Grinding disc for plastic particle grinding machine

Abstract

The utility model discloses a millstone for a plastic particle pulverizer, which comprises a circular disc body, the disc body is provided with a fixing hole and a feeding hole, the disc body is provided with a first gear ring, a second gear ring and a third gear ring from inside to outside, and the first gear ring, the second gear ring and the third gear ring are concentrically arranged with the feeding hole. The first gear ring comprises a plurality of first grinding teeth arranged in a radial mode, the second gear ring comprises a plurality of second grinding teeth arranged in a radial mode, and the third gear ring comprises a plurality of third grinding teeth with extension lines intersecting with the radial line of the disc body. The vertical sections of the first grinding teeth, the second grinding teeth and the third grinding teeth are all of a right triangle structure with the same side perpendicular to the disc body. The grinding effect can be optimized by adopting the matching of the grinding teeth in different forms, and meanwhile, the grinding teeth are of right triangle structures, so that shearing force can be formed to improve the grinding effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grinding disc, especially a grinding disc for plastic particle grinding mill. BACKGROUND

[0002] The grinding mill is widely applied to the powder grinding processing of materials in metallurgy, building material, chemical industry, mine and other fields. The grinding disc is arranged on the grinding mill, the fixing hole is arranged on the grinding disc, and the grinding disc is installed on or detached from the grinding mill through the fixing hole. The feeding port and the receiving box are arranged on the grinding mill, and the feeding hole is arranged on the grinding disc at the center of the grinding disc. At least one ring gear is arranged on the grinding disc, which is used for cutting materials and grinding the materials into powder with small particle size. When processing materials, the materials are poured into the feeding port, and the materials enter the grinding disc through the feeding hole and are ground, and the materials enter the receiving box through the gap between the grinding discs after reaching a certain thickness.

[0003] However, the at least one ring gear on the existing grinding disc includes a plurality of grinding bars arranged in a radial manner, and the cross-sectional shape of the grinding bar is an acute triangle structure. The grinding disc with such a structure has poor grinding effect and has room for improvement. CONTENT

[0004] The utility model discloses in order to overcome the defect in the prior art, provide a grinding disc for plastic particle grinding mill, adopt the grinding tooth cooperation of different forms to optimize the grinding effect, and the grinding tooth is all right angle triangle structure simultaneously can form shear force to improve the grinding effect.

[0005] In order to achieve the above object, the utility model provides a grinding disc for plastic particle grinding mill, including the disc body of circular, the disc body is opened with fixed hole and feeding hole, the disc body is provided with first ring gear, second ring gear and third ring gear with feeding hole concentric arrangement from inside to outside, first ring gear includes a plurality of first grinding tooth that is arranged in a radial manner, second ring gear includes a plurality of second grinding tooth that is arranged in a radial manner, third ring gear includes a plurality of third grinding tooth that is arranged in a radial manner, the vertical cross-sectional shape of first grinding tooth, second grinding tooth and third grinding tooth is all right angle triangle structure with one side perpendicular to the disc body.

[0006] Further setting is that: the distance between the tooth top of adjacent first grinding tooth corresponding to first ring gear is greater than the distance between the tooth top of adjacent second grinding tooth corresponding to second ring gear, and the distance between the tooth top of adjacent second grinding tooth corresponding to second ring gear is greater than the distance between the tooth top of adjacent third grinding tooth corresponding to third ring gear.

[0007] Further setting is that: the tooth height of first grinding tooth is greater than the tooth height of second grinding tooth, and the tooth height of third grinding tooth is greater than the tooth height of second grinding tooth and less than the tooth height of first grinding tooth.

[0008] Further arrangement: the vertical cross-sectional shape of the first grinding tooth is an isosceles right triangle.

[0009] Further arrangement: the vertical cross-sectional shape of the second grinding tooth is an isosceles right triangle.

[0010] Further arrangement: the vertical cross-sectional shape of the third grinding tooth is a right triangle with an included angle of 30° between two sides.

[0011] Further arrangement: the included angle between the extension line of the third grinding tooth and the radial line of the disc body is 15°.

[0012] Further arrangement: the thickness of the disc body gradually increases from inside to outside.

[0013] Further arrangement: the disc body comprises an inner disc and an outer disc arranged separately;

[0014] The inner disc is in a ring structure and its inner hole is a feeding hole, the first and second tooth rings are arranged on the inner disc, and a plurality of first fixing holes for fixing to the flour mill are further arranged on the inner disc;

[0015] The outer disc is in a ring structure and is sleeved outside the inner disc, the third tooth ring is arranged on the outer disc, and a plurality of second fixing holes for fixing to the flour mill are further arranged on the outer disc.

[0016] Further arrangement: the major diameter of the inner disc is 645mm;

[0017] A plurality of first fixing holes are arranged circumferentially on the inner disc, and the diameters of the circles formed by connecting the centers of a plurality of first fixing holes are 512mm;

[0018] The major diameter of the outer disc is 750mm and the minor diameter is 645mm;

[0019] A plurality of second fixing holes are arranged circumferentially on the outer disc, and the diameters of the circles formed by connecting the centers of a plurality of second fixing holes are 698mm.

[0020] Compared with the prior art, the utility model has the advantages of simple and reasonable structure, and the inner disc and the outer disc arranged separately can facilitate the arrangement of grinding teeth of different structures, and the cooperation of grinding teeth of different structures can greatly optimize the grinding effect; in addition, the cross-sectional shape of the first, second and third grinding teeth is a right triangle structure, which can form a shearing effect during action to further improve the grinding effect. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure schematic view of a flour mill to which the grinding disc of the utility model is applied;

[0022] Figure 2is a structural schematic view of the grinding disc of the plastic particle grinding mill;

[0023] Figure 3 is a structural schematic view of the inner disc;

[0024] Figure 4 is a sectional structural schematic view of the inner disc;

[0025] Figure 5 is an enlarged sectional view corresponding to the first gear ring;

[0026] Figure 6 is an enlarged sectional view corresponding to the second gear ring;

[0027] Figure 7 is a structural schematic view of the outer disc;

[0028] Figure 8 is an enlarged sectional view corresponding to the third gear ring.

[0029] The following reference signs are marked on the drawings in conjunction with the drawings:

[0030] 1, rack; 2, rotor; 3, moving grinding disc; 4, static grinding disc; 10, disc body; 20, inner disc; 21, first gear ring; 211, first grinding tooth; 22, second gear ring; 221, second grinding tooth; 23, feeding hole; 24, first fixing hole; 30, outer disc; 31, third gear ring; 311, third grinding tooth; 32, second fixing hole; S1, distance between adjacent first grinding tooth crests; S2, distance between adjacent second grinding tooth crests; S3, distance between adjacent third grinding tooth crests; D1, thickness of the inner disc corresponding to the first gear ring; D2, thickness of the inner disc corresponding to the second gear ring; D3, thickness of the outer disc corresponding to the third gear ring; H1, tooth height of the first grinding tooth; H2, tooth height of the second grinding tooth; H3, tooth height of the third grinding tooth. DETAILED DESCRIPTION

[0031] The specific embodiment of the utility model is described in detail below in conjunction with the drawings, but it should be understood that the protection scope of the utility model is not limited by the specific embodiment.

[0032] The grinding mill suitable for the grinding disc of the utility model is shown in Figure 1 It comprises a rack 1, a rotor 2, a moving grinding disc 3 and a static grinding disc 4, the rotor 2 can be driven to rotate and is installed on the rack 1, the moving grinding disc 3 is fixedly installed on the rotor 2, the static grinding disc 4 is fixedly installed on the rack 1 opposite to the moving grinding disc 3, and the moving grinding disc 3 and the static grinding disc 4 can cooperate to grind the material entering between the two.

[0033] The grinding disc of the plastic particle grinding mill of the utility model is shown in Figure 2As shown, it can be used as a dynamic grinding disc 3 and a static grinding disc 4 of a flour mill, which comprises a circular disc body 10 provided with a fixing hole and a feeding hole 23, and the disc body 10 is provided with a first gear ring 21, a second gear ring 22 and a third gear ring 31 concentrically arranged from inside to outside.

[0034] In this embodiment, as shown in Figure 2 , Figure 3 and Figure 6 , the disc body 10 specifically comprises an inner disc 20 and an outer disc 30 arranged separately; wherein the inner disc 20 is a circular ring structure and its inner hole is a feeding hole 23 for feeding, the large circle diameter of the inner disc 20 is 645mm, the upper deviation allowed is -0.1mm, and the lower deviation is -0.2mm, the feeding hole 23 of the inner disc 20 is a conical structure, and the diameter of the large end is 395mm and the diameter of the small end is 380mm, the upper deviation allowed of the small end diameter is 0.2mm, and the lower deviation is 0.1mm; the inner disc 20 is provided with a first gear ring 21 and a second gear ring 22 concentrically arranged from inside to outside, the first gear ring 21 and the second gear ring 22 are used to cut the material and grind the material into powder with smaller particle size, the inner disc 20 is also provided with a first fixing hole 24 for fixing it to the flour mill, a plurality of first fixing holes 24 are preferably arranged in a circumferential interval, and the diameter of the circle formed by connecting the centers of a plurality of first fixing holes 24 is 512mm; the outer disc 30 is a circular ring structure sleeved outside the inner disc 20, and the small circle diameter is 645mm and the large circle diameter is 750mm, the upper deviation allowed of the small circle diameter is 0.2mm, and the lower deviation is 0.1mm; the outer disc 30 is provided with a third gear ring 31 arranged concentrically, the third gear ring 31 is used to cut the material and grind the material into powder with smaller particle size, and the outer disc 30 is also provided with a plurality of second fixing holes 32 for fixing it to the flour mill, a plurality of second fixing holes 32 are preferably arranged in a circumferential interval, and the diameter of the circle formed by connecting the centers of a plurality of second fixing holes 32 is 698mm; in this way, by limiting the size of the inner and outer discs and the position of the corresponding fixing holes, the grinding disc can be suitable for a specific flour mill.

[0035] In this embodiment, as shown in Figure 2 and Figure 4 , the first gear ring 21 comprises a plurality of first grinding teeth 211 arranged in a radial manner, and the extension line of each first grinding tooth 211 can pass through the center of the feeding hole 23, that is, it extends radially; the vertical cross-sectional shape of the first grinding tooth 211 is a right triangle structure with one side perpendicular to the inner disc 20, so that when the grinding disc is installed on the flour mill as a dynamic grinding disc 3 and a static grinding disc 4 for operation, it can form a shearing force to improve the grinding effect and grinding uniformity; wherein the distance between the tooth tips of the corresponding adjacent first grinding teeth of the first gear ring is S1, the tooth height of the first grinding tooth is H1, and the thickness of the inner disc at the corresponding first gear ring is D1.

[0036] In the embodiment, as shown in Figure 2 and Figure 5 , the second gear ring 22 comprises a plurality of second grinding teeth 221 arranged in a radial manner, and the extension line of each second grinding tooth 221 can pass through the center of the feed hole 23, that is, it extends radially; the vertical cross-sectional shape of the second grinding tooth 221 is a right triangle structure with one side perpendicular to the inner disc 20 and the right angle side is on the same side as the right angle side of the first grinding tooth 211, so that when the grinding disc is installed on the grinding machine as a dynamic grinding disc 3 and a static grinding disc 4, a shearing force can be formed to improve the grinding effect and grinding uniformity; wherein the distance between the tooth tips of the corresponding adjacent second grinding teeth of the second gear ring is S2, the tooth height of the second grinding tooth is H2, and the thickness of the inner disc at the corresponding second gear ring is D2.

[0037] In the embodiment, as shown in Figure 6 and Figure 7 , the third gear ring 31 covers the outer disc 30, which comprises a plurality of third grinding teeth 311 arranged obliquely and intersecting the radial line of the disc body, and the angle between the extension line and the radial line is preferably 15°, so that when the grinding disc is installed on the grinding machine as a dynamic grinding disc 3 and a static grinding disc 4 and the directions of the third grinding teeth 311 of the two are oppositely arranged, an X-shaped shearing force can be formed between the outer discs to improve the grinding effect and grinding uniformity; the vertical cross-sectional shape of the third grinding tooth 311 is a right triangle with one side perpendicular to the outer disc 30 and the right angle side is on the same side as the right angle side of the first grinding tooth 211, and the third grinding tooth 311 in the right triangle structure can form a shearing force to improve the grinding effect and grinding uniformity; wherein the distance between the tooth tips of the corresponding adjacent third grinding teeth of the third gear ring is S3, the tooth height of the third grinding tooth is H3, and the thickness of the outer disc at the corresponding third gear ring 31 is D3.

[0038] In the embodiment, as shown in Figure 4 , Figure 5 and Figure 7 , the distance S1 between the tooth tips of the corresponding adjacent first grinding teeth of the first gear ring is greater than the distance S2 between the tooth tips of the corresponding adjacent second grinding teeth of the second gear ring, and the tooth height H1 of the first grinding tooth is greater than the tooth height H2 of the second grinding tooth, so that the grinding fineness of the second grinding tooth 221 is better than that of the first grinding tooth 211; at the same time, the distance S3 between the tooth tips of the corresponding adjacent third grinding teeth of the third gear ring is less than the distance S2 between the tooth tips of the corresponding adjacent second grinding teeth of the second gear ring, and the tooth height H3 of the third grinding tooth is greater than the tooth height H2 of the second grinding tooth and less than the tooth height H1 of the first grinding tooth, so that the grinding fineness of the third grinding tooth 311 is less than that of the second grinding tooth 221; in this way, the grinding disc can improve the uniformity of material grinding through step-by-step refinement grinding.

[0039] In the embodiment, as shown in Figure 3As shown, the thickness D1 of the inner disc corresponding to the first ring gear is less than the thickness D2 of the inner disc corresponding to the second ring gear, and the thickness D2 of the inner disc corresponding to the second ring gear is less than the thickness D3 of the outer disc corresponding to the third ring gear, preferably, the thickness of the disc body 10 gradually increases from inside to outside, and the end surface for grinding is a bevel structure, so that when the grinding disc is installed on the grinding machine as a static grinding disc and a dynamic grinding disc, a grinding gap gradually decreasing from inside to outside can be formed, thereby effectively improving the uniformity of material grinding.

[0040] In the embodiment, as shown in Figure 4 、 Figure 5 and Figure 7 , the vertical cross-sectional shape of the first grinding tooth 211 is preferably an isosceles right triangle with an included angle of 45° between the two sides, the vertical cross-sectional shape of the second grinding tooth 221 is preferably an isosceles right triangle with an included angle of 45° between the two sides, and the vertical cross-sectional shape of the third grinding tooth 311 is preferably a right triangle with an included angle of 30° between the two sides, so that the grinding tooth combination of such structure has better grinding effect.

[0041] Compared with the prior art, the utility model has simple and reasonable structure, and through the inner disc and the outer disc arranged in a split body, different structure forms of grinding teeth can be conveniently arranged, and through cooperation of different structure forms of grinding teeth, the grinding effect can be greatly optimized; furthermore, the cross-sectional shape of the first, second and third grinding teeth is a right triangle structure, so that a shearing effect can be formed during action to further improve the grinding effect.

[0042] The above disclosure is only an embodiment of the utility model, but the utility model is not limited to this, and any change that can be thought of by those skilled in the art should fall within the protection scope of the utility model.

Claims

1. A grinding disc for a plastic particle grinder, comprising a circular disc body, a fixing hole and a feeding hole are formed on the disc body, characterized in that, The first gear ring, the second gear ring and the third gear ring are arranged concentrically on the disc from inside to outside, the first gear ring comprises a plurality of first grinding teeth arranged radially, the second gear ring comprises a plurality of second grinding teeth arranged radially, and the third gear ring comprises a plurality of third grinding teeth arranged in intersecting relationship with the radial line of the disc.

2. A grinding plate for a plastic pellet mill according to claim 1, wherein, The distance between the tooth tips of the adjacent first grinding teeth of the first gear ring is greater than the distance between the tooth tips of the adjacent second grinding teeth of the second gear ring, and the distance between the tooth tips of the adjacent second grinding teeth of the second gear ring is greater than the distance between the tooth tips of the adjacent third grinding teeth of the third gear ring.

3. A grinding plate for a plastic pellet mill according to claim 1, wherein, The tooth height of the first grinding teeth is greater than the tooth height of the second grinding teeth, and the tooth height of the third grinding teeth is greater than the tooth height of the second grinding teeth and less than the tooth height of the first grinding teeth.

4. The grinding plate for a plastic pellet mill according to claim 1, wherein, The vertical cross-sectional shape of the first grinding teeth is an isosceles right triangle.

5. A grinding plate for a plastic pellet mill according to claim 1, wherein, The vertical cross-sectional shape of the second grinding teeth is an isosceles right triangle.

6. A grinding plate for a plastic pellet mill according to claim 1, wherein, The vertical cross-sectional shape of the third grinding teeth is a right triangle with an included angle of 30° between the two sides.

7. A grinding plate for a plastic pellet mill according to claim 1, wherein The included angle between the extension line of the third grinding teeth and the radial line of the disc is 15°.

8. The grinding plate for a plastic pellet mill according to claim 1, wherein, The thickness of the disc gradually increases from inside to outside.

9. The grinding plate for a plastic pellet mill according to claim 1, wherein, The disc comprises an inner disc and an outer disc arranged in two parts. The inner disc is in ring structure and has a feed hole as the inner hole, the first gear ring and the second gear ring are arranged on the inner disc, and a plurality of first fixing holes for fixing to the flour mill are further arranged on the inner disc. The outer disc is in ring structure and is sleeved outside the inner disc, the third gear ring is arranged on the outer disc, and a plurality of second fixing holes for fixing to the flour mill are further arranged on the outer disc.

10. A grinding plate for a plastic pellet mill according to claim 9, wherein, The major diameter of the inner disc is 645 mm. A plurality of first fixing holes are arranged circumferentially on the inner disc with a center distance of 512 mm. The major diameter of the outer disc is 750 mm and the minor diameter is 645 mm. A plurality of second fixing holes are arranged circumferentially on the outer disc with a center distance of 698 mm.

Images