CN212388087U - Electroslag furnace with introduced negative pressure air pipe - Google Patents

Abstract

The utility model provides an introduce electroslag furnace of negative-pressure blast pipe, including electroslag furnace body and flue gas filter equipment, flue gas filter equipment includes the organism and according to the collection petticoat pipe that flue gas direction of motion set gradually, flexible return bend, the dust removal tuber pipe, the filter screen, dust removal sack and suction fan, the organism is provided with support bearing with the link of dust removal tuber pipe, support bearing's outer end is provided with the connecting plate, the fixed column sliding connection of connecting plate and condenser tube's outer wall setting, the one end that lies in the organism on the dust removal tuber pipe is provided with the limiting plate, the filter screen includes a plurality of filter unit, the dust removal sack includes baffle and a plurality of sack unit, space and suction fan intercommunication between organism and the baffle top, the opposite side of suction fan. The utility model provides a flue gas filter equipment's practicality is strong and can reduce the installation requirement to this device, still has higher filter capacity and purifying effect simultaneously, reasonable in design, simple structure are fit for extensive the popularization.

Description

Electroslag furnace with introduced negative pressure air pipe

Technical Field

The utility model belongs to the technical field of electroslag remelting equipment, especially, relate to an electroslag furnace of introducing negative-pressure air pipe.

Background

The electroslag furnace is one of important smelting equipment for producing high-quality alloy steel, can improve the purity of metal and the comprehensive performance of the metal, but a large amount of fluorine-containing flue gas generated in the production process of the electroslag furnace also causes serious pollution to the atmospheric environment, dust removal is mainly carried out by a dust removal pipeline behind a crystallizer during electroslag steel smelting, and the dust removal mode is often ineffective for fluorine gas because the fluorine gas is finally dispersed into the air after being sucked into an ash bin, so that the workshop environment is polluted, and the health of staff is greatly influenced.

In the prior art, CN201420579905.4 discloses a flue gas filtering device for an electroslag furnace mouth, which is characterized in that: it includes the organism, the lateral wall trompil of organism is equipped with the dust removal tuber pipe, the part outside that the dust removal tuber pipe stretches out in the organism is covered with the collection petticoat pipe, the outside cover of dust removal tuber pipe has condenser tube, the organism is inside to be fixed with the suction fan for the one end of dust removal tuber pipe, be provided with filter screen support in the dust removal tuber pipe rear side in the organism, filter screen support's top is equipped with the filter screen opening, be provided with the dust removal sack between filter screen support and the suction fan, the bottom of dust removal sack is equipped with the sack opening. The flue gas filtering device at the electroslag furnace mouth can suck away dust, remove fluorine gas, ensure the health of staff and avoid environmental pollution. However, the device has the problems that the smoke collecting hood is directly connected with the dust removing air pipe, and the installation requirement on the dust removing air pipe is higher and the smoke collecting effect is difficult to be adjusted in time because the angle and the length of the smoke collecting hood cannot be adjusted once being fixed; moreover, the filter screen and the dust removal cloth bag in the device have poor interception capability to the fluorine-containing flue gas, and a certain amount of fluorine-containing flue gas escapes.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that the flue gas filter equipment of above-mentioned electroslag furnace mouth exists, provide a reasonable in design, simple structure, dust collection efficiency are higher and have a electroslag furnace of introducing negative-pressure air pipe of nimble regulating power.

In order to achieve the above object, the technical solution adopted by the present invention is that, the electroslag furnace with introduced negative pressure air duct comprises an electroslag furnace body and a flue gas filtering device, the flue gas filtering device comprises a machine body, a dust removing air duct, a smoke collecting hood, a cooling water pipe, a filter screen, a dust removing cloth bag and a suction fan, the cooling water pipe is arranged on the outer wall of the dust removing air duct, the smoke collecting hood is arranged at one end of the dust removing air duct, the other end of the dust removing air duct extends into the machine body, the filter screen, the dust removing cloth bag and the suction fan are arranged inside the machine body, the dust removing air duct passes through the machine body, the electroslag furnace is characterized in that a telescopic elbow is arranged between the smoke collecting hood and the dust removing air duct, a support bearing is arranged at the connecting end of the machine body and the dust removing air, the dust removal air pipe is characterized in that a fixing column matched with the adjusting hole is arranged on the outer wall of the cooling water pipe, a fastening screw is arranged on the fixing column, a limiting plate is arranged at one end, located in the machine body, of the dust removal air pipe, the filter screen comprises a plurality of filter units, the filter units are overlapped from front to back, the mesh number of the filter units is increased in an integral multiple mode, the dust removal cloth bag comprises a baffle and a plurality of cloth bag units, the cloth bag units are arranged at the bottom of the baffle and distributed in a staggered mode in two rows, through holes corresponding to the cloth bag units are formed in the baffle, a gap between the machine body and the top of the baffle is communicated with a suction fan, and a leading-.

Preferably, the part of the machine body between the filter screen and the support bearing is a frustum pyramid, the support bearing is positioned at the center of the small bottom surface of the frustum pyramid, and the inner wall of the frustum pyramid is provided with a plurality of drainage strips.

Preferably, the top of the machine body is provided with two mounting ports which are respectively used for mounting the filter screen and the dust removal cloth bag.

Compared with the prior art, the utility model discloses an advantage lies in with positive effect:

1. the electroslag furnace with the introduced negative pressure air pipe provided by the utility model has the advantages that the length of the dust removal air pipe and the angle of the smoke collecting hood can be flexibly adjusted, the practicability is strong, and the installation requirement on the device can be reduced; meanwhile, the filtering capacity of the filtering net and the dust removing cloth bag in the device is higher, the fluorine-containing smoke can be effectively intercepted, and the purifying effect is good. The device has reasonable design and simple structure, and is suitable for large-scale popularization.

Drawings

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

FIG. 1 is a schematic structural diagram of a flue gas filtering device provided by an embodiment;

FIG. 2 is a top view of a baffle and a cloth bag unit provided in the embodiment;

in the above figures, 1, body; 2. a dust removal air pipe; 21. a limiting plate; 3. a smoke collecting hood; 4. a cooling water pipe; 5. a filter screen; 51. a filtration unit; 6. a dust removal cloth bag; 61. a baffle plate; 62. a cloth bag unit; 7. a suction fan; 8. a telescopic bent pipe; 9. a support bearing; 10. a connecting plate; 11. fixing a column; 12. fastening the screw; 13. a lead-out port; 14. and (6) draining the strip.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

An embodiment, as shown in fig. 1 and 2, the utility model provides a pair of introduce electroslag furnace of negative-pressure air duct, including electroslag furnace body and flue gas filter equipment, flue gas filter equipment includes organism 1, dust removal tuber pipe 2, collection petticoat pipe 3, condenser tube 4, filter screen 5, dust removal sack 6 and suction fan 7, and condenser tube 4 sets up at the outer wall of dust removal tuber pipe 2, and collection petticoat pipe 3 sets up the one end at dust removal tuber pipe 2, and inside dust removal tuber pipe 2's the other end stretched into organism 1, and filter screen 5, dust removal sack 6 and suction fan 7 set up the inside at organism 1, and dust removal tuber pipe 2 passes the organism. The structures of the electroslag furnace body, the cooling water pipe 4 and the suction fan 7 are the prior art, and the description of this embodiment is omitted. The utility model discloses the structure of the connection structure at focus to dust removal tuber pipe both ends, filter screen and the structure of dust removal sack propose the improvement to improve the holistic practicality of this device.

Specifically, the utility model provides a be provided with flexible return bend 8 between collection petticoat pipe 3 and the dust removal tuber pipe 2, the link of organism 1 and dust removal tuber pipe 2 is provided with support bearing 9, support bearing 9's outer end is provided with connecting plate 10, be provided with the regulation hole on the connecting plate 10, the outer wall of condenser tube 4 is provided with fixed column 11 with regulation hole complex, be provided with fastening spiral 12 on the fixed column 11, the one end that lies in the organism on dust removal tuber pipe 2 is provided with limiting plate 21, filter screen 5 includes a plurality of filter unit 51, a plurality of filter unit 51 superpose from front to back and mesh number increases progressively by integral multiple, dust removal sack 6 includes baffle 61 and a plurality of sack unit 2, a plurality of sack unit 62 set up in the bottom of baffle and be two rows of scattered distribution, be provided with the through-hole that corresponds with sack unit 62 on baffle 61, the space between organism 1 and the baffle 61 top communicates with, the other side of the suction fan is provided with a leading-out opening 13. The telescopic elbow 8 is used for adjusting the angle of the smoke collecting cover at the end part of the dust removing air pipe so as to adjust the smoke collecting position to the optimal smoke collecting position in real time, and the requirement on the installation angle of the dust removing air pipe 2 is reduced. Dust removal tuber pipe 2 and organism 1 adopt sliding connection's form, if when through pull dust removal tuber pipe 2, linear motion is to fixed column 11 in the regulation hole, and it is fixed that tight fastening spiral 12 can be with the dust removal tuber pipe, and limiting plate 21 can reach limit effect, prevents to adjust excessively, like this alright reach the purpose of adjusting the actual distance of dust removal tuber pipe and electroslag furnace mouth, and the practicality is stronger.

Further, the utility model discloses an improve filter screen 5 and dust removal sack 6 and show the filtration purification ability that has improved this device to fluorine-containing flue gas. The filter screen 5 adopts a multi-stage filter unit to intercept fluorine-containing flue gas to the maximum extent, so that the fluorine-containing flue gas reacts with alkaline substances coated on the filter screen to obtain corresponding fluoride, the fluoride can be exactly intercepted by the cloth bag unit and falls into a space below the machine body and the baffle, and the purified flue gas leaves from a leading-out opening at the rear end of the suction fan from the upper part of the baffle.

In order to avoid that fluoride generated by reaction with fluorine-containing flue gas on the filter screen falls on the front side of the machine body to cause backflow of smoke dust, the part of the machine body 1, which is positioned between the filter screen and the supporting bearing, is a frustum pyramid, the supporting bearing is positioned in the center of the small bottom surface of the frustum pyramid, the inner wall of the frustum pyramid is provided with a plurality of drainage strips 14, the frustum pyramid-shaped machine body is utilized to guide the fluorine-containing flue gas, and the drainage strips can improve the directional stability of air flow movement, so that the air flow can bring the reacted fluoride to the spatial position of the dust removal cloth bag.

In order to facilitate the replacement of the filter screen 5 and the dust removal cloth bag 6, the utility model discloses be provided with two installing ports at the top of the machine body 1 and be used for installing the filter screen and the dust removal cloth bag respectively. It should be noted that the cloth bag units are connected to the through holes of the baffle 61 in a clamping manner, and the cloth bag units can be installed or replaced one by one.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (3)

1. An electroslag furnace introducing negative pressure air pipes comprises an electroslag furnace body and a flue gas filtering device, wherein the flue gas filtering device comprises a machine body, a dust removing air pipe, a smoke collecting hood, a cooling water pipe, a filter screen, a dust removing cloth bag and a suction fan, the cooling water pipe is arranged on the outer wall of the dust removing air pipe, the smoke collecting hood is arranged at one end of the dust removing air pipe, the other end of the dust removing air pipe extends into the machine body, the filter screen, the dust removing cloth bag and the suction fan are arranged inside the machine body, and the dust removing air pipe penetrates through the machine body, the electroslag furnace is characterized in that a telescopic bent pipe is arranged between the smoke collecting hood and the dust removing air pipe, a support bearing is arranged at the connecting end of the machine body and the dust removing air pipe, a connecting plate is arranged at the outer end of the support bearing, an adjusting, the dust removal air pipe is provided with a limiting plate at one end in the machine body, the filter screen comprises a plurality of filter units, the filter units are overlapped from front to back and are increased in an integral multiple mode, the dust removal cloth bag comprises a baffle and a plurality of cloth bag units, the cloth bag units are arranged at the bottom of the baffle and are distributed in a staggered mode, through holes corresponding to the cloth bag units are formed in the baffle, the gap between the machine body and the top of the baffle is communicated with the suction fan, and a leading-out opening is formed in the other side of the suction fan.

2. The electroslag furnace introduced into the negative pressure air pipe according to claim 1, wherein the portion of the machine body located between the filter screen and the supporting bearing is a frustum pyramid, the supporting bearing is located at the center of the small bottom surface of the frustum pyramid, and the inner wall of the frustum pyramid is provided with a plurality of drainage strips.

3. The electroslag furnace introduced into the negative pressure air pipe according to claim 2, wherein the top of the machine body is provided with two mounting openings for mounting a filter screen and a dust removal cloth bag respectively.

Images