Anti-adhesion ceramic core firing device

Abstract

The utility model discloses an anti-adhesion ceramic core firing device, which relates to the technical field of ceramic core firing and comprises a silicon-molybdenum rod high-temperature furnace, a concave frame is fixedly arranged at the top end in the silicon-molybdenum rod high-temperature furnace, and an anti-adhesion component is arranged in the silicon-molybdenum rod high-temperature furnace. A driving assembly used for driving the ceramic core to rotate is arranged at the bottom end in the silicon-molybdenum rod high-temperature furnace, the anti-adhesion assembly comprises two burning trays which are distributed up and down, bearing frames are embedded in the burning trays, a plurality of wave partition plates are arranged at the tops of the bearing frames, and an air heater is fixedly arranged at the top of the silicon-molybdenum rod high-temperature furnace. Adjacent ceramic cores are isolated through the wave partition plates and the convex balls, air blown by the air heater is blown to the tops of the two burning trays through the spraying holes, dynamic airflow isolation is achieved, and therefore the anti-adhesion effect on the ceramic cores is conveniently achieved, and the ceramic core burning quality and effect are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of ceramic core firing technology, specifically to a ceramic core firing device that prevents sticking. Background Technology

[0002] Ceramic core is a type of ceramic core used in investment casting. As a transition body to form the cavity of the casting, its function is to form the internal cavity structure of the casting and, together with the outer mold and mold shell, ensure the dimensional accuracy requirements of the casting for the cavity. However, ceramic core requires the use of a firing device during its use.

[0003] For example, a ceramic firing apparatus according to Chinese patent application number CN202121041124.6 can be used to fire ceramic cores. The apparatus includes a firing chamber, with supporting legs fixedly installed at the bottom. A door is fixedly installed on the front surface of the chamber, and an observation window is fixedly installed on the surface of the door. A handle is fixedly installed on the surface of the door and to the right of the observation window. Multiple heating elements are fixedly installed on the left and right side walls inside the firing chamber. In this invention, the motor rotation facilitates the fixing of the ceramic blank, thus avoiding collisions during material feeding and unloading, which could cause ceramic breakage. The fan ensures even heat distribution inside the firing chamber, preventing cracking. The extended electric telescopic rod automatically exposes the placement plate outside the firing chamber, facilitating firing and material removal. External cooling also reduces heat loss from the inside of the firing chamber.

[0004] However, in actual use, when the ceramic cores to be fired are placed in the firing chamber of the above-mentioned device, the stacked ceramic cores are prone to softening at high temperature and sticking together, which leads to a decrease in the pass rate of the fired ceramic cores and greatly reduces the efficiency and quality of ceramic core firing. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides an anti-adhesion ceramic core firing device. It isolates adjacent ceramic cores by using corrugated baffles and convex balls, and then blows air from a hot air blower through several nozzles onto the top of two firing plates to achieve dynamic airflow isolation. This facilitates the anti-adhesion effect on the ceramic cores, ensuring the quality and effect of ceramic core firing, and effectively solving the problems in the background technology.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a ceramic core firing device for preventing adhesion, comprising a silicon molybdenum rod high-temperature furnace, wherein a concave frame is fixedly provided at the top of the inside of the silicon molybdenum rod high-temperature furnace;

[0007] The high-temperature furnace for silicon molybdenum rods is equipped with an anti-sticking component.

[0008] The silicon molybdenum rod high-temperature furnace has a drive assembly at the bottom inside for driving the ceramic core to rotate.

[0009] The anti-adhesion assembly includes two vertically distributed firing trays, each with a support frame embedded inside. The top of the support frame is provided with several corrugated baffles. A hot air blower is fixedly installed on the top of the silicon molybdenum rod high-temperature furnace. A connecting pipe is fixedly installed at the air outlet of the hot air blower. The bottom end of the connecting pipe passes through the silicon molybdenum rod high-temperature furnace, the concave frame, and the top firing tray. Several evenly distributed spray holes are opened on the connecting pipe, and the ceramic core is placed between two adjacent corrugated baffles to facilitate the isolation of adjacent ceramic cores.

[0010] Preferably, several of the spray holes are respectively located on the top of the two firing plates, the bottom end of the connecting pipe is fixedly connected to the top end of the bottom firing plate, and a pulse electric valve is fixedly provided on the top end of the connecting pipe, and the pulse electric valve is located at the bottom of the concave frame to facilitate control of the flow direction and flow rate of the hot air.

[0011] Preferably, a T-shaped ring rail is provided at the outer end of the top of the firing tray, and a slide rail is provided at the inner end of the top of the firing tray near the support frame. Several locking rods are engaged at the top of the inside of the T-shaped ring rail, and several sliding rods are slidably provided at the top of the inside of the slide rail. The number of locking rods and sliding rods are the same, which facilitates the sliding of the locking rods and sliding rods.

[0012] Preferably, the two ends of the corrugated baffle are respectively fixed between the corresponding snap-fit ​​rod and the slide rod, and the top of the support frame is fixed with a number of evenly distributed convex balls to facilitate the isolation of the bottom of the ceramic core from the support frame.

[0013] Preferably, the drive assembly includes four evenly distributed connecting columns, which are respectively fixed between the outer walls of the two firing plates. A drive box is fixedly installed at the bottom of the silicon molybdenum rod high-temperature furnace, and a motor is fixedly installed inside the drive box. The output shaft of the motor passes through the bottom of the silicon molybdenum rod high-temperature furnace and is fixedly connected to the center of the bottom end of the firing plate, so that the motor can drive the two firing plates to rotate and make the ceramic core at the top of the furnace evenly heated.

[0014] Preferably, the silicon molybdenum rod high-temperature furnace has a furnace door connected to the front hinge, an exhaust pipe is fixedly connected to the bottom of one side of the silicon molybdenum rod high-temperature furnace, a pressure relief valve is fixedly installed on the exhaust pipe to facilitate pressure relief inside the silicon molybdenum rod high-temperature furnace, and four evenly distributed support columns are fixedly installed at the bottom of the silicon molybdenum rod high-temperature furnace to facilitate support of this utility model.

[0015] Compared with the prior art, this utility model provides a ceramic core firing device that prevents adhesion, which has the following beneficial effects:

[0016] 1. This utility model uses several corrugated baffles that are adjusted to move closer or further apart to separate adjacent ceramic cores and prevent them from contacting each other. At the same time, several convex balls prevent the bottom of the ceramic core from sticking to the top of the support frame. Furthermore, the hot air blows air through the nozzles to the top of the two firing plates and achieves dynamic airflow isolation for the ceramic cores during firing. This helps to prevent the ceramic cores from sticking together and ensures the quality and effect of firing the ceramic cores.

[0017] 2. The rotating bottom firing plate of this utility model drives the top firing plate to rotate. The rotation of the two firing plates drives the ceramic core placed on the top of the support frame to rotate, thereby ensuring that the ceramic core is heated evenly, avoiding stress concentration caused by temperature gradient during static firing, and significantly reducing the risk of deformation and cracking. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the anti-adhesion component structure of this utility model;

[0021] Figure 4 This is a partial structural diagram of the driving component and the anti-adhesion component of this utility model;

[0022] Figure 5 This is a partial structural diagram of the anti-adhesion component of this utility model.

[0023] In the diagram: 1. High-temperature furnace for silicon molybdenum rods; 2. Anti-adhesion assembly; 3. Drive assembly; 4. Exhaust pipe; 5. Pressure relief valve; 6. Furnace door; 7. Support column; 8. Recessed frame.

[0024] 21. Burning plate, 22. Hot air blower, 23. Connecting pipe, 24. Pulse electric valve, 25. Spray hole, 26. T-type ring rail, 27. Slide rail, 28. Bearing frame, 29. Clip rod, 210. Slide rod, 211. Corrugated baffle, 212. Convex ball, 31. Connecting column, 32. Motor, 33. Drive box. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] like Figure 1-5As shown, this utility model provides a ceramic core firing device for preventing adhesion, including a silicon molybdenum rod high-temperature furnace 1. A recessed frame 8 is fixedly provided at the top of the inside of the silicon molybdenum rod high-temperature furnace 1. A furnace door 6 is connected to the front hinge of the silicon molybdenum rod high-temperature furnace 1. An exhaust pipe 4 is fixedly connected to the bottom of one side of the silicon molybdenum rod high-temperature furnace 1. A pressure relief valve 5 is fixedly provided on the exhaust pipe 4 to facilitate pressure relief inside the silicon molybdenum rod high-temperature furnace 1. Four evenly distributed support columns 7 are fixedly provided at the bottom of the silicon molybdenum rod high-temperature furnace 1 to facilitate support of this utility model.

[0027] like Figure 1-5 As shown, the silicon molybdenum rod high-temperature furnace 1 is equipped with an anti-sticking component 2. The anti-sticking component 2 includes two vertically distributed firing trays 21. Each firing tray 21 is embedded with a support frame 28. The top of the support frame 28 is provided with several corrugated baffles 211. A hot air blower 22 is fixedly installed on the top of the silicon molybdenum rod high-temperature furnace 1. A connecting pipe 23 is fixedly installed at the air outlet of the hot air blower 22. The bottom end of the connecting pipe 23 passes through the silicon molybdenum rod high-temperature furnace 1, the concave frame 8 and the top firing tray 21.

[0028] The connecting pipe 23 has several evenly distributed nozzles 25, and the ceramic core is located between two adjacent corrugated baffles 211 to facilitate the isolation of adjacent ceramic cores. The nozzles 25 are respectively located on the top of the two firing plates 21. The bottom end of the connecting pipe 23 is fixedly connected to the top end of the bottom firing plate 21. A pulse electric valve 24 is fixedly installed on the top end of the connecting pipe 23, and the pulse electric valve 24 is located at the bottom of the concave frame 8 to facilitate the control of the direction and flow rate of the hot air.

[0029] The outer top of the firing plate 21 is provided with a T-shaped ring rail 26, and the inner top of the firing plate 21 near the support frame 28 is provided with a slide rail 27. The top of the T-shaped ring rail 26 is engaged with several locking rods 29, and the top of the slide rail 27 is slidably provided with several sliding rods 210. The number of locking rods 29 and sliding rods 210 is the same, which facilitates the sliding of locking rods 29 and sliding rods 210. The two ends of the corrugated baffle 211 are respectively fixed between the corresponding locking rods 29 and sliding rods 210. The top of the support frame 28 is fixed with several evenly distributed convex balls 212, which facilitates the isolation of the bottom of the ceramic core from the support frame 28.

[0030] By setting the anti-adhesion component 2, the furnace door 6 is first opened. Then, according to the size of the ceramic core to be fired, the corrugated partition 211 is pushed to drive the locking rod 29 and the sliding rod 210 to slide along the slide rail 27 and the inside of the slide rail 27 respectively. This causes several corrugated partitions 211 on the same layer to move closer or further apart from each other, making it convenient to place ceramic cores of different sizes on the support frame 28 on the top of the firing plate 21. The corrugated partitions 211 separate adjacent ceramic cores, preventing them from contacting each other and also preventing them from contacting the corrugated partitions 211, thus achieving the effect of preventing adhesion. At the same time, several convex balls 212 contact the bottom of the ceramic core, which also prevents the bottom of the ceramic core from sticking to the top of the support frame 28.

[0031] Next, the hot air blower 22 is controlled to work, causing the pulse electric valve 24 to open. The hot air blower 22 sends hot air into the connecting pipe 23, and the connecting pipe 23 sends it into the top of the two firing plates 21 through several nozzles 25, thereby achieving dynamic airflow isolation for the ceramic core during firing. This helps to prevent the ceramic core from sticking together and ensures the quality and effect of firing the ceramic core.

[0032] like Figure 1 , 2 As shown in Figure 4, the silicon molybdenum rod high-temperature furnace 1 has a drive assembly 3 at its bottom for driving the ceramic core to rotate. The drive assembly 3 includes four evenly distributed connecting columns 31, which are respectively fixed between the outer walls of the two firing plates 21. The bottom of the silicon molybdenum rod high-temperature furnace 1 is fixedly provided with a drive box 33, and a motor 32 is fixedly provided inside the drive box 33. The output shaft of the motor 32 passes through the bottom of the silicon molybdenum rod high-temperature furnace 1 and is fixedly connected to the center of the bottom end of the firing plate 21, so that the motor 32 can drive the two firing plates 21 to rotate, so that the ceramic core at the top is heated evenly.

[0033] By setting up the drive assembly 3, the motor 32 inside the drive box 33 is controlled to work during the firing process of the placed ceramic core. The motor 32 drives the bottom firing plate 21 to rotate, and at the same time, it drives the top firing plate 21 to rotate through the four connecting columns 31. The rotation of the two firing plates 21 drives the ceramic core placed on the top of the support frame 28 to rotate, thereby ensuring that the ceramic core is heated evenly, avoiding stress concentration caused by temperature gradient during static firing, and significantly reducing the risk of deformation and easy cracking.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An anti-adhesion ceramic core firing device comprising a silicon molybdenum rod high temperature furnace (1), characterized in that: The silicon molybdenum rod high-temperature furnace (1) is internally provided with a concave frame (8) fixed at the top end; The silicon molybdenum rod high-temperature furnace (1) is internally provided with an anti-adhesion assembly (2); The silicon molybdenum rod high-temperature furnace (1) is internally provided with a driving assembly (3) for driving the ceramic core to rotate at the bottom end; The anti-adhesion assembly (2) comprises two upper and lower supporting plates (21), the supporting plates (21) are internally inlaid with bearing frames (28), the top of the bearing frame (28) is provided with a plurality of wave-shaped partitions (211), the top of the silicon molybdenum rod high-temperature furnace (1) is fixedly provided with a hot air blower (22), the air outlet of the hot air blower (22) is fixedly provided with a connecting pipe (23), the bottom end of the connecting pipe (23) penetrates the silicon molybdenum rod high-temperature furnace (1), the concave frame (8) and the top supporting plate (21), a plurality of evenly distributed spray holes (25) are formed in the connecting pipe (23), and the ceramic core is arranged between two adjacent wave-shaped partitions (211).

2. A ceramic core firing apparatus to prevent sticking according to claim 1, wherein: A plurality of spray holes (25) are arranged at the top of the two supporting plates (21), the bottom end of the connecting pipe (23) is fixedly connected with the top end of the bottom supporting plate (21), the top end of the connecting pipe (23) is fixedly provided with a pulse electric valve (24), and the pulse electric valve (24) is arranged at the bottom of the concave frame (8).

3. A ceramic core firing apparatus to prevent sticking according to claim 2, wherein: The top of the supporting plate (21) is externally provided with a T-shaped ring rail (26), the inner end of the top of the supporting plate (21) is provided with a sliding rail (27) close to the bearing frame (28), the inside of the T-shaped ring rail (26) is top-jointedly provided with a plurality of joint rods (29), the inside of the sliding rail (27) is top-slidably provided with a plurality of sliding rods (210), and the number of the joint rods (29) is the same as that of the sliding rods (210).

4. The anti-blocking ceramic core firing apparatus of claim 3, wherein: The wave-shaped partitions (211) are fixedly arranged between the corresponding joint rods (29) and sliding rods (210) at both ends, and the top of the bearing frame (28) is fixedly provided with a plurality of evenly distributed convex balls (212).

5. The anti-sticking ceramic core firing apparatus of claim 1, wherein: The driving assembly (3) comprises four evenly distributed connecting columns (31), the four connecting columns (31) are fixedly arranged between the outer side walls of the two supporting plates (21), the bottom of the silicon molybdenum rod high-temperature furnace (1) is fixedly provided with a driving box (33), the inside of the driving box (33) is fixedly provided with a motor (32), and the output shaft of the motor (32) penetrates the bottom of the silicon molybdenum rod high-temperature furnace (1) and is fixedly connected with the bottom end center of the bottom supporting plate (21).

6. The anti-sticking ceramic core firing apparatus of claim 1, wherein: The front side of the silicon molybdenum rod high-temperature furnace (1) is hingedly connected with a furnace door (6), one side of the bottom of the silicon molybdenum rod high-temperature furnace (1) is fixedly connected with an exhaust pipe (4), the exhaust pipe (4) is fixedly provided with a pressure relief valve (5), and the bottom of the silicon molybdenum rod high-temperature furnace (1) is fixedly provided with four evenly distributed supporting columns (7).

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