CN216592717U

CN216592717U - Vacuum furnace with high heating speed

Info

Publication number: CN216592717U
Application number: CN202122793359.7U
Authority: CN
Inventors: 徐润杰; 龙斌
Original assignee: Wuxi Stanlishi New Material Co ltd
Current assignee: Wuxi Stanlishi New Material Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-05-24
Anticipated expiration: 2031-11-16

Abstract

The utility model discloses a vacuum furnace with high heating speed, relates to the technical field of vacuum furnaces, and aims to solve the problems of low heat utilization rate and low heating speed of the conventional vacuum furnace. The negative pressure steam chamber is installed to the upper end of heating furnace, the inside of heating furnace is provided with the combustion furnace chamber, the outside of combustion furnace chamber is provided with a plurality of high temperature tobacco pipes, the flue gas conveyer pipe is installed to one side of heating furnace, the auxiliary heating shell is installed in the outside of negative pressure steam chamber, install first gas homogenizing plate between flue gas conveyer pipe and the auxiliary heating shell, the second gas homogenizing plate is installed to the opposite side of auxiliary heating shell, the pipe of discharging fume is installed to one side of second gas homogenizing plate, the inboard of first gas homogenizing plate and second gas homogenizing plate all is provided with a plurality of gas homogenizing holes, the honeycomb heat accumulator is installed to the inboard of auxiliary heating shell.

Description

Vacuum furnace with high heating speed

Technical Field

The utility model relates to the technical field of vacuum furnaces, in particular to a vacuum furnace with a high heating speed.

Background

The vacuum furnace is a common industrial device, is a device for heating in a vacuum environment, and is widely applied to ceramic firing, vacuum smelting, degassing of electric vacuum parts, annealing, brazing of metal parts and the like.

However, the existing vacuum furnace has low utilization rate of heat energy and low heating speed, so the existing requirement is not met, and the vacuum furnace with high heating speed is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a vacuum furnace with high heating speed, which aims to solve the problems of low heat utilization rate and low heating speed of the existing vacuum furnace in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a vacuum furnace that rate of heating is fast, includes the heating furnace, negative pressure steam chamber is installed to the upper end of heating furnace, the inside of heating furnace is provided with combustion furnace chamber, combustion furnace chamber's the outside is provided with a plurality of high temperature tobacco pipes, flue gas conveyer pipe is installed to one side of heating furnace, the auxiliary heating shell is installed in the outside of negative pressure steam chamber, install first gas homogenizing plate between flue gas conveyer pipe and the auxiliary heating shell, the second gas homogenizing plate is installed to the opposite side of auxiliary heating shell, the pipe of discharging fume is installed to one side of second gas homogenizing plate, the inboard of first gas homogenizing plate and second gas homogenizing plate all is provided with a plurality of gas homogenizing holes, the honeycomb heat accumulator is installed to the inboard of auxiliary heating shell.

Preferably, a smoke filter is installed at the upper end of the smoke conveying pipe, and the smoke conveying pipe is fixed with the smoke filter in a sealing mode.

Preferably, the outer side of the auxiliary heating shell is provided with a heat-insulating sleeve, and the heat-insulating sleeve is connected with the auxiliary heating shell in a gluing manner.

Preferably, one side of negative pressure steam chamber is installed cold water and is advanced the pipe, the hot water exit tube is installed to the opposite side of negative pressure steam chamber, hot water exit tube and cold water advance to install the heat-transfer pipe between the pipe, and the heat-transfer pipe is located the inside of negative pressure steam chamber, and the heat-transfer pipe advances the pipe with cold water and hot water exit tube all seals fixedly.

Preferably, a burner, a temperature controller and a liquid level sensor are installed on the outer side of the heating furnace, and heating medium water is arranged in the heating furnace.

Preferably, the upper end of the negative pressure steam chamber is provided with a vacuum meter, an explosion-proof valve and a vacuum tube.

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

1. the high-temperature flue gas is filtered by the flue gas filter and then enters the auxiliary heating shell to perform auxiliary heating on the negative pressure steam chamber, the heat energy of the high-temperature flue gas is fully utilized for secondary heating, and the heated flue gas is discharged through the smoke discharge pipe, so that the utilization rate of the heat energy of the vacuum furnace is improved, and the heating speed of the vacuum furnace is increased;

2. the honeycomb heat accumulator pore passage is of a parallel straight passage structure, so that the resistance of air holes flowing through is reduced, the single-pore volume heat exchange efficiency of the heat accumulator is greatly improved, the utilization rate of high-temperature flue gas heat energy is improved, the heat conduction performance is good, and the heating speed of the vacuum furnace is further improved;

3. the heat-insulating sleeve plays a role in heat insulation, effectively reduces heat loss, and further improves the utilization rate of heat energy.

Drawings

FIG. 1 is a schematic structural view of a vacuum furnace with a fast heating rate according to the present invention.

Fig. 2 is a schematic structural view of an auxiliary heating housing according to the present invention.

Fig. 3 is a schematic structural diagram of a first gas distribution plate and a second gas distribution plate of the present invention.

In the figure: 1. heating furnace; 2. a negative pressure steam chamber; 3. a combustion furnace chamber; 4. a high temperature flue tube; 5. a flue gas conveying pipe; 6. an auxiliary heating housing; 7. a first gas-homogenizing plate; 8. a second gas-homogenizing plate; 9. a smoke exhaust pipe; 10. a honeycomb heat accumulator; 11. a flue gas filter; 12. a heat insulation sleeve; 13. air homogenizing holes; 14. a cold water inlet pipe; 15. a hot water outlet pipe; 16. a vacuum tube; 17. a heat transfer tube; 18. a burner; 19. heating medium water; 20. a temperature controller; 21. a liquid level sensor; 22. a vacuum gauge; 23. an explosion-proof valve.

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.

Referring to fig. 1-3, an embodiment of the present invention is shown: a vacuum furnace with high heating speed comprises a heating furnace 1, a negative pressure steam chamber 2 is installed at the upper end of the heating furnace 1, a combustion furnace chamber 3 is arranged inside the heating furnace 1, a plurality of high-temperature smoke tubes 4 are arranged outside the combustion furnace chamber 3, a smoke conveying pipe 5 is installed at one side of the heating furnace 1, an auxiliary heating shell 6 is installed outside the negative pressure steam chamber 2, a first gas homogenizing plate 7 is installed between the smoke conveying pipe 5 and the auxiliary heating shell 6, a second gas homogenizing plate 8 is installed at the other side of the auxiliary heating shell 6, a smoke discharging pipe 9 is installed at one side of the second gas homogenizing plate 8, high-temperature smoke during fuel combustion enters the high-temperature smoke tubes 4 and is collected by the smoke conveying pipe 5, the high-temperature smoke filters dust particles through a smoke filter 11 and then enters the inside of the auxiliary heating shell 6 through the first gas homogenizing plate 7, and the heat of the high-temperature smoke is absorbed by a honeycomb heat accumulator 10, flue gas after the heat transfer is discharged through a smoke discharge pipe 9, an auxiliary heating shell 6 carries out auxiliary heating on a negative pressure steam chamber 2, the inner sides of a first gas homogenizing plate 7 and a second gas homogenizing plate 8 are provided with a plurality of gas homogenizing holes 13, a honeycomb heat accumulator 10 is installed on the inner side of the auxiliary heating shell 6, and a hole channel of the honeycomb heat accumulator 10 is a straight channel structure parallel to each other, so that the resistance of gas hole flowing through is reduced, the single-hole volume heat exchange efficiency of the honeycomb heat accumulator 10 is greatly improved, and the utilization rate of high-temperature flue gas heat energy is improved.

Further, smoke filter 11 is installed to the upper end of flue gas conveyer pipe 5, and flue gas conveyer pipe 5 is sealed fixed with smoke filter 11, and smoke filter 11 can filter the high temperature flue gas, and the filtering dust granule.

Further, the outside of the auxiliary heating shell 6 is provided with a heat preservation and insulation sleeve 12, the heat preservation and insulation sleeve 12 is connected with the auxiliary heating shell 6 in a gluing mode, the heat preservation and insulation sleeve 12 plays a role in heat preservation and insulation, heat dissipation is effectively reduced, and the utilization rate of heat energy is further improved.

Further, a cold water inlet pipe 14 is installed on one side of the negative pressure steam chamber 2, a hot water outlet pipe 15 is installed on the other side of the negative pressure steam chamber 2, a heat transfer pipe 17 is installed between the hot water outlet pipe 15 and the cold water inlet pipe 14, the heat transfer pipe 17 is located inside the negative pressure steam chamber 2, the heat transfer pipe 17 and the cold water inlet pipe 14 and the hot water outlet pipe 15 are fixed in a sealing mode, and cold water inlet and hot water outlet are achieved.

Furthermore, a burner 18, a temperature controller 20 and a liquid level sensor 21 are installed on the outer side of the heating furnace 1, and a heat medium 19 is arranged in the heating furnace 1, so that the temperature and the liquid level of the heat medium 19 can be controlled.

Further, a vacuum gauge 22, an explosion-proof valve 23 and a vacuum tube 16 are installed at the upper end of the negative pressure steam chamber 2, so that a safe negative pressure environment can be maintained.

The working principle is as follows: when the heat-exchange type heat-exchange device is used, heat released by fuel combustion is absorbed by the heat medium water 19, when the temperature rises to the saturation temperature in a certain vacuum state, the heat-exchange type heat-exchange device is evaporated into saturated steam and completes the first phase-change process, condensed water flows into the evaporation chamber to continue absorbing heat, phase-change circulation is completed, the negative pressure steam chamber 2 is externally connected with the vacuum tube 16 air extraction unit, the negative pressure steam chamber 2 keeps stable vacuum degree, non-condensed gas in the negative pressure steam chamber 2 is extracted out, heat exchange is realized, high-temperature flue gas during fuel combustion enters the inside of the high-temperature flue tube 4 and is collected by the flue gas conveying tube 5, the high-temperature flue gas filters dust particles through the flue gas filter 11 and enters the inside of the auxiliary heating shell 6 through the first gas homogenizing plate 7, the heat of the high-temperature flue gas is absorbed by the honeycomb heat accumulator 10, the flue gas after heat exchange is discharged through the smoke exhaust tube 9, and the auxiliary heating shell 6 performs auxiliary heating on the negative pressure steam chamber 2, the heat energy of the high-temperature flue gas is fully utilized for secondary heating, the pore channel of the honeycomb heat accumulator 10 is a straight channel structure which is parallel to each other, so that the resistance of air hole flowing through is reduced, the single-pore volume heat exchange efficiency of the honeycomb heat accumulator 10 is greatly improved, the utilization rate of the heat energy of the high-temperature flue gas is improved, the heat-insulating sleeve 12 plays a role in heat preservation and heat insulation, the heat loss is effectively reduced, and the utilization rate of the heat energy is further improved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a vacuum furnace that rate of heating is fast, includes heating furnace (1), its characterized in that: the upper end of the heating furnace (1) is provided with a negative pressure steam chamber (2), a combustion furnace chamber (3) is arranged in the heating furnace (1), a plurality of high-temperature smoke pipes (4) are arranged on the outer side of the combustion furnace chamber (3), a smoke conveying pipe (5) is arranged on one side of the heating furnace (1), an auxiliary heating shell (6) is arranged at the outer side of the negative pressure steam chamber (2), a first gas homogenizing plate (7) is arranged between the flue gas conveying pipe (5) and the auxiliary heating shell (6), the other side of the auxiliary heating shell (6) is provided with a second gas-homogenizing plate (8), a smoke exhaust pipe (9) is arranged on one side of the second gas homogenizing plate (8), a plurality of gas homogenizing holes (13) are arranged on the inner sides of the first gas homogenizing plate (7) and the second gas homogenizing plate (8), and a honeycomb heat accumulator (10) is arranged on the inner side of the auxiliary heating shell (6).

2. The vacuum furnace with high heating speed according to claim 1, characterized in that: flue gas filter (11) are installed to the upper end of flue gas conveyer pipe (5), and flue gas conveyer pipe (5) and flue gas filter (11) are sealed fixed.

3. The vacuum furnace with high heating speed according to claim 1, characterized in that: the outer side of the auxiliary heating shell (6) is provided with a heat-insulating sleeve (12), and the heat-insulating sleeve (12) is connected with the auxiliary heating shell (6) in a bonding manner.

4. The vacuum furnace with high heating speed according to claim 1, characterized in that: one side of negative pressure steam chamber (2) is installed cold water and is advanced pipe (14), hot water exit tube (15) are installed to the opposite side of negative pressure steam chamber (2), hot water exit tube (15) and cold water advance to install between pipe (14) heat-transfer tube (17), and heat-transfer tube (17) are located the inside of negative pressure steam chamber (2), and heat-transfer tube (17) advance pipe (14) and hot water exit tube (15) with cold water and all seal fixedly.

5. The vacuum furnace with high heating speed according to claim 1, characterized in that: the heating furnace is characterized in that a burner (18), a temperature controller (20) and a liquid level sensor (21) are installed on the outer side of the heating furnace (1), and heating medium water (19) is arranged in the heating furnace (1).

6. The vacuum furnace with high heating speed according to claim 1, characterized in that: and a vacuum meter (22), an explosion-proof valve (23) and a vacuum tube (16) are installed at the upper end of the negative pressure steam chamber (2).