CN217422169U

CN217422169U - Expansible seal plug

Info

Publication number: CN217422169U
Application number: CN202123415527.5U
Authority: CN
Inventors: 徐刚
Original assignee: Chengdu Wit Electronic Fuel System Co ltd
Current assignee: Chengdu Wit Electronic Fuel System Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-09-13
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses an expansible seal blocks up, its characterized in that: including expanding cover (1), core (2) and O type circle (3) expand, the cover (1) of expanding open and to have the through-hole, the through-hole internal thread section of system of cover (1) one end expand, core (2) that expand be less than the aperture of measured part (5), core (2) of expanding make the external screw thread section, core (2) of expanding with cover (1) threaded connection expand, core (2) one end of expanding wear out the through-hole of cover (1) of expanding, core (2) of expanding go up the suit O type circle (3). The structure can plug the hole with large size change of the aperture, can closely contact with the hole wall to form a sealing structure, and guarantees effective sealing plugging.

Description

Expansible seal plug

Technical Field

The utility model relates to a sealing plug especially relates to a but bloated sealing plug of shutoff is sealed to hole class part.

Background

The sealing and plugging problem of parts is related to various modern industries such as air conditioners, automobiles, aviation, aerospace and the like, wherein the common plugging mode of the parts with the holes is end face sealing or O-shaped ring radial sealing. The end face sealing needs to be finished by a sealing end face outside a sealing hole, and if the sealing end face is not arranged, the sealing end face is limited by the structure and cannot be used; when the traditional O-shaped ring radial sealing plug is installed, the O-shaped ring is extruded with an orifice, and the problem that the O-shaped ring is not enough in compression ratio and is easy to leak or is damaged due to overlarge compression ratio when the size of the orifice is changed greatly is solved.

Disclosure of Invention

In order to solve the sealed shutoff of hole class part and meet the great problem that has not enough easy leakage of O type circle compression ratio or the too big fragile O type circle of O type circle compression ratio of aperture size change, the utility model provides a sealed jam of formula of can expanding, not only sealed reliable easily installation can also prolong the life of sealed jam mechanism.

The utility model discloses an expansible seal blocks up, its characterized in that: including the cover that expands, core and O type circle expand, the cover that expands open and to have the through-hole, the through-hole internal thread section of cover one end system of expanding, the core that expands little than the aperture of measured part, the core that expands make external screw thread section, the core that expands with the cover threaded connection that expands, core one end that expands wear out the through-hole of the cover that expands, the core that expands go up the suit O type circle.

Furthermore, an isolating ring is sleeved on the expansion core, and the two ends of the isolating ring are respectively provided with the O-shaped rings.

Furthermore, an inner hexagonal hole is axially formed at one end of the expansion core or a symmetrical plane is radially formed at one end of the expansion core.

The utility model discloses compare and have following effect in prior art: the utility model discloses a during installation of expandable seal plug, because the diameter ratio of the core that expands is little by the aperture of survey part, it is downthehole to install into the survey part very easily, screws the core that expands, and the compression ratio and the volume ratio of the O type circle as the sealing member change along with the size of tightening the moment, consequently can use on the great survey part of being surveyed of aperture size change, inseparable and pore wall contact formation seal structure guarantee effectual sealed shutoff. The utility model discloses O type circle and the extrusion in drill way when comparing in the radial seal installation of traditional O type circle, but the sealed O type circle of blockking up of expanding can use repeatedly many times, therefore this mechanism life is longer.

Drawings

Fig. 1 is a schematic view of the inflatable sealing plug of the present invention.

Fig. 2 is a schematic top view of fig. 1.

Fig. 3 is a schematic view of the inflatable sealing plug of the present invention.

In the figure: 1. the expansion sleeve 2, the expansion core 3, the O-shaped ring 4, the isolation ring 5 and the part to be measured.

Detailed Description

The purpose, technical solution and beneficial effects of the present invention will be further described in detail with reference to the accompanying drawings. It should be understood that the particular embodiments described herein are illustrative only and are not limiting upon the scope of the invention, as any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the invention are intended to be included within the scope of the invention.

Fig. 1, fig. 2 and fig. 3 show an expandable sealing plug according to the present invention, which is characterized in that: including the cover 1 that expands, expand core 2 and O type circle 3, the cover 1 that expands open and to have the through-hole, the cover 1 that expands have the step outer fringe, the through-hole system of the one end of the cover 1 that expands has internal thread section, the core 2 that expands have the step outer fringe, the core 2 that expands be less than the aperture of measured part 5, the little step outer fringe in the core 2 middle section that expands make external screw thread section, the core 2 that expands with the cover 1 threaded connection that expands, 2 one end of the core that expands wear out the cover 1's through-hole that expands, the little step outer fringe of the core 2 that expands on the suit O type circle 3.

Further, the outer edge of the small step of the expansion core 2 is sleeved with an isolating ring 4, two ends of the isolating ring 4 are respectively provided with the O-shaped rings 3, so that a double-O-shaped-ring sealing design is formed, the sealing structure is formed by closer contact with the hole wall, and effective sealing plugging is ensured.

Furthermore, an inner hexagonal hole is axially formed at one end of the expansion core 2 or a symmetrical plane is radially formed, so that the expansion core 2 can be more conveniently turned and twisted.

The utility model discloses a during installation of expandable seal plug, because the diameter ratio of bloated core 2 is little by the aperture of survey part 5, install very easily into surveyed part 5 downtheholely, screw bloated core 2, the compression ratio and the volume rate of the O type circle 3 as the sealing member change along with the size of screwing up moment, consequently can use on the great survey part 5 of being surveyed of aperture size change, inseparable and pore wall contact form seal structure, guarantee effectual sealed shutoff. The utility model discloses a but the sealed jam of expanding is installed in being surveyed 5 high-pressure fuel injection apparatus's of part downthehole, and O type circle and the extrusion in drill way when comparing in the radial seal installation of traditional O type circle, but the sealed O type circle 3 of blockking up of expanding use repeatedly many times, therefore this mechanism life is longer.

Claims

1. An expandable sealing plug, comprising: the expansion sleeve comprises an expansion sleeve (1), an expansion core (2) and an O-shaped ring (3), wherein a through hole is formed in the expansion sleeve (1), an internal thread section is formed in the through hole at one end of the expansion sleeve (1), the diameter (2) of the expansion core is smaller than the aperture of a part to be measured (5), an external thread section is formed in the expansion core (2), the expansion core (2) is in threaded connection with the expansion sleeve (1), one end of the expansion core (2) penetrates out of the through hole of the expansion sleeve (1), and the O-shaped ring (3) is sleeved on the expansion core (2).

2. An inflatable sealing plug according to claim 1, wherein: the expansion core (2) is sleeved with an isolating ring (4), and the two ends of the isolating ring (4) are respectively provided with the O-shaped rings (3).

3. An inflatable sealing plug according to claim 2, wherein: one end of the expansion core (2) is provided with an inner hexagonal hole in the axial direction or a symmetrical plane in the radial direction.