A baffle for a large flue

Abstract

The utility model discloses a guide vane for large flue relates to flue gas treatment equipment technical field, including flue body, its characterized in that, three guide vanes are rotationally arranged in the flue body, electric push rod is fixedly arranged on the flue body outside, the adjusting rod is slidably arranged in the flue body, the adjusting rod end extends out the flue body and is fixedly connected with electric push rod output shaft, three locating rings are fixedly arranged on the adjusting rod, the limit slot is set up on the guide vane, the sliding block is slidably arranged in the limit slot, the pull rod is arranged between the sliding block and the locating ring, one end of the pull rod is connected with the sliding block rotation, the other end is connected with the locating ring rotation, can realize the closure of flue body and flue gas flow regulation through the control guide vane, solves the guide vane and the baffle door two sets of devices in the prior art in flue simultaneously need to set up and realizes the guide and the closure, has increased the equipment cost and the problem of flue complexity.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas treatment equipment, specifically a guide plate for large flues. Background Technology

[0002] In traditional desulfurization systems, guide baffles are often installed behind the induced draft fan to facilitate the maintenance of individual units and to isolate them from the precursor and denitrification and dust removal equipment. At the same time, to prevent the desulfurization flue gas from corroding the roof plate over a long period of time, guide plates are often installed at the bends of the flue to control and guide the flue gas.

[0003] For example, Chinese utility model patent CN220083095U proposes a high-efficiency flow guiding device for flues; multiple flow guiding plates are evenly arranged inside the flue, and a baffle plate needs to be set at the flue outlet to seal the flue. This results in two sets of structures occupying a large space. Furthermore, if an automated drive is required, two sets of drive equipment are needed to guide the flue gas and seal the flue, which increases the manufacturing cost of the device. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a guide vane for large flues, which solves the problem that in the prior art, two sets of devices—a guide vane and a baffle gate—are required simultaneously to achieve both flow guidance and closure within the flue, increasing equipment costs and pipeline complexity.

[0005] To achieve the above objectives, this utility model proposes a guide plate for a large flue, comprising a flue body. The guide plate is characterized by three guide plates rotatably disposed within the flue body, an electric push rod fixedly disposed on the outer side of the flue body, an adjusting rod slidably disposed within the flue body, the end of the adjusting rod extending out of the flue body and fixedly connected to the output shaft of the electric push rod, three positioning rings fixedly disposed on the adjusting rod, a limiting groove formed on the guide plate, a slider slidably disposed within the limiting groove, a pull rod disposed between the slider and the positioning rings, one end of the pull rod being rotatably connected to the slider, and the other end being rotatably connected to the positioning rings.

[0006] As a further embodiment of this utility model, the guide plates are equidistantly arranged within the flue body.

[0007] As a further embodiment of this utility model: rotating shafts are fixedly installed on both sides of the guide plate, and the rotating shafts are rotatably connected to the flue body.

[0008] As a further embodiment of this utility model, the guide plate adopts a double-layer hollow structure.

[0009] As a further embodiment of this utility model: a limiting frame is fixedly installed on the outside of the flue body, and the electric push rod is fixedly installed inside the limiting frame.

[0010] As a further embodiment of this utility model, a sealing ring is fixedly provided at the contact point between the flue body and the side of the adjusting rod.

[0011] As a further embodiment of this utility model, the positioning ring corresponds one-to-one with the guide plate.

[0012] As a further embodiment of this utility model, an elastic sealing ring is fixedly installed inside the flue body.

[0013] As a further aspect of this invention, the position of the elastic sealing ring corresponds to that of the rotating shaft.

[0014] As a further embodiment of this utility model, KFM silicon carbide composite ceramic is coated on the outer surface of the guide plate and the adjusting rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. Three guide plates are rotatably installed inside the flue body. An adjusting rod is slidably installed inside the flue body, and a positioning ring is fixedly installed on the adjusting rod. A limit groove is opened on the guide plate, and a slider is slidably installed in the limit groove. A pull rod is rotatably installed between the slider and the positioning ring. An electric push rod is installed on the outside of the flue body to drive the adjusting rod. When the electric push rod is activated, the adjusting rod is pulled to the outside of the flue body, causing the positioning ring to retract. Through the transmission of the pull rod, the slider is pulled, and the slider slides down along the limit groove. At the same time, the guide plate is pulled to rotate around the pivot, thereby reducing the size of the guide ventilation opening until the flue body is closed. When the electric push rod is activated, the adjusting rod is pushed to the inside of the flue body, causing the positioning ring to extend. Through the transmission of the pull rod, the slider is pushed to slide up along the limit groove, and the guide plate is pushed to rotate around the pivot, thereby increasing the size of the guide ventilation opening. Thus, the guide opening is adjusted, and the guide plate can also function as a baffle plate in the prior art.

[0017] 2. The deflector adopts a double-layer hollow structure, filled with a ceramic fiber heat insulation layer. The hollow layer allows for thermal expansion and deformation, eliminating the risk of warping caused by temperature difference in a single-layer structure. The filling layer can effectively reduce resonance fatigue damage. The outer surface of the deflector and adjusting rod is coated with KFM silicon carbide composite ceramic, which effectively improves the wear resistance and erosion resistance of the deflector and extends its service life. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the guide plate of this utility model in its sealed state;

[0019] Figure 2This is a three-dimensional structural diagram of the deflector plate of this utility model in the open state;

[0020] Figure 3 This utility model Figure 2 A sectional view;

[0021] Figure 4 This utility model Figure 3 A schematic diagram of the structure of the guide vane and adjusting rod;

[0022] Figure 5 This utility model Figure 4 Enlarged view of point A;

[0023] Figure 6 This utility model Figure 3 Enlarged view of point B.

[0024] In the diagram: 1. Flue body; 2. Limiting frame; 3. Electric push rod; 4. Sealing ring; 5. Guide plate; 6. Elastic sealing ring; 7. Adjusting rod; 8. Positioning ring; 9. Rotating shaft; 10. Pull rod; 11. Sliding block; 12. Limiting groove. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] like Figure 1-6As shown, a guide plate for a large flue includes a flue body 1, with a plurality of guide plates 5 rotatably disposed within the flue body 1. The guide plates 5 are equidistantly arranged within the flue body 1. Specifically, rotating shafts 9 are fixedly installed on both sides of the guide plates 5, and the rotating shafts 9 are rotatably connected to the flue body 1. The guide plates 5 adopt a double-layer hollow structure, filled with a ceramic fiber heat insulation layer. The hollow layer allows for thermal expansion and deformation, eliminating the risk of warping caused by temperature differences in a single-layer structure. The filling layer can effectively reduce resonance fatigue damage. In this embodiment, there are three guide plates 5, and a plurality of guide plates 5 are fixedly disposed within the flue body 1. An elastic sealing ring 6 is positioned on the same horizontal plane as the rotating shaft 9 and is wider than the rotating shaft 9. In the initial state, with the three guide plates 5 rotating at zero degrees, the three guide plates 5 cooperate with the elastic sealing ring 6 to seal the flue body 1. A limit frame 2 is fixedly installed on the outside of the flue body 1, and an electric push rod 3 is fixedly installed inside the limit frame 2. An adjusting rod 7 is slidably installed inside the flue body 1. One end of the adjusting rod 7 is located inside the flue body 1, and the other end extends out of the flue body 1 and is fixedly connected to the output shaft of the electric push rod 3. This is to increase the sealing performance of the flue body 1. A sealing ring 4 is fixedly connected at the contact point between the flue body 1 and the side of the adjusting rod 7. A positioning ring 8 is fixedly installed on the adjusting rod 7. The number of positioning rings 8 is the same as that of the guide plate 5, and their positions correspond one-to-one with those of the guide plate 5. In this embodiment, there are three positioning rings. A limiting groove 12 is opened on the guide plate 5. The limiting groove 12 is located in the middle of the guide plate 5. A slider 11 is slidably installed in the limiting groove 12. A pull rod 10 is installed between the slider 11 and the positioning ring 8. One end of the pull rod 10 is rotatably connected to the slider 11, and the other end is rotatably connected to the positioning ring 8. When the electric push rod 3 is activated, the flue body 1 is moved towards the adjusting rod 7. Pulling the adjusting rod 7 on the outside of the body 1 causes the positioning ring 8 to retract. Through the transmission of the pull rod 10, the slider 11 is pulled. The slider 11 slides downward along the limiting groove 12, and at the same time, the guide plate 5 is pulled and rotates around the rotating shaft 9, thereby reducing the size of the guide ventilation opening until the flue body 1 is closed. The electric push rod 3 is activated to push the adjusting rod 7 inward to the inside of the flue body 1, causing the positioning ring 8 to extend. Through the transmission of the pull rod 10, the slider 11 is pushed upward along the limiting groove 12, and at the same time, the guide plate 5 is pushed to rotate around the rotating shaft 9, thereby increasing the size of the guide ventilation opening.

[0027] As one embodiment of this invention, in order to increase the practicality of the device, the outer surfaces of the guide plate 5 and the adjusting rod 7 are coated with KFM silicon carbide composite ceramic to increase their corrosion resistance.

[0028] Working principle:

[0029] Activate the electric push rod 3 to push the adjusting rod 7 inward to the inside of the flue body 1, causing the positioning ring 8 to extend. Through the transmission of the pull rod 10, the slider 11 is pushed to slide upward along the limiting groove 12. At the same time, the guide plate 5 is pushed to rotate around the rotating shaft 9, thereby increasing the size of the guide ventilation opening and thus regulating the flue gas flow. Activate the electric push rod 3 to pull the adjusting rod 7 outward to the outside of the flue body 1, causing the positioning ring 8 to retract. Through the transmission of the pull rod 10, the slider 11 is pulled, and the slider 11 slides downward along the limiting groove 12. At the same time, the guide plate 5 is pulled to rotate around the rotating shaft 9, thereby reducing the size of the guide ventilation opening and finally closing the flue body 1.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A baffle plate for a large flue, comprising a flue body (1), characterized in that, Three guide plates (5) are rotatably arranged inside the flue body (1). An electric push rod (3) is fixedly arranged on the outside of the flue body (1). An adjusting rod (7) is slidably arranged inside the flue body (1). The end of the adjusting rod (7) extends out of the flue body (1) and is fixedly connected to the output shaft of the electric push rod (3). Three positioning rings (8) are fixedly arranged on the adjusting rod (7). A limiting groove (12) is opened on the guide plate (5). A slider (11) is slidably arranged in the limiting groove (12). A pull rod (10) is arranged between the slider (11) and the positioning ring (8). One end of the pull rod (10) is rotatably connected to the slider (11), and the other end is rotatably connected to the positioning ring (8).

2. A guide vane for large flues according to claim 1, characterized in that, The guide plates (5) are equidistantly arranged inside the flue body (1).

3. A guide vane for large flues according to claim 1, characterized in that, The guide plate (5) is fixedly installed with rotating shafts (9) on both sides, and the rotating shafts (9) are rotatably connected to the flue body (1).

4. A guide vane for large flues according to claim 1, characterized in that, The guide plate (5) adopts a double-layer hollow structure.

5. A guide vane for large flues according to claim 1, characterized in that, A limiting frame (2) is fixedly installed on the outside of the flue body (1), and the electric push rod (3) is fixedly installed inside the limiting frame (2).

6. A guide vane for large flues according to claim 1, characterized in that, A sealing ring (4) is fixedly provided at the contact point between the flue body (1) and the side of the adjusting rod (7).

7. A guide vane for large flues according to claim 2, characterized in that, The positioning ring (8) corresponds one-to-one with the guide plate (5).

8. A guide vane for a large flue according to claim 3, characterized in that, An elastic sealing ring (6) is fixedly installed inside the flue body (1).

9. A guide vane for a large flue according to claim 8, characterized in that, The position of the elastic sealing ring (6) corresponds to that of the rotating shaft (9).

10. A guide vane for a large flue according to claim 1, characterized in that, The outer surfaces of the guide plate (5) and the adjusting rod (7) are coated with KFM silicon carbide composite ceramic.

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