Spiral sieving device

Abstract

The utility model provides a spiral sieving device, which belongs to the technical field of raw material sieving and comprises a sieving barrel wall provided with at least one raw material port. The front end part is fixedly connected with the sieving barrel wall; the screw mechanism is arranged in the sieving barrel wall, one end of the screw mechanism is rotationally connected with the front end part, and a plurality of through holes are formed in the screw mechanism; the rear end cover is fixedly connected with the other end of the sieving barrel wall, and at least one sieving hole is formed in the rear end cover; the collecting box is connected with the screw mechanism and drives the screw mechanism to rotate, and the screw mechanism drives the raw materials to ascend or descend. The screening device solves the technical problems that raw materials in an existing screening device are prone to agglomeration or caking, and a large amount of dust is generated in the screening process.

Description

Technical Field

[0001] This utility model belongs to the field of raw material screening technology, and in particular relates to a spiral screening device. Background Technology

[0002] In many industrial production processes, powdered and granular raw materials are common basic raw materials. However, during transportation and storage, these raw materials often clump or agglomerate due to mutual compression or prolonged storage. This phenomenon not only affects the quality of the raw materials but may also disrupt subsequent processes. To ensure the uniformity and quality of raw materials in production, sieving is usually necessary to remove clumps or agglomerates.

[0003] Traditional sieving methods typically involve manual operation, where raw materials are poured into a sieving device for screening, followed by secondary collection of the screened material. However, this method presents several problems. First, it generates a significant amount of dust, especially for powdered and granular raw materials, as this dust easily disperses into the air. This dust not only poses a threat to the health of operators but can also negatively impact the surrounding environment. Furthermore, traditional sieving processes are inefficient, requiring multiple manual operations and increasing labor intensity.

[0004] Therefore, the main problems with existing technologies in raw material sieving are that raw materials tend to clump or agglomerate, and a large amount of dust is generated during the sieving process, which not only affects workers' health but also pollutes the environment. Improving the sieving process, reducing dust generation, and increasing sieving efficiency have become urgent problems to be solved in related fields. Utility Model Content

[0005] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.

[0006] This invention proposes a spiral sieving device that solves the technical problems of existing sieving devices, such as raw materials easily clumping or agglomerating, generating dust pollution, low screening efficiency, and inconvenient maintenance. This invention features a fully enclosed design, high dustproof efficiency, automatic screening, easy maintenance, and strong adaptability, effectively separating clumps or agglomerated materials and improving screening efficiency.

[0007] This utility model discloses a spiral sieving device, comprising: a sieving cylinder wall with at least one raw material inlet for raw material inflow / outflow; a front end fixedly connected to one end of the sieving cylinder wall to close one end of the sieving cylinder wall; a screw mechanism disposed inside the sieving cylinder wall, one end of which is rotatably connected to the front end, the screw mechanism having multiple through holes for filtering raw materials through the through holes; a rear end cover fixedly connected to the other end of the sieving cylinder wall, the rear end cover having at least one sieving hole in the radial direction for sieving clumps or agglomerates; and a collection box, the screw mechanism passing through the rear end cover and connected to the collection box, the collection box abutting against the rear end cover, the collection box driving the screw mechanism to rotate clockwise / counterclockwise, and the screw mechanism driving the raw material to rise / fall.

[0008] In some embodiments, the screw mechanism includes: a screw, one end of which is rotatably connected to the front end and the other end of which is detachably connected to the collection box; and helical blades, wound around the axial direction of the screw in an Archimedean spiral structure, for lifting / lowering the raw material to achieve multi-stage screening.

[0009] In some embodiments, the collection box has a receiving cavity, the opening of which is spanned by a crossbeam, which is connected to the screw mechanism.

[0010] In some embodiments, the crossbeam has a wedge-shaped structure, with one side being an inclined surface and the other side being a rectangular surface.

[0011] In some embodiments, the spiral sieve device further includes a bearing disposed between the front end and the screw mechanism to ensure smooth rotation of the screw mechanism.

[0012] In some embodiments, the collection box is transparent to allow operators to observe the collection of the clumps or lumps inside.

[0013] In some embodiments, the diameter of the sieve aperture is larger than the diameter of the through hole.

[0014] In some embodiments, the helical blade is provided with a plurality of the through holes.

[0015] In some embodiments, the screw mechanism is threadedly connected to the collection box.

[0016] In some embodiments, the surface of the spiral mechanism is provided with an anti-adhesion coating to reduce the adhesion of raw materials to the spiral mechanism.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model discloses a spiral sieving device. By connecting a collection box to a screw mechanism, the operator can control the rotation direction of the screw mechanism by rotating the collection box, thereby achieving clockwise or counterclockwise rotation of the raw material, further raising or lowering the material height, and increasing the flexibility of sieving. By setting up the screw mechanism, the raw material can be effectively lifted and lowered along the wall of the sieving cylinder, allowing the material to circulate between multiple through holes, separating clumps or agglomerates in the raw material through physical action. The rotation of the screw mechanism drives the movement of the raw material, improving the sieving speed and sieving effect, and avoiding the problem of insufficient sieving of raw materials in existing sieving equipment. At the same time, the through-hole design on the screw mechanism allows the raw material to pass smoothly, reducing accumulation and blockage during the sieving process, thereby improving screening efficiency.

[0019] 2. In this invention, the rear end cover is provided with radially oriented sieve holes. This design can effectively screen out clumps or agglomerates in the raw materials, ensuring uniform particle size of the final sieved material and improving sieve accuracy. Moreover, the diameters of the sieve holes and the through holes on the screw mechanism are different. Raw materials with particles meeting the requirements are filtered through the through holes on the screw mechanism, while clumps or agglomerates that do not meet the requirements rise to the rear end cover as the screw mechanism rotates, and are then collected into the collection box through the sieve holes at the rear end cover.

[0020] 3. This utility model, by setting a crossbeam on the collection box and setting the crossbeam in a wedge shape, not only serves to connect with the screw mechanism, but also transfers clumps or agglomerates to one side of the rectangular surface through the inclined surface, effectively preventing clumps or agglomerates from returning to the screw mechanism through the sieve holes, thus effectively improving the accuracy of sieving.

[0021] 4. This utility model ensures smooth rotation of the screw mechanism by installing a bearing between the screw mechanism and the front end, effectively reducing friction and wear during screw rotation, and improving the service life and operational stability of the equipment. The anti-adhesion coating on the screw surface further prevents raw materials from adhering to the screw surface during screening, maintaining the cleanliness of the spiral blades, improving screening efficiency, and reducing the frequency of equipment maintenance.

[0022] 5. In this utility model, the collection box is designed as a transparent structure, which makes it convenient for operators to monitor the screening of raw materials and the collection of clumps in real time, avoiding uneven screening or clogging caused by excessive accumulation.

[0023] 6. In this utility model, the collection box and the spiral mechanism are detachably connected, which facilitates the daily cleaning and maintenance of the equipment. Operators can quickly disassemble and clean the internal parts to ensure that the equipment remains in good condition during long-term operation, reduce downtime, and improve production efficiency. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0025] Figure 1 This is a cross-sectional view of the spiral screening device provided in an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the spiral sieve device provided in an embodiment of the present invention;

[0027] Figure 3 This is a partial structural schematic diagram of the spiral screening device provided in an embodiment of the present utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the collection box provided in an embodiment of the present utility model;

[0029] Figure 5 A cross-sectional view of the collection box provided in an embodiment of this utility model;

[0030] In the above figures: 1-screening cylinder wall; 101-raw material inlet; 2-front end; 3-screw mechanism; 301-screw; 302-spiral blade; 3021-through hole; 4-rear end cover; 401-screening hole; 5-collection box; 501-accommodating cavity; 502-crossbeam; 5021-inclined surface; 5022-rectangular surface; 6-bearing. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model.

[0032] This utility model provides a spiral screening device, see reference. Figures 1-5As shown, the spiral sieving device includes a sieving cylinder wall 1, a front end 2, a screw mechanism 3, a rear end cover 4, and a collection box 5. The sieving cylinder wall 1 has at least one raw material inlet 101 for raw material inlet / outlet. The front end 2 is fixedly connected to one end of the sieving cylinder wall 1 to close one end of the sieving cylinder wall 1. The screw mechanism 3 is located inside the sieving cylinder wall 1, and one end of it is rotatably connected to the front end 2. The screw mechanism 3 has multiple through holes 3021 for filtering raw materials through the through holes 3021. The rear end cover 4 is fixedly connected to the other end of the sieving cylinder wall 1. The rear end cover 4 has at least one sieving hole 401 in the radial direction for sieving clumps or agglomerates. The screw mechanism 3 passes through the rear end cover 4 and is connected to the collection box 5. The collection box 5 abuts against the rear end cover 4. The collection box 5 drives the screw mechanism 3 to rotate clockwise / counterclockwise, and the screw mechanism 3 drives the raw material to rise / fall. By connecting the collection box 5 to the screw mechanism 3, the operator can control the rotation direction of the screw mechanism 3 by rotating the collection box 5, thereby achieving clockwise or counterclockwise rotation of the raw material, further raising or lowering the height of the raw material, and increasing the flexibility of screening. By setting up the screw mechanism 3, the raw material can be effectively lifted and lowered along the screen cylinder wall 1, allowing the raw material to circulate among multiple through holes 3021, separating clumps or agglomerates in the raw material through physical action. The rotation of the screw mechanism 3 drives the movement of the raw material, improving the screening speed and screening effect, and avoiding the problem of insufficient screening of raw materials in existing screening equipment. The spiral blades 302 on the screw mechanism 3 lift or lower the raw material, causing it to move within the screen cylinder wall 1. Preliminary filtration is performed through the multiple through holes 3021 distributed on the screw mechanism 3; finer particles will pass through, while larger clumps or agglomerates will be screened radially through the screening holes 401 of the rear end cover 4 and enter the collection box 5.

[0033] In some embodiments, the sieve cylinder wall 1, front end 2, screw mechanism 3, rear end cover 4, and collection box 5 of this invention are combined to form a spiral sieve device. This device adopts a fully enclosed structure, with all parts sealed except for the raw material inlet 101. This effectively prevents dust leakage during the sieve process, thereby preventing secondary pollution, reducing environmental impact, and protecting the health of operators. Furthermore, the enclosed structure of the device ensures safety and reliability during operation.

[0034] In some embodiments, the front end portion 2 can be shaped as a hemisphere, which can improve the screening effect by cooperating with the overall structure of the screening device; however, the shape of the front end portion 2 is not limited to a hemisphere, and it can also be designed as other geometric shapes, such as cuboids or cubes, to adapt to the needs of different raw material containers. Regardless of the geometric shape used, as long as it can be placed smoothly in the container holding the raw material, the purpose of optimizing screening can be achieved.

[0035] In some embodiments, the screw mechanism 3 can be designed with different structural forms. For example, the length and diameter of the screw mechanism 3 can be adjusted according to different screening requirements, and the number and shape of the raw material inlets 101 can also be appropriately adjusted according to the production line requirements. In this invention, the raw material inlets 101 are triangular openings. Furthermore, the size of the sieve holes 401 on the rear cover 4 can be optimized according to the particle size of the raw material to improve the screening effect.

[0036] Furthermore, the screw mechanism 3 includes a screw 301 and a helical blade 302. One end of the screw 301 is rotatably connected to the front end 2, and the other end is detachably connected to the collection box 5. The helical blade 302 is wound around the axial direction of the screw 301, forming an Archimedean spiral structure, used to lift / lower the raw material to achieve multi-stage screening. The helical blade 302 of the screw mechanism 3 is designed in an Archimedean spiral shape to utilize the continuous lifting and lowering action of the helical blade 302 to evenly distribute the raw material within the screening cylinder for step-by-step screening. The raw material is driven to gradually rise or fall through the helical blade 302, and is filtered through the through-holes 3021 on the helical blade 302 at different screening stages, ultimately achieving the screening effect. The Archimedean spiral structure design of the helical blade 302 effectively increases screening efficiency, and through multi-stage screening, it can further separate fine particles and large materials. The detachable connection design between the screw 301 and the collection box 5 facilitates disassembly and cleaning of the equipment and makes maintenance easy.

[0037] In some embodiments, the structure of the spiral blades 302 can be adjusted according to the characteristics of different raw materials. For example, for heavier or denser materials, a denser spiral blade structure can be used to increase the screening pressure. The connection between the screw 301 and the collection box 5 can also adopt other connection methods, such as snap-fit ​​connection or quick-disassembly structure, to adapt to different usage scenarios.

[0038] Furthermore, the collection box 5 is provided with a receiving cavity 501, and a crossbeam 502 spans across the opening of the receiving cavity 501. The crossbeam 502 is connected to the screw mechanism 3. The receiving cavity 501 of the collection box 5 is designed to collect clumps or agglomerates after being screened by the screw mechanism 3. The crossbeam 502 spans across the opening of the receiving cavity 501, providing stable structural support and ensuring that the screw mechanism 3 maintains a fixed position and operates smoothly when rotating.

[0039] Furthermore, the crossbeam 502 has a wedge-shaped structure, with one side being an inclined surface 5021 and the other side being a rectangular surface 5022. The wedge-shaped design of the crossbeam 502 enhances the structural strength, allowing materials to slide along the inclined surface 5021, reducing direct impact on the screw mechanism 3, and preventing material accumulation. The wedge-shaped crossbeam 502 effectively avoids material accumulation or blockage during screening. The inclined surface 5021 not only allows for smoother material flow but also effectively prevents clumps or agglomerates from re-passing through the screen holes 401 back to the screw mechanism 3, effectively improving screening accuracy and efficiency.

[0040] Furthermore, the spiral screening device also includes a bearing 6, which is located between the front end 2 and the screw mechanism 3 to ensure the smooth rotation of the screw mechanism 3. The bearing 6, positioned between the front end 2 and the screw mechanism 3, reduces the friction generated during the rotation of the screw mechanism 3, ensuring stable and smooth rotation and maintaining the continuity and accuracy of the screening process. The introduction of the bearing 6 effectively reduces wear on the screw mechanism 3 during long-term operation, extending the service life of the device, and improving screening efficiency by reducing rotational resistance. Simultaneously, the bearing 6 ensures balanced rotation of the screw mechanism 3, preventing reduced screening efficiency or equipment damage due to imbalance.

[0041] Furthermore, the collection box 5 is transparent to allow operators to easily observe the collection of clumps or agglomerates within it. The transparent collection box 5 is designed to facilitate intuitive monitoring and control of the collection of clumps or agglomerates during the screening process, ensuring timely detection of abnormal materials or equipment malfunctions for rapid adjustments. This transparent design provides operators with convenient visualization, eliminating the need for frequent machine stops for inspection. This significantly improves the continuity and efficiency of the screening process, while also reducing downtime caused by equipment checks, thus enhancing the overall efficiency of the production line.

[0042] Furthermore, the diameter of the sieve hole 401 is larger than the diameter of the through hole 3021. The design of the sieve hole 401's diameter being larger than the through hole 3021 on the screw mechanism 3 aims to allow larger clumps or agglomerates to pass smoothly through the sieve hole 401 and be screened out, while smaller materials are further filtered and screened through the through hole 3021 on the spiral blade 302. This design can distinguish materials of different particle sizes, achieving the purpose of graded screening. By adjusting the size difference between the sieve hole 401 and the through hole 3021, the device can achieve a higher precision screening effect. The larger sieve hole 401 can effectively separate large pieces of material, while the smaller through hole 3021 ensures the screening of fine particles; the overall design improves screening efficiency and accuracy.

[0043] In some embodiments, the size of the sieve aperture 401 can be customized to meet the screening requirements of different raw materials. For certain special applications, it can be designed as an adjustable aperture or a replaceable screen structure can be adopted to cope with the diverse screening standards in different production needs.

[0044] Furthermore, the spiral blade 302 is provided with multiple through holes 3021. The purpose of having multiple through holes 3021 on the spiral blade 302 is to achieve preliminary screening of the material during the process of the spiral blade 302 propelling the raw material. Fine particles can directly pass through the through holes 3021 for filtration, while larger materials are retained on the spiral blade 302 for further screening. This design not only improves screening efficiency but also reduces the accumulation and buildup of material on the spiral blade 302, thus making the screening process smoother. The design of multiple through holes 3021 ensures multiple screenings of the raw material, making the screening process more refined and contributing to the achievement of multi-stage screening effects.

[0045] In some embodiments, the shape and size of the through-holes 3021 can be customized according to the characteristics of the material, such as using circular, elliptical, or other shaped through-hole structures to optimize the screening effect. Furthermore, the number and distribution of the through-holes 3021 can also be adjusted according to the screening efficiency requirements.

[0046] Furthermore, the screw mechanism 3 and the collection box 5 are connected by threads. The screw mechanism 3 and the collection box 5 are assembled via a threaded connection, a design that allows for quick installation and disassembly while ensuring connection stability. During operation, the rotation of the screw mechanism 3 drives the collection box 5, further propelling the material up or down. The threaded connection improves the operability and ease of maintenance of the equipment, especially when regular cleaning and component replacement are required, allowing for quick assembly and disassembly, saving time. In addition, the threaded connection ensures a stable connection between the screw mechanism 3 and the collection box 5, preventing loosening from affecting the normal operation of the equipment.

[0047] Furthermore, the surface of the screw mechanism 3 is provided with an anti-adhesion coating to reduce the adhesion of raw materials to the screw mechanism 3. The anti-adhesion coating is mainly used to prevent raw materials from adhering to the surface of the screw mechanism 3, thereby reducing screening efficiency. The presence of the coating can reduce friction between the material and the screw mechanism 3, avoid material blockage or adhesion to the screw mechanism 3, and ensure smooth screening process. By adding an anti-adhesion coating to the surface of the screw mechanism 3, the adhesion of material to the equipment is significantly reduced, thereby improving screening efficiency, while reducing the frequency of equipment cleaning and lowering maintenance costs. In addition, the presence of the anti-adhesion coating can effectively extend the service life of the equipment.

[0048] The working process of the spiral sieve device described above is as follows:

[0049] In use, this spiral sieve device is placed at an angle inside the raw material box or barrel. The operator holds the sieve cylinder wall 1 and rotates the collection box 5 to start operation. At this time, the raw material enters the interior of the sieve cylinder wall 1 through the raw material inlet 101. The screw mechanism 3 rotates under the drive of the collection box 5, gradually lifting the raw material to the upper collection box 5. During the lifting process, the raw material that meets the requirements will be filtered back into the raw material box or barrel through the through hole 3021 on the screw mechanism 3, while the clumps or lumps that do not meet the requirements will be collected into the collection box 5 through the sieve hole 401 on the rear cover plate 4. During operation, the operator can observe the collection situation inside the collection box 5 at any time through the transparent collection box 5 and can clean the clumps or lumps inside the collection box 5 in real time.

[0050] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0051] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A spiral sieve device, characterized in that, The spiral sieve device includes: The screen cylinder wall is provided with at least one raw material inlet for the inlet / outlet of raw materials; The front end is fixedly connected to one end of the sieve cylinder wall to seal one end of the sieve cylinder wall; A screw mechanism is located inside the wall of the sieve cylinder, with one end rotatably connected to the front end. The screw mechanism has multiple through holes for filtering raw materials through the through holes. The rear end cover is fixedly connected to the other end of the sieve cylinder wall. The rear end cover has at least one sieve hole in the radial direction for sieving clumps or agglomerates. The collection box has a screw mechanism that passes through the rear end cover and is connected to it. The collection box abuts against the rear end cover. The collection box drives the screw mechanism to rotate clockwise / counterclockwise, and the screw mechanism drives the raw material to be lifted / lowered.

2. The spiral sieve device according to claim 1, characterized in that, The screw mechanism includes: The screw has one end rotatably connected to the front end and the other end detachably connected to the collection box; The spiral blades, wound around the axial direction of the screw, form an Archimedean spiral structure and are used to lift / lower the raw material to achieve multi-stage screening.

3. The spiral sieve device according to claim 1, characterized in that, The collection box has a receiving cavity, and a crossbeam spans the opening of the receiving cavity. The crossbeam is connected to the screw mechanism.

4. The spiral sieve device according to claim 3, characterized in that, The crossbeam has a wedge-shaped structure, with one side being an inclined surface and the other side being a rectangular surface.

5. The spiral sieve device according to claim 1, characterized in that, It also includes a bearing, which is located between the front end and the screw mechanism to ensure the smooth rotation of the screw mechanism.

6. The spiral sieve device according to claim 1, characterized in that, The collection box is transparent so that operators can observe the collection of the clumps or lumps inside.

7. The spiral sieve device according to claim 1, characterized in that, The diameter of the sieve hole is larger than the diameter of the through hole.

8. The spiral sieve device according to claim 2, characterized in that, The spiral blade is provided with a plurality of through holes.

9. The spiral sieve device according to claim 1, characterized in that, The screw mechanism is threadedly connected to the collection box.

10. The spiral sieve device according to claim 1, characterized in that, The surface of the screw mechanism is provided with an anti-adhesion coating to reduce the adhesion of raw materials to the screw mechanism.

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