CN213954060U - Freeze dryer oil cylinder with piston rod leakage protection function - Google Patents
Freeze dryer oil cylinder with piston rod leakage protection function Download PDFInfo
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- CN213954060U CN213954060U CN202023221968.7U CN202023221968U CN213954060U CN 213954060 U CN213954060 U CN 213954060U CN 202023221968 U CN202023221968 U CN 202023221968U CN 213954060 U CN213954060 U CN 213954060U
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- piston rod
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- cylinder barrel
- freeze dryer
- corrugated pipe
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Abstract
The utility model relates to a freeze dryer oil cylinder of piston rod external leakage protection, include: a cylinder barrel; the cylinder cover covers the opening of the cylinder barrel; the piston rod is movably arranged in the cylinder barrel; the piston rod sealing element is arranged in the cylinder barrel, the inner side surface of the piston rod sealing element is connected with the piston rod in a sealing mode, and the outer side surface of the piston rod sealing element is connected with the cylinder barrel in a sealing mode; the piston rod sealing element and the cylinder barrel are communicated with each other and provided with an external leakage detection hole; the hydraulic oil photoelectric detector is fixed on the outer wall of the cylinder barrel and is suitable for detecting hydraulic oil leaked from the outer leakage detection hole; the corrugated pipe is sleeved on the piston rod, one end of the corrugated pipe is hermetically connected with the cylinder cover, and the other end of the corrugated pipe is hermetically connected with the freeze dryer; through the cover be equipped with the bellows on the piston rod, the bellows both ends are fixed respectively on freeze dryer, cylinder cap, and when the leakage of hydraulic oil appeared in the hydro-cylinder, hydraulic oil only can stay to in the bellows, avoids getting into in the freeze dryer.
Description
Technical Field
The utility model relates to a freeze dryer oil cylinder specifically is a freeze dryer oil cylinder of piston rod external leakage protection.
Background
Since the value of the finished pharmaceutical product in the freeze dryer apparatus is very expensive, it must be ensured that the cylinder piston rod does not leak any more hydraulic oil into the freeze dryer tank.
The conventional means is that monitoring is realized through a hydraulic oil photoelectric detector, and when the hydraulic oil photoelectric detector gives an alarm, hydraulic oil leakage can be known; but the following 3 exceptions occur:
1. when the original hydraulic oil photoelectric monitor has an unexpected fault, the freeze dryer can not be interrupted when running;
2. when the oil cylinder enters the oil cylinder to damage the seal due to external pollution of hydraulic oil, the leakage of the piston rod is rapidly increased, and a system detects the leakage but cannot immediately interrupt the operation of equipment;
3. the equipment is suspended for a long time, but hydraulic oil is in a rod cavity of the oil cylinder, and the piston rod is sealed and slowly leaks along with the pressure reduction to be below 2 MPa.
In conclusion, how to completely isolate hydraulic oil from entering a box body of a freeze dryer becomes a problem which needs to be solved urgently by researchers of the company.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: how to completely isolate hydraulic oil from entering a freeze dryer box body;
in order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model relates to a freeze dryer oil cylinder of piston rod external leakage protection, include: a cylinder barrel; the cylinder cover covers the opening of the cylinder barrel; the piston rod is movably arranged in the cylinder barrel; the piston rod sealing element is arranged in the cylinder barrel, the inner side surface of the piston rod sealing element is connected with the piston rod in a sealing mode, and the outer side surface of the piston rod sealing element is connected with the cylinder barrel in a sealing mode; the piston rod sealing element and the cylinder barrel are communicated with each other and provided with an external leakage detection hole; the hydraulic oil photoelectric detector is fixed on the outer wall of the cylinder barrel and is suitable for detecting hydraulic oil leaked from the outer leakage detection hole; the corrugated pipe is sleeved on the piston rod, one end of the corrugated pipe is hermetically connected with the cylinder cover, and the other end of the corrugated pipe is hermetically connected with the freeze dryer;
compared with the traditional oil cylinder of the freeze dryer, in the scheme, the piston rod of the oil cylinder is sleeved with the corrugated pipe, two ends of the corrugated pipe are respectively fixed on the freeze dryer and the cylinder cover, and the corrugated pipe stretches or compresses along with the movement of the piston rod; when the oil cylinder leaks, the hydraulic oil only stays in the corrugated pipe and is prevented from entering the freeze dryer, so that even if the piston rod leaks outwards, the medicine in the box body of the freeze dryer cannot be polluted; when the equipment has detection alarm or routine maintenance, the corrugated pipe is checked regularly.
The corrugated pipe in the scheme adopts a 316L stainless steel corrugated pipe.
The utility model has the advantages that: the utility model relates to a freeze dryer oil cylinder of piston rod external leakage protection is through the cover on the piston rod being equipped with the bellows, and the bellows both ends are fixed respectively on freeze dryer, cylinder cap, and when the leakage of hydraulic oil appears in the hydro-cylinder, hydraulic oil only can stay to in the bellows, avoids getting into in the freeze dryer.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of the present invention;
in the figure: 1-cylinder barrel, 2-cylinder cover, 3-piston rod, 4-piston rod sealing element, 5-external leakage detection hole, 6-hydraulic oil photoelectric detector and 7-corrugated pipe.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.
As shown in fig. 1, the utility model relates to a freeze dryer cylinder of piston rod external leakage protection, include: a cylinder barrel 1; the cylinder cover 2 covers the opening of the cylinder barrel 1; the piston rod 3 is movably arranged in the cylinder barrel 1; the piston rod sealing element 4 is arranged in the cylinder barrel 1, the inner side surface of the piston rod sealing element is connected with the piston rod 3 in a sealing mode, and the outer side surface of the piston rod sealing element is connected with the cylinder barrel 1 in a sealing mode; the piston rod sealing element 4 and the cylinder barrel 1 are communicated with each other and provided with an external leakage detection hole 5; the hydraulic oil photoelectric detector 6 is fixed on the outer wall of the cylinder barrel 1 and is suitable for detecting hydraulic oil leaked from the outer leakage detection hole 5; the corrugated pipe 7 is sleeved on the piston rod 3, one end of the corrugated pipe is hermetically connected with the cylinder cover 2, and the other end of the corrugated pipe is hermetically connected with the freeze dryer;
compared with the traditional oil cylinder of the freeze dryer, in the scheme, the piston rod of the oil cylinder is sleeved with the corrugated pipe, two ends of the corrugated pipe are respectively fixed on the freeze dryer and the cylinder cover, and the corrugated pipe stretches or compresses along with the movement of the piston rod; when the oil cylinder leaks, the hydraulic oil only stays in the corrugated pipe and is prevented from entering the freeze dryer, so that even if the piston rod leaks outwards, the medicine in the box body of the freeze dryer cannot be polluted; when the equipment has detection alarm or routine maintenance, the corrugated pipe is checked regularly.
The corrugated pipe in the scheme adopts a 316L stainless steel corrugated pipe.
The utility model relates to a freeze dryer oil cylinder of piston rod external leakage protection is through the cover on the piston rod being equipped with the bellows, and the bellows both ends are fixed respectively on freeze dryer, cylinder cap, and when the leakage of hydraulic oil appears in the hydro-cylinder, hydraulic oil only can stay to in the bellows, avoids getting into in the freeze dryer.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (1)
1. The utility model provides a freeze dryer oil cylinder of piston rod external leakage protection which characterized in that includes:
a cylinder barrel;
the cylinder cover covers the opening of the cylinder barrel;
the piston rod is movably arranged in the cylinder barrel;
the piston rod sealing element is arranged in the cylinder barrel, the inner side surface of the piston rod sealing element is connected with the piston rod in a sealing mode, and the outer side surface of the piston rod sealing element is connected with the cylinder barrel in a sealing mode;
the piston rod sealing element and the cylinder barrel are communicated with each other and provided with an external leakage detection hole;
the hydraulic oil photoelectric detector is fixed on the outer wall of the cylinder barrel and is suitable for detecting hydraulic oil leaked from the outer leakage detection hole;
the corrugated pipe is sleeved on the piston rod, one end of the corrugated pipe is hermetically connected with the cylinder cover, and the other end of the corrugated pipe is hermetically connected with the freeze dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023221968.7U CN213954060U (en) | 2020-12-28 | 2020-12-28 | Freeze dryer oil cylinder with piston rod leakage protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023221968.7U CN213954060U (en) | 2020-12-28 | 2020-12-28 | Freeze dryer oil cylinder with piston rod leakage protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213954060U true CN213954060U (en) | 2021-08-13 |
Family
ID=77194809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023221968.7U Active CN213954060U (en) | 2020-12-28 | 2020-12-28 | Freeze dryer oil cylinder with piston rod leakage protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213954060U (en) |
-
2020
- 2020-12-28 CN CN202023221968.7U patent/CN213954060U/en active Active
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