CN203602963U - Hydraulic system of calender - Google Patents
Hydraulic system of calender Download PDFInfo
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- CN203602963U CN203602963U CN201320756915.6U CN201320756915U CN203602963U CN 203602963 U CN203602963 U CN 203602963U CN 201320756915 U CN201320756915 U CN 201320756915U CN 203602963 U CN203602963 U CN 203602963U
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- oil
- pump
- liquid level
- hydraulic system
- calender
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Abstract
The utility model discloses a hydraulic system of a calender. The hydraulic system of the calender comprises an oil tank, a liquid level monitoring device, an oil pump, a load, an oil temperature control device and an energy accumulator; the liquid level monitoring device comprises a liquid level sensor and a liquid level alarm, and the liquid level sensor is arranged in the oil tank and connected with the liquid level alarm; the oil pump comprises a main pump and a standby pump, and the main pump and the standby pump are respectively provided with a pipeline stretching in the oil tank; the oil temperature control device comprises an oil temperature monitoring meter, a cooling device and an oil temperature alarm; the oil temperature monitoring meter is arranged in the oil tank and connected with the oil temperature alarm; the cooling device is arranged in an oil return pipeline from the load to the oil tank; the energy accumulator is connected with a pipeline between the oil pump and the load. The hydraulic system of the calender eliminates factors of pressure unsteadiness, pressure of the hydraulic system is more steady, and machining quality of the calendering procedure is improved.
Description
Technical field
The utility model relates to papermaking equipment apparatus field, is specifically related to a kind of hydraulic system of calender.
Background technology
Calender is the equipment for improving paper glossiness, the one of press polish glazing process.Printed matter surface, after coating, treats that glazing layer is dry, if need again improve smoothness and the glossiness of glazing coating, and can be through calender press polish.General glazing glossiness in 65-85% left and right, after press polish, can reach glossiness more than 90-95%.
Calender comes paper press polish by the calender unit being combined into by hard roller and soft roller, and hard roller has heating function, and paper passes in the middle of hard roller and soft roller.In the time that roller and soft roller pressurize to paper firmly, hard roller meeting transferring heat is to paper, and soft roller pressurizes simultaneously, and at this in a flash, pressure and heat will cooperatively interact.Therefore to providing the hydraulic control of power to propose very high requirement, not only require to have stable pressure, and require pressure and flow to control.
But in actual use, the pressure of hydraulic system is very unstable, cannot meet the needs of actual use, the up-to-standard rate of paper press polish is low.There is the problem of hydraulic pump and various control valve response lags, also have the too low problem of oil tank liquid level, also have the too high problem of oil temperature.
Therefore, improving hydraulic system, eliminate as much as possible the factor of above pressure transient, is this area technical issues that need to address.
Utility model content
The technical problems to be solved in the utility model: the pressure transient of the hydraulic system of calender, affects product quality.
For solving the problems of the technologies described above, the technical solution of the utility model is as follows:
A hydraulic system for calender, comprises fuel tank, level monitoring device, oil pump, load, oil-temperature control device and accumulator; Described level monitoring device comprises liquid level sensor and liquid level alarm, and described liquid level sensor is located in fuel tank, and is connected with described liquid level alarm; Described oil pump comprises main pump and stand-by pump, all has pipeline to pass into described fuel tank; Described oil-temperature control device comprises oil temperature monitoring meter, cooling device and oil temperature alarm; Described oil temperature monitoring meter is located in described fuel tank, and is connected with described oil temperature alarm; Described in being located at, described cooling device loads in the oil returning tube of described fuel tank; Described accumulator is connected with the pipeline between described oil pump and described load.
Preferably, described oil pump is constant pressure variable plunger pump.
Preferably, described accumulator is a kind of pneumatic accumulator.
Pass through technique scheme, the utility model is set up level monitoring device, stand-by pump, oil-temperature control device and accumulator and is reached the problem of controlling calender pressure instability in the hydraulic system of calender, be specially the level monitoring device that is provided with warning function, a stand-by pump in parallel on main pump, be provided with the oil-temperature control device of cooling and warning function, arrange and there is the accumulator that absorbs and discharge hydraulic oil.Its beneficial effect is the factor of having eliminated pressure transient, makes the pressure of hydraulic system more stable, has improved the crudy of press polish operation.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the schematic block diagram of the hydraulic system of the disclosed calender of the utility model embodiment;
Fig. 2 is the schematic diagram of the operation principle of the hydraulic system of the disclosed calender of the utility model embodiment.
Numeral and the represented corresponding component title of letter in figure:
1. fuel tank 11. liquid level sensor 12. liquid level alarm 21. main pump 22. stand-by pump 3. load 4. accumulator 51. oil temperature monitoring meter 52. cooling device 53. oil temperature alarms
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Principle of the present utility model is: the utility model is set up level monitoring device, stand-by pump, oil-temperature control device and accumulator and reached the problem of controlling calender pressure instability in the hydraulic system of calender, be specially the level monitoring device that is provided with warning function, a stand-by pump in parallel on main pump, be provided with the oil-temperature control device of cooling and warning function, arrange and there is the accumulator that absorbs and discharge hydraulic oil.
Embodiment.
As depicted in figs. 1 and 2, comprise fuel tank 1, level monitoring device, oil pump, load 3, oil-temperature control device and accumulator 4; Described level monitoring device comprises liquid level sensor 11 and liquid level alarm 12, and described liquid level sensor 11 is located in fuel tank, and is connected with described liquid level alarm 12; Described oil pump comprises main pump 21 and stand-by pump 22, all has pipeline to pass into described fuel tank 1; Described oil-temperature control device comprises oil temperature monitoring meter 51, cooling device 52 and oil temperature alarm 53; Described oil temperature monitoring meter 51 is located in described fuel tank 1, and is connected with described oil temperature alarm 53; Described cooling device 52 is located at described load 3 in the oil returning tube of described fuel tank 1; Described accumulator 4 is connected with the pipeline between described oil pump and described load 3.
Stand-by pump 22 can break down or other inoperable situation at main pump 21, enables fast.
Oil temperature monitoring meter 51 can be in oil temperature during higher than set upper limit; send the signal that starts cooling device 52, arrive the warning line of reporting to the police if oil temperature further raises, start oil temperature alarm 53; dealt with problems by operating personnel's manual operation, if desired can autostop.Oil temperature monitoring meter 51 is a kind of thermocouple temperature sensor specifically.
The type of cooling of cooling device 52 is water-cooleds.Cooling like this efficiency is higher with oil cooling than air-cooled.
Accumulator is being that one can be stored in hydraulic pressure in pressure vessel, the energy accumulating device being discharged again when needed.Accumulator is the important auxiliary in hydraulic system, its dynamic quality, maintenance job stability, prolongation working life, reduction noise etc. are normally moved, improved to assurance system and play an important role.At modern Large Hydraulic System, particularly have in the system of intermittent working condition requirement and be especially worth of widely use
In the present embodiment, oil pump is constant pressure variable plunger pump.The advantage such as that constant pressure variable plunger pump has is simple in structure, volume is little, efficiency is high, the life-span is long, lightweight, suction capacity is strong
In the present embodiment, accumulator 4 is a kind of pneumatic accumulator, specifically a kind of bag type accumulator.The advantage of bag type accumulator: be applicable to all size type hydraulic system; Leather bag inertia is little, is quick on the draw, and is suitable as and eliminates pulsation; Be difficult for gas leakage, the possibility that does not have oil gas to mix; Maintenance easily, auxiliary device is few, installation is easy, inflation is convenient, is current most popular accumulator.
In the above-described embodiments, the utility model is set up level monitoring device, stand-by pump, oil-temperature control device and accumulator and is reached the problem of controlling calender pressure instability in the hydraulic system of calender, be specially the level monitoring device that is provided with warning function, a stand-by pump in parallel on main pump, be provided with the oil-temperature control device of cooling and warning function, arrange and there is the accumulator that absorbs and discharge hydraulic oil.Its beneficial effect is the factor of having eliminated pressure transient, makes the pressure of hydraulic system more stable, has improved the crudy of press polish operation.
Above-described is only preferred embodiment of the present utility model; it should be pointed out that for the person of ordinary skill of the art, do not departing under the prerequisite of the utility model creation design; can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (3)
1. a hydraulic system for calender, is characterized in that, comprises fuel tank, level monitoring device, oil pump, load, oil-temperature control device and accumulator; Described level monitoring device comprises liquid level sensor and liquid level alarm, and described liquid level sensor is located in fuel tank, and is connected with described liquid level alarm; Described oil pump comprises main pump and stand-by pump, all has pipeline to pass into described fuel tank; Described oil-temperature control device comprises oil temperature monitoring meter, cooling device and oil temperature alarm; Described oil temperature monitoring meter is located in described fuel tank, and is connected with described oil temperature alarm; Described in being located at, described cooling device loads in the oil returning tube of described fuel tank; Described accumulator is connected with the pipeline between described oil pump and described load.
2. the hydraulic system of a kind of calender according to claim 1, is characterized in that, described oil pump is constant pressure variable plunger pump.
3. the hydraulic system of a kind of calender according to claim 1, is characterized in that, described accumulator is a kind of pneumatic accumulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320756915.6U CN203602963U (en) | 2013-11-25 | 2013-11-25 | Hydraulic system of calender |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320756915.6U CN203602963U (en) | 2013-11-25 | 2013-11-25 | Hydraulic system of calender |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203602963U true CN203602963U (en) | 2014-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320756915.6U Expired - Fee Related CN203602963U (en) | 2013-11-25 | 2013-11-25 | Hydraulic system of calender |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203602963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508312A (en) * | 2014-09-25 | 2016-04-20 | 天津西澳维密封技术发展有限公司 | Mechanical seal auxiliary system |
-
2013
- 2013-11-25 CN CN201320756915.6U patent/CN203602963U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508312A (en) * | 2014-09-25 | 2016-04-20 | 天津西澳维密封技术发展有限公司 | Mechanical seal auxiliary system |
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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: 20140521 Termination date: 20201125 |
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| CF01 | Termination of patent right due to non-payment of annual fee |