A pouring hopper preventing vacuum breakdown and reducing slurry loss

Abstract

The utility model discloses a cast ladle that prevents vacuum breakdown and reduces slurry loss, including the hopper body, the lid body that cooperates with hopper body, is set up in the lid body and has the feed inlet, the feed inlet is communicated with the outside feeding equipment through the feed component, the inside of hopper body bottom center is provided with semicircular boss part, and the inside wall between boss part and hopper body is connected into integral structure through a plurality of conical structure's flow guide groove, and each flow guide groove bottom is set up and has the discharge gate, still include: set up on the lid body for the camera for observing the slurry of hopper interior, set up on each discharge gate and have the rubber tube valve, wherein, rubber tube valve, camera and the control terminal communication connection of outside. The utility model discloses through the semicircular boss part of hopper bottom center setting and the conical flow guide groove structure cooperation effect, make the slurry more easily flow to the discharge gate of all around under the action of gravity, under the premise of preventing the vacuum breakdown of the pouring cabin below cast ladle, and the slurry residual quantity is reduced significantly, and the utilization rate is improved.

Description

Technical Field

[0001] This utility model belongs to the field of solid propellant manufacturing technology, specifically relating to a casting hopper that prevents vacuum breakdown and reduces slurry loss. Background Technology

[0002] In the industrial production of vacuum casting in the chemical industry, particularly for solid propellants and weaponry, the design of the casting hopper directly impacts material utilization, production efficiency, and product quality. Traditional hoppers typically employ a single discharge port structure with a flat or sloping bottom. The connection between the flat bottom and the mold cavity easily creates a "dead zone," resulting in incomplete slurry discharge and high slurry waste. Existing flat-bottom hoppers, to accommodate the casting of numerous small products, often employ moving the hopper or rotating it to cast each product separately. This results in complex equipment structures, low production efficiency, and significant waste due to residual slurry. To ensure product casting quality, the casting chamber below the casting hopper must be kept in a vacuum state throughout the casting process. However, the different flow velocities at the various discharge ports at the bottom of the plane mean that once flow occurs at one port, the vacuum environment is disrupted, making it difficult for the remaining slurry in the hopper to be completely discharged from the bottom of the plane, resulting in a high slurry waste rate. A single inclined discharge port cannot meet the requirement of simultaneous filling of multiple cavities, while a symmetrically distributed inclined discharge port cannot achieve the requirement of uniform filling of each cavity, requiring multiple replenishments to meet the casting requirements. In addition, the existing hopper lacks a guiding structure for the slurry flow path, which can easily lead to turbulence or unstable flow velocity, affecting the product molding quality.

[0003] For example, patent application number 201822255559.5 discloses a small-diameter propellant column frame casting device. This device can realize the simultaneous casting of multiple engines. However, its single inclined surface discharge port makes it difficult to achieve simultaneous and uniform casting of multiple propellant columns. At the same time, during the casting process, the slurry is prone to form residue inside the hopper, resulting in a high slurry waste rate. In addition, if one of the discharge ports is open, it will disrupt the vacuum environment of the discharge and affect the discharge of slurry from other discharge ports. Utility Model Content

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages according to the present invention, a casting hopper that prevents vacuum breakdown and reduces slurry loss is provided, comprising a hopper body, a cover body that cooperates with the hopper body, the cover body having a feed inlet, the feed inlet being connected to an external feeding device through a feeding assembly, a semi-circular protrusion smaller than the bottom of the hopper body being provided on the inner side of the bottom center of the hopper body, the protrusion being connected to the inner side wall of the hopper body by a plurality of conical guide grooves forming an integral structure, each guide groove having a discharge port at its bottom, and further comprising: a camera mounted on the cover body for observing the slurry inside the hopper, and a hose valve mounted on each discharge port;

[0006] The hose valve and camera are connected to an external control terminal.

[0007] Preferably, the feed inlet assembly includes: a tapered connector detachably connected to the feed inlet;

[0008] A material leveling plate is installed between the feed inlet and the conical connector;

[0009] The tapered connector is provided with a flange for docking with an external feeding device.

[0010] Preferably, the hopper body is configured to have a multi-layered hollow structure to form an insulation layer between the layers.

[0011] Preferably, it also includes a vacuum port disposed on the cover and connected to an external vacuum device.

[0012] This utility model has at least the following beneficial effects: The semi-circular protrusion at the center of the bottom of the hopper works in conjunction with the conical guide channel structure, and multiple conical guide channels are of the same size and shape, making it easier for the slurry to flow to the discharge port around the perimeter under the action of gravity. At the same time, the camera is used to observe the remaining slurry inside the hopper. When the slurry in a certain guide channel is about to run out, the corresponding hose valve is closed to prevent the vacuum in the casting chamber below the casting hopper from being broken, the residual amount is significantly reduced, and the utilization rate of the slurry is high.

[0013] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached image description:

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the hopper body of this utility model;

[0016] Figure 3This is a schematic diagram of the structure of the cover of this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the cover of this utility model;

[0018] Figure 5 This is a schematic diagram of the uniform material plate structure of this utility model.

[0019] Reference numerals: 1. Hopper body, 2. Cover, 3. Protrusion, 4. Guide channel, 5. Discharge port, 6. Feed inlet, 7. Camera, 8. Hose valve, 9. Scale plate, 10. Insulation layer, 11. Vacuum port, 12. Conical connector. Detailed implementation method:

[0020] 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 terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do 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 this utility model, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Furthermore, in this utility model, 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 through an intermediate medium. Moreover, "above," "on top of," and "on top" can mean that the first feature is directly above or diagonally above the second feature, or simply 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 that the first feature is at a lower horizontal level than the second feature.

[0021] like Figures 1-5The diagram illustrates a casting hopper designed to prevent vacuum breakdown and reduce slurry loss. It includes a hopper body 1 and a cover 2 that mates with the hopper body 1. The cover has a feed inlet 6, which is connected to an external feeding device via a feeding assembly. The hopper body 1 has a semi-circular protrusion 3, smaller than the bottom of the hopper, located on the inner side of its bottom center. The protrusion 3 and the inner wall of the hopper body 1 are connected as a single unit by multiple conical guide channels 4. Each guide channel 4 has a discharge port 5 at its bottom. The hopper also includes a camera 7 mounted on the cover 2 for observing the slurry inside the hopper, and a hose valve 8 mounted on each discharge port 5.

[0022] The hose valve 8 and the camera 7 are connected to an external control terminal.

[0023] Working principle:

[0024] Before pouring, the slurry is injected into the hopper body 1 through the inlet assembly and inlet 6 on the cover 2. 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. The semi-circular protrusion 3 is located on the inner side of the center of the bottom of the hopper, and its structure guides the slurry to diffuse outwards. The slurry flows from the central protrusion 3 to multiple conical guide channels 4 around it. The shape of the conical guide channels 4 plays a natural guiding role; as the slurry flows, its cross-sectional area gradually decreases, accelerating the slurry and causing it to move to the bottom of the guide channels 4 more quickly. Multiple guide channels 4 are evenly distributed between the protrusion 3 and the inner wall of the hopper, evenly distributing the slurry to each guide channel 4, ensuring that multiple guide channels 4 are prepared for pouring simultaneously. The discharge port 5 at the bottom of each guide channel 4 corresponds to the product to be poured. Under the influence of gravity, the slurry, accelerated by the conical guide channel 4, flows rapidly out of the discharge port 5 to pour the product. Because multiple discharge ports 5 discharge simultaneously, and the slurry maintains uniformity during the diversion process, it can quickly and evenly fill the product, improving pouring efficiency and quality. In this invention, the semi-circular protrusion 3 and the conical guide channel 4 structure make it easier for the slurry to flow to the surrounding discharge ports 5 under gravity, significantly reducing residue and increasing slurry utilization. Simultaneously, the camera 7 can transmit real-time images of the remaining amount and flow status of the slurry in the hopper to the control terminal. When the slurry level in the hopper body 1 reaches a certain guide channel 4, the control terminal sends a signal to the corresponding control valve 8 to close the corresponding discharge port hose valve 8, preventing vacuum breakdown and ensuring that other pouring processes at the discharge ports 5 are not disturbed, maintaining the stability of the pouring process, and completing the material-saving pouring process one by one. It should also be noted that the hose valve is a commonly used device in this technical field, and its structure will not be described in detail here.

[0025] In the above technical solution, the feed inlet assembly includes a conical connector 12 detachably connected to the feed inlet 6; wherein a leveling plate 9 is provided between the feed inlet 6 and the conical connector 12, and the conical connector 12 is provided with a flange for docking with an external feed end. Using this technical solution, the conical connector 12 achieves quick connection with the feed inlet 6 via multiple bolts, and the flange on the conical connector 12 facilitates quick docking with the external feed end. Furthermore, the leveling plate 9 positioned between the feed inlet 6 and the conical connector 12 further optimizes the slurry injection process. The leveling plate 9 provides initial dispersion of the slurry entering the hopper, preventing slurry from concentrating in one area, thus avoiding excessively high local flow rates or uneven pressure. When the slurry is injected from the feed inlet 6, the leveling plate 9 changes the flow direction of the slurry, causing it to spread more evenly at the top of the hopper. This helps the subsequent slurry flow smoothly to the bottom under gravity, reducing feeding difficulties caused by slurry accumulation at the top. During the flow guiding and diversion stage, the slurry dispersed by the uniform material plate 9 can reach the semi-circular protrusion 3 more evenly, making the initial amount of slurry received by each conical flow guide trough 4 more uniform, further improving the diversion effect, and ensuring the consistency when multiple flow guide troughs 4 are prepared for pouring at the same time. The uniform material plate is evenly provided with multiple dispersion holes.

[0026] In the above technical solution, the hopper body 1 is configured with a multi-layer hollow structure to form a heat insulation layer 10 between each layer. Using this technical solution, the heat insulation layer 10 can stabilize the temperature inside the hopper. A stable temperature helps maintain the fluidity of the slurry, ensuring its smooth flow within the semi-circular protrusion 3 and the conical guide channel 4, and preventing an increase in viscosity due to temperature drop, which would affect the diversion effect.

[0027] The above technical solution also includes a vacuum port 11 installed on the cover 2 and connected to an external vacuum device. Using this solution, the vacuum port 11, during the feeding stage of the hopper body 1, reduces air resistance to slurry flow by creating a vacuum inside the hopper, resulting in smoother diffusion of the slurry around the semi-circular protrusion 3 and smoother accelerated flow in the conical guide channel 4. Without air interference, the uniformity of the slurry distribution to each guide channel 4 is greatly improved, and the slurry received by each guide channel 4 is more consistent in both quantity and flow rate, ensuring the accuracy of simultaneous pouring preparation in multiple guide channels 4.

[0028] Although the embodiments of this utility model 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 this utility model. 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, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A casting hopper for preventing vacuum breakdown and reducing slurry loss, comprising a hopper body, a cover body cooperating with the hopper body, wherein the cover body has a feed inlet, the feed inlet being connected to an external feeding device via a feeding assembly, characterized in that, The inner side of the bottom center of the hopper body is provided with a semi-circular protrusion smaller than the bottom of the hopper. The protrusion and the inner wall of the hopper body are connected to each other by multiple conical guide channels to form an integral structure. Each guide channel has a discharge port at the bottom. It also includes: a camera installed on the cover for observing the slurry inside the hopper, and hose valves installed on each discharge port; The hose valve and camera are connected to an external control terminal.

2. The casting hopper for preventing vacuum breakdown and reducing slurry loss according to claim 1, characterized in that, The feed inlet assembly includes: a tapered connector that is detachably connected to the feed inlet; A material leveling plate is installed between the feed inlet and the conical connector; The tapered connector is provided with a flange for docking with an external feeding device.

3. The casting hopper for preventing vacuum breakdown and reducing slurry loss according to claim 1, characterized in that, The hopper body is configured with a multi-layered hollow structure to form an insulation layer between the layers.

4. The casting hopper for preventing vacuum breakdown and reducing slurry loss according to claim 1, characterized in that, It also includes a vacuum port located on the cover and connected to an external vacuum pumping device.

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