CN112325659A - Air control device for silicon nitride ceramic sintering furnace - Google Patents
Air control device for silicon nitride ceramic sintering furnace Download PDFInfo
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- CN112325659A CN112325659A CN202011335121.3A CN202011335121A CN112325659A CN 112325659 A CN112325659 A CN 112325659A CN 202011335121 A CN202011335121 A CN 202011335121A CN 112325659 A CN112325659 A CN 112325659A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
- F27D7/02—Supplying steam, vapour, gases, or liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2001/00—Composition, conformation or state of the charge
- F27M2001/03—Charges containing minerals
- F27M2001/035—China
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
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Abstract
The invention relates to an air control device for a silicon nitride ceramic sintering furnace, which comprises an adjusting table, wherein the adjusting table is provided with a plurality of air dispersing parts and a plurality of air shielding parts; wherein a plurality of the air dispersing parts are suitable for vertically dispersing the high-pressure airflow; the plurality of wind screen parts are arranged around the plurality of wind dispersing parts; the wind screen part is suitable for vertically ejecting high-pressure airflow to form a wind wall, and the wind walls are mutually jointed to form a wind cover. When the silicon nitride ceramic is sintered, the adjusting plate is adjusted according to the difference of the temperature of the injected high-pressure gas, so that the position of the flow guide cavity is changed, and wind screens with different sizes are generated; if the high-pressure gas which does not reach the heating temperature is retained, the influence of the high-temperature gas on high-temperature aggregation is prevented, for example, the high-temperature aggregation part of the high-pressure gas reaching the heating temperature is guided, the formation of the high-temperature aggregation is promoted, and the favorable influence is generated on the hardness, the strength and the like of subsequent products.
Description
Technical Field
The invention relates to an air control device, in particular to an air control device for a silicon nitride ceramic sintering furnace.
Background
Chinese patent application No.: CN201710621716.7 discloses an automatic air control device for a multi-media fuel general hot blast stove, which comprises a base, wherein an air blowing device is slidably connected to the base, and the air blowing device comprises an air blowing cylinder, a heat insulation device arranged on the air blowing cylinder, a position adjusting device arranged in the air blowing cylinder, an air blowing mechanism connected with the position adjusting device, and an induction device arranged on the heat insulation device; the base is also connected with a control device capable of automatically shielding the air vent of the hot blast stove in a sliding way, and the sensor capable of detecting the size of the flame is adopted to move the position of the impeller according to the flame, so that the base has flexibility; the two impellers are used, so that the wind power is larger, and the requirement can be met; the thermal insulation layer is used for preventing parts from being damaged due to overheating, so that the safety of the parts is guaranteed; the round baffle is used, when the hot blast stove stops working, the contact between air and fuel is automatically isolated, manual operation is not needed, the working efficiency is improved, and the production cost is reduced.
The above scheme has the following disadvantages: 1) the uniformity of the heated temperature cannot be ensured; 2) the heating temperature is not continuous and uniform, so that the hardness, strength and the like of subsequent products can be adversely affected; 3) the high-pressure gas directly added through the air blowing cylinder is easy to influence a heating receptor.
Disclosure of Invention
The invention aims to provide an air control device for a silicon nitride ceramic sintering furnace.
In order to solve the technical problem, the invention provides an air control device for a silicon nitride ceramic sintering furnace, which comprises an adjusting table and is characterized in that a plurality of air dispersing parts and a plurality of air shielding parts are arranged on the adjusting table; wherein a plurality of the air dispersing parts are suitable for vertically dispersing the high-pressure airflow; the plurality of wind screen parts are arranged around the plurality of wind dispersing parts; the wind screen part is suitable for vertically ejecting high-pressure airflow to form a wind wall, and the wind walls are mutually jointed to form a wind cover.
Preferably, the air dispersing part comprises a steering cavity arranged on the adjusting table, and a steering pipe is arranged in the steering cavity in an adaptive clamping manner; the impeller is rotatably arranged at the steering air outlet of the steering pipe, a flow dividing head is integrally arranged at the bottom of the impeller, and the flow dividing head is conical along the flowing direction of air.
Preferably, the air screen part comprises a plugging cavity arranged on the adjusting platform, a plugging inlet of the plugging cavity is communicated with the steering vertical channel of the steering cavity, and a plugging outlet of the plugging cavity is positioned at the top of the adjusting platform; and the side part of the steering pipe is provided with a side air outlet which is communicated with the plugging cavity inlet.
Preferably, the root of the flow dividing head is positioned at one side of the side air outlet.
Preferably, the air control device for the silicon nitride ceramic sintering furnace further comprises a plurality of adjusting plates arranged on the adjusting table, a plurality of flow guide cavities are formed in each adjusting plate, and each flow guide cavity is matched with a vertical blocking channel of one blocking cavity; and the vertical plugging channel comprises a ladder-shaped cavity and a vertical cavity which are communicated with each other, the larger bottom surface of the ladder-shaped cavity is communicated with the flow guide cavity, and the smaller bottom surface of the ladder-shaped cavity is communicated with the vertical cavity.
Preferably, the ratio of the outlet width of the larger bottom surface of the trapezoidal cavity to the outlet width of the flow guide cavity ranges from 1 to 2; the adjusting plate is suitable for being horizontally adjusted along the Y axis to adjust the size of the formed fan cover.
Preferably, four Jiong-shaped grooves are formed on the adjusting table; the bottom of the adjusting plate is integrally provided with an inserting plate which is suitable for being inserted into one groove edge of the Jiong-shaped groove.
Preferably, the adjusting plate comprises a side positioning plate and a side sliding plate, the side sliding plate is provided with the diversion cavity, and
a sliding blind groove is formed in one side of the side positioning plate, a guide plate is integrally arranged on the side sliding plate, and the guide plate is slidably inserted into the sliding blind groove.
Preferably, the guide plate is provided with a positioning groove, the side sliding plate is matched with a plurality of positioning holes, a positioning column penetrates through the positioning groove and the positioning holes, and the positioning column is suitable for fixing the side sliding plate on the positioning plate.
The invention has the advantages that when the silicon nitride ceramic is sintered, the size of the wind screen generated by the flow guide cavity is further changed according to the position of the adjusting plate, so that high-pressure gas with different temperatures is injected, and the technical effects of different requirements are realized; if the high-pressure gas which does not reach the heating temperature is retained, the influence of the high-temperature gas on high-temperature aggregation is prevented, for example, the high-temperature aggregation part of the high-pressure gas reaching the heating temperature is guided, the formation of the high-temperature aggregation is promoted, and the favorable influence is generated on the hardness, the strength and the like of subsequent products.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of a preferred embodiment of the air control device for a silicon nitride ceramic sintering furnace according to the present invention;
FIG. 2 is a perspective view of the construction of the outlet vent of the steerer tube of the present invention;
fig. 3 is a perspective view of the impeller structure of the present invention.
FIG. 4 is a cross-sectional view and a wind direction flow diagram of the turn chamber structure of the present invention;
FIG. 5 is a cross-sectional view and a wind direction flow diagram of another operating state of the turn chamber structure of the present invention;
FIG. 6 is a cross-sectional view and a wind direction flow diagram of the occluding cavity structure of the present invention;
FIG. 7 is a cross-sectional view and a wind direction flow diagram of the adjustment plate structure of the present invention;
FIG. 8 is a cross-sectional view and a wind direction flow diagram of another operating state of the adjusting plate structure of the present invention.
In the figure:
the air dispersing part 3, the air screen part 4,
the adjusting table 51, the turning chamber 511, the turning vertical passage 5111,
a plugging cavity 512, a vertical plugging channel 5121, a transverse plugging channel 5122, an inclined platform 5123,
the steering tube 52, the impeller 521, the flow dividing head 522, the side air outlet 523,
the flow guide cavity 53, the trapezoidal cavity 531, the vertical cavity 532,
the combination of the adjustment plate 54, the insert plate 541, the recess 542,
positioning hole 59, positioning column 60 and positioning groove 61.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
In the prior art, when the air control device is matched with the sintering device, the air control device directly leads a gas medium into the sintering device, so that the gas medium is directly sprayed to the position of a heating processing position to cause the gathered hot air flow to be scattered, and the sintered material has uneven quality level.
As shown in fig. 1-3 and fig. 6, the present invention provides a wind control device for silicon nitride ceramic sintering, the wind control device comprises an adjusting table 51, the adjusting table 51 is in a cubic structure, the adjusting table 51 is used as a main body of the wind control device, and plays a role of bearing an internal structure and supporting a pipeline connected with the wind control device; the adjusting table 51 is internally provided with four air dispersing parts 3, the air dispersing parts 3 are suitable for vertically dispersing high-pressure air flow, high-pressure air flowing in a single direction in a gas medium transmission pipeline is changed into multi-directional spraying, the impact force of the high-pressure air flowing in the single direction is effectively reduced, and therefore the influence of the high-pressure air on the crucible is reduced in the sintering process; the important parts of the diffuser 3 are the turning chamber 511 and the impeller 521.
The side of the adjusting table 51 is provided with four turning cavities 511, the four side surfaces of the adjusting table 51 are provided with one turning cavity 511, the turning cavities 511 are all in an L shape, each turning cavity 511 comprises a turning vertical channel 5111 and a turning horizontal channel, and the turning vertical channel 5111 is connected and communicated with the turning horizontal channel; a steering pipe 52 is arranged in each steering cavity 511 in an adapting and clamping manner; the air outlet of the steering tube 52 is arranged at the top of the adjusting table 51, and the steering tube 52 is connected with an external pipeline structure to transmit the required high-pressure gas medium to the air outlet of the steering tube 52.
An impeller 521 is rotatably arranged at the air outlet of the steering tube 52, a bearing is arranged at the back of the impeller 521, a support column is fixedly connected to the outer ring of the bearing, the other end of the support column is fixedly arranged on the inner wall of the steering tube 52, and the support enables the impeller 521 to be fixedly arranged at the air outlet of the steering tube 52 and parallel to the air outlet; the outer ring and the inner ring of the bearing can realize relative rotation, the impeller 521 is further driven to rotate, the bottom of the impeller 521 is also provided with a flow dividing head 522, the flow dividing head 522 is conical, and the bottom area of the flow dividing head 522 is gradually increased from bottom to top; the conical flow dividing head 522 can enable high-pressure gas entering the steering pipe 52 to diffuse along the flow dividing head 522 to the circumferential direction of the flow dividing head 522, the high-pressure gas impacts the impeller 521, blades of the impeller 521 have certain streamline radian, and when the high-pressure gas impacts the blades, the impeller 521 is driven to rotate; the rotation of the impeller 521 further changes the flowing direction of the high-pressure gas, so that the effect of changing the high-pressure gas flowing in one direction in the gas medium transmission pipeline into multi-directional jetting is achieved, and the phenomenon that the crucible generates large impact force directly is avoided.
The wind control device also has the function of generating wind screens, four wind screen parts 4 are arranged on the adjusting table 51, the wind screen parts 4 are suitable for vertically ejecting high-pressure airflow to form wind walls, and the wind walls are mutually jointed to form a wind cover; the four wind screen parts 4 are arranged around the wind dispersing part 3, and the wind cover formed by the four wind screen parts 4 can reduce the impact force of high-pressure gas ejected by the wind dispersing part 3 or drive the high-pressure gas to flow to the crucible, so that the heating effect of the crucible is improved.
Each wind screen part 4 comprises a plugging cavity 512 arranged on the adjusting platform 51, a plugging inlet of the plugging cavity 512 is communicated with a steering vertical channel 5111 corresponding to the steering cavity 511, and a plugging outlet of the plugging cavity 512 is positioned at the top of the adjusting platform 51; a side air outlet 523 is formed in the side part of the steering pipe 52, and the side air outlet 523 is communicated with an inlet of the blocking cavity 512; as the high-pressure gas flows through the turning pipe 52, when the high-pressure gas impacts the flow dividing head 522, the root of the flow dividing head 522 is located at one side of the side air outlet 523, and is divided by the flow dividing head 522, and part of the high-pressure gas flows into the side air outlet 523, so that the high-pressure gas enters the blocking cavity 512 and forms a wind screen through the blocking cavity 512.
In order to further form a wind screen, the blocking cavity 512 comprises a blocking vertical channel 5121 and a blocking transverse channel 5122, the blocking vertical channel 5121 is connected and communicated with the blocking transverse channel 5122, a 45-degree inclined platform 5123 is arranged at the communication position, the incident angle of the 45-degree inclined platform 5123 is equal to the reflection angle, and the flowing direction of high-pressure gas is changed; the blocking vertical channel 5121 further comprises a vertical cavity 532 and a trapezoidal cavity 531, and the vertical cavity 532 is communicated with the smaller bottom surface of the trapezoidal cavity 531; high-pressure gas entering from the blocking inlet flows into the vertical cavity 532 through the blocking transverse channel 5122 of the small inlet, and the side wall of the vertical cavity 532 is vertically upward; the gas gradually gushes into the trapezoidal cavity 531 along the vertical side wall, the side wall of the trapezoidal cavity 531 inclines to form a certain included angle with the horizontal plane, and the gas is led to be diffused along the trapezoidal side wall; the extension of the edge of the wind screen is realized, and the area of the enclosed wind screen is increased.
However, the trapezoidal side wall enables the wind screen edge to be infinitely extended, but the wind screen edge is prevented from being generated, so that a plurality of adjusting plates 54 are arranged in the wind control device, the adjusting plates 54 are arranged on the adjusting table 51, each adjusting plate 54 is provided with a flow guide cavity 53, each flow guide cavity 53 is adapted with a blocking vertical channel 5121, and the flow guide cavity 53 is communicated with the larger bottom surface of the trapezoidal cavity 531 of the blocking vertical channel 5121; the side wall of the flow guide cavity 53 still adopts the vertical direction, the high-pressure gas diffused by the trapezoidal cavity 531 is limited again, the high-pressure gas is sprayed upwards along the vertical side wall, and the formed wind screen has the advantages that the area of the formed wind screen is larger, and the strength of the formed wind screen is slightly stronger than that of the gas of the wind dispersing part 3.
However, when the silicon nitride ceramic material is sintered, high-pressure gas with different temperatures is needed for assistance due to different sintering temperatures, so that the heating temperature is continuously and uniformly reached, a silicon nitride ceramic product with better hardness and strength is effectively formed, and the economic benefit is improved.
Therefore, the size of the cross area enclosed by the wind screen influences the effect of the wind screen on the crucible during sintering; in order to adjust the size of the wind screen, the adjusting plate 54 is further provided with a structure for adjusting the size of the wind screen, and the ratio of the outlet width of the larger bottom surface of the trapezoidal cavity 531 to the outlet width of the flow guide cavity 53 is 1-2; the outlet width of the larger bottom surface of the trapezoidal cavity 531 is larger than the flow guide cavity 53, so as to adjust the position of the wind screen and the size of the formed area, once the outlet width of the larger bottom surface of the trapezoidal cavity 531 is smaller than the flow guide cavity 53, the thickness of the formed wind screen is reduced, the effect of the wind screen is weakened, the adjusting plate 54 is suitable for outward horizontal adjustment to adjust the size of the formed wind cover, and the four adjusting plates 54 are simultaneously adjusted outward, so that the cross-sectional area surrounded by the wind screen can be increased, and the required effect is achieved.
In general, the crucible is arranged on a heating element, and the crucible is heated by the heating element, so that the material is sintered to form the silicon nitride ceramic product.
When the projection of the heating element in the vertical direction is positioned in the barrier, high-pressure gas reaching the heating temperature is introduced;
when the projection of the heating body in the vertical direction comprises the closed polygon, high-pressure gas which does not reach the heating temperature is introduced.
Wherein, the setting of accuse wind device has played following several effects:
1. the effect of supporting the pipeline assembly is achieved, and good support of the pipeline assembly is guaranteed;
2. according to different high-pressure gas temperatures, the position of the adjusting plate 54 corresponding to the adjusting table 51 is changed, so that the technical effects of different requirements are realized, such as retaining the high-pressure gas which does not reach the heating temperature, preventing the high-temperature gas from influencing the high-temperature aggregation at the crucible, and promoting the formation of the high-temperature aggregation by guiding the high-pressure gas reaching the heating temperature to the high-temperature aggregation position of the crucible;
3. the flow direction of the high-pressure airflow is guided, meanwhile, the impact pressure of the high-pressure airflow is reduced, and the impeller 521 is promoted to rotate by virtue of the impact pressure so as to promote the diffusion of the airflow;
4. when the high-pressure gas reaches the heating temperature, the high-temperature gas below the heating body is guided to the position of the crucible through the adjusting table 51, so that high-temperature concentration is promoted;
5. when the high-pressure gas reaches the heating temperature, the gas barrier directly impacts the circumferential direction of the crucible to limit the diffusion of the high-temperature gathered gas flow to a certain extent, and the sintering efficiency is greatly improved by adopting the structure.
6. When the high-pressure gas does not reach the heating temperature, the gas impacts the high-temperature gas below the heating body to promote the high-temperature gas to be mixed with the high-pressure gas, the high-temperature gas is promoted to be rapidly diffused, and the high-temperature gas is promoted to be mixed with the gas in the furnace to a certain degree.
Example one
As shown in fig. 4-5, in order to adjust the size of the wind screen, the adjusting plates 54 are further provided with a structure for adjusting the size of the wind screen, the bottoms of the four adjusting plates 54 are integrally provided with an inserting plate 541, and the adjusting table 51 is respectively and suitably provided with a "Jiong" -shaped groove 542, and the inserting plate 541 is suitable for being inserted into one groove edge of the "Jiong" -shaped groove 542; the Jiong-shaped groove 542 is used as a moving groove of the inserting plate 541, the inserting plate 541 moves in the groove 542, when the inserting plate 541 is inserted into one groove edge of the Jiong-shaped groove 542, the inserting plate 541 cannot move horizontally, if the inserting plate 541 moves, the adjusting plate 54 is lifted up to reach the other groove edge along the Jiong-shaped groove 542, and the adjusting plate 54 is put down.
In order to prevent the adjustment plate 54 from moving in the vertical direction due to the impact of the high-pressure gas, iron or a material having a large mass is used as the adjustment plate 54.
If the temperature of the introduced high-pressure gas does not reach the required heating temperature:
the high-pressure gas which does not reach the required heating temperature enters the steering pipe 52, the high-pressure gas which does not reach the required heating temperature impacts the impeller 521 at the air outlet of the steering pipe 52 through the L-shaped corner of the steering pipe 52, the flow dividing head 522 at the bottom of the impeller 521 guides the high-pressure gas which does not reach the required heating temperature to scatter and impact the impeller 521 and drives the impeller 521 to rotate, and the rotating impeller 521 further accelerates the scattering of the gas and sprays the high-pressure gas which does not reach the required heating temperature; part of the high-pressure gas which does not reach the required heating temperature is guided into the side air outlet 523 by the flow dividing head 522, the side air outlet 523 is communicated with the blocking cavity 512, and the high-pressure gas which does not reach the required heating temperature is ejected out of the flow guide cavity 53 along the blocking cavity 512 to form a wind screen.
Because the high-pressure gas which does not reach the required heating temperature is introduced, the adjusting plate 54 adopts the original state, and the insert plate 541 of the adjusting plate 54 is inserted in the groove edge which is close to the Jiong-shaped groove 542, namely the cross-sectional area of the space surrounded by the wind screen, and is in the projection area of the heating body. The air screen can retain the high-pressure gas which does not reach the heating temperature, so as to prevent the high-temperature gas from gathering at the crucible.
If the temperature of the introduced high-pressure gas reaches the required heating temperature:
the high-pressure gas reaching the required heating temperature enters the steering pipe 52, impacts the impeller 521 at the air outlet of the steering pipe 52 through the L-shaped corner of the steering pipe 52, the flow dividing head 522 at the bottom of the impeller 521 guides the high-pressure gas reaching the required heating temperature to scatter and impact the impeller 521 and drive the impeller 521 to rotate, and the rotating impeller 521 further accelerates the scattering of the gas and sprays the high-pressure gas reaching the required heating temperature; part of high-pressure gas reaching the required heating temperature is guided into the side air outlet 523 by the flow dividing head 522, the side air outlet 523 is communicated with the blocking cavity 512, and the high-pressure gas reaching the required heating temperature is ejected out of the flow guide cavity 53 along the blocking cavity 512 to form a wind screen.
Because the high-pressure gas reaching the required heating temperature is introduced, the adjusting plates 54 are adjusted, the four adjusting plates 54 are lifted, and the inserting plates 541 are respectively inserted into the far groove edges of the Jiong-shaped groove 542 on the adjusting table 51, namely the cross-sectional area of the space surrounded by the wind screens contains the projection area of the heating element. The air screen guides the high-pressure gas reaching the heating temperature to the high-temperature gathering part of the crucible to promote the formation of the high-temperature gathering.
Example two
As shown in fig. 7-8, in order to adjust the size of the wind screen, the adjusting plate 54 is further provided with a structure for adjusting the size of the wind screen, the adjusting plate 54 comprises a side positioning plate 55 and a side sliding plate 56, one side of the side positioning plate 55 is provided with a sliding blind groove 57, and the side sliding plate 56 is integrally provided with a guide plate 58; the guide plate 58 can be inserted in the sliding blind groove 57 in a sliding way; because the guide cavity is arranged on the side sliding plate 56, the size of the wind screen is changed according to the relative position of the side sliding plate 56 and the side positioning plate 55, the guide plate 58 of the side sliding plate 56 is inserted in the sliding blind groove 57 of the side positioning plate 55 in a sliding mode, the size of the wind screen is adjusted through horizontal movement, vertical movement cannot be conducted, and the problem of movement in the vertical direction is solved.
In order to fix the size of the wind screen, the relative position between the side sliding plate 56 and the guide plate 58 is not changed, namely, the relative position between the side sliding plate 56 and the guide plate 58 is fixed, a plurality of positioning holes 59 are formed in the guide plate 58, a positioning groove 61 is formed in the guide plate 58 of the side sliding plate 56, a positioning column 60 penetrates through the positioning groove 61 and the positioning hole 59, the positioning column 60 penetrates through the positioning holes 59 and the positioning groove 61, the relative position between the side positioning plate 55 and the side sliding plate 56 is fixed, horizontal fixation is achieved, and the fact that the cross section surrounded by the wind screen is connected continuously and stably.
If the temperature of the introduced high-pressure gas does not reach the required heating temperature:
the high-pressure gas which does not reach the required heating temperature enters the steering pipe 52, the high-pressure gas which does not reach the required heating temperature impacts the impeller 521 at the air outlet of the steering pipe 52 through the L-shaped corner of the steering pipe 52, the flow dividing head 522 at the bottom of the impeller 521 guides the high-pressure gas which does not reach the required heating temperature to scatter and impact the impeller 521 and drives the impeller 521 to rotate, and the rotating impeller 521 further accelerates the scattering of the gas and sprays the high-pressure gas which does not reach the required heating temperature; part of the high-pressure gas which does not reach the required heating temperature is guided into the side air outlet 523 by the flow dividing head 522, the side air outlet 523 is communicated with the blocking cavity 512, and the high-pressure gas which does not reach the required heating temperature is ejected out of the flow guide cavity 53 along the blocking cavity 512 to form a wind screen.
Because the high-pressure gas which does not reach the required heating temperature is introduced, the adjusting plate 54 adopts the original state, the guide plate 58 of the side sliding plate 56 is inserted into the sliding blind groove 57 of the side positioning plate 55, the positioning column 60 penetrates through the positioning hole 59 and the positioning groove 61 which are close to the steering cavity 511, the side sliding plate 56 and the side positioning plate 55 are horizontally fixed, and the stable wind screen is generated, namely the cross-sectional area of the space surrounded by the wind screen is in the projection area of the heating body. The air screen can retain the high-pressure gas which does not reach the heating temperature, so as to prevent the high-temperature gas from gathering at the crucible.
If the temperature of the introduced high-pressure gas reaches the required heating temperature:
the high-pressure gas reaching the required heating temperature enters the steering pipe 52, impacts the impeller 521 at the air outlet of the steering pipe 52 through the L-shaped corner of the steering pipe 52, the flow dividing head 522 at the bottom of the impeller 521 guides the high-pressure gas reaching the required heating temperature to scatter and impact the impeller 521 and drive the impeller 521 to rotate, and the rotating impeller 521 further accelerates the scattering of the gas and sprays the high-pressure gas reaching the required heating temperature; part of high-pressure gas reaching the required heating temperature is guided into the side air outlet 523 by the flow dividing head 522, the side air outlet 523 is communicated with the blocking cavity 512, and the high-pressure gas reaching the required heating temperature is ejected out of the flow guide cavity 53 along the blocking cavity 512 to form a wind screen.
Because the high-pressure gas reaching the required heating temperature is introduced, the adjusting plate 54 is adjusted to horizontally slide the side sliding plate 56 on the side positioning plate 55, and the side sliding plate 56 and the side positioning plate 55 are horizontally fixed by the positioning column 60 penetrating through the positioning hole 59 and the positioning groove 61 far away from the turning cavity 511, so as to generate a stable wind screen, i.e. the cross-sectional area of the space surrounded by the wind screen contains the projection area of the heating element. The wind screen guides the high-pressure gas reaching the heating temperature to the high-temperature gathering part of the crucible to promote the formation of the high-temperature gathering
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The air control device for the silicon nitride ceramic sintering furnace comprises an adjusting table, and is characterized in that a plurality of air dispersing parts and a plurality of air shielding parts are arranged on the adjusting table; wherein
The plurality of air dispersing parts are suitable for vertically dispersing high-pressure airflow;
the plurality of wind screen parts are arranged around the plurality of wind dispersing parts;
the wind screen part is suitable for vertically ejecting high-pressure airflow to form a wind wall, and the wind walls are mutually jointed to form a wind cover.
2. The air control device for the silicon nitride ceramic sintering furnace according to claim 1,
the air diffusing part comprises a steering cavity arranged on the adjusting table, and a steering pipe is arranged in the steering cavity in a matched and clamped mode; the steering pipe is characterized in that an impeller is rotatably arranged at a steering air outlet, a flow dividing head is integrally arranged at the bottom of the impeller, and
along the gas flow direction, the flow dividing head is conical.
3. The air control device for the silicon nitride ceramic sintering furnace according to claim 2,
the wind screen part comprises a plugging cavity arranged on the adjusting platform, a plugging inlet of the plugging cavity is communicated with the steering vertical channel of the steering cavity, and a plugging outlet of the plugging cavity is positioned at the top of the adjusting platform;
and the side part of the steering pipe is provided with a side air outlet which is communicated with the plugging cavity inlet.
4. The air control device for the silicon nitride ceramic sintering furnace according to claim 3,
the root of the flow dividing head is positioned at one side of the side air outlet.
5. The air control device for the silicon nitride ceramic sintering furnace according to claim 4,
the air control device for the silicon nitride ceramic sintering furnace further comprises a plurality of adjusting plates arranged on the adjusting table, a plurality of flow guide cavities are formed in the adjusting plates, and each flow guide cavity is matched with a vertical plugging channel of one plugging cavity; and
the vertical plugging channel comprises a ladder-shaped cavity and a vertical cavity which are communicated with each other, the larger bottom surface of the ladder-shaped cavity is communicated with the flow guide cavity, and the smaller bottom surface of the ladder-shaped cavity is communicated with the vertical cavity.
6. The air control device for the silicon nitride ceramic sintering furnace according to claim 5,
the ratio of the outlet width of the larger bottom surface of the trapezoidal cavity to the outlet width of the flow guide cavity ranges from 1 to 2;
the adjusting plate is suitable for being horizontally adjusted along the Y axis to adjust the size of the formed fan cover.
7. The air control device for the silicon nitride ceramic sintering furnace according to claim 6,
four Jiong-shaped grooves are formed on the adjusting table;
the bottom of the adjusting plate is integrally provided with an inserting plate which is suitable for being inserted into one groove edge of the Jiong-shaped groove.
8. The air control device for the silicon nitride ceramic sintering furnace according to claim 6,
the adjusting plate comprises a side positioning plate and a side sliding plate, the side sliding plate is provided with the flow guide cavity, and
a sliding blind groove is formed in one side of the side positioning plate, a guide plate is integrally arranged on the side sliding plate, and the guide plate is slidably inserted into the sliding blind groove.
9. The air control device for the silicon nitride ceramic sintering furnace according to claim 8,
a positioning groove is arranged on the guide plate, and
the side sliding plate is matched with a plurality of positioning holes, a positioning column penetrates through the positioning groove and the positioning holes, and the positioning column is suitable for fixing the side sliding plate on the positioning plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011335121.3A CN112325659B (en) | 2020-11-24 | 2020-11-24 | Air control device for silicon nitride ceramic sintering furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011335121.3A CN112325659B (en) | 2020-11-24 | 2020-11-24 | Air control device for silicon nitride ceramic sintering furnace |
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| Publication Number | Publication Date |
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| CN112325659A true CN112325659A (en) | 2021-02-05 |
| CN112325659B CN112325659B (en) | 2022-05-17 |
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| CN202011335121.3A Active CN112325659B (en) | 2020-11-24 | 2020-11-24 | Air control device for silicon nitride ceramic sintering furnace |
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| CN209594267U (en) * | 2019-01-08 | 2019-11-08 | 石河子大学 | A kind of dedicated water-fertilizer integral oxygenation heating irrigation equipment in farmland |
| CN110685938A (en) * | 2019-10-09 | 2020-01-14 | 伦登风机科技(天津)有限公司 | Meridian acceleration centrifugal fan impeller of high-temperature industrial furnace |
| CN209959521U (en) * | 2019-05-05 | 2020-01-17 | 河北普纳德风机制造有限公司 | Centrifugal high-temperature circulating fan for industrial furnace |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU1679163A1 (en) * | 1989-06-26 | 1991-09-23 | Предприятие П/Я В-8402 | Furnace circulation fan |
| JPH0518681A (en) * | 1991-07-10 | 1993-01-26 | Daido Steel Co Ltd | Hot air circulating furnace |
| CN201531438U (en) * | 2009-06-22 | 2010-07-21 | 潮州升煌陶瓷制作有限公司 | Improved centrifugal combustion-supporting blower used in reduction zone of ceramic kiln |
| CN204854370U (en) * | 2015-06-11 | 2015-12-09 | 苏州天铭磁业有限公司 | Hot circulating device of manganese zinc ferrite core sintering |
| CN109028951A (en) * | 2018-06-06 | 2018-12-18 | 中车永济电机有限公司 | Flatbed wind power generator rotor heating furnace structure |
| CN108953223A (en) * | 2018-08-16 | 2018-12-07 | 泛仕达机电股份有限公司 | A kind of centrifugal impeller |
| CN209594267U (en) * | 2019-01-08 | 2019-11-08 | 石河子大学 | A kind of dedicated water-fertilizer integral oxygenation heating irrigation equipment in farmland |
| CN209459391U (en) * | 2019-01-28 | 2019-10-01 | 无锡市绿色热处理设备有限公司 | A kind of equal blower structure of bidirectional guide |
| CN209959521U (en) * | 2019-05-05 | 2020-01-17 | 河北普纳德风机制造有限公司 | Centrifugal high-temperature circulating fan for industrial furnace |
| CN110685938A (en) * | 2019-10-09 | 2020-01-14 | 伦登风机科技(天津)有限公司 | Meridian acceleration centrifugal fan impeller of high-temperature industrial furnace |
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| CN112325659B (en) | 2022-05-17 |
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