Feeding device of biomass direct combustion furnace

Abstract

The utility model discloses a biomass direct combustion furnace feeding device which comprises a charging barrel and a stirring feeding mechanism, the charging barrel comprises a stirring cavity and a discharging pipe located below the stirring cavity, and the stirring feeding mechanism comprises a first driver, a stirring rod and a spiral feeding roller which are fixed to the upper portion of the charging barrel. The first driver can drive the stirring rod and the spiral feeding roller to rotate, the stirring rod is located in the stirring cavity, and the spiral feeding roller is located in the discharging pipe. The stirring rod and the spiral feeding roller are driven to rotate through the first driver, biomass fuel entering the charging barrel can be scattered and then fed spirally, the risk of bridging or blocking of the discharging pipe is greatly reduced, and the feeding effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of feeding device technology, and more specifically, to a feeding device for a biomass direct-fired furnace. Background Technology

[0002] Currently, the feeding of biomass direct-fired boilers involves crushing and drying the biomass raw materials before conveying them to a feeding device. This device then centrally transports the biomass raw materials to the boiler for combustion. However, due to the significant differences in particle size after crushing, small particles fill the gaps between larger particles, resulting in poor flowability. When passing through narrow feed pipe openings, fuel bridging can easily occur within the feed cylinder, causing blockages and affecting the supply of biomass fuel. Therefore, improvements are urgently needed. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a biomass direct combustion furnace feeding device. By driving the stirring rod and the spiral feeding roller to rotate through the first driver, the biomass fuel entering the cylinder can be dispersed and then fed through the spiral, which greatly reduces the risk of bridging or blockage of the feed pipe and improves the feeding effect.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a biomass direct-fired furnace feeding device, comprising a material cylinder and a stirring and feeding mechanism, wherein the material cylinder includes a stirring chamber and a feeding pipe located below the stirring chamber, and the stirring and feeding mechanism includes a first driver fixed above the material cylinder, a stirring rod and a spiral feeding roller, wherein the first driver can drive the stirring rod and the spiral feeding roller to rotate, the stirring rod is located in the stirring chamber, and the spiral feeding roller is located inside the feeding pipe.

[0005] Furthermore, the upper part of the material cylinder is covered with a cover plate, and the upper part of the cover plate is provided with a feed inlet, which is connected to the mixing chamber.

[0006] Furthermore, the outer wall of the material cylinder is provided with a support plate, and a lifting device is provided on the upper part of the support plate. The telescopic rod of the lifting device is connected to the cover plate.

[0007] Furthermore, a support frame is provided at the lower part of the support plate.

[0008] Furthermore, the lower end of the spiral feeding roller is connected to the inner wall of the feeding pipe by multiple spaced first connecting ribs.

[0009] Furthermore, the stirring rod is coaxially arranged with the spiral feeding roller, and the lower end of the stirring rod is connected to the upper end of the spiral feeding roller through a planetary gear box.

[0010] Furthermore, the rotational speed of the spiral feeding roller is less than that of the stirring rod, and the planetary gearbox is connected to the inner wall of the stirring chamber by multiple spaced second connecting ribs.

[0011] Furthermore, the lower part of the feeding pipe is provided with a horizontally arranged feeding cylinder, the lower part of the feeding cylinder is provided with a discharge port, and the inside of the feeding cylinder is provided with a rotating feeding paddle.

[0012] Furthermore, a second driver is provided outside the feeding cylinder. The second driver is connected to the feeding paddle. The feeding paddle includes multiple feeding troughs. Adjacent feeding troughs are separated by a baffle block. The feeding paddle is rotated so that the feeding troughs face the discharge port or the baffle block blocks the discharge port.

[0013] Furthermore, an air inlet pipe is provided on the side of the feeding pipe, and the air inlet pipe is connected to the inside of the feeding pipe.

[0014] In summary, this utility model has the following beneficial effects:

[0015] During operation, the crushed and dried biomass fuel enters the mixing chamber through the feeding pipe. The first driver drives the stirring rod to rotate, and the stirring blades on the stirring rod disperse the biomass fuel, allowing it to smoothly enter the feeding pipe and preventing it from accumulating in the mixing chamber. The dispersed biomass fuel falls into the smaller feeding pipe. As the stirring rod rotates, it drives the spiral feeding roller to rotate, which transfers the fuel in the feeding pipe to the feeding cylinder, and then discharges it through the outlet. By setting the spiral feeding roller, the biomass fuel is prevented from clogging the feeding pipe. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0017] Figure 2 This is a cross-sectional view of this embodiment;

[0018] Figure 3 for Figure 2 A partial schematic diagram.

[0019] Reference numerals: 1. Material cylinder; 11. Mixing chamber; 12. Feeding pipe; 13. Feeding cylinder; 14. Support plate; 15. Support frame; 16. Air inlet pipe; 17. Discharge port; 18. First connecting rib; 2. Cover plate; 21. Feeding port; 3. Mixing and feeding mechanism; 31. First driver; 32. Mixing rod; 33. Planetary gearbox; 34. Spiral feeding roller; 35. Second connecting rib; 4. Feeding paddle; 41. Feeding trough; 42. Material stop block; 43. Second driver; 5. Lifter. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1 to 3 As shown, this embodiment discloses a biomass direct-fired furnace feeding device, including a material cylinder 1 and a stirring and feeding mechanism 3. The material cylinder 1 includes a stirring chamber 11, a discharge pipe 12 located below the stirring chamber 11, and a feeding cylinder 13 horizontally arranged below the discharge pipe 12. The feeding cylinder 13 has a discharge port 17 at its lower part. The material cylinder 1 is covered with a cover plate 2, and the cover plate 2 has a feed inlet 21 at its upper part. The feed inlet 21 communicates with the stirring chamber 11. The stirring and feeding mechanism 3 includes a first driver 31 fixed above the material cylinder 1, a stirring rod 32, and a spiral feeding roller 34. The first driver 31 can drive the stirring rod 32 and the spiral feeding roller 34 to rotate. The stirring rod 32 is located in the stirring chamber 11, and the spiral feeding roller 34 is located inside the discharge pipe 12. The first driver 31 is a conventional motor.

[0022] During operation, the crushed and dried biomass fuel enters the mixing chamber 11 through the feed pipe 12. The first driver 31 drives the stirring rod 32 to rotate, and the stirring blades on the stirring rod 32 disperse the biomass fuel, so that the biomass fuel can smoothly enter the feed pipe 12 and avoid the biomass fuel accumulating in the mixing chamber 11. The dispersed biomass fuel falls into the smaller feed pipe 12. During the rotation of the stirring rod 32, the spiral feeding roller 34 is driven to rotate. The spiral feeding roller 34 can transfer the fuel in the feed pipe 12 to the feeding cylinder 13, and then discharge it through the discharge port 17. By setting the spiral feeding roller 34, the biomass fuel is prevented from blocking the feed pipe 12.

[0023] The stirring rod 32 and the spiral feeding roller 34 are coaxially arranged. The lower end of the stirring rod 32 and the upper end of the spiral feeding roller 34 are connected through a planetary gear box 33. The stirring rod 32 and the spiral feeding roller 34 are driven by planetary gears so that the rotational speed of the spiral feeding roller 34 is less than the rotational speed of the stirring rod 32. The planetary gear box 33 is existing technology, so the connection method between the stirring rod 32 and the spiral feeding roller 34 will not be described in detail in this specification. Through planetary gear transmission, the rotational speeds of the stirring rod 32 and the spiral feeding roller 34 are different. Thus, through a first driver 31, both the rapid rotation of the stirring rod 32 and the slow feeding of the spiral feeding roller 34 can be satisfied.

[0024] The lower end of the spiral feeding roller 34 is connected to the inner wall of the feeding pipe 12 by multiple spaced first connecting ribs 18. The lower end of the spiral feeding roller 34 is connected to the first connecting ribs 18 by bearings (not shown in the figure). The planetary gear box 33 is connected to the inner wall of the mixing chamber 11 by multiple spaced second connecting ribs 35. Through the above design, the connection between the mixing and feeding mechanism 3 and the material cylinder 1 can be realized, and biomass fuel can be fed from the gaps between adjacent first connecting ribs 18 and between adjacent second connecting ribs 35.

[0025] The feeding cylinder 13 is equipped with a rotatable feeding paddle 4 inside. Specifically, a second driver 43 is provided outside the feeding cylinder 13. The second driver 43 is connected to the feeding paddle 4 and is a geared motor. The feeding paddle 4 includes multiple feeding troughs 41. Adjacent feeding troughs 41 are separated by a baffle block 42. The feeding paddle 4 is rotated so that the feeding trough 41 is facing the discharge port 17 or the baffle block 42 blocks the discharge port 17. When the feeding trough 41 is located below the discharge pipe 12, the fuel in the discharge pipe 12 can enter the feeding trough 41. By using the second driver 43, the feeding trough 41 containing fuel is rotated above the discharge port 17, and the fuel can be discharged from the discharge port 17. By setting the feeding paddle 4, intermittent fuel discharge can be achieved, thereby avoiding fuel accumulation at the discharge port 17 and greatly improving the fuel supply effect.

[0026] The feeding pipe 12 is provided with an air inlet pipe 16 on its side. The air inlet pipe 16 is connected to the inside of the feeding pipe 12 and is connected to an external air source. When the fuel in the feeding pipe 12 is not transported smoothly, the external air source passes high-pressure gas into the feeding pipe 12 through the air inlet pipe 16, which can disperse the fuel in the feeding pipe 12, facilitate the transport of fuel in the feeding pipe 12, and prevent the feeding pipe 12 from becoming blocked.

[0027] The outer wall of the material cylinder 1 is provided with a support plate 14, and a lifting device 5 is provided on the upper part of the support plate 14. The telescopic rod of the lifting device 5 is connected to the cover plate 2. The lifting device 5 is located on both sides of the material cylinder 1. By setting the lifting device 5, the cover plate 2 can be lifted and lowered, thereby facilitating the cleaning of the mixing chamber 11.

[0028] A support frame 15 is provided at the lower part of the support plate 14, which can support the material cylinder 1.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A biomass direct combustion furnace feed device, characterized by, The device includes a material cylinder (1) and a mixing and feeding mechanism (3). The material cylinder (1) includes a mixing chamber (11) and a feeding pipe (12) located below the mixing chamber (11). The mixing and feeding mechanism (3) includes a first driver (31) fixed above the material cylinder (1), a mixing rod (32) and a spiral feeding roller (34). The first driver (31) can drive the mixing rod (32) and the spiral feeding roller (34) to rotate. The mixing rod (32) is located in the mixing chamber (11), and the spiral feeding roller (34) is located inside the feeding pipe (12).

2. A biomass direct combustion furnace feeding device according to claim 1, characterized in that, The upper part of the material cylinder (1) is covered by a cover plate (2), and the upper part of the cover plate (2) is provided with a feed inlet (21), which is connected to the stirring chamber (11).

3. A biomass direct combustion furnace feeding device according to claim 2, characterized in that, The outer wall of the material cylinder (1) is provided with a support plate (14), and the upper part of the support plate (14) is provided with a lifter (5), and the telescopic rod of the lifter (5) is connected to the cover plate (2).

4. A biomass direct combustion furnace feeding device according to claim 3, characterized in that, The support plate (14) is provided with a support frame (15) at its lower part.

5. A biomass direct combustion furnace feeding device according to claim 1, characterized in that, The lower end of the spiral feed roller (34) is connected to the inner wall of the feed pipe (12) by a number of spaced first connecting ribs (18).

6. A biomass direct combustion furnace feeding device according to claim 1, characterized in that, The stirring rod (32) is coaxially arranged with the spiral feeding roller (34), and the lower end of the stirring rod (32) is connected to the upper end of the spiral feeding roller (34) through a planetary gearbox (33).

7. A biomass direct combustion furnace feeding device according to claim 6, characterized in that, The rotational speed of the spiral feeding roller (34) is less than that of the stirring rod (32), and the planetary gearbox (33) is connected to the inner wall of the stirring chamber (11) by multiple spaced second connecting ribs (35).

8. A biomass direct fired furnace feed apparatus according to claim 1, wherein, The lower part of the feeding pipe (12) is provided with a horizontally arranged feeding cylinder (13), the lower part of the feeding cylinder (13) is provided with a discharge port (17), and the inside of the feeding cylinder (13) is provided with a rotating feeding paddle (4).

9. A biomass direct combustion furnace feeding device according to claim 8, characterized in that, The feed cylinder (13) is provided with a second driver (43) on the outside. The second driver (43) is connected to the feed paddle (4). The feed paddle (4) includes a plurality of feed troughs (41). Two adjacent feed troughs (41) are separated by a baffle block (42). The feed paddle (4) is rotated so that the feed trough (41) faces the discharge port (17) or the baffle block (42) blocks the discharge port (17).

10. A biomass direct combustion furnace feeding device according to claim 1, characterized in that, The feed pipe (12) is provided with an air inlet pipe (16) on its side, and the air inlet pipe (16) is connected to the inside of the feed pipe (12).

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