Improved casting installation

Abstract

The utility model provides an improved casting pouring device relates to casting pouring technical field, including the shutter, the junction of shutter and pouring assembly is provided with high temperature resistance sealing sleeve, one end of high temperature resistance sealing sleeve is provided with the sealing barrier ring made of heat conducting material, the inside fixed mounting of sealing barrier ring is the fastening compression ring made of thermal expansion alloy. The utility model has the advantages of: the shutter surface of the flow control in the pouring assembly of casting pouring device is provided with the high temperature resistance sealing sleeve of sealing, and the sealing barrier ring of end face inclination is set between high temperature resistance sealing sleeve and sealing fastening seat fixed with it, the space of sealing is formed between the inclined plane of sealing barrier ring and sealing fastening seat, can form high pressure to sealing barrier ring under high temperature extrusion, enhances the stability and compactness of sealing barrier ring sealing, can effectively improve the stability of sealing structure, avoids the metal liquid leakage under high temperature.

Description

Technical Field

[0001] This utility model relates to the field of casting and pouring technology, and in particular to an improved casting and pouring device. Background Technology

[0002] In casting production, commonly used pouring devices typically control the flow rate of molten metal using gates or sliding baffles. Their sealing structures usually employ refractory materials or high-temperature resistant gaskets. Under prolonged exposure to high temperatures, these seals are prone to uneven thermal expansion, thermal erosion, or material fatigue, leading to increased sealing gaps and slight leaks or drips. This, in turn, affects the stability of the pouring flow and the cleanliness of the molten metal. Furthermore, the seals have a limited lifespan, requiring frequent maintenance or replacement, increasing equipment maintenance costs. Therefore, maintaining the stability and reliability of the sealing structure under high-temperature conditions remains a pressing issue requiring improvement. Utility Model Content

[0003] Therefore, the purpose of this utility model is to propose an improved casting and pouring device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0004] To achieve the above objectives, one embodiment of this utility model provides an improved casting pouring device, including a supporting base and a sand mold box for pouring and molding. A fixing frame for supporting and fixing a crucible (containing molten metal) is fixedly installed at one end of the base. A pouring assembly connected to the sand mold box is provided at the top of the base. A gate for controlling the flow rate of the molten metal is provided inside the pouring assembly. A high-temperature resistant sealing sleeve is provided at the connection between the gate and the pouring assembly to seal it. A sealing barrier ring made of thermally conductive material is provided at one end of the high-temperature resistant sealing sleeve. A fastening ring made of thermally expanding alloy is fixedly installed inside the sealing barrier ring. A sealing gasket is provided at the end of the sealing barrier ring near the high-temperature resistant sealing sleeve to seal and fasten it. A sealing fastening seat is fixedly installed at the other end of the sealing barrier ring to secure it.

[0005] A high-temperature resistant sealing sleeve is introduced at the flow control gate of the casting component, and a beveled sealing barrier ring is installed between the sealing sleeve and the sealing fastener. The beveled design generates combined radial and axial forces during assembly and heating, ensuring the sealing barrier ring maintains a stable fit even at high temperatures. This effectively reduces the risk of leakage due to thermal deformation and improves sealing reliability. A fastening ring made of a thermal expansion alloy is installed inside the sealing barrier ring. Utilizing the material's thermal expansion characteristics, it automatically compensates for the sealing gap at high temperatures, resulting in a tighter fit between the barrier ring and the gate. This further enhances the stability and lifespan of the sealing structure and reduces maintenance costs associated with frequent seal replacements.

[0006] Preferably, as described in any of the above embodiments, the base is provided with a weighing seat assembly for weighing the sand mold box, the sand mold box is placed on top of the weighing seat assembly, and one end of the base is provided with a support frame for supporting and fixing the casting assembly.

[0007] The above technical solution is adopted as follows: The metering seat assembly (including strain gauge pressure sensor) inside the base (Q235 steel welding) is fixed by bolts. The sand mold box (cast iron material) is placed on the top of the metering seat. The sensor detects the weight of the sand mold box and the molten metal inside in real time, converts the mechanical signal into an electrical signal and transmits it to the PLC control unit. The PLC presets the pouring weight threshold (calculated according to the casting volume). When the detected weight reaches the threshold, it immediately triggers the pouring assembly to stop pouring to avoid excessive molten metal causing the casting to overflow. The support frame (angle steel welding) at one end of the base is fixed to the ground by expansion bolts. The mounting groove at its top is fitted with the lifting and fixing seat of the pouring assembly to achieve precise positioning of the pouring assembly, ensuring that the pouring hopper is directly opposite the sand mold box pouring port and preventing the molten metal from shifting and leaking.

[0008] Preferably, in any of the above embodiments, the casting assembly includes a hydraulically driven lifting and fixing seat and a casting hopper for guiding the molten metal. The hydraulic system inside the lifting and fixing seat is connected to a PLC control unit. The lifting and fixing seat and the PLC control unit are fixedly installed inside the support frame. The casting hopper is fixedly installed at the top of the lifting and fixing seat and is located above the sand mold box.

[0009] The above technical solution is adopted: the lifting and fixing base of the casting component (aluminum alloy material, with built-in hydraulic cylinder) is connected to the PLC control unit through analog signal. The hydraulic system response time is ≤0.1s, which can drive the fixing base to lift and lower the casting hopper. Before casting, the PLC controls the hydraulic cylinder to extend according to the height parameter of the sand mold box, and lowers the casting hopper to a safe height of 50-100mm from the gate (to avoid splashing of molten metal). After casting, the cylinder retracts and drives the casting hopper to rise, which facilitates the transfer of the sand mold box. The casting hopper (heat-resistant steel material, polished inner wall) is fixed at the top of the lifting and fixing base, and its guide port is directly opposite the gate of the sand mold box. When the molten metal flows through the hopper, the polished inner wall reduces residue. The tilt design ensures the stability of the molten metal flow rate, laying the foundation for subsequent flow control.

[0010] Preferably, in any of the above embodiments, the gate includes a hydraulic telescopic rod connected to a PLC control unit and a flow baffle for controlling the flow of the pouring hopper. The hydraulic telescopic rod is fixedly installed inside the pouring hopper, and one end of the hydraulic telescopic rod is fixedly installed with a flow baffle that moves inside the pouring hopper.

[0011] The above technical solution is adopted as follows: the hydraulic telescopic rod (double-acting cylinder) of the gate is connected to the PLC control unit through pulse signals and fixed in the mounting hole on the side wall of the pouring hopper. The output end is connected to the flow baffle (made of heat-resistant alloy, with the working surface in contact with the inner wall of the pouring hopper) through a flange. During operation, the PLC adjusts the extension and retraction of the hydraulic telescopic rod according to the weight increase rate fed back by the metering seat assembly, thereby changing the opening of the flow baffle. When the weight increases too quickly, the telescopic rod pushes the baffle to increase the blocking area and reduce the flow. When the increase is too slow, the telescopic rod pulls the baffle to reduce the blocking area and increase the flow, thereby realizing closed-loop flow control. The heat-resistant material of the flow baffle can withstand the high temperature erosion of the molten metal, and the fit gap design prevents the molten metal from leaking from the gap between the baffle and the hopper wall.

[0012] Preferably, in any of the above embodiments, the high-temperature resistant sealing sleeve is fitted onto the surface of the flow baffle and fixedly installed with the casting hopper, the side of the sealing barrier ring near the high-temperature resistant sealing sleeve is configured with an inclined structure, the interior of the sealing barrier ring is provided with a fixing groove for fixing and fastening the pressure ring, and the sealing gasket is fixedly installed on the inclined end of the sealing barrier ring and fits against the high-temperature resistant sealing sleeve.

[0013] The above technical solution is adopted as follows: The high-temperature resistant sealing sleeve (ceramic fiber composite material) is fitted onto the surface of the flow baffle with high-temperature resistant adhesive and is interference-fitted with the inner wall of the casting hopper to form the first seal, preventing the molten metal from seeping into the gap between the baffle and the hopper wall. The sealing barrier ring (graphite-based thermally conductive material) has a 90° inclined structure on the side near the sealing sleeve, and a sealing gasket (flexible graphite material) is attached to the inclined end. The gasket is tightly fitted with the end face of the sealing sleeve to form the second seal. The fixing groove inside the barrier ring is interference-fitted with the fastening pressure ring. When the high temperature of the molten metal is transferred to the barrier ring, the fastening pressure ring expands due to heat, squeezing the inner wall of the barrier ring, so that the inclined end of the barrier ring is pressed towards the sealing sleeve, the gasket is further compressed, the sealing pressure is increased, and the thermal deformation of the sealing component under high temperature is compensated to avoid sealing failure.

[0014] Preferably, in any of the above embodiments, the sealing fastening seat is fitted around the sealing barrier ring and fits against the high-temperature resistant sealing sleeve, and high-pressure fastening rods penetrating the high-temperature resistant sealing sleeve are fixedly installed at both ends of the sealing fastening seat.

[0015] The above technical solution employs the following: a sealing fastening seat (made of stainless steel, with an inner diameter matching the outer diameter of the sealing barrier ring) is fitted around the barrier ring, its end face fitting against the high-temperature resistant sealing sleeve. High-pressure fastening rods (symmetrically distributed) at both ends penetrate the sealing sleeve and are pre-tightened with nuts. Before pouring, the PLC controls the high-pressure fastening rods to apply radial pressure to the barrier ring, ensuring initial contact between the barrier ring, sealing sleeve, and baffle. During pouring, the high temperature of the molten metal causes slight relaxation in the seal, and the fastening seat continuously transmits pressure to maintain sealing stability. The annular structure of the fastening seat ensures uniform pressure distribution, preventing leakage due to insufficient local pressure. Furthermore, its stainless steel material is resistant to high-temperature oxidation and adaptable to long-term pouring environments.

[0016] Preferably, in any of the above embodiments, the high-pressure fastening rod includes a high-pressure gas cylinder storing inert gas and a fastening rod for sealing it. The high-pressure gas cylinder is engaged inside the high-temperature resistant sealing sleeve. The fastening rod, which is fixedly installed with the sealing fastening seat, is movably connected inside the high-pressure gas cylinder. A high-temperature resistant sealing gasket is provided at one end of the fastening rod located inside the high-pressure gas cylinder to seal the high-pressure gas cylinder.

[0017] The above technical solution involves filling the high-pressure cylinder (made of stainless steel) of the high-pressure fastening rod with inert gas (nitrogen to prevent high-temperature oxidation). It is fitted into the mounting hole of the high-temperature resistant sealing sleeve via an interference fit. The fastening rod (made of stainless steel) at one end of the cylinder is welded to the sealing fastening seat. A high-temperature resistant sealing gasket (made of silicon nitride) is attached to the end of the rod inside the cylinder. Before pouring, high-pressure nitrogen is injected into the cylinder through an external inflation valve. The gas pushes the rod outward, causing the sealing fastening seat to press against the sealing barrier ring, increasing the contact pressure between the barrier ring and the sealing sleeve. During pouring, if the cylinder pressure drops due to deformation of the sealing components, the PLC controls the inflation valve to replenish the pressure and maintain stability. The high-temperature resistant sealing gasket effectively prevents nitrogen leakage and avoids metal-to-metal friction between the rod and the cylinder, ensuring long-term reliable operation of the fastening rod.

[0018] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0019] 1. A high-temperature resistant sealing sleeve is installed on the surface of the gate plate that controls the flow inside the casting component of the casting equipment to seal it. A sealing barrier ring with an inclined end face is installed between the high-temperature resistant sealing sleeve and the sealing fastener fixed thereto. The sealing space formed between the inclined surface of the sealing barrier ring and the sealing fastener can generate high pressure at high temperature to squeeze the sealing barrier ring, thereby enhancing the stability and tightness of the sealing barrier ring, and thus effectively improving the stability of the sealing structure and preventing the leakage of molten metal at high temperature.

[0020] 2. A heat-expanding fastening ring is installed inside the sealing barrier ring. It can expand at high temperature to compress the internal structure of the sealing barrier ring, making the fit between the sealing barrier ring and the gate more tight and further enhancing the stability of the sealing structure.

[0021] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;

[0024] Figure 2 This is a partial structural schematic diagram according to an embodiment of the present utility model;

[0025] Figure 3 This is a cross-sectional structural diagram of the casting hopper according to an embodiment of the present invention;

[0026] Figure 4 This is a cross-sectional structural diagram of the high-temperature resistant sealing sleeve according to an embodiment of the present utility model;

[0027] Figure 5 This is a cross-sectional structural diagram of the high-pressure fastening rod according to an embodiment of the present utility model;

[0028] Among them: 1-base, 2-sand mold box, 3-pouring component, 31-lifting fixed seat, 32-pouring hopper, 4-gate, 41-hydraulic telescopic rod, 42-flow baffle, 5-high temperature resistant sealing sleeve, 6-sealing barrier ring, 7-fastening pressure ring, 8-sealing gasket, 9-sealing fastening seat, 10-high pressure fastening rod, 101-high pressure air cylinder, 102-fastening air rod. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited to the following description.

[0030] like Figure 1-5As shown, an improved casting and pouring device according to an embodiment of the present invention includes a base 1 for support and a sand mold box 2 for pouring and molding. A fixing frame for supporting and fixing the crucible (containing molten metal) is fixedly installed at one end of the base 1. A pouring assembly 3 connected to the sand mold box 2 is provided at the top of the base 1. A gate 4 for controlling the flow of molten metal is provided inside the pouring assembly 3. A high-temperature resistant sealing sleeve 5 is provided at the connection between the gate 4 and the pouring assembly 3 to seal it. A sealing barrier ring 6 made of thermally conductive material is provided at one end of the high-temperature resistant sealing sleeve 5. A fastening pressure ring 7 made of thermal expansion alloy is fixedly installed inside the sealing barrier ring 6. A sealing gasket 8 is provided at the end of the sealing barrier ring 6 near the high-temperature resistant sealing sleeve 5 to seal and fasten it. A sealing fastening seat 9 is fixedly installed at the other end of the sealing barrier ring 6 to fix it.

[0031] Preferably, in any of the above schemes, the base 1 is provided with a weighing seat assembly for weighing the sand mold box 2, the sand mold box 2 is placed on top of the weighing seat assembly, and one end of the base 1 is provided with a support frame for supporting and fixing the casting assembly 3.

[0032] The above technical solution is adopted: the metering seat assembly (including 4 sets of strain gauge pressure sensors) inside the base 1 (Q235 steel welding) is fixed by bolts. The sand mold box 2 (cast iron material) is placed on the top of the metering seat. The sensors detect the weight of the sand mold box and the molten metal inside in real time, and convert the mechanical signal into an electrical signal and transmit it to the PLC control unit. The PLC presets the pouring weight threshold (calculated according to the volume of the casting). When the detected weight reaches the threshold, the pouring assembly 3 is immediately triggered to stop pouring to avoid excessive molten metal causing the casting to overflow. The support frame (angle steel welding) at one end of the base 1 is fixed to the ground by expansion bolts. The mounting groove at its top is fitted with the lifting and fixing seat 31 of the pouring assembly 3 to achieve precise positioning of the pouring assembly and ensure that the pouring hopper 32 is aligned with the sand mold box pouring port to prevent the molten metal from shifting and leaking.

[0033] Preferably, in any of the above embodiments, the casting assembly 3 includes a hydraulically driven lifting and fixing seat 31 and a casting hopper 32 for guiding the molten metal. The hydraulic system inside the lifting and fixing seat 31 is connected to a PLC control unit. The lifting and fixing seat 31 and the PLC control unit are fixedly installed inside the support frame. The casting hopper 32 is fixedly installed on the top of the lifting and fixing seat 31 and is located above the sand mold box 2.

[0034] The above technical solution is adopted: the lifting and fixing seat 31 of the casting component 3 (made of aluminum alloy with built-in hydraulic cylinder) is connected to the PLC control unit through analog signal. The hydraulic system response time is ≤0.1s, which can drive the fixing seat to lift and lower the casting hopper 32. Before casting, the PLC controls the hydraulic cylinder to extend according to the height parameter of the sand mold box 2, and lowers the casting hopper to a safe height of 50-100mm from the pouring gate (to avoid splashing of molten metal). After casting, the cylinder retracts and drives the casting hopper to rise, which facilitates the transfer of the sand mold box. The casting hopper 32 (made of heat-resistant steel with polished inner wall) is fixed at the top of the lifting and fixing seat, and its guide port is directly facing the pouring gate of the sand mold box. When the molten metal flows through the hopper, the polished inner wall reduces residue. The tilt design ensures the stability of the molten metal flow rate, laying the foundation for subsequent flow control.

[0035] Preferably, in any of the above schemes, the gate 4 includes a hydraulic telescopic rod 41 connected to the PLC control unit and a flow baffle 42 for controlling the flow of the pouring hopper 32. The hydraulic telescopic rod 41 is fixedly installed inside the pouring hopper 32, and one end of the hydraulic telescopic rod 41 is fixedly installed with the flow baffle 42 that moves inside the pouring hopper 32.

[0036] The above technical solution is adopted: the hydraulic telescopic rod 41 (double-acting cylinder) of the gate 4 is connected to the PLC control unit through pulse signals and fixed in the mounting hole on the side wall of the casting hopper 32. The output end is connected to the flow baffle 42 (made of heat-resistant alloy, with the working surface in contact with the inner wall of the casting hopper) through a flange. During operation, the PLC adjusts the extension and retraction of the hydraulic telescopic rod according to the weight increase rate fed back by the metering seat assembly, thereby changing the opening of the flow baffle. When the weight increases too quickly, the telescopic rod pushes the baffle to increase the blocking area and reduce the flow. When the increase is too slow, the telescopic rod pulls the baffle to reduce the blocking area and increase the flow, thereby realizing closed-loop flow control. The heat-resistant material of the flow baffle can withstand the high temperature erosion of the molten metal, and the fit gap design prevents the molten metal from leaking from the gap between the baffle and the hopper wall.

[0037] Preferably, in any of the above schemes, the high-temperature resistant sealing sleeve 5 is fitted onto the surface of the flow baffle 42 and fixedly installed with the casting hopper 32, the sealing barrier ring 6 is configured with a bevel structure on the side near the high-temperature resistant sealing sleeve 5, the sealing barrier ring 6 has a fixing groove for fixing the fastening pressure ring 7 inside, and the sealing gasket 8 is fixedly installed on the bevel end of the sealing barrier ring 6 and fits against the high-temperature resistant sealing sleeve 5.

[0038] The above technical solution is adopted: the high-temperature resistant sealing sleeve 5 (ceramic fiber composite material) is fitted onto the surface of the flow baffle 42 with high-temperature resistant adhesive and is interference-fitted with the inner wall of the casting hopper 32 to form the first seal, preventing the molten metal from seeping into the gap between the baffle and the hopper wall. The sealing barrier ring 6 (graphite-based thermally conductive material) has a 45° inclined structure on the side near the sealing sleeve, and a sealing gasket 8 (flexible graphite material) is attached to the inclined end. The gasket is tightly fitted with the end face of the sealing sleeve to form the second seal. The fixing groove inside the barrier ring is interference-fitted with the fastening pressure ring 7. When the high temperature of the molten metal is transferred to the barrier ring, the fastening pressure ring expands due to heat, squeezing the inner wall of the barrier ring, so that the inclined end of the barrier ring is pressed towards the sealing sleeve, the gasket is further compressed, the sealing pressure is increased, and the thermal deformation of the sealing component under high temperature is compensated to avoid sealing failure.

[0039] Preferably, in any of the above schemes, the sealing fastening seat 9 is fitted around the sealing barrier ring 6 and fits against the high-temperature resistant sealing sleeve 5, and high-pressure fastening rods 10 that penetrate the high-temperature resistant sealing sleeve 5 are fixedly installed at both ends of the sealing fastening seat 9.

[0040] The above technical solution employs the following: a sealing fastening seat 9 (made of stainless steel, with an inner diameter matching the outer diameter of the sealing barrier ring 6) is fitted around the barrier ring, its end face fitting against the high-temperature resistant sealing sleeve 5. High-pressure fastening rods 10 (four symmetrically distributed sets) at both ends penetrate the sealing sleeve and are pre-tightened with nuts. Before pouring, the PLC controls the high-pressure fastening rods 10 to apply pressure, causing the fastening seat to exert radial pressure on the barrier ring, ensuring initial contact between the barrier ring, sealing sleeve, and baffle. During pouring, the high temperature of the molten metal causes slight relaxation in the seal, and the fastening seat continuously transmits pressure to maintain sealing stability. The annular structure of the fastening seat ensures uniform pressure distribution, preventing leakage due to insufficient local pressure. Furthermore, its stainless steel material is resistant to high-temperature oxidation and adaptable to long-term pouring environments.

[0041] Preferably, in any of the above embodiments, the high-pressure fastening rod 10 includes a high-pressure air cylinder 101 storing inert gas and a fastening rod 102 sealing it. The high-pressure air cylinder 101 is engaged inside the high-temperature resistant sealing sleeve 5. The fastening rod 102, which is fixedly installed with the sealing fastening seat 9, is movably connected inside the high-pressure air cylinder 101. A high-temperature resistant sealing gasket is provided at one end of the fastening rod 102 inside the high-pressure air cylinder 101 to seal the high-pressure air cylinder 101.

[0042] The above technical solution is adopted as follows: the high-pressure cylinder 101 (stainless steel) of the high-pressure fastening rod 10 is filled with inert gas (nitrogen to prevent high-temperature oxidation). It is fitted into the mounting hole of the high-temperature resistant sealing sleeve 5 by interference fit. The fastening rod 102 (stainless steel) at one end of the cylinder is welded and fixed to the sealing fastening seat 9. The end of the rod inside the cylinder is pasted with a high-temperature resistant sealing gasket (silicon nitride). Before pouring, high-pressure nitrogen is injected into the cylinder through an external inflation valve. The gas pushes the rod outward and drives the sealing fastening seat 9 to press against the sealing barrier ring 6, thereby increasing the contact pressure between the barrier ring and the sealing sleeve. During the pouring process, if the cylinder pressure drops due to the deformation of the sealing component, the PLC controls the inflation valve to replenish the pressure and maintain stable pressure. The high-temperature resistant sealing gasket can effectively prevent nitrogen leakage and avoid metal-to-metal friction between the rod and the cylinder, ensuring the long-term reliable operation of the fastening rod.

[0043] The working principle of this improved casting and pouring device is as follows:

[0044] The sand mold box 2 is placed on the metering seat assembly at the top of the base 1. The PLC control unit first drives the hydraulic system of the lifting and fixing seat 31 in the pouring assembly 3 according to the height of the sand mold box, so as to drive the pouring hopper 32 down to a position 50-100mm away from the pouring gate of the sand mold box, ensuring that the guide port of the pouring hopper is directly opposite the pouring gate. Then, the molten metal is poured into the pouring hopper. According to the real-time weight of the sand mold box fed back by the metering seat assembly, the PLC controls the extension and retraction of the hydraulic telescopic rod 41 of the gate 4 to adjust the opening of the flow baffle 42 to stabilize the flow rate of the molten metal. During the pouring process, the high-temperature resistant sealing sleeve 5 is in contact with the flow baffle. The first seal is formed. The sealing barrier ring 6 is bonded to the sealing sleeve through the inclined end sealing gasket 8 to form the second seal. The internal fastening pressure ring 7 is heated and expands to squeeze the barrier ring, enhancing the tightness of the fit. Under the action of the high pressure fastening rod 10 (the high pressure air cylinder 101 is filled with nitrogen and pushes the fastening air rod 102), the sealing fastening seat 9 applies radial pressure to the barrier ring to compensate for thermal deformation and ensure the stability of the seal. When the weight detected by the metering seat reaches the preset threshold, the PLC immediately controls the hydraulic telescopic rod to push the flow baffle to close, and at the same time drives the lifting fixed seat to drive the pouring bucket to rise, completing the pouring.

[0045] Compared with the prior art, the present invention has the following advantages:

[0046] 1. A high-temperature resistant sealing sleeve 5 is installed on the surface of the gate 4 that controls the flow rate inside the casting component 3 of the casting equipment. A sealing barrier ring 6 with an inclined end face is installed between the high-temperature resistant sealing sleeve 5 and the sealing fastener 9 fixed thereto. The sealing space formed between the inclined surface of the sealing barrier ring 6 and the sealing fastener 9 can generate high pressure at high temperature to squeeze the sealing barrier ring 6, thereby enhancing the stability and tightness of the sealing of the sealing barrier ring 6, and thus effectively improving the stability of the sealing structure and preventing the leakage of molten metal at high temperature.

[0047] 2. A heat-expanding fastening ring 7 is provided inside the sealing barrier ring 6. It can expand at high temperature to compress the internal structure of the sealing barrier ring 6, making the fit between the sealing barrier ring 6 and the gate plate 4 tighter and further enhancing the stability of the sealing structure.

Claims

1. An improved casting pouring apparatus, comprising a support base (1) and a sand mold box (2) for pouring and molding, wherein a pouring assembly (3) connected to the sand mold box (2) is provided at the top of the base (1), characterized in that: The casting assembly (3) is provided with a gate (4) for controlling the flow of molten metal. A high-temperature resistant sealing sleeve (5) is provided at the connection between the gate (4) and the casting assembly (3). A sealing barrier ring (6) made of thermally conductive material is provided at one end of the high-temperature resistant sealing sleeve (5). A fastening ring (7) made of thermal expansion alloy is fixedly installed inside the sealing barrier ring (6). A sealing gasket (8) is provided at one end of the sealing barrier ring (6) near the high-temperature resistant sealing sleeve (5) for sealing and fastening. A sealing fastening seat (9) is fixedly installed at the other end of the sealing barrier ring (6) for fixing it.

2. The improved casting pouring apparatus as described in claim 1, characterized in that: The base (1) is equipped with a weighing seat assembly for weighing the sand mold box (2), the sand mold box (2) is placed on top of the weighing seat assembly, and a support frame for supporting and fixing the casting assembly (3) is provided at one end of the base (1).

3. An improved casting pouring apparatus as described in claim 2, characterized in that: The casting assembly (3) includes a hydraulically driven lifting and fixing seat (31) and a casting hopper (32) for guiding the molten metal. The hydraulic system inside the lifting and fixing seat (31) is connected to a PLC control unit. The lifting and fixing seat (31) and the PLC control unit are fixedly installed inside the support frame. The casting hopper (32) is fixedly installed on the top of the lifting and fixing seat (31). The casting hopper (32) is located above the sand mold box (2).

4. An improved casting pouring apparatus as described in claim 3, characterized in that: The gate (4) includes a hydraulic telescopic rod (41) connected to the PLC control unit and a flow baffle (42) for controlling the flow of the pouring hopper (32). The hydraulic telescopic rod (41) is fixedly installed inside the pouring hopper (32), and one end of the hydraulic telescopic rod (41) is fixedly installed with a flow baffle (42) that moves inside the pouring hopper (32).

5. An improved casting pouring apparatus as described in claim 4, characterized in that: The high-temperature resistant sealing sleeve (5) is fitted onto the surface of the flow baffle (42) and fixedly installed with the pouring hopper (32). The sealing barrier ring (6) is set with a sloping structure on the side near the high-temperature resistant sealing sleeve (5). The sealing barrier ring (6) has a fixing groove for fixing the fastening pressure ring (7) inside. The sealing gasket (8) is fixedly installed on the sloping end of the sealing barrier ring (6) and fits against the high-temperature resistant sealing sleeve (5).

6. An improved casting pouring apparatus as described in claim 5, characterized in that: The sealing fastening seat (9) fits around the sealing barrier ring (6) and is in contact with the high temperature resistant sealing sleeve (5). High pressure fastening rods (10) that penetrate the high temperature resistant sealing sleeve (5) are fixedly installed at both ends of the sealing fastening seat (9).

7. An improved casting pouring apparatus as described in claim 6, characterized in that: The high-pressure fastening rod (10) includes a high-pressure gas cylinder (101) for storing inert gas and a fastening rod (102) for sealing it. The high-pressure gas cylinder (101) is engaged inside the high-temperature resistant sealing sleeve (5). The high-pressure gas cylinder (101) is movably connected to the fastening rod (102) which is fixedly installed with the sealing fastening seat (9). One end of the fastening rod (102) located inside the high-pressure gas cylinder (101) is provided with a high-temperature resistant sealing gasket to seal the high-pressure gas cylinder (101).

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