CN202209033U

CN202209033U - Exhaust duct

Info

Publication number: CN202209033U
Application number: CN2011203190902U
Authority: CN
Inventors: 李涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-29
Filing date: 2011-08-29
Publication date: 2012-05-02
Anticipated expiration: 2021-08-29

Abstract

The utility model discloses an exhaust duct and mainly solves the problems that the exhaust duct has high cost, poor technology, uneven walls, large volume weight, and poor fire resisting property, the manpower and financial resources are wasted, the mass production cannot be achieved, etc. in the prior art. The exhaust duct is formed by combining four L-shaped fire-resistant plates. All the fire-resistant plates are connected with one another by fire-proof adhesives, so that the body stability of the exhaust duct is greatly improved; the purposes of high strength, high fire endurance, light mass, high compression resistance, high flexural strength and high impact resistance; and the mass production is easy to achieve.

Description

Exhaust duct

Technical field

The utility model relates to a kind of exhaust duct.

Background technology

In China the 1970s and 1980s in the past, kitchen, ventilation stack use in the washroom exhaust, is a kind of concrete product, and its weight is big, and area occupied is big, and ventilation is little, have no prevent pouring in down a chimney, the backflow proof measure.To the nineties, tentatively developing into cement mortar is main raw-material exhaust duct, but still does not solve the problem of smoke blowing, taint of odour, though produced pressure swing type preventing air reverse flow road afterwards, its volume is excessive, and comparatively difficulty is installed.Arise at the historic moment to the various ventilation stacks of twentieth century.Check (non-return) valve, fire resisting damper occur in succession, though these products have reached the target such as little that takes up room, its production technology is comparatively loaded down with trivial details, and the corrosion time limit is shorter, can't be up to state standards; Frequent maintenance, cleaning and replacing bring very burden to the owner.In addition, also there is wall unevenness in existing ventilation stack, and resistance to compression, anti-folding, shock resistance, index such as fire-resistant can not satisfy the national standard requirement far away, exist great potential safety hazard.

The utility model content

To the problems referred to above, the purpose of the utility model is to provide a kind of easy-to-install fire-type exhaust duct.

For achieving the above object, the utility model exhaust duct is combined by four L type refractory slabs.

Particularly, the 5th L type refractory slab is set axially in said exhaust duct, and fixes, said exhaust duct is divided into two cavitys with right-angle connector.

Particularly, the inner wall smooth of said exhaust duct, outer wall is coarse.

Particularly, employing right angle, said exhaust duct angle seam place reinforces.

Particularly, said refractory slab connects with the fire prevention bonding agent.

The beneficial effect of the utility model is:

The utility model exhaust duct forms through four L type refractory slab combination adhesions, has realized that the exhaust duct volume is little, and in light weight, intensity is high, and purposes such as simple, fire safety, province's consumption are installed.The utility model L type refractory slab can be realized mechanization, scale, industrialization production.

The said exhaust duct of the utility model, its inner wall smooth is easy to air draft, the outside coarse finishing of being convenient to.And has an intensity height, resistance to compression, anti-folding, strong, the light weight of anti-impact force, characteristics such as fire-resistant.

Description of drawings

Fig. 1 is the plan structure sketch map of the utility model exhaust duct one specific embodiment;

Fig. 2 is the plan structure sketch map of another specific embodiment of the utility model exhaust duct;

Fig. 3 is the perspective view of Fig. 1;

Fig. 4 is the perspective view of Fig. 2;

The specific embodiment

Below in conjunction with Figure of description the utility model is done further description.

As shown in figures 1 and 3, the utility model exhaust duct is combined by four L type refractory slabs 1, and the angle seam place adopts the right angle to reinforce, and with the adhesion of high-strength fire-retardant stick, has improved the stability of body greatly.

Like Fig. 2 and shown in Figure 4, the 5th L type refractory slab 1 axially is set in exhaust duct, said exhaust duct is divided into two cavitys, and fixing with right-angle connector 2.

Particularly, the inner wall smooth of said exhaust duct, outer wall is coarse, is convenient to finishing, and is convenient in user's actual use needs in daily life.

Particularly, said exhaust duct refractory slab is with the adhesion of high-strength fire-retardant stick, and the plate seam does not split when receiving external impacts; Can the better maintaining pipeline whole safety; Avoid gas leakage, loosening, the stability, soundness, resistance to compression, anti-folding, the shock resistance that have improved body also improve greatly.

Preferably; The said exhaust duct of the utility model adopts material mechanism such as the low alkali grid cloth fortifying fibre of 425 ordinary Portland cements to produce, and its sorrow point is that product strength is high, light weight (be mill run weight 66%); Resistance to compression, anti-folding, anti-impact force are strong; Cost of transportation low (be mill run 40%) does not receive season limit, can form mechanization, scale, industrialization large-scale production in enormous quantities.

More than; Be merely the preferred embodiment of the utility model; But the protection domain of the utility model is not limited thereto; Any technician who is familiar with the present technique field is in the technical scope that the utility model discloses, and the variation that can expect easily or replacement all should be encompassed within the protection domain of the utility model.Therefore, the protection domain of the utility model should be as the criterion with the protection domain that claim was defined.

Claims

1. exhaust duct, it is characterized in that: said exhaust duct is combined by four L type refractory slabs.

2. according to the said exhaust duct of claim 1, it is characterized in that: the 5th L type refractory slab axially is set in said exhaust duct, and fixes, said exhaust duct is divided into two cavitys with right-angle connector.

3. according to the said exhaust duct of claim 1, it is characterized in that: the inner wall smooth of said exhaust duct, outer wall is coarse.

4. according to the said exhaust duct of claim 1, it is characterized in that: said exhaust duct angle seam place adopts the right angle to reinforce.

5. according to the said exhaust duct of claim 1, it is characterized in that: said refractory slab connects with the fire prevention bonding agent.