Foundry molding sand screening device

Abstract

The utility model discloses a foundry sand screening device, and particularly relates to the field of foundry sand screening devices, which comprises a screening box, a triangular screen is slidably connected to the inner side of the screening box, a first motor is fixedly mounted on one side of the screening box, a transmission wheel is fixedly mounted at the output end of the first motor, and a convex rod is fixedly mounted on one side of the transmission wheel. A sliding groove frame is slidably connected to the outer side of the protruding rod, a connecting rod is fixedly installed on one side of the sliding groove frame, the connecting rod is slidably connected into the screening box, the connecting rod is fixedly installed on one side of a triangular screen, and blocking cloth is fixedly installed at the bottom of the triangular screen. According to the sand screening device, the triangular screen is arranged, the triangular screen moves left and right in a reciprocating mode so as to screen sand, and the sand remaining on the top of the triangular screen flows on the top of the triangular screen after screening, falls on the surface of the flow guiding piece and flows back into the sand storage box through the first conveying pipe under guiding of the flow guiding piece to achieve secondary screening.

Description

Technical Field

[0001] The utility model relates to the technical field of foundry sand screening devices, and more specifically, to a foundry sand screening device. Background Art

[0002] Foundry sand plays a vital role in the casting process. The casting of the workpiece is completed by making the foundry sand into the required shape and then pouring liquid metal into the sand. In order to ensure that the sand meets the use standards, the sand needs to be screened and the screened sand needs to be screened again to avoid the sand that meets the standards from being discarded. When the existing screening device performs secondary screening on the sand, the sand needs to be manually collected and then put into the screening device. This method not only increases the use of manpower but also reduces the screening efficiency.

[0003] According to a foundry sand screening device disclosed in China Utility Model Publication No. CN210450819U, its structure includes a machine body, a motor, a fixed frame, a screen drum, a support frame, and a rotating shaft. An inlet is provided on the upper right side of the support frame, and the inlet is connected to the right side of the screen drum, and a discharge port is provided on the left side of the machine body. While the rotating shaft drives the screen drum to rotate and screen through the support frame, the rotating shaft is driven by meshing with the sun gear, and its planetary gear sleeve is limited on the limit rod of the steel frame rod, so that the planetary gear reverses, and at the same time drives the connecting plate to rotate in the opposite direction of the screen drum, which is conducive to turning the sand and greatly improving the screening efficiency. However, when this arrangement is used for secondary screening of sand, it is necessary to manually collect the sand and then put it into the screening device. This method will not only increase the use of manpower but also reduce the screening efficiency. Therefore, in view of this problem, how to design a foundry sand screening device has become a problem that we currently need to solve. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the utility model provides a foundry sand screening device, which screens the sand by setting a triangular screen, and the triangular screen reciprocates left and right. After screening, the sand remaining on the top of the triangular screen flows on the top of the triangular screen and falls on the surface of the guide member. Under the guidance of the guide member, it flows back into the interior of the sand storage box through the first conveying pipe to achieve re-screening to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a foundry sand screening device, comprising a screening box, a triangular screen is slidably connected to the inner side of the screening box, a first motor is fixedly installed on one side of the screening box, a transmission wheel is fixedly installed on the output end of the first motor, a convex rod is fixedly installed on one side of the transmission wheel, a slide frame is slidably connected to the outer side of the convex rod, a connecting rod is fixedly installed on one side of the slide frame, the connecting rod is slidably connected to the inside of the screening box, the connecting rod is fixedly installed on one side of the triangular screen, a barrier cloth is fixedly installed on the bottom of the triangular screen, a partition is fixedly installed on the bottom of the barrier cloth, and the partition is fixedly installed on the inside of the screening box.

[0006] In a preferred embodiment, a flow guide is fixedly installed inside the screening box, and the flow guide is fixedly installed on one side of the partition.

[0007] In a preferred embodiment, one side of the screening box is connected to a first delivery pipe, and one end of the first delivery pipe is connected to a sand storage box.

[0008] In a preferred embodiment, a second delivery pipe is fixedly installed inside the sand storage box, and an auger delivery member is rotatably connected inside the second delivery pipe.

[0009] In a preferred embodiment, a second motor is fixed to the bottom of the sand storage box, and the auger conveying member is fixedly installed at the output end of the second motor.

[0010] In a preferred embodiment, a flow guide pipe is provided on one side of the second conveying pipe, and a sand discharge member is slidably connected to the bottom of the flow guide pipe.

[0011] In a preferred embodiment, an extension plate is fixedly mounted on one side of the sand producing member, an electric cylinder is fixedly mounted on the bottom of the guide tube, and the extension plate is fixedly mounted on the output end of the electric cylinder.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model screens the sand by setting a triangular screen, which reciprocates left and right. The sand that meets the standards falls through the triangular screen and flows out from the inside of the screening box. The sand remaining on the top of the triangular screen flows on the top of the triangular screen and falls on the surface of the guide member. Under the guidance of the guide member, it flows back into the inside of the sand storage box through the first conveying pipe, so that the sand can be conveyed to the triangular screen again through the auger conveying member, and the sand can be screened for the second time.

[0014] 2. The utility model provides a sand-discharging part, and when screening the sand, the electric cylinder is started to drive the sand-discharging part to move back and forth, so that the sand can be evenly sprinkled on the top of the triangular screen when the sand-discharging part discharges sand, thereby avoiding the flowed sand being in the half area of ​​the triangular screen, and then there is more sand in the half area of ​​the triangular screen, resulting in a large amount of qualified sand not being screened. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 2 For this utility model Figure 1 A-section structure enlarged view.

[0017] Figure 3 For this utility model Figure 1 Enlarged view of the structure of part B.

[0018] Figure 4 It is a schematic diagram of the back structure of the utility model.

[0019] Figure 5 For this utility model Figure 4 Enlarged view of the C structure.

[0020] The accompanying drawings are marked as follows: 1. screening box; 2. triangular screen; 3. first motor; 4. transmission wheel; 5. convex rod; 6. slide frame; 7. barrier cloth; 8. partition; 9. guide piece; 10. first conveying pipe; 11. sand storage box; 12. second conveying pipe; 13. auger conveying piece; 14. second motor; 15. guide pipe; 16. sand discharge piece; 17. extension plate; 18. electric cylinder; 19. connecting rod. DETAILED DESCRIPTION

[0021] 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.

[0022] Refer to the instruction manual Figure 1-5 ,like Figure 1 As shown, a foundry sand screening device according to an embodiment of the utility model comprises a screening box 1, a triangular screen 2 is slidably connected to the inner side of the screening box 1, and a first motor 3 is fixedly installed on one side of the screening box 1. Figure 2As shown, a transmission wheel 4 is fixedly installed at the output end of the first motor 3, a convex rod 5 is fixedly installed on one side of the transmission wheel 4, a chute frame 6 is slidably connected to the outer side of the convex rod 5, a connecting rod 19 is fixedly installed on one side of the chute frame 6, the connecting rod 19 is slidably connected to the inside of the screening box 1, and the connecting rod 19 is fixedly installed on one side of the triangular screen 2, as shown in FIG. Figure 3 As shown, a barrier cloth 7 is fixedly installed at the bottom of the triangular screen 2. Through the setting of the barrier cloth 7, qualified sand and sand that needs to be screened again are separated. At the same time, the barrier cloth 7 can maintain connection with the triangular screen 2 when the triangular screen 2 is working. A partition plate 8 is fixedly installed at the bottom of the barrier cloth 7. The partition plate 8 is fixedly installed inside the screening box 1. A guide member 9 is fixedly installed inside the screening box 1. The guide member 9 is fixedly installed on one side of the partition plate 8.

[0023] It should be noted that the sand to be screened is stored in the sand storage box 11. When the sand is screened, the second motor 14 is started to rotate the auger conveyor 13, and the sand in the sand storage box 11 is gradually transported to the inside of the second conveying pipe 12, and the internal arrangement of the sand storage box 11 will concentrate the sand to flow to the sand inlet of the second conveying pipe 12, and the sand is transported into the guide pipe 15 through the rotation of the auger conveyor 13 and flows out through the sand outlet 16. The first motor 3 is started to rotate the transmission wheel 4, so that the convex rod 5 causes the chute frame 6 to slide back and forth inside the chute frame 6, and then the triangular screen 2 is driven to move synchronously through the connecting rod 19. When the sand flows out of the sand outlet 16, the convex rod 5 The sand that meets the standards falls on the top of the triangular screen 2. At this time, the triangular screen 2 reciprocates left and right to screen the sand. The sand that meets the standards passes through the triangular screen 2 and falls out of the screening box 1. The sand remaining on the top of the triangular screen 2 flows on the top of the triangular screen 2. Since the triangular screen 2 is arranged in a triangular shape, the remaining sand will flow to both sides under the guidance of the slope of the triangular screen 2 and fall on the surface of the guide member 9. Under the guidance of the guide member 9, it will flow back into the sand storage box 11 through the first conveying pipe 10, so that the sand can be conveyed to the triangular screen 2 again through the auger conveying member 13, and then the sand can be screened for the second time, so as to avoid the phenomenon that the sand that meets the standards is discarded due to incomplete screening.

[0024] Further, such as Figure 4 As shown, one side of the screening box 1 is connected with a first conveying pipe 10, one end of the first conveying pipe 10 is connected with a sand storage box 11, a second conveying pipe 12 is fixedly installed inside the sand storage box 11, an auger conveying member 13 is rotatably connected inside the second conveying pipe 12, a second motor 14 is fixed at the bottom of the sand storage box 11, and the auger conveying member 13 is fixedly installed at the output end of the second motor 14, as shown in FIG. Figure 1 As shown, a flow guide pipe 15 is connected to one side of the second delivery pipe 12, and a sand discharge member 16 is slidably connected to the bottom of the flow guide pipe 15. Figure 5As shown, an extension plate 17 is fixedly mounted on one side of the sand discharge member 16 , an electric cylinder 18 is fixedly mounted on the bottom of the guide tube 15 , and the extension plate 17 is fixedly mounted on the output end of the electric cylinder 18 .

[0025] It should be noted that, when screening the sand, the electric cylinder 18 is started to drive the extension plate 17 to move back and forth, and the extension plate 17 drives the sand outlet piece 16 to slide when moving, so that when the sand outlet piece 16 discharges sand, the sand can be evenly sprinkled on the top of the triangular screen 2, thereby avoiding the outflowing sand being in the half area of ​​the triangular screen 2, and then there is a phenomenon that there is more sand in the half area of ​​the triangular screen 2, resulting in a large amount of qualified sand not being screened.

[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0027] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0028] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A foundry sand screening device, comprising a screening box (1), characterized in that: The inner side of the screening box (1) is slidably connected with a triangular screen (2); a first motor (3) is fixedly mounted on one side of the screening box (1); a transmission wheel (4) is fixedly mounted on the output end of the first motor (3); a convex rod (5) is fixedly mounted on one side of the transmission wheel (4); a chute frame (6) is slidably connected to the outer side of the convex rod (5); a connecting rod (19) is fixedly mounted on one side of the chute frame (6); the connecting rod (19) is slidably connected to the inside of the screening box (1); the connecting rod (19) is fixedly mounted on one side of the triangular screen (2); a barrier cloth (7) is fixedly mounted on the bottom of the triangular screen (2); a partition plate (8) is fixedly mounted on the bottom of the barrier cloth (7); and the partition plate (8) is fixedly mounted inside the screening box (1).

2. A foundry sand screening device according to claim 1, characterized in that: A flow guide (9) is fixedly installed inside the screening box (1), and the flow guide (9) is fixedly installed on one side of the partition plate (8).

3. A foundry sand screening device according to claim 2, characterized in that: One side of the screening box (1) is connected to a first delivery pipe (10), and one end of the first delivery pipe (10) is connected to a sand storage box (11).

4. A foundry sand screening device according to claim 3, characterized in that: A second conveying pipe (12) is fixedly installed inside the sand storage box (11), and an auger conveying member (13) is rotatably connected inside the second conveying pipe (12).

5. A foundry sand screening device according to claim 4, characterized in that: A second motor (14) is fixed to the bottom of the sand storage box (11), and the auger conveying member (13) is fixedly mounted on the output end of the second motor (14).

6. A foundry sand screening device according to claim 5, characterized in that: One side of the second delivery pipe (12) is connected to a flow guide pipe (15), and the bottom of the flow guide pipe (15) is slidably connected to a sand discharge member (16).

7. A foundry sand screening device according to claim 6, characterized in that: An extension plate (17) is fixedly mounted on one side of the sand discharge member (16), an electric cylinder (18) is fixedly mounted on the bottom of the flow guide tube (15), and the extension plate (17) is fixedly mounted on the output end of the electric cylinder (18).

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