Anti-aging thermoplastic connecting piece for hose connection

Abstract

The utility model discloses an anti-aging thermoplastic connecting piece for hose connection, belongs to the field of hose connection, and aims to solve the problems of fluid medium leakage, resource waste and potential safety hazards caused by improper torque control when a hose connecting piece is mounted. By arranging the movable screwing pipe, the movable sleeve and the self-locking piece, tight connection between the hose and the connecting piece is achieved. Rotation of the movable screwing pipe can drive the locking rod to tightly extrude the surface of the hose, and pushing of the movable sleeve pipe further clamps the hose through the protruding ring. Through the design of threaded connection between the movable screwing pipe and the main body pipe, the connecting piece is more convenient and quicker to mount and dismount, the working efficiency is improved, the maintenance cost is reduced, a dual-clamping structure ensures that the hose is firmly fixed between the connecting pieces, leakage of a fluid medium is effectively prevented, and the service life of the hose is prolonged. And the reliability and the safety of the connection are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hose connection, more particularly to a hose connection aging-resistant thermoplastic connecting piece. BACKGROUND

[0002] The connecting piece for hose connection is a component specially used for connecting hoses, which plays a crucial role in the transmission system of fluid media such as liquids and gases. From the functional point of view, the main role of the connecting piece for hose connection is to ensure the tight connection between hoses, thereby preventing fluid leakage. It can firmly connect two or more hoses together to form a complete fluid transmission channel. From the material point of view, the connecting piece for hose connection is usually made of high-quality materials to ensure that it has sufficient strength and durability during use. These materials may include metal, plastic, rubber, etc., and the specific selection depends on the application environment, fluid medium, and performance requirements. In order to reduce the risk of leakage and failure caused by the aging of the connecting piece, and to adapt to the long-term stable connection state in harsh environments, the existing technology of hose connection changes from ordinary connecting pieces to aging-resistant thermoplastic connecting pieces. The aging-resistant thermoplastic connecting piece can effectively resist thermal expansion and contraction caused by changes in environmental temperature, ensuring the stability and safety of hose connection, and is widely used in various pipeline control systems, such as the lifting and transportation of raw water and sewage, water supply and circulating water in thermal power plants, etc.

[0003] However, when installing the hose connecting piece, a specific torque value needs to be used to ensure that it is tightened in place. If the torque control is not proper, either too small or too large torque will result in insufficient tightening. Because too small torque will result in the connecting piece not being pressed tightly enough, causing gaps; while too large torque may cause damage to the connecting piece or sealing parts, also causing gaps at the connection site, which may cause fluid medium to leak during transmission. For example, in the automobile fuel system, if the fuel hose connecting piece is not tightened in place, it may cause fuel leakage, which not only wastes fuel, but also may cause fire accidents and other safety incidents. SUMMARY

[0004] The utility model aims at providing an aging-resistant thermoplastic connecting piece for hose connection to solve the problem of insufficient tightening caused by improper torque control when installing the hose connecting piece, which may cause fluid medium leakage, resource waste and safety hazards, and is convenient to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the technical scheme as follows:

[0006] The utility model discloses a kind of ageing-resistant thermoplastic connecting pieces for hose connection, including main body pipe and the connecting middle end of installation in main body pipe middle end, the inside of main body pipe is equipped with butt joint inner tube, main body pipe and the outside of butt joint inner tube is equipped with movable screw pipe, the inner thread of movable screw pipe is connected with the outer surface thread of main body pipe, movable screw pipe is provided with two, two movable screw pipe is respectively with the two sides of connecting middle end End interface, one end of movable screw pipe is movably provided with movable sleeve, the inner diameter of movable sleeve is matched with the inner diameter of movable screw pipe, movable sleeve is sleeved in the outside end surface of butt joint inner tube, the both sides surface of main body pipe is provided with self-locking piece.

[0007] Preferably, the two inner walls of the movable screw pipe are provided with a reserved groove one, which is matched with the self-locking piece.

[0008] Preferably, the self-locking piece comprises a reserved groove two provided on the two side walls of the main body pipe and a lock rod installed in the reserved groove two, which is matched with the reserved groove one.

[0009] Preferably, there is a containing gap between the movable screw pipe and the butt joint inner tube for accommodating the end of the hose, and the size of the gap is greater than the thickness of the hose.

[0010] Preferably, the corner end of the lock rod is provided with an arc surface one, and the two corner sides of the threaded outer surface are provided with an arc surface two, which correspond to each other.

[0011] Preferably, one end of the lock rod is movably connected with the innermost bottom end of the reserved groove two, and the length of the lock rod is greater than the depth of the reserved groove two.

[0012] Preferably, the inner surface of the movable sleeve is provided with a convex ring, and the ring thickness gradually decreases from thick to thin, and the minimum inner diameter of the convex ring is smaller than the inner diameter of the movable screw pipe.

[0013] Compared with the prior art, the technical scheme has the following beneficial effects:

[0014] 1. The ageing-resistant thermoplastic connecting piece for hose connection realizes the tight connection between the hose and the connecting piece by setting the movable screw pipe, the movable sleeve and the self-locking piece. The rotation of the movable screw pipe can drive the lock rod to tightly extrude the surface of the hose, and the pushing of the movable sleeve can further lock the hose by the convex ring. This double locking structure ensures that the hose is firmly fixed between the connecting pieces, effectively prevents the leakage of fluid medium, and improves the reliability and safety of the connection.

[0015] 2, the utility model discloses a kind of hose connection with anti-aging thermoplastic connecting piece, connecting piece is made of anti-aging thermoplastic material, with good weather resistance and anti-aging performance, can adapt to various severe environmental conditions under the use demand.Simultaneously, the thread connection design between movable screw pipe and main body pipe, so that connecting piece is more convenient and fast in installation and dismounting process, improve work efficiency, reduce maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram of the utility model;

[0017] Figure 2 It is the structure schematic diagram of the tightening state of movable screw pipe of the utility model;

[0018] Figure 3 It is the structure schematic diagram of the butt joint inner tube of the utility model;

[0019] Figure 4 It is the internal schematic diagram of the utility model as a whole.

[0020] In the drawing: 1, main body pipe;2, connecting middle end;3, movable screw pipe;31, reserved groove one;32, threaded outer surface;4, movable sleeve;41, convex ring;5, butt joint inner tube;6, self-locking piece;61, reserved groove two;62, lock rod. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely in conjunction with the drawings of the embodiments of the utility model, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0022] To further understand the contents of the utility model, the utility model is described in detail in conjunction with the drawings.

[0023] In conjunction with Figure 1The utility model discloses a kind of ageing-resistant thermoplastic connecting pieces for hose connection, including main pipe 1 and the connecting middle end 2 of installation in the end of main pipe 1, the inside of main pipe 1 is equipped with butt inner tube 5, butt inner tube 5 and main pipe 1 are integrated structure, the outside of main pipe 1 and butt inner tube 5 is equipped with movable screw pipe 3, the inner thread of movable screw pipe 3 is connected with the outer surface of main pipe 1, movable screw pipe 3 is provided with two, two movable screw pipe 3 respectively with the two sides of connecting middle end 2 End interface, one end of movable screw pipe 3 movably is equipped with movable sleeve 4, the inner diameter of movable sleeve 4 is matched with the inner diameter of movable screw pipe 3, movable sleeve 4 is sleeved in the outside end surface of butt inner tube 5, the two side surfaces of main pipe 1 are provided with self-locking piece 6, main pipe 1, connecting middle end 2, movable screw pipe 3, movable sleeve 4 and butt inner tube 5 are made of ageing-resistant thermoplastic material, main pipe 1 made of ageing-resistant thermoplastic material has excellent weather resistance and chemical corrosion resistance, ageing-resistant thermoplastic material has good adhesion and sealing, can ensure the close connection between connecting middle end 2 and main pipe 1 and other components, prevent leakage, movable screw pipe 3 is made of ageing-resistant thermoplastic material, its inner thread is connected with the outer surface of main pipe 1 closely and easy to operate, convenient to install and disassemble, movable sleeve 4 is sleeved in the outside end surface of butt inner tube 5, made of ageing-resistant thermoplastic material, can ensure the close cooperation between it and butt inner tube 5, provide good sealing effect, butt inner tube 5 and main pipe 1 are integrated structure, made of ageing-resistant thermoplastic material, can enhance the strength and stability of whole connecting piece.

[0024] The utility model will be further described in connection with examples.

[0025] In combination Figures 2-4 Two inner side walls of movable screw pipe 3 are each provided with a reserved groove one 31, which is matched with self-locking piece 6, and the outer surface of movable screw pipe 3 is provided with a threaded outer surface 32. Self-locking piece 6 includes a reserved groove two 61 provided in the two side walls of main pipe 1 and a lock rod 62 installed inside the reserved groove two 61, which is matched with the reserved groove one 31. There is a containing gap between movable screw pipe 3 and butt inner tube 5 for containing the end of the hose, and the size of the gap is greater than the thickness of the hose. The corner end of lock rod 62 is provided with an arc surface one, and the two corners of threaded outer surface 32 are provided with an arc surface two, which correspond to each other. One end of lock rod 62 is movably connected with the innermost bottom end of reserved groove two 61, and the length of lock rod 62 is greater than the depth of reserved groove two 61. The inner side surface of movable sleeve 4 is installed with a convex ring 41, the ring thickness of which gradually decreases, and the minimum inner diameter of convex ring 41 is smaller than the inner diameter of movable screw pipe 3.

[0026] In this embodiment, first, the movable sleeve 4 is sleeved outside the hose end, and the hose end is sent into the area between the movable pipe 3 and the butt-in inner pipe 5, and the hose end is sent inside the two locking rods 62, then the movable pipe 3 is rotated by hand holding the threaded outer surface 32, one end of the movable pipe 3 gradually approaches the connecting middle end 2, when the movable pipe 3 is rotated, the arc surface between the reserved groove two 61 and the reserved groove one 31 is used, the reserved groove two 61 is away from the inside of the reserved groove one 31, and the locking rod 62 tightly extrudes the hose surface, so that the hose is firmly clamped between the movable pipe 3 and the butt-in inner pipe 5, at this time, the butt-in inner pipe 5 still has a distance from the movable pipe 3, finally, the movable sleeve 4 is pushed until it is opposite to one end of the movable pipe 3, the hose surface is extruded by the convex ring 41 again, so that the hose is clamped by the two segment locking assemblies, the hose is firmly clamped between the connecting pieces, the tight and leakage-free connection is realized, and the reliability and safety of the connection are improved.

Claims

1. An age-resistant thermoplastic coupling for flexible pipe connections comprising a main pipe and a coupling mid-portion mounted in the end of the main pipe, characterised in that: The inner side of the main pipe is provided with a butt joint inner pipe, the outer sides of the main pipe and the butt joint inner pipe are provided with movable screw pipes, the inner threads of the movable screw pipes are in threaded connection with the outer surface of the main pipe, the movable screw pipes are provided with two, the two movable screw pipes are respectively in butt joint with the two side ends of the connecting middle end, one end of the movable screw pipe is movably provided with a movable sleeve pipe, the inner diameter of the movable sleeve pipe is matched with the inner diameter of the movable screw pipe, the movable sleeve pipe is sleeved with the outer side end surface of the butt joint inner pipe, the two side surfaces of the main pipe are provided with self-locking pieces.

2. An age-resistant thermoplastic fitting for flexible pipe connections as defined in claim 1, characterized in that: The two inner side walls of the movable screw pipe are provided with reserved grooves one, the reserved grooves one are matched with the self-locking pieces, and the outer surface of the movable screw pipe is provided with a threaded outer surface.

3. A weatherable thermoplastic fitting for flexible pipe connections according to claim 2, characterized in that: The self-locking piece comprises reserved grooves two provided in the two side walls of the main pipe and lock rods installed in the reserved grooves two, and the lock rods are matched with the reserved grooves one.

4. An age resistant thermoplastic fitting for flexible pipe connections as defined in claim 1, wherein: The movable screw pipe and the butt joint inner pipe are provided with an accommodating gap therebetween for accommodating the end of the hose, and the size of the gap is greater than the thickness of the hose.

5. A weatherable thermoplastic fitting for flexible pipe connections as defined in claim 3, wherein: The corner ends of the lock rods are provided with arc surfaces one, the two side corners of the threaded outer surface are provided with arc surfaces two, and the arc surfaces one and the arc surfaces two are corresponding.

6. An age resistant thermoplastic fitting for flexible pipe connections as defined in claim 3, wherein: One end of the lock rod is movably connected with the innermost bottom end of the reserved groove two, and the length of the lock rod is greater than the depth of the reserved groove two.

7. An age resistant thermoplastic fitting for flexible pipe connections as defined in claim 1, wherein: The inner side surface of the movable sleeve pipe is provided with a convex ring, the ring thickness of the convex ring gradually decreases from thick to thin, and the minimum inner diameter of the convex ring is smaller than the inner diameter of the movable screw pipe.

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