Rich and lean phase separators and burners

Abstract

The present invention discloses a dense-lean phase separator and a burner. The dense-phase flow separator includes a curved pipe, a baffle assembly, and a fan. The curved pipe has an air inlet channel and a solid-gas two-phase flow inlet, a dense-phase flow outlet, and a dilute-phase flow outlet connected to the air inlet channel. The baffle assembly is disposed within the air inlet channel and divides a portion of the air inlet channel into a dense-phase flow channel and a dilute-phase flow channel. The baffle assembly includes a first baffle, a second baffle, and a third baffle. The first and second baffles are adjustably connected to the third baffle along the first direction, and the second baffle is adjustably connected to the first and second baffles along the inner and outer directions. The fan is used to extract gas from or blow gas into the dense-phase flow channel, and a filter membrane is provided between the fan and the first opening. The dense-lean phase separator of the present invention has advantages such as easy adjustment of the total flow rate of the dense-phase flow and the solid-gas ratio.

Description

Technical Field

[0001] The invention relates to the technical field of pulverized coal boiler combustion, and in particular to a dense-lean phase separator and a burner. Background Art

[0002] Pneumatic conveying is a common method of conveying powders in industry. In the field of boiler combustion technology, increasing the concentration of pulverized coal is often beneficial for burner ignition and stable combustion. However, the solid-gas content of the conveying air in traditional power plant boilers is relatively low. Therefore, a dense-lean phase separator is typically used to separate the pulverized coal airflow into dense and dilute phases before entering the burner for combustion, thereby improving burner combustion stability. The basic principle of a dense-lean phase separator is to utilize the centrifugal force generated by pulverized coal at the corners of the pipe, causing the pulverized coal to concentrate on the outside of the elbow to form a dense phase flow, while the pulverized coal forms a dilute phase flow on the inside of the elbow. The dense and dilute phases are separated by partitions within the pipe, forming two-phase flows of high and low concentrations that enter the burner for combustion, thereby improving burner combustion stability.

[0003] In related technologies, when the inlet boundary conditions of the dense-lean phase separator are fixed, the solid-gas ratio and total flow rate of the outlet dense phase flow and dilute phase flow are both constant, and cannot be flexibly and accurately adjusted according to engineering requirements. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] To this end, an embodiment of the present invention provides a dense-lean phase separator that is convenient for adjusting the total flow rate and solid-gas ratio of the dense phase flow.

[0006] An embodiment of the present invention provides a burner with convenient adjustment of the total flow rate and solid-gas ratio of dense phase flow.

[0007] The dense-lean phase separator of the embodiment of the present invention comprises a bend pipe, a baffle assembly and a fan, wherein the bend pipe has an air inlet channel and a solid-gas two-phase flow inlet, a dense phase flow outlet and a dilute phase flow outlet connected to the air inlet channel;

[0008] The baffle assembly is arranged in the air inlet passage and divides a portion of the air inlet passage into a dense phase flow passage and a dilute phase flow passage, the dense phase flow passage is communicated with the dense phase flow outlet, and the dilute phase flow passage is communicated with the dilute phase flow outlet, the baffle assembly includes a first baffle, a second baffle, and a third baffle, the first baffle and the second baffle are arranged on both sides of the third baffle at intervals along a first direction, wherein the first baffle and the second baffle are adjustably connected to the third baffle along the first direction, and the second baffle is adjustably connected to the first baffle and the second baffle along the inward and outward directions to change the flow cross-sectional area of ​​the dense phase flow passage;

[0009] The bent pipe has a first opening connected to the dense phase flow channel, the fan is connected to the first opening, the fan is used to extract gas or blow gas into the dense phase flow channel, a filter membrane is provided between the fan and the first opening, the filter membrane is used to filter powder.

[0010] In some embodiments, the first baffle has a first fixed end and a first free end relative to each other, the first fixed end is located downstream of the first free end, the first fixed end is rotatably connected to the bent pipe, and the first free end can rotate around the first fixed end to adjust the position of the first free end in the first direction.

[0011] In some embodiments, the second baffle has a second fixed end and a second free end relative to each other, the second fixed end is located downstream of the second free end, the second fixed end is rotatably connected to the bent pipe, and the second free end can rotate around the second fixed end to adjust the position of the second free end in the first direction.

[0012] In some embodiments, the third partition has a third fixed end and a third free end relative to each other, the third fixed end is located downstream of the third free end, the third fixed end is rotatably connected to the bent pipe, and the third free end can rotate around the third fixed end to adjust the position of the third free end in the inward and outward directions.

[0013] In some embodiments, at least one of the first partition plate, the second partition plate and the third partition plate is provided with a protrusion, and the protrusion is provided in the dense phase flow channel and adjacent to the inlet end of the dense phase flow channel. The protrusion has an inclined surface, and the inclined surface is gradually inclined outward from the inlet end of the dense phase flow channel to the outlet end of the dense phase flow channel.

[0014] In some embodiments, the concentrated and diluted phase separator of the embodiment of the present invention further includes a first connecting plate, the first connecting plate includes a first plate body and a second plate body connected to each other, the first plate body and the second plate body are arranged in an L-shape, the first partition plate has a first slide groove extending along the inner and outer directions, at least a portion of the first plate body is placed in the first slide groove and can be slidably matched with the first slide groove, the third partition plate has a second slide groove extending along the first direction, at least a portion of the second plate body is placed in the second slide groove and can be slidably matched with the second slide groove.

[0015] In some embodiments, the concentrated and diluted phase separator of the embodiment of the present invention further includes a second connecting plate, the second connecting plate includes a third plate body and a fourth plate body connected to each other, the third plate body and the fourth plate body are arranged in an L-shape, the second partition plate has a third slide groove extending along the inward and outward directions, at least a portion of the third plate body is placed in the third slide groove and can be slidably matched with the third slide groove, the third partition plate also has a fourth slide groove extending along the first direction, at least a portion of the fourth plate body is placed in the fourth slide groove and can be slidably matched with the fourth slide groove.

[0016] In some embodiments, the concentrated-lean phase separator of the present invention further includes a cover having a chamber and a second opening connected to the chamber. The cover is disposed on the first opening, and the fan is connected to the second opening.

[0017] In some embodiments, the concentrated and diluted phase separator of the embodiment of the present invention further includes a blow pipe, which is inserted into the cover body, the inlet end of the blow pipe is used to communicate with the compressed gas, and the outlet end of the blow pipe is placed in the chamber and arranged toward the filter membrane.

[0018] The burner of the embodiment of the present invention includes the rich-lean phase separator described in any one of the above embodiments.

[0019] The dense-lean phase separator of the embodiment of the present invention can adjust the total flow rate and solid-gas ratio of the dense phase flow by setting a position-adjustable baffle assembly and cooperating with a fan to extract or blow air into the dense phase flow channel, so as to perform flexible and precise adjustments according to the specific use requirements of the project.

[0020] Therefore, the dense-lean phase separator of the embodiment of the present invention has the advantages of convenient adjustment of the total flow rate and solid-gas ratio of the dense phase flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional cross-sectional view of a rich-lean phase separator according to an embodiment of the present invention.

[0022] Figure 2 It is a front cross-sectional view of a rich-lean phase separator according to an embodiment of the present invention.

[0023] Figure 3 Schematic diagram of the distribution of dense phase flow and dilute phase flow in a bend pipe of a dense-dilute phase separator according to an embodiment of the present invention.

[0024] Figure 4 It is a connection diagram of the partition assembly of the dense and dilute phase separator according to an embodiment of the present invention.

[0025] Figure 5 It is a connection diagram of another state of the partition assembly of the rich-lean phase separator in an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the connection of the partition assembly of the rich-lean phase separator in another state according to an embodiment of the present invention.

[0027] Figure 7 It is a schematic structural diagram of a partition assembly of a dense-lean phase separator according to an embodiment of the present invention.

[0028] Figure 8 It is a schematic structural diagram of the first connecting plate and the second connecting plate of the rich-lean phase separator according to an embodiment of the present invention.

[0029] Reference numerals:

[0030] A thick and thin phase separator 100;

[0031] Bend 1; air inlet 101; solid-gas two-phase flow inlet 102; dense phase flow outlet 103; dilute phase flow outlet 104;

[0032] Partition assembly 2; first partition 201; first fixed end 2011; first free end 2012; first slide 2013; second partition 202; second fixed end 2021; second free end 2022; second slide 2023; third partition 203; third fixed end 2031; third free end 2032; protrusion 2033; inclined surface 20331; third slide 2034;

[0033] Dense phase flow channel 3;

[0034] Dilute phase flow channel 4;

[0035] Filter membrane 6;

[0036] First connecting plate 7; first plate body 701; second plate body 702;

[0037] Second connecting plate 8; third plate 801; fourth plate 802;

[0038] Cover body 9; chamber 901; second opening 902;

[0039] Blowing pipe 10. DETAILED DESCRIPTION

[0040] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0041] The technical solution of the present application is described in detail below with reference to the accompanying drawings.

[0042] like Figures 1 to 8As shown, a dense-lean phase separator 100 according to an embodiment of the present invention includes an elbow 1, a baffle assembly 2, and a blower (not shown). The elbow 1 has an air inlet channel 101, and a solid-gas two-phase flow inlet 102, a dense phase flow outlet 103, and a dilute phase flow outlet 104, all of which are connected to the air inlet channel 101. The baffle assembly 2 is disposed within the air inlet channel 101 and divides a portion of the air inlet channel 101 into a dense phase flow channel 3 and a dilute phase flow channel 4. The dense phase flow channel 3 is connected to the dense phase flow outlet 103, and the dilute phase flow channel 4 is connected to the dilute phase flow outlet 104.

[0043] The partition assembly 2 includes a first partition 201, a second partition 202 and a third partition 203. The first partition 201 and the second partition 202 are arranged on both sides of the third partition 203 along the first direction, wherein the first partition 201 and the second partition 202 are connected to the third partition 203 in an adjustable position along the first direction, and the second partition 202 is connected to the first partition 201 and the second partition 202 in an adjustable position along the inner and outer directions to change the flow cross-sectional area of ​​the dense phase flow channel 3.

[0044] The bent pipe 1 has a first opening connected to the dense phase flow channel 3, and the fan is connected to the first opening. The fan is used to extract gas or blow gas into the dense phase flow channel 3. A filter membrane 6 is provided between the fan and the first opening. The filter membrane 6 is used to filter powder. The filter membrane can be made of materials such as metal sintered mesh, ceramic fiber, and polytetrafluoroethylene coated filter material.

[0045] In order to more clearly describe the technical solution of the present application, the technical solution of the present application is described in detail below with the first direction being consistent with the left and right directions, wherein the left and right directions are as follows: Figures 4 to 8 shown.

[0046] like Figures 1 to 8 As shown, the first and second baffles 201, 202 are disposed on either side of the third baffle 203 in the left-right direction. Both the first and second baffles 201, 202 extend in the inward-outward direction, while the third baffle 203 extends in the left-right direction. The first baffle 201 is adjustably connected to the third baffle 203 in the left-right direction, while the second baffle 202 is adjustably connected to the third baffle 203 in the left-right direction. The third baffle 203 is adjustably connected to the first and second baffles 201, 202 in the inward-outward direction. The elbow 1 has an inner sidewall and an outer sidewall disposed opposite each other in the inward-outward direction. A dense-phase flow channel 3 is defined between the first baffle 201, the second baffle 202, the third baffle 203, and the outer sidewall.

[0047] It will be understood by those skilled in the art that Figure 3As shown, after the primary air carrying coal powder enters the air inlet channel 101 of the elbow 1 from the solid-gas two-phase flow inlet 102, a centrifugal effect occurs at the corner of the elbow 1, making the outer side of the air inlet channel 101 a dense phase flow and the inner side of the air inlet channel 101 a dilute phase flow.

[0048] During use, the dense-lean phase separator 100 of the embodiment of the present invention can be divided into the following three situations to adjust the solid-gas ratio and total flow rate of the dense phase flow in the dense phase flow channel 3 while maintaining the boundary conditions of the solid-gas two-phase flow inlet 102 unchanged:

[0049] Case 1: When the total flow rate of dense phase flow needs to be increased:

[0050] To maintain a constant solid-gas ratio in the dense-phase flow, the position of first baffle 201 should be adjusted leftward and the position of second baffle 202 rightward to increase the cross-sectional area of ​​dense-phase flow channel 3, thereby increasing the total flow rate of the dense-phase flow. Because the solid-gas ratio of the dense-phase flow remains the same in the left and right directions, adjusting the positions of first baffle 201 and second baffle 202 in these directions does not change the solid-gas ratio of the dense-phase flow.

[0051] To lower the solid-gas ratio of the dense phase flow, the position of the third baffle 203 is adjusted inward to increase the cross-sectional flow area of ​​the dense phase flow channel 3, thereby increasing the total flow rate of the dense phase flow. Because the airflow concentration inside the inlet channel 101 is lower than that outside, adjusting the third baffle 203 downward to increase the cross-sectional flow area of ​​the inlet channel 101 allows the lower-concentration airflow to enter the dense phase flow channel 3, thereby reducing the solid-gas ratio of the dense phase flow within the dense phase flow channel 3.

[0052] If the solid-gas ratio of the dense phase flow is to be increased, the position of the first baffle 201 should be adjusted to the left and the position of the second baffle 202 should be adjusted to the right, while controlling the fan to extract the gas in the dense phase flow channel 3 outward. Since the powder is filtered by the filter membrane 6, the fan can only extract the gas, thereby increasing the solid-gas ratio of the dense phase flow in the dense phase flow channel 3.

[0053] The second case: when the total flow rate of dense phase flow needs to be reduced:

[0054] To maintain a constant solid-gas ratio in the dense-phase flow, the position of first baffle 201 should be adjusted rightward and the position of second baffle 202 leftward to reduce the cross-sectional area of ​​dense-phase flow channel 3, thereby reducing the total flow rate of the dense-phase flow. Because the solid-gas ratio of the dense-phase flow is the same in the left and right directions, adjusting the positions of first baffle 201 and second baffle 202 in these directions does not change the solid-gas ratio of the dense-phase flow.

[0055] To increase the solid-to-gas ratio of the dense phase flow, the position of the third baffle 203 is adjusted outward to reduce the cross-sectional area of ​​the dense phase flow channel 3, thereby reducing the total flow rate of the dense phase flow. Because the airflow concentration outside the inlet channel 101 is greater than that inside, adjusting the third baffle 203 outward to reduce the cross-sectional area of ​​the inlet channel 101 prevents the lower-concentration airflow from entering the dense phase flow channel 3, thereby increasing the solid-to-gas ratio within the dense phase flow channel 3.

[0056] If the solid-gas ratio of the dense phase flow is to be lowered, the position of the first baffle 201 should be adjusted to the right and the position of the second baffle 202 should be adjusted to the left, while controlling the blower to blow gas into the dense phase flow channel 3, thereby reducing the solid-gas ratio of the dense phase flow in the dense phase flow channel 3.

[0057] The third case: when the total flow rate of dense phase flow needs to be kept constant:

[0058] If the solid-gas ratio of the dense phase flow is to be increased, the fan is controlled to extract the gas in the dense phase flow channel 3 outward. At the same time, in order to compensate for the amount of gas extracted to ensure that the total flow rate remains unchanged, the position of the first partition 201 should be adjusted to the left and the position of the second partition 202 should be adjusted to the right to increase the flow cross-sectional area of ​​the dense phase flow channel 3.

[0059] If the solid-gas ratio of the dense phase flow is to be lowered, the fan is controlled to blow air into the dense phase flow channel 3. At the same time, in order to ensure that the total flow rate remains unchanged, the position of the first partition 201 should be adjusted to the right and the position of the second partition 202 should be adjusted to the left to reduce the flow cross-sectional area of ​​the dense phase flow channel 3.

[0060] Therefore, the dense-lean phase separator 100 of the embodiment of the present invention can adjust the total flow rate and solid-gas ratio of the dense phase flow by setting a position-adjustable partition assembly 2 and cooperating with a fan to extract or blow air into the dense phase flow channel 3, so as to perform flexible and precise adjustments according to the specific use requirements of the project.

[0061] Therefore, the dense-lean phase separator 100 of the embodiment of the present invention has the advantages of convenient adjustment of the total flow rate and solid-gas ratio of the dense phase flow.

[0062] In some embodiments, the first partition 201 has a first fixed end 2011 and a first free end 2012 relative to each other, the first fixed end 2011 is located downstream of the first free end 2012, the first fixed end 2011 is rotatably connected to the bent pipe 1, and the first free end 2012 can rotate around the first fixed end 2011 to adjust the position of the first free end 2012 in the first direction.

[0063] For example, Figure 5 and Figure 7As shown, the first fixed end 2011 is rotatably connected to the outer wall of the elbow 1 via a first rotating shaft arranged along the inward and outward directions, and the first free end 2012 is rotatable along the left and right directions to change the flow cross-sectional area of ​​the dense phase flow channel 3, thereby making it easy to adjust the flow cross-sectional area of ​​the dense phase flow channel 3.

[0064] In some embodiments, the second partition 202 has a second fixed end 2021 and a second free end 2022 relative to each other, the second fixed end 2021 is located downstream of the second free end 2022, the second fixed end 2021 is rotatably connected to the bent pipe 1, and the second free end 2022 can rotate around the second fixed end 2021 to adjust the position of the second free end 2022 in the first direction.

[0065] For example, Figure 5 and Figure 7 As shown, the second fixed end 2021 is rotatably connected to the outer wall of the elbow 1 through a second rotating shaft arranged along the inward and outward directions, and the second free end 2022 is rotatable along the left and right directions to change the flow cross-sectional area in the dense phase flow channel 3, thereby making it easy to adjust the flow cross-sectional area in the dense phase flow channel 3.

[0066] In some embodiments, the third partition 203 has a relative third fixed end 2031 and a third free end 2032, the third fixed end 2031 is located downstream of the third free end 2032, the third fixed end 2031 is rotatably connected to the bent pipe 1, and the third free end 2032 can rotate around the third fixed end 2031 to adjust the position of the third free end 2032 in the inward and outward directions.

[0067] For example, Figure 6 and Figure 7 As shown, the third fixed end 2031 is rotatably connected to the outer wall of the elbow 1 via a third rotating shaft arranged along the left-right direction, and the third free end 2032 is rotatable along the inside-outside direction to change the flow cross-sectional area in the dense phase flow channel 3, thereby making it easy to adjust the flow cross-sectional area in the dense phase flow channel 3.

[0068] In some embodiments, at least one of the first partition plate 201, the second partition plate 202 and the third partition plate 203 has a protrusion 2033, the protrusion 2033 is arranged in the dense phase flow channel 3 and is arranged adjacent to the inlet end of the dense phase flow channel 3, and the protrusion 2033 has an inclined surface 20331, and the inclined surface is gradually inclined outward from the inlet end of the dense phase flow channel 3 to the outlet end of the dense phase flow channel 3.

[0069] At least one of the first partition 201, the second partition 202 and the third partition 203 has a protrusion 2033. It can be understood that the protrusion 2033 is set on one of the first partition 201, the second partition 202 and the third partition 203, or the protrusion 2033 is set on two of the first partition 201, the second partition 202 and the third partition 203, or the protrusion 2033 is set on three of the first partition 201, the second partition 202 and the third partition 203.

[0070] For example, Figure 6 and Figure 7 As shown, when the elbow 1 is installed, if the inner and outer directions of the elbow 1 are the same as the direction of gravity, only the protrusion 2033 can be provided on the third partition plate 203. Through the inclined surface 20331 on the protrusion 2033, when the airflow enters the dense phase flow channel 3, the airflow can fly upward along the inclined surface 20331 to prevent the powder from accumulating on the surface of the third partition plate 203 due to gravity.

[0071] When the elbow 1 is installed, if the first direction is the same as the direction of gravity, the protrusion 2033 can be set only on the first partition 201 or the second partition 202, and the air flow can fly upward along the inclined surface 20331 to prevent the powder from accumulating on the upper surface of the first partition 201 or the second partition 202 due to gravity.

[0072] Of course, the protrusions 2033 may also be provided on the first separator 201 , the second separator 202 and the third separator 203 to prevent powder from accumulating on the first separator 201 , the second separator 202 and the third separator 203 .

[0073] In some embodiments, the concentrated and diluted phase separator 100 of the embodiment of the present invention further includes a first connecting plate 7, the first connecting plate 7 includes a first plate body 701 and a second plate body 702 connected to each other, the first plate body 701 and the second plate body 702 are arranged in an L-shape, the first partition plate 201 has a first slide groove 2013 extending along the inward and outward directions, at least a portion of the first plate body 701 is placed in the first slide groove 2013 and can be slidably matched with the first slide groove 2013, the third partition plate 203 has a second slide groove 2023 extending along the first direction, at least a portion of the second plate body 702 is placed in the second slide groove 2023 and can be slidably matched with the second slide groove 2023.

[0074] For example, Figures 4 to 8As shown, the first plate 701 extends inward and outward, and the second plate 702 extends in the left-right direction. The first plate 701 is inserted into the first chute 2013 in the inward and outward direction, and the second plate 702 is inserted into the second chute 2023 in the left-right direction. When the position of the first baffle 201 needs to be adjusted in the left-right direction, the second plate 702 slides relative to the second chute 2023 to maintain the dense phase flow channel 3 as a complete channel. This makes the baffle assembly 2 simple in structure and easy to adjust.

[0075] In some embodiments, the concentrated and diluted phase separator 100 of the embodiment of the present invention further includes a second connecting plate 8, the second connecting plate 8 includes a third plate body 801 and a fourth plate body 802 connected to each other, the third plate body 801 and the fourth plate body 802 are arranged in an L shape, the second partition plate 202 has a third slide groove 2034 extending in the inward and outward directions, at least a portion of the third plate body 801 is placed in the third slide groove 2034 and can be slidably matched with the third slide groove 2034, the third partition plate 203 also has a fourth slide groove extending in the first direction, at least a portion of the fourth plate body 802 is placed in the fourth slide groove and can be slidably matched with the fourth slide groove.

[0076] For example, Figures 4 to 8 As shown, the third plate 801 extends in the inward and outward direction, and the fourth plate 802 extends in the left-right direction. The third plate 801 is inserted into the third chute 2034 in the inward and outward direction, and the fourth plate 802 is inserted into the fourth chute in the left-right direction. When the position of the second baffle 202 needs to be adjusted in the left-right direction, the fourth plate 802 slides relative to the fourth chute to maintain the dense phase flow channel 3 as a complete channel, making the baffle assembly 2 simple in structure and easy to adjust.

[0077] In some embodiments, the rich-lean phase separator 100 of the present invention further includes a cover 9 having a chamber 901 and a second opening 902 communicating with the chamber 901 . The cover 9 is disposed on the first opening, and the fan is communicated with the second opening 902 .

[0078] For example, Figure 1 and Figure 2 As shown, by setting the cover body 9, when the fan blows gas into or extracts gas from the dense phase flow channel 3, a transition can be made through the chamber 901 of the cover body 9, so that the first opening can be set larger, making it convenient for the fan to efficiently extract gas or blow gas into the dense phase flow channel 3.

[0079] In some embodiments, the concentrated and diluted phase separator 100 of the embodiment of the present invention also includes a blow pipe 10, which is inserted into the cover body 9, and the inlet end of the blow pipe 10 is used to communicate with the compressed gas, and the outlet end of the blow pipe 10 is placed in the chamber 901 and is arranged toward the filter membrane 6.

[0080] For example, Figure 1 and Figure 2 As shown, the inlet end of the blowing pipe 10 is connected to the compressed air through the solenoid valve. When the fan draws out the gas in the dense phase flow channel 3, the solenoid valve can be started intermittently to allow the compressed air to be sprayed toward the filter membrane 6 through the outlet end of the blowing pipe 10 to prevent the powder in the dense phase flow channel 3 from clogging the filter membrane 6, which is beneficial to improving the working reliability of the dense and dilute phase separator 100 of the embodiment of the present invention.

[0081] The burner of the embodiment of the present invention includes the rich-lean phase separator 100 described in any one of the above embodiments.

[0082] Therefore, the burner of the embodiment of the present invention has the advantages of convenient adjustment of the total flow rate and solid-gas ratio of the dense phase flow.

[0083] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0084] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0085] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0086] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0087] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0088] Although the above embodiments have been shown and described, it is understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. Changes, modifications, substitutions and variations of the above embodiments by those skilled in the art are all within the scope of protection of the present invention.

Claims

1. A dense and dilute phase separator, characterized in that: include: An elbow (1), the elbow (1) having an air inlet channel (101) and a solid-gas two-phase flow inlet (102), a dense phase flow outlet (103) and a dilute phase flow outlet (104) communicating with the air inlet channel (101); and A partition assembly (2), wherein the partition assembly (2) is arranged in the air inlet channel (101) and divides a portion of the air inlet channel (101) into a dense phase flow channel (3) and a dilute phase flow channel (4), wherein the dense phase flow channel (3) is communicated with the dense phase flow outlet (103), and the dilute phase flow channel (4) is communicated with the dilute phase flow outlet (104), and the partition assembly (2) comprises a first partition (201), a second partition (202) and a third partition (203), wherein the first partition (201) is connected to the second partition (202) and the third partition (203), wherein the second partition (202) is connected to the third partition (203), wherein the first partition (201) is connected to the second partition (202) and ... A partition (201) and a second partition (202) are arranged at intervals on both sides of the third partition (203) along a first direction, wherein the first partition (201) and the second partition (202) are connected to the third partition (203) in an adjustable manner along the first direction, and the second partition (202) is connected to the first partition (201) and the second partition (202) in an adjustable manner along the inner and outer directions, so as to change the flow cross-sectional area of ​​the dense phase flow channel (3); and A fan, wherein the bent pipe (1) has a first opening connected to the dense phase flow channel (3), the fan is connected to the first opening, the fan is used to extract gas from or blow gas into the dense phase flow channel (3), a filter membrane (6) is provided between the fan and the first opening, and the filter membrane (6) is used to filter powder.

2. The rich-lean phase separator according to claim 1, characterized in that: The first baffle (201) has a first fixed end (2011) and a first free end (2012) relative to each other, the first fixed end (2011) is located downstream of the first free end (2012), the first fixed end (2011) is rotatably connected to the curved pipe (1), and the first free end (2012) can rotate around the first fixed end (2011) to adjust the position of the first free end (2012) in the first direction.

3. The rich-lean phase separator according to claim 1, characterized in that: The second baffle (202) has a second fixed end (2021) and a second free end (2022) opposite to each other, the second fixed end (2021) is located downstream of the second free end (2022), the second fixed end (2021) is rotatably connected to the curved pipe (1), and the second free end (2022) can rotate around the second fixed end (2021) to adjust the position of the second free end (2022) in the first direction.

4. The rich-lean phase separator according to claim 1, characterized in that: The third partition (203) has a third fixed end (2031) and a third free end (2032) relative to each other, the third fixed end (2031) is located downstream of the third free end (2032), the third fixed end (2031) is rotatably connected to the curved pipe (1), and the third free end (2032) can rotate around the third fixed end (2031) to adjust the position of the third free end (2032) in the inward and outward directions.

5. The rich-lean phase separator according to claim 4, characterized in that: A protrusion (2033) is provided on at least one of the first partition plate (201), the second partition plate (202) and the third partition plate (203), and the protrusion (2033) is arranged in the dense phase flow channel (3) and adjacent to the inlet end of the dense phase flow channel (3). The protrusion (2033) has an inclined surface (20331), and the inclined surface (20331) is gradually inclined outward from the inlet end of the dense phase flow channel (3) to the outlet end of the dense phase flow channel (3).

6. The rich-lean phase separator according to claim 1, characterized in that: The invention also includes a first connecting plate (7), wherein the first connecting plate (7) includes a first plate body (701) and a second plate body (702) connected to each other, wherein the first plate body (701) and the second plate body (702) are arranged in an L shape, and the first partition plate (201) has a first slide groove (2013) extending along the inner and outer directions, and at least a portion of the first plate body (701) is placed in the first slide groove (2013) and can be slidably matched with the first slide groove (2013), and the third partition plate (203) has a second slide groove (2023) extending along the first direction, and at least a portion of the second plate body (702) is placed in the second slide groove (2023) and can be slidably matched with the second slide groove (2023).

7. The rich-lean phase separator according to claim 1, characterized in that: The utility model further comprises a second connecting plate (8), wherein the second connecting plate (8) comprises a third plate body (801) and a fourth plate body (802) connected to each other, wherein the third plate body (801) and the fourth plate body (802) are arranged in an L shape, and the second partition plate (202) has a third slide groove (2034) extending in the inner and outer directions, and at least a portion of the third plate body (801) is placed in the third slide groove (2034) and can be slidably matched with the third slide groove (2034), and the third partition plate (203) also has a fourth slide groove extending in the first direction, and at least a portion of the fourth plate body (802) is placed in the fourth slide groove and can be slidably matched with the fourth slide groove.

8. The rich-lean phase separator according to claim 1, characterized in that: The invention also includes a cover body (9), wherein the cover body (9) has a chamber (901) and a second opening (902) communicating with the chamber (901), the cover body (9) is arranged on the first opening, and the fan is communicated with the second opening (902).

9. The rich-lean phase separator according to claim 8, characterized in that: It also includes a blow pipe (10), which is inserted into the cover body (9), the inlet end of the blow pipe (10) is used to communicate with the compressed gas, and the outlet end of the blow pipe (10) is placed in the chamber (901) and arranged toward the filter membrane (6).

10. A burner, characterized in that: The invention comprises the rich and dilute phase separator according to any one of claims 1 to 9.

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