CN206152503U - Light dust dust collector based on whirl flow field - Google Patents

Abstract

The utility model relates to a lightweight dust removal device based on a swirling flow field. Its characteristics are: it includes a dust collection chamber (4), the middle of the bottom of the dust collection chamber (4) communicates with the dust collection bucket (1) through a dust collection pipe (3), and the dust collection chamber (4) is a hollow cylindrical shell body, on the outer wall of the dust collecting chamber (4), there are at least three air inlet pipes communicating with the inside of the dust collecting chamber (4) along the circumferential direction, and each air inlet pipe is connected with the outer wall of the dust collecting chamber (4) The included angles are all acute angles. The beneficial effects of the utility model are as follows: 1), the utility model carries the dust-laden airflow into the circular dust collection chamber with a certain flow rate and dynamic pressure, and forms a high-speed swirling flow field under the action of the airflow at the air inlet. The central velocity zero zone formed by the flow field realizes the dust removal of extremely light and extremely small particle size dust. 2) The device of the utility model adopts a two-level dust removal structure, the dust collection chamber is a first-level dust removal, and the funnel mechanism is a second-level dust removal, which improves the dust removal effect.

Description

Lightweight dust removal device based on swirling flow field

technical field

The utility model relates to a lightweight dust removal device based on a swirling flow field.

Background technique

There are many types of existing dust removal methods and dust collectors, including gravity sedimentation dust removal, inertial dust removal, special dust removal structure, water sprinkler dust removal, S-type dust removal and cyclone dust removal, etc. The existing dust removal device is mainly aimed at the collection and treatment of large particles and particle garbage with relatively high air density. For large particle garbage, dust removal is based on self-weight sedimentation; , using the difference in inertia to achieve the separation of particles and air.

For extremely light dust and micron-sized dust with a particularly small particle size, its inertia is not enough to break away from the airflow, and it will be discharged out of the dust collector along with the airflow. Existing dedusting devices are basically unable to handle this type of dust. The existing dust removal devices are basically aimed at relatively simple space environments. For complex space environments that require multi-stage dust removal for complex space environments, most of the existing dust removal methods and devices face the problem of low dust removal efficiency, and currently there is no A method and a dust removal device for such dust.

Utility model content

The purpose of the utility model is to provide a light dust removal device based on the swirling flow field, which can realize the dust removal of extremely light and extremely small particle size dust.

A light-weight dust removal device based on a swirling flow field, which is special in that it includes a dust collection chamber, the middle of the bottom of which is connected to the dust collection bucket through a dust collection pipe, wherein the dust collection chamber is a hollow cylinder In the casing, at least three air intake pipes communicating with the interior of the dust collection chamber are arranged on the outer wall of the dust collection chamber along the circumferential direction, and the angle between each air intake pipe and the outer wall of the dust collection chamber is an acute angle.

Wherein, a cover plate is arranged on the top of the dust collecting chamber, and an air outlet is arranged on the cover plate.

Wherein, three air inlet pipes are evenly distributed on the outer wall of the dust collecting chamber, and the included angle between each air inlet pipe and the outer wall of the dust collecting chamber is the same.

The included angle is 15°.

Wherein, a funnel mechanism is installed between the bottom of the dust collecting chamber and the dust collecting pipe, and the large mouth end of the funnel mechanism communicates with the bottom of the dust collecting chamber while the small mouth end communicates with the dust collecting pipe.

Wherein, a dust discharge valve is installed on the dust collection pipe.

Wherein the dust discharge valve is connected with the motor drive.

Wherein a sealing rubber is arranged between the cover plate and the dust collecting chamber.

Wherein, a filter screen is arranged at the air outlet.

Wherein, an air outlet flange is arranged at the air outlet.

The beneficial effects of the utility model are as follows: 1), the utility model carries the dust-laden airflow into the circular dust collection chamber with a certain flow rate and dynamic pressure, and forms a high-speed swirling flow field under the action of the airflow at the air inlet. The central velocity zero zone formed by the flow field realizes the dust removal of extremely light and extremely small particle size dust. 2) The device of the utility model adopts a two-level dust removal structure, the dust collection chamber is a first-level dust removal, and the funnel mechanism is a second-level dust removal, which improves the dust removal effect. 3) The dust collection chamber of the dust removal device of the present utility model is in the form of three inlets, which can be connected to three dust removal pipes respectively, and realize the dust removal of different parts at the same time, adapt to the complex dust removal space environment, improve the dust removal efficiency, and be environmentally friendly.

Description of drawings

Accompanying drawing 1 is the structural representation of the utility model;

Accompanying drawing 2 is the sectional view of the utility model;

Accompanying drawing 3 is the structure diagram of the dust collection chamber 4 in the utility model.

detailed description

As shown in Figures 1, 2, and 3, the utility model provides a lightweight dust removal device based on a swirling flow field, including a dust collection chamber 4, and the middle of the bottom of the dust collection chamber 4 is connected to the dust collection pipe 3 through a dust collection pipe 3. The bucket 1 communicates, wherein the dust collection chamber 4 is a hollow cylindrical shell, and at least three air inlet pipes communicating with the interior of the dust collection chamber 4 are arranged on the outer wall of the dust collection chamber 4 along the circumferential direction, and each inlet The included angles between the trachea and the outer wall of the dust collecting chamber 4 are acute angles.

Further, a cover plate 6 is arranged on the top of the dust collection chamber 4, an air outlet 9 is arranged on the cover plate 6, and three air inlet pipes are uniformly distributed on the outer wall of the dust collection chamber 4, and each air inlet pipe is connected with the The included angles of the outer walls of the dust collecting chamber 4 are all the same, and the included angle is specifically 15°.

Wherein the funnel mechanism 14 is installed between the bottom of the dust collection chamber 4 and the dust collection pipeline 3 , the large mouth end of the funnel mechanism 14 is communicated with the bottom of the dust collection chamber 4 and its small mouth end is communicated with the dust collection pipeline 3 . In addition, a dust discharge valve 13 is installed on the dust collecting pipeline 3 .

Wherein the dust discharge valve 13 is connected with the motor 2 through transmission, so that the dust discharge valve 13 can be controlled by the motor 2 . A sealing rubber (mat) 16 is provided between the cover plate 6 and the dust collecting chamber 4 . A filter screen 15 and an air outlet flange 8 are arranged at the air outlet 9 .

The concrete principle and method of use of the utility model device are as follows:

The dust-laden air flow enters the dust-collecting chamber 4 at a certain speed from the air inlet on the dust-collecting chamber 4, and the air inlets are evenly distributed on the dust-collecting chamber 4 at a certain angle, forming a high-speed swirling flow in the cavity of the dust-collecting chamber 4 field. After the high-speed swirling flow field reaches a steady state, a zero-velocity zone, that is, a dust accumulation area 10 will be formed in its central area, and the dust in the dust-laden airflow gathers in the dust accumulation area 10 . The air flow flows out of the dust collecting chamber 4 through the air outlet 9 on the cover plate 6 at the top of the dust collecting chamber 4 , and a filter screen 15 is housed in the air outlet 9 . The dust collection chamber 4 corresponding to the lower part of the dust accumulation area 10 is connected to a funnel (mechanism). The big mouth of the funnel mechanism 14 faces upwards and the small mouth faces downward. One end of the dust discharge valve 13 is connected with the motor 2, and the other end is connected with the dust collecting barrel 1 below, so as to realize the collection and processing of dust.

The device of the utility model can control the flow velocity and dynamic pressure of the dust-laden airflow through the fan, and through the simulation analysis and experiment of Fluent software, continuously adjust the incident angle of the air inlet and the flow velocity of the dust-laden airflow, and obtain the best incident angle and flow velocity of the dust-laden airflow. A high-speed swirl flow field is formed in the dust collection chamber 4 to make dust accumulate in the dust accumulation area 10 .

Example 1:

Wherein the dust collection chamber 4 has a cavity with a circular cross section, the top of the dust collection chamber 4 is an open end, and the opening end is sealed with a cover plate 6, and the cover plate 6 is provided with an air outlet 9 for air flow out. The side of the dust collection chamber 4 is provided with three air inlets, which are respectively the first air inlet 5, the second air inlet 7 and the third air inlet 12, and the three air inlets are respectively connected to the suction pipe through flanges. , the dust-laden airflow enters the dust collection chamber 4 through three air inlets respectively and forms a high-speed swirl flow field inside the cavity; the central area of the high-speed swirl flow field forms a speed zero zone, that is, a dust accumulation zone 10. The dust 11 in the dust-laden airflow is collected in the dust accumulation area 10;

A dust outlet is provided at the bottom of the dust collection chamber 4 corresponding to the area of the dust accumulation area 10. A funnel mechanism 14 is connected below the dust outlet. The bottom of the small mouth end of the funnel mechanism 14 is connected with a dust collection pipe 3, one end of the dust collection pipe 3 is connected with the funnel mechanism 14, and the other end is connected with a dust discharge valve 13 connected with the motor 2, and the lower end of the dust discharge valve 13 is connected with the collector. Dust bucket 1. The three air inlets are evenly distributed on the cavity of the dust collection chamber 4 at an angle. A sealing rubber 16 is provided between the cover plate 6 and the dust collecting chamber 4 . The air outlet 9 is provided with a filter screen 15 . The top of the air outlet 9 is provided with an air outlet flange 8 for easy connection with other devices. The dust-laden airflow is a gas-solid two-phase fluid, and the solid particles are extremely light and small-sized dust 11. The inertia of the dust 11 in the swirling airflow is not enough to break away from the airflow, but flows together with the airflow.

In this embodiment, three dust-laden air inlets are provided, and three dust-absorbing pipes are connected through flanges. The three dust-absorbing pipes can be placed in different dust-removing positions according to needs, so as to adapt to the needs of different working environments and improve Dust removal efficiency.

The dust-laden airflow enters the dust collection chamber 4 through three air inlets, and forms a high-speed swirl flow field inside the dust collection chamber 4 cavity. It can be known from theoretical analysis that the high-speed swirl flow field will reach a certain value when the speed reaches a certain value. A velocity zero zone is formed, and the velocity zero zone is located in the central area of the swirl flow field. Through the analysis of Fluent software, the optimal incidence angle of the air inlet and the inlet velocity and dynamic pressure of the dust-laden airflow are obtained. The optimized parameters are now the incidence angle is 15 degrees, so that the dust-laden airflow forms a high-speed swirling flow in the dust collector cavity. Field and velocity zero zone, the extremely light dust will gather in this velocity zero zone along with the swirling airflow. The collected dust is further rotated and accumulated in the funnel mechanism 14, enters the dust collection pipe 3 below, and enters the dust collection bucket 1 through the dust discharge valve 13, so as to realize the dust removal problem of extremely light and extremely small particle size dust, The operation efficiency of the dust removal device based on the cyclone flow field is greatly improved.

The flow velocity of the dust-laden airflow can be adjusted by a fan, and the flow velocity and dynamic pressure of the dust-laden airflow are controlled by the fan. The dust-laden airflow passes through the special structure of the dust collection chamber 4 to form a high-speed swirling flow in the dust collection chamber 4 Flow field.

The content described in the embodiments of this specification is only an enumeration of the realization forms of the utility model concept, and the protection scope of the utility model should not be regarded as limited to the specific forms stated in the embodiments, and the protection scope of the utility model also extends to Equivalent technical means that those skilled in the art can think of according to the concept of the utility model.

Claims (10)

1. A light-duty dust removal device based on a swirl flow field, characterized in that: it comprises a dust collection chamber (4), and the middle of the bottom of the dust collection chamber (4) passes through a dust collection pipe (3) and a dust collection bucket (1) ) connected, wherein the dust collection chamber (4) is a hollow cylindrical shell, and at least three air intake pipes communicating with the inside of the dust collection chamber (4) are arranged on the outer wall of the dust collection chamber (4) along the circumferential direction , and the angle between each air intake pipe and the outer wall of the dust collecting chamber (4) is an acute angle. 2. The light dust removal device based on the swirling flow field as claimed in claim 1, wherein a cover plate (6) is arranged on the top of the dust collection chamber (4), and on the cover plate (6) An air outlet (9) is provided. 3. the light-duty dust removal device based on swirl flow field as claimed in claim 1, is characterized in that: wherein on the outer wall of dust collection chamber (4), three air inlet pipes are evenly distributed, and each air inlet pipe is connected with The included angles of the outer side walls of the dust collecting chamber (4) are all the same. 4. The lightweight dust removal device based on the swirl flow field as claimed in claim 3, wherein the included angle is 15°. 5. The lightweight dust removal device based on swirling flow field as claimed in claim 3, characterized in that: a funnel mechanism (14) is installed between the bottom of the dust collection chamber (4) and the dust collection pipeline (3), The large mouth end of the funnel mechanism (14) communicates with the bottom of the dust collection chamber (4) and the small mouth end communicates with the dust collection pipe (3). 6. The light dust removal device based on swirl flow field according to claim 1, characterized in that: a dust discharge valve (13) is installed on the dust collection pipe (3). 7. The light dust removal device based on swirling flow field according to claim 1, characterized in that: wherein the dust discharge valve (13) is in drive connection with the motor (2). 8. The lightweight dust removal device based on swirling flow field according to claim 1, characterized in that: a sealing rubber (16) is arranged between the cover plate (6) and the dust collection chamber (4). 9. The light dust removal device based on swirl flow field according to claim 1, characterized in that: a filter screen (15) is arranged at the air outlet (9). 10. The light dust removal device based on swirl flow field according to claim 1, characterized in that: an air outlet flange (8) is arranged at the air outlet (9).