PO (Polyolefin) rotational molding steel lined PTFE (Polytetrafluoroethylene) pipeline

Abstract

The utility model discloses a PO (polyolefin) rotational moulding steel lining polytetrafluoroethylene pipeline, which relates to the field of steel lining polytetrafluoroethylene pipelines and comprises a pipe body, a fixed flange plate is mounted at one end of the pipe body, a sliding flange plate is slidably arranged on the other side of the pipe body, and a plurality of groups of guide columns are arranged on one side of the sliding flange plate. A corresponding inserting hole is formed in the fixed flange plate, a first inserting rod is arranged in the inserting hole through an elastic assembly, and a sealing ring is connected to the other end of the first inserting rod. The sealing ring is limited under the action of the bolt assembly, so that the installation and connection work of two groups of pipe bodies is completed, the first insertion rod drives the sealing ring to move towards the inner side of the pipeline in the insertion process of the guide column, the sealing ring is attached to the outer wall of one end of the pipe body, the sealing ring can be prevented from being damaged during connection in the process, and the service life of the pipe body is prolonged. The service life of the whole sealing ring is prolonged, and the replacement frequency of the sealing ring by subsequent workers is reduced.

Description

Technical Field

[0001] The utility model relates to the field of steel-lined tetrafluoro pipes, in particular to a PO rolling steel-lined tetrafluoro pipe. Background Technique

[0002] The tetrafluoro-lined pipe is a kind of steel-polytetrafluoroethylene composite pipe, which can resist strong acids and alkalis. After years of actual use of the polytetrafluoroethylene-lined anti-corrosion pipe, the factors directly affecting its service life and performance stability are temperature, pressure, medium, etc. High-quality materials and advanced manufacturing process methods are the quality guarantee of polytetrafluoroethylene-lined products. The steel-lined tetrafluoro straight pipe is commonly known as the loose-lined pipe.

[0003] When the existing steel-lined tetrafluoro pipes are connected, it is necessary to wrap a sealing ring at the connection of the two pipes. Since the two groups of steel-lined tetrafluoro pipes are mostly connected by threads, and then limited by the flange, during the threaded connection of the steel-lined tetrafluoro pipes, the threads will cause wear to the sealing ring on the inner wall, thus affecting its overall sealing effect, and subsequent maintenance and replacement by staff are required many times, increasing the work burden of the staff.

[0004] To sum up, during the threaded connection of the steel-lined tetrafluoro pipes, the threads will cause wear to the sealing ring on the inner wall, thus affecting its overall sealing effect, and subsequent maintenance and replacement by staff are required many times, increasing the work burden of the staff. Content of the Utility Model

[0005] Based on this, the purpose of the present utility model is to provide a PO rolling steel-lined tetrafluoro pipe to solve the technical problems that the threads will cause wear to the sealing ring on the inner wall during the threaded connection, thus affecting its overall sealing effect, and subsequent maintenance and replacement by staff are required many times, increasing the work burden of the staff.

[0006] To achieve the above object, the present utility model provides the following technical solution: a PO rolling steel-lined tetrafluoro pipe, including a pipe body, one end of the pipe body is provided with a fixed flange, and a sliding flange is slidably arranged on the other side thereof. A plurality of guide posts are arranged on one side of the sliding flange, and corresponding insertion holes are opened on the fixed flange. A first insertion rod is arranged in the insertion hole through an elastic component, and a sealing ring is connected to the other end of the first insertion rod.

[0007] By adopting the above technical solution, the sliding flange moves to one side. The guide post is inserted into the jack, and is limited by the bolt assembly, thereby completing the installation and connection of the two sets of pipe bodies. During the insertion of the guide post, the first plug rod in the jack is extruded, so that the first plug rod drives the sealing ring to move towards the inner side of the pipe, realizing the attachment of the sealing ring to the outer wall of one end of the pipe body. In this process, the damage of the sealing ring during connection can be prevented, the overall service life of the sealing ring is prolonged, and the subsequent replacement frequency by the staff is reduced.

[0008] The present utility model is further configured such that the contact surface between the first plug rod and the guide post is arc-shaped, and the contact surface between the two is smooth.

[0009] By adopting the above technical solution, during the sliding of the guide post into the jack, the arc-shaped end surface will contact the top of the first plug rod first. At this time, the setting of the two arc-shaped end surfaces can prevent the guide post from getting stuck during sliding, further improving the stability of the cooperation between the guide post and the first plug rod. And the smooth setting between the two reduces the sliding friction between them, ensuring that the guide post can stably pass through the jack.

[0010] The present utility model is further configured such that the elastic component includes a compression spring and a slider. The outer wall of the first plug rod is symmetrically connected with sliders, and a compression spring is arranged at the bottom of the sliders. The other end of the compression spring is connected to the pipe body.

[0011] By adopting the above technical solution, when the first plug rod slides downward under the action of the guide post, it will drive the sliders on both sides to move downward accordingly. During this process, the sliders will pressurize the compression spring at the bottom end, making the compression spring itself in a compressed state. Subsequently, during the replacement of the sealing ring, when the guide post releases the limit on the first plug rod, under the action of the self-resetting of the compression spring, the plug rod is driven to slide upward for reset, thereby facilitating the disassembly of the pipeline by the staff.

[0012] The present utility model is further configured such that the outer wall of the guide post is thread-shaped.

[0013] By adopting the above technical solution, it is convenient to limit and fix the guide post after it passes through the jack under the action of the bolt assembly.

[0014] The present utility model is further configured such that the sealing ring and the first plug rod are detachably arranged.

[0015] By adopting the above technical solution, after long-term use, it is convenient for the staff to replace the sealing ring itself, ensuring the sealing performance between the pipe bodies.

[0016] The present utility model is further configured such that a chute is provided on the outer wall of the pipe body at the sliding flange, and a rough surface is provided on the outer wall of the chute.

[0017] By adopting the above technical solution, the chute facilitates the sliding of the sliding flange on the outer wall of the pipe body, and the setting of the rough surface increases the sliding friction between the chute and the sliding flange, effectively preventing the sliding flange from shifting in position when it is slightly impacted.

[0018] The present utility model is further configured such that the inner diameter of the pipe body at the fixed flange is larger than the outer diameter of the pipe body at the sliding flange.

[0019] By adopting the above technical solution, it is convenient for the staff to splice two groups of pipe bodies subsequently, ensuring the high efficiency of the connection between the two.

[0020] The present utility model is further configured such that a damping structure is provided at the connection between the first plug rod and the pipe body.

[0021] By adopting the above technical solution, the setting of the damping mechanism increases the friction between the first plug rod and the pipe body, preventing the first plug rod from sliding easily inside the pipe body.

[0022] In summary, the present utility model mainly has the following beneficial effects:

[0023] The present utility model is provided with a fixed flange and a sliding flange at both ends of the pipe body respectively, and the pipe bodies are connected by means of threaded connection. Subsequently, the sliding flange moves to one side, the guide post is inserted into the jack, and it is limited under the action of the bolt assembly, thereby completing the installation and connection work of two groups of pipe bodies. And during the insertion of the guide post, the first plug rod in the jack will be extruded, causing the first plug rod to drive the sealing ring to move towards the inner side of the pipeline, realizing the sealing ring to be attached to the outer wall of one end of the pipe body. In this process, the damage of the sealing ring during connection can be prevented, the overall service life of the sealing ring is prolonged, and the replacement frequency for subsequent staff is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the front perspective view of the present utility model;

[0025] Figure 2 is the rear perspective view of the present utility model;

[0026] Figure 3 is the present utility model Figure 2 the enlarged view of A in;

[0027] Figure 4 is the sectional view of the present utility model;

[0028] Figure 5For the present utility model Figure 4 An enlarged view of B in the figure.

[0029] In the figure: 1, pipe body; 2, fixed flange; 3, sliding flange; 4, chute; 5, jack; 6, first plug rod; 7, guide post; 8, sealing ring; 9, elastic component. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0031] Next, the embodiments of the present utility model will be described according to its overall structure.

[0032] Embodiment 1

[0033] A PO rolling steel-lined PTFE pipe, as Figures 1-5 shown, includes a pipe body 1, a fixed flange 2, a sliding flange 3, a sealing mechanism, a sliding mechanism and a threaded connection mechanism. A fixed flange 2 is installed at one end of the pipe body 1, and a sliding flange 3 is slidably arranged on the other side thereof. And the inner diameter of the pipe body 1 at the fixed flange 2 is larger than the outer diameter of the sliding flange 3, which is convenient for the staff to splice two pipe bodies 1 later to ensure the high efficiency of the connection between the two. Subsequently, slide the sliding flange 3 on the outer wall of the pipe body 1. On one side of the sliding flange 3, a plurality of guide posts 7 are provided, and corresponding jacks 5 are opened on the fixed flange 2. The sliding flange 3 moves to one side and the guide posts 7 are inserted into the jacks 5, and it is limited by the bolt assembly, thereby completing the installation and connection work of the two pipe bodies 1. And a first plug rod 6 is arranged in the jack 5 through an elastic component 9, and a sealing ring 8 is connected to the other end of the first plug rod 6. During the insertion of the guide post 7, the first plug rod 6 in the jack 5 will be squeezed, so that the first plug rod 6 drives the sealing ring 8 to move towards the inner side of the pipe, realizing that the sealing ring 8 is attached to the outer wall of one end of the pipe body 1. In this process, the damage of the sealing ring 8 during connection can be prevented, the overall service life of the sealing ring 8 is extended, and the replacement frequency of the staff is reduced later.

[0034] Please refer to Figure 4, wherein the elastic component 9 includes a compression spring and a slider. Sliders are symmetrically connected to the outer wall of the first plug rod 6, and a compression spring is arranged at the bottom of the slider. The other end of the compression spring is connected to the pipe body 1. When the first plug rod 6 slides downward under the action of the guide post 7, the sliders on both sides will be driven to move downward. During this process, the sliders will pressurize the compression spring at the bottom end, causing the compression spring to be in a compressed state. Subsequently, during the process of replacing the sealing ring 8, when the guide post 7 releases the limit on the first plug rod 6, the first plug rod 6 is driven to slide upward and reset under the action of the self-resetting of the compression spring, thereby facilitating the staff to disassemble the pipe body 1.

[0035] Please refer to Figure 1 and Figure 2 , a chute 4 is arranged on the outer wall of the pipe body 1 at the sliding flange 3, and a rough surface is arranged on the outer wall of the chute 4. The function of the chute 4 is to facilitate the sliding of the sliding flange 3 on the outer wall of the pipe body 1, and the setting of the rough surface increases the sliding friction between the chute 4 and the sliding flange 3, effectively preventing the sliding flange 3 from shifting in position when it is slightly impacted.

[0036] Embodiment 2

[0037] As Figure 5 shown, a PO rolling steel-lined PTFE pipe has an overall structure similar to that of Embodiment 1. The contact surface between the first plug rod 6 and the guide post 7 is arc-shaped and is smooth. During the process of the guide post 7 sliding into the jack 5, the arc-shaped end surface will contact the top end of the first plug rod 6 first. At this time, the setting of the two arc-shaped end surfaces can prevent the guide post 7 from getting stuck during the sliding process, further improving the stability of the cooperation between the guide post 7 and the first plug rod 6. And the smooth setting between the two reduces the sliding friction between them, ensuring that the guide post 7 can stably pass through the jack 5.

[0038] The working principle of the present utility model is as follows: When in use, one end of the pipe body 1 is inserted into another pipe body 1, and then the pipe body 1 is rotated to make them thread-connected. And the sliding flange 3 moves to one side, so that the guide post 7 is inserted into the jack 5 of the fixed flange 2. At this time, the fixed flange 2 and the sliding flange 3 are limited and connected under the action of the bolt assembly. And when the guide post 7 is inserted into the inside of the jack 5, it will squeeze the first plug rod 6 in the jack 5 downward. At this time, the first plug rod 6 will drive the sealing ring to move towards the inner side of the pipe body 1, realizing the attachment of the sealing ring 8 to the outer wall of one end of the pipe body 1. During this process, the damage of the sealing ring 8 during connection can be prevented, and the overall service life of the sealing ring 8 is prolonged.

[0039] Although embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and not limitations thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not contribute creatively to the embodiments as needed, but as long as they are within the scope of the claims of the present utility model, they are protected by the patent law.

Claims

1. A PO rotomolded steel-lined polytetrafluoroethylene pipe, comprising a pipe body (1), characterized in that: A fixed flange (2) is installed at one end of the tube body (1), and a sliding flange (3) is slidably arranged at the other side thereof, an array of guide pillars (7) is arranged on one side of the sliding flange (3), and a corresponding insertion hole (5) is opened on the fixed flange (2), a first insertion rod (6) is arranged in the insertion hole (5) via an elastic component (9), and a sealing ring (8) is connected to the other end of the first insertion rod (6).

2. A PO rotomolded steel-lined polytetrafluoroethylene pipe according to claim 1, characterized in that: The contact surface between the first insertion rod (6) and the guide column (7) is arranged in an arc shape, and the contact surface between the two is arranged in a smooth shape.

3. The PO rotomolded steel-lined polytetrafluoroethylene pipe according to claim 1, characterized in that: The elastic component (9) comprises a compression spring and a slider, the outer wall of the first insertion rod (6) is symmetrically connected to the slider, and a compression spring is arranged at the bottom of the slider, and the other end of the compression spring is connected to the tube body (1).

4. The PO rotomolded steel-lined polytetrafluoroethylene pipe according to claim 1, characterized in that: The outer wall of the guide column (7) is arranged in a threaded shape.

5. The PO rotomolded steel-lined polytetrafluoroethylene pipe according to claim 1, characterized in that: The sealing ring (8) and the first insertion rod (6) are detachably arranged.

6. The PO rotomolded steel-lined polytetrafluoroethylene pipe according to claim 1, characterized in that: The outer wall of the tube body (1) is provided with a slide groove (4) at the sliding flange (3), and the outer wall at the slide groove (4) is provided with a rough surface.

7. The PO rotomolded steel-lined polytetrafluoroethylene pipe according to claim 1, characterized in that: The inner diameter of the tube body (1) at the fixed flange (2) is greater than the outer diameter at the sliding flange (3).

8. The PO rotomolded steel-lined polytetrafluoroethylene pipe according to claim 1, characterized in that: A damping structure is provided at the connection between the first insertion rod (6) and the tube body (1).

Images