WO1999028053A1 - Siebreiniger für plansichter - Google Patents
Siebreiniger für plansichter Download PDFInfo
- Publication number
- WO1999028053A1 WO1999028053A1 PCT/EP1998/007671 EP9807671W WO9928053A1 WO 1999028053 A1 WO1999028053 A1 WO 1999028053A1 EP 9807671 W EP9807671 W EP 9807671W WO 9928053 A1 WO9928053 A1 WO 9928053A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screen
- cleaning heads
- cleaner
- screen cleaner
- sieve
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
- B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
- B07B1/50—Cleaning
- B07B1/52—Cleaning with brushes or scrapers
- B07B1/522—Cleaning with brushes or scrapers with brushes
Definitions
- the invention relates to a sieve frame for plan sifter and sieve cleaner with brush-like or knob-like cleaning heads for such a sieve frame.
- Sieve cleaners are placed in the sieve frames of plan sifters so that they move along with the shaking movement of the sieve under the sieve clothing and come into contact with the cleaning heads with their cleaning heads in order to clean them.
- the cleaning heads are not in constant contact with the screen covering, but the cleaning effect is essentially due to the fact that the cleaning heads strike the screen covering.
- This is achieved, for example, in that the sieve cleaner is supported with one foot on a corrugated grating arranged parallel under the sieve covering and is thereby set in vibration as it moves over the corrugated grille.
- a sieve cleaner in the form of a three-armed star in which the cleaning heads are arranged in the region of the free ends of the three cantilevered arms arranged at angular intervals of approximately 120 degrees.
- This sieve cleaner is supported on the smooth sieve base with one foot in such a way that it performs rocking movements when the sieve is shaken and thus strikes the sieve cover.
- the foot can engage in a floor scraper, which supports the removal of the sieve through to an ejection slot formed at the edge of the sieve frame.
- This known screen cleaner has the advantage that it enables a low overall height of the screen frame and can penetrate well into the corners of the screen frame with its projecting arms, so that the screen covering is also cleaned well in the corner areas.
- the object of the invention is to provide sieve frames and sieve cleaners with which an intensive yet gentle cleaning of the sieve covering can be achieved.
- the cleaning heads are resiliently biased against the sieve covering, so that any dimensional tolerances in the distance between the sieve bottom and the sieve covering, for example as a result of a slight curvature of the sieve bottom, do not lead to jamming of the sieve cleaner.
- the resilient bias can be achieved, for example, in that the foot is offset in its entirety from the row of cleaning heads, so that the part of the screen cleaner carrying the cleaning heads can dodge downwards.
- the resilient prestress can also be achieved by means of elastic elements, for example by means of the self-elastic design of the projecting arms which carry the cleaning heads, or by means of a spring integrated in the foot.
- the cleaning effect is not achieved by blows against the screen covering, but rather by the cleaning heads sweeping over the screen covering.
- the avoidance of blows against the fabric is more than offset by the fact that all cleaning heads are constantly effective.
- Another advantage is that the cleaning heads are worn more evenly.
- the predominant part of the cleaning heads is arranged essentially in a row, and one is not or at least less closely spaced with cleaning heads protrudes from one side of the row of cleaning heads.
- the screen cleaner hits the edge of the screen frame, it can align itself so that the row of cleaning heads is almost parallel to the edge of the screen frame. In this way, a relatively large area of the screen covering is swept by the cleaning heads near the edge, while the spacer which then projects inward is less or not at all effective for cleaning. In this way, a more uniform cleaning of the screen covering is achieved on a statistical average and excessive wear of the screen covering in the area of the center of the screen is avoided.
- the spacer is preferably not equipped with cleaning heads and is arranged in a T-shape with respect to the row of cleaning heads, and the foot with which the screen cleaner is supported on the smooth screen bottom and which can also serve as a floor scraper is designed under the spacer, that he touches the sieve bottom at at least two points. In this way, the range of motion of the screen cleaner is restricted in such a way that the entire row of cleaning heads is kept in constant contact with the screen covering.
- the sieve frames of a plan sifter usually have an approximately square plan.
- a particularly uniform cleaning effect can be achieved if the length of the screen cleaner, measured from the row of cleaning heads to the free end of the spacer, is approximately half the edge length of the screen frame.
- Figure 1 shows a screen cleaner in plan view
- Figure 2 shows the screen cleaner of Figure 1 in a side view
- Figure 3 shows the screen cleaner according to Figures 1 and 2 in a view from below;
- Figure 4 shows the floor plan of a screen frame of a plan sifter with a screen cleaner according to another embodiment
- FIG. 5 shows a vertical section through the screen frame according to FIG. 4;
- FIG. 6 shows a partial section through a screen cleaner according to a further exemplary embodiment
- Figure 7 shows a longitudinal section of a screen cleaner according to another embodiment
- Figure 8 shows a screen cleaner according to another embodiment in plan view.
- the screen cleaner 10 shown in FIGS. 1 to 3 has an approximately T-shaped body made of rubber-elastic material.
- This body 12 forms two cantilevered arms 14 which are aligned substantially in a line and which carry a plurality of cleaning heads 16 arranged in a row on the upper side.
- the cleaning heads 16 can be formed by knobs formed in one piece with the body or optionally also by tufts of bristles inserted into the body 12.
- the body 12 also forms a spacer 18, which is arranged in a T-shape to the row of cleaning heads 16 and opposite the cantilevered ones Poor 14 is slightly down.
- stiffening ribs 20 are provided which connect to one end of the spacer 18.
- the spacer 18 has an upstanding projection 22, the upper end of which, however, is lower than the upper ends of the cleaning heads 16.
- a foot of the screen cleaner is formed by two cams 24, 26 formed on the underside of the spacer 18.
- the cam 24 has a circular plan and is located near the end of the spacer 18 facing the arms 14, while the cam 26 has an elongated plan and projects axially beyond the opposite end of the spacer 18.
- FIGS. 4 and 5 show a modified exemplary embodiment in which the arms 14 are connected to one another in a straight line and carry a continuous straight row of cleaning heads 16. Otherwise, the screen cleaner according to FIGS. 4 and 5 has the same structure as the screen cleaner according to FIGS. 1 to 3.
- FIGS. 4 and 5 also show a sieve frame 28 of a plan sifter.
- This sieve frame has a smooth bottom 30 and is delimited by four walls 32, 34.
- the sieve frame 28 has a sieve covering 36, which is arranged at a distance parallel to the bottom 30.
- the wall 34 of the sieve frame forms with the bottom 30 an ejection slot 38 for the sieve diarrhea.
- the screen cleaner 10 is supported with its cams 24, 26 aligned in a straight line on the smooth bottom 30 of the screen frame and is adjusted in height to the screen frame in such a way that all cleaning heads 16 rest on the underside of the screen covering 36, as in FIG 5 can be seen. Since the cams 24, 26 define a line of contact with the floor 30 that is perpendicular to the row of cleaning heads 16, the screen cleaner 10 itself could tip over this line of contact. However, this is prevented by the cleaning heads 16 bearing against the screen covering. The cams 24 therefore slide with their flat underside over the surface of the floor 30 and can thus act as a floor clearer. The cam 26 is also dimensioned in height so that it can also enter the output slot 38, as shown in Figure 5.
- the screen cleaner can tilt around the cam 24. Usually, however, this is prevented by the center of gravity S of the screen cleaner being offset somewhat in the direction of the cam 26 with respect to the cam 24. If the screen cleaner should tip over in exceptional cases, for example in the event of violent vibrations, the pivoting range is limited by the fact that the projection 22 is based on the screen covering. The screen cleaner 10 can also tip over if the distance between the bottom 30 and the screen covering 36 has changed due to warping or arching of the bottom 30. In this case, the tiltable support of the screen cleaner prevents jamming between the floor and the screen covering. A certain elastic compliance of the arms 14 can also contribute to this.
- Figure 6 shows a variant in which the cam 24 is supported by a spring 40 on the body 12 of the screen cleaner. In this way, the elastic pretension with which the cleaning heads 16 press against the screen covering 36 can be set very precisely.
- the sieve frame 28 has an approximately square plan with an edge length a.
- the length L of the screen cleaner 10, measured from the row of cleaning heads 16 to the free end of the spacer 18, is approximately a / 2.
- the sieve frame 28 is set in a shaking movement, so that the sieve cleaner 10 executes erratic movements on the floor 30.
- the cleaning heads 16 can clean the left half of the screen covering to the edge, but they cannot reach the right half of the screen covering, since the spacer 18 then abuts the wall 34 of the screen frame. If the screen cleaner has the opposite orientation, only the right half of the screen covering can be cleaned accordingly. Since the length L of the screen cleaner is approximately half that Edge length of the screen frame, there is neither a large gap nor a significant overlap between the two areas of screen covering, which can be cleaned at different orientations.
- orientations of the screen cleaner which are rotated by 90 degrees with respect to the orientation in FIG. 4. Since the orientations of the screen cleaner vary statistically, an approximately uniform cleaning and consequently also an approximately uniform wear of the screen covering is achieved on average over the entire surface of the screen covering. Due to the statistical nature of these considerations, high accuracy when dimensioning the length L is not important.
- Figure 7 shows a further embodiment of a screen cleaner 10, which is constructed similarly to the screen cleaner of Figure 6, but in which the spring 40, which supports the cam 24, is not designed as a coil spring, but as an elongated leaf spring, which is in an elongated recess 42 lies on the underside of the body 12.
- FIGS. 8 and 9 finally show a screen cleaner 10, the body 12 of which, like in conventional screen cleaners, is designed as a flat plate which has a plan in the shape of an equilateral triangle with convexly rounded sides and is equipped with cleaning heads 16 on the entire peripheral edge.
- a cylindrical bushing 44 is formed in the center of the underside of the body 12, in which a piston forming the base 46 of the screen cleaner is guided so that it can move vertically.
- the spring 40 acting between the foot 46 and the body 12 is again designed as a helical spring and accommodated in the bushing 44.
- the sieve cleaner according to FIGS. 8 and 9 is also supported with its foot 46 on the smooth sieve bottom, so that the cleaning heads 16 are pressed lightly against the sieve covering by the spring 40. Thus, all cleaning heads 16 are always effective. If the sieve bottom has warped somewhat, the spring 40 can yield elastically so that the sieve cleaner does not jam in the space between the sieve bottom and the sieve covering.
- the foot 46 can be made of rubber-elastic material consist. When the screen cleaner moves in the screen frame, it is possible that the foot 46 "erases” on the smooth bottom of the screen, so that slight vibrations are generated which support the cleaning effect.
Landscapes
- Combined Means For Separation Of Solids (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- User Interface Of Digital Computer (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Fats And Perfumes (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020007005832A KR100562054B1 (ko) | 1997-11-29 | 1998-11-27 | 평면상 체 선별기용 체 클리너 |
EP98965706A EP1034045B1 (de) | 1997-11-29 | 1998-11-27 | Siebreiniger für plansichter |
US09/555,215 US6336557B1 (en) | 1997-11-29 | 1998-11-27 | Sieve cleaner for a plansifter |
JP2000523022A JP4283992B2 (ja) | 1997-11-29 | 1998-11-27 | プランシフター用の篩クリーナ |
DE59809594T DE59809594D1 (de) | 1997-11-29 | 1998-11-27 | Siebreiniger für plansichter |
AT98965706T ATE249288T1 (de) | 1997-11-29 | 1998-11-27 | Siebreiniger für plansichter |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97121003A EP0919293B1 (de) | 1997-11-29 | 1997-11-29 | Siebreiniger für Plansichter |
EP97121003.4 | 1997-11-29 | ||
DE29802807U DE29802807U1 (de) | 1997-11-29 | 1998-02-18 | Siebreiniger für Plansichter |
DE29802807.7 | 1998-02-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999028053A1 true WO1999028053A1 (de) | 1999-06-10 |
Family
ID=8227711
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/007671 WO1999028053A1 (de) | 1997-11-29 | 1998-11-27 | Siebreiniger für plansichter |
Country Status (9)
Country | Link |
---|---|
US (1) | US6336557B1 (de) |
EP (2) | EP0919293B1 (de) |
JP (1) | JP4283992B2 (de) |
KR (1) | KR100562054B1 (de) |
AT (2) | ATE218932T1 (de) |
DE (3) | DE59707513D1 (de) |
ES (2) | ES2176592T3 (de) |
TR (2) | TR200001550T2 (de) |
WO (1) | WO1999028053A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016062826A1 (de) | 2014-10-24 | 2016-04-28 | Bühler AG | Siebreiniger, siebeinheit und verfahren |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6627786B2 (en) * | 2001-11-26 | 2003-09-30 | The Procter & Gamble Company | Wearable article having a wetness sensation member |
EP2465616B1 (de) | 2010-12-15 | 2013-11-06 | Sefar AG | Siebreiniger für Plansichter |
JP5376735B1 (ja) * | 2012-06-13 | 2013-12-25 | 井上電設株式会社 | ペレットの冷却および篩い分けおよび搬送装置 |
JP6108754B2 (ja) * | 2012-10-18 | 2017-04-05 | 株式会社田中三次郎商店 | シーブクリーナー |
CN104624495B (zh) * | 2013-10-22 | 2017-03-01 | 上海申嘉三和环保科技开发有限公司 | 筛网清料装置及其清料器 |
CN103551306B (zh) * | 2013-10-22 | 2016-04-13 | 上海申嘉三和环保科技开发有限公司 | 筛网清料装置及其清料器 |
US10730076B2 (en) * | 2018-01-19 | 2020-08-04 | Ocrim S.P.A. | Interchangeable backwire/combined sieve and dynamic combined cleaner |
CN112620100B (zh) * | 2020-11-11 | 2022-01-11 | 安徽威斯贝尔智能科技有限公司 | 一种基于物联网的次品拦截装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR396457A (fr) * | 1908-11-18 | 1909-04-13 | Philippe Lafon | Dispositif de brossage pour tamis de plansichter |
GB191203845A (en) * | 1912-02-15 | 1913-02-17 | Raymond Mumford | Improved Brush Device for Cleansing Milling Sieves and the like. |
DE567747C (de) * | 1931-01-22 | 1933-01-09 | Fried Krupp Grusonwerk Akt Ges | Reinigungsvorrichtung fuer Schuettelsiebe mit an einem Wagen oder Schlitten befestigtem, auf Fuehrungsschienen ueber die Siebflaeche hin und her bewegtem Reinigungswerkzeug |
DE873345C (de) * | 1951-07-22 | 1953-04-13 | Paul Hufschmidt | Wanderbuerste zur Reinigung von Sieben |
DE1507747A1 (de) * | 1965-02-03 | 1969-07-31 | Muehlenbau Dresden Veb | Einrichtung zum Reinigen von Sieben in Siebsichtern mittels Mehrfluegelbuersten |
EP0536803A1 (de) * | 1988-01-30 | 1993-04-14 | Reinhard Rüter | Siebreiniger, insbesondere für Plansichter |
EP0694341A1 (de) * | 1992-02-29 | 1996-01-31 | Bühler Ag | Vorrichtung zur Reinigung von Sieben |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB700571A (en) * | 1951-07-11 | 1953-12-02 | E R & F Turner Ltd | Plansifter sieve cleaning device |
DE3640569A1 (de) * | 1986-11-27 | 1988-06-09 | Martin Filip | Siebreiniger |
-
1997
- 1997-11-29 ES ES97121003T patent/ES2176592T3/es not_active Expired - Lifetime
- 1997-11-29 EP EP97121003A patent/EP0919293B1/de not_active Expired - Lifetime
- 1997-11-29 DE DE59707513T patent/DE59707513D1/de not_active Expired - Lifetime
- 1997-11-29 AT AT97121003T patent/ATE218932T1/de active
-
1998
- 1998-02-18 DE DE29802807U patent/DE29802807U1/de not_active Expired - Lifetime
- 1998-11-27 DE DE59809594T patent/DE59809594D1/de not_active Expired - Lifetime
- 1998-11-27 TR TR2000/01550T patent/TR200001550T2/xx unknown
- 1998-11-27 ES ES98965706T patent/ES2205601T3/es not_active Expired - Lifetime
- 1998-11-27 KR KR1020007005832A patent/KR100562054B1/ko not_active IP Right Cessation
- 1998-11-27 JP JP2000523022A patent/JP4283992B2/ja not_active Expired - Fee Related
- 1998-11-27 TR TR2000/01549T patent/TR200001549T2/xx unknown
- 1998-11-27 US US09/555,215 patent/US6336557B1/en not_active Expired - Lifetime
- 1998-11-27 EP EP98965706A patent/EP1034045B1/de not_active Expired - Lifetime
- 1998-11-27 AT AT98965706T patent/ATE249288T1/de active
- 1998-11-27 WO PCT/EP1998/007671 patent/WO1999028053A1/de active IP Right Grant
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR396457A (fr) * | 1908-11-18 | 1909-04-13 | Philippe Lafon | Dispositif de brossage pour tamis de plansichter |
GB191203845A (en) * | 1912-02-15 | 1913-02-17 | Raymond Mumford | Improved Brush Device for Cleansing Milling Sieves and the like. |
DE567747C (de) * | 1931-01-22 | 1933-01-09 | Fried Krupp Grusonwerk Akt Ges | Reinigungsvorrichtung fuer Schuettelsiebe mit an einem Wagen oder Schlitten befestigtem, auf Fuehrungsschienen ueber die Siebflaeche hin und her bewegtem Reinigungswerkzeug |
DE873345C (de) * | 1951-07-22 | 1953-04-13 | Paul Hufschmidt | Wanderbuerste zur Reinigung von Sieben |
DE1507747A1 (de) * | 1965-02-03 | 1969-07-31 | Muehlenbau Dresden Veb | Einrichtung zum Reinigen von Sieben in Siebsichtern mittels Mehrfluegelbuersten |
EP0536803A1 (de) * | 1988-01-30 | 1993-04-14 | Reinhard Rüter | Siebreiniger, insbesondere für Plansichter |
EP0694341A1 (de) * | 1992-02-29 | 1996-01-31 | Bühler Ag | Vorrichtung zur Reinigung von Sieben |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016062826A1 (de) | 2014-10-24 | 2016-04-28 | Bühler AG | Siebreiniger, siebeinheit und verfahren |
RU2687727C2 (ru) * | 2014-10-24 | 2019-05-15 | Бюлер Аг | Ситоочиститель, узел грохота и способ |
US10335831B2 (en) | 2014-10-24 | 2019-07-02 | Bühler AG | Sieve cleaners, sieve unit, and methods |
Also Published As
Publication number | Publication date |
---|---|
KR100562054B1 (ko) | 2006-03-17 |
EP0919293B1 (de) | 2002-06-12 |
JP4283992B2 (ja) | 2009-06-24 |
DE59809594D1 (de) | 2003-10-16 |
ATE218932T1 (de) | 2002-06-15 |
US6336557B1 (en) | 2002-01-08 |
ES2176592T3 (es) | 2002-12-01 |
EP1034045A1 (de) | 2000-09-13 |
EP0919293A1 (de) | 1999-06-02 |
TR200001549T2 (tr) | 2000-11-21 |
ES2205601T3 (es) | 2004-05-01 |
EP1034045B1 (de) | 2003-09-10 |
JP2002505178A (ja) | 2002-02-19 |
TR200001550T2 (tr) | 2000-11-21 |
DE59707513D1 (de) | 2002-07-18 |
KR20010032584A (ko) | 2001-04-25 |
ATE249288T1 (de) | 2003-09-15 |
DE29802807U1 (de) | 1998-04-09 |
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