Biomass particle granulator with self-cleaning function

Abstract

The utility model belongs to the technical field of pelletizers, particularly relates to a biomass particle pelletizer with a self-cleaning function, and aims to solve the problems of low discharging speed, poor finished product quality and general cleaning effect in the background technology, the following scheme is provided: the biomass particle pelletizer comprises symmetrically distributed vertical cylinders, the inner walls of the vertical cylinders are rotatably connected with spiral augers, and the spiral augers are connected with a spiral shaft; and a belt pulley group is mounted between the two spiral augers. Materials entering the vertical cylinder can be forcibly conveyed downwards under the action of the spiral packing auger, the situation that too many materials are scattered out is avoided, the extrusion force received by the materials is large, the discharging speed is high, the rotary cutter is driven by the slitting motor to rotate, the extruded and discharged materials can be continuously slit into particles of the same size, and the production efficiency is improved. Therefore, the quality of material particle finished products is improved, the interior of each vertical cylinder can be independently cleaned, water resources are saved, related structures can be thoroughly cleaned through the positive flushing pipe and the back flushing pipe, and the cleaning effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of granulators, in particular to a granulator for biomass particles with a self-cleaning function. Background Art

[0002] Biomass pellets are primarily made from low-grade biomass, including crop straw, wood chips, sawdust, fruit shells, corn cobs, rice straw, wheat straw, wheat bran, and tree branches. These raw materials are crushed at room temperature using rollers and a ring die, then cold-formed into compacted pellets. This clean fuel, compressed into biomass pellets of varying densities without the addition of any additives or binders, boasts environmentally friendly and renewable properties. It is widely used as a replacement for coal and gas for power generation and heating, and is also used in animal mattresses and in the production of biodiesel and bioethanol.

[0003] After searching, the patent (application number: 202120027130.X) discloses "a granulator for biomass pellets with a self-cleaning function". The feed port of the granulator for biomass pellets with a self-cleaning function can place the material to be extruded into pellets into the interior of the granulator. At the same time, the design of the tightening of the middle section of the protective shell can reduce the material discharge rate, which is conducive to helping the granulator to granulate evenly and to thoroughly dry the pellets themselves, thereby improving the practicality of the granulator. The water storage side plate can store water. After use, the water can be pumped into the device by a water pump to clean the interior, thereby improving the internal cleanliness of the granulator. However, the following problems exist during the operation of the device:

[0004] First, the device extrude particles by fitting the processing groove with the rotating granulating disk. However, the processing groove is in a semi-cylindrical structure with the opening facing upward. Not only is the material easy to scatter due to accumulation, but the extrusion force received by the material is not strong enough to achieve the forced extrusion effect, and the discharge speed is slow.

[0005] Secondly, although the material is extruded through the processing groove, there is no cutting structure, which cannot guarantee the consistency of the material particle size, and the quality of the finished product is poor;

[0006] In addition, the cleaning structure in the device mainly flushes by spraying water from a shower head, but this structure has a large cleaning dead angle, a general cleaning effect, and consumes a large amount of water. Utility Model Content

[0007] In view of the deficiencies of the existing technology, the utility model provides a biomass pellet granulator with a self-cleaning function, which overcomes the deficiencies of the existing technology and effectively solves the problems of slow discharge speed, poor quality of finished products and general cleaning effect.

[0008] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0009] A biomass pelletizer with a self-cleaning function comprises symmetrically distributed vertical cylinders, wherein the inner wall of the vertical cylinder is rotatably connected to a spiral auger, and a pulley group is installed between the two spiral augers, a driven gear is fixedly connected to the top of the outer wall of one of the spiral augers, and a driving gear is meshed with the outer wall of the driven gear, and a conveying motor is installed on the outer wall of the bottom of the driving gear;

[0010] The bottom outer wall of the vertical cylinder is welded with a bottom frame, and the bottom outer wall of the bottom frame is fixedly connected to a granulation plate by bolts, a mounting seat is fixedly connected between the two bottom frames, and the top outer wall of the mounting seat is fixedly connected to a slitting motor, and the slitting motor conveying shaft is fixedly connected to a rotary cutter;

[0011] A water pump is provided on one side of the outer wall of the bottom of the vertical cylinder, and the water pump discharge port is fixedly connected to a water main pipe, the outer wall of one end of the water main pipe is fixedly connected to symmetrically distributed water branch pipes, and the outer wall of one end of the water branch pipe is respectively provided with a forward flush pipe and a back flush pipe, and the outer wall of the water branch pipe is installed with a solenoid valve.

[0012] Preferably, the conveying motor is fixedly connected to an outer wall of one side of one of the vertical cylinders by bolts.

[0013] Preferably, a filter screen is provided on the bottom outer wall of the granulation plate, and the rotary cutter is closely attached to the bottom outer wall of the filter screen.

[0014] Preferably, the forward flushing pipe is fixedly connected to the top inner wall of the vertical cylinder, and the back flushing pipe is arranged at the bottom of the granulation plate.

[0015] Preferably, a feed pump is provided on the other side of the outer wall of the bottom of the vertical cylinder, and the discharge port of the feed pump is fixedly connected to the feed pipe, and the outer wall of one end of the feed pipe is fixedly connected to a tee pipe, and the outer walls of both ends of the tee pipe are fixedly connected to the outer wall of the vertical cylinder through flanges.

[0016] Preferably, a lower hopper is provided on the outer wall of the bottom of the vertical cylinder, and a lower hopper pipe is welded at the center of the outer wall of the bottom of the lower hopper.

[0017] Preferably, symmetrically distributed connecting plates are welded between the bottom frame and the lower hopper.

[0018] Preferably, a PLC controller is installed on the outer wall of one side of the lower hopper, and the PLC controller is connected to the conveying motor, slitting motor, water pump, solenoid valve and feed pump through signal lines.

[0019] The beneficial effects of the utility model are:

[0020] 1. The biomass pellet granulator with self-cleaning function designed in this paper, with the cooperation of the pulley group, driving gear and passive gear, can simultaneously drive the two spiral augers to rotate by driving the driving gear through the conveying motor. The material entering the vertical cylinder can be forced downward by the spiral augers, which not only avoids the material from being scattered due to excessive material, but also the material is subjected to a large extrusion pressure and the discharge speed is fast.

[0021] 2. The biomass pellet granulator designed with self-cleaning function can continuously cut the extruded material into particles of the same size by driving the rotary cutter with the cutting motor. On this basis, the bottom frame and the pelletizing plate are fixedly connected by bolts, which are easy to replace, thereby improving the quality of the finished material pellets.

[0022] 3. The biomass pellet granulator with self-cleaning function designed in this paper can divide the water flow delivered by the water pump into four parts under the cooperation of the water supply main pipe, water supply branch pipe, forward flushing pipe and back flushing pipe. The inside of each vertical cylinder can be cleaned independently, saving water resources. In addition, the forward flushing pipe and back flushing pipe can thoroughly clean the related structures, and the cleaning effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a biomass pelletizer with a self-cleaning function proposed in the present invention;

[0024] Figure 2 This is a rear view of the overall structure of a biomass pelletizer with a self-cleaning function proposed in the utility model;

[0025] Figure 3 This is a schematic diagram of the internal structure of the vertical cylinder of a biomass pelletizer with self-cleaning function proposed in this utility model. Figure 1 ;

[0026] Figure 4 This is a schematic diagram of the internal structure of the vertical cylinder of a biomass pelletizer with self-cleaning function proposed in this utility model. Figure 2 .

[0027] In the figure: 1. Vertical cylinder; 2. Auger; 3. Pulley assembly; 4. Passive gear; 5. Driving gear; 6. Conveying motor; 7. Bottom frame; 8. Granulating plate; 9. Mounting seat; 10. Slitting motor; 11. Peeler; 12. Water pump; 13. Water main pipe; 14. Water branch pipe; 15. Forward flush pipe; 16. Back flush pipe; 17. Solenoid valve; 18. Feed pump; 19. Feed pipe; 20. Tee pipe; 21. Feed hopper; 22. Feed pipe; 23. Connecting plate; 24. PLC controller. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1, refer to Figure 3 A biomass pelletizer with a self-cleaning function includes a symmetrically distributed vertical cylinder 1, the inner wall of the vertical cylinder 1 is rotatably connected to a spiral auger 2, and a pulley group 3 is installed between the two spiral auger 2, the top of the outer wall of one of the spiral auger 2 is fixedly connected to a passive gear 4, and the outer wall of the passive gear 4 is meshed with a driving gear 5, and a conveying motor 6 is installed on the outer wall of the bottom of the driving gear 5.

[0030] In this embodiment, with the mutual cooperation of the pulley group 3, the driving gear 5 and the driven gear 4, the driving gear 5 is driven to rotate by the conveying motor 6, which can simultaneously drive the two spiral augers 2 to rotate. The material entering the vertical cylinder 1 can be forced to be conveyed downward under the action of the spiral augers 2, which not only avoids the excessive dispersion of the material, but also the material is subjected to a large extrusion pressure and the discharge speed is fast.

[0031] Example 2, refer to Figures 3 to 4 A granulator for biomass pellets with a self-cleaning function, a bottom frame 7 is welded to the bottom outer wall of the vertical cylinder 1, and the bottom outer wall of the bottom frame 7 is fixedly connected to a granulating plate 8 by bolts, a mounting seat 9 is fixedly connected between the two bottom frames 7, and a slitting motor 10 is fixedly connected to the top outer wall of the mounting seat 9, and a rotary cutter 11 is fixedly connected to the conveying shaft of the slitting motor 10.

[0032] In this embodiment, the slitting motor 10 drives the rotary cutter 11 to continuously cut the extruded material into pellets of uniform size. Furthermore, the bottom frame 7 and pelletizing plate 8 are fixedly connected by bolts, making replacement easy and improving the quality of the finished pellets.

[0033] Example 3, refer to Figure 2 A biomass pelletizer with a self-cleaning function, a water pump 12 is provided on one side of the outer wall of the bottom of the vertical cylinder 1, and the discharge port of the water pump 12 is fixedly connected to a water main 13, and the outer wall of one end of the water main 13 is fixedly connected to a symmetrically distributed water branch 14, and the outer wall of one end of the water branch 14 is respectively provided with a forward flushing pipe 15 and a back flushing pipe 16, and the outer wall of the water branch 14 is installed with a solenoid valve 17.

[0034] In this embodiment, with the mutual cooperation of the water supply main pipe 13, the water supply branch pipe 14, the forward flush pipe 15 and the back flush pipe 16, the water flow delivered by the water pump 12 will be divided into four parts, and the interior of each vertical cylinder 1 can be cleaned independently, saving water resources, and the forward flush pipe 15 and the back flush pipe 16 can thoroughly clean the related structures, and the cleaning effect is good.

[0035] Reference Figure 3 The conveying motor 6 is fixedly connected to the outer wall of one side of one of the vertical cylinders 1 by bolts.

[0036] Reference Figure 4 A filter screen is provided on the bottom outer wall of the granulation plate 8, and the rotary cutter 11 is closely attached to the bottom outer wall of the filter screen.

[0037] Reference Figure 2 The forward flushing pipe 15 is fixedly connected to the top inner wall of the vertical cylinder 1, and the back flushing pipe 16 is arranged at the bottom of the granulation plate 8.

[0038] Reference Figure 1 A feed pump 18 is provided on the other side of the outer wall of the bottom of the vertical cylinder 1, and the discharge port of the feed pump 18 is fixedly connected to the feed pipe 19, and the outer wall of one end of the feed pipe 19 is fixedly connected to a tee pipe 20, and the outer walls of both ends of the tee pipe 20 are fixedly connected to the outer wall of the vertical cylinder 1 through flanges.

[0039] Reference Figure 1 A lower hopper 21 is provided on the outer wall of the bottom of the vertical cylinder 1, and a lowering pipe 22 is welded at the center of the outer wall of the bottom of the lower hopper 21.

[0040] Reference Figure 1 Symmetrically distributed connecting plates 23 are welded between the bottom frame 7 and the lower hopper 21.

[0041] Reference Figures 1 to 4 A PLC controller 24 is installed on the outer wall of one side of the lower hopper 21, and the PLC controller 24 is connected to the conveying motor 6, the slitting motor 10, the water pump 12, the solenoid valve 17 and the feed pump 18 through signal lines.

[0042] Working principle: First, the material is transported to the inside of the two vertical cylinders 1 respectively through the feed pump 18, and then the spiral auger 2 is driven by the conveying motor 6 to rotate to complete the forced downward conveying of the material. The material will be continuously squeezed out along the granulation plate 8. At the same time, the slitting motor 10 drives the rotary cutter 11 to rotate to continuously cut the material into particles of the same size. The material particles finally fall into the lower hopper 21 and are discharged. When cleaning the equipment, water can be delivered by the water pump 12. The water flow will be divided into four parts under the action of the water supply main pipe 13, the water supply branch pipe 14, the forward flushing pipe 15 and the back flushing pipe 16. The inside of each vertical cylinder 1 can be cleaned independently, and the forward flushing pipe 15 and the back flushing pipe 16 can thoroughly clean the vertical cylinder 1, the spiral auger 2, the bottom frame 7 and the granulation plate 8 and other structures.

[0043] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A biomass pelletizer with a self-cleaning function, comprising symmetrically distributed vertical cylinders (1), characterized in that: The inner wall of the vertical cylinder (1) is rotatably connected to a spiral auger (2), and a pulley group (3) is installed between the two spiral augers (2). The top of the outer wall of one of the spiral auger (2) is fixedly connected to a passive gear (4), and the outer wall of the passive gear (4) is meshed with a driving gear (5), and a conveying motor (6) is installed on the outer wall of the bottom of the driving gear (5); The bottom outer wall of the vertical cylinder (1) is welded with a bottom frame (7), and the bottom outer wall of the bottom frame (7) is fixedly connected to a granulation plate (8) by bolts, a mounting seat (9) is fixedly connected between the two bottom frames (7), and the top outer wall of the mounting seat (9) is fixedly connected to a slitting motor (10), and the conveying shaft of the slitting motor (10) is fixedly connected to a rotary cutter (11); A water pump (12) is provided on one side of the outer wall at the bottom of the vertical cylinder (1), and the water pump (12) outlet is fixedly connected to a water main pipe (13), and one end of the outer wall of the water main pipe (13) is fixedly connected to symmetrically distributed water branch pipes (14), and one end of the outer wall of the water branch pipe (14) is respectively provided with a forward flushing pipe (15) and a back flushing pipe (16), and the outer wall of the water branch pipe (14) is installed with a solenoid valve (17).

2. A biomass pellet granulator with a self-cleaning function according to claim 1, characterized in that: The conveying motor (6) is fixedly connected to an outer wall of one side of one of the vertical cylinders (1) by means of bolts.

3. The biomass pellet granulator with self-cleaning function according to claim 1, characterized in that: The bottom outer wall of the granulation plate (8) is provided with a filter screen, and the rotary cutter (11) is closely attached to the bottom outer wall of the filter screen.

4. The biomass pellet granulator with self-cleaning function according to claim 1, characterized in that: The forward flushing pipe (15) is fixedly connected to the top inner wall of the vertical cylinder (1), and the reverse flushing pipe (16) is arranged at the bottom of the granulation plate (8).

5. The biomass pellet granulator with self-cleaning function according to claim 1, characterized in that: A feed pump (18) is provided on the other side of the outer wall at the bottom of the vertical cylinder (1), and the discharge port of the feed pump (18) is fixedly connected to a feed pipe (19), and the outer wall of one end of the feed pipe (19) is fixedly connected to a tee pipe (20), and the outer walls of both ends of the tee pipe (20) are fixedly connected to the outer wall of the vertical cylinder (1) through flanges.

6. The biomass pellet granulator with self-cleaning function according to claim 1, characterized in that: A lower hopper (21) is provided on the outer wall of the bottom of the vertical cylinder (1), and a lower hopper (22) is welded at the center of the outer wall of the bottom of the lower hopper (21).

7. The biomass pellet granulator with self-cleaning function according to claim 1, characterized in that: Symmetrically distributed connecting plates (23) are welded between the bottom frame (7) and the lower hopper (21).

8. The biomass pellet granulator with self-cleaning function according to claim 6, characterized in that: A PLC controller (24) is installed on the outer wall of one side of the lower hopper (21), and the PLC controller (24) is connected to the conveying motor (6), the slitting motor (10), the water pump (12), the solenoid valve (17) and the feeding pump (18) through signal lines.

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