A multi-stage silica tailings crushing device

Abstract

The utility model discloses a kind of multi-section silica tailings crushing device, it is related to tailings recovery technical field.To solve the problem that the crushing mode of existing crushing device is single, the crushing of large-particle material in silica tailings is not sufficient, efficiency and effect are limited, it is difficult to guarantee product granularity uniform, and material after screening is prone to granularity crossover, affect subsequent granularity accurate control;Through the jaw crushing of first crushing mechanism and the conical crushing of second crushing mechanism form multi-section crushing process, make silica tailings sequentially through different crushing cavities and gradually refine crushing, can make full use of the advantage of each crushing mechanism, jaw crushing is suitable for processing bulky material, carries out preliminary crushing, conical crushing can carry out fine crushing to medium-particle material, to greatly improve crushing efficiency, more accurately control product granularity, make the granularity of final discharged silica tailings more uniform, satisfy the requirement of different industrial application to material granularity, improve the applicability and quality of product.

Description

Technical Field

[0001] This utility model relates to the field of tailings recycling technology, specifically a multi-stage silica tailings crushing device. Background Technology

[0002] By crushing tailings, large volumes can be transformed into smaller, more manageable stones suitable for production, thus enabling resource reuse. For example, patent application CN221133149U discloses a tailings crushing device for concrete block production, comprising a tailings grading box and a crushing box positioned above it. The tailings grading box contains, from top to bottom, a primary screening plate, a secondary screening plate, and a guide plate. This patent application controls the release and retraction of steel wire ropes to ensure the primary and secondary screening plates are horizontal during tailings screening. A material-pulling component further separates the tailings, causing them to rotate and tilt after screening. This allows the multi-stage tailings to slide out of the tailings discharge port, ensuring effective multi-stage screening.

[0003] However, although the aforementioned patent achieves multi-stage screening of tailings sand through a graded screening structure, the following problems still exist:

[0004] 1. The crushing mechanism mainly relies on the crushing components in the crushing box to crush the tailings sand. The crushing method is relatively simple. It is difficult to fully crush the larger particles that may exist in silica tailings. The crushing efficiency and crushing effect are limited, and the uniformity of product particle size cannot be guaranteed.

[0005] In traditional crushing equipment, when large particles enter the fine crushing mechanism, it can easily lead to low crushing efficiency, aggravate the wear of equipment parts, increase maintenance costs, and the screened material may have overlapping particle sizes, affecting the precise control of material particle size in subsequent production. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-stage silica tailings crushing device. Through the jaw crushing of the first crushing mechanism and the cone crushing of the second crushing mechanism, a multi-stage crushing process is formed to achieve efficient crushing and precise screening of silica tailings. The dynamic grading and screening design with increasing intervals between screening rollers can solve the problems in the prior art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A multi-stage silica tailings crushing device includes a crusher box, a crushing chamber, and a transmission chamber. The crushing chamber is located inside the crusher box, and a first crushing mechanism and a second crushing mechanism are installed inside the crushing chamber. A screening roller is installed at the lower end of the first crushing mechanism, and the screening roller is rotatably connected to the inner wall of the crusher box through a bearing. The second crushing mechanism is located at the lower end of the screening roller, and a screen is installed at the lower end of the second crushing mechanism. A transmission main shaft is installed inside the transmission chamber, and the first crushing mechanism and the second crushing mechanism are connected to the transmission main shaft.

[0009] Preferably, the first crushing mechanism includes a fixed jaw plate, a movable jaw plate, and an eccentric sleeve. The fixed jaw plate is fixed to the inner wall of the crusher box, and the movable jaw plate is connected to the transmission main shaft through the eccentric sleeve. The surfaces of the fixed jaw plate and the movable jaw plate are provided with matching toothed structures.

[0010] Preferably, the eccentric sleeve includes an eccentric ring, a fixed bushing, and a guide plate. One side of the guide plate passes through the fixed bushing and is fixed to the movable jaw plate. The eccentric ring is fixedly connected to the transmission main shaft, and the axes of the transmission main shaft and the eccentric ring are not on the same straight line.

[0011] Preferably, the fixed bushing is L-shaped, with one end rotatably connected to the transmission main shaft and the other end movably connected to the guide plate. A limit guide plate is installed on one side of the guide plate, and the limit guide plate is slidably connected to the eccentric ring.

[0012] Preferably, the second crushing mechanism includes a crushing cone, a fixed cone, and an adjusting ring. The fixed cone is fixed to the inner wall of the crusher box, the crushing cone is installed on the upper end of the adjusting ring, and an eccentric shaft is provided at the lower end of the crushing cone. The eccentric shaft is sleeved with the adjusting ring.

[0013] Preferably, one side of the adjusting ring meshes with the first bevel gear, the first bevel gear is symmetrically mounted at both ends of the transmission shaft, and the other side of the transmission shaft meshes with the second bevel gear through the first bevel gear.

[0014] Preferably, the second bevel gear is fixedly connected to the transmission main shaft, a crushing motor is installed on one side of the transmission main shaft, the output shaft of the crushing motor is fixedly connected to the driving gear, the driving gear is rotatably connected to the driven gear through the transmission rack, and the driven gear is fixedly connected to the transmission main shaft.

[0015] Preferably, the screening roller includes a driving roller and a driven roller. One end of the driving roller is fixedly connected to the output shaft of the screening motor. The screening motor is fixedly installed on one side of the crusher box. A transmission belt is fitted on one side of the driving roller and the driven roller. The axial spacing of the screening roller near the first crushing mechanism gradually increases towards the transmission cavity.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The multi-stage crushing process, consisting of a jaw crusher in the first crushing mechanism and a cone crusher in the second crushing mechanism, allows silica tailings to be progressively refined through different crushing chambers. This fully utilizes the advantages of each crushing mechanism. The jaw crusher is suitable for processing large pieces of material for initial crushing, while the cone crusher can perform fine crushing of medium-sized particles, thereby greatly improving crushing efficiency, more accurately controlling product particle size, and making the final discharged silica tailings more uniform in particle size. This meets the particle size requirements of different industrial applications and improves the applicability and quality of the product. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the multi-stage silica tailings crushing device of this utility model;

[0019] Figure 2 This is a schematic diagram of the crushing chamber and the transmission chamber of this utility model;

[0020] Figure 3 This is a partial axonometric view of the first crushing mechanism of this utility model;

[0021] Figure 4 This is a partial cross-sectional schematic diagram of the second crushing mechanism of this utility model.

[0022] In the diagram: 1. Crusher box; 11. Screening inlet; 12. Feed hopper; 13. Discharge hopper; 2. Crushing chamber; 21. Fixed jaw plate; 22. Movable jaw plate; 23. Eccentric sleeve; 231. Eccentric ring; 232. Fixed bushing; 233. Guide plate; 234. Limiting guide plate; 24. Crushing cone; 25. Fixed cone; 26. Adjusting ring; 27. Eccentric shaft; 28. First bevel gear; 29. ​​Drive shaft; 3. Drive chamber; 31. Drive main shaft; 32. Crushing motor; 33. Drive gear; 34. Drive rack; 35. Driven gear; 36. Second bevel gear; 4. Screening roller; 41. Screening motor; 5. Screen. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The present invention will be further described below with reference to specific embodiments:

[0025] To address the limitations of existing crushing devices, which rely on a single crushing method, resulting in insufficient crushing of large particles in silica tailings, limited efficiency and effectiveness, and difficulty in ensuring uniform product particle size; furthermore, the incorporation of large particles into the fine crushing mechanism reduces efficiency, accelerates equipment wear, increases maintenance costs, and leads to cross-size particles after screening, hindering subsequent precise particle size control, please refer to [the relevant documentation / reference needed]. Figures 1-4 This embodiment provides the following technical solution:

[0026] A multi-stage silica tailings crushing device includes a crusher housing 1, a crushing chamber 2, and a transmission chamber 3. The crusher housing 1 has a screening inlet 11 on its surface, a feed hopper 12 installed at its upper end, and a discharge hopper 13 on its lower surface. The crushing chamber 2 is located inside the crusher housing 1 and houses a first crushing mechanism and a second crushing mechanism. A screening roller 4 is installed at the lower end of the first crushing mechanism and is rotatably connected to the inner wall of the crusher housing 1 via bearings. The second crushing mechanism is located at the lower end of the screening roller 4 and has a screen 5 installed at its lower end. A transmission shaft 31 is installed inside the transmission chamber 3. The first and second crushing mechanisms are connected to the transmission shaft 31. A crushing motor 32 is installed on one side of the transmission shaft 31, and its output shaft is fixedly connected to a drive gear 33. The drive gear 33 is rotatably connected to a driven gear 35 via a transmission rack 34. The driven gear 35 is fixedly connected to the transmission shaft 31, simultaneously driving both the first and second crushing mechanisms, thus fully utilizing the crusher housing 1. The internal space reduces the equipment's footprint, avoids the need for separate transmission devices for each crushing mechanism, lowers manufacturing costs and energy consumption, and improves energy efficiency. At the same time, the stable and reliable connection between each transmission component ensures high transmission efficiency, guaranteeing the smooth operation of the entire crushing device, reducing downtime caused by transmission system failures, and improving equipment reliability and production continuity.

[0027] In this embodiment, a multi-stage crushing process is formed by the jaw crusher of the first crushing mechanism and the cone crusher of the second crushing mechanism. The silica tailings are gradually refined by passing through different crushing chambers in sequence. This fully utilizes the advantages of each crushing mechanism. The jaw crusher is suitable for processing large pieces of material and performing preliminary crushing, while the cone crusher can perform fine crushing of medium-sized particles. This greatly improves crushing efficiency, controls product particle size more accurately, and makes the final discharged silica tailings more uniform in particle size, meeting the particle size requirements of different industrial applications and improving the applicability and quality of the product.

[0028] In this embodiment, the first crushing mechanism includes a fixed jaw plate 21, a movable jaw plate 22, and an eccentric sleeve 23. The fixed jaw plate 21 is fixed to the inner wall of the crusher housing 1. The movable jaw plate 22 is connected to the transmission main shaft 31 through the eccentric sleeve 23. The surfaces of the fixed jaw plate 21 and the movable jaw plate 22 are provided with matching toothed structures. The eccentric sleeve 23 includes an eccentric ring 231, a fixed bushing 232, and a guide plate 233. One side of the guide plate 233 passes through the fixed bushing 232 and is fixed to the movable jaw plate 22. The eccentric ring 231 is fixedly connected to the transmission main shaft 31. The axes of the transmission main shaft 31 and the eccentric ring 231 are not on the same straight line. The fixed bushing 232 is in the form of a fixed ring. The L-shaped fixed bushing 232 is rotatably connected at one end to the transmission main shaft 31 and movably connected at the other end to the guide plate 233. A limit guide plate 234 is installed on one side of the guide plate 233. The limit guide plate 234 is slidably connected to the eccentric ring 231. When the transmission main shaft 31 rotates, the eccentric ring 231 rotates and drives the limit guide plate 234 to slide on the eccentric ring 231, thereby driving the guide plate 233 to move back and forth on one side of the fixed bushing 232, thereby driving the movable jaw plate 22 to move back and forth, realizing the initial crushing of the material by the first crushing mechanism, ensuring the stability and accuracy of the movement of the movable jaw plate 22, and being able to precisely control the stroke and crushing force of the movable jaw plate 22, making the crushing effect of the first crushing mechanism more stable and ensuring that the particle size of the initially crushed material is uniform.

[0029] In this embodiment, the second crushing mechanism includes a crushing cone 24, a fixed cone 25, and an adjusting ring 26. The fixed cone 25 is fixed to the inner wall of the crusher housing 1. The crushing cone 24 is installed on the upper end of the adjusting ring 26. The surface of the fixed cone 25 is provided with uniform crushing teeth. An eccentric shaft 27 is provided at the lower end of the crushing cone 24. The eccentric shaft 27 is sleeved with the adjusting ring 26. One side of the adjusting ring 26 meshes with a first bevel gear 28. The first bevel gear 28 is symmetrically installed at both ends of the transmission shaft 29. The other side of the transmission shaft 29 meshes with a second bevel gear 36 through the first bevel gear 28. The second bevel gear 36 is fixedly connected to the transmission main shaft 31. Compared with traditional crushing equipment, this particle size adjustment structure is simple to operate, has high adjustment accuracy, does not require disassembling a large number of parts, greatly shortens the equipment adjustment time, improves production efficiency, and also enhances the adaptability of the equipment to different crushing needs, thus meeting diverse production requirements.

[0030] In this embodiment, the screening roller 4 includes a driving roller and a driven roller. One end of the driving roller is fixedly connected to the output shaft of the screening motor 41. The screening motor 41 is fixedly installed on one side of the crusher box 1. A transmission belt is fitted on one side of the driving roller and the driven roller. The axial spacing of the screening roller 4 near the first crushing mechanism gradually increases towards the transmission cavity 3. The driving roller is driven to rotate by the screening motor 41, which in turn drives the driven roller to rotate synchronously by the transmission belt, thereby realizing the rotation of the screening roller 4. This allows for the screening of the silica tailings after crushing by the first crushing mechanism. The rotation of the screening roller 4 also moves the crushed silica tailings towards the transmission cavity 3. By gradually increasing the axial spacing, silica tailings of different diameters are gradually screened, enabling automatic grading based on material particle size. The second crushing mechanism prioritizes processing silica tailings with smaller diameters, preventing materials of different particle sizes from mixing and entering the next crushing stage. This makes the crushing process more orderly and efficient, reduces the load on the second crushing mechanism, and prevents material from accumulating below the first crushing mechanism, ensuring smooth operation of the crushing process and improving the continuity and stability of production.

[0031] Working Principle: Silica tailings enter the crusher box 1 from the feed hopper 12 and first fall into the first crushing mechanism, where they undergo preliminary crushing under the mutual compression of the fixed jaw plate 21 and the movable jaw plate 22. When the drive shaft 31 rotates, the eccentric ring 231 drives the limit guide plate 234 to slide, causing the movable jaw plate 22 to reciprocate, thus crushing the material. The material after preliminary crushing falls onto the screening roller 4, and the screening motor 41 drives the active roller and the driven roller to rotate. Through the design of increasing shaft spacing, materials of different diameters are screened. Smaller particles fall into the second crushing mechanism, while larger particles continue to be screened on the screening roller 4. Unqualified particles are manually collected and processed. The material entering the second crushing mechanism is further crushed between the crushing cone 24 and the fixed cone 25. The crushing cone 24, through the cooperation of the eccentric shaft 27 and the adjusting ring 26, performs a gyratory motion under the drive of the drive shaft 31, completing fine crushing. Finally, the crushed material is screened through the screen 5, with qualified particles discharged from the feed hopper 13 and unqualified particles manually collected and processed.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage silica tailings crushing device, comprising a crusher box (1), a crushing chamber (2), and a transmission chamber (3), characterized in that, The crushing chamber (2) is located inside the crusher box (1). The first crushing mechanism and the second crushing mechanism are installed inside the crushing chamber (2). The screening roller (4) is installed at the lower end of the first crushing mechanism. The screening roller (4) is rotatably connected to the inner wall of the crusher box (1) through a bearing. The second crushing mechanism is located at the lower end of the screening roller (4). The screen (5) is installed at the lower end of the second crushing mechanism. The transmission main shaft (31) is installed inside the transmission chamber (3). The first crushing mechanism and the second crushing mechanism are connected to the transmission main shaft (31) for transmission.

2. The multi-stage silica tailings crushing device according to claim 1, characterized in that, The first crushing mechanism includes a fixed jaw plate (21), a movable jaw plate (22), and an eccentric sleeve (23). The fixed jaw plate (21) is fixed to the inner wall of the crusher box (1), and the movable jaw plate (22) is connected to the transmission main shaft (31) through the eccentric sleeve (23). The surfaces of the fixed jaw plate (21) and the movable jaw plate (22) are provided with matching tooth structures.

3. The multi-stage silica tailings crushing device according to claim 2, characterized in that, The eccentric sleeve (23) includes an eccentric ring (231), a fixed bushing (232) and a guide plate (233). One side of the guide plate (233) passes through the fixed bushing (232) and is fixed to the movable jaw plate (22). The eccentric ring (231) is fixedly connected to the transmission main shaft (31). The axes of the transmission main shaft (31) and the eccentric ring (231) are not on the same straight line.

4. The multi-stage silica tailings crushing device according to claim 3, characterized in that, The fixed bushing (232) is L-shaped. One end of the fixed bushing (232) is rotatably connected to the transmission main shaft (31), and the other end is movably connected to the guide plate (233). A limit guide plate (234) is installed on one side of the guide plate (233), and the limit guide plate (234) is slidably connected to the eccentric ring (231).

5. The multi-stage silica tailings crushing device according to claim 1, characterized in that, The second crushing mechanism includes a crushing cone (24), a fixed cone (25) and an adjusting ring (26). The fixed cone (25) is fixed to the inner wall of the crusher box (1). The crushing cone (24) is installed on the upper end of the adjusting ring (26). An eccentric shaft (27) is provided at the lower end of the crushing cone (24). The eccentric shaft (27) is sleeved with the adjusting ring (26).

6. A multi-stage silica tailings crushing device according to claim 5, characterized in that, The adjusting ring (26) meshes with the first bevel gear (28) on one side. The first bevel gear (28) is symmetrically installed at both ends of the transmission shaft (29). The other side of the transmission shaft (29) meshes with the second bevel gear (36) through the first bevel gear (28).

7. A multi-stage silica tailings crushing device according to claim 6, characterized in that, The second bevel gear (36) is fixedly connected to the transmission main shaft (31). A crushing motor (32) is installed on one side of the transmission main shaft (31). The output shaft of the crushing motor (32) is fixedly connected to the driving gear (33). The driving gear (33) is rotatably connected to the driven gear (35) through the transmission rack (34). The driven gear (35) is fixedly connected to the transmission main shaft (31).

8. The multi-stage silica tailings crushing device according to claim 1, characterized in that, The screening roller (4) includes a driving roller and a driven roller. One end of the driving roller is fixedly connected to the output shaft of the screening motor (41). The screening motor (41) is fixedly installed on one side of the crusher box (1). A transmission belt is fitted on one side of the driving roller and the driven roller. The axial spacing of the screening roller (4) near the first crushing mechanism gradually increases towards the transmission cavity (3).

Images