Vertical matte grinding machine

Abstract

The invention provides a vertical matte grinding machine which comprises a vertical machine shell, a grinding barrel is fixedly installed at the bottom in the machine shell, the grinding barrel is provided with an inner bottom face, and the machine shell is further connected with a feeding pipe for guiding materials into the grinding barrel. A mounting frame is rotationally mounted in the machine shell, a plurality of grinding rollers are connected to the mounting frame, the roller surfaces of all the grinding rollers are in rolling contact with the inner wall of the grinding barrel, and an air inlet channel for supplying hot air into the grinding barrel is further formed in the machine shell; a separator is arranged on the inner top face of the machine shell, a separator driving motor for driving the separator is further arranged above the outer portion of the machine shell, and a discharging pipe connected with the separator is further arranged on the machine shell. A material receiving disc is further arranged in the machine shell, a grinding disc rotating relative to the material receiving disc is rotationally arranged in the material receiving disc, a grinding gap is formed between the grinding disc and the material receiving disc, and a communicating channel is further formed in the bottom in the material receiving disc. The problems of low grinding efficiency, long total consumed time and high equipment energy consumption caused by secondary grinding of materials in the prior art are solved.

Description

Technical Field

[0001] The invention relates to the technical field of matte processing equipment, in particular to a vertical matte grinding machine. Background Art

[0002] During the harmless treatment of copper-containing hazardous waste, crude copper can be extracted, and matte copper (copper content is between 20% and 70%) is also produced. When processing matte copper, it is usually crushed first and then introduced into a circulating grinding system for grinding. The circulating grinding system generally includes a grinder, a hot air blower that supplies hot air to the grinder, a cyclone material tank connected to the grinder to output the airflow, and a dust removal system connected to the cyclone material tank. The cyclone material tank is also connected to the hot air blower to form a circulating air system (grinder-cyclone material tank-hot air blower). The qualified ground materials are collected by the cyclone material tank, and the dust-containing residual air is discharged after being treated by the dust removal system. Among them, the grinding machine can generally use Raymond mill. Raymond mill uses a plum blossom frame (mounting frame) to connect the grinding roller. The driving motor drives the plum blossom frame to rotate so that the grinding roller revolves. At the same time, a grinding cylinder is set inside. During the revolution of the grinding roller, it contacts and rolls with the inner wall of the grinding cylinder. The material is ground between the grinding cylinder and the grinding roller. The bottom is provided with an air duct to supply hot air, and the top is provided with a separator. The ground material goes up with the hot air. After passing through the separator, the qualified particle size material leaves from the discharge pipe, and the unqualified (larger particle size) falls down into the grinding cylinder for further grinding. There is also a scraper at the bottom, which rotates with the plum blossom frame to scoop up the material at the bottom, and cooperates with the hot air to make the material smoothly go between the grinding roller and the grinding cylinder. In the specific process, a large part of the matte material will fall down again for secondary grinding, which leads to a decrease in the overall grinding efficiency, a long grinding time, and a corresponding increase in the energy consumption of the equipment. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a vertical matte grinding machine, which solves the problems in the prior art that the material needs to be ground twice, resulting in low grinding efficiency, long overall time consumption, and high equipment energy consumption.

[0004] According to an embodiment of the present invention, a vertical matte grinding machine comprises a vertical casing, a grinding drum is fixedly installed at the bottom of the casing, the grinding drum has an inner bottom surface, and a feed pipe for introducing materials into the grinding drum is connected to the casing; a mounting frame is rotatably installed in the casing, a plurality of grinding rollers are connected to the mounting frame, and the roller surfaces of all the grinding rollers are in rolling contact with the inner wall of the grinding drum respectively, and an air inlet duct for supplying hot air into the grinding drum is also arranged on the casing; the mounting frame comprises a main shaft, and a driving main shaft is also arranged at the lower part outside the casing to rotate so that all the grinding rollers are rotated. A main shaft driving motor revolves around the center of the circle where the grinding roller is located; a separator is arranged on the top surface of the casing, and a separator driving motor for driving the separator is also arranged on the upper part outside the casing, and a discharge pipe connected with the separator is also arranged on the casing; a receiving tray is also arranged in the casing, and the separator has a vertical projection located in the receiving tray, and a grinding disc that rotates relative to the receiving tray is rotatably arranged in the receiving tray, a grinding gap is arranged between the grinding disc and the receiving tray, and a connecting channel connecting the bottom thereof and the grinding gap is also arranged at the bottom of the receiving tray.

[0005] In the above embodiment, after being ground between the grinding cylinder and the grinding roller, the material moves upward with the hot air and is separated at the separator. The qualified material enters the equipment at the rear from the discharge pipe through the separator, and the unqualified material falls downward to the receiving plate below. In the receiving plate, the grinding disc and the receiving plate grind this part of the material again. During the process, the hot air from the connecting channel enters from below and then drives the ground material upward to the separator again. This avoids a large amount of material falling down for secondary grinding between the grinding cylinder and the grinding roller. Therefore, the grinding efficiency is improved, and the grinding time can be reduced accordingly. The problem of low grinding efficiency, long overall time consumption and high equipment energy consumption caused by the need for secondary grinding of materials in the prior art is solved.

[0006] Furthermore, the diameter of the circle where the lower end of the inner wall of the grinding cylinder is located is smaller than the diameter of the circle where the upper end is located, the grinding roller is in rolling contact with the upper part of the inner wall of the grinding cylinder, the air inlet duct obliquely passes through the grinding cylinder and the lower end opening is located below the grinding roller, and an air intake shell is fixedly surrounded on the casing, the air intake shell is provided with an air inlet, and the higher end of the air inlet duct is connected to the air intake shell.

[0007] Furthermore, the mounting frame also includes a plurality of cantilevers fixedly connected to the main shaft and equidistantly arranged around it. Each grinding roller is connected to one of the cantilevers via a connecting rod. The cantilever is also fixedly connected to a vertical rod extending downward, and the lower end of the vertical rod is also fixedly connected to a scraper located in the grinding cylinder.

[0008] Furthermore, the receiving tray is also fixedly connected to a distributing tray located below it and above the mounting frame, and the distributing tray is provided with a plurality of notches surrounding the main shaft.

[0009] Furthermore, the outer edge of the material distribution plate is fixedly connected to the inner wall of the casing, and the main shaft rotates through the material receiving plate and is fixedly connected to the grinding plate.

[0010] Furthermore, the material distribution plate is separated from the inner wall of the casing and fixedly connected to the main shaft, the separator driving motor is connected to the separator driving shaft, and the separator driving shaft extends to the bottom of the separator and is fixedly connected to the grinding plate.

[0011] Furthermore, a sliding ring is fixedly connected to the inner wall of the casing, and an annular supporting inclined surface is provided at the lower end of the sliding ring extending inward, and the outer edge of the distribution plate is in sliding contact with the annular supporting inclined surface.

[0012] Further, the connecting channel includes a plurality of channels surrounding the main shaft.

[0013] Furthermore, the connecting channel includes an upper channel connected to the center of the receiving tray and a plurality of lower channels connected to the upper channel, and the lower channels are connected to the space below the receiving tray.

[0014] Furthermore, an inner convex portion is provided in the middle of the inner bottom of the grinding cylinder, which protrudes upward and allows the main shaft to rotate through the inner convex portion. The inner convex portion is also provided with an annular inclined surface at its lower end, and the lower side of the annular inclined surface extends outward, and the scraper contacts the annular inclined surface.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] Grinding is carried out at the bottom of the casing, and the material moves upward with the hot air and is separated by the separator. Qualified material enters the next equipment through the discharge pipe, and unqualified material is returned to the receiving tray for re-grinding, which will not affect the material falling below, avoiding increasing the grinding load of the grinding roller. Grinding is carried out simultaneously up and down, which can shorten the overall time and reduce the grinding energy consumption accordingly. Therefore, the problem of low grinding efficiency, long overall time and high equipment energy consumption caused by the need for secondary grinding of materials in the prior art is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the embodiment of the present invention is shown in FIG. Figure 1 (The arrow indicates the direction of hot air);

[0018] Figure 2 The overall structure of the embodiment of the present invention is shown in FIG. Figure 2 (The arrow indicates the direction of hot air);

[0019] Figure 3 The overall structure of the embodiment of the present invention is shown in FIG. Figure 2 (The arrow indicates the direction of hot air);

[0020] Figure 4 for Figure 1 A is an enlarged schematic diagram of the local structure at center A;

[0021] Figure 5 for Figure 2 A magnified schematic diagram of the local structure at B in the middle;

[0022] In the above drawings:

[0023] Casing 1, grinding cylinder 2, feed pipe 3, mounting frame 4, grinding roller 5, air inlet duct 6, main shaft 7, separator 8, discharge pipe 9, receiving plate 10, grinding disc 11, grinding gap 12, connecting channel 13, cantilever 14, connecting rod 15, vertical rod 16, scraper 17, inner convex part 18, annular inclined surface 19, air inlet shell 20, distribution plate 21, notch 22, separator drive shaft 23, upper channel 24, lower channel 25, sliding ring 26. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0025] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0026] In an exemplary embodiment, Figure 1-5 As shown, this embodiment provides a vertical matte grinding machine, which includes a vertical casing 1, a grinding cylinder 2 is fixedly installed at the bottom of the casing 1, the grinding cylinder 2 has an inner bottom surface, and the casing 1 is also connected to a feed pipe 3 for introducing materials into the grinding cylinder 2; a mounting frame 4 is rotatably installed in the casing 1, and the mounting frame 4 is similar to the plum blossom frame in the prior art, and a plurality of grinding rollers 5 are connected to the mounting frame 4, and the roller surfaces of all grinding rollers 5 are in rolling contact with the inner wall of the grinding cylinder 2 respectively, and the casing 1 is also provided with an air inlet 6 for supplying hot air into the grinding cylinder 2; the mounting frame 4 includes a main shaft 7, and a driving main shaft 7 is also provided at the lower part outside the casing 1 to rotate so that all grinding rollers 5 rotate around the position of the grinding cylinder 2 A spindle driving motor revolves around the center of a circle; a separator 8 is arranged on the top surface of the casing 1, and a separator driving motor for driving the separator 8 is also arranged on the upper outside of the casing 1, and a discharge pipe 9 connected to the separator 8 is also arranged on the casing 1; a receiving tray 10 is also arranged in the casing 1, and the separator 8 has a vertical projection located in the receiving tray 10, and most of the materials downward at the separator 8 can fall into the receiving tray 10, and a grinding disc 11 is rotatably arranged in the receiving tray 10 and rotates relative to the receiving tray 10, a grinding gap 12 is arranged between the grinding disc 11 and the receiving tray 10, and a connecting channel 13 connecting the bottom thereof and the grinding gap 12 is also arranged at the bottom of the receiving tray 10.

[0027] In the above embodiment, the material is introduced through the feed pipe 3 and then falls into the grinding cylinder 2. The hot air entering the grinding cylinder 2 through the air inlet 6 blows the material up and then grinds it between the grinding cylinder 2 and the grinding roller 5. During the grinding process, the ground material moves upward with the hot air and is separated at the separator 8. The qualified material enters the rear equipment (cyclone material tank) from the discharge pipe 9 through the separator 8, and the unqualified material falls downward to the receiving plate 10 below. In the receiving plate 10, the grinding disc 11 and the receiving plate 10 grind this part of the material again. During the process, the connecting channel 13 supplies hot air to enter from below and then drives the ground material upward to the separator 8 again, so as to avoid a large amount of material falling downward between the grinding cylinder 2 and the grinding roller 5 for secondary grinding, so the grinding The grinding efficiency is improved, and the grinding time is reduced accordingly, which solves the problem in the prior art that the material needs to be ground twice, resulting in low grinding efficiency, long overall time consumption, and high equipment energy consumption; more specifically, the spindle drive motor drives the spindle 7 to rotate, so that the mounting frame 4 rotates, thereby driving the grinding roller 5 connected thereto to revolve, and the grinding roller 5 also rotates around the connecting rod 15 while working, which is the same as the operation mode of the grinding roller 5 in the prior art. In more detail, the mounting frame 4 also includes a plurality of cantilevers 14 fixedly connected to the spindle 7 and equidistantly arranged around it, and each grinding roller 5 is connected to one of the cantilevers 14 through a connecting rod 15, so that the grinding roller 5 can be operated when the spindle drive motor is running; further, the cantilever 14 is also fixedly connected to A vertical rod 16 extends downward, and the lower end of the vertical rod 16 is also fixedly connected to a scraper 17 located in the grinding cylinder 2. The function of the scraper 17 is similar to that in the prior art. It also scoops up the material as the mounting frame 4 rotates, and cooperates with the hot air to make the material smoothly flow between the grinding roller 5 and the grinding cylinder 2. However, the connection method of the scraper 17 in this scheme is different from that in the prior art. More specifically, in this scheme, an inner convex portion 18 is provided in the middle of the inner bottom of the grinding cylinder 2, which protrudes upward. The inner convex portion 18 is for the main shaft 7 to rotate through, and the inner convex portion 18 is also provided with an annular inclined surface 19 at its lower end. The lower side of the annular inclined surface 19 extends outward, and the scraper 17 contacts the annular inclined surface 19, so that the vertical rod 16 can be connected to the higher side of the scraper 17, and the scraper 17 and the annular inclined surface 19 are in contact. 19 can also be arranged obliquely, so that the scraper 17 can scoop up the material obliquely upward during the rotation, and the outlet of the air inlet 6 is just opposite to the scraper 17, so that the material can be shoveled between the grinding roller 5 and the grinding cylinder 2 more smoothly; in more detail, the receiving plate 10 is a structure with an arc-shaped inner bottom surface, and the bottom surface of the grinding disc 11 is also an arc-shaped structure, but the grinding disc 11 is smaller than the receiving plate 10, and the grinding gap 12 is located between the bottom of the grinding disc 11 and the inner bottom surface of the dividing plate 21, and is also arc-shaped, but the higher position width of the grinding gap 12 is larger, so that the material can smoothly enter and be stuck in the grinding gap 12 at a lower position, and when the grinding disc 11 rotates, it is ground and reduced, and then carried upward by the hot air introduced by the connecting channel 13;In further detail, the top of the grinding disc 11 may also be arc-shaped, so that when the material falls on it, it can be smoothly thrown out by rotating to prevent the material from being retained. ;

[0028] like Figure 1-3 As shown in the figure, in a further scheme, the diameter of the circle where the lower end of the inner wall of the grinding cylinder 2 is located is smaller than the diameter of the circle where the upper end is located, the grinding roller 5 is in rolling contact with the upper part of the inner wall of the grinding cylinder 2, the air inlet 6 obliquely passes through the grinding cylinder 2 and the lower end opening is located below the grinding roller 5, and cooperates with the inner convex part 18 on the inner bottom surface of the grinding cylinder 2 to form a W-shaped structure in the grinding cylinder 2, with the inclined inner wall of the grinding cylinder 2 on the outside and the annular inclined surface 19 on the inside. The grinding roller 5 and the connecting rod 15 are also inclined. In addition to relying on the centrifugal force generated by the rotation to cooperate with the grinding, the grinding roller 5 also has an oblique downward pressure due to the inclined setting, which can provide the centrifugal force to provide the grinding roller 5 with an inclined downward pressure. It provides a greater rolling force, and the grinding effect can be improved accordingly. At the same time, the inner bottom of the W structure also allows the material to be closer to the inner wall of the grinding cylinder 2, so that the scraper 17 scoops up the material in cooperation with the hot air, so that the material can reach the grinding position (between the grinding cylinder 2 and the grinding roller 5) more smoothly; the casing 1 is also fixed with an air inlet shell 20, and the air inlet shell 20 is provided with an air inlet. The higher end of the air inlet duct 6 is connected to the air inlet shell 20, and the air inlet is connected to the previous device (hot air blower). At the same time, the air inlet duct 6 is arranged in a surrounding manner, so that hot air is introduced from all sides inward and downward, and the scraper 17 is cooperated to better scoop up the material.

[0029] like Figure 1-3 As shown, in a further scheme, the receiving tray 10 is also fixedly connected to a distributing tray 21 located below it and above the mounting frame 4, the feed pipe 3 is located below the distributing tray 21, and the distributing tray 21 is provided with a plurality of notches 22 surrounding the outside of the main shaft 7. More specifically, the distributing tray 21 is a downward buckled arc-shaped ring structure surrounding the outside of the bottom of the receiving tray 10, and the notches 22 are equidistantly distributed on the distributing tray 21, and these notches 22 are located outside the circle where the receiving tray 10 is located. During the upward movement of the hot air, most of the hot air moves upward through the notches 22, and a small part passes through the connecting channel 13 in the middle and enters the receiving tray 10, and the bottom of the receiving tray 10 and the junction with the distributing tray 21 are also in an arc-shaped transition, so that a small part of the hot air can be guided to smoothly gather toward the middle and smoothly enter the connecting channel 13, and smoothly enter the grinding gap 12.

[0030] like Figure 1 , 4As shown, in some embodiments, the outer edge of the distribution plate 21 is fixedly connected to the inner wall of the casing 1, and the main shaft 7 rotates through the receiving plate 10 and is fixedly connected to the grinding plate 11, so that the grinding plate 11 rotates together with the mounting frame 4, and the receiving plate 10 is absolutely stationary, so that the material can be ground in the grinding gap 12. At the same time, the connecting channel 13 can include a plurality of equidistant channels surrounding the main shaft 7, so that the hot air is introduced into the center of the grinding gap 12 through the connecting channel 13, and then flows obliquely upward in an arc shape along the grinding gap 12, so that the ground material is brought upward again out of the receiving plate 10, and then moves to the separator 8.

[0031] like Figure 2 , 3 As shown in Figure 5, in some embodiments, the material distribution plate 21 is separated from the inner wall of the casing 1 and is fixedly connected to the main shaft 7, so that the material distribution plate 21, the receiving plate 10 and the main shaft 7 rotate together, the separator driving motor is connected to the separator 8 driving shaft and the separator 8 driving shaft extends to the bottom of the separator 8 and is fixedly connected to the grinding disc 11, the separator 8 driving shaft rotates under the drive of the separator driving motor, and also causes the grinding disc 11 below to rotate. At this time, the rotation direction of the separator 8 driving shaft is opposite to the rotation direction of the main shaft 7, or there may be a differential speed, so that the material can be ground by the grinding disc 11 and the grinding disc 11 in the grinding gap 12. The receiving tray 10 is ground; in more detail, the connecting channel 13 includes an upper channel 24 connected to the center of the receiving tray 10 and a plurality of lower channels 25 connected to the upper channel 24, and the lower channel 25 is connected to the space below the receiving tray 10, and the upper channel 24 is connected to the center of the receiving tray 10, and the plurality of lower channels 25 supply hot air to enter from multiple positions, and then converge into the upper channel 24, and are introduced together into the center of the grinding gap 12 in the receiving tray 10, and then flow obliquely upward in an arc shape along the grinding gap 12, so that the ground material is brought upward again out of the receiving tray 10, and then moves toward the separator 8.

[0032] like Figure 2 , 3 As shown in Figure 5, further, a sliding ring 26 is fixedly connected to the inner wall of the casing 1, and an annular supporting slope is provided at the lower end of the sliding ring 26 extending inward. The outer edge of the distribution plate 21 is in sliding contact with the annular supporting slope. The sliding ring 26 and the annular supporting slope provide sliding support for the outer edge of the distribution plate 21, so that the distribution plate 21, the main shaft 7 and the mounting frame 4 can rotate more stably.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A vertical matte grinding machine, characterized in that: The invention comprises a vertical casing, wherein a grinding cylinder is fixedly mounted at the bottom of the casing, wherein the grinding cylinder has an inner bottom surface, and the casing is also connected with a feed pipe for introducing materials into the grinding cylinder; a mounting frame is rotatably mounted in the casing, wherein a plurality of grinding rollers are connected to the mounting frame, and the roller surfaces of all the grinding rollers are in rolling contact with the inner wall of the grinding cylinder respectively, and the casing is also provided with an air inlet duct for supplying hot air into the grinding cylinder; the mounting frame comprises a main shaft, and a main shaft is also provided at the lower part outside the casing to drive the main shaft to rotate so that all the grinding rollers rotate around the circle where the grinding cylinder is located. A spindle driving motor revolves around the center of a circle; a separator is arranged on the top surface of the casing, a separator driving motor for driving the separator is also arranged on the upper side of the casing, and a discharge pipe connected to the separator is also arranged on the casing; a receiving tray is also arranged in the casing, the separator has a vertical projection located in the receiving tray, and a grinding disc is rotatably arranged in the receiving tray and rotates relative to the receiving tray, a grinding gap is arranged between the grinding disc and the receiving tray, and a connecting channel connecting the bottom thereof and the grinding gap is also arranged at the bottom of the receiving tray.

2. The vertical matte grinding machine according to claim 1, characterized in that: The diameter of the circle where the lower end of the inner wall of the grinding cylinder is located is smaller than the diameter of the circle where the upper end is located, the grinding roller is in rolling contact with the upper part of the inner wall of the grinding cylinder, the air inlet duct obliquely passes through the grinding cylinder and the lower end opening is located below the grinding roller, and an air inlet shell is fixedly surrounded on the casing, the air inlet shell is provided with an air inlet, and the higher end of the air inlet duct is connected to the air inlet shell.

3. The vertical matte grinding machine according to claim 2, characterized in that: The mounting frame also includes a plurality of cantilevers fixedly connected to the main shaft and equidistantly arranged around it. Each grinding roller is connected to one of the cantilevers via a connecting rod. The cantilever is also fixedly connected to a vertical rod extending downward, and the lower end of the vertical rod is also fixedly connected to a scraper located in the grinding cylinder.

4. The vertical matte grinding machine according to claim 1, characterized in that: The material receiving tray is also fixedly connected to a material distributing tray located below the receiving tray and above the mounting frame, and the material distributing tray is provided with a plurality of notches surrounding the outside of the main shaft.

5. The vertical matte grinding machine according to claim 4, characterized in that: The outer edge of the material distribution plate is fixedly connected to the inner wall of the casing, and the main shaft is fixedly connected to the grinding disc after rotating through the material receiving plate.

6. The vertical matte grinding machine according to claim 4, characterized in that: The material distribution plate is separated from the inner wall of the casing and fixedly connected to the main shaft. The separator driving motor is connected to a separator driving shaft, and the separator driving shaft extends to the bottom of the separator and is fixedly connected to the grinding plate.

7. The vertical matte grinding machine according to claim 6, characterized in that: A sliding ring is also fixedly connected to the inner wall of the casing, and an annular supporting inclined surface is provided at the lower end of the sliding ring extending inwardly, and the outer edge of the material distribution plate is in sliding contact with the annular supporting inclined surface.

8. The vertical matte grinding machine according to claim 5, characterized in that: The communication channel includes a plurality of channels surrounding the main shaft.

9. The vertical matte grinding machine according to claim 6 or 7, characterized in that: The connecting channel includes an upper channel connected to the center of the receiving tray and a plurality of lower channels connected to the upper channel, and the lower channels are connected to the space below the receiving tray.

10. The vertical matte grinding machine according to claim 3, characterized in that: An inner convex portion is provided in the middle of the inner bottom of the grinding cylinder and protrudes upward. The inner convex portion allows the main shaft to rotate through the inner convex portion, and the inner convex portion is also provided with an annular inclined surface at its lower end. The lower side of the annular inclined surface extends outward, and the scraper contacts the annular inclined surface.

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