A pre-treatment device for foundry spent sand
By using a structure of crushing rollers, grinding rollers, and screening mesh, combined with electromagnetic plates and vibrators, the problems of poor crushing effect and difficulty in separating iron filings in the pretreatment of foundry waste sand are solved, achieving uniform sand particle size and separation of iron filings, thus improving recycling efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIU JING MASCH EQUIP (LIYANG) CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, the crushing effect during the pretreatment of foundry waste sand is poor, it is easy to mix with lumps and iron filings are difficult to separate, which affects the later recycling.
The system employs a structure consisting of crushing rollers, grinding rollers, and a screening screen, combined with an electromagnetic plate and a vibrator, to achieve the crushing, screening, and iron filings separation of waste sand. Pre-treatment is completed through the cooperation of a drive motor and a rotating shaft.
It improves the crushing effect of waste sand, ensures uniform sand particle size, facilitates subsequent recycling, and effectively separates iron filings, thereby improving recycling efficiency.
Smart Images
Figure CN224359330U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of foundry waste sand treatment technology, and in particular relates to a pretreatment device for foundry waste sand. Background Technology
[0002] Used sand, as opposed to new sand, is produced after at least one casting process. In the past, used sand was simply discarded. However, with the increasing scarcity of resources, especially the high-specification requirements of molding sand in precision casting, the recycling of used sand has become a new research direction.
[0003] In the existing technology, the crushing effect of pretreatment during the recycling of foundry waste sand is poor, and it is easy to mix with lumps. At the same time, the iron filings mixed in are not easy to separate from the waste sand, which affects the subsequent recycling and use. Therefore, a pretreatment device for foundry waste sand is proposed to solve the above problems. Summary of the Invention
[0004] The purpose of this invention is to provide a pretreatment device for foundry waste sand to solve existing problems.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:
[0006] This utility model relates to a pretreatment device for foundry waste sand, comprising a pretreatment box and a feeding hopper. The feeding hopper is welded to the upper surface of the pretreatment box. A drive shaft and a driven shaft are rotatably installed inside the pretreatment box. Crushing rollers are installed on the peripheral sides of both the drive shaft and the driven shaft. A drive motor is fixedly installed on one surface of the pretreatment box, and a rotary motor is also installed on another surface of the pretreatment box. A rotary shaft is installed at the output end of the rotary motor, and one end of the rotary shaft extends into the interior of the pretreatment box. The rotary shaft is rotatably connected to the pretreatment box. An electromagnetic plate is installed on the peripheral side of the rotary shaft. An opening slot is also provided on one surface of the pretreatment box, which is located between the drive motor and the rotary motor. A sliding frame is slidably installed inside the opening slot. A screening screen is installed on the bottom surface inside the sliding frame. Electric slide rails are fixedly installed on two opposite surfaces inside the sliding frame. Sliding sleeves are slidably installed on one surface of each of the two electric slide rails. A connecting shaft is installed between the two sliding sleeves, and a grinding roller is rotatably installed on the peripheral side of the connecting shaft.
[0007] Furthermore, the peripheral side of the electromagnetic plate is rotatably connected to the inner wall of the pretreatment box, one end of the drive shaft extends to the outside of the pretreatment box, and the output end of the drive motor is fixedly connected to one end of the drive shaft.
[0008] Furthermore, the other end of the drive shaft and the driven shaft penetrates through the other surface of the pretreatment box, and a drive gear is fixedly installed at the other end of the drive shaft.
[0009] Furthermore, a driven gear is fixedly installed at the other end of the driven shaft, and the driving gear and the driven gear mesh with each other.
[0010] Furthermore, support plates are welded to both opposite surfaces of the pretreatment box, and the two support plates are respectively disposed on both sides of the lower surface of the sliding frame, and the lower surface of the sliding frame is slidably connected to the support plates.
[0011] Furthermore, each of the two support plates has a mounting plate on its lower surface, one end of each mounting plate is fixedly connected to the inner wall of the pretreatment box, and a vibrator is fixedly mounted on the upper surface of each mounting plate.
[0012] Furthermore, the upper surfaces of the two vibrators are in contact with the lower surface of the screening screen, one end of the sliding frame extends to the outside of the pretreatment box through an opening groove, a pull plate is welded to one end of the sliding frame, and a handle is welded to one surface of the pull plate.
[0013] Furthermore, a connecting plate is welded to the periphery of the pretreatment box, the connecting plate is located below the rotating motor, and support columns are welded to the periphery of the lower surface of the connecting plate. The upper and lower surfaces of the pretreatment box are open structures.
[0014] This utility model has the following beneficial effects:
[0015] This utility model facilitates the pretreatment of waste sand through a drive motor and crushing roller structure, crushing lumpy waste sand, and thoroughly pulverizing small lumps after crushing through an electric slide rail and grinding roller structure. Then, the crushed waste sand is uniform in size through a screening screen and vibrator, which facilitates its later recycling.
[0016] This invention utilizes a rotating shaft, an electromagnetic plate, and a rotating motor structure to easily adsorb iron filings mixed inside the screened old sand, thus facilitating the separation of old sand and iron filings during subsequent discharge and further simplifying recycling.
[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the pretreatment device for foundry waste sand according to the present invention.
[0020] Figure 2 This is a schematic diagram of the internal structure of a pretreatment device for foundry waste sand according to the present invention.
[0021] Figure 3 This is a top view schematic diagram of a pretreatment device for foundry waste sand according to the present invention.
[0022] Figure 4 This is a right-side structural schematic diagram of a pretreatment device for foundry waste sand according to this utility model.
[0023] The attached diagram lists the components represented by each number as follows:
[0024] 1. Pretreatment box; 2. Feed hopper; 3. Drive shaft; 4. Driven shaft; 5. Crushing roller; 6. Drive motor; 7. Drive gear; 8. Driven gear; 9. Opening slot; 10. Sliding frame; 11. Screening screen; 12. Support plate; 13. Mounting plate; 14. Vibrator; 15. Rotating shaft; 16. Electromagnetic plate; 17. Rotating motor; 18. Connecting plate; 19. Support column; 20. Pull plate; 21. Handle; 22. Electric slide rail; 23. Connecting shaft; 24. Grinding roller. Detailed Implementation
[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.
[0026] In the description of this utility model, it should be understood that the terms "upper", "middle", "outer", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0027] Please see Figures 1-4As shown, this utility model is a pretreatment device for foundry waste sand, including a pretreatment box 1 and a feed hopper 2. The feed hopper 2 is welded to the upper surface of the pretreatment box 1. A drive shaft 3 and a driven shaft 4 are rotatably installed inside the pretreatment box 1. Crushing rollers 5 are installed on the circumferential sides of both the drive shaft 3 and the driven shaft 4 to facilitate the pretreatment operation of the waste sand and to crush the agglomerated waste sand. A drive motor 6 is fixedly installed on one surface of the pretreatment box 1, and a rotary motor 17 is also installed on another surface of the pretreatment box 1. A rotary shaft 15 is installed at the output end of the rotary motor 17. One end of the rotary shaft 15 extends into the interior of the pretreatment box 1, and the rotary shaft 15 is rotatably connected to the pretreatment box 1. An electromagnetic plate 1 is installed on the circumferential side of the rotary shaft 15. 6. To facilitate the adsorption of iron filings mixed in with the screened old sand, it is easier to separate the old sand from the iron filings during subsequent discharge, further facilitating subsequent recycling. The pretreatment box 1 is also provided with an opening groove 9 on one surface. The opening groove 9 is located between the drive motor 6 and the rotating motor 17. A sliding frame 10 is slidably installed inside the opening groove 9. A screening screen 11 is installed on the bottom surface inside the sliding frame 10. Electric slide rails 22 are fixedly installed on two opposite surfaces inside the sliding frame 10. Sliding sleeves are slidably installed on one surface of the two electric slide rails 22. A connecting shaft 23 is installed between the two sliding sleeves. A grinding roller 24 is rotatably installed on the circumference of the connecting shaft 23 to thoroughly crush the small-volume lumps present after crushing.
[0028] The electromagnetic plate 16 is rotatably connected to the inner wall of the pretreatment box 1 on its periphery, and one end of the drive shaft 3 extends to the outside of the pretreatment box 1. The output end of the drive motor 6 is fixedly connected to one end of the drive shaft 3.
[0029] The other ends of the drive shaft 3 and the driven shaft 4 penetrate through the other surface of the pretreatment box 1, and the drive gear 7 is fixedly installed on the other end of the drive shaft 3.
[0030] A driven gear 8 is fixedly installed at the other end of the driven shaft 4, and the driving gear 7 and the driven gear 8 mesh with each other.
[0031] The pretreatment box 1 has two opposing surfaces welded with support plates 12. The two support plates 12 are respectively set on both sides of the lower surface of the sliding frame 10, and the lower surface of the sliding frame 10 is slidably connected to the support plates 12.
[0032] The lower surfaces of the two support plates 12 are each provided with a mounting plate 13. One end of each mounting plate 13 is fixedly connected to the inner wall of the pretreatment box 1. Vibrators 14 are fixedly installed on the upper surfaces of the two mounting plates 13, so that the specifications of the crushed old sand are uniform and it is easy to recycle and reuse later.
[0033] The upper surfaces of the two vibrators 14 are in contact with the lower surface of the screening screen 11. One end of the sliding frame 10 extends to the outside of the pretreatment box 1 through the opening groove 9. A pull plate 20 is welded to one end of the sliding frame 10, and a handle 21 is welded to one surface of the pull plate 20.
[0034] A connecting plate 18 is welded to the side of the pretreatment box 1. The connecting plate 18 is located below the rotating motor 17. Support columns 19 are welded to the lower surface of the connecting plate 18. The upper and lower surfaces of the pretreatment box 1 are open structures.
[0035] Please see Figures 1-4 As shown, this utility model is a pretreatment device for foundry waste sand. Its usage is as follows: First, waste sand is fed from the feed hopper 2 into the pretreatment box 1. At this time, the drive motor 6 is started to drive the drive shaft 3 to rotate. The drive shaft 3 drives the crushing roller 5 and the drive gear 7 to rotate. The drive gear 7 drives the driven gear 8, which in turn drives the driven shaft 4 to rotate. The driven shaft 4 drives another crushing roller 5 to rotate. The two crushing rollers 5 crush the agglomerated waste sand as they rotate. The crushed waste sand falls above the screening screen 11. Then, the electric slide rail 22 is started to drive the sliding sleeve to move back and forth, thereby driving the grinding roller 24 to move back and forth above the screening screen 11. The vibration device 14 is activated to thoroughly crush the small lumps remaining after crushing. At this time, the vibrator 14 is activated to vibrate and screen the screen 11 to avoid clogging. The sliding frame 10 facilitates the removal of unqualified waste sand for re-crushing. The screened waste sand falls above the electromagnetic plate 16. At this time, the electromagnetic plate 16 is energized and attracts the iron filings mixed in with the waste sand. Then, the rotating motor 17 is activated to drive the rotating shaft 15 to rotate, flipping the electromagnetic plate 16 and pouring the screened waste sand from below the pretreatment box 1 for later recycling. Then, the electromagnetic plate 16 is de-energized, and the magnetism disappears, causing the iron filings attracted to it to fall off, separating the iron filings from the waste sand.
[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A pretreatment device for foundry waste sand, comprising a pretreatment box (1) and a feed hopper (2), characterized in that: The feed hopper (2) is welded to the upper surface of the pretreatment box (1). A drive shaft (3) and a driven shaft (4) are rotatably mounted inside the pretreatment box (1). Crushing rollers (5) are mounted on the circumferential sides of both the drive shaft (3) and the driven shaft (4). A drive motor (6) is fixedly mounted on one surface of the pretreatment box (1). A rotating motor (17) is also mounted on another surface of the pretreatment box (1). A rotating shaft (15) is mounted at the output end of the rotating motor (17). One end of the rotating shaft (15) extends into the interior of the pretreatment box (1). The rotating shaft (15) is rotatably connected to the pretreatment box (1). An electromagnetic plate (16) is installed on the periphery of the pretreatment box (1). An opening groove (9) is also provided on one surface of the pretreatment box (1). The opening groove (9) is located between the drive motor (6) and the rotating motor (17). A sliding frame (10) is slidably installed inside the opening groove (9). A screening screen (11) is installed on the bottom surface inside the sliding frame (10). Electric slide rails (22) are fixedly installed on two opposite surfaces inside the sliding frame (10). A sliding sleeve is slidably installed on one surface of each of the two electric slide rails (22). A connecting shaft (23) is installed between the two sliding sleeves. A grinding roller (24) is rotatably installed on the periphery of the connecting shaft (23).
2. The pretreatment device for foundry waste sand according to claim 1, characterized in that, The electromagnetic plate (16) is rotatably connected to the inner wall of the pretreatment box (1), one end of the drive shaft (3) extends to the outside of the pretreatment box (1), and the output end of the drive motor (6) is fixedly connected to one end of the drive shaft (3).
3. The pretreatment device for foundry waste sand according to claim 2, characterized in that, The other end of the drive shaft (3) and the driven shaft (4) penetrates the other surface of the pretreatment box (1), and the other end of the drive shaft (3) is fixedly mounted with a drive gear (7).
4. The pretreatment device for foundry waste sand according to claim 3, characterized in that, A driven gear (8) is fixedly installed at the other end of the driven shaft (4), and the driving gear (7) and the driven gear (8) mesh with each other.
5. The pretreatment device for foundry waste sand according to claim 1, characterized in that, The pretreatment box (1) has two opposing surfaces welded with support plates (12). The two support plates (12) are respectively set on both sides of the lower surface of the sliding frame (10). The lower surface of the sliding frame (10) is slidably connected to the support plates (12).
6. The pretreatment device for foundry waste sand according to claim 5, characterized in that, The lower surfaces of the two support plates (12) are provided with mounting plates (13), one end of the two mounting plates (13) is fixedly connected to the inner wall of the pretreatment box (1), and the upper surfaces of the two mounting plates (13) are fixedly installed with vibrators (14).
7. The pretreatment device for foundry waste sand according to claim 6, characterized in that, The upper surfaces of the two vibrators (14) are in contact with the lower surface of the screening screen (11). One end of the sliding frame (10) extends to the outside of the pretreatment box (1) through the opening groove (9). A pull plate (20) is welded to one end of the sliding frame (10), and a handle (21) is welded to one surface of the pull plate (20).
8. The pretreatment device for foundry waste sand according to claim 7, characterized in that, The pretreatment box (1) has a connecting plate (18) welded to its periphery. The connecting plate (18) is located below the rotating motor (17). Support columns (19) are welded to the periphery of the lower surface of the connecting plate (18). The upper and lower surfaces of the pretreatment box (1) are open structures.