CN202116605U - Pit type cryogenic treatment furnace - Google Patents
Pit type cryogenic treatment furnace Download PDFInfo
- Publication number
- CN202116605U CN202116605U CN201120196153XU CN201120196153U CN202116605U CN 202116605 U CN202116605 U CN 202116605U CN 201120196153X U CN201120196153X U CN 201120196153XU CN 201120196153 U CN201120196153 U CN 201120196153U CN 202116605 U CN202116605 U CN 202116605U
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- Prior art keywords
- furnace
- liquid nitrogen
- cryogenic treatment
- heater
- furnace body
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- Expired - Fee Related
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Abstract
The utility model relates to a pit type cryogenic treatment furnace, belonging to the field of material cryogenic treatment. A furnace body and a furnace cover are cylindrical. Both internal parts of the furnace body and the furnace cover are filled with a polyurethane heat preservation material. A motor is installed above the furnace cover. A centrifugal fan is installed below the furnace cover. A liquid nitrogen injection pipe is arranged outside the centrifugal fan. A low-temperature electromagnetic valve and the liquid nitrogen injection pipe are connected onto a nitrogen conveying pipeline. A thermal resistor is arranged on the furnace body. The measuring end of the thermal resistor is arranged in the furnace body. An exhaust pipe is arranged at the lower end of the furnace body. The pit type cryogenic treatment furnace disclosed by the utility model has the advantages that: the structure is novel; the temperature in the furnace is decreased through gasification latent heat of the liquid nitrogen so that the refrigeration is realized; work-pieces can be cryogenically treated under low temperature; the temperature change can be effectively controlled; materials cannot be damaged; and the pit type cryogenic treatment furnace is advantageous for industrial production popularization.
Description
Technical field
The utility model belongs to--and the sub-zero treatment field of-material refers in particular to a kind of sub-zero treatment equipment that is used for.
Background technology
At present, both at home and abroad all in the research of carrying out sub-zero treatment energetically, and this technical application to a lot of fields.Sub-zero treatment can improve the mechanical property and the stability of material effectively, is widely used in fields such as mould, cutter, bearing, precision measuringtolls.Traditional sub-zero treatment is that workpiece directly is put in the container that liquid nitrogen is housed, and makes the workpiece quenching to liquid nitrogen temperature, and under this temperature, stays for some time; Last rewarming and accomplish whole sub-zero treatment process, the cooling rate of this method is very fast, causes thermal stresses excessive; Easily workpiece material is caused tissue injury; And workpiece material cooling rate in temperature-fall period is uncontrollable, and then influences the adjustability of technology, is unfavorable for that industrial production promotes.
Summary of the invention
The utility model provides a kind of well formula sub-zero treatment stove, comparatively fast workpiece material is caused tissue injury to solve existing deep cooling stove cooling rate, influences the problem of technology adjustability.
The technical scheme that the utility model is taked is: body of heater and bell are cylindrical, the inner all filled polyurethane lagging materials of body of heater and bell, and motor is installed in above the bell; Centrifugal fan is installed in below the bell; There is the liquid nitrogen spray pipe in the outside of centrifugal fan, and low-temperature solenoid valve, liquid nitrogen spray pipe coupling have hot resistance on the body of heater on the nitrogen feeding pipe road; The measuring junction of hot resistance places body of heater inner, and there is vapor pipe the body of heater lower end.
The advantage of the utility model is: novel structure, and utilize the gasification latent heat of liquid nitrogen to make the interior temperature decline of stove reach the refrigeration purpose, realize workpiece sub-zero treatment at low temperatures, effectively controlled temperature variation does not damage material, is beneficial to industrial popularization.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the part sectioned view of the utility model.
Embodiment
Body of heater 1 is cylindrical with bell 2, body of heater 1 and bell 2 inner all filled polyurethane lagging materials, and motor 3 is installed in above the bell 2; Centrifugal fan 9 is installed in below the bell 2; There is liquid nitrogen spray pipe 8 in the outside of centrifugal fan 9, and low-temperature solenoid valve 4, liquid nitrogen spray pipe 8 are connected on the nitrogen feeding pipe road 5, and hot resistance 6 is arranged on the body of heater 1; The measuring junction of hot resistance 6 places body of heater 1 inside, and there is vapor pipe 7 body of heater 1 lower end.
The mode of operation of the utility model is: will need the workpiece of sub-zero treatment to place in the body of heater 1; Bell 2 closes; Liquid nitrogen is ejected into pit furnace body 1 inside via nitrogen feeding pipe road 5, low-temperature solenoid valve 4 and liquid nitrogen spray pipe 8, and the low temperature nitrogen after the gasification flows in body of heater 1 circulating inside under the effect of centrifugal fan 9, utilizes the gasification latent heat of liquid nitrogen to make temperature decline in the stove; Realize the workpiece purpose of sub-zero treatment at low temperatures, waste gas is discharged by vapor pipe 7 then.
Claims (1)
1. well formula sub-zero treatment stove, it is characterized in that: body of heater and bell are cylindrical, the inner all filled polyurethane lagging materials of body of heater and bell; Motor is installed in above the bell, and centrifugal fan is installed in below the bell, and there is the liquid nitrogen spray pipe in the outside of centrifugal fan; Low-temperature solenoid valve, liquid nitrogen spray pipe coupling are on the nitrogen feeding pipe road; Hot resistance is arranged on the body of heater, and the measuring junction of hot resistance places body of heater inner, and there is vapor pipe the body of heater lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120196153XU CN202116605U (en) | 2011-06-13 | 2011-06-13 | Pit type cryogenic treatment furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120196153XU CN202116605U (en) | 2011-06-13 | 2011-06-13 | Pit type cryogenic treatment furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202116605U true CN202116605U (en) | 2012-01-18 |
Family
ID=45457686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120196153XU Expired - Fee Related CN202116605U (en) | 2011-06-13 | 2011-06-13 | Pit type cryogenic treatment furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202116605U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433616A (en) * | 2013-07-25 | 2013-12-11 | 中国科学院理化技术研究所 | Friction stir welding device |
| CN103982751A (en) * | 2014-05-04 | 2014-08-13 | 南通天工深冷新材料强化有限公司 | Subzero treatment process for macromolecular wear-resistant material in pipeline |
| CN111365919A (en) * | 2020-04-16 | 2020-07-03 | 无锡爱思科仪器有限公司 | Gas-phase and liquid-phase cryogenic system |
-
2011
- 2011-06-13 CN CN201120196153XU patent/CN202116605U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103433616A (en) * | 2013-07-25 | 2013-12-11 | 中国科学院理化技术研究所 | Friction stir welding device |
| CN103982751A (en) * | 2014-05-04 | 2014-08-13 | 南通天工深冷新材料强化有限公司 | Subzero treatment process for macromolecular wear-resistant material in pipeline |
| CN103982751B (en) * | 2014-05-04 | 2016-06-01 | 南通天工深冷新材料强化有限公司 | A kind of technique that the wear-resisting material of pipeline inner macromolecule is carried out sub-zero treatment |
| CN111365919A (en) * | 2020-04-16 | 2020-07-03 | 无锡爱思科仪器有限公司 | Gas-phase and liquid-phase cryogenic system |
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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: 20120118 Termination date: 20150613 |
|
| EXPY | Termination of patent right or utility model |