A sintering apparatus and process for alumina ceramics

Abstract

The application relates to a sintering equipment and process of an alumina ceramic, and belongs to the technical field of sintering equipment. The structure of the sintering equipment comprises a sintering furnace device and a waste gas separation device. The sintering furnace device comprises a furnace body, a furnace door arranged on the furnace body, a smoke exhaust port arranged at the top of one side of the furnace body, and an exhaust pipeline arranged at one end of the smoke exhaust port and in communication with the inside of the furnace body. A pressure tapping hole is arranged in the horizontal section of the exhaust pipeline. A pulse vibration assembly is arranged outside the turning section of the exhaust pipeline. A branch pressure lead pipe is arranged on the pressure tapping hole and in communication with the pulse vibration assembly. One end of the exhaust pipeline is in communication with the smoke exhaust port, and the other end of the exhaust pipeline is in communication with the waste gas separation device. A slag removal port is arranged at the bottom of the vertical section of the exhaust pipeline. A heating element is arranged in the inside of the furnace body. The application has the technical effects of automatic cleaning of the exhaust pipeline and long-time stable and continuous production of the equipment.

Description

Technical Field

[0001] This application relates to the technical field of sintering equipment, and in particular to a sintering equipment and process for alumina ceramics. Background Technology

[0002] Alumina ceramics, with their high hardness, corrosion resistance, and excellent insulation properties, are widely used in electronic components, precision machinery, and wear-resistant parts. After alumina ceramics are formed, they require two core processes: debinding and high-temperature sintering. The industry generally uses sintering furnaces for heating. During the sintering process, the organic binder in the green body decomposes under heat, generating high-temperature waste gas mixed with dust and sticky tar. To meet environmental protection requirements, waste gas collection, pipeline self-cleaning, and tail gas purification devices have become essential components of the entire sintering equipment. Existing alumina ceramic sintering equipment relies solely on the furnace body with a simple exhaust pipe and water washing box to treat waste gas. The waste gas pipeline is prone to tar and dust accumulation, causing blockages. Furthermore, the equipment lacks an effective energy recovery and utilization structure. The waste heat from the high-temperature waste gas generated during the sintering process is directly emitted with the tail gas, resulting in a large amount of heat energy being wasted. The overall heating energy consumption of the sintering furnace is high, and the energy utilization rate is low, failing to meet the energy-saving and environmentally friendly production requirements of tail gas purification and waste heat recovery.

[0003] Patent (CN 108592643) A) discloses a sintering furnace exhaust gas separation device, including a furnace body, a first cylinder, a filter chamber, and a spray chamber. An exhaust pipe is connected to the top of the furnace body. The exhaust pipe has a buffer chamber. A rotating shaft is rotatably connected to the side wall of the buffer chamber. A cam and several blades are coaxially and fixedly connected to the rotating shaft. The blades are located inside the buffer chamber. A nozzle for spraying flames is installed on the inner wall of the buffer chamber. A first piston is slidably connected inside the first cylinder. A first piston rod is fixedly connected to the first piston, and the first piston rod abuts against the cam. An exhaust pipe connects the first cylinder and the buffer chamber. The exhaust pipe connects to the filter chamber, and an exhaust pipe connects the filter chamber and the spray chamber. The above patent can utilize the buffer chamber blades, cam-piston mechanism, and filter chamber / spray chamber to complete the combustion pretreatment and multi-stage impurity separation of sintering exhaust gas. However, it is limited to relying on the impact of the flue gas inside the furnace on the blades for power, and can only perform intermittent pretreatment of the exhaust gas at a fixed frequency. It cannot effectively and automatically clean the accumulated tar and dust on the inner wall of the sintering exhaust gas pipeline.

[0004] Regarding the aforementioned technologies, the inventors believe that the poor self-cleaning ability of the exhaust gas pipeline in alumina ceramic sintering equipment affects the stable and continuous production of the equipment. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a sintering equipment and process for alumina ceramics.

[0006] Firstly, the sintering equipment for alumina ceramics provided in this application adopts the following technical solution: A sintering device for alumina ceramics includes a sintering furnace and a waste gas separation device. The sintering furnace includes a furnace body with a furnace door. A flue gas outlet is located on the top of one side of the furnace body. One end of the flue gas outlet is connected to the interior of the furnace body, and the other end is connected to an exhaust pipe. A pressure tap is provided on the side wall of the horizontal section of the exhaust pipe. A pulse vibration assembly is provided on the outer side of the bend section of the exhaust pipe. A branch pressure tap is provided on the pressure tap, and the pressure tap is connected to the pulse vibration assembly through the branch pressure tap. One end of the exhaust pipe is connected to the flue gas outlet, and the other end is connected to the waste gas separation device. A slag removal port is provided at the bottom of the vertical section of the exhaust pipe. A heating element is installed inside the furnace body. A waste heat exchanger for energy recovery is connected to the exhaust pipe.

[0007] By adopting the above technical solution, the fluctuating pressure of the exhaust gas generated during the sintering furnace debinding stage is directly transmitted to the pulse vibration component as a power source through pressure taps and branch pressure pipes. When the exhaust gas flows through the bend section of the exhaust pipe, dust and tar are easily adhered and accumulated due to inertia. The pulse vibration component is arranged on the outside of the bend section to directly apply vibration to the bend to remove the accumulated scale. The vertical section relies on gravity to collect the fallen dirt and is equipped with a slag removal port to achieve centralized collection and regular discharge of dirt, avoid ash accumulation and blockage of bends and vertical pipes, ensure smooth flue gas flow, and stably discharge the exhaust gas from the furnace body. The exhaust pipe ensures that the generated pollutant-containing exhaust gas is transported in a closed loop throughout the process. After the furnace door is closed, the temperature rise inside the furnace to form a pressure difference that drives the directional flow of exhaust gas, ensuring that all the exhaust gas generated during debinding is transported to the exhaust gas separation device and preventing the diffusion of harmful flue gas.

[0008] Preferably, the pulse vibration assembly includes a mounting housing and an energy storage mechanism. A thin film is disposed inside the mounting housing, dividing the mounting housing into a driving cavity and an output cavity. One end of the branch pressure tap is connected to the pressure tapping hole, and the other end of the branch pressure tap is connected to the driving cavity of the mounting housing. A communication port is provided on the output cavity, and the output cavity is connected to the outside of the mounting housing through the communication port. The energy storage mechanism is disposed inside the output cavity.

[0009] By adopting the above technical solution, the branch pressure-introducing pipe introduces fluctuating flue gas pressure into the exhaust pipe and into the drive chamber. The output chamber is connected to the atmosphere through the connecting port to form a constant atmospheric pressure. The drive chamber and the output chamber continuously form an alternating pressure difference. The diaphragm reciprocates under the action of the pressure difference, directly converting the pulse pressure of the flue gas into linear reciprocating power. The flue gas only enters the drive chamber and will not directly contact the energy storage mechanism in the output chamber. The high-temperature flue gas containing tar and dust is blocked by the diaphragm, preventing the energy storage mechanism from being stuck by tar and dust, reducing the probability of failure, extending the service life, and reducing the frequency of maintenance.

[0010] Preferably, the energy storage mechanism includes a push rod, a main shaft, an energy storage unit, and a striking unit; the push rod is slidably disposed in the output cavity, and one end of the push rod is fixedly disposed in the middle of the diaphragm; the main shaft is rotatably disposed on the drive cavity of the mounting housing, and the energy storage unit is fixedly disposed at one end of the main shaft; the other end of the main shaft extends outside the mounting housing, and the striking unit is disposed at the other end of the main shaft; the other end of the push rod abuts against the energy storage unit.

[0011] By adopting the above technical solution, the thrust generated by the deformation of the film is concentrated on the push rod at the center of the film; the main shaft is rotated and assembled in the mounting housing, with an energy storage unit installed inside the housing at one end of the main shaft to receive the push rod thrust and store elastic potential energy, and a striking unit installed outside the housing at the other end of the main shaft to directly output the rotational power after energy storage and release; when releasing energy, the kinetic energy of the main shaft rotation is converted into the impact force of the pendulum, resulting in high dust removal vibration intensity and better peeling effect on stubborn tar and clumps of ash on the inner wall of the elbow.

[0012] Preferably, the energy storage unit includes a ratchet, a drive pawl, a drive lever, a toggle spring, a check pawl, and a spiral spring; the ratchet is fixedly mounted on one end of the main shaft; one end of the drive lever is rotatably mounted on the main shaft, and one end of the drive pawl is rotatably mounted on the other end of the main shaft lever, with the other end of the drive pawl abutting against the teeth of the ratchet; a limit block is provided at the other end of the main shaft lever to limit the rotation angle of the drive pawl; one end of the toggle spring is rotatably connected to the drive lever, and the other end of the toggle spring is rotatably connected to the wall of the drive cavity; the spiral spring is sleeved on the other end of the main shaft, one end of the spiral spring is fixedly connected to the main shaft, and the other end of the spiral spring is fixedly connected to the outside of the mounting housing; a release structure is provided on the side wall of the drive cavity, one end of the check pawl is mounted on the release structure, and the other end of the check pawl abuts against the teeth of the ratchet; a lever is provided on the side of the ratchet.

[0013] By adopting the above technical solution, the diaphragm pusher can only output short-stroke thrust with each small push. Relying on the drive pawl to move a single tooth of the ratchet wheel, the repeated flue gas pulse pressure gradually twists the spiral spring to continuously accumulate elastic potential energy. The small, intermittent pulse pressure of the exhaust pipe is continuously superimposed, and a large impact force is output when the energy is released, effectively shaking off stubborn tar and ash accumulation in the elbow, which is suitable for the working conditions of small pressure fluctuations in the sintering furnace. The limit block restricts the maximum rotation range of the drive pawl, so that the drive pawl always keeps in contact with the ratchet wheel teeth, and the pawl will not disengage from the tooth surface during the pusher's retraction and reset process. After the pusher is depressurized and retracts, it loses its pushing force. When force is applied, the actuating spring pulls the active rocker arm to rotate in the opposite direction and return to its original position, driving the pawl to return to its initial position simultaneously. The spiral spring is coaxially mounted on the main shaft, continuously winding and storing energy through multiple step rotations. After unlocking, the spring instantly rebounds, driving the main shaft to rotate. The instantaneous impact kinetic energy is much higher than that of conventional continuous vibration, resulting in a stronger effect on stripping agglomerated and highly viscous tar, and significantly reducing the probability of exhaust pipe blockage. During energy storage, the stop pawl presses against the ratchet teeth, restricting the ratchet to rotate only in one direction and counteracting the reverse rebound torque of the spiral spring. The lever rotates synchronously with the ratchet, and when the energy is stored to the preset angle, it directly touches the release structure.

[0014] Preferably, the striking unit includes a pendulum and an anvil; one end of the pendulum is fixedly disposed at the other end of the main shaft; the anvil is fixedly disposed on the outside of the bend section of the exhaust pipe, and the other end of the pendulum abuts against the anvil.

[0015] By adopting the above technical solution, the anvil is rigidly attached to the elbow wall, and the vibration generated by the pendulum hitting the anvil is directly transmitted to the entire elbow, covering all dust accumulation areas of the elbow. Compared with directly hitting the thin wall of the exhaust pipe, the anvil disperses the impact stress, avoiding deformation and cracking of the exhaust pipe due to long-term impact, and extending the service life of the exhaust pipe.

[0016] Preferably, the release structure includes a release rod, a drive rod, a piston rod, and a drive cylinder; the drive cylinder is fixedly mounted on the side wall of the drive chamber; one end of the piston rod is slidably mounted inside one end of the drive cylinder; one end of the release rod is fixedly mounted on the other end of the piston rod; the other end of the release rod is used to abut against the lever on the side of the ratchet; one end of the drive rod is slidably mounted inside the other end of the drive cylinder; one end of the drive rod is provided with a connecting platform, a mounting shaft is fixedly mounted on the connecting platform, one end of the check pawl is rotatably mounted on the mounting shaft, a torsion spring is sleeved on the mounting shaft, one end of the torsion spring is fixedly connected to the mounting shaft, and the other end of the torsion spring is fixedly connected to the check pawl.

[0017] By adopting the above technical solution, when the ratchet side lever rotates and presses against the release lever, the thrust is directly transmitted to the piston rod and simultaneously drives the drive rod to move. The ratchet can complete the separation and unlocking of the check pawl instantly when it rotates to the preset energy storage angle. The potential energy of the spiral spring can be released instantaneously, ensuring the stability of the impact vibration force. The check pawl is separated from the ratchet tooth surface by synchronous translation based on the connecting platform. Unlike the small swing unlocking of the pawl, the translational separation can completely disengage from the gear teeth. There is no problem of the pawl getting stuck between the teeth and unable to release energy, which greatly improves the reliability of the mechanism. The torsion spring continuously drives the check pawl to press against the ratchet teeth, reliably locking the ratchet throughout the energy storage process and preventing the spiral spring from prematurely rebounding and releasing energy.

[0018] Preferably, a cleaning assembly is provided in the vertical section of the exhaust pipe. The cleaning assembly includes an annular scraper, a guide rod, a return spring, a mounting bracket, and a drive cam. The drive cam is fixedly mounted on the other end of the main shaft. The annular scraper is slidably mounted inside the exhaust pipe. A drive groove is provided on the side of the vertical section of the exhaust pipe, and a sealing corrugated sleeve is provided on the drive groove. The mounting bracket is fixedly mounted on the outer wall of the exhaust pipe. The guide rod is slidably mounted on the mounting bracket. The return spring is sleeved on the guide rod. One end of the return spring is fixedly mounted on the guide rod, and the other end of the return spring is fixedly mounted on the mounting bracket. One end of the guide rod passes through the sealing corrugated sleeve and is fixedly connected to the annular scraper. The other end of the guide rod abuts against the drive cam.

[0019] By adopting the above technical solution, the drive cam is fixed at the end of the main shaft. When the main shaft releases energy to strike the elbow, it simultaneously drives the cam to rotate. The annular scraper slides along the inner wall of the exhaust pipe, completely scraping away the sticky tar and dust clumps adhering to the entire vertical section of the pipe wall, ensuring the long-term stability of the exhaust pipe's ventilation cross-section and avoiding the furnace body pressure buildup and poor exhaust gas discharge caused by the narrowing of the exhaust pipe. The mounting bracket is fixed to the outer wall of the exhaust pipe, and the guide rod is slidably limited, driving the annular scraper to slide smoothly. The return spring pulls the guide rod to keep it in contact with the drive cam. When the drive cam rotates to the lowest position, it drives the annular scraper back to the initial position and scrapes again.

[0020] Preferably, the exhaust gas separation device includes a water bath, an inlet pipe, and an outlet pipe; one end of the inlet pipe is connected to the other end of the exhaust pipe; the other end of the inlet pipe is located inside the water bath and extends downward to the bottom of the water bath; the outlet pipe is located at the top of the water bath and is connected to the interior of the water bath; a water exchange port is provided at the lower part of one side of the water bath.

[0021] By adopting the above technical solution, the exhaust gas slowly rises after entering the water body through the inlet pipe, forming a large number of bubbles. This significantly prolongs the contact time between the exhaust gas and the washing water, allowing tar droplets and solid dust in the exhaust gas to be fully adsorbed and captured by the water. Compared with the high-level air intake structure, the dust and tar removal efficiency is significantly improved, reducing the concentration of pollutants in the exhaust gas. The light gas purified by water washing naturally rises and collects in the upper space of the water bath. The exhaust pipe at the top allows for unobstructed discharge of the purified gas, preventing the accumulation and pressure buildup of gas inside the tank. This ensures the continuous and smooth transport of exhaust gas in the front-end exhaust pipe and does not affect the pressure stability of the sintering furnace sizing process. Since dust and tar are denser than water, they settle and accumulate at the bottom of the water bath. A water exchange port at the bottom allows for the simultaneous discharge of deposited sludge and wastewater during water changes. Regularly replacing the clean water ensures the continuous washing and adsorption capacity of the water body, preventing wastewater saturation and purification failure after long-term use.

[0022] Preferably, the heating element is a silicon molybdenum rod, the heating part of which is disposed on the side wall inside the furnace body, and the cold end of which passes through the side wall of the furnace body and is connected to an external power source.

[0023] Secondly, the sintering process for alumina ceramics provided in this application adopts the following technical solution: A sintering process for alumina ceramics, Step S1: Place the alumina ceramic green body inside the sintering furnace and close the furnace door; Step S2: The furnace body is heated by heating elements installed inside the furnace body, raising the temperature inside the furnace body from room temperature to the first temperature, causing the organic binder in the alumina ceramic green body to decompose and be discharged. The generated waste gas is discharged to the exhaust pipe through the exhaust port on the top side of the furnace body, and then to the waste gas separation device through the exhaust pipe. Step S3: Continue heating to the second temperature for sintering to densify the alumina ceramic green body; Step S4: After sintering is completed, the heating element stops heating and the furnace is cooled to room temperature. Then, the furnace door is opened and the finished alumina ceramic product is taken out.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. The thrust generated by the deformation of the film is concentrated on the push rod at the center of the film; the main shaft is rotated and assembled in the mounting housing. One end of the main shaft is equipped with an energy storage unit inside the housing to receive the push rod thrust and store elastic potential energy. The other end of the main shaft extends out of the housing and is equipped with a striking unit to directly output the rotational power after energy storage and release. When releasing energy, the kinetic energy of the main shaft rotation is converted into the impact force of the pendulum, resulting in high dust removal vibration intensity and better peeling effect on stubborn tar and clumps of ash on the inner wall of the elbow.

[0025] 2. The drive cam is fixed to the end of the main shaft. When the main shaft releases energy to strike the elbow, it simultaneously drives the cam to rotate. The annular scraper slides along the inner wall of the exhaust pipe, completely scraping away the sticky tar and dust clumps adhering to the entire circumference of the vertical section of the pipe, ensuring the long-term stability of the exhaust pipe's ventilation cross-section and preventing the furnace body from becoming pressurized and the exhaust gas from being poorly discharged due to the narrowing of the exhaust pipe. The mounting bracket is fixed to the outer wall of the exhaust pipe, which slides and limits the guide rod, driving the annular scraper to slide smoothly. The return spring pulls the guide rod to keep it in contact with the drive cam. When the drive cam rotates to the lowest position, it drives the annular scraper back to the initial position and scrapes again. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure in the embodiment.

[0027] Figure 2 This is a cross-sectional schematic diagram of the internal structure of the sintering furnace device and the waste gas separation device in the embodiment.

[0028] Figure 3 yes Figure 2 A magnified view of part A in the middle.

[0029] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the pulse vibration component in the embodiment.

[0030] Figure 5 This is a cross-sectional schematic diagram of the internal structure of the exhaust pipe in the embodiment.

[0031] Explanation of reference numerals in the attached drawings: 1. Sintering furnace device; 11. Furnace body; 111. Furnace door; 112. Exhaust port; 2. Waste gas separation device; 21. Water bath; 211. Water exchange port; 22. Inlet pipe; 23. Outlet pipe; 3. Exhaust pipe; 31. Pressure tap; 32. Slag removal port; 4. Pulse vibration assembly; 41. Mounting housing; 411. Membrane; 412. Drive chamber; 413. Output chamber; 42. Energy storage mechanism; 421. Push rod; 422. Main shaft; 423. Energy storage unit; 4231. Ratchet; 4232. Drive pawl; 4233. Active rocker arm; 4234. Actuating spring; 4235. Check valve. 4236. Pawl; 4237. Spiral spring; 4238. Limiting block; 4239. Lever; 424. Striking unit; 4241. Pendulum; 4242. Anvil; 425. Release structure; 4251. Release rod; 4252. Drive rod; 4253. Piston rod; 4254. Drive cylinder; 4255. Connecting platform; 4256. Mounting shaft; 4257. Torsion spring; 5. Branch pressure pipe; 6. Heating element; 61. Silicon molybdenum rod; 7. Cleaning assembly; 71. Annular scraper; 72. Guide rod; 73. Return spring; 74. Mounting bracket; 75. Drive cam; 76. Drive groove; 77. Sealing bellows sleeve. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0033] Example 1: This application discloses a sintering apparatus for alumina ceramics. (Refer to...) Figures 1 to 5 The system includes a sintering furnace apparatus 1 and a waste gas separation device 2 for removing impurities from the waste gas through liquid capture. The sintering furnace apparatus 1 includes a furnace body 11, a furnace door 111, and a flue gas outlet 112 on the top of one side of the furnace body 11. One end of the flue gas outlet 112 communicates with the interior of the furnace body 11, and the other end of the flue gas outlet 112 is provided with an exhaust pipe 3. A pressure tapping hole 31 is provided on the side wall of the horizontal section of the exhaust pipe 3. A pulse vibration assembly 4 is provided on the outer side of the bend section of the exhaust pipe 3, and a pressure tapping hole 31 is provided with... There is a branch pressure pipe 5, and the pressure tap 31 is connected to the pulse vibration component 4 through the branch pressure pipe 5; one end of the exhaust pipe 3 is connected to the flue gas outlet 112, and the other end of the exhaust pipe 3 is connected to the waste gas separation device 2. The waste gas, carrying residual dust and tar, is continuously sent to the waste gas separation device 2 for washing and purification, realizing a complete waste gas treatment process; a slag removal port 32 is provided at the bottom of the vertical section of the exhaust pipe 3; a heating element 6 is provided inside the furnace body 11; a flue gas waste heat exchanger for energy recovery and utilization is connected to the exhaust pipe.

[0034] Reference Figures 1 to 5The sintering furnace device 1 and the waste gas separation device 2 form a flue gas conveying channel through the exhaust pipe 3. The dust- and tar-containing waste gas generated by the high temperature of the workpieces in the sintering furnace device 1 is conveyed and processed in an orderly manner from the inside of the furnace body 11 to the outside by relying on the pressure difference formed by the temperature rise in the furnace. The alumina ceramic green body is placed in the inner cavity of the furnace body 11, and the furnace body 11 is sealed by closing the furnace door 111. Heating elements 6 are arranged on the inner wall of the furnace body 11. After being powered on, the furnace body 11 is heated in sections. The organic binder in the green body decomposes under heat to produce Mixed exhaust gas; a flue gas outlet 112 is opened on the top side of the furnace body 11, directly connecting the inner cavity of the furnace body 11 to the exhaust pipe 3. During the heating process, the gas pressure inside the furnace body 11 is higher than that outside the exhaust pipe 3. The exhaust gas continuously flows from the flue gas outlet 112 into the rear exhaust pipe 3, completing the unified collection and discharge of the flue gas; the flue gas pressure inside the furnace body 11 is not a constant value, but continuously generates pulsed pressure fluctuations; the exhaust gas carrying the fluctuating pulsed pressure flows through the horizontal section of the exhaust pipe 3, and the static pressure on the inner wall of the exhaust pipe 3 changes synchronously. The flue gas inside the furnace flues synchronously. A pressure tapping hole 31 is opened on the side wall of the horizontal section, and a branch pressure tapping pipe 5 is connected to the external side of the pressure tapping hole 31. The pulse pressure of the exhaust pipe 3 is continuously transmitted to the outer pulse vibration component 4 through the pressure tapping hole 31 and the branch pressure tapping pipe 5. The flue gas pressure fluctuation formed under the sintering condition is used to continuously deliver intermittent pulse power to the pulse vibration component 4. When the exhaust gas flows through the turning section, the flow direction changes sharply. Dust and tar are easily accumulated and agglomerated due to inertial impact on the pipe wall. Therefore, the pulse vibration component 4 is arranged on the outer wall of the turning section. The branch pressure tapping pipe 5 continuously delivers alternating pulse pressure. The pulse vibration component 4 completes the energy storage and impact vibration action, and the vibration peels off the ash and tar adhering to the inner wall of the bend. The dust and tar that are dislodged by the vibration in the turning section settle down along the exhaust pipe 3 by gravity. The vertical section of the exhaust pipe 3 is arranged vertically, and a slag cleaning port 32 is set at the bottom. The settled dirt is collected here. The slag cleaning port 32 is opened periodically to discharge the dirt, prevent the exhaust pipe 3 from being blocked, and ensure the stable transmission of flue gas and pulse pressure.

[0035] Reference Figure 2The exhaust gas separation device 2 includes a water bath tank 21, an inlet pipe 22, and an outlet pipe 23. One end of the inlet pipe 22 is connected to the other end of the exhaust pipe 3. The other end of the inlet pipe 22 is located inside the water bath tank 21 and extends downward to the bottom of the water bath tank 21. The outlet pipe 23 is located at the top of the water bath tank 21 and is connected to the interior of the water bath tank 21. A water exchange port 211 is provided at the lower part of one side of the water bath tank 21. One end of the inlet pipe 22 is connected to the exhaust pipe 3 to receive the exhaust gas delivered from the front end. The other end of the inlet pipe 22 extends downward to the bottom of the inner cavity of the water bath tank 21, and the exhaust gas inlet pipe 22 enters the deep part of the water body. This allows the exhaust gas to slowly float upward from the bottom of the water, prolonging the contact time between the exhaust gas and the washing water. The dust and tar droplets carried in the exhaust gas can fully contact the water body, improving the pollutant interception effect. 1. The interior is pre-filled with washing water. As the exhaust gas rises from the bottom of the water, it forms a large number of bubbles. The solid dust, tar, and organic matter contained in the exhaust gas are adsorbed, captured, and retained in the water, completing the primary purification of the exhaust gas and removing most of the particulate matter and volatile tar impurities. The discharge pipe 23 is installed on the top of the water bath 21 and is connected to the internal space of the tank. After being thoroughly washed by the water and the dust and tar are removed, the clean gas floats and gathers in the upper cavity of the water bath 21, and is finally discharged to the outside through the top discharge pipe 23, achieving compliant discharge. A water exchange port 211 is set on the lower side of the water bath 21. After long-term use, a large amount of dust and tar pollutants will accumulate in the water, reducing the washing effect. The water exchange port 211 at the bottom facilitates the discharge of turbid wastewater and can also replenish fresh water to continuously maintain the washing and purification capacity of the water bath 21 and ensure stable exhaust gas treatment effect.

[0036] Reference Figure 2 The heating element 6 is a silicon molybdenum rod 61. The heating part of the silicon molybdenum rod 61 is located on the side wall inside the furnace body 11. The cold end of the silicon molybdenum rod 61 passes through the side wall of the furnace body 11 and is connected to an external power supply. After the external power supply is turned on, the current is transmitted from the cold end to the heating part. The heating part generates high temperature and directly radiates heat to the inner cavity of the furnace body 11 and the alumina ceramic green body. The low temperature debinding and high temperature sintering processes can be completed in stages. The heat is evenly distributed inside the furnace body 11 to ensure that the green body is heated evenly. The cold end passes through the furnace wall to isolate the high temperature inside the furnace body 11 and avoid overheating and burning of the wiring power supply part. It continuously and stably supplies heat to the furnace body 11 and continuously decomposes the organic binder of the green body and generates dust and tar-containing waste gas.

[0037] Reference Figure 3 and Figure 4The pulse vibration assembly 4 includes a mounting housing 41 and an energy storage mechanism 42. A diaphragm 411 is disposed inside the mounting housing 41, dividing the mounting housing 41 into a driving chamber 412 and an output chamber 413. One end of a branch pressure tapping pipe 5 is connected to a pressure tapping hole 31, and the other end of the branch pressure tapping pipe 5 is connected to the driving chamber 412 of the mounting housing 41. A communication port is provided on the output chamber 413, through which the output chamber 413 communicates with the outside of the mounting housing 41. The energy storage mechanism 42 is disposed inside the output chamber 413. The energy storage mechanism 42 includes a pusher... The device comprises a push rod 421, a main shaft 422, an energy storage unit 423, and a striking unit 424. The push rod 421 is slidably disposed within the output cavity 413, with one end of the push rod 421 fixedly disposed in the middle of the diaphragm 411. The main shaft 422 is rotatably disposed on the drive cavity 412 of the mounting housing 41, with the energy storage unit 423 fixedly disposed at one end of the main shaft 422. The other end of the main shaft 422 extends outside the mounting housing 41, and the striking unit 424 is disposed at the other end of the main shaft 422. The other end of the push rod 421 abuts against the energy storage unit 423.

[0038] Reference Figure 3 and Figure 4A flexible membrane 411 is installed inside the housing 41, which seals and divides the interior of the housing into two independent chambers: a drive chamber 412 and an output chamber 413. A branch pressure tap 5 connects the pressure tap 31 to the drive chamber 412. The fluctuating pulse flue gas pressure in the exhaust pipe 3 continuously flows into the drive chamber 412, causing the pressure in the drive chamber 412 to rise and fall synchronously with the flue gas pressure. The output chamber 413 has a connection port that directly communicates with the outside atmosphere, and the interior of the output chamber 413 is always maintained at atmospheric pressure. The pressure difference drives the membrane 411 to deform. When the flue gas pressure in the drive chamber 412 increases, a pressure difference is formed between the drive chamber 412 and the output chamber 413. The pressure pushes the diaphragm 411 to bulge and deform towards the output chamber 413 on the normal pressure side. When the flue gas pressure in the exhaust pipe 3 drops and the pressure in the drive chamber 412 decreases, the pressure difference disappears, and the diaphragm 411 rebounds and resets itself due to its own elasticity. The energy conversion of the reciprocating expansion and contraction of the diaphragm 411 is achieved through the flue gas pulse pressure. The push rod 421 is slidably assembled inside the output chamber 413, with one end of the push rod 421 rigidly fixed at the center of the diaphragm 411. 1. The other end abuts against the energy storage unit 423; when the diaphragm 411 repeatedly bulges and rebounds with the pulse pressure of the drive chamber 412, it directly drives the push rod 421 to reciprocate linearly along the output chamber 413: when the drive chamber 412 pressurizes, the diaphragm 411 pushes outward and the push rod 421 extends forward to push the energy storage unit 423; when the drive chamber 412 depressurizes, the diaphragm 411 rebounds and the push rod 421 retracts and resets synchronously; each pressure fluctuation of the diaphragm 411 forms one reciprocating linear motion of the push rod 421, completing a single power output; the main shaft 422 is rotated and mounted on the mounting plate. On the housing 41, one end of the main shaft 422 is inside the housing and the energy storage unit 423 is fixed thereon. The other end of the main shaft 422 extends outward through the housing and the striking unit 424 is assembled on the outer end. The reciprocating linear motion of the push rod 421 applies intermittent thrust to the energy storage unit 423. The thrust is stored in the energy storage unit 423 in stages to store elastic potential energy. After the energy storage is completed, it is released all at once, which drives the main shaft 422 to rotate. The main shaft 422 then synchronously drives the outer striking unit 424 to perform impact vibration action, realizing the conversion of linear pressure pulse into instantaneous rotational impact power.

[0039] Reference Figure 3 and Figure 4The energy storage unit 423 includes a ratchet 4231, a drive pawl 4232, a drive lever 4233, a prying spring 4234, a check pawl 4235, and a spiral spring 4236. The ratchet 4231 is fixedly mounted on one end of the main shaft 422. One end of the drive lever 4233 is rotatably mounted on the main shaft 422, and one end of the drive pawl 4232 is rotatably mounted on the other end of the main shaft 422 lever, with the other end of the drive pawl 4232 abutting against the teeth of the ratchet 4231. A limit block 4237 is provided at the other end of the main shaft 422 lever to limit the rotation angle of the drive pawl 4232. One end of the prying spring 4234 is rotatably connected to the drive lever 4233, and the other end of the prying spring 4234 rotates against the wall of the drive cavity 412. The drive chamber 412 has a release structure 425 on its side wall. One end of the pawl 4235 is fixedly connected to the main shaft 422, and the other end of the pawl 4236 is fixedly connected to the outside of the mounting housing 41. A release structure 425 is provided on the side wall of the drive chamber 412. One end of the pawl 4235 is provided on the release structure 425, and the other end of the pawl 4235 abuts against the teeth of the ratchet 4231. A lever 4238 is provided on the side of the ratchet 4231. The striking unit 424 includes a pendulum 4241 and an anvil 4242. One end of the pendulum 4241 is fixedly provided on the other end of the main shaft 422. The anvil 4242 is fixedly provided on the outside of the bend section of the exhaust pipe 3, and the other end of the pendulum 4241 abuts against the anvil 4242.

[0040] Reference Figure 3 and Figure 4The ratchet 4231 is fixed to the inner end of the main shaft 422 and rotates synchronously with the main shaft 422. The active rocker arm 4233 is rotatably mounted on the main shaft 422 and can swing slightly around the main shaft 422. The driving pawl 4232 is hinged to the end of the active rocker arm 4233 away from the main shaft 422, and the end of the pawl is in contact with the side of the tooth of the ratchet 4231. When the push rod 421 extends forward with the pressure of the diaphragm 411, the head of the push rod 421 presses against the active rocker arm 4233, causing the active rocker arm 4233 to swing around the main shaft 422 toward the ratchet 4231. This drives the pawl 4232 to push forward simultaneously against a single tooth of the ratchet 4231, causing the ratchet 4231 and the main shaft 422 to rotate synchronously by one tooth position. The spiral spring 4236 is simultaneously twisted, accumulating a portion of elasticity. Potential energy; a limiting block 4237 is set at the end of the active rocker arm 4233. The limiting block 4237 limits the maximum rotation angle of the drive pawl 4232 away from the ratchet 4231, ensuring that the drive pawl 4232 always fits against the tooth surface of the ratchet 4231, avoiding pawl disengagement and failure, and stably realizing unidirectional actuation; the two ends of the actuation spring 4234 are respectively hinged to the active rocker arm 4233 and the cavity wall of the drive cavity 412; after the push rod 421 completes the push and retracts and resets with the pressure reduction of the diaphragm 411, the push rod 421 no longer presses the active rocker arm 4233. The tension of the actuation spring 4234 pulls the active rocker arm 4233 to rotate back and reset. The drive pawl 4232 returns to the initial position with the rocker arm, leaving stroke for the next push of the push rod 421, completing a single cycle. Transmission cycle: A spiral spring 4236 is fitted onto the extended section of the main shaft 422. One end of the spiral spring 4236 is fixed to the main shaft 422, and the other end is fixed to the outside of the mounting housing 41. The ratchet 4231 rotates one tooth per step, and the main shaft 422 rotates synchronously, continuously twisting the spiral spring 4236 and accumulating rotational potential energy. A check pawl 4235 is mounted on the release structure 425 on the side wall of the drive cavity 412. The end of the check pawl 4235 normally abuts against the teeth of the ratchet 4231. When the active rocker arm 4233 resets and there is a tendency for the ratchet 4231 to rotate in the opposite direction, the check pawl 4235 locks the teeth, restricting the ratchet 4231 to rotate only in one direction, preventing the spiral spring 4236 from rebounding and driving the ratchet 4231. 1. Reverse rotation ensures continuous superposition of energy storage through multiple pulse thrusts, preventing potential energy release midway. A lever 4238 is integrally mounted on the side of the ratchet 4231, serving as a trigger component for the release structure 425 after energy storage is complete. When the ratchet 4231 rotates to a preset angle as energy storage progresses, the lever 4238 contacts the release structure 425, releasing the locking constraint of the check pawl 4235. The pendulum 4241 is fixed to the extended end of the main shaft 422, and the anvil 4242 is rigidly fixed to the outer wall of the bend section of the exhaust pipe 3. When the check pawl 4235 unlocks and the spiral spring 4236 instantaneously releases all elastic potential energy, the main shaft 422 rotates, causing the pendulum 4241 to swing synchronously at high speed, with the end of the pendulum 4241 striking the anvil 4242.The mechanical vibration generated by the impact is directly transmitted to the elbow wall, shaking off tar and ash that have adhered to the inner wall of the bend due to airflow inertia, thus achieving automatic slag removal at the three elbows of the exhaust pipe.

[0041] Reference Figure 3 and Figure 4 The release structure 425 includes a release rod 4251, a drive rod 4252, a piston rod 4253, and a drive cylinder 4254. The drive cylinder 4254 is fixedly mounted on the side wall of the drive chamber 412. One end of the piston rod 4253 is slidably mounted inside one end of the drive cylinder 4254. One end of the release rod 4251 is fixedly mounted on the other end of the piston rod 4253. The other end of the release rod 4251 is used to abut against the lever 4238 on the side of the ratchet 4231. One end of the drive rod 4252 is slidably mounted inside the other end of the drive cylinder 4254. A connecting platform 4255 is provided at one end of the drive rod 4252. A mounting shaft 4256 is fixedly mounted on the connecting platform 4255. One end of the check pawl 4235 is rotatably mounted on the mounting shaft 4256. A torsion spring 4257 is sleeved on the mounting shaft 4256. One end of the torsion spring 4257 is fixedly connected to the mounting shaft 4256, and the other end of the torsion spring 4257 is fixedly connected to the check pawl 4235. Under normal conditions, the torsion spring 4257 continuously applies a rotational preload to the check pawl 4235, driving the end of the check pawl 4235 to always press against the teeth of the ratchet 4231, thereby achieving one-way locking of the ratchet 4231 and ensuring that the ratchet 4231 will not rotate in the opposite direction when the spiral spring 4236 is continuously storing energy.

[0042] Reference Figure 3 and Figure 4The push rod 421 continuously pushes the ratchet 4231 to rotate in a one-way forward step, and the lever 4238 on the side of the ratchet 4231 rotates synchronously. When the ratchet 4231 rotates to the preset energy storage angle, the lever 4238 presses against the release rod 4251, pushing the piston rod 4253 to slide into the drive cylinder 4254. When the piston rod 4253 retracts into the cylinder, the internal space of the cylinder is linked to the drive rod 4252 to extend outward. The drive rod 4252 drives the front connecting platform 4255 to move outward synchronously, and the check pawl 4235 hinged on the mounting shaft 4256 moves away from the outer edge teeth of the ratchet 4231 along with the platform. The check pawl 4235 disengages from the teeth of the ratchet 4231, the ratchet 4231 loses its one-way locking constraint, and the spiral spring 4236 instantly releases all its elastic potential energy, driving the main shaft 422 and the ratchet 4231 to high speed. The mechanism rotates, completing one impact knocking and dust removal action. The main shaft 422 and ratchet 4231 rotate in the opposite direction under the drive of the spiral spring 4236. The side lever 4238 of the ratchet 4231 rotates in the opposite direction with the ratchet 4231. After the rotation resets, it presses against the release lever 4251 again, applying a reverse thrust to the release lever 4251. The piston rod 4253 slides back out of the cylinder body. The reset of the piston rod 4253 drives the drive rod 4252 to retract into the drive cylinder 4254. The connecting platform 4255, the mounting shaft 4256, and the check pawl 4235 move back towards the ratchet 4231 in sync. With the assistance of the preload of the torsion spring 4257, the check pawl 4235 re-engages with the teeth of the ratchet 4231, restoring the one-way locking state of the ratchet 4231. The mechanism returns to the initial standby state, waiting for the next round of ratchet 4231 step-by-step energy storage.

[0043] Reference Figures 1 to 5A cleaning assembly 7 is installed in the vertical section of the exhaust pipe 3. The cleaning assembly 7 includes an annular scraper 71, a guide rod 72, a return spring 73, a mounting bracket 74, and a drive cam 75. The drive cam 75 is fixedly installed at the other end of the main shaft 422. The annular scraper 71 is slidably installed in the exhaust pipe 3. A drive groove 76 is provided on the side of the vertical section of the exhaust pipe 3, and a sealing corrugated sleeve 77 is provided on the drive groove 76. The mounting bracket 74 is fixedly installed on the outer wall of the exhaust pipe. The guide rod 72 is slidably installed on the mounting bracket 74. The return spring 73 is sleeved on the guide rod 72. One end of the return spring 73 is fixedly installed on the guide rod 72, and the other end of the return spring 73 is fixedly installed on the mounting bracket 74. One end of the guide rod 72 passes through the sealing corrugated sleeve 77 and the annular scraper. 71 is fixedly connected, and the other end of the guide rod 72 abuts against the drive cam 75; the drive cam 75 is coaxially fixed to the extended end of the main shaft 422 and rotates synchronously with the pendulum 4241; the mounting bracket 74 is fixed as a whole to the outer wall of the vertical section of the exhaust pipe, and the guide rod 72 slides through the mounting bracket 74, and the guide rod 72 can slide back and forth in the horizontal direction; a drive groove 76 is opened on the side wall of the vertical section of the exhaust pipe, and a sealing corrugated sleeve 77 is fitted at the groove opening. The guide rod 72 passes through the sealing corrugated sleeve 77 and is rigidly connected to the annular scraper 71 inside the exhaust pipe 3; the sealing corrugated sleeve 77 extends and retracts synchronously with the extension and retraction of the guide rod 72, and seals the gap of the drive groove 76 during the entire process of the guide rod 72's reciprocating sliding, preventing high-temperature smoke and tar dust in the exhaust pipe 3 from leaking outward, thus balancing the movement stroke and sealing performance.

[0044] Reference Figures 1 to 5 When the energy storage unit 423 unlocks and the spiral spring 4236 releases potential energy to drive the main shaft 422 to rotate at high speed, the drive cam 75 at the end of the main shaft 422 rotates synchronously with the main shaft 422; the outer edge contour of the drive cam 75 continuously presses against the guide rod 72, and the cam protrusion pushes the guide rod 72 to overcome the elastic force of the return spring 73 and slide into the vertical section of the exhaust pipe; the guide rod 72 passes through the sealing corrugated sleeve 77 and synchronously drives the annular scraper 71 to move axially inside the exhaust pipe 3, and the outer edge of the annular scraper 71 slides against the inner wall of the exhaust pipe 3, removing the attached... Tar, ash, and clumps of dirt on the vertical section of the pipe are scraped off as a whole. The scraped dirt falls downwards by gravity to the bottom cleaning port 32 of the exhaust pipe 3. As the main shaft 422 continues to rotate, the protruding part of the drive cam 75 rotates past the end of the guide rod 72, and the low profile part of the cam contacts the guide rod 72. The pre-tightening force of the return spring 73 is released, pulling the guide rod 72 to slide upwards, causing the annular scraper 71 to scrape again, and causing the annular scraper 71 to retract to the initial standby position, waiting for the next rotation of the main shaft 422 to drive the cam 75 to push again.

[0045] Example 2: This application discloses a sintering process for alumina ceramics.

[0046] A sintering process for alumina ceramics includes the following steps: Step S1: Place the alumina ceramic green body into the furnace body 11 of the sintering furnace device 1 and close the furnace door 111; Step S2: The interior of the furnace body 11 is heated by the heating element 6 installed inside the furnace body 11, raising the temperature inside the furnace body 11 from room temperature to the first temperature, causing the organic binder in the alumina ceramic green body to decompose and be discharged. The generated exhaust gas is discharged to the exhaust pipe 3 through the exhaust port 112 on the top side of the furnace body 11, and then discharged to the exhaust gas separation device 2 through the exhaust pipe 3. Step S3: Continue heating to the second temperature for sintering to densify the alumina ceramic green body; Step S4: After sintering is completed, the heating element 6 stops heating and cools down to room temperature with the furnace. Then, open the furnace door 111 to remove the finished alumina ceramic product.

[0047] The working principle of the alumina ceramic sintering equipment in this application is as follows: A silicon molybdenum rod 61 is energized to heat the alumina ceramic green body in stages. The organic binder of the green body decomposes, generating exhaust gas containing dust and tar. The furnace body 11 heats up, forming a continuously fluctuating pulsed flue gas pressure. The exhaust gas flows into the exhaust pipe 3 through the exhaust port 112, and the pulsed pressure is synchronously transmitted within the exhaust pipe 3. The pulsed pressure within the exhaust pipe 3 is sent to the driving cavity 412 of the pulse vibration component 4 through the pressure tapping hole 31 and the branch pressure tapping pipe 5. The diaphragm 411 deforms repeatedly with pressure fluctuations, continuously pushing the push rod 421 to intermittently output linear thrust; the push rod 421 successively pushes the ratchet 4231 to rotate unidirectionally and twists the spiral spring 4236 to accumulate elastic potential energy, while the check pawl 4235 continuously locks the ratchet 4231 to prevent reverse energy release; after the ratchet 4231 rotates to a set angle, it triggers the release structure 425, driving the check pawl 4235 to disengage from the ratchet 4231 to complete unlocking, and the spiral spring 4236 instantly releases potential energy to drive the main... When shaft 422 rotates, the pendulum 4241 at the end of the main shaft 422 strikes the outer wall of the elbow, shaking off the accumulated ash and tar on the inner wall of the elbow through vibration; after ratchet 4231 reverses and resets, release structure 425 returns to its original position, and check pawl 4235 relocks ratchet 4231, and the mechanism enters the next energy storage cycle; when the main shaft 422 rotates at high speed, it synchronously drives drive cam 75 to rotate, drive cam 75 pushes guide rod 72 to make annular scraper 71 slide on the inner wall of exhaust pipe 3, scraping off the tar deposits on the wall of exhaust pipe 3. The cam 75 rotates past the contact position, and the return spring 73 pulls the annular scraper 71 back. The scraped-off dirt settles to the bottom of the exhaust pipe 3 by gravity and is periodically discharged from the slag removal port 32. After the exhaust gas is cleaned by water washing, the exhaust gas is introduced into the water body at the bottom of the water bath 21. During the process of the exhaust gas floating, the dust and tar are fully adsorbed and intercepted by the water body. The clean gas is discharged from the top of the water bath 21. The water exchange port 211 at the bottom of the water bath 21 can be used to periodically replace the sewage and stably maintain the washing and purification effect.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A sintering device for alumina ceramics, characterized in that: The device includes a sintering furnace apparatus (1) and a waste gas separation device (2); the sintering furnace apparatus (1) includes a furnace body (11), a furnace door (111) is provided on the furnace body (11), a flue gas outlet (112) is provided on the top of one side of the furnace body (11), one end of the flue gas outlet (112) is connected to the interior of the furnace body (11), and the other end of the flue gas outlet (112) is provided with an exhaust pipe (3); a pressure tapping hole (31) is provided on the side wall of the horizontal section of the exhaust pipe (3); a pulse vibration assembly (4) is provided on the outer side of the bend section of the exhaust pipe (3). The pressure tapping hole (31) is provided with a branch pressure tapping pipe (5), and the pressure tapping hole (31) is connected to the pulse vibration component (4) through the branch pressure tapping pipe (5); one end of the exhaust pipe (3) is connected to the flue gas outlet (112), and the other end of the exhaust pipe (3) is connected to the waste gas separation device (2); a slag cleaning port (32) is provided at the bottom of the vertical section of the exhaust pipe (3); a heating element (6) is provided inside the furnace body (11); and a flue gas waste heat exchanger for energy recovery and utilization is connected to the exhaust pipe (3).

2. The sintering equipment for alumina ceramics according to claim 1, characterized in that: The pulse vibration assembly (4) includes a mounting housing (41) and an energy storage mechanism (42). A thin film (411) is provided inside the mounting housing (41), which divides the mounting housing (41) into a driving chamber (412) and an output chamber (413). One end of the branch pressure pipe (5) is connected to the pressure tapping hole (31), and the other end of the branch pressure pipe (5) is connected to the driving chamber (412) of the mounting housing (41). A communication port is provided on the output chamber (413), and the output chamber (413) is connected to the outside of the mounting housing (41) through the communication port. The energy storage mechanism (42) is disposed inside the output chamber (413).

3. The sintering equipment for alumina ceramics according to claim 2, characterized in that: The energy storage mechanism (42) includes a push rod (421), a main shaft (422), an energy storage unit (423), and a striking unit (424); the push rod (421) is slidably disposed in the output cavity (413), and one end of the push rod (421) is fixedly disposed in the middle of the diaphragm (411); the main shaft (422) is rotatably disposed on the drive cavity (412) of the mounting housing (41), and the energy storage unit (423) is fixedly disposed at one end of the main shaft (422); the other end of the main shaft (422) extends outside the mounting housing (41), and the striking unit (424) is disposed at the other end of the main shaft (422); the other end of the push rod (421) abuts against the energy storage unit (423).

4. The sintering equipment for alumina ceramics according to claim 3, characterized in that: The energy storage unit (423) includes a ratchet (4231), a drive pawl (4232), a drive lever (4233), a paddle spring (4234), a check pawl (4235), and a spiral spring (4236). The ratchet (4231) is fixedly mounted on one end of the main shaft (422). One end of the drive lever (4233) is rotatably mounted on the main shaft (422), and one end of the drive pawl (4232) is rotatably mounted on the other end of the main shaft (422) lever. The other end of the drive pawl (4232) abuts against the teeth of the ratchet (4231). A limit block (4237) is provided at the other end of the main shaft (422) lever, and the limit block (4237) is used to limit the rotation angle of the drive pawl (4232). One end of the spring (4234) is rotatably connected to the active rocker arm (4233), and the other end of the actuating spring (4234) is rotatably connected to the wall of the drive cavity (412); the spiral spring (4236) is sleeved on the other end of the main shaft (422), one end of the spiral spring (4236) is fixedly connected to the main shaft (422), and the other end of the spiral spring (4236) is fixedly connected to the outside of the mounting housing (41); a release structure (425) is provided on the side wall of the drive cavity (412), one end of the anti-return pawl (4235) is provided on the release structure (425), and the other end of the anti-return pawl (4235) abuts against the teeth of the ratchet (4231); a lever (4238) is provided on the side of the ratchet (4231).

5. The sintering equipment for alumina ceramics according to claim 4, characterized in that: The striking unit (424) includes a pendulum (4241) and an anvil (4242); one end of the pendulum (4241) is fixedly disposed at the other end of the main shaft (422); the anvil (4242) is fixedly disposed on the outside of the bend section of the exhaust pipe (3), and the other end of the pendulum (4241) abuts against the anvil (4242).

6. The sintering equipment for alumina ceramics according to claim 4, characterized in that: The release structure (425) includes a release rod (4251), a drive rod (4252), a piston rod (4253), and a drive cylinder (4254); the drive cylinder (4254) is fixedly mounted on the side wall of the drive chamber (412); one end of the piston rod (4253) is slidably mounted inside one end of the drive cylinder (4254); one end of the release rod (4251) is fixedly mounted on the other end of the piston rod (4253); the other end of the release rod (4251) is used to abut against the lever (4238) on the side of the ratchet (4231); the drive rod One end of the drive rod (4252) is slidably disposed inside the other end of the drive cylinder (4254); one end of the drive rod (4252) is provided with a connecting platform (4255), and a mounting shaft (4256) is fixedly disposed on the connecting platform (4255); one end of the check pawl (4235) is rotatably disposed on the mounting shaft (4256); a torsion spring (4257) is sleeved on the mounting shaft (4256); one end of the torsion spring (4257) is fixedly connected to the mounting shaft (4256); and the other end of the torsion spring (4257) is fixedly connected to the check pawl (4235).

7. The sintering equipment for alumina ceramics according to claim 3, characterized in that: A cleaning assembly (7) is provided in the vertical section of the exhaust pipe (3). The cleaning assembly (7) includes an annular scraper (71), a guide rod (72), a return spring (73), a mounting bracket (74), and a drive cam (75). The drive cam (75) is fixedly mounted on the other end of the main shaft (422). The annular scraper (71) is slidably mounted in the exhaust pipe (3). A drive groove (76) is provided on the side of the vertical section of the exhaust pipe (3). A sealing corrugated sleeve (77) is provided on the drive groove (76). The mounting bracket (74) is fixedly installed on the outer wall of the exhaust pipe. The guide rod (72) is slidably installed on the mounting bracket (74). The return spring (73) is sleeved on the guide rod (72). One end of the return spring (73) is fixedly installed on the guide rod (72), and the other end of the return spring (73) is fixedly installed on the mounting bracket (74). One end of the guide rod (72) passes through the sealing corrugated sleeve (77) and is fixedly connected to the annular scraper (71). The other end of the guide rod (72) abuts against the drive cam (75).

8. The sintering equipment for alumina ceramics according to claim 1, characterized in that: The exhaust gas separation device (2) includes a water bath (21), an air inlet pipe (22), and an exhaust pipe (23); one end of the air inlet pipe (22) is connected to the other end of the exhaust pipe (3); the other end of the air inlet pipe (22) is located inside the water bath (21), and the other end of the air inlet pipe (22) extends downward to the bottom of the water bath (21); the exhaust pipe (23) is located at the top of the water bath (21), and the exhaust pipe (23) is connected to the inside of the water bath (21); a water exchange port (211) is provided on the lower part of one side of the water bath (21).

9. The sintering equipment for alumina ceramics according to claim 1, characterized in that: The heating element (6) is a silicon molybdenum rod (61). The heating part of the silicon molybdenum rod (61) is disposed on the side wall inside the furnace body (11), and the cold end of the silicon molybdenum rod (61) passes through the side wall of the furnace body (11) and is connected to an external power source.

10. A sintering process for alumina ceramics, using the sintering equipment described in any one of claims 1-9, characterized in that, Includes the following steps: Step S1: Place the alumina ceramic green body inside the furnace body (11) of the sintering furnace device (1) and close the furnace door (111); Step S2: The furnace body (11) is heated by the heating element (6) inside the furnace body (11) to raise the temperature inside the furnace body (11) from room temperature to the first temperature, so that the organic binder in the alumina ceramic green body is decomposed and discharged. The generated exhaust gas is discharged to the exhaust pipe (3) through the exhaust port (112) on the top side of the furnace body (11), and then discharged to the exhaust gas separation device (2) through the exhaust pipe (3). Step S3: Continue heating to the second temperature for sintering to densify the alumina ceramic green body; Step S4: After sintering is completed, the heating element (6) stops heating and cools down to room temperature with the furnace. Then, open the furnace door (111) and take out the finished alumina ceramic product.

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