Liquefied gas tank car loading and unloading quick connector

Abstract

The utility model discloses a liquefied gas tank truck loading and unloading quick connector, and relates to the technical field of tank truck loading and unloading. The device comprises a connector, an input pipe is connected to the right side of the connector in an inserted mode, a rotating hole is formed in the side wall of the connector, a control valve is rotationally connected to the inner wall of the rotating hole, and a rotating handle is fixedly connected to the side, away from the connector, of the control valve. According to the utility model, the quick connecting assembly is arranged, specifically, when the limiting block is driven by the joint to the position of the arc-shaped concave groove of the limiting ring, the limiting block is pushed towards the direction of the limiting ring by the elastic force generated by the spring, the rotating ring is in contact with the inserting rod during rotation, and at the moment, the rotating ring generates thrust to the inserting rod; the rotating ring pushes the inserting rod to enable the limiting block to be fixed to the position of the arc-shaped concave face of the limiting ring, so that the connector and the input pipe are connected and fixed, the connecting mode is rapid and convenient, rapid connection and disconnection can be achieved, the assembling and disassembling time is greatly shortened, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of tanker loading and unloading technology, and in particular relates to quick couplings for loading and unloading liquefied gas tankers. Background Technology

[0002] In my country, liquefied gas is mainly transported by tank trucks. Currently, the loading and unloading of liquefied gas adopts a loading and unloading method in which the front end of the loading arm is connected to a flip-lock and locked. The loading arm is connected to the tank truck through a joint, ball valve and locked, and the tank truck opening is used for loading and unloading.

[0003] When filling tank trucks with liquefied gas, it is necessary to ensure that the filling connector and the connection between the tank truck are firmly sealed. This may require more complex connection methods, which may be more prone to leakage during the connection process and consume a lot of time. This affects the working effect of filling liquefied gas. Therefore, we have proposed a quick-connect coupling for liquefied gas tank trucks. Utility Model Content

[0004] The purpose of this invention is to provide a quick connector for loading and unloading liquefied gas tank trucks. By setting up quick-connect components, the connection method is quick and convenient, enabling rapid connection and disconnection, thereby significantly shortening loading and unloading time and improving work efficiency. It solves the problem that existing connection methods use more complex methods, which may be more prone to leakage during the connection process and require a lot of time to connect, thus affecting the working effect of filling liquefied gas.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is a quick connector for loading and unloading liquefied gas tank trucks, including a connector with an input pipe inserted into the right side. The side wall of the connector has a rotating hole, and a control valve is rotatably connected to the inner wall of the rotating hole. A handle is fixedly connected to the control valve on the side away from the connector. During the transportation of liquefied gas, rotating the handle controls the control valve. When the tank is filled, the internal pressure will follow the filling. The control valve can control the gas pressure by adjusting its opening to ensure stable gas transmission.

[0007] A quick-connect assembly is provided on the side of the connector near the input pipe. The quick-connect assembly includes a swivel ring threaded onto the outer surface of the connector. Several sliding holes are provided on the side wall of the connector. Insert rods are slidably connected to the inner walls of the sliding holes. Limiting blocks are fixedly connected to the side of the insert rods away from the swivel ring. Springs are fitted on the outer surfaces of the insert rods. The swivel ring pushes the insert rods to fix the limiting blocks at the position of the arc-shaped concave surface of the limiting ring, thereby fixing the connector to the input pipe. This connection method is quick and convenient, enabling rapid connection and disconnection, thus significantly shortening the loading and unloading time and improving work efficiency.

[0008] The ends of several springs away from the connector are fixedly connected to the side of the limiting block near the connector. A limiting ring is fixedly connected to the outer surface of the input tube. The side of the limiting ring near the connector is inclined. Therefore, as the connector continues to push, the limiting block is squeezed by the limiting ring and moves away from the limiting ring, thereby causing the spring to generate elastic force due to the compression of the limiting block.

[0009] Furthermore, the outer surface of the limiting ring is arc-shaped and concave, and the side of each of the limiting blocks near the limiting ring is semi-arc-shaped. The semi-arc shape of the limiting blocks facilitates installation and disassembly, and prevents them from contacting and getting stuck with the limiting ring during movement, thus preventing them from detaching from the limiting ring.

[0010] Furthermore, the outer surface of the rotating ring is provided with striped grooves, the side of the rotating ring near the insert rod is inclined, and the side of several insert rods near the rotating ring is an arc surface. The surface of the rotating ring is provided with stripes, and the stripes make it easier for the operator to rotate the rotating ring.

[0011] Furthermore, the inner wall of the connector is provided with a sealing groove, and a number of spring pieces are fixedly connected to the inner wall of the sealing groove. A sealing ring is fixedly connected to the side of the spring pieces away from the sealing groove. Under pressure, the spring pieces generate a thrust on the sealing ring, so that the sealing ring is tightly attached to the end of the input pipe, thereby ensuring the sealing of the connection between the connector and the input pipe and avoiding liquid leakage during the transportation process.

[0012] Furthermore, the side of the sealing ring near the input pipe is a concave surface, and the concave surface of the input pipe near the input pipe fits against the end of the input pipe. The fitting of the sealing ring with the end of the input pipe can increase the sealing of the connection point.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model, by setting a quick-connect component, specifically, when the limiting block is driven by the connector to the position of the arc-shaped recessed groove of the limiting ring, the limiting block is pushed towards the limiting ring by the elastic force generated by the spring. At this time, the rotating ring is rotated clockwise, and the rotating ring will contact the insertion rod when rotating. The surface of the insertion rod is arc-shaped. At this time, the rotating ring will generate a pushing force on the insertion rod. The rotating ring pushes the insertion rod to fix the limiting block at the position of the arc-shaped recessed surface of the limiting ring, thereby fixing the connector and the input pipe in a fixed connection. This connection method is quick and convenient, and can realize quick connection and disconnection, thereby greatly shortening the loading and unloading time and improving work efficiency.

[0015] 2. This utility model uses a sealing ring. Specifically, because the connector is fixedly connected to the input pipe, the spring sheet under pressure exerts a thrust on the sealing ring, so that the sealing ring is tightly attached to the end of the input pipe, thereby ensuring the sealing of the connection between the connector and the input pipe and preventing liquid leakage during transportation.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the control valve structure of this utility model;

[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram of A in the middle;

[0021] Figure 4 This is a schematic diagram of the sliding hole structure of this utility model;

[0022] Figure 5 This utility model Figure 4 A magnified schematic diagram of the structure of B in the middle.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Connector; 101. Input pipe; 102. Throttle; 103. Control valve; 104. Sliding hole; 105. Limiting ring; 2. Quick-connect assembly; 201. Rotary ring; 202. Limiting block; 203. Insert rod; 204. Spring; 301. Sealing ring; 302. Spring sheet. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0026] Please see Figure 1-5 As shown, this utility model is a quick connector for loading and unloading liquefied gas tank trucks, including connector 1. An input pipe 101 is inserted into the right side of connector 1. A rotating hole is formed on the side wall of connector 1. A control valve 103 is rotatably connected to the inner wall of the rotating hole. A handle 102 is fixedly connected to the side of control valve 103 away from connector 1.

[0027] A quick-connect assembly 2 is provided on the side of connector 1 near the input pipe 101. The quick-connect assembly 2 includes a rotating ring 201 threaded onto the outer surface of connector 1. Several sliding holes 104 are formed on the side wall of connector 1. Insert rods 203 are slidably connected to the inner walls of each sliding hole 104. Limit blocks 202 are fixedly connected to the side of each insert rod 203 away from the rotating ring 201. Springs 204 are fitted onto the outer surfaces of each insert rod 203. Specifically, by providing the quick-connect assembly 2, when the limit block 202 is moved by connector 1 to the position of the arc-shaped recessed groove of the limit ring 105, the limit block 202... The spring force generated by the spring 204 pushes the limiting ring 105 towards the limiting ring. At this time, the rotating ring 201 is rotated clockwise. When the rotating ring 201 rotates, it will contact the insertion rod 203. The surface of the insertion rod 203 is arc-shaped. At this time, the rotating ring 201 will generate a pushing force on the insertion rod 203. The rotating ring 201 pushes the insertion rod 203 to fix the limiting block 202 in the position of the arc-shaped concave surface of the limiting ring 105, thereby connecting and fixing the connector 1 to the input pipe 101. This connection method is quick and convenient, and can realize rapid connection and disconnection, thereby greatly shortening the loading and unloading time and improving work efficiency.

[0028] Several springs 204 are fixedly connected at the ends away from the connector 1 to the side of the limiting block 202 near the connector 1, and a limiting ring 105 is fixedly connected to the outer surface of the input pipe 101.

[0029] The outer surface of the limiting ring 105 is arc-shaped and concave, and the side of each of the limiting blocks 202 near the limiting ring 105 is semi-arc.

[0030] The outer surface of the swivel ring 201 is provided with striped grooves. The side of the swivel ring 201 near the insertion rod 203 is a bevel, and the side of several insertion rods 203 near the swivel ring 201 is a rounded surface.

[0031] The inner wall of the connector 1 is provided with a sealing groove, and several spring pieces 302 are fixedly connected to the inner wall of the sealing groove. A sealing ring 301 is fixedly connected to the side of the several spring pieces 302 away from the sealing groove.

[0032] The sealing ring 301 has a concave surface on the side near the input pipe 101. The concave surface of the input pipe 101 is in contact with the end of the input pipe 101. By setting the sealing ring 301, specifically because the connector 1 is connected and fixed to the input pipe 101, the spring 302 under pressure generates a thrust on the sealing ring 301, so that the sealing ring 301 is tightly attached to the end of the input pipe 101, thereby ensuring the sealing of the connection between the connector 1 and the input pipe 101 and avoiding liquid leakage during the transportation process.

[0033] A specific application of this embodiment is as follows: Connect connector 1 to an output pipe containing liquefied gas, insert connector 1 into the end of input pipe 101, and provide a sealing ring 301 at the end of connector 1 near input pipe 101. When the sealing ring 301 is driven by connector 1 to contact the opening of input pipe 101, during the process of the sealing ring 301 being pushed and squeezed against input pipe 101, the sealing ring 301 is squeezed through the spring 302 connected to connector 1. At the same time as the sealing ring 301 contacts input pipe 101, the limiting block 202 contacts the limiting ring 105. Since the outer surface of the limiting ring 105 is a beveled arc, as connector 1 continues to push, the limiting block 202 is squeezed by the limiting ring 105 and moves away from the limiting ring 105, thereby causing the spring 204 to be controlled by the limiting block 202. The compression generates elastic force. When the limiting block 202 is driven by the connector 1 to the position of the arc-shaped recessed groove of the limiting ring 105, the limiting block 202 is pushed towards the limiting ring 105 by the elastic force generated by the spring 204. At this time, the rotating ring 201 is rotated clockwise. The surface of the rotating ring 201 is striped, which makes it easy for the operator to rotate the rotating ring 201. When the rotating ring 201 rotates, it will contact the insertion rod 203. The surface of the insertion rod 203 is arc-shaped. At this time, the rotating ring 201 will generate a pushing force on the insertion rod 203. The rotating ring 201 pushes the insertion rod 203 to fix the limiting block 202 in the position of the arc-shaped recessed surface of the limiting ring 105, thereby connecting and fixing the connector 1 to the input pipe 101. This connection method is quick and convenient, and can realize quick connection and disconnection, thereby greatly shortening the loading and unloading time and improving work efficiency.

[0034] Since the connector 1 is fixedly connected to the input pipe 101, the spring 302 under pressure exerts a thrust on the sealing ring 301, thereby ensuring that the sealing ring 301 is tightly attached to the end of the input pipe 101, thus ensuring the sealing of the connection between the connector 1 and the input pipe 101 and preventing liquid leakage during transportation. During the transportation of liquefied gas, the throttle 102 is turned to control the control valve 103. When the tank is filled, the pressure inside will follow the filling. The control valve 103 can control the gas pressure by adjusting its opening degree to ensure stable gas transmission.

[0035] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with this embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0036] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A quick-connect coupling for loading and unloading liquefied gas tank trucks, comprising a coupling (1), wherein an input pipe (101) is inserted into the right side of the coupling (1), and the side wall of the coupling (1) has a rotating hole, characterized in that, A control valve (103) is rotatably connected to the inner wall of the rotating hole, and a handle (102) is fixedly connected to the side of the control valve (103) away from the connector (1). The connector (1) is provided with a quick-connect assembly (2) on the side near the input pipe (101). The quick-connect assembly (2) includes a swivel ring (201) threaded onto the outer surface of the connector (1). The side wall of the connector (1) is provided with a plurality of sliding holes (104). The inner walls of the plurality of sliding holes (104) are slidably connected to insert rods (203). The side of the plurality of insert rods (203) away from the swivel ring (201) is fixedly connected to a limit block (202). The outer surface of the plurality of insert rods (203) is fitted with a spring (204).

2. The quick-connect coupling for loading and unloading liquefied gas tank trucks according to claim 1, characterized in that, The ends of several springs (204) away from the connector (1) are fixedly connected to the side of the limiting block (202) near the connector (1), and the outer surface of the input tube (101) is fixedly connected to a limiting ring (105).

3. The quick-connect coupling for loading and unloading liquefied gas tank trucks according to claim 2, characterized in that, The outer surface of the limiting ring (105) is arc-shaped and concave, and the side of each of the limiting blocks (202) near the limiting ring (105) is semi-arc.

4. The quick-connect coupling for loading and unloading liquefied gas tank trucks according to claim 3, characterized in that, The outer surface of the rotating ring (201) is provided with striped grooves. The side of the rotating ring (201) near the insert rod (203) is a slope, and the side of several insert rods (203) near the rotating ring (201) is a circular arc surface.

5. The quick-connect coupling for loading and unloading liquefied gas tank trucks according to claim 4, characterized in that, The inner wall of the connector (1) is provided with a sealing groove, and a plurality of spring pieces (302) are fixedly connected to the inner wall of the sealing groove. A sealing ring (301) is fixedly connected to the side of the plurality of spring pieces (302) away from the sealing groove.

6. The quick-connect coupling for loading and unloading liquefied gas tank trucks according to claim 5, characterized in that, The sealing ring (301) has a concave surface on the side near the input pipe (101), and the concave surface of the input pipe (101) is in contact with the end of the input pipe (101).

Images