Stream inoculant recovery system
By designing an inoculant recovery system that utilizes purging and screening systems to automatically recover inoculants, the problem of inoculant spillage in foundries was solved, achieving efficient recovery and cost reduction, and improving casting quality.
Patent Information
- Application Number
- CN202422547139.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-10-22
AI Technical Summary
In the casting production line of the foundry, the inoculant is scattered on the surface of the mold during the pouring process, resulting in waste and contamination of the molding sand system. Existing manual cleaning methods are inefficient, labor-intensive, and affect the quality of the castings.
A flow-through inoculant recovery system was designed, including a purging system and a screening system. The system utilizes purging nozzles and a vibrating screen for automated recovery. A camera probe monitors the distribution of the inoculant and controls the purging speed and direction, while the vibrating screen is used to recover the inoculant.
This technology enables efficient recovery of inoculants, reduces production costs, decreases labor costs, improves production efficiency, and enhances casting quality.
Smart Images
Figure CN223505613U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting equipment technology, specifically to a system for recovering inoculant in a flow. Background Technology
[0002] In the casting process of the foundry's sand production line, the inoculant used during in-flow inoculation of molten iron consists of ferrosilicon particles with a particle size of 0.2-0.7mm. During pouring, compressed air blows the inoculant onto the molten iron stream through nozzles for inoculation. Inevitably, some ferrosilicon particles will scatter onto the upper surface of the mold. If these scattered ferrosilicon particles enter the molding sand system, it is wasteful and will cause contamination of the molding sand system, affecting the quality of the casting. To recover and reuse this inoculant, the scattered ferrosilicon particles need to be removed from the mold before the casting is removed from the sand. The conventional method is manual cleaning. This method is inefficient, ineffective, labor-intensive, and involves high labor intensity and harsh working conditions for workers. Utility Model Content
[0003] The purpose of this invention is to solve the problem of inoculant recovery in the existing casting process of the Disha production line, and to provide an in-flow inoculant recovery system.
[0004] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a downstream inoculant recovery system, characterized in that: it includes a purging system and a screening system located downstream of the inoculant injection pipe. The purging system is located on one side of the mold and includes a purging nozzle and a swing mechanism. The purging nozzle forms a certain angle with the surface of the mold, and the blown air purifies the surface of the mold. The swing mechanism is connected to and controls the purging nozzle to swing left and right accordingly. The screening system is located on the other side of the mold, directly opposite the purging system, and includes a vibration mechanism and a discharge mechanism. The vibration mechanism includes a vibration motor and a vibrating screen connected thereto. The vibrating screen is connected to the discharge mechanism.
[0005] The swing mechanism includes a rack and a sector gear. The rack is driven by the piston rod of the oil cylinder to reciprocate linearly. The sector gear meshes with the rack and swings around the hanging shaft under the drive of the rack. The toothless side of the sector gear is connected to the blow nozzle.
[0006] The screening system also includes a support spring and legs connected to the bottom of the vibrating screen. The vibrating screen includes a vibrating screen frame and a screen mesh, which consists of two layers, with the upper screen mesh being 20-30 mesh.
[0007] The discharge mechanism includes discharge ports connected to the ends of the two layers of screens respectively.
[0008] The angle between the blower nozzle and the mold surface is 5°-10°, the lowest point is 150-250mm from the mold surface, and the distance from the center of the sprue is 200mm.
[0009] The mold is equipped with a camera probe for monitoring the amount and distribution of inoculant scattered on the mold, and the camera probe is connected to the control center.
[0010] This invention features a simple structure, high recycling efficiency, and ease of use. The actions of both the blowing and screening systems are controlled by the molding line's central system. Based on casting production process parameters and the condition of the inoculant scattered on the mold, the blowing time, air volume, and blowing frequency are automatically determined, ensuring all scattered inoculant is blown onto the vibrating screen for screening and recovery. This significantly reduces inoculant waste and labor costs in production, thereby lowering production costs. Attached Figure Description
[0011] Figure 1 The diagram shows the arrangement of the sand lines of this utility model;
[0012] Figure 2 for Figure 1 View from direction A;
[0013] Figure 3 This is a top view of the purging system structure of this utility model;
[0014] Figure 4 This is a diagram showing the relative positions of the blower nozzle and the mold.
[0015] In the diagram, 1. Mold; 2. Purge system; 2-1. Hydraulic cylinder; 2-2. Rack; 2-3. Sector gear; 2-4. Hanging shaft; 2-5. Purge nozzle; 2-6. Camera probe; 3. Inoculant injection pipe; 4. Molten iron pouring ladle; 5. Screening system; 5-1. Vibrating screen frame; 5-2. Screen; 5-3. Lower discharge port; 5-4. Upper discharge port; 5-5. Support spring; 5-6. Support leg; 5-7. Vibrating motor; α - Angle between the purging nozzle and the mold surface; H - Distance from the lowest point of the purging nozzle to the mold surface; L - Distance from the purging nozzle to the center of the sprue. Detailed Implementation
[0016] The present invention will now be described in detail with reference to the accompanying drawings and embodiments, but the present invention is not limited to the specific embodiments. Example
[0017] like Figure 1The inoculant recovery system shown includes a purging system and a screening system located downstream of the inoculant injection pipe 3. The purging system is located on one side of the mold 1 and includes a purging nozzle 2-5 and a swing mechanism. The purging nozzle 2-5 forms a certain angle α with the surface of the mold 1, and the blown air purifies the surface of the mold 1. The swing mechanism is connected to and controls the purging nozzle 2-5 to swing left and right accordingly. The screening system is located on the other side of the mold 1, directly opposite the purging system, and includes a vibration mechanism and a discharge mechanism. The vibration mechanism includes a vibration motor 5-7 and a vibrating screen connected to it. The vibrating screen is connected to the discharge mechanism.
[0018] The swing mechanism includes a rack 2-2 and a sector gear 2-3. The rack 2-2 is driven by the piston rod of the oil cylinder 2-1 to reciprocate linearly. The sector gear 2-3 meshes with the rack 2-2 and swings around the hanging shaft 2-4 under the drive of the rack 2-2. The toothless side of the sector gear 2-3 is connected to the blow nozzle 2-5.
[0019] The screening system also includes a support spring 5-5 and a support leg 5-6 connected to the bottom of the vibrating screen. The vibrating screen includes a vibrating screen frame 5-1 and a screen 5-2. The screen 5-2 has two layers, with the upper screen having a mesh size of 20. Iron particles larger than the mesh size remain in the upper layer, while inoculant particles smaller than the mesh size can pass through and enter the lower layer.
[0020] The discharge mechanism includes discharge ports connected to the ends of the two layers of screens respectively.
[0021] The angle α between the blower nozzle 2-5 and the surface of mold 1 is 10°, the lowest point is 200mm away from the surface of mold 1 (H), and the distance from the center of the sprue is 200mm.
[0022] The mold 1 is equipped with a camera probe 2-6 for monitoring the amount and distribution of inoculant scattered on the mold. The camera probe 2-6 is connected to a control center for adjusting its wind speed and direction.
[0023] When this invention is in operation, the main shaft of the vibrating motor 5-7 is at a 30° angle to the horizontal. During operation, the vibrating screen tilts forward under the drive of the vibrating motor 5-7, and the material on the vibrating screen moves forward. The camera probe 2-6 detects the quantity and distribution of the inoculant scattered on the mold 1. Based on the received information, the control center instructs the movable blowing nozzle 2-5 to blow the surface of the mold 1 at the corresponding wind speed and direction, blowing the inoculant scattered on the surface of the mold 1 and the iron pellets generated by the splashing of molten iron during pouring away from the mold 1 and into the vibrating screen. The vibrating screen sieves the collected inoculant and iron pellets. The smaller particles of inoculant pass through the screen and fall into the lower layer, flowing out from the lower discharge port 5-3 into the recovery box for use in the melting of molten iron and silicon enrichment. The larger particles of iron pellets remain on the upper screen and enter the iron pellet box from the upper discharge port 5-4. Example
[0024] The structure and connection relationship of each part of the inoculant recovery system described in this embodiment are the same as those in Embodiment 1. The difference is that the upper screen is 25 mesh; the angle α between the purge nozzle 2-5 and the surface of the mold 1 is 5°, and the distance H from the lowest point to the surface of the mold 1 is 150mm. Example
[0025] The structure and connection relationship of each part of the inoculant recovery system described in this embodiment are the same as those in Embodiment 1. The difference is that the upper screen is 30 mesh; the angle α between the purge nozzle 2-5 and the surface of the mold 1 is 15°; and the distance H from the lowest point to the surface of the mold 1 is 250mm.
[0026] The above description, in conjunction with preferred technical solutions, provides a further detailed explanation of this utility model. It should not be construed that the specific implementation of the utility model is limited to these descriptions. For those skilled in the art, simple deductions and substitutions can be made without departing from the concept of this utility model, and all such modifications and substitutions should be considered within the scope of protection of this utility model.
Claims
1. A flow-through inoculant recovery system, characterized in that: The system includes a purging system and a screening system located downstream of the inoculant injection pipe. The purging system is located on one side of the mold and includes a purging nozzle and a swing mechanism. The purging nozzle is at a certain angle to the surface of the mold, and the blown air purifies the surface of the mold. The swing mechanism is connected to and controls the purging nozzle to swing left and right. The screening system is located on the other side of the mold, directly opposite the purging system, and includes a vibration mechanism and a discharge mechanism. The vibration mechanism includes a vibration motor and a vibrating screen connected to it. The vibrating screen is connected to the discharge mechanism.
2. The in-flow inoculant recovery system according to claim 1, characterized in that: The swing mechanism includes a rack and a sector gear. The rack is driven by the piston rod of the oil cylinder to reciprocate linearly. The sector gear meshes with the rack and swings around the hanging shaft under the drive of the rack. The toothless side of the sector gear is connected to the blow nozzle.
3. The in-flow inoculant recovery system according to claim 1, characterized in that: The screening system also includes a support spring and support legs connected to the bottom of the vibrating screen. The vibrating screen includes a vibrating screen frame and a screen mesh, which consists of two layers, with the upper screen mesh being 20-30 mesh.
4. The in-flow inoculant recovery system according to claim 3, characterized in that: The discharge mechanism includes discharge ports connected to the ends of the two layers of screens respectively.
5. The in-flow inoculant recovery system according to claim 1, characterized in that: The angle between the blower nozzle and the mold surface is 5°-15°, the lowest point is 150-250mm from the mold surface, and the distance from the center of the sprue is 200mm.
6. The in-flow inoculant recovery system according to any one of claims 1 to 5, characterized in that: The mold is equipped with a camera probe for monitoring the amount and distribution of inoculant scattered on the mold, and the camera probe is connected to the control center.