CN118080841A - A system for recovering molten iron ladle smoke - Google Patents

Abstract

The invention relates to the technical field of casting production, in particular to a recycling system of foundry ladle smoke, which is applied to absorbing the smoke generated upwards by a foundry ladle and comprises a smoke absorbing mechanism and a recycling mechanism, wherein the smoke absorbing mechanism is arranged on a lifting hook for hanging the foundry ladle, and is provided with a smoke collecting port positioned above the foundry ladle and a smoke guide pipe which can extend to a hanging bracket; the invention discloses a device for automatically controlling molten iron state, which comprises a lifting hook, a smoke guide pipe, a smoke absorbing mechanism, a smoke collecting mechanism, a smoke recycling mechanism and an automatic system.

Description

A system for recovering molten iron ladle smoke

Technical Field

The invention relates to the technical field of casting production, in particular to a fume recovery system for a molten iron ladle.

Background technique

A lot of smoke is generated during the process of injecting molten iron, moving, slagging, and dumping the molten iron ladle. Many of these smokes are gasified solid particles. Directly discharging them into the air will pollute the environment, endanger the operators on site, and also waste resources. The smoke generated during the process of injecting molten iron, moving, slagging, and dumping the molten iron ladle is directly extracted and discharged into the atmosphere, which will pollute the environment, endanger the operators on site, and also waste resources.

Summary of the invention

In view of the above problems, a ladle smoke recovery system is provided. By arranging a smoke-absorbing mist mechanism capable of absorbing smoke above the ladle, and discharging the smoke absorbed by the smoke-absorbing mist mechanism into a recovery mechanism, the problem that the smoke generated by the ladle during operation is directly discharged to pollute the working environment and the atmospheric environment is solved.

In order to solve the problems of the prior art, the present invention provides a system for recovering smoke from a molten iron ladle, which is used for absorbing the smoke generated upward from the molten iron ladle, and comprises a smoke-collecting mechanism and a recovery mechanism, wherein the smoke-collecting mechanism is arranged on a hook for hanging the molten iron ladle, the smoke-collecting mechanism has a smoke collecting port located above the molten iron ladle, and a smoke guiding pipe that can be extended to the hanger, the smoke generated from the molten iron ladle is collected by the smoke collecting port and discharged to a designated location through the smoke guiding pipe; the recovery mechanism is arranged on a hanger capable of lifting and lowering the hook, the recovery mechanism has a recovery chamber capable of absorbing smoke, and the smoke outlet of the smoke guiding pipe extends upward into the recovery chamber.

Preferably, the smoke guide pipe is also provided with a component detection mechanism capable of detecting smoke components.

Preferably, the smoke smoke mechanism also includes a smoke smoke hood, which has a collection chamber with an inner diameter that gradually increases from top to bottom, a smoke collecting port for collecting smoke is formed at the bottom of the smoke smoke hood, the top of the smoke smoke hood is closed and connected to the smoke inlet of the smoke guide pipe, a hook is arranged in the collection chamber, and a hanging rope passes through the top of the smoke smoke hood and is connected to the hook.

Preferably, the smoke mist collecting mechanism further comprises a blower, the air inlet of the blower is connected to the smoke outlet of the smoke guide pipe, and the air outlet of the blower extends to the recovery mechanism through a pipeline.

Preferably, the recovery mechanism comprises a recovery pool and an adsorption liquid injected into the recovery pool, and the smoke in the smoke guide pipe is passed into the adsorption liquid.

Preferably, the smoke smoke mechanism also includes a rotary drive assembly, a lower rotating ring and a connecting rod, the rotary drive assembly is arranged at the upper part of the collecting chamber; the lower rotating ring is coaxially rotatably arranged with the smoke smoke cover at the bottom of the rotary drive assembly, and the outer circumferential surface of the lower rotating ring is provided with a first fan blade extending radially thereof; the top end of the connecting rod is connected to the driving working end of the rotary drive assembly, and the bottom end of the connecting rod is fixedly connected to the top end of the lower rotating ring, and when the lower rotating ring rotates in the smoke smoke cover, the air at the bottom of the lower rotating ring flows upward.

Preferably, the inner wall of the collecting chamber is provided with a fixed edge, and the rotating drive assembly includes an upper rotating ring, a gear ring, a gear and a motor; the upper rotating ring is coaxially rotatably arranged at the top end of the fixed edge, and the top end of the connecting rod is fixedly connected to the bottom end of the upper rotating ring; the gear ring is coaxially fixedly arranged at the top end of the upper rotating ring; the gear is rotatably arranged on the outside of the smoking hood, the gear passes through the smoking hood and meshes with the gear ring; the motor is arranged on the outside of the smoking hood, and the output shaft of the motor is coaxially fixedly connected to the gear.

Preferably, the smoke mist emitting mechanism further comprises a second fan blade, which is circumferentially distributed between the upper rotating ring and the lower rotating ring. When the second fan blade rotates, smoke flows from the bottom of the collecting chamber to the top of the collecting chamber.

Preferably, the smoking hood includes a fixed cylinder, a top cover and a conical hood, the axis of the fixed cylinder is vertically arranged on the outside of the hook, a fixed ring is arranged at the bottom end of the inner circumference of the fixed cylinder, and the upper rotating ring is rotatably arranged on the top of the fixed ring; the top cover is coaxially fixedly arranged on the top of the fixed cylinder, the lifting rope passes through the top cover and is connected to the hook; the conical hood is arranged at the bottom end of the fixed cylinder.

Preferably, the smoke extractor mechanism also includes a sealing tube and a sealing ring. The sealing tube is coaxially and fixedly arranged on the inner periphery of the gear ring. The top end of the sealing tube extends horizontally to the top of the gear ring and then extends upward to form a connecting tube close to the inner wall of the fixed tube. The sealing ring is coaxially sleeved on the outer wall of the connecting tube, and the sealing ring has an interference fit with the inner circumferential surface of the fixed tube.

Compared with the prior art, the present invention has the following beneficial effects:

The present invention installs a smoke-absorbing mist mechanism on a hook for suspending a molten iron ladle, so that the smoke generated by the molten iron ladle during operation can be sucked into a recovery mechanism by the smoke-absorbing mist mechanism, which can effectively prevent the smoke from spreading into the working environment and affecting the operators. The recovery mechanism can also recycle and reuse the smoke, thereby protecting the environment and saving resources. At the same time, the smoke is fed back to the automation system through a component detection mechanism, so that the state of the molten iron can be grasped.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front view of a ladle fume recovery system.

FIG. 2 is a stereoscopic view of a ladle fume recovery system from a first viewing angle.

FIG. 3 is a stereoscopic view of a ladle fume recovery system from a second viewing angle.

FIG. 4 is a cross-sectional view of a ladle fume recovery system.

FIG. 5 is a partial enlarged view of point A in FIG. 4 .

FIG. 6 is a three-dimensional exploded view of a smoke-smoke mechanism in a ladle smoke recovery system.

FIG. 7 is a stereoscopic view of the upper and lower rotating rings and the first fan blade in a ladle fume recovery system.

The numbers in the figure are: 11, molten iron ladle; 12, hook; 13, lifting rope; 2, smoking mist mechanism; 21, smoke guide pipe; 22, smoking hood; 221, fixing cylinder; 222, top cover; 223, conical hood; 23, blower; 24, rotary drive assembly; 241, upper rotating ring; 242, gear ring; 243, gear; 244, motor; 25, lower rotating ring; 251, first fan blade; 26, connecting rod; 27, second fan blade; 28, sealing cylinder; 281, connecting cylinder; 29, sealing ring; 3, recovery mechanism; 4, component detection mechanism.

Detailed ways

In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

As shown in Figures 1, 2 and 3, this application provides:

A smoke recovery system for a ladle 11 is used to absorb the smoke generated upward from the ladle 11, and is characterized in that it includes a smoke collecting mechanism 2 and a recovery mechanism 3, wherein the smoke collecting mechanism 2 is arranged on a hook 12 for hanging the ladle 11, the smoke collecting mechanism 2 has a smoke collecting port located above the ladle 11, and a smoke guide pipe 21 that can be extended to the hanger, the smoke generated by the ladle 11 is collected by the smoke collecting port and discharged to a designated location through the smoke guide pipe 21; the recovery mechanism 3 is arranged on a hanger that can lift the hook 12, the recovery mechanism 3 has a recovery chamber that can absorb smoke, and the smoke outlet of the smoke guide pipe 21 extends upward into the recovery chamber.

During the molten iron pouring process, some smoke will be produced due to high temperature and chemical reactions. Here are some possible causes of smoke: Combustion products: When molten iron comes into contact with air, the iron and other metal components in it may react with oxygen to form oxides. This will produce some combustion products and smoke, such as carbon dioxide, iron oxide, etc. Volatile matter: In the molten iron, there may be some organic substances, such as lubricants, degreasers, coolants, etc. When the molten iron is heated, these organic substances may evaporate and produce some visible smoke. Metal vapor: Under high temperature, the metal components in the molten iron may partially evaporate and exist in the smoke in the form of tiny metal particles. These metal particles are potentially harmful to human health and need to be protected. Silicide smoke: Molten iron often contains silicon elements. When molten iron comes into contact with sand materials, silicate smoke will be produced. Silicide smoke may cause irritation to the human respiratory system and eyes, and appropriate protective measures need to be taken. The generation of these fumes is caused by physical and chemical reactions during the molten iron pouring process. In order to ensure a safe and healthy working environment, it is necessary to reasonably manage the generation of smoke and take appropriate ventilation and protective measures to reduce potential hazards to workers.

The recovery mechanism 3 is arranged on a hanger for lifting the hook 12. When the hanger drives the hook 12 to move, the entire recovery system moves synchronously, and the smoke guide pipe 21 is flexible and retractable, so that when the hook 12 drives the smoke extraction mechanism 2 to descend, the smoke guide pipe 21 can be produced in the vertical direction. The smoke guide pipe 21 can be a retractable corrugated tube.

During the operation of the molten iron ladle 11, smoke is generated and gradually permeates the working environment, and the smoke-absorbing mist mechanism 2 is started, which can absorb the smoke and introduce the smoke into the recovery mechanism 3, which recovers the smoke.

In this embodiment, a smoke-absorbing mist mechanism 2 is installed on a hook 12 for suspending the molten iron ladle 11, so that the smoke generated by the molten iron ladle 11 during operation can be sucked into the recovery mechanism 3 by the smoke-absorbing mist mechanism 2, which can effectively prevent the smoke from spreading into the working environment and affecting the operators. The recovery mechanism 3 can also recycle and reuse the smoke, thereby protecting the environment and saving resources.

As shown in FIG. 1 , the smoke guide pipe 21 is also provided with a component detection mechanism 4 capable of detecting smoke components.

The component detection mechanism 4 is a smoke component detection sensor, which is composed of one or more smoke sensors and can be connected to the main controller to detect the components of the smoke in the smoke guide pipe 21, thereby feeding back to the automation system to monitor the state of the molten iron.

As shown in Figures 2 and 6, the smoking mist mechanism 2 also includes a smoking hood 22, which has a collecting chamber with an inner diameter that gradually increases from top to bottom. The bottom end of the smoking hood 22 forms a smoke collecting port for collecting smoke. The top end of the smoking hood 22 is closed and connected to the smoke inlet of the smoke guide pipe 21. The hook 12 is set in the collecting chamber, and the hanging rope 13 passes through the top of the smoking hood 22 and is connected to the hook 12.

The smoking hood 22 is arranged on the hook 12, and the hook 12 suspends the molten iron ladle 11 for movement, and the smoking hood 22 is arranged above the molten iron ladle 11 in an umbrella shape, so that most of the smoke generated by the molten iron ladle 11 during operation can be gathered by the smoking hood 22 and gradually accumulated on the top of the collecting chamber of the smoking hood 22, and the smoke guide pipe 21 can introduce the smoke on the top of the collecting chamber into the recovery mechanism 3, and the recovery mechanism 3 recovers the smoke.

As shown in FIG. 4 , the smoke-smoking mechanism 2 further includes a blower 23 , the air inlet of the blower 23 is connected to the smoke outlet of the smoke guide pipe 21 , and the air outlet of the blower 23 extends to the recovery mechanism 3 through a pipeline.

When the blower 23 is started, the blower 23 can suck the smoke duct 21, so that the smoke duct 21 is in a pressure environment, and the smoke in the smoking hood 22 can be sucked into the smoke duct 21, and the smoke is blown into the recovery mechanism 3 through the blower 23, so that the recovery mechanism 3 recovers the smoke.

As shown in FIG. 3 , the recovery mechanism 3 includes a recovery pool and an adsorption liquid injected into the recovery pool, and the smoke in the smoke guide pipe 21 flows into the adsorption liquid.

The recovery pool is filled with adsorption liquid, which can absorb smoke. Using appropriate liquid absorbents, such as chemical solvents, adsorbents or detergents, organic substances in the smoke can be adsorbed.

As shown in Figures 4, 5 and 6, the smoking mist mechanism 2 also includes a rotary drive assembly 24, a lower rotating ring 25 and a connecting rod 26. The rotary drive assembly 24 is arranged at the upper part of the collecting chamber; the lower rotating ring 25 is coaxially rotatably arranged at the bottom of the rotary drive assembly 24 with the smoking hood 22, and a first fan blade 251 extending radially thereof is arranged on the outer circumferential surface of the lower rotating ring 25; the top end of the connecting rod 26 is connected to the driving working end of the rotary drive assembly 24, and the bottom end of the connecting rod 26 is fixedly connected to the top end of the lower rotating ring 25. When the lower rotating ring 25 rotates in the smoking hood 22, the air at the bottom of the lower rotating ring 25 flows upward.

In order to allow the smoke generated by the ladle 11 to be quickly introduced into the collecting chamber, the rotating drive assembly 24 is started so that the working end of the rotating drive assembly 24 drives the lower rotating ring 25 to rotate in the collecting chamber through the connecting rod 26, and the first fan blade 251 is provided on the outer circumferential surface of the lower rotating ring 25, so that the first fan blade 251 rotates in the collecting chamber, and the first fan blade 251 guides the gas at the bottom to flow upward when rotating, so that the top of the ladle 11 is in a low pressure state, and the smoke generated by the molten iron in the ladle 11 will flow upward and be collected by the collecting hood, which can effectively increase the drainage speed of the smoke.

As shown in Figure 5, the inner wall of the collecting chamber is provided with a fixed edge, and the rotating drive assembly 24 includes an upper rotating ring 241, a gear ring 242, a gear 243 and a motor 244; the upper rotating ring 241 is coaxially rotatably arranged at the top end of the fixed edge, and the top end of the connecting rod 26 is fixedly connected to the bottom end of the upper rotating ring 241; the gear ring 242 is coaxially fixedly arranged at the top end of the upper rotating ring 241; the gear 243 is rotatably arranged on the outside of the smoking hood 22, the gear 243 penetrates the smoking hood 22 and meshes with the gear ring 242; the motor 244 is arranged on the outside of the smoking hood 22, and the output shaft of the motor 244 is coaxially fixedly connected to the gear 243.

When it is necessary to rotate the lower rotating ring 25 in the collection hood, start the motor 244 so that the output shaft of the motor 244 drives the gear 243 to rotate on the outside of the smoke hood 22, and the gear 243 passes through the smoke hood 22 and meshes with the gear ring 242, so that the gear ring 242 can rotate in the smoke hood 22, the gear ring 242 is connected to the upper rotating ring 241, and the upper rotating ring 241 is connected to the lower rotating ring 25 through the connecting rod 26, so that the upper rotating ring 241 drives the lower rotating ring 25 to rotate in the smoke hood 22, so that the first fan blade 251 on the peripheral side of the lower rotating ring 25 can rotate and drive the air to flow upward.

As shown in FIG. 7 , the smoke misting mechanism 2 further includes a second blade 27, which is circumferentially distributed between the upper rotating ring 241 and the lower rotating ring 25. When the second blade 27 rotates, smoke flows from the bottom of the collecting chamber to the top of the collecting chamber.

The smoke is guided into the collection hood by the rotating first fan blade 251. In order to facilitate the concentrated discharge of the smoke into the smoke guide pipe 21, when the upper rotating ring 241 drives the lower rotating ring 25 to rotate in the collection chamber through the connecting rod 26, the second fan blade 27 rotates, so that the rotating second fan blade 27 can guide the smoke in the collection chamber to flow into the internal top port of the collection hood, thereby discharging the smoke into the recovery mechanism 3 through the smoke guide pipe 21.

As shown in Figure 6, the smoking hood 22 includes a fixed cylinder 221, a top cover 222 and a conical cover 223. The axis of the fixed cylinder 221 is vertically arranged on the outside of the hook 12, a fixed ring is arranged at the bottom end of the inner circumference of the fixed cylinder 221, and the upper rotating ring 241 is rotatably arranged on the top of the fixed ring; the top cover 222 is coaxially fixedly arranged on the top of the fixed cylinder 221, and the lifting rope 13 passes through the top cover 222 and is connected to the hook 12; the conical cover 223 is arranged at the bottom end of the fixed cylinder 221.

The hook 12 passes through the fixed tube 221 and extends to the bottom of the fixed tube 221. A bolt is provided on the outside of the fixed tube 221. The bolt is threadedly connected to the fixed tube 221, and the inner end of the bolt abuts against both sides of the hook 12 to ensure that the hook 12 is located in the center of the fixed tube 221. Then the conical cover 223 is set at the bottom end of the fixed tube 221, and the top cover 222 is set at the top end of the fixed tube 221, so that the inner cavity of the fixed tube 221 and the inside of the conical cover 223 form a collection cavity that can collect smoke.

As shown in Figures 5 and 6, the smoking mist mechanism 2 also includes a sealing cylinder 28 and a sealing ring 29. The sealing cylinder 28 is coaxially fixedly arranged on the inner periphery of the gear ring 242. The top of the sealing cylinder 28 extends horizontally to the top of the gear ring and then extends upward to form a connecting cylinder 281 close to the inner wall of the fixed cylinder 221. The sealing ring 29 is coaxially sleeved on the outer wall of the connecting cylinder 281, and the sealing ring 29 is interference fit with the inner circumferential surface of the fixed cylinder 221.

Because the gear 243 passes through the smoke hood 22 and meshes with the gear ring 242, an escape port is provided on the smoke hood 22. After entering the smoke hood 22, the smoke will overflow outward through the escape port. Therefore, the escape port needs to be closed to prevent the smoke from overflowing outward through the escape port. The sealing cylinder 28 is coaxially and fixedly arranged in the gear ring 242, so that the gear ring 242 can drive the sealing cylinder 28 to rotate synchronously, and the top of the sealing cylinder 28 extends horizontally to the top of the gear ring and then extends upward. The sealing ring 29 is sleeved on the outer circumferential surface of the connecting cylinder 281 and is interference fit with the inner wall of the fixed cylinder 221, so that the connecting cylinder 281 is higher than the escape port, and at the same time, the smoke of the fixed cylinder 221 can be prevented from overflowing outward through the escape port.

The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims (10)

1. A recycling system of ladle smoke is applied to absorbing the smoke generated upwards by a ladle and is characterized by comprising a smoke absorbing mechanism and a recycling mechanism,

The smoke absorbing fog mechanism is arranged on a lifting hook for hanging the ladle, and is provided with a smoke collecting port positioned above the ladle and a smoke guiding pipe which can extend to the lifting frame, and smoke generated by the ladle is collected by the smoke collecting port and is discharged to a designated place through the smoke guiding pipe;

the recovery mechanism is arranged on the hanging bracket capable of lifting the hanging hook, the recovery mechanism is provided with a recovery cavity capable of absorbing smoke, and the smoke outlet of the smoke guide pipe extends upwards into the recovery cavity.

2. The ladle fume recycling system according to claim 1, wherein the fume guide pipe is further provided with a component detecting mechanism capable of detecting a fume component.

3. A ladle fume recycling system according to claim 1 or 2, wherein the fume suction mechanism further comprises a fume suction hood, the fume suction hood is provided with a collection cavity with an inner diameter gradually increasing from top to bottom, a fume collecting port for collecting fume is formed at the bottom end of the fume suction hood, the top end of the fume suction hood is closed and connected with the fume inlet of the fume guide pipe, the lifting hook is arranged in the collection cavity, and the lifting rope penetrates through the top of the fume suction hood and is connected with the lifting hook.

4. A ladle fume recycling system according to claim 3, wherein the fume absorbing mechanism further comprises a blower, the air inlet of the blower is communicated with the fume outlet of the fume guiding tube, and the air outlet of the blower extends into the recycling mechanism through a pipeline.

5. A ladle fume recovery system according to claim 1 wherein the recovery means comprises a recovery tank and an adsorption liquid injected into the recovery tank, the fume in the fume guide tube being introduced into the adsorption liquid.

6. A ladle fume recovery system as recited in claim 3, wherein the fume extractor further comprises a rotary drive assembly, a lower rotary ring and a connecting rod,

The rotary driving assembly is arranged at the upper part of the collecting cavity;

the lower rotating ring and the smoke suction cover are coaxially arranged at the bottom of the rotary driving assembly in a rotating way, and the outer circumferential surface of the lower rotating ring is provided with first fan blades extending along the radial direction of the lower rotating ring;

the top of connecting rod is connected with the drive operating end of rotary drive subassembly, and the bottom of connecting rod and the top fixed connection of lower swivel becket, and when the swivel becket was rotatory in the smoke hood down, the air of swivel becket bottom upwards flowed.

7. The ladle fume recovery system according to claim 6, wherein the inner wall of the collection chamber is provided with a stationary rim, and the rotary drive assembly comprises an upper rotary ring, a toothed ring, a gear and a motor;

The upper rotating ring is coaxially and rotatably arranged at the top end of the fixed edge, and the top end of the connecting rod is fixedly connected with the bottom end of the upper rotating ring;

The gear ring is coaxially and fixedly arranged at the top end of the upper rotating ring;

the gear is rotationally arranged at the outer side of the smoke suction cover, penetrates through the smoke suction cover and is meshed with the toothed ring;

The motor is arranged at the outer side of the smoke suction cover, and an output shaft of the motor is fixedly connected with the gear coaxially.

8. The ladle fume recovery system of claim 7, wherein the fume extractor further comprises a second fan circumferentially disposed between the upper and lower rotatable rings, the fume flowing from the bottom of the collection chamber to the top of the collection chamber as the second fan rotates.

9. A ladle fume recovery system as recited in claim 7, wherein the fume hood comprises a stationary barrel, a top cover, and a conical hood,

The axis of the fixed cylinder is vertically arranged at the outer side of the lifting hook, the bottom end of the inner circumferential surface of the fixed cylinder is provided with a fixed ring, and the upper rotating ring is rotationally arranged at the top end of the fixed ring;

the top cover is coaxially and fixedly arranged at the top end of the fixed cylinder, and the lifting rope penetrates through the top cover and is connected with the lifting hook;

The conical cover is arranged at the bottom end of the fixed cylinder.

10. The ladle fume recycling system according to claim 9, wherein the fume sucking mechanism further comprises a sealing cylinder and a sealing ring, the sealing cylinder is coaxially and fixedly arranged on the inner periphery of the toothed ring, the top end of the sealing cylinder extends to the top of the toothed ring in the horizontal direction and then extends upwards to form a connecting cylinder close to the inner wall of the fixing cylinder, the sealing ring is coaxially sleeved on the outer wall of the connecting cylinder, and the sealing ring is in interference fit with the inner circumferential surface of the fixing cylinder.