A radially expanded annular dust removal channel based on the cyclone separation principle

Abstract

The present invention discloses a radial expansion type annular dust removal channel based on the cyclone separation principle, belonging to the technical field of purification and dust removal, comprising: an airflow inlet, a primary annular dust removal channel section, a two-stage connection section, a secondary annular dust removal channel section and an airflow outlet, the primary annular dust removal channel section comprises a primary channel, the secondary annular dust removal channel section comprises a secondary channel, the airflow inlet, the primary channel, the two-stage connection section, the secondary channel and the airflow outlet are connected in sequence, a first dust removal port is arranged on the terminal outer wall of the primary channel, a second dust removal port is arranged on the terminal outer wall of the secondary channel, the cross-sectional area of ​​the primary channel, the channel cross-sectional area of ​​the two-stage connection section is equal to the cross-sectional area of ​​the secondary channel, and the radial length a1 of the annular dust removal channel on the cross-sectional area of ​​the primary channel is smaller than the radial length a2 of the cross-sectional area of ​​the secondary channel. The present invention has a simple structure, the airflow speed remains unchanged during the motion process, which is conducive to the stability of the airflow, the loss of pressure drop, and high dust removal efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of purification and dust removal, and in particular relates to a radially expanding annular dust removal channel based on the cyclone separation principle. Background Art

[0002] The structure of existing dust removal equipment based on cyclone separation is usually various forms of cyclone cones, and its core structure is that the air flow channel rotates around the central cylinder, thereby generating centrifugal force to separate the dust; its structure is complex, the air flow conditions are complex, it is easy to generate strong turbulence, and the pressure drop loss is large, and the single-stage dust removal efficiency is not high enough. The two-stage and multi-stage dust removal methods often produce extremely large pressure drop losses; and currently, there are very limited devices that use the cyclone separation principle to directly remove dust through the channel. Summary of the invention

[0003] In view of this, the present invention provides a radially expanding annular dust removal channel based on the cyclone separation principle to solve the above-mentioned problem.

[0004] In order to achieve the above object, the present invention adopts the following technical solution:

[0005] A radially expanding annular dust removal channel based on the cyclone separation principle comprises: an air flow inlet, a first-level annular dust removal channel section, a two-level connecting section, a second-level annular dust removal channel section and an air flow outlet, wherein the first-level annular dust removal channel section comprises a first-level channel, and the second-level annular dust removal channel section comprises a second-level channel, the air flow inlet, the first-level channel, the two-level connecting section, the second-level channel and the air flow outlet are connected in sequence, a first dust removal port is arranged on the outer side wall at the end of the first-level channel, and a second dust removal port is arranged on the outer side wall at the end of the second-level channel, the cross-sectional area of ​​the first-level channel and the channel cross-sectional area of ​​the two-level connecting section are equal to the cross-sectional area of ​​the second-level channel, and the radial length a1 of the annular dust removal channel on the cross-section of the first-level channel is smaller than the radial length a2 of the cross-sectional area of ​​the second-level channel.

[0006] Furthermore, a primary dust collecting bucket is provided on the first dust removal port.

[0007] Furthermore, a secondary dust collecting bucket is provided on the second dust removal port.

[0008] Furthermore, it also includes multiple annular dust removal channel sections and multiple connecting sections, the head ends of the multiple annular dust removal channel sections are connected to the end of the secondary annular dust removal channel section, the multiple annular dust removal channel sections are connected through the multiple connecting sections, and the ends of the multiple annular dust removal channel sections are connected to the airflow outlet.

[0009] Furthermore, the relationship between the radial length a1 of the cross section of the primary channel and the radial length a2 of the cross section of the secondary channel is: 1.3a1<a2<2a2.

[0010] Furthermore, the primary annular dust removal channel segment, the secondary annular dust removal channel segment and the plurality of annular dust removal channel segments are located on the same plane.

[0011] Furthermore, the primary annular dust removal channel segment, the secondary annular dust removal channel segment and the plurality of annular dust removal channel segments spirally ascend or spirally descend in sequence.

[0012] The beneficial effects of the present invention are:

[0013] 1. Under the action of centrifugal force, dust in the airflow will gradually approach the outer side of the channel in the radial direction. The longer the radial length of the channel, the easier it is for dust particles to gather near the inner wall of the outer side of the channel, and the cleaner the airflow near the inner wall of the inner side of the channel. The present invention connects the primary channel and the secondary channel through a two-stage connecting section. Since the radial length a1 on the cross section of the primary channel is smaller than the radial length a2 on the cross section of the secondary channel, the flow channel presents a radial step-by-step expansion. Dust particles in the airflow can gather more easily on the outer inner wall of the secondary channel than when the channel length a1 is maintained unchanged, thereby achieving a higher dust removal efficiency than when the radial length of the channel is maintained unchanged.

[0014] 2. Since the cross-sectional area of ​​the primary channel, the channel cross-sectional area of ​​the two-stage connecting section and the cross-sectional area of ​​the secondary channel are equal, the flow area of ​​the primary channel a1×b1, the flow area of ​​the two-stage connecting section and the flow area of ​​the secondary channel a2×b2 are consistent, so that the overall flow velocity of the airflow in the channel remains unchanged, which can make the airflow flow stable and help reduce energy loss.

[0015] 3. The airflow speed remains unchanged during the movement process, which is conducive to the stability of the airflow, the loss of pressure drop is low, and it is easy to achieve multiple dust removal with very small additional pressure drop loss. It can obtain higher dust removal efficiency under the condition of relatively low pressure drop loss; and it has a simple structure, low manufacturing and maintenance costs, and very little noise pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a radially expanded annular dust removal channel based on the cyclone separation principle.

[0018] Figure 2 It is a top view of a radially expanding annular dust removal channel based on the cyclone separation principle.

[0019] Figure 3 yes Figure 1 C1-C1 section view in.

[0020] Figure 4 yes Figure 2 C2-C2 section view in.

[0021] Figure 5 yes Figure 2 C3-C3 section view in.

[0022] Among them, in the figure:

[0023] 1-air flow inlet, 2-first-stage annular dust removal channel section, 3-two-stage connecting section, 4-second-stage annular dust removal channel section, 5-air flow outlet, 201-first-stage channel, 202-first dust removal port, 203-first-stage dust collecting bucket, 401-secondary channel, 402-second dust removal port, 403-secondary dust collecting bucket. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] See attached Figure 1-5As shown, the present invention provides a radially expanding annular dust removal channel based on the cyclone separation principle, comprising: an air flow inlet 1, a primary annular dust removal channel section 2, a two-stage connecting section 3, a secondary annular dust removal channel section 4 and an air flow outlet 5, the primary annular dust removal channel section 2 comprises a primary channel 201, the secondary annular dust removal channel section 4 comprises a secondary channel 401, the air flow inlet 1, the primary channel 201, the two-stage connecting section 3, the secondary channel 401 and the air flow outlet 5 are connected in sequence, a first dust removal port 202 is arranged on the outer side wall at the end of the primary channel 201, a first dust collecting bucket 203 is arranged on the first dust removal port 202, a second dust removal bucket 203 is arranged on the outer side wall at the end of the secondary channel 401 Dust port 402, a second dust collecting bucket 403 is arranged on the second dust removing port 402, the radial length of the annular dust removing channel on the cross section of the primary channel 201 is a1, and the height is b1; the radial length of the annular dust removing channel on the cross section of the secondary channel 401 is a2, and the height is b2, the cross-sectional area of ​​the primary channel 201 and the channel cross-sectional area of ​​the two-stage connecting section 3 are equal to the cross-sectional area of ​​the secondary channel 401, the flow area a1×b1 of the primary channel 201 and the flow area of ​​the two-stage connecting section 3 are consistent with the flow area a2×b2 of the secondary channel 401, so that the flow velocity of the airflow in the channel is maintained unchanged as a whole, the airflow can be made to flow stably, and it is beneficial to reduce energy loss.

[0026] The dust-laden airflow enters from the airflow inlet 1, and generates centrifugal force when flowing in the primary channel 201. Under the action of the centrifugal force, the dust gradually approaches the inner wall of the outer side of the channel in the radial direction, and the dust content increases as the distance from the rotation center increases in the radial direction. When the dust-laden airflow passes through the first dust removal port 202, dust with large mass and particle size flies into the primary dust collecting barrel 203. After the airflow is purified once, the airflow containing fine dust will continue to flow forward along the two-stage connecting section 3. Figure 3 and 4 The airflow flows to the secondary channel 401 through the two-stage connecting section 3. The fine dust purified through the primary channel 201 is further purified when passing through the second dust removal port 402. The dust flies into the secondary dust collecting barrel 403, and the clean airflow flows out.

[0027] Under the action of centrifugal force, dust in the airflow will gradually approach the outside of the channel in the radial direction. The longer the radial length of the channel, the easier it is for dust particles to gather near the inner wall of the outer side of the channel, and the cleaner the airflow near the inner wall of the inner side of the channel. The present invention connects the primary channel 201 and the secondary channel 401 through a two-stage connecting section 3. Since the radial length a1 on the cross section of the primary channel 201 is smaller than the radial length a2 on the cross section of the secondary channel 401, the flow channel presents a radial step-by-step expansion. Dust particles in the airflow can gather toward the outer inner wall of the secondary channel 401 more easily than when the channel length a1 is maintained unchanged. Therefore, when the airflow passes through the opening on the outer side of the secondary channel 401, the fine dust particles in the airflow are more easily separated, thereby achieving a higher dust removal efficiency than when the radial length of the channel is maintained unchanged.

[0028] A preferred embodiment, a radially expanding annular dust removal channel based on the cyclone separation principle also includes multiple annular dust removal channel sections and multiple connecting sections, the head ends of the multiple annular dust removal channel sections are connected to the end of the secondary annular dust removal channel section 4, the multiple annular dust removal channel sections are connected through multiple connecting sections, and the ends of the multiple annular dust removal channel sections are connected to the airflow outlet 5. That is, the present invention shows a secondary dust removal structure, and it is also possible to achieve a multi-level structure greater than the second level by increasing the number of annular dust removal channel sections and connecting sections.

[0029] In a preferred embodiment, the relationship between the radial length a1 on the cross section of the primary channel 201 and the radial length a2 on the cross section of the secondary channel 401 is: 1.3a1<a2<2a2. In the radial direction between the primary channel 201 and the secondary channel 401, if the expansion is too little, the increase in dust removal efficiency will be limited. If the expansion is too much, it will be detrimental to the stability of the airflow. When the relationship between the radial length a1 on the cross section of the primary channel 201 and the radial length a2 on the cross section of the secondary channel 401 satisfies 1.3a1<a2<2a2, the dust removal efficiency is high.

[0030] In a preferred embodiment, the primary annular dust removal channel segment 2, the secondary annular dust removal channel segment 4 and the multiple annular dust removal channel segments can be located on the same plane, and can also spirally ascend or spirally descend in sequence.

[0031] In a preferred embodiment, the present invention can be used as a separate dust removal device, or can be connected to other dust removal devices at the air flow outlet 5 as a pre-purification for further dust removal.

[0032] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0033] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A radially expanding annular dust removal channel based on the cyclone separation principle, characterized in that: include: An air flow inlet, a primary annular dust removal channel section, a two-stage connecting section, a secondary annular dust removal channel section and an air flow outlet, wherein the primary annular dust removal channel section includes a primary channel, and the secondary annular dust removal channel section includes a secondary channel, the air flow inlet, the primary channel, the two-stage connecting section, the secondary channel and the air flow outlet are sequentially connected, a first dust removal port is provided on the outer side wall at the end of the primary channel, and a second dust removal port is provided on the outer side wall at the end of the secondary channel, the cross-sectional area of ​​the primary channel and the channel cross-sectional area of ​​the two-stage connecting section are equal to the cross-sectional area of ​​the secondary channel, and the radial length a1 of the cross section of the primary channel in the annular dust removal channel is smaller than the radial length a2 of the cross section of the secondary channel; The first dust removal port is provided with a primary dust collecting bucket; The second dust removal port is provided with a secondary dust collecting bucket.

2. The radially expanding annular dust removal channel based on the cyclone separation principle according to claim 1 is characterized in that: It also includes multiple annular dust removal channel sections and multiple connecting sections. The head ends of the multiple annular dust removal channel sections are connected to the end of the secondary annular dust removal channel section, the multiple annular dust removal channel sections are connected through the multiple connecting sections, and the ends of the multiple annular dust removal channel sections are connected to the airflow outlet.

3. The radially expanding annular dust removal channel based on the cyclone separation principle according to claim 1 is characterized in that: The relationship between the radial length a1 of the cross section of the primary channel and the radial length a2 of the cross section of the secondary channel is: 1.3a1<a2<2a2.

4. The radially expanding annular dust removal channel based on the cyclone separation principle according to claim 2 is characterized in that: The primary annular dust removal channel segment, the secondary annular dust removal channel segment and the plurality of annular dust removal channel segments are located on the same plane.

5. The radially expanding annular dust removal channel based on the cyclone separation principle according to claim 2 is characterized in that: The primary annular dust removal channel segment, the secondary annular dust removal channel segment and the plurality of annular dust removal channel segments spirally ascend or spirally descend in sequence.

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