CN219730970U - Air inlet structure of converter primary dust removal fan convenient to disassemble and assemble - Google Patents

Abstract

The utility model discloses an air inlet structure of a primary dust removing fan of a converter, which is convenient to disassemble and assemble, and comprises a mounting block, wherein the upper end of the mounting block is connected with a rotating rod, one side, close to the rotating rod, of the mounting block is connected with an air inlet pipe, two net plates are symmetrically arranged on the inner wall of one side, close to the mounting block, of the air inlet pipe in an up-down mode, one side, far from the mounting block, of each net plate is provided with a threaded hole, one side, far from the mounting block, of each threaded hole is movably provided with a movable soft metal sealing ring, one side, far from the net plate, of each movable soft metal sealing ring is provided with a pressing plate, each pressing plate is connected with a corresponding threaded hole and a movable soft metal sealing ring through a first bolt, and one end, far from the mounting block, of each pressing plate is connected with an impeller. The utility model has the advantages that: the disassembly and assembly are convenient and quick, the internal leakage loss can be greatly reduced, and the potential safety hazard of gas poisoning of workers can be avoided.

Description

Air inlet structure of converter primary dust removal fan convenient to disassemble and assemble

Technical Field

The utility model relates to the technical field of fans in steel mills, in particular to an air inlet structure of a primary dust removal fan of a converter, which is convenient to assemble and disassemble.

Background

The primary dust removing fan of the converter in the steel mill is the only power source in the steel-making dust removing system, and because the raw gas after steel making contains moisture, dust and has heavier cohesiveness, a plurality of fans are required to be frequently shut down and removed to clean accumulated dust, even the dynamic balance is carried out, and the fans are required to be removed once a week. The original fan air inlet structure is simple, but inconvenient to detach, when the rotor is detached, workers are usually required to drill into the inlet shell firstly to detach the air inlet, then detach the impeller, finally detach the rotor again, and each time the rotor is detached, usually a few days are required, in addition, the rotor is detached very unsafe in a converter gas environment, the production process flow is influenced, and the gas poisoning of workers is possibly caused.

Disclosure of Invention

The utility model aims to provide an air inlet structure of a primary dust removal fan of a converter, which is convenient to disassemble and assemble, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a convenient dismouting's of dust removal fan of converter inlet structure, includes an installation piece upper end is connected with a bull stick through the bearing rotation one side fixedly connected with intake pipe that the installation piece is close to the bull stick be provided with two otter boards on intake pipe is close to installation piece one side inner wall upper and lower symmetry, every the otter board is kept away from one side of installation piece and is all offered a screw hole, every one side of screw hole all activity is provided with a movable soft metal seal circle, every movable soft metal seal circle is kept away from one side of otter board all is provided with a clamp plate, every the clamp plate all is in the same place with a corresponding screw hole and a movable soft metal seal circle through a first bolt the one end that the installation piece was kept away from to the bull stick is connected with an impeller.

Preferably, the upper end of the air inlet pipe is movably sleeved with an upper casing, and the upper end of the upper casing is fixedly connected with a pull handle.

Preferably, a bottom plate is arranged at the lower end of the mounting block, and the bottom plate is connected with the mounting block through a plurality of second bolts.

Preferably, a strip hole is formed on each movable soft metal sealing ring.

Compared with the prior art, the utility model has the beneficial effects that:

(1) The original sealing sleeve with a gap extending into the impeller is changed into a butt joint mode from a sleeve joint mode, and the gap between the air inlet of the fan and the impeller can be minimized by adjusting the position of the movable soft metal sealing ring, so that the internal leakage loss is greatly reduced, and the smaller the gap between the air inlet of the fan and the impeller is, the smaller the internal leakage risk is;

(2) Because fan air intake impeller changes from the sleeve opening relation into the opposite opening relation, can be very convenient and fast carry out the split of impeller and rotor, need not the workman to bore in the import casing before tearing open the air intake in, tear open the impeller again, but can be after the casing is hung through the loop wheel machine, directly hang the rotor, can effectively avoid the workman to advance and lead to the gas poisoning's potential safety hazard in the casing.

Drawings

FIG. 1 is a schematic overall sectional view of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A;

FIG. 3 is a partial schematic view of FIG. 2;

in the figure: 1. a mounting block; 2. a rotating rod; 3. an air inlet pipe; 4. a screen plate; 5. a threaded hole; 6. a movable soft metal seal ring; 7. a pressing plate; 8. a first bolt; 9. an impeller; 10. an upper housing; 11. a pull handle; 12. a bottom plate; 13. a second bolt; 14. and (5) a strip hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 3, the air inlet structure of a converter primary dust removal fan provided by the utility model comprises a mounting block 1, wherein a rotating rod 2 is rotatably connected to the upper end of the mounting block 1 through a bearing, an air inlet pipe 3 is fixedly connected to one side of the mounting block 1 close to the rotating rod 2, two net plates 4 are symmetrically arranged on the inner wall of one side of the air inlet pipe 3 close to the mounting block 1 up and down, a threaded hole 5 is formed in one side of each net plate 4 far away from the mounting block 1, a movable soft metal sealing ring 6 is movably arranged on one side of each threaded hole 5, a pressing plate 7 is fixedly arranged on one side of each movable soft metal sealing ring 6 far away from the net plate 4, each pressing plate 7 is fixedly connected with a corresponding threaded hole 5 and one movable soft metal sealing ring 6 through a first bolt 8, and one end of the rotating rod 2 far away from the mounting block 1 is connected with an impeller 9.

Specifically, the upper end of the air inlet pipe 3 is movably sleeved with one

The upper casing 10, the upper casing 10 upper end fixedly connected with a pull handle 11, be convenient for pull the upper casing 10 through the pull handle 11 and demolish the upper casing 10.

Specifically speaking, a bottom plate 12 is fixedly connected to the lower end of the installation block 1, and the bottom plate 12 is fixedly connected with the installation block 1 through a plurality of second bolts 13, so that the installation block 1 can be conveniently and rapidly installed in a limiting mode in the later period.

Specifically, a strip hole 14 is formed on each movable soft metal sealing ring 6, so that the gap between the screen plate 4 and the impeller 9 can be conveniently adjusted by adjusting the positions of the movable soft metal sealing rings 6 left and right.

When the utility model is used, the installation block 1 and the unit can be stably installed through the second bolt 13 and the bottom plate 12; the pull handle 11 can be pulled by the crane, the upper shell 10 is pulled by the pull handle 11, and the upper shell 10 is detached from the upper end of the air inlet pipe 3; the position of the movable soft metal sealing ring 6 can be moved by adjusting the gap between the first bolt 8 and the pressing plate 7, so that the movable soft metal sealing ring 6 moves back and forth along the axial direction parallel to the rotating rod 2, and the control of the sealing gap between the screen plate 4 and the impeller 9 is realized.

The utility model has the following specific advantages:

1) The original sealing sleeve extending into the impeller 9 with a gap is changed into a butt joint mode from a sleeve joint mode, and the gap between the screen plate 4 and the impeller 9 in the air inlet of the fan can be minimized by axially adjusting the movable soft metal sealing ring 6, so that the gap can be as small as 0.2mm. The clearance between the air inlet of the primary dust removal fan of the original converter and the impeller 9 is generally more than 4 mm. Since the smaller the gap between the inlet and the impeller 9, the smaller the risk of internal leakage, the device can greatly reduce the loss of internal leakage.

2) The impeller 9 of the air inlet is changed from the sleeve opening relation to the opposite opening relation, so that the impeller 9 and the rotor can be conveniently and quickly disassembled and assembled, workers are not required to drill into the inlet casing to disassemble the air inlet before the impeller 9 is maintained or cleaned, and then the impeller 9 is disassembled, so that the potential safety hazard of easy coal gas entering the casing by the workers is avoided; because the present utility model can directly hoist the rotor by lifting the upper casing 10. The fan impeller 9 is arranged outside the fan rotor, so that maintenance and rotor cleaning are convenient, and in the past, workers are required to drill into an inlet shell of the fan to split the impeller and the rotor firstly when cleaning and maintaining the rotor, and then the rotor is taken out to be cleaned and maintained. Because the impeller is mounted outside the rotor, the impeller is required to be first removed and installed.

In the description of the present utility model, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "another end," "upper," "one side," "top," "inner," "front," "center," "two ends," etc. indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, whereby features defining "first," "second," "third," "fourth" may explicitly or implicitly include at least one such feature.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other or in interaction with each other, unless explicitly defined otherwise, the meaning of the terms described above in this application will be understood by those of ordinary skill in the art in view of the specific circumstances.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. An air inlet structure of convenient dismouting of dust removal fan of converter, its characterized in that: including a installation piece (1) upper end is connected with a bull stick (2) through the bearing rotation installation piece (1) is close to one side fixedly connected with intake pipe (3) of bull stick (2) intake pipe (3) are close to and are provided with two otter board (4) on the inner wall of installation piece (1) one side upper and lower symmetry, every otter board (4) is kept away from one side of installation piece (1) and is all offered a screw hole (5), every one side of screw hole (5) all activity is provided with a movable soft metal seal circle (6), every movable soft metal seal circle (6) is kept away from one side of otter board (4) all is provided with a clamp plate (7), every clamp plate (7) all are in the same place through a first bolt (8) and a screw hole (5) and a movable soft metal seal circle (6) that correspond the one end that installation piece (1) was kept away from to bull stick (2) is connected with an impeller (9).

2. The air inlet structure of the converter primary dust removal fan convenient to disassemble and assemble is characterized in that: an upper casing (10) is movably sleeved at the upper end of the air inlet pipe (3), and a pull handle (11) is connected at the upper end of the upper casing (10).

3. The air inlet structure of the converter primary dust removal fan convenient to disassemble and assemble is characterized in that: the lower end of the installation block (1) is provided with a bottom plate (12), and the bottom plate (12) is connected with the installation block (1) through a plurality of second bolts (13).

4. The air inlet structure of the converter primary dust removal fan convenient to disassemble and assemble is characterized in that: each movable soft metal sealing ring (6) is provided with a strip hole (14).