CN203809183U - Anti-impact oil spray nozzle - Google Patents
Anti-impact oil spray nozzle Download PDFInfo
- Publication number
- CN203809183U CN203809183U CN201420238205.9U CN201420238205U CN203809183U CN 203809183 U CN203809183 U CN 203809183U CN 201420238205 U CN201420238205 U CN 201420238205U CN 203809183 U CN203809183 U CN 203809183U
- Authority
- CN
- China
- Prior art keywords
- damping oil
- passage
- damping
- oil duct
- needle valve
- 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
Links
Abstract
The utility model relates to an accessory for oil spray nozzles, in particular to an anti-impact oil spray nozzle which comprises a needle valve, an upper needle valve body and a lower needle valve body. A shoulder is formed on the needle valve radially. The lower needle valve body is provided with a pressure chamber, an inlet passage, a spray hole, a damping oil container and a closed damping oil passage. The spray hole is formed in the bottom of the lower needle valve body. The diameter of the shoulder is equal to the inner diameter of the damping oil container. One end of the damping oil passage is communicated with an area above the shoulder, and the other end of the damping oil passage is communicated with an area below the shoulder. Both a partition plate dividing the damping oil passage into a first passage and a second passage and a plug member plugging the first passage or the second passage only when the needle valve moves upwards are arranged in the damping oil passage. Moving velocity of the needle valve can be reduced through the damping oil passage so as to decrease impact force and prolong service life of the needle valve. During moving upwards, the needle valve is applied with high damping force by the plug member, so that the impact force is lowered greatly; during moving downwards, the needle valve is applied with small damping force, and accordingly can reset conveniently and rapidly.
Description
Technical field
The utility model relates to a kind of oil sprayer annex, especially a kind of oil nozzle of protecting against shock.
Background technique
Therefore oil nozzle needs upper half part of needle-valve and upper half part of needle-valve body to combine closely because guaranteeing that oil in pressure chamber does not leak, to having relatively high expectations of needle-valve precision, tradition oil nozzle due to its supercharging and pressure leak process shorter, needle-valve fast starts and stops fast again, produces very large impact force, easily cause the damage of needle-valve, needle-valve is shorter working life, because needle-valve and needle-valve body are the coupling parts of a pair of precision-fit, once needle-valve damages, need integral replacing, cost is higher.
Model utility content
The utility model is intended to address the above problem, a kind of oil nozzle of protecting against shock is provided, thereby the movement velocity that it can slow down needle-valve by damping oil duct reduces impact force, improved the working life of needle-valve, by type of tamper evidence, can make needle-valve when up, be subject to larger damping force, greatly reduce impact force, during the descending return of end of injection, be subject to less damping force, fast and easy return, its technological scheme adopting is as follows:
A kind of oil nozzle of protecting against shock, it is characterized in that, comprise: needle-valve, upper needle-valve body and lower needle-valve body, on described needle-valve, along its radial direction, form the shaft shoulder, described lower needle-valve body has pressure chamber, the oil input channel being connected with pressure chamber, is opened in the spray orifice of lower needle-valve body bottom, damping oil receiving cavity and closed damping oil duct, the diameter of the described shaft shoulder equates with the internal diameter of damping oil receiving cavity, and described damping oil duct one end is communicated with the upper area of the shaft shoulder, and the other end is communicated with the lower zone of the shaft shoulder; In described damping oil duct, be provided with the type of tamper evidence that damping oil duct is divided into the dividing plate of first passage and second channel and only stops up first passage or second channel when needle-valve moves upward.
On technique scheme basis, the wall body of described dividing plate and damping oil duct is one-body molded.
Optionally, described type of tamper evidence is turnover panel, and the inwall of one end of described turnover panel and damping oil duct is rotationally connected, and the other end is overlapped on dividing plate under its Gravitative Loads.
Optionally, described type of tamper evidence is turnover panel, and described turnover panel is an elastomer, and the inwall of its one end and damping oil duct is affixed, and the other end is overlapped on dividing plate under its elastic force effect.
Optionally, described type of tamper evidence is a steel ball, and the sphere diameter of described steel ball is less than the internal diameter of damping oil duct and is greater than first passage and the internal diameter of second channel, is formed with and prevents that steel ball from deviating from the stopper protrusion of damping oil duct on the internal face of described damping oil duct.
The utlity model has following advantage: thus by the movement velocity that damping oil duct can slow down needle-valve, reduce impact force, improved the working life of needle-valve, by type of tamper evidence, can make needle-valve when up, be subject to larger damping force, greatly reduce impact force, during the descending return of end of injection, be subject to less damping force, fast and easy return.
Accompanying drawing explanation
Fig. 1: cross-sectional view of the present utility model;
Fig. 2: the structure for amplifying schematic diagram (A part structure for amplifying schematic diagram in Fig. 1) of damping oil receiving cavity part in embodiment 1;
Fig. 3: the local structure for amplifying schematic diagram of damping oil duct part described in embodiment 1;
Fig. 4: the structure for amplifying schematic diagram (A part structure for amplifying schematic diagram in Fig. 1) of damping oil receiving cavity part in embodiment 2;
Fig. 5: the local structure for amplifying schematic diagram of damping oil duct part described in embodiment 2;
Fig. 6: the structural representation of relation between dividing plate described in the utility model and damping oil duct;
Embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail:
embodiment 1
As shown in Fig. 1 and Fig. 6, the oil nozzle of a kind of protecting against shock of the present embodiment, it is characterized in that, comprise: needle-valve 1, upper needle-valve body 2 and lower needle-valve body 3, on described needle-valve 1, along its radial direction, form the shaft shoulder 7, described lower needle-valve body 3 has pressure chamber 5, the oil input channel 4 being connected with pressure chamber 5, be opened in the spray orifice 6 of lower needle-valve body 3 bottoms, damping oil receiving cavity 8 and closed damping oil duct 9, the diameter of the described shaft shoulder 7 equates with the internal diameter of damping oil receiving cavity 8, described damping oil duct 9 one end are communicated with the upper area of the shaft shoulder 7, the other end is communicated with the lower zone of the shaft shoulder 7, in described damping oil duct 9, be provided with the type of tamper evidence that damping oil duct 9 is divided into the dividing plate 10 of first passage 20 and second channel 21 and only stops up first passage 20 or second channel 21 when needle-valve 1 moves upward.
Preferably, described dividing plate 10 is one-body molded with the wall body of damping oil duct 9.
As shown in Figures 2 and 3, preferred, described type of tamper evidence is turnover panel 11, and the inwall of one end of described turnover panel 11 and damping oil duct 9 is rotationally connected, and the other end is overlapped on dividing plate 10 under its Gravitative Loads.
embodiment 2
As shown in Fig. 1 and Fig. 6, the oil nozzle of a kind of protecting against shock of the present embodiment, it is characterized in that, comprise: needle-valve 1, upper needle-valve body 2 and lower needle-valve body 3, on described needle-valve 1, along its radial direction, form the shaft shoulder 7, described lower needle-valve body 3 has pressure chamber 5, the oil input channel 4 being connected with pressure chamber 5, be opened in the spray orifice 6 of lower needle-valve body 3 bottoms, damping oil receiving cavity 8 and closed damping oil duct 9, the diameter of the described shaft shoulder 7 equates with the internal diameter of damping oil receiving cavity 8, described damping oil duct 9 one end are communicated with the upper area of the shaft shoulder 7, the other end is communicated with the lower zone of the shaft shoulder 7, in described damping oil duct 9, be provided with the type of tamper evidence that damping oil duct 9 is divided into the dividing plate 10 of first passage 20 and second channel 21 and only stops up first passage 20 or second channel 21 when needle-valve 1 moves upward.Described dividing plate 10 is one-body molded with the wall body of damping oil duct 9.
As shown in Figure 4 and Figure 5, preferred, described dividing plate 10 is one-body molded with the wall body of damping oil duct 9.5. the oil nozzle of a kind of protecting against shock according to claim 2, it is characterized in that: described type of tamper evidence is a steel ball 13, the sphere diameter of described steel ball 13 is less than the internal diameter of damping oil duct 9 and is greater than first passage 20 and the internal diameter of second channel 21, is formed with and prevents that steel ball 13 from deviating from the stopper protrusion 14 of damping oil duct 9 on the internal face of described damping oil duct 9.
During use, in damping oil receiving cavity 8, fill with full-bodied heavy oil, because damping oil duct 9 is narrower, high viscosity heavy oil will flow within it and can produce larger damping force, therefore no matter up needle-valve 1 is or descending, capital is subject to the effect of damping force, when needle-valve 1 is up, steel ball 13 stops up first passage 20 or second channel 21 under the promotion of heavy oil, now only there is a passage to flow for heavy oil, can diminish for the mobile cross-sectional area of heavy oil, therefore the damping force producing also increases, when needle-valve 1 is descending, steel ball 13 departs from dividing plate 10 under the promotion of heavy oil, now first passage 20 and second channel 21 are all opened, can become large for the mobile cross-sectional area of heavy oil, therefore the damping force producing also reduces.
With way of example, the utility model is illustrated above, but the utility model is not limited to above-mentioned specific embodiment, all any changes of doing based on the utility model or modification all belong to the claimed scope of the utility model.
Claims (5)
1. the oil nozzle of a protecting against shock, it is characterized in that, comprise: needle-valve, upper needle-valve body and lower needle-valve body, on described needle-valve, along its radial direction, form the shaft shoulder, described lower needle-valve body has pressure chamber, the oil input channel being connected with pressure chamber, is opened in the spray orifice of lower needle-valve body bottom, damping oil receiving cavity and closed damping oil duct, the diameter of the described shaft shoulder equates with the internal diameter of damping oil receiving cavity, described damping oil duct one end is communicated with the upper area of the shaft shoulder, and the other end is communicated with the lower zone of the shaft shoulder; In described damping oil duct, be provided with the type of tamper evidence that damping oil duct is divided into the dividing plate of first passage and second channel and only stops up first passage or second channel when needle-valve moves upward.
2. the oil nozzle of a kind of protecting against shock according to claim 1, is characterized in that: the wall body of described dividing plate and damping oil duct is one-body molded.
3. the oil nozzle of a kind of protecting against shock according to claim 2, is characterized in that: described type of tamper evidence is turnover panel, and the inwall of one end of described turnover panel and damping oil duct is rotationally connected, and the other end is overlapped on dividing plate under its Gravitative Loads.
4. the oil nozzle of a kind of protecting against shock according to claim 2, is characterized in that: described type of tamper evidence is turnover panel, and described turnover panel is an elastomer, and the inwall of its one end and damping oil duct is affixed, and the other end is overlapped on dividing plate under its elastic force effect.
5. the oil nozzle of a kind of protecting against shock according to claim 2, it is characterized in that: described type of tamper evidence is a steel ball, the sphere diameter of described steel ball is less than the internal diameter of damping oil duct and is greater than first passage and the internal diameter of second channel, is formed with and prevents that steel ball from deviating from the stopper protrusion of damping oil duct on the internal face of described damping oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238205.9U CN203809183U (en) | 2014-05-11 | 2014-05-11 | Anti-impact oil spray nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420238205.9U CN203809183U (en) | 2014-05-11 | 2014-05-11 | Anti-impact oil spray nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809183U true CN203809183U (en) | 2014-09-03 |
Family
ID=51447948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420238205.9U Expired - Fee Related CN203809183U (en) | 2014-05-11 | 2014-05-11 | Anti-impact oil spray nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809183U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677612A (en) * | 2020-06-24 | 2020-09-18 | 蒋惠 | High-capacity quantitative fuel injection valve with inductance circuit |
-
2014
- 2014-05-11 CN CN201420238205.9U patent/CN203809183U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677612A (en) * | 2020-06-24 | 2020-09-18 | 蒋惠 | High-capacity quantitative fuel injection valve with inductance circuit |
| CN111677612B (en) * | 2020-06-24 | 2021-07-13 | 苏州宝凡电子科技有限公司 | High-capacity quantitative fuel injection valve with inductance circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150511 |
|
| EXPY | Termination of patent right or utility model |