Multi-section type gold ore efficient drying rotary kiln system

Abstract

The utility model relates to the technical field of rotary kilns, in particular to a multi-section type gold ore efficient drying rotary kiln system which comprises an outer cylinder, the inner wall of the outer cylinder is rotationally connected with an inner cylinder through a bearing, and the left end of the inner cylinder is rotationally embedded in the left side of the outer cylinder through a bearing. Due to the fact that the rotating direction of the first spiral blade is opposite to the direction of the second spiral blade, when the rotating shaft of the second motor rotates positively, the first spiral blade turns over mineral aggregate on the right side in the inner barrel to the left side, the mineral aggregate in the inner barrel is turned over through rotation of the inner barrel, and the drying efficiency is improved; then, a rotating shaft of a second motor is controlled to rotate reversely, so that the direction of a first spiral blade is opposite to that of the first spiral blade, the preheated mineral aggregate in the upper inner barrel is conveyed rightwards into a cover body, then the mineral aggregate is discharged into the middle inner barrel through a discharging pipe and a feeding hopper, the process is repeated in sequence in the same way, and drying and heat preservation are achieved; therefore, the multi-stage microwave drying device has the advantage of combining a multi-stage heating technology and a microwave heating technology, and the drying time is greatly shortened.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln technology, specifically a multi-stage high-efficiency rotary kiln system for drying gold ore. Background Technology

[0002] A gold ore drying rotary kiln is a piece of equipment used for drying gold ore materials. It combines the rotational characteristics of a rotary kiln with a heating system to achieve the drying of gold ore materials during continuous production.

[0003] Research and analysis have revealed that traditional rotary kilns for drying gold ore still have the following drawbacks to some extent.

[0004] For example, traditional gold ore drying methods often use a single kiln structure, which has a "cold center" phenomenon, resulting in uneven heating of materials, low drying efficiency, and high energy consumption. In addition, the single kiln structure is difficult to adapt to the drying needs of different gold ore materials and has poor flexibility. In order to solve the above technical problems, we have designed a multi-stage high-efficiency rotary kiln system for gold ore drying. Utility Model Content

[0005] The purpose of this utility model is to provide a multi-stage high-efficiency rotary kiln system for drying gold ore. It has the advantages of multi-stage preheating, drying and heat preservation, and efficient and uniform drying. It solves the problems of the fact that most drying methods use a single kiln structure, which has a "cold center" phenomenon, resulting in uneven heating of materials and low drying efficiency. In addition, the single kiln structure is difficult to adapt to the drying needs of different gold minerals and has poor flexibility.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage high-efficiency rotary kiln system for drying gold ore, comprising an outer cylinder, an inner cylinder rotatably connected to the inner wall of the outer cylinder via bearings, the left end of the inner cylinder being rotatably embedded in the left side of the outer cylinder via bearings, the right end of the inner cylinder being rotatably embedded in the right side of the outer cylinder via bearings, a feed hopper being fixedly connected to the left side of the outer cylinder via a support rod, one end of the feed hopper being rotatably connected to the inner wall of the left end of the inner cylinder via a bearing, a drive mechanism being installed on the surface of the outer cylinder, and a conveying mechanism being installed on the surface of the inner cylinder;

[0007] The drive mechanism includes a driven gear, a short rod, a drive gear, a pulley, a belt, and a motor. The conveying mechanism includes a rotating rod, a spiral blade, a spiral blade, a support plate, a vertical rod, a bevel gear, a motor, an electric telescopic rod, a connecting plate, a connecting rod, and a bevel gear. A cover is fitted onto the right end of the inner cylinder via a bearing. The bottom of the cover is connected to a discharge pipe. A microwave heater is fixedly installed on the inner wall of the outer cylinder.

[0008] Preferably, the driven gear is fixedly sleeved on the surface of the left end of the inner cylinder, the left end of the short rod is rotatably embedded in the front side of the left side of the outer cylinder through a bearing, the left side of the driving gear is fixedly connected to the right end of the short rod, and the driven gear meshes with the driving gear.

[0009] Preferably, the pulley is fixedly sleeved on the surface of the left end of the short rod, the belt drive is sleeved on the surface of the pulley, one side of the motor is fixedly connected to the left side of the outer cylinder through a support, and the rotating shaft of the motor is fixedly connected to the left end of the short rod.

[0010] Preferably, the right end of the rotating rod is rotatably embedded in the right side of the inner cylinder via a bearing, a set of spiral blades is welded to the surface of the right end of the rotating rod, a second set of spiral blades is welded to the surface of the left end of the rotating rod, the left end of the support plate is fixedly connected to the bottom of the right side of the cover via bolts, the vertical rod is rotatably embedded in the surface of the right end of the support plate via a bearing, a set of bevel gears is welded to the surface of the vertical rod, and one side of the second motor is fixedly connected to the right side of the cover via a support plate.

[0011] Preferably, the left end of the electric telescopic rod is fixedly connected to the rear side of the right side of the outer cylinder by bolts, the right end of the electric telescopic rod is fixedly connected to the rear end of the connecting plate by bolts, the right end of the connecting rod is rotatably embedded in the front surface of the connecting plate by bearings, the left end of the connecting rod is slidably inserted into the inside of the right end of the rotating rod, and the left side of the second bevel gear is fixedly connected to the right end of the rotating rod.

[0012] Preferably, the left side of the cover is fixedly connected to the right side of the outer cylinder via a support rod, and a temperature and humidity sensor is threadedly embedded in the top of the cover. A through hole is opened on the surface of the right end of the inner cylinder, and a sealing control valve is installed on both the feed hopper and the feed hopper.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention controls the operation of three microwave heaters to heat three inner cylinders to different degrees, resulting in varying internal temperatures. Ore is then added to the upper feed hopper. The operation of motor one and the forward rotation of motor two are controlled, along with the extension of the upper electric telescopic rod, which moves the connecting plate, connecting rod, and bevel gear two. This causes the upper bevel gears one and two to mesh. The rotation of the motor two shaft drives the vertical rod and the bevel gear one on it to rotate, which in turn causes the upper bevel gear two, rotating rod, spiral blade one, and spiral blade two to rotate. The rotation of spiral blade two facilitates the discharge of ore from the feed hopper into the inner cylinder, thus providing the advantage of convenient feeding.

[0015] This invention utilizes the opposite rotation direction of the first spiral blade to the second spiral blade. When the second motor shaft rotates forward, the first spiral blade tumbles the ore on the right side of the inner cylinder to the left. The rotation of the first motor shaft, driven by the pulley and belt, causes the short rod and the drive gear to rotate, which in turn causes the driven gear and the inner cylinder to rotate, thus tumbling the ore in the inner cylinder and improving drying efficiency. Then, controlling the second motor shaft to rotate in the opposite direction makes the first spiral blade rotate in the opposite direction, conveying the preheated ore in the upper inner cylinder to the right into the hood, and then discharging it into the middle inner cylinder through the discharge pipe and feed hopper. This process is repeated sequentially to achieve drying and heat preservation. This invention combines the advantages of multi-stage and microwave heating technology, significantly shortening drying time, improving drying efficiency, and heating the material inside and out simultaneously, avoiding the "cold center" phenomenon and ensuring uniform drying. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a left-side stereoscopic view of the present invention;

[0018] Figure 3 This is a partial cross-sectional perspective view of the present invention;

[0019] Figure 4 This utility model Figure 3 Enlarged diagram of A in the middle;

[0020] Figure 5 This is a partial cross-sectional perspective view of the outer cylinder of this utility model.

[0021] In the diagram: 1. Outer cylinder; 2. Inner cylinder; 3. Feed hopper; 4. Drive mechanism; 41. Driven gear; 42. Short rod; 43. Drive gear; 44. Pulley; 45. Belt; 46. Motor 1; 5. Conveying mechanism; 51. Rotating rod; 52. Spiral blade 1; 53. Spiral blade 2; 54. Support plate; 55. Vertical rod; 56. Bevel gear 1; 57. Motor 2; 58. Electric telescopic rod; 59. Connecting plate; 510. Connecting rod; 511. Bevel gear 2; 6. Cover; 7. Discharge pipe; 8. Microwave heater; 9. Temperature and humidity sensor; 10. Through hole. Detailed Implementation

[0022] Please see Figures 1-5A multi-stage high-efficiency rotary kiln system for drying gold ore includes an outer cylinder 1. An inner cylinder 2 is rotatably connected to the inner wall of the outer cylinder 1 via bearings. The left end of the inner cylinder 2 is rotatably embedded in the left side of the outer cylinder 1 via bearings, and the right end of the inner cylinder 2 is rotatably embedded in the right side of the outer cylinder 1 via bearings. A feed hopper 3 is fixedly connected to the left side of the outer cylinder 1 via a support rod. One end of the feed hopper 3 is rotatably connected to the inner wall of the left end of the inner cylinder 2 via a bearing. A drive mechanism 4 is installed on the surface of the outer cylinder 1, and a conveying mechanism 5 is installed on the surface of the inner cylinder 2.

[0023] The drive mechanism 4 includes a driven gear 41, a short rod 42, a drive gear 43, a pulley 44, a belt 45, and a motor 46. The conveying mechanism 5 includes a rotating rod 51, a spiral blade 52, a spiral blade 53, a support plate 54, a vertical rod 55, a bevel gear 56, a motor 57, an electric telescopic rod 58, a connecting plate 59, a connecting rod 510, and a bevel gear 511. The surface of the right end of the inner cylinder 2 is fitted with a cover 6 through a bearing. The bottom of the cover 6 is connected to a discharge pipe 7. A microwave heater 8 is fixedly installed on the inner wall of the outer cylinder 1.

[0024] Please see Figure 2 and Figure 3 The driven gear 41 is fixedly sleeved on the surface of the left end of the inner cylinder 2. By setting the driven gear 41, it rotates under the drive of the driving gear 43, thereby driving the inner cylinder 2 to rotate. The left end of the short rod 42 is rotatably embedded in the front side of the left side of the outer cylinder 1 through the bearing. The left side of the driving gear 43 is fixedly connected to the right end of the short rod 42, and the driven gear 41 meshes with the driving gear 43.

[0025] Please see Figure 2 and Figure 3 The belt pulley 44 is fixedly sleeved on the surface of the left end of the short rod 42, and the belt 45 is driven by the belt pulley 44. By setting the belt pulley 44 and the belt 45, the rotation of multiple rotating rods 51 is realized under the drive of a motor 46, thereby making multiple inner cylinders 2 rotate simultaneously. One side of the motor 46 is fixedly connected to the left side of the outer cylinder 1 through a support, and the rotating shaft of the motor 46 is fixedly connected to the left end of the short rod 42.

[0026] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5The right end of the rotating rod 51 is rotatably embedded in the right side of the inner cylinder 2 via a bearing. The first spiral blade 52 is sleeved and welded to the surface of the right end of the rotating rod 51. By setting the first spiral blade 52, the ore in the inner cylinder 2 is conveyed in different directions when it rotates forward or backward. The second spiral blade 53 is sleeved and welded to the surface of the left end of the rotating rod 51. By setting the second spiral blade 53, the ore in the feed hopper 3 is better discharged into the inner cylinder 2 when it rotates forward. The left end of the support plate 54 is fixedly connected to the bottom of the right side of the cover 6 via bolts. The vertical rod 55 is rotatably embedded in the surface of the right end of the support plate 54 via a bearing. The first bevel gear 56 is sleeved and welded to the surface of the vertical rod 55. One side of the second motor 57 is fixedly connected to the right side of the cover 6 via a support plate.

[0027] Please see Figure 3 , Figure 4 and Figure 5 The left end of the electric telescopic rod 58 is fixedly connected to the rear side of the right side of the outer cylinder 1 by bolts. By setting the electric telescopic rod 58, its extension and retraction drive the connecting plate 59 to move, which in turn drives the connecting rod 510 and the second bevel gear 511 on it to move, controlling the meshing and disengagement of the second bevel gear 511 and the first bevel gear 56. The right end of the electric telescopic rod 58 is fixedly connected to the rear end of the connecting plate 59 by bolts. The right end of the connecting rod 510 is rotatably embedded in the front surface of the connecting plate 59 by bearings. By setting the connecting rod 510, when the connecting plate 59 moves, it can drive the connecting rod 59 to move. When the second bevel gear 511 rotates, its rotation can drive the rotating rod 51 to rotate. The left end of the connecting rod 510 is slidably inserted into the inside of the right end of the rotating rod 51. The left side of the second bevel gear 511 is fixedly connected to the right end of the rotating rod 51.

[0028] Please see Figure 1 , Figure 3 , Figure 4 and Figure 5 The left side of the cover 6 is fixedly connected to the right side of the outer cylinder 1 via a support rod. A temperature and humidity sensor 9 is threadedly embedded in the top of the cover 6. By setting the temperature and humidity sensor 9, the temperature, humidity and other parameters of each section are monitored in real time, and the heating power and kiln speed are automatically adjusted. A through hole 10 is opened on the surface of the right end of the inner cylinder 2. The ore material conveyed to the right side of the inner cylinder 2 is discharged into the cover 6 through the through hole 10, and then discharged through the feed hopper 3. Both the feed hopper 3 and the feed hopper 3 are equipped with sealing control valves. By setting the sealing control valves, the sections are sealed to prevent heat loss.

[0029] In use, the operation of three microwave heaters 8 is controlled to heat the three inner cylinders 2 to different degrees, resulting in different internal temperatures. The ore is added into the upper feed hopper 3. The operation of motor 1 46 and the forward rotation of motor 2 57 are controlled, and the extension of the upper electric telescopic rod 58 is controlled, causing the connecting plate 59, connecting rod 510, and bevel gear 2 511 to move. This causes the two upper bevel gears 1 56 and bevel gear 2 511 to mesh. The rotation of the shaft of motor 2 57 drives the vertical rod 55 and the bevel gear 1 56 on it to rotate, which in turn causes the upper bevel gear 2 511, rotating rod 51, spiral blade 1 52, and spiral blade 2 53 to rotate. The rotation of spiral blade 2 53 facilitates the feeding of the ore from the feed hopper 3 into the inner cylinder 2. The rotation of spiral blade 1 52 and spiral blade 2 53... In the opposite direction, when the shaft of motor 2 57 rotates forward, the spiral blade 52 flips the ore material on the right side of the inner cylinder 2 to the left. The rotation of the shaft of motor 1 46, driven by the pulley 44 and belt 45, causes the short rod 42 and the drive gear 43 to rotate, which in turn causes the driven gear 41 and the inner cylinder 2 to rotate, thus flipping the ore material in the inner cylinder 2 and improving the drying efficiency. Then, the reverse rotation of the shaft of motor 2 57 is controlled so that the spiral blade 52 is in the opposite direction to the previous one, conveying the preheated ore material in the upper inner cylinder 2 to the right into the cover 6, and then into the middle inner cylinder 2 through the discharge pipe 7 and the feed hopper 3. The process is repeated in the same way to achieve drying and heat preservation. It can combine multi-stage and microwave heating technology, which greatly shortens the drying time and improves the drying efficiency. The material is heated inside and out at the same time, avoiding the "cold center" phenomenon and ensuring uniform drying.

[0030] In summary, this multi-stage high-efficiency rotary kiln system for drying gold ore, through the cooperation of outer cylinder 1, inner cylinder 2, feed hopper 3, drive mechanism 4, conveying mechanism 5, hood 6, discharge pipe 7 and microwave heater 8, solves the problems of the "cold center" phenomenon that often occurs in drying methods that use a single kiln structure, resulting in uneven heating of materials and low drying efficiency. In addition, the single kiln structure is difficult to adapt to the drying requirements of different gold ore materials and has poor flexibility.

Claims

1. A multi-stage high-efficiency rotary kiln system for drying gold ore, comprising an outer cylinder (1), characterized in that: The inner wall of the outer cylinder (1) is rotatably connected to the inner cylinder (2) via a bearing. The left end of the inner cylinder (2) is rotatably embedded in the left side of the outer cylinder (1) via a bearing, and the right end of the inner cylinder (2) is rotatably embedded in the right side of the outer cylinder (1) via a bearing. The left side of the outer cylinder (1) is fixedly connected to the feed hopper (3) via a support rod. One end of the feed hopper (3) is rotatably connected to the inner wall of the left end of the inner cylinder (2) via a bearing. A drive mechanism (4) is installed on the surface of the outer cylinder (1), and a conveying mechanism (5) is installed on the surface of the inner cylinder (2). The drive mechanism (4) includes a driven gear (41), a short rod (42), a drive gear (43), a pulley (44), a belt (45), and a motor (46). The conveying mechanism (5) includes a rotating rod (51), a spiral blade (52), a spiral blade (53), a support plate (54), a vertical rod (55), a bevel gear (56), a motor (57), an electric telescopic rod (58), a connecting plate (59), a connecting rod (510), and a bevel gear (511). The surface of the right end of the inner cylinder (2) is fitted with a cover (6) through a bearing. The bottom of the cover (6) is connected to a discharge pipe (7). A microwave heater (8) is fixedly installed on the inner wall of the outer cylinder (1).

2. The multi-stage high-efficiency rotary kiln system for drying gold ore according to claim 1, characterized in that: The driven gear (41) is fixedly sleeved on the surface of the left end of the inner cylinder (2). The left end of the short rod (42) is rotatably embedded in the front side of the left side of the outer cylinder (1) through a bearing. The left side of the driving gear (43) is fixedly connected to the right end of the short rod (42). The driven gear (41) meshes with the driving gear (43).

3. The multi-stage high-efficiency rotary kiln system for drying gold ore according to claim 1, characterized in that: The pulley (44) is fixedly sleeved on the surface of the left end of the short rod (42), the belt (45) is sleeved on the surface of the pulley (44), one side of the motor (46) is fixedly connected to the left side of the outer cylinder (1) through the support, and the shaft of the motor (46) is fixedly connected to the left end of the short rod (42).

4. The multi-stage high-efficiency rotary kiln system for drying gold ore according to claim 1, characterized in that: The right end of the rotating rod (51) is rotatably embedded in the right side of the inner cylinder (2) through a bearing. The first spiral blade (52) is sleeved and welded to the surface of the right end of the rotating rod (51). The second spiral blade (53) is sleeved and welded to the surface of the left end of the rotating rod (51). The left end of the support plate (54) is fixedly connected to the bottom of the right side of the cover (6) by bolts. The vertical rod (55) is rotatably embedded in the surface of the right end of the support plate (54) through a bearing. The first bevel gear (56) is sleeved and welded to the surface of the vertical rod (55). One side of the second motor (57) is fixedly connected to the right side of the cover (6) through a support plate.

5. The multi-stage high-efficiency rotary kiln system for drying gold ore according to claim 1, characterized in that: The left end of the electric telescopic rod (58) is fixedly connected to the rear side of the right side of the outer cylinder (1) by bolts. The right end of the electric telescopic rod (58) is fixedly connected to the rear end of the connecting plate (59) by bolts. The right end of the connecting rod (510) is rotatably embedded in the front surface of the connecting plate (59) by bearings. The left end of the connecting rod (510) is slidably inserted into the inside of the right end of the rotating rod (51). The left side of the second bevel gear (511) is fixedly connected to the right end of the rotating rod (51).

6. The multi-stage high-efficiency rotary kiln system for drying gold ore according to claim 1, characterized in that: The left side of the cover (6) is fixedly connected to the right side of the outer cylinder (1) by a support rod. A temperature and humidity sensor (9) is threaded through and embedded in the top of the cover (6). A through hole (10) is opened on the surface of the right end of the inner cylinder (2). A sealing control valve is installed on both the feed hopper (3) and the feed hopper (3).

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