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
  • B24C7/0038—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
  • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
  • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B24—GRINDING; POLISHING
  • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
  • B24C5/00—Devices or accessories for generating abrasive blasts
  • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
  • B24C5/04—Nozzles therefor
• • 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
• • 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 invention relates to a method for sandblasting with damp sand and a damp sandblasting device for
• a method of the type mentioned is e.g. B. known from German Patent 535,287 or US Pat. No. 3,514,905.
• a disadvantage of these methods and the corresponding devices, which for those skilled in the art naturally also have input means for the sand to be blasted, is that they are too small
• the supply hose to the actual jet nozzle can only have a limited length and that the nozzles for introducing the pressurized water into the pressure vessel can also be easily added during its filling.
• the wet sandblasting device according to the invention is simply constructed and should be reliable and easy to regulate.
• Compressed air is advantageously used as the blowing agent, alternatively, however, pressurized water can also be used as the Z propellant for blasting, in particular under water.
• pressurized water can also be used as the Z propellant for blasting, in particular under water.
• ⁇ n another embodiment of the invention is advantageously medium flow for setting a uniform blasting vessel by a water jet in the Druck ⁇ a water-sand fluidized bed produced, and the promotion of the pressurized water-sand mixture vorteil ⁇ can by way of this governed by the outlet from the pressure vessel Additional pressurized water can be supplied.
• the damp sand blasting device is advantageously characterized in that there is a blasting nozzle for the damp sand connected to the pressure container via a hose, the blasting nozzle with an additional propellant line
• OMP is connected and has a drive nozzle in which the hose for the water-sand mixture opens.
• the damp sandblasting device is advantageously designed such that it has a nozzle for introducing pressurized water, a means for low continuous introduction of pressurized water during filling and for the strong introduction of pressurized water during sandblasting, above a bottom outlet of the pressure vessel as well as means for the controlled introduction of additional pressurized water into the beginning of the hose for the water-sand mixture.
• the blasting nozzle advantageously has the inlet for the sand-water mixture behind the blowing nozzle, through which the additional blowing agent flows, and there is an opening for sandblasting under water
• Blowing agent available from which it can flow in the opposite direction to the blasting agent outlet.
• FIG. 1 schematically, in partial section, the pressure vessel for the sand-pressure water mixture
• Figure 2 shows schematically in section the jet nozzle with the additional propellant supply
• Figure 3 shows the driving nozzle according to Figure 2 for underwater blasting.
• the device according to the invention consists of a pressure vessel 1, on which sieves for O 84/01738
• the pressure vessel 1 has lines for supplying pressurized water, with a nozzle 8 with directed water outlet in the vicinity of the outlet opening 7 for the water-sand mixture ensuring that a fluidized bed is set up, so that a smooth and smooth outflow of the Water-sand mixture from the lower area of the container 1 is set.
• the hose 2 is provided for the outflow of the water-sand mixture and there are means 10 for introducing additional water into the beginning of the hose 2, which, depending on the hose length and back pressure, promote the water-sand mixture strengthen or support.
• the water-sand mixture is conveyed to a blasting nozzle 3, in which compressed air is supplied via an additional propellant line or, when blasting under water, also pressurized water as a propellant for the propelling nozzle 5.
• This additional propellant ensures that, despite relatively low pressurized water consumption, a superior blasting effect can be achieved with the lowest abrasive consumption.
• a Laval or expansion nozzle can be placed behind the actual driving nozzle 5, as shown in FIG. 2, which opens into a funnel 11.
• the wet sand blasting device now works automatically after filling with sand and pressurized water as a function of the actuation of the handle 12, additional water being input into the beginning of the hose 2 via a remote-controlled valve 13.
• the amount of this make-up water can be controlled by means 10, which consists of a series of valves and overflow lines.
• the damp-sand blasting pressure vessel according to the invention is protected by a reducing valve 14 and a pressure safety valve 15, so that only the desired pressure is generated within the vessel and this automatically diminishes when excess pressure occurs.
• a check valve 16 and a filter 17 ensure that no backwashing with contaminants into the pressurized water line takes place from the pressurized container, which could clog the reducing valve 14.
• the wet sand blasting device according to the invention can be used universally, is simple in construction and works safely and it can therefore be said that the problems at hand are ideally solved. ⁇ "

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
• Cleaning In General (AREA)
• Nozzles (AREA)
• Application Of Or Painting With Fluid Materials (AREA)
• Crushing And Pulverization Processes (AREA)
• Fish Paste Products (AREA)
• Jet Pumps And Other Pumps (AREA)
• Paper (AREA)
• Disintegrating Or Milling (AREA)

Priority Applications (4)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6176526

Family Applications (1)

Country Status (12)

Cited By (3)

Families Citing this family (7)

Citations (6)

Family Cites Families (9)

• 1982
  • 1982-10-25 DE DE19823239429 patent/DE3239429A1/de not_active Ceased
• 1983
  • 1983-10-19 GR GR72744A patent/GR79647B/el unknown
  • 1983-10-20 ZA ZA837813A patent/ZA837813B/xx unknown
  • 1983-10-21 JP JP83503387A patent/JPS59502138A/ja active Pending
  • 1983-10-21 AU AU21233/83A patent/AU578233B2/en not_active Expired
  • 1983-10-21 EP EP83903384A patent/EP0122928B1/de not_active Expired
  • 1983-10-21 WO PCT/EP1983/000273 patent/WO1984001738A1/de not_active Application Discontinuation
  • 1983-10-21 AT AT83903384T patent/ATE39640T1/de not_active IP Right Cessation
  • 1983-10-21 DE DE8383903384T patent/DE3378819D1/de not_active Expired
  • 1983-10-21 BR BR8307590A patent/BR8307590A/pt unknown
  • 1983-10-24 KR KR1019830005020A patent/KR840006458A/ko not_active Ceased
  • 1983-10-25 CA CA000439658A patent/CA1260714A/en not_active Expired
  • 1983-10-25 MX MX199212A patent/MX157294A/es unknown

Patent Citations (6)

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