Manufacturing method and manufacturing device for animal excrement treatment material

Patent metadata

Field	Value
Publication number	US-10500593-B2
Application number	US-201415022930-A
Country	US
Kind code	B2
Filing date	Aug 4, 2014
Priority date	Sep 19, 2013
Publication date	Dec 10, 2019
Grant date	Dec 10, 2019

Abstract

A manufacturing method for an animal excrement treatment material includes: a granulating step; a sorting step at which granules are sorted by a sieve to form an animal excrement treatment material; and a quality control step that includes an extracting step at which a sample is extracted, a comparison data calculating step at which the surface area per unit weight of the sample is obtained, and a sieve replacement step at which the sieve is replaced on the basis of the comparison data.

First claim

The invention claimed is:

1. A method of manufacturing animal excrement disposal materials, said method comprising:
a granulating step of granulating a raw material including pulverizing bentonite into granules,
a sorting step of sorting the granules with a sieve having a prescribed mesh size to obtain the animal excrement disposal materials,
a quality control step using quality control equipment, and
a processing step of processing the animal excrement disposal materials obtained at the sorting step,
wherein the quality control step includes:
an extracting step of extracting a sample from the animal excrement disposal materials obtained at the sorting step and not yet processed at the processing step,
a comparison data calculating step of obtaining a surface area per unit weight of the sample as comparison data, and
a sieve replacing step of replacing the sieve based on the comparison data.

2. The method as defined in claim 1 , wherein
a prescribed numerical value of the surface area per unit weight is provided as reference data in the quality control step, and
the quality control step further includes a comparing step of comparing the comparison data with the reference data.

3. The method as defined in claim 1 , wherein
the sieve includes a current sieve being in use in the sorting step and a standby sieve having a different mesh size from the current sieve, and
the current sieve is replaced with the standby sieve in the sieve replacing step.

4. A method of manufacturing animal excrement disposal materials, said method comprising:
a granulating step of granulating a raw material including pulverizing bentonite into granules,
a sorting step of sorting the granules with a sieve having a prescribed mesh size to obtain the animal excrement disposal materials,
a quality control step using quality control equipment, and
a processing step of processing the animal excrement disposal materials obtained at the sorting step,
wherein the quality control step includes:
an extracting step of extracting a sample to be measured from the animal excrement disposal materials obtained at the sorting step and not yet processed at the processing step,
a comparison data calculating step of obtaining a surface area of the sample as comparison data, and
a sieve replacing step of replacing the sieve based on the comparison data.

5. The method as defined in claim 4 , wherein
a prescribed numerical value of the surface area is provided as reference data in the quality control step, and
the quality control step further includes a comparing step of comparing the comparison data with the reference data.

6. The method as defined in claim 4 , wherein
the sieve includes a current sieve being in use in the sorting step and a standby sieve having a different mesh size from the current sieve, and
the current sieve is replaced with the standby sieve in the sieve replacing step.

7. The method as defined in claim 1 , wherein
the sorting step includes
a first sorting step by a first current sieve to obtain first animal excrement disposal materials from the granules, and
a second sorting step by a second current sieve to obtain second animal excrement disposal materials from the granules, the first and second current sieves having different mesh size from each other,

the processing step includes a mixing step of mixing the first and second animal excrement disposal materials obtained respectively in the first and second sorting steps.

8. The method as defined in claim 7 , wherein the first sorting step and the second sorting step are simultaneously performed.

9. The method as defined in claim 7 , wherein
the mixing step includes
a flow control step of adjusting a mixing ratio of the first animal excrement disposal materials and the second animal excrement disposal materials, and
a mixture quality control step of controlling flow rates of the first animal excrement disposal materials and the second animal excrement disposal materials.

10. The method as defined in claim 9 , wherein
the flow control step is performed based on a control result in the mixture quality control step.

11. The method as defined in claim 4 , wherein
the sorting step includes
a first sorting step by a first current sieve to obtain first animal excrement disposal materials from the granules, and
a second sorting step by a second current sieve to obtain second animal excrement disposal materials from the granules, the first and second current sieves having different mesh size from each other,

the processing step includes a mixing step of mixing the first and second animal excrement disposal materials obtained respectively in the first and second sorting steps.

12. The method as defined in claim 11 , wherein the first sorting step and the second sorting step are simultaneously performed.

13. The method as defined in claim 11 , wherein
the mixing step includes
a flow control step of adjusting a mixing ratio of the first animal excrement disposal materials and the second animal excrement disposal materials, and
a mixture quality control step of controlling flow rates of the first animal excrement disposal materials and the second animal excrement disposal materials.

14. The method as defined in claim 13 , wherein
the flow control step is performed based on a control result in the mixture quality control step.

Assignees

• Uni Charm Corp
• Unicharm Corp

Inventors

• Takagi Chiyo
• Ikegami Takeshi

Classifications

• B02C25/00 Primary

  Control arrangements specially adapted for crushing or disintegrating · CPC title

• A01K1/0152 Primary

  Litter · CPC title

• B07B1/42

  Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens · CPC title

• B02C23/08

  Separating or sorting of material, associated with crushing or disintegrating (B02C23/18 takes precedence {; beater mills combined with sifting devices B02C13/13, B02C13/14; for tumbling mills B02C17/1835}) · CPC title

• B02C23/10

  with separator arranged in discharge path of crushing or disintegrating zone · CPC title