Foundry sand mixing device

Abstract

The utility model discloses a foundry molding sand mixing device which comprises a mixing box and a stirring mechanism installed in the mixing box, a screening mechanism located above the stirring mechanism is installed in the mixing box, the screening mechanism comprises a driving part installed outside the mixing box, the driving part is fixedly connected with a first screening frame through a transmission part, and the first screening frame is fixedly connected with a second screening frame through a transmission part. A cleaning assembly fixed to the inner wall of the mixing box is arranged in the first screen frame, the transmission part comprises a spline shaft, one end of the spline shaft is fixedly connected with the output end of the driving part, the other end of the spline shaft is movably sleeved with a spline sleeve, and the end, away from the spline shaft, of the spline sleeve is fixedly connected with the first screen frame. The driving piece can drive the first screen frame to rotate and shake through the cooperation of the transmission piece and the feeding pipe, so that raw materials of casting molding sand can be rapidly screened, fine sand grains are screened to fall to the stirring mechanism to be stirred and mixed, the production efficiency is improved, and the quality of the casting molding sand is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of foundry sand mixing, in particular to a foundry sand mixing device. Background Art

[0002] Foundry sand is generally made by mixing raw sand for casting, sand binder, additives and other modeling materials in proportion.

[0003] Before the foundry sand is mixed, fine sand particles are needed as the molding sand. The existing mixing devices cannot intercept the large particles therein and mix them into the sand for stirring and mixing, which will affect the final quality of the foundry sand. Utility Model Content

[0004] The utility model aims at solving the problems in the prior art and proposes the following technical solutions:

[0005] A foundry sand mixing device comprises a mixing box and a stirring mechanism installed inside the mixing box, a screening mechanism located above the stirring mechanism is installed inside the mixing box, the screening mechanism comprises a driving member installed outside the mixing box, the driving member is fixedly connected to a first screen frame through a transmission member, and a cleaning component fixed to the inner wall of the mixing box is arranged inside the first screen frame.

[0006] As a preferred embodiment of the above technical solution, the transmission member includes:

[0007] A spline shaft, one end of which is fixedly connected to the output end of the driving member, and the other end of which is provided with a spline sleeve, wherein the end of the spline sleeve away from the spline shaft is fixedly connected to the first screen frame.

[0008] As a preferred embodiment of the above technical solution, the feed port fixed sleeve of the mixing box is provided with a feed pipe, the inner wall of the feed pipe is provided with a corrugated slide rail, the outer wall of the spline sleeve is fixedly connected with a guide slide rod, and the end of the guide slide rod away from the spline sleeve is slidably connected to the corrugated slide rail.

[0009] As a preferred embodiment of the above technical solution, the outer wall of the first screen frame is rotatably connected to a first connecting rod, one end of the first connecting rod away from the first screen frame is fixedly connected to a second screen frame, and the second screen frame is slidably connected to the inner wall of the mixing box.

[0010] As a preferred embodiment of the above technical solution, the cleaning component includes:

[0011] A second connecting rod, one end of which is fixed on the inner wall of the mixing box, and the other end of which is fixedly connected with a cleaning brush, wherein the cleaning brush contacts the inner wall of the first screen frame.

[0012] The beneficial effects of the utility model are:

[0013] 1. The driving member of the utility model can drive the first screen frame to rotate and shake through the cooperation of the transmission member and the feed pipe, so as to quickly screen the raw materials of the foundry sand, and screen the fine sand particles to the stirring mechanism for stirring and mixing, which not only improves the production efficiency but also ensures the quality of the foundry sand;

[0014] 2. The utility model can prevent particles from blocking the filter holes of the first screen frame through the cleaning component, thereby ensuring the patency of the first screen frame and improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 What is shown is a schematic diagram of the structure of a foundry sand mixing device in an embodiment;

[0016] Figure 2 Shown is a schematic structural diagram of a feed pipe in an embodiment.

[0017] Description of reference numerals:

[0018] 1. Mixing box; 2. Support rod; 3. Feed pipe; 31. Corrugated slide rail; 4. First motor seat; 5. First motor; 6. Stirring shaft; 7. Stirring blade; 8. Second motor seat; 9. Second motor; 10. Spline shaft; 11. Spline sleeve; 12. Guide slide rod; 13. First screen frame; 14. First connecting rod; 15. Second screen frame; 16. Second connecting rod; 17. Cleaning brush. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments.

[0020] Example

[0021] like Figure 1 and Figure 2 As shown, a foundry sand mixing device comprises a mixing box 1 and a stirring mechanism installed inside the mixing box 1, the outer wall of the mixing box 1 is fixedly connected with at least four support rods 2 for support, a screening mechanism located above the stirring mechanism is installed inside the mixing box 1, the screening mechanism comprises a driving member installed outside the mixing box 1, the driving member is fixedly connected with a first screen frame 13 through a transmission member, a cleaning component fixed to the inner wall of the mixing box 1 is arranged inside the first screen frame 13, and the driving member comprises a second motor 9, and the second motor 9 is fixed to the outer wall of the mixing box 1 through a second motor base 8.

[0022] Specifically, the driving member can drive the first screen frame 13 to rotate inside the mixing box 1 through the transmission member, and quickly screen the raw materials of the casting sand through centrifugal force. At the same time, the cleaning component can clean the particles stuck on the filter holes of the first screen frame 13 to avoid blocking the filter holes and affecting the screening efficiency.

[0023] like Figure 1 and Figure 2 As shown, the transmission member includes a spline shaft 10, one end of the spline shaft 10 is fixedly connected to the output end of the driving member, and the other end is movablely sleeved with a spline sleeve 11, and the end of the spline sleeve 11 away from the spline shaft 10 is fixedly connected to the first screen frame 13, the spline shaft 10 can drive the spline sleeve 11 to rotate, and the spline sleeve 11 can move up and down while following the rotation of the spline shaft 10.

[0024] like Figure 2 As shown, the feed port of the mixing box 1 is fixedly sleeved with a feed pipe 3, the inner wall of the feed pipe 3 is provided with a corrugated slide rail 31, the outer wall of the spline sleeve 11 is fixedly connected with a guide slide rod 12, and the end of the guide slide rod 12 away from the spline sleeve 11 is slidably connected to the corrugated slide rail 31.

[0025] Specifically, while the driving member drives the spline sleeve 11 to rotate through the spline shaft 10, the spline sleeve 11 will drive the first screen frame 13 to rotate and rise and fall through the sliding cooperation between the guide slide rod 12 and the corrugated slide rail 31, so that the raw material of the casting sand located inside the first screen frame 13 will not only accelerate the screening speed through centrifugal force, but also accelerate the screening speed through vibration.

[0026] like Figure 1 As shown, the outer wall of the first screen frame 13 is rotatably connected to the first connecting rod 14, and the first connecting rod 14 and the spline sleeve 11 are located at the center of the first screen frame 13. The end of the first connecting rod 14 away from the first screen frame 13 is fixedly connected to the second screen frame 15, and the second screen frame 15 is slidably connected to the inner wall of the mixing box 1, and the moving range of the second screen frame 15 is the fluctuation range of the corrugated slide rail 31.

[0027] Specifically, when the first screen frame 13 shakes and rotates up and down, the first connecting rod 14 will drive the second screen frame 15 to shake up and down together, thereby accelerating the screening efficiency.

[0028] like Figure 1 As shown, the cleaning assembly includes a second connecting rod 16, one end of which is fixed to the inner wall of the mixing box 1, and the other end is fixedly connected with a cleaning brush 17, which contacts the inner wall of the first screen frame 13. The cleaning brush 17 is "L" shaped. Since the bristles of the cleaning brush 17 are tough, the cleaning brush 17 can still clean the first screen frame 13 when it shakes up and down.

[0029] like Figure 1As shown, the stirring mechanism includes a first motor 5 and a stirring shaft 6. The first motor 5 is fixed to the outer wall of the mixing box 1 through the first motor base 4. One end of the stirring shaft 6 is rotatably connected to the inner wall of the mixing box 1, and the other end passes through one side of the mixing box 1 and is fixedly connected to the output end of the first motor 5. The stirring shaft 6 is fixedly connected with a plurality of stirring blades 7. The stirring shaft 6 and the stirring blades 7 are driven to rotate by the first motor 5 to stir and mix the raw materials of the screened casting sand, and finally the materials can be discharged through the discharge end at the bottom of the mixing box 1.

[0030] The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit it.

Claims

1. A foundry sand mixing device, comprising a mixing box (1) and a stirring mechanism installed inside the mixing box (1), characterized in that: A screening mechanism located above the stirring mechanism is installed inside the mixing box (1), and the screening mechanism comprises a driving member installed outside the mixing box (1), and the driving member is fixedly connected to a first screen frame (13) via a transmission member, and a cleaning component fixed to the inner wall of the mixing box (1) is arranged inside the first screen frame (13).

2. The foundry sand mixing device according to claim 1, characterized in that: The transmission member comprises: A spline shaft (10), one end of the spline shaft (10) is fixedly connected to the output end of the driving member, and the other end is movably sleeved with a spline sleeve (11), and the end of the spline sleeve (11) away from the spline shaft (10) is fixedly connected to the first screen frame (13).

3. The foundry sand mixing device according to claim 2, characterized in that: The feed port of the mixing box (1) is fixedly sleeved with a feed pipe (3), the inner wall of the feed pipe (3) is provided with a corrugated slide rail (31), the outer wall of the spline sleeve (11) is fixedly connected with a guide slide rod (12), and the end of the guide slide rod (12) away from the spline sleeve (11) is slidably connected to the corrugated slide rail (31).

4. The foundry sand mixing device according to claim 1, characterized in that: The outer wall of the first screen frame (13) is rotatably connected to a first connecting rod (14), one end of the first connecting rod (14) away from the first screen frame (13) is fixedly connected to a second screen frame (15), and the second screen frame (15) is slidably connected to the inner wall of the mixing box (1).

5. The foundry sand mixing device according to claim 1, characterized in that: The cleaning component comprises: A second connecting rod (16), one end of which is fixed to the inner wall of the mixing box (1), and the other end of which is fixedly connected to a cleaning brush (17), wherein the cleaning brush (17) contacts the inner wall of the first screen frame (13).

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