CN209416034U - A kind of furnace pressure control device of bell-type furnace - Google Patents
A kind of furnace pressure control device of bell-type furnace Download PDFInfo
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- CN209416034U CN209416034U CN201822058010.7U CN201822058010U CN209416034U CN 209416034 U CN209416034 U CN 209416034U CN 201822058010 U CN201822058010 U CN 201822058010U CN 209416034 U CN209416034 U CN 209416034U
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Abstract
The utility model discloses a kind of furnace pressure control devices of bell-type furnace, including bell jar furnace body and drain tap component, drain tap component is connected by a gas cooling component with the burner hearth of bell jar furnace body, gas cooling component includes gas exhaust piping, the inlet end of gas exhaust piping is connected to the burner hearth of bell jar furnace body, the outlet side of gas exhaust piping is connected with drain tap component, and gas exhaust piping is equipped with heat exchanger and air exhauster.The utility model has many advantages, such as that long service life, reliability are high, at low cost, easy to maintain.
Description
Technical field
The utility model relates to be heat-treated kiln technical field, and in particular to a kind of furnace pressure control device of bell-type furnace.
Background technique
Bell-type furnace is because it is with more excellent performance, lower energy consumption, more flexible operation and better sintered products
Quality is more and more widely used by the material productions such as vast soft magnetic ferrite producer, has become soft magnetic ferrite etc.
The core of material production is sintered equipment.Temperature, atmosphere and the type of cooling are the important sintered bars of the material productions such as soft magnetic ferrite
Part, higher and higher recently as performance requirement of the market to materials such as soft magnetic materials, furnace pressure is increasingly becoming a Xiang Ying
An important factor for ringing product quality, for certain high-end products, inappropriate furnace pressure can make the inductance of final products
Equal critical technical parameters are unable to reach requirement, therefore vast producer proposes more harsh want to the control of bell-type furnace furnace pressure
It asks.
The controling of the pressure of the oven of soft magnetic materials sintering is primarily referred to as the controling of the pressure of the oven of temperature descending section.To avoid in manganese-zinc ferrite
Mn2+ is oxidized to Mn3+, and temperature descending section need to control oxygen content in furnace and be in extremely low level (50ppm), and be between avoiding Elema
It strikes sparks and burns out Elema, inert gas need to be passed through into furnace to control oxygen content, this will lead to the fluctuation of furnace pressure.Due to bell jar
Furnace furnace cavity is very big, is a complicated Large-lag System, and soft magnetic materials also have to sintering temperature, atmosphere it is high
It is required that.If controling of the pressure of the oven is improper, furnace inner environment is be easy to cause to fluctuate, destroys in-furnace temperature equilibrium gas atmosphere, properties of product are made
At negative effect.Traditional controling of the pressure of the oven mode is to be located at the exhaust valve of roof of the furnace by being opened and closed and realize, but due to soft
Up to 1400 DEG C, common valve is difficult to be used for a long time at such high temperatures magnetic material sintering temperature, and there are service lifes, and low, stabilization can
By property difference and problem at high cost.Also, exhaust valve is directly connected to burner hearth, and when exhaust can affect greatly furnace pressure, right
The stability influence of furnace pressure is larger.In addition, individually the speed of exhaust valve exhaust is only capable of controlling by control valve aperture, control
Difficulty processed is big, it is difficult to adapt to the different exhaust velocities requirement of different furnace pressure ranges.
Utility model content
The technical problems to be solved in the utility model is to overcome the shortcomings of the prior art, provides a kind of service life
The furnace pressure control device of bell-type furnace long, reliability is high, at low cost, easy to maintain.
In order to solve the above technical problems, the utility model uses following technical scheme:
A kind of furnace pressure control device of bell-type furnace, including bell jar furnace body and drain tap component, the drain tap group
Part is connected by a gas cooling component with the burner hearth of bell jar furnace body, and the gas cooling component includes gas exhaust piping, described
The inlet end of gas exhaust piping is connected to the burner hearth of bell jar furnace body, outlet side and the drain tap component phase of the gas exhaust piping
Even, the gas exhaust piping is equipped with heat exchanger and air exhauster.
As a further improvement of the above technical scheme:
The drain tap component includes more than two vent valves, and the bore of more than two vent valves increases one by one.
The drain tap component includes two vent valves, and two vent valves are respectively that the first vent valve and second are deflated
Valve, the bore of first vent valve are greater than the bore of the second vent valve, and first vent valve passes through big exhaust branch pipe and row
Air pipe is connected, and second vent valve is connected by small exhaust branch pipe with gas exhaust piping, and the diameter of the big exhaust branch pipe is big
In the diameter of small exhaust branch pipe, and the communication port of the big exhaust branch pipe and gas exhaust piping is located at the small exhaust branch pipe and exhaust
Between the communication port and heat exchanger of pipeline.
The diameter of the big exhaust branch pipe is 35~50mm, and the diameter of the small exhaust branch pipe is 15~30mm.
It further include exhaust main, more than two vent valves are connected with the exhaust main.
The drain tap component is a vent valve.
The heat exchanger is shell-and-tube heat exchanger, and the tube side of the shell-and-tube heat exchanger is serially connected in the gas exhaust piping,
The shell side of the shell-and-tube heat exchanger is serially connected in a cooling medium pipeline.
The air exhauster is set to the tube side outlet end of shell-and-tube heat exchanger.
The outlet side of the gas exhaust piping is also connected to the burner hearth of bell jar furnace body.
Compared with the prior art, the advantages of the utility model are: the furnace pressure control device of the bell-type furnace of the utility model,
Its drain tap component is connected by gas cooling component with the burner hearth of bell jar furnace body, when adjusting furnace pressure by exhaust in burner hearth
High-temperature gas flow to drain tap component through gas exhaust piping, reach drain tap component can first be cooled down by heat exchanger, thus
Gas be can avoid because of the excessively high damage to drain tap component of temperature, greatly prolong the service life of drain tap component, improved
The reliability of drain tap component operation, can reduce production cost and maintenance difficulties.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the furnace pressure control device of bell-type furnace.
Marginal data:
1, bell jar furnace body；2, drain tap component；21, the first vent valve；22, the second vent valve；23, big exhaust branch
Pipe；24, small exhaust branch pipe；3, gas exhaust piping；4, heat exchanger；5, air exhauster.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, the furnace pressure control device of the bell-type furnace of the present embodiment, including bell jar furnace body 1 and drain tap group
Part 2, drain tap component 2 are connected by a gas cooling component with the burner hearth of bell jar furnace body 1, and gas cooling component includes row
The inlet end of air pipe 3, gas exhaust piping 3 is connected to the burner hearth of bell jar furnace body 1, the outlet side of gas exhaust piping 3 and drain tap
Component 2 is connected, and gas exhaust piping 3 is equipped with heat exchanger 4 and air exhauster 5, and air exhauster 5 is for passing through the high-temperature gas in burner hearth
Gas exhaust piping 3 leads to drain tap component 2, and heat exchanger 4 is for the high-temperature gas in cooled exhaust pipe road 3.Controling of the pressure of the oven dress
The drain tap component 2 set is connected by gas cooling component with the burner hearth of bell jar furnace body 1, furnace when adjusting furnace pressure by exhaust
High-temperature gas in thorax flows to drain tap component 2 through gas exhaust piping 3, can be first cold by heat exchanger 4 reaching drain tap component 2
But, to can avoid gas because of the excessively high damage to drain tap component 2 of temperature, drain tap component 2 can be greatly prolonged
Service life improves the reliability that drain tap component 2 works, and reduces production cost and maintenance difficulties.And drain tap
Component 2 is connected by independent gas exhaust piping 3 with burner hearth, will not cause shadow to environment is sintered in burner hearth during being vented pressure regulation
It rings, conducive to the stability for guaranteeing furnace pressure.
In the present embodiment, drain tap component 2 includes more than two vent valves, and the bore of more than two vent valves increases one by one
Greatly.More than two vent valves are set, allow any selection and combination of the quantity of vent valve, can be met in different furnace pressure ranges
Under different exhaust velocity demands, propose high control precision, using flexible and the scope of application.
In the present embodiment, drain tap component 2 includes two vent valves, and two vent valves are respectively 21 He of the first vent valve
Second vent valve 22, the bore of the first vent valve 21 are greater than the bore of the second vent valve 22, and the first vent valve 21 is by being vented greatly
Branch pipe 23 is connected with gas exhaust piping 3, and the second vent valve 22 is connected by small exhaust branch pipe 24 with gas exhaust piping 3, big exhaust branch pipe
23 diameter is greater than the diameter of small exhaust branch pipe 24, and the communication port of big exhaust branch pipe 23 and gas exhaust piping 3 is located at small exhaust branch
Between the communication port and heat exchanger 4 of pipe 24 and gas exhaust piping 3, namely the direction that gas flowing is discharged along gas exhaust piping 3, it is big to arrange
The communication port of gas branch pipe 23 and gas exhaust piping 3 is located at communication port front of the small exhaust branch pipe 24 with gas exhaust piping 3.It deflates first
Valve 21 and the second vent valve 22 open simultaneously when being exhausted, and the communication port of big exhaust branch pipe 23 and gas exhaust piping 3 is located at float
In front of the communication port of gas branch pipe 24 and gas exhaust piping 3, so that gas is preferentially passed through big exhaust branch pipe 23 and be discharged, is conducive to improve exhaust speed
Degree, improves the sensitivity of controling of the pressure of the oven.
In the present embodiment, the diameter of big exhaust branch pipe 23 is 35~50mm, and the diameter of small exhaust branch pipe 24 is 15~30mm.
The combination of the big exhaust branch pipe 23 and small exhaust branch pipe 24 of this kind of diameter range is meeting bell-type furnace real work furnace pressure range
In the case of, it can maximumlly improve controling of the pressure of the oven precision and sensitivity.
In concrete application production process, as furnace pressure < 800Pa, the second vent valve 22 that small exhaust branch pipe 24 connects is beaten
It opens, the first vent valve 21 that big exhaust branch pipe 23 connects is closed completely, by the valve opening (0- for controlling the second vent valve 22
100%) and valve opening time realizes controling of the pressure of the oven, realizes setting pressure control to meet；As 800 < furnace pressure < 2000,
The first vent valve 21 that big exhaust branch pipe 23 connects is opened, and the second vent valve 22 that small exhaust branch pipe 24 connects is closed completely, and is led to
The valve opening (0-100%) and valve opening time of crossing the first vent valve 21 of control realize the furnace pressure control in the pressure range
System；As 2000 < furnace pressure < 4000, the first vent valve 21 that big exhaust branch pipe 23 connects is fully opened, and small exhaust branch pipe 24 connects
The second vent valve 22 connect is opened, real by the valve opening (0-100%) and valve opening time that control the second vent valve 22
The now controling of the pressure of the oven in the pressure range.
In the present embodiment, furnace pressure control device is additionally provided with exhaust main, and more than two vent valves are connected with exhaust main,
Convenient for the gas of centralized processing discharge.
Preferably, the vent valve of the present embodiment uses switch valve, at low cost.
In the present embodiment, heat exchanger 4 is shell-and-tube heat exchanger, and the tube side of shell-and-tube heat exchanger is serially connected in gas exhaust piping 3,
The shell side of shell-and-tube heat exchanger is serially connected in a cooling medium pipeline.Be conducive to increase the contact surface with cooling water in shell side in this way
Product improves heat exchange efficiency；And cooling water is conveyed from tube side, and the casing surface temperature of shell-and-tube heat exchanger can be made to be in compared with low temperature
Degree avoids Field Force from accidentally touching and cause to scald.
In the present embodiment, air exhauster 5 is set to the tube side outlet end of shell-and-tube heat exchanger, is conducive to gas in gas exhaust piping 3
Flowing, energy consumption can be saved.
In the present embodiment, the outlet side of gas exhaust piping 3 is also connected to the burner hearth of bell jar furnace body 1, makes furnace pressure control device
Have the function of adjusting temperature in burner hearth simultaneously, also can will be re-fed into burner hearth after gas extraction cooling in burner hearth, realization follows
Ring is cooling.When adjusting furnace temperature, high-temperature gas in burner hearth is extracted out by air exhauster 5 and passes through heat exchanger 4 carries out heat exchange cooling
After be again introduced into burner hearth, can be realized and cool down to burner hearth inside.Using by high-temperature gas extraction in burner hearth it is cooling after again
The mode for being sent into burner hearth cools down to burner hearth inside, does not consume process gas, can greatly save air consumption, and pass through exhaust wind
Machine 5 controls the speed that gas in gas exhaust piping 3 flows, and accurately controls the cooling air scale of construction and cooling velocity, and then realize drop
The accurate control of warm speed.
The drain tap component 2 of the present embodiment is set altogether there are two vent valve, in other embodiments, drain tap component 2
It can also part one vent valve of setting.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to
Above-described embodiment.To those of ordinary skill in the art, gained under the premise of not departing from the utility model technical concept
To modifications and variations also should be regarded as the protection scope of the utility model.
Claims (9)
1. a kind of furnace pressure control device of bell-type furnace, including bell jar furnace body (1) and drain tap component (2), it is characterised in that:
The drain tap component (2) is connected by a gas cooling component with the burner hearth of bell jar furnace body (1), the gas cooling group
Part includes gas exhaust piping (3), and the inlet end of the gas exhaust piping (3) is connected to the burner hearth of bell jar furnace body (1), the exhaust pipe
The outlet side on road (3) is connected with drain tap component (2), and the gas exhaust piping (3) is equipped with heat exchanger (4) and air exhauster
(5)。
2. furnace pressure control device according to claim 1, it is characterised in that: the drain tap component (2) includes two
The bore of the above vent valve, more than two vent valves increases one by one.
3. furnace pressure control device according to claim 2, it is characterised in that: the drain tap component (2) includes two
Vent valve, two vent valves are respectively the first vent valve (21) and the second vent valve (22), the mouth of first vent valve (21)
Diameter is greater than the bore of the second vent valve (22), and first vent valve (21) passes through big exhaust branch pipe (23) and gas exhaust piping (3)
It is connected, second vent valve (22) is connected by small exhaust branch pipe (24) with gas exhaust piping (3), the big exhaust branch pipe (23)
Diameter be greater than the diameter of small exhaust branch pipe (24), and the big exhaust branch pipe (23) and the communication port of gas exhaust piping (3) are located at
Between the small exhaust branch pipe (24) and the communication port and heat exchanger (4) of gas exhaust piping (3).
4. furnace pressure control device according to claim 3, it is characterised in that: the diameter of the big exhaust branch pipe (23) is 35
~50mm, the diameter of the small exhaust branch pipe (24) are 15~30mm.
5. furnace pressure control device according to claim 2, it is characterised in that: further include exhaust main, two or more is deflated
Valve is connected with the exhaust main.
6. furnace pressure control device according to claim 1, it is characterised in that: the drain tap component (2) is one and puts
Air valve.
7. furnace pressure control device according to claim 1, it is characterised in that: the heat exchanger (4) is shell-and-tube heat exchanger,
The tube side of the shell-and-tube heat exchanger is serially connected in the gas exhaust piping (3), and the shell side of the shell-and-tube heat exchanger is serially connected in one
In cooling medium pipeline.
8. furnace pressure control device according to claim 7, it is characterised in that: the air exhauster (5) is changed set on shell-and-tube
The tube side outlet end of hot device.
9. furnace pressure control device according to any one of claim 1 to 8, it is characterised in that: the gas exhaust piping (3)
Outlet side is also connected to the burner hearth of bell jar furnace body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058010.7U CN209416034U (en) | 2018-12-07 | 2018-12-07 | A kind of furnace pressure control device of bell-type furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822058010.7U CN209416034U (en) | 2018-12-07 | 2018-12-07 | A kind of furnace pressure control device of bell-type furnace |
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| Publication Number | Publication Date |
|---|---|
| CN209416034U true CN209416034U (en) | 2019-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822058010.7U Active CN209416034U (en) | 2018-12-07 | 2018-12-07 | A kind of furnace pressure control device of bell-type furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111057819A (en) * | 2019-12-30 | 2020-04-24 | 湖南金炉科技股份有限公司 | Circulating cooling device, heat treatment kiln and cooling method thereof |
-
2018
- 2018-12-07 CN CN201822058010.7U patent/CN209416034U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111057819A (en) * | 2019-12-30 | 2020-04-24 | 湖南金炉科技股份有限公司 | Circulating cooling device, heat treatment kiln and cooling method thereof |
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