CN210334250U - Air drying device for inner cavity of investment casting shell - Google Patents
Air drying device for inner cavity of investment casting shell Download PDFInfo
- Publication number
- CN210334250U CN210334250U CN201921084384.4U CN201921084384U CN210334250U CN 210334250 U CN210334250 U CN 210334250U CN 201921084384 U CN201921084384 U CN 201921084384U CN 210334250 U CN210334250 U CN 210334250U
- Authority
- CN
- China
- Prior art keywords
- inner cavity
- long
- investment casting
- shell
- air
- 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
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to an investment casting shell inner cavity air-drying device, which comprises an air conduit extending into a long and narrow inner cavity of a shell, wherein the air conduit is a rigid piece, so that the air conduit can be controlled not to be contacted with the long and narrow inner cavity when extending into the long and narrow inner cavity, the tail end of the air conduit is a closed end, and a plurality of exhaust holes are arranged on the pipe wall of the air conduit for inputting gas into the long and narrow inner cavity; and the switch valve controls the air supply device to supply air for drying the long and narrow inner cavity to the ventilating pipeline. The air in the air supply device is blown into the long and narrow inner cavity through the exhaust holes of the ventilation pipeline so as to air-dry the inner cavity of the shell and ensure that the inner cavity of the shell can be fully dried. In addition, because the ventilation pipeline is a rigid piece, deformation and bending cannot occur, when the ventilation pipeline extends into the long and narrow inner cavity, the ventilation pipeline can be better controlled not to be in contact with the long and narrow inner cavity, so that the ventilation pipeline cannot damage the uncured coating in the inner cavity of the shell, and the quality of the shell is ensured.
Description
Technical Field
The utility model relates to an investment casting shell inner chamber air-dries device.
Background
The quality of the investment casting shell directly affects the quality of the casting, and the drying process in the shell preparation process is of great importance. The drying of the shell is influenced by the temperature and the humidity of the environment, the drying speed of the shell is too high and large area shrinkage is generated due to overhigh temperature and overlow humidity, and the phenomena of cracking, peeling and falling off can occur at edges and corners; too low temperature and too high humidity can lead to too slow drying speed, and the shell which is not completely dried can have local re-dissolution phenomenon in the process of coating a layer. Poor quality of the shell finally causes defects of inclusion, shrinkage cavity, air hole and the like of the casting, and the casting is scrapped.
In the prior art, the temperature and humidity of a shell drying room are mostly adjusted by adopting an air conditioner for drying an investment casting shell, and if the internal cavity structure of a casting is long and narrow and complex, the problems of insufficient drying of an inner cavity and uneven drying of an internal structure and an external structure are easily caused in the process of preparing and drying the shell, so that the quality of the shell is seriously influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an investment casting shell inner chamber air-dries device to solve prior art in the shell preparation process, because the shell inner chamber is long and narrow and cause the not enough technical problem of shell inner chamber drying easily.
In order to achieve the above object, the utility model discloses investment casting shell inner chamber air-dries technical scheme of device is:
investment casting shell inner chamber air-dries device includes: the ventilation pipeline is a rigid piece, so that the ventilation pipeline can be controlled not to be contacted with the long and narrow inner cavity when extending into the long and narrow inner cavity, the tail end of the ventilation pipeline is a closed end, and the pipe wall of the ventilation pipeline is provided with a plurality of exhaust holes for inputting gas into the long and narrow inner cavity so as to dry the long and narrow inner cavity; and the switch valve is used for connecting the air supply device and the ventilation pipeline so as to control the air supply device to supply air for drying the long and narrow inner cavity to the ventilation pipeline.
The beneficial effects are that: the ventilation pipeline extends into the long and narrow inner cavity of the shell, the switch valve connected with the air supply device is opened, and air in the air supply device is blown into the long and narrow inner cavity through the exhaust hole of the ventilation pipeline so as to air-dry the inner cavity of the shell, thereby ensuring that the inner cavity of the shell can be fully dried. In addition, because the ventilation pipeline is a rigid piece, deformation and bending cannot occur, when the ventilation pipeline extends into the long and narrow inner cavity, the ventilation pipeline can be better controlled not to be in contact with the long and narrow inner cavity, so that the ventilation pipeline cannot damage the uncured coating in the inner cavity of the shell, and the quality of the shell is ensured.
The exhaust holes are arranged in rows along the axial direction of the ventilation pipeline, and at least two rows of exhaust holes are arranged on the pipe wall of the ventilation pipeline around the circumference of the ventilation pipeline. The uniformity of the airflow sprayed by the gas in the inner cavity is ensured, and the phenomenon that the coating in the inner cavity is blown to be damaged due to strong airflow at a certain position is avoided.
The switch valve is connected with the ventilation pipeline through a conversion joint. Because the interface diameter between ooff valve and the air pipe may be different, through increasing crossover sub, make its both ends respectively correspond the connecting portion of adaptation ooff valve and air pipe.
The adapter is in threaded connection with the switch valve and is in welded connection with the ventilation pipeline. The adapter is directly welded on the ventilation pipeline, and only a switch valve needs to be installed when the adapter is used, so that the operation is convenient.
The adapter is in threaded connection with the switch valve and the ventilation pipeline. When the crossover sub damages, the change-over connection's of being convenient for change.
The ventilation pipeline is of an L-shaped structure and comprises a connecting pipe section connected with the switch valve and a drying pipe section perpendicular to the connecting pipe section, and the exhaust holes are formed in the drying pipe section. To fit most of the mould shell cavities.
The switch valve is a regulating valve. The size of the airflow entering the ventilation pipeline can be controlled, and the drying speed can be adjusted and controlled conveniently.
The ventilation pipeline is a stainless steel pipeline. The stainless steel and most of shell preparation slurry do not react, and the corrosion resistance is strong.
The section of the ventilating duct is square, circular or oval. Can adapt to the cross sections of different inner cavities, so that the drying of the inner cavities is not only sufficient, but also more uniform.
The pipe wall thickness of the ventilation pipeline is 1-2 mm. According to the extension shape of the inner cavity, the ventilation pipeline is convenient to bend into a shape matched with the long and narrow inner cavity.
Drawings
FIG. 1 is a schematic structural view of an investment casting shell cavity air drying device of the present invention;
FIG. 2 is a schematic view of the adapter and the ventilation duct of FIG. 1 assembled together;
FIG. 3 is a schematic view of the ventilation duct of FIG. 1;
FIG. 4 is a schematic structural view of the crossover joint of FIG. 1;
FIG. 5 is a schematic diagram of the regulator valve of FIG. 1;
in the figure: 1-ventilating duct; 11-an exhaust hole; 12-a pipe connection; 13-connecting the pipe sections; 14-a drying section; 2-a crossover joint; 21-a first joint connection; 22-a second joint connection; 3-adjusting the valve; 31-a valve stem; 32-gas supply connection; 33-regulating valve connection.
Detailed Description
The following describes embodiments of the present invention with reference to the accompanying drawings.
The utility model discloses a investment casting shell inner chamber air-dries device's concrete embodiment, as shown in FIG. 1, investment casting shell inner chamber air-dries device includes air pipe 1 for in going deep into the long and narrow inner chamber of shell, be equipped with a plurality of exhaust holes 11 on air pipe 1's the pipe wall, be arranged in to the long and narrow inner chamber of shell input gas in order to air-dry long and narrow inner chamber.
In this embodiment, the ventilation duct 1 is a rigid member, so that when the ventilation duct 1 extends into the long and narrow inner cavity, the ventilation duct 1 can be controlled not to contact with the long and narrow inner cavity, the ventilation duct 1 cannot damage the uncured coating in the inner cavity of the mold shell, and the quality of the mold shell is ensured. Preferably, the ventilation pipeline 1 is a stainless steel pipeline, stainless steel does not react with most of shell preparation slurry, the corrosion resistance is strong, the service life is prolonged, and the shell quality is ensured. In other embodiments, other rigid members that do not react with the shell-making slurry may be selected in order to ensure the useful life of the ventilation duct and the shell quality.
In this embodiment, the cross-section of ventilation pipe 1 is circular to most of shell inner chambers of adaptation, make the drying of inner chamber not only abundant, comparatively even moreover. In other embodiments, the cross-section of the ventilation duct may be square, oval, etc. In this embodiment, the wall thickness of the ventilation duct 1 is 1-2mm, and the ventilation duct 1 is conveniently bent into a shape matched with the long and narrow inner cavity according to the extension shape of the inner cavity of the shell. In other embodiments, the wall thickness of the ventilation duct can be larger than 2mm, so that materials are wasted, and the ventilation duct is inconvenient to bend and form in the later period; or the wall thickness of the ventilation pipeline is less than 1mm, and at the moment, although the material can be saved, the strength is relatively poor, and the ventilation pipeline is easy to deform under the pressure of gas. It should be noted that the length and diameter of the ventilation duct can be adaptively adjusted according to the size of the inner cavity of the shell.
In this embodiment, ventilation pipe 1's bending belongs to ripe processing technology, can adopt the bender to bend, also can adopt the self-control frock of bending to bend. The bending part may deform to a certain degree (such as an ellipse), and the influence on the ventilation effect can be improved by adjusting the gas flow, so that the influence effect can be ignored. The bending degree is convenient for stretching into the cavity and not colliding with the inner wall.
As shown in fig. 2, an adapter 2 is fixedly connected to an end of the ventilation duct 1, and the adapter 2 is made of stainless steel. Specifically, as shown in fig. 3, one end of the ventilation duct 1 has a duct connecting portion 12, and the other end is a closed end, so as to ensure that the air entering the ventilation duct 1 can be blown to the inner cavity of the shell from each exhaust hole 11, wherein the closed end is the end where the air flows. As shown in fig. 4, the adapter 2 has a first adapter connector 21 at one end and a second adapter connector 22 at the other end. The ventilation pipeline 1 and the conversion joint 2 are matched through the pipeline connecting part 12 and the second joint connecting part 22 to realize fixed connection.
Specifically, the duct connecting portion 12 has an internal thread, the second joint connecting portion 22 has an external thread, and the duct connecting portion 12 is screwed with the second joint connecting portion 22 to fixedly connect the ventilation duct 1 and the adapter 2. In other embodiments, the second joint connecting portion of the adapter is welded to the duct connecting portion to fixedly connect the ventilation duct and the adapter.
As shown in fig. 2 and 3, the ventilation duct 1 has an L-shaped structure to fit most of the inner cavities of the mold shell. Specifically, the ventilation duct 1 includes a connecting duct section 13 and a drying duct section 14 perpendicular to the connecting duct section 13, the exhaust holes 11 are provided on the drying duct section 14, and the duct connecting portion 12 is provided on the connecting duct section 13. In other embodiments, the ventilation duct may be designed according to the structure of the inner cavity of the shell, such as a straight duct, an arc duct, and the like.
As shown in fig. 1, the adapter 2 is connected to a regulating valve 3, the regulating valve 3 is connected to an air supply pipeline of an air supply device, the regulating valve 3 constitutes a switch valve, and the regulating valve 3 can control whether the air supply device supplies air to the ventilation pipeline 1 and the size of air flow entering the ventilation pipeline, so as to adjust and control the drying speed. Specifically, as shown in fig. 5, the regulating valve 3 includes a gas supply connection portion 32, a regulating valve connection portion 33, and a valve rod 31 for controlling the regulating valve 3, the regulating valve connection portion 33 is in threaded connection with the first joint connection portion 21 of the adapter 2 to realize the fixed connection between the adapter 2 and the regulating valve 3, and the gas supply connection portion 32 is used for connecting a gas supply device. Wherein the regulating valve 3 is an existing mature product. In other embodiments, the on-off valve is a valve that generally controls the opening and closing of the passageway.
As shown in fig. 1, the exhaust holes 11 are arranged in a row along the axial direction of the ventilation duct 1, and four rows of the exhaust holes are arranged on the wall of the ventilation duct 1 around the circumference of the ventilation duct to ensure the uniformity of the air flow sprayed out from the inner cavity, and avoid that the inner cavity coating is blown out by strong air flow at a certain position. In other embodiments, two, three or more than five rows of exhaust holes may be arranged on the wall of the ventilation duct to ensure uniformity of airflow ejected from the inner cavity. In other embodiments, the vent holes may be arbitrarily arranged, as long as the discharged air flow is ensured to be uniform. It should be noted that the aperture of the vent is adaptively adjusted according to the amount of air flow required for drying the cavity of the shell.
In this embodiment, the adjusting valve 3 is connected to the ventilation duct 1 through the adapter 2, and since the interface diameter between the adjusting valve 3 and the ventilation duct 1 may be different, the adapter 2 is added to enable the two ends of the adjusting valve to respectively correspond to the connecting portions of the adjusting valve 3 and the ventilation duct 1. In other embodiments, the adjusting valve connecting part of the adjusting valve is matched with the pipeline connecting part of the ventilating pipeline, and the adjusting valve and the ventilating pipeline are directly and fixedly connected with the pipeline connecting part through the adjusting valve connecting part, so that a conversion joint is omitted, and the cost is reduced.
During the use, make the air feed connecting portion of governing valve 3 connect air feeder, then stretch into air pipe 1 and treat dry shell inner chamber and fix, then open governing valve 3 through valve rod 31 and make the interior gas of air feeder through governing valve 3, crossover sub 2, air pipe 1 and exhaust hole 11 enter the shell inner chamber, carry out the drying to the shell inner chamber, according to the dry speed of shell inner chamber, can control the size of opening of governing valve 3, thereby control the air current size that gets into air pipe 1, be convenient for adjust and control drying speed. After the drying is finished, the fixation is released and the ventilation pipeline 1 is taken out from the inner cavity of the shell. Wherein, the air supply device can be an air compressor, and the air temperature is room temperature.
The utility model provides an investment casting shell inner chamber air-dries device, simple structure, convenient operation, and the air current is even stable, makes the drying of shell inner chamber controllable, and air pipe can not destroy the not solidified coating of shell inner chamber simultaneously, has improved the shell quality to the foundry goods quality has been improved.
Claims (10)
1. Investment casting shell inner chamber air-dries device, its characterized in that includes:
the ventilation pipeline is a rigid piece, so that the ventilation pipeline can be controlled not to be contacted with the long and narrow inner cavity when extending into the long and narrow inner cavity, the tail end of the ventilation pipeline is a closed end, and the pipe wall of the ventilation pipeline is provided with a plurality of exhaust holes for inputting gas into the long and narrow inner cavity so as to dry the long and narrow inner cavity;
and the switch valve is used for connecting the air supply device and the ventilation pipeline so as to control the air supply device to supply air for drying the long and narrow inner cavity to the ventilation pipeline.
2. The investment casting shell inner cavity air drying device of claim 1, wherein the exhaust holes are arranged in rows along the axial direction of the ventilation duct, and at least two rows of exhaust holes are arranged on the wall of the ventilation duct around the circumference of the ventilation duct.
3. The investment casting shell cavity air drying apparatus of claim 1 or 2, wherein the on-off valve is connected to the vent conduit by a crossover joint.
4. The investment casting shell cavity air drying device of claim 3, wherein the adapter is in threaded connection with the on-off valve and the adapter is in welded connection with the vent conduit.
5. The investment casting shell cavity air drying device of claim 3, wherein the adapter is threadably connected to both the on-off valve and the vent conduit.
6. The investment casting shell inner cavity air drying device as claimed in claim 1 or 2, wherein the ventilation duct is of an L-shaped structure, the ventilation duct comprises a connecting pipe section connected with the switch valve and a drying pipe section perpendicular to the connecting pipe section, and the exhaust hole is formed in the drying pipe section.
7. The investment casting shell cavity air drying apparatus of claim 1 or 2, wherein the on-off valve is a regulating valve.
8. The investment casting shell cavity air drying device of claim 1 or 2, wherein the vent conduit is a stainless steel conduit.
9. The investment casting shell cavity air drying device of claim 1 or 2, wherein the cross-section of the vent conduit is square, circular or elliptical.
10. The investment casting shell cavity air drying device of claim 1 or 2, wherein the ventilation duct has a duct wall thickness of 1-2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084384.4U CN210334250U (en) | 2019-07-11 | 2019-07-11 | Air drying device for inner cavity of investment casting shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921084384.4U CN210334250U (en) | 2019-07-11 | 2019-07-11 | Air drying device for inner cavity of investment casting shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210334250U true CN210334250U (en) | 2020-04-17 |
Family
ID=70193657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921084384.4U Expired - Fee Related CN210334250U (en) | 2019-07-11 | 2019-07-11 | Air drying device for inner cavity of investment casting shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210334250U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633183A (en) * | 2020-06-12 | 2020-09-08 | 汤鹏飞 | Drying and reinforcing treatment method for lost foam casting shell |
| CN112045151A (en) * | 2020-09-23 | 2020-12-08 | 贵州安吉航空精密铸造有限责任公司 | Drying device for casting shell |
| CN112620580A (en) * | 2020-12-23 | 2021-04-09 | 安徽应流铸业有限公司 | Shell making process for long-hole castings |
-
2019
- 2019-07-11 CN CN201921084384.4U patent/CN210334250U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111633183A (en) * | 2020-06-12 | 2020-09-08 | 汤鹏飞 | Drying and reinforcing treatment method for lost foam casting shell |
| CN112045151A (en) * | 2020-09-23 | 2020-12-08 | 贵州安吉航空精密铸造有限责任公司 | Drying device for casting shell |
| CN112620580A (en) * | 2020-12-23 | 2021-04-09 | 安徽应流铸业有限公司 | Shell making process for long-hole castings |
| CN112620580B (en) * | 2020-12-23 | 2023-05-26 | 安徽应流铸业有限公司 | Shell making process for long hole castings |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210334250U (en) | Air drying device for inner cavity of investment casting shell | |
| CN103071765A (en) | Partial air cooling method for precast aperture passage in investment casting shell | |
| CN104544501B (en) | Macadimia nut drying method adopting weighing devices | |
| CN107263793A (en) | The manufacture craft and its special equipment of a kind of cavity | |
| CN207123120U (en) | The drying room that a kind of Large Copacity is uniformly dried | |
| CN204270749U (en) | A kind of cable cover(ing) blow-dry device | |
| CN109695943B (en) | Temperature and humidity control system of coating air conditioner based on big data deep learning | |
| CN201295740Y (en) | Device for controlling core making and sand draining of box core | |
| CN208646086U (en) | Mold is used in bellows production | |
| CN207290391U (en) | Fast drainage mold demoulding draining feeder | |
| CN206665388U (en) | A kind of inovulant protection against the tide storage device | |
| CN210415196U (en) | Vacuum box for casting film machine | |
| JP7197917B2 (en) | Resin-coated sand preheating device | |
| CN216199915U (en) | Plain type bearing rapid cooling device | |
| CN210182149U (en) | Blast apparatus for cable manufacture | |
| CN210801809U (en) | Ceramic solar panel blank standing room | |
| CN206817955U (en) | A kind of white die coating material drying hot-air system | |
| CN105571300B (en) | The adjustable annular air blade device of one kind | |
| CN207789540U (en) | A kind of bivalve heating control system of the automatic rapidform machine of digitlization | |
| CN205718254U (en) | A kind of plastics ball drying machine of improvement | |
| CN206145848U (en) | Constant temperature and humidity system device suitable for precision casting environment | |
| CN213512446U (en) | Hot air pipeline with uniform air supply | |
| CN206420272U (en) | The apparatus for baking produced for electric wire | |
| CN212057655U (en) | Uniform air supply mechanism with double-impeller structure | |
| CN104240863A (en) | Cable sheath blow-drying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20200417 Termination date: 20210711 |