CN209849879U

CN209849879U - A multistation flue gas collection device for ferrosilicon pouring

Info

Publication number: CN209849879U
Application number: CN201920250468.4U
Authority: CN
Inventors: 黄军东
Original assignee: Zhongwei Maoye Metallurgical Co Ltd
Current assignee: Zhongwei Maoye Metallurgical Co Ltd
Priority date: 2019-02-28
Filing date: 2019-02-28
Publication date: 2019-12-27
Anticipated expiration: 2029-02-28

Abstract

A multistation flue gas collecting device for silicon iron casting comprises at least two flue gas collecting units, a flue gas collecting box, a bag-type dust remover and a microprocessor which are arranged side by side, wherein each flue gas collecting unit comprises a flue gas collecting cover, a casting fixed die assembly, a flue gas guide assembly, a flue gas cover assembly and a steel ladle reversing frame, the flue gas guide assembly comprises a plurality of compressed air injection nozzles arranged at two sides of a casting head, and an angle sensor is arranged on the steel ladle reversing frame. Can prevent the smoke dust in the smoke collecting cover from being discharged from two sides, and realizes zero discharge of the smoke.

Description

A multistation flue gas collection device for ferrosilicon pouring

Technical Field

The utility model relates to a ferrosilicon smelting flue gas collecting device technical field, in particular to a multistation flue gas collection device for ferrosilicon pouring.

Background

The ferrosilicon ore heating furnace has higher speed in recent development, the furnace type is more developed from 16500KVA to 25500KVA, the high-energy-consumption small furnace type gradually exits the market along with the further increase of the national environment-friendly and energy-saving form, and the large-scale furnace condition with high-efficiency, environment-friendly and energy-saving technical content is continuously brought forward. From 25500KVA and 33000KVA to the current 4500KVA ore furnace, 63000KVA ore furnace is built. The traditional ferrosilicon ore heating furnace generally adopts a traveling ladle to travel to a fixed casting mold cavity for casting when casting iron. Because the furnace type is big, output is high, and during the casting, the flue gas in the ferrosilicon liquid will not organize and discharge in the atmosphere, causes great pollution to the air, does not accord with national environmental protection policy.

Disclosure of Invention

In view of the above, it is necessary to provide a multi-station flue gas collecting device for ferrosilicon casting with low energy consumption.

A multistation flue gas collection device for ferrosilicon pouring comprises at least two flue gas collection units, flue gas collection boxes, bag-type dust collectors and a microprocessor, wherein the two flue gas collection units are arranged side by side, each flue gas collection unit comprises a flue gas collection cover, a pouring fixed mold component, a flue gas guide component, a flue gas cover component and a steel ladle reversing frame, the pouring fixed mold component comprises a pouring head and a pouring fixed mold body, the flue gas collection cover is buckled right above the pouring head, the front and back directions of the flue gas collection cover are both open, the flue gas collection boxes are arranged at the top of the flue gas collection cover, a first flue gas collection hole is formed in the top wall of the flue gas collection cover, a second flue gas collection hole and a third flue gas collection hole are sequentially formed in the bottom wall of the flue gas collection boxes from left to right, the second flue gas collection hole and the third flue gas collection hole are coaxially arranged corresponding to the first flue gas, the inner cavity of each smoke collecting cover is communicated with the inner cavity of the smoke collecting box, one side of the smoke collecting box is provided with a smoke discharge port, the smoke discharge port of the smoke collecting box is connected with the inlet of a bag-type dust collector through a pipeline, the smoke guide assembly comprises a plurality of compressed air injection nozzles arranged at two sides of the casting head, compressed gas outlets of the compressed air injection nozzles all point to a first smoke collecting hole of the smoke collecting cover, so that high-pressure air injected by the compressed air injection nozzles enters the smoke collecting box and forms negative pressure below the first smoke collecting hole to guide smoke generated at the casting head below the first smoke collecting hole to enter the smoke collecting box, the smoke cover assembly comprises a smoke collecting cover and a first air cylinder, the smoke collecting cover is arranged at the smoke collecting hole, the first air cylinder is fixed at the top of the smoke collecting box, and the fixed end of the first air cylinder is fixedly connected with the smoke collecting box, the telescopic end of the first cylinder is fixedly connected with the smoke collecting cover to drive the smoke collecting cover to move up and down through the telescopic action of the first cylinder, the smoke collecting cover is covered or opened with the first smoke collecting hole, the compressed air injection nozzle and the first cylinder are connected with the air compressor, a ladle reversing frame is arranged on the left side of the pouring head of the pouring fixed die assembly, an angle sensor is arranged on the ladle reversing frame to detect the reversing angle of a ladle on the ladle reversing frame and send the reversing angle detection value to the microprocessor, an angle threshold value is prestored in the microprocessor, and if the reversing angle is larger than or equal to the angle threshold value, the microprocessor controls the air compressor to work and controls the corresponding first cylinder of the ladle reversing frame to extend so as to open the corresponding first smoke collecting hole.

Preferably, the compressed air injection nozzles are uniformly distributed along the periphery of the pouring head, so that high-pressure air injected by the compressed air injection nozzles forms a compressed air wall which gradually reduces from bottom to top between the bottom wall of the flue gas collecting cover and the top wall of the flue gas collecting cover, and further, flue gas generated at the pouring head is prevented from flowing out from the open ends at the two sides of the flue gas collecting cover.

Preferably, the side wall and the top wall of the flue gas collecting cover are both composed of an inner wall and an outer wall, rake tooth-shaped columns are densely distributed on the inner side surface of the outer wall, one ends of the columns are fixedly connected with the outer wall, the other ends of the columns freely extend at a certain angle with the inner side surface of the outer wall, and the inner wall is made of refractory materials poured between the rake tooth-shaped columns on the inner side surface of the outer wall.

Preferably, the side wall, the top wall and the bottom wall of the smoke collection box are of sandwich structures, the sandwich layers of the side wall, the top wall and the bottom wall of the smoke collection box are communicated with each other, the bottom of the side wall of the smoke collection box is provided with a cold water inlet communicated with the sandwich layer, the top wall of the smoke collection box is provided with a hot water outlet communicated with the sandwich layer, the hot water outlet is connected with an inlet of a temporary storage water tank of the bath pool, and the cold water inlet is connected with an outlet of a low-temperature water supply source.

The utility model has the advantages that whether the pouring head generates smoke is indirectly detected by installing the angle sensor on the steel ladle reverse rotating frame, then the working state of the compressed air injection nozzle of the corresponding station is controlled by the microprocessor, and the working state of the smoke collecting cover of the corresponding position is controlled, energy waste is avoided, after the high-pressure air injected by the compressed air injection nozzle enters the smoke collecting box, the smoke in the smoke collecting cover can be prevented from being discharged from two sides, the jet action of the high-pressure air can lead the smoke around the high-pressure air boundary wrapping to flow to the smoke collecting cover, and the flow guiding function is provided, furthermore, the jet action of the high-pressure air can lead the high-pressure air to form negative pressure below the smoke collecting box after entering the smoke collecting box, and can also provide certain power for the smoke entering the smoke collecting box, thereby realizing zero discharge of the smoke, in, the bag-type dust collector is started during iron pouring, smoke generated during iron pouring is collected into the smoke collecting box, and the micro silicon powder is recovered through the bag-type dust collector and used as a batching material in the cement industry, so that the full utilization of resources is realized, and the atmospheric environment is protected.

Drawings

FIG. 1 is a front view of the multi-station flue gas collecting device for ferrosilicon pouring.

FIG. 2 is a sectional view of the multi-station flue gas collecting device for ferrosilicon casting in FIG. 1, taken along the A-A direction.

FIG. 3 is a sectional view of the multi-station flue gas collecting device for ferrosilicon casting in FIG. 2, taken along the direction B-B.

In the figure: the device comprises a flue gas collecting unit 10, a flue gas collecting cover 11, an inner wall 111, an outer wall 112, a column 113, a first flue gas collecting hole 114, a flue gas guide assembly 12, a compressed air injection nozzle 121, a flue gas cover assembly 13, a flue gas collecting cover 131, a first air cylinder 132, a casting fixed mold assembly 14, a casting head 141, a casting fixed mold body 142, a ladle reversing frame 15, a flue gas collecting box 20, a second flue gas collecting hole 21 and a third flue gas collecting hole 22.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1 to 3, the embodiment of the present invention provides a multistation flue gas collection device for silicon iron casting, including at least two flue gas collection units 10 arranged side by side, a flue gas collection box 20, a bag-type dust collector, and a microprocessor, each flue gas collection unit 10 includes a flue gas collection cover 11, a casting cover module 14, a flue gas diversion module 12, a flue gas cover module 13, and a ladle reversing frame 15, the casting cover module 14 includes a casting head 141 and a casting cover module body 142, the flue gas collection cover 11 covers and buckles the casting head 141, the flue gas collection cover 11 is opened in the front and back directions, the front and back directions referred to herein are inside and outside the paper in fig. 1, the flue gas collection box 20 is arranged on the top of the flue gas collection cover 11, a first flue gas collection hole 114 is opened on the top wall of the flue gas collection cover 11, a second flue gas collection hole 21 is opened from left to right in sequence on the bottom wall of the flue gas, The third flue gas collecting holes 22, the second flue gas collecting holes 21 and the third flue gas collecting holes 22 are coaxially arranged corresponding to the first flue gas collecting holes 114 of one flue gas collecting cover 11, so as to communicate the inner cavity of each flue gas collecting cover 11 with the inner cavity of the flue gas collecting box 20, one side of the flue gas collecting box 20 is provided with a flue gas discharge port, the flue gas discharge port of the flue gas collecting box 20 is connected with the inlet of a bag-type dust collector through a pipeline, the flue gas guiding assembly 12 comprises a plurality of compressed air injection nozzles 121 arranged at the two sides of the pouring head 141, the compressed gas outlets of the compressed air injection nozzles 121 are all directed to the first flue gas collecting holes 114 of the flue gas collecting cover 11, so that after high-pressure air injected by the compressed air injection nozzles 121 enters the flue gas collecting box 20, negative pressure is formed below the first flue gas collecting holes 114, so as to guide the flue gas generated at the pouring head 141 below the first flue, the smoke cover assembly 13 comprises a smoke collecting cover 131 and a first cylinder 132, the smoke collecting cover 131 is arranged at a smoke collecting hole, the first cylinder 132 is fixed at the top of the smoke collecting box 20, the fixed end of the first cylinder 132 is fixedly connected with the smoke collecting box 20, the telescopic end of the first cylinder 132 is fixedly connected with the smoke collecting cover 131 so as to drive the smoke collecting cover 131 to move up and down through the telescopic of the first cylinder 132, and further cover or open the first smoke collecting hole 114, the compressed air injection nozzle 121 and the first cylinder 132 are both connected with an air compressor, a ladle reversing frame 15 is arranged at the left side of a pouring head 141 of the pouring fixed die assembly 14, an angle sensor is arranged on the ladle reversing frame 15 so as to detect the reversing angle of the ladle on the ladle reversing frame 15 and send the reversing angle detection value to the microprocessor, an angle threshold value is prestored in the microprocessor, and if the reversing angle is greater than or equal to the angle threshold value, the microprocessor controls the operation of the air compressor and controls the extension of the corresponding first air cylinder 132 of the ladle turret 15 so as to open the corresponding first fume collecting hole 114.

In the embodiment, the melt flows out from one side of the flue gas collecting cover 11, so that the problem of flue gas emission is difficult to solve by adopting a conventional closed structure.

In this embodiment, the multistation that indicates is that a plurality of flue gas are collected the cover 11 and are collected the flue gas that is used for corresponding quantity's pouring cover half subassembly 14, and most of the time part flue gas is collected the cover 11 and is in the inoperative state, and at this moment, sack cleaner, compressed air injection nozzle 121 still provide flue gas suction, high-pressure air power for corresponding station, cause the energy waste.

In the technical scheme, after the ladle reversing frame 15 reverses a certain angle, for example, 45 degrees, it indicates that the casting of the silicon iron molten slurry is started, the microprocessor controls the air compressor to start, the compressed air injection nozzle 121 injects high-pressure air, the first air cylinder 132 obtains power, the microprocessor controls the flue gas collection cover 131 to open, when the flue gas collection cover 131 is closed, the compressed air injection nozzle 121 stops running, manual control by a worker is available, or after a timer reaches a set time, the microprocessor controls according to a signal which is sent by the timer and reaches a preset time, of course, the closing of the flue gas collection cover 131 and the stop running of the compressed air injection nozzle 121 can be interlocked as required, the action of the flue gas collection cover 131 is completed, and then the action of the compressed air injection nozzle 121 is executed.

The utility model has the advantages that the angle sensor is arranged on the steel ladle reverse frame 15 to indirectly detect whether the pouring head 141 generates smoke, then the working state of the compressed air injection nozzle 121 of the corresponding station is controlled by the microprocessor, and the working state of the smoke collecting cover 131 of the smoke collecting cover 11 of the corresponding position is controlled, thereby avoiding energy waste, after the high-pressure air injected by the compressed air injection nozzle 121 enters the smoke collecting box 20, the smoke in the smoke collecting cover 11 can be prevented from being discharged from two sides, the high-pressure air has the jet effect, so that the smoke around the high-pressure air boundary flows to the smoke collecting cover 11 together, thereby having the flow guiding effect, and furthermore, the high-pressure air has the jet effect, after the high-pressure air enters the smoke collecting box 20, the negative pressure is formed below the smoke collecting box 20, and certain power can be provided for the smoke entering the smoke collecting box 20, zero discharge of smoke is realized, in addition, the bag-type dust collector is started during iron pouring, smoke generated during iron pouring is collected into the smoke collecting box 20, and silica fume is recovered through the bag-type dust collector and used as a material for cement industry, so that the full utilization of resources is realized, and the atmospheric environment is protected.

Referring to fig. 1 to 3, further, the compressed air injection nozzles 121 are uniformly distributed along the periphery of the pouring head 141, so that the high-pressure air injected by the compressed air injection nozzles 121 forms a compressed air wall which gradually reduces from bottom to top between the bottom wall of the flue gas collecting hood 11 and the top wall of the flue gas collecting hood 11, and further, the flue gas generated at the pouring head 141 is prevented from flowing out from the open ends at both sides of the flue gas collecting hood 11.

Referring to fig. 1 and 2, the side wall and the top wall of the flue gas collecting hood 11 are both composed of an inner wall 111 and an outer wall 112, rake teeth-shaped columns 113 are densely distributed on the inner side surface of the outer wall 112, one end of each column 113 is fixedly connected with the outer wall 112, the other end of each column 113 freely extends at a certain angle with the inner side surface of the outer wall 112, and the inner wall 111 is made of a refractory material poured between the rake teeth-shaped columns 113 on the inner side surface of the outer wall 112.

In this embodiment, the columns 113 are welded to the inner side of the outer wall 112 of the flue gas collecting hood 11, and then the refractory material is filled between the columns 113 to form the inner wall 111, so that the bonding strength between the inner wall 111 and the outer wall 112 is ensured, and a composite body formed by the columns 113 and the inner wall 111 can resist the scouring of high-temperature flue gas.

Referring to fig. 2, further, the side wall, the top wall and the bottom wall of the flue gas collection box 20 are all of a sandwich structure, the sandwich layers of the side wall, the top wall and the bottom wall of the flue gas collection box 20 are communicated with each other, the bottom of the side wall of the flue gas collection box 20 is provided with a cold water inlet communicated with the sandwich layer, the top wall of the flue gas collection box 20 is provided with a hot water outlet communicated with the sandwich layer, the hot water outlet is connected with an inlet of a temporary storage water tank of the bath pool, and the cold water inlet is connected with an.

The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a multistation flue gas collection device for ferrosilicon pouring which characterized in that: the casting cover die comprises a casting head and a casting cover die body, the smoke collecting cover die is buckled right above the casting head, the front and back directions of the smoke collecting cover die are both open, the smoke collecting box is arranged at the top of the smoke collecting cover, a first smoke collecting hole is formed in the top wall of the smoke collecting cover, a second smoke collecting hole and a third smoke collecting hole are sequentially formed in the bottom wall of the smoke collecting box from left to right and are coaxially arranged with the first smoke collecting hole of one smoke collecting cover, so that the inner cavity of each smoke collecting cover is communicated with the inner cavity of the smoke collecting box, a smoke discharge port is formed in one side of the smoke collection box, the smoke discharge port of the smoke collection box is connected with an inlet of the bag-type dust collector through a pipeline, the smoke guide assembly comprises a plurality of compressed air injection nozzles arranged on two sides of the pouring head, compressed gas outlets of the compressed air injection nozzles all point to a first smoke collection hole of the smoke collection cover, so that after high-pressure air injected by the compressed air injection nozzles enters the smoke collection box, negative pressure is formed below the first smoke collection hole to guide smoke generated at the pouring head below the first smoke collection hole to enter the smoke collection box, the smoke cover assembly comprises a smoke collection cover and a first air cylinder, the smoke collection cover is arranged at the smoke collection hole, the first air cylinder is fixed at the top of the smoke collection box, the fixed end of the first air cylinder is fixedly connected with the smoke collection box, and the telescopic end of the first air cylinder is fixedly connected with the smoke collection cover, the device comprises a first cylinder, a compressed air injection nozzle, a first cylinder, a ladle reversing frame, an angle sensor, a microprocessor and an air compressor, wherein the first cylinder drives the flue gas collection cover to move up and down in a telescopic mode, the first flue gas collection hole is covered or opened, the compressed air injection nozzle and the first cylinder are connected with the air compressor, the left side of a pouring head of a pouring fixed die assembly is provided with the ladle reversing frame, the ladle reversing frame is provided with the angle sensor, the angle sensor is used for detecting the reversing angle of a ladle on the ladle reversing frame and sending the reversing angle detection value to the microprocessor, an angle threshold value is prestored in the microprocessor, if the reversing angle is larger than or equal to the angle threshold value, the microprocessor controls the air compressor to work and controls the corresponding first cylinder of the ladle reversing frame.

2. A multistation flue gas collection device for ferrosilicon pouring according to claim 1, characterized in that: the compressed air injection nozzles are uniformly distributed along the periphery of the pouring head, so that high-pressure air injected by the compressed air injection nozzles forms a compressed air wall which gradually reduces from bottom to top between the bottom wall of the flue gas collecting cover and the top wall of the flue gas collecting cover, and further flue gas generated at the pouring head is prevented from flowing out from the open ends of the two sides of the flue gas collecting cover.

3. A multistation flue gas collection device for ferrosilicon pouring according to claim 1, characterized in that: the side wall and the top wall of the flue gas collecting cover are both composed of an inner wall and an outer wall, rake teeth-shaped columns are densely distributed on the inner side surface of the outer wall, one ends of the columns are fixedly connected with the outer wall, the other ends of the columns freely extend at a certain angle with the inner side surface of the outer wall, and the inner wall is made of refractory materials poured between the rake teeth-shaped columns on the inner side surface of the outer wall.

4. A multistation flue gas collection device for ferrosilicon pouring according to claim 3, characterized in that: the side wall, the top wall and the bottom wall of the smoke collecting box are of sandwich structures, the interlayers of the side wall, the top wall and the bottom wall of the smoke collecting box are mutually communicated, the bottom of the side wall of the smoke collecting box is provided with a cold water inlet communicated with the interlayer of the smoke collecting box, the top wall of the smoke collecting box is provided with a hot water outlet communicated with the interlayer of the smoke collecting box, the hot water outlet is connected with an inlet of a temporary storage water tank of the bath pool, and the cold water inlet is connected with an outlet of a low-.