A quick-connect pipe joint

Abstract

The present invention is applicable to the technical field of pipeline connection, and provides a quick-connect pipeline joint, including a connecting piece, a clamping piece, a first force-applying piece and a second force-applying piece; the connecting piece includes a first connecting end and a second connecting end, the end of the second connecting end is provided with an inwardly concave connecting ring, the outside of the first connecting end is provided with a second force-applying piece, and both sides of the second force-applying piece are provided with a second fastening hole; the clamping piece includes a conical section and an annular section, the conical section is connected to the first force-applying piece, the annular section is plugged into the connecting ring, and the clamping piece is also provided with a bayonet; the first force-applying piece is provided with a clamping hole, the clamping hole is sleeved with the conical section, both ends of the first force-applying piece are provided with a first fastening hole, and fasteners are inserted into the first fastening hole and the second fastening hole on the same side. By this, the present invention can quickly realize the connection of pipelines, the connection is more convenient, and the stability and sealing performance after connection are good.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, in particular to a quick-connect pipeline joint. Background Art

[0002] Pipes are widely used in industrial pipelines and mechanical structural components such as petroleum, chemical, medical, light industry, and mechanical instruments. In practical applications, there are many ways to connect pipes, among which welding and compression are the most widely used.

[0003] The welding method is to insert the pipe into the socket of the pipe joint and then weld the joint. This method requires a certain welding process and has high requirements for workers and equipment. In addition, the high temperature generated during welding will change the material properties of the heated part, thereby affecting the strength of the connection.

[0004] The compression fittings use special hydraulic tools and can be connected by compression. They are convenient and quick to connect, suitable for embedded installation, and relatively economical. However, their connection strength is low, and the interface connection strength is less than 1 / 3 of the pipe body strength. Water leakage is prone to occur when the burrs and flash on the ports are not cleaned up. In addition, the compression pipe connection cannot be disassembled, so professionals are required to replace the pipe fittings and joints, which makes maintenance difficult.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] In view of the above-mentioned defects, the object of the present invention is to provide a quick-connect pipe joint, which can quickly connect pipes, is more convenient to connect, and has better stability and sealing after connection.

[0007] In order to achieve the above-mentioned object, the present invention provides a quick-connect pipe joint, comprising a connecting member, a clamping member, a first force-applying member and a second force-applying member.

[0008] The connecting member includes a first connecting end and a second connecting end, and an end portion of the second connecting end is provided with an inwardly concave connecting ring; a second force applying member is provided outside the first connecting end, and second fastening holes are provided on both sides of the second force applying member.

[0009] The clamping member comprises a conical section and a circular ring section, the conical section is connected to the first force applying member, and the circular ring section is plugged into the connecting ring; the clamping member is also provided with a bayonet.

[0010] The first force-applying member is provided with a clamping hole with a conical interior, the clamping hole is sleeved with the conical section, and the inner diameter of the thick-diameter end of the clamping hole is smaller than the inner diameter of the thick-diameter end of the conical section; the first force-applying member is provided with a first fastening hole at both ends, and fasteners are inserted through the first fastening hole and the second fastening hole located on the same side.

[0011] According to the quick-connect pipe joint of the present invention, the length of the circular ring segment is not less than the length of the connecting ring.

[0012] According to the quick-connect pipe joint of the present invention, the taper angle of the compression hole is the same as the taper angle of the tapered section.

[0013] According to the quick-connect pipe joint of the present invention, an internal thread is provided inside the first connection end.

[0014] According to the quick-connect pipe connector of the present invention, a protruding separation ring is further provided inside the connecting piece, and the two ends of the separation ring respectively form the first connecting end and the second connecting end; the connecting rings are respectively provided on the inner sides of the ends of the first connecting end and the second connecting end, and the two connecting rings are both connected to the circular ring section of the clamping piece, and the conical sections of the two clamping pieces are both sleeved on the clamping hole of the first force-applying piece, and the fasteners are inserted into the first fastening holes of the two first force-applying pieces located on the same side.

[0015] According to the quick-connect pipe joint of the present invention, the separation ring is arranged in the middle of the interior of the connecting piece, and the connecting piece forms a symmetrical structure through the separation ring.

[0016] According to the quick-connect pipe joint of the present invention, a portion of the interior of the connector between the separation ring and the connection ring is provided with a plurality of sealing rings.

[0017] According to the quick-connect pipe joint of the present invention, the sealing ring is provided with at least two rings and is evenly distributed on both sides of the separation ring.

[0018] According to the quick-connect pipe joint of the present invention, a plurality of circles of thorns are arranged inside the tapered section.

[0019] According to the quick-connect pipe joint of the present invention, the tips of the plurality of circles of thorns are located on the same vertical line.

[0020] The object of the present invention is to provide a quick-connect pipe joint, by setting a connecting piece, the connecting piece includes a first connecting end and a second connecting end, the first connecting end and the second connecting end are used to connect different pipes at both ends; the end of the second connecting end is provided with an inwardly concave connecting ring, the connecting ring is connected to a clamping piece, and the clamping piece is used to clamp and fix the pipe to prevent the pipe from being dislodged due to the reaction force of water pressure; the outside of the first connecting end is provided with a second force-applying piece, the clamping piece is sleeved with the first force-applying piece, and fasteners are inserted into the first force-applying piece and the second force-applying piece, and the first force-applying piece and the second force-applying piece are locked by the fastener, and the clamping piece is clamped in the connecting piece at the same time, and the locking method of the fastener is convenient and labor-saving, construction time is saved, and work efficiency is improved; at the same time, it is not easy to loosen, and the stability of the pipe connection is guaranteed. In summary, the beneficial effects of the present invention are: it can quickly realize the connection of the pipe, the connection is relatively convenient, and the stability and sealing after the connection are good. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the longitudinal section structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of the clamping member of the present invention;

[0024] Figure 4 It is a schematic diagram of the longitudinal section structure of the clamping member;

[0025] Figure 5 It is a schematic structural diagram of an embodiment of the present invention;

[0026] Figure 6 It is a schematic structural diagram of an embodiment of the present invention;

[0027] Figure 7 It is a schematic structural diagram of an embodiment of the present invention;

[0028] In the figure: 1-connecting piece, 11-first connecting end, 12-second connecting end, 13-sealing ring, 14-connecting ring, 15-separating ring; 2-clamping piece, 21-conical section, 211-thorn; 22-circular section, 23-bayonet; 3-first force-applying piece, 31-pressing hole, 32-first fastening hole, 33-fastener, 4-pipeline, 5-second force-applying piece, 51-second fastening hole. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0030] See also Figure 1 and Figure 2 The present invention provides a quick-connect pipe joint, including a connector 1 for plugging a pipe 4, a clamping member 2 for clamping the pipe 4, and a first force-applying member 3 and a second force-applying member 5 for compressing the clamping member 2.

[0031] The connector 1 includes a first connecting end 11 and a second connecting end 12. The end of the second connecting end 12 is provided with an inwardly concave connecting ring 14, and the connecting ring 14 is used to connect the clamping member 2. The second connecting end 12 is also provided with a plurality of sealing rings 13. In the present invention, the sealing ring 13 is provided with at least two circles. The outside of the first connecting end 11 is provided with a second force-applying member 5, and the second force-applying member 5 can be fixedly connected to the outside of the first connecting end 11, or can be designed as an integral molding. Both sides of the second force-applying member 5 are provided with second fastening holes 51; the first connecting end 11 is used to connect other connectors, and the other connectors can be another section of the pipeline 4, or can be an intermediate connector pre-connected with other pipelines 4, such as a two-way joint, a three-way joint, and an elbow connector.

[0032] See also Figure 3 and Figure 4 The clamping member 2 includes a conical section 21 and a circular section 22. In the present invention, the conical section 21 and the circular section 22 are an integrally formed structure. The conical section 21 is used to connect the first force member 3, and the circular section 22 is inserted into the connecting ring 14 of the connecting member 1. The length of the circular section 22 is not less than the length of the connecting ring 14. The clamping member 2 is also provided with a bayonet 23. When the clamping member 2 is clamped to the pipe 4 by force, the bayonet 23 is closed. When the clamping member 2 releases the pipe 4, the bayonet 23 is opened. The setting of the bayonet 23 enables the inner diameter of the clamping member 2 to change. The bayonet 23 has a certain width. When the clamping member 2 is not subjected to force (initial state), the inner diameter of the thin-diameter end of the conical section 21 is slightly larger than the outer diameter of the pipe 4. When the clamping member 2 is subjected to force, the bayonet 23 is closed, and the inner diameter of the thin-diameter end of the conical section 21 is slightly smaller than the outer diameter of the pipe 4, so as to ensure that the clamping member 2 can clamp the pipe 4.

[0033] The first force-applying member 3 is provided with a clamping hole 31 with a tapered interior. The clamping hole 31 is sleeved downwardly from the thin-diameter end of the tapered section 21. The tapered angle of the clamping hole 31 is the same as the tapered angle of the tapered section 21. The inner diameter of the thick-diameter end of the clamping hole 31 is smaller than the inner diameter of the thick-diameter end of the tapered section 21, so that a certain reserved gap is provided between the bottom of the first force-applying member 3 and the end of the second connecting end 12 in the initial state. When the first force-applying member 3 is subjected to force, it can approach the second connecting end 12 and generate an extrusion force on the clamping member 2 to close the bayonet 23. In order to better ensure the existence of the above-mentioned reserved gap, the length of the annular segment 22 of the clamping member 2 is greater than the length of the connecting ring 14, so that the annular segment 22 grows out of the second connecting end 12, and the first force-applying member 3 has sufficient space to approach the second connecting end 12 and squeeze the clamping member 2. Both ends of the first force applying member 3 are provided with first fastening holes 32, and fasteners 33 are inserted through the first fastening holes 32 and the second fastening holes 51 on the same side. In the present invention, the fasteners 33 are bolts.

[0034] During use, the second connection end 12 of the connector 1, the clamping member 2 and the first force member 3 are in the following state: the second connection end 12 is plugged into the clamping member 2, the first force member 3 is sleeved on the clamping member 2, and the fasteners 33 are inserted into the first fastening holes 32 and the second fastening holes 51 on the same side; the pipe 4 to be connected is inserted into the compression hole 31 of the first force member 3, the tapered section 21 of the clamping member 2 and the second connection end 12 of the connector 1 in sequence, and then the first force member 3 and the second force member 5 are locked by the fastener 33, so that the first force member 3 is close to the second connection end 12 and squeezes the clamping member 2; see Figure 2 The first force-applying member 3 will press the clamping member 2 downward. As the first force-applying member 3 moves downward, the clamping hole 31 makes the inner diameter of the clamping member 2 smaller, and the bayonet 23 tends to close, clamping the pipe 4 in the conical section 21. At the same time, since the first force-applying member 3 and the second force-applying member 5 are locked by the fastener 33, the annular section 22 of the clamping member 2 is also clamped in the connecting ring 14 of the second connecting end 12.

[0035] According to the present invention, the clamping of the clamping member 2 in the connecting ring 14 and the closing of the bayonet 23 of the clamping member 2 and the clamping on the pipe 4 are all achieved through the first force member 3 and the second force member 5. The fastener 33 locks the first force member 3 and the second force member 5, forcing the clamping hole 31 to press the clamping member 2. This process is achieved by twisting the fastener 33. The twisting of the fastener 33 is relatively convenient and labor-saving, which saves construction time and improves work efficiency during the pipe connection process. At the same time, after the fastener 33 locks the first force member 3 and the second force member 5 in place, the fastener 33 is not easy to loosen, thereby ensuring the stability of the pipe connection.

[0036] See also Figure 3 and Figure 4As a preferred solution, the interior of the conical section 21 is provided with a plurality of circles of thorns 211, which are irregularly spiral in the circumferential direction. In the present invention, at least three circles of thorns 211 are provided, and the tips of the plurality of circles of thorns 211 are located on the same vertical line c. When the pipe 4 is inserted into the clamping member 2 and the inner diameter of the clamping member 2 is reduced under force, each circle of thorns 211 can contact the outer wall of the pipe 4. When water flows through the pipe 4, the pipe 4 is subjected to an outward reaction force due to the water pressure. At this time, the thorns 211 on the conical section 21 can clamp the pipe 4 and prevent the pipe 4 from being pulled out.

[0037] When the pipe 4 is inserted into the second connection end 12 , it forms an extrusion sealing structure with the sealing ring 13 in the second connection end 12 . After water flows through the pipe 4 , the sealing ring 13 can play a sealing role to prevent water from leaking from the gap between the pipe 4 and the connector 1 .

[0038] As an embodiment, the first connecting end 11 of the connector 1 of the present invention is connected to an elbow connector. Figure 2 The outside of the connecting end of the elbow connector is provided with an external thread, and the inside of the first connecting end 11 is provided with an internal thread corresponding to the above-mentioned external thread; through thread matching, the elbow connector is connected to the first connecting end 11, and then the second connecting end 12 of the connector 1 is connected to the pipe 4 according to the above process to complete the assembly process.

[0039] As another embodiment, the first connecting end 11 of the connecting member 1 of the present invention is connected to a two-way joint. Figure 5 The connecting ends of the two-way joint are both provided with external threads on the outside, and the first connecting end 11 is provided with internal threads corresponding to the above-mentioned external threads on the inside; through threaded matching, the two connecting ends of the two-way joint are connected to the first connecting end 11 of the pipe joint of the present invention, and then the second connecting end 12 is connected to the pipe 4 according to the above process to complete the assembly process.

[0040] As another embodiment, the first connecting end 11 of the connector 1 of the present invention is connected to a three-way joint. Figure 6 The connection method of the tee joint is the same as that of the two-way joint. The difference is that the tee joint has three connection ends, so three pipe joints need to be connected.

[0041] As another embodiment, the connector 1 of the present invention is used to connect two sections of pipes 4. Figure 7 , in this embodiment:

[0042] A protruding separation ring 15 is provided inside the connector 1, and two ends of the separation ring 15 form a first connection end 11 and a second connection end 12 respectively. The first connection end 11 and the second connection end 12 are used to plug in two different pipes, and the two different pipes are separated by the separation ring 15 and do not touch each other. In the present invention, the separation ring 15 is arranged in the middle of the interior of the connector 1, and a symmetrical structure is formed at both ends of the connector 1 through the separation ring 15; concave connecting rings 14 are respectively provided on the inner sides of the ends of the first connection end 11 and the second connection end 12, and the connecting ring 14 is used to connect the circular ring segment 22 of the clamping member 2; a plurality of sealing rings 13 are provided in the interior of the connector 1 between the separation ring 15 and the connecting ring 14. In the present invention, at least two sealing rings 13 are provided, and are evenly distributed on both sides of the separation ring 15.

[0043] Since the first connecting end 11 and the second connecting end 12 are respectively connected to the annular segment 22 of the clamping member 2, that is, both ends of the connecting member 1 are connected to the clamping member 2, the conical segment 21 of each clamping member 2 is sleeved on the clamping hole 31 of the first force-applying member 3, and the fastener 33 is inserted into the first fastening hole 32 on the first force-applying member 3 on the same side.

[0044] During use, the two sections of pipe 4 to be connected are respectively inserted into the compression hole 31 of the first force-applying member 3, the tapered section 21 of the clamping member 2, and the first connecting end 11 and the second connecting end 12 of the connecting member 1 in sequence, and the two sections of pipe 4 are respectively abutted against the separation ring 15, and then the two first force-applying members 3 are locked by the fastener 33, so that the two first force-applying members 3 are respectively close to the first connecting end 11 and the second connecting end 12, and the clamping member 2 is squeezed; Figure 7 Taking the first force-applying member 3 at the upper middle end as an example, the first force-applying member 3 will press the clamping member 2 downward. As the first force-applying member 3 moves downward, the clamping hole 31 reduces the inner diameter of the clamping member 2, and the bayonet 23 closes, clamping the pipe 4 in the conical section 21. At the same time, since the two first force-applying members 3 are locked by the fastener 33, the annular section 22 of the clamping member 2 is also locked in the connecting ring 14 of the connecting member 1.

[0045] Although the second connection terminal 12 in this embodiment is Figure 2 , Figure 5 and Figure 6 The structure of the second connection end 12 described is slightly different, but it should be understood that the basic structure and function of the second connection end 12 in this embodiment are also equivalent to the second connection end 12 in the aforementioned embodiment.

[0046] In summary, the present invention sets a connecting piece, which includes a first connecting end and a second connecting end, and the first connecting end and the second connecting end are used to connect different pipes at both ends; the end of the second connecting end is provided with an inwardly concave connecting ring, and the connecting ring is connected to a clamping piece, and the clamping piece is used to clamp and fix the pipe to prevent the pipe from being dislodged due to the reaction force of water pressure; the outside of the first connecting end is provided with a second force-applying piece, and the clamping piece is sleeved on the first force-applying piece, and fasteners are inserted through the first force-applying piece and the second force-applying piece, and the first force-applying piece and the second force-applying piece are locked by the fastener, and the clamping piece is clamped in the connecting piece at the same time, and the locking method of the fastener is convenient and labor-saving, construction time is saved, and work efficiency is improved; at the same time, it is not easy to loosen, and the stability of the pipe connection is guaranteed. In summary, the beneficial effects of the present invention are: it can quickly realize the connection of the pipe, the connection is relatively convenient, and the stability and sealing after the connection are good.

[0047] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A quick-connect pipe joint, characterized in that: It includes a connecting member, a clamping member, a first force applying member and a second force applying member; The connecting member comprises a first connecting end and a second connecting end, the end of the second connecting end is provided with a concave connecting ring; the outside of the first connecting end is provided with a second force applying member, and both sides of the second force applying member are provided with second fastening holes; The clamping member comprises a conical section and a circular ring section, the conical section is connected to the first force applying member, and the circular ring section is plugged into the connecting ring; the clamping member is also provided with a bayonet; The first force-applying member is provided with a pressing hole with a conical interior, the pressing hole is sleeved with the conical section, and the inner diameter of the thick-diameter end of the pressing hole is smaller than the inner diameter of the thick-diameter end of the conical section; both ends of the first force-applying member are provided with a first fastening hole, and fasteners are inserted into the first fastening hole and the second fastening hole located on the same side; A protruding separation ring is also provided inside the connecting member, and the two ends of the separation ring respectively form the first connection end and the second connection end; the connecting rings are respectively provided on the inner sides of the ends of the first connection end and the second connection end, and the two connecting rings are both connected to the annular section of the clamping member, and the conical sections of the two clamping members are both sleeved on the clamping holes of the first force-applying member, and the fasteners are inserted into the first fastening holes of the two first force-applying members located on the same side; The separation ring is arranged in the middle of the connecting member, and the connecting member forms a symmetrical structure through the separation ring; The part inside the connecting piece between the separating ring and the connecting ring is provided with a plurality of sealing rings; The sealing ring is provided with at least two rings, and is evenly distributed on both sides of the separation ring; The interior of the conical section is provided with a plurality of circles of thorns; The tips of the plurality of circles of the thorns are located on the same vertical line.

2. The quick-connect pipe connector according to claim 1, characterized in that: The length of the circular ring segment is not less than the length of the connecting ring.

3. The quick-connect pipe joint according to claim 1, characterized in that: The taper angle of the pressing hole is the same as the taper angle of the tapered section.

4. The quick-connect pipe connector according to claim 1, characterized in that: An internal thread is provided inside the first connecting end.

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