JPH0110153Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a roll mill used in pulp mills, cane sugar mills, and other factories.

Conventional technology A conventional roll mill has a feed roll and a discharge roll installed in parallel at the bottom of the housing.
The top roll is located above the two rolls and is provided in parallel to the top of the housing so that it can be raised and lowered, and furthermore, two cylinder devices are provided in the top of the housing to urge both axial ends of the top roll downward. was.

Problems to be Solved by the Invention However, with such a conventional two-cylinder roll mill, there was a problem in that the compression on the supply side of the pressed material and the compression on the discharge side of the pressed material greatly influenced each other. In other words, it is necessary to press the top roll downward with a cylinder device during operation to appropriately adjust the squeezing force between the top roll and the feed roll and the squeezing force between the top roll and the discharge roll, but since these influence each other. , when an appropriate squeezing force is set for one side, an inappropriate squeezing force may be set for the other. As a result, the squeezing capacity on the material supply side, which is a very important element in a roll mill, fluctuates, and this has a negative impact on the squeezing ability on the material discharge side, leading to a decline in the overall squeezing performance. was.

The object of the present invention is to provide a 4-cylinder, 4-roll mill that can solve these problems.

Means for Solving the Problems In order to solve the above problems, the four-cylinder, four-roll mill of the present invention is provided with a lower housing that supports the feed roll and the discharge roll in parallel, and allows the top roll parallel to both rolls to be raised and lowered. An upper housing supported by the upper housing is swingably attached between both rolls of the lower housing via a pin, and the upper housing is provided with two first cylinder devices for urging both shaft ends of the top roll downward. A swing arm supporting both axial ends of the pre-roll parallel to the top roll is swingably attached to both sides of the upper housing on the compressed material supply side via a pin, and the lower end of the swing arm and the lower housing Two second cylinder devices are attached via pins between both sides of the compressed material supply side for swinging the swing arm to move the pre-roll toward and away from the top roll.

Operation With this configuration, the squeezing force between the top roll and the feed roll and the squeezing force between the top roll and the discharge roll are applied by forcing the top roll downward by the first cylinder device, and by forcing the entire upper housing to the first cylinder. Adjustments are made by swinging a two-cylinder device via a swing arm and pre-roll. This makes it possible to independently control the squeezing force between the top roll and the feed roll and the squeezing force between the top roll and the discharge roll, and they do not affect each other as in the past. Also,
By urging the pre-roll toward the top roll by the second cylinder device, the forces between the rolls can be balanced, the top roll can be moved up and down smoothly, and the squeezing performance can be improved.

Embodiment Hereinafter, an embodiment of the present invention will be described based on the drawings.

In FIG. 1, a lower housing 1 supports a feed roll 2 and a discharge roll 3 in parallel via bearings 4 and 5, and supports the feed roll 2 at a slightly lower position than the discharge roll 3. 6 is an upper housing that supports a top roll 7 parallel to both rolls 2 and 3 so as to be able to rise and fall;
The lower ends of both rolls 2 and 3 of the lower housing 1 are swingably connected via pins (pin joints) 8 . The mounting position of this pin 8 is feed roll 2 and discharge roll 3.
With respect to the perpendicular line B from the 7th axis of the top roll drawn at the midpoint of the straight line A connecting the axes of the
It is arranged on a straight line inclined at ~7°. 9
are two first hydraulic cylinder devices installed on both sides of the upper housing 6, which hold down both shaft ends of the top roll 7 via bearings 10 that can be raised and lowered relative to the upper housing 6, and are operated as appropriate. It functions to urge the top roll 7 downward.
A swing arm 11 is swingably attached to both sides of the compressed material supply side of the upper housing 6 via pins 12, and supports both shaft ends of a pre-roll 13 parallel to the top roll 7 via bearings 14. There is. Reference numeral 15 indicates a bracket protruding from both sides of the compressed material supply side of the lower housing 1, and reference numeral 16 indicates a bracket 2 attached via pins 17 and 18 between the bracket 15 and the lower ends of both swing arms 11.
This second hydraulic cylinder device (cylinder device for pre-roll) functions to swing the swing arm 11 to move the pre-roll 13 toward and away from the top roll 7. Reference numeral 19 denotes a pre-roll turner plate, which is attached to the swing arm 11 so as to move together with the pre-roll 13. In this way, the roll mill according to the present invention,
It is constructed by combining a total of four hydraulic cylinder devices 9, 16 and a total of four rolls 2, 3, 7, 13.

With this configuration, the pressed material (for example, sugar cane in the case of a cane sugar factory) is supplied between the pre-roll 13 and the top roll 7 as shown by the arrow, and the pressed material is supplied from between the decharging roll 3 and the top roll 7. discharge. The squeezing force between the top roll 7 and the feed roll 2 and the top roll 7
The squeezing force between the upper housing 6 and the discharge roll 3 is applied by forcing the top roll 7 downwardly by the first hydraulic cylinder device 9.
The whole is adjusted by swinging the second hydraulic cylinder device 16 via the swing arm 11 and the pre-roll 13. As a result, Totsuprol 7
It becomes possible to independently control the squeezing force between the feed roll 2 and the top roll 7 and the discharge roll 3, and they do not mutually influence each other as in the past. In addition, by urging the pre-roll 13 toward the top roll 7 side by the second cylinder device 16,
By balancing the forces between the rolls 2, 3, 7, and 13, the top roll 7 can be moved up and down smoothly, and the squeezing performance can be improved. That is, the second hydraulic cylinder device 16
3 to the top roll 7 side by an appropriate amount, the pressing force of the second hydraulic cylinder device 16 is transmitted to the top roll 7 via the pre-roll 13, and then a part of the pressing force between the top roll 7 and the discharge roll 3 is transmitted to the top roll 7. becomes. Therefore, according to this roll mill, the pressing force of the second hydraulic cylinder device 16 works to compress the material to be pressed with high efficiency.
In addition, by biasing the pre-roll 13 toward the top roll 7 side, the contact pressure between the upper housing 6 and the bearing (bearing box) 10 of the top roll 7 is reduced, and the friction loss is reduced accordingly.
can move up and down inside the upper housing 6 smoothly. In this case, the pin 8 that supports the upper housing 6 is located closer to the discharge roll 3 than the feed roll 2, and a particularly large squeezing force can be obtained between the top roll 7 and the discharge roll 3. Become. Note that since the pre-roll turner plate 19 moves integrally with the pre-roll 13, the turner operation and adjustment mechanism can be extremely simple.

Effects of the Invention As described above, according to the present invention, the squeezing force between the top roll and the feed roll and the squeezing force between the top roll and the discharge roll can be individually controlled. Therefore, the squeezing capacity on the pressed material supply side, which is a very important element in a roll mill, is not affected by the pressed material discharge side, and as a result, the overall squeezing capacity can be significantly improved. . In addition, since the second cylinder device is provided, the second cylinder device urges the pre-roll toward the top roll, thereby balancing the forces between the rolls and making it possible for the top roll to move up and down smoothly. , it is possible to improve the squeezing performance. Furthermore, the upper housing and pre-roll can be easily maintained by removing the pins.

[Brief explanation of the drawing]

The drawing shows one embodiment of the present invention.
It is a side view of this roll mill. 1... Lower housing, 2... Feed roll, 3... Discharge roll, 6... Upper housing, 7... Top roll, 8, 12, 1
7, 18... Pin, 9... First hydraulic cylinder device, 11... Swing arm, 13... Pre-roll, 16... Second hydraulic cylinder device.

Claims (1)

[Scope of utility model registration request] A lower housing that supports a feed roll and a discharge roll in parallel is provided, and an upper housing that supports a top roll that is parallel to both rolls so as to be able to rise and fall is swingably mounted between both rolls of the lower housing through a pin. Two first cylinder devices are provided in the upper housing to urge both axial ends of the top roll downward, and both axial ends of the pre-roll parallel to the top roll are supported on both sides of the pressed material supply side of the upper housing. A swing arm is swingably attached via a pin, and the swing arm is swinged between the lower end of the swing arm and both sides of the compressed material supply side of the lower housing, and the pre-roll is moved against the top roll. A 4-cylinder, 4-roll mill characterized in that two second cylinder devices that are brought closer and separated are attached via pins.