High-pressure metal hose

Abstract

The utility model discloses a high-pressure metal hose, which belongs to the technical field of metal hoses and comprises a corrugated pipe body, connecting rings are fixedly connected to two ends of a net sleeve, flange plates are mounted outside the two connecting rings, positioning mechanisms are slidably connected into two cylinders, and the positioning mechanisms are fixedly connected to the two ends of the net sleeve. A plurality of second rods are fixedly connected to one side of the positioning mechanism, and an unlocking mechanism rotationally connected with one ends of the second rods is slidably connected to the outer portion of the cylinder. The flange plates are detachably connected with the corrugated pipe body, so that quick disassembly and modular maintenance are realized, and the problem of integral scrapping caused by a traditional welding structure is avoided; through end face sealing formed by the pressing ring and the sealing ring, the leakage risk under the high-pressure working condition is effectively prevented, and meanwhile through the independent sealing ring design, regular replacement is facilitated so as to prolong the overall service life; automatic centering and locking during flange plate installation are achieved through the positioning mechanism, the assembly process is simplified, and reliable connection under the vibration working condition is ensured.

Description

Technical Field

[0001] This utility model relates to the field of metal hose technology, and in particular to high-pressure metal hoses. Background Technology

[0002] High-pressure metal hoses are flexible pipes that are resistant to high pressure, corrosion, and high temperature, consisting of corrugated pipes, braided sleeves, and joints. They are used in high-pressure fluid transmission systems to compensate for installation errors and absorb vibration.

[0003] In existing applications of high-pressure metal hoses, the flange joints and hose bodies are typically fixed by non-removable welding. While this structure can meet the sealing requirements under normal operating conditions, it reveals certain technical defects in actual use. When the flange fails due to mechanical wear, media corrosion, or stress concentration during installation, resulting in deformation of the sealing surface or damage to the threads, the welded structure makes the joint and hose body a rigid connection, making it impossible to repair and reuse through partial replacement. This all-or-nothing technical solution directly leads to resource waste on two levels: First, even with partial damage to the flange, the entire still usable metal hose must be scrapped, resulting in redundant material loss. Second, maintenance work requires simultaneous replacement of both the flange and the hose body, significantly increasing spare parts inventory costs and equipment downtime for maintenance.

[0004] Therefore, there is an urgent need to provide high-pressure metal hoses to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a high-pressure metal hose.

[0006] To solve the above-mentioned technical problems, the present invention provides a high-pressure metal hose, including a corrugated pipe body, a stainless steel braided mesh sleeve is fitted on the outside of the corrugated pipe body, a connecting ring is fixedly connected to both ends of the mesh sleeve, a flange is installed on the outside of the two connecting rings, a cylinder is fixedly connected to the inward side of the two flanges and contacts the connecting ring, a positioning mechanism is slidably connected inside the two cylinders, and multiple grooves corresponding to the positioning mechanism are opened on the outside of the two connecting rings.

[0007] The positioning mechanism has multiple rods fixedly connected to one side, and the cylinder has an unlocking mechanism slidably connected to one end of the rods. The cylinder has multiple bolts rotatably connected to the connecting ring.

[0008] The present invention is further configured such that: a pressure ring is fixedly connected to one side of each of the two flanges, and a sealing ring is fixedly connected to both ends of the mesh sleeve, with the two pressure rings respectively contacting and abutting against the two sealing rings.

[0009] Through the above technical solution, the contact fit between the pressure ring and the sealing ring forms an end face seal through mechanical extrusion; when the flange is installed in place, the pressure ring continuously compresses the sealing ring to produce elastic deformation, filling the assembly gap between the end of the mesh sleeve and the flange; this structure can enhance the sealing pressure under the action of medium pressure, effectively preventing the risk of leakage under high pressure conditions, while the sealing ring, as an independent component, is easy to replace regularly, extending the overall service life of the hose.

[0010] The present invention is further configured such that: the positioning mechanism includes a plurality of sleeves respectively fixedly connected to the outside of the two cylinders, the plurality of sleeves are arranged in a circular array with the two cylinders as the center, and a fixed block with an inclined end is slidably connected inside the plurality of sleeves. One end of the plurality of fixed blocks passes through the cylinder and is located in the plurality of grooves, and the other end of the plurality of fixed blocks is fixedly connected to the plurality of rods.

[0011] Through the above technical solution, the positioning mechanism adopts a fixed block with a sloping guide to achieve automatic centering and locking; during installation, the sloping surface of the fixed block contacts the end of the connecting ring to generate a radial force, which drives the fixed block to compress the spring and retract. When the second slot reaches the positioning, the spring releases its stored energy and pushes the fixed block to lock in; this passive locking mechanism simplifies the assembly process and ensures that the flange remains reliably connected under vibration conditions. The sloping design has both installation guidance and anti-loosening functions.

[0012] The present invention is further configured such that: springs are sleeved on the outside of each of the plurality of rods 2, and the two ends of the springs are respectively fixedly connected to the other end of the fixing block and the inside of the sleeve.

[0013] Through the above technical solution, the spring maintains the locked state of the fixed block through preload, and continuously provides holding force under high pressure pulsation or vibration conditions to prevent the fixed block from accidentally coming off; when disassembly is required, the spring's stored energy can assist the fixed block to retract quickly and avoid jamming; as a passive actuator, this elastic element can achieve self-holding function without external power, improving system reliability and reducing operational complexity.

[0014] The present invention is further configured such that: the unlocking mechanism includes two rings that are slidably connected to the outside of the two cylinders respectively; one side of each of the two rings is rotatably connected to a plurality of rods; the other end of each of the plurality of rods is rotatably connected to one end of a plurality of rods; and a groove is provided in each of the plurality of sleeves, with the plurality of rods located in the plurality of grooves.

[0015] Through the above technical solution, the unlocking mechanism drives the third rod to move through the axial displacement of the ring, converting linear motion into radial contraction of the fixed block; when the operator pushes the ring, the third rod drives the second rod to generate lever motion under the guidance of the T-slot, pulling the fixed block away from the slot; this mechanical linkage design enables quick unlocking with one hand, the synchronous action of multiple fixed blocks ensures unlocking reliability, and the T-slot constraint prevents movement deviation.

[0016] The present invention is further configured such that: multiple T-shaped blocks are fixedly connected to the outside of both cylinders, and multiple T-shaped grooves corresponding to the T-shaped blocks are opened in the inside of both annulus.

[0017] Through the above technical solution, the T-block and T-slot cooperate to constrain the movement trajectory of the ring through surface contact; when the operator applies force, the T-block restricts the ring from sliding under the guidance of the inner wall of the T-slot, ensuring that the unlocking action is executed accurately; this guide structure eliminates the rotation operation of traditional thread unlocking, simplifies the operation steps, and prevents the mechanism from jamming due to misoperation.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. This utility model achieves rapid disassembly and modular maintenance through the detachable connection between the flange and the bellows body, avoiding the overall scrapping problem caused by traditional welded structures, significantly reducing maintenance costs and improving component utilization; the end face seal formed by the pressure ring and the sealing ring effectively prevents the risk of leakage under high pressure conditions, while the independent sealing ring design facilitates regular replacement to extend the overall service life; the positioning mechanism realizes automatic centering and locking during flange installation, simplifying the assembly process and ensuring reliable connection under vibration conditions.

[0020] 2. This utility model maintains the locked state of the fixing block through spring preload, continuously providing holding force to prevent accidental dislodgement under high-pressure pulsating conditions, and assisting in rapid retraction during disassembly to avoid jamming; the unlocking mechanism enables quick one-handed unlocking operation, and the synchronous action of multiple sets of fixing blocks ensures unlocking reliability; the T-slot guide design eliminates the risk of movement deviation; the linear guide formed by the T-block and T-slot restricts the movement trajectory of the ring, simplifying the operation steps while preventing the mechanism from jamming due to misoperation. Finally, through the synergistic effect of the above mechanisms, reliable connection, quick disassembly and assembly, and partial replacement functions of the flange and hose body are achieved while ensuring high-pressure sealing performance. Attached Figure Description

[0021] Figure 1 This is a first-view structural diagram of the present invention;

[0022] Figure 2 This is a second-view sectional view of the present invention;

[0023] Figure 3This is a third-view sectional view of the present invention;

[0024] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 5 This is a fourth-angle sectional view of the present invention;

[0026] Figure 6 for Figure 5 A magnified view of a section at point B.

[0027] In the diagram: 1. Corrugated pipe body; 2. Mesh sleeve; 3. Connecting ring; 4. Flange; 5. Cylinder; 6. Positioning mechanism; 601. Sleeve; 602. Fixing block; 603. Spring; 7. Groove 2; 8. Rod 2; 9. Unlocking mechanism; 901. Ring; 902. Rod 3; 903. Groove 3; 904. T-block; 905. T-groove; 10. Bolt; 11. Pressure ring; 12. Sealing ring. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0029] Please see Figures 1-6 The high-pressure metal hose of this embodiment includes a corrugated pipe body 1. A stainless steel braided mesh sleeve 2 is fitted over the corrugated pipe body 1. Connecting rings 3 are fixedly connected to both ends of the mesh sleeve 2. Flanges 4 are installed on the outside of each connecting ring 3. A cylinder 5, in contact with the connecting ring 3, is fixedly connected to the inward side of each flange 4. A positioning mechanism 6 is slidably connected inside each cylinder 5. Multiple slots 7 corresponding to the positioning mechanism 6 are formed on the outside of each connecting ring 3. The positioning mechanism 6 includes multiple sleeves 601 fixedly connected to the outside of each of the two cylinders 5. The multiple sleeves 601 are arranged in a circular array around the two cylinders 5. A slidably connected [missing information] is [missing information] inside each of the multiple sleeves 601. The fixing blocks 602 with inclined ends have one end passing through the cylinder 5 and located in multiple slots 7 respectively. The other end of the fixing blocks 602 is fixedly connected to multiple rods 8 respectively. The positioning mechanism 6 uses the inclined guide fixing blocks 602 to achieve automatic centering and locking. During installation, the inclined surface of the fixing block 602 contacts the end of the connecting ring 3 to generate a radial force, which drives the fixing block 602 to compress the spring 603 and retract. When the slot 7 reaches the positioning, the spring 603 releases its stored energy and pushes the fixing block 602 to lock in. This passive locking mechanism simplifies the assembly process and ensures that the flange 4 maintains a reliable connection under vibration conditions. The inclined design has both installation guidance and anti-loosening functions.

[0030] like Figures 5-6 As shown, multiple rods 8 are each fitted with a spring 603. The two ends of the spring 603 are fixedly connected to the other end of the fixing block 602 and the inside of the sleeve 601, respectively. The spring 603 maintains the locking state of the fixing block 602 through preload and continuously provides holding force under high pressure pulsation or vibration conditions to prevent the fixing block 602 from accidentally coming off. When disassembly is required, the energy stored in the spring 603 can assist the fixing block 602 to retract quickly and avoid jamming. As a passive actuator, this elastic element can achieve self-holding function without external power, improving system reliability and reducing operation complexity.

[0031] like Figures 5-6 As shown, a plurality of rods 8 are fixedly connected to one side of the positioning mechanism 6. An unlocking mechanism 9 is slidably connected to the outside of the cylinder 5 and rotatably connected to one end of the rods 8. A plurality of bolts 10 are rotatably connected inside the cylinder 5 and abut against the connecting ring 3. The unlocking mechanism 9 includes two rings 901 that are slidably connected to the outside of the two cylinders 5 respectively. A plurality of rods 902 are rotatably connected to one side of each of the two rings 901. The other ends of the plurality of rods 902 are rotatably connected to one end of the plurality of rods 8 respectively. A groove 903 is opened in each of the plurality of sleeves 601. Multiple rods 902 are located in multiple slots 903. The unlocking mechanism 9 drives the rods 902 to move through the axial displacement of the ring 901, converting linear motion into radial contraction of the fixed block 602. When the operator pushes the ring 901, the rods 902, guided by the T-slot 905, drive the rod 8 to move outward, pulling the fixed block 602 away from the slot 7. This mechanical linkage design enables quick unlocking with one hand, and the synchronous action of multiple fixed blocks 602 ensures unlocking reliability. The T-slot 905 constrains and prevents movement deviation.

[0032] like Figures 3-4 As shown, multiple T-blocks 904 are fixedly connected to the outside of both cylinders 5. Multiple T-slots 905 corresponding to the T-blocks 904 are opened inside both rings 901. The cooperation between the T-blocks 904 and the T-slots 905 constrains the movement trajectory of the rings 901 through surface contact. When the operator applies force, the T-blocks 904 restrict the sliding of the rings 901 under the guidance of the inner wall of the T-slots 905, ensuring that the unlocking action is accurately executed. This guide structure eliminates the rotation operation of traditional threaded unlocking, simplifies the operation steps, and prevents the mechanism from jamming due to misoperation.

[0033] like Figures 1-3As shown, pressure rings 11 are fixedly connected to one side of each of the two flanges 4, and sealing rings 12 are fixedly connected to both ends of the braided sleeve 2. The two pressure rings 11 contact and abut against the two sealing rings 12 respectively. The contact fit between the pressure rings 11 and the sealing rings 12 forms an end face seal through mechanical compression. When the flanges 4 are installed in place, the pressure rings 11 continuously compress the sealing rings 12 to produce elastic deformation, filling the assembly gap between the end of the braided sleeve 2 and the flanges 4. This structure can enhance the sealing pressure under the action of medium pressure, effectively preventing the risk of leakage under high pressure conditions. At the same time, the sealing rings 12 are independent components that are easy to replace regularly, extending the overall service life of the hose.

[0034] In use, this utility model achieves a detachable sealing connection by engaging the connecting rings 3 at both ends of the mesh sleeve 2 outside the corrugated pipe body 1 with the flange 4. During installation, the inclined fixing block 602 inside the cylindrical tube 5 of the flange 4 automatically retracts under the pressure of the end of the connecting ring 3. After the groove 7 of the connecting ring 3 is in place, the spring 603 pushes the fixing block 602 into place, forming an axial lock, thus achieving temporary fixation. For long-term fixation, the bolt 10 inside the cylindrical tube 5 is rotated to press against the connecting ring 3 for permanent fixation. At the same time, the pressure ring 11 of the flange 4 compresses the sealing ring 12 at the end of the mesh sleeve 2, causing elastic deformation and forming an end face seal. When disassembly is required, the bolt 10 is rotated in the opposite direction to release the lock, pushing the ring 90 1. The third rod 902 is deflected outward, causing the second rod 8 to move outward. The traction fixing block 602 is disengaged from the second groove 7 to unlock. The cooperation between the T-block 904 and the T-groove 905 ensures precise guidance of the unlocking action. The entire process achieves reliable connection and quick disassembly of the flange 4 and the hose body through mechanical self-locking and elastic retention. This ensures sealing performance under high pressure conditions and extends the service life of components through partial replacement. At the same time, the bellows body 1 itself is flexible, and the various components are tightly connected to ensure tight liquid delivery. The connecting rings 3 at both ends of the mesh sleeve 2 make the flange 4 easy to install, saving time and effort. It is durable, reusable, and reduces production costs.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-pressure metal hose, comprising a corrugated pipe body (1), wherein a stainless steel braided mesh sleeve (2) is fitted over the corrugated pipe body (1), characterized in that: Both ends of the mesh sleeve (2) are fixedly connected to connecting rings (3), and flanges (4) are installed on the outside of the two connecting rings (3). A cylinder (5) that contacts the connecting ring (3) is fixedly connected to the inside of the two flanges (4). A positioning mechanism (6) is slidably connected inside the two cylinders (5). Multiple slots (7) corresponding to the positioning mechanism (6) are opened on the outside of the two connecting rings (3). The positioning mechanism (6) is fixedly connected to one side of multiple rods (8), the cylinder (5) is slidably connected to an unlocking mechanism (9) that is rotatably connected to one end of the rods (8), and the cylinder (5) is rotatably connected to multiple bolts (10) that abut against the connecting ring (3).

2. The high-pressure metal hose according to claim 1, characterized in that: One side of each of the two flanges (4) is fixedly connected with a pressure ring (11), and both ends of the mesh sleeve (2) are fixedly connected with a sealing ring (12). The two pressure rings (11) respectively contact and abut against the two sealing rings (12).

3. The high-pressure metal hose according to claim 1, characterized in that: The positioning mechanism (6) includes multiple sleeves (601) that are fixedly connected to the outside of the two cylinders (5). The multiple sleeves (601) are arranged in a circular array with the two cylinders (5) as the center. Each of the multiple sleeves (601) has a fixed block (602) with an inclined end that is slidably connected inside. One end of the multiple fixed blocks (602) passes through the cylinder (5) and is located in multiple slots (7). The other end of the multiple fixed blocks (602) is fixedly connected to multiple rods (8).

4. The high-pressure metal hose according to claim 3, characterized in that: A spring (603) is fitted on the outside of each of the multiple rods (8), and the two ends of the spring (603) are fixedly connected to the other end of the fixing block (602) and the inside of the sleeve (601), respectively.

5. The high-pressure metal hose according to claim 3, characterized in that: The unlocking mechanism (9) includes two rings (901) that are slidably connected to the outside of the two cylinders (5). Each of the two rings (901) is rotatably connected to one side of a plurality of rods (902). The other end of each of the rods (902) is rotatably connected to one end of a plurality of rods (8). Each of the sleeves (601) has a groove (903) inside it. The rods (902) are located in the grooves (903).

6. The high-pressure metal hose according to claim 5, characterized in that: Multiple T-blocks (904) are fixedly connected to the outside of the two cylinders (5), and multiple T-slots (905) corresponding to the T-blocks (904) are opened in the two rings (901).

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