Boiler fuel pretreatment device

Abstract

The utility model relates to a boiler fuel pretreatment device, and relates to the field of boiler fuel treatment devices. The fuel crushing device comprises a crushing mechanism, a hopper is installed at the upper end of the crushing mechanism, a discharging mechanism is arranged at the lower end of the crushing mechanism, a crushing mechanism fixedly connected with the lower end of the crushing mechanism is arranged on the inner side of the discharging mechanism, the crushing mechanism crushes and screens crushed fuel, and the discharging mechanism discharges the crushed and screened fuel to the outer side. When the pulverized coal is discharged, air is evenly blown into the box body through cooperation of a suction fan and an air blowing box so that the pulverized coal can be blown to the right side, at the moment, an air blower blows out the pulverized coal through an air blowing pipe and sends the pulverized coal to a combustor, and therefore the pulverized coal discharging operation is more convenient; and the environment pollution caused by the scattering of the pulverized coal is also avoided by the closed discharging mode.

Description

Technical Field

[0001] The present application relates to the technical field of boiler fuel processing devices, and in particular to a boiler fuel pre-processing device. Background Art

[0002] When the boiler is working, the burner needs to continuously spray fire to heat the boiler. The burner generally sprays coal powder mixed with air into the inside of the boiler for combustion and heating. The coal powder is made by crushing coal blocks using a crushing device.

[0003] The existing coal powder processing crushing device crushes the coal blocks and then discharges the coal powder to the outside through a discharge pipe for collection, and then sends the collected coal powder to the burner for combustion. During the entire operation process, the coal powder will be scattered everywhere and pollute the environment. At the same time, the coal powder needs to be collected and transported to the burner for loading, which makes the handling of the crushed coal powder inconvenient. Utility Model Content

[0004] In order to solve the problem that the existing pulverizing device for pulverized coal processing has inconvenient handling operations for the pulverized coal, the present application provides a boiler fuel pre-treatment device.

[0005] The present application provides a boiler fuel pretreatment device that adopts the following technical solution:

[0006] A boiler fuel pre-treatment device includes a crushing mechanism, a hopper is installed at the upper end of the crushing mechanism, and a discharge mechanism is provided at the lower end of the crushing mechanism. A crushing mechanism fixedly connected to the lower end of the crushing mechanism is provided inside the discharge mechanism. The crushing mechanism crushes and screens the crushed fuel, and the discharge mechanism discharges the crushed and screened fuel to the outside;

[0007] The discharging mechanism includes a box body, a suction fan is fixed on the left side of the box body, and a blowing box is provided on the inside of the box body for blowing the wind blown by the suction fan evenly to the right. A hair dryer is fixed on the right side of the box body, and a blowing pipe is connected to the right end of the hair dryer.

[0008] By adopting the above technical solution, when the crushed coal powder is discharged, the suction fan and the blower box cooperate to blow air evenly into the box to blow the coal powder to the right. At this time, the blower blows the coal powder outward through the blower pipe and sends it to the burner, thereby making the coal powder discharge operation more convenient, and the closed discharge method also prevents the coal powder from scattering and polluting the environment.

[0009] Optionally, the hair dryer box is a rectangular box body arranged longitudinally, and the right side of the hair dryer box is provided with evenly arranged air outlets.

[0010] By adopting the above technical solution, the hair dryer box blows the air blown in by the suction fan to the right through the air outlet and sends it to the hair dryer to be blown out.

[0011] Optionally, the crushing mechanism includes a collecting bucket, a crushing roller is provided at the inner bottom of the collecting bucket, a driving member for driving the crushing roller to rotate is fixed on the left side of the collecting bucket, and evenly distributed sieve holes are opened at the inner bottom of the collecting bucket.

[0012] By adopting the above technical solution, the collecting bucket collects the crushed coal blocks, and the crushing roller is driven by the driving member to crush the crushed coal blocks, and finally the crushed coal powder is discharged downward through the sieve holes.

[0013] Optionally, a mounting edge is fixed to the edge of the upper port of the collecting hopper, and an arc-shaped crushing groove is provided at the inner bottom of the collecting hopper, and the sieve holes are opened on the inner surface of the crushing groove.

[0014] By adopting the above technical solution, the collecting bucket collects the crushed coal blocks by using the crushing trough and crushes them in cooperation with the crushing roller, while the sieve holes on the crushing trough discharge the qualified coal powder to the outside.

[0015] Optionally, evenly distributed crushing teeth are fixed to the outside of the crushing roller, and rotating shafts are fixed to both ends of the crushing roller, and the lower side of the crushing roller is arranged close to the bottom of the crushing groove.

[0016] By adopting the above technical solution, the crushing roller uses the crushing teeth arranged on the outer surface to crush the crushed coal blocks.

[0017] Optionally, the driving member includes a motor fixed to the outside of the collecting bucket and a rotating gear fixed to the rotating shaft, and a driving gear meshing with the rotating gear is fixed to the output shaft of the motor.

[0018] By adopting the above technical solution, the motor drives the rotating gear to rotate through the driving gear, thereby driving the crushing roller to crush and roll.

[0019] Optionally, the crushing mechanism includes a shell with upper and lower openings, two mutually engaging crushing rollers are installed on the inner side of the shell, and the front ends of the central axes of the two crushing rollers pass through the side walls of the shell and are connected by two transmission gears, the rear end of the central axis of one of the crushing rollers passes through the side walls of the shell and is fixedly connected to a crushing motor, a support plate is fixed to the edge of the lower port of the shell, and a clamping ring is fixed to the lower side of the support plate.

[0020] By adopting the above technical solution, the crushing motor drives one of the crushing rollers to rotate, and one of the crushing rollers drives the other crushing roller to rotate through the transmission of two transmission gears, so that the two crushing rollers crush the coal blocks.

[0021] Optionally, a cover is fixed to the lower end of the hopper and is sleeved on the upper end of the shell, and the size of the lower port of the cover is the same as the outer size of the shell.

[0022] By adopting the above technical solution, the hopper is installed and fixed on the outer shell through the cover.

[0023] In summary, this application has the following beneficial technical effects:

[0024] When discharging the crushed coal powder, the suction fan and the blower box work together to blow air evenly into the box to blow the coal powder to the right. At this time, the blower blows the coal powder out through the blower pipe and sends it to the burner, making the coal powder discharging operation more convenient. The closed discharging method also prevents the coal powder from scattering and polluting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a stereogram in the embodiment of the present application;

[0026] Figure 2 Schematic diagram of the discharge mechanism in the embodiment of the present application;

[0027] Figure 3 is a schematic diagram of a crushing mechanism in an embodiment of the present application;

[0028] Figure 4 Schematic diagram of the collecting bucket in the embodiment of the present application;

[0029] Figure 5 Schematic diagram of a crushing roller in an embodiment of the present application;

[0030] Figure 6 is a schematic diagram of a driving member in an embodiment of the present application;

[0031] Figure 7 Schematic diagram of the crushing mechanism in the embodiment of the present application;

[0032] Figure 8 It is a schematic diagram of the hopper in the embodiment of the present application.

[0033] Explanation of the accompanying symbols: 1. Discharge mechanism; 11. Suction fan; 12. Blowing box; 13. Box body; 14. Blower; 15. Blowing pipe; 2. Crushing mechanism; 21. Crushing roller; 22. Housing; 23. Transmission gear; 24. Support plate; 25. Clamping ring; 3. Hopper; 31. Cover; 4. Crushing mechanism; 41. Driving part; 411. Motor; 412. Rotating gear; 413. Driving gear; 42. Collecting bucket; 421. Crushing trough; 422. Mounting edge; 423. Sieve hole; 43. Crushing roller; 431. Rotating shaft; 432. Crushing teeth. DETAILED DESCRIPTION

[0034] The present application is further described in detail below with reference to the accompanying drawings.

[0035] The embodiment of the present application discloses a boiler fuel pre-treatment device. Figure 1 , including a crushing mechanism 2, a hopper 3 is installed at the upper end of the crushing mechanism 2, and a discharging mechanism 1 is provided at the lower end of the crushing mechanism 2. A crushing mechanism 4 fixedly connected to the lower end of the crushing mechanism 2 is provided on the inner side of the discharging mechanism 1. The crushing mechanism 4 crushes and screens the crushed fuel, and the discharging mechanism 1 discharges the crushed and screened fuel to the outside and throws the coal blocks into the hopper 3. At this time, the crushing mechanism 2 crushes the coal blocks, and the crushed coal blocks fall into the inner side of the crushing mechanism 4 for crushing processing, and the crushed coal powder is discharged outward from the discharge direction of the discharge mechanism 1 and sent to the burner.

[0036] Reference Figure 2 The discharging mechanism 1 includes a box body 13, a suction fan 11 is fixed on the left side of the box body 13, and a blowing box 12 is provided on the inner side of the box body 13 to blow the wind blown by the suction fan 11 evenly to the right. A hair dryer 14 is fixed on the right side of the box body 13, and the right end of the hair dryer 14 is connected with a blowing pipe 15. When the crushed coal powder is discharged, the suction fan 11 and the blowing box 12 cooperate to blow air evenly into the box body 13 to blow the coal powder to the right. At this time, the hair dryer 14 blows the coal powder outward through the blowing pipe 15 and sends it to the burner, thereby making the coal powder discharging operation more convenient, and the closed discharging method also avoids the coal powder from floating around and polluting the environment.

[0037] The hair dryer box 12 is a rectangular box body arranged longitudinally. The rectangular box body can make the air outlets better distributed on the inner side of the box body 13, so as to achieve uniform blowing over a large area. The right side of the hair dryer box 12 is provided with evenly arranged air outlets. The hair dryer box 12 blows the air blown in by the suction fan 11 to the right through the air outlet and sends it to the hair dryer 14 to be blown out.

[0038] Reference Figure 3 The crushing mechanism 4 includes a collecting bucket 42, a crushing roller 43 is provided at the inner bottom of the collecting bucket 42, and a driving member 41 for driving the crushing roller 43 to rotate is fixed on the left side of the collecting bucket 42. The inner bottom of the collecting bucket 42 is provided with evenly distributed sieve holes 423. The collecting bucket 42 collects the crushed coal blocks and drives the crushing roller 43 to crush the crushed coal blocks through the driving member 41. Finally, the crushed coal powder is discharged downward through the sieve holes 423.

[0039] Reference Figure 4The upper end edge of the collecting hopper 42 is fixed with a mounting edge 422, and the sieve hole 423 is provided on the inner surface of the crushing groove 421. The collecting hopper 42 collects the crushed coal blocks by the crushing groove 421 and crushes them with the crushing roller 43, while the sieve hole 423 on the crushing groove 421 discharges the qualified coal powder to the outside.

[0040] An arc-shaped crushing groove 421 is provided at the inner bottom of the collecting hopper 42 . The arc-shaped crushing groove 421 allows the crushed coal blocks to be concentrated to the bottom of the crushing groove 421 under their own weight, thereby facilitating the crushing process of the crushing roller 43 .

[0041] Reference Figure 5 The outer side of the crushing roller 43 is fixed with evenly arranged crushing teeth 432. The crushing roller 43 crushes the crushed coal blocks using the crushing teeth 432 arranged on the outer surface. The two ends of the crushing roller 43 are fixed with a rotating shaft 431. The crushing roller 43 is rotatably mounted on the inner side of the collecting bucket 42 using the rotating shaft 431.

[0042] The lower side of the crushing roller 43 is arranged close to the bottom of the crushing groove 421. The crushing roller 43 is close to the bottom of the crushing groove 421 so that the crushing teeth 432 on the crushing roller 43 can cooperate with the inner surface of the crushing groove 421 to crush the coal blocks. Since the gap between the crushing roller 43 and the bottom of the crushing groove 421 is limited, the coal blocks that pass through cannot pass through when they are large in size. Therefore, under the movement of the crushing teeth 432, they are squeezed and crushed through the gap between the crushing roller 43 and the bottom of the crushing groove 421, thereby having a better crushing effect.

[0043] Reference Figure 6 The driving member 41 includes a motor 411 fixed to the outside of the collecting bucket 42 and a rotating gear 412 fixed on the rotating shaft 431. A driving gear 413 engaged with the rotating gear 412 is fixed on the output shaft of the motor 411. The motor 411 drives the rotating gear 412 to rotate through the driving gear 413, thereby driving the crushing roller 43 to crush and roll.

[0044] Reference Figure 7 The crushing mechanism 2 includes a housing 22 with upper and lower openings. Two mutually engaged crushing rollers 21 are installed on the inner side of the housing 22. The front ends of the central axes of the two crushing rollers 21 pass through the side walls of the housing 22 and are connected by two transmission gears 23. The rear end of the central axis of one of the crushing rollers 21 passes through the side walls of the housing 22 and is fixedly connected to a crushing motor. The crushing motor drives one of the crushing rollers 21 to rotate, and one of the crushing rollers 21 drives the other crushing roller 21 to rotate through the two transmission gears 23, so that the two crushing rollers 21 crush the coal blocks.

[0045] A support plate 24 is fixed to the edge of the lower port of the shell 22, and a clamping ring 25 is fixed to the lower side of the support plate 24. The shell 22 is clamped to the inner side of the upper port of the box body 13 using the clamping ring 25 at the lower end, and the support plate 24 limits the clamping of the clamping ring 25.

[0046] Reference Figure 8 The lower end of the hopper 3 is fixed with a cover 31 which is sleeved on the upper end of the shell 22. The hopper 3 is installed and fixed on the shell 22 through the cover 31. The lower port size of the cover 31 is the same as the outer size of the shell 22, so that the cover 31 is more tightly and firmly fitted on the shell 22, which can effectively prevent dust from spreading outward.

[0047] The working principle of the boiler fuel pre-treatment device of the embodiment of the present application is as follows: when processing pulverized coal, coal blocks are put into the hopper 3, at which time the crushing mechanism 2 crushes the coal blocks, and the crushed coal blocks fall into the inner side of the crushing mechanism 4 for crushing, while the crushed coal powder is discharged outward from the discharge direction of the discharge mechanism 1 and sent to the burner;

[0048] When the coal is crushed, the crushing motor drives one of the crushing rollers 21 to rotate, and one of the crushing rollers 21 drives the other crushing roller 21 to rotate through the two transmission gears 23, so that the two crushing rollers 21 crush the coal.

[0049] When the crushed coal is crushed, the crushing mechanism 4 collects the crushed coal through the collecting hopper 42, and the crushed coal flows into the crushing chute 421 under the action of its own gravity. At this time, the motor 411 drives the rotating gear 412 through the driving gear 413 to rotate, thereby driving the crushing roller 43 to crush and roll. Finally, the crushed coal powder is discharged downward into the box 13 through the sieve hole 423;

[0050] When the pulverized coal powder is discharged, the suction fan 11 and the blowing box 12 on the left side of the box 13 cooperate to blow air evenly into the box 13 to blow the coal powder to the right. At this time, the blower 14 blows the coal powder out through the blowing pipe 15 and sends it to the burner.

[0051] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A boiler fuel pre-treatment device, comprising a crushing mechanism (2), characterized in that: A hopper (3) is installed at the upper end of the crushing mechanism (2), and a discharge mechanism (1) is provided at the lower end of the crushing mechanism (2). A crushing mechanism (4) fixedly connected to the lower end of the crushing mechanism (2) is provided inside the discharge mechanism (1). The crushing mechanism (4) crushes and screens the crushed fuel, and the discharge mechanism (1) discharges the crushed and screened fuel to the outside. The discharging mechanism (1) comprises a box (13), a suction fan (11) is fixed on the left side of the box (13), and a blower box (12) is provided on the inner side of the box (13) for blowing the air blown by the suction fan (11) evenly to the right, a blower (14) is fixed on the right side of the box (13), and a blower pipe (15) is connected to the right end of the blower (14).

2. A boiler fuel pretreatment device according to claim 1, characterized in that: The blow box (12) is a rectangular box body arranged longitudinally, and the right side of the blow box (12) is provided with evenly arranged air outlets.

3. A boiler fuel pretreatment device according to claim 2, characterized in that: The pulverizing mechanism (4) comprises a collecting hopper (42), a pulverizing roller (43) being provided at the inner bottom of the collecting hopper (42), and a driving member (41) for driving the pulverizing roller (43) to rotate being fixed on the left side of the collecting hopper (42), and evenly distributed sieve holes (423) being provided at the inner bottom of the collecting hopper (42).

4. A boiler fuel pretreatment device according to claim 3, characterized in that: A mounting edge (422) is fixed to the edge of the upper port of the collecting hopper (42), and an arc-shaped crushing groove (421) is provided at the inner bottom of the collecting hopper (42), and the sieve hole (423) is opened on the inner surface of the crushing groove (421).

5. A boiler fuel pretreatment device according to claim 4, characterized in that: Evenly arranged crushing teeth (432) are fixed to the outside of the crushing roller (43), and rotating shafts (431) are fixed to both ends of the crushing roller (43). The lower side of the crushing roller (43) is arranged close to the bottom of the crushing groove (421).

6. A boiler fuel pretreatment device according to claim 5, characterized in that: The driving member (41) comprises a motor (411) fixed to the outside of the collecting hopper (42) and a rotating gear (412) fixed to the rotating shaft (431). A driving gear (413) meshing with the rotating gear (412) is fixed to the output shaft of the motor (411).

7. The boiler fuel pretreatment device according to claim 1, characterized in that: The crushing mechanism (2) comprises a housing (22) with upper and lower openings, two mutually engaged crushing rollers (21) are mounted on the inner side of the housing (22), and the front ends of the central axes of the two crushing rollers (21) pass through the side walls of the housing (22) and are connected via two transmission gears (23), the rear end of the central axis of one of the crushing rollers (21) passes through the side walls of the housing (22) and is fixedly connected to a crushing motor, a support plate (24) is fixed to the edge of the lower port of the housing (22), and a clamping ring (25) is fixed to the lower side of the support plate (24).

8. The boiler fuel pretreatment device according to claim 7, characterized in that: A cover (31) is fixed to the lower end of the hopper (3) and is sleeved on the upper end of the shell (22), and the size of the lower port of the cover (31) is the same as the outer size of the shell (22).

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