A drying device for biomass particle production and processing

Abstract

This application relates to a drying apparatus for biomass pellet production and processing, belonging to the field of biomass pellet production technology. It includes a drying chamber, with a hot air mechanism installed on the top wall inside the drying chamber. A screen is installed below the hot air mechanism, and a waste box is installed below the screen. A mounting bracket is provided between the hot air mechanism and the screen, and a rotating component is mounted on the mounting bracket. A material-pushing plate is sleeved on the peripheral wall of the output shaft of the rotating component. This application effectively improves the problem of biomass pellets easily getting stuck in the screen mesh during the drying process.

Description

Technical Field

[0001] This application relates to the field of biomass pellet production technology, and in particular to a drying apparatus for biomass pellet production and processing. Background Technology

[0002] Biomass pellets are cylindrical or spherical pellet fuels made from agricultural and forestry waste and some plant-based industrial residues through crushing, drying, and compression processes. They are a new type of renewable energy that can replace fossil fuels such as coal. Drying is an indispensable step in the production of biomass pellets, which can reduce the moisture content of the pellets and thus improve the quality of the product. To improve the drying effect, existing technologies generally spread the biomass pellets on the surface of a screen and install a hot air device above the screen to continuously dry the pellets on the screen surface. This method can accelerate the loss of moisture from the biomass pellets and also screen out biomass pellets that do not meet production requirements, making it highly practical in the drying process. However, after the moisture content is reduced, the particle size of some biomass pellets will decrease slightly, which can easily cause the pellets to get stuck in the screen, affecting the flow of moisture and the yield of biomass pellets. Therefore, improvements are needed. Utility Model Content

[0003] In order to improve the problem that biomass pellets are easily stuck in the mesh of the screen during the drying process, this application provides a drying device for biomass pellet production and processing.

[0004] The drying device for biomass pellet production and processing provided in this application adopts the following technical solution: A drying device for biomass pellet production and processing includes a drying chamber. A hot air mechanism is provided on the top wall inside the drying chamber. A screen is provided below the hot air mechanism. A waste box is provided below the screen. A mounting bracket is provided between the hot air mechanism and the screen. A rotating component is provided on the mounting bracket. A material feeding plate is sleeved on the peripheral wall of the output shaft of the rotating component.

[0005] By adopting the above technical solution, when biomass pellets are placed on the screen surface, the rotating component drives the feeding plate to rotate. On the one hand, it can evenly spread the biomass pellets on the screen surface, reduce the overlap rate between biomass pellets, and thus improve drying efficiency. On the other hand, it can continuously move the biomass pellets to prevent them from gradually getting stuck in the mesh of the screen.

[0006] Preferably, the mounting bracket is further provided with a lifting component, and the rotating component is connected to the piston rod of the lifting component.

[0007] By adopting the above technical solution, the lifting component can change the height of the feeding plate based on the thickness of the biomass particles on the screen surface, thereby improving the flexibility and applicability of the drying device of this application.

[0008] Preferably, the surface of the feeding plate away from the screen is provided with a conical structure.

[0009] By adopting the above technical solution, the cone structure can prevent biomass pellets from accumulating on the top wall of the feeding plate during its rotation. This reduces the operating pressure on the feeding plate and ensures the output of biomass pellets.

[0010] Preferably, a baffle ring is provided around the screen, and an adjusting component is provided on the inner wall of the drying chamber. The piston rod of the adjusting component is arranged in a vertical direction and is connected to the outer wall of the baffle ring.

[0011] By adopting the above technical solution, the baffle ring plate can prevent the biomass pellets on the screen surface from flying off the screen during the operation of the feeding plate, thereby ensuring the orderly progress of the drying process and the output of biomass pellets.

[0012] Preferably, the screen is provided with a rotating shaft in the center, which drives the screen to rotate relative to the drying box. A discharge port is provided on one side of the screen below, and the discharge port is located outside the baffle ring plate.

[0013] By adopting the above technical solution and setting a rotating shaft, the screen can be driven to rotate by an external motor, thereby realizing the automatic feeding of biomass particles on the screen surface after drying is completed, which improves the automation performance of the drying device of this application.

[0014] Preferably, a pin plate is provided between the screen and the waste box, and a plurality of pin bodies are vertically arranged on the surface of the pin plate. The pin bodies are arranged corresponding to the mesh of the screen. A lifting mechanism is provided on the inner wall of the drying chamber. The lifting mechanism is connected to the pin plate to drive the pin plate to move up and down.

[0015] By adopting the above technical solution, the lifting mechanism drives the ejector plate to rise, which allows the ejector body to enter the mesh of the screen, thereby ejecting the biomass pellets stuck in the mesh. In conjunction with the feeding plate, this further improves the problem of biomass pellets easily clogging the screen.

[0016] Preferably, the ejector plate is hollowed out, and a supporting steel strip mesh is provided in the hollowed-out part of the ejector plate, with the ejector body disposed at the intersection of the supporting steel strip mesh.

[0017] By adopting the above technical solution, the ejector plate is hollowed out, which facilitates the entry of small biomass pellets and the moisture contained in the biomass pellets into the waste box through the supporting steel belt mesh, thereby preventing moisture and biomass pellets from accumulating on the surface of the ejector plate.

[0018] Preferably, the air outlet of the hot air mechanism is provided with a diffuser.

[0019] By adopting the above technical solution, the flow diffuser can be set up to allow the hot air of the hot air mechanism to have a larger blowing area, thereby drying the biomass particles over a larger area of ​​the screen surface, thus effectively improving the working efficiency of the drying device of this application.

[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. This application, by setting up a feeding plate and a ejector pin body, can work together to reduce the probability of biomass pellets clogging the screen mesh, reduce the cleaning frequency, and ensure the output of biomass pellets; 2. The cone structure on the surface of the feeding plate and the hollowed-out design of the ejector plate in this application can effectively prevent the accumulation of biomass pellets, thereby reducing the burden on the overall mechanism operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a drying device for biomass pellet production and processing according to an embodiment of this application.

[0022] Figure 2 yes Figure 1 A magnified view of a portion of point A in the middle.

[0023] Explanation of reference numerals in the attached drawings: 1. Drying oven; 11. Discharge port; 2. Hot air mechanism; 21. Flow diffuser; 3. Screen; 31. Baffle ring; 32. Adjusting component; 33. Rotating shaft; 4. Waste box; 5. Mounting bracket; 51. Rotating component; 52. Feeding plate; 53. Lifting component; 54. Conical structure; 6. Ejector plate; 61. Ejector body; 62. Lifting mechanism; 63. Supporting steel strip mesh. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0025] This application discloses a drying apparatus for biomass pellet production and processing. (Refer to...) Figure 1 The device includes a drying chamber 1, and a hot air mechanism 2 is provided on the top wall inside the drying chamber 1 for outputting drying hot air. In this embodiment, the hot air mechanism 2 consists of an electric heating wire and a fan. The air outlet of the hot air mechanism 2 is provided with a diffuser 21 to expand the area that the hot air can blow, thereby improving the drying efficiency.

[0026] Reference Figure 1 A screen 3 is installed below the hot air mechanism 2. A feed inlet is opened on one side wall of the drying chamber 1 for feeding biomass pellets onto the surface of the screen 3. A baffle ring 31 is installed around the screen 3. An adjusting component 32 is installed on the inner wall of the drying chamber 1. In this embodiment, the adjusting component 32 is a cylinder. The piston rod of the adjusting component 32 is set in the vertical direction. The piston rod of the adjusting component 32 is connected to the outer wall of the baffle ring 31 through a connecting rod. The adjusting component 32 drives the baffle ring 31 to descend, thereby preventing the biomass pellets on the surface of the screen 3 from leaving the range of the screen 3 and improving the problem of random splashing of biomass pellets.

[0027] Reference Figure 1 A mounting bracket 5 is provided between the hot air mechanism 2 and the screen 3. A lifting component 53 is provided on the mounting bracket 5. In this embodiment, the lifting component 53 is a cylinder with its piston rod arranged in the vertical direction. A rotating component 51 is provided at the end of the piston rod of the lifting component 53. The rotating component 51 is a motor. A material-pushing plate 52 is provided on the peripheral wall of the output shaft of the rotating component 51. The output shaft of the rotating component 51 is coaxial with the screen 3. The distance from the axis of the rotating component 51 to the end of the material-pushing plate 52 away from the rotating component 51 is less than the radius of the screen 3. After the rotating component 51 drives the material-pushing plate 52 to rotate, it can, on the one hand, move the biomass pellets, making the biomass pellets more evenly distributed, thereby improving the drying efficiency. On the other hand, it can continuously move the biomass pellets to prevent the biomass pellets from getting stuck in the mesh of the screen 3.

[0028] Reference Figure 1 The surface of the feeding plate 52 is integrally formed with a conical structure 54 to prevent biomass pellets from accumulating on the surface of the feeding plate 52 during rotation, thereby reducing the burden on the feeding plate 52 and extending its service life.

[0029] Reference Figure 1 and Figure 2 The screen 3 has a rotating shaft 33 inside, which drives the screen 3 to rotate relative to the drying box 1. The drying box 1 has a motor outside, and the output shaft of the external motor is connected to the rotating shaft 33 to drive the screen 3 to rotate. The screen 3 has a discharge port 11 on one side below, which is located outside the baffle ring 31. When the baffle ring 31 rises and the screen 3 is no longer blocked, the external motor drives the screen 3 to rotate through the rotating shaft 33, causing the screen 3 to tilt and pour the biomass particles on the surface of the screen 3 into the discharge port 11, thus realizing automated discharge.

[0030] Reference Figure 1Below the screen 3, a waste box 4 is provided to collect small-sized biomass pellets and the moisture contained within them. Between the screen 3 and the waste box 4, a pin plate 6 is provided. The pin plate 6 is hollow and contains a supporting steel strip mesh 63. The supporting steel strip mesh 63 is arranged in a crisscross pattern, and a pin body 61 is vertically arranged at the intersection of the supporting steel strip mesh 63. The pin body 61 corresponds to the mesh opening of the screen 3. A lifting mechanism 62 is provided on the inner wall of the drying chamber 1. In this embodiment, the lifting mechanism 62 is a cylinder with its piston rod arranged vertically. The piston rod is connected to the outer wall of the pin plate 6 through a connecting rod to drive the pin body 61 to move towards the screen 3 and push out the biomass pellets stuck in the mesh opening of the screen 3.

[0031] The implementation principle of the drying device for biomass pellet production and processing in this embodiment is as follows: The adjusting component 32 is activated, causing the baffle ring 31 to surround the screen 3. Biomass pellets are poured into the drying chamber 1, and the biomass pellets fall onto the surface of the screen 3. The hot air mechanism 2 is activated, blowing out hot air to dry the biomass pellets. The lifting component 53 and the rotating component 51 are activated, driving the material-distributing plate 52 to rise and rotate, dispersing the biomass pellets accumulated on one side of the screen 3 surface, so that the biomass pellets are evenly distributed on the screen 3 surface, improving drying efficiency and producing small-particle biomass pellets. The biomass pellets and their contained moisture will fall into the waste box 4, while the biomass pellets are continuously agitated to prevent them from getting stuck in the mesh of the screen 3 after drying. The ejector plate 6, under the action of the lifting mechanism 62, moves the ejector body 61 toward the mesh of the screen 3, cooperating with the feeding plate 52 to reduce the probability of the screen 3 being blocked. After drying is completed, the adjusting component 32 drives the baffle ring 31 to rise, and the external motor drives the screen 3 to rotate through the rotating shaft 33, so that the screen 3 tilts toward the discharge port 11, completing the automated discharge of biomass pellets.

[0032] 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 drying device for biomass pellet production and processing, characterized in that: The device includes a drying chamber, with a hot air mechanism installed on the top wall inside the drying chamber. A screen is installed below the hot air mechanism, and a waste box is installed below the screen. A mounting bracket is installed between the hot air mechanism and the screen. A rotating component is installed on the mounting bracket, and a material feeding plate is sleeved on the peripheral wall of the output shaft of the rotating component.

2. The drying apparatus for biomass pellet production and processing according to claim 1, characterized in that: The mounting bracket is also equipped with a lifting component, and the rotating component is connected to the piston rod of the lifting component.

3. The drying apparatus for biomass pellet production and processing according to claim 1, characterized in that: The surface of the feeding plate away from the screen is provided with a conical structure.

4. The drying apparatus for biomass pellet production and processing according to claim 1, characterized in that: A baffle ring is provided around the screen, and an adjusting component is provided on the inner wall of the drying chamber. The piston rod of the adjusting component is arranged in a vertical direction and is connected to the outer wall of the baffle ring.

5. A drying apparatus for biomass pellet production and processing according to claim 4, characterized in that: The screen is provided with a rotating shaft in the center, which drives the screen to rotate relative to the drying box. A discharge port is provided on one side of the screen, located outside the baffle ring plate.

6. A drying apparatus for biomass pellet production and processing according to claim 1, characterized in that: A pin plate is provided between the screen and the waste box. Several pin bodies are vertically arranged on the surface of the pin plate. The pin bodies are arranged to correspond to the mesh of the screen. A lifting mechanism is provided on the inner wall of the drying oven. The lifting mechanism is connected to the pin plate to drive the pin plate to move up and down.

7. A drying apparatus for biomass pellet production and processing according to claim 6, characterized in that: The ejector plate is hollowed out, and a supporting steel strip mesh is provided in the hollowed-out part of the ejector plate. The ejector body is located at the intersection of the supporting steel strip mesh.

8. A drying apparatus for biomass pellet production and processing according to claim 1, characterized in that: The air outlet of the hot air mechanism is equipped with a diffuser.

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