A biomass fuel pelletizing, molding, circulating and drying equipment

Abstract

The invention discloses a biomass fuel pelletizing and forming circulation drying equipment, which belongs to the technical field of biomass fuel pelletizing and forming. The equipment comprises a first bracket, a second bracket is arranged on one side of the first bracket, and a plurality of processing tanks for drying biomass pellet fuel are fixedly installed inside the first bracket and the second bracket. The water content of the biomass pellet fuel can be detected every minute through the cooperation of a driving motor, a connecting roller, a mounting pipe, a rotating block, a connecting strip, a supporting column, a movable plate, a rotating shaft, a supporting rod, a connecting frame, a connecting block, a moisture content detector, a needle, a processing tank, a supporting ring, a positioning block, a mounting rod and a spring. When the water content of the biomass pellet fuel is lower than 10%, the material will be unloaded and the drying will be stopped, so as to avoid the biomass pellet fuel from becoming brittle and carbonized due to excessive drying of the biomass pellet fuel, thereby achieving the drying effect of the biomass pellet fuel and facilitating the staff to dry the biomass pellet fuel.

Description

Technical Field

[0001] The invention relates to the field of biomass fuel granulation and molding, in particular to a biomass fuel granulation and molding circulation drying equipment. Background Art

[0002] With the increase in human demand for renewable energy and the improvement of environmental awareness, biomass fuel pelletizing technology has developed rapidly. The production of modern biomass pellet fuel usually includes raw material processing, crushing, pelletizing and other process flows, among which the pelletizing process mainly includes compression molding, extrusion molding, spray drying molding, etc. Biomass pellet fuel is actually the direct combustion of biomass energy and the processing and utilization of biomass. Direct combustion methods can be divided into four situations: stove combustion, boiler combustion, garbage combustion and solid fuel combustion. Among them, solid fuel combustion is a newly promoted technology. It solidifies the biomass and then uses traditional coal-fired equipment for combustion. Its advantages are that it makes full use of biomass energy to replace coal, reduces CO2 and SO2 emissions, is beneficial to environmental protection and controls greenhouse gas emissions, slows down climate change, and reduces the occurrence of natural disasters.

[0003] After searching, it is found that there are problems in the drying of biomass pellet fuel in the prior art. Although the biomass pellet fuel of the same batch has the same volume, the water content therein is different. The biomass pellet fuel with different water content is mixed together for drying, which may cause part of the biomass pellet fuel to be dried while the remaining part is not dried, and the drying is uneven. At the same time, during the drying process, the hot air of the hot air blower will increase the temperature inside the tank body. The rise in the temperature inside the tank body causes the water content of the biomass pellet fuel to continue to decrease. However, if the water content of the biomass pellet fuel is too low, the biomass pellet fuel may gradually become brittle and the surface of the biomass pellet fuel may be carbonized, which affects the subsequent use of the biomass pellet fuel. The temperature inside the tank body continues to rise, which also causes the biomass pellet fuel to burn during the drying process. This also reduces the safety of drying the biomass pellet fuel. In general, the drying effect of the biomass pellet fuel is poor, which affects the staff's drying of the biomass pellet fuel. Therefore, based on the above search and combined with the prior art, the present invention provides a biomass fuel granulation and forming circulation drying equipment to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a biomass fuel granulation forming circulation drying equipment which has the advantages of step-by-step drying of biomass pellet fuels with different moisture contents, preventing carbonization of biomass pellet fuels and having high safety, thereby solving the problems of uneven drying, easy carbonization and poor safety of biomass pellet fuels with different moisture contents during the drying process of biomass pellet fuels.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A biomass fuel pelletizing, forming and circulating drying equipment comprises a first bracket, a second bracket is arranged on one side of the first bracket, a plurality of processing tanks for drying biomass particle fuel are fixedly installed inside the first bracket and the second bracket, a plurality of second brackets perform step-drying on biomass particle fuels of different humidity from left to right, a hot air blower for providing hot air to the processing tank is fixedly installed on one side of the second bracket, a supporting barrel is fixedly sleeved on the inner circular wall surface of the air outlet of the hot air blower, a temperature measuring device for measuring the internal temperature of the processing tank is fixedly installed on one side of the processing tank, a discharge valve for discharging biomass particle fuel is fixedly installed on the outer circular wall surface of the processing tank, a drying mechanism for drying biomass particle fuel is arranged on one side of the second bracket, an exhaust mechanism for discharging moisture inside the processing tank is arranged on the outer circular wall surface of the processing tank, and a cooling mechanism for cooling the biomass particle fuel is arranged inside the first bracket.

[0007] Furthermore, the drying mechanism includes a conveyor belt, which is arranged on one side of the second bracket, and the conveyor belt is used to transport biomass particle fuel. A connecting pipe is fixedly installed at one end of the processing tank, and an air pump is fixedly sleeved inside the connecting pipe. The suction force of several air pumps increases from left to right. A support plate is fixedly installed on the outer circular wall of the processing tank, and a moisture content detector body is elastically connected to one side of the support plate. A needle is installed on the top surface of the moisture content detector body. A supporting hole is opened on the outer circular wall of the processing tank, and the outer circular wall of the needle is slidably connected to the inner circular wall of the support hole. A limiting frame for use with the needle is fixedly installed on the inner circular wall of the processing tank. A connecting block is fixedly installed on the bottom surface of the measuring instrument body, a mounting tube is fixedly installed on one side of the support plate, a movable plate is rotatably connected to the outer circular wall surface of the mounting tube, a connecting roller is rotatably connected to the inner circular wall surface of the mounting tube, a rotating block is fixedly installed on one end of the connecting roller, two connecting strips are fixedly installed on the outer circular wall surface of the rotating block, a supporting column is fixedly installed on one side of the movable plate, a driving motor for driving the connecting roller to rotate is fixedly installed on one side of the support plate, a supporting rod is rotatably connected to one side of the movable plate, a connecting frame is fixedly installed on the top surface of the support rod, the connecting frame is rotatably connected to the connecting block through a pin, an air intake pipe is fixedly installed on one end of the processing tank, and the air intake pipe is communicated with the supporting barrel.

[0008] Furthermore, the inner circular wall surface of the processing tank is rotatably connected to a support cylinder, one end of the air inlet pipe is rotatably connected to the support cylinder, the outer circular wall surface of the support cylinder is fixedly sleeved with an auger blade for stirring the biomass particle fuel, the outer circular wall surface of the support cylinder is fixedly installed with a plurality of air outlet boxes, the air outlet boxes are communicated with the support cylinder, and a servo motor for driving the support cylinder to rotate is fixedly installed at one end of the processing tank.

[0009] Furthermore, a plurality of connecting rods are fixedly mounted on the outer circular wall surface of the support tube, and a brush for scraping the biomass particle fuel on the inner wall of the processing tank is fixedly mounted on the top surface of the connecting rods.

[0010] Furthermore, the cooling mechanism includes a lower hopper, a screen for screening biomass particle fuel is fixedly installed on the inner bottom surface of the lower hopper, a vibration motor is fixedly installed on the bottom surface of the lower hopper, a support frame is fixedly installed on the top surface of the lower hopper, a mounting ring is rotatably connected to the inside of the support frame, a fan is rotatably connected to the inside of the mounting ring, and a locking member for locking the angle of the fan is provided on one side of the support frame.

[0011] Furthermore, the locking member includes a ratchet, and two rotating shafts are fixedly installed on the outer circular wall of the mounting ring. One end of the rotating shaft located on the left side passes through the support frame and is fixedly connected to one side of the ratchet. Two positioning rods are fixedly installed on one side of the support frame. The outer circular wall of the positioning rod is rotatably connected with a clamping block, and the clamping block is movably engaged with the teeth of the ratchet.

[0012] Furthermore, the exhaust mechanism includes a plurality of exhaust pipes, the top surface of the exhaust pipe is rotatably connected to a mounting frame, the interior of the mounting frame is fixedly sleeved with a filter for filtering water vapor inside the treatment tank, the top surface of the exhaust pipe is provided with a support pipe, the interior of the support pipe is rotatably connected with an exhaust fan for assisting in exhausting water vapor inside the treatment tank, a connecting hole is opened on the top surface of the support pipe, the inner circular wall surface of the connecting hole is movably sleeved with a limiting rod, and one end of the limiting rod is movably engaged with the mounting frame.

[0013] Furthermore, a positioning ring is fixedly sleeved on the outer circular wall surface of the air inlet pipe, and the outer circular wall of the positioning ring is fixedly connected to one end of the processing tank through a placement block.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. Through the cooperation of the transmission belt, air pump, connecting pipe, processing tank, hot air blower, supporting barrel and air inlet pipe, biomass pellet fuels with different moisture contents can be sucked into different processing tanks and dried, so as to carry out step-by-step drying of biomass pellet fuels, and improve the pertinence of drying biomass pellet fuels with different moisture contents. Through the cooperation of the driving motor, connecting roller, mounting pipe, rotating block, connecting strip, supporting column, movable plate, rotating shaft, supporting rod, connecting frame, connecting block, moisture content detector, needle, processing tank, supporting ring, positioning block, mounting rod and spring, With the cooperation, the moisture content of the biomass pellet fuel can be detected every minute. When the moisture content of the biomass pellet fuel is lower than 10%, the material will be unloaded and the drying will be stopped to avoid the biomass pellet fuel becoming brittle and carbonized due to over-drying. The temperature detector can monitor the temperature in the processing tank to avoid the biomass pellet fuel catching fire during the drying process due to excessive temperature inside the processing tank, thereby improving the safety of the biomass pellet fuel drying, achieving the drying effect of the biomass pellet fuel, and facilitating the staff to dry the biomass pellet fuel.

[0016] 2. The processing tank, hot air blower, support barrel, air inlet pipe, support tube, air outlet box, servo motor and auger blades are arranged to cooperate with each other, so that the hot air of the hot air blower flows out through the round hole on the air outlet box, and the support tube, auger blades and air outlet box stir the biomass pellet fuel in drying, so that the biomass pellet fuel can be stirred and dried at the same time, thereby improving the drying effect of the biomass pellet fuel and preventing the biomass pellet fuel from agglomerating during the drying process;

[0017] 3. The processing tank, discharge valve, vibration motor, lower hopper and screen cooperate with each other to screen the biomass pellet fuel. The mounting ring, fan, rotating shaft, block, positioning rod, torsion spring and ratchet cooperate with each other to rotate the mounting ring and fan inward to a suitable angle. The fan generates airflow to cool the dried biomass pellet fuel, thereby achieving a cooling effect on the biomass pellet fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a rear view schematic diagram of the exhaust pipe structure of the present invention;

[0020] Figure 3 It is a rear view schematic diagram of the support barrel structure of the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the local structure of A;

[0022] Figure 5It is a cross-sectional schematic diagram of the support tube structure of the present invention;

[0023] Figure 6 for Figure 5 Schematic diagram of the local structure of B;

[0024] Figure 7 It is a schematic diagram of the connecting rod structure of the present invention;

[0025] Figure 8 for Figure 7 Schematic diagram of the local structure of C;

[0026] Fig. 9 It is a schematic diagram of the support ring structure of the present invention;

[0027] Fig.10 for Fig. 9 Schematic diagram of the local structure of D;

[0028] Fig.11 It is a schematic diagram of the lower hopper structure of the present invention;

[0029] Fig.12 for Fig.11 Schematic diagram of the local structure of E;

[0030] Fig.13 It is a schematic diagram of the connecting column structure of the present invention.

[0031] In the figure: 1. first bracket; 2. treatment tank; 3. second bracket; 4. support pipe; 5. drying mechanism; 6. cooling mechanism; 7. exhaust mechanism; 8. temperature detector; 9. hot air blower; 10. support barrel; 11. connecting pipe; 12. air inlet pipe; 13. conveyor belt; 14. support frame; 15. exhaust pipe; 16. support cylinder; 17. auger blade; 18. air outlet box; 19. connecting hole; 20. limit rod; 21. air pump; 22. fixing ring; 23. servo motor; 24. discharge valve; 25. support plate; 26. connecting rod; 27. brush; 28. support hole; 29. ​​needle; 30. moisture content detector body; 31. connecting block; 32. connecting frame ; 33. Limiting frame; 34. Support rod; 35. Mounting hole; 36. Support ring; 37. Positioning block; 38. Mounting rod; 39. Spring; 40. Rotating shaft; 41. Driving motor; 42. Mounting tube; 43. Limiting ring; 44. Connecting roller; 45. Movable plate; 46. Rotating block; 47. Connecting strip; 48. Support column; 49. Lower hopper; 50. Vibrating motor; 51. Screen; 52. Support frame; 53. Mounting ring; 54. Fan; 55. Rotating shaft; 56. Ratchet; 57. Block; 58. Positioning rod; 59. Torsion spring; 60. Mounting frame; 61. Connecting column; 62. Filter; 63. Exhaust fan; 64. Positioning ring; 65. Placement block. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Example 1: Please refer to Figure 1 - Fig.10 A biomass fuel pelletizing, forming and circulating drying equipment comprises a first bracket 1, a second bracket 3 is arranged on one side of the first bracket 1, a plurality of processing tanks 2 for drying biomass pellet fuel are fixedly installed inside the first bracket 1 and the second bracket 3, the processing tanks 2 are connected to the first bracket 1 and the second bracket 3 through a connecting piece, the first bracket 1 and the second bracket 3 can support a plurality of processing tanks 2, and a plurality of reinforcing beams are fixedly installed between the first bracket 1 and the second bracket 3;

[0034] Several second brackets 3 perform step-drying of biomass pellet fuels of different humidity from left to right. A hot air blower 9 for providing hot air to the processing tank 2 is fixedly installed on one side of the second bracket 3. A support barrel 10 is fixedly sleeved on the inner circular wall surface of the air outlet of the hot air blower 9. The support barrel 10 is a hollow cylindrical structure with one end open. A temperature measuring device 8 for measuring the internal temperature of the processing tank 2 is fixedly installed on one side of the processing tank 2;

[0035] A discharge valve 24 for discharging biomass pellet fuel is fixedly installed on the outer circumferential wall of the processing tank 2, a drying mechanism 5 for drying biomass pellet fuel is arranged on one side of the second bracket 3, a steam exhaust mechanism 7 for discharging moisture inside the processing tank 2 is arranged on the outer circumferential wall of the processing tank 2, and a cooling mechanism 6 for cooling the biomass pellet fuel is arranged inside the first bracket 1;

[0036] The drying mechanism 5 includes a conveyor belt 13, which is arranged on one side of the second bracket 3. The bottom surfaces of the brackets on both sides of the conveyor belt 13 are fixedly installed with support frames 14. The support frames 14 are triangular and have strong stability. The conveyor belt 13 is used to transport biomass particle fuel. One side of the support frame 14 is fixedly connected to one side of the second bracket 3. The two support frames 14 can support the conveyor belt 13;

[0037] A connecting pipe 11 is fixedly installed at one end of the processing tank 2, and an air pump 21 is fixedly sleeved inside the connecting pipe 11. The suction of the multiple air pumps 21 increases from left to right. The staff sets different suctions for the multiple air pumps 21 so that the air pumps 21 cooperate with the connecting pipe 11 to suck the biomass pellet fuels of different weights on the conveyor belt 13 into different processing tanks 2 (the higher the water content, the heavier the weight under the same volume). A support plate 25 is fixedly installed on the outer circumferential wall of the processing tank 2, and a moisture content detector body 30 is elastically connected to one side of the support plate 25. A thorn needle 29 is installed on the top surface of the moisture content detector body 30. A support hole 28 is opened on the outer circumferential wall of the processing tank 2, and the outer surface of the thorn needle 29 is provided with a support hole 28. The circular wall surface is slidably connected with the inner circular wall surface of the support hole 28, and a limiting frame 33 for use with the pricking needle 29 is fixedly installed on the inner circular wall surface of the treatment tank 2. A mounting hole 35 is opened on one side of the support plate 25, and two mounting rods 38 are fixedly installed inside the mounting hole 35. A supporting ring 36 is fixedly sleeved on the outer circular wall surface of the pricking needle 29, and a positioning block 37 is fixedly installed on the outer circular wall surface of the support ring 36. The positioning block 37 enters the interior of the mounting hole 35, and the positioning block 37 is slidably connected with the mounting rod 38. A spring 39 is movably sleeved on the outer circular wall surface of the mounting rod 38, and one end of the spring 39 is fixedly connected to the bottom surface of the positioning block 37, and the other end of the spring 39 is fixedly connected to the inner bottom surface of the mounting hole 35;

[0038] A connecting block 31 is fixedly installed on the bottom surface of the moisture content detector body 30, and a mounting tube 42 is fixedly installed on one side of the support plate 25. The mounting tube 42 penetrates the support plate 25 and extends to the outside of the support plate 25. Two limiting rings 43 are fixedly sleeved on the outer circumferential wall surface of the mounting tube 42. A movable plate 45 is rotatably connected between the two limiting rings 43. The movable plate 45 rotates around the mounting tube 42 under the restriction of the two limiting rings 43. A connecting roller 44 is rotatably connected to the inner circumferential wall surface of the mounting tube 42. A rotating block 46 is fixedly installed on one end of the connecting roller 44. Two connecting strips 47 are fixedly installed on the outer circumferential wall surface of the rotating block 46. A support column 48 is fixedly installed on one side of the movable plate 45, and the support column 48 is within the rotation range of the connecting bar 47. A driving motor 41 for driving the connecting roller 44 to rotate is fixedly installed on one side of the support plate 25. The driving shaft of the driving motor 41 enters the interior of the mounting tube 42 and is fixedly connected to one end of the connecting roller 44. A support rod 34 is rotatably connected to one side of the movable plate 45. A rotating shaft 40 is fixedly installed on one side of the movable plate 45. The movable plate 45 is rotatably connected to the support rod 34 through the rotating shaft 40. A connecting frame 32 is fixedly installed on the top surface of the support rod 34. The connecting frame 32 is rotatably connected to the connecting block 31 through a pin.

[0039] An air inlet pipe 12 is fixedly installed at one end of the processing tank 2, and the air inlet pipe 12 is connected to the support barrel 10. A PLC controller is fixedly installed on one side of the first bracket 1, and the temperature meter 8, the hot air blower 9, the conveyor belt 13, the discharge valve 24, the moisture content detector body 30 and the drive motor 41 are all electrically connected to the PLC controller;

[0040] Through the above technical features, through the set conveyor belt 13, the staff pours the biomass pellet fuel that needs to be dried on the left end of the conveyor belt 13, so that the biomass pellet fuel is transported forward from left to right along the conveyor belt 13. Through the set air pump 21, the staff sets the suction of multiple air pumps 21 respectively, so that the suction of multiple air pumps 21 gradually increases from left to right. The staff starts the air pump 21, and the air pump 21 generates suction to suck the biomass pellet fuel into the processing tank 2 through the connecting pipe 11. The greater the water content of the biomass pellet fuel at the same volume, the greater the weight, and the different suctions of multiple air pumps 21 make the biomass pellet fuel with lighter weight (lower water content) The pellet fuel will enter the processing tank 2 on the far left, the biomass pellet fuel with the second heaviest weight (the second highest water content) will enter the processing tank 2 in the middle, and the heaviest weight (the highest water content) will enter the processing tank 2 on the far right. At the same time, the hot air blower 9 will be started, and the hot air blower 9 will enter the inside of the support barrel 10. The hot air entering the inside of the support barrel 10 will enter the processing tank 2 through multiple air inlet pipes 12. Biomass pellet fuels with different water contents will enter multiple different processing tanks 2 for drying, thereby performing step-by-step drying on the biomass pellet fuels, thereby improving the pertinence of drying biomass pellet fuels with different water contents;

[0041] When the biomass pellet fuel is dried inside the processing tank 2, the staff sets the drive motor 41 to start once per minute, and the drive shaft of the drive motor 41 rotates clockwise to drive the connecting roller 44 to rotate inside the mounting tube 42, and the connecting roller 44 rotates clockwise to drive the rotating block 46 to rotate, and the rotating block 46 rotates to drive the connecting strip 47 to rotate, and the connecting strip 47 rotates to abut against the support column 48, and the connecting strip 47 continues to rotate to drive the support column 48 to rotate outward, and the support column 48 rotates outward to drive the movable plate 45 on the mounting tube 42 to rotate outward, and the movable plate 45 rotates to The outer rotation drives the support rod 34 to rotate outward through the rotating shaft 40, and the outward rotation of the support rod 34 drives the connecting frame 32 to move outward. The outward movement of the connecting frame 32 drives the connecting block 31 to move downward through the pin, and the downward movement of the connecting block 31 drives the moisture content detector body 30 and the thorn needle 29 to move downward. The thorn needle 29 moves downward inside the support hole 28 on the processing tank 2, driving the support ring 36 and the positioning block 37 to move downward. The positioning block 37 moves downward along the mounting rod 38 and compresses the spring 39 at the same time, and the biomass pellet fuel is in the processing tank 2. When the part is stirred and dried, part of the biomass pellet fuel will enter the interior of the limiting frame 33. At the same time, the connecting strip 47 continues to rotate, so that the connecting strip 47 is separated from the support column 48. At this time, the force of the spring 39 causes the positioning block 37 to drive the support ring 36 and the thorn needle 29 to move upward. The thorn needle 29 moves upward inside the support hole 28 so that the tip of the thorn needle 29 pierces the interior of the biomass pellet fuel with the cooperation of the limiting frame 33. When the thorn needle 29 moves downward in the support hole 28 again, the biomass pellet fuel on the thorn needle 29 will be squeezed by the thorn needle 29 under the pressure of the processing tank 2. 9 separation, the needle 29 and the moisture content detector body 30 can detect the moisture content of the biomass pellet fuel. When the moisture content of the biomass pellet fuel is lower than 10%, a signal will be transmitted to the PLC controller. After receiving the signal, the PLC controller will open the discharge valve 24, so that the biomass pellet fuel dried inside the processing tank 2 is discharged through the discharge valve 24. The time required for the biomass pellet fuel is determined by detecting the moisture content of the biomass pellet fuel, so as to avoid the biomass pellet fuel from becoming brittle and carbonized due to over-drying of the biomass pellet fuel.

[0042] During the drying process of biomass pellet fuel, the thermometer 8 on the processing tank 2 can monitor the temperature in the processing tank 2. When the temperature inside the processing tank 2 exceeds ninety degrees Celsius, a signal will be transmitted to the PLC controller. After receiving the signal, the PLC controller will cut off the power to the hot air blower 9 to stop the delivery of hot air. If the thermometer 8 detects that the temperature inside the processing tank 2 is lower than seventy degrees Celsius, the hot air blower 9 will be restarted through the PLC controller to avoid the biomass pellet fuel catching fire during the drying process due to excessive temperature inside the processing tank 2, thereby improving the safety of the biomass pellet fuel, achieving the drying effect of the biomass pellet fuel, and facilitating the staff to dry the biomass pellet fuel.

[0043] Example 2: Please refer to Figure 1 - Figure 7 , a biomass fuel pelletizing, forming and circulating drying equipment, which is different from Example 1 in that the inner circular wall surface of the first bracket 1 is rotatably connected with a support tube 16, and the support tube 16 is a hollow cylindrical structure. One end of the air intake pipe 12 is rotatably connected with the support tube 16, and one end of the air intake pipe 12 passes through the support tube 16 and extends to the inside of the support tube 16. The outer circular wall surface of the air intake pipe 12 is fixedly sleeved with a fixing ring 22 for limiting the position of the air intake pipe 12, and the outer circular wall surface of the fixing ring 22 is rotatably connected with the inner circular wall surface of the support tube 16;

[0044] The outer circumferential wall surface of the support tube 16 is fixedly sleeved with an auger blade 17 for stirring the biomass pellet fuel. The auger blade 17 can not only stir the biomass pellet fuel but also transport the biomass pellet fuel outward. The outer circumferential wall surface of the support tube 16 is fixedly installed with a plurality of air outlet boxes 18. The air outlet boxes 18 are hollow cylindrical structures with one end open. The air outlet boxes 18 are connected to the support tube 16. The outer circumferential wall surface of the air outlet box 18 is provided with a plurality of circular holes for releasing hot air. The hot air from the hot air blower 9 enters into the plurality of air inlet pipes 12 through the support barrel 10. The hot air entering the air inlet pipe 12 enters into the processing tank 2 through the air outlet boxes 18 on the support tube 16.

[0045] A servo motor 23 for driving the support cylinder 16 to rotate is fixedly installed at one end of the processing tank 2. One end of the output shaft of the servo motor 23 passes through the processing tank 2 and is fixedly connected to one end of the support cylinder 16. The servo motor 23 is electrically connected to the PLC controller.

[0046] Specifically, through the processing tank 2 that is set, when the biomass pellet fuel is in the processing tank 2 for drying, the hot air generated by the hot air blower 9 enters the interior of the support tube 16 through the support barrel 10 and multiple air inlet pipes 12, and the hot air entering the support tube 16 will flow out through the circular holes on the outer wall of multiple air outlet boxes 18 on the support tube 16. At the same time, the staff starts the servo motor 23, and the driving shaft of the servo motor 23 rotates to drive the support tube 16 to rotate. The rotation of the support tube 16 drives the auger blades 17 and multiple air outlet boxes 18 to rotate. The auger blades 17 can stir the biomass pellet fuel and transport the biomass pellet fuel outward. The air outlet box 18 continuously flows out hot air during the process of stirring the biomass pellet fuel, so as to achieve the biomass pellet fuel while being stirred and dried, thereby improving the drying effect of the biomass pellet fuel and avoiding the biomass pellet fuel from agglomerating during the drying process;

[0047] A plurality of connecting rods 26 are fixedly installed on the outer circular wall surface of the support tube 16, and a brush 27 for scraping the biomass particle fuel on the inner wall of the processing tank 2 is fixedly installed on the top surface of the connecting rod 26. Through the setting of the support tube 16, the rotation of the support tube 16 will drive the brush 27 to rotate, and the rotation of the brush 27 will drive the brush 27 to rotate along the inner wall of the processing tank 2. The brush 27 can clean the inner wall of the processing tank 2 to prevent part of the biomass particle fuel from adhering to the inner wall of the processing tank 2.

[0048] Example 3: Please refer to Figure 1 - Fig.13 , a biomass fuel pelletizing, forming and circulating drying equipment, which is different from Example 1 in that the cooling mechanism 6 includes a lower hopper 49, the lower hopper 49 is fixedly installed inside the first bracket 1, and a screen 51 for screening biomass pellet fuel is fixedly installed on the inner bottom surface of the lower hopper 49, and a vibration motor 50 is fixedly installed on the bottom surface of the lower hopper 49. The vibration of the vibration motor 50 drives the lower hopper 49 and the screen 51 to vibrate to screen the broken slag of the biomass pellet fuel, and a support frame 52 is fixedly installed on the top surface of the lower hopper 49, and a mounting ring 53 is rotatably connected inside the support frame 52, and a fan 54 is rotatably connected inside the mounting ring 53, and the vibration motor 50 and the fan 54 are both electrically connected to the PLC controller, and a locking member for locking the angle of the fan 54 is provided on one side of the support frame 52;

[0049] Specifically, through the processing tank 2, the biomass pellet fuel dried inside the processing tank 2 will fall onto the lower hopper 49 through the discharge valve 24, and the biomass pellet fuel will roll downward along the inclined surface of the lower hopper 49 to the screen 51. The staff starts the vibration motor 50, and the vibration of the vibration motor 50 drives the screen 51 and the biomass pellet fuel to vibrate. The vibration of the biomass pellet fuel causes the fragments of the biomass pellet fuel to fall through the screen 51. At the same time, the staff rotates the mounting ring 53 and the fan 54 to a suitable angle, and the fan 54 generates an airflow to blow onto the biomass pellet fuel, thereby reducing the temperature of the biomass pellet fuel.

[0050] The locking member includes a ratchet 56, which is rotatably connected to one side of the support frame 52. Two rotating shafts 55 are fixedly installed on the outer circumferential wall of the mounting ring 53. One end of the rotating shaft 55 on the left side passes through the support frame 52 and is fixedly connected to one side of the ratchet 56. The rotating shaft 55 on the right side is rotatably connected to the support frame 52 through a bearing. Two positioning rods 58 are fixedly installed on one side of the support frame 52. A clamping block 57 is rotatably connected to the outer circumferential wall of the positioning rod 58. The clamping block 57 is movably engaged with the teeth of the ratchet 56. A torsion spring 59 is sleeved on the outer circumferential wall of the positioning rod 58. The clamping block 57 is elastically connected to the positioning rod 58 through the torsion spring 59.

[0051] Specifically, through the provided mounting ring 53, the staff rotates the mounting ring 53 and the fan 54 inwardly to drive the rotating shaft 55 to rotate, and the rotating shaft 55 rotates to drive the clamping block 57 to rotate outward along the positioning rod 58 while causing the torsion spring 59 to twist. When the staff rotates the mounting ring 53 and the fan 54 inwardly to a suitable angle, the force of the torsion spring 59 causes the clamping block 57 to be clamped between the teeth of the ratchet 56, thereby determining the angle of the mounting ring 53 and the fan 54, thereby achieving a locking effect on the angle of the fan 54;

[0052] The steam exhaust mechanism 7 includes a plurality of exhaust pipes 15, which are respectively fixedly mounted on the outer circumferential walls of the plurality of treatment tanks 2. The top surface of the exhaust pipe 15 is rotatably connected with a mounting frame 60. A filter screen 62 and a connecting column 61 are fixedly sleeved inside the mounting frame 60 for filtering the water vapor inside the treatment tank 2. The top surface of the exhaust pipe 15 is provided with a support pipe 4. An exhaust fan 63 for assisting in discharging the water vapor inside the treatment tank 2 is rotatably connected inside the support pipe 4. A connecting column 61 is fixedly mounted on the top surface of the exhaust pipe 15. The mounting frame 60 is rotatably connected to the connecting column 61. The top surface of the connecting column 61 is fixedly connected to the bottom surface of the support pipe 4. A connecting hole 19 is provided on the top surface of the support pipe 4. A limiting rod 20 is movably sleeved on the inner circumferential wall surface of the connecting hole 19. One end of the limiting rod 20 is movably engaged with the mounting frame 60. A circular groove is provided on the top surface of the mounting frame 60. One end of the limiting rod 20 is movably engaged with the circular groove.

[0053] Specifically, through the processing tank 2, water vapor will be generated when the biomass pellet fuel is dried inside the processing tank 2. The staff starts the exhaust fan 63, and the exhaust fan 63 rotates to discharge the water vapor inside the processing tank 2 through the exhaust pipe 15. The water vapor discharged through the exhaust pipe 15 will pass through the filter screen 62 in the installation frame 60. The filter screen 62 can filter the biomass pellet fuel dust in the water vapor to prevent the biomass pellet fuel dust from entering the air.

[0054] The connecting column 61 may be clogged with dust after long-term use. The staff will move the limit rod 20 upward so that the lower end of the limit rod 20 is separated from the circular groove on the mounting frame 60, and then the staff will rotate the mounting frame 60 outward to drive the filter 62 to rotate to a position outside the exhaust pipe 15 and the support pipe 4, so as to clean the dust on the filter 62. After cleaning the filter 62, the staff will reset the mounting frame 60, so that the filter 62 continues to filter the dust in the water vapor inside the treatment tank 2, so as to achieve the effect of discharging the water vapor inside the treatment tank 2;

[0055] The outer circumferential wall of the air inlet pipe 12 is fixedly sleeved with a positioning ring 64, and the outer circumferential wall of the positioning ring 64 is fixedly connected to one end of the processing tank 2 through a placement block 65. The outer circumferential wall of the positioning ring 64 is fixedly installed with a placement block 65, and one side of the placement block 65 is fixedly connected to one end of the processing tank 2;

[0056] Specifically, by providing the positioning ring 64 and the placement block 65 , the positioning ring 64 and the placement block 65 can support the air intake pipe 12 to prevent the air intake pipe 12 from shaking.

[0057] Working principle: Through the provided conveyor belt 13, the staff pours the biomass pellet fuel onto the conveyor belt 13, and the conveyor belt 13 can convey the biomass pellet fuel forward. During the conveying of the biomass pellet fuel on the conveyor belt 13, the staff starts the air pump 21, and the air pump 21 generates suction to suck the biomass pellet fuel into the processing tank 2 through the connecting pipe 11. Since the suction forces of the multiple air pumps 21 are different, the biomass pellet fuels with different water contents enter the multiple processing tanks 2 respectively under the action of the connecting pipe 11 and the air pump 21;

[0058] Secondly, the staff starts the hot air blower 9, which conveys the hot air into the interior of the support barrel 10. The hot air inside the support barrel 10 enters the interior of the multiple processing tanks 2 through the multiple air inlet pipes 12 respectively, and the hot air flows out from the circular holes on the multiple air outlet boxes 18 through the air inlet pipes 12 and the support barrel 16. At the same time, the driving shaft of the servo motor 23 rotates to drive the support barrel 16 and the auger blades 17 to rotate and stir the biomass pellet fuel. The rotation of the support barrel 16 and the auger blades 17 will also drive the air outlet box 18 to rotate, so as to achieve drying and stirring of the biomass pellet fuel;

[0059] Next, during the drying process of the biomass pellet fuel, the needle 29 on the moisture content detector body 30 will penetrate into the biomass pellet fuel every minute under the drive of the drive motor 41, so as to detect the moisture content of the biomass pellet fuel. When the moisture content of the biomass pellet fuel is lower than 10%, the PLC controller will open the discharge valve 24, so that the dried biomass pellet fuel in the processing tank 2 is discharged through the discharge valve 24;

[0060] Finally, the dried biomass pellet fuel will fall onto the lower hopper 49. The vibration motor 50 and the screen 51 on the lower hopper 49 can cooperate to screen the biomass pellet fuel, and the fan 54 can cool the dried biomass pellet fuel, making it easier for the staff to use the biomass pellet fuel later.

[0061] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A biomass fuel pelletizing, forming and circulating drying equipment, characterized in that: include: A first bracket (1), a second bracket (3) is arranged on one side of the first bracket (1), a plurality of processing tanks (2) for drying biomass pellet fuel are fixedly installed inside the first bracket (1) and the second bracket (3), a plurality of the second brackets (3) perform stepwise drying of biomass pellet fuel with different humidity from left to right, a hot air blower (9) for providing hot air to the processing tank (2) is fixedly installed on one side of the second bracket (3), a support barrel (10) is fixedly sleeved on the inner circular wall surface of the air outlet of the hot air blower (9), the A temperature measuring device (8) for measuring the internal temperature of the processing tank (2) is fixedly mounted on one side of the processing tank (2); a discharge valve (24) for discharging biomass pellet fuel is fixedly mounted on the outer circumferential wall surface of the processing tank (2); a drying mechanism (5) for drying the biomass pellet fuel is arranged on one side of the second bracket (3); a steam exhaust mechanism (7) for discharging moisture inside the processing tank (2) is arranged on the outer circumferential wall surface of the processing tank (2); and a cooling mechanism (6) for cooling the biomass pellet fuel is arranged inside the first bracket (1); The drying mechanism (5) comprises a conveyor belt (13), the conveyor belt (13) being arranged on one side of the second bracket (3), the conveyor belt (13) being used to convey biomass pellet fuel, a connecting pipe (11) being fixedly mounted on one end of the processing tank (2), an air pump (21) being fixedly sleeved inside the connecting pipe (11), the suction force of a plurality of the air pumps (21) increasing from left to right, a supporting plate (25) being fixedly mounted on the outer circular wall surface of the processing tank (2), a moisture content detector body (30) being elastically connected to one side of the supporting plate (25), and a top surface of the moisture content detector body (30) being mounted The treatment tank (2) comprises a pricking needle (29), an outer circumferential wall surface of the treatment tank (2) is provided with a support hole (28), the outer circumferential wall surface of the pricking needle (29) is slidably connected to the inner circumferential wall surface of the support hole (28), a limiting frame (33) for use with the pricking needle (29) is fixedly mounted on the inner circumferential wall surface of the treatment tank (2), a connecting block (31) is fixedly mounted on the bottom surface of the moisture content detector body (30), a mounting tube (42) is fixedly mounted on one side of the support plate (25), a movable plate (45) is rotatably connected to the mounting tube (42), a connecting roller (44) is rotatably connected to the inner circumferential wall surface of the mounting tube (42), and the connecting roller ( A rotating block (46) is fixedly mounted on one end of the rotating block (44), two connecting strips (47) are fixedly mounted on the outer circumferential wall surface of the rotating block (46), a supporting column (48) is fixedly mounted on one side of the movable plate (45), a driving motor (41) for driving the connecting roller (44) to rotate is fixedly mounted on one side of the supporting plate (25), a supporting rod (34) is rotatably connected to one side of the movable plate (45), a connecting frame (32) is fixedly mounted on the top surface of the supporting rod (34), the connecting frame (32) is rotatably connected to the connecting block (31) via a pin, an air inlet pipe (48) is fixedly mounted on one end of the processing tank (2), and a connecting frame (32) is fixedly mounted on one end of the processing tank (2). 12), the air inlet pipe (12) is connected to the support barrel (10), the inner circular wall surface of the processing tank (2) is rotatably connected to a support cylinder (16), one end of the air inlet pipe (12) is rotatably connected to the support cylinder (16), the outer circular wall surface of the support cylinder (16) is fixedly sleeved with an auger blade (17) for stirring biomass particle fuel, the outer circular wall surface of the support cylinder (16) is fixedly mounted with a plurality of air outlet boxes (18), the air outlet boxes (18) are connected to the support cylinder (16), and one end of the processing tank (2) is fixedly mounted with a servo motor (23) for driving the support cylinder (16) to rotate.

2. The biomass fuel granulation, molding and circulation drying equipment according to claim 1 is characterized in that: A plurality of connecting rods (26) are fixedly mounted on the outer circular wall surface of the support cylinder (16), and a brush (27) for scraping the biomass particle fuel on the inner wall of the processing tank (2) is fixedly mounted on the top surface of the connecting rod (26).

3. The biomass fuel granulation, molding and circulation drying equipment according to claim 1 is characterized in that: The cooling mechanism (6) comprises a lower hopper (49), a screen (51) for screening biomass pellet fuel being fixedly mounted on the inner bottom surface of the lower hopper (49), a vibration motor (50) being fixedly mounted on the bottom surface of the lower hopper (49), a support frame (52) being fixedly mounted on the top surface of the lower hopper (49), a mounting ring (53) being rotatably connected to the interior of the support frame (52), a fan (54) being rotatably connected to the interior of the mounting ring (53), and a locking member for locking the angle of the fan (54) being provided on one side of the support frame (52).

4. The biomass fuel granulation, molding and circulation drying equipment according to claim 3 is characterized in that: The locking member comprises a ratchet (56); two rotating shafts (55) are fixedly mounted on the outer circumferential wall surface of the mounting ring (53); one end of the rotating shaft (55) on the left side passes through the support frame (52) and is fixedly connected to one side of the ratchet (56); two positioning rods (58) are fixedly mounted on one side of the support frame (52); a clamping block (57) is rotatably connected to the outer circumferential wall surface of the positioning rod (58); and the clamping block (57) is movably engaged with the teeth of the ratchet (56).

5. The biomass fuel granulation, molding and circulation drying equipment according to claim 1 is characterized in that: The exhaust mechanism (7) comprises a plurality of exhaust pipes (15), the top surface of the exhaust pipe (15) being rotatably connected to a mounting frame (60), the interior of the mounting frame (60) being fixedly sleeved with a filter screen (62) for filtering water vapor inside the processing tank (2), the top surface of the exhaust pipe (15) being provided with a support pipe (4), the interior of the support pipe (4) being rotatably connected to an exhaust fan (63) for assisting in exhausting water vapor inside the processing tank (2), the top surface of the support pipe (4) being provided with a connecting hole (19), the inner circular wall surface of the connecting hole (19) being movably sleeved with a limiting rod (20), one end of the limiting rod (20) being movably engaged with the mounting frame (60).

6. The biomass fuel granulation, molding and circulation drying equipment according to claim 2 is characterized in that: A positioning ring (64) is fixedly sleeved on the outer circular wall surface of the air inlet pipe (12), and the outer circular wall of the positioning ring (64) is fixedly connected to one end of the processing tank (2) via a placement block (65).

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