An angle iron flange air pipe connecting structure convenient to disassemble and assemble

Abstract

The utility model discloses a corner iron flange air pipe connecting structure convenient to dismount relates to flange air pipe technical field, including the air pipe body, the left side of air pipe body is welded with side angle iron flange, the right side of air pipe body is welded with flange limiting sleeve. This corner iron flange air pipe connecting structure convenient to dismount is provided with air pipe body, side angle iron flange, first flange screw eye, flange limiting sleeve, air pipe mouth, second flange screw eye and bottom support plate, when two groups of corner iron flange air pipe butt joint, the side angle iron flange of right side corner iron flange air pipe inserts along the opening on the left side corner iron flange air pipe flange limiting sleeve and presses to and bottom support plate contact, the first flange screw eye on side angle iron flange and the second flange screw eye on flange limiting sleeve align at this moment, and four groups of bolts can be fixed, realize the function convenient to dismount, solve the device corner iron flange air pipe connecting structure dismounting troublesome problem.

Description

Technical Field

[0001] This utility model relates to the field of flange duct technology, specifically to an angle iron flange duct connection structure that is easy to assemble and disassemble. Background Technology

[0002] Angle steel flange connection is a traditional method of duct connection. The flange is generally made of angle iron (hence the name angle iron flange). The angle iron is usually fixed to both ends of the duct by riveting. After the flanges of the two duct sections are joined together, a sealing gasket is added in the middle and bolts are used to connect them.

[0003] The advantages of angle steel flange connections are high strength, good stability and sealing, and resistance to deformation. The disadvantages are that there are many flange bolt holes for mating, and bolts need to be driven in one by one after alignment during installation, resulting in low installation efficiency and troublesome disassembly and assembly.

[0004] Now, a new type of angle iron flange duct connection structure that is easy to assemble and disassemble is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an angle iron flange duct connection structure that is easy to disassemble and assemble, so as to solve the problem of troublesome disassembly and assembly of the angle iron flange duct connection structure mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a duct connection structure with an angle iron flange that is easy to assemble and disassemble, comprising a duct body, a side angle iron flange welded to the left side of the duct body, first flange bolt holes respectively opened at the four corners on the left side of the side angle iron flange, a flange limiting sleeve welded to the right side of the duct body, a duct opening opened at the middle position on the left side of the flange limiting sleeve, second flange bolt holes respectively opened at the four corners on the left and right sides of the flange limiting sleeve, a bottom support plate welded to the bottom end of the flange limiting sleeve, a rubber sealing ring glued to the left side inside the flange limiting sleeve, sealing ring bolt holes respectively opened at the four corners on the right side of the rubber sealing ring, and fixing nuts welded to the four corners on the left side of the flange limiting sleeve.

[0007] As a further technical solution of this utility model, the external shape and size of the side angle iron flange are adapted to the internal shape and size of the flange limiting sleeve, and the side angle iron flange slides up and down along the inside of the flange limiting sleeve.

[0008] As a further technical solution of this utility model, the inner diameter of the duct opening is the same as the inner diameter of the duct body, and the interiors of the duct body and the duct opening are connected.

[0009] As a further technical solution of this utility model, the bottom ends of the flange limiting sleeve and the bottom support plate are flush, and the right sides of the flange limiting sleeve and the bottom support plate are flush.

[0010] As a further technical solution of this utility model, the first flange bolt eye, the second flange bolt eye, and the sealing ring bolt eye are of the same size, and the horizontal center lines of the first flange bolt eye, the second flange bolt eye, and the sealing ring bolt eye coincide.

[0011] As a further technical solution of this utility model, the inner diameters of the second flange bolt eye and the fixing nut are the same, and the horizontal center lines of the second flange bolt eye and the fixing nut coincide.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the easy-to-disassemble angle iron flange duct connection structure not only realizes the function of easy disassembly and assembly, but also the function of easy sealing and easy locking;

[0013] (1) By setting up a duct body, side angle iron flange, first flange bolt eye, flange limiting sleeve, duct opening, second flange bolt eye and bottom support plate, when the two sets of angle iron flange ducts are connected, the side angle iron flange of the right angle iron flange duct is inserted along the opening on the flange limiting sleeve of the left angle iron flange duct and pressed until it contacts the bottom support plate. At this time, the first flange bolt eye on the side angle iron flange and the second flange bolt eye on the flange limiting sleeve are aligned. Four sets of bolts can be driven in to fix it, which reduces the number of bolts, improves the connection speed and realizes the function of easy disassembly and assembly.

[0014] (2) By setting a rubber sealing ring and a sealing ring screw hole, when in use, the rubber sealing ring fits against one side of the flange limiting sleeve. As the side angle iron flange is inserted into the flange limiting sleeve, the side of the side angle iron flange fits against the rubber sealing ring. The screw hole of the sealing ring facilitates the passage of bolts. As the bolts are gradually tightened, the flange limiting sleeve gradually shrinks and clamps the side angle iron flange. In conjunction with the rubber sealing ring, the sealing performance is further improved, thus realizing the function of easy sealing.

[0015] (3) With the second flange bolt eye and fixing nut provided, when in use, as the side angle iron flange is inserted into the flange limit sleeve, the bolt is inserted along the second flange bolt eye. The bolt passes through the second flange bolt eye and the fixing nut thread engages, and it is gradually tightened. The assembly is simpler and the function of easy locking is realized. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a side view of the side angle iron flange of this utility model.

[0019] Figure 4This is a side view of the flange limiting sleeve of this utility model.

[0020] Figure 5 This is a side view of the rubber sealing ring structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the actual assembly steps of this utility model.

[0022] In the diagram: 1. Main body of the duct; 2. Side angle iron flange; 3. First flange bolt eye; 4. Flange limit sleeve; 5. Duct opening; 6. Second flange bolt eye; 7. Base plate; 8. Rubber sealing ring; 9. Sealing ring bolt eye; 10. Fixing nut. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Please refer to Figure 1-6 A duct connection structure with an angle iron flange that is easy to disassemble and assemble includes a duct body 1, a side angle iron flange 2 welded to the left side of the duct body 1, first flange bolt holes 3 respectively opened at the four corners on the left side of the side angle iron flange 2, a flange limiting sleeve 4 welded to the right side of the duct body 1, a duct opening 5 opened at the middle position on the left side of the flange limiting sleeve 4, second flange bolt holes 6 respectively opened at the four corners on the left and right sides of the flange limiting sleeve 4, and a bottom support plate 7 welded to the bottom end of the flange limiting sleeve 4.

[0025] The external shape and size of the side angle iron flange 2 are compatible with the internal shape and size of the flange limiting sleeve 4. The side angle iron flange 2 slides up and down along the inside of the flange limiting sleeve 4. The inner diameter of the duct outlet 5 is the same as the inner diameter of the duct body 1. The interiors of the duct body 1 and the duct outlet 5 are connected. The bottom ends of the flange limiting sleeve 4 and the bottom support plate 7 are flush. The right sides of the flange limiting sleeve 4 and the bottom support plate 7 are flush, which facilitates quick installation, docking and disassembly.

[0026] Specifically, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 6As shown, when the two sets of angle iron flange ducts are connected, the side angle iron flange 2 of the right angle iron flange duct is inserted along the opening on the flange limiting sleeve 4 of the left angle iron flange duct and pressed until it contacts the bottom support plate 7. At this time, the first flange bolt eye 3 on the side angle iron flange 2 and the second flange bolt eye 6 on the flange limiting sleeve 4 are aligned. Four sets of bolts can be driven in to fix it, which reduces the number of bolts and improves the connection speed.

[0027] A rubber sealing ring 8 is glued to the left side inside the flange limiting sleeve 4. Sealing ring screw holes 9 are opened at the four corners on the right side of the rubber sealing ring 8. The first flange screw hole 3, the second flange screw hole 6, and the sealing ring screw hole 9 are the same size. The horizontal center lines of the first flange screw hole 3, the second flange screw hole 6, and the sealing ring screw hole 9 coincide to increase the sealing performance.

[0028] Specifically, such as Figure 1 and Figure 5 As shown, the rubber sealing ring 8 is fitted to one side inside the flange limiting sleeve 4. As the side angle iron flange 2 is inserted into the flange limiting sleeve 4, the side of the side angle iron flange 2 and the rubber sealing ring 8 are fitted together. The screw hole 9 of the sealing ring facilitates the passage of bolts. As the bolts are gradually tightened, the flange limiting sleeve 4 gradually contracts and clamps the side angle iron flange 2, which, together with the rubber sealing ring 8, further improves the sealing performance.

[0029] Fixing nuts 10 are welded to the four corners on the left side of the flange limiting sleeve 4. The inner diameters of the second flange bolt eye 6 and the fixing nuts 10 are the same, and the horizontal center lines of the second flange bolt eye 6 and the fixing nuts 10 coincide, which facilitates locking.

[0030] Specifically, such as Figure 1 and Figure 6 As shown, as the side angle iron flange 2 is inserted into the flange limiting sleeve 4, the bolt is inserted along the second flange bolt eye 6. The bolt passes through the second flange bolt eye 6 and engages with the threaded fixing nut 10. It can be tightened gradually, making the assembly simpler.

[0031] Working Principle: In use, when connecting two sets of angle iron flange ducts, the side angle iron flange 2 of the right-side angle iron flange duct is inserted along the opening on the flange limiting sleeve 4 of the left-side angle iron flange duct and pressed until it contacts the bottom support plate 7. At this time, the first flange bolt eye 3 on the side angle iron flange 2 and the second flange bolt eye 6 on the flange limiting sleeve 4 are aligned. Four sets of bolts are then driven in to fix it, reducing the number of bolts and increasing the connection speed. As the side angle iron flange 2 is inserted into the flange limiting sleeve 4, the bolts are inserted along the second flange bolt eye 6. The bolts pass through the second flange bolt eye 6 and engage with the threaded fixing nut 10, gradually tightening them. Assembly is simpler. The rubber sealing ring 8 is fitted inside the flange limiting sleeve 4 on one side, and the side of the side angle iron flange 2 is fitted with the rubber sealing ring 8. The sealing ring bolt eye 9 facilitates bolt passage. As the bolts are gradually tightened, the flange limiting sleeve 4 gradually contracts to clamp the side angle iron flange 2, further improving the sealing performance in conjunction with the rubber sealing ring 8.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A conveniently dismountable angle iron flange air pipe connecting structure, comprising an air pipe main body (1), characterized in that: A side angle iron flange (2) is welded to the left side of the duct body (1). A first flange bolt eye (3) is opened at the four corners on the left side of the side angle iron flange (2). A flange limiting sleeve (4) is welded to the right side of the duct body (1). A duct opening (5) is opened at the middle position on the left side of the flange limiting sleeve (4). A second flange bolt eye (6) is opened at the four corners on the left and right sides of the flange limiting sleeve (4). A bottom support plate (7) is welded to the bottom end of the flange limiting sleeve (4). A rubber sealing ring (8) is glued to the left side inside the flange limiting sleeve (4). A sealing ring bolt eye (9) is opened at the four corners on the right side of the rubber sealing ring (8). A fixing nut (10) is welded to the four corners on the left side of the flange limiting sleeve (4).

2. The angle iron flange duct connection structure for easy assembly and disassembly according to claim 1, characterized in that: The external shape and size of the side angle iron flange (2) are adapted to the internal shape and size of the flange limiting sleeve (4), and the side angle iron flange (2) slides up and down along the inside of the flange limiting sleeve (4).

3. The angle iron flange duct connection structure for easy assembly and disassembly according to claim 1, characterized in that: The inner diameter of the duct opening (5) is the same as the inner diameter of the duct body (1), and the interiors of the duct body (1) and the duct opening (5) are connected.

4. The angle iron flange duct connection structure for easy assembly and disassembly according to claim 1, characterized in that: The bottom ends of the flange limiting sleeve (4) and the bottom support plate (7) are flush, and the right sides of the flange limiting sleeve (4) and the bottom support plate (7) are flush.

5. The angle iron flange duct connection structure for easy assembly and disassembly according to claim 1, characterized in that: The first flange bolt eye (3), the second flange bolt eye (6), and the sealing ring bolt eye (9) have the same size, and the horizontal center lines of the first flange bolt eye (3), the second flange bolt eye (6), and the sealing ring bolt eye (9) coincide.

6. The angle iron flange duct connection structure for easy assembly and disassembly according to claim 1, characterized in that: The inner diameters of the second flange bolt eye (6) and the fixing nut (10) are the same, and the horizontal center lines of the second flange bolt eye (6) and the fixing nut (10) coincide.

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