Low-temperature-resistant rubber tube assembly

Abstract

The utility model relates to the technical field of rubber tube assemblies, in particular to a low-temperature-resistant rubber tube assembly which comprises a tube body, detachable and replaceable connectors are arranged at the two ends of the tube body, a heat preservation inner container is arranged on the inner wall of the tube body, a corrosion-resistant inner sleeve is further arranged on the inner wall of the heat preservation inner container, a first limiting ring is arranged at the right end of each connector, and a second limiting ring is arranged at the left end of each connector. A protruding ring is arranged at the position, corresponding to the annular groove, of the connector. The second limiting ring is further sleeved with a nut sleeve cap. According to the low-temperature-resistant rubber tube assembly, the heat preservation inner container and the tube body are combined, the influence of external environment low-temperature changes on internal infusion is reduced, the corrosion influence of infusion on the tube body is reduced under the cooperation of the corrosion-resistant inner sleeve, the two connectors are matched with the two ends of the tube body in an inserted mode, and the two connectors are connected through the first limiting ring and the protruding ring in a matched mode. The positions of the two ends of the pipe body and the connectors are fixed through the hoops, the second limiting rings at the outer ends of the connectors are sleeved with the nut sleeve caps, and threaded connection with an external pipeline is facilitated under the cooperation of the internal threads.

Description

Technical Field

[0001] The utility model relates to the technical field of hose assemblies, in particular to a low-temperature resistant hose assembly. Background Art

[0002] The hose assembly is a commonly used auxiliary device in hydraulic systems, with an operating temperature of -40°C to +100°C;

[0003] The utility model with announcement number CN219473031U discloses a low-temperature resistant and resistance-reducing crimping rubber hose assembly. The conical tube is inserted into the hose, and the hose is placed between the tube sleeve and the conical tube. The tube sleeve is crimped to connect the tube sleeve, the hose, and the conical tube together, with internal support and external pressure. An O-ring is placed on the step of the conical tube. When the tube sleeve is crimped, the O-ring is compressed to form a seal. A groove is provided in the tube sleeve. When crimping, the tube sleeve first contacts the hose and blocks the hose in the tube sleeve, achieving front blocking and rear cutting. The conical tube is provided with a melting groove, and the tube sleeve is provided with a corresponding groove, so that the teeth and rubber are embedded and seamlessly filled when crimping. When crimping, lubricating oil is used to apply to the hose, conical tube, and O-ring to form an oil film, thereby achieving oil sealing. The surface of the conical tube joint is designed to simplify the complexity, reduce the processing and manufacturing process of the crimping surface, reduce manufacturing costs, expand the inner hole of the conical tube, and reduce water resistance.

[0004] The above technical solution has a good sealing effect in a low-temperature environment and can operate at a temperature of -40°C to 88°C without medium leakage. When achieving low-temperature sealing, the inner diameter of the cone tube is expanded to the maximum extent, the water resistance is reduced, and the resistance reduction problem is achieved, thereby achieving resistance reduction of the entire system, optimizing the design, designing the cone tube and the pipe sleeve, reducing the manufacturing process, and reducing costs; however, the hose assembly is used in the outside world for a long time, and the low temperature can easily cause frostbite and cracking to the inner tube, and it cannot be used for low-temperature protection. At the same time, the two ends of the hose assembly are not convenient for stable combination with external pipelines to reduce the impact of leakage. Utility Model Content

[0005] The purpose of the present utility model is to provide a low-temperature resistant hose assembly to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A low-temperature resistant hose assembly comprises a tube body, both ends of which are provided with detachable and replaceable connecting heads, an insulating liner is provided on the inner wall of the tube body, the inner wall of the insulating liner is also provided with a corrosion-resistant inner sleeve, annular grooves are symmetrically provided at both ends of the inner wall of the tube body, a first limiting ring is provided at the right end of the connecting head, a second limiting ring is provided at the left end of the connecting head, a convex ring is provided at the connecting head corresponding to the annular groove, an insulating cotton sleeve is provided at the connecting head near the left end, rubber pads are provided on both sides of the second limiting ring, and a nut cap is also provided on the second limiting ring.

[0008] Furthermore, a limiting hole is provided at the bottom of the nut sleeve corresponding to the connector, the inner diameter of the limiting hole is adapted to the outer diameter of the thermal insulation cotton sleeve, and an internal thread is provided on the inner wall of the nut sleeve.

[0009] In the utility model, the cooperation of the limiting hole helps the nut cap to cooperate with the thermal insulation cotton sleeve and slide horizontally on the thermal insulation cotton sleeve. The cooperation of the internal thread facilitates the connection between the nut cap and the external thread at the end of the external pipe, making it convenient to combine and fix the connecting head with the external pipe.

[0010] It should be noted that the first limiting ring and the connecting head are an integrally formed structure, the second limiting ring and the connecting head are an integrally formed structure, the outer diameter of the second limiting ring is adapted to the inner diameter of the nut sleeve, and the rubber pads are bonded and fixed to the side wall of the second limiting ring.

[0011] In the utility model, the cooperation of the first limiting ring helps to fit with the tube body, increasing the stability of the combined connection between the connector and the tube body; the cooperation of the second limiting ring helps to install and fit the nut cap on the connector, and limits the moving position of the nut cap; with the cooperation of the two rubber pads, the outer rubber pad increases the sealing between the connector and the external connecting pipe, and the inner rubber pad increases the sealing between the nut cap and the connector, reducing the impact of slipping during installation on the internal seal and causing leakage.

[0012] Secondly, the convex rings are all welded and fixed to the connectors, the outer diameter of the convex rings is matched with the inner diameter of the annular grooves, and the convex rings are plug-fitted into the annular grooves.

[0013] In the present invention, the cooperation of the convex ring facilitates plug-in installation with the annular groove, thereby increasing the tightness of the combination of the pipe body and the connector, thereby increasing the stability of the installation.

[0014] Furthermore, the thermal insulation liner is bonded and fixed to the tube body, and the outer wall of the corrosion-resistant inner sleeve is bonded and fixed to the inner wall of the thermal insulation liner.

[0015] In the utility model, the installation of the heat-insulating inner liner increases the resistance of the infusion inside the tube body to the interference of the external environmental temperature change, reduces the influence of the external low temperature on the internal infusion, and with the cooperation of the corrosion-resistant inner sleeve, reduces the corrosion influence of the internal infusion on the tube body, thereby extending the overall service life.

[0016] Specifically, both ends of the outer wall of the tube body are provided with limiting rings, the limiting rings are bonded and fixed to the tube body, and clamps are further provided at both ends of the outer wall of the tube body near the limiting rings.

[0017] In the utility model, with the cooperation of the limiting ring, the limiting of the two ends of the pipe body is increased, and with the cooperation of the clamp, it helps to fix the position of the pipe body and increase the stability of the installation.

[0018] In addition, the bottom of the clamp fits tightly against the outer wall of the tube body, and the positions of the clamp and the two annular grooves correspond to each other.

[0019] In the present invention, the position of the clamp corresponds to the position between the two annular grooves, the clamp is tightened, and the convex ring is tightly plugged into the annular groove, thereby increasing the installation stability of the two ends of the pipe body and the connector.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The utility model reduces the impact of low temperature changes in the external environment on the internal infusion by arranging a heat-insulating inner liner and a tube body, and reduces the erosion of the tube body by the infusion in cooperation with the corrosion-resistant inner sleeve. The two connectors are plugged into and matched with the two ends of the tube body, and the positions of the two ends of the tube body and the connectors are fixed by clamps in cooperation with the first limiting ring and the convex ring, thereby increasing the stability of the installation. The second limiting ring at the outer end of the connector is sleeved with a nut cap, which, in cooperation with the internal thread, facilitates threaded connection with the external pipeline. The nut cap can be disassembled, which facilitates the overall disassembly and replacement.

[0022] The utility model arranges two convex rings to be plugged into the annular groove inside the pipe body, and the clamp corresponds to the position of the outer wall of the annular groove. The clamp is fixed and tightly clamped to the two ends of the pipe body. Rubber pads are matched on both sides of the second limiting ring. The outer rubber pad increases the sealing of the connection with the external pipeline, and the inner rubber pad increases the tightness of the installation of the nut cap and the connecting head, reducing the impact of slippage on installation and fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 This is a schematic diagram of the combined structure of the connector and the pipe body of the present invention;

[0025] Figure 3 This is a schematic diagram of the connector structure of the present invention;

[0026] Figure 4 This is a schematic diagram of the combined structure of the pipe body and the clamp of the present utility model;

[0027] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the present utility model.

[0028] The meaning of each number in the figure is:

[0029] 1. Tube body; 10. Limiting ring; 11. Annular groove; 12. Clamp; 13. Insulation liner; 14. Corrosion-resistant inner sleeve;

[0030] 2. Connector; 20. First limiting ring; 21. Second limiting ring; 210. Rubber pad; 22. Convex ring; 23. Insulation cotton cover;

[0031] 3. Nut cap; 30. Limit hole; 300. Internal thread. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 5 , this embodiment provides a technical solution:

[0034] A low-temperature resistant hose assembly includes a tube body 1. Both ends of the outer wall of the tube body 1 are provided with limiting rings 10, which are bonded and fixed to the tube body 1. Clamps 12 are also provided near the limiting rings 10 at both ends of the outer wall of the tube body 1.

[0035] In the present invention, the cooperation of the limiting ring 10 increases the limit of the two ends of the tube body 1, and the cooperation of the clamp 12 helps to fix the position of the tube body 1 and increase the stability of the installation.

[0036] Furthermore, the bottom of the clamp 12 is tightly fitted to the outer wall of the tube body 1 , and the positions of the clamp 12 and the two annular grooves 11 correspond to each other.

[0037] In the present invention, the position of the clamp 12 corresponds to the position between the two annular grooves 11 , the clamp 12 is tightened, and the convex ring 22 is tightly plugged into the annular groove 11 , thereby increasing the installation stability of the two ends of the pipe body 1 and the connector 2 .

[0038] Specifically, both ends of the tube body 1 are provided with detachable and replaceable connecting heads 2, an insulating liner 13 is provided on the inner wall of the tube body 1, and the inner wall of the insulating liner 13 is also provided with a corrosion-resistant inner sleeve 14, the insulating liner 13 is bonded and fixed to the tube body 1, and the outer wall of the corrosion-resistant inner sleeve 14 is bonded and fixed to the inner wall of the insulating liner 13.

[0039] In the present invention, the installation of the heat-insulating inner liner 13 increases the protection of the infusion inside the tube body 1 from the interference of the external environmental temperature change, reduces the impact of the external low temperature on the internal infusion, and with the cooperation of the corrosion-resistant inner sleeve 14, reduces the corrosion effect of the internal infusion on the tube body 1, thereby extending the overall service life.

[0040] It should be noted that annular grooves 11 are symmetrically provided at both ends of the inner wall of the tube body 1, a first limiting ring 20 is provided at the right end of the connector 2, and a second limiting ring 21 is provided at the left end of the connector 2. The first limiting ring 20 and the connector 2 are an integrally formed structure, and the second limiting ring 21 and the connector 2 are an integrally formed structure. The outer diameter of the second limiting ring 21 is adapted to the inner diameter of the nut sleeve 3, and the rubber pads 210 are bonded and fixed to the side walls of the second limiting ring 21.

[0041] In the present invention, the cooperation of the first limiting ring 20 helps to fit with the tube body 1, thereby increasing the stability of the combined connection between the connector 2 and the tube body 1. The cooperation of the second limiting ring 21 helps to install and fit the nut cap 3 on the connector 2, and limits the moving position of the nut cap 3. With the cooperation of the two rubber pads 210, the outer rubber pad 210 increases the sealing between the connector 2 and the external connecting pipe, and the inner rubber pad 210 increases the sealing between the nut cap 3 and the connector 2, reducing the impact of slippage during installation on the internal seal and causing leakage.

[0042] Furthermore, a convex ring 22 is provided on the connector 2 at a position corresponding to the annular groove 11 . The convex ring 22 is welded and fixed to the connector 2 . The outer diameter of the convex ring 22 matches the inner diameter of the annular groove 11 . The convex ring 22 is plugged into the annular groove 11 .

[0043] In the present invention, the cooperation of the convex ring 22 facilitates the plug-in installation with the annular groove 11 , thereby increasing the tightness of the combination of the pipe body 1 and the connector 2 , and further increasing the stability of the installation.

[0044] Specifically, a heat-insulating cotton sleeve 23 is provided on the connector 2 near the left end, rubber pads 210 are provided on both sides of the second limiting ring 21, and a nut cap 3 is also provided on the second limiting ring 21.

[0045] It is worth adding that a limiting hole 30 is provided at the bottom of the nut cap 3 corresponding to the connector 2 , the inner diameter of the limiting hole 30 is adapted to the outer diameter of the thermal insulation cotton sleeve 23 , and an internal thread 300 is provided on the inner wall of the nut cap 3 .

[0046] In the present utility model, the cooperation of the limiting hole 30 helps the nut cap 3 to fit with the thermal insulation cotton sleeve 23 and slide horizontally on the thermal insulation cotton sleeve 23. The cooperation of the internal thread 300 facilitates the threaded connection between the nut cap 3 and the external thread at the end of the external pipe, making it convenient to combine and fix the connecting head 2 with the external pipe.

[0047] When using the low-temperature resistant hose assembly of this embodiment, the user first sets the nut cap 3 with the limiting hole 30 on the connector 2 with the second limiting ring 21, wherein the inner rubber pad 210 is tightly fitted with the nut cap 3, and then the corrosion-resistant inner sleeve 14 is bonded and fixed to the thermal insulation liner 13, and the thermal insulation liner 13 is bonded and fixed to the inner wall of the tube body 1, and then the two ends of the tube body 1 are respectively plugged and matched with the connector 2 with the first limiting ring 20, and the convex ring 22 is plugged and matched with the annular groove 11, and finally the clamp 12 is set on the two ends of the tube body 1, and the clamp 12 fixes the end of the tube body 1, tightens the tube body 1 and the connector 2, and increases the stability of the installation;

[0048] When it is necessary to connect the entire assembly with an external pipeline, with the cooperation of the nut cap 3, the internal thread 300 is threadedly connected to the external thread on the external pipeline, and the rubber pad 210 on the outer side of the connector 2 fits tightly with the end of the external pipeline, increasing the tightness of the assembly and reducing the impact of leakage.

Claims

1. A low-temperature resistant hose assembly, comprising a tube body (1), both ends of the tube body (1) being provided with detachable and replaceable connectors (2), characterized in that: The inner wall of the tube body (1) is provided with an insulation liner (13), and the inner wall of the insulation liner (13) is also provided with a corrosion-resistant inner sleeve (14). Annular grooves (11) are symmetrically opened at both ends of the inner wall of the tube body (1). A first limiting ring (20) is provided at the right end of the connector (2), and a second limiting ring (21) is provided at the left end of the connector (2). A convex ring (22) is provided on the connector (2) at a position corresponding to the annular groove (11). A thermal insulation cotton sleeve (23) is provided on the connector (2) near the left end. Rubber pads (210) are provided on both sides of the second limiting ring (21), and a nut cap (3) is also provided on the second limiting ring (21).

2. The low-temperature resistant hose assembly according to claim 1, characterized in that: A limiting hole (30) is provided at the bottom of the nut sleeve cap (3) corresponding to the connector (2), the inner diameter of the limiting hole (30) is adapted to the outer diameter of the thermal insulation cotton sleeve (23), and an internal thread (300) is provided on the inner wall of the nut sleeve cap (3).

3. The low-temperature resistant hose assembly according to claim 2, characterized in that: The first limiting ring (20) and the connecting head (2) are an integrally formed structure, the second limiting ring (21) and the connecting head (2) are an integrally formed structure, the outer diameter of the second limiting ring (21) is adapted to the inner diameter of the nut sleeve (3), and the rubber pad (210) is bonded and fixed to the side wall of the second limiting ring (21).

4. The low-temperature resistant hose assembly according to claim 1, characterized in that: The convex rings (22) are welded and fixed to the connector (2); the outer diameter of the convex rings (22) matches the inner diameter of the annular groove (11); and the convex rings (22) and the annular groove (11) are plug-fitted.

5. The low-temperature resistant hose assembly according to claim 1, characterized in that: The heat-insulating inner liner (13) is bonded and fixed to the tube body (1), and the outer wall of the corrosion-resistant inner sleeve (14) is bonded and fixed to the inner wall of the heat-insulating inner liner (13).

6. The low-temperature resistant hose assembly according to claim 1, characterized in that: Both ends of the outer wall of the tube body (1) are provided with limiting rings (10), and the limiting rings (10) are bonded and fixed to the tube body (1). Clamps (12) are also provided near the limiting rings (10) at both ends of the outer wall of the tube body (1).

7. The low-temperature resistant hose assembly according to claim 6, characterized in that: The bottom of the clamp (12) is tightly fitted to the outer wall of the tube body (1), and the positions of the clamp (12) and the two annular grooves (11) correspond to each other.

Images