Casting sand recycling and screening equipment

Abstract

The utility model relates to the technical field of screening equipment, and discloses foundry sand recycling and screening equipment which comprises a screening bin, a plurality of first fixing blocks are fixedly connected to the inner wall of the screening bin, first electric telescopic rods are fixedly connected to the tops of the first fixing blocks, and the output ends of the first electric telescopic rods are fixedly connected with racks. The top of each rack is provided with a gear, the gears are meshed with the racks, the interiors of the gears are fixedly connected with first connecting columns, the outer walls of the first connecting columns are fixedly connected with first connecting blocks, and the tops of the first connecting blocks are fixedly connected with fixing plates. According to the casting sand cleaning and collecting device, large casting sand obtained after surface screening is poured into the second collecting box through overturning movement of the screen, cleaning and collecting of the large casting sand are achieved, and the problem that traditional equipment cannot effectively collect and clean the large casting sand on the top of the screen in time, and consequently screening parts are blocked is solved; and the use convenience of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of screening equipment, in particular to a screening equipment for the recycling of foundry sand. Background Art

[0002] Foundry sand is one of the basic raw materials used in sand casting. The quality of foundry sand has a direct impact on the quality of castings. Poor quality may lead to defects such as porosity, sand holes, sand adhesion, and sand inclusion in the castings. In actual applications, it is necessary to select the appropriate type and proportion of foundry sand according to specific casting requirements and the characteristics of the castings to ensure high-quality castings. At the same time, with the continuous development of casting technology, some new foundry sand materials and treatment methods have emerged to meet higher production requirements and environmental protection standards. During the recycling process of foundry sand, screening equipment is needed to screen and classify it;

[0003] The screening equipment for the recycling of foundry sand is a device that plays an important role in the casting industry. Common screening equipment for the recycling of foundry sand includes vibrating screens, drum screens, etc. The vibrating screen screens the sand grains in layers on the screen through vibration; the drum screen drives the sand grains for screening by the rotation of the drum. The screening equipment for the recycling of foundry sand is of great significance for improving the utilization rate of foundry sand, reducing production costs, and protecting the environment;

[0004] However, in the traditional screening process of foundry sand, it is difficult to collect and clean the larger pieces of foundry sand accumulated on the surface of the screening components. If not cleaned for a long time, it is easy to block the holes of the screening components, which has a certain impact on subsequent screening and reduces the screening efficiency of the equipment. Therefore, a screening equipment for the recycling of foundry sand is proposed to solve the above problems. Content of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a screening equipment for the recycling of foundry sand, aiming to improve the problem that the traditional equipment is difficult to collect and clean the filtered foundry sand, thus having a certain impact on subsequent screening.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A screening device for recycling foundry sand includes a screening bin. A plurality of first fixing blocks are fixedly connected to the inner wall of the screening bin. Electric telescopic rods one are fixedly connected to the tops of the first fixing blocks. Rack bars are fixedly connected to the output ends of the electric telescopic rods one. Gears are arranged on the tops of the rack bars. The gears and the rack bars are meshed with each other. A first connecting column is fixedly connected to the inside of the gear. A first connecting block is fixedly connected to the outer wall of the first connecting column. A fixing plate is fixedly connected to the top of the first connecting block. A sieve mesh is fixedly connected to the inner wall of the fixing plate. A second connecting block is fixedly connected to the bottom of the fixing plate. A second connecting column is fixedly connected to the inside of the second connecting block. A plurality of springs are fixedly connected to the inside of the screening bin. A clamping ball is fixedly connected to one side of the spring. A second collection box is fixedly connected to the top of the first fixing block. A leveling component is arranged inside the screening bin for leveling the foundry sand;

[0008] As a further description of the above technical solution:

[0009] The leveling component includes a push plate. The outer wall of the push plate is arranged inside the screening bin. The outer walls of the rack bars are all slidably connected to the inside of the first fixing blocks;

[0010] As a further description of the above technical solution:

[0011] A feed hopper is fixedly connected to the top of the screening bin. A discharge hopper is fixedly connected to the bottom of the screening bin. Both ends of the first connecting column are slidably connected to the inside of the screening bin. Both ends of the second connecting column are slidably connected to the inside of the screening bin;

[0012] As a further description of the above technical solution:

[0013] A plurality of shock-absorbing brackets are fixedly connected to the outer wall of the screening bin. A bottom plate is fixedly connected to the bottom of the shock-absorbing brackets. A first collection box is fixedly connected to the top of the bottom plate;

[0014] As a further description of the above technical solution:

[0015] A second fixing block is fixedly connected to the outer wall of the screening bin. An electric telescopic rod two is fixedly connected to the top of the second fixing block;

[0016] As a further description of the above technical solution:

[0017] A connecting plate is fixedly connected to the output end of the electric telescopic rod two. The outer wall of the connecting plate is arranged inside the screening bin;

[0018] As a further description of the above technical solution:

[0019] The bottom of the connecting plate is fixedly connected to the top of the push plate. The bottom of the push plate is arranged on the top of the fixing plate;

[0020] As a further description of the above technical solution:

[0021] A plurality of sliding bars are fixedly connected inside the connecting plate, and both ends of the sliding bars are fixedly connected to the inner wall of the screening bin.

[0022] The utility model has the following beneficial effects:

[0023] 1. In the utility model, the electric telescopic rod I drives the rack to move, thereby driving the gear to rotate. The rotational movement of the gear will simultaneously drive the screen on the inner wall of the fixed plate to flip through the connecting column I and the connecting block I. The flipped movement of the screen is used to pour the larger-sized casting sand after surface screening into the inside of the collection box II, realizing the cleaning and collection of the larger-sized casting sand, solving the problem that traditional equipment is difficult to collect and clean the larger-sized casting sand on the top of the screen in a timely and effective manner, thereby causing blockage to the screening component, and improving the convenience of equipment use.

[0024] 2. In the utility model, the electric telescopic rod II drives the connecting plate to slide on the outer wall of the sliding bar. While the connecting plate moves, it will drive the push plate to move on the top of the screen. The connecting plate is used to block the pouring of the casting sand to prevent it from falling outside the planned range, and the movement of the push plate is used to evenly spread the accumulated casting sand on the outer wall of the screen, solving the problem that during the use of traditional equipment, the casting sand accumulates in one place, prolonging the screening time required, and improving the screening efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a three-dimensional schematic diagram of a casting sand recycling and reusing screening device proposed by the utility model;

[0026] Figure 2 is a schematic diagram of the internal structure of the screening bin of a casting sand recycling and reusing screening device proposed by the utility model;

[0027] Figure 3 is a schematic diagram of the screen structure of a casting sand recycling and reusing screening device proposed by the utility model;

[0028] Figure 4 is a schematic diagram of the push plate structure of a casting sand recycling and reusing screening device proposed by the utility model;

[0029] Figure 5 is a schematic diagram of the ball structure of a casting sand recycling and reusing screening device proposed by the utility model.

[0030] Legend Explanation:

[0031] 1. Screening bin; 2. Feed hopper; 3. Discharge hopper; 4. Shock-absorbing bracket; 5. Bottom plate; 6. Collection box 1; 7. Fixed block 1; 8. Electric telescopic rod 1; 9. Rack; 10. Gear; 11. Connecting column 1; 12. Connecting block 1; 13. Fixed plate; 14. Screen; 15. Connecting block 2; 16. Connecting column 2; 17. Spring; 18. Ball catch; 19. Fixed block 2; 20. Electric telescopic rod 2; 21. Connecting plate; 22. Pushing plate; 23. Slide bar; 24. Collection box 2. Detailed implementation mode

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1:

[0034] Refer to Figure 2 、 Figure 3 and Figure 5, An embodiment provided by the present utility model: A screening device for the recycling and reuse of casting sand, including a screening bin 1. The screening bin 1 serves as the main structure of the device, providing installation and operating space for internal components. A plurality of first fixing blocks 7 are fixedly connected to the inner wall of the screening bin 1. These first fixing blocks 7 play a role in stable support and connection. Electric telescopic rods 8 are fixedly connected to the tops of the first fixing blocks 7. The electric telescopic rods 8 drive the lead screw to rotate through the internal motor, converting the rotational motion into linear motion, thereby realizing the telescoping of the output end. The output ends of the electric telescopic rods 8 are fixedly connected with racks 9. When the electric telescopic rods 8 telescope, they drive the racks 9 to perform linear movement in the horizontal direction. Gears 10 are arranged on the tops of the racks 9, and the gears 10 are meshed with the racks 9. When the racks 9 move horizontally, they drive the gears 10 to rotate. A first connecting column 11 is fixedly connected inside the gear 10. A first connecting block 12 is fixedly connected to the outer wall of the first connecting column 11. A fixing plate 13 is fixedly connected to the top of the first connecting block 12. When the gear 10 rotates, it drives the fixing plate 13 to perform corresponding actions through the first connecting column 11 and the first connecting block 12. A screen 14 is fixedly connected to the inner wall of the fixing plate 13. The screen 14 is used for screening and separating the casting sand. A second connecting block 15 is fixedly connected to the bottom of the fixing plate 13. A second connecting column 16 is fixedly connected inside the second connecting block 15. A plurality of springs 17 are fixedly connected inside the screening bin 1. Based on its own elastic deformation characteristics, the springs 17 can store and release energy. A clamping ball 18 is fixedly connected to one side of the springs 17. When subjected to external forces, the springs 17 will deform, thereby pushing the clamping ball 18 to move. A second collection box 24 is fixedly connected to the top of the first fixing block 7, used for collecting specific materials after screening. A leveling component is arranged inside the screening bin 1, and the leveling component is used for leveling the casting sand. The leveling component includes a push plate 22. The outer wall of the push plate 22 is arranged inside the screening bin 1 and is pushed by an external driving device to move, realizing the leveling of the casting sand. The outer walls of the racks 9 are all slidably connected inside the first fixing blocks 7, ensuring the stability and linearity of the movement of the racks 9. A feed hopper 2 is fixedly connected to the top of the screening bin 1, used for adding the casting sand to be screened into the device. A discharge hopper 3 is fixedly connected to the bottom of the screening bin 1, and the screened casting sand is discharged from here. Both ends of the first connecting column 11 are slidably connected inside the screening bin 1, enabling the first connecting column 11 to rotate inside the screening bin 1. Both ends of the second connecting column 16 are slidably connected inside the screening bin 1, providing stable guidance for the flipping action of the fixing plate 13.

[0035] Specifically: After the screening device finishes its work, start the first electric telescopic rod 8. The output end of the first electric telescopic rod 8 drives the rack 9 to move, thereby driving the gear 10 to perform a corresponding rotational movement. During the rotation of the gear 10, the fixing plate 13 is used to drive the screen 14 to perform a flipping movement. During the flipping process of the fixing plate 13, the connecting column two 16 is driven by the connecting block two 15 to slide inside the screening bin 1. When the connecting column two 16 slides to the position where the clamping ball 18 is located, relying on the thrust of the spring 17, the clamping ball 18 is pushed to move towards the inside of the connecting column two 16, and the clamping ball 18 is used to perform a clamping operation on the connecting column two 16. After the screen 14 finishes flipping, the larger-sized casting sand on its surface will fall into the inside of the second collection box 24 due to the influence of gravity, thus successfully achieving the effective collection of larger casting sand.

[0036] Embodiment 2:

[0037] Refer to Figure 1 and Figure 4 As shown in [figures] and [figures], a plurality of shock-absorbing brackets 4 are fixedly connected to the outer wall of the screening bin 1. The shock-absorbing brackets 4 are usually made of materials with good elasticity and shock-absorbing performance. Its working principle is to absorb and reduce the vibration and impact force generated during the operation of the screening bin 1 through its own elastic deformation, thereby reducing the impact on the surrounding environment and ensuring the stability and reliability of the equipment. The bottom of the shock-absorbing bracket 4 is firmly fixedly connected to the bottom plate 5. The bottom plate 5, as a basic component for bearing and supporting, provides a stable placement plane for the entire equipment. A first collection box 6 is fixedly connected to the top of the bottom plate 5 for collecting specific materials. A second fixing block 19 is also fixedly connected to the outer wall of the screening bin 1. The second fixing block 19 plays a role in connection and support. An electric telescopic rod two 20 is fixedly connected to the top of the second fixing block 19. The electric telescopic rod two 20 drives the screw rod to rotate through the internal motor, converting the rotational movement into a linear movement, thereby realizing the expansion and contraction of the output end. The output end of the electric telescopic rod two 20 is fixedly connected to the connecting plate 21. The outer wall of the connecting plate 21 is arranged inside the screening bin 1. When the electric telescopic rod two 20 expands and contracts, it can drive the connecting plate 21 to perform a linear movement inside the screening bin 1. The bottom of the connecting plate 21 is fixedly connected to the top of the pushing plate 22. The bottom of the pushing plate 22 is arranged on the top of the fixing plate 13. A plurality of sliding strips 23 are fixedly connected to the inside of the connecting plate 21. The sliding strips 23 are usually made of wear-resistant and smooth-surfaced materials. The two ends of the sliding strips 23 are fixedly connected to the inner wall of the screening bin 1. Its function is to provide guidance and limit for the movement of the connecting plate 21, ensuring that the connecting plate 21 can move smoothly along the predetermined linear trajectory.

[0038] Specifically, during the operation of the screening device, the foundry sand is poured into the outer wall of the screen 14 inside the screening bin 1 through the feed hopper 2. The push plate 22 and the connecting plate 21 are fully utilized to effectively block the foundry sand, aiming to prevent the foundry sand from accidentally falling into the second collection box 24 without being screened. After all the foundry sand is poured, the second electric telescopic rod 20 is started. The output end of the second electric telescopic rod 20 drives the connecting plate 21 to move. At the same time, the sliding strip 23 is used to limit the connecting plate 21, ensuring that the connecting plate 21 can move along the established track and direction. During the movement of the connecting plate 21, it will drive the push plate 22 to slide smoothly on the surface of the foundry sand, so that the foundry sand can be evenly spread on the surface of the screen 14, effectively avoiding the bad situation of foundry sand accumulation.

[0039] Working principle: After the screening device finishes working, the first electric telescopic rod 8 is started. The output end of the first electric telescopic rod 8 drives the rack 9 to move, thereby driving the gear 10 to perform corresponding rotational motion. During the rotation of the gear 10, the screen 14 is driven to perform a flipping motion through the fixing plate 13. During the flipping process of the fixing plate 13, the connecting column two 16 is driven to slide inside the screening bin 1 through the connecting block two 15. When the connecting column two 16 slides to the position of the clamping ball 18, the spring 17 is used to push the clamping ball 18 to move into the connecting column two 16, and the clamping ball 18 is used to position the connecting column two 16. After the screen 14 finishes flipping, the larger foundry sand on the surface falls into the second collection box 24 under the influence of gravity, realizing the collection of the larger foundry sand. During the operation of the screening device, the foundry sand is poured into the outer wall of the screen 14 inside the screening bin 1 through the feed hopper 2. The push plate 22 and the connecting plate 21 are used to block the foundry sand to prevent it from falling into the second collection box 24. After the foundry sand is poured, the second electric telescopic rod 20 is started. The output end of the second electric telescopic rod 20 drives the connecting plate 21 to move. The sliding strip 23 is used to limit the connecting plate 21. While the connecting plate 21 is moving, it drives the push plate 22 to slide on the surface of the foundry sand, making the foundry sand evenly spread on the surface of the screen 14 and avoiding the accumulation of foundry sand.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A screening device for the recycling of foundry sand, comprising a screening bin (1), characterized in that: The inner wall of the screening bin (1) is fixedly connected with a plurality of first fixing blocks (7). The tops of the first fixing blocks (7) are fixedly connected with first electric telescopic rods (8). The output ends of the first electric telescopic rods (8) are fixedly connected with racks (9). The tops of the racks (9) are each provided with a gear (10). The gears (10) and the racks (9) are meshed with each other. The inside of the gears (10) is fixedly connected with a first connecting column (11). The outer wall of the first connecting column (11) is fixedly connected with a first connecting block (12). The top of the first connecting block (12) is fixedly connected with a fixing plate (13). The inner wall of the fixing plate (13) is fixedly connected with a sieve mesh (14). The bottom of the fixing plate (13) is fixedly connected with a second connecting block (15). The inside of the second connecting block (15) is fixedly connected with a second connecting column (16). A plurality of springs (17) are fixedly connected inside the screening bin (1). One side of the springs (17) is fixedly connected with clamping balls (18). The top of the first fixing block (7) is fixedly connected with a second collection box (24). A leveling assembly is arranged inside the screening bin (1), and the leveling assembly is used for leveling the casting sand.

2. The screening device for recycling and reusing foundry sand according to claim 1, characterized in that: The leveling assembly includes a push plate (22). The outer wall of the push plate (22) is arranged inside the screening bin (1). The outer walls of the racks (9) are each slidably connected inside the first fixing block (7).

3. A screening device for recycling and reusing foundry sand according to claim 1, characterized in that: The top of the screening bin (1) is fixedly connected with a feed hopper (2). The bottom of the screening bin (1) is fixedly connected with a discharge hopper (3). Both ends of the first connecting column (11) are slidably connected inside the screening bin (1). Both ends of the second connecting column (16) are slidably connected inside the screening bin (1).

4. A screening device for recycling and reusing foundry sand according to claim 1, characterized in that: The outer wall of the screening bin (1) is fixedly connected with a plurality of shock-absorbing brackets (4). The bottoms of the shock-absorbing brackets (4) are fixedly connected with a bottom plate (5). The top of the bottom plate (5) is fixedly connected with a first collection box (6).

5. The screening device for recycling and reusing foundry sand according to claim 2, characterized in that: The outer wall of the screening bin (1) is fixedly connected with a second fixing block (19). The top of the second fixing block (19) is fixedly connected with a second electric telescopic rod (20).

6. The screening device for recycling and reusing foundry sand according to claim 5, characterized in that: The output end of the second electric telescopic rod (20) is fixedly connected with a connecting plate (21). The outer wall of the connecting plate (21) is arranged inside the screening bin (1).

7. A screening device for the recycling of foundry sand according to claim 6, characterized in that: The bottom of the connecting plate (21) is fixedly connected to the top of the push plate (22). The bottom of the push plate (22) is arranged on the top of the fixing plate (13).

8. A screening device for recycling and reusing foundry sand according to claim 6, characterized in that: A plurality of sliding strips (23) are fixedly connected inside the connecting plate (21). Both ends of the sliding strips (23) are fixedly connected to the inner wall of the screening bin (1).

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