CN203124641U - Air blast protection device of sand floating machine - Google Patents
Air blast protection device of sand floating machine Download PDFInfo
- Publication number
- CN203124641U CN203124641U CN 201220749954 CN201220749954U CN203124641U CN 203124641 U CN203124641 U CN 203124641U CN 201220749954 CN201220749954 CN 201220749954 CN 201220749954 U CN201220749954 U CN 201220749954U CN 203124641 U CN203124641 U CN 203124641U
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- CN
- China
- Prior art keywords
- protective cover
- air blast
- protection device
- air
- sand
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- Expired - Fee Related
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Abstract
The utility model relates to an air blast protection device of a sand floating machine. The air blast protection device comprises a protective cover and a support pillar connected with the bottom of the protective cover, wherein the support pillar is internally provided with an air duct; and the lower part of the protective cover is provided with a plurality of vent holes which are communicated with the air duct in the support pillar. The air blast protection device has the beneficial effects that the inclined plane of the lower part of the protective cover is provided with the vent holes, so that the contact area between blasted air and sand can be enlarged effectively; an included angle is formed between the inclined plane with the vent holes and the upper inclined plane of the protective cover, so that the direct impact of the blasted air to a wax piece can be buffered to a certain extent, and the damage rate of a thin wall or the wax piece prone to deformation can be reduced; most importantly, dropping pulp lumps are filtered under the protective cover, so that the influence of the pulp lumps to the shell mold quality can be alleviated; and furthermore, the tail end of the support pillar is provided with a thread which is matched with a small hole of a bottom plate of the sand floating machine, so that the air blast protection device is convenient to use.
Description
Technical field
The utility model relates to casting field, specifically a kind of protector during for floating sand machine air blast.
Background technology
In the hot investment casting industry, process for making shell is a key technology, and before casting out cast product, how producing the good and stable shell mould of quality becomes the problem that hot investment casting company pays close attention to the most.In process for making shell, an involved procedure is stucco.At present, stucco mode is divided into floating sand and drenches two kinds in sand.Taking cost into account, then be that floating sand has advantage, so floating sand operation generally can be selected to use by most hot investment casting producer.
Just it seems at present that the equipment that is used for floating sand generally all is floating sand machines.And mostly the structure of floating sand machine is similar, the especially design of base plate.Nowadays, mostly the base plate of floating sand machine is dull and stereotyped scheme with holes, utilizes supporting blower fan directly sand blast to be floated from base plate.Such design can directly utilize the pressure of blower fan, namely effectively utilizes the pressure of air compressor machine.But simultaneously, also there is certain problem in this design: the one, and, the sand that wind-force floats can fling to wax spare, causes the damage of thin-walled wax spare or yielding wax spare easily; The 2nd,, the slurries of wax spare drippage fall in the floating sand machine, can not well obtain filtering; The 3rd,, in floor below with holes, must use screen pack, could prevent effectively that like this sand from falling in the hole, avoid causing obstruction, because in case generation is blocked, cause the wind-force deficiency of floating sand machine inside easily, cause blower fan to damage.
The utility model content
According to above-mentioned weak point, the utility model purpose provides a kind of protector during for floating sand machine air blast.
For achieving the above object, the technical solution of the utility model is: a kind of floating sand machine air blast protector, and it comprises protective cover and the support column that links to each other with the protective cover bottom, support column inside is provided with the air channel, described protective cover bottom is provided with some wind hole, and described wind hole is connected with the inner air channel of support column.
Preferably: described protective cover top is circular cone or frustum, and the bottom is inverted frustum.
Preferably: inclined-plane and the angle between the protective cover ramp at place, described wind hole are the 60-120 degree.
Preferably: described wind bore dia summation is 2:1-4:1 with the diameter ratio in air channel.
Preferably: described support column end is provided with and floats the screw thread that sand machine bottom board aperture is complementary.
The beneficial effects of the utility model are: the utility model is provided with the wind hole at protective cover lower bevel place, can effectively increase the contact area of air blast and sand, and the angle of inclined-plane, place, wind hole and protective cover ramp, cushioned the direct impact of air blast to wax spare to a certain extent, reduced the damage ratio of thin-walled or yielding wax spare, most important effect is the lumps of drippage can be filtered below protective cover, has reduced the influence of lumps to shell mould quality.In addition, the support column end is provided with and floats the screw thread that sand machine bottom board aperture is complementary, the convenient use.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is cutaway view of the present utility model.
Fig. 3 is upward view of the present utility model.
The specific embodiment
Below in conjunction with the specific embodiment the utility model is described further.
A kind of floating sand machine air blast protector as shown in Figure 1, 2, 3 as can be known, it comprises protective cover and the support column 4 that links to each other with protective cover bottom, support column 4 inside are provided with air channel 6; Protective cover top 1 is circular cone or frustum, and protective cover bottom 2 is inverted frustum, and wherein, protective cover bottom 2 is provided with some wind hole 3, and wind hole 3 is connected with support column 4 inner air channels.Inclined-plane and the angle between the protective cover ramp at 3 places, wind hole are the 60-120 degree.Wind hole 3 diameter summations are 2:1-4:1 with the diameter ratio in air channel 6.Support column 4 ends are provided with and float the screw thread 5 that sand machine bottom board aperture is complementary.
When floating sand machine started, by this protector is installed in floating sand machine bottom board aperture, the wind in the air channel 6 were dispersed to each 3 places, wind hole and blow out, and via the shunting of protective cover with compile effect, formed eddy current on every side at protective cover.Under eddy current effect, the sand around the protective cover becomes the sand of diffusion type motion and drive periphery to move together.The forms of motion that this eddy current drives, diffusion drives, slowed down the direct impact of sand flow to wax spare, the tree string is gone up the lumps that forms after the slurries scab of drippage, under the acting in conjunction that gravity and protective cover stop, when descending a string floating sand operation, the quality of the floating sand operation of tree string is well guaranteed.
For the resultant effect between air quantity, maximum floating sand weight, air quantity effective rate of utilization and the anti-blocking effect reaches best, wind hole 3 diameter summations and air channel 6 diameter proportions are between the 2:1-4:1; Inclined-plane and the angle between the protective cover ramp at 3 places, wind hole are between the 60-120 degree.The installation quantity of overall dimensions, base plate size and the protector of made protective cover is depended in collocation between these two sizes, in conjunction with these basic demands, requirement according to floating sand weight, floating Grains number is adjusted accordingly, and the function of protector is performed to optimum state.
Claims (5)
1. float sand machine air blast protector, it is characterized in that: it comprises protective cover and the support column (4) that links to each other with the protective cover bottom, support column (4) inside is provided with air channel (6), described protective cover bottom (2) is provided with some wind hole (3), and described wind hole (3) is connected with the inner air channel of support column (4) (6).
2. according to the described floating sand machine air blast protector of claim 1, it is characterized in that: described protective cover top (1) is circular cone or frustum, and protective cover bottom (2) are inverted frustum.
3. according to the described floating sand machine air blast protector of claim 1, it is characterized in that: inclined-plane and the angle between the protective cover ramp at place, described wind hole (3) are the 60-120 degree.
4. according to the described floating sand machine air blast protector of claim 1, it is characterized in that: the diameter of described wind hole (3) diameter summation and air channel (6) is than being 2:1-4:1.
5. according to the described floating sand machine air blast protector of claim 1, it is characterized in that: described support column (4) end is provided with and floats the screw thread (5) that sand machine bottom board aperture is complementary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749954 CN203124641U (en) | 2012-12-31 | 2012-12-31 | Air blast protection device of sand floating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220749954 CN203124641U (en) | 2012-12-31 | 2012-12-31 | Air blast protection device of sand floating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203124641U true CN203124641U (en) | 2013-08-14 |
Family
ID=48932662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220749954 Expired - Fee Related CN203124641U (en) | 2012-12-31 | 2012-12-31 | Air blast protection device of sand floating machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203124641U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104525864A (en) * | 2014-12-27 | 2015-04-22 | 中山市东升镇铸友设备制造厂 | Sand floating machine |
| CN104550717A (en) * | 2013-10-17 | 2015-04-29 | 六安市春晖精密铸造有限责任公司 | Fan protecting cover of sand floating machine |
-
2012
- 2012-12-31 CN CN 201220749954 patent/CN203124641U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104550717A (en) * | 2013-10-17 | 2015-04-29 | 六安市春晖精密铸造有限责任公司 | Fan protecting cover of sand floating machine |
| CN104525864A (en) * | 2014-12-27 | 2015-04-22 | 中山市东升镇铸友设备制造厂 | Sand floating machine |
| CN104525864B (en) * | 2014-12-27 | 2017-06-06 | 中山市东升镇铸友设备制造厂 | A kind of floating sand machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |