A medium-speed abrasive layer thickness measuring device

Abstract

This utility model belongs to the technical field of metallurgical industry, and in particular to a medium-speed abrasive layer thickness measuring device, including a device body. When raw coal enters the gap between the grinding roller and the grinding disc in a medium-speed mill, the raw coal exerts a pushing force on the grinding roller assembly, causing the extrusion rod to move into the device body. As the extrusion rod moves, the loading rod moves, and the first platform block also moves accordingly, compressing the spring. The spring generates a reaction force during compression, which balances the pushing force of the raw coal on the grinding roller assembly. The extension length and action waveform data of the loading rod measured by the contact sensor are transmitted to an external central control algorithm system. Based on the extension length and action waveform characteristics of the loading rod, the accuracy and reliability of the measurement are improved. When the contact sensor needs to be disassembled for maintenance or replacement, pulling the lever moves the locking pin upward, causing the locking pin to disengage from the slot, allowing the mounting block to be removed from the insertion slot, thus completing the disassembly of the contact sensor.

Description

Technical Field

[0001] This utility model relates to the technical field of metallurgical industry, specifically to a medium-speed abrasive layer thickness measuring device. Background Technology

[0002] In the power and metallurgical industries, the efficient utilization of coal is crucial for ensuring stable production and improving economic benefits. The preparation of raw coal into pulverized coal is a vital preliminary step in coal combustion and gasification processes. The medium-speed mill, as the core equipment in this process, directly impacts the efficiency and quality of the entire production flow. The working principle of a medium-speed mill is as follows: after raw coal enters the vertical mill via a feeder, it is thrown into the gap between the grinding rollers and the grinding disc by the strong centrifugal force generated by the rotation of the grinding disc. At this point, the raw coal pushes the grinding roller assembly upwards, bringing it into contact with the force-bearing surface of the spring-loaded device. The spring-loaded device, through its reaction force, causes the grinding rollers and grinding disc to grind and pressurize the raw coal, ultimately preparing it into pulverized coal that meets the required standards. Throughout the operation of the medium-speed mill, the thickness of the raw coal bed is a critical parameter. Accurately controlling the raw coal bed thickness not only ensures the stable and efficient operation of the medium-speed mill, avoiding equipment failures and low production efficiency caused by excessively thick or thin bed thicknesses, but also provides crucial information for judging the mill's production indicators.

[0003] Most existing devices fail to adequately consider the dynamic impact of raw coal entering the gap between the grinding rollers and the grinding disc on the grinding roller assembly and the spring-loaded device. In actual production, the raw coal entering the gap lifts the grinding roller assembly, and simultaneously, the raw coal itself is subjected to the spring-loaded force, causing the spring-loaded loading rod to be pushed out of the equipment. However, existing devices fail to effectively utilize this dynamic process to accurately measure the thickness of the raw coal layer. Therefore, we propose a medium-speed grinding layer thickness measuring device to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a medium-speed abrasive layer thickness measuring device, which solves the problems mentioned in the background section.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A medium-speed abrasive layer thickness measuring device includes a main body. A pressing rod is located on the left side of the main body, with its end extending into the main body and welded to a loading rod. A first trapezoidal block is welded to the loading rod. Two threaded rods are located on the right side of the main body, with the ends of the two threaded rods welded to the same second trapezoidal block. The second trapezoidal block is slidably connected to the loading rod, and a spring is welded between the second trapezoidal block and the first trapezoidal block. An extension tube is connected and fixedly connected to the right side of the main body. Two insertion slots are formed at the end of the extension tube, and mounting blocks are fitted onto the insertion slots. A common mounting seat is welded to one side of each mounting block, and a contact sensor is fixedly connected to one side of the mounting seat. Two first cavities are formed at the end of the extension tube, with locking pins inside each cavity. The ends of the locking pins extend into the corresponding insertion slots and engage with the slots. A limiting ring is welded to the locking pin, and a first tension spring is welded between one side of the limiting ring and one inner wall of the first cavity. The top of the locking pin extends out of the extension tube and is welded to a pull rod.

[0009] Furthermore, the spring is movably sleeved on the loading rod, and a nut is threadedly connected to the threaded rod.

[0010] Furthermore, the first tension spring is movably sleeved on the corresponding locking pin.

[0011] Furthermore, a second cavity is provided at the end of the extension tube, and a T-shaped rod is provided inside the second cavity.

[0012] Furthermore, the top end of the T-shaped rod extends outside the extension tube and is fixedly connected to one side of the pull rod.

[0013] Furthermore, a second tension spring is welded between one inner wall of the T-shaped rod and one inner wall of the second cavity, and the second tension spring is movably sleeved on the T-shaped rod.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a medium-speed abrasive layer thickness measuring device, which has the following beneficial effects:

[0016] In this invention, when raw coal enters the gap between the grinding roller and the grinding disc in a medium-speed mill, the raw coal exerts a pushing force on the grinding roller assembly, causing the extrusion rod to move into the main body of the device. As the extrusion rod moves, the loading rod moves, and the first platform block also moves accordingly, thereby compressing the spring. The spring generates a reaction force during the compression process, which balances the pushing force of the raw coal on the grinding roller assembly. The extension length and action waveform data of the loading rod measured by the contact sensor are transmitted to an external central control algorithm system. This algorithm system has been trained and optimized with a large amount of experimental data and can accurately calculate the actual thickness of the raw coal layer based on the extension length and action waveform characteristics of the loading rod, thus improving the accuracy and reliability of the measurement. When it is necessary to disassemble the contact sensor for maintenance or replacement, pulling the pull rod moves the locking pin upward, causing the locking pin to disengage from the locking slot, and the mounting block can be removed from the insertion slot, completing the disassembly of the contact sensor. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the main body of the device of this utility model cut open;

[0019] Figure 3 This is a three-dimensional structural diagram of the connection between the extension tube and the tie rod of this utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the extension tube of this utility model cut open;

[0021] Figure 5 This is a partial three-dimensional structural diagram of the present invention.

[0022] In the diagram: 1. Main body of the device; 2. Extrusion rod; 3. Loading rod; 4. First truncated block; 5. Threaded rod; 6. Second truncated block; 7. Spring; 8. Nut; 9. Extension tube; 10. Insertion groove; 11. First cavity; 12. Locking pin; 13. Limiting ring; 14. First tension spring; 15. Pull rod; 16. Mounting base; 17. Mounting block; 18. Locking groove; 19. Second tension spring; 20. Contact sensor; 21. Second cavity; 22. T-shaped rod. Detailed Implementation

[0023] 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.

[0024] Example

[0025] like Figure 1-5 As shown in the figure, an embodiment of the present invention discloses a medium-speed abrasive layer thickness measuring device, comprising a device body 1. A pressing rod 2 is provided on the left side of the device body 1, the end of which extends into the device body 1 and is welded to a loading rod 3. A first platform block 4 is welded to the loading rod 3. Two threaded rods 5 are provided on the right side of the device body 1, the ends of which are welded to the same second platform block 6. The second platform block 6 is slidably connected to the loading rod 3. A spring 7 is welded between the second platform block 6 and the first platform block 4. An extension tube 9 is connected and fixedly connected to the right side of the device body 1, and an opening is provided at the end of the extension tube 9. There are two insertion slots 10, and mounting blocks 17 are snapped onto the insertion slots 10. The same mounting base 16 is welded to one side of the two mounting blocks 17. A contact sensor 20 is fixedly connected to one side of the mounting base 16. Two first cavities 11 are opened at the end of the extension tube 9. A locking pin 12 is provided in the first cavity 11. The end of the locking pin 12 extends into the corresponding insertion slot 10 and is snapped into the slot 18. A limiting ring 13 is welded onto the locking pin 12. A first tension spring 14 is welded between one side of the limiting ring 13 and one side of the inner wall of the first cavity 11. The top of the locking pin 12 extends out of the extension tube 9 and is welded with a pull rod 15.

[0026] During operation, when raw coal enters the gap between the grinding rollers and the grinding disc in the medium-speed mill, the raw coal exerts a pushing force on the grinding roller assembly, causing the extrusion rod 2 to move into the main body 1 of the device. As the extrusion rod 2 moves, it drives the loading rod 3 to move, and the first platform block 4 also moves accordingly, thereby compressing the spring 7. The spring 7 generates a reaction force during the compression process, which balances the pushing force of the raw coal on the grinding roller assembly. The extension length of the loading rod 3 and the action waveform data measured by the contact sensor 20 are transmitted to the external central control algorithm system. This algorithm system has been trained and optimized with a large amount of experimental data. Based on the extension length and waveform characteristics of the loading rod 3, the actual thickness of the raw coal layer can be accurately calculated. This intelligent algorithm effectively eliminates the influence of other interference factors on the measurement results, improving the accuracy and reliability of the measurement. When it is necessary to disassemble the contact sensor 20 for maintenance or replacement, pull the lever 15. The lever 15 drives the locking pin 12 to move upward, causing the locking pin 12 to disengage from the slot 18. After the locking pin 12 is completely disengaged from the slot 18, the mounting block 17 can be removed from the insertion slot 10, completing the disassembly of the contact sensor 20.

[0027] In some embodiments, the spring 7 is movably sleeved on the loading rod 3, and the threaded rod 5 is threaded with a nut 8.

[0028] By rotating the nut 8 on the threaded rod 5, the position of the second block 6 can be adjusted, thereby changing the initial compression of the spring 7. This adjustment function enables the device to adapt to the needs of measuring the thickness of the raw coal layer under different working conditions.

[0029] In some embodiments, the first tension spring 14 is movably sleeved on the corresponding locking pin 12.

[0030] In some embodiments, the end of the extension tube 9 is provided with a second cavity 21, and a T-shaped rod 22 is provided in the second cavity 21.

[0031] When the lever 15 is pulled, the second tension spring 19 is stretched. After the lever 15 is released, the elastic force of the second tension spring 19 causes the lever 15 and the locking pin 12 to automatically reset, making it convenient for the next installation and use.

[0032] In some embodiments, the top end of the T-shaped rod 22 extends outside the extension tube 9 and is fixedly connected to one side of the pull rod 15.

[0033] In some embodiments, a second tension spring 19 is welded between one inner wall of the T-shaped rod 22 and one inner wall of the second cavity 21, and the second tension spring 19 is movably sleeved on the T-shaped rod 22.

[0034] The T-shaped rod 22 serves as a limit switch.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A medium-speed abrasive layer thickness measuring device, comprising a device body (1), characterized in that: A pressing rod (2) is provided on the left side of the main body (1). The end of the pressing rod (2) extends into the main body (1) and is welded with a loading rod (3). A first platform block (4) is welded on the loading rod (3). Two threaded rods (5) are provided on the right side of the main body (1). The ends of the two threaded rods (5) are welded with the same second platform block (6). The second platform block (6) is slidably connected to the loading rod (3). A spring (7) is welded between the second platform block (6) and the first platform block (4). An extension tube (9) is connected and fixedly connected to the right side of the main body (1). Two insertion slots (10) are opened at the end of the extension tube (9). The insertion slots (10) are fitted with... The device is equipped with mounting blocks (17), and the same mounting base (16) is welded to one side of the two mounting blocks (17). A contact sensor (20) is fixedly connected to one side of the mounting base (16). Two first cavities (11) are opened at the end of the extension tube (9). A locking pin (12) is provided in the first cavity (11). The end of the locking pin (12) extends into the corresponding insertion groove (10) and is engaged with the groove (18). A limiting ring (13) is welded on the locking pin (12). A first tension spring (14) is welded between one side of the limiting ring (13) and one side of the inner wall of the first cavity (11). The top of the locking pin (12) extends to the outside of the extension tube (9) and is welded with a pull rod (15).

2. The medium-speed abrasive layer thickness measuring device according to claim 1, characterized in that: The spring (7) is movably sleeved on the loading rod (3), and the threaded rod (5) is threaded with a nut (8).

3. The medium-speed abrasive layer thickness measuring device according to claim 2, characterized in that: The first tension spring (14) is movably sleeved on the corresponding locking pin (12).

4. The medium-speed abrasive layer thickness measuring device according to claim 3, characterized in that: The end of the extension tube (9) is provided with a second cavity (21), and a T-shaped rod (22) is provided in the second cavity (21).

5. The medium-speed abrasive layer thickness measuring device according to claim 4, characterized in that: The top end of the T-shaped rod (22) extends outside the extension tube (9) and is fixedly connected to one side of the pull rod (15).

6. The medium-speed abrasive layer thickness measuring device according to claim 5, characterized in that: A second tension spring (19) is welded between one inner wall of the T-shaped rod (22) and one inner wall of the second cavity (21), and the second tension spring (19) is movably sleeved on the T-shaped rod (22).

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