CN214790489U

CN214790489U - Double-seal filling joint

Info

Publication number: CN214790489U
Application number: CN202121285848.5U
Authority: CN
Inventors: 王占峰; 吴伟
Original assignee: HEFEI ZHENGFAN ELECTRONIC MATERIAL CO Ltd
Current assignee: HEFEI ZHENGFAN ELECTRONIC MATERIAL CO Ltd
Priority date: 2021-06-09
Filing date: 2021-06-09
Publication date: 2021-11-19
Anticipated expiration: 2031-06-09

Abstract

The utility model discloses a dual containment fills dress joint relates to gas cylinder joint technical field, including connecting the body, the surface integrated into one piece that connects the body radially is provided with annular flange, it is provided with the passageway that is used for gaseous passing to connect this internal axial, radially seted up the through-hole on the joint body, and through-hole and passageway intercommunication, the external screw thread has been seted up to the outside that connects the body. The external thread is provided with a bulge, the bulge is of an annular and hollow structure, and one side, close to the inside, of the bulge is communicated with the channel through a first air hole. The utility model discloses a set up with annular and hollow arch, the arch is stood up under the effect of atmospheric pressure to carry out the secondary separation on the basis of screw thread separation, played the effect that increases the gas tightness.

Description

Double-seal filling joint

Technical Field

The utility model relates to a gas cylinder joint technical field especially relates to a double containment fills dress and connects.

Background

The conventional mode of the phosphane gas cylinder only adopts a hard sealing mode, the sealing surface of the concave surface of the valve can deform in the frequent fastening process to cause sealing failure, and the field can only try to achieve sealing in a mode of increasing torque. The result of this operation is that there are multiple tightening and helium checks, and repeated operation sacrifices more efficiency, while increasing torque increases the risk of valve thread galling and even breakage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, and provides a double-sealing filling joint.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a dual containment fills dress and connects, includes and connects the body, the surface integrated into one piece who connects the body radially is provided with annular flange, connect this internal axial of body to be provided with the passageway that is used for gaseous to pass, connect radially to have seted up the through-hole on the body, and through-hole and passageway intercommunication, the external screw thread has been seted up to the outside that connects the body.

The external thread is provided with a bulge, the bulge is of an annular and hollow structure, and one side, close to the inside, of the bulge is communicated with the channel through a first air hole.

Optionally, one side of the protrusion, which is close to the outside, is arc-shaped.

Optionally, a groove is formed in the inner wall between the external threads, and the protrusion is arranged in the groove.

Optionally, the projection is radially disposed on the fitting body.

Optionally, a cavity is formed in the position, close to the external thread, of the joint body, and the cavity is communicated with the channel through a second air hole.

Compared with the prior art, the utility model discloses possess following advantage:

the utility model discloses a set up with annular and hollow arch, the arch is stood up under the effect of atmospheric pressure to carry out the secondary separation on the basis of screw thread separation, played the effect that increases the gas tightness.

The utility model discloses a set up the cavity on being close to the inner wall of external screw thread, the cavity can be stood up slightly under the effect of atmospheric pressure to make the external screw thread stood up slightly and inseparabler with the valve internal screw thread cooperation, played the effect of further strengthening the gas tightness.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of the external thread of FIG. 1 according to the present invention;

fig. 3 is a schematic structural view of an external thread of an embodiment of the present invention.

In the figure: the joint comprises a joint body 1, an annular flange 2, a through hole 3, a channel 4, an external thread 5, a bulge 6, a first air hole 7, a cavity 8 and a second air hole 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Example one

Referring to fig. 1-2, a double-sealing filling joint comprises a joint body 1, an annular rib 2 is radially arranged on the outer surface of the joint body 1 in an integrally formed manner, a channel 4 for gas to pass through is axially arranged in the joint body 1, a through hole 3 is radially arranged on the joint body 1, the through hole 3 is communicated with the channel 4, and an external thread 5 is arranged outside the joint body 1, which is the prior art and is not described herein again.

In the embodiment, the protrusions 6 are arranged between the external threads 5, the protrusions 6 are annular and hollow structures, and one inner side of the protrusions 6 is communicated with the channel 4 through the first air hole 7.

In this embodiment, one side of the protrusion 6 close to the outside is arc-shaped, and as shown in fig. 2, the protrusion 6 with an arc-shaped structure can conveniently pass through the internal thread of the valve, so as to avoid being locked when the internal thread and the external thread are screwed.

In this embodiment, the inner wall between the external threads 5 is provided with a groove, the protrusion 6 is arranged in the groove, and the arrangement of the groove provides a space for the arrangement of the protrusion 6.

In this embodiment, the protrusion 6 is made of a flexible material, which may be made of rubber or polymer, or may be made of flexible metal, so that the protrusion 6 plays a role of sealing and blocking under the action of air pressure.

In this embodiment, the protrusion 6 is radially disposed on the joint body 1, and the radially disposed protrusion 6 can better block gas.

In this embodiment, the position of the protrusion 6 may be in the middle of the internal thread, thereby playing a role of blocking the middle part, and simultaneously not affecting the matching of the threads on the two sides.

During the assembly, because 6 inner space of arch and external atmospheric pressure intercommunication, therefore when external thread 5 and internal thread cooperate, arch 6 can be recessed, thereby do not influence the cooperation of screw thread and connect, and after the assembly, the back of ventilating in the passageway 4, gas in the passageway 4 gets into in the inner space of arch 6 through first gas pocket 7, arch 6 is stiff and upright under the effect of atmospheric pressure this moment, thereby carry out the secondary separation on the basis of screw thread separation, the effect that has played the increase gas tightness.

It is worth mentioning that an annular recess similar to the protrusion 6 in shape and matched with the protrusion can be formed at the internal thread of the cylinder valve.

Example two

Referring to fig. 3, a cavity 8 is formed in the joint body 1 near the external thread 5, and the cavity 8 is communicated with the channel 4 through a second air hole 9.

It is worth mentioning that the cavity 8 should not be too close to the external thread 5, so as to avoid the external thread 5 from breaking or bending due to too thin thickness.

After the external thread 5 is matched with the internal thread of the gas cylinder valve, gas in the channel 4 enters the cavity 8 through the second air hole 9, and the cavity 8 is slightly erected under the action of air pressure, so that the external thread 5 is slightly erected to be matched with the internal thread of the valve more tightly, and the effect of further enhancing the air tightness is achieved.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a double containment fills dress connects, includes and connects body (1), the surface integrated into one piece of connecting body (1) radially is provided with annular flange (2), axial is provided with passageway (4) that are used for gas to pass in connecting body (1), radially seted up through-hole (3) on connecting body (1), and through-hole (3) and passageway (4) intercommunication, external screw thread (5), its characterized in that have been seted up to the outside of connecting body (1):

be provided with arch (6) between external screw thread (5), arch (6) adopt annular and hollow structure, arch (6) are by interior one side through first gas pocket (7) and passageway (4) intercommunication.

2. Double seal filling joint according to claim 1, characterized in that the outer side of the protrusion (6) is curved.

3. Double seal filling joint according to claim 2, characterized in that the inner wall between the outer threads (5) is provided with a groove, in which the protrusion (6) is arranged.

4. Double seal filling joint according to claim 3, characterized in that the protrusions (6) are arranged radially on the joint body (1).

5. Double seal filling joint according to claim 1, wherein the joint body (1) is provided with a cavity (8) near the external thread (5), said cavity (8) being in communication with the passage (4) through a second air hole (9).