JPH08309213A - Roll machine - Google Patents

Abstract

PURPOSE: To eliminate problems such as the heat generation and the breakage of rolls and the wear of a scraper by providing an attaching and detaching means for pressing the scraper in contact with the rolls when a stock is fed to the rolls and for separating the scraper from the rolls during no feeding of the stack. CONSTITUTION: At startup, with a low speed roll 4 being separated from the high speed roll 5 side, a scraper 25 is turned toward the clearance between the rolls and scraping plates 27 are separated from the rolls 4, 5. In such a state, when the stock is accumulated in a stock feeding chamber 39 and a level sensor 40f gives a detection signal, a feeder gate plate 44 is opened to feed the stock into the clearance between the rolls 4, 5 by the drive of feeding rolls 42, 43. At the same time, the roll 4 is moved to the roll 5 side, and also an axis of an air cylinder 36 is moved to separate a fixed plate from projecting plates 28, allowing the scraper 25 to be turned. As a result, the scraping plates 27 are pressed in contact with the rolls 4, 5 to pulverize the stock.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a rolling machine for crushing grains.

[0002]

2. Description of the Related Art Roll machines used for crushing grains, particularly wheat grains, to obtain flour are classified into a notice roll machine and a smooth roll machine. The dressing roll machine has multiple rolls (tooth shape) on its surface and is used for the cracking, spreading and sizing of raw wheat and stock, while the smooth roll is used for crushing stock. Has been.

In this smooth surface rolling machine, the temperature of the roll surface during crushing of the stock increases due to friction with the stock, and the water content of the pulverized product evaporates with the increase in temperature on the roll surface. A state where
This is a cause of the roll's crushing performance being significantly reduced, and vibration and accidents occurring. Therefore, in order to keep the pulverizing performance constant, it is necessary to remove the pulverized material adhering to the roll surface with a scraper. As this type of scraper, JP-B-43-26780 and JP-B-57-500501 are disclosed. It is described that these scrapers are made of steel, and are constantly pressed against the roll surface by springs or weights.

By the way, in a roll machine, when stock is not supplied to the roll gap, a method of opening the roll gap by roll gap adjusting means in order to prevent damage to the roll or heat generation due to contact between the rolls is proposed. It is taken. While the scraper described above is effective in removing the crushed material adhering to the roll because the scraper is in pressure contact with the roll while the roll is crushing the stock, the stock is not supplied to the roll gap. While the roll gap is opened by the roll gap adjusting means, the scraper is pressed against the roll, so the roll and the scraper rub against each other, heat generation and damage of the roll, abrasion of the scraper, and further ignition may occur. There was a problem.

[0005]

SUMMARY OF THE INVENTION In view of the above problems, the present invention, while the stock is being supplied to the roll gap, presses the scraper against the roll to remove the pulverized material adhering to the roll, and (EN) Provided is a roll machine in which the scraper is separated from the roll while stock is not supplied to the gap and the roll gap is opened by the roll gap adjusting means, so that heat generation and damage of the roll and abrasion of the scraper do not occur. Is a technical issue.

[0006]

In order to solve the above-mentioned problems, the roll machine of the present invention engages with the scraper when the stock is not supplied to the roll, separates the scraper from the roll, and stocks the roll. Is supplied, a contacting / separating means is provided which separates from the scraper and presses the scraper against the roll by the pressure contacting means.

[0007]

[Operation] When stock is supplied to the roll,
The scraper is pressed against the roll by the pressing means to remove the pulverized material adhering to the roll, and when the stock is not supplied to the roll, the scraping means separates the scraper from the roll.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is a compound type roll machine, which is one frame 2 partitioned by an intermediate partition plate 3 and the like, and a pair of rolls 4 and 5 are symmetrically provided. An opening 6 for entering and exiting the high speed roll 5 and the low speed roll 4 is formed on each of a front wall and a rear wall of a frame 2 forming the roll machine 1, and a roll cover 7 is detachably attached to the opening 6. To do. Corresponding to the opening 6, roll notches 9 are provided on both side walls 8 of the frame 2. The roll entrance / exit notch 9 is wide on the side of the opening 6 and extends horizontally and slenderly toward the center to close it. Then, the moving bearing 10 is arranged on the closed side of the roll-in / out notch 9 and the fixed bearing 11 is arranged near the opening 6, and the low speed roll 4 is mounted on the moving bearing 10 and the high speed roll 5 is mounted on the fixed bearing 11. To do. A contact plate 1 is provided between the moving bearing 10 and the fixed bearing 11.
2 is provided.

That is, the fixed bearing 11 is fixed to the side wall 8 of the frame 2 by bolts, while the moving bearing 10 is fixed.
About half of the fixed bearing 11 side is formed in the split case 10a and is detachably fixed to the moving bearing 10 with a bolt. Further, the lower end of the moving bearing 10 is pivotally attached to the side wall 8 via a roll opening / closing eccentric wheel 13, and as a driving means of the eccentric wheel 13, an arm 15 axially attached to a main shaft 14 of the eccentric wheel 13 is provided. Roll gap adjusting means 17 connected to the roll opening / closing air cylinder 16 is provided. Moving bearing 1
The upper end of 0 is connected to a roll fine adjustment eccentric wheel 19 having a roll fine adjustment eccentric wheel drive means 18 provided on the side opposite to the fixed bearing 11 of the moving bearing 10 via a disc spring 20.

Further, the high speed roll 5 and the low speed roll 4
Is surrounded by a cover 21 to form a grinding chamber 22, and a lower portion of the grinding chamber 22 serves as an outflow hopper 23, and a transport pipe 24 that forms a transportation path in the outflow hopper 23.
Is facing. Scrapers 25 for removing crushed substances adhering to the rolls 4 and 5 are provided in the grinding chamber 22 and near the lower portions of the rolls 4 and 5, respectively. A scraping plate 27 made of steel is sandwiched by a sandwiching portion formed on the upper part, and a projecting plate 28 and a rotating shaft 29 projecting toward the roll gap side and the cover 21 side are provided at the lower parts of the supports 26, respectively. It is fixed. A spring 3 for pressing the scraping plate 27 to the rolls 4 and 5 is provided at the end of each protruding plate 28 on the cover 21 side.
The pressure contact means consisting of 0 is connected, and the spring 30
A tension adjusting device 33 including a connecting rod 31 and a nut 32 screwed with the connecting rod 31 for adjusting the tension of the spring 30 is connected to one end. A fixing plate 35 fixed to the upper part of the shaft 34 by a downward movement of the shaft 34 in the vicinity of the end of each protruding plate 28 on the roll gap side and immediately below the roll gap is provided with a fixing plate 35 of each scraper 25.
8 to rotate the scraper 25 about the rotation shaft 29 in the roll gap direction (direction of arrow A in FIG. 2),
While separating each scraping plate 27 from the rolls 4 and 5,
The upward movement of the shaft 34 causes the fixing plate 35 to move to the protruding plate 2.
8, a contacting / separating means composed of an air cylinder 36 for pressing each scraping plate 27 against the rolls 4, 5 by the pulling force of the spring 30 is provided.

A stock supply means is provided above the crushing chamber 22. That is, a stock supply cylinder 37 made of a transparent wall is provided in the center of the upper wall of the frame 2, and the stock supply cylinder 37 is divided into two by a partition plate 38 for supplying stock to two roll pairs. Chamber 39,3
9 is formed. The stock supply chambers 39, 39 are provided with stock level sensors 40a to 40f, respectively. The lower part of the stock supply chamber 39 is formed in a supply hopper 41, and two feed rolls 42, 43 driven by a motor (not shown) are provided in parallel at the lower end of the supply hopper 41. And one of the feed rolls 4
A feeder gate plate 44 is provided along the feeder gates 2 and 43, and the feeder gate plate 44 is connected to a feeder gate opening / closing cylinder 45.
It is provided so that it can be opened and closed by 6. A guide chute 47 is erected from the feed rolls 42 and 43. The lower end of the guide chute 47 faces above the gap between the high speed roll 5 and the low speed roll 4 in the grinding chamber 22.

The specific operation of the above embodiment will be described below.

At the start of operation, the feeder gate plate 44 is closed and the feed rolls 42 and 43 are stopped. The rolls 4 and 5 are supplied with air from an air source (not shown) to the air cylinder 16 serving as the roll gap adjusting means 17, and move upward, and the eccentric ring 13 is moved through the arm 15.
Is rotated to separate the low-speed roll 4 from the high-speed roll 5 side and the gap is widened. Further, air is supplied from the air source to the air cylinder 36 as the contacting / separating means, the shaft 34 moves downward, the fixing plate 35 engages with the projecting plates 28, 28, and the projecting plates 28, 28 are pushed down. , The rotating shaft 2 against the tensile force of the spring 30
The scrapers 25, 25 are rotated around 9, 29 in the roll gap direction (arrow A in FIG. 2) to separate the scraping plates 27, 27 from the rolls 4, 5. In such a state of the roll machine 1, the stock gradually accumulates from the supply hopper 41 to the stock supply chambers 39, 39. For example, when the stock is detected by the level sensor 40f, the feeder gate opening / closing cylinder 45 and the feeder. The feeder gate plate 44 is opened by the gate adjusting device 46, and the feed roll 42,
43 is driven, and the stock is supplied from the supply hopper 41 to the gap between the rolls 4 and 5 via the feed rolls 42 and 43 and the guide chute 47. At the same time, the air cylinder 16 as the roll gap adjusting means 17 moves downward to rotate the eccentric wheel 13 to move the low-speed roll 4 to the high-speed roll 5 side to form a normal crushing gap, The shaft 34 of the air cylinder 36 as a separating means moves upward, the fixing plate 35 separates from the projecting plate 28, and the scraper 25 rotates about the rotating shafts 29, 29 by the tensile force of the springs 30, 30. The scraping plates 27, 27 are pressed against the corresponding rolls 4, 5. The feed rolls 42, 43 are controlled so that the rotation speed changes according to the stock amount so that the stock amount in the stock supply chambers 39, 39 falls within the range of the level sensor 40a to the level sensor 40f. There is.

When the stock supply to the stock supply cylinder 37 is reduced and the stock amount in the stock supply chambers 39, 39 is smaller than the level sensor 40f, the feeder gate 44 is closed and the feed rolls 42, 43 are closed.
Is stopped, and the stock supply to the gap between the rolls 4 and 5 is stopped. Then, the air cylinder 16 moves upward to rotate the eccentric wheel 13, and the low speed roll 4 moves from the high speed roll 5 side.
To further widen the roll gap, and further, the shaft 34 of the air cylinder 36 as the contacting / separating means moves downward so that the fixing plate 35 engages with the projecting plates 28, 28 and pushes down the projecting plates 28, 28. Scraper 25,2
5 is rotated in the roll gap direction about the rotation shafts 29, 29 to separate the scraping plates 27, 27 from the rolls 4, 5. When the amount of stock in the stock supply chambers 39, 39 is detected again by the level sensor 40f, the feeder gate 44 and the feed rolls 42, 43 supply the stock to the roll gaps, and the rolls 4, 5 and the scraper 25, 25 returns to a position where the stock can be crushed.

In the above embodiment, the air cylinder is used as the contacting / separating means, but when a solenoid is used, the same operation as described above can be obtained with a small amount of energy.

[0017]

As described above, in the roll machine of the present invention, when the stock is not supplied to the roll, the roll machine is engaged with the scraper to separate the scraper from the roll and the stock is supplied to the roll. When the stock is being fed to the roll, the scraper removes the pulverized material that adheres to the roll when the stock is being fed to the roll. When the stock is not supplied to the roll, the scraper is reliably separated from the roll by the contacting / separating means, so that the roll and the scraper do not rub,
Heat generation and breakage of the roll and abrasion of the scraper do not occur.

[Brief description of drawings]

FIG. 1 is a side view showing a partial cross section of a roll machine.

FIG. 2 is an enlarged view of a contacting / separating means of the scraper.

[Explanation of symbols]

 1 Roll Machine 2 Frame 3 Partition Plate 4 Roll 5 Roll 6 Opening 7 Roll Cover 8 Side Wall 9 Roll In / Out Notch 10 Moving Bearing 11 Fixed Bearing 12 This Plate 13 Eccentric Wheel 14 Spindle 15 Arm 16 Air Cylinder 17 Roll Gap Adjusting Means 18 Eccentric wheel drive means for fine roll adjustment 19 Eccentric wheel for fine roll adjustment 20 Disc spring 21 Cover 22 Grinding chamber 23 Outflow hopper 24 Transport pipe 25 Scraper 26 Support 27 Scraping plate 28 Projecting plate 29 Rotating shaft 30 Spring 31 Connecting rod 32 Nut 33 Tension adjusting device 34 Shaft 35 Fixing plate 36 Air cylinder 37 Stock supply cylinder 38 Partition plate 39 Stock supply chamber 40 Level sensor 41 Supply hopper 42 Feed roll 43 Feed roll 44 Feeder gate plate 45 Feeder gate Closing cylinder 46 feeder gate adjustment device 47 guide chute

Claims (3)

[Claims] 1. A roll gap adjusting means for pulling one roll away from the other roll when stock is not supplied to the roll, and each of the rolls has a scraper for press-contacting a corresponding roll by press-contacting means. In a rotatably arranged roll machine, when stock is not supplied to the roll, it engages with the scraper to separate the scraper from the roll, and when stock is supplied to the roll. A roll machine provided with contacting / separating means for separating the scraper from the scraper and pressing the scraper against the roll by the pressing means. 2. The roll machine according to claim 1, wherein the contacting / separating means is an air cylinder. 3. The roll machine according to claim 1, wherein the contacting / separating means is a solenoid.