Solid-liquid mixture particle screening, grading and applying device

Abstract

The invention relates to a solid-liquid mixture particle screening, grading and applying device, and belongs to the technical field of soil treatment. The device comprises a screening box body with an inlet and an outlet, multiple stages of screening mechanisms are sequentially arranged in the box body, and each stage comprises an inclined screening plate and a driving assembly; the sieve plate is linked with the swing connecting rod through the eccentric wheel to achieve digging, transporting and throwing actions, the sizes of meshes are gradually reduced to separate particles with different particle sizes, and oversize materials are conveyed to the independent applying and scattering openings through the corresponding screw rod bins. In the working process of the device, small particles preferentially improve the soil through bottom layer screening, and large particles enhance the wind and sand resistance through the surface application layer, so that the soil fertility improvement and sand stabilization effects are synchronously achieved. Through the optimal design of the swing path of the sieve plate and the precise material conveying of the screw bin, the problem that a solid-liquid mixture is difficult to layer and cover in desertification control is solved, the sorting efficiency and the spreading uniformity are improved, and the device has the characteristics of being compact in structure, reliable in driving and high in applicability, and is suitable for large-scale control of desertification and saline-alkali soil.

Description

Technical Field

[0001] The present invention relates to a screening and grading spreading device, and particularly to a solid-liquid mixture particle screening and grading spreading device. Background Art

[0002] In the technology of using coal gangue to control deserts and saline-alkali lands, the coal gangue is crushed to form a solid-liquid mixture, which is transported to the area to be treated and then spread on the deserts and saline-alkali lands to improve the soil fertility, aeration and water permeability.

[0003] During treatment, the small particle mixture can be spread first, and then solid-liquid mixtures with larger particles are successively used for covering. At this time, the larger particles will be on the surface, playing a role in wind prevention and sand fixation, and effectively promoting the retention of the solid-liquid mixture on the desert.

[0004] Therefore, those skilled in the art are committed to developing a solid-liquid mixture particle screening and grading spreading device. Summary of the Invention

[0005] To achieve the above object, the present invention provides a solid-liquid mixture particle screening and grading spreading device, comprising:

[0006] A screening box body, with a material inlet and an outlet provided at both ends respectively;

[0007] A multi-stage series screening mechanism, which is sequentially arranged in the screening box body along the material flow direction, and each stage of the screening mechanism includes:

[0008] An inclined sieve plate with a predetermined mesh size, and its installation angle is inclined towards the outlet direction;

[0009] A driving assembly, including an eccentric wheel group connected to a driving motor and a swing link mechanism connecting the sieve plate and the eccentric wheel. The swing link is provided with an extending chute and a sliding pin shaft that can move along the chute, and the swing axis of the sieve plate is changed by adjusting the fixed position of the sliding pin shaft in the chute;

[0010] Wherein, the mesh sizes of the sieve plates in the multi-stage screening mechanism are set to decrease gradually along the material flow direction, and are driven by the corresponding driving assemblies to generate periodic swings, so as to realize the step-by-step screening and directional transportation of the materials;

[0011] A multi-stage screw bin, with each stage of the screening mechanism correspondingly connected to a screw bin. The inlet of the screw bin is docked with the discharging end of the sieve plate, and each stage of the screw bin is provided with an independent spreading port;

[0012] Wherein, the driving motor drives the eccentric wheel to drive the sieve plate to swing, so that the sieve plate sequentially performs actions of scooping, transporting and spreading.

[0013] Further, the sliding pin shaft is located on the adjusting plate. The screw motor can make the sliding pin shaft of the adjusting plate slide up and down in the chute of the swing link rod, thereby adjusting the swing axis of the sieve plate.

[0014] Further, the swing trajectory of the sieve plate includes three stages executed in sequence: the digging stage, where the digging end of the sieve plate descends to the bottom of the screening box to collect the material to be processed; the lifting stage, where the sieve plate is tilted and lifted to push the materials on the sieve towards the screw bin; the discharging stage, where the discharging end of the sieve plate swings above the feeding port of the screw bin to complete the transfer of the materials on the sieve.

[0015] Further, the drive motor drives each eccentric wheel group through a synchronous belt.

[0016] Further, a recess is correspondingly provided at the bottom of the screening box at the digging position.

[0017] Further, a rotating screw is provided in the screw bin, and the solid-liquid mixture is evenly conveyed to the corresponding spreading port through the rotation of the screw.

[0018] Further, the sieve plate is inclined towards the outlet direction, and the inclination angle is 20 - 45°.

[0019] Through the design of the multi-stage series screening mechanism and the dynamically swinging sieve plate, the present invention realizes the efficient grading screening and precise spreading of solid-liquid mixture particles: in the continuous actions of digging, transporting, and spreading of the sieve plate, particles of different particle sizes are gradually separated, and are guided to the corresponding spreading ports through independent screw bins, ensuring that fine particles preferentially improve soil fertility, and large particles are covered on the surface to enhance the windbreak and sand fixation effect. The precise control of the sieve plate swing trajectory and the adjustability of the drive assembly further improve the screening efficiency and reliability. At the same time, the cooperation between the inclination angle of the sieve plate and the recess of the box reduces material residue. This device not only solves the problem of layered covering of solid-liquid mixtures in sand control, but also significantly improves the material utilization rate through automated sorting and spreading, providing a compact and adaptable solution for desert and saline-alkali land treatment.

[0020] The following will further illustrate the concept, specific structure, and technical effects generated by the present invention in conjunction with the drawings to fully understand the purpose, features, and effects of the present invention. Description of the Drawings

[0021] Figure 1 is a perspective view of the first perspective of the solid-liquid mixture particle screening, grading, and spreading device in a preferred embodiment of the present invention;

[0022] Figure 2 is Figure 1 the perspective view of the second perspective of the solid-liquid mixture particle screening, grading, and spreading device in

[0023] Figure 3 isFigure 1 Stereogram of a screening mechanism in

[0024] Figure 4 is Figure 1 Side view of the solid-liquid mixture particle screening, grading and spreading device in

[0025] Figure 5 is Figure 1 Side view of the solid-liquid mixture particle screening, grading and spreading device in the transportation state in

[0026] Figure 6 is Figure 1 Side view of the solid-liquid mixture particle screening, grading and spreading device in the spreading state in Specific embodiments

[0027] The following introduces multiple preferred embodiments of the present invention with reference to the accompanying drawings of the specification, making its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned in the text.

[0028] In the drawings, components with the same structure are denoted by the same numerical reference signs, and components with similar structures or functions everywhere are denoted by similar numerical reference signs. The size and thickness of each component shown in the drawings are arbitrarily shown, and the present invention does not limit the size and thickness of each component. To make the illustration clearer, the thickness of some parts in the drawings is appropriately exaggerated.

[0029] As shown in Figure 1, the solid-liquid mixture particle screening, grading and spreading device in a preferred embodiment of the present invention includes a screening box body 1 with an inlet 2 and an outlet 3. Between the inlet 2 and the outlet 3 of the screening box body 1, a multi-stage screening mechanism and corresponding screw bins are sequentially arranged. In Figure 1 the embodiment in

[0030] As Figure 2 shown, the oversize material of the first-stage screening structure 10 is output from the first spreading port 51 through the first screw bin 5; the oversize material of the second-stage screening structure 20 is output from the second spreading port 61 through the second screw bin 6; the oversize material of the third-stage screening structure 30 is output from the third spreading port 71 through the third screw bin 7.

[0031] Next, taking Figure 3 the first-stage screening structure 10 shown as an example, the screening mechanism will be described. As Figure 3As shown in the figure, the first-stage screening structure 10 includes a sieve plate 11 that is inclined towards the outlet direction inside the screening box 1. The sieve plate 11 is provided with mesh holes 12. The sieve plate 11 is installed on an eccentric wheel 14 through a swing link 13. One end of each swing link 13 is pivotally connected to the sieve plate 11, and the other end is pivotally connected to a rotating pin shaft 15 on the eccentric wheel 14. A sliding groove 131 is formed in each swing link 13. A sliding pin shaft 181 on the adjusting plate 18 is fitted into the sliding groove 131 of the swing link 13. The driving motor 16 drives the rotation of each eccentric wheel 15 through a synchronous belt 17, causing each swing link 13 to swing with the sliding pin shaft 181 as the swing axis, driving the sieve plate 11 to swing. The swing trajectory of the sieve plate 11 is as Figures 4 - 6 shown, including three states: scooping, transporting, and sprinkling. In the scooping state as shown in Figure 4 the figure, the sieve plate 11 scoops down the solid-liquid mixture, and at the same time, the lower end of the sieve plate enters a recess 4 provided on the bottom plate of the screening box 1. In the transporting state as shown in Figure 5 the figure, the sieve plate 11 is lifted upwards to transport the oversize materials to the first screw bin 5. In the sprinkling state as shown in Figure 6 the figure, the sieve plate 11 sprinkles the oversize materials through the opening 51 of the first screw bin 5 into the first screw bin 5. The first screw bin 5 outputs the incoming solid-liquid mixture from the first spreading port 51 through a screw. The driving motor 16, the synchronous belt 17, and each eccentric wheel 15 are installed on the same frame. At the same time, the adjusting plate 18 is also installed on this frame through a screw motor 19 and a guide post 191. By the screw motor 19 and the guide post 191, the sliding pin shaft 181 of the adjusting plate 18 can slide up and down in the sliding groove 131 of the swing link 13, thereby adjusting the swing axis of the sieve plate. The change of the swing axis will ultimately cause a change in the amplitude of the sieve plate. Thus, the content of solid particles screened by the sieve plate is changed.

[0032] Except for the difference in the size of the sieve plate hole mesh, the settings of other mechanisms in each stage of the screening mechanism are the same. In this embodiment, the holes of the first-stage sieve plate 11 are larger than those of the second-stage sieve plate 12, and the holes of the second-stage sieve plate 12 are larger than those of the third-stage sieve plate 13.

[0033] Through the multi-stage series screening mechanism and the design of a dynamically swinging sieve plate, this device achieves efficient classification screening and precise spreading of solid-liquid mixture particles: during the continuous actions of digging, transporting, and spreading of the sieve plate, particles of different particle sizes are gradually separated, and through the independent screw bins, they are guided to the corresponding spreading ports, ensuring that fine particles preferentially improve soil fertility, while large particles are covered on the surface to enhance the windbreak and sand fixation effect. The precise control of the sieve plate swing trajectory and the adjustability of the drive assembly further improve the screening efficiency and reliability. At the same time, the cooperation between the sieve plate tilt angle and the concave part of the box reduces material residue. This device not only solves the problem of layered coverage of solid-liquid mixtures in sand control but also significantly improves material utilization through automated sorting and spreading, providing a solution with a compact structure and strong adaptability for desert and saline-alkali land treatment.

[0034] The preferred specific embodiments of the present invention have been described in detail above. It should be understood that those of ordinary skill in the art can make many modifications and variations based on the concept of the present invention without creative work. Therefore, all technical solutions that can be obtained by those skilled in the art in the technical field based on the concept of the present invention through logical analysis, reasoning, or limited experiments on the basis of the prior art should be within the protection scope determined by the claims.

Claims

1. A solid-liquid mixture particle screening and grading spreading device, characterized in that: include: The screening box has a material inlet and an outlet at both ends; The multi-stage screening mechanism is arranged in series in the screening box in sequence along the material flow direction, and each stage of the screening mechanism comprises: an inclined screen plate with a predetermined mesh size, the installation angle of which is inclined toward the outlet direction; A driving assembly, comprising an eccentric wheel group connected to a driving motor, and a swing connecting rod mechanism connecting the screen plate and the eccentric wheel, wherein the swing connecting rod is provided with an extended slide groove and a sliding pin shaft movable along the slide groove, and the swing axis of the screen plate is changed by adjusting the fixed position of the sliding pin shaft in the slide groove; The mesh size of the sieve plates in the multi-stage screening mechanism is set to decrease step by step along the material flow direction, and is driven by the corresponding driving components to produce periodic swings, thereby realizing step-by-step screening and directional transportation of materials; Multi-stage screw bin, each level of screening mechanism is connected to a corresponding screw bin, the inlet of the screw bin is connected to the discharge end of the screen plate, and each level of the screw bin is provided with an independent spreading port; The driving motor drives the eccentric wheel to drive the screen plate to swing, so that the screen plate performs the digging, transportation and throwing actions in sequence.

2. The solid-liquid mixture particle screening and grading spreading device according to claim 1, wherein: The sliding pin shaft is located on the adjusting plate, and the sliding pin shaft of the adjusting plate can slide up and down in the sliding groove of the swing connecting rod through the screw motor, so as to adjust the swing axis of the screen plate.

3. The solid-liquid mixture particle screening and grading spreading device according to claim 1, wherein: The swing trajectory of the screen plate is set to include three stages performed in sequence: During the digging stage, the digging end of the screen plate reaches down to the bottom of the screening box to collect the material to be processed; During the lifting stage, the screen plate is tilted and lifted to push the material on the screen to move toward the screw bin; During the unloading stage, the unloading end of the screen plate swings to above the screw bin feed port to complete the transfer of the screened material.

4. The solid-liquid mixture particle screening and grading spreading device according to claim 1, wherein: The driving motor drives each eccentric wheel group through a synchronous belt.

5. The solid-liquid mixture particle screening and grading spreading device according to claim 1, wherein: The bottom of the screening box is provided with a recess corresponding to the digging position.

6. The solid-liquid mixture particle screening and grading spreading device according to claim 1, wherein: A rotating screw is arranged in the screw bin, and the solid-liquid mixture is uniformly transported to the corresponding spreading port through the rotation of the screw.

7. The solid-liquid mixture particle screening and grading spreading device according to claim 1, wherein: The sieve plate is inclined toward the outlet direction, and the inclination angle is 20-45°.

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