CN2068634U - plastic tube - Google Patents

Abstract

The utility model relates to an improvement of plastic pipe, which is formed by the muff-coupling of two different inner and outer pipes, and is characterized in that: the outer pipe is made of PVC material, the inner pipe is made of PE or PP material without toxicity, and the upper surface of the inner pipe is provided with a plurality of protruding bodies which are in shapes of big upper part and small lower part, and the inner surface of the outer pipe is matched with the protruding body shape of the inner pipe to form a plurality of protruding body grooves with the same shape, so that the inner pipe and the outer pipe can be mutually sleeved into a whole, and the plastic pipe is free from toxicity when being used as a water delivery pipe of drinking water.

Description

Existing water pipes used for food or drinking water are made of PE (polyethylene), PP (polypropylene) or PVC (polyvinyl chloride) plastic pipes, but pure PE and PP plastic pipes are There are no capillary holes during molding, so two tubes cannot be glued together with sleeves to form a connected body, which is quite inconvenient, but its biggest advantage is that it is a non-toxic material. Furthermore, when PVC plastic pipes are traditionally used for interior decoration or water and electricity piping, in order to adapt to changes in terrain or regions, they can be softened by fire, and before they harden, they can be easily put in pairs PVC pipes of the same material are glued together to complete the piping work. However, if the general drinking water pipes are fitted in the above-mentioned way, the deadly toxin, the poison of the century, will be decomposed after the PVC pipe is treated or heated. Dioxin, this will cause great harm to the human body, but because of the convenience of piping, sometimes it is impossible to abandon it. In order to improve the lack of independent manufacturing of the above two materials, the inventors want to improve. The utility model is a plastic pipe with an inner layer made of PE or PP material and an outer layer made of PVC material, so that the part in contact with drinking water Non-toxic material, but easy to glue the connection.

The purpose of this utility model is to provide a non-toxic drinking water pipe, but it is easy to glue the plastic pipe to take over, so as to eliminate the harm to the human body, so that people can have safe and clean drinking water.

The feature of this utility model is that the inner tube is made of non-toxic PE or PP material, and there are multiple protrusions on the surface of the inner tube, so that it can be integrated with the outer layer of PVC pipe sleeve to form an inner tube. , Plastic tubes with different outer tube materials.

As for the plastic pipe of the present utility model, its structural features are as shown in the accompanying drawings, and are described in detail as follows:

Brief description of the drawings

Figure 1: Appearance of the utility model.

Figure 2: Sectional view of the utility model.

Fig. 3: Embodiment 1 of the sectional view of the utility model.

Fig. 4: Embodiment 2 of the sectional view of the utility model.

Fig. 5: Embodiment 3 of the sectional view of the present utility model.

Please refer to Fig. 1 first, which is an appearance view of the present utility model, as shown in the figure, the utility model is an outer tube 1 made of a PVC material, and an inner tube made of non-toxic PE or PP material 2 is socketed and made into an integrated plastic pipe, wherein the inner pipe 2 is a flexible pipe body, and there are a plurality of protrusions 21 on the outer surface of the inner pipe 2, and the protrusions are large at the top and small at the bottom. shape, and the inner surface of the outer tube matches the shape of the protrusion 21 of the inner tube to form the same number and shape of protrusion grooves 11, so that after the inner and outer tubes 1 and 2 are fitted together, a tight plastic tube that is not easy to separate is formed. .

In the state that the above-mentioned inner and outer pipes 1 and 2 are fitted and fixed, as shown in Figure 2, the soft and non-toxic inner pipe 2 can be ideally wrapped in the outer pipe 1 of PVC material, so that the When the plastic pipe is used as a water pipe for drinking water, only its non-toxic inner pipe is in contact with the water, so that consumers can drink with peace of mind.

Furthermore, the inner tube protrusion 21 shown in Fig. 3, 4, and 5 has a large upper and a lower small shape as mentioned above, but it can be freely matched to become a trapezoid, a rhombus, an arc or a polygon, and its purpose is to prevent Falling off between inner and outer pipes makes the application range of the utility model more extensive.

In addition, the utility model adopts a soft inner tube made of PVC material for the outer tube and a soft inner tube made of PE or PP for the inner tube, and the connection work between the tubes can be implemented by using the PVC material, but the non-toxic inner tube is used. Pipe, which can make it safer when used in water pipes, and has a considerable difference from the usual single-material plastic pipes, and if it is used in piping in cold regions or areas with frequent earthquakes, because of its The inner pipe is made of soft PE material, so even if the PVC material of the outer pipe becomes brittle and cracks due to cold or the outer pipe is broken due to an earthquake, the inner pipe is not easy to break and the water in the water pipe will leak out. Thereby the utility model is more consistent with originality and practicability.

Claims (5)

1. A plastic pipe, which is characterized in that it is made of a PVC outer pipe and a non-toxic soft inner pipe made of PE or PP material, so that the plastic pipe is easy to be taken over, but when its Even less toxic when used in water pipes. 2. The plastic pipe according to claim 1, characterized in that the outer surface of the inner pipe has a plurality of protrusions and can be combined with the same number and shape of protrusion grooves on the inner surface of the outer pipe, so that the inner and outer The tubes can pass through each other to form a tight plastic tube that is not easy to separate. 3. The plastic tube according to claim 1 or 2, characterized in that said protruding system is in the shape of a large top and a small bottom, and it can be trapezoidal if it is not easy to separate after being fitted. 4. The plastic tube according to claim 1 or 2, characterized in that said protrusion system is in the shape of a large top and a small bottom, and it can be arc-shaped if it is not easy to separate after being fitted. 5. The plastic tube according to claim 1 or 2, characterized in that said protrusion system is in the shape of a large top and a small bottom, and it can be polygonal if it fits in and is not easy to separate.

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