CN209744977U - Bell-type atmosphere furnace - Google Patents
Bell-type atmosphere furnace Download PDFInfo
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- CN209744977U CN209744977U CN201920345044.6U CN201920345044U CN209744977U CN 209744977 U CN209744977 U CN 209744977U CN 201920345044 U CN201920345044 U CN 201920345044U CN 209744977 U CN209744977 U CN 209744977U
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Abstract
The utility model discloses a bell jar formula atmosphere furnace, including furnace and business turn over gas subassembly, the business turn over gas subassembly is including giving vent to anger pipeline and many admission lines, give vent to anger pipeline and many admission lines all follow the vertical furnace that inserts in furnace's top, and the pipeline of giving vent to anger is located the furnace center, and many admission lines are the circumferencial direction around the furnace center and arrange, and a plurality of gas pockets are all seted up along the axial to the pipeline of giving vent to anger and admission line. The utility model discloses keep warm effectual, be convenient for installation maintenance, gaseous stability and temperature stability are good, little to the thermocouple influence.
Description
Technical Field
The utility model relates to a bell jar type atmosphere furnace.
Background
Bell jar type atmosphere furnaces are increasingly applied to the production of nickel electrode chip type ceramic capacitor chips, and in order to meet the production requirements of manufacturers on the capacitor chips, the bell jar furnaces with more convenient and more reasonable atmosphere modes need to be manufactured.
The gas inlet and outlet assembly is an important component of the bell jar type atmosphere furnace and mainly comprises a gas inlet pipeline and a gas outlet pipeline which are used for releasing gas into a hearth and discharging waste gas in the hearth. In the air inlet and outlet assembly of the existing bell-type atmosphere furnace, an air inlet pipeline and an air outlet pipeline are generally transversely inserted into a hearth from the side wall of the hearth. This structure has the following disadvantages:
1. The air inlet pipeline and the air outlet pipeline need to be installed by drilling holes in the side wall of the hearth, and the strength and the heat insulation effect of the hearth are easily damaged because the side wall of the hearth is made of a fireproof heat insulation material;
2. In order to ensure the uniformity of gas in the hearth, the gas inlet pipelines need to be drilled and inserted from different directions along the circumference of the hearth, and pipelines outside the hearth need to be arranged around the hearth, so that the overall structure is large in size, time-consuming to install, and troublesome to rotate around the hearth during maintenance and overhaul;
3. The gas can only be concentrated on the plane release that electronic component product place, and it is also concentrated on a plane more above to give vent to anger, and consequently it is not even enough to give vent to anger in vertical direction, and the inside gas stability of furnace is poor, and temperature stability also can reduce, and simultaneously, the thermocouple in the furnace also receives gas flow to disturb easily.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in: aiming at the defects in the prior art, the bell-type atmosphere furnace has good heat preservation effect, convenient installation and maintenance, good gas stability and temperature stability and small influence on a thermocouple.
In order to solve the technical problem, the utility model discloses a following technical scheme:
The utility model provides a bell jar formula atmosphere furnace, includes furnace and business turn over gas subassembly, the business turn over gas subassembly includes outlet duct and many admission lines, outlet duct and many admission lines all follow the vertical furnace that inserts in furnace's top, and outlet duct is located the furnace center, and many admission lines are the circumferencial direction around the furnace center and arrange, and outlet duct and admission line all set up a plurality of gas pockets along the axial.
further, the air holes on each air inlet pipeline face to the center of the hearth; or, along clockwise or anticlockwise, the air hole on each air inlet pipeline faces to the adjacent air inlet pipeline; or, the air holes on each air inlet pipeline face to the tangential direction of the arrangement circumference of the air inlet pipelines along the clockwise direction or the anticlockwise direction.
further, the pore diameter of the air hole on the air inlet pipeline is gradually reduced from top to bottom.
Furthermore, a plurality of rows of axially arranged air holes are formed in the air outlet pipeline, and the air holes are uniformly spaced.
Furthermore, the air inlet and outlet assembly further comprises an air inlet outer pipe, an air inlet ring pipe and an air outlet outer pipe, the air inlet ring pipe is located on the outer side of the top of the hearth, the air inlet ring pipe is of an annular structure and is concentrically arranged with the hearth, the air inlet outer pipe and the air inlet pipeline are both connected with the air inlet ring pipe through hoses, and the air outlet pipeline is connected with the air outlet outer pipe through hoses.
Compared with the prior art, the utility model has the advantages of: the utility model discloses because in gas outlet pipe and admission line all followed the vertical furnace that inserts in furnace's top, can not destroy the furnace side wall of making by refractory insulation material to the heat preservation effect has been guaranteed. Moreover, all pipelines are concentrated at the top of the hearth, so that the installation and maintenance are convenient; meanwhile, due to the natural phenomenon that heat in the hearth naturally moves upwards, the pipeline above the top of the hearth can absorb the heat at the top of the hearth, so that inlet air is preheated to a certain degree, the heat difference of the air entering the hearth is reduced, and the effect of reducing temperature fluctuation is achieved. Moreover, the gas inlet pipeline and the gas outlet pipeline are provided with a plurality of gas holes along the axial direction, so that gas can be released and discharged at different height positions, the gas inlet and the gas discharge are more uniform, and the gas stability and the temperature stability in the hearth are higher; meanwhile, the flow of single plane gas in the hearth is small, and the influence on the temperature measurement of the thermocouple is small.
Drawings
fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic view of the sectional structure of the front view of the present invention.
Fig. 3 is a schematic top sectional view of the present invention.
Fig. 4 is a schematic top sectional view of the present invention (the air hole orientation of the air inlet duct is different from that of fig. 3).
Fig. 5 is an enlarged schematic structural view of the air inlet duct of the present invention after rotating 90 degrees counterclockwise.
Fig. 6 is an enlarged schematic structural view of the air outlet pipe of the present invention after rotating 90 degrees counterclockwise.
Fig. 7 is a schematic cross-sectional view of the air outlet pipe of the present invention.
Illustration of the drawings: 1. a hearth; 2. a thermocouple; 3. an air intake duct; 4. an air outlet pipe; 5. air holes; 6. an air intake outer tube; 7. an air inlet ring pipe; 8. an air outlet outer pipe; 9. and (5) producing the product.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, and it should be noted that the scope of the present invention is not limited to the following embodiments, and any modifications and decorations made by the present invention should be considered as the scope of the present invention without departing from the principle of the present invention.
As shown in figures 1 to 4, the bell-type atmosphere furnace of the present invention comprises a furnace chamber 1, a thermocouple 2 and an air inlet and outlet assembly, wherein the air inlet and outlet assembly comprises an air outlet pipe 4 and a plurality of air inlet pipes 3, the thermocouple 2 is used for measuring the temperature in the furnace chamber 1, and the air outlet pipe 4 and the air inlet pipes 3 are made of heat-resistant ceramics. Thermocouple 2, gas outlet pipe way 4 and many inlet duct 3 all follow the vertical furnace 1 that inserts in furnace 1's top, and gas outlet pipe way 4 is located furnace 1 center, and many inlet duct 3 are arranged around furnace 1 center and are the circumferencial direction, and a plurality of gas pockets 5 are all seted up along the axial to gas outlet pipe way 4 and inlet duct 3.
Because the air outlet pipeline 4 and the air inlet pipeline 3 are vertically inserted into the hearth 1 from the top of the hearth 1, the side wall of the hearth 1 made of a fireproof heat-insulating material cannot be damaged, and therefore the heat-insulating effect is guaranteed. Moreover, all pipelines are centralized at the top of the hearth 1, so that the installation and maintenance are convenient. Moreover, the gas inlet pipeline 3 and the gas outlet pipeline 4 are provided with a plurality of gas holes 5 along the axial direction, so that gas can be released and discharged at different height positions, the gas inlet and the gas discharge are more uniform, and the gas stability and the temperature stability in the hearth 1 are higher; meanwhile, the flow of single plane gas in the hearth 1 is small, and the influence on the temperature measurement of the thermocouple 2 is small.
As shown in fig. 3, the air holes 5 of each air inlet duct 3 are directed toward the center of the furnace 1 (the arrows in the figure indicate the direction of the air holes 5).
As shown in fig. 4, in another embodiment of the present invention, the air hole 5 of each air inlet pipe 3 faces the adjacent air inlet pipe 3 in a clockwise direction (or in a counterclockwise direction) (the arrow indicates the orientation of the air hole 5). The arrangement mode can prevent the released gas from directly blowing to the product 9, so that a rotary vortex is formed during gas inlet to play a role in stirring, and the temperature and the atmosphere in the hearth 1 are more uniform.
Alternatively, in other embodiments, the air holes 5 on the air inlet pipe 3 may be oriented as follows: in the clockwise direction (or in the counter-clockwise direction) the air holes 5 in each air inlet duct 3 are oriented tangentially to the circumference of the air inlet duct 3. In this way, the released gas is prevented from directly blowing to the product 9, so that a rotating vortex is formed during gas inlet, thereby stirring, and the temperature and the atmosphere in the hearth 1 are more uniform.
As shown in fig. 5, the diameter of the air hole 5 of the air inlet pipe 3 is gradually reduced from top to bottom. Because the tail end of the air inlet pipeline 3 is sealed, the inlet air has certain pressure, when the air enters the air inlet pipeline 3, the air can rush to the tail end of the air inlet pipeline 3 due to pressure and inertia, so that the lower airflow of the air inlet pipeline 3 is concentrated, and the upper airflow is smaller. Therefore, the pore diameter of the air hole 5 at the lower part of the air inlet pipeline 3 is reduced to reduce the flow rate, the pore diameter of the air hole 5 at the upper part of the air inlet pipeline 3 is increased to increase the flow rate, and the air inlet amount at the upper part and the lower part of the air inlet pipeline 3 can be more uniform.
Furthermore, a plurality of rows of axially arranged air holes 5 are formed in the air outlet pipeline 4, and the air holes 5 are uniformly spaced. As shown in fig. 6 and 7, the air outlet pipe 4 in this embodiment is provided with 3 rows of axially arranged air holes 5, and the air holes 5 in each row are uniformly spaced by 120 degrees. The arrangement is beneficial to absorbing the waste gas in all directions in the hearth 1, and further improves the uniformity of exhaust.
As shown in fig. 1, in this embodiment, the air inlet and outlet assembly further includes an air inlet outer tube 6, an air inlet ring tube 7 and an air outlet outer tube 8, which are located outside the top of the furnace 1, the air inlet ring tube 7 is in an annular structure and is concentrically arranged with the furnace 1, the air inlet outer tube 6 and the air inlet pipe 3 are both connected to the air inlet ring tube 7 through a hose, and the air outlet pipe 4 is connected to the air outlet outer tube 8 through a hose.
Claims (5)
1. A bell jar type atmosphere furnace comprises a hearth and an air inlet and outlet assembly, wherein the air inlet and outlet assembly comprises an air outlet pipeline and a plurality of air inlet pipelines, and the bell jar type atmosphere furnace is characterized in that: the gas outlet pipeline and the gas inlet pipelines are vertically inserted into the hearth from the top of the hearth, the gas outlet pipeline is located at the center of the hearth, the gas inlet pipelines are arranged in the circumferential direction around the center of the hearth, and the gas outlet pipeline and the gas inlet pipelines are provided with a plurality of gas holes in the axial direction.
2. The bell jar atmosphere furnace of claim 1 wherein: the air holes on the air inlet pipelines face to the center of the hearth; or, along clockwise or anticlockwise, the air hole on each air inlet pipeline faces to the adjacent air inlet pipeline; or, the air holes on each air inlet pipeline face to the tangential direction of the arrangement circumference of the air inlet pipelines along the clockwise direction or the anticlockwise direction.
3. The bell jar atmosphere furnace of claim 2 wherein: the pore diameter of the air hole on the air inlet pipeline is gradually reduced from top to bottom.
4. The bell jar atmosphere furnace of claim 1 or 2 or 3 wherein: a plurality of rows of axially arranged air holes are formed in the air outlet pipeline, and the air holes are uniformly spaced.
5. the bell jar atmosphere furnace of claim 1 or 2 or 3 wherein: the air inlet and outlet assembly further comprises an air inlet outer pipe, an air inlet ring pipe and an air outlet outer pipe, the air inlet ring pipe is located on the outer side of the top of the hearth, the air inlet ring pipe is of an annular structure and is concentrically arranged with the hearth, the air inlet outer pipe and the air inlet pipeline are both connected with the air inlet ring pipe through hoses, and the air outlet pipeline is connected with the air outlet outer pipe through hoses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920345044.6U CN209744977U (en) | 2019-03-19 | 2019-03-19 | Bell-type atmosphere furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920345044.6U CN209744977U (en) | 2019-03-19 | 2019-03-19 | Bell-type atmosphere furnace |
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| Publication Number | Publication Date |
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| CN209744977U true CN209744977U (en) | 2019-12-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920345044.6U Active CN209744977U (en) | 2019-03-19 | 2019-03-19 | Bell-type atmosphere furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870028A (en) * | 2019-03-19 | 2019-06-11 | 肇庆市昊达机电设备有限公司 | A kind of elevator electrical furnace |
| CN112556422A (en) * | 2020-11-23 | 2021-03-26 | 宁波众兴新材料科技有限公司 | Special ceramic fiber cracking device and method |
-
2019
- 2019-03-19 CN CN201920345044.6U patent/CN209744977U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109870028A (en) * | 2019-03-19 | 2019-06-11 | 肇庆市昊达机电设备有限公司 | A kind of elevator electrical furnace |
| CN112556422A (en) * | 2020-11-23 | 2021-03-26 | 宁波众兴新材料科技有限公司 | Special ceramic fiber cracking device and method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 526060 plant A2, Taining Industrial Park (north side of Lingshan sewage plant), Fudong Road, Duanzhou District, Zhaoqing City, Guangdong Province Patentee after: Guangdong Haoda Intelligent Equipment Technology Co.,Ltd. Address before: 526070 After Da Deli Duan Inkstone Factory at Xintang 321 National Road, Kengkou Sucun, Dinghu District, Zhaoqing City, Guangdong Province Patentee before: ZHAOQING HAODA ELECTRICAL EQUIPMENT CO.,LTD. |
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| CP03 | Change of name, title or address |