CN107243419B

CN107243419B - Cyclone separator

Info

Publication number: CN107243419B
Application number: CN201611026027.3A
Authority: CN
Inventors: 掏慧君
Original assignee: Xunlai Fluid Tech Shanghai Co ltd
Current assignee: Xunlai Fluid Tech Shanghai Co ltd
Priority date: 2016-11-22
Filing date: 2016-11-22
Publication date: 2023-09-26
Anticipated expiration: 2036-11-22
Also published as: CN107243419A

Abstract

The invention provides a cyclone separator, and belongs to the technical field of machinery. The cyclone separator solves the problem that the existing cyclone separator has poor separation effect because solid particles can enter into the upward cyclone flow when the gas is high-speed. The cyclone separator comprises a cylinder body and a conical body arranged below the cylinder body, wherein an air inlet pipe is arranged at the side part of the upper end of the cylinder body, an air outlet pipe is arranged at the top of the cylinder body, and an accelerating and separating structure for accelerating the separation of solid particles is arranged on the inner side wall of the cylinder body. The downward swirling air flow is enabled to continue to rotate downwards along the surface of the accelerating separation structure through the separation structure on the side wall, and the downward swirling air flow is formed on the conical body at the bottom, so that pure air flow is discharged from the air outlet pipe.

Description

Cyclone separator

Technical Field

The invention belongs to the technical field of machinery, and relates to a cyclone separator.

Background

The cyclone separator is used as an important separation device, can solve the influence of dust and mist in the pipe gas to the transportation and use work, and is widely used in the fields of natural gas, petroleum, chemical industry, coal-fired power plants, environmental protection and the like.

The method separates solid-liquid phase impurities and fine dust particles from air flow by utilizing the principles of gravity sedimentation, centrifugal sedimentation, cyclone separation and the like. When the gas carrying solid particles and liquid drops enters the cyclone from the tangential direction, the gas can rotate at a high speed along the wall, and the gas moves downwards in a spiral path to the bottom of the cyclone to form an outer layer of lower cyclone gas flow, and the lower cyclone gas flow is reversely folded upwards after reaching the bottom to become an inner layer of upper cyclone gas flow, is discharged from an exhaust port of the separator and enters a conveying pipeline.

The conventional cyclone separator has the disadvantage that the separated solid particles are carried away again by the upper cyclone flow of the inner layer at a high speed of more than 30 m/s of gas due to the cylindrical separation chamber, so that the purity effect of the separation is poor. To solve this problem, it is common practice to perform a cyclone separator in multiple stages, such secondary or multi-stage separation, which results in a cyclone separator in one stage having a lower purity, while the secondary cyclone separator has a smaller inlet pressure and lower efficiency.

Disclosure of Invention

The invention provides a cyclone separator aiming at the problems in the prior art, and aims to solve the technical problems of improving the purity effect and efficiency.

The invention is realized by the following technical scheme:

the cyclone separator comprises a cylinder body and a conical body arranged below the cylinder body, wherein an air inlet pipe is arranged at the side part of the upper end of the cylinder body, and an air outlet pipe is arranged at the top of the cylinder body.

The downward swirling air flow is enabled to continue to rotate downwards along the surface of the accelerating separation structure through the separation structure on the side wall, and the downward swirling air flow is formed on the conical body at the bottom, so that pure air flow is discharged from the air outlet pipe. The separation is carried out in only one separation chamber, so that the airflow path is short and the efficiency is high. Meanwhile, due to the existence of the accelerating separation structure, the effect of solid-gas separation is improved, and higher purity is obtained in a shorter path.

Further, the accelerating and separating structure comprises a plurality of strip-shaped barrier strips which are arranged along the axial line direction of the cylinder body, wherein the barrier strips are uniformly distributed along the circumferential direction of the cylinder body, gaps among the barrier strips form a descending channel of solid particles, and ports among the barrier strips form an inlet of the solid particles.

Further, the barrier strips are fixed on the inner side surface of the cylinder body, the barrier strips are provided with a front surface, a guide side surface and a back side surface, the front surface is an arc-shaped surface facing the axial lead of the cylinder body, the front surface is inclined relative to the inner side surface of the cylinder body and is inclined in the same circumferential direction, the guide side surface is an arc-shaped surface connected with the front surface and opposite to the downward airflow, the back side surface is an arc-shaped surface connected with the front surface, the back side surface of one barrier strip and the guide side surface of the adjacent barrier strip form the downward channel, and the downward channel is circular.

Further, the guide side face and the back side face are close to each other, so that the middle thickness of the barrier strip is smaller than the thickness of the end part where the front surface is located.

Further, a cover cap is arranged at the upper part of the cylinder body to cover all the upper ports of the downlink channels, the cover cap is provided with an annular air guide channel, the air guide channel is communicated with the downlink channels, and a branch pipe is further arranged on the air inlet pipe and is communicated with the upper air guide channel.

Compared with the prior art, the cyclone separator has the advantages that the cyclone separator enables the downward cyclone air flow to continue downward along the surface of the separation structure through the accelerating separation structure on the side wall, and the cyclone separator is separated in one separation chamber, so that the air flow path is short and the efficiency is high. Meanwhile, due to the existence of the accelerating separation structure, the effect of solid-gas separation is improved, and higher purity is obtained in a shorter path.

Drawings

Fig. 1 is a schematic perspective view of the present cyclone separator.

Fig. 2 is a perspective view of the inside of the present cylinder.

Fig. 3 is a schematic top view of fig. 2.

Fig. 4 is a schematic top view of fig. 1.

Fig. 5 is a cross-sectional view of A-A in fig. 4.

Detailed Description

The following is a specific embodiment of the present invention, and the technical solution of the present invention is further described with reference to the accompanying drawings.

As shown in fig. 1, the cyclone separator comprises a cylinder 1 and a cone-shaped body 2 arranged below the cylinder 1, wherein an air inlet pipe 3 is arranged at the side part of the upper end of the cylinder 1, an air outlet pipe 4 is arranged at the top of the cylinder 1, and an accelerating and separating structure for accelerating the separation of solid particles is arranged on the inner side wall of the cylinder 1.

The specific accelerating and separating structure is shown in fig. 2, and the accelerating and separating structure comprises a plurality of strip-shaped barrier strips 5 which are arranged along the axial line direction of the cylinder body 1, wherein the barrier strips 5 are uniformly distributed along the circumferential direction of the cylinder body 1, gaps among the barrier strips 5 form a descending channel 6 of solid particles, and ports among the barrier strips 5 form inlets of the solid particles. The solid-gas mixed gas entering through the air inlet pipe 3 flows in vertically to the radial direction of the cylinder body 1 to generate downward swirling air flow, and the centrifugal force generated by the downward swirling air flow causes solid particles to be thrown into the downward channel 6, so that the solid particles on the side wall can be accelerated to be accumulated in the downward channel 6 due to the blocking of the downward channel 6, the purity of the downward swirling air flow can be higher and higher, and the efficiency is improved. In order to ensure a good generation of the downdraft, the barrier 5 is fixed to the inner side of the cylindrical body 1, and the barrier 5 is constructed such that, as shown in fig. 3, the barrier 5 has a front surface 51, a guide side surface 52 and a back side surface 53, the front surface 51 is a circular arc surface facing the axis of the cylindrical body 1, the front surface 51 is inclined with respect to the inner side of the cylindrical body 1 and in the same circumferential direction, by which the air flow can smoothly generate a cyclone while a part of the air flow is guided into the downdraft 6, as indicated by the arrow in fig. 3, while the guide side surface 52 is a circular arc surface connecting the front surface 51 and opposing the downdraft, the back side surface 53 is a circular arc surface connecting the front surface 51, the back side surface 53 of one barrier 5 and the guide side surface 52 of the adjacent barrier 5 form the above-mentioned downdraft 6, and the downdraft 6 is circular. Therefore, the structure of the guide side surface 52 and the back side surface 53 can continue the guide, and the secondary downward airflow can be generated, so that the solid particles accumulated on the side surface can be quickly lowered. The guide side surface 52 and the back side surface 53 are close to each other, so that the thickness of the middle of the barrier strip 5 is smaller than that of the end part of the front surface 51, and small vibration is generated at the end part of the front surface 51 by the structure, so that a small amount of solid particles on the front surface 51 can quickly descend.

In order to remove the solid particles in the descending channel 6 as soon as possible and prevent the descending channel 6 from being blocked due to untimely removal, a cover 7 for covering all the upper ports 61 of the descending channel 6 is arranged on the upper part of the cylinder 1, the cover 7 is provided with an annular air guide channel 71, the air guide channel 71 is communicated with the descending channel 6, and a branch pipe 31 is further arranged on the air inlet pipe 3 and communicated with the air guide channel 71.

A swirling airflow is then formed on the cone 2 to expel a clean airflow from the outlet duct 4.

Claims

1. The cyclone separator comprises a cylinder body (1) and a conical body (2) arranged below the cylinder body (1), wherein an air inlet pipe (3) is arranged at the side part of the upper end of the cylinder body (1), and an air outlet pipe (4) is arranged at the top of the cylinder body (1), and the cyclone separator is characterized in that an accelerating and separating structure for accelerating the separation of solid particles is arranged on the inner side wall of the cylinder body (1);

the accelerating and separating structure comprises strip-shaped barrier strips (5) which are arranged along the axial line direction of the cylinder body (1), wherein a plurality of barrier strips (5) are uniformly distributed along the circumferential direction of the cylinder body (1), gaps among the barrier strips (5) form a descending channel (6) of solid particles, and ports among the barrier strips (5) form inlets of the solid particles;

the barrier strips (5) are fixed on the inner side surface of the cylinder body (1) and are provided with a front surface (51), a guide side surface (52) and a back side surface (53), the front surface (51) is an arc-shaped surface facing the axial line of the cylinder body (1), the front surface (51) is inclined relative to the inner side surface of the cylinder body (1) and is inclined in the same circumferential direction, the guide side surface (52) is an arc-shaped surface connected with the front surface (51) and opposite to the downward airflow, the back side surface (53) is an arc-shaped surface connected with the front surface (51), the back side surface (53) of one barrier strip (5) and the guide side surface (52) of the adjacent barrier strip (5) form the downward channel (6), and the downward channel (6) is circular;

the upper part of the cylinder body (1) is provided with a cover cap (7) for covering all the upper ports (61) of the downlink channels (6), the cover cap (7) is provided with an annular air guide channel (71), the air guide channel (71) is communicated with the downlink channels (6), and the air inlet pipe (3) is also provided with a branch pipe (31) communicated with the upper air guide channel (71).