CN201228273Y - Nozzle cooling vacuum gas quenching furnace capable of convection heating - Google Patents
Nozzle cooling vacuum gas quenching furnace capable of convection heating Download PDFInfo
- Publication number
- CN201228273Y CN201228273Y CNU2008200140736U CN200820014073U CN201228273Y CN 201228273 Y CN201228273 Y CN 201228273Y CN U2008200140736 U CNU2008200140736 U CN U2008200140736U CN 200820014073 U CN200820014073 U CN 200820014073U CN 201228273 Y CN201228273 Y CN 201228273Y
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- heating chamber
- heating
- nozzle
- cooling
- air door
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Abstract
A nozzle-cooling vacuum gas quenching furnace capable of convection heating comprises a furnace body axially parallel to the ground and adopts a self-control system. The nozzle-cooling vacuum gas quenching furnace is characterized in that a heating chamber has a square structure; cooling air passages and nozzles are arranged around the inner walls of the square heating chamber; the nozzles are vertical to the surface of a working area; air return holes are formed at the both longitudinal ends of the heating chamber, wherein the air return holes adopt parallelogram air door opening/closing structures provided with respective opening cylinder, and can move almost vertical to a heat-insulation layer; a convection fan is arranged in the heating chamber; and the cylinder is introduced into the furnace body and is movably sealed by metal bellows. Electromagnetic elements electrically connected with a control system are arranged for each executive part; and the control system can achieve interlock control of the opening and closing of the air door, start and stop of the convection fan, and the heating and cooling process in the operation. The novel heating chamber structure can achieve convection heating, and has the advantages of improved heating speed and uniformity, reduced thermal loss and enhanced cooling effect.
Description
Technical field
The utility model relates to the gas-quenching vacuum furnace of metallurgical equipment, and the convective heating nozzle cooling vacuum gas quenching furnace is arranged.
Background technology
In vacuum air-quenching furnace, adopt the nozzle type of cooling, speed of cooling is faster than adopting the air door structure parallel airflow type of cooling, and this is the fact through facts have proved.But the nozzle cooling system all adopts the fixed return air inlet, and when increasing the convective heating function, fixedly the return air inlet thermosteresis is very big, also can cause the inside and outside gaseous exchange of stove hall heating chamber, causes the furnace temperature inequality.
Summary of the invention
But the purpose of this utility model provides a kind of nozzle cooling vacuum gas quenching furnace of convective heating, realizes convective heating, and hear rate is few and cooling performance is superior.
But the nozzle cooling vacuum gas quenching furnace of the convective heating that this is novel, the body of heater axially parallel is in ground, adopt robot control system(RCS), it is characterized in that heating chamber is a cube structure, settle cooling air channel and nozzle around the square heating chamber, nozzle is perpendicular to the workspace surface, return air inlet is established at the vertical two ends of heating chamber, adopts the switching air door structure of parallelogram, and establishes the cylinder that opens the door separately, in the one end air door convection fan is set, cylinder is introduced the furnace sealing place and is done dynamic seal with metallic bellows.
The vacuum air-quenching furnace cooling performance of this new design is superior, and complete function.The design's characteristics are: heating chamber adopts square structure, establishes the nozzle cooling all around, the distance of shortening and impartial nozzle and workpiece, nozzle is perpendicular to the workspace surface, compare with circular heating chamber, shorten the distance of nozzle to workpiece, cooling draught is directly vertically got on the workpiece, obtained stronger cooling performance.Air door structure to be opened/closed before and after return air inlet adopts, realize convective heating, novel air door structure reliability significantly improves, and has even surpass the cooling performance of conventional spout cooling vacuum stove, when keeping nozzle refrigerative advantage, increase convection heating system.Close air door during the operation heating, the heating indoor gas is closed in the heating chamber basically, makes gas produce convection flow in heating chamber by fan, improves rate of heating and homogeneity.New heating chamber structure can reduce thermosteresis, improves cooling performance again.
Description of drawings
But Fig. 1 is the structural representation of the nozzle cooling vacuum gas quenching furnace of convective heating;
Fig. 2 a is square heating chamber 4 schematic cross-sections in the air-quenching furnace;
Nozzle location in the circular heating chamber of Fig. 2 b prior art, with the workspace distance map;
Fig. 3 a is preceding air door 3 structure sectional views in body of heater;
Fig. 3 b is back air door 9 structure sectional views in body of heater;
Fig. 3 c is after wind door cylinder 7 and furnace shell sealing position enlarged view;
Embodiment
But the nozzle cooling vacuum gas quenching furnace of the convective heating that this is novel, see Fig. 1, furnace shell 11 is a right cylinder, one end is established cooling blower 10, the body of heater axially parallel is in ground, adopt robot control system(RCS), the heating chamber 4 that it is characterized in that being installed in the furnace shell is cube structure, sees Fig. 2 a, and square heating chamber is settled cooling air channel and nozzle 6 up and down all around, nozzle 6 is perpendicular to central square workspace surface, heating chamber 4 axial rear and front ends have return air inlet, and the return air inlet place has can open and close air door 3,9, the heating chamber Inner Front End is established convection fan 5, passes air door 3 and settles.Fan electromotors etc. all are contained in the furnace shell 11, no longer need sealing, air door 3 before can opening and closing, back air door 9 all adopts the switching air door structure of parallelogram, and establish separately button fly front cylinder 1, back pullout (BPO) cylinder 7, cylinder is introduced the sealing at furnace shell place and is adopted metallic bellows to do dynamic seal 12.
Automatic control system: each function executing unit part all is provided with electromagnetic component and is connected with the Controlling System circuit, and air door opens and closes, the startup of convection fan and stopping, and in the operation heating and cooling process by the Controlling System interlocked control.
Fig. 2 b is a circular heating chamber sectional view in the prior art, nozzle is arranged on circumferential inner wall in the circular heating chamber, and workspace is a square space, compare with nozzle and workpiece distance in the square heating chamber of Fig. 2 a, find out that obviously nozzle and the workpiece distance along the circumference setting is unequal in the existing installation, must produce uneven cooling draught workpiece.
Forward and backward switching air door 3,9 adopts parallel four-bar linkage among the design, is located at the outside of forward and backward return air inlet 13,14 respectively, as Fig. 3 a, and 3b, the top of parallel four connecting rods 16,17 is fixed on the motionless member, and following and air door connects together.Air door opens and closes when mobile, and air door is parallel to the forward and backward screen of heating chamber all the time, moves and almost to be perpendicular to thermal insulation layer, does not have the friction wear problem, so good reliability.The very little stroke of cylinder that opens the door, air door just can reach enough apertures.Among Fig. 3 b, parallel four connecting rods 17 of after wind door cylinder 7 are than more than 16 break-in connecting rods 15 of parallel four connecting rods of preceding air door 3, and air door 9 moves horizontally after break-in connecting rod 15 becomes the vertical shifting of after wind door cylinder 7.
The stroke that cylinder is less shown in Fig. 3 c, penetrates the cylinder seal position enlarged view that opens the door of furnace shell, and do dynamic seal with metallic bellows and gets final product at cylinder introducing furnace sealing place, has improved the reliability of equipment.As figure, the cylinder stroke is 50mm, and adopting internal diameter is the corrugated tube of Φ 48, only needs the corrugated tube of length overall 180mm to satisfy service requirements.Certainly, also can use welding bellows, length is littler, and cost is higher.
Controlling System: each function executor part is equipped with electromagnetic component in the equipment, as two positions of air door switching cylinder the magnetic travel switch is housed all, and connects with the Controlling System circuit.Whole plant adopts PLC to control automatically, and in the equipment availability process, air door opens and closes, the startup of convection fan and stopping, and the heating and cooling process is by the Controlling System interlocked control:
Work flow is set in the sequence of control: vacuum oven finds time to finish, and Controlling System self check air door closes and puts in place, can heat.Automatically start heating, recharge rare gas element, start convection fan, according to processing requirement, the speed of rotation of manual regulation convection fan and the time of forward and reverse rotation of the speed and the material of heat-up rate to 0.1Mpa.Heating schedule finishes, and stops convection fan, and stops heating, recharges rare gas element in stove fast, and the door that can break a seal simultaneously starts the blower fan cooling then.
Claims (2)
- But the nozzle cooling vacuum gas quenching furnace of 1 convective heating, the body of heater axially parallel is in ground, adopt robot control system(RCS), it is characterized in that heating chamber is a cube structure, settle cooling air channel and nozzle around the square heating chamber inwall, nozzle is perpendicular to the workspace surface, return air inlet is established at the vertical two ends of heating chamber, adopt the switching air door structure of parallelogram, and establish separately the cylinder that opens the door, move and almost to be perpendicular to thermal insulation layer, convection fan is set in the heating chamber, cylinder introduces the furnace sealing place and does dynamic seal with metallic bellows; Controlling System: each execution unit all is provided with electromagnetic component and is connected with the Controlling System circuit, and air door opens and closes, the startup of convection fan and stopping, and in the operation heating and cooling process by the Controlling System interlocked control.
- But 2, the nozzle cooling vacuum gas quenching furnace of convective heating according to claim 1, it is characterized in that forward and backward switching air door mechanism adopts parallel four connecting rods (16), (17), be located at the outside of forward and backward return air inlet (13), (14) respectively, the top of parallel four connecting rods is fixed on the motionless member, and following and air door connects together; Many break-in connecting rods in the parallel four-bar linkage of after wind door cylinder, the vertical shifting of air door becomes and moves horizontally after the break-in connecting rod makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200140736U CN201228273Y (en) | 2008-07-18 | 2008-07-18 | Nozzle cooling vacuum gas quenching furnace capable of convection heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200140736U CN201228273Y (en) | 2008-07-18 | 2008-07-18 | Nozzle cooling vacuum gas quenching furnace capable of convection heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201228273Y true CN201228273Y (en) | 2009-04-29 |
Family
ID=40633229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200140736U Expired - Lifetime CN201228273Y (en) | 2008-07-18 | 2008-07-18 | Nozzle cooling vacuum gas quenching furnace capable of convection heating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201228273Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350649A (en) * | 2016-11-08 | 2017-01-25 | 湖南顶立科技有限公司 | Isostatic pressing gas quenching equipment |
| CN114807533A (en) * | 2022-05-06 | 2022-07-29 | 北京中孚悦达真空科技有限公司 | Multifunctional vacuum high-pressure gas quenching furnace |
-
2008
- 2008-07-18 CN CNU2008200140736U patent/CN201228273Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106350649A (en) * | 2016-11-08 | 2017-01-25 | 湖南顶立科技有限公司 | Isostatic pressing gas quenching equipment |
| CN106350649B (en) * | 2016-11-08 | 2019-01-15 | 湖南顶立科技有限公司 | A kind of equal static pressure air quenching equipment |
| CN114807533A (en) * | 2022-05-06 | 2022-07-29 | 北京中孚悦达真空科技有限公司 | Multifunctional vacuum high-pressure gas quenching furnace |
| CN114807533B (en) * | 2022-05-06 | 2023-11-17 | 北京中孚悦达真空科技有限公司 | Multifunctional vacuum high-pressure gas quenching furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090429 |