Vacuum pouring method capable of continuously pouring slurry and pouring device thereof

Abstract

The invention discloses a vacuum pouring method capable of continuously pouring slurry and a pouring device of the vacuum pouring method. The vacuum pouring method comprises the following steps that firstly, slurry in a mixing pot is poured into a first-stage hopper through an external upender; secondly, a shell to be poured is placed in a pouring bin; thirdly, the first-stage hopper is hoisted to a cover body of the second-stage hopper; fourthly, the second-stage hopper and the pouring bin are vacuumized; 5, opening a discharging valve I for feeding, and replacing a first-stage hopper until the slurry of the batch is transferred; 6, a second discharging valve of the secondary hopper is opened, and 7, after pouring is completed, the second discharging valve is closed; and 8, a cabin door is opened, the shell to be poured is moved away, and a new shell to be poured is put into the pouring cabin until pouring production of the batch is completed. Through the arrangement of the replaceable first-stage hopper and the shell tray, and through cooperation with an external hoisting device and a forklift, rapid replacement of the first-stage hopper and the shell to be poured is achieved, continuous pouring is achieved, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of aerospace vacuum technology, and in particular to a vacuum pouring device and a pouring method capable of continuously pouring slurry. Background Art

[0002] In vacuum casting production in industries such as aerospace, weapons, and chemicals, the design of the casting equipment directly impacts production efficiency, material utilization, and product quality. Slurry mixing in these industries is a complex process requiring expensive and bulky equipment. Mixing and pouring are typically performed in separate workshops, separated by a certain distance (for safety reasons). Direct connection to the pouring process is not possible. In existing casting equipment, the shell to be cast is typically hoisted into the top of a vacuum casting chamber. The chamber lid is then closed, and a pouring hopper is installed on top of the chamber lid before vacuuming and pouring. After each batch of product is poured, the pouring process must be terminated, the hopper removed, the chamber lid opened, the product removed, and a new shell reloaded to prepare for the next pour. Once the slurry in the hopper is depleted, the pouring process must also be terminated and the hopper moved to a refill station for refilling, making continuous pouring impossible. At the same time, to accommodate the pouring of multiple small products, the pouring hopper is often moved, or a shell rotating device is provided to achieve separate pouring of each shell, resulting in low production efficiency. For example, Publication No. CN107570687A discloses a vacuum pouring device and pouring method for reducing the grain size of aluminum alloy castings. In this device, when the pot body needs to be refilled, the sealed box must be reopened and refilled. The pouring operation can only be carried out after the refilling is completed. During the refilling process, the pouring operation must be stopped, making continuous pouring impossible. Summary of the Invention

[0003] An object of the present invention is to solve at least the above problems and / or disadvantages and to provide at least the advantages which will be described hereinafter.

[0004] In order to achieve these objects and other advantages of the present invention, a vacuum casting method for continuously casting slurry is provided, comprising: Step 1: Pour the slurry in the mixing pot into the first-level hopper through an external dumper; Step 2: Use a forklift and a shell pallet to place the shell to be cast into the casting chamber.

[0005] Step 3: Hoist the first-stage hopper onto the cover of the second-stage hopper assembly; Step 4: Turn on the external vacuum device to vacuum the secondary hopper and pouring chamber respectively; Step 5: When the vacuum degree in step 4 reaches the predetermined value, open the discharge valve I, and the first hopper feeds the material into the second hopper. The first hopper can be replaced until the transfer of this batch of slurry is completed; Step 6: Observe through the camera on the cover of the secondary hopper assembly that when the slurry reaches the set position in the secondary hopper, open the secondary hopper discharge valve II to pour the shell to be poured in the vacuum pouring chamber; Step 7: Use the monitoring module on the top of the pouring chamber to observe whether the shell to be poured is completed. After pouring is completed, close the discharge valve II; Step 8: Open the cabin door, use a forklift to transport the shell pallet to remove the completed casting shell, and place the new shell to be cast into the casting cabin until the casting production of this batch is completed.

[0006] Preferably, in step six, observation is performed through a camera, and when any guide groove inside the secondary hopper is revealed, the discharge valve II below the corresponding guide groove is closed.

[0007] Preferably, in step five, after the first-stage hopper has finished feeding, the first-stage hopper is removed, and steps one, three, four, and five are repeated to continuously feed the material until the casting production of this batch 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 a set temperature.

[0009] A vacuum pouring device capable of continuously pouring slurry is used in the pouring method. The vacuum pouring device comprises: a support platform, a secondary hopper assembly arranged above the support platform via a plurality of support rods I, a vacuum pouring chamber arranged below the support platform and internally used for mounting a shell to be poured, and is characterized in that it further comprises: a primary hopper assembly arranged on a cover of the secondary hopper assembly via a plurality of support rods II, and the discharge valve I is arranged at the discharge port I of the primary hopper assembly; Among them, a hatch for closing the vacuum pouring cabin is opened on one side of the vacuum pouring cabin, the shell to be poured is placed in the cabin body of the vacuum pouring cabin through the shell tray, the discharge valve is connected to the feed port of the secondary hopper assembly through a flange, and the bottom of the secondary hopper assembly is provided with a discharge port II connected to the vacuum pouring cabin, and the discharge valve II is arranged at the discharge port II.

[0010] Preferably, the upper surface of the first-stage hopper assembly is provided with a hook that cooperates with an external lifting device.

[0011] Preferably, the cabin door is slidably connected to the vacuum casting cabin via a track assembly provided on the support platform.

[0012] Preferably, the first-stage hopper assembly includes: a support rod II provided on the cover of the second-stage hopper assembly, a first-stage hopper having a conical bottom structure provided on the support rod II, and a mounting plate for mounting a discharge valve provided in the middle of the support rod II at the position of the discharge port I of the first-stage hopper; Wherein, the hook is arranged on the upper surface of the first-level hopper.

[0013] Preferably, it further comprises: a monitoring module provided on the top of the inner side of the vacuum pouring chamber for observing the status of the discharge port II; Wherein, the monitoring module is communicatively connected with an external control terminal.

[0014] The present invention has at least the following beneficial effects: 1. The present invention provides a first-level hopper on a second-level hopper, and the first-level hopper can be quickly replaced by an external lifting device, so that the pouring chamber can be filled normally without stopping pouring; 2. The present invention adopts a side-opening door in the vacuum pouring chamber in conjunction with the shell pallet. The forklift can cyclically withdraw the poured products and then push the shell to be poured into the chamber, thereby realizing continuous pouring and improving production efficiency.

[0015] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure numerals: 1. Support platform, 2. Support rod I, 3. Secondary hopper assembly, 31. Secondary hopper, 32. Cover body, 33. Feed port, 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. Hatch door, 9. Shell tray, 10. Shell to be cast, 11. Monitoring module. DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below with reference to the accompanying drawings, so that those skilled in the art can implement the invention with reference to 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 orientations or positional relationships indicated by terms are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed or operate in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance. In the description of the present invention, unless otherwise expressly specified or limited, the terms "installed," "provided with," "sleeved / connected," and "connected" should be understood broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or internal communication between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances. Furthermore, in the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0019] A vacuum casting method for continuously casting slurry of the present invention comprises: Step 1: Pour the slurry in the mixing pot into the primary hopper 61 through an external dumper; Step 2: Use a forklift and a shell pallet 9 to place the shell 10 to be cast into the casting chamber.

[0020] Step 3: hoist the first-stage hopper 61 onto the cover 32 of the second-stage hopper assembly 3; Step 4: Turn on the external vacuum device to vacuum the secondary hopper 31 and the pouring chamber respectively; Step 5: When the vacuum degree in step 4 reaches the predetermined value, the discharge valve I7 is opened, and the first-stage hopper 61 feeds the material into the second-stage hopper 31. The first-stage hopper 61 can be replaced until the transfer of the current batch of slurry is completed; Step 6: Observe through the camera 391 on the cover 32 of the secondary hopper assembly 3 that when the slurry reaches the set position in the secondary hopper, open the secondary hopper discharge valve II 39 to pour the shell 10 to be poured in the vacuum pouring chamber 4; Step 7: Observe whether the casting of the shell 10 to be cast is completed through the monitoring module 11 on the top of the casting chamber. After the casting is completed, close the discharge valve II 39; Step eight, open the cabin door 8, use a forklift to transport the shell pallet 9 to move the completed casting shell out, and place the new shell 10 to be cast into the casting cabin until the casting production of this batch is completed.

[0021] Working principle: Step 1: During the pouring preparation, start the external material turning machine to pour the slurry in the mixing pot into the first-stage hopper 61. When the first-stage hopper 61 is full, the rotary material turning machine stops unloading. Step 2: Place the shell 10 to be cast on the shell pallet 9, and use a forklift to put the shell pallet 9 into the casting chamber, and align the pouring port of each shell 10 to be cast with the discharge port II 38 in space; Step 3: The external lifting device connects with the hook 64 on the first-stage hopper 61, lifts the first-stage hopper 61 to the top of the second-stage hopper 31, and the first-stage hopper 61 descends by its own weight. The conical connector 34 above the second-stage hopper 31 opens the discharge valve I7 and locks it tightly. Then the lifting device is separated from the first-stage hopper 61. Step 4: Turn on the external vacuum device to vacuum the secondary hopper 31 and the pouring chamber to a vacuum degree of less than 1.07 kPa; Step 5: When the vacuum degree in step 4 is less than 1.07 kPa, open the discharge valve I7, and the first-stage hopper 61 feeds the second-stage hopper 31. Observe the downstream state of the slurry to control the opening of the discharge valve I7. The flow rate of each discharge port I62 is controlled at 13g-15g / min. Step 6: When the camera 391 on the cover 32 of the secondary hopper assembly 3 observes that the guide groove inside the secondary hopper 31 is completely submerged or the slurry inside the secondary hopper 31 accounts for one-quarter, the secondary hopper discharge valve II 39 is opened to pour the shell 10 to be poured in the vacuum pouring chamber 4; Step 7: Observe whether the casting of the shell 10 to be cast is completed through the monitoring module 11 on the top of the casting chamber. After the casting is completed, close the discharge valve II 39; Step eight, open the cabin door 8, use a forklift to transport the shell pallet 9 to move the completed casting shell out, and place the new shell 10 to be cast into the casting cabin until the casting production of this batch is completed.

[0022] In the above process, when the hatch 8 is opened in step eight, the pouring chamber needs to be deflated. The deflation of the pouring chamber is divided into two stages. In the first stage, the air pressure inside the vacuum chamber is greater than 1.07 kPa and less than 80 kPa, and the deflation time is 8 minutes. In the second stage, the air pressure inside the vacuum chamber is greater than 80 kPa until it is deflated to normal pressure, and the deflation time is 4 minutes. The two-stage deflation can avoid splashing during the production of energetic materials and avoid safety accidents during production. In step 6, during the unloading process of the secondary hopper 31, when the camera 391 observes that the guide groove of the secondary hopper 31 is exposed, the unloading valve II 39 below the corresponding guide groove is closed to prevent the interior of the secondary hopper 31 from being directly connected to the pouring chamber, thereby preventing the vacuum state from being broken, and simultaneously completing the pouring of the shells 10 to be poured one by one; In step 5, after the first-stage hopper 61 has finished feeding, the first-stage hopper 61 is removed and steps 1, 3, 4 and 5 are repeated to continuously feed the material until the batch casting production is completed, thus realizing continuous feeding in the production process. At the same time, in step 4, during the vacuuming process of the secondary hopper 31, the external heating device is turned on. The heating device keeps the temperature of the slurry inside the secondary hopper 31 at 50°C by supplying hot water into the shell of the secondary hopper 31 for insulation.

[0023] A vacuum pouring device capable of continuously pouring slurry, applied to the pouring method, comprising: a support platform 1, a secondary hopper assembly 3 arranged above the support platform 1 via a plurality of support rods I2, a vacuum pouring chamber 4 arranged below the support platform 1 and internally for mounting a shell 10 to be poured, characterized in that it further comprises: a primary hopper assembly 6 arranged on a cover 32 of the secondary hopper assembly 3 via a plurality of support rods II5, the discharge valve I7 being arranged at a discharge port I62 of the primary hopper assembly 6; Among them, a hatch 8 for closing the vacuum pouring cabin 4 is opened on one side of the vacuum pouring cabin 4, the shell 10 to be poured is placed in the cabin body of the vacuum pouring cabin 4 through the shell tray 9, the discharge valve is connected to the feed port 33 of the secondary hopper assembly 3 through a flange, and the bottom of the secondary hopper assembly 3 is provided with a discharge port II 38 connected to the vacuum pouring cabin 4, and the discharge valve II 39 is arranged at the discharge port II 38.

[0024] Working principle: The primary hopper assembly 6 is positioned on the lid 32 of the secondary hopper assembly 3 via a plurality of support rods II5. A discharge valve I7 is provided at the discharge port I62 of the primary hopper assembly 6. This valve I7 is connected to the feed port 33 of the secondary hopper assembly 3 via a flange. When feeding the secondary hopper assembly 3, the discharge valve I7 at the discharge port I62 of the primary hopper assembly 6 is opened. Under the influence of gravity and pressure differential (when the secondary hopper 31 is in a 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 as a temporary storage and buffer for the slurry, allowing it to more stably enter the vacuum pouring chamber 4. A casting shell 10 is installed within the vacuum pouring chamber 4. Prior to pouring, the vacuum pouring chamber 4 is evacuated to remove air from the chamber to prevent bubbles from forming or air-related reactions during the pouring process, 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 pouring chamber 4 from the secondary hopper assembly 3 through the discharge port II38 and flows into the shell 10 to be poured, completing the pouring process of the shell.

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

[0026] Before pouring, the tray containing the shells is transported to a position set in the vacuum pouring chamber 4 via a transfer device. After pouring a group of products, the vacuum in the pouring chamber is broken, and the products and the trays are quickly transported out of the pouring chamber and transported to the next group of shells. The pouring chamber is vacuumed again, and the discharge valve II39 of the discharge port II38 is opened to continue pouring. This cycle continues until the entire batch of products has been poured.

[0027] The upper surface of the first-level hopper assembly 6 is provided with a hook 64 that cooperates with an external lifting device. The cooperation between the external lifting device and the hook 64 enables the first-level hopper assembly 6 to be quickly replaced. When casting large products, which require multiple buckets of slurry, the first-level hopper 61 is used up and the slurry is discharged, and the discharge valve Ⅰ7 is closed. The first-level hopper assembly 6 is lifted away by the external lifting device and transported to the refilling position. At this time, the second-level hopper 31 does not need to stop pouring. By replacing a new first-level hopper assembly 6 filled with slurry, or refilling the previous first-level hopper assembly 6, continuous feeding is formed, and this cycle is followed by continuous pouring until the shell is filled. This avoids interruptions in pouring and speeds up 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 pouring cabin through a track assembly arranged on the support platform 1. Using this technical solution, the track assembly includes: guide rails arranged in pairs on the vacuum pouring cabin 4, and the hatch 8 is slidably arranged in the guide rails by a driving motor. The setting of the guide rails provides precise guidance for the movement of the hatch 8, so that the hatch 8 can slide smoothly along a predetermined path during the opening and closing process, avoiding the sealing effect affected by shaking or offset, thereby ensuring the vacuum stability of the vacuum pouring cabin 4 during operation. The application of the drive motor greatly improves the degree of automation of the operation of the hatch 8. The operator can easily realize the rapid opening or closing of the hatch by simply controlling the drive motor, without consuming a lot of manpower, which significantly improves work efficiency.

[0029] In the above technical solution, the first-stage hopper assembly 6 includes: a support rod II5 provided on the cover 32 of the second-stage hopper assembly 3, a first-stage hopper 61 with a conical bottom structure is provided on the support rod II5, and a mounting plate 63 for mounting a discharge valve I7 is provided in the middle of the support rod II5 at the position of the discharge port I62 of the first-stage hopper 61; The hook 64 is mounted on the upper surface of the primary hopper 61. This technical solution allows the tapered inner wall to continuously guide the slurry toward the center, allowing it to flow faster and more concentratedly toward the bottom discharge port I 62. This structural design significantly reduces slurry adhesion and residue on the hopper walls, 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 helps ensure a stable and continuous slurry supply during the casting process. A mounting plate 63 is provided at a position corresponding to the discharge port Ⅰ62 in the middle of the support rod Ⅱ5 for installing the discharge valve Ⅰ7, thereby ensuring the stability of the installation of the discharge valve Ⅰ7, and a hook 64 is provided on the upper surface of the first-level hopper 61. When the first-level hopper 61 needs to be replenished or replaced, the external lifting equipment can be quickly connected to the first-level hopper through the hook 64 to realize the rapid replacement of the first-level hopper; wherein, the secondary hopper assembly 3 includes: a secondary hopper 31, a cover body 32 cooperating with the secondary hopper 31, a feed port 33 is provided on the cover body 32, and a semicircular protrusion 35 with a size smaller than the bottom of the secondary hopper 31 is provided on the inner side of the bottom center of the secondary hopper 31, and the protrusion 35 and the inner side wall of the secondary hopper 31 are connected to form an integrated structure through a plurality of conical cavities 37; wherein, the discharge port Ⅱ38 is provided at the bottom of each cavity 37. The system 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 camera 391 are communicatively connected to an external control terminal. The feed port 33 is provided with a conical connector 34 that mates with the discharge valve I7. The conical connector 34 and discharge valve I7 are connected via a flange. Slurry is injected into the secondary hopper 31 through the feed port 33 and conical connector 34 on the cover 32. Due to the large headroom at the top of the hopper, it can quickly accommodate large quantities of slurry, reserving material for subsequent casting processes. At this point, the slurry flows to the bottom of the hopper under the action of gravity. A semicircular raised portion 35 is located on the inner center of the bottom of the secondary hopper 31. Its structure guides the slurry to diffuse in all directions. The slurry flows from the central raised portion 35 to the surrounding, multiple conical diversion troughs. The shape of the conical guide groove plays a natural diversion role. As the slurry flows, its cross-sectional area gradually becomes smaller, which has an acceleration effect on the slurry, causing the slurry to move faster to the bottom of the guide groove. Multiple guide grooves are evenly distributed between the protrusion 35 and the inner wall of the hopper, and the slurry is evenly diverted to each guide groove, ensuring that multiple guide grooves are prepared for casting at the same time. The discharge port II38 at the bottom of each guide groove corresponds to the product to be cast. Under the action of the slurry's own gravity, the slurry accelerated by the conical guide groove flows out quickly from the discharge port II38 to cast the product. Since multiple discharge ports II38 discharge materials at the same time, and the slurry maintains uniformity during the diversion process, it can fill the product quickly and evenly, improving the casting efficiency and quality.In the present invention, through the semicircular protrusion 35 and the conical guide groove structure, the slurry is more likely to flow to the surrounding discharge port Ⅱ38 under the action of gravity, the residual amount is significantly reduced, and the utilization rate of the slurry is high. At the same time, the camera 391 can transmit the remaining amount of slurry in the hopper, the flow state and other images to the control terminal in real time. When the slurry level of the hopper body presents a certain guide groove, the control terminal sends a signal to the corresponding control valve to close the discharge valve Ⅱ39 corresponding to the discharge port Ⅱ38 to prevent the vacuum state inside the secondary hopper 31 from being broken through. At the same time, it ensures that other pouring processes at the discharge port Ⅱ38 are not disturbed, maintains the stability of the pouring process, and executes the material-saving pouring one by one. It should also be noted that the discharge valve Ⅱ39 is a commonly used device in this technical field, and its structure will not be described in detail here.

[0030] The cover 32 is provided with a vacuum port 392 connected to an external vacuum pump. By evacuating the interior of the secondary hopper 31, air resistance to the slurry flow is reduced, allowing the slurry to diffuse around the semicircular protrusion 35 and accelerate in the tapered guide grooves more smoothly. Without air interference, the uniformity of the slurry flow to each guide groove is greatly improved.

[0031] The above technical solution also includes: a monitoring module 11 disposed at the top of the inner side of the vacuum pouring chamber 4 for observing the status of the discharge port II 38; wherein the monitoring module 11 is in communication with an external control terminal. Using this technical solution, the monitoring module 11 includes: a camera assembly and a light source. The light source is used to provide supplemental lighting for the camera assembly within the vacuum pouring chamber 4. Because during the discharge process, the vacuum pouring chamber 4 is in a closed state and the interior is in a dark environment, the supplemental lighting from the light source allows the camera assembly to monitor in real time whether the shell 10 to be poured has been completed, and also provides real-time, intuitive status information on the discharge port II 38. When the shell to be poured is completed, the control terminal sends a signal to the discharge valve II 39 at the discharge port II 38, which closes and stops the discharge of slurry. The camera component inside the vacuum pouring chamber 4 and the camera 391 on the secondary hopper 31 have different functions. The camera component inside the vacuum pouring chamber 4 monitors the pouring status of the shell to be poured, and then controls the discharge valve II39 to realize the pouring of the shell, while the camera 391 on the secondary hopper 31 monitors whether the guide groove inside the secondary hopper 31 is exposed. Once exposed, the discharge valve II39 is closed through the control end to prevent the discharge port II38 of the secondary hopper 31 from being connected to the vacuum pouring chamber 4, and the vacuum state is prevented from being destroyed.

[0032] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A vacuum casting method for continuous casting of slurry, characterized in that: include: Step 1: Pour the slurry in the mixing pot into the first-level hopper through an external dumper; Step 2: Place the shell to be cast into the casting chamber using a forklift and a shell pallet; Step 3: Hoist the first-stage hopper onto the cover of the second-stage hopper assembly; Step 4: Turn on the external vacuum device to vacuum the secondary hopper and pouring chamber respectively; Step 5: When the vacuum degree in step 4 reaches the predetermined value, open the discharge valve I, and the first hopper feeds the material into the second hopper. The first hopper can be replaced until the transfer of this batch of slurry is completed; Step 6: Observe through the camera on the cover of the secondary hopper assembly that when the slurry reaches the set position in the secondary hopper, open the secondary hopper discharge valve II to pour the shell to be poured in the vacuum pouring chamber; Step 7: Use the monitoring module on the top of the pouring chamber to observe whether the shell to be poured is completed. After pouring is completed, close the discharge valve II; Step 8: Open the cabin door, use a forklift to transport the shell pallet to remove the completed casting shell, and place the new shell to be cast into the casting cabin until the casting production of this batch is completed.

2. The vacuum casting method for continuously casting slurry according to claim 1, characterized in that: In step six, observe through the camera, and when any guide groove inside the secondary hopper is exposed, close the discharge valve II below the corresponding guide groove.

3. The vacuum casting method for continuously casting slurry according to claim 1, characterized in that: In step five, after the first-level hopper has finished feeding, the first-level hopper is removed and steps one, three, four and five are repeated to continuously feed the material until the casting production of this batch is completed.

4. The vacuum casting method for continuously casting slurry according to claim 1, characterized in that: In step 4, the external heating device is turned on to heat the secondary hopper so that the slurry inside the secondary hopper maintains the set temperature.

5. A pouring device, used in the pouring method according to any one of claims 1 to 4, characterized in that: The vacuum pouring device comprises: a support platform, a secondary hopper assembly arranged above the support platform via a plurality of support rods I, a vacuum pouring chamber arranged below the support platform and internally used for mounting a shell to be poured, and is characterized in that it further comprises: a primary hopper assembly arranged on a cover of the secondary hopper assembly via a plurality of support rods II, and the discharge valve I is arranged at the discharge port I of the primary hopper assembly; Among them, a hatch for closing the vacuum pouring cabin is opened on one side of the vacuum pouring cabin, the shell to be poured is placed in the cabin body of the vacuum pouring cabin through the shell tray, the discharge valve I is connected to the feed port of the secondary hopper assembly through a flange, and the bottom of the secondary hopper assembly is provided with a discharge port II connected to the vacuum pouring cabin, and the discharge valve II is arranged at the discharge port II.

6. The pouring device according to claim 5, characterized in that The upper surface of the first-level hopper assembly is provided with a hook that matches the external lifting device.

7. The pouring device according to claim 5, characterized in that The cabin door is slidably connected to the vacuum casting cabin via a track assembly arranged on the supporting platform.

8. The pouring device according to claim 6, characterized in that The first-stage hopper assembly includes: a support rod II provided on the cover of the second-stage hopper assembly, a first-stage hopper with a conical bottom structure provided on the support rod II, and a mounting plate for mounting a discharge valve provided in the middle of the support rod II at the position of the discharge port I of the first-stage hopper; Wherein, the hook is arranged on the upper surface of the first-level hopper.

9. The pouring device according to claim 5, characterized in that Also includes: A monitoring module installed on the top of the inner side of the vacuum pouring chamber to observe the status of the discharge port II; Wherein, the monitoring module is communicatively connected with an external control terminal.

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