Silica sol shell-making air-drying device for valve casting

Abstract

The utility model relates to a silica sol shell-making air-drying device for valve casting, which comprises a base, an air-drying box, a constant-temperature fan and a ventilator, the air-drying box is arranged at the top of the base, a first fan is arranged at the top of the air-drying box, a second fan is arranged at the top of the base, an inner hole is arranged in the base, the top of the constant-temperature fan is fixedly connected with a first transmission pipe, and the top of the first transmission pipe is fixedly connected with a second transmission pipe. A silica sol shell is placed on the top of the placing table; leakage holes are formed in the placing table; moving wheels are arranged at the bottom of the placing table; an opening is formed in the left side of the air-drying box, a lifting door is arranged in the opening, and a drainage cover is fixedly connected to the right side of the air-drying box; the side edge of the drainage cover is fixedly connected with a second conveying pipe, the side edge of the ventilator is fixedly connected with a third conveying pipe, the tail end of the third conveying pipe is provided with a connector, the temperature of upper airflow and lower airflow of materials is the same, the air-drying process is uniform and effective, and the material air-drying effect is improved through air circulation in the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of valve casting, in particular to a silica sol shell making and air drying device for valve casting. Background Art

[0002] The medium-temperature wax silica sol shell making is a widely used process method in the valve casting industry. Silica sol is a mucous substance that usually appears colorless, translucent or milky white. Its essence is a colloidal solution. The silica sol shell making process does not involve chemical changes and has no irritating products. It is an environment-friendly binder, easy to use, with good slurry stability, simple equipment, and the shell has good high-temperature strength and high-temperature creep resistance, suitable for precision casting of high-melting-point alloys such as cast steel and superalloys. The utility model patent with the application number CN202023031293.X discloses a silica sol shell making and air drying system for valve casting, including a bracket. A driving motor is fixedly connected to the back of the bracket, and the output shaft of the driving motor is fixedly connected with a first conveying roller. The surface of the first conveying roller is drivingly connected with a conveyor belt. The surface of the first conveying roller is drivingly connected with a second conveying roller through the conveyor belt. A driving box is fixedly connected to the inside of the bracket. A rotating motor is fixedly connected to the left side of the driving box. The output shaft of the rotating motor is fixedly connected with a transmission mechanism. The axis of the transmission mechanism is fixedly connected with a rotating shaft. The surface of the rotating shaft is fixedly connected with fan blades. A protective box is fixedly connected to the top of the bracket. A blower is fixedly connected to the top of the protective box. The air inlet of the blower is communicated with an air cavity through a pipeline. The bottom of the air cavity is communicated with an air outlet pipe. A cooling water tank is arranged on the top of the protective box. A water pump is fixedly connected to the bottom of the inner cavity of the cooling water tank. The water outlet of the water pump is communicated with a cooling pipe. The surface of the cooling pipe is sequentially communicated with a three-way valve and a temperature sensor from left to right; the transmission mechanism includes a worm and a worm gear. The output shaft of the rotating motor is fixedly connected with the worm, and the surface of the worm is meshed with the worm gear; an air outlet hole is arranged on the top of the driving box, and a dust-proof net is arranged in the inner cavity of the air outlet hole; the air outlet of the blower is communicated with a filter box through a pipeline, and through holes are arranged on the surface of the conveyor belt; the top of the three-way valve is communicated with a return pipe, and the other end of the return pipe is communicated with the top of the left side of the cooling water tank. A condenser is arranged on the top of the cooling water tank. The output shaft of the rotating motor drives the rotating shaft to rotate through the worm and the worm gear, and the rotating shaft drives the air flow to flow through the fan blades to air-dry the lower surface of the material. At the same time, the blower blows downward through the air cavity and the air outlet pipe. However, the fan blades and the blower are separate wind systems, the air flow temperatures on the upper and lower surfaces of the material are different, and the temperature is uneven during the air drying process, affecting the quality of the material. Content of the Utility Model

[0003] The utility model aims to solve the above problems existing in the prior art, and provides a silica sol shell making and air drying device for valve casting, which can make the air flow temperatures on the upper and lower surfaces of the material the same, the air drying process is uniform and effective, and the air circulation inside the box improves the air drying effect of the material.

[0004] The technical solution adopted by the present utility model to solve its technical problems: This silica sol shell making and air drying device for valve casting includes a base, an air drying box, a constant temperature fan, and a ventilator. The air drying box is arranged on the top of the base. A first fan is installed on the top of the air drying box, and a second fan is installed on the top of the base. An inner hole is opened inside the base, and the second fan extends into the inner hole. The top of the constant temperature fan is fixedly connected with a first transmission pipe, and a C-shaped pipe is fixedly connected to the side of the first transmission pipe. The upper end of the C-shaped pipe is connected to the first fan, and the lower end of the C-shaped pipe passes through the inner hole and is connected to the second fan. A placement table is arranged inside the air drying box, and the silica sol shell mold is placed on the top of the placement table. There are multiple leakage holes inside the placement table. A moving wheel is arranged at the bottom of the placement table. A track groove is opened on the top of the base, and the moving wheel is inside the track groove. The track groove extends outside the air drying box. An opening is arranged on the left side of the air drying box, and a lifting door is arranged inside the opening. A drainage cover is fixedly connected to the right side of the air drying box, and a second transmission pipe is fixedly connected to the side of the drainage cover. The second transmission pipe is connected to the ventilator. A third transmission pipe is fixedly connected to the side of the ventilator, and a connector is arranged at the end of the third transmission pipe. The shell mold material is placed on the top of the placement table. The placement table is pushed towards the air drying box, and the placement table moves by using the moving wheels at the bottom. The placement table and the material reach the inside of the air drying box through the opening. The lifting door moves downward to close the opening. The constant temperature fan and the ventilator are turned on. The constant temperature fan conveys an air current with a set temperature, which reaches the first fan and the second fan respectively through the first transmission pipe and the C-shaped pipe. The first fan blows towards the top of the material, and the second fan blows towards the bottom of the placement table. The air current reaches the bottom of the material through multiple leakage holes. The top and bottom of the material are simultaneously subjected to the air drying effect at the same temperature. At the same time, the ventilator acts on the second transmission pipe and the drainage cover. The drainage cover and the second transmission pipe extract the air inside the air drying box. The air flows towards the drainage cover, passes through the drainage cover, the second transmission pipe, and the ventilator, and is discharged through the third transmission pipe. The air current temperatures at the top and bottom of the material are the same, and the air drying process is uniform and effective. The air circulation inside the box improves the air drying effect of the material.

[0005] For further improvement, the second fan is directly below the first fan, and the second fan is centered at the top of the inner hole. The corresponding positions of the second fan and the first fan have a high matching degree. The lower end of the C-shaped pipe passes through the central position inside the inner hole, providing enough space for the connection operation of the C-shaped pipe.

[0006] For further improvement, there are multiple moving wheels and two track grooves. The multiple moving wheels are arranged in two rows at the bottom of the placement table. The multiple moving wheels provide effective support for the placement table. The placement table moves stably by means of the multiple moving wheels and the two track grooves.

[0007] For further improvement, the connector is connected to an external pipe, and the external pipe extends outside the workshop. The air current is discharged from the workshop through the third transmission pipe and the external pipe, reducing the impact on the inside of the workshop.

[0008] For further improvement, a first movable hole is provided at the top of the air drying box, and a first movable groove is provided inside the opening. The first movable groove is communicated with the first movable hole, and the first movable groove extends to the top of the base. The lifting door is inside the first movable hole and the first movable groove. A support frame is fixedly connected to the top of the air drying box, and a cylinder is installed inside the support frame. The piston rod at the bottom of the cylinder is connected to the top of the lifting door. By controlling the contraction or extension operation of the cylinder, the lifting door is driven to move up and down in the first movable hole and the first movable groove, so that the opening is opened and closed. The operation is simple, saving time and labor, and improving the operation efficiency.

[0009] For further improvement, through holes are provided on the surface of the support frame. There are multiple through holes, and the multiple through holes reduce the overall weight of the support frame and avoid excessive load on the top of the air drying box.

[0010] For further improvement, an observation port is provided on the front side of the air drying box. A second movable hole is provided on the side of the observation port, and a second movable groove is provided inside the observation port. The second movable groove is communicated with the second movable hole. A sealing plate is inserted into the second movable hole. The sealing plate reaches inside the second movable groove and closes the observation port. A push block is fixedly connected to the surface of the sealing plate. Hold the push block and apply force to the left or right to drive the sealing plate to move to the left or right, so that the observation port is closed or opened. It is convenient to view the inside of the air drying box through the observation port, which helps to intuitively understand the material air drying process.

[0011] For further improvement, a placement groove is provided on the front side of the base, and an infrared thermometer gun is placed inside the placement groove. The infrared thermometer gun is safely stored inside the placement groove, and it is convenient and fast to obtain the infrared thermometer gun nearby for use.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. Place the shell material on the top of the placement table, push the placement table towards the air drying box, and the placement table moves by using the moving wheels at the bottom. The placement table and the material reach the inside of the air drying box through the opening. The lifting door moves downward to close the opening. Turn on the constant temperature fan and the ventilator. The constant temperature fan conveys the air flow with a set temperature, which reaches the first fan and the second fan through the first transmission pipe and the C-shaped pipe respectively. The first fan blows towards the top of the material, and the second fan blows towards the bottom of the placement table. The air flow reaches the bottom of the material through multiple leakage holes. The top and bottom of the material are simultaneously subjected to the air drying effect at the same temperature. At the same time, the ventilator acts on the second transmission pipe and the air guiding cover. The air guiding cover and the second transmission pipe extract the air inside the air drying box. The air flows towards the air guiding cover, passes through the air guiding cover, the second transmission pipe and the ventilator, and is discharged through the third transmission pipe. The air flow temperatures at the top and bottom of the material are the same, and the air drying process is uniform and effective. The air circulation inside the box improves the air drying effect of the material.

[0014] 2. By controlling the cylinder to contract or extend, the lifting door is driven to move up and down in the first moving hole and the first moving slot, and the opening is opened and closed. The operation is simple, saving time and manpower, improving the operation efficiency. Multiple through holes reduce the overall weight of the support frame, avoiding excessive load on the top of the air drying box.

[0015] 3. By holding the push block and applying force to the left or right, the sealing plate is driven to move to the left or right, and the observation port is closed or opened. It is convenient to view the inside of the air drying box through the observation port, which helps to intuitively understand the material air drying process. The infrared thermometer gun is safely stored inside the placement groove, and it is convenient and fast to obtain the infrared thermometer gun nearby for use. Description of the Drawings

[0016] Figure 1 is a schematic structural view of the present utility model;

[0017] Figure 2 is of the present utility model Figure 1 magnified view at A in;

[0018] Figure 3 is a front view of the structure of the present utility model;

[0019] Figure 4 is an internal display view of the structure of the present utility model;

[0020] Figure 5 is of the present utility model Figure 4 magnified view at B in;

[0021] Figure 6 is a right view of the structure of the present utility model;

[0022] Figure 7 is a left side display view of the structure of the present utility model;

[0023] Figure 8 is of the present utility model Figure 7 magnified view at C in.

[0024] Description of the Reference Numerals: 1. Base; 2. Air drying box; 3. Constant temperature fan; 4. Ventilator; 5. First fan; 6. Second fan; 7. Inner hole; 8. First transmission pipe; 9. C-shaped pipe; 10. Placement table; 11. Leak hole; 12. Movable wheel; 13. Track groove; 14. Opening; 15. Lifting door; 16. Drainage cover; 17. Second transmission pipe; 18. Third transmission pipe; 19. Connector; 20. First moving hole; 21. First moving slot; 22. Support frame; 23. Cylinder; 24. Through hole; 25. Observation port; 26. Second moving hole; 27. Second moving slot; 28. Sealing plate; 29. Push block; 30. Placement groove; 31. Infrared thermometer gun. Detailed Embodiment

[0025] The following further describes this embodiment in conjunction with the accompanying Figures 1-8 drawings:

[0026] As Figures 1-8 shown: In this embodiment, a silica sol shell making and air drying device for valve casting includes a base 1, an air drying box 2, a constant temperature fan 3 and a ventilator 4. The air drying box 2 is arranged on the top of the base 1. A first fan 5 is installed on the top of the air drying box 2. A second fan 6 is installed on the top of the base 1. An inner hole 7 is opened inside the base 1. The second fan 6 extends into the inner hole 7. The top of the constant temperature fan 3 is fixedly connected with a first transmission pipe 8. A C-shaped pipe 9 is fixedly connected to the side of the first transmission pipe 8. The upper end of the C-shaped pipe 9 is connected to the first fan 5. The lower end of the C-shaped pipe 9 passes through the inner hole 7 and is connected to the second fan 6. A placing table 10 is arranged inside the air drying box 2. The silica sol shell mold is placed on the top of the placing table 10. A leakage hole 11 is arranged inside the placing table 10. There are multiple leakage holes 11. A moving wheel 12 is arranged at the bottom of the placing table 10. A track groove 13 is opened on the top of the base 1. The moving wheel 12 is inside the track groove 13. The track groove 13 extends outside the air drying box 2. An opening 14 is arranged on the left side of the air drying box 2. A lifting door 15 is arranged inside the opening 14. A drainage cover 16 is fixedly connected to the right side of the air drying box 2. A second transmission pipe 17 is fixedly connected to the side of the drainage cover 16. The second transmission pipe 17 is connected to the ventilator 4. A third transmission pipe 18 is fixedly connected to the side of the ventilator 4. A connector 19 is arranged at the end of the third transmission pipe 18. The second fan 6 is directly below the first fan 5. The second fan 6 is at the center position on the top of the inner hole 7. There are multiple moving wheels 12. There are two track grooves 13. Multiple moving wheels 12 are arranged in two rows at the bottom of the placing table 10. The connector 19 is connected to an external pipe. The external pipe extends outside the workshop.

[0027] As Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 and Figure 8 shown: A first movable hole 20 is opened on the top of the air drying box 2. A first movable groove 21 is opened on the inner side of the opening 14. The first movable groove 21 and the first movable hole 20 are communicated with each other. The first movable groove 21 extends to the top of the base 1. The lifting door 15 is inside the first movable hole 20 and the first movable groove 21. A support frame 22 is fixedly connected to the top of the air drying box 2. A cylinder 23 is installed inside the support frame 22. The piston rod at the bottom of the cylinder 23 is connected to the top of the lifting door 15. A through hole 24 is opened on the surface of the support frame 22. There are multiple through holes 24.

[0028] As Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown in the figure: An observation port 25 is provided on the front side of the air drying box 2. A second movable hole 26 is opened on the side of the observation port 25, and a second movable groove 27 is opened inside the observation port 25. The second movable groove 27 communicates with the second movable hole 26. A sealing plate 28 is inserted into the second movable hole 26. The sealing plate 28 reaches inside the second movable groove 27 to close the observation port 25. A push block 29 is fixedly connected to the surface of the sealing plate 28. A placement groove 30 is opened on the front side of the base 1, and an infrared thermometer 31 is placed inside the placement groove 30.

[0029] When the present utility model is in use: The shell material is placed on the top of the placement table 10. The placement table 10 is pushed towards the air drying box 2. The placement table 10 moves by means of the moving wheels 12 at the bottom. The plurality of moving wheels 12 move along the two track grooves 13. The placement table 10 and the material reach inside the air drying box 2 through the opening 14. The control cylinder 23 is extended to drive the lifting door 15 to move downward in the first movable hole 20 and the first movable groove 21. The downward movement of the lifting door 15 closes the opening 14. The constant temperature fan 3 and the ventilation fan 4 are turned on. The constant temperature fan 3 conveys an air flow with a set temperature, which reaches the first fan 5 and the second fan 6 through the first transmission pipe 8 and the C-shaped pipe 9 respectively. The first fan 5 blows towards the top of the material, and the second fan 6 blows towards the bottom of the placement table 10. The air flow reaches the bottom of the material through the plurality of leakage holes 11. The top and bottom of the material are simultaneously dried with the same temperature. At the same time, the ventilation fan 4 acts on the second transmission pipe 17 and the drainage cover 16. The drainage cover 16 and the second transmission pipe 17 extract the air inside the air drying box 2. The air flows towards the drainage cover 16, passes through the drainage cover 16, the second transmission pipe 17 and the ventilation fan 4 and is discharged through the third transmission pipe 18. The upper and lower air flow temperatures of the material are the same, and the drying process is uniform and effective. The air circulation inside the box improves the drying effect of the material. The joint 19 is connected to an external pipe, and the external pipe extends outside the workshop. The air flow is discharged from the workshop through the third transmission pipe 18 and the external pipe, reducing the impact on the inside of the workshop. Hold the push block 29 and apply force to the right to drive the sealing plate 28 to move to the right, and the observation port 25 is opened, which is convenient to view the inside of the air drying box 2 through the observation port 25, helping to intuitively understand the material drying process. Take out the infrared thermometer 31 in the placement groove 30 and perform multi-directional temperature detection on the material inside the air drying box 2 through the observation port 25 to obtain temperature information for providing an effective reference.

[0030] Although the present utility model has been illustrated and described by referring to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and details can be made within the scope of the claims.

Claims

1. A silica sol shell air-drying device for valve casting, comprising a base (1), an air-drying box (2), a constant temperature fan (3) and a ventilator (4), wherein: The air drying box (2) is arranged on the top of the base (1), a first fan (5) is installed on the top of the air drying box (2), a second fan (6) is installed on the top of the base (1), an inner hole (7) is opened inside the base (1), the second fan (6) extends into the inner hole (7), a first transmission pipe (8) is fixedly connected to the top of the constant temperature fan (3), a C-shaped tube (9) is fixedly connected to the side of the first transmission tube (8), the upper end of the C-shaped tube (9) is connected to the first fan (5), and the lower end of the C-shaped tube (9) is connected to the second fan (6) through the inner hole (7), a placing table (10) is arranged inside the air drying box (2), the silica sol shell is placed on the top of the placing table (10), and a drain is arranged inside the placing table (10). A hole (11) is provided, and there are a plurality of leakage holes (11). A moving wheel (12) is provided at the bottom of the placement platform (10). A track groove (13) is provided at the top of the base (1). The moving wheel (12) is inside the track groove (13). The track groove (13) extends to the outside of the air drying box (2). An opening (14) is provided on the left side of the air drying box (2). A lifting door (15) is provided inside the opening (14). A drainage cover (16) is fixedly connected to the right side of the air drying box (2). A second transmission pipe (17) is fixedly connected to the side of the drainage cover (16). The second transmission pipe (17) is connected to the ventilator (4). A third transmission pipe (18) is fixedly connected to the side of the ventilator (4). A joint (19) is provided at the end of the third transmission pipe (18).

2. The silica sol shell air-drying device for valve casting according to claim 1 is characterized by: The second fan (6) is located directly below the first fan (5), and the second fan (6) is located in the center of the top of the inner hole (7).

3. The silica sol shell air-drying device for valve casting according to claim 1 is characterized by: There are a plurality of moving wheels (12), there are two track grooves (13), and the plurality of moving wheels (12) are arranged in two rows at the bottom of the placement platform (10).

4. The silica sol shell air-drying device for valve casting according to claim 1 is characterized by: The joint (19) is connected to an external pipeline, and the external pipeline extends to the outside of the workshop.

5. The silica sol shell air-drying device for valve casting according to claim 1 is characterized by: The top of the air drying box (2) is provided with a first movable hole (20), the inner side of the opening (14) is provided with a first movable groove (21), the first movable groove (21) and the first movable hole (20) are connected to each other, the first movable groove (21) extends to the top of the base (1), the lifting door (15) is inside the first movable hole (20) and the first movable groove (21), the top of the air drying box (2) is fixedly connected with a support frame (22), the inside of the support frame (22) is provided with a cylinder (23), and the piston rod at the bottom of the cylinder (23) is connected to the top of the lifting door (15).

6. The silica sol shell air-drying device for valve casting according to claim 5 is characterized by: The support frame (22) is provided with a through hole (24) on its surface, and there are a plurality of through holes (24).

7. The silica sol shell air-drying device for valve casting according to claim 1 is characterized by: The air drying box (2) is provided with an observation port (25) on the front side, a second movable hole (26) is provided on the side of the observation port (25), a second movable groove (27) is provided on the inner side of the observation port (25), the second movable groove (27) and the second movable hole (26) are communicated with each other, a sealing plate (28) is inserted into the inside of the second movable hole (26), the sealing plate (28) reaches the inside of the second movable groove (27) and closes the observation port (25), and a push block (29) is fixedly connected to the surface of the sealing plate (28).

8. The silica sol shell air-drying device for valve casting according to claim 1 is characterized by: The base (1) is provided with a placement groove (30) on the front side, and an infrared temperature measuring gun (31) is placed inside the placement groove (30).

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