CN203197247U - Gas pipe structure of dewaxing sintering device - Google Patents
Gas pipe structure of dewaxing sintering device Download PDFInfo
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- CN203197247U CN203197247U CN 201320021448 CN201320021448U CN203197247U CN 203197247 U CN203197247 U CN 203197247U CN 201320021448 CN201320021448 CN 201320021448 CN 201320021448 U CN201320021448 U CN 201320021448U CN 203197247 U CN203197247 U CN 203197247U
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- Prior art keywords
- dewaxing
- valve
- sintered pipes
- sintering
- gas
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Abstract
The utility model discloses a gas pipe structure of a dewaxing sintering device. The gas pipe structure comprises an aerating pipe used for delivering gas into a vacuum furnace. A heating inner container is arranged in the vacuum furnace, the first end of the aerating pipe is arranged on the outside of the vacuum furnace, and the second end of the aerating pipe is inserted into the heating inner container. The aerating pipe led into the heating inner container is adopted, carrier gas dewaxing and atmosphere (under coarse vacuum) sintering can be conducted, waste gas in the furnace can be effectively discharged, and a selective sintering process can be conducted.
Description
Technical field
The utility model relates to the power metallurgy equipment field, is specifically related to the tracheae structure of dewaxing and sintering equipment.
Background technology
Existing metal injection molded powder metallurgical technique generally comprises: batch mixing-injection moulding-dewaxing-sintering-post processing.Sintering can make the fine and close goods with certain tissue and respective performances that become of blank dewaxing, the contraction of porous, sintering process has very big even decisive influence to metallographic structure and the performance of end article, and the dewaxing technique before the sintering is one important procedure that guarantees sintering quality.
After the operation that dewaxes specially together, the binding agent that also has fraction in the goods, removing with sintering circuit of this a fraction of binding agent takes place in same vacuum drying oven, and the tracheae structure of dewaxing and sintering equipment comprises sintering exhaust outlet, the sintered pipes of being located at vacuum furnace top, the dewaxing guiding tube of being located at vacuum furnace bottom, dewaxing pipe and vavuum pump at present.Sintered pipes one end is communicated with the sintering exhaust outlet and the other end is communicated with vavuum pump; Dewaxing Guan Yiduan connects the dewaxing guiding tube and the other end is communicated with vavuum pump.Under the effect that vavuum pump vacuumizes, the air-flow in the vacuum drying oven is discharged to outside the vacuum drying oven by sintered pipes and vavuum pump; Wax steam in the heating inner bag of vacuum drying oven is discharged in the collection wax jar with the air-flow by dewaxing guiding tube, dewaxing pipe and vavuum pump simultaneously.Adopt this structure to have following shortcoming:
1, the tracheae structure of existing dewaxing and sintering equipment does not have the gas ducting that directly leads in the heating inner bag, and carrier gas dewaxing and atmosphere (under low vacuum) sintering can not be arranged;
2, when vacuum drying oven needed higher vacuum, the vavuum pump that power is low can't satisfy the demand of vacuumizing; If adopt the high vavuum pump of power, when the lower vacuum of needs, the vacuum that power is high can cause the unnecessary waste of resource, has increased production cost virtually; Vavuum pump can't satisfy the needs of different vacuums in the vacuum drying oven.
The utility model content
The purpose of this utility model has been to disclose the tracheae structure of dewaxing and sintering equipment, solved the problem that vavuum pump can't satisfy the needs of different vacuums in the vacuum drying oven.
For achieving the above object, the utility model adopts following technical scheme:
The tracheae structure of dewaxing and sintering equipment comprises for the gas tube to vacuum drying oven delivered inside gas; Be provided with the heating inner bag in the vacuum drying oven, first end of gas tube is located at outside the vacuum drying oven and second end inserts in the heating inner bag.
Further, described gas is high pure nitrogen or argon gas, and high pure nitrogen or argon gas refer to gas concentration and reach 99.99% nitrogen or argon gas.
Further, described first end is provided with for the gas-charging connection that connects gas tank.
Further, also comprise sintering exhaust outlet, slide machine pump, lobe pump, first sintered pipes of being located at described vacuum furnace top and first valve that is used for the connection of control first sintered pipes or closure; One end of first sintered pipes is connected with the sintering exhaust outlet, and the other end of first sintered pipes is connected with the slide machine pump; Lobe pump is located on first sintered pipes, and lobe pump is between sintering exhaust outlet and slide machine pump; First valve is located on first sintered pipes, and first valve is between lobe pump and sintering exhaust outlet.
Further, described first end of described gas tube enters in the described vacuum drying oven along described sintering exhaust outlet.
Further, also comprise second sintered pipes with described lobe pump parallel connection; One end of this second sintered pipes connects described sintering exhaust outlet by second valve, and the other end of second sintered pipes connects described slide machine pump by the 3rd valve; Simultaneously, described first sintered pipes connects the slide machine pump by the 3rd valve.
Further, also comprise dewaxing guiding tube and dewaxing pipe; The dewaxing guiding tube is located at the bottom of described vacuum drying oven and is communicated with described heating inner bag; One end of dewaxing pipe connects the dewaxing guiding tube by the 4th valve, and the other end of dewaxing pipe connects described second sintered pipes; This moment, second sintered pipes was provided with the 5th valve between described second valve and described the 3rd valve, and the link position of dewaxing pipe and second sintered pipes is located between second valve and the 5th valve.
Further, the internal diameter of described second sintered pipes, described dewaxing guiding tube and described dewaxing pipe is all greater than 80mm.
Further, the outer wall of described dewaxing guiding tube and/or described dewaxing pipe is arranged with muff.
Further, described first sintered pipes, described second sintered pipes, described dewaxing guiding tube and described dewaxing pipe are the pipeline that stainless steel is made.
Compared with prior art, the beneficial effects of the utility model:
1, the utility model adopts the gas tube that passes to the heating inner bag, and carrier gas dewaxing and atmosphere (under low vacuum) sintering can be arranged, and effectively discharges waste gas and the selectable sintering process of execution in the stove;
2, adopt the structure of slide machine pump and lobe pump series connection, select the slide machine pump to work independently according to required vacuum, or slide machine pump and the lobe pump mode of working simultaneously, can efficent use of resources, reduced production cost;
3, the structure of second sintered pipes of employing and lobe pump parallel connection, when atmosphere (low pressure) high temperature sintering, lobe pump need not start, air-flow passes through from second sintered pipes, the reliability and stability that air-flow is discharged effect are guaranteed, and unlikely lobe pump and first sintered pipes of influencing, the service life of prolongation lobe pump;
4, the dewaxing tracheae structure in employing the utility model, the energy efficent use of resources has reduced production cost, and when the slide machine pump works independently, air-flow avoids wax steam to pollute lobe pump because of condensation without lobe pump but directly to the slide machine pump, prolongs the service life of lobe pump 5;
5, the internal diameter of second sintered pipes 8, dewaxing guiding tube 11 and dewaxing pipe 12 can prevent polluted product and vacuum drying oven inner bag greater than 80mm reasonably discharging air-flow in the time at the temperature rise period vacuum drying oven;
6, pipeline adopts stainless steel, prevents corrosion, long service life.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparent, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the schematic diagram of the tracheae structure embodiment of the utility model dewaxing and sintering equipment;
Among the figure, the 1-vacuum drying oven; 101-heats inner bag; The 2-gas tube; 21-first end; 22-second end; The 23-gas-charging connection; 3-sintering exhaust outlet; 4-slide machine pump; The 5-lobe pump; 6-first sintered pipes; 7-first valve; 8-second sintered pipes; 9-second valve; 10-the 3rd valve; The 11-guiding tube that dewaxes; The 12-pipe that dewaxes; 13-the 4th valve; 14-the 5th valve.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.
The tracheae structure of dewaxing and sintering equipment comprises for the gas tube to vacuum drying oven delivered inside gas; Be provided with the heating inner bag in the vacuum drying oven, first end of gas tube is located at outside the vacuum drying oven and second end inserts in the heating inner bag.
The tracheae structure of embodiment dewaxing and sintering equipment comprises for the gas tube 2 to vacuum drying oven 1 delivered inside gas as shown in Figure 1; Be provided with heating inner bag 101 in the vacuum drying oven 1, first end 21 of gas tube 2 is located at outside the vacuum drying oven and second end 22 inserts in the heating inner bags 101.Gas is high pure nitrogen or argon gas.First end 21 is provided with for the gas-charging connection 23 that connects nitrogen gas tank or argon gas gas tank.
Present embodiment also comprises sintering exhaust outlet 3, slide machine pump 4, lobe pump 5, first sintered pipes 6 and first valve 7 of being located at vacuum drying oven 1 top; First sintered pipes, 6 one ends are connected with sintering exhaust outlet 3, and the other end is connected with slide machine pump 4.Lobe pump 5 is located on first sintered pipes 6, and between sintering exhaust outlet 3 and slide machine pump 4.First valve 7 is located on first sintered pipes 6, and between lobe pump 5 and sintering exhaust outlet 3, first valve 7 is used for connection or the closure of control first sintered pipes 6.
When vacuum drying oven 1 needed higher vacuum, first valve 7 was opened, and slide machine pump 4 and lobe pump 5 are worked simultaneously, and air-flow is discharged along first sintered pipes 6 in the vacuum drying oven 1; When vacuum drying oven 1 needed lower vacuum, first valve 7 was opened, and only needed 4 work of slide machine pump, and air-flow is discharged along first sintered pipes 6 in the vacuum drying oven.Adopt the structure of slide machine pump 4 and lobe pump 5 series connection, efficent use of resources has reduced production cost.
In the present embodiment, when having only 4 work of slide machine pump, the flowing velocity of air-flow in first sintered pipes 6 is slower, when low pressure (atmosphere sintering) is descended high temperature sintering, lobe pump 5 can not start, and air-flow must be by lobe pump 5, and this moment, air-flow was discharged and lobe pump 5 itself can cause harmful effect, influenced the service life of lobe pump 5.As to further improvement of this embodiment, present embodiment comprises that also pipe range with second sintered pipes, 8, the second sintered pipes 8 of lobe pump 5 parallel connections is less than first sintered pipes 6; Slide machine pump 4 directly is connected by second sintered pipes 8 with sintering exhaust outlet 3.One end of second sintered pipes 8 connects sintering exhaust outlet 3, the second sintered pipes 8 by second valve 9 the other end connects slide machine pump 4 by the 3rd valve 10.Simultaneously, an end of first sintered pipes 6 connects the other end of sintering exhaust outlet 3, the first sintered pipes 6 by the 3rd valve 10 connection slide machine pumps 4 by first valve 7.When having only 4 work of slide machine pump, second valve 9 and the 3rd valve 10 are opened, first valve, 7 closures, 1 air-flow is discharged to outside the vacuum drying oven by sintering exhaust outlet 3, second valve 9, the 3rd valve 10 and slide machine pump 4 successively along second sintered pipes 8 in the vacuum drying oven.Because air-flow is without lobe pump 5, directly second sintered pipes 8 through increasing avoids polluting first sintered pipes 6 and lobe pump 5 generation harmful effects to slide machine pump 4, prolongs the service life of lobe pump 5.
As the further improvement again to present embodiment, present embodiment also comprises dewaxing guiding tube 11 and dewaxing pipe 12.Dewaxing guiding tube 11 is located at vacuum furnace bottom and is communicated with heating inner bag 101; Dewaxing pipe 12 1 ends connect dewaxing guiding tube 11 by the 4th valve 13, and dewaxing pipe 12 other ends connect second sintered pipes 8; This moment, second sintered pipes 8 was provided with the 5th valve 14 between second valve 9 and the 3rd valve 10, and the link position of dewaxing pipe 12 and second sintered pipes 8 is located between second valve 9 and the 5th valve 14.The operation principle of present embodiment this moment of explanation now:
A, when vacuum drying oven 1 needs higher vacuum to carry out sintering, slide machine pump 4 and lobe pump 5 are worked simultaneously, first valve 7 and the 3rd valve 10 are opened second valve 9, the 4th valve 13 and the 5th valve 14 closures; Sintering air-flow in the vacuum drying oven 1 is discharged through oversintering exhaust outlet 3, first valve 7, lobe pump 5, the 3rd valve 10 and slide machine pump 4 successively along first sintered pipes 6 at this moment.
B, when vacuum drying oven 1 needs lower vacuum to carry out sintering (low pressure, atmosphere sintering), only need 4 work of a slide machine pump, lobe pump 5 is in resting state, first valve 7 is closed, and second valve 9, the 3rd valve 10 and the 5th valve 14 are opened, and the 4th valve 13 is closed; Sintering air-flow in the vacuum drying oven 1 is discharged through oversintering exhaust outlet 3, second valve 9, the 5th valve 14, the 3rd valve 10 and slide machine pump 4 successively at this moment.
C, when vacuum drying oven carries out low temperature carrier when dewaxing arranged, the wax steam in the heating inner bag 101 is discharged in the collection wax jar with the air-flow through dewaxing guiding tube 11, the 4th valve 13, dewaxing pipe the 12, the 5th valve 14, the 3rd valve 10 and slide machine pump 4 successively.
Dewaxing tracheae structure in the utility model, the energy efficent use of resources has reduced production cost, and when the slide machine pump works independently, wax steam avoids wax steam to pollute lobe pump 5 because of condensation without lobe pump 5 but directly to slide machine pump 4, prolongs the service life of lobe pump 5.
In the present embodiment, the pipeline that first sintered pipes 6, second sintered pipes 8, dewaxing guiding tube 11 and dewaxing pipe 12 are made for stainless steel; The internal diameter of second sintered pipes 8, dewaxing guiding tube 11 and dewaxing pipe 12 further prevents wax steam cooling blocking pipe all greater than 80mm; The outer wall of dewaxing guiding tube 11 and/or dewaxing pipe 12 is arranged with the muff (not shown), prevents wax steam cooling blocking pipe.
Other structure of the tracheae structure of present embodiment dewaxing and sintering equipment is referring to prior art.
The utility model is not limited to above-mentioned embodiment, if various changes of the present utility model or modification are not broken away from spirit and scope of the present utility model, if these are changed and modification belongs within claim of the present utility model and the equivalent technologies scope, then the utility model also is intended to comprise these changes and modification.
Claims (10)
1. the tracheae structure of dewaxing and sintering equipment is characterized in that: comprise for the gas tube to vacuum drying oven delivered inside gas; Be provided with the heating inner bag in the vacuum drying oven, first end of gas tube is located at outside the vacuum drying oven and second end inserts in the heating inner bag.
2. the tracheae structure of dewaxing and sintering equipment according to claim 1, it is characterized in that: described gas is high pure nitrogen or argon gas.
3. the tracheae structure of dewaxing and sintering equipment according to claim 1, it is characterized in that: described first end is provided with for the gas-charging connection that connects gas tank.
4. the tracheae structure of dewaxing and sintering equipment according to claim 1 is characterized in that: also comprise sintering exhaust outlet, slide machine pump, lobe pump, first sintered pipes of being located at described vacuum furnace top and be used for control first sintered pipes being communicated with or the first closed valve; One end of first sintered pipes is connected with the sintering exhaust outlet, and the other end of first sintered pipes is connected with the slide machine pump; Lobe pump is located on first sintered pipes, and lobe pump is between sintering exhaust outlet and slide machine pump; First valve is located on first sintered pipes, and first valve is between lobe pump and sintering exhaust outlet.
5. as the tracheae structure of dewaxing and sintering equipment as described in the claim 4, it is characterized in that: described first end of described gas tube enters in the described vacuum drying oven along described sintering exhaust outlet.
6. as the tracheae structure of dewaxing and sintering equipment as described in the claim 4, it is characterized in that: also comprise second sintered pipes with described lobe pump parallel connection; One end of this second sintered pipes connects described sintering exhaust outlet by second valve, and the other end of second sintered pipes connects described slide machine pump by the 3rd valve; Simultaneously, described first sintered pipes connects the slide machine pump by the 3rd valve.
7. as the tracheae structure of dewaxing and sintering equipment as described in the claim 4, it is characterized in that: also comprise dewaxing guiding tube and dewaxing pipe; The dewaxing guiding tube is located at the bottom of described vacuum drying oven and is communicated with described heating inner bag; One end of dewaxing pipe connects the dewaxing guiding tube by the 4th valve, and the other end of dewaxing pipe connects described second sintered pipes; This moment, second sintered pipes was provided with the 5th valve between described second valve and described the 3rd valve, and the link position of dewaxing pipe and second sintered pipes is located between second valve and the 5th valve.
8. as the tracheae structure of dewaxing and sintering equipment as described in the claim 7, it is characterized in that: the internal diameter of described second sintered pipes, described dewaxing guiding tube and described dewaxing pipe is all greater than 80mm.
9. as the tracheae structure of dewaxing and sintering equipment as described in the claim 7, it is characterized in that: the outer wall of described dewaxing guiding tube and/or described dewaxing pipe is arranged with muff.
10. as the tracheae structure of dewaxing and sintering equipment as described in the claim 7, it is characterized in that: described first sintered pipes, described second sintered pipes, described dewaxing guiding tube and described dewaxing pipe are the pipeline that stainless steel is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021448 CN203197247U (en) | 2013-01-16 | 2013-01-16 | Gas pipe structure of dewaxing sintering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320021448 CN203197247U (en) | 2013-01-16 | 2013-01-16 | Gas pipe structure of dewaxing sintering device |
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| Publication Number | Publication Date |
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| CN203197247U true CN203197247U (en) | 2013-09-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320021448 Expired - Lifetime CN203197247U (en) | 2013-01-16 | 2013-01-16 | Gas pipe structure of dewaxing sintering device |
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| CN (1) | CN203197247U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556403A (en) * | 2017-09-26 | 2019-04-02 | 自贡兆强密封制品实业有限公司 | Dewax degumming sintering integrated furnace |
-
2013
- 2013-01-16 CN CN 201320021448 patent/CN203197247U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556403A (en) * | 2017-09-26 | 2019-04-02 | 自贡兆强密封制品实业有限公司 | Dewax degumming sintering integrated furnace |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130918 |