CN215810141U

CN215810141U - Heat preservation furnace easy for grain refinement and feeding

Info

Publication number: CN215810141U
Application number: CN202122185488.8U
Authority: CN
Inventors: 余辉辉; 曾延琦; 胡强
Original assignee: Institute of Applied Physics of Jiangxi Academy of Sciences
Current assignee: Institute of Applied Physics of Jiangxi Academy of Sciences
Priority date: 2021-09-09
Filing date: 2021-09-09
Publication date: 2022-02-11
Anticipated expiration: 2031-09-09

Abstract

The utility model relates to the technical field of heat preservation furnaces for smelting alloys, in particular to a heat preservation furnace easy for grain refinement and feeding, and solves the problem that in the prior art, the stroke from closing to complete opening of a furnace cover is too long, so that heat loss is easily caused; the furnace comprises a furnace body and a furnace cover, wherein the furnace body is provided with a furnace door, the furnace cover is connected with a connecting frame, the end part of the connecting frame is connected with a supporting plate, and the bottom of the supporting plate is provided with a driving component for driving the supporting plate to vertically move up and down; according to the scheme, the driving device drives the furnace cover to vertically open and close, so that the stroke is effectively reduced, and more heat loss is avoided; the driving plates on the two sides are synchronously driven by the motor, so that the safety and the high efficiency are realized; protective gas can be injected through a high-pressure gas valve at the top to pressurize the molten metal, and feeding is carried out in the continuous casting process, so that crystalline grains of the molten metal are refined.

Description

Heat preservation furnace easy for grain refinement and feeding

Technical Field

The utility model relates to the technical field of alloy smelting heat preservation furnaces, in particular to a heat preservation furnace easy for grain refinement and feeding.

Background

In the prior art, in the aspect of casting aluminum or copper alloy, an induction furnace is used for heating and melting more, molten aluminum or molten copper obtained after melting enters a heat preservation furnace, and the heat preservation furnace keeps the molten aluminum or molten copper at a certain temperature so as to maintain the molten state of the molten aluminum or molten copper.

At present, in the aluminum alloy casting industry, the furnace cover of a holding furnace is mostly in a normally open state. Because the temperature of the molten aluminum after being introduced into the heat preservation furnace is generally in the range of 720-; patent No. CN109489417A discloses an aluminium water heat preservation stove and application method, and the heat preservation stove of disclosing drives the bell through the link and closes and open, and the stroke from the closure of bell to complete opening is too long, causes the calorific loss easily, therefore has certain improvement space.

SUMMERY OF THE UTILITY MODEL

Based on the expression, the utility model provides the holding furnace which is easy to refine crystal grains and supplement, so as to solve the problem that the stroke from closing to completely opening of the furnace cover in the prior art is too long, and the heat loss is easily caused.

The technical scheme for solving the technical problems is as follows:

the utility model provides an easily refine heat preservation stove of crystalline grain and feeding, includes furnace body and bell, the furnace gate has been seted up on the furnace body, be connected with the link on the bell, link end connection has the backup pad, the backup pad bottom is provided with its vertical drive assembly who reciprocates of drive.

On the basis of the technical scheme, the utility model can be further improved as follows.

Furthermore, the driving assembly comprises a driving motor, a speed reducer, a main driving rod, a first driving rod, a second driving rod and a driving plate, the driving motor is connected with the speed reducer, the speed reducer is connected with the main driving rod, the end portion of the main driving rod is respectively connected with the first driving rod and the second driving rod, the connection mode is bevel gear engagement, the driving plate is provided with two groups of driving plates which are respectively fixedly connected with the two sides of the supporting plate, the end portions of the two groups of driving plates are respectively connected with the first driving rod and the second driving rod, and the connection mode is gear and rack engagement.

Furthermore, a supporting column is connected to the driving plate.

Furthermore, a high-temperature air valve is arranged in the middle of the furnace cover.

Furthermore, the bottom of the furnace cover is connected with a convex ring, and the convex ring extends into the furnace body and is abutted against the inner wall of the furnace body.

Furthermore, an annular accommodating groove is formed in the top of the side wall of the furnace body, and an isolating ring in inserting fit with the accommodating groove is connected to the furnace cover.

Furthermore, a groove is formed in the bottom of the furnace cover, and a heating element is arranged at the groove of the furnace cover.

Furthermore, special heat-resistant bricks are attached to the inner wall of the furnace body.

Compared with the prior art, the technical scheme of the application has the following beneficial technical effects:

the driving device drives the furnace cover to vertically open and close, so that the stroke is effectively reduced, and more heat loss is avoided; the driving plates on the two sides are synchronously driven by the motor, so that the safety and the high efficiency are realized; protective gas can be injected through a high-pressure gas valve at the top to pressurize the molten metal, and feeding is carried out in the continuous casting process, so that crystalline grains of the molten metal are refined.

Drawings

FIG. 1 is a schematic view of a furnace lid according to an embodiment of the present invention after being opened;

FIG. 2 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 3 is a schematic view of the structure of FIG. 1 from another perspective;

in the drawings, the components represented by the respective reference numerals are listed below:

1. a furnace body; 2. a furnace cover; 3. a furnace door; 4. a connecting frame; 5. a support plate; 6. a drive plate; 7. a support pillar; 8. a main drive rod; 9. a first drive lever; 10. a second drive lever; 11. a speed reducer; 12. a drive motor; 13. a high-temperature gas valve; 14. a convex ring; 15. accommodating grooves; 16. an isolating ring; 17. heating the component; 18. a special heat-resistant brick.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Embodiments of the present application are set forth in the accompanying drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The heat preservation furnace easy to refine crystal grains and supplement shown in the figures 1-3 comprises a furnace body 1 and a furnace cover 2, wherein a furnace door 3 is arranged on the furnace body 1 and used for being in butt joint with an external water-cooled crystallizer to perform casting blank operation, and in order to solve the problem that in the prior art, after the furnace cover 2 is opened, the furnace door is too large and long, and heat loss is more, a connecting frame 4 is connected onto the furnace cover 2, a supporting plate 5 is connected to the end of the connecting frame 4, a driving assembly for driving the supporting plate 5 to vertically move up and down is arranged at the bottom of the supporting plate, and the connecting mode is bolting. The driving component drives the furnace cover 2 to move up and down, after molten aluminum or molten copper is melted in the smelting furnace, the molten aluminum or molten copper is directly poured into a gap formed between the furnace cover 2 and the top of the furnace body 1, the driving component drives the furnace cover 2 to descend and directly cover, the stroke of the furnace cover 2 is short, and heat loss is low.

The driving assembly comprises a driving motor 12, a speed reducer 11, a main driving rod 8, a first driving rod 9, a second driving rod 10 and a driving plate 6. Driving motor 12 is connected with reduction gear 11 and reduces output speed, reduction gear 11 is connected with main drive pole 8, the tip of main drive pole 8 respectively with first actuating lever 9, the second actuating lever 10 links to each other, the connected mode is the bevel gear meshing, the first conical gear of tip fixedly connected with of main drive pole 8 promptly, first actuating lever 9, the tip fixedly connected with second conical gear of second actuating lever 10, second conical gear is located first conical gear both sides respectively and meshes with it, main drive pole 8 drives first actuating lever 9 in step, second actuating lever 10 rotates, but the rotation direction of first actuating lever 9 and second actuating lever 10 is opposite.

The drive plate 6 is equipped with two sets ofly respectively with 5 both sides fixed connection of backup pad, and is two sets of 6 tip of drive plate are connected with first actuating lever 9, second actuating lever 10 respectively, and connected mode is rack and pinion meshing, and fixedly connected with gear on the position that first actuating lever 9, second actuating lever 10 are connected with

drive plate

6, and 6 tip of drive plate are the rack structure, and first actuating lever 9 rotates with second actuating lever 10 and drives corresponding gear revolve, makes drive plate 6 reciprocate, and drive plate 6 removes in the spout that has set for, and the spout is not shown in the picture. Since the rotation directions of the first driving rod 9 and the second driving rod 10 are opposite, the contact directions of the first driving rod 9 and the second driving rod 10 with the driving plates 6 are also opposite, as shown in fig. 3, so as to ensure that the driving plates 6 on the two sides synchronously move up or down.

Opening and closing of current bell 2 all still have through the manual screw rod of shaking of operator to control, the operation is comparatively inconvenient, wastes time and energy, and work efficiency is low, and this drive arrangement is not only safe, and is high-efficient moreover, can further reduce the blow-in and close stove in-process calorific loss.

Preferably, the driving plate 6 is connected with a supporting column 7, the supporting column 7 is located at the gravity center of the supporting plate 5 and matched with the sliding grooves on the two sides, the whole structure can be better fixed, and stability is guaranteed.

In the casting process, due to the dead weight of the copper liquid, the lower surface of the copper liquid can be tightly attached to the crystallizer, heat is transferred out through the graphite of the crystallizer and the water-cooling copper sleeve, the copper liquid has a high cooling speed, and crystal grains are refined to a certain extent. And a gap with a certain thickness is usually formed between the upper surface of the copper liquid and the crystallizer, because the copper liquid and the crystallizer are isolated by the contraction of the copper liquid and high-temperature water vapor, the cooling speed of the upper surface of the copper liquid is reduced, crystal grains are coarse, and meanwhile, a U-shaped surface is formed on the upper surface of the copper liquid due to the difficult feeding of the copper liquid.

In order to solve the problem, the middle part of the furnace cover 2 is also provided with a high-temperature air valve 13, a certain amount of protective gas such as argon or nitrogen is introduced before the continuous casting process, the gas pressure inside the heat preservation furnace is adjusted, a certain amount of gas pressure is applied to the upper end of the heat preservation furnace, copper liquid is extruded to enable the upper surface of the copper liquid to be tightly attached to the crystallizer at the furnace door 3 and in the crystallizer, gaps above the copper liquid are eliminated, the cooling speed of the upper surface of the copper liquid is increased, and therefore the effect of grain refinement is achieved.

Preferably, the bottom of the furnace cover 2 is connected with a convex ring 14, and the convex ring 14 extends into the furnace body 1 and is abutted against the inner wall of the furnace body 1. The convex ring 14 is abutted against the inner wall of the furnace body 1, so that the sealing effect of the furnace cover 2 can be effectively improved, and the heat preservation efficiency is improved.

Preferably, annular holding tank 15 has been seted up at furnace body 1 lateral wall top, is connected with on the bell 2 with holding tank 15 grafting complex spacer ring 16, spacer ring 16 and holding tank 15's block butt joint, can further improve bell 2's sealed effect.

Set up flutedly in this scheme bell 2 bottom, bell 2 is provided with heating components and parts 17 in the recess, and the heating components and parts 17 that are located the recess of bell 2 have avoided with the metal liquid direct contact, can prevent that the metal liquid from covering to remain on heating components and parts 17, influences follow-up heating effect.

Specifically, the inner wall of the furnace body 1 is adhered with special heat-resistant bricks 18.

the furnace cover 2 is driven by the driving device to vertically open and close, so that the stroke is effectively reduced, and more heat loss is avoided; the driving plates 6 on the two sides are synchronously driven by the motor, so that the safety and the high efficiency are realized; protective gas can be injected through a high-pressure gas valve at the top to pressurize the molten metal, and feeding is carried out in the continuous casting process, so that crystalline grains of the molten metal are refined.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides an easily refine crystalline grain and heat preservation stove of feeding which characterized in that, includes furnace body and bell, the furnace gate has been seted up on the furnace body, be connected with the link on the bell, link end connection has the backup pad, the backup pad bottom is provided with its vertical drive assembly who reciprocates of drive.

2. The holding furnace easy for grain refinement and feeding according to claim 1, wherein the driving assembly comprises a driving motor, a speed reducer, a main driving rod, a first driving rod, a second driving rod, and a driving plate, the driving motor is connected to the speed reducer, the speed reducer is connected to the main driving rod, the ends of the main driving rod are respectively connected to the first driving rod and the second driving rod in a bevel gear engagement manner, the driving plate has two sets of driving plates fixedly connected to both sides of the supporting plate, respectively, the ends of the two sets of driving plates are respectively connected to the first driving rod and the second driving rod in a gear-rack engagement manner.

3. A holding furnace for easily refining grains and feeding according to claim 2, wherein a supporting column is connected to the driving plate.

4. The holding furnace easy for grain refinement and feeding as claimed in claim 1, wherein a high temperature gas valve is provided in the middle of the furnace cover.

5. The heat-preserving furnace easy for grain refinement and feeding as claimed in claim 1, wherein a convex ring is connected to the bottom of the furnace cover, and the convex ring extends into the furnace body and abuts against the inner wall of the furnace body.

6. The heat preserving furnace easy for grain refinement and feeding as claimed in claim 1, wherein an annular accommodating groove is formed at the top of the side wall of the furnace body, and an isolating ring in insertion fit with the accommodating groove is connected to the furnace cover.

7. The heat preservation furnace easy to refine crystal grains and supplement shrinkage as claimed in claim 1, wherein a groove is formed at the bottom of the furnace cover, and a heating element is arranged at the groove of the furnace cover.

8. The holding furnace easy to refine grains and supplement according to claim 1, wherein a special heat-resistant brick is attached to the inner wall of the furnace body.