CN111486283A

CN111486283A - Quick connector

Info

Publication number: CN111486283A
Application number: CN202010476574.1A
Authority: CN
Inventors: 王志华; 杨俊立; 段晓勇
Original assignee: Qianjiang Yongan Pharmaceutical Co Ltd
Current assignee: Qianjiang Yongan Pharmaceutical Co Ltd
Priority date: 2020-05-29
Filing date: 2020-05-29
Publication date: 2020-08-04

Abstract

The invention relates to a quick connector which comprises a female end connector connected with a loading and unloading vehicle pipeline and a male end connector connected with a tank car, wherein the female end connector is provided with a connecting pipe in threaded connection with the loading and unloading vehicle pipeline at the end part connected with the loading and unloading vehicle pipeline, the other end of the connecting pipe is in threaded connection with a plug valve, a safety ring in sliding fit with the connecting pipe is sleeved on the connecting pipe, one end of the safety ring is provided with a first locking part forming locking with a valve handle of the plug valve, and the other end of the safety ring is provided with a second locking part forming locking with a pull rod of the female end connector. According to the technical scheme, the plug valve can be in a closed state when the pull rod of the female end connector is not fastened through leftward sliding of the safety ring, so that leakage is avoided; through the right sliding of the safety ring, the female end joint after being fastened can be locked, and the connection failure of the female end joint and the male end joint is avoided.

Description

Quick connector

Technical Field

The invention relates to the field of chemical mechanical equipment, in particular to a quick connector which is mainly used for a loading and unloading vehicle for liquid-phase or gas-phase materials.

Background

The production process of chemical enterprises basically has the operation procedures of loading and unloading liquid-phase or gas-phase materials. It is a common method to use quick connectors to connect material handling tankers to the truck pipes during the loading and unloading process.

The quick joint used for loading and unloading operation is generally an A-type quick joint which meets the national standard GB/T16693 and 1996 hose quick joint. The A-type quick joint is formed by combining two parts, namely an A-1 type female quick joint and an A-2 type male quick joint. The two connectors are respectively arranged on a loading and unloading vehicle pipeline and a tank car. When the quick connector is used, the A-2 type male end quick connector is inserted into the A-1 type female end quick connector to the correct position, then the A-1 type female end quick connector pull rod is fastened, connection is completed, and the connection can be disconnected by carrying out reverse operation.

The quick connector can realize the connection and disconnection of pipelines without using tools, the operation steps are simple and clear, time and labor are saved during operation, but in actual use, as the pull rod of the A-1 type female end quick connector is not locked, when the quick connector is not fastened completely or the pipeline shakes, the pull rod is easy to loosen and cause connection failure, so that a large amount of material leakage is caused, and safety accidents are caused.

Disclosure of Invention

The invention aims to provide a quick connector which can lock a pull rod of a female connector and prevent pipeline connection failure or leakage.

In order to achieve the purpose, the invention adopts the following technical scheme: the safety lock comprises a female end joint connected with a loading and unloading vehicle pipeline and a male end joint connected with a tank car, wherein the female end joint is provided with a connecting pipe in threaded connection with the loading and unloading vehicle pipeline at the end part connected with the loading and unloading vehicle pipeline, the other end of the connecting pipe is in threaded connection with a plug valve, a safety ring in sliding fit with the connecting pipe is sleeved on the connecting pipe, one end of the safety ring is provided with a first locking part forming locking with a valve handle of the plug valve, the other end of the safety ring is provided with a second locking part forming locking with a pull rod of the female end joint, and when the first locking part and the valve handle of the plug valve are locked, the second locking part and the pull rod of the female end joint are in a separation state; when the safety ring slides to the female end joint end and the pull rod of the female end joint is locked, the first locking part is separated from the valve handle of the plug valve.

The hole of safety ring is including the first inner bore section, second inner bore section and the third inner bore section that set gradually, wherein: the first inner hole section is matched with the plug valve, the first locking part is a square notch formed along the hole wall of the first inner hole section, and the square notch is clamped with a valve handle of the plug valve to form locking; the second inner hole section is in sliding fit with the connecting pipe; the third inner hole section is a second locking part matched with the pull rod of the female end joint for locking, and the third inner hole section is sleeved on the pull rod of the female end joint after being fastened to form locking.

The length of the safety ring is 10-20 mm longer than that of the connecting pipe.

According to the technical scheme, the plug valve can be in a closed state when the pull rod of the female end connector is not fastened through leftward sliding of the safety ring, so that leakage is avoided; through the right sliding of the safety ring, the female end joint after being fastened can be locked, and the connection failure of the female end joint and the male end joint is avoided.

Drawings

FIG. 1 is a schematic view of the valve handle of the plug valve of the present invention shown in the locked configuration;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic view of the female coupling of the present invention with the pull rod locked;

FIG. 4 is a top view of FIG. 3;

fig. 5 is a schematic view of the construction of the safety ring of the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

the quick coupling shown in fig. 1 to 4 comprises a female coupling 1 connected to a pipe of a loading and unloading vehicle and a male coupling 2 connected to a tank car, wherein the female coupling 1 is provided with a connecting pipe 3 in threaded connection with the pipe of the loading and unloading vehicle at the end connected to the pipe of the loading and unloading vehicle, the other end of the connecting pipe 3 is in threaded connection with a plug valve 4, the plug valve 4 is in threaded connection with the pipe of the loading and unloading vehicle, and the connecting pipe 3 is sleeved with a safety ring 5 which forms sliding fit with the connecting pipe. Namely, the tail end of the female end joint 1 is connected with a plug valve 4 through a connecting pipe 3, and a safety ring 5 capable of sliding left and right is sleeved on the connecting pipe 3 between the plug valve 4 and the female end joint 1. The one end of safety ring 5 is equipped with the first locking portion that forms the locking with the valve handle 41 of plug valve, the other end of safety ring 5 is equipped with the second locking portion that forms the locking with the pull rod 11 that the female end connects, safety ring 5 slides to the valve handle 41 of first locking portion and plug valve when locking mutually to 4 ends of plug valve, second locking portion is in the off-state with the pull rod 11 that the female end connects, when safety ring slides to the pull rod 11 looks locking that second locking portion and female end connect to 1 end of female end connection, the valve handle 41 of first locking portion and plug valve is in the off-state. Namely, when the safety ring 5 slides to the end of the plug valve 4 and the first locking part is clamped with the valve handle 41 of the plug valve, the pull rod 11 of the female end connector is in a free state; when the safety ring 5 slides towards the end of the female end joint 1 and the second locking part is locked with the pull rod of the female end joint, the valve handle of the plug valve is in a free state.

Specifically, as shown in fig. 5, the inner hole of the safety ring 5 includes a first inner hole section 51, a second inner hole section 52 and a third inner hole section 53, which are sequentially arranged, wherein: the first inner hole section 51 is matched with the plug valve 4, the first locking part is a square notch 511 formed along the hole wall of the first inner hole section, and the square notch 511 is clamped with the valve handle 41 of the plug valve to form locking; the second inner bore section 52 forms a sliding fit with the connecting tube 3; the third inner hole section 53 is a second locking part which is matched with the pull rod 11 of the female end joint for locking, and the third inner hole section 53 is sleeved on the fastened pull rod 11 of the female end joint to form locking. Preferably, the length of the safety ring 5 is 10-20 mm longer than that of the connecting pipe.

The working principle and the working process of the invention are as follows:

as shown in figures 1 and 2, the safety ring is firstly slid to the valve end of the plug valve, the square notch of the first locking portion is clamped with the valve handle of the plug valve, the plug valve is in a closed state at the moment, the valve handle of the plug valve cannot be rotated to be opened, and the plug valve can be effectively prevented from being opened by misoperation of an operator to cause leakage. As shown in fig. 3 and 4, the male end connector is inserted into the female end connector to a proper position, the pull rod of the female end connector is fastened, the safety ring slides towards the female end connector, so that the third inner hole section of the connecting pipe is sleeved on the pull rod of the female end connector, and the pull rod is locked; at this time, the male end fitting and the female end fitting are completely combined, and the pull rod of the female end fitting is fastened and locked, so that leakage cannot occur. Meanwhile, in the process that the safety ring moves towards the female end connector, the valve handle of the plug valve is released, the plug valve can be opened by rotating the valve handle of the plug valve, so that a loading and unloading vehicle pipeline is communicated with a tank car, and the phenomenon that a pull rod of the female end connector is not completely fastened or the connection failure is caused by the loosening of the pull rod when the pipeline shakes can be effectively avoided.

In conclusion, the quick connector solves the problem of loosening and leakage of the connector caused by the fact that the quick connector is not provided with the pull rod locking device, and also avoids the problem of leakage caused by misoperation of operators. The invention has simple integral structure and easy operation, and inherits the advantages of the quick connector.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a quick-operation joint, includes female end joint (1) that links to each other with the loading and unloading car pipeline and male end joint (2) that link to each other with the tank wagon, its characterized in that: female end joint (1) be equipped with rather than threaded connection's connecting pipe (3) at the tip that links to each other with the loading and unloading car pipeline, the other end threaded connection of connecting pipe (3) has plug valve (4), connecting pipe (3) go up the cover be equipped with rather than forming sliding fit's safety ring (5), the one end of safety ring (5) is equipped with the first locking portion that forms the locking with valve handle (41) of plug valve, the other end of safety ring (5) is equipped with the second locking portion that forms the locking with pull rod (11) that female end connects, safety ring (5) when sliding to first locking portion and valve handle (41) looks locking of plug valve to plug valve (4) end, second locking portion is in the off-state with pull rod (11) that female end connects; when the safety ring slides to the end of the female end connector (1) and the second locking part is locked with the pull rod (11) of the female end connector, the first locking part is separated from a valve handle (41) of the plug valve.

2. The quick connector of claim 1, wherein: the hole of safety ring (5) is including first hole section (51), second hole section (52) and third hole section (53) that set gradually, wherein: the first inner hole section (51) is matched with the plug valve (4), the first locking part is a square notch (511) formed along the hole wall of the first inner hole section, and the square notch (511) is clamped with a valve handle (41) of the plug valve to form locking; the second inner hole section (52) is in sliding fit with the connecting pipe (3); the third inner hole section (53) is a second locking part which is matched with the pull rod (11) of the female end joint for locking, and the third inner hole section (53) is sleeved on the pull rod (11) of the female end joint after being fastened to form locking.

3. The quick connector of claim 1, wherein: the length of the safety ring (5) is 10-20 mm longer than that of the connecting pipe.