Airflow stirring device with high-temperature sealing effect and use method thereof

Abstract

The invention discloses an airflow stirring device with a high-temperature sealing effect and a using method thereof. The airflow stirring device comprises a stirring container, a gas distributor arranged at the bottom of the stirring container, a driving stirring mechanism arranged on the stirring container and the gas distributor, and a multi-stage sealing assembly arranged on the gas distributor and the driving stirring assembly. The stirrer is matched with the gas distributor for use, the dispersion capacity is high, the circulation capacity is good, the problems of high-temperature caking and poor suspension effect of mixed materials are solved, the multi-stage sealing assembly is adopted, the sealing performance is enhanced, and the danger of explosion caused by sealing failure and gas leakage at the high temperature is prevented; the sealing reliability of the stirring device under severe working conditions such as high temperature is greatly improved, the possibility of explosion caused by gas leakage is reduced, the multi-stage cooling assembly is adopted, the temperature of a sealing part is reduced, downward heat transfer is reduced, and it is guaranteed that the device operates stably at the high temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of airflow stirring devices, and in particular relates to an airflow stirring device with a high-temperature sealing function and a use method thereof. Background Art

[0002] Air flow mixing uses gas to generate vortexes in the mixture, thereby achieving mixing, dispersion and homogenization of materials. Air flow mixing technology has broad application prospects and has been widely used in chemical, food, pharmaceutical, cosmetics and other industries. In these industries, air flow mixing technology can achieve the mixing, dispersion, drying and packaging of powder and granular materials. In addition, air flow mixing technology can also be applied to fields such as atmospheric treatment and wastewater treatment to effectively improve the treatment effect.

[0003] In the chemical industry, high-temperature sealing technology has increasingly higher requirements for the sealing performance of equipment in high-temperature environments. Chemical reactions often involve high-temperature conditions. If the seal fails, it may cause chemical leakage, which will not only cause waste of raw materials and deteriorate product quality, but may also cause safety accidents and environmental pollution. The media in chemical production are usually corrosive, toxic or flammable and explosive. Once leaked, the consequences are disastrous. Therefore, the development of high-temperature sealing technology has become one of the key factors to ensure safe, efficient and environmentally friendly operation of chemical production.

[0004] In chemical reactions, stirring operations are sometimes required under high temperature, high pressure or corrosive environments. Airflow stirring devices can better adapt to these harsh conditions because gases are usually not significantly affected by these harsh environments. Therefore, how to achieve high-temperature sealing and efficient stirring in chemical reactions is an urgent problem to be solved. To this end, we propose an airflow stirring device with high-temperature sealing function and a method for using the same. Summary of the invention

[0005] The object of the present invention is to provide an air flow stirring device with high temperature sealing function and a method of using the same, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: an air flow stirring device with high temperature sealing function, comprising: Mixing container; A gas distributor, wherein the gas distributor is arranged at the bottom of the stirring container; A driving stirring assembly, wherein the driving stirring mechanism is arranged on the stirring container and the gas distributor; A multi-stage sealing assembly, wherein the multi-stage sealing assembly is arranged on the gas distributor and the driving stirring assembly; A multi-stage cooling component is arranged on the driving stirring component.

[0007] Preferably, the gas distributor comprises a bottom plate and a gas distribution ring; The bottom plate is fixed to the bottom of the stirring container by bolts and nuts, the gas distribution ring is arranged on the bottom plate and extends to the inner bottom of the stirring container, the bottom of the bottom plate is provided with a first gas inlet, the inside of the bottom plate is provided with a gas guide cavity connected with the first gas inlet and the gas distribution ring, and the gas distribution ring is provided with gas injection holes distributed in a ring shape.

[0008] Preferably, the driving and stirring assembly comprises a driving motor, a stirring shaft and a stirrer; The driving motor is arranged below the bottom plate, the stirring shaft is connected to the output end of the driving motor, and the upper end of the stirring shaft passes through the gas distribution ring and extends to the inside of the stirring container, and the stirrer is arranged at the upper end of the stirring shaft; The lower part of the stirring shaft is provided with a shaft retaining seat via a bearing.

[0009] Preferably, the agitator is a sheet-shaped structure, and at least two rectangular frames are provided on the upper part of the agitator, so that at least two breaking beams are formed on the upper part of the agitator, and a slot connected to the agitator shaft is provided on the bottom of the agitator, and the bottom of the agitator is provided with reversely distributed stirring arc sheets on both sides of the slot.

[0010] Preferably, the multi-stage sealing assembly includes a labyrinth sealing assembly, a spring sealing assembly, a lip sealing assembly and a mechanical sealing assembly; The gas distributor and the stirring shaft are sealed and connected via the labyrinth seal assembly, the spring seal assembly and the lip seal assembly; The stirring shaft and the shaft retaining seat are sealed and connected via the lip seal assembly and the mechanical seal assembly.

[0011] Preferably, the labyrinth seal assembly comprises a labyrinth pressure plate, the labyrinth pressure plate is arranged on the stirring shaft, and the labyrinth pressure plate is arranged on the gas distribution ring, and the labyrinth pressure plate, the stirring shaft and the gas distribution ring are sealed and connected by the lip seal assembly; A labyrinth sealing channel is arranged inside the labyrinth pressure plate.

[0012] Preferably, the spring sealing assembly comprises a spring and a sealing top cover, and the spring and the sealing top cover are arranged between the connection between the gas distribution ring and the labyrinth pressure plate.

[0013] Preferably, the multi-stage cooling assembly includes a water cooling assembly, an air cooling assembly and an air cooling assembly; The water cooling component, the wind cooling component and the air cooling component are arranged on the stirring shaft corresponding to between the shaft retaining seat and the bottom plate.

[0014] Preferably, the water cooling assembly comprises a water cooling jacket and a spiral guide plate; The water cooling jacket is arranged on the stirring shaft between the corresponding shaft retaining seat and the bottom plate, the spiral guide plate is arranged in the water cooling jacket, the lower part of the water cooling jacket is provided with a cooling water inlet communicating with the interior of the water cooling jacket, and the upper part of the water cooling jacket is provided with a cooling water outlet communicating with the interior of the water cooling jacket; The air cooling assembly includes heat dissipation fins arranged at equal intervals on the outside of the water cooling jacket; The air cooling component comprises a second gas inlet arranged on the water cooling jacket, and one end of the second gas inlet passes through the water cooling jacket and extends between the water cooling jacket and the stirring shaft.

[0015] A method for using an airflow stirring device with a high-temperature sealing function comprises the following steps: A. Air flow stirring: The mixed material is placed in a stirring container, and a gas source is introduced into the first gas inlet. The gas source gas enters the gas injection hole on the gas distribution ring through the gas guide cavity in the bottom plate, and then is uniformly sprayed and dispersed around from the gas injection hole. After the gas source gas enters the stirring container, a high-speed airflow is formed. The high-speed airflow generates eddies between the mixed materials, and the mixed materials in the stirring container are stirred by airflow, so that the mixed materials are violently mixed, dispersed and sheared. B. Driving stirring: During the air flow stirring process, the driving motor drives the stirring shaft and the stirrer to rotate. During the rotation of the stirrer, the gas source gas ejected from the gas injection hole is dispersed and evenly dispersed in all directions in the stirring container. At the same time, the dispersing beam on the stirrer disperses the material agglomerates formed by high-temperature sintering. The stirring arc-shaped sheet at the bottom of the stirrer forms two circulating airflows, so that the mixed material in the stirring container is fully mixed and stirred with the gas source gas. C. Multi-stage cooling: During the operation of the airflow stirring device, since the airflow stirring device operates under high temperature conditions, it is necessary to ensure the normal operation of the driven stirring component. At this time, cooling water is introduced into the water cooling jacket through the cooling water inlet. Under the spiral guide action of the spiral guide plate, the cooling water is discharged from the cooling water outlet, quickly taking away the heat from the upper part of the stirring shaft, and naturally cooling the heat through the heat dissipation fins on the outside of the water cooling jacket. At the same time, cooling gas is introduced into the second gas inlet, and the cooling gas enters between the water cooling jacket and the stirring shaft to directly cool the stirring shaft and is discharged through the lip seal assembly on the upper part of the shaft retaining seat. The lip seal assembly adopts a one-way sealing characteristic, so that the cooling gas can only flow in one direction, and then the cooling gas is discharged outward through the lip seal assembly to take away the heat on the stirring shaft.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention sets a gas distributor in the stirring container, and the gas source gas enters the gas injection hole on the gas distribution ring through the gas guide cavity in the bottom plate, and then is uniformly sprayed and dispersed to the surroundings through the gas injection hole. After the gas source gas enters the stirring container, a high-speed airflow is formed, and the high-speed airflow generates vortices between the mixed materials, and the mixed materials in the stirring container are stirred by airflow, so that the mixed materials are violently mixed, dispersed and sheared. The gas pressure in the gas guide cavity becomes more uniform through the gas distribution ring, and the gas outlet speed of the gas injection hole becomes more stable, thereby solving the problem of uneven gas distribution in the stirring container; 2. The present invention adopts a stirrer in combination with a gas distributor. During the airflow stirring process, the driving motor drives the stirring shaft and the stirrer to rotate. During the rotation of the stirrer, the gas source gas ejected from the gas injection hole is dispersed and evenly dispersed in all directions in the stirring container. At the same time, the dispersing beam on the stirrer disperses the material agglomerates formed by high-temperature sintering. The stirring arc-shaped sheets at the bottom of the stirrer form two circulating airflows, so that the mixed material in the stirring container is fully mixed and stirred with the gas source gas, solving the problems of high-temperature agglomeration and poor suspension effect of the mixed material. The gas distributor is used in combination with the rotation of the stirrer, and the gas outlet direction is surrounded by 360 degrees, solving the problems of local dead zone, poor powder suspension effect and insufficient reaction. It has not only strong dispersing ability and good circulation ability, but also the combination of the two can better meet the high-strength requirements of powder dispersion and absorption operations; 3. In the present invention, the gas distributor and the stirring shaft are sealed and connected by a labyrinth seal assembly, a spring seal assembly and a lip seal assembly. The sealing performance of the stirring device is improved by the triple sealing effect of the labyrinth seal assembly, the spring seal assembly and the lip seal assembly. The stirring shaft and the shaft retaining seat are sealed and connected by a lip seal assembly and a mechanical seal assembly, which further improves the sealing performance and operation reliability of the device. The multi-stage sealing assembly enhances the sealing performance, prevents the risk of sealing failure and gas leakage causing explosion under high temperature, greatly improves the sealing reliability of the stirring device under harsh working conditions such as high temperature, and reduces the possibility of gas leakage causing explosion; 4. The present invention adopts a multi-stage cooling component, and utilizes the combined use of a water cooling component, an air cooling component and an air cooling component to reduce the temperature of the sealing part, reduce material deformation, aging and performance degradation caused by high temperature, and combine the water cooling component, the air cooling component and the air cooling component to further reduce the heat of the stirring system, and isolate the heat at the top from the bottom sealing system, reduce the heat from continuing to transfer downward, avoid the failure of the bottom mechanical seal at high temperature, and better extend the service life of the mechanical seal and the bearing; 5. The air cooling component of the present invention is used in conjunction with the lip seal component, which has a self-cleaning function for dust. The dust in the gap of the stirring shaft can be cleaned without stopping the stirring device, thereby preventing excessive dust accumulation from causing a large amount of friction on the stirring shaft, causing the stirring system to be stuck and not operate; gas is blown into the space between the water-cooling jacket and the stirring shaft through the second gas inlet, so that the pressure of the purge gas is greater than the pressure inside the stirring device, and the one-way sealing property of the lip seal component is used to allow the gas to flow in only one direction, thereby blowing the dust back into the interior of the stirring device instead of blowing it into the gap of the stirring shaft, thereby avoiding a large amount of friction on the stirring shaft caused by the dust. The system has the advantages of simple maintenance and repair, convenient operation, and long service life, and solves the problem of frequent shutdowns for repairs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional structural schematic diagram of the present invention; Figure 2 It is a schematic cross-sectional structural diagram of the gas distributor of the present invention; Figure 3 It is a schematic cross-sectional structural diagram of the gas distribution ring of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the agitator of the present invention; Figure 5 for Figure 1 Schematic diagram of the enlarged structure of A.

[0018] In the figure: 1, stirring container; 2, gas distributor; 201, bottom plate; 202, gas distribution ring; 203, first gas inlet; 204, gas flow chamber; 205, gas injection hole; 3, driving stirring assembly; 301, driving motor; 302, stirring shaft; 303, stirrer; 304, shaft retaining seat; 305, breaking beam; 306, notch; 307, stirring arc sheet; 4, multi-stage sealing assembly; 401, labyrinth sealing assembly; 4011, labyrinth pressure Plate; 4012, labyrinth sealing channel; 402, spring sealing assembly; 4021, spring; 4022, sealing top cover; 403, lip seal assembly; 404, mechanical seal assembly; 5, multi-stage cooling assembly; 501, water cooling assembly; 5011, water cooling jacket; 5012, spiral guide plate; 5013, cooling water inlet; 5014, cooling water outlet; 502, air cooling assembly; 5021, heat dissipation fins; 503, air cooling assembly; 5031, second gas inlet. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 5 The airflow stirring device with high temperature sealing function provided by the present invention comprises: Mixing container 1 ( Figure 1 not all shown); A gas distributor 2, which is arranged at the bottom of the stirring container 1, and includes a bottom plate 201 and a gas distribution ring 202; the bottom plate 201 is fixed to the bottom of the stirring container 1 by bolts and nuts, the gas distribution ring 202 is arranged on the bottom plate 201 and extends to the inner bottom of the stirring container 1, a first gas inlet 203 is arranged at the bottom of the bottom plate 201, a gas guide cavity 204 connected to the first gas inlet 203 and the gas distribution ring 202 is opened inside the bottom plate 201, and the gas distribution ring 202 is opened with gas injection holes 205 distributed in an annular shape; The present invention sets a gas distributor 2 in the stirring container 1, and the gas source gas enters the gas injection hole 205 on the gas distribution ring 202 through the gas guide cavity 204 in the bottom plate 201, and then is uniformly sprayed and dispersed to the surroundings by the gas injection hole 205. After the gas source gas enters the stirring container 1, a high-speed airflow is formed, and the high-speed airflow generates vortices between the mixed materials, and the mixed materials in the stirring container 1 are stirred by airflow, so that the mixed materials are violently mixed, dispersed and sheared. The gas pressure in the gas guide cavity 204 becomes more uniform through the gas distribution ring 202, and the gas outlet speed of the gas injection hole 205 becomes more stable, thereby solving the problem of uneven gas distribution in the stirring container 1. A driving stirring assembly 3, wherein the driving stirring mechanism 3 is arranged on the stirring container 1 and the gas distributor 2, and the driving stirring assembly 3 comprises a driving motor 301, a stirring shaft 302 and a stirrer 303; the driving motor 301 is arranged below the bottom plate 201, the stirring shaft 302 is connected to the output end of the driving motor 301, and the upper end of the stirring shaft 302 passes through the gas distribution ring 202 and extends to the inside of the stirring container 1, and the stirrer 303 is arranged at the upper end of the stirring shaft 302; a shaft retaining seat 304 is arranged at the lower part of the stirring shaft 302 through a bearing, the stirrer 303 is a sheet-shaped structure, and at least two rectangular frames are provided at the upper part of the stirrer 303, so that at least two breaking beams 305 are formed at the upper part of the stirrer 303, a notch 306 connected to the stirring shaft 302 is provided at the bottom of the stirrer 303, and reversely distributed stirring arc sheets 307 are arranged on both sides of the notch 306 at the bottom of the stirrer 303; In the present invention, the stirrer 303 is used in conjunction with the gas distributor 2. During the airflow stirring process, the driving motor 301 drives the stirring shaft 302 and the stirrer 303 to rotate. During the rotation process, the stirrer 303 breaks up the gas source gas ejected from the gas injection hole 205 and evenly disperses it in all directions in the stirring container 1. At the same time, the breaking beam 305 on the stirrer 303 breaks up the material agglomerates sintered at high temperature. The stirring arc-shaped sheet 307 at the bottom of the stirrer 303 forms two circulating airflows, so that the mixed material in the stirring container 1 is fully mixed and stirred with the gas source gas, solving the problems of high-temperature agglomeration and poor suspension effect of the mixed material. The gas distributor 2 is used in conjunction with the rotation of the stirrer 303, and the gas outlet direction is 360 degrees around, solving the problems of local dead zone, poor powder suspension effect and insufficient reaction. It not only has strong dispersion ability and good circulation ability, but the combination of the two can better meet the high-strength requirements of powder dispersion and absorption operations. A multi-stage sealing assembly 4 is provided on the gas distributor 2 and the driving stirring assembly 3. The multi-stage sealing assembly 4 comprises a labyrinth sealing assembly 401, a spring sealing assembly 402, a lip sealing assembly 403 and a mechanical sealing assembly 404. The gas distributor 2 and the stirring shaft 302 are sealed and connected via the labyrinth sealing assembly 401, the spring sealing assembly 402 and the lip sealing assembly 403. The stirring shaft 302 and the shaft retaining seat 304 are sealed and connected via the lip sealing assembly 403 and the mechanical sealing assembly 404. In a free state, the inner diameter of the lip seal assembly 403 is smaller than the shaft diameter, and has a certain interference ratio to generate a certain radial tightening force on the shaft, thereby preventing the mixed material in the mixing container 1 from flowing out to the outside, so that the gas can only flow in one direction, thus meeting the requirement of one-way air intake; The mechanical seal assembly 404 ensures that the mixed material does not leak during the operation of the stirring device and maintains the pressure and sealing of the stirring device; The labyrinth seal assembly 401 includes a labyrinth pressure plate 4011, which is arranged on the stirring shaft 302 and the gas distribution ring 202. The labyrinth pressure plate 4011, the stirring shaft 302 and the gas distribution ring 202 are sealed and connected via a lip seal assembly 403, and a labyrinth sealing channel 4012 is arranged inside the labyrinth pressure plate 4011. The present invention is provided with a labyrinth seal assembly 401. When the stirring shaft 302 rotates at high speed, the labyrinth seal channel 4012 is similar to a labyrinth structure, and a vortex effect is formed inside, thereby reducing the leakage of the mixed material. The spring seal assembly 402 includes a spring 4021 and a sealing top cover 4022, and the spring 4021 and the sealing top cover 4022 are arranged between the connection between the gas distribution ring 202 and the labyrinth pressure plate 4011; The present invention is provided with a spring sealing assembly 402, and a spring 4021 provides a continuous pressing force to form a seal between the sealing top cover 4022 and the labyrinth pressure plate 4011, thereby preventing leakage of the mixed material and further improving the sealing performance; In the present invention, the gas distributor 2 and the stirring shaft 302 are sealed and connected by a labyrinth seal assembly 401, a spring seal assembly 402 and a lip seal assembly 403. The sealing performance of the stirring device is improved by the triple sealing effect of the labyrinth seal assembly 401, the spring seal assembly 402 and the lip seal assembly 403. The stirring shaft 302 and the shaft retaining seat 304 are sealed and connected by the lip seal assembly 403 and the mechanical seal assembly 404, which further improves the sealing performance and operation reliability of the device. The multi-stage sealing assembly 4 enhances the sealing performance, prevents the danger of sealing failure and gas leakage causing explosion under high temperature, greatly improves the sealing reliability of the stirring device under harsh working conditions such as high temperature, and reduces the possibility of gas leakage causing explosion. The first seal uses a combination of a labyrinth seal assembly 401, a spring seal assembly 402 and a lip seal assembly 403 to prevent the mixed material from entering the gap of the stirring shaft due to the internal pressure, causing a large amount of friction on the stirring shaft, and eventually causing the stirring shaft to lock and the entire stirring device to stop running, thereby ensuring the normal operation of the entire device; The second seal mainly utilizes the combination of the lip seal assembly 403 and the mechanical seal assembly 404 to prevent the gas from flowing out, thereby preventing leakage and causing the risk of explosion, and again provides protection for the blocking of the mixed materials, thereby improving the reliability of the seal; A multi-stage cooling assembly 5, the multi-stage cooling assembly 5 is arranged on the driving stirring assembly 3, and the multi-stage cooling assembly 5 includes a water cooling assembly 501, an air cooling assembly 502 and an air cooling assembly 503; the water cooling assembly 501, the air cooling assembly 502 and the air cooling assembly 503 are arranged on the stirring shaft 302 between the corresponding shaft retaining seat 304 and the bottom plate 201; The water cooling assembly 501 includes a water cooling jacket 5011 and a spiral guide plate 5012. The water cooling jacket 5011 is arranged between the corresponding shaft retaining seat 304 and the bottom plate 201 on the stirring shaft 302. The spiral guide plate 5012 is arranged inside the water cooling jacket 5011. The lower part of the water cooling jacket 5011 is provided with a cooling water inlet 5013 connected to the inside of the water cooling jacket 5011. The upper part of the water cooling jacket 5011 is provided with a cooling water outlet 5014 connected to the inside of the water cooling jacket 5011. The water cooling component 501 utilizes cooling water circulation to take away the heat of the stirring shaft. The cooling water is introduced into the water cooling jacket 5011 through the cooling water inlet 5013. Under the spiral guide action of the spiral guide plate 5012, the cooling water is evenly distributed in the water cooling jacket 5011, reducing the eddy current phenomenon, preventing fluid short circuit, making the heat exchange effect more uniform, and improving the efficiency and quality of the reaction. Finally, the cooling water flows out from the cooling water outlet 5014, reducing the temperature of the stirring shaft, and isolating the high temperature at the top in the water cooling jacket 5011, preventing the temperature from being transmitted to the lip seal component 403 and the mechanical seal component 404 at the bottom, thereby extending the service life of the seal and maintaining its sealing performance; The air cooling assembly 502 includes heat dissipation fins 5021 arranged at equal intervals on the outside of the water cooling jacket 5011; The air cooling component 502 achieves the purpose of strengthening heat transfer and heat dissipation through the heat dissipation fins 5021. When the gas encounters the outward-swept heat dissipation fins 5021, a turbulent flow is generated on the lower side of the heat dissipation fins 5021. The gas after the turbulent flow flows along the heat dissipation fins 5021. When passing through the crest of the heat dissipation fins 5021, the gas has a large contact area with the heat dissipation fins 5021, thereby generating heat exchange, so that the heat transfer efficiency of the heat dissipation fins 5021 is high, which is several times that of ordinary radiators. The air cooling component 502 is mainly used to strengthen the heat dissipation effect of the water cooling component 501, take away more heat, and improve the heat dissipation performance; The air cooling assembly 503 includes a second gas inlet 5031 disposed on the water cooling jacket 5011, and one end of the second gas inlet 5031 passes through the water cooling jacket 5011 and extends between the water cooling jacket 5011 and the stirring shaft 302; The air cooling component 503 uses cooling gas (argon gas) to purge the stirring shaft 302, and uses the lip seal component 403 to allow the gas to flow in only one direction, thereby taking away the high-temperature gas between the stirring shaft 302 and the water-cooling jacket 5011, reducing the surface temperature of the stirring shaft 302, reducing the impact of high temperature on the stirring shaft 302, and then maintaining and improving the strength of the stirring shaft 302, extending the service life, and ensuring the normal use of the stirring device; The present invention adopts a multi-stage cooling component 5, and utilizes the combined use of a water cooling component 501, an air cooling component 502, and an air cooling component 503 to reduce the temperature of the sealing part, reduce material deformation, aging, and performance degradation caused by high temperature, and combines the water cooling component 501, the air cooling component 502, and the air cooling component 503 to further reduce the heat of the stirring system, and isolate the heat at the top from the bottom sealing system, reduce the heat from continuing to transfer downward, avoid the failure of the bottom mechanical seal at high temperature, and better extend the service life of the mechanical seal and the bearing; In addition, the air cooling component 503 of the present invention is used in conjunction with the lip seal component 403, which has a dust self-cleaning function, and can clean the dust in the gap of the stirring shaft without stopping the stirring device, thereby preventing excessive dust accumulation from causing a large amount of friction on the stirring shaft, causing the stirring system to get stuck and stop operating; Gas is blown into between the water-cooling jacket 5011 and the stirring shaft 302 through the second gas inlet 5031, so that the pressure of the purging gas is greater than the pressure inside the stirring device, and the one-way sealing property of the lip seal assembly 403 is utilized to allow the gas to flow in only one direction, thereby blowing the dust back into the stirring device instead of being blown into the gap of the stirring shaft, thereby preventing the dust from causing a large amount of friction on the stirring shaft. The device has the advantages of simple maintenance, easy operation, and long service life, and solves the problem of frequent shutdowns for maintenance.

[0021] The present invention uses an agitator 303 in conjunction with a gas distributor 2 to fully mix and stir the mixed material in the stirring container 1 with the gas source gas, thereby solving the problems of high-temperature agglomeration and poor suspension effect of the mixed material. The invention not only has strong dispersion ability and good circulation ability, but the combination of the two can better meet the high-strength requirements of powder dispersion and absorption operations. A multi-stage sealing component 4 is used to enhance the sealing performance, prevent the risk of seal failure and gas leakage causing explosion under high temperature, greatly improve the sealing reliability of the stirring device under harsh working conditions such as high temperature, and reduce the possibility of gas leakage causing explosion. A multi-stage cooling component 5 is used to reduce the temperature of the sealing part, reduce material deformation, aging and performance degradation caused by high temperature, reduce the heat transfer downward, avoid the bottom mechanical seal from failing at high temperature, and better extend the service life of the mechanical seal and the bearing.

[0022] The method for using the airflow stirring device with high-temperature sealing function provided by the present invention comprises the following steps: A. Air flow stirring: The mixed material is placed in the stirring container 1, and a gas source is introduced into the first gas inlet 203. The gas source gas passes through the gas guide cavity 204 in the bottom plate 201 and enters the gas injection hole 205 on the gas distribution ring 202, and then is uniformly sprayed and dispersed around from the gas injection hole 205. After the gas source gas enters the stirring container 1, a high-speed airflow is formed, and the high-speed airflow generates eddies between the mixed materials, and the mixed materials in the stirring container 1 are stirred by airflow, so that the mixed materials are violently mixed, dispersed and sheared; B. Driving stirring: During the air flow stirring process, the driving motor 301 drives the stirring shaft 302 and the stirrer 303 to rotate. During the rotation process, the stirrer 303 breaks up the gas source gas ejected from the gas injection hole 205 and evenly disperses it to all directions in the stirring container 1. At the same time, the breaking beam 305 on the stirrer 303 breaks up the material agglomerates sintered at high temperature. The stirring arc-shaped sheet 307 at the bottom of the stirrer 303 forms two circulating airflows, so that the mixed material in the stirring container 1 is fully mixed and stirred with the gas source gas. C. Multi-stage cooling: During the operation of the airflow stirring device, since the airflow stirring device operates under high temperature conditions, it is necessary to ensure the normal operation of the driving stirring component 3. At this time, cooling water is introduced into the water cooling jacket 5011 through the cooling water inlet 5013. The cooling water is discharged from the cooling water outlet 5014 under the spiral guide action of the spiral guide plate 5012, quickly taking away the heat from the upper part of the stirring shaft 302, and naturally cooling the heat through the heat dissipation fins 5021 on the outside of the water cooling jacket 5011. At the same time, cooling gas is introduced into the second gas inlet 5031, and the cooling gas enters between the water cooling jacket 5011 and the stirring shaft 302, directly cooling the stirring shaft 302, and is discharged through the lip seal assembly 403 on the upper part of the shaft retaining seat 304. The lip seal assembly 403 adopts a one-way sealing characteristic, so that the cooling gas can only flow in one direction, and then the cooling gas is discharged outward through the lip seal assembly 403 to take away the heat on the stirring shaft 302.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An air flow stirring device with high temperature sealing function, characterized in that: include, A stirring vessel (1); A gas distributor (2), wherein the gas distributor (2) is arranged at the bottom of the stirring container (1); A driving stirring assembly (3), wherein the driving stirring mechanism (3) is arranged on the stirring container (1) and the gas distributor (2); A multi-stage sealing assembly (4), wherein the multi-stage sealing assembly (4) is arranged on the gas distributor (2) and the driving stirring assembly (3); A multi-stage cooling component (5), wherein the multi-stage cooling component (5) is arranged on the driving stirring component (3).

2. The airflow stirring device with high temperature sealing function according to claim 1, characterized in that: The gas distributor (2) comprises a bottom plate (201) and a gas distribution ring (202); The bottom plate (201) is fixedly arranged at the bottom of the stirring container (1) by means of bolts and nuts; a gas distribution ring (202) is arranged on the bottom plate (201) and extends toward the inner bottom of the stirring container (1); a first gas inlet (203) is arranged at the bottom of the bottom plate (201); a gas guide cavity (204) communicating with the first gas inlet (203) and the gas distribution ring (202) is provided inside the bottom plate (201); and gas injection holes (205) distributed in an annular shape are provided on the gas distribution ring (202).

3. The airflow stirring device with high temperature sealing function according to claim 2, characterized in that: The driving stirring assembly (3) comprises a driving motor (301), a stirring shaft (302) and a stirrer (303); The driving motor (301) is arranged below the bottom plate (201), the stirring shaft (302) is connected to the output end of the driving motor (301), and the upper end of the stirring shaft (302) passes through the gas distribution ring (202) and extends into the interior of the stirring container (1), and the stirrer (303) is arranged at the upper end of the stirring shaft (302); A shaft retaining seat (304) is provided at the lower part of the stirring shaft (302) via a bearing.

4. The airflow stirring device with high temperature sealing function according to claim 3, characterized in that: The stirrer (303) is a sheet-shaped structure, and at least two rectangular frames are provided on the upper part of the stirrer (303), so that at least two breaking beams (305) are formed on the upper part of the stirrer (303); a notch (306) connected to the stirring shaft (302) is provided on the bottom of the stirrer (303); and stirring arc-shaped sheets (307) distributed in opposite directions are provided on both sides of the notch (306) at the bottom of the stirrer (303).

5. The airflow stirring device with high temperature sealing function according to claim 4, characterized in that: The multi-stage sealing assembly (4) comprises a labyrinth sealing assembly (401), a spring sealing assembly (402), a lip sealing assembly (403) and a mechanical sealing assembly (404); The gas distributor (2) and the stirring shaft (302) are sealed and connected via the labyrinth seal assembly (401), the spring seal assembly (402) and the lip seal assembly (403); The stirring shaft (302) and the shaft retaining seat (304) are sealed and connected via the lip seal assembly (403) and the mechanical seal assembly (404).

6. The airflow stirring device with high temperature sealing function according to claim 5, characterized in that: The labyrinth seal assembly (401) comprises a labyrinth pressure plate (4011), the labyrinth pressure plate (4011) being arranged on the stirring shaft (302), and the labyrinth pressure plate (4011) being arranged on the gas distribution ring (202), and the labyrinth pressure plate (4011), the stirring shaft (302) and the gas distribution ring (202) are sealed and connected via the lip seal assembly (403); A labyrinth sealing channel (4012) is provided inside the labyrinth pressure plate (4011).

7. The airflow stirring device with high temperature sealing function according to claim 6, characterized in that: The spring seal assembly (402) comprises a spring (4021) and a sealing top cover (4022), wherein the spring (4021) and the sealing top cover (4022) are arranged between the connection between the gas distribution ring (202) and the labyrinth pressure plate (4011).

8. The airflow stirring device with high temperature sealing function according to claim 3, characterized in that: The multi-stage cooling component (5) comprises a water cooling component (501), an air cooling component (502) and an air cooling component (503); The water cooling component (501), the air cooling component (502) and the gas cooling component (503) are arranged on the stirring shaft (302) corresponding to the shaft retaining seat (304) and the bottom plate (201).

9. The airflow stirring device with high temperature sealing function according to claim 8, characterized in that: The water cooling component (501) comprises a water cooling jacket (5011) and a spiral guide plate (5012); The water cooling jacket (5011) is arranged on the stirring shaft (302) between the shaft retaining seat (304) and the bottom plate (201); the spiral guide plate (5012) is arranged inside the water cooling jacket (5011); the lower part of the water cooling jacket (5011) is provided with a cooling water inlet (5013) connected to the inside of the water cooling jacket (5011); and the upper part of the water cooling jacket (5011) is provided with a cooling water outlet (5014) connected to the inside of the water cooling jacket (5011); The air cooling component (502) comprises heat dissipation fins (5021) arranged at equal intervals on the outside of the water cooling jacket (5011); The air cooling component (503) comprises a second gas inlet (5031) arranged on the water cooling jacket (5011), and one end of the second gas inlet (5031) passes through the water cooling jacket (5011) and extends between the water cooling jacket (5011) and the stirring shaft (302).

10. A method for using an airflow stirring device with high temperature sealing function according to any one of claims 1 to 9, characterized in that: The steps include: A. Air flow stirring: The mixed material is placed in a stirring container (1), a gas source is introduced into a first gas inlet (203), the gas source gas passes through a gas guide cavity (204) in a bottom plate (201) and enters a gas injection hole (205) on a gas distribution ring (202), and then is uniformly sprayed and dispersed in all directions from the gas injection hole (205), and a high-speed airflow is formed after the gas source gas enters the stirring container (1), and the high-speed airflow generates eddies between the mixed materials, and the mixed materials in the stirring container (1) are stirred by the airflow, so that the mixed materials are subjected to intense mixing, dispersion and shearing effects; B. Driving stirring: During the air flow stirring process, the driving motor (301) drives the stirring shaft (302) and the stirrer (303) to rotate. During the rotation process, the stirrer (303) breaks up the source gas ejected from the gas injection hole (205) and evenly disperses it in all directions in the stirring container (1). At the same time, the breaking beam (305) on the stirrer (303) breaks up the material agglomerates formed by high-temperature sintering. The stirring arc-shaped sheet (307) at the bottom of the stirrer (303) forms two circulating air flows, so that the mixed material in the stirring container (1) is fully mixed and stirred with the source gas. C. Multi-stage cooling: During the operation of the air flow stirring device, since the air flow stirring device is operated under high temperature conditions, it is necessary to ensure the normal operation of the driving stirring component (3). At this time, cooling water is introduced into the water cooling jacket (5011) through the cooling water inlet (5013). The cooling water is discharged from the cooling water outlet (5014) under the spiral guide action of the spiral guide plate (5012), quickly taking away the heat from the upper part of the stirring shaft (302), and is naturally cooled through the heat dissipation fins (5021) on the outside of the water cooling jacket (5011). The cooling gas is air-cooled and introduced into the second gas inlet (5031). The cooling gas enters between the water-cooling jacket (5011) and the stirring shaft (302), directly cools the stirring shaft (302), and is discharged through the lip seal assembly (403) on the upper part of the shaft retaining seat (304). The lip seal assembly (403) adopts a one-way sealing characteristic so that the cooling gas can only flow in one direction, thereby allowing the cooling gas to be discharged outward through the lip seal assembly (403) to take away the heat on the stirring shaft (302).

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