Vertical matte grinder

Abstract

The present application provides a kind of vertical copper matte grinder, it includes vertical machine shell, the inner bottom of machine shell is fixedly installed with grinding cylinder, grinding cylinder has inner bottom surface, machine shell is also connected with the feed pipe of material into grinding cylinder;Rotary mounting is installed in the machine shell, and the mounting frame is connected with multiple grinding rollers on the mounting frame, and the roller surface of all grinding rollers is respectively in rolling contact with the inner wall of grinding cylinder, and the air inlet duct for supplying hot air into grinding cylinder is further provided on the machine shell;Separator is provided on the inner top surface of machine shell, and separator drive motor for driving separator is further provided on the upper part of machine shell outside, and discharge pipe connected with separator is further provided on the machine shell;Material receiving disc is further provided in the machine shell, and grinding disc relatively rotating with material receiving disc is rotatably provided in the material receiving disc, grinding gap is provided between grinding disc and material receiving disc, and communication passage is further provided in the inner bottom of material receiving disc.The present application solves the problem of low grinding efficiency, long overall time consumption and high equipment energy consumption caused by the need for secondary grinding of material in the prior art.

Description

Technical Field

[0001] This invention relates to the field of copper matte processing equipment, and more particularly to a vertical copper matte grinding machine. Background Technology

[0002] Copper-containing hazardous waste can be treated to extract crude copper, but also produces copper matte (copper content between 20% and 70%). The copper matte is typically crushed first and then fed into a circulating grinding system for grinding. A 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's exhaust 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 ground material is collected in the cyclone material tank, and the dust-laden exhaust air is treated by the dust removal system before being discharged. The grinding mill typically uses a Raymond mill. A Raymond mill uses a bracket (mounting frame) to connect the grinding rollers. A drive motor rotates the bracket, causing the grinding rollers to revolve. An internal grinding cylinder is also present. During the revolving motion of the grinding rollers, they contact and roll against the inner wall of the cylinder, grinding the material between the cylinder and the rollers. A duct at the bottom supplies hot air, and a separator is located at the top. The ground material rises with the hot air, and after passing through the separator, material of the correct particle size exits through the discharge pipe, while larger particles fall back into the grinding cylinder for further grinding. A shovel at the bottom, rotating with the bracket, scoops up the material from the bottom, allowing it to flow smoothly between the grinding rollers and the cylinder, in conjunction with the hot air. However, during the actual process, a significant portion of the copper matte material will fall back down for secondary grinding, resulting in reduced overall grinding efficiency, longer grinding time, and increased equipment energy consumption. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a vertical copper matte grinding machine, which solves the problems of low grinding efficiency, long overall time consumption, and high energy consumption caused by the need for secondary grinding of materials in existing technologies.

[0004] According to an embodiment of the present invention, a vertical copper matte grinding mill includes a vertical casing, a grinding cylinder fixedly installed at the bottom of the casing, the grinding cylinder having an inner bottom surface, and a feed pipe connected to the casing to guide material into the grinding cylinder; a mounting frame rotatably mounted inside the casing, with multiple grinding rollers connected to the mounting frame, and the roller surfaces of all grinding rollers respectively rollingly contacting the inner wall of the grinding cylinder; an air inlet duct for supplying hot air into the grinding cylinder is also provided on the casing; the mounting frame includes a main shaft, and a drive mechanism for rotating the main shaft is provided at the lower outer surface of the casing to cause all grinding rollers to rotate. A main shaft drive motor revolves around the center of the grinding cylinder; a separator is installed on the top surface inside the casing, and a separator drive motor is installed on the upper outside of the casing to drive the separator; a discharge pipe connected to the separator is also installed on the casing; a receiving tray is also installed inside the casing, the separator has a vertical projection located in the receiving tray, and a grinding disc that rotates relative to the receiving tray is installed inside the receiving tray. A grinding gap is provided between the grinding disc and the receiving tray, and a connecting channel connecting the bottom of the receiving tray to the grinding gap is also provided at the bottom of the receiving tray.

[0005] In the above embodiments, after grinding between the grinding cylinder and the grinding roller, the material moves upward with the hot air and is separated at the separator. Qualified material enters the downstream equipment through the discharge pipe after passing through the separator, while unqualified material falls downward into the receiving tray below. In the receiving tray, the grinding disc and the receiving tray grind this part of the material again. During the process, the hot air supplied through the channel enters from below and carries the ground material upward again to the separator. This avoids a large amount of material falling downward between the grinding cylinder and the grinding roller for secondary grinding, thus improving the grinding efficiency and reducing the grinding time. It solves the problems 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.

[0006] Furthermore, the diameter of the circle at the lower end of the inner wall of the grinding cylinder is smaller than the diameter of the circle at the upper end. The grinding roller makes rolling contact with the upper part of the inner wall of the grinding cylinder. The air inlet duct passes through the grinding cylinder at an angle and the lower end opening is located below the grinding roller. An air inlet shell is also fixedly surrounded on the machine housing. The air inlet shell is provided with an air inlet. The higher end of the air inlet duct is connected to the air inlet shell.

[0007] Furthermore, the mounting frame also includes multiple cantilever arms that are fixedly connected to the main shaft and are equidistantly arranged around it. Each grinding roller is connected to one of the cantilever arms via a connecting rod. The cantilever arms are also fixedly connected to a downwardly extending vertical rod, and the lower end of the vertical rod is also fixedly connected to a shovel located inside 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 several notches surrounding the main shaft.

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

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

[0011] Furthermore, a sliding ring is fixedly connected to the inner wall of the housing, and an annular support slope is provided at the lower end of the sliding ring, with the outer edge of the dispensing disc sliding in contact with the annular support slope.

[0012] Furthermore, the connecting channels include multiple channels surrounding the main shaft.

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

[0014] Furthermore, the inner bottom of the grinding cylinder has an upward-protruding inner part that allows the main shaft to rotate through. The inner part also has an annular inclined surface at its lower end, with the lower side of the annular inclined surface extending outward, and the shovel contacting the annular inclined surface.

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

[0016] Grinding is performed at the bottom of the machine casing. The material moves upward with the hot air and is separated by a separator. Qualified material enters the next equipment through the discharge pipe, while unqualified material falls back to the receiving tray for re-grinding. This does not affect the material falling downward and avoids increasing the grinding load on the grinding rollers. Grinding is performed simultaneously from top to bottom, which can shorten the overall time and reduce grinding energy consumption. Therefore, it solves the problems of low grinding efficiency, long overall time, and high equipment energy consumption caused by the need for secondary grinding of materials in the existing technology. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present invention. Figure 1 (The arrow indicates the direction of the hot air);

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present invention. Figure 2 (The arrow indicates the direction of the hot air);

[0019] Figure 3 This is a schematic diagram of the overall structure of an embodiment of the present invention. Figure 2 (The arrow indicates the direction of the hot air);

[0020] Figure 4 for Figure 1 Enlarged schematic diagram of a local structure at point A;

[0021] Figure 5 for Figure 2 Enlarged schematic diagram of the local structure at point B;

[0022] In the above attached figures:

[0023] 1. Casing; 2. Grinding cylinder; 3. Feed pipe; 4. Mounting frame; 5. Grinding roller; 6. Air inlet duct; 7. Main shaft; 8. Separator; 9. Discharge pipe; 10. Receiving tray; 11. Grinding disc; 12. Grinding gap; 13. Connecting channel; 14. Cantilever; 15. Connecting rod; 16. Vertical rod; 17. Shovel; 18. Inner protrusion; 19. Annular inclined surface; 20. Air inlet shell; 21. Distributor plate; 22. Notch; 23. Separator drive shaft; 24. Upper channel; 25. Lower channel; 26. Sliding ring. Detailed Implementation

[0024] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In an exemplary implementation, such as Figure 1-5 As shown, this embodiment provides a vertical copper matte grinding machine, which includes a vertical housing 1. A grinding cylinder 2 is fixedly installed at the bottom inside the housing 1. The grinding cylinder 2 has an inner bottom surface. A feed pipe 3 is also connected to the housing 1 to guide the material into the grinding cylinder 2. A mounting frame 4 is rotatably installed inside the housing 1. The mounting frame 4 is similar to the quincunx frame in the prior art. Multiple 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. An air inlet duct 6 is also provided on the housing 1 to supply hot air into the grinding cylinder 2. The mounting frame 4 includes a main shaft 7, and a drive shaft 7 is provided at the lower outer side of the housing 1 to rotate so that all grinding rollers 5 rotate around the grinding cylinder 2. A main shaft drive motor revolves around the center of a circle; a separator 8 is provided on the top surface inside the housing 1, and a separator drive motor for driving the separator 8 is also provided on the upper outside of the housing 1. A discharge pipe 9 connected to the separator 8 is also provided on the housing 1; a receiving tray 10 is also provided inside the housing 1. The separator 8 has a vertical projection located inside the receiving tray 10. Most of the material downward at the separator 8 can fall into the receiving tray 10. A grinding disc 11 is rotatably arranged inside the receiving tray 10, which rotates relative to the receiving tray 10. A grinding gap 12 is provided between the grinding disc 11 and the receiving tray 10, and a connecting channel 13 connecting the bottom of the receiving tray 10 and the grinding gap 12 is also provided.

[0027] In the above embodiment, the material is introduced through the feed pipe 3 and then falls into the grinding cylinder 2. Hot air enters the grinding cylinder 2 through the air inlet 6, blowing the material up and grinding it between the grinding cylinder 2 and the grinding roller 5. During the grinding process, the finely ground material moves upward with the hot air and is separated at the separator 8. Qualified material passes through the separator 8 and enters the downstream equipment (cyclone material tank) through the discharge pipe 9. Unqualified material falls downward into the receiving tray 10 below. In the receiving tray 10, the grinding disc 11 and the receiving tray 10 grind this portion of material again. During this process, hot air is supplied from below through the connecting channel 13, carrying the finely ground material upward again to the separator 8. This avoids a large amount of material falling downward between the grinding cylinder 2 and the grinding roller 5 for secondary grinding. Therefore, the grinding process... The grinding efficiency is improved, and the grinding time is reduced accordingly, solving the problems of low grinding efficiency, long overall time, and high equipment energy consumption caused by the need for secondary grinding of materials in existing technologies. More specifically, the main shaft drive motor drives the main shaft 7 to rotate, causing the mounting frame 4 to rotate, which in turn drives the grinding roller 5 connected to it to revolve. While working, the grinding roller 5 also rotates on its own around the connecting rod 15, which is the same as the operation mode of the grinding roller 5 in existing technologies. More specifically, the mounting frame 4 also includes multiple cantilever arms 14 that are fixedly connected to the main shaft 7 and are equidistantly arranged around it. Each grinding roller 5 is connected to one of the cantilever arms 14 through a connecting rod 15, so that the grinding roller 5 is running when the main shaft drive motor is running. Furthermore, the cantilever arm 14 is also fixedly connected to... A vertical rod 16 extends downwards, and a scraper 17 located inside the grinding cylinder 2 is fixedly connected to the lower end of the vertical rod 16. The scraper 17 functions similarly to that in the prior art, scooping up the material as the mounting frame 4 rotates, and cooperating with hot air to allow the material to smoothly pass between the grinding roller 5 and the grinding cylinder 2. However, the connection method of the scraper 17 in this solution is different from that in the prior art. More specifically, in this solution, an inner protrusion 18 is provided in the middle of the inner bottom of the grinding cylinder 2, which is provided for the main shaft 7 to rotate through. The inner protrusion 18 is also provided with an annular inclined surface 19 at its lower end. The lower side of the annular inclined surface 19 extends outwards, and the scraper 17 contacts the annular inclined surface 19. In this way, the vertical rod 16 can be connected to the higher side of the scraper 17, and the scraper 17 contacts the annular inclined surface. The material can also be inclined between the grinding rollers 5 and the grinding cylinder 2, so that the scraper 17 can scoop up the material at an angle during rotation, and the outlet of the air inlet 6 is also opposite to the scraper 17, so that the material can be scooped up between the grinding rollers 5 and the grinding cylinder 2 more smoothly; more specifically, the receiving plate 10 has an arc-shaped inner bottom surface, and the bottom surface of the grinding plate 11 is also an arc-shaped structure, but the grinding plate 11 is smaller than the receiving plate 10. The grinding gap 12 is located between the bottom of the grinding plate 11 and the inner bottom surface of the material distribution plate 21, and is also arc-shaped, but the higher position of the grinding gap 12 is wider, so that the material can enter smoothly and be stuck in the lower position of the grinding gap 12. When the grinding plate 11 rotates, it is ground down and then carried upward by the hot air introduced by the connecting channel 13.In more detail, the top of the grinding disc 11 can also be arc-shaped, so that when material falls on it, it can be smoothly thrown outward by rotation, preventing material from accumulating.

[0028] like Figure 1-3 As shown, in a further embodiment, the diameter of the lower end of the inner wall of the grinding cylinder 2 is smaller than the diameter of the upper end. The grinding roller 5 rolls in contact with the upper part of the inner wall of the grinding cylinder 2. The air inlet duct 6 passes obliquely through the grinding cylinder 2, with its lower end opening located below the grinding roller 5. This, combined with the inner protrusion 18 on the inner bottom surface of the grinding cylinder 2, forms a W-shaped structure inside the grinding cylinder 2. The outer side is an oblique inner wall of the grinding cylinder 2, and the inner side is an annular inclined surface 19. The grinding roller 5 and the connecting rod 15 are also oblique. Besides relying on the centrifugal force generated by rotation for grinding, the grinding roller 5 also has a downward pressure due to its oblique setting, which, combined with the centrifugal force, can improve... The larger crushing force provides a corresponding improvement in grinding effect. At the same time, the inner bottom of the W structure allows the material to get closer to the inner wall of the grinding cylinder 2. This allows the shovel 17 to scoop up the material and, in conjunction with the hot air, make the material reach the grinding position (between the grinding cylinder 2 and the grinding roller 5) more smoothly. An air inlet shell 20 is also fixedly arranged around the machine housing 1. 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. The air inlet is connected to the previous equipment (hot air blower). At the same time, there are multiple air inlets 6 arranged around the machine. This allows hot air to be introduced diagonally downward from all sides, which, together with the shovel 17, can better scoop up the material.

[0029] like Figure 1-3 As shown, in a further embodiment, the receiving tray 10 is also fixedly connected to a distributing tray 21 located below it and above the mounting bracket 4. The feed pipe 3 is located below the distributing tray 21. The distributing tray 21 is provided with several notches 22 surrounding the main shaft 7. More specifically, the distributing tray 21 is a downward-curving arc-shaped ring structure surrounding the bottom of the receiving tray 10. The notches 22 are evenly distributed on the distributing tray 21. These notches 22 are located outside the circle of the receiving tray 10. During the upward movement of the hot air, most of the hot air moves upward through the notches 22, while a small portion enters the receiving tray 10 through the connecting channel 13 located in the middle. The bottom of the receiving tray 10 and the distributing tray 21 are also arc-shaped transitions. This can provide guidance for the small portion of hot air to smoothly gather towards 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 distributing disc 21 is fixedly connected to the inner wall of the housing 1. The main shaft 7 rotates through the receiving disc 10 and is fixedly connected to the grinding disc 11. In this way, the grinding disc 11 rotates together with the mounting frame 4, while the receiving disc 10 is absolutely stationary, so that the material is ground in the grinding gap 12. At the same time, the connecting channel 13 may include multiple channels equidistantly surrounding the main shaft 7. Hot air is introduced into the center of the grinding gap 12 through the connecting channel 13, and then flows upward in an arc along the grinding gap 12, thereby carrying the ground material upward again out of the receiving disc 10, and then moving towards the separator 8.

[0031] like Figure 2 , 3 As shown in Figure 5, in some embodiments, the distributing disc 21 is separated from the inner wall of the housing 1 and fixedly connected to the main shaft 7. Thus, the distributing disc 21, the receiving disc 10, and the main shaft 7 rotate together. The separator drive motor is connected to the separator 8 drive shaft, which extends below the separator 8 and is fixedly connected to the grinding disc 11. The separator 8 drive shaft rotates under the drive of the separator drive motor, simultaneously causing the grinding disc 11 below to rotate. At this time, the rotation direction of the separator 8 drive shaft is opposite to the rotation direction of the main shaft 7, or there may be a differential speed. This allows the material to be ground by the grinding disc 11 and the grinding disc 11 within the grinding gap 12. The receiving tray 10 is used for grinding; more specifically, the connecting channel 13 includes an upper channel 24 connected to the center of the receiving tray 10 and multiple lower channels 25 connected to the upper channel 24. The lower channels 25 are connected to the space below the receiving tray 10. The upper channel 24 is connected to the center of the receiving tray 10. The multiple lower channels 25 supply hot air from multiple positions, and then converge into the upper channel 24. They are then introduced into the center of the grinding gap 12 in the receiving tray 10, and then flow upward in an arc shape along the grinding gap 12, thereby carrying the ground material upward out of the receiving tray 10 again, and then moving towards the separator 8.

[0032] like Figure 2 , 3 As shown in Figure 5, a sliding ring 26 is further fixedly connected to the inner wall of the housing 1. The lower end of the sliding ring 26 extends inward and is provided with an annular support slope. The outer edge of the dispensing plate 21 slides in contact with the annular support slope. The sliding ring 26 and the annular support slope provide sliding support for the outer edge of the dispensing plate 21, which makes the rotation of the dispensing plate 21, the main shaft 7 and the mounting bracket 4 more stable.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A vertical copper matte grinding machine, characterized in that, The device includes a vertical housing, with a grinding cylinder fixedly installed at the bottom inside the housing. The grinding cylinder has an inner bottom surface, and a feed pipe connected to the housing to guide material into the grinding cylinder. A mounting frame is rotatably mounted inside the housing, and multiple 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 cylinder. An air inlet duct is also provided on the housing to supply hot air into the grinding cylinder. The mounting frame includes a main shaft, and a main shaft drive motor is located on the lower outer surface of the housing to drive the main shaft to rotate, causing all the grinding rollers to revolve around the center of the circle containing the grinding cylinder. A separator is located on the top inner surface of the housing, and a separator is located on the upper outer surface of the housing. The separator is driven by a motor, and a discharge pipe connected to the separator is also provided on the housing. A receiving tray is also provided inside the housing. The separator has a vertical projection located within the receiving tray, and a grinding disc that rotates relative to the receiving tray is rotatably arranged inside the receiving tray. A grinding gap is provided between the grinding disc and the receiving tray, and a connecting channel connecting the bottom of the receiving tray to the grinding gap is also provided. A distributing tray located below the receiving tray and above the mounting frame is also fixedly connected to the receiving tray. The distributing tray has several notches surrounding the main shaft, and all notches are located outside the circle of the receiving tray. The bottom of the receiving tray and the distributing tray form an arc transition.

2. The vertical copper matte grinding machine as described in claim 1, characterized in that, The diameter of the circle at the lower end of the inner wall of the grinding cylinder is smaller than the diameter of the circle at the upper end. The grinding roller rolls in contact with the upper part of the inner wall of the grinding cylinder. The air inlet duct passes obliquely through the grinding cylinder and its lower end opening is located below the grinding roller. An air inlet shell is also fixedly surrounded on the housing. The air inlet shell is provided with an air inlet. The higher end of the air inlet duct communicates with the air inlet shell.

3. The vertical copper matte grinding machine as described in claim 2, characterized in that, The mounting frame also includes a plurality of cantilever arms that are fixedly connected to the main shaft and are equidistantly arranged around it. Each grinding roller is connected to one of the cantilever arms through a connecting rod. The cantilever arm is also fixedly connected to a downwardly extending vertical rod, and the lower end of the vertical rod is also fixedly connected to a shovel located inside the grinding cylinder.

4. The vertical copper matte grinding machine as described in claim 1, characterized in that, The outer edge of the material distribution plate is fixedly connected to the inner wall of the machine housing, and the main shaft rotates through the material receiving plate and is then fixedly connected to the grinding disc.

5. The vertical copper matte grinding machine as described in claim 1, characterized in that, The material distribution plate is separated from the inner wall of the machine housing and is fixedly connected to the main shaft. The separator drive motor is connected to the separator drive shaft, which extends below the separator and is fixedly connected to the grinding disc.

6. The vertical copper matte grinding machine as described in claim 5, characterized in that, A sliding ring is also fixedly connected to the inner wall of the housing. The lower end of the sliding ring extends inward and is provided with an annular support slope. The outer edge of the material distribution plate slides in contact with the annular support slope.

7. The vertical copper matte grinding machine as described in claim 4, characterized in that, The connecting channels include a plurality of channels surrounding the main shaft.

8. The vertical copper matte grinding machine as described in claim 5 or 6, characterized in that, The connecting channel includes an upper channel connected to the center of the receiving tray and multiple lower channels connected to the upper channel, and the lower channels are connected to the space below the receiving tray.

9. The vertical copper matte grinding machine as described in claim 3, characterized in that, The grinding cylinder has an inner protrusion that protrudes upward from the middle of its inner bottom. The main shaft passes through the inner protrusion, and the inner protrusion also has an annular inclined surface at its lower end. The lower side of the annular inclined surface extends outward, and the shovel contacts the annular inclined surface.

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