Pig iron casting reclaimed sand mixing equipment

Abstract

The invention discloses sand mixing equipment for pig iron casting reclaimed sand, and relates to the technical field of sand mixing equipment for pig iron casting reclaimed sand. Comprising a middle block, the middle block is fixedly connected with the outer side of a rotating shaft, the outer side of the rotating shaft is fixedly connected with two connecting pieces, the two connecting pieces are symmetrically arranged with the middle block as the center, the outer sides of the connecting pieces are slidably connected with round rods, the outer sides of the round rods are rotatably connected with fixing plates, and the fixing plates are arranged in a fan shape; a plurality of round holes are formed in the outer sides of the fixing plates, and the fixing plates are evenly distributed with the connecting piece as the center. According to the pig iron casting reclaimed sand mixing equipment, the fixing plates are designed to be fan-shaped, so that the fixing plates can cover a larger area during rotation, the stirring efficiency is improved, mixed reclaimed sand and a binder can be dispersed more uniformly, sand mixing dead angles are reduced, and the sand mixing quality is improved; and meanwhile, the round holes can enable the materials to form a more complex flowing path in the stirring process.

Description

Technical Field

[0001] The invention relates to the technical field of regenerated sand mixing equipment for pig iron casting, in particular to regenerated sand mixing equipment for pig iron casting. Background Art

[0002] With the advancement of Industry 4.0 and intelligent manufacturing, the traditional foundry industry is facing the pressure of transformation and upgrading. Foundry companies need to improve production efficiency, product quality and controllability of the production process, and reduce labor costs and labor intensity. The intelligent casting island can realize the automation, intelligence and information management of the casting process by integrating advanced automation equipment, control systems and information technology, and meet the modern industry's requirements for efficient, precise and stable casting production. In pig iron casting, sand mixing is a key link, and its quality directly affects the quality and performance of castings.

[0003] The traditional processing method of sand mixing is generally to directly mix a certain proportion of old sand with fresh raw sand to make them mixed evenly. However, after a large amount of old sand and new sand are directly mixed together, it is difficult to quickly mix them evenly with only a single mixing part, and a long mixing process is required. Therefore, the processing efficiency of the equipment is low, and the mixing parts have a large workload and are easily worn, resulting in a reduced service life of the equipment parts. Summary of the invention

[0004] To achieve the above purpose, the present invention is implemented through the following technical solutions: a pig iron casting regenerated sand mixing equipment, including a support plate, and a pillar fixedly installed at the bottom of the support plate, the support plate is fixedly connected to a shell inside, the outer side of the shell is fixedly connected to a discharge pipe, the bottom of the shell is fixedly connected to a motor, the inner wall of the shell is fixedly connected to a limit plate, the number of the limit plates is multiple, the limit plates are symmetrically arranged with the extension rod as the center, the shell is rotatably connected to a rotating shaft inside, a slide groove is provided on the outer side of the rotating shaft, and the rotating shaft is fixedly connected to the output end of the motor;

[0005] A feed assembly, which is fixedly mounted on the top of the shell;

[0006] A stirring assembly, the stirring assembly is fixedly connected to the outer side of the rotating shaft;

[0007] A buffer assembly, the buffer assembly is fixedly mounted on the top of the rotating shaft;

[0008] Among them, the stirring component includes a middle block, the middle block is fixedly connected to the outer side of the rotating shaft, the outer side of the rotating shaft is fixedly connected with a connecting piece, there are two connecting pieces, and the two connecting pieces are symmetrically arranged with the middle block as the center, the outer side of the connecting piece is slidably connected with a round rod, and the outer side of the round rod is rotatably connected with a fixed plate, and the material is added to the interior of the shell through the feeding component, and the motor is connected to an external power supply to work, the motor drives the rotating shaft to rotate, and the rotating shaft drives the fixed plate to rotate, so as to stir the material inside the shell. Since the fixed plate is fan-shaped, the fixed plate can cover a larger area when rotating, thereby improving the stirring efficiency, so that the mixed regenerated sand and binder can be more evenly dispersed, reducing dead corners of sand mixing, and improving the quality of sand mixing. At the same time, by arranging circular holes on the fixed plate, the circular holes can enable the material to form a more complex flow path during the stirring process. When the fan blades rotate, part of the material will flow from one side to the other side through the circular holes, increasing the lateral flow of the material, avoiding excessive accumulation of the material in local areas, and making the material more evenly distributed in the sand mixing equipment, thereby improving the overall mixing effect. The fixed plate is fan-shaped, and a circular hole is opened on the outside of the fixed plate. The diameter of the circular hole gradually increases from the rotating shaft to the edge of the fixed plate. The smaller circular hole can allow the material to have a certain resistance to passing through, avoiding the material from flowing out of the central area too quickly, and ensuring that the material has enough residence time in the central area for mixing. As the distance from the rotating shaft increases, the linear velocity of the material gradually increases. The larger circular hole can allow the material to pass through the fan blades more smoothly, reducing the accumulation of the material on the surface of the fixed plate, so that the material can quickly flow from the inside to the outside of the mixing area, promoting the uniform distribution of the material in the entire sand mixing equipment. There are multiple fixed plates, and the multiple fixed plates are evenly distributed with the connecting piece as the center.

[0009] Preferably, one end of the round rod away from the connecting piece is fixedly connected with a spiral plate, the spiral plate is elastic, two ends of the spiral plate are fixedly connected to the two round rods on both sides of the middle block, the spiral plate is connected to two adjacent round rods, the outer side of the middle block is fixedly connected with a fixed rod, the rotating shaft drives the fixed plate, the round rod and the square plate to rotate, thereby stirring the materials at different positions above, in the middle and below the shell, and can form a complex material flow pattern inside the shell, so that the materials at different heights and positions can be fully stirred and mixed, effectively reducing the dead corners of sand mixing, and improving the uniformity and consistency of sand mixing. There are multiple fixed rods, and the multiple fixed rods are evenly distributed with the middle block as the center, the end of the fixed rod away from the middle block is fixedly connected to the middle of the spiral plate, the outer side of the fixed rod is fixedly connected with the square plate, and the end of the middle block close to the connecting piece is fixedly connected with a spring, the spring is sleeved on the outer side of the rotating shaft, the end of the spring away from the middle block is fixedly connected to the connecting piece, and the spring is symmetrically arranged with the middle block as the center.

[0010] Preferably, the connecting piece includes a fixing ring, the inner wall of the fixing ring is fixedly connected with a sliding block, there are multiple sliding blocks, and the multiple sliding blocks are evenly distributed with the fixing ring as the center, the sliding block is located inside the slide groove, the fixing ring is slidably connected with the rotating shaft through the sliding block, and the material is added to the inside of the shell, the motor is connected to an external power supply to work, the motor drives the rotating shaft to rotate, and the rotating shaft drives the fixing ring and the extension rod to rotate, so that the extension rod slides inside the two limit plates, because the limit plates are inclined, as the rotating shaft rotates, extrusion is generated between the extension rod and the limit plates, the spring is compressed, and the fixing ring slides downward inside the slide groove outside the rotating shaft through the sliding block, and the fixing rings on both sides of the middle block move toward the direction of the middle block, and under the support of the spiral plate, the spiral plate pushes the round rod to slide inside the ring groove, so that one side of the fixing plate is aligned with the positioning The block contacts, so that the fixed plate is in an inclined state. As the extension rod moves away from the limit plate, the elastic properties of the spiral plate and the spring are used to reset the fixed ring and the round rod. Under the action of the material flow, the fixed plate is reset to a vertical state. The inclination change of the fixed plate can make the material form a more complex and reasonable flow path during the mixing process, increase the mutual interlacing and mixing of the materials, and reduce the local accumulation or uneven mixing of the materials. An annular groove is provided on the outer side of the fixed ring, and the end of the round rod away from the spiral plate is located inside the annular groove. The round rod is slidably connected to the annular groove, and a baffle is fixedly connected to the outer side of the fixed ring. The outer side of the fixed ring is fixedly connected to an extension rod, and there are multiple extension rods and multiple baffles. The baffles and the extension rods are alternately arranged, and a positioning block is fixedly connected to the outer side of the fixed ring close to one end of the middle block.

[0011] Preferably, the feeding assembly includes an outer shell, which is fixedly mounted on the top of the shell body, and a through hole is opened on the outer side of the outer shell, and the number of through holes is multiple, and the multiple through holes are evenly distributed on the outer shell, and a guide plate is fixedly connected to the outer side of the outer shell, and a lower hopper is fixedly connected to the top of the outer shell, and a protective cylinder is fixedly connected to the top of the lower hopper, and old sand is added to the interior of the protective cylinder, so that the old sand flows downward along the lower hopper, and thus the old sand falls into the interior of the filter cylinder, and the motor is connected to an external power supply to work, and the motor drives the rotating shaft to rotate, and the rotating shaft drives the filter cylinder to rotate, so as to screen the old sand, and the screened material enters the gap between the filter cylinder and the outer shell under the action of centrifugal force, and at the same time, new sand is added to the interior of the guide plate, and the new sand enters the interior through the through hole, and collides and mixes with the screened material, so that the two sand materials can intersperse and stir with each other during the contact process, which helps to break the agglomeration of the sand particles and make the new sand and the old sand more evenly distributed. Distributed throughout the system, the uniformity of molding sand mixing is improved, thereby ensuring the consistency of molding sand performance and providing stable molding sand quality for subsequent molding and casting processes. The buffer component is located inside the lower hopper, and a protrusion is fixedly connected to the inside of the lower hopper. There are multiple protrusions, and the multiple protrusions are evenly distributed around the rotating shaft. A scraper is fixedly connected to the bottom of the lower hopper, and the rotating shaft drives the filter cartridge to rotate. The scraper cleans the inner wall of the filter cartridge to prevent the filter cartridge from being blocked. There are multiple scrapers, and the multiple scrapers are evenly distributed around the rotating shaft. The inner wall of the outer shell is rotatably connected to a swivel, and the inner wall of the swivel is fixedly connected to the filter cartridge. The scraper is located inside the filter cartridge, and the scraper contacts the inner wall of the filter cartridge. An inclined plate is fixedly connected to the bottom of the swivel, and the inclined plate is prevented from directly contacting the filter cartridge with new sand entering the through hole, thereby damaging the filter cartridge. The inclined plate is located on the side close to the through hole.

[0012] Preferably, the buffer assembly includes a connecting block, which is fixedly connected to the top of the rotating shaft, a fixing column is fixedly connected to the middle of the top of the connecting block, a circular groove is provided on the top of the fixing column, an elastic rope is fixedly connected to the top edge of the connecting block, and an arc plate is fixedly connected to the end of the elastic rope away from the connecting block, and material is added to the interior of the feeding assembly, the material contacts and squeezes the top of the arc plate, and the arc plate is forced to drive the ball to rotate inside the circular groove, and the elastic rope on one side is stretched tight, and under the elastic force of the elastic rope, the arc plate is reset, so that the material falls onto the lower hopper and then enters the interior of the filter cylinder, there are multiple elastic ropes, and the multiple elastic ropes are evenly distributed with the connecting block as the center, a material guide groove is provided on the top of the arc plate, there are multiple material guide grooves, and the multiple material guide grooves are evenly distributed on the outside of the arc plate, a ball is rotatably connected to the inside of the circular groove, and the ball is fixedly connected to the bottom middle of the arc plate.

[0013] The present invention provides a pig iron casting regenerated sand mixing device, which has the following beneficial effects:

[0014] 1. The pig iron casting regenerated sand mixing equipment has a fan-shaped fixed plate design, which can make the fixed plate cover a larger area when rotating, improve the mixing efficiency, make the mixed regenerated sand and binder more evenly dispersed, reduce the dead angle of sand mixing, and improve the quality of sand mixing.

[0015] Second, the cast iron casting regenerated sand mixing equipment has round holes on the fixed plate, which can form a more complex flow path for the material during the mixing process. When the fan blades rotate, part of the material will flow from one side to the other through the round holes, increasing the lateral flow of the material, avoiding excessive accumulation of the material in a local area, making the material more evenly distributed in the sand mixing equipment, thereby improving the overall mixing effect.

[0016] 3. The cast iron casting recycled sand mixing equipment drives the fixed plate, round rod and square plate to rotate through the rotating shaft, so as to stir the materials in the upper, middle and lower positions inside the shell, and can form a complex material flow pattern inside the shell, so that the materials can be fully stirred and mixed at different heights and positions, effectively reducing the dead angle of sand mixing and improving the uniformity and consistency of sand mixing.

[0017] 4. The cast iron casting recycled sand mixing equipment uses the elastic properties of the spiral plate and the spring to reset the fixed ring and the round rod. Under the action of the material flow, the fixed plate is reset to a vertical state. The inclination of the fixed plate can make the material form a more complex and reasonable flow path during the mixing process, increase the mutual interlacing and mixing of the materials, and reduce the local accumulation or uneven mixing of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a structural schematic diagram of a cross-sectional view of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the stirring assembly of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure of a part of the stirring assembly of the present invention;

[0022] Figure 5 It is a structural schematic diagram of the disassembled diagram of the stirring assembly of the present invention;

[0023] Figure 6 It is a structural schematic diagram of the connecting piece of the present invention;

[0024] Figure 7 It is a structural schematic diagram of a cross-sectional view of a feed assembly of the present invention;

[0025] Figure 8 It is a schematic diagram of the structure of the buffer assembly of the present invention;

[0026] Fig. 9 It is a structural schematic diagram of a bottom view of a buffer assembly of the present invention;

[0027] Fig.10 It is a structural schematic diagram of a cross-sectional view of the buffer assembly of the present invention.

[0028] In the figure: 1, housing; 2, motor; 3, support plate; 4, feed assembly; 41, housing; 42, through hole; 43, guide plate; 44, protective tube; 45, lower hopper; 46, bump; 47, scraper; 48, filter tube; 49, inclined plate; 410, swivel; 5, discharge pipe; 6, limit plate; 7, buffer assembly; 71, arc plate; 72, guide trough; 73, connecting block; 74, fixing column; 75 , elastic rope; 76, round groove; 77, round ball; 8, stirring assembly; 81, connecting piece; 811, fixing ring; 812, sliding block; 813, baffle; 814, ring groove; 815, positioning block; 816, extension rod; 82, fixing plate; 83, spiral plate; 84, round hole; 85, fixing rod; 86, square plate; 87, round rod; 88, spring; 89, middle block; 9, rotating shaft; 10, slide groove. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] The first embodiment, as Figures 1 to 4 As shown, the present invention provides a technical solution: a cast iron casting regenerated sand mixing equipment, comprising a support plate 3, and a pillar fixedly installed at the bottom of the support plate 3, the support plate 3 is fixedly connected with a shell 1 inside, the outer side of the shell 1 is fixedly connected with a discharge pipe 5, the bottom of the shell 1 is fixedly connected with a motor 2, the inner wall of the shell 1 is fixedly connected with a limit plate 6, the number of the limit plates 6 is multiple, and the limit plates are symmetrically arranged with the extension rod 816 as the center, the shell 1 is rotatably connected with a rotating shaft 9 inside, the outer side of the rotating shaft 9 is provided with a slide groove 10, and the rotating shaft 9 is fixedly connected to the output end of the motor 2;

[0031] A feed assembly 4, which is fixedly mounted on the top of the housing 1;

[0032] A stirring assembly 8, wherein the stirring assembly 8 is fixedly connected to the outer side of the rotating shaft 9;

[0033] A buffer assembly 7, wherein the buffer assembly 7 is fixedly mounted on the top of the rotating shaft 9;

[0034] Among them, the stirring component 8 includes an intermediate block 89, which is fixedly connected to the outer side of the rotating shaft 9, and a connecting piece 81 is fixedly connected to the outer side of the rotating shaft 9. There are two connecting pieces 81, and the two connecting pieces 81 are symmetrically arranged with the intermediate block 89 as the center. A round rod 87 is slidably connected to the outer side of the connecting piece 81, and a fixed plate 82 is rotatably connected to the outer side of the round rod 87. The material is added to the interior of the shell 1 through the feeding component 4, and the motor 2 is connected to an external power supply to work. The motor 2 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the fixed plate 82 to rotate, so as to stir the material inside the shell 1. Since the fixed plate 82 is a fan-shaped design, the fixed plate 82 can cover a larger area when rotating, thereby improving the stirring efficiency, so that the mixed regenerated sand and the binder can be more evenly dispersed, reducing the dead corners of sand mixing, and improving the quality of sand mixing. At the same time, by arranging a circular hole 84 on the fixed plate 82, the circular hole can enable the material to form a more complex flow path during the stirring process. When the fan blades rotate, part of the material will flow from one side to the other side through the circular holes, increasing the lateral flow of the material, avoiding excessive accumulation of the material in a local area, and making the material more evenly distributed in the sand mixing equipment, thereby improving the overall mixing effect. The fixed plate 82 is fan-shaped, and a circular hole 84 is opened on the outside of the fixed plate 82. The diameter of the circular hole 84 gradually increases from the rotating shaft 9 to the edge of the fixed plate 82. The smaller circular hole can allow the material to have a certain resistance to passing through, avoiding the material from flowing out of the central area too quickly, and ensuring that the material has enough residence time in the central area for mixing. As the distance from the rotating shaft 9 increases, the linear velocity of the material gradually increases. The larger circular hole can allow the material to pass through the fan blades more smoothly, reducing the accumulation of the material on the surface of the fixed plate 82, so that the material can quickly flow from the inside to the outside of the mixing area, promoting the uniform distribution of the material in the entire sand mixing equipment. There are multiple fixed plates 82, and the multiple fixed plates 82 are evenly distributed with the connecting piece 81 as the center.

[0035] The second embodiment is based on the first embodiment. Figures 5 and 6As shown, one end of the round rod 87 away from the connecting piece 81 is fixedly connected with a spiral plate 83, the spiral plate 83 is elastic, and the two ends of the spiral plate 83 are fixedly connected with the two round rods 87 on both sides of the middle block 89, the spiral plate 83 is connected with two adjacent round rods 87, and the outer side of the middle block 89 is fixedly connected with a fixed rod 85, and the rotating shaft 9 drives the fixed plate 82, the round rod 87 and the square plate 86 to rotate, so as to stir the materials at different positions of the upper, middle and lower parts inside the shell 1, and can form a complex material flow pattern inside the shell 1, so that the materials can be fully stirred at different heights and positions. Stirring and mixing can effectively reduce the dead angle of sand mixing and improve the uniformity and consistency of sand mixing. There are multiple fixed rods 85, and the multiple fixed rods 85 are evenly distributed with the middle block 89 as the center. The end of the fixed rod 85 away from the middle block 89 is fixedly connected to the middle of the spiral plate 83, and the outer side of the fixed rod 85 is fixedly connected with a square plate 86. The end of the middle block 89 close to the connecting piece 81 is fixedly connected with a spring 88, and the spring 88 is sleeved on the outer side of the rotating shaft 9. The end of the spring 88 away from the middle block 89 is fixedly connected to the connecting piece 81, and the spring 88 is symmetrically arranged with the middle block 89 as the center.

[0036] The connecting member 81 includes a fixed ring 811, and a slider 812 is fixedly connected to the inner wall of the fixed ring 811. There are multiple sliders 812, and the multiple sliders 812 are evenly distributed around the fixed ring 811. The slider 812 is located inside the slide 10. The fixed ring 811 is slidably connected to the shaft 9 through the slider 812. When the material is added to the inside of the shell 1, the motor 2 is connected to the external power supply to work, and the motor 2 drives the shaft 9 to rotate. The shaft 9 drives the fixed ring 811 and the extension rod 816 to rotate, so that the extension rod 81 6 slides inside the two limit plates 6. Since the limit plates 6 are inclined, as the shaft 9 rotates, the extension rod 816 and the limit plate 6 are squeezed, the spring 88 is compressed, and the fixing ring 811 slides downward inside the slide groove 10 outside the shaft 9 through the slider 812. At this time, the fixing rings 811 on both sides of the middle block 89 move toward the middle block 89. Under the support of the spiral plate 83, the spiral plate 83 pushes the round rod 87 to slide inside the ring groove 814, so that one side of the fixing plate 82 contacts the positioning block 815, so that the fixing plate 82 is in an inclined state. As the extension rod 816 moves away from the limit plate 6, the elastic properties of the spiral plate 83 and the spring 88 are used to reset the fixing ring 811 and the round rod 87. Under the action of the material flow, the fixing plate 82 is reset to a vertical state. The tilt change of the fixing plate 82 can form a more complex and reasonable flow path for the material during the mixing process, increase the mutual interpenetration and mixing between the materials, reduce the local accumulation or uneven mixing of the materials, and fix An annular groove 814 is provided on the outer side of the ring 811, and the end of the round rod 87 away from the spiral plate 83 is located inside the annular groove 814, and the round rod 87 is slidably connected to the annular groove 814. A baffle 813 is fixedly connected to the outer side of the fixed ring 811, and an extension rod 816 is fixedly connected to the outer side of the fixed ring 811. There are multiple extension rods 816, and there are multiple baffles 813. The baffles 813 and the extension rods 816 are alternately arranged, and a positioning block 815 is fixedly connected to the outer side of the fixed ring 811 near the middle block 89.

[0037] The third embodiment is based on the first and second embodiments. Figures 7 to 10As shown, the feed assembly 4 includes a shell 41, which is fixedly mounted on the top of the housing 1. A through hole 42 is opened on the outer side of the shell 41. There are multiple through holes 42, which are evenly distributed on the shell 41. A guide plate 43 is fixedly connected to the outer side of the shell 41. A lower hopper 45 is fixedly connected to the top of the shell 41. A protective cylinder 44 is fixedly connected to the top of the lower hopper 45. Old sand is added to the inside of the protective cylinder 44, so that the old sand flows downward along the lower hopper 45, so that the old sand falls into the inside of the filter cylinder 48. The motor 2 is connected to an external power source to work, and the motor 2 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the filter cartridge 48 to rotate, so as to screen the old sand. Under the action of centrifugal force, the screened material enters the gap between the filter cartridge 48 and the outer shell 41, and at the same time, new sand is added to the inside of the guide plate 43, and the new sand enters the inside through the through hole 42, and collides and mixes with the screened material, so that the two sand materials can intersperse and stir each other during the contact process, which helps to break the agglomeration state of the sand particles and make the new sand and the old sand more evenly distributed in the whole system. The uniformity of the molding sand mixing is improved, thereby ensuring the consistency of the molding sand performance and providing stable molding sand quality for the subsequent modeling and casting processes. The buffer component 7 is located inside the lower hopper 45. The lower hopper 45 is fixedly connected with a protrusion 46. The number of protrusions 46 is set to be multiple, and the multiple protrusions 46 are evenly distributed around the rotating shaft 9. The bottom of the lower hopper 45 is fixedly connected with a scraper 47. The rotating shaft 9 drives the filter cartridge 48 to rotate. The scraper 47 cleans the inner wall of the filter cartridge 48 to prevent the filter cartridge 48 from being blocked. There are multiple scrapers 47, and the multiple scrapers 47 are evenly distributed around the rotating shaft 9. The inner wall of the outer shell 41 is rotatably connected to a swivel 410, and the inner wall of the swivel 410 is fixedly connected to a filter cartridge 48. The scraper 47 is located inside the filter cartridge 48, and the scraper 47 contacts the inner wall of the filter cartridge 48. The bottom of the swivel 410 is fixedly connected to an inclined plate 49. By setting the inclined plate 49, new sand entering the through hole 42 is prevented from directly contacting the filter cartridge 48, thereby damaging the filter cartridge 48. The inclined plate 49 is located on the side close to the through hole 42.

[0038] The buffer assembly 7 includes a connecting block 73, which is fixedly connected to the top of the rotating shaft 9. A fixing column 74 is fixedly connected to the middle of the top of the connecting block 73. A circular groove 76 is provided on the top of the fixing column 74. An elastic rope 75 is fixedly connected to the top edge of the connecting block 73. An end of the elastic rope 75 away from the connecting block 73 is fixedly connected to an arc plate 71. When material is added to the inside of the feeding assembly 4, the material contacts and squeezes the top of the arc plate 71. The arc plate 71 is forced to drive the ball 77 to rotate inside the circular groove 76. The elastic rope 75 on one side The force rope 75 is stretched tight, and under the elastic force of the elastic rope 75, the arc plate 71 is reset, so that the material falls onto the lower hopper 45 and then enters the interior of the filter cylinder 48. There are multiple elastic ropes 75, and the multiple elastic ropes 75 are evenly distributed around the connecting block 73. A material guide groove 72 is opened on the top of the arc plate 71. There are multiple material guide grooves 72, and the multiple material guide grooves 72 are evenly distributed on the outside of the arc plate 71. A ball 77 is rotatably connected to the inside of the circular groove 76, and the ball 77 is fixedly connected to the middle of the bottom of the arc plate 71.

[0039] When in use, old sand is added to the inside of the protective cylinder 44, so that the old sand flows downward along the lower hopper 45, and then falls into the inside of the filter cylinder 48. The motor 2 is connected to an external power supply to work, and the motor 2 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the filter cylinder 48 to rotate, so as to screen the old sand. Under the action of centrifugal force, the screened material enters the gap between the filter cylinder 48 and the outer shell 41. At the same time, new sand is added to the inside of the guide plate 43, and the new sand enters the inside through the through hole 42, and collides and mixes with the screened material.

[0040] Then the material enters the shell 1, and the motor 2 is connected to an external power supply to work. The motor 2 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the fixing ring 811 and the extension rod 816 to rotate, so that the extension rod 816 slides inside the two limit plates 6. Since the limit plates 6 are set to be inclined, as the rotating shaft 9 rotates, the extension rod 816 and the limit plates 6 are squeezed, and the spring 88 is compressed. The fixing ring 811 slides downward inside the slide groove 10 outside the rotating shaft 9 through the slider 812. At this time, the fixing rings 811 on both sides of the middle block 89 move toward the direction of the middle block 89. Under the support of plate 83, spiral plate 83 pushes round rod 87 to slide inside annular groove 814, so that one side of fixed plate 82 contacts with positioning block 815, and thus fixed plate 82 is in an inclined state. As extension rod 816 moves away from limiting plate 6, the elastic properties of spiral plate 83 and spring 88 are utilized to reset fixed ring 811 and round rod 87. Under the action of material flow, fixed plate 82 is reset to a vertical state. The tilt change of fixed plate 82 can form a more complex and reasonable flow path for materials during the mixing process, thereby increasing the mutual interpenetration and mixing between materials.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0042] 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 pig iron casting regenerated sand mixing equipment, characterized in that: include: A support plate (3), and a support column fixedly mounted on the bottom of the support plate (3), wherein the support plate (3) is fixedly connected to a housing (1) inside, the housing (1) is fixedly connected to a discharge pipe (5) outside, the housing (1) is fixedly connected to a motor (2) at the bottom, the inner wall of the housing (1) is fixedly connected to a limit plate (6), the housing (1) is rotatably connected to a rotating shaft (9) inside, a sliding groove (10) is provided on the outer side of the rotating shaft (9), and the rotating shaft (9) is fixedly connected to an output end of the motor (2); A feed assembly (4), wherein the feed assembly (4) is fixedly mounted on the top of the housing (1); A stirring assembly (8), wherein the stirring assembly (8) is fixedly connected to the outer side of the rotating shaft (9); A buffer assembly (7), wherein the buffer assembly (7) is fixedly mounted on the top of the rotating shaft (9); The stirring assembly (8) comprises an intermediate block (89), wherein the intermediate block (89) is fixedly connected to the outer side of the rotating shaft (9), and a connecting piece (81) is fixedly connected to the outer side of the rotating shaft (9). There are two connecting pieces (81), and the two connecting pieces (81) are symmetrically arranged with the intermediate block (89) as the center. A round rod (87) is slidably connected to the outer side of the connecting piece (81), and a fixed plate (82) is rotatably connected to the outer side of the round rod (87). The fixed plate (82) is arranged in a fan shape, and a round hole (84) is opened on the outer side of the fixed plate (82). There are multiple fixed plates (82), and the multiple fixed plates (82) are evenly distributed with the connecting piece (81) as the center.

2. The pig iron casting regenerated sand mixing equipment according to claim 1 is characterized in that: One end of the round rod (87) away from the connecting piece (81) is fixedly connected to a spiral plate (83), and both ends of the spiral plate (83) are fixedly connected to two round rods (87) on both sides of the middle block (89). The spiral plate (83) is connected to two adjacent round rods (87). The outer side of the middle block (89) is fixedly connected to a fixing rod (85). There are a plurality of fixing rods (85), and the plurality of fixing rods (85) are evenly distributed around the middle block (89).

3. The pig iron casting regenerated sand mixing equipment according to claim 2 is characterized in that: One end of the fixing rod (85) away from the middle block (89) is fixedly connected to the middle part of the spiral plate (83); a square plate (86) is fixedly connected to the outer side of the fixing rod (85); one end of the middle block (89) close to the connecting piece (81) is fixedly connected to a spring (88); the spring (88) is sleeved on the outer side of the rotating shaft (9); one end of the spring (88) away from the middle block (89) is fixedly connected to the connecting piece (81); and the spring (88) is symmetrically arranged with the middle block (89) as the center.

4. The pig iron casting regenerated sand mixing equipment according to claim 3 is characterized in that: The connecting member (81) comprises a fixing ring (811), the inner wall of which is fixedly connected to a sliding block (812), the number of the sliding blocks (812) being multiple, the multiple sliding blocks (812) being evenly distributed around the fixing ring (811), the sliding block (812) being located inside the sliding groove (10), the fixing ring (811) being slidably connected to the rotating shaft (9) via the sliding block (812), and an annular groove (814) being provided on the outer side of the fixing ring (811).

5. The pig iron casting regenerated sand mixing equipment according to claim 4, characterized in that: One end of the round rod (87) away from the spiral plate (83) is located inside the annular groove (814), and the round rod (87) is slidably connected to the annular groove (814). A baffle plate (813) is fixedly connected to the outer side of the fixing ring (811), and an extension rod (816) is fixedly connected to the outer side of the fixing ring (811). There are multiple extension rods (816), and there are multiple baffle plates (813). The baffle plates (813) and the extension rods (816) are arranged alternately, and a positioning block (815) is fixedly connected to the outer side of one end of the fixing ring (811) close to the middle block (89).

6. The pig iron casting regenerated sand mixing equipment according to claim 1, characterized in that: The feed assembly (4) comprises an outer shell (41), the outer shell (41) being fixedly mounted on the top of the housing (1), the outer side of the outer shell (41) being provided with a through hole (42), the through holes (42) being provided in a plurality, the plurality of through holes (42) being evenly distributed on the outer shell (41), the outer side of the outer shell (41) being fixedly connected to a material guide plate (43), and the top of the outer shell (41) being fixedly connected to a lower hopper (45).

7. The pig iron casting regenerated sand mixing equipment according to claim 6, characterized in that: The top of the lower hopper (45) is fixedly connected to a protective tube (44), the buffer assembly (7) is located inside the lower hopper (45), the inside of the lower hopper (45) is fixedly connected to a protrusion (46), there are multiple protrusions (46), and the multiple protrusions (46) are evenly distributed around the rotating shaft (9), and the bottom of the lower hopper (45) is fixedly connected to a scraper (47), there are multiple scrapers (47), and the multiple scrapers (47) are evenly distributed around the rotating shaft (9).

8. The pig iron casting regenerated sand mixing equipment according to claim 7, characterized in that: The inner wall of the housing (41) is rotatably connected to a rotating ring (410), the inner wall of the rotating ring (410) is fixedly connected to a filter cartridge (48), the scraper (47) is located inside the filter cartridge (48), and the scraper (47) is in contact with the inner wall of the filter cartridge (48), and the bottom of the rotating ring (410) is fixedly connected to an inclined plate (49), and the inclined plate (49) is located on a side close to the through hole (42).

9. The pig iron casting regenerated sand mixing equipment according to claim 1, characterized in that: The buffer assembly (7) comprises a connecting block (73), the connecting block (73) being fixedly connected to the top of the rotating shaft (9), a fixing column (74) being fixedly connected to the middle of the top of the connecting block (73), a circular groove (76) being provided at the top of the fixing column (74), an elastic rope (75) being fixedly connected to the top edge of the connecting block (73), and an end of the elastic rope (75) away from the connecting block (73) being fixedly connected to an arc plate (71).

10. The pig iron casting regenerated sand mixing equipment according to claim 9, characterized in that: There are a plurality of elastic ropes (75), which are evenly distributed around the connecting block (73). A material guide groove (72) is provided on the top of the arc plate (71). There are a plurality of material guide grooves (72), which are evenly distributed on the outside of the arc plate (71). A round ball (77) is rotatably connected inside the round groove (76), and the round ball (77) is fixedly connected to the middle of the bottom of the arc plate (71).

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