Steel fire-resistant ventilating duct

Abstract

The utility model discloses a steel fire-resistant ventilating duct, which relates to the technical field of ventilating ducts, and comprises a first [-shaped shell and a second [-shaped shell positioned below the first [-shaped shell, a first connecting part is arranged on the side wall of the joint of the first [-shaped shell and the second [-shaped shell, and a second connecting part is arranged on the side wall of the joint of the second [-shaped shell and the first connecting part. The first connecting part comprises a first L-shaped support, a second L-shaped support and a first matching block, the first L-shaped support and the side wall of the first [-shaped shell form a first containing groove with an upward opening, and the second L-shaped support is fixedly installed on the side face of the second [-shaped shell; the first L-shaped support and the side wall of the second n-shaped shell form a first containing groove with an opening facing downwards, the second L-shaped support and the side wall of the second n-shaped shell form a second containing groove with an opening facing downwards, the first matching block is inserted into the first containing groove and the second containing groove, the upper n-shaped shell and the lower n-shaped shell are clamped and fastened through the first matching block, and then only the first matching block needs to be inserted into the two containing grooves. And subsequently, the two [-shaped shells are connected in a clamping manner, and can be disassembled and assembled without a tool.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilation ducts, in particular to a steel fire-resistant ventilation duct. Background Art

[0002] A ventilation duct is a metal or composite duct used in the ventilation and air conditioning projects of industrial and civil buildings, and is a municipal infrastructure for air circulation and reduction of harmful gas concentration. Ventilation ducts are generally classified into circular and rectangular shapes according to their shapes.

[0003] Existing ventilation ducts are all of an integral through-duct structure. During actual installation and transportation, the existing ventilation ducts are large in volume, occupy a large space area during transportation, resulting in a reduction in transportation volume, and are prone to deformation or damage during transportation. When installing, a variety of tools are required to connect the ventilation ducts, which is time-consuming and laborious to disassemble, causing inconvenience in use. Summary of the Utility Model

[0004] Based on this, in view of the problem of inconvenient disassembly and assembly, it is necessary to provide a steel fire-resistant ventilation duct that can improve the overall installation efficiency.

[0005] A steel fire-resistant ventilation duct includes a first C-shaped housing. A second C-shaped housing is detachably connected below the first C-shaped housing. A first connecting component is provided on the side wall at the connection of the first C-shaped housing and the second C-shaped housing. The first connecting component includes a first L-shaped bracket, a second L-shaped bracket, and a first fitting block. The first L-shaped bracket is fixedly installed on the side of the first C-shaped housing. The first L-shaped bracket and the side wall of the first C-shaped housing form a first receiving groove with an upward opening. The second L-shaped bracket is fixedly installed on the side of the second C-shaped housing. The second L-shaped bracket and the side wall of the second C-shaped housing form a second receiving groove with a downward opening. The first fitting block is inserted into the first receiving groove and the second receiving groove. The first fitting block is used for centering and clamping the first C-shaped housing and the second C-shaped housing.

[0006] As a preferred solution, the second C-shaped housing has a first convex block, and a first groove matching the first convex block is provided on the first C-shaped housing. Both the first groove and the first convex block are located between the first C-shaped housing and the second C-shaped housing.

[0007] As a preferred solution, after the first C-shaped housing and the second C-shaped housing are connected, a rectangular ventilation duct is formed. A first square ring is provided at one end of each rectangular ventilation duct, and a second square ring is provided at the other end of each rectangular ventilation duct. The second square ring of the previous rectangular ventilation duct is sleeved on the adjacent first square ring.

[0008] As a preferred solution, a first coaxial hole is provided on the second square ring, and a first threaded hole with the same axis as the first coaxial hole is provided on the first square ring.

[0009] As a preferred solution, a second connecting component for cooperating with the first connecting component is provided on the side wall at the connection of the first C-shaped housing and the second C-shaped housing, and the second connecting component is used to adjust the gap between the first C-shaped housing and the second C-shaped housing.

[0010] As a preferred solution, the second connecting component includes a first mounting seat, a first connecting shaft, a threaded shaft, a second mounting seat and a knob. The first mounting seat is fixedly connected to the side wall of the second C-shaped housing, the second mounting seat is fixedly connected to the side wall of the first C-shaped housing, the first connecting shaft is rotatably connected inside the first mounting seat, the threaded shaft is vertically installed on the first connecting shaft, the knob is sleeved at the end of the threaded shaft, and the threaded shaft is threadedly connected to the knob.

[0011] As a preferred solution, a stop block is fixedly installed at the end of the threaded shaft, and the knob is located between the stop block and the first connecting shaft.

[0012] As a preferred solution, a suspension plate is installed at the bottom of the second C-shaped housing, and a second through hole is provided on the suspension plate.

[0013] The beneficial effects of the present utility model are as follows:

[0014] It is composed of two C-shaped housings spliced up and down, which occupies a relatively small area during transportation, and it is relatively easy to transfer the housing subsequently compared to transferring the whole. The two are clamped and fastened by the first fitting block. Subsequently, only the first fitting block needs to be inserted into the two receiving grooves, and then the two C-shaped housings are connected in a snap-fit manner, which can be disassembled and assembled without tools. A second connecting component is also designed to buckle and fasten the two C-shaped housings together, which is more convenient for the first fitting block to be inserted into the two receiving grooves to achieve double positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure;

[0016] Figure 2 is a schematic diagram of the structure of the second connecting component;

[0017] Figure 3 is Figure 1 the enlarged schematic diagram at A in

[0018] Icon: 1. First C-shaped housing; 101. First groove; 2. Second C-shaped housing; 201. First convex block; 3. First square ring; 301. First threaded hole; 4. Second square ring; 401. First coaxial hole; 5. Hanging plate; 501. Second through hole; 6. First connecting component; 61. First L-shaped bracket; 62. Second L-shaped bracket; 63. First mating block; 7. Second connecting component; 71. First mounting seat; 72. First connecting shaft; 73. Threaded shaft; 74. Second mounting seat; 75. Knob; 76. Stopper. Detailed implementation mode

[0019] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the following will describe the detailed implementation mode of the present utility model in conjunction with the attached drawings. Many specific details are elaborated in the following description to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein. Those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0020] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation mode.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model in this specification are only for the purpose of describing specific implementation modes and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0022] As Figure 1-Figure 3 shown,

[0023] As an optional embodiment,

[0024] A steel refractory ventilation duct, comprising a first C-shaped housing 1. A second C-shaped housing 2 is detachably connected below the first C-shaped housing 1. A first connecting component 6 is provided on the side wall at the connection of the first C-shaped housing 1 and the second C-shaped housing 2. The first connecting component 6 includes a first L-shaped bracket 61, a second L-shaped bracket 62 and a first fitting block 63. The first L-shaped bracket 61 is fixedly installed on the side of the first C-shaped housing 1. The first L-shaped bracket 61 and the side wall of the first C-shaped housing 1 form a first receiving groove with an upward opening. The second L-shaped bracket 62 is fixedly installed on the side of the second C-shaped housing 2. The second L-shaped bracket 62 and the side wall of the second C-shaped housing 2 form a second receiving groove with a downward opening. The first fitting block 63 is inserted into the first receiving groove and the second receiving groove. The first fitting block 63 is used for centering and clamping the first C-shaped housing 1 and the second C-shaped housing 2.

[0025] Among them, the upper and lower C-shaped housings are connected to form a rectangular ventilation duct. Regarding the upper and lower C-shaped housings, they are the first C-shaped housing 1 and the second C-shaped housing 2 respectively. The first C-shaped housing 1 and the second C-shaped housing 2 are connected together through the first connecting component 6. Subsequently, the upper and lower C-shaped housings can be disassembled and assembled by operating the first connecting component 6, so as to improve the convenience of subsequent assembly. The subsequent handling is also relatively labor-saving, and there is no need to carry this duct. Regarding the specific structure of the first connecting part, during subsequent use, after the first L-shaped bracket 61 is installed on the side of the first C-shaped housing 1, a first receiving groove is formed with its outer wall. After the second L-shaped bracket 62 is installed on the side of the second C-shaped housing, a second receiving groove is formed with its outer wall. The top end of the first fitting block 63 is inserted into the first receiving groove, and the top and bottom ends of the first fitting block 63 are inserted into the second receiving groove. The upper and lower C-shaped housings are clamped tightly through the first fitting block 63. Subsequently, only the first fitting block 63 needs to be inserted into the two receiving grooves.

[0026] On the basis of Embodiment 1, as Figure 1-Figure 3 shown:

[0027] In order to further lock the upper and lower C-shaped housings so that the connection between the two will not be misaligned or offset during installation, the following structure is designed;

[0028] The second C-shaped housing 2 has a first convex block 201. A first groove 101 is opened on the first C-shaped housing 1 and is matched with the first convex block 201. Both the first groove 101 and the first convex block 201 are located between the first C-shaped housing 1 and the second C-shaped housing 2. Subsequently, by inserting the first convex block 201 into the first groove 101, the up and down limits can be completed, and the front and back limits can also be completed. In addition, the contact area between the two can be increased, and the sealing performance can be further enhanced.

[0029] In an environment with a relatively large space, multiple exhaust ducts need to be connected in sequence. In order to improve the convenience of connection between two adjacent exhaust ducts before and after, specific connection structures are arranged at the inlets and outlets of each exhaust duct:

[0030] After the first C-shaped housing 1 and the second C-shaped housing 2 are connected, a rectangular ventilation duct is formed. A first square ring 3 is provided at one end of each rectangular ventilation duct, and a second square ring 4 is provided at the other end of each rectangular ventilation duct. The second square ring 4 of the previous rectangular ventilation duct is sleeved on the adjacent first square ring 3, and subsequently, the second square ring 4 of the previous rectangular ventilation duct is inserted into the first square ring 3 of the next rectangular ventilation duct. In this way, two adjacent rectangular ventilation ducts before and after are connected in series, realizing the adjustable length of the ventilation duct for long-distance ventilation and air exchange.

[0031] As Figure 1 shown, regarding the connection in series of two adjacent rectangular ventilation ducts before and after, the following specific connection structure is designed:

[0032] A first coaxial hole 401 is opened on the second square ring 4, and a first threaded hole 301 with the same axis as the first coaxial hole 401 is opened on the first square ring 3. Subsequently, a fastener is passed through the first coaxial hole 401 and screwed into the first threaded hole 301, so that the adjacent second square ring 4 and first square ring 3 are fastened together.

[0033] As Figure 2 shown, in order to cope with the situation that after the first C-shaped housing 1 and the second C-shaped housing 2 are docked, the first fitting block 63 can be smoothly inserted into the upper and lower receiving grooves;

[0034] It is designed that a second connecting component 7 for cooperating with the first connecting component 6 is provided on the side wall at the connection of the first C-shaped housing 1 and the second C-shaped housing 2. The second connecting component 7 is used to adjust the gap between the first C-shaped housing 1 and the second C-shaped housing 2. The second connecting component 7 includes a first mounting seat 71, a first connecting shaft 72, a threaded shaft 73, a second mounting seat 74 and a knob 75. The first mounting seat 71 is fixedly connected to the side wall of the second C-shaped housing 2, the second mounting seat 74 is fixedly connected to the side wall of the first C-shaped housing 1, the first connecting shaft 72 is rotatably connected inside the first mounting seat 71, the threaded shaft 73 is vertically installed on the first connecting shaft 72, the knob 75 is sleeved on the end of the threaded shaft 73, and the threaded shaft 73 is threadedly connected to the knob 75.

[0035] Subsequently, by rotating the knob 75, it moves downward on the surface of the threaded shaft 73, and the lower part of the rotated knob 75 abuts against the upper surface of the second mounting seat 74, pushing the second mounting seat 74 to drive the first C-shaped housing 1 to move towards one side of the second C-shaped housing 2, so that the two C-shaped housings are buckled and fastened together.

[0036] As a preferred solution, a stop block 76 is fixedly installed at the end of the threaded shaft 73. The knob 75 is located between the stop block 76 and the first connecting shaft 72. The provided stop block 76 is fixed to the end of the threaded shaft by welding, which can be used to prevent the knob 75 from detaching from the connection with the threaded shaft 73.

[0037] Subsequently, the ventilation duct will be installed on the ceiling or hanger. It is selected that a suspension plate 5 is installed at the bottom of the second C-shaped housing 2. A second through hole 501 is provided on the suspension plate 5. Subsequently, the suspension wire can be connected to the ceiling or hanger after passing through the second through hole 501 of the suspension plate 5.

[0038] In addition, it is worth noting that the ventilation duct can be made of steel material, so it has better resistance to deformation during transportation. In addition, it can withstand high temperatures or resist high temperatures. In addition, in other embodiments, a fireproof layer can be covered on its surface, such as electroplating or spraying a layer of fireproof coating to further enhance the overall high-temperature resistance. The ventilation duct can be used in an environment with a relatively high temperature and has strong adaptability.

[0039] The above-described embodiments only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A steel fire-resistant ventilation duct, characterized in that: It includes a first C-shaped housing (1), and a second C-shaped housing (2) is detachably connected below the first C-shaped housing (1). A first connecting component (6) is provided on the side wall at the connection of the first C-shaped housing (1) and the second C-shaped housing (2). The first connecting component (6) includes a first L-shaped bracket (61), a second L-shaped bracket (62), and a first mating block (63). The first L-shaped bracket (61) is fixedly installed on the side of the first C-shaped housing (1). The first L-shaped bracket (61) and the side wall of the first C-shaped housing (1) form a first receiving groove with an upward opening. The second L-shaped bracket (62) is fixedly installed on the side of the second C-shaped housing (2). The second L-shaped bracket (62) and the side wall of the second C-shaped housing (2) form a second receiving groove with a downward opening. The first mating block (63) is inserted into the first receiving groove and the second receiving groove. The first mating block (63) is used for centering and clamping the first C-shaped housing (1) and the second C-shaped housing (2).

2. A steel fire-resistant ventilation duct according to claim 1, characterized in that: The second C-shaped housing (2) has a first convex block (201), and a first groove (101) matching the first convex block (201) is provided on the first C-shaped housing (1). Both the first groove (101) and the first convex block (201) are located between the first C-shaped housing (1) and the second C-shaped housing (2).

3. A steel fire-resistant ventilation duct according to claim 2, characterized in that: After the first C-shaped housing (1) and the second C-shaped housing (2) are connected, a rectangular ventilation duct is formed. One end of each rectangular ventilation duct is provided with a first square ring (3), and the other end of each rectangular ventilation duct is provided with a second square ring (4). Moreover, the second square ring (4) of the previous rectangular ventilation duct is sleeved on the adjacent first square ring (3).

4. A steel fire-resistant ventilation duct according to claim 3, characterized in that: A first coaxial hole (401) is provided on the second square ring (4), and a first threaded hole (301) with the same axis as the first coaxial hole (401) is provided on the first square ring (3).

5. A steel fire-resistant ventilation duct according to claim 1, characterized in that: A second connecting component (7) for cooperating with the first connecting component (6) is provided on the side wall at the connection of the first C-shaped housing (1) and the second C-shaped housing (2). The second connecting component (7) is used to adjust the gap between the first C-shaped housing (1) and the second C-shaped housing (2).

6. A steel fire-resistant ventilation duct according to claim 5, characterized in that: The second connecting component (7) includes a first mounting seat (71), a first connecting shaft (72), a threaded shaft (73), a second mounting seat (74), and a knob (75). The first mounting seat (71) is fixedly connected to the side wall of the second C-shaped housing (2). The second mounting seat (74) is fixedly connected to the side wall of the first C-shaped housing (1). The first connecting shaft (72) is rotatably connected inside the first mounting seat (71). The threaded shaft (73) is vertically installed on the first connecting shaft (72). The knob (75) is sleeved on the end of the threaded shaft (73). The threaded shaft (73) is threadedly connected to the knob (75).

7. A steel fire-resistant ventilation duct according to claim 6, characterized in that: A stop block (76) is fixedly installed at the end of the threaded shaft (73), and the knob (75) is located between the stop block (76) and the first connecting shaft (72).

8. A steel fire-resistant ventilation duct according to claim 1, characterized in that: A suspension plate (5) is installed at the bottom of the second C-shaped housing (2), and a second through hole (501) is formed in the suspension plate (5).

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