Fire-resistant heat insulation device for smoke prevention and exhaust air pipe

Abstract

The utility model belongs to the technical field of fire-fighting equipment, and particularly relates to a fire-resistant heat insulation device for a smoke prevention and exhaust air pipe, which comprises an outer wrapping pipe and a fire-resistant interlayer, a rotating plate is rotatably arranged at the bottom of the outer wrapping pipe, and a round hole for embedding the rotating plate is formed in the bottom of the outer wrapping pipe in a penetrating manner; an observation window is fixedly assembled from the circle center to the edge of the rotating plate, a connecting pipe is fixedly connected to the bottom of one end of the observation window, and a conical column is fixedly connected to the connecting pipe through a fixing rod on the inner wall; the observation window is controlled to rotate through the connection pipe, the surface wall of the fireproof interlayer can be observed, the rotation of the connection pipe can drive the pressure detection ball to extrude the fireproof interlayer, and water in the fireproof interlayer is forced to drip along the conical column; maintenance personnel can intuitively judge the damp condition of the fireproof interlayer according to the change of the surface wall of the fireproof interlayer and the moisture of the conical column, so that potential dangers can be found in time for maintenance and replacement, and the use safety of the air pipe is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of fire fighting equipment, concretely relates to a fire -resistant heat insulating device of smoke exhaust duct. BACKGROUND

[0002] The smoke exhaust duct is a special duct system for controlling the flow of flue gas in buildings, which is usually composed of composite fireproof plate, color steel plate, flange type clamping strip, etc. When a fire occurs, the smoke exhaust duct effectively guides and discharges flue gas through the air supply and exhaust system, preventing the spread and accumulation of flue gas. In order to meet the production and safety needs, the current smoke exhaust duct is mostly made of double-sided color steel composite material or galvanized steel plate combined with non-combustible materials (such as calcium silicate fireproof plate and aluminum silicate fiber cotton), which has the characteristics of light weight, high strength, good heat insulation, etc. This duct not only meets the fire resistance limit requirement, but also is easy to install and maintain.

[0003] In order to improve the installation efficiency, the fireproof interlayer in the prior art is installed and fixed between the two metal outer walls, which makes it impossible to visually inspect the fireproof interlayer. Once the fireproof interlayer is damp and rots during use, it is difficult to be discovered and replaced in time, which has a high potential risk and affects the service life and safety of the duct. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a fire -resistant heat insulating device of smoke exhaust duct, through the rotation of the connecting pipe control observation window, can observe the surface wall of fireproof interlayer, the rotation of the connecting pipe still will drive the probe pressure ball extrude fireproof interlayer, force the moisture in fireproof interlayer along the taper column trickling, make maintenance personnel can be more intuitive through the change of fireproof interlayer surface wall and the size of taper column moisture humidity to judge the damp condition of fireproof interlayer, thereby in time the potential danger is discovered and is repaired and is replaced, ensure the safety of duct use.

[0005] The technical scheme adopted by the utility model is as follows:

[0006] A fire -resistant heat insulating device of smoke exhaust duct, including outer pipe and fireproof interlayer, the bottom of outer pipe rotatably provided with rotating plate, the bottom of outer pipe is penetrated and is opened the round hole for the rotating plate is embedded, the center of the rotating plate is fixedly assembled with observation window, one end of the observation window is fixedly connected with the connecting pipe, the connecting pipe is fixedly connected with the taper column through the fixed rod of inner wall, the top of the taper column is fixedly connected with the probe pressure ball, the probe pressure ball is attached to the fireproof interlayer, one end of the connecting pipe and below the outer pipe are screw threadedly connected with the cap.

[0007] The inner pipe is fixedly assembled in the outer pipe for smoke exhaust.

[0008] The rotating plate is fixedly connected with a fixed column, and the fixed column is detachably connected with the inner pipe through a fastener at one end.

[0009] The sealing ring is symmetrically fixed and assembled at both sides of the rotating plate and at both sides of the edge of the rotating plate.

[0010] An annular groove is arranged at the edge of the circular hole, and one end of the observation window is fixedly connected with a convex plate used for rotating and fitting with the annular groove.

[0011] One end of the observation window is provided with a through slot for the conical column to pass through.

[0012] The technical effects achieved by the utility model are as follows: the observation window is controlled to rotate through the connecting pipe, the surface wall of the fireproof interlayer can be observed, the rotation of the connecting pipe also drives the pressure probe ball to extrude the fireproof interlayer, the moisture in the fireproof interlayer is forced to drip along the conical column, the maintenance personnel can more directly judge the moisture condition of the fireproof interlayer through the change of the surface wall of the fireproof interlayer and the size of the moisture and humidity of the conical column, so that potential dangers can be found in time for maintenance and replacement, and the safety of the air pipe is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is the appearance bottom view of the fireproof and heat insulation device for smoke exhaust air pipe provided by the embodiment of the utility model;

[0014] Figure 2 is the structure exploded view of the outer pipe provided by the embodiment of the utility model;

[0015] Figure 3 is Figure 2 the local enlarged view of A in the figure;

[0016] Figure 4 is the structure exploded view of the rotating plate provided by the embodiment of the utility model;

[0017] Figure 5 is Figure 4 the local enlarged view of B in the figure.

[0018] In the drawings, the components represented by each reference numeral are listed as follows:

[0019] 1, outer pipe; 101, fireproof interlayer; 102, inner pipe; 103, circular hole; 104, rotating plate; 105, fixed column; 106, sealing ring; 107, observation window; 108, connecting pipe; 109, cap; 110, fastener; 111, through slot; 112, fixed rod; 113, conical column; 114, pressure probe ball; 115, convex plate; 116, annular groove. DETAILED DESCRIPTION

[0020] In order to make the purpose and advantages of the utility model more clearly, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model specifically requested.

[0021] As Figures 1-5 shown, a fireproof and heat-insulating device for smoke exhaust duct, comprising outer pipe 1 and fireproof sandwich 101, the inside of outer pipe 1 is fixedly assembled with inner pipe 102 for smoke exhaust, fireproof sandwich 101 is fixedly assembled between outer pipe 1 and inner pipe 102, the bottom of outer pipe 1 is rotatably provided with rotating plate 104, the bottom of outer pipe 1 is throughly provided with circular hole 103 for embedding rotating plate 104, the center of rotating plate 104 is rotatably connected with fixed column 105, fixed column 105 is detachably connected with inner pipe 102 through fastener 110 at one end, sealing ring 106 is fixedly assembled on both sides of circular hole 103 and at the edge of rotating plate 104, observation window 107 is fixedly assembled from the center to the edge of rotating plate 104, annular groove 116 is provided at the edge of circular hole 103, convex plate 115 is fixedly connected at one end of observation window 107 for rotating embedding annular groove 116, connecting pipe 108 is fixedly connected at the bottom of one end of observation window 107, taper column 113 is fixedly connected with connecting pipe 108 through fixed rod 112 on inner wall, pressure ball 114 is fixedly connected at the top of taper column 113, pressure ball 114 is in close contact with fireproof sandwich 101, through slot 111 is throughly provided at one end of observation window 107 for passing through taper column 113, cap 109 is threadedly connected at one end of connecting pipe 108 and below outer pipe 1.

[0022] According to the above structure, during the maintenance, the connecting pipe 108 is pushed to drive the observation window 107 and the rotating plate 104 to rotate, the rotating plate 104 is supported by the fixed column 105 and the connection of the inner combination pipe 102, the gap between the rotating plate 104 and the round hole 103 is sealed by the sealing ring 106, the observation window 107 is supported by the fireproof glass, has better fireproof performance than the outer pipe 1 and is transparent, but the cost of the observation window 107 is higher than that of the outer pipe 1, so only one narrow and thin one is opened, the surface wall of the fireproof sandwich 101 can be observed through the rotation of the observation window 107 to see whether there is water stain, mold or color change, the observation area is the area of the rotating plate 104, when the rotating plate 104 rotates, the convex plate 115 also rotates in the annular groove 116, the convex plate 115 is embedded in the annular groove 116 to support the edge of the rotating plate 104 and the observation window 107, when the observation window 107 rotates, the conical column 113 and the pressure probe ball 114 also rotate, the pressure probe ball 114 extrudes the fireproof sandwich 101, if the fireproof sandwich 101 has absorbed a certain amount of water, the water may be squeezed out during the drawing process and drip along the conical column 113 to the cap 109, the cap 109 is twisted and removed to check, or the water is directly touched by the finger or wiped by the paper towel to perceive the water on the surface wall of the conical column 113, and during the long maintenance gap, the pressure probe ball 114 is attached to the fireproof sandwich 101, and the water in the fireproof sandwich 101 may also drop into the cap 109 due to the combined influence of capillary phenomenon, water evaporation and condensation, and gravity, etc. When the cap 109 is removed, whether the inner wall has water marks can also be observed, the surface wall change of the fireproof sandwich 101 can be directly observed through the observation window 107, and whether the fireproof sandwich 101 has water can be perceived through the conical column 113; the connecting pipe 108 controls the rotation of the observation window 107, the surface wall of the fireproof sandwich 101 can be observed, the rotation of the connecting pipe 108 also drives the pressure probe ball 114 to extrude the fireproof sandwich 101, forces the water in the fireproof sandwich 101 to drip along the conical column 113, so that the maintenance personnel can more directly judge the moisture condition of the fireproof sandwich 101 through the change of the surface wall of the fireproof sandwich 101 and the size of the moisture of the conical column 113, so as to find the potential danger in time for repair and replacement, and ensure the safety of the use of the air pipe.

[0023] The working principle of the utility model is: during the patrol maintenance, the observation window 107 and the rotating plate 104 can be driven to rotate by pushing the connecting pipe 108, the rotating plate 104 is supported by the connecting of the fixed column 105 and the inner pipe 102, the gap between the rotating plate 104 and the round hole 103 is sealed by the sealing ring 106, the observation window 107 is supported by the fireproof glass, has the more excellent fireproof performance and the transparency than the outer pipe 1, but the cost of the observation window 107 is higher than the outer pipe 1, therefore only a narrow one can be opened, whether the surface wall of the fireproof sandwich 101 appears the water stain, the mildew spot or the color change can be observed by the rotation of the observation window 107, the observation area is the area of the rotating plate 104, when the rotating plate 104 rotates, the convex plate 115 also rotates in the annular groove 116, the convex plate 115 embedded in the annular groove 116 can support the edge of the rotating plate 104 and the observation window 107, when the observation window 107 rotates, the conical column 113 and the pressure ball 114 also rotate, the pressure ball 114 extrudes the fireproof sandwich 101, if the fireproof sandwich 101 has absorbed certain moisture, then the moisture can be squeezed out in the drawing process and drip to the cap 109 along the conical column 113, the cap 109 is unscrewed to check, or the moisture is directly perceived by touching the conical column 113 with the finger or wiping the conical column 113 with the paper towel, and during the long time of the maintenance interval, the pressure ball 114 is attached to the fireproof sandwich 101, the moisture of the fireproof sandwich 101 can also drop to the cap 109 due to the common influence of the capillary phenomenon, the moisture evaporation and condensation and the gravity, when the cap 109 is removed, whether the inner wall has the water mark can also be observed, the surface wall change of the fireproof sandwich 101 can be directly observed through the observation window 107, whether the fireproof sandwich 101 has the moisture can be perceived through the conical column 113.

[0024] The above only is the preferred implementation of the utility model, should point out, for the ordinary skilled person in the prior art, without departing from the principle of the utility model, still can make a number of improvements and refinements, these improvements and refinements also should be regarded as the protection range of the utility model. The structure, device and operation method not specifically described and explained in the utility model, are implemented according to the conventional means in the field, without special description and limitation.

Claims

1. A fire resistant and heat insulating device for smoke control ducts, comprising an outer pipe (1) and a fire resistant interlayer (101), characterized in that: The bottom of the outer pipe (1) is rotatably provided with a rotating plate (104), the bottom of the outer pipe (1) is throughly provided with a circular hole (103) for embedding the rotating plate (104), the center of the rotating plate (104) to the edge is fixedly assembled with an observation window (107), one end of the observation window (107) is fixedly connected with a connecting pipe (108), the connecting pipe (108) is fixedly connected with a tapered column (113) through a fixed rod (112) of the inner wall, the top of the tapered column (113) is fixedly connected with a pressure ball (114), the pressure ball (114) is attached to the fireproof interlayer (101), one end of the connecting pipe (108) and below the outer pipe (1) is threadedly connected with a cap (109).

2. A fire resistant thermal insulation device for smoke control ducts according to claim 1, characterized in that: The inside of the outer pipe (1) is fixedly assembled with an inner pipe (102) for smoke exhaust, and the fireproof interlayer (101) is fixedly assembled between the outer pipe (1) and the inner pipe (102).

3. A fire resistant thermal insulation device for smoke control ducts according to claim 2, characterized in that: The center of the rotating plate (104) is rotatably connected with a fixed column (105), and the fixed column (105) is detachably connected with the inner pipe (102) through a fastener (110) at one end.

4. A fire resistant heat protective system for smoke control ducts according to claim 1, characterised in that: Both sides of the circular hole (103) and at the edges of the rotating plate (104) are symmetrically fixedly assembled with a sealing ring (106).

5. A fire resistant heat insulation device for smoke control ducts according to claim 1, characterized in that: The edge of the circular hole (103) is provided with an annular groove (116), and one end of the observation window (107) is fixedly connected with a convex plate (115) for rotatably embedding the annular groove (116).

6. A fire resistant heat protective system for smoke control ducts according to claim 1, characterised in that: One end of the observation window (107) is throughly provided with a through slot (111) for passing through the tapered column (113).

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