WO2011139143A1 - Système de décapage d'objets à l'aide d'une tête de décapage et d'un agent de décapage - Google Patents

Système de décapage d'objets à l'aide d'une tête de décapage et d'un agent de décapage Download PDF

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Publication number
WO2011139143A1
WO2011139143A1 PCT/NL2011/000036 NL2011000036W WO2011139143A1 WO 2011139143 A1 WO2011139143 A1 WO 2011139143A1 NL 2011000036 W NL2011000036 W NL 2011000036W WO 2011139143 A1 WO2011139143 A1 WO 2011139143A1
Authority
WO
WIPO (PCT)
Prior art keywords
blasting
fluid
conduit
head
supply unit
Prior art date
Application number
PCT/NL2011/000036
Other languages
English (en)
Inventor
Gerardus Anthonius Vink
Original Assignee
Lasbedrijf Vink B.V.
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
Application filed by Lasbedrijf Vink B.V. filed Critical Lasbedrijf Vink B.V.
Priority to EP11731138A priority Critical patent/EP2566659A1/fr
Publication of WO2011139143A1 publication Critical patent/WO2011139143A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B24C7/003—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with means for preventing clogging of the equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B24C7/0015—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier
    • B24C7/0023—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier with control of feed parameters, e.g. feed rate of abrasive material or carrier of feed pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0007—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier
    • B24C7/0038—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a liquid carrier the blasting medium being a gaseous stream
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0084—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a mixture of liquid and gas

Definitions

  • the present invention refers to a system for blasting objects via a blasting head with a blasting medium containing a blasting fluid constituted by a mixture of a transport fluid and an abrasive material, which blasting fluid can be supplied to the blasting head via a first conduit connected to the blasting head and where air or any other gas or gas mixture, for brevity's sake called compressed air hereinafter, is supplied to the blasting head via a second conduit, in order to be combined there with the blasting fluid supplied to the blasting head, to form said blasting medium which, under the influence of the supply pressure and/or the air, is forcibly sprayed (or squirted) from the blasting head against the object to be blasted.
  • a blasting medium constituted by a mixture of a transport fluid and an abrasive material
  • the invention is related to a system as described in an earlier patent application of the same applicant, namely a system for blasting objects with a blasting medium consisting of a liquid, a substantially insoluble abrasive material and air, the blasting medium being sprayed by the spray nozzle against the object, collected by collecting means and conditioned by supply means in order to reuse.
  • the present invention therefore includes the objective to provide means by which the normal operation of the installation in an emergency can be quickly stopped, thereby preventing the abrasive material to disable the installation.
  • the blasting head is connected through the first and second conduit, to a supply unit controlled by a control element for fluid and air respectively, and is further provided with a switch, for example in the form of a dead man's handle or emergency button, on or near the blasting head, the switch being connected during operation to the control element of the supply unit, such that - in a first state of the switch the supply pressure of the blasting fluid and/or the air has a value by which the blasting medium is forcibly sprayed from the blasting head against the object to be blasted, and
  • the supply pressure of the blasting fluid and/or the air is changed such that the force and/or the speed of the blasting medium spraying from the blasting head is decreased, however, by applying such control by the control element over the supply unit, that in particular is prevented that the first conduit and/or the blasting head are blocked or obstructed by settlement of the abrasive material within the blasting fluid.
  • Figure 1 schematically shows a first preferred embodiment of the system according to the invention
  • Figure 2 schematically shows a second preferred embodiment of the system according to the invention
  • Figure 3 schematically shows a third preferred embodiment of the system according to the invention.
  • Figure 4 schematically shows a fourth preferred embodiment of the system according to the invention.
  • All figures 1 to 4 show schematically part of a system for blasting objects (not shown) by means of a blasting head 1 with a blasting medium 2, that contains a blasting fluid, comprising a mixture of a transport fluid and an abrasive material, wherein the blasting fluid is supplied to the blasting head through a first conduit 3 connected to the blasting head, and wherein the air is supplied to the blasting head through a second conduit 4, in order to combine it with the blasting fluid to the blasting head into the aforementioned blasting medium 2, which, under the influence of the supply pressure and/or the air, forcibly is sprayed from the blasting head against the object to be blasted.
  • a blasting medium 2 that contains a blasting fluid, comprising a mixture of a transport fluid and an abrasive material
  • the blasting head 1 is connected through the first conduit 3 and the second conduit 4 to a supply unit 6, controlled by a control element 5 for fluid and air respectively.
  • a switch 7 provided, for example in the form of a dead man's handle mounted upon the blasting head 1, the switch 7 is connected during operation (wired or wireless) to the control element 5 of the supply unit 6, such that in a first state of the switch 7 -in which the switch 7 is actuated by the operator of the blasting head 1- the supply pressure of the blasting fluid and/or the air has a value by which the blasting medium is forcibly sprayed from the blasting head against the object to be blasted.
  • the supply pressure of the blasting fluid and/or the air is changed such, that the force and/or the speed of the blasting medium 2 spraying from the blasting head is (strongly) decreased, however, by applying such control by the control element 5 over the supply unit 6, that is prevented -in particular- that the first conduit 3 and/or the blasting head 1 are blocked or obstructed by settlement of the abrasive material in the blasting fluid.
  • FIG. 1 shows schematically a first preferred embodiment of the invention in which the supply unit 6 is suitable, under the control of the control element 5, to supply the blasting head 1 through the first conduit 3 with either the blasting fluid or a washing fluid, in particular with rinsing fluid.
  • the supply unit 6 is controlled by the control element 5 such, that the supply unit 6 supplies the blasting fluid to the first conduit 3.
  • the supply unit 6 is controlled by the control element 5 such, that the supply unit 6 stops or reduces the supply of the blasting fluid to the conduit 3, and at least partially, substitutes by supplying washing fluid to the first conduit 3, so that the washing fluid washes away the abrasive material from the blasting fluid.
  • the supply of air, washing fluid and blasting fluid respectively, controlled the control element 5, is performed by means of pumps 8, 9 and 10 respectively (which in practice, may be located within or outside the supply unit 6.
  • the control element 5 controls the air supply from the air pump 8, and likewise the supply of the washing fluid and blasting fluid respectively of the washing fluid pump 9 and the blasting fluid pump 10 respectively.
  • the control element 5 is programmed such, that in the second state of the switch 7 the supply unit 6 also reduces or stops the air supply by shutting down or reducing in the second state of the switch 7 the air supply from the air pump 8 to the air conduit 3.
  • FIGS 2 and 3 show schematically the second respectively the third preferred embodiment of the invention, wherein, in both embodiments, in the first state of the switch 7, the supply unit 6 is controlled by the controller 5 such, that the supply unit 6 supplies the blasting fluid to the first conduit (the blasting fluid conduit 3) with normal operating pressure and speed.
  • the supply unit 6 is controlled by the control element 5 such, that the supply unit 6 decreases the supply pressure and/or speed of the blasting fluid to the first conduit 3, so that the pressure of the blasting medium 1 spraying from the blasting head 1 is substantially reduced and also its speed decreases, however, the flow of blasting fluid through the blasting fluid conduit 3 and through the blasting head 1 is sufficient enough in order to keep the abrasive material in motion in the blasting fluid within the first conduit 3.
  • the control element 5 is programmed such, that by bringing the switch 7 into the second state the air supply from the air pump 8 through the air conduit 4 and the blasting head 1 respectively is reduced or completely stopped.
  • FIG. 2 shows schematically a second preferred embodiment of the invention, wherein the supply unit 6 comprises a blasting fluid valve 13, controllable by the control element 5, the valve is positioned between the blasting fluid pump 10 and the first conduit 3, and wherein a bypass 14 is provided having a reduced passage width with respect to the passage width of the blasting fluid valve 13 in its open state.
  • the supply unit 6 In the first state of the switch 7, the supply unit 6 is controlled by the control element 5 such, that the blasting fluid valve 13 is open.
  • the supply unit 6 is controlled by the control element 5 such, that the blasting unit valve 13 is closed.
  • all blasting fluid is supplied by the bypass to the blasting fluid conduit 3, by which, due to the relatively high resistance of the bypass 14, the pressure and speed of the blasting fluid are significantly lower.
  • the passage width of the bypass 14 is such, that the flow speed of the blasting fluid through the blasting fluid conduit 3 and the blasting head 1 is sufficient in order to keep the abrasive material substantially in motion in the first conduit 3 and the blasting head 1 respectively.
  • FIG 3 shows schematically a third preferred embodiment of the invention, wherein the supply unit 6 comprises or is connected to a variable power and/or speed blasting fluid pump 10 controllable by the control element 5.
  • the blasting fluid pump 10 is controlled by the control element 5 such, that the pump capacity is sufficient for normal blasting operation, as a result of which the blasting medium 2 sprays with normal force and speed from the blasting head 1.
  • the blasting fluid pump 10 is controlled by the control element 5 such, that the pump power is reduced to a level which keeps the abrasive material substantially in motion in the blasting fluid in the first conduit 3 and/or in the blasting head 1.
  • Figure 4 shows schematically a fourth preferred embodiment of the invention, wherein in the second state of the switch 7 the supply unit 6 only stops or reduces the air supply from the air pump 8 to the air conduit 4.
  • This option will only be used when a very significant part of the force and speed with which the blasting medium -which is formed by combining the blasting fluid and the (compressed) air in the blasting head 1, is sprayed from the blasting head, which derives its force and speed from the pressure of the air, supplied from the air pump 8 through the air conduit 4 to the blasting head 1, when, in other words, the air pressure and speed are relatively high compared to the pressure and speed of the supplied blasting fluid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Abstract

La présente invention se rapporte à un système destiné à décaper des objets au moyen d'une tête de décapage (1) avec un agent de décapage (2), l'agent contenant un fluide de décapage comprenant un mélange d'un fluide de transport et d'un matériau abrasif. Le fluide de décapage est acheminé jusqu'à la tête de décapage par l'intermédiaire d'un premier conduit (3) relié à la tête de décapage et de l'air est acheminé par l'intermédiaire d'un second conduit (4). La tête de décapage est reliée par l'intermédiaire du premier conduit et du second conduit à une unité d'alimentation (6), commandée par un élément de commande (5) pour fluide et air respectivement. Le fluide de décapage et l'air se mélangent dans la tête de décapage à l'agent de décapage, qui, sous l'influence de la pression d'alimentation du fluide de décapage et/ou de l'air, est pulvérisé de force depuis la tête de décapage contre l'objet à décaper. L'invention se rapporte en outre à un commutateur (7), par exemple un veille automatique située sur la tête de décapage, le commutateur étant relié à l'élément de commande. Dans un premier état du commutateur, la pression d'alimentation du fluide de décapage et/ou de l'air a une valeur par laquelle l'agent de décapage est pulvérisé de force depuis la tête de décapage contre l'objet à décaper. Dans le second état du commutateur, la pression d'alimentation du fluide de décapage et/ou de l'air change de sorte que la force de la pulvérisation d'agent de décapage depuis la tête de décapage diminue. Cependant, l'application d'une telle commande par l'élément de commande permet d'éviter au premier conduit et/ou à la tête de décapage d'être bloqués ou obstrués par le dépôt du matériau abrasif dans le fluide de décapage.
PCT/NL2011/000036 2010-05-06 2011-05-03 Système de décapage d'objets à l'aide d'une tête de décapage et d'un agent de décapage WO2011139143A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11731138A EP2566659A1 (fr) 2010-05-06 2011-05-03 Système de décapage d'objets à l'aide d'une tête de décapage et d'un agent de décapage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NLNL1037942 2010-05-06
NL1037942A NL1037942C2 (nl) 2010-05-06 2010-05-06 Systeem voor het via een straalkop stralen van objecten met een straalmedium.

Publications (1)

Publication Number Publication Date
WO2011139143A1 true WO2011139143A1 (fr) 2011-11-10

Family

ID=43558282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2011/000036 WO2011139143A1 (fr) 2010-05-06 2011-05-03 Système de décapage d'objets à l'aide d'une tête de décapage et d'un agent de décapage

Country Status (3)

Country Link
EP (1) EP2566659A1 (fr)
NL (1) NL1037942C2 (fr)
WO (1) WO2011139143A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206481A1 (de) 2016-04-18 2017-10-19 Coperion Gmbh Zellenradschleuse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312040A (en) * 1992-11-13 1994-05-17 Aqua-Dyne, Inc. Non-clogging slurry nozzle apparatus and method
WO2004087378A1 (fr) * 2003-04-02 2004-10-14 Jetsis International Pte Ltd Commutation d'ecoulement fluide par deviation
US20050003747A1 (en) * 2001-11-22 2005-01-06 Dore David James Abrasive blasting apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5312040A (en) * 1992-11-13 1994-05-17 Aqua-Dyne, Inc. Non-clogging slurry nozzle apparatus and method
US20050003747A1 (en) * 2001-11-22 2005-01-06 Dore David James Abrasive blasting apparatus
WO2004087378A1 (fr) * 2003-04-02 2004-10-14 Jetsis International Pte Ltd Commutation d'ecoulement fluide par deviation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206481A1 (de) 2016-04-18 2017-10-19 Coperion Gmbh Zellenradschleuse
DE102016206481B4 (de) 2016-04-18 2019-06-27 Coperion Gmbh Zellenradschleuse

Also Published As

Publication number Publication date
EP2566659A1 (fr) 2013-03-13
NL1037942C2 (nl) 2011-11-08

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