Anti-scale wear-resistant polypropylene tripropylene pipe

Abstract

The utility model relates to an anti-scale and wear-resistant tripropylene polypropylene pipe which comprises a bent pipe body, straight-pipe-shaped threaded connection pipes are formed at the two ends of the bent pipe body respectively, regular hexagonal limiting convex rings are formed on the outer walls between the threaded connection pipes and the bent pipe body, and the angle of the bent pipe body is an obtuse angle. An inclined cleaning connecting pipe is formed in the middle of the inner arc face of the bent pipe body, and a screw cap is fixed to a pipe opening of the cleaning connecting pipe in a screwed mode. A longitudinal flow guide connecting pipe is formed on the pipe wall, close to the elbow body, of the cleaning connecting pipe, and the tail end of the flow guide connecting pipe is in threaded connection with a sealing cap. According to the tripropylene polypropylene elbow pipe, dirt accumulated in the elbow pipe can be effectively reduced, blockage is reduced, and meanwhile, cleaning and dredging are convenient when blockage occurs.

Description

Technical Field:

[0001] The utility model relates to the technical field of plastic pipes, and more specifically to a scratch-resistant and scale-resistant polypropylene random copolymer pipe. Background Art:

[0002] The polypropylene random copolymer pipe, also known as PP-R pipe, random copolymer polypropylene pipe or PPR pipe, is a pipe made of random copolymer polypropylene. Compared with traditional cast iron pipes, galvanized steel pipes, cement pipes and other pipes, PPR pipes have the advantages of energy conservation, material saving, environmental protection, light weight, high strength, corrosion resistance, smooth inner wall without scaling, simple construction and maintenance, long service life, etc., and are widely used in construction fields such as building water supply and drainage, urban and rural water supply and drainage, urban gas, power and optical cable sheaths, industrial fluid transportation, agricultural irrigation, etc., as well as in municipal, industrial and agricultural fields.

[0003] At present, some plastic pipes are also used in the building interior drain pipes. Among them, there is a elbow pipe with a cleaning interface in the drain pipe. The elbow pipe connects other drain pipes to the main drain pipe. The existing elbow pipes are generally right-angle elbow pipes. During the drainage process, dirt is easily attached to the inside of the right-angle elbow pipe, especially on the inner wall of the outer arc surface side of the elbow pipe. In order to facilitate cleaning, a cleaning interface is provided at the outer arc surface of the right-angle elbow pipe, but the cleaning interface will further cause the accumulation of dirt. Therefore, it is necessary to improve the elbow pipe with this structure, and at the same time, PPR pipes can be used to utilize the performance of PPR pipes to reduce the accumulation of dirt and reduce the blockage problem. Summary of the Utility Model:

[0004] The purpose of the utility model is to provide a scratch-resistant and scale-resistant polypropylene random copolymer pipe for the deficiencies of the existing technology. The polypropylene random copolymer elbow pipe of the utility model can effectively reduce the accumulation of dirt in the elbow pipe, reduce the occurrence of blockage, and at the same time, it is convenient to clean and dredge when blocked.

[0005] A scratch-resistant and scale-resistant polypropylene random copolymer pipe includes an elbow pipe body. Straight pipe-shaped threaded connectors are formed at both ends of the elbow pipe body. A regular hexagonal limiting convex ring is formed on the outer wall between the threaded connector and the elbow pipe body. The angle of the elbow pipe body is an obtuse angle.

[0006] An inclined cleaning connector is formed in the middle of the inner arc surface of the elbow pipe body. A rotary cover is screwed and fixed to the pipe orifice of the cleaning connector.

[0007] A longitudinal diversion connector is formed on the pipe wall of the cleaning connector close to the elbow pipe body. A sealing cap is screwed to the end of the diversion connector.

[0008] Preferably, the threaded connector at the upper end of the elbow pipe body is vertical, the cleaning connector is inclined upward, and the length of the cleaning connector is less than half of the length of the elbow pipe body.

[0009] Preferably, the screw cap is located obliquely above the diversion connecting pipe, and an internal thread is formed on the inner wall of the cleaning connecting pipe nozzle;

[0010] The screw cap includes a cylindrical plug cap, an external thread is formed on the outer wall of the plug cap, a circular concave platform is formed on the upper end surface of the plug cap, and a cross-shaped handle is formed in the concave platform; a retaining ring is formed on the outer wall of the upper end of the screw cap, and the retaining ring abuts against the end surface of the cleaning connecting pipe nozzle.

[0011] Preferably, the elbow body, the cleaning connecting pipe, the diversion connecting pipe and the screw cap are all made of polypropylene, a sealing gasket is clamped between the retaining ring and the end surface of the cleaning connecting pipe nozzle, and the sealing gasket is inserted on the plug cap.

[0012] Preferably, the inner diameter of the elbow body is equal to the inner diameter of the threaded connecting pipe, the inner diameter of the threaded connecting pipe is greater than the inner diameter of the cleaning connecting pipe, and the inner diameter of the cleaning connecting pipe is greater than the inner diameter of the diversion connecting pipe.

[0013] Preferably, the central axis of the diversion connecting pipe on the elbow body is perpendicular to the central axis of the cleaning connecting pipe.

[0014] The beneficial effects of the present utility model are as follows:

[0015] This polypropylene elbow can effectively reduce the accumulation of dirt in the elbow and reduce the occurrence of blockage. At the same time, when blockage occurs, it is also convenient to clean and dredge. Description of the drawings:

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0017] Figure 2 is a side view structural schematic diagram of the present utility model;

[0018] Figure 3 is Figure 2 the cross-sectional schematic diagram at A-A in

[0019] In the figure: 1. Elbow body; 11. Limit convex ring; 12. Threaded connecting pipe; 13. Cleaning connecting pipe; 14. Diversion connecting pipe; 2. Screw cap; 21. Handle; 3. Sealing cap. Specific embodiments:

[0020] Embodiment: As shown in Figures 1 to 3 shown, an anti-scaling and wear-resistant polypropylene pipe includes an elbow body 1. Straight tubular threaded connecting pipes 12 are respectively formed at both ends of the elbow body 1. The threads on the threaded connecting pipe 12 are located on the outer wall of the threaded connecting pipe 12. A regular hexagonal limit convex ring 11 is formed on the outer wall between the threaded connecting pipe 12 and the elbow body 1. The angle of the elbow body 1 is an obtuse angle;

[0021] In the middle of the inner arc surface of the elbow body 1, an inclined cleaning connection pipe 13 is formed. A rotary cover 2 is screwed and fixed at the pipe orifice of the cleaning connection pipe 13; the cleaning connection pipe 13 is sealed by the rotary cover 2;

[0022] On the pipe wall of the cleaning connection pipe 13 close to the elbow body 1, a longitudinal diversion connection pipe 14 is formed. A sealing cap 3 is screwed at the end of the diversion connection pipe 14, and multiple anti-slip grooves are arranged on the outer wall of the sealing cap 3.

[0023] The threaded connection pipe 12 at the upper end of the elbow body 1 is vertical, the cleaning connection pipe 13 is inclined upward, and the length of the cleaning connection pipe 13 is less than half of the length of the elbow body 1.

[0024] The rotary cover 2 is located obliquely above the diversion connection pipe 14, and internal threads are formed on the inner wall of the pipe orifice of the cleaning connection pipe 13; that is, the pipe orifice of the cleaning connection pipe 13 is located on the upper side of the pipe orifice of the diversion connection pipe 14. When cleaning, a small amount of accumulated water in the elbow first flows out from the diversion connection pipe 14.

[0025] The rotary cover 2 includes a cylindrical plug cover. External threads are formed on the outer wall of the plug cover. A circular concave platform is formed on the upper end surface of the plug cover, and a "cross"-shaped handle 21 is formed in the concave platform; a retaining ring is formed on the outer wall of the upper end of the rotary cover 2, and the retaining ring abuts against the end surface of the pipe orifice of the cleaning connection pipe 13. The existence of the handle 21 facilitates the installation and disassembly of the rotary cover 2.

[0026] The elbow body 1, the cleaning connection pipe 13, the diversion connection pipe 14 and the rotary cover 2 are all made of polypropylene random copolymer. A sealing gasket is clamped between the retaining ring and the end surface of the pipe orifice of the cleaning connection pipe 13. The sealing gasket is inserted on the plug cover. Based on the sealing gasket, effective sealing is achieved, and the material is all polypropylene random copolymer, that is, pp-r material, which has wear resistance.

[0027] The inner pipe diameter of the elbow body 1 is equal to the inner pipe diameter of the threaded connection pipe 12. The inner pipe diameter of the threaded connection pipe 12 is greater than the inner pipe diameter of the cleaning connection pipe 13. The inner pipe diameter of the cleaning connection pipe 13 is greater than the inner pipe diameter of the diversion connection pipe 14.

[0028] The central axis of the diversion connection pipe 14 on the elbow body 1 is perpendicular to the central axis of the cleaning connection pipe 13.

[0029] Working principle: This structure is a polypropylene random copolymer pipe for anti-scaling and wear resistance, specifically a polypropylene random copolymer elbow. The elbow is made of polypropylene random copolymer, which has good anti-corrosion and wear resistance. At the same time, the inner wall of the manufactured elbow is smooth and not easy to scale;

[0030] At the same time, the angle of the elbow body 1 is changed from a right angle to an obtuse angle, which can reduce the resistance to water flow and reduce the accumulation of dirt in the water adhering to the elbow body 1;

[0031] However, considering the long term, there will always be a problem of blockage inside the elbow pipe. Therefore, a cleaning connection pipe 13 is also added. However, the cleaning connection pipe 13 is arranged on the inner arc surface of the elbow pipe body 1, and the position of the cleaning connection pipe 13 is not likely to cause dirt adhesion and accumulation.

[0032] The described embodiments are used to illustrate the present invention by way of example and not to limit the present invention. Any person skilled in the art can modify the described embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of the right protection of the present invention should be as listed in the claims of the present invention.

Claims

1. A scale and wear resistant polypropylene pipe, comprising an elbow body (1). Straight pipe-shaped threaded connectors (12) are respectively formed at both ends of the elbow body (1). A regular hexagonal limiting convex ring (11) is formed on the outer wall between the threaded connector (12) and the elbow body (1). It is characterized in that: The angle of the elbow body (1) is an obtuse angle; In the middle of the inner arc surface of the elbow body (1), an inclined cleaning connection pipe (13) is formed, and a screw cap (2) is fixedly connected to the pipe orifice of the cleaning connection pipe (13); On the pipe wall of the cleaning connection pipe (13) close to the elbow body (1), a longitudinal diversion connection pipe (14) is formed, and a sealing cap (3) is screwed to the end of the diversion connection pipe (14).

2. The anti-scaling and wear-resistant polypropylene pipe according to claim 1, wherein: The threaded connection pipe (12) at the upper end of the elbow body (1) is vertical, the cleaning connection pipe (13) is inclined upward, and the length of the cleaning connection pipe (13) is less than half of the length of the elbow body (1).

3. The anti-scaling and wear-resistant polypropylene pipe according to claim 2, characterized in that: The screw cap (2) is located obliquely above the diversion connection pipe (14), and internal threads are formed on the inner wall of the pipe orifice of the cleaning connection pipe (13); The screw cap (2) includes a cylindrical plug cap. External threads are formed on the outer wall of the plug cap. A circular concave platform is formed on the upper end surface of the plug cap, and a "cross"-shaped handle (21) is formed in the concave platform; a retaining ring is formed on the outer wall of the upper end of the screw cap (2), and the retaining ring abuts against the end surface of the pipe orifice of the cleaning connection pipe (13).

4. The anti-scaling and wear-resistant polypropylene pipe according to claim 3, characterized in that: The elbow body (1), the cleaning connection pipe (13), the diversion connection pipe (14) and the screw cap (2) are all made of polypropylene propylene. A sealing washer is clamped between the retaining ring and the end surface of the pipe orifice of the cleaning connection pipe (13), and the sealing washer is inserted over the plug cap.

5. A terpolypropylene pipe with scale prevention and wear resistance according to claim 1, characterized in that: The inner pipe diameter of the elbow body (1) is equal to the inner pipe diameter of the threaded connection pipe (12). The inner pipe diameter of the threaded connection pipe (12) is greater than the inner pipe diameter of the cleaning connection pipe (13). The inner pipe diameter of the cleaning connection pipe (13) is greater than the inner pipe diameter of the diversion connection pipe (14).

6. The anti-scaling and wear-resistant polypropylene pipe according to claim 5, characterized in that: The central axis of the diversion connection pipe (14) on the elbow body (1) is perpendicular to the central axis of the cleaning connection pipe (13).

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