Cement production raw material grinding quantitative feeding device

Abstract

The utility model relates to the technical field of cement raw material grinding, and discloses a cement production raw material grinding quantitative feeding device which comprises a mounting frame and a plurality of groups of supporting rods fixedly connected to the lower end of the mounting frame, and the inner wall of the mounting frame is rotationally connected with a transmission roller group and a weighing roller group. The center of the upper mounting frame is fixedly connected with an electric push rod, the output end of the electric push rod penetrates through a bottom plate of the upper mounting frame, the output end of the electric push rod is fixedly connected with an auxiliary frame, the inner wall of the auxiliary frame is rotationally connected with an auxiliary roller, and the auxiliary roller is in transmission connection with the inner wall of the conveying belt; the driving electric push rod stretches out and draws back to drive the auxiliary frame and the auxiliary roller to move up and down, the auxiliary roller exerts downward pressure or relaxation tension on the belt through transmission contact with the inner wall of the belt, tension loss is dynamically compensated, and therefore belt deviation and slipping are effectively restrained, and it is guaranteed that the actual running speed of the belt is consistent with the detection rotating speed.

Description

Technical Field

[0001] This utility model relates to the field of cement raw material grinding technology, and in particular to a quantitative feeding device for cement production raw material grinding. Background Technology

[0002] In the cement production raw material grinding process, quantitative feeding is a core step to ensure accurate raw material proportioning and stable subsequent grinding efficiency. Variable speed belt quantitative feeders, with their simple structure and convenient control, have become the mainstream quantitative conveying equipment for various raw materials such as clinker, limestone, and slag. Through the collaborative logic of weighing detection and speed adjustment, they achieve continuous feeding of raw materials according to a preset proportion, laying the foundation for efficient cement grinding. However, in actual working conditions, existing variable speed belt quantitative feeders suffer from dynamic fluctuations in belt tension due to the impact of falling raw materials, belt fatigue, roller wear, and aging of the roller coating. This tension imbalance can cause belt misalignment and slippage, thereby compromising the weighing detection benchmark and leading to deviations in quantitative accuracy. Utility Model Content

[0003] The technical problem to be solved by this utility model is that the existing technology has the disadvantage that the dynamic fluctuation of belt tension is directly caused by factors such as the impact of falling raw materials, belt elastic fatigue, roller wear, and roller coating aging. To this end, we propose a quantitative feeding device for grinding raw materials for cement production.

[0004] To achieve the above objectives, this application adopts the following technical solution: a quantitative feeding device for grinding cement production raw materials, comprising a mounting frame and multiple sets of support rods fixedly connected to the lower end of the mounting frame. A transmission roller group and a weighing roller group are rotatably connected to the inner wall of the mounting frame. A conveyor belt is tractively connected to the outer walls of the transmission roller group and the weighing roller group. A tension control assembly is provided on the inner wall of the conveyor belt. The tension control assembly includes an upper frame fixedly connected to the inner wall of the mounting frame. An electric actuator is fixedly connected to the center of the upper frame. The output end of the electric actuator penetrates the bottom plate of the upper frame. An auxiliary frame is fixedly connected to the output end of the electric actuator. An auxiliary roller is rotatably connected to the inner wall of the auxiliary frame. The auxiliary roller is tractively connected to the inner wall of the conveyor belt.

[0005] Furthermore, a side mounting plate is fixedly connected to one side of the auxiliary frame, and a movable inner rod is fixedly connected to the lower end of the side mounting plate. A movable outer rod is slidably connected to the outer wall of the movable inner rod, and a control plate is fixedly connected to the lower end of the movable outer rod. The vertical lifting and lowering of the auxiliary roller is ensured by the sliding cooperation of the movable inner rod along the movable outer rod.

[0006] Furthermore, the control plate is disposed between the two sets of support rods, and the inner walls of the two sets of support rods are provided with control channels.

[0007] Furthermore, the control plate is slidably connected to the inner wall of the control channel, and a first connecting plate and a second connecting plate are fixedly connected to the bottom and top of one set of control channels. A motor is installed at the upper end of the second connecting plate, and a threaded rod is fixedly connected to the output end of the motor.

[0008] Furthermore, the upper end of the threaded rod passes through the first connecting plate and is connected to the first connecting plate in a transmission manner. The lower end of the threaded rod is rotatably connected to the second connecting plate. The threaded rod passes through the control plate and is threadedly connected to the control plate. When the motor is started, the threaded rod is driven to rotate, which can drive the control plate to slide up and down along the control channel, thereby adjusting the support height of the movable outer rod.

[0009] Furthermore, an upper mounting plate is fixedly connected to the upper end of the mounting frame, and a feed hopper is fixedly connected to the inner wall of the upper mounting plate for laying materials on the conveyor belt.

[0010] The technical effects and advantages of this utility model are as follows:

[0011] In this invention, the drive electric actuator extends and retracts, causing the auxiliary frame and auxiliary roller to move up and down. The auxiliary roller applies downward pressure or relaxes tension on the belt through transmission contact with the inner wall of the belt, dynamically compensating for tension loss. During this process, the movable inner rod at the side end of the auxiliary frame slides along the movable outer rod, cooperating with the limit guide of the control plate in the control channel of the support rod to ensure that the auxiliary roller moves only in the vertical direction, avoiding lateral deviation that interferes with the tension adjustment accuracy. This effectively suppresses belt deviation and slippage, ensuring that the actual running speed of the belt is consistent with the detection speed. This solves the problem that in the actual working conditions of existing speed-regulating belt quantitative feeding devices, factors such as the impact of falling raw materials, belt elastic fatigue, roller wear, and roller rubber aging can directly cause dynamic fluctuations in belt tension. Tension imbalance can lead to belt deviation and slippage, thereby destroying the weighing detection benchmark and causing quantitative accuracy deviation. Attached Figure Description

[0012] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall planar structure of the present invention;

[0015] Figure 3 This is a schematic diagram of the tension control component of this utility model;

[0016] Figure 4For the present utility model Figure 3 A magnified structural diagram at point A;

[0017] Figure 5 This is a schematic diagram of the control plate and threaded rod structure of this utility model.

[0018] Legend: 1. Mounting frame; 2. Support rod; 3. Weighing roller assembly; 4. Conveyor belt; 5. Upper mounting plate; 6. Feed hopper; 7. Tension control assembly; 71. Upper mounting frame; 72. Electric actuator; 73. Auxiliary frame; 74. Auxiliary roller; 75. Side mounting plate; 76. Movable inner rod; 77. Movable outer rod; 78. Control plate; 79. Control channel; 710. First connecting plate; 711. Second connecting plate; 712. Motor; 713. Threaded rod. Detailed Implementation

[0019] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0020] Reference Figures 1-5 As shown, in order to solve the problem that existing variable speed belt quantitative feeding devices, under actual working conditions, suffer from dynamic fluctuations in belt tension due to the impact of falling raw materials, belt elastic fatigue, idler wear, and roller rubber aging, which can lead to belt misalignment and slippage, thereby compromising the weighing and detection benchmark and causing quantitative accuracy deviations, the following preferred technical solution is provided:

[0021] A quantitative feeding device for cement production raw material grinding includes a mounting frame 1 and multiple sets of support rods 2 fixedly connected to the lower end of the mounting frame 1. A drive roller group and a weighing roller group 3 are rotatably connected to the inner wall of the mounting frame 1, and a conveyor belt 4 is driven to the outer walls of both the drive roller group and the weighing roller group 3. The weighing roller group 3 has a built-in weighing sensor. The drive roller group provides power to the conveyor belt 4 for continuous material conveying, while the weighing roller group 3 detects the weight of the material on the conveyor belt 4 in real time through close contact. An upper loading plate 5 is fixedly connected to the upper end of the mounting frame 1, and a feed hopper 6 is fixedly connected to the inner wall of the upper loading plate 5. The upper end of the feed hopper 6 is externally connected to the outlet of a cement production raw material blending silo, such as a clinker silo, desulfurized gypsum silo, limestone silo, slag silo, or fly ash silo. The raw materials are discharged through the bottom unloading structure of the blending silo. The raw material is fed onto the conveyor belt 4 through the feed hopper 6. The feed hopper 6 can lay the raw material on the conveyor belt 4. The inner wall of the conveyor belt 4 is provided with a tension control component 7. This component includes an upper frame 71 fixedly connected to the inner wall of the mounting frame 1. An electric push rod 72 is fixedly connected to the center of the upper frame 71. The output end of the electric push rod 72 passes through the bottom plate of the upper frame 71, and an auxiliary frame 73 is fixedly connected to the output end of the electric push rod 72. An auxiliary roller 74 is rotatably connected to the inner wall of the auxiliary frame 73. The auxiliary roller 74 is connected to the inner wall of the conveyor belt 4 through a transmission connection. By extending and retracting the electric push rod 72, the auxiliary frame 73 and the auxiliary roller 74 can be moved up and down. With the help of the auxiliary roller 74 pressing down or relaxing the conveyor belt 4, the belt tension is dynamically adjusted, thereby suppressing the tension imbalance caused by the fluctuation of working conditions and reducing the phenomenon of deviation and slippage.

[0022] A side mounting plate 75 is fixedly connected to one side of the auxiliary frame 73. A movable inner rod 76 is fixedly connected to the lower end of the side mounting plate 75. A movable outer rod 77 is slidably connected to the outer wall of the movable inner rod 76. The sliding fit between the movable inner rod 76 and the movable outer rod 77 forms a guide structure. The lower end of the movable outer rod 77 overlaps on the control plate 78. The control plate 78 is set between the two sets of support rods 2, and the inner walls of the two sets of support rods 2 are provided with control channels 79. The control plate 78 is slidably connected to the inner wall of the control channel 79. When the auxiliary roller 74 moves down normally to adjust the tension, the control plate 78 remains fixed and is guided only by the sliding fit of the movable inner rod 76 along the movable outer rod 77 to ensure that the auxiliary roller 74 rises and falls vertically and avoids lateral displacement that affects the tension adjustment accuracy.

[0023] One set of control channels 79 has a first connecting plate 710 and a second connecting plate 711 fixedly connected to its bottom and top, respectively. A motor 712 is mounted on the upper end of the second connecting plate 711. A threaded rod 713 is fixedly connected to the output end of the motor 712. The upper end of the threaded rod 713 passes through the first connecting plate 710 and is drively connected to the first connecting plate 710. The lower end of the threaded rod 713 is rotatably connected to the second connecting plate 711. Simultaneously, the threaded rod 713 passes through a control plate 78 and is connected to the control plate 711. 8. Threaded connection; When it is necessary to expand the tension adjustment stroke of the auxiliary roller 74, the motor 712 is started to drive the threaded rod 713 to rotate, which can drive the control plate 78 to slide up and down along the control channel 79, thereby adjusting the support height of the movable outer rod 77, providing a larger lifting space for the auxiliary roller 74, and working with the electric push rod 72 to achieve a wider range of tension adjustment, ensuring that the belt tension is always maintained in the optimal range, ensuring the stability of the weighing detection benchmark, and ultimately improving the quantitative feeding accuracy to meet the stringent requirements of cement production for raw material ratio.

[0024] Specifically, after the material in the raw material mixing silo is discharged through the bottom unloading structure, it is laid on the conveyor belt 4 through the feed hopper 6. The conveyor belt 4 runs continuously under the power drive of the transmission roller group. At this time, the weighing roller group 3 is in close contact with the inner wall of the belt, converting the weight of the material per unit length on the belt into an electrical signal in real time, and comparing it with the preset raw material ratio parameters. When the comparison finds a flow deviation or belt tension fluctuations caused by raw material impact, belt elastic fatigue, idler wear, etc., the drive electric actuator 72 extends and retracts, driving the auxiliary frame 73 and auxiliary roller 74 to move up and down. The auxiliary roller 74 applies downward pressure or relaxes the tension of the belt through transmission contact with the inner wall of the belt, dynamically compensating for tension loss. During the process, the movable inner rod 76 at the side end of the auxiliary frame 73 slides along the movable outer rod 77, cooperating with the limiting guide of the control plate 78 in the control channel 79 of the support rod 2 to ensure that the auxiliary roller 74 moves only in the vertical direction, avoiding lateral deviation that interferes with the tension adjustment accuracy. This effectively suppresses belt deviation and slippage, ensuring that the actual running speed of the belt is consistent with the detection speed. This solves the problem that in the actual working conditions of the existing speed-regulating belt quantitative feeding device, due to the impact of falling raw materials, as well as factors such as belt elastic fatigue, roller wear, and roller rubber aging, the belt tension will directly fluctuate dynamically. Tension imbalance will cause belt deviation and slippage, thereby destroying the weighing detection benchmark and causing quantitative accuracy deviation.

[0025] If the characteristics of the raw materials change, such as an increase in the proportion of large materials or the aging and extension of the belt after long-term use, resulting in insufficient conventional tension adjustment stroke, the motor 712 can be started to drive the threaded rod 713 to rotate, which will drive the control plate 78 to rise and fall along the control channel 79, thereby adjusting the support height of the movable outer rod 77, providing more lifting space for the auxiliary roller 74, expanding the adjustment range of the electric push rod 72, ensuring that the tension control can adapt to more complex working conditions, and ensuring the efficient and stable operation of the grinding process.

[0026] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A cement raw material grinding dosing device, characterized by, The utility model provides a kind of tension control assembly, including mounting frame, and multiple groups of support rods fixedly connected in the lower end of the mounting frame, the inner wall of the mounting frame is rotatably connected with transmission roller group and weighing roller group, the outer wall of the transmission roller group and the weighing roller group is drivingly connected with conveying belt, the inner wall of the conveying belt is provided with tension control assembly, the tension control assembly includes upper mounting frame fixedly connected in the inner wall of the mounting frame, the center of the upper mounting frame is fixedly connected with electric push rod, the output end of the electric push rod penetrates the bottom plate of the upper mounting frame, the output end of the electric push rod is fixedly connected with auxiliary frame, the inner wall of the auxiliary frame is rotatably connected with auxiliary roller, the auxiliary roller is drivingly connected with the inner wall of the conveying belt.

2. A cement production raw material grinding and dosing device according to claim 1, characterized in that: One side of the auxiliary frame is fixedly connected with side mounting plate, the lower end of the side mounting plate is fixedly connected with movable inner rod, the outer wall of the movable inner rod is slidingly connected with movable outer rod, the lower end of the movable outer rod is fixedly connected with control position plate.

3. A cement production raw material grinding and dosing device according to claim 2, characterized in that: The control position plate is arranged between two groups of the support rods, and the inner wall of the two groups of the support rods is provided with control position channel.

4. A cement production raw material grinding and dosing device according to claim 3, characterized in that: The inner wall of the control position plate and the control position channel is slidingly connected, the bottom and the top of one group of the control position channel are fixedly connected with first connecting plate and second connecting plate, the upper end of the second connecting plate is provided with motor, and the output end of the motor is fixedly connected with threaded rod.

5. A cement production raw material grinding and dosing device according to claim 4, characterized in that: The upper end of the threaded rod penetrates the first connecting plate, and the threaded rod is drivingly connected with the first connecting plate, the lower end of the threaded rod is rotatably connected with the second connecting plate, the threaded rod penetrates the control position plate, and the threaded rod is screwedly connected with the control position plate.

6. A cement production raw material grinding and dosing device according to claim 1, characterized in that: The upper end of the mounting frame is fixedly connected with upper mounting plate, and the inner wall of the upper mounting plate is fixedly connected with feeding hopper, for laying material on the conveying belt.

Images