Roller mill grinding cylinder damper system

Abstract

The invention relates to the roller mill grinding cylinder damper system developed for the effective damping of pressures with different forces due to sudden impact and excessive vibration between the grinding rolls connected to the fixed and moving bearings of the roller mill used in grain grinding systems.

Description

[0001] DESCRIPTION

[0002] ROLLER MILL GRINDING CYLINDER DAMPER SYSTEM TECHNICAL FIELD

[0003] The invention relates to the roller mill grinding cylinder damper system developed for the effective damping of pressures with different forces due to sudden impact and excessive vibration between the grinding rolls connected to the fixed and moving bearings of the roller mill used in grain grinding systems.

[0004] PRIOR ART

[0005] The damping elements used in the grain grinding roller mills play an important role in ensuring that the grinding process is carried out efficiently and stably. One of the main functions of these elements is to ensure effective disintegration and grinding of the material by creating sufficient pressure between the grinding rollers. The damping elements apply a continuous and constant force, allowing the grinding process to continue steadily. During grinding, sudden load changes may occur depending on the hardness of the material, its structure, foreign matter that may be in the material or changes in the amount of feed. Such changes may disturb the balance of the system and adversely affect the grinding process. The damping elements dampen these sudden load changes, preventing damage to the cylinders and increasing the stability of the system.

[0006] In grain grinding roller mills, control of the pressure between the grinding rollers is usually provided by mechanical, hydraulic or pneumatic systems. In these systems, precise adjustment of the distance and contact force between the cylinders is essential. The adjustment mechanisms are designed to operate automatically without the need for operator intervention.

[0007] In mechanical systems, the pressure between the cylinders is controlled by spring mechanisms or screw assemblies. These devices determine the distance of the cylinders, allowing the force applied during the grinding process to be balanced. In mechanical adjustment systems, high-quality materials areused to ensure that the assemblies are wear-resistant and that there is no loss of sensitivity in long-term use.

[0008] In hydraulic systems, the control of pressure is carried out by means of hydraulic cylinders and valves. The cylinders are filled with liquid under a certain pressure, making it possible to apply the desired force between the grinding cylinders. This method is characterized by high accuracy and fast response time. Pressure levels are continuously monitored by sensors and control units and automatically adjusted when necessary.

[0009] In pneumatic systems, the distance between the cylinders is controlled using air pressure. This method is especially preferred due to its low energy consumption and simple maintenance requirements. In pneumatic systems, pressure regulators and air compressors are used to improve the efficiency and stability of the grinding process.

[0010] In all these systems of the present art, the correct adjustment of the pressure between the cylinders improves both the quality of the grinding process and the energy efficiency. In addition, safety mechanisms are put in place to prevent damage to cylinders and other components in cases of over-pressure. In general, these mechanisms automatically stop the system in cases of overload and prevent possible failures.

[0011] Conventional vibration damping systems used in roller mills have fixed properties, so it is difficult to adapt to different operating conditions. This is especially evident when sudden load changes or excessive vibrations cannot be managed effectively enough.

[0012] A method and system for reducing the vibrations of the roll mill is proposed in the document with file number CN116550759. The system consists of three main components, a vibration-reducing device, a controller and a roller system. In the proposed method, the current amplitude-frequency relationship in the vibration process of the system is determined and simulations are performed using this relationship. As a result of the simulations, time and amplitudefrequency relationships are determined for the operating and non-operating states of the vibration attenuating device. Then, based on this data, the parameters of the vibration-reducing device are adjusted and the roller systemvibration displacement values are reduced below a predetermined threshold level. In this way, high-frequency, low-frequency and irregular vibrations are effectively controlled, the service life of the roller system is extended and the overall stability of the roller mill is increased. While the developed system is based on an active control mechanism and continuous adjustment of device parameters, it does not offer a solution for the flexibility required for instantaneous damping needs.

[0013] BRIEF DESCRIPTION OF THE INVENTION

[0014] The invention relates to the roller mills grinding cylinder damper system developed for the effective damping of pressures with different forces due to sudden impact and excessive vibration between the grinding cylinders connected to the fixed and moving bearings of the roller mills used in grain grinding systems.

[0015] In the roller mill grinding cylinder damper system developed, thanks to the compression spring (8) positioned at the end of the compression force movement lever (5) between the fixed bearing (2) and the moving bearing (3) and the damping group formed by the combined use of the damper element (9), the pressure between the grinding cylinders can be realized flexibly and healthily against different forces.

[0016] The damper element (9) used with the compression spring (8) in the developed roller mill grinding cylinder damper system is obtained by the integration of non-Newtonian liquid material during production into the closed porous polyurethane material. In this way, the instantaneous and different pressures that may occur between the cylinders can be damped in a healthy way.

[0017] DESCRIPTION OF THE FIGURES

[0018] Figure 1. General view of Grinding Cylinder Damper System

[0019] The equivalents of the part numbers indicated in the figures are given below.1. Connection bearing

[0020] 2. Fixed Bearing

[0021] 3. Movable Bearing

[0022] 4. Fixed Bearing Lever

[0023] 5. Motion Lever

[0024] 6. Movable Bearing Lever

[0025] 7. Bearing Support

[0026] 8. Pressure Spring

[0027] 9. Damper Element

[0028] DETAILED DESCRIPTION OF THE INVENTION

[0029] The roller mills grinding cylinder damper system, which is the subject of the invention in order to effectively dampen the pressures with different forces due to sudden impact and excessive vibration between the grinding cylinders connected to the fixed and moving bearings of the roller mills used in the grain grinding systems; The damper element (9) includes parts and sections obtained in the form of the motion lever (5) connected to the fixed bearing arm (4) in order to adjust the pressure between the fixed bearing (2) and the movable bearing (3) sections positioned on the mill roll connection bearing (1) and on which the grinding cylinders are connected, the movement arm (5) made in the horizontal axis depending on the pressure between the cylinders a mixture of the compression spring (8) positioned at the end of the movement arm (5), the polyurethane material positioned at the end of the motion lever (5) together with the pressure spring (8) to increase the damping effect of the pressure spring (8), and the non-Newtonian liquid material, which is positioned at the end of the motion lever (5) in such a way that the pressure force on the motion lever (5) is damped as a result of a sudden impact or vibration that causes the cylinder connected to the movable bearing (3) to move away from the cylinder connected to the fixed bearing (2), the bearing support (7) in contact with the movable bearing lever (6) on the movable bearing (3) depending on the movement.

[0030] The damper element (9) developed in the mill roll grinding cylinder damper system of the invention is preferably positioned circumferentially around thepressure spring (8) so that the pressure spring (8) positioned at the end of the motion lever (5) remains in the center.

[0031] The damper element (9) developed in the roller mill grinding cylinder damper system of the invention is obtained by the integration of non-Newtonian liquid material during production into the closed porous polyurethane material.

[0032] The damper element (9) developed in the roller mill grinding cylinder damper system, which is the subject of the invention, preferably contains nonNewtonian liquid material obtained as a polymer solution.

[0033] The roller mill grinding cylinder damper system of the invention is positioned on the mill roll connection bearing (1) and is arranged between the fixed bearing (2) and the movable bearing (3). The motion lever (5) connected to the fixed bearing lever (4) moves horizontally in order to control the pressure between the cylinders and contacts the movable bearing lever (6) on the movable bearing (3). This contact limits the movement of the cylinder on the movable bearing (3) away from the cylinder on the fixed bearing (2) as a result of sudden impacts or vibrations.

[0034] In order to effectively dampen the pressure force on the motion lever (5), the pressure spring (8) is positioned at the end of the motion lever (5). This pressure spring (8) dampens the effects of sudden impacts and vibrations and increases the stability of the system. Together with the pressure spring (8), a damper element (9) produced using a mixture of polyurethane material and nonNewtonian liquid material is developed in order to further increase its damping effect. The damper element (9) is preferably arranged circumferentially at the end of the motion lever (5) so that the pressure spring (8) remains centrally located.

[0035] The non-Newtonian liquid integrated into the closed porous polyurethane material during production gives the damper element (9) superior damping properties. This structure utilizes the properties of a liquid that solidifies with increasing viscosity at high deformation rates and provides effective control of vibrations and sudden pulses. Thus, the efficiency of the grinding process is increased, the life of the system components is extended and a stable working environment is provided.

Claims

CLAIMS1. The roller mill grinding cylinder damper system, which is the subject of the invention in order to effectively dampen the pressures with different forces due to sudden impact and excessive vibration between the grinding cylinders connected to the fixed and movable bearings of the roller mills used in the grain grinding systems; characterized in that the damper element (9) includes parts and sections obtained in the form of motion lever (5) connected to the fixed bearing lever (4) in order to adjust the pressure between the fixed bearing (2) and the movable bearing (3) sections positioned on the mill roll connection bearing (1 ) and on which the grinding cylinders are connected, the motion lever (5) made in the horizontal axis depending on the pressure between the cylinders a mixture of the pressure spring (8) positioned at the end of the motion lever (5), the polyurethane material positioned at the end of the motion lever (5) together with the pressure spring (8) to increase the damping effect of the pressure spring (8), and the non-Newtonian liquid material, which is positioned at the end of the motion lever (5) in such a way that the pressure force on the motion lever (5) is damped as a result of a sudden impact or vibration that causes the cylinder connected to the movable bearing (3) to move away from the cylinder connected to the fixed bearing (2), the bearing support (7) in contact with the movable bearing lever (6) on the movable bearing (3) depending on the movement.

2. Roller mill grinding cylinder damper system according to claim 1, characterized in that it comprises a damper element (9) circumferentially positioned around the pressure spring (8), preferably with the pressure spring (8) positioned at the end of the motion lever (5) centrally.

3. Roller mill grinding cylinder damper system according to claim 1, characterized in that it comprises the damper element (9) obtained by the integration of non-Newtonian liquid material during production into the closed porous polyurethane material.

4. Roller mill grinding cylinder damper system according to claim 1, characterized in that it comprises the damper element (9) obtained by theintegration of non-Newtonian liquid material during production into the closed porous polyurethane material.

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