CN203862964U - Hot blast device - Google Patents
Hot blast device Download PDFInfo
- Publication number
- CN203862964U CN203862964U CN201420196614.7U CN201420196614U CN203862964U CN 203862964 U CN203862964 U CN 203862964U CN 201420196614 U CN201420196614 U CN 201420196614U CN 203862964 U CN203862964 U CN 203862964U
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- CN
- China
- Prior art keywords
- section
- compressed air
- combustor
- hot
- box
- 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 - Lifetime
Links
- 239000004576 sand Substances 0.000 claims abstract description 10
- 239000007789 gas Substances 0.000 claims description 23
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 239000003345 natural gas Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000013021 overheating Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 230000000149 penetrating effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003110 molding sand Substances 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Abstract
The utility model belongs to the field of cast or mold core treatment, in particular to a hot blast device which is connected with a core heating box, and comprises a compressed air source, an airflow pipe and a burner, wherein the airflow pipe comprises an inlet air section, a spiral section and an outlet air section according to the flowing sequence of compressed air; the inlet air section is connected with the compressed air source; a pressure regulating valve is arranged on the inlet air section; the spiral section is arranged in a heat insulation case body; the fire spraying opening of the burner is also arranged in the heat insulation box body and opposite to the spiral section; the outlet air section is opposite to the sand jetting opening of the core heating box. Compared with the traditional heating device adopting an electric heat conduction pipe, the phenomenon of local overheating can be avoided, the heating can be more uniform. Moreover, the core heating box can be heated only by connecting the outlet air section with the sand jetting opening, which is simpler than the method of mounting a heat transmission plate in the prior art.
Description
Technical field
The invention belongs to the process field of casting mold or core.
Background technology
Traditional hot-box core making process is by means of core shooter, by mixed molding sand with certain pressure (being generally 0.3～0.5MPa), be injected in the core box of 180～260 ℃ of heating-up temperatures, rely on and to there is the mould of uniform temperature and the conduction of heat of the core contact surface core manufacturing craft that moulding hardens that heats up gradually from outside to inside from the core surface in core box.Hot box partly consists of core box body, loose piece, positioner, heater, exhaust apparatus, ejecting mechanism etc., hot box heating has electrical heating and two kinds of modes of fuel gas heating, but in actual production, electrical heating application is comparatively general, its feature be heat evenly, heat up steadily, but heating element heater programming rate is slow, power consumption is large and installation heating element heater can affect the layout of core ejecting device and exhaust apparatus.Conventional electric heater unit has two kinds of general heating plate and Special heaters, and wherein Special heater is that electrical heating elements is directly installed in hot box body, mixes and connects wire and temperature measuring equipment, without heating plate is set in addition.
In patent CN 202263895 U, disclose a kind of hot box of casting use, improvement is that in-core arranges some internal mold heating tubes in internal mold.The shortcoming of such scheme is: the mode of 1. burying heating tube in mould underground, may cause mould hot-spot, cannot be by heat Transmit evenly in the molding sand in mould, if adopt electric boiling plate, possibly because thermal stress causes gap between electric boiling plate and core box to increase, affect heat-transfer effect and mould precision, increase difficulty also to dismounting heating tube; 2. the heating-up temperature of hot box remains essentially in more than 200 ℃, and electrically heated mode cannot guarantee so continuous high temperature, and adopts the direct heating of combustion gas cannot control accurately temperature.
Summary of the invention
The invention is intended to provide the hot air apparatus that a kind of programming rate is fast, heat transfer is even, installation difficulty is low.
Object of the present invention can reach by following measures: hot air apparatus, be connected with hot box, comprise compressed air source, gas flow tube and combustor, gas flow tube is divided into wind inlet section, spiral section and wind outlet section successively according to compressed air sequence of flow, described wind inlet section is connected with compressed air source and is provided with pressure-regulating valve, and spiral section is arranged in body of thermal insulating box, the bocca of combustor is also positioned at body of thermal insulating box and relative with described spiral section, described wind outlet section with hot box to penetrate sand mouth relative.
Technique scheme difference with the prior art is: compressed air source is connected with wind inlet section, compressed air is along wind inlet section, the order of spiral section and wind outlet section flows in gas flow tube, the pressure-regulating valve of wind inlet section can regulate compressed-air actuated flow velocity, and spiral section is relative with the bocca of combustor, the flame of combustor ejection can heat the spiral section of gas flow tube, compressed air temperature in spiral section is raise fast, the compressed air of high temperature is along wind outlet section, penetrating Sha Kou enters in hot box, because the mobility of gas is strong, high temperature compressed air can be equably by penetrating gap in core and sand grain surface sufficient heat exchange along journey, being particularly conducive to needs to remove the moisture that contains or the core of solvent based material solidifies in solidification process, hot box inner chamber is heated, the present invention compares traditional electric heat pipe heating, the phenomenon that there will not be hot-spot, heat more even, curing efficiency is higher, more be conducive to reduce casting-up because the gas contracting that moisture causes, the gas quality problems of giving up, in addition, only need to by wind outlet section with penetrate the mounting means that sand mouth is connected and can realize the heating to hot box, also simpler than the installation of heat transfer plate.
Further, described compressed air source is air pump, compressed air cylinder or air compression station, and factory can select different compressed air sources as required.
Further, the wind outlet section inwall of described gas flow tube is provided with temperature sensor, this temperature sensor is connected with central control system, this central control system is also connected with barometric damper with combustor, and the compressed-air actuated temperature that central control system can record according to temperature sensor regulates and controls, if temperature is higher than setting value, driving air flow control valve increases the flow velocity of compressed air stream, and turn down combustor, and make the compressed air temperature in gas flow tube be reduced to setting value, realize temperature adjusting accurately.
Further, stating combustor is natural gas combustion engine, more environmental protection and energy saving.
Further, gas flow tube is stainless steel tube, more durable.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Fig. 1 is the structural representation of hot air apparatus embodiment 1 of the present invention.
The specific embodiment
Embodiment 1: as shown in Figure 1: hot air apparatus, by central control system, controlled, comprise air pump 1, gas flow tube 2 and combustor 3, gas flow tube 2 is divided into wind inlet section 21, spiral section 22 and wind outlet section 23 successively according to compressed air sequence of flow, wind inlet section 21 is connected with air pump 1, and pressure-regulating valve 4 is installed on wind inlet section 21.The spiral section 22 of gas flow tube 2 is arranged in body of thermal insulating box, and the bocca of combustor 3 is also installed in body of thermal insulating box, and this bocca is relative with spiral section 22, after combustor 3 starts, and can the jet out flames spiral section 22 of heated air stream pipe 2 of bocca.The wind outlet section 23 of gas flow tube 2 and hot box to penetrate sand mouth relative, after penetrating sand machine and penetrating sand, high temperature compressed air passes in this hot box, on the inwall of gas flow tube 2 wind outlet sections 23, is fixed with temperature sensor.Temperature sensor, pressure-regulating valve 4 and combustor 3 are all connected with central control system.Wherein, combustor 3 adopts natural gas combustion engine 3 conventionally, and gas flow tube 2 adopts stainless steel tube.
Air pump 1 is connected with wind inlet section 21, compressed air is along wind inlet section 21, the order of spiral section 22 and wind outlet section 23 flows in gas flow tube 2, pressure-regulating valve 4 can regulate compressed-air actuated flow velocity, the flame of the ejection of combustor 3 can gas flow tube 2 spiral section 22 heat, compressed air temperature in spiral section 22 is raise fast, the compressed air of high temperature is along wind outlet section 23, penetrating Sha Kou enters in hot box, because the mobility of gas is strong, high temperature compressed air can heat hot box inner chamber equably, the present invention compares traditional electric heat pipe heating, the phenomenon that there will not be hot-spot, heat more even, in addition, only need to by wind outlet section 23 with penetrate the mounting means that sand mouth is connected and can realize the heating to hot box, also simpler than the installation of heat transfer plate.
Embodiment 2: as different from Example 1, adopt compressed air cylinder or air compression station to replace air pump.
The foregoing is only the detailed description of preferred embodiment of the present invention, be not used for limiting the present invention, the embodiment of all similar variations of doing according to creation spirit of the present invention, all should be contained among the present invention.
Claims (5)
1. hot air apparatus, be connected with hot box, it is characterized in that: comprise compressed air source, gas flow tube and combustor, gas flow tube is divided into wind inlet section, spiral section and wind outlet section successively according to compressed air sequence of flow, described wind inlet section is connected with compressed air source and is provided with pressure-regulating valve, and spiral section is arranged in body of thermal insulating box, the bocca of combustor is also positioned at body of thermal insulating box and relative with described spiral section, described wind outlet section and hot box to penetrate sand mouth relative.
2. hot air apparatus according to claim 1, is characterized in that: described compressed air source is air pump, compressed air cylinder or air compression station.
3. hot air apparatus according to claim 1 and 2, is characterized in that: the wind outlet section inwall of described gas flow tube is provided with temperature sensor, and this temperature sensor is connected with central control system, and this central control system is also connected with barometric damper with combustor.
4. hot air apparatus according to claim 3, is characterized in that: described combustor is natural gas combustion engine.
5. hot air apparatus according to claim 4, is characterized in that: described gas flow tube is stainless steel tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196614.7U CN203862964U (en) | 2014-04-22 | 2014-04-22 | Hot blast device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420196614.7U CN203862964U (en) | 2014-04-22 | 2014-04-22 | Hot blast device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203862964U true CN203862964U (en) | 2014-10-08 |
Family
ID=51643954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420196614.7U Expired - Lifetime CN203862964U (en) | 2014-04-22 | 2014-04-22 | Hot blast device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203862964U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949596A (en) * | 2014-04-22 | 2014-07-30 | 重庆长江造型材料（集团）股份有限公司 | Air heater |
| CN106819186A (en) * | 2017-03-23 | 2017-06-13 | 贵州省凤冈县永田露茶业有限公司 | The technique of Tea Processing production |
-
2014
- 2014-04-22 CN CN201420196614.7U patent/CN203862964U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103949596A (en) * | 2014-04-22 | 2014-07-30 | 重庆长江造型材料（集团）股份有限公司 | Air heater |
| CN106819186A (en) * | 2017-03-23 | 2017-06-13 | 贵州省凤冈县永田露茶业有限公司 | The technique of Tea Processing production |
| CN106819186B (en) * | 2017-03-23 | 2019-11-19 | 贵州省凤冈县永田露茶业有限公司 | The technique of tea processing production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 400709 No. 6 Wuxing Middle Road, Tongjiaxi Town, Beibei District, Chongqing Patentee after: CHONGQING CHANGJIANG RIVER MOULDING MATERIAL (GROUP) Co.,Ltd. Address before: 400 000 Wuxing Road, Tongjiaxi Town, Beibei District, Chongqing Patentee before: CHONGQING CHANGJIANG RIVER MOULDING MATERIAL (GROUP) Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |