CN218507869U - Movable heat preservation device for vacuum distillation furnace - Google Patents

Abstract

The utility model discloses a portable heat preservation device for vacuum distillation furnace includes: the movable heat-insulation barrel is sleeved on the crucible and the condensation collecting device and is configured to move along the vertical direction; the lifting device is arranged at the top of the movable heat-insulation barrel and is used for driving the movable heat-insulation barrel to move along the vertical direction; lifting the movable heat-insulating cylinder by using a lifting device, so that the crucible and the condensing device form a movable high-temperature area and a movable low-temperature area in the process of opening the furnace, the materials in the condensing and collecting device are volatilized and purified for multiple times, and volatile matters are concentrated at one end of the condenser; in the blowing-out process, the movable heat-insulating barrel is moved by the lifting device, the heat-insulating area of the crucible and the condensation collecting device is controlled, the controllable cooling of the vacuum distillation furnace is realized, meanwhile, inert gas can be filled into the vacuum distillation furnace to accelerate the cooling, the cooling rate of the equipment is improved, and the production efficiency of the vacuum distillation furnace is ensured.

Description

Movable heat preservation device for vacuum distillation furnace

Technical Field

The utility model relates to a non ferrous metal alloy vacuum distillation equipment technical field, concretely relates to portable heat preservation device for vacuum distillation furnace.

Background

The vacuum distillation furnace mainly comprises a vacuum system, a heating system, an evaporation system, a condensation collecting device, a heat preservation device, a water cooling system and the like, is mainly used for separating and purifying non-ferrous metal alloy, and has the following basic principle: according to the characteristic that different metal elements in the alloy have different boiling points, the alloy in the crucible is heated in a vacuum environment, so that the metal elements are gasified in the sequence from low boiling points to high boiling points, and the metal elements rise into a condensation collection device for condensation collection.

At present, the heat preservation of vacuum distillation stove is all fixed, at the blow-in-process, it is effectual to keep warm, then the cooling process is slow, when shutting down after the evaporation process is accomplished, take out the material product of processing behind the vacuum distillation stove of need cooling, nevertheless because crucible and condensation collection device all overlap outward and have the heat-preserving container body for whole evaporation plant cooling rate is very slow, and this just makes the required time of vacuum distillation stove cooling very long, can't satisfy actual need, can influence the production progress even.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a vacuum distillation furnace's portable heat preservation device for vacuum distillation furnace has not only solved current vacuum furnace and has realized the controllable cooling of vacuum distillation furnace at the slow problem of blowing out the heat dissipation of process, forms the high-temperature region and the low-temperature region that remove at the process of blowing in simultaneously, makes the material among the condensation collection device realize the purification of volatilizing many times.

The utility model provides a portable heat preservation device for vacuum distillation furnace, include:

and the movable heat-insulation barrel is sleeved on the crucible and the condensation collecting device and is configured to move along the vertical direction, and the height of the movable heat-insulation barrel is not higher than that of the condensation collecting device.

The lifting device is arranged at the top of the movable heat-insulation barrel and used for driving the movable heat-insulation barrel to move along the vertical direction;

in the process of blowing in the furnace, the heat-insulating cylinder body is lifted once or many times through the lifting device, so that the heat-insulating cylinder body, the crucible and the condensation collecting device form a movable high-temperature area and a movable low-temperature area, the materials in the condensation collecting device are volatilized and purified many times, and the materials are collected in different areas.

When the vacuum distillation furnace is stopped, the movable heat-insulating barrel is moved upwards by the lifting device, the heat-insulating area of the crucible and the condensation collecting device is controlled, the controllable cooling of the vacuum distillation furnace is realized, and meanwhile, inert gas can be filled into the vacuum distillation furnace to accelerate the cooling.

Further, the lifting device comprises:

the bottom of the lifting hanger is fixedly connected with the movable heat-insulation barrel;

and the lifting rod is fixed at the top of the lifting hanger, penetrates through a furnace cover of the vacuum distillation furnace and is used for being externally connected with lifting equipment.

Furthermore, one end of the lifting rod, which is positioned outside the furnace cover, is sleeved with a sealing corrugated pipe, and the sealing corrugated pipe is used for sealing the joint of the lifting rod and the furnace cover.

Further, the top end of the lifting rod is provided with a lifting pull ring.

Further, a gap exists between the heat-insulating layer and the condensation collecting device.

The utility model discloses a theory of operation:

(1) Zone volatilization in the separation process: when the movable heat-insulating cylinder body moves to the bottommost part when the mixed metal substance is separated and purified in vacuum, the heat of the evaporation disc which is not in the heat-insulating range is radiated to the water-cooled furnace shell to form a low-temperature area, so that a larger temperature difference is formed between the temperature of the crucible and the low-temperature area, and the metal vapor is rapidly condensed into liquid after being cooled. Along with the separation, utilize lifting device such as driving to move up the activity heat preservation barrel, make the heat preservation district move up, and the lower of boiling point can volatilize again in the metallic liquid in the heat preservation district this moment, condense into liquid in getting into the new low temperature zone in heat preservation district top, analogize in proper order, through the activity heat preservation barrel of active adjustment, the metal that the boiling point is high can progressively be collected, make volatile element reduce gradually, consequently, the low boiling point metal vapour that separates in the metallic liquid in the evaporating dish with activity heat preservation barrel coincidence region can volatilize a bit more thoroughly, reach regional volatile purpose, volatilization efficiency and purity in this region have been improved.

In the process, because the temperature difference between the low-temperature area and the high-temperature area is large, most of the metal gas volatilized from the high-temperature area is condensed into liquid in the low-temperature area, so that the vapor pressure in the condensation and collection device is small, and the temperature required by metal volatilization is reduced under the condition of small vapor pressure, so that the energy consumption of a heating body can be reduced.

(2) Cooling after the operation is finished: when the operation of the vacuum distillation furnace is finished and the temperature needs to be reduced, inert gas is filled into the furnace cavity through the charging connector to break the vacuum, the movable heat-insulating cylinder body is lifted, a heating body, the crucible and the condensation collecting device are exposed, high-temperature heat on the crucible is always radiated to the water-cooled furnace shell, meanwhile, the lower section of a gap between the condensation collecting device and the movable heat-insulating cylinder body is contacted with the inert gas in the vacuum distillation furnace to form convection, the heated inert gas flows upwards and exchanges heat with the water-cooled furnace cover, the heat of the crucible and the condensation collecting device can be quickly taken away by the water-cooling system, and the cooling speed of the vacuum distillation furnace is accelerated.

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

(1) The utility model provides a district vacuum distillation is portable heat preservation device and vacuum distillation stove for stove can go up and down the heat-preserving container body that moves about through external jacking equipment in the disengaging process, but the quick adjustment is not at the temperature of the evaporating dish of activity heat-preserving container body within range to form mobilizable evaporation and condensation area, reach the regional effect of volatilizing, existing improvement production efficiency that does benefit to can reach purification purpose many times again

(2) In the separation process, because the vapor pressure in the condensation collection device is relatively small, the temperature required by metal volatilization is also reduced under the condition of small vapor pressure, thereby reducing the energy consumption of the heating element

(3) After the operation is finished, the contact area between the condensation collecting device and the inert gas in the furnace is increased, so that the heat of the condensation collecting device and the crucible is taken away by the water cooling system after being absorbed by the inert gas, the cooling rate of the evaporation device and the condensation collecting device is effectively improved, and the production efficiency of the vacuum distillation furnace is ensured.

Drawings

FIG. 1 is a schematic view of the structure of a vacuum distillation furnace in example 1;

FIG. 2 is a schematic view showing the construction of the vacuum distillation furnace in example 1 after the movable heat-retaining cylinder has been lifted;

FIG. 3 is a schematic view of the structure of a movable heat-insulating cylinder in embodiment 1;

FIG. 4 is a use state diagram of the movable heat-insulating cylinder in example 1;

FIG. 5 is an enlarged view of a portion of FIG. 2 at A;

FIG. 6 is a schematic view of the principle in example 1;

FIG. 7 is a schematic view of the movable thermal insulating cylinder of FIG. 6 when it is elevated to a second temperature zone;

FIG. 8 is a schematic view of the structure of a crucible in example 1;

fig. 9 is a schematic view of the structure of an evaporation pan in embodiment 1.

Reference numerals:

1-furnace shell; 11-furnace cover; 2-a heating device; 3-a crucible; 4-a condensing and collecting device; 5-moving the heat-insulating cylinder; 51-an insulating layer; 61-a lifting cradle; 62-a lifting bar; 63-sealing the bellows; 64-lifting tab.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example 1

As shown in fig. 1, the present embodiment provides a vacuum distillation furnace, which mainly comprises a furnace shell 1, a furnace cover 11, a heating device 2, a crucible 3, a condensation collection device 4, and a movable heat preservation device for the vacuum distillation furnace, wherein the movable heat preservation device is sleeved on the crucible 3 and the condensation collection device 4, and a water cooling system for cooling is arranged on the furnace shell 1 and the furnace cover 11. As shown in fig. 8 to 9, the evaporation pan of the crucible 3 and the condensation collection device 4 can be configured in the shape of a plurality of ingot molds, and the ingot casting step can be completed in the furnace while separating.

Specifically, as shown in fig. 1 to 4, the movable heat-insulating apparatus for a vacuum distillation furnace comprises: the crucible and the condensation collecting device 4 are sleeved with the movable heat-insulation barrel 5 and the lifting device, the inner wall of the movable heat-insulation barrel 5 is provided with a heat-insulation layer 51, and the movable heat-insulation barrel 5 is integrally configured to move along the vertical direction. The lifting device is arranged at the top of the movable heat-insulation barrel body 5 and used for driving the movable heat-insulation barrel body 5 to move along the vertical direction. Furthermore, a gap exists between the heat-insulating layer 51 and the condensation collecting device 4, so that when the operation is finished and the temperature is reduced and cooled, the inert gas forms airflow to accelerate cooling.

The lifting device comprises: a lifting hanger 61 and a lifting rod 62, wherein the bottom of the lifting hanger 61 is fixedly connected with the movable heat-insulation cylinder 5; the lifting rod 62 is fixed at the top of the lifting hanger 61, the top end of the lifting rod passes through the furnace cover 11 and extends out, a sealing corrugated pipe 63 used for sealing the joint of the lifting rod 62 and the furnace cover 11 is sleeved on the part extending out, the bottom of the sealing corrugated pipe 63 is fixedly sealed with the furnace cover 11, and the top of the sealing corrugated pipe is fixedly sealed with the lifting rod 62, so that inert gas is prevented from flowing out, and heat loss during production is caused. In this embodiment, the lifting bar 62 is provided at its top end with a lifting tab 64 for use with a hook to lift or lower the vacuum distillation furnace from or to the movable insulation unit. In addition, the existing lifting equipment such as a worm gear structure and a screw rod structure driven by a motor can be used for driving the movable heat preservation device for the vacuum distillation furnace to lift, and the lifting equipment can be specifically selected according to actual conditions and is not limited herein.

Specifically, the working principle of the zonal volatilization in the separation process is as follows:

taking Pb-containing, gold-silver-copper alloy as an example, the volatilization sequence of metal elements in the alloy is as follows: pb, bi, ag, cu and Au. As shown in FIG. 6, for easy understanding, the condensation collection device is simply divided into four temperature zones from bottom to top, during the high temperature volatilization process, the movable heat preservation cylinder 5 is located at the bottommost part, the crucible forms a high temperature zone alone or together with the first temperature zone, the adjustment is carried out according to the actual generation, the high temperature zone is shared by the crucible and the first temperature zone, at this time, because the second temperature zone is in an open state, the heat thereof is taken away by a cooling system on the furnace body through heat radiation, so that the temperature difference between the temperature of the second temperature zone and the temperature of the high temperature zone is larger, the second temperature zone, the third temperature zone and the fourth temperature zone are low temperature zones, in the high temperature zone, cu, ag, pb and Bi volatilize, enter the second temperature zone and then are all condensed into liquid state, and liquid Au remains in the crucible or the first temperature zone. As shown in fig. 7, the heat-insulating area of the mixed liquid (Cu-Ag-Pb-Bi alloy) in the second temperature zone is moved to the second temperature zone by moving the heat-insulating cylinder 5 upward, and a part of heat in the first temperature zone is taken away by the cooling system, so that the temperature of the mixed liquid is not increased significantly, au collected therein is not volatilized, a large temperature difference is formed between the second temperature zone and the third temperature zone, the second temperature zone forms a new high temperature zone, the third temperature zone is a new low temperature zone, at this time, as the temperature of the second temperature zone is increased, ag, pb, and Bi in the mixed liquid originally condensed in the zone continue to volatilize upward and condense in the third temperature zone, at this time, the metal liquid obtained in the second temperature zone is Cu, the mixed liquid (Ag-Pb-Bi alloy) condensed in the third temperature zone is mixed with a very small amount of substance (Ag-Pb-Bi alloy) which is condensed first, and the Cu can be condensed completely in the second temperature zone and cannot reach the upper low temperature zone because the third temperature zone and the fourth temperature zone are far away from the heat source. Similarly, an evaporation area and a condensation area aiming at the Ag-Pb-Bi are formed by moving the movable heat-insulating cylinder body 5, so that the Pb-Bi is condensed in the fourth temperature area, and the Ag in the third temperature area is purified by volatilization of the Pb-Bi. The purification in different areas can be carried out for many times by repeatedly moving the movable heat-insulating cylinder body 5 up and down, and the purification effect is further improved.

As shown in fig. 5, after the operation is finished, inert gas is filled into the furnace cavity through the charging nozzle to break the vacuum, the gap between the collecting device 4 and the insulating layer 51 is contacted with the inert gas in the vacuum distillation furnace to form convection, the heated inert gas flows upwards to exchange heat with the water-cooled furnace cover 11, the heat on the crucible 3 and the condensation collecting device 4 can be quickly taken away by the water-cooling system on the furnace cover 11 of the furnace shell 1, and the cooling speed is further accelerated.

It is right to have used specific individual example above the utility model discloses expound, only be used for helping to understand the utility model discloses, not be used for the restriction the utility model discloses. To the technical field of the utility model technical personnel, the foundation the utility model discloses an idea can also be made a plurality of simple deductions, warp or replacement.

Claims (5)

1. A movable heat preservation device for a vacuum distillation furnace is characterized by comprising:

the movable heat-insulation cylinder (5) is sleeved on the crucible (3) and the condensation collecting device (4) of the vacuum distillation furnace and is configured to move along the vertical direction, and the height of the movable heat-insulation cylinder (5) is not higher than that of the condensation collecting device (4);

the lifting device (6) is arranged at the top of the movable heat-insulation barrel (5) and is used for driving the movable heat-insulation barrel (5) to move along the vertical direction;

in the process of opening the furnace, the movable heat-insulating cylinder body (5) is lifted once or for many times through the lifting device (6), so that the movable heat-insulating cylinder body, the crucible (3) and the condensation collecting device (4) form a movable high-temperature area and a movable low-temperature area.

2. The mobile insulation apparatus for a vacuum distillation furnace as claimed in claim 1, wherein the lifting means (6) comprises:

the bottom of the lifting hanger (61) is fixedly connected with the movable heat-insulation cylinder (5);

and the lifting rod (62) is fixed at the top of the lifting hanger (61), and the lifting rod (62) penetrates through a furnace cover (11) of the vacuum distillation furnace and is used for externally connecting lifting equipment.

3. The movable heat-insulating apparatus for a vacuum distillation furnace as claimed in claim 2, wherein a sealing bellows (63) is provided on an end of the lifting bar (62) outside the furnace cover (11), and the sealing bellows (63) is used for sealing a joint of the lifting bar (62) and the furnace cover (11).

4. The movable heat-insulating apparatus for a vacuum distillation furnace as claimed in claim 2, wherein the lifting rod (62) is provided at its top end with a lifting tab (64).

5. The movable heat-insulating device for the vacuum distillation furnace as claimed in claim 1, wherein the inner wall of the movable heat-insulating cylinder (5) is provided with a heat-insulating layer (51), and a gap is formed between the heat-insulating layer (51) and the condensation collecting device (4).

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