JPH0755344A - Lubricant oil supplying device for rotary kiln - Google Patents

Abstract

PURPOSE:To provide a lube oil supplying device of a rotary kiln in which lube oil can be supplied automatically and properly to a supporting block part. CONSTITUTION:A rotary kiln 1 having a shell 3 circumferentially installed at an outer circumference of each of refractory bricks assembled in a cylindrical form is rotatably arranged. An annular tire 4 rotatably supported on a supporting table at an outer circumference of the shell is arranged at its circumference through a plurality of supporting blocks 5 and then a guide bar 12 formed in a coaxial arcular shape with the rotary kiln 1. A driving piece 14 is arranged at the upper surface of the guide bar 12 and reciprocated along the guide bar 12 by an air cylinder 10 when lube oil is injected and at a substantial same speed as a rotational speed of the rotary kiln 1. There is provided a moving mechanism having a nozzle device 16 at the driving piece 14 so as to inject lube oil to a position corresponding to the supporting blocks 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil supply device for a rotary kiln, and more particularly to a supporting block portion between a rotary kiln to which cement is supplied inside and a tire on the outer circumference of the rotary kiln in a cement manufacturing process. TECHNICAL FIELD The present invention relates to a rotary kiln lubricating oil supply device for supplying lubricating oil to an engine.

[0002]

2. Description of the Related Art Conventionally, in a cement manufacturing process, a rotary kiln having a shell around the outer circumference of a refractory brick assembled in a cylindrical shape is rotatably provided, and a predetermined cement is provided inside the rotary kiln. It is carried out to supply and perform a predetermined process such as firing.

In such a conventional rotary kiln, an annular tire is provided on the outer peripheral surface of the shell through a plurality of supporting blocks so as to have a predetermined interval in the axial direction of the shell, and the tire is It is rotatably supported on a support base. Then, in a state where a predetermined cement is supplied to the inside of the rotary kiln,
The shell is rotatably driven at a predetermined speed by a predetermined driving device, and accordingly, the tires are rotatably driven together through the supporting block.

However, since the supporting block rotatably holds the shell independently of the tire, a rotation difference occurs between the shell and the tire when the shell is rotated. Due to this rolling, a frictional force is generated on the supporting block, and the supporting block is worn to shorten the life of the device. Further, increased clearance due to wear between the tire, the supporting blocks and between the shells results in increased tire and shell over-results, resulting in reduced mechanical spalling and reduced life.

Therefore, conventionally, lubricating oil is supplied to a space between the supporting blocks to prevent the supporting blocks from being worn.

[0006] Conventionally, such a lubricating oil supply operation is performed by an operator wearing heat-resistant clothing by directly operating the lubricating oil injection nozzle to inject the lubricating oil, or in the space between the supporting blocks. The lubricating oil was supplied by inserting a sausage-shaped lump.

[0007]

However, in the conventional lubricating oil supply means, when the worker manually supplies the lubricating oil, the surface temperature of the shell is 350 to 350 ° C.
It is extremely dangerous because it reaches an extremely high temperature of 400 ° C.
Furthermore, when a lump of lubricating oil is also inserted, it is dangerous because it is manually performed. Therefore, in recent years, an apparatus for automatically supplying lubricating oil has been developed. A supply nozzle for ejecting lubricating oil is arranged between the shell and the tire between the supporting blocks, and a detection device for detecting the position of the portion between the supporting blocks is arranged. Thus, the position of the portion between the supporting blocks is detected, and the lubricating oil is supplied from the supply nozzle.

However, in such an automatic lubricating oil supply apparatus, when the rotational speed of the rotary kiln is increased, the accuracy of the lubricating oil from the supply nozzle is remarkably reduced, and a small amount of lubricating oil is supplied. However, it has a problem that it can not be supplied only. In addition, since the detection device detects the position of a portion between the supporting blocks of one tire portion of the plurality of tires, the rotary kiln is twisted by heat or the like and the supporting block of the supporting block corresponding to each tire is detected. If the phase between them is deviated, there is a problem that the proper supply position of the lubricating oil cannot be detected, and again the lubricating oil cannot be properly supplied.

The present invention has been made in view of these points, and an object thereof is to provide a lubricating oil supply device for a rotary kiln capable of automatically and properly supplying lubricating oil to the supporting block portion. To do.

[0010]

In order to achieve the above object, a lubricating oil supply device for a rotary kiln according to the invention described in claim 1 has a shell provided around the outer periphery of a refractory brick assembled in a cylindrical shape. The rotary kiln is rotatably provided, and an annular tire rotatably supported on a support base is circumferentially provided on the outer peripheral surface of the shell via a plurality of supporting blocks. In a rotary kiln lubricating oil supply device for supplying lubricating oil to the space between
A nozzle unit for ejecting lubricating oil is arranged at a position corresponding to the supporting block, and when the lubricating oil is ejected by the nozzle unit, the nozzle unit is moved substantially in synchronization with the rotation of the rotary kiln. It is what

According to a second aspect of the present invention, a guide member formed in an arc shape concentric with the rotary kiln is provided, and a drive device is provided on the upper surface of the guide member along the guide member. Further, a drive member that is reciprocally driven at substantially the same speed as the rotational speed of the rotary kiln is provided, and a moving mechanism in which the nozzle unit is attached to the drive member is provided.

[0012]

According to the present invention, the nozzle unit for ejecting the lubricating oil is arranged at a position corresponding to the supporting block, and when the lubricating oil is ejected by the nozzle unit, the nozzle unit is substantially synchronized with the rotation of the rotary kiln. It is configured to move, and as this moving mechanism,
A guide member formed in an arc shape concentric with the rotary kiln is disposed, and a reciprocating drive is performed on the upper surface of the guide member by a drive device along the guide member and at substantially the same speed as the rotational speed of the rotary kiln. A driving member is provided and the nozzle unit is mounted on the driving member. While moving the nozzle unit in synchronism with the rotation of the rotary kiln, the lubricating oil is provided between the supporting blocks. Is being supplied. Also, since the nozzle unit always moves in synchronization with the space to which the lubricating oil is supplied, it corresponds to all rotational speeds of the rotary kiln, and the accuracy of the lubricating oil supplied from the nozzle unit to the space to be supplied is extremely high. Since the lubricating oil supply time also becomes longer, it is possible to supply a sufficient amount of lubricating oil in accordance with an appropriate amount, and thus a sufficient amount of lubricating oil can be supplied without using a high performance nozzle. You can also Furthermore, if the device of the present invention is installed in each part of a plurality of tires, and the detection device provided in each part adjusts the injection timing of the lubricating oil from the nozzle unit in each part, the rotary kiln twists due to heat or the like. Therefore, even if the phases of the supporting blocks corresponding to the respective tires are deviated, the lubricating oil can be reliably supplied.

[0013]

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

1 to 5 show an embodiment of a lubricating oil supply device for a rotary kiln according to the present invention. A rotary kiln 1 has a cylindrical refractory brick 2 having an outer periphery, for example, as shown in FIG. It is formed by covering with a shell 3 made of a material such as SM42, SS41. An annular tire 4 made of cast steel or the like is circumferentially provided on the outer peripheral surface of the shell 3 so as to have a predetermined interval in the axial direction of the shell 3. Between the shell 3 and the tire 4, for example, a plurality of supporting blocks 5, 5 ... Made of a material such as SM42, SS41, etc. are provided at equal intervals in the circumferential direction. By the block 5, the shell 3 has a predetermined gap with respect to the tire 4 and is rotatably held independently of the tire 4.

Below the tire 4, a support base 7 supported by the upper surface of the base 6 is disposed. Inside the support base 7, a support roller abutting on the outer peripheral surface of the tire 4 is provided. 8 is rotatably arranged. Further, the shell 3
A drive unit (not shown) is attached to the shell 3, and the shell 3 is rotated at a predetermined speed by driving the drive unit.

A moving mechanism 9 is arranged on the upper surface of the base 6 and near the tire 4. As shown in FIG. 4, the moving mechanism 9 includes a rotary kiln 1
Has an air cylinder 10 as a drive device that extends in a direction orthogonal to the axial direction of the air cylinder. Inside the air cylinder 10, the air cylinder is supplied by the pressure air supplied to both ends of the air cylinder 10. A drive piston (not shown) that is capable of reciprocating along the inside of 10 is provided. A drive plate 11 located on the upper surface of the air cylinder 10 is connected to the drive piston, and the drive plate 11 is reciprocated by the reciprocating motion of the drive piston.
It can be reciprocally driven along.

Further, above the air cylinder 10,
A pair of guide bars 12 as guide members formed in an arc shape concentric with the rotary kiln 1 are provided, and the guide bar 12 is provided on the upper surface of the drive plate 11 through the space between the guide bars 12. Holding bar 1 extending above
3 is attached. Further, a driving piece 14 as a driving member is loosely fitted in the holding bar 13 at an upper surface position of the guide bar 12 so as to be inclined with respect to the holding bar 13 within a predetermined range. The drive plate 1
1 is reciprocated along the upper surface of the guide bar 12, and is inclined along the curve of the upper surface of the guide bar 12 so that the upper surface of the driving piece 14 is tangential to the peripheral surface of the rotary kiln 1. It is designed to be located parallel to the direction. A nozzle stand 15 extending to the tire 4 portion of the rotary kiln 1 is attached to the drive piece 14, and a nozzle unit 16 is formed at the tip of the nozzle stand 15. A nozzle 17 is mounted so as to be directed between the shell 3 and the tire 4.

Further, the base 6 has a detection stand 1
8 is attached, and a supply position detecting device 19 such as a limiter switch for detecting the spatial position between the supporting blocks 5 is attached to the tip of the detection stand 18. In the present embodiment, the supply position detection device 19 is provided with, for example, a detection plate (not shown) projecting at a position corresponding to the space between the supporting blocks 5, and the detection plate operates in accordance with the space position. As a result, when the shell 3 rotates, the supporting blocks 5 are placed at positions corresponding to the nozzles 17 of the nozzle unit 16.
It is formed so as to output a signal when the space between them is positioned. The supply position detecting device 19
May be any type such as contact type and non-contact type, and
As for the installation position, if it is possible to detect the timing when the space between the supporting blocks 5 is located at a position corresponding to the nozzle 17 of the nozzle unit 16, for example,
It may be installed at any location such as the outer circumference of the tire 4 or a portion between the tire 4 and the shell 3.

Further, a lubricating oil tank 20 is provided on the upper surface of the base 6, which is filled with a predetermined lubricating oil and which is fed to the nozzle 17 of the nozzle unit 16 by air pressure. ing.

FIG. 5 shows an embodiment of an air control circuit for operating the nozzle unit 16 on the basis of a detection signal from the supply position detecting device 19. An operation air supply pipe 21 and a jetting air supply pipe 22 which are connected to a supply source and are supplied with air of a predetermined pressure are respectively provided, and the operation air supply pipe 21 is branched into four on the way. ing. Further, one branch pipe 2 of the operation air supply pipe 21
1a is further branched on the way and connected to both ends of the air cylinder 10 via the operation switching valve 23. In a normal state, air is supplied from one of the pipes and the drive piston of the air cylinder 10 is in the initial position. And the air is supplied through the other pipe by switching the operation switching valve 23 to the right side.
It is designed to move the 0 drive piston. Further, a supply switching valve 24 that is operated based on an output signal from the supply position detection device 19 is connected to the other branch pipe 21b of the operation air supply pipe 21, and the supply switching valve 24 is It is normally closed, and is switched downward based on a signal from the supply position detector 19 to open the pipe. Further, an open valve 25 is connected to the supply switching valve 24, and a pipe between the supply switching valve 24 and the opening valve 25 is branched in the middle to be connected to an operation portion of the operation switching valve 23. The operation switching valve 23 is switched when the supply switching valve 24 is open. Further, the other branch pipe 21c of the operation air supply pipe 21 is based on a signal from a detection device (not shown) that detects that the drive piston of the air cylinder 10 has moved from the initial position and is located at the other end. The supply stop switching valve 26 that is operated according to the present invention is connected, and the supply stop switching valve 26 is connected to the operating portion of the opening valve 25 via the check valve 27. Then, the supply stop switching valve 26 is in the closed state in the normal state, and the supply stop switching valve 26 is based on the signal from the detection device.
Is opened to move the open valve 25 to the open state.

Further, another branch pipe 21d of the operation air supply pipe 21 is connected to a lubricating oil tank 20 which stores lubricating oil to be supplied to the nozzle unit 16, and is connected to the lubricating oil tank 20. On the other hand, air of a predetermined pressure is supplied. Further, the jet air supply pipe 22 is connected to the nozzle unit 16 via the midstream jet switching valve 28, and the operation for supplying air in a state where the operation switching valve 23 is switched to the operating position. An intermediate portion of the pipe between the switching valve 23 and the air cylinder 10 is connected to the operating portion of the jet switching valve 28. Then, a part of the air supplied to the air cylinder 10 is supplied to the jet switching valve 28 by the downward switching operation of the operation switching valve 23, whereby the jet switching valve 28 is switched to the open state and jetted. The air in the supply air supply pipe 22 is supplied to the nozzle unit 16.

Next, the operation of this embodiment will be described.

First, in the initial state of the air control circuit, air having a predetermined pressure is supplied through the operation air supply pipe 21 and the jet air supply pipe 22, and the operation switching valve 2
The air is supplied to the air cylinder 10 through the drive piston 3, so that the drive piston is stopped at the initial position (the left end position of the drive plate 11 of FIG. 4 and the air cylinder 10 of FIG. 5), and the lubricating oil tank 20 has a predetermined position. Pressure air is being supplied. On the other hand, the supply switching valve 24 and the supply stop switching valve 2
6 and the jet switching valve 28 are in a closed state, and air is not conducted.

Next, a predetermined cement is supplied to the inside of the refractory brick 2 of the rotary kiln 1 and the driving device is driven to rotate the shell 3 at a predetermined speed.

In this state, the supply position detection device 19 outputs a detection signal corresponding to when the nozzle 17 of the nozzle unit 16 is located between the supporting blocks 5. The supply switching valve 24 is opened downward based on this detection signal, and the air in the operation air supply pipe 21 passes through the supply switching valve 24 and passes through the operation switching valve 23.
Switch to the right. As a result, the air in the operation air supply pipe 21 is sent to the air cylinder 10, the drive piston is moved to the right in FIG. 5, and the drive piece 14 is guided along the guide bar 12 via the drive plate 11 and the holding bar 13. And is moved at the same speed as the peripheral speed of the rotary kiln 1. On the other hand, by the switching operation of the operation switching valve 23, the ejection switching valve 28 is opened downward, the air from the ejection air supply pipe 22 is supplied to the nozzle unit 16, and the nozzle 17 is moved along with the movement of the drive piece 14. Lubricating oil is ejected between the supporting blocks 5.

When the drive piston is moved to the other end, the supply stop switching valve 26 is opened downward by the detection device, and the air in the operating air supply pipe 21 passes through the supply stop switching valve 26. The opening valve 25 is switched downward so that the air passing through the supply switching valve 24 is discharged from the opening valve 25 to the outside. As a result, air is not supplied to the operation switching valve 23, and the operation switching valve 23 is switched to the initial state.
The air in the operation air supply pipe 21 is supplied to the other side of the air cylinder 10, the drive piston is returned to the initial position, and the air supply to the ejection switching valve 28 is stopped, so that the ejection switching valve 28 is closed. It is operated and the ejection of the lubricating oil from the nozzle 17 is stopped. On the other hand, the supply switching valve 2
4, supply stop switching valve 26 and jet switching valve 28
Are switched to the closed state.

By repeating such operations, the lubricating oil is sequentially supplied between the supporting blocks 5. In the present embodiment, the detection position between the supporting blocks 5 by the supply position detecting device 19 is set to the following. The detection is performed at a predetermined interval, whereby the lubricating oil can be supplied by sequentially detecting all the space portions.

Therefore, in this embodiment, since the lubricating oil can be automatically supplied to the space between the supporting blocks 5, the supporting block 5 can be supplied to the supporting block 5 due to the difference in rotation between the shell 3 and the tire 4. Even if a frictional force is generated, the lubricating oil can surely prevent the supporting block 5 from being worn, and the lubricating oil is not wasted. Further, since the lubricating oil is not manually supplied, it is extremely safe and the labor cost can be remarkably reduced.

Moreover, since the lubricating oil is supplied while moving the nozzle unit 16 in synchronization with the rotation of the rotary kiln 1, the nozzle unit 16 always moves in synchronization with the space to which the lubricating oil is supplied. Nozzle unit 1 for all rotary speeds of rotary kiln 1
Since the hit rate of the lubricating oil supplied from 6 to the space to be supplied is extremely high and the lubricating oil supply time is long, it is possible to supply a sufficient amount of lubricating oil according to the appropriate amount. It is also possible to supply a sufficient amount of lubricating oil without using such a nozzle. Further, the device of the present invention is installed in each part of the plurality of tires 4, and the nozzle unit 16 is installed in each part by the detection device 19 provided in each part.
If the injection timing of the lubricating oil from the tires is adjusted, the rotary kiln 1 is twisted by heat or the like, and each tire 4
Even if the phase between the supporting blocks 5 corresponding to 1 is out of phase, the lubricating oil can be reliably supplied.

In the above embodiment, the drive piece 14
Although the case where one nozzle unit 16 is attached to the nozzle stand 15 has been described, for example, if a plurality of nozzle units 16 are attached to the nozzle stand 15, the lubricating oil can be supplied more reliably, Also,
If a plurality of nozzle units 16 are mounted so as to correspond to a plurality of locations between the supporting blocks 5, the lubricating oil can be efficiently supplied to a plurality of space portions at the same time.

The present invention is not limited to the above-mentioned embodiment, but can be variously modified as required.

[0032]

As described above, the lubricating oil supply device for the rotary kiln according to the present invention can supply the lubricating oil while moving the nozzle unit in synchronization with the rotation of the rotary kiln. As a result, the nozzle unit always moves in synchronization with the space to which the lubricating oil is supplied, which corresponds to all rotational speeds of the rotary kiln, and the hit rate of the lubricating oil supplied from the nozzle unit to the space to be supplied is extremely high. Since it will be higher and the supply time of the lubricating oil will be longer, it is possible to supply sufficient lubricating oil according to the appropriate amount, which makes it possible to supply a sufficient amount of lubricating oil without using a high performance nozzle. You can also do it. Furthermore, if the device of the present invention is installed in each part of a plurality of tires, and the detection device provided in each part adjusts the injection timing of the lubricating oil from the nozzle unit in each part, the rotary kiln twists due to heat or the like. As a result, even if the phases of the supporting blocks corresponding to the respective tires are out of phase, it is possible to reliably supply the lubricating oil.

[Brief description of drawings]

FIG. 1 is a plan view of a rotary kiln portion showing an embodiment of the present invention.

FIG. 2 is a front view of the rotary kiln portion of FIG.

FIG. 3 is a vertical sectional view of a part of a tire portion.

FIG. 4 is a perspective view of a tire portion.

FIG. 5 is a block diagram showing an embodiment of an air control circuit for operating a nozzle unit.

[Explanation of symbols]

 1 Rotary Kiln 3 Shell 4 Tire 5 Supporting Block 6 Base 9 Moving Mechanism 10 Air Cylinder 11 Drive Plate 12 Guide Bar 13 Holding Bar 14 Drive Piece 16 Nozzle Unit 17 Nozzle 19 Supply Position Detector 20 Lubricating Oil Tank 21 Air Supply for Operation Pipe 22 Air supply pipe for jetting 23 Operation switching valve 24 Supply switching valve 26 Supply stop switching valve 28 Jetting switching valve

Claims (2)

[Claims] 1. A rotary kiln having a shell around the outer periphery of a refractory brick assembled in a cylindrical shape is rotatably provided, and an annular kiln rotatably supported on a support base is provided on the outer peripheral surface of the shell. In a rotary kiln lubricating oil supply device for supplying lubricating oil to a space between each of the supporting blocks in a rotary kiln device in which a tire is circumferentially provided through a plurality of supporting blocks, a position corresponding to the supporting block A lubricating oil for a rotary kiln is provided with a nozzle unit for ejecting lubricating oil, and when the lubricating oil is ejected by the nozzle unit, the nozzle unit is moved substantially in synchronization with the rotation of the rotary kiln. Supply device. 2. A guide member, which is formed in an arc shape concentric with the rotary kiln, is provided, and a drive device is provided on the upper surface of the guide member along the upper surface of the guide member, and the rotary kiln is rotated. The lubricating oil for a rotary kiln according to claim 1, further comprising: a drive member that is reciprocally driven at substantially the same speed as the speed, and a moving mechanism provided with the nozzle unit mounted on the drive member. Supply device.