A fully automatic continuous vacuum vibration casting forming device
The fully automatic continuous vacuum vibration casting molding device utilizes multiple valves to achieve continuous operation of materials and vacuum, solving the problems of uneven stress on the edges and corners of refractory bricks and low production efficiency, and realizing uniform molding and efficient production of large refractory bricks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-21
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, uneven stress at the edges and corners during the refractory brick pressing process leads to differences in material properties, and vacuum casting molding suffers from poor continuity and low production efficiency.
The fully automatic continuous vacuum vibration casting molding device, which is controlled by multiple valves, achieves continuous material feeding and continuous vacuum extraction by alternating opening and closing of programmable valves, thus avoiding intermittent operation.
It has enabled uniform molding and efficient production of large refractory bricks, increasing production efficiency by more than 50% and reducing production costs and equipment complexity.
Smart Images
Figure CN224310886U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of refractory material technology, and specifically relates to a fully automatic continuous vacuum vibration casting molding device. Background Technology
[0002] When using a press to press refractory bricks, uneven stress distribution occurs at the edges and corners compared to the center. Die friction results in lower stress at the edges and corners during pressing, leading to lower bulk density and strength at these locations. During service, molten slag erodes the edges and corners along the brickwork joints, causing them to peel off and develop raised, dome-shaped defects. To mitigate this issue, large-format machine-pressed bricks are often used to reduce the number of brickwork joints. However, this requires significantly higher pressure, which small-tonnage presses cannot meet. Conversely, excessive pressure from large-tonnage presses can cause particle breakage, affecting the brick's particle size distribution. Isostatic pressing solves these problems, ensuring even stress distribution across the brick. Furthermore, the larger size reduces the number of brickwork joints. Isostatic pressing can produce bricks up to 1200×600×500mm in size. 3 However, isostatic pressing equipment is expensive and the process is complex. It requires immersing the rubber mold in a liquid medium, resulting in high production costs. More importantly, solid isostatic pressing requires the raw material to have good flowability, and its particle size cannot be too large. Particles larger than 3mm will be restricted.
[0003] To address the limitations of the two forming processes mentioned above, vacuum casting to form preforms followed by prolonged high-temperature sintering can resolve material edge and corner performance differences and is not limited by raw material particle size. However, vacuum casting suffers from poor continuity due to the alternating processes of vacuuming and feeding, preventing the full realization of the high production efficiency of fully automated processes. Utility Model Content
[0004] This utility model relates to a fully automatic continuous vacuum vibration casting molding device, which aims to overcome the low efficiency problem caused by the need for intermittent vacuum evacuation after material feeding and casting. It adopts multi-valve control to resolve the contradiction between continuous material feeding and intermittent vacuum evacuation.
[0005] The fully automatic continuous vacuum vibration casting molding device includes a mixing mill 3, a homogenizing silo 5, a constant temperature and humidity control chamber 6, a discharge port 7, a vacuum pump 9, a mold 11, a conveyor belt 12, and a vibration casting platform 13. The mixing mill 3 and the homogenizing silo 5 are located in the constant temperature and humidity control chamber 6, and the discharge port 7 controls the pouring of the material in the homogenizing silo 5 into the mold 11.
[0006] A partition is axially arranged in the middle of the discharge port 7 to divide the space into two. A first programmable valve A and a third programmable valve C are respectively arranged at the upper and lower ends of one side of the discharge port 7, and a second programmable valve B and a fourth programmable valve D are respectively arranged at the upper and lower ends of the other side.
[0007] Furthermore, a temperature sensor 1, a humidity sensor 2, and a timer 4 are also installed in the constant temperature and humidity control room 6.
[0008] Furthermore, a vacuum sensor 8 is installed in the vacuum casting chamber, and a weight sensor 10 is installed on the conveyor belt 12.
[0009] The continuous feeding of materials is mainly regulated by the opening and closing of four programmable valves at the feeding port. The working principle is as follows: The feeding of materials is controlled by four programmable valves. The first programmable valve A and the third programmable valve C are installed in the same feeding pipe. When the first programmable valve A is open, the material in the homogenization silo is fed out, and the third programmable valve C is closed to ensure that the vacuum casting platform and the homogenization silo above it are isolated. The material is stored on the third programmable valve C. At the same time, the fourth programmable valve D of another feeding pipe is opened, and the material is fed into the mold of the vibrating casting platform. At this time, the second programmable valve B is closed to ensure that the vacuum casting platform and the homogenization silo above it are isolated, as shown in Figure 2(a). After the material piled above the fourth control valve D has been discharged, the fourth control valve D closes, the second control valve B opens, and the material flows in from the homogenization silo. At the same time, the first control valve A closes to ensure that the vacuum casting platform and the homogenization silo above it are isolated, and the third control valve C opens, allowing the material to be discharged into the vibratory casting platform mold, as shown in Figure 2(b). By repeatedly opening and closing the control valves in Figures 2(a) and 2(b), continuous material discharge without interrupted vacuuming can be achieved, enabling continuous and automated vacuum casting production.
[0010] The advantages of this utility model are: (1) Large and special-shaped dense casting bodies can be prepared by vacuum casting, and preforms can be obtained after heat treatment, which reduces the complex process and expensive equipment of machine pressing and the problem of limited molding; (2) By isolating the vacuum and non-vacuum spaces by programmable valves, the problem of the material feeding and vacuuming processes having to be carried out intermittently is solved, so that vacuum casting can be continuously produced, and automated continuous production can improve production efficiency by more than 50%. Attached Figure Description
[0011] Figure 1This is a schematic diagram of a fully automatic continuous vacuum vibration casting molding device. 1 is a temperature sensor, 2 is a humidity sensor, 3 is a mixing mill, 4 is a timer, 5 is a homogenization silo, 6 is a constant temperature and humidity control chamber, 7 is a discharge port, 8 is a vacuum sensor, 9 is a vacuum pump, 10 is a weight sensor, 11 is a mold, 12 is a conveyor belt, and 13 is a vibration casting platform.
[0012] Figures 2(a) and 2(b) are schematic diagrams of the alternating opening and closing of the programmable valves and the material feeding operation, respectively. In the diagrams, A represents the first programmable valve, B represents the second programmable valve, C represents the third programmable valve, D represents the fourth programmable valve, and 14 represents the material. Detailed Implementation
[0013] The fully automatic continuous vacuum vibration casting molding device includes a mixing mill 3, a homogenizing silo 5, a constant temperature and humidity control chamber 6, a discharge port 7, a vacuum pump 9, a mold 11, a conveyor belt 12, and a vibration casting platform 13. The mixing mill 3 and the homogenizing silo 5 are located within the constant temperature and humidity control chamber 6. The discharge port 7 controls the pouring of material from the homogenizing silo 5 into the mold 11. A partition is axially positioned in the middle of the discharge port 7, dividing the space in two. A first programmable valve A and a third programmable valve C are respectively installed at the upper and lower ends of one side of the discharge port 7, while a second programmable valve B and a fourth programmable valve D are respectively installed at the upper and lower ends of the other side. A temperature sensor 1, a humidity sensor 2, and a timer 4 are also installed in the constant temperature and humidity control chamber 6. A vacuum sensor 8 is installed in the vacuum casting chamber, and a weight sensor 10 is installed on the conveyor belt 12.
[0014] The continuous feeding of materials is mainly regulated by the opening and closing of four programmable valves at the feeding port. The working principle is as follows: The feeding of materials is controlled by four programmable valves. The first programmable valve A and the third programmable valve C are installed in the same feeding pipe. When the first programmable valve A is open, the material in the homogenization silo is fed out, and the third programmable valve C is closed to ensure that the vacuum casting platform and the homogenization silo above it are isolated. The material is stored on the third programmable valve C. At the same time, the fourth programmable valve D of another feeding pipe is opened, and the material is fed into the mold of the vibrating casting platform. At this time, the second programmable valve B is closed to ensure that the vacuum casting platform and the homogenization silo above it are isolated, as shown in Figure 2(a). After the material piled above the fourth control valve D has been discharged, the fourth control valve D closes, the second control valve B opens, and the material flows in from the homogenization silo. At the same time, the first control valve A closes to ensure that the vacuum casting platform and the homogenization silo above it are isolated, and the third control valve C opens, allowing the material to be discharged into the vibratory casting platform mold, as shown in Figure 2(b). By repeatedly opening and closing the control valves in Figures 2(a) and 2(b), continuous material discharge without interrupted vacuuming can be achieved, enabling continuous and automated vacuum casting production.
Claims
1. A fully automatic continuous vacuum vibration casting molding device, characterized in that, The device includes a mixing mill (3), a homogenizing silo (5), a constant temperature and humidity control chamber (6), a discharge port (7), a vacuum pump (9), a mold (11), a conveyor belt (12), and a vibrating casting platform (13). The mixing mill (3) and the homogenizing silo (5) are located in the constant temperature and humidity control chamber (6), and the discharge port (7) controls the material in the homogenizing silo (5) to be poured into the mold (11).
2. The apparatus according to claim 1, characterized in that, A partition is axially arranged in the middle of the discharge port (7) to divide the space into two. A first programmable valve (A) and a third programmable valve (C) are respectively arranged at the upper and lower ends of one side of the discharge port (7), and a second programmable valve (B) and a fourth programmable valve (D) are respectively arranged at the upper and lower ends of the other side.
3. The apparatus according to claim 1, characterized in that, Temperature sensor (1), humidity sensor (2), and timer (4) are also installed in the constant temperature and humidity control room (6).
4. The apparatus according to claim 1, characterized in that, A vacuum sensor (8) is installed in the vacuum casting chamber, and a weight sensor (10) is installed on the conveyor belt (12).