CN216925187U

CN216925187U - Complex smoke trapping device for smelting pot surface

Info

Publication number: CN216925187U
Application number: CN202220480677.XU
Authority: CN
Inventors: 香钦华; 周忠跃; 班莹; 张庆兰; 吴剑鹏; 黄炳宙; 黄耀展; 王明
Original assignee: Mengzi Mining And Metallurgy Co ltd
Current assignee: Mengzi Mining And Metallurgy Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-07-08
Anticipated expiration: 2032-03-07

Abstract

The utility model relates to a complex smoke trapping device for a smelting pot surface, which consists of a cover cap arranged on the edge opening of the smelting pot and a smoke pipeline connected with a dust collecting system, wherein the cover cap is divided into a feeding melting area, a stirring operation area, a smoke trapping area and a feeding slag salvaging operation area; the stirring operation area is arranged in the center of the cover top, and a stirring shaft sealing movable blade plate is arranged at the position for the inlet and the outlet of a stirring shaft or an alloy pump; the flue gas trapping area is arranged above the feeding melting area, is a cover plate fixed with a flue gas pipeline and is close to the stirring operation area; the feeding and slag-fishing area is the area on the cover top except the stirring operation area and the smoke collecting area, the feeding and slag-fishing operation area is provided with a plurality of movable blade plates, and the feeding melting area is provided with one or a plurality of movable blade plates hung on the cover top. The utility model has the advantages of easy manufacture and installation and convenient operation, can fully capture smoke gas to ensure the normal operation of the dust collection system, and does not influence the normal implementation of various operations of the pan surface platform.

Description

Complex smoke trapping device for smelting pot surface

Technical Field

The utility model relates to the field of metal smelting environment-friendly auxiliary equipment, in particular to a complex smoke trapping device for a smelting pot surface.

Background

In the process of refining and removing impurities in a metal smelting fire method, in order to obtain slag which is loose and has little metal or remove certain impurity metal in a targeted manner, materials such as chaff, rosin, sulfur, caustic soda and the like are added in the process of refining and removing impurities to reduce the specific gravity of scum and promote the separation and the settlement of molten liquid metal. Meanwhile, acid electrolyte and the like carried in electrolytic cathode educt or anode scrap during the return smelting form a large amount of low-temperature complex smoke containing acid, alkali and dust and water in the high-temperature smelting process, the operation environment of a boiler surface platform is deteriorated, low-temperature acid and alkali smoke is easy to condense and harden a dust collection cloth bag, equipment is corroded, a dust collection system cannot normally operate, and the smoke leaks in a production place, so that the environment and the health of operators are extremely unfavorable.

Taking lead refining as an example, as the pan surface operation involves complex operation actions such as feeding, melting, continuing, stirring, slag salvaging, lead fishing hook, adding auxiliary agent, measuring temperature, pumping lead liquid and the like, a method which can not affect the pan surface operation and can effectively trap the pan surface smoke dust is difficult to find. Aiming at the common problem, some factories adopt a semi-closed smoke trapping cover, and the trapping effect is poor due to large air leakage coefficient; in some factories, a blower is additionally arranged in front of a semi-closed flue gas cover to serve as a gas seal to lock flue gas, the blowing strength is difficult to realize random adjustment and change along with the fluctuation of the flue gas amount on the boiler surface, the flue gas is blown away or not blocked, the power consumption is increased unnecessarily, and the flue gas trapping effect is not greatly improved; even some factories adopt the whole pot surface production operation area to be sealed to perform air extraction and ventilation from the top of a building, and because the area is large, the air leakage coefficient is large, the air extraction power consumption is large, the effect is poor, and the health of workers is used as the sacrifice cost to maintain production. Therefore, how to find a flue gas trapping method which has good air draft and dust collection effects and does not influence the production operation of the pot surface is a technical problem of environmental protection in production which is urgently needed to be solved by technical personnel in the field.

Disclosure of Invention

The utility model aims to solve the problems and provides a complex smoke trapping device for a smelting pan surface, which is easy to manufacture and install, simple and convenient to operate, capable of fully trapping smoke to ensure the normal operation of a dust collecting system and not influencing the normal implementation of various operations of a pan surface platform, so that the defects in the prior art are overcome.

The complex smoke trapping device for the smelting pot surface is composed of a cover cap arranged at the edge opening of the smelting pot and a smoke pipeline connected with a dust collecting system, and is characterized in that the cover cap is divided into a feeding melting area, a stirring operation area, a smoke trapping area and a feeding slag salvaging operation area, wherein the feeding melting area is arranged on a cover wall connected with a feeding device; the stirring operation area is arranged in the center of the cover top, and a stirring shaft sealing movable blade plate is arranged at the position for the inlet and the outlet of a stirring shaft or an alloy pump; the flue gas capturing area is arranged above the feeding melting area, is a cover top plate fixed with a flue gas pipeline and is close to the stirring operation area; the feeding and slag salvaging area is an area on the cover top except the stirring operation area and the smoke gas capturing area, and a plurality of movable blade plates are arranged in the feeding and slag salvaging operation area.

The feeding melting area is provided with one or more movable blade plates hung on the cover top, and a return spring is arranged between each movable blade plate and the cover top.

The flue gas trapping area protrudes out of the stirring operation area so as to meet the height requirements of the materials to be melted and the flap plates in the feeding melting area.

The feeding and slag salvaging operation area is provided with a plurality of movable blade plates, and each movable blade plate is provided with a gripper which is convenient to open and close.

The number of the movable blade plates of the material feeding (namely the feeding of the auxiliary materials for slagging) slag fishing operation area is six, from back to front, the two movable blade plates are sequentially arranged in the two rear ends at the two sides of the smoke gas collecting area, the two middle movable blade plates at the two sides of the stirring operation area and the two front movable blade plates at the front of the stirring operation area, and the movable blade plates are symmetrically arranged so as to meet the requirements of feeding the auxiliary materials for slag fishing and observation. Due to the stirring effect of the stirrer, scum on the melt surface in the pot rotates all the time and floats on the surface of the alloy liquid, most of the scum can be fished out through the two movable blade plates at the front end, even one movable blade plate at the front end can be fished out completely, and other movable blade plates are only used for observing the scum fishing-out condition in the pot and the feeding condition of feeding and auxiliary materials. Therefore, the smoke gas can be prevented from leaking in the operation process of the whole production link, and the production workshop is clean, sanitary and environment-friendly.

The distance between the stirring operation area and the edge opening of the smelting pot is about 100mm, so that the problem that the failure rate of equipment is increased due to the fact that the shaft power of the stirrer is too large is avoided as much as possible, and meanwhile, the space of the smoke hood is compressed to ensure that smoke inside the smoke hood is well collected.

The sealed movable blade plate of the stirring shaft in the stirring operation area takes a shaft hole of the stirring machine as the center, an opening is formed in the top of the cover cap, the size of the opening ensures that the blade of the stirring machine and the lead pump cannot be influenced to enter and exit, and meanwhile, the supporting points of the movable blade plate are reserved on two sides of the opening and are connected through hinges so as to realize that the movable blade plate is kept horizontal and does not leak air after the stirring machine or the alloy pump is in place.

To avoid confusion, the present invention is synonymous with hood and smoke cage, and lead pump is synonymous with alloy pump. The loose-leaf plate is called loose leaf for short.

Compared with the prior art, the utility model has the following advantages:

1. the stirrer shaft sealing loose leaf is arranged at the center of the stirrer shaft hole at the top of the smoke hood, so that a stirrer or lead pump device can conveniently go in and out for use, and the loose leaf is closed after the device enters the position to ensure the tightness of the hole of the device shaft.

2. The flexible application of the loose leaves and the modeling of the circular smoke hood ensure the integral sealing effect of the smoke hood and solve the problem of smoke leakage and smoke emission in the production operation of the pot surface; in addition, the distance between the stirring operation area and the smoke hood of the feeding slag fishing operation area and the top end of the pot edge is less than 100mm, the volume in the smoke hood is greatly reduced, the air leakage rate is reduced, the smoke exhaust volume is favorably reduced, and the air exhaust effect is improved; thirdly, the reduction of the air suction volume not only reduces the power consumption, but also prevents the flue gas temperature from being sharply reduced due to the large amount of leaked cold air, avoids the phenomenon of low-temperature condensation, simultaneously solves the problems of hardening of a dust collecting cloth bag, corrosion of equipment and the like caused by condensation, and ensures the normal operation of a dust collecting system.

3. Implement the feed of petticoat pipe rear end, the slag is dragged for to the front end, each other does not influence, improves production efficiency.

4. The feeding of the pan surface does not need a crane, and the crane using load on the production site is reduced.

5. The stirrer frame is arranged outside the smoke hood and is isolated from the complex smoke environment in the smoke hood, so that the service life of the motor is prolonged.

6. The feeding loose leaf at the rear end of the smoke hood ensures smooth feeding, and the loose leaf automatically resets after feeding to ensure the sealing performance of the smoke hood.

7. 6 pieces of the scum dredging loose leaves at the top of the smoke hood, most of scum is fished out by opening 2 pieces of the loose leaves at the front end, and even the scum can be fished out by only opening 1 piece of the loose leaves at the front end. Other loose leaves are only used for observing the scum fishing condition in the pot and are opened for a short time, the 2 loose leaves at the rear end are only used for observing the feeding and melting conditions, and the whole production operation environment is kept without smoke leakage all the time.

8. The dust collecting system is simple to manufacture and install, flexible and convenient to operate and use, good in smoke collecting effect, and capable of ensuring normal operation of dust collecting system equipment and emission of smoke reaching the standard in environmental protection.

Therefore, the utility model realizes the purposes of easy manufacture and installation, simple and convenient operation, full smoke collection, normal operation of the dust collection system and no influence on the normal implementation of various operations of the pan surface platform.

Drawings

FIG. 1 is a schematic front view of the connection of the apparatus of the present invention.

Fig. 2 is a schematic left side view of the apparatus of the present invention in connection therewith.

FIG. 3 is a schematic top view of the apparatus of the present invention in connection therewith.

FIG. 4 is a top view of the sealing flap portion of the mixing shaft of the present invention.

In fig. 1-4, the parts included are numbered as follows:

1-a chain conveyor; 2-stirrer (or lead pump); 3-sealing the loose leaves by the stirring shaft; 4-feeding loose leaves at the rear end of the smoke hood; 5-smoke hood; 6-smelting a pot; 7-anode scrap or lead precipitation; 8-feeding roller frame; 9-a roller; 10-flue gas outlet pipe; 11-operating a flap at the top of the smoke hood; 12-flap handle.

Detailed Description

The utility model is further described with reference to the following figures and examples. It should be noted that the specific embodiments of the present invention are only for clearly describing the technical solutions, and should not be taken as a limitation to the scope of the present invention.

Referring to fig. 1-4, a method and a device for trapping complex smoke on the surface of a smelting pot are disclosed, wherein the device is made of steel plates and the like, is arranged on the edge opening of the smelting pot and mainly comprises a feeding device and a smoke hood 5 body.

The feeding device comprises a chain conveyor 1, a feeding roller frame 8, rollers 9 and the like, and is an existing device which is not detailed in the specification.

The working process of the utility model is as follows:

firstly, the anode scrap or the separated lead 7 is conveyed to the opening position of the smoke hood 5 corresponding to the feeding flap 4 at the rear end of the smoke hood through the chain conveyor 1, the anode scrap or the separated lead 7 is taken away from the chain conveyor 1 to enter a feeding roller frame 8 through a hydraulic jacking and driving mechanism on the chain conveyor 1, and the anode scrap or the separated lead 7 slides into the smelting pot 6 for melting through a roller 9 by utilizing the self weight. When enough lead liquid exists in the smelting pot, the stirring shaft sealing loose leaf 3 is opened, the stirrer 2 is installed and fixed, and the stirring shaft sealing loose leaf 3 is closed to keep the sealing performance of the smoke hood. Starting the stirrer 2 to stir the lead liquid to accelerate heat transfer for fluxing; the melting condition of the material is observed through 2 top loose leaves at the rear end of the smoke hood, and simultaneously, medicament (auxiliary material) is added at regular time according to the production process through the top operation loose leaves 11 of each smoke hood to remove impurities and produce scum. The complex flue gas generated in the process is introduced into a dust collection cloth bag box through a flue gas outlet pipe 10 to filter heavy metal dust and recycle the heavy metal dust. Because the temperature of the flue gas is high, the acidic moisture in a gaseous state passes through the filter cloth and then is collected by the water film dust collector, and the clean flue gas reaches the standard and is discharged.

Secondly, when scum is formed, the stirrer 2 is continuously operated, and the movable blade handle 12 is used for opening the movable blade 11 at the top of 1 or 2 smoke hoods at the front end of the smoke hood to carry out manual scum fishing operation while stirring until scum is fished out completely.

And finally, the stirrer 2 is dismantled and replaced by a lead pump, and after the lead pump is installed and fixed according to the installation steps, clean lead liquid is pumped out of the smelting pot 6 for ingot casting and other operations.

The embodiment proves that the utility model is simple to manufacture and install, and flexible and convenient to operate and use. Compared with the prior art, the method realizes that the operations of feeding, dosing, stirring, slag fishing and lead discharging are not influenced mutually, and improves the working efficiency; the operation environment is improved, and the occupational health of workers is facilitated; the key common problem that the low-temperature corrosive smoke affects the service life of dust collecting equipment is solved.

The above description is for the purpose of illustrating the preferred embodiments of the present invention, but the present invention is not limited thereto, and all equivalent changes and modifications within the technical spirit of the present invention are included in the scope of the present invention.

Claims

1. A smelting pot surface complex flue gas trapping device comprises a cover cap arranged on the edge opening of a smelting pot and a flue gas pipeline connected with a dust collecting system, and is characterized in that the cover cap is divided into a feeding melting area, a stirring operation area, a flue gas trapping area and a feeding slag salvaging operation area, wherein the feeding melting area is arranged on a cover wall connected with a feeding device; the stirring operation area is arranged in the center of the cover top, and a stirring shaft sealing movable blade plate is arranged at the position for the inlet and the outlet of a stirring shaft or an alloy pump; the flue gas capturing area is arranged above the feeding melting area, is a cover top plate fixed with a flue gas pipeline and is close to the stirring operation area; the feeding and slag salvaging area is an area on the cover top except the stirring operation area and the smoke gas capturing area, and a plurality of movable blade plates are arranged in the feeding and slag salvaging operation area.

2. The complex fume collecting device for smelting pot surface as set forth in claim 1, wherein the feeding and melting area has one or more movable blade plates suspended from the hood top, and a return spring is provided between each blade plate and the hood top.

3. The complex smoke trapping device for the smelting pot surface as claimed in claim 1, wherein the smoke trapping region protrudes from the stirring operation region to meet the height requirements of the materials to be melted and the flap plates in the feeding melting region.

4. The complex smoke trapping device for the smelting pot surface as claimed in claim 1, wherein the feeding and slag-removing operation area is provided with a plurality of movable blade plates, and each movable blade plate is provided with a hand grip.

5. The complex smoke trapping device for the smelting pot surface as claimed in claim 4, wherein the number of the movable blade plates in the feeding operation area is six, from back to front, the two rear end plates are arranged on two sides of the smoke trapping area, the two middle plates are arranged on two sides of the stirring operation area, and the two front end plates are arranged in front of the stirring operation area.

6. The complex smoke trapping device for the surfaces of the smelting pots as claimed in claim 1, wherein the distance between the stirring operation area and the edge opening of the smelting pot is determined on the principle that the shaft of the stirrer is too long, the shaft power is too large, the failure rate of equipment is increased, and meanwhile, the space of the smoke hood is compressed to ensure that smoke inside the smoke hood is well trapped.

7. The complex flue gas trapping device for the smelting pot surface as claimed in claim 1, wherein the flap plate of the stirring operation area is centered on the shaft hole of the stirrer, an opening is formed in the top of the cover cap, the size of the opening ensures that the blade of the stirrer and the alloy pump are not influenced to enter and exit, and the support points of the flap plate are reserved on two sides of the opening and are connected through hinges.