CN212833948U

CN212833948U - Refining pot suitable for stirring and mass transfer of high-density liquid

Info

Publication number: CN212833948U
Application number: CN202020894993.2U
Authority: CN
Inventors: 张翰天; 李顺海; 梅立寿; 陈玉斌
Original assignee: Hubei Chukai Metallurgy Co ltd
Current assignee: Hubei Chukai Metallurgy Co ltd
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-03-30
Anticipated expiration: 2030-05-25

Abstract

A refining pot suitable for stirring and mass transfer of high-density liquid is characterized in that: comprises a refining pot body, a pot cover, two flow baffle plates and a stirrer arranged on the pot cover, wherein an output shaft of the stirrer extends into the refining pot body and is connected with a stirring shaft, stirring blades which form an angle of 30-90 degrees with the lower plane of the stirring shaft are arranged on the stirring shaft, the two flow baffle plates are vertically distributed on the periphery of the stirring shaft, and is centrosymmetric about the stirring shaft, the upper end parts of the two flow baffle plates are fixedly connected with the inner end surface of the outer shell of the stirrer or the pot cover, the lower end parts of the two flow baffle plates extend into a similar inverted cone vortex formed at the upper end part of the molten metal when the stirring blades stir, an included angle a between a tangent line of a contact part of the lower end part and the inverted cone-like vortex and a horizontal line is not less than 45 degrees, an included angle b between a tangent line of the intersection of the circular motion track of the molten metal and the flow baffle plate is less than 90 degrees when the stirring blades stir, and the width of the flow baffle plate is 1/20 degrees of the diameter of the upper end part of the refining pot body; simple structure, the stirring effect effectively promotes, improves work efficiency.

Description

Refining pot suitable for stirring and mass transfer of high-density liquid

Technical Field

The utility model discloses a concise pot suitable for high density liquid stirring mass transfer belongs to interphase mass transfer technical field.

Background

In the process of refining and impurity removal of nonferrous metals, a liquid-solid mass transfer reaction process exists in which more liquid has a density greater than that of solid. As the density of the auxiliary materials added in the impurity removal process is slightly less than that of the metal liquid, the auxiliary materials can float on the surface. The traditional stirring mode is to use inclined blades for stirring, and in the stirring process, the metal liquid is driven to do circular motion and also to do axial motion from top to bottom, so that the metal liquid forms internal circulation and the mass transfer is enhanced. However, when the liquid density is much higher than the density of the auxiliary materials, the stirring mode of only adopting the inclined blades cannot achieve a good stirring mass transfer effect, so that the problems of low stirring efficiency and influence on the production progress are caused, and the structure needs to be improved.

Disclosure of Invention

An object of the utility model is to solve the not enough of above-mentioned prior art to a concise pot suitable for high density liquid stirring mass transfer is provided, simple structure, stirring effect effectively promotes, improves work efficiency.

In order to achieve the above object, the utility model provides a following technical scheme: a refining pot suitable for stirring and mass transfer of high-density liquid is characterized in that: including the refining pot body, the pot cover, two keep off and flow the board, adorn the mixer on the pot cover, the mixer output shaft stretches into the refining pot body inside and stirring shaft connection, be equipped with on the (mixing) shaft and be the stirring vane of certain angle with the (mixing) shaft lower plane, two keep off and flow board vertical distribution in the (mixing) shaft periphery, and about (mixing) shaft central symmetry, two keep off and flow board upper end and mixer shell body or pot cover inner end face fixed connection, lower tip stretches into in the class back taper vortex that the molten metal upper end formed when stirring to stirring vane, and the tip is not less than 45 with the contained angle an between the tangent line of class back taper vortex contact site and the horizontal line down, the circular motion orbit of molten metal and the tangent line that keeps off the crossing department of flowing and the contained angle b that keeps off between the board are less than 90 when stirring vane stirs.

The angle between the stirring blade and the lower plane of the stirring shaft is 30-90 degrees.

The outer surface of the inverted cone-like vortex is an inward-bent cambered surface.

The flow baffle is made of materials such as cast iron, stainless steel and the like which do not react with molten metal and auxiliary materials.

The utility model provides a stir the inefficiency at present and lead to the problem of reaction time overlength. The device provided by the utility model have simple structure stable, processing is convenient, the effect is comparatively obvious and do not additionally increase the characteristics of stirring power.

Drawings

Fig. 1 is a top view of the structure of the present invention;

FIG. 2 is a side view of the structure of the present invention;

FIG. 3 is a side view of the present invention;

fig. 4 is a schematic top view of the present invention;

FIG. 5 is an enlarged view of a portion of the structure of FIG. 4;

in the figure: 1. a pot cover; 2. a refining pot body; 3. a blender; 4. a flow baffle plate; 5. a stirring shaft; 6. a stirring blade; 7. a molten metal; 8. an axial motion trajectory; 9. circular motion track.

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 fig. 1, 2, 3, 4 and 5, the utility model comprises a refining pot body 2, a pot cover 1, a stirrer 3 and two baffle plates 4, wherein the stirrer 3 is arranged on the pot cover 1, an output shaft of the stirrer 3 extends into the refining pot body 2 and is connected with a stirring shaft 5, and stirring blades 6 which form a certain angle with the lower plane of the stirring shaft 5 are arranged on the stirring shaft 5; the two flow baffle plates 4 are fixed around the stirring shaft 5; the flow baffle 4 is vertically arranged and needs not to be too deep and extend below the liquid level in the using process. The baffle plate 4 is symmetrical about the center of the stirring shaft 5 to eliminate the influence of unbalanced force on the stirring shaft 5. The flow baffle 4 is made of cast iron, stainless steel and other materials which do not react with the molten metal 7 and auxiliary materials, the extending position is an obvious inverted cone-like vortex formed on the liquid level of the molten metal 7 when the stirring blades 6 stir, and the inclination angle a of the liquid level extending into the position is not less than 45 degrees. The included angle b of the tangent line of the circular motion track 9 of the metal liquid 7 at the baffle when the flow baffle plate 4 and the stirring blade 6 are stirred is less than 90 degrees so as to enhance the tendency of the surface liquid to flow to the center, and the width of the flow baffle plate is 1/20 of the diameter of the upper end part of the refining pot body 2. The angle between the lower planes of the stirring blades 6 and the stirring shaft 5 is 30-90 degrees.

The working principle is as follows: the pot cover 1 covers the refining pot body 2, a charging hole is reserved at the upper end of the pot cover 1, and molten metal 7 is filled in the refining pot body 2. The lower end of the stirrer 3 is connected with a stirring shaft 5 and stirring blades 6, and the stirring shaft is clockwise stirred to drive the molten metal 7 to clockwise rotate so as to generate a circular motion track 9 and a similar inverted cone vortex. The upper end of the flow baffle 4 is connected with the outer shell of the stirrer 3 or the pot cover 1, the lower end of the flow baffle 4 extends into the molten metal 7, the inverted cone-shaped vortex is visually observed from the feeding port, the position of the flow baffle 4 is determined, and the inclination angle a of the liquid level of the lower end part of the flow baffle 4 extending into the position is not less than 45 degrees.

Because the stirring blades 6 have an angle of inclining downwards, the metal liquid is driven to generate an axial motion track 8 from top to bottom in the stirring process, but when the density of the metal liquid is far greater than the density of the auxiliary materials, the internal circulation is not sufficient.

The circular motion track 9 is the track of the normal flowing of the metal liquid 7, and the circular motion part of the metal liquid 7 is converted into the axial motion pointing to the axis under the flow blocking effect of the flow blocking plate 4, so that the floating density at the upper end of the metal liquid 7 is far less than that of the auxiliary material of the metal liquid entering the axial motion track 8 from top to bottom, and the effect of enhancing the liquid-solid contact is achieved.

The utility model provides a stirring optimization device turns into axial motion with the too much circular motion part of molten metal stirring in-process, has strengthened mass transfer efficiency. The stirring device has the characteristics of simple and stable structure, convenience in processing, obvious effect and no extra increase of stirring power, and effectively solves the problem of overlong reaction time caused by low stirring efficiency at present.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A refining pot suitable for stirring and mass transfer of high-density liquid is characterized in that: the refining kettle comprises a refining kettle body (2), a kettle cover (1), two flow baffle plates (4), and a stirring machine (3) arranged on the kettle cover (1), wherein an output shaft of the stirring machine (3) extends into the refining kettle body (2) to be connected with a stirring shaft (5), stirring blades (6) with an angle of 30-90 degrees with the lower plane of the stirring shaft (5) are arranged on the stirring shaft (5), the two flow baffle plates (4) are vertically distributed on the periphery of the stirring shaft (5) and are centrosymmetric about the stirring shaft (5), the upper end parts of the two flow baffle plates (4) are fixedly connected with the outer shell of the stirring machine (3) or the inner end surface of the kettle cover (1), the lower end parts extend into a similar inverted cone vortex formed by the upper end part of molten metal (7) when the stirring blades (6) stir, an included angle a between the tangent of the lower end part and the similar inverted cone contact part and a horizontal line is not less than 45 degrees, and the tangent line of the circular motion track (9) of the molten The included angle b between the two flow baffle plates is less than 90 degrees, and the width of the flow baffle plate is 1/20 of the diameter of the upper end part of the refining pot body (2).

2. A refining vessel suitable for high density liquid agitation mass transfer according to claim 1, wherein: the outer surface of the inverted cone-like vortex is an inward-bent cambered surface.

3. A refining vessel suitable for high density liquid agitation mass transfer according to claim 1, wherein: the flow baffle is made of cast iron or stainless steel which does not react with the molten metal (7) and auxiliary materials.