Leakage-proof quick connector for gas source pipeline

Abstract

The utility model discloses an air source pipeline leakproof quick connector, which relates to the technical field of air path connectors and comprises a central connecting seat, two ends of the central connecting seat are fixedly connected with a pressure pipe outer sleeve, and a plurality of square grooves are distributed on the inner wall of the pressure pipe outer sleeve at equal intervals. Compression sliding blocks are movably inserted into a plurality of square grooves in the inner wall of the pressing pipe outer sleeve, expansion air bags are fixedly connected between the compression sliding blocks and the bottoms of the square grooves, an airtight inner cylinder is fixedly connected to the center of the inner wall of the center connecting base, and gas is pushed into the expansion air bags through piston insertion rings. The outer wall of the gas source pipeline is pressed by the pressing sliding block to be matched with the negative pressure of the inner end of the piston inserting ring, stable fixing of the inserting inner cylinder at the two ends of the center connecting base is effectively guaranteed, stable fixing of a connector of the gas source pipeline is guaranteed, the connecting efficiency of the gas source pipeline is greatly improved, the gas tightness of the connecting structure is guaranteed, and gas leakage is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of gas circuit joint, specifically relates to a gas source pipeline leakproof quick joint. BACKGROUND

[0002] Gas plays a crucial role in industrial production, as it provides the energy needed to drive various pneumatic devices. These pneumatic devices are widely used in automated production lines, mechanical manufacturing, chemical industry, and many other fields. The stable supply of gas is the foundation for ensuring the normal operation of these devices.

[0003] However, in practical applications, gas pipelines may be damaged due to various reasons, leading to gas leakage. Once the gas pipeline leaks, not only will it cause resource waste, but more importantly, it may cause the devices relying on the gas to malfunction, thereby affecting the overall production line efficiency.

[0004] In modern production environments, the demand for quick connections is increasing. Quick joints can simplify the installation process, improve operational efficiency, and reduce time and labor costs associated with connecting and disconnecting pipelines. In particular, in situations where gas sources need to be frequently replaced or gas transmission paths need to be adjusted, quick joints are particularly important. At the same time, gas leak prevention is also crucial. Gas leakage not only leads to resource waste, but also may cause environmental pollution and even safety accidents in some cases. Therefore, ensuring the sealing and stability of the gas joint is the key to preventing gas leakage, and for this purpose, we propose a gas source pipeline leakproof quick joint. SUMMARY

[0005] The utility model aims at: for solving the problem that the gas source pipeline is quickly connected and the leakage at the joint is prevented in the situation where the gas source needs to be frequently replaced or the gas transmission path needs to be adjusted, the utility model provides a gas source pipeline leakproof quick joint.

[0006] The utility model adopts the following technical solutions to achieve the above-mentioned purpose:

[0007] The utility model provides a kind of air source pipeline leak-proof quick connector, including center connecting seat, the both ends of the center connecting seat are fixedly connected with pressure pipe outer sleeve, and the inner wall of pressure pipe outer sleeve is distributed with multiple square grooves at equal intervals, the multiple square grooves in the inner wall of pressure pipe outer sleeve are movably inserted with compression slide block, and expansion air bag is fixedly connected between compression slide block and the bottom of square groove, the inner wall center of the center connecting seat is fixedly connected with airtight inner cylinder, and airtight inner cylinder both ends with pressure pipe outer sleeve outer end flush, both ends the pressure pipe outer sleeve and airtight inner cylinder are movably inserted with plug-in inner cylinder, and plug-in inner cylinder side towards center connecting seat is fixedly connected piston plug ring, plug-in inner cylinder outer wall is sleeved with air source pipeline structure, and the sidewall middle part of center connecting seat is provided with one-way communication mechanism between piston plug ring inboard and expansion air bag.

[0008] Further, the one-way communication mechanism includes a communication cavity, a communication docking groove is formed in the center of the bottom of the communication cavity, and the bottom center of the communication docking groove is in gap communication with the two side pressure pipe outer sleeves and airtight inner cylinders through a connecting channel, a sealing plug is arranged in the communication docking groove, and a compression spring is connected between the outer end of the sealing plug and the outer sidewall of the communication cavity, the upper end of the communication cavity is connected to the two side multiple expansion air bags through a gas delivery pipe respectively.

[0009] Further, the outer center of the sealing plug is fixedly connected with a guide rod, and the guide rod is movably inserted through the communication cavity.

[0010] Further, the center connecting seat is provided with a sliding sealing ring inside the guide rod through hole, and the outer end of the guide rod is fixedly connected with a hand pull handle.

[0011] Further, the communication docking groove is a tapered groove with a large end facing outward, and the lower end of the sealing plug matches the tapered structure of the upper end of the communication docking groove.

[0012] Further, the outer wall of the plug-in inner cylinder is distributed with multiple rows of sealing protrusions at equal intervals on one side of the air source pipeline inner wall.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. The utility model discloses a center connecting seat, and the center connecting seat two sides pressure pipe outer sleeve and center airtight inner tube can form annular seal cavity at the both sides of center connecting seat, through the setting of the plug-in inner tube, the plug-in inner tube can be inserted to the annular seal cavity of center connecting seat both sides after being sleeved on the outside of plug-in inner tube one end of gas source pipeline joint, through the setting of the piston plug ring, piston plug ring can form the sealing structure between pressure pipe outer sleeve inner wall and airtight inner tube outer wall after having one pressure tight sliding block bottom, with the insertion of piston plug ring, the air between piston plug ring and center connecting seat is sent into multiple inflation air bags through one-way communication mechanism, and the inflation air bag is pushed out through the expansion of inflation air bag, and the outer wall of pressure tight gas source pipeline joint is pressed, makes the outer wall contact and rub of gas source pipeline and plug-in inner tube fixed, and after the most inside insertion of piston plug ring, the negative pressure is formed in the inner end of piston plug ring through the sealing structure of piston plug ring, effectively prevents the plug-in inner tube from slipping, and the gas source pipeline joint of plug-in with plug-in inner tube is only needed to be pressed in quickly, and the gas is pushed into inflation air bag through piston plug ring, makes the pressure tight sliding block press the outer wall of gas source pipeline, cooperates the negative pressure of piston plug ring inner end, effectively guarantees the stable fixing of plug-in inner tube at the both ends of center connecting seat, thereby guarantees the stable fixing of gas source pipeline joint, greatly improves the connection efficiency of gas source pipeline, and guarantees the air tightness of connection structure, prevents gas leakage.

[0015] 2. The utility model discloses a communication cavity, and the communication cavity communicates the gap between two sides pressure pipe outer sleeve and airtight inner tube through the communication butt joint groove, and the communication butt joint groove is blocked through the sealing plug, and the outside of sealing plug is pressed through the precompression of compression spring, when the piston plug ring is towards the center and is pressed, makes the sealing plug bottom pressure greater than the pressure of compression spring, can push away sealing plug through the air gap between pressure pipe outer sleeve and airtight inner tube, and then the air is pressed into the communication cavity, and then is guided into the inflation air bag of both sides through the gas pipe, realizes the one-way gas delivery, and is convenient for the quick plug-in fixing of piston plug ring.

[0016] 3. The utility model discloses a sliding sealing ring that guarantees the sealing property between guide rod and center connecting seat when sealing plug moves, and the hand pull handle can manually operate to pull out sealing plug, so that the inner cavity between communication cavity and pressure pipe outer sleeve and airtight inner tube is communicated, makes the piston plug ring can be pulled out smoothly, and is convenient for the separation of gas source pipeline. ACCURACY

[0017] Figure 1 It is the perspective drawing of the utility model;

[0018] Figure 2 It is the front cut -away view of the utility model;

[0019] Figure 3 It is the utility model Figure 2 The close -up of A place;

[0020] Figure 4 is a side sectional view of the utility model.

[0021] Sign: 1, center connecting seat; 2, press pipe outer sleeve; 3, plug-in inner cylinder; 4, airtight inner cylinder; 5, piston plug ring; 6, inflatable air bag; 7, compression slide block; 8, communication cavity; 9, guide rod; 10, sealing plug; 11, communication butt joint groove; 12, compression spring; 13, sealing convex tooth; 14, hand pull handle; 15, gas pipe. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantage of the utility model embodiment more clear, the technical scheme in the utility model embodiment will be clearly and completely described below with the drawings in the utility model embodiment.

[0023] Please refer to Figure 1 - Figure 4 The utility model provides a gas source pipeline leakproof quick -coupling, including center connecting seat 1, the both ends fixed connection of center connecting seat 1 have press pipe outer sleeve 2, and the inner wall of press pipe outer sleeve 2 is distributed with multiple square recesses at equal intervals, and the multiple square recesses of press pipe outer sleeve 2 inner wall all movably insert press tight slide block 7, and press tight slide block 7 and the bottom between square recess are fixedly connected with inflatable air bag 6, and the inner wall center of center connecting seat 1 is fixedly connected with airtight inner cylinder 4, and airtight inner cylinder 4 both ends with press pipe outer sleeve 2 outer end flush, both ends press pipe outer sleeve 2 and airtight inner cylinder 4 all movably insert plug-in inner cylinder 3, and plug-in inner cylinder 3 towards center connecting seat 1's side fixedly connected piston plug ring 5, and plug-in inner cylinder 3 outer wall sleeve has gas source pipeline structure, and the sidewall middle part of center connecting seat 1 is set with one-way communication mechanism between piston plug ring 5 inboard side and inflatable air bag 6.

[0024] In the embodiment, preferably, the one-way communication mechanism comprises a communication cavity 8, a communication butt joint groove 11 is arranged at the bottom center of the communication cavity 8, and the bottom center of the communication butt joint groove 11 is in gap communication with the two side press pipe outer sleeves 2 and the airtight inner cylinder 4 through a connecting channel, a sealing plug 10 is arranged in the communication butt joint groove 11, and a compression spring 12 is connected between the outer end of the sealing plug 10 and the outer side wall of the communication cavity 8, and the upper end of the communication cavity 8 is connected with the plurality of expansion air bags 6 on the two sides through a gas conveying pipe 15; the communication cavity 8 is arranged to communicate the gap between the two side press pipe outer sleeves 2 and the airtight inner cylinder 4 through the communication butt joint groove 11, the communication butt joint groove 11 is blocked by the sealing plug 10, the outer side of the sealing plug 10 is pressed by the pre-compression force of the compression spring 12, when the piston plug ring 5 is pressed towards the center, the pressure at the bottom of the sealing plug 10 is greater than the pressure of the compression spring 12, the sealing plug 10 is pushed away by the air in the gap between the press pipe outer sleeve 2 and the airtight inner cylinder 4, the air is pressed into the communication cavity 8, and then the air is guided into the expansion air bags 6 on the two sides through the gas conveying pipe 15, thereby realizing one-way air conveying and facilitating quick plug-in and fixing of the piston plug ring 5.

[0025] In the embodiment, preferably, the outer center of the sealing plug 10 is fixedly connected with a guide rod 9, and the guide rod 9 penetrates the outer side of the communication cavity 8 and is movably plugged in; the guide rod 9 is arranged to guide the movement of the sealing plug 10, thereby ensuring stable movement of the sealing plug 10.

[0026] In the embodiment, preferably, the outer wall of the center connecting seat 1 is provided with a sliding sealing ring corresponding to the penetration hole of the guide rod 9, and the outer end of the guide rod 9 is fixedly connected with a hand pull handle 14; the sliding sealing ring is arranged to ensure the sealing between the guide rod 9 and the center connecting seat 1 during movement of the sealing plug 10, and the hand pull handle 14 is arranged to manually pull out the sealing plug 10, thereby connecting the inner cavities between the communication cavity 8 and the press pipe outer sleeve 2 and the airtight inner cylinder 4, so that the piston plug ring 5 can be smoothly pulled out, and the separation of the gas source pipeline is facilitated.

[0027] In the embodiment, preferably, the communication butt joint groove 11 is a tapered groove with a large end facing outward, and the lower end of the sealing plug 10 is matched with the tapered structure at the upper end of the communication butt joint groove 11; the tapered structure is arranged to facilitate the butt joint of the sealing plug 10 and the communication butt joint groove 11.

[0028] In the embodiment, preferably, the outer wall of the plug-in inner cylinder 3 is provided with a plurality of rows of sealing protrusions 13 distributed at equal intervals on one side of the inner wall of the gas source pipeline; the plurality of rows of sealing protrusions 13 are arranged to increase the contact friction between the outer wall of the plug-in inner cylinder 3 and the gas source pipeline, effectively prevent the gas source pipeline from slipping off, and lift the gas source pipeline through the sealing protrusions 13, so that the gas source pipeline is deformed and pressed against the outer side of the sealing protrusions 13, thereby improving the sealing performance of the contact surface between the gas source pipeline and the plug-in inner cylinder 3.

[0029] The working principle and use process of the utility model: when the device is used, the center connecting seat 1 is arranged, and the annular sealing cavity can be formed on the two sides of the center connecting seat 1 by the pressure pipe outer sleeve 2 and the center airtight inner cylinder 4 on the two sides of the center connecting seat 1, the plug-in inner cylinder 3 is arranged, and the plug-in inner cylinder 3 can be inserted into the annular sealing cavity on the two sides of the center connecting seat 1 after being sleeved on the outside of the plug-in inner cylinder 3 on the joint section of the gas source pipeline, the piston plug ring 5 is arranged, and the piston plug ring 5 can form a sealing structure between the pressure pipe outer sleeve 2 inner wall and the airtight inner cylinder 4 outer wall after the bottom of the one pressure tight sliding block 7, with the insertion of the piston plug ring 5, the air between the piston plug ring 5 and the center connecting seat 1 is sent into the plurality of expansion air bags 6 through the one-way communication mechanism, the expansion air bag 6 is expanded to push out the pressure tight sliding block 7, the outer wall of the gas source pipeline joint is pressed, the gas source pipeline and the outer wall of the plug-in inner cylinder 3 are in contact and friction fixed, and after the piston plug ring 5 is inserted into the innermost end, the negative pressure is formed in the inner end of the piston plug ring 5 through the sealing structure of the piston plug ring 5, the plug-in inner cylinder 3 is effectively prevented from slipping off, the connection operation only needs to quickly press into the gas source pipeline joint with the plug-in inner cylinder 3, the gas is pushed into the expansion air bag 6 through the piston plug ring 5, the pressure tight sliding block 7 is pressed to the outer wall of the gas source pipeline, the negative pressure in the inner end of the piston plug ring 5 is matched, the stable fixation of the plug-in inner cylinder 3 on the two ends of the center connecting seat 1 is effectively ensured, the stable fixation of the gas source pipeline joint is ensured, the connection efficiency of the gas source pipeline is greatly improved, and the air tightness of the connection structure is ensured, and gas leakage is prevented.

[0030] The above description of the disclosed embodiments enables one skilled in the art to make or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the utility model is not to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gas source piping leak-proof quick connector, characterized by: The utility model provides a center connecting seat (1) is fixedly connected with the outer sleeve (2) of pressure pipe, and the inner wall of outer sleeve (2) of pressure pipe is distributed with a plurality of square grooves at equal intervals, and the square groove of outer sleeve (2) of pressure pipe is movably inserted with the pressure slide block (7) in a plurality of, and the pressure slide block (7) is fixedly connected with the expansion air bag (6) between the bottom of square groove, the inner wall center of center connecting seat (1) is fixedly connected with the airtight inner cylinder (4), and the airtight inner cylinder (4) both ends with outer sleeve (2) of pressure pipe outer end flush, both ends the outer sleeve (2) of pressure pipe and airtight inner cylinder (4) are movably inserted with the plug-in inner cylinder (3) between, and the plug-in inner cylinder (3) is fixedly connected with piston insertion ring (5) towards one side of center connecting seat (1), the plug-in inner cylinder (3) outer wall sleeve is connected with the gas source pipeline structure, and the sidewall middle part of center connecting seat (1) is provided with one-way communication mechanism between piston insertion ring (5) inboard side and expansion air bag (6).

2. The gas source pipeline leak-proof quick connector according to claim 1, characterized in that: The one-way communication mechanism includes a communication cavity (8), a communication cavity (8) bottom center is provided with a communication docking groove (11), and the bottom center of communication docking groove (11) is communicated with both sides outer sleeve (2) of pressure pipe and airtight inner cylinder (4) through connecting channel, the communication docking groove (11) is provided with a sealing plug (10), and the outer end of sealing plug (10) is connected with the outer side wall of communication cavity (8) between the compression spring (12), the upper end of communication cavity (8) corresponds to a plurality of expansion air bags (6) respectively through gas pipe (15) communication.

3. The gas source line leak-proof quick connector according to claim 2, characterized in that: The outer side center of sealing plug (10) is fixedly connected with a guide rod (9), and the guide rod (9) penetrates the outer side movably inserted with communication cavity (8).

4. The gas source line leak-proof quick connector according to claim 3, characterized in that: The center connecting seat (1) is provided with a sliding sealing ring in the inner wall of the guide rod (9) through hole, and the outer end of the guide rod (9) is fixedly connected with a hand pull handle (14).

5. The gas source tubing leak-proof quick connector according to claim 2, characterized in that: The communication docking groove (11) is a tapered groove with a large end facing outward, and the lower end of the sealing plug (10) matches the tapered structure of the upper end of the communication docking groove (11).

6. The gas source tubing leak-proof quick connector according to claim 1, characterized in that: The outer wall of the plug-in inner cylinder (3) is distributed with a plurality of sealing teeth (13) at equal intervals on one side of the inner wall of the gas source pipeline.

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