Cement clinker manufacturing equipment

Abstract

The cement clinker manufacturing equipment provided by the present invention belongs to the technical field of cement manufacturing equipment, and overcomes the technical defects of the existing roller mill that the grinding disc has a large bearing pressure and is easy to age. The direct-drive motor in the roller mill is driven and connected to the grinding disc and the rolling wheel through a dual-drive reduction mechanism, the output shaft of the reduction mechanism is connected to the rolling wheel, the output shaft sleeve is connected to the grinding disc, the grinding disc is rotatably supported on the machine body, and a closed transmission box is formed between the machine body and the grinding disc. The dual-drive reduction mechanism is arranged in the transmission box, and the direct-drive motor inputs power for bidirectional rotation. After being decelerated by the dual-drive reduction mechanism, the dual-drive rolling strong power is output to drive the grinding disc and the rolling wheel to rotate in opposite directions. The grinding disc and the rolling wheel of the product of the present invention can obtain the dual-drive rolling strong power, which acts on the rolled object together, improves the rolling effect, eliminates the pressure-applying device for the rolling wheel, and improves the grinding efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of cement manufacturing equipment, and in particular relates to cement clinker manufacturing equipment. Background Art

[0002] The vertical roller mill is referred to as the vertical mill. The vertical mill is mainly composed of a powder selector (separator), a roller, a grinding disc, a pressure device, a reducer, an electric motor, a frame and a shell. At present, although the vertical mills of various manufacturers in the world are different, such as the L / M mill produced by Germany's Loesche Company, the UBE mill produced by Japan's Ube Company, the Atox mill produced by Denmark's FLS Company, the RM mill produced by KHD Humboldt Company and the MPS mill produced by Pfeiffer Company, the main difference lies in the different structural combinations of the roller and the grinding disc. The structural forms of the above-mentioned vertical mills have a common feature. The vertical mill reducers installed on the machine body all adopt special vertical reducers. The vertical mill structure adopts a vertical reducer. The grinding disc device is directly placed on the output flange of the vertical mill reducer. Generally, the output flange is connected to the bottom of the grinding disc with bolts, and multiple positioning pins are used to transmit torque. The vertical reducer not only plays the role of reducing speed and transmitting power, driving the grinding disc to rotate, but also bears the gravity of the grinding disc and materials and the grinding pressure. The vertical mill of the above-mentioned structural form has the following shortcomings:

[0003] 1. The vertical reducer changes the transmission direction through planetary gears, cylindrical gear pairs, and spiral bevel gear pairs, and transmits the power of the horizontally arranged main motor to the vertically arranged grinding disc, driving the grinding disc to rotate and achieve the purpose of grinding. This pair of bevel gear pairs is a spiral tooth, generally a Klingenberg tooth system, the bevel gear tooth profile curve is an involute, and the tooth height is a constant height tooth, which is conducive to heavy-duty transmission and has a strong ability to withstand overload and impact, and has the advantages of low assembly accuracy and low error sensitivity, but requires special gear processing equipment.

[0004] Second, since the grinding disc of the mill is directly placed on the output flange of the vertical mill reducer, the output flange must bear the weight of the grinding disc and the grinding pressure, so a special thrust bearing is set at the lower end of the output flange to absorb the high axial load generated by the grinding process. The thrust sliding bearing has a high technical content, and the bearing material requires good emergency running-in performance, corrosion resistance, and high dynamic and static pressure strength. The bearing bush is designed as a fan-shaped block, which is a casting. The bush body is carbon steel and the surface alloy layer is babbitt alloy. This type of bush is manufactured by a domestic professional manufacturer. The thrust sliding bearing needs to use a high-pressure oil pump to supply an equal amount of oil to each bush to form an oil film of a certain thickness, but the large amount of heat generated by friction power consumption also needs to be cooled by providing new oil, so that the new oil is provided by the oil spray pipe placed between the bushes. The position of the oil overflow is required to be higher than the sliding surface, which requires the lubrication and cooling system to be complex, safe and reliable, and the cost is increased.

[0005] 3. Due to the complex structure and high failure rate of vertical reducers, the downtime increases, which increases the use and maintenance costs of the equipment and reduces production efficiency. The static thrust bearing bears the grinding pressure and absorbs the high axial load generated during the grinding process. Iron filings, iron slag or hard impurities that are easy to cause impact should be strictly screened out to avoid impact. The pressure should not be too high. The general roller pressure is 14MPa, which makes the grinding force of the same type of vertical mill lower.

[0006] Among the Chinese patent documents, there is a patent document CN100563835C, published on December 2, 2009, entitled Vertical Roller Mill. The present invention adopts a technical solution that a rotary guide rail is arranged at the bottom of the grinding disc device and supported on the machine body, and is combined with a centering structure to form a new type of compact vertical mill structure. Since the transmission device does not bear the high axial load such as the weight of the grinding disc and the grinding pressure, the transmission device can use a universal reducer, which has the advantages of compact structure and reliable operation, can shorten the downtime, and reduce the use and maintenance costs of the equipment. According to calculations, compared with the use of a vertical reducer, it can save about 20-30% of the one-time investment, and can be widely used in cement grinding, slag grinding and coal slag grinding.

[0007] However, in the above structure, a complex tooth meshing structure is arranged under the turntable. The high load loaded on the rolling wheel will act on the grinding disc. In order to increase the pressure of the rolling wheel on the rolled object, some equipment also adds a hydraulic press to the rolling wheel to increase pressure. These pressures will eventually act on the grinding disc. The grinding disc is under great pressure, which will cause deformation and accelerate aging. How to reduce the pressure on the grinding disc and improve the rolling effect is a technical problem we need to solve. Summary of the invention

[0008] The purpose of the present invention is to provide a cement clinker manufacturing equipment to solve the above technical problems existing in the prior art.

[0009] According to the above purpose, the basic technical scheme of the present invention is: a cement clinker manufacturing equipment, including a roller mill, wherein a grinding disc and a rolling wheel are arranged in the roller mill, the rolling wheel is relatively rotatable and arranged on the grinding disc, and the grinding disc is driven to rotate by a motor, characterized in that: the motor is a direct-drive motor, and the direct-drive motor is driven and connected to the grinding disc and the rolling wheel through a dual-drive reduction mechanism, the output end of the reduction mechanism is provided with an output shaft and an output sleeve, the output sleeve is concentrically rotatably arranged outside the output shaft, the output shaft is connected to the rolling wheel, the output sleeve is connected to the grinding disc, the grinding disc is rotatably supported on the machine body, and a closed transmission box is formed between the machine body and the grinding disc, the dual-drive reduction mechanism is arranged in the transmission box, the direct-drive motor bidirectionally rotates input power, and after being decelerated by the dual-drive reduction mechanism, the dual-drive rolling strong power is output to drive the grinding disc and the rolling wheel to rotate in opposite directions.

[0010] Furthermore, the surface of the grinding disc is inclined with the inside being higher and the outside being lower, and the rolling wheel is conical with the inside being smaller and the outside being larger. When the rolling wheel rotates on the grinding disc, the revolution axis of the rolling wheel and the rotation axis of the grinding disc are on the same straight line.

[0011] Furthermore, a V-groove is provided on the surface of the grinding disc, and the V-groove is triangularly concave. The V-groove is evenly arranged on the circumference of a cone on the surface of the grinding disc, and its two ends are kept at a distance from the inner and outer edges of the upper surface of the grinding disc, and are arranged radially in a ring shape.

[0012] Furthermore, a driving disk is provided between the output shaft and the rolling wheel, and the driving disk is movably connected to the rolling wheel.

[0013] Furthermore, the output shaft is movably connected to the driving disc, and the number of the rolling wheels is two or more, and the rolling wheels are evenly distributed on the surface of the grinding disc.

[0014] Furthermore, a guide rail is provided on the machine body, and a guide wheel is provided under the grinding disc.

[0015] Furthermore, the dual-drive reduction mechanism is a dual-drive double-set planetary gear reduction mechanism, including a fixed frame fixedly mounted on a machine body, a planetary gear rotatably mounted on the fixed frame, the inner side of the planetary gear meshing with the central gear, and the outer side meshing with the lower half of the inner gear ring slidably mounted on the machine body, the upper end of the inner gear ring is connected to the output shaft sleeve through a transmission plate, the upper half of the inner gear ring is also meshed with a planetary gear, the planetary gear is movably mounted on the planetary carrier, the inner side of the planetary gear meshes with the motor shaft gear, the motor shaft gear is directly connected to the motor shaft of the direct drive motor, the upper end of the planetary carrier is connected to the output shaft, and the lower end of the planetary carrier is meshed with the central gear.

[0016] Furthermore, a bearing is provided between the motor shaft of the direct drive motor and the motor body.

[0017] Furthermore, a bearing is provided between the output shaft and the output shaft sleeve.

[0018] In the above-mentioned cement clinker manufacturing equipment, a dust recovery device is provided on the periphery of the grinding disc.

[0019] Compared with the prior art, the advantages and beneficial effects of the present invention are:

[0020] 1. The product of the present invention drives the grinding disc and the rolling wheel by setting a double-drive reduction mechanism, and the grinding disc and the rolling wheel can obtain strong double-drive rolling power, which acts on the rolling object together, thereby improving the rolling effect and efficiency;

[0021] 2. The product of the present invention is provided with a double-drive speed reduction mechanism, which eliminates the pressure device of the rolling wheel, not only saving costs, but also reducing the pressure on the grinding disc and prolonging the service life of the grinding disc;

[0022] 3. The grinding disc of the product of the present invention adopts an inclined surface, and the grinding material can slide by its own weight, which speeds up the movement speed of the material and improves the grinding efficiency;

[0023] 4. The grinding disc of the product of the present invention is provided with a V-groove to prevent the material from radially slipping on the grinding disc and also improve the grinding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the principle structure of an embodiment of the product of the present invention;

[0025] Figure 2 This is a schematic diagram of the principle structure of the upper surface of the grinding disc of the product embodiment of the present invention from a top view;

[0026] Figure 3 It is a schematic diagram of the principle structure of the dual-drive speed reduction mechanism of the product embodiment of the present invention;

[0027] In the figure: 1. grinding disc; 2. rolling wheel; 3. driving disc; 4. output shaft; 5. output shaft sleeve; 6. dual-drive reduction mechanism; 7. machine body; 8. direct drive motor; 9. guide rail; 10. guide wheel; 11. V-groove; 12. bearing; 13. dust recovery device; 61. motor shaft gear; 62. inner ring gear; 63. transmission disc; 64. gear rack; 65. planetary gear; 66. fixed frame; 67. center gear. DETAILED DESCRIPTION

[0028] Combination Figure 1-Figure 3 , is a schematic diagram of the principle structure of an embodiment of a cement clinker manufacturing equipment of the present invention, the cement clinker manufacturing equipment comprises a roller mill, wherein a grinding disc 1 and a rolling wheel 2 are provided in the roller mill, the rolling wheel 2 is relatively rotatably arranged on the grinding disc 1, the grinding disc 1 is driven to rotate by a motor, the motor is a direct drive motor 8, the direct drive motor 8 is drivingly connected to the grinding disc 1 and the rolling wheel 2 through a dual drive reduction mechanism 6, an output end of the reduction mechanism 6 is provided with an output shaft 4 and an output sleeve 5, the output sleeve 5 is concentrically rotatably arranged outside the output shaft 4, the output shaft 4 is connected to the rolling wheel 2, the output sleeve 5 is connected to the grinding disc 1, the grinding disc 1 is rotatably supported on a machine body 7, a closed transmission box is formed between the machine body 7 and the grinding disc 1, the dual drive reduction mechanism 6 is arranged in the transmission box, the direct drive motor 8 bidirectionally rotates input power, after being decelerated by the dual drive reduction mechanism 6, the dual drive rolling strong power is output to drive the grinding disc 1 and the rolling wheel 2 to rotate in opposite directions.

[0029] The surface of the grinding disc 1 is inclined with the inner side higher than the outer side, and the rolling wheel 2 is conical with the inner side smaller than the outer side. When the rolling wheel 2 rotates on the grinding disc 1, the revolution axis of the rolling wheel 2 is on the same straight line as the self-rotation axis of the grinding disc 1. The rolling wheel 2 is conical, so when it rotates, it not only rotates but also revolves. A V-groove 11 is provided on the surface of the grinding disc 1. The V-groove 11 is concave in a triangular shape. The various deformations of the V-groove here can also be made into various other shapes, such as the involute shape of a gear, or a spline shape, or a trapezoidal shape. The V-groove 11 is evenly arranged on the circumference of the conical surface on the surface of the grinding disc 1, and is dense inside near the grinding disc 1 and wide outside. In this way, the material has a large radial resistance in the middle of the grinding disc 1 and will not slip, but will only slide toward the periphery along the direction of the V-groove. Its two ends are kept at a distance from the inner and outer edges of the upper surface of the grinding disc 1, and are arranged in an annular radial manner.

[0030] A driving disk 3 is provided between the output shaft 4 and the rolling wheel 2, and the driving disk 3 is movably connected to the rolling wheel 2. The connection here can be in various forms, such as shaft connection, hook connection, or hinge connection. Since there are many such connection methods in the prior art, they will not be described here; the output shaft 4 is movably connected to the driving disk 3, and the connection here can be a spline pair, or a keyway type, or a shaft rod with screws. Since they are all current technologies, they will not be described in detail. There are three rolling wheels 2, and the rolling wheels 2 are evenly distributed on the surface of the grinding disc 1, and have good balance when rotating.

[0031] A guide rail 9 is provided on the machine body 7, and a guide wheel 10 is provided under the grinding disc 1. To improve the sealing performance, the guide wheel 10 can be offset inward to make the edge of the grinding disc 1 and the machine body 1 into a sliding seal.

[0032] The dual-drive reduction mechanism 6 is a dual-drive double-set planetary gear reduction mechanism, including a fixed frame 66 fixedly mounted on the body 7, a planetary gear 65 is rotatably mounted on the fixed frame 66, the inner side of the planetary gear 65 is meshed with the central gear 67, and the outer side is meshed with the lower half of the inner gear ring 62 slidably mounted on the body 7, the upper end of the inner gear ring 62 is connected to the output shaft sleeve 5 through the transmission plate 63, and the upper half of the inner gear ring 62 is also meshed with the planetary gear 65, the planetary gear 65 is movably mounted on the planetary carrier 64, the inner side of the planetary gear 65 is meshed with the motor shaft gear 61, the motor shaft gear 61 is directly connected to the motor shaft of the direct drive motor 8, the upper end of the planetary carrier 64 is connected to the output shaft 4, and the lower end of the planetary carrier 64 is meshed with the central gear 67, a bearing 12 is provided between the motor shaft of the direct drive motor 8 and the body 7, and the inner and outer rings of the bearing 12 are respectively interference connected with the motor shaft and the body 7.

[0033] A bearing 12 is provided between the output shaft 4 and the output sleeve 5, and the inner and outer rings of the bearing 12 are respectively interference-connected with the output shaft 4 and the output sleeve 5.

[0034] In the cement clinker manufacturing equipment, a dust recovery device 13 is provided on the periphery of the grinding disc 1 to collect the dust generated after grinding on the grinding disc 1 and transfer it to the next process.

[0035] During operation, the direct drive motor 8 is started, and the motor shaft gear 61 rotates forward and reversely under the power of the motor shaft, and the upper planetary gear 65 rotates in the opposite direction, driving the inner gear ring 62 to rotate in the opposite direction, and the lower planetary gear 65 also rotates in the opposite direction. Since the lower fixing frame 66 is fixedly installed on the machine body 7 and remains stationary, the central gear 67 meshing with the inner side of the lower planetary gear 65 rotates forward and reversely, and the planetary frame 64 connected to the central gear 67 also rotates forward and reversely, and the output shaft 4 connected to the planetary frame 64 rotates forward and reversely, and the output shaft sleeve 5 connected to the inner gear ring 62 rotates in the opposite direction. Therefore, the rolling wheel 2 meshing with the output shaft 4 also rotates forward and reversely, and the grinding disc 1 connected to the output shaft sleeve 5 rotates in the opposite direction. The rolling wheel 2 and the grinding disc 1 obtain strong power in opposite directions to each other. Due to the deceleration of the reduction gear system of the dual-drive reduction mechanism 6, it is also the phase of power. Due to the magnification of the times, the power on the rolling wheel 2 and the grinding disc 1 is also upgraded by a corresponding multiple, and they work together on the rolled material. The bottom of the material is supported on the grinding disc 1. Since the surface of the grinding disc 1 is provided with a V-groove, the large material cannot slide radially. Under the interaction of the rolling wheel 2 and the grinding disc 1, it is radially impacted and rolled and quickly crushed. No additional pressure is required on the rolling wheel 2, and the grinding disc 1 will not bear additional pressure. The rolled material is also quickly rolled and ground into powder. Since the surface of the grinding disc 1 is inclined, the material can automatically slide from the middle of the grinding disc 1 along the direction of the V-groove to the edge of the grinding disc 1, and the edge of the upper surface of the grinding disc 1 is not provided with a V-groove. The rolling wheel 2 and the grinding disc 1 can roll in parallel. Under the mutual impact of the rolling wheel 2 and the grinding disc 1, the material is crushed into dust and enters the dust recovery device 13 for collection.

[0036] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0037] Although the following terms are used more frequently in this article: 1. grinding disc; 2. rolling wheel; 3. driving disc; 4. output shaft; 5. output shaft sleeve; 6. double drive reduction mechanism; 7. machine body; 8. direct drive motor; 9. guide rail; 10. guide wheel; 11. V groove; 12. bearing; 13. dust recovery device; 61. motor shaft gear; 62. inner gear ring; 63. transmission disc; 64. gear rack; 65. planetary gear; 66. fixed frame; 67. central gear, etc., the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

[0038] The cement clinker manufacturing equipment provided by the present invention is introduced above. In the introduction, specific preferred embodiments are used to illustrate the principles and implementation methods of the present invention. These embodiments are only used to help understand the principles and core ideas of the present invention. It should be pointed out that for ordinary technicians in this field, without departing from the design ideas of the present invention, the implementation plans in the above embodiments can be further combined or replaced, and the present invention can be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A cement clinker manufacturing device, comprising a roller mill, wherein the roller mill is provided with a grinding disc (1) and a rolling wheel (2), wherein the rolling wheel (2) is relatively rotatably arranged on the grinding disc (1), and the grinding disc (1) is driven to rotate by a motor, characterized in that: The motor is a direct-drive motor (8), which is connected to the grinding disc (1) and the rolling wheel (2) through a dual-drive reduction mechanism (6). The output end of the dual-drive reduction mechanism (6) is provided with an output shaft (4) and an output shaft sleeve (5). The output shaft sleeve (5) is rotatably arranged outside the output shaft (4). The output shaft (4) is connected to the rolling wheel (2). The output shaft sleeve (5) is connected to the grinding disc (1). The grinding disc (1) is rotatably supported on the machine body (7). A closed transmission box is formed between the machine body (7) and the grinding disc (1). The dual-drive reduction mechanism (6) is arranged in the transmission box. The direct-drive motor (8) inputs power for bidirectional rotation. After being decelerated by the dual-drive reduction mechanism (6), the dual-drive rolling strong power is output to drive the grinding disc (1) and the rolling wheel (2) to rotate in opposite directions. The surface of the grinding disc (1) is inclined with a high inside and a low outside, and the rolling wheel (2) is conical with a small inside and a large outside. When the rolling wheel (2) rotates on the grinding disc (1), the revolution axis of the rolling wheel (2) and the rotation axis of the grinding disc (1) are on the same straight line; The surface of the grinding disc (1) is provided with a V-groove (11), the V-groove (11) is triangularly concave, and the V-groove (11) is evenly arranged on the circumference of a conical surface on the surface of the grinding disc (1), and its two ends are kept at a distance from the inner and outer edges of the upper surface of the grinding disc (1), and are arranged in an annular radial pattern; A driving disc (3) is provided between the output shaft (4) and the rolling wheel (2), and the driving disc (3) and the rolling wheel (2) are movably connected; A guide rail (9) is provided on the machine body (7), and a guide wheel (10) is provided below the grinding disc (1); The dual-drive reduction mechanism (6) is a dual-drive dual-set planetary gear reduction mechanism, comprising a fixed frame (66) fixedly mounted on a machine body (7), a first planetary gear rotatably mounted on the fixed frame (66), the inner side of the first planetary gear meshing with a central gear (67), and the outer side meshing with a lower half of an inner gear ring (62) slidably mounted on the machine body (7), the upper end of the inner gear ring (62) being connected to an output shaft sleeve (5) via a transmission plate (63), the upper half of the inner gear ring (62) also meshing with a second planetary gear, the second planetary gear being movably mounted on a planet carrier (64), the inner side of the second planetary gear meshing with a motor shaft gear (61), the motor shaft gear (61) being directly connected to a motor shaft of a direct-drive motor (8), the upper end of the planet carrier (64) being connected to an output shaft (4), and the lower end of the planet carrier (64) being meshingly connected to a central gear (67).

2. The cement clinker manufacturing equipment according to claim 1, characterized in that: The output shaft (4) is movably connected to the driving disc (3), two or more rolling wheels (2) are provided, and the rolling wheels (2) are evenly distributed on the surface of the grinding disc (1).

3. The cement clinker manufacturing equipment according to claim 1, characterized in that: A bearing (12) is provided between the motor shaft of the direct drive motor (8) and the machine body (7).

4. The cement clinker manufacturing equipment according to claim 1, characterized in that: A bearing (12) is provided between the output shaft (4) and the output shaft sleeve (5).

5. The cement clinker manufacturing equipment according to any one of claims 1 to 4, characterized in that: A dust recovery device (13) is provided on the outer periphery of the grinding disc (1).

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