CN219319072U

CN219319072U - Zinc ash and smoke dust collecting device of crude zinc melting furnace

Info

Publication number: CN219319072U
Application number: CN202320285410.XU
Authority: CN
Inventors: 李继爽
Original assignee: Xuanwei Hongshu Metal Technology Co ltd
Current assignee: Xuanwei Hongshu Metal Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-07-07
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a zinc ash and smoke dust collecting device of a crude zinc melting furnace, which comprises a melting furnace and a slag removing door arranged on the side wall of the melting furnace, wherein a dust discharging pipe is arranged at the top of the melting furnace, an exhaust fan is arranged on the dust discharging pipe, an ash box is arranged on the outer side of the melting furnace below the slag removing door, an ash discharging hole is arranged on the side wall of the ash box outside the ash discharging hole, an ash discharging door is arranged on the side wall of the ash box outside the ash discharging hole, an ash falling hole is processed at the top of the ash box, an ash blocking cover is arranged above the ash box, the lower port of the ash blocking cover and one side facing the slag removing door are of an open structure, and an ash removing hole is processed on the side wall of the ash blocking cover away from one side of the slag removing door. The utility model has the advantages of convenient use, good collection effect, safety, environmental protection and obvious economic and social values.

Description

Zinc ash and smoke dust collecting device of crude zinc melting furnace

Technical Field

The utility model relates to the technical field of zinc smelting, in particular to a zinc ash smoke dust collecting device of a crude zinc melting furnace.

Background

Zinc powder is dark gray powdered metal zinc, is widely applied to industries such as metallurgy, chemical industry, fuel, medicine, pesticide, paint, electronics, food and the like, and is produced by adopting a pyrogenic zinc smelting method at present, and coarse zinc is required to be rectified in the production process of the zinc powder. The crude zinc generally contains 1% -3% of impurities, wherein the crude zinc contains antimony, lead, indium, gallium, copper, tin, germanium and iron with lower vapor pressure than zinc, and arsenic and cadmium with higher vapor pressure than zinc.

When the crude zinc ingot is liquefied in the melting furnace, a layer of scum is generated on the surface of the crude zinc liquid, in order to improve the purity of the crude zinc liquid and facilitate the subsequent zinc powder rectification, the scum is required to be removed, zinc ash smoke dust can escape simultaneously when the scum is removed, and if the crude zinc ingot is not collected, the surrounding environment can be polluted, and the health of workers can be threatened. In the prior art, the scum is removed by mainly manually holding a long-handle slag ladle, and the method has the advantages of low efficiency, poor working environment and high labor intensity, and on one hand, a large amount of zinc smoke dust overflows from a slag hole in the cleaning process, so that zinc resources are lost and the production environment is polluted. Therefore, the zinc ash and smoke dust collecting device of the crude zinc melting furnace, which is convenient to use, good in collecting effect, safe and environment-friendly, is developed and required objectively.

Disclosure of Invention

The utility model aims to provide a zinc ash and smoke dust collecting device of a crude zinc melting furnace, which is convenient to use, good in collecting effect, safe and environment-friendly.

The utility model aims at realizing the purposes, comprising a melting furnace and a slag removal door arranged on the side wall of the melting furnace, wherein the top of the melting furnace is provided with a dust exhaust pipe, the dust exhaust pipe is provided with an exhaust fan, the outside of the melting furnace below the slag removal door is provided with an ash box, the side wall of the ash box is provided with an ash discharge hole, the side wall of the ash box outside the ash discharge hole is provided with an ash discharge door, the top of the ash box is provided with an ash dropping hole, the upper part of the ash box is provided with an ash blocking cover, the lower port of the ash blocking cover and one side facing the slag removal door are of an open structure, and the side wall of the ash blocking cover far away from one side of the slag removal door is provided with an ash removal hole.

Further, a dust blocking cover with a downward opening is arranged on the outer side wall of the dust blocking cover above the dust removing opening.

Further, the bottom of the ash box is provided with a roller.

Further, the ash discharging door comprises a bottom plate and two L-shaped blocking strips, the two blocking strips are vertically and symmetrically arranged on two sides of the ash discharging opening, the bottom plate is arranged below the ash discharging opening, and a door plate is movably inserted between the two blocking strips.

Further, the top of keeping off the ash cover is provided with the lug.

Further, the side wall of the ash blocking cover is provided with a reinforcing rib.

Further, the end face of each open end of the ash blocking cover is provided with a high-temperature-resistant flexible sealing layer.

Further, the bottom of the ash box is obliquely arranged, and the ash discharge opening is positioned above the lower end of the bottom of the ash box.

When the scum of the melting furnace is required to be cleaned, the ash box is moved to the lower part of the slag removal door, one side surface of the ash box is abutted against the melting furnace for being convenient for fixing, then the slag removal door is quickly opened, one side of the opening of the ash blocking cover is abutted against the melting furnace, the lower end of the ash blocking cover is placed at the top of the ash box, the scum can be cleaned, the scum cleaned out of the melting furnace falls into the ash box from the ash dropping hole to be stored, meanwhile, when the scum is cleaned, a small part of zinc ash dust escapes into the ash blocking cover, a larger part of zinc ash continuously falls down and falls into the ash box from the ash dropping hole, the lighter part of zinc ash continuously rises and is temporarily gathered at the upper part of the ash blocking cover, and the smoke dust in the melting furnace is continuously extracted by the exhaust fan, so that the melting furnace is in a negative pressure state, and the smoke dust gathered in the ash blocking cover can reversely flow back into the melting furnace under the action of external atmospheric pressure. In summary, when the slag collecting device is used, the slag in the melting furnace can be cleaned and collected only by putting the ash box and the dust shield at the corresponding positions, and the slag can be removed when the slag collecting device is not used, so that the normal operation of the melting furnace is not affected, the slag collecting device is convenient to use, and the slag can be well collected; secondly, through the arrangement of the utility model, the diffusion of zinc ash and smoke dust can be effectively prevented, the physical health of surrounding workers can be ensured, and the surrounding environment can be prevented from being polluted. The utility model has the advantages of convenient use, good collection effect, safety, environmental protection and obvious economic and social values.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the ash box 5 according to the present utility model;

in the figure: 1-melting furnace, 2-slag removal door, 3-dust discharge pipe, 4-exhaust fan, 5-ash box, 6-ash discharge door, 7-ash dropping hole, 8-ash blocking cover, 9-ash cleaning opening, 10-ash blocking cover, 11-roller, 12-bottom plate, 13-baffle strip, 14-door plate, 15-lifting lug, 16-reinforcing rib and 17-high temperature resistant flexible sealing layer.

Description of the embodiments

The utility model is further described below with reference to the accompanying drawings, without limiting the utility model in any way, and any alterations or modifications based on the utility model are within the scope of the utility model.

As shown in fig. 1-2, the utility model comprises a melting furnace 1 and a slag removing door 2 arranged on the side wall of the melting furnace 1, wherein the melting furnace 1 is used for melting a crude zinc ingot in the prior art, so that a layer of scum can be generated on the surface of crude zinc liquid after the crude zinc ingot is melted by a subsequent lead tower and a cadmium tower, the slag removing door 2 can be cleaned, the slag removing door 2 is in a normally closed state and is opened when the scum is required to be cleaned, the slag removing door 2 is closed after the scum cleaning is finished, the top of the melting furnace 1 is provided with a dust exhaust pipe 3, the dust exhaust pipe 3 is provided with an exhaust fan 4, a certain amount of zinc ash smoke dust can be generated when the crude zinc ingot is melted, the exhaust fan 4 is started, the zinc ash smoke dust is discharged through the dust exhaust pipe 3, and the melting furnace 1 is in a negative pressure state due to the suction effect of the exhaust fan 4, the melting furnace 1 outside below the slag removal door 2 is provided with an ash box 5, the side wall of the ash box 5 is provided with an ash discharge hole, the ash box 5 is used for storing and cleaning scum, after the scum is filled, the scum is poured out through the ash discharge hole, the side wall of the ash box 5 outside the ash discharge hole is provided with an ash discharge door 6, the top of the ash box 5 is provided with an ash falling hole 7, the upper side of the ash box 5 is provided with an ash blocking cover 8, the lower port of the ash blocking cover 8 and the side facing the slag removal door 2 are of an open structure, the side wall of the ash blocking cover 8 far away from the slag removal door 2 is provided with an ash removal hole 9, ash removal staff stretches into the melting furnace 1 from the ash removal hole 9 by using tools to clean the scum, and in the utility model, the ash box 5 and the ash blocking cover 8 are of two mutually independent structures, are not fixedly connected, and can move independently and are convenient to use.

When the scum cleaning of the melting furnace 1 is needed, the ash box 5 is moved to the lower part of the slag removal door 2, one side surface of the ash box 5 is abutted against the melting furnace 1 for being convenient for fixing, then the slag removal door 2 is quickly opened, one open side of the ash blocking cover 8 is abutted against the outer side of the slag removal door 2 of the melting furnace 1, the lower end of the ash blocking cover 8 is placed on the top of the ash box 5, the scum cleaning can be carried out, the scum cleaned from the melting furnace 1 falls into the ash box 5 from the ash dropping hole 7 for storage, meanwhile, when the scum cleaning is carried out, a small part of zinc ash and dust escapes into the ash blocking cover 8, a part with larger mass in the zinc ash and dust continuously falls into the ash box 5, a part with lighter mass continuously rises, and is temporarily accumulated at the upper part in the ash blocking cover 8, and the dust in the melting furnace 1 is in a negative pressure state due to the fact that the exhaust fan 4 continuously extracts the dust in the melting furnace 1, and the dust in the ash blocking cover 8 is accumulated in the ash blocking cover 8 and returns to the melting furnace 1 under the action of the reverse atmosphere. In summary, when the utility model is used, the scum in the melting furnace 1 can be cleaned and collected only by putting the ash box 5 and the dust shield 8 at the corresponding positions, and the scum can be removed when the scum is not used, so that the normal operation of the melting furnace 1 is not affected, the use is convenient, and the scum can be better collected; secondly, through the arrangement of the utility model, the diffusion of zinc ash and smoke dust can be effectively prevented, the physical health of surrounding workers can be ensured, and the surrounding environment can be prevented from being polluted.

When the dust-blocking cover 10 with a downward opening is arranged on the outer side wall of the dust-blocking cover 8 above the dust-removing opening 9, a dust-removing tool is used to extend into the melting furnace 1 from the dust-removing opening 9 to clean scum, and a small part of dust can escape from the dust-removing opening 9, so that the dust-blocking cover 10 is arranged to prevent the dust from escaping from the dust-removing opening 9, and even if the dust escapes from the dust-removing opening 9, the dust can be collected in the dust-blocking cover 10 and finally returned, so that the environment-friendly performance of the dust-blocking cover is further improved, and the environmental pollution is prevented. In the ash removal process, the sight of an operator can be blocked by the dust blocking cover 10, in order to prevent the situation, the dust blocking cover 10 can be made of transparent materials, the operator can see the situation inside the melting furnace 1 through the dust blocking cover 10, and the ash removal operation can be conveniently and efficiently carried out.

The bottom of ash box 5 is provided with gyro wheel 11, and gyro wheel 11 can use structures such as universal wheel, and the removal of the ash box 5 of being convenient for is for use, optional gyro wheel 11 of taking the braking function.

The ash discharging door 6 comprises a bottom plate 12 and two L-shaped blocking strips 13, the two blocking strips 13 are vertically and symmetrically arranged on two sides of the ash discharging opening, the bottom plate 12 is arranged below the ash discharging opening, a door plate 14 is movably inserted between the two blocking strips 13, in order to facilitate operation, when in actual use, a handle is arranged on the door plate 14, in general, the door plate 14 is inserted between the two blocking strips 13, the ash discharging opening is blocked, ash leakage is prevented, when ash is discharged, the handle can be held, the door plate 14 can be pulled out, scum can be poured out from the ash discharging opening, when in actual use, the ash discharging door 6 with other structures can be selected, and when the opening and the closing are convenient, the ash discharging opening can be blocked.

In order to facilitate the lifting of the ash blocking cover 8, the top of the ash blocking cover 8 is provided with a lifting lug 15, and similarly, when in implementation, the ash box 5 can be provided with a corresponding lifting lug 15, so that the lifting and ash discharging operations of the ash box 5 are facilitated.

The reinforcing ribs 16 are arranged on the side wall of the ash blocking cover 8, and because the temperature of the scum and zinc ash smoke dust is higher, the ash blocking cover 8 is likely to deform and even be damaged due to high-temperature corrosion in the use process, and the reinforcing ribs 16 are arranged on the side wall of the ash blocking cover 8, so that the rigidity and strength of the ash blocking cover 8 can be improved, and the service life of the ash blocking cover 8 is further prolonged.

The end face of each open end of the ash blocking cover 8 is provided with a high-temperature-resistant flexible sealing layer 17, the high-temperature-resistant flexible sealing layer 17 is of the prior art, the high-temperature-resistant flexible sealing layer 17 is made of high-temperature-resistant flexible materials and has certain flexibility, the ash blocking cover 8 and the melting furnace 1 and the ash blocking cover 8 and the ash box 5 are tightly attached, gaps are eliminated, smoke dust is prevented from escaping from the gaps between the ash blocking cover 8 and the melting furnace 1, and sealing performance between the ash blocking cover 8 and the ash box 5 is improved.

In order to quickly and thoroughly pour out the scum in the ash box 5, the bottom of the ash box 5 is obliquely arranged, an ash discharge opening is positioned above the lower end of the bottom of the ash box 5, the scum moves out of the ash box 5 along a slope, and the scum is prevented from being detained at the bottom of the ash box 5 and cannot be thoroughly poured out.

Claims

1. The zinc ash and smoke dust collecting device of the crude zinc melting furnace comprises a melting furnace (1) and a slag removal door (2) arranged on the side wall of the melting furnace (1), and is characterized in that a dust exhaust pipe (3) is arranged at the top of the melting furnace (1), an exhaust fan (4) is arranged on the dust exhaust pipe (3), an ash box (5) is arranged on the outer side of the melting furnace (1) below the slag removal door (2), an ash discharge opening is formed in the side wall of the ash box (5), an ash discharge door (6) is arranged on the side wall of the ash box (5) on the outer side of the ash discharge opening, an ash falling hole (7) is formed in the top of the ash box (5), an ash blocking cover (8) is arranged above the ash box (5), the lower port of the ash blocking cover (8) and one side facing the slag removal door (2) are of an open structure, and the ash removal opening (9) is formed in the side wall of the ash blocking cover (8) on one side far away from the slag removal door (2).

2. The zinc ash and smoke dust collecting device of the crude zinc melting furnace according to claim 1, wherein a dust blocking cover (10) with a downward opening is arranged on the outer side wall of the dust blocking cover (8) above the ash removing opening (9).

3. The zinc ash and smoke dust collecting device of the crude zinc melting furnace according to claim 1, wherein the bottom of the ash box (5) is provided with rollers (11).

4. The zinc ash and smoke dust collecting device of the crude zinc melting furnace according to claim 1, wherein the ash discharging door (6) comprises a bottom plate (12) and two L-shaped baffle strips (13), the two baffle strips (13) are vertically and symmetrically arranged on two sides of an ash discharging hole, the bottom plate (12) is arranged below the ash discharging hole, and a door plate (14) is movably inserted between the two baffle strips (13).

5. The zinc ash and smoke dust collecting device of the crude zinc melting furnace according to claim 1, wherein the top of the ash blocking cover (8) is provided with a lifting lug (15).

6. The zinc ash and smoke dust collecting device of the crude zinc melting furnace according to claim 1, wherein the side wall of the ash blocking cover (8) is provided with a reinforcing rib (16).

7. The zinc ash and smoke dust collecting device of the crude zinc melting furnace according to claim 1, wherein a high-temperature-resistant flexible sealing layer (17) is arranged on the end face of each open end of the ash blocking cover (8).

8. The zinc ash and smoke dust collecting device of the crude zinc melting furnace according to claim 1, wherein the bottom of the ash box (5) is obliquely arranged, and the ash discharge opening is positioned above the lower end of the bottom of the ash box (5).