Automatic biomass crushing device

Abstract

The invention relates to the technical field of biomass fuel processing, in particular to an automatic biomass smashing device which comprises a base, a smashing mechanism, a vibration unit and an amplitude adjusting part. According to the vibrating screen, the vibrating unit enables the screen to synchronously move left and right in a small amplitude mode in the crushing operation process and generate vibration, and crushed materials attached to the screen are assisted by vibration to fall off and penetrate through the screen to complete discharging; the rubber conical heads can be intermittently clamped into the through holes in the corresponding positions of the screen to dredge and clean the screen, meanwhile, the cleaning brush and the cleaning scraper are used for brushing and scraping the screen in the whole-circle rotation process, in conclusion, the blockage problem is avoided in a multiple anti-adhesion mode, and the cleaning efficiency is improved. And the crushing efficiency, the uniformity of crushed materials and the discharging quality are guaranteed.

Description

Technical Field

[0001] This invention relates to the field of biomass fuel processing technology, specifically to an automatic biomass crushing device. Background Technology

[0002] Biomass fuel refers to the use of biomass materials directly or after processing as fuel. Among them, garden waste is the most common biomass raw material. Garden waste mainly includes various plant residues generated during the pruning or maintenance of plants in urban green spaces, parks, green belts, etc., mainly the trunks and leaves of various trees. In order to facilitate subsequent treatment and reuse, this type of garden waste usually needs to be crushed into small pieces of biomass fuel.

[0003] Currently, the crushing process mainly involves feeding tree trunks and leaves into existing biomass raw material crushing devices. The blades in the device rotate and crush the tree trunks and leaves, and the centrifugal force generated by the rotation assists in the discharge process. The crushed material is then screened through a screen installed in the device, and the screened material is the final product of biomass fuel.

[0004] However, the following problems exist in the above crushing process: 1. It is usually difficult to ensure that the collected leaves and trunks are in a dry state, and the leaves and trunks themselves have a certain amount of moisture, especially fresh leaves and trunks. Therefore, the crushed material produced during the crushing process has a high humidity. The damp crushed material is easy to stick to the device and the screen surface, which in turn affects the effect and efficiency of the crushing operation and is prone to clogging.

[0005] 2. During the crushing process, when hard tree trunks and soft leaves are mixed and crushed, the significant differences in their physical properties (such as hardness and fiber structure) lead to inconsistent particle sizes. This difference can easily cause some material (especially incompletely crushed hard tree trunk fragments) to get stuck in the screen mesh, forming a blockage. Screen blockage not only reduces crushing efficiency but also affects the uniformity of the crushed material and the quality of the output, thus negatively impacting the overall efficiency and effectiveness of the crushing operation. Summary of the Invention

[0006] Therefore, it is necessary to provide an automatic biomass crushing device to solve the problems of the prior art.

[0007] This invention provides an automatic biomass crushing device, comprising: a base, a lower shell mounted on the upper surface of the base, an upper shell hinged to the lower shell, a leaf feeding port on the front end of the upper shell and a trunk feeding port on its rear end, and a discharge port at the lower end of the lower shell. Two frames distributed front and rear are welded together on the base and the lower shell. Two symmetrical rotating shafts are rotatably mounted on the two frames. A crushing mechanism is jointly mounted on the two rotating shafts. The crushing mechanism includes crushing components mounted on the rotating shafts and a screen located in the lower shell for screening the crushed material.

[0008] The lower housing is equipped with a vibration unit, which includes a rotating disk. The rotating disk is rotatably mounted on the front end face of the lower housing via a drive shaft. Multiple circumferentially evenly distributed pushing blocks are fixedly mounted on the rotating disk. A transverse plate that slides left and right and elastically cooperates with the pushing blocks is mounted on the lower housing. Two cleaning sections distributed left and right are installed inside the lower housing. The vibration unit also includes an amplitude adjustment section for adjusting the left and right vibration amplitude of the screen.

[0009] According to an advantageous embodiment, the crushing assembly includes a fixed disc and cutter discs arranged on the front and rear sides of the fixed disc. Two symmetrical waist-shaped plates are slidably arranged in the lower housing, and a screen is fixedly arranged between the two waist-shaped plates. Multiple circumferentially distributed shredding blades are fixedly installed on the front end face of the front cutter disc, and multiple circumferentially distributed through grooves are opened on the rear cutter disc. Cutting blades facing the rear are fixedly installed in the through grooves. Avoidance through grooves are opened on the waist-shaped plates to avoid the rotating shaft. Protective sleeves corresponding to the rotating shafts are fixedly arranged on the front and rear sides of the inner cavity of the lower housing to protect the corresponding rotating shafts.

[0010] According to an advantageous embodiment, a plurality of circumferentially distributed mounting bolts are fixedly provided between the fixed disc and the cutter head corresponding to the same rotating axis, and a disintegrating hammer is rotatably sleeved on the mounting bolts. A reinforcing member is welded and installed between the fixed disc and the adjacent cutter head.

[0011] According to an advantageous embodiment, the front end face of the front waist-shaped plate is provided with a through-hole corresponding to the leaf feeding port, and the rear end face of the rear waist-shaped plate is provided with a through-hole corresponding to the trunk feeding port. A blocking plate is fixedly provided on both the leaf feeding port and the trunk feeding port.

[0012] According to an advantageous embodiment, a connecting block is slidably connected through the front end of the lower housing. The connecting block is L-shaped, with its vertical section located on the front side of the lower housing. The rear end face of the connecting block is fixedly connected to the front waist plate. A transverse plate is slidably disposed on the front end face of the connecting block. Two left-right distributed return springs are fixedly disposed between the connecting block and the lower housing. The drive shaft is connected to the right rotating shaft via a belt drive.

[0013] According to an advantageous embodiment, the amplitude adjustment part includes locking bolts, and two locking bolts with axes extending from back to front are fixedly provided on the front end face of the connecting block. A receiving groove is provided through the transverse plate from front to back, and a locking nut is threadedly installed on the front end of the locking bolt after passing through the receiving groove.

[0014] According to an advantageous embodiment, the transverse plate has three positioning holes extending from top to bottom through it in the left and right directions. A movable plate is slidably mounted on the left end face of the connecting block in the left and right directions. A pre-positioning pin that mates with the positioning holes is fixedly provided on the right end face of the movable plate.

[0015] According to an advantageous embodiment, the cleaning part includes a bonding plate and a rubber cone disposed on the bonding plate for cleaning the screen. There are two bonding plates, both of which are welded and installed in the inner cavity of the lower housing. The two bonding plates are symmetrical from left to right and are symmetrically located on the left and right sides of the screen.

[0016] According to an advantageous embodiment, the bonding plate has an arc-shaped structure that fits into the arc-shaped section of the screen, and the rubber cone is fixedly disposed on the inner arc surface of the bonding plate and corresponds one-to-one with the mesh holes on the arc-shaped section of the screen, with the tip of the rubber cone facing the screen.

[0017] According to an advantageous embodiment, a cleaning brush is jointly installed on the end faces of two adjacent reinforcing members that are opposite to the same rotating shaft, and a cleaning scraper is jointly installed on the end faces of two other adjacent reinforcing members that are opposite to the rotating shaft. When the screen is at its maximum vibration amplitude, the cleaning scraper contacts the screen.

[0018] In summary, the present invention has at least one of the following beneficial effects: First, the present invention uses a vibration unit to make the screen move slightly left and right synchronously and generate vibration during the crushing operation. The vibration helps the crushed material adhering to the screen to fall off and pass through the screen to complete the feeding. When the amplitude adjustment unit makes the screen at the maximum vibration amplitude, the rubber cone can intermittently get into the corresponding through hole on the screen to unclog and clean the screen.

[0019] Second, during the crushing process, the present invention simultaneously uses a cleaning brush and a cleaning scraper to brush and scrape the screen during the full rotation, combined with vibration and the unblocking cleaning of the rubber cone head. Through multiple anti-adhesion methods, clogging problems are avoided, ensuring crushing efficiency, uniformity of crushed materials, and output quality.

[0020] Second, this invention uses the synchronous rotation of the shredder and the cutting blade to perform primary crushing of leaves and tree trunks respectively, and the force generated by the rotation of the breaking hammer to perform secondary crushing of the primary crushed material. The two-stage crushing improves the crushing effect and avoids the problem of clogging caused by the excessive size of the crushed material due to poor crushing effect. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 A first three-dimensional structural schematic diagram of an automatic biomass pulverizing device provided according to an embodiment of the present invention is shown.

[0023] Figure 2 A second three-dimensional structural schematic diagram of an automatic biomass pulverizing device provided according to an embodiment of the present invention is shown.

[0024] Figure 3 A partial cross-sectional view of an automatic biomass pulverizing device according to an embodiment of the present invention is shown.

[0025] Figure 4 A partial cross-sectional view of a screen, a bonding plate, and a guide plate provided according to an embodiment of the present invention is shown.

[0026] Figure 5 A three-dimensional structural schematic diagram of a rotating shaft, a shredding tool, and a cutting tool provided according to an embodiment of the present invention is shown.

[0027] Figure 6 A front view of the lower housing, bonding plate, and push block provided according to an embodiment of the present invention is shown.

[0028] Figure 7 A three-dimensional structural schematic diagram of a push block, a transverse plate, and a prepositioning pin provided according to an embodiment of the present invention is shown.

[0029] The above-mentioned attached drawings include the following reference numerals: 1. Base; 2. Leaf feeding port; 3. Trunk feeding port; 4. Frame; 5. Rotating shaft; 6. Crushing mechanism; 60. Crushing component; 600. Fixed plate; 601. Cutter disc; 602. Cutting blade; 603. Shredding blade; 604. Dispersing hammer; 605. Reinforcing member; 61. Waist plate; 62. Screen; 63. Protective sleeve; 64. Connecting interface; 640. Blocking plate; 7. Vibration unit; 70. Rotating disc; 71. Pushing block; 72. Transverse plate; 720. Connecting block; 721. Return spring; 73. Cleaning part; 730. Adhesive plate; 731. Rubber cone; 732. Cleaning brush; 733. Cleaning scraper; 74. Amplitude adjustment part; 740. Locking bolt; 741. Positioning hole; 742. Pre-positioning pin; 8. Guide plate. Detailed Implementation

[0030] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, an automatic biomass crushing device includes: a base 1, a lower shell welded to the upper surface of the base 1, an upper shell hinged to the lower shell, a leaf feeding port 2 fixedly provided on the front end face of the upper shell, two tree trunk feeding ports 3 fixedly provided on the rear end face, and a discharge port opened at the lower end of the lower shell.

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, two front-to-back distributed frames 4 are welded and installed on the base 1 and the lower housing. Two symmetrical rotating shafts 5 are rotatably mounted on the two frames 4, and a crushing mechanism 6 is mounted on the two rotating shafts 5. The crushing mechanism 6 includes a crushing component 60 mounted on the rotating shaft 5. The crushing component 60 includes a fixed plate 600 and two cutter discs 601 located on the front and rear sides of the corresponding fixed plate 600. Two symmetrical waist-shaped plates 61 are slidably mounted in the lower housing. A closed-loop screen 62 is fixedly mounted between the two waist-shaped plates 61. The screen 62 and the two waist-shaped plates 61 together form a crushing chamber. The waist-shaped plates 61 are provided with clearance grooves to avoid the rotating shafts 5. In order to avoid affecting the rotation of the rotating shafts 5 when the waist-shaped plates 61 drive the screen 62 to move left and right, protective sleeves 63 corresponding to the rotating shafts 5 are fixedly mounted on the front and rear sides of the inner cavity of the lower housing. The protective sleeves 63 protect the corresponding rotating shafts 5.

[0033] like Figure 1 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown, the lower housing is equipped with a vibration unit 7 for vibrating the screen 62. The vibration unit 7 includes a rotating disk 70. The rotating disk 70 is rotatably mounted on the front end face of the lower housing via a drive shaft extending from rear to front along its axis. Multiple circumferentially evenly distributed pushing blocks 71 are fixedly mounted on the rotating disk 70. A transverse plate 72, which cooperates with the pushing blocks 71 and vibrates the screen 62, is mounted on the front waist-shaped plate 61. Two left-right distributed cleaning sections 73 are welded and installed inside the lower housing. Each cleaning section 73 includes a bonding plate 730 and rubber cones 731 mounted on the bonding plate 730 for cleaning the screen 62. The vibration unit 7 also includes an amplitude adjustment section 74 for adjusting the left-right vibration amplitude of the screen 62. It should be noted that the base 1 can be mounted on an existing external mobile carrier, facilitating the movement of the device to the desired operating position. Furthermore, an existing blower (not shown in the figure) is installed at the discharge port to blow the pulverized mixture of leaves and tree trunks out of the lower housing, assisting the discharge process.

[0034] Workers feed leaves into leaf inlet 2 and tree trunks into trunk inlet 3. The trunks and leaves enter the crushing chamber, and simultaneously, an external motor drives the rotating shaft 5. The two crushing components 60 work together to double-crush the input trunks and leaves. The crushed leaves and trunks (hereinafter referred to as crushed material) fall onto the screen 62. Simultaneously, the pushing block 71 within the vibration unit 7 intermittently pushes the transverse plate 72, causing the screen 62 to vibrate. This helps the crushed material pass through the screen 62 and exit through the discharge port, preventing clogging. The amplitude adjustment unit 74 adjusts the left and right movement of the screen 62 to accommodate different levels of auxiliary material feeding requirements. When the amplitude adjustment unit 74 adjusts the screen 62 to its maximum movement amplitude, the cleaning unit 73 cleans the screen 62 to prevent clogging.

[0035] like Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, multiple circumferentially distributed shredding blades 603 are fixedly installed on the front end face of the front cutter head 601. Multiple circumferentially distributed through slots are opened on the rear cutter head 601, and cutting blades 602 facing the rear are fixedly installed in the through slots. Multiple circumferentially distributed mounting bolts are fixedly installed between the fixed plate 600 and the cutter head 601 corresponding to the same rotating shaft 5. Dispersing hammers 604 are rotatably sleeved on the mounting bolts. In order to improve the stability of the fixed plate 600 and the cutter head 601 during the rotation operation, a reinforcing member 605 is welded and installed between the fixed plate 600 and the adjacent cutter head 601. The rear side of the rotating shaft 5 is driven by an external existing motor (not shown in the figure) through belt drive.

[0036] like Figure 1 , Figure 2 and Figure 3 As shown, the front end face of the waist-shaped plate 61 is provided with a through-hole 64 opposite to the leaf feeding port 2, and the rear end face of the waist-shaped plate 61 is provided with a through-hole 64 opposite to the trunk feeding port 3. In order to prevent leaves and trunks from leaking out of the corresponding through-hole 64 during the left and right movement of the screen 62, a blocking plate 640 is fixedly provided on both the leaf feeding port 2 and the trunk feeding port 3 to block the through-hole 64.

[0037] like Figures 1 to 6 As shown, to adapt to the crushing operation of leaves and tree trunks with different hardness, a shredding blade 603 is set to meet the crushing requirements of leaves, and a cutting blade 602 is set to meet the crushing requirements of tree trunks. First, the external motor is powered on and drives the two rotating shafts 5 to rotate synchronously through belt drive, with the right rotating shaft 5 rotating clockwise and the left rotating shaft 5 rotating counterclockwise. Then, the operator puts the leaves into the crushing chamber through the leaf feeding port 2 and the tree trunks into the crushing chamber through the tree trunk feeding port 3. The rotating shafts 5 drive the shredding blades 603 and cutting blades 602 on them to rotate synchronously and crush the leaves and tree trunks respectively. The primary crushed material after the primary crushing enters the area where the dispersing hammer 604 is located. The dispersing hammer 604 crushes the primary crushed material in a secondary crushing by the force generated by its rotation, and obtains the final crushed material. The crushing effect is improved by two-stage crushing.

[0038] It should be noted that the leaf feeding port 2 is opposite to the middle area of ​​the two rotating shafts 5. Therefore, after the leaves pass through the leaf feeding port 2, they fall between the chopping blades 603 on the left and right sides through the corresponding interface 64, which increases the contact probability between the leaves and the chopping blades 603, thereby improving the primary crushing effect of the leaves. The two trunk feeding ports 3 are opposite to the two rear left and right cutter discs 601 respectively. When the trunks are fed, the trunks are fed through the trunk feeding port and pass through the corresponding interface 64, and then directly contact the cutting blades 602 for chopping, which improves the primary crushing effect of the trunks.

[0039] like Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, an L-shaped connecting block 720 is slidably disposed on the front end face of the lower housing. The vertical section of the connecting block 720 passes through the front end face of the lower housing. The rear end face of the connecting block 720 is fixedly connected to the front waist plate 61. The transverse plate 72 is slidably disposed on the front end face of the connecting block 720. Two left and right distributed return springs 721 are fixedly disposed between the connecting block 720 and the lower housing. The drive shaft is connected to the right rotating shaft 5 by belt drive.

[0040] During the crushing operation, the right-side rotating shaft 5 drives the drive shaft to rotate synchronously via belt transmission. The drive shaft drives the push block 71 on the rotating disk 70 to rotate synchronously. During the rotation, the push block 71 intermittently pushes the transverse plate 72, causing the transverse plate 72 to drive the waist plate 61 and the screen 62 to move synchronously to the right via the connecting block 720. This causes the return spring 721 to deform and store elastic potential energy. During the intermittent time when the push block 71 and the transverse plate 72 are misaligned, the return spring 721 releases the elastic potential energy, causing the transverse plate 72 to drive the waist plate 61 and the screen 62 to move and reset quickly. This causes the screen 62 to move back and forth slightly. The periodic reciprocating motion of the transverse plate 72 transmits the force to the screen 62 through the connection point. When the screen 62 is subjected to external force, it will vibrate due to inertia. The vibration is used to assist the final crushed material to fall through the screen 62 and be collected and discharged, avoiding the problem of the screen 62 becoming blocked and affecting the overall crushing operation.

[0041] like Figure 6 and Figure 7 As shown, the amplitude adjustment part 74 includes locking bolts 740. Two locking bolts 740 with axes extending from back to front are fixedly provided on the front end face of the connecting block 720. A receiving groove is provided through the transverse plate 72. After the front end of the locking bolt 740 passes through the receiving groove, a locking nut is threadedly installed.

[0042] like Figure 6 and Figure 7 As shown, the transverse plate 72 has three positioning holes 741 extending from top to bottom through it. The left end face of the connecting block 720 is slidably mounted with a movable plate. The right end face of the movable plate is fixedly provided with a pre-positioning pin 742 that cooperates with the positioning holes 741.

[0043] like Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the three positioning holes 741 correspond to the minimum vibration amplitude, medium vibration amplitude and maximum vibration amplitude from top to bottom, respectively. When adjusted to the maximum vibration amplitude, the screen 62 can intermittently contact the bonding plates 730 on both sides during the left and right movement. During the crushing process corresponding to the above three vibration amplitudes, the cutting blade 602 and the shredding blade 603 will not come into contact with the screen 62.

[0044] Move the horizontal plate 72 up and down and adjust its height. Then, tighten the locking nut to lock the horizontal plate 72 before resuming the crushing operation. After a long period of crushing, if the reciprocating range of the screen 62 is insufficient to meet the cleaning requirements of the screen 62 (this can be judged by the output volume and output speed), the external motor will temporarily stop operating. After the rotating shaft 5 stops rotating, manually loosen the locking nut and then adjust the height of the horizontal plate 72. The horizontal plate 72 will be initially positioned by the insertion and engagement between the pre-positioning pin 742 and the corresponding positioning hole 741. The process facilitates the vertical movement of the transverse plate 72 to a designated position, limiting the adjustment range of the transverse plate 72 and preventing excessive adjustment of the transverse plate 72 from causing collisions between the screen 62 and the shredding blade 603 and cutting blade 602 during subsequent horizontal movement. During the height adjustment of the transverse plate 72, when the transverse plate 72 moves downward, the contact area between the transverse plate 72 and the pushing block 71 increases. The pushing block 71 pushes the transverse plate 72, increasing the horizontal movement distance of the screen 62 and thus increasing the vibration amplitude of the screen 62. Conversely, when the transverse plate 72 moves upward, the contact area between the transverse plate 72 and the pushing block 71 decreases.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the cleaning section 73 has two bonding plates 730, both of which are welded and installed in the inner cavity of the lower housing. The two bonding plates 730 are symmetrically located on the left and right sides of the screen 62. The bonding plates 730 have an arc-shaped structure that fits into the arc-shaped section of the screen 62. The rubber cones 731 are fixedly set on the inner arc surface of the bonding plates 730 and correspond one-to-one with the mesh holes on the arc-shaped section of the screen 62. The tips of the rubber cones 731 face the screen 62.

[0046] like Figures 1 to 7 As shown, it should be noted that the transverse plate 72 is initially located off the middle of the lower housing. At this time, the distance between the screen 62 and the right-side bonding plate 730 is smaller than the distance between the screen 62 and the left-side bonding plate 730. Therefore, when the maximum vibration amplitude is reached, during the process of the return spring 721 being compressed and deformed to return to its original position, under the elastic characteristics and the inertia of the connecting block 720 and the screen 62, the screen 62 will move to the left a certain distance (i.e., the damping oscillation process of the return spring 721), and finally return to its initial position. During this process, the screen 62 contacts and adheres to the right-side bonding plate 730, and the rubber cone 731 clears and cleans the mesh holes on the arc section of the screen 62. During the maximum vibration amplitude of the screen 62, through the cooperation of the pushing block 71 and the transverse plate 72, the left side of the screen 62 intermittently contacts and adheres to the left-side bonding plate 730, and the rubber cone 731 clears and cleans the mesh holes on the arc section of the screen 62.

[0047] like Figure 3 and Figure 5 As shown, two adjacent reinforcing members 605, corresponding to the same rotating shaft 5, have a cleaning brush 732 installed on their end faces away from the rotating shaft 5. Another two adjacent reinforcing members 605 have a cleaning scraper 733 installed on their end faces away from the rotating shaft 5. When the screen 62 is at its maximum vibration amplitude, the cleaning scraper 733 contacts the screen 62.

[0048] When the screen 62 is not at its maximum vibration amplitude, the reinforcing member 605 drives the cleaning brush 732 and the cleaning scraper 733 to rotate a full circle, stirring the crushed material in the crushing chamber, thereby increasing the contact between the crushed material and the dispersing hammer 604 and improving the overall crushing effect. When the screen 62 is at its maximum vibration amplitude, the cleaning brush 732 and the cleaning scraper 733 contact the corresponding arc-shaped section of the screen 62 and can brush and scrape the arc-shaped section of the screen 62 to clean it, avoiding the problem of crushed material adhering or accumulating on the arc-shaped section of the screen 62 and affecting the overall crushing operation.

[0049] like Figure 4 As shown, in order to guide the crushed material out of the lower housing, the bonding plate 730 and the bottom of the inner cavity of the lower housing are jointly fixed with a guide plate 8. The two guide plates 8 form a figure-eight feeding channel with the small diameter end facing down and aligned with the discharge port.

[0050] In the description of this invention, it should be understood that directional terms such as "front, back, up, down, left, right," "horizontal, vertical, horizontal," and "top, bottom," indicating directions or positional relationships, are generally based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner or outer contours of each component itself. Furthermore, in the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. An automatic biomass pulverizing device, comprising: The upper part is equipped with a base with a lower shell, and the lower shell is hinged to an upper shell. The upper shell is characterized by having a leaf feeding port and a trunk feeding port at its front and rear ends, respectively, and an outlet at the lower end of the lower shell. Crushing mechanism; two symmetrical rotating shafts are rotatably arranged on the lower housing, and the crushing mechanism includes crushing components arranged on the rotating shafts and a screen located in the lower housing for screening crushed materials; Vibration unit; The vibration unit includes a rotating disk rotatably mounted on the front end face of the lower housing and an amplitude adjustment part for adjusting the vibration amplitude of the screen. Multiple push blocks are fixedly mounted on the rotating disk. The lower housing has a horizontal sliding plate that slides left and right and is elastically set to cooperate with the push block. Two cleaning parts are installed inside the lower housing, distributed left and right. When the crushing component crushes leaves and tree trunks, the rotating disc drives the push block to rotate, which causes the transverse plate to move the screen back and forth periodically, so that the screen vibrates and helps the crushed material to be discharged from the outlet. The vibration amplitude of the screen is adjusted by the amplitude adjustment unit according to the discharge situation. When the screen is at the maximum vibration amplitude, the cleaning unit unclogs and cleans the screen.

2. The automatic biomass pulverizing device according to claim 1, characterized in that: The crushing assembly includes a fixed disc and cutter discs arranged on its front and rear sides. Two symmetrical waist-shaped plates are slidably arranged in the lower housing. A closed-loop screen is fixed between the two waist-shaped plates. Multiple circumferentially distributed shredding blades are fixedly installed on the front end face of the cutter discs on the front side. Multiple circumferentially distributed through slots are opened on the cutter discs on the rear side. Cutting blades facing the rear are fixedly installed in the through slots. Avoidance through slots are opened on the waist-shaped plates to avoid the rotating shaft.

3. The automatic biomass pulverizing device according to claim 2, characterized in that: Multiple circumferentially distributed mounting bolts are fixedly installed between the fixed disc and the cutter head corresponding to the same rotating axis, and a disintegrating hammer is rotatably sleeved on the mounting bolt; a reinforcing member is welded and installed between the fixed disc and the adjacent cutter head.

4. The automatic biomass pulverizing device according to claim 1, characterized in that: The front end face of the waist-shaped plate has a through-hole opening opposite to the leaf feeding port, and the rear end face of the waist-shaped plate has a through-hole opening opposite to the trunk feeding port. Both the leaf feeding port and the trunk feeding port are fixedly equipped with blocking plates.

5. The automatic biomass pulverizing device according to claim 1, characterized in that: The lower housing has a connecting block that extends through and slides to the front end. The rear end face of the connecting block is fixedly connected to the front waist plate. The transverse plate is slidably mounted on the front end face of the connecting block. Two left-right distributed reset springs are fixedly mounted between the connecting block and the lower housing. The rotating disk is mounted to rotate via a drive shaft. The drive shaft is connected to the right rotating shaft via a belt drive.

6. The automatic biomass pulverizing device according to claim 5, characterized in that: The amplitude adjustment part includes locking bolts. Two locking bolts with axes extending from back to front are fixedly provided on the front end face of the connecting block. A receiving groove is provided through the front and back of the transverse plate. After the front end of the locking bolt passes through the receiving groove, a locking nut is threaded on it.

7. The automatic biomass pulverizing device according to claim 5, characterized in that: The transverse plate has three positioning holes extending from top to bottom through it. A movable plate is slidably installed on the left end face of the connecting block, and a pre-positioning pin that mates with the positioning holes is fixedly installed on the right end face of the movable plate.

8. The automatic biomass pulverizing device according to claim 1, characterized in that: The cleaning section includes a bonding plate and a rubber cone head disposed on the bonding plate for cleaning the screen. There are two bonding plates, both of which are welded and installed in the inner cavity of the lower housing. The two bonding plates are symmetrically located on the left and right sides of the screen.

9. The automatic biomass pulverizing device according to claim 8, characterized in that: The bonding plate has an arc-shaped structure that fits into the arc-shaped section of the screen. The rubber cone is fixedly set on the inner arc surface of the bonding plate and corresponds one-to-one with the mesh holes on the arc-shaped section of the screen. The tip of the rubber cone faces the screen.

10. The automatic biomass pulverizing device according to claim 3, characterized in that: A cleaning brush is installed on the end faces of two adjacent reinforcing members that are away from the rotating shaft, corresponding to the same rotating shaft. A cleaning scraper is installed on the end faces of two other adjacent reinforcing members that are away from the rotating shaft. When the screen is at its maximum vibration amplitude, the cleaning scraper contacts the screen.

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