Variable-diameter reinforced filling hose gun head
By designing an L-shaped variable diameter reinforced filling hose nozzle, the problems of inconvenient connection of Dewar bottles of different specifications and low-temperature brittle fracture were solved, achieving convenient connection and sealing, and extending the service life of the nozzle.
Patent Information
- Application Number
- CN202520313396.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-26
AI Technical Summary
Existing filling nozzles require pre-replacement or additional fittings when dealing with Dewar bottles of different sizes, and are prone to brittle fracture and loose connection in low-temperature environments, affecting service life.
A variable diameter reinforced filling hose nozzle is designed, which adopts an L-shaped structure and includes a bridging assembly and a union assembly. The bridging assembly is fixed by a limiting plate and a metal washer, and the union assembly enables the connection of interfaces of different specifications through an inner nut, a limiting ring, a PTFE washer, and an expansion nut. Reinforcing ribs are provided at the corners to improve the structural strength.
It enables convenient connection of Dewar flasks of different sizes in low-temperature environments, ensuring tightness and sealing, and extending the service life of the nozzle.
Smart Images
Figure CN223690857U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a filling gun head, especially to a variable-diameter reinforced filling hose gun head. BACKGROUND
[0002] In the low-temperature liquid filling industry, especially in the liquefied LNG automatic filling system, the filling gun head is used to connect the Dewar bottle for opening and closing and supply and cut-off operation. Because the Dewar bottles produced by various manufacturers have different specifications, the sizes of the joints provided on the gas cylinder interfaces are also different. Influenced by this, the traditional filling needs to replace or install the joint on the gas cylinder in advance when facing different users. The joint is generally a copper double-thread joint, which is prone to brittle fracture after long-term low-temperature filling. If such a joint is directly installed on the gun head, it is not convenient to disassemble and assemble, especially when frost and ice are formed at the connection, which is easy to cause thread slipping and cracking due to operation violence. In addition, the connection tightness of the gun head is also an important factor affecting the service life of the gun head. There is a lack of a product that is convenient to use and has a long service life. SUMMARY
[0003] In view of the existing technical deficiencies, the utility model provides a variable-diameter reinforced filling hose gun head.
[0004] In order to achieve the above purpose, the utility model adopts the technical scheme of a variable-diameter reinforced filling hose gun head, which comprises a gun head, the gun head is in an L-shaped structure, the gun head has a longitudinal line part, a corner part and a horizontal line part in sequence along the medium flow direction, the end part of the longitudinal line part is provided with a bridge assembly for connecting the hose, the end part of the horizontal line part is provided with a movable joint assembly for connecting the gas cylinder, the longitudinal line part is provided with an integral extension shutoff part in the vertical direction, and the shutoff part is further provided with a stop valve for cutting off the medium flow.
[0005] The bridge assembly comprises a bridge nut, a limiting sheet and a metal gasket, the longitudinal line part is further provided with an internal thread at the end position, the limiting sheet is sleeved into the bridge nut to limit and position, and the limiting sheet and the longitudinal line part are fixed through thread connection, and the metal gasket is arranged between the limiting sheet and the bridge nut on the same axis.
[0006] The limiting sheet is provided with an integral and through screw sleeve part in the center, the screw sleeve part is provided with an external thread connected with the longitudinal line part, and the screw sleeve part is further provided with a fixed internal hexagonal groove.
[0007] The active joint assembly comprises an inner joint nut, a limiting ring, a Teflon gasket, a diameter expansion nut and a diameter expansion screw pipe, the cross line part is provided with an inner joint, the inner joint nut and the limiting ring are threadedly connected on the inner joint in sequence, the limiting ring blocks and limits the inner joint nut from being taken off along the axis of the inner joint, the diameter expansion screw pipe is threadedly connected with the inner joint nut, the diameter expansion nut and the diameter expansion screw pipe are blocked and limited in the axial direction, the Teflon gasket is arranged between the inner joint nut and the limiting ring, and the Teflon gasket is also arranged between the diameter expansion nut and the diameter expansion screw pipe.
[0008] The diameter expansion screw pipe is provided with a convex rib matched with the diameter expansion nut.
[0009] The diameter of one end of the diameter expansion screw pipe is greater than that of the other end.
[0010] The angle between the corner part and the cross line part is provided with a reinforcing rib.
[0011] The utility model discloses a kind of variable-diameter reinforced filling hose gun heads, which adopts bending structure, and is designed with lifting support rod to facilitate operation connection. When filling different specifications of products, special joints can be added to ensure tightness and sealing, meeting the design use requirements. BRIEF DESCRIPTION OF DRAWINGS
[0012] Fig. 1 It is a structural schematic diagram of the utility model;
[0013] Fig. 2 It is a longitudinal line part connection structure schematic diagram of the utility model;
[0014] Fig. 3 It is a cross line part connection structure schematic diagram of the utility model. DETAILED DESCRIPTION
[0015] As Figs. 1-3As shown, a variable-diameter reinforced filling hose nozzle 1 comprises a nozzle 1 in L-shaped structure, which has a longitudinal linear portion 2, a corner portion 3 and a horizontal linear portion 4 in sequence along the medium flow direction, the end of the longitudinal linear portion 2 is provided with a bridge assembly 5 for connecting the hose, the end of the horizontal linear portion 4 is provided with a movable assembly 6 for connecting the gas cylinder, the longitudinal linear portion 2 is provided with an integral extension in the vertical direction, and the extension is provided with a stop valve 8 for cutting off the medium flow. The right-angle shape of the nozzle 1 is beneficial to change the medium flow direction and avoid the hose bending greatly, i.e. it becomes hard after frost solidification, and frequent disassembly and adjustment of the orientation are prone to brittle cracking. The bridge assembly 5 is used to connect the hose, and the movable assembly 6 is used to connect different specifications of Dewar bottles. The extension can be lifted by hand for alignment and adjustment of the concentricity of the Dewar bottle interface, which is beneficial to rapid disassembly and ensures the tightness of the connection. Therefore, the stop valve 8 can be used as a switch, and also as a support point for lifting the nozzle 1. It should be noted that the frost on the low-temperature pipeline cannot be directly touched, which is easy to freeze, or in the case of high air humidity, it is easy to stick to the anti-freezing gloves, which brings inconvenience to operation.
[0016] The bridge assembly 5 comprises a bridge nut 9, a limiting sheet 10 and a metal gasket 11, the longitudinal linear portion 2 is also provided with an internal thread at the end position, the limiting sheet 10 is sleeved into the bridge nut 9 to block and limit, and is fixed between the limiting sheet 10 and the longitudinal linear portion 2 through threaded connection, and the metal gasket 11 is arranged between the limiting sheet 10 and the bridge nut 9 on the same axis. In order to ensure production safety, the diameter of the filling cavity is actually smaller, and the limiting sheet 10 is used to fix the metal gasket 11 and narrow the diameter of the medium cavity.
[0017] The limiting sheet 10 is centrally provided with an integral and through screw sleeve portion 12, the screw sleeve portion 12 is provided with an external thread connected with the longitudinal linear portion 2, and the screw sleeve portion 12 is also provided with a fixed internal hexagonal groove. The limiting sheet 10 is fixed by the internal hexagon, which is not easy to loosen under the axial force in use, and is also convenient for disassembly, maintenance and maintenance.
[0018] The inner joint nut 13, the limiting ring 14, the Teflon washer 15, the expanding nut 16 and the expanding screw pipe 17 are sequentially screwed on the inner joint 18, the limiting ring 14 prevents the inner joint nut 13 from being taken off along the axis of the inner joint 18, the expanding screw pipe 17 is screwed with the inner joint nut 13, the expanding nut 16 is axially limited with the expanding screw pipe 17, the Teflon washer 15 is arranged between the inner joint nut 13 and the limiting ring 14, and the Teflon washer 15 is also arranged between the expanding nut 16 and the expanding screw pipe 17.
[0019] The expanding screw pipe 17 is provided with the convex rib 19 matched with the expanding nut 16, so that the expanding nut 16 cannot be directly taken off from the expanding screw pipe 17, and the limiting and limiting of the two are facilitated.
[0020] In the description of the utility model, it needs to be explained that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model, and the basic principle, main features and advantages of the utility model are shown and described above, and those skilled in the art should understand.
Claims
1. A variable diameter reinforced filling hose spigot comprising a spigot, characterized in that, The gun head is in L-shaped structure, the gun head has longitudinal line part, corner part and horizontal line part in sequence along medium flow direction, the end of the longitudinal line part is provided with bridge assembly for connecting hose, the end of the horizontal line part is provided with movable joint assembly for connecting gas cylinder, the longitudinal line part is provided with integral extension through and off part in vertical direction, the through and off part is further provided with cut-off valve for cutting off medium flow.
2. A variable diameter reinforced inflation hose tip as defined in claim 1, wherein, The bridge assembly comprises bridge nut, limiting sheet and metal gasket, the longitudinal line part is further provided with internal thread at end position, the limiting sheet is sleeved into bridge nut to stop and limit, and the limiting sheet and the longitudinal line part are fixed through thread connection, and the metal gasket is arranged between the limiting sheet and the bridge nut in the same axis.
3. A variable diameter reinforced inflation hose tip as defined in claim 2 wherein, The limiting sheet is centrally provided with integral and through screw sleeve part, the screw sleeve part is provided with external thread connected with the longitudinal line part, and the screw sleeve part is further provided with internal hexagonal groove fixed in rotation.
4. A variable diameter reinforced inflation hose tip as defined in claim 1 wherein, The movable joint assembly comprises inner joint nut, limiting ring, tetrafluoro gasket, diameter expansion nut and diameter expansion screw pipe, the horizontal line part is provided with inner joint, the inner joint nut and the limiting ring are sequentially threadedly connected on the inner joint, the limiting ring stops and limits the inner joint nut from being taken off along the axis of the inner joint, the diameter expansion screw pipe is threadedly connected with the inner joint nut, the diameter expansion nut and the diameter expansion screw pipe are axially stopped and limited, the tetrafluoro gasket is arranged between the inner joint nut and the limiting ring, and the tetrafluoro gasket is further arranged between the diameter expansion nut and the diameter expansion screw pipe.
5. A variable diameter reinforced inflation hose tip as defined in claim 4 wherein, The diameter expansion screw pipe is provided with convex rib matched with the diameter expansion nut.
6. A variable diameter reinforced inflation hose tip as defined in claim 4 wherein, One end of the diameter expansion screw pipe has larger diameter than the other end.
7. A variable diameter reinforced inflation hose tip as defined in claim 1 wherein, The corner part and the horizontal line part are provided with reinforcing rib at the included angle. The bridge assembly comprises bridge nut, limiting sheet and metal gasket, the longitudinal line part is further provided with internal thread at end position, the limiting sheet is sleeved into bridge nut to stop and limit, and the limiting sheet and the longitudinal line part are fixed through thread connection, and the metal gasket is arranged between the limiting sheet and the bridge nut in the same axis. The limiting sheet is centrally provided with integral and through screw sleeve part, the screw sleeve part is provided with external thread connected with the longitudinal line part, and the screw sleeve part is further provided with internal hexagonal groove fixed in rotation. The movable joint assembly comprises inner joint nut, limiting ring, tetrafluoro gasket, diameter expansion nut and diameter expansion screw pipe, the horizontal line part is provided with inner joint, the inner joint nut and the limiting ring are sequentially threadedly connected on the inner joint, the limiting ring stops and limits the inner joint nut from being taken off along the axis of the inner joint, the diameter expansion screw pipe is threadedly connected with the inner joint nut, the diameter expansion nut and the diameter expansion screw pipe are axially stopped and limited, the tetrafluoro gasket is arranged between the inner joint nut and the limiting ring, and the tetrafluoro gasket is further arranged between the diameter expansion nut and the diameter expansion screw pipe. The diameter expansion screw pipe is provided with convex rib matched with the diameter expansion nut. One end of the diameter expansion screw pipe has larger diameter than the other end. The corner part and the horizontal line part are provided with reinforcing rib at the included angle.