# US 10,441,955 B2 · Roller mill > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,441,955 B2 - Document ID: US10441955B2 - Status: Granted - Kind: B2 - Application number: 15/033,867 - Filed: 2014-11-04 - Published: 2016-09-22 - Granted: 2019-10-15 - Earliest claimed: 2013-11-05 - Assignees: Changsha Shenxiang Universal Machine Co., Ltd. - Applicants: Changsha Shenxiang Universal Machine Co., Ltd. - Inventors: Zhigang Hao - Web page: https://patentgrep.com/patent/US10441955B2 ## CPC - B02C 15/02: Centrifugal pendulum-type mills - B02C 15/00: Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs {(high-speed drum mills B02C19/11)} - B02C 15/06: Mills with rollers forced against the interior of a rotary ring, e.g. under spring action (B02C15/04 takes precedence) - B02C 15/08: Mills with balls or rollers centrifugally forced against the inner surface of a ring, the balls or rollers of which are driven by a centrally arranged member (B02C15/02 takes precedence) - B02C 15/14: Edge runners, e.g. Chile mills - B02C 2015/008: {Roller drive arrangements} - B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02}) ## Abstract A roller mill includes a shell provided with a feed port and a discharge port; a main shaft inserted in the shell and rotatable in the shell; a drive device drivingly connected to the main shaft a holder mounted on the main shaft two or more than two grinding rollers, each of the grinding rollers mounted on the holder and rotatable around its own axis; and a grinding disk fixedly mounted in the shell at a position opposite to the multiple grinding rollers. The roller mill further includes an axial position adjustment device connected to the main shaft and configured to drive the main shaft to move axially to adjust a position of the main shaft. ## Claims ### Claim 1 A roller mill, comprising: a shell provided with a feed port and a discharge port; a main shaft inserted in the shell and rotatable in the shell; a drive device drivingly connected to the main shaft; a holder mounted on the main shaft; two or more than two grinding rollers, each of the grinding rollers mounted on the holder and rotatable around its own axis; and a grinding disk fixedly mounted in the shell at a position opposite to the two or more than two grinding rollers, wherein, the roller mill further comprises: an axial position adjustment device connected to the main shaft and configured to drive the main shaft to move axially to adjust a position of the main shaft wherein the shell comprises a cover, a first shell, and a second shell, and wherein the cover, the first shell, and the second shell are connected and arranged from top to bottom in the listed sequence, the feed port is provided in the cover and the discharge port is provided in the second shell; and the two or more than two grinding rollers have a conical shape, and the grinding disk is fixedly mounted on the second shell and is inclined relative to a horizontal plane; and wherein the axial position adjustment device is a hydraulic cylinder, the hydraulic cylinder is arranged along a vertical direction, and comprises a cylinder body, a piston rod, and a piston, the cylinder body is fixedly arranged, and the piston divides an inner cavity of the cylinder body into an upper cavity and a lower cavity, and the piston rod is movably connected to the main shaft via the drive device and is configured to drive the main shaft to move axially to adjust the position of the main shaft; and the piston rod is not rotatable and the main shaft is rotatable. ### Claim 2 (depends on 1) The roller mill according to claim 1, further comprising: a reset device configured to apply an axial restoring force on the main shaft after the main shaft moves axially. ### Claim 3 (depends on 2) The roller mill according to claim 2, wherein the reset device comprises an accumulator, and the accumulator is in communication with the upper cavity. ### Claim 4 (depends on 1) The roller mill according to claim 1, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base, and the main shaft has a free end located in the shell; and the drive device and the hydraulic cylinder of the roller mill are both located below the base, and the piston rod extends upward, and is movably connected to the main shaft via the drive device and is configured to drive the main shaft to move axially. ### Claim 5 (depends on 1) The roller mill according to claim 1, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the drive device and the hydraulic cylinder of the roller mill are both located below the base or both located above the shell; and the piston rod is movably connected to the main shaft via the drive device, and is configured to drive the main shaft to move axially, and the hydraulic cylinder is located at a side, away from the grinding rollers, of the drive device. ### Claim 6 (depends on 1) The roller mill according to claim 1, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the drive device of the roller mill is located above the shell, the hydraulic cylinder is located below the base, and the piston rod is movably connected to the main shaft. ### Claim 7 (depends on 1) The roller mill according to claim 1, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the drive device of the roller mill is located below the base, the hydraulic cylinder is located above the shell, and the piston rod is movably connected to the main shaft. ### Claim 8 (depends on 1) The roller mill according to claim 1, wherein the main shaft is supported by a top cover of the shell, the main shaft has a free end located in the shell, the drive device and the hydraulic cylinder are both located above the shell, and the piston rod extends downward, and is movably connected to the main shaft via the drive device, and is configured to drive the main shaft to move axially. ### Claim 9 (depends on 1) The roller mill according to claim 1, wherein each of the grinding rollers is mounted to the holder by a respective rocker arm mechanism, and the rocker arm mechanism comprises: an articulating seat arranged on the holder; a rocker arm, comprising a first arm and a second arm connected to each other, wherein the grinding roller is mounted to the first arm, and the first arm and the second arm are connected and form a bent connecting structure, and a portion where the first arm and the second arm are connected is articulated to the articulating seat; a position-limiting device connected to the second arm to adjust a distance between the second arm and the holder, wherein the position-limiting device comprises a first bolt passing through the rocker arm and a first nut connected to the first bolt, a bolt head of the first bolt is located between the rocker arm and the holder, and the first nut is located above the rocker arm, and one or more spacers are selectively provided between the bolt head of the first bolt and the rocker arm; and an elastic device, comprising an elastic member configured to apply a pressure towards the holder on the second arm, wherein the elastic device comprises a second bolt passing through the holder and the rocker arm, and a second nut connected to the second bolt, a bolt head of the second bolt is located below the holder, the second nut is located above the rocker arm, and the elastic member is provided between the second nut and the rocker arm. ### Claim 10 (depends on 1) The roller mill according to claim 1, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the roller mill comprises two axial position adjustment devices, and the two axial position adjustment devices are respectively cooperated with or connected to two ends of the main shaft, and are configured to drive the main shaft to move axially, to adjust the position of the main shaft. ### Claim 11 (depends on 1) The roller mill according to claim 1, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the axial position adjustment device of the roller mill cooperates with or connects to a lower end of the main shaft, and is configured to drive the main shaft to move axially, to adjust the position of the main shaft, and the reset device is located on an upper end of the main shaft. ### Claim 12 (depends on 2) The roller mill according to claim 2, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base, and the main shaft has a free end located in the shell; and the drive device and the hydraulic cylinder of the roller mill are both located below the base, and the piston rod extends upward, and is movably connected to the main shaft via the drive device and is configured to drive the main shaft to move axially. ### Claim 13 (depends on 2) The roller mill according to claim 2, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the drive device and the hydraulic cylinder of the roller mill are both located below the base or both located above the shell; and the piston rod is movably connected to the main shaft via the drive device, and is configured to drive the main shaft to move axially, and the hydraulic cylinder is located at a side, away from the grinding rollers, of the drive device. ### Claim 14 (depends on 2) The roller mill according to claim 2, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the drive device of the roller mill is located above the shell, the hydraulic cylinder is located below the base, and the piston rod is movably connected to the main shaft. ### Claim 15 (depends on 2) The roller mill according to claim 2, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the drive device of the roller mill is located below the base, the hydraulic cylinder is located above the shell, and the piston rod is movably connected to the main shaft. ### Claim 16 (depends on 2) The roller mill according to claim 2, wherein the main shaft is supported by a top cover of the shell, the main shaft has a free end located in the shell, the drive device and the hydraulic cylinder are both located above the shell, and the piston rod extends downward, and is movably connected to the main shaft via the drive device, and is configured to drive the main shaft to move axially. ### Claim 17 (depends on 2) The roller mill according to claim 2, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the roller mill comprises two axial position adjustment devices, and the two axial position adjustment devices are respectively cooperated with or connected to two ends of the main shaft, and are configured to drive the main shaft to move axially, to adjust the position of the main shaft. ### Claim 18 (depends on 2) The roller mill according to claim 2, further comprising: a base, wherein the shell is supported on the base, and the main shaft is supported by the base and a top cover of the shell; and the axial position adjustment device of the roller mill cooperates with or connects to a lower end of the main shaft, and is configured to drive the main shaft to move axially, to adjust the position of the main shaft, and the reset device is located on an upper end of the main shaft.