Feeding device of biomass steam boiler

Abstract

The utility model relates to the technical field of boiler feeding equipment, and discloses a biomass steam boiler feeding device which comprises a conveying cylinder, a screening chamber is fixedly installed on the conveying cylinder, a feeding port is designed in the screening chamber, and a discharging port is formed in the bottom of the end, away from the screening chamber, of the conveying cylinder. A first filter plate and a second filter plate are arranged in the screening chamber, and a vibration motor capable of enabling the first filter plate and the second filter plate to vibrate is further arranged in the screening chamber; a guide plate is fixedly mounted on the first filter plate; a guide plate is fixedly mounted in the screening chamber; and an outlet and a slag collecting groove are further formed in the screening chamber. When the device is used, fuel particles can be screened before being conveyed, so that larger particles and smaller dust and chippings can be separated from particles with proper sizes, the combustion efficiency is ensured, and the fuel particles can be dried through hot air while being conveyed, so that the fuel particles are dried, and the conveying efficiency is improved. And the subsequent combustion effect of the fuel particles is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler feeding equipment, in particular to a biomass steam boiler feeding device. Background Technique

[0002] A biomass fuel steam boiler is a boiler that uses biomass energy as fuel. A boiler burning biomass fuel has the characteristics of high thermal efficiency, complete combustion, no pollution, low emissions, etc. It produces less sulfur dioxide, nitrogen oxides and soot, saves thermal production costs compared with oil-fired, gas-fired and electric heating boilers, and can be widely used in industries such as food, pharmaceutical, textile, printing and dyeing, plastics, and chemical industries. During the working process of a biomass fuel steam boiler, biomass fuel needs to be transported into the boiler for combustion.

[0003] The existing patent document with the publication number of CN202321729087.7 discloses CN220453701U, including an installation platform, including a hopper. The bottom of the hopper is communicated with a cylinder body. A rotary cylinder is rotatably connected inside the cylinder body. A storage tank is arranged on the rotary cylinder. Scissor adjusting frames are installed on both sides inside the storage tank, and baffles are installed on the scissor adjusting frames.

[0004] However, the above device has the following problems when in use;

[0005] When in use, due to the different sizes of fuel particles, larger particles may not be able to burn completely within the given combustion time, resulting in a decrease in combustion efficiency. These unburned particles may leave more ashes and unburned residues, not only wasting energy, but also increasing the particulate matter content in emissions. Moreover, during the storage and movement of biomass fuel, due to reasons such as weathering, humidity change, and mechanical wear, debris and dregs may be generated. These fine particles are prone to turning into dust during combustion, not only affecting the combustion effect, but also increasing soot emissions. Content of the Utility Model

[0006] The purpose of the utility model is to solve the problems existing in the prior art, and a biomass steam boiler feeding device is proposed. When the device is in use, it can screen fuel particles before transportation, so that larger particles and smaller dust and debris can be separated from appropriately sized particles, ensuring combustion efficiency, and can dry the fuel particles through hot air while transporting, ensuring the subsequent combustion effect of the fuel particles.

[0007] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A biomass steam boiler feeding device comprises a conveying cylinder, a driving motor is arranged on the conveying cylinder, a rotating shaft is fixedly mounted on the output end of the shaft of the driving motor, and a spiral blade is fixedly mounted on the rotating shaft;

[0009] A screening chamber is fixedly installed on the conveying cylinder, a feed inlet is designed on the screening chamber, and a discharge port is arranged at the bottom of the conveying cylinder away from the screening chamber;

[0010] A first filter plate and a second filter plate are arranged inside the screening chamber, and a vibration motor is also arranged inside the screening chamber to vibrate the first filter plate and the second filter plate;

[0011] A guide plate is fixedly mounted on the first filter plate;

[0012] A guide plate is fixedly installed inside the screening chamber;

[0013] An outlet and a slag collecting trough are also provided inside the screening chamber.

[0014] Preferably, the first filter plate and the second filter plate are both installed at an angle.

[0015] Preferably, the slag collecting tank is located directly below the second filter plate, and a slag collecting drawer is movably installed inside the slag collecting tank, and a handle is fixedly installed on the slag collecting drawer.

[0016] Preferably, the guide plate is located on a lower side of the first filter plate, and the outlet is located on a lower side of the second filter plate.

[0017] Preferably, a lower slag plate is fixedly mounted on the screening chamber, the lower slag plate has the same slope as the guide plate, and the two are connected.

[0018] Preferably, a fixed block is fixedly installed on the center of the conveying cylinder away from the driving motor, the rotating shaft is rotatably installed on the fixed block, and a connecting block is fixedly installed on the part of the fixed block exposed from the conveying cylinder, and an air pipe is embedded in the connecting block.

[0019] Preferably, the rotating shaft is hollow in design, and air outlet holes are fixedly installed on the rotating shaft at equal intervals and evenly.

[0020] Preferably, sealing plug plates are slidably mounted inside the feed port and the discharge port, and handles are fixedly mounted on the two sealing plug plates.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] (1) The utility model is provided with a feed port, a slag lowering plate, a slag collecting drawer, a first filter plate, a second filter plate, a vibration motor, a guide plate, a guide plate, an outlet and a slag collecting tank, which can screen the fuel particles before transportation, and can separate larger particles and smaller dust and debris from particles of appropriate size, thereby reducing the subsequent emission of smoke and dust and ensuring combustion efficiency

[0023] (2) The utility model is provided with a conveying cylinder, an air pipe, a rotating shaft, a spiral blade and air outlets. The air pipe can increase the temperature of the rotating shaft and the spiral blade that are in direct contact with the particles, so that heat exchange can be carried out with the particles for drying. And the gas can escape through the air outlets, increasing the temperature inside the conveying cylinder. By controlling the rotation direction of the rotating shaft, the particles can move back and forth inside, ensuring the drying effect by increasing the contact time, making the combustion effect of the particles in the best state and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic diagram of a biomass steam boiler feeding device proposed by the utility model;

[0025] Figure 2 is a schematic side view of the conveying cylinder of a biomass steam boiler feeding device proposed by the utility model;

[0026] Figure 3 is a schematic diagram of the internal structure of the screening chamber of a biomass steam boiler feeding device proposed by the utility model;

[0027] Figure 4 is a schematic diagram of the internal structure of the conveying cylinder of a biomass steam boiler feeding device proposed by the utility model.

[0028] In the figure: 1, conveying cylinder; 2, screening chamber; 3, feed inlet; 4, driving motor; 5, slag discharging plate; 6, slag collection drawer; 7, handle; 8, discharge outlet; 9, sealing plug; 10, air pipe; 11, fixing block; 12, connecting block; 13, first filter plate; 14, second filter plate; 15, vibration motor; 16, guide plate; 17, guiding plate; 18, outlet; 19, slag collection tank; 20, rotating shaft; 21, spiral blade; 22, air outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to 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 of the embodiments.

[0030] Please refer to Figures 1 to 4 , a biomass steam boiler feeding device, including a conveying cylinder 1, a driving motor 4 is arranged on the conveying cylinder 1, a rotating shaft 20 is fixedly installed on the shaft output end of the driving motor 4, a spiral blade 21 is fixedly installed on the rotating shaft 20. When the driving motor 4 is started, the rotating shaft 20 can be rotated to drive the spiral blade 21 to change the angle, and the spiral blade 21 can drive the material to move forward, thus completing the feeding activity. Since this part is prior art, it will not be elaborated here.

[0031] A screening chamber 2 is fixedly mounted on the conveying cylinder 1, and a feed port 3 is designed on the screening chamber 2. A discharge port 8 is arranged at the bottom of the conveying cylinder 1 away from the screening chamber 2. By feeding the material into the feed port 3, the material is separated into larger particles and smaller debris inside the screening chamber 2, so that only particles of a specified size can fall into the conveying cylinder 1, and then fall into the combustion chamber through the discharge port 8 under the action of the spiral blades 21, thereby ensuring the combustion efficiency;

[0032] The first filter plate 13 and the second filter plate 14 are arranged inside the screening chamber 2, and a vibration motor 15 is also arranged inside the screening chamber 2 to make the first filter plate 13 and the second filter plate 14 vibrate;

[0033] The first filter plate 13 is used to separate larger particles, and smaller particles fall directly onto the second filter plate 14. The second filter plate 14 is used to separate small debris, so that particles that meet the requirements remain on the surface of the second filter plate 14, and debris and dust fall through the gaps on the second filter plate 14, thereby achieving the screening of particles that meet the requirements and facilitating the subsequent combustion process.

[0034] The vibration of the vibration motor 15 can move the particles on the first filter plate 13 and the second filter plate 14 to the lower part, thereby facilitating the collection of unqualified materials.

[0035] A guide plate 16 is fixedly mounted on the first filter plate 13. The guide plate 16 can guide the particles after preliminary screening so that they are concentrated at the higher end of the second filter plate 14, thereby ensuring that the movement path of the particles is long enough to fully separate the debris.

[0036] A guide plate 17 is fixedly installed inside the screening chamber 2. Larger particles fall through the lower end of the first filter plate 13 and then directly fall onto the guide plate 17 and roll on the guide plate 17.

[0037] An outlet 18 and a slag collecting trough 19 are also provided inside the screening chamber 2. Debris and dust fall through the gaps on the second filter plate 14 and then directly fall into the slag collecting trough 19, which is convenient for collection. Particles that meet the requirements fall directly through the outlet 18 and move to the inside of the conveying cylinder 1 for conveying.

[0038] The first filter plate 13 and the second filter plate 14 are both installed at an angle, and the materials will move to a lower position under the action of gravity, thereby facilitating screening activities.

[0039] The slag collecting tank 19 is located directly below the second filter plate 14 , and a slag collecting drawer 6 is movably installed inside the slag collecting tank 19 , and a handle 7 is fixedly installed on the slag collecting drawer 6 .

[0040] The debris and dust fall through the gaps on the second filter plate 14 and then directly fall into the slag collecting drawer 6 inside the slag collecting tank 19. The slag collecting drawer 6 can be pulled out by the handle 7 for cleaning, thereby facilitating continuous recycling.

[0041] The guide plate 17 is located on the lower side of the first filter plate 13, and the outlet 18 is located on the lower side of the second filter plate 14. The materials will move to the corresponding positions under the action of gravity, which is convenient for collection and unloading activities.

[0042] A lower slag plate 5 is fixedly installed on the screening chamber 2. The lower slag plate 5 has the same slope as the guide plate 17 and the two are connected. The particles on the guide plate 17 are smoothly discharged through the lower slag plate 5. By placing a corresponding container at the bottom of the lower slag plate 5, larger particles can be collected and then crushed and re-added.

[0043] A fixed block 11 is fixedly installed on the center of the conveying cylinder 1 on the side away from the driving motor 4, and the rotating shaft 20 is rotatably installed on the fixed block 11. A connecting block 12 is fixedly installed on the part of the fixed block 11 exposed from the conveying cylinder 1, and an air pipe 10 is embedded in the connecting block 12. The waste heat of the boiler can be used to fill the interior of the air pipe 10 with high-temperature gas (humidity needs to be controlled), thereby facilitating drying activities.

[0044] The rotating shaft 20 is hollow in design, and air outlet holes 22 are fixedly installed on the rotating shaft 20 at equal intervals.

[0045] The gas inside the air pipe 10 can be smoothly transported to the inside of the rotating shaft 20, so that the temperature of the rotating shaft 20 and the spiral blades 21 that are in direct contact with the particles becomes higher, so that they can exchange heat with the particles and perform drying activities. The gas can escape through the air outlet 22, thereby increasing the temperature inside the conveying cylinder 1, thereby ensuring the drying effect and making the combustion effect of the particles in the best state.

[0046] Sealing plug plates 9 are slidably installed inside the feed port 3 and the discharge port 8, and handles 7 are fixedly installed on the two sealing plug plates 9. By moving the sealing plug plates 9, the opening of the channel can be controlled, and the loading and unloading of materials can be controlled while ensuring the internal sealing.

[0047] The working process of the present utility model is as follows: First, the materials are put into the feeding port 3. The particles first fall onto the first filter plate 13. The larger particles that do not meet the requirements stay on the surface of the first filter plate 13, and the smaller particles directly fall onto the second filter plate 14, so that the particles that meet the requirements stay on the surface of the second filter plate 14. The debris and dust fall through the gaps on the second filter plate 14. The vibration of the vibration motor 15 can make the particles on the first filter plate 13 and the second filter plate 14 move towards the lower part. The particles that meet the requirements directly fall through the outlet 18 and move into the conveying cylinder 1 for conveying activities.

[0048] The debris and dust fall through the gaps on the second filter plate 14 and then directly fall into the slag collection drawer 6 inside the slag collection tank 19. The slag collection drawer 6 can be pulled out through the handle 7 for cleaning, so as to facilitate continuous recycling.

[0049] The larger particles will move onto the guiding plate 17 and then be smoothly discharged through the slag discharging plate 5. By placing a corresponding container at the bottom of the slag discharging plate 5, the collection of larger particles can be carried out. After the larger particles are pulverized later, they can be put back in.

[0050] When the humidity of the materials is relatively high due to reasons such as storage, after the feeding activity is completed, only need to move the sealing inserts 9 inside the feeding port 3 and the discharging port 8 to stop the feeding activity. Then, utilize the waste heat of the boiler to fill the air pipe 10 with high-temperature gas. The gas inside the air pipe 10 can be smoothly conveyed into the rotating shaft 20, so that the temperature of the rotating shaft 20 and the spiral blades 21 that are in direct contact with the particles becomes higher, thereby enabling heat exchange with the particles for drying activities. And the gas can escape through the air holes 22, further increasing the temperature inside the conveying cylinder 1. By controlling the rotation direction of the rotating shaft 20, the particles can move back and forth inside, and by increasing the contact time, the drying effect can be ensured, so that the combustion effect of the particles is in the best state.

[0051] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A biomass steam boiler feeding device, comprising a conveying cylinder (1), a driving motor (4) is arranged on the conveying cylinder (1), a rotating shaft (20) is fixedly installed on the shaft output end of the driving motor (4), and a spiral blade (21) is fixedly installed on the rotating shaft (20), characterized in that, A screening chamber (2) is fixedly mounted on the conveying cylinder (1), a feed port (3) is designed on the screening chamber (2), and a discharge port (8) is arranged at the bottom of the end of the conveying cylinder (1) away from the screening chamber (2); A first filter plate (13) and a second filter plate (14) are arranged inside the screening chamber (2), and a vibration motor (15) is also arranged inside the screening chamber (2) for vibrating the first filter plate (13) and the second filter plate (14); A guide plate (16) is fixedly mounted on the first filter plate (13); A guide plate (17) is fixedly installed inside the screening chamber (2); An outlet (18) and a slag collecting trough (19) are also provided inside the screening chamber (2).

2. The feeding device of a biomass steam boiler according to claim 1, characterized in that, The first filter plate (13) and the second filter plate (14) are both installed at an incline.

3. The feeding device of a biomass steam boiler according to claim 1, characterized in that, The slag collecting trough (19) is located directly below the second filter plate (14), and a slag collecting drawer (6) is movably installed inside the slag collecting trough (19), and a handle (7) is fixedly installed on the slag collecting drawer (6).

4. The feeding device of a biomass steam boiler according to claim 1, characterized in that, The guide plate (17) is located on the lower side of the first filter plate (13), and the outlet (18) is located on the lower side of the second filter plate (14).

5. The feeding device of a biomass steam boiler according to claim 1, wherein, A lower slag plate (5) is fixedly mounted on the screening chamber (2); the lower slag plate (5) and the guide plate (17) have the same slope, and the two are connected.

6. The feeding device of a biomass steam boiler according to claim 1, characterized in that A fixed block (11) is fixedly mounted on the center of a circle of the conveying cylinder (1) away from the driving motor (4); a rotating shaft (20) is rotatably mounted on the fixed block (11); a connecting block (12) is fixedly mounted on a portion of the fixed block (11) exposed from the conveying cylinder (1); and an air pipe (10) is embedded and mounted on the connecting block (12).

7. A biomass steam boiler feeding device according to claim 1, characterized in that, The rotating shaft (20) is of hollow design, and air outlet holes (22) are fixedly mounted on the rotating shaft (20) at equal intervals and evenly.

8. The feeding device of a biomass steam boiler according to claim 1, characterized in that, Sealing plug plates (9) are slidably mounted inside the feed port (3) and the discharge port (8), and handles (7) are fixedly mounted on the two sealing plug plates (9).

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