Multi-layer vibrating screen fractioning stone material handling system

Abstract

The utility model discloses a multilayer vibrating screen classification formula ground paving stone raw material processing system, including the shell body and its inside from top to bottom setting in proper order first grade, second grade and third grade screening mechanism. Each level screening mechanism is independent rectangular cylinder, and the bottom surface is equipped with inclined screen plate respectively, and is elastically connected through the spring of lateral wall and the shell body. The lateral wall of shell body is equipped with the vibration mechanism that is composed of vibration motor, fixed plate and top rod, drives all screening mechanism same frequency vibration. The outlet of each level screening mechanism is equipped with the movable baffle that can be opened and closed independently and the discharge inclined plate that extends to the shell outside, realizes the flexible diversion and collection to different particle size coarse material. The utility model adopts above -mentioned structure, realizes the efficient multistage screening of ground paving stone raw material through integrated structure, has the advantages such as convenient maintenance, high space utilization and material sorting flexible controllable, effectively promotes production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of building material processing technology, specifically a multi-layer vibrating screen type paving stone raw material processing system. Background Technology

[0002] The production quality of paving stones largely depends on the particle size distribution of the raw aggregate. A uniform and reasonable gradation can improve the density, strength, and surface quality of the paving stones. Currently, in industrial production, vibrating screens are key equipment for raw material screening.

[0003] However, traditional multi-layer vibrating screens typically use an integral screen box, with each screen layer fixed within the same box and their vibrations completely synchronized. This structure has certain limitations: First, when it is necessary to replace or repair a particular screen layer, especially those located in the middle or lower layers, the operating space is narrow, making maintenance inconvenient; second, all screening mechanisms are rigidly connected, and their vibration parameters cannot be independently adjusted according to the characteristics of the material being screened at that layer, affecting the optimization of screening efficiency; furthermore, in existing equipment, the discharge method for coarse particles on the screen is relatively simple, usually falling directly into a unified collection trough, which is not convenient for the separate collection and targeted treatment of unqualified coarse materials of specific particle sizes (such as returning them to the crusher for further crushing).

[0004] Therefore, there is an urgent need in this field for a multi-layer vibrating screening system that is easy to maintain and can flexibly separate and collect coarse material on the screen. Summary of the Invention

[0005] The technical problem to be solved by this utility model is to provide a multi-layer vibrating screen type paving stone raw material processing system, which not only realizes multi-stage screening of raw materials, but also greatly facilitates equipment maintenance and flexible separation of materials of specific particle size by designing each screening mechanism as an independent rectangular cylinder and adopting a combination of lateral vibration and movable baffles.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a multi-layer vibrating screening type paving stone raw material processing system, including an outer shell, wherein a primary screening mechanism, a secondary screening mechanism and a tertiary screening mechanism are arranged sequentially from top to bottom inside the outer shell. The primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism are rectangular cylindrical structures, and the bottom surfaces of the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism are sloping and are respectively provided with a primary inclined screen plate, a secondary inclined screen plate and a tertiary inclined screen plate; The outer shell is provided with a vibration mechanism on its side wall. The vibration mechanism is used to drive the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism to vibrate at the same frequency.

[0007] In a preferred embodiment, the upper part of the side walls of the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism are provided with lugs, and three sets of fixing blocks are provided at different height positions on the inner wall of the outer shell. The lugs on the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism are respectively connected to one of the sets of fixing blocks by springs.

[0008] In a preferred embodiment, the lower part of the side plate on the lower side of the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism is provided with a movable baffle, and the side wall of the outer shell is provided with a through hole at the same horizontal height as the movable baffle. The upper end of the movable baffle is hinged to the side wall of the screening mechanism, and a pull rope is provided on the outer wall of the movable baffle. The end of the pull rope is provided with a hook, and two hanging rings are provided on the outer wall of the outer shell above the through hole on the side wall of the outer shell. The lower part of the side plate on the lower side of the primary screening mechanism, the secondary screening mechanism and the tertiary screening mechanism is also provided with a discharge inclined plate located on the extension line of the inclined screen plate. The three discharge inclined plates pass through the through holes on the side wall of the outer shell and extend out of the outer shell.

[0009] In a preferred embodiment, both the secondary screening mechanism and the tertiary screening mechanism are equipped with receiving hoppers at their top.

[0010] In a preferred embodiment, the vibration mechanism includes three push rods that pass through the side wall of the outer shell, with one end of each push rod extending into the outer shell contacting the side wall of one of the three screening mechanisms respectively. The three top rods are fixed at one end outside the outer casing to the same fixed plate, and the fixed plate is equipped with a vibration motor.

[0011] In a preferred embodiment, a limiting plate is provided on the portion of the three top rods located inside the outer casing.

[0012] In a preferred embodiment, the top of the outer shell is provided with a feed hopper, and a planetary feeder is provided inside the feed hopper.

[0013] In a preferred embodiment, a backfeed conveyor belt is provided below the three discharge ramps extending from the outer shell, which returns the coarse material to the crushing process.

[0014] In a preferred embodiment, a fine material conveyor belt is provided at the bottom of the outer casing.

[0015] The multi-layer vibrating screen type paving stone raw material processing system provided by this utility model has the following beneficial effects by adopting the above-mentioned structure: (1) By setting independently openable and closable movable baffles and discharge inclined plates at the outlets of each screening mechanism, the precise diversion of coarse materials of different particle sizes is realized. Operators can flexibly control the discharge path of materials of specific specifications according to quality requirements, which facilitates the online rejection and recycling of unqualified products, effectively improving product quality control capabilities and raw material utilization rate; (2) By integrating the three-stage screening mechanism into the same outer shell from top to bottom, the high integration of multi-layer screening function is achieved. Compared with the scheme of using multiple single-layer screening equipment in series, this design greatly reduces the overall footprint of the equipment and the layout is more reasonable. It is especially suitable for deployment in production sites with limited space, effectively reducing the cost of factory construction and layout. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] In the diagram: 1. Outer shell; 2. Primary screening mechanism; 3. Secondary screening mechanism; 4. Tertiary screening mechanism; 5. Ear block; 6. Fixing block; 7. Spring; 8. Primary inclined screen plate; 9. Secondary inclined screen plate; 10. Tertiary inclined screen plate; 11. Movable baffle; 12. Hanging ring; 13. Pull rope; 14. Receiving hopper; 15. Top rod; 16. Limiting plate; 17. Fixing plate; 18. Vibrating motor; 19. Feed hopper; 20. Planetary feeder; 21. Reverse material conveyor belt; 22. Fine material conveyor belt; 23. Discharge inclined plate. Detailed Implementation

[0018] like Figure 1 A multi-layer vibrating screen type paving stone raw material processing system includes an outer shell 1. Inside the outer shell 1, from top to bottom, there are a primary screening mechanism 2, a secondary screening mechanism 3, and a tertiary screening mechanism 4. The primary screening mechanism 2, the secondary screening mechanism 3, and the tertiary screening mechanism 4 are rectangular cylindrical structures. The bottom surfaces of the primary screening mechanism 2, the secondary screening mechanism 3, and the tertiary screening mechanism 4 are sloping and are respectively provided with a primary inclined screen plate 8, a secondary inclined screen plate 9, and a tertiary inclined screen plate 10. The outer casing 1 is provided with a vibration mechanism on its side wall. The vibration mechanism is used to drive the primary screening mechanism 2, the secondary screening mechanism 3 and the tertiary screening mechanism 4 to achieve synchronous vibration.

[0019] In a preferred embodiment, the upper part of the side walls of the primary screening mechanism 2, the secondary screening mechanism 3 and the tertiary screening mechanism 4 are provided with ear blocks 5, and three sets of fixing blocks 6 are provided at different height positions on the inner wall of the outer shell 1. The ear blocks 5 on the primary screening mechanism 2, the secondary screening mechanism 3 and the tertiary screening mechanism 4 are respectively connected to one of the sets of fixing blocks 6 by springs 7.

[0020] In a preferred embodiment, a movable baffle 11 is provided on the lower part of the side plate of the lower side of the primary screening mechanism 2, the secondary screening mechanism 3 and the tertiary screening mechanism 4. A through hole at the same horizontal height as the movable baffle 11 is provided on the side wall of the outer shell 1. The upper end of the movable baffle 11 is hinged to the side wall of the screening mechanism. A pull rope 13 is provided on the outer wall of the movable baffle 11. A hook is provided at the end of the pull rope 13. Two hanging rings 12 are provided on the outer wall of the outer shell 1 above the through hole on the side wall of the outer shell 1. The lower part of the side plate on the lower side of the primary screening mechanism 2, the secondary screening mechanism 3 and the tertiary screening mechanism 4 is also provided with a discharge inclined plate 23 located on the extension line of the inclined screen plate. The three discharge inclined plates 23 pass through the through holes on the side wall of the outer shell 1 and extend to the outside of the outer shell 1.

[0021] In a preferred embodiment, both the secondary screening mechanism 3 and the tertiary screening mechanism 4 are provided with a receiving hopper 14 at their top.

[0022] In a preferred embodiment, the vibration mechanism includes three push rods 15 that pass through the side wall of the outer shell 1, and one end of each push rod 15 that extends into the outer shell 1 contacts the side wall of the three screening mechanisms respectively. The three top rods 15 are fixed at one end outside the outer casing 1 to the same fixing plate 17, and the fixing plate 17 is equipped with a vibration motor 18.

[0023] In a preferred embodiment, a limiting plate 16 is provided on the portion of the three top rods 15 located inside the outer casing 1.

[0024] In a preferred embodiment, the top of the outer shell 1 is provided with a feeding hopper 19, and a planetary feeder 20 is provided inside the feeding hopper 19.

[0025] In a preferred embodiment, a backfeed conveyor belt 21 is provided below the three discharge ramps 23 extending outside the outer shell 1, and the backfeed conveyor belt 21 returns the coarse material to the crushing process.

[0026] In a preferred embodiment, the bottom of the outer casing 1 is provided with a fine material conveyor belt 22.

[0027] The multi-layer vibrating screen type paving stone raw material processing system disclosed in this utility model, when in operation: First, the paving stone raw material (such as a mixture of aggregates of different particle sizes) is fed into the top feed hopper 19, and the planetary feeder 20 inside achieves uniform and controllable feeding to ensure the stability of the subsequent screening effect. The material then enters the first-stage screening mechanism 2.

[0028] Driven by the vibration mechanism (driven by the vibration motor 18, which transmits the excitation force to the side walls of each screening mechanism through the fixed plate 17 and the top rod 15), the primary, secondary, and tertiary screening mechanisms vibrate at the same frequency. The material jumps forward on the primary inclined screen plate 8 of the primary screening mechanism 2. The material smaller than the primary screen hole falls into the receiving hopper 14 below it and enters the secondary screening mechanism 9; while the large-diameter material larger than the primary screen hole moves along the inclined screen plate and is finally discharged from the machine body through the discharge inclined plate and falls into the return conveyor belt 21 to be sent back to the crushing process.

[0029] The material entering the secondary screening mechanism 3 undergoes the same process on the secondary inclined screen plate 9 before entering the tertiary screening mechanism 4, where it undergoes the finest screening on the tertiary inclined screen plate 10. The finest qualified material (such as stone powder) passes directly through the screen holes and falls onto the fine material conveyor belt 10 at the bottom of the outer casing for discharge.

[0030] In the above process, the discharge position can be closed by the movable baffle 11 to ensure the screening effect, or the movable baffle 11 can be kept open by hanging the hook on the pull rope 13 upward to the upper hanging ring 12, so as to achieve rapid screening and material return.

[0031] In addition, if the coarse material screened by the secondary inclined screen plate 9 and the tertiary inclined screen plate 10 is not up to standard, it can be returned to the crushing mechanism or transported to different silos for storage via the corresponding conveyor belt.

[0032] The entire process is carried out through an integrated device, which realizes continuous, multi-stage, and controllable screening and classification of paving stone raw materials from coarse to fine. The materials on each level of the screen can be flexibly separated, which greatly improves the efficiency of raw material processing and the flexibility of product quality control.

Claims

1. A multi-layer vibrating screen type paving stone raw material processing system, comprising an outer shell (1), characterized in that: The outer shell (1) is provided with a first-stage screening mechanism (2), a second-stage screening mechanism (3) and a third-stage screening mechanism (4) from top to bottom. The first-stage screening mechanism (2), the second-stage screening mechanism (3) and the third-stage screening mechanism (4) are rectangular cylindrical structures. The bottom surfaces of the first-stage screening mechanism (2), the second-stage screening mechanism (3) and the third-stage screening mechanism (4) are sloping and are respectively provided with a first-stage inclined screen plate (8), a second-stage inclined screen plate (9) and a third-stage inclined screen plate (10). The outer shell (1) is provided with a vibration mechanism on its side wall. The vibration mechanism is used to drive the primary screening mechanism (2), the secondary screening mechanism (3) and the tertiary screening mechanism (4) to achieve synchronous vibration.

2. The multi-layer vibrating screen type paving stone raw material processing system according to claim 1, characterized in that: The upper part of the side walls of the first-stage screening mechanism (2), the second-stage screening mechanism (3) and the third-stage screening mechanism (4) are provided with ear blocks (5), and three sets of fixing blocks (6) are provided on the inner wall of the outer shell (1) at different height positions. The ear blocks (5) on the first-stage screening mechanism (2), the second-stage screening mechanism (3) and the third-stage screening mechanism (4) are respectively connected to one of the sets of fixing blocks (6) by springs (7).

3. The multi-layer vibrating screen type paving stone raw material processing system according to claim 1, characterized in that: The lower side plate of the first-stage screening mechanism (2), the second-stage screening mechanism (3) and the third-stage screening mechanism (4) is provided with a movable baffle (11). The side wall of the outer shell (1) is provided with a through hole at the same horizontal height as the movable baffle (11). The upper end of the movable baffle (11) is hinged to the side wall of the screening mechanism. The outer wall of the movable baffle (11) is provided with a pull rope (13). The end of the pull rope (13) is provided with a hook. The outer wall of the outer shell (1) above the through hole on the side wall of the outer shell (1) is provided with two hanging rings (12). The lower side plate of the first-stage screening mechanism (2), the second-stage screening mechanism (3) and the third-stage screening mechanism (4) is also provided with a discharge inclined plate (23) located on the extension line of the inclined screen plate. The three discharge inclined plates (23) pass through the through holes on the side wall of the outer shell (1) and extend to the outside of the outer shell (1).

4. The multi-layer vibrating screen type paving stone raw material processing system according to claim 1, characterized in that: The top of both the secondary screening mechanism (3) and the tertiary screening mechanism (4) is provided with a receiving hopper (14).

5. The multi-layer vibrating screen type paving stone raw material processing system according to claim 1, characterized in that: The vibration mechanism includes three top rods (15) that pass through the side wall of the outer shell (1). The three top rods (15) have one end that extends into the outer shell (1) and respectively contact the side wall of the three screening mechanisms. The three top rods (15) are fixed at one end outside the outer shell (1) on the same fixed plate (17), and the fixed plate (17) is provided with a vibration motor (18).

6. The multi-layer vibrating screen type paving stone raw material processing system according to claim 5, characterized in that: The three top rods (15) are provided with limiting plates (16) on the portions of the top rods (1) located inside the outer casing (1).

7. The multi-layer vibrating screen type paving stone raw material processing system according to claim 1, characterized in that: The outer shell (1) is provided with a feeding hopper (19) at the top, and a planetary feeder (20) is provided inside the feeding hopper (19).

8. A multi-layer vibrating screen type paving stone raw material processing system according to claim 3, characterized in that: Below the three discharge ramps (23) extending to the outer shell (1), there is a back-feed conveyor belt (21) that sends the coarse material back to the crushing process.

9. A multi-layer vibrating screen type paving stone raw material processing system according to claim 1, characterized in that: The bottom of the outer casing (1) is provided with a fine material conveyor belt (22).

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