A precision coal blending system

Abstract

This utility model relates to the field of coal blending technology, and in particular to a precision coal blending system. The system includes a stirring mechanism inside the casing, inlets fixedly connected to both sides of the upper part of the mixing tank, and an outlet fixedly connected to the lower center of the mixing tank. A material guiding structure is located inside the lower part of the mixing tank, and a second inspection door is installed on the front side of the mixing tank. In this precision coal blending system, through the cooperation of the stirring mechanism and the material guiding structure, the output shaft of the servo motor rotates, driving the first bevel gear to rotate. The first bevel gear then drives the second bevel gear to rotate, simultaneously driving the first stirring roller to rotate. The second bevel gear then drives the third bevel gear to rotate, thereby driving the second stirring roller to rotate. The first and second stirring rollers rotate in opposite directions, creating cross-shearing in the mixing area. Simultaneously, the vibration of the vibrating motor helps the coal concentrate towards the center, acting as a material guide and reducing dead zones during mixing, thus preventing insufficient coal mixing.

Description

Technical Field

[0001] This utility model relates to the field of coal blending technology, specifically a precision coal blending system. Background Technology

[0002] Coal blending is one of the processes in which coking coal and power coal are mixed and burned, and boiler preparation is carried out. It is an important preparation process for coal materials before coking or carbonization. In order to produce coke, power coal, and boiler coal that meet quality requirements, different types of raw coal are blended in appropriate proportions.

[0003] For example, a railway freight car precision coal blending system with publication number "CN113694821A" achieves precise control of coal blending while maintaining uniform mixing. This is achieved by configuring a coal bunker, coal blender, input transmission belt, coal mixing device, output transmission belt, electric flatcar, coal collection box, data acquisition module, positioning and storage module, input self-test module, and analysis and proportioning module. This improves the efficiency and intelligence of coal blending, effectively enhancing the system's reliability, real-time performance, and accuracy. However, in this system, the mixing pushers of the mixing components are arranged in a circular array around the first rotating rod. The central area near the first rotating rod is directly agitated, which easily creates mixing dead zones, leading to insufficient coal mixing. Utility Model Content

[0004] The purpose of this invention is to solve the problem that the mixing push plates of the mixing component are arranged in a ring array with the first rotating rod as the center, and the central area near the first rotating rod is directly stirred, which easily forms a mixing dead zone and leads to insufficient coal mixing. Therefore, a precise coal blending system is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a precision coal blending system, including a mixing hopper and support legs. Multiple support legs are fixedly connected to the bottom of the mixing hopper. A shell is fixedly connected to the upper center of the mixing hopper. A stirring mechanism is provided inside the shell. Feed inlets are fixedly connected to both sides of the upper part of the mixing hopper. A discharge outlet is fixedly connected to the lower center of the lower part of the mixing hopper. A material guiding structure is provided inside the lower part of the mixing hopper. A second maintenance door is installed on the front side of the mixing hopper.

[0007] Preferably, a first inspection door is installed on the front side of the housing.

[0008] Preferably, the stirring mechanism includes a servo motor, with a first bevel gear fixedly connected to the end of the output shaft of the servo motor. The outer wall of the first bevel gear meshes with a second bevel gear. The left side of the transmission shaft of the second bevel gear is rotatably connected to the housing through a sealed bearing. The lower part of the second bevel gear meshes with a third bevel gear. The inner wall of the third bevel gear is fixedly connected to the outer wall of the second stirring roller. The inner side of the second stirring roller is rotatably connected to the first stirring roller through a sealed bearing.

[0009] Preferably, the outer wall of the first stirring roller is fixedly connected to the inner wall of the first bevel gear, and the outer wall of the second stirring roller is rotatably connected to the housing and the mixing tank respectively through sealed bearings.

[0010] Preferably, the end of the servo motor is threadedly connected to the housing via bolts.

[0011] Preferably, the material guiding structure includes an arc-shaped plate, both sides of which are fixedly connected to the mixing tank, and multiple vibration motors are installed on the outer wall of the arc-shaped plate.

[0012] The present invention proposes a precise coal blending system with the following advantages: through the cooperation of the stirring mechanism and the material guiding structure, the output shaft of the servo motor rotates to drive the first bevel gear to rotate, the first bevel gear rotates to drive the second bevel gear to rotate, and at the same time drives the first stirring roller to rotate, the second bevel gear rotates to drive the third bevel gear to rotate, thereby driving the second stirring roller to rotate. The first stirring roller and the second stirring roller rotate in opposite directions, which can form cross shearing in the stirring area. At the same time, the vibration of the vibrating motor can make the coal gather towards the center, which plays a guiding role and reduces dead corners during stirring, thus preventing insufficient mixing of coal. Attached Figure Description

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

[0014] Figure 2 for Figure 1 A partial front sectional view;

[0015] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0016] Figure 4 for Figure 2 Partial top sectional view;

[0017] Figure 5 for Figure 2 A three-dimensional schematic diagram of the material guiding structure.

[0018] In the diagram: 1. Mixing tank, 2. Feed inlet, 3. Stirring mechanism, 301. Servo motor, 302. First bevel gear, 303. Second bevel gear, 304. Third bevel gear, 305. First stirring roller, 306. Second stirring roller, 4. Housing, 5. First inspection door, 6. Material guiding structure, 601. Arc plate, 602. Vibration motor, 7. Discharge port, 8. Support leg, 9. Second inspection door. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings:

[0020] See attached document Figure 1-5 In this embodiment, a precision coal blending system includes a mixing tank 1 and support legs 8. Multiple support legs 8 are fixedly connected to the bottom of the mixing tank 1. A housing 4 is fixedly connected to the upper middle part of the mixing tank 1. A stirring mechanism 3 is provided inside the housing 4. Feed inlets 2 are fixedly connected to both sides of the upper part of the mixing tank 1. A discharge outlet 7 is fixedly connected to the lower middle part of the mixing tank 1. A material guiding structure 6 is provided inside the lower part of the mixing tank 1. A second inspection door 9 is installed on the front side of the mixing tank 1.

[0021] A first inspection door 5 is installed on the front side of the housing 4. The outer wall of the first stirring roller 5 is fixedly connected to the inner wall of the first bevel gear 302. The outer wall of the second stirring roller 306 is rotatably connected to the housing 4 and the mixing tank 1 respectively through sealed bearings.

[0022] The stirring mechanism 3 includes a servo motor 301. A first bevel gear 302 is fixedly connected to the end of the output shaft of the servo motor 301. The outer wall of the first bevel gear 302 meshes with a second bevel gear 303. The left side of the transmission shaft of the second bevel gear 303 is rotatably connected to the housing 4 through a sealed bearing. The lower part of the second bevel gear 303 meshes with a third bevel gear 304. The inner wall of the third bevel gear 304 is fixedly connected to the outer wall of the second stirring roller 306. The inner side of the second stirring roller 306 is rotatably connected to the first stirring roller 305 through a sealed bearing. The rotation of the output shaft of the servo motor 301 drives the first bevel gear 302 to rotate. The rotation of the first bevel gear 302 drives the second bevel gear 303 to rotate, and at the same time drives the first stirring roller 305 to rotate. The rotation of the second bevel gear 303 drives the third bevel gear 304 to rotate, thereby driving the second stirring roller 306 to rotate.

[0023] The end of the servo motor 301 is threadedly connected to the housing 4 by bolts. The material guiding structure 6 includes an arc plate 601. Both sides of the arc plate 601 are fixedly connected to the mixing tank 1. Multiple vibration motors 602 are installed on the outer wall of the arc plate 601.

[0024] Working principle:

[0025] When using a precision coal blending system:

[0026] The external coal blender (model D500) is controlled by the controller to allow coal to enter the mixing tank 1 through the two feed inlets 2 above the mixing tank 1 (the discharge end of the coal blender should be aligned with the feed inlet). The coal blender can quantitatively feed the coal, so that the coal entering the mixing tank 1 forms a certain proportion, making the batching accurate.

[0027] Then, the servo motor 301 and the vibration motor 602 are started. The output shaft of the servo motor 301 rotates, which drives the first bevel gear 302 to rotate. The rotation of the first bevel gear 302 drives the second bevel gear 303 to rotate, which in turn drives the first stirring roller 305 to rotate. The rotation of the second bevel gear 303 drives the third bevel gear 304 to rotate, which in turn drives the second stirring roller 306 to rotate. The first stirring roller 305 and the second stirring roller 306 rotate in opposite directions, which can form cross shearing in the stirring area. At the same time, the vibration of the vibration motor 602 can make the coal gather towards the center, which plays a guiding role and reduces dead corners during stirring, thus preventing insufficient mixing of coal. To a certain extent, it can improve the accuracy of coal blending.

[0028] After the coal mixture is fully mixed, turn off all drive power and then open the solenoid valve at the discharge port 7 to discharge the mixed coal. By opening the first inspection door 5, the first bevel gear 302, the second bevel gear 303, and the third bevel gear 304 can be maintained or repaired. By opening the second inspection door 10, the first stirring roller 305, the second stirring roller 306, and the vibrating motor 602 can be inspected and repaired. At the same time, the multiple through holes below the second inspection door 10 can dissipate the heat generated by the vibrating motor 602 during operation.

[0029] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A precision coal blending system, comprising a mixing barrel (1) and support legs (8), a plurality of support legs (8) are fixedly connected below the mixing barrel (1), characterized in that: The mixing tank (1) is fixedly connected to the upper middle part of the housing (4), and the housing (4) is provided with a stirring mechanism (3). The mixing tank (1) is fixedly connected to the upper two sides of the inlet (2), and the mixing tank (1) is fixedly connected to the lower middle part of the outlet (7). The mixing tank (1) is provided with a material guiding structure (6) at the lower part of the interior. The mixing tank (1) is equipped with a second inspection door (9) on the front side.

2. The precision coal blending system of claim 1, wherein: The first inspection door (5) is installed on the front side of the housing (4).

3. The precision coal blending system of claim 2, wherein: The stirring mechanism (3) includes a servo motor (301), and a first bevel gear (302) is fixedly connected to the end of the output shaft of the servo motor (301). The outer wall of the first bevel gear (302) meshes with the second bevel gear (303). The left side of the transmission shaft of the second bevel gear (303) is rotatably connected to the housing (4) through a sealed bearing. The lower part of the second bevel gear (303) meshes with the third bevel gear (304). The inner wall of the third bevel gear (304) is fixedly connected to the outer wall of the second stirring roller (306). The inner side of the second stirring roller (306) is rotatably connected to the first stirring roller (305) through a sealed bearing.

4. The precision coal blending system of claim 3, wherein: The outer wall of the first stirring roller (305) is fixedly connected to the inner wall of the first bevel gear (302), and the outer wall of the second stirring roller (306) is rotatably connected to the housing (4) and the mixing tank (1) respectively through sealed bearings.

5. The precision coal blending system of claim 3, wherein: The end of the servo motor (301) is threadedly connected to the housing (4) by bolts.

6. The precision coal blending system according to claim 1, characterized in that: The material guiding structure (6) includes an arc plate (601), both sides of which are fixedly connected to the mixing tank (1), and multiple vibration motors (602) are installed on the outer wall of the arc plate (601).

Images