A feeder for a biomass pellet combustion machine

Abstract

The application relates to a feeder for a biomass pellet combustion machine and relates to the technical field of biomass pellet combustion equipment. In order to solve the problem that fuel is prone to adhering to a shell, the feeder comprises a rack, a feeding hopper and a conveying mechanism arranged on the rack, the conveying mechanism comprises a shell, a first screw rod, a second screw rod and a driving piece for driving the screw rods, the feeding hopper is communicated with a feeding end of the shell, the first screw rod and the second screw rod are arranged in parallel, the first screw rod and the second screw rod are rotationally connected in the shell, air injection pipes are arranged on the two sides of the shell, the air injection pipes are arranged along the length direction of the shell, a plurality of nozzles are arranged on each air injection pipe, the plurality of nozzles extend into the shell, and a spout is communicated with a discharging end of the shell. The feeder has the effect of preventing fuel from adhering by using the air injection pipes and the plurality of nozzles to spray gas, avoiding the formation of irregular material plugs due to the thickening of the adhering layer, and improving the production efficiency.

Description

Technical Field

[0001] This application relates to the field of biomass pellet combustion equipment technology, and in particular to a feeder for a biomass pellet burner. Background Technology

[0002] Biomass pellet burners, as core equipment for renewable energy utilization, have become a key support for green transformation in the industrial sector, and are widely used in industrial heating, boiler retrofitting, drying equipment, and coating lines. Their core advantage lies in replacing traditional fossil fuels with biomass fuels such as wood pellets and straw pellets, achieving efficient and clean heating through high-temperature pyrolysis combustion technology. Compared with coal and oil-fired equipment, biomass burners can significantly reduce emissions of sulfur oxides, nitrogen oxides, and dust during combustion, and the fuel sources are wide-ranging, including agricultural waste, forestry processing residues, and energy crops, which not only solves the problem of agricultural and forestry waste disposal but also alleviates the problem of dependence on fossil fuels.

[0003] In related technologies, biomass fuels generally have characteristics such as large fluctuations in moisture content and high fiber content. Under high temperature and high humidity environments, the fuel easily absorbs moisture and becomes sticky. As a result, during the feeding process, some fine particles or semi-molten substances adhere to areas such as the spiral blades and the inner wall of the shell. As the operating time increases, the adhesive layer gradually thickens, forming irregular material blockages. This forces the machine to be stopped frequently for cleaning, resulting in a decrease in production efficiency. Therefore, this issue needs to be improved. Utility Model Content

[0004] To address the problem of fuel easily adhering to the inside of the casing, this application provides a feeder for a biomass pellet burner.

[0005] The feeder for a biomass pellet burner provided in this application adopts the following technical solution: A feeder for a biomass pellet burner includes a frame, on which a feeding hopper and a conveying mechanism are mounted. The conveying mechanism includes a housing, a first screw rod, a second screw rod, and a drive component for driving the screw rods. The feeding hopper is connected to the feed end of the housing. The first and second screw rods are arranged in parallel and are rotatably connected inside the housing. Air jet pipes are provided on both sides of the housing and are arranged along the length of the housing. Each air jet pipe is provided with multiple nozzles, and the multiple nozzles extend into the housing. The discharge end of the housing is connected to a chute.

[0006] Because biomass fuels generally have large fluctuations in moisture content and high fiber content, they easily absorb moisture and become sticky in high-temperature and high-humidity environments. This causes some fine particles or semi-molten substances to adhere to the spiral blades, the inner wall of the shell, and other areas during the feeding process. As the operating time increases, the adhesive layer gradually thickens, forming irregular material blockages, forcing frequent shutdowns for cleaning, which leads to a decrease in production efficiency. By adopting the above-mentioned technical solution, including a frame, a feeding hopper, and a conveying mechanism installed on the frame, the conveying mechanism includes a shell, a first spiral rod, a second spiral rod, and a drive component. Two jet pipes are installed on both sides of the shell, with nozzles on the jet pipes extending into the shell. A chute is installed at the discharge end of the shell. When transporting fuel, biomass fuel is fed into the hopper from either the large or small inlet at the top, depending on actual needs. The fuel then enters the feed end of the shell, which is connected to the feed hopper. The drive unit is activated, and the motor starts running. Its output end drives the first screw to rotate. The driving gear and driven gear mesh, and the rotation of the first screw drives the second screw to rotate synchronously. During the fuel transport process, the jet pipes on both sides of the shell start working, and the nozzles spray gas into the shell, which plays a certain role in blowing and loosening the fuel during the transport process. This prevents the biomass fuel from easily absorbing moisture and becoming sticky due to its large fluctuation in moisture content and high fiber content in high temperature and high humidity environments. This prevents the fuel from adhering to the screw blades, the inner wall of the shell, and other areas to form a blockage. The transported fuel finally reaches the discharge end of the shell and is discharged through the chute. By incorporating a feeding hopper, conveying mechanism, chute, jet pipe, and nozzles, the problem of biomass fuel transportation is effectively solved. The first and second screws can achieve efficient fuel transportation under the action of the driving component. The jet pipe and multiple nozzles prevent fuel adhesion by spraying gas, avoiding the need for regular and frequent shutdowns for cleaning due to the formation of irregular material blockages caused by the thickening of the adhesive layer. This improves production efficiency and ensures the stability of fuel transportation.

[0007] Optionally, both the first and second screws are arranged from the feed end of the housing toward the discharge end, and the first and second screws are parallel and do not intersect.

[0008] By adopting the above technical solution, both the first and second screws are arranged from the feed end of the shell towards the discharge end. The first and second screws are parallel and do not intersect. Through the arrangement of the first and second screws, the parallel arrangement of the two screws effectively increases the uniformity of the material, ensuring that the fuel can move stably from the feed end to the discharge end, avoiding poor material conveying in the area. At the same time, the fact that the two screws do not intersect avoids mutual interference and collision that may occur during the operation of the screws, thus extending the service life of the equipment.

[0009] Optionally, the pitch of both the first and second screws increases in a stepwise manner in the direction of material conveying.

[0010] By adopting the above technical solution, the pitch of both the first and second screws increases in a stepwise manner in the direction of material conveying. Through the arrangement of the first and second screw structures, the smaller pitch in the initial stage of material conveying can gather the incoming biomass fuel. As the material moves towards the discharge end, the pitch gradually increases, which enhances the screw's ability to push the material and improves the conveying efficiency.

[0011] Optionally, the driving component includes a motor, a driving gear, and a driven gear. The driving gear and the driven gear are respectively sleeved on the first helical rod and the second helical rod, and the driving gear and the driven gear mesh with each other. The output end of the motor is connected to the end of the first helical rod.

[0012] By adopting the above technical solution, the driving component includes a motor, a driving gear, and a driven gear. Through the setting of the driving component, the gear meshing transmission method has high transmission efficiency, which can ensure that the two screw rods deliver biomass fuel at a stable speed and torque, avoiding problems such as uneven material delivery and jamming caused by unstable power transmission, and improving the stability of the feeder in conveying materials.

[0013] Optionally, the top of the feeding hopper is provided with a large feed inlet and a small feed inlet.

[0014] By adopting the above technical solution, the top of the feeding hopper is provided with a large feed port and a small feed port. The large feed port can meet the needs of large-scale and rapid feeding, and the feeding operation can be completed through the large feed port, which improves the feeding efficiency. The small feed port provides convenience for small-scale feeding. The large and small feed ports work together to flexibly adapt to feeding scenarios of different scales and requirements, thereby enhancing the applicability of the feeder.

[0015] Optionally, the plurality of nozzles are evenly distributed on the jet pipe, and the jet direction of the nozzles is tilted towards the bottom of the housing.

[0016] By adopting the above technical solution, multiple nozzles are evenly distributed on the jet pipe, and the nozzle spray direction is tilted towards the bottom of the shell. By setting the nozzle distribution and installation angle, the evenly distributed nozzles can ensure the gas spray range and avoid the problem of excessive or insufficient local airflow. At the same time, the nozzle spray direction can effectively address the problem that biomass fuel is prone to adhering to the bottom of the shell and the spiral blades during the transportation process. It can blow up any small particles that may adhere and bring them back into the transportation process in time, preventing them from gradually accumulating and forming material blockages.

[0017] Optionally, the chute is vertically disposed at the discharge end of the shell, and a flange assembly is provided between the chute and the discharge end of the shell.

[0018] By adopting the above technical solution, the chute is vertically installed at the discharge end of the shell, and a flange assembly is installed between the chute and the discharge end of the shell. Through the arrangement of the chute and the setting of the flange assembly, the vertically installed chute enables the biomass fuel to flow smoothly downward under the action of gravity, ensuring the continuity of fuel transportation. At the same time, the flange assembly enhances the stability of the connection between the chute and the discharge end of the shell, ensuring the safe operation of the equipment.

[0019] Optionally, an observation port is provided on the wall of the chute, and an observation plate for sealing is provided at the observation port.

[0020] By adopting the above technical solution, the observation port is opened on the pipe wall of the chute, and the observation plate seals the observation port. With the setting of the observation plate and the observation port, the observation port can directly observe the transportation status of biomass fuel in the chute. The matching observation plate can reliably seal the observation port when observation is not required, effectively preventing fuel from leaking out of the observation port during transportation and avoiding fuel waste.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a feeding hopper, conveying mechanism, chute, jet pipe and nozzle, the problem of biomass fuel transportation is effectively solved. The first screw and the second screw can achieve efficient fuel transportation under the action of the driving component. The jet pipe and multiple nozzles prevent fuel adhesion by spraying gas, avoiding the need for regular and frequent shutdowns for cleaning due to the formation of irregular material blockages caused by the thickening of the adhesion layer, thus improving production efficiency and ensuring the stability of fuel transportation. 2. By setting the arrangement of the first and second screws, the parallel arrangement of the two screws effectively increases the uniformity of the material, ensuring that the fuel can move stably from the feed end to the discharge end, avoiding poor material conveying in the area. At the same time, the two screws do not intersect, avoiding mutual interference and collision that may occur during the operation of the screws, thus extending the service life of the equipment. 3. With the installation of observation plates and observation ports, the observation ports can directly observe the conveying status of biomass fuel in the chute. The matching observation plates can reliably seal the observation ports when observation is not required, effectively preventing fuel from leaking out of the observation ports during the conveying process and avoiding fuel waste. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a feeder for a biomass pellet burner in an embodiment of this application.

[0023] Figure 2 This is a top view of a feeder for a biomass pellet burner in an embodiment of this application.

[0024] Figure 3 This is a cross-sectional view of a feeder for a biomass pellet burner in an embodiment of this application.

[0025] Figure 4 This is a front view of a feeder for a biomass pellet burner in an embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Feed hopper; 21. Large feed inlet; 22. Small feed inlet; 3. Conveying mechanism; 31. Housing; 32. First screw rod; 33. Second screw rod; 34. Drive component; 341. Motor; 342. Drive gear; 343. Driven gear; 4. Jet pipe; 41. Nozzle; 5. Chute; 51. Observation port; 6. Flange assembly; 7. Observation plate. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0028] This application discloses a feeder for a biomass pellet burner. (Refer to...) Figure 1 and Figure 2 The feeder for the biomass pellet burner includes a frame 1, on which a feed hopper 2 and a conveying mechanism 3 are mounted; the conveying mechanism 3 includes a housing 31, a first screw rod 32, a second screw rod 33 and a drive member 34, which drives the first screw rod 32 and the second screw rod 33 to rotate.

[0029] Reference Figure 1 The housing 31 is mounted on the frame 1. The two ends of the housing 31 along its length are the feeding end and the discharging end, respectively. The feeding hopper 2 is mounted on the top of the housing 31 and is connected to the feeding end of the housing 31. In this embodiment, the feeding hopper 2 is equipped with corresponding weighing components. The top of the feeding hopper 2 is provided with a large feeding port 21 and a small feeding port 22. The large feeding port 21 can meet the needs of large-scale and rapid feeding. The feeding operation can be completed through the large feeding port 21, which improves the feeding efficiency. The small feeding port 22 provides convenience for small-scale feeding. The large feeding port 21 and the small feeding port 22 work together to flexibly adapt to feeding scenarios of different scales and requirements, which enhances the applicability of the feeder.

[0030] Reference Figure 1 and Figure 2The first screw 32 and the second screw 33 are both rotatably installed inside the housing 31. The first screw 32 and the second screw 33 are arranged from the feed end of the housing 31 toward the discharge end. The first screw 32 and the second screw 33 are parallel and do not intersect. The two parallel screws effectively increase the uniformity of the material, ensuring that the fuel can move stably from the feed end to the discharge end, avoiding poor material conveying in the area. At the same time, the fact that the two do not intersect avoids mutual interference and collision that may occur during the operation of the screws, thus extending the service life of the equipment.

[0031] Reference Figure 1 and Figure 2 The driving component 34 includes a motor 341, a driving gear 342, and a driven gear 343. The driving gear 342 and the driven gear 343 are respectively sleeved on the first screw rod 32 and the second screw rod 33. The driving gear 342 and the driven gear 343 mesh with each other. The motor 341 is installed outside the housing 31, and the output end of the motor 341 is connected to the end of the first screw rod 32. The gear meshing transmission method has high transmission efficiency, which can ensure that the two screw rods transport biomass fuel at a stable speed and torque, avoid problems such as uneven material transportation and jamming caused by unstable power transmission, and improve the stability of the feeder in transporting materials.

[0032] Reference Figure 1 and Figure 2 In this embodiment, the pitch of the first screw rod 32 and the second screw rod 33 both increase in a stepwise manner in the direction of material conveying. In the early stage of material conveying, the smaller pitch can gather the incoming biomass fuel. As the material moves towards the discharge end, the pitch gradually increases, which enhances the screw rod's ability to push the material and improves the conveying efficiency.

[0033] Reference Figure 3 The discharge end of the shell 31 is connected to a chute 5, which is vertically installed at the discharge end of the shell 31. A flange assembly 6 is installed between the chute 5 and the discharge end of the shell 31. The vertically installed chute 5 allows the biomass fuel to flow smoothly downward under the action of gravity, ensuring the continuity of fuel transportation. At the same time, the flange assembly 6 enhances the stability of the connection between the chute 5 and the discharge end of the shell 31, ensuring the safe operation of the equipment.

[0034] Reference Figure 3 An observation port 51 is provided on the pipe wall of the chute 5, and an observation plate 7 for sealing is installed at the observation port 51. In this embodiment, the observation plate 7 is hinged and can be opened and closed. The observation port 51 can directly observe the conveying status of biomass fuel in the chute 5. When observation is not required, the matching observation plate 7 can reliably seal the observation port 51, effectively preventing fuel from leaking out of the observation port 51 during the conveying process and avoiding fuel waste.

[0035] Reference Figure 4 Both sides of the housing 31 are equipped with jet pipes 4. In this embodiment, the jet pipes 4 are installed on the housing 31 through corresponding support structures. The jet pipes 4 are arranged along the length of the housing 31. Both jet pipes 4 are connected to an external air supply device through hoses. The air supply device supplies air to the jet pipes 4.

[0036] Reference Figure 4 Each jet pipe 4 is connected to multiple nozzles 41, which extend into the housing 31. The nozzles 41 are evenly distributed on the jet pipe 4, and the jet direction of the nozzles 41 is tilted towards the bottom of the housing 31. This effectively solves the problem of biomass fuel transportation. The first screw 32 and the second screw 33 can achieve efficient fuel transportation under the action of the drive component 34. The jet pipe 4 and the multiple nozzles 41 prevent fuel adhesion by spraying gas, avoiding the need for regular and frequent shutdowns for cleaning due to the formation of irregular material blockages caused by the thickening of the adhesive layer. This improves production efficiency and ensures the stability of fuel transportation.

[0037] The implementation principle of a feeder for a biomass pellet burner in this application embodiment is as follows: When conveying fuel, biomass fuel is fed into the feed hopper 2 from the large feed port 21 or the small feed port 22 at the top of the feed hopper 2 according to actual needs. The fuel then enters the feed end of the shell 31 connected to the feed hopper 2. The drive component 34 is started, and the motor 341 starts to run. Its output end drives the first screw rod 32 to rotate. The drive gear 342 and the driven gear 343 mesh. When the first screw rod 32 rotates, it will drive the second screw rod 33 to rotate synchronously. During the fuel conveying process, the jet pipes 4 on both sides of the shell 31 start to work. The nozzles 41 spray gas into the shell 31, which plays a certain role in blowing and loosening the fuel during the conveying process. This prevents the biomass fuel from easily absorbing moisture and becoming sticky in a high temperature and high humidity environment due to large fluctuations in moisture content and high fiber content. This prevents the fuel from adhering to the screw blades, the inner wall of the shell 31, and other areas to form a blockage. The conveyed fuel finally reaches the discharge end of the shell 31 and is discharged through the chute 5. By setting up the feeding hopper 2, conveying mechanism 3, chute 5, jet pipe 4 and nozzle 41, the problem of biomass fuel transportation is effectively solved. The first screw 32 and the second screw 33 can achieve efficient fuel transportation under the action of the driving component 34. The jet pipe 4 and multiple nozzles 41 prevent fuel adhesion by spraying gas, avoiding the need for regular and frequent shutdowns for cleaning due to the formation of irregular material blockages caused by the thickening of the adhesive layer, thus improving production efficiency and ensuring the stability of fuel transportation.

[0038] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A feeder for a biomass pellet burner, characterized in that: The device includes a frame, on which a feeding hopper and a conveying mechanism are mounted. The conveying mechanism includes a housing, a first screw rod, a second screw rod, and a drive component for driving the screw rods. The feeding hopper is connected to the inlet end of the housing. The first and second screw rods are arranged in parallel and are rotatably connected inside the housing. Air jet pipes are provided on both sides of the housing and are arranged along the length of the housing. Each air jet pipe is provided with multiple nozzles, and the multiple nozzles extend into the housing. The outlet end of the housing is connected to a chute.

2. The feeder for a biomass pellet burner according to claim 1, characterized in that: Both the first and second screws are arranged from the feed end of the housing toward the discharge end, and the first and second screws are parallel and do not intersect.

3. The feeder for a biomass pellet burner according to claim 2, characterized in that: The pitch of both the first and second screws increases in a stepwise manner in the direction of material conveying.

4. The feeder for a biomass pellet burner according to claim 1, characterized in that: The driving component includes a motor, a driving gear, and a driven gear. The driving gear and the driven gear are respectively sleeved on the first helical rod and the second helical rod, and the driving gear and the driven gear mesh with each other. The output end of the motor is connected to the end of the first helical rod.

5. A feeder for a biomass pellet burner according to claim 1, characterized in that: The top of the feeding hopper has a large feed inlet and a small feed inlet.

6. A feeder for a biomass pellet burner according to claim 1, characterized in that: The nozzles are evenly distributed on the jet pipe, and the jet direction of the nozzles is tilted towards the bottom of the housing.

7. A feeder for a biomass pellet burner according to claim 1, characterized in that: The chute is vertically disposed at the discharge end of the shell, and a flange assembly is provided between the chute and the discharge end of the shell.

8. A feeder for a biomass pellet burner according to claim 7, characterized in that: An observation port is provided on the wall of the chute, and an observation plate for sealing is provided at the observation port.

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