CN207688647U - A kind of vacuum furnace - Google Patents
A kind of vacuum furnace Download PDFInfo
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- CN207688647U CN207688647U CN201721845671.3U CN201721845671U CN207688647U CN 207688647 U CN207688647 U CN 207688647U CN 201721845671 U CN201721845671 U CN 201721845671U CN 207688647 U CN207688647 U CN 207688647U
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- burner hearth
- bell
- stove seat
- hole
- vacuum furnace
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Abstract
The utility model is related to dental equipment fields, disclose a kind of vacuum furnace, including bell, stove seat and heating device, bell and stove seat are detachably connected, and in connection around heat-insulated burner hearth is formed, bell is equipped with the through-hole of connection burner hearth, and stove seat is equipped with the aspirating hole of connection burner hearth, the junction of bell and stove seat is equipped with the first sealing ring, and heating device is for heating burner hearth.The utility model can take the air in burner hearth away when in use so that be in vacuum state in burner hearth, on the one hand raw material can be made to be heated under oxygen-free environment, raw material is avoided oxidative phenomena occur；On the other hand, pumping rear hearth is in negative pressure state, and bell is tightly pressed against under the action of external atmosphere pressure on stove seat, so as to save additional pressing device, helps to simplify structure, reduces cost.
Description
Technical field
The utility model is related to automation equipment fields, are specifically related to dental equipment field, add more particularly, to one kind
Hot stove.
Background technology
Casting porcelain stove is a kind of equipment of manufacture casting porcelain tooth, and raw material are pushed into mold by operation principle using a jumper bar
In cavity, then to raw material carry out hot briquetting, raw material during heating be easy oxidation, for avoid material oxidation at
Adverse effect caused by product quality, existing heating furnace are typically that protective atmosphere is filled in burner hearth, and such mode needs to consume
Protective gas increases production cost；Further, since being positive pressure in burner hearth, therefore also need to be arranged additional structure to compress stove
Lid, leads to the complication of structure.
Utility model content
For overcome the deficiencies in the prior art, the utility model provides a kind of vacuum furnace, for solving the prior art
The problem of needing to prevent from aoxidizing using protective atmosphere, and needing additional setting compressing structure.
Technical solution adopted by the utility model to solve its technical problems is：
A kind of vacuum furnace, including bell, stove seat and heating device, bell and stove seat are detachably connected, and even
Around heat-insulated burner hearth is formed when connecing, bell is equipped with the through-hole of connection burner hearth, and stove seat is equipped with the aspirating hole of connection burner hearth, stove
The junction of lid and stove seat is equipped with the first sealing ring, and heating device is for heating burner hearth.
It is further improved mode as said program, further includes collet, collet is plugged in through-hole, and and through-hole
Connection.
It is further improved mode as said program, further includes the second sealing ring being arranged in sleeve's inner wall.
As the mode that is further improved of said program, bell includes shell and the thermal insulation layer that is connected on outer casing inner wall,
Thermal insulation layer is arranged around burner hearth, and through-hole runs through shell and thermal insulation layer.
As the mode that is further improved of said program, heating device is the helix tube being arranged on thermal insulation layer inner wall.
As the mode that is further improved of said program, sealing plate is connected with towards one end of stove seat on shell, sealing plate with every
The mounting base for accepting thermal insulation layer is provided between thermosphere.
As the mode that is further improved of said program, the inner wall of shell is equipped with limited post, thermal insulation layer and mounting base
Outer wall is equipped with limiting slot, and limited post is plugged in limiting slot.
It is further improved mode as said program, further includes vacuum-ness detecting device, is additionally provided on stove seat and burner hearth
The vacuum degree measurement hole of connection, vacuum degree measurement hole are connected to vacuum-ness detecting device.
As the mode that is further improved of said program, heating device is infrared heating pipe.
As the mode that is further improved of said program, the inner surface of stove seat is provided with several gas channels, gas channels
It is connected to aspirating hole.
The utility model has the beneficial effects that：
The utility model can take the air in burner hearth away when in use so that vacuum state is in burner hearth, on the one hand
Raw material can be made to be heated under oxygen-free environment, raw material is avoided oxidative phenomena occur；On the other hand, pumping rear hearth is in
Negative pressure state, bell are tightly pressed against under the action of external atmosphere pressure on stove seat, so as to save additional pressing device, are had
Help simplify structure, reduces cost.
Description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the stereoscopic schematic diagram for casting porcelain stove one embodiment；
Fig. 2 is the diagrammatic cross-section for casting porcelain stove one embodiment；
Fig. 3 is the stereoscopic schematic diagram of pedestal one embodiment.
Specific implementation mode
The technique effect of the design of the utility model, concrete structure and generation is carried out below with reference to embodiment and attached drawing
Clear, complete description, to be completely understood by the purpose of this utility model, scheme and effect.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
It should be noted that unless otherwise specified, when a certain feature is referred to as " fixing ", " connection " is in another feature,
It can directly fix, be connected in another feature, can also fix, be connected in another feature indirectly.In addition, this
The descriptions such as the up, down, left, right, before and after used in utility model are only relative to each composition portion of the utility model in attached drawing
For the mutual alignment relation divided.
In addition, unless otherwise defined, the technology of all of technologies and scientific terms used here by the article and the art
The normally understood meaning of personnel is identical.Term used in the description is intended merely to description specific embodiment herein, without
It is to limit the utility model.Term " and or " used herein includes appointing for one or more relevant Listed Items
The combination of meaning.
Referring to Fig.1, Fig. 2 respectively illustrates the stereoscopic schematic diagram and diagrammatic cross-section of the utility model one embodiment.Such as
Shown in figure, vacuum furnace includes bell 100, stove seat 200 and heating device 300.
Bell 100 preferably includes shell 110, thermal insulation layer 120, sealing plate 130 and mounting base 140.Wherein shell 110 with it is heat-insulated
Layer 120 is the primary structure of bell 100, and for constructing a heat-insulated cavity, which cooperatively forms with stove seat 200
Burner hearth.
Shell 110 is whole cylindrical comprising roof and the side wall around top wall circumference setting, the roof of shell 110
On be provided with through-hole, which is used to install external jumper bar, and jumper bar can be stretched into from through-hole in burner hearth, to the raw material in burner hearth
Carry out punching press.It is in sealing contact with the hole wall of through-hole during jumper bar moves in through-hole.
The shape of thermal insulation layer 120 is roughly the same with shell 110, and shell is mounted on by sealing plate 130 and mounting base 140
On 110 inner wall, specifically, sealing plate 130 is fixed by screws in the bottom end (namely towards one end of stove seat) of shell 110,
The through-hole that burner hearth is stretched into for mold and raw material is provided on sealing plate 130.The top of sealing plate 130 is equipped with mounting base 140, heat-insulated
Layer 120 is then placed on the top of mounting base 140.Preferably, sealing plate 130 is made with mounting base 140 of heat-barrier material, to reduce
Heat scatters and disappears.
Herein referred thermal insulation layer or heat-barrier material, is well known technology, and the utility model is not detailed this.
The utility model preferably further includes collet 150, and collet 150 is plugged in through-hole, and is connected to through-hole, heat-insulated
The inner wall of set 150 is equipped with the second sealing ring 160.Above-mentioned jumper bar is plugged in collet 150, and the second sealing ring 160 holds jumper bar tightly
To realize sealing.Collet 150 is used to completely cut off the heat in burner hearth, avoids the second sealing ring 160 by thermal failure.Certainly, second
Sealing ring can also be arranged on jumper bar.
In addition, being convexly equipped with axial limited post on the inner wall of shell 110, on the outer wall of thermal insulation layer 120 and mounting base 140 then
It is correspondingly provided with axial limiting slot, limited post is plugged in limiting slot, to limit the rotation of thermal insulation layer 120 and mounting base 140.
Heating device 300 is for heating burner hearth, the infrared heating being preferably arranged on 120 inner wall of thermal insulation layer
Pipe, infrared heating pipe by heating by infrared radiation, can eliminate because in vacuum environment heat transfer medium reduce due to heat transfer efficiency
Caused by adversely affect.
Stove seat 200 preferably includes pedestal 210 and mounting platform 220, and wherein mounting platform is for placing mold 400, pedestal
210 extension is equipped with a circle groove, and the first sealing ring 230 is provided in groove.Bell 100 and stove seat 200 are detachably connected,
And the first sealing ring 230 is compressed in connection, in conjunction with the cooperation of jumper bar and the first sealing ring 160, it is collectively formed heat-insulated and seals
Burner hearth.
Pedestal 210 is equipped with the aspirating hole (not shown) of connection burner hearth, and aspirating hole passes through connector 240 and external pumping
Gas equipment connects, in use, the air in burner hearth can be taken away by air-extractor so that vacuum state is in burner hearth, such as
This, on the one hand can make raw material be heated under oxygen-free environment, raw material is avoided oxidative phenomena occur；On the other hand, it is evacuated
Rear hearth is in negative pressure state, and bell 100 is tightly pressed against under the action of external atmosphere pressure on stove seat 200, so as to save
Additional pressing device helps to simplify structure, reduces cost.
The vacuum degree measurement hole (not shown) being connected to burner hearth, vacuum degree measurement hole phase are preferably additionally provided on pedestal 210
To aspirating hole independence, vacuum degree measurement hole is connected to vacuum-ness detecting device, in detection flake hearth-tapping that can be interference-free
Vacuum degree.
In addition, the aspirating hole in the utility model is arranged in the bottom of pedestal 210, in order to increase gas exchanges inside and outside burner hearth
Speed be additionally provided with gas channels 211 on pedestal 210, specifically, gas channels 211 are located at the interior table of pedestal 210 with reference to Fig. 3
It on face, along the radial distribution of pedestal 210, and extends on the side wall of pedestal 210, aspirating hole 212 is located at gas channels 211
Bottom.
It is illustrating for progress to be implemented to the preferable of the utility model, but the invention is not limited to the reality above
Example is applied, those skilled in the art can also make various equivalent variations without departing from the spirit of the present invention
Or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (9)
1. a kind of vacuum furnace, which is characterized in that including bell, stove seat and heating device, the bell and stove seat are detachable
Ground connects, and in connection around heat-insulated burner hearth is formed, the bell is equipped with the through-hole for being connected to the burner hearth, the stove seat
It is equipped with the aspirating hole for being connected to the burner hearth, the junction of the bell and stove seat is equipped with the first sealing ring, the heating device
For being heated to the burner hearth.
2. vacuum furnace according to claim 1, which is characterized in that further include collet, the collet is plugged on
In the through-hole, and it is connected to the through-hole.
3. vacuum furnace according to claim 2, which is characterized in that further include being arranged in the sleeve's inner wall
Second sealing ring.
4. vacuum furnace according to any one of claim 1 to 3, which is characterized in that the bell include shell with
The thermal insulation layer being connected on the outer casing inner wall, the thermal insulation layer are arranged around the burner hearth, and the through-hole runs through the shell
With thermal insulation layer.
5. vacuum furnace according to claim 4, which is characterized in that the heating device is to be arranged in the thermal insulation layer
Infrared heating pipe on inner wall.
6. vacuum furnace according to claim 4, which is characterized in that connect towards one end of the stove seat on the shell
It is connected to sealing plate, the mounting base for accepting the thermal insulation layer is provided between the sealing plate and the thermal insulation layer.
7. vacuum furnace according to claim 6, which is characterized in that the inner wall of the shell is equipped with limited post, institute
The outer wall for stating thermal insulation layer and mounting base is equipped with limiting slot, and the limited post is plugged in the limiting slot.
8. vacuum furnace according to any one of claim 1 to 3, which is characterized in that further include vacuum degree measurement dress
It sets, the vacuum degree measurement hole being connected to the burner hearth is additionally provided on the stove seat, the vacuum degree measurement hole is connected to the vacuum
Spend detection device.
9. vacuum furnace according to any one of claim 1 to 3, which is characterized in that the inner surface of the stove seat is set
Several gas channels are equipped with, the gas channels are connected to the aspirating hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721845671.3U CN207688647U (en) | 2017-12-26 | 2017-12-26 | A kind of vacuum furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721845671.3U CN207688647U (en) | 2017-12-26 | 2017-12-26 | A kind of vacuum furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207688647U true CN207688647U (en) | 2018-08-03 |
Family
ID=62995861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721845671.3U Active CN207688647U (en) | 2017-12-26 | 2017-12-26 | A kind of vacuum furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207688647U (en) |
-
2017
- 2017-12-26 CN CN201721845671.3U patent/CN207688647U/en active Active
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