Vacuum casting method and casting device for continuously casting slurry

Abstract

The application discloses a kind of vacuum casting method and its pouring device of continuous castable slurry, comprising the following steps: step one, external material turning machine pours the slurry in mixing kettle into primary hopper;Step two, the shell to be cast is placed in pouring cabin;Step three, primary hopper is hoisted to the cover of secondary hopper;Step four, secondary hopper and pouring cabin are vacuumized;Step five, open the feeding valve I, primary hopper can be replaced, until the completion of this batch of slurry transfer;Step six, open the secondary hopper discharge valve II, step seven, after completing casting, close the discharge valve II;Step eight, open the cabin door, remove the completed casting shell, place a new shell to be cast in the pouring cabin, until the completion of this batch of casting production.The application is provided with replaceable primary hopper and shell tray, which is matched with external hoisting device and forklift, to realize the quick replacement of primary hopper and the shell to be cast, realize continuous casting, and improve production efficiency.

Description

Technical Field

[0001] This invention relates to the field of aerospace vacuum technology, specifically to a vacuum casting device and casting method for continuously castable slurry. Background Technology

[0002] In the vacuum casting production field of aerospace, weaponry, and chemical industries, the design of the casting equipment directly affects production efficiency, material utilization, and product quality. Slurry mixing in the aerospace and weaponry industries is a complex process, requiring expensive and bulky equipment. Mixing and casting are typically located in separate workshops at a certain distance (for safety reasons), making direct connection between mixing and casting impossible. In existing casting equipment, the shell to be cast is usually hoisted from the top of the vacuum casting chamber, the chamber cover is closed, a casting hopper is installed on the cover, and then vacuuming and casting are performed. After each batch of products is cast, casting must be stopped, the casting hopper removed, the chamber cover opened, the product hoisted out, and a new shell hoisted in to prepare for the next casting. When the slurry in the casting hopper is depleted, casting also needs to be stopped, the hopper moved to a replenishment position, and slurry replenished. Continuous casting operations are not possible. Meanwhile, to accommodate the casting of numerous small products, the position of the casting hopper is often moved, or a shell rotation device is set up to achieve separate casting of each shell, resulting in low production efficiency. For example, in a vacuum casting device and casting method for reducing the grain size of aluminum alloy castings disclosed in CN107570687A, when it is necessary to replenish the material inside the pot, the sealed box must be reopened and the material replenished again. The casting operation can only be carried out after the material replenishment is completed. During the material replenishment process, the casting operation must be stopped, making continuous casting operation impossible. Summary of the Invention

[0003] One object of the present invention is to solve at least the above-mentioned problems and / or defects, and to provide at least the advantages described below.

[0004] To achieve these objectives and other advantages of the present invention, a vacuum casting method for continuously castable slurry is provided, comprising: Step 1: Pour the slurry from the mixing pot into the primary hopper using an external material turning machine; Step 2: Using a forklift and a shell pallet, place the shell to be poured into the pouring chamber.

[0005] Step 3: Hoist the primary hopper onto the cover of the secondary hopper assembly; Step 4: Activate the external vacuum device to vacuum the secondary hopper and casting chamber respectively; Step 5: When the vacuum level in Step 4 reaches the predetermined value, open the discharge valve I, and feed material from the primary hopper to the secondary hopper. The primary hopper can be replaced until the transfer of this batch of slurry is completed. Step 6: Using the camera on the cover of the secondary hopper assembly, observe when the slurry reaches the set position in the secondary hopper. Then, open the secondary hopper discharge valve II to pour the shell to be poured in the vacuum casting chamber. Step 7: Observe whether the shell to be poured has been poured through the monitoring module on the top of the pouring chamber. After the pouring is completed, close the material discharge valve II. Step 8: Open the hatch, use a forklift to transport the completed shell pallet and remove it, then place the new shell to be poured into the pouring chamber until the production of this batch is completed.

[0006] Preferably, in step six, the camera is used to observe the process, and when any one of the guide channels inside the secondary hopper is exposed, the discharge valve II below the corresponding guide channel is closed.

[0007] Preferably, in step five, after the primary hopper has finished feeding, the primary hopper is removed, and steps one, three, four, and five are repeated to continuously replenish material until the current batch of casting production is completed.

[0008] Preferably, in step four, the external heating device is turned on to heat the secondary hopper, so that the slurry inside the secondary hopper is maintained at the set temperature.

[0009] A vacuum casting device for continuous slurry casting, applied in the casting method, the vacuum casting device includes: a support platform, a secondary hopper assembly mounted above the support platform by multiple support rods I, and a vacuum casting chamber mounted below the support platform for installing the shell to be cast, characterized in that it further includes: a primary hopper assembly mounted on the cover of the secondary hopper assembly by multiple support rods II, and the discharge valve I is located at the discharge port I of the primary hopper assembly; The vacuum casting chamber has a door on one side for sealing the vacuum casting chamber. The shell to be cast is placed inside the vacuum casting chamber via a shell tray. The discharge valve is connected to the inlet of the secondary hopper assembly via a flange. The bottom of the secondary hopper assembly is provided with a discharge port II that is connected to the vacuum casting chamber. The discharge valve II is located at the discharge port II.

[0010] Preferably, the upper surface of the primary hopper assembly is provided with a hook that cooperates with an external hoisting device.

[0011] Preferably, the hatch is slidably connected to the vacuum casting chamber via a track assembly mounted on a support platform.

[0012] Preferably, the primary hopper assembly includes: a support rod II disposed on the cover of the secondary hopper assembly, the support rod II being provided with a primary hopper having a conical bottom structure, and a mounting plate for installing a discharge valve being disposed at the middle of the support rod II, located at the discharge port I of the primary hopper; The hook is located on the upper surface of the primary hopper.

[0013] Preferably, it also includes: a monitoring module located on the top of the inner side of the vacuum casting chamber for observing the status of the discharge port II; The monitoring module is connected to an external control terminal for communication.

[0014] The present invention has at least the following beneficial effects: 1. The present invention achieves normal material replenishment in the casting chamber without stopping the casting by quickly replacing the primary hopper set on the secondary hopper through an external hoisting device; 2. This invention utilizes a side-opening door in the vacuum casting chamber, which works in conjunction with a shell pallet. Forklifts can cyclically remove the finished casting products and push them back into the chamber, enabling continuous casting and improving production efficiency.

[0015] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a structural schematic diagram of the primary hopper assembly; Figure 3 A schematic diagram of the monitoring module inside the vacuum casting chamber; Figure 4 This is a schematic diagram of the structure of the secondary hopper assembly; Figure 5 This is a cross-sectional view of the secondary hopper.

[0017] Reference numerals: 1. Support platform; 2. Support rod I; 3. Secondary hopper assembly; 31. Secondary hopper; 32. Cover; 33. Inlet; 34. Conical connector; 35. Protrusion; 37. Cavity; 38. Discharge port II; 39. Discharge valve II; 391. Camera; 392. Vacuum port; 4. Vacuum casting chamber; 5. Support rod II; 6. Primary hopper assembly; 61. Primary hopper; 62. Discharge port I; 63. Mounting plate; 64. Hook; 7. Discharge valve I; 8. Door; 9. Shell tray; 10. Shell to be cast; 11. Monitoring module. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description. It should be understood that terms such as "having," "comprising," and "including" as used herein do not exclude the presence or addition of one or more other elements or combinations thereof. It should be noted that in the description of the present invention, the orientation or positional relationship indicated by terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description; it does 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, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the present invention, unless otherwise expressly specified and limited, terms such as "installed," "provided with," "sleeved / connected," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances. Furthermore, in this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0019] The present invention provides a vacuum casting method for continuously castable slurry, comprising: Step 1: Pour the slurry in the mixing pot into the primary hopper 61 using an external material turning machine; Step 2: Using a forklift and shell pallet 9, place the shell 10 to be poured into the pouring chamber.

[0020] Step 3: Hoist the primary hopper 61 onto the cover 32 of the secondary hopper assembly 3; Step 4: Activate the external vacuum device to vacuum the secondary hopper 31 and the casting chamber respectively; Step 5: When the vacuum level in Step 4 reaches the predetermined value, open the discharge valve I7, and feed material from the primary hopper 61 to the secondary hopper 31. The primary hopper 61 can be replaced until the transfer of this batch of slurry is completed. Step 6: Observe the slurry when it reaches the set position in the secondary hopper height through the camera 391 on the cover 32 of the secondary hopper assembly 3, and open the secondary hopper discharge valve II 39 to pour the shell 10 to be poured in the vacuum casting chamber 4. Step 7: Observe whether the casting shell 10 has been completed through the monitoring module 11 on the top of the casting chamber. After the casting is completed, close the material discharge valve II 39. Step 8: Open the hatch 8, use a forklift to transport the completed casting shell pallet 9 to remove it, and place the new shell to be cast 10 into the casting chamber until the casting production of this batch is completed.

[0021] Working principle: Step 1: In the preparation work for pouring, start the external material turning machine to pour the slurry in the mixing pot into the primary hopper 61. When the primary hopper 61 is full, the rotary material turning machine stops feeding. Step 2: Place the shell 10 to be poured on the shell pallet 9, and use a forklift to put the shell pallet 9 into the pouring chamber, and align the pouring port of each shell 10 to be poured with the unloading port II 38 in space; Step 3: The external hoisting device connects with the hook 64 on the primary hopper 61 to hoist the primary hopper 61 above the secondary hopper 31. The primary hopper 61 descends by its own weight. The conical connector 34 above the secondary hopper 31 opens the discharge valve I7 and locks the seal. Then the hoisting device separates from the primary hopper 61. Step 4: Turn on the external vacuum device to evacuate the secondary hopper 31 and the casting chamber, so that the vacuum degree inside is less than 1.07 kPa. Step 5: When the vacuum level in Step 4 is less than 1.07 kPa, open the discharge valve I7, and feed material from the primary hopper 61 to the secondary hopper 31. Observe the downward flow of the slurry and control the opening of the discharge valve I7. The flow rate at each discharge port I62 should be controlled at 13-15 g / min. Step 6: Using the camera 391 on the cover 32 of the secondary hopper assembly 3, when the camera 391 observes that the guide channel inside the secondary hopper 31 is completely submerged or the slurry inside the secondary hopper 31 occupies one-quarter of the volume, open the secondary hopper discharge valve II 39 to pour the shell 10 to be poured in the vacuum casting chamber 4. Step 7: Observe whether the casting shell 10 has been completed through the monitoring module 11 on the top of the casting chamber. After the casting is completed, close the material discharge valve II 39. Step 8: Open the hatch 8, use a forklift to transport the completed casting shell pallet 9 to remove it, and place the new shell to be cast 10 into the casting chamber until the casting production of this batch is completed.

[0022] In the above process, when opening the hatch 8 in step eight, it is necessary to perform a venting operation on the casting chamber. The venting of the casting chamber is divided into two stages. In the first stage, the internal air pressure of the vacuum chamber is greater than 1.07 kPa and less than 80 kPa, and the venting time is 8 minutes. In the second stage, the internal air pressure of the vacuum chamber is greater than 80 kPa until the air pressure is reduced to normal, and the venting time is 4 minutes. Through the two-stage venting, splashing of energetic materials during production can be avoided, thus preventing safety accidents during production. In step six, during the material feeding process of the secondary hopper 31, when the camera 391 observes that the guide channel of the secondary hopper 31 is exposed, the material feeding valve II 39 below the corresponding guide channel is closed to prevent the interior of the secondary hopper 31 from being directly connected to the casting chamber, thus preventing the vacuum state from being broken down, and the casting of the shell 10 to be cast is completed one by one. In step five, after the primary hopper 61 has finished feeding, the primary hopper 61 is removed, and steps one, three, four, and five are repeated to continuously replenish material until the current batch of casting production is completed, thus realizing continuous material replenishment during the production process. Meanwhile, in step four, during the vacuuming process of the secondary hopper 31, the external heating device is turned on. The heating device supplies hot water into the shell of the secondary hopper 31 for heat preservation, so that the temperature of the slurry inside the secondary hopper 31 is maintained at 50°C.

[0023] A vacuum casting device for continuous slurry casting is applied in the casting method described above. The vacuum casting device includes: a support platform 1, a secondary hopper assembly 3 mounted above the support platform 1 via multiple support rods I2, and a vacuum casting chamber 4 mounted below the support platform 1 for mounting the shell 10 to be cast. The device is characterized in that it further includes: a primary hopper assembly 6 mounted on the cover 32 of the secondary hopper assembly 3 via multiple support rods II5, and a discharge valve I7 is located at the discharge port I62 of the primary hopper assembly 6. The vacuum casting chamber 4 has a door 8 on one side for sealing the vacuum casting chamber 4. The shell to be cast 10 is placed in the vacuum casting chamber 4 via a shell tray 9. The discharge valve is connected to the inlet 33 of the secondary hopper assembly 3 via a flange. The bottom of the secondary hopper assembly 3 is provided with a discharge port II 38 connected to the vacuum casting chamber 4. The discharge valve II 39 is located at the discharge port II 38.

[0024] Working principle: The primary hopper assembly 6 is supported by multiple support rods II5, which place it on the cover 32 of the secondary hopper assembly 3. A discharge valve I7 is installed at the discharge port I62 of the primary hopper assembly 6, and the discharge valve I7 is connected to the inlet 33 of the secondary hopper assembly 3 via a flange. When feeding material into the secondary hopper assembly 3, the discharge valve I7 at the discharge port I62 of the primary hopper assembly 6 is opened. Under the action of gravity and pressure difference (when the secondary hopper 31 is under vacuum), the slurry flows from the primary hopper assembly 6 through the discharge port I62 and the flange-connected channel into the secondary hopper assembly 3. The secondary hopper assembly 3 serves to temporarily store and buffer the slurry, allowing it to enter the vacuum casting chamber 4 more stably. The vacuum casting chamber 4 contains the shell 10 to be cast. Before casting, the vacuum casting chamber 4 is evacuated to remove air, preventing the slurry from generating bubbles or reacting with air during casting, which could affect product quality. When the discharge port II38 at the bottom of the secondary hopper assembly 3 is opened, under the combined action of gravity and pressure difference, the slurry enters the vacuum casting chamber 4 from the secondary hopper assembly 3 through the discharge port II38 and flows into the shell 10 to be cast, completing the casting process of the shell.

[0025] A door 8 is opened on one side of the casting chamber, and the shell 10 to be cast is placed in the chamber through a tray.

[0026] Before casting, the tray containing the shell is sent into the designated position inside the vacuum casting chamber 4 via a transfer device. After a set of products is cast, the vacuum in the casting chamber is broken, and the products along with the tray are quickly transported out of the casting chamber and sent to the next set of shells. The vacuum in the casting chamber is then evacuated again, and the discharge valve II39 of the discharge port II38 is opened to continue casting. This cycle is repeated until all products in this batch are cast.

[0027] The upper surface of the primary hopper assembly 6 is equipped with a hook 64 that cooperates with an external hoisting device. Through the cooperation of the external hoisting device and the hook 64, the primary hopper assembly 6 can be quickly replaced. When casting large products requiring multiple hoppers of slurry, after the primary hopper 61 is empty, the slurry discharge valve I7 is closed, and the primary hopper assembly 6 is lifted off the ground by the external hoisting device and transferred to the replenishment position. At this time, the secondary hopper 31 does not need to stop casting. By replacing the primary hopper assembly 6 with a new one filled with slurry, or by refilling the previous primary hopper assembly 6, a continuous supply is formed. This cycle continues casting until the shell is full. This avoids casting interruptions and accelerates production efficiency. The above technical solution improves the efficiency of the entire production process and meets the needs of continuous production.

[0028] In the above technical solution, the hatch 8 is slidably connected to the casting chamber via a track assembly mounted on the support platform 1. In this solution, the track assembly includes a pair of guide rails mounted on the vacuum casting chamber 4, and the hatch 8 is slidably mounted within these guide rails via a drive motor. The guide rails provide precise guidance for the movement of the hatch 8, allowing it to slide smoothly along a predetermined path during opening and closing, preventing any impact on the sealing effect due to shaking or offset, thus ensuring the vacuum stability of the vacuum casting chamber 4 during operation. The application of the drive motor greatly improves the automation level of the hatch 8 operation. Operators can easily and quickly open or close the hatch by controlling the drive motor, eliminating the need for significant manpower and significantly improving work efficiency.

[0029] In the above technical solution, the primary hopper assembly 6 includes: a support rod II5 disposed on the cover 32 of the secondary hopper assembly 3, a primary hopper 61 with a conical bottom structure disposed on the support rod II5, and a mounting plate 63 for installing a discharge valve I7 disposed at the middle of the support rod II5 at the discharge port I62 of the primary hopper 61. The hook 64 is located on the upper surface of the primary hopper 61. This design utilizes a conical inner wall to continuously guide the slurry towards the center, allowing it to flow to the bottom discharge port I 62 at a faster speed and in a more concentrated manner. This structural design significantly reduces slurry adhesion and residue on the hopper wall, ensuring that as much slurry as possible is delivered to the secondary hopper assembly 3 during each discharge process. This improves slurry utilization, reduces raw material waste, and also helps ensure the stability and continuity of slurry supply during casting. A mounting plate 63 is installed at the position of the middle of the support rod II5 corresponding to the discharge port I62 for installing the discharge valve I7, ensuring the stability of the discharge valve I7. The hook 64 is set on the upper surface of the primary hopper 61. When it is necessary to replenish or replace the primary hopper 61, the external hoisting equipment can quickly connect to the primary hopper through the hook 64 to realize the rapid replacement of the primary hopper. The secondary hopper assembly 3 includes: a secondary hopper 31, a cover 32 that cooperates with the secondary hopper 31, the cover 32 having a feed port 33, and a semi-circular protrusion 35 with a size smaller than the bottom of the secondary hopper 31 located on the inner side of the bottom center of the secondary hopper 31. The protrusion 35 and the inner wall of the secondary hopper 31 are connected to each other by multiple conical cavities 37 to form an integral structure. The discharge port II 38 is located at the bottom of each cavity 37. It also includes: a camera 391 mounted on the cover 32 for observing the slurry inside the hopper, and discharge valves II 39 mounted on each discharge port II 38; the discharge valves II 39 and the camera 391 are communicatively connected to an external control terminal. A conical connector 34 is mounted on the inlet 33 to cooperate with the discharge valve I 7. The conical connector 34 is connected to the discharge valve I 7 via a flange. The slurry is injected into the secondary hopper 31 through the inlet 33 on the cover 32 and the conical connector 34. Due to the large space at the top of the hopper, it can quickly accommodate a large amount of slurry, storing material for the subsequent pouring process. At this time, the slurry flows towards the bottom of the hopper under gravity. A semi-circular protrusion 35 is located on the inner side of the center of the bottom of the secondary hopper 31, and its structure guides the slurry to diffuse outwards. The slurry flows from the central protrusion 35 to multiple conical guide channels around it. The conical guide channel's shape serves a natural guiding function. As the slurry flows, its cross-sectional area gradually decreases, accelerating the slurry and allowing it to move more quickly to the bottom of the channel. Multiple guide channels are evenly distributed between the protrusion 35 and the inner wall of the hopper, uniformly distributing the slurry to each channel and ensuring simultaneous preparation for casting. The discharge port II 38 at the bottom of each guide channel corresponds to the product to be cast. Under its own gravity, the slurry, accelerated by the conical guide channel, flows rapidly out of the discharge port II 38, casting the product. Because multiple discharge ports II 38 discharge simultaneously, and the slurry maintains uniformity during distribution, it can quickly and evenly fill the product, improving casting efficiency and quality.In this invention, the semi-circular protrusion 35 and the conical guide channel structure facilitate the flow of slurry to the surrounding discharge ports II 38 under gravity, significantly reducing residual slurry and increasing slurry utilization. Simultaneously, the camera 391 transmits real-time images of the remaining slurry volume and flow status within the hopper to the control terminal. When the slurry level in the hopper body forms a certain guide channel, the control terminal sends a signal to the corresponding control valve, closing the discharge valve II 39 of the corresponding discharge port II 38. This prevents the vacuum state inside the secondary hopper 31 from being broken, while ensuring that the pouring process at other discharge ports II 38 is not disturbed, maintaining the stability of the pouring process, and completing the material-saving pouring process sequentially. It should be noted that the discharge valve II 39 is a commonly used device in this technical field, and its structure will not be described in detail here.

[0030] The cover 32 is equipped with a vacuum port 392 that connects to an external vacuum device. By evacuating the interior of the secondary hopper 31 into a vacuum, the resistance of air to the flow of the slurry is reduced, making the diffusion of the slurry around the semi-circular protrusion 35 and its accelerated flow in the conical guide channel smoother. In the absence of air interference, the uniformity of the slurry when it is distributed to each guide channel is greatly improved.

[0031] The above technical solution also includes a monitoring module 11 located on the top inner side of the vacuum casting chamber 4 for observing the status of the discharge port II 38; wherein the monitoring module 11 is communicatively connected to an external control terminal. In this technical solution, the monitoring module 11 includes a camera assembly and a light source. The light source provides supplementary lighting for the camera assembly inside the vacuum casting chamber 4, because the vacuum casting chamber 4 is in a closed state during the material discharge process, and the interior is in a dark environment. Through the supplementary lighting, the camera assembly can monitor in real time whether the shell to be cast 10 has completed casting, and also provide real-time, intuitive information on the status of the discharge port II 38. When the casting is completed inside the shell to be cast, the control terminal sends a signal to the discharge valve II 39 at the discharge port II 38, closing the discharge valve II 39 and stopping the slurry discharge. The camera component inside the vacuum casting chamber 4 and the camera 391 on the secondary hopper 31 perform different functions. The camera component inside the vacuum casting chamber 4 monitors the casting status of the shell to be cast and then controls the discharge valve II 39 to achieve the casting of the shell. The camera 391 on the secondary hopper 31 monitors whether the guide channel inside the secondary hopper 31 is exposed. Once exposed, the discharge valve II 39 is closed through the control terminal to prevent the discharge port II 38 of the secondary hopper 31 from connecting with the vacuum casting chamber 4 and thus breaking the vacuum state.

[0032] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A vacuum casting method for continuously castable slurry, characterized in that, include: Step 1: Pour the slurry from the mixing pot into the primary hopper using an external material turning machine; Step 2: Using a forklift and a shell pallet, place the shell to be poured into the vacuum casting chamber; Step 3: Hoist the primary hopper onto the cover of the secondary hopper assembly; Step 4: Activate the external vacuum pumping device to evacuate the secondary hopper and vacuum casting chamber respectively; Step 5: When the vacuum level in Step 4 reaches the predetermined value, open the discharge valve I, and feed material from the primary hopper to the secondary hopper. The primary hopper can be replaced until the transfer of this batch of slurry is completed. Step 6: Using the camera on the cover of the secondary hopper assembly, observe when the slurry reaches the set position in the secondary hopper. Then, open the secondary hopper discharge valve II to pour the shell to be poured in the vacuum casting chamber. Step 7: Observe whether the shell to be poured has been poured through the monitoring module on the top of the vacuum casting chamber. After the pouring is completed, close the material discharge valve II. Step 8: Open the hatch, use a forklift to transport the shell pallet to remove the completed shell, and place the new shell to be cast into the vacuum casting chamber until the casting production of this batch is completed; In step six, the camera is used to observe the process. When any one of the guide channels inside the secondary hopper is exposed, the discharge valve II below the corresponding guide channel is closed. In step five, after the primary hopper has finished feeding, the primary hopper is removed, and steps one, three, four, and five are repeated to continuously replenish the material until the current batch of casting production is completed. The casting device used in the vacuum casting method includes: a support platform, a secondary hopper assembly mounted above the support platform by multiple support rods I, a vacuum casting chamber mounted below the support platform and used to install the shell to be cast, a primary hopper assembly mounted on the cover of the secondary hopper assembly by multiple support rods II, and the discharge valve I is located at the discharge port I of the primary hopper assembly. The vacuum casting chamber has a door on one side for sealing the vacuum casting chamber. The shell to be cast is placed in the vacuum casting chamber through a shell tray. The discharge valve I is connected to the feed port of the secondary hopper assembly through a flange. The bottom of the secondary hopper assembly is provided with a discharge port II that is connected to the vacuum casting chamber. The discharge valve II is located at the discharge port II. The primary hopper assembly includes a primary hopper, and the secondary hopper assembly includes a secondary hopper. The inner side of the bottom center of the secondary hopper is provided with a semi-circular protrusion smaller than the bottom of the secondary hopper. Multiple guide channels are evenly distributed between the protrusion and the inner wall of the secondary hopper. The discharge port II at the bottom of each guide channel corresponds to the product to be poured.

2. The vacuum casting method for continuously castable slurry according to claim 1, characterized in that, In step four, turn on the external heating device to heat the secondary hopper and maintain the set temperature of the slurry inside the secondary hopper.

3. The vacuum casting method for continuously castable slurry according to claim 1, characterized in that, The upper surface of the primary hopper assembly is provided with a hook that cooperates with an external hoisting device.

4. The vacuum casting method for continuously castable slurry according to claim 1, characterized in that, The hatch is slidably connected to the vacuum casting chamber via a track assembly mounted on a support platform.

5. The vacuum casting method for continuously castable slurry according to claim 1, characterized in that, The casting device also includes: a monitoring module installed on the top of the inner side of the vacuum casting chamber for observing the status of the discharge port II; The monitoring module is connected to an external control terminal for communication.

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