A combination quick connector

Abstract

The utility model provides a kind of combined quick coupling, belong to the technical field of connecting fitting.It solves the problem that existing quick coupling cannot find leakage in time after butt joint.This combined quick coupling, including left shell, right shell and the clamping unit of left shell and right shell are connected, the clamping unit includes movable sleeve and several ball, left shell is provided with and is connected with its detection unit for detecting gas leakage, detection unit includes sealing cylinder and movable rod, the end surface of sealing cylinder is provided with the recessed inwardly in axial and the installation groove for movable rod installation, the inner wall of sealing cylinder is provided with the recessed inwardly in axial and the communication groove being connected with above-mentioned installation groove in detection cavity, movable rod is provided with and is connected with its auxiliary unit on the outer periphery of communication groove, and with leakage gas pressure cooperation, and facilitate movable rod outer end to extend out.The utility model has the advantages of being able to find leakage in time.

Description

Technical Field

[0001] This utility model belongs to the field of connecting accessories technology and relates to a combined quick connector. Background Technology

[0002] Fittings are generally used for pipeline connections, and the connection method of fittings is generally threaded connection, which has a relatively low assembly efficiency. During assembly, it is also affected by environmental factors. For this reason, quick coupling structures have emerged on the market. This structure is generally composed of a left connecting shell, a right connecting shell, a snap-fit ​​sleeve, ball bearings, two abutment rods, two return springs, and several sealing rings, thereby improving assembly efficiency. However, in actual use, leakage may occur at the connection between the left and right connecting shells during long-term use. After the fitting is connected, it is generally not equipped with a monitoring structure. For hydraulic leakage, it is easy to observe manually, but for gas leakage, manual observation is inconvenient. If not dealt with in time, accidents can easily occur, thus failing to meet the usage requirements. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a quick connector capable of detecting gas leaks.

[0004] The objective of this utility model can be achieved through the following technical solution: A combined quick connector includes a left housing, a right housing, and a snap-fit ​​unit connecting the left and right housings. The snap-fit ​​unit is disposed on the right housing and slidably engages with it. The snap-fit ​​unit comprises a movable sleeve and several ball bearings. The left housing is characterized by having a detection unit connected to it for detecting gas leaks. The detection unit includes a sealing cylinder sleeved on and connected to the left housing, having a detection cavity, and a movable rod disposed within the sealing cylinder and slidably engages with it. After the left and right housings are snap-fitted together, the sealing cylinder on the left housing slides against the movable sleeve on the right housing. One end face of the sealing cylinder has an axially inwardly recessed mounting groove for mounting the movable rod. The inner wall of the sealing cylinder at the detection cavity has an axially inwardly recessed communicating groove connected to the mounting groove. The outer periphery of the movable rod at the communicating groove has an auxiliary unit connected to it, cooperating with the leaking gas pressure, and facilitating the extension of the outer end of the movable rod.

[0005] In the aforementioned combined quick connector, a plurality of sealing rings are provided between the movable sleeve and the sealing cylinder to enhance the sealing performance of the connection, and the plurality of sealing rings are arranged coaxially.

[0006] In the aforementioned combined quick connector, the auxiliary unit includes a movable ring plate, an abutment spring, and a baffle. The movable ring plate is sleeved on and connected to the movable rod, and the abutment spring is also sleeved on the movable rod. The two ends of the abutment spring abut against the movable ring plate and the inner wall of the sealing cylinder, respectively. The baffle is disposed inside the sealing cylinder and connected to it, and slides in cooperation with the movable ring plate.

[0007] Compared with existing technologies, this modular quick connector can detect leaks by incorporating a detection unit, which also serves to limit leaks. Attached Figure Description

[0008] Figure 1 This is a cross-sectional structural diagram of this modular quick connector.

[0009] In the diagram, 1 is the left shell; 2 is the right shell; 3 is the movable sleeve; 4 is the sealing cylinder; 5 is the movable rod; 6 is the movable ring plate; 7 is the contact spring; and 8 is the baffle. Detailed Implementation

[0010] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0011] like Figure 1As shown, this modular quick connector includes a left housing 1, a right housing 2, and a snap-fit ​​unit connecting the left housing 1 and the right housing 2. The snap-fit ​​unit is mounted on and slidably engages with the right housing 2, and comprises a movable sleeve 3 and several ball bearings. The left housing 1 is equipped with a detection unit connected to it for detecting gas leaks. The detection unit includes a sealing cylinder 4 fitted onto and connected to the left housing 1, having a detection cavity, and a movable rod 5 disposed within and slidably engages with the sealing cylinder 4. After the left housing 1 and right housing 2 are snap-fitted together... This allows the sealing cylinder 4 on the left housing 1 to slide and fit against the movable sleeve 3 on the right housing 2, thereby sealing the detection chamber. One end face of the sealing cylinder 4 has an axially inwardly recessed mounting groove for the installation of the movable rod 5. The length of this mounting groove is less than the length of the sealing cylinder 4 and greater than the length of the detection chamber. The inner wall of the sealing cylinder 4 at the detection chamber location has an axially inwardly recessed communicating groove that connects to the aforementioned mounting groove. The movable rod 5 at the communicating groove location has an auxiliary groove on its outer periphery that connects to it, cooperates with the leakage pressure, and facilitates the extension of the outer end of the movable rod 5. The unit includes a plurality of sealing rings between the movable sleeve 3 and the sealing cylinder 4 to enhance the sealing at the connection, and the sealing rings are coaxially arranged. The sealing rings are fitted onto the movable sleeve 3 or the sealing cylinder 4. Annular grooves for embedding the sealing rings can be provided on the movable sleeve 3 and the sealing cylinder 4. The auxiliary unit includes a movable ring plate 6, an abutting spring 7, and a baffle 8. The movable ring plate 6 is fitted onto and connected to the movable rod 5. The abutting spring 7 is also fitted onto the movable rod 5, and its two ends abut against the inner walls of the movable ring plate 6 and the sealing cylinder 4, respectively. The baffle 8 is located on the sealing cylinder. Inside the 4, and connected to it, and slidably engaged with the movable ring plate 6, the baffle 8 is located at the junction of the recessed groove and the detection chamber. After assembly, the baffle 8, through its cooperation with the movable ring plate 6 and the sealing cylinder 4, forms a sealed cavity in the recessed groove for the installation of the abutment spring 7. A sealing ring can also be fitted on the movable ring plate 6. When a leak occurs at the connection between the left housing 1 and the right housing 2, the air pressure in the detection chamber pushes the movable rod 5 to move outward, causing the outer end of the movable rod 5 to extend out of the sealing cylinder 4, thereby indicating that a leak has occurred. At the same time, the sealing cylinder 4 can also provide leak protection to prevent direct gas leakage.

[0012] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0013] Although this document uses terms such as "etc." extensively, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this invention; interpreting them as any additional limitation would contradict the spirit of this invention.

Claims

1. A modular quick connector, comprising a left housing (1), a right housing (2), and a snap-fit ​​unit for connecting the left housing (1) and the right housing (2), the snap-fit ​​unit being disposed on and slidably engaged with the right housing (2), and the snap-fit ​​unit comprising a movable sleeve (3) and a plurality of balls, characterized in that, The left housing (1) is provided with a detection unit connected to it for detecting gas leakage. The detection unit includes a sealing cylinder (4) sleeved on the left housing (1) and connected to it, and having a detection cavity, and a movable rod (5) disposed inside the sealing cylinder (4) and slidingly engaged with it. After the left housing (1) and the right housing (2) are snapped together, the sealing cylinder (4) on the left housing (1) and the movable sleeve (3) on the right housing (2) slide and fit together. One end face of the sealing cylinder (4) is provided with an axially inward recessed mounting groove for the movable rod (5) to be installed. The inner wall of the sealing cylinder (4) located at the detection cavity is provided with an axially inward recessed communicating groove connected to the above-mentioned mounting groove. The outer periphery of the movable rod (5) located at the communicating groove is provided with an auxiliary unit connected to it, cooperating with the leaked gas pressure, and facilitating the extension of the outer end of the movable rod (5).

2. The combined quick connector according to claim 1, characterized in that, A number of sealing rings are provided between the movable sleeve (3) and the sealing cylinder (4) to enhance the sealing of the connection, and the number of sealing rings are arranged coaxially.

3. A combined quick connector according to claim 1, characterized in that, The auxiliary unit includes a movable ring plate (6), a contact spring (7), and a baffle (8). The movable ring plate (6) is sleeved on and connected to the movable rod (5). The contact spring (7) is also sleeved on the movable rod (5), and the two ends of the contact spring (7) abut against the movable ring plate (6) and the inner wall of the sealing cylinder (4) respectively. The baffle (8) is set inside the sealing cylinder (4) and connected to it, and slides in cooperation with the movable ring plate (6).

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