Device And Method For Blasting A Suspension Onto Workpieces
a technology of suspension and workpiece, which is applied in the direction of metal-working equipment, abrasive machine equipment, manufacturing tools, etc., can solve the problems of virtually no effect on the surface of the workpiece, virtually no effect of wet blasting treatment on the workpiece surface, and extremely specific differences in weight between liquid phase and solid blasting agents
Inactive Publication Date: 2017-08-10
HUNZIKER WERNER
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Benefits of technology
The invention is a device for blasting suspensions that improves upon existing methods. The device includes a pressure vessel for a suspension and a prechamber for a suspension. The prechamber agitates the suspension in the pressure vessel, ensuring a uniform distribution of blasting agent. The device can also include a vacuum generating device to return the suspension to the prechamber. The device can be used in blasting cabins, and the suspension can be conveyed from a collection receptacle in the blasting cabin back into the pressure vessel without the need for pumps or agitators. The device eliminates the need for check valves and allows for a higher percentage of blasting agent in the suspension. The invention also includes a sealing element and a valve seat to prevent blasting agent grains from getting jammed in the process.
Problems solved by technology
Such a wet blasting treatment can have a grinding effect on the workpiece surface, for example, due to the abrasively acting blasting agent.
Very fine-grained, as a rule mineral, blasting agents, such as corundum, silicon carbide, glass powder, glass pearls, ceramic pearls, etc., can be used dry in blasting systems only to a very limited extent, because in addition to undesirably forming dust, they have virtually no effect on the surface of a workpiece to be machined.
One major challenge in systems or blasting devices that work with such suspensions involves the extremely specific differences in weight between the liquid phase and solid blasting agents in the suspension.
However, since such devices operate with rotating elements, there is a tendency for the blasting agent therein to nonetheless be deposited in the outer regions.
One requirement and concurrent difficulty has to do with the uniform distribution of the blasting agent in the liquid.
The blasting result on a workpiece will to a great extent be advantageously influenced by a uniform distribution, and disadvantageously influenced by a non-uniform distribution.
In order to be able to pump a suspension for a blasting process, there is also the difficulty that a centrifugal pump also acts as a centrifuge, for example, i.e., that it causes the heavier blasting agent to separate from the water, which is lighter by comparison.
The higher the blasting agent concentration, the more serious the separation effect as well.
Method used
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Embodiment Construction
[0048]Introduced with regard to FIG. 1 is a first preferred exemplary embodiment of a device 1 according to the invention. The device serves to blast suspension onto one or several workpieces, wherein the flowable suspension used for workpiece blast treatment is not also shown on FIG. 1. A workpiece 19 and its workpiece receptacle 18 are denoted by dashed lines, since they are not part of the device. The device 1 encompasses a pressure vessel 2 for holding suspension, and a feed line 3 connected to the pressure vessel 2, whose end remote from the pressure vessel 2 is connected to a blasting device 4, for example a blasting gun. Reference number 4′ denotes a nozzle holder, which on its part can be immovably fixed to a preferably adjustable bracket (not also shown). The feed line 3 encompasses a riser pipe 5 and a flexible tube 6, between which a valve 7 is switched (i.e., interposed). The housing of the pressure vessel 2 has a pressure-tight design. The riser pipe 5 extends from the ...
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A device for irradiating a suspension on workpieces, the device including at least one pressure vessel for the suspension; at least one feed line for the suspension connected to the pressure vessel, the feed line is connected or can be connected to a radiation device; at least one valveswitched between the pressure vessel and the radiation device; at least one prechamber connected to the pressure vessel by a valve; at least one return line for the suspension, connected to the prechamber; and a line and a valve, by which the prechamber can be connected to a compressed air source or by which the prechamber is connected to a compressed air source. The valve between the prechamber and the pressure vessel is a check valve connected at its one upper, connection at a pressure vessel connection, which discharges into the pressure vessel through the bottom of the pressure vessel at the lowest point thereof, and which is connected at its other connection to the prechamber, wherein the flow direction of the check valve is directed toward the pressure vessel.
Description
FIELD OF THE INVENTION[0001]The present invention relates to a device, in particular for blasting a suspension onto one or more workpieces, wherein the device encompasses: At least one pressure vessel for the suspension, at least one feed line for the suspension connected to the pressure vessel at its one end, the other end of which is or can be connected to a blasting device, which can preferably be a blasting gun, at least one valve that is switched between the pressure vessel and blasting device, at least one prechamber for the suspension, which is connected to the pressure vessel with at least one valve interposed, at least one return line for the suspension, which is connected to the prechamber, preferably with a valve interposed, and a line and a valve, with which the prechamber is or can be connected to a compressed air source separate from the device, or with which the prechamber is connected to a compressed air source belonging to the device.BACKGROUND OF THE INVENTION[0002...
Claims
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Login to View More IPC IPC(8): B24C7/00B24C9/00
CPCB24C9/003B24C7/0007
InventorHUNZIKER, WERNERSCHOLZ, JURGGIGER, REMO
OwnerHUNZIKER WERNER