Biomass fuel granulator

Abstract

The utility model relates to a biomass fuel granulator, which belongs to the field of granulators and comprises a treatment box, and screening mechanisms for filtering, sorting and transferring biomass raw materials are arranged on the inner walls of the front side and the rear side of the treatment box. According to the biomass fuel granulator, the screening mechanism is arranged, crushed raw materials fall onto the screening plate, the biomass raw materials are screened under the vibration action of the vibration motor, and the raw materials with qualified sizes pass through holes of the screening plate, fall into the conveying belt and are conveyed to the granulation assembly of the granulator to be prepared into biomass fuel particles; the raw materials which are too large in size and cannot pass through the screening plate enter the material returning assembly, the raw materials are driven to be put into the treatment box again to be further crushed, the crushed raw materials enter the screening mechanism again to be screened, and the biomass raw materials are converted into biomass fuel particles consistent in size through the steps of screening, crushing, re-screening, pelleting and the like. And the combustion efficiency and the use convenience of the fuel are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pellet machines, in particular to a biomass fuel pellet machine. Background Art

[0002] A pellet machine is a pellet fuel forming machine that uses agricultural waste such as corn stalks, rice straw, wood chaff, wood powder, and sawdust as raw materials. The pellets made by this machine can be used in fireplaces, boilers, and biomass power plants. The pellet machine squeezes and rubs the raw materials in the working chamber through high-speed rotation of the pressure wheel and the mold to form the raw materials. No additives or binders are required to be added to the raw materials during the processing. The high-density pellet rods compressed by the pellet machine burn more fully, have a higher combustion value, and have low pollutant emissions after combustion.

[0003] A biomass fuel pellet machine disclosed in Chinese patent announcement No. CN213761997U includes a box body, a crushing box, a feed hopper, a motor mounting cylinder and a screen plate, a crushing box is welded on the surface edge side of the box body, a dust cover plate is installed on the side wall of the crushing box by multiple sets of screws, a feed slot is opened on the surface of the crushing box, and a feed hopper is welded at the feed slot, a circular through hole is opened on the side of the box body away from the feed hopper, and a motor mounting cylinder is installed at the circular through hole by multiple sets of screws, left and right side walls of the box body are opened with transverse grooves, and a first mounting groove and a second mounting groove are installed at the transverse grooves respectively, the interiors of the first mounting groove and the second mounting groove are both abutted and fixed with the connecting part of the screen plate, and the screen plate is welded by a first screen, a second screen, a third screen and two sets of connecting parts. The biomass fuel pellet machine can screen and classify the size of the crushed particles, thereby improving the production quality of the pellet machine.

[0004] However, the prior art disclosed in the above patent still has the problem that the biomass raw materials after screening cannot be quickly classified and transported. For example, the technology disclosed in the above patent sets a multi-stage filter structure to make the crushed biomass raw materials roll along its surface, and screens raw materials of different sizes through different filter sizes to make the raw materials of similar size during granulation. The raw materials separated in the process are only collected by the bottom collection frame, and need to be dragged out and transported according to different sizes for re-crushing or granulation processing. This method will lead to the addition of additional steps, and continuous granulation processing cannot be performed, which affects production efficiency. Utility Model Content

[0005] In view of the shortcomings of the prior art, the utility model provides a biomass fuel pellet machine, which has the advantages of high screening, classification and transportation efficiency, and solves the problem in the prior art that the screened biomass raw materials cannot be quickly classified and transported.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a biomass fuel pellet machine, comprising a processing box, the front and rear inner walls of the processing box are provided with a screening mechanism for filtering, sorting and transporting biomass raw materials, and a crushing part for crushing the biomass raw materials is provided between the left and right inner walls of the processing box;

[0007] The screening mechanism comprises four fixed frames, the four fixed frames are respectively fixed to the inner walls of the front and rear sides of the processing box, the inner walls of the left and right sides of the four fixed frames are fixed with support springs, a slide bar is fixed between the opposite sides of the support springs on the left and right sides, a support plate is provided between the opposite sides of the slide bars on the front and rear sides, a screening plate is fixed to the upper surface of the support plate, and a vibration motor is provided below the screening plate;

[0008] The inner bottom wall of the processing box is provided with a conveyor belt for conveying raw materials of qualified size, and the left side of the processing box is provided with a return material component for conveying unqualified raw materials for secondary crushing.

[0009] Furthermore, a hopper is provided on the upper surface of the processing box.

[0010] Furthermore, a pellet machine granulation assembly is provided on the right side of the conveyor belt, and guard plates are fixed on both the front and rear sides of the upper surface of the conveyor belt.

[0011] Furthermore, a flow guide cover is fixed between the inner walls of the four sides of the processing box and above the conveyor belt, and a controller is provided on the front of the processing box.

[0012] Furthermore, the material return assembly includes a material return pipe, a screw shaft, a drive motor, a feed hopper and a feed discharge pipe;

[0013] The return pipe is arranged on the left side of the processing box, and the two ends of the spiral shaft are rotatably connected to the upper and lower inner walls of the return pipe through bearings respectively. The drive motor is fixed to the lower side of the return pipe, and the output shaft of the drive motor is connected to the spiral shaft. A return port corresponding to the position of the screening plate is opened on the left inner wall of the processing box, the feed hopper is fixed to the inner wall of the return port, and the left side of the feed hopper is connected to the outer side of the return pipe, and the discharge pipe is connected to the outer side of the return pipe.

[0014] Furthermore, the bottom end of the feed pipe penetrates and extends into the interior of the feeding hopper.

[0015] Furthermore, the width of the screening plate is equal to the distance between the front and rear inner walls of the processing box.

[0016] Furthermore, a raw material outlet is provided on the right inner wall of the processing box, and the bottom of the conveyor belt is connected to the inner bottom wall of the raw material outlet.

[0017] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0018] 1. The biomass fuel pellet machine is equipped with a screening mechanism. The crushed raw materials fall onto the screening plate. The biomass raw materials are screened by the vibration of the vibration motor. The qualified raw materials pass through the holes of the screening plate and fall into the conveyor belt and are transported to the pellet machine granulation component to make biomass fuel pellets. The oversized raw materials that fail to pass through the screening plate enter the return component to drive the raw materials back into the processing box for further crushing. The crushed raw materials enter the screening mechanism again for screening. Through the steps of screening, crushing, re-screening, granulation, etc., the biomass raw materials are converted into biomass fuel pellets of uniform size to improve the combustion efficiency of the fuel and the convenience of use.

[0019] 2. The biomass fuel pellet machine is equipped with a return component. When the unqualified raw materials screened out by the screening plate fall into the return port, they will be guided into the feed hopper, the drive motor will start, and the screw shaft will be driven to rotate, thereby pushing the unqualified raw materials to be transported upward along the return pipe. The unqualified raw materials transported by the screw shaft enter the discharge pipe from the return pipe, and the unqualified raw materials are transported back to the crushing part through the discharge pipe, where they will be further crushed to reach the required size, and then re-enter the screening process. The cycle process ensures that all raw materials are fully crushed and screened until they reach a size suitable for the biomass fuel pellet machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the screening mechanism of the utility model;

[0022] Figure 3 For this utility model Figure 2 A schematic diagram of the structure enlargement in the middle;

[0023] Figure 4 It is a top view of the crushing part of the utility model.

[0024] In the figure: 1 processing box, 2 screening mechanism, 21 fixed frame, 22 supporting spring, 23 sliding rod, 24 supporting plate, 25 screening plate, 26 vibration motor, 27 conveyor belt, 28 return material assembly, 281 return material pipe, 282 screw shaft, 283 driving motor, 284 feed hopper, 285 discharge pipe, 29 guide cover, 3 crushing part, 4 feeding hopper, 5 pellet machine granulation assembly. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4 , a biomass fuel pellet machine in this embodiment is used to filter and screen biomass raw materials;

[0027] Specifically, it comprises a processing box 1, the front and rear inner walls of the processing box 1 are provided with a screening mechanism 2 for filtering, sorting and transporting biomass raw materials, and between the left and right inner walls of the processing box 1 is a crushing part 3 for crushing the biomass raw materials.

[0028] Specifically, in order to screen and transport the biomass raw materials, the screening mechanism 2 in this embodiment includes four fixed frames 21, and the four fixed frames 21 are respectively fixed to the front and rear inner walls of the processing box 1. Support springs 22 are fixed to the left and right inner walls of the four fixed frames 21. A slide bar 23 is fixed between the opposite sides of the left and right support springs 22. A support plate 24 is provided between the opposite sides of the front and rear slide bars 23. A screening plate 25 is fixed to the upper surface of the support plate 24. The biomass raw materials first enter the processing box 1 through the feeding hopper 4, and the crushing part 3 crushes the incoming raw materials, and the crushed raw materials fall onto the screening plate 25.

[0029] In addition, a vibration motor 26 is provided below the screening plate 25. The biomass raw materials are vibrated by the vibration motor 26 in the processing box 1. The raw materials are screened on the screening plate 25. Raw materials of qualified size pass through the holes of the screening plate 25 and fall into the conveyor belt 27 below. The inner bottom wall of the processing box 1 is provided with a conveyor belt 27 for conveying raw materials of qualified size. The qualified raw materials are conveyed by the conveyor belt 27 to the pelletizing assembly 5 of the pellet machine, where the raw materials are made into biomass fuel pellets.

[0030] Furthermore, in order to facilitate secondary crushing of unqualified raw materials, a return material component 28 is provided on the left side of the processing box 1 for conveying unqualified raw materials for secondary crushing. The crushing unit 3 further crushes the unqualified raw materials returned by the return material component 28, and the crushed raw materials enter the screening mechanism 2 again for screening, and the cycle is repeated until all raw materials reach the required size.

[0031] In detail, in order to play the role of returning materials, the return material assembly 28 in this embodiment includes a return material pipe 281, a spiral shaft 282, a drive motor 283, a feed hopper 284 and a discharge pipe 285. The return material pipe 281 is arranged on the left side of the processing box 1, and the two ends of the spiral shaft 282 are rotatably connected to the upper and lower inner walls of the return material pipe 281 through bearings respectively. When the unqualified raw materials screened out by the screening plate 25 fall into the return material port, they will be guided into the feed hopper 284. The drive motor 283 is fixed to the lower side of the return material pipe 281, and the output shaft of the drive motor 283 is connected to the spiral shaft 282. The left inner wall of the processing box 1 is provided with a return material port corresponding to the position of the screening plate 25.

[0032] During actual use, the drive motor 283 is started, driving the screw shaft 282 to rotate, thereby pushing the unqualified raw materials to be transported upward along the return pipe 281. The unqualified raw materials transported by the screw shaft 282 enter the discharge pipe 285 from the return pipe 281. The feed hopper 284 is fixed to the inner wall of the return port, and the left side of the feed hopper 284 is connected to the outside of the return pipe 281. The discharge pipe 285 is connected to the outside of the return pipe 281. The unqualified raw materials are transported back to the crushing part 3 through the discharge pipe 285, where they will be further crushed to reach the required size, and then re-enter the screening process.

[0033] In actual setting, a feeding hopper 4 is provided on the upper surface of the processing box 1, and the bottom end of the discharge pipe 285 passes through and extends to the interior of the feeding hopper 4. A granulator granulating assembly 5 is provided on the right side of the conveyor belt 27. Guard plates are fixed on the front and rear sides of the upper surface of the conveyor belt 27. Guard plates are installed on the front and rear sides of the conveyor belt 27 to protect the conveyor belt 27 and prevent raw materials from scattering. A guide cover 29 is fixed between the inner walls of the four sides of the processing box 1 and above the conveyor belt 27. A controller is provided on the front of the processing box 1. The width of the screening plate 25 is equal to the distance between the inner walls of the front and rear sides of the processing box 1. A raw material output port is provided on the right inner wall of the processing box 1, and the bottom of the conveyor belt 27 is connected to the inner bottom wall of the raw material output port.

[0034] The working principle of the above embodiment is:

[0035] (1) When the biomass raw materials are screened and transported for use, the biomass raw materials first enter the processing box 1 through the feeding hopper 4, and the crushing unit 3 crushes the incoming raw materials. The crushed raw materials fall onto the screening plate 25. The biomass raw materials are vibrated by the vibration motor 26 in the processing box 1. The raw materials are screened on the screening plate 25. The raw materials of qualified size pass through the holes of the screening plate 25 and fall into the conveyor belt 27 below. The qualified raw materials are transported by the conveyor belt 27 to the pellet machine pelletizing component 5, where the raw materials are made into biomass fuel pellets. The front and rear sides of the conveyor belt 27 are equipped with guard plates to protect the conveyor belt 27 and prevent the raw materials from scattering. The oversized raw materials that fail to pass through the screening plate 25 fall into the return port and enter the return component 28 to drive the raw materials back into the processing box 1. The crushing unit 3 further crushes the unqualified raw materials returned by the return component 28. The crushed raw materials enter the screening mechanism 2 again for screening, and the cycle is repeated until all the raw materials reach the required size.

[0036] (2) When the raw materials that do not meet the granulation size are used for secondary recycling and crushing, when the unqualified raw materials screened out by the screening plate 25 fall into the recycling port, they will be guided into the feed hopper 284, the drive motor 283 will be started, and the screw shaft 282 will be driven to rotate, thereby pushing the unqualified raw materials to be transported upward along the recycling pipe 281, and the unqualified raw materials transported by the screw shaft 282 will enter the discharge pipe 285 from the recycling pipe 281, and the unqualified raw materials will be transported back to the crushing part 3 through the discharge pipe 285, where they will be further crushed to reach the required size, and then re-enter the screening process.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A biomass fuel pellet machine, comprising a processing box (1), characterized in that: The front and rear inner walls of the processing box (1) are provided with screening mechanisms (2) for filtering, sorting and transporting the biomass raw materials, and the left and right inner walls of the processing box (1) are provided with a crushing part (3) for crushing the biomass raw materials; The screening mechanism (2) comprises four fixed frames (21), the four fixed frames (21) are respectively fixed to the front and rear inner walls of the processing box (1), the left and right inner walls of the four fixed frames (21) are fixed with support springs (22), a slide bar (23) is fixed between the opposite sides of the support springs (22) on the left and right sides, a support plate (24) is provided between the opposite sides of the slide bars (23) on the front and rear sides, a screening plate (25) is fixed on the upper surface of the support plate (24), and a vibration motor (26) is provided below the screening plate (25); The inner bottom wall of the processing box (1) is provided with a conveyor belt (27) for conveying raw materials of qualified size, and the left side of the processing box (1) is provided with a return material assembly (28) for conveying unqualified raw materials for secondary crushing.

2. A biomass fuel pellet machine according to claim 1, characterized in that: A feeding hopper (4) is provided on the upper surface of the processing box (1).

3. The biomass fuel pellet machine according to claim 1, characterized in that: A pellet machine granulation assembly (5) is provided on the right side of the conveyor belt (27), and guard plates are fixed on both the front and rear sides of the upper surface of the conveyor belt (27).

4. The biomass fuel pellet machine according to claim 1, characterized in that: A flow guide cover (29) is fixed between the inner walls of the four sides of the processing box (1) and above the conveyor belt (27), and a controller is provided on the front of the processing box (1).

5. The biomass fuel pellet machine according to claim 1, characterized in that: The material return assembly (28) comprises a material return pipe (281), a screw shaft (282), a drive motor (283), a feed hopper (284) and a material discharge pipe (285); The return pipe (281) is arranged on the left side of the processing box (1), and the two ends of the spiral shaft (282) are rotatably connected to the upper and lower inner walls of the return pipe (281) through bearings respectively. The drive motor (283) is fixed to the lower side of the return pipe (281), and the output shaft of the drive motor (283) is connected to the spiral shaft (282). A return opening corresponding to the position of the screening plate (25) is opened on the left inner wall of the processing box (1), and the feed hopper (284) is fixed to the inner wall of the return opening, and the left side of the feed hopper (284) is connected to the outer side of the return pipe (281), and the discharge pipe (285) is connected to the outer side of the return pipe (281).

6. The biomass fuel pellet machine according to claim 5, characterized in that: The bottom end of the feed pipe (285) penetrates and extends into the interior of the feeding hopper (4).

7. The biomass fuel pellet machine according to claim 1, characterized in that: The width of the screening plate (25) is equal to the distance between the inner walls at the front and rear sides of the processing box (1).

8. The biomass fuel pellet machine according to claim 1, characterized in that: A raw material outlet is provided on the right inner wall of the processing box (1), and the bottom of the conveyor belt (27) is connected to the inner bottom wall of the raw material outlet.

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