Efficient drying device for pulverized coal preparation

Abstract

The utility model discloses an efficient drying device for pulverized coal preparation. The efficient drying device comprises a workbench, a crushing assembly and a drying assembly. The crushing assembly comprises a crushing box, a feeding hopper and a crushing roller; a conveying unit is installed in the crushing box, a first discharging opening is formed in the bottom of the crushing box, and a filter screen is arranged on the first discharging opening; the drying assembly comprises a drying drum box, a rotating roller and a stirring drum; the rotating roller and the mixing drum are arranged into hollow structures and are mutually ventilated, one end of the rotating roller is closed, and the other end of the rotating roller is ventilated; the rotary roller and the stirring barrel are arranged in the drying barrel box, ventilation is conducted in the rotary roller and the stirring barrel through the draught fan, and the rotary roller is driven by the rotary motor to rotate in the drying barrel box to conduct all-directional drying; the problem that in the drying process, the drying pipe equipment locally dries the pulverized coal and cannot comprehensively and uniformly dry the pulverized coal is solved, and the drying treatment effect on the pulverized coal is also improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder preparation devices, in particular to a high-efficiency drying device for coal powder preparation. Background Art

[0002] As an important industrial raw material, coal powder is widely used in the combustion and heat treatment processes of the power, chemical, building materials and other industries. In the traditional coal powder drying process, the equipment commonly used includes rotary kiln, fluidized bed dryer, etc.; coal powder is generally a fine powder below 0.15mm, with a wide range of colors, ranging from light gray to black, depending on the quality of the raw coal. It is easier to burn than lump coal and burns quickly. The powder structure is convenient for transportation and reduces the volume. Powder combustion is recognized as one of the efficient and clean combustion methods of coal. Its combustion efficiency can usually reach more than 95%. Coal powder combustion technology is also a mature combustion technology and is widely used in large power station boilers. In order to ensure the quality and efficiency of coal powder, it needs to be dried efficiently to remove moisture from the coal powder and improve its combustion efficiency and stability.

[0003] In the prior art, coal powder drying equipment uses a pressing plate to crush the coal powder. Since the coal powder particle size is very fine, it is difficult to completely crush it using a pressing plate, and coal powder with larger particle size will remain, thus affecting the subsequent drying efficiency. In addition, during the drying process, equipment such as drying tubes can generally only partially dry the coal powder, and cannot dry it comprehensively and evenly. At the same time, there will be impurities before the coal powder is dried. If it is not filtered and removed, it will affect the subsequent use of the coal powder.

[0004] Therefore, it is necessary to improve the efficient drying device for coal powder preparation in the prior art to solve the above problems. Summary of the invention

[0005] The utility model overcomes the shortcomings of the prior art and provides a high-efficiency drying device for preparing coal powder.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: an efficient drying device for preparing coal powder, comprising: a workbench, a crushing component arranged on the workbench, and a drying component installed in conjunction with the crushing component.

[0007] The crushing assembly includes: a crushing box, a feeding funnel installed on the crushing box, and a plurality of crushing rollers arranged in the feeding funnel; a conveying unit is installed in the crushing box, and a first discharge port is arranged at the bottom of one end of the crushing box away from the feeding funnel, and a filter screen is arranged on the first discharge port.

[0008] The drying component is arranged below the crushing box, and the drying component includes: a drying cylinder box, a rotating roller arranged inside the drying cylinder box, and a plurality of stirring cylinders arranged in an array on the rotating roller; the rotating roller and the stirring cylinder are arranged in a hollow structure and ventilated with each other, one end of the rotating roller is arranged in a closed state, and the other end is in a ventilated state; both ends of the rotating roller are rotatably connected to the two side walls of the drying cylinder box, and a plurality of air holes are opened in a circular array on each stirring cylinder.

[0009] In a preferred embodiment of the utility model, a fixed seat is installed on the workbench, a rotating motor is installed on the fixed seat, and both ends of the rotating roller penetrate the two side walls of the drying cylinder box, and one end of the rotating roller in a closed state is fixedly connected to the output end of the rotating motor.

[0010] In a preferred embodiment of the utility model, a connecting seat is installed on a side of the workbench away from the fixed seat, a fan is installed on the connecting seat, and a connecting pipe is fixedly connected to the output end of the fan, and the connecting pipe is connected to one end of the rotating roller in a ventilated state.

[0011] In a preferred embodiment of the utility model, the conveying unit includes: a conveyor belt, a plurality of rotating shafts installed at both ends of the conveyor belt, and a plurality of support seats installed in cooperation with the rotating shafts; the conveyor belt is arranged obliquely in the crushing box, and the position of the first discharge port is arranged below the end of the conveyor belt for downward conveying.

[0012] In a preferred embodiment of the utility model, a drying row is fixedly provided on the side wall of the crushing box, and a dryer is installed on the outer wall of the crushing box, and the receiving end of the drying row is connected to the power end of the dryer through a connecting pipe.

[0013] In a preferred embodiment of the utility model, a first discharge port is cooperated with a first discharge pipe, and a feed port and a second discharge port are respectively provided at both ends of the drying cylinder box, a feed pipe is provided on the feed port, the first discharge pipe is detachably connected to the feed pipe, and the first discharge pipe and the feed pipe are both provided with sealing covers.

[0014] In a preferred embodiment of the utility model, a second discharge pipe is installed on the second discharge port, and a storage box is installed on the workbench, a coal powder exhaust hose is connected to the storage box, and one end of the coal powder exhaust hose close to the second discharge pipe is set as a retractable structure, and the coal powder exhaust hose is detachably connected to the second discharge pipe.

[0015] In a preferred embodiment of the utility model, the pipe opening of the second discharge pipe and the pipe opening of the coal powder exhaust hose are also provided with sealing covers.

[0016] In a preferred embodiment of the utility model, a plurality of support blocks are symmetrically installed on the workbench, each of the support blocks is provided with a groove, and the groove is fixedly installed in contact with the outer wall of the drying cylinder box.

[0017] The utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0018] The utility model proposes a high-efficiency drying device for preparing coal powder, which arranges rotating rollers and a stirring drum inside a drying cylinder box, makes the interior of the drying cylinder box hollow, utilizes a fan to ventilate the rotating rollers and the stirring drum, and drives the rotating motor to rotate them in the drying cylinder box to carry out all-round drying, thereby solving the problem that the drying tube and other equipment partially dries the coal powder during the drying process and cannot dry it comprehensively and evenly, and also improves the drying treatment effect of the coal powder.

[0019] The utility model crushes the agglomerated coal powder by arranging crushing rollers on the crushing box, conveys the crushed coal powder to the filtering place for impurity removal by means of a conveyor belt, and simultaneously arranges a drying row in the crushing box to preliminarily dry the crushed coal powder, thereby solving the problem that the coal powder particle size is very fine and it is difficult to crush it thoroughly by using a pressing plate and coal powder with larger particle size will be left, and also improves the subsequent drying efficiency to a certain extent, and also solves the problem that the subsequent use of the coal powder will be affected if filtering and impurity removal are not performed before the coal powder is dried. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0021] Figure 1 It is a three-dimensional structural diagram of a preferred embodiment of the utility model;

[0022] Figure 2 It is a front view of a preferred embodiment of the utility model;

[0023] Figure 3 It is an internal structure diagram of a preferred embodiment of the utility model;

[0024] In the figure: 1. workbench; 2. crushing box; 3. drying cylinder box; 4. feeding funnel; 5. fixing seat; 6. supporting block; 7. fan; 8. coal powder exhaust hose; 9. rotating motor; 10. second discharge pipe; 11. storage box; 12. conveyor belt; 13. supporting seat; 14. crushing roller; 15. rotating shaft; 16. first discharge pipe; 17. feeding pipe; 18. rotating roller; 19. mixing drum; 20. filter screen. DETAILED DESCRIPTION

[0025] The present invention will now be further described in detail in conjunction with the accompanying drawings and embodiments. These drawings are simplified schematic diagrams that only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0026] like Figure 1 and Figure 2 As shown, a high-efficiency drying device for coal powder preparation includes: a workbench 1, a crushing assembly arranged on the workbench 1, and a drying assembly installed in conjunction with the crushing assembly; the crushing assembly includes: a crushing box 2, a feeding funnel 4 installed on the crushing box 2, and a plurality of crushing rollers 14 arranged in the feeding funnel 4; a conveying unit is installed in the crushing box 2, and a first discharge port is arranged at the bottom of one end of the crushing box 2 away from the feeding funnel 4, and a filter screen 20 is arranged in conjunction with the first discharge port.

[0027] The drying component is arranged below the crushing box 2, and the drying component includes: a drying cylinder box 3, a rotating roller 18 arranged inside the drying cylinder box 3, and a plurality of stirring drums 19 arranged in an array on the rotating roller 18; the rotating roller 18 and the stirring drum 19 are arranged as hollow structures and ventilated with each other, one end of the rotating roller 18 is arranged in a closed state, and the other end is in a ventilated state; both ends of the rotating roller 18 are rotatably connected to the two side walls of the drying cylinder box 3, and a plurality of air holes are opened in a circular array on each stirring drum 19.

[0028] like Figure 3 As shown, a fixed seat 5 is installed on the workbench 1, a rotating motor 9 is installed on the fixed seat 5, and both ends of the rotating roller 18 pass through the two side walls of the drying cylinder box 3, and the end of the rotating roller 18 in a closed state is fixedly connected to the output end of the rotating motor 9; a connecting seat is installed on the side of the workbench 1 away from the fixed seat 5, a fan 7 is installed on the connecting seat, and the output end of the fan 7 is fixedly connected to a connecting pipe, which is connected to the end of the rotating roller 18 in a ventilated state.

[0029] By arranging a rotating roller 18 and a stirring drum 19 inside the drying cylinder box and making the interior of the drying cylinder box hollow, a fan 7 is used to ventilate the rotating roller 18 and the stirring drum 19, and the rotating motor 9 drives them to rotate in the drying cylinder box to perform all-round drying, thereby solving the problem that the drying tube and other equipment partially dry the coal powder and cannot dry it comprehensively and evenly during the drying process, and also improving the drying effect of the coal powder.

[0030] The conveying unit includes: a conveyor belt 12, a plurality of rotating shafts 15 installed at both ends of the conveyor belt 12, and a plurality of supporting seats 13 installed in cooperation with the rotating shafts 15; the conveyor belt 12 is arranged obliquely in the crushing box 2, and the position of the first discharge port is arranged below the end of the conveyor belt 12 for downward conveying.

[0031] A drying row is fixedly arranged on the side wall inside the crushing box 2, and a dryer is installed on the outer wall of the crushing box 2, and the receiving end of the drying row is connected to the power end of the dryer through a connecting pipe; a first discharge port is cooperated with a first discharge pipe 16, and a feed port and a second discharge port are respectively arranged at both ends of the drying cylinder box 3, and a feed pipe 17 is arranged on the feed port, and the first discharge pipe 16 and the feed pipe 17 are detachably connected, and the first discharge pipe 16 and the feed pipe 17 are both equipped with sealing covers.

[0032] A second discharge pipe 10 is installed on the second discharge port, and a storage box 11 is installed on the workbench 1. A coal powder exhaust hose 8 is connected to the storage box 11. The end of the coal powder exhaust hose 8 close to the second discharge pipe 10 is set as a retractable structure, and the coal powder exhaust hose 8 is detachably connected to the second discharge pipe 10.

[0033] The pipe openings of the second discharge pipe 10 and the coal powder exhaust hose 8 are also provided with sealing covers; a number of support blocks 6 are symmetrically installed on the workbench 1, each support block 6 is provided with a groove, and the groove is fixedly installed in contact with the outer wall of the drying cylinder box.

[0034] Among them, an opening and closing door and an opening and closing handle are provided on the side wall of the crushing box 2, which is convenient for the staff to check each device in time and clean the filter screen 20 in time; by setting a crushing roller 14 on the crushing box 2 to crush the agglomerated coal powder, the conveyor belt 12 is used to convey the crushed coal powder to the filter for impurity removal, and at the same time, a drying row is set in the crushing box 2 to perform preliminary drying on the crushed coal powder, which solves the problem that the coal powder particle size is very fine, which makes it difficult to completely crush it by using a pressing plate and will leave coal powder with larger particle size, and also improves the subsequent drying efficiency to a certain extent.

[0035] When the utility model is used, the coal blocks to be dried are crushed by the crushing rollers 14 in the feed hopper 4, and then fall onto the conveyor belt 12 in the crushing box 2. Before crushing, the dryer has been started to increase the heat of the drying row, and the temperature in the crushing box 2 is increased to play a drying role. The preliminarily dried coal powder is transported to the first discharge port through the conveyor belt 12, and is filtered and removed by the filter screen 20.

[0036] The filtered coal powder falls into the drying cylinder box 3 through the first discharge pipe 16 and the feed pipe 17. After a certain amount of coal powder is accumulated, the rotating roller 18 is driven by the rotating motor 9 to rotate, and the coal powder below the feed port is broken up to prevent the coal powder from blocking the feed port. When the coal powder accumulates to two-thirds of the drying cylinder box 3, the crushing and filtering are stopped. After waiting for the remaining to fall into the drying cylinder box 3, the openings of the feed pipe 17 and the second discharge pipe 10 are sealed with a sealing cover, and then the rotating roller 18 rotates. At the same time, the fan 7 sends hot air into the rotating roller 18, and the hot air is sent out through the air holes on the mixing drum 19 to dry the coal powder comprehensively and evenly. After waiting for the drying to be completed, the sealing cover is opened, and the coal powder exhaust hose 8 is connected to the second discharge pipe 10, and then the coal powder and are sucked into the storage box 11 through the coal powder exhaust hose 8 to wait for subsequent processing.

[0037] The above is based on the ideal embodiment of the utility model. Through the above description, relevant personnel can make various changes and modifications without deviating from the technical concept of the utility model. The technical scope of this utility model is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A high-efficiency drying device for preparing coal powder, comprising: A workbench (1), a crushing assembly arranged on the workbench (1), and a drying assembly installed in coordination with the crushing assembly, characterized in that: The crushing assembly comprises: a crushing box (2), a feeding hopper (4) installed on the crushing box (2), and a plurality of crushing rollers (14) arranged in the feeding hopper (4); a conveying unit is installed in the crushing box (2), and a first discharge port is arranged at the bottom of one end of the crushing box (2) away from the feeding hopper (4), and a filter screen (20) is arranged on the first discharge port; The drying component is arranged below the crushing box (2), and comprises: a drying cylinder box (3), a rotating roller (18) arranged inside the drying cylinder box (3), and a plurality of stirring cylinders (19) arranged in an array on the rotating roller (18); the rotating roller (18) and the stirring cylinder (19) are arranged as hollow structures and are ventilated with each other, one end of the rotating roller (18) is arranged in a sealed state, and the other end is in a ventilated state; both ends of the rotating roller (18) are rotatably connected to the two side walls of the drying cylinder box (3), and a plurality of air holes are arranged in a circumferential array on each stirring cylinder (19).

2. The high-efficiency drying device for preparing coal powder according to claim 1, characterized in that: A fixed seat (5) is installed on the workbench (1), a rotating motor (9) is installed on the fixed seat (5), and both ends of the rotating roller (18) pass through the two side walls of the drying cylinder box (3), and one end of the rotating roller (18) in a sealed state is fixedly connected to the output end of the rotating motor (9).

3. The high-efficiency drying device for preparing coal powder according to claim 2, characterized in that: A connecting seat is installed on a side of the workbench (1) away from the fixed seat (5), a fan (7) is installed on the connecting seat, and a connecting pipe is fixedly connected to the output end of the fan (7), and the connecting pipe is connected to the end of the rotating roller (18) in a ventilated state.

4. The high-efficiency drying device for preparing coal powder according to claim 1, characterized in that: The conveying unit comprises: a conveying belt (12), a plurality of rotating shafts (15) installed at both ends of the conveying belt (12), and a plurality of supporting seats (13) installed in cooperation with the rotating shafts (15); the conveying belt (12) is arranged obliquely in the crushing box (2), and the first discharge port is arranged below the end of the conveying belt (12) for downward conveying.

5. The high-efficiency drying device for preparing coal powder according to claim 1, characterized in that: A drying row is fixedly arranged on the side wall of the crushing box (2), and a dryer is installed on the outer wall of the crushing box (2). The receiving end of the drying row is connected to the power end of the dryer through a connecting pipe.

6. The high-efficiency drying device for preparing pulverized coal according to claim 1, characterized in that: A first discharge port is provided with a first discharge pipe (16), and a feed port and a second discharge port are provided at both ends of the drying cylinder box (3), a feed port is provided with a feed pipe (17), the first discharge pipe (16) and the feed pipe (17) are detachably connected, and both the first discharge pipe (16) and the feed pipe (17) are provided with sealing covers.

7. The high-efficiency drying device for preparing coal powder according to claim 6, characterized in that: A second discharge pipe (10) is installed on the second discharge port, and a storage box (11) is installed on the workbench (1). A coal powder exhaust hose (8) is connected to the storage box (11). One end of the coal powder exhaust hose (8) close to the second discharge pipe (10) is configured as a retractable structure, and the coal powder exhaust hose (8) is detachably connected to the second discharge pipe (10).

8. The high-efficiency drying device for preparing coal powder according to claim 7, characterized in that: The pipe opening of the second discharge pipe (10) and the pipe opening of the coal powder exhaust hose (8) are also provided with sealing covers.

9. The high-efficiency drying device for preparing coal powder according to claim 1, characterized in that: A plurality of support blocks (6) are symmetrically mounted on the workbench (1), each of the support blocks (6) being provided with a groove, and the groove is fixedly mounted in contact with the outer wall of the drying cylinder box.

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