A blast mill for producing titanium alloy products

Abstract

The utility model relates to the technical field of air sweep mill, and disclose a kind of air sweep mill for titanium alloy product production, including cylinder, the left end of the cylinder is provided with feed inlet, the feed inlet is connected and is fixedly connected with change box, the inside of the change box is slidably installed with shell one near upper side, the inside middle part of shell one is fixedly installed with bearing, the inner ring wall of bearing is fixedly connected with spiral guide vane, the lower end of shell one is fixedly connected with shell two, the middle part of shell two is provided with wind passage, the air hole of evenly distributed is provided on shell two at wind passage place. The device is driven spiral guide vane rotation by high-pressure airflow to make material enter spiral motion state earlier, improve the distribution uniformity of material in cylinder, refrigeration is carried out by refrigeration piece, cold air is accurately brought into cylinder by airflow, oxidation and hydrogen absorption embrittlement phenomenon of material are prevented, and the stability of product quality is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of air-swept milling technology, and in particular to an air-swept milling device for the production of titanium alloy products. Background Technology

[0002] In the production of titanium alloy products, air-swept mills are widely used as important grinding equipment for grinding coarse titanium alloy particles. Traditional air-swept mills often use a simple direct airflow method to feed material into the cylinder. In this method, the high-speed airflow carries material directly through the feed inlet, causing some material to enter the cylinder without being fully dispersed. This results in uneven axial distribution of the material within the cylinder, affecting the sufficient contact between the material and the grinding media, reducing grinding efficiency, and hindering product quality improvement.

[0003] Meanwhile, during the grinding process of titanium alloy materials, a large amount of heat is generated due to friction and collision between the material and the grinding media, causing the material temperature to rise. High-temperature environments are extremely detrimental to titanium alloys, easily leading to oxidation and hydrogen embrittlement, severely affecting the performance and quality of titanium alloy products. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an air-swept mill for the production of titanium alloy products, which solves some of the problems mentioned in the background art.

[0005] This utility model provides the following technical solution: a pneumatic mill for producing titanium alloy products, comprising a cylinder, a feed inlet at the left end of the cylinder, a conversion box connected and fixedly connected to the feed inlet, a housing 1 slidably installed inside the conversion box near the upper side, a bearing fixedly installed in the middle of the housing 1, a spiral guide plate fixedly connected to the inner ring wall of the bearing, the outer edge of the spiral guide plate fitting with the inner wall of the feed inlet, a housing 2 fixedly connected to the lower end of the housing 1, an air passage provided in the middle of the housing 2, the diameter of the air passage being the same as the inner diameter of the feed inlet, a cavity provided inside the housing 2, and evenly distributed ventilation holes provided on the housing 2 at the air passage, a cooling port connected and fixedly connected to the middle of the right end of the housing 2.

[0006] Furthermore, a cooling fan is fixedly installed inside the cooling port near the outer side. A heat sink is fixedly connected to the left end of the cooling fan. A cooling plate is fixedly installed in the middle of the left end of the heat sink, with the cold end face of the cooling plate facing the inside of the cavity.

[0007] Furthermore, an electric push rod is fixedly installed at the middle of the upper end of the conversion box, and the lower telescopic end of the electric push rod passes through the conversion box and is fixedly connected to the housing.

[0008] Furthermore, a sliding groove is provided at the middle right end of the conversion box near the lower side, and the cooling port passes through and is slidably connected inside the sliding groove.

[0009] Furthermore, the left and right ends of the housing are fixedly connected with abutments near the top and bottom, and the left and right inner walls of the conversion box are fixedly connected with limit blocks near the top and middle, and the abutments and limit blocks are compatible with each other.

[0010] The advantages of this utility model are as follows: 1. High-pressure airflow drives the spiral guide plate to rotate, causing the airflow and material to form a spiral mixed flow. This prompts the material to enter the spiral motion state earlier. Under the action of inertial force, the material enters the cylinder in a spiral trajectory, which effectively improves the uniformity of material distribution in the cylinder. This avoids the problem of high-speed airflow carrying material directly through the feed inlet, resulting in some material not being fully dispersed before entering the cylinder. This allows the material to contact the grinding media more fully and evenly, improving grinding efficiency and ensuring the stability of product quality.

[0011] 2. By incorporating cooling plates, heat sinks, a cooling fan, a cavity, air ducts, and vents, a highly efficient cooling system is formed. The cooling plates rapidly cool the cold end, while the heat sinks and cooling fan quickly expel heat from the hot end, effectively and efficiently reducing the temperature inside the cavity. When the high-pressure airflow passes through the air duct, it can precisely introduce cold air into the cylinder through the vents. This structural design not only avoids the airflow turbulence that may result from directly cooling the cylinder, but also effectively prevents oxidation and hydrogen embrittlement of titanium alloy materials during grinding due to temperature increases, without affecting the high-pressure airflow-assisted pulverization effect. This ensures the physical and chemical properties of the titanium alloy products and improves the overall quality of the products. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a partial cross-sectional view of the present invention. Figure 4 For the present utility model Figure 3 A magnified structural diagram of point A in the middle.

[0013] In the diagram: 1. Cylinder; 2. Feed inlet; 3. Transformer box; 4. Shell 1; 5. Bearing; 6. Spiral guide plate; 7. Shell 2; 8. Air duct; 9. Cavity; 10. Vent hole; 11. Cooling port; 12. Cooling fan; 13. Heat sink; 14. Cooling plate; 15. Electric push rod; 16. Slide groove; 17. Abutment block; 18. Limiting block. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-3 A pneumatic mill for producing titanium alloy products includes a cylinder 1. A feed inlet 2 is located at the left end of the cylinder 1. A conversion box 3 is connected and fixedly connected to the feed inlet 2. A housing 4 is slidably installed inside the conversion box 3 near its upper side. A bearing 5 is fixedly installed in the middle of the housing 4. A spiral guide plate 6 is fixedly connected to the inner wall of the bearing 5. The outer edge of the spiral guide plate 6 fits into the inner wall of the feed inlet 2. An electric push rod 15 is fixedly installed in the middle of the upper end of the conversion box 3. The lower telescopic end of the electric push rod 15 passes through the conversion box 3 and is fixedly connected to the housing 4. The pneumatic mill blows high-pressure airflow into the feed inlet 2 via a pneumatic conveyor, and the high-pressure airflow transports coarse titanium alloy particles into the cylinder 1. In use, the electric push rod 15 is first opened to allow its telescopic end to drive the housing 4. Moving to the feed inlet 2, when the high-pressure airflow passes the spiral guide plate 6, the design of the bearing 5 allows the high-pressure airflow to drive the spiral guide plate 6 and the inner ring of the bearing 5 to rotate synchronously. This rotation of the spiral guide plate 6 guides the airflow and material to form a spiral mixed flow, and the material enters the spiral motion state earlier under the drive of the spiral guide plate 6. Under the action of inertial force, the material enters the cylinder 1 through the inner wall of the feed inlet 2 in a spiral trajectory, thereby improving the uniformity of material distribution in the cylinder 1. This avoids the high-speed airflow carrying material directly through the feed inlet 2, which would cause some material to enter the cylinder 1 without being fully dispersed. This allows the material to contact the grinding media more fully and evenly, improving grinding efficiency and product quality. At the same time, this structure is driven by high-pressure airflow, eliminating the need for an additional drive mechanism.

[0016] Please see Figures 1-4A second shell 7 is fixedly connected to the lower end of the first shell 4. An air passage 8 is provided in the middle of the second shell 7, with the diameter of the passage 8 being the same as the inner diameter of the feed inlet 2. A cavity 9 is provided inside the second shell 7. Evenly distributed ventilation holes 10 are provided on the second shell 7 at the air passage 8. A cooling port 11 is connected and fixedly connected to the middle of the right end of the second shell 7. A cooling fan 12 is fixedly installed inside the cooling port 11 near the outer side. A heat sink 13 is fixedly connected to the left end of the cooling fan 12. A cooling plate 14 is fixedly installed in the middle of the left end of the heat sink 13, with the cold end of the cooling plate 14 facing the inside of the cavity 9. When material is fed into the cylinder 1 for grinding, the extension end of the electric push rod 15 is opened, causing the first shell 4 to move. The material rises, thereby moving the housing 7 to the feed inlet 2 through the rising housing 4. The design of the air passage 8 avoids affecting the high-pressure airflow, ensuring the effect of airflow-assisted crushing, and carrying the ground titanium alloy fine powder out of the cylinder 1. At the same time, by supplying power to the cooling plate 14 and the cooling fan 12, the cold end of the cooling plate 14 can be cooled, and the heat generated by the hot end of the cooling plate 14 can be discharged through the heat sink 13 and the cooling fan 12, ensuring the rationality of the structure, thereby forcibly and efficiently reducing the temperature in the cavity 9. As a result, when the high-pressure airflow passes through the air passage 8, it can bring cold air into the cylinder 1 through the vent 10, preventing the titanium alloy material from oxidizing and embrittled by hydrogen absorption, and ensuring the product quality of titanium alloy products.

[0017] Please see Figures 1-3 A sliding groove 16 is provided at the middle right end of the conversion box 3 near the lower side. The cooling port 11 passes through and is slidably connected inside the sliding groove 16. When the housing 2 7 is raised and lowered, the cooling port 11 will slide synchronously inside the sliding groove 16 to ensure the rationality of the structure. The left and right ends of the housing 1 4 are fixedly connected with abutment blocks 17 near the upper and lower sides. The left and right inner walls of the conversion box 3 are fixedly connected with limit blocks 18 near the upper side and the middle. The abutment blocks 17 and the limit blocks 18 are compatible with each other. Through the limiting effect of the limit blocks 18 and the abutment blocks 17, the accuracy of the device when adjusting the position of the housing 1 4 and the housing 2 7 can be improved, and the misalignment with the feed port 2 can be avoided.

[0018] Working Principle: The air-swept mill uses a pneumatic conveyor to blow high-pressure airflow into the feed inlet 2, which then transports coarse titanium alloy particles into the cylinder 1. In operation, the electric push rod 15 is activated, causing its extension end to move the housing 4 to the feed inlet 2. As the high-pressure airflow passes the spiral guide plate 6, the bearing 5's design allows the high-pressure airflow to drive the spiral guide plate 6 and the inner ring of the bearing 5 to rotate synchronously. This rotation of the spiral guide plate 6 guides the airflow and material to form a spiral mixture. Driven by the spiral guide plate 6, the material enters a spiral motion state earlier and, under the influence of inertia, falls through the inner wall of the feed inlet 2 in a spiral trajectory into the cylinder 1. This improves the uniformity of material distribution within the cylinder 1 and prevents high-speed airflow from carrying material directly through the feed inlet 2, which could result in some material entering the cylinder 1 without sufficient dispersion. This ensures that the material interacts more fully and evenly with the grinding media. This design improves grinding efficiency and product quality through contact. The structure utilizes high-pressure airflow, eliminating the need for an additional drive mechanism. Furthermore, when material is fed into the cylinder 1 for grinding, opening the electric push rod 15 causes its telescopic end to rise, lifting the housing 4. This rise then moves the housing 7 to the feed inlet 2. The design of the air duct 8 avoids affecting the high-pressure airflow, ensuring the airflow-assisted grinding effect and carrying the ground titanium alloy powder out of the cylinder 1. Simultaneously, powering the cooling plate 14 and cooling fan 12 cools the cold end of the cooling plate 14, while the heat generated by the hot end of the cooling plate 14 is dissipated through the heat sink 13 and cooling fan 12, ensuring structural rationality and forcibly and efficiently reducing the temperature inside the cavity 9. This allows the high-pressure airflow to bring cold air into the cylinder 1 through the vent 10 when passing through the air duct 8, preventing oxidation and hydrogen embrittlement of the titanium alloy material.

Claims

1. A pneumatic mill for manufacturing titanium alloy products, comprising a cylindrical body (1), characterized in that: The left end of the cylinder (1) is provided with a feed inlet (2), and a conversion box (3) is connected and fixedly connected to the feed inlet (2). Inside the conversion box (3), a housing (4) is slidably installed near the upper side. A bearing (5) is fixedly installed in the middle of the inside of the housing (4). A spiral guide plate (6) is fixedly connected to the inner ring wall of the bearing (5). The outer edge of the spiral guide plate (6) fits with the inner wall of the feed inlet (2). The lower end of the housing (4) is fixedly connected to a housing (7). An air passage (8) is provided in the middle of the housing (7). The diameter of the air passage (8) is the same as the inner diameter of the feed inlet (2). A cavity (9) is provided inside the housing (7). A uniformly distributed ventilation hole (10) is provided on the housing (7) at the air passage (8). A cooling port (11) is connected and fixedly connected to the middle of the right end of the housing (7).

2. The air-swept mill for manufacturing titanium alloy products according to claim 1, characterized in that: A cooling fan (12) is fixedly installed inside the cooling port (11) near the outside. A heat sink (13) is fixedly connected to the left end of the cooling fan (12). A cooling plate (14) is fixedly installed at the middle of the left end of the heat sink (13). The cold end face of the cooling plate (14) faces the inside of the cavity (9).

3. The air-swept mill for manufacturing titanium alloy products according to claim 1, characterized in that: An electric push rod (15) is fixedly installed at the middle of the upper end of the conversion box (3), and the lower telescopic end of the electric push rod (15) passes through the conversion box (3) and is fixedly connected to the housing (4).

4. The air-swept mill for manufacturing titanium alloy products according to claim 1, characterized in that: The right end of the converter box (3) has a groove (16) located near the bottom, and the cooling port (11) is slidably connected inside the groove (16).

5. The air-swept mill for manufacturing titanium alloy products according to claim 1, characterized in that: The left and right ends of the housing (4) are fixedly connected with abutment blocks (17) near the upper and lower sides. The left and right inner walls of the transformation box (3) are fixedly connected with limit blocks (18) near the upper side and the middle. The abutment blocks (17) and limit blocks (18) are compatible with each other.

Images