A light and stable LNG filling gun

Abstract

The utility model discloses a kind of portable stable LNG liquid adding gun, it is related to liquid adding gun appliance technical field, including the protective tube of infusion tube sleeve connection in the outer end of infusion tube and the fixed tube of sleeve connection in the front end of protective tube, infusion tube rear end is sleeved with mounting ring, first limit block is fixedly connected on mounting ring, and mounting plate is installed in mounting ring front end, cavity is established between protective tube and infusion tube;The utility model is through the cooperation of positioning groove and fixed mechanism, it is convenient for fixed clamp to be added liquid object clamping, and positioning groove is connected with the liquid object to be added, and then reinforce liquid adding gun and the liquid object to be added, avoid liquid leakage due to liquid adding gun shaking;Again through the cooperation of control mechanism and connecting rod, it is convenient for inward clamping limit hand clamp, drive connecting rod and mounting plate forward, and then drive fixed clamp inward clamping, make device easy to use, reduce operation difficulty, improve filling efficiency;Finally solve the problem of poor stability when adding liquid of existing device and liquid adding gun design complicated.

Description

Technical Field

[0001] This utility model relates to the technical field of liquid filling guns, and in particular to a lightweight and stable LNG filling gun. Background Technology

[0002] With the increasing global demand for clean energy, LNG (liquefied natural gas), as a relatively clean and efficient energy source, is being used more and more widely in transportation, energy supply and other fields. In the process of LNG application, the LNG refueling process is crucial, and the LNG refueling gun is the key component in the LNG refueling equipment that is directly connected to the vehicle or storage container to realize the liquid refueling.

[0003] Currently available LNG refueling nozzles on the market have some shortcomings. For example, during the refueling process, the nozzle may be affected by the impact of liquid flow, vehicle shaking, and other factors, causing the nozzle's position to shift. This not only affects the accuracy and stability of refueling but may also cause liquid leakage, posing a safety hazard. Furthermore, the operating mechanism of some nozzles is not reasonably designed, and the operation steps are cumbersome, requiring operators to spend a lot of time and effort, reducing refueling efficiency. For instance, the switch design of some nozzles is inconvenient to operate or requires a large amount of force to operate, increasing the difficulty of the operator's work. Therefore, these problems need to be addressed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a lightweight and stable LNG dispensing gun.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lightweight and stable LNG dispensing gun, comprising a dispensing tube, a protective tube sleeved on the outer end of the dispensing tube, and a fixing tube sleeved on the front end of the protective tube. A mounting ring is sleeved on the rear end of the dispensing tube, a first limiting block is fixedly connected to the mounting ring, and a mounting plate is mounted on the front end of the mounting ring. A cavity is formed between the protective tube and the dispensing tube, and a first spring is installed inside the cavity. The other end of the first spring is connected to the mounting plate, and a control mechanism is mounted on the mounting plate. A fixing mechanism is mounted on the front end of the control mechanism, and a protective mechanism is mounted on the front end of the dispensing tube.

[0006] Preferably, the control mechanism includes a limiting hand clamp that is movably hinged to the upper and lower ends of the mounting plate, a connecting rod that is rotatably connected to the inner side of the limiting hand clamp at the hinge point with the mounting plate, and the middle part of the bottom end of the limiting hand clamp is hinged to the first limiting block.

[0007] Preferably, the fixing mechanism includes a second limiting block fixed to the other end of the connecting rod, a U-shaped mounting block is installed at the front end of the second limiting block, a fixing clip is hinged to the inner side of the mounting block, a torsion spring is installed at the hinge point between the fixing clip and the mounting block, and a third limiting block is fixed to the rear end of the fixing clip.

[0008] Preferably, both the second and third limiting blocks are provided with barbs, and the front end of the second limiting block is engaged with the rear end of the third limiting block.

[0009] Preferably, the protection mechanism includes an outlet tube installed at the front end of the infusion tube, a rubber stopper installed between the outlet tube and the infusion tube, a second spring sleeved on the outside of the rubber stopper, and the two ends of the second spring connected to the infusion tube and the outlet tube respectively.

[0010] Preferably, the protective tube has three equidistant positioning grooves on its front end periphery, and the fixing tube has a through-hole fixing groove that cooperates with the fixing mechanism.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the cooperation of the positioning groove and the fixing mechanism, facilitates the clamping of the object to be liquided, and the positioning groove engages with the object, thereby reinforcing the dispensing gun and the object and preventing liquid leakage due to gun shaking. Furthermore, through the cooperation of the control mechanism and the connecting rod, it facilitates the inward clamping of the limiting hand clamp, driving the connecting rod and mounting plate forward, which in turn drives the fixing clamp to clamp inward, simplifying the device's use, reducing operational difficulty, and improving dispensing efficiency. Ultimately, it solves the problems of poor stability and cumbersome dispensing gun design in existing devices. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the device proposed in this utility model;

[0014] Figure 2 This is a schematic diagram of the fixing mechanism structure proposed in this utility model;

[0015] Figure 3 This is a schematic diagram of the control mechanism structure proposed in this utility model;

[0016] Figure 4 This is a schematic cross-sectional view of the device proposed in this utility model;

[0017] Figure 5 The present utility model proposes Figure 4 Enlarged schematic diagram of the structure at part A in the middle;

[0018] Figure 6 The present utility model proposes Figure 4 Enlarged schematic diagram of the structure in part B.

[0019] The numbers in the diagram are: 1. Infusion tube; 2. Protective tube; 3. Fixing tube; 4. Mounting ring; 5. First limiting block; 6. Mounting plate; 7. Limiting hand clamp; 8. Connecting rod; 9. Second limiting block; 10. Fixing clamp; 11. Torsion spring; 12. Third limiting block; 13. Mounting block; 14. Positioning groove; 15. Infusion tube; 16. Rubber stopper; 17. Second spring. Detailed Implementation

[0020] 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.

[0021] Example: See Figure 1-6 This utility model discloses a lightweight and stable LNG dispensing gun, comprising a dispensing tube 1, a protective tube 2 sleeved on the outer end of the dispensing tube 1, and a fixing tube 3 sleeved on the front end of the protective tube 2. The dispensing tube 1 facilitates the dispensing of LNG liquid. An installation ring 4 is sleeved on the rear end of the dispensing tube 1. The installation ring 4 facilitates the installation of a first limiting block 5. The protective tube 2 protects the dispensing tube 1 from damage. The first limiting block 5 is fixedly connected to the installation ring 4, facilitating the engagement of a limiting clamp 7. An installation plate 6 is installed at the front end of the installation ring 4, facilitating the installation of a connecting rod 8. A cavity is formed between the protective tube 2 and the dispensing tube 1. A first spring is installed to facilitate the reset of the protective tube 2. The other end of the first spring is connected to the mounting plate 6, and a control mechanism is installed on the mounting plate 6. A fixing mechanism is installed at the front end of the control mechanism, and a protective mechanism is installed at the front end of the infusion tube 1. The control mechanism includes limit clamps 7 that are movably hinged to the upper and lower ends of the mounting plate 6, respectively. The limit clamps 7 facilitate the forward movement of the connecting rod 8 and the mounting plate 6. The inner side of the hinge of the limit clamp 7 and the mounting plate 6 is rotatably connected to the connecting rod 8, which facilitates the engagement of the second limit block 9 and the third limit block 12. The bottom middle of the limit clamp 7 is hinged to the first limit block 5.

[0022] In this utility model, the fixing mechanism includes a second limiting block 9 fixedly connected to the other end of the connecting rod 8. A U-shaped mounting block 13 is installed at the front end of the second limiting block 9, which facilitates the installation of the fixing clamp 10. The fixing clamp 10 is hinged to the inner side of the mounting block 13, which facilitates the positioning of the liquid-added object in conjunction with the torsion spring 11. A torsion spring 11 is installed at the hinge point between the fixing clamp 10 and the mounting block 13, which facilitates the reset of the fixing clamp 10. A third limiting block 12 is fixedly connected to the rear end of the fixing clamp 10. Both the second limiting block 9 and the third limiting block 12 are provided with barbs, and the front end of the second limiting block 9 is connected to the third limiting block 12. The rear end of the 12 is engaged with the protective mechanism, which includes an outlet pipe 15 installed at the front end of the infusion tube 1, through which liquid can be added to the object to be added; a rubber stopper 16 is installed between the outlet pipe 15 and the infusion tube 1, through which liquid backflow can be prevented; a second spring 17 is sleeved on the outside of the rubber stopper 16, through which the rubber stopper 16 can be reset; the two ends of the second spring 17 are respectively connected to the infusion tube 1 and the outlet pipe 15; three positioning grooves 14 are equally spaced on the front end of the protective tube 2, through which it can be engaged with the object to be added; and a fixing groove that cooperates with the fixing mechanism is opened through the fixing tube 3.

[0023] Working principle: When using this utility model, firstly, the handheld device is used to connect the liquid outlet pipe 15 to the object to be liquidated. Then, the two limiting hand clamps 7 are moved inward. When the limiting hand clamps 7 move inward, with the cooperation of the inclined section of the first limiting block 5, the limiting hand clamps 7 drive the mounting plate 6 and the connecting rod 8 to move forward. Then, the second limiting block 9 pushes the third limiting block 12 to cause the fixing clamp 10 to retract inward, clamping the object to be liquidated. At this time, the positioning groove 14 is engaged with one end of the object to be liquidated. At this time, the device is opened. Under the impact of the liquid, the rubber stopper 16 is pushed forward to form an opening, which facilitates the addition of LNG liquid to the object to be liquidated. If the object to be processed is filled, the liquid will flow back. At this time, due to the loss of the impact from the inside out, the second spring 17 drives the rubber stopper 16 to reset and block the infusion pipe 1 to prevent the liquid from flowing back. After the addition is completed, the limiting hand clamps 7 are released. With the cooperation of the first spring, the connecting rod 8 resets, and under the action of the torsion spring 11, the fixing clamp 10 opens, and the device can be taken out.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A lightweight and stable LNG dispensing gun, comprising a dispensing tube (1), a protective tube (2) sleeved on the outer end of the dispensing tube (1), and a fixing tube (3) sleeved on the front end of the protective tube (2), characterized in that: The infusion tube (1) is fitted with an installation ring (4) at its rear end. A first limiting block (5) is fixedly connected to the installation ring (4). An installation plate (6) is installed at the front end of the installation ring (4). A cavity is provided between the protective tube (2) and the infusion tube (1). A first spring is installed in the cavity. The other end of the first spring is connected to the installation plate (6). A control mechanism is installed on the installation plate (6). A fixing mechanism is installed at the front end of the control mechanism. A protective mechanism is installed at the front end of the infusion tube (1).

2. The lightweight and stable LNG dispensing gun according to claim 1, characterized in that: The control mechanism includes a limiting hand clamp (7) that is movably hinged to the upper and lower ends of the mounting plate (6). The limiting hand clamp (7) is rotatably connected to the inner side of the hinge joint of the mounting plate (6) and the middle part of the bottom end of the limiting hand clamp (7) is hinged to the first limiting block (5).

3. The lightweight and stable LNG dispensing gun according to claim 1, characterized in that: The fixing mechanism includes a second limiting block (9) fixedly connected to the other end of the connecting rod (8). A U-shaped mounting block (13) is installed at the front end of the second limiting block (9). A fixing clip (10) is hinged to the inner side of the mounting block (13). A torsion spring (11) is installed at the hinge point between the fixing clip (10) and the mounting block (13). A third limiting block (12) is fixedly connected to the rear end of the fixing clip (10).

4. The lightweight and stable LNG dispensing gun according to claim 3, characterized in that: Both the second limiting block (9) and the third limiting block (12) are provided with barbs, and the front end of the second limiting block (9) is engaged with the rear end of the third limiting block (12).

5. The lightweight and stable LNG dispensing gun according to claim 1, characterized in that: The protection mechanism includes an outlet tube (15) installed at the front end of the infusion tube (1), a rubber plug (16) is installed between the outlet tube (15) and the infusion tube (1), and a second spring (17) is sleeved on the outside of the rubber plug (16). The two ends of the second spring (17) are connected to the infusion tube (1) and the outlet tube (15) respectively.

6. The lightweight and stable LNG dispensing gun according to claim 1, characterized in that: The protective tube (2) has three positioning grooves (14) equidistantly opened on the front end periphery, and the fixing tube (3) has a fixing groove that cooperates with the fixing mechanism.

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