Two-stage multi-dimensional vibrating screen mechanism and plough layer residual film recycling machine provided with same

Abstract

The invention provides a two-stage multi-dimensional vibrating screen mechanism and a plough layer residual film recycling machine provided with the same. The two-stage multi-dimensional vibrating screen mechanism comprises a first-stage screening mechanism, a first-stage shaking mechanism, a second-stage shaking mechanism and a second-stage screening mechanism. The first-stage shaking mechanism drives the first-stage screening mechanism to generate first vibration; the second-stage shaking mechanism drives the second-stage screening mechanism to generate second vibration; the frequency of the first vibration is higher than that of the second vibration and the amplitude of the first vibration is smaller than that of the second vibration. The first-stage screening mechanism rapidly conveys a soil and film mixture and screens part of fine soil, the second-stage screening mechanism receives materials obtained after first-stage screening for secondary screening, and soil and residual films are further separated. The first-stage shaking mechanism provides high-frequency low-amplitude vibration, so that soil jumps on the screen surface and moves forwards. The second-stage shaking mechanism provides low-frequency high-amplitude vibration to drive materials on the screen face to roll over, it is ensured that residual films are fully exposed and screened and separated, separation and conveying of soil blocks and the residual films are achieved, the soil hilling phenomenon is reduced, and the soil screening efficiency and the residual film recovery rate are improved.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery technology, specifically relating to a two-stage multi-dimensional vibrating screen mechanism and a tillage residue film recycling machine that installs the mechanism. Background Technology

[0002] Xinjiang is the province with the highest usage and largest coverage area of ​​plastic film mulching in China. Mulching can increase soil temperature and moisture retention, suppress pests and weeds, and improve crop yield. However, plastic film has low strength, poor weather resistance, is easily broken after use, and is buried at uneven depths, making it difficult for recycling machinery to completely remove it. These plastic films, which require a long time to degrade on their own, accumulate in the soil, significantly hindering crop growth and causing serious "white pollution." Residual film recycling has become a major challenge for the development of mulched agriculture.

[0003] In the recycling of residual film (mainly focusing on the collection of film visible on the ground), surface film is subject to mandatory recycling due to policy, minimal surface damage, and low recycling difficulty, and the technology and equipment are already mature and widely adopted. However, in the recycling of residual film in the topsoil (referring to film buried in the topsoil), the film is mixed with soil, crop residues, and clods, making separation difficult, especially in heavy clay soil areas like southern Xinjiang, where the soil's strong adhesion makes it easier for soil to form clumps on the screen surface, further hindering film-soil separation. This leads to increased mechanical resistance, decreased screening efficiency, and even blockages and shutdowns.

[0004] Existing full-feed type soil film residue recycling machines mostly use simple single-stage vibrating screens with a single vibration mode and fixed motion trajectory. They have poor adaptability to complex materials and the film-soil separation effect is not significant. At the same time, the residual film remains in the soil for a long time and is highly broken. Its size, shape and strength and other mechanical properties vary significantly, which further reduces the compatibility with the screening mechanism.

[0005] Therefore, developing a vibrating screen mechanism that can adapt to cohesive soil, effectively prevent soil clogging, and achieve efficient film-soil separation has become an urgent technical problem to be solved in order to improve the recycling effect of residual film in the topsoil. Summary of the Invention

[0006] To address the aforementioned technical problems, one objective of this invention is to provide a two-dimensional multi-dimensional vibrating screen mechanism that can achieve complex multi-dimensional vibration of the screen surface, effectively solving the problems of severe soil accumulation, high frictional resistance, and low membrane-soil separation efficiency in existing soil-residual film recycling machines.

[0007] Another objective of this invention is to provide a soil film recycling machine for the tillage layer, which includes the aforementioned two-dimensional multi-dimensional vibrating screen mechanism and the mechanism, effectively reducing frictional resistance, preventing soil clogging, and increasing the screening rate. This reduces soil clogging on the screen, improves the efficiency of soil screening, and reduces resistance during soil film recycling, thereby increasing the soil film recycling rate.

[0008] The present invention achieves the above-mentioned technical objectives through the following technical means.

[0009] A two-stage multi-dimensional vibrating screen mechanism includes a primary screening mechanism, a primary shaking mechanism, a secondary shaking mechanism, and a secondary screening mechanism; The starting end of the secondary screening mechanism is located downstream of the end of the primary screening mechanism; The first-stage shaking mechanism acts on the first-stage screening mechanism to drive the first-stage screening mechanism to generate a first vibration; the second-stage shaking mechanism acts on the second-stage screening mechanism to drive the second-stage screening mechanism to generate a second vibration; wherein, the frequency of the first vibration is higher than that of the second vibration, and the amplitude of the first vibration is smaller than that of the second vibration.

[0010] The above scheme also includes a right side plate, bracket I, a left side plate, bracket II, and bracket III; The right side plate and the left side plate are arranged opposite to each other and are fixed together by bracket I, bracket II and bracket III; wherein, along the material conveying direction of the primary screening mechanism, bracket I is located upstream between the right side plate and the left side plate, bracket II and bracket III are located downstream, and bracket II is located upstream of bracket III. The primary screening mechanism, secondary screening mechanism, primary shaking mechanism, and secondary shaking mechanism are all installed between the right side plate and the left side plate.

[0011] In the above scheme, both the primary screening mechanism and the secondary screening mechanism include a ring-shaped rubber belt and multiple rubber rods spaced apart on the rubber belt; the surface of the rubber rods is provided with several integrally formed protrusions, and the protrusions are stepped cylindrical structures.

[0012] In the above scheme, the installation angle of the primary screening mechanism is greater than that of the secondary screening mechanism.

[0013] The above solution also includes a transmission mechanism; the transmission mechanism is installed between the right side plate and the left side plate; The transmission mechanism is connected to the primary screening mechanism, the secondary screening mechanism, the primary shaking mechanism, and the secondary shaking mechanism respectively, and is used to provide power to the primary screening mechanism, the secondary screening mechanism, the primary shaking mechanism, and the secondary shaking mechanism.

[0014] Furthermore, the transmission mechanism drives the first-stage vibration mechanism and the second-stage vibration mechanism through a chain drive system, which is configured such that the operating speed of the first-stage vibration mechanism is higher than that of the second-stage vibration mechanism.

[0015] In the above scheme, both the primary jitter mechanism and the secondary jitter mechanism include at least one jitter unit; The shaking unit includes a rotatable shaking wheel shaft and at least one vibration mechanism; the vibration mechanism includes a clamping wheel fixed to the shaking wheel shaft, a triangular plate connected to the clamping wheel, and a rubber wheel installed at the corner of the triangular plate; The triangular plate has an elliptical mounting hole at its corner that allows the installation position of the rubber wheel to be adjusted; by changing the fixed position of the rubber wheel in the elliptical mounting hole, the effective radius of action of the rubber wheel can be adjusted, thereby changing the vibration amplitude of the corresponding screening mechanism.

[0016] Furthermore, the primary shaking mechanism includes multiple shaking units arranged along the length direction of the primary screening mechanism, and the secondary shaking mechanism includes multiple shaking units arranged along the length direction of the secondary screening mechanism.

[0017] Furthermore, the primary shaking mechanism includes three shaking units arranged along the length direction of the primary screening mechanism, and the secondary shaking mechanism includes three shaking units arranged along the length direction of the secondary screening mechanism. The primary vibration mechanism includes three vibration wheel shafts with the same rotation speed: primary vibration wheel shaft I, primary vibration wheel shaft II, and primary vibration wheel shaft III. At least one vibration mechanism is installed on each of the primary vibration wheel shafts I, II, and III. The secondary vibration mechanism includes three secondary vibration wheel shafts, namely I, II, and III, which rotate at the same speed, and each shaft is equipped with at least one vibration mechanism.

[0018] A soil film recycling machine includes the aforementioned two-stage multi-dimensional vibrating screen mechanism.

[0019] The primary and secondary screening mechanisms of this invention are driven by the rotation of the main shaft of the vibrating wheel, which in turn drives the rotation of the vibrating wheel to make the primary and secondary screening mechanisms float up and down. The primary and secondary vibrating mechanisms can reduce the frictional resistance between the primary and secondary screening mechanisms and the soil, thus achieving a better membrane-soil separation effect.

[0020] This invention features a primary screening mechanism for rapidly conveying the soil-film mixture and screening out finely crushed soil. A secondary screening mechanism receives the material after primary screening and performs a second screening to further separate the soil and residual film. The primary shaking mechanism provides high-frequency, low-amplitude vibration, causing the soil to jump and move forward on the screen surface. The secondary shaking mechanism provides low-frequency, high-amplitude vibration, causing the material on the screen surface to tumble, ensuring that the residual film is fully exposed and separated. This invention solves the problems of severe soil accumulation, high frictional resistance, and low separation efficiency in existing soil-film separation machines. By combining the primary and secondary screening mechanisms and using different shaking mechanisms, it achieves rapid and effective separation and conveying of soil clods and residual film, reducing soil accumulation and effectively improving the efficiency of soil screening and residual film recovery.

[0021] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention combines a two-stage screening mechanism with a shaking mechanism that has different vibration characteristics, namely high frequency and low amplitude and low frequency and high amplitude. This can effectively reduce the frictional resistance between the screen surface and the material, prevent the clogging of sticky soil, and significantly improve the soil's screening rate, thereby reducing the resistance during residual film recovery and improving the residual film recovery rate and reliability.

[0022] 2. The shaking mechanism of this invention drives the rubber wheel to periodically act on the screening mechanism through the rotating shaking wheel shaft, causing it to float vertically, reducing the frictional resistance between the screening mechanism and the soil, and achieving a better membrane-soil separation effect.

[0023] 3. The two-dimensional multi-dimensional vibrating screen mechanism of the present invention adopts a chain transmission system in which the primary screen drive shaft synchronously drives the secondary screen drive shaft and multiple vibrating wheel shafts, realizing multi-dimensional composite vibration of the screen surface in longitudinal conveying and vertical floating. Compared with the single-shaft drive method, it has better loosening effect and anti-clogging effect. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of a two-dimensional multi-dimensional vibrating screen mechanism according to an embodiment of the present invention.

[0025] Figure 2 This is a right view of a two-dimensional multi-dimensional vibrating screen mechanism according to an embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the overall structure of a primary screening mechanism according to an embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the primary screening mechanism and the secondary screening mechanism according to one embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of a primary screening mechanism and a primary shaking mechanism according to an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the first-stage shaking mechanism according to one embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of a soil tilting vibration conveying method according to an embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of soil horizontal vibration according to one embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram of the transmission mechanism structure according to one embodiment of the present invention.

[0033] Figure 10 This is a schematic diagram of a two-stage shaking mechanism according to an embodiment of the present invention.

[0034] Figure 11 This is a schematic diagram of the triangular plate, clamping wheel, and rubber wheel structure according to one embodiment of the present invention.

[0035] Figure 12 This is a schematic diagram of a tensioning mechanism according to an embodiment of the present invention.

[0036] Figure 13 This is a schematic diagram of the support and side plate structure according to one embodiment of the present invention.

[0037] In the diagram: 1-First-stage screening mechanism, 2-Right side plate, 3-First-stage vibrating mechanism, 4-Support I, 5-Transmission mechanism, 6-Left side plate, 7-Second-stage vibrating mechanism, 8-Second-stage screening mechanism, 9-Tensioning mechanism, 10-Support II, 11-Support III, 101-First-stage screen drive shaft, 102-First-stage drive wheel, 103-Rubber belt, 104-Rubber rod, 105-First-stage driven wheel, 301-First-stage vibrating wheel shaft III, 302-First-stage vibrating wheel shaft II, 303-First-stage vibrating wheel shaft I, 304-Rubber belt Rubber wheel, 305-triangular plate, 306-clamping wheel, 501-reducer, 502-right output shaft of reducer, 503-reducer bracket I, 504-reducer bracket II, 505-left output shaft of reducer, 701-secondary vibrating wheel shaft III, 702-secondary vibrating wheel shaft II, 703-secondary vibrating wheel shaft I, 801-secondary screen drive shaft, 802-secondary drive wheel, 803-secondary driven wheel, 901-tensioning sprocket, 902-angular contact ball bearing with dust cover, 903-tensioning bracket. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "front," "rear," "left," "right," "upper," "lower," "axial," "radial," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and 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 a limitation of the invention. 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 indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., 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 connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] like Figure 1-2 As shown, this is a preferred embodiment of the two-dimensional multi-dimensional vibrating screen mechanism of the present invention. The two-dimensional multi-dimensional vibrating screen mechanism includes a primary screening mechanism 1, a primary shaking mechanism 3, a secondary shaking mechanism 7, and a secondary screening mechanism 8. The starting end of the secondary screening mechanism 8 is located downstream of the end of the primary screening mechanism 1; The first-stage shaking mechanism 3 acts on the first-stage screening mechanism 1 to drive the first-stage screening mechanism 1 to generate a first vibration; the second-stage shaking mechanism 7 acts on the second-stage screening mechanism 8 to drive the second-stage screening mechanism 8 to generate a second vibration; wherein, the frequency of the first vibration is higher than that of the second vibration, and the amplitude of the first vibration is smaller than that of the second vibration.

[0042] In one specific embodiment of the present invention, the secondary multidimensional vibrating screen mechanism further includes a right side plate 2, a support I 4, a left side plate 6, a support II 10, and a support III 11; the right side plate 2 and the left side plate 6 are arranged opposite to each other and are fixed together by the support I 4, the support II 10, and the support III 11; wherein, along the material conveying direction of the primary screening mechanism 1, the support I 4 is located upstream between the right side plate 2 and the left side plate 6, the support II 10 and the support III 11 are located downstream, and the support II 10 is located upstream of the support III 11; the primary screening mechanism 1, the secondary screening mechanism 8, the primary shaking mechanism 3, and the secondary shaking mechanism 7 are all installed between the right side plate 2 and the left side plate 6.

[0043] Both the primary screening mechanism 1 and the secondary screening mechanism 8 include a ring-shaped rubber belt 103 and a plurality of rubber rods 104 spaced apart on the rubber belt 103; the surface of the rubber rods 104 is provided with a plurality of integrally formed protrusions, the protrusions being a stepped cylindrical structure.

[0044] The installation angle of the primary screening mechanism 1 is greater than that of the secondary screening mechanism 8. Preferably, the installation angle of the primary screening mechanism 1 is 5°-15° greater than that of the secondary screening mechanism 8.

[0045] The aforementioned two-dimensional multi-dimensional vibrating screen mechanism further includes a transmission mechanism 5; the transmission mechanism 5 is installed between the right side plate 2 and the left side plate 6. The transmission mechanism 5 is connected to the primary screening mechanism 1, the secondary screening mechanism 8, the primary shaking mechanism 3, and the secondary shaking mechanism 7 respectively, and is used to provide power to the primary screening mechanism 1, the secondary screening mechanism 8, the primary shaking mechanism 3, and the secondary shaking mechanism 7.

[0046] The transmission mechanism 5 drives the first-stage vibration mechanism 3 and the second-stage vibration mechanism 7 through a chain transmission system. The chain transmission system is configured such that the operating speed of the first-stage vibration mechanism 3 is higher than the operating speed of the second-stage vibration mechanism 7.

[0047] Both the primary jitter mechanism 3 and the secondary jitter mechanism 7 include at least one jitter unit; The shaking unit includes a rotatable shaking wheel shaft and at least one vibration mechanism; the vibration mechanism includes a clamping wheel 306 fixed on the shaking wheel shaft, a triangular plate 305 connected to the clamping wheel 306, and a rubber wheel 304 installed at the corner of the triangular plate 305. The corner of the triangular plate 305 is provided with an elliptical mounting hole that allows the installation position of the rubber wheel 304 to be adjusted; by changing the fixed position of the rubber wheel 304 in the elliptical mounting hole, the effective radius of action of the rubber wheel 304 can be adjusted, thereby changing the vibration amplitude of the corresponding screening mechanism.

[0048] The primary shaking mechanism 3 includes multiple shaking units arranged along the length of the primary screening mechanism 1, and the secondary shaking mechanism 7 includes multiple shaking units arranged along the length of the secondary screening mechanism 8.

[0049] In one specific embodiment of the present invention, the secondary multidimensional vibrating screen mechanism includes a primary screening mechanism 1, a right side plate 2, a primary shaking mechanism 3, a support I 4, a transmission mechanism 5, a left side plate 6, a secondary shaking mechanism 7, a secondary screening mechanism 8, a tensioning mechanism 9, a support II 10, and a support III 11.

[0050] The primary screening mechanism 1 is used for rapidly conveying the soil-film mixture and screening the finely crushed soil. The right side plate 2 and the left side plate 6 together form the main frame of the mechanism, used to support and install various screening, vibrating, and transmission components. The primary vibration mechanism 3 is used to excite the primary screening mechanism 1 to vibrate in a specific direction and amplitude to enhance the screening effect. The brackets I4, II10, and III11 form a triangular shape to support and fix the right side plate 2 and the left side plate 6, increasing the stability of the entire mechanism and jointly ensuring the structural stability of the vibrating screen in the working state. The transmission mechanism 5 is used to transmit power to the primary screening mechanism 1, the secondary screening mechanism 8, the primary vibration mechanism 3, and the secondary vibration mechanism. The secondary vibration mechanism 7 is used to drive the secondary screening mechanism 8 to vibrate, with a frequency lower than that of the primary vibration mechanism 3 and a higher amplitude than that of the primary vibration mechanism 3, to deeply tumble and separate the material, thereby achieving finer screening. The secondary screening mechanism 8 has a smaller inclination angle and a smaller conveying speed than the primary screening mechanism 1. It is used to receive the mixture from the primary screening mechanism 1 and perform secondary screening to further separate the soil and residual film. The tensioning mechanism 9 is used to tension the chain between the right output shaft 502 of the reducer and the primary screen drive shaft 101.

[0051] like Figure 1 and Figure 2 As shown, the primary screening mechanism 1, the secondary screening mechanism 8, the primary shaking mechanism 3, the secondary shaking mechanism 7, the tensioning mechanism 9, and the transmission mechanism 5 are all installed on the right side plate 2 and the left side plate 6, and the right side plate 2 and the left side plate 6 are fixed together by bracket I 4, bracket II 10 and bracket III 11. The inclination angle of the primary screening mechanism 1 is higher than that of the secondary screening mechanism 8. The starting end of the secondary screening mechanism 8 is installed below the end space of the primary screening mechanism 1. The primary shaking mechanism 3 is installed inside the primary screening mechanism 1, and the secondary shaking mechanism 7 is installed inside the secondary screening mechanism 8. In one specific embodiment of the present invention, the primary shaking mechanism 3 includes three shaking units arranged along the length direction of the primary screening mechanism 1, and the secondary shaking mechanism 7 includes three shaking units arranged along the length direction of the secondary screening mechanism 8. The first-stage vibration mechanism 3 includes three vibration wheel shafts with the same rotation speed: first-stage vibration wheel shaft I 303, first-stage vibration wheel shaft II 302 and first-stage vibration wheel shaft III 301. At least one vibration mechanism is installed on each of the first-stage vibration wheel shafts I 303, II 302 and III 301. The secondary vibration mechanism 7 includes secondary vibration wheel shaft I 703, secondary vibration wheel shaft II 702 and secondary vibration wheel shaft III 701 with the same rotation speed, and at least one vibration mechanism is installed on each shaft; The installation phases of the multiple vibration mechanisms on their corresponding vibrating wheel shafts are staggered to allow the screening mechanism to obtain composite vibration.

[0052] In one specific embodiment of the present invention, such as Figure 3 As shown, the primary screening mechanism 1 includes a primary screening drive shaft 101, a primary drive wheel 102, a rubber belt 103, a rubber rod 104, and a primary driven wheel 105.

[0053] The primary drive wheel 102 is mounted on the primary screen drive shaft 101, the primary screen drive shaft 101 is mounted on the right side plate 2 and the left side plate 6, and the primary driven wheel 105 is symmetrically mounted on the right side plate 2 and the left side plate 6.

[0054] The rubber belt 103 is annularly mounted on the primary drive wheel 102 and the primary driven wheel 105. The rubber belt 103 has several grooves and several rubber rods 104 are installed in parallel at intervals. The surface of the rubber rods 104 has several protrusions. The protrusions are stepped cylindrical structures, which are coaxially combined with a large cylinder at the bottom and a small cylinder at the top. The protrusions and the rubber rods 104 are integrally formed. When the primary screening mechanism 1 conveys the soil-film mixture backward, the protrusions pick up the residual film to achieve film-soil separation.

[0055] In one specific embodiment of the present invention, such as Figure 4 As shown, the secondary screening mechanism 8 includes a secondary screen drive shaft 801, a secondary drive wheel 802, a rubber belt 103, a rubber rod 104, and a secondary driven wheel 803.

[0056] The secondary drive wheel 802 is mounted on the secondary screen drive shaft 801, the secondary screen drive shaft 801 is mounted on the right side plate 2 and the left side plate 6, and the secondary driven wheel 803 is symmetrically mounted on the right side plate 2 and the left side plate 6.

[0057] The rubber belt 103 is annularly mounted on the secondary drive wheel 802 and the secondary driven wheel 803. The rubber belt 103 has several grooves and several rubber rods 104 are installed in parallel at intervals. The surface of the rubber rod 104 has several protrusions. The protrusions are stepped cylindrical structures, which are coaxially combined with a large cylinder at the bottom and a small cylinder at the top. The protrusions and the rubber rods 104 are integrally formed. When the secondary screening mechanism 8 conveys the soil-film mixture backward, the protrusions pick up the residual film to achieve film-soil separation.

[0058] Furthermore, the secondary screening mechanism 8 is installed at a smaller angle than the primary screening mechanism 1, and the rotational speed of the secondary screening drive shaft 801 is lower than that of the primary screening drive shaft 101, so that the secondary screening mechanism 8 has a longer contact time with the soil film mixture conveyed by the primary screening mechanism, thereby achieving more thorough screening of the soil film mixture.

[0059] In one specific embodiment of the present invention, such as Figure 5 and Figure 6 As shown, the primary vibration mechanism 3 includes a primary vibration wheel shaft III 301, a primary vibration wheel shaft II 302, a primary vibration wheel shaft I 303, a rubber wheel 304, a triangular plate 305, and a clamping wheel 306.

[0060] The rubber wheels 304 are evenly distributed on the three corners of the triangular plate 305. The triangular plate 305 is connected to the clamping wheels 306. The first-stage shaking wheel shaft III 301, the first-stage shaking wheel shaft II 302, and the first-stage shaking wheel shaft I 303 are each equipped with two clamping wheels 306. In a specific embodiment of the present invention, preferably, the three corners of the triangular plate 305 are provided with elliptical mounting holes with a length of 10-20mm, which are installed outwards to increase the amplitude of the vibration generated by the rubber wheel 304 on the screening mechanism; the clamping wheel 306 has an opening of 2-4mm on one side, and bolts, washers and nuts are connected above and below the opening. The locking nut can make the clamping wheel 306 generate friction with the shaking wheel shaft to fix the clamping wheel 306.

[0061] In a specific embodiment of the present invention, preferably, the clamping wheels 306 on the first-stage shaking wheel shaft I 303 are symmetrically installed at positions closest to the center of symmetry, divided into five equal parts; the clamping wheels 306 on the first-stage shaking wheel shaft II 302 are symmetrically installed at positions closest to the center of symmetry, divided into five equal parts; and the clamping wheels 306 on the first-stage shaking wheel shaft III 301 are symmetrically installed at positions closest to the center of symmetry, divided into three equal parts. This arrangement allows the soil to jump and tumble in directions parallel and perpendicular to the sieve surface, increasing the soil sieve penetration rate.

[0062] Preferably, the rotational speeds of the first-stage vibrating wheel shafts III 301, II 302, and I 303 are the same. Preferably, the clamping wheels 306 on the first-stage vibrating wheel shafts III 301, II 302, and I 303 can be moved left and right along the vibrating wheel shafts based on the above layout. Figure 7 and Figure 8 A schematic diagram illustrating the motion principle of soil particles on a screen surface is shown. V1 represents the velocity of the screen along its conveying direction, V2 and V3 represent the instantaneous velocity components generated by the vibration mechanism (V2 along the screen surface direction, V3 perpendicular to the screen surface direction), and θ is the screen installation inclination angle. Soil particles move along the dashed trajectory in the diagram under the action of a resultant force, achieving jumping and tumbling. By staggering the installation phases of multiple vibrating units on their vibrating wheel shafts, a composite vibration can be achieved on the screen surface. This vibration can simultaneously impart acceleration to the soil particles along and parallel to the screen surface direction, effectively causing the soil particles to jump, loosen, and tumble, greatly improving the screening and separation efficiency. The purpose of staggering the installation phases of the multiple vibrating units on their shafts is to generate a composite vibration on the screen surface. This vibration can synchronously drive the soil particles to move in multiple directions (e.g., ...). Figure 7 , 8 As shown in the figure, this mechanism efficiently achieves the jumping, loosening and continuous tumbling of materials, which is one of the key mechanisms that enables the mechanism to effectively prevent soil clogging and improve separation efficiency.

[0063] like Figure 9 As shown, the transmission mechanism 5 includes a reducer 501, a reducer bracket I 503, a reducer bracket II 504, a right output shaft 502, and a left output shaft 505. The reducer bracket I 503 is symmetrically mounted on the inner sides of the right side plate 2 and the left side plate 6, the reducer bracket II 504 is symmetrically mounted on the reducer bracket I 503, and the reducer 501 is centrally mounted on the reducer bracket I 503.

[0064] The right output shaft 502 of the reducer of the transmission mechanism 5 transmits power sequentially to the primary screen drive shaft 101, the secondary screen drive shaft 801, the secondary vibrating wheel shaft III 701, the secondary vibrating wheel shaft II 702, and the secondary vibrating wheel shaft I 703 via chain drive. The primary screen drive shaft 101 transmits power sequentially to the primary vibrating wheel shaft III 301, the primary vibrating wheel shaft II 302, and the primary vibrating wheel shaft I 303 via chain drive at the other end. By setting the gear ratio of the relevant sprockets, the rotational speeds of the primary vibrating wheel shafts III 301, II 302, and I 303 are the same; the rotational speeds of the secondary vibrating wheel shafts III 701, II 702, and I 703 are the same, but less than the rotational speeds of the primary vibrating wheel shafts III 301, II 302, and I 303.

[0065] like Figure 10 and 11 As shown, the secondary vibration mechanism 7 includes a secondary vibration wheel shaft III 701, a secondary vibration wheel shaft II 702, a secondary vibration wheel shaft I 703, rubber wheels 304, a triangular plate 305, and clamping wheels 306. The rubber wheels 304 are evenly distributed on the three corners of the triangular plate 305, which is connected to the clamping wheels 306. Each of the secondary vibration wheel shafts III 701, II 702, and I 703 has two clamping wheels 306 installed on it. Preferably, the three corners of the triangular plate 305 are provided with elliptical mounting holes, each 20mm long, facing outwards, to increase the amplitude of the vibration generated by the rubber wheels 304 on the screening mechanism. The clamping wheels 306 on the secondary vibrating wheel shaft I are symmetrically installed at positions closest to the center of symmetry, divided into three equal parts; the clamping wheels 306 on the secondary vibrating wheel shaft II are symmetrically installed at positions closest to the center of symmetry, divided into five equal parts; the clamping wheels 306 on the secondary vibrating wheel shaft III 701 are symmetrically installed at positions closest to the center of symmetry, divided into five equal parts; the rotational speeds of the secondary vibrating wheel shafts III 701, II 702, and I 703 are the same and higher than those of the primary vibrating wheel shafts III 301, II 302, and I 303. The clamping wheels 306 on the secondary vibrating wheel shafts III 701, II 702, and I 703 can be moved left and right along the vibrating wheel shafts based on the above layout. Preferably, the secondary vibration mechanism 7 is equipped with a smaller amplitude and a higher frequency vibration motion compared to the primary vibration mechanism 3.

[0066] like Figure 12As shown, the tensioning mechanism 9 includes a tensioning sprocket 901, an angular contact ball bearing 902 with a dust cover, and a tensioning bracket 903. The angular contact ball bearing 902 with a dust cover is installed inside the tensioning sprocket 901 and is mounted on the tensioning bracket 903 by bolts, washers, and nuts. The tensioning mechanism 9 is used to tension the chain between the right output shaft 502 of the reducer and the drive shaft 101 of the primary screen.

[0067] like Figure 13 As shown, the right side plate 2 and the left side plate 6 are symmetrically installed. Both have multiple round holes of different sizes in their vertical planes and rectangular short plates extending outwards in their horizontal planes, which are used to install and fix the bearing seats in the direction of the right output shaft 502 and the left output shaft 505 of the reducer.

[0068] In one specific embodiment of the present invention, the installation distance between the right side plate 2 and the left side plate 6 is 1000mm.

[0069] Furthermore, the brackets I4, II10, and III11 are constructed from rectangular tubes and bracket mounting plates, and are installed in a triangular configuration inside the right side plate 2 and the left side plate 6. Specifically, bracket I4 is located in the upstream portion between the right side plate 2 and the left side plate 6, while brackets II10 and III11 are located in the downstream portion, with bracket II10 located upstream of bracket III11.

[0070] This invention solves the problems of severe soil buildup, high frictional resistance, and low soil separation efficiency in current soil film recycling machines. It reduces frictional resistance, prevents soil buildup, and increases the screening rate, thereby reducing soil buildup on the screen and improving the efficiency of soil screening.

[0071] A soil film recycling machine includes the aforementioned two-stage multi-dimensional vibrating screen mechanism.

[0072] This invention employs a two-stage multi-dimensional vibrating screen mechanism, which can effectively reduce frictional resistance, reduce soil accumulation on the screen, and improve the efficiency of soil screening, thereby increasing the residual film recovery rate.

[0073] The primary screening mechanism 1 of this invention rapidly conveys materials, reducing soil accumulation and clogging on the screen surface, and initially screening fine soil particles. The secondary screening mechanism 8 of this invention receives the material after primary screening and performs further fine screening, separating residual film from larger remaining soil clumps, preventing residual film from being trapped by soil, and improving film-soil separation efficiency and film collection rate. Through the combination of the primary screening mechanism 1 and the secondary screening mechanism 8, rapid conveying of soil clumps and residual film is achieved, reducing soil clogging.

[0074] The primary vibration mechanism 3 of this invention provides high-frequency, low-amplitude vibration, causing the soil to jump and move forward on the screen surface, thus reducing drag, preventing blockage, and rapidly conveying the soil-film mixture. Specifically, through the transmission system settings, its operating frequency is preferably 9-15Hz, and the amplitude can be adjusted within the range of 15-35mm. The elliptical mounting holes on the three corners of the triangular plate 305 allow the installation position of the rubber wheel 304 to shift within a certain range. When the rubber wheel 304 is installed and fixed towards the outside of the triangular plate, its force arm on the rubber belt 103 increases, thereby increasing the vibration amplitude obtained on the screen surface, which can reach a maximum of about 35mm; conversely, when the rubber wheel 304 is installed towards the inside, the amplitude decreases, which can reach a minimum of about 15mm. This high-frequency, low-amplitude vibration mainly promotes the jumping and rapid conveying of soil particles, preventing the accumulation of fine soil.

[0075] The secondary shaking mechanism 7 of this invention provides low-frequency, high-amplitude vibration, causing the material on the screen surface to tumble, ensuring that the residual film is fully exposed and separated, further improving the overall screening efficiency and residual film recovery rate. Specifically, its operating frequency is preferably 3-6Hz, and the amplitude can be adjusted within the range of 30-50mm. Similar to the primary shaking mechanism 3, the amplitude can be adjusted by changing the installation orientation of the rubber wheel 304 on the elliptical hole of the triangular plate 305, either outward or inward: when installed outward, the amplitude increases to approximately 50mm, and when installed inward, it decreases to approximately 30mm. This low-frequency, high-amplitude vibration can powerfully tumble and throw the material, fully exposing the residual film wrapped in the soil, thereby achieving deep separation.

[0076] During operation, the soil-membrane mixture first enters the primary screening mechanism (1). Driven by the primary screen drive shaft (101), the mixture is rapidly conveyed backward along the rubber belt (103). At the same time, the primary vibration mechanism (3), driven by the transmission mechanism (5), begins to work, and its rubber wheel (304) applies high-frequency, low-amplitude periodic vibration to the primary screen surface. Under this combined motion, most of the fine soil particles fall rapidly through the screen openings under the vibration, while the residual film and a small amount of unseparated soil clods are picked up by the protrusions on the rubber rod (104) and continue to be conveyed backward, completing the initial separation of the soil-membrane and rapid soil removal.

[0077] Subsequently, the pre-separated material falls from the end of the primary screening mechanism (1) into the secondary screening mechanism (8) below it. The secondary screening mechanism (8) has a smaller inclination angle and a slower conveying speed, resulting in a longer material residence time. At the same time, the secondary shaking mechanism (7), driven by the transmission mechanism, applies low-frequency, high-amplitude vibration to the secondary screen surface. This vibration mode, with greater intensity and a stronger tumbling effect, can further break up the soil clods, allowing the remaining soil to be completely separated from the residual film and fall through the screen holes. Finally, through the combined effect of two-stage screening and two vibrations with different characteristics, efficient and thorough separation of the residual film and soil is achieved, effectively solving the problems of soil clogging and incomplete separation in heavy clay soils.

[0078] It should be understood that although this specification is described according to various embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0079] The detailed descriptions listed above are merely specific illustrations of feasible embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent embodiments or modifications made without departing from the spirit of the present invention should be included within the scope of protection of the present invention.

Claims

1. A two-stage multidimensional vibrating screen mechanism, characterized in that, It includes a primary screening mechanism (1), a primary shaking mechanism (3), a secondary shaking mechanism (7), and a secondary screening mechanism (8); The starting end of the secondary screening mechanism (8) is located downstream of the end of the primary screening mechanism (1); The first-stage shaking mechanism (3) acts on the first-stage screening mechanism (1) to drive the first-stage screening mechanism (1) to generate a first vibration; the second-stage shaking mechanism (7) acts on the second-stage screening mechanism (8) to drive the second-stage screening mechanism (8) to generate a second vibration; wherein, the frequency of the first vibration is higher than that of the second vibration, and the amplitude of the first vibration is smaller than that of the second vibration.

2. The two-stage multidimensional vibrating screen mechanism according to claim 1, characterized in that, It also includes the right side plate (2), bracket I (4), left side plate (6), bracket II (10) and bracket III (11); The right side plate (2) and the left side plate (6) are arranged opposite to each other and are fixed together by bracket I (4), bracket II (10) and bracket III (11); wherein, along the material conveying direction of the primary screening mechanism (1), bracket I (4) is located in the upstream part between the right side plate (2) and the left side plate (6), bracket II (10) and bracket III (11) are located in the downstream part, and bracket II (10) is located upstream of bracket III (11); The primary screening mechanism (1), the secondary screening mechanism (8), the primary shaking mechanism (3) and the secondary shaking mechanism (7) are all installed between the right side plate (2) and the left side plate (6).

3. The two-stage multidimensional vibrating screen mechanism according to claim 1, characterized in that, Both the primary screening mechanism (1) and the secondary screening mechanism (8) include a ring-shaped rubber belt (103) and multiple rubber rods (104) spaced apart on the rubber belt (103); the surface of the rubber rods (104) is provided with a number of integrally formed protrusions, and the protrusions are stepped cylindrical structures.

4. The two-stage multidimensional vibrating screen mechanism according to claim 1, characterized in that, The installation angle of the primary screening mechanism (1) is greater than the installation angle of the secondary screening mechanism (8).

5. The two-stage multidimensional vibrating screen mechanism according to claim 2, characterized in that, It also includes a transmission mechanism (5); the transmission mechanism (5) is installed between the right side plate (2) and the left side plate (6); The transmission mechanism (5) is connected to the primary screening mechanism (1), the secondary screening mechanism (8), the primary shaking mechanism (3) and the secondary shaking mechanism (7) respectively, and is used to provide power to the primary screening mechanism (1), the secondary screening mechanism (8), the primary shaking mechanism (3) and the secondary shaking mechanism (7).

6. The two-stage multidimensional vibrating screen mechanism according to claim 5, characterized in that, The transmission mechanism (5) drives the first-stage vibration mechanism (3) and the second-stage vibration mechanism (7) through a chain drive system. The chain drive system is configured such that the operating speed of the first-stage vibration mechanism (3) is higher than the operating speed of the second-stage vibration mechanism (7).

7. The two-stage multidimensional vibrating screen mechanism according to claim 1, characterized in that, Both the primary jitter mechanism (3) and the secondary jitter mechanism (7) include at least one jitter unit; The shaking unit includes a rotatable shaking wheel shaft and at least one vibration mechanism; the vibration mechanism includes a clamping wheel (306) fixed on the shaking wheel shaft, a triangular plate (305) connected to the clamping wheel (306), and a rubber wheel (304) installed at the corner of the triangular plate (305). The corner of the triangular plate (305) is provided with an elliptical mounting hole that allows the installation position of the rubber wheel (304) to be adjusted; by changing the fixed position of the rubber wheel (304) in the elliptical mounting hole, the effective radius of action of the rubber wheel (304) can be adjusted, thereby changing the vibration amplitude of the corresponding screening mechanism.

8. The two-stage multidimensional vibrating screen mechanism according to claim 7, characterized in that, The primary shaking mechanism (3) includes multiple shaking units arranged along the length of the primary screening mechanism (1), and the secondary shaking mechanism (7) includes multiple shaking units arranged along the length of the secondary screening mechanism (8).

9. The two-stage multidimensional vibrating screen mechanism according to claim 8, characterized in that, The first-stage shaking mechanism (3) includes three shaking units arranged along the length direction of the first-stage screening mechanism (1), and the second-stage shaking mechanism (7) includes three shaking units arranged along the length direction of the second-stage screening mechanism (8). The first-stage vibration mechanism (3) includes three vibration wheel shafts with the same rotation speed: first-stage vibration wheel shaft I (303), first-stage vibration wheel shaft II (302) and first-stage vibration wheel shaft III (301). At least one vibration mechanism is installed on each of the first-stage vibration wheel shaft I (303), first-stage vibration wheel shaft II (302) and first-stage vibration wheel shaft III (301). The secondary vibration mechanism (7) includes secondary vibration wheel shaft I (703), secondary vibration wheel shaft II (702) and secondary vibration wheel shaft III (701) with the same rotation speed, and each shaft is equipped with at least one vibration mechanism; The installation phases of the multiple vibration mechanisms on their corresponding vibrating wheel shafts are staggered to allow the screening mechanism to obtain composite vibration.

10. A machine for recycling residual film from tillage layers, characterized in that, The two-dimensional multi-dimensional vibrating screen mechanism includes any one of claims 1 to 9.

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