CN101844202B - Two-stage continuous rubbing sand regenerator - Google Patents
Two-stage continuous rubbing sand regenerator Download PDFInfo
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- CN101844202B CN101844202B CN2010101972426A CN201010197242A CN101844202B CN 101844202 B CN101844202 B CN 101844202B CN 2010101972426 A CN2010101972426 A CN 2010101972426A CN 201010197242 A CN201010197242 A CN 201010197242A CN 101844202 B CN101844202 B CN 101844202B
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Abstract
The invention relates to a two-stage continuous rubbing sand regenerator. A second-stage air inlet box is fixed on a lower-layer base; a high-pressure fan is installed beside the lower-layer base; the air outlet of the high-pressure fan is communicated with the inside of the second-stage air inlet box through an air quantity adjusting valve; a second-stage rubbing regeneration chamber is arranged at the upper part of the second-stage air inlet box, and a rubbing regeneration mechanism is arranged in the second-stage rubbing regeneration chamber; a first-stage air inlet box is arranged above the second-stage rubbing regeneration chamber and fixed on an upper-layer base; the air outlet of the high-pressure fan is communicated with the inside of a first-stage air inlet box through the air quantity adjusting valve and a high-pressure air pipe; a first-stage rubbing regeneration chamber is arranged at the upper part of the first-stage air inlet box, and a rubbing regeneration mechanism is arranged in the first-stage rubbing regeneration chamber; a first-stage sand outlet at the bottom of the first-stage rubbing regeneration chamber is communicated with the second-stage sand inlet; and an air separation grading cabin is arranged at the upper part of the first-stage rubbing regeneration chamber, and a sand inlet is opened at the top of the air separation grading cabin. The invention has the advantages of rational structure, simple process, small occupation space, low energy consumption and good processing effect.
Description
Technical field
The invention belongs to the apparatus for casting technical field, relate to the regenerating used reuse equipment in a kind of sand reclamation technology, specifically is a kind of two-stage continuous rubbing sand regenerator.
Background technology
In the apparatus for casting industry, molding sand is the very big raw material of a kind of consumption.Molding sand is after using repeatedly, and because of its surperficial clay moding property destruction, the sand quality reduces greatly, thereby causes defectives such as bleb, sand holes and rough surface.For guaranteeing casting quality, often to add fresh sand at the molding sand back warp, eliminate some old sands, to eliminate can be utilized once more after the waste molding sand that gets off is handled through reclaiming and make casting mold, this process that is recovered Regeneration Treatment is called as the reclaiming of molding sand.Molding sand sand renovation process commonly used is to adopt mechanical dry method regeneration technology in the prior art, and mainly there is disadvantage in this technology:: noise is bigger, and the dynamic balancing factor can't resolve, or the like.
Summary of the invention
The objective of the invention is to overcome the deficiency that exists in the prior art, provide a kind of rational in infrastructure, handling process simple, take up space less, energy consumption is low, the two-stage continuous rubbing sand regenerator good to the old sand treatment effect.
According to technical scheme provided by the invention, said two-stage continuous rubbing sand regenerator comprises support, one-level inlet box, one-level rubbing regeneration room, secondary inlet box, secondary rubbing regeneration room, high pressure positive blower, selection by winnowing classification storehouse, vertical flow distribution plate, the horizontal flow distribution plate of one-level and the horizontal flow distribution plate of secondary;
Said support is the double-decker that is made up of lower floor's support and upper strata support, and the secondary inlet box is fixed on lower floor's support, and high pressure positive blower is installed in lower floor's support side, and the air outlet of high pressure positive blower is communicated to secondary inlet box inside through volume damper;
Said secondary rubbing regeneration room is arranged on secondary inlet box top; Be separated by through secondary boiling orifice plate between secondary rubbing regeneration room and the secondary inlet box; Be provided with the rubbing regeneration sector in the secondary rubbing regeneration room; The bottom of secondary rubbing regeneration room offers sand export, and the top of secondary rubbing regeneration room offers the secondary sand inlet;
Said one-level inlet box is arranged on secondary rubbing regeneration room top and is fixed on the support of upper strata, and the air outlet of high pressure positive blower is communicated to one-level inlet box inside through volume damper and high-pressure air hose;
Said one-level rubbing regeneration room is arranged on one-level inlet box top; Be separated by through one-level boiling orifice plate between one-level rubbing regeneration room and the one-level inlet box; Be provided with the rubbing regeneration sector in the one-level rubbing regeneration room; The bottom of one-level rubbing regeneration room offers the one-level sand export, and this one-level sand export is connected with said secondary sand inlet;
Said one-level rubbing regeneration room top is provided with coupled logical selection by winnowing classification storehouse, on selection by winnowing classification storehouse, is provided with the inlet scoop, and this inlet scoop is communicated to dust pelletizing system; Top in selection by winnowing classification storehouse offers sand inlet;
Said vertical flow distribution plate is arranged in the selection by winnowing classification storehouse, vertical flow distribution plate be positioned at sand inlet under; The horizontal flow distribution plate of said one-level is arranged in selection by winnowing classification storehouse and the one-level rubbing regeneration room, and the horizontal flow distribution plate of one-level is positioned at the below of vertical flow distribution plate, and the horizontal flow distribution plate of polylith one-level is parallel to each other, height is crisscross arranged; The horizontal flow distribution plate of said secondary is arranged in the secondary rubbing regeneration room, the horizontal flow distribution plate of secondary be positioned at the secondary sand inlet under.
As further improvement of the present invention; Said rubbing regeneration sector comprises the squeezer that at least two structures are identical, laterally arrange; Said squeezer comprises motor, rotating shaft and stranding emery wheel, and motor is fixed on a side of upper strata support, lower floor's support, and rotating shaft is installed on one-level rubbing regeneration room, the secondary rubbing regeneration room; Rotating shaft utilizes shaft coupling to link to each other with the output shaft of motor, a plurality of parallel stranding emery wheels of fixed installation in the said rotating shaft.
As further improvement of the present invention, the bottom of said high pressure positive blower is provided with beam.
As further improvement of the present invention; Also be provided with the dedust blower fan on the said two-stage continuous rubbing sand regenerator; The dedust blower fan is fixed on the outer wall of one-level rubbing regeneration room through the blower fan mount pad; The air outlet of dedust blower fan is communicated to the one-level inlet box through first airduct through the first adjustable air intake gate, and the air outlet of dedust blower fan is communicated to the secondary inlet box through second airduct through the second adjustable air intake gate.
As further improvement of the present invention, said sand inlet is fitted with pneumatic door.
As further improvement of the present invention, the quantity of said squeezer is 2～5.
As further improvement of the present invention, each the squeezer top in the said rubbing regeneration sector is provided with the refraction baffle plate of an arc.
As further improvement of the present invention, each both sides, squeezer below in the said rubbing regeneration sector all are provided with the sand block plate of inclination.
As further improvement of the present invention, the blowing direction of said dedust blower fan in one-level inlet box, secondary inlet box perpendicular to the blowing direction of high pressure positive blower in one-level inlet box, secondary inlet box.
The present invention compared with prior art, advantage is: rational in infrastructure, utilize the mechanical stranding of twin-stage mill, supporting dust pelletizing system and blower system utilize the air curtain of its generation that old sand is carried out selection by winnowing, the dedust striping, the improvement old sand recovers the roughing sand performance.Handling process is simple, can need select continuous operation or discontinuous operation by actual process, take up space less, energy consumption is low, good to the old sand treatment effect, be applicable to the regenerating used reuse that routine casting is produced.
Description of drawings
Fig. 1 is a structural front view of the present invention.
Fig. 2 is the side view of Fig. 1.
Description of reference numerals: 1-lower floor support; 2-secondary inlet box; 3-secondary rubbing regeneration room; 4-upper strata support; 5-one-level inlet box; 6-one-level rubbing regeneration room; 7-motor installing rack; The 8-motor; The 9-shaft coupling; The 10-rotating shaft; 11-rubs emery wheel with the hands; The horizontal flow distribution plate of 12-one-level; 13-selection by winnowing classification storehouse; The 14-sand inlet; The 15-pneumatic door; 16-indulges flow distribution plate; The 17-inlet scoop; 18-one-level boiling orifice plate; 19-one-level sand export; 20-secondary sand inlet; The 21-high-pressure air hose; The 22-high pressure positive blower; The 23-beam; The 24-volume damper; 25-secondary boiling orifice plate; The 26-sand export; 27-reflects baffle plate; 28-dedust blower fan; 29-blower fan mount pad; 30-sand block plate; 31-first airduct; The 32-first adjustable air intake gate; The horizontal flow distribution plate of 33-secondary; 34-second airduct; The 35-second adjustable air intake gate.
The specific embodiment
Below in conjunction with concrete accompanying drawing and embodiment the present invention is described further.
As shown in the figure: said two-stage continuous rubbing regenerating device mainly is made up of support, one-level inlet box 5, one-level rubbing regeneration room 6, secondary inlet box 2, secondary rubbing regeneration room 3, high pressure positive blower 22, selection by winnowing classification storehouse 13, vertical flow distribution plate 16, the horizontal flow distribution plate 12 of one-level and the horizontal flow distribution plate 33 of secondary.Said support is the double-decker that is made up of lower floor's support 1 and upper strata support 4; Secondary inlet box 2 is fixed on lower floor's support 1; High pressure positive blower 22 is installed in lower floor's support 1 side, and the air outlet of high pressure positive blower 22 is communicated to secondary inlet box 2 inside through volume damper 24; Said secondary rubbing regeneration room 3 is arranged on secondary inlet box 2 tops; Be separated by through secondary boiling orifice plate 25 between secondary rubbing regeneration room 3 and the secondary inlet box 2; Be provided with the rubbing regeneration sector in the secondary rubbing regeneration room 3; The bottom of secondary rubbing regeneration room 3 offers sand export 26, and the top of secondary rubbing regeneration room 3 offers secondary sand inlet 20; Said one-level inlet box 5 is arranged on secondary rubbing regeneration room 3 tops and is fixed on the upper strata support 4, and the air outlet of high pressure positive blower 22 is communicated to one-level inlet box 5 inside through volume damper 24 and high-pressure air hose 21; Said one-level rubbing regeneration room 6 is arranged on one-level inlet box 5 tops; Be separated by through one-level boiling orifice plate 18 between one-level rubbing regeneration room 6 and the one-level inlet box 5; Be provided with the rubbing regeneration sector in the one-level rubbing regeneration room 6; The bottom of one-level rubbing regeneration room 6 offers one-level sand export 19, and this one-level sand export 19 is connected with said secondary sand inlet 20; Said one-level rubbing regeneration room 6 tops are provided with coupled logical selection by winnowing classification storehouse 13, on selection by winnowing classification storehouse 13, are provided with inlet scoop 17, and this inlet scoop 17 is communicated to dust pelletizing system; Top in selection by winnowing classification storehouse 13 offers sand inlet 14, and this sand inlet 14 preferably is fitted with pneumatic door 15; Said vertical flow distribution plate 16 is arranged in the selection by winnowing classification storehouse 13, vertical flow distribution plate 16 be positioned at sand inlet 14 under; The horizontal flow distribution plate 12 of said one-level is arranged in selection by winnowing classification storehouse 13 and the one-level rubbing regeneration room 6, and the horizontal flow distribution plate 12 of one-level is positioned at the below of vertical flow distribution plate 16, and the horizontal flow distribution plate 12 of polylith one-level is parallel to each other, height is crisscross arranged; The horizontal flow distribution plate 33 of said secondary is arranged in the secondary rubbing regeneration room 3, the horizontal flow distribution plate 33 of secondary be positioned at secondary sand inlet 20 under.
Like Fig. 1, shown in Figure 2; Said rubbing regeneration sector generally comprises the squeezer that 2～5 structures are identical, laterally arrange; Illustrated embodiment is provided with two squeezers; Each squeezer includes motor 8, rotating shaft 10 and rubs emery wheel 11 with the hands, and motor 8 is fixed on a side of upper strata support 4, lower floor's support 1 through motor installing rack 7, and rotating shaft 10 is installed on one-level rubbing regeneration room 6, the secondary rubbing regeneration room 3; Rotating shaft 10 utilizes shaft coupling 9 to link to each other with the output shaft of motor 8, a plurality of parallel stranding emery wheels 11 of fixed installation in the said rotating shaft 10.Rub the mill effect with the hands in order further to improve, each squeezer top is provided with the refraction baffle plate 27 of an arc.Each both sides, squeezer below all is provided with the sand block plate 30 of inclination, and sand block plate 30 can prevent the molding sand direct current on the one hand and go out, can prevent that on the other hand molding sand from accumulating in the place, dead angle.
As shown in Figure 1, because high pressure positive blower 22 can produce more violent vibration in the rotation at a high speed, the present invention is provided with the beam 23 that is made by elastomeric material through the bottom at high pressure positive blower 22, to absorb vibration damping, noise abatement, reaches the purpose that reduces noise.
Like Fig. 1, shown in Figure 2; In processing procedure; Have the residual of sand or ashes inevitably in the one-level inlet box 5, secondary inlet box 2 and on the one-level boiling orifice plate 18, secondary boiling orifice plate 25; In order to guarantee treatment effect, also be provided with dedust blower fan 28 on the said two-stage continuous rubbing sand regenerator, dedust blower fan 28 is fixed on the outer wall of one-level rubbing regeneration room 6 through blower fan mount pad 29; The air outlet of dedust blower fan 28 is communicated to one-level inlet box 5 through first airduct 31 through the first adjustable air intake gate 32, and the air outlet of dedust blower fan 28 is communicated to secondary inlet box 2 through second airduct 34 through the second adjustable air intake gate 35.The blowing direction of said dedust blower fan 28 in one-level inlet box 5, secondary inlet box 2 perpendicular to the blowing direction of high pressure positive blower 22 in one-level inlet box 5, secondary inlet box 2.Though high pressure positive blower 22 also can reach the effect of blowing dedust, the energy consumption during high pressure positive blower 22 operation is higher, be used for merely blowing, deashing not only wastes energy, and blowing direction does not still change, and blows, the effect of deashing neither be very desirable.And the dedust blower fan of setting up 28 not only energy consumption is lower, and blowing direction also changes, and can improve the cleaning efficiency to one-level boiling orifice plate 18, secondary boiling orifice plate 25 further.
The course of work and the operation principle of said two-stage continuous rubbing sand regenerator are following:
Old sand gets in the selection by winnowing classification storehouses 13 through sand inlet 14, through selection by winnowing classification storehouse 13, the effect of vertical flow distribution plate 16, the horizontal flow distribution plate 12 of one-level, old sand is evenly distributed, and drops into then in the one-level rubbing regeneration room 6.Move in the rubbing regeneration sector in the one-level rubbing regeneration room 6, motor 8 runnings drive rotating shaft 10 and rub emery wheel 11 rotation at a high speed with the hands, and the direction of rotation of each motor 8 can be rotated or forward rotation according to arts demand in opposite directions.Old sand carries out mutual rubbing, collision convection current under the stranding emery wheel 11 of rotation at a high speed drives, and under the effect of refraction baffle plate 27, further realizes the effect of rubbing.Old sand gets into secondary sand inlet 20 by one-level sand export 19 after rubbing the mill processing with the hands through one-level rubbing regeneration room 6 interior rubbing regeneration sectors, is distributed in the secondary rubbing regeneration room 3 through the horizontal flow distribution plate 33 of secondary, carries out secondary stranding mill and handles.Rub with the hands in the mill processing procedure at above-mentioned one-level, secondary, high pressure positive blower 22 blasts quantitative air quantity and gets in one-level inlet box 5, the secondary inlet box 2, and the size of air quantity is distributed control through volume damper 24 and high-pressure air hose 21 respectively.High-pressure blast gets in one-level rubbing regeneration room 6, the secondary rubbing regeneration room 3 via the space on one-level boiling orifice plate 18, the secondary boiling orifice plate 25 respectively, and forms sand gas and mix with one-level rubbing regeneration room 6, secondary rubbing regeneration room 3 interior old sands.The air-flow that has dust that in processing procedure, produces directly in the dust pelletizing system via the 17 entering workshops, inlet scoop on the selection by winnowing classification storehouse 13, is realized the purpose of dedust, striping.Old sand through Regeneration Treatment emits through sand export 26, has promptly accomplished a handling process.
Claims (9)
1. two-stage continuous rubbing sand regenerator is characterized in that: this regenerating device comprises support, one-level inlet box (5), one-level rubbing regeneration room (6), secondary inlet box (2), secondary rubbing regeneration room (3), high pressure positive blower (22), selection by winnowing classification storehouse (13), vertical flow distribution plate (16), the horizontal flow distribution plate of one-level (12) and the horizontal flow distribution plate of secondary (33);
Said support is the double-decker that is made up of lower floor's support (1) and upper strata support (4); Secondary inlet box (2) is fixed on lower floor's support (1); High pressure positive blower (22) is installed in lower floor's support (1) side, and the air outlet of high pressure positive blower (22) is communicated to secondary inlet box (2) inside through volume damper (24);
Said secondary rubbing regeneration room (3) is arranged on secondary inlet box (2) top; Be separated by through secondary boiling orifice plate (25) between secondary rubbing regeneration room (3) and the secondary inlet box (2); Be provided with the rubbing regeneration sector in the secondary rubbing regeneration room (3); The bottom of secondary rubbing regeneration room (3) offers sand export (26), and the top of secondary rubbing regeneration room (3) offers secondary sand inlet (20);
Said one-level inlet box (5) is arranged on secondary rubbing regeneration room (3) top and is fixed on the upper strata support (4), and the air outlet of high pressure positive blower (22) is communicated to one-level inlet box (5) inside through volume damper (24) and high-pressure air hose (21);
Said one-level rubbing regeneration room (6) is arranged on one-level inlet box (5) top; Be separated by through one-level boiling orifice plate (18) between one-level rubbing regeneration room (6) and the one-level inlet box (5); Be provided with the rubbing regeneration sector in the one-level rubbing regeneration room (6); The bottom of one-level rubbing regeneration room (6) offers one-level sand export (19), and this one-level sand export (19) is connected with said secondary sand inlet (20);
Said one-level rubbing regeneration room (6) top is provided with coupled logical selection by winnowing classification storehouse (13), on selection by winnowing classification storehouse (13), is provided with inlet scoop (17), and this inlet scoop (17) are communicated to dust pelletizing system; Offer sand inlet (14) at the top in selection by winnowing classification storehouse (13);
Said vertical flow distribution plate (16) is arranged in the selection by winnowing classification storehouse (13), vertical flow distribution plate (16) be positioned at sand inlet (14) under; The horizontal flow distribution plate of said one-level (12) is arranged in selection by winnowing classification storehouse (13) and the one-level rubbing regeneration room (6), and the horizontal flow distribution plate of one-level (12) is positioned at the below of vertical flow distribution plate (16), and the horizontal flow distribution plate of polylith one-level (12) is parallel to each other, height is crisscross arranged; The horizontal flow distribution plate of said secondary (33) is arranged in the secondary rubbing regeneration room (3), the horizontal flow distribution plate of secondary (33) be positioned at secondary sand inlet (20) under.
2. two-stage continuous rubbing sand regenerator as claimed in claim 1; It is characterized in that: said rubbing regeneration sector comprises the squeezer that at least two structures are identical, laterally arrange; Said squeezer comprises motor (8), rotating shaft (10) and rubs emery wheel (11) with the hands; Motor (8) is fixed on a side of upper strata support (4), lower floor's support (1); Rotating shaft (10) is installed on one-level rubbing regeneration room (6), the secondary rubbing regeneration room (3), and rotating shaft (10) utilizes shaft coupling (9) to link to each other with the output shaft of motor (8), and a plurality of parallel stranding emery wheels (11) of fixed installation are gone up in said rotating shaft (10).
3. two-stage continuous rubbing sand regenerator as claimed in claim 1 is characterized in that: the bottom of said high pressure positive blower (22) is provided with beam (23).
4. two-stage continuous rubbing sand regenerator as claimed in claim 1; It is characterized in that: also be provided with dedust blower fan (28) on the said two-stage continuous rubbing sand regenerator; Dedust blower fan (28) is fixed on the outer wall of one-level rubbing regeneration room (6) through blower fan mount pad (29); The air outlet of dedust blower fan (28) is communicated to one-level inlet box (5) through first airduct (31) through the first adjustable air intake gate (32), and the air outlet of dedust blower fan (28) is communicated to secondary inlet box (2) through second airduct (34) through the second adjustable air intake gate (35).
5. two-stage continuous rubbing sand regenerator as claimed in claim 1 is characterized in that: said sand inlet (14) is fitted with pneumatic door (15).
6. two-stage continuous rubbing sand regenerator as claimed in claim 2 is characterized in that: the quantity of said squeezer is 2～5.
7. two-stage continuous rubbing sand regenerator as claimed in claim 2 is characterized in that: each the squeezer top in the said rubbing regeneration sector is provided with the refraction baffle plate (27) of an arc.
8. two-stage continuous rubbing sand regenerator as claimed in claim 2 is characterized in that: each both sides, squeezer below in the said rubbing regeneration sector all are provided with the sand block plate (30) of inclination.
9. two-stage continuous rubbing sand regenerator as claimed in claim 4 is characterized in that: the blowing direction of said dedust blower fan (28) in one-level inlet box (5), secondary inlet box (2) is perpendicular to the blowing direction of high pressure positive blower (22) in one-level inlet box (5), secondary inlet box (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101972426A CN101844202B (en) | 2010-06-02 | 2010-06-02 | Two-stage continuous rubbing sand regenerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101972426A CN101844202B (en) | 2010-06-02 | 2010-06-02 | Two-stage continuous rubbing sand regenerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101844202A CN101844202A (en) | 2010-09-29 |
| CN101844202B true CN101844202B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101972426A Expired - Fee Related CN101844202B (en) | 2010-06-02 | 2010-06-02 | Two-stage continuous rubbing sand regenerator |
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| CN (1) | CN101844202B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143674A (en) * | 2013-03-26 | 2013-06-12 | 无锡锡南铸造机械有限公司 | Three-roll rub sand recycler |
| CN103350188B (en) * | 2013-07-05 | 2015-12-23 | 玉林市兰科铸造环保设备有限公司 | Mixed type cast waste sand cleans combination cylinder |
| CN103722123A (en) * | 2013-12-31 | 2014-04-16 | 常州市卓信机电设备制造有限公司 | Boiling device for self-hardening sand mixer |
| CN103736911B (en) * | 2014-01-27 | 2016-06-08 | 无锡锡南铸造机械股份有限公司 | The adjustable bucket wheel regenerating device of molding sand demoulding rate |
| CN111531122A (en) * | 2020-05-13 | 2020-08-14 | 安徽华颂再生资源回收有限公司 | Powerful rubbing and grinding regenerator for waste molding sand |
| EP4060265A1 (en) | 2021-03-18 | 2022-09-21 | Vestel Elektronik Sanayi ve Ticaret A.S. | Method for reducing the number of microorganisms on a surface of an object, an apparatus therefore and a refrigerator with such apparatus |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62227549A (en) * | 1986-03-29 | 1987-10-06 | Yamakawa Sangyo Kk | Recycling treatment system for waste sand of green sand mold |
| JP2521765B2 (en) * | 1987-07-03 | 1996-08-07 | 白土 允之 | Foundry sand reclamation equipment |
| JP5110984B2 (en) * | 2006-06-29 | 2012-12-26 | 花王株式会社 | Recycled casting sand manufacturing method |
| CN100444987C (en) * | 2006-12-21 | 2008-12-24 | 于彦奇 | Mechanically rubbing resin sand regenerating machine |
| CN201098722Y (en) * | 2007-10-22 | 2008-08-13 | 齐齐哈尔轨道交通装备有限责任公司 | Casting sand regenerating device |
| CN201154390Y (en) * | 2008-02-04 | 2008-11-26 | 荆州市泰盟实业有限公司 | Integration high-efficiency used sand regenerating device |
| CN201669373U (en) * | 2010-06-02 | 2010-12-15 | 无锡锡南铸造机械有限公司 | Two stage continuous type rubbing sand regeneration machine |
-
2010
- 2010-06-02 CN CN2010101972426A patent/CN101844202B/en not_active Expired - Fee Related
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Granted publication date: 20120125 Termination date: 20140602 |