Straw pasture coarse screening device
By designing a double-layer straw forage coarse screening device, the step-by-step conveying of material transfer leaves and material transfer teeth is solved, and the existing drum screen is difficult to completely separate straw forage from dust, achieving efficient and ideal screening effect.
Patent Information
- Application Number
- CN202421661367.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-15
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-15
AI Technical Summary
It is difficult to completely separate straw grass from dust in existing roller screens, resulting in unsatisfactory screening, affecting subsequent use, and low working efficiency.
A double-layer rack-body straw forage coarse screen device is designed, using a coarse screen of the upper material transfer leaf and a fine screen of the lower material transfer teeth. Through the step-by-step conveying of the material transfer leaf and the material transfer teeth, the straw forage and dust are completely separated.
The complete separation of straw grass and dust has been achieved, the screening effect is ideal, and the working efficiency is high, which avoids the ash after the straw grass is sieved, affecting its use as fuel and feed.
Smart Images
Figure CN222830066U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a straw and forage coarse screening device, belonging to the technical field of agricultural machinery. Background Art
[0002] The existing device for separating straw and forage from dust is a drum screen. However, it is difficult for the drum screen to effectively and thoroughly separate the straw and forage from the dust during operation. The straw and forage and the dust after screening are still stuck together, making it difficult to screen them thoroughly, resulting in an unsatisfactory screening effect for the straw and forage, affecting the subsequent use of the straw and forage. At the same time, the working efficiency of the drum screen is also low. Utility Model Content
[0003] In order to overcome the deficiencies of the prior art, the utility model provides a straw forage coarse screening device, which can effectively screen the straw forage and dust, and completely separate the straw forage and dust through the coarse screening of the upper material transfer leaves and the fine screening of the lower material shifting teeth.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a straw and forage coarse screening device, including a double-layer frame, in which a plurality of evenly spaced shafts I are installed in the upper frame of the double-layer frame, the shaft I is arranged horizontally and longitudinally, and both ends of the shaft I are respectively fixedly connected to a circular support plate; between the two support plates, a plurality of through-length transfer leaves are fixed in the circumferential direction of the shaft I, and the two ends of the transfer leaves are respectively fixedly connected to the support plates on their respective sides; the transfer leaves include a vertical plate and an arc plate, one end of the vertical plate away from the shaft I is fixedly connected to the other end of the arc plate away from the shaft I, and the other end of the vertical plate and the other end of the arc plate are both fixedly connected to the shaft I, the interior of the transfer leaves is a cavity, and the plurality of transfer leaves on the shaft I completely cover the shaft I; the double-layer frame The lower layer is equipped with several shafts II with even intervals, which are arranged horizontally and longitudinally. Several groups of evenly spaced feeding teeth are fixedly connected to shaft II, and each group of feeding teeth includes several spike teeth, which are evenly spaced and fixed in the circumferential direction of shaft II; between every two rows of spike teeth in the circumferential direction, several through-length connecting plates are fixed to shaft II, and several evenly spaced connecting holes are provided in the connecting plates, which are connected to the cleaning rubber plates; below the feeding teeth, several sieve plates are provided in the lower frame of the double-layer frame, and a sieve plate is correspondingly arranged under each shaft II, and several vertical adjustment bolts are provided between the connecting beam of the lower frame of the double-layer frame and each sieve plate, and the sieve plates are connected to the adjustment bolts; the sieve plates are wavy in shape, and several sieve holes are provided on the sieve plates.
[0005] The beneficial effects of the utility model are as follows: the utility model can effectively separate dust and soil blocks in the straw, firstly, the relatively long straw and forage are thrown and transferred step by step by the upper transfer blades, and then the relatively short straw and forage that fall are thrown and transferred step by step by the lower material-selecting teeth, in the step-by-step throwing and transferring process of the upper and lower layers, the straw and forage will be automatically scattered, the fallen dust and soil blocks are screened out by the bottom sieve plate, and the remaining straw and forage are transferred step by step; in this way, the straw and forage are completely separated from the dust through the coarse screen of the upper layer and the fine screen of the lower layer, the screening effect is very ideal, the working efficiency is high, and after the dust in the straw and forage is screened out, the straw and forage will not generate dust, and the use of the straw and forage as fuel and feed will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS
[0006] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.
[0007] Figure 1 It is a structural schematic diagram of the utility model.
[0008] Figure 2 It is a top view schematic diagram of the material picking tooth of the utility model.
[0009] Figure 3 It is a top view schematic diagram of the material transfer blade of the utility model.
[0010] Figure 4 It is a top view schematic diagram of the screen plate of the utility model.
[0011] Numbers in the figure:
[0012] 1. Double-layer frame, 2. Axis I, 3. Support plate, 4. Transfer blade, 5. Vertical plate, 6. Arc plate, 7. Axis II, 8. Material shifting teeth, 9. Nail teeth, 10. Screen plate, 11. Screen holes, 12. Connecting plate, 13. Connecting holes, 14. Screen cleaning rubber plate, 15. Adjusting bolts. DETAILED DESCRIPTION
[0013] like Figure 1As shown in FIG. 4 , a straw and forage coarse screening device comprises a double-layer frame 1, in which a plurality of evenly spaced shafts Ⅰ2 are installed in the upper layer of the double-layer frame 1, and the shafts Ⅰ2 are arranged horizontally and longitudinally, and a circular support plate 3 is fixedly connected to the two ends of the shaft Ⅰ2 respectively; between the two support plates 3, a plurality of through-length transfer leaves 4 are fixed in the circumferential direction of the shaft Ⅰ2, and the two ends of the transfer leaves 4 are fixedly connected to the support plates 3 on their respective sides respectively; the transfer leaves 4 comprise a vertical plate 5 and an arc plate 6, and the end of the vertical plate 5 away from the shaft Ⅰ2 is fixedly connected to the end of the arc plate 6 away from the shaft Ⅰ2, and the other end of the vertical plate 5 and the other end of the arc plate 6 are fixedly connected to the shaft Ⅰ2, and the interior of the transfer leaves 4 is a cavity, and the plurality of transfer leaves 4 on the shaft Ⅰ2 completely cover the shaft Ⅰ2; the lower layer of the double-layer frame 1 is installed with a plurality of evenly spaced shafts Ⅱ7 , shaft II 7 is arranged horizontally and longitudinally, and a plurality of groups of evenly spaced feeding teeth 8 are fixedly connected to shaft II 7, and each group of feeding teeth 8 includes a plurality of spike teeth 9, and the spike teeth 9 are evenly spaced and fixed in the circumferential direction of shaft II 7; between every two rows of spike teeth 9 in the circumferential direction, a plurality of through-length connecting plates 12 are fixed to shaft II 7, and a plurality of evenly spaced connecting holes 13 are provided in the connecting plates 12, and the connecting holes 13 are connected to the cleaning rubber plate 14; below the feeding teeth 8, a plurality of sieve plates 10 are provided in the lower frame of the double-layer frame 1, and a sieve plate 10 is correspondingly arranged below each shaft II 7, and a plurality of vertical adjustment bolts 15 are provided between the connecting beam of the lower frame of the double-layer frame 1 and each sieve plate 10, and the sieve plate 10 is connected to the adjustment bolts 15; the sieve plate 10 is in a wave shape, and a plurality of sieve holes 11 are provided on the sieve plate 10.
[0014] During use, shaft Ⅰ2 and shaft Ⅱ7 are driven by chains to rotate under the support of bearings. Shaft Ⅰ2 drives the transfer blade 4 to rotate clockwise, and shaft Ⅱ7 drives the material-selecting tooth 8 to rotate counterclockwise. After the straw and forage enter the upper frame of the double-layer frame 1, the transfer blade 4 throws the relatively long straw and forage step by step. The straw and forage automatically scatter after being thrown up, and the relatively short straw and forage, soil and sand fall down. 1, the rotating material-shifting teeth 8 will throw and transfer the relatively short straw and forage step by step; and the straw and forage falling on the wavy screen plate 10 will be lifted up by the centrifugal force of the material-shifting teeth 8 for step-by-step throwing and transfer, and the dust will fall directly from the sieve holes 11 on the sieve plate 10; in this way, the straw and forage will be coarsely screened by the upper material-transfer blades 4 and finely screened by the lower material-shifting teeth 8, so that the straw and forage can be cleaned more thoroughly and efficiently.
[0015] Several material transfer blades 4 on shaft I2 completely cover shaft I2, so that the rope in the straw and forage will not be entangled on shaft I2, avoiding the increase of resistance of shaft I2; the connecting hole 13 on the connecting plate 12 is used to install the cleaning rubber plate 14, and the cleaning rubber plate 14 is in contact with the screen plate 10 to make the cleaning more thorough. It is selected according to the cleaning situation to further improve the effect of fine screening. The rotation diameter of the cleaning rubber plate 14 is larger than the rotation diameter of the material picking tooth 8; the screen plate 10 can be adjusted in height by adjusting the bolt 15 in the lower frame of the double-layer frame 1, which is used to adjust the gap between the cleaning rubber plate 14 and the screen plate 10, so that the soil particles in the straw and forage are in contact with the screen plate 10 and rub off the soil particles.
Claims
1. A straw and forage coarse screening device, comprising a double-layer frame (1), characterized in that: The upper frame of the double-layer frame (1) is provided with a plurality of shafts I (2) at even intervals, the shafts I (2) being arranged horizontally and longitudinally, and the two ends of the shafts I (2) are respectively fixedly connected to a circular support plate (3); between the two support plates (3), a plurality of through-length material transfer blades (4) are fixedly connected in the circumferential direction of the shaft I (2), and the two ends of the material transfer blades (4) are respectively fixedly connected to the support plates (3) on their respective sides; the material transfer blades (4) include a vertical plate (5) and an arc plate (6), one end of the vertical plate (5) away from the shaft I (2) and one end of the arc plate (6) away from the shaft I (2) are fixedly connected, and the other end of the vertical plate (5) and the other end of the arc plate (6) are both connected to the shaft I (2) is fixedly connected, and the interior of the material transfer blade (4) is a cavity; the lower layer of the double-layer frame (1) is equipped with a plurality of shafts II (7) with uniform intervals, and the shafts II (7) are arranged horizontally and longitudinally. A plurality of groups of evenly spaced material-selecting teeth (8) are fixedly connected to the shafts II (7), and each group of material-selecting teeth (8) includes a plurality of spike teeth (9), and the spike teeth (9) are evenly spaced and fixed in the circumferential direction of the shafts II (7); below the material-selecting teeth (8), a plurality of sieve plates (10) are arranged in the lower layer of the double-layer frame (1), and a sieve plate (10) is correspondingly arranged below each shaft II (7), and the sieve plate (10) is in a wave shape, and a plurality of sieve holes (11) are arranged on the sieve plate (10).
2. A straw and forage coarse screening device according to claim 1, characterized in that: The plurality of transfer blades (4) on shaft I (2) completely cover shaft I (2).
3. A straw and forage coarse screening device according to claim 1, characterized in that: Between every two rows of nail teeth (9) in the circumferential direction, a plurality of through-length connecting plates (12) are fixed to the shaft II (7), and a plurality of evenly spaced connecting holes (13) are provided in the connecting plates (12), and the connecting holes (13) are connected to the cleaning rubber plates (14).
4. The straw and forage coarse screening device according to claim 1, characterized in that: A plurality of vertical adjustment bolts (15) are provided between the connection beam of the lower frame of the double-layer frame (1) and each sieve plate (10), and the sieve plate (10) is connected to the adjustment bolts (15).