Compression-resistant stainless steel air pipe

Abstract

The utility model discloses a compression-resistant stainless steel air duct which comprises a plurality of air duct splicing units and connecting sleeves, each air duct splicing unit is of a hollow rectangular structure and comprises four side faces, each side face is provided with a plurality of reinforcing rings, and a plurality of first reinforcing ribs are arranged between every two adjacent reinforcing rings. Splicing surfaces are arranged at the two ends of each air pipe splicing unit, and a plurality of trapezoidal second reinforcing ribs are arranged between the splicing surfaces and the side surfaces; the connecting sleeve is composed of four hollow bent sections, the four bent sections can form a rectangular structure, the connecting sleeve is arranged on the outer side of the splicing face of every two adjacent air pipe splicing units in a sleeving mode, and clamping grooves are formed in the bent sections and can be clamped on the second reinforcing ribs. The multiple reinforcing rings and the first reinforcing ribs are arranged on the outer side face of the air pipe, so that the compression resistance of the air pipe can be effectively enhanced, and the air pipe is not prone to deformation; and the connecting sleeve is arranged at the closed splicing position, and the rubber sealing layer is arranged in the connecting sleeve, so that the water leakage rate is reduced, and the service life of the air pipe is prolonged.

Description

Technical Field

[0001] The utility model relates to an air duct, in particular to a compression-resistant stainless steel air duct. Background Art

[0002] At present, more and more buildings utilize underground spaces to set up underground buildings, such as basements, underground parking lots, etc. And underground buildings require good ventilation facilities to ensure sufficient air in the buildings. The most important component of the ventilation facilities is the ventilation duct. The ducts can be classified according to the cross-sectional shape: for example, circular ducts, rectangular ducts, oval ducts, etc.; they can also be classified according to the material: for example, metal ducts, composite ducts, polymer ducts, etc.

[0003] Among them, the square stainless steel ducts are widely used in various underground buildings. Since the ventilation ducts need to cover the entire underground building, considering performance and cost, most of the ducts adopt a splicing structure, that is, short ducts are spliced into long ducts, which not only reduces the production cost but also saves a large amount of transportation cost. However, the spliced ducts have high requirements for their own compressive strength, and leaks are also likely to occur at the splicing joints, causing potential safety hazards. Summary of the Utility Model

[0004] In order to solve the above problems, the utility model provides a compression-resistant stainless steel air duct with high compressive strength and not easy to leak at the splicing joints.

[0005] For this reason, the technical solution of the utility model is: a compression-resistant stainless steel air duct, including a plurality of air duct splicing units and a connecting sleeve. The air duct splicing unit is a hollow rectangular structure, including four sides, and a plurality of reinforcing rings are provided on each side, and a plurality of first reinforcing ribs are provided between adjacent reinforcing rings; the two ends of the air duct splicing unit are provided with splicing surfaces, and a plurality of trapezoidal second reinforcing ribs are provided between the splicing surfaces and the sides; the connecting sleeve is composed of four hollow bent sections, and the four bent sections can form a rectangular structure, which is sleeved outside the splicing surfaces of two adjacent air duct splicing units, and a clamping groove is provided on the bent section, which can be clamped on the second reinforcing rib.

[0006] On the basis of the above solution and as the preferred solution of the above solution: a rubber sealing layer is provided inside the connecting sleeve, which can be in interference fit with the splicing surfaces of two adjacent air duct splicing units.

[0007] On the basis of the above solution and as the preferred solution of the above solution: the reinforcing ring is a square structure, which is sleeved outside the air duct splicing unit, and the first reinforcing rib is perpendicular to the reinforcing ring and is welded and fixed.

[0008] On the basis of the above solution and as the preferred solution of the above solution: the connecting sleeve is successively divided into a first bent section, a second bent section, a third bent section and a fourth bent section. An insertion block is provided at the end of the first bent section, and a slot is provided at the end of the fourth bent section. The insertion block and the slot are cooperatively fixed.

[0009] On the basis of the above solution and as a preferred solution of the above solution: through holes are provided on both the insertion block and the insertion slot, and bolts pass through the insertion block, the insertion slot and the assembly holes on the two mating surfaces to lock and fix the connecting sleeve with two adjacent duct splicing units.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows: multiple reinforcing rings and first reinforcing ribs are arranged on the outer side surface of the duct, which can effectively enhance the compressive performance of the duct, making the duct not easily deformed; a second reinforcing rib is arranged between the mating surface and the side surface at the end of the duct to enhance the strength of the mating surface; a connecting sleeve is sleeved at the splicing part of the duct, the connecting sleeve is used to enclose the splicing part, and a rubber sealing layer is arranged in the connecting sleeve, which is in interference fit with the splicing part, greatly reducing the water leakage rate and improving the service life of the duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present utility model;

[0012] Figure 2 is a schematic diagram of the mating of adjacent duct splicing units of the present utility model;

[0013] Figure 3 is an installation schematic diagram of adjacent duct splicing units and a connecting sleeve of the present utility model;

[0014] Figure 4 is a schematic structural diagram of the connecting sleeve of the present utility model;

[0015] Figure 5 is an unfolded schematic diagram of the connecting sleeve of the present utility model.

[0016] The marks in the figure are: duct splicing unit 1, side surface 11, mating surface 12, reinforcing ring 13, first reinforcing rib 14, second reinforcing rib 15, assembly hole 16, connecting sleeve 2, bending section 21, card slot 22, insertion block 23, insertion slot 24, through hole 25, rubber sealing layer 26. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In the description of the present utility model, it should be noted that for orientation terms, if there are terms such as "center", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and position relationships indicated are based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of the present utility model.

[0018] In addition, terms such as "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, the meanings of "several" and "a number of" are two or more, unless otherwise specifically defined.

[0019] Refer to the attached drawings. The anti-pressure stainless steel air duct described in this embodiment includes a number of air duct splicing units 1 and connection sleeves 2. The air duct splicing unit 1 is a hollow rectangular structure, including four side faces 11 and fitting faces 12 at both ends. A number of reinforcing rings 13 are provided on each side face 11. The reinforcing ring 13 is a square structure and is sleeved outside the air duct splicing unit 1. A number of first reinforcing ribs 14 are provided between adjacent reinforcing rings 13. The first reinforcing ribs 14 are perpendicular to the reinforcing ring 13 and are welded and fixed. A number of trapezoidal second reinforcing ribs 15 are provided between the fitting face 12 and the side face 11 to increase the strength of the fitting face, and an assembly hole 16 is provided on the fitting face, through which bolts can be used for locking and fixing.

[0020] The connection sleeve 2 is composed of four hollow bent sections 21, and the four bent sections can form a rectangular structure and are sleeved outside the fitting faces of two adjacent air duct splicing units 1. A clamping groove 22 is provided on the bent section 21. When the bent section 21 is sleeved on the fitting face 12, the clamping groove 22 can be clamped on the second reinforcing rib 15 to prevent the two from interfering with each other.

[0021] The connection sleeve 2 is successively divided into a first bent section, a second bent section, a third bent section and a fourth bent section. An insertion block 23 is provided at the end of the first bent section, and a slot 24 is provided at the end of the fourth bent section. The insertion block 23 and the slot 24 are cooperatively fixed. Through holes 25 are provided on both the insertion block 23 and the slot 24. Bolts pass through the insertion block 23, the slot 24 and one of the assembly holes on the two fitting faces 12 to lock and fix the connection sleeve 2 and two adjacent air duct splicing units 1.

[0022] A rubber sealing layer 26 is provided inside the connection sleeve 2, which can be in interference fit with the fitting faces 12 of two adjacent air duct splicing units 1. The rubber sealing layer 26 has a certain elasticity and can firmly block the splicing part during interference fit, greatly reducing the water leakage rate and improving the service life of the air duct.

[0023] During installation, align the mating surfaces 12 of two adjacent duct splicing units 1, and lock multiple assembly holes with bolts, leaving the assembly holes that need to be connected to the connecting sleeve empty for later use; unfold the connecting sleeve 2, and respectively sleeve the four bending segments 21 on the four sides of the mating surface 12. Then, insert the insertion block 23 at the end of the first bending segment into the slot 24 at the end of the fourth bending segment, and pass the bolt through the insertion block, the slot, and one of the assembly holes on the two mating surfaces to lock and fix the connecting sleeve 2 to the two adjacent duct splicing units 2, thus completing the splicing work of the duct.

[0024] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A pressure-resistant stainless steel air duct, characterized in that: It comprises a plurality of air duct splicing units and a connecting sleeve. The air duct splicing unit is a hollow rectangular structure and comprises four side surfaces. Each side surface is provided with a plurality of reinforcing rings, and a plurality of first reinforcing ribs are provided between adjacent reinforcing rings. Splicing surfaces are provided at both ends of the air duct splicing unit, and a plurality of trapezoidal second reinforcing ribs are provided between the splicing surfaces and the side surfaces. The connecting sleeve is composed of four hollow bending sections, and the four bending sections can form a rectangular structure, which is sleeved on the outer side of the splicing surfaces of two adjacent air duct splicing units. A card slot is provided on the bending section, which can be clamped on the second reinforcing rib.

2. A pressure-resistant stainless steel air duct as claimed in claim 1, characterized in that: The connection sleeve is provided with a rubber sealing layer inside, which can be interference-fitted with the joint surfaces of two adjacent air duct joint units.

3. The pressure-resistant stainless steel air duct according to claim 1, characterized in that: The reinforcement ring is a square structure and is sleeved on the outside of the air duct splicing unit. The first reinforcement rib is perpendicular to the reinforcement ring and is welded and fixed.

4. The pressure-resistant stainless steel air duct according to claim 1, characterized in that: The connecting sleeve is divided into a first bending section, a second bending section, a third bending section and a fourth bending section in sequence. An insert block is provided at the end of the first bending section, and a slot is provided at the end of the fourth bending section. The insert block is fixed in cooperation with the slot.

5. The pressure-resistant stainless steel air duct according to claim 4, characterized in that: The insert block and the slot are both provided with through holes, and bolts pass through the insert block, the slot and the assembly holes on the two joint surfaces to lock and fix the connecting sleeve and the two adjacent air duct joint units.

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