CN217941294U

CN217941294U - Isolated suction hood of fluidized bed air exit

Info

Publication number: CN217941294U
Application number: CN202222252122.2U
Authority: CN
Inventors: 戴兵
Original assignee: Suzhou Daken Filtration Technology Co ltd
Current assignee: Suzhou Daken Filtration Technology Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-12-02
Anticipated expiration: 2032-08-25

Abstract

The utility model relates to an isolated suction hood of fluidized bed air exit belongs to powder processing equipment trade technical field, the fixed setting of dust hood outer loop is in the dust hood inner ring outside, its dust hood outer loop is hollow cavity, the upper end is sealed, one side transversely establishes the dust remover interface that runs through, the lower extreme has seted up multiunit sieve mesh dust absorption mouth, the dust remover interface link up with sieve mesh dust absorption mouth, the edge of sieve mesh dust absorption mouth is encircleed and is provided with dust absorption skirt cover, the dust hood inner ring is hollow cavity, dust hood inner ring upper end is equipped with the equipment connector, dust hood inner ring lower extreme is equipped with the interface of unloading, its edge is equipped with the width and is 30mm outside; the isolated dust hood has simple structural design, simple and convenient operation and use, and convenient installation and disassembly, and can be applied to various kinds of equipment with large dust.

Description

Isolated suction hood of fluidized bed air exit

Technical Field

The utility model relates to an isolated suction hood of fluidized bed air exit belongs to powder processing equipment trade technical field.

Background

Uniformly piling solid particles in a container with an open bottom to form a bed layer, wherein if fluid passes through the bed layer from top to bottom, the particles do not move, and the bed layer becomes a solid bed; if the fluid passes through the bed layer from top to bottom, the condition is the same as that of a solid bed when the flow rate is low, the particles move to expand the bed layer when the flow rate is increased, the particles can move away from each other and move in the fluid when the flow rate is further increased, and the movement is more violent when the flow rate is higher and the particles move in all directions in the bed layer. The last case is called the fluidized solid state, and the bed of particles after the fluidized state is called the fluidized bed. The technology for applying the catalyst to actual production and life is the fluidized bed technology.

Fluidized bed fluidization velocity the bed can be divided into a critical fluidization velocity and a carry-over velocity according to the different states of the bed. In practice, the diameter of the particles in the bed cannot be exactly the same, each particle has a different value, which should be taken into account when selecting the fluidization velocity, and even if the particle distribution is narrow and the velocity range is wide, it should be taken into account that irregularities such as channeling or slugging may occur when the velocity is too small or too large.

In order to increase the production intensity of the plant, it is generally desirable to have as large an air flow velocity as possible, which is above the entrainment velocity of certain particles and is not tasteable if a high-efficiency cyclone is arranged behind the fluidized bed. This has been applied in actual production. The increase in the gas velocity cannot be obtained by taking into account only the operating flexibility of the fluidized bed itself, but is also limited by the fact that the contact time of the gas with the solid is guaranteed and the capacity of the gas-conveying mechanism is adapted to the increase in the fluid resistance.

In the polyethylene production technology, the fluidized bed technology occupies a considerable position due to the characteristics of stability, flexibility, simplicity, economy and safety, and is generally applied. In the fluidized bed for ethylene polymerization, the solid particles are polyethylene resin particles and a very small amount of catalyst particles, and the fluidizing gas is a mixture of nitrogen, ethylene, comonomer butene-1, and hydrogen. In the fluidized bed, ethylene and comonomer butene-1 are polymerized under the action of catalyst to produce polyethylene on the surface of catalyst particle, and finally polyethylene particle containing catalyst particle is formed.

Fluidized bed equipment uses gas pressure big, to the course of working of dust, flying of its dust is unavoidable, how can eliminate a large amount of dust and float everywhere and scatter, when the polluted environment, also influencing people's physical and mental health, excessive dust can't obtain to arrange and dredge, has the hidden danger of dust explosion when meetting open fire, and the urgent need designs an installation and simple to use, can also play the device of inhaling the dust and solve this problem.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned flying of its dust and can't avoid, how can eliminate a large amount of dust and float scattered everywhere, when the polluted environment, also influencing people's physical and mental health, excessive dust can't obtain arranging and dredges, has the problem of dust explosion's hidden danger when meetting open fire, the utility model aims to provide an isolated suction hood of fluidized bed air exit, the isolated suction hood that structural design is simple, the operation is used portably, and the installation and dismantlement are also convenient, can apply to on the equipment that various dusts are big.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides an isolated suction hood of fluidized bed air exit, comprises dust hood inner ring 3, dust hood outer loop 4 and dust absorption skirt cover 5, its characterized in that: fixed the setting in the 3 outsides of dustcoat inner ring of dustcoat outer loop 4, its dustcoat outer loop 4 is hollow cavity, the upper end is sealed, one side transversely establishes the dust remover interface 1 that runs through, multiunit sieve mesh dust absorption mouth 7 has been seted up to the lower extreme, dust remover interface 1 link up with sieve mesh dust absorption mouth 7, the edge of sieve mesh dust absorption mouth 7 is encircleed and is provided with dust absorption skirt cover 5, dustcoat inner ring 3 is hollow cavity, 3 upper ends of dustcoat inner ring are equipped with

equipment connector

2, 3 lower extremes of dustcoat inner ring are equipped with interface 6 of unloading, its edge is equipped with the width and is 30mm outside.

The dust hood inner ring 3, the dust hood outer ring 4 and the dust absorption skirt cover 5 are made of stainless steel materials.

The inner dust hood ring 3, the outer dust hood ring 4 and the dust absorption skirt cover 5 are made of iron sheets, white paint with the thickness of 0.3-0.5mm is sprayed on the surfaces, and the chromium plating thickness of the inner walls is 0.3-0.5mm.

The dust remover interface 1 and the dust cover inner ring 3 form a vertical angle.

The beneficial effects of the utility model reside in that:

by the fixed setting in the 3 outsides of dustcoat inner ring of dustcoat outer loop 4, its dustcoat outer loop 4 is hollow cavity, the upper end is sealed, one side transversely establishes the dust remover interface 1 that runs through, multiunit sieve mesh dust absorption mouth 7 has been seted up to the lower extreme, dust remover interface 1 link up with sieve mesh dust absorption mouth 7, sieve mesh dust absorption mouth 7 edge is encircleed and is provided with dust absorption skirt cover 5, dustcoat inner ring 3 is hollow cavity, 3 upper ends of dustcoat inner ring are equipped with equipment connector 2, the lower extreme is equipped with interface 6 of unloading, its edge is equipped with the width and is 30mm outside. The dust hood inner ring 3, the dust hood outer ring 4 and the dust suction skirt 5 are made of stainless steel materials. The inner ring 3 of the dust hood, the outer ring 4 of the dust hood and the dust absorption skirt cover 5 are made of iron sheets, the surface is sprayed with white paint with the thickness of 0.3-0.5mm, the inner wall is plated with chrome with the thickness of 0.3-0.5mm, and the interface 1 of the dust remover and the inner ring 3 of the dust hood form a vertical angle.

The isolated dust hood has simple structural design, simple and convenient operation and use, and convenient installation and disassembly, and can be applied to various kinds of equipment with large dust.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the overall structure of the present invention.

In the figure: a dust remover interface 1, an equipment connector 2, a dust cover inner ring 3, a dust cover outer ring 4, a dust absorption skirt cover 5,

A discharging port 6 and a sieve hole dust suction port 7.

Detailed Description

The technical solution of the present invention will be clearly and completely described below:

as shown in the attached figures 1-2, the dust hood consists of a dust hood inner ring 3, a dust hood outer ring 4 and a dust absorption skirt cover 5, and is characterized in that: the fixed setting in the 3 outsides of dustcoat inner ring of dustcoat outer loop 4, its dustcoat outer loop 4 is hollow cavity, the upper end is sealed, one side transversely establishes the dust remover interface 1 that runs through, multiunit sieve mesh dust absorption mouth 7 has been seted up to the lower extreme, dust remover interface 1 link up with sieve mesh dust absorption mouth 7, the edge of sieve mesh dust absorption mouth 7 is encircleed and is provided with dust absorption skirt cover 5, dustcoat inner ring 3 is hollow cavity, 3 upper ends of dustcoat inner ring are equipped with equipment connector 2, the lower extreme is equipped with interface 6 of unloading, its edge is equipped with the width and is the 30mm outside. The dust hood inner ring 3, the dust hood outer ring 4 and the dust absorption skirt cover 5 are made of stainless steel materials or iron sheets, the surface is sprayed with white paint with the thickness of 0.3-0.5mm, and the inner wall is plated with chrome with the thickness of 0.3-0.5mm. The dust remover interface 1 and the dust cover inner ring 3 form a vertical angle.

The working principle of the isolated dust hood of the air outlet of the fluidized bed is as follows:

the upper end of the dust hood inner ring 3 is provided with an equipment connecting port 2 which is connected with a material conveying device of the fluidized bed, the lower end of the dust hood inner ring is provided with a discharging port 6 which is connected with a feeding device, a dust remover port 1 which is transversely arranged at the side is connected with a dust remover, and when each device is in operation, dust discharged by the feeding device is upwards sucked through a sieve mesh dust suction port 7 and is sucked away from the dust remover port 1 by the dust remover.

Claims

1. The utility model provides an isolated suction hood of fluidized bed air exit, comprises dirt hood inner ring (3), dirt hood outer loop (4) and dust absorption skirt (5), its characterized in that: the utility model discloses a dust hood, including dust hood inner ring (3), dust hood outer loop (4), multiunit sieve mesh dust absorption mouth (7) have been seted up to dust hood outer loop (4), its dust hood outer loop (4) are hollow cavity, the upper end is sealed, dust remover interface (1) that runs through is transversely established to one side, multiunit sieve mesh dust absorption mouth (7) have been seted up to the lower extreme, dust remover interface (1) link up with sieve mesh dust absorption mouth (7), the edge of sieve mesh dust absorption mouth (7) is encircleed and is provided with dust absorption skirt cover (5), dust hood inner ring (3) are hollow cavity, dust hood inner ring (3) upper end is equipped with equipment connector (2), dust hood inner ring (3) lower extreme is equipped with interface (6) of unloading, its edge is equipped with the width and is the 30mm outside.

2. The isolated suction hood for a fluidized bed exhaust outlet as set forth in claim 1, wherein: the dust hood inner ring (3), the dust hood outer ring (4) and the dust absorption skirt cover (5) are made of stainless steel materials.

3. The isolated suction hood for the exhaust outlet of the fluidized bed as set forth in claim 1, wherein: the inner dust hood ring (3), the outer dust hood ring (4) and the dust absorption skirt (5) are made of iron sheets, white paint with the thickness of 0.3-0.5mm is sprayed on the surface of the dust hood, and the chromium plating thickness of the inner wall of the dust hood is 0.3-0.5mm.

4. The isolated suction hood for a fluidized bed exhaust outlet as set forth in claim 1, wherein: the dust remover interface (1) and the dust cover inner ring (3) form a vertical angle.