Grinding device and grinding machine

Abstract

The present invention relates to the field of grinding technology, and more particularly to a grinding device and a grinder, comprising a housing, a rotating mechanism, a grinding mechanism for grinding materials, and a separating mechanism for separating materials and grinding media, wherein the grinding mechanism and the separating mechanism are both arranged in the housing, and the rotating mechanism is used to drive the grinding mechanism and the separating mechanism to rotate; a screening and grinding area is arranged between the grinding mechanism and the separating mechanism, and the screening and grinding area is used to distribute the grinding media. The present invention provides a screening and grinding area between the grinding device and the separating mechanism, and the screening and grinding area is provided with grinding media distributed therein, and the grinding device will not drive the grinding media in the screening and grinding area to move rapidly during rotation and grinding. Therefore, when the ground material enters the screening and grinding area, the screening and grinding area can effectively intercept the part of the material that is not fully ground and re-grind it, and at the same time, the part that is fully ground can pass directly without being over-ground because the grinding media in this part will not move at high speed, thereby achieving the effect of protecting the material.

Description

Technical Field

[0001] The present invention relates to the field of grinding technology, in particular to a grinding device and a grinding machine. Background Art

[0002] The grinder mixes the grinding medium with the material, and then stirs it to make the grinding medium and the material collide, so that the material is dispersed after multiple collisions until the size of the material reaches the required size. After a period of grinding, some materials will still not meet the requirements due to sufficient grinding. At this time, this part of the material needs to be ground again before it can be output. However, some existing grinders are unable to intercept and fully grind the insufficiently ground materials, and even if some can fully grind, they will also grind the fully ground materials, causing the fully ground materials to be over-grinded. Obviously, these two types of grinders cannot guarantee that all materials are ground to the required size, that is, they cannot guarantee that the quality of the output materials can meet the requirements. Summary of the invention

[0003] The present invention aims at solving the problems in the prior art and provides a grinding device and a grinding machine, which can screen out fully ground materials and grind insufficiently ground materials again.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] The present invention provides a grinding device, comprising a housing, a rotating mechanism, a grinding mechanism for grinding materials, and a separation mechanism for separating materials and grinding media, wherein the grinding mechanism and the separation mechanism are both arranged in the housing, and the rotating mechanism is used to drive the grinding mechanism and the separation mechanism to rotate;

[0006] A screening and grinding area is provided between the grinding mechanism and the separation mechanism, and the screening and grinding area is used for distributing grinding media.

[0007] Furthermore, the grinding mechanism includes a variable speed grinding mechanism and a plurality of high-speed grinding mechanisms, and the variable speed grinding mechanism is located between the separation mechanism and the high-speed grinding mechanism located at the top; the high-speed grinding mechanism includes two first grinding discs and a plurality of first connecting ribs, the two first grinding discs are arranged opposite to each other, and an air layer is left between the two first grinding discs, the plurality of first connecting ribs are all arranged in the air layer, and the two first grinding discs are connected by the plurality of first connecting ribs; the first grinding disc is provided with a plurality of first circulation holes passing through the first grinding disc.

[0008] Furthermore, the side walls of the two disks are both smooth curved surfaces.

[0009] Furthermore, the variable speed grinding mechanism includes a second grinding disc, a baffle plate and a plurality of second connecting ribs, the second grinding disc is located above the baffle plate, the second grinding disc and the baffle plate are spaced apart, and the second grinding disc and the baffle plate are connected via a plurality of second connecting ribs; the second grinding disc is provided with a plurality of second circulation holes penetrating through the two end surfaces of the second grinding disc.

[0010] Furthermore, the high-speed grinding mechanism further comprises a sleeve and a mounting hole for assembling the rotating shaft, the two ends of the sleeve are respectively connected to the two disc bodies, and the mounting hole penetrates the two disc bodies and the sleeve;

[0011] The shaft sleeve is also provided with a positioning groove, and the positioning groove is connected to one side of the mounting hole.

[0012] Furthermore, the separation mechanism includes a top cover, a bottom cover, a kit and a plurality of wing pieces, wherein the top cover and the bottom cover are respectively mounted at two ends of the kit, and the plurality of wing pieces are mounted between the top cover and the bottom cover, and the plurality of wing pieces are all located at the periphery of the kit, with a gap being left between each two adjacent wing pieces.

[0013] Furthermore, the bottom of the top cover is provided with a plurality of first grooves, the top of the bottom cover is provided with a plurality of second grooves, the plurality of first grooves and the plurality of second grooves are arranged opposite to each other, and the two ends of the wing are respectively mounted on the first groove and the second groove.

[0014] Furthermore, the kit is provided with a through hole, and the through hole is used to assemble the rotating shaft; the side walls of the through hole are respectively connected with a plurality of side holes, and the side holes are used to allow the material passing through the gap to enter the rotating shaft.

[0015] Furthermore, every two adjacent wing pieces are arranged at an acute angle.

[0016] The present invention also provides a grinder, comprising a machine body, wherein the machine body is provided with a feeding device and a grinding device, wherein the grinding device is the above-mentioned grinding device, the feeding device is connected to the bottom of the grinding device, and the top of the grinding device is provided with a discharge port for discharging materials.

[0017] Beneficial effects of the present invention: The present invention provides a screening and grinding area between the grinding device and the separation mechanism. Since the screening and grinding area is distributed with grinding media, and the grinding device will not drive the grinding media in the screening and grinding area to move quickly when rotating and grinding, when the ground material enters the screening and grinding area, the screening and grinding area can effectively intercept the part of the material that is not fully ground and re-grind it. At the same time, the part that is fully ground can pass directly without being over-ground because the grinding media in this part will not move at high speed, thereby achieving the effect of protecting the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the present invention.

[0019] Figure 2 It is a schematic diagram of the high-speed grinding mechanism of the present invention.

[0020] Figure 3 It is a cross-sectional view of the separation mechanism of the present invention.

[0021] Figure 4 for Figure 3 Schematic diagram of direction A.

[0022] Figure markings: 1-shell, 2-rotating shaft, 3-grinding mechanism, 4-separating mechanism, 5-screening and grinding area, 6-grinding medium, 11-feed port, 12-discharge port, 21-discharge channel, 31-variable speed grinding mechanism, 32-high-speed grinding mechanism, 41-top cover, 42-bottom cover, 43-kit, 44-wing, 45-gap, 311-second grinding disc, 312-blocking disc, 313-rotating shaft sleeve, 314-second circulation hole, 321-first grinding disc, 322-first connecting rib, 323-isolation layer, 324-first circulation hole, 325-shaft sleeve, 326-mounting hole, 327-positioning groove, 411-first groove, 421-second groove, 431-through hole, 432-side hole. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with the embodiments and drawings, and the contents mentioned in the embodiments are not intended to limit the present invention. The present invention is described in detail below in conjunction with the drawings.

[0024] like Figures 1 to 4 As shown, a grinding device provided by the present invention comprises a housing 1, a rotating mechanism (not marked in the figure), a grinding mechanism 3 for grinding materials, and a separation mechanism 4 for separating materials and grinding media 6, wherein the grinding mechanism 3 and the separation mechanism 4 are both arranged in the housing 1, and the rotating mechanism is used to drive the grinding mechanism 3 and the separation mechanism 4 to rotate;

[0025] A screening and grinding area 5 is provided between the grinding mechanism 3 and the separation mechanism 4 , and the screening and grinding area 5 is used for distributing grinding media 6 .

[0026] The present invention does not fully show the structure of the entire rotating mechanism, which is generally composed of a motor, a transmission belt transmission mechanism and a rotating shaft 2, so as to drive the separation mechanism 4 and the grinding mechanism 3 to rotate and generate centrifugal force, so that the material and the grinding medium 6 can fully collide to achieve grinding. Figure 1 Only the grinding media 6 in the screening and grinding area 5 and the grinding media 6 near the grinding device are marked, but actually the grinding media 6 are present in the entire housing 1 .

[0027] The present invention is set in a grinder, mainly used in a vertical grinder, a feed port 11 is set at the bottom of the housing 1, a discharge port 12 is set at the top, the rotating shaft 2 is a hollow structure, and the hollow mechanism is a discharge channel 21 for allowing the material to flow through the rotating shaft 2 to the discharge port 12 for discharge. During operation, the material is input through the feed device of the grinder, and then the material enters the housing 1 through the feed port 11 under the drive of the feed device, and then the rotating mechanism drives the grinding mechanism 3 and the separation mechanism 4 to rotate simultaneously, and in the process of the material moving from bottom to top, the grinding mechanism 3 rotates and drives the grinding medium 6 to move quickly with the material and collide with each other, thereby achieving the grinding effect; after the material passes through the grinding mechanism 3, it enters the screening and grinding area 5, because the grinding media 6 are distributed in the screening and grinding area 5, the grinding media 6 there are not driven by the grinding mechanism 3 to move at a high speed, so the grinding media 6 in the screening and grinding area 5 is only driven to move by the material and the grinding media 6 mixed in the material. That is, the grinding media 6 in the screening and grinding area 5 have the characteristics of high density and slow movement speed, so that when the material passes through here, the material that is not fully ground is continuously ground by the grinding media 6 in the screening and grinding area 5 due to its large volume until it is ground to a suitable size, while the material with the required volume can be ground as little as possible and pass through the screening and grinding area 5, thereby avoiding the occurrence of over-grinding. The present invention can ensure that all materials are fully ground by setting the screening and grinding area 5, and avoid over-grinding of the fully ground materials, which affects the quality of the materials.

[0028] In this embodiment, the grinding mechanism 3 includes a variable speed grinding mechanism 31 and a plurality of high speed grinding mechanisms 32, wherein the variable speed grinding mechanism 31 is located between the separation mechanism 4 and the high speed grinding mechanism 32 located at the top. The high speed grinding mechanism 32 is used to perform high speed circulation grinding of the material to improve the grinding efficiency, while the variable speed grinding mechanism 31 is used to form a screening and grinding area 5 between the separation mechanism 4 to prevent the high speed grinding from affecting the effect of the screening and grinding area 5.

[0029] Specifically, the high-speed grinding mechanism 32 includes two first grinding discs 321 and a plurality of first connecting ribs 322. The two first grinding discs 321 are arranged opposite to each other, and an isolation layer 323 is left between the two first grinding discs 321. The plurality of first connecting ribs 322 are all arranged in the isolation layer 323. The two first grinding discs 321 are connected by the plurality of first connecting ribs 322. The first grinding disc 321 is provided with a plurality of first circulation holes 324 that penetrate the first grinding disc 321.

[0030] In actual use, the high-speed grinding mechanism 32 further includes a sleeve 325 and a mounting hole 326 for assembling the rotating shaft 2, the two ends of the sleeve 325 are respectively connected to the two discs, and the mounting hole 326 runs through the two discs and the sleeve 325. The number of high-speed grinding mechanisms 32 is preferably three or more.

[0031] That is to say, an air layer 323 is left between the two first grinding discs 321. When the high-speed grinding mechanism 32 rotates, under the action of centrifugal force, the material and the grinding medium 6 are driven to circulate continuously around the periphery of the high-speed grinding mechanism 32, the first circulation hole 324 and the air layer 323, and a speed difference is formed by the contraction flow to generate shear force, thereby generating shear force for dispersion; since the rotating shaft 2 of the rotating mechanism drives the high-speed grinding mechanism 32 to rotate at a very high speed, it brings about high-speed circulation of the material and the grinding medium 6, increases the efficiency and intensity of grinding, and makes the grinding more complete.

[0032] Preferably, no protrusions are provided on the end surfaces of the two first grinding discs 321 , that is, the side walls of the two discs are smooth curved surfaces, which can reduce the wear caused by the collision between the material and the grinding medium 6 .

[0033] Preferably, the shaft sleeve 325 is further provided with a positioning groove 327, and the positioning groove 327 is connected to one side of the mounting hole 326. That is, the side wall of the rotating shaft 2 is preferably also provided with a corresponding positioning block (not shown in the figure), which is used to be assembled in the positioning groove 327 to achieve positioning, thereby ensuring the synchronization of the rotation angular velocity of the rotating shaft 2 and the high-speed grinding mechanism 32.

[0034] Specifically, the variable speed grinding mechanism 31 includes a second grinding disc 311, a baffle 312 and a plurality of second connecting ribs (not shown in the figure), the second grinding disc 311 is located above the baffle 312, the second grinding disc 311 and the baffle 312 are arranged at intervals, and the second grinding disc 311 and the baffle 312 are connected via a plurality of second connecting ribs; the second grinding disc 311 is provided with a plurality of second circulation holes 314 that penetrate through the two end surfaces of the second grinding disc 311. The structure of the second connecting ribs can refer to the structure of the first connecting ribs 322, and the variable speed grinding mechanism 31 also includes a rotating shaft sleeve 313, and the second grinding disc 311 and the baffle 312 are both arranged on the rotating shaft sleeve 313. The connection mode of the rotating shaft sleeve 313, the second grinding disc 311 and the baffle 312 can refer to the connection mode between the sleeve 325 and the two first grinding discs 321, and will not be repeated here.

[0035] That is, after passing through the high-speed grinding mechanism 32, the material will move to the variable speed grinding mechanism 31, and the second grinding disc 311 will grind in the same way as the first grinding disc 321, while the baffle 312 is used to block between the high-speed grinding area and the screening area 5, ensuring that the screening area 5 is an area where the grinding medium 6 moves slowly, ensuring the density of the grinding medium 6, so that the material that is not fully ground can be fully ground after entering this area.

[0036] In this embodiment, the separation mechanism 4 includes a top cover 41, a bottom cover 42, a set 43 and a plurality of fins 44, the top cover 41 and the bottom cover 42 are respectively installed at the two ends of the set 43, the plurality of fins 44 are installed between the top cover 41 and the bottom cover 42, the plurality of fins 44 are all located at the periphery of the set 43, and a gap 45 is left between each adjacent two fins 44. That is, compared with the existing separator (generally a screen-type separator), the present invention adopts a screen composed of a plurality of fins 44, that is, when the separation mechanism 4 rotates at a high speed, the centrifugal force is small due to the small mass of the unit material; and the grinding medium 6 with a larger mass is thrown away from the separation mechanism 4 due to the large centrifugal force, so that the material can smoothly enter the separation mechanism 4 to achieve separation. Since the separation mechanism 4 of the present invention is not a screen, and the width between the fins 44 is larger than that of the separator, it has the advantage of a large flow rate, that is, no blockage occurs, which reduces the number of maintenance times, and increases the working efficiency of the present invention.

[0037] Specifically, a plurality of first grooves 411 are provided at the bottom of the top cover 41, and a plurality of second grooves 421 are provided at the top of the bottom cover 42. The plurality of first grooves 411 and the plurality of second grooves 421 are arranged opposite to each other, and both ends of the wing 44 are respectively mounted on the first groove 411 and the second groove 421.

[0038] That is, when assembling the present invention, first fix the bottom cover 42 and the shaft sleeve 325, then insert the fin 44 into the second groove 421, and finally cover the top cover 41 so that the first groove 411 is sleeved on the top of the fin 44, so as to achieve installation. The fin 44 is assembled by using the structure of the first groove 411 and the second groove 421, which not only ensures the stability of the position of the fin 44, but also facilitates timely replacement when a fin 44 is damaged, thereby reducing the time required for replacement.

[0039] Specifically, the kit 43 is provided with a through hole 431, and the through hole 431 is used to assemble the rotating shaft 2; the side walls of the through hole 431 are respectively connected with a plurality of side holes 432, such as three side holes 432 in this embodiment, and the side holes 432 are used to allow the material passing through the gap to enter the rotating shaft 2. That is, after passing through the gap 45, the material enters the inside of the rotating shaft 2 located in the through hole 431 through the side hole 432, and is output to the external storage tank through the inside of the rotating shaft 2 for storage.

[0040] Specifically, each two adjacent wings 44 are arranged at an acute angle, that is, the top view of the gap 45 is an acute angle, so that the width of the gap 45 becomes smaller and smaller from the outside to the inside, thereby ensuring that the relatively large grinding medium 6 will not pass through the gap 45 and affect the purity of the output material, thereby ensuring the separation effect. Figure 4 As shown, the acute angle of the gap 45 points in a direction substantially the same as the rotation direction of the present invention, thereby achieving a better separation effect.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention is disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes by using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent changes and modifications made to the above embodiments according to the technology of the present invention are within the scope of the technical solution of the present invention without departing from the content of the technical solution of the present invention.

Claims

1. A grinding device, characterized in that: It comprises a shell, a rotating mechanism, a grinding mechanism for grinding materials, and a separation mechanism for separating materials and grinding media, wherein the grinding mechanism and the separation mechanism are both arranged in the shell, and the rotating mechanism is used to drive the grinding mechanism and the separation mechanism to rotate; A screening and grinding area is provided between the grinding mechanism and the separation mechanism, and the screening and grinding area is used for distributing the grinding media; A feed port is provided at the bottom of the shell, and a discharge port is provided at the top. The rotating shaft is a hollow structure inside. The hollow mechanism is a discharge channel for allowing the material to flow through the rotating shaft to the discharge port for discharge. During operation, the material is input through the feed device of the grinder, and then the material is driven by the feed device to enter the shell through the feed port, and then the rotating mechanism drives the grinding mechanism and the separation mechanism to rotate simultaneously. During the process of the material moving from bottom to top, the grinding mechanism rotates to drive the grinding medium and the material to move rapidly and collide with each other. After the material passes through the grinding mechanism, it enters the screening and grinding area, where grinding media are distributed. The grinding media in this area are not driven by the grinding mechanism to move at high speed. The grinding media in the screening and grinding area are only driven to move by the movement of the material and the grinding media mixed in the material. The grinding mechanism includes a variable speed grinding mechanism and a plurality of high-speed grinding mechanisms, wherein the variable speed grinding mechanism is located between the separation mechanism and the high-speed grinding mechanism located at the top; the high-speed grinding mechanism includes two first grinding discs and a plurality of first connecting ribs, wherein the two first grinding discs are arranged opposite to each other, an air layer is left between the two first grinding discs, the plurality of first connecting ribs are arranged in the air layer, and the two first grinding discs are connected by the plurality of first connecting ribs; the first grinding disc is provided with a plurality of first circulation holes penetrating the first grinding disc; The high-speed grinding mechanism is used to grind the material in a high-speed cycle, and the variable-speed grinding mechanism is used to form a screening and grinding area between the separation mechanism; The high-speed grinding mechanism also includes a sleeve and a mounting hole for assembling the rotating shaft, the two ends of the sleeve are respectively connected to the two disc bodies, and the mounting hole runs through the two disc bodies and the sleeve; When the high-speed grinding mechanism rotates, under the action of centrifugal force, the material and grinding media are driven to circulate continuously around the periphery of the high-speed grinding mechanism, the first circulation hole and the air barrier layer, and the shear force is generated by the speed difference formed by the contraction flow, thereby generating shear force for dispersion; The shaft sleeve is also provided with a positioning groove, which is connected to one side of the mounting hole; the side wall of the rotating shaft is provided with a positioning block, which is used to be assembled in the positioning groove; The side walls of the two disks are smooth curved surfaces; The variable speed grinding mechanism comprises a second grinding disc, a baffle and a plurality of second connecting ribs, wherein the second grinding disc is located below the baffle, the second grinding disc and the baffle are spaced apart, and the second grinding disc and the baffle are connected via a plurality of second connecting ribs; the second grinding disc is provided with a plurality of second circulation holes penetrating through two end surfaces of the second grinding disc; The separation mechanism comprises a top cover, a bottom cover, a set and a plurality of fins, wherein the top cover and the bottom cover are respectively mounted at two ends of the set, and the plurality of fins are mounted between the top cover and the bottom cover, and the plurality of fins are all located at the periphery of the set, and a gap is left between each two adjacent fins; The bottom of the top cover is provided with a plurality of first grooves, the top of the bottom cover is provided with a plurality of second grooves, the plurality of first grooves and the plurality of second grooves are arranged opposite to each other, and the two ends of the wing are respectively mounted in the first groove and the second groove; During assembly, first fix the bottom cover and the shaft sleeve, then insert the wing into the second groove, and finally cover the top cover so that the first groove is placed on the top of the wing to achieve installation; Every two adjacent fins are arranged at an acute angle; that is, the top view of the gap is an acute angle, so that the width of the gap becomes smaller from the outside to the inside; The kit is provided with a through hole through it, and the through hole is used to assemble the rotating shaft; the side walls of the through hole are respectively connected with a plurality of side holes, and the side holes are used to allow the material passing through the gap to enter the rotating shaft.

2. A grinding machine, comprising a machine body, wherein the machine body is provided with a feeding device and a grinding device, characterized in that: The grinding device is the grinding device according to claim 1, the feeding device is connected to the bottom of the grinding device, and the top of the grinding device is provided with a discharge port for discharging materials.

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