Pull-off valve dry connection

Abstract

The utility model discloses a kind of pull-off valve dry joints, including pipe body a, pipe body b, pipe body a is butt joint with pipe body b, pipe body a and pipe body b axial butt joint and are all provided with one-way cone valve in butt joint end, the other end of pipe body b is screw-connected and installed with connecting joint, connecting joint includes outer cylinder, the rear end of outer cylinder is equipped with concentric screw pipe part, the inner chamber of outer cylinder is equipped with circular push plate, push plate is equipped with axial through input pipe, the upper end of input pipe is closed and the upper portion side of input pipe is equipped with radial through input hole, the middle part of screw pipe part is equipped with concentric inner sleeve, input pipe is inserted into inner sleeve and is slidably connected with it, the inner end of inner sleeve is equipped with flange ring fixedly connected with the inner chamber of screw pipe part, the outside of input pipe is sleeved with spring a and spring a is located between flange ring and push plate. Connecting joint only opens after being inserted with male head on tank, can prevent internal residual material from flowing out, prevent pollution work environment, improve safety.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a breakaway valve dry connector. Background Technology

[0002] During the loading and unloading of fluid materials, the location of fluid storage devices often changes. For example, when a ship is unloading fluid materials at a dock, the dock remains stationary while the ship moves; similarly, when tank cars are loading and unloading fluid materials on roads or railways, the tank cars move while the fluid storage devices are either fixed or mobile. In these situations, the pipeline transporting the fluid materials can unexpectedly break, causing a leak. Breakaway valves, also known as emergency disconnect devices, prevent fluid leakage due to pipeline rupture. They automatically disconnect under certain external force, and both disconnected parts have a self-sealing function. Currently, the dry-type breakaway valve connectors used for tank car unloading are in an open state when not connected to the male connector on the tank car (although a switch valve is installed in the loading arm to close and restrict flow, there is still a distance between the switch valve and the outlet, allowing residual material to flow out). Therefore, when the gripping end moves, residual fluid material may flow out of the pipe, not only polluting the working environment but also potentially posing a safety hazard. Utility Model Content

[0003] The purpose of this invention is to provide a dry-type connector for a breakaway valve to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a breakaway valve dry connector, comprising a pipe body a and a pipe body b, each with a connecting flange at one end, and the two connecting flanges are connected by a breakaway bolt. Pipe body a and pipe body b are axially connected and each has a one-way cone valve at the connection end. The other end of pipe body b is screwed with a connecting connector, which includes an outer cylinder. The rear end of the outer cylinder has a concentric threaded tube section. The inner cavity of the outer cylinder has a circular push plate. The push plate has an axially penetrating input pipe. The upper end of the input pipe is closed, and the upper side of the input pipe has a radially penetrating input hole. The middle part of the threaded tube section has a concentric inner sleeve. The input pipe is inserted into the inner sleeve and slidably connected to it. The inner end of the inner sleeve has a flange ring fixedly connected to the inner cavity of the threaded tube section. A spring a is sleeved on the outside of the input pipe, and the spring a is located between the flange ring and the push plate. The lower inner wall of the outer cylinder has a pin for locking.

[0005] Preferably, the one-way cone valve includes a valve core and a disc-shaped mounting bracket. The mounting bracket is screwed into the inner cavity of pipe body a and pipe body b. A concentric insertion tube is provided in the middle of the mounting bracket. The insertion tube is inserted into the valve core and is adapted to slide and connect with it. A spring b is provided in the insertion tube. The spring b applies a thrust to the valve core to achieve sealing and closing. The two valve cores are arranged opposite to each other and abut against each other to achieve opening.

[0006] Preferably, the valve core has an extended push rod at its front end, and the two push rods are in contact at their ends and have a concave-convex structure for positioning and engaging.

[0007] Preferably, the input pipe has an annular groove on its outside and a sealing ring is snapped into the annular groove. The input pipe has a circular end plate for sealing, and the diameter of the circular end plate is not less than the outer diameter of the inner sleeve.

[0008] Compared with the prior art, the beneficial effects of this utility model are: the present utility model is provided with a connecting joint at the docking end, which will only open after being inserted with the male end on the tank, which can prevent the internal residual material from flowing out, prevent pollution of the working environment, and improve safety. Attached Figure Description

[0009] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0010] Figure 2 This is a side sectional view of the connector.

[0011] Figure 3 This is a schematic diagram of the main structure of this utility model.

[0012] In the diagram: 1. Pipe body a; 2. Pipe body b; 3. Mounting bracket; 4. Valve core; 5. Spring b; 6. Pull-out bolt; 7. Connecting joint; 71. Outer cylinder; 72. Push plate; 73. Input pipe; 74. Spring a; 75. Inner sleeve; 76. Input hole. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0014] Please see Figure 1-3This utility model provides a technical solution: a breakaway valve dry connector, including a pipe body a1 and a pipe body b2. One end of the pipe body a1 and the pipe body b2 are provided with a connecting flange, and the two connecting flanges are connected by a breakaway bolt 6. The pipe body a1 and the pipe body b2 are axially connected and both are provided with a one-way cone valve at the connection end. The other end of the pipe body b2 is screwed with a connecting connector 7. The other end of the pipe body a1 is provided with a flange for connecting to the output end of the loading arm.

[0015] The connecting joint 7 includes an outer cylinder 71. The rear end of the outer cylinder 71 is provided with a concentric threaded tube section, which is screwed to the end of the tube body b2. The inner cavity of the outer cylinder 71 is provided with a circular push plate 72. The push plate 72 is provided with an axially penetrating input pipe 73. The input pipe 73 is provided with a circular end plate for closure. The diameter of the circular end plate is not less than the outer diameter of the inner sleeve 75. The upper side of the input pipe 73 is provided with a radially penetrating input hole 76. The input pipe 73 extends upward so that the input hole 76 is only open when it is higher than the end of the inner sleeve 75. The middle part of the spiral tube is provided with a concentric inner sleeve 75. The input tube 73 is inserted into the inner sleeve 75 and is slidably connected to it. The outside of the input tube 73 is provided with an annular groove and a sealing ring is snapped into the annular groove. The inner end of the inner sleeve 75 is provided with a flange ring that is fixedly connected to the inner cavity of the spiral tube. The outside of the input tube 73 is sleeved with a spring a74 and the spring a74 is located between the flange ring and the push plate 72. The lower inner wall of the outer cylinder 71 is provided with a pin for snapping. The pin is used to snap with the male end when mating. When it is inserted with the male end, the push plate 72 is pushed upward and the input hole 76 extends out of the inner sleeve 75 to achieve conduction. In this way, it is in a closed state when not inserted, which can prevent the dripping of residual material inside.

[0016] The one-way cone valve includes a valve core 4 and a disc-shaped mounting bracket 3. The mounting bracket 3 is screwed into the inner cavity of pipe body a1 and pipe body b2. A concentric insertion tube is located in the middle of the mounting bracket 3. The insertion tube is inserted into and slidably connected to the valve core 4. A spring b5 is located in the insertion tube. The spring b5 applies a thrust to the valve core 4 to achieve sealing and closure. The two valve cores 4 are arranged opposite each other and pressed against each other to achieve opening. An extended push rod is located at the front end of the valve core 4. The two push rods contact at their ends and have a concave-convex structure for positioning and locking. When broken (i.e., pipe body a1 separates from pipe body b2), the balance of the two valve cores 4 pressing against each other is disrupted, and the spring b5 pushes the valve core 4 to close.

[0017] Working principle: When in use, this device is installed at the end of the loading arm. The connecting connector 7 is used to mate with the male connector on the top of the tank. When the male connector is inserted, the push plate 72 is lifted, and the upper end of the input pipe 73 extends out of the inner sleeve 75 to open and conduct the connection. Therefore, when not connected, the connecting connector 7 remains closed and sealed, which can prevent the internal residual material from flowing out.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A breakaway valve dry connector, comprising a pipe body a (1) and a pipe body b (2), wherein one end of each of the pipe body a (1) and the pipe body b (2) is provided with a connecting flange, and the two connecting flanges are connected by a breakaway bolt (6), the pipe body a (1) and the pipe body b (2) are axially connected and each is provided with a one-way cone valve at the connection end, characterized in that: The other end of the tube body b (2) is screwed with a connecting joint (7), which includes an outer cylinder (71). The rear end of the outer cylinder (71) is provided with a concentric threaded tube section. The inner cavity of the outer cylinder (71) is provided with a circular push plate (72). The push plate (72) is provided with an axially penetrating input pipe (73). The upper end of the input pipe (73) is closed, and the upper side of the input pipe (73) is provided with a radially penetrating input hole. 76), the middle part of the spiral tube is provided with a concentric inner sleeve (75), the input tube (73) is inserted into the inner sleeve (75) and is adapted to slide and connected with it, the inner end of the inner sleeve (75) is provided with a flange ring fixedly connected to the inner cavity of the spiral tube, the outside of the input tube (73) is sleeved with a spring a (74) and the spring a (74) is located between the flange ring and the push plate (72), and the lower inner wall of the outer cylinder (71) is provided with a pin for snapping.

2. The dry-type connector for a breakaway valve according to claim 1, characterized in that: The one-way cone valve includes a valve core (4) and a disc-shaped mounting bracket (3). The mounting bracket (3) is screwed into the inner cavity of the pipe body a (1) and the pipe body b (2). The mounting bracket (3) has a concentric insertion tube in the middle. The insertion tube is inserted into the valve core (4) and is adapted to slide in a sliding connection with it. The insertion tube is provided with a spring b (5). The spring b (5) applies a thrust to the valve core (4) to achieve sealing and closing. The two valve cores (4) are arranged opposite to each other and abut against each other to achieve opening.

3. A breakaway valve dry connector according to claim 2, characterized in that: The valve core (4) has an extended push rod at its front end, and the two push rods are in contact at their ends and have a concave-convex structure for positioning and locking.

4. A breakaway valve dry connector according to claim 1, characterized in that: The input tube (73) has an annular groove on its outside and a sealing ring is snapped into the annular groove. The input tube (73) has a circular end plate for sealing. The diameter of the circular end plate is not less than the outer diameter of the inner sleeve (75).

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