Drying device for raw coal

Abstract

The utility model provides a raw coal drying device which comprises a processing box, a coal feeding conveying belt and a material taking box door, the coal feeding conveying belt is installed on the upper portion in the processing box, a vibrating screen plate is arranged on the right side in the processing box, springs are installed on the periphery below the vibrating screen plate respectively, and a slag crushing frame is arranged below the vibrating screen plate. The right side of the slag crushing frame is connected with the treatment box through a side connecting plate, and the lower part of the slag crushing frame is connected with a guide-out box. Compared with the prior art, the slag crushing device disclosed by the utility model has the following beneficial effects that by arranging the coal feeding conveying belt, the vibrating screen plate, the spring, the screen, the vibrating motor, the guide-out box and the slag crushing outlet, when raw coal enters the treatment box through the coal feeding conveying belt, the raw coal is crushed; raw coal can be conveyed to fall onto the vibrating screen plate, disintegrating slag and pulverized coal mixed in the raw coal can be quickly screened and separated under the vibration of the vibrating screen plate, the drying efficiency is improved, the quality of the raw coal is improved, and the separated disintegrating slag and pulverized coal can be discharged outwards through the disintegrating slag outlet.

Description

Technical Field

[0001] The utility model belongs to the field of raw coal drying, and particularly relates to a drying device for raw coal. Background Technique

[0002] Raw coal drying is an important link in the coal processing process. By drying, the moisture content in raw coal can be reduced, and the quality and combustion efficiency of coal can be improved. However, at present, during the raw coal drying process, there are problems that there are more crushed slag and coal powder doped in it and it is inconvenient to separate from the raw coal, which brings many adverse effects to coal processing and use. The doped crushed slag and coal powder will affect the drying efficiency. Due to the existence of crushed slag and coal powder, the drying time is prolonged and the energy consumption increases. Moreover, the difficult-to-separate crushed slag and coal powder will reduce the quality of raw coal. The existence of these impurities will reduce the calorific value of raw coal and affect its combustion performance. In some application fields with high requirements for coal quality, such as power generation and metallurgy, low-quality raw coal may not meet the use requirements, thus affecting production efficiency and product quality. In addition, the doped crushed slag and coal powder will also increase the difficulty of transportation and storage. Due to the existence of impurities, the volume and weight of raw coal increase, and the transportation cost rises. To solve this problem, we have developed a drying device for raw coal. Content of the Utility Model

[0003] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide a drying device for raw coal to solve the problems put forward in the above background technique.

[0004] The utility model is realized through the following technical solutions: A drying device for raw coal, comprising: a processing box, a coal feeding conveyor belt and a material taking box door. Above the interior of the processing box, a coal feeding conveyor belt is installed. On the right side inside the processing box, a vibrating sieve plate is provided. Around the lower part of the vibrating sieve plate, a spring is respectively installed. Below the vibrating sieve plate, a crushed slag frame is provided. The right side of the crushed slag frame is connected to the processing box through a side connecting plate. Below the crushed slag frame, a lead-out box is connected. Inside the right side of the vibrating sieve plate, a sieve mesh is installed. Below the middle of the sieve mesh, a vibrating motor is installed;

[0005] Below the left side of the vibrating sieve plate, a guiding conveyor belt is installed. Below the left side of the guiding conveyor belt, a sliding plate is installed. Below the sliding plate, a partition plate is installed. Below the left side inside the processing box, a drying chamber is provided;

[0006] On the left and right sides inside the drying chamber, an electric heating plate is respectively installed. On the left side above the processing box, three pre-drying boxes are installed. On the upper surface of each pre-drying box, a group of electric heating wire meshes are installed. Inside the middle of the three pre-drying boxes, an axial flow fan is respectively installed.

[0007] As a preferred embodiment, the lower ends of the two springs on the left side are connected to the slag crushing frame, and the lower ends of the two springs on the right side are connected to the side connecting plate.

[0008] As a preferred embodiment, two material taking box doors are installed below the left side of the processing box through hinges, and the positions of the material taking box doors are symmetrical to the positions of the drying chambers.

[0009] As a preferred embodiment, a slag crushing outlet is provided below the right side of the processing box, and the slag crushing outlet is communicated with the inside of the export box.

[0010] As a preferred embodiment, a plurality of ventilation holes are opened above the back surface of the processing box, and a hot air discharge valve is installed below the left side of the back surface of the processing box, and the hot air discharge valve is communicated with the inside of the drying chamber.

[0011] As a preferred embodiment, the left end of the coal feeding conveyor belt extends out of the inside of the processing box, and its left end is connected to the processing box through two support rods.

[0012] After adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0013] 1. By providing the coal feeding conveyor belt, the vibrating sieve plate, the springs, the sieve mesh, the vibrating motor, the export box and the slag crushing outlet, when the raw coal enters the inside of the processing box through the coal feeding conveyor belt, the raw coal can be conveyed and dropped onto the vibrating sieve plate. Under the vibration of the vibrating sieve plate, the slag and pulverized coal mixed in the raw coal can be quickly screened and separated, the drying efficiency can be improved, the quality of the raw coal can be improved, and the separated slag and pulverized coal can be discharged outwards through the slag crushing outlet.

[0014] 2. By providing the pre-drying box, the electric heating wire mesh, the axial flow fan, the import conveyor belt, the sliding plate, the drying chamber and the electric heating plate, when the raw coal is conveyed, the axial flow fan can first blow hot air on the raw coal above the coal feeding conveyor belt to perform preliminary pre-drying treatment on it. After the raw coal is separated from the slag and pulverized coal, it can enter the drying chamber to dry the raw coal, and the heat of the electric heating plate can act more concentratedly on the raw coal itself, thereby improving the drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a schematic diagram of the overall structure of the drying device for raw coal of the present utility model.

[0017] Figure 2 This is a schematic diagram of the internal cross-section of the drying device for raw coal of the present utility model.

[0018] Figure 3 This is a schematic top view of the vibrating sieve plate in the drying device for raw coal of the present utility model.

[0019] Figure 4 This is a schematic top view cross-section of the pre-drying box in the drying device for raw coal of the present utility model.

[0020] In the figure, 1 is the treatment box; 2 is the coal feeding conveyor belt; 3 is the pre-drying box; 4 is the electric heating wire mesh; 5 is the door of the material taking box; 6 is the slag discharge outlet; 7 is the vibrating sieve plate; 8 is the spring; 9 is the slag box; 10 is the export box; 11 is the vibrating motor; 12 is the side connecting plate; 13 is the import conveyor belt; 14 is the drying chamber; 15 is the electric heating plate; 16 is the sliding plate; 17 is the axial flow fan; 18 is the screen; 19 is the partition board. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 4 , the present utility model provides a technical solution: a drying device for raw coal, including: a treatment box 1, a coal feeding conveyor belt 2, and a door 5 of the material taking box. The coal feeding conveyor belt 2 is installed above the interior of the treatment box 1, and a vibrating sieve plate 7 is provided on the right side of the interior of the treatment box 1. A spring 8 is respectively installed around the lower part of the vibrating sieve plate 7. A slag box 9 is provided below the vibrating sieve plate 7. The right side of the slag box 9 is connected to the treatment box 1 through a side connecting plate 12. The lower part of the slag box 9 is connected to an export box 10. A screen 18 is installed on the right side inside the vibrating sieve plate 7, and a vibrating motor 11 is installed in the middle below the screen 18;

[0023] An import conveyor belt 13 is installed below the left side of the vibrating sieve plate 7. A sliding plate 16 is installed below the left side of the import conveyor belt 13. A partition board 19 is installed below the sliding plate 16. A drying chamber 14 is provided below the left side of the interior of the treatment box 1;

[0024] An electric heating plate 15 is respectively installed on the left and right sides inside the drying chamber 14. Three pre-drying boxes 3 are installed on the left side above the treatment box 1. A group of electric heating wire meshes 4 are respectively installed on the upper surface of each pre-drying box 3. An axial flow fan 17 is respectively installed in the middle of the three pre-drying boxes 3.

[0025] The lower ends of the two springs 8 on the left are connected to the slag box 9, and the lower ends of the two springs 8 on the right are connected to the side connecting plate 12.

[0026] Two material taking box doors 5 are installed on the lower left side of the processing box 1 through hinges, and the positions of the material taking box doors 5 are symmetrical to the position of the drying chamber 14.

[0027] A slag outlet 6 is provided on the lower right side of the processing box 1, and the slag outlet 6 is internally connected to the inside of the export box 10.

[0028] A plurality of ventilation holes are opened in the upper part of the back surface of the processing box 1, and a hot air discharge valve is installed on the lower left side of the back surface of the processing box 1. The hot air discharge valve is internally connected to the drying chamber 14.

[0029] The left end of the coal feeding conveyor belt 2 extends out of the inside of the processing box 1, and its left end is connected to the processing box 1 through two support rods.

[0030] Please refer to Figures 1 to 4 As the first embodiment of the present utility model: In actual use, raw coal is conveyed into the processing box 1 through the coal feeding conveyor belt 2. When the raw coal is conveyed into the inside of the processing box 1, the electrothermal wire mesh 4 is powered on for heating. The axial flow fan 17 sucks the heat generated by the electrothermal wire mesh 4 and blows hot air towards the raw coal above the coal feeding conveyor belt 2, so as to be able to perform preliminary drying treatment on the raw coal, thereby improving the subsequent drying efficiency. At the same time, the coal feeding conveyor belt 2 can convey the raw coal to the right and make it fall above the vibrating sieve plate 7. The vibrating motor 11 can drive the sieve mesh 18 to vibrate. When the raw coal falls above the sieve mesh 18, the vibrating sieve mesh 18 can separate the pulverized coal mixed in the raw coal from the slag. When the sieve mesh 18 vibrates, it can drive the four springs 8 to vibrate through the vibrating sieve plate 7, reducing the conduction of vibration to the processing box 1. And when vibrating, the spring 8 rebounds to give the sieve mesh 18 an upward acting force, making the raw coal continuously tossed up and down on the sieve mesh 18. This dynamic movement mode is beneficial to the loosening and stratification of the raw coal, making it easier for fine particles to pass through the sieve mesh 18. After the slag and pulverized coal are screened, they enter the export box 10, and then slide out through the slag outlet 6, realizing the separation of the slag pulverized coal from the raw coal, thereby improving the quality of the raw coal.

[0031] Please refer to Figure 1 and Figure 2, as the second embodiment of the present utility model: Further elaborating based on the first embodiment, the raw coal larger than the aperture of the sieve 18 slides left and downward above the vibrating sieve plate 7 to the introduction conveyor belt 13, and then is conveyed by the introduction conveyor belt 13 and drops to the sliding plate 16. Next, it slides into the drying chamber 14 through the sliding plate 16. The inside of the drying chamber 14 can be heated by the electric heating plate 15, so as to be able to dry the raw coal. After the raw coal separates the pulverized coal and the slag, the heat of the electric heating plate 15 can act more concentratedly on the raw coal itself, thereby improving the drying efficiency. The drying time can be adjusted according to the actual amount of coal added. After drying is completed, the door of the material taking box 5 can be opened to take out the dried raw coal.

[0032] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A drying device for raw coal, comprising: A processing box (1), a coal feeding conveyor belt (2) and a material taking box door (5), wherein the coal feeding conveyor belt (2) is installed on the upper part of the processing box (1), and the characteristics are as follows: a vibrating screen plate (7) is provided on the right side of the processing box (1), a spring (8) is installed on the four sides below the vibrating screen plate (7), a slag crushing frame (9) is provided below the vibrating screen plate (7), the right side of the slag crushing frame (9) is connected to the processing box (1) through a side connecting plate (12), a guide box (10) is connected below the slag crushing frame (9), a screen (18) is installed on the right side of the vibrating screen plate (7), and a vibration motor (11) is installed in the middle below the screen (18); An inlet conveyor belt (13) is installed at the lower left side of the vibrating screen plate (7), a sliding plate (16) is installed at the lower left side of the inlet conveyor belt (13), a partition plate (19) is installed below the sliding plate (16), and a drying chamber (14) is provided at the lower left side of the processing box (1); An electric heating plate (15) is installed on the left and right sides of the drying chamber (14), three pre-drying boxes (3) are installed on the left side above the processing box (1), and a group of electric heating wire meshes (4) are installed on the upper surface of each pre-drying box (3), and an axial flow fan (17) is installed in the middle of each of the three pre-drying boxes (3).

2. The drying device for raw coal according to claim 1, characterized in that: The lower ends of the two springs (8) on the left are connected to the slag crushing frame (9), and the lower ends of the two springs (8) on the right are connected to the side connecting plate (12).

3. The drying device for raw coal according to claim 2, characterized in that: Two material taking box doors (5) are installed at the lower left side of the processing box (1) via hinges, and the positions of the material taking box doors (5) are symmetrical to the position of the drying chamber (14).

4. The drying device for raw coal according to claim 3, characterized in that: A slag outlet (6) is provided at the lower right side of the processing box (1), and the slag outlet (6) is connected to the interior of the outlet box (10).

5. The drying device for raw coal according to claim 4, characterized in that: A plurality of ventilation holes are provided on the upper back of the processing box (1), and a hot air exhaust valve is installed on the lower left side of the back of the processing box (1), and the hot air exhaust valve is connected to the interior of the drying chamber (14).

6. The drying device for raw coal according to claim 1, characterized in that: The left end of the coal feeding conveyor belt (2) extends out of the interior of the processing box (1), and the left end is connected to the processing box (1) via two support rods.

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