Sampling system for grinding mills
First Claim
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1. A system for obtaining a sample of particulate material from a batch-type grinding mill, said material being processed in the mill under seal to the atmosphere, without disturbing the seal, said system comprising:
- I. a hollow rotatably mounted shell, said shell having a peripheral wall, means for rotating the shell and grinding media within the shell;
II. at least one sampling orifice located in the peripheral wall of the shell for outward discharge from the shell of material processed in the shell, each said orifice being sealable to the atmosphere; and
III. at least one sampling assembly for receipt of the sample from the shell, each said sampling assembly comprising;
(A) a sampling chamber sealably secured on the shell over one of said sampling orifices in the shell, said chamber having an inner wall forming a longitudinal channel with ports at either end, one port being aligned with said one sampling orifice in the shell;
(B) a removable hollow sampling member sealably insertable and retainable in the sampling chamber and comprising a tubular portion at one end of the sampling member for insertion into the sampling chamber and a sealable collection chamber at the opposite end, the tubular portion having a port of entry for the sample, means for sealing the collection chamber, both with respect to the rest of the interior of the sampling member and with respect to the atmosphere;
(C) grinding media blocking means to prevent the grinding media from outward passage from the shell into the sampling member;
(D) removable blocking means for preventing, in the absence of the removable sampling member, the outward passage of material from the shell through the central channel of the sampling chamber;
(E) combination valve and sealing means between the sampling chamber and blocking means or between the sampling chamber and sampling member for maintaining the removable blocking means or removable sampling member in a sealed relationship with the sampling chamber depending on which of the two has been inserted therein;
(F) said combination valve and sealing means also allowing for sealing the sampling chamber from the atmosphere in the absence of the removable sampling member and removable blocking means; and
(G) said combination valve and sealing means also allowing for interchanging the sampling member and removable blocking means without exposing the material in the shell to the atmosphere.
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Abstract
A system for obtaining a sample of particulate material being processed under seal from the air in a batch-type rotary grinding mill which permits sampling of material being processed without disturbing the seal. The system is comprised of a sampling member and a plug member which can be interchanged under seal while maintaining the seal in the mill.
13 Citations
17 Claims
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1. A system for obtaining a sample of particulate material from a batch-type grinding mill, said material being processed in the mill under seal to the atmosphere, without disturbing the seal, said system comprising:
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I. a hollow rotatably mounted shell, said shell having a peripheral wall, means for rotating the shell and grinding media within the shell; II. at least one sampling orifice located in the peripheral wall of the shell for outward discharge from the shell of material processed in the shell, each said orifice being sealable to the atmosphere; and III. at least one sampling assembly for receipt of the sample from the shell, each said sampling assembly comprising; (A) a sampling chamber sealably secured on the shell over one of said sampling orifices in the shell, said chamber having an inner wall forming a longitudinal channel with ports at either end, one port being aligned with said one sampling orifice in the shell; (B) a removable hollow sampling member sealably insertable and retainable in the sampling chamber and comprising a tubular portion at one end of the sampling member for insertion into the sampling chamber and a sealable collection chamber at the opposite end, the tubular portion having a port of entry for the sample, means for sealing the collection chamber, both with respect to the rest of the interior of the sampling member and with respect to the atmosphere; (C) grinding media blocking means to prevent the grinding media from outward passage from the shell into the sampling member; (D) removable blocking means for preventing, in the absence of the removable sampling member, the outward passage of material from the shell through the central channel of the sampling chamber; (E) combination valve and sealing means between the sampling chamber and blocking means or between the sampling chamber and sampling member for maintaining the removable blocking means or removable sampling member in a sealed relationship with the sampling chamber depending on which of the two has been inserted therein; (F) said combination valve and sealing means also allowing for sealing the sampling chamber from the atmosphere in the absence of the removable sampling member and removable blocking means; and (G) said combination valve and sealing means also allowing for interchanging the sampling member and removable blocking means without exposing the material in the shell to the atmosphere. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification