Prefabricated furnace cover pouring device

Abstract

The invention belongs to the field of pouring equipment, and discloses a prefabricated furnace cover pouring device which comprises a stirring kettle, a power assembly arranged at one end of the stirring kettle and a filler assembly arranged below the stirring kettle, a supporting seat is arranged below the power assembly, and a supporting frame is arranged at the end, away from the power assembly, of the stirring kettle. The bottom of the supporting frame is upwards provided with a mold inlet-outlet groove. The industrial pain points that refractory material pouring equipment is poor in universality, uneven in material injection, high in hanging material loss and the like are effectively solved. A water injection tank arranged in the stirring rod is combined with a spiral stirring blade, so that the raw material mixing uniformity is improved, and the hanging loss is reduced; the modular detachable design greatly reduces the maintenance cost, the wear-resistant and anti-skid mold inlet and outlet grooves are suitable for production of products of multiple specifications, and the universality of the equipment is remarkably improved. The method is suitable for large-scale and fine production of prefabricated furnace covers in the refractory material industry, and can be widely applied to furnace cover prefabricating operation of industrial kilns such as metallurgical steelmaking furnaces, rotary cement kilns and glass melting furnaces.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of pouring equipment, and relates to a pouring device, in particular to a precast furnace cover pouring device. BACKGROUND

[0002] In the field of refractory production, the performance of pouring equipment directly determines the product quality, production efficiency and cost control level. However, the current market refractory pouring equipment generally has the problems of poor universality, uneven pouring, and stirring parts prone to material sticking, which seriously restricts the development of the industry.

[0003] Refractory materials are diverse, covering high alumina, silica, magnesia, etc., and the product forms are various, from large precast pieces for industrial kiln to small special-shaped pieces for the metallurgical industry. Different products differ greatly in shape, size, and raw material ratio. However, the existing pouring equipment is mostly customized for specific products, with fixed equipment parameters and structure, making it difficult to adapt to diversified production needs. For example, if the pouring equipment for producing magnesium-carbon bricks for steelmaking converter is to be converted to produce high-alumina castable precast pieces for cement kiln, not only the mold needs to be replaced, but also the core components such as pouring head and vibration device need to be modified, and even the stirring speed and stirring time of the stirring system need to be adjusted. This equipment modification process often takes several weeks, during which the equipment is idle, and the enterprise cannot undertake other orders, resulting in huge losses. For refractory enterprises that mainly deal with small batch and multi-species orders, the poor universality of the pouring equipment severely limits their order-taking ability, making it difficult for them to quickly respond to market changes and miss business opportunities.

[0004] During the pouring process of refractory materials, the uniformity of pouring directly affects the density, strength and corrosion resistance of the product. However, due to design defects and outdated control technology, the existing pouring equipment often has uneven pouring. For example, in gravity pouring equipment, the shape and size of the pouring port are not reasonably designed, which can cause the flow speed of refractory slurry in the mold to be inconsistent, resulting in local accumulation or incomplete filling. In the production of large refractory precast pieces, such uneven pouring can cause large internal density differences in the product, leading to cracks due to inconsistent thermal expansion during high-temperature use, reducing the service life. In the pouring construction of unshaped refractory materials, uneven pouring can cause the structure of the construction body to be loose, and under high-temperature and high-speed airflow erosion, it is prone to spalling and erosion. In the pouring construction of glass kiln, uneven pouring can reduce the thermal shock resistance of the kiln lining, shorten the service life of the kiln, and increase the maintenance cost of the enterprise.

[0005] Refractory raw materials are mostly high-hardness, high-viscosity materials, such as corundum and silicon carbide, which easily adhere to the surface of the mixing components during the mixing process, forming a buildup of material. As this buildup accumulates, the effective volume of the mixing chamber decreases, resulting in insufficient material being mixed. To ensure product specifications, companies are forced to increase the amount of raw materials input, leading to material waste. Statistics show that some refractory material companies experience annual raw material losses of 5%-8% due to material buildup in the mixing components.

[0006] Material buildup can also accelerate wear on the mixing components, shortening the equipment's lifespan. For example, mixing blades, which normally last 2-3 years, can have their lifespan reduced to 1-1.5 years due to abnormal wear caused by material buildup. This necessitates frequent blade replacements, increasing equipment maintenance costs. Furthermore, cleaning up the buildup requires periodic shutdowns, each taking 2-3 hours, severely impacting production efficiency and increasing time costs.

[0007] In summary, problems such as poor versatility, uneven material injection, and easy material buildup on mixing components have become bottlenecks restricting the development of the refractory materials industry. Summary of the Invention

[0008] To address the aforementioned shortcomings in the existing technology, this invention aims to provide a precast furnace cover casting device to improve equipment versatility, ensure uniform material injection, and reduce material loss from mixing components.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is as follows: A precast furnace cover casting device includes a mixing vessel, a power assembly at one end of the mixing vessel, a packing assembly below the mixing vessel, a support base below the power assembly, and a support frame at the end of the mixing vessel away from the power assembly. A mold inlet / outlet groove is formed at the bottom of the support frame. To ensure smooth mold entry and exit, the width of the mold inlet / outlet groove is 5-10 cm wider than the maximum outer diameter of the precast furnace cover mold, and the groove wall is coated with a wear-resistant and anti-slip coating.

[0010] As a limitation of this invention, a stirring element is provided inside the stirring vessel, including a stirring rod and stirring blades. One end of the stirring rod is movably inserted through one side wall of the stirring vessel, and the other end away from the side wall of the stirring vessel has a water injection groove. The depth of the water injection groove does not exceed the side wall through which the stirring rod is movably inserted. A delivery pipe is fixedly inserted through the other side of the stirring vessel away from the side wall through which the stirring rod is movably inserted. One end of the delivery pipe enters the stirring vessel and is inserted into the water injection groove on the stirring rod, and the end of the delivery pipe does not abut against the bottom of the water injection groove. The distance between the two is maintained at 2-5 mm to prevent blockage of the delivery pipe. A spiral stirring blade is fixedly wound around the outer wall of the stirring rod inside the stirring vessel. To ensure the connection strength between the spiral stirring blade and the stirring rod, the spiral stirring blade and the stirring rod are connected by a double fixing method of welding and bolts, and the weld is treated with rust prevention.

[0011] As a further limitation of the present invention, the portion of the stirring rod with the water inlet groove is evenly provided with multiple water outlet holes, each water outlet hole being located at the fixed connection between the stirring rod and the spiral stirring blades wound around its outer wall. The diameter of the water outlet hole is 3-5 mm, and the spacing between adjacent water outlet holes is 8-12 cm, ensuring that the liquid is evenly dispersed in the stirred refractory material.

[0012] As a further limitation of the present invention, a power assembly is fixedly installed at the end of the stirring rod outside the mixing vessel. The power assembly includes a power motor, a first drive shaft is fixedly installed at the power output end of the power motor, and a power bevel gear is fixedly installed at the other end of the first drive shaft away from the power motor. The end of the power bevel gear away from the first drive shaft is fixedly connected to the end of the stirring rod outside the mixing vessel. A support base is fixedly installed at the bottom of the power motor. To prevent deviation during power transmission, the first drive shaft is connected to the output end of the power motor and the power bevel gear by a key, and a locating pin is provided for axial fixation. A shock-absorbing rubber pad is provided at the bottom of the support base to reduce vibration and noise during the operation of the power motor.

[0013] As another limitation of the present invention, a packing assembly is provided below the mixing tank. The packing assembly includes a casting main pipe, and at least three rows of casting branch pipes are arranged along the length of the casting main pipe at its bottom. A first conveying pipe is connected to the top of the casting main pipe, and a rotating component is sleeved on the end of the first conveying pipe away from the casting main pipe. The diameter of the casting branch pipes gradually decreases from near the middle of the casting main pipe to both ends to ensure uniform distribution of the casting material. Adjacent rows of casting branch pipes are arranged alternately, covering the entire casting area of ​​the precast furnace cover mold.

[0014] As a further limitation of the present invention, the rotating assembly includes a rotating inner sleeve fixedly connected to the end of the first material conveying manifold away from the casting manifold. The outer surface of the rotating inner sleeve is uniformly provided with a plurality of rotating bead grooves, each groove containing a rotating bead. An outer rotating outer sleeve is fitted over the inner sleeve, and the inner surface of the outer sleeve has a rotating groove that engages with the rotating bead. Both the rotating bead groove and the rotating groove have arc-shaped cross-sections, and the diameter of the rotating bead matches the groove to ensure flexible rotation. A sealing ring is provided between the outer rotating outer sleeve and the inner rotating inner sleeve to prevent leakage of the casting material.

[0015] As a further limitation of the present invention, a second feed pipe is fixedly provided on the top of the rotating ring outer sleeve, and the other end of the second feed pipe away from the rotating ring outer sleeve is connected to the mixing vessel. The second feed pipe is connected to the rotating ring outer sleeve and the mixing vessel through flanges, which facilitates disassembly and maintenance.

[0016] As a further limitation of the present invention, the second conveying pipe is equipped with a pneumatic valve. The pneumatic valve is equipped with a manual emergency switch, which can be used to control the opening and closing of the valve in case of a failure of the pneumatic system, ensuring the safe operation of the equipment; at the same time, a pressure sensor is installed next to the pneumatic valve to monitor the conveying pressure in real time, ensuring the stability of the pouring process.

[0017] As a third limitation of the present invention, a limiting rod is fixedly provided on the side of the support base facing the mixing vessel. A retaining ring is provided at the end of the limiting rod away from the end fixed to the support base. A groove is formed on the inner sidewall of the retaining ring along the circumference of the retaining ring. A second drive shaft with a slider that matches the groove is movably arranged inside the retaining ring. A driven bevel gear is fixedly provided at the top of the second drive shaft, and a power rotating ring is fixedly provided at the bottom of the second drive shaft. The driven bevel gear and the power bevel gear have the same module, a pressure angle of 20°, and a center distance between them is the sum of the pitch circle radii of the two gears to ensure smooth power transmission. The groove depth of the retaining ring is 8-12mm, the height of the slider is adapted to the groove depth, and a self-lubricating bushing is provided between the slider and the groove to reduce frictional resistance.

[0018] As a further limitation of the present invention, the power rotating ring and the outer sleeve of the rotating ring are on the same horizontal plane, and the outer walls of the power rotating ring and the outer sleeve are linked by a transmission belt. The ratio of the outer diameter of the power rotating ring and the outer sleeve of the rotating ring is 1:2 to 1:3 to achieve deceleration rotation of the packing assembly and ensure uniform distribution of the castable material; the transmission belt is a toothed synchronous belt, and the teeth of the transmission belt mesh with the tooth grooves of the outer walls of the power rotating ring and the outer sleeve of the rotating ring, and the tension of the transmission belt can be adjusted by a tensioning wheel provided on the support base to prevent slippage.

[0019] By adopting the above-described technical solution, the beneficial effects achieved by this invention compared to the prior art are as follows: (1) This invention relates to a precast furnace cover casting device. The water injection tank inside the stirring rod sprays water to the connection of the spiral stirring blade through the water outlet, which effectively reduces the adhesion of refractory materials during the stirring process, reduces raw material loss, and extends the service life of the stirring components.

[0020] (2) This invention relates to a precast furnace cover casting device. The double-fixed design of the spiral stirring blade and the stirring rod enhances the stirring intensity. Combined with the evenly distributed water outlet holes, the liquid and refractory material are fully integrated, and the material uniformity is improved by 20%-30%.

[0021] (3) This invention relates to a precast furnace cover casting device. The pneumatic valve is equipped with a pressure sensor and a manual emergency switch to realize real-time pressure monitoring and emergency handling of faults during the casting process, thereby improving the stability of the injection by 40% and reducing the scrap rate by 15%.

[0022] (4) This invention relates to a precast furnace cover casting device, wherein three rows of staggered casting branch pipes are combined with a pipe diameter gradient design (thick in the middle and thin at both ends) to ensure that each area of ​​the precast furnace cover mold is filled evenly and the density difference is controlled within ±3%.

[0023] (5) This invention relates to a precast furnace cover casting device, wherein the module matching (20° pressure angle) of the power bevel gear and the driven bevel gear + toothed synchronous belt drive realizes the synchronous linkage of mixing and casting actions, increasing production efficiency by 25% and reducing energy consumption by 18%.

[0024] (6) This invention relates to a precast furnace cover casting device, with a self-lubricating bushing design of the retaining ring groove and the slider + tensioning wheel adjustment, which reduces transmission friction resistance (by 40%), prevents slippage, and reduces equipment failure rate by 22%.

[0025] (7) This invention relates to a precast furnace cover casting device, a flange-connected second conveying pipe, and a detachable rotating component sealing ring, which shortens equipment maintenance time by 50% and reduces maintenance costs by 35%.

[0026] (8) This invention relates to a precast furnace cover casting device, wherein the shock-absorbing rubber pad of the support seat reduces operating noise (reduced by 15 decibels) and vibration, and the wear-resistant coating of the mold inlet and outlet groove protects the mold edge and extends the mold service life (increased by 40%).

[0027] (9) This invention relates to a precast furnace cover casting device with a redundant design of mold inlet and outlet groove width (5-10cm) to adapt to various specifications of furnace cover molds, supporting rapid mold change production and reducing product changeover time by 60%.

[0028] (10) This invention relates to a precast furnace cover casting device. Through the optimization of the transmission ratio (1:2-1:3 reduction ratio) and the sealing design of the rotating components, the uniformity of the casting material distribution is improved by 35%, and the product qualification rate is increased from 85% to 95%.

[0029] (11) This invention relates to a precast furnace cover casting device. The anti-sticking design and precise injection system reduce raw material waste, and the raw material loss per batch production is reduced from 8% to 3%, saving about 20%-25% of the annual cost.

[0030] (12) This invention relates to a precast furnace cover casting device. The linkage transmission system and shock absorption design reduce the idling loss of the equipment and reduce the energy consumption of the unit product by 18%-22%, which meets the requirements of green manufacturing.

[0031] In summary, this invention effectively solves industry pain points such as poor versatility, uneven material pouring, and high material loss in refractory casting equipment through three core innovations: an anti-sticking mixing structure, a precise casting system, and a high-efficiency linkage transmission. The combination of the built-in water inlet and spiral mixing blades in the mixing rod improves the uniformity of raw material mixing by 30% and reduces material loss by 50%. The staggered gradient casting branches and pressure sensor control ensure mold filling accuracy of ±3%. The gear-synchronous belt linkage transmission system enables simultaneous mixing and casting, increasing production efficiency by 25%. Furthermore, the modular and detachable design significantly reduces maintenance costs, and the wear-resistant and non-slip mold inlet / outlet slots are adaptable to the production of multiple product specifications, significantly enhancing the equipment's versatility.

[0032] This invention is applicable to the large-scale and refined production of precast furnace covers in the refractory materials industry. It can be widely used in the precast furnace cover manufacturing of industrial kilns such as metallurgical steelmaking furnaces, cement rotary kilns, and glass melting furnaces. By improving product quality stability and production efficiency, it can help enterprises reduce production costs and enhance market competitiveness. It is particularly suitable for the production needs of small-batch, multi-variety orders and has significant application value in promoting the technological upgrading of refractory casting equipment. Attached Figure Description

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0034] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is an assembly diagram of component 6 in an embodiment of the present invention; Figure 3 This is a schematic diagram of the packing assembly structure according to an embodiment of the present invention; Figure 4 This is a cross-sectional view at point A of the present invention; Figure 5 This is a schematic diagram of the stirring assembly structure according to an embodiment of the present invention; Figure 6 This is a cross-sectional view at point B of the present invention.

[0035] In the diagram: 1. Power motor; 2. First drive shaft; 3. Power bevel gear; 4. Mixing vessel; 5. Support frame; 6. Rotating assembly; 7. Transmission belt; 8. Power rotating ring; 9. Support seat; 10. Second drive shaft; 11. Limiting rod; 12. Inner ring sleeve; 13. Outer ring sleeve; 14. Rotating ball; 15. Casting branch pipe; 16. First conveying pipe; 17. Casting main pipe; 18. Second conveying pipe; 19. Feed trough; 20. Liquid delivery pipe; 21. Pneumatic valve; 22. Stirring rod; 23. Spiral stirring blade; 24. Water outlet; 25. Driven bevel gear. Detailed Implementation

[0036] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustrative and understanding purposes only and are not intended to limit the scope of the invention.

[0037] Example 1: A precast furnace cover casting device like Figures 1 to 6 As shown, this embodiment relates to a precast furnace cover casting device, including a mixing tank 4, a power assembly disposed at one end of the mixing tank 4, a packing assembly disposed below the mixing tank 4, a support base 9 disposed below the power assembly, and a support frame 5 disposed at the end of the mixing tank 4 away from the power assembly. A mold inlet / outlet groove is formed at the bottom of the support frame 5. To ensure smooth mold entry and exit, the width of the mold inlet / outlet groove is 5-10 cm wider than the maximum outer diameter of the precast furnace cover mold, and the groove wall is provided with a wear-resistant and anti-slip coating.

[0038] The mixing vessel 4 is equipped with a stirring component, which includes a stirring rod 22 and a spiral stirring blade 23. One end of the stirring rod 22 is movably inserted through one side wall of the mixing vessel 4, and the other end, away from the side wall of the mixing vessel 4, has a water inlet groove. The depth of the water inlet groove does not exceed the side wall through which the stirring rod 22 is movably inserted. A liquid inlet pipe 20 is fixedly inserted through the other side of the mixing vessel 4 away from the side through which the stirring rod 22 is movably inserted. One end of the liquid inlet pipe 20 is inserted into the mixing vessel 4 and into the water inlet groove of the stirring rod 22, and the end of the liquid inlet pipe 20 does not abut against the bottom of the water inlet groove. The distance between the two is maintained at 2-5 mm to prevent the liquid inlet pipe 20 from becoming blocked. The spiral stirring blade 23 is fixedly wound around the outer wall of the stirring rod 22 inside the mixing vessel 4. To ensure the connection strength between the spiral stirring blade 23 and the stirring rod 22, the spiral stirring blade 23 and the stirring rod 22 are connected by a double fixing method of welding and bolts, and the weld is treated with anti-rust treatment.

[0039] The stirring rod 22, which has a water inlet groove, has multiple water outlet holes 24 evenly distributed on its portion. Each water outlet hole 24 is located at the fixed connection between the stirring rod 22 and the spiral stirring blade 23 wound around its outer wall. The diameter of the water outlet hole 24 is 3-5 mm, and the spacing between adjacent water outlet holes 24 is 8-12 cm to ensure that the liquid is evenly dispersed in the stirred refractory material.

[0040] A power assembly is fixedly mounted on the end of the stirring rod 22 outside the mixing vessel 4. The power assembly includes a power motor 1. A first drive shaft 2 is fixedly mounted on the power output end of the power motor 1. A power bevel gear 3 is fixedly mounted on the other end of the first drive shaft 2 away from the power motor 1. The end of the power bevel gear 3 away from the first drive shaft 2 is fixedly connected to the end of the stirring rod 22 outside the mixing vessel 4. A support base 9 is fixedly mounted on the bottom of the power motor 1. To prevent deviation during power transmission, the first drive shaft 2 is connected to the output end of the power motor 1 and the power bevel gear 3 by keys, and locating pins are provided for axial fixation. A shock-absorbing rubber pad is provided on the bottom of the support base 9 to reduce vibration and noise during the operation of the power motor 1.

[0041] A packing assembly is installed below the mixing vessel 4. The packing assembly includes a main casting pipe 17. At least three rows of casting branch pipes 15 are arranged along the length of the main casting pipe 17. A first conveying pipe 16 is connected to the top of the main casting pipe 17. A rotating component 6 is sleeved on the end of the first conveying pipe 16 away from the main casting pipe 17. The diameter of the casting branch pipes 15 gradually decreases from the middle of the main casting pipe 17 to both ends to ensure uniform distribution of the casting material. Adjacent rows of casting branch pipes 15 are staggered to cover the entire casting area of ​​the precast furnace cover mold.

[0042] The rotating assembly 6 includes a rotating inner sleeve 12 fixedly connected to the end of the first material conveying main pipe 16 away from the casting main pipe 17. Multiple rotating bead grooves are evenly distributed on the outer surface of the rotating inner sleeve 12, and a rotating bead 14 is movably disposed in each rotating bead groove. A rotating outer sleeve 13 is fitted over the rotating inner sleeve 12, and a rotating groove is formed on the inner surface of the rotating outer sleeve 13. The rotating groove and the rotating bead 14 are movably engaged. The cross-sections of the rotating bead grooves and the rotating grooves are both arc-shaped. The diameter of the rotating bead 14 is adapted to the rotating bead grooves and the rotating grooves to ensure flexible rotation. A sealing ring is provided between the rotating outer sleeve 13 and the rotating inner sleeve 12 to prevent leakage of the casting material.

[0043] A second feed pipe 18 is fixedly installed on the top of the rotating ring jacket 13, and the other end of the second feed pipe 18 away from the rotating ring jacket 13 is connected to the mixing vessel 4. The second feed pipe 18 is connected to the rotating ring jacket 13 and the mixing vessel 4 through flanges, which facilitates disassembly and maintenance.

[0044] The second conveying pipe 18 is equipped with a pneumatic valve 21. The pneumatic valve 21 is equipped with a manual emergency switch. When the pneumatic system fails, the valve can be opened and closed manually to ensure the safe operation of the equipment. At the same time, a pressure sensor is installed next to the pneumatic valve 21 to monitor the conveying pressure in real time and ensure the stability of the pouring process.

[0045] A limiting rod 11 is fixedly installed on the side of the support base 9 facing the mixing vessel 4. A retaining ring is provided at the end of the limiting rod 11 away from the support base 9. A groove is opened on the inner side wall of the retaining ring along the circumference of the retaining ring. A second drive shaft 10 with a slider that matches the groove is movably installed inside the retaining ring. A driven bevel gear 25 is fixedly installed at the top of the second drive shaft 10, and a power rotating ring 8 is fixedly installed at the bottom of the second drive shaft 10. The driven bevel gear 25 and the power bevel gear 3 have the same module and a pressure angle of 20°. The center distance between the two is the sum of the pitch circle radii of the two gears to ensure smooth power transmission. The groove depth of the retaining ring is 8-12mm. The height of the slider is adapted to the groove depth, and a self-lubricating bushing is provided between the slider and the groove to reduce frictional resistance.

[0046] The power rotating ring 8 and the outer ring sleeve 13 are on the same horizontal plane, and their outer side walls are linked by the transmission belt 7. The ratio of the outer diameters of the power rotating ring 8 and the outer ring sleeve 13 is 1:2 to 1:3 to achieve deceleration rotation of the packing assembly and ensure uniform distribution of the castable material. The transmission belt 7 is a toothed synchronous belt, and the teeth of the transmission belt 7 mesh with the tooth grooves of the outer side walls of the power rotating ring 8 and the outer ring sleeve 13. The tension of the transmission belt 7 can be adjusted by the tensioning wheel set on the support seat 9 to prevent slippage.

[0047] In this embodiment, the precast furnace cover mold is smoothly fed into the casting station through the mold inlet / outlet groove. The 5-10cm gap between the wear-resistant and anti-slip coating on the groove wall and the outer diameter of the mold ensures precise mold positioning and prevents scratches. The power motor 1 is started, and power is stably transmitted to the stirring rod 4 via the key connection and positioning pin between the first drive shaft 2 and the power bevel gear 3, driving it to rotate at a set speed. This drives the spiral stirring blades 23, which are both welded and bolted, to mix the refractory material.

[0048] Meanwhile, external liquid is injected into the water tank of the stirring rod 22 through the infusion pipe 20. Because the end of the infusion pipe 20 maintains a 2-5mm gap with the bottom of the water tank, clogging is prevented. The liquid is evenly dispersed into the material through the water outlet 24 on the stirring rod, which has a diameter of 3-5mm, a spacing of 8-12cm, and is located at the fixed connection point of the spiral stirring blades 23, achieving both anti-sticking and efficient mixing. When the power bevel gear 3 rotates, the driven bevel gear 25, which matches its module and pressure angle, rotates synchronously. This drives the power rotating ring 8 via the second transmission shaft 10, and through the toothed synchronous belt, it is linked with the rotating ring outer sleeve 13, causing the casting main pipe to rotate at a reduction ratio of 1:2 to 1:3.

[0049] The uniformly mixed refractory material is conveyed to the main casting pipe 17 via the second conveying pipe 18, with the flow rate controlled by the top pneumatic valve 21. A pressure sensor monitors the conveying pressure in real time; when the pressure fluctuates, the opening of the pneumatic valve 21 is automatically adjusted. In case of pneumatic system failure, a manual emergency switch can be used to ensure safe operation of the equipment. Three rows of casting branch pipes 15, arranged alternately with gradually changing diameters along the length of the main casting pipe 17, achieve uniform material injection into the mold during rotation. Combined with a bottom vibrator to expel air bubbles, this ultimately completes the high-precision casting and molding of the precast furnace cover.

[0050] It should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A precast furnace cover casting device, characterized in that: The casting device includes a mixing tank (4), a power assembly at one end of the mixing tank (4), a packing assembly below the mixing tank (4), a support base (9) below the power assembly, and a support frame (5) at the end of the mixing tank (4) away from the power assembly. The bottom of the support frame (5) is provided with a mold inlet / outlet groove. To ensure that the mold can enter and exit smoothly, the width of the mold inlet / outlet groove is 5-10cm greater than the maximum outer diameter of the precast furnace cover mold, and the groove wall is provided with a wear-resistant and anti-slip coating.

2. The precast furnace cover casting device according to claim 1, characterized in that: The stirring vessel (4) is equipped with a stirring component, which includes a stirring rod (22) and a spiral stirring blade (23). One end of the stirring rod (22) is movably inserted through one side wall of the stirring vessel (4), and the other end away from the side wall of the stirring vessel (4) has a water injection groove. The depth of the water injection groove does not exceed the side wall of the stirring vessel (4) through which the stirring rod (22) is movably inserted. An infusion tube (20) is fixedly inserted through the other side of the stirring vessel (4) away from where the stirring rod (22) is movably inserted. One end of the infusion tube (20) is inserted into the stirring vessel (4) and into the water injection groove opened by the stirring rod (22). The end of the infusion tube (20) does not abut against the bottom of the water injection groove, and the distance between the two is maintained at 2- 5mm, to prevent the infusion tube (20) from being blocked; the stirring rod (22) is fixedly wound with a spiral stirring blade (23) on the outer wall inside the stirring vessel (4); in order to ensure the connection strength between the spiral stirring blade (23) and the stirring rod (22), the spiral stirring blade (23) and the stirring rod (22) are connected by a double fixing method of welding and bolts, and the welding point is treated with anti-rust treatment.

3. The precast furnace cover casting device according to claim 2, characterized in that: The stirring rod (22) with the water injection groove has a plurality of water outlet holes (24) evenly distributed on the part thereof. Each water outlet hole (24) is located at the stirring rod (22) and at the fixed connection point of the spiral stirring blade (23) which is wound around the outer wall of the stirring rod (22). The diameter of the water outlet hole (24) is 3-5mm and the spacing between adjacent water outlet holes (24) is 8-12cm to ensure that the liquid is evenly dispersed in the stirred refractory material.

4. The precast furnace cover casting device according to claim 2, characterized in that: The stirring rod (22) is fixedly equipped with a power component at the end outside the stirring vessel (4). The power component includes a power motor (1). The power output end of the power motor (1) is fixedly equipped with a first transmission shaft (2). The other end of the first transmission shaft (2) away from the power motor (1) is fixedly equipped with a power bevel gear (3). The end of the power bevel gear (3) away from the first transmission shaft (2) is fixedly connected to the end of the stirring rod (22) outside the stirring vessel (4). The support base (9) is fixedly equipped at the bottom of the power motor (1). To prevent deviation during power transmission, the first transmission shaft (2) is connected to the output end of the power motor (1) and the power bevel gear (3) by a key, and a positioning pin is provided for axial fixation. The bottom of the support base (9) is equipped with a shock-absorbing rubber pad to reduce the vibration and noise of the power motor (1) during operation.

5. The precast furnace cover casting device according to any one of claims 1-4, characterized in that: A packing assembly is provided below the mixing tank (4). The packing assembly includes a casting main pipe (17). At least three rows of casting branch pipes (15) are provided at the bottom of the casting main pipe (17) along the length direction of the casting main pipe (17). The top of the casting main pipe (17) is connected to a first material conveying main pipe (16). A rotating assembly (6) is sleeved on the end of the first material conveying main pipe (16) away from the casting main pipe (17). The diameter of the casting branch pipes (15) gradually decreases from the middle of the casting main pipe (17) to both ends to ensure that the casting material is evenly distributed. The two adjacent rows of casting branch pipes (15) are staggered to cover the entire casting area of ​​the precast furnace cover mold.

6. The precast furnace cover casting device according to claim 5, characterized in that: The rotating assembly (6) includes a rotating inner sleeve (12) fixedly connected to the end of the first material conveying main pipe (16) away from the casting main pipe (17). The outer surface of the rotating inner sleeve (12) is uniformly provided with a plurality of rotating bead grooves, and a rotating bead (14) is movably disposed in each rotating bead groove. The rotating inner sleeve (12) is covered with a rotating outer sleeve (13), and the inner surface of the rotating outer sleeve (13) is provided with a rotating groove. The rotating groove is movably engaged with the rotating bead (14). The cross-sections of the rotating bead groove and the rotating groove are both arc-shaped. The diameter of the rotating bead (14) is adapted to the rotating bead groove and the rotating groove to ensure flexible rotation. At the same time, a sealing ring is provided between the rotating outer sleeve (13) and the rotating inner sleeve (12) to prevent the casting material from leaking.

7. The precast furnace cover casting device according to claim 6, characterized in that: A second feed pipe (18) is fixedly installed on the top of the rotating outer sleeve (13). The other end of the second feed pipe (18) away from the rotating outer sleeve (13) is connected to the mixing vessel (4). The second feed pipe (18) is connected to the rotating outer sleeve (13) and the mixing vessel (4) through flanges, which facilitates disassembly and maintenance.

8. The precast furnace cover casting device according to claim 7, characterized in that: The second material conveying pipe (18) is fitted with a pneumatic valve (21); the pneumatic valve (21) is equipped with a manual emergency switch. When the pneumatic system fails, the valve can be opened and closed by manual switch to ensure safe operation of the equipment; at the same time, a pressure sensor is installed next to the pneumatic valve (21) to monitor the material conveying pressure in real time and ensure the stability of the pouring process.

9. The precast furnace cover casting device according to claim 4, characterized in that: A limiting rod (11) is fixedly installed on the side of the support base (9) facing the stirring vessel (4). A retaining ring is provided at the end of the limiting rod (11) away from the support base (9). A groove is opened on the inner side wall of the retaining ring along the circumference of the retaining ring. A second drive shaft (10) with a slider that matches the groove is movably installed inside the retaining ring. A driven bevel gear (25) is fixedly installed at the top of the second drive shaft (10), and a power rotating ring (8) is fixedly installed at the bottom end of the second drive shaft (10). The driven bevel gear (25) and the power bevel gear (3) have the same module and a pressure angle of 20°. The center distance between the two is the sum of the pitch circle radii of the two gears to ensure smooth power transmission. The groove depth of the retaining ring is 8-12mm. The height of the slider is adapted to the groove depth. A self-lubricating bushing is provided between the slider and the groove to reduce frictional resistance.

10. The precast furnace cover casting device according to claim 9, characterized in that: The power rotating ring (8) and the rotating ring outer sleeve (13) are on the same horizontal plane, and the outer walls of the power rotating ring (8) and the rotating ring outer sleeve (13) are linked by a transmission belt (7); the ratio of the outer diameter of the power rotating ring (8) and the rotating ring outer sleeve (13) is 1:2 - 1:3, so as to realize the deceleration rotation of the packing assembly and ensure the uniform distribution of the casting material; the transmission belt (7) adopts a toothed synchronous belt, and the tooth shape of the transmission belt (7) meshes with the tooth groove of the outer wall of the power rotating ring (8) and the rotating ring outer sleeve (13), and the tension of the transmission belt (7) can be adjusted by the tensioning wheel set on the support seat (9) to prevent slippage.

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