CN210531020U

CN210531020U - Differential pressure pipe meeting national six-discharge standard

Info

Publication number: CN210531020U
Application number: CN201920827839.0U
Authority: CN
Inventors: 郭兴桥; 朱广飞; 徐凯
Original assignee: Jiangsu Flexible Auto Parts Manufacturing Co ltd
Current assignee: Jiangsu Flexible Auto Parts Manufacturing Co ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-05-15
Anticipated expiration: 2029-06-03

Abstract

The utility model relates to a satisfy six emission standard's in state pressure differential pipe, including body and air inlet sleeve, the lock sleeve of setting in body one end, the die cavity has been seted up in the air inlet sleeve, the die cavity bottom has the frustum, the frustum center has the through-hole, the through-hole extends to outside the air inlet sleeve, the body inserts in the die cavity, body one end has the taper opening, the taper opening have with the interior conical surface of the outer conical surface of frustum matched with grafting, through-hole and body inner chamber intercommunication, the lock sleeve cover is established outside the body and is inserted the die cavity, the lock sleeve bottom compresses tightly taper open-ended outer conical surface. The differential pressure pipe meeting the national emission standard and the national emission standard is matched with the cone frustum and the cone-shaped opening through the specially designed structures, the structure of the sealing ring is omitted, the assembly efficiency is ensured, the metal sealing is adopted, the sealing performance is greatly improved, and the sealing life is greatly prolonged.

Description

Differential pressure pipe meeting national six-discharge standard

The technical field is as follows:

the utility model relates to the field of automotive technology, especially, relate to a satisfy six emission standard's in state pressure differential pipe.

Background art:

an air inlet of a differential pressure pipe in the existing automobile EGR (exhaust gas recirculation) generally needs to be provided with a sealing ring, so that the air inlet tightness is ensured. The rubber ring that the sealing washer generally adopted, to the assembly requirement higher, can not appear squinting, and after using for a long time, thereby the sealing washer takes place to warp very easily or damages and leads to losing efficacy, influences the use of car. The differential pressure pipe structure of the sealing structure is not suitable for the emission requirements of the sixth nation.

The utility model has the following contents:

the utility model aims at the defect of prior art, provide a simple structure, convenient assembling, sealed effectual pressure differential pipe that satisfies six emission standards in state.

The utility model discloses a realize through following technical scheme: the utility model provides a satisfy six emission standard's in state pressure differential pipe, includes the body and sets up air inlet sleeve, the lock sleeve in body one end, the die cavity has been seted up in the air inlet sleeve, the die cavity bottom has the frustum, the frustum center has the through-hole, the through-hole extends to outside the air inlet sleeve, the body inserts in the die cavity, body one end has the taper opening, the taper opening have with the interior conical surface of the outer conical surface of frustum matched with grafting, through-hole and body inner chamber intercommunication, the lock sleeve cover is established outside the body and is inserted in the die cavity, the lock sleeve bottom compresses tightly taper open-ended outer conical surface.

In order to facilitate assembly, the locking sleeve is in interference fit with the cavity, an original threaded connection structure is replaced, and assembly is facilitated, so that the locking sleeve can be guaranteed to effectively compress the tapered opening.

In order to further guarantee the validity of pressure equipment, the utility model discloses it is cascaded for the multistage with cavity structural design, the die cavity is including the first die cavity and the second die cavity that are linked together, the diameter of second die cavity is greater than the diameter of first die cavity, the frustum sets up in first die cavity, the locking cover sets up in the second die cavity.

The utility model has the advantages that: the differential pressure pipe meeting the national emission standard and the national emission standard is matched with the cone frustum and the cone-shaped opening through the specially designed structures, the structure of the sealing ring is omitted, the assembly efficiency is ensured, the metal sealing is adopted, the sealing performance is greatly improved, and the sealing life is greatly prolonged.

Description of the drawings:

fig. 1 is a schematic perspective view of a differential pressure pipe of the present invention meeting the national six-discharge standard;

FIG. 2 is a cross-sectional view of the differential pressure tube of the present invention meeting the six national emission standards;

fig. 3 is a schematic structural view of the tapered opening of the differential pressure tube according to the present invention, which satisfies the national six-discharge standard.

The specific implementation mode is as follows:

the following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the protection scope of the present invention can be clearly and clearly defined.

The differential pressure pipe meeting the national six-emission standard shown in fig. 1 comprises an L-shaped pipe body 1, an air inlet sleeve 2 and a locking sleeve 3, wherein the air inlet sleeve 2 and the locking sleeve 3 are arranged at one end of the pipe body 1.

As shown in fig. 2 and 3, the air inlet sleeve 2 is cylindrical, a cavity is formed in the air inlet sleeve 2, the cavity includes a first cavity 22 and a second cavity 23 which are communicated with each other, the first cavity 22 and the second cavity 23 are cylindrical, the diameter of the second cavity 23 is greater than that of the first cavity 22, a frustum 21 is arranged in the first cavity 22, that is, the bottom center of the first cavity 22 is upwardly arched to form a conical frustum 21, the center of the frustum 21 is provided with an air inlet through hole 24, the through hole 24 penetrates through the air inlet sleeve 2, the tube 1 is inserted into the cavity, one end of the tube 1 is provided with a conical opening 11, the conical opening 11 is horn-shaped and is integrally formed with the tube 1, the conical opening 11 is provided with an inner conical surface which is matched and spliced with the outer conical surface of the frustum 21, the through hole 24 is communicated with the inner cavity of the tube 1, the locking sleeve 3 is cylindrical and is sleeved outside the tube 1 and inserted into the second cavity 23, the locking sleeve 3 is in interference fit with the second cavity 23, and the bottom end of the locking sleeve 3 presses the outer conical surface of the conical opening 11.

During assembly, one end of the pipe body 1 is inserted into the first cavity 22, the frustum 21 is inserted into the conical opening 11, then the locking sleeve 3 is pressed inwards, and the conical opening 11 can be extruded by the bottom end face of the locking sleeve 3, so that the conical opening 11 and the frustum 21 are matched more tightly, a metal sealing structure is realized, and the sealing performance of the metal sealing structure is greatly superior to that of a sealing ring structure.

In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," "having," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "side", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Finally, it should be noted that: the above embodiments are only specific embodiments of the present invention, and are not intended to limit the technical solution of the present invention, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: those skilled in the art can still modify or easily conceive of changes in the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a satisfy six emission standard's in state pressure differential pipe, includes body and sets up air inlet sleeve, the lock sleeve in body one end, its characterized in that: the air inlet sleeve is internally provided with a cavity, the bottom end of the cavity is provided with a frustum, the center of the frustum is provided with a through hole, the through hole extends out of the air inlet sleeve, the pipe body is inserted into the cavity, one end of the pipe body is provided with a conical opening, the conical opening is provided with an inner conical surface matched and spliced with the outer conical surface of the frustum, the through hole is communicated with the inner cavity of the pipe body, the locking sleeve is sleeved outside the pipe body and inserted into the cavity, and the bottom end of the locking sleeve compresses the outer conical surface of the conical opening.

2. The differential pressure tube satisfying the national six emission standard according to claim 1, wherein: the locking sleeve is in interference fit with the cavity.

3. The differential pressure tube satisfying the national six emission standard according to claim 1, wherein: the die cavity comprises a first die cavity and a second die cavity which are communicated, the diameter of the second die cavity is larger than that of the first die cavity, the frustum is arranged in the first die cavity, and the locking sleeve is arranged in the second die cavity.