JP4599492B2 - Grain / seed / solid resin mill - Google Patents

Description

  The present invention relates to a cereal / seed / solid resin mill used for cereal milling, seed pulverization, and solid resin milling. More specifically, the present invention relates to grains, seeds, solid resin coarse powder or The present invention relates to a grain / seed / solid resin mill for adjusting the stock level of stock, which is a granular material, and supplying it evenly across the width of a grinding roll.

  Conventionally, the means for adjusting the general stock level of this kind of grain mill is the stock hopper that engages a lever mechanism that moves up and down by the flow of the stock in contact with the stock in the stock hopper. The lever mechanism is installed in the center, the vertical movement of the lever mechanism is transmitted to the hydraulic or pneumatic control mechanism, the control mechanism is activated to control the stock feed roll ON or OFF, and the opening and closing of the crushing roll gap is controlled. It was something to do.

Also, for example, it enables structurally simple product detection in the inflow path for feeding adjustment, detects the weight of the product to be supplied to the feeding cylinder of the cylinder mill, and calculates the result. A control signal can be input to the feeding device via a signal converter (see Patent Document 1), a fixed bearing on the opening side of the notch for rolls provided on the opposite side walls, and a moving bearing on the closing side In a milling roll machine in which at least one pair of rolls that are fixed to each other and mounted at high speeds on fixed bearings and at low speeds on mobile bearings and are rotated at opposite speeds are mounted horizontally. The movable bearing is divided into two parts, and one of the movable bearings is detachably attached to the fixed bearing side, and the other end is pivotally attached to the side wall via a roll opening / closing eccentric ring provided with a roll opening / closing eccentric ring driving means. And roll the other end This roll fine adjustment shaft is engaged with an adjustment shaft, and this roll fine adjustment shaft is connected to a roll fine adjustment eccentric wheel having a roll fine adjustment eccentric wheel driving means provided on the anti-fixed shaft side of the moving bearing via a disc spring ( Patent Document 2), a mechanical sensor and a product supply device, and the product supply device adjusts a supply gap or an adjustable drive means for a supply segment and a grinding roller close to each other. And a product automatic feeding device for a four-roller or eight-roller milling mill comprising a first mechanical signal transmitter for digital signals, comprising: A second mechanical signal transmitter for the analog signal, the speed of the supply roller or the position of the supply segment being adjustable via the analog signal, Septum those which are controllable via the digital signal (see Patent Document 3) are disclosed.
Japanese translation of PCT publication No. 2002-504854 (first page, FIG. 1) Japanese Patent No. 2788059 (first page, FIG. 1) Japanese Patent Publication No. 8-32309 (1st page, Fig. 1)

  However, in general means for adjusting the stock level, the vertical position of the float is displaced by the static pressure of the stock on the float and the dynamic pressure due to the flow of the stock. This method detects the stock level indirectly, but the movement of the float is greatly affected by changes in the bulk specific gravity, spatula angle, etc. associated with the stock change. In addition, since it is in the center of the stock hopper, there is a drawback that it is difficult to detect the risk of uneven supply over the entire width of the stock feed roll due to the fall of the stock level in the axial direction of the stock feed roll of the accumulated stock. In order to make the setting safe, the lower limit value must be increased, and the upper and lower limit values are naturally narrowed. In addition, there is a problem in terms of maintenance because it is buried in the center of the stock, and the hydraulic control mechanism is limited to simple operation despite its high cost and large size, and there is a limit to efficient operation. It was.

  Furthermore, it enables structurally simple product detection in the inflow path for feed adjustment, detects the weight of the product to be supplied to the feed cylinder of the cylinder mill, and converts the result into a signal. That is, a control signal can be input to the feeding device via a vessel, that is, a strain gauge is used as a sensor, a rod is fixed to the strain gauge, and this rod is placed at the point where the stock flows down on the upper center line in the stock hopper. It is mounted so as to be embedded in the stock, and the stock level is indirectly estimated from the pressure of the stock acting on the rod to control the acceleration / deceleration of the feed roll and separation of the grinding roll. It is greatly affected by changes in bulk specific gravity, spatula angle, etc. due to changes in the roll width, and the roll width is not uniform due to detection on the center line of the stock hopper. Fear difficult to detect the, there is likely to be less operating range of the above as well as grinder, in which there are problems also on maintenance.

  Furthermore, the fixed bearing is fixed to the opening side of the roll entrance notch provided on the opposite side wall, and the moving bearing is fixed to the closing side, and the high speed roll is fixed to the fixed bearing, and the low speed roll is set to the moving bearing. In a milling roll machine in which at least one pair of rolls that are attached to each other and rotate opposite to each other are horizontally mounted, each moving bearing is divided into two parts, and one of them is detachable to the fixed bearing side, and the other Is pivotally attached to the side wall via a roll opening / closing eccentric wheel having a roll opening / closing eccentric wheel driving means, and the other end is engaged with a roll fine adjustment shaft. , Which is connected to a roll fine adjustment eccentric wheel having a roll fine adjustment eccentric ring driving means provided on the side of the movable bearing opposite to the fixed shaft via a disc spring, that is, instead of the float, the inlet cylinder of the stock hopper Reflective photoelectric on the outer wall Alternatively, six electrostatic capacity type sensors are arranged in a column along the center line of the inlet cylinder at appropriate intervals, and each time the stock level in the hopper approaches each sensor without contact with the stock, the signal is detected. The system is connected to the microcomputer collectively, and the output signal of the microcomputer controls the acceleration / deceleration of the stock feed roll and the separation of the grinding roll. A method for detecting changes in electrostatic capacity accompanying changes in the stock level through the outer wall of the stock hopper Therefore, the outer wall becomes a barrier and it is necessary to use highly sensitive and expensive sensors and amplifiers. In addition, it takes a lot of time to combine six sensors with a personal computer and process data, and it becomes an expensive method. If the stock can only detect the sensor head placement range along the center line of the inlet cylinder and the stock tilts downward relative to the wall of the inlet cylinder, the inlet cylinder Even if there is enough stock inside, there is a risk that it will be detected if there is little stock, as in the previous case, it is difficult to detect the possibility of uneven supply of the roll as a whole, and furthermore, the height of the inlet cylinder and the stock level within the volume The operation control is based on the above measurement, and there are many start and stop of the pulverizer, which may cause inefficient operation.

  In addition, it comprises a mechanical sensor and a product supply device, the product supply device for adjusting the supply gap or an adjustable drive means for the supply segment and for bringing the grinding roller close to and away from each other In a product automatic feeding apparatus for a four-roller type or eight-roller type milling mill, comprising: a first mechanical signal transmitter for digital signals; and an analog signal A second mechanical signal transmitter, the rotation speed of the supply roller or the position of the supply segment can be adjusted via an analog signal, and the mutual approach and separation of the rollers can be controlled via a digital signal In other words, the amount of operation of the aforementioned lever mechanism of the float is electrically detected instead of the hydraulic control mechanism, acceleration / deceleration control of the feed roll mechanism, But performs a focus control, in which the aforementioned problems of the float can not be solved.

  In view of the above-mentioned problems, the present invention is a result of earnest study for the purpose of efficiently feeding even a poorly flowable stock uniformly over the entire roll width and pulverizing more efficiently with normal stock. The grain / seed / solid resin mill according to Item 1 includes a stock hopper with an inlet cylinder, a stock feed roll for transferring stock of the stock hopper, and a feeder gate for adjusting a flow of the stock transferred by the stock feed roll. Level sensor that measures the stock level of the stock hopper stock in a grain / seed / solid resin mill equipped with a feeder gate opening / closing means for opening and closing and a pair of grinding rolls for grinding the stock that has passed through the feeder gate To the stock near the upper part of the feeder gate of the stock hopper. Two load cells to be measured by touching are mounted, and the measured values of the load cell and the level sensor are input to the control means provided with an amplifier, and the rotation speed of the stock feed roll is determined by the rotation speed control program set by the control means. The feeder gate opening / closing means controls the interval between the feeder gates and the separation of the pair of grinding rolls.

  Further, the grain / seed / solid resin mill according to claim 2 is the grain / seed / solid resin mill according to claim 1, wherein the stock is measured with a level sensor or a load cell, and the measured value is measured. Is calculated by the control means via the amplifier and converted into a stepwise rotational speed control output signal, and the converted output signal is input to the speed controller of the geared motor for stock feed roll, and the rotation of the stock feed roll according to the stock level Is to control.

  Furthermore, the grain / seed / solid resin mill according to claim 3 is the grain / seed / solid resin mill according to claim 1, wherein the control means has a measured value of the stock level by the level sensor. Stock when the set lower limit level is reached and / or the load of the load cell reaches the set lower limit level, or when one of the two load cells measures zero stock load due to uneven distribution of stock In addition to stopping the rotation of the feed roll, the feeder gate opening / closing means is operated to close the interval between the feeder gates, and at the same time the pair of grinding rolls are separated.

  Further, the grain / seed / solid resin mill according to claim 4 is the grain / seed / solid resin mill according to claim 1, wherein the control means is a level sensor between preset upper and lower limit values. Alternatively, when the measurement value at the load cell fluctuates up and down, the rotation speed of the stock feed roll is increased or decreased by a rotation speed control signal that is set stepwise according to the stock level.

  Furthermore, the grain / seed / solid resin mill according to claim 5 is the grain / seed / solid resin mill according to claim 1, wherein the control means is operated with the stock feed roll operating at the maximum rotational speed. Regardless of the level sensor or load cell, when the measured value reaches the set upper limit level, the feeder gate opening / closing means is actuated, the feeder gate interval is increased to the maximum width, the stock is discharged, and the stock overflows. It is to prevent.

  The grain / seed / solid resin mill according to claim 6 adjusts a stock hopper with an inlet cylinder, a stock feed roll for transferring stock of the stock hopper, and a flow of the stock transferred by the stock feed roll. In a grain / seed / solid resin mill equipped with feeder gate opening / closing means for opening / closing the feeder gate and a pair of grinding rolls for grinding the stock that has passed through the feeder gate, the stock hopper is brought into contact with the stock Two load cells that measure the load are installed in the horizontal direction, and the measured value of the load cell is input to the control means equipped with an amplifier. The rotation speed of the stock feed roll and the feeder gate are set by the rotation speed control program set by the control means. The feeder gate through which the stock passes by the opening and closing means It is intended to control the septum and a pair of grinding rolls disengaging.

  Further, the grain / seed / solid resin mill according to claim 7 is the grain / seed / solid resin mill according to claim 6, wherein the load of the stock is measured by the load cell, and the measured value is obtained. It is converted into a stepwise rotational speed control output signal by a control means through an amplifier, and the converted output signal is input to a speed controller of a stock feed roll geared motor to rotate the stock feed roll in accordance with the stock level. It is something to control.

  Furthermore, the grain / seed / solid resin mill according to claim 8 is the grain / seed / solid resin mill according to claim 6, wherein the control means has a measured value of the stock load in the load cell. When the set lower limit level is reached, or when either the left or right load cell stops measuring the stock load, the rotation of the stock feed roll is stopped and the feeder gate opening / closing means is activated to close the feeder gate interval. At the same time, the pair of grinding rolls are separated.

  Furthermore, the grain / seed / solid resin mill according to claim 9 is the grain / seed / solid resin mill according to claim 6, wherein the control means is a lower limit in which loads of two load cells are set. When the level rises, the stock feeder gate opening / closing means is actuated to separate the feeder gate interval, rotate the stock feed roll, and simultaneously return the interval between the pair of pulverization rolls to the pulverization position.

  Furthermore, the grain / seed / solid resin mill according to claim 10 is the grain / seed / solid resin mill according to claim 6, wherein the control means sets the measured value in the load cell in advance. When it fluctuates up and down between the lower limit values, the rotation speed of the stock feed roll is increased or decreased by a rotation speed control signal that is set stepwise according to the stock level in advance.

  Furthermore, the grain / seed / solid resin mill according to claim 11 is the grain / seed / solid resin mill according to claim 6, wherein the control means operates at a maximum rotation speed of the stock feed roll. However, when the measured value in the load cell reaches the set upper limit level, the feeder gate opening / closing means is operated to keep the feeder gate interval to the maximum width and discharge the stock to prevent stock overflow. is there.

  The grain / seed / solid resin mill according to the present invention is capable of accurately and directly detecting the stock level in the stock hopper flowing into the pulverizing roll directly and always accurately using both the non-contact level sensor and the load cell, or the load cell alone. By controlling the rotation speed of the stock feed roll, the distance between the feeder gates and the separation of the grinding rolls, it is possible to continuously supply the stock to the grinding rolls in full width, and especially between the preset upper and lower limit values of the stock. Since the lower limit value can be set low, it is possible to improve the operating rate by increasing the operating range of the pulverizer and to supply the stock uniformly. This leads to an improvement in the yield of good quality milling, and is an extremely practical invention.

The present invention relates to a cereal / seed / solid resin mill used for cereal milling, seed pulverization, and solid resin milling, and more specifically, cereal milling, seed pulverization, and solid resin milling powder flowed into a stock hopper. The present invention relates to a cereal / seed / solid resin mill for adjusting the stock level of a stock which is a body or a granule and supplying it evenly across the width of a pulverizing roll. The solid resin mill includes a stock hopper 1 for storing stock A, which is powder or granules disposed above with an inlet cylinder 1a, and a stock feed roll 2 for transferring stock A of the stock hopper 1 downward. A feeder gate opening and closing means 4 for opening and closing a feeder gate 3 for adjusting the flow of the stock A transferred by the stock feed roll 2, and the feeder gate In a grain / seed / solid resin mill equipped with a pair of pulverizing rolls 5 for pulverizing the stock A that has passed through the stock A, the stock level Aa of the stock A is measured in a non-contact manner at the top of the inlet cylinder 1a of the stock hopper 1. with mounting the reflection type ultrasonic level sensor 6 for the upper stock is contacted to a chevron the anterior end of measuring sensing pressure change width tactile plate horizontally load cell 7 having a feeder gate 3 stock hopper 1 Are mounted with a considerable interval between them, and the measured values of the load cell 7 and the level sensor 6 are input to the control means 9 having an amplifier 8 interposed therebetween, and set in advance by the control means 9. Between the rotation speed of the stock feed roll 2 and the feeder gate 3 through which the stock A passes by the feeder gate opening / closing means 4 It is intended to control the disengaging of said pair of grinding rolls 5 and.

  Furthermore, the grain / seed / solid resin mill according to claim 2 is the grain / seed / solid resin mill according to claim 1, wherein the level sensor 6 or the load cell 7 measures the stock A, The measured value is calculated by the control means 9 via the amplifier 8 and converted into a stepwise rotational speed control output signal, and the converted output signal is input to the speed controller 2b of the stock feed roll geared motor 2a. The rotation of the stock feed roll is controlled according to the stock level Aa.

  Furthermore, the grain / seed / solid resin mill according to claim 3 is the grain / seed / solid resin mill according to claim 1, wherein the control means 9 is a stock level Aa at the level sensor 6. When the measured value of the load cell 7 reaches the set lower limit level and / or the load of the load cell 7 reaches the set lower limit level, or one of the two load cells 2 is a stock load due to the uneven distribution of stock. When zero is measured, the rotation of the stock feed roll is stopped, the feeder gate opening / closing means 4 is operated to close the interval between the feeder gates 3 and the pair of pulverizing rolls 5 are separated at the same time.

  Furthermore, the grain / seed / solid resin mill according to claim 4 is the grain / seed / solid resin mill according to claim 1, wherein the control means 9 is between upper and lower limit values set in advance. When the measurement value at the level sensor 6 or the load cell 7 fluctuates up and down, the rotation speed of the stock feed roll 2 is increased or decreased by a rotation speed control signal set in a stepwise manner according to the stock level Aa.

  Furthermore, the grain / seed / solid resin mill according to claim 5 is the grain / seed / solid resin mill according to claim 1, wherein the control means 9 is configured such that the stock feed roll 2 has a maximum rotational speed. When the value measured by the level sensor 6 or the load cell 7 reaches the set upper limit level regardless of the operation at, the feeder gate opening / closing means 4 is actuated so that the distance between the feeder gates 3 is increased to the maximum width. Is to prevent stock overflow.

The grain / seed / solid resin mill according to claim 6 includes a stock hopper 1 with an inlet cylinder 1a for storing stock A, which is a powder or granule disposed above, and the stock hopper 1 A stock feed roll 2 for transferring the stock A downward, a feeder gate opening / closing means 4 for opening and closing a feeder gate 3 for adjusting the flow of the stock A transferred by the stock feed roll 2, and the feeder gate 3. in mill grain-seed-solid resin and a pair of grinding rolls 5 of grinding stock a, the contacting above the stock a feeder gate 3 stock hopper 1 to the distal end side to measure the stock load the load cell 7 having a chevron sensing pressure change width haptic plate has a considerable distance in the horizontal direction two mounted, the該夫s load cell 7 The measured value is input to the control means 9 having an amplifier 8 interposed therebetween, and the rotation speed of the stock feed roll 2 and the feeder gate opening / closing means 4 are used to store the stock according to the rotation speed control signal set in advance by the control means 9. The interval between the feeder gates 3 that pass through and the separation of the pair of grinding rolls 5 are controlled.

  Further, the grain / seed / solid resin mill according to claim 7 is the grain / seed / solid resin mill according to claim 6, wherein the load cell 7 measures the load of the stock A, and the measurement is performed. The measured value is converted into a stepwise rotational speed control output signal by the control means 9 via the amplifier 8, and the converted output signal is input to the speed controller 2b of the stock feed roll geared motor 2a. The rotation of the stock feed roll 2 according to the control is controlled.

  Further, the grain / seed / solid resin mill according to claim 8 is the grain / seed / solid resin mill according to claim 6, wherein the control means 9 is a load of the stock A in the load cell 7. When the measured value reaches the set lower limit level, or when the left or right load cell 7 stops measuring the stock load, the rotation of the stock feed roll 2 is stopped and the feeder gate opening / closing means 4 is operated. Thus, the gap between the feeder gates 3 is closed, and the pair of pulverizing rolls 5 are separated at the same time.

  Furthermore, the grain / seed / solid resin mill according to claim 9 is the grain / seed / solid resin mill according to claim 6, wherein the control means 9 sets the load of the two load cells 7. When rising from the lower limit level, the stock feeder gate opening / closing means 4 is actuated to separate the feeder gate 3 and rotate the stock feed roll 2 and simultaneously return the gap between the pair of grinding rolls 5 to the grinding position. Is.

  Furthermore, the grain / seed / solid resin mill according to claim 10 is the grain / seed / solid resin mill according to claim 6, wherein the control means 9 has previously measured values in the load cell 7. When it fluctuates up and down between the upper and lower limit values to be set, the rotation speed of the stock feed roll 2 is increased or decreased by a rotation speed control signal that is set stepwise according to the stock level Aa in advance.

  Furthermore, the grain / seed / solid resin mill according to claim 11 is the grain / seed / solid resin mill according to claim 6, wherein the control means 9 is configured such that the stock feed roll 2 has a maximum rotational speed. When the measured value in the load cell 7 reaches the set upper limit level in spite of the operation at, the feeder gate opening / closing means 4 is operated to separate the feeder gate 3 to the maximum width and discharge the stock A. It is intended to prevent overflow.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a grain / seed / solid resin mill according to the present invention will be described in detail with reference to the drawings. FIG. 1 outlines an embodiment of a grain / seed / solid resin mill according to the present invention. FIG. 2 is a cross-sectional view of an essential part for explaining an outline of an embodiment of a grain / seed / solid resin mill according to the present invention, and FIG. It is a general | schematic front view for demonstrating the outline | summary of the Example of the mill of solid resin.

  That is, the grain / seed / solid resin milling machine of the present invention is symmetrically divided into two sets of grain / seed / solid resin milling machines as shown in FIG. Each main body casing is provided with a stock hopper 1 provided with an inlet cylinder 1a on the upper side, a product discharge hopper on the lower side, a stock feed roll 2, a feeder gate opening / closing means 4, and a pair of pulverizing rolls, which will be described later. 5 and the like, and the following detailed description will be made only with a grain, seed and solid resin mill on one side, but it has a pair structure.

  As shown in FIG. 2, the stock hopper 1 is disposed above the grain / seed / solid resin mill, and is a raw material grain milling, seed grinding, solid resin milling powder or granule. The stock A is stored in the upper part, and is provided with an inlet cylinder 1a in the upper part and connected to a supply system 1c such as a pipe for supplying the stock A from the raw material supply source. The feeder gate opening / closing means 4 is provided, and the upper part of the stock feed roll 2 and the feeder gate opening / closing means 4 is provided with an inclined plate 1b which is narrowed downward so that all the stock A passes through the feeder gate 3. The upper side is provided with a transparent window through which the stock level Aa can be seen from the outside.

  Next, in the embodiment, the stock feed roll 2 has two rolls arranged in an obliquely downward direction at a lower opening of the stock hopper 1 and rotated in the same direction. The stock A is fed into a feeder gate 3 to be described later and transferred downward. Each stock feed roll 2 is mechanically connected to a variable speed stock feed roll geared motor 2a, and the stock feed roll geared motor 2a. Is provided with a speed controller 2b, which is driven by a signal sent from the control means 9 described later to the speed controller 2b.

  Next, the feeder gate opening / closing means 4 adjusts the flow of the stock A transferred by the stock feed roll 2, and the feeder gate opening / closing lever 4b pivotally attached by the pivot pin 4a is used as the feeder gate opening / closing actuator 4c. The feeder gate opening / closing lever 4b is pivoted by moving the feeder gate opening / closing actuator 4c forward and backward, and the distance between the feeder gate 3 between the feeder gate opening / closing lever 4b and the stock feed roll 2 is mechanically connected. Is to open, close and adjust.

  Further, the pair of pulverizing rolls 5 are horizontally arranged so as to be separable in the horizontal direction, that is, at least one of the pulverizing rolls 5 is mechanically connected to the pulverizing roll separating actuator 5a and moved in the horizontal direction so as to be separated. The crushing roll gap adjusting means 5b for adjusting the gap between the pair of crushing rolls 5 is provided, and the pair of crushing rolls 5 pass through the feeder gate 3 by rotating relatively in the middle direction. The stock A flowing down is pulverized.

Furthermore, the reflection type ultrasonic level sensor 6 measures the stock level Aa of the inlet cylinder 1a and the stock A of the stock hopper 1 in a non-contact manner, and has a mounting hole on the top surface of the inlet cylinder 1a of the stock hopper 1. The sensor head is mounted in the mounting hole with the sensor head facing downward, and is connected to the control means 9 via an amplifier 8 described later.

The load cell 7 is provided with a mountain-shaped detection pressure amplification tactile plate at the tip side, and is measured by contacting the stock A in the vicinity of the upper portion of the feeder gate 3 of the stock hopper 1. At least two are mounted in the horizontal direction above the whole inclined plate 1c, and the inclination of the stock A can be measured by mounting a plurality of the plates in the horizontal direction in contact with the stock A.

  Next, the control means 9 uses a sequencer and is connected to the level sensor 6 and the load cell 7 through an amplifier 8, and the measured value of the stock A at the level sensor 6 and the load cell 7 is measured. The signal is amplified by an amplifier 8 and input.

  The control means 9 is electrically connected to a speed controller 2b of a mechanically connected stock feed roll geared motor 2a for rotating the stock feed roll 2, and a rotational speed control program set in a stepwise manner in advance. Thus, the rotational speed of the stock feed roll 2 is controlled.

  Further, the control means 9 is electrically connected to a feeder gate opening / closing actuator 4c for pivoting a feeder gate opening / closing lever 4b of the feeder gate opening / closing means 4 provided for adjusting the distance between the feeder gates 3. The gate opening / closing actuator 4c is moved forward and backward to pivot the feeder gate opening / closing lever 4b, thereby opening / closing and adjusting the interval between the feeder gates 3 and adjusting the flow of the stock A flowing into the feeder gate 3.

Further, the control means 9 controls separation of the pair of pulverizing rolls 5, and one of the pair of pulverizing rolls 5 is mechanically connected to the pulverizing roll separation actuator 5a, and the pulverizing roll separation actuator 5a. Is electrically connected to the control means 9 and is movable by a signal transmitted from the reflective ultrasonic level sensor 6 or the load cell 7.

  The level sensor 6 uses a reflection type ultrasonic level sensor. As is well known, the reflection type ultrasonic level sensor 6 emits an ultrasonic wave from the level sensor head and is reflected by the surface of the stock A. The ultrasonic wave is received, and the stock level Aa is accurately detected by the time difference.

  Next, the measured value of the stock A in the level sensor 6 or the load cell 7 is amplified by the amplifier 8 and converted into a stepwise rotational speed control output signal by the control means 9 using a sequencer, and the converted output signal is stored in the stock. This is input to the speed controller 2b of the feed roll geared motor 2a, and the rotation of the stock feed roll 2 corresponding to the stock A is controlled.

  Next, when the measured value of the stock A at the level sensor 6 or the load cell 7 reaches the set lower limit level, that is, when the stock A cannot be supplied to the full width of the pair of grinding rolls 5, the control is performed. The means 9 stops the rotation of the stock feed roll 2, operates the feeder gate opening / closing means 4 to close the interval between the feeder gates 3, and simultaneously separates the pair of grinding rolls 5.

  Furthermore, the control means 9 determines the rotation speed of the stock feed roll 2 set in a stepwise manner when the measured value of the stock A at the level sensor 6 or the load cell 7 fluctuates up and down between preset upper and lower limit values. Increase or decrease.

  Then, the control means 9 operates the feeder gate opening / closing means 4 when the measured value of the stock A at the level sensor 6 or the load cell 7 reaches the set upper limit level regardless of the maximum rotation speed operation of the stock feed roll 2. Thus, the feeder gate 3 is spaced apart to the maximum width to discharge the stock A, thereby preventing the stock A from overflowing.

  Further, the level sensor 6 has a guarantee function against temperature change, and is provided with an air gun 6a that removes a minute amount of dust adhering to the level sensor 6 by periodically blowing air.

  In the next embodiment, the level sensor 6 is eliminated from the previous embodiment, and at least two load cells 7 are measured in contact with the stock A above the feeder gate 3 of the stock hopper 1 in the horizontal direction. The load of stock A is measured by attaching one.

  That is, the measured value of each load cell 7 is input to the control means 9 having an amplifier 8 interposed therebetween, and the rotational speed of the stock feed roll 2 and the feeder gate are determined by a rotational speed control program set in advance by the control means 9. The opening / closing means 4 controls the interval between the feeder gates 3 through which the stock A passes and the separation of the pair of grinding rolls 5.

  Further, the load of the stock A is measured by the load cell 7, and the measured value is converted into a stepwise rotational speed control output signal by the control means 9 through the amplifier 8, and the converted output signal is converted to the stock feed roll geared motor 2a. The speed controller 2b is used to control the rotation of the stock feed roll 2 according to the stock.

  Furthermore, the control means 9 stops the rotation of the stock feed roll 2 when the measured value of the load of the stock A in the load cell 7 reaches the set lower limit level, or when either one does not measure the stock load. At the same time, the foot gate opening / closing means 4 is operated to close the distance between the foot gates 3 and at the same time the pair of pulverizing rolls 5 are separated.

  Then, when the load of the load cell 7 rises from the set lower limit level, the control means 9 operates the stock feeder gate opening / closing means 4 to separate the interval between the feeder gates 3 and rotates the stock feed roll 2 at the same time. The distance between the pair of grinding rolls 5 is returned to the grinding position.

  Next, when the measured value in the load cell 7 fluctuates up and down between the preset upper and lower limit values, the control means 9 sets the number of revolutions of the stock feed roll 2 with the revolution number signal set in advance according to the stock load. It will increase or decrease the speed.

  Furthermore, the control means 9 operates the feeder gate opening / closing means 4 to activate the feeder gate 3 when the measured value in the load cell 7 reaches the set upper limit level regardless of the maximum rotational speed operation of the stock feed roll 2. The interval is set to the maximum width to eliminate the stock A and prevent the stock A from overflowing.

  The grain / seed / solid resin mill according to the present invention is suitable for providing a wide range of raw material stock and efficiently providing high quality powder at low cost.

FIG. 1 is a schematic side view for explaining an outline of an embodiment of a grain / seed / solid resin mill according to the present invention. FIG. 2 is a cross-sectional view of an essential part for explaining the outline of an embodiment of the grain / seed / solid resin mill according to the present invention. FIG. 3 is a schematic front view for explaining the outline of the embodiment of the grain / seed / solid resin mill according to the present invention.

A stock Aa stock level 1 stock hopper 1a inlet tube 1b supply system 1c inclined plate 2 stock feed roll 2a geared motor for stock feed roll 2b speed controller 3 feeder gate 4 feeder gate opening / closing means 4a pivot pin 4b feeder gate opening / closing lever 4c Feeder gate opening / closing actuator 5 Grinding roll 5a Grinding roll separation actuator 6 Reflective ultrasonic level sensor 6a Air gun 7 Load cell 8 Amplifier 9 Control means

Claims (11)

A stock hopper with an inlet cylinder for storing stock, which is powder or granules disposed above, a stock feed roll for transporting the stock of the stock hopper downward, and a flow of stock transported by the stock feed roll In a grain / seed / solid resin mill comprising a feeder gate opening / closing means for opening / closing a feeder gate to be adjusted and a pair of pulverizing rolls for pulverizing the stock that has passed through the feeder gate, an inlet cylinder of the stock hopper A reflection-type ultrasonic level sensor that measures the stock level of the stock in a non-contact manner is attached to the top, and a chevron-shaped detection pressure-amplifying tactile plate is attached to the tip side that measures by contacting the stock above the feeder gate of the stock hopper. the load cell with two mounted a considerable distance in the horizontal direction,該夫s The measured values of the load cell and the level sensor are input and calculated to a control means provided with an amplifier, and the stock feed roll speed and the feeder gate opening / closing means are stocked by a rotational speed control program set in advance by the control means. A grain, seed, and solid resin milling machine that controls the interval between the feeder gates through which the powder passes and the separation of the pair of grinding rolls.   The stock is measured by the level sensor or the load cell, the measured value is calculated by a control means via an amplifier and converted into a stepwise rotational speed control output signal, and the converted output signal is converted into a stock feed roll geared motor. The grain / seed / solid resin milling machine according to claim 1, wherein the mill is input to a speed controller to control rotation of a stock feed roll according to the stock level.   The control means has two load cells when the measured value of the stock level at the level sensor reaches the set lower limit level and / or when the load of the load cell reaches the set lower limit level or due to the uneven distribution of stock. When one of the two measures zero stock load, the rotation of the stock feed roll is stopped, the feeder gate opening / closing means is operated to close the interval between the feeder gates, and the pair of grinding rolls are separated at the same time. The grain, seed, and solid resin milling machine according to claim 1.   When the measured value at the level sensor or load cell fluctuates up and down between the preset upper and lower limit values, the control means controls the rotation speed of the stock feed roll by a rotation speed control signal set in advance according to the stock level. The grain / seed / solid resin milling machine according to claim 1, wherein the mill is accelerated or decelerated.   When the stock feed roll reaches the upper limit level set by the level sensor or the load cell regardless of the operation at the maximum rotation speed, the control means operates the feeder gate opening / closing means to adjust the feeder gate interval. The grain / seed / solid resin milling machine according to claim 1, wherein the stock is discharged at a maximum distance to prevent overflow of the stock. A stock hopper with an inlet cylinder for storing stock, which is powder or granules disposed above, a stock feed roll for transporting the stock of the stock hopper downward, and a flow of stock transported by the stock feed roll In a grain / seed / solid resin mill comprising a feeder gate opening / closing means for opening / closing a feeder gate to be adjusted and a pair of grinding rolls for grinding the stock that has passed through the feeder gate, the feeder gate of the stock hopper Two load cells equipped with a mountain-shaped detection pressure amplification tactile plate are mounted on the front end side in contact with the upper stock with a considerable interval in the tip side, and the measured values of each load cell are amplified. Rotational speed control signal set in advance by the control means. More speed and said feeder gating mill grain-seed-solid resin, characterized in that to control spacing of feeder gates stock passes between the disengaging of said pair of grinding rolls by means of the stock feed roll.   The load of stock is measured by the load cell, the measured value is converted into a stepwise rotational speed control output signal by a control means via an amplifier, and the converted output signal is converted into a speed controller for a geared motor for stock feed rolls. The grain / seed / solid resin milling machine according to claim 6, wherein the rotation of the stock feed roll is controlled in accordance with the stock level.   The control means stops the rotation of the stock feed roll when the measured value of the stock load at the load cell reaches a set lower limit level, or when either the left or right load cell stops measuring the stock load, 7. The grain / seed / solid resin milling machine according to claim 6, wherein the feeder gate opening / closing means is operated to close the gap between the feeder gates, and at the same time, the pair of grinding rolls are separated.   When the two loads of the load cell have risen from the set lower limit level, the control means operates the stock feeder gate opening / closing means to separate the feeder gate interval and rotate the stock feed roll at the same time as a pair of grinding rolls. The grain / seed / solid resin milling machine according to claim 6, wherein the interval is returned to the grinding position.   When the measured value at the load cell fluctuates up and down between preset upper and lower limit values, the control means increases or decreases the rotation speed of the stock feed roll by a rotation speed control signal that is set stepwise according to the stock level. The grain / seed / solid resin mill according to claim 6.   The control means operates the feeder gate opening / closing means when the stock feed roll reaches the upper limit level set in the load cell regardless of the operation at the maximum rotation speed, so that the distance between the feeder gates is maximized. 7. The grain / seed / solid resin mill according to claim 6, wherein the stock is discharged to prevent stock overflow.

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