Corrosion-resistant polytetrafluoroethylene lining pipe

Abstract

The corrosion-resistant polytetrafluoroethylene lining pipe comprises a first flange plate and a buffering assembly, a lining pipe body is fixedly installed at the left end of the first flange plate, and the buffering assembly used for reducing the acting force of the water hammer effect is installed on the inner wall of the lining pipe body. The buffering assembly comprises a fixing ring, a limiting block, a sliding rod, a sliding block, a sleeve and a buffering spring, the limiting block is fixedly installed in the fixing ring, the sliding rod is vertically arranged on the right side of the limiting block, the sliding block is fixedly installed at the tail end of the sliding rod, the outer wall of the sliding block is sleeved with the sleeve, and the buffering spring is fixedly installed in the sleeve. The left end of the buffer spring is fixed to the sliding block, a lining pipe is fixedly installed at the bottom of the sleeve, and the outer diameter of the lining pipe is smaller than the inner diameter of the lining pipe body. According to the corrosion-resistant polytetrafluoroethylene lining pipe, the impact force of water can be reduced, the service life of a pipeline can be prolonged, and meanwhile the length of the lining pipe can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of polytetrafluoroethylene lined pipes, in particular to a corrosion-resistant polytetrafluoroethylene lined pipe. Background Art

[0002] Polytetrafluoroethylene, commonly known as the king of plastics, is a high molecular polymer made from tetrafluoroethylene as a monomer. It is white, waxy, translucent, heat-resistant and cold-resistant. It can be used for a long time at -180 to 260°C. This material is resistant to acids, alkalis, and various organic solvents, and is almost insoluble in all solvents. The inner lining made of polytetrafluoroethylene can be against the inner wall of the existing damaged pipeline to prevent gas or liquid leakage and extend the service life of the pipeline.

[0003] For example, the patent document with application number CN201720054874.4 discloses a corrosion-resistant polytetrafluoroethylene lined pipe. The utility model corrosion-resistant polytetrafluoroethylene lined pipe is made by extrusion molding of the polytetrafluoroethylene lined pipe, which can reduce the use of flanges and improve the connection pin rate and connection strength of the lined pipe. However, since there is no anti-deformation structure in the existing lined pipe, the strength of the lined pipe is poor. When sewage impacts, the lined pipe is easily deformed, which affects the service life of the lined pipe.

[0004] Therefore, in view of this, the existing structural deficiencies are studied and improved, and a corrosion-resistant polytetrafluoroethylene lined pipe is proposed. Utility Model Content

[0005] The utility model aims to provide a corrosion-resistant polytetrafluoroethylene lined pipe to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a corrosion-resistant polytetrafluoroethylene liner pipe, comprising a first flange and a buffer assembly, a liner body is fixedly installed on the left end of the first flange, the buffer assembly for reducing the force of the water hammer effect is installed on the inner wall of the liner body, the buffer assembly comprises a fixing ring, a limit block, a sliding rod, a slider, a sleeve and a buffer spring, a limit block is fixedly installed inside the fixing ring, and a sliding rod is vertically arranged on the right side of the limit block, a slider is fixedly installed on the end of the sliding rod, and a sleeve is provided on the outer wall of the slider, a buffer spring is fixedly installed inside the sleeve, and the left end of the buffer spring is fixed to the slider.

[0007] Preferably, an inner liner pipe is fixedly mounted on the bottom of the sleeve, and the outer diameter of the inner liner pipe is smaller than the inner diameter of the liner pipe body.

[0008] Preferably, a partition is longitudinally arranged inside the inner liner tube, and the partition is arranged in an annular structure as a whole.

[0009] Preferably, a thread groove is provided on the outer wall of the right end of the liner body, and the liner body is threadedly connected to a threaded sleeve through the thread groove.

[0010] Preferably, a second flange is fixedly mounted on the right end of the threaded sleeve, and a mounting hole is formed on the outer wall of the second flange.

[0011] Preferably, a cavity is provided inside the second flange, and the inner diameter of the cavity is in close contact with the outer diameter of the liner body.

[0012] Preferably, a sealing gasket is fixedly installed on the right side of the second flange, and the sealing gasket is arranged in a "ladder" shape as a whole.

[0013] Compared with the prior art, the utility model has the beneficial effect that the corrosion-resistant polytetrafluoroethylene liner pipe can not only reduce the impact force of water and increase the service life of the pipeline, but also can adjust the length of the liner pipe.

[0014] 2. The utility model sets a buffer component so that when the partition set inside the inner liner is pushed by the "water hammer" effect, the inner liner pulls or pushes the sleeve fixed on the outer wall to move, and when the sleeve moves, the gap between the buffer spring and the slider increases, and the sleeve is pulled back to the original position by the elastic force of the buffer spring for buffering. When the sleeve and the slider move and rub, a resistance similar to a damper is generated, and this resistance offsets the impact force of the buffer spring when it is reset, so that the buffer spring pulls the sleeve to reset more smoothly, thereby achieving the purpose of reducing the impact force of water;

[0015] 3. The utility model cooperates with the setting of the second flange plate through the liner body, so that the second flange plate can be quickly separated from the liner body provided with a threaded groove through the threaded sleeve, so that the inner liner tube inside the liner body is exposed, and through subsequent expansion or cutting, the inner liner tube can better meet the use requirements, thereby achieving the purpose of adjusting the length of the inner liner tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a corrosion-resistant polytetrafluoroethylene lined pipe of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of a liner pipe body of a corrosion-resistant polytetrafluoroethylene liner pipe of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a buffer component of a corrosion-resistant polytetrafluoroethylene lined pipe of the utility model;

[0019] Figure 4 The utility model is a schematic diagram of the cross-sectional structure of a second flange of a corrosion-resistant polytetrafluoroethylene lined pipe.

[0020] In the figure: 1. first flange; 2. liner body; 3. buffer assembly; 301. fixing ring; 302. limit block; 303. slide rod; 304. slider; 305. sleeve; 306. buffer spring; 4. inner liner; 5. partition; 6. threaded groove; 7. threaded sleeve; 8. second flange; 9. mounting hole; 10. cavity; 11. sealing gasket. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-Figure 3 As shown, a corrosion-resistant polytetrafluoroethylene liner pipe includes a first flange 1 and a buffer assembly 3. A liner body 2 is fixedly installed on the left end of the first flange 1. The buffer assembly 3 for reducing the force of the water hammer effect is installed on the inner wall of the liner body 2. The buffer assembly 3 includes a fixing ring 301, a limit block 302, a slide rod 303, a slider 304, a sleeve 305 and a buffer spring 306. The limit block 302 is fixedly installed inside the fixing ring 301, and a slide rod 303 is vertically arranged on the right side of the limit block 302. The slider 304 is fixedly installed on the end of the slide rod 303, and the outer wall of the slider 304 is sleeved with a sleeve 305. The buffer spring 306 is fixedly installed inside the sleeve 305, and the left end of the buffer spring 306 is fixed to the slider 304.

[0023] When the partition 5 arranged inside the inner lining tube 4 is pushed by the "water hammer" effect, the inner lining tube 4 pulls or pushes the sleeve 305 fixed on the outer wall to move, and while the sleeve 305 moves, the gap between the buffer spring 306 and the slider 304 increases, and the sleeve 305 is pulled back to its original position by the elastic force of the buffer spring 306 for buffering. When the sleeve 305 and the slider 304 move and rub, a resistance similar to that of a damper is generated, and this resistance offsets the impact force when the buffer spring 306 is reset, so that the buffer spring 306 pulls the sleeve 305 to reset more smoothly.

[0024] Figure-1 Figure 4 As shown, an inner liner pipe 4 is fixedly installed at the bottom of the sleeve 305 , and the outer diameter of the inner liner pipe 4 is smaller than the inner diameter of the liner pipe body 2 .

[0025] The liner body 2 is used to support and protect the inner liner 4 .

[0026] Furthermore, a partition 5 is longitudinally arranged inside the inner liner tube 4, and the partition 5 is arranged in an annular structure as a whole.

[0027] The partition 5 reduces the water hammer effect when the water flow starts and stops.

[0028] Furthermore, a thread groove 6 is formed on the outer wall of the right end of the liner body 2 , and the liner body 2 is threadedly connected with a thread sleeve 7 through the thread groove 6 .

[0029] The threaded sleeve 7 is later docked and adjusted with the liner body 2 and the second flange 8.

[0030] Furthermore, a second flange 8 is fixedly mounted on the right end of the threaded sleeve 7 , and a mounting hole 9 is formed on the outer wall of the second flange 8 .

[0031] Furthermore, a cavity (10) is provided inside the second flange (8), and the inner diameter of the cavity (10) is in close contact with the outer diameter of the liner body (2).

[0032] Furthermore, a sealing gasket 11 is fixedly installed on the right side of the second flange 8, and the sealing gasket 11 is arranged in a "ladder" shape as a whole.

[0033] The sealing gasket 11 is inserted into the inner liner pipe 4 in an annular shape to reduce water leakage after installation.

[0034] Working principle: When using the corrosion-resistant polytetrafluoroethylene lined pipe, first

[0035] Real-time example 1: When the partition 5 arranged inside the inner lining tube 4 is pushed by the "water hammer" effect, the inner lining tube 4 pulls or pushes the sleeve 305 fixed on the outer wall to move, and while the sleeve 305 moves, the gap between the buffer spring 306 and the slider 304 increases, and the sleeve 305 is pulled back to its original position by the elastic force of the buffer spring 306 for buffering. When the sleeve 305 and the slider 304 move and rub, a resistance similar to that of a damper is generated, and this resistance offsets the impact force when the buffer spring 306 is reset, so that the buffer spring 306 pulls the sleeve 305 to reset more smoothly.

[0036] Real-time example 2: The second flange 8 is quickly separated from the liner body 2 provided with a threaded groove 6 through the threaded sleeve 7, so that the inner liner tube 4 inside the liner body 2 is exposed, and through subsequent expansion or cutting, the inner liner tube 4 is made to better meet the use requirements, thereby achieving the purpose of adjusting the length of the inner liner tube 4. This is the working principle of the corrosion-resistant polytetrafluoroethylene inner liner tube 4.

Claims

1. A corrosion-resistant polytetrafluoroethylene lined pipe, comprising a first flange (1) and a buffer assembly (3), characterized in that: A liner body (2) is fixedly mounted on the left end of the first flange (1); a buffer assembly (3) for reducing the force of the water hammer effect is mounted on the inner wall of the liner body (2); the buffer assembly (3) comprises a fixing ring (301), a limit block (302), a slide rod (303), a slider (304), a sleeve (305) and a buffer spring (306); a limit block (302) is fixedly mounted inside the fixing ring (301), and a slide rod (303) is vertically arranged on the right side of the limit block (302); a slider (304) is fixedly mounted on the end of the slide rod (303), and a sleeve (305) is sleeved on the outer wall of the slider (304); a buffer spring (306) is fixedly mounted inside the sleeve (305), and the left end of the buffer spring (306) is fixed to the slider (304).

2. The corrosion-resistant polytetrafluoroethylene lined pipe according to claim 1, characterized in that: An inner liner tube (4) is fixedly mounted on the bottom of the sleeve (305), and the outer diameter of the inner liner tube (4) is smaller than the inner diameter of the liner tube body (2).

3. The corrosion-resistant polytetrafluoroethylene lined pipe according to claim 1, characterized in that: A partition (5) is longitudinally arranged inside the inner liner tube (4), and the partition (5) is arranged in an annular structure as a whole.

4. The corrosion-resistant polytetrafluoroethylene lined pipe according to claim 1, characterized in that: A thread groove (6) is provided on the outer wall of the right end of the liner body (2), and the liner body (2) is threadedly connected to a thread sleeve (7) via the thread groove (6).

5. The corrosion-resistant polytetrafluoroethylene lined pipe according to claim 4, characterized in that: A second flange (8) is fixedly mounted on the right end of the threaded sleeve (7), and a mounting hole (9) is provided on the outer wall of the second flange (8).

6. The corrosion-resistant polytetrafluoroethylene lined pipe according to claim 5, characterized in that: A cavity (10) is provided inside the second flange (8), and the inner diameter of the cavity (10) is in close contact with the outer diameter of the liner body (2).

7. The corrosion-resistant polytetrafluoroethylene lined pipe according to claim 5, characterized in that: A sealing gasket (11) is fixedly mounted on the right side of the second flange (8), and the sealing gasket (11) is arranged in a "ladder"-shaped structure as a whole.

Images