WO2011139143A1 - System for blasting objects with a blasting head and blasting medium - Google Patents

System for blasting objects with a blasting head and blasting medium Download PDF

Info

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
French (fr)
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/en
Publication of WO2011139143A1 publication Critical patent/WO2011139143A1/en

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

System for blasting objects by means of a blasting head (1) with a blasting medium (2), the medium contains a blasting fluid comprising a mixture of a transport fluid and an abrasive material. The blasting fluid is supplied to the blasting head through a first conduit (3) connected to the blasting head and air through a second conduit (4). The blasting head is connected through the first conduit and the second conduit to a supply unit (6), controlled by a control element (5) for fluid and air respectively. The blasting fluid and air are combined in the blasting head into the blasting medium, which, under the influence of the supply pressure of the blasting fluid and/or the air, forcibly is sprayed from the blasting head against the object to be blasted. Further is provided a switch (7), for example a dead man's handle on the blasting head, the switch being connected to the control element. 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. In the second state of the switch the supply pressure of the blasting fluid and/or the air is changed such that the force of the blasting medium spraying from the blasting head is decreased, however, by applying such control by the control element 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.

Description

SYSTEM FOR BLASTING OBJECTS WITH A BLASTING HEAD AND BLASTING MEDIUM
DESCRIPTION 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. In particular, 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.
Due to safety regulations, etc., it is important that, for example in case of emergency, the installation, in particular parts in the vicinity of operating staff, can be quickly shut down. A particular problem to be solved is that constantly, during shutting down the installation, so even in case of emergency etc., the installation must be prevented from clogging by the abrasive material (usually not soluble) that as a result of stopping the blasting fluid flow, then may settle within installation components and no longer or only with great difficulty can be brought back into operation. 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.
In order to provide for a solution to the problems raised, according to the present invention, during operation preferably 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
- in the second state of the switch 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.
Several optional preferred embodiments are provided enabling that normal operation of the plant can be quickly stopped or paused in case of an emergency, by which disabling is preventing of the plant by sedimentation of the abrasive material. In all cases it is provided that on the one hand the pressure by which -by the pressure of the air supplied respectively the pressure of the blasting fluid- the blasting medium is pressed out of the blasting head, is rapidly reduced while on the other hand a fluid flow takes care for the abrasive material, either by washing away (option I) or by keeping the blasting fluid in flowing motion, as a result of which it doesn't settle (options 2.3 and 4).
Hereinafter four optional preferred embodiments are discussed by means of four figures.
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. During operation 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. There is also 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. Once the dead man's handle is released, by which the switch will go to the second state, 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.
Figure 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. In the first state of the switch 7, 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. In the second state of the switch 7, 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. By means of by the control element 5 controlling the control valves or valves 11, 12 and 13, for example electromagnetically or by servomotor operated, 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. Optionally, 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. This option, closing or reducing the (delivery) air supply by controlling the air valve 11 by the control element 5 in the second state of the switch 7, also applies to the following embodiments. Figures 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. In the second state of the switch 7, 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. In this variant, 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. Figure 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. 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. In the second state of the switch 7, the supply unit 6 is controlled by the control element 5 such, that the blasting unit valve 13 is closed. In this case, 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. However, 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.
Figure 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. In the first condition of the switch 7, 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. In the second state of the switch 7, 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. After reaching the second state of the switch 7, when the air pressure is removed because the control element 5 closes the air valve 11, the pressure and speed of the blasting medium 1 will substantial fall back (because only maintained by the pressure of the blasting fluid pump 10), however to a level at which the abrasive material in the blasting fluid in the first conduit 3 and/or the blasting head 1 are substantially kept in motion. In all cases the pressure and speed of spraying from the blasting head 1 will substantially reduce when the switch 7 of the "dead man's handle" has reached his second state, however, either the abrasive material from the blasting fluid conduit 3 and the blasting head 1 is flushed (Figure 1) or either a reduced blasting fluid flow is maintained so that the abrasive material is kept in motion and does not settle (Figures 2 to 4). In all these cases the blasting may be quickly interrupted, but is prevented that the abrasive material settles, so that blasting then again can be continued without any problems (switch 7 is then returned to its first state by pressing the "dead man's handle").

Claims

System for blasting objects, via a blasting head (1), with a blasting medium (2) containing 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 air or any other gas or gas mixture, hereinafter called compressed air, is supplied to the blasting head through a second conduit (4) in order to be combined there with the blasting fluid supplied to the blasting head, to the aforementioned blasting medium, which, under the influence of the supply pressure and/or the air, is forcibly sprayed from the blasting head against the object to be blasted, wherein, during operation, the blasting head is connected, through the first conduit and the second conduit, to a supply unit (6), controlled by a control element (5) for fluid and air respectively, and wherein a switch (7) is provided, 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
- in the second state of the switch 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 it is prevented that in particular the first conduit and/or the blasting head are blocked or obstructed by settlement of the abrasive material in the blasting fluid.
System according to claim 1, wherein the blasting head and the first and second conduit are arranged for manual blasting of objects by a person operating the blasting head.
System according to one of the preceding claims, wherein the supply unit is suitable, under the control of the control element, to supply the blasting head through the first conduit, with either blasting fluid, or washing fluid, in particular rinsing water, and wherein - in the first state of the switch the supply unit is controlled by the control element such, that the supply unit supplies the blasting fluid to the first conduit, and
- in the second state of the switch the supply unit is controlled by the control element such, that the supply unit stops or reduces the supply of the blasting fluid to the first conduit, and, at least partially, substitutes by supply of washing fluid to the first conduit, such that the abrasive material of the blasting fluid is washed away by the washing fluid.
System according to one of the preceding claims, wherein
- in the first state of the switch the supply unit is controlled by the control element such, that the supply unit supplies the blasting fluid to the first conduit under normal operational pressure and speed, and
- in the second state of the switch the supply unit is controlled by the control element such, that the supply unit reduces the supply pressure and/or speed of the blasting fluid to the first conduit, such that the abrasive material in the blasting fluid in the first conduit and/or the blasting head substantially is kept in motion.
System according to claim 4, wherein the supply unit comprises a fluid valve controlled by the control element, wherein a bypass is provided having a reduced passage width with respect to the passage width of the blasting fluid valve in its open state, wherein
- in the first state of the switch the supply unit is controlled by the control element such, that the blasting fluid valve is opened, and
- in the second state of the switch the supply unit is controlled by the control element such that the blasting fluid valve is closed.
System according to claim 4, wherein the supply unit comprises or is connected to a variable power and/or speed blasting fluid pump controllable by the control element, wherein
- in the first condition of the switch, the blasting fluid pump is controlled by the control element such, that the pump capacity is sufficient for normal blasting operation, and
in the second state of the switch, the blasting fluid pump is controlled by the control element such, that the pump power is reduced to a level which keeps the abrasive material in the blasting fluid in the first conduit and/or the blasting head substantially in motion.
7. System according to one of the preceding claims, wherein in the second state of the switch the supply unit also stops or reduces the air supply.
PCT/NL2011/000036 2010-05-06 2011-05-03 System for blasting objects with a blasting head and blasting medium WO2011139143A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11731138A EP2566659A1 (en) 2010-05-06 2011-05-03 System for blasting objects with a blasting head and blasting medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NLNL1037942 2010-05-06
NL1037942A NL1037942C2 (en) 2010-05-06 2010-05-06 SYSTEM FOR VIA A BEAM-RADIATING BEAMS WITH A BEAM-MAKING MEDIUM.

Publications (1)

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

Family

ID=43558282

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2011/000036 WO2011139143A1 (en) 2010-05-06 2011-05-03 System for blasting objects with a blasting head and blasting medium

Country Status (3)

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

Cited By (1)

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

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 (en) * 2003-04-02 2004-10-14 Jetsis International Pte Ltd Switching fluid flow by diversion
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 (en) * 2003-04-02 2004-10-14 Jetsis International Pte Ltd Switching fluid flow by diversion

Cited By (2)

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

Also Published As

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

Similar Documents

Publication Publication Date Title
US11548116B2 (en) Apparatus configured to provide both wet and dry blasting and method for operating such an apparatus
US10537979B2 (en) Mobile wet abrasive blasting system utilizing automated valves to simplify setup and operational functions
JP5235812B2 (en) High pressure washing car
CN110709209B (en) Water abrasive suspension cutting equipment and water abrasive suspension cutting method
CN102828460A (en) High and low pressure integrated water sprinkler system and engineering machine
CN107847985B (en) Water vapor sand blasting system with fixed tank pressure
CN110753602A (en) Sand blasting system
JP2020516467A (en) Water Abrasive Suspension Jet Cutting Device
WO2011139143A1 (en) System for blasting objects with a blasting head and blasting medium
JP2006521938A (en) Apparatus and method for switching fluid flow by direction control
KR20150004555A (en) High pressure washing apparatus with detergent injection
KR20110101449A (en) Equipped with anti-clogging of the spray nozzle injection system
US20140102566A1 (en) System and methods to control a process
JP4412571B2 (en) Cleaning and peeling device
EP3300836A1 (en) Apparatus for spraying an abrasive mixture towards a delicate surface for removing writings, drawings or graffiti therefrom
KR101645580B1 (en) Abrasive storage and feeding system for waterjet cutting
JP2008008065A (en) High-pressure washing vehicle
US9962810B2 (en) Dual control dead man system
JP5739851B2 (en) Paint collection device for painting system
JP4757211B2 (en) High pressure washing vehicle and air flow path switching method for high pressure washing vehicle
KR20130094624A (en) Apparatus for washing and drying a machine parts and method for controlling the same
JPH07121509B2 (en) Sandblasting equipment
KR200483353Y1 (en) Anti Pharmaceutical Unmanned Sprayer
JP2022038789A (en) Water jetting device
TR2021020451Y (en) INNOVATION IN SANDBLASTING MACHINE

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11731138

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2011731138

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2011731138

Country of ref document: EP