Roller mill adjustment lever lock mechanism

Abstract

The invention relates to a roller mill adjustment lever lock mechanism used to regulate and control the distance and parallelism between crushing rollers in grinding mill systems aiming to prevent unwanted rotational movement of the roller mill adjustment lever, which occurs during the operation of the grinding mill, due to factors such as vibration, and to prevent consequent changes in the distance between the crushing rollers.

Description

[0001] ROLLER MILL ADJUSTMENT LEVER LOCK MECHANISM

[0002] TECHNICAL FIELD OF INVENTION

[0003] The invention relates to a roller mill adjustment lever lock mechanism used to regulate and control the distance and parallelism between crushing rollers in grinding mill systems aiming to prevent unwanted rotational movement of the roller mill adjustment lever, which occurs during the operation of the grinding mill, due to factors such as vibration, and to prevent consequent changes in the distance between the crushing rollers.

[0004] PRIOR ART

[0005] An adjustment mechanism is employed to precisely regulate the distance between the crushing rollers in grinding mill systems, particularly those used in grain milling. This mechanism allows operators to adjust the distance between the crushing rollers via a roller mill adjustment lever, depending on factors such as the type of product to be ground, the desired degree of grinding, and any changes in roller diameter over time due to wear and tear.

[0006] The grinding roller mill adjustment lever is designed to regulate and control the parallelism of the crushing rollers in the mill's roller system. Proper adjustment of the distance between the crushing rollers ensures that the material is ground to the desired size, enhancing the efficiency of the process.

[0007] Existing roller mill adjustment levers feature mechanical locking mechanisms designed to prevent unintended rotational movement. These locking mechanisms prevent unwanted movements of the roller mill adjustment lever, ensuring that the adjustments remain fixed. The most commonly used roller mill adjustment lever locking mechanism in the prior art involves a tapered compression pin placed on the shaft connected to the hand wheel. This pin is moved towards the hand wheel via a nut accessible from outside the machine, compressing the shaft due to its conical shape and preventing its movement. However, this locking method, which relies solely on the tight contact of the tapered pin on the shaft, may result in changes in the position of the shaft and the precise distance between the crushing rollers during the operation of the grinding mill due to vibrations. As a result, the grinding process may not achieve the desired efficiency.

[0008] The document with file number TR201802405 discusses the locking mechanism of the precision adjustment cam used for adjusting the distance between the two opposing cylinders in the roller mill machines used for grinding grains. In the described locking mechanism, locking is achieved by a gear section created on the hand wheel engaging with another gear section inside a box located within the mechanism. The rotation and locking of the hand wheel are ensured by controlling the contact of the gear surfaces while moving the hand wheel forward and backward. The control of the hand wheel’s forward-backward movement for locking is provided by spring-loaded locking elements located on the box used for locking. These spring-loaded locking elements establish contact between the locking box and the body of the hand wheel.

[0009] BRIEF DESCRIPTION OF THE INVENTION

[0010] In order to prevent undesired rotational movement of the roller mill adjustment lever, which is used to regulate and control the distance and parallelism between the crushing rollers in the grinding roller mill in the milling systems, due to vibration and similar factors occurring during the operation of the grinding roller, and accordingly, to prevent changes in the distance between the crushing rollers, the inventive roller adjustment lever lock mechanism has been developed.

[0011] Fewer parts and higher locking strength have been provided from the developed locking mechanism for the roller mill adjustment lever than the ones used in the existing techniques.

[0012] In the developed locking mechanism for the roller mill adjustment lever, the engagement of the gear locking surface (2.1 ) formed on the hand wheel (2) with the gear locking surface (3.1 ) created on the shaft bearing bracket (3) prevents the hand wheel (2) from rotating around its own axis, thereby preventing the movement of the threaded actuation shaft (1 ) to which the hand wheel (2) is attached. As a result, after the distance between the crushing rollers is precisely adjusted using the hand wheel (2), the grinding process can continue without changes in the position of the threaded actuation shaft (1 ) due to vibrations and similar factors that may occur during the operation of the grinding roller-mill.

[0013] In the developed locking mechanism for the roller mill adjustment lever, the positioning of the hand wheel (2) along the axis of the threaded actuation shaft (1 ) is ensured through a ball-ended setscrew bolt (2.2) attached to the hand wheel (2), which moves within positioning channels (1.1 ) formed along the shaft axis.

[0014] In the developed locking mechanism for the roller mill adjustment lever, the connection of the hand wheel (2) to the threaded actuation shaft (1 ) is facilitated through a shaft connection pin (4). The shaft connection pin (4) attached to the hand wheel (2) is positioned within a connection channel created along the threaded actuation shaft (1 ), ensuring its engagement with the threaded actuation shaft (1 ) throughout the movement distance along the axis of the hand wheel (2). This ensures continuous contact between the hand wheel (2) and the threaded actuation shaft (1 ), independent of the movement between the locking and open positions of the hand wheel (2).

[0015] DESCRIPTION OF FIGURES

[0016] Figure 1 . Sectional View of Roller mill Adjustment Lever Locking Mechanism in Closed Position Figure 2. Sectional View of Roller mill Adjustment Lever Locking Mechanism in Open Position Figure 3. Sectional View of Roller mill Adjustment Lever Locking Mechanism in Open Position Figure 4. Sectional View of Roller mill Adjustment Lever Locking Mechanism in Previous Technic

[0017] The corresponding part numbers for the figures are provided below:

[0018] 1. Screwed Motion Shaft

[0019] 1.1. Positioning Channel

[0020] 2. Hand wheel

[0021] 2.1. Gear Lock Surface 2.2. Ball-End Set Screw

[0022] 2.3. Ball

[0023] 3. Shaft Bearing Bracket

[0024] 3.1. Gear Lock Surface

[0025] 4. Shaft Connection Pin

[0026] 5. Gearless Hand wheel

[0027] 6. Clamping Lever Nut

[0028] 7. Clamping Bolt

[0029] DETAILED DESCRIPTION OF THE INVENTION

[0030] The invention relates to a locking mechanism for the adjustment lever of a roller mill, used to regulate and control the distance and parallelism between the grinding roller mill in milling systems, in order to prevent unwanted rotational movement of the adjustment lever due to vibrations and similar factors occurring during the operation of the grinding roller, and thereby prevent changes in the distance between the crushing rollers; and comprises at least one positioning channel (1.1 ) for positioning the ball of a ball-ended set screw bolt (2.3) in contact with a hand wheel (2) for transferring motion for the distance between the crushing rollers, and limiting the movement of the ball, and at least one connection channel for the positioning of the shaft connection pin (4). It further includes a threaded actuator shaft (1 ) comprising a threaded locking surface (2.1 ) for surface contact locking, allowing precise adjustment of the distance between the crushing rollers, at least one ball-ended set screw bolt (2.2) for limiting movement along the axis of the threaded actuator shaft (1 ), and a hand wheel (2) containing at least one ball (2.3) in contact for rotational movement on the set screw bolt (2.2) to move along the bolt axis. Also, it comprises a shaft bearing housing (3) with a threaded locking surface (3.1 ) for surface contact locking to allow the shaft (3) to be supported and a shaft connection pin (4) positioned between the hand wheel (2) and the threaded actuator shaft (1 ) for transmitting motion between them. The threaded actuator shaft (1 ) developed in the subject invention of the roller mill adjustment lever locking mechanism includes at least one positioning channel (1.1 ) created preferably along its surface, preferably in the form of an indentation, along the circumference of the shaft and preferably from the shaft surface towards the shaft center.

[0031] The threaded actuator shaft (1 ) developed in the subject invention of the roller mill adjustment lever locking mechanism comprises at least one connection channel created on its surface in the form of an indentation towards the shaft center from the shaft surface, allowing the positioning of the shaft connection pin (3) inside, and preferably having a length equal to the distance the hand wheel (2) will traverse between the locked and open positions.

[0032] The hand wheel (2) developed in the subject invention of the roller mill adjustment lever locking mechanism includes a toothed locking surface (2.1 ) formed in a protruding and recessed manner to ensure locking by surface contact on the section where it contacts the shaft bearing housing (3) toothed locking surface (3.1 ).

[0033] The shaft bearing housing (3) developed in the subject invention of the roller mill adjustment lever locking mechanism comprises a toothed locking surface (3.1 ) with a toothed structure formed in a protruding and recessed manner on the section where the hand wheel (2) contacts the toothed locking surface (2.1 ), ensuring locking by surface contact.

[0034] In the current state of the art, the most commonly used roller mill adjustment lever locking mechanism involves the compression of a conical threaded compression pin (7) placed on the motion shaft (1 ) where the hand wheel (5) is connected. This compression is achieved by moving the compression pin towards the hand wheel via a nut (6) accessible from outside the machine, compressing the motion shaft due to its conical structure and thereby preventing its movement.

[0035] In the roller mill adjustment lever locking mechanism according to the invention, the hand wheel (2) is pulled by the operator outside the machine along the axis of the threaded actuator shaft (1 ) and rotated around its own axis. Through the connection pin (4), the threaded actuator shaft (1 ) rotates around its axis, thereby precisely adjusting the distance between the grinding roller of the grinding roller-mill. The distance between the crushing rollers is monitored using an indicator on the hand wheel (2), and when the desired distance is achieved, the hand wheel (2) is moved by the operator, again along the axis of the threaded actuator shaft (1 ) but this time towards the machine. When the toothed locking surface (2.1 ) on the hand wheel (2) makes full surface contact with the toothed locking surface on the shaft bearing housing (3), the ball (2.3) located at the tip of the ball-ended set screw bolt (2.2) on the hand wheel (2) is positioned within the positioning channel (1.1 ) on the threaded actuator shaft (1 ). This limits the movement of the hand wheel (2) both on the toothed locking surface (3.1 ) of the shaft bearing housing (3) and on the threaded actuator shaft (1 ). Thus, while the surface contact prevents the rotational movement of the hand wheel (2) around the axis of the threaded actuator shaft, the positioning of the ball (2.3) within the positioning channel (1.1 ) limits the movement of the hand wheel (2) along the axis of the threaded actuator shaft (1 ). As a result, this achieves locking in two different axes.

Claims

CLAIMS1. The invention relates to a locking mechanism for the adjusting lever of a roller mill used to regulate and control the distance and parallelism between crushing cylinders in grinding mill systems, in order to prevent unwanted rotational movement of the adjusting lever and consequently changes in the distance between crushing cylinders due to vibration and similar factors during the operation of the grinding roller; the feature of the invention is characterized by comprising at least one positioning channel (1.1 ) providing motion transmission for the distance between the crushing cylinders of the grinding roller and limiting the movement of the ball bearing (2.3) connected to the hand wheel (2), and at least one connection channel in which the shaft connection pin (4) is positioned, a threaded movement shaft (1 ) including at least one positioning channel (1.1 ) and at least one connection channel in which the shaft connection pin (4) is positioned, providing precise adjustment of the distance between the crushing cylinders via the threaded movement shaft (1 ), a gear locking surface (2.1 ) created for locking with surface contact, at least one ball-bearing socket screw (2.2) limiting movement along the axis of the threaded movement shaft (1 ), and a hand wheel (2) comprising at least one ball (2.3) in contact with the ball-bearing socket screw (2.2) and capable of rotational movement on the socket screw (2.2) and movement along the axis of the screw, an elbow wheel (2) providing for the bearing of the threaded movement shaft (3) and comprising a gear locking surface (3.1 ) for locking with surface contact, and a shaft bearing bracket (3) providing for the bearing of the threaded movement shaft (3) and comprising a gear locking surface (3.1 ) for locking with surface contact, and a shaft connection pin (4) positioned between the threaded movement shaft (1 ) and the hand wheel (2) for transmitting motion, and parts and sections characterized by facilitating the transmission of motion between the hand wheel (2) and the threaded movement shaft (1 ).

2. According to claim 1 , the locking mechanism for the adjusting lever of a rollermill is characterized by at least one positioning channel (1.1 ) preferably formed along the surface of the threaded movement shaft (1 ), preferably in arecessed shape along the circumference of the shaft and preferably towards the center of the shaft from the shaft surface.

3. According to claim 1 , the locking mechanism for the adjusting lever of a roller mill is characterized by at least one connection channel formed on the surface of the threaded movement shaft (1 ) in a recessed shape towards the center of the shaft from the shaft surface, allowing for the positioning of the shaft connection pin (3) within it, and having a length equal to the distance the hand wheel (2) will travel between its locking and open positions.

4. According to claim 1 , the locking mechanism for the adjusting lever of a roller mill is characterized by comprising a toothed locking surface (2.1 ) on the section where the hand wheel (2) contacts the gear locking surface (3.1 ) of the shaft bearing cup (3), formed in a toothed structure with protrusions and recesses to ensure locking through surface contact.

5. According to claim 1 , the locking mechanism for the adjusting lever of a roller mill is characterized by comprising at least one ball-bearing socket screw (2.2) connected to a ball (2.3) and positioned on the positioning channel (1.1 ) of the threaded movement shaft (1 ), capable of moving towards the center of the shaft and towards the axis of the wheel outside the channel (1.1 ).

6. According to claim 1 , the locking mechanism for the adjusting lever of a roller mill is characterized by comprising a toothed locking surface (3.1 ) with a toothed structure, formed with protrusions and recesses, on the section where the shaft bearing cup (3) contacts the gear locking surface (2.1 ) of the hand wheel (2), to ensure locking through surface contact.

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