CN204942777U - Seamless ventilation duct - Google Patents
Seamless ventilation duct Download PDFInfo
- Publication number
- CN204942777U CN204942777U CN201520492018.8U CN201520492018U CN204942777U CN 204942777 U CN204942777 U CN 204942777U CN 201520492018 U CN201520492018 U CN 201520492018U CN 204942777 U CN204942777 U CN 204942777U
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- CN
- China
- Prior art keywords
- ventilation duct
- seamless
- main pipe
- flange
- described main
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of seamless ventilation duct, comprise main pipe, described main pipe two ends are provided with flange, described main pipe adopts seamless steel pipe, described flange is provided with some attachment holes, and described main pipe is straight tube or bend pipe, and described main pipe and flange surface are provided with resin layer.The seamless ventilation duct being provided with straight tube forms general ventilation duct, and the seamless ventilation duct being provided with bend pipe forms elbow.
Description
Technical field
The utility model relates to a kind of seamless ventilation duct, and body adopts seamless steel pipe to make, and two ends are provided with flange, and seamless steel pipe sealability is reliable, when ventilation duct carries out assembly and connection, connects by flange rapid-assembling.
Background technique
In building underground civil defense engineering, need to arrange ventilation duct to meet the needs of air circulation.The connection of ventilation duct is used in specific positions such as installing gas-particulate filter, valve, oil network additional, plays into the unobstructed effect of air draft.
Civil air defense constructions and installations, after civil engineering is completed, needs to install chemical warfare protective equipment.Present situation be defense equipment product by defense equipment manufacturer production, ventilation duct is processed by steel market, job site make, steel plate retail sales processing etc., do not have unified specification model and technical parameter.
Existing ventilation duct, body adopts steel plate to roll usually, and seam crossing adopts welded seal, and weld seam distributes vertically.Flange needs multistage to splice could form predetermined radius, and on body, weld seam has axial, also has many longitudinal reams.There is following number of drawbacks in existing ventilation duct:
A, production process are more, and size can not be guaranteed.Existing production process generally includes: the operations such as steel plate cutting, steel plate roll, seam welds, and welding the most easily causes workpiece deformation, so the ventilation duct made is difficult to keep tubular type, is unfavorable for that the later stage assembles.
B, due to steel plate thinner, conventional design thickness adopt 1-3mm, weld joint is easily burnt, solder skip, and sealing effect can not be guaranteed.
C, through using for a long time, easily ftracture in weld joint, causes seal failure.The weld seam of long distance is easy to occur rosin joint, so after the processes such as transport, assembling, use, the phenomenon of weld joint cracking often occurs.
D, surface lack antirust, anti-corrosion treatment.Because ventilation duct is arranged on the space such as ventilating shaft of basement, building, also there is part body outdoor layout, often corrosion occurs.
When e, tube and tube assembly and connection, adopt welding, execute-in-place is complicated, and need to arrange welding equipment, sealing can not Reliable guarantee.
Model utility content
For problems of the prior art, the purpose of this utility model is to provide a kind of seamless ventilation duct, and body adopts seamless steel pipe to make, two ends are provided with flange, seamless steel pipe sealability is reliable, during ventilation duct assembly and connection, connects fast by flange.
For achieving the above object, the utility model is by the following technical solutions:
Seamless ventilation duct, comprises main pipe, and described main pipe two ends are provided with flange, and described main pipe adopts seamless steel pipe.
Further, described flange is provided with some attachment holes.
Further, described main pipe is straight tube or bend pipe, and described main pipe's internal diameter is 315mm, 441mm, 560mm, 666mm, 870mm or 1090mm.
Further, described main pipe and flange surface are provided with resin layer.
Further, described resin layer adopts rust proof paint.
Further, when described seamless ventilation duct connects, caulking gum packing ring is provided with between the flanges.
Further, described main pipe is T-shaped, and adopt laterally and vertical seamless steel pipe welding formation, 3 ports are provided with flange.
Further, be provided with some floors in the middle part of described main pipe, described seamless ventilation duct forms joint through walls.
Further, described flange is integrated the annulus made, and is welded to main pipe two ends.
The seamless ventilation duct adopting said structure to arrange, has the following advantages:
Compared with prior art, seamless ventilation duct production process of the present utility model simplifies, seamless steel pipe adopt cold-drawn or hot drawing shaping, workpiece is not yielding, and the ventilation duct made can keep tubular type, and size can be guaranteed, and is conducive to later stage assembling.
Seamless ventilation duct of the present utility model does not have weld seam, and through using for a long time, sealing effect also can be guaranteed.
Through antirust, anti-corrosion treatment, not easily there is corrosion in seamless ventilation duct surface of the present utility model.
During the utility model tube and tube assembly and connection, connect fast by flange, easy for installation, sealing effect also can be guaranteed.
Accompanying drawing explanation
Fig. 1 is the stereogram of the utility model embodiment 1;
Fig. 2 is the plan view of the utility model embodiment 1;
Fig. 3 is the left body figure of the utility model embodiment 1;
Fig. 4 is the left view of the utility model embodiment 1;
Fig. 5 is the stereogram of the utility model embodiment 2;
Fig. 6 is the plan view of the utility model embodiment 2;
Fig. 7 is the worm's eye view of the utility model embodiment 2;
Fig. 8 is the worm's eye view of the utility model embodiment 2;
Fig. 9 is assembled state figure of the present utility model.
In figure: 1. main pipe; 2. flange; 2-1. attachment hole; 3. rubber washer; 4. bolt.
Embodiment
For further setting forth the utility model for the technological means that reaches predetermined object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, structure of the present utility model, feature and effect are described in detail as follows.
Seamless ventilation duct described by the present embodiment, structure, as shown in Fig. 1, Fig. 5, Fig. 9, comprises main pipe 1, and main pipe 1 two ends are provided with flange 2, and main pipe adopts seamless steel pipe 1.Seamless ventilation duct does not have weld seam, and through using for a long time, sealing effect also can be guaranteed, and has weld seam ventilation duct to improve airtight quality than of the prior art.
As shown in Figure 3, Figure 4, flange 2 is provided with some attachment hole 2-1.The quantity of attachment hole 2-1 can between 3-20.Flange 2 is integrated the annulus made, and is welded to main pipe 1 two ends.
Main pipe 1 is straight tube or bend pipe.The seamless ventilation duct being provided with straight tube forms general ventilation duct, and the seamless ventilation duct being provided with bend pipe forms elbow.The internal diameter of main pipe 1 can be any one of 315mm, 441mm, 560mm, 666mm, 870mm or 1090mm.
Main pipe 1 and flange 2 surface are provided with resin layer.Resin layer adopts rust proof paint.
As shown in Figure 9, when seamless ventilation duct connects, between flange 2, caulking gum packing ring 3 is provided with.
According to actual needs, main pipe 1 can also be set to T-shaped, adopts laterally and vertical seamless steel pipe welding formation, correspondingly needs all to arrange flange 2 at 3 ports.
When ventilation duct needs through walls, be provided with some floors in the middle part of main pipe 1, seamless ventilation duct forms joint through walls.Floor is fixed on the levelness and fastness that keep joint through walls in body of wall, then passes through other ventilation ducts of Flange joint at two ends.
Described just in order to the utility model is described above, be construed as the utility model and be not limited to above embodiment, meet the various variants of the utility model thought all within protection domain of the present utility model.
Claims (9)
1. seamless ventilation duct, comprises main pipe, it is characterized in that, described main pipe two ends are provided with flange, and described main pipe adopts seamless steel pipe.
2. seamless ventilation duct as claimed in claim 1, is characterized in that, described flange is provided with some attachment holes.
3. seamless ventilation duct as claimed in claim 1, it is characterized in that, described main pipe is straight tube or bend pipe, and described main pipe's internal diameter is 315mm, 441mm, 560mm, 666mm, 870mm or 1090mm.
4. seamless ventilation duct as claimed in claim 1, it is characterized in that, described main pipe and flange surface are provided with resin layer.
5. seamless ventilation duct as claimed in claim 4, is characterized in that, described resin layer adopts rust proof paint.
6. seamless ventilation duct as claimed in claim 1, is characterized in that, when described seamless ventilation duct connects, is provided with caulking gum packing ring between the flanges.
7. seamless ventilation duct as claimed in claim 1, it is characterized in that, described main pipe is T-shaped, and adopt laterally and vertical seamless steel pipe welding formation, 3 ports are provided with flange.
8. seamless ventilation duct as claimed in claim 1, it is characterized in that, be provided with some floors in the middle part of described main pipe, described seamless ventilation duct forms joint through walls.
9. seamless ventilation duct as claimed in claim 1, it is characterized in that, described flange is integrated the annulus made, and is welded to main pipe two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492018.8U CN204942777U (en) | 2015-07-09 | 2015-07-09 | Seamless ventilation duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520492018.8U CN204942777U (en) | 2015-07-09 | 2015-07-09 | Seamless ventilation duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204942777U true CN204942777U (en) | 2016-01-06 |
Family
ID=55010206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520492018.8U Expired - Fee Related CN204942777U (en) | 2015-07-09 | 2015-07-09 | Seamless ventilation duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204942777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090505A (en) * | 2016-08-21 | 2016-11-09 | 无锡宝宏船舶机械有限公司 | Spiral duct elbow |
-
2015
- 2015-07-09 CN CN201520492018.8U patent/CN204942777U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106090505A (en) * | 2016-08-21 | 2016-11-09 | 无锡宝宏船舶机械有限公司 | Spiral duct elbow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20180709 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |