Flow guide device for flue
The automatic cleaning of the flue gas guide plate by rotating the pointer and lifting device solves the problems of low cleaning efficiency and environmental pollution caused by dust accumulation on the guide plate, and improves the uniformity of flue gas flow and heat exchange efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-21
- Publication Date
- 2026-03-24
AI Technical Summary
Existing flue baffles accumulate dust after prolonged use, resulting in low cleaning efficiency, high labor intensity, and incomplete cleaning, making it difficult to achieve comprehensive cleaning.
Design a flow guiding device that uses a rotating pointer to drive the flow guiding plates to form a plane, and uses a lifting device and a cleaning plate to achieve automated cleaning, collecting dust into a temporary storage bin to avoid environmental pollution.
It achieves efficient cleaning of the baffle plate, reduces labor intensity, improves flue gas flow uniformity and heat exchange efficiency, and avoids dust pollution.
Smart Images
Figure CN224033838U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of flue flow guide, specifically a flow guide device for flue. BACKGROUND
[0002] When the boiler tail flue gas enters the main flue where the heat exchanger is located through the variable diameter flue, because the cross-sectional area of the variable diameter flue through by the flue gas is from small to large, the flue gas will produce backflow, vortex and flow dead zone, which leads to uneven distribution of the flue gas speed and fly ash concentration in the heat exchanger, and causes uneven heating of the heat exchanger, resulting in insufficient utilization of the heat exchange surface.
[0003] In order to solve this problem, a flue gas flow guide plate is usually arranged in the variable diameter flue to optimize the flow characteristics of the flue gas flow. However, the surface of the flow guide plate will accumulate dust and fly ash after long-term use, affecting the flow guide effect, so it needs to be cleaned regularly.
[0004] The existing cleaning method is usually manual cleaning, which not only has low cleaning efficiency and high labor intensity, but also is not thorough. In addition, because the number of flow guide plates is large and widely distributed, it is difficult to clean them one by one, and it is difficult to achieve comprehensive cleaning of all flow guide plates. UTILITY MODEL CONTENTS
[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and to provide a flow guide device for flue, by rotating all the pointers to drive all the flow guide plates to form a plane, under the working of the lifting device, the cleaning plate drives the surface of the flow guide plate to be cleaned, when one side is cleaned, by rotating all the pointers by 180°, the other side of all the flow guide plates can be cleaned at the same time.
[0006] To achieve the above purpose, the utility model provides the following technical scheme:
[0007] A flow guide device for flue, comprising a variable diameter flue, one end of the variable diameter flue with a large cross-sectional area is an air outlet end, one end of the variable diameter flue with a small cross-sectional area is an air inlet end, a plurality of flow guide plates are arranged inside the variable diameter flue, a rotating shaft is arranged in the middle of the flow guide plate, the flow guide plate is installed in the variable diameter flue through the rotating shaft, one end of the rotating shaft penetrates one side of the variable diameter flue, a pointer is arranged at the end of the rotating shaft penetrating the variable diameter flue, a scale matched with the pointer is arranged on the side of the variable diameter flue, a placing groove is arranged at the top of the variable diameter flue, a cleaning plate is arranged in the placing groove, a lifting device driving the cleaning plate is arranged at the top of the variable diameter flue, and a temporary storage bin is arranged at the bottom of the variable diameter flue.
[0008] Preferably, the lifting device comprises a motor, the motor is arranged at the top of the variable-diameter flue, a threaded rod is arranged at the power output end of the motor, a connecting plate is threadedly arranged on the threaded rod, and the two ends of the connecting plate are connected with the cleaning plate through driving rods penetrating the top of the variable-diameter flue.
[0009] Preferably, the width of the cleaning plate along the direction of the flue gas flow is the same as the spacing between adjacent guide plates, and the guide plates are made of stainless steel.
[0010] Preferably, the cleaning plate is arranged above the guide plate, a blowdown port is arranged below the guide plate of the variable-diameter flue, and a temporary storage bin is arranged at the blowdown port.
[0011] Preferably, a first limiting groove is arranged at the blowdown port of the variable-diameter flue, a first limiting block matched with the first limiting groove is arranged on the temporary storage bin, a second limiting groove is arranged inside the opening at the top of the temporary storage bin, a sealing plate is arranged at the opening of the temporary storage bin, and second limiting blocks matched with the second limiting groove are arranged on the opposite sides of the sealing plate.
[0012] Preferably, the sealing plate and the cleaning plate are made of stainless steel, and the side of the cleaning plate abutting against the guide plate is provided with brush hairs made of stainless steel.
[0013] Preferably, the end of the rotating shaft penetrating the variable-diameter flue is threadedly arranged with a limiting nut.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] 1、The utility model discloses simple structure, through respectively controlling the pointer of each rotating shaft end, according to the cooperation of each pointer and corresponding scale, can ensure the angle of each guide plate, when high-temperature flue gas flows through the variable-diameter flue, can change the flow direction and speed of high-temperature flue gas through the guide plate, thereby optimizing the distribution of airflow in the flue, making it more uniform into the main pipeline where the heat exchanger is located, more uniformly flows through the heat exchange surface of the heat exchanger, and improves the heat exchange efficiency.
[0016] 2、The device rotates each pointer respectively, drives the rotation of the guide plate on the rotating shaft, and ensures that each pointer is vertically pointed downward, so that all the corresponding guide plates can form a plane, and then the cleaning plate in the placing groove is driven downward by the lifting device, the cleaning plate abuts against the plane formed by all the guide plates, and all the dust accumulated on one side of each guide plate is completely cleaned. After cleaning the dust on one side, the pointers are rotated by 180 degrees, so that all the pointers are vertically pointed upward, and then the cleaning plate is driven downward by the lifting device again to clean the dust accumulated on the other side of the guide plate. The cleaned dust falls into the temporary storage bin at the bottom of the variable flue, and the temporary storage bin is slidingly installed at the bottom of the variable flue, so that the temporary storage bin can be taken out after cleaning the dust, the dust in the temporary storage bin is uniformly cleaned, and the working environment of the staff is not polluted.
[0017] 3、The first limiting block on the two sides of the temporary storage bin can cooperate with the first limiting groove at the pollution outlet of the variable flue, so that the temporary storage bin can be slidingly installed at the bottom of the variable flue. The second limiting groove is arranged at the opening of the temporary storage bin, and the sealing plate is installed at the opening of the temporary storage bin through cooperation of the second limiting block and the second limiting groove. When the high-temperature flue gas flows through the variable flue, the opening of the temporary storage bin is sealed by the sealing plate, so as to avoid affecting the flow direction and flow rate of the high-temperature flue gas. When the dust and impurities are cleaned, the opening of the temporary storage bin is first opened, so that the cleaned dust falls into the temporary storage bin, and then the opening of the temporary storage bin is resealed. Then, the temporary storage bin is taken out from the bottom of the variable flue through cooperation of the first limiting block and the first limiting groove, and the dust in the temporary storage bin is cleaned, so as to avoid polluting the working environment of the staff.
[0018] 4、The brush is arranged on the guide plate, so that the guide plate can be cleaned. When the rotation angle of the guide plate does not reach the rotation angle of the other guide plates, one side of the guide plate protrudes from the plane formed by all the guide plates, and the cleaning plate is directly cleaned, which has the risk of being stuck. The brush made of stainless steel material with certain toughness can effectively clean all the guide plates.
[0019] 5、The limiting nut is arranged on the end of the rotating shaft penetrating the variable flue through threads, so that the guide plate can be rotated to the required angle, the limiting nut is moved to the variable flue, and the rotating angle of the corresponding guide plate is fixed until the limiting nut abuts against the outer wall of the variable flue, so as to ensure the stability of the guide plate during work. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 The overall structure of the utility model is shownFigure 1 ;
[0021] Figure 2 The overall structure of the present application is shown in Figure 2 ;
[0022] Figure 3 The present application is shown in cross-section when the guide plate is in operation.
[0023] Figure 4 The present application is shown in cross-section when the guide plate is being cleaned.
[0024] Figure 5 The present application is shown in cross-section when the guide plate is in operation. Figure 1 The local structure of the present application is shown in enlarged view.
[0025] In the figure: 1, variable diameter flue; 2, air inlet end; 3, air outlet end; 4, guide plate; 5, rotating shaft; 6, scale; 7, pointer; 8, limiting nut; 9, cleaning plate; 10, placement groove; 11, motor; 12, threaded rod; 13, connecting plate; 14, drive rod; 15, pollution discharge port; 16, first limiting groove; 17, first limiting block; 18, temporary storage bin; 19, second limiting groove; 20, second limiting block; 21, blocking plate. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.
[0027] Embodiment one
[0028] A guide device for a flue, as shown in Figures 1-5 , comprising a variable diameter flue 1, one end of the variable diameter flue 1 with a large cross-sectional area being an air outlet end 3, one end of the variable diameter flue 1 with a small cross-sectional area being an air inlet end 2, a plurality of guide plates 4 being provided inside the variable diameter flue 1, a rotating shaft 5 being provided in the middle of the guide plate 4, the guide plate 4 being installed inside the variable diameter flue 1 through the rotating shaft 5, one end of the rotating shaft 5 penetrating through one side of the variable diameter flue 1, the end of the rotating shaft 5 penetrating through the variable diameter flue 1 being provided with a pointer 7, the side of the variable diameter flue 1 being provided with a scale 6 adapted to the pointer 7, a placement groove 10 being provided at the top inside the variable diameter flue 1, a cleaning plate 9 being provided inside the placement groove 10, a lifting device being provided at the top of the variable diameter flue 1 to drive the cleaning plate 9, and a temporary storage bin 18 being provided at the bottom of the variable diameter flue 1.
[0029] When the high-temperature flue gas enters the variable-diameter flue 1, in order to optimize the flow direction and speed of the high-temperature flue gas in the variable-diameter flue 1, by controlling the pointers 7 at the ends of each rotating shaft 5 respectively, according to the cooperation of each pointer 7 with the corresponding scale 6, the angle of each guide plate 4 can be ensured to be controlled, so that the flow direction and speed of the high-temperature flue gas can be changed by the guide plate 4 when the high-temperature flue gas flows through the variable-diameter flue 1, thereby optimizing the distribution of the airflow in the flue, making it more uniform into the main pipe where the heat exchanger is located, and flowing more uniformly through the heat exchange surface of the heat exchanger, thereby improving the heat exchange efficiency.
[0030] When the guide plates 4 in the variable-diameter flue 1 need to be cleaned after a long period of use, during the period when the boiler is stopped running, by rotating each pointer 7 respectively, the guide plates 4 on the rotating shaft 5 are rotated. Since the direction indicated by each pointer 7 is the same as the width direction of the corresponding guide plate 4, when each pointer 7 is vertically pointed downward, all the corresponding guide plates 4 can form a plane. Then, when the cleaning plate 9 in the placement groove 10 is moved downward by the lifting device, the cleaning plate 9 abuts against the plane formed by all the guide plates 4, and the dust accumulated on the same side of all the guide plates 4 is completely cleaned. After cleaning the dust on the same side, by rotating the pointers 7 by 180°, all the pointers 7 are vertically pointed upward at the same time. Then, by moving the cleaning plate 9 downward again by the lifting device, the dust accumulated on the other side of the guide plates 4 is cleaned. The cleaned dust falls into the temporary storage bin 18 at the bottom of the variable-diameter flue 1. The temporary storage bin 18 is slidingly installed at the bottom of the variable-diameter flue 1, so that after cleaning the dust, the temporary storage bin 18 can be taken out for unified cleaning of the dust inside, avoiding the dust from contacting the outside and polluting the working environment of the workers.
[0031] The lifting device comprises a motor 11, which is arranged at the top of the variable-diameter flue 1. A threaded rod 12 is arranged at the power output end of the motor 11. A connecting plate 13 is threadedly installed on the threaded rod 12. The two ends of the connecting plate 13 are connected with the cleaning plate 9 through drive rods 14 penetrating through the top of the variable-diameter flue 1.
[0032] The motor 11 can drive the threaded rod 12 to rotate forward and reverse respectively. The connecting plate 13 on the threaded rod 12 is connected with the threaded rod 12 through threads, and the two ends of the connecting plate 13 are connected with the cleaning plate 9 inside the placing groove 10 through the driving rod 14 penetrating the top of the variable-diameter flue 1. When the motor 11 drives the threaded rod 12 to rotate forward, the connecting plate 13 rotates towards the motor 11, and the cleaning plate 9 is driven by the driving rod 14 to clean the guide plate 4. When the motor 11 drives the threaded rod 12 to rotate reversely, the connecting plate 13 moves away from the motor 11, and the cleaning plate 9 is driven by the driving rod 14 to move into the placing groove 10, so that all the guide plates 4 can be cleaned quickly, reducing the labor intensity of the operator.
[0033] The width of the cleaning plate 9 along the direction of the flue gas flow is the same as the spacing between the adjacent guide plates 4, and the guide plate 4 is made of stainless steel.
[0034] As shown in Figure 4 The rotation of the pointer 7 drives all the guide plates 4 to form a plane through the rotating shaft 5, so that the cleaning plate 9 can clean all the guide plates 4 when moving up and down, improving the cleaning efficiency of the guide plates 4 and reducing the labor intensity of the operator. The guide plate 4 made of stainless steel not only has excellent corrosion resistance and high temperature resistance, but also has high strength, which can withstand the impact of impurities in high temperature flue gas on the guide plate 4 when the high temperature flue gas flows through the guide plate 4.
[0035] The cleaning plate 9 is arranged above the guide plate 4, the variable-diameter flue 1 below the guide plate 4 is provided with a blowdown port 15, and the blowdown port 15 is provided with a temporary storage bin 18.
[0036] When all the guide plates 4 rotate to the same plane, the cleaning plate 9 can clean all the guide plates 4 uniformly, and the dust and impurities cleaned can enter the temporary storage bin 18 smoothly, which is convenient for subsequent cleaning of the pollutants in the temporary storage bin 18.
[0037] The blowdown port 15 of the variable-diameter flue 1 is provided with a first limiting groove 16, the temporary storage bin 18 is provided with a first limiting block 17 matched with the first limiting groove 16, the opening of the top of the temporary storage bin 18 is provided with a second limiting groove 19, the opening of the temporary storage bin 18 is provided with a sealing plate 21, and the opposite sides of the sealing plate 21 are provided with second limiting blocks 20 matched with the second limiting groove 19.
[0038] The temporary storage bin 18 can be matched with the first limiting groove 16 at the pollution outlet 15 of the variable flue 1 through the first limiting blocks 17 arranged on both sides, so as to ensure that the temporary storage bin 18 can be slidably installed at the bottom of the variable flue 1. Since the second limiting groove 19 is arranged at the opening of the temporary storage bin 18, and the blocking plate 21 is installed at the opening of the temporary storage bin 18 through the cooperation of the second limiting block 20 and the second limiting groove 19, when the high-temperature flue gas flows through the variable flue 1, the opening of the temporary storage bin 18 is blocked by the blocking plate 21, so as to avoid affecting the flow direction and flow rate of the high-temperature flue gas. When the dust impurities are cleaned, the opening of the temporary storage bin 18 is first opened by the blocking plate 21, so as to ensure that the cleaned dust falls into the temporary storage bin 18, and then the opening of the temporary storage bin 18 is blocked by the blocking plate 21 again. Then, the temporary storage bin 18 is taken out from the bottom of the variable flue 1 through the cooperation of the first limiting block 17 and the first limiting groove 16, so as to clean the dust in the temporary storage bin 18 and avoid polluting the working environment of the external workers.
[0039] Embodiment two
[0040] On the basis of embodiment one, the blocking plate 21 and the cleaning plate 9 are both made of stainless steel, and the side of the cleaning plate 9 abutting against the guide plate 4 is provided with brush hairs made of stainless steel.
[0041] The blocking plate 21 and the cleaning plate 9 made of stainless steel have excellent corrosion resistance and high-temperature resistance, and are suitable for various flue gas environments. The guide plate 4 is cleaned through the brush hairs, so as to avoid the risk that the guide plate 4 is stuck when it is directly cleaned by the cleaning plate 9, because the rotation angle of the guide plate 4 does not reach the same as that of the other guide plates 4, and the rotation angle of the guide plate 4 protrudes from the plane formed by all the guide plates 4. The brush hairs made of stainless steel with certain toughness can ensure effective cleaning of all the guide plates 4.
[0042] One end of the rotating shaft 5 penetrating through the variable flue 1 is provided with a limiting nut 8 through screwing.
[0043] The rotating shaft 5 can drive the guide plate 4 to rotate to any angle in the variable flue 1. In order to avoid the guide plate 4 being blown by the high-temperature flue gas when flowing, so as to change the predetermined angle of the guide plate 4, the limiting nut 8 is arranged on one end of the rotating shaft 5 penetrating through the variable flue 1 through screwing, so as to ensure that when the guide plate 4 is rotated to the required angle, the limiting nut 8 is moved to the direction of the variable flue 1 until the limiting nut 8 abuts against the outer wall of the variable flue 1, so as to fix the corresponding rotation angle of the guide plate 4 and ensure the stability of the guide plate 4 during work.
[0044] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or additions or substitutions within the technical scope disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A flow guiding device for a flue, comprising a variable cross-section flue (1), the end of which with the larger cross-section being the outlet end (3) and the end of which with the smaller cross-section being the inlet end (2), characterized in that, The variable-diameter flue (1) is internally provided with a plurality of guide plates (4), the middle part of the guide plate (4) is provided with a rotating shaft (5), the guide plate (4) is installed in the variable-diameter flue (1) through the rotating shaft (5), one end of the rotating shaft (5) penetrates one side of the variable-diameter flue (1), the end of the rotating shaft (5) penetrating the variable-diameter flue (1) is provided with a pointer (7), the side of the variable-diameter flue (1) is provided with a scale (6) matched with the pointer (7), the top of the variable-diameter flue (1) is provided with a placing groove (10), the placing groove (10) is provided with a cleaning plate (9), the top of the variable-diameter flue (1) is provided with a lifting device for driving the cleaning plate (9), and the bottom of the variable-diameter flue (1) is provided with a temporary storage bin (18).
2. A flow guiding device for a flue according to claim 1, characterized in that The lifting device comprises a motor (11), the motor (11) is arranged at the top of the variable-diameter flue (1), the power output end of the motor (11) is provided with a threaded rod (12), the threaded rod (12) is provided with a connecting plate (13) through screw thread, and the two ends of the connecting plate (13) are connected with the cleaning plate (9) through driving rods (14) penetrating the top of the variable-diameter flue (1) respectively.
3. A flow guiding device for a flue according to claim 1, characterized in that The width of the cleaning plate (9) along the direction of the flue gas flow is the same as the spacing between the adjacent guide plates (4), and the guide plate (4) is made of stainless steel.
4. A flow guiding device for a flue according to claim 1, characterized in that The cleaning plate (9) is arranged above the guide plate (4), the variable-diameter flue (1) below the guide plate (4) is provided with a pollution discharge port (15), and the temporary storage bin (18) is arranged at the pollution discharge port (15).
5. A flow guiding device for a flue according to claim 4, characterised in that The variable-diameter flue (1) is provided with a first limiting groove (16) at the pollution discharge port (15), the temporary storage bin (18) is provided with a first limiting block (17) matched with the first limiting groove (16), the opening at the top of the temporary storage bin (18) is provided with a second limiting groove (19), the opening of the temporary storage bin (18) is provided with a sealing plate (21), and the opposite sides of the sealing plate (21) are provided with second limiting blocks (20) matched with the second limiting groove (19).
6. A flow guiding device for a flue according to claim 5, characterised in that The sealing plate (21) and the cleaning plate (9) are made of stainless steel, and the side of the cleaning plate (9) abutting against the guide plate (4) is provided with a brush made of stainless steel.
7. A flow guiding device for a flue according to claim 1, characterized in that One end of the rotating shaft (5) penetrating the variable-diameter flue (1) is provided with a limiting nut (8) through screw thread.