Raw material screening mechanism on raw material conveying line

Abstract

The utility model discloses a raw material screening mechanism on a raw material conveying line. The raw material screening mechanism comprises a fixed support, a screening plate, a conveying device, a matching piece, a swing plate, a rotating plate, a hinged plate, a movable plate, a sliding frame and a distributing plate. According to the raw material screening device, continuous shaking of the screening plate is achieved through rotation of the rotating plate in cooperation with the movable plate and the two hinged plates, so that raw material screening is completed, the over-grinding phenomenon is reduced, fine powder and coarse particles in raw materials are separated through the screening plate, the amount of the fine powder entering the roller press is reduced, the over-grinding degree of the raw materials is effectively reduced, and the raw material screening effect is improved. Meanwhile, the rotating plate drives the swing plate to do reciprocating rotation at a certain angle, so that the sliding frame and the allocation plate do reciprocating motion along the sieve plate to allocate the raw materials entering the top of the sieve plate, and the situation that the raw materials are stacked and cannot be allocated in time, and the screening quality and the screening efficiency are affected is avoided.

Description

Technical Field

[0001] This utility model relates to the field of screening structure technology for conveyor lines, specifically a raw material screening mechanism for a raw material conveyor line. Background Technology

[0002] In the production of cement clinker, raw meal preparation is one of the key steps. In the raw meal process line of the calcination workshop, the workshop installed a belt conveyor in the raw meal system to allow the raw materials to be directly fed into the intermediate silo for grinding, reducing the number of material lifting times. However, the dust collection efficiency of the first-stage cyclone separator in the preheater decreased and the return material increased. After analysis, it was found that this was due to the serious over-grinding of raw meal and the increase of fine powder. This not only increased coal consumption and the overall power consumption of clinker, but also affected the stable operation of the production line.

[0003] Therefore, it is necessary to screen the raw materials to separate the fine materials from the conveyor line. The existing conveyor line does not have a screening mechanism, which results in the fine powder and coarse particles in the raw materials not being separated. This leads to a large amount of fine powder entering the roller press, causing serious over-grinding of the raw materials. Utility Model Content

[0004] The purpose of this invention is to provide a raw material screening mechanism on a raw material conveying line to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides a raw material screening mechanism on a raw material conveying line, including a fixed support, on which a screen plate distributed at an inclination is movably fitted, and both ends of the screen plate are provided with conveying devices;

[0006] It also includes: a fitting component and a swing plate rotatably connected to the fixed bracket. A rotating plate is rotatably connected to the fixed bracket. Two parallel hinge plates are rotatably connected between the fixed bracket and the sieve plate. An inclined movable plate is rotatably connected between the rotating plate and one end of the sieve plate. A sliding frame is slidably fitted on the sieve plate. The end of the swing plate causes the sliding frame to reciprocate along the sieve plate through the fitting component. Multiple distribution plates are provided between the two sliding frames.

[0007] Preferably, a motor is fixedly connected to the fixed bracket, and the output shaft of the motor is fixedly connected to one end of the rotating plate to provide power for the screen plate to work.

[0008] Preferably, the swing plate has an arc-shaped structure, a sliding groove is provided in the middle of the swing plate, and a connecting shaft that slides in the sliding groove is fixedly connected to the other end of the rotating plate. The connecting shaft is rotatably connected to the movable plate.

[0009] Preferably, the mating component includes a mating plate, one end of which is rotatably connected to the top of the swing plate, and the other end of which is rotatably connected to the middle of the sliding frame.

[0010] Preferably, the sliding frame has a U-shaped structure, a limiting plate is fixedly connected inside the sliding frame, and a limiting groove is provided on the side of the sieve plate to slide and cooperate with the limiting plate, so as to ensure smooth movement.

[0011] Preferably, the positions of the multiple distribution plates relative to the sliding frame are arranged in a stepped manner to facilitate layer-by-layer distribution.

[0012] Preferably, the bottom of the sieve plate is provided with a collection cylinder, and the bottom of the collection cylinder is provided with an electronic belt scale for easy weighing and transfer.

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

[0014] This application achieves continuous shaking of the screen plate by rotating the rotating plate, in conjunction with the movable plate and two hinged plates, thereby completing the screening of raw materials and reducing over-grinding. That is, the screen plate separates fine powder from coarse particles in the raw materials, reducing the amount of fine powder entering the roller press and effectively reducing the degree of over-grinding of raw materials.

[0015] Energy saving and emission reduction: By optimizing the raw material screening and conveying process, the power consumption of raw material mills is reduced, which helps enterprises achieve their energy saving and emission reduction goals; Improved production efficiency: The automated and intelligent control system improves the efficiency of screening and conveying, providing a strong guarantee for the smooth operation of the production line.

[0016] The rotating plate simultaneously drives the swing plate to reciprocate at a certain angle, thereby causing the sliding frame and the distribution plate to move back and forth along the screen plate, distributing the raw material entering the top of the screen plate, avoiding the accumulation of raw material, which would affect the screening quality and efficiency if it could not be distributed in time. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an enlarged schematic diagram of the structure of this utility model with the two conveying devices separated.

[0019] Figure 3 This is a schematic diagram of the cooperation structure between the sieve plate and the fixed bracket of this utility model;

[0020] Figure 4 This is a schematic diagram of the disassembled structure of the swing plate and hinge plate of this utility model, which are simultaneously connected to the fixed bracket.

[0021] Figure 5 This is a schematic diagram showing the disassembled structure of the motor and the movable plate of this utility model;

[0022] Figure 6 This is a schematic diagram of the cooperation structure between the swing plate and the sliding frame of this utility model;

[0023] Figure 7 This utility model Figure 6 A schematic diagram of the breakdown of the structure.

[0024] In the diagram: 1. Fixed support; 2. Screen plate; 3. Conveying device; 4. Swing plate; 5. Rotating plate; 6. Hinge plate; 7. Movable plate; 8. Sliding frame; 9. Distributing plate; 10. Motor; 11. Sliding groove; 12. Connecting shaft; 13. Matching plate; 14. Limiting plate; 15. Limiting groove; 16. Collection cylinder. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-7 This utility model provides a raw material screening mechanism on a raw material conveying line, including a fixed support 1, a screen plate 2 that is movably fitted on the fixed support 1 and is distributed at an incline, and conveying devices 3 are provided at both ends of the screen plate 2. The conveying device 3 at the top is a large belt conveyor for conveying raw material into the roller, and the conveying device 3 at the bottom is a small belt conveyor for conveying coarse material into the intermediate bin after screening.

[0027] It also includes: a fitting and a swing plate 4 rotatably connected to the fixed bracket 1, a rotating plate 5 rotatably connected to the fixed bracket 1, two parallel hinge plates 6 rotatably connected between the fixed bracket 1 and the sieve plate 2, an inclined movable plate 7 rotatably connected between the rotating plate 5 and one end of the sieve plate 2, a sliding frame 8 slidably fitted on the sieve plate 2, and the end of the swing plate 4 causes the sliding frame 8 to reciprocate along the sieve plate 2 through the fitting, and multiple distribution plates 9 are provided between the two sliding frames 8;

[0028] In this application, the rotation of the rotating plate 5, in conjunction with the movable plate 7 and the two hinged plates 6, enables the continuous shaking of the screen plate 2, thereby completing the screening of raw materials.

[0029] On the other hand, the rotating plate 5 simultaneously drives the swing plate 4 to reciprocate at a certain angle, thereby causing the sliding frame 8 and the distribution plate 9 to move back and forth along the screen plate 2, distributing the raw material entering the top of the screen plate 2, avoiding the accumulation of raw material, which would affect the screening quality and screening efficiency if it could not be distributed in time.

[0030] A motor 10 is fixedly connected to the fixed bracket 1. The output shaft of the motor 10 is fixedly connected to one end of the rotating plate 5. The swing plate 4 has an arc-shaped structure. A sliding groove 11 is opened in the middle of the swing plate 4. A connecting shaft 12 that slides in the sliding groove 11 is fixedly connected to the other end of the rotating plate 5. The connecting shaft 12 is rotatably connected to the movable plate 7.

[0031] The output shaft of motor 10 rotates, driving the rotating plate 5 to make a circular motion. On the one hand, the rotating plate 5 drives one end of the movable plate 7 to make a circular motion through the connecting shaft 12. Under the action of the two hinge plates 6 (the hinge plates 6, the screen plate 2 and the fixed bracket 1 form a parallelogram), the entire screen plate 2 is made to sway back and forth, thereby completing the vibration of the screen plate 2 and completing the screening of raw materials.

[0032] This application uses a sieve plate 2 to separate particles larger than 18mm and fine powder from the raw material entering the mill. Particles larger than 18mm are directly fed into the stabilizing chamber via a conveyor device 3, while the remaining fine powder is pre-sorted by an electronic belt scale to reduce over-grinding. The advantages of this application are:

[0033] Reducing over-grinding: By separating fine powder from coarse particles in the raw material through sieve plate 2, the amount of fine powder entering the roller press is reduced, effectively reducing the over-grinding of raw materials. The report obtained by testing with NKT2020-L laser particle size analyzer shows that after using sieve plate 2, <1μm decreased from 13.82% to 6.28%, a reduction of 7.54%, which improved the cyclone dust collection efficiency.

[0034] Energy conservation and emission reduction: By optimizing the raw material screening and conveying process, the power consumption of raw material mills is reduced, which helps enterprises achieve their energy conservation and emission reduction goals.

[0035] Improved production efficiency: The automated and intelligent control system improves the efficiency of screening and conveying, providing a strong guarantee for the smooth operation of the production line.

[0036] Among them, the screening efficiency and processing capacity of the sieve plate 2 must match the overall capacity of the raw material conveying device 3 to ensure that the screening process does not cause a bottleneck to the conveying line.

[0037] The aperture of the sieve plate 2 needs to be precisely controlled at 18mm to effectively separate particles larger than this size, while allowing fine powder materials to pass through.

[0038] On the other hand, while the connecting shaft 12 moves in a circular motion with the rotating plate 5, the sliding groove 11, through the cooperation of the connecting shaft 12, causes the swing plate 4 to reciprocate at a certain angle. Through the mating parts, the fixed sliding frame 8 reciprocates relative to the screen plate 2, thereby driving the distribution plate 9 to reciprocate along the screen plate 2, distributing the raw material entering the top of the screen plate 2, avoiding the accumulation of raw material, and preventing it from being distributed in time, which would affect the screening quality and screening efficiency.

[0039] The mating component includes a mating plate 13. One end of the mating plate 13 is rotatably connected to the top of the swing plate 4, and the other end of the mating plate 13 is rotatably connected to the middle of the sliding frame 8. The swing plate 4 reciprocates at a certain angle, and the rotation angle is less than 90°, thereby driving the sliding frame 8 to slide back and forth along the screen plate 2. The mating plate 13 rotates adaptively, and the adaptive rotation angle is small.

[0040] The sliding frame 8 has a U-shaped structure, and a limiting plate 14 is fixedly connected inside the sliding frame 8. The side of the screen plate 2 is provided with a limiting groove 15 that slides with the limiting plate 14. By setting the sliding frame 8 with a U-shaped structure, it is easy for the sliding frame 8 to slide smoothly and stably along the side of the screen plate 2. The cooperation between the limiting plate 14 and the limiting groove 15 further enhances the smooth movement of the sliding frame 8, thereby enabling the spreading plate 9 to move smoothly back and forth, spreading and leveling the raw material entering the screen plate 2, which is convenient for the screening of the screen plate 2.

[0041] Multiple distribution plates 9 are arranged in a stepped manner relative to the sliding frame 8. When raw material enters the top of the screen plate 2 through the top conveyor 3, it is distributed under the action of the reciprocating distribution plates 9. The distance between the distribution plate 9 near the top conveyor 3 and the plane of the screen plate 2 is larger, while the distance between the distribution plate 9 far from the top conveyor 3 and the plane of the screen plate 2 is smaller. This allows the raw material entering the screen plate 2 to be distributed and leveled layer by layer through multiple distribution plates 9 of different heights, avoiding the accumulation of raw material in one place, which would prevent some raw material from contacting the screen holes on the screen plate 2 and achieving comprehensive screening.

[0042] The bottom of the sieve plate 2 is equipped with a collection cylinder 16, and the bottom of the collection cylinder 16 is equipped with an electronic belt scale, which facilitates the fine material under the vibration of the sieve plate 2 to enter the collection cylinder 16, and finally the fine material is weighed, counted and transferred by the electronic belt scale.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw material screening mechanism on a raw material conveying line, comprising: The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); 2. A raw material screening mechanism on a raw material conveying line according to claim 1, characterized in that: The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); 3. A raw material screening mechanism on a raw material conveying line according to claim 1, characterized in that: The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); 4. A raw material screening mechanism on a raw material conveying line according to claim 1, characterized in that: The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); 5. A raw material screening mechanism on a raw material conveying line according to claim 1, characterized in that: The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); 6. A raw material screening mechanism on a raw material conveying line according to claim 1, characterized in that: The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); 7. A raw material screening mechanism on a raw material conveying line according to claim 1, characterized in that: The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); The fixed support (1) is movably connected with a sieve plate (2) in an inclined distribution, and both ends of the sieve plate (2) are provided with conveying devices (3); 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