A pick-up type biomass pellet making machine

Abstract

The present invention discloses a pick-up type biomass pellet granulator, which comprises a chassis (1), a feed port (a) is arranged on one side of the chassis (1), a feeding device is installed at the feed port (a) of the chassis (1), rollers (4) are installed at the four corners of the bottom of the chassis (1), a steam generator (2) is installed inside the chassis (1), and a rolling granulator and a steam explosion chamber (3) for driving the rolling granulator and a valve group driven by the steam explosion chamber (3) are installed inside the chassis (1). The present invention greatly improves the overall granulation efficiency by integrating feeding, steam explosion and rolling granulator, and the biomass pellets pressed out by steam explosion will not be loose after drying, thereby greatly improving the mechanical strength and energy density of the biomass pellets.

Description

Technical Field

[0001] The present invention relates to the technical field related to biomass fuel manufacturing equipment, and in particular to a pick-up type biomass pellet making machine. Background Art

[0002] Biomass resources have low energy density, and there are problems such as difficulty in transportation and storage, as well as low energy utilization, which seriously restrict the large-scale application of biomass resources. In response to this phenomenon, biomass solidification molding technology can compress irregular and loose biomass into regular and high-density molded fuels, which can upgrade biomass from low-grade energy to medium-to-high-grade energy. Biomass molded fuel has high thermal efficiency and good combustion performance, and is an ideal fuel to replace coal. However, because the three major components in the biomass cell wall (cellulose, hemicellulose and lignin) are tightly cross-linked together, a physical and chemical anti-degradation barrier is formed, resulting in low mechanical strength and energy density of biomass molded fuels, which seriously hinders the further improvement of the quality of biomass molded fuels. Therefore, it is crucial to adopt appropriate pretreatment technology.

[0003] In order to improve the mechanical strength and energy density of biomass fuel particles, the current common method is to achieve it through chemical method and steam explosion method. The chemical method is to treat it through acid methods such as sulfuric acid, nitric acid, hydrochloric acid, phosphoric acid, etc. Its main purpose is to hydrolyze hemicellulose and destroy the crystalline structure of cellulose, making the structure of the raw material looser. However, its disadvantages are also obvious, with high manufacturing time cost, low pelletizing efficiency, and high pollution level.

[0004] Steam explosion refers to the process of rapidly placing the material in a high-temperature and high-pressure steam state, heating the material with steam, and maintaining it for a few seconds to evaporate the water inside the fiber cells, hydrolyze the hemicellulose, and then suddenly reduce the pressure to explode the material. Steam explosion is essentially a thermomechanical chemical process. The advantages of steam explosion are obvious compared to chemical methods, with less pollution. However, the straw still needs to go through a steam explosion process before being fed into the extrusion pellet machine, which makes the overall work efficiency low. Therefore, providing a seamless equipment that can integrate feeding, steam explosion, and final extrusion molding is the key to improving the efficiency of steam explosion pelleting. Summary of the invention

[0005] The object of the present invention is to provide a pick-up type biomass pellet making machine which can effectively solve the problems existing in the background technology.

[0006] In order to solve the problems existing in the background technology, it comprises a chassis 1, a feed port a is arranged on one side of the chassis 1, a feeding device is installed at the feed port a of the chassis 1, rollers 4 are installed at the four corners of the bottom of the chassis 1, and a steam generator 2 is installed inside the chassis 1;

[0007] The cabinet 1 is internally provided with a rolling granulating device, a steam explosion chamber 3 for driving the rolling granulating device, and a valve group driven by the steam explosion chamber 3;

[0008] The feeding device comprises side plates 5 located on both sides of the feed port a, and a bucket elevator 100 located outside the chassis 1 is installed between the two side plates 5; a guide channel located in the chassis 1 is formed by two mutually parallel guide plates 6 between the two side plates 5;

[0009] The steam explosion chamber 3 is a hollow tubular structure with a first window b on its outer circumferential surface. The steam explosion chamber 3 is arranged in a sleeve 7. The outer circumferential surface of the steam explosion chamber 3 can be sealed and rotated with the inner wall of the steam explosion chamber 3. One end of the sleeve 7 is fixedly mounted on the inner wall of the chassis 1. The outer circumferential surface above the sleeve 7 is communicated with the diversion channel. The first gear shaft 8 and the valve stem 9 are respectively fixedly mounted on both ends of the steam explosion chamber 3. The end of the first gear shaft 8 passes through the driving gear 10 and is rotatably connected with the inner wall of the chassis 1. The end of the valve stem 9 passes through the chassis 1 rotatably connected with it and docks with the power output shaft end of the motor assembly 11. The valve stem 9 is a hollow tubular structure with one end leading to the inside of the steam explosion chamber 3. The first window b corresponds to the bottom of the diversion channel.

[0010] The roller granulating equipment comprises two extrusion forming rollers 12 which are parallel to each other and in contact with each other, and the outer circumferential surfaces of the extrusion forming rollers 12 are provided with corresponding forming grooves, and the forming grooves are interlocked when the two extrusion forming rollers 12 are in contact with each other; the two ends of the extrusion forming rollers 12 are respectively installed with second gear shafts 13, and the ends of the second gear shafts 13 are rotatably connected and matched with the inner wall of the chassis 1, and the two second gear shafts 13 located at the same end are respectively installed with first driven gears 14, and the two first driven gears 14 are meshed with each other, and the second gear shaft 13 of one of the extrusion forming rollers 12 is installed with a second driven gear 15 which can mesh with the driving gear 10;

[0011] The valve group comprises a first flange 16 installed at one end face of the steam explosion chamber 3 and a raft 17 located in the sleeve 7, wherein the first flange 16 is located at the edge of the steam explosion chamber 3, and the outer circumferential surface of the raft 17 can be slidably fitted in the keyway of the inner wall of the sleeve 7, and the edge of the raft 17 facing the first flange 16 is provided with a second flange 18 concentric with the raft 17, and the inside of the raft 17 is concentrically provided with a valve sleeve 19 that can be sealed and slidably fitted with the valve stem 9, and the valve sleeve 19 is radially penetrated with a first valve hole 20, and the valve stem 9 is radially penetrated with a second valve hole 21;

[0012] When the apex of the first flange 16 contacts the apex of the second flange 18 , the first valve hole 20 overlaps with the second valve hole 21 .

[0013] The interior of the sleeve 7 is separated into an independent pressurized air chamber e by a sealing valve plate 22, and a spring 23 is arranged inside the pressurized air chamber e and is sleeved on the valve sleeve 19. The two ends of the spring 23 are respectively pressed between the raft plate 17 and the side wall of the chassis 1. The interior of the pressurized air chamber e is connected to the exhaust end of the steam generator 2 through an explosion-proof pipe 24.

[0014] A second window c corresponding to the first window b is formed at the bottom of the sleeve 7 , and the second window c is located directly above the two extrusion forming rollers 12 . A third window d is formed at the bottom of the chassis 1 , and the third window d is located directly below the two extrusion forming rollers 12 .

[0015] Guard plates 102 are respectively provided on the outer side surfaces of the side plates on both sides of the bucket elevator 100, and guide grooves 101 arranged along the length direction are opened on the outer side surfaces of the side plates on both sides of the bucket elevator 100. Guide rails that can slide with the guide grooves 101 are installed on the guard plates 102. A guide protection foot 103 is bent at the bottom of the side plates on both sides of the bucket elevator 100, and a guide wheel 104 that directly contacts the ground is installed at the end between the two guide protection feet 103. The guard plates 102 are fixedly installed on a bracket plate 105, and the bracket plate 105 is fixedly installed below the feed port a in the chassis 1.

[0016] Due to the adoption of the above technical scheme, the present invention has the following beneficial effects: by integrating feeding, steam explosion and double-roll granulation, the overall granulation efficiency is greatly improved, and the biomass pellets pressed by steam explosion will not become loose after drying, which greatly improves the mechanical strength and energy density of the biomass pellets. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

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

[0019] Figure 2 It is a structural schematic diagram of the rolling granulation equipment in the present invention;

[0020] Figure 3 It is a structural schematic diagram of the valve sleeve in the present invention;

[0021] Figure 4 It is a structural schematic diagram of the valve stem in the present invention. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See also Figure 1-4 This specific embodiment is implemented by adopting the following technical scheme, which comprises a chassis 1, a feed port a is provided on one side of the chassis 1, a feeding device is installed at the feed port a of the chassis 1, rollers 4 are installed at the four corners of the bottom of the chassis 1, and a steam generator 2 is installed inside the chassis 1;

[0024] The cabinet 1 is internally provided with a rolling granulating device, a steam explosion chamber 3 for driving the rolling granulating device, and a valve group driven by the steam explosion chamber 3;

[0025] The feeding device comprises side plates 5 located at both sides of the feed port a, and a bucket elevator 100 located outside the chassis 1 is installed between the two side plates 5; a guide channel located in the chassis 1 is formed by two mutually parallel guide plates 6 between the two side plates 5;

[0026] The steam explosion chamber 3 is a hollow tubular structure with a first window b on its outer circumferential surface. The steam explosion chamber 3 is arranged in a sleeve 7. The outer circumferential surface of the steam explosion chamber 3 can be sealed and rotated with the inner wall of the steam explosion chamber 3. One end of the sleeve 7 is fixedly mounted on the inner wall of the chassis 1. The outer circumferential surface above the sleeve 7 is communicated with the diversion channel. The first gear shaft 8 and the valve stem 9 are respectively fixedly mounted on both ends of the steam explosion chamber 3. The end of the first gear shaft 8 passes through the driving gear 10 and is rotatably connected with the inner wall of the chassis 1. The end of the valve stem 9 passes through the chassis 1 rotatably connected with it and docks with the power output shaft end of the motor assembly 11. The valve stem 9 is a hollow tubular structure with one end leading to the inside of the steam explosion chamber 3. The first window b corresponds to the bottom of the diversion channel.

[0027] The roller granulating equipment comprises two extrusion forming rollers 12 which are parallel to each other and in contact with each other, and the outer circumferential surfaces of the extrusion forming rollers 12 are provided with corresponding forming grooves, and the forming grooves are interlocked when the two extrusion forming rollers 12 are in contact with each other; the two ends of the extrusion forming rollers 12 are respectively installed with second gear shafts 13, and the ends of the second gear shafts 13 are rotatably connected and matched with the inner wall of the chassis 1, and the two second gear shafts 13 located at the same end are respectively installed with first driven gears 14, and the two first driven gears 14 are meshed with each other, and the second gear shaft 13 of one of the extrusion forming rollers 12 is installed with a second driven gear 15 which can mesh with the driving gear 10;

[0028] The valve group comprises a first flange 16 installed at one end face of the steam explosion chamber 3 and a raft 17 located in the sleeve 7, wherein the first flange 16 is located at the edge of the steam explosion chamber 3, and the outer circumferential surface of the raft 17 can be slidably fitted in the keyway of the inner wall of the sleeve 7, and the edge of the raft 17 facing the first flange 16 is provided with a second flange 18 concentric with the raft 17, and the inside of the raft 17 is concentrically provided with a valve sleeve 19 that can be sealed and slidably fitted with the valve stem 9, and the valve sleeve 19 is radially penetrated with a first valve hole 20, and the valve stem 9 is radially penetrated with a second valve hole 21;

[0029] When the apex of the first flange 16 contacts the apex of the second flange 18 , the first valve hole 20 overlaps with the second valve hole 21 .

[0030] The interior of the sleeve 7 is separated into an independent pressurized air chamber e by a sealing valve plate 22, and a spring 23 is arranged inside the pressurized air chamber e and is sleeved on the valve sleeve 19. The two ends of the spring 23 are respectively pressed between the raft plate 17 and the side wall of the chassis 1. The interior of the pressurized air chamber e is connected to the exhaust end of the steam generator 2 through an explosion-proof pipe 24.

[0031] A second window c corresponding to the first window b is formed at the bottom of the sleeve 7 , and the second window c is located directly above the two extrusion forming rollers 12 . A third window d is formed at the bottom of the chassis 1 , and the third window d is located directly below the two extrusion forming rollers 12 .

[0032] Guard plates 102 are respectively provided on the outer side surfaces of the side plates on both sides of the bucket elevator 100, and guide grooves 101 arranged along the length direction are opened on the outer side surfaces of the side plates on both sides of the bucket elevator 100. Guide rails that can slide with the guide grooves 101 are installed on the guard plates 102. A guide protection foot 103 is bent at the bottom of the side plates on both sides of the bucket elevator 100, and a guide wheel 104 that directly contacts the ground is installed at the end between the two guide protection feet 103. The guard plates 102 are fixedly installed on a bracket plate 105, and the bracket plate 105 is fixedly installed below the feed port a in the chassis 1.

[0033] The following is a further description of the method and principle of using the technical solution in this specific implementation method in conjunction with the accompanying drawings:

[0034] First, the bucket elevator 100, the steam generator 2 and the motor assembly 11 are started, and the bucket elevator 100 delivers the physically crushed material to the feed port a through the hopper and into the guide channel;

[0035] After the steam generator 2 is started, water vapor is transported to the closed pressurized air chamber e and gradually pressurized;

[0036] The motor assembly 11 drives the steam explosion chamber 3 to rotate in the process of driving the valve stem 9 to rotate. When the first window b rotates to gradually dock with the guide channel, the material in the guide channel automatically falls into the steam explosion chamber 3. When the first window b on the steam explosion chamber 3 is completely rotated to stagger the guide channel, the top of the first flange 16 gradually moves to the top of the second flange 18. At this time, the first valve hole 20 coincides with the second valve hole 21. At this time, the high-pressure water vapor in the pressurized air chamber e can pass through the first valve hole 20 and the second valve hole 21 through the valve The rod 9 enters the steam explosion chamber 3, so that the material in the steam explosion chamber 3 is instantly in a high-temperature and high-pressure steam state, and the material is heated by steam. As the steam explosion chamber 3 further rotates, the first window b begins to overlap with the second window c, and at the same time, the first flange 16 and the second flange 18 are separated from each other, and the first valve hole 20 and the second valve hole 21 are closed, thereby achieving rapid pressure relief of the material in the steam explosion chamber 3, so that the material is exploded, and the steam-exploded material falls between the two extrusion forming rollers 12;

[0037] During the rotation of the steam explosion chamber 3, the meshing cooperation between the driving gear 10 and the second driven gear 15 drives one of the extrusion forming rollers 12 to rotate. The rotation of one of the extrusion forming rollers 12 drives the two extrusion forming rollers 12 to rotate relative to each other by using the two mutually meshing first driven gears 14, thereby achieving the purpose of rolling extrusion discharging. The extruded biomass particles finally fall through the third window d.

[0038] The guide wheel 104 can ensure that the entire bucket elevator 100 is always at an optimal height above the ground, eliminating the phenomenon of the bucket in the bucket elevator 100 rubbing against the ground or even hitting the ground due to the ups and downs of the ground, so that the bottom of the bucket elevator 100 is always in contact with the ground while maintaining the optimal bucket travel space.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pick-up type biomass pellet making machine, comprising a machine box (1), a feed port (a) is arranged on one side of the machine box (1), a feeding device is installed at the feed port (a) of the machine box (1), rollers (4) are installed at the four corners of the bottom of the machine box (1), and a steam generator (2) is installed inside the machine box (1); characterized in that The cabinet (1) is internally installed with a double-rolling granulating device, a steam explosion chamber (3) for driving the double-rolling granulating device, and a valve group driven by the steam explosion chamber (3); The feeding device comprises side plates (5) located on both sides of the feed port (a), and a bucket elevator (100) located outside the chassis (1) is installed between the two side plates (5); a guide channel located in the chassis (1) is formed between the two side plates (5) through two mutually parallel guide plates (6); The steam explosion chamber (3) is a hollow tubular structure with a first window (b) formed on its outer circumferential surface. The steam explosion chamber (3) is disposed in a sleeve (7). The outer circumferential surface of the steam explosion chamber (3) can be sealed and rotated against the inner wall of the steam explosion chamber (3). One end of the sleeve (7) is fixedly mounted on the inner wall of the chassis (1). The outer circumferential surface above the sleeve (7) communicates with the flow guide channel. A first gear shaft (8) and a valve stem (9) are respectively fixedly mounted on both ends of the steam explosion chamber (3). The end of the first gear shaft (8) passes through the driving gear (10) and is rotationally connected to the inner wall of the chassis (1). The end of the valve stem (9) passes through the chassis (1) rotationally connected to the valve stem and is connected to the power output shaft end of the motor assembly (11). The valve stem (9) is a hollow tubular structure with one end leading to the interior of the steam explosion chamber (3). The first window (b) corresponds to the bottom of the flow guide channel. The roller-type granulating equipment comprises two extrusion forming rollers (12) which are parallel to each other and in contact with each other, and the outer circumferential surfaces of the extrusion forming rollers (12) are provided with corresponding forming grooves, and when the two extrusion forming rollers (12) are in contact with each other, the forming grooves are interlocked with each other; second gear shafts (13) are respectively installed at both ends of the extrusion forming rollers (12), and the ends of the second gear shafts (13) are rotatably connected to the inner wall of the chassis (1), and first driven gears (14) are respectively installed on the two second gear shafts (13) located at the same end, and the two first driven gears (14) are meshed with each other, and a second driven gear (15) which can mesh with the driving gear (10) is installed on the second gear shaft (13) of one of the extrusion forming rollers (12); The valve assembly comprises a first flange (16) installed at an end surface of a steam explosion chamber (3) and a raft (17) located in the sleeve (7); the first flange (16) is located at the edge of the steam explosion chamber (3); the outer circumferential surface of the raft (17) can be slidably fitted in a keyway at the inner wall of the sleeve (7); a second flange (18) concentric with the raft (17) is arranged at the edge of the raft (17) facing the first flange (16); a valve sleeve (19) which can be sealingly slidably fitted with a valve stem (9) is concentrically arranged inside the raft (17); a first valve hole (20) is radially penetrated on the valve sleeve (19); and a second valve hole (21) is radially penetrated on the valve stem (9); When the apex of the first flange (16) contacts the apex of the second flange (18), the first valve hole (20) and the second valve hole (21) overlap.

2. A pick-up biomass pellet making machine according to claim 1, characterized in that The interior of the sleeve (7) is separated into an independent pressurized air chamber (e) by a sealing valve plate (22), and a spring (23) sleeved on a valve sleeve (19) is arranged inside the pressurized air chamber (e), and the two ends of the spring (23) are respectively pressed between the raft plate (17) and the side wall of the casing (1), and the interior of the pressurized air chamber (e) is connected to the exhaust end of the steam generator (2) through an explosion-proof pipe (24).

3. A pick-up biomass pellet making machine according to claim 1, characterized in that The bottom of the sleeve (7) is provided with a second window (c) corresponding to the first window (b), and the second window (c) is located directly above the two extrusion forming rollers (12). The bottom of the chassis (1) is provided with a third window (d), and the third window (d) is located directly below the two extrusion forming rollers (12).

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