CONTROL OF PARTICLE SUPPLY OF BLASTING APPARATUS
First Claim
1. A method of adjusting or operating a particle-metering system for an abrasive-blasting apparatus having a feed orifice of variable flow cross section through which abrasive particles pass from a supply of the particles to an outlet, the method comprising the steps of:
- measuring abrasive throughput through the feed orifice by a downstream flow sensor generating a flow-sensor signal;
using the flow-sensor signal to control a manipulated variable for an output setting of the feed orifice;
in order to adjust the feed assembly for at least one manipulated variable, determining the actual throughput through the feed orifice by measuring a weight of the outputted blasting abrasive within a defined time period;
storing the manipulated variable, the actual throughput, and the corresponding flow-sensor signal in an allocation table; and
using relationships between the actual throughput, the manipulated variable, and the flow-sensor signal during subsequent operation.
1 Assignment
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Accused Products
Abstract
The invention relates to a method for adjusting or operating a particle-metering system for a particle blasting installation, in particular a blasting installation for the working of surfaces, the abrasive throughput of which is preset by means of a passing-through opening that can be varied on the basis of time and/or variables and is determined by means of a downstream throughput sensor as a throughput sensor signal (DS), wherein the throughput sensor signal (DS) is used for controlling a manipulated variable (SG) for the degree of setting of the passing-through opening, wherein to adjust the metering system for at least one value of the manipulated variable (SG) the actual throughput (D) through the passing-through opening is determined by means of a measurement of the weight of abrasive material (M) allowed through within a defined time period (Dt), and the manipulated variable (SG), the actual throughput (D) and the corresponding throughput sensor signal (DS) are stored in an assignment table, wherein the relations between the actual throughput (D), the manipulated variable (SG) and the throughput sensor signal (DS) are used during subsequent operation.
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Citations
21 Claims
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1. A method of adjusting or operating a particle-metering system for an abrasive-blasting apparatus having a feed orifice of variable flow cross section through which abrasive particles pass from a supply of the particles to an outlet, the method comprising the steps of:
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measuring abrasive throughput through the feed orifice by a downstream flow sensor generating a flow-sensor signal; using the flow-sensor signal to control a manipulated variable for an output setting of the feed orifice; in order to adjust the feed assembly for at least one manipulated variable, determining the actual throughput through the feed orifice by measuring a weight of the outputted blasting abrasive within a defined time period; storing the manipulated variable, the actual throughput, and the corresponding flow-sensor signal in an allocation table; and using relationships between the actual throughput, the manipulated variable, and the flow-sensor signal during subsequent operation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An abrasive-blasting apparatus for treating a surface the apparatus comprising:
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a supply vessel filled with blasting abrasive an outlet directable at the surface; a feed assembly between the vessel and the outlet and having a feed orifice of variable flow cross section; a downstream flow sensor; a weight detector that determines the weight of the blasting abrasive that passes through the feed assembly into a collecting vessel and generates; a processor that regulates the adjustable feed orifice in accordance with an output of the flow sensor and of the weight detector. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification