CN215887136U

CN215887136U - Nozzle of vacuum gas quenching furnace

Info

Publication number: CN215887136U
Application number: CN202122148496.5U
Authority: CN
Inventors: 杨帆; 卢永军
Original assignee: Beijing Zhongfu Yueda Vacuum Technology Co ltd
Current assignee: Beijing Zhongfu Yueda Vacuum Technology Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-02-22
Anticipated expiration: 2031-09-07

Abstract

The utility model discloses a nozzle of a vacuum gas quenching furnace, which comprises a jacketed furnace body and furnace legs fixedly connected to the lower surface of the jacketed furnace body, wherein a motor is fixedly connected in a motor cover, the motor is fixedly connected with an impeller through an output shaft, a heat exchanger opposite to the impeller is fixedly connected on the inner wall of the jacketed furnace body, a heat-insulating layer is fixedly connected in the jacketed furnace body, a plurality of groups of air guide pipes are fixedly connected between the jacketed furnace body and the heat-insulating layer, a threaded hole is formed in the heat-insulating layer, a plurality of groups of nozzles are screwed through the threaded hole, a first through hole for guiding air is formed in each group of nozzles, a wind curtain seat is screwed on one side in each group of nozzle positions and the heat-insulating layer, a rotating rod is rotatably connected on the wind curtain seat, a wind curtain matched with the wind curtain is fixedly connected on the rotating rod, and a wind curtain groove matched with the wind curtain is formed on the wind curtain seat, the utility model achieves the purpose of preventing heat loss outwards through the matching of an integral structure, thereby realizing the effect of rapidly and uniformly cooling the workpiece.

Description

Nozzle of vacuum gas quenching furnace

Technical Field

The utility model relates to the technical field of nozzles, in particular to a nozzle of a vacuum gas quenching furnace.

Background

The nozzle of the vacuum high-pressure gas quenching furnace is an important part in the whole gas quenching process, the air flow driven by the fan is blown to a workpiece in the heating chamber by the nozzle to realize rapid cooling, and the structure and the type of the nozzle play a light role in the gas quenching effect.

The existing vacuum furnace air nozzle is directly fastened with an air nozzle seat on an air guide pipe (between the outer wall of a heating chamber and the inner wall of a furnace body) by screw threads, although the structure is simple, the air nozzle is directly communicated with the air guide pipe without shielding, and the vacuum furnace air nozzle has the following defects:

1. when the vacuum radiation heating is carried out, partial heat can be lost outwards from the inner hole of the nozzle, so that a large amount of energy is lost, and the vacuum radiation heating device does not have the characteristics of energy conservation and environmental protection.

2. When the low-pressure convection heating is carried out, under the action of the convection fan, a large amount of heat reversely flows to the heat exchanger from the nozzle through the air guide pipe, the heating speed is reduced, the power consumption is increased, meanwhile, the fan and related structural parts are influenced by high temperature to deform, and the service life of the related parts is shortened.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a nozzle of a vacuum gas quenching furnace, which has the advantages of energy conservation, environmental protection and easy replacement and maintenance, and solves the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a nozzle of a vacuum gas quenching furnace comprises a shell, wherein a heat insulation plate is fixedly connected in the shell, the shell is divided into a wind guide cavity and a working cavity by the heat insulation plate, a threaded hole is formed in the heat insulation plate, the nozzle is connected with the heat insulation plate in a threaded manner through a threaded hole, a first through hole for air inlet is formed in the nozzle, a nozzle seat is fixedly connected to one end, close to the wind guide cavity, of the heat insulation plate, a second through hole for air inlet is formed in the nozzle seat, a threaded hole is formed in one end, close to the heat insulation plate, of the second through hole, the second through hole is in threaded connection with the nozzle in a threaded manner through a threaded hole, a back nut is connected with the nozzle in a threaded manner, one side, away from the heat insulation plate, of the back nut is attached to a wind curtain seat, a threaded hole is formed in the wind curtain seat, a wind curtain is fixedly connected to the rotating rod, and a wind curtain groove matched with the wind curtain is formed in the wind curtain seat, a ventilation mechanism used for ventilating the air guide cavity is arranged in the shell.

Preferably, ventilation mechanism is including the motor frame of fixed connection on shells inner wall, fixedly connected with motor on the motor frame, the output fixedly connected with axis of rotation of motor, fixedly connected with fan on the arc profile of axis of rotation.

Preferably, a heat exchanger is fixedly connected to the inner wall of the housing, and the heat exchanger is located right opposite to the fan.

Preferably, the nozzle is screwed with a locking nut, and the locking nut is attached to the inner wall of the heat insulation plate.

Preferably, one side of the shell, which is far away from the motor, is rotatably connected with a furnace door through a pin shaft, and the furnace door is fixedly connected with a door handle.

Preferably, the nozzle seat is provided with an inclined plane convenient for air intake, and the inclined plane is opposite to one side of the motor.

Compared with the prior art, the utility model has the following beneficial effects:

1. according to the utility model, through the cooperation of the integral structure, when the vacuum radiation heating or the low-pressure convection heating is realized, the outward loss of heat is prevented, the power consumption is reduced, the electricity and the energy are saved, the operation cost is reduced, and the parts outside the working cavity are not easy to be heated and deformed due to the fact that the heat is prevented from escaping outwards, and the service life is long, so that the maintenance cost is reduced; when the high-pressure gas quenching device is used for high-pressure gas quenching, the air curtain is rushed to an opening state under the action of high-pressure high-flow-rate air flow, so that air is introduced into the working cavity from the first through hole, and the effect of quickly and uniformly cooling the workpiece is achieved.

2. According to the utility model, the heat insulation plate, the nozzle seat, the locking nut, the back nut, the air curtain seat and the nozzle are in threaded connection, so that the effects of convenient disassembly and easy replacement of the nozzle, the locking nut, the back nut and the air curtain seat are achieved.

Drawings

FIG. 1 is a schematic external view of a nozzle structure according to the present invention;

FIG. 2 is an exploded view of the nozzle structure of the present invention;

FIG. 3 is a schematic cross-sectional view of a nozzle structure according to the present invention;

FIG. 4 is a schematic sectional view of a jacketed furnace body structure according to the present invention;

FIG. 5 is an external view of the jacketed furnace body structure of the present invention.

In the figure: 1. a jacketed furnace body; 11. furnace legs; 12. a thermal insulation layer; 121. an air guide pipe; 13. a nozzle base; 131. a second through hole; 14. locking a nut; 15. a nozzle; 151. a first through hole; 16. carrying out female backing; 17. a wind curtain seat; 18. an air curtain; 181. rotating the rod; 182. a wind curtain groove; 2. a motor; 21. a motor cover; 22. an impeller; 3. an air extraction opening; 4. a heat exchanger.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a technical scheme that: a nozzle of a vacuum gas quenching furnace comprises a jacketed furnace body 1 and furnace legs 11 fixedly connected to the lower surface of the jacketed furnace body 1, wherein an air suction port 3 is fixedly communicated with the upper surface of the jacketed furnace body 1, a motor cover 21 is fixedly connected to the jacketed furnace body 1, a motor 2 is fixedly connected to the inside of the motor cover 21, an impeller 22 is fixedly connected to the motor 2 through an output shaft, a heat exchanger 4 opposite to the impeller 22 is fixedly connected to the inner wall of the jacketed furnace body 1, a heat insulation layer 12 is fixedly connected to the inside of the jacketed furnace body 1, a plurality of groups of air guide pipes 121 are fixedly connected between the jacketed furnace body 1 and the heat insulation layer 12, a plurality of groups of nozzles 15 are screwed on the heat insulation layer 12 through threaded holes, a first through hole 151 for guiding air is respectively arranged on each group of nozzles 15, a wind curtain seat 17 is screwed on one side of each group of nozzles 15 and the heat insulation layer 12, and a rotating rod 181 is rotatably connected to the wind curtain seat 17, the rotating rod 181 is fixedly connected with the air curtain 18, and the air curtain seat 17 is provided with an air curtain groove 182 matched with the air curtain 18.

Referring to fig. 1, 2, 3, 4 and 5, the effect of supporting the jacket-type furnace body 1 is achieved by arranging the furnace legs 11, the effect of driving the impeller 22 by the motor 2 through the output shaft is achieved by arranging the motor cover 21 and the motor 2, the effect of sending the gas from the air suction port 3 into the air guide pipe 121 is achieved, the effect of uniformly cooling the workpiece is achieved by arranging the heat exchanger 4 to exchange the gas entering from the air guide pipe 121 through the nozzle 15 with the hot workpiece, the gas is heated and enters the heat exchanger 4 through the rear air port to exchange heat again and then becomes cold, then the gas is sent into the air guide pipe 121 by the impeller 22 to enter the next circulation, the effect of uniformly cooling the workpiece is achieved by arranging the nozzle 15 to enter the first through hole 151, the effect of conveniently detaching the nozzle 15 is achieved by arranging the threaded hole formed in the heat insulation layer 12 and screwing the nozzle 15 through the threaded hole, and the rotating rod 181 and the air curtain 18 are arranged to achieve the effect of vacuum radiation heating or low-pressure convection heating, the air curtain 18 is closed under the action of gravity or internal airflow, the cooperation with the air curtain groove 182 is realized, so that air is stopped at the first through hole 151, heat outward loss is prevented, the power consumption is reduced, the electricity and the energy are saved, the operation cost is reduced, meanwhile, the heat is prevented from escaping outwards, the workpiece outside the heat insulation layer 12 is not prone to thermal deformation, the service life is long, the maintenance cost is reduced, when the high-pressure air quenching is performed, the air curtain 18 is flushed to an open state under the action of high-pressure high-flow-rate airflow, so that the air is introduced into the heat insulation layer 12 from the first through hole 151, and the effect of quickly and uniformly cooling the workpiece is realized.

Furthermore, one side of each group of air guide pipes 121 close to the heat insulation layer 12 is fixedly connected with a plurality of groups of nozzle seats 13, and each group of nozzle seats 13 is provided with a second through hole 131 for air intake.

Referring to fig. 1, 2 and 3, the nozzle base 13 is arranged to allow air to enter the second through hole 131 from the air guide pipe 121.

Furthermore, a threaded hole is formed in one end, close to the heat insulation layer 12, of the second through hole 131, and the second through hole is in threaded connection with the nozzle 15 through the threaded hole.

Referring to fig. 1, 2 and 3, a threaded hole is formed in one end of the second through hole 131 close to the heat insulation layer 12, and the threaded hole is in threaded connection with the nozzle 15, so that wind enters the first through hole 151 from the second through hole 131, and the nozzle 15 is convenient to detach.

Furthermore, a locking nut 14 is screwed on the nozzle 15, and the locking nut 14 is attached to the inner wall of the heat insulation layer 12.

Referring to fig. 1, 2 and 3, after the nozzle 15, the nozzle seat 13 and the thermal insulation layer 12 are screwed tightly by arranging the locking nut 14, the locking nut 14 is screwed, so that the locking nut 14 is attached to the thermal insulation layer 12, and the effect of further fixing the nozzle 15 is achieved.

Furthermore, a back nut 16 is screwed on the nozzle 15, and one side of the back nut 16 far away from the heat insulation layer 12 is attached to the air curtain seat 17.

Referring to fig. 1, 2 and 3, the back nut 16 is arranged to further fix the wind curtain seat 17 by screwing the back nut 16 until the back nut is attached to the wind curtain seat 17 after the wind curtain seat 17 is screwed.

Furthermore, the nozzle base 13 is provided with an inclined plane convenient for wind guiding, and the inclined plane is opposite to the heat exchanger 4.

Referring to fig. 1, 2 and 3, the nozzle base 13 is provided with an inclined plane for facilitating air intake to achieve the effect of fast cooling the workpiece.

The working principle is as follows: when this kind of vacuum gas quenching stove nozzle uses, screw up nozzle 15 through the screw hole of insulating layer 12 and nozzle seat 13, screw up lock mother 14 on nozzle 15 afterwards, realize further fixing nozzle 15, screw up air curtain seat 17 on nozzle 15 afterwards, screw up back of the body mother 16 on nozzle 15 afterwards, realize further fixing air curtain seat 17.

The motor 2 is started, the output shaft drives the impeller 22, the gas coming from the air suction opening 3 is sent into the air guide pipe 121, the air in the air guide pipe 121 enters the second through hole 131 through the nozzle seat 13 and then enters the first through hole 151, when vacuum radiation heating or low-pressure convection heating is performed, the air curtain 18 is closed under the action of gravity or internal airflow, the air curtain 18 is matched with the air curtain groove 182, the air is made to stay in the first through hole 151, the outward loss of heat is prevented, the power consumption is reduced, the electricity and energy are saved, the operation cost is reduced, meanwhile, because the heat is prevented from escaping outwards, parts outside the heat insulation layer 12 are not easy to be heated and deformed, the service life is long, the maintenance cost is reduced, when a workpiece needs high-pressure air quenching, under the action of high-pressure high-flow-rate airflow, the air curtain 18 is flushed to an open state, the air is led into the heat insulation layer 12 from the first through hole 151, and the workpiece is cooled, at the moment, the gas exchanges heat with the hot workpiece, the gas is heated and enters the heat exchanger 4 through the rear air inlet to exchange heat again to be changed into a cold state, and then the gas is sent into the air guide pipe 121 through the impeller 22 to enter the next cycle, so that the effect of further uniformly cooling the workpiece is achieved.

Because threaded holes are formed in the heat insulation layer 12 and the second through hole 131, the spray nozzle 15 is in threaded connection with the spray nozzle 15 through the threaded holes, the spray nozzle 15 is convenient to detach, the locking nut 14 and the back nut 16 are convenient to detach because the locking nut 14 and the back nut 16 are in threaded connection with the spray nozzle 15, and the air curtain seat 17 is convenient to detach and easy to replace because the air curtain seat 17 is in threaded connection with the spray nozzle 15.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a vacuum gas quenching furnace nozzle, includes jacketed furnace body (1) and fixed connection stove leg (11) at jacketed furnace body (1) lower surface, the fixed surface intercommunication has extraction opening (3) on jacketed furnace body (1), fixedly connected with motor cover (21) on jacketed furnace body (1), fixedly connected with motor (2) in motor cover (21), motor (2) are through output shaft fixedly connected with impeller (22), fixedly connected with heat exchanger (4) relative with impeller (22) on the inner wall of jacketed furnace body (1), fixedly connected with insulating layer (12) in jacketed furnace body (1), just fixedly connected with multiunit guide duct (121), its characterized in that between jacketed furnace body (1) and insulating layer (12): the utility model discloses a wind curtain, including insulating layer (12), insulating layer (12) go up set up threaded hole and have multiunit nozzle (15), every group all offer first through-hole (151) that are used for the wind-guiding on nozzle (15), every group equal spiro union in nozzle (15) position and insulating layer (12) has curtain seat (17), it is connected with dwang (181) to rotate on curtain seat (17), fixedly connected with curtain (18) on dwang (181), set up on curtain seat (17) with curtain (18) complex curtain groove (182).

2. The nozzle of the vacuum gas quenching furnace as claimed in claim 1, wherein: one side of each air guide pipe (121) close to the heat insulation layer (12) is fixedly connected with a plurality of groups of nozzle seats (13), and each group of nozzle seats (13) is provided with a second through hole (131) for air inlet.

3. The nozzle of the vacuum gas quenching furnace as claimed in claim 2, wherein: one end of the second through hole (131) close to the heat insulation layer (12) is provided with a threaded hole and is in threaded connection with the nozzle (15) through the threaded hole.

4. The nozzle of the vacuum gas quenching furnace as claimed in claim 1, wherein: the spray nozzle (15) is screwed with a lock nut (14), and the lock nut (14) is attached to the inner wall of the heat insulation layer (12).

5. The nozzle of the vacuum gas quenching furnace as claimed in claim 1, wherein: the spray nozzle (15) is connected with a back nut (16) in a threaded mode, and one side, far away from the heat insulation layer (12), of the back nut (16) is attached to the air curtain seat (17).

6. The nozzle of the vacuum gas quenching furnace as claimed in claim 1, wherein: the nozzle seat (13) is provided with an inclined plane convenient for wind guide, and the inclined plane is opposite to the heat exchanger (4).