US1455907A - Vibrating trommel screen - Google Patents
Vibrating trommel screen Download PDFInfo
- Publication number
- US1455907A US1455907A US569610A US56961022A US1455907A US 1455907 A US1455907 A US 1455907A US 569610 A US569610 A US 569610A US 56961022 A US56961022 A US 56961022A US 1455907 A US1455907 A US 1455907A
- Authority
- US
- United States
- Prior art keywords
- shaft
- screen
- bearing
- extremity
- trommel screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000463 material Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000012858 resilient material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
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
- B07B1/18—Drum screens
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S241/00—Solid material comminution or disintegration
- Y10S241/30—Rubber elements in mills
Definitions
- a further object resides inthe simple manner in.' which this. vibratory motion is obtained,withoutthe use of eccentrics, cranks, connecting rods or other wearing and ex* pensive parts.
- Fig. 1 is a side elevation of the complete vibrating trommel screen.
- Fig. 2 is al section taken, through what is designated a's the floating bearing, on the line 2 2, Fig. 1.
- Fig. 3 is a detail view of the pulley used to transmit the vibratory movement to the screen.. f
- Fig. 4 is a detail cross section through an alternate form of floating bearing.
- Fig. 5 is a diagrammatic view illustrating the vibration of the shaft' and screen indeendent of any movement of the floating earing.y
- the numeral 10 designate a screen foundation adapted to hold the screen at an incline.
- foundation 10 mounted on foundation 10 are two bearing blocks 11 and 12, upon which are mounted journal boxes 13 and 14 respectively, in which is journaled a shaft 15.
- Box 13 is of the type of self aligning bearings which allow angular movement of the shaft in relation to the bearing supports.
- Box 14 is of special construction and is one of the features of the inventiom Secured to the extremity of the shaft 15- 1922. serial No. 569,610.
- a ⁇ shield y23 is secured to .tlie shaft 16, opposite the open end, to' prevent the entrance of forei material from the screen into the box y14.
- Bo'x 14 comprises a housing 24, which 'is secured 'by means of a top plate 25 and bolts 26 to the bearing block 12.
- a groove is pro- E vided in each side of the housing 24 for the passage of the bolts 26 and a groove is also .formed in the lower side to fit over the bearing block 12.
- the tension in the upper and lower cushions 27 may be regulate by means of a tension screw 29, threaded through the top plate 25 and bearing against a pressure plate, 30 which in turn bears against one of the cushions 27.
- ⁇ ,A washer or spray pipe 31 may be -used in connectionl with the screen if desired.
- the screen 20 is slowly revolved by means of lpulley 16; at' the same time unbalanced pulley 18 is revolved rapidly.
- the rapidly revolving weight 19' causes the extremity of the shaft 15 to gyrate rapidly, because of its Hexible mounting in the box 14, and impartsa vibration to thev to always be atan angle to the screen face and facilitates the sifting.
- i f'- In addition to the vibration cau-sed-by. the gyratory motion of the shaft there is a secondary vibration caused by the slight bending of the shaft itself. This-vibration would be apparent even were the floating bearing 28 prevented from moving, and is one of the features of the invention as it greatly increases the capacity.
- This vibratory motion is shown in exaggeration in the diagram in-Figt 5.
- Fig. l4 an alternate form of floating bearing is shown. lln this form the bearing 28 is supported by a series of helical springs 32, carried in adjusting caps 33 threaded into a housing 34. The caps 33 can be so adjusted as to vary the compression in the springs 32 and limit and control the vibrations of the screen as desired.
- a trommel screen comprising a shaft.
- one extremity of said shaft being carried ⁇ in a pivoted bearing, the opposite extremity ⁇ in a flexibly mounted bearing; a cylindrical screen rigidly mounted on said shaft between said bearings; means for causing said shaft tov gyrate in said flexibly mounted bearing and means for causing said shaft to simultaneously revolve.
- a trommel screen comprising a shaft, ⁇ one extremity of said shaft being carried in a' pivoted bearing, the opposite extremity in a flexibly mounted bearing; a c lindrical screen rigidly mounted on said sha t between said bearings; an unbalanced member loose- .vvolving said unbalanced member independent of, but'simultaneously with, said sha-ft.
- a trommel screen comprising a'shaft, y,
- one extremity 'of said shaft being carried in a pivoted bearing, the opposite extremity in a flexibly mounted bearing; a cylindricalv screen rigidly 'mounted'x pn said shaft between-said bearings; an unbalanced pulley.
- a trommel screen comprising ⁇ a cylindrical screen rigidly secured to and surrounding a central shaft; a pivoted bearing supporting one extremity of said shaft; a flexibly mountedv bearing supporting the opposite extremity of -said shaft.
- said flexibly lnounted bearing comprising a bearing flexibly supported in a housing and free to move radially with said shaft; means for causing said shaft to gyrate in said flexibly mounted bearing-and independent means for simultaneously revolving said shaft.
- a trommel screen comprising a'cylindrical screen rigidly secured to and surrounding a central shaft; a pivoted bearing supporting one extremity of said shaft; a flexibly mounted bearing supporting the opposite extremity of ,said shaft, said flexibly mounted bearing comprising a bear-ing flexibly supported in a housing and free to move radially with said shaft; means for regulating said radial movement; means for causing said 4shaft to gyrate in said flexibly mounted bearing and independent means, for simultaneously revolving said shaft.
- a trommel screen comprising a horizontal semi-flexible shaft supported on two fixed bearings, said bearings being adapted to allow angular movement of the shaft; a cylindrical screen concentrically surrounding and rigidly mounted on said shaft between said bearings, said screen being adapted to flex with said shaft; means for causing said shaft and screen to flex between said bearings and means for causing said shaft and screen to revolve.
Landscapes
- Combined Means For Separation Of Solids (AREA)
Description
May' 22, 1923.-
' A. c. pAMAN vIBRA'rING Tucuman 'scnan'n Filed June 20. 1922 INVENTOR' www //fli' H TToR/VE Patented May 22, 1923. p UNITED STATE-S- 1,455,907 PATENT v0.1i' F ICE.
ARTHUR C. DMN, OF DENVER, COLORADO.
vIBnATING TROMMEL SCREEN;
Application. iiledf lune 20,.
, screen of this characterin which a. violent vibratory motion is. imparted to the screen in addition to the revolving` motion.
A further object resides inthe simple manner in.' which this. vibratory motion is obtained,withoutthe use of eccentrics, cranks, connecting rods or other wearing and ex* pensive parts. v
Other objects reside in the detail construction of the device which lead toefciency,
I lsimplicity and economy and which will become apparent from the following detailed description. y
In the following. description reference is had to the accompanying drawing which forms a part hereof. In the description and in all views of the drawing likeparts are designated by like numerals.
In the drawing:
Fig. 1 is a side elevation of the complete vibrating trommel screen.
Fig. 2 is al section taken, through what is designated a's the floating bearing, on the line 2 2, Fig. 1.
Fig. 3 is a detail view of the pulley used to transmit the vibratory movement to the screen.. f
Fig. 4 is a detail cross section through an alternate form of floating bearing.
Fig. 5 is a diagrammatic view illustrating the vibration of the shaft' and screen indeendent of any movement of the floating earing.y
Let the numeral 10 designate a screen foundation adapted to hold the screen at an incline. Mounted on foundation 10 are two bearing blocks 11 and 12, upon which are mounted journal boxes 13 and 14 respectively, in which is journaled a shaft 15.
Box 13 is of the type of self aligning bearings which allow angular movement of the shaft in relation to the bearing supports. Box 14 is of special construction and is one of the features of the inventiom Secured to the extremity of the shaft 15- 1922. serial No. 569,610.
nearest the box 13 is a belt pulley 16,'v by meansof. which shaft 15 is revolved; rotatably mounted on the opposite extremity of the shaft 15, between shaft colla-rs 17, is a loose pulley 18 of special design. Loose pulley 18 is unbalanced' by means of a weight 19 placed towards its periphery.
Fix'edrly mounted on the shaft 15, between the boxes 13 and 14 is a trommel screen 20. Screen` 20 i`s` rigidly secured to shaft 16 by means of three spiders 21 (indicated in Fig.
5) one of which is located at the mid-point of the screen and one at each extremity thereof. Both ends of the screen are open; material being fed in at the higher end. by means of a chute 22; the finer particles being dis? charged through the screen, and the coarser, through the open lower end in the usual manner with screens of this type. A` shield y23 is secured to .tlie shaft 16, opposite the open end, to' prevent the entrance of forei material from the screen into the box y14.
Bo'x 14 comprises a housing 24, which 'is secured 'by means of a top plate 25 and bolts 26 to the bearing block 12. A groove is pro- E vided in each side of the housing 24 for the passage of the bolts 26 and a groove is also .formed in the lower side to fit over the bearing block 12. v
Suspended within the'housin 24 by meansv of series of cushions 27, form of rubber or other resilient material, is a shaft bearing, 28, which carries the shaft 15. The tension in the upper and lower cushions 27 may be regulate by means of a tension screw 29, threaded through the top plate 25 and bearing against a pressure plate, 30 which in turn bears against one of the cushions 27.
` ,A washer or spray pipe 31 may be -used in connectionl with the screen if desired.
In operation the screen 20 is slowly revolved by means of lpulley 16; at' the same time unbalanced pulley 18 is revolved rapidly. The rapidly revolving weight 19' causes the extremity of the shaft 15 to gyrate rapidly, because of its Hexible mounting in the box 14, and impartsa vibration to thev to always be atan angle to the screen face and facilitates the sifting. i f'- In addition to the vibration cau-sed-by. the gyratory motion of the shaft there is a secondary vibration caused by the slight bending of the shaft itself. This-vibration Would be apparent even were the floating bearing 28 prevented from moving, and is one of the features of the invention as it greatly increases the capacity. This vibratory motion is shown in exaggeration in the diagram in-Figt 5.
- The centrifugal force of the rapidly revolving weight 19 on the pulley 18 causes the shaft to bend or flex slightly between its points of support viz. boxes 13 and 14; the
axis of the shaft rapidly revolving around the center line of the screen. This motion when opposed to the revolving of .the shaft itself causes a violent agitation of the material being screened.
In Fig. l4 an alternate form of floating bearing is shown. lln this form the bearing 28 is supported by a series of helical springs 32, carried in adjusting caps 33 threaded into a housing 34. The caps 33 can be so adjusted as to vary the compression in the springs 32 and limit and control the vibrations of the screen as desired.
While I have described' and illustratedl herein a specific form ofmy improvement I wi-sh itunderstood that'the-same may be varied, within the scope o he appended claims, without departing from the spirit of the invention.
Having thus described the invention, what is claimed and desired secured by 'Letters Patent is i 1. A trommel screen comprising a shaft.
one extremity of said shaft being carried` in a pivoted bearing, the opposite extremity `in a flexibly mounted bearing; a cylindrical screen rigidly mounted on said shaft between said bearings; means for causing said shaft tov gyrate in said flexibly mounted bearing and means for causing said shaft to simultaneously revolve.
2. A trommel screen comprising a shaft, `one extremity of said shaft being carried in a' pivoted bearing, the opposite extremity in a flexibly mounted bearing; a c lindrical screen rigidly mounted on said sha t between said bearings; an unbalanced member loose- .vvolving said unbalanced member independent of, but'simultaneously with, said sha-ft.
3. A trommel screen comprising a'shaft, y,
one extremity 'of said shaft being carried in a pivoted bearing, the opposite extremity in a flexibly mounted bearing; a cylindricalv screen rigidly 'mounted'x pn said shaft between-said bearings; an unbalanced pulley.
loosely mounted onisaid shaft adjacent to said flexibly mounted bearing and a second balanced pulley fixedly mounted on said shaft adjacent to said flexibly mounted shaft.
4. A trommel screen comprising` a cylindrical screen rigidly secured to and surrounding a central shaft; a pivoted bearing supporting one extremity of said shaft; a flexibly mountedv bearing supporting the opposite extremity of -said shaft. said flexibly lnounted bearing comprising a bearing flexibly supported in a housing and free to move radially with said shaft; means for causing said shaft to gyrate in said flexibly mounted bearing-and independent means for simultaneously revolving said shaft.
5. A trommel screen comprising a'cylindrical screen rigidly secured to and surrounding a central shaft; a pivoted bearing supporting one extremity of said shaft; a flexibly mounted bearing supporting the opposite extremity of ,said shaft, said flexibly mounted bearing comprising a bear-ing flexibly supported in a housing and free to move radially with said shaft; means for regulating said radial movement; means for causing said 4shaft to gyrate in said flexibly mounted bearing and independent means, for simultaneously revolving said shaft.
6. A trommel screen comprising a horizontal semi-flexible shaft supported on two fixed bearings, said bearings being adapted to allow angular movement of the shaft; a cylindrical screen concentrically surrounding and rigidly mounted on said shaft between said bearings, said screen being adapted to flex with said shaft; means for causing said shaft and screen to flex between said bearings and means for causing said shaft and screen to revolve.
In testimony whereof l allix my signature.
ARTHUR C. DAMAN.-
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US569610A US1455907A (en) | 1922-06-20 | 1922-06-20 | Vibrating trommel screen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US569610A US1455907A (en) | 1922-06-20 | 1922-06-20 | Vibrating trommel screen |
Publications (1)
Publication Number | Publication Date |
---|---|
US1455907A true US1455907A (en) | 1923-05-22 |
Family
ID=24276111
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US569610A Expired - Lifetime US1455907A (en) | 1922-06-20 | 1922-06-20 | Vibrating trommel screen |
Country Status (1)
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US (1) | US1455907A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2416499A (en) * | 1942-12-07 | 1947-02-25 | Conveyor Company | Vibratory rotary screen |
US2500965A (en) * | 1944-06-05 | 1950-03-21 | Nordberg Manufacturing Co | Vertical axis gyratory screen |
US2631506A (en) * | 1945-11-06 | 1953-03-17 | Ekstroems Maskinaffaer Ab | Vibratory rotary screening mechanism |
US2700470A (en) * | 1950-04-15 | 1955-01-25 | Lamort E & M | Sifting apparatus |
US2702633A (en) * | 1947-10-20 | 1955-02-22 | Leon M Dekanski | Vibrating trommel screen |
US2795828A (en) * | 1953-11-27 | 1957-06-18 | Foundry Equipment Ltd | Machine for knocking out foundry moulding boxes |
WO1979000453A1 (en) * | 1977-12-29 | 1979-07-26 | William V Spurlin | Vibratory device for feeders and the like |
PH12017000188A1 (en) * | 2017-06-28 | 2019-02-18 | Philippine Center For Postharvest Development And Mech Philmech | Adlay centrifugal huller |
-
1922
- 1922-06-20 US US569610A patent/US1455907A/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2416499A (en) * | 1942-12-07 | 1947-02-25 | Conveyor Company | Vibratory rotary screen |
US2500965A (en) * | 1944-06-05 | 1950-03-21 | Nordberg Manufacturing Co | Vertical axis gyratory screen |
US2631506A (en) * | 1945-11-06 | 1953-03-17 | Ekstroems Maskinaffaer Ab | Vibratory rotary screening mechanism |
US2702633A (en) * | 1947-10-20 | 1955-02-22 | Leon M Dekanski | Vibrating trommel screen |
US2700470A (en) * | 1950-04-15 | 1955-01-25 | Lamort E & M | Sifting apparatus |
US2795828A (en) * | 1953-11-27 | 1957-06-18 | Foundry Equipment Ltd | Machine for knocking out foundry moulding boxes |
WO1979000453A1 (en) * | 1977-12-29 | 1979-07-26 | William V Spurlin | Vibratory device for feeders and the like |
US4218929A (en) * | 1977-12-29 | 1980-08-26 | Syn-Energy, Inc. | Vibratory device for feeders and the like |
PH12017000188A1 (en) * | 2017-06-28 | 2019-02-18 | Philippine Center For Postharvest Development And Mech Philmech | Adlay centrifugal huller |
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