Temperature-resistant and corrosion-resistant MPP pipe connecting structure

Abstract

The utility model relates to the technical field of MPP pipe connecting pieces, in particular to a temperature-resistant and corrosion-resistant MPP pipe connecting structure which comprises a temperature-resistant and corrosion-resistant upper sleeve, and a temperature-resistant and corrosion-resistant lower sleeve is arranged below the temperature-resistant and corrosion-resistant upper sleeve. The front side face and the rear side face of the temperature-resistant and corrosion-resistant upper sleeve and the front side face and the rear side face of the temperature-resistant and corrosion-resistant lower sleeve are each fixedly provided with a front fixing protruding block and a rear fixing protruding block which are symmetrical to each other, the upper fixing protruding block and the lower fixing protruding block are fixedly connected through a fastening screw, and a central compression-resistant supporting pipe is arranged between the temperature-resistant and corrosion-resistant upper sleeve and the temperature-resistant and corrosion-resistant lower sleeve. And the central compression-resistant supporting pipe is inserted into the MPP pipe and used for supporting operation, a middle limiting ring is fixedly installed on the outer annular side face of the central compression-resistant supporting pipe, and a front supporting seat and a rear supporting seat which are symmetrical to each other are arranged below the temperature-resistant and corrosion-resistant lower sleeve. The utility model is convenient for stable connection operation and convenient for assembly and use.

Description

Technical Field

[0001] The utility model relates to the technical field of MPP pipe connectors, in particular to a temperature-resistant and corrosion-resistant MPP pipe connection structure. Background Art

[0002] MPP is also called modified polypropylene. As a new type of environmentally friendly plastic pipe material, MPP pipes are widely used in power, communications, municipal engineering and other engineering fields due to their excellent heat resistance, corrosion resistance, good electrical properties and processing performance. When connecting MPP pipes, the corresponding connection structure is usually used. There are many types of connection structures on the market. Most of them are made of high temperature resistant and corrosion resistant plastic materials, which is conducive to extending their service life.

[0003] However, when the conventional connection structure is used, it is put on the pipe and locked to complete the connection operation between the two pipes. At this time, as the connection structure is locked, the pipe end is easily squeezed and deformed during the locking process due to the lack of further pressure-resistant support components inside the pipe. In severe cases, the pipe end may be squeezed and ruptured, affecting the stability of the connection and causing inconvenience to the user. In view of this, we propose a temperature-resistant and corrosion-resistant MPP pipe connection structure. Utility Model Content

[0004] The purpose of the utility model is to provide a temperature-resistant and corrosion-resistant MPP pipe connection structure to solve the defects mentioned in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A heat-resistant and corrosion-resistant MPP pipe connection structure comprises a heat-resistant and corrosion-resistant upper casing, a heat-resistant and corrosion-resistant lower casing is arranged below the heat-resistant and corrosion-resistant upper casing, two front and rear symmetrical fixing protrusions are fixedly installed on the front and rear side surfaces of the heat-resistant and corrosion-resistant upper casing and the heat-resistant and corrosion-resistant lower casing, and the upper and lower fixing protrusions are fixedly connected by fastening screws, and a central pressure-resistant support tube is arranged between the heat-resistant and corrosion-resistant upper casing and the heat-resistant and corrosion-resistant lower casing, and the central pressure-resistant support tube is inserted into the MPP pipe for supporting operation.

[0007] Preferably, two groups of mutually symmetrical annular grooves are provided on the inner walls of the heat-resistant and corrosion-resistant upper casing and the heat-resistant and corrosion-resistant lower casing, and the annular grooves are used for the clamping and assembly operation of the MPP pipe.

[0008] Preferably, a sealing gasket is provided on the groove wall of the annular groove, and the sealing gasket is used for sealing operation.

[0009] Preferably, an intermediate limiting ring is fixedly mounted on the outer annular side surface of the central pressure-resistant support tube, and the intermediate limiting ring is located at half the length of the central pressure-resistant support tube, so as to limit the position between the two MPP tubes.

[0010] Preferably, two mutually symmetrical front and rear sealing rings are sleeved on the central pressure-resistant support tube, and the sealing rings are against the side surfaces of the middle limiting ring to improve the sealing effect.

[0011] Preferably, two mutually symmetrical front and rear support seats are arranged below the heat-resistant and corrosion-resistant lower casing, an arc-shaped hole is arranged on the support seat, the heat-resistant and corrosion-resistant lower casing rests on the hole wall of the arc-shaped hole, and the fixed protrusion is fixedly installed on the support seat, so as to facilitate horizontal support operation using the support seat.

[0012] Preferably, two front and rear symmetrical connecting rods are fixedly installed between the two support seats, and the connecting rods are used for pulling and limiting operations.

[0013] Preferably, a plurality of positioning holes arranged along the vertical direction are provided on the bottom wall of the arc-shaped hole, and a positioning column is fixedly installed at the end of the heat-resistant and corrosion-resistant lower casing at a position opposite to the positioning hole. The positioning column is located in the positioning hole and is plugged into and matched with the positioning hole, so as to facilitate the guided installation operation of the heat-resistant and corrosion-resistant lower casing.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The utility model has high temperature resistance and corrosion resistance by providing a heat-resistant and corrosion-resistant upper casing and a heat-resistant and corrosion-resistant lower casing. In addition, after the heat-resistant and corrosion-resistant upper casing and the heat-resistant and corrosion-resistant lower casing are closed and fixed, the two MPP pipes are compressed and fixed. Finally, the central pressure-resistant support pipe is provided to support the inside of the MPP pipe, which plays a role of pressure-resistant support and protection, so that after the heat-resistant and corrosion-resistant upper casing and the heat-resistant and corrosion-resistant lower casing are closed, the MPP pipe will not be fractured.

[0016] 2. The utility model can realize horizontal support operation of the heat-resistant and corrosion-resistant lower casing by means of the support seat, which is convenient for horizontal erection operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 3 It is one of the partial structural schematic diagrams of the utility model;

[0020] Figure 4 For this utility model Figure 3 The enlarged view of point A in the middle;

[0021] Figure 5 This is the second partial structural schematic diagram of the utility model.

[0022] The meaning of each number in the figure is:

[0023] 1. Heat-resistant and corrosion-resistant upper casing; 10. Heat-resistant and corrosion-resistant lower casing; 11. Annular groove; 12. Sealing gasket; 13. Fixing protrusion; 14. Positioning plug;

[0024] 2. Central compression support tube; 20. Intermediate limiting ring; 21. Sealing ring;

[0025] 3. Support seat; 30. Arc hole; 31. Connecting rod; 32. Positioning socket. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-Figure 5 The utility model provides a technical solution: a heat-resistant and corrosion-resistant MPP pipe connection structure, comprising a heat-resistant and corrosion-resistant upper casing 1, a heat-resistant and corrosion-resistant lower casing 10 is arranged below the heat-resistant and corrosion-resistant upper casing 1, and two front and rear symmetrical fixing protrusions 13 are fixedly installed on the front and rear side surfaces of the heat-resistant and corrosion-resistant upper casing 1 and the heat-resistant and corrosion-resistant lower casing 10, and the upper and lower fixing protrusions 13 are fixedly connected by fastening screws, which is convenient for fixing operation;

[0028] Specifically, a central pressure-resistant support pipe 2 is arranged between the heat-resistant and corrosion-resistant upper casing 1 and the heat-resistant and corrosion-resistant lower casing 10. The central pressure-resistant support pipe 2 is inserted into the MPP pipe for supporting operation, which plays the effect of supporting the MPP pipe from the inside, thereby preventing the heat-resistant and corrosion-resistant upper casing 1 and the heat-resistant and corrosion-resistant lower casing 10 from fracturing the MPP pipe when they are tightened.

[0029] In this embodiment, the heat-resistant and corrosion-resistant upper casing 1 and the heat-resistant and corrosion-resistant lower casing 10 can be made of polytetrafluoroethylene material. Polytetrafluoroethylene material is a very common high-temperature resistant water pipe material. It has extremely strong resistance to chemical corrosion, good flame retardant properties and high temperature stability, which is conducive to extending the service life.

[0030] Specifically, two groups of mutually symmetrical annular grooves 11 are provided on the inner walls of the heat-resistant and corrosion-resistant upper casing 1 and the heat-resistant and corrosion-resistant lower casing 10, and the annular grooves 11 are used for the clamping and assembly operation of the MPP pipe; a sealing gasket 12 is provided on the groove wall of the annular groove 11, and the sealing gasket 12 is used for sealing operation.

[0031] Furthermore, an intermediate limiting ring 20 is fixedly installed on the outer annular side of the central pressure-resistant support tube 2. The intermediate limiting ring 20 is located at half the length of the central pressure-resistant support tube 2, which has the effect of limiting the position between the two MPP tubes. Two front and rear symmetrical sealing rings 21 are sleeved on the central pressure-resistant support tube 2, and the sealing rings 21 are against the side of the intermediate limiting ring 20 to improve the sealing effect.

[0032] In addition, two symmetrical front and rear support seats 3 are arranged below the heat-resistant and corrosion-resistant lower casing 10, and an arc-shaped hole 30 is arranged on the support seat 3. The heat-resistant and corrosion-resistant lower casing 10 is against the hole wall of the arc-shaped hole 30, and the fixed protrusion 13 is fixedly installed on the support seat 3, which is convenient for using the support seat 3 to perform horizontal support operations.

[0033] It is worth noting that two front and rear symmetrical connecting rods 31 are fixedly installed between the two supporting seats 3, and the connecting rods 31 are used for pulling and limiting operations.

[0034] It is worth noting that a plurality of positioning holes 32 arranged along the vertical direction are provided on the bottom wall of the arc-shaped hole 30, and a positioning column 14 is fixedly installed at the end of the heat-resistant and corrosion-resistant lower casing 10 at a position opposite to the positioning hole 32. The positioning column 14 is located in the positioning hole 32 and is plugged into and matched with the positioning hole 32, so as to facilitate the guided installation operation of the heat-resistant and corrosion-resistant lower casing 10.

[0035] When the heat-resistant and corrosion-resistant MPP pipe connection structure of the utility model is in use, the sealing ring 21 is first sleeved on the central pressure-resistant support tube 2, and then the two ends of the central pressure-resistant support tube 2 are inserted into the MPP pipe to ensure that the ends of the MPP pipe are against the sealing ring 21, and then the heat-resistant and corrosion-resistant upper casing 1 and the heat-resistant and corrosion-resistant lower casing 10 are sleeved on the MPP pipe part, and then the fixing protrusion 13 is fixed with a fastening screw to realize the compression operation of the MPP pipe and complete the connection. When necessary, the support seat 3 can be fixedly installed on the bottom of the heat-resistant and corrosion-resistant lower casing 10 to realize the support operation using the support seat 3.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. The heat-resistant and corrosion-resistant MPP pipe connection structure is characterized by: The invention comprises a heat-resistant and corrosion-resistant upper casing (1), a heat-resistant and corrosion-resistant lower casing (10) is arranged below the heat-resistant and corrosion-resistant upper casing (1), two mutually symmetrical fixing protrusions (13) are fixedly installed on the front and rear side surfaces of the heat-resistant and corrosion-resistant upper casing (1) and the heat-resistant and corrosion-resistant lower casing (10), and the upper and lower fixing protrusions (13) are fixedly connected by fastening screws, and a central pressure-resistant support pipe (2) is arranged between the heat-resistant and corrosion-resistant upper casing (1) and the heat-resistant and corrosion-resistant lower casing (10), and the central pressure-resistant support pipe (2) is inserted into the MPP pipe for supporting operation.

2. The heat-resistant and corrosion-resistant MPP pipe connection structure according to claim 1 is characterized in that: Two groups of mutually symmetrical annular grooves (11) are arranged on the inner walls of the heat-resistant and corrosion-resistant upper casing (1) and the heat-resistant and corrosion-resistant lower casing (10), and the annular grooves (11) are used for the clamping and assembly operation of the MPP pipe.

3. The heat-resistant and corrosion-resistant MPP pipe connection structure according to claim 2 is characterized in that: A sealing gasket (12) is arranged on the groove wall of the annular groove (11), and the sealing gasket (12) is used for sealing operation.

4. The heat-resistant and corrosion-resistant MPP pipe connection structure according to claim 1 is characterized in that: An intermediate limiting ring (20) is fixedly mounted on the outer annular side surface of the central pressure-resistant support tube (2), and the intermediate limiting ring (20) is located at a position at half the length of the central pressure-resistant support tube (2).

5. The heat-resistant and corrosion-resistant MPP pipe connection structure according to claim 4 is characterized in that: The central pressure-resistant support tube (2) is sleeved with two mutually symmetrical front and rear sealing rings (21), and the sealing rings (21) are against the side surface of the middle limiting ring (20).

6. The heat-resistant and corrosion-resistant MPP pipe connection structure according to claim 1, characterized in that: Two mutually symmetrical support seats (3) are arranged at the front and rear sides below the heat-resistant and corrosion-resistant lower casing (10); an arc-shaped hole (30) is arranged on the support seat (3); the heat-resistant and corrosion-resistant lower casing (10) abuts against the hole wall of the arc-shaped hole (30); and the fixing protrusion (13) is fixedly mounted on the support seat (3).

7. The heat-resistant and corrosion-resistant MPP pipe connection structure according to claim 6 is characterized in that: Two mutually symmetrical front and rear connecting rods (31) are fixedly installed between the two support seats (3), and the connecting rods (31) are used for pulling and limiting operations.

8. The heat-resistant and corrosion-resistant MPP pipe connection structure according to claim 7 is characterized in that: A plurality of positioning holes (32) arranged along the vertical direction are arranged on the bottom wall of the arc-shaped hole (30); a positioning column (14) is fixedly installed at the end of the heat-resistant and corrosion-resistant lower casing (10) at a position directly opposite to the positioning hole (32); the positioning column (14) is located in the positioning hole (32) and is plugged into and matched with the positioning hole (32).

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