Precoated sand circulating screening equipment

Abstract

The utility model provides precoated sand circulating screening equipment, and relates to the technical field of screening equipment. Comprising a screening tank, a discharging port is formed in the bottom of the screening tank, a maintenance window is arranged on one side of the screening tank, and a base is fixedly connected to the bottom of the screening tank; a circulating screening structure is arranged at the top of the screening tank; an anti-caking structure is arranged at the bottom of the circulating screening structure; and the circulating screening structure comprises a filtering ring plate and a mounting frame, the filtering ring plate is fixedly connected with the inner wall of the screening tank, the mounting frame is fixedly connected with the inner wall of the filtering ring plate, under the action of the circulating screening structure, the filtering ring plate can conduct auxiliary filtering screening on the precoated sand, and then under the action of a grinding wheel and a push plate, the precoated sand can be effectively screened. The circular grinding and screening are carried out, so that the equipment does not need to be frequently replaced for grinding and screening, and meanwhile, the mounting frame and the filtering ring plate can be vibrated under the action of components such as the abutting balls and the hemispherical blocks, so that screening is assisted.

Description

Technical Field

[0001] This utility model relates to the field of screening equipment technology, and in particular to a membrane-coated sand circulating screening device. Background Technology

[0002] Coated sand primarily uses high-quality, carefully selected natural quartz sand as raw material, along with thermoplastic phenolic resin, hexamethylenetetramine, and reinforcing agents. The proportions are adjusted appropriately based on the user's specific technical requirements, considering factors such as curing speed, release properties, flowability, collapsibility, casting surface finish, and storage. It is one of the best molding materials for automobiles, tractors, hydraulic components, and other applications. During the production process, coated sand requires screening and grinding for recycling.

[0003] In practical work, the existing screening equipment has a relatively complete structure and function, which can basically meet the needs of daily use, but the following problems still exist:

[0004] In actual use, when screening coated sand, it is necessary to first grind the coated sand using grinding equipment, then screen it, and then grind the large particles of coated sand again using grinding equipment. This process is very time-consuming and labor-intensive.

[0005] Therefore, this utility model provides a membrane-coated sand circulating screening device. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies and provide a membrane-coated sand circulation screening device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a membrane-coated sand circulating screening device, comprising a screening tank, a discharge port at the bottom of the screening tank, a maintenance window on one side of the screening tank, and a base fixedly connected to the bottom of the screening tank; a circulating screening structure at the top of the screening tank; an anti-caking structure at the bottom of the circulating screening structure; the circulating screening structure comprising a filter ring plate and a mounting frame, the filter ring plate being fixedly connected to the inner wall of the screening tank, and the mounting frame being fixedly connected to the inner wall of the filter ring plate; the anti-caking structure comprising a stirring rod located inside the screening tank.

[0008] In a preferred embodiment, an mounting plate is fixedly connected to the outer surface of the screening tank. A drive motor is fixedly mounted on the top of the outer surface of the mounting plate. A transmission rod is fixedly connected to the output end of the drive motor. The bottom end of the transmission rod passes through the mounting frame and is rotatably connected to the top inner wall of the mounting frame. A connecting block is fixedly connected to the outer surface of the transmission rod. Two L-shaped connecting rods are symmetrically fixedly connected to the outer surface of the connecting block. One end of one L-shaped connecting rod is fixedly connected to a push plate, and one end of the other L-shaped connecting rod is fixedly connected to a wheel frame. A grinding wheel is fixedly mounted on the inner wall of the wheel frame. An auxiliary block is fixedly connected to the bottom end of the transmission rod. A fixing rod is fixedly connected to one side of the auxiliary block. A sliding cylinder is slidably connected to one end of the fixing rod. A contact ball is fixedly connected to one end of the sliding cylinder. A return spring is sleeved on the outer surface of the fixing rod. The two ends of the return spring are fixedly connected to the outer surfaces of the sliding cylinder and the auxiliary block, respectively. A hemispherical block is fixedly connected to the inner wall of the mounting frame.

[0009] The technical effects of adopting the above-mentioned further solution are as follows: Under the action of the grinding wheel, the coated sand can be ground in conjunction with the push plate. At the same time, during the grinding process, the coated sand can be filtered with the help of the filter ring plate. The ground coated sand can be screened, and the large particles of coated sand can be further ground to achieve the effect of circulating grinding and screening. At the same time, with the cooperation of components such as the abutment ball, the hemispherical block can squeeze the abutment ball. Then, under the action of the return spring, the fixed rod and the sliding cylinder, the abutment ball hits the mounting frame, thereby vibrating the filter ring plate and assisting in filtration and screening.

[0010] In a preferred embodiment, a circular locking block is fixedly connected to the bottom of the auxiliary block, a circular locking frame is snapped onto the outer surface of the circular locking block, a first insertion hole is provided on the inner wall of the circular locking block, a second insertion hole is provided on the inner wall of the circular locking frame, a threaded rod is inserted into the inner wall of the first and second insertion holes, a fixing nut is threaded to one end of the threaded rod, and a rectangular connecting block is fixedly connected to the bottom of the circular locking frame, the bottom of the rectangular connecting block is fixedly connected to the top of the stirring rod.

[0011] The technical effect of adopting the above-mentioned further solution is that, under the action of the threaded rod and the first and second insertion holes, the stirring rod can be connected to the auxiliary block, and then the stirring rod can be driven to rotate and stir under the action of the transmission rod.

[0012] In a preferred embodiment, an auxiliary connecting rod is fixedly connected to one side of the outer surface of the rectangular connecting block, and a rectangular brush plate is fixedly connected to one end of the auxiliary connecting rod.

[0013] The technical effect of adopting the above-mentioned further solution is that, under the action of the rectangular brush plate, the inner wall of the screening tank can be cleaned, preventing the coated sand from adhering to the inner wall of the screening tank and causing agglomeration and clumping.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] The circulating screening structure allows the filter ring plate to assist in filtering and screening the coated sand. Furthermore, the grinding wheel and push plate facilitate continuous grinding and screening, eliminating the need for frequent equipment changes. Simultaneously, the contact balls and hemispherical blocks vibrate the mounting frame and filter ring plate, further aiding screening. The anti-caking structure rotates the stirring rod, preventing the coated sand from clumping inside the screening tank. Finally, the rectangular brush plate prevents the coated sand from adhering to the inner wall of the screening tank. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a membrane-coated sand circulating screening device provided by this utility model;

[0017] Figure 2 A schematic diagram of the structure of the screening tank of a membrane sand circulating screening device provided by this utility model;

[0018] Figure 3 A cross-sectional view of the screening tank of a membrane-coated sand circulating screening device provided by this utility model;

[0019] Figure 4 This utility model provides a membrane-coated sand circulating screening device. Figure 3 Enlarged view of point A in the middle.

[0020] Legend:

[0021] 1. Screening tank; 2. Discharge port; 3. Maintenance window; 4. Base;

[0022] 5. Circulating screening structure; 51. Mounting plate; 52. Drive motor; 53. Transmission rod; 54. Connecting block; 55. L-shaped connecting rod; 56. Push plate; 57. Wheel frame; 58. Grinding wheel; 59. Mounting frame; 510. Filter ring plate; 511. Auxiliary block; 512. Fixing rod; 513. Sliding cylinder; 514. Contact ball; 515. Return spring; 516. Hemispherical block;

[0023] 6. Anti-caking structure; 61. Circular locking block; 62. Circular locking frame; 63. First insertion hole; 64. Second insertion hole; 65. Threaded insertion rod; 66. Fixing nut; 67. Rectangular connecting block; 68. Stirring rod; 69. Auxiliary connecting rod; 610. Rectangular brush plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4 As shown, this embodiment provides a technical solution: a coated sand circulating screening device, including a screening tank 1, a discharge port 2 at the bottom of the screening tank 1, a maintenance window 3 on one side of the screening tank 1, and a base 4 fixedly connected to the bottom of the screening tank 1; a circulating screening structure 5 is provided at the top of the screening tank 1; an anti-caking structure 6 is provided at the bottom of the circulating screening structure 5; the circulating screening structure 5 includes a filter ring plate 510 and a mounting frame 59, the filter ring plate 510 is fixedly connected to the inner wall of the screening tank 1, and the mounting frame 59 is fixedly connected to the inner wall of the filter ring plate 510; the anti-caking structure 6 includes a stirring rod 68, which is located inside the screening tank 1. Under the action of the circulating screening structure 5, the filter ring plate 510 can assist in the filtration and screening of the coated sand. Then, under the action of the grinding wheel 58 and the push plate 56, the grinding and screening can be carried out in a circulating manner, so that the equipment does not need to be frequently changed for grinding and screening. At the same time, under the action of components such as the contact ball 514 and the hemispherical block 516, the mounting frame 59 and the filter ring plate 510 can be vibrated, thereby assisting the screening. Under the action of the anti-caking structure 6, the stirring rod 68 can be driven to rotate, thereby preventing the coated sand inside the screening tank 1 from clumping. Under the action of the rectangular brush plate 610, the coated sand can be prevented from adhering to the inner wall of the screening tank 1.

[0026] Going further, such as Figure 4As shown: A mounting plate 51 is fixedly connected to the outer surface of the screening tank 1. A drive motor 52 is fixedly installed on the top of the outer surface of the mounting plate 51. A transmission rod 53 is fixedly connected to the output end of the drive motor 52. The bottom end of the transmission rod 53 passes through the mounting frame 59 and is rotatably connected to the top inner wall of the mounting frame 59. A connecting block 54 is fixedly connected to the outer surface of the transmission rod 53. Two L-shaped connecting rods 55 are symmetrically fixedly connected to the outer surface of the connecting block 54. One end of one L-shaped connecting rod 55 is fixedly connected to a push plate 56, and one end of the other L-shaped connecting rod 55 is fixedly connected to a wheel frame 57. A grinding wheel 58 is fixedly installed on the inner wall of the wheel frame 57. An auxiliary block 511 is fixedly connected to the bottom end of the transmission rod 53. A fixing rod 512 is fixedly connected to one side of the auxiliary block 511. A sliding cylinder 513 is slidably connected to one end of the fixing rod 512. A contacting element is fixedly connected to one end of the sliding cylinder 513. A return spring 515 is fitted on the outer surface of the ball 514 and the fixed rod 512. The two ends of the return spring 515 are fixedly connected to the outer surfaces of the sliding cylinder 513 and the auxiliary block 511, respectively. A hemispherical block 516 is fixedly connected to the inner wall of the mounting frame 59. Under the action of the grinding wheel 58, it can work with the push plate 56 to grind the coated sand. At the same time, during the grinding process, it can be filtered with the help of the filter ring plate 510. The ground coated sand can be screened, and large particles of coated sand can be further ground to achieve the effect of circulating grinding and screening. With the cooperation of the contact ball 514 and other components, the hemispherical block 516 can squeeze the contact ball 514. Then, under the action of the return spring 515, the fixed rod 512 and the sliding cylinder 513, the contact ball 514 hits the mounting frame 59, thereby vibrating the filter ring plate 510 and assisting in filtration and screening.

[0027] The above solutions also have the problem that the screened coated sand easily clumps together when it falls into the screening tank 1, such as... Figures 2-4 As shown: In this scheme, a circular locking block 61 is fixedly connected to the bottom of the auxiliary block 511. A circular locking frame 62 is locked to the outer surface of the circular locking block 61. A first insertion hole 63 is opened on the inner wall of the circular locking block 61. A second insertion hole 64 is opened on the inner wall of the circular locking frame 62. A threaded rod 65 is inserted into the inner wall of the first insertion hole 63 and the second insertion hole 64. A fixing nut 66 is threaded to one end of the threaded rod 65. A rectangular connecting block 67 is fixedly connected to the bottom of the circular locking frame 62. The bottom of the rectangular connecting block 67 is fixedly connected to the top of the stirring rod 68. Under the action of the threaded rod 65 and the first insertion hole 63 and the second insertion hole 64, the stirring rod 68 can be connected to the auxiliary block 511. Then, under the action of the transmission rod 53, the stirring rod 68 can be driven to rotate for stirring.

[0028] The above solutions also have the problem that the coated sand easily adheres to the inner wall of screening tank 1, such as... Figure 1 and Figure 4As shown, an auxiliary connecting rod 69 is fixedly connected to one side of the outer surface of the rectangular connecting block 67. A rectangular brush plate 610 is fixedly connected to one end of the auxiliary connecting rod 69. Under the action of the rectangular brush plate 610, the inner wall of the screening tank 1 can be cleaned to prevent the coated sand from adhering to the inner wall of the screening tank 1 and causing agglomeration and clumping.

[0029] Working principle:

[0030] like Figures 1-4 As shown:

[0031] In use: Place the coated sand inside the top filter ring plate 510, then start the drive motor 52, which drives the transmission rod 53 to rotate, which in turn drives the connecting block 54 and the L-shaped connecting rod 55 to rotate, which in turn drives the push plate 56 and the wheel frame 57 to rotate, so that the push plate 56 can push the coated sand on the top of the filter ring plate 510 flat. At this time, under the action of the grinding wheel 58 inside the wheel frame 57, the coated sand on the top of the filter ring plate 510 can be ground.

[0032] Meanwhile, the auxiliary block 511 can drive the fixed rod 512, the sliding cylinder 513, and the contact ball 514 to rotate. When the contact ball 514 contacts the hemispherical block 516, the hemispherical block 516 will exert a squeezing force on the contact ball 514. This squeezing force is oblique. The decomposition force of this squeezing force will drive the contact ball 514 and the sliding cylinder 513 to slide along the outer surface of the fixed rod 512, thereby squeezing the return spring 515. When the contact ball 514 separates from the hemispherical block 516, under the action of the return spring 515, the contact ball 514 will hit the inner wall of the mounting frame 59, thereby causing the mounting frame 59 to vibrate, assisting the filter ring plate 510 in filtering.

[0033] While the transmission rod 53 rotates, it can drive the stirring rod 68 and the auxiliary connecting rod 69 to rotate, which in turn can drive the rectangular brush plate 610 to rotate, thereby assisting in stirring and cleaning the coated sand inside the screening tank 1.

[0034] When it is necessary to disassemble or assemble the stirring rod 68, the threaded insert 65 is separated from the fixing nut 66, and the threaded insert 65 is separated from the first insertion hole 63 and the second insertion hole 64, so that the stirring rod 68 can be disassembled or assembled.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A coated sand circulating screening device, comprising a screening tank (1), characterized in that, the bottom of the screening tank (1) is provided with a discharge port (2), one side of the screening tank (1) is provided with a maintenance window (3), and the bottom of the screening tank (1) is fixedly connected with a base (4); the top of the screening tank (1) is provided with a circulating screening structure (5); the bottom of the circulating screening structure (5) is provided with an anti-caking structure (6); the circulating screening structure (5) comprises a filtering ring plate (510) and a mounting frame (59), the filtering ring plate (510) is fixedly connected with the inner wall of the screening tank (1), and the mounting frame (59) is fixedly connected with the inner wall of the filtering ring plate (510); the anti-caking structure (6) comprises a stirring rod (68), and the stirring rod (68) is located in the interior of the screening tank (1).

2. The coated sand recycling screening apparatus of claim 1, wherein: The outer surface of the screening tank (1) is fixedly connected with a mounting plate (51), the outer surface of the mounting plate (51) is fixedly provided at the top with a driving motor (52), the output end of the driving motor (52) is fixedly connected with a transmission rod (53), and the bottom end of the transmission rod (53) penetrates through the mounting frame (59) and is rotatably connected with the top inner wall of the mounting frame (59).

3. The coated sand recirculation screening apparatus of claim 2, wherein: The outer surface of the transmission rod (53) is fixedly connected with a connecting block (54), and the outer surface of the connecting block (54) is fixedly connected with two L-shaped connecting rods (55) in a symmetrical manner.

4. The coated sand recycling screening apparatus of claim 3, wherein: One end of one of the L-shaped connecting rods (55) is fixedly connected with a push plate (56), one end of the other L-shaped connecting rod (55) is fixedly connected with a wheel frame (57), and the inner wall of the wheel frame (57) is fixedly provided with a grinding wheel (58).

5. The coated sand recycling screening apparatus of claim 2, wherein: The bottom end of the transmission rod (53) is fixedly connected with an auxiliary block (511), one side of the auxiliary block (511) is fixedly connected with a fixed rod (512), one end of the fixed rod (512) is slidably connected with a sliding cylinder (513), one end of the sliding cylinder (513) is fixedly connected with a contact ball (514), the outer surface of the fixed rod (512) is sleeved with a return spring (515), both ends of the return spring (515) are fixedly connected with the outer surfaces of the sliding cylinder (513) and the auxiliary block (511), and the inner wall of the mounting frame (59) is fixedly connected with a hemispherical block (516).

6. The coated sand recycling screening apparatus of claim 5, wherein: The bottom of the auxiliary block (511) is fixedly connected with a circular clamping block (61), the outer surface of the circular clamping block (61) is clamped with a circular clamping frame (62), the inner wall of the circular clamping block (61) is provided with a first insertion hole (63), the inner wall of the circular clamping frame (62) is provided with a second insertion hole (64), the inner walls of the first insertion hole (63) and the second insertion hole (64) are inserted with a threaded insertion rod (65), one end of the threaded insertion rod (65) is threadedly connected with a fixed nut (66), the bottom of the circular clamping frame (62) is fixedly connected with a rectangular connecting block (67), and the bottom of the rectangular connecting block (67) is fixedly connected with the top end of the stirring rod (68).

7. The coated sand recirculation screening apparatus of claim 6, wherein: The outer surface side of the rectangular connecting block (67) is fixedly connected with an auxiliary connecting rod (69), one end of the auxiliary connecting rod (69) is fixedly connected with a rectangular brush plate (610).

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