Quick connector for pipeline

Abstract

The utility model discloses a quick connector for a pipeline, which belongs to the technical field of pipeline connecting pieces, and is characterized in that the quick connector comprises a connector, a hoop and a limiting component, a liner tube for the pipeline to insert is arranged in the connector, a flow channel communicated with the pipeline is arranged in the liner tube, and an inserting groove for the pipeline to insert is arranged between the liner tube and the connector. The limiting assembly is connected to the connector through the hoop, the limiting assembly is located on the outer side of the liner pipe, and the limiting assembly and the liner pipe are matched to limit the pipeline. The to-be-connected pipeline is directly inserted into the inserting groove from the limiting assembly, so that the inner wall of the to-be-connected pipeline is attached to the outer wall of the liner pipe, the liner pipe supports the inner wall of the to-be-connected pipeline, even if the to-be-connected pipeline is extruded by the limiting assembly, the inner diameter of the to-be-connected pipeline cannot be reduced at the liner pipe, and the pipeline is in a high-temperature or low-temperature environment; and the limiting assembly can guarantee the limiting quality of the pipeline, and the connecting effect of the quick connector and the pipeline can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline connectors, in particular to a quick connector for pipelines. Background Art

[0002] In daily production and life, many fluids need to be transmitted through pipelines, but the length of the pipeline is limited, and two or more sections of the pipeline need to be connected through pipe joints to increase the overall length of the pipeline; pipe joints are also required between the pipeline and the water-using equipment.

[0003] A Chinese patent with publication number CN201836571U discloses a pipe quick connector, including a connector body, wherein the following components are arranged in sequence inside the connector body along the direction of pipe insertion: a locking cap for preventing internal components from withdrawing; a locking cap stop component, which is arranged on the pipe insertion end of the connector body and is used to prevent the locking cap from withdrawing; a disassembly ring, which is used to release the jamming of the pipe; a clamping ring, which has an annular elastic flange and a plurality of clamping teeth for clamping the outer wall of the pipe; a conical seat, which is slidably connected to the inner wall of the connector body and is used to prevent the clamping ring from moving in the direction of pipe insertion; a conical seat boss, which is arranged on the inner wall of the connector body and is used to prevent the conical seat from moving in the direction of pipe insertion; an O-ring, which is used to form a sealed connection with the outer wall of the pipe after the pipe is inserted into the connector; an O-ring boss, which is arranged on the inner wall of the connector body and is used to prevent the O-ring from moving in the direction of pipe insertion; and a stop component, which is arranged on the inner wall of the connector body and is used to prevent the pipe from moving in the insertion direction.

[0004] The above technical solution has the following defects: when the above quick connector is used as a connector for a hose, the end of the hose is inserted into the connector body, and the clamping teeth on the clamping ring are pressed against the outer wall of the hose. When liquid is passed into the hose and the hose expands, the clamping teeth will further press against the outer wall of the hose and clamp the hose to prevent the hose from falling off from the connector. In the high temperature in summer at low latitudes, the hose will be softened by heat. If the pressure in the hose is reduced at this time, or when there is no water, the clamping teeth will still squeeze the hose, causing the hose to deform inward, resulting in a reduction in the inner diameter of the hose at the clamping teeth, which will eventually reduce the flow of the medium in the hose; moreover, after the hose is softened by heat in the connector, the limiting effect of the clamping teeth on the hose is reduced, and the hose is not only easy to loosen, but can even be directly pulled out of the connector, resulting in poor connection effect; in addition, in order to ensure the service life of the connector body, the connector body is made of copper metal as a whole, which not only makes the material itself more expensive, but also needs to be processed multiple times before being assembled with other components, resulting in high production costs and limited benefits for the above connector, which is not conducive to market competition. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems in the prior art and to propose a quick connector for pipelines. The technical problem to be solved by the utility model is: how to improve the connection effect between the connector and the pipeline.

[0006] The above technical objectives of the utility model can be achieved through the following technical solutions:

[0007] A quick connector for pipelines includes an interface, a clamp, and a limit assembly. The interface is provided with a liner for the pipeline to be plugged in. The liner has a flow channel connected to the pipeline. A plug-in groove for the pipeline to be inserted is provided between the liner and the interface. The clamp connects the limit assembly to the interface. The limit assembly is located on the outside of the liner, and the limit assembly cooperates with the liner to limit the pipeline.

[0008] In the above-mentioned quick connector, the material of the interface includes plastic or metal.

[0009] In the above-mentioned quick connector, the liner and the interface are integrally formed, and the outer end of the liner has a guide surface.

[0010] In the above-mentioned quick connector, the end of the interface away from the liner has a connecting end, and a sheath is arranged outside the connecting end.

[0011] In the above-mentioned quick connector, the material of the sheath is hard metal.

[0012] In the above-mentioned quick connector, the outer end of the flow channel has a flow guide surface connected to the pipeline.

[0013] In the above-mentioned quick connector, the clamp is sleeved on the end of the interface, and the two ends of the clamp have a first curling edge and a second curling edge respectively. The first curling edge fits with the protrusion outside the interface, and the second curling edge fits with the outer wall of the limit assembly.

[0014] In the above-mentioned quick connector, the limiting assembly includes a base, a pressure cap, and a clamping ring. The clamping ring connects the base to the interface. The base has a communicating limiting groove and an assembly hole. The pressure cap and the clamping ring are both arranged in the limiting groove, and the pressure cap cooperates with the limiting groove to limit the clamping ring. A plurality of teeth are arranged at circumferential intervals in the clamping ring. The teeth are all bent toward the interface and close to the outer wall of the liner. A sharp edge is provided at the end of each of the teeth, and a yield surface is provided at one end of the pressure cap close to the tooth.

[0015] In the above-mentioned quick connector, the outer wall of the pressure cap is provided with a flange, and the limiting groove is provided with a positioning groove for installing the flange, and the positioning groove limits the flange.

[0016] In the above-mentioned quick connector, a mounting groove is provided on the interface, a sealing ring is arranged in the mounting groove, the pressure cap cooperates with the mounting groove to limit the sealing ring, and the inner ring of the sealing ring can be pressed against the outer wall of the pipeline.

[0017] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0018] The pipe to be connected is directly inserted into the plug-in groove from the limiting component, so that the inner wall of the pipe to be connected is close to the outer wall of the liner, and the inner wall of the pipe to be connected is supported by the liner. Even if it is squeezed by the limiting component, the inner diameter of the pipe to be connected will not be reduced at the liner. The limiting component can ensure the limiting quality of the pipe in high or low temperature environments, which can effectively improve the connection effect between the quick connector and the pipe. In addition, the entire interface is made of plastic, and the limiting component and the interface are connected as a whole by a clamp, which can reduce the production cost of the quick connector; the sheath outside the connection end can improve the structural strength and wear resistance of the connection end, ensuring the service life of the quick connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional schematic diagram of the interface;

[0020] Figure 2 This is one of the external structure diagrams of the embodiment;

[0021] Figure 3 for Figure 2 A cross-sectional schematic diagram of

[0022] Figure 4 is a cross-sectional schematic diagram of a limiting component;

[0023] Figure 5 is a cross-sectional schematic diagram of a snap ring;

[0024] Figure 6 for Figure 2 Schematic cross-section after the explosion;

[0025] Figure 7 It is a schematic diagram of the embodiment after being connected with the pipeline;

[0026] Figure 8 The second schematic diagram of the external structure of the embodiment;

[0027] Fig. 9 for Figure 8 Schematic cross-sectional view of .

[0028] Reference numerals: 1. pipeline;

[0029] 100, interface; 110, liner; 111, flow channel; 112, guide surface; 113, flow guide surface; 120, plug-in slot; 130, connection end; 131, sheath; 140, protrusion; 150, installation slot; 151, sealing ring;

[0030] 200, clamp; 210, curling edge 1; 220, curling edge 2;

[0031] 300, limit assembly; 310, base; 311, limit groove; 3111, positioning groove; 312, assembly hole; 3121, step surface; 320, pressure cap; 321, clearance surface; 322, flange; 330, snap ring; 331, latch tooth; 332, sharp edge; 340, unlocking tube; 341, center hole; 342, plug; 3421, inclined surface. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0033] A quick connector for pipes, such as Figure 1-Figure 9 As shown, it includes an interface 100, a clamp 200, and a limiting assembly 300. A liner 110 for plugging in the pipeline 1 is arranged in the interface 100. The liner 110 has a flow channel 111 connected to the pipeline 1. The outer end of the liner 110 is located in the limiting assembly 300. A plug-in groove 120 for inserting the end of the pipeline 1 is provided between the liner 110 and the interface 100. The clamp 200 connects the limiting assembly 300 to the end of the interface 100. After the pipeline 1 passes through the limiting assembly 300 and is plugged into the outer wall of the liner 110, the limiting assembly 300 cooperates with the liner 110 to limit the pipeline 1.

[0034] The material of the interface 100 includes PPSU plastic or low-cost metal; in some embodiments, the liner 110 and the interface 100 are connected by snap connection, thread connection or integral molding, and the liner 110 and the interface 100 are made of the same material.

[0035] The outer end of the liner 110 has a guide surface 112 for facilitating the insertion of the end of the pipe 1 to be connected, and the outer end of the flow channel 111 has a guide surface 113 that communicates with the pipe 1 to be connected.

[0036] like Figure 1 , Figure 3 As shown, the end of the interface 100 away from the liner 110 has a connection end 130, the interior of the connection end 130 is connected to the flow channel 111, and the connection end 130 is used to connect to an adaptor joint or a water user. The connection end 130 is covered with a sheath 131, and the outer wall shape of the connection end 130 is the same as the outer wall shape of the sheath 131; for example, if the outer wall of the connection end 130 is hexagonal, the outer shape of the sheath 131 is also hexagonal. Figure 8 , Fig. 9 As shown, in some embodiments, the sheath 131 only covers the end of the connection end 130 and does not need to completely wrap the outer wall of the connection end 130 .

[0037] Furthermore, the material of the sheath 131 is hard metal, and the hard metal is preferably stainless steel, high-strength aluminum alloy or other alloy materials. The sheath 131 is used to enhance the structural strength and wear resistance of the connecting end 130, thereby increasing its service life.

[0038] The clamp 200 is sleeved on the end of the interface 100 , and has a first curling edge 210 and a second curling edge 220 at both ends of the clamp 200 . The first curling edge 210 fits with the protrusion 140 outside the interface 100 , and the second curling edge 220 fits with the outer wall of the limiting component 300 .

[0039] like Figure 3-Figure 6 As shown, the limiting assembly 300 includes a base 310, a pressure cap 320, a clamping ring 330 and an unlocking tube 340, the clamping hoop 200 is wrapped around the outside of the base 310 and connected to the interface 100, and the curling edge 220 is fitted with the end of the base 310, the base 310 has a connected limiting groove 311 and an assembly hole 312, the clamping ring 330 is arranged at the bottom of the limiting groove 311, the pressure cap 320 is arranged at the opening of the limiting groove 311 and close to the interface 100, and the pressure cap 320 and the limiting groove 311 cooperate to limit the clamping ring 330, and a plurality of teeth 331 are arranged at intervals in the circumferential direction of the clamping ring 330, each of the teeth 331 has elastic deformation performance, and each of the teeth 331 is bent toward the interface 100 and close to the outer wall of the liner 110, To ensure that the latch teeth 331 can be smoothly embedded in the outer wall of the pipe 1, a sharp edge 332 is provided at the end of each latch tooth 331, and the sharp edge 332 can guide the pipe 1 inserted into the clamping ring 330, and a yield surface 321 for each latch tooth 331 to deform is provided at one end of the pressure cap 320 close to the latch teeth 331; the unlocking tube 340 is slidably arranged in the assembly hole 312, and the unlocking tube 340 has a central hole 341 for the pipe 1 to be inserted, and the assembly hole 312 has a step surface 3121, and the step surface 3121 limits the plug 342 at the inner end of the unlocking tube 340, so that the plug 342 can slide between the step surface 3121 and the latch teeth 331, and the outer wall of the plug 342 has an inclined surface 3421 that can squeeze the latch teeth 331 to deform toward the yield surface 321.

[0040] like Figure 4 As shown, preferably, the outer wall of the pressure cap 320 is provided with a flange 322, and a positioning groove 3111 for installing the flange 322 is provided in the limiting groove 311, and the positioning groove 3111 limits the flange 322, thereby ensuring the position of the retaining ring 330 in the limiting groove 311, and at the same time, it can also allow the limiting assembly 300 to form an integral component for easy assembly.

[0041] An installation groove 150 is opened at the end of the interface 100 close to the base 310, and a sealing ring 151 is arranged in the installation groove 150. The pressure cap 320 cooperates with the installation groove 150 to limit the sealing ring 151. The inner ring of the sealing ring 151 can be tightly pressed against the outer wall of the pipe 1, thereby improving the air tightness between the pipe 1 and the plug-in groove 120.

[0042] The working principle of the utility model is as follows:

[0043] The pipe 1 to be connected is a hose, and the end of the pipe 1 is inserted into the center hole 341, and then guided by the guide surface 112 and the sharp edge 332, so that the end of the pipe 1 is more easily plugged into the outside of the liner 110. After the end of the pipe 1 enters the plug-in groove 120, the pipe 1 is connected with the flow channel 111, and the clamping teeth 331 press the pipe 1 against the outside of the liner 110, and the inner wall of the sealing ring 151 is pressed against the outer wall of the pipe 1, and the connection between the quick connector and the pipe 1 to be connected is completed. If the pipe 1 is separated from the plug-in groove 120 due to force, the clamping teeth 331 will be driven by the pipe 1 and deformed toward the plug 342, so that the clamping teeth 331 are further inserted into the outer wall of the pipe 1 and the pipe 1 is further pressed against the outer wall of the liner 110, so as to prevent the pipe 1 from being separated from the interface 100.

[0044] When the pipe 1 is separated from the quick connector, it is only necessary to press the unlocking tube 340 so that the plug 342 presses the latch teeth 331 toward the relinquishing surface 321 , and the pipe 1 loses the restriction of the latch teeth 331 and can be pulled out of the plug slot 120 .

[0045] After the connection end 130 is connected to the water user, the pipeline 1 can transport the medium to the water user; after the connection end 130 is connected to another joint, the pipeline 1 can transport the medium to the joint. During the process of the pipeline 1 transporting the medium, the guide surface 113 can guide the medium into the flow channel 111, thereby preventing the medium from being blocked at the liner 110.

[0046] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the protection scope of the present invention. The protection scope of the present invention is determined by the appended claims.

Claims

1. A quick connector for a pipeline, characterized in that: The invention comprises an interface (100), a clamp (200), and a limit assembly (300); the interface (100) is provided with a liner (110) for plugging in a pipeline (1); the liner (110) has a flow channel (111) connected to the pipeline (1); a plug-in groove (120) for inserting the pipeline (1) is provided between the liner (110) and the interface (100); the clamp (200) connects the limit assembly (300) to the interface (100); the limit assembly (300) is located outside the liner (110), and the limit assembly (300) cooperates with the liner (110) to limit the pipeline (1).

2. The quick connector according to claim 1, characterized in that: The material of the interface (100) includes plastic or metal.

3. The quick connector according to claim 2, characterized in that: The liner tube (110) and the interface (100) are integrally formed, and the outer end of the liner tube (110) has a guide surface (112).

4. The quick connector according to claim 1, characterized in that: The end of the interface (100) away from the liner (110) has a connecting end (130), and a sheath (131) is arranged outside the connecting end (130).

5. The quick connector according to claim 4, characterized in that: The material of the sheath (131) is hard metal.

6. The quick connector according to claim 1, characterized in that: The outer end of the flow channel (111) has a flow guide surface (113) that is in communication with the pipeline (1).

7. The quick connector according to claim 1, characterized in that: The clamp (200) is sleeved on the end of the interface (100), and the two ends of the clamp (200) respectively have a first curling edge (210) and a second curling edge (220), the first curling edge (210) is in contact with the protrusion (140) outside the interface (100), and the second curling edge (220) is in contact with the outer wall of the limiting component (300).

8. The quick connector according to any one of claims 1 to 7, characterized in that: The limiting assembly (300) comprises a base (310), a pressure cap (320), and a clamp (330); the clamp (200) connects the base (310) to the interface (100); the base (310) has a limiting groove (311) and an assembly hole (312) that are connected to each other; the pressure cap (320) and the clamp (330) are both arranged in the limiting groove (311); and the pressure cap (320) and the clamp (330) are connected to each other. The limiting groove (311) cooperates to limit the retaining ring (330), and a plurality of latch teeth (331) are arranged at intervals in the inner circumferential direction of the retaining ring (330). The latch teeth (331) are all bent toward the interface (100) and close to the outer wall of the liner (110), and a sharp edge (332) is provided at the end of each latch tooth (331). A yield surface (321) is provided at one end of the pressure cap (320) close to the latch teeth (331).

9. The quick connector according to claim 8, characterized in that: The outer wall of the pressing cap (320) is provided with a flange (322), and a positioning groove (3111) for installing the flange (322) is provided in the limiting groove (311), and the positioning groove (3111) limits the flange (322).

10. The quick connector according to claim 8, characterized in that: The interface (100) is provided with a mounting groove (150), a sealing ring (151) is arranged in the mounting groove (150), the pressure cap (320) cooperates with the mounting groove (150) to limit the position of the sealing ring (151), and the inner ring of the sealing ring (151) can be tightly pressed against the outer wall of the pipeline (1).

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