Combined fire-resistant air pipe

Abstract

The utility model discloses a combined fire-resistant air pipe, and belongs to the technical field of building air pipes. A combined type fire-resistant air pipe comprises air pipe bodies, end connecting plates are fixed to the two ends of each air pipe body, rubber pads are fixed to the side faces of the end connecting plates in an attached mode, inserting assemblies for connecting the two air pipe bodies are arranged on the end connecting plates, and penetrating connecting rods are inserted into first inserting holes in a sliding mode. The penetrating connection rods at the four corners of one end connection plate are inserted into the second inserting holes in the other end connection plate, meanwhile, the stopping protruding blocks penetrate through the through grooves, and therefore the stopping protruding blocks at the ends of the penetrating connection rods move to the other side of the other end connection plate, the penetrating connection rods are rotated, and the stopping protruding blocks are stopped from moving to the other side of the other end connection plate. When the air duct body is spliced, the stop protruding blocks on the penetrating-connecting rods rotate to the side faces of the end connecting plates, so that stop limiting is formed, the two end connecting plates are fixed into a whole through the penetrating-connecting rods, quick splicing of the two air duct bodies is completed, the operation of repeatedly assembling and disassembling a plurality of bolts is omitted, the splicing efficiency of the air duct bodies is effectively improved, and the overall mounting efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of building ventilation duct technology, specifically relating to a combined fire-resistant ventilation duct. Background Technology

[0002] Air ducts are the core component of ventilation and air conditioning systems, mainly used for conveying, distributing or exhausting air. They are widely used in construction, industry, medical and transportation fields. Depending on the material, air ducts can be divided into galvanized steel sheet, stainless steel, composite materials and flexible air ducts, each adapted to different environmental requirements, such as corrosion resistance, high temperature resistance or lightweight installation. Fire-resistant air ducts are made of some metal materials and have properties such as non-combustibility and pressure resistance.

[0003] When installing ductwork, it is necessary to assemble and connect the various duct units. In the existing technology, most adjacent duct units are connected by screws, and the connection points of each pipe are generally sealed with sealing rings. During assembly, multiple screws need to be repeatedly installed on the connecting flanges of the ductwork. The duct splicing operation is cumbersome and inconvenient, which affects the efficiency of the overall assembly operation.

[0004] Therefore, a modular fire-resistant duct is needed to solve the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this invention is to provide a combined fire-resistant air duct to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A modular fire-resistant duct includes a duct body, with end plates fixed at both ends of the duct body. Rubber pads are fixedly attached to the sides of the end plates. The end plates are provided with a plug-in assembly for connecting two duct bodies. The plug-in assembly includes a first insertion hole on the side of the end plate at one end of the duct body. There are four first insertion holes, which are symmetrically distributed at the four corners of the end plates. A connecting rod for connecting two end plates is slidably inserted into the first insertion hole.

[0008] It should be noted in the solution that the end plate on the other end of the duct body has a second insertion hole that is compatible with the insertion of the connecting rod. One end of the connecting rod is fixed with a stop protrusion, and the side of the end plate is provided with a through groove that is compatible with the insertion of the stop protrusion.

[0009] It is worth noting that the side of the end plate is provided with a positioning groove that fits properly with the stop protrusion.

[0010] It should be further noted that an end plate is fixed on the end of the connecting rod away from the stop protrusion.

[0011] Preferably, a spring is fitted on the side of the connecting rod, and the two ends of the spring are fixed to the side of the end plate and the side of the end plate, respectively.

[0012] Preferably, the side of the end plate is provided with a plurality of protruding ribs arranged in a ring.

[0013] Preferably, a rubber sheet is attached and fixed to the side of the stop protrusion.

[0014] Compared with the prior art, the combined fire-resistant air duct provided by this utility model has at least the following beneficial effects:

[0015] When splicing two duct bodies, the end plates on one end of the two duct bodies are aligned, and the two end plates are sealed with rubber gaskets. The connecting rods at the four corners of one end plate are inserted into the second insertion holes on the other end plate. At the same time, the stop protrusions pass through the through grooves, causing the stop protrusions on the end of the connecting rods to move to the other side of the other end plate. By rotating the connecting rods, the stop protrusions on the connecting rods rotate to the side of the end plate, thus forming a stop limit. This allows the connecting rods to fix the two end plates into one piece, thereby completing the rapid assembly of the two duct bodies. This eliminates the need for repeated installation and removal of multiple bolts, effectively improving the splicing efficiency of the duct bodies and the overall installation efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0017] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0018] Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point B;

[0020] Figure 5 This is a partial structural diagram of the plug-in assembly of this utility model. Figure 1 ;

[0021] Figure 6 This is a partial structural diagram of the plug-in assembly of this utility model. Figure 2 .

[0022] In the picture:

[0023] 1. Plug-in assembly; 101. Through rod; 102. Stop protrusion; 103. Rubber sheet; 104. End plate; 105. Rib; 106. Through groove; 107. Positioning groove; 108. Spring; 109. First insertion hole; 110. Second insertion hole; 2. Duct body; 3. End plate; 4. Rubber pad. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Please see Figure 1-6 This utility model provides a combined fire-resistant air duct, including an air duct body 2, with end plates 3 fixed at both ends of the air duct body 2. Rubber pads 4 are attached and fixed to the side of the end plates 3. The end plates 3 are provided with a plug-in assembly 1 for connecting two air duct bodies 2. The plug-in assembly 1 includes a first insertion hole 109 opened on the side of the end plate 3 at one end of the air duct body 2. There are four first insertion holes 109, and the four first insertion holes 109 are symmetrically distributed at the four corners of the end plates 3. A connecting rod 101 for connecting two end plates 3 is slidably inserted into the first insertion hole 109.

[0026] Further as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, it is worth noting that the end plate 3 on the other end of the duct body 2 has a second insertion hole 110 that mates with the through rod 101. A stop protrusion 102 is fixed on one end of the through rod 101, and a through groove 106 that mates with the stop protrusion 102 is provided on the side of the end plate 3. When splicing two duct bodies 2, the end plates 3 on one end of the two duct bodies 2 are aligned, and the two end plates 3 are sealed by the rubber gasket 4. The through rod 101 at the four corners of one end plate 3 is inserted into the other end plate. In the second insertion hole 110 on plate 3, the stop protrusion 102 passes through the through groove 106, so that the stop protrusion 102 on the end of the connecting rod 101 moves to the other side of the other end plate 3, and the connecting rod 101 is rotated, so that the stop protrusion 102 on the connecting rod 101 rotates to the side of the end plate 3, thereby forming a stop limit, so that the connecting rod 101 fixes the two end plates 3 into one piece, thereby completing the rapid assembly of the two duct bodies 2, eliminating the need for repeated installation and removal of multiple bolts, effectively improving the splicing efficiency of the duct body 2, and improving the overall installation efficiency.

[0027] Further as Figure 4 , Figure 5 and Figure 6As shown, it is worth noting that the side of the end plate 3 is provided with a positioning groove 107 that fits properly with the stop protrusion 102. In actual operation, when the stop protrusion 102 passes through the through groove 106, when the connecting rod 101 is rotated, the stop protrusion 102 on the end of the connecting rod 101 is engaged in the positioning groove 107, thereby improving the stability of the position of the stop protrusion 102 and improving the stability of the splicing and installation of the two air duct bodies 2.

[0028] Further as Figure 2 and Figure 6 As shown, it is worth noting that an end plate 104 is fixed on the end of the connecting rod 101 away from the stop protrusion 102. In actual operation, the end plate 104 facilitates the pulling of the connecting rod 101, making it easy to insert and remove the connecting rod 101, and further improving the splicing convenience of the duct body 2.

[0029] Further as Figure 2 As shown, it is worth noting that a spring 108 is sleeved on the side of the connecting rod 101, and the two ends of the spring 108 are fixed to the side of the end plate 3 and the side of the end plate 104, respectively. In actual operation, after the two duct bodies 2 are spliced, the spring 108 presses the end plate 104 in the opposite direction, so that the stop protrusion 102 on the end of the connecting rod 101 is tightly attached to the side of the end plate 3, further improving the stability of the splicing installation of the two duct bodies 2.

[0030] This solution has the following working process: When splicing two duct bodies 2, the end plates 3 on one end of the two duct bodies 2 are aligned, and the two end plates 3 are sealed by the rubber pads 4. The connecting rods 101 at the four corners of one end plate 3 are inserted into the second insertion holes 110 on the other end plate 3. At the same time, the stop protrusions 102 pass through the through grooves 106, so that the stop protrusions 102 at the end of the connecting rods 101 move to the other side of the other end plate 3. The connecting rods 101 are rotated so that the stop protrusions 102 on the connecting rods 101 rotate to the side of the end plate 3, and the stop protrusions 102 at the end of the connecting rods 101 are engaged in the positioning grooves 107, thereby forming a stop limit and fixing the two end plates 3 into one piece with the connecting rods 101, thus completing the rapid assembly of the two duct bodies 2.

[0031] Further as Figure 6 As shown, it is worth noting that the end plate 104 has multiple ribs 105 arranged in a ring on its side.

[0032] Further as Figure 6As shown, it is worth noting that a rubber sheet 103 is attached and fixed to the side of the stop protrusion 102. In actual operation, the rubber sheet 103 reduces the wear between the stop protrusion 102 and the side of the end plate 3, thereby extending the service life of the stop protrusion 102.

[0033] In summary: By inserting the connecting rods 101 at the four corners of one end plate 3 into the second insertion holes 110 on the other end plate 3, while the stop protrusions 102 pass through the through slots 106, the stop protrusions 102 at the end of the connecting rods 101 move to the other side of the other end plate 3. Rotating the connecting rods 101 causes the stop protrusions 102 to rotate to the side of the end plate 3, thus forming a stop and limiting position. This allows the connecting rods 101 to fix the two end plates 3 into a single unit, thereby completing the rapid assembly of the two duct bodies 2. This eliminates the need for repeated installation and removal of multiple bolts, effectively improving the assembly efficiency of the duct bodies 2. High overall installation efficiency; when the stop protrusion 102 passes through the through groove 106, and the connecting rod 101 is rotated, the stop protrusion 102 on the end of the connecting rod 101 is engaged in the positioning groove 107, thereby improving the stability of the stop protrusion 102 and the stability of the splicing installation of the two duct bodies 2. The end plate 104 facilitates the pulling of the connecting rod 101, making it easy to insert and remove the connecting rod 101. After the two duct bodies 2 are spliced, the spring 108 presses the end plate 104 in the opposite direction, so that the stop protrusion 102 on the end of the connecting rod 101 is tightly attached to the side of the end plate 3, further improving the stability of the splicing installation of the two duct bodies 2.

Claims

1. A combined fire-resistant air duct, comprising an air duct body (2), characterized in that, Both ends of the duct body (2) are fixed with end plates (3). A rubber pad (4) is attached to the side of the end plate (3). The end plate (3) is provided with a plug assembly (1) for connecting the two duct bodies (2). The plug assembly (1) includes a first insertion hole (109) on the side of the end plate (3) at one end of the duct body (2). There are four first insertion holes (109), and the four first insertion holes (109) are symmetrically distributed at the four corners of the end plate (3). A connecting rod (101) for connecting the two end plates (3) is slidably inserted into the first insertion hole (109).

2. The combined fire-resistant air duct according to claim 1, characterized in that, The end plate (3) on the other end of the duct body (2) has a second insertion hole (110) that is compatible with the insertion rod (101). A stop protrusion (102) is fixed on one end of the insertion rod (101). A through groove (106) that is compatible with the stop protrusion (102) is opened on the side of the end plate (3).

3. A combined fire-resistant air duct according to claim 2, characterized in that, The side of the end plate (3) is provided with a positioning groove (107) that fits into the stop protrusion (102).

4. A combined fire-resistant air duct according to claim 2, characterized in that, An end plate (104) is fixed on the end of the connecting rod (101) away from the stop protrusion (102).

5. A combined fire-resistant air duct according to claim 4, characterized in that, A spring (108) is sleeved on the side of the connecting rod (101), and the two ends of the spring (108) are fixed to the side of the end plate (3) and the side of the end plate (104), respectively.

6. A combined fire-resistant air duct according to claim 5, characterized in that, The end plate (104) has multiple ribs (105) arranged in a ring on its side.

7. A combined fire-resistant air duct according to claim 2, characterized in that, A rubber sheet (103) is attached and fixed to the side of the stop protrusion (102).

Images