JP6154304B2 - Rotating machine with scraper - Google Patents

Description

  The present invention relates to a scraper-equipped rotating machine including a pair of rolls and a scraper that removes surface deposits on each roll.

  2. Description of the Related Art Conventionally, it is known to use a rotating machine that rotates a pair of parallel rolls inward when pulverizing various solids or loosening agglomerates. In such a rotating machine, the processed material may adhere to the surface of the roll depending on the physical properties of the processed material. This adhesion contributes to the deterioration of efficiency such as a reduction in throughput and a reduction in yield.

  Then, the roll crushing apparatus which scrapes off the surface deposit | attachment of a roll by using the scraping board called a scraper for the processed material which adhered is known (for example, refer patent document 1). This roll crusher can adjust the distance between a pair of rolls according to the supply size of the processed material.

Japanese Patent Publication No. 61-74653

  The scraper needs to be fixed to a fixed body such as a casing with respect to the roll which is a rotating body.

  Further, when the tip of the scraper contacts the roll surface, the rotation of the roll is hindered. On the other hand, if the gap between the scraper tip and the roll surface is too large, the surface deposit cannot be efficiently scraped off. For this reason, the clearance gap between a scraper front-end | tip and a roll surface needs to be able to be adjusted correctly.

  On the other hand, the distance between the pair of rolls also needs to be adjusted according to the processing object. If the distance between the pair of rolls is adjusted, the position of the scraper must be adjusted accordingly, and the adjustment work is difficult. It is.

  This invention is made | formed in view of this point, The place made into the objective is to enable easy adjustment of the distance between a pair of rolls, and position adjustment of a scraper.

  In order to achieve the above object, in the present invention, the scraper is fixed to the moving structure of the roll.

Specifically, in the first invention, in the rotating machine with a scraper, which includes a pair of rolls in which grooves of the same shape are arranged at equal intervals on the surface, and a scraper that removes surface deposits of each roll,
At least one of the pair of rolls is configured to be movable with respect to the other,
The scraper corresponding to the roll configured to be movable is formed with an uneven shape over the length in the axial direction in accordance with the groove shape on the surface of the roll , and the convex portion at the tip of the scraper is the groove on the surface of the roll. It is configured to move together with the roll while maintaining a state in which the recess is fitted with a gap .

According to the above configuration, even if the distance between the pair of rolls is adjusted according to the supply size of the processed material, the scraper moves while maintaining the distance between the tip of the scraper and the surface of the roll together with the movable roll. There is no need to adjust the distance between the roll surface by moving the scraper itself separately from the roll. For this reason, it is possible to save time and to keep the distance between the tip of the scraper and the roll surface constant. Moreover, it does not inhibit the rotation of the roll while scraping off the surface deposits.

And in the first invention,
The scraper is configured to be movable together with a shaft support portion that supports the central axis of the roll that is configured to be movable , and the size of the gap can be adjusted via a slot in the shaft support portion. It is concluded .

According to said structure, since a scraper moves with the shaft support part which supports the center axis | shaft of a roll, the distance between a scraper front-end | tip and a roll surface can be kept constant reliably. And the fine adjustment of the magnitude | size of a clearance gap is also possible at the fastening position of a long hole.

In the second invention, in the first invention,
With a drive,
One of the pair of rolls is a driving side roll driven by the driving device,
The other of the pair of rolls is a driven roll driven by a transmission means coupled to the drive roll;
The scraper is provided on a connecting rod that connects shaft support portions provided at both axial ends of the driven roll.

  According to the above configuration, by moving only the driven roll, the positional relationship between the drive roll and the drive device does not change, and there is no need for adjustment with the drive means. What is necessary is just to respond | correspond by a transmission means, when a driven roll is moved. Since the scraper is provided on the connecting rod that connects the shaft support portion of the driven roll, the distance between the tip of the scraper and the roll surface can be reliably maintained even when the driven roll is moved.

  As described above, according to the present invention, since the scraper is moved together with the roll configured to be movable, it is possible to easily adjust the distance between the pair of rolls and adjust the position of the scraper. it can.

FIG. 3 is an enlarged cross-sectional view taken along line II in FIG. 2. It is a top view which shows the rotary machine with a scraper which concerns on embodiment of this invention. It is the III-III line expanded sectional view of FIG. It is the arrow view seen from the IV direction of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  2 to 4 show a roll crusher 1 as a rotating machine with a scraper according to an embodiment of the present invention. The roll crusher 1 has a base 2 combined with a grooved steel or the like. An electric motor 3 is provided as a drive device. The driving device may be other driving means such as a hydraulic motor.

  A driving pulley 3 a is provided on the output shaft of the electric motor 3. A box-shaped casing 2 a is provided on the base 2, and a pair of rolls 4 and 5 are rotatably provided in the casing 2 a in parallel with the electric motor 3. The pair of rolls 4 and 5 are supported by the casing 2a by shaft support portions 6 and 7, respectively. On the surface of the pair of rolls 4 and 5, for example, grooves having the same shape like a sawtooth cross section are arranged at equal intervals. The surface shape may be changed by changing the groove pitch or the groove depth according to the material to be processed. The groove shape is not particularly limited, and may be a flat surface without a groove. As shown in FIGS. 1 and 2, a rectangular material inlet 2b is opened on the upper surface of the casing 2a, and a material outlet 2c is opened on the bottom.

  A driven pulley 4b is connected to one end of the central shaft 4a of the drive side roll 4 of the pair of rolls 4 and 5, and the driven pulley 4b is hung on a transmission belt 3b driven by the drive side pulley 3a. As a result, the drive-side roll 4 is rotated by the rotational force of the electric motor 3.

  A driving-side gear 4c as a transmission means is connected to the other end of the central shaft 4a of the driving-side roll 4 so as to rotate together. The drive side gear 4c meshes with a driven side gear 5b that is rotatably connected to the central shaft 5a of the other driven side roll 5. Thus, the driven roll 5 is rotated inward at the same rotational speed as that of the drive roll 4.

  The center shaft 4a of the drive side roll 4 is rotatably supported by a drive side shaft support portion 6 incorporating a bearing or the like (not shown). The center shaft 5a of the driven side roll 5 is rotatably supported by a driven side shaft support portion 7 incorporating a bearing or the like. In the present embodiment, the drive side shaft support portion 6 is fixed to the casing 2a, but the driven side shaft support portion 7 is configured to be slidable relative to the casing 2a.

  Specifically, the pair of driven-side shaft support portions 7 (that is, the driven-side roll 5) is attached to the casing 2a via the moving mechanism 8 so as to be movable. As shown in FIG. 4, rail members 9 made of, for example, round bars are fixed to the opposing side walls of the casing 2 a with a space in the vertical direction. The rail member 9 is inserted into, for example, a circular through hole 7 a formed in the driven side shaft support portion 7. In the driven side shaft support portion 7, the tip of the rotary handle 10 attached to the casing 2a is coupled to the driven side shaft support portion 7 by a connecting portion 7b. Accordingly, when the rotary handle 10 is rotated, the driven side shaft support portion 7 slides horizontally along the rail member 9. The rotary handle 10 is connected to a pair of driven side shaft support portions 7, respectively, and the pair of rotary handle 10 is rotated, and the connected driven side shaft support portions 7 are slid and moved, respectively. The distance between 5 can be adjusted. The meshing between the drive side gear 4c and the driven side gear 5b is preferably maintained so as not to slip even when the driven side roll 5 is moved.

  As shown in FIG. 3, the lower sides of the pair of driven side shaft support portions 7 are connected by a connecting rod 11 extending along the central axis 5a. For example, the connecting rod 11 is detachably attached to the lower side of the driven side shaft support portion 7 with a connecting rod attaching bolt 11a.

  As shown in FIG. 1, a driven scraper 12 is attached to the upper surface of the connecting rod 11. The leading end of the driven-side scraper 12 is formed with a concavo-convex shape over an axial length that matches the groove shape on the surface of the driven-side roll 5, and the convex portion leaves a gap in the concave portion of the groove on the surface of the driven-side roll 5. The positional relationship is fitted. The distance between the tip of the driven-side scraper 12 and the surface of the driven-side roll 5 is set to an appropriate distance that is neither too close nor too far. Thereby, the rotation of the driven roll 5 is not hindered while scraping off the surface deposits. The driven-side scraper 12 can be attached to and detached from the connecting rod 11 by passing the scraper mounting bolt 13 through the long hole 12a, and fine adjustment is also possible at the fastening position of the long hole 12a. Since the driven-side scraper 12 is fixed to the upper surface of the connecting rod 11, it moves together with the connecting rod 11 when the connecting rod 11 moves in accordance with the operation of the rotary handle 10. In the present embodiment, the connecting rod 11 is made of, for example, a metal bar having a rectangular cross section, and has high rigidity.

  On the other hand, the drive-side scraper 14 corresponding to the drive-side roll 4 is fixed to the periphery of the material discharge port 2c of the casing 2a by a scraper mounting bolt 13. The drive-side scraper 14 has substantially the same shape as the driven-side scraper 12, but is configured to fit into the groove shape on the surface of the drive-side roll 4. The drive-side scraper 14 can also be attached to and detached from the bottom surface of the casing 2a by passing the scraper mounting bolt 13 through the long hole 14a, and the position of the drive-side scraper 14 can be finely adjusted only at the fastening position of the long hole 14a. .

  With this configuration, even if the distance between the pair of rolls 4 and 5 is adjusted in accordance with the supply size of the processed material, the driven-side scraper 12 and the driven-side scraper 12 can be moved together with the driven-side scraper 12 that can move. Since it moves while maintaining the distance from the surface of the side roll 5, it is not necessary to adjust the distance from the surface of the driven side roll 5 by moving the driven side scraper 12 itself, saving labor and the driven side scraper. The distance between the 12 tip and the driven roll 5 surface can be kept constant.

  By moving only the driven side roll 5 on the driven side, the positional relationship between the drive side roll 4 and the electric motor 3 does not change, and there is no need to adjust the transmission belt 3b. When the driven roll 5 is moved, there is no need to adjust the meshing or the like as long as the driving gear 4c and the driven gear 5b are meshed with each other.

  Since the driven-side scraper 12 is provided on a relatively rigid connecting rod 11 that connects the shaft support portion 7 of the driven-side roll 5, even if the driven-side roll 5 is moved, the driven-side scraper 12 and the driven scraper 12 are driven. The distance from the surface of the side roll 5 can be kept constant.

  Therefore, according to the roll crusher 1 according to the present embodiment, the driven-side scraper 12 is moved together with the driven-side roll 5 configured to be movable. The position adjustment of the driven-side scraper 12 can be easily performed simultaneously.

(Other embodiments)
The present invention may be configured as follows with respect to the above embodiment.

  That is, in the above embodiment, only the driven roll 5 is movable, but the drive roll 4 may be movable. In that case, a connecting rod 11 may be provided on the lower side of the driving side roll 4, and the driving side scraper 14 may be attached to the connecting rod 11.

  Moreover, in the said embodiment, although the rotary machine with a scraper was the roll crusher 1, a pair of rolls rotate and crush, pulverize, sizing, and the like, and remove deposits on the roll surface. There is no particular limitation as long as it is a crusher, a pulverizer, a granulator or the like provided with a scraper.

  Moreover, in the said embodiment, although the roll crusher 1 which has a pair of rolls 4 and 5 was demonstrated, it may be made to process a material by providing multiple pairs of rolls from which groove shape and distance between rolls differ in multiple stages. Good.

  In addition, the above embodiment is an essentially preferable illustration, Comprising: It does not intend restrict | limiting the range of this invention, its application thing, or a use.

1 Roll crusher (rotary machine with scraper)
2 base
2a casing
2b Material input
2c Material outlet
3 Electric motor (drive device)
3a Drive pulley
3b Transmission belt
4 Drive side roll
4a Center axis
4b driven pulley
4c Drive-side gear (transmission means)
5 Follower roll
5a Center axis
5b Driven side gear
6 Drive side shaft support
7 Driven side shaft support
7a Through hole
7b Connection part
8 Movement mechanism
9 Rail member
10 Rotating handle
11 Connecting rod
11a Connecting rod mounting bolt
12 Driven scraper
12a long hole
13 Scraper mounting bolt
14 Drive-side scraper
14a long hole

Claims (2)

In a rotary machine with a scraper comprising a pair of rolls having grooves of the same shape arranged on the surface at equal intervals, and a scraper that removes surface deposits on each roll,
At least one of the pair of rolls is configured to be movable with respect to the other,
The scraper corresponding to the roll configured to be movable is formed with an uneven shape over the length in the axial direction in accordance with the groove shape on the surface of the roll, and the convex portion at the tip of the scraper is the groove on the surface of the roll. It is configured to move with the roll while maintaining a state of being fitted with a gap in the recess ,
The scraper is configured to be movable together with a shaft support portion that supports the central axis of the roll that is configured to be movable, and the size of the gap can be adjusted via a long hole with respect to the shaft support portion. A rotating machine with a scraper, which is fastened. The rotary machine with a scraper according to claim 1 ,
With a drive,
One of the pair of rolls is a driving side roll driven by the driving device,
The other of the pair of rolls is a driven roll driven by a transmission means coupled to the drive roll;
The scraper is a rotating machine with a scraper, characterized in that the scraper is provided on a connecting rod that connects shaft support portions respectively provided at both axial ends of the driven roll.

Images