Sand treatment device for nodular cast iron casting

Abstract

The utility model relates to a sand treatment device for nodular cast iron casting, which belongs to the technical field of sand treatment and comprises a treatment box, the bottom end of the inner wall of the treatment box is fixedly connected with a blanking box, the outer side of the treatment box is fixedly connected with an L-shaped conveying pipe, the inside of the L-shaped conveying pipe is rotatably connected with a conveying auger, and the L-shaped conveying pipe is fixedly connected with the blanking box. A pushing plate is slidably connected to the interior of the discharging box. The sand screening device has the beneficial effects that sand and impurities fall into the discharging box after being screened, a piston rod of an electric telescopic rod stretches out, a pushing plate can be pushed to slide, and then the sand in the discharging box can be pushed into an L-shaped conveying pipe, so that the sand at the bottom end can be driven to ascend through rotation of a conveying auger, and the sand is conveyed to the discharging box; and the sandy soil can be conveyed into the treatment box again through the discharging plate for secondary screening work, so that the secondary feeding efficiency of the sandy soil can be improved, and the sandy soil screening effect is better.

Description

Technical Field

[0001] The utility model relates to the technical field of sand processing, in particular to a sand processing device for ductile iron casting. Background Art

[0002] There will be many underground pipelines in urban construction. These pipelines must have an exit to the ground at intervals. In order to protect the exit, manhole covers will be installed at the exit to ensure normal driving on the road. During the casting process of the manhole cover, the molten metal will be poured into the concave sand box to ensure the one-piece molding effect of the manhole cover. The sand inside the sand box can be used many times, and certain impurities may remain inside the sand. If it is not treated in advance, it will affect the subsequent casting of the manhole cover.

[0003] After searching, a Chinese patent discloses a sand processing device for ductile iron manhole cover casting (authorization announcement number CN220311668U), including a fuselage, a support plate fixedly connected to the top of the fuselage, a feeding hopper fixedly connected to the side wall of the support plate, a fixed plate fixedly connected to the left inner wall of the fuselage, a motor fixedly connected to the top of the fixed plate, the output shaft of the motor extends to the bottom of the fixed plate and is fixedly connected to a cam, and two strip grooves are provided on the inner wall of the fuselage on the right side of the fixed plate, and connecting rods are slidably provided on the inner walls of the two strip grooves respectively, and a moving frame is fixedly sleeved on the rod walls of the two connecting rods at the same time, and the moving frame is located below the feeding hopper. Although this patented technology can promptly process the sand after casting, it can prevent the sand from agglomerating or being mixed with impurities, and ensure the subsequent reuse of the sand.

[0004] However, the above device still has some shortcomings in actual use. The most obvious one is that when the above-mentioned sand processing device for ductile iron manhole cover casting separates sand and impurities, the filtered sand will fall into the waste box, and there will be a large amount of impurities in the sand, and the impurities in the sand cannot be removed cleanly in one or two times. However, when the sand is screened for the second time, the sand that falls into the waste box needs to be poured into the feeding hopper again. The secondary screening is more troublesome and the intermediate feeding time is longer, which makes the overall screening efficiency of the sand poor. Utility Model Content

[0005] In view of the existing technology, when the sand processing device for ductile iron manhole cover casting separates sand and impurities, the filtered sand will fall into the waste box, and there will be a large amount of impurities in the sand, and it is impossible to remove the impurities in the sand once or twice. However, when the sand is screened for the second time, the sand that falls into the waste box needs to be poured into the feeding hopper again. The secondary screening is more troublesome and the intermediate feeding time is longer, resulting in poor overall screening efficiency of the sand. The main purpose of the utility model is to provide a sand processing device for ductile iron casting.

[0006] The technical solution of the utility model is as follows: a sand processing device for ductile iron casting comprises a processing box, the bottom end of the inner wall of the processing box is fixedly connected to a feed box, the outer side of the processing box is fixedly connected to an L-shaped conveying pipe, the interior of the L-shaped conveying pipe is rotatably connected to a conveying auger, the L-shaped conveying pipe is fixedly connected to the feed box, the interior of the feed box is slidably connected to a pushing plate, an electric telescopic rod is fixedly installed on the outer side of the feed box, the piston rod of the electric telescopic rod extends to the interior of the feed box and is fixedly connected to the pushing plate, the top end of the outer side of the L-shaped conveying pipe is fixedly connected to the feed plate, and a screening mechanism is arranged inside the processing box.

[0007] By adopting the above technical solution, the piston rod of the electric telescopic rod is extended to push the pushing plate to slide, and then the sand and soil in the discharge box can be pushed into the L-shaped conveying pipe. The sand and soil at the bottom can be driven to rise by the rotation of the conveying auger, and the discharge plate can be used to transport the sand and soil to the processing box for secondary screening.

[0008] As a preferred embodiment, the screening mechanism includes two fixed plates fixedly connected to the inner wall of the processing box, the top of the fixed plate is rotatably connected to the filter plate, the inside of the filter plate is slidably connected to two limit rods, the inner wall of the processing box is fixedly connected to a mounting plate below the filter plate, the bottom ends of the limit rods are fixedly connected to the mounting plate, and springs are sleeved on the outside of the limit rods and on both sides of the filter plate.

[0009] By adopting the above technical solution, through the coordinated use of the limit rod and the spring, the vibration frequency of the filter plate can be accelerated, thereby achieving a better screening effect on sand and soil.

[0010] As a preferred embodiment, the screening mechanism also includes two first servo motors fixedly installed on the rear side of the processing box, the output shafts of the first servo motors extend into the interior of the processing box and are fixedly connected to two cams, and the outer sides of the cams are in conflict with the bottom end of the filter plate.

[0011] By adopting the above technical solution, the rotation of the output shaft of the first servo motor can drive the cam to rotate, thereby driving the filter plate to vibrate rapidly.

[0012] As a preferred embodiment, the interior of the fixed plate is slidably connected with a material receiving plate, the interior of the processing box and one side of the fixed plate is provided with a taking groove, and the inner wall of the taking groove is hinged with a closed door.

[0013] By adopting the above technical solution and arranging the receiving plate and the taking groove, it is convenient to draw the receiving plate out from the fixing plate, and then it is convenient to dump the impurities in the receiving plate.

[0014] As a preferred embodiment, a feed hopper is fixedly mounted on the top of the inner wall of the processing box, an opening and closing door is hinged on the outer side of the discharge box, and a revolving door is hinged on the outer side of the processing box.

[0015] By adopting the above technical solution and arranging the rotating door and the opening and closing door, the filtered sand and soil in the discharge box can be taken out easily.

[0016] As a preferred embodiment, a second servo motor is fixedly mounted on the top end of the L-shaped conveying pipe, and an output shaft of the second servo motor extends into the interior of the L-shaped conveying pipe and is fixedly connected to the conveying auger.

[0017] By adopting the above technical solution, the conveying auger can be driven to rotate.

[0018] Compared with the prior art, the advantages and positive effects of the utility model are:

[0019] 1. In the utility model, after the sand and impurities are screened, they will fall into the discharge box, and the piston rod of the electric telescopic rod will be extended to push the pushing plate to slide, so that the sand in the discharge box can be pushed into the L-shaped conveying pipe. By rotating the conveying auger, the sand at the bottom can be driven to rise, and the discharge plate can be used to transport the sand to the processing box for secondary screening, thereby speeding up the secondary feeding efficiency of the sand and making the sand screening effect better.

[0020] 2. In the present invention, the vibration frequency of the filter plate can be accelerated by the coordinated use of the limit rod and the spring, thereby achieving a better screening effect on the sand and soil, and at the same time accelerating the overall screening efficiency of the sand and soil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a rear view of the utility model;

[0022] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the conveying mechanism of the utility model;

[0024] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle.

[0025] Legend: 1. Processing box; 2. First servo motor; 3. Feed hopper; 4. Discharge plate; 5. Second servo motor; 6. L-shaped conveying pipe; 7. Fixed plate; 8. Receiving plate; 9. Mounting plate; 10. Filter plate; 11. Spring; 12. Limit rod; 13. Cam; 14. Pick-up slot; 15. Push plate; 16. Discharge box; 17. Electric telescopic rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0027] Reference Figure 1-4 The sand processing device for ductile iron casting comprises a processing box 1, a feed box 16 is fixedly connected to the bottom end of the inner wall of the processing box 1, an L-shaped conveying pipe 6 is fixedly connected to the outside of the processing box 1, a conveying auger is rotatably connected to the inside of the L-shaped conveying pipe 6, the L-shaped conveying pipe 6 is fixedly connected to the feed box 16, a pushing plate 15 is slidably connected to the inside of the feed box 16, an electric telescopic rod 17 is fixedly installed on the outside of the feed box 16, a piston rod of the electric telescopic rod 17 extends to the inside of the feed box 16 and is fixedly connected to the pushing plate 15, a feed plate 4 is fixedly connected to the top end of the outside of the L-shaped conveying pipe 6, and a screening mechanism is arranged inside the processing box 1.

[0028] When in use, after the sand and impurities are screened, they will fall into the discharge box 16, and the piston rod of the electric telescopic rod 17 will be extended to push the pushing plate 15 to slide, and then the sand in the discharge box 16 can be pushed into the L-shaped conveying pipe 6. Through the rotation of the conveying auger, the sand at the bottom can be driven to rise, and the discharge plate 4 can be used to transport the sand to the processing box 1 for secondary screening, thereby speeding up the secondary feeding efficiency of the sand and making the sand screening effect better.

[0029] Reference Figure 2 The screening mechanism includes two fixed plates 7 fixedly connected to the inner wall of the processing box 1, the top of the fixed plate 7 is rotatably connected to the filter plate 10, the inside of the filter plate 10 is slidably connected to two limit rods 12, the inner wall of the processing box 1 and below the filter plate 10 are fixedly connected to a mounting plate 9, the bottom ends of the limit rods 12 are fixedly connected to the mounting plate 9, and springs 11 are sleeved on the outside of the limit rods 12 and on both sides of the filter plate 10.

[0030] When in use, the vibration frequency of the filter plate 10 can be accelerated by the coordinated use of the limiting rod 12 and the spring 11, thereby achieving a better screening effect on the sand and soil, and at the same time accelerating the overall screening efficiency of the sand and soil.

[0031] Reference Figure 1 The screening mechanism also includes two first servo motors 2 fixedly installed on the rear side of the processing box 1. The output shafts of the first servo motors 2 extend into the interior of the processing box 1 and are fixedly connected to two cams 13. The outer sides of the cams 13 are in conflict with the bottom end of the filter plate 10.

[0032] When in use, the rotation of the output shaft of the first servo motor 2 can drive the cam 13 to rotate, and further drive the filter plate 10 to vibrate rapidly.

[0033] Reference Figure 4 The interior of the fixed plate 7 is slidably connected with a receiving plate 8, and a taking groove 14 is opened inside the processing box 1 and on one side of the fixed plate 7, and the inner wall of the taking groove 14 is hinged with a closed door.

[0034] When in use, the receiving plate 8 and the taking groove 14 are arranged so as to facilitate the receiving plate 8 to be drawn out from the fixing plate 7 , thereby facilitating the dumping of impurities in the receiving plate 8 .

[0035] Reference Figure 2 A feed hopper 3 is fixedly installed on the top of the inner wall of the processing box 1, an opening and closing door is hinged on the outer side of the discharge box 16, and a revolving door is hinged on the outer side of the processing box 1. The feed hopper 3 is arranged to facilitate pouring sand and soil into the processing box 1, and the revolving door and the opening and closing door are arranged to facilitate taking out the filtered sand and soil in the discharge box 16.

[0036] Reference Figure 2 A second servo motor 5 is fixedly mounted on the top of the L-shaped conveying pipe 6. The output shaft of the second servo motor 5 extends into the interior of the L-shaped conveying pipe 6 and is fixedly connected to the conveying auger so as to drive the conveying auger to rotate.

[0037] Working principle: First, pour the sand into the processing box 1 through the feed hopper 3, and then start the first servo motor 2. The rotation of the output shaft of the first servo motor 2 can drive the rotation of the cam 13, and then drive the filter plate 10 to vibrate rapidly. The use of the limit rod 12 and the spring 11 can accelerate the vibration frequency of the filter plate 10, so that the screening effect of the sand can be better. After the sand and impurities are screened, they will fall into the discharge box 16. The piston rod of the electric telescopic rod 17 is extended to push the push plate 15 to slide, and then the sand in the discharge box 16 can be pushed into the L-shaped conveying pipe 6. Through the rotation of the conveying auger, the sand at the bottom can be driven to rise, and the discharge plate 4 can be used to transport the sand to the processing box 1 again for secondary screening, thereby accelerating the secondary feeding efficiency of the sand, so that the sand screening effect is better.

[0038] The above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sand processing device for ductile iron casting, comprising a processing box (1), characterized in that: The bottom end of the inner wall of the processing box (1) is fixedly connected to a material discharge box (16), the outer side of the processing box (1) is fixedly connected to an L-shaped conveying pipe (6), the interior of the L-shaped conveying pipe (6) is rotatably connected to a conveying auger, the L-shaped conveying pipe (6) is fixedly connected to the material discharge box (16), the interior of the material discharge box (16) is slidably connected to a pushing plate (15), the outer side of the material discharge box (16) is fixedly installed with an electric telescopic rod (17), the piston rod of the electric telescopic rod (17) extends to the interior of the material discharge box (16) and is fixedly connected to the pushing plate (15), the top end of the outer side of the L-shaped conveying pipe (6) is fixedly connected to a material discharge plate (4), and a screening mechanism is arranged inside the processing box (1).

2. The sand processing device for ductile iron casting according to claim 1 is characterized in that: The screening mechanism comprises two fixed plates (7) fixedly connected to the inner wall of the processing box (1); the top end of the fixed plate (7) is rotatably connected to a filter plate (10); the inside of the filter plate (10) is slidably connected to two limit rods (12); the inner wall of the processing box (1) is fixedly connected to a mounting plate (9) located below the filter plate (10); the bottom ends of the limit rods (12) are fixedly connected to the mounting plate (9); and springs (11) are sleeved on the outer sides of the limit rods (12) and on both sides of the filter plate (10).

3. The sand processing device for ductile iron casting according to claim 1 is characterized in that: The screening mechanism further comprises two first servo motors (2) fixedly mounted on the rear side of the processing box (1), the output shafts of the first servo motors (2) both extending into the interior of the processing box (1) and being fixedly connected to two cams (13), the outer sides of the cams (13) both abutting against the bottom end of the filter plate (10).

4. The sand processing device for ductile iron casting according to claim 2 is characterized in that: The interior of the fixed plate (7) is slidably connected to a receiving plate (8), and a taking groove (14) is provided inside the processing box (1) and on one side of the fixed plate (7), and the inner wall of the taking groove (14) is hinged with a closed door.

5. The sand processing device for ductile iron casting according to claim 1, characterized in that: A feed hopper (3) is fixedly mounted on the top of the inner wall of the processing box (1), an opening and closing door is hingedly connected to the outer side of the discharge box (16), and a rotating door is hingedly connected to the outer side of the processing box (1).

6. The sand processing device for ductile iron casting according to claim 1, characterized in that: A second servo motor (5) is fixedly mounted on the top end of the L-shaped conveying pipe (6), and an output shaft of the second servo motor (5) extends into the interior of the L-shaped conveying pipe (6) and is fixedly connected to the conveying auger.

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