Quick-connection type sealing element for boiler air duct

Abstract

The utility model belongs to the technical field of boiler air duct sealing, and particularly relates to a boiler air duct quick-connection type sealing element which comprises a boiler air duct body, a quick-connection type filtering assembly is arranged in the boiler air duct body, and the quick-connection type filtering assembly comprises a mounting frame inserted into a longitudinal penetrating slot formed in the boiler air duct body. The mounting frame is slidably connected with the boiler air duct body, and rectangular frames are inserted into quick-connection inserting grooves formed in the surfaces of the two ends of the mounting frame. The furnace is not required to be shut down, the production efficiency is improved, the shutdown cost is reduced, the sealing effect can be flexibly adjusted, different working conditions are adapted, and the equipment adaptability and reliability are enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of boiler air duct sealing, and specifically relates to a quick-connection type sealing element for a boiler air duct. BACKGROUND

[0002] An air duct is an important component of a boiler and is generally made of steel plate. The hot air duct of a boiler generally refers to a primary air duct, because the primary air is heated by an air preheater before entering the furnace, while the secondary air is not heated and is also called a cold air duct. During the installation of the air duct and the boiler air inlet pipe, a pipe sealing element is used to connect and seal the pipe, thereby avoiding air leakage of the pipe.

[0003] According to the search, a boiler air duct sealing element (CN220269427U) is disclosed. In this technology, the boiler air duct sealing element includes a sealing connector in a frame structure and two boiler air duct bodies that can be detachably fixed at both ends of the sealing connector. The hollow cavities of the two boiler air duct bodies are provided with a delivery channel. This technical solution has the technical effects of facilitating the disassembly, cleaning and installation of the filter element, and does not require disassembly of the filter air duct during the disassembly and cleaning process, thereby improving the convenience of filter element cleaning.

[0004] Although this design has the technical effects of facilitating the disassembly, cleaning and installation of the filter element, and does not require disassembly of the filter air duct during the disassembly and cleaning process, thereby improving the convenience of filter element cleaning, the boiler needs to be stopped during the disassembly, cleaning and installation of the filter element, which not only affects the production efficiency, but also may cause damage to the boiler equipment due to frequent start and stop. UTILITY MODEL CONTENTS

[0005] To solve the problems raised in the background art, the utility model provides a quick-connection type sealing element for a boiler air duct, which ensures the fixation of the rectangular frame and the easy replacement of the filter screen, does not require shutdown, improves the production efficiency, reduces the shutdown cost, can flexibly adjust the sealing effect, adapts to different working conditions, and enhances the adaptability and reliability of the equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a quick-connection type sealing element for a boiler air duct, comprising a boiler air duct body, a quick-connection type filter assembly arranged inside the boiler air duct body, the quick-connection type filter assembly comprising an installation frame inserted into a longitudinal through slot inside the boiler air duct body, the installation frame and the boiler air duct body being in sliding connection, a quick-connection slot being formed in the surface of both ends of the installation frame, and a rectangular frame being inserted into each quick-connection slot, both rectangular frames being in sliding connection with the installation frame, and a filter screen being fixedly connected inside each rectangular frame.

[0007] As the utility model discloses a kind of quick-connection type sealing elements of boiler air duct, which is characterized by comprising rectangular frame, two U-shaped clamping plates, two limiting plates, two auxiliary insertion grooves, two hard sealing strips, two shape-changing rubber blocks and H-shaped plate.

[0008] As the utility model discloses a kind of quick-connection type sealing elements of boiler air duct, the limiting plate is located in the interior of U-shaped clamping plate, and the limiting plate and U-shaped clamping plate are slidably connected.

[0009] As the utility model discloses a kind of quick-connection type sealing elements of boiler air duct, the two ends of the installation frame are respectively symmetrically provided with auxiliary insertion grooves, which are connected with the interior of quick-connection insertion groove, two U-shaped clamping plates are respectively fixedly connected with soft rubber blocks on the side away from each other, and the soft rubber blocks are inserted into the interior of auxiliary insertion groove.

[0010] As the utility model discloses a kind of quick-connection type sealing elements of boiler air duct, the surface of the installation frame is provided with sealing assembly, the sealing assembly includes first U-shaped plate, second U-shaped plate and built-in pull rod, two first U-shaped plates are symmetrically arranged on the two sides of the installation frame, and each first U-shaped plate is provided with second U-shaped plate on the side away from the installation frame, two parallel built-in pull rods are inserted into the interior of each second U-shaped plate, and the end of the built-in pull rod away from the second U-shaped plate is inserted into the interior of the first U-shaped plate, the two ends of the built-in pull rod are rotatably connected with the second U-shaped plate and the first U-shaped plate through shaft pin, the second U-shaped plate and the first U-shaped plate are located in the rectangular sliding slot formed in the interior of the boiler air duct body, and the first U-shaped plate is slidably connected with the boiler air duct body.

[0011] As the utility model discloses a kind of quick-connection type sealing elements of boiler air duct, the sealing assembly further includes hard sealing strip and shape-changing rubber block, the surface of the installation frame is fixedly connected with hard sealing strip, and the side of the first U-shaped plate away from the second U-shaped plate is fixedly connected with shape-changing rubber block.

[0012] As the utility model discloses a kind of quick-connection type sealing elements of boiler air duct, the sealing assembly further includes H-shaped plate, one end of the second U-shaped plate penetrates the outer communication groove formed in the surface of the boiler air duct body, the second U-shaped plate and the boiler air duct body are slidably connected, one side of the boiler air duct body is provided with H-shaped plate, and one end of the second U-shaped plate and H-shaped plate are fixedly connected.

[0013] Compared with the prior art, the beneficial effects of the utility model are that: the fast-connection type filtering assembly is added on the application, the filter screen is easy to replace, the furnace does not need to be stopped, the production efficiency is improved, the continuous production is guaranteed, the fast-connection structure is convenient for daily maintenance, reduces the operation technical threshold, improves the equipment maintainability and practicality, at the same time, the sealing assembly is added, which is favorable for enhancing the air duct sealing property, preventing gas leakage, reducing energy waste, at the same time, the part connection is firm, various working conditions are adapted, and the equipment stable operation is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0015] Figure 1 It is the whole structure schematic diagram of the utility model;

[0016] Figure 2 It is the utility model Figure 1 The sectional view at A-A in the utility model;

[0017] Figure 3 It is the utility model Figure 2 The enlarged view at A in the utility model;

[0018] Figure 4 It is the utility model Figure 2 The enlarged view at B in the utility model;

[0019] Figure 5 It is the structure schematic diagram of the boiler air duct main body in the utility model;

[0020] Figure 6 It is the structure schematic diagram of the H-shaped plate and the second U-shaped plate in the utility model;

[0021] Figure 7 It is the structure schematic diagram of the built-in pull rod and the first U-shaped plate in the utility model;

[0022] Figure 8 It is the structure schematic diagram of the hard sealing strip and the mounting frame in the utility model;

[0023] Figure 9 It is the structure schematic diagram of the rectangular frame and the filter screen in the utility model;

[0024] Figure 10 It is the structure schematic diagram of the optical axis and the U-shaped clamping plate in the utility model;

[0025] In the drawings:

[0026] 1, boiler air duct main body;

[0027] 2, fast filter assembly; 21, longitudinal through slot; 22, mounting frame; 23, fast plug slot; 24, rectangular frame; 25, filter screen; 26, limiting plate; 27, limiting groove; 28, auxiliary slot; 29, soft rubber block; 210, U-shaped clamping plate; 211, bent sliding groove; 212, optical axis; 213, built-in transverse groove;

[0028] 3, sealing assembly; 31, hard sealing strip; 32, rectangular sliding groove; 33, first U-shaped plate; 34, second U-shaped plate; 35, deformed rubber block; 36, external communication groove; 37, H-shaped plate; 38, built-in pull rod. DETAILED DESCRIPTION

[0029] 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.

[0030] As shown in the accompanying drawings: Figures 1 to 10 A fast sealing assembly for a boiler air duct, comprising a boiler air duct body 1.

[0031] In the present embodiment: According to the search publication (announcement) No. CN220269427U, a boiler air duct sealing assembly is disclosed, which has the technical effects of facilitating the disassembly, cleaning and installation of the filter, and does not need to disassemble the filter air duct during the disassembly and cleaning process, thereby improving the convenience of cleaning the filter. However, the operation of the boiler needs to be stopped during the disassembly, cleaning and installation of the filter, which not only affects the production efficiency, but also may cause certain damage to the boiler equipment due to frequent start and stop. In order to solve this technical problem, a fast filter assembly 2 and a sealing assembly 3 are added on this basis.

[0032] Further:

[0033] As shown in the accompanying drawings: Figures 1 to 10

[0034] In combination with the above content: The fast filter assembly 2 is arranged inside the boiler air duct body 1, the fast filter assembly 2 comprises a mounting frame 22 inserted inside the longitudinal through slot 21 arranged in the boiler air duct body 1, the mounting frame 22 is in sliding connection with the boiler air duct body 1, the fast plug slots 23 arranged on the surfaces of both ends of the mounting frame 22 each have a rectangular frame 24 inserted therein, both rectangular frames 24 are in sliding connection with the mounting frame 22, and both rectangular frames 24 each have a filter screen 25 fixedly connected inside.

[0035] ​In the embodiment, the installation frame 22 is inserted into the boiler air duct body 1 along the longitudinal through slot 21, at this time, the installation frame 22 and the boiler air duct body 1 form a sliding connection, which ensures the convenience and directionality of installation. During the insertion process, the rectangular frame 24 enters the boiler air duct body 1 together with the installation frame 22, and when the rectangular frame 24 reaches the designated position, the filter screen 25 inside the rectangular frame 24 is also accurately positioned. The filter screen 25 is arranged to achieve the air filtering function in the air duct.

[0036] When the filter screen 25 inside the boiler air duct body 1 needs to be replaced, only the installation frame 22 needs to be slid in the longitudinal through slot 21, so that the replaced filter screen 25 is quickly slid into the inside of the boiler air duct body 1, and the switching between the two filter screens 25 is realized. Then, the filter screen 25 removed from the inside of the boiler air duct body 1 after switching is disassembled and replaced. The whole process does not need to stop the operation of the boiler, and the operation is simple and fast.

[0037] Further, in the embodiment, the two rectangular frames 24 are respectively provided with the filter screen 25, and the filter screen 25 is arranged to achieve the air filtering function in the air duct.

[0038] In an optional embodiment, the two rectangular frames 24 are respectively provided with the limiting plate 26 inserted in the limiting slot 27 opened on the side away from each other. The rectangular frame 24 is provided with the built-in transverse slot 213 communicated with the limiting slot 27, and the built-in transverse slot 213 is symmetrically provided with the two U-shaped clamping plates 210. The two U-shaped clamping plates 210 are in sliding connection with the rectangular frame 24. The U-shaped clamping plate 210 is fixedly connected with the optical shaft 212. The limiting plate 26 is provided with the two symmetrically arranged bending sliding grooves 211, and the optical shaft 212 is inserted in the bending sliding groove 211. The optical shaft 212 and the limiting plate 26 are in sliding connection. The limiting plate 26 is located in the U-shaped clamping plate 210, and the limiting plate 26 and the U-shaped clamping plate 210 are in sliding connection. The two ends of the installation frame 22 are respectively provided with the auxiliary insertion slot 28 communicated with the quick insertion slot 23. The two U-shaped clamping plates 210 are respectively fixedly connected with the soft rubber block 29 away from each other, and the soft rubber block 29 is inserted in the auxiliary insertion slot 28.

[0039] In the embodiment, the optical axis 212 inside the U-shaped clamping plate 210 is inserted into the bending sliding groove 211 of the limiting plate 26, and the limiting plate 26 is limited by the shape of the bending sliding groove 211 to move synchronously with the U-shaped clamping plate 210 on both sides. The ingenious structure design realizes that when the limiting plate 26 moves away from the rectangular frame 24, the optical axis 212 slides inside the bending sliding groove 211, and then the U-shaped clamping plate 210 drives the soft rubber block 29 to slide out of the auxiliary insertion slot 28, and then the rectangular frame 24 outside the boiler air duct body 1 can slide out of the inside of the mounting frame 22, thereby facilitating the replacement of the filter screen 25 at the position. The rectangular frame 24 is inserted into the quick insertion slot 23 after replacement, and the limiting plate 26 is inserted into the limiting slot 27 after the rectangular frame 24 is adjusted in the mounting frame 22. The U-shaped clamping plate 210 drives the soft rubber block 29 to be inserted into the auxiliary insertion slot 28 under the limitation of the shape of the bending sliding groove 211, thereby realizing the fixation of the position between the rectangular frame 24 and the mounting frame 22. The soft rubber block 29 will deform after being extruded, thereby ensuring the sealing of the connection between the rectangular frame 24 and the mounting frame 22, and ensuring the sealing and firm installation of the rectangular frame 24 in the mounting frame 22.

[0040] Further more,

[0041] In an optional embodiment, the surface of the mounting frame 22 is provided with a sealing assembly 3, which comprises a first U-shaped plate 33, a second U-shaped plate 34 and an embedded pull rod 38. The two sides of the mounting frame 22 are respectively provided with two symmetrically arranged first U-shaped plates 33, and each first U-shaped plate 33 is provided with a second U-shaped plate 34 away from the mounting frame 22. Two parallel embedded pull rods 38 are inserted into the inside of each second U-shaped plate 34, and one end of the embedded pull rod 38 away from the second U-shaped plate 34 is inserted into the inside of the first U-shaped plate 33. The two ends of the embedded pull rod 38 are respectively connected with the second U-shaped plate 34 and the first U-shaped plate 33 through shaft pins. The second U-shaped plate 34 and the first U-shaped plate 33 are located in the rectangular sliding groove 32 opened in the inside of the boiler air duct body 1, and the first U-shaped plate 33 is slidingly connected with the boiler air duct body 1. The sealing assembly 3 further comprises a hard sealing strip 31 and a deformation rubber block 35. The surface of the mounting frame 22 is fixedly connected with the hard sealing strip 31, and one side of the first U-shaped plate 33 away from the second U-shaped plate 34 is fixedly connected with the deformation rubber block 35. The sealing assembly 3 further comprises an H-shaped plate 37. One end of the second U-shaped plate 34 penetrates through the outer communication groove 36 opened on the surface of the boiler air duct body 1, and the second U-shaped plate 34 is slidingly connected with the boiler air duct body 1. One side of the boiler air duct body 1 is provided with the H-shaped plate 37, and one end of the second U-shaped plate 34 is fixedly connected with the H-shaped plate 37.

[0042] In this embodiment: the sealing assembly 3 mainly plays the role of enhancing the sealing of the air duct and fixing the position of the mounting frame 22, the hard sealing strip 31 is fixed on the surface of the mounting frame 22, when the mounting frame 22 moves to the appropriate position inside the boiler air duct body 1, the H-shaped plate 37 is pushed towards the boiler air duct body 1, the H-shaped plate 37 drives the second U-shaped plate 34 to move synchronously, the movement of the second U-shaped plate 34 drives the first U-shaped plate 33 to slide inside the rectangular sliding groove 32 through the built-in pull rod 38, so that the deformed rubber block 35 is tightly attached to the surface of the mounting frame 22, and the deformed rubber block 35 deforms during extrusion, thereby filling the gap between the mounting frame 22 and the boiler air duct body 1, improving the sealing effect, when the built-in pull rod 38 and the side of the boiler air duct body 1 are parallel, and the H-shaped plate 37 and the surface of the boiler air duct body 1 are attached to each other as the second U-shaped plate 34 continues to move, under the action of the elastic potential energy of the deformed rubber block 35, thereby realizing the fixation of the positions of the second U-shaped plate 34 and the first U-shaped plate 33, preventing gas leakage in the air duct, and ensuring the stability of the pressure of the air duct system.

[0043] Working principle: when installing, the mounting frame 22 is inserted into the boiler air duct body 1 along the longitudinal through slot 21, at this time the mounting frame 22 and the boiler air duct body 1 form a sliding connection, ensuring the convenience and directionality of installation, during the insertion process, the rectangular frame 24 will enter the air duct body boiler air duct body 1 together with the mounting frame 22, when the rectangular frame 24 reaches the specified position, the filter screen 25 inside it is also accurately positioned, and the filter screen 25 is arranged to realize the filtering function of the air in the air duct;

[0044] When the filter screen 25 inside the boiler air duct body 1 needs to be replaced, only the mounting frame 22 needs to be slid inside the longitudinal through slot 21, so that the replaced filter screen 25 quickly slides into the inside of the boiler air duct body 1, thereby realizing the switching between the two filter screens 25, then the filter screen 25 removed from the inside of the boiler air duct body 1 after switching is disassembled and replaced, the whole process does not need to stop the boiler, the operation is simple and fast;

[0045] The light axis 212 inside the U-shaped clamping plate 210 is inserted into the bending sliding groove 211 of the limiting plate 26, and the limiting plate 26 is limited by the shape of the bending sliding groove 211 to move synchronously with the U-shaped clamping plate 210 on both sides. The ingenious structure design realizes that when the limiting plate 26 moves away from the rectangular frame 24, the light axis 212 slides inside the bending sliding groove 211, and then the U-shaped clamping plate 210 drives the soft rubber block 29 to slide out of the auxiliary slot 28, and then the rectangular frame 24 outside the boiler air duct body 1 can slide out of the inside of the mounting frame 22, so as to facilitate the replacement of the filter screen 25 at the position. After the replacement of the rectangular frame 24 is inserted into the quick connection slot 23, the limiting plate 26 is inserted into the limiting groove 27 when the rectangular frame 24 is adjusted in the inside of the mounting frame 22, and the U-shaped clamping plate 210 drives the soft rubber block 29 to be inserted into the auxiliary slot 28 under the limitation of the bending sliding groove 211, thereby realizing the fixation of the position between the rectangular frame 24 and the mounting frame 22. The soft rubber block 29 will deform after being extruded, thereby ensuring the sealing of the connection between the rectangular frame 24 and the mounting frame 22, and ensuring the sealing and firm installation of the rectangular frame 24 in the mounting frame 22.

[0046] The sealing assembly 3 mainly plays a role in enhancing the sealing of the air duct and fixing the position of the mounting frame 22. The hard sealing strip 31 is fixed on the surface of the mounting frame 22. When the mounting frame 22 is moved to the appropriate position in the inside of the boiler air duct body 1, the H-shaped plate 37 is pushed towards the boiler air duct body 1, the H-shaped plate 37 drives the second U-shaped plate 34 to move synchronously, the movement of the second U-shaped plate 34 drives the first U-shaped plate 33 to slide in the rectangular sliding groove 32 through the built-in pull rod 38, so that the deformed rubber block 35 is tightly combined with the surface of the mounting frame 22, and the deformed rubber block 35 deforms during extrusion, thereby filling the gap between the mounting frame 22 and the boiler air duct body 1, improving the sealing effect. When the built-in pull rod 38 and the side of the boiler air duct body 1 are parallel, and the H-shaped plate 37 and the surface of the boiler air duct body 1 are tightly combined as the second U-shaped plate 34 continues to move, the position of the second U-shaped plate 34 and the first U-shaped plate 33 is fixed under the action of the elastic potential energy of the deformed rubber block 35, which can prevent the gas in the air duct from leaking and ensure the stability of the pressure of the air duct system.

[0047] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A quick connect seal for a boiler air duct, comprising a boiler air duct body (1), characterised in that: The inside of the boiler air duct body (1) is provided with a quick-connection type filtering assembly (2), the quick-connection type filtering assembly (2) comprises an installation frame (22) which is inserted into the inside of a longitudinal through insertion slot (21) which is formed in the boiler air duct body (1), the installation frame (22) and the boiler air duct body (1) are in sliding connection, quick-connection insertion slots (23) are formed in the two end surfaces of the installation frame (22), and rectangular frames (24) are inserted into the quick-connection insertion slots (23), the two rectangular frames (24) are in sliding connection with the installation frame (22), and filtering screens (25) are fixedly connected to the insides of the two rectangular frames (24).

2. The boiler air duct quick connect seal of claim 1, wherein: Limiting grooves (27) are formed in the mutually faraway sides of the two rectangular frames (24), limiting plates (26) are inserted into the limiting grooves (27), built-in transverse grooves (213) are formed in the insides of the rectangular frames (24) and are in communication with the limiting grooves (27), two U-shaped clamping plates (210) are symmetrically arranged in the insides of the built-in transverse grooves (213), the two U-shaped clamping plates (210) are in sliding connection with the rectangular frames (24), optical shafts (212) are fixedly connected to the insides of the U-shaped clamping plates (210), two symmetrically-arranged bending sliding grooves (211) are formed in the inside of the limiting plates (26), the optical shafts (212) are inserted into the bending sliding grooves (211), and the optical shafts (212) and the limiting plates (26) are in sliding connection.

3. The boiler air duct quick connect seal of claim 2, wherein: The limiting plates (26) are located in the insides of the U-shaped clamping plates (210) and are in sliding connection with the U-shaped clamping plates (210).

4. The boiler air duct quick connect seal of claim 2, wherein: Auxiliary insertion slots (28) are symmetrically formed in the insides of the two ends of the installation frame (22) and are in communication with the insides of the quick-connection insertion slots (23), and soft rubber blocks (29) are fixedly connected to the mutually faraway sides of the two U-shaped clamping plates (210) and are inserted into the auxiliary insertion slots (28).

5. The boiler air duct quick connect seal of claim 1, wherein: A sealing assembly (3) is arranged on the surface of the installation frame (22), the sealing assembly (3) comprises first U-shaped plates (33), second U-shaped plates (34) and built-in pull rods (38), two symmetrically-arranged first U-shaped plates (33) are arranged on the two sides of the installation frame (22), a second U-shaped plate (34) is arranged on the side, away from the installation frame (22), of each first U-shaped plate (33), two parallel built-in pull rods (38) are inserted into the inside of each second U-shaped plate (34), one end of each built-in pull rod (38), away from the second U-shaped plate (34), is inserted into the inside of the first U-shaped plate (33), the two ends of each built-in pull rod (38) are rotatably connected with the second U-shaped plate (34) and the first U-shaped plate (33) through shaft pins, the second U-shaped plates (34) and the first U-shaped plates (33) are located in rectangular sliding grooves (32) which are formed in the inside of the boiler air duct body (1), and the first U-shaped plates (33) are in sliding connection with the boiler air duct body (1).

6. The boiler air duct quick connect seal of claim 5, wherein: The sealing assembly (3) further comprises a hard sealing strip (31) and a deformed rubber block (35), the surface of the mounting frame (22) is fixedly connected with the hard sealing strip (31), and one side of the first U-shaped plate (33) away from the second U-shaped plate (34) is fixedly connected with the deformed rubber block (35).

7. The boiler air duct quick connect seal of claim 5, wherein: The sealing assembly (3) further comprises an H-shaped plate (37), one end of the second U-shaped plate (34) penetrates through the outer communication groove (36) formed on the surface of the boiler air duct body (1), the second U-shaped plate (34) is in sliding connection with the boiler air duct body (1), one side of the boiler air duct body (1) is provided with the H-shaped plate (37), and one end of the second U-shaped plate (34) is fixedly connected with the H-shaped plate (37).

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