A nano calcium carbonate multi-stage screening device

Abstract

The utility model relates to nanometer calcium carbonate multistage screening technical field, specifically disclose a nanometer calcium carbonate multistage screening device, including the bottom plate, the top of bottom plate is provided with the flat plate, the frame body is fixedly connected with the upper side of flat plate through two support plates, the top of flat plate is provided with quick replacement mechanism, quick replacement mechanism includes respectively and is penetrated the first through slot of being set up in the frame body outer wall front and back two sides, the front and back two ends of frame body outer wall are all penetrated and set up the second through slot of being located below two first through slots, when the target sieve plate positioning is accurate, the limiting hole on its corresponding limiting plate will be aligned with the hole plate of frame body side, at this moment, the limiting rod is inserted and passes through the hole plate and limiting hole, and then cooperate with the lock mechanism fixed, can lock the position of upper sieve plate and lower sieve plate. This design realizes the flexible assembly of different aperture specifications sieve plate, can complete the sieve plate collocation without disassembling the overall equipment structure, and the operation is simple and time-saving, and the replacement time is significantly shortened.

Description

Technical Field

[0001] This utility model relates to the field of multi-stage sieving technology for nano-calcium carbonate, and specifically discloses a multi-stage sieving device for nano-calcium carbonate. Background Technology

[0002] Nano-calcium carbonate combines the stability of calcium carbonate with the unique properties of nanomaterials, such as high specific surface area, high activity, good dispersibility, and reinforcing properties. These excellent characteristics make it widely used in rubber, plastics, coatings, inks, and other fields. Different applications have different requirements for parameters such as particle size distribution and particle morphology of nano-calcium carbonate. Therefore, to meet diverse industrial needs, precise classification and sieving of nano-calcium carbonate is required to separate particles of different sizes, enabling refined application of the product.

[0003] Currently, the industry typically employs multi-layer screening devices for the grading and screening of nano-calcium carbonate. These devices use multiple vertically distributed and inclined screens to perform multi-stage filtration, utilizing particle size differences to achieve stratified screening. However, in traditional screening devices, the screens are usually fixed inside the equipment, making it difficult to flexibly adjust the screen aperture specifications and combinations according to actual production needs. When it is necessary to replace screens with different apertures or change the screening stages, the entire equipment structure often needs to be disassembled, which is cumbersome, time-consuming, and labor-intensive, severely impacting production efficiency. Therefore, a multi-stage screening device for nano-calcium carbonate is needed to solve these problems. Utility Model Content

[0004] This invention proposes a multi-stage sieving device for nano-calcium carbonate. Through the design of a combinable sieve plate structure, it can flexibly assemble sieve plates with different aperture specifications. The sieve plates can be matched without disassembling the overall equipment structure, making the operation simple and time-saving, and significantly shortening the replacement time.

[0005] This utility model is implemented as follows: a nano-calcium carbonate multi-stage sieving device includes a base plate, a flat plate is provided above the base plate, a frame is fixedly connected to the upper side of the flat plate by two support plates, and a quick replacement mechanism is provided above the flat plate. The quick-change mechanism includes first through slots respectively extending through the front and rear sides of the outer wall of the frame. Second through slots, located below the two first through slots, are also provided at both ends of the outer wall of the frame. Three upper screen plates are positioned above the flat plate and are fixedly connected by two first fixing strips. Three lower screen plates are positioned below the three upper screen plates and are fixedly connected by two second fixing strips. One upper screen plate and one lower screen plate are located inside the frame. The outer walls of the lower screen plate and the upper screen plate on the front side... The outer walls of the lower and upper screen plates located on the rear side are fixedly connected with connecting strips. The outer walls of the four connecting strips are fixedly connected with crossbars. A first limiting plate is fixedly connected between the left ends of the two upper crossbars, and a second limiting plate is fixedly connected between the left ends of the two lower crossbars. The outer walls of the first and second limiting plates are each provided with three limiting holes. A first perforated plate is fixedly connected to the left end of the frame. A limiting rod is inserted between the inside of the first perforated plate and the two corresponding upper and lower limiting holes. The quick-change mechanism also includes a locking mechanism. A vibration mechanism is installed above the base plate.

[0006] In a preferred embodiment of the present invention, a multi-stage sieving device for nano-calcium carbonate includes a locking mechanism comprising a baffle fixedly connected to the upper end of a limiting rod and abutting against a first perforated plate; a second perforated plate fixedly connected to the left end of the frame; a screw passing through the interior of the second perforated plate fixedly connected to the lower end of the limiting rod; and a hexagonal nut abutting against the outer wall of the second perforated plate.

[0007] As a preferred embodiment of the present invention, a multi-stage sieving device for nano-calcium carbonate includes a vibration mechanism comprising vibration springs fixedly connected to the four corners of the lower end face of the plate, all four vibration springs being fixedly connected to the base plate, and vibration motors being installed at both the front and rear ends of the frame.

[0008] As a preferred embodiment of the present invention, a multi-stage screening device for nano-calcium carbonate has three discharge troughs extending through the right end of the frame, and three guide frames are fixedly connected to the right end of the frame.

[0009] In a preferred embodiment of the present invention, a multi-stage sieving device for nano-calcium carbonate is provided, wherein the two second fixing strips are respectively attached to the interior of the two second through grooves, and the two first fixing strips are respectively attached to the interior of the two first through grooves.

[0010] In a preferred embodiment of the present invention, the frame, the three upper sieve plates, and the three lower sieve plates are all inclined.

[0011] As a preferred embodiment of the nano-calcium carbonate multi-stage sieving device of this utility model, mounting plates are fixedly connected to both the left and right ends of the base plate.

[0012] The beneficial effects of this utility model are: The three upper and three lower screen plates are connected as a whole by the first and second fixing bars. The mesh diameter of the upper screen plates is larger than that of the lower screen plates, and the specifications are different. By pushing the crossbars on the upper and lower sides, the screen plate assembly can be moved back and forth, allowing the target upper and lower screen plates to slide into their working positions inside the frame, while the remaining screen plates move out of the frame. When the target screen plate is accurately positioned, the limiting hole on its corresponding limiting plate will align with the perforated plate on the side of the frame. At this time, the limiting rod is inserted through the perforated plate and the limiting hole, and then fixed with the locking mechanism to lock the position of the upper and lower screen plates. This design enables flexible assembly of screen plates with different mesh diameters, and screen plate matching can be completed without disassembling the overall equipment structure. The operation is simple and time-saving, significantly reducing the replacement time. Attached Figure Description

[0013] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0014] Figure 1 This is a front sectional view of the overall structure of the nano-calcium carbonate multi-stage sieving device of this utility model; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a partial structural diagram of the present invention; Figure 4 This is a partial structural diagram of the present invention.

[0015] The markings in the diagram are: 1. Base plate; 2. Flat plate; 3. Support plate; 4. Frame; 5. First through groove; 6. Second through groove; 7. Upper screen plate; 8. Lower screen plate; 9. Discharge chute; 10. Guide frame; 11. First fixing strip; 12. Connecting strip; 13. Second fixing strip; 14. Second limiting plate; 15. Crossbar; 16. First limiting plate; 17. Limiting hole; 18. First perforated plate; 19. Limiting rod; 20. Baffle; 21. Second perforated plate; 22. Screw; 23. Hexagonal nut; 24. Vibration spring; 25. Vibration motor. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.

[0017] Please see Figure 1-4 A multi-stage sieving device for nano-calcium carbonate includes a base plate 1, a plate 2 is arranged above the base plate 1, a frame 4 is fixedly connected to the upper side of the plate 2 by two support plates 3, and a quick replacement mechanism is arranged above the plate 2. The quick-change mechanism includes first through slots 5 respectively extending through the front and rear sides of the outer wall of the frame 4. Second through slots 6 extending through the front and rear ends of the outer wall of the frame 4, located below the two first through slots 5, are also provided. Three upper screen plates 7 are provided above the plate 2, and are fixedly connected by two first fixing strips 11. Three lower screen plates 8 are provided below the three upper screen plates 7, and are fixedly connected by two second fixing strips 13. One upper screen plate 7 and one lower screen plate 8 are located inside the frame 4. The outer walls of the lower screen plate 8 and the upper screen plate 7 on the front side, and the outer walls of the lower screen plate 8 and the upper screen plate 7 on the rear side... Connecting strips 12 are fixedly connected to the outer walls of the lower sieve plate 8 and the upper sieve plate 7 on the side. Crossbars 15 are fixedly connected to the outer walls of the four connecting strips 12. A first limiting plate 16 is fixedly connected between the left ends of the two upper crossbars 15, and a second limiting plate 14 is fixedly connected between the left ends of the two lower crossbars 15. Three limiting holes 17 are opened through the outer walls of the first limiting plate 16 and the second limiting plate 14. A first hole plate 18 is fixedly connected to the left end of the frame 4. A limiting rod 19 is inserted between the inside of the first hole plate 18 and the two corresponding upper and lower limiting holes 17. The quick replacement mechanism also includes a locking mechanism. A vibration mechanism is installed above the base plate 1.

[0018] In this embodiment: three upper screen plates 7 are connected as a whole by two first fixing strips 11, and three lower screen plates 8 are connected as a whole by two second fixing strips 13. The upper and lower end faces of each upper screen plate 7 are flush with the end faces of the first fixing strip 11 and the upper connecting strip 12, respectively, and the lower screen plate 8 is flush with the end faces of the second fixing strip 13 and the lower connecting strip 12. The mesh diameters of the three upper screen plates 7 and the three lower screen plates 8 are different, and the mesh diameter of each upper screen plate 7 is larger than the mesh diameter of any lower screen plate 8. Different screening requirements can be achieved by combining the three upper screen plates 7 and the three lower screen plates 8 in pairs. When the upper sieve plate 7 and the lower sieve plate 8 are to be matched according to the requirements, the three upper sieve plates 7 and the three lower sieve plates 8 are moved in the front and back direction by pushing the upper and lower crossbars 15 until the target upper sieve plate 7 and the target lower sieve plate 8 enter the frame 4, and the remaining two upper sieve plates 7 and two lower sieve plates 8 are located on the outside of the frame 4. The three upper screen plates 7 correspond to the three limiting holes 17 of the first limiting plate 16, and the three lower screen plates 8 correspond to the three limiting holes 17 of the second limiting plate 14. When the target upper screen plate 7 and lower screen plate 8 are fully inserted into the frame 4 and are in the correct position, the corresponding limiting holes 17 will be aligned with the inside of the first hole plate 18 at the left end of the frame 4. At this time, the limiting rod 19 is passed through the inside of the first hole plate 18, the first limiting plate 16 and the corresponding limiting holes 17 of the second limiting plate 14 in sequence. Through the cooperation of the limiting rod 19, the two limiting holes 17 and the first hole plate 18, the position of the upper screen plate 7 and the lower screen plate 8 is fixed. Then, the locking mechanism prevents the limiting rod 19 from coming out of the two limiting holes 17 and the inside of the first hole plate 18, thereby realizing the flexible assembly of screen plates with different aperture specifications. The screen plate matching can be completed without disassembling the overall equipment structure. The operation is simple and time-saving, and the replacement time is significantly shortened. Subsequently, the frame 4 is driven by a vibration mechanism to generate high-frequency vibration. Nano-calcium carbonate is added from the upper left end of the frame 4. Under the vibration of the inclined upper screen plate 7 and lower screen plate 8, the material flows from left to right along the screen surface. Particles with a diameter smaller than the aperture of the upper screen plate 7 pass through the screen holes and fall to the lower screen plate 8. Larger particles slide to the right along the surface of the upper screen plate 7 and are discharged from the discharge chute 9 at the right end through the guide frame 10. The particles that fall to the lower screen plate 8 are screened again. Smaller particles pass through the holes of the lower screen plate 8. The remaining particles slide to the right along the surface of the lower screen plate 8 and are discharged from another discharge chute 9. Finally, the fine particles that pass through the bottom lower screen plate 8 slide to the right along the bottom of the inner wall of the frame 4 and are discharged from the bottom discharge chute 9, thus achieving multi-stage particle size separation.

[0019] As a technical optimization of this utility model, the locking mechanism includes a baffle 20 fixedly connected to the upper end of the limiting rod 19 and abutting against the first hole plate 18, a second hole plate 21 fixedly connected to the left end of the frame 4, a screw 22 passing through the interior of the second hole plate 21 fixedly connected to the lower end of the limiting rod 19, and a hexagonal nut 23 abutting against the outer wall of the second hole plate 21 threadedly connected to the outer wall of the screw 22.

[0020] In this embodiment: after the screw 22 at the lower end of the limiting rod 19 passes through the second hole plate 21, it is tightened by the hexagonal nut 23, so that the baffle 20 abuts against the upper end of the first hole plate 18, thereby preventing the limiting rod 19 from coming out of the two limiting holes 17 and the interior of the first hole plate 18.

[0021] As a technical optimization of this utility model, the vibration mechanism includes vibration springs 24 that are fixedly connected to the four corners of the lower end face of the plate 2. All four vibration springs 24 are fixedly connected to the base plate 1, and vibration motors 25 are installed at both the front and rear ends of the frame 4.

[0022] In this embodiment: when the power supply of the vibration motor 25 is turned on, the vibration motors 25 at both ends of the front and rear run synchronously, driving the frame 4 to generate high-frequency vibration. The vibration springs 24 at the four corners of the plate 2 and the bottom plate 1 provide flexible support and provide vibration conditions for screening.

[0023] As a technical optimization of this utility model, three material discharge slots 9 are provided through the right end of the frame 4, and three material guide frames 10 are fixedly connected to the right end of the frame 4.

[0024] In this embodiment: by setting three discharge troughs 9 and three guide frames 10, it is convenient to discharge materials of different particle sizes.

[0025] As a technical optimization of this utility model, the two second fixing strips 13 are respectively attached to the interior of the two second through grooves 6, and the two first fixing strips 11 are respectively attached to the interior of the two first through grooves 5.

[0026] In this embodiment, the two second fixing strips 13 and the second through groove 6, and the two first fixing strips 11 and the first through groove 5 are designed to fit together, thereby preventing material from leaking from the second through groove 6 and the first through groove 5. Only by applying a certain pushing force to the upper screen plate 7 and the first fixing strip 11, as well as the lower screen plate 8 and the second fixing strip 13, can they slide inside the first through groove 5 and the second through groove 6 respectively.

[0027] As a technical optimization of this utility model, the frame 4, the three upper sieve plates 7 and the three lower sieve plates 8 are all inclined.

[0028] In this embodiment, the inclined arrangement of the frame 4, the upper screen plate 7 and the lower screen plate 8 utilizes the component of gravity to make the material flow from left to right along the screen surface during vibration.

[0029] As a technical optimization of this utility model, mounting plates are fixedly connected to both the left and right ends of the base plate 1.

[0030] In this embodiment, the mounting plates at both ends of the bottom plate 1 are fixed to the working platform with bolts, providing rigid support for the entire screening device.

[0031] The working principle and usage process of this utility model are as follows: three upper screen plates 7 are connected as a whole by two first fixing strips 11, and three lower screen plates 8 are connected as a whole by two second fixing strips 13. The upper and lower end faces of each upper screen plate 7 are flush with the end faces of the first fixing strip 11 and the upper connecting strip 12, respectively, and the lower screen plate 8 is flush with the end faces of the second fixing strip 13 and the lower connecting strip 12. The mesh diameters of the three upper screen plates 7 and the three lower screen plates 8 are different, and the mesh diameter of each upper screen plate 7 is larger than the mesh diameter of any lower screen plate 8. Different screening requirements can be achieved by combining the three upper screen plates 7 and the three lower screen plates 8 in pairs. When the upper sieve plate 7 and the lower sieve plate 8 are to be matched according to the requirements, the three upper sieve plates 7 and the three lower sieve plates 8 are moved in the front and back direction by pushing the upper and lower crossbars 15 until the target upper sieve plate 7 and the target lower sieve plate 8 enter the frame 4, and the remaining two upper sieve plates 7 and two lower sieve plates 8 are located on the outside of the frame 4. The three upper sieve plates 7 correspond to the three limiting holes 17 of the first limiting plate 16, and the three lower sieve plates 8 correspond to the three limiting holes 17 of the second limiting plate 14. When the target upper sieve plate 7 and lower sieve plate 8 are fully inserted into the frame 4 and accurately positioned, the corresponding limiting holes 17 will be aligned with the inside of the first hole plate 18 on the left end of the frame 4. At this time, the limiting rod 19 is passed through the inside of the first hole plate 18, the first limiting plate 16, and the corresponding upper and lower limiting holes 17 of the second limiting plate 14 in sequence. The mutual cooperation of the positioning hole 17 and the first perforated plate 18 fixes the positions of the upper screen plate 7 and the lower screen plate 8. After the screw 22 at the lower end of the limiting rod 19 passes through the second perforated plate 21, it is tightened by the hexagonal nut 23, so that the baffle 20 abuts against the upper end of the first perforated plate 18, thereby preventing the limiting rod 19 from coming out of the two limiting holes 17 and the interior of the first perforated plate 18. This allows for flexible assembly of screen plates with different aperture specifications. The screen plates can be matched without disassembling the overall equipment structure, making the operation simple and time-saving, and significantly shortening the replacement time. Then the power supply of the vibration motor 25 is turned on, and the vibration motors 25 at both ends of the front and rear run synchronously, driving the frame 4 to generate high-frequency vibration. The vibration springs 24 at the four corners of the plate 2 and the bottom plate 1 provide flexible support and provide vibration conditions for screening. Nano-calcium carbonate is added from the upper left end of the frame 4. Under the vibration of the inclined upper sieve plate 7 and lower sieve plate 8, the material flows from left to right along the sieve surface. Particles with a diameter smaller than the aperture of the upper sieve plate 7 pass through the sieve holes and fall to the lower sieve plate 8. Larger particles slide to the right along the surface of the upper sieve plate 7 and are discharged from the discharge chute 9 at the right end through the guide frame 10. The particles falling to the lower sieve plate 8 are screened again. Smaller particles pass through the holes of the lower sieve plate 8. The remaining particles slide to the right along the surface of the lower sieve plate 8 and are discharged from another discharge chute 9. Finally, the fine particles that pass through the bottom layer of the lower sieve plate 8 slide to the right along the bottom surface of the inner wall of the frame 4 and are discharged from the bottom discharge chute 9, thus achieving multi-stage particle size separation.

[0032] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A multi-stage sieving device for nano-calcium carbonate, comprising a base plate (1), characterized in that: A flat plate (2) is provided above the base plate (1). A frame (4) is fixedly connected to the upper side of the flat plate (2) by two support plates (3). A quick replacement mechanism is provided above the flat plate (2). The quick-change mechanism includes first through slots (5) respectively penetrating the front and rear sides of the outer wall of the frame (4). Second through slots (6) located below the two first through slots (5) are also penetrating the front and rear ends of the outer wall of the frame (4). Three upper screen plates (7) are arranged above the flat plate (2), and the three upper screen plates (7) are fixedly connected by two first fixing strips (11). Three lower screen plates (8) are arranged below the three upper screen plates (7), and the three lower screen plates (8) are fixedly connected by two second fixing strips (13). One upper screen plate (7) and one lower screen plate (8) are located inside the frame (4). The outer walls of the lower screen plate (8) and the upper screen plate (7) located on the front side, and the... Connecting strips (12) are fixedly connected to the outer walls of the lower sieve plate (8) and the upper sieve plate (7) on the rear side. Crossbars (15) are fixedly connected to the outer walls of the four connecting strips (12). A first limiting plate (16) is fixedly connected between the left ends of the two upper crossbars (15). A second limiting plate (14) is fixedly connected between the left ends of the two lower crossbars (15). Three limiting holes (17) are opened through the outer walls of the first limiting plate (16) and the second limiting plate (14). A first hole plate (18) is fixedly connected to the left end of the frame (4). A limiting rod (19) is inserted between the inside of the first hole plate (18) and the two corresponding upper and lower limiting holes (17). The quick replacement mechanism also includes a locking mechanism. A vibration mechanism is provided above the base plate (1).

2. The nano-calcium carbonate multi-stage sieving device according to claim 1, characterized in that: The locking mechanism includes a baffle (20) fixedly connected to the upper end of the limiting rod (19) and abutting against the first hole plate (18). The left end of the frame (4) is fixedly connected to a second hole plate (21). The lower end of the limiting rod (19) is fixedly connected to a screw (22) that passes through the inside of the second hole plate (21). The outer wall of the screw (22) is threaded with a hexagonal nut (23) that abuts against the outer wall of the second hole plate (21).

3. The nano-calcium carbonate multi-stage sieving device according to claim 1, characterized in that: The vibration mechanism includes vibration springs (24) fixedly connected to the four corners of the lower end face of the plate (2). All four vibration springs (24) are fixedly connected to the base plate (1). Vibration motors (25) are installed at both the front and rear ends of the frame (4).

4. The nano-calcium carbonate multi-stage sieving device according to claim 1, characterized in that: The right end of the frame (4) is provided with three material discharge slots (9), and the right end of the frame (4) is fixedly connected with three material guide frames (10).

5. The nano-calcium carbonate multi-stage sieving device according to claim 1, characterized in that: The two second fixing strips (13) are respectively attached to the inside of the two second through grooves (6), and the two first fixing strips (11) are respectively attached to the inside of the two first through grooves (5).

6. The nano-calcium carbonate multi-stage sieving device according to claim 1, characterized in that: The frame (4), the three upper sieve plates (7) and the three lower sieve plates (8) are all inclined.

7. The nano-calcium carbonate multi-stage sieving device according to claim 1, characterized in that: Mounting plates are fixedly connected to both the left and right ends of the base plate (1).

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