Falling-off self-closing quick connector

Abstract

The utility model provides a falling-off self-closing quick connector which comprises a connector body, the side wall of the connector body is rotationally connected with a pulling handle, an arc-shaped protrusion is arranged at the end of the pulling handle and extends into the connector body, and when a male head is arranged at the end of the connector body in a penetrating mode, the arc-shaped protrusion is matched in a groove preset in the side wall of the male head in a locking state. A rear guide ring is fixedly connected into the connector body, a shaft is arranged in the middle of the rear guide ring in a penetrating mode, a valve clack is fixedly connected to the shaft, a spring is connected to the shaft in a sleeving mode, and one end of the spring abuts against the rear guide ring and the valve clack at the other end to force the valve clack to move towards the male head and make contact with the inner wall of the connector body. A locking sleeve is movably arranged at the rear end of the connector body, and in the locking state, one end of the pulling handle is arranged in the locking sleeve in a matched mode. Quick connection can be achieved, meanwhile, the valve clack, the locking sleeve and other structures are arranged, connection stability is ensured, and after accidental tripping, automatic plugging of the connector can be ensured through the arrangement of the valve clack.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, in particular to a detachable self-closing quick connector. Background Art

[0002] A joint is a component used to connect pipes. Pipe joints can be divided into: external threaded end joints, ferrule joints, and self-fixing joints according to their usage.

[0003] Existing connectors are relatively simple and easy to use, but they cannot achieve both connection speed and connection stability. For example, the threaded connection method is slow, and the snap-on type is easily affected by vibration and other factors, causing it to fall off. Summary of the Invention

[0004] In order to solve the above problems, the present invention discloses a detachable self-closing quick connector, comprising a connector body, wherein the side wall of the connector body is rotatably connected to a lever, and the end of the lever is provided with an arc-shaped protrusion extending into the interior of the connector body. When a male head is inserted into the end of the connector body, the arc-shaped protrusion fits into a groove preset in the side wall of the male head in a locked state. The technology of this solution is a female head of a connector, which cooperates with a preset male head to achieve a quick connection of the pipeline. When in use, it is necessary to rotate the lever in advance so that one end of the lever is not in the connector body. At this time, the male head is inserted into the connector body, and then the lever is rotated to reset. Its arc-shaped protrusion fits into the groove on the side wall of the male head, achieving a quick connection between the female head and the male head.

[0005] A rear guide ring is fixedly connected to the interior of the connector body. A shaft is inserted through the middle of the rear guide ring, and a valve disc is fixedly connected to the shaft. A spring is sleeved on the shaft, with one end of the spring pressing against the rear guide ring and the other end against the valve disc, forcing the valve disc toward the male connector and into contact with the inner wall of the connector body. Under the action of the spring, the valve disc and the connector body are in contact and sealed, effectively blocking the female connector. With the cooperation of the male connector, the end of the male connector pushes the shaft to move, causing the valve disc and the connector body to move away, thus connecting the female connector.

[0006] The rear end of the connector body is movably provided with a locking sleeve. In the locked state, one end of the lever fits inside the locking sleeve. That is, the locking sleeve is sleeved on the end of the lever to prevent the lever from rotating, so that the male and female connectors are separated.

[0007] Preferably, a guide post is fixedly connected to the side wall of the connector body, the locking sleeve is provided with a C-shaped opening, and the guide post fits within the C-shaped opening. A locking bolt is threadedly connected to the side wall of the locking sleeve. Whether the locking sleeve is engaged with the end of the lever is determined by controlling the locking sleeve to rotate and move axially according to the fit between the guide post and the C-shaped opening, while the locking bolt is tightened against the connector body to secure the locking sleeve.

[0008] Preferably, a leading ring is provided inside the connector body, and the shaft passes through the middle of the leading ring, and the valve disc is located between the leading ring and the rear guide ring. Adding the leading ring improves the axial stable sliding of the shaft and the valve disc.

[0009] Preferably, the end of the shaft is sleeved and fixedly connected with a pressure ring, and both ends of the shaft are interspersed with cotter pins. When the male head is engaged, its front end abuts against the pressure ring to achieve axial movement of the shaft and the valve disc.

[0010] Preferably, one end of the connector body is fixedly connected to a copper ring, and the other end of the connector body is fixedly connected to a connecting pipe. The copper ring plays a role in wear resistance, while the connecting pipe is fixed by a flange, bolts or other structures.

[0011] Preferably, a cap nut and a locking pin are inserted into the end of the rotating connection of the handle, and a pull ring is provided in the middle of the handle to facilitate the rotation of the handle.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. A lever is provided, and the male connector is inserted into the connector body, and then the lever is turned to fix the male connector, thus achieving quick connection.

[0014] 2. It is equipped with a locking sleeve, a guide column, a C-shaped opening, a locking bolt and other structures. In the locked state, the locking sleeve will accommodate the end of the lever to prevent the lever from rotating and causing the male head to detach, which greatly improves the stability of the connection.

[0015] 3. Equipped with shaft, valve disc, spring and other structures, even if the male head is detached, it can ensure the sealing of the female head and avoid the overflow of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the locking state of the present invention;

[0017] Figure 2 It is a three-dimensional schematic diagram of the open state of the present invention;

[0018] Figure 3 It is a cross-sectional schematic diagram of the present invention.

[0019] List of reference numerals:

[0020] 101. Handle; 102. Pull ring; 103. Nut with cap; 104. Locking pin; 201. Copper ring; 202. Connector body; 203. Locking sleeve; 204. Connecting pipe; 205. Locking bolt; 206. Guide column; 301. Shaft; 302. Pressing ring; 303. Front guide ring; 304. Valve disc; 305. Spring; 306. Rear guide ring; 307. Split pin. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0022] like Figures 1 to 3 As shown, a detachable self-closing quick connector includes a connector body 202, the side wall of the connector body 202 is rotatably connected to the handle 101, and the end of the handle 101 is provided with an arc-shaped protrusion extending to the interior of the connector body 202. When a male head is inserted into the end of the connector body 202, in the locked state, the arc-shaped protrusion fits into the preset groove on the side wall of the male head, that is, the handle 101 is rotated to make one end of it move away from the connector body 202, which is now in the open state. When the male head is inserted and the handle 101 is reset, it is in the reduced diameter state.

[0023] The interior of the connector body 202 is fixedly connected to a rear guide ring 306, and a shaft 301 is inserted into the middle of the rear guide ring 306. The rear guide ring 306 is used to support the shaft 301. A valve flap 304 is fixedly connected to the shaft 301, and a spring 305 is sleeved on the shaft 301. One end of the spring 305 presses against the rear guide ring 306 and the other end presses against the valve flap 304, forcing the valve flap 304 to move toward the male head and contact the inner wall of the connector body 202. When the valve flap 304 contacts the inner wall of the connector body 202, the female head is in a blocked state. Even if the male head accidentally falls off, it will not cause overflow of the material. Under the cooperation of the male and female heads, the male head will press against the shaft 301 and push when inserted, so that the valve flap 304 does not contact the connector body 202, that is, the female head is in an open state.

[0024] The rear end of the connector body 202 is movably provided with a locking sleeve 203. In the locked state, one end of the lever 101 fits inside the locking sleeve 203. That is, in the locked state, the locking sleeve 203 moves and sleeves the lever 1-2 inside, preventing the female and male connectors from accidentally falling off, greatly improving the stability of the connection.

[0025] The side wall of the connector body 202 is fixedly connected with a guide post 206, and a C-shaped opening is opened on the locking sleeve 203, and the guide post 206 cooperates with the C-shaped opening. That is, when the reducing sleeve 203 moves, it needs to rotate and axially rotate according to the cooperation between the C-shaped opening and the guide post 206 to prevent the locking sleeve 203 from directly moving axially, thereby improving the stability of the connection. The side wall of the locking sleeve 203 is threadedly connected with a locking bolt 205. When the bolt 205 is tightened, its end is fixed to the side wall of the connector body 202 to fix the locking sleeve 203 and prevent the locking sleeve 203 from being separated from the handle 101.

[0026] A leading ring 303 is provided inside the joint body 202 , and the shaft 301 passes through the middle of the leading ring 303 . The leading ring 303 cooperates with the rear guide ring 306 to improve the stable support of the shaft 301 . The valve disc 304 is located between the leading ring 303 and the rear guide ring 306 .

[0027] The end of the shaft 301 is fixedly connected with a pressure ring 302. When the male head is engaged, its front end presses against the pressure ring 302, so that the shaft 301 moves. At the same time, the pressure ring 302, the front guide ring 303 and the rear guide ring 306 have similar structures. They are all circular plates, and fan-shaped through holes are opened on the plates. Split pins 307 are inserted at both ends of the shaft 301, and the split pins 307 are used for fixing and limiting.

[0028] One end of the joint body 202 is fixedly connected to a copper ring 201. The copper ring 201 has high wear resistance and is installed at the front end of the joint body 202 to greatly improve the wear resistance. The other end of the joint body 202 is fixedly connected to a connecting pipe 204. The connection between the joint body 202 and the connecting pipe 204 is achieved through structures such as flanges and bolts.

[0029] A cap nut 103 and a locking pin 104 are inserted into the end of the rotating connection of the handle 101. The cap nut 103 serves as the axis of the rotating connection of the handle 101, and the locking pin 104 prevents the cap nut 103 from detaching. A pull ring 102 is provided in the middle of the handle 101, which makes it more convenient to hold and rotate the handle 101.

[0030] The technical means disclosed in the solution of the present invention are not limited to the technical means disclosed in the above-mentioned embodiment, but also include technical solutions composed of any combination of the above technical features.

Claims

1. A self-closing quick connector, characterized in that: The invention comprises a connector body (202), wherein the side wall of the connector body (202) is rotatably connected to a lever (101), and the end of the lever (101) is provided with an arc-shaped protrusion extending into the interior of the connector body (202); when a male head is inserted into the end of the connector body (202), the arc-shaped protrusion fits into a groove preset in the side wall of the male head in a locked state; The interior of the connector body (202) is fixedly connected to a rear guide ring (306), a shaft (301) is inserted through the middle of the rear guide ring (306), a valve flap (304) is fixedly connected to the shaft (301), a spring (305) is sleeved on the shaft (301), and one end of the spring (305) presses against the rear guide ring (306), and the other end presses against the valve flap (304), forcing the valve flap (304) to move toward the male end and contact the inner wall of the connector body (202); A locking sleeve (203) is movably provided at the rear end of the joint body (202); in a locked state, one end of the lever (101) fits inside the locking sleeve (203).

2. The self-closing quick connector according to claim 1, characterized in that: A guide post (206) is fixedly connected to the side wall of the joint body (202), a C-shaped opening is provided on the locking sleeve (203), and the guide post (206) fits in the C-shaped opening, and a locking bolt (205) is threadedly connected to the side wall of the locking sleeve (203).

3. The self-closing quick connector according to claim 1, characterized in that: A leading ring (303) is provided inside the joint body (202), and the shaft (301) passes through the middle of the leading ring (303), and the valve flap (304) is located between the leading ring (303) and the rear guide ring (306).

4. The self-closing quick connector according to claim 3, characterized in that: The end of the shaft (301) is sleeve-fixedly connected with a pressure ring (302), and both ends of the shaft (301) are provided with cotter pins (307).

5. The self-closing quick connector according to claim 1, characterized in that: One end of the joint body (202) is fixedly connected to a copper ring (201), and the other end of the joint body (202) is fixedly connected to a connecting pipe (204).

6. The self-closing quick connector according to claim 1, characterized in that: A cap nut (103) and a locking pin (104) are inserted through the end of the rotating connection of the lever (101), and a pull ring (102) is provided in the middle of the lever (101).

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