Fabricated fireproof air duct

Abstract

The utility model relates to an assembly type fireproof air pipe which comprises a pipe body and a flange, the flange comprises a circle of insertion opening facing the inner side, an outward flange end face and a C-shaped insertion opening extending backwards from the outer side of the flange end face, and the end of the pipe body is inserted into the insertion opening and connected with the outer side wall of the insertion opening in a penetrating mode through a bolt to be perpendicular to the pipe body to be locked and connected with the pipe body. The end faces of the flanges are provided with more than one circle of crimping grooves and / or press ribs surrounding the peripheries of the flanges, the end faces of the flanges of every two adjacent assembly type fireproof air pipes are crimped through heat insulation sealing rings, and the C-shaped insertion openings of every two adjacent assembly type fireproof air pipes abut against each other in a back-to-back mode and are inserted and tensioned through two C-shaped insertion heads with the two sides of an insertion strip facing inwards in the opposite directions. The connecting structure is compact, it can be effectively guaranteed that the air pipes are sequentially and stably connected in a butt joint mode, and meanwhile the air pipe body plate face strength is considered.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air pipe, specifically to an assembled fireproof air pipe. BACKGROUND

[0002] With the continuous improvement of air pipe construction structure, requirements, simple cement fireproof plate, glass magnesium plate has certain heat preservation, fireproof performance, but the quality of the common problem of heavy, poor fire resistance, has not adapted to the requirements of the air pipe fireproof insulation plate light, fire resistance of today's construction industry, while the connection of traditional air pipe, the interface seam of air pipe butt joint is wrapped with reinforcement and packaged, which needs high-altitude operation on site, is inconvenient to operate, and the external parts of the air pipe structure affect the use and appearance. The existing structure of the assembled fireproof, smoke exhaust and other air pipes, such as the smoke exhaust air pipe of the applicant's prior patent 20222015959.5, has realized the assembly structure, but the assembly of the two adjacent air pipes only relies on the metal flange butt joint and the bolt penetration, which has the hidden danger of loosening under the long-term use of air supply impact vibration environment, and the loosening of the bolt locking structure is not easy to detect, which easily leads to the problem of long-term loosening and cannot be found, affecting the safe and efficient air supply. In addition, for the hollow air pipe, the side of the pipe is a pipe plate, which is easy to cause bulging or concave quality problems under the influence of heat during fire prevention, affecting the use and appearance. SUMMARY

[0003] In view of the above problems, the utility model provides an assembled fireproof air pipe with compact and stable connection structure, and considers the strength of the pipe body plate surface.

[0004] The technical scheme adopted by the utility model is: an assembled fireproof air pipe, including a pipe body and a flange, characterized by: the flange includes a circle of inward socket, an outward flange end face and a C-shaped socket extended from the outer side of the flange end face to the back, the end part of the pipe body is inserted into the socket and locked and connected with the pipe body by the bolt penetration of the socket outer side wall perpendicular to the pipe body, a circle of pressure connection groove and / or pressure machine convex rib is arranged on the flange end face, the flange end faces of the two adjacent assembled fireproof air pipes are pressed by the heat insulation sealing ring, and the C-shaped sockets of the two adjacent assembled fireproof air pipes are opposite and abutted and inserted and pulled tight by the two C-shaped plugs on both sides of the one insertion strip.

[0005] The pipe body comprises four fireproof and heat insulation plates, two adjacent fireproof and heat insulation plates are connected by a ''cang'' type connector, the ''cang'' type connector is composed of a horizontal clamping hole and a vertical clamping hole, the horizontally arranged fireproof and heat insulation plate among the two adjacent fireproof and heat insulation plates is clamped between the upper side and the lower side of the clamping hole of the horizontal clamping hole and is locked and connected by a bolt penetrating through the upper side of the clamping hole, the vertically arranged fireproof and heat insulation plate among the two adjacent fireproof and heat insulation plates is clamped between the inner side and the outer side of the clamping hole of the vertical clamping hole and is locked and connected by a bolt penetrating through the outer side of the clamping hole, the lower side of the clamping hole of the horizontal clamping hole and the upper bottom side of the clamping hole of the vertical clamping hole are shared, and the outer bottom side of the clamping hole of the horizontal clamping hole and the outer side of the clamping hole of the vertical clamping hole are connected in a straight line.

[0006] The fireproof and heat insulation plate comprises, from inside to outside, a metal layer, an inorganic fireproof layer, an inorganic heat insulation layer, an inorganic fireproof layer, an inorganic heat insulation layer and an inorganic fireproof layer.

[0007] The fireproof and heat insulation plate comprises, from inside to outside, a metal aluminum protection layer, an inorganic fireproof layer, an inorganic heat preservation layer, an inorganic fireproof layer and a metal layer.

[0008] The metal layer is a galvanized iron sheet.

[0009] The inorganic heat insulation layer or the inorganic heat preservation layer is a rock wool layer.

[0010] The inorganic fireproof layer is a light mineral fireproof layer.

[0011] The heat insulation sealing ring is an aluminum silicate fiber cotton layer.

[0012] One or more than one support rod is arranged between the upper wall and the lower wall in the height direction of the pipe body, and the support rod is arranged in an array in the front-rear and left-right directions in the pipe body.

[0013] The support rod is a lead screw, the lead screw is screwed through the upper wall and the lower wall of the pipe body, the support rod is pressed and connected to the outer wall of the pipe body by a thread-tightening block.

[0014] The C-shaped plug is provided with two connecting plates on the outer side of the front and back, respectively, the two connecting plates are locked and connected to the outer side of the flanges of two adjacent assembled fireproof air pipes by bolts, and the opposite plug end faces of the C-shaped sockets of the two adjacent assembled fireproof air pipes are connected by bolts.

[0015] The utility model discloses the beneficial effect is:

[0016] 1. A flange end face is provided with one or more than one circumferential crimping groove and / or crimping rib around the flange, and when the two assembled fireproof air pipes are butt-jointed, the sealing ring structure of the aluminum silicate fiber cotton layer between the flange end faces is helpful to improve the sealing property.

[0017] 2. The C-shaped sockets facing outwards of the flanges are butt-connected back to back and locked by bolts, and the C-shaped plugs of an inserting strip are tightened towards the inside, which helps to ensure the stable firmness of the connection. Moreover, with these two tightening methods, it is not easy to loosen. Even when the bolts loosen, there is still the C-shaped plug on the outside to tighten. If the external C-shaped plug loosens, it can be manually pulled and tested under the whole air duct, and the tightening degree can be directly obtained, effectively strengthening the connection strength between two prefabricated air ducts and facilitating monitoring.

[0018] 3. Tighten the supporting pipes in the tensioning array in the height direction of the pipe body, effectively ensuring the strength of the overall pipe body structure and preventing heat deformation in the height direction, which may affect the quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural view of the present utility model;

[0020] Figure 2 is Figure 1 a schematic assembly view of two adjacent pipe plates in the A-A cross-section in

[0021] Figure 3 is a schematic structural view of the "jin"-shaped connecting piece;

[0022] Figure 4 is Figure 1 a schematic structural view of the B-B cross-section in

[0023] Figure 5 is a schematic structural view of the fireproof and heat-insulating board of the present utility model;

[0024] Figure 6 is a schematic structural view of the butt joint of the flanges of two prefabricated fire dampers and air ducts.

[0025] In the figure: pipe body 1, fireproof and heat-insulating board 2, metal layer 21, inorganic fireproof layer 22, inorganic heat-insulating layer 23, "jin"-shaped connecting piece 3, transverse bayonet 4, upper side edge 41, lower side edge 42, outer bottom edge 43, vertical bayonet 5, inner side edge 51, outer side edge 52, upper bottom edge 53, metal flange 6, socket 61, flange end face 62, crimping groove 63, C-shaped socket 64, connecting plate 65, inserting strip 7, C-shaped plugging 71, bolt 8, support rod 9, tensioning block 10, aluminum silicate fiber cotton layer 11. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following is further described in conjunction with the drawings and embodiments.

[0027] Figures 1-6As shown: A prefabricated fireproof air duct, the duct body 1 includes four fireproof and heat-insulating plates 2, "Jin"-shaped connectors 3, and metal flanges 6. The fireproof and heat-insulating plates 2, from the inside out, are a metal layer 21, an inorganic fireproof layer 22, an inorganic heat-insulating layer 23, an inorganic fireproof layer, an inorganic heat-insulating layer, and an inorganic fireproof layer. The four fireproof and heat-insulating plates 2 are connected circumferentially. Two adjacent fireproof and heat-insulating plates 2 are snapped together by the "Jin"-shaped connectors 3. The "Jin"-shaped connectors 3 consist of a horizontal snap 4 and a vertical snap 5. The fireproof and heat-insulating plates 2 arranged horizontally in the two adjacent fireproof and heat-insulating plates 2 are engaged between the upper and lower sides 41 and 42 of the horizontal latch 4 and locked together by bolts passing through the upper side of the latch. The fireproof and heat-insulating plates 2 arranged vertically in the two adjacent fireproof and heat-insulating plates 2 are engaged between the inner and outer sides 51 and 52 of the vertical latch 5 and locked together by bolts passing through the outer side of the latch. The lower side 42 of the horizontal latch and the upper bottom side 53 of the vertical latch are connected. The horizontal bayonet's outer bottom edge 43 and the vertical bayonet's outer outer edge 52 are aligned and connected. Metal flanges 6 are installed at both the front and rear ends of the pipe body 1. The end of the pipe body 1 is inserted into the inlet 61 of the metal flange 6, and bolts are used to connect the pipe body by locking the outer wall of the inlet perpendicular to the pipe body. The flange end face 62 of the metal flange 6 has one or more circumferential pressing grooves 63. The flange end faces of two adjacent prefabricated fireproof air ducts are connected by a layer of aluminum silicate fiber cotton. 11. Crimping: A C-shaped socket 64 extends outward from the flange end face 62 of the metal flange 6. The outer end of the C-shaped socket 64 is lower than the outer side of the metal flange 6. The C-shaped sockets 64 of two adjacent prefabricated fireproof air ducts abut against each other and are tightened by two C-shaped plugs 71 on both sides of a plug strip 7 that face inward. Two connecting plates 65 are respectively connected to the outer side of the C-shaped plug 64. The two connecting plates 65 are bolted to the outer side of the metal flanges of the two adjacent prefabricated fireproof air ducts.

[0028] In this embodiment, the C-type sockets 64 of two adjacent prefabricated fireproof air ducts are opposite to each other and are locked together by bolts 8.

[0029] In this embodiment: the metal layer is 0.75mm thick, the inorganic fireproof layer is 10mm thick, the inorganic heat insulation layer is 20mm thick, and the inorganic fireproof layer is 5mm thick. The metal layer is made of galvanized iron sheet, the inorganic heat insulation layer is a rock wool layer, and the inorganic fireproof layer is a lightweight mineral refractory layer.

[0030] Based on this embodiment, multiple support rods 9 arranged in an array in the front-back and left-right directions of the pipe body 1 can be pulled along the height direction of the pipe body 1. The support rods 9 can be set as threaded rods and pass through the upper and lower fireproof and heat insulation plates 2 and are screwed and tightened by the tensioning block 10.

[0031] Based on this embodiment, the fireproof and heat-insulating board can also be configured from the inside out as a metal aluminum protective layer, an inorganic fireproof layer, an inorganic heat insulation layer, an inorganic fireproof layer, and a metal layer, so that the air duct can meet the requirements of heat preservation and heat insulation.

[0032] In order to further improve the performance of the duct, the "jin" type connector is designed as stainless steel.

Claims

1. A fabricated fireproof air duct comprising a duct body and flanges, characterized in that: The flange comprises a ring of inwardly directed sockets, an outwardly directed flange end face and a C-shaped socket extending rearwardly from the outside of the flange end face, the end of the pipe body is inserted into the socket and locked by bolts penetrating the socket wall perpendicularly to the pipe body, a plurality of circumferentially distributed pressing grooves and / or pressing ribs are arranged on the flange end face, the flange end faces of two adjacent assembled fire-resistant air ducts are pressed by a heat-insulating sealing ring, and the C-shaped sockets of the two adjacent assembled fire-resistant air ducts are inserted and pulled tightly by two C-shaped plugs on both sides of a plug strip.

2. An assembled fireproof air duct according to claim 1, characterized in that: The pipe body comprises four fireproof heat insulation plates, the four fireproof heat insulation plates are circumferentially arranged, and two adjacent fireproof heat insulation plates are connected by a "copper" type connector, the "copper" type connector comprises a horizontal slot and a vertical slot, the horizontally arranged fireproof heat insulation plate among the two adjacent fireproof heat insulation plates is connected and locked by bolts penetrating the upper side of the horizontal slot, the vertically arranged fireproof heat insulation plate among the two adjacent fireproof heat insulation plates is connected and locked by bolts penetrating the outer side of the vertical slot, the lower side of the horizontal slot is shared with the upper bottom of the vertical slot, and the outer bottom of the horizontal slot is connected in line with the outer side of the vertical slot.

3. An assembled fireproof air duct according to claim 2, characterized in that: The fireproof heat insulation plate comprises, from inside to outside, a metal layer, an inorganic fireproof layer, an inorganic heat insulation layer, an inorganic fireproof layer, an inorganic heat insulation layer, and an inorganic fireproof layer; or the fireproof heat insulation plate comprises, from inside to outside, a metal aluminum protective layer, an inorganic fireproof layer, an inorganic heat insulation layer, an inorganic fireproof layer, and a metal layer.

4. An assembled fireproof air duct according to claim 3, characterized in that: The metal layer is a galvanized iron sheet.

5. An assembled fireproof air duct according to claim 3, characterized in that: The inorganic heat insulation layer or the inorganic heat insulation layer is a rock wool layer.

6. An assembled fireproof air duct according to claim 3, characterized in that: The inorganic fireproof layer is a lightweight mineral fireproof layer.

7. An assembled fireproof air duct according to claim 1, characterized in that: The heat-insulating sealing ring is an aluminum silicate fiber cotton layer.

8. An assembled fireproof air duct according to claim 1, characterized in that: One or more support rods are arranged between the upper and lower walls in the height direction of the pipe body, and the support rods are arranged in front and back and left and right directions in the pipe body.

9. An assembled fireproof air duct according to claim 8, characterized in that: The support rod is a screw rod, the screw rod is screwed through the upper and lower walls of the pipe body, and the support rod is screwed and pulled tightly on the outer wall of the pipe body.

10. The prefabricated fireproof air duct according to claim 1, characterized in that: The C-shaped plug is connected to two connecting plates on the outer side of the flange, the two connecting plates are connected and locked by bolts penetrating the flange outer side of the two adjacent assembled fire-resistant air ducts, and the opposite socket end faces of the C-shaped sockets of the two adjacent assembled fire-resistant air ducts are connected and locked by bolts.

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