US3321144A - Metering and control devices for feeder appliances - Google Patents

Metering and control devices for feeder appliances Download PDF

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Publication number
US3321144A
US3321144A US335990A US33599064A US3321144A US 3321144 A US3321144 A US 3321144A US 335990 A US335990 A US 335990A US 33599064 A US33599064 A US 33599064A US 3321144 A US3321144 A US 3321144A
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US
United States
Prior art keywords
hopper
lever
feeder
level
vane
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
US335990A
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English (en)
Inventor
Eppenberger Paul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BUHLER OBERUZWIL GEB
Gebr BUHLER OBERUZWIL
Original Assignee
BUHLER OBERUZWIL GEB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CH840261A priority Critical patent/CH393048A/de
Priority to DEB63828A priority patent/DE1171246B/de
Application filed by BUHLER OBERUZWIL GEB filed Critical BUHLER OBERUZWIL GEB
Priority to US335990A priority patent/US3321144A/en
Application granted granted Critical
Publication of US3321144A publication Critical patent/US3321144A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/286—Feeding devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C25/00—Control arrangements specially adapted for crushing or disintegrating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/32—Adjusting, applying pressure to, or controlling the distance between, milling members
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
    • D21G9/00—Other accessories for paper-making machines
    • D21G9/0009—Paper-making control systems

Definitions

  • the invention has the object of providing a novel and advantageous measuring and controlling arrangement for feeder devices on treatment machines for granular or pulverulent materials.
  • a control device for the flow of granular of pulverulent material which includes a feeder device or hopper having a feeder gap or valving means and a control element controlling the width of the feeder gap.
  • a driven vane wheel or propeller operates inside that part of the material upstream of the feeder gap in such a manner that the propeller always works itself up to the surface of the material.
  • This vane wheel or propeller is operatively connected with a control element and, by virtue of the rise and fall of the vane wheel or propeller in accordance with the rise and fall of the level of the surface of the material upstream of the feeder gap, the feeder gap or flow cross section area is widened or narrowed.
  • a further feature of the invention resides in the provision of a substantially balanced lever supporting the vane wheel or propeller, and novel drive means are also provided. Furthermore, the invention provides novel means for the connection of the feeler element or propeller or vane wheel with the feeder device in a controlling manner. Adjustable transmission means and fine adjusting means are further provided for accurate and fine control of the feed of the material.
  • An ancillary feature of the invention is the provision of a distributing device for the goods, this distributing device cooperating with the feeler element and preferably being driven in common therewith.
  • FIG. 1 shows a first embodiment of the feeler and control device, in perspective illustration.
  • FIG. 2 shows the feeler element of the control device according to FIG. 1, in elevation.
  • FIG. 3 shows the control device as a control member of a second embodiment, in perspective illustration.
  • a roller mill 9 illustrated in FIGS. 1 and 2 in a considerably simplified manner and having a drop shaft 10 on top for filling the same, two rollers 11 and 12 are journaled. These two mill rollers are associated with a feeder roller 13 adjacent a feeder flap 14.
  • a level feeler element 15 is arranged on a lever 17, which is pivotable about a pivot axle 16.
  • This level feeler element 15 is driven from the mill roller 12 through a driving pulley 20 mounted on the same shaft, an endless belt 21 and a driven pulley 22, which is mounted on a shaft 23 which, through a universal joint 24, is joined to the shaft 25 of the feeler.
  • a casing 26 encloses a bevel gearing 27 and associated propeller shaft 28.
  • the propeller shaft 28 carries on top a propeller 29.
  • a counterpoise 30 is provided, which keeps the lever 17 with the level feeler element 15 almost in. a balanced position.
  • the same keeps working itself always to the surface of the cone 31 formed by the material to be milled.
  • Variations in the height of the cone 31 cause variations in the position of the propeller 29 and accordingly variations in its angle relative to the axis of rotation 16. These variations in the angle are transmitted through an arm 33 joint rod 34 with two ball ends 35, to a bell crank lever 36, which is mounted on a pivot axle 37.
  • the transmission lever 39 which is provided with an adjustable finger 40 for the adaptation of the transmission ratio, the variations in said angle are transmitted at a suitable ratio to the fine adjustment lever 41.
  • This fine adjustment lever 41 carries a fine adjustment nut 42, which is mounted slidably on a fine adjustment spindle 43.
  • This fine adjustment spindle 43 is connected through a flap operating rod 44 with the feeder flap 14, which is pivotably mounted on flap pivot pins45.
  • a limit switch 59 is arranged on the bell crank lever 36. From this arrangement the following manner of operation follows:
  • the material to be milled reaches the roller mill 9 through the drop shaft 10 and forms a cone 31 above the feeder roller 13 and feeder flap 14-.
  • a certain position of the level feeler element 15 is adjusted, which element is formed by the propeller 29 arranged above the casing 26 of the bevel gearing 27.
  • the arm 33 When the propeller 29 rises, the arm 33 performs a downward movement, which causes a forward movement of the bell crank lever, whereby the feeder flap is opened wider and the cone 31 of the material to be milled is accordingly more rapidly reduced in height.
  • a steady fine adaptation of the feeder gap to the mass flow of the inflowing material and outfiowing material is obtained.
  • This causes also an optimum exploitation and a uniform milling of the material, since the material to and, through a ball' be milled is always distributed over the full width of the feeder gap and accordingly over the full width of the mill.
  • the cone 31 When the cone 31 is below a predetermined height, e.g. the level 31 according to FIG. 2, the switch 50 responds and the complete mill is brought to a standstill thus saving the mill rollers.
  • the transmission ratio may be adjusted in a simple manner, while a very fine adjustment may be effected by the fine adjustment nut 42 on the fine adjustment spindle 43.
  • the level feeler element and consequently the whole control and regulating device may be adapted to any desired material to be milled.
  • the device described constitutes a simple quickly responding mechanical control plant. It is characterised by a simple construction and a very fine response accuracy. At the same time the structural requirements of the apparatus are reduced to a minimum.
  • a level feeler element according to the invention for the control of a hydraulic roller mill, is described herein as a development of the invention. A further possibility for the level feeler element will also be illustrated.
  • Mill rollers 11 and 12 which are driven in the conventional manner are likewise journalled in this roller mill.
  • a driving pulley 52 is mounted, which is in driving connection with the pulley 53 arranged on a separate axle, the transmission being effected by an endless belt 54.
  • the shaft 53 of the driven pulley 53 is likewise connected with a flexible shaft 55 which is guided in a flexible sheath 56.
  • a casing 57 of the feeler element wherein the propeller shaft 28 and the propeller 29 are journalled, the connection between the flexible shaft 55 and the propeller shaft 28 is established.
  • the casing 57 of the feeler element is mounted on a lever 59, which is articulated by means of the axle 60 to the machine frame. While the regulation of the feeder gap may be carried on in the manner described hereinabove, a hydraulic disengagement device is here provided instead of the switch 50.
  • This control valve 65 is in communication by a pipe 67 with a power valve 68, which is connected by a pipe 69 with a pressure medium system.
  • This power valve 68 acts through a pressure medium pipe 70 on a working cylinder 71 which is articulated to abut a fixed point 72 of the roller mill.
  • the mill roller 11 is in turn journalled with its trunnion 73 in a bracket 75 pivotably mount-ed on a pivot pin '74, which bracket rests on a spring seated on a chimb 77 of a piston rod 76.
  • An identical mounting of the mill roller 11 is provided at the opposite end thereof.
  • control and regulating system for the feeding of the roller mill may be built into the hydraulic pressing system of the mill rollers. Consequently the mill rollers move very quickly apart when material to be milled is lacking, whereby a reliable manner of operation of the whole plant is secured.
  • a feature of the invention is the provision of a distributing device for the material, in operative association with the propeller 29.
  • a distributor has a proven value for the uniform distribution of the material to be treated over the whole feeder and treatment width.
  • the distributor is in the form of a cross 80 secured to the lower end of the propeller shaft 28 adjacent the bottom wall of casing 26.
  • This arrangement has the advantage that the same driven element serves for the metering as Well as for the uniform distribution of the mate-rial to be treated over the feeder device.
  • control and regulating device described may be modified in various respects without departing from the principle of the invention.
  • a linkage rod combination between the feeder roller and the feeder flap for the mechanical variation of the width of the feeder gap
  • a potentiometer arrangement whereby the rotary speed of the feeder valve can be varied.
  • the metering and control arrangement described is not limited to feeder devices of roller mills, but may be associated with any treatment machines, wherein materials capable of flowing are treated.
  • the disadvantages mentioned hereinabove are obviated in a simple manner.
  • a flow control device comprising, in combination, a rot-atable vane in said hopper as a sensing device for the level of material in said hopper; a lever having one end supporting said rotatable vane; mounting means outside said hopper pivotally mounting said lever at a point thereon spaced from said one end; driving means for said rotatable vane operable to rotate the vane to work its way to the surface of the material in the hopper, whereby said lever is pivoted about its mounting means so that the angular position of said lever follows the level of material in said hopper; said driving means including a drive shaft connected to said rotatable vane and extending, in totally enclosed relation, to said rotatable vane from a point exteriorly of said hopper; and control elements operatively connected between said lever and said valving means and controlling the flow cross sectional area of said valving means in
  • a control device as claimed in claim 1, in which said mounting means pivotally mounts said lever at a point on said lever intermediate its ends, and a counterpoise mounted at the opposite end of said lever and substantially balancing said rotatable vane.
  • a control device as claimed in claim 1, in which said drive shaft is enclosed within said lever.
  • a control device for the flow of granular or pul- .verulent material comprising, in combination: a feeder device having a feeder gap, a control element controlling the width of said feeder gap, and a driven vane wheel operating inside that part of said material upstream of said feeder gap so as to work itself always to the surface of said material, said vane wheel being in operative connection with said control element and by its rise and fall following the level of the surface of said material narrowing and widening, respectively, said feeder gap, a twoarmed lever carrying said vane wheel at one arm and having a counterpoise mounted at the other arm substantially balancing said vane wheel, and a transmission means arranged on said lever in driving connection with said vane wheel.
  • a control device for the flow of granular or pulverulent material comprising, in combination: a feeder device having a feeder gap, a control element controlling the Width of said feeder gap, and a driven vane wheel operating inside that part of said material upstream of said feeder gap so as to work itself always to the surface of said material, said vane wheel being in operative connection with said control element and by its rise and fall following the level of the surface of said material narrowing and widening, respectively, said feeder gap, a twoarmed lever carrying said vane wheel at one arm and having a counte-rpoise mounted at the other arm substantially balancing said vane wheel, and a flexible shaft arranged on said lever in driving connection with said vane wheel.
  • a control device for the flow of granular or pulverulent material comprising, in combination: a feeder device having a feeder gap, a control element cont-rolling the width of said feeder gap, and a driven vane wheel operating inside that part of said material upstream of said feeder gap so as to work itself always to the surface of said material, said vane wheel being in operative connection with said control element and by its rise and fall following the level of the surface of said material narrowing and widening, respectively, said feeder gap, a twoarmed lever carrying said vane wheel at one arm and having a counterpoise mounted at the other arm substantially balancing said vane wheel, a rod-linkage combination connecting said lever carrying said vane wheel with said control element controlling the width of said feeder gap, and a transmission device adjustable at will interposed in said rod-linkage combination.
  • a control device for the flow of granular or pulverulent material comprising in combination: a feeder device having a feeder gap, a control element controlling the width of said feeder gap, and a driven vane wheel operating inside that part of said material upstream of said feeder gap so as to work itself always to the surface of said material, said vane wheel being in operative connection with said control element and by its rise and fall following the level of the surface of said material narrowing and widening, respectively, said feeder :gap, and a distributor device for said material co-operating with said vane wheel and distributing said material homogeneously over said feeder device, said distributor device comprising a rotary cross in driving connection with said vane wheel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
US335990A 1961-07-17 1964-01-06 Metering and control devices for feeder appliances Expired - Lifetime US3321144A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CH840261A CH393048A (de) 1961-07-17 1961-07-17 Einrichtung zur Steuerung einer Speisevorrichtung
DEB63828A DE1171246B (de) 1961-07-17 1961-08-29 Regelnde Speisevorrichtung
US335990A US3321144A (en) 1961-07-17 1964-01-06 Metering and control devices for feeder appliances

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH840261A CH393048A (de) 1961-07-17 1961-07-17 Einrichtung zur Steuerung einer Speisevorrichtung
US335990A US3321144A (en) 1961-07-17 1964-01-06 Metering and control devices for feeder appliances

Publications (1)

Publication Number Publication Date
US3321144A true US3321144A (en) 1967-05-23

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Application Number Title Priority Date Filing Date
US335990A Expired - Lifetime US3321144A (en) 1961-07-17 1964-01-06 Metering and control devices for feeder appliances

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US (1) US3321144A (de)
CH (1) CH393048A (de)
DE (1) DE1171246B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753530A (en) * 1969-06-03 1973-08-21 Mo Och Domsjoe Ab Apparatus for converting sheet cellulose pulp to defibrated pulp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US361416A (en) * 1887-04-19 holgate
US2206237A (en) * 1936-06-05 1940-07-02 Western States Machine Co Affination apparatus for treating sugar
DE861490C (de) * 1951-02-08 1953-01-05 Miag Vertriebs Gmbh Vermahlungsmaschine mit Mahlwalzen und Speisevorrichtung
US3212672A (en) * 1962-08-20 1965-10-19 Elgin Softener Inc Dry diatomaceous earth feeder

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE37094C (de) * J. HOLGATE und J. B. HOLGATE in Burnley, Lancaster, England Neuerung an Vorrichtungen zur Regelung der Zuführung des Mahlgutes bei Walzenstühlen und anderen Maschinen
US2174843A (en) * 1936-12-18 1939-10-03 Firm Gebruder Buhler Roller mill having feed controlled grinding rollers
GB738558A (en) * 1953-12-28 1955-10-12 Simon Ltd Henry Improvements in feeding devices for roller mills for cereal products

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US361416A (en) * 1887-04-19 holgate
US2206237A (en) * 1936-06-05 1940-07-02 Western States Machine Co Affination apparatus for treating sugar
DE861490C (de) * 1951-02-08 1953-01-05 Miag Vertriebs Gmbh Vermahlungsmaschine mit Mahlwalzen und Speisevorrichtung
US3212672A (en) * 1962-08-20 1965-10-19 Elgin Softener Inc Dry diatomaceous earth feeder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3753530A (en) * 1969-06-03 1973-08-21 Mo Och Domsjoe Ab Apparatus for converting sheet cellulose pulp to defibrated pulp

Also Published As

Publication number Publication date
DE1171246C2 (de) 1964-12-17
DE1171246B (de) 1964-05-27
CH393048A (de) 1965-05-31

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