Sand mixing equipment for precoated sand production and processing and use method of sand mixing equipment

Abstract

The invention relates to the technical field of precoated sand production, and discloses sand mixing equipment for precoated sand production and processing and a using method thereof.The sand mixing equipment comprises a sand mixing frame, the top of the sand mixing frame communicates with a feeding frame, a support is fixedly connected to the surface of the sand mixing frame, an opening and closing door is hinged to the surface of the sand mixing frame, and a protection frame is fixedly connected to the bottom of the inner wall of the sand mixing frame; a motor is fixedly connected to the inner wall of the protection frame, the pretreatment component comprises a conical frame, the upper surface of the conical frame is fixedly connected with the inner wall of the sand mixing frame, discharging holes are formed in the surface and the bottom of the conical frame, and a rotating rod is fixedly connected to the output end of the motor. After precoated sand raw materials are added into the feeding frame, the motor is started to drive the pretreatment component to start working, the pretreatment component can conduct limited mixing treatment on the raw materials, and it is avoided that after the raw materials enter the sand mixing frame, layering is obvious, and consequently the mixing time is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of coated sand production, and in particular to a sand mixing device for producing and processing coated sand and a use method thereof. Background Art

[0002] Coated sand is mainly used in the casting process. It has the advantages of high strength, low gas emission, fast solidification speed, easy disintegration, high temperature resistance, deformation resistance, sand sticking resistance, shelling resistance, etc. Its production process includes cold coating, warm coating and hot coating. Among them, hot coating process is the most commonly used. Coated sand is coated with a layer of solid resin film on the surface of sand particles, which can be quickly solidified and formed when heated. It is widely used in the production of steel castings and iron castings. Cold coating is to dissolve the resin with ethanol and add hexamethylenetetramine in the sand mixing process so that the two are coated on the surface of the sand particles. After the ethanol evaporates, the coated sand is obtained;

[0003] When processing coated sand, various raw materials need to be placed inside the sand mixing device for mixing. The operator will add each raw material into the sand mixing device one by one. Directly pouring various raw materials into the sand mixing device will cause the raw materials to be clearly layered up and down. The sand mixing device needs to use a long time to mix the raw materials, which results in low mixing efficiency of the coated sand. Summary of the invention

[0004] The object of the present invention is to provide a sand mixing device for the production and processing of coated sand and a method of using the same, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a sand mixing device for producing and processing coated sand and a method for using the same, comprising a sand mixing frame, the top of the sand mixing frame is connected to a feeding frame, the surface of the sand mixing frame is fixedly connected to a bracket, the surface of the sand mixing frame is hinged with an opening and closing door, the bottom of the inner wall of the sand mixing frame is fixedly connected to a protective frame, the inner wall of the protective frame is fixedly connected to a motor, and further comprising:

[0007] A pretreatment component, the pretreatment component comprises a cone frame, the upper surface of the cone frame is fixedly connected to the inner wall of the sand mixing frame, the surface and the bottom of the cone frame are both provided with feeding holes, and the output end of the motor is fixedly connected to a rotating rod;

[0008] A sand mixing component, the sand mixing component comprises a rotating frame, the inner wall of the rotating frame is fixedly connected to the surface of the rotating rod, and the rotating frame is located below the conical frame;

[0009] A dredging component, the dredging component comprises a circular groove frame, the surface of the circular groove frame is fixedly connected to the inner wall of the sand mixing frame, the inner wall of the circular groove frame is rotatably connected to a positioning ring, and the inner wall of the positioning ring is fixedly connected to a bent plate;

[0010] A material discharge component is arranged at the bottom of the sand mixing frame.

[0011] Further, the pretreatment component includes a mounting frame, the inner wall of the mounting frame is fixedly connected to the surface of the rotating rod, the surface of the mounting frame is fixedly connected to a limit plate, the top of the limit plate is fixedly connected to a connecting rod, the top of the connecting rod is fixedly connected to a bevel ring, and the inner wall of the bevel ring is fixedly connected to a mixing plate;

[0012] The bottom of the limit plate is fixedly connected with an elastic rod, the bottom of the elastic rod is fixedly connected with a stirring plate, and the lower surface of the connecting rod is fixedly connected with a triangular mixing block.

[0013] Furthermore, the surface of the bevel ring is fixedly connected to the inner wall of the feed rack, the end of the mixing plate away from the bevel ring is arranged to be inclined upward, and a plurality of mixing plates are arranged on the inner wall of the mixing plate, and the ends of the plurality of mixing plates away from the bevel ring are arranged close to each other, the top of the connecting rod extends to the interior of the feed rack, the surface of the stirring plate contacts the inner wall of the conical rack, and the top of the rotating rod passes through the conical rack and extends to the interior of the conical rack.

[0014] Furthermore, the sand mixing component comprises a sand mixing plate, the surface of the sand mixing plate is fixedly connected to the surface of the rotating frame, and the upper surface of the sand mixing plate is provided with mixing holes;

[0015] A through hole is opened on the lower surface of the sand mixing plate, and an inclined plate is fixedly connected to the inner wall of the through hole.

[0016] Furthermore, the number of the sand mixing plates is set to four, and the four sand mixing plates are arranged with the rotating frame as the center circumference, the end of the sand mixing plate away from the rotating frame contacts the inner wall of the sand mixing frame, the end of the inclined plate passes through the sand mixing plate and extends to the outer end of the sand mixing plate, and the bottom of the inclined plate contacts the bottom of the inner wall of the sand mixing frame.

[0017] Further, the dredging component comprises an elastic rod, the end of the elastic rod is fixedly connected to the inner wall of the positioning ring, the end of the elastic rod away from the positioning ring is fixedly connected to an adapter plate, and the end of the adapter plate away from the elastic rod is fixedly connected to a semicircular block;

[0018] One end of the bent plate away from the positioning ring is fixedly connected with a linkage ring, and the surface of the linkage ring is fixedly connected to the inner wall of the sand mixing plate.

[0019] Furthermore, there are four adapter plates, which are circumferentially distributed inside the positioning ring, and one end of the adapter plate away from the elastic rod contacts the surface of the cone frame, and the surface of the semicircular block contacts the inner wall of the feed hole.

[0020] Further, the unloading component includes a semicircular frame, the top of the semicircular frame is fixedly connected to the bottom of the sand mixing frame, the bottom of the sand mixing frame is fixedly connected to an electric push rod, the bottom of the electric push rod is fixedly connected to a lifting frame, and the top of the lifting frame is fixedly connected to a semicircular plate;

[0021] The surface of the semicircular plate contacts the inner wall of the semicircular frame, and the top of the semicircular plate and the bottom of the inner wall of the sand mixing frame are arranged horizontally.

[0022] Furthermore, a method for using a sand mixing device for producing and processing coated sand comprises the following steps:

[0023] S1: When the motor rotates, it drives the mounting frame to rotate through the rotating rod. When the mounting frame rotates, it pushes the stirring plate to rotate through the connection between the limit plate and the elastic rod. When the stirring plate rotates, it mixes the raw materials that fall into the cone frame, so that the coated sand raw materials that enter the sand mixing frame can be mixed again through the sand mixing component;

[0024] S2: When the rotating rod rotates, the mixing plate is driven to rotate through the rotating frame. When the mixing plate rotates, the raw materials inside the mixing frame are mixed. After the raw materials are mixed inside the conical frame, they are mixed again.

[0025] S3: When the positioning ring rotates, the adapter plate drives the adapter plate to contact the surface of the cone frame through the elastic rod. When the semicircular block corresponds to the inner wall of the discharge hole, the adapter plate will use the elasticity of the elastic rod to push the semicircular block into the inside of the discharge hole to dredge it;

[0026] S4: Start the electric push rod to push the lifting frame downward. When the lifting frame moves downward, it will drive the semicircular plate to move downward and separate from the inner wall of the semicircular frame. After the semicircular plate is separated from the inner wall of the semicircular frame, the raw materials in the sand mixing frame will be discharged from the outer end of the sand mixing frame through the semicircular frame.

[0027] The present invention has the following beneficial effects:

[0028] After the present invention adds the coated sand raw material into the interior of the feed rack, the motor is started to drive the pretreatment component to start operation. The pretreatment component can perform limited mixing treatment on the raw material to avoid obvious stratification of the raw material after entering the interior of the sand mixing rack, which leads to an increase in mixing time. The processed raw material will fall to the bottom of the interior of the sand mixing rack. When the pretreatment component processes the raw material, the sand mixing component will also start operation at the same time. The sand mixing component is used to mix the raw material to improve the mixing efficiency of the coated sand. When the sand mixing component is operating, the dredging component will push the dredging component to operate, and the inside of the discharge hole will be dredged by the dredging component to avoid the processed raw material being stuck in the interior of the conical rack and affecting the discharge efficiency. After the coating sand is mixed, the discharge component is started to start operation, so that the coated sand in the sand mixing rack can be collected and transported.

[0029] When the motor of the present invention rotates, it will drive the mounting frame to rotate through the rotating rod. When the mounting frame rotates, it will push the stirring plate to rotate through the connection between the limit plate and the elastic rod. When the stirring plate rotates, it will mix the raw materials that fall into the conical frame, so that the coated sand raw materials that enter the sand mixing frame can be mixed again through the sand mixing component, further improving the sand mixing efficiency of the coated sand raw materials. When the limit plate rotates, it will drive the triangular mixing block to rotate through the connecting rod. When the triangular mixing block rotates, it will push the raw materials inside the conical frame to move toward the inner wall of the conical frame, so that the raw materials can be pre-mixed inside the conical frame, and when the connecting rod rotates, it will drive the mixing plate to stir the raw materials through the inclined ring, so as to avoid the raw materials being stuck inside the feed frame and affecting the feeding effect.

[0030] When the rotating rod of the present invention rotates, the sand mixing plate is driven to rotate through the rotating frame. When the sand mixing plate rotates, the raw materials inside the sand mixing frame are mixed. After the raw materials are mixed inside the conical frame, they are mixed again, thereby improving the mixing efficiency of the coated sand raw materials. When the sand mixing plate rotates, the bottom of the inclined plate will be pushed to rotate at the bottom of the inner wall of the sand mixing frame. When the inclined plate rotates, it can push the transported materials at the bottom of the inner wall of the sand mixing frame to flow upward, thereby preventing the raw materials that preferentially fall into the sand mixing frame from accumulating at the bottom of the inner wall of the sand mixing frame and affecting the mixing effect.

[0031] When the sand mixing plate of the present invention rotates, the bending plate is driven to rotate through the linkage ring. When the bending plate rotates, it pushes the positioning ring to rotate inside the circular groove frame. When the positioning ring rotates, it drives the adapter plate to contact the surface of the conical frame through the elastic rod. When the semicircular block corresponds to the inner wall of the discharge hole, the adapter plate will use the elasticity of the elastic rod to push the semicircular block into the inside of the discharge hole to dredge it, so as to avoid the raw materials being stuck in the inside of the discharge hole and affecting the discharge effect. At the same time, the contact and separation of the semicircular block and the conical frame will generate vibration, and the vibration can make the raw materials in the conical frame fall into the inside of the sand mixing frame for sand mixing.

[0032] After the raw materials are mixed, the electric push rod is started to push the lifting frame to move downward. When the lifting frame moves downward, the semicircular plate will be driven to move downward and separate from the inner wall of the semicircular frame. After the semicircular plate is separated from the inner wall of the semicircular frame, the raw materials in the sand mixing frame will be discharged from the outer end of the sand mixing frame through the semicircular frame, so as to unload and collect the mixed coated sand raw materials.

[0033] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0036] Figure 2 This is a schematic diagram of the cross-sectional structure of the sand mixing frame of the present invention;

[0037] Figure 3 It is a schematic diagram of the overall structure of the pretreatment component of the present invention;

[0038] Figure 4 Another structural schematic diagram of the pretreatment component of the present invention;

[0039] Figure 5 This is a schematic diagram of the overall structure of the sand mixing component of the present invention;

[0040] Figure 6 It is a schematic diagram of the overall structure of the dredging component of the present invention;

[0041] Figure 7 Another structural schematic diagram of the dredging component of the present invention;

[0042] Figure 8 It is a schematic diagram of the overall structure of the blanking component of the present invention;

[0043] Fig. 9 It is a schematic diagram of the process structure of the present invention.

[0044] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0045] In the figure: 1. Sand mixing rack; 2. Feeding rack; 3. Opening and closing door; 4. Bracket; 5. Protective frame; 6. Motor; 7. Pretreatment component; 8. Sand mixing component; 9. Dredging component; 10. Unloading component; 20. Conical rack; 21. Unloading hole; 22. Rotating rod; 23. Bevel ring; 24. Mixing plate; 25. Mounting rack; 26. Connecting rod; 27. Limiting plate; 28. Stirring plate; 29. ​​Elastic rod; 30. Triangular mixing block; 40. Rotating rack; 41. Inclined plate; 42. Through hole; 43. Mixing hole; 44. Sand mixing plate; 50. Circular groove rack; 51. Adapter plate; 52. Semicircular block; 53. Positioning ring; 54. Elastic rod; 55. Bending plate; 56. Interlocking ring; 60. Semicircular plate; 61. Lifting rack; 62. Electric push rod; 63. Semicircular rack. DETAILED DESCRIPTION

[0046] 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.

[0047] See also Figure 1-Figure 9 As shown, the present invention is a sand mixing device for producing and processing coated sand and a method for using the same, comprising a sand mixing frame 1, the top of the sand mixing frame 1 is connected to a feeding frame 2, the surface of the sand mixing frame 1 is fixedly connected to a bracket 4, the surface of the sand mixing frame 1 is hinged with an opening and closing door 3, the bottom of the inner wall of the sand mixing frame 1 is fixedly connected to a protective frame 5, the inner wall of the protective frame 5 is fixedly connected to a motor 6, and further comprising:

[0048] The pretreatment component 7 includes a cone frame 20, the upper surface of the cone frame 20 is fixedly connected to the inner wall of the sand mixing frame 1, the surface and the bottom of the cone frame 20 are both provided with feeding holes 21, and the output end of the motor 6 is fixedly connected to a rotating rod 22;

[0049] The sand mixing component 8 includes a rotating frame 40, the inner wall of the rotating frame 40 is fixedly connected to the surface of the rotating rod 22, and the rotating frame 40 is located below the conical frame 20;

[0050] The dredging component 9 includes a circular groove frame 50, the surface of the circular groove frame 50 is fixedly connected to the inner wall of the sand mixing frame 1, and the inner wall of the circular groove frame 50 is rotatably connected with a positioning ring 53. After the coated sand raw material is added to the inside of the feeding frame 2, the motor 6 is started to drive the pretreatment component 7 to start working. The pretreatment component 7 can perform limited mixing treatment on the raw material to avoid the raw material from entering the inside of the sand mixing frame 1. The stratification obviously causes the mixing time to increase. The processed raw material will fall to the bottom of the inside of the sand mixing frame 1. The pretreatment component 7 When the material is being processed, the sand mixing component 8 will also start working at the same time, and the raw materials are mixed and processed by the sand mixing component 8 to improve the mixing efficiency of the coated sand. When the sand mixing component 8 is working, it will push the dredging component 9 to work, and the inside of the discharge hole 21 is dredged by the dredging component 9 to avoid the processed raw materials being stuck inside the cone frame 20 and affecting the discharge efficiency. After the coated sand is mixed, the discharge component 10 is started to start working, so that the coated sand in the sand mixing frame 1 can be collected and transported. The inner wall of the positioning ring 53 is fixedly connected with a bent plate 55;

[0051] A material discharge component 10 is provided at the bottom of the sand mixing frame 1 .

[0052] The pretreatment component 7 includes a mounting frame 25, the inner wall of the mounting frame 25 is fixedly connected to the surface of the rotating rod 22, the surface of the mounting frame 25 is fixedly connected to a limit plate 27, the top of the limit plate 27 is fixedly connected to a connecting rod 26, the top of the connecting rod 26 is fixedly connected to a bevel ring 23, and the inner wall of the bevel ring 23 is fixedly connected to a mixing plate 24;

[0053] The bottom of the limiting plate 27 is fixedly connected to an elastic rod 29 , the bottom of the elastic rod 29 is fixedly connected to a stirring plate 28 , and the lower surface of the connecting rod 26 is fixedly connected to a triangular mixing block 30 .

[0054] The surface of the bevel ring 23 is fixedly connected to the inner wall of the feed frame 2, and the end of the mixing plate 24 away from the bevel ring 23 is inclined upward, and the inner wall of the mixing plate 24 is provided with multiple mixing plates 24, and the ends of the multiple mixing plates 24 away from the bevel ring 23 are arranged close to each other. When the motor 6 of the present invention rotates, it will drive the mounting frame 25 to rotate through the rotating rod 22. When the mounting frame 25 rotates, it drives the stirring plate 28 to rotate through the connection between the limit plate 27 and the elastic rod 29. When the stirring plate 28 rotates, it will mix the raw materials that fall into the inside of the conical frame 20, so that the coated sand raw materials entering the sand mixing frame 1 can be mixed again through the sand mixing component 8, and further In order to improve the sand mixing efficiency of the coated sand raw material, the limit plate 27 drives the triangular mixing block 30 to rotate through the connecting rod 26 when rotating. The triangular mixing block 30 will push the raw material inside the conical frame 20 to move to the inner wall of the conical frame 20 when rotating, so that the raw material can be pre-mixed inside the conical frame 20, and the connecting rod 26 will drive the mixing plate 24 to stir the raw material through the bevel ring 23 when rotating to prevent the raw material from being stuck inside the feed frame 2 and affecting the feeding effect. The top of the connecting rod 26 extends to the inside of the feed frame 2, the surface of the stirring plate 28 contacts the inner wall of the conical frame 20, and the top of the rotating rod 22 passes through the conical frame 20 and extends to the inside of the conical frame 20.

[0055] The sand mixing component 8 includes a sand mixing plate 44, the surface of which is fixedly connected to the surface of the rotating frame 40, and a mixing hole 43 is formed on the upper surface of the sand mixing plate 44;

[0056] A through hole 42 is formed on the lower surface of the sand mixing plate 44 , and an inclined plate 41 is fixedly connected to the inner wall of the through hole 42 .

[0057] The sand mixing plates 44 are provided with four in number, and the four sand mixing plates 44 are arranged on the circumference of the rotating frame 40 as the center. The end of the sand mixing plates 44 away from the rotating frame 40 contacts the inner wall of the sand mixing frame 1. When the rotating rod 22 of the present invention rotates, the sand mixing plates 44 are driven to rotate through the rotating frame 40. The sand mixing plates 44 mix the raw materials inside the sand mixing frame 1 when rotating. After the raw materials are mixed inside the conical frame 20, they are mixed again, thereby improving the mixing efficiency of the coated sand raw materials. When the sand mixing plates 44 rotate, the bottom of the inclined plate 41 will be pushed to rotate at the bottom of the inner wall of the sand mixing frame 1. When the inclined plate 41 rotates, it can push the transported materials at the bottom of the inner wall of the sand mixing frame 1 to flow upward, so as to avoid the raw materials that preferentially fall into the sand mixing frame 1 from accumulating at the bottom of the inner wall of the sand mixing frame 1 and affecting the mixing effect. The end of the inclined plate 41 passes through the sand mixing plates 44 and extends to the outer end of the sand mixing plates 44, and the bottom of the inclined plate 41 contacts the bottom of the inner wall of the sand mixing frame 1.

[0058] The dredging component 9 includes an elastic rod 54, the end of which is fixedly connected to the inner wall of the positioning ring 53, the end of the elastic rod 54 away from the positioning ring 53 is fixedly connected to the adapter plate 51, and the end of the adapter plate 51 away from the elastic rod 54 is fixedly connected to the semicircular block 52;

[0059] One end of the bent plate 55 away from the positioning ring 53 is fixedly connected to a linkage ring 56 , and the surface of the linkage ring 56 is fixedly connected to the inner wall of the sand mixing plate 44 .

[0060] There are four adapter plates 51, which are circumferentially distributed inside the positioning ring 53. When the sand mixing plate 44 of the present invention rotates, the bent plate 55 is driven to rotate through the linkage ring 56. When the bent plate 55 is rotated, it will push the positioning ring 53 to rotate inside the circular groove frame 50. When the positioning ring 53 rotates, it drives the adapter plate 51 to contact the surface of the cone frame 20 through the elastic rod 54. When the semicircular block 52 corresponds to the inner wall of the discharge hole 21, the adapter plate 51 will use the elasticity of the elastic rod 54 to push the semicircular block 52 into the inside of the discharge hole 21 for dredging, so as to avoid the raw material being stuck in the inside of the discharge hole 21 and affecting the discharge effect. At the same time, the contact and separation of the semicircular block 52 and the cone frame 20 will generate vibration, which can cause the raw material in the cone frame 20 to fall into the inside of the sand mixing frame 1 for sand mixing. The end of the adapter plate 51 away from the elastic rod 54 is in contact with the surface of the cone frame 20, and the surface of the semicircular block 52 is in contact with the inner wall of the discharge hole 21.

[0061] The unloading component 10 includes a semicircular frame 63, the top of the semicircular frame 63 is fixedly connected to the bottom of the sand mixing frame 1, the bottom of the sand mixing frame 1 is fixedly connected to an electric push rod 62, the bottom of the electric push rod 62 is fixedly connected to a lifting frame 61, and the top of the lifting frame 61 is fixedly connected to a semicircular plate 60;

[0062] The surface of the semicircular plate 60 contacts the inner wall of the semicircular frame 63. After the raw materials are mixed in the present invention, the electric push rod 62 is started to push the lifting frame 61 to move downward. When the lifting frame 61 moves downward, it will drive the semicircular plate 60 to move downward and separate from the inner wall of the semicircular frame 63. After the semicircular plate 60 is separated from the inner wall of the semicircular frame 63, the raw materials in the sand mixing frame 1 will be discharged from the outer end of the sand mixing frame 1 through the semicircular frame 63, so as to unload and collect the mixed coated sand raw materials. The top of the semicircular plate 60 and the bottom of the inner wall of the sand mixing frame 1 are horizontally arranged.

[0063] A method for using a sand mixing device for producing and processing coated sand comprises the following steps:

[0064] S1: When the motor 6 rotates, it drives the mounting frame 25 to rotate through the rotating rod 22. When the mounting frame 25 rotates, it pushes the stirring plate 28 to rotate through the connection between the limit plate 27 and the elastic rod 29. When the stirring plate 28 rotates, it mixes the raw materials that fall into the conical frame 20, so that the coated sand raw materials that enter the sand mixing frame 1 can be mixed again through the sand mixing component 8;

[0065] S2: The rotating rod 22 drives the sand mixing plate 44 to rotate through the rotating frame 40. The sand mixing plate 44 mixes the raw materials inside the sand mixing frame 1 when rotating. The raw materials are mixed inside the conical frame 20 and then mixed again.

[0066] S3: When the positioning ring 53 rotates, the adaptor plate 51 is driven by the elastic rod 54 to contact the surface of the cone frame 20. When the semicircular block 52 corresponds to the inner wall of the discharge hole 21, the adaptor plate 51 uses the elasticity of the elastic rod 54 to push the semicircular block 52 into the inside of the discharge hole 21 to clear it.

[0067] S4: Start the electric push rod 62 to push the lifting frame 61 to move downward. When the lifting frame 61 moves downward, it will drive the semicircular plate 60 to move downward and separate from the inner wall of the semicircular frame 63. After the semicircular plate 60 is separated from the inner wall of the semicircular frame 63, the raw materials in the sand mixing frame 1 will be discharged from the outer end of the sand mixing frame 1 through the semicircular frame 63.

[0068] When in use, after adding the coated sand raw material into the interior of the feeding rack 2, the motor 6 is started to drive the pretreatment component 7 to start working. The pretreatment component 7 can perform limited mixing treatment on the raw material to avoid the raw material from entering the interior of the sand mixing rack 1 and stratifying significantly, which leads to an increase in mixing time. The processed raw material will fall to the bottom of the interior of the sand mixing rack 1. When the pretreatment component 7 is processing the raw material, the sand mixing component 8 will also start working at the same time. The sand mixing component 8 is used to mix the raw material to improve the mixing efficiency of the coated sand. The sand mixing component 8 will push the dredging component 9 to operate during operation, and the dredging component 9 is used to dredge the interior of the discharge hole 21 to avoid the processed raw material from being stuck in the interior of the conical rack 20 and affecting the discharge efficiency. After the coating sand is mixed, the discharge component is started The component 10 starts to work, so that the coated sand in the sand mixing frame 1 can be collected and transported. When the motor 6 rotates, it will drive the mounting frame 25 to rotate through the rotating rod 22. When the mounting frame 25 rotates, it pushes the stirring plate 28 to rotate through the connection between the limit plate 27 and the elastic rod 29. When the stirring plate 28 rotates, it will mix the raw materials that fall into the inside of the conical frame 20, so that the coated sand raw materials entering the sand mixing frame 1 can be mixed again through the sand mixing component 8, further improving the sand mixing efficiency of the coated sand raw materials. When the limit plate 27 rotates, it drives the triangular mixing block 30 to rotate through the connecting rod 26. When the triangular mixing block 30 rotates, it will push the raw materials inside the conical frame 20 to move to the inner wall of the conical frame 20, so that the raw materials can be mixed in the inner wall of the conical frame 20. The raw materials are pre-mixed, and the connecting rod 26 drives the mixing plate 24 to stir the raw materials through the inclined ring 23 when rotating, so as to prevent the raw materials from being stuck in the feeding frame 2 and affecting the feeding effect. The rotating rod 22 drives the sand mixing plate 44 to rotate through the rotating frame 40 when rotating. The sand mixing plate 44 mixes the raw materials inside the sand mixing frame 1 when rotating. After the raw materials are mixed inside the conical frame 20, they are mixed again, thereby improving the mixing efficiency of the coated sand raw materials. When the sand mixing plate 44 rotates, it will push the bottom of the inclined plate 41 to rotate at the bottom of the inner wall of the sand mixing frame 1. When the inclined plate 41 rotates, it can push the transported materials at the bottom of the inner wall of the sand mixing frame 1 to flow upward, so as to prevent the raw materials that preferentially fall into the sand mixing frame 1 from accumulating at the bottom of the inner wall of the sand mixing frame 1 and affecting the mixing effect. When rotating, the interlocking ring 56 drives the bent plate 55 to rotate. When rotating, the bent plate 55 pushes the positioning ring 53 to rotate inside the circular groove frame 50. When rotating, the positioning ring 53 drives the adapter plate 51 to contact the surface of the conical frame 20 through the elastic rod 54. When the semicircular block 52 corresponds to the inner wall of the material discharge hole 21, the adapter plate 51 uses the elasticity of the elastic rod 54 to push the semicircular block 52 into the inside of the material discharge hole 21 to clear it, so as to prevent the raw material from being stuck in the inside of the material discharge hole 21 and affecting the material discharge effect. At the same time, the semicircular block 52 will vibrate when it contacts and separates from the conical frame 20. The vibration can make the raw material in the conical frame 20 fall into the inside of the sand mixing frame 1 for sand mixing. After the raw material mixing is completed, the electric push rod 62 is started to push the lifting frame 61 to move downward.When the lifting frame 61 moves downward, it will drive the semicircular plate 60 to move downward and separate from the inner wall of the semicircular frame 63. After the semicircular plate 60 is separated from the inner wall of the semicircular frame 63, the raw materials in the sand mixing frame 1 will be discharged from the outer end of the sand mixing frame 1 through the semicircular frame 63, so as to unload and collect the mixed coated sand raw materials.

[0069] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A sand mixing device for producing and processing coated sand, comprising a sand mixing frame (1), the top of the sand mixing frame (1) is connected to a feeding frame (2), the surface of the sand mixing frame (1) is fixedly connected to a bracket (4), the surface of the sand mixing frame (1) is hinged with an opening and closing door (3), the bottom of the inner wall of the sand mixing frame (1) is fixedly connected to a protective frame (5), and the inner wall of the protective frame (5) is fixedly connected to a motor (6), characterized in that: Also includes: A pretreatment component (7), the pretreatment component (7) comprising a cone frame (20), the upper surface of the cone frame (20) being fixedly connected to the inner wall of the sand mixing frame (1), the surface and the bottom of the cone frame (20) being provided with a feeding hole (21), and the output end of the motor (6) being fixedly connected to a rotating rod (22); A sand mixing component (8), the sand mixing component (8) comprising a rotating frame (40), the inner wall of the rotating frame (40) being fixedly connected to the surface of the rotating rod (22), and the rotating frame (40) being located below the conical frame (20); A dredging component (9), the dredging component (9) comprising a circular groove frame (50), the surface of the circular groove frame (50) being fixedly connected to the inner wall of the sand mixing frame (1), the inner wall of the circular groove frame (50) being rotatably connected to a positioning ring (53), and the inner wall of the positioning ring (53) being fixedly connected to a bent plate (55); A material discharge component (10) is provided at the bottom of the sand mixing frame (1).

2. The sand mixing equipment for producing and processing coated sand according to claim 1 is characterized in that: The pretreatment component (7) comprises a mounting frame (25), the inner wall of the mounting frame (25) is fixedly connected to the surface of the rotating rod (22), the surface of the mounting frame (25) is fixedly connected to a limit plate (27), the top of the limit plate (27) is fixedly connected to a connecting rod (26), the top of the connecting rod (26) is fixedly connected to a bevel ring (23), and the inner wall of the bevel ring (23) is fixedly connected to a mixing plate (24); The bottom of the limiting plate (27) is fixedly connected to an elastic rod (29), the bottom of the elastic rod (29) is fixedly connected to a stirring plate (28), and the lower surface of the connecting rod (26) is fixedly connected to a triangular mixing block (30).

3. The sand mixing equipment for producing and processing coated sand according to claim 2 is characterized in that: The surface of the bevel ring (23) is fixedly connected to the inner wall of the feed frame (2); the end of the mixing plate (24) away from the bevel ring (23) is arranged to be inclined upward, and the inner wall of the mixing plate (24) is provided with a plurality of mixing plates (24); the ends of the plurality of mixing plates (24) away from the bevel ring (23) are arranged close to each other; the top of the connecting rod (26) extends to the inside of the feed frame (2); the surface of the stirring plate (28) contacts the inner wall of the conical frame (20); and the top of the rotating rod (22) penetrates the conical frame (20) and extends to the inside of the conical frame (20).

4. The sand mixing equipment for producing and processing coated sand according to claim 3 is characterized in that: The sand mixing component (8) comprises a sand mixing plate (44), the surface of the sand mixing plate (44) is fixedly connected to the surface of the rotating frame (40), and the upper surface of the sand mixing plate (44) is provided with mixing holes (43); A through hole (42) is provided on the lower surface of the sand mixing plate (44), and an inclined plate (41) is fixedly connected to the inner wall of the through hole (42).

5. The sand mixing equipment for producing and processing coated sand according to claim 4 is characterized in that: The number of the sand mixing plates (44) is four, and the four sand mixing plates (44) are arranged around the rotating frame (40) as a central circle. One end of the sand mixing plate (44) away from the rotating frame (40) contacts the inner wall of the sand mixing frame (1), the end of the inclined plate (41) passes through the sand mixing plate (44) and extends to the outer end of the sand mixing plate (44), and the bottom of the inclined plate (41) contacts the bottom of the inner wall of the sand mixing frame (1).

6. The sand mixing equipment for producing and processing coated sand according to claim 5 is characterized in that: The dredging component (9) comprises an elastic rod (54), the end of which is fixedly connected to the inner wall of the positioning ring (53), the end of which is away from the positioning ring (53) is fixedly connected to an adapter plate (51), and the end of which is away from the elastic rod (54) is fixedly connected to a semicircular block (52); One end of the bent plate (55) away from the positioning ring (53) is fixedly connected to a linkage ring (56), and the surface of the linkage ring (56) is fixedly connected to the inner wall of the sand mixing plate (44).

7. The sand mixing equipment for producing and processing coated sand according to claim 6 is characterized by: The number of the adapter plates (51) is four, and the four adapter plates (51) are circumferentially distributed inside the positioning ring (53). One end of the adapter plate (51) away from the elastic rod (54) contacts the surface of the conical frame (20), and the surface of the semicircular block (52) contacts the inner wall of the discharge hole (21).

8. The sand mixing equipment for producing and processing coated sand according to claim 7, characterized in that: The material unloading component (10) comprises a semicircular frame (63), the top of the semicircular frame (63) is fixedly connected to the bottom of the sand mixing frame (1), the bottom of the sand mixing frame (1) is fixedly connected to an electric push rod (62), the bottom of the electric push rod (62) is fixedly connected to a lifting frame (61), and the top of the lifting frame (61) is fixedly connected to a semicircular plate (60); The surface of the semicircular plate (60) contacts the inner wall of the semicircular frame (63), and the top of the semicircular plate (60) and the bottom of the inner wall of the sand mixing frame (1) are arranged horizontally.

9. The method for using the sand mixing equipment for producing and processing coated sand according to claim 8, characterized in that: The following steps are involved: S1: When the motor (6) rotates, it drives the mounting frame (25) to rotate through the rotating rod (22). When the mounting frame (25) rotates, it pushes the stirring plate (28) to rotate through the connection between the limit plate (27) and the elastic rod (29). When the stirring plate (28) rotates, it mixes the raw materials that fall into the conical frame (20), so that the coated sand raw materials that enter the sand mixing frame (1) can be mixed again through the sand mixing component (8); S2: When the rotating rod (22) rotates, it drives the sand mixing plate (44) to rotate through the rotating frame (40). When the sand mixing plate (44) rotates, it mixes the raw materials inside the sand mixing frame (1). After the raw materials are mixed inside the conical frame (20), they are mixed again. S3: When the positioning ring (53) rotates, the adaptor plate (51) is driven by the elastic rod (54) to contact the surface of the cone frame (20). When the semicircular block (52) corresponds to the inner wall of the discharge hole (21), the adaptor plate (51) uses the elasticity of the elastic rod (54) to push the semicircular block (52) into the discharge hole (21) to clear it. S4: The electric push rod (62) is started to push the lifting frame (61) to move downward. When the lifting frame (61) moves downward, it drives the semicircular plate (60) to move downward and separate from the inner wall of the semicircular frame (63). After the semicircular plate (60) is separated from the inner wall of the semicircular frame (63), the raw materials in the sand mixing frame (1) are discharged from the outer end of the sand mixing frame (1) through the semicircular frame (63).

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