Biomass mixing equipment

Abstract

The invention relates to the technical field of mixing equipment, in particular to biomass mixing equipment which comprises a base, a mixing tank and a screw conveyor, the screw conveyor continuously pumps biomass materials to be mixed from bottom to top, the mixing tank comprises an outer layer and an inner layer, and the outer layer and the inner layer are arranged on the base. A plurality of layers of electric heating wires are arranged between the outer layer and the inner layer at intervals from top to bottom, a feeding channel is arranged between every two adjacent electric heating wires, and a feeding port and a discharging port are formed in the two ends of each feeding channel respectively. Compared with a traditional method, according to the technical scheme, the screw conveyor is matched with the stop valve, materials can be regularly and directly added into the tank body from different heights of the material mixing tank, the mixing uniformity is improved, the mixing process can be adjusted according to actual needs, the operation flexibility and the mixing efficiency are improved, and the practicability is high. And meanwhile, the biomass material with relatively high water content can be dried by the electric heating wire in the adding process, so that the probability of material aggregation or caking is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of mixing equipment, in particular to a biomass mixing equipment. Background Art

[0002] Biomass mixing equipment plays an important role in the utilization of biomass energy. Biomass mixing equipment is mainly used to mix biomass of different types, humidity and energy to achieve the purpose of reducing humidity, improving combustion efficiency, reducing emissions and saving costs.

[0003] Patent document with patent announcement number: CN112358901B discloses an integrated mixed drying biomass pellet forming equipment, including a box body, a hollow cylindrical rotating seat and a feed chamber are arranged on the upper part of the partition of the box body, the inner wall of the rotating seat is provided with a feed blade, the outer wall of the rotating seat is provided with a lifting blade and a horizontal stirring rod in sequence from top to bottom, an arc block is provided between the cylindrical rotating seat and the feed chamber, the bottom of the storage space of the arc block is connected to the feed chamber, and the storage space of the arc block is provided with a lifting screw rod. The biomass pellet forming equipment in the present invention is used for granulating biomass pellets, and can complete multiple processes such as secondary stirring, drying, feeding and cooling in the processing of biomass pellets, and realizes energy sharing of multiple functions in this process, which can replace existing equipment in the actual production of biomass pellets and save equipment costs.

[0004] Although the above equipment can dry the materials before mixing, on the one hand, the energy for drying comes from the heat of the biomass particles themselves, which may not meet the requirements of effective drying; on the other hand, the materials are uniformly collected in the insulation chamber waiting for drying. When the materials are in a piled state, the drying effect of the materials in the lower layer is bound to be poor, and the purpose of uniform mixing cannot be achieved subsequently. Summary of the Invention

[0005] In order to overcome the above technical problems, the purpose of the present invention is to provide a biomass mixing device, which solves the problem that biomass materials with high water content are prone to agglomerates or lumps during mixing, thereby affecting the overall uniformity of the biomass material mixture and the subsequent processing efficiency.

[0006] The purpose of the present invention can be achieved through the following technical solutions: A biomass mixing device comprises a base, a mixing tank and a screw conveyor, wherein the screw conveyor continuously pumps the biomass material to be mixed from bottom to top, the mixing tank comprises an outer layer and an inner layer, multiple layers of electric heating wires are arranged between the outer layer and the inner layer from top to bottom, a feeding channel is provided between adjacent electric heating wires, and an inlet and a discharge port are respectively provided at both ends of the feeding channel, wherein the inlet is connected to the material output port of the screw conveyor, and the discharge port is connected to the interior of the inner layer; A stop valve and a diaphragm valve are also provided at the connection position between the feed port and the output port of the screw conveyor. The diaphragm valve is used to connect the high-pressure gas and push the material into the inner layer along the feeding channel. The stop valve is used to control the flow rate and timing of the material entering the feeding channel. The top of the mixing tank is rotatably connected to a flip cover, and a mixing component is provided under the flip cover. After being acted upon by a driving force, the mixing component continuously rotates and mixes the dried materials in the inner layer.

[0007] Furthermore, a bottom plate is connected above the base via a support, and the mixing tank is installed above the bottom plate; One end of a fixed bracket is connected to the edge of the bottom plate, the other end of the fixed bracket extends upward along the body of the mixing tank and is rotatably connected to one end of a cylinder, the output end of the cylinder is rotatably connected to one end of a movable bracket, the middle part of the movable bracket is rotatably connected to the top edge of the mixing tank, and the other end of the movable bracket is fixedly connected to the flip cover.

[0008] Furthermore, the feeding channel is an annular hollow structure, and the feeding channel further includes any one or more of AD: A. The discharge port of the feeding channel is rotatably connected with a one-way flap; B. The bottom surface of the inner cavity of the feeding channel is formed with multiple steps of different heights along its extension direction; C. A plurality of protrusions are formed on the inner cavity side and top surface of the feeding channel; D. The portion of the feeding channel corresponding to the portion between the feed port and the discharge port is in an inclined state, and the level of the feed port is higher than that of the discharge port.

[0009] Furthermore, the screw conveyor includes a feeding cylinder and a feeding motor located at one end of the feeding cylinder, the feeding cylinder is a hollow cylinder, a screw rod is rotatably arranged inside the feeding cylinder, and the output end of the feeding motor is transmission-connected to the screw rod; A pushing port is provided on the barrel of the feeding barrel corresponding to the feeding port. The pushing port is connected to a pushing channel via a stop valve, and the pushing channel is communicated with the feeding port.

[0010] Furthermore, the inner diameter of the pushing channel tends to gradually expand from the pushing port to the feeding port; the outer portion of the pushing channel is provided with a hollow drainage tube matching its outer diameter, a cavity for accommodating high-pressure gas is formed inside the hollow drainage tube, the output end of the diaphragm valve is connected to the hollow drainage tube, and the input end of the diaphragm valve is connected to an air supply device; an air outlet is formed through the side wall of the pushing channel at a position corresponding to the hollow drainage tube, the air outlet is connected to the inner cavity of the hollow drainage tube, and the air outlet is arranged at an angle.

[0011] Furthermore, the mixing assembly includes a main shaft, the shaft body of the main shaft is provided with connecting disks and mixing pieces at intervals from top to bottom, a plurality of slave shafts are provided at equal angles between the connecting disks and the mixing pieces, and the shaft body of the slave shaft is provided with stirring blades at positions corresponding to the positions where the discharge port is connected to the inner layer.

[0012] Furthermore, the mixing piece includes upper and lower rings spaced apart, an annular screen is connected between the two rings, a fixed plate is provided inside the annular screen, a slot for inserting the main shaft is provided in the middle of the fixed plate, a plurality of inner blades are circumferentially spaced apart on the edge of the fixed plate, a plurality of outer blades are circumferentially spaced apart between the two rings at positions corresponding to the outer edges of the annular screen, and pins are inserted from bottom to top in the rings corresponding to the slave shaft.

[0013] Furthermore, the invention further comprises a temperature sensor, wherein a contact of the temperature sensor is inserted into the inner layer.

[0014] Furthermore, it also includes an exhaust gas collection component, which includes a centrifugal fan and an air collecting tank. The suction end of the centrifugal fan is connected to the interior of the inner layer through an air intake pipe, and the exhaust end of the centrifugal fan extracts water vapor and exhaust gas from the inner layer through an air outlet pipe and stores them in the air collecting tank.

[0015] Furthermore, a feeding port and a feeding cylinder are provided on the top of the flip cover. The feeding port is used to feed relatively dry materials to be mixed. An electronic valve is installed at the bottom opening of the feeding cylinder. The feeding cylinder is used to feed the catalyst at a fixed time and in a fixed quantity.

[0016] Beneficial effects of the present invention: Compared with the traditional method, this technical solution uses a screw conveyor in conjunction with a stop valve to regularly add materials from different heights of the mixing tank directly into the tank body, which not only improves the uniformity of mixing, but also can adjust the mixing process according to actual needs, thereby improving operational flexibility and mixing efficiency. At the same time, biomass materials with a high water content will also be dried by the electric heating wire during the addition process, reducing the chance of material aggregation or caking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a stereoscopic view of the front side of the present invention; Figure 2 is a side view of the present invention; Figure 3 This is a three-dimensional view of the mixing tank of the present invention with the outer layer hidden; Figure 4 It is a three-dimensional view of the screw conveyor of the present invention; Figure 5 It is a three-dimensional view of the push channel and the diaphragm valve in the present invention; Figure 6 It is a three-dimensional view of the feeding channel in the present invention; Figure 7 is a cross-sectional view of the feeding channel in the present invention; Figure 8 It is a three-dimensional view of the back of the present invention; Figure 9 This is a three-dimensional view of the present invention after the flip cover is hidden; Figure 10 is a three-dimensional view of the mixing assembly of the present invention; Figure 11 It is a three-dimensional view of the mixed material piece in the present invention.

[0019] In the figure: 1. Base; 11. Turntable; 12. Support; 13. Bottom plate; 14. Fixed bracket; 15. Cylinder; 16. Movable bracket; 17. Mixing motor; 18. Gear set; 19. Storage trough; 2. Outer layer; 21. Flip cover; 22. Inspection port; 23. Slot; 24. Limiter; 25. Feeding port; 26. Feeding barrel; 3. Inner layer; 31. Heating wire; 32. Heating rod; 33. Discharge pipe; 4. Feeding channel; 41. Feeding port; 42. Discharge port; 43. One-way flap; 44. Step; 45. Bump; 5. Feeding barrel; 51. Feeding motor; 52. Pushing port; 53. Stop valve; 54. Pushing channel; 55. Diaphragm valve; 56. Air outlet; 6. Temperature sensor; 61. Contact; 7. Mixing assembly; 71. Main shaft; 72. Connecting plate; 73. Mixing piece; 731. Ring; 732. Annular screen; 733. Fixing plate; 734. Slot; 735. Inner blade; 736. Outer blade; 737. Pin; 74. Slave shaft; 75. Stirring blade; 8. Centrifugal fan; 81. Intake pipe; 82. Outlet pipe; 83. Gas collecting tank. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making any creative efforts are within the scope of protection of the present invention.

[0021] like Figure 1 、 Figure 2As shown, a biomass mixing device includes a base 1, a mixing tank and a screw conveyor. The screw conveyor continuously pumps the biomass material to be mixed from bottom to top. The mixing tank includes an outer layer 2 and an inner layer 3. Multiple layers of heating wires 31 are arranged between the outer layer 2 and the inner layer 3 from top to bottom. A feeding channel 4 is provided between adjacent heating wires 31. An inlet 41 and an outlet 42 are respectively provided at both ends of the feeding channel 4. The inlet 41 is connected to the material output port of the screw conveyor, and the outlet 42 is connected to the interior of the inner layer 3. A stop valve 53 and a diaphragm valve 55 are also provided at the position where the feed port 41 is connected to the output port of the screw conveyor. The diaphragm valve 55 is used to connect the high-pressure gas and push the material into the inner layer 3 along the feeding channel 4. The stop valve 53 is used to control the flow rate and timing of the material entering the feeding channel 4; the top of the mixing tank is rotatably connected to the flip cover 21, and a mixing component 7 is provided under the flip cover 21. After being acted upon by the driving force, the mixing component 7 continues to rotate and mixes the dried material inside the inner layer 3.

[0022] This technical solution uses a screw conveyor in conjunction with a stop valve 53 to regularly add materials from different heights of the mixing tank directly into the tank body, which not only improves the uniformity of mixing, but also can adjust the mixing process according to actual needs, thereby improving the flexibility of operation and mixing efficiency. At the same time, biomass materials with a high water content will also be dried by the heating wire 31 during the addition process, reducing the probability of material aggregation or agglomeration, thereby achieving efficient, flexible, and integrated drying and mixing of biomass materials, while reducing production costs and improving the maintainability of the equipment.

[0023] In some embodiments of the present invention, the base 1 is a rectangular structure with enclosures formed on all four sides. A bottom plate 13 is connected to the top of the base 1 via a support 12, and the mixing tank is mounted on top of the bottom plate 13. One end of a fixed bracket 14 is connected to the edge of the bottom plate 13. The other end of the fixed bracket 14 extends upward along the body of the mixing tank and is rotatably connected to one end of a cylinder 15. The output end of the cylinder 15 is rotatably connected to one end of a movable bracket 16. The middle portion of the movable bracket 16 is rotatably connected to the top edge of the mixing tank, and the other end of the movable bracket 16 is fixedly connected to the flip cover 21. When the flip cover 21 needs to be opened, the cylinder 15 is activated, and the output end of the cylinder 15 pulls the movable bracket 16 to flip. At this time, the flip cover 21, which is fixed to the movable bracket 16, rotates synchronously, and the flip cover 21 is in the open state.

[0024] In some embodiments of the present invention, Figure 8As shown, the top of the flip cover 21 is provided with a feeding port 25 and a feeding cylinder 26. The feeding port 25 is used to feed the relatively dry materials to be mixed. The bottom opening of the feeding cylinder 26 is equipped with an electronic valve. The feeding cylinder 26 is used to add the catalyst in a timed and quantitative manner. The benefits of the timed and quantitative addition of the catalyst are mainly reflected in: by adding the catalyst in a timed and quantitative manner, the reaction can be carried out under optimal conditions, thereby improving the reaction efficiency. By precisely controlling the time and amount of catalyst addition, the product distribution can be further optimized, and the quality and purity of the product can be improved.

[0025] It’s important to note that not all biomass mixing processes require the addition of a catalyst. In some cases, the addition of a catalyst may increase costs or have other adverse effects. Therefore, the decision to add a catalyst should be based on a comprehensive consideration of factors such as process requirements, feedstock characteristics, cost-effectiveness, and environmental impact.

[0026] It is worth noting that when it is necessary to add the relatively dry material to be mixed, it can be added after opening the flip cover 21, or it can be added through the feeding port 25 after closing the flip cover 21. This can be selected according to the amount of material to be fed or the timing of feeding.

[0027] The above embodiment is further refined, as shown in FIG. Figure 1 As shown, a card slot 23 is provided on the edge of the flip cover 21, and a limit member 24 is provided on the top edge of the outer layer 2 corresponding to the card slot 23. The limit member 24 is a rotatable block. Multiple limit members 24 cooperate with multiple card slots 23 one by one to achieve a tight closure between the flip cover 21 and the mixing tank.

[0028] In some embodiments of the present invention, Figure 3 、 Figure 4 As shown, the screw conveyor includes a feed barrel 5 and a feed motor 51 located at one end of the feed barrel 5. The feed barrel 5 is a hollow cylinder with a screw rod rotating inside the feed barrel 5. The output end of the feed motor 51 is connected to the screw rod in a transmission manner. The feed barrel 5 is arranged horizontally between the mixing tank. The base 1 is formed with a storage tank 19 at the position corresponding to the feed barrel 5. The storage tank 19 is used to store biomass materials with a high water content. The bottom of the feed barrel 5 is inserted into the storage tank 19, and the feed motor 51 is started. During the rotation process, the screw rod transports the material upward along the feed barrel 5. A push port 52 is provided on the barrel body of the feed barrel 5 at the position corresponding to the feed inlet 41. The push port 52 is connected to a push channel 54 through a stop valve 53, and the push channel 54 is connected to the feed inlet 41.

[0029] It should be noted that when the screw conveyor is conveying vertically, the material is pushed upward by the thrust of the screw in the direction of movement. However, due to the effect of gravity, the lower part needs to be continuously fed to prevent the upper material from sliding down, thereby generating lateral pressure. Therefore, when the stop valve 53 is opened, this lateral pressure will cause the material at the corresponding height in the feeding barrel 5 to be squeezed from the pushing port 52 into the pushing channel 54, and the material conveying process is relatively rapid. Since multiple feeding channels 4 are arranged from top to bottom between the outer layer 2 and the inner layer 3 of the mixing tank, the stop valves 53 at different heights can be opened and closed at regular intervals to achieve regular and quantitative entry of materials from the feeding channels 4 at different heights into the interior of the mixing tank. This not only allows the material to form a more complex flow pattern in the tank body, but also helps to break the original stratification or agglomeration state of the material. Moreover, during mixing, the interaction between the materials is more sufficient, thereby improving the uniformity of mixing.

[0030] The above embodiment is further refined, as shown in FIG. Figure 5 As shown, the inner diameter of the pushing channel 54 tends to gradually expand from the pushing port 52 to the feeding port 41; the outer portion of the pushing channel 54 is provided with a hollow drainage tube matching its outer diameter, and a cavity for accommodating high-pressure gas is formed inside the hollow drainage tube. The output end of the diaphragm valve 55 is connected to the hollow drainage tube, and the input end of the diaphragm valve 55 is connected to an air supply device, such as a pneumatic gas pump, a Roots blower, etc.; an air outlet 56 is formed through the side wall of the pushing channel 54 at a position corresponding to the position of the hollow drainage tube, and the air outlet 56 is connected to the inner cavity of the hollow drainage tube, and the air outlet 56 is inclined, with the inclination direction toward the feeding port 41.

[0031] When the material in the feeding barrel 5 enters the pushing channel 54 through the pushing port 52, the diaphragm valve 55 and the air supply equipment are started, and the high-pressure gas is transported to the air outlet 56 in the pushing channel 54 through the hollow drainage tube. Since the air outlet 56 is set at an angle, the obliquely blown gas will push the material into the feeding channel 4, and the overall material transportation efficiency is high. In addition, since the feeding channel 4 is a sealed structure except for the inlet 41 and the outlet 42 at both ends, there is less gas leakage, and it is also more energy-efficient during the transportation process.

[0032] In some embodiments of the present invention, Figure 3 、 Figure 6 、 Figure 7 As shown, the mixing tank is a circular cylindrical structure, and the feeding channel 4 is also a hollow ring structure. The ring has no large turning points, which facilitates the transportation of materials in the feeding channel 4. In addition: As an example, a one-way flap 43 is rotatably connected to the discharge port 42 of the feeding channel 4. The one-way flap 43 opens and closes in one direction, which can ensure that the material in the feeding channel 4 enters the inner layer 3, while the material already in the inner layer 3 cannot flow back into the feeding channel 4 through the discharge port 42.

[0033] As an example, the bottom surface of the inner cavity of the feeding channel 4 is formed with multiple steps 44 of different heights along its extension direction, and the side surfaces and top surfaces of the inner cavity of the feeding channel 4 are formed with multiple protrusions 45. The design of the protrusions 45 and the steps 44 can increase the probability of material flow and expansion during the transportation process, thereby reducing the phenomenon of material agglomeration, precipitation and stratification in the feeding channel 4, and is also beneficial to increase the heat energy radiation depth of the heating wire 31, which helps to improve the drying efficiency.

[0034] As an example, the portion of the feeding channel 4 between its inlet 41 and outlet 42 is inclined, that is, this portion is not horizontal, and the inlet 41 is at a higher level than the outlet 42. When material enters from the higher inlet 41 and then moves along the inclined feeding channel 4 to the lower outlet 42, this design helps the material flow more smoothly under the action of gravity, reduces the risk of blockage, improves conveying efficiency, and further reduces the possibility of material backflow inside the mixing tank.

[0035] As an example, the ends of the feeding channel 4 are rounded to further avoid the problem of material blockage.

[0036] The above embodiment is further refined, as shown in FIG. Figure 1 、 Figure 3 As shown, multiple electric heating rods 32 are disposed between the bottom of the outer layer 2 and the inner layer 3. The electric heating rods 32 are used to heat the material deposited on the bottom of the inner layer 3 to ensure good fluidity during discharge. An access port 22 is provided at the bottom of the outer layer 2, through which the electric heating rods 32 can be maintained or replaced.

[0037] In some embodiments of the present invention, Figure 2 As shown, a mixing motor 17 and a gear set 18 are mounted above the movable bracket 16. Gear set 18 transmits driving force to its input via a belt, while its output transmits the driving force to the mixing assembly 7. Gear set 18 boasts high transmission efficiency, effectively reducing energy loss. This means that, given the same power, gear set 18 can drive a larger mixing load, improving the equipment's mixing efficiency.

[0038] As an example, Figure 8 、 Figure 10As shown, the mixing assembly 7 includes a main shaft 71, the shaft body of the main shaft 71 is provided with a connecting disc 72 and a mixing piece 73 spaced apart from each other from top to bottom, and three slave shafts 74 are provided at equal angles between the connecting disc 72 and the mixing piece 73. A stirring blade 75 is installed on the shaft body of the slave shaft 74 at the position corresponding to the position where the discharge port 42 is connected to the inner layer 3. The stirring blade 75 is penetrated by a plurality of through holes to facilitate the mixing and rolling of the materials. When the mixing motor 17 is started, the gear set 18 drives the main shaft 71 to rotate, and the connecting disc 72 connected to the main shaft 71, the mixing piece 73, and the three slave shafts 74 located therebetween, together with the stirring blade 75, all rotate at high speed, mixing and stirring the materials inside the tank body.

[0039] The above scheme is further refined, such as Figure 9 As shown, the inner wall of the inner layer 3 is provided with a notch that matches the discharge port 42, and the material enters the inner layer 3 through the notch. Over time, the material conveyed through the feeding channel 4 may accumulate at the notch in the inner wall of the inner layer 3 and on the one-way flap 43. The end of the stirring blade 75 is designed to have a rounded surface, and the length of the stirring blade 75 matches the radius of the inner layer 3. By matching the rotation directions of the stirring blade 75 and the one-way flap 43, the two do not conflict with each other. Therefore, during the mixing process, the stirring blade 75 can also scrape off the accumulated material at the notch in the inner wall of the inner layer 3 and on the surface of the one-way flap 43, thereby ensuring mixing efficiency and quality.

[0040] The above solution is further refined by designing the diameter of the top opening of the mixing tank and the rotation angle of the flip cover 21. When the flip cover 21 rotates, the main shaft 71 and the stirring blade 75 will not conflict with the mixing tank.

[0041] The above scheme is further refined, such as Figure 11 As shown, the mixing piece 73 includes upper and lower rings 731 spaced apart, an annular screen 732 is connected between the two rings 731, a fixing plate 733 is provided inside the annular screen 732, a slot 734 for inserting the main shaft 71 is provided in the middle of the fixing plate 733, a plurality of inner blades 735 are circumferentially spaced apart on the edge of the fixing plate 733, a plurality of outer blades 736 are circumferentially spaced apart between the two rings 731 at positions corresponding to the outer edges of the annular screen 732, the orientation angles of the inner blades 735 and the outer blades 736 are different, a pin 737 is inserted from bottom to top at the position of the ring 731 corresponding to the slave shaft 74, and the pin 737 can be reliably limited by tightening the slave shaft 74.

[0042] The annular screen 732 serves as an additional stirring surface, which increases the contact area with the biomass particles and helps to disperse and mix the particles during the stirring process. And because the angles of the inner blades 735 and the outer blades 736 are different, such as the angle design of the inner blades is usually toward the center of the tank body or slightly tilted upward, such a design helps to lift the material particles at the bottom of the mixing tank upward, forming a convection motion. This convection motion helps to evenly distribute the particles in the mixing tank, reducing dead corners and accumulation. The angle of the outer blades may be toward the wall of the mixing tank or slightly tilted downward. Such a design helps to push the particles close to the wall to the center area of ​​the mixing tank, forming an intersection with the rising particles inside, further enhancing the mixing effect.

[0043] Through the combined action of the annular screen 732 and the blades with different inner and outer angles, the biomass particles form complex convection and shear motions in the mixing tank. These motions help to ensure sufficient contact and mixing between the biomass material particles, thereby improving the uniformity of mixing.

[0044] In some embodiments of the present invention, Figure 2 、 Figure 3 As shown, a discharge pipe 33 is provided at the bottom of the mixing tank for discharging the mixed material from the inner layer 3. A rotating plate 11 is also provided on one side of the base 1. During mixing, a collection box or conveyor belt can be placed under the discharge pipe 33 to collect the mixed material. When collection is no longer needed, the rotating plate 11 can be flipped over.

[0045] In some embodiments of the present invention, Figure 9 As shown, a temperature sensor 6 is also included. The contact 61 of the temperature sensor 6 is inserted into the inner layer 3. The temperature sensor 6 can accurately monitor the temperature inside the tank, and then understand the temperature changes during the mixing process in real time, so as to adjust the mixing speed and stirring intensity according to the temperature or add other catalysts to optimize the mixing effect.

[0046] In some embodiments of the present invention, Figure 1 As shown, the exhaust gas collection assembly is also included, which includes a centrifugal fan 8 and an air collecting tank 83. The suction end of the centrifugal fan 8 is connected to the interior of the inner layer 3 through an air intake pipe 81. The exhaust end of the centrifugal fan 8 extracts the water vapor and exhaust gas from the inner layer 3 through an air outlet pipe 82 and stores them in the air collecting tank 83. Since the heating wire 31 generates water vapor when drying materials with a large water content, this water vapor will enter the inner layer 3 along the feeding channel 4. At this time, the centrifugal fan 8 can be started. The centrifugal fan 8 will extract the exhaust gas and water vapor generated by mixing in the inner layer 3 as much as possible without affecting the material mixing operation inside the tank.

[0047] It's important to note that the opening of the intake pipe 81 is located at the upper end of the tank. This is because exhaust gases and water vapor are generally lighter than air, so they rise and accumulate high in the tank. Placing the intake pipe 81 high in the tank allows for more efficient extraction of these gases and water vapor, preventing them from stagnating or backflowing within the tank, thereby improving removal efficiency. Furthermore, timely removal of exhaust gases and water vapor minimizes interference with the mixing process, ensuring that the biomass particles are fully mixed and achieve the desired uniformity.

[0048] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0049] The above contents are merely examples and explanations of the present invention. Those skilled in the art may make various modifications or additions to the described specific embodiments or replace them in similar ways. As long as they do not deviate from the invention or exceed the scope defined by the claims, they should all fall within the scope of protection of the present invention.

Claims

1. A biomass mixing device, comprising a base, a mixing tank and a screw conveyor, characterized in that: The screw conveyor continuously pumps the biomass material to be mixed from bottom to top, the mixing tank comprises an outer layer and an inner layer, multiple layers of electric heating wires are arranged between the outer layer and the inner layer from top to bottom, a feeding channel is arranged between adjacent electric heating wires, and an inlet and an outlet are respectively provided at both ends of the feeding channel, wherein the inlet is connected to the material outlet of the screw conveyor, and the outlet is connected to the interior of the inner layer; A stop valve and a diaphragm valve are also provided at the position where the feed port is connected to the output port of the screw conveyor. The diaphragm valve is used to connect the high-pressure gas and push the material into the inner layer along the feeding channel. The stop valve is used to control the flow rate and timing of the material entering the feeding channel. The top of the mixing tank is rotatably connected with a flip cover, and a mixing component is arranged under the flip cover. The mixing component rotates continuously after being acted upon by a driving force and mixes the dried materials in the inner layer; A bottom plate is connected above the base via a support, and the mixing tank is installed above the bottom plate; The edge of the bottom plate is connected to one end of a fixed bracket, the other end of the fixed bracket extends upward along the tank body of the mixing tank and is rotatably connected to one end of a cylinder, the output end of the cylinder is rotatably connected to one end of a movable bracket, the middle part of the movable bracket is rotatably connected to the top edge of the mixing tank, and the other end of the movable bracket is fixedly connected to the flip cover; The feeding channel is an annular hollow structure, and the feeding channel also includes any one or more of AD: A. A one-way flap is rotatably connected to the discharge port of the feeding channel; B. The inner cavity bottom surface of the feeding channel is formed with multiple steps of different heights along its extension direction; C. A plurality of protrusions are formed on the inner cavity side and top surface of the feeding channel; D. The portion of the feeding channel corresponding to the portion between the feed port and the discharge port is in an inclined state, and the level of the feed port is higher than that of the discharge port.

2. A biomass mixing device according to claim 1, characterized in that: The screw conveyor comprises a feeding barrel and a feeding motor located at one end of the feeding barrel, the feeding barrel is a hollow cylinder, a screw rod is rotatably arranged inside the feeding barrel, and the output end of the feeding motor is drivingly connected to the screw rod; A pushing port is arranged on the barrel body of the feeding barrel corresponding to the feeding port, and the pushing port is connected to a pushing channel via a stop valve, and the pushing channel is communicated with the feeding port.

3. A biomass mixing device according to claim 2, characterized in that: The inner diameter of the pushing channel tends to gradually expand from the pushing port to the feeding port; the outer part of the pushing channel is provided with a hollow drainage tube matching its outer diameter, a cavity for accommodating high-pressure gas is formed inside the hollow drainage tube, the output end of the diaphragm valve is connected to the hollow drainage tube, and the input end of the diaphragm valve is connected to a gas supply device; an air outlet is formed through the side wall of the pushing channel at a position corresponding to the hollow drainage tube, the air outlet is connected to the inner cavity of the hollow drainage tube, and the air outlet is arranged at an angle.

4. A biomass mixing device according to claim 1, characterized in that: The mixing component includes a main shaft, and a connecting disk and a mixing piece are arranged at intervals from top to bottom on the shaft body of the main shaft, and a plurality of slave shafts are arranged at equal angles between the connecting disk and the mixing piece, and a stirring blade is installed on the shaft body of the slave shaft corresponding to the position where the discharge port is connected to the inner layer.

5. A biomass mixing device according to claim 4, characterized in that: The mixing piece includes upper and lower rings arranged at intervals, an annular screen is connected between the two rings, a fixing plate is arranged inside the annular screen, a slot for inserting the main shaft is opened in the middle of the fixing plate, a plurality of inner blades are arranged at circumferential intervals on the edge of the fixing plate, a plurality of outer blades are arranged at circumferential intervals between the two rings at positions corresponding to the outer edges of the annular screen, and pins are inserted from bottom to top in the rings corresponding to the slave shaft.

6. A biomass mixing device according to claim 1, characterized in that: A temperature sensor is also included, wherein a contact of the temperature sensor is inserted into the inner layer.

7. The biomass mixing device according to claim 1, characterized in that: It also includes an exhaust gas collection component, which includes a centrifugal fan and an air collecting tank. The suction end of the centrifugal fan is connected to the interior of the inner layer through an air intake pipe, and the exhaust end of the centrifugal fan extracts water vapor and exhaust gas from the inner layer through an exhaust pipe and stores them in the air collecting tank.

8. The biomass mixing device according to claim 1, characterized in that: The top of the flip cover is provided with a feeding port and a feeding cylinder. The feeding port is used for feeding relatively dry materials to be mixed. An electronic valve is installed at the bottom opening of the feeding cylinder. The feeding cylinder is used for feeding catalysts in a timely and quantitative manner.

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