A biomass energy particle crushing device and its crushing method

Abstract

The present invention relates to the technical field of crushing devices, and specifically discloses a biomass energy particle crushing device and a crushing method thereof, including a machine body, a crushing mechanism arranged on the machine body. The crushing mechanism includes a crushing chamber, a crushing shaft rotatably installed in the crushing chamber, a crushing driving member for driving the crushing shaft to rotate, a plurality of crushing units arranged on the crushing shaft, a piston movably assembled in the crushing chamber, and a linear driving member for driving the piston to reciprocate so as to compact the straw in the crushing chamber or retreat; each crushing unit includes a moving sleeve sleeved on the crushing shaft and axially moving along the crushing shaft, a compression spring connecting the moving sleeve, a cutter rotatably installed on the moving sleeve through an adjusting shaft, an adjusting gear arranged on the adjusting shaft, and a rack fixed on the crushing shaft for driving the adjusting gear to rotate. The biomass energy particle crushing device and the crushing method thereof improve the crushing efficiency and the crushing quality through the synergistic effect of compaction, dispersion and cutting.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing devices, and particularly relates to a biomass energy particle crushing device and a crushing method thereof. Background Art

[0002] With the continuous growth of global energy consumption and the increasing depletion of fossil energy, biomass energy, as a renewable energy source, has been increasingly valued by countries around the world. The production of biomass fuel usually includes a series of processes such as collecting crop wastes (such as straw, rice husks, etc.), drying, crushing, batching, hot compression, forming, granulating, etc. Among them, the crushing link is an important step in the production of biomass fuel, and its purpose is to process biomass raw materials into particle sizes that meet the requirements of subsequent forming processes, thereby improving the combustion efficiency and forming quality of the fuel.

[0003] In the prior art, for a straw crushing device, such as a crop straw crushing and sieving device disclosed in a Chinese patent document with the authorization announcement number CN113578500B, the crushing unit and the cutting unit of the crop straw crushing and sieving device drive the crushing knife to rotate through a crushing roller, so that the crushing knife performs cutting and crushing operations on the crop straw, and drives the driven gear and the driven round rod to rotate through the transmission gear. The driven round rod drives the lower pressing plate and the cutting knife to perform secondary cutting and crushing treatment on the crushed crop straw through a cam and a sliding round rod, which can completely crush the crop straw and improve the crushing quality and efficiency of the crop straw.

[0004] However, in the working process of the above-mentioned crop straw crushing and sieving device in the prior art, due to the high fiber content and certain flexibility of the straw, the tool may not be able to cut or crush the straw sufficiently during cutting, resulting in the straw being dragged, stretched or curled rather than completely broken, which affects the crushing effect. Summary of the Invention

[0005] The present invention provides a biomass energy particle crushing device and a crushing method thereof, aiming to solve the problems in the prior art that the crop straw crushing and sieving device has poor adaptability to straw raw materials and is prone to insufficient crushing and uneven crushing particle sizes.

[0006] The biomass energy particle crushing device provided by the present invention adopts the following technical solutions:

[0007] A biomass energy particle crushing device, including a machine body and a crushing mechanism arranged on the machine body. The crushing mechanism includes a crushing bin, a crushing shaft extending along the length direction of the crushing bin and rotatably installed in the crushing bin, a crushing driving member for driving the crushing shaft to rotate, a plurality of crushing units arranged on the crushing shaft along the axial direction of the crushing shaft, a piston movably assembled in the crushing bin along the length direction of the crushing bin, and a linear driving member for driving the piston to reciprocate so as to compact the straw in the crushing bin or retract.

[0008] Each of the crushing units includes a moving sleeve movably sleeved on the crushing shaft along the axial direction of the crushing shaft, a compression spring connected to the moving sleeve, a cutter for cutting straw rotatably installed on the moving sleeve through an adjusting shaft, an adjusting gear arranged on the adjusting shaft, and a rack fixed on the crushing shaft for driving the adjusting gear to rotate.

[0009] When the piston compacts the straw in the crushing bin, it can push the moving sleeve to move, so that the adjusting gear meshes with the rack, thereby driving the cutter to rotate along with the adjusting shaft until the cutter surface faces the piston. When the piston retracts, the compression spring can drive the moving sleeve to reset, so that the cutter surface pushes the straw in the crushing bin to be scattered.

[0010] Adopting the above technical solution, through the synergistic effect of compaction, scattering and cutting, the distribution density and uniformity of straw can be flexibly controlled during the straw crushing process, making the straw easier to be cut and crushed, improving the crushing efficiency, more easily achieving a uniform crushing effect, reducing the difference in crushing particle size, being applicable to processing straw with a high fiber content and certain flexibility. In addition, by adjusting the frequency and intensity of compaction and scattering, and coordinating with the cutting action of the cutter, the crushing device can adapt to different types and states of straw, improving the versatility of the device.

[0011] Further, sliding grooves corresponding to each crushing unit are formed on the crushing shaft. The sliding grooves extend along the axial direction of the crushing shaft. The adjusting shaft is movably assembled in the sliding grooves. The sliding grooves include a first groove body and a second groove body located on the side of the first groove body away from the piston. The width of the first groove body is adapted to the diameter of the adjusting shaft. A key groove is formed on the adjusting shaft. The width of the second groove body is adapted to the key groove of the adjusting shaft.

[0012] Further, the sliding groove further includes a variable-diameter groove body communicating between the first groove body and the second groove body. The variable-diameter groove body gradually narrows from the first groove body to the second groove body.

[0013] Adopting the above technical solution, the variable-diameter groove body, as the transition part between the two groove bodies, is used to allow the adjusting shaft to smoothly move and rotate between the two groove bodies with different widths, so as to realize the adjustment of the position and angle of the cutter.

[0014] Further, each of the crushing units further includes a torsion spring connected between the adjusting shaft and the moving sleeve.

[0015] Further, a plurality of protrusions are symmetrically arranged on two cutting surfaces of each of the cutting tools, and the top ends of the protrusions are in a conical shape with a smaller upper part and a larger lower part.

[0016] With the above technical solution, the protrusions can increase the contact area between the cutting tool and the straw, form multiple shear points during rotation, significantly improve the shear efficiency, and can also push and disperse the straw after the cutting tool cuts the straw to change the position of the straw, so that when the cutting tool cuts the same position next time, more materials can be effectively cut.

[0017] Further, each of the crushing units further includes a telescopic sleeve connected to the moving sleeve, and an accommodation chamber for accommodating a compression spring is formed between the telescopic sleeve and the crushing shaft.

[0018] With the above technical solution, the telescopic sleeve is used to prevent particles during the crushing process from entering the accommodation chamber and affecting the performance of the compression spring.

[0019] Further, the number of cutting tools in each of the crushing units is two, and the two cutting tools are symmetrically distributed with respect to the crushing axis.

[0020] With the above technical solution, the symmetrically distributed cutting tools help to maintain the rotational balance of the crushing shaft, reduce vibration, extend the service life of the equipment, and at the same time can increase the number of times of cutting the straw per unit time, ensure that the straw is evenly cut and crushed during the crushing process, improve the crushing efficiency and quality, and better adapt to straw with a high fiber content and certain flexibility.

[0021] Further, the biomass energy particle crushing equipment further includes a crushing mechanism arranged on the machine body and above the crushing mechanism. The crushing mechanism includes a crushing chamber, a crushing shaft extending along the length direction of the crushing chamber and rotatably installed in the crushing chamber, and a plurality of crushing units arranged on the crushing shaft along the axial direction of the crushing shaft. The lower end of the crushing chamber has a discharge port, the upper end of the crushing chamber has a feed port, and the feed port is communicated with the discharge port.

[0022] With the above technical solution, the multiple crushing knives of the crushing mechanism can preliminarily crush the straw, pre-cut the large pieces of straw into smaller segments, so that it is easier to be further crushed when entering the crushing mechanism, and can make the crushing mechanism more efficiently complete the fine crushing work.

[0023] Further, the number of the crushing mechanisms is two, the two crushing mechanisms are arranged side by side, the discharge ports of the two crushing mechanisms are communicated with each other, and the crushing driving parts of the two crushing mechanisms respectively drive the crushing shafts to rotate in opposite directions.

[0024] With the above technical solution, when the larger-sized straw that has not been effectively crushed in the crushing bin enters the feeding ports of the two pulverizing bins, it can be subjected to the bidirectional shearing force and impact force of the two pulverizing shafts to make up for the part that has not been effectively crushed in the crushing bin, ensuring a more uniform crushing effect of the straw before it enters the pulverizing bin.

[0025] The present invention also provides a method for pulverizing biomass energy particles, comprising the following steps:

[0026] First step, feeding: Put the straw to be pulverized into the pulverizing bin.

[0027] Second step, pulverizing: Start the pulverizing driving member, and the pulverizing driving member drives the pulverizing shaft to drive a plurality of pulverizing units to rotate around the pulverizing shaft, and the cutting tools cut and pulverize the straw.

[0028] Third step, dispersing: Start the linear driving member, and the linear driving member drives the piston to reciprocate so that the piston compresses the straw in the pulverizing bin or retracts. When the piston compresses the straw in the pulverizing bin, it pushes the moving sleeve to move, and the moving sleeve drives the adjusting shaft to move until the adjusting gear meshes with the rack, and the adjusting gear drives the cutting tool to rotate with the adjusting shaft until the cutting surface faces the piston. When the piston retracts, the compression spring drives the moving sleeve to reset, and the cutting surface of the cutting tool pushes the straw in the pulverizing bin to be dispersed.

[0029] Fourth step, discharging: Discharge the pulverized straw from the pulverizing bin.

[0030] The beneficial effects of the biomass energy particle pulverizing equipment and its pulverizing method provided by the present invention are as follows: Through the synergistic action of compaction, dispersion and cutting, the distribution density and uniformity of the straw can be flexibly controlled during the straw pulverizing process, making the straw easier to be cut and pulverized, improving the pulverizing efficiency, more easily achieving a uniform pulverizing effect, reducing the difference in pulverizing particle size, being applicable to processing straw with a high fiber content and certain flexibility. In addition, by adjusting the frequency and strength of compaction and dispersion, and coordinating with the cutting action of the cutting tool, the pulverizing equipment can adapt to different types and states of straw, improving the versatility of the equipment. Description of the Drawings

[0031] Figure 1 is a schematic structural diagram of the biomass energy particle pulverizing equipment of the present invention.

[0032] Figure 2 is a schematic structural diagram of the biomass energy particle pulverizing equipment of the present invention from another perspective.

[0033] Figure 3 is a schematic structural diagram of the crushing mechanism and the pulverizing mechanism of the biomass energy particle pulverizing equipment of the present invention.

[0034] Figure 4It is a schematic structural diagram of the crushing mechanism and the pulverizing mechanism of the biomass energy particle crushing equipment of the present invention from another perspective.

[0035] Figure 5 It is a schematic structural diagram of the pulverizing mechanism of the biomass energy particle crushing equipment of the present invention.

[0036] Figure 6 It is a schematic structural diagram of the pulverizing unit of the biomass energy particle crushing equipment of the present invention.

[0037] Reference numerals:

[0038] 10, body; 20, crushing mechanism; 210, crushing chamber; 211, feeding port; 220, crushing shaft; 230, crushing unit; 240, transmission belt; 30, pulverizing mechanism; 310, pulverizing chamber; 320, pulverizing shaft; 330, pulverizing driving member; 331, motor; 332, transmission shaft; 333, driving gear; 334, driven gear; 340, pulverizing unit; 350, piston; 360, linear driving member; 370, sliding groove; 371, first groove body; 372, variable-diameter groove body; 373, second groove body; 410, moving sleeve; 420, compression spring; 430, adjusting shaft; 431, keyway; 440, cutter; 441, protrusion; 450, adjusting gear; 460, rack; 470, torsion spring; 480, telescopic sleeve; 50, discharge bin. Detailed implementation manners

[0039] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0040] As Figure 1 shown, an embodiment of the biomass energy particle crushing equipment of the present invention, which is used for crushing straw, includes a body 10, a crushing mechanism 20, a pulverizing mechanism 30 and a discharge bin 50. The crushing mechanism 20, the pulverizing mechanism 30 and the discharge bin 50 are arranged on the body 10 in sequence from top to bottom. Among them, the crushing mechanism 20 is used for initially crushing the straw, the pulverizing mechanism 30 is used for finely pulverizing the straw after initial crushing, and the discharge bin 50 is used for collecting and discharging the crushed straw particles.

[0041] As Figures 1 to 3As shown, the crushing mechanism 20 includes a crushing bin 210 fixed to the machine body 10, a crushing shaft 220 extending along the length direction of the crushing bin 210 and rotatably installed in the crushing bin 210, a transmission belt 240 connecting the crushing shaft 220 to drive the crushing shaft 220 to rotate, and a plurality of crushing units 230 axially arranged on the crushing shaft 220 along the axial direction of the crushing shaft 220. Each crushing unit 230 includes a plurality of crushing knives fixed to the crushing shaft 220 along the circumferential direction of the crushing shaft 220 for cutting straw. The upper part of the crushing bin 210 has a feeding port 211 for feeding the straw to be crushed into the crushing bin 210. The lower end of the crushing bin 210 has a discharge port for discharging the preliminarily crushed straw from the crushing bin 210. The plurality of crushing knives of the crushing mechanism 20 can preliminarily crush the straw, pre-cut the large pieces of straw into smaller segments, so that it is easier to be further crushed when entering the pulverizing mechanism 30, and the pulverizing mechanism 30 can complete the fine pulverization work more efficiently.

[0042] As Figures 1 to 5 shown, the number of the pulverizing mechanisms 30 is two, and the two pulverizing mechanisms 30 are arranged side by side. Each pulverizing mechanism 30 includes a pulverizing bin 310, a pulverizing shaft 320 extending along the length direction of the pulverizing bin 310 and rotatably installed in the pulverizing bin 310, a pulverizing driving member 330 for driving the pulverizing shaft 320 to rotate, a plurality of pulverizing units 340 axially arranged on the pulverizing shaft 320 along the axial direction of the pulverizing shaft 320, a piston 350 movably assembled in the pulverizing bin 310 along the length direction of the pulverizing bin 310, and a linear driving member 360 for driving the piston 350 to reciprocate to compact the straw in the pulverizing bin 310 or retract.

[0043] Each crushing bin 310 is in the shape of a horizontally extending cylinder, and the upper end of the crushing bin 310 has a feed inlet. A plurality of sieve holes communicating with the discharge bin 50 are provided on the lower side wall of the crushing bin 310. The discharge ports of the two crushing bins 310 are interconnected and communicate with the discharge port of the upper crushing bin 210. The straw preliminarily crushed by the crushing mechanism 20 drops through the discharge port of the crushing bin 210, and then enters the crushing bin 310 through the feed inlet of the crushing bin 310 to be finely crushed by the crushing unit 340 on the crushing shaft 320. It should be noted that the crushing drive members 330 of the two crushing mechanisms 30 in the embodiment respectively drive the crushing shafts 320 to rotate in opposite directions. In this way, when the larger-sized straw that fails to be effectively crushed in the crushing bin 210 enters the feed inlets of the two crushing bins 310, it can be subjected to the bi-directional shearing force and impact force of the two crushing shafts 320 to make up for the part that fails to be effectively crushed in the crushing bin 210, ensuring a more uniform crushing effect of the straw before entering the crushing bin 310. The sieve holes are used to introduce the qualified straw particles after screening into the discharge bin 50. The straw particles that fail to pass through the sieve holes continue to be cyclically crushed in the crushing area until the required particle size is reached. The aperture of the sieve holes can be adjusted according to needs to control the final particle size.

[0044] The crushing drive member 330 includes a motor 331 installed on the machine body 10, a transmission shaft 332 rotatably installed on the machine body 10 and connected to the output end of the motor 331, a driving gear 333 provided on the transmission shaft 332, and a driven gear 334 provided on the crushing shaft 320 and meshing with the driving gear 333. In the embodiment, the number of the motor 331 and the transmission shaft 332 is one each, and the number of the driving gear 333 and the driven gear 334 is two each, and they are arranged in one-to-one correspondence with the crushing shafts 320. The crushing shaft 220 and the two crushing shafts 320 are both driven by the motor 331 to rotate. Specifically, one end of the transmission belt 240 for driving the crushing shaft 220 to rotate, which is far from the crushing shaft 220, is installed on the transmission shaft 332 through a transmission wheel to rotate under the drive of the motor 331. Each crushing shaft 320 rotates through gear meshing under the drive of the motor 331.

[0045] As Figures 2 to 6 shown, each crushing unit 340 includes a moving sleeve 410 sleeved on the crushing shaft 320 and axially movable along the crushing shaft 320, a compression spring 420 connected to the moving sleeve 410, a telescopic sleeve 480 connected to the moving sleeve 410 for accommodating the compression spring 420, a cutter 440 rotatably installed on the moving sleeve 410 through an adjusting shaft 430 for cutting straw, a torsion spring 470 connected between the adjusting shaft 430 and the moving sleeve 410, an adjusting gear 450 provided on the adjusting shaft 430, and a rack 460 fixed on the crushing shaft 320 for driving the adjusting gear 450 to rotate.

[0046] The number of the cutters 440 of each crushing unit 340 is two, and the two cutters 440 are symmetrically distributed with respect to the crushing shaft 320. The symmetrically distributed cutters 440 help to maintain the rotational balance of the crushing shaft 320, reduce vibration, and extend the service life of the equipment. At the same time, it can increase the number of cuts on the straw per unit time, ensure that the straw is evenly cut and crushed during the crushing process, improve the crushing efficiency and quality, and better adapt to straw with a high fiber content and certain flexibility. Multiple protrusions 441 are symmetrically arranged on the two cutting surfaces of each cutter 440, and the top of each protrusion 441 is in the shape of a cone with a smaller top and a larger bottom. The protrusions 441 can increase the contact area between the cutter 440 and the straw, form multiple shear points during rotation, significantly improve the shear efficiency, and can also push and disperse the straw after the cutter 440 cuts the straw to change the position of the straw, so that when the cutter 440 cuts the same position next time, it can effectively cut more materials.

[0047] The compression spring 420 is used to apply an elastic force to the moving sleeve 410 so that the moving sleeve 410 moves in the direction close to the piston 350. An accommodation chamber for accommodating the compression spring 420 is formed between the telescopic sleeve 480 and the crushing shaft 320 to prevent particles during the crushing process from entering and affecting the performance of the compression spring 420.

[0048] Sliding grooves 370 corresponding to each crushing unit 340 are formed on the crushing shaft 320. The sliding grooves 370 extend along the axial direction of the crushing shaft 320. The adjusting shaft 430 is movably assembled in the sliding grooves 370. When the crushing shaft 320 rotates, the crushing shaft 320 can drive the two cutters 440 to rotate synchronously around the crushing shaft 320 through the adjusting shaft 430, so that the cutters 440 cut and crush the straw. The sliding groove 370 includes a first groove body 371, a second groove body 373 located on the side of the first groove body 371 away from the piston 350, and a variable-diameter groove body 372 communicating between the first groove body 371 and the second groove body 373. The width of the first groove body 371 is adapted to the diameter of the adjusting shaft 430. When the adjusting shaft 430 is located in the first groove body 371, the torsion spring 470 can apply an elastic force to the adjusting shaft 430, so that the adjusting shaft 430 drives the cutter 440 to rotate until the cutting surface is perpendicular to the pushing surface of the piston 350. A key groove 431 is formed on the adjusting shaft 430, and the width of the second groove body 373 is adapted to the key groove 431 of the adjusting shaft 430. When the adjusting shaft 430 is located in the second groove body 373, due to the limitation of the second groove body 373 on the key groove 431 of the adjusting shaft 430, the adjusting shaft 430 can drive the cutter 440 to maintain the state where the cutting surface faces the piston 350. The variable-diameter groove body 372 gradually shrinks from the first groove body 371 to the second groove body 373. As the transition part between the two groove bodies, it is used to allow the adjusting shaft 430 to smoothly move and rotate between the two groove bodies with different widths, so as to realize the adjustment of the position and angle of the cutter 440.

[0049] When each crushing mechanism 30 is working, in addition to driving the crushing shaft 320 to rotate by the crushing driving member 330 to drive the crushing unit 340 to perform a cutting action on the straw, the piston 350 can also be driven by the linear driving member 360 to reciprocate, so that the piston 350 compacts the straw in the crushing bin 310 or retracts.

[0050] Specifically, when the piston 350 compacts the straw in the crushing bin 310, it can push the moving sleeve 410 to move, so that the moving sleeve 410 drives the adjusting shaft 430 to move from the first groove body 371 to the direction of the second groove body 373. During the moving process, the adjusting gear 450 on the adjusting shaft 430 meshes with the rack 460, so that the cutting tool 440 rotates with the adjusting shaft 430 until the cutting surface faces the piston 350. During the compaction process, the fiber structure of the straw is compressed and damaged, the density of the compacted straw increases, the voids during crushing are reduced, and it is easier to be cut and crushed during the rotation of the cutting tool 440, improving the crushing efficiency, making it easier to achieve a uniform crushing effect, reducing the difference in crushing particle size, and being suitable for processing straw with a high fiber content and a certain flexibility.

[0051] When the piston 350 retracts, the elastic force of the compression spring 420 drives the moving sleeve 410 to reset, so that the moving sleeve 410 drives the adjusting shaft 430 to move from the second groove body 373 to the direction of the first groove body 371. The cutting surface of the cutting tool 440 first pushes the straw in the crushing bin 310 to disperse the straw in the crushing bin 310, which is beneficial for the qualified straw particles to smoothly discharge through the sieve holes. At the same time, the position of the straw is changed, making it easier to be cut and crushed after the straw is compacted again, improving the uniformity of crushing. Subsequently, the adjusting gear 450 on the adjusting shaft 430 meshes with the rack 460, so that the cutting tool 440 rotates with the adjusting shaft 430 until the cutting surface is perpendicular to the pushing surface of the piston 350.

[0052] It should be noted that by adjusting the frequency and intensity of compaction and dispersion, and cooperating with the cutting action of the cutting tool 440, the crushing equipment can adapt to different types and states of straw, improving the versatility of the equipment.

[0053] The linear driving member 360 in the embodiment is a hydraulic cylinder. In other embodiments, the linear driving member 360 can also be an air cylinder or an electric push rod.

[0054] An embodiment of the biomass energy particle crushing method of the present invention includes the following steps:

[0055] The first step is feeding. The straw to be crushed is put into the crushing bin 210 through the feeding port 211.

[0056] The second step is preliminary crushing. Multiple crushing knives of the crushing mechanism 20 perform preliminary crushing on the straw in the crushing bin 210 to pre-cut the large pieces of straw into smaller segments.

[0057] Step 3: Fine crushing. The straw initially crushed by the crushing mechanism 20 drops through the discharge port of the crushing bin 210 and then enters the crushing bin 310 through the feed port of the crushing bin 310. The crushing shaft 320 drives a plurality of crushing units 340 to rotate around the crushing shaft 320, and the cutting tool 440 cuts and crushes the straw. Meanwhile, the linear drive 360 drives the piston 350 to reciprocate to compact or retract the straw in the crushing bin 310. When the piston 350 compacts the straw in the crushing bin 310, it pushes the moving sleeve 410 to move. The moving sleeve 410 drives the adjusting shaft 430 to move until the adjusting gear 450 meshes with the rack 460. The adjusting gear 450 drives the cutting tool 440 to rotate with the adjusting shaft 430 until the cutting surface faces the piston 350. When the piston 350 retracts, the compression spring 420 drives the moving sleeve 410 to reset, and the cutting surface of the cutting tool 440 pushes the straw in the crushing bin 310 to be scattered.

[0058] Step 4: Discharging. The qualified straw particles enter the discharge bin 50 through the sieve holes, and the straw particles that fail to pass through the sieve holes continue to circulate and be crushed in the crushing area until the required particle size is reached.

[0059] In this way, through the synergistic effect of compaction, scattering, and cutting, the biomass energy particle crushing equipment and its crushing method of the present invention can flexibly control the distribution density and uniformity of the straw during the straw crushing process, making the straw easier to be cut and crushed, improving the crushing efficiency, more easily achieving a uniform crushing effect, reducing the difference in crushing particle size, and being applicable to processing straw with a high fiber content and a certain flexibility. In addition, by adjusting the frequency and intensity of compaction and scattering, and coordinating with the cutting action of the cutting tool 440, the crushing equipment can adapt to different types and states of straw, improving the versatility of the equipment.

[0060] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 to the present invention.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0062] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A biomass energy particle crushing device, comprising a machine body and a crushing mechanism arranged on the machine body, characterized in that, The crushing mechanism includes a crushing bin, a crushing shaft extending along the length direction of the crushing bin and rotatably installed in the crushing bin, a crushing driving member for driving the crushing shaft to rotate, a plurality of crushing units arranged axially on the crushing shaft, a piston movably assembled in the crushing bin along the length direction of the crushing bin, and a linear driving member for driving the piston to reciprocate so as to compact the straw in the crushing bin or retreat; Each of the crushing units includes a moving sleeve sleeved on the crushing shaft and axially movable along the crushing shaft, a compression spring connected to the moving sleeve, a cutter for cutting straw rotatably installed on the moving sleeve through an adjusting shaft, an adjusting gear arranged on the adjusting shaft, and a rack fixed on the crushing shaft for driving the adjusting gear to rotate; When the piston compacts the straw in the crushing bin, it can push the moving sleeve to move, so that the adjusting gear meshes with the rack, thereby driving the cutter to rotate with the adjusting shaft until the cutter surface faces the piston. When the piston retreats, the compression spring can drive the moving sleeve to reset, so that the cutter surface pushes the straw in the crushing bin to be scattered; Chute grooves corresponding to each crushing unit are formed on the crushing shaft, the chute grooves extend along the axial direction of the crushing shaft, the adjusting shaft is movably assembled in the chute grooves, the chute grooves include a first groove body and a second groove body located on the side of the first groove body away from the piston, the width of the first groove body is adapted to the diameter of the adjusting shaft, a key groove is formed on the adjusting shaft, and the width of the second groove body is adapted to the position of the key groove on the adjusting shaft; The chute groove further includes a variable-diameter groove body communicating between the first groove body and the second groove body, and the variable-diameter groove body gradually decreases from the first groove body to the second groove body.

2. The biomass energy particle crushing equipment according to claim 1, characterized in that, Each of the crushing units further includes a torsion spring connected between the adjusting shaft and the moving sleeve.

3. A biomass energy pellet crushing device according to claim 1, characterized in that, A plurality of protrusions are symmetrically arranged on the two cutter surfaces of each cutter, and the top of each protrusion is in a conical shape with a smaller upper part and a larger lower part.

4. A biomass energy particle crushing device according to claim 1, characterized in that, Each of the crushing units further includes a telescopic sleeve connected to the moving sleeve, and an accommodating chamber for accommodating the compression spring is formed between the telescopic sleeve and the crushing shaft.

5. A biomass energy particle crushing device according to claim 1, characterized in that, The number of cutters in each of the crushing units is two, and the two cutters are symmetrically distributed with respect to the crushing axis.

6. A biomass energy particle crushing device according to claim 1, characterized in that, The biomass energy particle crushing device further includes a crushing mechanism arranged on the machine body and above the crushing mechanism. The crushing mechanism includes a crushing bin, a crushing shaft extending along the length direction of the crushing bin and rotatably installed in the crushing bin, and a plurality of crushing units arranged axially on the crushing shaft. The lower end of the crushing bin has a discharge port, the upper end of the crushing bin has a feed port, and the feed port is communicated with the discharge port.

7. A biomass energy particle crushing device according to claim 6, characterized in that, The number of the crushing mechanisms is two, the two crushing mechanisms are arranged side by side, the discharge ports of the two crushing mechanisms are communicated with each other, and the crushing driving members of the two crushing mechanisms respectively drive the crushing shafts to rotate in opposite directions.

8. A method for crushing biomass energy particles, characterized in that, Using a biomass energy particle crushing device according to claim 1, including the following steps: The first step is feeding, putting the straw to be crushed into the crushing bin; The second step is crushing. Start the crushing driving member, and the crushing driving member drives the crushing shaft to drive a plurality of crushing units to rotate around the crushing shaft, and the cutters cut and crush the straw; Step 3: Dispersing. Start the linear driving component. The linear driving component drives the piston to reciprocate, so that the piston compacts the straw in the crushing bin or retracts. When the piston compacts the straw in the crushing bin, it pushes the moving sleeve to move. The moving sleeve drives the adjusting shaft to move until the adjusting gear meshes with the rack. The adjusting gear drives the cutter to rotate with the adjusting shaft until the cutter face faces the piston. When the piston retracts, the compression spring drives the moving sleeve to reset, and the cutter face of the cutter pushes the straw in the crushing bin to be dispersed; Step 4: Discharging. Discharge the crushed straw from the crushing bin.

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