Vertical roller mills for grinding and drying supplies are well known within the art. These mills incorporate a rotary grinding track, grinding rollers (generally three in number) positioned around the track along with a housing which encases the track as well as the rollers. The grinding rollers are pulled downwardly toward the rotary grinding track to provide a preferred grinding stress. Raw material enters the raymond mill, falls onto the grinding track and is ground between the surface of your track plus the rollers. The ground material is pushed from the grinding track and carried in the mill by a gas flow.
In prior art roller mills, several stress mechanisms are utilized to trigger the rollers to exert adequate grinding pressure on the rotating grinding table. A typically employed stress mechanism is actually a pressure frame mounted above the rollers and supported by the rollers. Through hydraulic and/or mechanical signifies, the frame exerts pressure upon the rollers which exert pressure upon the grinding table. The prior art stress frame may perhaps also be combined with draw bars. The upper finish of every single draw bar is mounted by movable joints to a corresponding corner with the frame and every single lower finish of the draw bars is mounted in or on the foundation with the mill. Hydraulic or mechanical pistons and/or telescopic mechanisms might be mounted in the lower ends of the draw bars to generate a downwardly directed force around the frame and ensure the desired stress of your rollers against the grinding table.
In such stress mechanisms, the frame should be able to move in a vertical plane within the mill housing to differ the pressure of your roller against the grinding table. Nevertheless, it is desirable to decrease the movement of the frame within the horizontal plane which results from horizontal turning and twisting forces exerted on the frame. The prior art pressure frame is guided inside the mill housing via guideways mounted around the inner wall on the housing, adjacent each corner from the frame. Inside the guideways, each the frame as well as the housing are offered with vertical sliding surfaces that face each and every other. These surfaces act as influence plates and absorb a element on the turning and twisting movement on the frame in the horizontal plane. Guide mechanisms are positioned inside the guideways as well as absorb the turning and twisting forces exerted around the frame, specially within the horizontal plane. These guide mechanisms are developed as robust mountings that are attached for the inner wall with the mill housing. Consequently, the housing has to be constructed of sturdy supplies to absorb the extremely potent turning and twisting which are transmitted in the stress frame towards the mountings and mill housing. Even these sturdy mill housings, even so, are weakened because of heavy vibrations transmitted to the housing for the duration of the operation on the roller mill.
In prior art roller mills, several stress mechanisms are utilized to trigger the rollers to exert adequate grinding pressure on the rotating grinding table. A typically employed stress mechanism is actually a pressure frame mounted above the rollers and supported by the rollers. Through hydraulic and/or mechanical signifies, the frame exerts pressure upon the rollers which exert pressure upon the grinding table. The prior art stress frame may perhaps also be combined with draw bars. The upper finish of every single draw bar is mounted by movable joints to a corresponding corner with the frame and every single lower finish of the draw bars is mounted in or on the foundation with the mill. Hydraulic or mechanical pistons and/or telescopic mechanisms might be mounted in the lower ends of the draw bars to generate a downwardly directed force around the frame and ensure the desired stress of your rollers against the grinding table.
In such stress mechanisms, the frame should be able to move in a vertical plane within the mill housing to differ the pressure of your roller against the grinding table. Nevertheless, it is desirable to decrease the movement of the frame within the horizontal plane which results from horizontal turning and twisting forces exerted on the frame. The prior art pressure frame is guided inside the mill housing via guideways mounted around the inner wall on the housing, adjacent each corner from the frame. Inside the guideways, each the frame as well as the housing are offered with vertical sliding surfaces that face each and every other. These surfaces act as influence plates and absorb a element on the turning and twisting movement on the frame in the horizontal plane. Guide mechanisms are positioned inside the guideways as well as absorb the turning and twisting forces exerted around the frame, specially within the horizontal plane. These guide mechanisms are developed as robust mountings that are attached for the inner wall with the mill housing. Consequently, the housing has to be constructed of sturdy supplies to absorb the extremely potent turning and twisting which are transmitted in the stress frame towards the mountings and mill housing. Even these sturdy mill housings, even so, are weakened because of heavy vibrations transmitted to the housing for the duration of the operation on the roller mill.