Scrap screening device for straw returning to field

Abstract

The utility model relates to the technical field of straw returning, and discloses a scrap screening device for straw returning, which comprises a box body, a screening mechanism is arranged in the box body, and rebounding mechanisms are arranged on the left side and the right side of the box body. Through the screening mechanism, straw chippings are poured into a box body through a feeding cylinder, the straw chippings can fall on a screening plate, a motor is started, a cross block rotates through work of the motor, the cross block can hit a protruding block on the back face of the screening plate in the rotating process, and therefore the screening plate moves; straw chippings on the top of a screening plate can be screened through movement of the screening plate, screened straw can be discharged from a first discharging port through the screening plate, unqualified straw after screening can be discharged from a second discharging port, and through a rebound mechanism, when gaps of a cross run away from protruding blocks, the screening plate can move backwards due to the elastic force of springs, so that the straw chippings can be separated from the protruding blocks through the springs. And the operation is repeated to drive the screening plate to move front and back, so that the straw chippings are screened.

Description

Technical Field

[0001] The utility model relates to the technical field of returning straw to the field, in particular to a debris screening device for returning straw to the field. Background Art

[0002] Straw return to the field refers to a method of applying straw (such as wheat straw, corn straw and rice straw) that is not suitable for direct feed directly to the soil directly or after it has been piled up and decomposed3. In the process of agricultural production, crops need to continuously consume energy during their growth, and also need to continuously replenish energy and continuously adjust the content of water, fertilizer, gas and heat in the soil. Straw contains a large amount of fresh organic materials. After being returned to the farmland, it can be converted into organic matter and fast-acting nutrients after a period of decomposition3. This can not only improve the physical and chemical properties of the soil, but also supply certain nutrients such as potassium, thereby promoting agricultural water conservation, cost saving, increased production and increased efficiency, and should also be given full attention in environmental protection and sustainable agricultural development.

[0003] According to patent CN 215122297 U, a straw crushing device for returning straw to the field comprises a feed box, an electric push rod is arranged at the middle position of the top of the feed box, the movable end of the electric push rod is connected to a supporting plate, a knife plate is movably arranged at the bottom of the supporting plate, a conveying platform is arranged at the lower end of the inner cavity of the feed box, a crushing box is arranged at the right side of the bottom of the feed box, a baffle is arranged at the top of the crushing box, a hydraulic push rod is arranged at the upper end of the right outer wall of the crushing box, a movable plate is arranged at the movable end of the hydraulic push rod, the left end of the movable plate is connected to a push rod, a slide plate is arranged on the outer wall of the push rod, and a sealing plate is arranged on the right outer wall of the movable plate.

[0004] The cut straw in this patent is more convenient to crush, which improves the efficiency of crushing. The straw is dried before crushing and is indirectly put into the machine so that the straw will not be wrapped around the outer wall of the crushing wheel after crushing. However, this patent can only crush the straw but does not screen the crushed straw, which will result in straws of large sizes, making it inconvenient to return to the field. Utility Model Content

[0005] The utility model aims to provide a debris screening device for returning straw to the field, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a debris screening device for returning straw to the field, comprising a box body, a feed cylinder is fixedly connected to the top of the box body, a first discharge port is opened at the bottom of the box body, a second discharge cylinder is opened at the front of the box body, a screening mechanism is arranged in the box body, and a rebound mechanism is arranged on the left and right sides of the box body;

[0007] The screening mechanism comprises a moving component and a striking component. The moving component is arranged on the left and right sides of the box body, and the striking component is arranged on the back side of the box body.

[0008] Preferably, the movable component includes a slide groove, which is symmetrically opened on the left and right sides of the box body, and a connecting block is slidably connected in the slide groove. The connecting block is fixedly connected to a screening plate on one side of the inner wall of the box body, and the top and bottom of the connecting block are symmetrically fixedly connected to limit blocks.

[0009] Preferably, the front end of the screening plate extends into the second discharge port, and the limiting block is in contact with the inner wall of the box body on one side close to the inner wall of the box body, and the limiting block prevents the screening plate from moving left and right.

[0010] Preferably, the striking assembly includes a fixed block, which is fixedly connected to the back of the box, a motor is fixedly connected to the back of the fixed block, a cross block is fixedly connected to the output end of the motor, a rectangular groove is opened on the back of the box for the cross block, and a protrusion is fixedly connected to the back of the screening plate.

[0011] Preferably, the width of the rectangular groove is greater than the height of the cross block, so that the cross block can be easily moved through the rectangular groove.

[0012] Preferably, the rebound mechanism includes a connecting hole, which is opened on the right side of the front side of the connecting block. A connecting rod is slidably connected in the connecting hole. The rear end of the connecting rod is fixedly connected to a first L-plate, and the rear end of the connecting rod is fixedly connected to a second L-plate. A spring is sleeved on the surface of the connecting rod between the second L-plate and the connecting block.

[0013] Preferably, the left end of the first L-plate is fixedly connected to the right side of the box, the left end of the second L-plate is fixedly connected to the right side of the box, one end of the spring is fixedly connected to the back side of the second L-plate, and the other end of the spring is fixedly connected to the front side of the connecting block, and there are two groups of rebound mechanisms, which are symmetrically arranged on the left and right sides of the box.

[0014] Compared with the prior art, the utility model provides a debris screening device for returning straw to the field, which has the following beneficial effects:

[0015] The debris screening device for returning straw to the field uses a screening mechanism to pour straw debris into a box body through a feed tube, and the straw debris will fall on a screening plate. The motor is started, and the cross block is rotated through the work of the motor. The cross block hits the protrusions on the back of the screening plate during the rotation, so that the screening plate moves. The movement of the screening plate will screen the straw debris on the top of it, and the screened straw will be discharged from the first discharge port through the screening plate, and unqualified straw will be discharged from the second discharge port after screening.

[0016] The debris screening device for returning straw to the field has a rebound mechanism, and the screening plate is subjected to spring force during the process of moving forward. When the gap of the cross moves away from the protrusion, the screening plate will move backward due to the elastic force of the spring. This repeated movement will drive the screening plate to move forward and backward to screen the straw debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0018] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the first discharge port of the utility model structure;

[0020] Figure 3 This is a planed view of the top right side of the structural box of the utility model;

[0021] Figure 4 This is a schematic diagram of the structural screening plate of the utility model;

[0022] Figure 5 This is a schematic diagram of the striking component of the utility model structure;

[0023] Figure 6 This is a schematic diagram of the structural connection holes of the utility model;

[0024] Figure 7 It is a schematic diagram of the structural rebound mechanism of the utility model.

[0025] In the figure: 1. box body; 2. feed barrel; 3. first discharge port; 4. second discharge port; 5. screening mechanism; 51. moving assembly; 511. slide slot; 512. connecting block; 513. screening plate; 514. limit block; 52. striking assembly; 521. fixing block; 522. motor; 523. cross block; 524. rectangular groove; 525. protrusion; 6. rebound mechanism; 61. connecting hole; 62. connecting rod; 63. first L plate; 64. second L plate; 65. spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] The utility model provides the following technical solutions:

[0029] For example, see Figure 1-5 A debris screening device for returning straw to the field comprises a box body 1, a feeding cylinder 2 is fixedly connected to the top of the box body 1, a first discharge port 3 is provided at the bottom of the box body 1, a second discharge cylinder is provided at the front of the box body 1, a screening mechanism 5 is provided in the box body 1, and a rebound mechanism 6 is provided on the left and right sides of the box body 1;

[0030] The screening mechanism 5 includes a moving assembly 51 and a striking assembly 52 . The moving assembly 51 is arranged on the left and right sides of the box body 1 , and the striking assembly 52 is arranged on the back side of the box body 1 .

[0031] The moving component 51 includes a slide groove 511, which is symmetrically opened on the left and right sides of the box body 1. A connecting block 512 is slidably connected in the slide groove 511. The connecting block 512 is fixedly connected to a screening plate 513 on one side of the inner wall of the box body 1. The top and bottom of the connecting block 512 are symmetrically fixedly connected to a limiting block 514.

[0032] The front end of the screening plate 513 extends into the second discharge port 4, and the limiting block 514 is in contact with the inner wall of the box body 1 on one side thereof, so that the limiting block 514 prevents the screening plate 513 from moving left and right.

[0033] The striking assembly 52 includes a fixed block 521, which is fixedly connected to the back of the box body 1. A motor 522 is fixedly connected to the back of the fixed block 521. A cross block 523 is fixedly connected to the output end of the motor 522. A rectangular groove 524 is opened on the back of the box body 1 facing the cross block 523. A protrusion 525 is fixedly connected to the back of the screening plate 513.

[0034] The width of the rectangular groove 524 is greater than the height of the cross block 523 , so that the cross block 523 can easily move through the rectangular groove 524 .

[0035] For example 2, please refer to Figure 6-7 , and on the basis of the first embodiment, a rebound mechanism 6 is further obtained.

[0036] The rebound mechanism 6 includes a connecting hole 61, which is opened on the right side of the front side of the connecting block 512. A connecting rod 62 is slidably connected in the connecting hole 61. A first L-plate 63 is fixedly connected to the rear end of the connecting rod 62. A second L-plate 64 is fixedly connected to the rear end of the connecting rod 62. A spring 65 is sleeved on the surface of the connecting rod 62 between the second L-plate 64 and the connecting block 512.

[0037] The left end of the first L-plate 63 is fixedly connected to the right side of the box body 1, the left side of the second L-plate 64 is fixedly connected to the right side of the box body 1, one end of the spring 65 is fixedly connected to the back side of the second L-plate 64, and the other end of the spring 65 is fixedly connected to the front side of the connecting block 512. There are two groups of rebound mechanisms 6, which are symmetrically arranged on the left and right sides of the box body 1.

[0038] In actual operation, when this device is used, straw debris is poured into the box body 1 through the feed tube 2, and the straw debris will fall on the screening plate 513, and the motor 522 is started. The motor 522 works to rotate the cross block 523, and the cross block 523 will hit the protrusion 525 on the back of the screening plate 513 during the rotation, so that the screening plate 513 moves. The movement of the screening plate 513 will screen the straw debris on the top, and the screened straw will be discharged from the first discharge port 3 through the screening plate 513, and the unqualified straw after screening will be discharged from the second discharge port 4. The screening plate 513 is subjected to the elastic force of the spring 65 during the forward movement. When the gap of the cross drives away from the protrusion 525, the screening plate 513 will move backward due to the elastic force of the spring 65, and this will drive the screening plate 513 to move back and forth repeatedly to screen the straw debris.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A debris screening device for returning straw to the field, comprising a housing (1), characterized in that: A feed cylinder (2) is fixedly connected to the top of the box (1), a first discharge port (3) is provided at the bottom of the box (1), a second discharge cylinder is provided at the front of the box (1), a screening mechanism (5) is provided inside the box (1), and rebound mechanisms (6) are provided on the left and right sides of the box (1); The screening mechanism (5) comprises a moving component (51) and a striking component (52); the moving component (51) is arranged on the left and right sides of the box body (1), and the striking component (52) is arranged on the back side of the box body (1).

2. A debris screening device for returning straw to the field according to claim 1, characterized in that: The moving assembly (51) comprises a slide groove (511) which is symmetrically opened on the left and right sides of the box body (1); a connecting block (512) is slidably connected in the slide groove (511); a screening plate (513) is fixedly connected to one side of the inner wall of the box body (1); and a limiting block (514) is symmetrically fixedly connected to the top and bottom of the connecting block (512).

3. A debris screening device for returning straw to the field according to claim 2, characterized in that: The front end of the screening plate (513) extends into the second discharge port (4), and the side of the limiting block (514) close to the inner wall of the box body (1) is in contact with the inner wall of the box body (1).

4. The debris screening device for returning straw to the field according to claim 1 is characterized in that: The striking assembly (52) comprises a fixing block (521), the fixing block (521) being fixedly connected to the back of the box body (1), a motor (522) being fixedly connected to the back of the fixing block (521), a cross block (523) being fixedly connected to the output end of the motor (522), a rectangular groove (524) being provided on the back of the box body (1) facing the cross block (523), and a protrusion (525) being fixedly connected to the back of the screening plate (513).

5. The debris screening device for returning straw to the field according to claim 4 is characterized in that: The width of the rectangular groove (524) is greater than the height of the cross block (523).

6. The debris screening device for returning straw to the field according to claim 1, characterized in that: The rebound mechanism (6) comprises a connecting hole (61), the connecting hole (61) being opened on the right side of the front face of the connecting block (512), a connecting rod (62) being slidably connected in the connecting hole (61), a first L-plate (63) being fixedly connected at the rear end of the connecting rod (62), a second L-plate (64) being fixedly connected at the rear end of the connecting rod (62), and a spring (65) being sleeved on the surface of the connecting rod (62) between the second L-plate (64) and the connecting block (512).

7. A debris screening device for returning straw to the field according to claim 6, characterized in that: The left end of the first L-plate (63) is fixedly connected to the right side of the box body (1), the left end of the second L-plate (64) is fixedly connected to the right side of the box body (1), one end of the spring (65) is fixedly connected to the back side of the second L-plate (64), and the other end of the spring (65) is fixedly connected to the front side of the connecting block (512), and the rebound mechanism (6) has two groups, which are symmetrically arranged on the left and right sides of the box body (1).

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