US3804298A - Gravimetric feeder - Google Patents

Gravimetric feeder Download PDF

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Publication number
US3804298A
US3804298A US00274848A US27484872A US3804298A US 3804298 A US3804298 A US 3804298A US 00274848 A US00274848 A US 00274848A US 27484872 A US27484872 A US 27484872A US 3804298 A US3804298 A US 3804298A
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US
United States
Prior art keywords
conveyor
prefeeder
enclosed
dispensing outlet
sealed relationship
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
US00274848A
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English (en)
Inventor
R Ricciardi
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US00274848A priority Critical patent/US3804298A/en
Priority to GB909073A priority patent/GB1375798A/en
Priority to CA164,681A priority patent/CA990250A/en
Priority to DE19732312184 priority patent/DE2312184C3/de
Priority to CH399173A priority patent/CH556283A/xx
Priority to AR247148A priority patent/AR196663A1/es
Priority to JP48038857A priority patent/JPS4944467A/ja
Priority to BR3677/73A priority patent/BR7303677D0/pt
Priority to AU57222/73A priority patent/AU467655B2/en
Application granted granted Critical
Publication of US3804298A publication Critical patent/US3804298A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G65/00—Loading or unloading
    • B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
    • B65G65/34—Emptying devices
    • B65G65/40—Devices for emptying otherwise than from the top
    • B65G65/46—Devices for emptying otherwise than from the top using screw conveyors

Definitions

  • ABSTRACT Apparatus for feeding particulate solid material having a main frame, an enclosed volumetric prefeeder mounted on the main frame, a motor for driving the prefeeder, the prefeeder having an enclosed dispensing outlet, a downspout connected to the dispensing outlet in fixedly sealed relationship, an enclosed auger type conveyor, a sealing member for flexibly connecting in sealed relationship the downspout to the conveyor, a driving member for driving the auger in the conveyor, a connecting member for flexibly connecting the conveyor in sealed relationship to the discharge conduit.
  • SHEET 1 nr 2 GRAVIMETRIC FEEDER This invention relates to an apparatus for meteringand feedingparticulate solid material. It is particularly adapted, among other possible uses, for accurately metering and feeding material that is free-flowing, sluggish or pressure sensitive and which ranges from amorphous powders to flakes, pellets, chunks and even fibers.
  • my invention contemplates the provision of a new-andimproved apparatus for feeding particulate solid material characterized by a mainframe, and an enclosed volumetric type prefeeder having enclosed discharge means feeding into enclosed inlet means of an encapsulated auger type conveyor which, in turn, has enclosed outlet means.
  • Weighing means are provided for the encapsulated auger, and control.
  • valve means are provided which are responsive to the weighing means and serve to control the volumetric outflow of the. prefeeder.
  • FIG. 1 is a schematic side elevation showing apparatus for feeding particulate solid material constructed according to the concepts of my invention
  • FIG. 2 is an enlarged, side elevation view, partly in medial section, showing details of the encapsulated auger
  • FIG. 3 is an enlarged, plan view showing the feeding apparatus
  • FIG. 4 is an enlarged end view of the apparatus of FIGS. 1-3.
  • the feeding apparatus comprises a main frame 10, FIG. 2, upon which is mounted a volumetric auger type prefeeder 12, having an upper inlet 14, FIG. I, for receiving material to be processed and a lower enclosed dispensing outlet 16.
  • a volumetric auger type prefeeder 12 having an upper inlet 14, FIG. I, for receiving material to be processed and a lower enclosed dispensing outlet 16.
  • a particularly suitable type of volu-' metric profeeder for this purpose is described in detail in my US. Pat. No. 3,186,602, issued June I, I965.
  • the prefeeder 12 employs an auger l8 driven by a motor 20, FIG. 1, for propelling the material through the outlet 16 into a downspout 22, as indicated by arrow 24, FIG. 2.
  • the dispensing outlet and thedownspout are mounted in fixedly sealed relationship with respect to each other.
  • the downspout leads to the inlet of an enclosed auger type conveyor 26, which incorporates an auger 28 having a drive shaft 30 driven at substantially constant speed by a motor 32, FIG. 3, by means of a chain and pulley system 34.
  • the auger 28 serves to move the material through a conveyor cylinder 36 to a discharge outlet 38 where it passes into a discharge conduit 40, as indicated by arrow 42, FIG. 2.
  • the conduit 40 is mounted on the main frame 10, as at 43.
  • the conveyor 26 is mounted in such a manner that the entire assembly and its contents can be sensed” or weighed by a force sensing load cell, such as a low voltage differential transformer LVDT 44.
  • a force sensing load cell such as a low voltage differential transformer LVDT 44.
  • the conveyor 26 is carried by a conveyor support frame 46, which is fixedly connected thereto, as at 48, FIG. 4.
  • the motor 32 is fixedly connected to the conveyor support frame 36, as at 50, FIG. 3. Reverting to FIG. 2, it will be seen that the movable conveyor cylinder 36 is flexibly connected in sealed relationship to the fixed downspout 22, as by means of a downspout sleeve 52.
  • the movable cylinder 36 is flexibly connected in sealed relationship to the fixed discharge conduit 40, by means of a sleeve clamping assembly 54. Accordingly, it will be appreciated that the material being processed passes through a completely closed system from inlet to outlet, thereby providing the advantages set forth hereinbefore.
  • the conveyor support frame 46 includes vertical stabilizer bars 56, which engage a balanced beam assembly 58 that, in turn, actuates the low voltage differential transformer 44.
  • This device translates mechanical displacement into an electrical signal, which can be used for visually monitoring of the weight variation of the material in process by means of an indicator 60, FIG. I, provided for the purpose.
  • the same signal is transmitted to a controller 62, which also receivesa signal from a set point signal means 64, so that the setting of the desired feed rate by the operator is compared to the signal received from the low voltage differential transformer( LVDT). Responsive to the comparative signals, the controller 62 sends a signal to the motor 20 which drives the volumetric feeder 12 to control the rate of passage of the material therethrough.
  • a total feed rate indicator 66 may be employed which receives a signal from the LVDT 44 and is adapted to indicate the total feed weight over a prescribed period of time. Accordingly, it will be appreciated that this apparatus is capable of feeding particulate solid material, either continuously, or in a batch-type of operation, with a high degree of accuracy.
  • the discharge conduit 40 is provided with an auger access door 68 to facilitate assembly and maintenance and, in addition, it is provided with a hinged inspection door 70 for purposes of visually inspecting the system.
  • the present invention does indeed provide an improved feeding apparatus capable of handling a wide variety of materials having different physical and chemical characteristics, which is superior in providing a dust-proof system and handling material which must be maintained free of contamination, and which is reliable and efficient as compared to prior art such apparatus.
  • Apparatus for feeding particulate solid material comprising a main frame, an enclosed volumetric prefeeder mounted on said main frame, means for driving said prefeeder, said prefeeder having an enclosed dispensing outlet, a downspout connected to said dispensing outlet in fixedly sealed relationship, an enclosed auger conveyor, means for flexibly connecting said conveyor in sealed relationship to said downspout, means for driving said auger, said conveyor having a dispensing outlet, a discharge conduit, means for flexibly connecting said dispensing outlet of said conveyor in sealed relationship to said discharge conduit and continuous weighing means for said enclosed auger conveyor, and wherein said means for driving said enclosed volumetric prefeeder is responsive to said weighing means.
  • Apparatus for feeding particulate solid material according to claim 1, wherein said means for flexibly connecting said conveyor in sealed relationship to include a downspout sleeve, and said means for flexibly connecting said dispensing outlet of said conveyor in sealed relationship to said discharge conduit includes a sleeve clamping assembly.
  • Apparatus for feeding particulate solid material comprising a main frame, an enclosed volumetric auger prefeeder mounted on said main frame, motor means for driving said prefeeder, said prefeeder having an enclosed dispensing outlet, a downspout connected to said dispensing outlet in a fixedly sealed relationship with respect thereto, a conveyor support frame, an enclosed auger conveyor mounted on said conveyor support frame, a downspout sleeve for flexibly connecting in sealed relationship said conveyor to said downspout, means for driving the auger in said conveyor at substantially constant speed, said conveyor having a dispensing outlet, a discharge conduit fixedly mounted on said main frame, a sleeve clamping assembly for flexibly -connecting said discharge conduit in sealed relationsaid prefeeder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Screw Conveyors (AREA)
  • Control Of Conveyors (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Basic Packing Technique (AREA)
US00274848A 1972-07-25 1972-07-25 Gravimetric feeder Expired - Lifetime US3804298A (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US00274848A US3804298A (en) 1972-07-25 1972-07-25 Gravimetric feeder
GB909073A GB1375798A (enrdf_load_stackoverflow) 1972-07-25 1973-02-23
CA164,681A CA990250A (en) 1972-07-25 1973-02-27 Prefeeder, main conveyor combination
DE19732312184 DE2312184C3 (de) 1972-07-25 1973-03-12 Gerät zum Fördern teilchenförmigen festen Materials
CH399173A CH556283A (de) 1972-07-25 1973-03-19 Vorrichtung zur foerderung und messung von teilchenfoermigen feststoffen.
AR247148A AR196663A1 (es) 1972-07-25 1973-03-20 Aparato para acondicionar y alimentar un material solido en particulas
JP48038857A JPS4944467A (enrdf_load_stackoverflow) 1972-07-25 1973-04-06
BR3677/73A BR7303677D0 (pt) 1972-07-25 1973-05-18 Aparelho para alimentacao de material solido em particula
AU57222/73A AU467655B2 (en) 1972-07-25 1973-06-21 Gravimetric feeder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00274848A US3804298A (en) 1972-07-25 1972-07-25 Gravimetric feeder

Publications (1)

Publication Number Publication Date
US3804298A true US3804298A (en) 1974-04-16

Family

ID=23049847

Family Applications (1)

Application Number Title Priority Date Filing Date
US00274848A Expired - Lifetime US3804298A (en) 1972-07-25 1972-07-25 Gravimetric feeder

Country Status (8)

Country Link
US (1) US3804298A (enrdf_load_stackoverflow)
JP (1) JPS4944467A (enrdf_load_stackoverflow)
AR (1) AR196663A1 (enrdf_load_stackoverflow)
AU (1) AU467655B2 (enrdf_load_stackoverflow)
BR (1) BR7303677D0 (enrdf_load_stackoverflow)
CA (1) CA990250A (enrdf_load_stackoverflow)
CH (1) CH556283A (enrdf_load_stackoverflow)
GB (1) GB1375798A (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184754A (en) * 1990-10-18 1993-02-09 Hansen Thomas N Weight-controlled particulate matter feed system
US5423456A (en) * 1994-01-03 1995-06-13 Larry V. Arendonk Apparatus for continuous flow weighing
US5450984A (en) * 1994-04-29 1995-09-19 K-Tron Technologies, Inc. Material feeding apparatus
US5711212A (en) * 1994-06-09 1998-01-27 Paramount Farms, Inc. Apparatus for splitting pistachios
US5848728A (en) * 1996-11-07 1998-12-15 Acrison, Inc. Multi-flighted notched metering auger
US6109478A (en) * 1997-10-24 2000-08-29 Eskom Conveying of materials
US6186360B1 (en) 1998-11-20 2001-02-13 Schenck Accurate, Inc. Machine and method for unloading a bulk-material bag
US6568567B2 (en) 1999-02-10 2003-05-27 Schenck Accurate, Inc. Bulk-solid metering system with laterally removable feed hopper
US20040002789A1 (en) * 2002-07-01 2004-01-01 Hachtel Robert George Loss-in-weight feeder with discharge pressure compensator
US20040011569A1 (en) * 2000-06-14 2004-01-22 Klijn Erik Hans Dosing device
US20040022703A1 (en) * 2002-06-03 2004-02-05 Aventis Pharma S.A. Device for introducing a solid reagent
CN100561232C (zh) * 2007-06-27 2009-11-18 上海新拓电力设备有限公司 一种测量螺旋给料机出口端物料输送即时速度的方法
CN104192545A (zh) * 2014-06-27 2014-12-10 江苏大学 一种环模压块机秸秆物料自动进给装置
CN105599927A (zh) * 2016-01-20 2016-05-25 湖州浙宝冶金辅料有限公司 一种高钙粉全封闭封装系统
US20200072657A1 (en) * 2018-08-30 2020-03-05 A. J. Antunes & Co. Automated condiment dispensing system with precisely controlled dispensed quantities
CN116281118A (zh) * 2023-02-15 2023-06-23 杭州杭新固体废物处置有限公司 一种用于固体废料处置的桁架机器人及其工作方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5160687A (ja) * 1974-11-25 1976-05-26 Kogyo Gijutsuin Netsutekifuanteibutsushitsuo koonhannokihekyokyusuru sochi
DK32382A (da) * 1982-01-26 1983-07-27 Christian Thomsen Dahl Materialeindtag til roertransportanlaeg
JPS6429326U (enrdf_load_stackoverflow) * 1987-08-11 1989-02-21
ITMI20060176A1 (it) * 2006-02-02 2007-08-03 Ecodeco S R L Dispositivo di alimentazione e dosaggio in continuo di combustibili derivati dai rifiuti cdr a utenze non in pressione

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2276382A (en) * 1938-03-10 1942-03-17 Traylor Vibrator Co Feeding apparatus
US2381505A (en) * 1940-04-04 1945-08-07 Pneumatic Scale Corp Packaging machine
US2743850A (en) * 1956-05-01 hamilton
US3091368A (en) * 1961-03-01 1963-05-28 Remington Arms Co Inc Powder measuring device
US3253745A (en) * 1964-11-12 1966-05-31 Mix Mill Inc Delay control switch and hopper for feeding finely divided materials
US3494507A (en) * 1966-07-05 1970-02-10 Ronald J Ricciardi Metering apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2743850A (en) * 1956-05-01 hamilton
US2276382A (en) * 1938-03-10 1942-03-17 Traylor Vibrator Co Feeding apparatus
US2381505A (en) * 1940-04-04 1945-08-07 Pneumatic Scale Corp Packaging machine
US3091368A (en) * 1961-03-01 1963-05-28 Remington Arms Co Inc Powder measuring device
US3253745A (en) * 1964-11-12 1966-05-31 Mix Mill Inc Delay control switch and hopper for feeding finely divided materials
US3494507A (en) * 1966-07-05 1970-02-10 Ronald J Ricciardi Metering apparatus

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5184754A (en) * 1990-10-18 1993-02-09 Hansen Thomas N Weight-controlled particulate matter feed system
US5423456A (en) * 1994-01-03 1995-06-13 Larry V. Arendonk Apparatus for continuous flow weighing
US5450984A (en) * 1994-04-29 1995-09-19 K-Tron Technologies, Inc. Material feeding apparatus
US5711212A (en) * 1994-06-09 1998-01-27 Paramount Farms, Inc. Apparatus for splitting pistachios
US5848728A (en) * 1996-11-07 1998-12-15 Acrison, Inc. Multi-flighted notched metering auger
US6109478A (en) * 1997-10-24 2000-08-29 Eskom Conveying of materials
US6186360B1 (en) 1998-11-20 2001-02-13 Schenck Accurate, Inc. Machine and method for unloading a bulk-material bag
US6568567B2 (en) 1999-02-10 2003-05-27 Schenck Accurate, Inc. Bulk-solid metering system with laterally removable feed hopper
US6911607B2 (en) * 2000-06-14 2005-06-28 E.H. Klijn Beheer B.V. Dosing device
US20040011569A1 (en) * 2000-06-14 2004-01-22 Klijn Erik Hans Dosing device
US20040022703A1 (en) * 2002-06-03 2004-02-05 Aventis Pharma S.A. Device for introducing a solid reagent
US20040002789A1 (en) * 2002-07-01 2004-01-01 Hachtel Robert George Loss-in-weight feeder with discharge pressure compensator
CN100561232C (zh) * 2007-06-27 2009-11-18 上海新拓电力设备有限公司 一种测量螺旋给料机出口端物料输送即时速度的方法
CN104192545A (zh) * 2014-06-27 2014-12-10 江苏大学 一种环模压块机秸秆物料自动进给装置
CN105599927A (zh) * 2016-01-20 2016-05-25 湖州浙宝冶金辅料有限公司 一种高钙粉全封闭封装系统
US20200072657A1 (en) * 2018-08-30 2020-03-05 A. J. Antunes & Co. Automated condiment dispensing system with precisely controlled dispensed quantities
US10948336B2 (en) * 2018-08-30 2021-03-16 A. J. Antunes & Co. Automated condiment dispensing system with precisely controlled dispensed quantities
CN116281118A (zh) * 2023-02-15 2023-06-23 杭州杭新固体废物处置有限公司 一种用于固体废料处置的桁架机器人及其工作方法

Also Published As

Publication number Publication date
CH556283A (de) 1974-11-29
DE2312184B2 (de) 1975-07-10
DE2312184A1 (de) 1974-02-21
AR196663A1 (es) 1974-02-12
AU5722273A (en) 1975-02-06
GB1375798A (enrdf_load_stackoverflow) 1974-11-27
JPS4944467A (enrdf_load_stackoverflow) 1974-04-26
AU467655B2 (en) 1975-12-11
CA990250A (en) 1976-06-01
BR7303677D0 (pt) 1974-02-12

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