US3341365A - Method of cleaning granular filter material - Google Patents

Method of cleaning granular filter material Download PDF

Info

Publication number
US3341365A
US3341365A US3341365DA US3341365A US 3341365 A US3341365 A US 3341365A US 3341365D A US3341365D A US 3341365DA US 3341365 A US3341365 A US 3341365A
Authority
US
United States
Prior art keywords
box
filter material
cleaning
granular filter
shaking
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
Application number
Publication date
Application granted granted Critical
Publication of US3341365A publication Critical patent/US3341365A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/20—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles with liquid as a fluidising medium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
    • B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
    • B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned

Definitions

  • the invention ⁇ relates to a method for cleaning granular filter material which has been spread on at least one grid surface Vin a freely movable box, preferably for freeing the filter material from dust with the aid of an air current.
  • the upper grid surface can be omitted.
  • the box is subjected to a shaking movement in an at least approximately vertical plane alternately first in one and then in the other direction of rotation, so that the filter material first shifts to one side of the box and is then again spread with a level surface.
  • This method can be carried filter material spread on the other in a box.
  • the shaking in one or other direction of rotation can be repeated several times. In any case, however, it is carried out so that finally the filter material is spread with a more or less level surface in the box.
  • the grains move in a circular path or a portion of a circular path the plane of which is about vertical. (It is evident that the term circular path as employed here does not refer to a circle in the geometrical sense.) Furthermore the individual grains rotate at the same time about their own axes. A-n exceptionally good cleaning effect is obtained.
  • the drawing shows an apparatus for carrying out the method according to the invention.
  • a box 1 with a sieve bottom 2 is supported by springs 3 in any desired manner in relation to the stationary structural parts 4.
  • a motor 5 is ⁇ mounted in which an unbalance 6 rotates in an at least approximately out with several layers of grid surfaces arranged one above 3,341,365 Patented Sept. l2, 1967 ice vertical plane.
  • the upper surface of the filter material 7 in the box 1 is at first about horizontal. If the unbalance rotates in the direction of the arrow 9, the filter material 7 will shift in the box in such a way that its upper surface is finally in accordance with the line 10. If this direction of rotation of the unbalance 6 is now reversed, the surface of the filter material will in the course of time assume the shape indicated by the line 11.
  • the motor 5 is preferably equipped with an automatically adjustable reversing device so that the motor can be reversed after a predetermined number of rotations in one direction. In this manner it is possible to carry out the cleaning method in such a way that the filter material commences with a horizontal upper surface and again has a horizontal upper surface at the end of the cleaning operation.
  • Method of cleaning dust from granular filter material spread on at least one grid surface in a movable box comprising shaking the box by rotating an unbalanced weight attached to said box in one direction in a substantially vertical plane to shift and pile up said material against one side of the box, then reversing the direction of rotation of said weight to shift and level said material, and simultaneously with said shaking blowing air through said material to remove dust loosened by the shifting of said material in said box.
  • said unbalanced weight comprising an unbalanced motor.

Description

Sept. 12, 1967 w. BERz METHOD OF CLEANING GRANULAR FILTER MATERIAL Filed Jan. 5l, 1964 United States Patent O 3,341,365 METHOD F CLEANING GRANULAR FILTER MATERIAL Wolfgang Berz, Bayerlandstrasse 7, Kochel (See), Germany Filed Jan. 31, 1964, Ser. No. 341,652 2 Claims. (Cl. 134-25) The invention `relates to a method for cleaning granular filter material which has been spread on at least one grid surface Vin a freely movable box, preferably for freeing the filter material from dust with the aid of an air current.
It is known to place the granular filter material in a freely movable box between an upper and a lower grid surface. The cleaning of the filter material is effected in the box by a shaking or swinging process.
It is unavoidable that the individual grains during the filtering process become coated more or less, according to the substance they are to hold back, that is according to the nature of the dust. They therefore become larger in volume in the course of time. As the space for the filter material is limited by the two grid surfaces, the increase in volume deprives the grains of the freedom of movement which is absolutely necessary for the cleaning operation. Consequently lthe cleaning of the grains is rendered more diicult.
According to the invention the upper grid surface can be omitted. For the cleaning operation the box is subjected to a shaking movement in an at least approximately vertical plane alternately first in one and then in the other direction of rotation, so that the filter material first shifts to one side of the box and is then again spread with a level surface.
This method can be carried filter material spread on the other in a box.
The shaking in one or other direction of rotation can be repeated several times. In any case, however, it is carried out so that finally the filter material is spread with a more or less level surface in the box.
When the method according to the invention is being carried out the grains move in a circular path or a portion of a circular path the plane of which is about vertical. (It is evident that the term circular path as employed here does not refer to a circle in the geometrical sense.) Furthermore the individual grains rotate at the same time about their own axes. A-n exceptionally good cleaning effect is obtained.
The drawing shows an apparatus for carrying out the method according to the invention.
A box 1 with a sieve bottom 2 is supported by springs 3 in any desired manner in relation to the stationary structural parts 4. On the box 1 a motor 5 is` mounted in which an unbalance 6 rotates in an at least approximately out with several layers of grid surfaces arranged one above 3,341,365 Patented Sept. l2, 1967 ice vertical plane. The upper surface of the filter material 7 in the box 1 is at first about horizontal. If the unbalance rotates in the direction of the arrow 9, the filter material 7 will shift in the box in such a way that its upper surface is finally in accordance with the line 10. If this direction of rotation of the unbalance 6 is now reversed, the surface of the filter material will in the course of time assume the shape indicated by the line 11. If the unbalance 6 is then allowed to rotate several times in the direction of the arrow 9, the upper surface of the filter material will again become horizontal as indicated by the line 8. During this shaking operation air is blown through the grid 2 from below in the direction of the arrow 12 in known manner and carries off the dust collected by the filter material.
The motor 5 is preferably equipped with an automatically adjustable reversing device so that the motor can be reversed after a predetermined number of rotations in one direction. In this manner it is possible to carry out the cleaning method in such a way that the filter material commences with a horizontal upper surface and again has a horizontal upper surface at the end of the cleaning operation.
What is claimed is:
1. Method of cleaning dust from granular filter material spread on at least one grid surface in a movable box, comprising shaking the box by rotating an unbalanced weight attached to said box in one direction in a substantially vertical plane to shift and pile up said material against one side of the box, then reversing the direction of rotation of said weight to shift and level said material, and simultaneously with said shaking blowing air through said material to remove dust loosened by the shifting of said material in said box.
2. In the method of claim 1, said unbalanced weight comprising an unbalanced motor.
References Cited UNITED STATES PATENTS 2,222,776 11/ 1940 Linke et al 134-25 X FOREIGN PATENTS 6/ 1943 Great Britain.
OTHER REFERENCES Wilson, P. J., Ir. and Well, I. H., Coal Coke and Coal Chemicals, first edition, McGraw-Hill Book Co., Inc., New York, 1950, TP336W54C0P. 2, (pp. 111, and 12S- 127 relied on).
JOSEPH SCOVRONEK, Acting Primary Examiner. MORRIS O. WOLK, Examiner. I, `ZA'IARGA, Assistant Examiner.

Claims (1)

1. METHOD OF CLEANING DUST FROM GRANULAR FILTER MATERIAL SPREAD ON AT LEAST ONE GRID SURFACE IN A MOVABLE BOX, COMPRISING SHAKING THE BOX BY ROTATING AN UNBALANCED WEIGHT ATTACHED TO SAID BOX IN ONE DIRECTION IN A SUBSTANTIALLY VERTICAL PLANE TO SHIFT AND PILE UP SAID MATERIAL AGAINST ONE SIDE OF THE BOX, THEN REVERSING THE DIRECTION OF ROTATION OF SAID WEIGHT TO SHIFT AND LEVEL SAID MATERIAL, AND SIMULTANEOUSLY WITH SAID SHAKING BLOWING AIR THROUGH SAID MATERIAL TO REMOVE DUST LOOSENED BY THE SHIFTING OF SAID MATERIAL IN SAID BOX.
US3341365D Method of cleaning granular filter material Expired - Lifetime US3341365A (en)

Publications (1)

Publication Number Publication Date
US3341365A true US3341365A (en) 1967-09-12

Family

ID=3459338

Family Applications (1)

Application Number Title Priority Date Filing Date
US3341365D Expired - Lifetime US3341365A (en) Method of cleaning granular filter material

Country Status (1)

Country Link
US (1) US3341365A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660949A (en) * 1970-04-20 1972-05-09 Norton Co Work holder for irregular shaped workpieces
US3976086A (en) * 1974-12-12 1976-08-24 The Anaconda Company Cleaning of dry catalyst beds
US4290785A (en) * 1979-02-12 1981-09-22 Alldredge Robert L Dust collector and method of operation
US5509539A (en) * 1993-12-21 1996-04-23 Nec Electronics Incorporated Method for preparing injection molding compound pellets to remove molding compound dust and broken pellets

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222776A (en) * 1936-10-01 1940-11-26 Fried Krupp Grusonwerk Aktien Scrubbing machine
GB554192A (en) * 1941-10-21 1943-06-24 Fredrick Trostler Improvements in and relating to the washing of granular materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2222776A (en) * 1936-10-01 1940-11-26 Fried Krupp Grusonwerk Aktien Scrubbing machine
GB554192A (en) * 1941-10-21 1943-06-24 Fredrick Trostler Improvements in and relating to the washing of granular materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3660949A (en) * 1970-04-20 1972-05-09 Norton Co Work holder for irregular shaped workpieces
US3976086A (en) * 1974-12-12 1976-08-24 The Anaconda Company Cleaning of dry catalyst beds
US4290785A (en) * 1979-02-12 1981-09-22 Alldredge Robert L Dust collector and method of operation
US5509539A (en) * 1993-12-21 1996-04-23 Nec Electronics Incorporated Method for preparing injection molding compound pellets to remove molding compound dust and broken pellets

Similar Documents

Publication Publication Date Title
US3145164A (en) Apparatus for wet-screening a mixture of fine abrasive particles
US3341365A (en) Method of cleaning granular filter material
US1878998A (en) Continuous filter
US3564570A (en) Gas-solids separator
US2836299A (en) Gravel separator and scrubber
US753440A (en) Coal separator and washer
US1695362A (en) Separating apparatus
US2232431A (en) Rotating elevator
US3521750A (en) Laboratory sifter
US1797931A (en) Sintering machine
US989167A (en) Sieving-machine.
US1920190A (en) Apparatus for grading material
US1904058A (en) Grinding apparatus
US1454256A (en) Rotary means for cleaning electrodes
US547600A (en) Shots from dissolved cellulose
US1377247A (en) Machine for cleaning furs
US448538A (en) Flour-bolting apparatus
US2899070A (en) murphy
US474662A (en) Gravel-screen
US525758A (en) Drier
US1624528A (en) Magnetic separator
US905486A (en) Grinding glass tumblers.
US2915183A (en) Vibrating screen
US645369A (en) Dust-collector.
US392101A (en) Or cleansing tin or terne plates