Quick-mounting pipe joint, manufacturing method, and pipe puller

Abstract

Disclosed in the present invention are a quick-mounting pipe joint, a manufacturing method, and a pipe puller, relating to the technical field of pipeline joints. The quick-mounting pipe joint comprises: a pipe body assembly, the pipe body assembly comprising a circulation pipe body, the circulation pipe body comprising at least two ports, and the ports of the circulation pipe body being provided with joint pipe bodies having a diameter greater than the diameter of the circulation pipe body; fastening assemblies located in the joint pipe bodies, the fastening assemblies comprising elastic reset units, and locking units located at the ends of the elastic reset units away from the circulation pipe body and capable of moving horizontally in the joint pipe bodies. The locking units comprise locking collars, and a plurality of locking plates arranged at intervals on annular surfaces at the sides of the locking collars away from the elastic reset units, the inner walls of the locking plates being provided with a plurality of inward-engaging teeth portions arranged in the length direction of the locking plates, and the engaging teeth of the inward-engaging teeth portions being inclined towards the locking collars. The inward-engaging teeth portions on the plurality of locking plates can engage with the outer wall of a pipeline to be connected, thereby improving pipeline connection efficiency.

Description

Quickly mounted pipe joint, manufacturing method and pipe puller TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe joints, in particular to a quickly mounted pipe joint, a manufacturing method and a pipe puller. BACKGROUND

[0002] Pipe joints are connecting tools between pipes and pipes, are connecting points between elements and pipes that can be disassembled, and play an indispensable important role in pipe connection work. The connection form of the pipe joint is mostly socket welding or threaded connection. For connection parts that need to be frequently assembled and disassembled, threaded connection is most widely used. However, the threaded joint usually needs to be turned on the pipe first, and is screwed with the threads on the threaded joint. The threaded joint needs to be turned multiple times when installing and disassembling the pipe or the threaded joint, increasing the process complexity, resulting in low installation efficiency. Especially for installation points with limited space, frequent twisting movements are extremely inconvenient and can seriously affect the installation progress.

[0003] SUMMARY

[0004] The present application provides a quickly mounted pipe joint, a manufacturing method and a pipe puller, which can solve the problems of traditional clamping and pressing connection that cannot be disassembled and slow installation of the hoop type connection in the prior art.

[0005] In a first aspect, the present application provides a quickly mounted pipe joint, comprising:

[0006] A pipe body assembly, the pipe body assembly comprising a flow-through pipe body, the flow-through pipe body comprising at least two ports, and a joint pipe body with a diameter larger than that of the flow-through pipe body being arranged on the flow-through pipe body port;

[0007] A fastening assembly located in the joint pipe body, the fastening assembly comprising an elastic return unit and a locking unit located at an end of the elastic return unit away from the flow-through pipe body and being transversely movable in the joint pipe body;

[0008] The locking unit comprises a locking sleeve and a plurality of locking plates arranged at intervals on the ring surface of the locking sleeve away from the elastic return unit, and the inner wall of the locking plate is provided with a plurality of inward clamping teeth arranged along the length direction of the locking plate, and the clamping teeth of the inward clamping teeth are inclined toward the locking sleeve.

[0009] In combination with the first aspect, in an embodiment, the end of the joint pipe body away from the flow-through pipe body is provided with a tightening port, and the diameter of the tightening port gradually decreases from inside to outside.

[0010] In an embodiment, the locking unit is located at the tightening port, and the locking plate is obliquely arranged to be in contact with the inner wall of the tightening port.

[0011] In an embodiment, a plurality of the inward clamping portions are symmetrically arranged on both sides of the inner wall of the locking plate, and the clamping portions gradually decrease in length from inside to outside.

[0012] In an embodiment, the elastic reset unit comprises a reset spring and a spring compression ring located on the side of the reset spring close to the flow pipe, and the spring compression ring is connected to the inner wall of the joint pipe.

[0013] In an embodiment, the locking ring is sleeved in the spring compression ring.

[0014] In an embodiment, the joint pipe is internally provided with a sealing unit located on the side of the elastic reset unit close to the flow pipe.

[0015] In an embodiment, the sealing unit comprises a plurality of sealing rings arranged at intervals, and a sealing ring compression ring is arranged between each two adjacent sealing rings.

[0016] In a second aspect, the embodiments of the present application provide a manufacturing method for manufacturing the quick-mounting pipe joint, which comprises the following steps:

[0017] The finished product pipe is cut into a pipe segment of a certain length, and the pipe segment is placed into an internal expansion forming machine to form the flow pipe and the joint pipe;

[0018] The sealing unit, the elastic reset unit and the locking unit are sequentially placed in the joint pipe, and a top rod is used to compress the locking unit to make the elastic reset unit shrink;

[0019] A necking die is used to form a certain taper at the pipe end of the joint pipe, and the top rod is withdrawn;

[0020] A port forming die is used to form the port of the joint pipe.

[0021] In a third aspect, the embodiments of the present application provide a pipe extractor for extracting the quick-mounting pipe joint, which comprises two arc-shaped sleeve pieces, each of which is provided with an arc-shaped sheet on one side and the arc surface of the arc-shaped sheet is consistent with the arc surface of the arc-shaped sleeve piece, the two arc-shaped sleeve pieces are detachably connected to form a ring, and the two arc-shaped sheets form a cylinder to be in contact with the outer pipe wall of the pipe to be connected.

[0022] The technical scheme provided by the embodiments of the present application has the following beneficial effects:

[0023] By setting the locking sleeve ring in the joint pipe body, and setting multiple locking plates on the locking sleeve ring, the inward clamping tooth part on the locking plate can tightly clamp the outer circumferential wall of the pipe to be connected during the pipe splicing process, preventing the pipe to be connected from falling off, compared with the traditional threaded connection mode, simplifying the splicing process and improving the pipe splicing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0025] Fig. 1 is a front view of a quick-mounting pipe joint provided by an embodiment of the present application;

[0026] Fig. 2 is a schematic diagram of an embodiment of a flow-through pipe body in a quick-mounting pipe joint provided by an embodiment of the present application;

[0027] Fig. 3 is a schematic diagram of the structure when the flow-through pipe body in a quick-mounting pipe joint provided by an embodiment of the present application is a bend pipe;

[0028] Fig. 4 is a schematic diagram of the structure of a valve in a quick-mounting pipe joint provided by an embodiment of the present application;

[0029] Fig. 5 is a cross-sectional view of a quick-mounting pipe joint provided by an embodiment of the present application;

[0030] Fig. 6 is a schematic diagram of the structure of a locking unit in a quick-mounting pipe joint provided by an embodiment of the present application;

[0031] Fig. 7 is a schematic diagram of the structure of a reset spring and a spring compression ring in a quick-mounting pipe joint provided by an embodiment of the present application;

[0032] Fig. 8 is a schematic diagram of the connection mode of a reset spring and a locking sleeve ring in a quick-mounting pipe joint provided by an embodiment of the present application;

[0033] Fig. 9 is a schematic diagram of the structure of a sealing unit in a quick-mounting pipe joint provided by an embodiment of the present application;

[0034] Fig. 10 is a schematic diagram of a manufacturing method provided by the present application;

[0035] Fig. 11 is a schematic diagram of the structure of a pipe extractor provided by an embodiment of the present application.

[0036] In the figure: 1, flow pipe body; 101, valve; 2, joint pipe body; 201, tightening port; 3, elastic reset unit; 301, reset spring; 302, spring compression ring; 3021, bearing ring; 3022, fixed ring; 4, locking unit; 401, locking sleeve; 402, locking plate; 403, inward clamping teeth; 5, sealing unit; 501, sealing ring; 502, sealing ring compression ring; 503, sealing ring blocking ring; 6, dustproof ring; 7, arc sleeve piece; 8, arc thin plate. DETAILED DESCRIPTION

[0037] In order to enable personnel in the technical field to better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0038] The embodiments of the present application provide a quick-mounting pipe joint and a pipe puller, which can solve the problems of the traditional clamping and pressing connection and the slow installation of the hoop connection in the prior art.

[0039] In a first aspect, the embodiments of the present application provide a quick-mounting pipe joint, which comprises a pipe body assembly and a fastening assembly. The pipe body assembly is integrally through, and is mainly used for connecting to be connected pipes respectively. The fastening assembly is arranged in the pipe body assembly, and can replace the threaded connection mode in the traditional technology to stably fix the to-be-connected pipes to the pipe body assembly.

[0040] Specifically, FIG. 1 is a front view of a quick-mounting pipe joint provided by the embodiments of the present application. As shown in FIG. 1, the pipe body assembly comprises a flow pipe body 1. The flow pipe body 1 comprises at least two ports. The port of the flow pipe body 1 is provided with a joint pipe body 2 with a diameter larger than that of the flow pipe body 1. In actual use, the shape of the flow pipe body 1 can be various. FIG. 2 is a schematic view of one embodiment of the flow pipe body 1 in the quick-mounting pipe joint provided by the embodiments of the present application. FIG. 3 is a structural schematic view of the flow pipe body 1 as a bent pipe in the quick-mounting pipe joint provided by the embodiments of the present application. As shown in FIGS. 2 and 3, in combination with the actual installation condition, the number of ports of the flow pipe body 1 is generally two or three. Each port of the flow pipe body 1 is provided with a joint pipe body 2. Meanwhile, the flow pipe body 1 can be a straight straight pipe or a bent pipe with a certain included angle. The included angle can be 45° or 90°, which is not specifically limited in the present application. The inner diameter of the port of the flow pipe body 1 is slightly smaller than the inner diameter of the joint pipe body 2. The butt joint ends of a plurality of to-be-connected pipes can pass through the joint pipe body 2 and then enter the flow pipe body 1 to be connected to the flow pipe body 1 to form a passage.

[0041] Further, as an optional embodiment, when the port of the flow pipe body 1 is two, a valve 101 is arranged on the pipe body of the flow pipe body 1, which can facilitate the later maintenance and repair, and FIG. 4 is a structure diagram of the valve 101 in a quick-mounting pipe joint provided by the embodiment of the application. The valve 101 is a commonly used component, and will not be described in detail here.

[0042] Further, the fastening assembly in each quick-mounting pipe joint in the application is multiple groups, and each port of the joint pipe body 2 is provided with a group of fastening assemblies, and FIG. 5 is a cross-sectional view of a quick-mounting pipe joint provided by the embodiment of the application. As shown in FIG. 5, the fastening assembly includes an elastic reset unit 3 and a locking unit 4 located at the end of the elastic reset unit 3 away from the flow pipe body 1 and can move transversely in the joint pipe body 2.

[0043] The elastic reset unit 3 and the locking unit 4 are arranged in sequence from inside to outside. It should be noted that the “inside” in the text refers to the direction close to the flow pipe body 1, and the “outside” refers to the direction close to the joint pipe body 2, which will not be repeated here. When connecting the pipe, the butt joint end of the connected pipe is first locked with the locking unit 4. Due to the inward pushing force applied to the connected pipe, the connected pipe will drive the locking unit 4 to displace a certain distance towards the flow pipe body 1 and press the elastic reset unit 3. After the connected pipe continues to penetrate and is connected to the flow pipe body 1, the connected pipe is loosened to make the inward pushing force of the connected pipe disappear. The automatic reset property of the elastic reset unit 3 can push the locking unit 4 back to the original position, and thus the pipe connection work is completed.

[0044] Further, FIG. 6 is a structure diagram of the locking unit 4 in a quick-mounting pipe joint provided by the embodiment of the application. As shown in FIG. 6, the locking unit 4 includes a locking sleeve 401 and a plurality of locking plates 402 arranged at intervals on the ring surface of the locking sleeve 401 away from the elastic reset unit 3. The inner wall of the locking plate 402 is provided with a plurality of inward clamping teeth 403 arranged along the length direction of the locking plate 402. The clamping teeth of the inward clamping teeth 403 are inclined towards the locking sleeve 401.

[0045] The end of the joint pipe body 2 away from the flow pipe body 1 is provided with a tightening port 201, and the locking unit 4 is located at the tightening port 201. The tightening port 201 can prevent the locking unit 4 from falling out of the joint pipe body 2. In addition, the diameter of the tightening port 201 gradually decreases from inside to outside. In order to make the plurality of locking plates 402 closely fit the inner wall of the tightening port 201, prevent the locking unit 4 from rotating in the joint pipe body 2, the shape of the locking plate 402 is consistent with the shape of the inner wall of the tightening port 201, that is, the plurality of locking plates 402 are all inclined, and the outer wall of the locking plate 402 is consistent with the inclination angle of the inner wall of the tightening port 201. The inclination of the inward clamping teeth 403 can make the pipe to be connected enter the flow pipe body 1 in one direction only, preventing the pipe to be connected from coming out.

[0046] Further, the plurality of inward clamping teeth 403 are symmetrically arranged on the inner wall of the locking plate 402, that is, a plurality of inward clamping teeth 403 arranged along the length direction of the locking plate 402 form a group. For convenience of description, a plurality of inward clamping teeth 403 arranged along the length direction of the locking plate 402 are referred to as a group of clamping teeth. Each locking plate 402 is provided with two groups of clamping teeth, and the two groups of clamping teeth are arranged along the width direction of the locking plate 402. As an optional embodiment, in order to reduce the weight of the material, a hollow slot is arranged between the two groups of clamping teeth on the locking plate 402. The end of the hollow slot away from the locking collar 401 is sealed, and the other end of the hollow slot is open and extends to the locking collar 401.

[0047] Further, the clamping teeth of the inward clamping teeth 403 gradually decrease from inside to outside. As described above, in order to fit the inclination of the tightening port 201, the locking plate 402 is also inclined. Therefore, in order to make the inward clamping teeth 403 closely fit the pipe wall to be connected, the clamping teeth of the inward clamping teeth 403 away from the locking collar 401 are smaller. In the completed assembly condition, the clamping teeth of the plurality of inward clamping teeth 403 are located on the same horizontal plane.

[0048] Further, in order to ensure uniform locking, the locking plate 402 is arranged in multiple groups, and the multiple groups of locking plates 402 are equally arranged along the side surface of the locking collar 401 away from the elastic reset unit 3. After assembly, the multiple groups of locking plates 402 cooperate with each other to lock the outer circumferential wall of the pipe to be connected, which can improve the connection stability of the pipe to be connected and the quick-mounting pipe joint in the application.

[0049] Further, as an optional embodiment, a dustproof ring 6 is arranged at the tightening port 201, and the fixation of the to-be-connected pipeline mainly relies on the inward clamping part 403 in the locking sleeve 401, therefore, the inner diameter of the tightening port 201 is larger than the outer diameter of the to-be-connected pipeline, and after the assembly is completed, there is a certain gap between the inner circumferential wall of the tightening port 201 and the outer circumferential wall of the to-be-connected pipeline, and the dustproof ring 6 is arranged at the gap between the inner circumferential wall of the tightening port 201 and the outer circumferential wall of the to-be-connected pipeline, which can prevent dust and other impurities from entering, and at the same time, the dustproof ring 6 can also play a certain sealing role.

[0050] Further, the elastic reset unit 3 includes a reset spring 301 and a spring compression ring 302 located at the side of the reset spring 301 close to the flow-through pipe body 1, and the spring compression ring 302 is connected to the inner wall of the joint pipe body 2, when the to-be-connected pipeline passes through the locking unit 4, the to-be-connected pipeline is locked with the locking plate 402 in the locking unit 4, and when the to-be-connected pipeline is continuously pushed inward, the locking unit 4 is driven to translate towards the reset spring 301, the spring compression ring 302 is located at the end of the reset spring 301 away from the locking sleeve 401 and is fixedly connected to the inner wall of the joint pipe body 2, which can fix the reset spring 301 and play a counterforce role, and after the to-be-connected pipeline enters the flow-through pipe body 1 and is combined with the flow-through pipe body 1, the inward pushing force is removed, and the automatic reset property of the reset spring 301 pushes the locking unit 4 to displace outward to make the locking unit 4 return to the initial position.

[0051] Further, Fig. 7 is a structure diagram of the reset spring 301 and the spring compression ring 302 in the quick-mounting pipe joint provided in the embodiment of the application, as shown in the figure, the spring compression ring 302 includes a bearing ring 3021 for bearing the inner wall of the joint pipe body 2 and a fixed ring 3022 for entering the ring body of the reset spring 301, the outer circumferential wall of the bearing ring 3021 is fixedly positioned with the inner circumferential wall of the joint pipe body 2 to fix the position of the reset spring 301, the fixed ring 3022 is located at the side of the bearing ring 3021 towards the reset spring 301 and is integrated with the fixed ring 3022, the fixed ring 3022 enters the ring body of the reset spring 301 and is clamped with the ring body of the reset spring 301, which prevents the relative displacement between the reset spring 301 and the spring compression ring 302 caused by the compression force of the to-be-connected pipeline during the pipeline connection work, and affects the connection stability of the pipeline.

[0052] Further, Fig. 8 is a connection mode diagram of the reset spring 301 and the locking sleeve 401 in the quick-mounting pipe joint provided in the embodiment of the application, as shown in Fig. 8, the locking sleeve 401 is sleeved in the spring compression ring 302, based on this structure, the connection stability between the locking unit 4 and the spring compression ring 302 can be ensured, and the relative displacement between the reset spring 301 and the locking unit 4 caused by the compression force of the to-be-connected pipeline is prevented.

[0053] Further, the sealing unit 5 is arranged in the joint pipe body 2 and located close to one end of the flow pipe body 1. As an optional embodiment, FIG. 9 is a structural schematic view of the sealing unit 5 in the quick-mounting pipe joint provided in the embodiment of the application. As shown in FIG. 9, the sealing unit 5 in the embodiment of the application comprises a plurality of sealing rings 501 arranged at intervals, and a sealing ring pressing ring 502 is arranged between each two adjacent sealing rings 501. The sealing ring pressing ring 502 is used to fix the position of the sealing ring 501 and prevent the displacement of the sealing ring 501. As an optional embodiment, the sealing ring 501 in the embodiment of the application is preferably made of rubber material, has excellent weather resistance, can resist atmospheric aging, and ensures stable long-term use performance. Further, the sealing ring 501 is also provided with a sealing ring stop ring 503 located at the innermost side of the joint pipe body 2, which is also a limiting piece of the sealing ring 501.

[0054] The quick-mounting pipe joint in the embodiment of the application is used as follows. A suitable joint pipe body 2 is selected according to the diameter of the pipe to be connected, and then the butt joint end of the pipe to be connected is inserted into the locking collar 401 and pushed inward. At this time, the inward clamping teeth 403 of the locking plate 402 lock the outer circumferential wall of the pipe to be connected. In the process of continuously deepening the pipe to be connected, the locking unit 4 will displace along with the pipe to be connected and press the return spring 301. Finally, the spring compression ring 302 stops the movement. At this time, the worker continues to push the pipe to be connected. The pushing force applied to the pipe to be connected will overcome the locking force between the pipe to be connected and the locking unit 4, so that the pipe to be connected and the locking unit 4 relatively displace and continue to deepen until the butt joint end of the pipe to be connected passes through the sealing unit 5 and is engaged in the flow pipe body 1. Finally, the elastic potential energy of the return spring 301 pushes the locking unit 4 to the home position. Thus, the assembly is completed.

[0055] The quick-mounting pipe joint in the embodiment of the application is used as follows. A suitable joint pipe body 2 is selected according to the diameter of the pipe to be connected, and then the butt joint end of the pipe to be connected is inserted into the locking collar 401 and pushed inward. At this time, the inward clamping teeth 403 of the locking plate 402 lock the outer circumferential wall of the pipe to be connected. In the process of continuously deepening the pipe to be connected, the locking unit 4 will displace along with the pipe to be connected and press the return spring 301. Finally, the spring compression ring 302 stops the movement. At this time, the worker continues to push the pipe to be connected. The pushing force applied to the pipe to be connected will overcome the locking force between the pipe to be connected and the locking unit 4, so that the pipe to be connected and the locking unit 4 relatively displace and continue to deepen until the butt joint end of the pipe to be connected passes through the sealing unit 5 and is engaged in the flow pipe body 1. Finally, the elastic potential energy of the return spring 301 pushes the locking unit 4 to the home position. Thus, the assembly is completed.

[0056] In a second aspect, the embodiment of the application further provides a manufacturing method for manufacturing the above-mentioned quick-mounting pipe joint. Specifically, FIG. 10 is a flowchart of the manufacturing method provided in the embodiment of the application. As shown in FIG. 10, the manufacturing method in the embodiment of the application comprises the following steps:

[0057] S1: The finished product pipe is cut to a certain length to form a pipe segment, and the pipe segment is placed into an internal expansion forming machine to form the flow pipe body 1 and the joint pipe body 2.

[0058] The finished product is discharged to a certain length to form a pipe segment, the port of the pipe segment is deburred, and then the pipe segment is placed in a hydraulic forming, the upper and lower molds are locked, and high-pressure liquid is injected to form the pipe body 1 and the joint pipe body 2. After preliminary forming, heat treatment is required to remove stress, and then ultrasonic cleaning and drying are performed.

[0059] S2: The sealing unit 5, the elastic return unit 3 and the locking unit 4 are placed in the joint pipe body 2 in sequence, and the locking unit 4 is pressed by the ejector rod to make the elastic return unit 3 contract;

[0060] The locking sleeve 401 and the locking plate 402 are pre-assembled, then the sealing ring 501, the first sealing ring 501, the sealing ring pressing ring 501, the second sealing ring 501, the elastic return unit 3 and the locking unit 4 are sequentially placed in the joint pipe body 2 according to the structure sequence of the sealing unit 5, and then the outer end of the locking sleeve 401 is pressed by the ejector rod to make the elastic return unit 3 contract. It should be noted that the sealing unit 5 can be additionally provided with a sealing device according to actual use, and the above-mentioned components are only used as an example.

[0061] S3: A necking die is used to form a certain taper at the pipe end of the joint pipe body 2, and the ejector rod is withdrawn;

[0062] The necking die is a special necking machine, the outer end of the locking sleeve 401 is pressed to be below the necking position of the port of the joint pipe body 2, then the necking work of the port of the joint pipe body 2 is performed, the ejector rod is withdrawn after the necking is completed, and the elastic return unit 3 drives the locking sleeve 401 to return to the original position;

[0063] S4: The port of the joint pipe body 2 is formed using a port forming die, and the port of the joint pipe body 2 is formed into a final forming shape using a matched port forming die. The inner diameter of the port of the joint pipe body 2 after forming is smaller than the minimum outer diameter of the locking unit 4, and finally the ports of other joint pipe bodies 2 are assembled and formed according to the above-mentioned method.

[0064] In a third aspect, the embodiments of the present application also provide a pipe extractor for quickly disconnecting the pipe of the quick-mounting pipe joint.

[0065] Specifically, FIG. 11 is a structural schematic diagram of a pipe extractor provided by the embodiments of the present application. As shown in FIG. 11, the pipe extractor in the embodiments of the present application includes two arc-shaped sleeve pieces 7, one side of each arc-shaped sleeve piece 7 is provided with an arc-shaped thin plate 8 with the same arc surface direction as the arc-shaped sleeve piece 7, the two arc-shaped sleeve pieces 7 are detachably connected to form a ring, and the two arc-shaped thin plates 8 form a cylinder for fitting the outer pipe wall of the pipe to be connected.

[0066] The two arc-shaped sheets 8 are detachably connected to form a ring, used for sleeving on the pipe body in the quick-assembly pipe joint, the arc surface of the arc-shaped sheet 8 is consistent with the arc surface of the arc-shaped sleeve sheet 7, the inner diameter of the cylinder formed by the two arc-shaped sheets 8 is slightly larger than the outer diameter of the pipe to be connected, after assembly, the inner wall of the cylinder is attached to the outer wall of the pipe to be connected, and the puller can move on the pipe to be connected. In an embodiment of the application, one end of the two arc-shaped sleeve sheets 7 is rotatably connected, and the other end of the two arc-shaped sleeve sheets 7 is detachably connected.

[0067] When the pipe is pulled out, the puller is slid, the cylinder formed by the two arc-shaped sheets 8 in the puller enters from the gap between the inner circumferential wall of the tightening port 201 of the joint pipe body 2 and the outer circumferential wall of the pipe to be connected, and then the puller is continuously pushed in, because the inward clamping teeth 403 are inclined towards the locking ring 401, the cylinder can continue to extend into the space between the inward clamping teeth 403 and the pipe wall of the pipe to be connected, until the locking between the inward clamping teeth 403 and the pipe to be connected is loosened, because the inner wall of the cylinder is smooth, the pipe body can be directly pulled out.

[0068] In the description of the application, it should be noted that the terms "upper", "lower", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the 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 application. Unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0069] It has to be noted that, in the present application, the terms "first", "second", etc. are used merely to distinguish one entity or action from another entity or action, without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0070] The foregoing detailed description has set forth various embodiments of the application via the use of specific terminology. However, embodiments thereof can be practiced without the specific details ("every" embodiment) set forth above. In general, the terms used are intended to be illustrative and not restrictive, and are used in conjunction with specific embodiments to assist in understanding the present application. The terms "comprises", "comprising", or any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus. The terms "first", "second", and the like, do not denote any order, quantity, or importance, but rather are used to identify one element from another. The terms "a" and "an" and "the" and "at least one" and "one or more" are used interchangeably. The terms "plurality" and "a plurality" mean two or more. The term "another" means at least a second or more.

Claims

1. A quick-fit pipe joint, characterized in that The utility model relates to a pipe body assembly, the pipe body assembly includes flow pipe body (1), the flow pipe body (1) includes at least two ports, the flow pipe body (1) port is equipped with the joint pipe body (2) of the diameter greater than the diameter of flow pipe body (1), the fastening assembly in joint pipe body (2), the fastening assembly includes elastic reset unit (3) and the locking unit (4) located the elastic reset unit (3) far from the flow pipe body (1) one end and can move in the lateral direction in joint pipe body (2), wherein, the locking unit (4) includes locking collar (401) and multiple locking plates (402) are arranged on the ring surface of locking collar (401) far from the elastic reset unit (3) one side, the inner wall of locking plate (402) is equipped with multiple inward clamping tooth parts (403) along the length direction of locking plate (402), and the clamping tooth of inward clamping tooth part (403) inclines to the direction of locking collar (401). The end of the joint pipe body (2) away from the flow pipe body (1) is provided with a tightening port (201), and the diameter of the tightening port (201) gradually decreases from inside to outside. The locking unit (4) is located at the tightening port (201), and the locking plate (402) is inclined to fit the inner wall of the tightening port (201). Multiple inward clamping tooth parts (403) are symmetrically arranged on the inner wall of the locking plate (402), and the extension length of the clamping tooth of the inward clamping tooth part (403) gradually decreases from inside to outside.

2. A quick fitting pipe joint as claimed in claim 1, wherein, The elastic reset unit (3) includes a reset spring (301) and a spring compression ring (302) located on the side of the reset spring (301) close to the flow pipe body (1), and the spring compression ring (302) is connected to the inner wall of the joint pipe body (2).

3. A quick fitting pipe joint as claimed in claim 2, wherein, The locking collar (401) is sleeved in the spring compression ring (302).

4. A quick fitting pipe joint as claimed in claim 3, wherein, The joint pipe body (2) is provided with a sealing unit (5) located at the end of the elastic reset unit (3) close to the flow pipe body (1).

5. A quick fitting pipe joint as claimed in claim 1, wherein, The sealing unit (5) includes a plurality of spaced sealing rings (501), and a sealing ring compression ring (502) is arranged between each adjacent two sealing rings (501).

6. A quick fitting pipe joint as claimed in claim 5, wherein, The following steps are included:

7. A quick fitting pipe joint as claimed in claim 1, wherein, Cut the finished pipe to a certain length to form a pipe segment, and place the pipe segment into an internal expansion forming machine to form a flow pipe body (1) and a joint pipe body (2); 8. A quick fitting pipe joint as claimed in claim 7, wherein, Place the sealing unit (5), the elastic reset unit (3) and the locking unit (4) in the joint pipe body (2) in sequence, and use a ejector rod to compress the locking unit (4) to make the elastic reset unit (3) shrink; 9. A manufacturing method for manufacturing the quick-mounting pipe joint according to any one of claims 1 to 8, characterized by, Use a necking die to form a certain taper at the pipe end of the joint pipe body (2), and withdraw the ejector rod; Use a port forming die to form the port of the joint pipe body (2). ​ ​ ​ 10. A tube puller for use in removing a tube from a quick-fit tube joint according to any one of claims 1 to 8, characterised in that, The tube puller comprises two arc-shaped sleeve pieces (7), each of which is provided with an arc-shaped thin plate (8) on one side, the arc faces of the arc-shaped sleeve pieces (7) and the arc-shaped thin plates (8) are consistent, the two arc-shaped sleeve pieces (7) are detachably connected to form a ring, and the two arc-shaped thin plates (8) form a cylinder for adhering to the outer wall of the pipeline to be connected.

Images