• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1. SYSTEM OF MANAGEMENT OF THE ROLL MILL, including a material consumption sensor, metering shi-bar for changing the supply of material with a servo actuator in the form of a power cylinder and a pneumatic machine for bringing together and separating the rolls, which differs in order to increase the reliability and quality of control , it is equipped with a three-way regulating pneumatic valve with a contacting element and a lever hinged on the frame, fixed with the other end on the body of the regulating pneumatic valve and connected to the servo drive rod and the through thrust with the damper, wherein the pneumatic actuator is connected to the regulating air valve and air cylinder for drawing together and disconnection of the rolls, and the flow sensor vtolnen material in the form of a probe on a simply supported spring-loaded lever with kontaktirukntsy zlementy regulating air valve. 2. The system according to claim. D, characterized in that it is provided with (L reinforcing valve and switch, installed between the servo-drive and the pneumatic cylinder for bringing together and separating the rolls. 3. The system according to claim 1, characterized in that the regulating pneumatic valve is made a type of a pusher l with the sprung boot, kon00 clocking with the membrane valve. with with
    公开号:SU1173937A3
    申请号:SU813362004
    申请日:1981-12-10
    公开日:1985-08-15
    发明作者:Винтелер Вернер；Этикер Ханс；Линцбергер Роберт；Кеттинг Лендерт
    申请人:Гебрюдер Бюлер А.Г. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the grinding technique in roller mills. A known roller mill control system includes a material flow sensor, a metering gate for changing the material supply with a servo actuator in the form of a power cylinder and a pneumatic cylinder for converging and separating CO rolls. However, this system does not ensure the reliability of grinding original products, since it is not possible to precisely adjust their supply. The purpose of the invention is to increase the reliability and quality of control. This object is achieved in that the control system of a roller mill, comprising material flow sensor metering slide valve for varying the feed servo of the actuator and a pneumatic cylinder for drawing together and disconnection of the rolls is provided with regulirunltsim three-way air valve with the contacting member and pivotably mounted on the machine frame arm, fixed at the other end on the body of the regulating pneumatic valve and connected pivotally to the mTOKtiM servo and through the cable with the gate, while the cepBo drive is connected to the pneumopr Ivod with a regulating pneumatic valve and a pneumatic cylinder for the rolls coming together and separating, and the material consumption sensor is designed as a probe supported on a spring-loaded lever in contact with the element of the regulating pneumatic valve. In addition, the roller mill control system is equipped with an amplifying valve and a switch installed between the servo drive and the pneumatic cylinder for bringing together and separating the rolls. The regulating pneumatic valve is designed as a pusher with a spring-loaded shoe in contact with the diaphragm valve. FIG. 1 shows schematically a roller mill; FIG. 2 shows an example of an implementation of a product supply control system; FIG. 3 shows an example of the implementation of a system for bringing together and separating automatic rolls; in fig. A is a complete control scheme of a roller mill with the regulation of the supply of the gross product together with an automatic approach and separation of the rolls in FIG. 5 - regulating pneumatic valve for converting a mechanical control signal into a pneumatic signal. FIG. 1 shows a roll mill with two pairs of mill rolls 1, 2 and 3, 4 in which the mill rolls are located across the entire width of the bed. 5, the entire mill is closed outside by a casing 6. The ground product is fed through a feed cylinder 7 in most cases made of organic glass expanding nutrient space 8, in the lower part of which there is a distribution; Roller 9, as well as feeding roller 10. The latter forms together with the metering gate 11 the mechanical part of the metering unit. Under the mill rolls 1, 2 and 3, 4, a funnel 12 is provided for discharging the milled product. In addition, in the casing 6, there is a window 13 for service on the supply side of the mill rollers 1, 2 and 3, 4, as well as a window 14 for controlling the quality and other properties of the milled product. In the feeding space 8 or above it, a probe 15 is placed, which can turn a spring-loaded lever 17 around the rotary bolt 16. The movement of the lever 17 is influenced by the amount of product supplied, the kinetic energy of the passing product, and the return spring 18. The lever 17 interacts directly with regulating pneumatic valve 19 or, respectively, with the contacting element of this valve. The mechanical signal from the lever 17 is converted into a pneumatic control signal in the regulating pneumatic valve 19. This signal can be used both to regulate the supply of the product, and to change the number of revolutions of the feed roller 10 or to change the metering clearance by moving the metering slide 11. Moreover, this signal can be used simultaneously and to automatically control the retracting and expanding of the mill rolls by means of non-cycloidal 20 and to register the appropriate position of the turn signals. This signal can also be used to install the mill rolls by means of an automatic adjusting device 21. The latter can be used in combination with an adjusting flywheel 22 or in the case of further automation with a control computer. The pneumatic cylinder 20 is connected via a piston rod 23 with mill rolls. FIG. 2 schematically shows the product feed control system. The left-half shows the feeding space 8, which is closed from the bottom by a distribution roller 9, feeding roller 10 and the metering gate 11. In the feeding space 8 a probe 15 is placed, supported through the beam 24 on the rotary bolt 16. The beam 24 is equipped with a lever 17 that interacts with the return valve the spring 18 and the contacting element 25 of the three-way regulating pneumatic valve 19. The latter is connected on the inlet side i26 to the pneumatic line 27 of the compressed air. The pneumatic line 28 connects the pneumatic valve 19 with a servo 29 which includes a piston 30. In addition, a piston rod 31 is provided, the end of which is fixed by a ball: a 32 on the lever arm 33, which in turn is fastened with the possibility of rotation around the hinge 34 with. frame 35. Pneumatic valve 19 is fixed at the other end of the lever arm 33 and follows, according to the law of chug, the movement of the piston rod 31 or, respectively, of the lever arm 33. In addition, a metering gate 11 is fixed on the latter through a connecting bar 36 with hinges 37 and 38. The metering gate can tilt around the rotating support 39, and depending on the position occupied by it at the moment, a certain gap is formed between it and the feed roller 10. All the system is supplied with pressure from the supply circuit 40. The compressed air supply can be additionally stopped using the manual switch 41, for example for maintenance purposes. The pressure in the system is maintained due to the supply circuit 40 constant and supplied (for example, 6 bar) through the pneumatic conduit 42 as a counterpressure to the side of the piston 30. Constant pressure 374 supplied through the pneumatic conduit 42 can also be used spring 43 or pressure and spring together. The use of the spring 43 has the advantage that in the event of a cut in the supply of compressed air, a reliable closure is ensured by the metering gate 11. As shown in FIG. In the example of the implementation of adjusting the supply of products with automatic approaching and separation of the rolls, the lever 17 is actuated by the probe 15. The lever 17 is affected by a return spring 18, which removes it from the contacting element 25 of the pneumatic valve 19 in the event that the supply of the product to the roller mill is stopped. The pneumatic valve 19 is connected to the amplifying valve 44. The pneumatic valve 19 converts the mechanical control signal from the lever 17 into a pneumatic signal. A pneumatic control sigal is created in proportion to the product entering the probe 15. In this case, the reinforcement valve 44 is installed in such a way that, at a certain pressure value of the pneumatic signal of the pneumatic line 28, it immediately transmits the total pressure of the network (for example, 6 bar) from. pneumatic piping into the pneumatic cylinder 20. If the specified limit value of the pneumatic signal for the reinforcing valve 44 has not yet been reached, no pressure is applied to the left surface of the piston 45 installed in the pneumatic cylinder 20, and the full pressure is supplied to the right surface of the piston 45 network so that the piston 45 remains in the extended position. If the pressure value is c. the air line 28 is above a predetermined limit value of 2 bar, then the total pressure of the network is supplied to the left surface of the piston 45, as a result of which it is pushed out. By means of a central control to dego valve 46, all rollers can be moved by means of a quick-acting deaerator 47. The piston 45 communicates through the piston current 23 with the moving roller 1.3 or corresponding support. However, the control of the product feed differs significantly from the approach and separation of the rolls. Feed control should be smooth, and the rolls should come closer and be separated suddenly, however (without a strong collision of the rolls with each other). FIG. Figure 4 shows the control system of a typical double-grinding mill mill. Four servo-cylinders are provided for bringing together and separating the rolls. The principle of operation of the roller mill control system is as follows. The gap between the mill rolls 1, 2 and 3, 4 is preset depending on the product to be ground using a flywheel. If no product is still being fed through the feed cylinder 7, the probe 15 is pressed by means of a return spring 18 upwards. The lever 17 is not in contact with the contacting element 25 of the pneumatic valve 19, so that the pressure in the pneumatic line 28 does not increase. The spring 43 or the pressure from the pneumatic pipe 42 moves the lever arm 33 against. clockwise and thereby metering slide 11 to the closed position. The mill rolls 1, 2 and 3, 4 do not feed the product. In the absence of a control signal in the pneumatic actuator 28 on the booster valve 44, there is no control pressure, so that the mill rolls 1, 2 and 3, 4 are operated by the cylinders 20 in the extended position. If the grinded product is fed through the feed cylinder 7 to the roller machine, the amount of movement of the passing product or the corresponding component of the weight affects the probe 15, which is pressed downwards. The lever 17 moves to the right, presses the contacting element 25 and generates this control signal. In air line 28, pressure increases, which, from the beginning, has no effect on signal transmission. However, as soon as the pressure increases to a predetermined limit value, the mill rolls approach each other. The probe 15 moves with pbwafOM 17, the element 25 is pressed fully against the pneumatic valve 19. The lever 17 is released, especially when the very sensitive diaphragm valve is used as the pneumatic valve 19, even with minimal movements the maximum control pressure in the pneumatic line 28. As a result, the piston rod 31 begins to move with the shoulder 33 and the pneumatic valve 19 already after a hundredth or tenth of a second, and the directly connected dosing gate starts to open. Whereby a product supplied to the mill rolls. Both cylinder 20 and servo 29 are embodied in the form of pneumatic servo cylinders, due to which the working energy is generated quickly. As for the further process, at the beginning of the product feed, the lever arm 33 makes a slight turning movement in a clockwise direction. At the same time, the contacting element 25 moves away from the lever 17. The return spring 18 is tensioned in proportion to the stroke of the lever 17. If only a small amount of product is supplied through the glass cylinder, a balance is created very quickly between the forces applied to the probe 15, at which the dosing gate 11 , shoulder 33 and pneumatic valve do not change their positions. However, at the same time, the lever 17 permanently interacts with the contacting element 25, which can be pushed by means of a spring into the pneumatic valve. In so doing, minimal movements are performed. However, they no longer act directly on the converted pneumatic signal. In this phase, the pneumatic valve occupies the so-called zero position, in which all inlets and outlets are closed. Due to this, the pressure value of the pneumatic signal obtained in the first phase remains unchanged, and the piston 30 remains rigidly clamped on both sides due to the stable pressure ratios. The dosing gate valve takes a rest position. IF the supply of the product through the glass cylinder 7 is increased or, for other reasons, the amount of product fed into the nutrient space is higher than the unloaded quantity 7
    the product dosing gap is cut, the lever 17 moves towards the element 25 or the pneumatic valve 19, respectively, the latter follows the curve 17 and at a given limit value again creates the corresponding control signal entering the pneumatic belt 28. However, at constant the oscillating power supply in the zero position can be alternated by separate periods of stable positions, in which the pneumatic valve is located anywhere in the lever arm 33. Due to this, the regulating system is able to create a very uniform regulating signal or, with varying power supply, have a signal from repeating stable phases.
    As can be seen from FIG. 4, the control pressure in the air line 48 can be used to optically display the corresponding roller positions. Using compressed air, it is possible to move, for example, the color mark behind the viewing glass 49, so that the approaching and separating the miller rolls are shown in corresponding colors, such as red and green. In addition (see Fig. 1), the pneumatic signal in the pneumatic conduit can be used to set the mill rolls. For example, the gap between the mill rolls can be
    when increasing the product flow, keep the pressure between the mill rolls constant by increasing. However, this gap can also be reduced or enlarged. A suitable tool 21 for adjusting the gap between the mill rolls can consist of a pneumatic cylinder or of other suitable mechanical or electrical elements that can be connected simultaneously to a device for remote control (for example, a computer). ),
    5 A regulating pneumatic valve is depicted in FIG. 5. The principle of operation is as follows. When pushing the push rod 50, the spring 51 pulls in and the spring-loaded shoe
    0 i52 pushes the ball to the seat of the auxiliary nozzle 53, after which the pressure in the chamber 54 of the diaphragm valve increases in proportion to the spring force of the spring or, respectively, 5 with the spring stroke. The attached power amplifier membrane presses -below and opens the ball valve 55 until the same pressure is created in chamber 56.
     When the tension of the pressure spring 51 is weakened, the auxiliary nozzle 53 opens, as a result, the pressure in the chamber 54 drops. Due to the pressure drop in the chamber 54, the membrane is pressed against the chamber 56 upwards, and the ball valve 57 opens.
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    权利要求:
    Claims (3)
    [1]
    1. ROLLER MANAGEMENT SYSTEM, including a material flow sensor, a metering spindle, a ber for changing the material feed with a servo-drive in the form of a power cylinder and a pneumatic cylinder for rapprochement and separation of the rolls, characterized in that, with the aim of increasing the reliability and quality of control, it is equipped a three-way control pneumatic valve with a contacting element and a lever pivotally mounted on the bed, fixed at the other end to the control pneumatic valve body and pivotally connected to the servo rod and Erez with damper rod, wherein the pneumatic actuator is connected to the regulating air valve and air cylinder to approach and separation rollers, and material flow sensor is designed as a probe, simply supported on a spring-loaded lever, the regulating member contacting the air valve.
    [2]
    2. The system of pop. D, distinguished by the fact that it is equipped with an amplification valve and a switch installed between the servo drive and the pneumatic cylinder for rapprochement and separation of the rolls.
    [3]
    3. Pop system. 1, characterized in that the control pneumatic valve is made in the form of a pusher with a spring-loaded shoe in contact with the membrane valve.
    SU .... 1173937
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH2796/80A|CH655251A5|1980-04-11|1980-04-11|MILLING ROLLER CHAIR WITH A PRODUCT FEED CONTROL DEVICE AND METHOD FOR OPERATING THE MILLING ROLLER CHAIR.|LTRP1211A| LT2539B|1980-04-11|1993-09-28|ROLLING MALUNA MANAGEMENT SYSTEM|
    LV931276A| LV5593A3|1980-04-11|1993-11-25|Valcu mill management system|
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