Accurate feeding precise screw feeder for biomass pyrolysis

Abstract

The utility model discloses an accurate feeding precision screw feeder for biomass pyrolysis, which comprises a feeder, a screw feeding mechanism, a pretreatment mechanism and an anti-clogging mechanism, firstly, a worker places materials needing biomass pyrolysis on a weighing device through a feeding port, and the materials are weighed through the weighing device; the weight is displayed at the upper end of a digital display screen, after the weight is appropriate, a worker pulls away a partition plate through a partition plate groove, biomass pyrolysis materials are conveyed into a feeding pipe through a bent pipe, a second servo motor is started, the second servo motor drives a crushing rod to rotate, and the crushing rod rotates; the crushing rod rotates to drive the crushing blades to perform primary crushing on biomass pyrolysis materials, the biomass pyrolysis materials are conveyed into the feeder after being crushed for the first time, and the precise screw feeder for precise feeding for biomass pyrolysis is simple and reasonable in structural design and convenient and fast to use and operate.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass heat, in particular to a precision screw feeder for precise feeding in biomass pyrolysis. Background Technique

[0002] Biomass pyrolysis (also known as thermal decomposition or cracking) generally refers to the process in which biomass is heated and raised in temperature under an anaerobic or low-oxygen environment, causing molecular decomposition to produce coke, condensable liquids, and gas products, which is an important utilization form of biomass energy. In the process of biomass pyrolysis, the feeding system is a very important link. Appropriate feeding methods and equipment can achieve precise supply of biomass and ensure the stability and efficiency of the pyrolysis reaction. Common feeding methods include vibrating feeders, scraper feeders, screw feeders, etc. Among them, the precision screw feeder has gradually become one of the important feeding equipment in the field of biomass pyrolysis due to its high precision, high energy consumption efficiency, and self-adaptability.

[0003] However, the existing biomass pyrolysis screw feeders generally adopt a single-screw mechanism, which cannot crush and pre-treat biomass during transportation, and the discharge port is blocked after long-term use. Therefore, those skilled in the art have provided a precision screw feeder for precise feeding in biomass pyrolysis to solve the problems raised in the above background technique. Summary of the Invention

[0004] The purpose of the utility model is to provide a precision screw feeder for precise feeding in biomass pyrolysis to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A precision screw feeder for precise feeding in biomass pyrolysis, including a feeder, a screw feeding mechanism, a pretreatment mechanism, and an anti-blocking mechanism. It is characterized in that a driving chamber is arranged at one end of the feeder, a pair of first servo motors are arranged on the side wall of the driving chamber close to the feeder, a screw feeding mechanism is arranged in the driving chamber and the feeder, a discharge port is arranged at the bottom of the inner end of the feeder far from the driving chamber, an anti-blocking mechanism is arranged at the upper end of the inner side wall of the discharge port, a cover plate is arranged on the upper end surface of the feeder, and a screw feeding mechanism is arranged on the upper end of the cover plate.

[0007] As a further solution of the utility model: a first transmission rod is arranged at the other end of each of the first servo motors, a first bevel gear A is arranged at the other end of each of the first transmission rods, a second bevel gear A is arranged at the other end of each of the first bevel gear As, a second transmission rod is arranged at the upper end of each of the second bevel gear As, a first bevel gear B is arranged at the bottom end of each of the second transmission rods, a second bevel gear B is arranged at the other end of each of the first bevel gear Bs, a third transmission rod is arranged at the other end of each of the second bevel gear Bs, a rotating rod is arranged at the other end of each of the third transmission rods, a plurality of spiral blades are arranged at the upper end of each of the rotating rods, and the spiral blades are arranged at equal intervals.

[0008] As a further solution of the utility model: a cylinder is arranged inside the side wall at one end of the discharge port, a pneumatic push rod is arranged at the end of the cylinder close to the discharge port, a movable plate is arranged at the other end of the pneumatic push rod, a plurality of cleaning rollers are arranged at the other end of the movable plate, and the cleaning rollers are arranged in a matrix at the upper end of the movable plate.

[0009] As a further solution of the utility model: a feeding pipe is arranged at the center of the upper end surface of the cover plate, bent pipes are arranged on the side walls at both ends of the upper end surface of the feeding pipe, weighing devices are arranged at the other ends of the bent pipes, display screens are arranged at the upper ends of the weighing devices, a partition is arranged inside the weighing devices, a partition groove is arranged on the outer side wall of the weighing devices, the partition is movably connected with the weighing devices, feeding ports are arranged at the upper ends of the weighing devices, a second servo motor is arranged at the center of the upper end surface of the feeding pipe, a crushing rod is arranged at the bottom end of the second servo motor, the crushing rod is sleeved and connected with the feeding pipe, a plurality of crushing blades are arranged on the outer side wall of the crushing rod, and the crushing blades are arranged at equal intervals.

[0010] As a further solution of the utility model: the first bevel gear A and the second bevel gear A are vertically arranged and meshed with each other.

[0011] As a further solution of the utility model: the first bevel gear B and the second bevel gear B are vertically arranged and meshed with each other.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: Since the present utility model is provided with a spiral feeding mechanism, double spiral feeding and the transmission cooperation between parts are adopted, which can improve the pyrolysis efficiency of biomass and the quality of products, and can crush and pre-treat biomass raw materials. During the feeding process, the size and uniformity of biomass particles are controlled to avoid affecting the uneven distribution inside the reactor and the quality difference of products. Since a pretreatment mechanism is provided, the material can be weighed and initially crushed before the process to prepare for subsequent work. Moreover, during the biomass pyrolysis process, the feeding amount must be controlled within a certain range to facilitate the control of temperature and pressure inside the reactor. Excessive feeding amount may cause the reactor to be overloaded and overheated, increasing the risk of energy consumption and equipment damage; while too little feeding amount may reduce the output and product quality. Since a blockage prevention mechanism is provided, it can prevent the material from blocking the discharge port, resulting in the inability to continuously transmit and reducing the efficiency. The present utility model relates to a precision spiral feeder for precise feeding in biomass pyrolysis. The structure of the present utility model is designed simply and reasonably, and it is convenient and fast to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of a precision spiral feeder for precise feeding in biomass pyrolysis.

[0014] Figure 2 It is a schematic internal structure diagram of a precision spiral feeder for precise feeding in biomass pyrolysis.

[0015] Figure 3 It is a schematic side sectional structure diagram of a precision spiral feeder for precise feeding in biomass pyrolysis.

[0016] Figure 4 It is an enlarged schematic structural diagram of part A in a precision spiral feeder for precise feeding in biomass pyrolysis.

[0017] Figure 5 It is a schematic structural diagram of the pretreatment mechanism in a precision spiral feeder for precise feeding in biomass pyrolysis.

[0018] Figure 6 It is a schematic side sectional structure diagram of the pretreatment mechanism in a precision spiral feeder for precise feeding in biomass pyrolysis.

[0019] In the figure: 1 - feeder, 2 - drive bin, 3 - first servo motor, 4 - cover plate, 5 - rotating rod, 6 - spiral blade, 7 - heat dissipation hole, 8 - second transmission rod, 9 - first bevel gear A, 10 - second bevel gear A, 11 - first transmission rod, 12 - first bevel gear B, 13 - second bevel gear B, 14 - third transmission rod, 15 - cylinder, 16 - pneumatic push rod, 17 - movable plate, 18 - discharge port, 19 - cleaning roller, 20 - feed pipe, 21 - weigher, 22 - display screen, 23 - feed inlet, 24 - bent pipe, 25 - partition groove, 26 - partition, 27 - second servo motor, 28 - crushing blade, 29 - crushing rod. Detailed implementation manners

[0020] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners. In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] Please refer to Figures 1 to 6, in the embodiment of the present utility model, a precision screw feeder for precise feeding in biomass pyrolysis includes a feeder 1, a drive bin 2, a first servo motor 3, a cover plate 4, a rotating rod 5, a spiral blade 6, a heat dissipation hole 7, a second transmission rod 8, a first bevel gear A9, a second bevel gear A10, a first transmission rod 11, a first bevel gear B12, a second bevel gear B13, a third transmission rod 14, a cylinder 15, a pneumatic push rod 16, a movable plate 17, a discharge port 18, a cleaning roller 19, a feeding pipe 20, a weighing device 21, a display screen 22, a feeding port 23, a bent pipe 24, a partition groove 25, a partition 26, a second servo motor 27, a crushing blade 28, a crushing rod 29;One end of the feeder 1 is provided with a drive bin 2. A pair of first servo motors 3 are arranged on the side wall of the drive bin 2 close to one end of the feeder 1. A spiral feeding mechanism is arranged in the drive bin 2 and the feeder 1. An outlet 18 is arranged at the bottom of the inner side of the end of the feeder 1 far from the drive bin 2. An anti-blocking mechanism is arranged at the upper end of the inner side wall of the outlet 18. A cover plate 4 is arranged on the upper end surface of the feeder 1. A spiral feeding mechanism is arranged on the upper end of the cover plate 4. The other ends of the first servo motors 3 are respectively provided with first transmission rods 11. The other ends of the first transmission rods 11 are respectively provided with first bevel gears A9. The other ends of the first bevel gears A9 are respectively provided with second bevel gears A10. The upper ends of the second bevel gears A10 are respectively provided with second transmission rods 8. The bottom ends of the second transmission rods 8 are respectively provided with first bevel gears B12. The other ends of the first bevel gears B12 are respectively provided with second bevel gears B13. The other ends of the second bevel gears B13 are respectively provided with third transmission rods 14. The other ends of the third transmission rods 14 are respectively provided with rotating rods 5. A plurality of spiral blades 6 are arranged on the upper ends of the rotating rods 5. The spiral blades 6 are arranged at equal intervals. A cylinder 15 is arranged inside the side wall of one end of the outlet 18. A pneumatic push rod 16 is arranged at the end of the cylinder 15 close to the outlet 18. The other end of the pneumatic push rod 16 is provided with a movable plate 17. A plurality of cleaning rollers 19 are arranged at the other end of the movable plate 17. The cleaning rollers 19 are arranged in a matrix on the upper end of the movable plate 17. A feeding pipe 20 is arranged at the center of the upper end surface of the cover plate 4. Bent pipes 24 are arranged on the side walls at both ends of the upper end surface of the feeding pipe 20. Weighing devices 21 are arranged at the other ends of the bent pipes 24. Display screens 22 are arranged on the upper ends of the weighing devices 21. A partition 26 is arranged inside the weighing devices 21. A partition groove 25 is arranged on the outer side wall of the weighing devices 21. The partition 26 is movably connected with the weighing devices 21. Feeding ports 23 are arranged on the upper ends of the weighing devices 21. A second servo motor 27 is arranged at the center of the upper end surface of the feeding pipe 20. A crushing rod 29 is arranged at the bottom end of the second servo motor 27. The crushing rod 29 is sleeved and connected with the feeding pipe 20. A plurality of crushing blades 28 are arranged on the outer side wall of the crushing rod 29. The crushing blades 28 are arranged at equal intervals. The first bevel gear A9 and the second bevel gear A10 are vertically arranged and meshed with each other. The first bevel gear B12 and the second bevel gear B13 are vertically arranged and meshed with each other.;

[0022] The working principle of the present utility model is as follows: First, the staff places the materials to be pyrolyzed by biomass into the weighing device through the feeding port respectively, and weighs them through the weighing device. The weights are displayed at the upper end of the display screen. After the weights are appropriate, the staff pulls out the partition through the partition slot, and transfers the materials to be pyrolyzed by biomass into the feeding pipe through the curved pipe. Then, the second servo motor is started. The second servo motor drives the crushing rod to rotate. The rotation of the crushing rod drives the crushing blades to perform the first-step crushing on the materials to be pyrolyzed by biomass. After the materials to be pyrolyzed by biomass are initially crushed, they are transferred into the feeder. Then, the first servo motor is started. The first servo motor drives the first transmission rod to rotate. The rotation of the first transmission rod drives the first bevel gear A to rotate. And the first bevel gear A is vertically arranged with the second bevel gear A, and the first bevel gear A meshes with the second bevel gear A, which can drive the second bevel gear A to rotate. There is a second transmission rod at the upper end of the second bevel gear A, which can make the second transmission rod rotate. When the second transmission rod moves, the first bevel gear B arranged at the upper end of the second transmission rod rotates. Also, because the first bevel gear B is vertically arranged with the second bevel gear B and the first bevel gear B meshes with the second bevel gear B, the second bevel gear B is driven to rotate. The second bevel gear B drives the third transmission rod. The other end of the third transmission rod is fixedly connected with a rotating rod, and the rotating rod drives the spiral blade at the upper end to rotate for secondary crushing and transmission. After that, it can be transferred to the discharge port. When the feeder is used for a long time, the discharge port of the feeder is blocked. The staff starts the cylinder. The cylinder drives the pneumatic push rod to push. The pneumatic push drives the movable plate at the upper end and the cleaning roller at the upper end of the movable plate to clean the discharge port. Because the present utility model is provided with a spiral feeding mechanism, and adopts double spiral feeding and the transmission cooperation between parts, it can improve the pyrolysis efficiency and product quality of biomass, and can crush and pre-treat the biomass raw materials, control the size and uniformity of biomass particles during the feeding process, so as to avoid affecting the uneven distribution inside the reactor and the product quality difference. Because it is provided with a pretreatment mechanism, it can weigh and initially crush the materials before the process to prepare for the subsequent work. And during the biomass pyrolysis process, the feeding amount must be controlled within a certain range to facilitate the control of the temperature and pressure inside the reactor. Excessive feeding amount may cause the reactor to be overloaded and overheated, increasing the risk of energy consumption and equipment damage; while too little feeding amount may reduce the output and product quality. Because it is provided with an anti-blocking mechanism, it can prevent the materials from blocking the discharge port, resulting in the inability to continuously transmit and reducing the efficiency. The present utility model relates to a precision spiral feeder for precise feeding in biomass pyrolysis. The present utility model is simple and reasonable in structural design and convenient and fast to operate.

[0023] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0024] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A precision screw feeder for accurate feeding of biomass pyrolysis, comprising a feeder (1), a screw feeding mechanism, a pretreatment mechanism, and an anti-blocking mechanism, characterized in that: A driving bin (2) is provided at one end of the feeder (1); a pair of first servo motors (3) are provided on a side wall of the driving bin (2) close to the feeder (1); a spiral feeding mechanism is provided in the driving bin (2) and the feeder (1); a discharge port (18) is provided at the bottom of the end of the feeder (1) away from the driving bin (2); an anti-blocking mechanism is provided at the upper end of the inner wall of the discharge port (18); a cover plate (4) is provided on the upper end surface of the feeder (1); and a spiral feeding mechanism is provided at the upper end of the cover plate (4).

2. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 1 is characterized in that: The spiral feeding mechanism comprises a rotating rod (5), a spiral blade (6), a heat dissipation hole (7), a second transmission rod (8), a first bevel gear A (9), a second bevel gear A (10), a first transmission rod (11), a first bevel gear B (12), a second bevel gear B (13), and a third transmission rod (14); the other end of the first servo motor (3) is provided with a first transmission rod (11).

3. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 2, characterized in that: The first transmission rod (11) is provided with a first bevel gear A (9) at the other end, the first bevel gear A (9) is provided with a second bevel gear A (10) at the other end, the second transmission rod (8) is provided at the upper end of the second bevel gear A (10), the first bevel gear B (12) is provided at the lower end of the second transmission rod (8), the second bevel gear B (13) is provided at the other end of the first bevel gear B (12), the third transmission rod (14) is provided at the other end of the second bevel gear B (13), the rotating rod (5) is provided at the other end of the third transmission rod (14), the rotating rod (5) is provided with a plurality of spiral blades (6) at the upper end, and the spiral blades (6) are arranged at equal intervals.

4. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 1, characterized in that: The anti-blocking mechanism comprises a cylinder (15), a pneumatic push rod (16), a movable plate (17), a discharge port (18), and a cleaning roller (19); the cylinder (15) is arranged in a side wall at one end of the discharge port (18).

5. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 4, characterized in that: A pneumatic push rod (16) is arranged at one end of the cylinder (15) close to the discharge port (18), a movable plate (17) is arranged at the other end of the pneumatic push rod (16), and a plurality of cleaning rollers (19) are arranged at the other end of the movable plate (17). The cleaning rollers (19) are arranged in a matrix on the upper end of the movable plate (17).

6. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 1, characterized in that: The pretreatment mechanism comprises a feeding pipe (20), a weighing device (21), a digital display screen (22), a feeding port (23), a curved pipe (24), a partition groove (25), a partition (26), a second servo motor (27), a crushing blade (28), and a crushing rod (29). The feeding pipe (20) is arranged at the center of the upper end surface of the cover plate (4).

7. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 6, characterized in that: The side walls at both ends of the upper end surface of the feeding pipe (20) are provided with curved tubes (24), the other end of the curved tube (24) is provided with a weighing device (21), the upper end of the weighing device (21) is provided with a display screen (22), a partition (26) is provided inside the weighing device (21), a partition groove (25) is provided on the outer side wall of the weighing device (21), the partition (26) is movably connected to the weighing device (21), and a feed port (23) is provided at the upper end of the weighing device (21).

8. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 7, characterized in that: A second servo motor (27) is arranged at the center of the upper end surface of the feeding tube (20), a crushing rod (29) is arranged at the bottom end of the second servo motor (27), the crushing rod (29) is sleeved and connected with the feeding tube (20), and a plurality of crushing blades (28) are arranged on the outer wall of the crushing rod (29), and the crushing blades (28) are arranged at equal intervals.

9. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 3, characterized in that: The first bevel gear A (9) and the second bevel gear A (10) are arranged vertically, and the first bevel gear A (9) and the second bevel gear A (10) are meshed.

10. The precision screw feeder for accurate feeding of biomass pyrolysis according to claim 3, characterized in that: The first bevel gear B (12) and the second bevel gear B (13) are arranged vertically, and the first bevel gear B (12) and the second bevel gear B (13) are meshed.

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