A casting mechanical sand mixing device for electric furnace manufacturing

Abstract

The present invention belongs to the field of casting technology, and in particular to a casting mechanical sand mixing device for electric furnace manufacturing. In view of the problem that the material full of water is prone to agglomeration when mixing sand, the following scheme is proposed, including a sand mixing cylinder, the top of which is fixed with a cover plate by bolts, and the upper surface of the cover plate is evenly welded with support columns near the center, the tops of several support columns are fixed with the same support plate by bolts, and the top of the support plate is fixed with a driving source near the center, the output shaft of the driving source passes through the support plate, and the output shaft of the driving source is connected to a rotating shaft through a coupling. The present invention sets a sand filter net to force the agglomerated sand mixing material to pass through the sand filter net, so that it is decomposed into smaller particles, which helps to improve the efficiency of sand mixing, ensure uniform sand mixing, and effectively reduce defects such as pores and sand holes in castings. Efficient and uniform sand mixing can help the surface of castings to be smoother, thereby reducing the need for subsequent processing.

Description

Technical Field

[0001] The invention relates to the technical field of casting, in particular to a casting mechanical sand mixing device for electric furnace manufacturing. Background Art

[0002] In the early days, sand mixing was mainly done manually. The mixing process of sand was cumbersome and inefficient. Using simple tools and equipment, such as manual mixers, the sand mixing process was not uniform enough. In modern times, mechanical sand mixing devices gradually introduced electric drive and automatic control technology, which improved the uniformity and efficiency of sand mixing. The equipment began to have more complex mixing structures and ratio control functions. At this stage, advanced sensors and control systems can provide higher-precision sand mixing control, improving the quality and consistency of castings.

[0003] When the existing foundry mechanical sand mixing device mixes the materials full of water, some materials are easy to gather into agglomerates due to the water, which seriously affects the uniformity and efficiency of the sand mixing. The uneven sand mixing is easy to increase the defects such as pores and sand holes in the casting, which reduces the overall quality and strength of the casting. The inefficient and uneven sand mixing will cause the surface of the casting to be rough, thereby increasing the need for subsequent processing and increasing the production cost. Therefore, a foundry mechanical sand mixing device for electric furnace manufacturing is proposed. Summary of the invention

[0004] In order to solve the problem that the material full of water is easy to agglomerate into sand when mixing the sand, the present invention provides a casting mechanical sand mixing device for electric furnace manufacturing.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a casting mechanical sand mixing device for electric furnace manufacturing, comprising a sand mixing cylinder, a cover plate is fixed to the top of the sand mixing cylinder by bolts, and a support column is evenly welded on the upper surface of the cover plate near the center, a plurality of support columns are fixed to the same support plate by bolts at the top, and a driving source is fixed to the top of the support plate near the center, the output shaft of the driving source passes through the support plate, and the output shaft of the driving source is connected to a rotating shaft through a coupling, the rotating shaft passes through the cover plate, and a sand conveying mechanism is installed near the bottom of the circumferential outer wall of the rotating shaft, the sand conveying mechanism comprises a loading pipe, and an upper suspension plate is sleeved and fixed on the circumferential outer wall of the loading pipe near the top, a sand dividing mechanism is installed on the top of the upper suspension plate, and the sand dividing mechanism comprises a sand dividing plate, a sand filtering mechanism is installed on the bottom of the upper suspension plate, and the sand filtering mechanism comprises a sand filtering plate, and the upper surface of the sand filtering plate is evenly opened with fan-shaped filter holes at a position deviating from the center of the circle, and a sand filtering net is fixed to the inner wall of the fan-shaped filter hole.

[0006] A further configuration of the present invention is that the sand conveying mechanism comprises a vortex track, the circumferential outer wall of the rotating shaft is sleeved and fixed with the vortex track near the bottom end, and the circumferential outer wall of the vortex track is sleeved and fixed with a loading tube.

[0007] A further configuration of the present invention is that a loading block is sleeved and fixed on the circumferential outer wall of the rotating shaft near the top, and the circumferential outer wall of the loading block is provided with mounting holes, and the mounting holes are plugged with connecting rods, and a rectangular feeding port is provided on the upper surface of the cover plate near the circumferential edge.

[0008] A further configuration of the present invention is that an internal gear is sleeved and fixed on the circumferential outer wall of the rotating shaft near the bottom end of the loading block, a carrying ring is clamped on the circumferential outer wall of the sand mixing cylinder near the top end, and connecting arms are evenly welded on the circumferential inner wall of the carrying ring, and the same carrying plate is welded on the end of several connecting arms away from the carrying ring, and fixed columns are evenly welded on the top of the carrying plate deviating from the center of the circle, and the circumferential outer walls of several fixed columns are rotatably connected with fixed gears, and the fixed gears and the internal gears are meshed.

[0009] A further configuration of the present invention is that a sand dividing box is rotatably connected to the circumferential outer wall of the sand mixing cylinder near the top of the carrying ring, and the sand dividing box is adapted to the rectangular feeding port, rectangular holes for sand dividing are evenly opened on the inner wall of the bottom end of the sand dividing box, an outer gear ring is clamped and fixed to the circumferential inner wall of the sand dividing box, and the outer gear ring is meshed with a fixed gear, and a sealing disk is sleeved and fixed to the circumferential outer wall of the loading block near the bottom end.

[0010] A further configuration of the present invention is that a scraper is inserted into the circumferential outer wall of a plurality of the connecting rods near the bottom end, and the scraper is adapted to the rectangular hole for separating the sand.

[0011] A further configuration of the present invention is that the sand dividing mechanism includes a pad block, the top of the upper suspension plate is fixed with a pad block by bolts, and the upper surface of the pad block is provided with a sand dividing plate through a bolt track, and the upper surface of the sand dividing plate is evenly provided with sand leakage holes near the circumferential edge.

[0012] The present invention is further configured in that the sand filter mechanism includes an upper limit ring, an upper limit ring is clamped and fixed near the middle of the circumferential inner wall of the sand mixing cylinder, and a lower limit ring is clamped and fixed near the bottom end of the upper limit ring on the circumferential inner wall of the sand mixing cylinder, the upper surface of the upper limit ring is evenly provided with connecting holes, and the inner walls of the connecting holes are all inserted with limiting sliding rods, the bottom end of the limiting sliding rod is connected to the lower limit ring, and the circumferential outer wall of the limiting sliding rod is slidably sleeved with the same sand filter disc, the circumferential outer wall of the loading tube is rotatably connected with a lower suspension disc near the bottom end of the sand filter disc, and a supporting spring is welded and fixed on the upper surface of the lower suspension disc, and the top of the supporting spring is connected to the sand filter disc, the bottom end of the upper suspension disc is evenly welded with oblique blocks near the circumferential edge, the upper surface of the sand filter disc is evenly provided with arc holes near the center of the circle, and the arc holes and the oblique blocks are adapted to each other.

[0013] A further configuration of the present invention is that a sand blocking ring is welded and fixed near the center of the upper surface of the sand filter disc, and wheel holes are evenly opened on the circumferential outer wall of the sand blocking ring near the top, several of the wheel holes are plugged with wheel axles, and the circumferential outer walls of several wheel axles are rotatably connected with rollers near both ends, the circumferential outer wall of the upper suspension disc is opened with rod holes, and brush rods are plugged into several of the rod holes, and the circumferential outer wall of the brush rod is evenly plugged with bristles.

[0014] A further configuration of the present invention is that an inner sand mixing tube is sleeved and fixed on the circumferential outer wall of the loading tube near the bottom end, and an inner sand mixing plate is evenly clamped on the circumferential outer wall of the inner sand mixing tube, an outer sand mixing tube is clamped and fixed on the circumferential outer wall of the sand mixing cylinder near the bottom end, and an outer sand mixing plate is evenly clamped on the circumferential inner wall of the outer sand mixing tube, and a plurality of the outer sand mixing plates and the inner sand mixing plates are staggeredly distributed.

[0015] In summary, the beneficial effects of this solution are:

[0016] 1. By setting up a sand filter, the clumped sand mixed material is forced to pass through the sand filter. The sand filter can break down these lumps into smaller particles, which helps to improve the efficiency of sand mixing and ensure uniform sand mixing. It can effectively reduce defects such as pores and sand holes in castings, and improve the overall quality and strength of castings. Efficient and uniform sand mixing can help the surface of castings be smoother, thereby reducing the need for subsequent processing.

[0017] 2. By setting a support spring, the sand filter disc can be shaken up and down. The shaking can help break up the clumps in the mixed sand material, making it easier for it to pass through the mesh, thereby improving the screening efficiency. The moisture or other impurities in the mixed sand material may cause the sand filter mesh to be blocked. The shaking can help loosen these blockages, reduce the blockage of the sand filter net, and keep the sand filter net unobstructed.

[0018] 3. By setting the outer sand mixing plate and the inner sand mixing plate, the sliding distance of the sand mixing material can be extended, and during the sliding process, the sand mixing steps can be carried out more thoroughly, thereby improving the completion degree of the sand mixing and the sand mixing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure of a casting mechanical sand mixing device for electric furnace manufacturing proposed by the present invention;

[0020] Figure 2 This is a schematic diagram of the internal structure of a casting mechanical sand mixing device for electric furnace manufacturing proposed by the present invention;

[0021] Figure 3 This is a schematic cross-sectional structure diagram of a casting mechanical sand mixing device for electric furnace manufacturing proposed by the present invention;

[0022] Figure 4This is a schematic diagram of the structure of a sand separation box of a casting mechanical sand mixing device for electric furnace manufacturing proposed by the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a sand dividing plate of a casting mechanical sand mixing device for electric furnace manufacturing proposed by the present invention;

[0024] Figure 6 A casting mechanical sand mixing device for electric furnace manufacturing proposed by the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0025] Figure 7 This is a schematic structural diagram of an external sand mixing plate of a casting mechanical sand mixing device for electric furnace manufacturing proposed by the present invention.

[0026] In the figure: 1, sand mixing cylinder; 2, support column; 3, support plate; 4, driving source; 5, rotating shaft; 6, cover plate; 601, rectangular feeding port; 7, external sand mixing pipe; 8, sand filter plate; 801, fan-shaped filter hole; 802, arc hole; 9, connecting hole; 10, sand dividing box; 1001, sand dividing rectangular hole; 11, sand dividing plate; 1101, sand leakage hole; 12, bearing ring; 13, upper limit ring; 14, limit slide bar; 15, lower limit ring; 16, connecting arm; 17, scraper Plate; 18, connecting rod; 19, fixed gear; 20, loading tube; 21, vortex rail; 22, inner sand mixing tube; 23, sealing plate; 24, loading block; 25, inner gear; 26, outer gear ring; 27, bearing plate; 28, fixed column; 29, sand blocking ring; 30, cushion block; 31, upper suspension plate; 32, support spring; 33, lower suspension plate; 34, roller; 35, oblique block; 36, bristles; 37, brush rod; 38, outer sand mixing plate; 39, inner sand mixing plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In this embodiment, refer to Figure 1-7A casting mechanical sand mixing device for electric furnace manufacturing includes a sand mixing cylinder 1, a cover plate 6 is fixed to the top of the sand mixing cylinder 1 by bolts, and a support column 2 is evenly welded on the upper surface of the cover plate 6 near the center, a plurality of support columns 2 are fixed to the same support plate 3 by bolts, and a driving source 4 is fixed to the top of the support plate 3 near the center, the output shaft of the driving source 4 passes through the support plate 3, and the output shaft of the driving source 4 is connected to a rotating shaft 5 through a coupling, the rotating shaft 5 passes through the cover plate 6, and a sand conveying mechanism is installed near the bottom of the circumferential outer wall of the rotating shaft 5, the sand conveying mechanism includes a loading pipe 20, and an upper suspension plate 31 is sleeved and fixed to the circumferential outer wall of the loading pipe 20 near the top, and the upper suspension plate A sand separation mechanism is installed at the top of 31, and the sand separation mechanism includes a sand separation plate 11. A sand filtering mechanism is installed at the bottom of the upper suspension plate 31, and the sand filtering mechanism includes a sand filtering plate 8. The upper surface of the sand filtering plate 8 is evenly opened with fan-shaped filter holes 801 deviating from the center of the circle, and the inner wall of the fan-shaped filter hole 801 is fixed with a sand filtering net; by setting the sand filtering net, the agglomerated sand mixed material is forced to pass through the sand filtering net, and the sand filtering net can decompose these agglomerates into smaller particles, which helps to improve the efficiency of sand mixing and ensure uniform sand mixing, which can effectively reduce defects such as pores and sand holes in the casting, improve the overall quality and strength of the casting, and efficient and uniform sand mixing can help the surface of the casting to be smoother, thereby reducing the need for subsequent processing.

[0029] refer to Figure 3 The sand conveying mechanism includes a vortex track 21, and the vortex track 21 is sleeved and fixed on the circumferential outer wall of the rotating shaft 5 near the bottom end, and the loading tube 20 is sleeved and fixed on the circumferential outer wall of the vortex track 21; by setting the vortex track 21, the mixed sand material at the bottom can be transported to the top again, the number of sand mixing times can be selected according to needs, and during the rotation process, the materials can be mixed more evenly, thereby further improving the sand mixing efficiency.

[0030] refer to Figure 1 , Figure 3 A loading block 24 is sleeved and fixed on the circumferential outer wall of the rotating shaft 5 near the top, and the circumferential outer wall of the loading block 24 is provided with mounting holes, and the mounting holes are plugged with connecting rods 18. A rectangular feeding port 601 is provided on the upper surface of the cover plate 6 near the circumferential edge. By setting the connecting rod 18, when material is added to the rectangular feeding port 601, the connecting rod 18 rotates and strikes the material, so that the material is initially dispersed, the material is avoided from being accumulated, and the probability of the material agglomerating is reduced.

[0031] refer to Figure 2 , Figure 4The outer circumferential wall of the rotating shaft 5 is sleeved and fixed with an internal gear 25 near the bottom end of the loading block 24, the outer circumferential wall of the sand mixing cylinder 1 is clamped with a load ring 12 near the top, and the inner circumferential wall of the load ring 12 is uniformly welded with connecting arms 16, and the ends of the connecting arms 16 away from the load ring 12 are welded with the same load plate 27, and the top of the load plate 27 is uniformly welded with fixed columns 28 at the deviated center of the circle, and the outer circumferential walls of the fixed columns 28 are all rotatably connected with fixed gears 19, and the fixed gears 19 are meshed with the internal gear 25, and the outer circumferential wall of the sand mixing cylinder 1 is close to the load ring 12. A sand dividing box 10 is rotatably connected to the top of the bearing ring 12, and the sand dividing box 10 is adapted to the rectangular feeding port 601. Rectangular holes 1001 for sand separation are evenly opened on the inner wall of the bottom end of the sand dividing box 10. An outer toothed ring 26 is clamped and fixed to the circumferential inner wall of the sand dividing box 10, and the outer toothed ring 26 is meshed with the fixed gear 19. A sealing disk 23 is sleeved and fixed to the circumferential outer wall of the loading block 24 near the bottom end. By setting up a rotating sand dividing box 10, the mixed sand material can be dropped more evenly, the material can be dispersed over a large range, the efficiency of sand mixing can be improved, and the risk of accumulation and blockage can be reduced.

[0032] refer to Figure 4 A scraper 17 is inserted into the circumferential outer wall of the connecting rods 18 near the bottom end, and the scraper 17 is adapted to the sand dividing rectangular hole 1001; by setting the scraper 17, the material can be scraped and dropped along the sand dividing rectangular hole 1001, thereby avoiding material accumulation and improving the efficiency of sand mixing.

[0033] refer to Figure 5 The sand separation mechanism includes a cushion block 30, the top of the upper suspension plate 31 is fixed with the cushion block 30 by bolts, and the upper surface of the cushion block 30 is provided with a sand separation plate 11 through a bolt track, and the upper surface of the sand separation plate 11 is evenly provided with sand leakage holes 1101 near the circumferential edge; by setting the sand separation plate 11, the mixed sand material can slide evenly along the inclined surface of the sand separation plate 11, and then be evenly scattered through the sand leakage holes 1101.

[0034] refer to Figure 5 , Figure 6The sand filtering mechanism includes an upper limit ring 13, the upper limit ring 13 is fixedly connected to the inner wall of the circumference of the sand mixing cylinder 1 near the middle, and the lower limit ring 15 is fixedly connected to the inner wall of the circumference of the sand mixing cylinder 1 near the bottom end of the upper limit ring 13, the upper surface of the upper limit ring 13 is evenly opened with connecting holes 9, and the inner walls of the connecting holes 9 are all inserted with limit slide bars 14, the bottom ends of the limit slide bars 14 are connected to the lower limit ring 15, and the circumferential outer wall of the limit slide bar 14 is slidably sleeved with the same sand filter plate 8, the circumferential outer wall of the loading tube 20 is rotatably connected with a lower suspension plate 33 near the bottom end of the sand filter plate 8, and the upper surface of the lower suspension plate 33 is welded and fixed with a support spring 3 2, and the top of the support spring 32 is connected to the sand filter disc 8, the bottom of the upper suspension disc 31 is evenly welded with an oblique block 35 near the circumferential edge, and the upper surface of the sand filter disc 8 is evenly opened with arc holes 802 near the center of the circle, and the arc holes 802 are adapted to the oblique blocks 35; by setting the support spring 32, the sand filter disc 8 can be shaken up and down, and the shaking can help break up the clumps in the mixed sand material, making it easier to pass through the mesh, thereby improving the screening efficiency, and the moisture or other impurities in the mixed sand material may cause the sand filter mesh to be blocked, and the shaking can help loosen these blockages, reduce the blockage of the sand filter net, and keep the sand filter net unobstructed.

[0035] refer to Figure 6 A sand blocking ring 29 is welded and fixed near the center of the upper surface of the sand filter disc 8, and wheel holes are evenly opened on the circumferential outer wall of the sand blocking ring 29 near the top, and wheel axles are inserted into several wheel holes, and rollers 34 are rotatably connected to the circumferential outer walls of several wheel axles near both ends, and rod holes are opened on the circumferential outer wall of the upper suspension disc 31, and brush rods 37 are inserted into several rod holes, and bristles 36 are evenly inserted on the circumferential outer wall of the brush rod 37; by arranging the bristles 36, the sand filter net can be further cleaned, the sand filter net can be avoided from being blocked, and the stable operation of the sand mixing can be ensured.

[0036] refer to Figure 7 The inner sand mixing tube 22 is sleeved and fixed on the circumferential outer wall of the loading tube 20 near the bottom end, and the inner sand mixing plate 39 is evenly clamped on the circumferential outer wall of the inner sand mixing tube 22. The outer sand mixing tube 7 is clamped and fixed on the circumferential outer wall of the sand mixing cylinder 1 near the bottom end, and the outer sand mixing plate 38 is evenly clamped on the circumferential inner wall of the outer sand mixing tube 7. A plurality of outer sand mixing plates 38 and inner sand mixing plates 39 are staggered. By arranging the outer sand mixing plates 38 and the inner sand mixing plates 39, the sliding distance of the mixed sand material can be extended, and in the sliding process, the sand mixing step can be carried out more thoroughly, thereby improving the completion degree of the sand mixing and the sand mixing effect.

[0037] When the present invention is in use: the driving source 4 is started, the sand-mixing material is added from the rectangular feeding port 601, the connecting rod 18 rotates to break up the sand-mixing material, the rotating shaft 5 indirectly drives the sand-dividing box 10 to rotate, collects the sand-mixing material, and makes the sand-mixing material evenly distributed in the sand-dividing box 10, and at the same time the scraper 17 rotates to scrape the sand-mixing material so that it falls evenly along the sand-dividing rectangular hole 1001, when the sand-mixing material falls to the upper surface of the sand-dividing plate 11, the sand-dividing plate 11 rotates to further disperse the sand-mixing material so that it falls evenly along the sand-leaking hole 1101, and when the sand-mixing material falls to the upper surface of the sand-filtering plate 8, the sand-filtering net first filters the dispersed state of the sand-mixing material. The sand-mixing material moves along the arc hole 802 at the same time, compressing the support spring 32. When the oblique block 35 overlaps with the arc hole 802 again, the support spring 32 stretches and resets, causing the sand filter to impact upward, breaking up the lumps in the sand-mixing material, making it easier to pass through the mesh, thereby improving the screening efficiency. Finally, the sand-mixing material slides down along the inner sand-mixing plate 39 and the outer sand-mixing plate 38 alternately. During the sliding process, it is fully mixed to ensure the mixing uniformity. When the sand-mixing material slides to the lowest end of the sand-mixing cylinder 1, the vortex rail 21 transports the sand-mixing material to the top again, and the sand-mixing operation is performed again to improve the mixing uniformity.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical sand mixing device for electric furnace manufacturing, comprising a sand mixing drum (1), characterized in that: The top of the sand mixing cylinder (1) is fixed with a cover plate (6) by bolts, and the upper surface of the cover plate (6) is uniformly welded with support columns (2) near the center, the tops of a plurality of the support columns (2) are fixed with the same support plate (3) by bolts, and the top of the support plate (3) is fixed with a driving source (4) near the center, the output shaft of the driving source (4) passes through the support plate (3), and the output shaft of the driving source (4) is connected to a rotating shaft (5) via a coupling, the rotating shaft (5) passes through the cover plate (6), and the circumferential outer wall of the rotating shaft (5) is near the bottom. A sand conveying mechanism is installed at the end, the sand conveying mechanism comprises a loading pipe (20), and an upper suspension plate (31) is sleeved and fixed on the circumferential outer wall of the loading pipe (20) near the top end, a sand separation mechanism is installed at the top end of the upper suspension plate (31), and the sand separation mechanism comprises a sand separation plate (11), a sand filtering mechanism is installed at the bottom end of the upper suspension plate (31), and the sand filtering mechanism comprises a sand filtering plate (8), and the upper surface of the sand filtering plate (8) is evenly provided with fan-shaped filtering holes (801) at a position deviated from the center of the circle, and a sand filtering net is fixed on the inner wall of the fan-shaped filtering hole (801); The sand filtering mechanism comprises an upper limit ring (13), the upper limit ring (13) is fixedly connected to the inner wall of the circumference of the sand mixing cylinder (1) near the middle, and a lower limit ring (15) is fixedly connected to the inner wall of the circumference of the sand mixing cylinder (1) near the bottom end of the upper limit ring (13), the upper surface of the upper limit ring (13) is evenly provided with connecting holes (9), and the inner walls of the connecting holes (9) are all plugged with limit slide bars (14), the bottom ends of the limit slide bars (14) are connected to the lower limit ring (15), and the circumferential outer wall of the limit slide bars (14) is slidably sleeved with the same sand filtering disc (8), the circumferential outer wall of the loading tube (20) is rotatably connected to the lower suspension disc (33) near the bottom end of the sand filtering disc (8), and the upper surface of the lower suspension disc (33) is welded and fixed with a support spring (33). 2), and the top of the support spring (32) is connected to the sand filter disc (8), the bottom end of the upper suspension disc (31) is uniformly welded with an oblique block (35) near the circumferential edge, the upper surface of the sand filter disc (8) is uniformly opened with arc holes (802) near the center of the circle, and the arc holes (802) and the oblique blocks (35) are adapted to each other, the inner sand mixing tube (22) is sleeved and fixed on the circumferential outer wall of the loading tube (20) near the bottom end, and the inner sand mixing plate (39) is uniformly clamped on the circumferential outer wall of the inner sand mixing tube (22), the outer sand mixing tube (7) is clamped and fixed on the circumferential outer wall of the sand mixing cylinder (1) near the bottom end, and the outer sand mixing plate (38) is uniformly clamped on the circumferential inner wall of the outer sand mixing tube (7), and a plurality of the outer sand mixing plates (38) and the inner sand mixing plates (39) are staggeredly distributed.

2. A casting mechanical sand mixing device for electric furnace manufacturing according to claim 1, characterized in that: The sand transport mechanism comprises a vortex track (21), the vortex track (21) is sleeved and fixed on the circumferential outer wall of the rotating shaft (5) near the bottom end, and the loading tube (20) is sleeved and fixed on the circumferential outer wall of the vortex track (21).

3. A casting mechanical sand mixing device for electric furnace manufacturing according to claim 2, characterized in that: A loading block (24) is sleeved and fixed on the circumferential outer wall of the rotating shaft (5) near the top end, and mounting holes are provided on the circumferential outer wall of the loading block (24), and connecting rods (18) are inserted into the mounting holes. A rectangular feeding port (601) is provided on the upper surface of the cover plate (6) near the circumferential edge.

4. A casting mechanical sand mixing device for electric furnace manufacturing according to claim 3, characterized in that: An internal gear (25) is sleeved and fixed on the circumferential outer wall of the rotating shaft (5) near the bottom end of the loading block (24); a load ring (12) is clamped on the circumferential outer wall of the sand mixing cylinder (1) near the top end, and connecting arms (16) are uniformly welded on the circumferential inner wall of the load ring (12); a plurality of connecting arms (16) are welded to the same load plate (27) at one end away from the load ring (12), and fixed columns (28) are uniformly welded on the top end of the load plate (27) away from the center of the circle; and fixed gears (19) are rotatably connected to the circumferential outer walls of the plurality of fixed columns (28), and the fixed gears (19) and the internal gear (25) are meshed.

5. A casting mechanical sand mixing device for electric furnace manufacturing according to claim 4, characterized in that: A sand dividing box (10) is rotatably connected to the circumferential outer wall of the sand mixing cylinder (1) near the top of the bearing ring (12), and the sand dividing box (10) is adapted to the rectangular feeding port (601). The bottom inner wall of the sand dividing box (10) is evenly provided with sand dividing rectangular holes (1001). An outer toothed ring (26) is clamped and fixed to the circumferential inner wall of the sand dividing box (10), and the outer toothed ring (26) is meshed with a fixed gear (19). A sealing disk (23) is sleeved and fixed to the circumferential outer wall of the loading block (24) near the bottom.

6. A casting mechanical sand mixing device for electric furnace manufacturing according to claim 5, characterized in that: A scraper (17) is inserted into the circumferential outer wall of each of the connecting rods (18) near the bottom end, and the scraper (17) is adapted to the sand separation rectangular hole (1001).

7. A casting mechanical sand mixing device for electric furnace manufacturing according to claim 1, characterized in that: The sand separation mechanism comprises a cushion block (30), the cushion block (30) is fixed to the top of the upper suspension plate (31) by means of bolts, and a sand separation plate (11) is provided on the upper surface of the cushion block (30) via a bolt track, and sand leakage holes (1101) are evenly formed on the upper surface of the sand separation plate (11) near the circumferential edge.

8. A casting mechanical sand mixing device for electric furnace manufacturing according to claim 1, characterized in that: A sand blocking ring (29) is welded and fixed near the center of the upper surface of the sand filter disc (8), and wheel holes are uniformly opened on the circumferential outer wall of the sand blocking ring (29) near the top, and a plurality of the wheel holes are plugged with wheel axles, and a plurality of the circumferential outer walls of the wheel axles are rotatably connected with rollers (34) near both ends, and rod holes are opened on the circumferential outer wall of the upper suspension disc (31), and a brush rod (37) is plugged into the plurality of rod holes, and bristles (36) are uniformly inserted into the circumferential outer wall of the brush rod (37).

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