the disc body, the powder can stay on the No. 3 grinding teeth for a longer time, thereby improving the fineness and uniformity of the powder.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding mills, in particular to a grinding disc of a plastic grinding mill. Background Art

[0002] The grinding mill is widely used in the grinding of materials in the fields of metallurgy, building materials, chemical industry, mining, etc. The grinding mill is provided with a grinding disc with a fixing hole, a feed hole in the center of the grinding disc, and an annular grinding tooth for cutting the material and grinding the material into powder with a smaller particle size. At present, the existing grinding disc has only one circle of annular grinding teeth, the pitch of the grinding teeth is small at the feed hole and large at the edge, resulting in a coarse grinding material and the grinding accuracy cannot be guaranteed. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a plastic grinding mill grinding disc, which solves the problem that the existing grinding disc cannot ensure the grinding accuracy.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The grinding disc of a plastic grinding mill comprises a disc body, wherein the disc body is provided with a feeding hole and a fixing hole, and further comprises:

[0006] The first grinding tooth is arranged near the feed hole;

[0007] A second grinding tooth is arranged outside the first grinding tooth;

[0008] The third grinding tooth is arranged outside the second grinding tooth, and the third grinding tooth is arranged in a divergent and inclined manner, and the tooth surface of the third grinding tooth is offset from the center of the disc body by 82-88mm;

[0009] The tooth pitch between the first grinding teeth, the tooth pitch between the second grinding teeth, and the tooth pitch between the third grinding teeth become smaller in sequence.

[0010] An annular cooling groove is arranged on the back side of the disk.

[0011] Sealing grooves are provided at both the front and rear ends of the annular cooling groove.

[0012] The disc body includes a No. 1 disc body and a No. 2 disc body, the No. 1 grinding teeth and the No. 2 grinding teeth are arranged on the No. 1 disc body, and the No. 3 grinding teeth are arranged on the No. 2 disc body.

[0013] The first grinding tooth is the longest, and a transition channel is provided between the first grinding tooth and the second grinding tooth.

[0014] The material of the disc body is high carbon chromium bearing steel.

[0015] The beneficial effects of the utility model are:

[0016] During the grinding process of the grinding disc, the pitch between the No. 1 grinding teeth, the pitch between the No. 2 grinding teeth, and the pitch between the No. 3 grinding teeth become smaller in sequence, and the material is ground step by step. Since the No. 3 grinding teeth are arranged in a divergent and inclined manner and offset from the center of the disc, the powder can stay on the No. 3 grinding teeth for a longer time, thereby improving the fineness and uniformity of the powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the utility model.

[0018] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0019] Figure 3 This utility model Figure 2 A magnified schematic diagram of center A.

[0020] Disc body 1, No. 1 disc body 11, No. 2 disc body 12, feed hole 2, fixing hole 3, No. 1 grinding tooth 4, No. 2 grinding tooth 5, No. 3 grinding tooth 6, annular cooling groove 7, sealing groove 8, and flow passage 9. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0022] In the embodiment, Figure 1 As shown, the grinding disc of the plastic grinding mill comprises a disc body 1, on which a feed hole 2 and a fixing hole 3 are provided, and further comprises:

[0023] A first grinding tooth 4 is arranged near the feed hole 2;

[0024] The second grinding tooth 5 is arranged on the outer side of the first grinding tooth 4;

[0025] The third grinding tooth 6 is arranged outside the second grinding tooth 5. The third grinding tooth 6 is arranged in a divergent and inclined manner. The tooth surface of the third grinding tooth 6 is offset from the center of the disc body 1 by 82-88 mm.

[0026] The tooth pitches between the first grinding teeth 4 , the tooth pitches between the second grinding teeth 5 , and the tooth pitches between the third grinding teeth 6 become smaller in sequence.

[0027] The number of teeth of the No. 1 grinding tooth 4 is 420, the number of teeth of the No. 2 grinding tooth 5 is 860, the number of teeth of the No. 3 grinding tooth 6 is 1140, the tooth profile angle of the No. 1 grinding tooth 4 is 55 degrees, and the tooth profile angles of the No. 2 grinding teeth 5 and the No. 3 grinding teeth 6 are 35 degrees. During the grinding process of the grinding disc 1, since the tooth pitch between the No. 1 grinding teeth 4, the tooth pitch between the No. 2 grinding teeth 5, and the tooth pitch between the No. 3 grinding teeth 6 become smaller in sequence, the material is ground step by step. Since the No. 3 grinding teeth 6 are arranged in a divergent and inclined manner and have an offset from the center of the disc body 1, the powder can stay on the No. 3 grinding teeth 6 for a longer time, thereby improving the fineness and uniformity of the powder.

[0028] In the embodiment, Figure 2 , Figure 3 As shown, an annular cooling groove 7 is provided on the back of the disc body 1. The disc body 1 is cooled to prevent the disc body 1 from being overheated and causing the ground powder to stick together or coke.

[0029] In the embodiment, Figure 2 , Figure 3 As shown, the front and rear ends of the annular cooling groove 7 are both provided with sealing grooves 8. A sealing ring is installed in the sealing groove 8 to ensure the sealing of the two sides of the annular cooling groove 7.

[0030] In the embodiment, Figure 1 , Figure 2 As shown, the disc body 1 includes a disc body 11 and a disc body 12, the first grinding tooth 4 and the second grinding tooth 5 are arranged on the disc body 11, and the third grinding tooth 6 is arranged on the disc body 12. To facilitate the processing of each grinding tooth on the disc body 1, the diameter of the disc body 11 is 644.5 mm, and the diameter of the disc body 12 is 750 mm.

[0031] In the embodiment, Figure 1 As shown, the first grinding tooth 4 has the longest length, and a transition channel 9 is provided between the first grinding tooth 4 and the second grinding tooth 5. The transition channel 9 has a heat dissipation effect on the ground powder to prevent the powder from being coked.

[0032] In the embodiment, the material of the disc body 1 is high carbon chromium bearing steel. The grinding teeth on the disc body 1 have high hardness and wear resistance and long service life.

[0033] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to provide all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the scope of protection of the present invention.

Claims

1. A grinding disc for a plastic grinding mill, comprising a disc body (1), wherein the disc body (1) is provided with a feed hole (2) and a fixing hole (3), and wherein: Also includes: A first grinding tooth (4), arranged near the feed hole (2); A second grinding tooth (5) is arranged on the outer side of the first grinding tooth (4); A third grinding tooth (6) is arranged outside the second grinding tooth (5), the third grinding tooth (6) is arranged in a divergent and inclined manner, and the tooth surface of the third grinding tooth (6) is offset from the center of the disc body (1) by 82-88 mm; The tooth pitch between the first grinding teeth (4), the tooth pitch between the second grinding teeth (5), and the tooth pitch between the third grinding teeth (6) decrease in sequence.

2. The grinding disc of the plastic grinding mill according to claim 1, characterized in that: An annular cooling groove (7) and the center of the disc body (1) are provided on the back side of the disc body (1).

3. The grinding disc of the plastic grinding mill as claimed in claim 2, characterized in that: Sealing grooves (8) are provided at both the front and rear ends of the annular cooling groove (7).

4. The grinding disc of the plastic grinding mill according to claim 1, characterized in that: The disc body (1) comprises a No. 1 disc body (11) and a No. 2 disc body (12), the No. 1 grinding tooth (4) and the No. 2 grinding tooth (5) are arranged on the No. 1 disc body (11), and the No. 3 grinding tooth (6) is arranged on the No. 2 disc body (12).

5. The grinding disc of the plastic grinding mill according to claim 1, characterized in that: The number one grinding tooth (4) is the longest, and a transition flow channel (9) is provided between the number one grinding tooth (4) and the number two grinding tooth (5).

6. The grinding disc of a plastic grinding mill as claimed in claim 1, characterized in that: The material of the disc body (1) is high-carbon chromium bearing steel.

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