CN217222876U - Top suction hood air inlet flow field adjusting device - Google Patents

Abstract

The utility model relates to a top suction hood air inlet flow field adjusting device, including the top suction hood body, its technical essential is: the top suction hood body center is equipped with a dust collection section of thick bamboo, the section of thick bamboo that gathers dust includes the upper end and corresponds the urceolus of being connected with top suction hood body top wind gap, locate the concentric inner tube in the urceolus, inner tube and urceolus closely laminate, the lower extreme of urceolus extends to and follows place height and mounting flange under the top suction hood on the vertical direction, fixed sealed lid on the flange, the lateral wall of urceolus is equipped with the multiunit hole of induced drafting along its even interval of circumference, the lateral wall of inner tube is equipped with the inlet scoop that multiunit and inlet scoop corresponding along its even interval of circumference, the group number in hole of induced drafting is the same with the group number of inlet scoop, be equipped with the horizontal adjustment slot hole in addition on the lateral wall of urceolus, be equipped with the promotion post that passes the horizontal adjustment slot hole and reach the urceolus outside on the outer peripheral face of inner tube. The device solves the problem that the airflow carries dust to escape from the volume of the top suction cover, and compared with similar products, the device has high dust collection efficiency and flexible flow field adjustment.

Description

Top suction hood air inlet flow field adjusting device

Technical Field

The utility model relates to a cover structure is inhaled on top that dust pelletizing system used, concretely relates to cover air inlet flow field adjusting device is inhaled on top, wide application in each entrapment point of trade dust remover systems such as cement, metallurgy, electric power, the environment dust pelletizing system that specially adapted flue gas volumn is big, the dusty concentration is high, the operating mode is changeable.

Background

With the stricter requirements on the environmental-friendly emission concentration, the application of the dust remover is more and more extensive. The key of ensuring that the environment of a working post reaches the standard is the trapping cover of a core element of the dust remover system, the trapping efficiency is not high, the trapping is not rapid, and the air flow can carry dust to escape from the volume of the trapping cover, so that the environment of the working post does not reach the standard, and the trapping effect of the dust-containing air flow at the working point is the important factor in environmental dust removal.

At present, a top suction cover, namely a trapping cover, generally adopts a method of increasing the volume and increasing the negative pressure of a cover opening to improve the trapping efficiency, but the method has the following problems in the using process: 1. the volume is increased, so that the manufacturing cost is increased, the roof suction cover with large volume can bear the roof beam and roof of a factory building, and the roof suction cover can interfere with the ground or overhead equipment; 2. the negative pressure of the cover opening is improved to influence the type selection of the fan, the power of the motor is increased, the operation cost is improved, and the energy waste is caused.

Disclosure of Invention

The utility model aims at providing a simple structure, use reliable top suction hood air inlet flow field adjusting device, solve the air current and carry the dust and follow the problem of interior escape of top suction hood volume, compare with like product, dust collection efficiency is high, and the flow field adjustment is nimble.

The technical scheme of the utility model is that:

the utility model provides a top suction hood air inlet flow field adjusting device, includes the top suction hood body, its technical essential is: the utility model discloses a dust collection device, including the top suction hood body, the top suction hood body center is equipped with a dust collection section of thick bamboo, a dust collection section of thick bamboo includes that upper end and top suction hood body top wind gap correspond the urceolus of being connected, locate the concentric inner tube in the urceolus, the inner tube closely laminates with the urceolus, the lower extreme of urceolus extends to and follows place height and mounting flange under the top suction hood in the vertical direction, fixed sealed lid on the flange, the lateral wall of urceolus is equipped with the multiunit hole of induced drafting along its circumference even interval, the lateral wall of inner tube is equipped with the inlet scoop that multiunit and inlet scoop that the hole corresponds along its circumference even interval, the group number in hole of induced drafting is the same with the group number of inlet scoop, be equipped with the horizontal adjustment slot hole in addition on the lateral wall of urceolus, be equipped with on the outer peripheral face of inner tube and pass the promotion post in the horizontal adjustment slot hole reachs the urceolus outside.

Foretell top suction hood air inlet flow field adjusting device, every group induced draft hole comprises along a plurality of horizontal long suction holes that urceolus direction of height is even to setting up from top to bottom, every group inlet scoop comprises along a plurality of fretwork mouths that inner tube direction of height is even to setting up from top to bottom, each horizontal long suction hole of same group forms a plurality of units of induced drafting, every fretwork mouth corresponds an unit of induced drafting, when the fretwork mouth has the overlap region with the unit of induced drafting, urceolus and inner tube intercommunication.

Foretell top suction hood air inlet flow field adjusting device, the position that the urceolus lower extreme inboard corresponds between two sets of holes that induced drafts is fixed with rotatory spout, insert along inserting under the inner tube in the rotatory spout, the inner tube lower part is equipped with the dust blocking board that shelters from rotatory spout to the dust in the flue gas of avoiding entering into the inner tube falls into rotatory spout, influences the inner tube and slides along rotatory spout.

In the top suction cover air inlet flow field adjusting device, the top suction cover body is conical, the lower part is wide, and the upper part is narrow, and the diameter of the outer cylinder is 1/4-1/3 of the diameter of the lower port of the top suction cover body.

The utility model has the advantages that:

1. the dust collection cylinder formed by the inner cylinder and the outer cylinder is equivalent to a dust suction inlet which extends downwards and is closer to a dust raising point, so that the suction speed is effectively improved, and the dust in the volume of the top suction cover is sucked away more effectively.

2. The flange of urceolus and sealed lid cooperation have certain baffle function of flow equalizing, avoid the phenomenon of the inside local vortex that appears of the top suction cover body. And meanwhile, the sealing cover can be detached during maintenance, so that equipment is convenient to maintain and clean.

3. The inner cylinder can rotate in the outer cylinder, when the aperture ratio is the largest, the air suction hole of the inner cylinder is overlapped with the air suction opening of the outer cylinder, and when the aperture ratio is zero, the non-hollow part of the inner cylinder is overlapped with the opening part of the outer cylinder. The position of the inner barrel is adjusted by the pushing column, and the aperture ratio can be any value between the maximum aperture ratio and zero aperture ratio. When dust pelletizing system pipe network local resistance is uneven, the utility model discloses can be at certain extent adjustment resistance to change the branch pipe resistance. When the working condition changes, the aperture ratio of the dust collecting cylinder can be changed, so that the dust collecting cylinder is suitable for new working conditions. Then the utility model discloses compare with traditional top suction hood and have advantages such as the entrapment is fast, the air inlet flow field is adjustable, the flow field equipartition is effectual.

Drawings

FIG. 1 is a schematic view of the present invention;

FIG. 2 is a schematic view of the construction of the dust collection canister;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic structural view of an outer cylinder of the dust collecting cylinder;

FIG. 5 is a schematic view of the inner cylinder structure of the dust collecting cylinder;

FIG. 6 is a partial schematic view of the rotary chutes and the dust baffles of the inner and outer cylinders.

In the figure: 1. the device comprises a top air port, 2. a top suction cover body, 3. an outer cylinder, 4. a horizontal long suction hole, 5. a flange, 6. a sealing cover, 7. an inner cylinder, 8. a horizontal adjusting long hole, 9. a pushing column, 10. a hollow hole, 11. a rotary chute and 12. an ash baffle.

Detailed Description

As shown in fig. 1-6, the top suction hood intake airflow field adjusting device includes a top suction hood body 2, and a dust collecting barrel is disposed in the center of the top suction hood body 2.

The dust collection cylinder comprises an outer cylinder 3 and a concentric inner cylinder 7, wherein the upper end of the outer cylinder 3 is correspondingly connected with the top air opening 1 of the top suction hood body, the concentric inner cylinder 7 is arranged in the outer cylinder 3, and the inner cylinder 7 is tightly attached to the outer cylinder 3. The lower end of the outer cylinder 3 extends to the height of the lower edge of the top suction cover body 2 in the vertical direction and is fixed with a flange 5, and a sealing cover 6 is fixed on the flange 5. The lateral wall of urceolus 3 is equipped with the multiunit hole of induced drafting along its circumference even interval, the lateral wall of inner tube 7 is equipped with the inlet scoop that multiunit and hole of induced drafting correspond along its circumference even interval, the group number in hole of induced drafting is the same with the group number of inlet scoop. The side wall of the outer cylinder 3 is additionally provided with a horizontal adjusting long hole 8, and the peripheral surface of the inner cylinder 7 is provided with a pushing column 9 which penetrates through the horizontal adjusting long hole 8 and reaches the outer side of the outer cylinder 3.

In this embodiment, each group of air suction holes is composed of a plurality of horizontal long air suction holes 4 uniformly arranged from top to bottom along the height direction of the outer cylinder 3, each group of air suction ports is composed of a plurality of hollowed-out openings 10 uniformly arranged from top to bottom along the height direction of the inner cylinder 7, each horizontal long air suction hole 4 of the same group forms a plurality of air suction units, each hollowed-out opening 10 corresponds to one air suction unit, and when the hollowed-out openings 10 and the air suction units have an overlapping area, the outer cylinder 3 is communicated with the inner cylinder 7. The inboard position that corresponds between two sets of holes that induced drafts of 3 lower extremes of urceolus has rotatory spout 11, insert along inserting under the inner tube 7 in the rotatory spout 11, the inner tube 7 lower part is equipped with the dust blocking board 12 that shelters from rotatory spout 11 to the dust in the flue gas of avoiding entering into the inner tube 7 falls into rotatory spout 11, influences the inner tube 7 and slides along rotatory spout 11. The top absorbing cover body 2 is in a cone shape, the bottom is wide and the top is narrow, and the diameter of the outer cylinder 3 is 1/4-1/3 of the diameter of the lower port of the top absorbing cover body 2.

The working principle is as follows:

the dust-containing gas is generated below the top suction cover body 2 and upwards enters the top suction cover body 2 to be rapidly sucked away by the dust collecting cylinder. The top suction cover body 2 provides a volume, the sealing cover 6 enables smoke dust to be uniformly distributed around, and finally, the smoke dust in the volume is completely sucked away by the dust collecting cylinder. The inner cylinder 7 is rotated through the pushing column 9, when the aperture ratio is maximum, the hollow part of the inner cylinder 7 is overlapped with the aperture part of the outer cylinder 3, and when the aperture ratio is zero, the non-hollow part of the inner cylinder 7 is overlapped with the aperture part of the outer cylinder 3. The position of the inner cylinder 7 is adjusted, and the aperture ratio can be any value between the maximum aperture ratio and zero aperture ratio. The utility model discloses the air inlet flow field adjustment is respond well, has fine flow field regulatory function.

The above detailed description of the embodiments of the present invention is only for the purpose of describing the preferred embodiments of the present invention, and should not be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention should be covered by the present patent.

Claims (4)

1. The utility model provides a top suction hood air inlet flow field adjusting device, includes the top suction hood body, its characterized in that: the utility model discloses a dust collection device, including the top suction hood body, the top suction hood body center is equipped with the section of thick bamboo that gathers dust, gather dust the section of thick bamboo and include that upper end and top suction hood body top wind gap correspond the urceolus of being connected, locate the concentric inner tube in the urceolus, the inner tube closely laminates with the urceolus, the lower extreme of urceolus extends to the top suction hood down along high and mounting flange in place in the vertical direction, fixed sealed lid on the flange, the lateral wall of urceolus is equipped with the multiunit hole of induced drafting along its even interval of circumference, the lateral wall of inner tube is equipped with the inlet scoop that multiunit and inlet scoop correspond along its even interval of circumference, the group number in hole of induced drafting is the same with the group number of inlet scoop, be equipped with the level (l) regulation slot hole in addition on the lateral wall of urceolus, be equipped with on the outer peripheral face of inner tube and pass the promotion post in the level (l) regulation slot arrival urceolus outside.

2. The top suction hood intake air flow field adjusting device of claim 1, characterized in that: each group of air suction holes are formed by a plurality of horizontal long air suction holes which are uniformly arranged from top to bottom along the height direction of the outer cylinder, each group of air suction holes are formed by a plurality of hollowed-out holes which are uniformly arranged from top to bottom along the height direction of the inner cylinder, each horizontal long air suction hole of the same group forms a plurality of air suction units, each hollowed-out hole corresponds to one air suction unit, and when the hollowed-out holes and the air suction units have overlapped areas, the outer cylinder is communicated with the inner cylinder.

3. The top suction hood intake air flow field adjusting device of claim 1, characterized in that: the inner side of the lower end of the outer barrel is fixed with a rotary sliding groove corresponding to the position between the two groups of air suction holes, the lower edge of the inner barrel is inserted into the rotary sliding groove, and an ash blocking plate for blocking the rotary sliding groove is arranged at the lower part of the inner barrel.

4. The top suction hood air intake flow field adjusting device of claim 1, wherein: the top suction cover body is in a cone shape, the lower part of the top suction cover body is wide, the upper part of the top suction cover body is narrow, and the diameter of the outer cylinder is 1/4-1/3 of the diameter of the lower port of the top suction cover body.

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