A small straw fuel pellet machine

Abstract

The application discloses a small straw fuel pellet machine, and relates to the technical field of biomass fuel, which comprises a base and a conversion assembly, wherein the conversion assembly comprises a support one rotatably connected to one side of the base, a support two rotatably connected to the other side of the base, and a connecting ring fixedly connected to the middle part of the support one, the middle part of the side, away from the support one, of the connecting ring is fixedly connected with the support two, ring dies are fixedly connected to the upper and lower ends of the connecting ring, a plurality of meshes are formed in the side surface of each ring die, and the inner diameters of the two ring dies are consistent with the inner diameter of the connecting ring. The pellet machine has ring dies with two kinds of hole diameters, the upper and lower ring dies are automatically exchanged by overall overturning, the compression roller is automatically placed in the ring die below due to its own gravity, compared with the existing ring die overturning technology, the problem that the structure is relatively fine and complicated is solved, the manufacturing difficulty is relatively small, the cost is relatively low, the structure is simpler, and the maintenance is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biomass densification forming fuel processing, in particular to a small straw fuel pellet machine. BACKGROUND

[0002] The biomass pellet machine is a kind of biomass densification forming fuel processing equipment, which mainly uses agricultural and forestry processing waste such as straw, rice husk and other biomass as raw material, and forms biomass pellets by pretreating into powder and then solidifying and extruding through the biomass pellet machine, so that the transportation and storage are very convenient.

[0003] At present, the ring die biomass pellet machine is a commonly used type of straw fuel pellet machine, but it still has some deficiencies in use, specifically, the ring die usually only has one aperture, and is packaged inside the equipment, which is not convenient to disassemble and assemble, so when different particle sizes of pellets are needed, it will be time-consuming and laborious to replace the ring die, which is not conducive to improving work efficiency and has certain use limitations.

[0004] In the prior art, such as the vertical ring die biomass pellet machine shown in the authorized announcement CN119175046B, the ring die mechanism is flipped by using the lifting mechanism and the overturning mechanism, so that the pelletizing hole group originally on the top is flipped to the bottom, solving the problem that the aperture of the ring die is single in the prior art, resulting in that it is time-consuming and laborious to replace the ring die when different particle sizes of pellets are prepared, but it still has some inconvenient places in use, specifically, in the technical solution, the ring die mechanism and the barrel are clamped by using the electric push rod and the electromagnet, and then the whole is transferred upward to the outside of the machine body, i.e. the outer machine shell, by the screw rod, and then it is rotated by one hundred and eighty degrees by another motor, and finally it is dropped back to the original position, so the flipping action is relatively complicated, and the close cooperation and participation of multiple electrical equipment are needed, compared with most ring die pellet machines, the design and manufacturing difficulty is larger, the cost is higher, the energy consumption is more, and a lot of dust will inevitably be generated during the feeding, turning and extrusion of the straw, which is very unfavorable for the long-term use of the above-mentioned precision electrical equipment.

[0005] To solve the above problems, a small straw fuel pellet machine is proposed. SUMMARY

[0006] To solve the above technical problems, a small straw fuel pellet machine is provided, which solves the problems raised in the background art.

[0007] To achieve the above purposes, the following technical solutions can be used in the present application:

[0008] The application provides a small straw fuel pellet machine, which comprises a base and a conversion assembly, wherein the conversion assembly comprises a support one rotatably connected to one side of the base, a support two rotatably connected to the other side of the base, and a connecting ring fixedly connected to the middle part of the support one, the middle part of the side, away from the support one, of the connecting ring is fixedly connected to the support two, ring dies are fixedly connected to the upper and lower ends of the connecting ring, a plurality of meshes are formed in the side of each ring die, the inner diameters of the two ring dies are consistent with the inner diameter of the connecting ring, end covers are detachably connected to the ends, away from the connecting ring, of the two ring dies, a feeding cover is rotatably installed on the inner side of each end cover, and the two end covers are fixedly connected to the upper and lower ends of the support one.

[0009] The conversion assembly further comprises a sliding shaft, the two ends of the sliding shaft are correspondingly rotatably connected to the centers of the two end covers, a sliding sleeve is slidably fitted to the outer part of the sliding shaft, pressure rollers are rotatably connected to the two sides of the sliding sleeve, and a material pushing rod is symmetrically arranged on the outer surface of the sliding sleeve between the two pressure rollers.

[0010] Further, the conversion assembly further comprises a worm gear reduction box, a hand wheel crank is fixedly installed at the input end of the worm gear reduction box, the output end of the worm gear reduction box is fixedly connected to the support one, and the worm gear reduction box is correspondingly fixedly installed at one end of the base.

[0011] Further, a speed reducer motor is fixedly installed below the side, away from the connecting ring, of the support one, a chain wheel one is fixedly installed at the driving end of the speed reducer motor, a chain wheel two is fixedly installed at the bottom end of the sliding shaft, and the chain wheel one and the chain wheel two jointly sleeve a chain.

[0012] Further, the application further comprises a material scraping assembly, which comprises two outer cylinders, the two outer cylinders are correspondingly sleeved on the outer parts of the two ring dies, the two outer cylinders and the two ring dies and the connecting ring are concentrically arranged, the ends, away from the connecting ring, of the two outer cylinders are correspondingly rotatably connected to the two end covers, and the ends, away from the end covers, of the two outer cylinders are correspondingly rotatably connected to the upper and lower ends of the connecting ring.

[0013] The material scraping assembly further comprises a double-shaft extension motor installed at one side of the middle part of the connecting ring, one-way bearings are fixedly installed at the two driving ends of the double-shaft extension motor, gears are fixedly installed at the outer rings of each one-way bearing, side surfaces of the two gears are meshingly connected to a gear ring, and the two gear rings are correspondingly fixed to the outer parts of the ends, close to the connecting ring, of the two outer cylinders.

[0014] Further, a discharging cover is slidably fitted to the side, away from the connecting ring, of each outer cylinder, and a scraper is fixedly connected to the inner wall of each outer cylinder.

[0015] Further, a flange observation window is fixedly installed at the side, opposite to the discharging cover, of each outer cylinder.

[0016] Further, the buffer assembly includes two rubber pads arranged above and below the sliding sleeve, the centers of the two rubber pads are respectively slidingly fitted on the outer upper and lower sides of the sliding shaft, and the two rubber pads are respectively fixedly installed with springs close to one side of the sliding sleeve, the two springs are respectively sleeved on the outer part of the sliding shaft, and the ends of the two springs away from the rubber pads are respectively fixedly connected with the upper and lower ends of the sliding sleeve.

[0017] The outer parts of the two rubber pads are respectively fixedly installed with corrugated expansion sleeves, the two corrugated expansion sleeves are respectively sleeved on the outer parts of the two springs, and the ends of the two corrugated expansion sleeves away from the rubber pads are respectively fixedly connected with the upper and lower ends of the sliding sleeve.

[0018] Further, the lower part of the base is fixedly installed with a conveying belt.

[0019] As described above, the small straw fuel pellet machine has the following characteristics and advantages:

[0020] The pellet machine has two ring dies with different diameters, and the position of the upper and lower ring dies can be directly exchanged, so that the particle size can be quickly changed, the existing technology usually only encapsulates a single die inside the pellet machine, which is not convenient for disassembly and replacement, and is not conducive to quickly changing the particle size, which limits the use of the pellet machine to a certain extent, and the effect is that compared with the existing technology, if the upper and lower ring dies have the same diameter, they can be used as backup for each other, which can deal with the sudden damage of one of them and effectively prolong the service life of the pellet machine under the condition of continuous wear of the ring dies, and effectively achieve the continuity of biomass densification molding fuel processing.

[0021] The pellet machine is directly driven by a worm gear reducer box, and the whole pellet machine is turned by one hundred and eighty degrees, the position of the ring die is automatically exchanged, and the compression roller automatically falls into the ring die below due to its own gravity, compared with the existing ring die turning technology, the structure is relatively simple, and the effect is that the biomass densification molding fuel processing and manufacturing difficulty is smaller, the cost is lower, and the structure is simpler and more convenient to maintain.

[0022] When the position of the upper and lower ring dies is converted, the mass of the compression roller is large, and if it directly hits the end cover along the sliding shaft, the structure will be damaged, which is not conducive to long-term use, the rubber pad is used to pre-contact the end cover, and the deformation of the spring is used to buffer the above impact, which solves the problem that the structure is easily damaged by impact, thereby being conducive to the service life of the maintenance structure, and the rubber pad can also clean the dust accumulated in the key groove of the sliding shaft when it slides on the sliding shaft, which alleviates the influence of dust on the precise fitting mechanism in the existing technology, thereby maintaining the use stability of the conversion function and achieving the effect of prolonging the service life.

[0023] This pellet mill uses a dual-shaft extension motor in conjunction with a one-way bearing to achieve the goal of controlling the forward and reverse rotation of the dual-shaft extension motor so that only the lower outer cylinder and the scraper installed inside it rotate, while the upper outer cylinder remains undriven. This prevents the upper outer cylinder from rotating meaninglessly, reduces the load on the dual-shaft extension motor, and ultimately achieves the effect of reducing energy consumption, making it more energy-efficient and environmentally friendly, and solving the problem of separate driving of the outer cylinder. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the assembly of the ring mold structure shown in this invention;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure after removing the ring mold structure;

[0027] Figure 4 for Figure 3 A schematic diagram of the exploded structure;

[0028] Figure 5 This is a schematic diagram of the assembly between the sliding sleeve, the feeding rod, and the pressure roller as shown in this invention;

[0029] Figure 6 This is a schematic diagram showing the fit between the scraper assembly and the ring die according to the present invention;

[0030] Figure 7 for Figure 6 Another perspective diagram of the structure;

[0031] Figure 8 This is a schematic diagram of the discharge cover in the open state as shown in this invention;

[0032] Figure 9 This is a schematic diagram of the assembly between the buffer assembly, the sliding shaft, and the sliding sleeve shown in this invention;

[0033] Figure 10 for Figure 9 A schematic diagram of the decomposition of the middle part of the structure.

[0034] The reference numerals in the appendix of this invention are as follows:

[0035] 11. Base; 12. Conveyor belt;

[0036] Conversion Components: 21. Bracket 1; 22. Bracket 2; 23. Worm Gear Reducer; 24. Connecting Ring; 25. End Cap; 251. Feeding Cover; 26. Ring Die; 261. Mesh; 27. Sliding Shaft; 28. Sliding Sleeve; 281. Feeding Rod; 29. ​​Pressure Roller;

[0037] 31, reduction motor; 32, sprocket one; 33, sprocket two; 34, chain;

[0038] Scraping assembly: 41, outer cylinder; 42, gear ring; 43, double shaft extension motor; 44, one-way bearing; 45, gear; 46, discharge cover; 47, scraper; 48, flange observation window;

[0039] Buffer assembly: 51, rubber pad; 52, spring; 53, corrugated telescopic sleeve. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0041] Referring to Figures 1-10 As shown in the embodiments of the present application, a small straw fuel pellet machine will be described in detail as follows:

[0042] A small straw fuel pellet machine comprises a base 11, and a conveyor belt 12 is fixedly installed below the base 11 and used to convey processed pellets.

[0043] Referring to Figures 2-4 As shown, it also comprises a conversion assembly, which is mainly used to solve the problem that the existing pellet machine has a single mesh size of the mold, is inconvenient to disassemble and replace, and is not conducive to quickly converting the pellet size, thereby reducing the use limitation. The conversion assembly comprises a bracket one 21 rotatably connected to one side of the base 11, a bracket two 22 rotatably connected to the other side of the base 11, and a link ring 24 fixedly connected to the middle part of the bracket one 21, and the bracket one 21 and the bracket two 22 are arranged on opposite sides, the middle part of the side away from the bracket one 21 of the link ring 24 is fixedly connected with the bracket two 22, and the upper and lower ends of the link ring 24 are both fixedly connected with a ring mold 26, a plurality of meshes 261 are arranged on the side of each ring mold 26, the inner diameters of the two ring molds 26 are consistent with the inner diameter of the link ring 24, and the end of each ring mold 26 away from the link ring 24 is detachably connected with an end cover 25, and the ring mold 26 and the end cover 25 are detachably connected through bolts and nuts, and the inside of each end cover 25 is rotatably installed with a feeding cover 251, and the upper and lower ends of the two end covers 25 are fixedly connected with the bracket one 21.

[0044] Referring to Figures 3-5As shown, the conversion assembly further comprises a sliding shaft 27, both ends of the sliding shaft 27 are correspondingly rotatably connected at the center of the two end covers 25, a sliding sleeve 28 is slidingly fitted on the outer portion of the sliding shaft 27, both sides of the sliding sleeve 28 are rotatably connected with the pressure rollers 29, and a strip-shaped groove is equidistantly formed on the outer surface of the sliding shaft 27, the strip-shaped groove is matched with the middle sliding slot of the sliding sleeve 28, the strip-shaped groove and the sliding sleeve 28 form a limiting sliding fit, and a material pushing rod 281 is symmetrically arranged on the outer surface of the sliding sleeve 28 between the two pressure rollers 29, and both inner ends of the two material pushing rods 281 are fixedly connected with the side surface of the sliding sleeve 28.

[0045] The above-mentioned ring mold 26, outer cylinder 41 and the like between the upper and lower sides are rotated by 180 degrees by the support 21 to exchange positions, at this time, the upper and lower ends of the sliding shaft 27 are also exchanged, in the deflection process of the sliding shaft 27, the sliding sleeve 28 automatically slides to the lower part of the sliding shaft 27 under the action of its own gravity and the pressure roller 29 and the like, in this way, the sliding sleeve 28, the pressure roller 29 and the material pushing rod 281 will automatically move to the other ring mold 26, achieving the effect of quick conversion between different ring molds 26, and the structure is simple and easy to realize, and has practicality.

[0046] In addition, in the granulator, when one ring mold 26 is in the upper position, since the upper and lower ring molds 26 are in a connected state, the upper ring mold 26 will automatically serve as the position of the existing feeding hopper of the granulator, in use, the raw materials enter the upper ring mold 26 through the feeding cover 251, and then fall into the lower ring mold 26, so that the feeding is realized, in this way, it is not necessary to additionally add a feeding hopper on the upper part of the granulator, which is beneficial to the miniaturization of the equipment.

[0047] Referring to Figure 1 As shown, the conversion assembly further comprises a worm gear reduction box 23, a hand wheel crank is fixedly installed at the input end of the worm gear reduction box 23, and the output end of the worm gear reduction box 23 is fixedly connected with the support 21, and the worm gear reduction box 23 is correspondingly fixedly installed at one end of the base 11.

[0048] In the embodiment, the worm gear reduction box 23 adopts the existing technology, the input part is a worm, the output part is a worm gear, and the two are meshed and connected, and the worm gear can be rotated by rotating the worm.

[0049] The worker rotates the hand wheel crank, and through the transmission of the worm gear reduction box 23, the rotating torque can be transmitted to the support 21, and then the support 21 is rotated, the support 21 drives the connecting ring 24 to rotate through the support of the support 22, until the connecting ring 24, the ring mold 26 and the sliding shaft 27 are rotated to the vertical state, and due to the self-locking structure characteristics of the worm gear, the above-mentioned vertical state is stable, and the quick conversion between the upper and lower ring molds 26 is realized.

[0050] Referring toFigures 2-4 As shown in the drawings, the support 21 is fixedly installed with a speed reducer motor 31 below the side away from the adapter ring 24, the driving end of the speed reducer motor 31 is fixedly installed with a sprocket 32, the bottom end of the sliding shaft 27 is fixedly installed with a sprocket 33, and the strip-shaped groove on the sliding shaft 27 is insertedly connected with the connecting end of the sprocket 33. The purpose of starting the sprocket 33 to drive the sliding shaft 27 is that the sprocket 32 and the sprocket 33 are jointly sleeved with a chain 34, and the sprocket 32 drives the sprocket 33 through the chain 34.

[0051] Referring to Figure 1 and Figures 6-8 As shown in the drawings, the device further comprises a scraping assembly, which comprises two outer cylinders 41, the two outer cylinders 41 are respectively sleeved on the outside of the two ring dies 26, and the two outer cylinders 41 are concentrically arranged with the two ring dies 26 and the adapter ring 24. The end of the two outer cylinders 41 away from the adapter ring 24 is respectively rotatably connected with the two end covers 25, and the end of the two outer cylinders 41 away from the end covers 25 is respectively rotatably connected with the upper and lower ends of the adapter ring 24.

[0052] Further, the scraping assembly further comprises a double-shaft extension motor 43 installed on one side of the middle part of the adapter ring 24. The two driving ends of the double-shaft extension motor 43 are fixedly installed with unidirectional bearings 44. The outer rings of each unidirectional bearing 44 are fixedly installed with a gear 45. The side surfaces of the two gears 45 are meshingly connected with a gear ring 42. The two gear rings 42 are respectively fixed on the outside of the end of the two outer cylinders 41 close to the adapter ring 24.

[0053] The end of each outer cylinder 41 away from the adapter ring 24 is slidably connected with a discharge cover 46. The inner wall of each outer cylinder 41 is fixedly connected with a scraper 47. The two unidirectional bearings 44 are installed on the two shafts of the double-shaft extension motor 43 in opposite rotating directions.

[0054] When the double-shaft extension motor 43 rotates forward, only one of the unidirectional bearings 44 can drive the gear 45 outside it to rotate. When the double-shaft extension motor 43 reverses, only the other unidirectional bearing 44 can drive the gear 45 outside it to rotate. The purpose of the above is to control the forward and reverse rotation of the double-shaft extension motor 43, so that only the outer cylinder 41 below and the scraper 47 installed thereon rotate, and the outer cylinder 41 above remains undriven. This can reduce the load of the double-shaft extension motor 43, ultimately achieving the effect of reducing energy consumption and being more energy-saving and environmentally friendly.

[0055] In this embodiment, the granulator further comprises a control panel for controlling the use of each motor and the conveyor belt 12. The circuit conduction and signal control involved above are existing mature technologies, and will not be described in detail here.

[0056] Referring to Figure 6As shown, the side of each outer cylinder 41 is fixedly installed with a flange observation window 48 at the opposite side of the discharge cover 46, facilitating observation of the granulation process.

[0057] Referring to Figures 9-10 As shown, it also includes a buffer assembly, which includes two rubber pads 51 arranged above and below the sliding sleeve 28, the centers of the two rubber pads 51 are respectively slidingly fitted on the outer upper and lower sides of the sliding shaft 27, and the two rubber pads 51 are close to the upper and lower sides of the sliding sleeve 28, the side of the two rubber pads 51 close to the sliding sleeve 28 is fixedly installed with a spring 52, and the two springs 52 are respectively correspondingly sleeved on the outer part of the sliding shaft 27, and the ends of the two springs 52 away from the rubber pads 51 are respectively fixedly connected with the upper and lower ends of the sliding sleeve 28.

[0058] The outer part of the two rubber pads 51 is fixedly installed with a corrugated expansion sleeve 53, the two corrugated expansion sleeves 53 are respectively correspondingly sleeved on the outer part of the two springs 52, and the ends of the two corrugated expansion sleeves 53 away from the rubber pads 51 are respectively fixedly connected with the upper and lower ends of the sliding sleeve 28.

[0059] In this embodiment, when the sliding sleeve 28 slides to the lowest end of the sliding shaft 27, its gravitational potential energy is converted into kinetic energy, and due to the large mass of the compression roller 29, the impact force of the sliding sleeve 28 on the end cover 25 is large, which is easy to damage the structure, so the rubber pad 51 is used to pre-contact the end cover 25, and then through the action of the spring 52 when it is deformed by the sliding sleeve 28, the above impact is buffered, thereby facilitating the service life of the structure, at the same time, when the rubber pad 51 slides on the sliding shaft 27, it can also clean the dust accumulated in the key groove of the sliding shaft 27, so that the smoothness of the free sliding of the sliding sleeve 28 is guaranteed, and the corrugated expansion sleeve 53 on the outside is also used to isolate dust.

[0060] In combination with the above-mentioned embodiments, the following is the entire working process and working principle of the above-mentioned embodiments:

[0061] The working state is: the worker rotates the hand wheel handle, transmits the rotating torque to the support one 21 through the transmission of the worm gear reduction box 23, and then drives the support one 21 to rotate, the support one 21 drives the adapter ring 24 to rotate through the support of the support two 22, until the adapter ring 24, the ring die 26, the outer cylinder 41 and the sliding shaft 27 are rotated to the vertical state, and due to the self-locking structure characteristics of the worm gear, the above-mentioned vertical state is kept stable.

[0062] The speed reduction motor 31 is controlled by the control panel to work, and then drives the chain wheel one 32 to rotate, drives the chain wheel two 33 through the chain 34 transmission, and finally makes the sliding shaft 27 rotate, and since the sliding shaft 27 is a spline shaft, it drives the sliding sleeve 28 to rotate, and finally makes the compression roller 29 revolve around the sliding shaft 27 as the center.

[0063] Similarly, the double-shaft stretching motor 43 works through the control panel instructions, at this time, the upper drive end cannot drive the upper gear 45 to rotate under the action of the upper one-way bearing 44, but the lower drive end drives the lower gear 45 to rotate under the action of the lower one-way bearing 44, thereby transmitting through the tooth ring 42 engaged therewith, only making the lower outer cylinder 41 rotate, and driving the scraper 47 installed on the inner wall thereof to rotate against the outer surface of the corresponding ring die 26.

[0064] Then open the upper feeding cover 251, put in the crushed straw, and the straw pieces fall into the lower ring die 26 through the upper ring die 26. Since the compression roller 29 continuously rolls on the inner surface of the lower ring die 26, the straw pieces are pressed into the mesh 261. Under the shaping of the inner hole of the mesh 261, the elongated columnar material is finally formed. When continuously pressing the straw pieces into the mesh 261, the formed columnar material is slowly extruded outward, and then under the scraping action of the scraper 47 continuously rotating against the outer surface of the ring die 26, the columnar material is cut into particles. The cut particles fall into the annular gap between the end cover 25, the ring die 26, the adapter ring 24 and the outer cylinder 41. Since the scraper 47 is consistent with the width of the above-mentioned annular gap, the particles are finally discharged from the opened discharge cover 46 through the scraping of the scraper 47, and finally fall into the lower conveying belt 12. At this time, the conveying belt 12 is controlled to work through the control panel, and the particles can be output.

[0065] During the granulation process, the shifting sleeve 28 drives the raking rod 281 to rotate synchronously, so that the straw pieces can be continuously loosened, avoiding material accumulation and thus causing the compression roller 29 to run poorly. At the same time, the raking rod 281 can intercept the material between the compression roller 29 and the raking rod 281 to avoid the problem of material running.

[0066] When it is necessary to switch to use the upper ring die 26, the above steps are repeated, and the upper and lower ring dies 26, the outer cylinder 41, etc. are rotated by 180 degrees by the support 21 to exchange positions. At this time, the upper and lower ends of the sliding shaft 27 are also exchanged. During the deflection of the sliding shaft 27, the sliding sleeve 28 automatically slides downward along the sliding shaft 27 under the action of its own gravity and the pressure roller 29. In this way, the sliding sleeve 28, the pressure roller 29, and the poking rod 281 will automatically move to the other ring die 26. When the sliding sleeve 28 slides to the lowest end of the sliding shaft 27, the potential energy is converted into kinetic energy, causing the sliding sleeve 28 to quickly impact the end cover 25. Because the pressure roller 29 has a large mass, direct impact will damage the structure and is not conducive to long-term use. Therefore, when the sliding sleeve 28 slides to the lowest end of the sliding shaft 27, the rubber pad 51 is used to pre-contact the end cover 25. When the sliding sleeve 28 is extruded and deformed, the spring 52 is used to buffer the impact, thereby prolonging the service life of the structure. At the same time, the rubber pad 51 can also be used as a cleaning tool when it slides on the sliding shaft 27. Dust accumulated in the keyway of the sliding shaft 27 will not enter between the sliding sleeve 28 and the sliding shaft 27, thereby maintaining the stability of the use of the above conversion function. Similarly, the external corrugated sleeve 53 is also used to isolate dust from entering between the sliding sleeve 28 and the sliding shaft 27, as well as between the rubber pad 51 and the spring 52. Impacting the end cover 25 can also shake the material powder attached to the surface of the end cover 25 to fall down.

[0067] After the above structure is converted and stabilized, the feeding cover 251 and the discharging cover 46 are opened, and the inside of the lower ring die 26 and the outer cylinder 41 can be cleaned. Finally, the above particle preparation method is used again to achieve the effect of quickly converting to use another ring die 26. It is easy to think that by setting the aperture of the mesh 261 on the two ring dies 26 to be inconsistent in size, the preparation of two kinds of particle size particles can be quickly converted.

[0068] After the above position conversion, it should be noted that the double-shaft extension motor 43 should be controlled to rotate in the opposite direction. In this way, the upper drive end cannot drive the gear 45 above to rotate under the action of the upper one-way bearing 44, but the lower drive end drives the gear 45 below to rotate under the action of the lower one-way bearing 44. Through the transmission of the tooth ring 42 engaged with it, only the lower outer cylinder 41 is rotated, and the scraper 47 installed on the inner wall is also rotated along the outer surface of the corresponding ring die 26.

[0069] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the words recited in the appended claims. The scope of the present application shall be limited only by the claims.

[0070] While the embodiments of the application have been shown and described herein, it is to be understood that the application is not limited to these embodiments. Rather, numerous modifications are possible without departing from the spirit and scope of the present application as delineated by the claims and their equivalents.

Claims

1. A small-sized straw fuel pellet machine comprising a base (11), characterized in that: The conversion assembly further comprises a sliding shaft (27), both ends of the sliding shaft (27) are correspondingly rotatably connected at the centers of the two end covers (25), the outer portion of the sliding shaft (27) is slidably fitted with a sliding sleeve (28), both sides of the sliding sleeve (28) are rotatably connected with pressing rollers (29), and a material pushing rod (281) is symmetrically arranged on the outer surface of the sliding sleeve (28) between the two pressing rollers (29), and the inner ends of the two material pushing rods (281) are correspondingly fixedly connected with the side surfaces of the sliding sleeve (28). The conversion assembly further comprises a worm gear reduction box (23), an input end of the worm gear reduction box (23) is fixedly installed with a hand wheel crank, and an output end of the worm gear reduction box (23) is fixedly connected with the support (21), and the worm gear reduction box (23) is correspondingly fixedly installed at one end of the base (11).

2. A small straw fuel pellet machine according to claim 1, characterized in that: A reduction motor (31) is fixedly installed below the side of the support (21) away from the adapter ring (24), a chain wheel (32) is fixedly installed at the driving end of the reduction motor (31), a chain wheel (33) is fixedly installed at the bottom end of the sliding shaft (27), and the chain wheel (32) and the chain wheel (33) are coaxially arranged and jointly sleeved with a chain (34).

3. A small straw fuel pellet machine according to claim 2, characterized in that: The scraping assembly further comprises a double-shaft extension motor (43) installed at one side of the middle portion of the adapter ring (24), one-way bearings (44) are fixedly installed at the two driving ends of the double-shaft extension motor (43), gears (45) are fixedly installed at the outer rings of the one-way bearings (44), and the side surfaces of the two gears (45) are meshingly connected with a gear ring (42), and the two gear rings (42) are correspondingly fixedly installed at the outer portions of the two outer cylinders (41) close to the adapter ring (24).

4. A small straw fuel pellet machine according to claim 3, characterized in that: The scraping assembly further comprises a double-shaft extension motor (43) installed at one side of the middle portion of the adapter ring (24), one-way bearings (44) are fixedly installed at the two driving ends of the double-shaft extension motor (43), gears (45) are fixedly installed at the outer rings of the one-way bearings (44), and the side surfaces of the two gears (45) are meshingly connected with a gear ring (42), and the two gear rings (42) are correspondingly fixedly installed at the outer portions of the two outer cylinders (41) close to the adapter ring (24). ​ 5. A small straw fuel pellet machine according to claim 4, characterized in that: The outer cylinder (41) is slidably connected with the discharge cover (46) at one end of the adapter ring (24), and the inner wall of the outer cylinder (41) is fixedly connected with the scraper (47).

6. A small straw fuel pellet machine according to claim 5, characterized in that: The flange observation window (48) is fixedly installed at the side of the outer cylinder (41) opposite to the discharge cover (46).

7. A small straw fuel pellet machine according to claim 6, characterized in that: The buffer assembly includes two rubber pads (51) arranged above and below the sliding sleeve (28), the centers of the two rubber pads (51) are slidably connected with the outer sides of the sliding shaft (27), one side of each rubber pad (51) close to the sliding sleeve (28) is fixedly installed with the spring (52), the two springs (52) are correspondingly sleeved on the outer sides of the sliding shaft (27), and the ends of the two springs (52) away from the rubber pads (51) are fixedly connected with the upper and lower ends of the sliding sleeve (28) respectively. The outer sides of the two rubber pads (51) are fixedly installed with the corrugated telescopic sleeves (53), the two corrugated telescopic sleeves (53) are correspondingly sleeved on the outer sides of the two springs (52), and the ends of the two corrugated telescopic sleeves (53) away from the rubber pads (51) are fixedly connected with the upper and lower ends of the sliding sleeve (28) respectively.

8. A small straw fuel pellet machine according to claim 7, characterized in that: The conveyor belt (12) is fixedly installed below the base (11).

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