CN207900154U - A kind of Novel sand-core with negative pressure exhaust structure - Google Patents
A kind of Novel sand-core with negative pressure exhaust structure Download PDFInfo
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- CN207900154U CN207900154U CN201721911681.2U CN201721911681U CN207900154U CN 207900154 U CN207900154 U CN 207900154U CN 201721911681 U CN201721911681 U CN 201721911681U CN 207900154 U CN207900154 U CN 207900154U
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- exhaust
- sand core
- core
- sand
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Abstract
The utility model is a kind of Novel sand-core with negative pressure exhaust structure,Including sand core,Running through in sand core has exhaust passage,Multiple gas vents are uniformly provided on exhaust passage inner wall,Stairstepping erecting bed is equipped in sand core at the top of exhaust passage,It is connected with vertical exhaust tube at the top of exhaust passage,It is communicated with horizontal exhaust pipe at the top of exhaust tube,Exhaust pipe both ends open and one end is inserted with air inlet pipe,Air inlet pipe is connected with air blower,Exhaust tube is installed with inverted steps shape sealing-plug on the outer wall of exhaust passage connectivity part,Inverted steps shape sealing-plug is installed with the cooperation of stairstepping erecting bed,Fixed ring flat-plate is equipped at the top of inverted steps shape sealing-plug,Fixed ring flat-plate is located at sand core upper surface,Sand core upper surface is symmetrically pre-buried below fixed ring flat-plate, and there are two metal sleeves,Metal sleeve inner wall is equipped with screw thread,Fixed ring flat-plate is spirally connected fixation by fastening bolt and metal sleeve.The utility model utilizes negative pressure ventilation principle, and the gas that sand core is generated is extracted out, ensure that casting quality.
Description
Technical field
The utility model is related to sand core exhaust fields in casting process more particularly to a kind of new with negative pressure exhaust structure
Molding sand core.
Background technology
Casting is that Metal Melting through cooled and solidified, is leveled processing at meeting necessarily required liquid and pouring into casting mold
The technical process of the casting of predetermined shape, size and performance is obtained afterwards.Cast blank reaches because of almost forming and exempts from mechanical add
Work or the purpose processed on a small quantity reduce cost and reduce Production Time to a certain extent, and casting is modem devices manufacture work
One of fundamental technology of industry.
Sand core is the material for manufacturing core in Foundry Production, generally by casting model powder, moulding sand binder (resin, solidification
Agent) and the Modeling Materials such as additional thing mix according to a certain percentage.During cast, binder in sand core and organic
Object, which can be heated, releases gas, and the remaining moisture content in sand core can cause to cast by thermal evaporation, if these gases are not discharged
Part generates stomata.So there is an urgent need for a kind of sand cores that gas can be discharged.
Invention content
The utility model aims to solve the problem that the deficiencies in the prior art, and provides a kind of Novel sand with negative pressure exhaust structure
Core.
The utility model to achieve the above object, using following technical scheme：
A kind of Novel sand-core with negative pressure exhaust structure, including sand core, it is described through there is exhaust passage in the sand core
It is uniformly provided with multiple gas vents on exhaust passage inner wall, stairstepping erecting bed is equipped at the top of exhaust passage in the sand core,
It is connected with vertical exhaust tube at the top of the exhaust passage, is communicated with horizontal exhaust pipe at the top of the exhaust tube, the exhaust tube,
The T-shaped structure of exhaust pipe-shaped, the exhaust pipe both ends open and one end are inserted with air inlet pipe, and the air inlet pipe is connected with air blower, institute
The end for stating air inlet pipe insertion portion is located at the communication port of exhaust tube, exhaust pipe, the exhaust tube and exhaust passage connectivity part
Outer wall on be installed with inverted steps shape sealing-plug, the inverted steps shape sealing-plug is installed with the cooperation of stairstepping erecting bed, it is described fall
Fixed ring flat-plate is equipped at the top of stairstepping sealing-plug, the fixed ring flat-plate is located at sand core upper surface, and the sand core upper surface is described
Symmetrical pre-buried there are two metal sleeve below fixed ring flat-plate, the metal sleeve inner wall is equipped with screw thread, and the fixed ring flat-plate is logical
Fastening bolt and metal sleeve is crossed to be spirally connected fixation.
Distance of the gas vent away from sand core outer wall is 12mm, and the aperture of the gas vent is 4.5mm.
The exhaust tube, exhaust pipe are ceramic tube.
The utility model has the beneficial effects that：The utility model is provided with exhaust passage on sand core, and exhaust tube is inserted into row
In gas channel, high-seal, profit are realized by stairstepping erecting bed and inverted steps shape sealing-plug between exhaust tube and exhaust passage
With negative pressure ventilation principle, the gas that sand core is generated is extracted out, and cast product not will produce stomata, to ensure casting quality.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of exhaust tube, exhaust pipe, air inlet tube portion；
Fig. 3 is the internal structure schematic diagram of sand core；
In figure：1- sand cores；2- exhaust passages；3- gas vents；4- stairstepping erecting beds；5- exhaust tubes；6- exhaust pipes；7- into
Tracheae；8- air blowers；9- inverted steps shape sealing-plugs；10- fixes ring flat-plate；11- metal sleeves；
It is described in detail with reference to attached drawing below with reference to the embodiments of the present invention.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples：
As shown in Figure 1 to Figure 3, a kind of Novel sand-core with negative pressure exhaust structure, including sand core 1 pass through in the sand core 1
It is installed with exhaust passage 2, multiple gas vents 3 are uniformly provided on 2 inner wall of the exhaust passage, exhaust passage 2 is surrounded in the sand core 1
Top is equipped with stairstepping erecting bed 4, and 2 top of the exhaust passage is connected with vertical exhaust tube 5,5 top connection of the exhaust tube
There is a horizontal exhaust pipe 6, the exhaust tube 5, exhaust pipe 6 form T-shaped structure, 6 both ends open of the exhaust pipe and one end is inserted with
Air inlet pipe 7, the air inlet pipe 7 are connected with air blower 8, and the end of 7 insertion portion of the air inlet pipe is located at exhaust tube 5, exhaust pipe 6
At communication port, the exhaust tube 5 is installed with inverted steps shape sealing-plug 9, the inverted steps on the outer wall of 2 connectivity part of exhaust passage
Shape sealing-plug 9 is installed with the cooperation of stairstepping erecting bed 4, and 9 top of the inverted steps shape sealing-plug is equipped with fixed ring flat-plate 10, described solid
Determine ring flat-plate 10 and be located at 1 upper surface of sand core, 1 upper surface of the sand core is symmetrically pre-buried below the fixed ring flat-plate 10, and there are two metals
Casing 11,11 inner wall of the metal sleeve are equipped with screw thread, and the fixed ring flat-plate 10 passes through fastening bolt and 11 spiral shell of metal sleeve
Connect fixation.
Distance of the gas vent 3 away from 1 outer wall of sand core is 12mm, and the aperture of the gas vent 3 is 4.5mm.
The exhaust tube 5, exhaust pipe 6 are ceramic tube.
The utility model is provided with exhaust passage 2 on sand core 1, and exhaust tube 5 is inserted into exhaust passage 2, exhaust tube 5 and row
Realize that high-seal, 7 air inlet of air inlet pipe are being evacuated by stairstepping erecting bed 4 and inverted steps shape sealing-plug 9 between gas channel 2
Pipe 5, exhaust pipe 6 communication port at air pressure will produce reduction, the gas in sand core 1 under gas pressure enter exhaust tube 5, then from
Exhaust pipe 6 is discharged, that is to say, that utilizes negative pressure ventilation principle, in the case of 7 air inlet of air inlet pipe, gas that sand core 1 is generated
Extraction, cast product not will produce stomata, to ensure casting quality.
2 inner wall of exhaust passage of sand core 1 be equipped with multiple gas vents 3, the distance of gas vent 3 to 1 outer wall of sand core it is too small or
3 aperture of person's gas vent is excessive, and sand core is easy to split, and influences the intensity of sand core；The distance of gas vent 3 to 1 outer wall of sand core it is excessive or
3 aperture of person's gas vent is too small, then exhaust effect is bad.Distance of the utility model gas vent away from sand core outer wall is 12mm, exhaust
The aperture in hole is 4.5mm, and good exhaust effect, sand core strength is good.
The utility model is exemplarily described above in conjunction with attached drawing, it is clear that the utility model specific implementation not by
The limitation of aforesaid way, if the various improvement of the methodology and technical solution progress of the utility model are used, or without
Improvement directly applies to other occasions, both is within the protection scope of the present invention.
Claims (3)
1. a kind of Novel sand-core with negative pressure exhaust structure, including sand core (1), which is characterized in that run through in the sand core (1)
There is exhaust passage (2), multiple gas vents (3) are uniformly provided on exhaust passage (2) inner wall, the sand core (1) is interior around row
It is equipped with stairstepping erecting bed (4) at the top of gas channel (2), vertical exhaust tube (5) is connected at the top of the exhaust passage (2), it is described
Horizontal exhaust pipe (6) is communicated at the top of exhaust tube (5), the exhaust tube (5), exhaust pipe (6) form T-shaped structure, the row
Tracheae (6) both ends open and one end are inserted with air inlet pipe (7), and the air inlet pipe (7) is connected with air blower (8), and the air inlet pipe (7) is inserted
The end for entering part is located at the communication port of exhaust tube (5), exhaust pipe (6), and the exhaust tube (5) is connected to exhaust passage (2)
Inverted steps shape sealing-plug (9) is installed on the outer wall at place, the inverted steps shape sealing-plug (9) coordinates with stairstepping erecting bed (4)
Installation, inverted steps shape sealing-plug (9) top are equipped with fixed ring flat-plate (10), and the fixed ring flat-plate (10) is located on sand core (1)
Surface, sand core (1) upper surface is symmetrically pre-buried below the fixed ring flat-plate (10), and there are two metal sleeve (11), the gold
Belong to casing (11) inner wall and be equipped with screw thread, the fixed ring flat-plate (10) is spirally connected fixation by fastening bolt and metal sleeve (11).
2. a kind of Novel sand-core with negative pressure exhaust structure according to claim 1, which is characterized in that gas vent (3)
Distance away from sand core (1) outer wall is 12mm, and the aperture of the gas vent (3) is 4.5mm.
3. a kind of Novel sand-core with negative pressure exhaust structure according to claim 2, which is characterized in that the exhaust tube
(5), exhaust pipe (6) is ceramic tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721911681.2U CN207900154U (en) | 2017-12-30 | 2017-12-30 | A kind of Novel sand-core with negative pressure exhaust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721911681.2U CN207900154U (en) | 2017-12-30 | 2017-12-30 | A kind of Novel sand-core with negative pressure exhaust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207900154U true CN207900154U (en) | 2018-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721911681.2U Active CN207900154U (en) | 2017-12-30 | 2017-12-30 | A kind of Novel sand-core with negative pressure exhaust structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN207900154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111761030A (en) * | 2020-05-29 | 2020-10-13 | 芜湖市容川机电科技股份有限公司 | Horizontal sand core for casting and molding and pouring method thereof |
-
2017
- 2017-12-30 CN CN201721911681.2U patent/CN207900154U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111761030A (en) * | 2020-05-29 | 2020-10-13 | 芜湖市容川机电科技股份有限公司 | Horizontal sand core for casting and molding and pouring method thereof |
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