Biomass energy particle crushing equipment and crushing method thereof

Abstract

The invention relates to the technical field of crushing devices, and particularly discloses biomass energy particle crushing equipment and a crushing method thereof.The biomass energy particle crushing equipment comprises a machine body and a crushing mechanism arranged on the machine body; the crushing mechanism comprises a crushing bin, a crushing shaft rotationally mounted in the crushing bin, a crushing driving part for driving the crushing shaft to rotate, a plurality of crushing units arranged on the crushing shaft, a piston movably assembled in the crushing bin, and a linear driving part for driving the piston to do reciprocating motion so as to enable the piston to compact straw in the crushing bin or return; each crushing unit comprises a moving sleeve which is movably arranged on the crushing shaft in a sleeving manner in the axial direction of the crushing shaft, a compression spring connected with the moving sleeve, a cutter rotationally mounted on the moving sleeve through an adjusting shaft, an adjusting gear arranged on the adjusting shaft, and a rack which is fixed on the crushing shaft and is used for driving the adjusting gear to rotate. According to the biomass energy particle crushing equipment and the crushing method thereof, through the synergistic effect of compaction, scattering and cutting, the crushing efficiency and the crushing quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of crushing devices, and in particular 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 waste (such as straw, rice husk, etc.), drying, crushing, batching, hot compression, molding, and granulation. Among them, the crushing link is an important step in the production of biomass fuel. Its purpose is to process the biomass raw materials into a particle size that meets the requirements of the subsequent molding process, thereby improving the combustion efficiency and molding quality of the fuel.

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

[0004] However, during operation of the crop straw crushing and screening device in the prior art, due to the high fiber content and certain flexibility of the straw, the cutter may not be able to fully cut or crush the straw, causing the straw to be dragged, stretched or curled instead of being completely crushed, affecting 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 of poor adaptability to straw raw materials, insufficient crushing and uneven crushing particle size existing in the crop straw crushing and screening device in the related art.

[0006] The present invention provides a biomass energy particle crushing device adopts the following technical solution: A biomass energy particle crushing device comprises a machine body, a crushing mechanism arranged on the machine body, the crushing mechanism comprises 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 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 assembled in the crushing bin and moving along the length direction of the crushing bin, and a linear driving member driving the piston to reciprocate so that the piston compacts the straw in the crushing bin or retreats; Each of the crushing units comprises a moving sleeve mounted on the crushing shaft along the axial direction of the crushing shaft, a compression spring connected to the moving sleeve, a cutter for cutting straws mounted on the moving sleeve through an adjusting shaft, an adjusting gear mounted 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 movable sleeve to move, so that the adjusting gear engages with the rack, thereby driving the cutter to rotate along the adjusting shaft until the blade faces the piston. When the piston retreats, the compression spring can drive the movable sleeve to reset, so that the blade of the cutter pushes the straw in the crushing bin to break up.

[0007] By adopting the above technical scheme, the distribution density and uniformity of the straw can be flexibly controlled during the straw crushing process through the synergistic effects of compaction, breakup and cutting, making the straw easier to cut and crush, improving the crushing efficiency, making it easier to achieve a uniform crushing effect, and reducing the difference in crushing particle size. It is suitable for processing straw with high fiber content and a certain degree of flexibility. In addition, by adjusting the frequency and strength of compaction and breakup, and coordinating the cutting action of the tool, the crushing equipment can adapt to straw of different types and states, thereby improving the versatility of the equipment.

[0008] Furthermore, the crushing shaft is provided with a slide groove corresponding to each crushing unit, the slide groove extends axially along the crushing shaft, the adjusting shaft is movably assembled in the slide groove, the slide groove includes 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, the adjusting shaft is provided with a key groove, and the width of the second groove body is adapted to the key groove of the adjusting shaft.

[0009] Furthermore, the slide groove also includes a diameter-changing groove body connected between the first groove body and the second groove body, and the diameter-changing groove body gradually decreases from the first groove body to the second groove body.

[0010] With the above technical solution, the variable diameter groove body serves as a transition portion between the two groove bodies, and is used to allow the adjustment shaft to move and rotate smoothly between the two groove bodies of different widths, thereby achieving adjustment of the position and angle of the tool.

[0011] Furthermore, each of the pulverizing units also includes a torsion spring connected between the adjusting shaft and the movable sleeve.

[0012] Furthermore, a plurality of protrusions are symmetrically arranged on the two blade surfaces of each of the knives, and the top of each of the protrusions is in a cone shape that is smaller at the top and larger at the bottom.

[0013] By adopting the above technical solution, the protrusion can increase the contact area between the tool and the straw, forming multiple shearing points during the rotation process, significantly improving the shearing efficiency, and can also push and break up the straw after the tool cuts the straw to change the position of the straw, so that the tool can effectively cut more materials when cutting the same position next time.

[0014] Furthermore, each of the pulverizing units further comprises a telescopic sleeve connected to the movable sleeve, and a housing chamber for housing a compression spring is formed between the telescopic sleeve and the pulverizing shaft.

[0015] By adopting the above technical solution, the telescopic sleeve is used to prevent particles in the crushing process from entering the containing chamber and affecting the performance of the compression spring.

[0016] Furthermore, each of the crushing units has two cutters, and the two cutters are symmetrically distributed relative to the crushing axis.

[0017] By adopting the above technical scheme, the symmetrically distributed cutters help to maintain the rotational balance of the crushing shaft, reduce vibration, and extend the service life of the equipment. At the same time, it can increase the number of straw cuttings per unit time, ensure that the straw is evenly cut and crushed during the crushing process, improve the crushing efficiency and crushing quality, and better adapt to straw with high fiber content and certain flexibility.

[0018] Furthermore, the biomass energy particle crushing equipment also includes a crushing mechanism arranged on the machine body and located 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 on the crushing shaft along the axial direction of 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 connected to the discharge port.

[0019] By adopting the above technical solution, the multiple crushing knives of the crushing mechanism can perform preliminary crushing on the straw, and pre-cut large pieces of straw into smaller fragments, so that they are easier to be further crushed when entering the crushing mechanism, and the crushing mechanism can complete the fine crushing work more efficiently.

[0020] Furthermore, there are two pulverizing mechanisms, which are arranged side by side, and the discharge ports of the two pulverizing mechanisms are interconnected, and the pulverizing driving members of the two pulverizing mechanisms respectively drive the pulverizing shafts to rotate in opposite directions.

[0021] By adopting the above technical scheme, when the larger straw that has not been effectively crushed in the crushing bin enters the feed port of the two crushing bins, it can be subjected to the bidirectional shear force and impact force of the two crushing shafts to compensate for the part that has not been effectively crushed in the crushing bin, ensuring a more uniform crushing effect for the straw before entering the crushing bin.

[0022] The present invention also provides a biomass energy particle crushing method, comprising the following steps: The first step is feeding, putting the straw to be crushed into the crushing bin; The second step is crushing, starting the crushing drive, the crushing drive drives the crushing shaft to drive multiple crushing units to rotate around the crushing shaft, and the cutter cuts and crushes the straw; The third step is to break up the straw. The linear drive member is started. The linear drive member drives the piston to move back and forth so that the piston compacts the straw in the crushing bin or retreats. When the piston compacts the straw in the crushing bin, it pushes the movable sleeve to move. The movable sleeve drives the adjusting shaft to move until the adjusting gear is meshed with the rack. The adjusting gear drives the cutter to rotate with the adjusting shaft until the blade faces the piston. When the piston retreats, the compression spring drives the movable sleeve to reset, and the blade face of the cutter pushes the straw in the crushing bin to break up the straw. The fourth step is discharging the crushed straw from the crushing bin.

[0023] The beneficial effects of a biomass energy particle crushing device and a crushing method provided by the present invention are: through the synergistic effect of compaction, dispersion and cutting, the distribution density and distribution uniformity of the straw can be flexibly controlled during the straw crushing process, so that the straw is easier to cut and crush, the crushing efficiency is improved, it is easier to achieve a uniform crushing effect, and the difference in crushing particle size is reduced. It is suitable for processing straw with high fiber content and certain flexibility. In addition, by adjusting the frequency and strength of compaction and dispersion, and coordinating the cutting action of the tool, the crushing equipment can adapt to straws of different types and states, thereby improving the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the biomass energy particle crushing equipment of the present invention.

[0025] Figure 2 It is a schematic structural diagram of the biomass energy particle crushing equipment of the present invention from another perspective.

[0026] Figure 3 It is a structural schematic diagram of the crushing mechanism and the pulverizing mechanism of the biomass energy particle pulverizing equipment of the present invention.

[0027] Figure 4 It is a schematic structural diagram of the crushing mechanism and the pulverizing mechanism of the biomass energy particle pulverizing device of the present invention from another perspective.

[0028] Figure 5 It is a structural schematic diagram of the pulverizing mechanism of the biomass energy particle pulverizing device of the present invention.

[0029] Figure 6 It is a schematic structural diagram of a pulverizing unit of the biomass energy particle pulverizing device of the present invention.

[0030] Reference numerals: 10. Machine body; 20. Crushing mechanism; 210. Crushing bin; 211. Feeding port; 220. Crushing shaft; 230. Crushing unit; 240. Transmission belt; 30. Crushing mechanism; 310. Crushing bin; 320. Crushing shaft; 330. Crushing drive member; 331. Motor; 332. Transmission shaft; 333. Driving gear; 334. Driven gear; 340. Crushing unit; 350. Piston; 360. Linear drive member; 370. Slide; 371. First trough body; 372. Variable diameter trough body; 373. Second trough body; 410. Moving sleeve; 420. Compression spring; 430. Adjusting shaft; 431. Keyway; 440. Cutting tool; 441. Protrusion; 450. Adjusting gear; 460. Rack; 470. Torsion spring; 480. Telescopic sleeve; 50. Discharging bin. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] like Figure 1 As shown, an embodiment of the biomass energy particle pulverizing device of the present invention is used for pulverizing straw, and includes a body 10, a crushing mechanism 20, a crushing mechanism 30 and a discharge bin 50, wherein the crushing mechanism 20, the crushing mechanism 30 and the discharge bin 50 are sequentially arranged on the body 10 from top to bottom. Among them, the crushing mechanism 20 is used for preliminary crushing of the straw, the crushing mechanism 30 is used for fine crushing of the straw after preliminary crushing, and the discharge bin 50 is used for collecting and discharging the crushed straw particles.

[0033] like Figures 1 to 3 As shown, the crushing mechanism 20 includes a crushing chamber 210 fixed on the body 10, a crushing shaft 220 extending along the length direction of the crushing chamber 210 and rotatably installed in the crushing chamber 210, a transmission belt 240 connected to the crushing shaft 220 to drive the crushing shaft 220 to rotate, and a plurality of crushing units 230 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 on the crushing shaft 220 along the circumferential direction of the crushing shaft 220 for cutting straw. The upper part of the crushing chamber 210 is provided with a feeding port 211 for feeding the straw to be crushed into the crushing chamber 210. The lower end of the crushing chamber 210 is provided with a discharge port for discharging the preliminarily crushed straw from the crushing chamber 210. The plurality of crushing knives of the crushing mechanism 20 can preliminarily crush the straw and pre-cut the large pieces of straw into smaller pieces, so that they are easier to be further crushed when entering the crushing mechanism 30, and the crushing mechanism 30 can complete the fine crushing work more efficiently.

[0034] like Figures 1 to 5 As shown, there are two crushing mechanisms 30, and the two crushing mechanisms 30 are arranged side by side. Each crushing mechanism 30 includes a crushing bin 310, a crushing shaft 320 extending along the length direction of the crushing bin 310 and rotatably installed in the crushing bin 310, a crushing driving member 330 driving the crushing shaft 320 to rotate, a plurality of crushing units 340 arranged on the crushing shaft 320 along the axial direction of the crushing shaft 320, a piston 350 assembled in the crushing bin 310 and moving along the length direction of the crushing bin 310, and a linear driving member 360 driving the piston 350 to reciprocate so that the piston 350 compacts the straw in the crushing bin 310 or retreats.

[0035] Each crushing bin 310 is in the shape of a horizontally extending cylinder, and has a feed port at the upper end of the crushing bin 310, and a plurality of sieve holes connected to 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 connected to each other and to the discharge port of the upper crushing bin 210, and the straw that has been preliminarily crushed by the crushing mechanism 20 falls 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, so as 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, so that when the larger straw that has not been effectively crushed in the crushing bin 210 enters the feed port of the two crushing bins 310, it can be subjected to the bidirectional shear force and impact force of the two crushing shafts 320 to make up for the part that has not been effectively crushed in the crushing bin 210, ensuring that the straw achieves a more uniform crushing effect before entering the crushing bin 310. The sieve holes are used to guide the qualified straw particles after screening into the discharge bin 50, and the straw particles that have not passed through the sieve holes continue to be circulated and crushed in the crushing area until the desired particle size is reached. The aperture of the sieve holes can be adjusted as needed to control the final particle size.

[0036] The crushing drive member 330 includes a motor 331 mounted on the machine body 10, a transmission shaft 332 rotatably mounted on the machine body 10 and connected to the output end of the motor 331, a driving gear 333 arranged on the transmission shaft 332, and a driven gear 334 arranged 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, and the number of the driving gear 333 and the driven gear 334 are two, and they are arranged one by one corresponding to the crushing shaft 320. The crushing shaft 220 and the two crushing shafts 320 are driven to rotate by the motor 331. Specifically, the end of the transmission belt 240 used to drive the crushing shaft 220 to rotate away from the crushing shaft 220 is installed on the transmission shaft 332 through a transmission wheel, so as to rotate under the drive of the motor 331. Each crushing shaft 320 is meshed by gears to rotate under the drive of the motor 331.

[0037] like Figures 2 to 6 As shown, each crushing unit 340 includes a movable sleeve 410 arranged on the crushing shaft 320 along the axial direction of the crushing shaft 320, a compression spring 420 connected to the movable sleeve 410, a telescopic sleeve 480 connected to the movable sleeve 410 for accommodating the compression spring 420, a tool 440 for cutting straw rotatably installed on the movable sleeve 410 through an adjusting shaft 430, a torsion spring 470 connected between the adjusting shaft 430 and the movable sleeve 410, an adjusting gear 450 arranged on the adjusting shaft 430, and a rack 460 fixed on the crushing shaft 320 for driving the adjusting gear 450 to rotate.

[0038] Each crushing unit 340 has two cutters 440, and the two cutters 440 are symmetrically distributed relative to the crushing shaft 320. The symmetrically distributed cutters 440 help to maintain the rotation balance of the crushing shaft 320, reduce vibration, and extend the service life of the equipment. At the same time, they can increase the number of times the straw is cut per unit time, ensure that the straw is evenly cut and crushed during the crushing process, improve the crushing efficiency and crushing quality, and better adapt to straw with high fiber content and certain flexibility. The two blade surfaces of each cutter 440 are symmetrically provided with multiple protrusions 441, and the top of each protrusion 441 is a cone with a small top and a large bottom. The protrusion 441 can increase the contact area between the cutter 440 and the straw, form multiple shearing points during the rotation process, significantly improve the shearing efficiency, and can also push the straw to break up after the cutter 440 cuts the straw to change the position of the straw, so that the cutter 440 can effectively cut more materials when cutting the same position next time.

[0039] The compression spring 420 is used to apply elastic force to the movable sleeve 410 so that the movable sleeve 410 moves toward the piston 350. A receiving chamber for receiving the compression spring 420 is formed between the telescopic sleeve 480 and the crushing shaft 320 to prevent particles from entering during the crushing process and affecting the performance of the compression spring 420.

[0040] The crushing shaft 320 is provided with a chute 370 corresponding to each crushing unit 340, and the chute 370 extends axially along the crushing shaft 320. The adjusting shaft 430 is movably assembled in the chute 370, so that 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 chute 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 connected 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 elastic force to the adjusting shaft 430, so that the adjusting shaft 430 drives the cutter 440 to rotate until the knife surface is perpendicular to the push surface of the piston 350. A key slot 431 is provided on the adjusting shaft 430, and the width of the second slot body 373 matches the key slot 431 of the adjusting shaft 430. When the adjusting shaft 430 is located in the second slot body 373, the key slot 431 of the adjusting shaft 430 is limited by the second slot body 373, so the adjusting shaft 430 can drive the tool 440 to remain in a state where the tool face faces the piston 350. The variable diameter slot body 372 gradually decreases from the first slot body 371 to the second slot body 373, and serves as a transition portion between the two slot bodies, so as to allow the adjusting shaft 430 to smoothly move and rotate between two slot bodies of different widths, thereby adjusting the position and angle of the tool 440.

[0041] When each pulverizing mechanism 30 is working, in addition to the pulverizing drive member 330 driving the pulverizing shaft 320 to rotate and drive the pulverizing unit 340 to cut the straw, the linear drive member 360 can also drive the piston 350 to move back and forth, so that the piston 350 compacts the straw in the pulverizing bin 310 or retreats.

[0042] Specifically, when the piston 350 compacts the straw in the crushing bin 310, it can push the movable sleeve 410 to move, so that the movable sleeve 410 drives the adjusting shaft 430 to move from the first groove body 371 to the second groove body 373. During the movement, the adjusting gear 450 on the adjusting shaft 430 engages with the rack 460, so that the tool 440 rotates with the adjusting shaft 430 until the blade faces the piston 350. During the compaction process, the fiber structure of the straw is compressed and destroyed, and the density of the compacted straw is increased, which reduces the gaps during crushing. It is easier to cut and crush during the rotation of the tool 440, which improves the crushing efficiency, makes it easier to achieve a uniform crushing effect, and reduces the difference in crushing particle size. It is suitable for processing straw with high fiber content and a certain flexibility.

[0043] When the piston 350 retreats, the elastic force of the compression spring 420 drives the movable sleeve 410 to reset, so that the movable sleeve 410 drives the adjustment shaft 430 to move from the second slot body 373 to the first slot body 371. The blade of the cutter 440 first pushes the straw in the crushing bin 310 to break up the straw in the crushing bin 310, which is conducive to the smooth discharge of qualified straw particles through the sieve holes. At the same time, the position of the straw is changed, so that the straw is easier to cut and crush after being compacted again, thereby improving the uniformity of the crushing. Then, the adjustment gear 450 on the adjustment shaft 430 meshes with the rack 460, so that the cutter 440 rotates with the adjustment shaft 430 until the blade is perpendicular to the push surface of the piston 350.

[0044] It should be noted that by adjusting the frequency and strength of compaction and dispersion and coordinating the cutting action of the cutter 440, the crushing equipment can adapt to straws of different types and states, thereby improving the versatility of the equipment.

[0045] The linear drive member 360 in the embodiment is a hydraulic cylinder. In other embodiments, the linear drive member 360 may also be a pneumatic cylinder or an electric push rod.

[0046] The embodiment of the biomass energy particle pulverization method of the present invention comprises the following steps: The first step is feeding, that is, feeding the straw to be crushed into the crushing bin 210 through the feeding port 211 .

[0047] The second step is preliminary crushing. The multiple crushing knives of the crushing mechanism 20 perform preliminary crushing on the straw in the crushing bin 210, and pre-cut the large pieces of straw into smaller pieces.

[0048] The third step is fine crushing. The straw that has been initially crushed by the crushing mechanism 20 falls 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 the multiple crushing units 340 to rotate around the crushing shaft 320, and the cutter 440 cuts and crushes the straw. At the same time, the linear drive member 360 drives the piston 350 to move back and forth so that the piston 350 compacts the straw in the crushing bin 310 or retreats. When the piston 350 compacts the straw in the crushing bin 310, it pushes the movable sleeve 410 to move. The movable sleeve 410 drives the adjusting shaft 430 to move until the adjusting gear 450 is meshed with the rack 460. The adjusting gear 450 drives the cutter 440 to rotate with the adjusting shaft 430 until the blade faces the piston 350. When the piston 350 retreats, the compression spring 420 drives the movable sleeve 410 to reset, and the blade surface of the cutter 440 pushes the straw in the crushing bin 310 to break up.

[0049] The fourth step is discharging. Qualified straw particles pass through the sieve holes and enter the discharging bin 50. Straw particles that fail to pass through the sieve holes continue to be circulated and crushed in the crushing area until the required particle size is reached.

[0050] In this way, the biomass energy particle crushing equipment and crushing method of the present invention can flexibly control the distribution density and distribution uniformity of the straw during the straw crushing process through the synergistic effect of compaction, dispersion and cutting, so that the straw is easier to cut and crush, the crushing efficiency is improved, it is easier to achieve a uniform crushing effect, and the difference in crushing particle size is reduced. It is suitable for processing straw with high fiber content and certain flexibility. In addition, by adjusting the frequency and strength of compaction and dispersion, and coordinating the cutting action of the tool 440, the crushing equipment can adapt to straws of different types and states, thereby improving the versatility of the equipment.

[0051] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary 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 pulverizing mechanism comprises a pulverizing bin, a pulverizing shaft extending along the length direction of the pulverizing bin and rotatably mounted in the pulverizing bin, a pulverizing driving member driving the pulverizing shaft to rotate, a plurality of pulverizing units arranged on the pulverizing shaft along the axial direction of the pulverizing shaft, a piston mounted in the pulverizing bin and moving along the length direction of the pulverizing bin, and a linear driving member driving the piston to reciprocate so that the piston compacts the straw in the pulverizing bin or retreats; Each of the crushing units comprises a moving sleeve mounted on the crushing shaft along the axial direction of the crushing shaft, a compression spring connected to the moving sleeve, a cutter for cutting straws mounted on the moving sleeve through an adjusting shaft, an adjusting gear mounted 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 movable sleeve to move, so that the adjusting gear engages with the rack, thereby driving the cutter to rotate along the adjusting shaft until the blade faces the piston. When the piston retreats, the compression spring can drive the movable sleeve to reset, so that the blade of the cutter pushes the straw in the crushing bin to break up.

2. The biomass energy particle crushing equipment according to claim 1, characterized in that: The crushing shaft is provided with a slide groove corresponding to each crushing unit, and the slide groove extends axially along the crushing shaft. The adjusting shaft is movably assembled in the slide groove. The slide groove includes 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. The adjusting shaft is provided with a key groove, and the width of the second groove body is adapted to the key groove of the adjusting shaft.

3. The biomass energy particle crushing equipment according to claim 2 is characterized in that: The slide groove also includes a diameter-changing groove body connected between the first groove body and the second groove body, and the diameter-changing groove body gradually decreases from the first groove body to the second groove body.

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

5. The biomass energy particle crushing equipment according to claim 1, characterized in that: The two blade surfaces of each tool are symmetrically provided with a plurality of protrusions, and the top of each protrusion is in a cone shape with a small top and a large bottom.

6. The biomass energy particle crushing equipment according to claim 1, characterized in that: Each of the pulverizing units further comprises a telescopic sleeve connected to the movable sleeve, and a receiving chamber for receiving a compression spring is formed between the telescopic sleeve and the pulverizing shaft.

7. The biomass energy particle crushing equipment according to claim 1, characterized in that: Each of the crushing units has two cutters, and the two cutters are symmetrically distributed relative to the crushing axis.

8. The biomass energy particle crushing equipment according to claim 1, characterized in that: The biomass energy particle crushing equipment also includes a crushing mechanism arranged on the machine body and located 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 on the crushing shaft along the axial direction of 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 connected to the discharge port.

9. The biomass energy particle crushing equipment according to claim 8, characterized in that: There are two pulverizing mechanisms, which are arranged side by side, and the discharge ports of the two pulverizing mechanisms are interconnected. The pulverizing driving members of the two pulverizing mechanisms respectively drive the pulverizing shafts to rotate in opposite directions.

10. A method for crushing biomass energy particles, characterized in that: The biomass energy particle crushing device according to claim 1 comprises the following steps: The first step is feeding, putting the straw to be crushed into the crushing bin; The second step is crushing, starting the crushing drive, the crushing drive drives the crushing shaft to drive multiple crushing units to rotate around the crushing shaft, and the cutter cuts and crushes the straw; The third step is to break up the straw. The linear drive member is started. The linear drive member drives the piston to move back and forth so that the piston compacts the straw in the crushing bin or retreats. When the piston compacts the straw in the crushing bin, it pushes the movable sleeve to move. The movable sleeve drives the adjusting shaft to move until the adjusting gear is meshed with the rack. The adjusting gear drives the cutter to rotate with the adjusting shaft until the blade faces the piston. When the piston retreats, the compression spring drives the movable sleeve to reset, and the blade face of the cutter pushes the straw in the crushing bin to break up the straw. The fourth step is discharging the crushed straw from the crushing bin.

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