CN210620730U - Fluidizing nozzle and fluidizing chamber - Google Patents

Abstract

The utility model relates to a fluidization nozzle and a fluidization chamber with the fluidization nozzle, wherein the fluidization nozzle comprises a first annular part and a second annular part which are integrally formed; the first annular part is a vertical pipe for conveying gas; the second annular portion is a vertical tube for exhaust gases; a plurality of discharge holes connected with the inclined insertion pipes are arranged at equal angles and equal intervals along the circumferential direction of the second annular part; an included angle is formed between the discharge hole and the second annular part; one end opening of the second annular part is expanded towards the first annular part; the other end of the second annular part is expanded towards the outlet at the opening part; the bore diameter of the inner bore of the first annular portion is greater than the bore diameter of the inner bore of the second annular portion. The utility model discloses can fully fluidize, be favorable to full operating mode to carry.

Description

Fluidizing nozzle and fluidizing chamber

Technical Field

The utility model relates to a gasification fluidized bed process field, in particular to fluidization nozzle and fluidization chamber.

Background

Most of the existing pneumatic conveying lower parts adopt gasification plates of a fluidized bed principle (the fluidized bed means that a large amount of solid particles are suspended in moving fluid so that the particles have certain apparent characteristics of the fluid), the gasification plates are formed by combining a steel wire mesh and canvas through a metal pore plate, the fluidization effect is obvious, but the gasification plates are not impact-resistant and wear-resistant, and the fluidization plates are failed and scrapped when condensed water appears in rainy weather or high-temperature easy-to-condense working conditions.

Meanwhile, the existing nozzle for pneumatic conveying of the gasification chamber has a plurality of defects, for example, the application number is 201310185627.4, and the document named as 'a novel gasification nozzle' discloses a novel gasification nozzle, which comprises an outer ring body, a middle ring body, an inner ring body, a cooling chamber and a spray head, wherein the outer ring body, the middle ring body and the inner ring body form a circular tube-shaped structure with a section being a concentric circle, only single-direction spraying can be carried out, accumulated materials are easily formed below the nozzle, the conveying efficiency of a conveying pump is influenced after long-term use, and the fluidization effect is poor.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art, the utility model discloses a fluidization nozzle and fluidization chamber.

The utility model discloses the technical scheme who adopts as follows:

a fluidization nozzle includes integrally formed first and second annular portions; the first annular part is a vertical pipe for conveying gas; the second annular portion is a vertical tube for exhaust gases; a plurality of discharge holes connected with the inclined insertion pipes are arranged at equal angles and equal intervals along the circumferential direction of the second annular part; an included angle is formed between the discharge hole and the second annular part; one end opening of the second annular part is expanded towards the first annular part; the other end of the second annular part is expanded towards the outlet at the opening part; the inner bore diameter of the first annular portion is greater than the inner bore diameter of the second annular portion.

The method is further characterized in that: the outer wall of the first annular portion is provided with a plurality of turns of threads.

The method is further characterized in that: the second annular portion includes two opposing flat surfaces and two opposing convex surfaces that enclose a tubular shape.

The method is further characterized in that: the number of the discharge holes is four; the included angle formed between two adjacent discharge holes is 90 degrees.

The method is further characterized in that: the included angle formed by the central axis of the discharge hole and the outer wall of the second annular part is 60 degrees.

The method is further characterized in that: the fluidizing nozzle is made of silicon nitride ceramic or silicon carbide ceramic.

A fluidising chamber comprising a fluidising nozzle as claimed in any preceding claim.

The method is further characterized in that: the fluidization chamber further comprises a cylinder; one end of the cylinder body is provided with a first flange, and the other end of the cylinder body is provided with a head sealing plate; the outer wall of the cylinder body is radially provided with a plurality of air source inlets, an ash-gas mixture outlet and a sewage outlet; the plurality of fluidizing nozzles are correspondingly connected with the plurality of gas source inlets; and the ash-gas mixture outlet is connected to a gas pipe.

The utility model has the advantages as follows:

1. the utility model discloses a fluidization nozzle improves the fluidization effect of fluidization chamber, clears up the deposition around the nozzle automatically in the transportation. The fluidization nozzle conducts flow to inlet compressed air to form umbrella-shaped airflow, the main injection blowing opening ensures enough air source pressure to drive ash and air to be fully mixed, the auxiliary blowing opening forms spiral umbrella-shaped airflow to clean ash deposited below the nozzle, assist turbulence and accelerate fluidization and uniform mixing. Through the improvement of the material of the fluidizing nozzle, the service life of the fluidizing nozzle can reach more than thirty years by using silicon nitride ceramics or silicon carbide ceramics, and the maintenance and the replacement are basically avoided.

2. The utility model discloses a fluidization chamber can fully fluidize, is favorable to the operating mode to carry, has especially solved pneumatic conveyor equipment and has complicacy, the dust is various, the gourmet nature is strong, meet water then equipment condemned problem at operating modes such as iron and steel trade. Can replace the fluidized bed completely, and solved and met the comdenstion water and promptly equipment scrap need shut down and overhaul the problem of changing after the big or sintering of air conveying in the difference in temperature in the north, iron-making and so on high temperature flue gas dust condensation dewfall, the drain can be add in equipment structure's change, can carry out the drainage blowdown under the condition of not dismantling, equipment passes through the mode that screw thread loose joint and high-pressure trachea are connected, simple easy equipment, the commonality is strong, reducible production time, improve work efficiency, the rotation of direction can arbitrary selection when assembling many ash buckets's series-parallel connection of air conveying, reduce the construction degree of difficulty, the efficiency of construction of project is improved.

Drawings

FIG. 1 is a cross-sectional view of a fluidizing nozzle.

Fig. 2 is a top view of a fluidizing nozzle.

Fig. 3 is a front view of the fluidizing chamber.

Fig. 4 is a cross-sectional view of a stiffener.

Fig. 5 is an enlarged schematic view of fig. 3 at B.

Fig. 6 is a cross-sectional view a-a of fig. 3.

Fig. 7 is an enlarged schematic view at C in fig. 6.

FIG. 8 is a top view of the fluidizing chamber.

In the figure: 1. a first annular portion; 2. a second annular portion; 21. a plane; 22. a convex surface; 3. a discharge hole; 4. a barrel; 5. a first flange; 6. a head sealing plate; 7. a gas source inlet; 8. an ash-gas mixture outlet; 9. a sewage draining outlet; 10. a second flange; 11. a reinforcing plate.

Detailed Description

The foregoing and other features, aspects and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Therefore, the directional terminology used is for the purpose of describing, but not limiting, the invention, and moreover, like reference numerals designate like elements throughout the embodiments.

The following describes a specific embodiment of the present embodiment with reference to the drawings.

Fig. 1 is a sectional view of a fluidizing nozzle, and fig. 2 is a plan view of the fluidizing nozzle. With reference to fig. 1 and 2, a fluidizing nozzle comprises a first annular portion 1 and a second annular portion 2 which are integrally formed. The fluidizing nozzle is made of silicon nitride ceramic or silicon carbide ceramic. The first annular portion 1 is in the form of a vertical tube for transporting gas. The outer wall of the first annular portion 1 is provided with a plurality of turns of threads. The second annular portion 2 is of a vertical tubular shape for the exhaust gases. The first and second annular portions 1 and 2 communicate, the channel being the main channel. The second annular portion 2 comprises two opposite flat surfaces 21 and two opposite convex surfaces 22 enclosing a tubular shape. A plurality of inclined cannula-connecting discharge holes 3 are arranged at equal angles and equal intervals along the circumferential direction of the second annular part 2. In the present embodiment, the number of the discharge holes 3 is four. The angle formed between two adjacent discharge holes 3 is 90 °. The discharge orifice 3 is angled with respect to the second annular portion 2. In this embodiment the angle formed by the central axis of the discharge aperture 3 and the outer wall of the second annular portion 2 is 60. One end opening of the second annular portion 2 is expanded toward the first annular portion 1. The other end of the second annular portion 2 is open expanding towards the outlet. The inner bore diameter of the first annular portion 1 > the inner bore diameter of the second annular portion 2.

Fig. 3 is a front view of the fluidizing chamber, fig. 4 is a sectional view of the reinforcing plate, and fig. 5 is an enlarged schematic view at B in fig. 3. With reference to fig. 3, 4 and 5, a fluidizing chamber comprises a cylinder 4 and the fluidizing nozzle described above. One end of the cylinder 4 is provided with a first flange 5, and the other end of the cylinder 4 is provided with a head sealing plate 6. Specifically, the end sealing plate 6 is welded with the bottom of the cylinder 4.

Fig. 6 is a cross-sectional view taken along line a-a in fig. 3, and fig. 7 is an enlarged view taken at line C in fig. 6. Referring to fig. 6 and 7, the outer wall of the cylinder 4 is radially provided with a plurality of air source inlets 7, an ash-air mixture outlet 8 and a sewage outlet 9. In this embodiment, the included angle between two adjacent air source inlets 7 is 30 °. The plurality of fluidizing nozzles are correspondingly connected with the plurality of gas source inlets 7. An ash-gas mixture outlet 8 is connected with the gas pipe. The gas pipe is preferably a seamless steel pipe. The end of the ash-gas mixture outlet 8 is provided with a second flange 10. A reinforcing plate 11 is arranged between the air pipe and the barrel 4. The cross section of the reinforcing plate 11 is a combination of an isosceles trapezoid and a right trapezoid. The bottom edge of the isosceles trapezoid is coincided with the right-angle edge of the right-angle trapezoid.

FIG. 8 is a top view of the fluidizing chamber. As shown in fig. 8, the fluidizing chamber is bolted to the sump pump via the first flange 5.

Through the fluidization chamber, the fluidized bed can be completely replaced, the problem that equipment is scrapped and needs to be shut down, overhauled and replaced when meeting the condensate water after the condensation of high-temperature flue gas dust such as large northern temperature difference or sintering, iron making and the like in pneumatic conveying is solved, a drain outlet can be additionally arranged in the change of the equipment structure, the drainage and pollution discharge can be carried out under the condition of non-disassembly, the fluidization chamber is connected with a high-pressure air pipe through a screw thread loose joint, the assembly is simple and easy, the universality is strong, the production time can be reduced, and the working efficiency is.

The rotation of the direction during the series-parallel connection assembly of the multi-ash bucket pneumatic conveying can be randomly selected, the construction difficulty is reduced, and the project construction efficiency is improved. The second annular part 2 of the fluidization nozzle guides the compressed air at the inlet to form umbrella-shaped airflow (the arrow direction in fig. 4 is the gas flowing direction), the main blowing nozzle of the second annular part 2 ensures enough air source pressure to drive ash and gas to be fully mixed, the auxiliary blowing nozzle of the second annular part 2 forms spiral umbrella-shaped airflow to clean ash deposited below the nozzle, assist turbulence and accelerate fluidization and uniform mixing. Through the improvement of the nozzle material, the fluidizing nozzle is made of silicon nitride ceramic or silicon carbide ceramic, the service life can reach more than thirty years, and the later maintenance and replacement are basically avoided.

The structure and operation of the bin pump are prior art, the selection of the type of the bin pump is common knowledge in the art, and can be selected by a person skilled in the art as required.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.

Claims (8)

1. A fluidizing nozzle characterized by: comprises a first annular part (1) and a second annular part (2) which are integrally formed; the first annular portion (1) is of a vertical tubular shape for conveying a gas; the second annular portion (2) is of vertical tubular shape for the discharge of gases; a plurality of discharge holes (3) connected with inclined insertion pipes are arranged at equal angles and equal intervals along the circumferential direction of the second annular part (2); an included angle is formed between the discharge hole (3) and the second annular part (2); one end of the second annular part (2) is opened and is expanded towards the first annular part (1); the other end of the second annular part (2) is expanded towards the outlet at the opening position; the inner hole aperture of the first annular part (1) is larger than the inner hole aperture of the second annular part (2).

2. The fluidizing nozzle according to claim 1, wherein: the outer wall of the first annular part (1) is provided with a plurality of circles of threads.

3. The fluidizing nozzle according to claim 1, wherein: the second annular portion (2) comprises two opposite flat faces (21) and two opposite convex faces (22) enclosing a tubular shape.

4. The fluidizing nozzle according to claim 1, wherein: the number of the discharge holes (3) is four; the included angle formed between two adjacent discharge holes (3) is 90 degrees.

5. The fluidizing nozzle according to claim 1, wherein: the included angle formed by the central axis of the discharge hole (3) and the outer wall of the second annular part (2) is 60 degrees.

6. The fluidizing nozzle according to claim 1, wherein: the fluidizing nozzle is made of silicon nitride ceramic or silicon carbide ceramic.

7. A fluidizing chamber characterized by: a fluidizing nozzle according to any one of claims 1 to 6.

8. The fluidization chamber of claim 7, wherein: the fluidization chamber further comprises a cylinder (4); a first flange (5) is arranged at one end of the cylinder body (4), and a head sealing plate (6) is arranged at the other end of the cylinder body (4); the outer wall of the cylinder body (4) is radially provided with a plurality of air source inlets (7), an ash-gas mixture outlet (8) and a sewage outlet (9); the plurality of fluidizing nozzles are correspondingly connected into the plurality of gas source inlets (7); the ash-gas mixture outlet (8) is connected to a gas pipe.

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