CN104534212B - Locking type quick coupling - Google Patents

Abstract

The present invention provides a lock-type quick connector, which includes a first sealing element and an elastic device arranged in the quick connector, and also includes a second sealing element arranged between the first sealing element and the elastic device. element. In the present invention, by adding the second sealing element, the first sealing element is not affected by other parts, thereby greatly improving the sealing effect of the quick joint.

Description

A locking quick connector

technical field

The present invention relates to the field of mechanical technology, and more specifically relates to a locking type quick connector.

Background technique

In daily life, the transmission of fluid needs to be carried out through the pipeline system. In the entire pipeline system, due to the limitation of the length, it is composed of multiple sections of pipelines, and the connection between the multiple sections of pipelines needs to be carried out through pipe fittings such as joints. In order to achieve the purpose of easy pipeline installation, various quick connectors have been designed. The structure of the existing quick connector is mostly composed of a connector body, a ring-shaped distribution inclined inwardly installed in the body, and a sleeve set on the side of the mouth of the connector body where the inverted gear is located. When installing the water pipe, the water pipe is inserted into the joint, and the outer wall of the water pipe pushes the inverted tooth piece to open. When it is in place, the inverted tooth piece clamps the outer wall of the water pipe so that it cannot be pulled out, so as to achieve the purpose of quick connection. If you want to pull out the water pipe, then use the unloading sleeve with a pipe diameter larger than the water pipe to squeeze the inverted tooth piece, so that it loses the clamping force, so that the water pipe is pulled out. But also there is defective in this quick connector. The inverted teeth can only clamp pipes made of materials with low hardness, and pipes with high hardness such as stainless steel and copper pipes cannot be reliably connected, and the inverted teeth are easy to scratch the surface of the water pipe, affecting the sealing.

In order to improve the firmness of the connection between the pipe and the joint, the traditional method is to process the annular groove at the axial locking position on the periphery of the end of the joint. When the pipe is inserted into the joint, the tooth-shaped collar cuts into the groove to improve the firmness of the connection sex. The socket is composed of bushing, collar, back cushion, O-ring, unloading sleeve, etc., with complex structure and high manufacturing process requirements. Although it has a wide range of applications, the connection reliability is poor.

Contents of the invention

The present invention aims to solve at least one of the problems in the background art.

One of the objectives of the present invention is to provide a locking quick connector, which can quickly and stably realize the connection between the quick connector and the connecting pipe.

In order to achieve the above object, the present invention provides a locking quick joint, which includes a first sealing element and an elastic device arranged in the quick joint, and also includes a sealing element arranged between the first sealing element and the elastic device. between the second sealing element.

By adding the second sealing element to connect with the elastic device, the reliability of the connection between the quick joint and the connecting pipe is improved, and at the same time, the first sealing element is not affected by other parts, which greatly improves the safety of the quick joint. Sealing effect.

Further, the first sealing element and the second sealing element may be sealing rings.

Further, the elastic device may be a butterfly spring, a helical spring, or a ring spring.

Preferably, the elastic means is a wave spring.

Further, it also includes a bushing arranged in the quick connector and connected with the second sealing element, a retaining sleeve is arranged in the bushing, and a locking member is arranged on the retaining sleeve; the elastic A device is disposed within the bushing and connected to the retaining sleeve.

The use of the bushing can enhance the reliability and strength of the connection between the pipe material and the quick joint.

By using an elastic device to connect the retaining sleeve and the second sealing element, the quick connector is connected to the pipe and passed through water, and the elastic device can buffer the position change of the retaining sleeve caused by the change of water pressure, thereby slowing down The movement between the pipe material and the quick joint improves the stability of the connection and the hydraulic pressure bearing capacity of the quick joint, and also improves the sealing effect of the quick joint.

Further, the cross section of the locking member is circular.

The locking member can be a spherical steel ball, a football-shaped steel ball, or a rigid ball of other materials.

When the cross section of the locking member is circular, the locking member, the pipe and the inner wall of the quick joint are more easily locked.

Further, the inner diameter of the bush gradually decreases toward the end of the quick connector nozzle.

When the pipe is connected to the quick joint, the pipe contacts the locking member and moves the locking member toward the inner wall of the bushing. When the pipe is about to withdraw from the quick joint, the pipe and the locking The part moves to the nozzle of the quick connector, but the inner diameter of the bush at the end of the nozzle of the quick connector gradually decreases, from the contact point of the locking part with the pipe to the contact point of the locking part with the inner wall of the bushing When the sum of the distance between them and the outer diameter of the interface is greater than the inner diameter of the bush, the pipe is locked with the bush, and when the pipe further exits the quick joint, the locking line can be naturally generated, and the quick joint and the pipe It's getting tighter.

Further, the outer diameter of the retaining sleeve gradually decreases toward the end of the quick connector nozzle.

The inner diameter of one end of the retaining sleeve is gradually reduced to facilitate the relative movement between the retaining sleeve and the bushing.

Further, the outer wall of the quick connector is provided with a first shoulder and a second shoulder, and the inner wall of the quick connector is provided with a first flange structure connected with the first sealing element and connected with the second sealing element. The second flange structure.

Controlling the inner diameter tolerance of the first sealing element and the second sealing element at the inner wall of the quick joint, so that the first sealing element and the second sealing element form a certain compression ratio, when the pipe is inserted into the In the case of the quick joint described above, under the protection of the joint, the pipe material is not easily deformed, and the outer periphery is in close contact with the first sealing element and the second sealing element to form a wide sealing line, which provides a reliable guarantee for sealing; the first The second flange structure clamps the second sealing element, the second sealing element clamps the elastic device, and the elastic device is against the retaining sleeve, so that the quick connector can be more stably locked onto the connecting pipe.

Further, it also includes an unloading sleeve, one end of the unloading sleeve is arranged between the bush and the retaining sleeve, and the other end extends out of the nozzle of the quick connector.

When the pipe is to be withdrawn from the quick joint, the unloading sleeve is pushed to the inside of the bush, and the retaining sleeve is pushed to move to the inside of the quick joint, and the locking member is no longer bound by the pipe and the liner. Extrusion of the inner wall of the sleeve, at this time, the pipe can be withdrawn.

Further, the inner wall of the quick connector is also provided with a third flange structure.

The third flange structure is used to prevent pipes from continuing to enter the quick joint.

The beneficial effect of the present invention is to provide a locking quick joint, which is connected with the elastic device by adding a second sealing element, so as to improve the reliability of the connection between the quick joint and the connecting pipe, and at the same time, make the second A sealing element is not affected by other parts, which greatly improves the sealing effect of the quick joint.

Description of drawings

FIG. 1 is a schematic structural diagram of a locking quick connector according to an embodiment of the present invention.

detailed description

The present invention will be described in detail below in conjunction with specific embodiments. It should be noted that the technical features or combinations of technical features described in the following embodiments should not be regarded as isolated, and they can be combined with each other to achieve better technical effects.

FIG. 1 is a schematic structural diagram of a locking quick connector according to an embodiment of the present invention.

The embodiment of the present invention is described in detail below in conjunction with FIG. 1: it includes the first sealing element 2 and the elastic device 3 arranged in the quick joint 1, and also includes the first sealing element 2 and the elastic device 3 arranged in the Between the second sealing element 4.

By connecting the second sealing element 4 with the elastic device 3, the reliability of the connection between the quick joint 1 and the connecting pipe is improved, and at the same time, the first sealing element 2 is not affected by other parts, which greatly provides the Describe the sealing effect of the quick connector 1.

In this embodiment, the first sealing element 2 and the second sealing element 4 may be sealing rings.

In this embodiment, the elastic device 3 may be a butterfly spring, a helical spring, or a ring spring.

Preferably, the elastic device 3 is a wave spring.

In this embodiment, it also includes a bushing 5 arranged in the quick joint 1 and connected to the second sealing element 4, a retaining sleeve 6 is arranged in the bushing 5, and a retaining sleeve 6 is arranged on the retaining sleeve 6 A locking member 61 is provided; the elastic device 3 is arranged in the bushing 5 and connected with the retaining sleeve 6 .

The use of the bushing 5 can enhance the reliability and strength of the connection between the pipe and the quick joint 1 .

By using the elastic device 3 to connect the retaining sleeve 6 and the second sealing element 4, the quick connector 1 is connected to the pipe and passed through water, and the elastic device 3 can buffer the retaining sleeve caused by changes in water pressure. 6 position changes, so as to slow down the movement between the pipe and the quick joint 1, improve the stability of the connection and the hydraulic pressure bearing capacity of the quick joint 1, and also improve the sealing effect of the quick joint 1.

In this embodiment, the cross section of the locking member 61 is circular.

The locking member 61 can be a spherical steel ball, a football-shaped steel ball, or a rigid ball of other materials.

When the cross section of the locking member 61 is circular, it is easier to lock the locking member 61 , the pipe and the inner wall of the quick connector 1 .

In this embodiment, the inner diameter of the bushing 5 gradually decreases towards the end of the nozzle of the quick connector 1 .

When the pipe is inserted into the quick joint 1, the pipe contacts the locking member 61 and moves the locking member 61 toward the inner wall of the bushing 5. When the pipe is about to withdraw from the quick joint 1, the pipe and the locking member 61 moves toward the mouth of the quick joint 1, but the inner diameter of the bushing 5 toward the mouth of the quick joint 1 gradually decreases, and the contact point between the locking member 61 and the pipe reaches When the sum of the distance between the locking member 61 and the contact point on the inner wall of the bushing 5 and the outer diameter of the interface is greater than the inner diameter of the bushing 5, the pipe is locked with the bushing 5, and when the pipe further exits the fast When the joint is 1, the locking line can be naturally produced, and the quick joint and the pipe are getting tighter and tighter.

In this embodiment, the inner diameter of the retaining sleeve 6 gradually decreases toward the end of the nozzle of the quick connector 1 .

The inner diameter of one end of the retaining sleeve 6 is gradually reduced to facilitate the relative movement between the retaining sleeve 6 and the bushing 5 .

In this embodiment, the outer wall of the quick connector 1 is provided with a first shoulder 11 and the second shoulder 12, and the inner wall of the quick connector 1 is provided with a first flange structure 13 connected with the first sealing element 2 And the second flange structure 14 connected with the second sealing element 4 .

Control the inner diameter tolerance of the first sealing element 2 and the second sealing element 4 at the inner wall of the quick joint 1 so that the first sealing element 2 and the second sealing element 4 form a certain compression ratio , when the pipe is inserted into the quick joint 1, under the protection of the joint, the pipe is not easily deformed, and the outer periphery is in close contact with the first sealing element 2 and the second sealing element 4, forming a wide sealing line, which is the seal A reliable guarantee is provided; the second flange structure 14 clamps the second sealing element 4, the second sealing element 4 clamps the elastic device 3, and the elastic device 3 is against the retaining sleeve 6 , so that the quick connector 1 can be more stably locked to take over.

In this embodiment, it also includes an unloading sleeve 7 , one end of the unloading sleeve 7 is arranged between the bushing 5 and the retaining sleeve 6 , and the other end extends out of the nozzle of the quick connector 1 .

When the pipe is to be exited from the quick joint 1, the unloading sleeve 7 is pushed to the inside of the bushing 5, and the retaining sleeve 6 is pushed to move to the inside of the quick joint 1, and the locking member 61 is no longer Extruded by the pipe material and the inner wall of the bushing 5, the pipe material can be withdrawn at this time.

In this embodiment, the inner wall of the quick connector 1 is further provided with a third flange structure 15 .

The third flange structure 15 is used to prevent pipes from continuing to enter the quick joint 1 .

The present invention provides a locking type quick joint 1, the quick joint 1 is connected with the elastic device 3 by adding a second sealing element 4, so as to improve the reliability of the connection between the quick joint 1 and the connecting pipe, and at the same time, make the second A sealing element 2 is not affected by other parts, which greatly improves the sealing effect of the quick joint 1 .

In the description of the present invention, the terms "setting", "connection" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or It is an indirect connection through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

Although some embodiments of the present invention have been given herein, those skilled in the art should understand that the embodiments herein can be changed without departing from the spirit of the present invention. The above-mentioned embodiments are only exemplary, and the embodiments herein should not be used as limitations on the scope of rights of the present invention.

Claims (7)

1. A locking quick joint, comprising a first sealing element and an elastic device arranged in the quick joint, characterized in that it also includes a first sealing element arranged between the first sealing element and the elastic device Two sealing elements, a bushing arranged in the quick joint and connected with the second sealing element, a retaining sleeve is arranged in the bushing, and a locking member is arranged on the retaining sleeve; the elastic device is provided In the bushing and connected with the retaining sleeve, the inner diameter of the bushing at one end of the quick connector nozzle gradually decreases, and the outer diameter of the retaining sleeve at the end of the quick connector nozzle gradually reduces . 2. The locking quick connector according to claim 1, wherein the elastic device is either a wave spring, a butterfly spring, a helical spring, or a ring spring. 3. The locking quick connector according to claim 1, wherein the first sealing element and the second sealing element are sealing rings. 4. The locking quick connector according to claim 1, characterized in that the section of the locking member is circular. 5. The locking quick connector according to claim 1, wherein the outer wall of the quick connector is provided with a first shoulder and a second shoulder, and the inner wall of the quick connector is provided with a A first flange structure connected to and a second flange structure connected to the second sealing element. 6. The lock-type quick connector according to claim 1, further comprising an unloading sleeve, one end of the unloading sleeve is arranged between the bush and the retaining sleeve, and the other end extends out of the The nozzle of the quick connector. 7. The locking quick connector according to claim 1, characterized in that, the inner wall of the quick connector is further provided with a third flange structure.