Grinding and mixing device for raw materials of cable material

Abstract

The utility model relates to a grinding and mixing device for raw materials of cable materials. The grinding and mixing device comprises a grinding bin, a raw material conveying cylinder, a first grinding disc and a second grinding disc. The raw material conveying cylinder is coaxially and fixedly matched with the grinding bin, and the lower portion of the raw material conveying cylinder extends into the grinding bin and then is fixedly connected with the first grinding disc. And the lower port of the raw material conveying cylinder is communicated with the shaft hole in the grinding disc I along the vertical direction. The second grinding disc is oppositely arranged below the first grinding disc and matched with the driving motor through a transmission shaft arranged on the bottom wall of the grinding bin. And the grinding teeth I arranged on the grinding disc I can be meshed and matched with the grinding teeth II arranged on the grinding disc II. The first grinding teeth and the second grinding teeth are evenly distributed in multiple circles, and each circle comprises the multiple first grinding teeth and the multiple second grinding teeth which are distributed at intervals in the circumferential direction. And a material leakage opening is formed in the bottom wall of the grinding bin. According to the cable material grinding device, the grinding production efficiency of cable material raw materials can be improved, and the grinding and mixing uniformity is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of cable material processing equipment, specifically to a cable material raw material grinding and mixing device. Background Technology

[0002] Cable insulation material, commonly known as cable material, generally includes multiple components such as rubber, plastic, and nylon. Existing cable material grinding equipment mainly relies on a drive motor to rotate grinding rollers at high speed, extruding and crushing the various components of the cable material into particles, and achieving mixing. The main drawback is that the extrusion and grinding time of the cable material particles is relatively short, resulting in insufficient grinding efficiency in a single pass. Up to five or more cycles of grinding are required, leading to low production efficiency and high time and labor costs. Utility Model Content

[0003] To address the problem of low grinding efficiency in existing cable material grinding production equipment, this invention provides a cable material grinding and mixing device that can improve the grinding efficiency of cable material while ensuring the uniformity of grinding and mixing.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a grinding and mixing device for cable material raw materials, including a grinding chamber, a raw material conveying cylinder, a grinding disc one and a grinding disc two.

[0005] The raw material conveying cylinder is coaxially and fixedly matched with the grinding chamber, and the lower part of the raw material conveying cylinder extends into the grinding chamber and is fixedly connected to the grinding disc. The lower end of the raw material conveying cylinder is vertically connected to the shaft hole on the grinding disc.

[0006] The second grinding disc is positioned below the first grinding disc and is connected to a drive motor via a transmission shaft mounted on the bottom wall of the grinding chamber. In this way, the drive motor can drive the second grinding disc to rotate around a vertical axis.

[0007] Grinding teeth 1 and 2, which can mesh with each other, are distributed on the opposite end faces of grinding disc 1 and grinding disc 2. Grinding teeth 1 on grinding disc 1 and grinding teeth 2 on grinding disc 2 are distributed in multiple rings, and each ring contains multiple grinding teeth 1 and grinding teeth 2 distributed alternately in the circumferential direction.

[0008] A material outlet is provided on the bottom wall of the grinding chamber, through which the powdered cable material can be conveyed to the outside of the grinding chamber.

[0009] Optionally, an annular radial flange is formed at the lower end of the raw material conveying cylinder cavity, and a tapered countersunk hole is formed on the upper end face of the radial flange. The inner diameter of the lower end of the tapered countersunk hole is smaller than the inner diameter of the shaft hole. The outer diameter of the upper end of the drive shaft is larger than the inner diameter of the shaft hole. The upper end face of the drive shaft is formed as a spherical surface protruding upward relative to the upper end face of the grinding disc.

[0010] Optionally, a countersunk portion is formed at the lower end of the shaft hole, and a tapered countersunk hole II is formed on the inner end side of the countersunk portion, with the flared end of the tapered countersunk hole II facing downwards. The inner diameter of the flared end of the tapered countersunk hole II is not less than the outer diameter of the upper end of the transmission shaft.

[0011] Optionally, the projection of the first grinding tooth on the grinding disc one onto the end face of the grinding disc is arc-shaped; the projection of the second grinding tooth on the grinding disc two onto the end face of the grinding disc is also arc-shaped.

[0012] Optionally, the cross-section of the first grinding tooth on the first grinding disc is an isosceles trapezoid with concave arcs on both sides. The cross-section of the second grinding tooth on the second grinding disc is an isosceles trapezoid with convex arcs on both sides. After the first and second grinding discs mesh, when the second grinding tooth corresponds between two adjacent first grinding teeth, a gap channel can be formed between the tooth surface of the second grinding tooth and the tooth groove surface between the first grinding teeth.

[0013] Optionally, at least in the middle of the tooth surface of the second grinding tooth, an L-shaped groove is formed, and the angle of the L-shape is an obtuse angle.

[0014] Optionally, the grinding teeth 1 distributed on the first grinding disc are staggered between adjacent rings, so that the circumferential spacing between two adjacent grinding teeth 1 in each layer forms a mutual shield; and / or the grinding teeth 2 distributed on the second grinding disc are staggered between adjacent rings, so that the circumferential spacing between two adjacent grinding teeth 2 in each ring forms a mutual shield.

[0015] Optionally, in the multiple rings of grinding teeth arranged on the first grinding disc, each ring contains the same number of grinding teeth. In the multiple rings of grinding teeth arranged on the second grinding disc, each ring contains the same number of grinding teeth.

[0016] Optionally, in the multiple rings of grinding teeth arranged on the first grinding disc, the number of grinding teeth in each ring is different or partially the same; and / or in the multiple rings of grinding teeth arranged on the second grinding disc, the number of grinding teeth in each ring is different or partially the same.

[0017] The beneficial effects of this utility model are: it can improve the grinding production efficiency of cable material raw materials and also ensure the uniformity of grinding and mixing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the axial cross-sectional structure of grinding disc one and grinding disc two in the meshing state.

[0020] Figure 3 This is a top view of the structure of millstone two.

[0021] In the diagram: 10 Grinding chamber, 11 Material outlet, 12 Support frame, 13 Support leg; 20 Raw material conveying cylinder, 21 Flange, 22 Radial flange, 221 Conical countersunk hole one; 30 Grinding disc one, 31 Shaft hole, 32 Countersunk hole section, 321 Conical countersunk hole two, 33 Grinding tooth one; 40 Grinding disc two, 41 Grinding tooth two, 411 Channel, 42 Conical surface; 50 Drive shaft, 51 Spherical surface; 60 Drive motor. Detailed Implementation

[0022] The structures, proportions, and sizes shown in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art. They are not intended to limit the scope of this invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, provided they do not affect the effectiveness or purpose of this invention, should still fall within the scope of the technical content disclosed in this invention. Furthermore, terms such as "upper," "lower," "front," "rear," and "middle" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0023] like Figures 1 to 3 The illustrated cable material grinding and mixing device includes a grinding chamber 10, a material conveying cylinder 20, a first grinding disc 30, and a second grinding disc 40. The material conveying cylinder 20 is coaxially fixedly matched with the grinding chamber 10, and the lower part of the material conveying cylinder 20 extends into the grinding chamber 10 and is fixedly connected to the first grinding disc 30. The lower end of the material conveying cylinder 20 communicates vertically with the shaft hole 31 on the first grinding disc 30.

[0024] like Figure 1 As shown, a support frame 12 is fixedly installed at the upper end of the grinding chamber 10. The raw material conveying cylinder 20 is fixed to the support frame 12, so that it is indirectly and fixedly connected to the grinding chamber 10 through the support frame 12, thereby making the raw material conveying cylinder 20 stand stably on the upper part of the chamber of the grinding chamber 10. A flange 21 is formed at the lower end of the raw material conveying cylinder 20, which is fixedly connected to the grinding disc 30.

[0025] The second grinding disc 40 is positioned below the first grinding disc 30 and is matched with the drive motor 60 via a transmission shaft 50 located on the bottom wall of the grinding chamber 10. In this way, the drive motor 60 can drive the second grinding disc 40 to rotate around a vertical axis, thereby generating relative movement between the opposite end faces of the first grinding disc 30 and the second grinding disc 40.

[0026] Multiple grinding teeth 33 distributed on the first grinding disc 30 can mesh with multiple grinding teeth 41 distributed on the second grinding disc 40. For example... Figure 3 As shown, the grinding teeth 41 on the second grinding disc 40 are distributed in three rings (i.e., three coaxial layers), and each ring contains eight grinding teeth 41 distributed alternately around the circumference. Similarly, the grinding teeth 33 on the first grinding disc 30 are distributed in multiple rings (i.e., multiple coaxial layers), and each ring contains multiple grinding teeth 33 distributed alternately around the circumference.

[0027] Multiple support legs 13 are provided at the lower part of the grinding chamber 10. A material outlet 11 is provided on the bottom wall of the grinding chamber 10. The cable material material flowing through the cylinder cavity of the raw material conveying cylinder 20 and entering the shaft hole 31 is ground into powder by the grinding teeth when it flows through the gap between the opposite end faces of the first grinding disc 30 and the second grinding disc 40. The ground cable material material can be conveyed out of the grinding chamber 10 through the material outlet 11.

[0028] Before being fed into the material conveying cylinder 20, the cable material raw material needs to undergo premixing treatment to ensure that the various components reach a certain premixed state. The cable material raw material flows slowly downwards within the material conveying cylinder 20 under its own gravity. As the cable material raw material flows radially past the opposite end faces of the two grinding discs, it undergoes multiple grinding processes and flows circumferentially during grinding. Therefore, during the grinding process, it is repeatedly ground and pulverized while continuously remixed, thereby improving the grinding and mixing effect of the cable material raw material.

[0029] To facilitate the slow downward flow of cable material into the shaft hole 31 and its radial outward diffusion, an annular radial flange 22 is formed at the lower end of the material conveying cylinder 20, and a tapered countersunk hole 221 is formed on the upper end face of the radial flange 22. The inner diameter of the lower end of the tapered countersunk hole 221 is smaller than the inner diameter of the shaft hole 31, and the inner diameter of the upper end is the same as the inner diameter of the material conveying cylinder 20. The outer diameter of the upper end of the drive shaft 50 is larger than the inner diameter of the shaft hole 31. The upper end face of the drive shaft 50 is formed as a spherical surface 51 protruding upward relative to the upper end face of the grinding disc 40.

[0030] A countersunk hole 32 is formed at the lower end of the shaft hole 31, and a tapered countersunk hole 321 is formed on the inner end side of the countersunk hole 32, with the flared end of the tapered countersunk hole 321 facing downwards. The inner diameter of the flared end of the tapered countersunk hole 321 is not less than the outer diameter of the upper end of the drive shaft 50.

[0031] To extend the grinding time of the cable material between the two grinding discs, and to promote uniform mixing. For example... Figure 3As shown, the projection of the second grinding tooth 41 on the grinding disc 40 onto its end face is arc-shaped; similarly, the projection of the first grinding tooth 33 on the grinding disc 30 onto its end face is arc-shaped. When the cable material flows through the meshing surface of the first grinding tooth 33 and the second grinding tooth 41, it can be ground for a longer time in the circumferential direction, and the time it takes for the cable material to flow radially from the shaft hole 31 to the conical surface 42 at the outer periphery of the grinding disc 40 can be extended.

[0032] To promote the flow of cable material between the opposing surfaces of the two grinding discs and prevent clogging. For example... Figure 1 , Figure 2 As shown, the cross-section of the grinding teeth 33 on the first grinding disc 30 is an isosceles trapezoid with concave arcs on both sides; correspondingly, the cross-section of the grinding teeth 41 on the second grinding disc 40 is an isosceles trapezoid with convex arcs on both sides. To improve the grinding and pulverizing effect, at least some of the grinding teeth 41 have L-shaped grooves 411 formed in the middle of the tooth surfaces on both sides, and the angle of the L-shape is an obtuse angle.

[0033] After the first grinding disc 30 and the second grinding disc 40 are engaged, when the second grinding tooth 41 corresponds between two adjacent first grinding teeth 33, a gap channel can be formed between the tooth surface of the second grinding tooth 41 and the tooth groove surface between the first grinding tooth 33, and a gap channel can be formed between the tooth surface of the first grinding tooth 33 and the tooth groove surface between the second grinding tooth 41.

[0034] To extend the grinding time of the cable material between the two grinding discs, and to promote uniform mixing. For example... Figure 3 As shown, the grinding teeth 41 arranged in multiple rings on the second grinding disc 40 are staggered between adjacent rings, so that the circumferential spacing between two adjacent grinding teeth 41 in each ring is mutually blocked. Similarly, the grinding teeth 33 arranged in multiple rings on the first grinding disc 30 are staggered between adjacent rings, so that the circumferential spacing between two adjacent grinding teeth 33 in each ring is mutually blocked.

[0035] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit it. Many aspects of this utility model can be improved without departing from the overall concept. Those skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A cable compound raw material grinding and mixing apparatus, characterized by: The grinding bin (10), the raw material conveying cylinder (20), the first grinding disc (30) and the second grinding disc (40) are included. The raw material conveying cylinder (20) is coaxially fixedly matched with the grinding bin (10), and the lower part of the raw material conveying cylinder (20) is fixedly connected with the first grinding disc (30) after extending into the grinding bin (10); the lower end port of the raw material conveying cylinder (20) is vertically penetrated with the shaft hole (31) on the first grinding disc (30). The second grinding disc (40) is oppositely arranged below the first grinding disc (30) and is matched with the driving motor (60) through the transmission shaft (50) arranged on the bottom wall of the grinding bin (10). The first grinding teeth (33) arranged on the first grinding disc (30) can be meshingly matched with the second grinding teeth (41) arranged on the second grinding disc (40); the first grinding teeth (33) on the first grinding disc (30) and the second grinding teeth (41) on the second grinding disc (40) are distributed with multiple circles, and each circle contains multiple first grinding teeth (33) and second grinding teeth (41) distributed in the circumferential direction. A material leakage port (11) is arranged on the bottom wall of the grinding bin (10).

2. The cable compound raw material grinding and mixing device of claim 1, wherein: A radial flange (22) in the form of a ring is formed at the lower end of the cylinder cavity of the raw material conveying cylinder (20), and a conical counterbore (221) is formed on the upper end surface of the radial flange (22); the inner diameter of the lower end port of the conical counterbore (221) is smaller than the inner diameter of the shaft hole (31); the outer diameter of the upper end of the transmission shaft (50) is larger than the inner diameter of the shaft hole (31); the upper end surface of the transmission shaft (50) is formed into a spherical surface (51) protruding upward relative to the upper end surface of the second grinding disc (40).

3. The cable compound raw material grinding and mixing apparatus of claim 2, wherein: A counterbore portion (32) is formed at the lower end port of the shaft hole (31), and a conical counterbore (321) is formed on the inner end side of the counterbore portion (32), and the flared end of the conical counterbore (321) faces downward; the inner diameter of the flared end port of the conical counterbore (321) is not less than the outer diameter of the upper end of the transmission shaft (50).

4. The cable compound raw material grinding and mixing device of claim 1, wherein: The projection of the first grinding teeth (33) on the first grinding disc (30) on the disc end surface is in the form of a circular arc; the projection of the second grinding teeth (41) on the second grinding disc (40) on the disc end surface is in the form of a circular arc.

5. The cable compound raw material grinding and mixing apparatus of claim 4, wherein: The cross section of the first grinding teeth (33) on the first grinding disc (30) is in the form of an isosceles trapezoid, and the two side legs are in the form of concave arcs; the cross section of the second grinding teeth (41) on the second grinding disc (40) is in the form of an isosceles trapezoid, and the two side legs are in the form of convex arcs.

6. The cable compound raw material grinding and mixing apparatus of claim 5, wherein: At least in the middle part of the two side tooth surfaces of the second grinding teeth (41), a groove (411) in the form of an L-shaped structure is formed, and the angle of the L-shaped structure is obtuse.

7. The cable compound raw material grinding and mixing device of claim 1, wherein: The multiple circles of the first grinding teeth (33) distributed on the first grinding disc (30) are staggered with each other, and the circumferential spacing between the two adjacent first grinding teeth (33) in each circle is shielded from each other; and / or the multiple circles of the second grinding teeth (41) distributed on the second grinding disc (40) are staggered with each other, and the circumferential spacing between the two adjacent second grinding teeth (41) in each circle is shielded from each other.

8. The cable compound raw material grinding and mixing device of claim 1, wherein: The number of the grinding teeth (33) in each circle of the grinding teeth (33) arranged on the first grinding disc (30) is the same; and the number of the grinding teeth (41) in each circle of the grinding teeth (41) arranged on the second grinding disc (40) is the same.

9. The cable compound raw material grinding and mixing device of claim 1, wherein: The number of the grinding teeth (33) in each circle of the grinding teeth (33) arranged on the first grinding disc (30) is different or partially the same; and / or the number of the grinding teeth (41) in each circle of the grinding teeth (41) arranged on the second grinding disc (40) is different or partially the same.

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