JPH0528431U - Vertical mill guide device - Google Patents

Abstract

(57) [Summary] [Purpose] Automatic adjustment of the downstream end position of the guide plate in the direction of rotation of the crushing table according to the movement of the pressure contact of the crushing roller without stopping the operation of the crushing equipment including the vertical mill. Provided is a vertical mill guide device that can be used. The upstream end 16a is pivotally attached to a support 17 attached to the casing 1 on the upstream side of each crushing roller 6 in the rotation direction A of the crushing table 2, and the downstream end 16b is rotated in the radial direction of the crushing table 2. A movable guide plate 16 is disposed, and a hydraulic cylinder device 18 (driving device) that is expandable and contractable in the radial direction of the crushing table 2 is connected to the downstream end 16b of the guide plate 16. An angle detection sensor for detecting the pressing angle of the crushing roller 6 is connected to the pivot shaft of the crushing roller 6, and the downstream end 16b of the guide plate 16 is positioned at the pressure contact 9 of the crushing roller 6 based on the detection signal of the angle detecting sensor.
A control device for controlling the hydraulic cylinder device 18 so as to be positioned on the track 9 ′ is provided at a required position outside the casing 1.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vertical mill guide device.

[0002]

[Prior Art]

 The vertical mill is a device for pulverizing a lump crushed material such as a cement raw material into a granular or powdery state, and as shown in FIGS. 5 and 6, the crushed powder supplied to the rotatable crushing table 2 in the casing 1 is crushed. The material 3 is supported by a crushing groove 4 formed in the circumferential direction of the upper surface of the crushing table 2 and a bracket 5 connected to a reduction device (not shown) so as to follow the crushing table 2 while being pressed against the crushing groove 4. The powder is pulverized between a plurality of rotating pulverizing rollers 6, and the fine powder 3'obtained by the pulverizing is blown up by carrier air 8 from a large number of air ports 7 which are annularly connected around the pulverizing table 2. The fine powder 3 ′ is conveyed to the upper side of the casing 1, and the fine powder 3 ′ conveyed to the upper side of the casing 1 is passed through a separator (not shown) to be classified, and then can be carried out to the outside of the casing 1.

In the vertical mill as described above, the crushing material 3 in the crushing groove 4 is sufficiently crushed on the upstream side of each crushing roller 6 in the rotation direction of each crushing table 2 (direction indicated by an arrow A in FIG. 6). The guide plate 10 is installed so as not to be guided to the air port 7 before it is guided and to reliably guide the crushed material 3 on the track 9'of the pressure contact 9 of the crushing roller 6 with respect to the crushing table 2. There is one in which only the crushed material 3 is guided to the air port 7 through the gap between the lower end of the guide plate 10 and the upper surface of the crushing groove 4.

However, since the pressure contact 9 of the crushing roller 6 moves to the outside in the radial direction of the crushing table 2 as the crushing roller 6 wears, the pressure contact 9 of the crushing roller 6 moves in accordance with the movement of the pressure contact 9. It was necessary to change the positional relationship of the plate 10.

Therefore, conventionally, the support 11 supporting the guide plate 10 is fastened to the fixture 12 fixed to the casing 1 with the bolt 13, and the bolt hole 14 of the fixture 12 is fixed to the crushing table 2. As the elongated hole extending in the radial direction, the position of the guide plate 10 can be adjusted in the radial direction of the crushing table 2.

[0006]

[Problems to be solved by the device]

 However, in the conventional structure as described above, the operation of the vertical mill must be stopped in order to adjust the position of the guide plate 10, and the operation of the entire crushing equipment including the vertical mill must be stopped. There was a problem that I had to do it.

The present invention has been made in view of the above-mentioned circumstances, and the downstream end position of the guide plate in the rotation direction of the crushing table is set to the crushing roller position without stopping the operation of the crushing equipment including the vertical mill. It is an object of the present invention to provide a vertical mill guide device that can be automatically adjusted according to the movement of a pressure contact.

[0008]

[Means for Solving the Problems]

 According to the present invention, the upstream end is pivotally attached to the support arranged on the upstream side of each crushing roller in the rotation direction of the crushing table and attached to the casing, and the downstream end can be rotated in the radial direction of the crushing table. The guide plate, a drive device connected to the downstream end of the guide plate to rotate the guide plate in the radial direction of the crushing table, an angle detection sensor for detecting the pressing angle of the crushing roller, The vertical type is provided with a control device that controls the drive device so that the downstream end position of the guide plate is located on the track of the pressure contact of the crushing roller based on the detection signal of the angle detection sensor. It relates to the guide device of the mill.

[0009]

[Action]

 Therefore, in the present invention, even if the crushing roller wears and the pressure contact moves, the drive device is automatically driven by the control signal output from the control device based on the detection signal of the angle detection sensor, and the guide plate The downstream end position is rotated so that it is located on the track of the pressure contact of the crushing roller.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of a guide device for a vertical mill according to the present invention, in which the same reference numerals as those in FIGS. 5 and 6 represent the same parts.

In the vertical mill 15 having substantially the same structure as the vertical mills shown in FIGS. 5 and 6, the upstream side of each crushing roller 6 in the rotation direction of the crushing table 2 (the direction indicated by the arrow A in FIG. 2). The upstream end 16a of the guide plate 16 disposed at the center is pivotally attached to the support 17 attached to the casing 1 so that the downstream end 16b can be rotated in the radial direction of the crushing table 2. A hydraulic cylinder device 18 (driving device) capable of expanding and contracting in the semi-radial direction of the crushing table 2 is provided at a required position outside the casing 1, and a cylinder 19 of the hydraulic cylinder device 18 is attached to a mounting base 20 fixed to the casing 1. At the same time, the tip of the piston rod 21 slidably penetrates the casing 1 and is pin-connected to the downstream end 16b of the guide plate 16.

Further, as shown in FIG. 3, an angle detecting sensor 23 is confronted concentrically with the pivot shaft 22 at a position near the pivot shaft 22 of the bracket 5 supporting the crushing roller 6, and the angle detecting sensor 23 is provided. The detection terminal 24 and the pivot shaft 22 are connected via rotation transmission tools 25 and 26 so that they can rotate integrally, so that the pressing angle of the crushing roller 6 can be detected.

Further, as shown in FIG. 4, a control device 27 is provided at a required position outside the casing 1, and a detection signal 28 output in an analog manner from the angle detection sensor 23 is passed through the pulse converter 29 to the above-mentioned state. A control signal for inputting to the control device 27, a control signal 30 obtained by arithmetic processing of the detection signal 28 by the control device 27, for supplying and discharging the pressure oil 32 from the hydraulic pressure source 31 to the hydraulic cylinder device 18. A feedback signal 35 output from the valve 33 and output from a position sensor 34 mounted on the hydraulic cylinder device 18 is input to the control device 27.

Here, in the control device 27, the pressing angle of the crushing roller 6, that is, the wear state of the crushing roller 6 is recognized based on the detection signal 28 of the angle detecting sensor 23, whereby the pressing contact of the crushing roller 6 is performed. The position of the point 9 is indirectly determined. The stroke amount of the hydraulic cylinder device 18 recognized by the feedback signal 35 from the position sensor 34, that is, the position of the downstream end 16b of the guide plate 16 is detected. Then, a deviation from the position of the pressure contact 9 on the track 9'is obtained, and the position of the downstream end 16b of the guide plate 16 is immediately set on the track 9'of the pressure contact 9 so that the deviation becomes zero. A control signal 30 for controlling the control valve 33 to be positioned is calculated.

In order to determine the position of the pressure contact 9 of the crushing roller 6 from the detection signal 28 of the angle detection sensor 23, the pressing angle that changes due to wear of the crushing roller 6 and the moving position of the pressure contact 9 of the crushing roller 6 are determined. It is needless to say that the relationship with and is obtained by a preliminary experiment or the like and is input to the control device 27 in advance.

Further, in the figure, 36 is a bearing stand for the pivot shaft 22, 37 is a support plate for the angle detection sensor 23, and 38 is a fixed stand.

Therefore, even if the crushing roller 6 wears and the pressure contact 9 moves, the hydraulic cylinder device 18 is controlled by the control signal 30 output from the control device 27 based on the detection signal 28 of the angle detection sensor 23. It is automatically driven and rotated so that the downstream end 16b of the guide plate 16 is positioned on the track 9'of the pressure contact 9 of the crushing roller 6.

Therefore, according to the above-described embodiment, the position of the downstream end 16b of the guide plate 16 is adjusted according to the movement of the pressure contact 9 of the crushing roller 6 without stopping the operation of the crushing equipment including the vertical mill 15. It can be adjusted automatically.

The guide device for the vertical mill according to the present invention is not limited to the above-mentioned embodiment, and various modifications can be made without departing from the scope of the present invention. is there.

[0021]

[Effect of the device]

 According to the guide device of the vertical mill of the present invention, the downstream end position of the guide plate is automatically adjusted according to the movement of the pressure contact of the crushing roller without stopping the operation of the crushing equipment including the vertical mill. It is possible to exert an excellent effect of being able to

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a plan view showing an embodiment of the present invention.

FIG. 3 is a side view showing an arrangement state of the angle detection sensor of FIG.

FIG. 4 is a system diagram showing a control flow of an embodiment of the present invention.

FIG. 5 is a side view showing a conventional example.

FIG. 6 is a plan view showing a conventional example.

[Explanation of symbols]

 1 Casing 2 Grinding Table 6 Grinding Roller 9 Pressure Contact 9'Orbit 15 Vertical Mill 16 Guide Plate 16a Upstream End 16b Downstream End 17 Support 18 Hydraulic Cylinder Device (Drive Device) 23 Angle Detection Sensor 27 Control Device 28 Detection Signal 30 Control signal A Rotation direction

Claims (1)

[Scope of utility model registration request] 1. An upstream end can be pivotally attached to a support disposed on the upstream side of each crushing roller in the rotation direction of the crushing table and attached to a casing, and the downstream end can be rotated in the radial direction of the crushing table. Such a guide plate, a drive device connected to the downstream end of the guide plate to rotate the guide plate in the radial direction of the crushing table, an angle detection sensor for detecting the pressing angle of the crushing roller, and the angle. A vertical mill comprising: a control device that controls the drive device so that the downstream end position of the guide plate is located on the track of the pressure contact of the crushing roller based on the detection signal of the detection sensor. Guide device.