CN210215463U

CN210215463U - Multifunctional vacuum tempering furnace

Info

Publication number: CN210215463U
Application number: CN201920816061.3U
Authority: CN
Inventors: Chengjun Zhao; 赵成军
Original assignee: Chuzhou Huahai Zhongyi Industrial Furnace Co Ltd
Current assignee: Chuzhou Huahai Zhongyi Industrial Furnace Co Ltd
Priority date: 2019-06-01
Filing date: 2019-06-01
Publication date: 2020-03-31
Anticipated expiration: 2029-06-01

Abstract

The utility model discloses a multi-functional vacuum tempering furnace, including outer furnace body, nitrogen gas jar and interior furnace body, the inner chamber lateral wall of interior furnace body is provided with electric heating element, the top of outer furnace body is provided with the motor, the bottom power output end of motor is provided with the axis of rotation, the inner chamber one end outer wall that the axis of rotation stretched into interior furnace body is provided with the fan, the top left side of interior furnace body is provided with first pipeline, the top right side of outer furnace body is provided with the vacuum pump, the left side inlet end of vacuum pump is provided with the second pipeline, and the bottom of second pipeline stretches into the inner chamber of interior furnace body, the right side end of giving vent to anger of vacuum pump is provided with the third pipeline, the one end that the vacuum pump was kept away from to. The utility model discloses can carry out vacuum tempering to metal workpiece to the tempering furnace restriction to the air composition in the stove around heating again guarantees that metal workpiece surface does not receive the pollution, is fit for the tempering of accurate work piece and handles.

Description

Multifunctional vacuum tempering furnace

Technical Field

The utility model relates to a tempering equipment technical field, in particular to multi-functional vacuum tempering furnace.

Background

Tempering is a metal heat treatment process in which a quenched workpiece is reheated to a suitable temperature, kept warm for a period of time, and then cooled in a medium such as air, water, or oil, and is generally used to reduce or eliminate internal stress in the quenched steel, reduce hardness and strength, and improve ductility or toughness thereof. The method for tempering the metal workpiece by using the vacuum tempering furnace has the advantages of no oxidation, no decarburization, bright surface, no corrosion pollution and the like, but in the process of rapidly cooling after tempering and heating, the traditional tempering furnace cooling mode can cause the pollution on the metal surface, and the cooling speed is slow, so that the multifunctional vacuum tempering furnace is provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a multi-functional vacuum tempering furnace, main aim at can carry out vacuum tempering to metal workpiece and handle to can restrict the air composition in the stove around the tempering furnace heating again, guarantee that metal workpiece surface does not receive the pollution, be fit for the tempering of accurate work piece and handle.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a multifunctional vacuum tempering furnace comprises an outer furnace body, a nitrogen tank and an inner furnace body, wherein the inner furnace body is positioned in an inner cavity of the outer furnace body, an electric heating element is arranged on the inner cavity side wall of the inner furnace body, a motor is arranged at the top of the outer furnace body, a bottom power output end of the motor is provided with a rotating shaft, the bottom of the rotating shaft extends into the inner cavity of the inner furnace body, a fan is arranged on the outer wall of one end, extending into the inner cavity of the inner furnace body, of the rotating shaft, a first pipeline is arranged on the left side of the top of the inner furnace body and communicated with the bottom air outlet end of the nitrogen tank, a vacuum pump is arranged on the right side of the top of the outer furnace body, a second pipeline is arranged at the left air inlet end of the vacuum pump, the bottom of the second pipeline extends into the inner cavity of the inner furnace body, a third pipeline is arranged at the right air, the gas outlet end of the three-way valve is provided with a fourth pipeline and a fifth pipeline, and the gas outlet end of the fourth pipeline is communicated with the gas inlet end of the top of the nitrogen tank.

Preferably, the first pipeline is provided with a first gas valve for controlling nitrogen in the nitrogen tank to enter the inner furnace body.

Preferably, the second pipeline is provided with a second gas valve for controlling the gas in the inner furnace body to be discharged.

Preferably, a heat insulation cavity is arranged between the outer furnace body and the inner furnace body, and an asbestos heat insulation layer is arranged in the heat insulation cavity, so that the heat loss of the inner furnace body is reduced, and the electric energy consumption required by tempering is reduced.

Preferably, a material platform is arranged at the bottom of the inner cavity of the inner furnace body and used for placing tempering materials.

Preferably, the left side of the top of the nitrogen tank is provided with a nitrogen inlet pipe, and the nitrogen inlet pipe is connected with a nitrogen generator and used for supplementing the consumption of nitrogen in the nitrogen tank.

Preferably, the nitrogen inlet pipe is provided with a third gas valve for controlling nitrogen to enter the nitrogen tank.

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

the utility model discloses a reasonable structural design and pipe connection can easily realize accurate metal workpiece's vacuum tempering operation to can cool off metal workpiece fast in the inert gas's that is full of nitrogen gas environment, prevent that the part composition in metal workpiece surface and the air from taking place chemical reaction, influence metal workpiece's tempering quality and outward appearance, be fit for the tempering treatment of accurate work piece. And can be as quick refrigerated device to cool off the object alone, improve tempering furnace's practicality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

In the figure: 1-an outer furnace body; 2-nitrogen tank; 3-inner furnace body; 4-an electric heating element; 5, a motor; 6-rotating shaft; 7-a fan; 8-a first conduit; 9-a vacuum pump; 10-a second conduit; 11-a third conduit; 12-a three-way valve; 13-a feed inlet; 14-a fourth conduit; 15-a first gas valve; 16-a second gas valve; 17-heat preservation cavity; 18-a material platform; 19-nitrogen inlet pipe; 20-third gas valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The multifunctional vacuum tempering furnace as shown in figure 1 comprises an outer furnace body 1, a nitrogen tank 2 and an inner furnace body 3, wherein the inner furnace body 3 is positioned in an inner cavity of the outer furnace body 1, a heat preservation cavity 17 is arranged between the outer furnace body 1 and the inner furnace body 3, an asbestos heat preservation layer is arranged in the heat preservation cavity 17, the heat loss of the inner furnace body 3 is reduced, the electric energy consumption required by tempering is reduced, an electric heating element 4 is arranged on the side wall of the inner cavity of the inner furnace body 3, a motor 5 is arranged at the top of the outer furnace body 1, a rotating shaft 6 is arranged at the bottom power output end of the motor 5, the bottom of the rotating shaft 6 extends into the inner cavity of the inner furnace body 3, a fan 7 is arranged on the outer wall of one end, extending into the inner cavity of the inner furnace body 3, a first pipeline 8 is arranged on the left side of the top of the inner furnace body 3, the first pipeline 8 is communicated with the bottom, a vacuum pump 9 is arranged on the right side of the top of the outer furnace body 1, a second pipeline 10 is arranged at the left air inlet end of the vacuum pump 9, the bottom of the second pipeline 10 extends into the inner cavity of the inner furnace body 3, a second gas valve 16 is arranged on the second pipeline 10 to control the gas in the inner furnace body 3 to be discharged, a third pipeline 11 is arranged at the right air outlet end of the vacuum pump 9, a three-way valve 12 is arranged at one end of the third pipeline 11 far away from the vacuum pump 9, the air inlet end of the three-way valve 12 is communicated with the third pipeline 11, a fourth pipeline 13 and a fifth pipeline 14 are arranged at the air outlet end of the three-way valve 12, the air outlet end of the fourth pipeline 13 is communicated with the air inlet end at the top of the nitrogen tank 2, a material platform 18 is arranged at the bottom of the inner cavity of the inner furnace body 3 and used for placing tempering materials, a nitrogen gas inlet pipe 19 is arranged on the left side of the top, the nitrogen inlet pipe 19 is provided with a third gas valve 20 for controlling the nitrogen to enter the nitrogen tank 2.

A concrete application of this embodiment does, the utility model discloses in the use, including 3 rows of air of interior furnace body, tempering and tempering cooling three steps, concrete operation is as follows:

1. 3 rows of air in the inner furnace body

The method comprises the steps of placing a metal workpiece to be tempered on a material platform 18, starting a vacuum pump 9, opening a first gas valve 15 and a second gas valve 16, adjusting a three-way valve 12 to enable a nitrogen tank 2, a first pipeline 8, an inner furnace body 3, a second pipeline 10, a third pipeline 11 and a fifth pipeline 14 to be communicated, enabling nitrogen in the nitrogen tank 2 to enter the inner furnace body 3 to replace air in the inner furnace body 3, exhausting the air into the atmosphere through the fifth pipeline 14 to enable the inner furnace body 3 to be filled with the nitrogen, preventing the metal workpiece from being subjected to chemical reaction with oxygen, water vapor and the like after the temperature of the metal workpiece rises, closing the first gas valve 15, vacuumizing the inner furnace body 3 through the vacuum pump 9, and closing the vacuum pump 9 and the second gas valve 16 after the required air pressure is reached.

2. Tempering treatment

The electric heating element 4 is started, the temperature of the inner cavity of the inner furnace body 3 rises and the metal workpiece is heated through the heating of the electric heating element 4, the motor 5 is started, the rotating shaft 6 connected with the power output end at the bottom of the motor 5 rotates to drive the fan 7 to rotate in the inner cavity of the inner furnace body 3, so that the residual nitrogen in the inner cavity of the inner furnace body 3 flows, the heat is uniformly distributed in the inner furnace body 3, and the tempering effect is improved.

3. Tempering and cooling

After tempering treatment, the metal workpiece needs to be rapidly cooled, the electric heating element 4 is closed, the vacuum pump 9 is started, the first gas valve 15 and the second gas valve 16 are opened, the three-way valve 12 is adjusted, the nitrogen tank 2, the first pipeline 8, the inner furnace body 3, the second pipeline 10, the third pipeline 11 and the fourth pipeline 13 are communicated, nitrogen with low temperature in the nitrogen tank 2 enters the inner furnace body 3, high-temperature nitrogen in the inner furnace body 3 is replaced, and the nitrogen enters the nitrogen tank 2 again through the second pipeline 10, the third pipeline 11 and the fourth pipeline 13, so that recycling is realized, and the metal workpiece can be effectively protected by using nitrogen cooling. After cooling, the vacuum pump 9, the first gas valve 15 and the second gas valve 16 are closed, and the metal workpiece is taken out.

When the metal workpiece is taken and placed, the inner cavity of the inner furnace body 3 can form convection with air, the air needs to be exhausted before heating and tempering, the nitrogen in the nitrogen tank 2 needs to be consumed, and the nitrogen can be supplemented into the nitrogen tank 2 through the nitrogen inlet pipe 19 by opening the third gas valve 20. And the utility model can carry out fast cooling operation to the object through the 3 air exhaust of furnace body in the step and two operations of tempering cooling, improve the practicality.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Multi-functional vacuum tempering furnace, its characterized in that: comprises an outer furnace body (1), a nitrogen tank (2) and an inner furnace body (3), wherein the inner furnace body (3) is positioned in the inner cavity of the outer furnace body (1), the inner cavity side wall of the inner furnace body (3) is provided with an electric heating element (4), the top of the outer furnace body (1) is provided with a motor (5), the bottom power output end of the motor (5) is provided with a rotating shaft (6), the bottom of the rotating shaft (6) extends into the inner cavity of the inner furnace body (3), the outer wall of one end of the inner cavity of the rotating shaft (6) extending into the inner furnace body (3) is provided with a fan (7), the left side of the top of the inner furnace body (3) is provided with a first pipeline (8), the first pipeline (8) is communicated with the bottom air outlet end of the nitrogen tank (2), the right side of the top of the outer furnace body (1) is provided with a vacuum pump (9), the, and the bottom of second pipeline (10) stretches into the inner chamber of interior furnace body (3), the right side of vacuum pump (9) is given vent to anger and is held and be provided with third pipeline (11), the one end that vacuum pump (9) were kept away from in third pipeline (11) is provided with three-way valve (12), and the inlet end and third pipeline (11) of three-way valve (12) are linked together, the end of giving vent to anger of three-way valve (12) is provided with fourth pipeline (13) and fifth pipeline (14), the end of giving vent to anger of fourth pipeline (13) is linked together with the inlet end at nitrogen gas jar (2) top.

2. The multifunctional vacuum tempering furnace according to claim 1, wherein: the first pipeline (8) is provided with a first gas valve (15).

3. The multifunctional vacuum tempering furnace according to claim 1, wherein: and a second gas valve (16) is arranged on the second pipeline (10).

4. The multifunctional vacuum tempering furnace according to claim 1, wherein: a heat insulation cavity (17) is arranged between the outer furnace body (1) and the inner furnace body (3), and an asbestos heat insulation layer is arranged in the heat insulation cavity (17).

5. The multifunctional vacuum tempering furnace according to claim 1, wherein: and a material platform (18) is arranged at the bottom of the inner cavity of the inner furnace body (3).

6. The multifunctional vacuum tempering furnace according to claim 1, wherein: and a nitrogen inlet pipe (19) is arranged on the left side of the top of the nitrogen tank (2), and the nitrogen inlet pipe (19) is connected with a nitrogen generator.

7. The multifunctional vacuum tempering furnace of claim 6, wherein: and a third gas valve (20) is arranged on the nitrogen inlet pipe (19).