CN201361701Y - Exhaust tube for blind hole cast negative pressure casting - Google Patents
Exhaust tube for blind hole cast negative pressure casting Download PDFInfo
- Publication number
- CN201361701Y CN201361701Y CNU200920036131XU CN200920036131U CN201361701Y CN 201361701 Y CN201361701 Y CN 201361701Y CN U200920036131X U CNU200920036131X U CN U200920036131XU CN 200920036131 U CN200920036131 U CN 200920036131U CN 201361701 Y CN201361701 Y CN 201361701Y
- Authority
- CN
- China
- Prior art keywords
- exhaust tube
- steel pipe
- blind hole
- connecting screw
- metallic hose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an exhaust tube for blind hole cast negative pressure casting, which comprises an exhaust tube, a connecting screw bolt is mounted at one end of the exhaust tube, a metallic hose with one sealed end is sleeved and mounted on the connecting screw bolt, a steel pipe is sleeved and mounted on the outer side of the metallic hose, the steel pipe is fixed on the connecting screw bolt, and a plurality of holes are uniformly distributed on the steel pipe. By adopting the metallic hose to replace the stainless steel wire cloth, the gap of the metallic hose is used to realize the aspiration, because of the small size of the gap thereof, the effect thereof is better than that of the stainless steel wire cloth, and the metallic hose is arranged inside the steel pipe and is very difficult to be damaged by burning, therefore the safety of the operation of the vacuum pump is improved to great degree, the service life of the exhaust tube is substantially prolonged and the finished product ratio of the blind hole cast is increased.
Description
Technical field:
The utility model relates to a kind of foundry engieering, relates in particular to a kind of negative pressure casting technology of blind hole foundry goods.
Technical background:
The blind hole foundry goods adopts the method for lost foam casting to produce as perforating head etc., and in order to prevent subsiding of core, pre-buried exhaust tube in core usually is to improve the vacuum in the core in casting process.At present, the most exhaust tube of casting producer's employing is one section steel pipe, has equally distributed hole on steel pipe, sucks from the hole in order to prevent sand, influences the safe handling of vavuum pump, is tied with stainless steel mesh cloth in the outside of steel pipe.Adopt this exhaust tube to have following drawback in actual production process: because the screen cloth non-refractory can burn out in casting process usually, serious meeting causes foundry goods to scrap on the one hand; On the other hand because stainless (steel) wire is furnished with certain rigidity, in when binding difficulty, as bundle badly, sand is inhaled in the exhaust tube.
The utility model content:
The utility model purpose is to provide a kind of blind hole foundry goods negative pressure casting exhaust tube of new structure, adopts metal hose to replace stainless steel mesh cloth, has improved the security of vavuum pump operation and the service life of exhaust tube greatly.
The utility model is achieved in that a kind of blind hole foundry goods negative pressure casting exhaust tube, comprise pump-line, it is characterized in that: the end at described pump-line is equipped with connecting screw rod, on described connecting screw rod, be set with the metal hose of end sealing, the outside at described metal hose is set with steel pipe, described steel pipe is fixed on the described connecting screw rod, is evenly distributed with several holes on the described steel pipe.
The utility model compared with prior art has following advantage:
1. adopt metal hose to replace stainless steel mesh cloth, utilize the space of metal hose to realize air-breathing, because its space is little, its effect is better than stainless steel mesh cloth, simultaneously because metal hose is arranged on the inside of steel pipe, be difficult to burn out, improved the security of vavuum pump operation and the service life of exhaust tube so greatly, and the blind hole finished casting rate.
2. adopt the exhaust tube of this structure, in use very convenient, as long as the sand in the steel pipe is just beaten out and can reuse, cancelled the time of binding stainless steel mesh cloth, improved production efficiency.
Description of drawings:
Fig. 1 is the structural representation of exhaust tube described in the utility model
1. pump-line 2. connecting screw rods 3. steel pipes 4. metal hoses 5. holes
The specific embodiment:
As can be seen from Figure 1, a kind of blind hole foundry goods negative pressure casting exhaust tube, comprise pump-line 1, it is characterized in that: the end at described pump-line 1 is equipped with connecting screw rod 2, on described connecting screw rod 2, be set with the metal hose 4 of end sealing, be set with steel pipe 3 in the outside of described metal hose 4, described steel pipe 3 is fixed on the described connecting screw rod 2, and described steel pipe 3 is evenly distributed with several holes 5.
Claims (1)
1. blind hole foundry goods negative pressure casting exhaust tube, comprise pump-line (1), it is characterized in that: the end at described pump-line (1) is equipped with connecting screw rod (2), on described connecting screw rod (2), be set with the metal hose (4) of end sealing, be set with steel pipe (3) in the outside of described metal hose (4), described steel pipe (3) is fixed on the described connecting screw rod (2), and described steel pipe (3) is evenly distributed with several holes (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920036131XU CN201361701Y (en) | 2009-03-10 | 2009-03-10 | Exhaust tube for blind hole cast negative pressure casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200920036131XU CN201361701Y (en) | 2009-03-10 | 2009-03-10 | Exhaust tube for blind hole cast negative pressure casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201361701Y true CN201361701Y (en) | 2009-12-16 |
Family
ID=41472361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200920036131XU Expired - Fee Related CN201361701Y (en) | 2009-03-10 | 2009-03-10 | Exhaust tube for blind hole cast negative pressure casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201361701Y (en) |
-
2009
- 2009-03-10 CN CNU200920036131XU patent/CN201361701Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091216 Termination date: 20120310 |