Vertical spiral stirring ore grinding machine

Abstract

The utility model relates to a vertical spiral stirring ore mill, which comprises a cylinder with a cavity, the top of the cavity of the cylinder is rotatably connected with a feeding pipe for communication, the upper part of the side wall of the cavity of the cylinder is provided with an overflow port, a spiral stirrer is arranged in the cavity of the cylinder, and the end part of the spiral stirrer is provided with a driving motor for driving the spiral stirrer to rotate. A material pumping pipe is installed on the side wall of the bottom of a cavity of the barrel and communicated with a circulating pump, the circulating pump is communicated with a feeding hopper installed on the top of the barrel through a feeding pipe, a discharging hopper corresponding to the feeding hopper is arranged at the upper end of the feeding pipe, and the feeding pipe can rotate to enable the discharging hopper and the feeding hopper to be staggered and separated. The pressure at the bottom of the barrel can be reduced, and the service life of the vertical spiral stirring ore mill is prolonged.

Description

Technical Field

[0001] The utility model relates to a vertical spiral stirring mill, belonging to the field of stirring mills. Background Art

[0002] Vertical spiral stirring mill (also known as tower mill) is a highly efficient ultrafine grinding equipment developed by introducing the technology of well-known domestic mining institutes. It has been widely used in fine grinding or re-grinding operations in gold, silver, molybdenum, lead-zinc, manganese, iron and nickel ore beneficiation plants, and has achieved good results. When the grinding fineness is required to be less than 0.15mm, it is more economical to use two-stage grinding. At this time, the power consumption per ton of ore is less, the particle size composition of the grinding product is more uniform, and the over-crushing phenomenon is less, which can improve the separation index.

[0003] In the existing grinding mill, during the fine grinding and ultrafine grinding process of minerals, as the content of mineral powder added to the grinding chamber 17 increases, the positive pressure on the cylinder gradually increases. In particular, under the pressure and extrusion shear force of excessive minerals at the bottom 19 of the grinding chamber 17, the side walls of the grinding chamber 17 and the stirring blades 18 are subjected to the greatest force, which can easily cause serious wear of the side walls of the grinding chamber 17 and the stirring blades 18, and ultimately make the vertical spiral stirring blades 18 prone to breakage and deformation, shortening the service life of the grinding mill. Utility Model Content

[0004] In order to overcome the problems existing in the background technology, the utility model proposes a vertical spiral stirring mill that can reduce the pressure at the bottom of the cylinder and increase the service life of the vertical spiral stirring mill. The utility model can extract the raw materials at the bottom of the cylinder and then add them from the top, which can effectively reduce the pressure at the bottom of the mill cylinder, reduce the torque on the lower part of the spiral stirrer, reduce the wear of the spiral stirrer, and increase the service life of the spiral stirrer. The feeding pipe provided in the utility model can be rotated to stagger and separate the lower hopper and the upper hopper, so as to continuously feed into the cylinder. After the feeding is completed, the feeding pipe can be rotated and reset to make the lower hopper and the upper hopper correspond.

[0005] In order to solve the above problems, the utility model is implemented through the following technical solutions: a vertical spiral stirring mill, comprising a cylinder with a cavity, the top of the cavity of the cylinder is rotatably connected to a feeding pipe, an overflow port is provided on the upper part of the side wall of the cavity of the cylinder, a spiral stirrer is installed in the cavity of the cylinder, and a driving motor for driving the spiral stirrer to rotate is provided at the end of the spiral stirrer;

[0006] The side wall of the bottom of the cavity of the cylinder is equipped with a pumping pipe connected to the circulation pump, and the circulation pump is connected to the upper hopper installed on the top of the cylinder through the feeding pipe. The upper end of the feeding pipe is provided with a lower hopper corresponding to the upper hopper, and the feeding pipe can be rotated to stagger and separate the lower hopper and the upper hopper;

[0007] Furthermore, the feeding tube is Z-shaped, one end of which is rotatably connected to the top wall of the barrel, and the other end of which is fixedly installed with the lower hopper, and the feeding tube is also fixedly installed with a turntable that can contact the upper side of the barrel, and a screw is provided at a position of the turntable away from the feeding tube; the barrel is provided with a screw groove corresponding to the screw, and after the feeding tube is rotated, it can be threadedly connected to the screw groove through the screw and locked;

[0008] Furthermore, a timing controller is installed on the top of the cylinder, and the timing controller is electrically connected to the circulation pump.

[0009] The beneficial effects of the utility model are as follows: the utility model can extract the raw materials at the bottom of the cylinder and then add them from the top, which can effectively reduce the pressure at the bottom of the grinding mill cylinder, reduce the torque on the lower part of the spiral agitator, reduce the wear of the spiral agitator, and increase the service life of the spiral agitator. The feeding pipe provided in the utility model can be rotated to stagger and separate the lower hopper and the upper hopper, so as to continuously feed the material into the cylinder. After the feeding is completed, the feeding pipe can be rotated and reset to make the lower hopper correspond to the upper hopper. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of a vertical spiral stirring mill;

[0011] Figure 2 A top view of a vertical spiral stirring mill;

[0012] Figure 3 It is a cross-sectional view of a vertical spiral stirring mill;

[0013] Figure 4 for Figure 3 A partial enlarged schematic diagram of position A in the middle;

[0014] Explanation of the reference numerals: 1. barrel; 2. driving motor; 3. spiral agitator; 4. feeding pipe; 5. lower hopper; 6. circulating pump; 7. extraction pipe; 8. feeding pipe; 9. upper hopper; 10. turntable; 11. screw; 12. timing controller; 13. first screw groove; 14. overflow port; 15. second screw groove; 16. cavity. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution, purpose and effect of the utility model clear and easy to understand, the preferred embodiments of the utility model will be described in detail below with reference to the accompanying drawings so that technicians can understand.

[0016] It should be noted that in the description of the present utility model, unless otherwise clearly defined or limited, the terms “installed”, “connected”, “connected”, “connected”, etc. should be understood in a broad sense, that is, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0017] See also Figures 1 to 4 A vertical spiral stirring mill comprises a cylinder 1 having a cavity 16, wherein the top of the cavity 16 of the cylinder 1 is rotatably connected to a feeding pipe 4, so that mineral powder can be added into the cylinder 1 from the feeding pipe 4. An overflow port 14 is provided at the upper side wall of the cavity 16 of the cylinder 1, and the overflow port 14 is arranged near the upper part of the cavity. When the material particles in the cylinder 1 are reduced to a certain diameter by the grinding of the mill, the buoyancy of the material is greater than its own gravity, so that the material moves upward, and then flows out through the overflow port 14, while the coarse and heavy material enters the bottom of the cylinder 1 of the mill. A spiral stirrer 3 is installed in the cavity 16 of the cylinder 1, and a driving motor 2 for driving the spiral stirrer 3 to rotate is provided at the end thereof. When in use, the motor 2 can be driven to rotate, so that the blades of the spiral stirrer 3 stir and grind the mineral powder in the cylinder 1. The material is ground by utilizing the collision between the mineral powders, the stirring between the spiral agitator 3 and the mineral powders, and the grinding between the inner wall of the grinding machine cylinder 1 and the mineral powders, so that the diameter of the material particles is gradually reduced.

[0018] The side wall at the bottom of the cavity 16 of the cylinder 1 is provided with a pumping pipe 7 connected to a circulation pump 6. The circulation pump 6 is connected to an upper hopper 9 installed on the top of the cylinder 1 through a feeding pipe 8. A lower hopper 5 corresponding to the upper hopper 9 is provided at the upper end of the feeding pipe 4. When in use, the circulation pump 6 is turned on to extract the material at the bottom of the mill cylinder 1, and then the material is added to the mill cylinder 1 through the upper hopper 9, the lower hopper 5 and the feeding pipe 4, and the material is ground in multiple cycles. The pressure at the bottom of the mill cylinder 1 can be effectively reduced, and the service life of the vertical spiral stirring mill can be effectively improved. To a certain extent, the deformation of the agitator caused by excessive pressure at the bottom of the cavity can be avoided.

[0019] The feeding tube 4 can rotate so that the lower hopper 5 and the upper hopper 9 are staggered and separated. The feeding tube 4 is Z-shaped, one end of which is rotatably connected to the top wall of the barrel 1, and the other end of which is fixedly installed with the lower hopper 5. The feeding tube 4 is also fixedly installed with a turntable 10 that can contact the upper side of the barrel 1, and a screw 11 is provided at a position of the turntable 10 away from the feeding tube 4. The barrel 1 is also provided with a screw groove corresponding to the screw 11, and the screw groove is divided into a first screw groove 13 and a second screw groove 15. After the feeding tube 4 is rotated, it can be threadedly connected to the first screw groove 13 or the second screw groove 15 through the screw 11 to be locked.

[0020] When it is necessary to add materials, it is only necessary to rotate the screw 11 so that the screw 11 is screwed out of the first screw groove 13, and then rotate the feeding tube 4 so that the lower hopper 5 is separated from the upper hopper 9. Then rotate the screw 11 so that the screw 11 is screwed into the second screw groove 15. At this time, materials can be added into the grinding machine barrel 1 through the lower hopper 5. At this time, the feeding tube 4a, the lower hopper 5a and the screw 11a are in the dotted line position in the figure, so that the lower hopper 5a is separated from the upper hopper 9, so that the feeding is convenient. After the feeding is completed, the feeding tube 4 can be rotated so that the lower hopper 5 corresponds to the upper hopper 9, and then the screw 11 can be rotated to be transferred into the first screw groove 13 and locked, so as to carry out cyclic extraction and grinding.

[0021] In addition, the bottom end of the upper hopper 9 is tightly fitted with the lower hopper 5, and the raw materials at the bottom of the grinding mill cylinder 1 can be circulated and then added from the top of the grinding mill cylinder 1. At the same time, a mounting groove is provided on the inner wall of the top of the grinding mill cylinder 1, and a bearing is fixedly arranged in the mounting groove. The feeding pipe 4 is fixedly connected to the inner ring of the bearing, which can improve the stability of the feeding pipe 4 when rotating.

[0022] In some preferred embodiments, a timing controller 12 is also installed on the top of the cylinder 1, and the timing controller 12 is electrically connected to the circulation pump 6. At the same time, the feeding pipe 4 can also be provided with a motor for driving rotation. And the motor and the motor driving the spiral stirrer 3 are electrically connected to the timing controller 12, so that the timing controller 12 controls the start of the circulation pump 6 and each motor, thereby realizing automatic control of the feeding, extraction, and stirring processes.

[0023] The utility model can extract the raw materials at the bottom of the cylinder and then add them from the top, which can effectively reduce the pressure at the bottom of the grinding mill cylinder, reduce the torque on the lower part of the spiral agitator, reduce the wear of the spiral agitator, and increase the service life of the spiral agitator. The feeding pipe provided in the utility model can be rotated to stagger and separate the lower hopper and the upper hopper, so as to continuously feed the material into the cylinder. After the feeding is completed, the feeding pipe can be rotated and reset to make the lower hopper correspond to the upper hopper.

[0024] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A vertical spiral stirring mill, comprising a cylinder (1) having a cavity (16), the top of the cavity (16) of the cylinder (1) being rotatably connected to a feeding pipe (4), an overflow port (14) being provided at the upper part of the side wall of the cavity (16) of the cylinder (1), a spiral stirrer (3) being installed in the cavity (16) of the cylinder (1), a driving motor (2) being provided at the end of the spiral stirrer (3) for driving the spiral stirrer (3) to rotate, characterized in that: A material extraction pipe (7) is installed on the side wall of the bottom of the cavity (16) of the barrel (1) and is connected to a circulation pump (6). The circulation pump (6) is connected to an upper hopper (9) installed on the top of the barrel (1) through a feeding pipe (8). A lower hopper (5) corresponding to the upper hopper (9) is provided at the upper end of the feeding pipe (4). The feeding pipe (4) can be rotated so that the lower hopper (5) and the upper hopper (9) are staggered and separated. The feeding pipe (4) is Z-shaped, one end of which is rotatably connected to the top wall of the barrel (1) and the other end of which is fixedly installed with the lower hopper (5). The feeding pipe (4) is also fixedly installed with a rotating disk (10) that can contact the upper side of the barrel (1). A screw (11) is provided at a position of the rotating disk (10) away from the feeding pipe (4). The barrel (1) is provided with a screw groove corresponding to the screw (11). After the feeding pipe (4) is rotated, it can be threadedly connected to the screw groove through the screw (11) and locked.

2. The vertical spiral stirring mill according to claim 1, characterized in that: A timing controller (12) is also installed on the top of the cylinder (1), and the timing controller (12) is electrically connected to the circulation pump (6).

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