Cold-resistant PVC (polyvinyl chloride) pipe

Abstract

The utility model discloses a cold-resistant PVC (polyvinyl chloride) pipe, which comprises a cold-resistant pipe, a first arc heat-insulating part and a second arc heat-insulating part are symmetrically sleeved outside the cold-resistant pipe, and the side of the first arc heat-insulating part is positioned between the second arc heat-insulating part and the cold-resistant pipe. A locking assembly is arranged on the side between the first arc heat preservation piece and the second arc heat preservation piece, the side of the first arc heat preservation piece and the side of the second arc heat preservation piece are fixedly connected with the corresponding fixing pieces, the connecting frames are slidably connected to the ends of the outer walls of the corresponding fixing pieces in a sleeving mode, and the locking rods are slidably arranged in the connecting frames. And the outer wall of the locking rod is slidably clamped with the fixing piece. The cold-resistant pipe, the first arc heat preservation piece, the second arc heat preservation piece and the locking assembly are used in a matched mode, the first arc heat preservation piece and the second arc heat preservation piece can be stably installed outside the cold-resistant pipe under the action of the locking assembly, and the cold resistance of the cold-resistant pipe is improved again.

Description

Technical Field

[0001] The utility model relates to the field of pipe materials, in particular to a cold-resistant PVC pipe. Background Technique

[0002] Cold-resistant PVC pipes are a special type of pipe material designed for transporting fluids or gases in low-temperature environments. They are a variant of polyvinyl chloride. Cold-resistant PVC pipes have good cold-resistant performance under low-temperature conditions through improved formulations and special processes, making them suitable for extremely cold regions or situations where low-temperature media need to be handled. The following are some characteristics and advantages of cold-resistant PVC pipes. The surface of cold-resistant PVC pipes is smooth, not prone to scaling, has good wear resistance, and can operate stably for a long time.

[0003] In some extremely cold regions, when installing and using cold-resistant PVC pipes, a thermal insulation sleeve is also wrapped around the outside of the cold-resistant PVC pipes to further improve the cold-resistant performance of the cold-resistant PVC pipes and reduce the probability of external oxidation damage to the cold-resistant PVC pipes. However, when installing the thermal insulation sleeve, it is usually fastened and bound with cable ties. Since the cable ties are relatively thin, using cable ties to bind the thermal insulation sleeve will cause indentation marks on the outside of the thermal insulation sleeve. After a long time, water accumulation, ice formation, and corrosion will occur at the indentation marks, and it is not convenient to disassemble, inspect, and maintain using cable ties. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cold-resistant PVC pipe to solve the problems mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A cold-resistant PVC pipe, including a cold-resistant pipe;

[0006] The outside of the cold-resistant pipe is symmetrically sleeved with a first arc-shaped thermal insulation member and a second arc-shaped thermal insulation member. The side of the first arc-shaped thermal insulation member is located between the second arc-shaped thermal insulation member and the cold-resistant pipe. A locking component is arranged on the side between the first arc-shaped thermal insulation member and the second arc-shaped thermal insulation member. The locking component includes:

[0007] A fixing member, the sides of the first arc-shaped thermal insulation member and the second arc-shaped thermal insulation member are fixedly connected to the corresponding fixing members;

[0008] A connecting frame, the connecting frame is slidably sleeved on the end of the outer wall of the corresponding fixing member;

[0009] A locking rod, the locking rod is slidably arranged inside the connecting frame, and the outer wall of the locking rod is slidably clamped with the fixing member.

[0010] Preferably, a slot matching the locking rod is provided at the end of the fixing member, a clamping groove is provided at the top of the inner wall of the slot, and the outer wall of the locking rod is slidably clamped with the inner cavity of the clamping groove.

[0011] Preferably, a sliding hole is provided on the side of the connecting frame, the end of the outer wall of the locking rod is slidably sleeved with the sliding hole, a connecting plate is fixedly connected to the end of the locking rod, and the connecting plate is located on the side of the connecting frame.

[0012] Preferably, a fixing rod is connected to the inner cavity of the sliding hole, the outer wall of the fixing rod is slidably inserted and sleeved with the locking rod, and a limiting spring acting on the locking rod is slidably sleeved on the outer wall of the fixing rod.

[0013] Preferably, arc plates are fixedly embedded in the interiors of the first arc-shaped heat preservation member and the second arc-shaped heat preservation member, and the ends of the arc plates are fixedly connected to the fixing member.

[0014] Preferably, the interiors of the first arc-shaped heat preservation member and the second arc-shaped heat preservation member each include a heat preservation cotton board, a waterproof layer and a wear-resistant layer. The heat preservation cotton board is connected between the waterproof layer and the wear-resistant layer. The arc plate is connected between the heat preservation cotton board and the wear-resistant layer. The end of the arc plate is inserted and connected to the wear-resistant layer. The inner side of the waterproof layer is attached to the cold-resistant pipe.

[0015] The technical effects and advantages of the present utility model:

[0016] By using the cooperation of the cold-resistant pipe, the first arc-shaped heat preservation member, the second arc-shaped heat preservation member and the locking assembly, the first arc-shaped heat preservation member and the second arc-shaped heat preservation member can be stably installed on the outside of the cold-resistant pipe under the action of the locking assembly, further improving the cold resistance performance of the cold-resistant pipe. And the locking assembly is composed of a fixing member, a connecting frame, a locking rod, a limiting spring and an arc plate, so as to facilitate the installation and protection of the first arc-shaped heat preservation member and the second arc-shaped heat preservation member. Moreover, the arc plate can improve the compressive performance of the cold-resistant pipe, the first arc-shaped heat preservation member and the second arc-shaped heat preservation member. Brief Description of the Drawings

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

[0018] Figure 2 It is a schematic diagram of the overall structure of the fixing member of the present utility model.

[0019] Figure 3 It is a schematic diagram of the internal structure of the front side of the connecting frame of the present utility model.

[0020] In the figure: 1, cold-resistant pipe; 2, first arc heat-insulating member; 3, second arc heat-insulating member; 4, locking assembly; 41, fixing member; 42, connecting frame; 43, locking rod; 44, slot; 45, clamping groove; 46, connecting plate; 47, sliding hole; 48, fixing rod; 49, limiting spring; 410, arc plate. Detailed implementation mode

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] The present invention provides a Figures 1-3 shown cold-resistant PVC pipe, including a cold-resistant pipe 1. When the cold-resistant pipe 1 is produced, a cold-resistant material is added to its injection molding granule raw material to improve the cold resistance of the cold-resistant pipe 1. The first arc heat-insulating member 2 and the second arc heat-insulating member 3 are symmetrically sleeved outside the cold-resistant pipe 1. The first arc heat-insulating member 2 and the second arc heat-insulating member 3 can further improve the cold resistance of the cold-resistant pipe 1. The side of the first arc heat-insulating member 2 is located between the second arc heat-insulating member 3 and the cold-resistant pipe 1, so that the first arc heat-insulating member 2 and the second arc heat-insulating member 3 can be seamlessly sleeved outside the cold-resistant pipe 1. A locking assembly 4 is arranged on the side between the first arc heat-insulating member 2 and the second arc heat-insulating member 3. The locking assembly 4 includes a fixing member 41, a connecting frame 42 and a locking rod 43. The sides of the first arc heat-insulating member 2 and the second arc heat-insulating member 3 are fixedly connected to the corresponding fixing members 41, that is, both sides of the first arc heat-insulating member 2 and both sides of the second arc heat-insulating member 3 are fixedly connected with fixing members 41. The connecting frame 42 is slidably sleeved on the end of the outer wall of the corresponding fixing member 41. The end of the fixing member 41 has a bent straight part. The connecting frame 42 is sleeved with the fixing member 41 on the side of the first arc heat-insulating member 2 and the fixing member 41 on the side of the second arc heat-insulating member 3, so as to restrain the first arc heat-insulating member 2 and the second arc heat-insulating member 3. The locking rod 43 is slidably arranged inside the connecting frame 42. The outer wall of the locking rod 43 is slidably clamped with the fixing member 41. A slot 44 matching the locking rod 43 is opened at the end of the fixing member 41. A clamping groove 45 is opened at the top of the inner wall of the slot 44. The outer wall of the locking rod 43 is slidably clamped with the inner cavity of the clamping groove 45. When the locking rod 43 is clamped in the clamping groove 45, the stability of the connection between the connecting frame 42 and the two fixing members 41 can be ensured. And by pulling the locking rod 43 to slide inside the connecting frame 42 so that the locking rod 43 slides to the slot 44, the connecting frame 42 can be directly pulled to be separated from the fixing member 41.

[0023] Specifically, sliding holes 47 are formed in the side edges of the connecting frame 42. The end of the outer wall of the locking rod 43 is slidably sleeved with the sliding holes 47. A connecting plate 46 is fixedly connected to the end of the locking rod 43. The connecting plate 46 is located on the side edge of the connecting frame 42, and the connecting plate 46 can partition and seal the sliding holes 47. A fixing rod 48 is connected to the inner cavity of the sliding holes 47. The outer wall of the fixing rod 48 is slidably inserted through the locking rod 43. Under the action of the fixing rod 48, the locking rod 43 can stably slide along the track of the sliding holes 47. A limiting spring 49 acting on the locking rod 43 is slidably sleeved on the outer wall of the fixing rod 48. The limiting spring 49 can give an elastic extrusion force to the locking rod 43, so that the locking rod 43 is stably clamped in the clamping groove 45.

[0024] Furthermore, arc plates 410 are fixedly embedded in the interiors of both the first arc heat preservation member 2 and the second arc heat preservation member 3. The ends of the arc plates 410 are fixedly connected to the fixing members 41, that is, both ends of the arc plates 410 are fixedly connected to the fixing members 41. The arc plates 410 can not only improve the stability of the fixed connection between the fixing members 41 and the first arc heat preservation member 2 or the second arc heat preservation member 3, but also improve the compressive resistance of the exteriors of the first arc heat preservation member 2 and the second arc heat preservation member 3, thereby improving the compressive resistance of the cold-resistant pipe 1.

[0025] Even further, the interiors of both the first arc heat preservation member 2 and the second arc heat preservation member 3 include heat preservation cotton boards, waterproof layers, and wear-resistant layers. The heat preservation cotton boards are connected between the waterproof layers and the wear-resistant layers. The heat preservation cotton boards are wrapped around the outside of the cold-resistant pipe 1, which can improve the cold resistance of the cold-resistant pipe 1. The arc plates 410 are connected between the heat preservation cotton boards and the wear-resistant layers. The ends of the arc plates 410 are inserted and connected to the wear-resistant layers. The inner side of the waterproof layer is attached to the cold-resistant pipe 1, that is, the waterproof layer is on the inner side and the wear-resistant layer is on the outer side. The wear-resistant layer can improve the wear resistance of the heat preservation cotton board, and the waterproof layer and the wear-resistant layer are arranged to wrap the heat preservation cotton board. The waterproof layer can prevent the water droplets condensed on the outside of the cold-resistant pipe 1 from entering the interior of the heat preservation cotton board, thereby causing the heat preservation cotton board to become damp and reducing its heat preservation performance.

[0026] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A cold-resistant PVC pipe, comprising a cold-resistant pipe (1); It is characterized in that The cold-resistant pipe (1) is symmetrically sleeved with a first circular arc heat-insulating component (2) and a second circular arc heat-insulating component (3), the side of the first circular arc heat-insulating component (2) is located between the second circular arc heat-insulating component (3) and the cold-resistant pipe (1), and a locking component (4) is arranged on the side between the first circular arc heat-insulating component (2) and the second circular arc heat-insulating component (3), and the locking component (4) comprises: A fixing member (41), wherein the side of the first circular arc heat-insulating member (2) and the side of the second circular arc heat-insulating member (3) are fixedly connected to the corresponding fixing member (41); A connecting frame (42), wherein the connecting frame (42) is slidably sleeved on an end portion of an outer wall of a corresponding fixing member (41); A locking rod (43) is slidably disposed inside the connecting frame (42), and an outer wall of the locking rod (43) is slidably engaged with the fixing member (41).

2. A cold-resistant PVC pipe according to claim 1, characterized in that: The end of the fixing member (41) is provided with a slot (44) matching the locking rod (43), the top of the inner wall of the slot (44) is provided with a clamping groove (45), and the outer wall of the locking rod (43) is slidably clamped with the inner cavity of the clamping groove (45).

3. A cold-resistant PVC pipe according to claim 1, characterized in that: A sliding hole (47) is provided on the side of the connecting frame (42), and the end of the outer wall of the locking rod (43) is slidably sleeved with the sliding hole (47). The end of the locking rod (43) is fixedly connected with a connecting plate (46), and the connecting plate (46) is located on the side of the connecting frame (42).

4. A cold-resistant PVC pipe according to claim 3, characterized in that: The inner cavity of the sliding hole (47) is connected to a fixing rod (48), the outer wall of the fixing rod (48) is slidably inserted and sleeved with the locking rod (43), and the outer wall of the fixing rod (48) is slidably sleeved with a limit spring (49) acting on the locking rod (43).

5. The cold-resistant PVC pipe according to claim 1, characterized in that: An arc plate (410) is fixedly embedded in the interior of the first arc heat-insulating component (2) and the interior of the second arc heat-insulating component (3), and the end of the arc plate (410) is fixedly connected to the fixing component (41).

6. A cold-resistant PVC pipe according to claim 5, characterized in that: The interior of the first arc insulation component (2) and the second arc insulation component (3) both include an insulation cotton board, a waterproof layer and a wear-resistant layer. The insulation cotton board is connected between the waterproof layer and the wear-resistant layer. The arc plate (410) is connected between the insulation cotton board and the wear-resistant layer. The end of the arc plate (410) is interlaced and connected with the wear-resistant layer. The inner side of the waterproof layer is in contact with the cold-resistant pipe.

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