CN211199312U

CN211199312U - Heat treatment furnace

Info

Publication number: CN211199312U
Application number: CN201921337344.6U
Authority: CN
Inventors: 付健
Original assignee: Guizhou Huasente Machinery Parts Co ltd
Current assignee: Guizhou Huasente Machinery Parts Co ltd
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2020-08-07
Anticipated expiration: 2029-08-16

Abstract

The utility model relates to the technical field of heat treatment equipment, and discloses a heat treatment furnace, which comprises a vacuum furnace, an air extraction element, a heating element and a base; the vacuum furnace comprises an inner wall, an outer wall and an interlayer formed by sealing and connecting the inner wall and the outer wall; the outer wall is provided with a medium pipe used for flowing the medium into the interlayer and a circulating pipe used for circulating the medium in the interlayer, and the circulating pipe is provided with a circulating device used for driving the medium to circulate. When the preheating furnace is used, the furnace tank is preheated in advance by introducing the medium with heat into the interlayer, the circulating device and the circulating pipe which are arranged in a matching way drive the medium to flow in the furnace wall, the heating efficiency and speed of the furnace tank are improved by matching with the heating element, the heat loss is reduced, the energy is fully utilized, and the waste is reduced.

Description

Heat treatment furnace

Technical Field

The utility model relates to the technical field of heat treatment equipment, in particular to a heat treatment furnace.

Background

The vacuum heat treatment technology is an advanced technology for material modification, namely, the heat treatment such as normalizing, annealing, heat treatment, tempering and the like is carried out on a to-be-added mould in a vacuum environment, the vacuum heat treatment technology has the advantages of no oxidation, no decarburization, degreasing, degassing, energy conservation, cleanness, no pollution, no public hazard, high automation degree and the like, and the material after vacuum heat treatment has the advantages of good surface weight, small deformation, excellent comprehensive performance, long service life and high precision, so that the vacuum heat treatment technology becomes a hotspot for international development.

However, the traditional external heating type vacuum furnace has the advantages of large heat inertia of the furnace tank, low heating efficiency and low speed because the heat source is arranged outside the furnace tank.

SUMMERY OF THE UTILITY MODEL

The utility model mainly provides a heat treatment furnace, which solves the problems of large thermal inertia, low heating efficiency and low speed of the furnace tank in the prior art.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a heat treatment furnace comprises a vacuum furnace, an air extraction element arranged on the vacuum furnace, a heating element arranged outside the vacuum furnace and used for heating the vacuum furnace, and a base arranged below the vacuum furnace; the vacuum furnace comprises an inner wall, an outer wall and an interlayer formed by sealing and connecting the inner wall and the outer wall; the outer wall is provided with a medium pipe used for flowing media into the interlayer and a circulating pipe used for circulating the media in the interlayer, and the circulating pipe is provided with a circulating device used for driving the media to circulate. The heat treatment furnace can adopt any external heating type vacuum heat treatment furnace in the prior art, and the medium refers to water, heat conduction oil, cooling liquid and the like capable of conducting and absorbing heat, so that the effects of cooling, heating and keeping constant temperature are achieved. According to the scheme, the furnace wall of the traditional external heating type vacuum heat treatment furnace is replaced by the interlayer of the furnace wall of the vacuum furnace formed by sealing and connecting the inner wall and the outer wall, when the furnace is used, the furnace tank is preheated in advance by introducing a medium with heat into the interlayer, meanwhile, the circulating device and the circulating pipe which are arranged in a matching way drive the medium to flow in the furnace wall, and the heating efficiency and speed of the furnace tank are improved by matching with the heating element; one part of traditional stove jar exposes in the atmosphere, and the heat loss is big, and this scheme is after heating to certain temperature, and the temperature in medium and the vacuum furnace keeps unanimous to at the intermediate layer inner loop, keep the temperature balance of each position of vacuum furnace in real time, reduce heat loss, let in the medium in the intermediate layer simultaneously, can also utilize the medium to come to receive the furnace chamber waste heat, the make full use of energy reduces extravagantly.

Further, a heat insulation layer is arranged outside the outer wall. A part of the traditional furnace tank is exposed in the atmosphere, the heat loss is large, and the heat insulation layer is arranged outside the outer wall, so that the heat insulation efficiency of the vacuum furnace can be improved, and the heat loss is reduced.

Further, an air guide channel for communicating the oven cavity with a special air device is arranged in the base. The special gas device refers to a device containing a gas cooling medium such as hydrogen, nitrogen, argon and the like. Not only can the cooling rate in intermediate layer inner loop medium acceleration furnace chamber in this scheme, also can let in special gas through inert gas device and air duct in to the furnace chamber and cool off, also can go on simultaneously for cooling efficiency.

Further, the vacuum furnace comprises a temperature sensor which is arranged in a furnace chamber of the vacuum furnace and is used for measuring temperature. The temperature in the furnace cavity can be known in real time through the temperature sensor, so that the temperature can be observed and controlled conveniently.

Further, the circulating device is a circulating pump. The circulating pump has the advantages of no water leakage, low noise, long service life, small volume and the like.

Has the advantages that: according to the scheme, the furnace wall of the traditional external heating type vacuum heat treatment furnace is replaced by the interlayer of the furnace wall of the vacuum furnace formed by sealing and connecting the inner wall and the outer wall, when the furnace is used, the furnace tank is preheated in advance by introducing a medium with heat into the interlayer, meanwhile, the circulating device and the circulating pipe which are arranged in a matching way drive the medium to flow in the furnace wall, and the heating efficiency and speed of the furnace tank are improved by matching with the heating element; one part of traditional stove jar exposes in the atmosphere, and the heat loss is big, and this scheme is after heating to certain temperature, and the temperature in medium and the vacuum furnace keeps unanimous to at the intermediate layer inner loop, keep the temperature balance of each position of vacuum furnace in real time, reduce heat loss, let in the medium in the intermediate layer simultaneously, can also utilize the medium to come to receive the furnace chamber waste heat, the make full use of energy reduces extravagantly.

Drawings

FIG. 1 is a schematic view of a heat treatment furnace according to an embodiment;

reference numerals: 1. the device comprises an air extracting element, a base 2, an inner wall 3, an outer wall 4, a medium pipe 5, a circulating pipe 6, a circulating pump 7, a special gas device 8, a gas guide channel 9 and a temperature sensor 10.

Detailed Description

The technical scheme of the heat treatment furnace according to the present invention will be further described in detail with reference to the following examples.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The first embodiment is as follows: as shown in fig. 1, a heat treatment furnace of the present embodiment includes a vacuum furnace, an air extracting element 1 disposed on the vacuum furnace, a heating element disposed outside the vacuum furnace for heating the vacuum furnace, and a base 2 disposed under the vacuum furnace; the vacuum furnace comprises an inner wall 3, an outer wall 4 and an interlayer formed by hermetically connecting the inner wall 3 and the outer wall 4; meanwhile, the outer wall 4 is provided with a medium pipe 5 for flowing a medium into the interlayer and a circulating pipe 6 for circulating the medium in the interlayer, and the circulating pipe 6 is provided with a circulating device for driving the medium to circulate, wherein the circulating device is a circulating pump 7. And a heat insulation layer is arranged outside the outer wall 4. And a gas guide channel for communicating the furnace chamber with a special gas device 8 is arranged in the base 2. The solution further comprises a temperature sensor 10 arranged in the cavity of the vacuum furnace for measuring the temperature. The heat treatment furnace can adopt any external heating type vacuum heat treatment furnace in the prior art, and the medium refers to water, heat conduction oil, cooling liquid and the like capable of conducting and absorbing heat, so that the effects of cooling, heating and keeping constant temperature are achieved. According to the scheme, the furnace wall of the traditional external heating type vacuum heat treatment furnace is replaced by the interlayer of the furnace wall of the vacuum furnace formed by hermetically connecting the inner wall 3 and the outer wall 4, when the furnace is used, the furnace tank is preheated in advance by introducing different media into the interlayer, meanwhile, the circulating device and the circulating pipe 6 which are arranged in a matching way drive the media to flow in the furnace wall, and the heating efficiency and speed of the furnace tank are improved by matching with the heating element; one part of traditional stove jar exposes in the atmosphere, and the heat loss is big, and this scheme is after heating to certain temperature, and the temperature in medium and the vacuum furnace keeps unanimous to at the intermediate layer inner loop, keep the temperature balance of each position of vacuum furnace in real time, reduce heat loss, let in the medium in the intermediate layer simultaneously, can also utilize the medium to come to receive the furnace chamber waste heat, the make full use of energy reduces extravagantly.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A heat treatment furnace is characterized in that: comprises a vacuum furnace, an air extraction element arranged on the vacuum furnace, a heating element arranged outside the vacuum furnace and used for heating the vacuum furnace, and a base arranged below the vacuum furnace; the vacuum furnace comprises an inner wall, an outer wall and an interlayer formed by sealing and connecting the inner wall and the outer wall; the outer wall is provided with a medium pipe used for flowing media into the interlayer and a circulating pipe used for circulating the media in the interlayer, a circulating device used for driving the media to circulate is installed on the circulating pipe, a heat insulation layer is arranged outside the outer wall, and an air guide channel used for communicating the furnace chamber with a special gas device is arranged in the base.

2. The heat treatment furnace according to claim 1, wherein: comprises a temperature sensor which is arranged in a furnace chamber of the vacuum furnace and is used for measuring temperature.

3. The heat treatment furnace according to claim 1, wherein: the circulating device is a circulating pump.