A new black water pipe

Abstract

The utility model relates to the technical field of black water pipe, especially a novel black water pipe, including hose joint, metal bellows, PVC hose, sealing compression circle, the PVC hose is set on the hose joint, the PVC hose with sealing compression circle pressure joint equipment cooperation sealing compression circle pressure tight fixed, the metal bellows surrounds setting in the PVC hose outer ring, the hose joint end protruding sets up the hose cold welding position, the structure between the metal bellows and the hose cold welding position cold welding fixed, has realized the double -layer sealing of black water pipe pipeline, the leakproofness is more reliable, and further solved the effect that black water pipe pipeline is easy to fall off and is easy to receive the pipeline deformation problem caused by external pressure.

Description

Technical Field

[0001] This utility model relates to the technical field of black water pipes, and in particular to a novel black water pipe. Background Technology

[0002] In the existing technology, sewage pipes used in trains and cruise ships generally adopt a structure in which PVC hose 4 and pagoda connector are connected by only a single-layer hose clamp. This structure has significant defects: since it relies on only a single-layer hose clamp for sealing and fixing, it is prone to sealing failure and liquid leakage under alternating positive and negative pressure conditions; at the same time, the locking force provided by the hose clamp is limited, so there is a risk of detachment at the connection between PVC hose 4 and connector; in addition, PVC hose 4 lacks an external pressure-resistant support structure, and is prone to deformation or even breakage when subjected to external mechanical forces, which seriously affects the reliability of the sewage system. Utility Model Content

[0003] The purpose of this utility model is to provide a new type of black water pipe that addresses the shortcomings of existing technologies. It achieves double-layer sealing of the black water pipe, making the sealing more reliable, and further solves the problems of black water pipes being prone to detachment and deformation due to external pressure.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a hose connector, a metal corrugated pipe, a PVC hose, and a sealing ring; the PVC hose is sleeved on the hose connector, and the PVC hose and the hose connector are pressed and fixed together by a sealing ring crimping device; the metal corrugated pipe is arranged around the outer ring of the PVC hose; the end of the hose connector has a protruding hose cold welding position, and the metal corrugated pipe is fixed to the hose cold welding position by cold welding.

[0005] Furthermore, it also includes a corrugated pipe sheath, which fastens and connects the metal corrugated pipe and the hose cold-welded position.

[0006] Furthermore, the corrugated sleeve covers the cold-welded connection between the metal corrugated pipe and the hose.

[0007] Furthermore, the hose cold welding position is provided with a sheath mounting groove, which cooperates with the corrugated pipe sheath to fasten and fix it.

[0008] Furthermore, the width of the bellows sheath is wider than that of the sealing ring.

[0009] Furthermore, an O-ring is provided inside the hose connector to assist in sealing.

[0010] Furthermore, the metal corrugated pipe is made of stainless steel, and a flexible pipeline is formed through the corrugated structure.

[0011] The system comprises a hose connector, a metal corrugated pipe, a PVC hose, and a sealing ring. The PVC hose is fitted onto the hose connector, and the PVC hose and the hose connector are pressed and fixed together by a sealing ring crimping device. The metal corrugated pipe is arranged around the outer ring of the PVC hose. The hose connector has a protruding cold-welding position at its end, and the metal corrugated pipe is fixed to the hose by cold welding. This structure achieves a double-layer seal for the black water pipe, making the sealing more reliable and further solving the problems of black water pipes being prone to detachment and deformation due to external pressure. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the novel black water pipe of this utility model;

[0014] Figure 2 This is a schematic diagram of the cold welding position of the flexible hose in this utility model;

[0015] Figure 3 This is a schematic diagram of the PVC hose of this utility model.

[0016] Figure label:

[0017] 1. Hose connector, 1-1. Hose cold welding position, 1-2. Sheath installation groove, 2. Metal corrugated pipe, 3. Corrugated pipe sheath, 4. PVC hose, 5. O-ring, 6. Sealing pressure ring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be noted that the orientation or positional relationship indicated by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inner", and "outer" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] A new type of black water pipe, such as Figures 1-3 As shown, it includes a hose connector 1, a metal corrugated pipe 2, a PVC hose 4, and a sealing ring 6; the PVC hose 4 is sleeved on the hose connector 1, and the PVC hose 4 and the hose connector 1 are pressed and fixed together by a sealing ring crimping device in conjunction with the sealing ring 6; the metal corrugated pipe 2 is arranged around the outer ring of the PVC hose 4; the end of the hose connector 1 is provided with a hose cold welding position 1-1, and the metal corrugated pipe 2 is cold welded to the hose cold welding position 1-1.

[0021] Specifically, the PVC hose 4 and hose connector 1 are tightened and secured by the sealing ring 6, forming a reliable first layer of seal to effectively prevent liquid leakage. Then, a metal corrugated pipe 2 is wrapped around the outer ring of the PVC hose 4 and fixed to the hose cold-welded position 1-1 at the end of the hose connector 1 by cold welding, providing a second layer of seal and mechanical reinforcement, enhancing the overall structure's pressure resistance. This double-layer sealing design solves the problem of existing single-layer hose clamp seals easily falling off under positive and negative pressure, significantly improving the stability and durability of black water pipe connections while simplifying the installation process.

[0022] As a preferred embodiment of the above, such as Figures 1-3 As shown, it also includes a corrugated pipe sleeve 3, which fastens and connects the metal corrugated pipe 2 and the hose cold welding position 1-1.

[0023] Specifically, the corrugated sleeve 3 fastens and connects the metal corrugated pipe 2 to the hose connector 1 at the cold weld position 1-1, forming a third layer of protection. The corrugated sleeve 3 provides physical protection for the cold weld connection point between the cold weld position 1-1 and the metal corrugated pipe 2, preventing damage to the cold weld structure due to external impact or corrosion. Furthermore, axial locking further enhances the connection strength between the metal corrugated pipe 2 and the hose cold weld position 1-1, eliminating the potential loosening risk caused by long-term vibration. The corrugated sleeve 3, in conjunction with the aforementioned double-layer sealing structure, forms a multi-level protection system. This significantly improves the fatigue resistance of the overall structure under extreme positive and negative pressure conditions, ensuring stronger impact resistance, sealing durability, and service life at the connection between the PVC hose 4 and the hose connector 1, further eliminating the risk of detachment associated with traditional single-layer hose clamp structures.

[0024] As a preferred embodiment of the above, such as Figures 1-3 As shown, the corrugated pipe sleeve 3 covers the connection between the metal corrugated pipe 2 and the cold welding position 1-1 of the hose.

[0025] Specifically, the corrugated sleeve 3 completely covers the connection area between the metal corrugated pipe 2 and the hose connector 1 at the cold weld position 1-1, forming a dual barrier of sealing and protection. The covering structure prevents external contaminants from directly contacting the cold weld point, avoiding seal failure at the cold weld position 1-1 due to corrosion or physical damage. The corrugated sleeve 3 further disperses the mechanical stress at the connection, significantly reducing the risk of localized impact on the cold weld position 1-1 when the metal corrugated pipe 2 is bent or vibrated. This further improves the long-term sealing stability and structural integrity of the black water pipe under complex working conditions, solves the defect of easy loosening of traditional single-layer hose clamp seals, and significantly extends the service life of critical connection parts.

[0026] As a preferred embodiment of the above, such as Figures 1-3 As shown, the hose cold welding position 1-1 is provided with a sheath mounting groove 1-2, which is used to fasten and fix the corrugated pipe sheath 3.

[0027] Specifically, the sleeve installation groove 1-2 specially designed on the hose cold welding position 1-1 of the hose connector 1 forms a precise mechanical interlocking structure with the corrugated pipe sleeve 3, allowing the corrugated pipe sleeve 3 to be tightly fastened and axially locked, eliminating the risk of displacement of the sleeve due to vibration or external force. The introduction of the sleeve installation groove 1-2 further enhances the rigid covering effect of the corrugated pipe sleeve 3 on the connection between the metal corrugated pipe 2 and the hose cold welding position 1-1, ensuring that external impact force is dispersed and transmitted to the main body of the hose connector 1 through the groove structure, avoiding local stress on the cold welding point. The precise positioning characteristics of the sleeve installation groove 1-2 significantly improve the efficiency and consistency of the overall assembly, while forming a rigid connection of the multi-level protection structure, ultimately achieving sealing performance and anti-detachment guarantee at the black water pipe connection under extreme positive and negative pressure, mechanical vibration and complex environments.

[0028] As a preferred embodiment of the above, such as Figures 1-3 As shown, the width of the corrugated pipe sleeve 3 is wider than that of the sealing ring 6.

[0029] Specifically, by extending the width of the corrugated sleeve 3 to completely cover the outer edge of the sealing ring 6, redundant protection is formed for the first layer of sealing structure. This allows the sleeve to not only shield the connection between the metal corrugated pipe 2 and the hose cold-welded position 1-1, but also simultaneously cover the crimping area of ​​the sealing ring 6, completely isolating external contaminants from corroding the sealing ring 6 and the interface between the PVC hose 4 and the hose connector 1. The widened corrugated sleeve 3 tightly engages with the sleeve mounting groove 1-2 on the hose cold-welded position 1-1, forming a continuous protective cover bridging the metal corrugated pipe 2 and the sealing ring 6, significantly improving the overall structure's corrosion resistance and mechanical integrity.

[0030] As a preferred embodiment of the above, such as Figures 1-3 As shown, an O-ring 5 is also provided inside the hose connector 1 for auxiliary sealing.

[0031] Specifically, the O-ring 5 and the sealing pressure ring 6 together form the first layer of redundant seal, which significantly improves the reliability of the medium sealing at the connection between the PVC hose 4 and the hose connector 1.

[0032] As a preferred embodiment of the above, such as Figures 1-3 As shown, the metal corrugated pipe 2 is made of stainless steel and forms a flexible pipeline through its corrugated structure.

[0033] Specifically, the flexible characteristics of the corrugated metal pipe 2, combined with multiple protections, form a rigid-flexible synergistic mechanism: under high pressure impact, the stainless steel corrugated structure buffers the pressure peak through elastic deformation; under negative pressure conditions, its rigid skeleton prevents the pipeline from collapsing.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A novel black water pipe, characterized in that: Includes a hose connector (1), a metal bellows (2), a PVC hose (4), and a sealing ring (6); The PVC hose (4) is sleeved on the hose connector (1), and the PVC hose (4) and the hose connector (1) are pressed and fixed together by a sealing pressure ring crimping device in cooperation with the sealing pressure ring (6); The metal corrugated pipe (2) is arranged around the outer ring of the PVC hose (4); The end of the hose connector (1) is provided with a hose cold welding position (1-1), and the metal corrugated pipe (2) is fixed to the hose cold welding position (1-1) by cold welding.

2. The novel black water pipe according to claim 1, characterized in that, It also includes a corrugated pipe sleeve (3), which fastens and connects the metal corrugated pipe (2) and the hose cold welding position (1-1).

3. A novel black water pipe according to claim 2, characterized in that, The corrugated pipe sheath (3) covers the connection between the metal corrugated pipe (2) and the cold weld position (1-1) of the hose.

4. A novel black water pipe according to claim 2, characterized in that, The hose cold welding position (1-1) is provided with a sheath installation groove (1-2), which is used to fasten and fix the corrugated pipe sheath (3).

5. A novel black water pipe according to claim 2, characterized in that, The width of the corrugated pipe sleeve (3) is wider than that of the sealing ring (6).

6. A novel black water pipe according to claim 1, characterized in that, The hose connector (1) is also provided with an O-ring (5) for auxiliary sealing.

7. A novel black water pipe according to claim 1, characterized in that, The metal corrugated pipe (2) is made of stainless steel and forms a flexible pipeline through its corrugated structure.

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