Hand-operated double-screen winnowing device for winnowing separation of straw mulching film

Abstract

In order to solve the problems of low sorting efficiency and high impurity rate during sorting of straw mulching film materials at present, the invention provides a hand-operated double-screen sorting device for winnowing separation of straw mulching films, materials enter a left inclined screen and a right inclined screen which are composed of symmetrical parallelogram mechanisms after being winnowed and separated, and the left inclined screen and the right inclined screen are separated; the inclined sieve is driven by a motor to do planar motion through hand cranking (when necessary), so that straws, mulching films and excess materials are rapidly separated, and in order to adjust the blowing angle, the adjusting holes capable of adjusting the inclination angle of the inclined sieve are formed in the vertical rod of the rack so as to adapt to sorting of different materials.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural mechanized processing equipment, and in particular to a hand-cranked double-screen sorting device for wind separation of straw and mulch film with simple structure and convenient use. Background Art

[0002] Straw mulch is an environmentally friendly covering material widely used in agricultural production in my country. It is mainly used to maintain soil moisture, inhibit weed growth, regulate soil temperature, etc., thereby promoting crop growth and increasing yield. With the development of agricultural mechanization, the recycling and reuse of straw and mulch has become an important part of agricultural production. However, straw mulch is often mixed with soil, crop residues and other debris after use, which is difficult to effectively separate, bringing many challenges to subsequent recycling and treatment. Existing straw mulch sorting technology mainly relies on mechanical sorting equipment, which usually uses vibrating screens, airflow sorting or drum screens for separation. However, these traditional sorting technologies have some obvious defects in application: first, the equipment is complex and aging, not simple enough, and has high operating costs, which is difficult to meet the needs of large-scale agricultural production. Second, the equipment has poor adaptability to materials. When the moisture content of the straw is high or the mulch material layer is thick, the sorting effect is significantly reduced, resulting in a high impurity rate in the recycled mulch. Therefore, at this stage, a new type of straw and mulch sorting device is urgently needed. Summary of the invention

[0003] The invention provides a hand-cranked double-screen sorting device for wind separation of straw and mulch film, which solves the problems of low sorting efficiency and high impurity content in the prior art when sorting straw and mulch film.

[0004] The technical solution of the present invention is implemented as follows: a hand-operated double-screen sorting device for wind separation of straw mulch film, comprising:

[0005] A frame (1), wherein the frame (1) is used to carry a wind shield (12), a double inclined screen (3), a fan (19), and a blowing nozzle (20);

[0006] A wind shield (12), wherein the upper surface of the wind shield (12) is provided with a material inlet (6) for feeding straw and mulch materials to be sorted;

[0007] A fan (19), the fan (19) is arranged on one side of the frame (1) close to the feed inlet (6), and is connected to the blowing nozzle (20) through the air guide pipe (18) to achieve wind-blown sorting of straw and ground film;

[0008] The blowing nozzle (20) is hingedly connected to the frame (1) by means of bolts, and the angle of the blowing nozzle (20) can be adjusted through the wind direction adjustment hole (11);

[0009] Double inclined screens (3), the double inclined screens (3) are placed obliquely below the blowing nozzle (20), and are arranged symmetrically on the left and right, and are respectively a left inclined screen (4) and a right inclined screen (5). The double inclined screens (3) perform translational motion through a parallelogram mechanism to separate the straw and the mulch film and sort the remaining materials;

[0010] One end of the left inclined screen (4) and the right inclined screen (5) are hingedly connected by an inclined screen driving rod (10), one end of the inclined screen driving rod (10) is hingedly connected to a main connecting rod (7), and the other end is hingedly connected to a frame (1) and fixedly provided with a crank, and the main connecting rod (7) is hingedly connected to the frame (1);

[0011] The other two sides of the left inclined screen (4) and the right inclined screen (5) are both hinged to the auxiliary connecting rod (8), and the auxiliary connecting rod (8) is hinged to the frame (1);

[0012] The left inclined screen (4) and the right inclined screen (5) respectively form a parallelogram-shaped planar connecting rod mechanism (9) with the corresponding main connecting rod (7), auxiliary connecting rod (8), crank handle and frame (1);

[0013] The left inclined screen (4) and the right inclined screen (5) respectively realize planar synchronous motion through the corresponding main connecting rod (7) and auxiliary connecting rod (8).

[0014] As a preferred embodiment, the four groups of vertical rods (23) of the frame (1) are provided with twelve angle adjustment holes (13) arranged in the vertical direction, three in each group and symmetrical in twos in four directions, front and back, left and right. One end of the auxiliary connecting rod (8) is hingedly connected to one of the angle adjustment holes (13) for adjusting the working angles of the left inclined screen (4) and the right inclined screen (5), respectively.

[0015] As a preferred embodiment, the inner cavity of the storage bucket (2) is divided into a ground film chamber (14), a straw chamber (15) and a residual material chamber (16);

[0016] The residual material chamber (16) is located directly below the double inclined screen (3), the ground film chamber (14) is located at an end away from the fan (19), and the straw chamber (15) is located at an end close to the fan (19).

[0017] As a preferred embodiment, the wind shield (12) is fixed to the frame (1) on both side surfaces and the top surface of the double inclined screen (3), and the wind shield (12) is made of glass material or transparent acrylic material, which facilitates observation of the sorting situation inside the shield.

[0018] After adopting the above technical scheme, the beneficial effect of the present invention is as follows: the hand-cranked double-screen sorting device for wind-sorting and separating straw and mulch film of the present invention can sort the straw and mulch film fed into the feed port (6) through the synchronous movement of the double inclined screens (3), the wind force of the fan (19), the gravity of the straw, mulch film and residual materials themselves, and the interaction force between the straw, mulch film and / or residual materials. The sorted straw and mulch film fall into the storage hopper (2) below respectively under the action of their own gravity. At the same time, in the process of sorting the straw and mulch film, the double inclined screens (3) arranged in the frame (1) can blow out the residual materials in the straw and mulch film to separate them from the straw and mulch film, thereby finally achieving the technical effect of sorting the straw and mulch film.

[0019] The present invention forms two parallelogram planar connecting rod mechanisms (9) with the left inclined screen (4) and the right inclined screen (5) through the arrangement of the main connecting rod (7) and the auxiliary connecting rod (8), and then the two planar connecting rod mechanisms (9) are driven by the screen surface driving shaft to realize cyclic deformation, and finally realize the reciprocating translational motion of the left inclined screen (4) and the right inclined screen (5), so as to achieve the purpose of sorting straw and ground film.

[0020] The present invention has twelve vertical angle adjustment holes (13) on the frame (1), and these angle adjustment holes (13) are evenly arranged in the vertical direction, but each angle adjustment hole (13) is at a different distance from the hinge hole of the main connecting rod (7), so that the end of the auxiliary connecting rod (8) can be connected to different angle adjustment holes (13) according to different needs, thereby achieving the purpose of changing the movement position of the auxiliary connecting rod (8), and then fine-tuning the vibration angle of the double inclined screen (3). BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative labor.

[0022] Figure 1 A schematic diagram of the structure of an embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of top view;

[0024] Figure 3 for Figure 1 The schematic diagram of the structure in which the wind shield (12) is removed;

[0025] Figure 4 for Figure 3 A front view schematic diagram of

[0026] Figure 5 for Figure 3 A right side schematic diagram of

[0027] Figure 6 for Figure 3 Schematic diagram of top view;

[0028] Figure 7 is a schematic structural diagram of a double inclined screen (3);

[0029] Figure 8 is a schematic structural diagram of a storage bucket (2);

[0030] In the figure: 1-frame; 2-storage bucket; 3-double inclined screens; 4-left inclined screen; 5-right inclined screen; 6-feeding port; 7-main connecting rod; 8-auxiliary connecting rod; 9-plane connecting rod mechanism; 10-inclined screen driving rod; 11-wind direction adjustment hole; 12-wind shield; 13-angle adjustment hole; 14-film chamber; 15-straw chamber; 16-residual material chamber; 17-crank handle; 18-air guide duct; 19-fan; 20-blowing nozzle; 21-air inlet; 22-air outlet; 23-vertical pole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example:

[0033] like Figure 1-Figure 2 As shown, an embodiment of a hand-cranked double-screen sorting device for wind separation of straw mulch film of the present invention is provided, which comprises a fixed frame (1). The frame (1) is a rectangular parallelepiped structure as a whole, and the interior is designed as a cavity for installing other functional components. The two side surfaces and the top of the frame (1) are respectively provided with wind shields (12) fixedly connected thereto, together forming a closed chamber. The two side surfaces of the wind shield (12) can be made of transparent materials (such as glass or acrylic) and fixed to the frame (1) by bolt connection or welding. The top of the wind shield (12) is preferably made of 45 steel material and is firmly connected to the frame (1) by welding.

[0034] A fan (19) is installed on one side of the frame (1), which serves as an air inlet (21), and the other side of the frame (1) opposite thereto serves as an air outlet (22). The fan (19) is connected to a blowing nozzle (20) on the frame (1) through an air duct (18), and the diameter of the air duct (18) is consistent from beginning to end. The front end of the blowing nozzle (20) is circular in design and directly docks with the air duct (18); the rear end is a rectangular outlet, which is fixed to the frame (1) by bolts and communicates with the internal space of the frame (1) to form a complete air duct system. When the fan (19) is running, the generated airflow enters the interior of the frame through the blowing nozzle (20), and the wind force is used to separate the straw, ground film and other impurities by gravity. The heavier straw will be blown to the left inclined screen (5), and the lighter ground film will be blown to the right inclined screen (4). The frame (1) is provided with a wind direction adjustment hole (11), which can adjust the airflow blowing angle of the blowing nozzle (20).

[0035] A feed inlet (6) is provided on the top of the wind shield (12) near the air inlet (21) for feeding the straw mulch film mixture to be cleaned. After the bundled mixture is broken up, it is evenly fed in from the feed inlet (6). The size and shape of the feed inlet (6) can be adjusted according to actual needs to accommodate different types and quantities of mixed straw mulch film materials.

[0036] Angle adjustment holes (13) for three layers of double inclined screens (3) are arranged vertically up and down on the vertical rods (23) on both sides of the frame (1), and are symmetrical in pairs in front, back, left and right, with a total of twelve. One end of two auxiliary connecting rods (8) is hinged at one of the angle adjustment holes (13), and the other end of the auxiliary connecting rod (8) is hinged to the tail end of the double inclined screen (3). The purpose of setting the three layers of angle adjustment holes (13) is to adjust the angle of the double inclined screen (3) to adapt to the efficient collection of straw with different humidity, mulch films of different thicknesses and different types of residual materials. The uppermost angle adjustment hole (13) can adjust the double inclined screen (2) to a horizontal position. If necessary, the main connecting rod (7) and the auxiliary connecting rod (8) can be shortened at the same time to change the amplitude of the double inclined screen (3) so that it can adapt to different working environments.

[0037] like Figure 3-Figure 6 As shown, the cleaning mechanism in this embodiment mainly includes a left oblique screen (5) and a right oblique screen (4) arranged symmetrically, and circular screen holes are provided on the left oblique screen (5) and the right oblique screen (4). The left oblique screen (5) is used to sort straw, and the right oblique screen (4) is used to sort ground film. The two screen surfaces are synchronized when performing the screening action, and both are translational motions, and a crank handle (17) is used to provide a power source by hand-cranking.

[0038] like Figure 4 and Figure 7As shown, one end of the main connecting rod (7) is hinged on the frame (1), and the other end is hinged to the head of the double inclined screen (3), and is driven by hand through the crank handle (17) on the inclined screen driving rod (10). If necessary, the upper synchronous belt can be replaced with a motor drive. The inclined screen driving rod (10) can ensure that the double inclined screens (3) are driven to move synchronously, and their vibration frequencies are consistent. The inclined screen driving rod (10) cooperates with the main connecting rod and the auxiliary connecting rod to directly drive the left inclined screen (4) to move. The main connecting rod, the auxiliary connecting rod and the left inclined screen (4) form a parallelogram planar connecting rod mechanism (9) with the frame to perform reciprocating planar motion.

[0039] like Figure 8 The figure shows the structure of the storage hopper (2) of the embodiment. The storage hopper (2) is in the shape of a rectangular box as a whole. It is located in the frame (1) and below the double inclined screen (3) to receive the fallen straw, ground film and residual materials. The two sides of the top of the storage hopper (2) are inclined inward to set an angle, and the angle between it and the horizontal plane is 45°, which can maximize the collection of straw, ground film and residual materials, and facilitate the collection of materials. The inner cavity of the storage hopper (2) is divided by a steel plate into a residual material chamber (16) with a larger volume and a straw chamber (15) and a ground film chamber (14) with a smaller volume, wherein the straw chamber (15) is located at the front, close to the fan (19), the residual material chamber (16) is located in the middle, and the ground film chamber (14) is located at the rear, away from the fan (19). Under the action of the wind force of the fan (19), the heavier straw falls on the left inclined screen (4) close to the fan (19), and the lighter ground film falls on the right inclined screen (5) far from the fan. The straw and ground film are vibrated by the double inclined screens (3) and continuously slide into the straw chamber (15) and the ground film chamber (14), respectively, while the residual material therein falls into the residual material chamber (16) through the double inclined screens (3). The larger residual material chamber (16) can continuously accommodate the residual material, and the smaller straw chamber (15) and ground film chamber (14) can directly shovel out the straw and ground film in time through the two sides of the frame (1) for collection and treatment.

[0040] In summary, the hand-cranked double-screen sorting device for wind-sorting and separating straw and mulch film of the present invention has a simple structure and is easy to use. The design of the double inclined screens (3) solves the problems of low sorting efficiency and high impurity content in the prior art of straw and mulch film sorting. The design of the wind direction adjustment hole (11) solves the problem that the blowing angle of the blowing nozzle (20) is single and cannot be adjusted. The design of the adjustable angle of the double inclined screens (3) allows straws of different humidity, mulch films of different thicknesses and different types of residual materials to be efficiently collected into the storage bucket (2), thereby solving the problem of difficulty in separating straw, mulch films and residual materials, and having good practicality.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A hand-operated double-screen sorting device for wind separation of straw mulch film, characterized in that: include: A frame (1), wherein the frame (1) is used to carry a wind shield (12), a double inclined screen (3), a fan (19), and a blowing nozzle (20); A wind shield (12), wherein the upper surface of the wind shield (12) is provided with a material inlet (6) for feeding straw and mulch materials to be sorted; A fan (19), the fan (19) is arranged on one side of the frame (1) close to the feed inlet (6), and is connected to the blowing nozzle (20) through the air guide pipe (18) to achieve wind-blown sorting of straw and ground film; The blowing nozzle (20) is hingedly connected to the frame (1) by means of bolts, and the angle of the blowing nozzle (20) can be adjusted through the wind direction adjustment hole (11); Double inclined screens (3), the double inclined screens (3) are placed obliquely below the blowing nozzle (20), and are arranged symmetrically on the left and right, and are respectively a left inclined screen (4) and a right inclined screen (5). The double inclined screens (3) perform translational motion through a parallelogram mechanism to separate the straw and the mulch film and sort the remaining materials; One end of the left inclined screen (4) and the right inclined screen (5) are hingedly connected by an inclined screen driving rod (10), one end of the inclined screen driving rod (10) is hingedly connected to a main connecting rod (7), and the other end is hingedly connected to a frame (1) and fixedly provided with a crank, and the main connecting rod (7) is hingedly connected to the frame (1); The other two sides of the left inclined screen (4) and the right inclined screen (5) are both hinged to the auxiliary connecting rod (8), and the auxiliary connecting rod (8) is hinged to the frame (1); The left inclined screen (4) and the right inclined screen (5) respectively form a parallelogram-shaped planar connecting rod mechanism (9) with the corresponding main connecting rod (7), auxiliary connecting rod (8), crank handle and frame (1); The left inclined screen (4) and the right inclined screen (5) respectively achieve synchronous circular motion through corresponding main connecting rods (7) and auxiliary connecting rods (8).

2. The hand-operated double-screen sorting device for wind separation of straw mulch film according to claim 1, characterized in that: The four groups of vertical rods (23) of the frame (1) are provided with twelve angle adjustment holes (13) arranged in the vertical direction, three in each group and symmetrical in pairs in front, back, left and right directions. One end of the auxiliary connecting rod (8) is hingedly connected to one of the angle adjustment holes (13) for adjusting the working angles of the left inclined screen (4) and the right inclined screen (5) respectively.

3. The hand-operated double-screen sorting device for wind separation of straw mulch film according to claim 1, characterized in that: The inner cavity of the storage hopper (2) is divided into a ground film chamber (14), a straw chamber (15) and a residual material chamber (16); The residual material chamber (16) is located directly below the double inclined screen (3), the ground film chamber (14) is located at an end away from the fan (19), and the straw chamber (15) is located at an end close to the fan (19).

4. The hand-operated double-screen sorting device for wind separation of straw mulch film according to claim 1, characterized in that: The wind shield (12) is fixed to the frame (1) on both side surfaces and the top surface of the double inclined screen (3); the wind shield (12) is made of glass material or transparent acrylic material, which is convenient for observing the sorting situation in the shield.

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