Wear-resistant water supply pipe

Abstract

The utility model discloses an abrasion-resistant water supply pipe which comprises straight pipes, connecting pipes and bent pipes, connecting flanges are installed at the ends of the straight pipes, connecting flanges are installed at the ends of the connecting pipes, connecting flanges are installed at the ends of the bent pipes, and the adjacent pipes are fixed through the connecting flanges and locking bolts. The connecting flange comprises a flange plate, the flange plate is provided with an annular step at the position of the pipe, and an annular protrusion is arranged on the outer side of the flange plate. According to the utility model, the filter screen is arranged at the annular step of the flange plate, the filter screen is clamped at the annular step, a certain filtering effect can be achieved through the filter screen, and foreign matters can be cleaned after the connecting flange is detached; a sealing gasket is arranged between the connected flange plates, the sealing gasket is located at the annular protrusion, and the sealing effect between the pipelines can be improved through the sealing gasket.

Description

TECHNICAL FIELD

[0001] The utility model relates to water supply pipe technical field, and specifically is a wear -resisting water supply pipe. BACKGROUND

[0002] The PVC water supply pipe is a kind of pipe material for water supply, which is produced by the processes of cooling, solidification, setting, inspection, packaging and the like, using sanitary grade polyvinyl chloride resin as main raw material, adding quantitative stabilizer, lubricant, filler, color enhancer and the like, extruding and molding by plastic extruder and injection molding by injection molding machine.

[0003] The existing announcement No. S1, preparing raw materials: SG-5 type PVC resin, rare earth composite stabilizer, propionic acid ester high molecular copolymer, chlorinated polyethylene, active light calcium, titanium white, PE wax, foaming agent;S2, the raw materials are divided into A and B two parts;S3, A part of raw materials is put into the first high-speed mixer to heat mix, then cold mix, and is formed by the first extruder, to obtain the inner layer pipe;S4, B part of raw materials is put into the second high-speed mixer to heat mix, then cold mix, and is formed by the second extruder;S5, the outer wall of the inner layer pipe is sprayed with foaming agent, and passes through the forming opening of the second extruder, and is cooled and formed, the present application relates to the technical field of PVC water supply pipe.

[0004] Although the existing PVC water supply pipe improves the strength and pressure resistance of water supply pipe to some extent, the strength still needs to be further improved, and therefore we propose a wear-resistant water supply pipe. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a wear-resistant water supply pipe to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a wear-resistant water supply pipe, which comprises straight pipes, connecting pipes and elbow pipes, the end portions of the straight pipes are each provided with a connecting flange, the end portions of the connecting pipes are each provided with a connecting flange, the end portions of the elbow pipes are each provided with a connecting flange, and adjacent pipes are fixed by connecting flanges and locking bolts;The connecting flange comprises a flange plate, an annular step is arranged on the flange plate at the pipe, and an annular protrusion is arranged on the outer side of the flange plate.

[0007] Preferably, a filter screen is arranged on the annular step of the flange plate, and the filter screen is clamped on the annular step.

[0008] Preferably, a sealing gasket is provided between the connected flange plates, and the sealing gasket is located at the annular protrusion.

[0009] Preferably, the straight pipe, connecting pipe, and bend each include a wear-resistant layer, an inner polyvinyl chloride layer, a metal layer, and an outer polyvinyl chloride layer, which are arranged sequentially from the inside to the outside.

[0010] Preferably, the metal layer is made of steel wire mesh.

[0011] Preferably, the wear-resistant layer is a ceramic wear-resistant layer.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. A filter screen is installed at the annular step of the flange plate. The filter screen is clipped at the annular step and can play a certain role in filtration. Foreign objects can be cleaned by disassembling the connecting flange. A sealing gasket is set between the connecting flange plates. The sealing gasket is located at the annular protrusion and can improve the sealing effect between the pipes.

[0014] 2. The metal layer uses steel wire mesh; the wear-resistant layer uses ceramic wear-resistant layer. The wear-resistant layer improves the wear resistance of the pipe, and the metal layer improves the strength and pressure resistance of the pipe. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is the front view of this utility model;

[0018] Figure 3 This is a cross-sectional view of the present invention AA;

[0019] Figure 4 This is a schematic diagram of the pipe structure of this utility model.

[0020] In the diagram: 1. Connecting flange; 2. Straight pipe; 3. Connecting pipe; 4. Bend; 5. Sealing gasket; 11. Flange plate; 12. Annular step; 13. Annular protrusion; 21. Wear-resistant layer; 22. Inner PVC layer; 23. Metal layer; 24. Outer PVC layer. Detailed Implementation

[0021] In order to make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the utility model embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment. Obviously, the described embodiment is part of the utility model, rather than all the embodiments. Based on the embodiment in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents the selected embodiments of the utility model.

[0022] Please refer to Figures 1-4 In the utility model embodiment, a wear-resistant water supply pipe comprises a straight pipe 2, a connecting pipe 3 and an elbow pipe 4, the end of the straight pipe 2 is provided with a connecting flange 1, the end of the connecting pipe 3 is provided with a connecting flange 1, the end of the elbow pipe 4 is provided with a connecting flange 1, and adjacent pipes are fixed through the connecting flanges 1 and locking bolts.

[0023] The connecting flange 1 comprises a flange plate 11, the flange plate 11 is provided with an annular step 12 at the pipe, and the outer side of the flange plate 11 is provided with an annular protrusion 13; a filter screen is installed at the annular step 12 of the flange plate 11, the filter screen is clamped at the annular step 12, a certain degree of filtering effect can be achieved through the filter screen, and foreign matters can be cleaned by disassembling the connecting flange 1; sealing gaskets 5 are arranged between the flange plates 11, the sealing gaskets 5 are located at the annular protrusions 13, and the sealing effect between pipes can be improved through the sealing gaskets 5.

[0024] The straight pipe 2, the connecting pipe 3 and the elbow pipe 4 all comprise a wear-resistant layer 21, an inner polyvinyl chloride layer 22, a metal layer 23 and an outer polyvinyl chloride layer 24, which are sequentially arranged from inside to outside; the metal layer 23 is made of a steel wire mesh; the wear-resistant layer 21 is made of a ceramic wear-resistant layer, the wear-resistant layer improves the wear-resistant effect of the pipe, and the metal layer improves the strength and compression resistance of the pipe.

[0025] The working principle of the utility model is that a filter screen is installed at the annular step 12 of the flange plate 11, the filter screen is clamped at the annular step 12, a certain degree of filtering effect can be achieved through the filter screen, and foreign matters can be cleaned by disassembling the connecting flange 1; sealing gaskets 5 are arranged between the flange plates 11, the sealing gaskets 5 are located at the annular protrusions 13, and the sealing effect between pipes can be improved through the sealing gaskets 5.

[0026] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A wear-resistant water supply pipe, comprising a straight pipe (2), a connecting pipe (3), and a bend (4), characterized in that: The ends of the straight pipe (2) are all equipped with connecting flanges (1), the ends of the connecting pipe (3) are all equipped with connecting flanges (1), the ends of the bent pipe (4) are all equipped with connecting flanges (1), and adjacent pipes are fixed together by connecting flanges (1) and locking bolts. The connecting flange (1) includes a flange plate (11), the flange plate (11) has an annular step (12) at the pipe, and an annular protrusion (13) is provided on the outer side of the flange plate (11).

2. The wear-resistant water supply pipe according to claim 1, characterized in that: A filter screen is installed at the annular step (12) of the flange plate (11), and the filter screen is clipped at the annular step (12).

3. The wear-resistant water supply pipe according to claim 1, characterized in that: A sealing gasket (5) is provided between the connected flange plates (11), and the sealing gasket (5) is located at the annular protrusion (13).

4. The wear-resistant water supply pipe according to claim 1, characterized in that: The straight pipe (2), connecting pipe (3) and bend (4) each include a wear-resistant layer (21), an inner polyvinyl chloride layer (22), a metal layer (23) and an outer polyvinyl chloride layer (24), which are arranged sequentially from the inside to the outside.

5. The wear-resistant water supply pipe according to claim 4, characterized in that: The metal layer (23) is made of steel wire mesh.

6. The wear-resistant water supply pipe according to claim 4, characterized in that: The wear-resistant layer (21) is a ceramic wear-resistant layer.

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