JP3038050U - Fireproof tube for antifreeze duct - Google Patents

Abstract

(57) [Summary] [Purpose] A fire resistant PVC pipe with a built-in heating element that uses a general-purpose refractory material to be used as a drainage pipe with anti-freezing and fire resistance in middle and high-rise buildings. Provide a tube. [Composition] PVC pipe with a built-in heating element,
Fiber reinforced mortar pipes (1a) and (1b) are covered and bonded from both ends, and slate pipes (4a) and (4b) are inserted in the gap.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a fireproof pipe for drainage pipes which are required to prevent freezing of middle-high-rise buildings and the like.

[0002]

[Prior art]

 For pipes that drain rainwater from the rooftops of rural high-rise buildings, which have been expected to freeze during the winter season, wire-cast electric heating elements are used using steel pipes because of damage prevention and fire resistance problems caused by freezing. ing.

[0003]

[Problems to be solved by the device]

 Since the conventional technology uses steel pipes, it is very heavy, and the joints between the pipes are threaded on both sides, and further steel pipe joints are required. Therefore, the workability is extremely poor, which causes the construction cost to rise. The present invention uses a vinyl chloride tube with a built-in heating element, which has a very light weight due to the structure of the product and can be connected easily and quickly with an adhesive at the time of connection, and covers it with the fireproof tube of the present invention. This is because the fire resistance effect is extremely high, and the construction cost can be reduced by not requiring a throw-in heating element.

[0004]

[Means for Solving the Problems]

 For the above purpose, the present invention covers a vinyl chloride tube (2) having a built-in heating element and a connecting joint with a fiber reinforced mortar tube (1a) (1b) having a cutout of a power cord outlet. , This is joined with a mortar adhesive.

[0005]

[Operation]

 Slate tubes (4a) and (4b) having an inward end face coated with a mortar adhesive may be inserted in the gap between the outer cylinders (1a) and (1b) and the vinyl chloride tube (2) containing the heating element.

[0006]

【Example】

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

FIG. 1 shows an outer shape of a fireproof tube according to the present invention, a cross section of which is shown in FIG. 2, and a vinyl chloride tube having a built-in heating element is shown in FIG. In this embodiment, fiber reinforced mortar tubes are used for the outer cylinders (1a) and (1b), and a snow melting duct of Utility Model Registration No. 3027819 is used for the vinyl chloride tube (2) with a joint containing a heating element.

For manufacturing, first, cut portions (6) for taking out the power cord are formed in the outer cylinders (1a) (1b), and the cut portions (6) are covered from both ends of (2). The outer cylinder may be joined at the joining portion (5) with a mortar adhesive. For the gap between the outer cylinders (1a) (1b) and the vinyl chloride pipe (2) with a built-in heating element, insert the slate pipes (4a) (4b) whose inner end faces are coated with mortar adhesive, and bond them. If fixed, it is easy to manufacture.

[0009]

[Effect of the invention]

 The fire-resistant pipe according to the present invention uses standard fiber-reinforced mortar pipe and general-purpose slate pipe, and can be manufactured at low cost because it covers vinyl chloride pipe with a built-in heating element and a joint. Also, it has the effect of connecting fireproof fiber reinforced mortar vinyl chloride pipes.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

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

FIG. 3 is a sectional view of a vinyl chloride pipe with a built-in heating element showing an embodiment of the present invention.

[Explanation of symbols]

 1a Left outer casing fiber reinforced mortar pipe 1b Right outer casing fiber reinforced mortar pipe 2 Vinyl chloride pipe with joint with built-in heating element 3 Power cord 4a Left slate pipe 4b Right slate pipe 5 Fiber reinforced mortar pipe joint 6 Notch for power cord extraction mouth

Claims (1)

[Utility model registration claims] 1. A refractory tube made of a slate tube having a fire resistance, an appropriate diameter and an appropriate length, which is covered with a vinyl chloride tube with a built-in heating element, and which has an outlet for an electric cord.