CN100410528C - Umbrella-style oil thrower with needle valve hood on head - Google Patents

Umbrella-style oil thrower with needle valve hood on head Download PDF

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Publication number
CN100410528C
CN100410528C CNB2006100461037A CN200610046103A CN100410528C CN 100410528 C CN100410528 C CN 100410528C CN B2006100461037 A CNB2006100461037 A CN B2006100461037A CN 200610046103 A CN200610046103 A CN 200610046103A CN 100410528 C CN100410528 C CN 100410528C
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CN
China
Prior art keywords
needle
valve
needle valve
spray oil
safety cover
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CNB2006100461037A
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Chinese (zh)
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CN1818372A (en
Inventor
隆武强
杜宝国
冷先银
魏胜利
齐昆鹏
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Dalian University of Technology
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Dalian University of Technology
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Publication date
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Priority to CNB2006100461037A priority Critical patent/CN100410528C/en
Publication of CN1818372A publication Critical patent/CN1818372A/en
Application granted granted Critical
Publication of CN100410528C publication Critical patent/CN100410528C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention relates to a conical spray oil injection nozzle with a needle valve head boot, which belongs to oil injection devices of the fuel system of internal combustion engines. Because the conical spray oil injection nozzle with a needle valve head boot is provided with a boot of a needle valve head at the tail end of a needle valve body, the lower end face of the boot is higher than the lower end face of the needle valve head when a needle valve is seated. The structure can not affect the spray characteristic of the conical spray oil injection nozzle, reduces the effect of gas flow motion in a cylinder on spray, makes spray easily spread outwards, benefits the formation of inflammable mixture in the cylinder and overcomes the problem that the needle valve head of the conical spray oil injection nozzle is easily broken in the process of use and transportation. Therefore, the reliability of the conical spray oil injection nozzle is increased, and the basis of the large-scale industrial application of the conical spray oil injection nozzle is provided.

Description

The umbrella spray oil nozzle of band needle-valve head protection cover
Technical field
The present invention relates to a kind of umbrella spray oil nozzle with needle-valve head protection cover, it belongs to the fueling injection equipment of fuel of internal combustion engine system.
Background technique
At present, the spraying of umbrella spray oil nozzle has the advantages that atomization is good, circumferencial direction is evenly distributed, injection rate is fast, has the potentiality that popularize.But because of the elongated structural feature of its needle-valve head, and be exposed to needle-valve body outside, so just cause it in transportation and using process, very easily to cause the needle-valve head accident that fractures.Because the existence of this unsafe factor has also limited the extensive use of umbrella spray oil nozzle.Therefore, need a kind of comparatively safe structure that can umbrella spray injector valve head.
Summary of the invention
Bump disconnected problem easily in order to solve umbrella spray oil nozzle head, the invention provides a kind of umbrella spray oil nozzle, under the prerequisite of this umbrella spray oil nozzle air motion in not influencing normal spraying and cylinder, make umbrella spray oil nozzle safety and reliable more with needle-valve head protection cover.
The technical solution adopted for the present invention to solve the technical problems is: a kind of umbrella spray oil nozzle with needle-valve head protection cover, one pair of precision pair that it is made up of needle-valve and needle-valve body.Be provided with the safety cover to the needle-valve head in the end of needle-valve body, when needle-valve was taken a seat, the lower end surface of this safety cover exceeded h than the lower end surface of needle-valve head, and the general range of h value is 0~1.0mm.
Above-mentioned safety cover can adopt the tapered annular structure of being made up of plane, circular arc and inclined-plane.This safety cover can circumferentially remove a part, forms 3~8 circumferential uniform taper fan-shaped pieces.
Above-mentioned safety cover also can adopt the tapered annular structure of being made up of plane and inclined-plane, or adopts the tapered annular structure of only being made up of the inclined-plane.
Above-mentioned safety cover also can adopt the cylindrical annular structure of being made up of plane and inner cylindrical surface.This safety cover also can circumferentially remove a part, forms 3~8 circumferential uniform cylindrical fan-shaped pieces.
The invention has the beneficial effects as follows: the umbrella spray oil nozzle of this band needle-valve head protection cover, owing to be provided with the safety cover of needle-valve head in the end of needle-valve body, when needle-valve was taken a seat, the lower end surface of this safety cover exceeded than the lower end surface of needle-valve head.Adopt this structure can not influence the spray characteristics of umbrella spray oil nozzle, spraying is reduced by the influence of air motion in the cylinder on the contrary, make the easier outside expansion of spraying, help the formation of inflammable mixture in the cylinder, and overcome the problem that umbrella spray injector valve head fractures easily in use and transportation process, improved the reliability of umbrella spray oil nozzle, the large-scale industrial application of spraying oil nozzle for umbrella provides the foundation.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a kind of structural drawing that sprays oil nozzle with the umbrella of needle-valve head protection cover.
Fig. 2 is circumferential closed tapered annular safety cover enlarged view.
Fig. 3 is circumferential semi-open type tapered annular safety cover enlarged view.
Fig. 4 is another circumferential closed tapered annular safety cover enlarged view.
Fig. 5 is another circumferential closed tapered annular safety cover enlarged view.
Fig. 6 is circumferential closed cylindrical ring protection cover enlarged view.
Fig. 7 is circumferential semi-open type cylindrical annular safety cover enlarged view.。
Fig. 8 is that the A-A of Fig. 7 is to sectional view.
Among the figure: 1, needle-valve, 1a, needle-valve head, the lower end surface of 1b, needle-valve head, 2, needle-valve body; the lower end surface of 2a, safety cover, 3,7,10, the plane, 4, circular arc, 5,, 11,12, the inclined-plane; 6, taper fan-shaped piece, 8, inner cylindrical surface, 9, cylindrical fan-shaped piece.
Embodiment
In the embodiment shown in Fig. 1,2,3,4,5; one pair of precision pair that needle-valve 1 and needle-valve body 2 are formed; be provided with the safety cover to needle-valve head 1a in the end of needle-valve body 2, when needle-valve 1 was taken a seat, the lower end surface 2a of this safety cover exceeded 0.3mm than the lower end surface 1b of needle-valve head.Fig. 2 illustrates safety cover and adopts the tapered annular structure of being made up of plane 3, circular arc 4 and inclined-plane 5.Fig. 3 illustrates safety cover and is circumferentially removing a part, forms 6 circumferential uniform taper fan-shaped pieces 6.Fig. 4 illustrates safety cover and adopts the tapered annular structure of being made up of plane 10 and inclined-plane 11.Fig. 5 illustrates safety cover and adopts the tapered annular structure of being made up of inclined-plane 12.
In the embodiment shown in Fig. 6,7,8; one pair of precision pair that needle-valve 1 and needle-valve body 2 are formed; be provided with the safety cover to needle-valve head 1a in the end of needle-valve body 2, when needle-valve 1 was taken a seat, the lower end surface 2a of this safety cover exceeded 0.3mm than the lower end surface 1b of needle-valve head.Fig. 6 illustrates safety cover and adopts the cylindrical annular structure of being made up of plane 7 and inner cylindrical surface 8.Fig. 7 illustrates safety cover and is circumferentially removing a part, forms 6 circumferential uniform cylindrical fan-shaped pieces 9.Fig. 8 illustrates A-A among Fig. 7 to sectional view, and shows 6 circumferential uniform cylindrical fan-shaped pieces 9.

Claims (7)

1. the umbrella with needle-valve head protection cover sprays oil nozzle; it comprises one pair of precision pair of being made up of needle-valve (1) and needle-valve body (2); it is characterized in that: be provided with safety cover in the end of needle-valve body (2) needle-valve head (1a); at needle-valve (1) when taking a seat; the lower end surface of this safety cover (2a) exceeds h than the lower end surface (1b) of needle-valve head, and the scope of h value is 0~1.0mm.
2. according to the umbrella of the described band needle-valve of claim 1 head protection cover spray oil nozzle, it is characterized in that: above-mentioned safety cover adopts the tapered annular structure of being made up of plane (3), circular arc (4) and inclined-plane (5).
3. according to the umbrella spray oil nozzle of the described band needle-valve of claim 2 head protection cover, it is characterized in that: above-mentioned safety cover is circumferentially removing a part, forms 3~8 circumferential uniform taper fan-shaped pieces (6).
4. according to the umbrella spray oil nozzle of the described band needle-valve of claim 1 head protection cover, it is characterized in that: above-mentioned safety cover adopts the tapered annular structure of being made up of plane (10) and inclined-plane (11).
5. according to the umbrella spray oil nozzle of the described band needle-valve of claim 1 head protection cover, it is characterized in that: above-mentioned safety cover adopts the tapered annular structure of being made up of inclined-plane (12).
6. according to the umbrella spray oil nozzle of the described band needle-valve of claim 1 head protection cover, it is characterized in that: above-mentioned safety cover adopts the cylindrical annular structure of being made up of plane (7) and inner cylindrical surface (8).
7. according to the umbrella spray oil nozzle of the described band needle-valve of claim 6 head protection cover, it is characterized in that: above-mentioned safety cover is circumferentially removing a part, forms 3~8 circumferential uniform cylindrical fan-shaped pieces (9).
CNB2006100461037A 2006-03-15 2006-03-15 Umbrella-style oil thrower with needle valve hood on head Expired - Fee Related CN100410528C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2006100461037A CN100410528C (en) 2006-03-15 2006-03-15 Umbrella-style oil thrower with needle valve hood on head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2006100461037A CN100410528C (en) 2006-03-15 2006-03-15 Umbrella-style oil thrower with needle valve hood on head

Publications (2)

Publication Number Publication Date
CN1818372A CN1818372A (en) 2006-08-16
CN100410528C true CN100410528C (en) 2008-08-13

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Family Applications (1)

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CNB2006100461037A Expired - Fee Related CN100410528C (en) 2006-03-15 2006-03-15 Umbrella-style oil thrower with needle valve hood on head

Country Status (1)

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CN (1) CN100410528C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109723590A (en) * 2018-12-27 2019-05-07 宁波安创电子科技有限公司 A kind of automobile nozzle with protective device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03194163A (en) * 1989-12-25 1991-08-23 Japan Electron Control Syst Co Ltd Manufacture of plate orifice for fuel injection valve
JPH03264767A (en) * 1990-03-15 1991-11-26 Japan Electron Control Syst Co Ltd Fuel injector
US5344080A (en) * 1993-03-25 1994-09-06 Kitagawa Industries Co., Ltd. Shower head
JPH09222057A (en) * 1996-02-15 1997-08-26 Zexel Corp Carbon deposit preventing device for electromagnetic type fuel injection valve

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03194163A (en) * 1989-12-25 1991-08-23 Japan Electron Control Syst Co Ltd Manufacture of plate orifice for fuel injection valve
JPH03264767A (en) * 1990-03-15 1991-11-26 Japan Electron Control Syst Co Ltd Fuel injector
US5344080A (en) * 1993-03-25 1994-09-06 Kitagawa Industries Co., Ltd. Shower head
JPH09222057A (en) * 1996-02-15 1997-08-26 Zexel Corp Carbon deposit preventing device for electromagnetic type fuel injection valve

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Anqing Zhongchuan Diesel Engine Co., Ltd.

Assignor: Dalian University of Technology

Contract record no.: 2011340000081

Denomination of invention: Umbrella-style oil thrower with needle valve hood on head

Granted publication date: 20080813

License type: Exclusive License

Open date: 20060816

Record date: 20110704

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080813

Termination date: 20110315