Grinding apparatus for cable production raw materials

Abstract

The present application relates to the technical field of flour mill, in particular to a kind of grinding equipment for cable production raw material, including feeding cylinder, grinding cylinder and material collecting cylinder fixedly connected in turn from top to bottom, material collecting cylinder is fixed at the top of base, driving mechanism for driving dynamic grinding disc rotation is arranged on base, fixed grinding base that gradually changes downward is fixed in grinding cylinder, and the inner wall of fixed grinding base is evenly distributed with several tooth edges;Dynamic grinding disc gradually changes downward, and is coaxially arranged in fixed grinding base, and a plurality of grinding cutters are fixed on the outer peripheral wall of dynamic grinding disc in interval mode.The present application forms dynamic mechanical disturbance by two disturbance rollers, and the two disturbance rollers in reverse rotation can actively scatter the material falling from above to the side, destroy the arching or agglomeration phenomenon of material between grinding cutters due to extrusion and winding, eliminate the grinding dead zone, ensure the continuity of material flow in grinding cavity, reduce the risk of jamming and the frequency of shutdown cleaning.

Description

Technical Field

[0001] This invention relates to the field of grinding mill technology, specifically to a grinding equipment for raw materials used in cable production. Background Technology

[0002] In the cable production process, raw materials such as additives, inorganic fillers, conductive fillers, and outer insulation sheath materials need to be ground and refined to improve the compatibility and dispersion uniformity of the raw materials with the cable substrate, avoid local component imbalance, and enhance the bonding force between the raw materials and the substrate, thereby optimizing key properties of the cable such as insulation, flame retardancy, conductivity, and mechanical strength. In existing technologies, disc mills are mostly used to grind and refine cable raw materials. Traditional disc mills mainly achieve material grinding and refinement by placing the material between an upper moving grinding disc and a lower fixed grinding disc, utilizing the relative movement of the moving and fixed grinding discs.

[0003] The outer insulation sheath of waste cables, after being stripped, recycled, and cut into sections, can be used as raw material for cable production. However, during actual grinding, workers discovered that soft and easily deformable materials, such as sections of waste insulation sheath, exhibit the following characteristics: When the aforementioned soft raw materials are fed from the center between the moving and stationary grinding discs, they are easily deformed and accumulated under pressure, making it impossible for them to enter the grinding gap of the grinding discs evenly. As a result, the effective contact area with the grinding discs is insufficient, leading to incomplete grinding and uneven particle size distribution of the powder. When these soft materials accumulate, they are prone to jamming and blockage, which can easily cause the grinding gap to become clogged, requiring frequent cleaning and maintenance and affecting grinding efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a grinding device for cable production raw materials to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A grinding device for cable production raw materials includes a feeding cylinder, a grinding cylinder, and a collecting cylinder, which are fixedly connected from top to bottom. The collecting cylinder is fixed to the top of a base, and a drive mechanism for driving a rotating grinding disc is provided on the base. A fixed grinding seat that gradually narrows downwards is fixed inside the grinding cylinder, and several toothed blades are evenly distributed on the inner wall of the fixed grinding seat. The rotating grinding disc gradually narrows downwards and is coaxially arranged inside the fixed grinding seat. Multiple grinding tools are fixed at intervals on the outer peripheral wall of the rotating grinding disc. An annular grinding cavity is formed between the fixed grinding seat and the rotating grinding disc, and the diameter of the annular grinding cavity decreases towards the bottom. A disturbance module is provided on the periphery of the rotating grinding disc between two adjacent grinding tools. The disturbance module includes two disturbance rollers. A linkage mechanism is provided inside the rotating grinding disc to simultaneously drive the two disturbance rollers in each disturbance module to rotate in opposite directions when the rotating grinding disc rotates, so as to prevent material from getting stuck between the two grinding tools.

[0007] Preferably, the moving grinding disc has an installation cavity and a vertically penetrating through hole. A support column is fixedly installed on the top of the base. The top of the support column passes vertically through the installation cavity and is rotatably connected to the inner wall of the through hole. Side grooves are opened on the periphery of the moving grinding disc between two adjacent grinding tools. Two disturbance rollers in each disturbance module are symmetrically rotated and installed in the corresponding side grooves. The disturbance rollers are all inclined and adapted to the shape of the annular grinding cavity. Each disturbance roller is exposed to the outside of the moving grinding disc. The bottom end of each disturbance roller extends through into the installation cavity. The linkage mechanism is located in the installation cavity and is drivenly connected to the bottom end of each disturbance roller.

[0008] Preferably, the linkage mechanism includes a first helical gear ring, a second helical gear ring, a plurality of first gears, and a plurality of second gears; the bottom end of one of the disturbance rollers of each disturbance module is fixed with a first gear, and the bottom end of the other disturbance roller is fixed with a second gear, and the first gears and second gears are distributed in a staggered manner; the first helical gear ring is fixed on the outer wall of the support column through a first connecting arm, and the first helical gear ring meshes with each of the first gears; the second helical gear ring is fixed on the outer wall of the support column through a second connecting arm, and the second helical gear ring meshes with each of the second gears.

[0009] Preferably, the teeth on the first helical tooth ring are distributed on the outer periphery of the first helical tooth ring; the teeth on the second helical tooth ring are distributed on the inner edge wall of the second helical tooth ring.

[0010] Preferably, the drive mechanism includes a drive motor; the support column is a hollow body, and a connecting shaft is rotatably installed inside the support column, and the base has a cavity; the top end of the connecting shaft is fixedly connected to an end cap fixed on the top of the moving grinding disc, and the bottom end of the connecting shaft extends through into the cavity of the base; the drive motor is fixed to the top of the base through a motor mount; the output shaft of the drive motor extends through into the cavity of the base and is connected to the bottom end of the connecting shaft through a pulley drive assembly.

[0011] Preferably, the grinding equipment for the raw materials of this cable production also includes an air intake system; there is a second gap between the two disturbance rollers in the same disturbance module, and there is a first gap between the inner walls of both sides of the side groove and the disturbance roller on the same side; the air intake system is used to supply airflow into each side groove when the moving grinding disc rotates, and the airflow can finally be ejected from the first gap and the second gap.

[0012] Preferably, the air intake system includes several inlet channels, a concave cavity, an annular cavity, several guide holes, and an inlet pipe; a concave cavity is formed around the support column on the inner wall of the through hole, and an annular cavity is formed around the axis of the support column; inlet channels are provided on the inner wall of the side groove, all of which communicate with the concave cavities; several guide holes are evenly distributed around the axis of the support column on the outer wall; one side of the guide hole communicates with the annular cavity, and the other side communicates with the concave cavity; one end of the inlet pipe extends into the collection cylinder and communicates with the annular cavity, and the other end is connected to the external fan module through a connecting pipe.

[0013] Preferably, a heater is installed on the connecting pipe.

[0014] Preferably, the material fed through the feeding cylinder can be aligned and fall onto the end cap; the top of the moving grinding disc is fixed with several protruding plates at intervals around the end cap, and each protruding plate extends radially along the moving grinding disc.

[0015] Preferably, the grinding base is assembled from multiple arc-shaped plates with evenly distributed toothed blades on their inner surfaces; an annular cylinder seat is fixed inside the grinding cylinder; each arc-shaped plate is fixed to the inner wall of the cylinder seat by bolts.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows.

[0017] This invention sets both the fixed grinding seat and the moving grinding disc as a downwardly tapering structure, with the annular grinding cavity formed between them gradually narrowing from top to bottom. This structure allows the grinding gap borne by the material to gradually decrease during the process of falling under gravity, realizing graded and progressive grinding of the material. It avoids the problem of uneven grinding caused by the material passing through a fixed gap at once in traditional disc grinding. It is suitable for soft and easily deformable materials and can obtain powder products with more concentrated particle size distribution and higher degree of fineness.

[0018] This invention sets up a disturbance module between adjacent grinding tools and uses a linkage mechanism to synchronously drive the corresponding two disturbance rollers to rotate in opposite directions when the moving grinding disc rotates. This creates a dynamic mechanical disturbance between the two disturbance rollers. The two rotating disturbance rollers can actively disperse the material falling from above to both sides, breaking the bridging or clumping phenomenon caused by the material being squeezed and entangled between the grinding tools. This eliminates the grinding dead zone, ensures the continuity of material flow in the grinding chamber, and reduces the risk of jamming and blockage and the frequency of downtime for cleaning.

[0019] This invention generates airflow through an air intake system. This airflow is ultimately ejected from the first and second gaps, forming multiple air curtains that directly act on the material inside the annular grinding chamber. The airflow not only helps to peel off the material adhering to the surface of the agitator roller and grinding blades, but also blows away the residual material accumulated in the groove structure, thus playing a role in online cleaning. At the same time, the airflow accelerates the downward movement of fine materials and can also carry away some of the grinding heat, achieving multiple functions such as preventing jamming, promoting flow, and assisting in heat dissipation. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the drive mechanism structure in this invention; Figure 3 for Figure 1 One of the partial structural cross-sectional schematic diagrams of the structure shown; Figure 4 for Figure 3Enlarged schematic diagram of the structure at point A in the middle; Figure 5 for Figure 1 The second partial cross-sectional view of the structure shown; Figure 6 This is a schematic diagram of a partial internal structure of the material collecting cylinder in this invention; Figure 7 This is a schematic diagram of a partial internal structure of the grinding cylinder in this invention; Figure 8 This is a schematic diagram of the installation of the fixed grinding seat structure in this invention; Figure 9 This is a schematic diagram of a partial external structure of the moving grinding disc in this invention; Figure 10 This is a schematic diagram showing the interaction between the linkage mechanism and the disturbance module structure in this invention; Figure 11 for Figure 10 Another perspective view of the structure shown; Figure 12 for Figure 10 The diagram shows a partial structure. Figure 13 One of the schematic diagrams showing the flow direction of airflow into the annular grinding chamber; Figure 14 Schematic diagram of airflow direction entering the annular grinding chamber (Part 2); Figure 15 This is a schematic diagram of the connection structure at the end of the inlet pipe.

[0021] In the diagram: 01. Annular grinding chamber; 1. Base; 11. Collection cylinder; 111. Discharge port; 12. Grinding cylinder; 13. Feeding cylinder; 2. Fixed grinding seat; 201. Groove structure; 21. Cylinder seat; 22. Bolt; 3. Moving grinding disc; 31. Grinding cutter; 301. Through hole; 302. End cap; 303. Protruding plate; 304. Mounting cavity; 4. Disturbance module; 401. Side groove; 402. Inlet channel; 403. Concave cavity; 404. Annular cavity; 405. Guide hole 406. Inlet pipe; 407. Connecting pipe; 408. Fan module; 409. Heater; 41. Disturbing roller; 42. First gap; 43. Second gap; 5. Support column; 6. Drive mechanism; 61. Motor base; 62. Drive motor; 63. Connecting shaft; 64. Pulley drive assembly; 7. Linkage mechanism; 71. First gear; 72. First helical gear ring; 721. First connecting arm; 73. Second gear; 74. Second helical gear ring; 741. Second connecting arm. Detailed Implementation

[0022] The embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly, where "fixed" means that the devices or elements are connected to each other and their relative positional relationship remains unchanged after connection. The directional terms mentioned in the embodiments of the present invention are only for reference to the directions in the accompanying drawings, and are intended to better and more clearly illustrate and understand the embodiments of the present invention. They are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limitations on the embodiments of the present invention. Example

[0024] Please see Figures 1-15 This invention provides a grinding device for raw materials used in cable production, comprising a base 1, a collecting cylinder 11, a grinding cylinder 12, and a feeding cylinder 13. The collecting cylinder 11 is fixed to the top of the base 1, the grinding cylinder 12 is fixed above the collecting cylinder 11, and the feeding cylinder 13 is fixed above the grinding cylinder 12 and connected to the upstream process. The base 1 is provided with a driving mechanism 6 for driving the rotating grinding disc 3. A fixed grinding seat 2 that gradually narrows downwards is fixed inside the grinding cylinder 12, and several toothed blades are evenly distributed on the inner wall of the fixed grinding seat 2. The rotating grinding disc 3 gradually narrows downwards and is coaxially arranged inside the fixed grinding seat 2. Multiple grinding tools 31 are fixed at intervals on the outer peripheral wall of the rotating grinding disc 3. The grinding tools 31 have an L-shaped structure, with the vertical part of the grinding tool 31 fixed to the outer peripheral wall of the rotating grinding disc 3 and the horizontal part fixed to the bottom of the rotating grinding disc 3. The grinding tools 31 can be fixed by welding, bolt connection (removable), or other methods.

[0025] An annular grinding cavity 01 is formed between the fixed grinding seat 2 and the moving grinding disc 3. The material falls into the annular grinding cavity 01, and the grinding cutter 31 rotates with the moving grinding disc 3, cooperating with the toothed edge on the fixed grinding seat 2 to achieve fine grinding of the material. The diameter of the annular grinding cavity 01 decreases towards the bottom, so that the material is ground with higher precision due to gravity. A disturbance module 4 is provided on the periphery of the moving grinding disc 3 between two adjacent grinding cutters 31. The disturbance module 4 includes two disturbance rollers 41. A linkage mechanism 7 is provided in the moving grinding disc 3 to drive the two disturbance rollers 41 in each disturbance module 4 to rotate in opposite directions when the moving grinding disc 3 rotates, so as to prevent the material from getting stuck between the two grinding cutters 31.

[0026] like Figure 4 , Figure 5 and Figure 6As shown, the moving grinding disc 3 has a mounting cavity 304 and a vertical through hole 301. A support column 5 is fixedly installed on the top of the base 1. The top of the support column 5 passes vertically through the mounting cavity 304 and is rotatably connected to the inner wall of the through hole 301. Side grooves 401 are opened between two adjacent grinding tools 31 on the periphery of the moving grinding disc 3. Two disturbance rollers 41 in each disturbance module 4 are symmetrically rotated and installed in the corresponding side grooves 401, and each disturbance roller 41 is exposed to the outside of the moving grinding disc 3. The disturbance rollers 41 are all inclined and adapted to the shape of the annular grinding cavity 01. The bottom end of each disturbance roller 41 extends through into the mounting cavity 304. The linkage mechanism 7 is located in the mounting cavity 304 and is connected to the bottom end of each disturbance roller 41.

[0027] like Figure 2 , Figure 3 and Figure 4 As shown, the drive mechanism 6 includes a drive motor 62, a hollow support column 5, a connecting shaft 63 rotatably mounted inside the support column 5, a cavity inside the base 1, the top end of the connecting shaft 63 being fixedly connected to the end cap 302 fixed on the top of the moving grinding disc 3, and the bottom end of the connecting shaft 63 extending through into the cavity of the base 1. A motor base 61 is fixed on the top of the base 1 next to the collecting cylinder 11, the drive motor 62 is fixed on the motor base 61, and the output shaft of the drive motor 62 extends through into the cavity of the base 1 and is connected to the bottom end of the connecting shaft 63 via a pulley transmission group 64.

[0028] The pulley drive assembly 64 includes two pulleys (not shown in the figure) and a drive belt (not shown in the figure). One pulley is fixed to the end of the output shaft of the drive motor 62 located in the cavity of the base 1, and the other pulley is fixed to the end of the connecting shaft 63 located in the cavity of the base 1. The drive belt is fitted onto the two pulleys. When the drive motor 62 works, it drives the pulley on its output shaft to rotate. Under the transmission action of the drive belt, it drives the other pulley and the connecting shaft 63 to rotate, thereby providing drive for the rotation of the moving grinding disc 3.

[0029] The working principle of this embodiment is as follows: The material is conveyed from the upstream process to the feeding cylinder 13 and falls to the top of the moving grinding disc 3. As the driving mechanism 6 drives the moving grinding disc 3 to rotate, under the action of centrifugal force, the material at the top of the moving grinding disc 3 is thrown onto the inner wall of the fixed grinding seat 2. The inner wall of the fixed grinding seat 2 is uneven due to the presence of toothed blades. When impacted, it causes the agglomerated material to break up. Under the action of gravity, the material falls into the annular grinding chamber 01. As the moving grinding disc 3 rotates, combined with the cooperation of the grinding cutter 31 and the toothed blades, the material is ground into finer particles. The finer the material is ground as it falls into the annular grinding chamber 01, the higher the fineness of the grinding. Finally, the powder that meets the particle size requirements falls from the bottom of the annular grinding chamber 01 into the collecting cylinder 11. like Figure 2 As shown, a discharge port 111 is provided on the side of the collecting cylinder 11. The discharge port 111 is connected to a pneumatic conveying system (using existing technology, not shown in the figure). When the pneumatic conveying system is working, it draws the ground powder in the collecting cylinder 11 into the conveying pipe and conveys it to the downstream process. During the rotation of the moving grinding disc 3, the linkage mechanism 7 simultaneously drives the two disturbance rollers 41 in each side groove 401 to rotate in opposite directions, as shown in the following directions. Figure 13 As shown by the solid curved arrow in the figure, the disturbance rollers 41 are all exposed to the side of the moving grinding disc 3, which can form a dynamic structure with continuous movement between the two grinding cutters 31. This can break the phenomenon of material bridging between the two grinding cutters 31 and the outer wall of the moving grinding disc 3, and prevent material from getting stuck between the two grinding cutters 31 and forming a grinding dead angle.

[0030] It is worth noting that the two disturbance rollers 41 in the same side groove 401 rotate in opposite directions, which can push the material to both sides, break up the material accumulation in the middle, increase the fluidity of the material in the annular grinding chamber 01, and at the same time, avoid the instantaneous overload caused by material jamming, and also prevent the material from staying for a long time and causing changes in grinding properties. Example

[0031] Please see Figure 7 and Figure 8 The difference between this embodiment and Embodiment 1 is that: The grinding base 2 is composed of multiple arc-shaped plates with evenly distributed toothed edges on their inner surfaces. An annular cylinder seat 21 is fixed on the inner wall of the grinding cylinder 12. Each arc-shaped plate is fixed on the inner wall of the cylinder seat 21 in sequence, and can be assembled into the grinding base 2. On the one hand, designing the grinding base 2 to be composed of multiple arc-shaped plates not only facilitates disassembly and assembly, but also allows for targeted replacement of arc-shaped plates when local toothed edges are damaged or severely worn, without having to replace the entire grinding base 2.

[0032] The cylinder base 21 has multiple mounting holes evenly distributed on it. Each arc-shaped plate has a bolt 22 fixed to the side facing away from the tooth edge. During assembly, the bolts 22 are aligned and passed through the mounting holes, and nuts are screwed onto the bolts 22 from the other side (not tightened, allowing the arc-shaped plates to be adjusted). This continues until all arc-shaped plates are installed. Then, each arc-shaped plate is finely adjusted until it assembles into a single fixed grinding base 2. Finally, each nut is tightened to complete the assembly of the fixed grinding base 2. Furthermore, as... Figure 8 As shown, there is a gap between the grinding cylinder 12 and the cylinder base 21 to allow space for the bolt 22 to pass through the mounting hole and for the nut to be loosened. Example

[0033] Please see Figures 10-12 Based on the aforementioned embodiments, this embodiment provides a detailed explanation of the linkage mechanism 7, as follows: The linkage mechanism 7 includes a first helical gear ring 72, a second helical gear ring 74, a plurality of first gears 71, and a plurality of second gears 73. The bottom end of one of the disturbance rollers 41 of each disturbance module 4 is fixed with a first gear 71, and the bottom end of the other disturbance roller 41 is fixed with a second gear 73. The first gears 71 and the second gears 73 are staggered vertically (the second gears 73 are distributed above the first gears 71). Multiple first connecting arms 721 are fixed in a ring array on the outer wall of the support column 5. The first helical gear ring 72 is fixed at the end of the first connecting arms 721. The first helical gear ring 72 meshes with each of the first gears 71. Multiple second connecting arms 741 are fixed in a ring array on the outer wall of the support column 5. The second helical gear ring 74 is fixed at the end of the second connecting arms 741. The second helical gear ring 74 meshes with each of the second gears 73.

[0034] The teeth on the first helical tooth ring 72 are distributed on the outer periphery of the first helical tooth ring 72, and the teeth on the second helical tooth ring 74 are distributed on the inner edge wall of the second helical tooth ring 74, so that the meshing direction of the first gear 71 and the first helical tooth ring 72 and the meshing direction of the second gear 73 and the second helical tooth ring 74 are opposite, thereby realizing the opposite movement of the two disturbance rollers 41 in the same side groove 401.

[0035] The second helical toothed ring 74 is fixed relative to the support column 5 by the second connecting arm 741, and the first helical toothed ring 72 is fixed relative to the support column 5 by the first connecting arm 721. When the moving grinding disc 3 rotates, the support column 5 does not rotate with the moving grinding disc 3. Therefore, when each disturbance roller 41 rotates with the moving grinding disc 3, there is a meshing transmission between the second helical toothed ring 74 and the second gear 73, and between the first helical toothed ring 72 and the first gear 71. Under the meshing action of the second helical toothed ring 74 and each second gear 73, the disturbance roller 41 on the corresponding side can be driven to rotate. Under the meshing action of the first helical toothed ring 72 and each first gear 71, the disturbance roller 41 on the other side can be driven to rotate in the opposite direction at the same time. Thus, the linkage mechanism 7 provides effective drive for the rotation of the disturbance roller 41.

[0036] The driving source for the rotation of the disturbance roller 41 comes from the relative motion of the first gear 71, the first helical gear ring 72, the second gear 73, and the second helical gear ring 74. This eliminates the need for multiple additional driving modules, reducing driving costs, and ensures that the rotation of the disturbance roller 41 responds synchronously with the rotation of the moving grinding disc 3, resulting in precise timing. Example

[0037] Please see Figure 3 , Figure 4 , Figure 13 and Figure 15 The difference between this embodiment and embodiment 3 is as follows: The grinding equipment for the raw materials of this cable production also includes an air intake system. There is a second gap 43 between the two disturbance rollers 41 in the same disturbance module 4. There is a first gap 42 between the inner walls of both sides of the side groove 401 and the disturbance rollers 41 on the same side. The air intake system is used to supply airflow into each side groove 401 when the moving grinding disc 3 rotates. The airflow can finally be ejected from the first gap 42 and the second gap 43.

[0038] The air intake system includes several inlet channels 402, recesses 403, annular cavities 404, several guide holes 405, and an inlet pipe 406. A recess 403 is formed around the support column 5 on the inner wall of the through hole 301. An annular cavity 404 is formed around the axis of the support column 5. The inlet channels 402, which are all connected to the recesses 403, are provided on the inner wall of the side groove 401. Several guide holes 405 are evenly distributed around the axis of the support column 5. One side of the guide hole 405 is connected to the annular cavity 404, and the other side is connected to the recess 403. Since the inner edge of the recess 403 is open, even if the moving grinding disc 3 rotates continuously, the guide holes 405 on the outer wall of the support column 5 can still guide the airflow into the recess 403. One end of the inlet pipe 406 extends into the collection cylinder 11 and communicates with the annular cavity 404. The other end is connected to the external fan module 408 through the connecting pipe 407.

[0039] When the fan module 408 is working, it filters the external air and supplies it into the connecting pipe 407 and the inlet pipe 406 to form a continuous airflow. The airflow flows into the annular cavity 404 through the inlet pipe 406, and then flows into each side groove 401 through the guide hole 405, the concave cavity 403 and the inlet channel 402 in sequence. Finally, it is ejected into the annular grinding cavity 01 through the first gap 42 and the second gap 43.

[0040] The first slit 42 and the second slit 43 extend along the length of the agitator roller 41, thus enabling the ejection of three curtain-like airflows, such as... Figure 13 As shown by the dotted arrow, the airflow ejected from the second gap 43 and the opposite rotation of the two disturbance rollers 41 complement each other in their effect of moving the material, thereby improving the material peeling ability. The material that has been moved to both sides by the two disturbance rollers 41 falls into the range of the airflow ejected from the first gap 42 and is blown towards the fixed grinding seat 2 by the airflow, further preventing the material from accumulating and getting stuck between the disturbance rollers 41 and the grinding cutter 31.

[0041] Furthermore, a groove structure 201 is formed on the inner wall of the fixed grinding seat 2 between the two toothed blades. Airflow blowing onto the inner wall of the fixed grinding seat 2 can dislodge material stuck in the groove structure 201, preventing the material from becoming stuck within it. Simultaneously, as... Figure 14As shown by the dotted arrow, the airflow blows into the groove structure 201. Due to the obstruction, it can be divided into two streams, one above and one below. The upward airflow blows the large volume material above to float (the upper part is mainly large volume material), reducing accumulation and improving the uniformity of material distribution. The downward airflow blows the small volume material downward, further accelerating the flow of material in the annular grinding chamber 01. On the other hand, the downward airflow flows into the collecting cylinder 11 through the bottom of the annular grinding chamber 01, which can clear the powder accumulated at the bottom of the annular grinding chamber 01 and ensure smoother discharge at the bottom of the annular grinding chamber 01. The airflow entering the collecting cylinder 11 eventually flows into the pneumatic conveying system, complementing the airflow in the pneumatic conveying system and improving the conveying capacity of powder, achieving multiple benefits in one fell swoop.

[0042] The airflow is ejected from the first gap 42 and the second gap 43, forming a back-blowing effect, which can prevent the material from drilling into the depth of the side groove 401 through these gaps. Even if some powder enters, it can be discharged from these gaps under the continuous blowing action of the airflow. Example

[0043] Please see Figure 15 The difference between this embodiment and embodiment 4 is that: A heater 409 is also installed on the connecting pipe 407. The heater 409 is electrically heated. When the material has high moisture content, the heater 409 is powered on to heat the airflow. The heated airflow enters the annular grinding chamber 01 and dries the material. The airflow is in direct contact with the material, resulting in good drying effect. The air inlet system can not only improve the flowability and uniformity of the material in the annular grinding chamber 01, but also dry the material in conjunction with the heater 409. Both functions share the same piping system.

[0044] When there is no need to dry the material (or when the material with low moisture content can be dried by relying on the heat generated by grinding), the heating element in the heater 409 can be stopped. At this time, the pipes in the heater 409 remain unobstructed, allowing the airflow to flow normally. Meanwhile, the airflow flowing into the annular grinding chamber 01 from the first gap 42 and the second gap 43 not only accelerates heat transfer and facilitates the drying of the material, but also cools the material from excessive heat generated by grinding. When the heater 409 is working to dry the material, the flowing airflow can also carry away the heat generated by grinding, thus achieving the effect of heat dissipation. Example

[0045] Please see Figure 1 , Figure 5 and Figure 7 The difference between this embodiment and embodiment 5 is that: The feeding cylinder 13 is funnel-shaped with a smaller top and a larger bottom, and the feeding cylinder 13 is coaxial with the end cap 302. Several protruding plates 303 are fixed at intervals around the end cap 302 on the top of the moving grinding disc 3, and each protruding plate 303 extends radially along the moving grinding disc 3. A throwing channel is formed between two adjacent protruding plates 303. The material fed by the feeding cylinder 13 can land on the end cap 302. The end cap 302 rotates synchronously with the moving grinding disc 3, which can centrifugally throw the material into each throwing channel. As the moving grinding disc 3 rotates, the material moves towards the fixed grinding seat 2 in each throwing channel and finally hits the inner wall of the fixed grinding seat 2. The protruding plates 303 can separate and distribute the material evenly, prevent excessive accumulation of material in some areas, and further improve the uniformity of material distribution.

[0046] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Therefore, the present invention will not explain the control method and circuit connection in detail.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

Claims

1. A grinding device for cable production raw materials, comprising a feeding cylinder (13), a grinding cylinder (12), and a collecting cylinder (11) fixedly connected from top to bottom, the collecting cylinder (11) being fixed to the top of a base (1), and a driving mechanism (6) for driving the rotating grinding disc (3) to rotate on the base (1), characterized in that: The grinding cylinder (12) is fixed with a downwardly tapering fixed grinding seat (2), and several toothed blades are evenly distributed on the inner wall of the fixed grinding seat (2). The moving grinding disc (3) gradually shrinks downward and is coaxially arranged in the fixed grinding seat (2). Multiple grinding tools (31) are fixed at intervals on the outer peripheral wall of the moving grinding disc (3). An annular grinding cavity (01) is formed between the fixed grinding seat (2) and the moving grinding disc (3), and the diameter of the annular grinding cavity (01) decreases as it goes downwards; The moving grinding disc (3) is provided with disturbance modules (4) on its periphery between two adjacent grinding tools (31), and the disturbance modules (4) include two disturbance rollers (41). The moving grinding disc (3) is provided with a linkage mechanism (7) for simultaneously driving the two disturbance rollers (41) in each disturbance module (4) to rotate in opposite directions when the moving grinding disc (3) rotates, so as to prevent the material from getting stuck between the two grinding cutters (31). The moving grinding disc (3) has an installation cavity (304) and a vertical through hole (301) is provided in the moving grinding disc (3). A support column (5) is fixedly installed on the top of the base (1). The top of the support column (5) passes vertically through the mounting cavity (304) and is rotatably connected to the inner wall of the through hole (301); The moving grinding disc (3) has side grooves (401) on its periphery between two adjacent grinding tools (31), and the two disturbance rollers (41) in each disturbance module (4) are symmetrically rotated and installed in the corresponding side grooves (401). The disturbance rollers (41) are all inclined and adapted to the movement of the annular grinding cavity (01), and each disturbance roller (41) is exposed to the outside of the moving grinding disc (3). The bottom end of each of the disturbance rollers (41) extends through into the mounting cavity (304); The linkage mechanism (7) is located in the mounting cavity (304) and is connected to the bottom end of each of the disturbance rollers (41) in a transmission manner. The linkage mechanism (7) includes a first helical gear ring (72), a second helical gear ring (74), a plurality of first gears (71) and a plurality of second gears (73). The bottom end of one of the disturbance rollers (41) of each disturbance module (4) is fixed with the first gear (71), and the bottom end of the other disturbance roller (41) is fixed with the second gear (73), and the first gear (71) and the second gear (73) are staggered vertically. A first helical toothed ring (72) is fixed on the outer wall of the support column (5) via a first connecting arm (721), and the first helical toothed ring (72) meshes with each of the first gears (71); A second helical toothed ring (74) is fixed on the outer wall of the support column (5) by a second connecting arm (741), and the second helical toothed ring (74) meshes with each of the second gears (73); The teeth on the first helical tooth ring (72) are distributed on the outer periphery of the first helical tooth ring (72); The teeth on the second helical tooth ring (74) are distributed on the inner edge wall of the second helical tooth ring (74).

2. The grinding equipment for cable production raw materials according to claim 1, characterized in that: The drive mechanism (6) includes a drive motor (62); The support column (5) is a hollow body, and a connecting shaft (63) is rotatably installed inside the support column (5). The base (1) has a cavity. The top end of the connecting shaft (63) is fixedly connected to the end cap (302) fixed on the top of the moving grinding disc (3), and the bottom end of the connecting shaft (63) extends through into the cavity of the base (1). The drive motor (62) is fixed to the top of the base (1) by a motor mount (61); The output shaft of the drive motor (62) extends through the cavity of the base (1) and is connected to the bottom end of the connecting shaft (63) via a pulley drive assembly (64).

3. The grinding equipment for cable production raw materials according to claim 1, characterized in that: It also includes the air intake system; There is a second gap (43) between the two disturbance rollers (41) in the same disturbance module (4), and there is a first gap (42) between the inner walls on both sides of the side groove (401) and the disturbance roller (41) on the same side. The air intake system is used to supply airflow into each side groove (401) when the moving grinding disc (3) rotates, and the airflow can eventually be ejected from the first gap (42) and the second gap (43).

4. The grinding equipment for cable production raw materials according to claim 3, characterized in that: The air intake system includes several inlet channels (402), a cavity (403), an annular cavity (404), several guide holes (405), and an inlet pipe (406). The cavity (403) is formed on the inner wall of the insertion hole (301) around the support column (5), and the annular cavity (404) is formed in the support column (5) around its axis. The inner wall of the side groove (401) is provided with the inlet channel (402) which is connected to the cavity (403). The outer wall of the support column (5) is evenly distributed with several flow guide holes (405) around its axis. The flow guide hole (405) is connected to the annular cavity (404) on one side and to the concave cavity (403) on the other side; One end of the inlet pipe (406) extends into the collection cylinder (11) and communicates with the annular cavity (404), while the other end is connected to the external fan module (408) through the connecting pipe (407).

5. The grinding equipment for cable production raw materials according to claim 4, characterized in that: A heater (409) is installed on the connecting pipe (407).

6. The grinding equipment for cable production raw materials according to claim 2, characterized in that: The material fed through the feeding cylinder (13) can be aligned and fall onto the end cap (302); The top of the moving grinding disc (3) is fixed with several protruding plates (303) at intervals around the end cap (302), and each protruding plate (303) extends radially along the moving grinding disc (3).

7. The grinding equipment for cable production raw materials according to claim 1, characterized in that: The fixed grinding seat (2) is assembled from multiple arc-shaped plates with evenly distributed toothed blades on their inner surfaces; The grinding cylinder (12) has an annular cylinder seat (21) fixed inside. Each arc plate is fixed to the inner wall of the cylinder seat (21) by bolts (22).

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