CN217715867U - Vacuum furnace - Google Patents

Abstract

The utility model discloses a vacuum furnace, which comprises a shell, wherein a lifting shaft is arranged in the shell; a bracket is arranged at the lower part of the lifting shaft; the upper part of the bracket is provided with a bottom support; the upper part of the bottom support is provided with a heat insulation pad; a coil is arranged on the upper part of the heat insulation pad; a lifting motor for controlling the bracket to move on the lifting shaft is arranged on the platform at the upper part of the coil; a furnace body is arranged on the platform right above the coil; a furnace cover which can be opened and closed is arranged above the furnace body; one side of the furnace body is connected with a vacuum pump through an opening; and one side of the shell is provided with transparent heat-insulating glass and an operation panel. The vacuum furnace is convenient for production operation because the heat-insulating glass is arranged at the front part of the shell; the operation is carried out in the shell, so that excessive heat loss caused by repeatedly opening the furnace body is avoided, and energy is saved; after the alloy to be processed is put into the furnace cover, the furnace body can be kept away from the shell until the smelting is finished, so that the risk of scalding workers is avoided.

Description

Vacuum furnace

Technical Field

The utility model belongs to alloy processing equipment field, concretely relates to vacuum furnace.

Background

Vacuum furnace, i.e. in the specific space of furnace chamber utilizing vacuum system (formed from vacuum pump, vacuum measuring device and vacuum valve which are carefully assembled) to discharge partial material from furnace chamber, and make the pressure in furnace chamber be less than pressure in furnace chamberA standard atmospheric pressure, and a space in the furnace chamber to realize a vacuum state. A vacuum furnace is a device that heats in a vacuum environment. The furnace chamber sealed by the metal casing is connected with a high vacuum pump system by a pipeline. The vacuum degree of the hearth can reach 133 × (10)^-2～10^-4) Pa. The heating system in the furnace can be directly electrified and heated by resistance furnace wires (such as tungsten wires) and can also be heated by high-frequency induction. The highest temperature can reach about 3000 ℃. The method is mainly used for ceramic sintering, vacuum smelting, degassing of electric vacuum parts, annealing, brazing of metal parts, ceramic-metal sealing and the like.

When the current vacuum furnace is used for alloy smelting, the selection of heating time and vacuum degree can be determined through a plurality of experiments in advance, because the outer wall of the vacuum furnace is made of metal, the molten state is not easy to observe, and the heat loss is easily caused by frequently opening the vacuum furnace, so that the experiment efficiency is reduced. Although there is a vacuum furnace in which a furnace body is made of quartz glass, the reliability of use is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a vacuum furnace, the shortcoming of above prior art can be solved in the use of this equipment, reaches the molten condition of being convenient for observe alloy metal and the efficiency of convenient experiment operation.

In order to achieve the above purpose, the utility model provides a following technical scheme: a vacuum furnace comprises a shell, wherein a lifting shaft is arranged in the shell; a bracket is arranged at the lower part of the lifting shaft; the upper part of the bracket is provided with a bottom support; the upper part of the bottom support is provided with a heat insulation pad; a coil is arranged on the upper part of the heat insulation pad; a lifting motor for controlling the bracket to move on the lifting shaft is arranged on the platform at the upper part of the coil; a furnace body is arranged on the platform right above the coil; a furnace cover which can be opened and closed is arranged above the furnace body; one side of the furnace body is connected with a vacuum pump through an opening; and one side of the shell is provided with transparent heat-insulating glass and an operation panel.

Preferably, a sealing ring is arranged at the joint of the upper part of the bottom support and the lower part of the furnace body.

Preferably, a shock absorber is arranged between the bracket and the bottom support.

Preferably, a base is arranged at the lower part of the shell.

Preferably, a ladder is arranged on one side of the shell.

Preferably, the platform is provided with a guardrail at the periphery.

Preferably, the housing is provided with heat dissipation holes.

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

1. the heat insulation glass is arranged at the front part of the shell, and only the bottom support is required to be lowered when the molten state needs to be observed, so that the production operation is convenient;

2. the operation is carried out in the shell, so that excessive heat loss caused by repeatedly opening the furnace body is avoided, and energy is saved;

3. after the alloy to be processed is put in through the furnace cover, the operation can be carried out outside the shell and far away from the furnace body until the smelting is finished, so that the risk of scalding workers is avoided;

other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or technical solutions in related arts, the drawings used in the description of the embodiments or related arts will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a first perspective view of the vacuum furnace of the present invention;

FIG. 2 is a front view of the vacuum furnace of the present invention;

FIG. 3 is a second perspective view of the vacuum furnace of the present invention;

FIG. 4 is a partial enlarged view of the vacuum furnace of the present invention;

in the figure: 1. the device comprises a shell, 2, a lifting shaft, 3, a bracket, 4, a bottom support, 5, a heat insulation pad, 6, a coil, 7, a lifting motor, 8, a furnace body, 9, a furnace cover, 10, a vacuum pump, 11, an operation panel, 12, a sealing ring, 13, a shock absorber, 14, a base, 15, a ladder, 16, a guardrail, 17 and a heat dissipation hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary terms "at 8230; \8230; 'above" may include both orientations "at 8230; \8230;' above 8230; 'at 8230;' below 8230;" above ". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Referring to fig. 1-4, the present invention provides a technical solution: a vacuum furnace comprises a shell 1, wherein a lifting shaft 2 is arranged inside the shell 1; a bracket 3 is arranged at the lower part of the lifting shaft 2; the upper part of the bracket 3 is provided with a bottom support 4; the upper part of the bottom support 4 is provided with a heat insulation pad 5; the coil 6 is arranged on the upper part of the heat insulation pad 5; a lifting motor 7 for controlling the bracket 3 to move on the lifting shaft 2 is arranged on a platform at the upper part of the coil 6; a furnace body 8 is arranged on the platform right above the coil 6; a furnace cover 9 which can be opened and closed is arranged above the furnace body 8; one side of the furnace body 8 is connected with a vacuum pump 10 through an opening; the casing 1 is provided with a transparent heat-insulating glass and an operation panel 11 on one side.

A sealing ring 12 is arranged at the joint of the upper part of the bottom support 4 and the lower part of the furnace body 8. A shock absorber 13 is arranged between the bracket 3 and the shoe 4. The lower part of the housing 1 is provided with a base 14. A ladder 15 is arranged on one side of the housing 1. Guard rails 16 are mounted around the platform. The housing 1 is provided with heat dissipation holes 17.

When in use, the lifting shaft 2 is lifted to the highest height, the furnace body 8 is sealed through the sealing ring 12, the furnace cover 9 is opened, and the alloy metal to be processed is put into the dry pot and then put into the coil 6 on the heat insulation pad 5. And controlling a vacuum pump 10 to vacuumize, turning on a heating switch to start vacuum smelting, after the pressure in the furnace body is recovered after the smelting is finished, turning on a furnace cover 9, and taking out the heated alloy metal for subsequent casting.

Use example 1:

when vacuum melting is needed, the lifting shaft 2 is lifted to the highest position, so that the furnace body 8 is sealed, metal alloy to be melted is placed in the furnace body by opening the furnace cover 9, after the furnace cover 9 is closed, the vacuum pump 10 is started, heating is carried out through the coil 6, melting is finished, and after one atmospheric pressure is recovered in the furnace body, the furnace cover 9 is opened and taken out.

When processing a new alloy, when needing experiment heat time and heating vacuum degree, when needing regularly to observe the heating molten state, after heating to a certain time, close vacuum pump 10, make its inside normal pressure that resumes, control elevator motor 7 makes collet 4 descend to the height that can observe, record molten state back, rise collet 4, start vacuum pump 10 and continue the evacuation heating, so the operation can carry out the vacuum furnace heating experiment under the thermal condition of as little as possible loss, end until the heating experiment. The heating influence of the heating time and the vacuum degree on the alloy can be known through one-time experimental heating.

Use example 2:

when vacuum melting is not needed, the bottom support 4 is lifted to the highest position, and the alloy to be melted is directly heated and melted.

If the processing state of the alloy metal which does not need vacuum melting needs to be observed, the collet 4 can be lowered to the lower observable area for direct heating after the alloy to be melted is placed, the change of the alloy melting state can be observed while heating, and after the heating experiment is finished, the collet 4 is lifted and taken out from the upper furnace body 8.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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 (7)

1. A vacuum furnace comprising a housing (1), characterized in that: a lifting shaft (2) is arranged in the shell (1); a bracket (3) is arranged at the lower part of the lifting shaft (2); the upper part of the bracket (3) is provided with a bottom support (4); the upper part of the bottom support (4) is provided with a heat insulation pad (5); a coil (6) is arranged on the upper part of the heat insulation pad (5); a lifting motor (7) for controlling the bracket (3) to move on the lifting shaft (2) is arranged on the platform at the upper part of the coil (6); a furnace body (8) is arranged on the platform right above the coil (6); a furnace cover (9) which can be opened and closed is arranged above the furnace body (8); one side of the furnace body (8) is connected with a vacuum pump (10) through an opening; transparent heat insulation glass and an operation panel (11) are arranged on one side of the shell (1).

2. A vacuum furnace as claimed in claim 1, characterized in that: and a sealing ring (12) is arranged at the joint of the upper part of the bottom support (4) and the lower part of the furnace body (8).

3. A vacuum furnace as claimed in claim 1, characterized in that: and a shock absorber (13) is arranged between the bracket (3) and the bottom support (4).

4. A vacuum furnace as claimed in claim 1, characterized in that: the lower part of the shell (1) is provided with a base (14).

5. A vacuum furnace as claimed in claim 1, characterized in that: a ladder (15) is arranged on one side of the shell (1).

6. A vacuum furnace as claimed in claim 1, characterized in that: and a guardrail (16) is arranged on the periphery of the platform.

7. A vacuum furnace as claimed in claim 1, characterized in that: the shell (1) is provided with a heat dissipation hole (17).

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