US3450333A - Installations for sucking off and separation of waste products of working machines and centrifugal air pumps for use with it - Google Patents

Installations for sucking off and separation of waste products of working machines and centrifugal air pumps for use with it Download PDF

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Publication number
US3450333A
US3450333A US611004A US3450333DA US3450333A US 3450333 A US3450333 A US 3450333A US 611004 A US611004 A US 611004A US 3450333D A US3450333D A US 3450333DA US 3450333 A US3450333 A US 3450333A
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US
United States
Prior art keywords
air
wall
pump
waste products
delivery channel
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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
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US611004A
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English (en)
Inventor
Casper Nihot
Evert Rudolf Nihot
Petrus Andre Henri Saueressig
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D23/00—Other rotary non-positive-displacement pumps
    • F04D23/001—Pumps adapted for conveying materials or for handling specific elastic fluids
    • F04D23/003—Pumps adapted for conveying materials or for handling specific elastic fluids of radial-flow type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042—Devices for removing chips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
    • B24B55/06—Dust extraction equipment on grinding or polishing machines
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • a spiral-shaped widening delivery channel of the pump is extended beyond the beginning thereof to such a degree that the particles to be separated and displaced outwardly at such location also can separate and group together according to their weight so that the separation of the quantity of the air containing the relatively heavy waste products occurs in the outlet of the centrifugal air pump.
  • the invention relates to an installation for aspirating and separating the waste products of working machines, and more particularly wood working machines, with the aid of air as a transport medium, which is driven by means of a centrifugal air pump or exhauster working as suction and pressure pump, and behind which a separation takes place in a part of the air with the relatively heavy waste products, which are carried off to a store room, with the rest being transported through a dust filter and from which the air can recovered.
  • the separate pre-separator is a device which is specially developed for this purpose and has to work the whole quantity of air passing therethrough and is therefore relatively large and expensive thus augmenting the costs of the installation.
  • the parts are necessarily built up near one another which is a drawback in many cases in view of the necessary space.
  • the object of the invention is to overcome these drawbacks.
  • the waste products thereafter can be further separated from the transport air in a small cyclone separator and carried away to a store room, while the transport air which no longer contains objectionable impurities can be passed directly into the atmospheric air without causing any inconvenience.
  • the rest of the air is conducted through a dust filter in usual manner and returned to the work room and recovered in a known manner.
  • a separating wall is provided near the outer wall, which wall separates a small portion of the passing air stream flowing along the outer wall of the pump and which contains the most impure air.
  • This impure air can then be carried away in a known manner to the store room or a similar waste collecting room, to the air delivery of which a (cyclone) separator is connected, which, in view of the small amounts of air to be treated, need not be large.
  • the store room with the separator can, in this case, be built up quite independently of the exhauster, at an adequate location similar to the small dust filter necessary for cleaning the air to be returned to the work room.
  • the separating wall is further advantageously arranged in such a manner that it leads an amount of about 10-25%, preferably of about 15-20%, along the outer wall of the centrifugal air pump to the final separator.
  • the loss of heated air is then limited to the percentages mentioned, which are known in this order of magnitude.
  • the separating wall is preferably extended at the free end which is directed inwardly with a hinged adjustable baffle.
  • the fine impurities can be carried off with the main mass of the passing transport air to the dust filter.
  • a small dust filter suffices for this purpose and has to work such a small amount of dust that under definite conditions it must be cleaned but once a month, or even after a still longer period. It appears that by the centrifugal force in the centrifugal air pump practically all impurities, with the exception of a small portion of very fine dust-like im purities, are thrown to the outer wall of the pump housing and are carried away with that portion of the transport air which is delivered to the end separator.
  • the invention also comprises the centrifugal air pump to be used with the above described installation, and which pump is appropriately formed so that the pump housing possesses a spiral-shaped widening delivery channel extending more than 360, and in the outlet of which, in
  • a separating wall is arranged, whereby a definite percentage of the air stream passing along the outside is separated from the remainer.
  • the pump is preferably constructed in such a manner that the separating wall can separate about 1025% of the amount of air passing along the outside.
  • a particularly favourable construction of the centrifugal air pump or exhauster is obtained if the delivery channel extends about 450 around the spindle of the pump rotor and the outer wall is continued tangentially some distance so that between this tangential end portion and the bent outer wall of the delivery channel lying at the inside thereof a widening outlet of the delivery channel is provided, and across which a bridge strip is fixed supporting the separating wall.
  • the relatively heavy waste products have had the opportunity to move to the outer wall of the pump housing and that in the parts near the separating wall no new admittance of air with impurities can occur any longer in a radial direction.
  • the separating wall in the widening mouth of the outlet of the air pump housing serves for enabling the establishment of good connections of the further separated air streams via bridging strip without the total cross-sectional area of the outlet of the air pump being reduced.
  • the pump is perferably formed in such a manner that the separating wall is provided at the inner end with a hinged extension, which is adjustable from the outside, whereby the amount of air delivered along the outside can be further adjusted.
  • the air pump is preferably constructed in such a manner that the real starting point of the spiral shaped delivery channel is displaced at an angle of about 35-50 in the direction of the air stream with respect of the theoretical starting 'point. Consequently, it is avoided with certainty that the separation could be affected by relatively large and/or large impurities thrown directly into the outlet by the pump rotor.
  • FIG. 1 is a view in side elevation of a centrifugal air pump or exhauster according to the invention.
  • FIG. 2 is a view in front elevation of the outlet side of the pump illustrated in FIG. 1.
  • 1 is a pump spindle of a centrifugal air pump which is driven by an electric motor 2 mounted on a bracket 3 located beside a pump housing 4.
  • the spindle 1 extends through a bearing sleeve 5 and carries a pump rotor 6, which is provided with radial blades of the desired configuration.
  • an opening 7 in the housing 4 Opposite to the rotor 6 and co-axial therewith is an opening 7 in the housing 4 for the introduction of the pump rotor.
  • the edge of the opening 7 is provided with an internal reinforcing ring 8 and the opening can be closed by a cover 9 having a central inlet opening to which a main suction line 11 is connected.
  • the line 11 is provided with branch pipes (not shown) in the usual manner which lead to the suction locations at the working machines.
  • branch pipes (not shown) in the usual manner which lead to the suction locations at the working machines.
  • the wall 12 begins theoretically about at the level of a horizontal diametrical plane 1313 of the pump, but in 4 practice a relatively large play is used betwben the pump rotor and the beginning of the wall 12, so that in the known exhausters, the end edge of the outer wall lies about at 6070 and in the present invention appropriately at a somewhat smaller distance, such as for example about 50, displaced in the direction of rotation (in a clockwise direction) of the rotor 6 and about at the level of the outer edge of the reinforcing ring 8 as indicated at 14.
  • the outer wall 12 runs from the horizontal diametrical plane 13-43 tangentially straight upwardly and a parallel inner wall for the delivery channel is arranged so that the delivery channel extends to about 360.
  • the delivery channel runs still further in a spiralshape to 90 and therefore extends 450 around the spindle of the rotor and only thereafter, starting from a vertical diametrical plane 15-15 through the pump spindle, outer wall 12a of the pump housing extends further horizontally to outlet 16, which is arranged in a tangential vertical end wall 17 at the right of the housing.
  • a bridging member 18 is arranged which lies parallel to the outer wall of the delivery channel and on and which a separating wall 19 is fixedly arranged which projects inwardly.
  • the distance from the upper edge of the bridging member 18 or from the upper face of the separating wall 19 to the wall 12a is selected so that by virtue of the separating wall about 15-20% of the total passing air stream is allowed to pass at that side.
  • the rest of the air stream is carried away along the inner side of the separating wall 19 and the bridging member 18 through under portion 16b of the outlet opening which is delimited at the under side by an inner wall 20.
  • a further extension 21 is arranged rotatably on a spindle 22.
  • the extension 21 can be adjusted from the outside with the aid of a grip (not shown) and fixing means, comprising a fixing bow or segment 23, at a desired branching percentage lying between about 10-25% through the delivery opening 16a.
  • the openings 16a and 16b are provided with upstanding edges 24 and 25, to :which in practice the pipes to the final separator (cyclone) and the dust filter respectively (not shown) can be connected.
  • the end separator can, as the amount of air to be worked is relatively small, be correspondingly small, as well as the filter because with the present air pump as experiments have shown, practically all impurities are carried away through the outlet 16a.
  • a particular advantage of the invention is that it is not necessary to build the entire installation together, such 'as the air pump, the store room, the dust filter and the final separator, but such parts may all be arranged at an arbitrary adeqaute location.
  • An installation for aspirating and separating waste products of working machines and more particularly wood working machines in which air is employed as a transport medium comprising a housing, a centrifugal air moving means mounted within the housing, said housing having an inlet opening through which air and waste products are drawn into the housing from the working machines, said housing including wall means defining a spiral-shaped widening delivery channel extending perpendicular to the axis of the air moving means, said delivery channel being located behind the air moving means and provided with an outlet, said delivery channel being extended beyond the beginning thereof to such an extent that the particles to be separated and displaced at such location can separate and group together according to their Weight so that the separation of a quantity of transport air containing relatively heavy waste products occurs in the outlet, a separating Wall extending inwardly in th outlet of the delivery channel Serving to separate a small part of the passing air stream flowing along the outer wall of the delivery channel and which contains the most impure air, an adjustable hinged bafile at the free end of the separating wall, said separating wall being so arranged that it
  • An installation for aspirating and separating waste products of working machines and more particularly wood working machines in which air is employed as a transport medium comprising a housing, a centifugal air moving means mounted within the housing, said housing having an inlet opening through which air and waste products are drawn into the housing from the working machines, said housing including wall means defining a spiral-shaped widening delivery channel extending perpendicular to th axis of the 'air moving means, said delivery channel being located behind the air moving means and provided with an outlet, said delivery channel being extended beyond the beginning thereof to such an extent that the particles to be separated and displaced at such location can separate and group together according to their weight so that the separation of a quantity of transport air containing relatively heavy waste products occurs in the outlet, a separating Wall in the outlet of the delivery channel serving to separate a small part of the passing air stream flowing along the outer wall of the delivery channel and which contains the most impure air, said separating wall being so arranged that it leads an amount of approximately 10-25 percent along the outer wall of the delivery channel to a

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cyclones (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Refuse Collection And Transfer (AREA)
US611004A 1966-01-28 1967-01-23 Installations for sucking off and separation of waste products of working machines and centrifugal air pumps for use with it Expired - Lifetime US3450333A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6601163A NL6601163A (de) 1966-01-28 1966-01-28

Publications (1)

Publication Number Publication Date
US3450333A true US3450333A (en) 1969-06-17

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US611004A Expired - Lifetime US3450333A (en) 1966-01-28 1967-01-23 Installations for sucking off and separation of waste products of working machines and centrifugal air pumps for use with it

Country Status (7)

Country Link
US (1) US3450333A (de)
BE (1) BE693017A (de)
DE (2) DE1481380B2 (de)
FR (1) FR1508637A (de)
GB (1) GB1176031A (de)
LU (1) LU52876A1 (de)
NL (1) NL6601163A (de)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047912A (en) * 1976-06-11 1977-09-13 Consolidated Freightways, Inc. Turbocharger and air cleaner device
US4996850A (en) * 1989-02-16 1991-03-05 Coleman R.V. Products, Inc. Air conditioner with exhaust feature
US8147581B1 (en) * 2009-01-29 2012-04-03 Watterman Jr John K Gas solid mixture separator
US20120288384A1 (en) * 2011-05-12 2012-11-15 Adda Corp. Heat-dissipation fan
US20170177009A1 (en) * 2015-12-17 2017-06-22 Venturedyne, Ltd. Environmental sensor and method of operating the same
US9857285B2 (en) 2015-12-17 2018-01-02 Venturedyne, Ltd. Environmental sensor and method of operating the same
WO2019028951A1 (zh) * 2017-08-10 2019-02-14 南通耀龙金属制造有限公司 一种管道抛光设备用通风除尘装置
US10557472B2 (en) 2015-12-17 2020-02-11 Venturedyne, Ltd. Environmental sensor and method of operating the same
US10612436B2 (en) * 2017-09-26 2020-04-07 United Technologies Corporation Deoiler for a gas turbine engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2948064A1 (de) * 1979-11-29 1981-06-04 Friedrich Duss Maschinenfabrik GmbH & Co, 7265 Neubulach Motorisch angetriebene absaugvorrichtung
DE4426717A1 (de) 1994-07-21 1996-01-25 Black & Decker Inc Vorrichtung, insbesondere Oberfräse zur spanabhebenden Bearbeitung eines Werkstückes
CN111617546A (zh) * 2020-04-29 2020-09-04 西南电子技术研究所（中国电子科技集团公司第十研究所） 可自动排液的切削液过滤罐

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US449743A (en) * 1891-04-07 Fan-blower
CH105617A (de) * 1923-05-08 1924-07-01 Lever Rushton James Förderleitung für pneumatische Förderung von Fasermaterial.
GB218097A (en) * 1923-06-21 1924-07-03 Davidson & Co Ltd Improvements in and relating to dust collectors or separators and the like
GB236452A (en) * 1924-12-01 1925-07-09 Jens Peter Spangenberg Centrifugal process and apparatus for separating particles from fluid streams
DE418544C (de) * 1924-05-11 1925-09-09 Hermann Wolff Foerder- und Reinigungsgeblaese fuer Getreide
DE502158C (de) * 1930-07-09 Kurt Kaewel Zentrifugalgeblaese zur Entaschung oder Entstaubung von Rauchgasen oder Luft
US2282015A (en) * 1939-11-13 1942-05-05 Chrysler Corp Air conditioning unit
US2289474A (en) * 1937-05-18 1942-07-14 American Blower Corp Apparatus for dust collection

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US449743A (en) * 1891-04-07 Fan-blower
DE502158C (de) * 1930-07-09 Kurt Kaewel Zentrifugalgeblaese zur Entaschung oder Entstaubung von Rauchgasen oder Luft
CH105617A (de) * 1923-05-08 1924-07-01 Lever Rushton James Förderleitung für pneumatische Förderung von Fasermaterial.
GB218097A (en) * 1923-06-21 1924-07-03 Davidson & Co Ltd Improvements in and relating to dust collectors or separators and the like
DE418544C (de) * 1924-05-11 1925-09-09 Hermann Wolff Foerder- und Reinigungsgeblaese fuer Getreide
GB236452A (en) * 1924-12-01 1925-07-09 Jens Peter Spangenberg Centrifugal process and apparatus for separating particles from fluid streams
US2289474A (en) * 1937-05-18 1942-07-14 American Blower Corp Apparatus for dust collection
US2282015A (en) * 1939-11-13 1942-05-05 Chrysler Corp Air conditioning unit

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047912A (en) * 1976-06-11 1977-09-13 Consolidated Freightways, Inc. Turbocharger and air cleaner device
US4996850A (en) * 1989-02-16 1991-03-05 Coleman R.V. Products, Inc. Air conditioner with exhaust feature
US8147581B1 (en) * 2009-01-29 2012-04-03 Watterman Jr John K Gas solid mixture separator
US20120288384A1 (en) * 2011-05-12 2012-11-15 Adda Corp. Heat-dissipation fan
US20170177009A1 (en) * 2015-12-17 2017-06-22 Venturedyne, Ltd. Environmental sensor and method of operating the same
US9857285B2 (en) 2015-12-17 2018-01-02 Venturedyne, Ltd. Environmental sensor and method of operating the same
US9983596B2 (en) * 2015-12-17 2018-05-29 Venturedyne, Ltd. Environmental sensor and method of operating the same
US10557472B2 (en) 2015-12-17 2020-02-11 Venturedyne, Ltd. Environmental sensor and method of operating the same
WO2019028951A1 (zh) * 2017-08-10 2019-02-14 南通耀龙金属制造有限公司 一种管道抛光设备用通风除尘装置
US10612436B2 (en) * 2017-09-26 2020-04-07 United Technologies Corporation Deoiler for a gas turbine engine

Also Published As

Publication number Publication date
BE693017A (de) 1967-07-24
NL6601163A (de) 1967-07-31
DE1481380A1 (de) 1969-07-03
FR1508637A (fr) 1968-01-05
DE1963523U (de) 1967-07-06
LU52876A1 (de) 1967-03-28
DE1481380B2 (de) 1975-03-27
GB1176031A (en) 1970-01-01

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