CN214276520U - Rotary bell jar furnace - Google Patents
Rotary bell jar furnace Download PDFInfo
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- CN214276520U CN214276520U CN202023205697.6U CN202023205697U CN214276520U CN 214276520 U CN214276520 U CN 214276520U CN 202023205697 U CN202023205697 U CN 202023205697U CN 214276520 U CN214276520 U CN 214276520U
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Abstract
The utility model discloses a rotation type bell jar stove, including having furnace's furnace body and being used for sealing furnace's furnace gate, install heating device in the furnace, furnace is connected with air intake system and exhaust system, and furnace divide into the upper portion region and is located the lower part region of upper portion region below, and heating device is including the first heating element and the second heating element of independent control respectively, and first heating element is located the upper portion region, and the second heating element is located the lower part region. The rotary bell-jar furnace has the advantages of simple structure, low cost, easy assembly and maintenance, good temperature uniformity and the like.
Description
Technical Field
The utility model relates to a heat treatment kiln technical field, concretely relates to rotation type bell jar furnace.
Background
In the field of new materials such as capacitors, electronic ceramics, powder metallurgy and the like, products are increasingly developed towards high-end, for example, MLCCs (multi-layer ceramic capacitors) are widely applied to various high-frequency and low-frequency capacitors, have the characteristics of high reliability, high precision, high integration, low power consumption, large capacity, small volume, low cost and the like, play roles of decoupling, coupling, filtering, bypassing, resonance and the like, and mainly develop towards miniaturization, high-capacity quantization, high-frequency transformation, high-temperature transformation and high-voltage transformation.
The sintering equipment for sintering the new materials generally adopts an electric heating kiln, and according to the sintering temperature and different products, an electric heating wire, a silicon carbide rod, a silicon molybdenum rod and the like can be used as heating elements. The whole sintering process comprises four processes of glue discharging, temperature rising, high temperature, heat preservation, sintering, temperature reduction and heat preservation tempering. With the development of new products and the application of new processes, higher requirements are put forward on sintering equipment, which is specifically shown in the following steps:
firstly, the oxygen content must be accurately controlled, which requires the cooperation of the whole gas distribution system, the gas inlet system, the gas outlet system and the furnace body sealing system;
secondly, the temperature uniformity needs to be guaranteed, and the cooperative matching of a heating system and an atmosphere system is needed.
However, the heating elements of the heating system of the existing atmosphere rotary bell jar furnace are installed in a hoisting mode from the top of the furnace or in a transverse mode from the side of the furnace, and these installation modes cause poor temperature uniformity in the furnace, so that higher process requirements are difficult to achieve.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough of prior art existence, provide a simple structure, with low costs, easily assembly maintenance, the good rotation type bell jar stove of temperature homogeneity.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the rotary bell jar furnace comprises a furnace body with a hearth and a furnace door used for sealing the hearth, wherein a heating device is installed in the hearth, the hearth is connected with an air inlet system and an exhaust system, the hearth is divided into an upper area and a lower area located below the upper area, the heating device comprises a first heating assembly and a second heating assembly which are respectively and independently controlled, the first heating assembly is located in the upper area, and the second heating assembly is located in the lower area.
As a further improvement of the above technical solution:
the first heating assembly includes a plurality of first heating elements spaced around an axis of rotation of the oven door, and the second heating assembly includes a plurality of second heating elements spaced around the axis of rotation of the oven door.
The first heating element is installed at the top of the hearth in a hoisting mode, and the second heating elements are installed on the peripheral side walls of the hearth.
And spaces are reserved between the first heating element and the second heating element and the peripheral side wall of the hearth.
The heating device also comprises an independently controlled third heating element, and the third heating element is installed at the top of the hearth in a hoisting mode and is positioned on the rotating axis of the furnace door.
The air inlet system is including stretching into furnace and the many intake pipes that extend from top to bottom and arrange, many the intake pipe encircles the axis of rotation interval arrangement of furnace gate, the one end of each intake pipe is connected with the air supply as the inlet end, is equipped with on the pipe wall of each intake pipe with furnace intercommunication and along the air inlet of upper and lower direction interval arrangement in proper order, and is a plurality of the opening size of air inlet configures into the flow of giving vent to anger unanimously or unanimous basically of each air inlet when gaseous by intake pipe one end entering.
The upper end of each air inlet pipe penetrates and extends out of the furnace body and is connected with the air source, and the opening areas of the plurality of air inlets on the air inlet pipes are reduced one by one along the direction from top to bottom.
The opening direction of the air inlet faces to the rotation axis of the oven door.
The furnace body is provided with an air box, each air inlet pipe is connected with the air box, and the air box is connected with an air source through a pipeline.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses a rotation type bell jar stove divide into upper portion region with furnace and is located the lower part region of the regional below in upper portion, at the first heating element of upper portion region installation, at the regional second heating element of installation in lower part, first heating element and second heating element independent control respectively are convenient for adjust the furnace difference in temperature from top to bottom to the ascending temperature uniformity of upper and lower side in the improvement furnace. The rotary bell-jar furnace also has the advantages of simple structure, low cost and easy assembly and maintenance.
Drawings
FIG. 1 is a perspective view of a rotary bell jar furnace.
FIG. 2 is a schematic main sectional structure view of the furnace body.
FIG. 3 is a schematic top view of the furnace body.
Fig. 4 is a front view structural diagram of the intake pipe.
Illustration of the drawings:
1. a furnace body; 11. a hearth; 2. a furnace door; 3. a heating device; 31. a first heating element; 32. a second heating element; 33. a third heating element; 4. an air intake system; 41. an air inlet pipe; 411. an air inlet; 42. a gas tank; 5. an exhaust system.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and specific embodiments.
As shown in fig. 1 and 2, the rotary bell jar furnace of the present embodiment includes a furnace body 1 having a furnace chamber 11 and a furnace door 2 for closing the furnace chamber 11, a heating device 3 is installed in the furnace chamber 11, the furnace chamber 11 is connected with an air intake system 4 and an air exhaust system 5, the furnace chamber 11 is divided into an upper region and a lower region below the upper region, the heating device 3 includes a first heating assembly and a second heating assembly which are independently controlled, the first heating assembly is located in the upper region, and the second heating assembly is located in the lower region. This rotation type bell jar stove is divided into upper portion region and the lower part region that is located the regional below in upper portion with furnace 11, at the regional first heating element of installation in upper portion, at the regional second heating element of installation in lower part, first heating element and second heating element independent control respectively are convenient for adjust the temperature difference about furnace 11 to improve the ascending temperature uniformity of direction about in the furnace 11. The rotary bell-jar furnace also has the advantages of simple structure, low cost and easy assembly and maintenance.
In this embodiment, the first heating assembly comprises a plurality of first heating elements 31 arranged at intervals around the axis of rotation of the oven door 2, and the second heating assembly comprises a plurality of second heating elements 32 arranged at intervals around the axis of rotation of the oven door 2. The plurality of first heating elements 31 and the plurality of second heating elements 32 are arranged around the rotation axis of the furnace door 2 at intervals, and are heated at a plurality of positions in the circumferential direction in the hearth 11, so that the temperature uniformity in the hearth 11 can be further improved.
In this embodiment, the first heating element 31 is installed at the top of the furnace 11 by using a hoisting method, and the second heating elements 32 are installed on the peripheral side walls of the furnace 11, so that the installation and maintenance are convenient, and too much space in the furnace 11 is not occupied.
In this embodiment, the first heating element 31 and the second heating element 32 are spaced from the peripheral side wall of the hearth 11. That is, the first heating element 31 and the second heating element 32 are both suspended in the hearth 11, which is beneficial to fully heating the gas in the hearth 11 and reducing the temperature difference between the middle part and the periphery of the hearth 11.
In this embodiment, the heating device 3 further comprises an independently controlled third heating element 33, and the third heating element 33 is installed at the top of the hearth 11 and is located on the rotation axis of the furnace door 2. The third heating element 33 heats at the position of the rotation axis of the furnace door 2, so that the temperature difference between the middle part and the periphery of the hearth 11 is reduced, and the temperature uniformity is further improved.
In this embodiment, as shown in fig. 1 to 4, the air inlet system 4 includes a plurality of air inlet pipes 41 extending into the furnace 11 and extending up and down, the plurality of air inlet pipes 41 are arranged around the rotation axis of the furnace door 2 at intervals, one end of each air inlet pipe 41 is connected to an air source as an air inlet end, air inlets 411 communicated with the furnace 11 and arranged at intervals in sequence along the up-down direction are provided on the pipe wall of each air inlet pipe 41, and the openings of the plurality of air inlets 411 are configured to have the same or substantially the same outlet flow rate of each air inlet 411 when air enters from one end of the air inlet pipe 41. Air intake system 4 adopts many intake pipes 41, many intake pipes 41 encircle the axis of rotation interval arrangement of furnace door 2, be equipped with on the pipe wall of each intake pipe 41 with furnace 11 intercommunication and along the air inlet 411 of upper and lower direction interval arrangement in proper order, can make gaseous a plurality of positions in furnace 11 circumference and upper and lower direction get into furnace 11, thereby it is more even to make admit air, do benefit to the homogeneity that improves temperature and atmosphere in furnace 11, and simultaneously, the opening size of a plurality of air inlets 411 on each intake pipe 41 pipe wall configures into when gaseous by intake pipe 41 one end entering into the unanimous or unanimous basically of each air inlet 411, make the flow that each position admitted air also unanimous or unanimous basically, can further improve the homogeneity that admits air, make the homogeneity of temperature and atmosphere in furnace 11 better.
In another embodiment, a plurality of air inlet pipes 41 are preferably arranged at regular intervals around the rotation axis of the oven door 2, and a further preferred number of air inlet pipes 41 is six.
In this embodiment, the upper end of each air inlet pipe 41 penetrates and extends out of the furnace body 1 and is connected with an air source, and the opening areas of the plurality of air inlets 411 on each air inlet pipe 41 are reduced one by one along the direction from top to bottom. This kind of top air inlet 411 open area is big, the little form of below air inlet 411 open area, and when gas got into intake pipe 41 from the upper end of intake pipe 41, can be preferentially get into furnace 11 from air inlet 411 of below under the effect of airflow inertia to the flow of giving vent to anger of each air inlet 411 is unanimous or unanimous basically when realizing that gas got into by intake pipe 41 upper end. This is achieved by merely arranging the opening area of each intake port 411, and has the advantages of a simple and compact structure, easy manufacturing, and low cost. In the embodiment, the upper end of each air inlet pipe 41 penetrates through and extends out of the furnace body 1 and is connected with the air source, so that the installation of the air inlet pipes 41 is facilitated, the air inlet pipes 41 are fixed relative to the furnace body 1, the connection with the air source is facilitated, and the sealing is easily ensured.
In this embodiment, the opening direction of the air inlet 411 faces the rotation axis of the furnace door 2, so that the air entering the hearth 11 flows to the material loaded on the furnace door 2, and is beneficial to fully and uniformly contacting the material, especially when the furnace door 2 drives the material to rotate, the contact between the material and the air is more fully and uniformly.
In this embodiment, the furnace body 1 is provided with an air box 42, each air inlet pipe 41 is connected with the air box 42, and the air box 42 is connected with an air source through a pipeline. Set up gas tank 42, the heat of usable furnace body 1 preheats gas on the one hand, realizes preheating the utilization, reduces the energy consumption, and on the other hand gas tank 42 plays the effect that reduces the gas velocity of flow, makes gas flow velocity slow down behind gas tank 42, slowly gets into furnace 11 through intake pipe 41 afterwards, can make atmosphere and temperature more even in the furnace 11. In another embodiment, the air box 42 is preferably annular to facilitate connection to each air inlet conduit 41. In another embodiment, the gas box 42 is preferably arranged on the top of the furnace body 1 and is attached to the furnace body 1, so that the preheating utilization is more facilitated due to the higher temperature of the furnace top.
The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. For those skilled in the art, the modifications and changes obtained without departing from the technical idea of the present invention shall be considered as the protection scope of the present invention.
Claims (9)
1. The utility model provides a rotation type bell jar furnace, is including furnace body (1) that has furnace (11) and be used for sealing furnace gate (2) of furnace (11), install heating device (3) in furnace (11), furnace (11) are connected with air intake system (4) and exhaust system (5), its characterized in that: the heating device is characterized in that the hearth (11) is divided into an upper area and a lower area below the upper area, the heating device (3) comprises a first heating assembly and a second heating assembly which are independently controlled respectively, the first heating assembly is located in the upper area, and the second heating assembly is located in the lower area.
2. The rotary bell jar furnace of claim 1 wherein: the first heating assembly comprises a plurality of first heating elements (31) arranged at intervals around the axis of rotation of the oven door (2), and the second heating assembly comprises a plurality of second heating elements (32) arranged at intervals around the axis of rotation of the oven door (2).
3. The rotary bell jar furnace of claim 2 wherein: the first heating element (31) is installed at the top of the hearth (11) in a hoisting mode, and the second heating element (32) is installed on the peripheral side wall of the hearth (11).
4. The rotary bell jar furnace of claim 2 wherein: and a space is reserved between the first heating element (31) and the second heating element (32) and the peripheral side wall of the hearth (11).
5. The rotary bell jar furnace of claim 1 wherein: the heating device (3) further comprises an independently controlled third heating element (33), and the third heating element (33) is installed at the top of the hearth (11) in a hoisting mode and is located on a rotating axis of the furnace door (2).
6. The rotary bell jar furnace of any one of claims 1 to 5 wherein: intake system (4) are including stretching into many intake pipe (41) that furnace (11) and upper and lower extension were arranged, many intake pipe (41) encircle the axis of rotation interval arrangement of furnace door (2), the one end of each intake pipe (41) is connected with the air supply as the inlet end, is equipped with on the pipe wall of each intake pipe (41) with furnace (11) intercommunication and along upper and lower direction interval arrangement's air inlet (411) in proper order, and is a plurality of the opening size of air inlet (411) configures into the flow of giving vent to anger of each air inlet (411) unanimously or unanimous basically when gaseous by intake pipe (41) one end is advanced.
7. The rotary bell jar furnace of claim 6 wherein: the upper end of each air inlet pipe (41) penetrates through and extends out of the furnace body (1) and is connected with the air source, and the opening areas of the plurality of air inlets (411) on each air inlet pipe (41) are reduced one by one along the direction from top to bottom.
8. The rotary bell jar furnace of claim 7 wherein: the opening direction of the air inlet (411) faces to the rotation axis of the oven door (2).
9. The rotary bell jar furnace of claim 6 wherein: the furnace body (1) is provided with an air box (42), each air inlet pipe (41) is connected with the air box (42), and the air box (42) is connected with an air source through a pipeline.
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CN202023205697.6U CN214276520U (en) | 2020-12-25 | 2020-12-25 | Rotary bell jar furnace |
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CN202023205697.6U CN214276520U (en) | 2020-12-25 | 2020-12-25 | Rotary bell jar furnace |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115930602A (en) * | 2022-12-13 | 2023-04-07 | 肇庆市宏华电子科技有限公司 | Bell jar furnace for processing ceramic circuit element |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115930602A (en) * | 2022-12-13 | 2023-04-07 | 肇庆市宏华电子科技有限公司 | Bell jar furnace for processing ceramic circuit element |
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