US3853355A - Method and device for discharging rubbish and waste through pneumatic ducts - Google Patents

Method and device for discharging rubbish and waste through pneumatic ducts Download PDF

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Publication number
US3853355A
US3853355A US00334890A US33489073A US3853355A US 3853355 A US3853355 A US 3853355A US 00334890 A US00334890 A US 00334890A US 33489073 A US33489073 A US 33489073A US 3853355 A US3853355 A US 3853355A
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US
United States
Prior art keywords
duct
fan
main duct
main
outlet
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Expired - Lifetime
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US00334890A
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English (en)
Inventor
M Buisson
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REALISATIONS COMPLEXES IND IMP
SOC ETUDES REALISATIONS COMPLEXES IND IMPASSE VENTES MARSAUCEUX FR
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REALISATIONS COMPLEXES IND IMP
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Publication date
Priority claimed from FR7206208A external-priority patent/FR2173428A5/fr
Priority claimed from FR7237013A external-priority patent/FR2204204A6/fr
Application filed by REALISATIONS COMPLEXES IND IMP filed Critical REALISATIONS COMPLEXES IND IMP
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Publication of US3853355A publication Critical patent/US3853355A/en
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F17/00—Vertical ducts; Channels, e.g. for drainage
    • E04F17/10—Arrangements in buildings for the disposal of refuse
    • E04F17/12—Chutes
    • 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
    • B65G51/00—Conveying articles through pipes or tubes by fluid flow or pressure; Conveying articles over a flat surface, e.g. the base of a trough, by jets located in the surface
    • B65G51/02—Directly conveying the articles, e.g. slips, sheets, stockings, containers or workpieces, by flowing gases

Definitions

  • ABSTRACT Apparatus for disposing of materials packed in bags and the like comprising a main duct in which at least one infeed duct opens downstream of a fan which feeds air under pressure into the main duct and upstream of an outlet.
  • the main duct comprises a single gate located at its outlet end with no further obturation, the gate opening outwards and being urged to its closed position.
  • a non-return valve opens outwardly from the main duct to the atmosphere and is disposed in the immediate vicinity upstream of the outlet.
  • At least one propulsive assembly is coupled to the main duct at a location between the infeed duct and the outlet.
  • a suction is produced in the main duct by the propulsive assembly to promote advance of the material in the main duct conjointly with the fan until the material reaches the propulsive assembly whereupon in order to urge the material further downstream towards the outlet the propulsive assembly produces pressure and the material advances under the pressure of the fan and that of the propulsive assembly.
  • This apparatus has many drawbacks on account of the extremely diverse nature of the waste which is introduced into it, and which necessitates extremely powerful fans and also ducting which is particularly resistant both to abrasion and shocks.
  • the waste which is conveyed directly in the ducts, has the disadvantage of producting clinging deposits which result, for example, from the fact that paper can adhere to sticky and greasy residues.
  • extremely powerful fans are used which operate for a relatively long time and which have the resultant deficiency of causing considerable clouds of dust at the outlet of the ducts by reason of the fact that they forcibly expel the lighter and dryer particles.
  • Pneumatic transportation devices are also known for objects of consistent dimensions exactly matched to those of the tubes. Because of this match, the energy losses are small and in any case, since the weight of the object is small, the installations may be simple and reliable.
  • the present invention relates to the transportation of relatively bulky bags or the like which are heavy and of irregular dimensions. It thus applies to the disposal of roughly packed waste, rubbish and other materials.
  • the invention contemplates in apparatus for discharging materials packed in bags or the like, of the type including a main duct into which an infeed duct opens downstream of a fan and upstream of an outfeed, wherein the main duct is closed at its outfeed by an outward-opening gate which is returned to its closed position, a non-return valve which allows air to leave but not to enter being provided in the immediate vicinity of the outfeed from the duct.
  • the non-return valve may be pre-loaded, and the apparatus may include at least one extra fan situated outside the main duct but connecting with it through two passages, both situated downstream of the infeed duct but one upstream of the other and both open to the atmosphere, each of these passages containing a movable closure valve which can occupy one of two positions as required, in the first of which the downstream passage is closed to atmosphere and open to the duct while the upstream passage is closed to the duct'and open to atmosphere, while in the second position the downstream passage is closed'to the duct and open to atmosphere while the upstream passage is closed to atmosphere and open to the duct.
  • the two valves in each assembly may be controlled in synchronization by a drive device such as a hydraulic or pneumatic ram, an electro-magnet, or other similar device.
  • a drive device such as a hydraulic or pneumatic ram, an electro-magnet, or other similar device.
  • the main duct Downstream of at least the first assembly, the main duct is advantageously equipped with a member which senses the presence of a bag or the like containing the waste or rubbish, this member controlling the motor belonging to the valves in one or more assemblies.
  • Each infeed duct may be equipped with a member which senses the presence of an outer bag containing waste or rubbish, this member controlling one or more fan motors, and the sensing member may control the fan motor or motors and the valve motor in each assembly.
  • At least one of the infeed ducts preferably communicates with an opening fitted with a gate which is able to accept waste or rubbish other than that introduced through the infeed proper.
  • the gate may have a catch which is associated with a member which senses the presence of a bag or the like and which is situated at the outfeed from the main duct so that the gate is held closed when the fan is operating.
  • the sensing member provided in each infeed duct controls both the motor of the main fan, the motor of one or more auxiliary fans and the corresponding closure valves so that the whole through-put of air pumped by the main fan is absorbed by the total suction throughput of the auxiliary fans, with the possible addition of the through-put through the non-return valve.
  • the maximum flow through the non-return valve may be at least equal to that from the main fan, and the two passages associated with the same auxiliary fan, which open into the main duct, may be separated from one another by a distance at least equal to the length of the largest bag or the like which is intended to move through the duct.
  • the suction power of the auxiliary fans may be at least equal to the pressure loss occurring upstream of the main fan.
  • the main duct preferably communicates with a building into which the infeed duct or ducts open by a passage situated upstream of the fan, and this passage may be fitted with a movable and adjustable closure member enabling the suction flow to be adjusted in the building.
  • Each infeed duct may be fitted with a non-return valve situated immediately upstream of the main duct.
  • FIGS. 1 and 2 are schematic cross-sections of apparatus according to the invention in which the auxiliary fan assemblies are shown in two different positions.
  • the apparatus comprises a main duct 1, containing a fan 2, and communicating with the atmosphere at its end 3, and which has one or more sloping infeed ducts 4.
  • two passages 5 and 6 open into the duct 1 and communicate with the atmosphere at their ends 7 and 8.
  • the two passages 5 and 6 are linked by a passage 9 in which is situated an auxiliary fan 10.
  • the two passages 5 and 6 contain closure valves 11 and 12 which are pivotally mounted on axles l3 and 14.
  • the fan 10 always turns in the same direction but, depending on the position of the valves 11 or 12 (see FIGS. 1 and 2 respectively) there is either suction from, or delivery into, the duct 1, in the following way.
  • valve 11 In the position shown in FIG. 1, the valve 11 is in its lowermost position, while the valve 12 is in its uppermost position so that rotation of the fan 10 causes suction in the interior of the duct 1 and delivery to atmosphere through the passages 6, 9 and 7.
  • valve 11 in its uppermost position, while the valve 12 is in its lowermost position, and the rotation of the fan 10 (which is still in the same direction) causes suction from atmosphere through the passage 6 and delivery into the duct 1 through the passage 5.
  • This installation is particularly applicable to dwellings which are equipped with waste-disposal units terminating at a building in which the rubbish is packed in bags or the like using any known means.
  • the mouth of the infeed duct 4 is located in this building and it is advisable to provide an auxiliary duct 27 which also opens into the building and which includes an adjustable closure member 28 so that a pressure drop occurs in the building each time the fan 2 is started up, which enables smells, dust, etc., to be removed.
  • This infeed duct 29 is provided with a cover 30 fitted with a catch 31. which is attached to a control member such as an electro-magnet, the energization circuit of which is connected on the one hand to that of the fan 2, and, on the other hand, to that of a photoelectric cell 25.
  • a control member such as an electro-magnet
  • the cover 30 is held firm by the catch 31 when the fan 2 is running to prevent premature suction through the duct 29 when some person wishes to deposit a bag of rubbish.
  • the outfeed from the duct 1 can be situated in any desired building and may open, for example, above a hopper, a railway dump-truck, a vehicle or any other appropriate piece of equipment.
  • Two valves 21 and 22 form an outfeed gate from the main duct 1 and can close in a substantially sealed manner to prevent any entry of air.
  • a pre-loaded non-return valve 32 which allows a controlled outward flow of air but prevents any entry, as will be explained below.
  • the spacing between the two passages 5 and 6 is greater than the length of the longest bag A, so that the two passages can never be simultaneously blocked by a bag.
  • a member 33 which senses the presence of the bag acts on the motor 2 of the main fan and on the motors 10 of the auxiliary fans to activate them.
  • the member 33 also acts on 11 and the valves 12 so that the fans 10 operate in suction from the duct 1 to atmosphere.
  • valves 11 and 12 are set to their suction orientation under the control of the member 33.
  • valves 11 and 12 may be constantly biassed to this position and for them to be orientated, one by one, by the members 19, 20 to the delivery position, using electro-magnets for example.
  • the air delivered intothe duct 1 by the main fan 2 comes from the atmosphere through the duct 3, which has a filter 34, and from the building where the bags are fed in.
  • the air from the building passes into the duct 27 which has adjustable flow valve 28 and a filter 35.
  • the air thus sucked in through the filters 34 and 35 is delivered into the main duct 1 from which it emerges through the passages 6, 9 and 7, being sucked in by the fans 10.
  • the duct 4 is of circular section but in order to envelope the bags completely, flaps 15 and 16 are provided which are rectangular and form a square which is contained within a square-section segment 36 of the duct.
  • the joint portions must be worked out so that the induction effect is not disturbed by turbulence tending to pump air back into the duct 4. They should, of course, be matched to the bags passing from the duct 4 into theduct 1.
  • the pressure from the main fan 2 is adequate at the beginning. Its throughput of air is fully absorbed by the suction of the fans 10 and, if desired, by the valve 32 which is pre-loaded to open to atmosphere as soon'as the over-pressure in the duct 1 reaches a predetermined adjustable value.
  • This valve 32 may be of any known type using'a spring, a counterweight, etc.
  • the members 19 and may advantageously be provided not downstream of the passage 6 as shown, but upstream of the passage 6.
  • the time required to pivot the valves 11 and 12 is, in fact, relatively long and it is advisable that the valves come into action in as accurate a manner as possible.
  • the power of the fans 10 must be at least equal to the pressure loss to which the fan 2 is subjected in the duct 1 between the point where it is located and the first passage 5.
  • Apparatus for disposing of materials packed in bags and the like comprising a main duct having opposite ends, a fan in said main duct, at least one infeed duct opening into the main duct downstream of said fan,'a single gate located at one of said ends of the duct and serving as an outlet, said duct being completely open and non-obturated between said fan and said gate, said gate opening outwards and being constantly urged to a closed position, a non-return valve coupled to said main-duct to connect said main duct to the atmosphere, said nonreturn valve being disposed in the immediate vicinity upstream of said outlet of the main duct, and at least one propulsive means coupled to said main duct at a location between said infeed duct and said outlet for producing suction in said main duct to promote advance of the material in said main duct until the material reaches said propulsive means whereupon said propulsive means produces pressure in said main duct to urge the material further downstream towards said outlet concurrently with the pressure of said fan.
  • said propulsive assembly comprises two pipes each having one end connected to the atmosphere and an opposite end connected to the main duct, the first of said pipes being disposed downstream of the other pipe'along said main duct by a distance only slightly greater than the length of one bag of material to be conveyed in said main duct, a further pipe connecting said two pipes together, a one-way fan in said further pipe, and a closure valve in each of said two pipes, each closure valve having two positions, in the first of which the downstream pipe is closed to the atmosphere and open to the duct while the upstream pipe is closed to the duct and open to the atmosphere while in the second position the downstream pipe is closed to the duct and open to the atmosphere while the upstream pipe is closed to the atmosphere and open to the duct, so that one of said pipes is only used for sucking air into the main duct while the other of said pipes is only used for forcing air into the said main duct.
  • Apparatus as claimed in claim 2 comprising con.- trol means for said closure valves of said propulsive assembly for alternatively setting both closure valves in their respective positions.
  • control means comprises a sensor disposed downstream of said propulsive means for sensing the presence of a bag of material to adjust the positions of the valves.
  • Apparatus as claimed in claim 2 comprising sensing means in said infeed duct for sensing the presence of a bag of material and controlling operation of said fan in response thereto.
  • Apparatus as claimed in claim 2 comprising a sensor means in said main duct proximate said outlet for sensing the presence of a bag of material and controlling operation of said fan in response thereto.
  • Apparatus as claimed in claim 1 comprising means having an opening with a gate connected to said infeed duct for introduction of waste in addition to the material introduced in said infeed duct.
  • said gate includes a catch, and comprising a sensing means situated at the outlet of the main duct and associated with said gate for sensing the presence of a bag of material, for holding the gate in closed position when the fan is operating.
  • Apparatus as claimed in claim 13 comprising a passage situated upstream of the fan and leading into said main duct for communication with a building into which said infeed duct opens.
  • Apparatus as claimed in claim 13 comprising a movable, adjustable closure member in said passage for adjusting the suction flow to the building.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bag Frames (AREA)
  • Refuse Collection And Transfer (AREA)
US00334890A 1972-02-24 1973-02-22 Method and device for discharging rubbish and waste through pneumatic ducts Expired - Lifetime US3853355A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7206208A FR2173428A5 (pl) 1972-02-24 1972-02-24
FR7237013A FR2204204A6 (pl) 1972-10-19 1972-10-19

Publications (1)

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US3853355A true US3853355A (en) 1974-12-10

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US00334890A Expired - Lifetime US3853355A (en) 1972-02-24 1973-02-22 Method and device for discharging rubbish and waste through pneumatic ducts

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US (1) US3853355A (pl)
BE (1) BE795469A (pl)
CH (1) CH571444A5 (pl)
ES (1) ES411824A1 (pl)
IT (1) IT979407B (pl)
NL (1) NL7302168A (pl)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999487A (en) * 1975-04-14 1976-12-28 Valverde Rene L Pneumatic transportation system
US4094551A (en) * 1975-06-04 1978-06-13 National Research Development Corporation Material conveying systems
US4941777A (en) * 1987-01-06 1990-07-17 Home Courier Corporation Apparatus for conveying material
US4948302A (en) * 1988-02-05 1990-08-14 Avdel Systems Limited Discharge apparatus for broken-off fastener parts
US6322295B1 (en) 1999-11-18 2001-11-27 Dino Gabriele Pneumatic apparatus and method for transporting irregularly-shaped objects
US20130209182A1 (en) * 2010-11-01 2013-08-15 Maricap Oy Method and apparatus in a pneumatic material conveying system
US20130220893A1 (en) * 2010-09-22 2013-08-29 Averda Ip B.V. Apparatus and method for processing bagged refuse
US20150321844A1 (en) * 2012-07-02 2015-11-12 Maricap Oy Method and apparatus for handling material in a pneumatic materials handling system
US20190016532A1 (en) * 2016-01-07 2019-01-17 Maricap Oy Method, apparatus and system for handling waste material
CN111498504A (zh) * 2020-04-27 2020-08-07 杭州丙甲科技有限公司 长距离配送用于包裹打包的气泡袋的方法
US11565892B2 (en) * 2020-07-08 2023-01-31 Trans-Vac Systems LLC Methods and systems for operation of a vacuum transport system
US11999577B2 (en) 2019-11-18 2024-06-04 George Archambault Methods and systems for managing airflow in conduits and pneumatic tubes

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148845A (en) * 1961-05-23 1964-09-15 Int Standard Electric Corp Pneumatic tube system for high carrier speeds
US3232559A (en) * 1964-03-11 1966-02-01 Diebold Inc Air shifter construction for pneumatic systems
US3237881A (en) * 1963-06-25 1966-03-01 Diebold Inc Pneumatic system carrier arrester construction
US3305191A (en) * 1964-06-29 1967-02-21 Int Standard Electric Corp Pneumatic tube system with a long driving section and for high speed of the carriers
US3408113A (en) * 1966-08-24 1968-10-29 Bouladon Gabriel Pneumatic transport means
US3556603A (en) * 1968-05-30 1971-01-19 Tobacco Res & Dev Pneumatic conveyance of rod-shaped articles
US3588176A (en) * 1968-11-13 1971-06-28 Ibm Article transport system and method
US3687503A (en) * 1969-10-29 1972-08-29 Centralsug Ab System for pneumatic transfer of goods

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148845A (en) * 1961-05-23 1964-09-15 Int Standard Electric Corp Pneumatic tube system for high carrier speeds
US3237881A (en) * 1963-06-25 1966-03-01 Diebold Inc Pneumatic system carrier arrester construction
US3232559A (en) * 1964-03-11 1966-02-01 Diebold Inc Air shifter construction for pneumatic systems
US3305191A (en) * 1964-06-29 1967-02-21 Int Standard Electric Corp Pneumatic tube system with a long driving section and for high speed of the carriers
US3408113A (en) * 1966-08-24 1968-10-29 Bouladon Gabriel Pneumatic transport means
US3556603A (en) * 1968-05-30 1971-01-19 Tobacco Res & Dev Pneumatic conveyance of rod-shaped articles
US3588176A (en) * 1968-11-13 1971-06-28 Ibm Article transport system and method
US3687503A (en) * 1969-10-29 1972-08-29 Centralsug Ab System for pneumatic transfer of goods

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3999487A (en) * 1975-04-14 1976-12-28 Valverde Rene L Pneumatic transportation system
US4094551A (en) * 1975-06-04 1978-06-13 National Research Development Corporation Material conveying systems
US4941777A (en) * 1987-01-06 1990-07-17 Home Courier Corporation Apparatus for conveying material
US4948302A (en) * 1988-02-05 1990-08-14 Avdel Systems Limited Discharge apparatus for broken-off fastener parts
US6322295B1 (en) 1999-11-18 2001-11-27 Dino Gabriele Pneumatic apparatus and method for transporting irregularly-shaped objects
US9259764B2 (en) * 2010-09-22 2016-02-16 Averda Ip B.V. Apparatus and method for processing bagged refuse
US20130220893A1 (en) * 2010-09-22 2013-08-29 Averda Ip B.V. Apparatus and method for processing bagged refuse
US9187266B2 (en) * 2010-11-01 2015-11-17 Maricap Oy Method and apparatus in a pneumatic material conveying system
US20130209182A1 (en) * 2010-11-01 2013-08-15 Maricap Oy Method and apparatus in a pneumatic material conveying system
US20150321844A1 (en) * 2012-07-02 2015-11-12 Maricap Oy Method and apparatus for handling material in a pneumatic materials handling system
US20190016532A1 (en) * 2016-01-07 2019-01-17 Maricap Oy Method, apparatus and system for handling waste material
US10689192B2 (en) * 2016-01-07 2020-06-23 Maricap Oy Method, apparatus and system for handling waste material
US11999577B2 (en) 2019-11-18 2024-06-04 George Archambault Methods and systems for managing airflow in conduits and pneumatic tubes
CN111498504A (zh) * 2020-04-27 2020-08-07 杭州丙甲科技有限公司 长距离配送用于包裹打包的气泡袋的方法
CN111498504B (zh) * 2020-04-27 2021-04-06 杭州丙甲科技有限公司 长距离配送用于包裹打包的气泡袋的方法
US11565892B2 (en) * 2020-07-08 2023-01-31 Trans-Vac Systems LLC Methods and systems for operation of a vacuum transport system

Also Published As

Publication number Publication date
ES411824A1 (es) 1976-05-16
CH571444A5 (pl) 1976-01-15
NL7302168A (pl) 1973-08-28
BE795469A (fr) 1973-05-29
IT979407B (it) 1974-09-30

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