CN206967954U - Double telescopic plastic tube expanding devices - Google Patents

Abstract

Double-sleeve plastic pipe flaring device, including a drill body, one end of the drill body is a drill bit, an outer sleeve is fixed outside the drill body, the inner sleeve and the outer sleeve are connected by threads, and an opening groove is provided at the end of the inner sleeve . When in use, insert the water heating pipe fittings into the inner sleeve, tighten the opening groove at the end of the inner sleeve with a hoop, manually rotate the threaded connection of the inner and outer sleeves, and the outer sleeve drives the drill bit into the cutting the inner cavity of the water heating pipe fitting, so as to expand the inner diameter of the water heating pipe fitting. It solves the installation problem of plumbing pipe fittings and water distributors with the same outer diameter and different wall thicknesses in the market, improves construction efficiency and reduces potential safety hazards.

Description

Double-sleeve plastic pipe flaring device

technical field

The utility model relates to a pipe end forming device for plastic pipes, in particular to a flaring device for plastic pipes.

Background technique

With the improvement of living standards, more and more households have begun to use floor heating for heating, and water heating pipes are basically made of plastic. Plumbing pipe fittings with the same outer diameter have a variety of wall thickness specifications, such as 4-point plumbing pipes, that is, water heating pipes with an outer diameter of 20mm, which have various wall thickness specifications such as 2.0mm and 2.3mm, but 2.0mm is the main one; The branch diameter of the water separator is mainly 16mm; when connecting, set the water heating pipe fittings on the outside of the water heating water separator, and then fix the two with fasteners.

Since the outer diameter of the water heating pipe fittings is consistent, but the wall thickness is inconsistent, there is a size problem in the inner diameter. When the water heating pipe fittings are set outside the water heating water separator, it is basically forced to install the water heating pipe fittings and branch ports of different diameters by strong extrusion. The installation process is time-consuming, laborious, inefficient, and there are cracks in the pipe fittings and branch ports. security risks. Also useful cutter is carried out simple scraping to the inner cavity of water heating pipe fitting, easily causes the inner cavity of water heating pipe fitting uneven, wall thickness is uneven, also has hidden dangers such as water leakage, rupture.

Contents of the invention

In order to solve the deficiencies of the prior art, a double-sleeve plastic pipe flaring device is provided, which has a reasonable structure and is easy to use.

To achieve the above object, the present invention adopts the following technical solutions:

Double-sleeve plastic pipe flaring device, including a drill body, one end of the drill body is a drill bit, an outer sleeve is fixed outside the drill body, the inner sleeve and the outer sleeve are connected by threads, and an opening groove is provided at the end of the inner sleeve .

In the above-mentioned double-sleeve type plastic pipe flaring device, the end of the drill body is provided with threads, the outer sleeve and the end of the drill body are connected through threads, and the drill body and the outer sleeve are fastened with nuts.

In the above-mentioned double-sleeve type plastic pipe flaring device, the drill bit and the drill body are threaded.

When the present invention is in use, the water heating pipe is inserted into the inner sleeve, the opening groove at the end of the inner sleeve is closed with a hoop, the water heating pipe and the inner sleeve are fastened, and the inner and outer sleeves are manually tightened. Rotate, the inner and outer sleeves rotate relative to each other due to the screw connection, so that the outer sleeve drives the drill bit to extend into the inner cavity of the cutting water heating pipe, thereby expanding the inner diameter of the water heating pipe.

The drill body is threadedly connected with the outer sleeve, so that the present invention is easy to install in the production process, and certainly the two can be fixed in other ways such as welding.

The threaded connection between the drill bit and the drill body can facilitate the replacement of different shapes of drill bits for water heating pipes of different materials and different calibers, so as to improve the efficiency of flaring cutting.

Compared with the existing technology, when the inner diameter of the plumbing pipe fittings does not match the outer diameter of the water separator, there is no need to purchase additional water separators of special specifications, and the utility model can be properly installed with the water separator through simple flaring processing. The operation is simple, fast and effective. Therefore, the installation problem of plumbing pipe fittings and water distributors with the same outer diameter and different wall thicknesses on the market can be solved, the construction efficiency can be improved, and potential safety hazards can be reduced.

Description of drawings

Figure 1 is a schematic diagram of the overall structure of the present invention.

Fig. 2 is a schematic cross-sectional structure diagram of the present invention.

It is marked as: 1 drill body, 11 drill bit, 2 nut, 21 spacer, 3 outer sleeve, 4 external thread of the inner sleeve, 5 inner sleeve, 6 open groove at the end of the inner sleeve.

Detailed ways

Embodiment one

With reference to accompanying drawing, double-sleeve type plastic pipe flaring device comprises a drill body 1, drill body one end is a drill bit 11, and the end of drill body is provided with screw thread, and outer sleeve 3 drill body ends are connected by thread, and nut 2 The outer sleeve is fastened with the drill body; the inner sleeve is provided with external threads, the outer sleeve is provided with internal threads, the inner and outer sleeves are connected by threads, and the end of the inner sleeve is provided with an opening groove.

When in use, insert the water heating pipe made of plastic material into the inner sleeve, cover the outer side of the opening groove of the inner sleeve with a hoop, and tighten the hoop so that the water heating pipe is fastened inside the inner sleeve. The inner and outer sleeves are threaded, and the inner and outer sleeves are rotated by holding the inner and outer sleeves with both hands, so that the two are relatively rotated, so that the drill bit is driven by the outer sleeve and inserted into the inner cavity of the water heating pipe for cutting, and finally the water heating is realized. The flare of the inner diameter of the fitting.

The invention realizes the flaring of the water heating pipe fittings through simple operation, so that the connection reliability between the water heating pipe fittings and the water distributor is high, and the potential safety hazard is eliminated.

Embodiment two

Different from Embodiment 1, in the double-sleeve plastic pipe flaring device described in this embodiment, the drill bit and the drill body are connected by threads. For water heating pipe fittings of different materials and different calibers, different types of drill bits can be replaced, in order to improve the efficiency of flaring and cutting, and at the same time facilitate the maintenance of the drill bits.

Claims (3)

1. Double-sleeve plastic pipe flaring device, including a drill body, characterized in that one end of the drill body is a drill bit, an outer sleeve is fixed outside the drill body, the inner sleeve and the outer sleeve are connected by threads, and the inner sleeve Open slot at the end. 2. The double sleeve type plastic pipe flaring device as claimed in claim 1, characterized in that the end of the drill body is provided with threads, the outer sleeve and the end of the drill body are connected by threads, and the drill body and the outer sleeve are tightened with nuts. solid. 3. The double-sleeve plastic pipe flaring device as claimed in claim 1, characterized in that the drill bit and the drill body are threaded.