CN203495229U - Vacuum degreasing furnace - Google Patents
Vacuum degreasing furnace Download PDFInfo
- Publication number
- CN203495229U CN203495229U CN201320522299.8U CN201320522299U CN203495229U CN 203495229 U CN203495229 U CN 203495229U CN 201320522299 U CN201320522299 U CN 201320522299U CN 203495229 U CN203495229 U CN 203495229U
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- degreasing
- vacuum
- furnace
- pipe
- annular seal
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Abstract
The utility model discloses a vacuum degreasing furnace. The vacuum degreasing furnace comprises a furnace shell, wherein a degreasing furnace is arranged in the furnace shell; a vacuum device, a circulation cooling device and a degreasing device which are connected through pipelines are arranged on the outer side of the furnace shell; the degreasing furnace is a sealed cavity of which the cross section is circular; a guide gully is formed in the inner wall of the sealed cavity; a reinforcing rib ring is hooped on the outer wall of the sealed cavity. The vacuum degreasing furnace disclosed by the utility model is simple in structure; a grease hiding dead angle in the degreasing furnace is avoided; the degreasing is performed more completely; the degreasing effect is greatly improved; meanwhile, the deformation resistance of the degreasing furnace is also improved, and the service life of the greasing furnace is prolonged; in addition, the cooling time is greatly reduced and the degreasing efficiency effect is improved by utilizing an external circulation cooling device.
Description
Technical field
The utility model relates to a kind of debinding furnace, relates in particular to a kind of vacuum degreasing stove.
Background technology
Metal injection moulding (Metal Injection Molding, be called for short MIM) be a kind of Novel powder metallurgy forming technique, can improve to greatest extent the content of metallic and in sintering process subsequently, remove bonding agent completely and make into parison densified.The process that becomes parison sintering to remove bonding agent contained in body before becomes degreasing.
In ungrease treatment, one-tenth parison is put into debinding furnace, by adding thermal decomposition, remove into the bonding agent in parison, and then will remove the one-tenth parison cooling rear taking-up fast of bonding agent.The utilization of existing vacuum degreasing stove vacuumizes or degreasing is carried out in carrier gas, and vacuum plant, cooling device, degreasing plant are set conventionally in or beyond body of heater; Existing debinding furnace cross section be square, become parison to be placed in the annular seal space of debinding furnace, become the bonding agent in parison under the effect of high temperature, to decompose generation grease (wax) and degreasing gas, grease flows in collection fat tank along annular seal space inwall, and degreasing gas emits with windstream; Because the cross section of existing debinding furnace is square, grease oozes out from become parison, the debinding furnace inwall that grease is flowed through square, can be hampered around the corner, cause grease not emit completely, degreasing is incomplete, pollute into parison, in follow-up sintering processes process, cause finished product layering, have pore, outlet defective products.
In addition, because vacuum degreasing stove is to be evacuated in stove, the external and internal pressure of debinding furnace is poor larger, although can give in stove, passes into protective gas, and keeping away unavoidable debinding furnace can deform, and has reduced the service life of debinding furnace.
Utility model content
The utility model has overcome the deficiencies in the prior art, provide a kind of simple in structure, degreasing completely, the debinding furnace of resistance to deformation.
For achieving the above object, the technical solution adopted in the utility model is: a kind of vacuum degreasing stove, comprise that inside is provided with the furnace shell of debinding furnace, described furnace shell outside is provided with vacuum plant, cooling back installation, the degreasing plant being connected by pipeline, it is characterized in that: described debinding furnace is that cross section is circular annular seal space, described annular seal space inwall is provided with guiding gully, and the outer armlet of described annular seal space has reinforcement circle.
In preferred embodiment of the utility model, further comprise between described debinding furnace and described furnace shell and being connected by support member.
In preferred embodiment of the utility model, further comprise that described guiding gully is corrugated.
In preferred embodiment of the utility model, further comprise the air inlet pipe being also provided with on described furnace shell outside with described furnace shell internal communication.
In preferred embodiment of the utility model, further comprise that described cooling back installation comprises the cooling pipe being communicated with described air inlet pipe, on described cooling pipe, be provided with successively coolant valve, blower fan, condenser.
In preferred embodiment of the utility model, further comprise that described vacuum plant comprises vacuum pipe and is successively set on vacuum valve, vavuum pump, the sliding vane rotary pump on described vacuum pipe, is connected with switch valve between described vacuum pipe and cooling pipe.
In preferred embodiment of the utility model, further comprise described degreasing plant comprise the degreasing pipeline that is communicated with described annular seal space, with the exhaust tube of described degreasing pipeline communication, described degreasing pipeline is connected with depot fat tank, described degreasing pipeline is provided with the heater to its heating, on described exhaust tube, be provided with successively trap, filter, on described exhaust tube, by extraction valve is set, be connected on the vacuum pipe between described vavuum pump and sliding vane rotary pump.
In preferred embodiment of the utility model, further comprise that described trap is provided with the exhaust tube between described filter the escape pipe being communicated with it, described escape pipe is provided with air outlet valve.
The utility model has solved the defect existing in background technology, and vacuum degreasing furnace structure of the present utility model is simple, can guarantee in debinding furnace that, without hiding fat dead angle, degreasing is more complete, has greatly improved degreasing effect; Also improve the ability of debinding furnace resistance to deformation simultaneously, extended the service life of debinding furnace; In addition, utilize outer circulation cooling device, greatly reduced cool time, improved degreasing efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the structural representation of preferred embodiment of the present utility model;
Fig. 2 is the schematic diagram of the annular seal space outer wall of debinding furnace in the utility model;
Fig. 3 is the schematic diagram in the annular seal space inwall guiding gully of debinding furnace in the utility model;
In figure: 10, furnace shell, 20, debinding furnace, 21, annular seal space, 22, guiding gully, 23, reinforcement circle, 30, vacuum plant, 31, vacuum pipe, 32, vacuum valve, 33, vavuum pump, 35, switch valve, 40, cooling back installation, 41, cooling pipe, 42, coolant valve, 43, blower fan, 44, condenser, 50, degreasing plant, 51, degreasing pipeline, 52, exhaust tube, 53, depot fat tank, 54, heater, 55, trap, 56, filter, 57, extraction valve, 60, pipeline, 70, support member, 80, air inlet pipe, 90, escape pipe, 91, air outlet valve.
The specific embodiment
In conjunction with the accompanying drawings and embodiments the utility model is described in further detail now, these accompanying drawings are the schematic diagram of simplification, basic structure of the present utility model is only described in a schematic way, so it only show the formation relevant with the utility model.
As shown in Figure 1 to Figure 3, a kind of vacuum degreasing stove, comprises that inside is provided with the furnace shell 10 of debinding furnace 20, and the cross sectional shape of furnace shell 10 can be circle, also can be squarely, specifically according to production requirement, sets; Furnace shell 10 outsides are provided with vacuum plant 30, cooling back installation 40, the degreasing plant 50 being connected by pipeline 60; Between debinding furnace 20 and furnace shell 10, by support member 70, be connected; In the utility model debinding furnace 20 for cross section be circular annular seal space 21, annular seal space 21 inwalls be provided with guiding gully 22, the outer armlet of annular seal space 21 has reinforcement circle 23; Guiding gully 22 in the utility model is corrugated.
On furnace shell 10 outsides in the utility model, be also provided with the air inlet pipe 80 with furnace shell 10 internal communication, for accessing air or nitrogen.
Cooling back installation 40 in the utility model comprises the cooling pipe 41 being communicated with air inlet pipe 80, cooling pipe 41 is connected by pipeline 60 and air inlet pipe 80, on cooling pipe 41, be provided with successively coolant valve 42, blower fan 43, condenser 44, blower fan in the utility model 43 adopts the centrifugal fan of all-sealed structure, can avoid the motor sealing of other structure blower fans and the vacuum leak that causes.
Vacuum degreasing stove of the present utility model in use, is first opened vacuum valve 32, starts vavuum pump 33, sliding vane rotary pump 34, and the annular seal space of debinding furnace 20 is vacuumized; Reach after vacuum requirement, close vacuum valve 32, close vavuum pump 33, to air inlet pipe 80, pass into air, open extraction valve 57 and air outlet valve 91, the air of usining carries out degreasing as carrier, and degreasing gas emits through escape pipe 90; After degreasing completes, close extraction valve 57, close sliding vane rotary pump 34, to air inlet pipe 80, pass into nitrogen, open switch valve 35 and coolant valve 42, start blower fan 43 and condenser 44, carry out Rapid Circulation refrigeration; Become after parison cools, from the interior taking-up of annular seal space 21 of debinding furnace 20, enter next sintering circuit.Filter 56 is set on exhaust tube 52, upper, while once vacuumizing, the front degreasing gas filtration that once remains in annular seal space 21 is fallen, guarantee the vacuum that can reach capacity.
The beneficial effects of the utility model are:
1, to be set to cross section be circular annular seal space to debinding furnace, in skimming processes, the bonding agent (or grease) oozing out from become parison is along the annular seal space inwall of circular arc, flow to depot fat tank, guarantee in debinding furnace without hiding fat dead angle, the annular seal space inwall of circular arc has avoided the flow through corner of traditional square inwall of bonding agent to be hampered, and produces and is detained, and pollute into parison;
2, undulatory guiding gully is set further on the inwall of annular seal space, the flowing of more convenient fat;
3, due to before degreasing first to vacuumizing in annular seal space, can cause the external and internal pressure of annular seal space poor larger, for avoiding annular seal space distortion, at annular seal space outer wall lock ring reinforcement circle, prevent annular seal space distortion, and affect debinding furnace performance, extended the service life of debinding furnace;
4, outer circulation cooling device of the present utility model, is by pour nitrogen in furnace shell, and the heat energy that finally leaves of condenser, the blower fan through furnace shell outside, returns in furnace shell, then enters next circulation, so repeatedly can realize fast cooling in furnace shell;
5, on degreasing pipeline, heater is set, is convenient to flowing and cleaning of fat, make degreasing follow collection fat more effective.
Above foundation desirable embodiment of the present utility model is enlightenment, and by above-mentioned description, related personnel can, within not departing from the scope of this utility model technological thought, carry out various change and modification completely.The technical scope of this utility model is not limited to the content on description, must determine technical scope according to claim scope.
Claims (8)
1. a vacuum degreasing stove, comprise that inside is provided with the furnace shell of debinding furnace, described furnace shell outside is provided with vacuum plant, cooling back installation, the degreasing plant being connected by pipeline, it is characterized in that: described debinding furnace is that cross section is circular annular seal space, described annular seal space inwall is provided with guiding gully, and the outer armlet of described annular seal space has reinforcement circle.
2. a kind of vacuum degreasing stove according to claim 1, is characterized in that: between described debinding furnace and described furnace shell, by support member, be connected.
3. a kind of vacuum degreasing stove according to claim 2, is characterized in that: described guiding gully is corrugated.
4. a kind of vacuum degreasing stove according to claim 1, is characterized in that: on described furnace shell outside, be also provided with the air inlet pipe with described furnace shell internal communication.
5. a kind of vacuum degreasing stove according to claim 4, is characterized in that: described cooling back installation comprises the cooling pipe being communicated with described air inlet pipe, is provided with successively coolant valve, blower fan, condenser on described cooling pipe.
6. a kind of vacuum degreasing stove according to claim 5, it is characterized in that: described vacuum plant comprises vacuum pipe and is successively set on vacuum valve, vavuum pump, the sliding vane rotary pump on described vacuum pipe, between described vacuum pipe and cooling pipe, is connected with switch valve.
7. a kind of vacuum degreasing stove according to claim 6, it is characterized in that: described degreasing plant comprise the degreasing pipeline that is communicated with described annular seal space, with the exhaust tube of described degreasing pipeline communication, described degreasing pipeline is connected with depot fat tank, described degreasing pipeline is provided with the heater to its heating, on described exhaust tube, be provided with successively trap, filter, on described exhaust tube, by extraction valve is set, be connected on the vacuum pipe between described vavuum pump and sliding vane rotary pump.
8. a kind of vacuum degreasing stove according to claim 7, is characterized in that: described trap is provided with the exhaust tube between described filter the escape pipe being communicated with it, and described escape pipe is provided with air outlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320522299.8U CN203495229U (en) | 2013-08-26 | 2013-08-26 | Vacuum degreasing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320522299.8U CN203495229U (en) | 2013-08-26 | 2013-08-26 | Vacuum degreasing furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203495229U true CN203495229U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320522299.8U Expired - Fee Related CN203495229U (en) | 2013-08-26 | 2013-08-26 | Vacuum degreasing furnace |
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| CN (1) | CN203495229U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464757A (en) * | 2013-08-26 | 2013-12-25 | 苏州米莫金属科技有限公司 | Vacuum degreasing furnace |
-
2013
- 2013-08-26 CN CN201320522299.8U patent/CN203495229U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464757A (en) * | 2013-08-26 | 2013-12-25 | 苏州米莫金属科技有限公司 | Vacuum degreasing furnace |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20160826 |