Straw pulverizer

Abstract

The utility model belongs to the technical field of straw smashing, and particularly relates to a straw smashing machine which comprises a smashing barrel, a rotating pipe, a plurality of screening nets, a driving shaft, a plurality of cutting knives, a first motor, a driving mechanism, a feeding mechanism, a discharging hopper, a plurality of air barrels, a plurality of blocking nets, a plurality of draught fans and a dust collecting mechanism. Straw is driven to continuously turn over and roll through the rotating pipe rotating in the circumferential direction, and it is ensured that the straw is fully smashed; the screening net is arranged on the rotating pipe and matched with the annular groove, dynamic screening can be carried out, it is ensured that the size requirement is met, and efficient screening is achieved; stable airflow is formed in the annular groove through the air duct, the baffle net and the fan, directional separation of dust and impurities is achieved, and the annular design of the annular groove is matched, so that the airflow stability is improved, the separation path is prolonged, and straw particles are prevented from being brought out; pores of the screening net are reversely scoured through airflow, and the screening net continuously rotates in a matched mode, so that the blocking prevention effect is achieved, and long-term stable operation of screening is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of straw crushing technology, and specifically relates to a straw crusher. Background Technology

[0002] Straw plastics refer to bio-based plastics or biodegradable materials produced using crop straw as raw material. These materials can replace traditional petroleum-based plastics, offering advantages such as environmental friendliness and biodegradability. In the pretreatment stage, straw crushers are used to process the straw into forms suitable for subsequent processing.

[0003] However, existing straw crushers cannot effectively separate and remove dust and impurities contained in straw during the crushing process, which seriously reduces product quality and is not conducive to subsequent processing; moreover, the crushing and screening efficiency is not high and clogging is easy to occur, resulting in poor overall performance. Utility Model Content

[0004] The purpose of this invention is to provide a straw crusher that solves the technical problems of existing straw crushers, such as ineffective removal of dust and impurities, low crushing and screening efficiency, and easy clogging.

[0005] This utility model discloses a straw crusher, comprising:

[0006] The crushing cylinder is arranged horizontally and has an annular groove formed on its inner circumference;

[0007] A rotating tube is coaxially disposed inside the crushing cylinder and rotatably connected to the crushing cylinder;

[0008] Multiple screening screens are annularly embedded around the outer periphery of the rotating tube and correspond to the annular groove.

[0009] A drive shaft is coaxially disposed inside the crushing cylinder and rotatably connected to the crushing cylinder;

[0010] Multiple cutting blades are mounted at intervals on the drive shaft;

[0011] The first motor is installed at one end of the crushing cylinder and is connected to the drive shaft for transmission.

[0012] A drive mechanism is installed at one end of the crushing cylinder and is connected to the rotating tube in a transmission manner.

[0013] The feeding mechanism is installed at the other end of the crushing cylinder, and its outlet end is connected to the crushing cylinder and located inside the rotating tube;

[0014] A discharge hopper is installed at the bottom of the crushing cylinder and is connected to the annular groove;

[0015] Multiple air ducts are installed at the bottom of the discharge hopper, symmetrically arranged on both sides of the drive shaft, and their outlet ends are connected to the inside of the discharge hopper;

[0016] Multiple baffles are installed in a corresponding manner at the outlet end of the air duct;

[0017] Multiple fans are installed inside the air duct, one in each order;

[0018] The dust collection mechanism is located at the top of the crushing cylinder, and its inlet end is connected to the top center of the annular groove.

[0019] This application enables continuous tumbling and rolling of straw, ensuring that the straw is fully crushed; it can dynamically screen straw particles to ensure that they all meet the size requirements, and the rotation speed is adjustable, achieving efficient screening; it also forms a stable airflow, realizing the directional separation of dust and impurities, improving airflow stability, and extending the separation path to prevent straw particles from being carried out; it plays a role in preventing blockage and ensuring long-term stable operation of screening.

[0020] Based on the above technical solution, the solution of this application can be further improved as follows:

[0021] Preferably, the dust collection mechanism includes:

[0022] The dust collection box has a semi-circular cross-section and is installed on the top of the crushing cylinder. Its bottom center is connected to the annular groove, and its bottom ends are detachably fitted with door covers.

[0023] An exhaust duct is located at the top center of the dust collection box;

[0024] The flow guide plate is arc-shaped and installed in the center of the dust collection box to divide the inner cavity of the dust collection box into a lower flow channel, an upper flow channel and storage cavities on both sides;

[0025] Two filter screens are installed at both ends of the upper flow channel. This solution improves the overall dust removal efficiency of the crusher, ensures a clean working environment and stable operation of the equipment, and is simple to operate, making it convenient for users to perform daily maintenance and cleaning.

[0026] Preferably, it further includes:

[0027] Two annular plates are fitted onto the rotating tube and respectively adhere to the inner walls of the annular groove on both sides;

[0028] Multiple scraper rods are spaced apart between the two ring plates and fit against the bottom of the ring groove. This design provides a shielding and sealing effect, preventing dust and impurities from entering the gap between the crushing cylinder and the rotating tube, ensuring the stable operation of the equipment, and scraping and cleaning the bottom of the ring groove to prevent dust and impurities from remaining.

[0029] Preferably, a partition is provided on the inner circumference of the rotating tube near the end of the first motor, and the partition is rotatably sleeved on the drive shaft;

[0030] The drive mechanism includes:

[0031] The second motor is installed at one end of the crushing cylinder;

[0032] A toothed ring is installed on the inner circumference of the rotating tube and is located on the side of the partition closer to the first motor;

[0033] The gear meshes with the gear ring;

[0034] The first rotating shaft is connected to the gear at one end and to the second motor drive at the other end. With this solution, stable drive of the rotating tube is achieved while ensuring the sealing of the inside of the crushing cylinder. It is not affected by straw and can operate stably for a long time.

[0035] Preferably, the feeding mechanism includes:

[0036] The feed box is circular.

[0037] The second rotating shaft is coaxially disposed inside the feed box and rotatably connected to the feed box;

[0038] Multiple baffles are evenly arranged around the outer periphery of the second rotating shaft and fit against the inner periphery of the feed box;

[0039] A feeding hopper is located at the top of the feeding box and is connected to the inside of the feeding box;

[0040] A guide tube is located at the bottom of the feed box and is inclined, with one end connected to the inside of the feed box and the other end connected to the inside of the crushing cylinder;

[0041] The power source is installed outside the feed box and is connected to the second rotating shaft for transmission. This solution can not only provide continuous and stable material feeding, but also avoid direct communication between the inside of the crushing cylinder and the outside, thereby ensuring the sealing of the inside of the crushing cylinder and preventing the leakage of dust and impurities.

[0042] Preferably, the power source is a gearbox, located between the feed box and the crushing cylinder, with its input end connected to the drive shaft and its output end connected to the second rotating shaft. This design enables the drive shaft to drive the second rotating shaft to rotate, thereby achieving linkage, which reduces manufacturing costs and simplifies operation.

[0043] Preferably, the outer two ends of the rotating tube are rotatably connected to the crushing cylinder via bearings; this solution improves the stability and smoothness of rotation and extends the service life of the equipment.

[0044] Through the above technical solution, this utility model achieves the following beneficial effects:

[0045] 1. This application uses a circumferentially rotating tube to continuously tumble and roll the straw, thereby ensuring that the straw is fully crushed;

[0046] 2. This application enables dynamic screening of straw particles by setting a screening screen on a rotating tube and cooperating with an annular groove, ensuring that the produced straw particles all meet the size requirements, and its rotation speed is adjustable, which can change the contact frequency between the screening screen and the material in real time, thereby achieving efficient screening;

[0047] 3. This application uses a combination of multiple air ducts, baffles and fans to form a stable airflow in the annular groove, which realizes the directional separation of dust and impurities. In addition, the annular design of the annular groove improves the stability of the airflow and extends the separation path, thus avoiding the situation where straw particles are carried out.

[0048] 4. This application prevents clogging and ensures long-term stable operation of the screening process by reverse-flowing the airflow through the duct and combining it with the continuous rotation of the screening screen. Attached Figure Description

[0049] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0050] Figure 1 This is a front sectional view of the straw crusher described in a specific embodiment of the present utility model;

[0051] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0052] Figure 3 for Figure 1 The image shows a side sectional view of the feeding mechanism in the straw crusher.

[0053] Figure 4 for Figure 1 The image shows a side sectional view of the straw crusher.

[0054] Explanation of reference numerals in the attached figures:

[0055] 1. Crushing drum; 2. Rotating tube; 3. Screening screen; 4. Drive shaft; 5. Cutting blade; 6. First motor; 7. Drive mechanism; 8. Feeding mechanism; 9. Discharge hopper; 10. Air duct; 11. Baffle screen; 12. Fan; 13. Dust collection mechanism; 14. Ring plate; 15. Scraper; 16. Baffle plate; 17. Bearing;

[0056] 101. Ring groove; 71. Second motor; 72. Gear ring; 73. Gear; 74. First rotating shaft; 81. Feed box; 82. Second rotating shaft; 83. Baffle; 84. Feed hopper; 85. Guide pipe; 86. Power source; 131. Dust collection box; 132. Air outlet pipe; 133. Drainage plate; 134. Filter screen;

[0057] 1311. Door cover; 1312. Lower flow channel; 1313. Upper flow channel; 1314. Storage cavity. Detailed Implementation

[0058] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0059] First, it should be noted that some directional terms used in the following description to clearly illustrate the technical solution of this utility model, such as the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," are all derived from the normal orientation of the components in the straw crusher. They are only used to facilitate the description of this utility model and simplify the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0060] 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 number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0061] In this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" 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 direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] To better understand the above technical solutions, the following will provide a detailed description of the technical solutions in conjunction with the accompanying drawings and specific embodiments.

[0063] Example:

[0064] like Figures 1-4 As shown in the figure, this application discloses a straw crusher for crushing straw. Its specific structure includes: a crushing cylinder 1, a rotating tube 2, multiple screening screens 3, a drive shaft 4, multiple cutting blades 5, a first motor 6, a drive mechanism 7, a feeding mechanism 8, a discharge hopper 9, multiple air ducts 10, multiple baffles 11, multiple fans 12, and a dust collection mechanism 13.

[0065] The crushing cylinder 1 is arranged horizontally and has an annular groove 101 formed on its inner circumference. The annular groove 101 is used to cooperate with the screening screen 3 to achieve the screening function.

[0066] The rotating tube 2 is coaxially arranged inside the crushing cylinder 1 and is rotatably connected to the crushing cylinder 1, which ensures rotational stability, and the inner cavity is used for straw crushing.

[0067] Multiple screening screens 3 are annularly embedded on the outer periphery of the rotating tube 2 and correspond to the annular groove 101, used to screen out straw particles of appropriate size.

[0068] The drive shaft 4 is coaxially disposed inside the crushing cylinder 1 and is rotatably connected to the crushing cylinder 1 to drive the cutting blade 5 to rotate.

[0069] Multiple cutting blades 5 are spaced apart on the drive shaft 4 for cutting straw.

[0070] The first motor 6 is installed at one end of the crushing cylinder 1 and is connected to the drive shaft 4 for transmission, so as to provide power to make the drive shaft 4 and the cutting blade 5 rotate.

[0071] The drive mechanism 7 is installed at one end of the crushing cylinder 1 and is connected to the rotating tube 2 for driving the rotating tube 2 to rotate.

[0072] The feeding mechanism 8 is installed at the other end of the crushing cylinder 1, and its outlet end is connected to the crushing cylinder 1 and located inside the rotating tube 2. It is used to feed straw into the inside of the rotating tube 2 and keep the crushing cylinder 1 closed, thereby preventing dust and impurities from escaping.

[0073] The discharge hopper 9 is installed at the bottom of the crushing cylinder 1 and is connected to the annular groove 101 to collect the straw particles after screening.

[0074] Multiple air ducts 10 are installed at the bottom of the discharge hopper 9 and symmetrically arranged on both sides of the drive shaft 4, with their outlet ends connected to the inside of the discharge hopper 9, for inputting airflow into the annular groove 101.

[0075] Multiple baffles 11 are installed one-to-one at the outlet end of the ventilation duct 10 to prevent straw particles from leaking out through the ventilation duct 10 while allowing airflow to pass through.

[0076] Multiple fans 12 are installed one-to-one inside the air duct 10 to provide airflow power.

[0077] The dust collection mechanism 13 is located at the top of the crushing cylinder 1, and its inlet end is connected to the top center of the annular groove 101. It is used to collect the separated dust and impurities to ensure a clean working environment.

[0078] The above technical solution is used as follows:

[0079] During crushing, straw is fed into the rotating tube 2 through the feeding mechanism 8, and then the first motor 6 is started. The first motor 6 drives the cutting blade 5 to rotate in the rotating tube 2 through the drive shaft 4, thus performing preliminary cutting of the straw.

[0080] During screening, the drive mechanism 7 drives the rotating tube 2 to rotate circumferentially inside the crushing cylinder 1, thereby causing the straw to roll and further crush the initially cut straw. The crushed straw particles will pass through the screening screen 3 and fall into the annular groove 101, which ensures that only particles of the appropriate size can pass through, while larger particles continue to be further crushed by the cutting blade 5 inside the rotating tube 2 until they reach the appropriate size. The straw particles falling into the annular groove 101 will finally slide into the discharge hopper 9 and be discharged from the bottom outlet of the discharge hopper 9.

[0081] During dust removal, the blower 12 is started, which generates airflow in the air duct 10. The airflow blows obliquely upward along the air duct 10, blowing into the annular groove 101 and contacting the falling straw particles. This blows the dust and impurities in the straw particles upward, while the straw particles continue to fall. Thus, the dust and impurities rise along the annular groove 101 under the influence of the airflow and enter the dust collection mechanism 13, completing the dust removal operation.

[0082] When the rotating tube 2 rotates to a position where a certain screening screen 3 is directly opposite the air duct 10, the airflow will impact the screening screen 3 in the opposite direction, thereby blowing away the straw particles that are blocked in the screening screen 3. In addition, when the rotating tube 2 rotates to a position where a certain screening screen 3 is at its highest point, the straw particles that are blocked on the screening screen 3 will also fall off under the action of gravity. The two work together to ensure the long-term stable operation of the screening.

[0083] This utility model has the following technical effects:

[0084] By setting up a circumferentially rotating tube 2, the straw can be continuously turned and rolled, thereby ensuring that the straw can be fully crushed.

[0085] By setting a screening screen 3 on the rotating tube 2 and cooperating with the annular groove 101, the straw particles can be dynamically screened to ensure that the produced straw particles meet the size requirements. Moreover, its rotation speed is adjustable, which can change the contact frequency between the screening screen 3 and the material in real time, thereby achieving efficient screening.

[0086] By setting up a combination of multiple air ducts 10, baffles 11 and fans 12, a stable airflow is formed in the annular groove 101, realizing the directional separation of dust and impurities. In addition, the annular design of the annular groove 101 improves the stability of the airflow and extends the separation path, avoiding the situation where straw particles are carried out.

[0087] The airflow from the symmetrical air duct 10 reverses and washes the pores of the screening screen 3. Combined with the continuous rotation of the screening screen 3, this helps to prevent clogging and ensures the long-term stable operation of the screening process.

[0088] In some embodiments, such as Figure 1 and Figure 4 As shown, the dust collection mechanism 13 includes: a dust collection box 131, an air outlet duct 132, a flow guide plate 133, and two filter screens 134, the specific configuration of which is as follows:

[0089] The dust collection box 131 has a semi-circular cross-section and is tightly installed on the top of the crushing cylinder 1. The bottom center is connected to the annular groove 101 to ensure that dust and impurities can smoothly enter the dust collection box 131. Door covers 1311 are detachably installed at both ends of the bottom to facilitate cleaning of the dust and impurities inside, as well as to facilitate maintenance and repair.

[0090] The air outlet duct 132 is located at the top center of the dust collection box 131 and is used to discharge the filtered clean air.

[0091] The flow guide plate 133 is arc-shaped and installed in the center of the dust collection box 131. It is used to divide the inner cavity of the dust collection box 131 into a lower flow channel 1312, an upper flow channel 1313 and storage cavities 1314 located on both sides. This ensures that the dust and impurities entering the dust collection box 131 can flow along a predetermined path, thereby improving the filtration efficiency. The design of the storage cavity 1314 provides temporary storage space for dust and impurities to prevent blockage.

[0092] Two filters 134 are installed at both ends of the upper flow channel 1313 to ensure that the air entering the upper flow channel 1313 can be fully filtered to remove dust and impurities, and to allow the dust and impurities to fall into the storage chamber 1314.

[0093] When dust and impurities are carried into the dust collection box 131 by the airflow, they first enter the lower flow channel 1312, and then flow along predetermined paths to the storage chambers 1314 on both sides. Upon entering the upper flow channel 1313, they are filtered by the filter screen 134, and the dust and impurities fall into the storage chamber 1314 under gravity. Finally, clean air is discharged from the dust collection mechanism 13 through the exhaust pipe 132, while the dust and impurities are collected in the storage chamber 1314. After long-term use, the dust and impurities collected in the storage chamber 1314 can be cleaned by opening the door cover 1311.

[0094] The above-described design of the dust collection mechanism 13 improves the overall dust removal efficiency of the crusher, ensures a clean working environment and stable operation of the equipment, and is simple to operate, making it convenient for users to perform daily maintenance and cleaning.

[0095] In some embodiments, such as Figure 1 and Figure 4 As shown, it also includes: two ring plates 14 and multiple scraper bars 15, specifically configured as follows:

[0096] Two ring plates 14 are fitted onto the rotating tube 2 and respectively fit against the inner walls of the ring groove 101, which plays a role in shielding and sealing, preventing dust and impurities from entering the gap between the crushing cylinder 1 and the rotating tube 2, thus ensuring the stable operation of the equipment.

[0097] Multiple scraper rods 15 are spaced apart between the two ring plates 14 and fit against the bottom of the ring groove 101 to scrape and clean the bottom of the ring groove 101, avoiding the residue of dust, impurities and other contaminants.

[0098] In some embodiments, such as Figure 1 and Figure 2 As shown, a partition plate 16 is provided at one end of the inner circumference of the rotating tube 2 near the first motor 6. The partition plate 16 is rotatably sleeved on the drive shaft 4 to isolate a closed space for installing the drive mechanism 7, thereby ensuring that it is not affected by straw and improving the operational stability.

[0099] In this embodiment, the drive mechanism 7 includes: a second motor 71, a gear ring 72, a gear 73, and a first rotating shaft 74, specifically configured as follows:

[0100] The second motor 71 is installed at one end of the crushing cylinder 1 to provide power;

[0101] The toothed ring 72 is installed on the inner circumference of the rotating tube 2 and is located on the side of the partition 16 near the first motor 6, for driving the rotating tube 2 to rotate;

[0102] Gear 73 meshes with gear ring 72;

[0103] One end of the first rotating shaft 74 is connected to the gear 73, and the other end is connected to the second motor 71 for transmission.

[0104] During driving, the second motor 71 drives the gear 73 to rotate through the first rotating shaft 74. Since the gear 73 meshes with the gear ring 72, it can drive the gear ring 72 to rotate, thereby driving the rotating tube 2 to rotate.

[0105] Through the above design of the drive mechanism 7, a stable drive for the rotation of the rotating tube 2 is achieved while ensuring the internal sealing of the crushing cylinder 1. Moreover, it is not affected by straw and can operate stably for a long time.

[0106] In some embodiments, such as Figure 1 and Figure 3 As shown, the feeding mechanism 8 includes: a feeding box 81, a second rotating shaft 82, multiple baffles 83, a feeding hopper 84, a guide pipe 85, and a power source 86, configured as follows:

[0107] The feed box 81 is circular and serves as the main body, used to receive and temporarily store materials to be crushed;

[0108] The second rotating shaft 82 is coaxially disposed inside the feed box 81 and is rotatably connected to the feed box 81. It is used to drive the baffle 83 to rotate, thereby changing the position of the material inside the feed box 81.

[0109] Multiple baffles 83 are evenly arranged around the outer periphery of the second rotating shaft 82 and fit against the inner periphery of the feed box 81, thereby dividing the inner cavity of the feed box 81 into multiple fan-shaped chambers.

[0110] The feed hopper 84 is located at the top of the feed box 81 and is connected to the inside of the feed box 81. It serves as the inlet for materials to enter the feed box 81, making it convenient for users to pour in the materials to be crushed.

[0111] The guide tube 85 is located at the bottom of the feed box 81 and is inclined. One end of the guide tube is connected to the inside of the feed box 81 and the other end is connected to the inside of the crushing cylinder 1. It is used to smoothly guide the material into the crushing cylinder 1.

[0112] The power source 86 is installed outside the feed box 81 and is connected to the second rotating shaft 82 for transmission to provide the necessary power.

[0113] Through the above-mentioned further design of the feeding mechanism 8, it is possible to continuously and stably feed materials while avoiding direct communication between the inside of the crushing cylinder 1 and the outside world, thereby ensuring the sealing of the inside of the crushing cylinder 1 and preventing the leakage of dust and impurities.

[0114] Based on the above embodiments, such as Figure 1 As shown, the power source 86 is a gearbox, which is located between the feed box 81 and the crushing cylinder 1. Its input end is connected to the drive shaft 4, and its output end is connected to the second rotating shaft 82.

[0115] By setting the power source 86 as a transmission, the drive shaft 4 can drive the second rotating shaft 82 to rotate, thereby achieving linkage, which reduces production and manufacturing costs and simplifies operation.

[0116] In some embodiments, such as Figure 2 As shown, the two ends of the outer periphery of the rotating tube 2 are rotatably connected to the crushing cylinder 1 through bearings 17, which improves the stability and smoothness of rotation and extends the service life of the equipment.

[0117] Numerous specific details are set forth in this specification. However, it will be understood that embodiments of this invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0118] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A straw crusher, characterized in that, include: The crushing cylinder is arranged horizontally and has an annular groove formed on its inner circumference; A rotating tube is coaxially disposed inside the crushing cylinder and rotatably connected to the crushing cylinder; Multiple screening screens are annularly embedded around the outer periphery of the rotating tube and correspond to the annular groove. A drive shaft is coaxially disposed inside the crushing cylinder and rotatably connected to the crushing cylinder; Multiple cutting blades are mounted at intervals on the drive shaft; The first motor is installed at one end of the crushing cylinder and is connected to the drive shaft for transmission. A drive mechanism is installed at one end of the crushing cylinder and is connected to the rotating tube in a transmission manner. The feeding mechanism is installed at the other end of the crushing cylinder, and its outlet end is connected to the crushing cylinder and located inside the rotating tube; A discharge hopper is installed at the bottom of the crushing cylinder and is connected to the annular groove; Multiple air ducts are installed at the bottom of the discharge hopper, symmetrically arranged on both sides of the drive shaft, and their outlet ends are connected to the inside of the discharge hopper; Multiple baffles are installed in a corresponding manner at the outlet end of the air duct; Multiple fans are installed inside the air duct, one in each order; The dust collection mechanism is located at the top of the crushing cylinder, and its inlet end is connected to the top center of the annular groove.

2. The straw crusher according to claim 1, characterized in that, The dust collection mechanism includes: The dust collection box has a semi-circular cross-section and is installed on the top of the crushing cylinder. Its bottom center is connected to the annular groove, and its bottom ends are detachably fitted with door covers. An exhaust duct is located at the top center of the dust collection box; The flow guide plate is arc-shaped and installed in the center of the dust collection box to divide the inner cavity of the dust collection box into a lower flow channel, an upper flow channel and storage cavities on both sides; Two filter screens are installed at both ends of the upper flow channel, respectively.

3. The straw crusher according to claim 1, characterized in that, Also includes: Two annular plates are fitted onto the rotating tube and respectively fit against the inner walls of the annular groove on both sides; Multiple scraper rods are spaced apart between the two ring plates and fit against the bottom of the ring groove.

4. The straw crusher according to claim 1, characterized in that, A partition is provided on the inner circumference of the rotating tube near the end of the first motor, and the partition is rotatably sleeved on the drive shaft; The drive mechanism includes: The second motor is installed at one end of the crushing cylinder; A toothed ring is installed on the inner circumference of the rotating tube and is located on the side of the partition closer to the first motor; The gear meshes with the gear ring; The first rotating shaft is connected to the gear at one end and to the second motor drive at the other end.

5. The straw crusher according to claim 1, characterized in that, The feeding mechanism includes: The feed box is circular. The second rotating shaft is coaxially disposed inside the feed box and rotatably connected to the feed box; Multiple baffles are evenly arranged around the outer periphery of the second rotating shaft and fit against the inner periphery of the feed box; A feeding hopper is located at the top of the feeding box and is connected to the inside of the feeding box; A guide tube is located at the bottom of the feed box and is inclined, with one end connected to the inside of the feed box and the other end connected to the inside of the crushing cylinder; The power source is installed outside the feed box and is connected to the second rotating shaft for transmission.

6. The straw crusher according to claim 5, characterized in that, The power source is a gearbox, which is located between the feed box and the crushing cylinder. Its input end is connected to the drive shaft, and its output end is connected to the second rotating shaft.

7. The straw crusher according to claim 1, characterized in that, The outer two ends of the rotating tube are rotatably connected to the crushing cylinder via bearings.

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