High-pressure fluid hose connector

Abstract

The invention belongs to the technical field of hose connectors, and particularly relates to a high-pressure fluid hose connector. Comprising a sleeve and a core rod, the core rod is coaxially arranged in the sleeve, one end of the sleeve is open, the other end of the sleeve is connected with the core rod, a plurality of sealing protruding rings are formed on the inner wall of the sleeve, the core rod is of a pagoda-shaped sealing line structure in appearance, and the end, connected with the sleeve, of the core rod is sleeved with a sealing ring gasket and a supporting ring plate. The sealing ring gasket is arranged on the side face, away from the connecting position of the sleeve and the core rod, of the supporting ring plate, a plurality of compression springs are evenly distributed on the inner end face, away from the open end of the sleeve, of the sleeve in the circumferential direction of the axis, and the other ends of the compression springs abut against the supporting ring plate. The sealing device has the advantages of being good in sealing performance and capable of preventing the hose from loosening.

Description

Technical Field

[0001] The present invention belongs to the technical field of hose connectors, and particularly relates to a high-pressure fluid hose connector. Background Art

[0002] In many industrial fields, such as petrochemical, hydraulic machinery, aerospace, etc., the transportation of high-pressure fluids is extremely common. As a key component connecting high-pressure hoses with equipment and pipelines, the performance of high-pressure hose connectors directly affects the safety and stability of the entire fluid transportation system. There are many problems with existing high-pressure hose connectors. Hose connectors usually adopt a swaging method, that is, the tail part of the core rod of the connector is generally designed with a pagoda-shaped sealing pattern. During swaging, the inner layer material of the hydraulic hose or nylon tube is extruded and deformed by a preset pressure, and is physically bonded to the core tail sealing pattern to form a seal, that is, a hose assembly. Due to the fatigue deformation of the inner tube of the hydraulic hose or nylon tube and some human factors in the swaging process, there is a risk of liquid or gas leakage from the tail of the sleeve during the use of the hose assembly, and it also greatly affects its service life. The utility model with the patent publication number CN214889481U in the prior art discloses a high-pressure hose connector, including: a tube core body, provided with a sealing structure and a tube core rod body, the sealing structure is arranged at one end of the tube core rod body, and the sealing structure protrudes from the peripheral wall of the tube core rod body to form a first step surface; a nut, sleeved on the tube core body and capable of rotating along its own axis, the inner wall of the nut is stepped to form a second step surface, the second step surface can abut against the first step surface, and the minimum inner diameter of the nut is greater than or equal to the maximum outer diameter of the tube core rod body; a sleeve support, detachably sleeved and fixed on the tube core rod body.

[0003] However, the above technology also has the following problems: on the one hand, the sealing performance is poor, and leakage is likely to occur in a high-pressure environment, which not only causes waste of resources but also may lead to safety accidents; on the other hand, the connection strength is insufficient. After frequently bearing high-pressure impacts, the connection between the connector and the hose is likely to become loose or even fall off, affecting the continuity of production operations.

[0004] Therefore, in view of the above technical problems, how to enhance the sealing performance of high-pressure hose connectors and prevent hose loosening is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-pressure fluid hose connector, which can enhance the sealing performance of the high-pressure hose connector and prevent hose loosening, and has advantages such as good sealing performance and strong fastening ability.

[0006] The technical solution of the present invention is as follows: A high-pressure fluid hose connector, comprising a sleeve and a core rod, the core rod being coaxially arranged in the sleeve, one end of the sleeve being open, and the other end being connected to the core rod, a plurality of sealing protrusion rings being formed on the inner wall of the sleeve, the core rod having a pagoda-shaped sealing pattern structure, an end portion of the core rod connected to the sleeve being sleeved with a sealing ring gasket and a supporting ring plate, the sealing ring gasket being arranged on the side of the supporting ring plate away from the connection between the sleeve and the core rod, a plurality of compression springs being evenly distributed along the circumferential direction of the axis on the inner end surface of the sleeve away from the sleeve opening, and the other end of the compression spring being in contact with the supporting ring plate.

[0007] A sealing groove is formed between two adjacent sealing protrusion rings, a pair of arc-shaped clamps are arranged in one of the sealing grooves, threaded holes are opened on the side wall of the sleeve at the position corresponding to each arc-shaped clamp, a tightening sealing bolt is threadedly connected in the threaded hole, the nut of the tightening sealing bolt is located outside the sleeve, and the other end of the tightening sealing bolt is connected to the outer side surface of the arc-shaped clamp.

[0008] The arc-shaped clamp is a semicircular clamp.

[0009] The inner diameter of the sealing ring gasket is clearance matched with the outer diameter of the end of the core rod, and the outer diameter of the sealing ring gasket is clearance matched with the inner diameter of the tail end of the sleeve.

[0010] A rotation limiting sleeve is arranged in the middle of the outer side surface of the arc-shaped clamp, a rotation ball is arranged at the end of the screw rod of the tightening sealing bolt, a spherical cavity is formed in the rotation limiting sleeve corresponding to the rotation ball, and the rotation ball is embedded in the rotation limiting sleeve.

[0011] A plurality of sealing grooves are arranged on the outer side wall of the head end of the core rod, and sealing rings are arranged in the sealing grooves.

[0012] A limiting groove is arranged on the inner end surface of the sleeve away from the opening and corresponding to the position of the compression spring, and the compression spring is sleeved in the limiting groove.

[0013] An annular groove is formed on the side of the sealing ring gasket away from the supporting ring plate, and the groove width of the annular groove matches the thickness of the hose.

[0014] The arc-shaped clamp is arranged in the sealing groove closest to the sealing ring gasket, and at least one glue injection hole is opened on the side wall of the sleeve corresponding to the position of each sealing groove except the sealing groove where the arc-shaped clamp is arranged.

[0015] Four glue injection holes are provided on the side wall of the sleeve corresponding to the position of each remaining sealing groove except the sealing groove where the arc-shaped clamp is provided, and the four glue injection holes are distributed at equal intervals around the circumference.

[0016] The beneficial effects of the present invention are as follows: the high-pressure fluid hose connector of the present invention inserts the hydraulic hose or nylon tube along the core rod, and adopts a buckling method. The inner layer material of the hydraulic hose or nylon tube is extruded and deformed by a preset pressure, and fits together with the pagoda-shaped sealing pattern of the core rod through physical action to form a seal. At the same time, the sealing protrusion ring can form an extrusion bite on the hydraulic hose or nylon tube, and form a seal from the outside of the hydraulic hose or nylon tube. When the hydraulic hose or nylon tube is inserted to the end of the sleeve, it abuts against the sealing ring gasket, and squeezes the support ring plate to drive the sealing ring gasket to shrink inward along the axial direction of the core rod, and causes the compression spring to shrink. At this time, the sealing ring gasket is tightly fitted at the opening of the hydraulic hose or nylon tube, further enhancing the sealing effect. After a long time, when the hydraulic hose or nylon tube retreats and loosens, the elastic reset force of the compression spring drives the support ring plate to move outward, so that the sealing ring gasket continues to fit the hydraulic hose tightly, preventing leakage, and improving the overall sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A front view of the overall structure of a high-pressure fluid hose connector provided by an embodiment of the present invention;

[0018] Figure 2 A main cross-sectional view of a high-pressure fluid hose connector provided by an embodiment of the present invention;

[0019] Figure 3 A schematic structural diagram of an arc-shaped clamp in a high-pressure fluid hose connector provided by an embodiment of the present invention.

[0020] In the figure: 1 sleeve, 2 core rod, 3 sealing protrusion ring, 4 sealing ring gasket, 5 support ring plate, 6 compression spring, 7 sealing groove, 8 arc clamp, 9 threaded hole, 10 tightening sealing bolt, 11 rotation limit sleeve, 12 rotating ball, 13 sealing groove, 14 sealing ring, 15 limit groove, 16 annular groove, 17 glue injection hole. DETAILED DESCRIPTION

[0021] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0022] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] Combination Figures 1-3As shown, a high-pressure fluid hose connector provided by the present invention comprises a sleeve 1 and a core rod 2, the core rod 2 is coaxially arranged in the sleeve 1, one end of the sleeve 1 is open, and the other end is connected to the core rod 2, five sealing protrusion rings 3 are formed on the inner wall of the sleeve 1, and the core rod 2 has a pagoda-shaped sealing pattern structure. The end of the core rod 2 connected to the sleeve 1 is sleeved with a sealing ring gasket 4 and a supporting ring plate 5, the sealing ring gasket 4 is a soft rubber gasket, the supporting ring plate 5 is a hard metal circular plate, the sealing ring gasket 4 is arranged on the side of the supporting ring plate 5 away from the connection between the sleeve 1 and the core rod 2, the inner end surface of the sleeve 1 away from the end of the sleeve opening is evenly distributed with three compression springs 6 along the circumferential direction of the axis, the other end of the compression spring 6 is in contact with the supporting ring plate 5, and the opening chamfer of the sleeve 1 is 8°, which is convenient for pre-installing the hose.

[0024] The working process and principle of the above structure are as follows:

[0025] The hydraulic hose or nylon tube is inserted along the core rod 2, and the inner layer material of the hydraulic hose or nylon tube is squeezed and deformed by a preset pressure, and fits together with the pagoda-shaped sealing pattern of the core rod 2 through physical action to form a seal. At the same time, the sealing protrusion ring 3 can form an extrusion bite on the hydraulic hose or nylon tube, and form a seal from the outside of the hydraulic hose or nylon tube. When the hydraulic hose or nylon tube is inserted to the end of the sleeve, it abuts against the sealing ring gasket 4, and squeezes the supporting ring plate 5 to drive the sealing ring gasket 4 to shrink inward along the axial direction of the core rod 2, and causes the compression spring 6 to shrink. At this time, the sealing ring gasket 4 is tightly fitted at the opening of the hydraulic hose or nylon tube, further enhancing the sealing effect. After a long time, when the hydraulic hose or nylon tube retreats and loosens, the elastic reset force of the compression spring 6 drives the supporting ring plate 5 to move outward, so that the sealing ring gasket 4 continues to fit the hydraulic hose tightly to prevent leakage, thereby improving the overall sealing.

[0026] In another embodiment of the present invention, Figure 2 As shown, a sealing groove 7 is formed between two adjacent sealing protrusion rings 3, and two arc-shaped clamps 8 are arranged in one of the sealing grooves 7. A threaded hole 9 is opened on the side wall of the sleeve 1 at the position corresponding to each arc-shaped clamp 8. A tightening sealing bolt 10 is threadedly connected in the threaded hole 9. The nut of the tightening sealing bolt 10 is located outside the sleeve 1, and the other end of the tightening sealing bolt 10 is connected to the outer side surface of the arc-shaped clamp 8.

[0027] The arc clamp 8 arranged in the sealing groove 7 is pressed to protrude from the sealing groove 7 and clamp the hose by pressing the sealing bolt 10 to move in the threaded hole 9, thereby ensuring the sealing of the hose and preventing the hose from slipping or retreating on the core rod 2.

[0028] In another embodiment of the present invention, the arc-shaped clamp 8 is a semicircular clamp.

[0029] The semicircular clamp is provided, with a more comprehensive clamping area and better clamping effect.

[0030] In another embodiment of the present invention, the inner diameter of the sealing ring gasket 4 is in clearance fit with the outer diameter of the end of the core rod 2, and the outer diameter of the sealing ring gasket 4 is in clearance fit with the inner diameter of the tail end of the sleeve 1.

[0031] The inner diameter of the sealing ring gasket 4 is in clearance fit with the outer diameter of the core rod 2 to prevent gaps that may lead to poor sealing.

[0032] In another embodiment of the present invention, as Figure 3 shown, a rotation limiting sleeve 11 is provided in the middle of the outer side surface of the arc-shaped clamp 8, and a rotation ball 12 is provided at the end of the screw rod of the top-tightening sealing bolt 10. The rotation limiting sleeve 11 is formed with a spherical cavity corresponding to the rotation ball 12, and the rotation ball 12 is embedded in the rotation limiting sleeve 11.

[0033] Through the arrangement of the rotation limiting sleeve 11 and the rotation ball 12, it not only ensures the rotational connection between the arc-shaped clamp 8 and the top-tightening sealing bolt 10, but also facilitates the top-tightening sealing bolt 10 to drive the arc-shaped clamp 8 to move inwards or outwards.

[0034] In another embodiment of the present invention, a plurality of sealing grooves 13 are provided on the outer side wall of the head end of the core rod 2. There are two sealing grooves 13, and a sealing ring 14 is provided in each sealing groove 13.

[0035] The provision of the sealing ring 14 helps to enhance the sealing performance between the core rod 2 and the inner wall of the hose.

[0036] In another embodiment of the present invention, as Figure 2 shown, on the inner end surface of the sleeve 1 away from the opening, a limiting groove 15 is provided corresponding to the position of the compression spring 6. The compression spring 6 is sleeved in the limiting groove 15. There are four limiting grooves 15, and four compression springs 6 are correspondingly provided.

[0037] The provision of the limiting groove 15 facilitates the limitation of the compression spring 6 and prevents the compression spring 6 from being displaced under force.

[0038] In another embodiment of the present invention, as Figure 2 shown, an annular groove 16 is formed on the side surface of the sealing ring gasket 4 away from the support ring plate 5. The groove width of the annular groove 16 is matched with the thickness of the hose.

[0039] The provision of the annular groove 16 helps to better adapt to the hose size, so that the hose can be inserted into the annular groove 16, increasing the contact area between the two and improving the sealing performance.

[0040] In another embodiment of the present invention, the arc-shaped clamp 8 is disposed in the sealing groove 7 closest to the sealing ring gasket 4, and at least one glue injection hole 17 is formed in the side wall of the sleeve 1 corresponding to each of the remaining sealing grooves 7 except the sealing groove 7 where the arc-shaped clamp 8 is disposed.

[0041] The provision of the glue injection hole 17 facilitates the injection of glue into the sealing groove 7, which can not only fix the hose on the inner wall of the sleeve 1 to prevent it from slipping off, but also improve the sealing performance.

[0042] In another embodiment of the present invention, as Figure 1 shown, four glue injection holes 17 are formed in the side wall of the sleeve 1 corresponding to each of the remaining sealing grooves 7 except the sealing groove 7 where the arc-shaped clamp 8 is disposed, and the four glue injection holes 17 are circumferentially and equally spaced with respect to the axis of the sleeve 1.

[0043] The provision of the four glue injection holes 17 enables more sufficient and uniform glue injection, preventing the occurrence of voids in the sealing groove 7 and affecting its sealing performance.

[0044] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-pressure fluid hose joint, characterized in that: It comprises a sleeve and a core rod, wherein the core rod is coaxially arranged in the sleeve, one end of the sleeve is open, and the other end is connected to the core rod, a plurality of sealing protrusion rings are formed on the inner wall of the sleeve, and the core rod has a pagoda-shaped sealing pattern structure in appearance, and an end portion of the core rod connected to the sleeve is sleeved with a sealing ring gasket and a supporting ring plate, the sealing ring gasket is arranged on the side of the supporting ring plate away from the connection between the sleeve and the core rod, and a plurality of compression springs are evenly distributed along the circumferential direction of the axis on the inner end surface of the sleeve away from the opening of the sleeve, and the other end of the compression spring is in contact with the supporting ring plate.

2. The high-pressure fluid hose connector according to claim 1, characterized in that: A sealing groove is formed between two adjacent sealing protrusion rings, a pair of arc-shaped clamps are arranged in one of the sealing grooves, threaded holes are opened on the side wall of the sleeve at the position corresponding to each arc-shaped clamp, a tightening sealing bolt is threadedly connected in the threaded hole, the nut of the tightening sealing bolt is located outside the sleeve, and the other end of the tightening sealing bolt is connected to the outer side surface of the arc-shaped clamp.

3. The high-pressure fluid hose connector according to claim 2, wherein: The arc-shaped clamp is a semicircular clamp.

4. A high-pressure fluid hose joint according to claim 1, characterized in that: The inner diameter of the sealing ring gasket is clearance matched with the outer diameter of the end of the core rod, and the outer diameter of the sealing ring gasket is clearance matched with the inner diameter of the tail end of the sleeve.

5. The high-pressure fluid hose connector according to claim 2, characterized in that: A rotation limiting sleeve is arranged in the middle of the outer side surface of the arc-shaped clamp, a rotation ball is arranged at the end of the screw rod of the tightening sealing bolt, a spherical cavity is formed in the rotation limiting sleeve corresponding to the rotation ball, and the rotation ball is embedded in the rotation limiting sleeve.

6. The high-pressure fluid hose joint according to claim 1, wherein: A plurality of sealing grooves are arranged on the outer side wall of the head end of the core rod, and sealing rings are arranged in the sealing grooves.

7. A high-pressure fluid hose joint according to claim 1, characterized in that: A limiting groove is arranged on the inner end surface of the sleeve away from the opening and corresponding to the position of the compression spring, and the compression spring is sleeved in the limiting groove.

8. The high-pressure fluid hose connector according to claim 1, wherein: An annular groove is formed on the side of the sealing ring gasket away from the supporting ring plate, and the groove width of the annular groove matches the thickness of the hose.

9. The high-pressure fluid hose joint according to claim 2, wherein: The arc-shaped clamp is arranged in the sealing groove closest to the sealing ring gasket, and at least one glue injection hole is opened on the side wall of the sleeve corresponding to the position of each sealing groove except the sealing groove where the arc-shaped clamp is arranged.

10. A high-pressure fluid hose connector according to claim 9, characterized in that: Four glue injection holes are provided on the side wall of the sleeve corresponding to the position of each remaining sealing groove except the sealing groove where the arc-shaped clamp is provided, and the four glue injection holes are distributed at equal intervals around the circumference.

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