CN205117897U - Freeze dryer hydraulic cylinder with leak measurement function a little - Google Patents
Freeze dryer hydraulic cylinder with leak measurement function a little Download PDFInfo
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- CN205117897U CN205117897U CN201520934993.XU CN201520934993U CN205117897U CN 205117897 U CN205117897 U CN 205117897U CN 201520934993 U CN201520934993 U CN 201520934993U CN 205117897 U CN205117897 U CN 205117897U
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- pole chamber
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- rodless cavity
- hydraulic cylinder
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Abstract
The utility model relates to a freeze dryer hydraulic cylinder with leak measurement function a little, the upper portion of cylinder body is first no pole chamber, and the lower part is the first pole chamber that has, and first no pole chamber is equipped with the gas vent, and first have the pole chamber to be equipped with the oil inlet, and the hydrovalve is installed to the oil inlet, is equipped with the scale on the piston rod of miniature measurement hydro -cylinder, and there is the pole chamber on the upper portion of miniature measurement hydro -cylinder for the second, and the lower part does not have the pole chamber for the second, and the second does not have the pole chamber and passes through gas vent and first no pole chamber intercommunication, and the second has the logical air in pole chamber, the utility model discloses at miniature measurement hydro -cylinder of hydraulic cylinder's first no pole chamber connection, the volume change that the second of miniature measurement hydro -cylinder does not have the pole chamber can directly be reach by the scale on its piston rod, and according to the first relation that has pole chamber, first no pole chamber and second not to have the volume change in pole chamber, the reason that can judge the hydraulic cylinder leakage is the hydraulic cylinder internal leakage or the leakage of hydrovalve, need not dismantle valve member and oil pipe, save process and time, has improved work efficiency.
Description
Technical field
The utility model relates to technical field of hydraulic oil cylinder, especially a kind of freeze dryer hydraulic jack with tiny leakage measurement function.
Background technique
After freeze dryer hydraulic jack Long-Time Service, pressurize effect can decline, need find out leakaging cause in time and keep in repair, because scene requires very strict to the pollution of hydraulic oil, arbitrarily can not dismantle oil pipe, if but valve member and oil pipe are not dismantled in scene, very difficult judgement is the leakage of hydraulic jack internal leakage or hydraulic valve piece.
Model utility content
The technical problems to be solved in the utility model is: in order to need dismounting valve member and oil pipe to find out just solve freeze dryer hydraulic jack leakaging cause, the inefficient problem of troublesome poeration, provides a kind of freeze dryer hydraulic jack with tiny leakage measurement function.
The utility model solves the technological scheme that its technical problem adopts: a kind of freeze dryer hydraulic jack with tiny leakage measurement function, comprise cylinder body, piston, piston rod and miniature measurement oil cylinder, the top of described cylinder body is the first rodless cavity, bottom is the first rod chamber, described first rodless cavity is provided with relief opening, first rod chamber is provided with filler opening, described filler opening is provided with hydrovalve, the piston rod of described miniature measurement oil cylinder is provided with scale, the top of described miniature measurement oil cylinder is the second rod chamber, bottom is the second rodless cavity, described second rodless cavity is communicated with the first rodless cavity by relief opening, second rod chamber blowing air.
During detection, hydraulic jack is run to extreme higher position, and the piston rod of miniature measurement oil cylinder is stretched out completely, after hydraulic jack complete pressurize a period of time, the piston rod of hydraulic jack can obviously fall, the piston rod of miniature measurement oil cylinder also can fall, and the hydraulic oil of the second rodless cavity adds in the first rodless cavity, records the number of division on hydraulic cylinder piston rod drop and miniature measurement cylinder piston rod.If the number of division that miniature measurement cylinder piston rod reads and volume number are identical with falling behind the volume number that the first rodless cavity increases under hydraulic cylinder piston rod, so can judge that leaking is that hydrovalve causes, hydraulic jack does not have internal leakage; If the volume sum that the volume number that miniature measurement cylinder piston rod reads and the first rod chamber reduce equals the volume that the first rodless cavity increases, so can judge it is hydraulic jack internal leakage.
The beneficial effects of the utility model are, first rodless cavity of hydraulic jack of the present utility model connects the second rodless cavity of miniature measurement oil cylinder, the volume-variation of the second rodless cavity of miniature measurement oil cylinder directly can be drawn by the scale on its piston rod, according to the relation of the volume-variation of the first rod chamber, the first rodless cavity and the second rodless cavity, can judge that reason that hydraulic jack leaks is the leakage of hydraulic jack internal leakage or hydrovalve, do not need valve member and oil pipe dismounting, save operation and time, improve working efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is structural representation of the present utility model.
In figure: 1. cylinder body, 2. the first rod chamber, 3. the first rodless cavity, 4. miniature measurement oil cylinder, 5. the second rod chamber, 6. the second rodless cavity.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
A kind of freeze dryer hydraulic jack with tiny leakage measurement function as shown in Figure 1, comprise cylinder body 1, piston, piston rod and miniature measurement oil cylinder 4, the top of described cylinder body 1 is the first rodless cavity 3, bottom is the first rod chamber 2, described first rodless cavity 3 is provided with relief opening, first rod chamber 2 is provided with filler opening, described filler opening is provided with hydrovalve, the piston rod of described miniature measurement oil cylinder 4 is provided with scale, the top of described miniature measurement oil cylinder 4 is the second rod chamber 5, bottom is the second rodless cavity 6, described second rodless cavity 6 is communicated with the first rodless cavity 3 by relief opening, second rod chamber 5 blowing air.
During detection, hydraulic jack is run to extreme higher position, and the piston rod of miniature measurement oil cylinder 4 is stretched out completely, after hydraulic jack complete pressurize a period of time, the piston rod of hydraulic jack can obviously fall, the piston rod of miniature measurement oil cylinder 4 also can fall, and the hydraulic oil of the second rodless cavity 6 adds in the first rodless cavity 3, records the number of division on hydraulic cylinder piston rod drop and miniature measurement oil cylinder 4 piston rod.If the number of division that miniature measurement oil cylinder 4 piston rod reads and volume number are identical with falling behind the volume number that the first rodless cavity 3 increases under hydraulic cylinder piston rod, so can judge that leaking is that hydrovalve causes, hydraulic jack does not have internal leakage; If the volume sum that the volume number that miniature measurement oil cylinder 4 piston rod reads and the first rod chamber 2 reduce equals the volume that the first rodless cavity 3 increases, so can judge it is hydraulic jack internal leakage.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this model utility technological thought, can carry out various change and amendment completely.The technical scope of this model utility is not limited to the content on specification, must determine its technical scope according to right.
Claims (1)
1. one kind has the freeze dryer hydraulic jack of tiny leakage measurement function, it is characterized in that: comprise cylinder body (1), piston, piston rod and miniature measurement oil cylinder (4), the top of described cylinder body (1) is the first rodless cavity (3), bottom is the first rod chamber (2), described first rodless cavity (3) is provided with relief opening, first rod chamber (2) is provided with filler opening, described filler opening is provided with hydrovalve, the piston rod of described miniature measurement oil cylinder (4) is provided with scale, the top of described miniature measurement oil cylinder (4) is the second rod chamber (5), bottom is the second rodless cavity (6), described second rodless cavity (6) is communicated with the first rodless cavity (3) by relief opening, second rod chamber (5) blowing air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520934993.XU CN205117897U (en) | 2015-11-20 | 2015-11-20 | Freeze dryer hydraulic cylinder with leak measurement function a little |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520934993.XU CN205117897U (en) | 2015-11-20 | 2015-11-20 | Freeze dryer hydraulic cylinder with leak measurement function a little |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205117897U true CN205117897U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520934993.XU Active CN205117897U (en) | 2015-11-20 | 2015-11-20 | Freeze dryer hydraulic cylinder with leak measurement function a little |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205117897U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762947A (en) * | 2016-12-30 | 2017-05-31 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| CN106762946A (en) * | 2016-12-30 | 2017-05-31 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| CN110296126A (en) * | 2019-07-12 | 2019-10-01 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having detection hydraulic oil |
-
2015
- 2015-11-20 CN CN201520934993.XU patent/CN205117897U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106762947A (en) * | 2016-12-30 | 2017-05-31 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| CN106762946A (en) * | 2016-12-30 | 2017-05-31 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| CN106762946B (en) * | 2016-12-30 | 2018-05-18 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| CN106762947B (en) * | 2016-12-30 | 2018-05-18 | 河海大学常州校区 | A kind of single-action hydraulic cylinder shown with internal leakage |
| CN110296126A (en) * | 2019-07-12 | 2019-10-01 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having detection hydraulic oil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |