CN218266064U

CN218266064U - Sleeve sealing assembly and engine

Info

Publication number: CN218266064U
Application number: CN202220503075.1U
Authority: CN
Inventors: 李志元; 刘晓莹
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2023-01-10
Anticipated expiration: 2032-03-07

Abstract

The utility model provides a sleeve pipe seal assembly and engine, include: sleeve pipe, seal block, compressing tightly piece and organism shell. One end of the sleeve is provided with a first opening; the sealing block is fixed at the radial outer end of the sleeve and arranged at the first opening; the pressing piece is rotatably sleeved at the radial outer end of the sleeve, the pressing piece can move relative to the sleeve along the axial direction of the sleeve, and the sealing block is positioned on one side of the pressing piece close to the first opening; the engine body shell is provided with an oil gauge hole which is a through hole, the oil gauge hole is communicated with the crankcase outside the engine body shell and inside the engine body shell, and the sleeve sealing component is fixed at the oil gauge hole. The utility model discloses be convenient for dismouting and sleeve pipe angle's regulation is applicable to straight sleeve pipe and curved sleeve pipe.

Description

Sleeve sealing assembly and engine

Technical Field

The utility model relates to a sleeve pipe seal assembly, especially an engine with sleeve pipe seal assembly.

Background

In the prior art, the pressure of a crankcase inside a diesel engine is positive pressure, so that leakage easily occurs at the sealing position of an oil rule sleeve, and oil stains are formed. The sealing modes of the currently common oil rule sleeve are interference sealing and combined gasket sealing, and for the interference sealing scheme, in order to ensure the sealing effect, the interference magnitude cannot be too small, so the oil rule sleeve is not easy to disassemble and assemble; for the combined gasket sealing scheme, the direction of the opening of the sleeve is uncontrollable finally due to the fact that the sleeve and the compression screw sleeve are fixed, and the combined gasket sealing scheme is only suitable for straight sleeves. Accordingly, there is a need for a sleeve seal assembly and engine that overcomes the above-identified deficiencies.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sleeve pipe seal assembly and engine.

According to an aspect of the present invention, there is provided a casing sealing assembly, comprising:

the device comprises a sleeve, a first connecting piece and a second connecting piece, wherein one end of the sleeve is provided with a first opening;

the sealing block is fixed at the radial outer end of the sleeve and arranged at the first opening;

the pressing piece is rotatably sleeved at the radial outer end of the sleeve, the pressing piece can move along the axial direction of the sleeve relative to the sleeve, and the sealing block is located on one side, close to the first opening, of the pressing piece.

Preferably, the compressing member includes a threaded portion, a grasping portion, and a connecting portion between the threaded portion and the grasping portion, a thread is provided at a radially outer end of the threaded portion, and the threaded portion of the compressing member is placed close to the first opening and the grasping portion is placed away from the first opening.

Preferably, the sealing block comprises a first sealing surface provided at an end of the sealing block adjacent the first opening.

According to another aspect of the present invention, there is provided an engine, comprising: the engine body shell and sleeve pipe seal assembly, be equipped with the dipstick hole on the engine body shell, the dipstick hole is the through-hole, the outside crankcase inside and the engine body shell of dipstick hole intercommunication, sleeve pipe seal assembly fixes dipstick hole department.

Preferably, the oil level hole comprises a first channel communicated with the outside of the engine body shell and a second channel extending from the first channel to the inside of the engine, the diameter of the first channel is larger than that of the second channel, and a second sealing surface is formed between the first channel and the second channel.

Preferably, the first sealing surface and the second sealing surface are both arranged obliquely, the first sealing surface and the second sealing surface are matched, and conical surface sealing is adopted between the first sealing surface and the second sealing surface.

Preferably, a thread is arranged in the first channel, the thread part is screwed into the first channel, the pressing piece presses the sealing block, and the pressing piece applies pressure to the sealing block in the direction from the first channel to the second channel along the axial direction of the oil gauge hole.

Preferably, an O-ring is provided between the first and second sealing surfaces, the sleeve being partially disposed in the second passage, the O-ring being provided at a radially outer end of the sleeve.

Preferably, the sealing block is located within the first channel and the gripping portion is located outside the first channel.

Preferably, the sealing block and the sleeve are coaxially arranged, the pressing piece and the sleeve are coaxially arranged, and the sleeve and the dipstick hole are coaxially arranged.

Compared with the prior art, the utility model provides a pair of sleeve pipe seal assembly and engine has following beneficial effect:

the sleeve is convenient to disassemble and assemble, the angle of the sleeve is easy to adjust, and the sleeve is suitable for straight sleeves and bent sleeves.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

fig. 1 is a cross-sectional view of a sleeve seal assembly of the present invention;

fig. 2 is a cross-sectional view of the sleeve seal assembly of the present invention assembled to a body shell;

fig. 3 is a perspective view of the sleeve seal assembly of the present invention;

FIG. 4 is a partial perspective view of the engine block housing of the present invention;

FIG. 5 is a cross-sectional view of the sleeve seal assembly with an O-ring of the present invention;

fig. 6 is a sectional view of the casing sealing assembly with the O-ring according to the present invention assembled to the housing.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral connection; 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 addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

Referring to fig. 1, the casing sealing assembly of the present invention includes a casing 1, a pressing member 2 and a sealing block 3. In this embodiment, the return bend that sleeve pipe 1 adopted, the utility model discloses a sleeve pipe seal assembly is applicable to straight sleeve pipe equally. One end of the sleeve 1 is provided with a first opening 11. The sealing block 3 is of a barrel-shaped ring structure, the sealing block 3 is sleeved on the sleeve 1, and the sealing block 3 is fixed to the radial outer end of the sleeve 1 in a welding combination mode. The sealing block 3 is fixed at the first opening 11 and the sleeve 1 is placed inside the sealing block 3 or arranged such that the sleeve 1 partially protrudes from one end of the sealing block 3. The sealing block 3 comprises a first sealing surface 31 located near one end of the first opening 11, said first sealing surface 31 being an inclined surface. The other end of the sealing block 3 is chamfered. In other embodiments, the sealing block 3 and the sleeve 1 may be provided as a one-piece structure.

The pressing member 2 includes a grasping portion 21, a threaded portion 22, and a connecting portion 23. A connecting portion 23 is provided between the gripping portion 21 and the threaded portion 22, and a groove is provided at the connecting portion 23. The center of the pressing piece 2 is provided with a through hole 24, and two ends of the through hole 24 are processed with chamfers. The diameter of the through hole 24 is larger than that of the sleeve 1, and the through hole and the sleeve are in clearance fit. The pressing piece 2 is sleeved at the radial outer end of the sleeve 1, the pressing piece 2 can rotate relative to the sleeve 1, and the pressing piece 2 can move along the axial direction of the sleeve 1 relative to the sleeve 1. The circumferential surface of the threaded portion 22 is threaded. The pressing member 2 is fitted over the sleeve 1 in such a way that the threaded portion 22 faces one end of the first opening 11 of the sleeve 1 and the catching portion 21 faces the other end of the sleeve 1. The sealing block 3 is located on the side of the sleeve 1 in the axial direction with respect to the pressure element 2 close to the threaded portion 22.

Referring to fig. 2, the utility model discloses an engine, including engine body shell 4, be equipped with dipstick hole 41 on 4 on the engine body shell, dipstick hole 41 is the echelonment setting. The oil level hole 41 communicates between the outside of the body case 4 and the crankcase 42 inside the body case 4. The dipstick hole 41 includes: a first passage 411 communicating with the outside of the body case 4, a second passage 412 extending from the first passage 411 toward the engine inner crankcase 42, and a second sealing surface 413 between the first passage 411 and the second passage 412. The second sealing surface 413 is arranged obliquely, the first sealing surface 31 and the second sealing surface 413 are matched and sealed in a conical surface sealing mode, and the sleeve 1 can be rotated to a proper position before being pressed. When in compression, the sealing block 3 and the thread part 22 are positioned in the first passage 411, threads are arranged in the first passage 411, and the compression piece 2 is fixed at the oil gauge hole 41 through threaded connection.

Because two metal surfaces are sealed, the machining precision and the roughness of the two sealing surfaces are strict, otherwise, leakage is easy to form. As shown in fig. 3 and 4, on the basis of the original sealing manner, an O-ring 414 is disposed between the first sealing surface 31 and the second sealing surface 413, the pressing member 2 presses the sealing block 3, and the sealing block 3 and the second sealing surface 413 press the O-ring 414 to realize sealing. In this embodiment, a portion of the cannula 1 extends into the second channel 412 and the first opening 11 is located within the second channel 412. After the pressing, the grasping portion 21 is located outside the dipstick hole 41.

The utility model discloses a sleeve pipe seal assembly and engine, 3 leakproofness of oil rule sleeve pipe are good and the dismouting of being convenient for. Because the pressing piece 2 can rotate relative to the sleeve 1, the proper angle of the sleeve 1 can be adjusted during assembly and then the sleeve is pressed, so that the pressing piece is suitable for various types of sleeves.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. A casing seal assembly, comprising:

the compressing piece is rotatably sleeved at the radial outer end of the sleeve, the compressing piece can move relative to the sleeve along the axial direction of the sleeve, and the sealing block is positioned on one side of the compressing piece, which is close to the first opening.

2. The casing seal assembly of claim 1, wherein the hold down member includes a threaded portion, a grabber portion, and a connection portion between the threaded portion and the grabber portion, the threaded portion having threads at a radially outer end, the threaded portion of the hold down member being positioned adjacent the first opening and the grabber portion being positioned away from the first opening.

3. The cannula seal assembly of claim 1, wherein the seal block includes a first sealing surface disposed on an end of the seal block proximate the first opening.

4. An engine, comprising: the casing sealing assembly of any one of claims 1 to 3, and a casing shell having an oil level hole formed therein, the oil level hole being a through hole communicating with a crankcase outside the casing shell and inside the casing shell, the casing sealing assembly being fixed to the oil level hole, the sealing block including a first sealing surface, and the pressing member including a threaded portion and a catching portion.

5. The engine of claim 4, wherein the oil level hole comprises a first passage communicating with the outside of the engine body shell and a second passage extending from the first passage to the inside of the engine, the first passage has a larger diameter than the second passage, and a second sealing surface is formed between the first passage and the second passage.

6. An engine according to claim 5, wherein the first and second sealing surfaces are each inclined, the first and second sealing surfaces co-operating to provide a conical seal therebetween.

7. An engine as set forth in claim 6 in which said first passage is threaded, said threaded portion is threaded into said first passage, said compression member compresses said seal block, and said compression member applies pressure to said seal block in a direction axially along said dipstick bore from said first passage to said second passage.

8. An engine according to claim 5, wherein an O-ring is provided between the first and second sealing surfaces, the sleeve being disposed partially within the second passage, the O-ring being provided at a radially outer end of the sleeve.

9. The engine of claim 5, wherein the seal block is located within the first channel and the capture portion is located outside of the first channel.

10. An engine as set forth in claim 4 in which said seal block and sleeve are coaxially disposed, said compression member and sleeve are coaxially disposed, and said sleeve and dipstick hole are coaxially disposed.