CN101428184B - Off-centre right-angle scratch board apparatus for rotary thin-film evaporator or cooling apparatus - Google Patents
Off-centre right-angle scratch board apparatus for rotary thin-film evaporator or cooling apparatus Download PDFInfo
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- CN101428184B CN101428184B CN2007101663295A CN200710166329A CN101428184B CN 101428184 B CN101428184 B CN 101428184B CN 2007101663295 A CN2007101663295 A CN 2007101663295A CN 200710166329 A CN200710166329 A CN 200710166329A CN 101428184 B CN101428184 B CN 101428184B
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- scraper
- axle sleeve
- pin
- cooler
- shaft
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Abstract
The invention relates to a scraper device for an evaporator, in particular to an eccentric right-angle scraper device for a rotating type film evaporator or cooler. The scraper device consists of a shaft sleeve, a pin, a pin shaft and a scraper component; the shaft sleeve is a columnar structure, and a mounting hole is formed thereon; the shaft sleeve is fixed on the rotor main shaft of the evaporator or the cooler; the fixed position deviates from the center of the main shaft; the scraper component is a laminated structure, with the edge in the shape of a wedge; the scraper component is connected with the shaft sleeve through the pin shaft which is embedded in the mounting hole of the shaft sleeve after penetrating through the scraper component; and the pin penetrates through the shaft sleeve and the pin shaft, and is used for determining the relative position of the shaft sleeve to the pin shaft. By adopting the mode of eccentric installation of the scraper on the runner main shaft, the invention solves the problem that the scraper lacks rigidity. Moreover, with the specially designed right-angle scraper structure, the invention solves the problem with the resistance of liquid. The invention is absolutely suitable for the working condition in which the rotating film evaporator or the cooler is full of liquid.
Description
Technical field
The present invention relates to a kind of evaporimeter screeding device, particularly a kind of off-centre right-angle screeding device that is used for thinfilm rotary evaporator or cooler.
Background technology
Concentrate at the material of industries such as petrochemical industry, pharmacy and food processing, in evaporation, rectifying, precipitation and the cooling procedure, thinfilm rotary evaporator and cooler are a kind of by rotor segment pressure film forming, can under vacuum condition, carry out the high-efficiency evaporator of falling film evaporation, its heat transfer coefficient is big, evaporation intensity is high, the overcurrent time is short, operating flexibility is big, has obtained extensive use.In thinfilm rotary evaporator or cooler, screeding device is a key device of this equipment, material is in access arrangement refrigerated separation process, make material on evaporimeter or cooler barrel, force film forming by rotor segment, and then be implemented in the course of work of carrying out falling film evaporation under the vacuum condition.Therefore whether the version of this screeding device adapts to technological requirement becomes the normal key factor of running continuously of equipment.According to the requirement of technology, present scraper plate form mainly contains three kinds, promptly movable scraper plate, hinge type scraper plate and fixed scraper plate.Movable scraper plate is the most basic, the modal a kind of scraper plate form, scraper plate is installed in four scraper plate guide grooves of rotor, radially get rid of to evaporation cylindrical shell internal face owing to be subjected to the centrifugal action of rotor rotation, simultaneously make circular motion with rotor, the this of scraper plate scrapes, and makes material be membranaceous turbulence state on the evaporation wall, greatly improved heat transfer coefficient, simultaneously thisly continuously scrape, suppress phenomenons such as overheated, the dried wall of material and fouling effectively; Fixed scraper plate all adopts metal material, it is rigidly connected on the rotor, the length of scraper plate is with the evaporation stack shell, rotor segment only is 1～2mm with the gap of evaporation stack shell inwall, processing of having relatively high expectations and installation accuracy, evaporation and concentration, precipitation or the purification of its suitable extra-high-speed viscosity and the material that easily spumes; The hinge type scraper plate is suitable for the easily material of fouling on heating surface, scraper plate adopts nonmetal parts usually, adopt the hinges mode that scraper plate is installed on the pivoted frame, when rotor rotation, because action of centrifugal force, scraper plate is pressed on the evaporation cylinder inboard wall, slides at wall at an angle with wall, material is spread to film, and prevent the wall fouling.More than three kinds of scraper plates liquid material only when the evaporimeter barrel flows effect good, but be not suitable for the operating mode that is full of liquid material when evaporimeter inside; Be full of when evaporimeter inside under the operating mode of liquid material, because the drag effect of liquid strengthens, the additional load of scraper plate strengthens, and causes the insufficient rigidity of scraper plate, and scraper plate can not fully contact with barrel, can't finish transpiration-cooled technical process.
Summary of the invention
Technical problem to be solved by this invention provides a kind of being applicable at thinfilm rotary evaporator or cooler inside and is full of the off-centre right-angle screeding device of working under the liquid working condition.
For solving the problems of the technologies described above, the present invention realizes as follows: the off-centre right-angle screeding device that is used for thinfilm rotary evaporator or cooler of the present invention is made up of axle sleeve, pin, bearing pin and scraper component; Axle sleeve is a column structure, which is provided with installing hole, and axle sleeve is fixed on the rotor main shaft of evaporimeter or cooler, the alignment of shafts of its fixed bit offset pervaporation device rotor; Scraper component is that the edge is the laminated structure of wedge shape, and bearing pin passes in the installing hole that scraper component is embedded into axle sleeve scraper component is connected with axle sleeve; Pin passes axle sleeve and bearing pin, is used to locate the relative position of axle sleeve and bearing pin.
The angle of described scraper component and axle sleeve becomes 90 °.
The installing hole of described bearing pin and axle sleeve is a matched in clearance.
Good effect of the present invention is: because the distance of the alignment of shafts L of the fixed bit offset pervaporation device rotor of scraper plate, so just effective width with scraper plate is controlled in the suitable scope, width effectively reduce the rigidity that has guaranteed scraper plate, when rotor main shaft drives the rotation of off-centre right-angle scraper plate, scraper component is that fulcrum tilts to the evaporimeter inner tube wall with the bearing pin, under the acting in conjunction of liquid resistance and centrifugal force, cylinder inboard wall can be close in the scraper component end, thereby scraper plate is fully contacted with inner tube wall, played the effect of augmentation of heat transfer; This screeding device has made full use of the resistance of liquid, in order to reduce the wear extent of scraper component end, bearing pin and scraper component guarantee that by gap suitable between them certain adjusting surplus is arranged between scraper plate and the inner tube wall, this structure scraper plate good rigidly, scraper plate fully contacts with inner tube wall, is applicable to that fully thinfilm rotary evaporator or cooler inside are full of the working condition of liquid.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is a structural representation of the present invention
Fig. 2 is a structural representation A-A profile of the present invention
Fig. 3 is the working state figure of the present invention before not having wearing and tearing
Fig. 4 is work of the present invention, and there has been the state diagram after the wearing and tearing a period of time end
Fig. 5 is the limiting condition figure that the present invention can tilt
Among the figure, 1 axle sleeve, 2 pins, 3 bearing pins
4 scraper components, 5 installing holes
The specific embodiment
As shown in Figure 1 and Figure 2, the off-centre right-angle screeding device that is used for thinfilm rotary evaporator or cooler of the present invention is made up of axle sleeve 1, pin 2, bearing pin 3 and scraper component 4; Axle sleeve 1 is a column structure, which is provided with to be provided with installing hole 5, and axle sleeve 1 is fixed on the rotor main shaft of evaporimeter or cooler, and the alignment of shafts is crossed in its fixed bit offset; Scraper component 4 is the laminated structure of wedge shape for the edge, and bearing pin 3 passes in the installing hole 5 that scraper component 4 is embedded into axle sleeve 1 scraper component 4 is connected with axle sleeve 1; Pin 2 passes axle sleeve 1 and bearing pin 3, is used to locate the relative position of axle sleeve 1 and bearing pin 3.
The angle of described scraper component 4 and axle sleeve 1 becomes 90 °, sees Fig. 2.
Described bearing pin 3 is a matched in clearance with the installing hole 5 of axle sleeve 1.
Can see that from Fig. 3 to Fig. 5 the alignment of shafts with respect to cooling evaporation equipment evaporimeter rotor after scraper component 4 and the spindle mounted is eccentric, its eccentric purpose is exactly that the width of scraper plate is controlled in the suitable scope.If the width of scraper plate is excessive, then the cost of scraper plate can be multiplied, and the rigidity of whole scraper plate can reduce greatly, thereby influences result of use; If the width of scraper plate is too small, then the adjusting leeway of scraper plate wear extent can significantly reduce again, thereby has shortened the life-span of scraper plate.
Fig. 3 is the duty of this screeding device before not having wearing and tearing, when this moment, scraper plate rotated in liquid, under the acting in conjunction of liquid resistance and centrifugal force, cylinder inboard wall can be close in the scraper plate end, thereby scraper plate is fully contacted with inner tube wall, played the effect of augmentation of heat transfer, this structure has made full use of the resistance of liquid.
A period of time rearward end that Fig. 4 is the work of this screeding device has had the state after the wearing and tearing, this moment, scraper plate was under the acting in conjunction of liquid resistance and centrifugal force, gap by bearing pin and installing hole makes the scraper plate run-off the straight, thereby screeding device is fully contacted with inner tube wall.
Fig. 5 is the limiting condition that this screeding device can tilt, and this moment, the scraper plate end may wear to maximum, should consider to change scraper plate.
Claims (3)
1. off-centre right-angle screeding device that is used for thinfilm rotary evaporator or cooler, it is characterized in that: it is made up of axle sleeve, pin, bearing pin and scraper component; Axle sleeve is a column structure, which is provided with installing hole, and axle sleeve is fixed on the rotor main shaft of evaporimeter or cooler, and the alignment of shafts is crossed in its fixed bit offset; Scraper component is that the edge is the laminated structure of wedge shape, and bearing pin passes in the installing hole that scraper component is embedded into axle sleeve scraper component is connected with axle sleeve; Pin passes axle sleeve and bearing pin, is used to locate the relative position of axle sleeve and bearing pin.
2. the off-centre right-angle screeding device that is used for thinfilm rotary evaporator or cooler according to claim 1 is characterized in that: the angle of described scraper component and axle sleeve becomes 90 °.
3. the off-centre right-angle screeding device that is used for thinfilm rotary evaporator or cooler according to claim 1 is characterized in that: the installing hole of described bearing pin and axle sleeve is a matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101663295A CN101428184B (en) | 2007-11-06 | 2007-11-06 | Off-centre right-angle scratch board apparatus for rotary thin-film evaporator or cooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101663295A CN101428184B (en) | 2007-11-06 | 2007-11-06 | Off-centre right-angle scratch board apparatus for rotary thin-film evaporator or cooling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101428184A CN101428184A (en) | 2009-05-13 |
| CN101428184B true CN101428184B (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101663295A Active CN101428184B (en) | 2007-11-06 | 2007-11-06 | Off-centre right-angle scratch board apparatus for rotary thin-film evaporator or cooling apparatus |
Country Status (1)
| Country | Link |
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| CN (1) | CN101428184B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233513B (en) * | 2015-10-20 | 2017-05-24 | 无锡力马化工机械有限公司 | Film evaporator with fast-assembly type elastic scraping plate device |
| CN106693422A (en) * | 2017-02-17 | 2017-05-24 | 无锡力马化工机械有限公司 | Rotary film evaporator with heavy fixed gap moveable type scraper device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2850682Y (en) * | 2005-07-19 | 2006-12-27 | 上海森松环境技术工程有限公司 | Moveable scraper adjustment device of thin-film evaporator |
| CN101053697A (en) * | 2007-04-20 | 2007-10-17 | 张亚宇 | Rotating scraper evaporator |
-
2007
- 2007-11-06 CN CN2007101663295A patent/CN101428184B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2850682Y (en) * | 2005-07-19 | 2006-12-27 | 上海森松环境技术工程有限公司 | Moveable scraper adjustment device of thin-film evaporator |
| CN101053697A (en) * | 2007-04-20 | 2007-10-17 | 张亚宇 | Rotating scraper evaporator |
Non-Patent Citations (1)
| Title |
|---|
| JP特开平7-8702A 1995.01.13 |
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| Publication number | Publication date |
|---|---|
| CN101428184A (en) | 2009-05-13 |
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