Ferrule type high-sealing straight joint

Abstract

The utility model discloses a clamping sleeve type high-sealing straight joint which comprises a joint body, a clamping sleeve, a self-tightening sealing structure, a sealing sleeve, a sealing ring and meshing teeth. A clamping sleeve arranged on the outer wall of a pipeline in a sleeving mode is arranged in the connector body, a self-tightening sealing structure is arranged in the clamping sleeve and comprises a sealing sleeve, a sealing ring and meshing teeth, the sealing sleeve is embedded into one end of the interior of the clamping sleeve, the sealing ring is embedded into the other end of the interior of the clamping sleeve, and the sealing ring is used for being arranged on the outer wall of the pipeline in a sleeving mode. The inner wall of the sealing sleeve is provided with meshing teeth, the meshing teeth are annularly distributed along the inner wall of the sealing sleeve, the tooth-shaped front edge is a sharp corner with slight radian, the rear edge is a vertical retaining face, the outer wall of the clamping sleeve is provided with a plurality of anti-rotation ratchets, the anti-rotation ratchets are annularly distributed along the outer wall of the clamping sleeve at equal intervals, and the whole anti-rotation ratchets are of a triangular structure. According to the utility model, the connection strength between the pipeline and the joint body can be improved, so that the pipeline is not easy to loosen.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe connectors, and in particular to the technical field of a compression fitting type high-seal straight connector. Background Technology

[0002] Straight-through connectors are mainly used for straight-line connections to maintain the straightness and unobstructedness of the fluid transmission path. They are suitable for applications requiring high-purity fluid transmission, corrosion resistance, and high-temperature resistance, such as chemical, pharmaceutical, and food processing industries.

[0003] Currently available straight connectors often have loose connections, leading to leaks. Improper installation of the connector can easily cause the need for maintenance later, resulting in a shorter service life.

[0004] To address the problems mentioned above, for example, application number CN202123404657.9 discloses a leak-proof straight connector, including a straight connector and a connecting pipe. A connecting plate is welded to the outer surface of the straight connector, and a pressure plate is fitted inside the connecting plate. A locking nut is fitted on the outer side of the connecting pipe, and a sealing ring is fitted on the outer side of the connecting pipe. A washer is fitted inside one end of the straight connector, and a baffle is welded inside the straight connector. A pressure sleeve is fitted inside one end of the straight connector, and a connecting rod is welded to one end of the pressure sleeve. A push plate is welded to one end of the connecting rod, and a spring is fitted on the surface of the connecting rod. A sealing gasket is also fitted on the surface of the connecting rod. After connection, this straight connector can be effectively fixed to the connecting water pipe, preventing the connector from rotating due to vibration and loosening.

[0005] However, the above-mentioned structure has poor sealing performance and poor pressure resistance. The straight-through joint is always under high pressure, which makes it very easy for the pipeline to fall off the joint and cause serious accidents.

[0006] To address the problems mentioned above, for example, application number CN202420071982.2 discloses a pressure-resistant and explosion-proof straight-through connector, including a connector body and a support sleeve. Both outer walls of the support sleeve are fixedly connected to tapered sleeves, and one outer wall of each tapered sleeve has a threaded groove. Both inner walls of the connector body are slidably connected to sealing gaskets, and one outer wall of each sealing gasket is fixedly connected to a threaded connecting pipe. The outer wall of the support sleeve is fixedly connected to a reinforcing rib, and the outer wall of each reinforcing rib is fixedly connected to a pressure-resistant sleeve. By including the connector body, pressure-resistant sleeve, support sleeve, tapered sleeve, and reinforcing rib, the reinforcing rib on the outer wall of the support sleeve and the pressure-resistant sleeve that abuts against the inner wall of the connector body further enhance the structural pressure resistance. The threaded grooves on both sides of the tapered sleeve allow for threaded connection of the threaded connecting pipe and sealing gasket on both sides, preventing pressure leakage and improving overall pressure resistance. Better sealing prevents pressure leakage from affecting pressure resistance. Furthermore, the internal pressure-resistant structure of the connector body further enhances the pressure resistance.

[0007] However, the above structure still has the following drawbacks:

[0008] The above structure has a threaded groove on the ferrule, which allows it to connect the threaded pipe and the sealing gasket on both sides through threads. However, the connection strength is insufficient under long-term use with only threaded connection, which makes the pipe easy to loosen from the joint body and thus affect the sealing of the connection. Summary of the Invention

[0009] The purpose of this invention is to solve the problems in the prior art by proposing a compression fitting type high-seal straight connector, which can improve the connection strength between the pipe and the connector body, thus making it less prone to loosening.

[0010] To achieve the above objectives, this utility model proposes a ferrule-type high-sealing straight connector, comprising a connector body, a ferrule, a self-tightening sealing structure, a sealing sleeve, a sealing ring, and engagement teeth; the connector body has a ferrule fitted onto the outer wall of a pipe, the ferrule has a self-tightening sealing structure, the self-tightening sealing structure includes a sealing sleeve, a sealing ring, and engagement teeth, the sealing sleeve is embedded in one end of the ferrule, the sealing ring is embedded in the other end of the ferrule, and the sealing ring is used to fit onto the outer wall of the pipe; the inner wall of the sealing sleeve has engagement teeth, the engagement teeth are distributed circumferentially along the inner wall of the sealing sleeve, and the leading edge of the teeth is a slightly curved sharp angle, and the trailing edge is a vertical anti-reverse surface.

[0011] Preferably, the outer wall of the ferrule is provided with multiple anti-rotation ratchet teeth, which are distributed in a ring at equal intervals along the outer wall of the ferrule, and the anti-rotation ratchet teeth are in a triangular structure as a whole.

[0012] Preferably, the inner wall of the connector body is provided with a spiral guide groove that engages with the anti-rotation ratchet, and the tip of the anti-rotation ratchet is embedded in the spiral guide groove to complete the mechanical locking.

[0013] Preferably, the bottom of the spiral guide groove is provided with a stepped limiting boss, and the height of the limiting boss increases step by step along the assembly tightening direction.

[0014] Preferably, the sealing sleeve has a conical structure, and the inner diameter of the sealing sleeve gradually decreases along the insertion direction of the pipe.

[0015] Preferably, the sealing ring is an elastic rubber ring.

[0016] The beneficial effects of this utility model are:

[0017] 1. This utility model enables a tight connection between the pipe and the connector body through the combined action of the sealing sleeve, sealing ring, and interlocking teeth. By designing the sealing sleeve as a conical structure, when the pipe is inserted into the sealing sleeve, the conical guide surface guides the pipe to center, and the radial friction force generated by the inclined surface compression forms a preliminary lock. At the same time, the interlocking teeth contact the pipe wall, and the vertical anti-retraction surface forms a one-way lock to prevent loosening. The sealing ring can increase the sealing performance at the connection between the pipe and the connector body, thereby improving the sealing effect.

[0018] 2. This utility model improves the connection between the ferrule and the connector body by using anti-rotation ratchet and spiral guide groove together. The anti-rotation ratchet is embedded in the spiral guide groove to achieve automatic locking when tightened. At the same time, the spiral guide groove guides the ferrule to screw in along a predetermined path to prevent uneven sealing caused by skew, thereby preventing the ferrule from coming out of the connector body and improving the tightness of the pipeline connection. Attached Figure Description

[0019] Figure 1 This is a front view of a compression fitting type high-seal straight-through connector of this utility model;

[0020] Figure 2 This is a plan view of the ferrule of a ferrule-type high-seal straight-through connector according to this utility model;

[0021] Figure 3 This is an exploded view of a compression fitting type high-seal straight-through connector of this utility model;

[0022] Figure 4 This is a schematic diagram of the spiral guide groove of a compression fitting type high-seal straight-through connector according to this utility model;

[0023] Figure 5 This is an overall plan view of a compression fitting type high-seal straight-through connector of this utility model;

[0024] Figure 6 This is an overall cross-sectional view of a compression fitting type high-seal straight-through connector of this utility model;

[0025] In the figure: 1-Connector body, 101-Spiral guide groove, 1011-Limiting boss, 2-Folding sleeve, 201-Anti-rotation ratchet, 3-Self-tightening sealing structure, 301-Sealing sleeve, 302-Sealing ring, 3011-Interlocking teeth. Detailed Implementation

[0026] See Figures 1 to 6This utility model discloses a compression fitting type high-sealing straight connector, comprising a connector body 1, a compression fitting 2, a self-tightening sealing structure 3, a sealing sleeve 301, a sealing ring 302, and engagement teeth 3011; the connector body 1 is provided with a compression fitting 2 fitted onto the outer wall of the pipe, the compression fitting 2 is provided with a self-tightening sealing structure 3, the self-tightening sealing structure 3 includes a sealing sleeve 301, a sealing ring 302, and engagement teeth 3011, the sealing sleeve 301 is embedded in one end of the compression fitting 2, and the sealing ring 302 is embedded in the other end of the compression fitting 2, the sealing ring... 302 is used to be sleeved on the outer wall of the pipe; the inner wall of the sealing sleeve 301 is provided with interlocking teeth 3011, the interlocking teeth 3011 are distributed in a ring along the inner wall of the sealing sleeve 301, and the front edge of the teeth is a slightly curved sharp corner and the rear edge is a vertical anti-retraction surface. The interlocking teeth 3011 contact the pipe wall, the curved sharp corner can prevent the interlocking teeth 3011 from damaging the pipe wall surface, and the vertical anti-retraction surface forms a one-way lock to prevent loosening. The sealing ring 302 can increase the sealing performance at the connection between the pipe and the joint body 1, thereby improving the sealing effect.

[0027] See Figure 2 The outer wall of the sleeve 2 is provided with a plurality of anti-rotation ratchet teeth 201. The anti-rotation ratchet teeth 201 are distributed in a ring at equal intervals along the outer wall of the sleeve 2, and the anti-rotation ratchet teeth 201 are in a triangular structure. The ring distribution makes the locking force evenly spread to the entire circumference, thereby improving the fastening effect.

[0028] See Figure 3 The inner wall of the connector body 1 is provided with a spiral guide groove 101 that cooperates with the anti-rotation ratchet 201. The tip of the anti-rotation ratchet 201 is embedded in the spiral guide groove 101 to complete mechanical locking. Through the cooperation between the anti-rotation ratchet 201 and the spiral guide groove 101, it can be automatically locked when tightened.

[0029] See Figure 4 The bottom of the spiral guide groove 101 is provided with a stepped limiting boss 1011. The height of the limiting boss 1011 increases step by step along the assembly tightening direction. When the end face of the limiting boss 1011 abuts against the anti-rotation ratchet 201, the biting teeth reach the optimal insertion depth, thereby improving the locking effect.

[0030] See Figure 3 The sealing sleeve 301 has a conical structure, and the inner diameter of the sealing sleeve 301 gradually decreases along the insertion direction of the pipe. By setting the sealing sleeve 301 to a conical structure, when the pipe is inserted into the sealing sleeve 301, the conical guide surface guides the pipe to center, and the radial friction force generated by the inclined surface extrusion forms a preliminary locking.

[0031] See Figure 3The sealing ring 302 is an elastic rubber ring. When the sealing ring 302 is axially compressed, it expands radially and fits tightly against the outer wall of the pipe and the inner wall of the joint body 1, eliminating micro gaps. At the same time, the surface molecules viscoelastically fill the micro-unevenness of the metal surface, forming a physical isolation layer. When the pipe is slightly eccentric or vibrates, the rubber compensates for the displacement deviation in real time through elastic deformation, and at the same time bears radial extrusion force and axial shear force. Through volume elastic deformation, it disperses stress and prevents sealing failure caused by local stress concentration.

[0032] The working process of this utility model:

[0033] In the operation of this utility model, a ferrule-type high-seal straight-through connector, the ferrule 2 is first threaded into the connector body 1. When the ferrule 2 is tightened, the anti-rotation ratchet 201 on the outer wall is embedded in the spiral guide groove 101 on the inner wall of the connector body 1, achieving a locking effect. Then, the pipe is inserted into the sealing sleeve 301. The conical guide surface guides the pipe to center, and the radial friction force generated by the inclined surface extrusion forms a preliminary lock. At the same time, the biting teeth 3011 contact the pipe wall. The rounded sharp corners can prevent the biting teeth 3011 from damaging the pipe wall surface. The vertical anti-reverse surface forms a one-way lock to prevent loosening. The sealing ring 302 can tightly fit the outer wall of the pipe and the inner wall of the connector body 1, eliminating micro gaps. At the same time, the surface molecular viscoelasticity fills the micro-unevenness of the metal surface, forming a physical isolation layer. When the pipe is slightly eccentric or vibrates, the rubber compensates for the displacement deviation in real time through elastic deformation, and at the same time bears the radial extrusion force and axial shear force. The volume elastic deformation disperses the stress, preventing the seal failure caused by local stress concentration.

[0034] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the protection scope of the present invention.

Claims

1. A compression fitting type high-sealing straight connector, characterized in that: The fitting includes a connector body (1), a ferrule (2), a self-tightening sealing structure (3), a sealing sleeve (301), a sealing ring (302), and a locking tooth (3011). The connector body (1) is provided with a ferrule (2) fitted onto the outer wall of the pipe. The ferrule (2) is provided with a self-tightening sealing structure (3). The self-tightening sealing structure (3) includes a sealing sleeve (301), a sealing ring (302), and a locking tooth (3011). The sealing sleeve (301) is embedded in one end of the ferrule (2), and the sealing ring (302) is embedded in the other end of the ferrule (2). The sealing ring (302) is used to fit onto the outer wall of the pipe. The inner wall of the sealing sleeve (301) is provided with a locking tooth (3011). The locking tooth (3011) is distributed in a ring along the inner wall of the sealing sleeve (301), and the front edge of the tooth is a slightly curved sharp corner, and the rear edge is a vertical anti-reverse surface.

2. The compression fitting type high-sealing straight connector as described in claim 1, characterized in that: The outer wall of the sleeve (2) is provided with a plurality of anti-rotation ratchet teeth (201). The anti-rotation ratchet teeth (201) are distributed in a ring at equal intervals along the outer wall of the sleeve (2), and the anti-rotation ratchet teeth (201) are in a triangular structure as a whole.

3. A compression fitting type high-sealing straight connector as described in claim 2, characterized in that: The inner wall of the connector body (1) is provided with a spiral guide groove (101) that cooperates with the anti-rotation ratchet (201). The tip of the anti-rotation ratchet (201) is embedded in the spiral guide groove (101) to complete the mechanical locking.

4. A compression fitting type high-sealing straight connector as described in claim 3, characterized in that: The bottom of the spiral guide groove (101) is provided with a stepped limiting boss (1011), and the height of the limiting boss (1011) increases step by step along the assembly tightening direction.

5. A compression fitting type high-seal straight connector as described in claim 1, characterized in that: The sealing sleeve (301) has a conical structure, and the inner diameter of the sealing sleeve (301) gradually decreases along the insertion direction of the pipe.

6. A compression fitting type high-seal straight connector as described in claim 1, characterized in that: The sealing ring (302) is an elastic rubber ring.

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