CN210584109U

CN210584109U - Nozzle structure of filter bag

Info

Publication number: CN210584109U
Application number: CN201921423693.XU
Authority: CN
Inventors: 周列
Original assignee: Shanghai Jingye Environmental Protection And Energy Technology Co ltd
Current assignee: Shanghai Jingye Environmental Protection And Energy Technology Co ltd
Priority date: 2019-08-29
Filing date: 2019-08-29
Publication date: 2020-05-22
Anticipated expiration: 2029-08-29

Abstract

The utility model provides a nozzle structure of a filter bag, which comprises a mounting hole (1), a reinforcing rib (2), a mounting plate (3), a straight section (4), a drainage hole (5) and an amplifying section (6), wherein the mounting plate (3) is a steel or reinforced fiber hard thickened plate with a certain radian, the radian is matched with the radian of an induced duct of an airflow hole, a plurality of mounting holes (1) are arranged at the four corners of the mounting plate (3), an airflow through hole is arranged in the middle of the mounting plate, the reinforcing rib (2) is arranged at the peripheral edge of the airflow through hole, and the straight section (4) communicated with the through hole is arranged at a right angle with the mounting plate; the upper end of the amplifying section (6) is provided with a drainage hole (5). The design that drainage holes and arc air inlet openings are arranged at the upper end of the nozzle structure is adopted, so that the wind resistance is reduced, and the air flow in the dust remover can enter the air purifying chamber along the field. The straight section of the nozzle structure extends into the amplifying part, so that the reverse flow of air flow is avoided, and the normal work of the filter bags with different pressure differences is guaranteed.

Description

Nozzle structure of filter bag

Technical Field

The utility model belongs to the technical field of air current control, concretely relates to nozzle structure of filter bag, its interface arrangement who is the filter bag of retrieving the urea dust in the urea prilling tower.

Background

The urea granulation process can discharge a large amount of tail gas in the production process, the tail gas contains a large amount of urea dust, and the untreated urea dust scatters and settles with the air everywhere to cause serious environmental pollution. In order to solve the problems of dust pollution and the like, scientific and research technicians invest a large amount of manpower and material resources to research the dry dedusting technology, wherein the bag type dry dedusting technology is the mainstream direction in the dry dedusting technology. In the bag-type dry dust removal technology, an induced draft fan is generally directly connected into a dust removal filter assembly or a filter bag, and induced draft air flow is sucked into a gas purification chamber in a straight-through pipe mode; the airflow field in the urea prilling tower is not a completely pressure-equalizing airflow field, so the airflow distribution in the dust-removing chamber is not even, and all the filter assemblies or filter bags are in different air pressure environments. When the suction airflow introduced by the induced draft fans with the same power sucks filter assemblies or filter bags in different airflow fields, part of the filter assemblies or filter bags often work normally, and the part of the filter bags are crushed under the action of different pressure differences inside and outside the bags and cannot work normally.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the applicant provides a nozzle structure of a filter bag through a plurality of designs and researches, and the nozzle structure is an interface device of the filter bag for recovering urea dust in a urea prilling tower.

According to the technical scheme of the utility model, a nozzle structure of filter bag is provided, the nozzle structure of filter bag includes mounting hole, strengthening rib, mounting panel, straight section, drainage hole and enlarged section, and this mounting panel is the steel or reinforced fiber system stereoplasm thickening plate that has certain radian, the radian is adapted with the induced duct radian of air current hole, is provided with a plurality of mounting holes in the four corners of mounting panel, is provided with the air current through-hole in the middle of the mounting panel, is provided with the strengthening rib at the edge all around of air current through-hole, becomes the right angle setting between the straight section that is linked together with the through-hole and the mounting panel; the upper end (close to the straight section) of the amplifying section is provided with a drainage hole.

Preferably, the straight section and the amplifying section continue to extend into the amplifying section lumen after the intersection. The enlarged section is a cup like "flip-flop". A reinforcing plate is arranged between the straight section and the amplifying section; the reinforcing rib adopts the ring-shaped reinforcing piece, and the reinforcing rib can be integrally formed with the mounting plate, and also can use an elastic piece with certain flexibility. Reinforcing plate and drainage hole interval set up, and the reinforcing plate is four with the drainage hole.

Preferably, the drainage hole is in the shape of a long-strip hole with the radian identical to that of the amplification section, and the reinforcing plate is a triangular supporting plate. The junction of the upper end of the straight section and the mounting plate is in a shape with a certain radian, namely an arc air inlet. The lower end of the straight section extends into the amplification section, and the length of the straight section protruding into the amplification section is one sixth to two thirds of the length of the amplification section.

Compared with the prior art, the utility model provides a straight-through structure or nozzle structure of filter bag has following technical advantage:

the design that drainage holes and arc air inlet openings are arranged at the upper end of a nozzle structure is adopted, so that the wind resistance is reduced, and the air flow in the dust remover can enter a gas purifying chamber along the field.

Secondly, the structural strength of the nozzle structure is enhanced by adopting the design of the reinforcing ribs and the reinforcing cushion sheet; the proper bending degree and the special structure realize the perfect combination with the gas ejector pipe.

And thirdly, the straight section of the nozzle structure extends into the amplifying part, so that the reverse flow of air flow is avoided, and the normal work of the filter bag at different pressure differences is ensured.

Fourthly, the utility model discloses overcome completely that the air current is obstructed and the unstable defect of velocity of flow in traditional joint or nozzle.

Drawings

Fig. 1 is a perspective view of a first circular nozzle according to the present invention;

FIG. 2 is a top view of the circular nozzle of FIG. 1;

FIG. 3 is a side view of the circular nozzle of FIG. 1;

FIG. 4 is a cross-sectional view of the circular nozzle of FIG. 1;

fig. 5 is a perspective view of an elliptical nozzle in accordance with the present invention;

FIG. 6 is a top view of the elliptical nozzle shown in FIG. 5;

FIG. 7 is a cross-sectional view of the elliptical nozzle of FIG. 5;

FIG. 8 is a longitudinal cross-sectional view of the elliptical nozzle shown in FIG. 5;

fig. 9 is a perspective view of a second circular nozzle in accordance with the present invention;

FIG. 10 is a top view of the circular nozzle of FIG. 9;

FIG. 11 is a side view of the circular nozzle of FIG. 9;

FIG. 12 is a cross-sectional view of the circular nozzle of FIG. 1; .

The reference numbers in the figures are in particular: a mounting hole 1; a reinforcing rib 2; a mounting plate 3; a straight section 4; a drainage hole 5; an amplification section 6; a reinforcing plate 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Additionally, the scope of the present invention should not be limited to the particular structures or components described below or to the particular parameters.

The invention is further explained by combining the attached drawings of the specification. As shown in fig. 1, the utility model discloses a perspective view of a first circular nozzle, the perspective view of oval nozzle shown in fig. 5, the perspective view of a second circular nozzle shown in fig. 9, the nozzle structure of a filter bag includes mounting hole 1, strengthening rib 2, mounting panel 3, straight section 4, drainage hole 5 and amplification section 6, this mounting panel 3 is the steel or reinforced fiber hard thickened plate with certain radian, the radian is adapted with the induced duct radian of airflow hole, there are a plurality of mounting holes 1, preferably four at the four corners of mounting panel 3, there are airflow through holes in the middle of the mounting panel, there are strengthening ribs 2 at the edge of airflow through hole, the straight section 4 that is linked together with the through hole is at right angle with the mounting panel; the straight section and the amplifying section 6 are jointed and then continue to extend into the inner cavity of the amplifying section 6, the aperture of the straight section is not more than one half of the aperture of the amplifying section, and preferably the aperture of the straight section is one third of the aperture of the amplifying section; for the hole cross-section, the straight section hole area is no more than one fourth of the hole area of the enlarged section, preferably the straight section hole area is one sixth of the hole area of the enlarged section. The enlarged section 6 is similar to an inverted cup, and a drainage hole 5 is arranged at the upper end (close to the straight section) of the enlarged section. The arrangement of the drainage holes can balance the pressure difference between the inside and the outside of the filter bag, so that the filter bags in different airflow fields can work normally; the straight section and the amplifying section 6 are jointed and then continuously extend into the inner cavity of the amplifying section 6, so that the clean air can directly enter the air purifying chamber and is not polluted by dust-containing air flow.

Further, as shown in fig. 2, 3 and 4, a reinforcing plate 7 is disposed between the straight section and the enlarged section to reinforce the rigidity of the straight section and the enlarged section, so that the straight section and the enlarged section can bear larger airflow pressure. As shown in fig. 1 and 2, the reinforcing rib may be a circular reinforcing piece, and the reinforcing rib may be integrally formed with the mounting plate, or may be an elastic member having a certain flexibility. As shown in FIG. 4, the reinforcing plates are spaced from the drainage holes, and preferably four reinforcing plates and four drainage holes are provided. The drainage hole is preferably in the shape of a long-strip hole with the radian identical to that of the amplification section, and the reinforcing plate is preferably a triangular supporting plate. As shown in fig. 3, the junction between the upper end of the straight section and the mounting plate is in a shape with a certain radian, namely an arc-shaped air inlet, so that the air inlet resistance is effectively reduced; the lower end of the straight section extends into the amplifying section and projects into the amplifying section by a length preferably in the range of one sixth to two thirds, preferably one third, of the length of the amplifying section. As shown in fig. 11, the length of the lower end of the straight section protruding into the enlarged section is equal to the length of the enlarged section. The lower end of the straight section extends into the amplifying section, so that the amplifying section has the function of preventing clean airflow from flowing backwards into the filter bag.

As shown in fig. 1-4, 9-12, the enlarged section is cylindrical and abuts the open filter assembly or bag of the cylinder. As shown in fig. 5-8, the enlarged section is in the shape of an oval cylinder that abuts the filter assembly or bag opening in the oval cylinder. Further, the enlarged section may be designed in other shapes that interface with a correspondingly open filter assembly or filter bag. The flow guide holes of the elliptical nozzle shown in fig. 5-8 are inverted triangular and are adapted to the elliptical nozzle, and the bottom edge ends of the inverted triangular flow guide holes are close to the straight section, so that the balanced flow guide of air flow is facilitated.

Further, the utility model discloses a nozzle structure of filter bag can the integrated into one piece, also can the split equipment, and metal such as steel, aluminium system are chooseed for use to its material and are made, also can choose for use other materials that have high rigidity, high strength to make.

Application scenarios: the urea prilling tower top bag type powder receiving device generally comprises a tower top base and a bag type dust collector, wherein a nozzle structure of a filter bag is applied between the tower top base and the bag type dust collector, namely the bag type dust collector is butted with the tower top base through the nozzle structure; during dust removal operation, the draught fan continuously pumps out gas in the prilling tower, dust particles in tail gas discharged from the urea prilling tower are adsorbed by the filter bag, and clean air enters the air purifying chamber through the filter bag and is discharged through the exhaust port of the draught fan. Wherein the nozzle is suspended above the filter bag, and the nozzle and the filter bag are coaxially arranged with a distance suitable for blowing the air flow from the nozzle into the filter bag; the enlarged section of the nozzle is adjacent to, but not in direct contact with, the mouth of the filter bag.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims.

Claims

1. A nozzle structure of a filter bag is characterized by comprising mounting holes (1), reinforcing ribs (2), a mounting plate (3), a straight section (4), a drainage hole (5) and an amplification section (6), wherein the mounting plate (3) is a steel or reinforced fiber hard thickened plate with a certain radian, the radian is matched with that of an induced duct of an airflow hole, a plurality of mounting holes (1) are arranged at four corners of the mounting plate (3), an airflow through hole is formed in the middle of the mounting plate, the reinforcing ribs (2) are arranged at the peripheral edge of the airflow through hole, and the straight section (4) communicated with the through hole is arranged at a right angle with the mounting plate; the upper end of the amplifying section (6) close to the straight section part is provided with a drainage hole (5).

2. The nozzle structure of a filter bag according to claim 1, wherein the straight section and the enlarged section (6) continue to extend into the cavity of the enlarged section (6) after the intersection, and the diameter of the straight section is not larger than half of the diameter of the enlarged section.

3. Nozzle construction of a filter bag according to claim 1, characterized in that the enlargement section (6) is a cup like an "inverted" cup.

4. Nozzle structure of a filter bag according to claim 1, characterized in that a reinforcement plate (7) is arranged between the straight section and the enlarged section.

5. The nozzle structure of a filter bag according to claim 1, wherein the reinforcing rib is a circular reinforcing plate or a flexible elastic member, and the reinforcing rib is integrally formed with the mounting plate.

6. The nozzle structure of a filter bag according to claim 1, wherein the reinforcing plates are spaced apart from the drainage holes, and the number of the reinforcing plates and the drainage holes is four.

7. The nozzle structure of filter bag according to claim 1, wherein the drainage hole has a shape of an elongated hole having the same radian as the enlarged section, and the reinforcing plate is a triangular support plate.

8. The nozzle structure of a filter bag according to claim 1, wherein the junction between the upper end of the straight section and the mounting plate is formed in a shape having a certain curvature, i.e., a curved air inlet.

9. The filter bag nozzle structure of claim 1, wherein the lower end of the straight section extends into the enlarged section, and the length of the straight section protruding into the enlarged section is one sixth to two thirds of the length of the enlarged section.