CN211025984U

CN211025984U - Compound graphite electrode batching mixing arrangement

Info

Publication number: CN211025984U
Application number: CN201921834892.XU
Authority: CN
Inventors: 张惠兵; 刘雁伟
Original assignee: Datong Tongyang Carbon Co ltd
Current assignee: Datong Tongyang Carbon Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-07-17
Anticipated expiration: 2029-10-29

Abstract

The utility model relates to a composite graphite electrode batching and mixing device, belonging to the technical field of graphite electrode production; aims to solve the problem of uneven stirring and mixing of the raw materials of the composite graphite electrode in the kneading process; the device comprises a shell, wherein a powder mixing cavity and an air blowing device are arranged in the shell from top to bottom, the air blowing device comprises a first compression box connected with the powder mixing cavity and a second compression box connected with the paste mixing cavity, air can be respectively blown into the two cavities, a spiral conveyor is arranged at the bottom of the paste mixing cavity, a stirring device is arranged at the bottom of the powder mixing cavity, and a discharge hole of the powder mixing cavity is communicated with a feed inlet of the paste mixing cavity through a feed delivery pipe; this device can effectively solve when the compound graphite electrode raw materials mixes the stirring because the raw materials kind is many, and the mixing that the granularity is little caused is inhomogeneous, and the problem of the easy caking of thickener stirring makes the raw materials more even at the mixing stirring in-process to the product quality of compound graphite electrode has been improved.

Description

Compound graphite electrode batching mixing arrangement

Technical Field

The utility model belongs to the technical field of graphite electrode, concretely relates to compound graphite electrode batching mixing arrangement.

Background

The graphite electrode is made up by using petroleum coke and needle coke as raw material and coal pitch as binding agent through the processes of calcining, proportioning, kneading, pressing, roasting, graphitizing and machining, and is a conductor which can release electric energy in the form of electric arc in electric arc furnace to heat and melt furnace charge, and can be divided into ordinary power, high power and ultrahigh power according to its low mass index.

However, the composite graphite electrode has a large number of raw material types, and the raw material needs to be pulverized into a nano-scale powder before kneading and sufficiently mixed according to the requirement of product performance, so that the uniformity of the produced composite graphite electrode is often reduced due to insufficient mixing, and the performance is not stable, or the raw material powder has high density in the process of preparing paste, so that local agglomeration occurs when binders such as asphalt are added, and uniform mixing cannot be performed.

SUMMERY OF THE UTILITY MODEL

The utility model overcomes prior art's is not enough, provides a compound graphite electrode batching mixing arrangement, and the purpose is solved each raw materials of compound graphite electrode and is mixed inhomogeneous problem in the stirring that the in-process that thoughtlessly holds between the fingers appears.

In order to achieve the above purpose, the present invention is achieved by the following technical solutions.

A composite graphite electrode batching and mixing device comprises a shell, wherein a powder mixing cavity and a paste mixing cavity positioned at the lower part of the powder mixing cavity are arranged in the shell, a stirring device is arranged at the bottom of the powder mixing cavity, a feeding hopper is arranged at the top of the powder mixing cavity, and an inlet of the feeding hopper is positioned outside the shell; the bottom of the paste mixing cavity is provided with a screw conveyor, the side wall of the paste mixing cavity is provided with a discharge hole corresponding to the output end of the screw conveyor, and the side wall of the paste mixing cavity is also provided with a binder feed inlet; an air blowing device is arranged between the powder mixing cavity and the paste mixing cavity and comprises a first compression box and a second compression box, the first compression box and the second compression box are respectively provided with an air inlet pipe, the air inlet end of the air inlet pipe is arranged outside the shell, one side of the first compression box, far away from the air inlet pipe, is connected to the bottom of the powder mixing cavity through a first communicating pipe, and one side of the second compression box, far away from the air inlet pipe, is connected to the top of the paste mixing cavity through a second communicating pipe; the discharge hole of the powder mixing cavity is communicated with the feed inlet of the paste mixing cavity through a feed delivery pipe, and a powder delivery pump is arranged on the feed delivery pipe.

Furthermore, the powder mixing cavity is internally provided with a buffer interlayer, the feeding hopper is communicated with the buffer interlayer, the bottom of the buffer interlayer is a funnel-shaped outlet, and the funnel-shaped outlet is provided with an openable cover plate.

Furthermore, the screw conveyer comprises a screw conveying shaft arranged in the paste mixing cavity and a driving unit arranged outside the paste mixing cavity, and the driving motor is connected with the screw conveying shaft through a driving shaft to drive the screw conveying shaft to carry out screw propulsion.

Furthermore, the air inlet pipe of the first compression box and the air inlet pipe of the second compression box are respectively provided with a control valve, the air inlet pipe of the first compression box and the air inlet pipe of the second compression box are connected to an air inlet main pipe, and the air inlet main pipe is provided with an air inlet pump.

Furthermore, the stirring device comprises a stirring paddle arranged in the powder mixing cavity and a stirring driving motor arranged outside the powder mixing cavity, the stirring driving motor is connected with the stirring paddle through an output shaft, and a control part of the stirring driving motor is arranged on the outer wall of the shell.

The utility model discloses produced beneficial effect does for prior art.

The utility model discloses combine together powder mixing step and thickener mixing step, whole device compact structure is rationally distributed, the powder mixes the mode that adopts stirring stack gas mixture, make the more abundant mixture of nano-scale powdered material ability, the auxiliary mode through auger delivery and gas mixture in the thickener mixes the binder with the powder stirring and can carry the ejection of compact, whole compounding stirring process links up more closely and smoothly, when the thickener mixes, can close the valve of thickener mixing chamber discharge gate, the mode through the hob rotation is with binder and powder stirring, in-process, the gas that the compression box sent into constantly blows off the powder that gets into, make the stirring in-process should not agglomerate, after the misce bene, open thickener mixing chamber discharge gate valve and see the thickener outside to the casing. This device can effectively solve when the compound graphite electrode raw materials mixes the stirring because the raw materials kind is many, and the mixing that the granularity is little caused is inhomogeneous, and the problem of the easy caking of thickener stirring makes the raw materials more even at the mixing stirring in-process to the product quality of compound graphite electrode has been improved.

Drawings

Fig. 1 is a schematic structural view of the composite graphite electrode batching and mixing device of the present invention.

Wherein, 1 is the casing, 2 is the powder mixing chamber, 3 is the thickener mixing chamber, 4 is feed hopper, 5 is the discharge gate, 6 is the binder charge door, 7 is first compression case, 8 is the second compression case, 9 is the intake pipe, 10 is first communicating pipe, 11 is the second communicating pipe, 12 is the conveying pipeline, 13 is the powder delivery pump, 14 is the buffering interlayer, 15 is the apron, 16 is the auger delivery axle, 17 is driving motor, 18 is the control valve, 19 is the inlet manifold, 20 is the pump that admits air, 21 is the stirring rake, 22 is the stirring driving motor, 23 is the discharge gate valve.

Detailed Description

In order to make the technical problem, technical scheme and beneficial effect that the utility model will solve more clearly understand, combine embodiment and attached drawing, it is right to go on further detailed description the utility model discloses. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.

As shown in figure 1, the composite graphite electrode material mixing device comprises a stainless steel shell 1, a powder mixing cavity 2 and a paste mixing cavity 3 located at the lower part of the powder mixing cavity 2 are arranged in the shell 1, a stirring device is arranged at the bottom of the powder mixing cavity 2, the stirring device comprises a stirring paddle 21 arranged at the bottom in the powder mixing cavity 2 and a stirring driving motor 22 arranged outside the powder mixing cavity 2, the stirring driving motor 22 is connected with the stirring paddle 21 through an output shaft, and a control part of the stirring driving motor 22 is arranged on the outer wall of the shell 1. Be provided with buffering interlayer 14 in the powder mixing chamber 2, two parts about buffering interlayer 14 falls into powder mixing chamber 2, can prevent like this that the gas in the powder mixing chamber 2 from causing the influence to the feeding, and the bottom of buffering interlayer 14 is for leaking hopper-shaped export, and the outlet of leaking hopper-shaped is provided with apron 15 that can open. One end of the cover plate 15 is connected with a side wall shaft of the buffer interlayer 14 in a shaft mode, when powder enters, the cover plate 15 is pushed open under the action of gravity when the powder reaches a certain weight, and the cover plate 15 is automatically closed under the action of the torsion of a rotating shaft after feeding is finished. The top of the powder mixing cavity 2 is provided with a feeding funnel 4, and the inlet of the feeding funnel 4 is positioned outside the shell 1.

The bottom of the paste mixing cavity 3 is provided with a screw conveyor, the screw conveyor comprises a screw conveying shaft 16 arranged in the paste mixing cavity 3 and a driving motor 17 arranged outside the paste mixing cavity 3, and the driving motor 17 is connected with the screw conveying shaft 16 through a driving shaft to drive the screw conveying shaft to carry out screw propulsion. A discharge port 5 corresponding to the output end of the spiral conveying shaft 16 is arranged on the side wall of the paste mixing cavity 3, and a binder feeding port 6 is also arranged on the side wall of the paste mixing cavity 3; be provided with the air-blowing device between powder mixing chamber 2 and thickener mixing chamber 3, the air-blowing device includes first compression case 7 and second compression case 8, first compression case 7 and second compression case 8 are provided with intake pipe 9 respectively, be provided with control valve 18 on the intake pipe 9 of first compression case 7 and the intake pipe 9 of second compression case 8 respectively, the intake pipe 9 of first compression case 7 and the intake pipe 9 of second compression case 8 are connected on air intake manifold 19, be provided with air intake pump 20 on the air intake manifold 19. The air inlet end of the air inlet manifold 19 is arranged outside the shell 1, one side of the first compression box 7, far away from the air inlet pipe 9, is connected to the bottom of the powder mixing cavity 2 through a first communicating pipe 10, and one side of the second compression box 8, far away from the air inlet pipe 9, is connected to the top of the paste mixing cavity 3 through two second communicating pipes 11; the discharge hole of the powder mixing cavity 2 is communicated with the feed inlet of the paste mixing cavity 3 through a feed delivery pipe 12, and a powder delivery pump 13 is arranged on the feed delivery pipe 12.

The first compression box 7 and the second compression box 8 are respectively connected with an air compressor, air is sent into the air compressor through an air inlet pump 20, then the air enters the powder mixing cavity 2 through the first communication pipe 10 to stir the sent powder, and the powder is stirred by the cooperation of a stirring device at the bottom; when needs the thickener stirring, the gaseous supplementary effect that plays that gets into thickener mixing chamber 3 through second communicating pipe 11, mainly disperse the powder that gets into, make the rotatory rotation axis in bottom when stirring the binder that adds, the powder can be more for even attached to on the binder prevent that the powder from causing the caking when combining with the binder, wherein the diameter of first communicating pipe 10 and second communicating pipe 11 all is greater than the diameter that intake pipe 9 makes gaseous can get into powder mixing chamber 2 and thickener mixing chamber 3 smoothly, be provided with the filter screen respectively at first communicating pipe 10 and second communicating pipe 11 to filter the air.

This device combines together powder mixing step and thickener mixing step, whole device compact structure reasonable in layout, the powder mixes the mode that adopts stirring stack gas mixture, make the more abundant mixture of nano-scale powdery material ability, the auxiliary mode through auger delivery and gas mixture stirs binder and powder and can carry the ejection of compact in the thickener mixes, whole compounding stirring process links up more closely and smoothly, when the thickener mixes, can close 3 discharge gate valves 23 in thickener mixing chamber, stir binder and powder through the rotatory mode of hob, in-process, the gas that the compression box sent into constantly blows off the powder that gets into, make the stirring in-process should not agglomerate, after the misce bene, open 3 discharge gate valves 23 in thickener mixing chamber and see the thickener out to the casing outside. This device can effectively solve when the compound graphite electrode raw materials mixes the stirring because the raw materials kind is many, and the mixing that the granularity is little caused is inhomogeneous, and the problem of the easy caking of thickener stirring makes the raw materials more even at the mixing stirring in-process to the product quality of compound graphite electrode has been improved.

The above description is for further details of the present invention with reference to specific preferred embodiments, and it should not be understood that the embodiments of the present invention are limited thereto, and it will be apparent to those skilled in the art that the present invention can be implemented in a plurality of simple deductions or substitutions without departing from the scope of the present invention, and all such alterations and substitutions should be considered as belonging to the present invention, which is defined by the appended claims.

Claims

1. The composite graphite electrode batching and mixing device is characterized by comprising a shell (1), wherein a powder mixing cavity (2) and a paste mixing cavity (3) located at the lower part of the powder mixing cavity (2) are arranged in the shell (1), a stirring device is arranged at the bottom of the powder mixing cavity (2), a feeding hopper (4) is arranged at the top of the powder mixing cavity, and an inlet of the feeding hopper (4) is located outside the shell (1); a screw conveyor is arranged at the bottom of the paste mixing cavity (3), a discharge hole (5) corresponding to the output end of the screw conveyor is arranged on the side wall of the paste mixing cavity (3), and a binder charging hole (6) is further arranged on the side wall of the paste mixing cavity (3); an air blowing device is arranged between the powder mixing cavity (2) and the paste mixing cavity (3), the air blowing device comprises a first compression box (7) and a second compression box (8), an air inlet pipe (9) is respectively arranged on the first compression box (7) and the second compression box (8), the air inlet end of the air inlet pipe (9) is arranged outside the shell (1), one side, far away from the air inlet pipe (9), of the first compression box (7) is connected to the bottom of the powder mixing cavity (2) through a first communicating pipe (10), and one side, far away from the air inlet pipe (9), of the second compression box (8) is connected to the top of the paste mixing cavity (3) through a second communicating pipe (11); the discharge hole of the powder mixing cavity (2) is communicated with the feed inlet of the paste mixing cavity (3) through a feed delivery pipe (12), and a powder delivery pump (13) is arranged on the feed delivery pipe (12).

2. The composite graphite electrode ingredient mixing device according to claim 1, wherein a buffer interlayer (14) is arranged in the powder mixing chamber (2), the feeding hopper (4) is communicated with the buffer interlayer (14), the bottom of the buffer interlayer (14) is a funnel-shaped outlet, and the funnel-shaped outlet is provided with an openable cover plate (15).

3. The composite graphite electrode ingredient mixing device as claimed in claim 1, wherein the screw conveyor comprises a screw conveying shaft (16) arranged in the paste mixing chamber (3) and a driving motor (17) arranged outside the paste mixing chamber (3), and the driving motor (17) is connected with the screw conveying shaft (16) through a driving shaft to drive the screw conveying shaft to spirally advance.

4. The composite graphite electrode proportioning and mixing device of claim 1, wherein the air inlet pipe of the first compression box (7) and the air inlet pipe of the second compression box (8) are respectively provided with a control valve (18), the air inlet pipe of the first compression box (7) and the air inlet pipe of the second compression box (8) are connected to an air inlet manifold (19), and the air inlet manifold (19) is provided with an air inlet pump (20).

5. The composite graphite electrode material mixing device of claim 1, wherein the stirring device comprises a stirring paddle (21) arranged in the powder mixing chamber (2) and a stirring driving motor (22) arranged outside the powder mixing chamber (2), the stirring driving motor (22) is connected with the stirring paddle (21) through an output shaft, and a control part of the stirring driving motor (22) is arranged on the outer wall of the shell (1).