CN218001556U

CN218001556U - Industrial furnace air-powder mixer

Info

Publication number: CN218001556U
Application number: CN202222278873.1U
Authority: CN
Inventors: 刘奔; 余鹏飞; 黎佳荣; 陈志诚
Original assignee: Hangzhou Zhongtai Hydrogen Energy Technology Co ltd
Current assignee: Hangzhou Zhongtai Hydrogen Energy Technology Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-12-09
Anticipated expiration: 2032-08-29

Abstract

The utility model provides an industrial furnace wind powder blender, including hybrid tube and unloading pipe, the hybrid tube lateral part is connected to the unloading pipe, be equipped with the delivery air passageway that communicates in proper order in the hybrid tube, throat passageway and wind powder hybrid channel, be equipped with powder unloading passageway in the unloading pipe, the lateral part intercommunication of powder unloading passageway and throat passageway, the delivery air passageway is equipped with the convergent section with the position of throat passageway intercommunication, wind powder hybrid channel is equipped with the gradual expansion section with the position of throat passageway intercommunication, the pipe wall of the hybrid tube portion that the convergent section is located is equipped with at least one passageway sectional area adjusting part, the pipe wall sliding connection of the hybrid tube portion that passageway sectional area adjusting part and convergent section are located, when passageway sectional area adjusting part slides for the pipe wall, at least some of passageway sectional area adjusting part is located the throat passageway. The utility model discloses improve powder unloading condition, reduce stifled powder and the anti emergence probability of scurrying to strengthen the disturbance collision of defeated air supply and powder and make both mix more evenly.

Description

Industrial furnace air-powder mixer

Technical Field

The utility model relates to a fuel mixing arrangement of industrial furnace, concretely relates to industrial furnace wind powder blender belongs to energy-concerving and environment-protective technical field.

Background

The air-powder mixer is an important part in an industrial furnace for smelting nonferrous metals, solid fuel powder in the powder bin falls into the air-powder mixer through the powder feeder, and the solid fuel powder is carried into the combustor by the conveying air externally connected with the air-powder mixer so as to be combusted in a hearth.

The existing solid fuel powder conveying mode is generally that a certain pressure is applied to a powder bin, for example, the solid fuel powder enters an air-powder mixer in a mode of extruding through a feeder, the air-powder mixer is generally in a straight cylinder shape, and the air-powder mixing effect is easily influenced by feeding pressure fluctuation. With the blanking of solid fuel powder in the storage bin, the material level of the storage bin is changed continuously, and the pressure in the storage bin is unstable; when the pressure of the powder bin is increased and the feeding amount is increased, powder is easy to gather in the feeding process to block a feeding pipe, so that combustion is cut off, and in addition, air and powder are not uniformly mixed, so that the combustion in the furnace is insufficient; when the powder bin pressure is reduced and the feed rate is reduced, the powder may flow back into the bin, deteriorating the combustion effect and even creating a backfire hazard.

Although the stable powder bin pressure can improve the blanking condition of the existing solid fuel powder conveying mode, the stable improvement of the powder bin pressure is difficult, so that a novel industrial furnace air-powder mixer is researched and developed, the blanking condition of the solid fuel powder is improved, the probability of powder blockage and channeling is reduced, the solid fuel powder and conveying air are uniformly mixed, the combustion condition of an industrial furnace is improved, and the method has important significance for the field.

SUMMERY OF THE UTILITY MODEL

Based on the background, the utility model aims to provide an industrial furnace air-powder mixer of solid fuel powder unloading condition in improvement industrial furnace.

In order to realize the purpose of the utility model, the utility model provides a following technical scheme:

the utility model provides an industrial furnace wind powder blender, includes mixing tube and unloading pipe, the unloading union coupling the mixing tube lateral part, be equipped with transport air passageway, throat passageway and the wind powder mixing passage who communicates in proper order in the mixing tube, be equipped with powder unloading passageway in the unloading pipe, powder unloading passageway and throat passageway's lateral part intercommunication, the position of transport air passageway and throat passageway intercommunication is equipped with the convergent section, the position of wind powder mixing passage and throat passageway intercommunication is equipped with the divergent section, the mixing tube partial pipe wall that the convergent section is located is equipped with at least one passageway sectional area adjustment member, the pipe wall sliding connection of mixing tube part that passageway sectional area adjustment member and convergent section are located, when passageway sectional area adjustment member for when the pipe wall slides, at least partly of passageway sectional area adjustment member is located in the throat passageway.

The venturi effect that makes the mixing tube internal formation through convergent section and divergent section, the cooperation passageway sectional area adjusting part is to the regulation of the sectional area at throat passageway and delivery air passageway intercommunication position, make the delivery air accelerate when getting into throat passageway, throat passageway is because static pressure reduces, the dynamic pressure increases, the wind speed improves and forms little negative pressure environment, improve powder unloading condition, reduce stifled powder and the emergence probability of anti-scurrying, and strengthen the disturbance collision of delivery air and powder and make both mix more evenly, in addition, passageway sectional area adjusting part bears most of delivery air and erodees, can protect the mixing tube and reduce the erosive wear, the life of extension mixing tube.

As preferred, passageway sectional area adjustment part includes slide, guide and retaining member, the slide is located in the convergent section and parallel with the pipe wall internal surface of the mixed tube portion that the convergent section is located, the pipe wall of the mixed tube portion that the convergent section is located is equipped with first slide, the guide is located the pipe wall outside of the mixed tube portion that the convergent section is located, the guide with the mixed tube portion's that the convergent section is located pipe wall external fixed surface is connected, and the guide is equipped with the second slide that runs through the guide along direction of height, the second slide match in first slide, first slide and second slide are worn to locate by the retaining member, the bottom and the slide fixed surface of retaining member are connected. The slide can adopt wear-resisting ceramic material, further improves the resistance to washing, the better pipe wall of protection hybrid tube.

Preferably, the cross section of the mixing pipe is square, the mixing pipe is provided with at least two first inclined pipe walls at the position where the conveying air channel is communicated with the throat channel, the at least two first inclined pipe walls are symmetrically arranged, and the conveying air channel part surrounded by the at least two first inclined pipe walls is configured to be the tapered section.

Preferably, the number of the passage sectional area adjusting parts is matched with the number of the first inclined tube walls, and each first inclined tube wall is provided with one passage sectional area adjusting part.

Preferably, the cross section of the mixing pipe is square, the mixing pipe is provided with at least two second inclined pipe walls at the position where the air-powder mixing passage is communicated with the throat passage, the at least two second inclined pipe walls are symmetrically arranged, and the air-powder mixing passage part surrounded by the at least two second inclined pipe walls is configured as the divergent section.

Preferably, the central axis of the discharging pipe is perpendicular to the central axis of the mixing pipe, and the inlet of the discharging pipe is located above the mixing pipe.

Preferably, the pipe wall of the feeding pipe is connected with the pipe wall of the mixing pipe in an inclined direction, and the sectional area of an upper passage of the powder feeding passage is larger than that of a lower passage.

Preferably, the pipe wall of one side of the blanking pipe adjacent to the air conveying channel and the pipe wall of the mixing pipe part in which the throat channel is located form a first included angle, and the pipe wall of one side of the blanking pipe adjacent to the air-powder mixing channel and the pipe wall of the mixing pipe part in which the throat channel is located form a second included angle.

Preferably, the angle of the second included angle is greater than the first included angle, and the angle of the first included angle is greater than 60 °.

Preferably, a filter plate is arranged in the blanking pipe and is positioned at a position far away from the mixing pipe in the blanking pipe.

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

the utility model discloses an industrial furnace wind powder blender makes the throat passageway form little negative pressure environment, improves powder unloading condition, reduces stifled powder and the emergence probability of scurrying to strengthen the disturbance collision of defeated air supply and powder and make both mix more evenly, in addition, the channel section area adjusting part bears most of defeated air supply and erodees, can protect the hybrid tube and reduce the life who erodees wearing and tearing, extension hybrid tube.

Drawings

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

FIG. 1 is a schematic diagram of the internal structure of an industrial furnace air-powder mixer according to the present invention;

FIG. 2 is a schematic side view of the industrial furnace air-powder mixer of the present invention;

FIG. 3 is a schematic structural view of a channel sectional area adjusting member according to the present invention;

fig. 4 is a schematic top view of the structure using the novel middle passage sectional area adjusting member.

In the figure: 1. a mixing tube; 2. a discharging pipe; 3. a conveying air channel; 4. a throat passage; 5. a wind-powder mixing channel; 6. a powder blanking channel; 7. a tapered section; 8. a gradual expansion section; 9. a passage sectional area adjusting member; 101. a first sloped tube wall; 102. a second sloped tube wall; 201. a filter plate; 701. a first slideway; 901. a slide plate; 902. a guide member; 903. a locking member; 904. a second slideway; a. a first included angle; b. and a second included angle.

Detailed Description

The technical solution of the present invention is further specifically described below by way of specific embodiments and with reference to the accompanying drawings. It is to be understood that the practice of the present invention is not limited to the following examples, and that any modifications and/or changes in form made to the present invention are intended to fall within the scope of the present invention.

In the utility model, all parts and percentages are weight units, and the adopted equipment, raw materials and the like can be purchased from the market or commonly used in the field if not specified. The methods in the following examples are conventional in the art unless otherwise specified. Unless otherwise indicated, the components or devices in the following examples are all common standard components or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through routine experimentation.

In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the invention. However, one or more embodiments may be practiced without these specific details by one of ordinary skill in the art.

An industrial furnace air-powder mixer as shown in fig. 1 and 2 comprises a mixing tube 1 and a blanking tube 2, wherein the blanking tube 2 is connected with the side of the mixing tube 1.

The mixing tube is characterized in that a conveying air channel 3, a throat channel 4 and an air-powder mixing channel 5 which are communicated in sequence are arranged in the mixing tube 1, a powder blanking channel 6 is arranged in the blanking tube 2, the powder blanking channel 6 is communicated with the side part of the throat channel 4, a reducing section 7 is arranged at the position where the conveying air channel 3 is communicated with the throat channel 4, a gradually expanding section 8 is arranged at the position where the air-powder mixing channel 5 is communicated with the throat channel 4, two channel sectional area adjusting parts 9 are arranged on the tube wall of the mixing tube 1 where the reducing section 7 is located, the channel sectional area adjusting parts 9 are in sliding connection with the tube wall of the mixing tube 1 where the reducing section 7 is located, and when the channel sectional area adjusting parts 9 slide relative to the tube wall, at least one part of the channel sectional area adjusting parts 9 is located in the throat channel 4. Of course, the number of the channel cross-sectional area adjusting parts 9 can be one or other number, and can be increased or decreased according to the actual application requirement.

As shown in fig. 3 and 4, the channel cross-sectional area adjusting component 9 includes a sliding plate 901, a guide 902, and a locking member 903, where the sliding plate 901 is disposed in the tapered section 7 and is parallel to the inner surface of the pipe wall of the portion of the mixing pipe 1 where the tapered section 7 is located, specifically, the sliding plate 901 is attached to the inner surface of the pipe wall and can move smoothly relative to the pipe wall, a first slide 701 is disposed on the pipe wall of the portion of the mixing pipe 1 where the tapered section 7 is located, the guide 902 is disposed outside the pipe wall of the portion of the mixing pipe 1 where the tapered section 7 is located, the guide 902 is fixedly connected to the outer surface of the pipe wall of the portion of the mixing pipe 1 where the tapered section 7 is located, the guide 902 is disposed with a second slide 904 penetrating through the guide 902 in the height direction, the second slide 904 is matched with the first slide 701, and the locking member 903 is disposed through the first slide 701 and the second slide 904, and the bottom end of the locking member 903 is fixedly connected to the surface of the sliding plate 901. The sliding plate 901 is made of wear-resistant ceramic materials, so that the flushing resistance is further improved, and the pipe wall of the mixing pipe 1 is better protected.

In this embodiment, the cross section of the mixing tube 1 is square, the mixing tube 1 has two first inclined tube walls 101 at the position where the delivery air channel 3 communicates with the throat channel 4, the two first inclined tube walls 101 are symmetrically arranged, one is located at the upper part of the mixing tube 1, the other is symmetrically located at the lower part of the mixing tube 1, and the portion of the delivery air channel 3 surrounded by the two first inclined tube walls 101 is configured as a tapered section 7.

In this embodiment, the number of the passage cross-sectional area adjusting parts 9 is two and matches the number of the first inclined tube walls 101, and each first inclined tube wall 101 has one passage cross-sectional area adjusting part 9.

In this embodiment, the cross section of the mixing tube 1 is square, the mixing tube 1 has two second inclined tube walls 102 at the position where the air-powder mixing channel 5 communicates with the throat channel 4, the two second inclined tube walls 102 are symmetrically arranged, one is located at the upper part of the mixing tube 1, the other is symmetrically located at the lower part of the mixing tube 1, and the part of the air-powder mixing channel 5 surrounded by the two second inclined tube walls 102 is configured as a divergent section 8.

In this embodiment, the central axis of the feeding pipe 2 is perpendicular to the central axis of the mixing pipe 1, and the inlet of the feeding pipe 2 is located above the mixing pipe 1.

In this embodiment, the discharge pipe 2 is a pipe body having an equal wall thickness, the pipe wall of the discharge pipe 2 is connected to the pipe wall of the mixing pipe 1 in an oblique direction, and the upper passage sectional area of the powder discharge passage 6 is larger than the lower passage sectional area. The inner surface of the pipe wall of the blanking pipe 2 is smooth and has no burrs, so that the pipeline is prevented from being blocked due to powder aggregation.

In this embodiment, a first included angle a is formed between the tube wall of the side adjacent to the discharging tube 2 and the air conveying channel 3 and the tube wall of the mixing tube 1 part where the throat channel 4 is located, and a second included angle b is formed between the tube wall of the side adjacent to the discharging tube 2 and the air-powder mixing channel 5 and the tube wall of the mixing tube 1 part where the throat channel 4 is located.

In the present embodiment, the angle of the second included angle b is greater than the first included angle a, and the angle of the first included angle a is greater than 60 °. In this embodiment, the first included angle a is 65 °, the second included angle b is 70 °, and the angles of the first included angle a and the second included angle b can be adjusted according to application requirements.

In this embodiment, be equipped with filter 201 in the unloading pipe 2, filter 201 is located the position of keeping away from mixing tube 1 in unloading pipe 2, and filter 201 can prevent that inhomogeneous jumbo size solid fuel powder granule from falling into and stifled knot powder unloading passageway 6.

This industrial furnace wind powder blender makes the venturi effect that forms in the hybrid tube 1 through convergent section 7 and divergent section 8, the regulation of cooperation passageway sectional area adjusting part 9 to the sectional area of throat passageway 4 and delivery air passageway 3 intercommunication position, make the delivery air accelerate when getting into throat passageway 4, throat passageway 4 is because the static pressure reduces, the dynamic pressure increases, the little negative pressure environment is formed to the wind speed improvement, improve the powder unloading condition, reduce stifled powder and the emergence probability of anti-channeling, and strengthen the disturbance collision of delivery air and powder and make both mixes more evenly, in addition, passageway sectional area adjusting part 9 bears most of delivery air and erodees, can protect hybrid tube 1 and reduce the erosive wear, the life of extension hybrid tube 1.

The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.

Claims

1. An industrial furnace air-powder mixer is characterized in that: the industrial furnace air-powder mixer comprises a mixing pipe (1) and a blanking pipe (2), wherein the blanking pipe (2) is connected with the side part of the mixing pipe (1), a conveying air channel (3), a throat channel (4) and an air-powder mixing channel (5) which are sequentially communicated are arranged in the mixing pipe (1), a powder blanking channel (6) is arranged in the blanking pipe (2), the powder blanking channel (6) is communicated with the side part of the throat channel (4), a reducing section (7) is arranged at the position where the conveying air channel (3) is communicated with the throat channel (4), a gradually expanding section (8) is arranged at the position where the air-powder mixing channel (5) is communicated with the throat channel (4), at least one channel sectional area adjusting part (9) is arranged on the pipe wall of the mixing pipe (1) part where the reducing section (7) is located, the channel sectional area adjusting part (9) is in sliding connection with the pipe wall of the mixing pipe (1) part where the reducing section (7) is located, and when the channel sectional area adjusting part (9) slides relative to the pipe wall, at least one part of the channel sectional area adjusting part (9) is located in the throat channel (4).

2. The industrial furnace air-powder mixer as claimed in claim 1, wherein: passageway sectional area adjusting part (9) are including slide (901), guide (902) and retaining member (903), slide (901) are located tapered section (7) in and parallel with the pipe wall internal surface of mixing tube (1) part that tapered section (7) are located, the pipe wall of mixing tube (1) part that tapered section (7) are located is equipped with first slide (701), guide (902) are located the mixing tube (1) of portion outside of pipe wall that tapered section (7) are located, guide (902) with the mixing tube (1) of portion that tapered section (7) are located pipe wall external surface fixed connection, guide (902) are equipped with along direction of height through second slide (904) of guide (902), second slide (904) match in first slide (701), retaining member (903) are worn to locate first slide (701) and second slide (904), the bottom and the slide (901) surface fixed connection of retaining member (903).

3. The industrial furnace air-powder mixer as claimed in claim 1, wherein: the cross section of the mixing pipe (1) is square, the mixing pipe (1) is provided with at least two first inclined pipe walls (101) at the position where the conveying air channel (3) is communicated with the throat channel (4), the at least two first inclined pipe walls (101) are symmetrically arranged, and the part, surrounded by the at least two first inclined pipe walls (101), of the conveying air channel (3) is configured into the tapered section (7).

4. The industrial furnace air-powder mixer as claimed in claim 3, wherein: the number of the passage sectional area adjusting parts (9) is matched with the number of the first inclined pipe walls (101), and each first inclined pipe wall (101) is provided with one passage sectional area adjusting part (9).

5. The industrial furnace air-powder mixer as claimed in claim 1 or 3, wherein: the cross section of the mixing pipe (1) is square, the mixing pipe (1) is provided with at least two second inclined pipe walls (102) at the position where the air-powder mixing passage (5) is communicated with the throat passage (4), the at least two second inclined pipe walls (102) are symmetrically arranged, and the part of the air-powder mixing passage (5) surrounded by the at least two second inclined pipe walls (102) is configured into the divergent section (8).

6. The industrial furnace air-powder mixer as claimed in claim 1, wherein: the central axis of the blanking pipe (2) is vertical to the central axis of the mixing pipe (1), and the inlet of the blanking pipe (2) is positioned above the mixing pipe (1).

7. The industrial furnace air-powder mixer as claimed in claim 6, wherein: the pipe wall of the blanking pipe (2) is connected with the pipe wall of the mixing pipe (1) along the inclined direction, and the sectional area of an upper passage of the powder blanking passage (6) is larger than that of a lower passage.

8. The industrial furnace air-powder mixer as claimed in claim 7, wherein: the air powder mixing device is characterized in that a pipe wall of one side, adjacent to the discharging pipe (2) and the air conveying channel (3), and a pipe wall of a mixing pipe (1) part, located by the throat channel (4) form a first included angle (a), and a pipe wall of one side, adjacent to the discharging pipe (2) and the air powder mixing channel (5), and a pipe wall of the mixing pipe (1) part, located by the throat channel (4), form a second included angle (b).

9. The industrial furnace air-powder mixer as claimed in claim 8, wherein: the angle of the second included angle (b) is greater than the first included angle (a), and the angle of the first included angle (a) is greater than 60 degrees.

10. The industrial furnace air-powder mixer as claimed in claim 1, wherein: a filter plate (201) is arranged in the blanking pipe (2), and the filter plate (201) is located in the blanking pipe (2) and far away from the mixing pipe (1).