A pipe joint

Abstract

The application discloses a pipe joint, which comprises a body, a claw assembly, a first sealing ring, a second sealing ring, a sealing holder and a fixing assembly, wherein the body is provided with a cavity and a through hole, the cavity is communicated with the through hole, the claw assembly is provided with a clamping part used for clamping a connecting pipe, the sealing holder is provided with a containing groove, the first sealing ring is sleeved on the sealing holder, the second sealing ring is located in the containing groove, and the second sealing ring and the first sealing ring are respectively located on the inner side and the outer side of the sealing holder; and the fixing assembly abuts against the sealing holder, and the claw assembly, the sealing holder and the fixing assembly are sequentially arranged in the cavity. When the sealing holder abuts against the clamping part, the clamping state of the clamping part and the connecting pipe is released, so that the connecting pipe is separated from the body, thereby reducing the risk of scratching and damaging the surface of the connecting pipe when the connecting pipe is pulled out outward, further reducing the leakage risk of the connecting pipe and the pipe joint, and improving the sealing effect of the pipe joint.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe fittings, in particular to a pipe joint. BACKGROUND

[0002] Pipe joints are important components in connecting pipelines in modern industrial equipment. Pipe joints are widely used in mechanical, chemical, petroleum, metallurgical, food and other industries. The pipeline is generally connected by two or more pipes through the pipe joint. For example, two connecting pipes are connected through the pipe joint, the clamping jaw in the pipe joint clamps the connecting pipe inserted into the pipe joint, thereby realizing the connection between the two connecting pipes, and further realizing the long-distance transmission of matter.

[0003] However, this connection mode of the pipe joint and the connecting pipe is easy to scratch the sealing surface. For example, when replacing the pipe joint, the connecting pipe needs to be pulled out of the pipe joint, which is easy to scratch the sealing surface during the pulling-out process, resulting in pipeline leakage. SUMMARY

[0004] The purpose of the embodiment of the present application is to provide a pipe joint to solve the problem of scratching the sealing surface of the connecting pipe when the connecting pipe is pulled out of the pipe joint.

[0005] In order to solve the above problems, the following technical solutions are adopted in the present application:

[0006] The present application provides a pipe joint, comprising:

[0007] a body provided with a cavity and a through hole, the cavity and the through hole being in communication;

[0008] a clamping jaw assembly provided with a clamping portion for clamping a connecting pipe;

[0009] a first sealing ring;

[0010] a second sealing ring;

[0011] a sealing retaining member provided with a receiving groove, the first sealing ring being sleeved on the sealing retaining member, the second sealing ring being located in the receiving groove, the second sealing ring and the first sealing ring being located on the inner side and the outer side of the sealing retaining member, respectively; and

[0012] a fixing assembly abutting against the sealing retaining member, the clamping jaw assembly, the sealing retaining member and the fixing assembly being sequentially arranged in the cavity;

[0013] When the sealing retaining member abuts against the clamping portion, the clamping state of the clamping portion and the connecting pipe is released, so that the connecting pipe is separated from the body.

[0014] Further, the sealing holder comprises a body and an abutting portion, the body is provided with the accommodating groove, a limiting platform is formed between the abutting portion and the body, the first sealing ring is sleeved on the abutting portion, and the limiting platform is used for limiting the first sealing ring in the direction of the connecting pipe.

[0015] Further, the body is further provided with a groove, the groove is located on the circumferential side of the body, and the groove is communicated with the accommodating groove.

[0016] Further, the claw assembly comprises:

[0017] a chuck holder, one end of the chuck holder is in abutment with the inner wall of the body;

[0018] a chuck cover, provided with a pressing portion; and

[0019] a chuck, provided with the clamping portion, the pressing portion is in abutment with the chuck, so that the chuck is pressed on the other end of the chuck holder.

[0020] Further, the chuck holder is provided with an abutting boss, the body is provided with an abutting groove, and the abutting boss is in limiting abutment with the abutting groove.

[0021] Further, the chuck holder is provided with a limiting groove, the chuck is located in the limiting groove, and the pressing portion is in abutment with the chuck, so that the chuck is pressed on the inner wall of the limiting groove.

[0022] Further, the chuck cover is provided with a protruding portion, the body is provided with a positioning groove matched with the protruding portion, the positioning groove accommodates the protruding portion, so as to position the chuck cover.

[0023] Further, the fixing assembly comprises a fixing member and a tail plug, the tail plug is in abutment with the sealing holder, and the fixing member connects the tail plug and the body.

[0024] Further, the body is provided with a limiting groove, the fixing member is provided with a protruding block matched with the limiting groove, and the limiting groove accommodates the protruding block.

[0025] Further, the body is provided with the cavity on both sides, the two cavities are symmetrically arranged, and the through holes are respectively communicated with the two cavities.

[0026] The pipe connector of this embodiment includes a body, a claw assembly, a first sealing ring, a second sealing ring, a sealing retainer, and a fixing assembly. The body has a cavity and a through hole, which communicate with each other. The claw assembly has a locking portion for locking the connecting pipe. The sealing retainer has a receiving groove. The first sealing ring is fitted onto the sealing retainer, and the second sealing ring is located within the receiving groove. The second and first sealing rings are located on the inner and outer sides of the sealing retainer, respectively. The second and first sealing rings seal the connecting pipe, improving the sealing effect of the pipe connector. The fixing assembly abuts against the sealing retainer. The claw assembly, sealing retainer, and fixing assembly are sequentially arranged within the cavity. When the sealing retainer abuts against the locking portion, the locking portion is released from the connecting pipe, allowing the connecting pipe to detach from the body. This reduces the risk of scratching or damaging the surface of the connecting pipe when it is pulled outwards, thereby reducing the risk of leakage at the connection between the connecting pipe and the pipe connector and improving the sealing effect of the pipe connector. Attached Figure Description

[0027] Figure 1 An exploded view of a pipe fitting provided in an embodiment of this application;

[0028] Figure 2 A cross-sectional view of a pipe fitting provided in an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the structure of a sealing retainer provided in an embodiment of this application;

[0030] Figure 4 for Figure 3 A schematic diagram of the sealing retainer from another perspective;

[0031] Figure 5 This is a schematic diagram of the structure of a chuck provided in an embodiment of this application;

[0032] Figure 6 This is a schematic diagram of the structure of a chuck retainer provided in an embodiment of this application;

[0033] Figure 7 for Figure 6 A schematic diagram of the chuck retainer structure from another perspective;

[0034] Figure 8 An exploded view of a claw assembly provided in an embodiment of this application;

[0035] Figure 9 for Figure 8 Cross-sectional view of the middle claw component;

[0036] Figure 10 for Figure 5 A schematic diagram of the chuck in another state, wherein the locking part is released from the locking state of the connecting tube;

[0037] Figure 11 A structural schematic view of a fixing assembly provided by an embodiment of the present application is shown in FIG. 1.

[0038] Figure 12 A structural schematic view of a fixing assembly provided by an embodiment of the present application is shown in FIG. 1. Figure 11 A sectional view of the fixing assembly is shown in FIG. 2.

[0039] Figure 13 A sectional view of the body provided by an embodiment of the present application is shown in FIG. 3.

[0040] Figure 14 A schematic view of an existing pipe joint is shown in FIG. 4.

[0041] Explanation of reference signs:

[0042] 1, body; 11, cavity; 12, through hole; 13, abutting groove; 14, positioning groove; 15, limiting groove; 2, clamping jaw assembly; 21, chuck holder; 211, abutting boss; 212, limiting groove; 22, chuck cover; 221, pressing part; 222, protruding part; 23, chuck; 23A, clamping part; 3, first sealing ring; 4, second sealing ring; 5, sealing holder; 51, body; 52, abutting part; 5A, accommodating groove; 5B, limiting platform; 5C, groove; 6, fixing assembly; 61, fixing part; 611, protruding block; 62, tail plug; 621, ring groove; 622, through hole; P, connecting pipe; Q, existing pipe joint; R, clamping jaw; S, outer surface. DETAILED DESCRIPTION

[0043] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0044] It should be noted that the embodiments and technical features in the embodiments of the present application can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as an explanation and description of the purpose of the present application, and should not be regarded as an improper limitation on the present application.

[0045] It should be understood that the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings. These orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0046] The existing pipe connection condition is as shown in FIG. 4. Figure 14As shown, two connecting pipes P are connected through the existing pipe joint Q, and the claws R in the existing pipe joint Q clamp the connecting pipe P inserted into the pipe joint. However, the connecting pipe P of this pipe joint is easy to scratch the sealing surface when disassembled. For example, when the pipeline is maintained, the pipe joint is replaced, or the connecting pipe P is disassembled, the connecting pipe P needs to be pulled out of the existing pipe joint Q. Since the claws R clamp the connecting pipe P, when the connecting pipe P is pulled out, the claws R scratch and damage the outer surface S of the connecting pipe P, and leakage is easy to occur. In particular, in the case of repeated or multiple disassembly of the pipeline, the degree of scratching of the outer surface S is more obvious, and the risk of pipeline leakage is greatly increased.

[0047] Therefore, as shown in Figure 1 、 Figure 2 and Figure 10 , the embodiment of the present application provides a pipe joint, which comprises a body 1, a claw assembly 2, a first sealing ring 3, a second sealing ring 4, a sealing holder 5 and a fixing assembly 6. The body 1 is provided with a cavity 11 and a through hole 12, the cavity 11 and the through hole 12 are communicated, the claw assembly 2 is provided with a clamping part 23A for clamping the connecting pipe P, the sealing holder 5 is provided with a receiving groove 5A, the first sealing ring 3 is sleeved on the sealing holder 5, the second sealing ring 4 is located in the receiving groove 5A, the second sealing ring 4 and the first sealing ring 3 are respectively located on the inner side and the outer side of the sealing holder 5, and the fixing assembly 6 abuts against the sealing holder 5. The claw assembly 2, the sealing holder 5 and the fixing assembly 6 are sequentially arranged in the cavity 11 of the body 1. When the sealing holder 5 abuts against the clamping part 23A, the clamping state of the clamping part 23A and the connecting pipe P is released, so that the connecting pipe P is separated from the body 1.

[0048] Specifically, the claw assembly 2, the sealing holder 5 and the fixing assembly 6 are sequentially arranged in the cavity 11 of the body 1, the first sealing ring 3 is sleeved on the sealing holder 5, the second sealing ring 4 is located in the receiving groove 5A of the body 1, and the second sealing ring 4 and the first sealing ring 3 are respectively located on the inner side and the outer side of the sealing holder 5. The connecting pipe P is sequentially arranged through the claw assembly 2, the sealing holder 5 and the fixing assembly 6, so that the connecting pipe P is communicated with the through hole 12 of the body 1, and the connecting pipes P on both sides are communicated through the through hole 12 (see Figure 13 ). After the pipe joint and the connecting pipe P are connected, the clamping part 23A clamps the connecting pipe P, the risk of loosening of the connecting pipe P is reduced, the connecting pipe P is sealed by the second sealing ring 4 and the first sealing ring 3, and the sealing effect of the pipe joint is improved. When the connecting pipe P needs to be pulled out of the pipe joint, the sealing holder 5 abuts against the clamping part 23A, the clamping state of the clamping part 23A and the connecting pipe P is released, so that the connecting pipe P can be conveniently pulled out of the body 1.

[0049] For example, two connecting pipes P are connected to the two sides of the pipe joint respectively, the two connecting pipes P are connected through the pipe joint, the length of the connecting pipe P is extended to meet the requirements of different scenes and different lengths, and problems such as excessive length, excessive shortness, and winding of the connecting pipe P affecting the flow caused by a single connecting pipe P are avoided.

[0050] When it is needed to pull out the connecting pipe P from the pipe joint, the sealing holder 5 is first extruded into the cavity 11, so that the sealing holder 5 abuts against the clamping portion 23A, thereby releasing the clamping state of the clamping portion 23A and the connecting pipe P, and facilitating subsequent pulling out of the connecting pipe P from the body 1. Meanwhile, in the process of pulling out the connecting pipe P from the body 1, the risk of scratching and damaging the surface of the connecting pipe P when the connecting pipe P is pulled out outward is reduced, thereby reducing the risk of leakage at the connecting position of the connecting pipe P and the pipe joint and improving the sealing effect of the pipe joint.

[0051] It should be understood that, as shown in Figure 14 , when the connecting pipe P is pulled out from the existing pipe joint Q, the connecting pipe P is clamped by the clamping jaw R, the clamping jaw R causes the clamping of the connecting pipe P, and the outer surface S of the connecting pipe P is scratched and damaged when the connecting pipe P is pulled out outward. In the pipe joint of the embodiment of the present application, the pulling-out direction of the connecting pipe P from the body 1 is opposite to the direction when the sealing holder 5 is extruded into the cavity 11, the sealing holder 5 abuts against the clamping portion 23A, the clamping state of the clamping portion 23A and the connecting pipe P is released, at this time, the clamping portion 23A and the connecting pipe P are in a "non-contact" state, thereby reducing the risk of scratching and damaging the surface of the connecting pipe P when the connecting pipe P is pulled out outward (see Figure 10 ).

[0052] It should be noted that the above is only an example of a pipe joint connecting two connecting pipes P, and is not a limitation on the protection scope of the pipe joint of the embodiment of the present application. In some other applications of the pipe joint, the pipe joint of the embodiment of the present application can be used, for example, a three-way pipe joint, a four-way pipe joint, a five-way pipe joint, etc. can use the above pipe joint, thereby reducing the risk of scratching the sealing surface when the connecting pipe P is pulled out of the pipe joint, and achieving the effect of extending the pipeline or pipeline shunting through the pipe joint.

[0053] In an embodiment, as shown in Figure 13 , the two sides of the body 1 are provided with cavities 11, the two cavities 11 are symmetrically arranged, and the through holes 12 respectively communicate the two cavities 11. Specifically, the two cavities 11 are symmetrically arranged on the two sides of the body 1, the two cavities 11 respectively accommodate two different connecting pipes P from the two sides, and the two connecting pipes P are communicated through the through holes 12. Since the two cavities 11 are symmetrically arranged and the through holes 12 respectively communicate the two cavities 11, when the pipe joint is connected with the connecting pipe P, it can be inserted from any one cavity 11, thereby effectively avoiding the problem that the main and secondary levels and the connection need to be performed in a specific direction.

[0054] It should be noted that the two cavities 11 are symmetrically arranged, thereby reducing the process of the body 1 in the manufacturing process, so that the same process or equipment is used to process and manufacture both sides of the body 1, saving the cost of the body 1 and improving the economy.

[0055] In an embodiment, as shown in Figure 8 and Figure 9 , the jaw assembly 2 comprises a chuck holder 21, a chuck cover 22 and a chuck 23, wherein one end of the chuck holder 21 abuts against the inner wall of the body 1, the chuck cover 22 is provided with a pressing part 221, and the chuck 23 is provided with a clamping part 23A, and the pressing part 221 abuts against the chuck 23 to press the chuck 23 to the other end of the chuck holder 21.

[0056] Specifically, the chuck holder 21 and the chuck cover 22 are both provided with a central hole for passing through the connecting pipe P, and the chuck 23 is provided with a plurality of clamping parts 23A arranged at equal intervals in the circumferential direction (see Figure 5 ). The clamping part 23A clamps the connecting pipe P to reduce the risk of the connecting pipe P coming out of the cavity 11. It should be noted that the structure of the chuck 23 is small and is easy to deviate or tilt when arranged separately in the body 1, which affects the clamping effect of the connecting pipe P. The pressing part 221 of the chuck cover 22 abuts against the chuck 23 to press the chuck 23 to the other end of the chuck holder 21, and the chuck holder 21 and the chuck cover 22 realize the positioning and limitation of the chuck 23, thereby improving the position accuracy of the chuck 23 and further improving the clamping effect of the jaw assembly 2.

[0057] In particular, during the assembly or disassembly of the jaw assembly 2, since the jaw assembly 2 comprises the chuck holder 21, the chuck cover 22 and the chuck 23, and the pressing part 221 of the chuck cover 22 abuts against the chuck 23 to press the chuck 23 to the other end of the chuck holder 21, the jaw assembly 2 can be assembled or disassembled as a whole, thereby improving the assembly and disassembly efficiency of the jaw assembly 2.

[0058] In an embodiment, as shown in Figure 6 and Figure 7 , the chuck holder 21 is provided with a limiting groove 212, the chuck 23 is located in the limiting groove 212, and the pressing part 221 abuts against the chuck 23 to press the chuck 23 to the inner wall of the limiting groove 212.

[0059] Specifically, the shape of the limiting groove 212 and the shape of the pressing portion 221 are adapted to the outer contour of the chuck 23, and the pressing portion 221 abuts against the chuck 23 to press the chuck 23 against the inner wall end face of the limiting groove 212, thereby limiting the chuck 23 in both the circumferential direction and the radial direction, further improving the position accuracy of the chuck 23, reducing the risk of deviation and tilting of the chuck 23, and improving the clamping effect of the chuck jaw assembly 2.

[0060] For example, the limiting groove 212 is circular, the outer contour of the chuck 23 is also circular, and the pressing portion 221 is correspondingly adapted to be cylindrical. When the pressing portion 221 abuts against the chuck 23 located in the circular limiting groove 212, the chuck 23 is pressed against the inner wall end face of the circular limiting groove 212.

[0061] In particular, the limiting groove 212 is provided with a dismounting groove on the circumferential side, which is used to disengage the chuck 23 located in the limiting groove 212 when dismounting the chuck 23. For example, the dismounting groove is in the form of a notch, and two notches are symmetrically located on the circumferential side of the limiting groove 212. When it is necessary to dismount the chuck 23 from the limiting groove 212, the chuck 23 can be quickly and conveniently dismounted through the notch-shaped dismounting groove and disengaged from the limiting groove 212, avoiding the use of other tools.

[0062] It should be noted that the above is only exemplarily described in the case of the limiting groove 212 being circular, and is not a limitation on the protection scope of the present application. In some other cases, the shape of the limiting groove 212 can be changed to meet the needs in different scenarios, processing or assembly.

[0063] In an embodiment, as shown in Figure 7 and Figure 13 The chuck holder 21 is provided with an abutting boss 211, and the body 1 is provided with an abutting groove 13, and the abutting boss 211 is limited and abuts against the abutting groove 13. Specifically, the abutting groove 13 is located on one side of the body 1 close to the through hole 12, and the abutting groove 13 is in communication with the through hole 12. When the chuck holder 21 is located in the cavity 11 of the body 1, the abutting boss 211 is limited and abuts against the abutting groove 13, thereby facilitating the assembly of the chuck holder 21 and improving the assembly efficiency of the chuck holder 21. At the same time, since the abutting groove 13 accommodates the abutting boss 211, the abutting boss 211 is limited and abuts against the abutting groove 13, thereby limiting the position of the chuck holder 21 in both the circumferential direction and the radial direction, improving the position accuracy of the chuck holder 21, reducing the risk of sealing performance caused by deviation of the chuck holder 21, and further improving the sealing effect when sealing the connecting pipe P.

[0064] For example, the abutting boss 211 and the abutting groove 13 are both in a mutually adapted cylindrical shape, when the abutting boss 211 of the chuck holder 21 is located in the abutting groove 13 of the body 1, the abutting groove 13 accommodates the abutting boss 211, the abutting boss 211 is limited by the abutting groove 13, and the circumferential and radial positions of the chuck holder 21 are both limited by the abutting of the abutting groove 13 and the abutting boss 211, so that the chuck holder 21 is conveniently loaded into the body 1, and the position accuracy of the chuck holder 21 is improved.

[0065] In particular, the pressing part 221 is in a cylindrical shape, and the cavity 11 of the body 1 is formed with a circular groove near one end of the chuck holder 21, which is adapted to the cylindrical pressing part 221, and the one end of the chuck holder 21 abuts against the inner wall of the body 1 (see Figure 9 )

[0066] In an embodiment, as shown in Figure 9 and Figure 13 , the chuck cover 22 is provided with a protruding part 222, and the body 1 is provided with a positioning groove 14 adapted to the protruding part 222, and the positioning groove 14 accommodates the protruding part 222 to position the chuck cover 22.

[0067] Specifically, the positioning groove 14 of the body 1 is annular, and the positioning groove 14 is located on the inner wall of the cavity 11 of the body 1, and the protruding part 222 of the chuck cover 22 is also in a corresponding adapted annular boss shape, and the positioning groove 14 accommodates the annular boss-shaped protruding part 222 to position the chuck cover 22. For example, the protruding part 222 of the chuck cover 22 is exposed to the limiting groove 212 of the chuck holder 21, and the limiting groove 212 is adapted to the positioning groove 14 of the body 1, when the chuck cover 22 is located in the cavity 11 of the body 1, the protruding part 222 of the chuck cover 22 is located in the positioning groove 14 of the body 1, and the chuck cover 22 is positioned by the positioning groove 14.

[0068] In order to better understand the above-mentioned positioning groove 14 and protruding part 222, the process of loading the chuck claw assembly 2 into the cavity 11 is described in detail below.

[0069] When the chuck cover 22 presses the chuck 23 to the chuck holder 21 by the pressing part 221, the chuck claw assembly 2 is assembled, and then the chuck claw assembly 2 is loaded into the cavity 11 of the body 1 as a whole, one end of the chuck claw assembly 2 abuts against the end face of one side of the through hole 12, the protruding part 222 of the chuck cover 22 is exposed to the chuck holder 21, and the protruding part 222 on the chuck claw assembly 2 is accommodated in the positioning groove 14 of the body 1. Since one end of the chuck claw assembly 2 abuts against the end face of one side of the through hole 12, the other end of the chuck claw assembly 2 is positioned by the protruding part 222 of the chuck cover 22, thereby further improving the positioning effect of the chuck claw assembly 2 and improving the position accuracy of the chuck claw assembly 2.

[0070] In an embodiment, as shown in Figure 3 and Figure 4 The sealing holder 5 comprises a body 51 and an abutting portion 52, the body 51 is provided with a receiving groove 5A, and a limiting platform 5B is formed between the abutting portion 52 and the body 51, the first sealing ring 3 is sleeved on the abutting portion 52, and the limiting platform 5B is used for limiting the first sealing ring 3 in the direction of the connecting pipe P.

[0071] Specifically, the body 51 of the sealing holder 5 is provided with the receiving groove 5A for accommodating the second sealing ring 4, the first sealing ring 3 is sleeved on the abutting portion 52 of the sealing holder 5, the limiting platform 5B is formed between the abutting portion 52 and the body 51, and the limiting platform 5B limits the first sealing ring 3. It should be noted that a gap is provided between the abutting portion 52 and the inner wall of the cavity 11, and the size of the gap is matched with the first sealing ring 3, for example, the first sealing ring 3 is an O-shaped sealing ring, the abutting portion 52 is in a cylindrical shape, and the cylindrical abutting portion 52 is matched with the inner diameter of the first sealing ring 3, when the claw assembly 2 and the sealing holder 5 are both installed in the cavity 11 of the body 1, the end surface of the claw assembly 2 and the limiting platform 5B of the sealing holder 5 limit the first sealing ring 3 respectively, and the first sealing ring 3 seals the gap between the inner wall of the body 1 and the abutting portion 52.

[0072] In an embodiment, as shown in Figure 3 The body 51 is further provided with a groove 5C, and the groove 5C is located on the circumferential side of the body 51 and is in communication with the receiving groove 5A.

[0073] Specifically, the groove 5C of the body 51 is located on the circumferential side of the body 51, the groove 5C is in communication with the receiving groove 5A, the receiving groove 5A contains the second sealing ring 4, the abutting portion 52 of the sealing holder 5 is sleeved on the first sealing ring 3, the inner side of the sealing holder 5 is sealed by the second sealing ring 4, and the outer side of the sealing holder 5 is sealed by the first sealing ring 3. The sealing holder 5 has a central hole, the connecting pipe P is inserted into the central hole, the central hole is in communication with the receiving groove 5A, and since the receiving groove 5A contains the second sealing ring 4, the receiving groove 5A and the outer surface of the connecting pipe P are sealed by the second sealing ring 4, thereby improving the sealing effect of the pipe joint (see Figure 2 ). It should be noted that the second sealing ring 4 is located between the receiving groove 5A and the outer surface of the connecting pipe P, after the connecting pipe P is inserted into the central hole of the sealing holder 5, the connecting pipe P presses the second sealing ring 4 on the inner wall of the receiving groove 5A, thereby sealing the connecting pipe P, and then forming a “second” sealing effect on the connecting pipe P through the first sealing ring 3 and the second sealing ring 4, thereby improving the sealing effect of the pipe joint.

[0074] In particular, the body 51 is provided with two recesses 5C, which are arranged in a pair of opposite positions, and are located on the circumferential side of the accommodating groove 5A and communicate with the accommodating groove 5A. Since the second sealing ring 4 is accommodated in the accommodating groove 5A, when the second sealing ring 4 needs to be removed, the second sealing ring 4 can be conveniently taken out of the accommodating groove 5A through the recess 5C.

[0075] In order to better understand that the sealing holder 5 abuts against the clamping portion 23A and releases the clamping state of the clamping portion 23A and the connecting pipe P, the process of releasing the clamping state is specifically described below.

[0076] As shown in Figure 10 , when the clamping portion 23A of the clamping jaw assembly 2 clamps the connecting pipe P and the connecting pipe P needs to be pulled out, the existing pipe joint Q often causes the outer surface S of the connecting pipe P to be scratched (see Figure 14 ). In the pipe joint of the embodiment of the present application, the sealing holder 5 is extruded, so that when the sealing holder 5 abuts against the clamping portion 23A, the clamping state of the clamping portion 23A and the connecting pipe P is released, so that the connecting pipe P is separated from the body 1. For example, when the clamping portion 23A is the clamping jaw of the chuck 23, the clamping jaw assembly 2 clamps the connecting pipe P, the sealing holder 5 is extruded, so that the included angle of the clamping jaw is increased and the clamping jaw is opened, thereby releasing the clamping state of the clamping portion 23A and the connecting pipe P, thereby facilitating the pulling out of the connecting pipe P from the cavity 11 of the body 1.

[0077] In an embodiment, as shown in Figure 11 and 12 , the fixing assembly 6 includes a fixing member 61 and a tail plug 62, the tail plug 62 abuts against the sealing holder 5, and the fixing member 61 connects the tail plug 62 and the body 1. Specifically, the tail plug 62 located in the cavity 11 abuts against the sealing holder 5, so as to prevent the sealing holder 5 from being taken out of the cavity 11, and the fixing member 61 connects the tail plug 62 and the body 1, so as to seal the components in the body 1 in the cavity 11 and fix the tail plug 62 and the body 1 by the fixing member 61. For example, the clamping jaw assembly 2, the sealing holder 5 and the tail plug 62 are arranged in the cavity 11 in sequence, wherein part or all of the tail plug 62 is located in the cavity 11, and the fixing member 61 connects the tail plug 62 and the body 1, so as to seal the components in the body 1 in the cavity 11.

[0078] It should be noted that the fixing member 61 and the tail plug 62 can be assembled in advance to form a fixed assembly 6, which is installed as a whole at the end of the body 1 to block the jaw assembly 2, the sealing holder 5 in the cavity 11. At this time, after the connecting pipe P is inserted into the pipe joint, the clamping portion 23A clamps the connecting pipe P. When it is necessary to pull out the connecting pipe P, the sealing holder 5 is pressed from the outside of the cavity 11 to the inside of the cavity 11, so that the sealing holder 5 abuts against the clamping portion 23A of the jaw assembly 2, thereby releasing the clamping state of the clamping portion 23A and the connecting pipe P, facilitating the pulling out of the connecting pipe P from the body 1.

[0079] In an embodiment, the fixing member 61 and the tail plug 62 are both made of rubber material. When the fixing member 61 and the tail plug 62 need to be assembled into the cavity 11 of the body 1, the fixing member 61 and the tail plug 62 are both made of rubber material, which has elastic deformation capability, so that after being assembled into the cavity 11 of the body 1, the fixing member 61 and the tail plug 62 made of rubber material are blocked, thereby realizing the connection of the connecting pipe P when the pipe joint is used.

[0080] In an embodiment, the fixing member 61 is in a cylindrical shape, and the tail plug 62 is provided with a ring groove 621, and the fixing member 61 is arranged in the ring groove 621 and abuts against the protrusion of the tail plug 62 (see Figure 11 ). In particular, the end of the tail plug 62 is in a suspended state, which can be deformed better under the action of extrusion when the fixing member 61 and the tail plug 62 are assembled into the cavity 11 of the body 1, so that the tail plug 62 can be more conveniently assembled into the body 1.

[0081] In an embodiment, as shown in Figure 12 and 13 , the body 1 is provided with a limiting groove 15, and the fixing member 61 is provided with a protruding block 611 which is adapted to the limiting groove 15, and the limiting groove 15 accommodates the protruding block 611. Specifically, the opening of the cavity 11 of the body 1 is provided with the limiting groove 15, the limiting groove 15 is formed on the inner wall of the cavity 11, the limiting groove 15 is in communication with the cavity 11, and the fixing member 61 is provided with the protruding block 611 which is adapted to the limiting groove 15. For example, the limiting groove 15 is in a circular shape, and the protruding block 611 is in the form of a circular protrusion which is adapted. Since the limiting groove 15 of the body 1 accommodates the protruding block 611, the fixing member 61 limits the parts located in the cavity 11, avoiding the jaw assembly 2, the first sealing ring 3, the second sealing ring 4 and the sealing holder 5 from being pulled out of the cavity 11.

[0082] It should be noted that when the fixed assembly 6 is assembled into the body 1, the fixing member 61 and the tail plug 62 can be assembled in advance to form a whole, and the fixed assembly 6 is assembled as a whole into the cavity 11 of the body 1.

[0083] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed in this application.

Claims

1. A pipe fitting, characterized in that, include: The body has a cavity and a through hole, and the cavity and the through hole are connected. The claw assembly is provided with a locking part, which is used to lock the connecting pipe; First sealing ring; Second sealing ring; A sealing retainer includes a body and a cylindrical abutment portion. The body has a receiving groove, and a limiting platform is formed between the abutment portion and the body. A first sealing ring is fitted onto the abutment portion of the sealing retainer, sealing the gap between the inner wall of the cavity and the sealing retainer. The end face of the claw assembly and the limiting platform of the sealing retainer respectively limit the first sealing ring on opposite sides along the direction of the connecting pipe. A second sealing ring is located within the receiving groove, and the second sealing ring and the first sealing ring are located on the inner and outer sides of the sealing retainer, respectively. A fixing component abuts against the sealing retainer. The claw assembly, the sealing retainer, and the fixing component are sequentially disposed in the cavity. The sealing retainer is disposed on the side of the claw assembly away from the through hole. When the sealing retainer abuts against the snap-fit ​​part, the snap-fit ​​between the snap-fit ​​part and the connecting tube is released, so that the connecting tube is detached from the body.

2. The pipe fitting according to claim 1, characterized in that, The body is also provided with a groove, which is located on the periphery of the body and communicates with the receiving groove.

3. The pipe fitting according to claim 1, characterized in that, The gripper assembly includes: A chuck retainer, one end of which abuts against the inner wall of the body; The chuck cover is provided with a pressing part; and The chuck is provided with the locking portion, and the pressing portion abuts against the chuck to press the chuck onto the other end of the chuck holder.

4. The pipe fitting according to claim 3, characterized in that, The chuck retainer is provided with an abutting boss, and the body is provided with an abutting groove. The abutting boss and the abutting groove are engaged in a limiting abutment.

5. The pipe fitting according to claim 3, characterized in that, The chuck holder is provided with a limiting groove, the chuck is located in the limiting groove, and the pressing part abuts against the chuck to press the chuck against the inner wall of the limiting groove.

6. The pipe fitting according to claim 3, characterized in that, The chuck cover has a protrusion, and the body has a positioning groove that matches the protrusion. The positioning groove accommodates the protrusion to position the chuck cover.

7. The pipe fitting according to claim 1, characterized in that, The fixing component includes a fixing member and a tail plug, the tail plug abutting against the sealing retainer, and the fixing member connecting the tail plug to the body.

8. The pipe fitting according to claim 7, characterized in that, The main body is provided with a limiting groove, and the fixing member is provided with a protrusion that is adapted to the limiting groove, and the limiting groove accommodates the protrusion.

9. The pipe fitting according to any one of claims 1 to 8, characterized in that, The body has cavities on both sides, and the two cavities are arranged symmetrically. The through holes connect the two cavities respectively.

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