Coal ash content adjusting device

Abstract

The utility model discloses a kind of clean coal ash content adjusting devices, belong to coal processing field, including storage tank, the storage tank is divided into material cavity, the material cavity is connected with hopper, the storage tank side wall is connected with material pipe, the other end of the material pipe is connected with transfer box, the transfer box below is welded with guide ring disc, the guide ring disc below is rotatably connected with mixed material cylinder, the mixed material cylinder is rotatably installed on support base, the support base is rotatably installed with stirring rod, the stirring rod is located in mixed material cylinder, the mixed material cylinder side wall is hinged with sealed baffle;Through the double motion cooperation design of stirring rod fixed rotation and mixed material cylinder reverse rotation, effectively solve the defects of material mixing dead zone and slow relative motion speed, through the storage tank separates two groups of material cavities and corresponds two groups of hoppers, high-ash coal and low-ash coal can be stored respectively, without additional configuration independent storage, reduce equipment floor area.

Description

Technical Field

[0001] This utility model belongs to the field of coal processing technology, specifically relating to a device for adjusting the ash content of refined coal. Background Technology

[0002] In the coal washing and processing industry, the precise control of the ash content of refined coal directly determines the raw material compatibility for downstream applications (such as steel smelting and power generation), and the uniformity of material mixing is one of the core factors affecting the accuracy of ash content control.

[0003] Although automated detection and quantitative feeding technologies have been gradually introduced into the current coal ash content adjustment devices on the market, there are still significant defects in the material mixing structure design. That is, the mixing mechanism of the existing adjustment devices generally adopts a single motion mode, that is, the mixing chamber rotates in conjunction with the internal stirring component. During the mixing process, the material is easily attached to the chamber wall by centrifugal force, forming dead zones. As a result, high ash coal, low ash coal and raw material clean coal can only be partially mixed in the middle of the chamber, while the material at the edge remains in a stratified state. In the end, the mixing uniformity error often exceeds 5%, causing the ash content test data to be distorted and the product quality to fluctuate. Utility Model Content

[0004] The purpose of this invention is to provide a device for adjusting the ash content of refined coal to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a clean coal ash content adjustment device, comprising a storage box, the storage box having a material chamber internally divided, a hopper connected to the material chamber, a material pipe connected to the side wall of the storage box, the other end of the material pipe connected to a transfer box, a guide ring plate welded below the transfer box, a mixing cylinder rotatably connected below the guide ring plate, the mixing cylinder rotatably mounted on a supporting base, a stirring rod rotatably mounted on the supporting base, the stirring rod being located in the mixing cylinder, and a sealing partition hinged to the side wall of the mixing cylinder.

[0006] In a preferred embodiment, a toothed ring is fixedly sleeved on the lower end of the mixing cylinder along the outer wall, and the toothed ring is meshed with a gear. A control motor is fixedly mounted on the side wall of the support chassis, and the gear is fixedly installed at the output end of the control motor.

[0007] In a preferred embodiment, the lower end face of the guide ring disk is provided with an annular assembly cavity, the top end of the mixing cylinder is integrally formed with an annular boss structure collar, the collar is rotatably fitted into the annular assembly cavity of the guide ring disk, the upper end face of the support base is provided with an annular positioning groove adapted to the outer wall of the mixing cylinder, and the lower end of the mixing cylinder is rotatably fitted into the annular positioning groove of the support base.

[0008] In a preferred embodiment, the transfer box is equipped with a pull-out electromagnetic separator.

[0009] In a preferred embodiment, two sets of regulating motors are installed on the side wall of the storage box. The output ends of the two sets of regulating motors are connected to worm gears. Each set of worm gears is sleeved in a material tube, and one end of each set of material tubes is connected to two sets of material cavities of the storage box.

[0010] In a preferred embodiment, the inner wall of the hopper is provided with wear-resistant liners, which are fixedly connected to the inner wall of the hopper by bolts.

[0011] In a preferred embodiment, the top of the transfer box is provided with an observation cavity, and the observation cavity is equipped with a cover plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This refined coal ash content adjustment device effectively solves the defects of material mixing dead zone and slow relative motion speed through the dual motion coordination design of fixed rotation of stirring rod and reverse rotation of mixing cylinder; This refined coal ash content adjustment device separates two sets of material chambers and corresponding two sets of hoppers through a storage box, which can store high-ash coal and low-ash coal respectively. There is no need to configure an additional independent storage silo, reducing the equipment footprint. At the same time, each set of material chambers is driven by an independent adjustment motor to convey materials through a worm gear (the worm gear is sleeved inside the material pipe), which can adjust the output of the two types of coal to adapt to different ratio requirements during the mixing process, avoid the imbalance of the mixing ratio, and solve the defect of insufficient manual adjustment precision of the dual-chamber storage box. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the mixing cylinder of this utility model; Figure 3 This is a schematic diagram of the installation structure of the electromagnetic separator of this utility model. Figure 4 This is a schematic diagram of the mixing cylinder installation structure of this utility model.

[0014] In the diagram: 1. Storage bin; 2. Hopper; 3. Wear-resistant liner; 4. Material pipe; 5. Adjusting motor; 6. Transfer box; 61. Cover plate; 7. Electromagnetic separator; 8. Guide ring disc; 9. Mixing cylinder; 91. Collar ring; 92. Sealing partition; 10. Gear ring; 101. Control motor; 102. Gear; 11. Support chassis; 12. Annular positioning groove; 13. Stirring rod. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments.

[0016] The following embodiments are used to illustrate the present invention, but should not be used to limit the scope of protection of the present invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple improvements to the method of the present invention under the premise of the concept of the present invention are all within the scope of protection claimed by the present invention.

[0017] Please see Figures 1-4 This utility model provides a device for adjusting the ash content of refined coal, including a storage box 1, which is divided into a material chamber. A hopper 2 is connected to the material chamber. A material pipe 4 is connected to the side wall of the storage box 1. The other end of the material pipe 4 is connected to a transfer box 6. A guide ring plate 8 is welded below the transfer box 6. A mixing cylinder 9 is rotatably connected below the guide ring plate 8. The mixing cylinder 9 is rotatably mounted on a supporting base 11. A stirring rod 13 is rotatably mounted on the supporting base 11. The stirring rod 13 is connected to the output end of a rotary motor installed at the lower end of the supporting base 11. The stirring rod 13 is located in the mixing cylinder 9. A sealing partition 92 is hinged to the side wall of the mixing cylinder 9. A toothed ring 10 is fixedly fitted along the outer wall of the lower end of the mixing cylinder 9. The toothed ring 10 is meshed with a gear 102. The gear 102 is fixedly installed at the output end of the control motor 101. The control motor 101 is fixedly mounted on the side wall of the support base 11. An annular assembly cavity is opened on the lower end face of the guide ring disk 8. An annular boss structure collar 91 is integrally formed on the top end of the mixing cylinder 9. The collar 91 is rotatably fitted into the annular assembly cavity of the guide ring disk 8. An annular positioning groove 12 adapted to the outer wall of the mixing cylinder 9 is opened on the upper end face of the support base 11. The lower end of the mixing cylinder 9 is rotatably fitted into the annular positioning groove 12 of the support base 11.

[0018] In this embodiment, the stirring rod 13, fixed to the supporting chassis 11, actively rotates inside the mixing cylinder 9. At the same time, the mixing cylinder 9 is driven by the gear 102 at the output end of the control motor 101 through the meshing of the toothed ring 10 fixed on the outer wall. This allows it to rotate in the opposite direction to the stirring rod 13. Through this dual motion, the material inside the mixing cylinder 9 is simultaneously subjected to the shearing and dispersing force of the stirring rod 13 and the tumbling thrust of the cylinder wall. The relative speed of the material particles is significantly improved, and the mixing uniformity error is smaller. This provides a stable material basis for the precise adjustment of the ash content of clean coal and avoids the distortion of ash content detection and product quality fluctuations caused by uneven mixing.

[0019] Please see Figures 1-3 The top of the transfer box 6 is provided with an observation cavity, and the observation cavity is equipped with a cover plate 61. An electromagnetic iron separator 7 (HY-GD-80 series iron separator) is installed in the transfer box 6 by a pull-out mechanism.

[0020] In this embodiment, an observation cavity is opened on the top of the transfer box 6 and a cover plate 61 is configured to form a dual guarantee of visibility and sealing. By opening the cover plate 61, the staff can directly observe the conveying volume, accumulation status and abnormal clumping of materials inside the transfer box 6, and promptly detect and deal with problems such as material blockage and poor conveying.

[0021] In this embodiment, by assembling an electromagnetic separator 7 in the transfer box 6 in a pull-out manner, the electromagnetic separator 7 can quickly adsorb ferromagnetic impurities in the material as it passes through the transfer box 6, preventing impurities from scratching the cylinder wall or colliding with the stirring rod 13 after entering the mixing cylinder 9 with the material, thus extending the service life of the mixing cylinder 9 and the stirring rod 13. At the same time, it prevents impurities from interfering with the subsequent ash content detection process, ensuring accurate ash content data.

[0022] Please see Figure 1 and Figure 2 The storage bin 1 is divided into two sets of material chambers, and each set of material chambers is connected to a hopper 2. Two sets of regulating motors 5 are installed on the side wall of the storage bin 1. The output ends of the two sets of regulating motors 5 are connected to worm gears. Each set of worm gears is sleeved in the material pipe 4. One end of each set of material pipe 4 is connected to the two sets of material chambers of the storage bin 1.

[0023] In this embodiment, the storage box 1 is used to separate two sets of material chambers and correspond to two sets of hoppers 2, which can store high-ash coal and low-ash coal respectively. There is no need to configure an additional independent storage silo, which reduces the equipment footprint. At the same time, each set of material chambers is driven by an independent adjusting motor 5 to drive the worm gear to convey materials (the worm gear is sleeved in the material pipe 4). The output of the two types of coal can be adjusted to adapt to different ratio requirements during the mixing process, avoid the imbalance of the mixing ratio, and solve the defect of insufficient manual adjustment accuracy of the dual-chamber storage box 1.

[0024] Please see Figure 1 and Figure 2 The inner wall of the hopper 2 is provided with wear-resistant liners 3, which are made of high molecular weight polyethylene and are fixedly connected to the inner wall of the hopper 2 by bolts.

[0025] By installing a wear-resistant liner 3 on the inner wall of the hopper 2, and the wear-resistant liner 3 is made of high molecular weight polyethylene, which has excellent wear resistance, it can directly withstand the friction and impact of coal powder falling and accumulating in the hopper 2, avoiding damage such as dents and perforations on the inner wall of the hopper 2 due to long-term wear, and reducing the replacement frequency of the hopper 2.

[0026] The working principle and usage process of this utility model are as follows: First, the two sets of material chambers of the storage box 1 store high-ash coal and low-ash coal respectively through the corresponding hoppers 2. The two sets of regulating motors 5 drive the corresponding worm gears to rotate in the material pipe 4 (the worm gears are equipped with spiral blades on their outer surface), accurately controlling the output of the two types of coal. The material is transported to the transfer box 6 according to the target ash ratio. During this process, the cover plate 61 can be opened to observe the internal material status and deal with the blockage problem in time. The pull-out electromagnetic iron separator 7 (HY-GD-80 series) in the box adsorbs ferromagnetic impurities to avoid damaging subsequent components or interfering with ash content detection. Subsequently, the material enters the mixing cylinder 9 below the transfer box 6. The stirring rod 13 on the supporting chassis 11 rotates actively under the drive of the rotary motor. At the same time, the control motor 101 meshes with the gear ring 10 through the gear 102, driving the mixing cylinder 9 to rotate in the opposite direction. The dual motion causes the material to be subjected to shearing and dispersing forces and tumbling thrust, resulting in rapid and uniform mixing with small mixing uniformity error, laying the foundation for precise ash content adjustment. After mixing is completed, the sealing partition 92 on the side wall of the mixing cylinder 9 is opened to discharge the well-mixed clean coal, completing the entire adjustment process.

[0027] In the above scheme, it should be noted that: the rotary motor, regulating motor 5, control motor 101 and electromagnetic separator 7 in this application are all existing products, and the specific structure, electrical connection method (circuit layout) and working principle of the rotary motor, regulating motor 5, control motor 101 and electromagnetic separator 7 are all existing publicly disclosed technical means, and will not be described in detail here. It should also be noted that the screw connected to the output shaft of the regulating motor 5 is equipped with spiral blades, and both the screw and the spiral blades are movably sleeved inside the material tube 4, just like the existing "auger structure". This allows the material in the material tube 4 to be conveyed, that is, the material at one end of the material tube 4 is conveyed to the other end.

[0028] 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 of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for adjusting the ash content of refined coal, comprising a storage bin (1), characterized in that: The storage box (1) is divided into a material chamber, and a hopper (2) is connected to the material chamber. A material pipe (4) is connected to the side wall of the storage box (1). The other end of the material pipe (4) is connected to a transfer box (6). A guide ring disc (8) is welded below the transfer box (6). A mixing cylinder (9) is rotatably connected below the guide ring disc (8). The mixing cylinder (9) is rotatably mounted on a support base (11). A stirring rod (13) is rotatably mounted on the support base (11). The stirring rod (13) is located in the mixing cylinder (9). A sealing partition (92) is hinged to the side wall of the mixing cylinder (9).

2. The clean coal ash content adjusting device according to claim 1, characterized in that: The mixing cylinder (9) is fitted with a toothed ring (10) along the outer wall at its lower end. The toothed ring (10) is meshed with a gear (102). A control motor (101) is fixedly mounted on the side wall of the support chassis (11). The gear (102) is fixedly installed at the output end of the control motor (101).

3. The clean coal ash content adjusting device according to claim 1, characterized in that: The lower end face of the guide ring disk (8) is provided with an annular assembly cavity. The top end of the mixing cylinder (9) is integrally formed with an annular boss structure collar (91). The collar (91) is rotatably embedded in the annular assembly cavity of the guide ring disk (8). The upper end face of the support base (11) is provided with an annular positioning groove (12) that is adapted to the outer wall of the mixing cylinder (9). The lower end of the mixing cylinder (9) is rotatably sleeved in the annular positioning groove (12) of the support base (11).

4. The clean coal ash content adjustment device according to claim 1, characterized by: The transfer box (6) is equipped with an electromagnetic iron separator (7) by a pull-out mechanism.

5. The clean coal ash content adjustment device according to claim 1, characterized in that: Two sets of regulating motors (5) are installed on the side wall of the storage box (1). The output ends of the two sets of regulating motors (5) are connected to worm gears. Each set of worm gears is sleeved in the material tube (4). One end of each set of material tubes (4) is connected to the two material cavities of the storage box (1).

6. The clean coal ash content adjustment device according to claim 1, characterized by: The inner wall of each hopper (2) is provided with wear-resistant liners (3), and the wear-resistant liners (3) are fixedly connected to the inner wall of the hopper (2) by bolts.

7. The clean coal ash content adjustment device according to claim 1, characterized by: The transfer box (6) has an observation cavity on its top, and the observation cavity is equipped with a cover plate (61).

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