Large double-impeller leaching stirring tank

Abstract

The invention discloses a large-scale double-impeller leaching stirring tank, and relates to the technical field of gold ore leaching stirring tanks, the large-scale double-impeller leaching stirring tank comprises a transmission part, a bridge part, a stirring part and a tank body part, the transmission part comprises a motor, a high-speed coupler, a speed reducer, a low-speed coupler, a rack and a bearing support; the bearing support comprises a main shaft, a bearing body, a thrust bearing, an upper self-aligning roller bearing, an upper gland, a lower self-aligning roller bearing, a lower gland and a half coupling; the stirring part comprises an upper end shaft, a lower end shaft, an upper hub, a lower hub and blades; a shaft end fixing device is arranged in the center of the bottom of the tank body part; an inflating device is arranged at the lower part of the tank body. The device is used for gold ore pulp leaching operation, the treatment capacity is large, ore flow movement is stable, ore pulp mixing is uniform, air enters the ore pulp through a special inflation device, the ventilation capacity is large, the structure is simple, air dispersion is uniform through blade stirring, and the leaching rate can be effectively improved.

Description

Technical Field

[0001] The invention relates to a large double-impeller leaching stirring tank, belonging to the technical field of stirring tanks. Background Art

[0002] The double-impeller leaching agitator tank has the advantages of stable operation, strong stirring capacity, and uniform slurry distribution. It is the main equipment for the gold selection process of the full-slime cyanide carbon slurry method. With the increase in the processing capacity of the mine selection plant in recent years, the research and development and design of the double-impeller leaching agitator tank has also tended to be large-scale. The transmission structure of the traditional double-impeller leaching agitator tank adopts a pulley or a planetary cycloid reducer, which has low transmission efficiency and complex transmission structure. It cannot withstand large axial loads and cannot meet the needs of large agitators. The impeller design is unreasonable, the stirring effect is poor, and the slurry is unevenly mixed. The air dispersion is uneven, which seriously affects the leaching rate. Summary of the invention

[0003] The object of the present invention is to overcome the above-mentioned shortcomings of the prior art and provide a large double-impeller leaching stirring tank.

[0004] The technical solution provided by the present invention is as follows: a large double-impeller leaching and stirring tank, which includes a transmission part, a bridge part, a stirring part, and a tank body; the tank body is connected to the bridge part, the bridge part is connected to the transmission part, the transmission part is connected to the stirring part in the tank body, and the bridge part is fixed on the upper part, characterized in that an axial end fixing device is arranged at the bottom center of the tank body, an inflating device is arranged at the lower part of the tank body, the transmission part includes a frame, the frame is connected to a motor, the output shaft of the motor is connected to a high-speed coupling, a coupling shield is arranged on the upper part of the high-speed coupling, and the high-speed coupling The input shaft of the reducer is connected, and the output shaft of the reducer is connected to the low-speed coupling, and the low-speed coupling is connected to the bearing support, and the bearing support includes a main shaft connected to the low-speed coupling; a bearing body is arranged outside the main shaft; a thrust bearing is arranged in the middle between the main shaft and the bearing body; an upper spherical roller bearing is arranged in the upper part between the main shaft and the bearing body above the thrust bearing; an upper pressure cover is arranged at the upper end of the upper spherical roller bearing; a lower spherical roller bearing is arranged in the lower part between the main shaft and the bearing body below the thrust bearing; a lower pressure cover is arranged at the lower end of the lower spherical roller bearing; and the lower end of the main shaft is connected to the half coupling.

[0005] Furthermore, the stirring part includes an upper shaft connected to the half coupling; the upper shaft is connected to the lower shaft by bolts; an upper hub is arranged on the upper part of the lower shaft; a lower hub is arranged on the lower part of the lower shaft; and four blades are respectively installed on the upper hub and the lower hub.

[0006] Furthermore, the angle α between the blade and the vertical is in the range of 30° to 60°.

[0007] Furthermore, the shaft end fixing device is composed of a bushing and a bracket, the bushing is installed in a groove on the upper part of the bracket; the legs of the bracket are connected to the bottom plate of the groove body.

[0008] Furthermore, the inner diameter D of the bushing is larger than the outer diameter d of the lower end shaft head of the lower end shaft, and the difference between the two is 5mm to 50mm.

[0009] Furthermore, the inflation device is composed of a vertical tube, a horizontal tube and a circle tube. The vertical tube is vertically connected to the horizontal tube, the horizontal tube is connected to the circle tube, and the vertical tube, the horizontal tube and the circle tube are internally connected. The circle tube is polygonal or circular and is provided with a number of evenly distributed small holes.

[0010] Furthermore, the reducer is a bevel gear-helical gear box reducer, and the input shaft is perpendicular to the output shaft.

[0011] Furthermore, the motor is a speed-regulating motor, and the motor is arranged horizontally.

[0012] Furthermore, the high-speed coupling and the low-speed coupling are elastic rod pin couplings or elastic column pin couplings.

[0013] Beneficial effects of the present invention: The present invention comprises a transmission part, a stirring part, a bridge part, a tank body part, a shaft end fixing device and an inflation device.

[0014] The reducer and the bearing support of the transmission part of the present invention are connected by a low-speed coupling. The reducer only outputs torque without being subjected to axial or radial forces, thereby increasing the service life. The input shaft of the reducer is perpendicular to the output shaft, and the motor is arranged horizontally to reduce the height of the equipment. The bearing support is provided with three groups of bearings, namely, an upper spherical roller bearing, a thrust bearing, and a lower spherical roller bearing, which can withstand large axial and radial forces and meet the needs of large mixing tanks.

[0015] The upper and lower shafts of the stirring part of the present invention are designed separately, which is convenient for manufacturing, installation, maintenance and overhaul; the angle α between the blade and the vertical is in the range of 30° to 60°, which takes into account the horizontal and vertical flow of the slurry and makes the stirring more sufficient and uniform. The upper and lower hubs connect the upper and lower sets of blades to enhance the leaching of gold.

[0016] The shaft end fixing device of the present invention comprises a bushing, the bushing is made of nylon or polyurethane, the inner diameter D of the bushing is larger than the outer diameter d of the shaft head at the lower end of the lower shaft, and the difference between the two is 5mm to 50mm. The stirring part can be swung within a certain range, effectively reducing the bending moment of the upper end shaft of the stirring part and prolonging the service life.

[0017] The aeration device of the present invention comprises a vertical pipe, a horizontal pipe and a ring pipe. The ring pipe is polygonal or circular in shape and can be adjusted according to the diameter of the tank body. The aeration range is large. The ring pipe is provided with downward small holes to ensure uniform aeration and sufficient gas volume, which is beneficial to leaching operations and convenient for replacement and maintenance.

[0018] The invention is used for gold ore slurry leaching operation, has large processing capacity, stable ore flow movement, uniform slurry mixing, air enters the slurry through a special aeration device, has large ventilation volume, simple structure, and air is evenly dispersed after being stirred by blades, which can effectively improve the leaching rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a structural schematic diagram of the transmission part of the present invention; Figure 3 It is a structural schematic diagram of the bearing support of the present invention; Figure 4 It is a structural schematic diagram of the stirring part of the present invention; Figure 5 It is a structural schematic diagram of the shaft end fixing device of the present invention; Figure 6 It is a structural schematic diagram of the inflation device of the present invention; Figure 7 for Figure 6 Top view of the .

[0021] In the figure: 1, transmission part, 2, bridge part, 3, stirring part, 4, tank body, 5, shaft end fixing device, 6, charging device, 7, motor, 8, coupling cover, 9, high-speed coupling, 10, reducer, 11, low-speed coupling, 12, frame, 13, bearing support, 14, main shaft, 15, upper pressure cover, 16, upper spherical roller bearing, 17, thrust bearing, 18, bearing body, 19, lower spherical roller bearing, 20, lower pressure cover, 21, half coupling, 22, upper end shaft, 23, lower end shaft, 24, upper hub, 25, lower hub, 26, blade, 27, bushing, 28, bracket, 29, vertical pipe, 30, horizontal pipe, 31, ring pipe. DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is described in detail below with reference to the accompanying drawings: like Figure 1As shown, a large double-impeller leaching and stirring tank includes a transmission part 1, a bridge part 2, a stirring part 3, a tank body 4, a shaft end fixing device 5, and an aeration device 6; the transmission part 1 is installed in the middle upper part of the bridge part 2, the lower part of the transmission part 1 is connected to the stirring part 3, the stirring part 3 is arranged in the tank body 4, the bridge part 2 is fixed to the upper part of the tank body 4, the shaft end fixing device 5 is arranged at the bottom center of the tank body 4, and the aeration device 6 is arranged at the lower part of the tank body 4.

[0023] like Figure 2 As shown, the transmission part 1 includes a frame 12, the frame 12 is connected to the bottom plate of the motor 7, the motor 7 is arranged horizontally, the output shaft of the motor 7 is connected to the high-speed coupling 9, the high-speed coupling 9 is connected to the input shaft of the reducer 10, the output shaft of the reducer 10 is connected to the low-speed coupling 11, the low-speed coupling 11 is connected to the bearing support 13, and a coupling shield 8 is arranged on the upper part of the high-speed coupling 9.

[0024] The high-speed coupling 9 and the low-speed coupling 11 are elastic rod-pin couplings or elastic column-pin couplings; The motor 7 is a speed regulating motor; the reducer 10 is a bevel gear-helical gear box reducer, and the input shaft is perpendicular to the output shaft.

[0025] like Figure 3 As shown, the bearing support 13 includes a main shaft 14 connected to the low-speed coupling 11; a bearing body 18 is provided on the outside of the main shaft 14; a thrust bearing 17 is provided in the middle between the main shaft 14 and the bearing body 18; an upper spherical roller bearing 16 is provided at the upper part between the main shaft 14 and the bearing body 18 above the thrust bearing 17; an upper pressure cover 15 is provided at the upper end of the upper spherical roller bearing 16; a lower spherical roller bearing 19 is provided at the lower part between the main shaft 14 and the bearing body 18 below the thrust bearing 17; a lower pressure cover 20 is provided at the lower end of the lower spherical roller bearing 19; and the lower end of the main shaft 14 is connected to a half coupling 21.

[0026] like Figure 4 As shown, the stirring part 3 includes an upper shaft 22 connected to the half coupling 21; the upper shaft 22 is connected to the lower shaft 23 by bolts; an upper hub 24 is arranged on the upper part of the lower shaft 23; a lower hub 25 is arranged on the lower part of the lower shaft 23; and four blades 26 are respectively installed on the upper hub 24 and the lower hub 25.

[0027] The angle α between the blade 26 and the vertical is in the range of 30° to 60°.

[0028] like Figure 5 As shown, the shaft end fixing device 5 is composed of a bushing 27 and a bracket 28. The bushing 27 is installed in a groove on the upper part of the bracket 28; the legs of the bracket 28 are connected to the bottom plate of the groove body 4.

[0029] The bushing 27 is made of nylon or polyurethane, and the inner diameter D of the bushing 27 is larger than the outer diameter d of the lower end shaft head of the lower end shaft 23, and the difference between the inner diameter D and the outer diameter d is 5 mm to 50 mm.

[0030] like Figure 6 As shown, the inflation device 6 is composed of a vertical pipe 29, a horizontal pipe 30 and a circle pipe 31. The vertical pipe 29 is vertically connected to the horizontal pipe 30, and the horizontal pipe 30 is connected to the circle pipe 31. The vertical pipe 29, the horizontal pipe 30 and the circle pipe 31 are internally connected. The circle pipe 31 is polygonal or circular in shape, and is provided with a plurality of evenly distributed small holes, which can evenly disperse the air entering through the vertical pipe 29.

[0031] When the large double impeller leaching and stirring is working, the motor 7 is energized, the output shaft rotates, and the input shaft of the reducer 10 is driven to rotate through the high-speed coupling 9. The input shaft of the reducer 10 rotates, and the main shaft 14 is driven to rotate through the low-speed coupling 11, and the main shaft 14 drives the stirring part 3 to rotate through the half coupling 21. Under the action of the rotation of the stirring part 3, the slurry in the tank body 4 flows from top to bottom in the center and flows from bottom to top in the periphery, and the rotation of the stirring part 3 produces axial and radial rotation, so that the slurry produces multi-dimensional mixing motion.

[0032] The compressed air passes through the vertical pipe 29, the horizontal pipe 30, and is discharged from the small holes evenly distributed at the bottom of the ring pipe 31. It rises under the pressure of the slurry in the tank body 4, encounters the stirring of the blades 26 and the multi-dimensional movement of the slurry, is fully stirred and mixed, and circulates upward to form a uniform mixed liquid, thereby improving the leaching rate. At the same time, during the rising process of the compressed air, it is crushed by the upper and lower blades 26 twice, diffused into small bubbles, and further enhanced the leaching effect of gold.

[0033] It should be understood that the parts not elaborated in detail in this specification belong to the prior art. The above embodiments are only descriptions of the preferred implementation methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made by ordinary engineers and technicians in this field to the technical solution of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. A large double-impeller leaching stirring tank, comprising a transmission part, a bridge part, a stirring part, and a tank body; the tank body is connected to the bridge part, the bridge part is connected to the transmission part, the transmission part is connected to the stirring part in the tank body, and the bridge part is fixed on the upper part, characterized in that: An axis end fixing device is arranged at the bottom center of the trough body, an inflation device is arranged at the lower part of the trough body, the transmission part comprises a frame, the frame is connected to the motor, the output shaft of the motor is connected to the high-speed coupling, a coupling shield is arranged on the upper part of the high-speed coupling, the high-speed coupling is connected to the input shaft of the reducer, the output shaft of the reducer is connected to the low-speed coupling, the low-speed coupling is connected to the bearing support, the bearing support comprises a main shaft connected to the low-speed coupling; a bearing body is arranged on the outside of the main shaft; a thrust bearing is arranged in the middle between the main shaft and the bearing body; an upper spherical roller bearing is arranged at the upper part between the main shaft and the bearing body above the thrust bearing; an upper pressure cover is arranged at the upper end of the upper spherical roller bearing; a lower spherical roller bearing is arranged at the lower part between the main shaft and the bearing body below the thrust bearing; a lower pressure cover is arranged at the lower end of the lower spherical roller bearing; the lower end of the main shaft is connected to the half coupling.

2. A large double-impeller leaching stirring tank according to claim 1, characterized in that: The stirring part comprises an upper shaft connected to a half coupling; the upper shaft is connected to a lower shaft by bolts; an upper hub is arranged on the upper part of the lower shaft; a lower hub is arranged on the lower part of the lower shaft; and four blades are respectively installed on the upper hub and the lower hub.

3. A large double-impeller leaching stirring tank according to claim 2, characterized in that: The angle α between the blade and the vertical is in the range of 30° to 60°.

4. A large double-impeller leaching stirring tank according to claim 1, characterized in that: The shaft end fixing device is composed of a bushing and a bracket. The bushing is installed in a groove on the upper part of the bracket; the legs of the bracket are connected to the bottom plate of the groove body.

5. A large double-impeller leaching stirring tank according to claim 4, characterized in that: The inner diameter D of the bushing is larger than the outer diameter d of the shaft head at the lower end of the lower shaft, and the difference between the two is 5mm to 50mm.

6. A large double-impeller leaching stirring tank according to claim 1, characterized in that: The inflation device is composed of a vertical tube, a horizontal tube and a ring tube. The vertical tube is vertically connected to the horizontal tube, the horizontal tube is connected to the ring tube, and the vertical tube, the horizontal tube and the ring tube are internally connected. The ring tube is polygonal or circular and is provided with a number of evenly distributed small holes.

7. A large double-impeller leaching stirring tank according to claim 1, characterized in that: The reducer is a bevel gear-helical gear box reducer, and the input shaft is perpendicular to the output shaft.

8. A large double-impeller leaching stirring tank according to claim 1, characterized in that: The motor is a speed-regulating motor, and the motor is arranged horizontally.

9. A large double-impeller leaching stirring tank according to claim 1, characterized in that: The high-speed coupling and the low-speed coupling are elastic rod pin couplings or elastic column pin couplings.

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