Manual liquid adding gun

Abstract

The utility model relates to the technical field of LNG (liquefied natural gas) filling equipment, in particular to a manual liquid adding gun which comprises a gun body, a handle and a handle seat, supporting rods are connected to one side of the gun body at equal intervals through threads, the other ends of the supporting rods are connected with the handle seat through bolts, and a center sleeve assembly is arranged on one side of the gun body and located between the supporting rods; the center sleeve assembly comprises a center sleeve front end and a center sleeve rear end, the center sleeve front end is connected with the center sleeve rear end through threads, and the periphery of the center sleeve rear end is connected with a center sleeve base through bolts. A traditional integral type center sleeve structure is replaced by a connecting mode of threaded connection and bayonet lock fixing, a quick splitting structure is added, using, dismounting and mounting convenience is improved, and therefore the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LNG filling equipment, and particularly relates to a manual liquid filling gun. Background Art

[0002] LNG (Liquefied Natural Gas), the English abbreviation of liquefied natural gas, is a combustible gas naturally extracted from gas fields, mainly composed of methane. LNG is refrigerated and liquefied from gaseous natural gas under normal pressure for easy storage and transportation. As a clean energy source, natural gas is increasingly favored, and many countries have listed LNG as the preferred fuel, and the proportion of natural gas in energy supply has increased rapidly. During the process of LNG filling, the commonly used manual liquid filling guns on the market have complex and heavy structures, high manufacturing costs, and inconvenient maintenance.

[0003] Currently, when using a liquid filling gun, there is a lack of a split structure. Usually, the structure of traditional liquid filling guns is complex and heavy, with high manufacturing costs and inconvenient maintenance. Therefore, a manual liquid filling gun is proposed to replace the traditional integral center sleeve through a connection method of threaded connection and pin fixing, add a quick disassembly structure, improve the convenience of use, disassembly and assembly, and thus improve the use effect. Summary of the Invention

[0004] Aiming at the problems in the prior art, the utility model provides a manual liquid filling gun to facilitate adding a quick disassembly structure, improve the convenience of use, disassembly and assembly, and thus improve the use effect.

[0005] The technical solution adopted by the utility model to solve its technical problems is a manual liquid filling gun, which includes a gun body, a handle, and a handle seat. One side of the gun body is equidistantly connected with support rods through threads, and the other end of the support rods is connected with the handle seat through bolts. A center sleeve assembly is arranged between the support rods on one side of the gun body;

[0006] The center sleeve assembly includes a front center sleeve and a rear center sleeve, and the front center sleeve is connected with the rear center sleeve through threads. A center sleeve seat is connected to the outer periphery of the rear center sleeve through bolts.

[0007] By adopting the above technical solution, it is convenient to use the threaded connection method to replace the traditional integral center sleeve structure, improve the convenience of disassembly, assembly and maintenance of the liquid filling gun, and at the same time, it is also beneficial to solve the problems of high manufacturing cost and inconvenient maintenance.

[0008] Specifically, a driving disk is sleeved on the outer periphery of the front center sleeve between the support rods. The gun body includes a claw. A second connecting rod is arranged between the driving disk and the claw, and the driving disk is rotationally connected with the claw through the second connecting rod. A center spring is sleeved between the driving disk and the rear center sleeve.

[0009] By adopting the above technical solution, it is convenient to use the jaw structure to improve the stability during the refueling process of the refueling gun.

[0010] Specifically, handles are provided at both ends of the handle seat. The handle seat includes handle seat pins, and the handle seat is connected to the handle through the handle seat pins.

[0011] By adopting the above technical solution, it is convenient to rotate and connect the handle for use.

[0012] Specifically, a valve seat is provided inside the front end of the central sleeve. A valve seat spring is installed between the rear end of the central sleeve and the valve seat through a card slot. One end of the valve seat is provided with a valve seat seal.

[0013] By adopting the above technical solution, it is convenient to seal the inner cavity of the refueling gun.

[0014] Specifically, central sleeve seat pins are provided at both ends of the central sleeve seat. The central sleeve seat is rotationally connected to the first connecting rod through the central sleeve seat pins, and the other end of the first connecting rod is rotationally connected to the handle.

[0015] By adopting the above technical solution, it is convenient for the handle to rotate and drive the central sleeve assembly to slide and displace.

[0016] Specifically, the gun body, the support rod handle seat, the front end of the central sleeve, and the rear end of the central sleeve are all made of aluminum alloy.

[0017] By adopting the above technical solution, it is convenient to solve the problems of the traditional refueling gun being bulky and costly.

[0018] Advantages of the present utility model:

[0019] For a manual refueling gun of the present utility model, by providing the gun body, the support rod, the handle seat, the front end of the central sleeve, the rear end of the central sleeve, and the central sleeve seat, it can use the connection methods of threaded connection and pin fixing to replace the traditional integral central sleeve, improve the convenience of disassembly, installation, and maintenance operations, and solve the problems of the traditional manual refueling gun having a complex and bulky structure, high manufacturing cost, and cumbersome disassembly and assembly during maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present utility model will be further described below with reference to the drawings and embodiments.

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a schematic diagram of the top cross-sectional structure of the present utility model;

[0023] Figure 3 is a schematic diagram of the side cross-sectional structure of the present utility model;

[0024] Figure 4 Schematic cross-sectional structure diagram of the center sleeve assembly of the present utility model;

[0025] In the figure: 1, gun body; 2, claw; 3, second connecting rod; 4, driving disc; 5, support rod; 6, center spring; 7, first connecting rod; 8, center sleeve seat; 9, center sleeve seat retaining pin; 10, handle; 11, handle seat retaining pin; 12, handle seat; 13, front end of the center sleeve; 14, valve seat; 15, rear end of the center sleeve; 16, valve seat spring; 17, valve seat seal. Specific embodiments

[0026] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] In order to facilitate the addition of a quick disassembly structure, improve the convenience of use, disassembly and assembly, and thus improve the use effect, as Figures 1-3 shown, a manual liquid filling gun according to the present utility model includes a gun body 1, a handle 10 and a handle seat 12. One side of the gun body 1 is equidistantly connected with support rods 5 by threads, and the other ends of the support rods 5 are connected with the handle seat 12 by bolts. A center sleeve assembly is arranged between the support rods 5 on one side of the gun body 1;

[0028] The center sleeve assembly includes a front end 13 of the center sleeve and a rear end 15 of the center sleeve, and the front end 13 of the center sleeve is connected to the rear end 15 of the center sleeve by threads. The periphery of the rear end 15 of the center sleeve is connected with a center sleeve seat 8 by bolts.

[0029] During use, through the threaded connection of the gun body 1, the support rods 5, the front end 13 of the center sleeve and the rear end 15 of the center sleeve, the traditional integral center sleeve structure can be replaced, and the convenience of disassembly, assembly and subsequent maintenance operations of the liquid filling gun can be improved, thereby improving the actual use effect.

[0030] The other end of the rear end 15 of the center sleeve is connected with a copper joint by threads.

[0031] In order to improve the stability of filling, exemplarily, as Figure 1 , Figure 2 shown, the present utility model further includes that a driving disc 4 is sleeved on the periphery of the front end 13 of the center sleeve between the support rods 5. The gun body 1 includes a claw 2. A second connecting rod 3 is arranged between the driving disc 4 and the claw 2, and the driving disc 4 is rotationally connected to the claw 2 through the second connecting rod 3. A center spring 6 is sleeved between the driving disc 4 and the rear end 15 of the center sleeve.

[0032] During use, it slides and displaces through the central sleeve assembly, and presses the driving disc through the central spring 6. The driving disc 4 pushes the second connecting rod 3 to drive the claw 2 to clamp the filling port of the LNG device, which can improve the stability during the filling process of the filling gun.

[0033] Exemplarily, as Figure 2 shown, the present utility model further includes that handles 10 are arranged at both ends of the handle seat 12. The handle seat 12 includes a handle seat pin 11, and the handle seat 12 is connected to the handle 10 through the handle seat pin 11.

[0034] During use, it is convenient to rotatably connect the handle seat 12 through the handle 10 and the handle seat pin 11, so as to utilize the pin structure to improve the convenience of disassembly and assembly.

[0035] Exemplarily, as Figure 3 shown, the present utility model further includes that a valve seat 14 is arranged inside the front end 13 of the central sleeve. A valve seat spring 16 is installed between the rear end 15 of the central sleeve and the valve seat 14 through a card slot, and a valve seat seal 17 is arranged at one end of the valve seat 14.

[0036] During use, it is convenient to seal the inner cavity of the filling gun through the valve seat 14, the valve seat spring 16 and the valve seat seal 17. The valve seat seal 17 is an O-ring.

[0037] Exemplarily, as Figure 2 shown, the present utility model further includes that central sleeve seat pins 9 are arranged at both ends of the central sleeve seat 8. The central sleeve seat 8 is rotatably connected to the first connecting rod 7 through the central sleeve seat pins 9, and the other end of the first connecting rod 7 is rotatably connected to the handle 10.

[0038] During use, it is convenient to connect the handle 10 for use through the central sleeve pin 9 and the first connecting rod 7.

[0039] Exemplarily, as Figure 2 、 Figure 3 shown, the present utility model further includes that the gun body 1, the support rod 5, the handle seat 12, the front end 13 of the central sleeve and the rear end 15 of the central sleeve are all made of aluminum alloy.

[0040] During use, it is convenient to solve the problems of complex, heavy structure and high manufacturing cost of traditional manual filling guns.

[0041] When the utility model is in use, first, two handles 10 are pulled. The handles 10 drive the center sleeve seat 8, the front end 13 of the center sleeve, and the rear end 15 of the center sleeve of the center sleeve assembly to start sliding displacement through the first connecting rod 7, and press the driving disk 4 through the center spring 6. The driving disk 4 pushes the second connecting rod 3 to drive the claw 2 to tightly clamp the filling port of the LNG device. Continuing to pull the handle 10, the valve seat 14 presses the valve seat spring 16 and pushes open the valve core in the filling port of the LNG device, and the LNG filling starts. After the filling is completed, the handle 10 is pulled back. After pressure relief and gas release, continue to pull the handle 10. The front end 13 of the center sleeve drives the driving disk 4, and the claw 2 opens, and the gun withdrawal is completed. The overall structure is simple and compact. Using the connection methods of threaded connection and snap pins, the liquid filling gun forms a split structure, which is convenient for subsequent disassembly, installation and maintenance. Moreover, a large amount of aluminum alloy materials and processes are adopted to solve the problems of complex, heavy structure and high manufacturing cost of the traditional manual liquid filling gun.

[0042] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of protection required by the utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims

1. A manual liquid filling gun, characterized in that: The gun body (1) comprises a gun body (1), a handle (10) and a handle seat (12), wherein one side of the gun body (1) is equidistantly connected to support rods (5) via threads, the other end of the support rods (5) is connected to the handle seat (12) via bolts, and a center sleeve assembly is provided between the support rods (5) on one side of the gun body (1); The center sleeve assembly comprises a center sleeve front end (13) and a center sleeve rear end (15), wherein the center sleeve front end (13) is connected to the center sleeve rear end (15) via threads, and the periphery of the center sleeve rear end (15) is connected to a center sleeve seat (8) via bolts.

2. A manual liquid filling gun according to claim 1, characterized in that: A driving disc (4) is provided on the outer sleeve of the front end (13) of the central sleeve between the support rods (5); the gun body (1) comprises a claw (2); a second connecting rod (3) is provided between the driving disc (4) and the claw (2); the driving disc (4) is rotatably connected to the claw (2) via the second connecting rod (3); and a central spring (6) is provided between the driving disc (4) and the rear end (15) of the central sleeve.

3. A manual liquid filling gun according to claim 1, characterized in that: Both ends of the handle seat (12) are provided with handles (10); the handle seat (12) comprises a handle seat bayonet (11), and the handle seat (12) is connected to the handle (10) via the handle seat bayonet (11).

4. A manual liquid filling gun according to claim 1, characterized in that: A valve seat (14) is arranged in the front end (13) of the center sleeve, a valve seat spring (16) is installed between the rear end (15) of the center sleeve and the valve seat (14) via a slot, and a valve seat seal (17) is arranged at one end of the valve seat (14).

5. A manual liquid filling gun according to claim 1, characterized in that: Both ends of the center sleeve (8) are provided with center sleeve bayonet pins (9), and the center sleeve (8) is rotatably connected to the connecting rod 1 (7) via the center sleeve bayonet pins (9), and the other end of the connecting rod 1 (7) is rotatably connected to the handle (10).

6. A manual liquid filling gun according to claim 1, characterized in that: The gun body (1), the support rod (5), the handle seat (12), the front end (13) of the center sleeve and the rear end (15) of the center sleeve are all made of aluminum alloy.

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