JP3049598U - Anti-freeze fireproof roof drain - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a roof drain with a duct having a built-in fire-resistant heating element. [Structure] A heating element (9) is wound outside and put into an intermediate pipe (5). Further, a fiber-reinforced mortar pipe (2a)
The inner pipe (8) with a valve socket (7) attached at the upper end, a roof drain (1) at the upper part, and a fiber reinforced mortar vinyl chloride joint (3) at the lower part. [Effect] By integrating the anti-freezing fire-resistant duct and roof drain, it has excellent anti-freezing effect and fire resistance.
There is an effect that an inexpensive connection pipe can be easily connected.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to drainage pipes used for buildings and the like, which are required to have fire resistance and freezing prevention.

[0002]

[Prior art]

 Conventionally, roof drains are installed for drainage of local buildings that are expected to freeze in winter, and then steel pipes with throw-in heaters or heaters for pipes are used to prevent freezing and fire resistance. A steel pipe wound from the outside and covered with heat insulating material is used.

[0003]

[Problems to be solved by the invention]

 According to the conventional technology, the pipe body following the roof drain is made of steel pipe, which is heavy, and connecting pipes requires joints and threading, which is extremely poor in workability and raises construction costs. Has become. In terms of preventing freezing, conventional throw-in heaters can only secure a local water channel in extreme freezing. Work such as performing In this invention, a low-cost, lightweight, fire-resistant double-layer pipe is formed by covering a pipe with a joint containing a heater for preventing freezing with a fire-resistant fiber-reinforced mortar pipe and connecting it with a roof drain to integrate it. It is intended to provide a roof drain that can be easily connected by using the as a connection pipe.

[0004]

[Means for Solving the Problems]

 For the above purpose, the present invention has a joint for connecting a connecting pipe on one side and a melting pipe made of a PVC pipe with a built-in heating element with a joint on the other side that can be connected to the roof drain. It is constructed by covering the mortar tube and connecting it to the roof drain.

[0005]

[Action]

 In the gap between the fiber reinforced mortar tube (2a) and the vinyl chloride tube containing a heating element, a slate tube (4) or the like having a mortar adhesive applied to the inward end face may be inserted. Further, a lead wire outlet (10) for transmitting electricity to the heating element may be provided in the vinyl chloride tube and the fiber mortar tube. Further, in order to support the intermediate pipe (5), it is sufficient to fix it with rubber packings (6a) (6b) or the like.

[0006]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows the appearance and a fractured surface of the antifreezing fireproof roof drain according to the present invention, and FIG. 2 shows the cross section. In the present embodiment, the heat-generating portion and the tube portion covering the heat-generating portion are obtained by partially improving the snow melting duct of Utility Model Registration No. 3027819, and the outer portion requiring fire resistance is used for the utility model registration No. 3038050 for freezing prevention duct. Use fire tubes.

First, a rubber packing (6a) for winding a heating element (9) around a valve socket (7) whose socket portion is covered with a slate tube (4) and fixing the intermediate tube (5) is used. Insert and fix the inner tube (8) fitted with. This is attached to a roof drain and a fiber reinforced mortar tube (2a) is attached. Next, while taking out the electric cord from the electric cord outlet, the intermediate pipe (5) is covered with the inner pipe (8) and fitted into the rubber packing (6a). Further, a rubber packing (6b) is inserted into the inner pipe (8) to fix the opposite end face of the intermediate pipe. Next, the fiber reinforced mortar tube (2b) is covered with the intermediate tube (5), and the joint surface (12) is bonded with a mortar adhesive. Finally, the joint (3) connecting the connecting pipes may be inserted and mounted on the inner pipe (8) by applying pressure.

[0009]

[Effect of the invention]

 The anti-freezing fire-resistant roof drain according to the present invention has an integrated anti-freezing fire-resistant duct and roof drain, has excellent anti-freezing effects and fire resistance, and has the effect of easily connecting inexpensive connecting pipes.

[Brief description of the drawings]

FIG. 1 is an external view and a partially broken sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Roof drain main body 2a Upper fiber reinforced mortar pipe 2b Lower fiber reinforced mortar pipe 3 Fiber reinforced mortar vinyl chloride joint 4 Slate pipe 5 Intermediate vinyl chloride pipe 6a Upper rubber packing 6b Lower rubber packing 7 Valve socket 8 Inner pipe PVC pipe 9 Heat generation Body 10 Lead wire outlet 11 Lead wire 12 Fiber reinforced mortar pipe joint surface

Claims (1)

[Utility model registration claims] 1. A roof drain having a built-in heating element and having a connection joint, covered with a fiber-reinforced mortar tube having a suitable diameter and a suitable length, and having a lead wire outlet.