Straw smashing device for agricultural machinery

Abstract

The invention discloses a straw crushing device for agricultural machinery, relates to the field of straw recovery, and aims to solve the problems that after straws are crushed by an existing crushing device in the prior art, crushed straws are fluffy, and the loading rate of a loading bag during bagging of the crushed straws is influenced. The lower end of the crushing bin is fixedly connected with a conveying bin, one side of the conveying bin is fixedly connected with a conical extrusion bin, the middle of the conveying bin and the middle of the conical extrusion bin are jointly and rotationally connected with a rotating shaft, and the rotating shaft is fixedly provided with a circular spiral blade in the conveying bin; a conical spiral blade is fixedly arranged on the rotating shaft in the conical extrusion bin, an air outlet is formed in the middle of the front end of the conveying bin, a blocking net is fixedly arranged in the air outlet, a dust removal box is connected to the outer side of the air outlet, and a fixing pipe is fixedly connected to the middle of the front end face in the dust removal box; and the rear end of the fixed pipe is connected with an annular dust removal net.

Description

Technical Field

[0001] The invention relates to the field of straw recycling, in particular to a straw crushing device for agricultural machinery. Background Art

[0002] Straw recycling refers to the process of collecting, processing and reusing the straw left after crop harvesting. This process aims to maximize resource utilization and protect the environment. Straw recycling has multiple uses and benefits. First, the baled straw can be transported to power plants for incineration to generate electricity, bringing added value to farmers. Secondly, straw can be used as roughage for the livestock industry, reducing the cost of raising cattle and sheep and increasing the enthusiasm of farmers. In addition, recycled straw can also be used as biomass energy to produce biomass fuel. Finally, through straw recycling, air pollution caused by burning straw can be reduced and environmental problems can be solved. Straw needs to be pre-crushed by a crushing device when it is recycled.

[0003] For example, authorization announcement number CN 214282254 U discloses a straw crushing device for agricultural machinery, comprising a device body, a base provided at the lower end of the device body, a bracket connected to the lower surface of the base, a crushing mechanism provided inside the device body, a pulley connected to the crushing mechanism, a motor fixedly mounted on the bracket, and a lifting structure provided on the device body, the lifting structure comprising a rubber pad, a fixing seat, a fastening plate, a rotating rod, a magnet, a rotating shaft, and a hand handle. The straw crushing device for agricultural machinery described in the present invention belongs to the field of agricultural machinery. The lifting structure is provided to facilitate the user to carry the crushing device, making it easier to carry. The hand handle is used to ensure comfort when transporting the device and improve the user experience. The hand handle is installed and fixed by a threaded connection and can be disassembled and replaced when needed. The structure is simple and the operation is flexible and convenient.

[0004] After the existing crushing device crushes the straw, the straw fragments become relatively fluffy, which affects the filling rate of the bag when the straw fragments are bagged; therefore, the market urgently needs to develop a straw crushing device for agricultural machinery to help people solve the existing problem. Summary of the Invention

[0005] The object of the present invention is to provide a straw crushing device for agricultural machinery to solve the problem that the existing crushing device mentioned in the background art makes the straw fragments fluffy after crushing the straw, which affects the filling rate of the bag when the straw fragments are bagged.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a straw crushing device for agricultural machinery, comprising a crushing bin, a crushing shaft rotatably connected to the middle part of the crushing bin, a plurality of crushing blades arranged in an array and fixedly connected to the crushing shaft, the lower end of the crushing bin is fixedly connected to a conveying bin, a conical extrusion bin is fixedly connected to one side of the conveying bin, the interior of the conveying bin is communicated with the interior of the conical extrusion bin, the middle part of the conveying bin and the middle part of the conical extrusion bin are jointly rotatably connected to a rotating shaft, the rotating shaft is fixedly provided with circular spiral blades inside the conveying bin, the rotating shaft is fixedly provided with conical spiral blades inside the conical extrusion bin, an air outlet is provided in the middle of the front end of the conveying bin, a blocking net is fixedly provided inside the air outlet, a dust removal box is connected to the outside of the air outlet, a fixed pipe is fixedly connected to the middle of the front end surface of the dust removal box, and a ring-shaped dust removal net is connected to the rear end of the fixed pipe.

[0007] Preferably, a feed port is provided at the front end of the crushing bin, a first driving device is fixedly provided at the middle of one end surface of the crushing bin, and a first motor is fixedly provided inside the first driving device.

[0008] Preferably, one end of the crushing shaft extends into the interior of the first driving device and is fixedly connected to the output shaft of the first motor.

[0009] Preferably, the interior of the crushing bin is communicated with the interior of the conveying bin, a second driving device is fixedly provided in the middle of the other side of the conveying bin, and a second motor is fixedly provided inside the second driving device.

[0010] Preferably, one end of the rotating shaft extends into the interior of the second driving device and is fixedly connected to the output shaft of the second motor.

[0011] Preferably, a discharge port is provided on one side of the conical extrusion bin, and a support ring is fixedly provided in the middle of the discharge port. The support ring is fixedly connected between the discharge port and the conical extrusion bin through a support rod, and the other end of the rotating shaft is inserted into the middle of the support ring.

[0012] Preferably, one side of the dust removal box is connected to the air outlet through a first suction pipe, an external threaded portion is fixedly provided on the outer end face of the fixed pipe, and the front end of the fixed pipe extends out of the front end face of the dust removal box and is fixedly connected to a suction device.

[0013] Preferably, the rear end of the annular dust removal net is fixedly connected to a circular sealing plate, the front end of the annular dust removal net is fixedly connected to an annular sealing plate, and the middle part of the front end of the annular sealing plate is fixedly connected to a connecting pipe.

[0014] Preferably, an internal threaded portion is fixedly provided on the inner wall of the connecting pipe, and the connecting pipe is inserted into the outside of the fixed pipe and is fixed by threaded connection between the external threaded portion and the internal threaded portion.

[0015] Preferably, an L-shaped back-blowing pipe is fixedly provided in the middle of the fixed pipe, the rear end of the L-shaped back-blowing pipe extends to the inside of the annular dust removal net, and the upper end of the L-shaped back-blowing pipe passes through the upper end surface of the fixed pipe and is fixedly connected to an air pump.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a conical extrusion chamber and conical spiral blades to continuously squeeze the straw chips during transport, achieving efficient compression and dense stacking. Compared to traditional devices, this structure significantly increases the bagging density of straw chips, allowing each bag to hold more material, effectively reducing storage space and transportation costs. Furthermore, the conical design allows for smooth flow of the chips, preventing blockage and ensuring maximum utilization of straw resources.

[0017] This invention introduces an innovative structure featuring a dust box and a removable annular dust screen. The dust box, located at the air outlet of the conveyor bin, effectively captures and collects dust and impurities generated during the crushing process. The annular dust screen efficiently filters fine particles, ensuring the cleanliness of the exhaust air. Furthermore, the removable design of the annular dust screen makes cleaning and maintenance extremely convenient, effectively extending the service life of the dust removal system, while also improving the working environment and protecting the health of operators.

[0018] This invention incorporates an L-shaped backflush pipe and an air pump. The L-shaped backflush pipe is located inside the annular dust removal net. Compressed air from the air pump provides regular backflush, effectively removing dust adhering to the net and preventing clogging. This design not only improves dust removal efficiency but also reduces the frequency of manual cleaning and lowers maintenance costs. Furthermore, the addition of an automatic dust cleaning system enhances the overall reliability and stability of the equipment, ensuring the continued efficient operation of the straw pulverizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a front view of a straw crushing device for agricultural machinery according to the present invention; Figure 2 It is a main cross-sectional view of the present invention; Figure 3 It is a side sectional view of the delivery bin of the present invention; Figure 4 It is an enlarged view of detail A of the present invention.

[0020] Figure 5 This is an enlarged view of detail B of the present invention In the figure: 1. Crushing bin; 101. Feeding port; 102. First driving device; 103. First motor; 2. Crushing shaft; 201. Crushing blade; 3. Conveying bin; 301. Second driving device; 302. Second motor; 303. Air outlet; 304. Barrier net; 4. Conical extrusion bin; 401. Discharge port; 5. Rotating shaft; 501. Circular spiral blade; 502. Conical spiral blade; 6. Support ring; 601. Support rod; 7. Dust removal box; 701. First suction pipe; 702. Fixed pipe; 703. External threaded part; 704. Suction device; 8. Annular dust removal net; 801. Circular sealing plate; 802. Annular sealing plate; 803. Connecting pipe; 804. Internal threaded part; 9. L-shaped backflush pipe; 901. Air pump. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0022] See also Figure 1-5 The present invention provides an embodiment: a straw crushing device for agricultural machinery, comprising a crushing bin 1, a crushing shaft 2 is rotatably connected to the middle part of the crushing bin 1, a plurality of crushing blades 201 are arranged in an array and fixedly connected to the crushing shaft 2, a feeding port 101 is provided at the front end of the crushing bin 1, a first driving device 102 is fixedly provided in the middle part of one end surface of the crushing bin 1, a first motor 103 is fixedly provided inside the first driving device 102, straw is added to the crushing bin 1 through the feeding port 101, one end of the crushing shaft 2 extends to the inside of the first driving device 102 and is fixedly connected to the output shaft of the first motor 103, the crushing shaft 2 is driven to rotate by the first motor 103, and then the crushing shaft 2 drives the crushing blades 201 to crush the straw added to the crushing bin 1.

[0023] See also Figure 1-4The lower end of the crushing bin 1 is fixedly connected to the conveying bin 3, the interior of the crushing bin 1 is communicated with the interior of the conveying bin 3, one side of the conveying bin 3 is fixedly connected to the conical extrusion bin 4, the interior of the conveying bin 3 is communicated with the interior of the conical extrusion bin 4, the middle of the conveying bin 3 and the middle of the conical extrusion bin 4 are connected to a rotating shaft 5 for rotation together, the rotating shaft 5 is fixedly provided with a circular spiral blade 501 inside the conveying bin 3, and the rotating shaft 5 is fixedly provided with a conical spiral blade 502 inside the conical extrusion bin 4. A second driving device 301 is fixedly provided in the middle of the other side of the conveying bin 3, and a second motor 302 is fixedly provided inside the second driving device 301. One end of the rotating shaft 5 extends to the interior of the second driving device 301 and is fixedly connected to the output shaft of the second motor 302. The crushed straw falls into the interior of the conveying bin 3, and the rotating shaft 5 is driven by the second motor 302 to rotate, so that the rotating shaft 5 drives the circular spiral blade 501 to The straw fragments are transported to the inside of the conical extrusion bin 4, and the rotation of the rotating shaft 5 simultaneously drives the conical spiral blade 502 to rotate, and the conical spiral blade 502 moves the straw fragments to the side of the circular spiral blade 501. While the straw fragments are moving, the volume of the straw fragments is gradually compressed by the conical inner wall of the conical extrusion bin 4, thereby achieving compression and compaction between the straw fragments, facilitating the subsequent bagging of the straw fragments and improving the utilization rate of the bag. A discharge port 401 is provided on one side of the conical extrusion bin 4, and a support ring 6 is fixedly provided in the middle of the discharge port 401. The support ring 6 is fixedly connected between the discharge port 401 and the conical extrusion bin 4 by a support rod 601. The other end of the rotating shaft 5 is inserted into the middle of the support ring 6, and the bag opening of the bag can be directly covered on the discharge port 401. The compressed straw fragments can be directly entered into the bag after being discharged from the discharge port 401, thereby improving the bagging efficiency.

[0024] See also Figure 2 and Figure 5, an air outlet 303 is provided in the middle of the front end of the conveying bin 3, a blocking net 304 is fixedly provided inside the air outlet 303, the outside of the air outlet 303 is connected to the dust collection box 7, the middle of the front end surface of the dust collection box 7 is fixedly connected to a fixed pipe 702, the rear end of the fixed pipe 702 is connected to the annular dust collection net 8, one side of the dust collection box 7 is connected to the air outlet 303 through a first suction pipe 701, an external threaded portion 703 is fixedly provided on the outer end surface of the fixed pipe 702, the front end of the fixed pipe 702 extends out of the front end surface of the dust collection box 7 and is fixedly connected to the suction device 704, the rear end of the annular dust collection net 8 is fixedly connected to a circular sealing plate 801, the front end of the annular dust collection net 8 is fixedly connected to an annular sealing plate 802, the middle of the front end of the annular sealing plate 802 is fixedly connected to a connecting pipe 803, an internal threaded portion 804 is fixedly provided on the inner wall of the connecting pipe 803, the connecting pipe 803 is inserted into the outside of the fixed pipe 702 and passes through the external threaded portion 703 and the internal threaded portion 804 The threaded connection is fixed. Since a large amount of dust will be generated after the straw is crushed, the air is sucked through the fixed pipe 702 by the suction device 704, so that the dust removal box 7 absorbs the dust inside the conveying bin 3 through the first suction pipe 701 and the air outlet 303. At the same time, the blocking net 304 is used to prevent the straw fragments from entering the first suction pipe 701. When the circular spiral blades 501 rotate, they will continuously scrape the straw fragments accumulated on the surface of the blocking net 304, so that the blocking net 304 remains in a ventilated state. The dust-laden gas enters the dust removal box 7 and passes through the annular dust removal net 8 and then enters the fixed pipe 702. The dust-laden gas is filtered by the annular dust removal net 8 and the filtered gas is discharged through the suction device 704, thereby realizing dust removal after the straw is crushed. By opening the box cover of the dust removal box 7 and rotating the annular dust removal net 8, the connecting pipe 803 is separated from the fixed pipe 702, and the annular dust removal net 8 and its attached components can be disassembled, which is convenient for maintenance and replacement of the annular dust removal net 8.

[0025] See also Figure 2 and Figure 5 An L-shaped back-blowing pipe 9 is fixedly arranged in the middle of the fixed pipe 702, and the rear end of the L-shaped back-blowing pipe 9 extends to the inside of the annular dust removal net 8. The upper end of the L-shaped back-blowing pipe 9 passes through the upper end surface of the fixed pipe 702 and is fixedly connected to an air pump 901. The air pump 901 is used to perform intermittent reverse blowing through the L-shaped back-blowing pipe 9 to the inside of the annular dust removal net 8, so that the dust accumulated on the outer surface of the annular dust removal net 8 is detached under the action of reverse blowing, thereby preventing the annular dust removal net 8 from being blocked.

[0026] Working Principle: To use the machine, the user first places the straw to be shredded into the shredding chamber 1 through the feed port 101. Next, the first motor 103 in the first drive unit 102 is activated. Once the first motor 103 is activated, its output shaft drives the shredding shaft 2, which is fixed to it, to begin rotating. As the shredding shaft 2 rotates, the array of shredding blades 201 arranged on it rotate at high speed, cutting and shredding the straw.

[0027] Under the influence of gravity, the pulverized straw fragments naturally fall into the conveying bin 3, which is connected to the bottom of the pulverizing bin 1. At this point, the user needs to activate the second motor 302 in the second drive device 301. Once the second motor 302 is activated, its output shaft drives the rotating shaft 5, to which it is fixed, to begin rotating. As the rotating shaft 5 rotates, the circular spiral blades 501 and the conical spiral blades 502 mounted thereon rotate synchronously.

[0028] As the circular spiral blades 501 rotate within the conveying chamber 3, they generate a pushing force toward the conical extrusion chamber 4, conveying the straw chips along the conveying chamber 3 toward the conical extrusion chamber 4. Simultaneously, as the conical spiral blades 502 rotate within the conical extrusion chamber 4, they generate a pushing force toward the discharge port 401. Due to the conical shape of the conical extrusion chamber 4, the straw chips are gradually compressed, reducing their volume and increasing their density. This ensures that the straw chips are already densely packed when they are conveyed to the discharge port 401, facilitating subsequent bagging operations and improving the utilization rate of the bagging system.

[0029] During the process of straw crushing and transportation, a large amount of dust and fine particles will be generated. In order to keep the working environment clean and protect the health of operators, the present invention is provided with a dust removal system. Specifically, the suction device 704 is connected to the air outlet 303 at the front end of the conveying bin 3 through the fixed pipe 702 and the first suction pipe 701. When the suction device 704 is started, it will extract the dust-laden air in the conveying bin 3 from the air outlet 303. When the dust-laden air passes through the air outlet 303, it will be blocked by the internal blocking net 304 to prevent larger particles such as straw fragments. When the circular spiral blades 501 rotate, they will continuously scrape the straw fragments accumulated on the surface of the blocking net 304, so that the blocking net 304 remains in a ventilated state, and the dust and fine particles will enter the dust removal box 7 together with the air.

[0030] Inside the dust box 7, dust-laden air passes through the annular dust screen 8. The annular dust screen 8 is highly efficient in filtering fine particles, removing dust and fine particles from the air while allowing clean air to pass through and be discharged. To extend the service life of the annular dust screen 8 and maintain its filtering effectiveness, the present invention also incorporates a detachable structure. Specifically, the annular dust screen 8 and its associated components can be quickly disassembled and replaced by rotating and disassembling the threaded connection between the connecting tube 803 and the fixed tube 702.

[0031] In addition, to prevent the annular dust removal net 8 from clogging during use, the present invention also provides a backflush system. Specifically, an air pump 901 is connected to the interior of the annular dust removal net 8 via an L-shaped backflush pipe 9. When dust on the annular dust removal net 8 needs to be cleaned, the air pump 901 can be started. The air pump 901 will blow compressed air into the interior of the annular dust removal net 8 through the L-shaped backflush pipe 9, generating a reverse airflow. This reverse airflow will blow off dust and fine particles on the outer surface of the annular dust removal net 8, thereby preventing it from clogging.

[0032] Finally, when the straw chips are compressed and delivered to the discharge port 401, the user can put the bag opening of the filling bag over the discharge port 401. At this point, the compressed straw chips will fall directly into the filling bag. Because the straw chips are tightly compressed, the filling rate of the filling bag is greatly improved, while also reducing storage space and transportation costs.

[0033] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A straw crushing device for agricultural machinery, comprising a crushing chamber (1), characterized in that: The middle of the crushing bin (1) is rotatably connected to a crushing shaft (2), and a plurality of crushing blades (201) are arranged in an array and fixedly connected on the crushing shaft (2). The lower end of the crushing bin (1) is fixedly connected to a conveying bin (3), and one side of the conveying bin (3) is fixedly connected to a conical extrusion bin (4). The interior of the conveying bin (3) is communicated with the interior of the conical extrusion bin (4). The middle of the conveying bin (3) and the middle of the conical extrusion bin (4) are rotatably connected to a rotating shaft (5). The rotating shaft (5) is located inside the conveying bin (3). A circular spiral blade (501) is fixedly provided on the top of the conveying bin (3); a conical spiral blade (502) is fixedly provided on the rotating shaft (5) inside the conical extrusion bin (4); an air outlet (303) is provided at the middle of the front end of the conveying bin (3); a blocking net (304) is fixedly provided inside the air outlet (303); a dust removal box (7) is connected to the outside of the air outlet (303); a fixed pipe (702) is fixedly connected to the middle of the front end surface of the dust removal box (7); and a ring-shaped dust removal net (8) is connected to the rear end of the fixed pipe (702).

2. The straw crushing device for agricultural machinery according to claim 1, characterized in that: A feed port (101) is provided at the front end of the crushing bin (1), a first drive device (102) is fixedly provided at the middle of one end surface of the crushing bin (1), and a first motor (103) is fixedly provided inside the first drive device (102).

3. The straw crushing device for agricultural machinery according to claim 2, characterized in that: One end of the crushing shaft (2) extends into the interior of the first driving device (102) and is fixedly connected to the output shaft of the first motor (103).

4. The straw crushing device for agricultural machinery according to claim 1, characterized in that: The interior of the crushing bin (1) is communicated with the interior of the conveying bin (3); a second driving device (301) is fixedly provided in the middle of the other side of the conveying bin (3); and a second motor (302) is fixedly provided in the interior of the second driving device (301).

5. The straw crushing device for agricultural machinery according to claim 1, characterized in that: One end of the rotating shaft (5) extends into the interior of the second driving device (301) and is fixedly connected to the output shaft of the second motor (302).

6. The straw crushing device for agricultural machinery according to claim 1, characterized in that: A discharge port (401) is provided on one side of the conical extrusion bin (4), and a support ring (6) is fixedly provided in the middle of the discharge port (401). The support ring (6) is fixedly connected to the conical extrusion bin (4) inside the discharge port (401) via a support rod (601), and the other end of the rotating shaft (5) is inserted into the middle of the support ring (6).

7. The straw crushing device for agricultural machinery according to claim 1, characterized in that: One side of the dust removal box (7) is connected to the air outlet (303) via a first suction pipe (701); an external threaded portion (703) is fixedly provided on the outer end surface of the fixed pipe (702); and a front end of the fixed pipe (702) extends out of the front end surface of the dust removal box (7) and is fixedly connected to a suction device (704).

8. The straw crushing device for agricultural machinery according to claim 7, characterized in that: The rear end of the annular dust removal net (8) is fixedly connected to a circular sealing plate (801), the front end of the annular dust removal net (8) is fixedly connected to an annular sealing plate (802), and the middle part of the front end of the annular sealing plate (802) is fixedly connected to a connecting pipe (803).

9. The straw crushing device for agricultural machinery according to claim 8, characterized in that: An internal threaded portion (804) is fixedly provided on the inner wall of the connecting tube (803), and the connecting tube (803) is inserted into the outside of the fixed tube (702) and is threadedly connected and fixed with the internal threaded portion (804) through the external threaded portion (703).

10. The straw pulverizing device for agricultural machinery according to claim 9, characterized in that: An L-shaped backflush pipe (9) is fixedly provided in the middle of the fixed pipe (702), the rear end of the L-shaped backflush pipe (9) extends into the interior of the annular dust removal net (8), and the upper end of the L-shaped backflush pipe (9) passes through the upper end surface of the fixed pipe (702) and is fixedly connected to an air pump (901).

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