Tundish material drying apparatus
By installing a stirring rod in the casting material drying equipment and making the drying cylinder reciprocate, combined with hot air drying, the problem of incomplete drying of casting material is solved, the quality of castings is improved and the production cost is reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HE BEI HONGFENG REFRACTORIES CO OF LTD LIABILITY
- Filing Date
- 2025-06-03
- Publication Date
- 2026-06-23
AI Technical Summary
Existing casting material drying equipment suffers from incomplete drying, leading to unstable casting quality and defects such as porosity and sand holes. Furthermore, damp casting material affects refractoriness and strength, increasing production costs.
A casting die drying device is adopted, which sets multiple stirring rods inside the drying cylinder and uses a drive component to make the drying cylinder reciprocate. Combined with hot air drying and stirring, it ensures that the casting die material is in full contact with the hot air and achieves uniform drying.
It improves the drying effect of the casting material, reduces casting defects, improves casting quality, and reduces production costs and equipment maintenance time.
Smart Images

Figure CN224398204U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of drying equipment technology, and in particular to a drying equipment for casting die materials. Background Technology
[0002] In the casting production process, the dryness of the casting nozzle material plays a decisive role in the quality of the castings. As a crucial channel material for the molten metal flowing into the mold cavity, if the moisture content of the casting nozzle is too high, the water will rapidly vaporize under the high-temperature molten metal, generating a large amount of steam. This can easily lead to defects such as porosity and sand holes in the castings, and in severe cases, even cause safety accidents such as flameout and splashing. Furthermore, damp casting nozzle material will also affect its refractoriness and strength, causing premature damage to the nozzle during use, increasing production costs and equipment downtime for maintenance. Therefore, efficient and reliable casting nozzle material drying equipment is core equipment for ensuring stable casting processes and improving casting quality.
[0003] However, existing casting material drying equipment generally suffers from incomplete drying, making it difficult to meet the needs of modern casting production. Traditional drying equipment mostly adopts static drying methods, such as box-type drying furnaces, where materials are piled up inside the equipment, resulting in insufficient contact between the internal materials and hot air. For example, in a box-type drying furnace, when the material thickness exceeds 20cm, the moisture in the central area is difficult to evaporate effectively, often resulting in a "half-cooked" phenomenon where the outer layer is dry and the inner layer is damp. Utility Model Content
[0004] To address the technical problem of incomplete drying in existing technologies, this utility model provides a casting die drying device.
[0005] The technical solution adopted by this utility model is: a casting material drying device, including a drying cylinder, a plurality of stirring rods fixedly connected inside the drying cylinder, an inlet and outlet on the outside of the drying cylinder, a sealing cover at the corresponding inlet and outlet positions on the outside of the drying cylinder, a base and a pedestal at both ends of the drying cylinder, a hydraulic cylinder hinged on the base, a mounting seat hinged to the output end of the hydraulic cylinder, a rotating seat rotatably connected to the pedestal, a first rotating tube rotatably connected to the mounting seat, one end of the first rotating tube extending into the drying cylinder, a second rotating tube rotatably connected to the rotating seat, one end of the second rotating tube extending into the drying cylinder, an air inlet pipe fixedly connected to the outside of the first rotating tube, an air outlet pipe fixedly connected to the outside of the second rotating tube, and a drive assembly for driving the drying cylinder to reciprocate.
[0006] In one embodiment, the drive assembly includes a gear and a rack, the gear being fixedly connected to a first rotating tube, a cylinder being fixedly connected to the mounting base, the output end of the cylinder being fixedly connected to the rack, and the gear and rack meshing with each other.
[0007] In one embodiment, a guide rod is fixedly connected to the outside of the rack, and a guide seat is fixedly connected to the mounting base, with the guide rod passing through the guide seat.
[0008] In one embodiment, a support base is fixedly connected to the mounting base, and the drying cylinder is rotatably connected to the support base.
[0009] In one embodiment, a support plate is fixedly connected to the outside of the rotating seat, and the support plate abuts against the outside of the drying cylinder.
[0010] In one embodiment, an electric push rod is fixedly connected to the outside of the drying cylinder, and the output end of the electric push rod is fixedly connected to the sealing cover.
[0011] In one embodiment, a transparent observation window is fixedly connected to the outside of the drying cylinder.
[0012] The beneficial effects of this utility model are as follows: Compared with the prior art, in this utility model, the drying cylinder is driven to rotate back and forth by the driving component, and the hot air entering the drying cylinder can dry the casting material. Moreover, the casting material can be fully stirred and turned over with the stirring rod in the drying cylinder, thereby improving the drying effect. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the base and hydraulic cylinder in this utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the drying cylinder in this utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the stirring rod inside the drying cylinder in this utility model.
[0017] The following are marked in the diagram: 1. Drying cylinder; 2. Inlet and outlet; 3. Stirring rod; 4. Sealing cover; 5. Electric push rod; 6. Base; 7. Hydraulic cylinder; 8. Pneumatic cylinder; 9. Rack; 10. Guide rod; 11. Guide seat; 12. First rotating tube; 13. Air inlet pipe; 14. Gear; 15. Support seat; 16. Base; 17. Rotating seat; 18. Support plate; 19. Second rotating tube; 20. Air outlet pipe; 21. Mounting seat. Detailed Implementation
[0018] In the description of this utility model, it should be noted that the terms "front", "up", "down", "left", "right", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] The following is in conjunction with the appendix Figures 1-4 The present invention will be further described below.
[0021] To address the problems existing in the background technology, this application proposes the following technical solution: a casting material drying device, including a drying cylinder 1, with multiple sets of stirring rods 3 fixedly connected inside the drying cylinder 1, an inlet / outlet 2 on the outside of the drying cylinder 1, an electric push rod 5 fixedly connected to the outside of the drying cylinder 1, the output end of the electric push rod 5 fixedly connected to a sealing cover 4, a transparent observation window fixedly connected to the outside of the drying cylinder 1, a sealing cover 4 at the corresponding position of the inlet / outlet 2 on the outside of the drying cylinder 1, a base 6 and a base 16 at both ends of the drying cylinder 1 respectively, a hydraulic cylinder 7 hinged to the base 6, a mounting seat 21 hinged to the output end of the hydraulic cylinder 7, a support seat 15 fixedly connected to the mounting seat 21, the drying cylinder 1 rotatably connected to the support seat 15, and the base 16 rotating... A rotating base 17 is rotatably connected to the drying cylinder 1, and a support plate 18 is fixedly connected to the outside of the rotating base 17. The support plate 18 abuts against the outside of the drying cylinder 1. A first rotating pipe 12 is rotatably connected to the mounting base 21, with one end of the first rotating pipe 12 extending into the drying cylinder 1. A second rotating pipe 19 is rotatably connected to the rotating base 17, with one end of the second rotating pipe 19 extending into the drying cylinder 1. An air inlet pipe 13 is fixedly connected to the outside of the first rotating pipe 12, and an air outlet pipe 20 is fixedly connected to the outside of the second rotating pipe 19. The mounting base 21 is also equipped with a drive assembly for driving the drying cylinder 1 to reciprocate. In the casting industry, the moisture content of the casting material directly affects the quality of the castings. Traditional drying equipment often results in poor drying effects due to insufficient mixing and uneven hot air distribution. The drying cylinder 1 is made of 316L stainless steel with a mirror-polished inner wall, which has strong corrosion resistance and is non-stick. Multiple sets of stirring rods 3 form a three-dimensional stirring effect when the drying cylinder 1 rotates, which improves the material turning efficiency compared to traditional linear stirring. The transparent observation window is made of tempered borosilicate glass, allowing operators to observe the material drying status in real time and adjust process parameters promptly. The hinged design of the hydraulic cylinder 7 and mounting base 21 allows the drying cylinder 1 to tilt from 0-45°. Combined with the large-diameter design of the inlet and outlet 2 (up to 400mm), the unloading speed is increased, and unloading is thorough and residue-free. Both the first rotating pipe 12 and the second rotating pipe 19 adopt a rotary sealing structure with built-in PTFE sealing rings, ensuring that the hot air system and the exhaust system remain sealed during the reciprocating rotation of the drying cylinder 1, preventing heat loss.
[0022] In this embodiment, the drive assembly includes a gear 14 and a rack 9. The gear 14 is fixedly connected to the first rotating tube 12. A cylinder 8 is fixedly connected to the mounting base 21, and the output end of the cylinder 8 is fixedly connected to the rack 9. The gear 14 and the rack 9 mesh with each other. A guide rod 10 is fixedly connected to the outside of the rack 9, and a guide seat 11 is fixedly connected to the mounting base 21. The guide rod 10 passes through the guide seat 11. The innovative design of the drive assembly enables the controllable reciprocating rotation of the drying cylinder 1, providing a key guarantee for the uniform drying of materials. The gear 14 is made of 40Cr alloy steel. The module of the rack 9 and the gear 14 is 5, and the pressure angle is 20°. The cylinder 8 is a double-acting type with a working pressure range of 0.4-0.8MPa. By adjusting the air pressure, the movement speed of the rack 9 can be precisely controlled, thereby achieving a variable speed rotation of the drying cylinder from 10-60° / s. The clearance between the guide rod 10 and the guide seat 11 is controlled within ±0.05mm to ensure the linear motion accuracy of the rack 9 and prevent wear of the gear 14 and rack 9 caused by lateral force.
[0023] The usage method of this embodiment is as follows:
[0024] Start the electric push rod 5 to push the sealing cover 4 to slide, so that the sealing cover 4 no longer blocks the inlet and outlet 2, pour the casting material into the drying cylinder 1, and start the electric push rod 5 again to block the inlet and outlet 2 through the sealing cover 4;
[0025] Subsequently, hot air is delivered to the air inlet pipe by an external hot air blower, and then enters the drying cylinder 1 through the first rotating pipe 12 for drying. The air outlet pipe is connected to an external suction fan, which extracts the humid air.
[0026] At the same time, the starting cylinder 8 drives the rack 9 to reciprocate, the rack 9 drives the gear 14 to reciprocate, and the gear 14 drives the drying cylinder 1 to reciprocate, so that the casting material and the stirring rod 3 can fully react and stir in the tower, accelerating the drying process;
[0027] After drying is completed, the hydraulic cylinder 7 is activated to push the mounting base 21 upward. The drying cylinder 1 rotates upward via the rotating base 17, and then the sealing plate is opened. The dried casting material can then be discharged through the inlet and outlet 2.
[0028] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.
[0029] Although embodiments of the present invention have been shown and described, the scope of the present invention will be defined by the appended claims and their equivalents for those skilled in the art.
Claims
1. A casting material drying equipment, characterized in that, The device includes a drying cylinder (1), inside which multiple sets of stirring rods (3) are fixedly connected. The drying cylinder (1) has an inlet / outlet (2) on its exterior, and a sealing cap (4) is provided at the corresponding inlet / outlet (2) positions on the exterior of the drying cylinder (1). A base (6) and a base (16) are respectively provided at both ends of the drying cylinder (1). A hydraulic cylinder (7) is hinged to the base (6), and a mounting seat (21) is hinged to the output end of the hydraulic cylinder (7). A rotating seat (17) is rotatably connected to the base (16). A first rotating tube (12) is rotatably connected to the mounting base (21), one end of which extends into the drying cylinder (1). A second rotating tube (19) is rotatably connected to the rotating base (17), one end of which extends into the drying cylinder (1). An air inlet pipe (13) is fixedly connected to the outside of the first rotating tube (12), and an air outlet pipe (20) is fixedly connected to the outside of the second rotating tube (19). The mounting base (21) is also provided with a drive assembly for driving the drying cylinder (1) to reciprocate.
2. The casting material drying equipment according to claim 1, characterized in that, The drive assembly includes a gear (14) and a rack (9). The gear (14) is fixedly connected to the first rotating tube (12). A cylinder (8) is fixedly connected to the mounting base (21). The output end of the cylinder (8) is fixedly connected to the rack (9). The gear (14) and the rack (9) mesh with each other.
3. The casting material drying equipment according to claim 2, characterized in that, A guide rod (10) is fixedly connected to the outside of the rack (9), and a guide seat (11) is fixedly connected to the mounting base (21). The guide rod (10) passes through the guide seat (11).
4. The casting material drying equipment according to claim 3, characterized in that, A support base (15) is fixedly connected to the mounting base (21), and the drying cylinder (1) is rotatably connected to the support base (15).
5. The casting die drying equipment according to claim 1, characterized in that, A support plate (18) is fixedly connected to the outside of the rotating seat (17), and the support plate (18) abuts against the outside of the drying cylinder (1).
6. The casting die drying equipment according to claim 1, characterized in that, An electric push rod (5) is fixedly connected to the outside of the drying cylinder (1), and the output end of the electric push rod (5) is fixedly connected to the sealing cover (4).
7. The casting die drying equipment according to claim 1, characterized in that, A transparent observation window is fixedly connected to the outside of the drying cylinder (1).