WO2016073352A1 - Control of wet abrasive blasters - Google Patents
Control of wet abrasive blasters Download PDFInfo
- Publication number
- WO2016073352A1 WO2016073352A1 PCT/US2015/058611 US2015058611W WO2016073352A1 WO 2016073352 A1 WO2016073352 A1 WO 2016073352A1 US 2015058611 W US2015058611 W US 2015058611W WO 2016073352 A1 WO2016073352 A1 WO 2016073352A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- water
- pressure
- psi
- pump
- abrasive
- Prior art date
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
- B24C7/0038—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
- B24C7/0007—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
Definitions
- Wet abrasive blasting systems are typically used in situations requiring blasting operations that do not tolerate dry sand blasting conditions due to environmental or other factors. Wet abrasive blasting systems are used to control generation of dust and at the same time ensure that there is minimal damage to the substrate. Wet abrasive blasting systems use a method to force the slurry of abrasive media into a compressed air stream under controlled conditions. A blast pot or pressure vessel is charged with water from an exterior water supply together with a solid abrasive to form a water abrasive slurry.
- the blast pot Once the blast pot is closed and purged of all air, it is fed with pressurized water normally from a water pump, and this pressurized water forces the slurry out of the blast pot, into a piping system, and finally into the mixing point where the wet slurry is mixed with compressed air.
- Fluctuations in the water supply to the wet abrasive blasting equipment cause instability in the entire system and provide for inconsistent behaviour of the wet abrasive blasting system, which ultimately can lead to an uncontrollable or inefficient blasting process. It has been found that the water supply can vary in pressure from lpsi to over 200psi depending upon the water supply source. In practice wide fluctuations in the pressure of the water supply cannot be tolerated by the wet abrasive blasting systems and therefore it is not possible to use some sources of water supply.
- An incoming water control for use in a wet abrasive blasting system includes an incoming water supply with a pressure of between 1 psi and 200 psi, a pressure reducing valve for reducing the pressure of the incoming water supply, and an air over water pneumatic piston style water pump that incorporates check (or one-way flow) valves.
- the pump receives water having a water pressure of less than 20 psi from the pressure reducing valve and the pump delivers water to a blast pot pressure vessel of the wet abrasive blasting system to pressurize the blast pot pressure vessel filled with water and abrasive.
- Figure 1 is a schematic of a prior art wet abrasive blasting system.
- Figure 2 is a schematic of a currently developed wet abrasive blasting system.
- FIG. 1 is a prior art depiction of a typically used wet abrasive blasting system shown generally as 100.
- System 100 includes the following major components, namely blast pot 102 (which includes pressure vessel 104), blast pot water inlet 114, fill inlet 116, pop up valve 118.
- Pressure vessel 104 is filled with water abrasive mixture 120.
- Blast pot 102 is normally fed with pressurized water from water pump 106, which receives water from an exterior water supply 108.
- Water pump 106 includes pump water inlet 110 and pump water outlet 112.
- Water abrasive mixture 120 flows from pressure vessel 104 through transfer hose 122, ball valve 124, and a pinch hose 128, which is controlled by pinch valve 126, to mixing point 132 at T connector 130.
- Air supply 134 delivers compressed air, which enters through air valve 136 and check valve 138. The compressed air mixes with the water abrasive mixture 120 at mixing point 132 to form an air water abrasive blast mixture 142, which flows out through blast nozzle 140.
- water supply 108 normally is a static water holding tank which supplies water to pump water inlet 110 under gravity feed.
- the pressure supplied by water supply 108 (a static water holding tank) will simply be the static head of the water above pump water inlet 110, which normally is somewhere between 1 to 10 psi.
- Water pump 106 is a pneumatic air over water pump which uses a piston to drive a water piston pump on the lower end to increase the pressure from the pump water inlet 110 to the pump water outlet 112.
- the type of water pump 106 normally employed includes inlet and outlet check valves (or one-way flow valves) which open and close depending upon the stroke of the piston within the cylinder of water pump 106.
- the pressure created by the downward stroke of piston water pump 106 closes the inlet check valve and therefore closes off pump water inlet 110 in order to pressurize the water within water pump 106 and forcibly pump water out of water outlet 112.
- a static holding water tank which is fed by an exterior supply.
- the exterior water supply may be city water, pumped water or other sources of water under more than 20 psi of pressure.
- the use of a static holding tank can be cumbersome and also lead to further issues in regard to the control of the water level within the static tank, requiring level control shut off valves for the incoming water supply.
- Incoming water supply pressures range anywhere from lpsi to 200psi depending upon the source— whether it be a static water head, whether it be city water or whether it be an external independent water pumping system.
- FIG. 2 shows wet abrasive blasting system 200, which includes all of the components previously shown in Figure 1 in addition to the following components: namely, pressure reducing valve 202, water filter 204, pressure gauge 206, and incoming water supply 208.
- Water abrasive blasting system 200 can accept any water supply 208 at incoming pressure between 0 and 200 psi and be able to regulate and maintain this water pressure to below 20 psi (and preferably between 10 and 15 psi). This regulation of water pressure provides smooth operation of water pump 106, and prevents inlet check (or one-way flow) valve slamming and the resulting pressure spikes.
- Water supply 208 may be any water supply including a static head. It may be city water at approximately 50 to 80 psi, or it may be an independent water pump which may deliver water with pressure as high as 200 psi. Water supply 208 flows past pressure gauge 206 and water filter 204, and then through a pressure reducing valve 202 in order to reduce the incoming pressure to below 20 psi (and preferably to somewhere between 10 to 15 psi) regardless of the water supply pressure 208 in order to provide smooth operation of the water pump.
- Water pump 106 preferably is a low pressure transfer pump, which is a pneumatic overwater piston style water pump which includes inlet and outlet ball valves.
- a pneumatic overwater piston style water pump which includes inlet and outlet ball valves.
- the pressure seen at the pump water inlet 110 be less than 20 psi (and preferably between 10 and 15 psi).
- Pressure reducing valve 202 preferably be water pressure valve, which is a diaphragm style pressure reducing valve able to handle water pressures between 0 and 200 psi and reduce the outgoing water pressure to below 20psi, and preferably between 10 to 15 psi.
- any incoming water supply 208 can be utilized, such as static pressure water head which normally runs between 1 and lOpsi, a city water supply which normally runs between 50 and 80psi, and/or an independent water pump water supply which can run as high as 200 psi.
- the incoming water pressure seen at pump water inlet 110 can be reduced to below 20 psi (and preferably controlled between 10 and 15 psi) to ensure smooth operation of water pump 106 and the elimination of water spikes due to slamming of inlet and outlet valves within water pump 106.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Reciprocating Pumps (AREA)
- Nozzles (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/524,510 US10245702B2 (en) | 2014-11-06 | 2015-11-02 | Control of wet abrasive blasters |
CA2960403A CA2960403A1 (en) | 2014-11-06 | 2015-11-02 | Control of wet abrasive blasters |
EP15857462.4A EP3215314A4 (en) | 2014-11-06 | 2015-11-02 | Control of wet abrasive blasters |
AU2015343392A AU2015343392A1 (en) | 2014-11-06 | 2015-11-02 | Control of wet abrasive blasters |
CN201580049939.XA CN107018653B (en) | 2014-11-06 | 2015-11-02 | Controller of wet grinding material ejector |
BR112017007722A BR112017007722A2 (en) | 2014-11-06 | 2015-11-02 | inlet water control, and wet abrasive blasting system. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462076054P | 2014-11-06 | 2014-11-06 | |
US62/076,054 | 2014-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016073352A1 true WO2016073352A1 (en) | 2016-05-12 |
Family
ID=55909662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2015/058611 WO2016073352A1 (en) | 2014-11-06 | 2015-11-02 | Control of wet abrasive blasters |
Country Status (7)
Country | Link |
---|---|
US (1) | US10245702B2 (en) |
EP (1) | EP3215314A4 (en) |
CN (1) | CN107018653B (en) |
AU (1) | AU2015343392A1 (en) |
BR (1) | BR112017007722A2 (en) |
CA (1) | CA2960403A1 (en) |
WO (1) | WO2016073352A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3366420A1 (en) * | 2017-02-27 | 2018-08-29 | BFT GmbH | Dosing device for abrasive agent in water jet cutting installations |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10076823B2 (en) * | 2010-07-13 | 2018-09-18 | Graco Minnesota Inc. | Wet abrasive blasting system and method |
CN108568756A (en) * | 2018-05-09 | 2018-09-25 | 中船澄西船舶修造有限公司 | A kind of anticlogging water mist abrasive material mixed cylinder |
CN108857924A (en) * | 2018-05-09 | 2018-11-23 | 中船澄西船舶修造有限公司 | A kind of rack platform of water mist blasting by abrasives machine |
CN108747848B (en) * | 2018-05-09 | 2024-02-06 | 中船澄西船舶修造有限公司 | Control system of double-gun water mist sand blasting machine |
US11590631B2 (en) * | 2019-08-14 | 2023-02-28 | Clean Blast Systems, LLC | Wet abrasive blast machine with remote control rinse cycle |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5201150A (en) * | 1990-07-24 | 1993-04-13 | Fuji Seiki Machine Works, Limited | Wet abrasive blasting apparatus using pressurized slurry |
US5484325A (en) * | 1993-10-07 | 1996-01-16 | Church & Dwight Co., Inc. | Blast nozzle containing water atomizer for dust control |
WO2000051787A1 (en) * | 1999-03-04 | 2000-09-08 | Gagemark Limited | Abrasive blasting apparatus |
US6224463B1 (en) * | 1998-11-02 | 2001-05-01 | J.C.J. Metal Processing, Incorporated | Workpiece finishing system and method of operating same |
US20120015592A1 (en) * | 2010-07-13 | 2012-01-19 | Keith Eliason | Wet Abrasive Blasting System and Method |
Family Cites Families (11)
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GB902668A (en) * | 1959-11-23 | 1962-08-09 | Hydraulectric Eniterprises Ltd | Pumping apparatus |
DE3239429A1 (en) * | 1982-10-25 | 1984-04-26 | Keizers, geb. Kalle, Sigrid, 4280 Borken | METHOD AND DEVICE FOR OPERATING A HIGH-PRESSURE HEATER |
US5230185A (en) * | 1990-04-06 | 1993-07-27 | Church & Dwight Co., Inc. | Blasting apparatus and method |
ES2065107T3 (en) * | 1991-05-23 | 1995-02-01 | Pro Aqua Geraete Gmbh | WATER / SAND DISPENSER. |
EP0708699A1 (en) * | 1994-02-21 | 1996-05-01 | Waterkracht B.V. | Blasting device with adjustable blast strength |
US5407379A (en) * | 1994-04-18 | 1995-04-18 | Church & Dwight Co., Inc. | Differential pressure metering and dispensing system for abrasive media |
GB2382317B (en) * | 2001-11-22 | 2004-05-12 | Quill Internat Ind Plc | Abrasive blasting apparatus |
DE202005009318U1 (en) * | 2005-06-14 | 2005-08-25 | Richter Spielgeräte GmbH | Hand-operated piston suction pump e.g. for groundwater extraction has fluid-containing device with valves in pump foot |
CN201186411Y (en) * | 2008-04-24 | 2009-01-28 | 公安部上海消防研究所 | Radio control device of hand-hold front mixing abrasive water jet equipment |
CN102166733B (en) * | 2011-01-06 | 2013-02-06 | 徐州中矿永宏科技有限公司 | Portable abrasive water jet cutting machine used in coal mine |
CN202129728U (en) * | 2011-06-09 | 2012-02-01 | 广东工业大学 | Micro-abrasive water jet fine machining device |
-
2015
- 2015-11-02 BR BR112017007722A patent/BR112017007722A2/en not_active Application Discontinuation
- 2015-11-02 WO PCT/US2015/058611 patent/WO2016073352A1/en active Application Filing
- 2015-11-02 CA CA2960403A patent/CA2960403A1/en not_active Abandoned
- 2015-11-02 EP EP15857462.4A patent/EP3215314A4/en not_active Withdrawn
- 2015-11-02 US US15/524,510 patent/US10245702B2/en active Active
- 2015-11-02 CN CN201580049939.XA patent/CN107018653B/en not_active Expired - Fee Related
- 2015-11-02 AU AU2015343392A patent/AU2015343392A1/en not_active Abandoned
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5201150A (en) * | 1990-07-24 | 1993-04-13 | Fuji Seiki Machine Works, Limited | Wet abrasive blasting apparatus using pressurized slurry |
US5484325A (en) * | 1993-10-07 | 1996-01-16 | Church & Dwight Co., Inc. | Blast nozzle containing water atomizer for dust control |
US6224463B1 (en) * | 1998-11-02 | 2001-05-01 | J.C.J. Metal Processing, Incorporated | Workpiece finishing system and method of operating same |
WO2000051787A1 (en) * | 1999-03-04 | 2000-09-08 | Gagemark Limited | Abrasive blasting apparatus |
US20120015592A1 (en) * | 2010-07-13 | 2012-01-19 | Keith Eliason | Wet Abrasive Blasting System and Method |
Non-Patent Citations (1)
Title |
---|
See also references of EP3215314A4 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3366420A1 (en) * | 2017-02-27 | 2018-08-29 | BFT GmbH | Dosing device for abrasive agent in water jet cutting installations |
AT519719A1 (en) * | 2017-02-27 | 2018-09-15 | Bft Gmbh | Dosing device for abrasive in water jet cutting systems |
AT519719B1 (en) * | 2017-02-27 | 2019-01-15 | Bft Gmbh | Dosing device for abrasive in water jet cutting systems |
Also Published As
Publication number | Publication date |
---|---|
AU2015343392A1 (en) | 2017-04-06 |
BR112017007722A2 (en) | 2017-12-19 |
CA2960403A1 (en) | 2016-05-12 |
CN107018653A (en) | 2017-08-04 |
US10245702B2 (en) | 2019-04-02 |
EP3215314A4 (en) | 2018-05-30 |
US20180021923A1 (en) | 2018-01-25 |
CN107018653B (en) | 2019-12-10 |
EP3215314A1 (en) | 2017-09-13 |
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