A kind of regenerated sand mixing equipment for pig iron casting

Abstract

The present invention discloses a pig iron casting regenerated sand mixing equipment, and the present invention relates to the technical field of pig iron casting regenerated sand mixing equipment. The equipment comprises an intermediate block, the intermediate block is fixedly connected to the outer side of a rotating shaft, the outer side of the rotating shaft is fixedly connected with a connecting piece, there are two connecting pieces, the two connecting pieces are symmetrically arranged with the intermediate block as the center, the outer side of the connecting piece is slidably connected with a round rod, the outer side of the round rod is rotatably connected with a fixed plate, the fixed plate is fan-shaped, the outer side of the fixed plate is provided with a circular hole, there are multiple fixed plates, and the multiple fixed plates are evenly distributed with the connecting piece as the center. The pig iron casting regenerated sand mixing equipment, through the fan-shaped design of the fixed plate, can make the fixed plate cover a larger area when rotating, improve the stirring efficiency, make the mixed regenerated sand and binder more evenly dispersed, reduce the dead angle of sand mixing, improve the quality of sand mixing, and at the same time, the circular hole can make the material form a more complex flow path during the stirring process.

Description

Technical Field

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

[0002] With the advancement of Industry 4.0 and intelligent manufacturing, the traditional foundry industry faces pressure to transform and upgrade. Foundries need to improve production efficiency, product quality, and process controllability, while reducing labor costs and labor intensity. By integrating advanced automation equipment, control systems, and information technology, the Intelligent Casting Island enables automated, intelligent, and information-based management of the casting process, meeting modern industry's requirements for efficient, precise, and stable casting production. Sand mixing is a critical step in pig iron casting, and its quality directly impacts the quality and performance of the castings.

[0003] The traditional method of sand mixing is generally to directly mix a certain proportion of old sand with fresh raw sand to make them mix evenly. However, after a large amount of old sand and new sand are directly mixed together, it is difficult to quickly mix them evenly using 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 prone to wear, resulting in a reduced service life of the equipment parts. Summary of the Invention

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

[0005] A feed assembly 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 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, and 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 slidingly connected to a round rod, and the outer side of the round rod is rotatably connected to a fixed plate. The material is added to the interior of the shell through the feeding component, and the motor is connected to an external power supply. The motor drives the rotating shaft to rotate, and the rotating shaft drives the fixed plate to rotate, thereby stirring 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 in 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 make the material have a certain resistance to passage, 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 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 to a spiral plate, and the spiral plate has elasticity, and both ends of the spiral plate are fixedly connected to the two round rods on both sides of the middle block, and the spiral plate is connected to the two adjacent round rods, and the outer side of the middle block is fixedly connected to a fixed rod, and the rotating shaft drives the fixed plate, the round rod and the square plate to rotate, thereby stirring the materials at different positions above, middle and below 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. There are multiple fixed rods, and the multiple fixed rods are evenly distributed around the middle block as the center, and the fixed rod one end 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 to the square plate, and the end of the middle block close to the connecting piece is fixedly connected to a spring, and the spring is sleeved on the outer side of the rotating shaft, and the end of the spring away from the middle block is fixedly connected to the connecting piece, and the spring is symmetrically arranged around the middle block.

[0010] Preferably, the connecting piece includes a fixing ring, the inner wall of the fixing ring is fixedly connected with a slider, there are multiple sliders, and the multiple sliders are evenly distributed with the fixing ring as the center, the slider is located inside the slide groove, and the fixing ring is slidably connected to the rotating shaft through the slider, so that the material is added to the interior of the shell, the motor is connected to the 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 plate, the spring is compressed, and the fixing ring slides downward inside the slide groove outside the rotating shaft through the slider, at this time 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 plate 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 tilt change of the fixed plate 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, 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. The outer side of the fixed ring is fixedly connected to a baffle, and the outer side of the fixed ring is fixedly connected to an extension rod. There are multiple extension rods and multiple baffles. The baffles and the extension rods are alternately arranged, and the outer side of the fixed ring close to one end of the middle block is fixedly connected to a positioning 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 the old sand is added to the interior of the protective cylinder, so that the old sand flows downward along the lower hopper, so that 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, thereby screening 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, it improves the uniformity of sand mixing, thereby ensuring the consistency of sand performance and providing stable sand quality for subsequent molding and casting processes. The buffer assembly is located inside the lower hopper, and the interior of the lower hopper is fixedly connected with a protrusion. By setting the number of protrusions, there are multiple protrusions, and the multiple protrusions are evenly distributed with the rotating shaft as the center. The bottom of the lower hopper is fixedly connected with a scraper, and the rotating shaft drives the filter barrel to rotate. The scraper cleans the inner wall of the filter barrel to prevent the filter barrel from being blocked. There are multiple scrapers, and the multiple scrapers are evenly distributed with the rotating shaft as the center. The inner wall of the outer shell is rotatably connected with a swivel, and the inner wall of the swivel is fixedly connected with the filter barrel. The scraper is located inside the filter barrel, and the scraper contacts the inner wall of the filter barrel. The bottom of the swivel is fixedly connected with an inclined plate, and the inclined plate is provided to prevent new sand entering the through-hole from directly contacting the filter barrel, thereby causing damage to the filter barrel. 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, and a fixed column is fixedly connected to the middle of the top of the connecting block, and a circular groove is provided on the top of the fixed column, and an elastic rope is fixedly connected to the top edge of the connecting block, and the end of the elastic rope away from the connecting block is fixedly connected to an arc plate, and material is added to the interior of the feeding assembly, and the material contacts and squeezes the top of the arc plate. The arc plate is driven by force to drive the ball to rotate inside the circular groove, and the elastic rope on one side is stretched tight. 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, and a material guide groove is provided on the top of the arc plate, and the number of material guide grooves is multiple, and the multiple material guide grooves are evenly distributed on the outside of the arc plate. The inside of the circular groove is rotatably connected with a ball, and the ball is fixedly connected to the middle of the bottom of the arc plate.

[0013] The present invention provides a sand mixing device for regenerated sand in pig iron casting, 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 cover a larger area when the fixed plate rotates, 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, this pig iron casting regenerated sand mixing equipment features circular holes in the fixed plate, which create a more complex flow path for the material during mixing. As the blades rotate, some material flows from one side to the other through the holes, increasing lateral flow and preventing excessive accumulation in localized areas. This allows for a more even distribution of material within the mixing equipment, thereby improving the overall mixing effect.

[0016] 3. The pig iron casting recycled sand mixing equipment drives the fixed plate, round rod and square plate to rotate through the rotating shaft, thereby stirring the material at different positions of the upper, middle and lower parts inside the shell, and can form a complex material flow pattern inside the shell, so that the material 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 pig 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 change of the fixed plate can form a more complex and reasonable flow path of the material during the mixing process, increase the mutual interpenetration and mixing between 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 structural diagram of the present invention as a whole;

[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 structural diagram of a part of the stirring assembly of the present invention;

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

[0023] Figure 6 Schematic diagram of the structure 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 structural schematic diagram of the buffer assembly of the present invention;

[0026] Figure 9 This is a schematic structural diagram of a bottom view of the buffer assembly of the present invention;

[0027] Figure 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 cylinder; 45. Lower hopper; 46. Bump; 47. Scraper; 48. Filter cartridge; 49. Inclined plate; 410. Rotating ring; 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, slider; 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 clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts 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 pig 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 interior of the support plate 3 is fixedly connected to a shell 1, the outer side of the shell 1 is fixedly connected to a discharge pipe 5, the bottom of the shell 1 is fixedly connected to a motor 2, the inner wall of the shell 1 is fixedly connected to 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 interior of the shell 1 is rotatably connected to a rotating shaft 9, 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] The feed assembly 4 is fixedly mounted on the top of the housing 1;

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

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

[0034] Among them, the stirring assembly 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. The outer side of the connecting piece 81 is slidably connected to a round rod 87, and the outer side of the round rod 87 is rotatably connected to a fixed plate 82. The material is added to the interior of the shell 1 through the feeding assembly 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, thereby stirring 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 binder can be more evenly dispersed, reducing dead corners in sand mixing, and improving the quality of sand mixing. At the same time, by arranging circular holes 84 on the fixed plate 82, 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 distribution of the material in the sand mixing equipment more uniform, 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 make the material have a certain resistance to passage, 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, based on the first embodiment, see Figures 5 and 6As shown, one end of the round rod 87 away from the connecting piece 81 is fixedly connected to the spiral plate 83, which is elastic. The two ends of the spiral plate 83 are fixedly connected to the two round rods 87 on both sides of the middle block 89, and the spiral plate 83 is connected to two adjacent round rods 87. The outer side of the middle block 89 is fixedly connected to the fixed rod 85. The rotating shaft 9 drives the fixed plate 82, the round rod 87 and the square plate 86 to rotate, thereby stirring the material 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 material can be fully stirred at different heights and positions. Stirring and mixing, effectively reducing the dead angle of sand mixing, and improving 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 the inner wall of the fixed ring 811 is fixedly connected to a slider 812. There are multiple sliders 812, and the multiple sliders 812 are evenly distributed with the fixed ring 811 as the center. The slider 812 is located inside the chute 10. The fixed ring 811 is slidably connected to the rotating shaft 9 through the slider 812. When the material is added to the interior of the shell 1, the motor 2 is connected to the external power supply and drives the rotating shaft 9 to rotate. The rotating shaft 9 drives the fixed ring 811 and the extension rod 816 to rotate, so that the extension rod 81 The spring 88 is compressed, and the fixing ring 811 slides downward in 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 intermediate block 89 move toward the intermediate block 89. Under the support of the spiral plate 83, the spiral plate 83 pushes the round rod 87 to slide in 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 limiting 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 the fixing plate 82. 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. The round rod 87 is slidingly 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. A positioning block 815 is fixedly connected to the outer side of the fixed ring 811 near the end of the middle block 89.

[0037] The third embodiment, based on the first and second embodiments, see 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 outside of the shell 41. There are multiple through holes 42, and the multiple through holes 42 are evenly distributed on the shell 41. A guide plate 43 is fixedly connected to the outside 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, and the old sand falls into the inside of the filter cylinder 48. The motor 2 is connected to an external power source to work. The motor 2 drives the rotating shaft 9 to rotate, and the rotating shaft 9 drives the filter cartridge 48 to rotate, thereby screening 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. At the same time, new sand is added to the interior of the guide plate 43. The new sand enters the interior through the through hole 42 and collides and mixes with the screened material. 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 old sand more evenly distributed in the entire system. Improve the uniformity of molding sand mixing, thereby ensuring the consistency of molding sand performance and providing stable molding sand quality for subsequent molding and casting processes. The buffer component 7 is located inside the lower hopper 45. The lower hopper 45 is fixedly connected to a protrusion 46. The number of protrusions 46 is set to be multiple, and the multiple protrusions 46 are evenly distributed with the rotating shaft 9 as the center. The bottom of the lower hopper 45 is fixedly connected to a scraper 47. The rotating shaft 9 drives the filter drum 48 to rotate. The scraper 47 cleans the inner wall of the filter drum 48 to prevent the filter drum 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 the swivel 410, and the inner wall of the swivel 410 is fixedly connected to the 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 causing damage to 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. The end of the elastic rope 75 away from the connecting block 73 is fixedly connected to the arc plate 71. When material is added to the interior 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 with the connecting block 73 as the center. 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] During use, old sand is added to the interior of the protective cylinder 44, so that the old sand flows downward along the lower hopper 45, and thus falls into the interior 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, thereby screening 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 interior of the guide plate 43, and the new sand enters the interior through the through hole 42, and collides and mixes with the screened material.

[0040] Then the material enters the interior of the shell 1, the motor 2 is connected to the external power supply to work, the motor 2 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the fixed 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, the spring 88 is compressed, and the fixed ring 811 slides downward inside the slide groove 10 outside the rotating shaft 9 through the slider 812. At this time, the fixed 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 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 the material during the mixing process, thereby increasing the mutual interpenetration and mixing between materials.

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

[0042] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 pillar fixedly mounted on the bottom of the support plate (3), wherein the interior of the support plate (3) is fixedly connected to a housing (1), the exterior of the housing (1) is fixedly connected to a discharge pipe (5), the bottom of the housing (1) is fixedly connected to a motor (2), the inner wall of the housing (1) is fixedly connected to a limit plate (6), the interior of the housing (1) is rotatably connected to a rotating shaft (9), a sliding groove (10) is provided on the exterior of the rotating shaft (9), and the rotating shaft (9) is fixedly connected to the output end of the motor (2); A feed assembly (4), the feed assembly (4) being 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) includes a middle block (89), the middle block (89) is fixedly connected to the outer side of the rotating shaft (9), the outer side of the rotating shaft (9) is fixedly connected to a connecting piece (81), there are two connecting pieces (81), the two connecting pieces (81) are symmetrically arranged with the middle block (89) as the center, the outer side of the connecting piece (81) is slidably connected to a round rod (87), the outer side of the round rod (87) is rotatably connected to a fixed plate (82), the fixed plate (82) is fan-shaped, the outer side of the fixed plate (82) is provided with a circular hole (84), the number of the fixed plates (82) is multiple, and the multiple fixed plates (82) are evenly distributed with the connecting piece (81) as the center; One end of the round rod (87) away from the connecting member (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 multiple fixing rods (85), and the multiple fixing rods (85) are evenly distributed with the middle block (89) as the center. The end of the fixing rod (85) away from the middle block (89) is fixedly connected to the middle of the spiral plate (83), the outer side of the fixing rod (85) is fixedly connected to the square plate (86), the end of the middle block (89) close to the connecting member (81) is fixedly connected to the spring (88), 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 member (81), and the spring (88) is symmetrically arranged with the middle block (89) as the center.

2. The pig iron casting regenerated sand mixing equipment according to claim 1, characterized in that: The connecting member (81) includes a fixed ring (811), the inner wall of the fixed ring (811) is fixedly connected to a slider (812), 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 groove (10), the fixed ring (811) is slidably connected to the rotating shaft (9) through the slider (812), and a ring groove (814) is provided on the outer side of the fixed ring (811).

3. The pig iron casting regenerated sand mixing equipment according to claim 2, 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). The outer side of the fixing ring (811) is fixedly connected to a baffle (813), and the outer side of the fixing ring (811) is fixedly connected to an extension rod (816). There are multiple extension rods (816), and there are multiple baffles (813). The baffles (813) and the extension rods (816) are alternately arranged. The outer side of the fixing ring (811) close to one end of the intermediate block (89) is fixedly connected to a positioning block (815).

4. The pig iron casting regenerated sand mixing equipment according to claim 1, characterized in that: The feeding assembly (4) includes a shell (41), the shell (41) is fixedly mounted on the top of the housing (1), a through hole (42) is opened on the outside of the shell (41), the through holes (42) are multiple in number, and the multiple through holes (42) are evenly distributed on the shell (41), a guide plate (43) is fixedly connected to the outside of the shell (41), and a lower hopper (45) is fixedly connected to the top of the shell (41).

5. The pig iron casting regenerated sand mixing equipment according to claim 4, 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 interior of the lower hopper (45) is fixedly connected to a protrusion (46), the number of the protrusions (46) is multiple, 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), the number of the scraper (47) is multiple, and the multiple scrapers (47) are evenly distributed around the rotating shaft (9).

6. The pig iron casting regenerated sand mixing equipment according to claim 5, 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) contacts 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).

7. The pig iron casting regenerated sand mixing equipment according to claim 1, characterized in that: The buffer assembly (7) includes a connecting block (73), the connecting block (73) 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), and an end of the elastic rope (75) away from the connecting block (73) is fixedly connected to the arc plate (71).

8. The pig iron casting regenerated sand mixing equipment according to claim 7, characterized in that: 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 provided 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 inside the circular groove (76), and the ball (77) is fixedly connected to the middle of the bottom of the arc plate (71).

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