A screening device for clay sand processing

Abstract

The utility model discloses a screening device for clay sand processing, which belongs to the technical field of screening devices and comprises a multi-stage screening component, wherein the multi-stage screening component comprises a first screening cylinder, a second screening cylinder and a third screening cylinder which are arranged from the inside to the outside, one end of the first screening cylinder, the second screening cylinder and the third screening cylinder are fixedly connected through an end plate, and one end of the end plate is provided with a feeding pipe for feeding clay sand into the inner cavity of the first screening cylinder; the utility model can drive the multi-stage screening component to rotate by setting a driving component, and during the rotation of the multi-stage screening component, a user can feed clay sand raw materials into the inner cavity of the first screening cylinder through the feeding pipe, and during the rotation of the multi-stage screening component, since the mesh numbers of the screening cylinders are different, the purpose of graded screening is achieved, and the graded screening is performed during the rotation process, which can reduce the situation that the screening cylinder is blocked by clay sand, and the clay sand after graded screening will be discharged to the outside through a discharge conduit.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, in particular to a screening device for clay sand processing. Background Art

[0002] Clay sand is a type of modeling sand classified by the foundry industry according to the mud content in the original sand. The industry has no specific requirements for the content of quartz and harmful impurities in clay sand. Clay sand is mainly used as an additive to molding sand and core sand for cast iron and non-ferrous metal castings to increase wet strength and improve modeling performance. It will be screened before use, but during the screening process, it is easy to get clogged, which is very troublesome to clean and will affect the overall screening efficiency.

[0003] The Chinese patent with the announcement number CN213997692U discloses a clay sand multilayer screening device, including a support plate, the top side wall of the support plate is fixedly connected to a frame, the inner cavity of the frame is equipped with a bearing, the outer side wall of the bearing is symmetrically fixedly connected to a side rod, the side wall of the hollow plate is equipped with a threaded rod, the side wall of the threaded rod is respectively matched with the through-hole plate and the leaking plate gap, and the side wall of the threaded rod is threadedly connected with a threaded block. The utility model sets a clay sand multilayer screening device. Due to the different mesh numbers of the two through-hole plates, the clay sand can be separated, and then separated through the leaking plate, which can make the screening effect better. The bearing can be rotated, which is convenient for adjusting the angle and improving the screening efficiency. At the same time, when disassembling, only the threaded block needs to be rotated to remove the whole structure. If blockage occurs during the screening process, it can be disassembled to make the cleaning process simpler and avoid affecting the overall screening efficiency.

[0004] In actual use, the clay sand screening device involved in the above patent has an inclined screening structure, so the clay sand will pass through the screening device very quickly. In this way, the clay sand with smaller particles will pass through the screening device quickly under the entrainment of the clay sand with larger particles, resulting in the inability to achieve or poor grading screening effect. Therefore, we need to propose a screening device for clay sand processing. Utility Model Content

[0005] The utility model aims to provide a screening device for clay sand processing, which has the advantage of improving the grading and screening effect of clay sand, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides a screening device for clay sand processing, comprising a multi-stage screening assembly, wherein the multi-stage screening assembly comprises a first screening drum, a second screening drum and a third screening drum arranged from the inside to the outside, one end of the first screening drum, the second screening drum and the third screening drum are fixedly connected by an end plate, one end of the end plate is equipped with a feeding pipe for feeding clay sand into the inner cavity of the first screening drum, a tiltable base for tilting the third screening drum so as to discharge the residual clay sand in its inner cavity is arranged below the third screening drum, the third screening drum is rotatably installed on the top of the tiltable base by a rotating assembly, and a driving assembly for driving the first screening drum, the second screening drum and the third screening drum to rotate for graded screening is installed on the top of the tiltable base.

[0007] Preferably, the driving assembly includes a driving motor fixedly mounted on the top of the tiltable base, a first synchronous wheel is fixedly mounted on the output shaft of the driving motor, a second synchronous wheel is fixedly mounted on the surface of the feeding pipe and directly above the first synchronous wheel, and the first synchronous wheel and the second synchronous wheel are connected by a synchronous belt transmission.

[0008] Preferably, the rotating assembly includes two sets of fixing rings fixedly mounted on the surface of the third screening drum, and limiting support frames are fixedly mounted on the surface of the third screening drum and on both sides of the fixing rings, and the bottom of the limiting support frame is fixedly connected to the top of the tiltable base.

[0009] Preferably, the tiltable base includes a movable plate fixedly mounted on the bottom of the limiting support frame, a bottom plate is arranged below the movable plate, one end of the bottom of the movable plate is movably connected to the top of the bottom plate through a hinge assembly, a support column is fixedly mounted on one side of the top of the bottom plate, the top of the support column contacts with the bottom of the movable plate, and an operating rod is fixedly mounted on one side of the movable plate.

[0010] Preferably, the hinge assembly includes two groups of hinge seats respectively installed on the bottom of the movable plate and the top of the base plate, a hinge shaft is provided between the movable plate and the base plate, and the surface of the hinge shaft is rotatably connected to the surfaces of the two groups of hinge seats respectively.

[0011] Preferably, the first screening cylinder, the second screening cylinder and the third screening cylinder are coaxially arranged, and the surface screen mesh numbers of the first screening cylinder, the second screening cylinder and the third screening cylinder increase sequentially.

[0012] Preferably, a discharge conduit is fixedly installed at one end of the first screening cylinder, the second screening cylinder and the third screening cylinder, and the lengths of the three groups of conduits are arranged to decrease from the inside to the outside, and a support rod is fixedly installed between the first screening cylinder, the second screening cylinder and the third screening cylinder to support and fix them together.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model can drive the multi-stage screening component to rotate through the setting of the driving component. During the rotation of the multi-stage screening component, the user can feed clay sand raw materials into the inner cavity of the first screening cylinder through the feeding pipe. During the rotation of the multi-stage screening component, since the mesh numbers of each screening cylinder of the multi-stage screening component are different, the purpose of graded screening is achieved. In addition, the graded screening during the rotation process can alleviate the situation where the screening cylinder is blocked by clay sand. The clay sand after graded screening will be discharged to the outside through the discharge conduit. Through the setting of the tiltable base, when the residual clay sand in the graded screening component cannot be discharged, the user can tilt the graded screening component through the tiltable base so that the residual clay sand inside the graded screening component can be discharged smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the drive assembly of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the grading and screening assembly of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the tiltable base of the utility model.

[0019] In the figure: 1. first screening cylinder; 2. second screening cylinder; 3. third screening cylinder; 4. end plate; 5. feeding pipe; 6. driving motor; 7. first synchronous wheel; 8. second synchronous wheel; 9. synchronous belt; 10. fixing ring; 11. limiting support frame; 12. movable plate; 13. bottom plate; 14. supporting column; 15. operating lever; 16. articulated seat; 17. articulated shaft; 18. discharge conduit; 19. supporting rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 4The utility model provides a screening device for processing clay sand, comprising a multi-stage screening assembly, wherein the multi-stage screening assembly comprises a first screening drum 1, a second screening drum 2 and a third screening drum 3 arranged from the inside to the outside, the first screening drum 1, the second screening drum 2 and the third screening drum 3 are coaxially arranged, and the surface screen mesh numbers of the first screening drum 1, the second screening drum 2 and the third screening drum 3 increase successively, one end of the first screening drum 1, the second screening drum 2 and the third screening drum 3 is fixedly connected by an end plate 4, one end of the end plate 4 is provided with a feeding pipe 5 for feeding clay sand into the inner cavity of the first screening drum 1, one end of the first screening drum 1, the second screening drum 2 and the third screening drum 3 are all fixedly installed with a discharge conduit 18, and the lengths of the three groups of conduits are arranged to decrease from the inside to the outside, and a support rod 19 for supporting and fixing the first screening drum 1, the second screening drum 2 and the third screening drum 3 is fixedly installed between them.

[0022] In the present embodiment, the screening cylinders in the multi-stage screening assembly are fixed together by support rods 19 and end plates 4. A feeding pipe 5 is installed at one end of the end plate 4. The user can feed clay sand to be screened into the first screening cylinder 1 through the feeding pipe 5. The clay sand after graded screening can be discharged by setting the discharge conduit 18. In the present embodiment, the mesh sizes of the surfaces of the first screening cylinder 1, the second screening cylinder 2 and the third screening cylinder 3 increase successively, so as to achieve the purpose of graded screening. In the present embodiment, only three groups of screening cylinders are taken as examples. If more detailed graded screening is required in actual use, additional screening cylinders can be added as needed.

[0023] Preferably, a tiltable base is provided below the third screening drum 3 for tilting it so as to discharge the residual clay sand in its inner cavity, the tiltable base includes a movable plate 12 fixedly mounted on the bottom of the limiting support frame 11, a bottom plate 13 is provided below the movable plate 12, one end of the bottom of the movable plate 12 is movably connected to the top of the bottom plate 13 through a hinge assembly, the hinge assembly includes two groups of hinge seats 16 respectively installed on the bottom of the movable plate 12 and the top of the bottom plate 13, a hinge shaft 17 is provided between the movable plate 12 and the bottom plate 13, the surfaces of the hinge shaft 17 are rotatably connected to the surfaces of the two groups of hinge seats 16, a support column 14 is fixedly mounted on one side of the top of the bottom plate 13, the top of the support column 14 is in contact with the bottom of the movable plate 12, and an operating rod 15 is fixedly mounted on one side of the movable plate 12.

[0024] By setting the tiltable base, after the graded screening is completed, if there is still clay sand remaining inside each screening cylinder, the movable plate 12 can be moved by the operating rod 15 to drive the graded screening assembly to tilt so that the clay sand remaining inside can be discharged to the outside.

[0025] Among them, a driving component for driving the first screening drum 1, the second screening drum 2 and the third screening drum 3 to rotate for graded screening is installed on the top of the tiltable base, and the driving component includes a driving motor 6 fixedly installed on the top of the tiltable base, and the output shaft of the driving motor 6 is fixedly installed with a first synchronous wheel 7. A second synchronous wheel 8 is fixedly installed on the surface of the feeding pipe 5 and directly above the first synchronous wheel 7. The first synchronous wheel 7 and the second synchronous wheel 8 are connected by a synchronous belt 9.

[0026] Through the setting of the driving component, when the user puts clay sand into the first screening drum 1 through the feeding pipe, the user can turn on the driving motor 6 through the external controller, and the output shaft of the driving motor 6 will drive the second synchronous wheel 8 to rotate through the first synchronous wheel 7 and the synchronous belt 9, and then drive the grading screening component to rotate through the end plate 4. During the rotation process, the purpose of grading and screening the clay sand can be achieved, and the screened clay sand can be classified and discharged to the outside through the corresponding discharge duct 18.

[0027] It is worth mentioning that the third screening drum 3 is rotatably installed on the top of the tiltable base through a rotating assembly. The rotating assembly includes two groups of fixed rings 10 fixedly installed on the surface of the third screening drum 3. The surface of the third screening drum 3 and both sides of the fixed ring 10 are fixedly installed with a limiting support frame 11. The bottom of the limiting support frame 11 is fixedly connected to the top of the tiltable base. Through the setting of the rotating assembly, the rotation stability of the graded screening assembly can be improved. During the rotation, it will drive the fixed ring 10 to rotate, and the fixed ring 10 is limited by the limiting support frame 11 to avoid the graded screening assembly from moving during the rotation.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screening device for clay sand processing, characterized in that: The invention comprises a multi-stage screening assembly, wherein the multi-stage screening assembly comprises a first screening drum (1), a second screening drum (2) and a third screening drum (3) arranged from the inside to the outside, one end of the first screening drum (1), the second screening drum (2) and the third screening drum (3) being fixedly connected via an end plate (4), one end of the end plate (4) being provided with a feeding pipe (5) for feeding clay sand into the inner cavity of the first screening drum (1), a tiltable base for tilting the third screening drum (3) so as to discharge the clay sand remaining in the inner cavity thereof being provided below the third screening drum (3), the third screening drum (3) being rotatably mounted on the top of the tiltable base via a rotating assembly, and a driving assembly for driving the first screening drum (1), the second screening drum (2) and the third screening drum (3) to rotate for graded screening being provided on the top of the tiltable base.

2. A screening device for clay sand processing according to claim 1, characterized in that: The driving assembly comprises a driving motor (6) fixedly mounted on the top of the tiltable base, a first synchronous wheel (7) fixedly mounted on the output shaft of the driving motor (6), a second synchronous wheel (8) fixedly mounted on the surface of the feeding pipe (5) and located directly above the first synchronous wheel (7), and the first synchronous wheel (7) and the second synchronous wheel (8) are connected in transmission via a synchronous belt (9).

3. A screening device for clay sand processing according to claim 1, characterized in that: The rotating assembly comprises two sets of fixing rings (10) fixedly mounted on the surface of the third screening drum (3); a limiting support frame (11) is fixedly mounted on the surface of the third screening drum (3) and on both sides of the fixing rings (10); the bottom of the limiting support frame (11) is fixedly connected to the top of the tiltable base.

4. A screening device for clay sand processing according to claim 3, characterized in that: The tiltable base comprises a movable plate (12) fixedly mounted on the bottom of the position-limiting support frame (11); a bottom plate (13) is arranged below the movable plate (12); one end of the bottom of the movable plate (12) is movably connected to the top of the bottom plate (13) via a hinge assembly; a support column (14) is fixedly mounted on one side of the top of the bottom plate (13); the top of the support column (14) contacts the bottom of the movable plate (12); and an operating rod (15) is fixedly mounted on one side of the movable plate (12).

5. A screening device for clay sand processing according to claim 4, characterized in that: The hinge assembly comprises two groups of hinge seats (16) respectively mounted on the bottom of the movable plate (12) and the top of the bottom plate (13); a hinge shaft (17) is arranged between the movable plate (12) and the bottom plate (13); and the surface of the hinge shaft (17) is rotatably connected to the surfaces of the two groups of hinge seats (16).

6. A screening device for clay sand processing according to claim 1, characterized in that: The first screening cylinder (1), the second screening cylinder (2) and the third screening cylinder (3) are coaxially arranged, and the surface screen mesh numbers of the first screening cylinder (1), the second screening cylinder (2) and the third screening cylinder (3) increase in sequence.

7. A screening device for clay sand processing according to claim 1, characterized in that: A discharge conduit (18) is fixedly mounted on one end of each of the first screening drum (1), the second screening drum (2) and the third screening drum (3), and the lengths of the three groups of conduits are arranged to decrease from the inside to the outside, and a support rod (19) is fixedly mounted between the first screening drum (1), the second screening drum (2) and the third screening drum (3) for supporting and fixing them together.

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