A kind of based on engine cylinder cover casting high-pressure salt core production uses calcining device

Abstract

This invention relates to the field of casting technology, and discloses a roasting device for high-pressure salt core production based on engine cylinder head casting. The device includes a resistance furnace, a reciprocating drive mechanism, and a slag skimming drive mechanism, and further includes a first disturbance frame and a second disturbance frame movably installed inside the resistance furnace. The technical solution of this invention uses a servo motor to drive a first bevel gear to rotate, which in turn drives a meshing second bevel gear to rotate, thereby operating a telescopic tube and transmission components. Through the engagement of the flipping bevel gear and the meshing face gear, multiple disturbance plates are synchronously rotated to a closed state, isolating the slag on the surface of the molten salt from the molten salt. The rotating drive bevel gear drives a rotating disk to rotate through a dynamically meshing second half-tooth bevel gear, which in turn drives a slag skimming rod to rotate and scrape off the slag isolated from the top surface of the closed disturbance plates. By physically removing the slag, the purity of the salt core is ensured, thus guaranteeing the mechanical properties of the salt core.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and in particular to a roasting apparatus for producing high-pressure salt cores based on engine cylinder head casting. Background Technology

[0002] With the development of automotive lightweighting technology, more and more lightweight alloy castings have been widely used in the body and chassis components of passenger cars. Using cavity structure castings can significantly improve the structural rigidity of components and further reduce their weight. High-pressure casting with a vacuum system is currently the widely used casting method for automotive lightweight alloy castings. By applying water-soluble salt cores during high-pressure casting, castings with complex internal cavity structures can be formed, and the salt cores can be removed by water dissolution. Water-soluble salt cores refer to cores made of water-soluble alkali metal salts. After casting, the cores are washed with high-temperature, high-pressure water to clean the casting. Compared with sand cores widely used in sand casting and low-pressure casting, water-soluble salt cores have many advantages such as high strength, good surface quality, and no gas generation. The surface quality of the casting is good, and water-soluble salt cores are easy to remove, causing less environmental pollution and not damaging the casting during cleaning. In addition, inorganic salts can be recycled, reducing resource consumption. High-pressure salt cores are a key consumable material for forming complex internal cavity structures, and their production quality directly affects the precision and performance of castings. Therefore, in order to ensure the quality and performance of high-pressure salt cores, the crucial step of roasting is an essential process. Roasting refers to heating the salt core at a specific temperature to remove excess moisture and impurities, and improve its physical and chemical properties. This process can improve the strength and stability of the salt core, thereby reducing defects in the casting during subsequent production processes.

[0003] In existing roasting equipment, slag is generated on the surface of the salt melt during the roasting process. If the slag is not treated in time, it will spread into the salt melt, causing salt melt contamination. The slag not only affects the appearance of the product, but more importantly, it will embed or adhere to the salt core, affecting the purity of the salt core in subsequent processes, causing defects on the surface of the salt core, and even reducing its strength. It may even be drawn into the alloy liquid during casting, forming casting inclusions, affecting the dimensional accuracy and mechanical properties of the cylinder head.

[0004] Therefore, the aforementioned technical problems need to be solved. Summary of the Invention

[0005] To overcome the shortcomings of existing technologies, this invention proposes a roasting device for high-pressure salt core production based on engine cylinder head casting. This device addresses the problem that if slag is not treated in time, it will diffuse into the molten salt, causing contamination. Slag not only affects the appearance of the product but, more importantly, it can embed or adhere to the salt core, affecting its purity in subsequent processes, leading to surface defects, reduced strength, and even inclusions in the alloy liquid during casting, thus affecting the dimensional accuracy and mechanical properties of the cylinder head.

[0006] To solve the above-mentioned technical problems, the basic technical solution proposed by this invention is as follows: A roasting apparatus for producing high-pressure salt cores based on engine cylinder head casting includes a resistance furnace, a reciprocating drive mechanism and a slag skimming drive mechanism, and also includes a first disturbance frame and a second disturbance frame movably installed inside the resistance furnace, with the first disturbance frame located above the second disturbance frame. A lifting mechanism is fixedly installed on the back of the outside of the resistance furnace, and a sealing cover is fixedly installed on the top of the lifting mechanism. The reciprocating drive mechanism is fixedly installed at the top of the lifting mechanism and extends through the sealing cover into the interior of the resistance furnace. The reciprocating drive mechanism consists of a bracket, a drive motor, a transmission bevel gear set, two worm gears, a linkage shaft, a telescopic tube, and a telescopic rod. The drive motor is fixedly installed at the top of the bracket. The transmission bevel gear set is rotatably installed on one side of the bracket and is connected to the output end of the drive motor. The back sides of the two worm gears are rotatably installed on one side of the bracket and are meshed with the transmission bevel gear set. The linkage shaft is fixedly installed on the front of the two worm gears and is connected to the top of the telescopic tube and the telescopic rod. The telescopic rod is movably installed inside the telescopic tube, and one end of the telescopic tube and the telescopic rod extends into the interior of the resistance furnace. The first disturbance frame is fixedly installed at the bottom end of the telescopic tube, and the second disturbance frame is fixedly installed at the bottom end of the telescopic rod. The skimming drive mechanism is fixedly installed at the bottom of the bracket. The skimming drive mechanism consists of a servo motor, a first bevel gear, and a second bevel gear. The first bevel gear is fixedly installed at the output end of the servo motor, and the second bevel gear is rotatably installed at the top of the sealing cover. The second bevel gear is meshed with the first bevel gear. The first disturbance frame consists of a mounting base, multiple disturbance plates, a cleaning ring, a skimming assembly, and a transmission assembly. The mounting base consists of a mounting plate and a rotating plate, with the rotating plate rotatably mounted on top of the mounting plate. The transmission assembly consists of a face gear, a first half-tooth bevel gear, a drive bevel gear, and a second half-tooth bevel gear. The face gear is rotatably mounted inside the mounting plate. The first half-tooth bevel gear is fixedly mounted on top of the face gear. The second half-tooth bevel gear is fixedly mounted on top inside the rotating plate. The drive bevel gear is located between the first half-tooth bevel gear and the second half-tooth bevel gear and dynamically meshes with them. The drive bevel gear is also fixedly mounted at the bottom end of the telescopic tube. The cleaning ring is sleeved on the outside of the mounting base. Multiple disturbance plates are arranged in a ring array between the mounting base and the cleaning ring. One end of each disturbance plate is equipped with a flipping bevel gear via a shaft, and the flipping bevel gear meshes with the face gear. One end of the skimming assembly is rotatably mounted on the outside of the mounting plate. The skimming assembly consists of a skimming rod, a linkage bevel gear, and a limiting assembly. The linkage bevel gear is mounted on one end of the skimming rod via a shaft and extends into the interior of the rotating plate, where it dynamically meshes with the flipping bevel gear. The limiting assembly is fixedly sleeved on the outside of the linkage bevel gear and is also fixedly mounted on the inner wall of the rotating plate. A reciprocating drive mechanism drives the first and second agitator frames to reciprocate relative to each other inside the resistance furnace, agitating and stirring the molten salt inside the furnace. During skimming, the first agitator frame is moved to a set position, and the skimming drive mechanism is activated to perform skimming. Specifically, a servo motor in the skimming drive mechanism drives the first bevel gear to rotate. The rotating first bevel gear, through a meshing second bevel gear, drives the telescopic tube to rotate. The rotating telescopic tube drives the transmission assembly, which in turn drives the drive bevel gear to rotate. The gear dynamically meshes with the first half-tooth bevel gear, causing the face gear to rotate intermittently. The intermittently rotating face gear drives the corresponding disturbance plate to rotate synchronously through multiple meshing flip bevel gears, forming a closed state to isolate the scum on the surface of the salt melt from the salt melt. At the same time, the rotating flip bevel gear drives the meshing scum skimming component to flip, so that the scum skimming component rotates to the scum skimming state. The continuing to rotate drive bevel gear disengages from the first half-tooth bevel gear and dynamically meshes with the second half-tooth bevel gear. The rotating drive bevel gear drives the rotating disk to rotate through the dynamically meshing second half-tooth bevel gear, which in turn drives the scum skimming component to rotate to scrape off the isolated scum.

[0007] Preferably, the transmission bevel gear set consists of a driving bevel gear, a driven bevel gear, and a worm. The driving bevel gear is fixedly connected to the output end of the drive motor via a shaft. The driven bevel gear is rotatably mounted on one side of the bracket and meshes with the driving bevel gear. The worm is fixedly mounted on the bottom end of the driven bevel gear, and two worm wheels are symmetrically distributed on both sides of the worm and mesh with it.

[0008] Preferably, the linkage consists of two drive shafts, two first transmission shafts, a first bushing, two second transmission shafts, two third transmission shafts, and a second bushing. One end of each of the two drive shafts is fixedly mounted on the front of two worm gears. The other ends of the two drive shafts are rotatably connected to one end of each of the two first transmission shafts and one end of each of the two second transmission shafts via bolts. The other ends of the two first transmission shafts are rotatably connected to both ends of the first bushing via bolts. The other ends of the two second transmission shafts are movably connected to one end of each of the two third transmission shafts via bolts. The other ends of the two third transmission shafts are rotatably connected to both ends of the second bushing via bolts.

[0009] Preferably, a spline bar is installed in an annular array on the outer side of the telescopic tube, and a sleeve end is fixedly installed at the top of both the telescopic tube and the telescopic rod. The first bushing rod is rotatably sleeved on the outside of the sleeve end at the top of the telescopic rod, and the second bushing rod is rotatably sleeved on the outside of the sleeve end at the top of the telescopic tube.

[0010] Preferably, the second bevel gear has a spline hole inside, and the telescopic tube passes through the spline hole inside the second bevel gear through the outer spline strip and is splined with the spline hole.

[0011] Preferably, the limiting component consists of a limiting wheel, a locking pawl, and a return spring. The limiting wheel is fixedly sleeved on one side of the linkage bevel gear. One end of the locking pawl is mounted on the inner wall of the rotating disk via a rotating shaft, and the other end of the locking pawl is dynamically engaged with the limiting wheel. One end of the return spring is fixedly mounted on the inner wall of the rotating disk, and the other end of the return spring is fixedly mounted on one side of the locking pawl.

[0012] Preferably, a slag-skimming port is provided on one side of the top of the cleaning ring, and the cleaning ring is in contact with the inner wall of the electric resistance furnace.

[0013] Preferably, an impurity collection tank is installed through the top of the outside of the resistance furnace, and the slag skimming port is dynamically connected to the slag inlet of the impurity collection tank.

[0014] Preferably, a nitrogen storage tank is fixedly installed on the back of the resistance furnace, and the output end of the nitrogen storage tank is connected to one side of the top of the resistance furnace through a solenoid valve tube. A cyclone dust collector is installed on the other side of the top of the resistance furnace through a solenoid valve tube.

[0015] The beneficial effects of this invention are: The technical solution of this invention uses a servo motor to drive the first bevel gear to rotate, and the rotating first bevel gear drives the meshing second bevel gear to rotate, thereby enabling the telescopic tube and transmission components to operate; through the cooperation of the flipping bevel gear and the meshing face gear, multiple disturbance plates are synchronously rotated to a closed state, isolating the scum on the surface of the salt melt from the salt melt, thus preventing the scum from spreading and contaminating the salt melt; at the same time, the rotating flipping bevel gear flips through the meshing linkage bevel gear, thereby driving the skimming rod to rotate until it contacts the top surface of the closed disturbance plate.

[0016] The continuously rotating drive bevel gear disengages from the first half-tooth bevel gear and dynamically engages with the second half-tooth bevel gear. The rotating drive bevel gear drives the rotating disk to rotate through the dynamically engaged second half-tooth bevel gear, which in turn drives the skimming rod to rotate and scrape off the scum isolated from the top surface of the closed disturbance plate. By physically removing the scum, impurities are prevented from embedding or adhering to the inner wall of the electric resistance furnace during the salt core solidification process, ensuring the purity of the salt core, effectively preventing internal defects in the salt core, avoiding surface roughness and reduced strength, and ensuring the mechanical properties of the salt core. This solves the problem of defects and performance degradation caused by scum contamination during the production process of the salt core, and improves the quality and service life of the cylinder head. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the resistance furnace in this invention; Figure 3 This is a schematic diagram of the connection structure between the reciprocating drive mechanism and the first disturbance frame and the second disturbance frame in this invention; Figure 4 This is a schematic diagram of the reciprocating drive mechanism in this invention; Figure 5 This is a schematic diagram of the linkage shaft structure in this invention; Figure 6 This is a schematic diagram of the first disturbance frame in the open state in this invention; Figure 7 This is a schematic diagram of the first disturbance frame in its closed state in this invention; Figure 8 This is a schematic diagram of the internal structure of the first disturbance frame in this invention; Figure 9 This is a schematic diagram of the internal structure of the mounting base in this invention; Figure 10 This is a schematic diagram of the transmission component structure in this invention; Figure 11 This is a schematic diagram of the skimming component structure in this invention; Figure 12 This is a schematic diagram of the limiting component structure in this invention.

[0018] Explanation of reference numerals in the attached figures: 1. Resistance furnace; 101. Impurity collection tank; 102. Nitrogen storage tank; 103. Lifting mechanism; 104. Sealing cover; 105. Cyclone dust collector; 2. Reciprocating drive mechanism; 201. Support; 202. Drive motor; 203. Transmission bevel gear set; 2031. Driving bevel gear; 2032. Driven bevel gear; 2033. Worm gear; 204. Worm wheel; 205. Linkage shaft; 2051. Driving shaft; 2052. First transmission shaft; 2053. First bushing shaft; 2054. Second transmission shaft; 2055. Third transmission shaft; 2056. Second bushing shaft; 206. Telescopic tube; 2061. Splined strip; 2062. Socket end 207. Telescopic rod; 3. Skimming drive mechanism; 301. Servo motor; 302. First bevel gear; 303. Second bevel gear; 3031. Spline hole; 4. First disturbance frame; 401. Mounting base; 4011. Mounting plate; 4012. Rotating plate; 402. Disturbance plate; 4021. Tilting bevel gear; 403. Cleaning ring; 4031. Skimming port; 404. Skimming assembly; 4041. Skimming rod; 4042. Linkage bevel gear; 4043. Limiting assembly; 405. Transmission assembly; 4051. Face gear; 4052. First half-tooth bevel gear; 4053. Drive bevel gear; 4054. Second half-tooth bevel gear; 5. Second disturbance frame. Detailed Implementation

[0019] The following will be combined with the appendix Figure 1 To be continued Figure 12 The technical solutions in the embodiments of the present invention have been clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] A roasting apparatus for producing high-pressure salt cores based on engine cylinder head casting includes a resistance furnace 1, a reciprocating drive mechanism 2 and a slag skimming drive mechanism 3, and also includes a first disturbance frame 4 and a second disturbance frame 5 movably installed inside the resistance furnace 1, with the first disturbance frame 4 located above the second disturbance frame 5. A lifting mechanism 103 is fixedly installed on the back of the outside of the resistance furnace 1, and a sealing cover 104 is fixedly installed on the top of the lifting mechanism 103. It should be noted that the lifting mechanism 103 drives the sealing cover 104 to move up and down, opening the feed port at the top of the resistance furnace 1, which facilitates the placement of the salt core material into the resistance furnace 1; a PID temperature controller is fixedly installed on the outside of the resistance furnace 1, and the resistance furnace 1 heats up evenly through the electric heating element, and the PID temperature controller achieves a temperature accuracy of ±5℃, ensuring that the salt particles are completely melted at 50℃ above the melting point. The reciprocating drive mechanism 2 is fixedly installed at the top of the lifting mechanism 103, and extends through the sealing cover 104 into the interior of the resistance furnace 1. The reciprocating drive mechanism 2 consists of a bracket 201, a drive motor 202, a transmission bevel gear set 203, two worm gears 204, a linkage shaft 205, a telescopic tube 206, and a telescopic rod 207. The drive motor 202 is fixedly installed at the top of the bracket 201, and the transmission bevel gear set 203 is rotatably installed on one side of the bracket 201. The transmission bevel gear set 203 is connected to the output end of the drive motor 202. The back of wheel 204 is rotatably mounted on one side of bracket 201, and the two worm gears 204 are meshed with transmission bevel gear set 203; the linkage shaft 205 is fixedly mounted on the front of the two worm gears 204, and the linkage shaft 205 is drivenly connected to the top of telescopic tube 206 and telescopic rod 207; the telescopic rod 207 is movably mounted inside telescopic tube 206, and one end of telescopic tube 206 and telescopic rod 207 extends into the inside of resistance furnace 1, and the first disturbance frame 4 is fixedly mounted at the bottom end of telescopic tube 206, and the second disturbance frame 5 is fixedly mounted at the bottom end of telescopic rod 207; It should be noted that when the drive motor 202 is powered on, it drives the two worm gears 204 to rotate relative to each other through the transmission bevel gear set 203. The two worm gears 204 rotate relative to each other through the linkage shaft 205, which drives the telescopic tube 206 and the telescopic rod 207 to move relative to each other. This, in turn, drives the first disturbance frame 4 and the second disturbance frame 5 to move relative to each other. The relative movement of the first disturbance frame 4 and the second disturbance frame 5 disturbs and stirs the salt melt inside the resistance furnace 1. Stirring can break the concentration gradient in the melt, prevent heavy elements from sinking or light elements from floating. Continuous stirring can ensure uniform composition and improve the consistency of salt core performance. Moreover, stirring promotes the floating of air bubbles, ensuring that the air bubbles escape completely and avoiding porosity defects in the casting. The skimming drive mechanism 3 is fixedly installed at the bottom of the bracket 201. The skimming drive mechanism 3 consists of a servo motor 301, a first bevel gear 302 and a second bevel gear 303. The first bevel gear 302 is fixedly installed at the output end of the servo motor 301, and the second bevel gear 303 is rotatably installed at the top of the sealing cover 104, and the second bevel gear 303 is meshed with the first bevel gear 302. It should be noted that when the servo motor 301 is powered on, it drives the first bevel gear 302 to rotate. The rotating first bevel gear 302 drives the meshing second bevel gear 303 to rotate. The rotating second bevel gear 303 drives the spline-connected telescopic tube 206 to rotate. The first disturbance frame 4 is composed of a mounting base 401, multiple disturbance plates 402, a cleaning ring 403, a skimming assembly 404, and a transmission assembly 405. The mounting base 401 is composed of a mounting plate 4011 and a rotating plate 4012. The rotating plate 4012 is rotatably mounted on the top of the mounting plate 4011. The rotating plate 4012 rotates relative to the mounting plate 4011. The transmission assembly 405 consists of a face gear 4051, a first half-tooth bevel gear 4052, a drive bevel gear 4053, and a second half-tooth bevel gear 4054. The face gear 4051 is rotatably mounted inside the mounting plate 4011. The first half-tooth bevel gear 4052 is fixedly mounted on the top of the face gear 4051. The second half-tooth bevel gear 4054 is fixedly mounted on the top inside the rotating plate 4012. The drive bevel gear 4053 is located between the first half-tooth bevel gear 4052 and the second half-tooth bevel gear 4054, and dynamically meshes with them. The drive bevel gear 4053 is fixedly mounted at the bottom end of the telescopic tube 206, which passes through the second half-tooth bevel gear 4054 and is rotatably connected to it. The cleaning ring 403 is sleeved on the outside of the mounting base 401. Multiple disturbance plates 402 are arranged in a ring array between the mounting base 401 and the cleaning ring 403. One end of each disturbance plate 402 is equipped with a flipping bevel gear 4021 through a shaft, and the flipping bevel gear 4021 is meshed with the face gear 4051. One end of the skimming assembly 404 is rotatably mounted on the outside of the mounting plate 4011. The skimming assembly 404 consists of a skimming rod 4041, a linkage bevel gear 4042, and a limiting assembly 4043. The linkage bevel gear 4042 is mounted on one end of the skimming rod 4041 via a shaft, and the linkage bevel gear 4042 extends into the interior of the rotating plate 4012 and is dynamically meshed with the flipping bevel gear 4021. The limiting assembly 4043 is fixedly sleeved on the outside of the linkage bevel gear 4042, and the limiting assembly 4043 is fixedly mounted on the inner wall of the rotating plate 4012. It should be noted that, since the flipping bevel gear 4021 and the linkage bevel gear 4042 are dynamically meshed, the rotating flipping bevel gear 4021 drives the skimming rod 4041 to rotate through the meshing linkage bevel gear 4042, so that the skimming rod 4041 rotates to contact the top surface of the closed disturbance plate 402, and the rotation direction of the linkage bevel gear 4042 is locked by the limiting component 4043, thereby locking the state of the skimming rod 4041; Among them, a slag skimming port 4031 is provided on one side of the top of the cleaning ring 403, and the cleaning ring 403 is in contact with the inner wall of the resistance furnace 1; an impurity collection tank 101 is installed through the top of the outer side of the resistance furnace 1, and the slag skimming port 4031 is dynamically connected to the slag inlet of the impurity collection tank 101. Working principle: First, the resistance furnace 1 heats the interior evenly through the heating element. After preheating, the lifting mechanism 103 drives the sealing cover 104 to move up and down, opening the feed port at the top of the resistance furnace 1 and putting the salt core material into the resistance furnace 1. Then, the PID temperature controller controls the temperature rise of the resistance furnace 1 to ensure that the salt particles are completely melted. During the salt melting process, the reciprocating drive mechanism 2 is activated. The moving reciprocating drive mechanism 2 drives the first disturbance frame 4 and the second disturbance frame 5 to move back and forth relative to each other inside the resistance furnace 1. Specifically, the drive motor 202 is powered on and drives the two worm gears 204 to rotate relative to each other through the transmission bevel gear set 203. The two worm gears 204 rotate relative to each other and drive the telescopic tube 206 and the telescopic rod 207 to move relative to each other through the linkage shaft 205, thereby driving the first disturbance frame 4 and the second disturbance frame 5 to move relative to each other. The reciprocating first disturbance frame 4 and the second disturbance frame 5 disturb and stir the salt melt inside the resistance furnace 1. After the salt melt is completely melted, the first disturbance frame 4 is moved up to the salt melt scum level; then the scum skimming drive mechanism 3 is activated to drive the first disturbance frame 4 to perform scum skimming operation; specifically, the servo motor 301 drives the first bevel gear 302 to rotate, and the rotating first bevel gear 302 drives the spline-connected telescopic tube 206 to rotate through the meshing second bevel gear 303, and the rotating telescopic tube 206 drives the transmission assembly 405 to operate; specifically, the rotating drive bevel gear 4053 dynamically meshes with the first half-tooth bevel gear 4052 to drive the face gear 4051 to rotate intermittently, and the intermittently rotating face gear 4051 drives the corresponding multiple disturbance plates 402 to rotate synchronously to the closed state through multiple meshing flip bevel gears 4021, and the multiple disturbance plates 402 in the closed state isolate the scum on the surface of the salt melt from the salt melt; At the same time, when the flipping bevel gear 4021 rotates, it drives the meshing and connected skimming component 404 to flip. Specifically, the rotating flipping bevel gear 4021 rotates through the meshing and connected linkage bevel gear 4042, thereby driving the skimming rod 4041 to rotate until it contacts the top surface of the closed disturbance plate 402, which facilitates the cleaning of the scum on the top surface of the closed disturbance plate 402. The continuously rotating drive bevel gear 4053 disengages from the first half-tooth bevel gear 4052 and dynamically engages with the second half-tooth bevel gear 4054. The rotating drive bevel gear 4053 drives the rotating disk 4012 to rotate through the dynamically engaged second half-tooth bevel gear 4054, which in turn drives the skimming assembly 404 to rotate. The skimming rod 4041 in the skimming assembly 404 separates the floating scum from the closed disturbance plate 402 and scrapes it off. The scraped floating scum enters the impurity collection tank 101 through the scum inlet connected to the skimming port 4031, realizing the collection of floating scum for unified treatment.

[0021] like Figures 3 to 5As shown, the transmission bevel gear set 203 consists of a driving bevel gear 2031, a driven bevel gear 2032, and a worm gear 2033. The driving bevel gear 2031 is fixedly connected to the output end of the drive motor 202 via a shaft. The driven bevel gear 2032 is rotatably mounted on one side of the bracket 201 and meshes with the driving bevel gear 2031. The worm gear 2033 is fixedly mounted on the bottom end of the driven bevel gear 2032, and two worm wheels 204 are symmetrically distributed on both sides of the worm gear 2033 and mesh with the worm gear 2033. The linkage 205 consists of two drive shafts 2051, two first transmission shafts 2052, a first bushing 2053, two second transmission shafts 2054, two third transmission shafts 2055, and a second bushing 2056. One end of each of the two drive shafts 2051 is fixedly mounted on the front of the two worm gears 204. The other ends of the two drive shafts 2051 are rotatably connected to one end of each of the two first transmission shafts 2052 and one end of each of the two second transmission shafts 2054 via bolts. The other ends of the two first transmission shafts 2052 are rotatably connected to both ends of the first bushing 2053 via bolts. The other ends of the two second transmission shafts 2054 are movably connected to one end of each of the two third transmission shafts 2055 via bolts. The other ends of the two third transmission shafts 2055 are rotatably connected to both ends of the second bushing 2056 via bolts. A spline bar 2061 is installed in a ring array on the outer side of the telescopic tube 206. The top ends of the telescopic tube 206 and the telescopic rod 207 are fixedly installed with a sleeve end 2062. The first shaft sleeve rod 2053 is rotatably sleeved on the outside of the sleeve end 2062 at the top end of the telescopic rod 207, and the second shaft sleeve rod 2056 is rotatably sleeved on the outside of the sleeve end 2062 at the top end of the telescopic tube 206. It should be noted that when the drive motor 202 is powered on, it drives the active bevel gear 2031. The rotating drive motor 202 drives the worm 2033 to rotate through the meshing driven bevel gear 2032. The rotating worm 2033 drives the two symmetrically distributed worm wheels 204 to rotate relative to each other. The two rotating worm gears 204 drive the corresponding two drive shafts 2051 to rotate, and the two rotating drive shafts 2051 synchronously pull the two first drive shafts 2052 and the two second drive shafts 2054 to move; the two first drive shafts 2052 drive the first bushing 2053 to move, while the two second drive shafts 2054 drive the second bushing 2056 to move through the two third drive shafts 2055; Since the first bushing rod 2053 is rotatably sleeved on the top end of the telescopic rod 207, the movement of the first bushing rod 2053 causes the telescopic rod 207 to extend and retract; since the second bushing rod 2056 is rotatably sleeved on the top end of the telescopic tube 206, the movement of the second bushing rod 2056 causes the telescopic tube 206 to extend and retract.

[0022] like Figures 3 to 4 As shown, the second bevel gear 303 has a spline hole 3031 inside. The telescopic tube 206 passes through the spline hole 3031 inside the second bevel gear 303 through the outer spline strip 2061 and is splinedly connected to the spline hole 3031. It should be noted that the spline strip 2061 on the outer side of the telescopic tube 206 forms a spline connection with the spline hole 3031 inside the second bevel gear 303, so that the telescopic tube 206 can move telescopically within the spline hole 3031 inside the second bevel gear 303 through the outer spline strip 2061; at the same time, when the second bevel gear 303 rotates, the spline connection between the inner spline hole 3031 and the spline strip 2061 drives the telescopic tube 206 to rotate.

[0023] like Figures 11 to 12 As shown, the limiting assembly 4043 consists of a limiting wheel, a locking pawl, and a return spring. The limiting wheel is fixedly sleeved on one side of the linkage bevel gear 4042. One end of the locking pawl is mounted on the inner wall of the rotating disk 4012 via a rotating shaft, and the other end of the locking pawl is dynamically engaged with the limiting wheel. One end of the return spring is fixedly mounted on the inner wall of the rotating disk 4012, and the other end of the return spring is fixedly mounted on one side of the locking pawl. It should be noted that when the linkage bevel gear 4042 rotates, it drives the limit wheel to rotate. The rotating limit wheel actuates the locking pawl to pull the return spring. The return force of the return spring pulls the locking pawl to reset. When the limit wheel rotates in the opposite direction, one end of the reset locking pawl locks the limit wheel, so that the limit wheel can only rotate in one direction, thereby achieving the purpose of locking the rotation direction of the linkage bevel gear 4042.

[0024] like Figures 1 to 2 As shown, a nitrogen storage tank 102 is fixedly installed on the back of the resistance furnace 1. The output end of the nitrogen storage tank 102 is connected to one side of the top of the resistance furnace 1 through a solenoid valve tube. A cyclone dust collector 105 is installed on the other side of the top of the resistance furnace 1 through a solenoid valve tube. It should be noted that the nitrogen storage tank 102 replaces the air in the resistance furnace 1 with nitrogen through the open solenoid valve tube. Under the inert atmosphere, the salt melt remains pure, avoiding the introduction of oxidizing impurities. The exhaust gas is treated by the cyclone dust collector 105 and then sent to the heat recovery mechanism to reduce exhaust gas pollution and improve heat utilization.

[0025] Based on the explanations and teachings of the foregoing specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and alterations to the present invention should also fall within the protection scope of the claims of the present invention. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on the present invention.

Claims

1. A calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting, comprising a resistance furnace (1), a reciprocating drive mechanism (2), and a slag skimming drive mechanism (3), characterized in that, It also includes a first disturbance frame (4) and a second disturbance frame (5) that are movably installed inside the resistance furnace (1), with the first disturbance frame (4) located above the second disturbance frame (5). A lifting mechanism (103) is fixedly installed on the back of the outside of the resistance furnace (1), and a sealing cover (104) is fixedly installed on the top of the lifting mechanism (103). The reciprocating drive mechanism (2) is fixedly installed at the top of the lifting mechanism (103), and extends through the sealing cover (104) into the interior of the resistance furnace (1). The reciprocating drive mechanism (2) consists of a bracket (201), a drive motor (202), a transmission bevel gear set (203), two worm gears (204), a linkage shaft (205), a telescopic tube (206), and a telescopic rod (207). The drive motor (202) is fixedly installed at the top of the bracket (201), and the transmission bevel gear set (203) is rotatably installed on one side of the bracket (201). The transmission bevel gear set (203) is connected to the output end of the drive motor (202). The back of each worm gear (204) is rotatably mounted on one side of the bracket (201), and the two worm gears (204) are meshed with the transmission bevel gear set (203); the linkage shaft (205) is fixedly mounted on the front of the two worm gears (204), and the linkage shaft (205) is drivenly connected to the top of the telescopic tube (206) and the telescopic rod (207); the telescopic rod (207) is movably mounted inside the telescopic tube (206), and one end of the telescopic tube (206) and the telescopic rod (207) extends into the inside of the resistance furnace (1), and the first disturbance frame (4) is fixedly mounted at the bottom end of the telescopic tube (206), and the second disturbance frame (5) is fixedly mounted at the bottom end of the telescopic rod (207); The skimming drive mechanism (3) is fixedly installed at the bottom of the bracket (201). The skimming drive mechanism (3) consists of a servo motor (301), a first bevel gear (302) and a second bevel gear (303). The first bevel gear (302) is fixedly installed at the output end of the servo motor (301), and the second bevel gear (303) is rotatably installed at the top of the sealing cover (104), and the second bevel gear (303) is meshed with the first bevel gear (302). The first disturbance frame (4) is composed of a mounting base (401), multiple disturbance plates (402), a cleaning ring (403), a skimming assembly (404), and a transmission assembly (405). The mounting base (401) is composed of a mounting plate (4011) and a rotating plate (4012), and the rotating plate (4012) is rotatably mounted on the top of the mounting plate (4011). The transmission assembly (405) consists of a face gear (4051), a first half-tooth bevel gear (4052), a drive bevel gear (4053), and a second half-tooth bevel gear (4054). The face gear (4051) is rotatably mounted inside the mounting plate (4011). The first half-tooth bevel gear (4052) is fixedly mounted on the top of the face gear (4051). The second half-tooth bevel gear (4054) is fixedly mounted on the top inside the rotating plate (4012). The drive bevel gear (4053) is located between the first half-tooth bevel gear (4052) and the second half-tooth bevel gear (4054) and dynamically meshes with them. The drive bevel gear (4053) is fixedly mounted at the bottom end of the telescopic tube (206). The cleaning ring (403) is sleeved on the outside of the mounting base (401). Multiple disturbance plates (402) are arranged in a ring array between the mounting base (401) and the cleaning ring (403). One end of each disturbance plate (402) is equipped with a rotating bevel gear (4021) via a shaft, and the rotating bevel gear (4021) meshes with the face gear (4051). One end of the skimming assembly (404) is rotatably mounted on the outside of the mounting plate (4011). The skimming assembly (404) consists of a skimming rod (4041), a linkage bevel gear (4042), and a limiting assembly (4043). The linkage bevel gear (4042) is mounted on one end of the skimming rod (4041) via a shaft, and the linkage bevel gear (4042) extends into the interior of the rotating plate (4012) and dynamically meshes with the flipping bevel gear (4021). The limiting assembly (4043) is fixedly sleeved on the outside of the linkage bevel gear (4042), and the limiting assembly (4043) is fixedly mounted on the inner wall of the rotating plate (4012). The reciprocating drive mechanism (2) drives the first disturbance frame (4) and the second disturbance frame (5) to reciprocate relative to each other inside the resistance furnace (1). The reciprocating first disturbance frame (4) and the second disturbance frame (5) agitate and stir the salt melt inside the resistance furnace (1). During the skimming operation, the first disturbance frame (4) is moved up to the set position, and the skimming drive mechanism (3) is started to drive the first disturbance frame (4) to perform the skimming operation. Specifically, the servo motor (301) in the skimming drive mechanism (3) drives the first bevel gear (302) to rotate. The rotating first bevel gear (302) drives the telescopic tube (206) to rotate through the meshing second bevel gear (303). The rotating telescopic tube (206) drives the transmission assembly (405) to operate. The transmission assembly (405) drives the drive bevel gear (4053) to rotate. The rotating drive bevel gear (4053) drives the drive bevel gear (4053) to rotate. The dynamic meshing of the first half-tooth bevel gear (4052) drives the face gear (4051) to rotate intermittently. The intermittently rotating face gear (4051) drives the corresponding disturbance plate (402) to rotate synchronously through multiple meshing flip bevel gears (4021), forming a closed state to isolate the scum on the surface of the salt melt from the salt melt. At the same time, the rotating flip bevel gear (4021) drives the meshing scum skimming assembly (404) to flip, so that the scum skimming assembly (404) rotates to the scum skimming state. The continuously rotating drive bevel gear (4053) disengages from the first half-tooth bevel gear (4052) and dynamically meshes with the second half-tooth bevel gear (4054). The rotating drive bevel gear (4053) drives the rotating disk (4012) to rotate through the dynamically meshing second half-tooth bevel gear (4054), which in turn drives the scum skimming assembly (404) to rotate to scrape off the isolated scum.

2. The calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 1, characterized in that: The transmission bevel gear set (203) consists of a driving bevel gear (2031), a driven bevel gear (2032), and a worm gear (2033). The driving bevel gear (2031) is fixedly connected to the output end of the drive motor (202) via a shaft. The driven bevel gear (2032) is rotatably mounted on one side of the bracket (201) and meshes with the driving bevel gear (2031). The worm gear (2033) is fixedly mounted on the bottom end of the driven bevel gear (2032), and two worm wheels (204) are symmetrically distributed on both sides of the worm gear (2033) and mesh with the worm gear (2033).

3. The calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 1, characterized in that: The linkage shaft (205) consists of two drive shafts (2051), two first transmission shafts (2052), a first bushing (2053), two second transmission shafts (2054), two third transmission shafts (2055), and a second bushing (2056). One end of each of the two drive shafts (2051) is fixedly mounted on the front of the two worm gears (204). The other end of each drive shaft (2051) is rotatably connected to one end of each of the two first transmission shafts (2052) and one end of each of the two second transmission shafts (2054) via bolts. The other end of each of the two first transmission shafts (2052) is rotatably connected to both ends of the first bushing (2053) via bolts. The other end of each of the two second transmission shafts (2054) is movably connected to one end of each of the two third transmission shafts (2055) via bolts. The other end of each of the two third transmission shafts (2055) is rotatably connected to both ends of the second bushing (2056) via bolts.

4. The calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 3, characterized in that: The telescopic tube (206) is equipped with a spline bar (2061) in an annular array on its outer side. The top ends of the telescopic tube (206) and the telescopic rod (207) are fixedly installed with a sleeve end (2062). The first bushing rod (2053) is rotatably sleeved on the outside of the sleeve end (2062) at the top end of the telescopic rod (207), and the second bushing rod (2056) is rotatably sleeved on the outside of the sleeve end (2062) at the top end of the telescopic tube (206).

5. The calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 1, characterized in that: The second bevel gear (303) has a spline hole (3031) inside. The telescopic tube (206) passes through the spline hole (3031) inside the second bevel gear (303) through the outer spline strip (2061) and is splined to the spline hole (3031).

6. The calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 1, characterized in that: The limiting component (4043) consists of a limiting wheel, a locking pawl, and a return spring. The limiting wheel is fixedly sleeved on one side of the linkage bevel gear (4042). One end of the locking pawl is mounted on the inner wall of the rotating disk (4012) through a rotating shaft, and the other end of the locking pawl is dynamically engaged with the limiting wheel. One end of the return spring is fixedly mounted on the inner wall of the rotating disk (4012), and the other end of the return spring is fixedly mounted on one side of the locking pawl.

7. The calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 1, characterized in that: The cleaning ring (403) has a slag skimming port (4031) on one side of its top, and the cleaning ring (403) is in contact with the inner wall of the electric resistance furnace (1).

8. The calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 1, characterized in that: An impurity collection tank (101) is installed through the top of the outside of the resistance furnace (1), and the slag skimming port (4031) is dynamically connected to the slag inlet of the impurity collection tank (101).

9. A calcination apparatus for producing high-pressure salt cores based on engine cylinder head casting according to claim 1, characterized in that: A nitrogen storage tank (102) is fixedly installed on the back of the resistance furnace (1). The output end of the nitrogen storage tank (102) is connected to one side of the top of the resistance furnace (1) through a solenoid valve tube. A cyclone dust collector (105) is installed on the other side of the top of the resistance furnace (1) through a solenoid valve tube.

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