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Controller for Wet Abrasive Ejectors

A controller and wet grinding technology, applied in the direction of abrasive feeding device, abrasive, pump control, etc., can solve the problem of wide pressure fluctuation of water supply device and cannot use water supply source, etc.

Inactive Publication Date: 2019-12-10
GRACO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, the wide pressure fluctuations of the water supply cannot be tolerated by wet abrasive injection systems and therefore some water supplies cannot be used

Method used

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  • Controller for Wet Abrasive Ejectors
  • Controller for Wet Abrasive Ejectors

Examples

Experimental program
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Effect test

Embodiment Construction

[0005] figure 1 is a prior art view of a commonly used wet abrasive blasting system, shown generally at 100 . System 100 includes the following main components, namely spray tank 102 (including pressure vessel 104 ), spray tank water inlet 114 , fill inlet 116 , pop up valve 118 . Pressure vessel 104 is filled with aqueous abrasive mixture 120 .

[0006] The spray tank 102 is typically fed with pressurized water from a water pump 106 which receives water from an external water supply 108 . Water pump 106 includes a water pump inlet 110 and a water pump outlet 112 . Water abrasive mixture 120 flows from pressure vessel 104 to mixing point 132 at T-connector 130 through transfer hose 122 , ball valve 124 and squeeze hose 128 , which is controlled by squeeze valve 126 . Air source 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 air-water-abrasive jet ...

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PUM

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Abstract

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 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.

Description

Background technique [0001] Wet abrasive blasting systems are typically used in situations requiring blasting operations that, due to environmental or other factors, do not tolerate dry abrasive blasting conditions. A wet abrasive blasting system is used to control dust generation while ensuring minimal damage to the substrate. Wet abrasive injection systems use methods to propel a slurry of abrasive media into a compressed air stream under controlled conditions. A spray tank or pressure vessel is filled with water from an external water supply along with solid abrasive to form a water abrasive slurry. Once the spray tank is closed and purged of all air, the spray tank is fed pressurized water, usually from a water pump, and this pressurized water pushes the slurry out of the spray tank, into the piping system, and finally into the mixing point, wet The slurry is mixed with compressed air at the mixing point. Fluctuations in the water supply to the wet abrasive blasting equ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24C7/00
CPCB24C7/0023B24C7/0038F04B49/225
Inventor 约翰·麦金太尔
Owner GRACO INC