Stator part of an impact mill and attachment method
In a stator part of an impact mill, attached to an inner surface of an impact mill housing wall, includes a plurality of multifunctional stator tools, which are indirectly detachably attached to the impact mill housing wall, distributed along the inner surface, the arrangeability and replaceability of the stator tools is simplified, so as to increase user friendliness during impact mill operation. This is achieved by having the stator part comprise at least one spring element with spring element recesses. The at least one spring element is circumferentially attached along the inner circumference of the impact mill housing.
1 . An impact mill including a stator part attached to an inner surface of an impact mill housing wall, the stator part comprising a plurality of multifunctional stator tools, which are indirectly detachably attached to the impact mill housing wall, distributed along the inner surface, wherein the stator tools are spaced a defined distance apart from an opposing plurality of rotor tool blades of a rotatable rotor part inside of the impact mill housing and are operatively connected with the rotor tool blades, thereby forming a grinding chamber therebetween,
wherein the stator part comprises at least one spring element with spring element recesses, wherein the at least one spring element is circumferentially attached along an inner circumference of the impact mill housing, and wherein the stator part has an upper retaining plate designed as an annular plate with a plurality of stator tool recesses facing the at least one spring element and a lower retaining plate on a side lying opposite the at least one spring element inside of the impact mill housing with a plurality of stator tool recesses, so that stator tools in the spring element recesses of the at least one spring element and the stator tool recesses in the upper retaining plate and lower retaining plate are kept detachably and replaceably stored inside of the impact mill housing.
2 . The impact mill according to claim 1 , wherein the at least one spring element is attached to the inner surface of the impact mill housing wall with a spring element attachment, or the at least one spring element is adhesively bonded to the upper retaining plate.
3 . The impact mill according to claim 2 , wherein the spring element recesses comprise recesses of different sizes for receiving stator tools that differ in width.
4 . The impact mill according to claim 2 , wherein the stator tools have a continuous width and are partially passed through the spring element recesses, and stator tool ends are introduced and held in the stator tool recesses of the upper retaining plate and the lower retaining plate.
5 . The impact mill according to claim 1 , wherein at least one of the plurality of stator tools has a transverse groove at a first end for engaging into at least one of the spring element recesses, a width in a central section, and an end pin at a second end for engaging into at least one of the stator tool recesses in the lower retaining plate, so that the at least one stator tool is swiveled into the at least one spring element recess.
6 . The impact mill according to claim 1 , wherein the plurality of stator tools comprises narrow stator tools and wide stator tools alternatingly introduced into the at least one spring element with correspondingly alternatingly varying spring element recesses, which on a side opposite the spring element are held in the stator tool recesses in the lower retaining plate.
7 . The impact mill according to claim 1 , wherein the spring element recesses comprise adjacent spring element recesses varying in shape so as to receive stator tools varying in width.
8 . The impact mill according to claim 1 , wherein the at least one spring element comprises at least four spring elements attached along a circumference of the inner surface.
9 . The impact mill according to claim 1 , wherein the at least one spring element has a one-piece design, is curved according to a circumferential line of the inner surface, and has attachment recesses to receive means for attaching the at least one spring element to the inner surface.
10 . The impact mill according to claim 1 , wherein the lower retaining plate is attached to a floor of the impact mill housing, and designed as an annular plate with a central recess.
11 . The impact mill according to claim 1 , wherein the at least one spring element is adhesively bonded or soldered to or on the upper retaining plate.
12 . The impact mill according to claim 1 , wherein the stator part has a cover with an integrally molded or attached wear plate, wherein the wear plate faces an interior of the stator part in a mounted state of the cover.