Winnowing machine for separating straw impurities

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a winnowing machine for separating straw impurities, which comprises a frame, a vibrating screen and a rolling shifting mechanism. The vibrating screen and the rolling material stirring mechanism are both installed on the rack, the rolling material stirring mechanism is shorter than the vibrating screen, and the tail end of the rolling material stirring mechanism is located on the upper side of the vibrating screen; the rolling material stirring mechanism comprises a frame and a plurality of material stirring sets, each material stirring set comprises a material stirring roller and a material stirring disc, the two ends of each material stirring roller are rotationally installed on the frame, the material stirring discs are installed on the material stirring rollers, the multiple material stirring discs are arranged in the axial direction of the material stirring rollers, and sawteeth are arranged on the peripheries of the material stirring discs. By additionally arranging the upper-layer sawtooth-shaped material stirring disc, the problems that the production efficiency is low, grass balls cannot be scattered, and impurities in the grass balls cannot be effectively removed are solved, and therefore the treatment efficiency and purity of straw are improved.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a wind separator for separating straw impurities. Background Technology

[0002] Straw wind separators are mainly used to remove soil and impurities from crop straw to improve its utilization value. During agricultural production and straw recycling, straw often contains impurities such as dust and small pieces of sand, which can affect its effectiveness as feed or fuel. Therefore, an effective device is needed to remove these impurities. Straw wind separators use a combination of a blower and a sieve to separate impurities from the straw, thereby improving its purity.

[0003] In existing technologies, commonly used straw air separators mainly consist of a frame, a sieve, a blower, and a cyclone separator. The working principle is that straw is placed on a shaking sieve; fine impurities mixed in with the straw pass through the sieve, while the straw and any remaining low-density impurities are fed into the cyclone separator by the blower. Heavy impurities such as sand and gravel, due to their greater density, cannot be drawn into the cyclone separator and are thus removed. After the straw and lighter dust enter the cyclone separator, the lighter dust is discharged through the air outlet, while the straw exits through the outlet at the bottom of the cyclone separator, achieving the purpose of removing soil and impurities. However, in existing air separators, the straw moves slowly forward on the shaking sieve, resulting in low production efficiency. Furthermore, they cannot effectively break up straw clumps, and impurities within the clumps cannot be effectively removed. Utility Model Content

[0004] To address the shortcomings of existing technologies, the purpose of this utility model embodiment is to provide an air separator for separating straw impurities. By adding an upper serrated material feeding disc, it solves the problems of low production efficiency, inability to break up straw clumps, and inability to effectively remove impurities from straw clumps in existing technologies, thereby improving the processing efficiency and purity of straw.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A wind separator for separating straw impurities includes: a frame, a vibrating screen, and a rolling feeding mechanism; both the vibrating screen and the rolling feeding mechanism are mounted on the frame, the length of the rolling feeding mechanism is shorter than the length of the vibrating screen, and the tail end of the rolling feeding mechanism is located on the upper side of the vibrating screen; the rolling feeding mechanism includes a frame and multiple feeding groups, each feeding group including feeding rollers and feeding discs, the two ends of the feeding rollers are rotatably mounted on the frame, the feeding discs are mounted on the feeding rollers and multiple discs are arranged along the axial direction of the feeding rollers, and the outer periphery of the feeding discs is provided with serrations.

[0007] Optionally, the axis of the feeding roller is perpendicular to the direction of straw movement, and there is a set gap between two adjacent feeding discs on each feeding group, with the feeding discs on two adjacent feeding groups arranged alternately.

[0008] Optionally, the frame is a bottomless U-shaped structure with the opening of the frame facing the direction of straw movement, and the two ends of the feeding roller are rotatably mounted on the side frame of the frame.

[0009] Optionally, support rods are provided on both sides of the frame, and the two side frames of the frame are respectively installed on the support rods on both sides of the frame.

[0010] Optionally, the feeding roller is provided with a keyway, and the feeding disc is mounted on the keyway of the feeding roller by a key.

[0011] Optionally, the rolling feeding mechanism further includes a drive mechanism, which includes a motor, a V-belt, and a transmission chain. Each feeding roller is equipped with a sprocket, and one of the feeding rollers is also equipped with a pulley. The motor is connected to the pulley via the V-belt, and the sprockets on the feeding rollers are connected via the transmission chain.

[0012] Optionally, both the rolling feeding mechanism and the vibrating screen are arranged at an angle, with the rear end of the rolling feeding mechanism and the vibrating screen lower than the front end along the direction of straw movement.

[0013] Optionally, the vibrating screen has two layers of screens, with the length of the upper screen being shorter than that of the lower screen, and the tail end of the upper screen being located above the lower screen.

[0014] Optionally, the air separator also includes a fan, which has two air inlets on its bottom side, located on the upper side of the tail ends of the upper and lower sieves respectively.

[0015] Optionally, the air separator may also include a cyclone separator, which is connected to the air outlet of the blower via a pipe.

[0016] One or more technical solutions provided in the embodiments of this utility model have at least the following technical effects or advantages:

[0017] 1. This air separator includes a frame, a vibrating screen, and a rolling feeding mechanism. The frame serves as the supporting foundation for the entire equipment, and both the vibrating screen and the rolling feeding mechanism are mounted on the frame. The length of the rolling feeding mechanism is shorter than the length of the vibrating screen, and its tail end is located above the vibrating screen. This design allows the straw, after initial separation on the rolling feeding mechanism, to smoothly enter the vibrating screen for further separation. The rolling feeding mechanism includes a frame and multiple feeding groups. Each feeding group consists of feeding rollers and feeding discs. The feeding discs are mounted on the feeding rollers and have multiple discs arranged axially with serrations on their outer periphery. The serrated structure of the feeding discs effectively breaks up clumps of straw, making it easier to separate impurities. Moreover, since most of the straw is conveyed forward through the upper rolling feeding mechanism, and a small portion is conveyed through the vibrating screen, the conveying efficiency is improved.

[0018] 2. The combination of a double-layer vibrating screen and a double-suction fan enables the grading and screening of impurities and optimizes the sorting path, ultimately improving production efficiency, enhancing the impurity removal effect, and reducing energy consumption.

[0019] Additional advantages of this invention will be set forth in the description which follows, and in part will be obvious from the description or may be learned by practice of the invention. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments and descriptions of this utility model are used to explain this utility model and do not constitute an undue limitation thereof. Furthermore, the spacing or dimensions between components are exaggerated to show their positions; the schematic diagrams are for illustrative purposes only.

[0021] Figure 1 This is a perspective view of the air separator provided in an embodiment of the present invention;

[0022] Figure 2 This is a front view of the air separator provided in this embodiment of the utility model;

[0023] Figure 3 This is a top view of the air separator provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the first angle of the rolling feeding mechanism provided in this embodiment of the utility model;

[0025] Figure 5 This is a second-angle schematic diagram of the rolling feeding mechanism provided in this embodiment of the utility model;

[0026] Figure 6 This is a schematic diagram of the material feeding assembly provided in an embodiment of this utility model;

[0027] Figure 7 This is a schematic diagram of the feeding disc provided in an embodiment of the present utility model;

[0028] Figure 8 This is a schematic diagram of the frame provided in an embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of the fan provided in an embodiment of the present utility model;

[0030] In the diagram: 1. Frame; 11. Support rod; 2. Vibrating screen; 3. Rolling feeding mechanism; 31. Feeding group; 311. Feeding roller; 312. Feeding disc; 32. Frame; 33. Drive mechanism; 4. Fan; 5. Shakelon; Detailed Implementation

[0031] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment proposes a wind separator for separating straw impurities, including: a frame 1, a vibrating screen 2, and a rolling feeding mechanism 3; both the vibrating screen 2 and the rolling feeding mechanism 3 are mounted on the frame 1, the length of the rolling feeding mechanism 3 is shorter than the length of the vibrating screen 2, and the tail end of the rolling feeding mechanism 3 is located on the upper side of the vibrating screen 2; as shown Figure 4 , Figure 5 , Figure 6 As shown, the rolling feeding mechanism 3 includes a frame 32 and multiple feeding groups 31. Each feeding group 31 includes feeding rollers 311 and feeding discs 312. The two ends of the feeding rollers 311 are rotatably mounted on the frame 32. The feeding discs 312 are mounted on the feeding rollers 311 and have multiple pieces arranged along the axial direction of the feeding rollers 311. The outer periphery of the feeding discs 312 is provided with serrations (such as...). Figure 7 (As shown).

[0033] The rolling feeding mechanism 3 supports multiple feeding groups 31 via a frame 32. Each feeding group 31 includes feeding rollers 311 and serrated feeding discs 312 distributed along the axial direction. The serrated structure enables rapid forward movement and dispersal of straw clumps when feeding the straw. At the same time, the gaps between the feeding discs 312 allow impurities to fall onto the vibrating screen 2, initially separating large particles of impurities and reducing the pressure of subsequent screening. This solves the problems of low production efficiency, inability to disperse straw clumps, and ineffective removal of impurities within straw clumps in existing technologies.

[0034] The axis of the feeding roller 311 is perpendicular to the direction of straw movement. There is a set gap between two adjacent feeding discs 312 on each feeding group 31, and the feeding discs 312 on two adjacent feeding groups 31 are arranged alternately.

[0035] The axis of the feeding roller 311 is perpendicular to the direction of straw movement, ensuring that the feeding disc 312 exerts a lateral pushing force on the straw, preventing straw deviation, and ensuring that the straw receives a uniform pushing force during movement. At the same time, the staggered feeding discs 312 can better break up straw clumps and improve the impurity separation effect. The existence of the set gap allows some impurities to fall directly through the gap, reducing the burden on subsequent separation.

[0036] The frame 32 is a bottomless U-shaped structure with its opening facing the direction of straw movement. The two ends of the feeding roller 311 are rotatably mounted on the side frame of the frame 32. This structure allows impurities to pass directly through the frame 32 and fall onto the vibrating screen 2 during the feeding process, preventing impurities from accumulating inside the frame 32.

[0037] like Figure 8 As shown, support rods 11 are provided on both sides of the frame 1, and the two side frames of the frame 32 are respectively installed on the support rods 11 on both sides of the frame 1. The support rods 11 fix the frame 32 to the frame 1, making the connection between the rolling feeding mechanism 3 and the frame 1 more stable and ensuring the stability of the equipment during operation.

[0038] The feeding roller 311 is provided with a keyway, and the feeding disc 312 is mounted on the keyway of the feeding roller 311 via a key. The feeding disc 312 is connected to the feeding roller 311 via a key, and the key engagement achieves circumferential fixation, preventing the feeding disc 312 from slipping relative to the feeding roller 311. The keyway structure facilitates quick disassembly and assembly of the feeding disc 312, and facilitates maintenance or replacement of worn parts.

[0039] The rolling feeding mechanism 3 also includes a drive mechanism 33, which includes a motor, a V-belt and a transmission chain. Each feeding roller 311 is equipped with a sprocket, and one of the feeding rollers 311 is also equipped with a pulley. The motor is connected to the pulley via the V-belt, and the sprocket on the feeding roller 311 is connected via the transmission chain.

[0040] The motor drives the pulley via a V-belt, which in turn links all the feeding rollers 311 via a chain drive. This ensures that multiple sets of feeding rollers 311 rotate synchronously, guaranteeing that the straw receives uniform feeding force on the rolling feeding mechanism 3, thus improving separation efficiency. Simultaneously, the motor speed can be adjusted according to actual needs to adapt to the separation requirements of different straw quantities and impurity contents.

[0041] Both the rolling feeding mechanism 3 and the vibrating screen 2 are arranged at an angle, with the rear end of the rolling feeding mechanism 3 and the vibrating screen 2 lower than the front end along the direction of straw movement. This inclined arrangement utilizes gravity, allowing the straw to move forward more smoothly on the rolling feeding mechanism 3 and the vibrating screen 2, reducing power consumption, and also facilitating the separation and discharge of impurities, thus improving the separation effect.

[0042] The vibrating screen 2 has two layers of screens, with the upper screen being shorter than the lower screen, and the tail end of the upper screen located above the lower screen. The upper screen receives impurities falling from the rolling feeding mechanism 3 for preliminary screening; the lower screen extends the screening path for secondary processing of missed impurities. The double-layer structure achieves graded screening of impurities, reduces the processing volume of the cyclone separator 5, and avoids excessive equipment size due to an excessively long single-layer screen.

[0043] like Figure 1 , Figure 9 As shown, the air separator also includes a blower 4, which has two air inlets on its bottom side, located on the upper side of the tail ends of the upper and lower sieves respectively.

[0044] The air separator also includes a cyclone separator 5, which is connected to the air outlet of the blower 4 via a pipe. The cyclone separator 5 further separates straw from impurities such as dust. After the mixture sucked out by the blower 4 enters the cyclone separator 5, the heavier straw will be discharged from the outlet at the bottom of the cyclone separator 5, while the lighter dust and other impurities will be discharged from the air outlet of the cyclone separator 5, achieving a more efficient separation effect and improving the purity of the straw.

[0045] Work process:

[0046] After the straw is placed into the upper rolling feeding mechanism 3, the outer ring of each feeding disc 312 of the rolling feeding mechanism 3 is serrated, which moves the straw forward. Due to the movement of the feeding discs 312, the straw can move forward quickly. Due to the movement of the teeth, the clumps of straw are broken up. Because there are large gaps between the feeding discs 312, as the straw is continuously moved forward, some dust, small pieces of sand and gravel mixed in with the straw, due to their higher specific gravity, will fall into the vibrating screen 2 below through the gaps. After a certain distance of movement, the impurity content is reduced. Since most of the straw is conveyed forward by the upper feeding rollers 311 group and a small part is conveyed by the vibrating screen 2, the conveying efficiency is greatly improved. Because the outer ring of the feeding discs 312 is a toothed structure, while moving the straw forward, it also breaks up the straw clumps. After the straw clumps are broken up, the dust and other impurities wrapped inside are easily separated and removed.

[0047] Although the specific embodiments of the present utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present utility model. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solution of the present utility model are still within the scope of protection of the present utility model.

Claims

1. An air separator for separating straw from impurities, characterized in that The invention relates to a straw wind selection machine, which comprises: a frame, a vibrating screen and a rolling raking mechanism; the vibrating screen and the rolling raking mechanism are both mounted on the frame, the length of the rolling raking mechanism is shorter than that of the vibrating screen, and the tail end of the rolling raking mechanism is located on the upper side of the vibrating screen; the rolling raking mechanism comprises a frame and a plurality of raking groups, each raking group comprises a raking roller and a plurality of raking discs, the two ends of the raking roller are rotatably mounted on the frame, the raking discs are mounted on the raking roller and arranged along the axial direction of the raking roller, and the outer periphery of each raking disc is provided with sawteeth.

2. An aspirator for separating straw impurities as claimed in claim 1, wherein, The axis of the raking roller is perpendicular to the moving direction of the straw, and each raking group has a set gap between two adjacent raking discs, and the raking discs of adjacent raking groups are arranged in a staggered manner.

3. An aspirator for separating straw impurities as claimed in claim 1, wherein, The frame is a U-shaped bottomless structure, the opening of the frame faces the moving direction of the straw, and the two ends of the raking roller are rotatably mounted on the side frames of the frame.

4. An aspirator for separating straw from impurities as claimed in claim 3 wherein, The frame is a U-shaped bottomless structure, the opening of the frame faces the moving direction of the straw, and the two ends of the raking roller are rotatably mounted on the side frames of the frame.

5. An aspirator for separating straw impurities as claimed in claim 1, wherein, The frame is a U-shaped bottomless structure, the opening of the frame faces the moving direction of the straw, and the two ends of the raking roller are rotatably mounted on the side frames of the frame.

6. An aspirator for separating straw from impurities as claimed in claim 1 wherein, The raking roller is provided with a key groove, and the raking disc is mounted on the key groove of the raking roller through a key.

7. An aspirator for separating straw from impurities as claimed in claim 1 wherein, The rolling raking mechanism further comprises a driving mechanism, the driving mechanism comprises a motor, a triangular belt and a transmission chain, each raking roller is provided with a sprocket, and one of the raking rollers is further provided with a pulley, the motor is connected with the pulley through the triangular belt, and the sprockets of the raking rollers are connected through the transmission chain.

8. An aspirator for separating straw from impurities as claimed in claim 1 wherein, The rolling raking mechanism and the vibrating screen are both arranged in an inclined manner, and the rear end of the rolling raking mechanism and the vibrating screen is lower than the front end along the moving direction of the straw.

9. An aspirator for separating straw from impurities as claimed in claim 8, wherein, The vibrating screen has two layers of screens, the length of the upper layer of screens is shorter than that of the lower layer of screens, and the tail end of the upper layer of screens is located on the upper side of the lower layer of screens.

10. The aspirator for separating straw impurities according to claim 9, characterized in that, The wind selection machine further comprises a fan, the bottom side of the fan is provided with two air suction ports, and the two air suction ports are located on the upper side of the tail ends of the two layers of screens. The wind selection machine further comprises a Shackle, which is connected with the air outlet of the fan through a pipeline.

Images