JPH0752479Y2 - Roll bearing lubricator for papermaking machines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a roll bearing lubrication device for a papermaking machine.

[Prior Art] The wet part (wire part, press part) of a papermaking machine is equipped with a large number of rolls for supporting and driving wires, felts and the like.

In a normal roll, both end shafts are supported by roll bearings, and lubricating oil is circulated to protect the roll bearings, and in order to prevent leakage of lubricating oil in the roll bearings. Although it is common practice to provide an oil seal on the roll bearing, a normal oil seal cannot be used because the roll of the wet part of the papermaking machine as described above rotates at a very high speed.

Therefore, as shown in FIG. 2, at the roll bearing 3 part that rotatably supports the shaft 2 of the roll 1 of the papermaking machine, the leakage of lubricating oil for lubricating the bearing 4 in the roll bearing 3 is prevented. Therefore, in many cases, the labyrinth seal 5 is provided on the roll 1 side of the roll bearing 3.

[Problems to be Solved by the Invention] However, since there is a gap in the labyrinth seal 5, a mist generated during the operation of the papermaking machine or a roll 1 or a wire such as a wire using high pressure shower water at rest is used. The cleaning water used for cleaning enters the inside of the roll bearing 3 through the gap of the labyrinth seal 5 and mixes with the lubricating oil. As a result, the lubrication performance is deteriorated, and there is a problem that the life of the bearing 4 of the roll bearing 3 is shortened, or rust is generated or damaged. Further, conventionally, in order to deal with the above problem, the lubricating oil is replaced at an early stage, which is very uneconomical.

The present invention was made by focusing on the above-mentioned conventional problems,
In a roll bearing lubrication device for a papermaking machine that cannot prevent the intrusion of water, the purpose is to extend the life of the bearing by monitoring the amount of water in the lubricating oil and keeping it below a certain value.

[Means for Solving the Problems] The present invention provides lubrication in which a lubricating oil in a lubricating oil tank is supplied to a roll bearing via an oil supply pipe and return oil from the roll bearing is returned to the lubricating oil tank via an oil discharge pipe. In a roll bearing lubrication device for a papermaking machine having an oil circulation path, a bypass pipe having a switching valve in the middle of the oil discharge pipe so that the flow path can be switched is connected, and a water separator is attached to the bypass pipe. Further, the lubricating oil tank is provided with an in-oil moisture measuring device for detecting the moisture content in the lubricating oil in the lubricating oil tank, and when the moisture content measured by the in-oil moisture measuring device reaches a certain level, the flow path The present invention relates to a roll bearing lubrication device for a papermaking machine, which is provided with a control device for outputting a switching signal for switching the bypass valve side to a switching valve to a switching valve and for outputting a drive signal to the moisture separator.

[Operation] Since the moisture content in the lubricating oil in the lubricating oil tank is detected by the moisture content measuring device in oil, the switching valve is switched based on the value detected by the moisture content measuring device in oil to activate the moisture separator. When the water content of the lubricating oil is removed by the above, the water content of the lubricating oil in the lubricating oil tank is maintained below a certain value.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention, in which the lubricating oil 8 in the lubricating oil tank 7 is supplied to each of the roll bearings 3 of the plurality of rolls 1 provided in the wet part 6 of the papermaking machine, the oil pump 9 and the oil supply pipe 10. And the return oil from each roll bearing 3 is returned to the lubricating oil tank 7 via the drain oil pipe 11 to form a lubricating oil circulation path 12.

A switching valve 13A is provided in the middle of the oil drain pipe 11, a bypass pipe 14 is connected to the oil drain pipe 11 so as to bypass the switching valve 13A, and a water separator 15 is further provided in the bypass pipe 14. Further, a switching valve 13B is provided between the water separator 15 and the connection portion of the bypass pipe 14 to the oil drain pipe 11.

Further, the lubricating oil tank 7 is provided with an in-oil moisture measuring device 16 for measuring the moisture content of the lubricating oil 8 in the lubricating oil tank 7 by a boiling point method or a potential difference detection method between two electrodes. To do.

Further, the water content in oil measuring device 16 displays, via the control device 17, the water content ratio measured by the water content in oil measuring device 16 and operates various states depending on the water content ratio by an alarm or the like. A moisture display alarm device 18 is connected so as to inform the staff. Furthermore, when the measured water content becomes a constant level, the control device 17 causes the switching valves 13A, 13B to
Switching signals 19A, 19B to and the drive signal 2 to the water separator 15
It is designed to output 0.

The control device 17 is pre-input so that each state of normal when the water content rate is within 0.1%, attention when 0.1 to 0.5%, and worse when 0.5% or more is output, and the measured water content. The above-mentioned state corresponding to the content rate is the water content display alarm device 18
It is output to the operator and transmitted to the operator by displaying characters, blinking indicator lights, and voice.

In the figure, 21 is water separated by the water separator 15, 9'is an auxiliary pump, 22 is an agitator, and 23 is a motor.

In the above configuration, the lubricating oil 8 in the lubricating oil tank 7 is supplied to the roll bearing 3 of each roll 1 of the wet part 6 via the oil pump 9 and the oil supply pipe 10 for lubrication, and then the drain oil pipe 11 and It is returned to the lubricating oil tank 7 through the switching valve 13A and is circulated for use.

At this time, the moisture content in the lubricating oil 8 in the lubricating oil tank 7 is measured by the moisture content measuring device 16 in oil, and the measured moisture content is transmitted via the controller 17 to the moisture display alarm device 18
Is displayed in.

Further, the control device 17 determines a normal condition, a caution condition, a deterioration condition, etc. according to the measured water content rate, and the moisture display alarm device 18 informs the worker of the condition by character display, blinking, voice or the like.

On the other hand, when the water content exceeds a certain level (for example, 0.5%), the control device 17 outputs switching signals 19A and 19B to open the switching valve 13B, closes the switching valve 13A, and returns the flow of the lubricating oil 8. Is switched from the oil drain pipe 11 to the bypass pipe 14 side,
The drive signal 20 for starting the operation is output to the water separator 15 to drive it, and the water 21 in the lubricating oil 8 is separated and removed.

The water 21 is removed by the water separator 15 until the water content in the lubricating oil 8 in the lubricating oil tank 7 becomes 0.1% or less, and when the water content becomes a normal value of 0.1% or less,
The water separator 15 is stopped, the switching valve 13A is opened, and 13B is closed to restore the original state.

With the above, the water content of the lubricating oil 8 supplied to the roll bearing 3 can be kept constantly at, for example, 0.5% or less, thereby extending the life of the roll bearing 3 and further extending the replacement period of the lubricating oil. The economy can be improved.

Further, in the above-described embodiment, switching of the switching valves 13A and 13B and operation of the water separator 15 are automatically performed by the control device 17 based on the measurement value by the water-in-oil measuring device 16, The operator may manually switch the switching valves 13A and 13B and operate the water separator 15 according to the display value or alarm of the display / alarm device 18.

It should be noted that the roll bearing lubrication device of the papermaking machine of the present invention is not limited to the above-described embodiment, and the moisture separator may be directly installed in the oil discharge pipe without being installed in the bypass pipe. Needless to say, various changes can be made without departing from the scope of the present invention.

[Advantages of the Invention] As described above, according to the roll bearing lubrication device for a papermaking machine of the present invention, the bypass which can switch the flow path through the switching valve to the drain pipe for returning the lubricating oil from the roll bearing to the lubricating oil tank. A pipe is connected, a moisture separator is attached to the bypass pipe, and a moisture content measuring device for oil is provided for detecting the moisture content in the lubricating oil in the lubricating oil tank. When the moisture content rate reaches a certain level, a switching signal that switches the flow path to the bypass pipe side is output to the switching valve, and a control device that outputs a drive signal to the moisture separator is provided. When the water content measured by reaches a certain value, the flow path is switched so that the lubricating oil flows through the bypass pipe, and the water separator can be operated to remove the water in the lubricating oil. Water Since it can always be kept below a certain value, the life of the roll bearing can be extended. Further, since the period of use of the lubricating oil can be extended, it becomes much more economical than the conventional method in which the lubricating oil is replaced early when water is mixed.

[Brief description of drawings]

FIG. 1 is a path diagram showing an embodiment of the present invention, and FIG. 2 is a partially cut front view showing a general example of a roll bearing portion of a wet part. 3 is a roll bearing, 7 is a lubricating oil tank, 8 is a lubricating oil, 10 is an oil supply pipe, 11 is an oil discharge pipe, 12 is a lubricating oil circulation path, 13A and 13B are switching valves, 14 is a bypass pipe, and 15 is a water separator. , 16 is a device for measuring water content in oil, and 17 is a controller.

Claims (1)

[Scope of utility model registration request] 1. A papermaking machine having a lubricating oil circulation path for supplying lubricating oil from a lubricating oil tank to a roll bearing via an oil supply pipe and returning return oil from the roll bearing to the lubricating oil tank via an oil discharge pipe. In a roll bearing lubrication device for a machine, a bypass pipe having a switching valve in the middle of the drain pipe so that the flow path can be switched is connected, a water separator is attached to the bypass pipe, and the lubricating oil tank is attached. A switch for switching the flow path to the bypass pipe when the moisture content measuring device for detecting the moisture content in the lubricating oil in the lubricating oil tank is provided, and the moisture content percentage measured by the moisture measuring device for oil reaches a certain level. A roll bearing lubrication device for a papermaking machine, comprising a control device that outputs a signal to a switching valve and a drive signal to a water separator.