JP3531121B2 - Rotary atomizer - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary atomizer used for drying various liquids such as ceramics, foods, pharmaceuticals, etc., a slurry, a granulation process and a harmful exhaust gas removal.

[0002]

2. Description of the Related Art In general, a rotary atomizer has a main body case having an input shaft arranged vertically and an output shaft arranged below the input shaft and on the same axis as the input shaft. Supported via, and between the input shaft and the output shaft, a planetary roller type speed increasing device consisting of a planetary pin, a planetary roller, and a fixed ring is arranged, and a rotary disc is provided at the lower end of the output shaft. The rotation of the input shaft by the drive motor is increased by the planetary roller type speed increasing device, and in general,
An injection nozzle in which a liquid containing a solid component or a slurry of the above powder, which is supplied to the rotary disk, is provided on the rotary disk by utilizing the centrifugal force acting on the rotary disk rotating at a high speed of about 6,000 to 24,000 rpm. It is atomized by being sprayed into the chamber from, and the atomized substance is generated by drying or a chemical reaction.
In addition, chemical treatment is performed using a slurry or chemicals to remove harmful exhaust gas.

For example, in Japanese Utility Model Laid-Open No. 56-44245, a main body case is divided into an upper case and a lower case, and an input shaft is supported by a bearing in the upper case.
In the lower case, a hollow lower shaft is connected to the lower part of the input shaft with a reamer bolt, and a planetary roller type speed increasing device is arranged between the input shaft and the lower shaft, and the output shaft is mounted through a bearing at the lower end of the lower shaft. The upper case, the input shaft, the output shaft, the planetary pin, etc. are provided with the lubricating oil supply paths to the bearings and the planetary roller type speed increasing device, and the output shaft is provided at the lower part of the lubricating case. An oil shield cap is provided which penetrates an output shaft insertion cylinder erected in the oil tank and protrudes from the lower end of the main body case, and which covers the output shaft insertion cylinder upper outer periphery.

[0004]

By the way, since the rotary atomizer rotates at a high speed, it is extremely important for the accuracy of the axis of the entire device and the manufacturing accuracy of each component. Since the shaft is supported, the lower case supports the fixed ring of the planetary roller type speed increasing device, the lower shaft is supported via a bearing, and the lower shaft supports the output shaft, the structure is complicated. There are many parts,
It is difficult to process and assemble parts.

Further, since the lower shaft is connected to the lower part of the input shaft, the inertia moment and inertial mass of the lower shaft are large,
It affects the acceleration and deceleration of the output shaft, and in particular, the emergency braking is not effective when an abnormal situation occurs and it is not easy to deal with it.

Further, in the support of the output shaft by the bearing at the lower end of the lower shaft, the resonance deflection when the output shaft rotating at a high speed passes mainly the primary and secondary resonance rotational speeds cannot be reduced, and the vibration caused by the vibration is generated. Problems are likely to occur.

Moreover, the supply of the lubricating oil to each part for high-speed rotation is complicated because the device itself has a complicated structure.
Lubricating oil supply passages are provided vertically and horizontally on the input shaft, output shaft, planetary pins, etc., and oil sumps are provided in various places, so the lubricating oil supply circuit has a complicated structure, the manufacturing cost is considerably high, and the maintenance cost is high. Is also difficult.

Further, since the rotary atomizer is installed in a chamber having a relatively high temperature, there is concern that the lubricating oil may be thermally affected, and further, the drying / drying generated in the chamber.
There is a problem that the chemically reactive substance flows backward from between the upper surface of the rotary disk and the lower surface of the main body case, blocking the jet nozzle of the rotary disk. Also, when the slurry etc. supplied to the rotary disk has a high viscosity, the upper surface of the rotary disk And there is a problem that it adheres to the bottom of the body case.

Further, an output shaft penetrating the output shaft insertion cylinder erected in the lubricating oil tank is provided with an oil shield cap for covering the outer periphery of the upper portion of the output shaft insertion cylinder, and lubrication is dripped from the lubricating oil supply circuit to the lubricating oil tank. It prevents oil from leaking to the rotary disk through the output shaft and contaminating the product with lubricating oil.However, it is between the oil shield cap that rotates with the output shaft and the upper part of the non-rotating output shaft insertion tube. Since there is a gap, the above structure does not completely prevent the leakage of the lubricating oil.

Moreover, the spray from the spray nozzle of the rotary disk rotating at a high speed may wear the inner circumference of the tip of the spray nozzle, resulting in damage or cracking.

In view of the above, the present invention simplifies the structure of the speed increasing mechanism that rotates at high speed and the structure of the lubricating oil supply circuit to reduce the number of parts and the manufacturing process and reduce the occurrence of abnormal vibration. It is an object of the present invention to provide a rotary atomizer for cooling, preventing leakage, and preventing wear of an injection nozzle.

[0012]

To achieve the above object Means for Solving the Problems] The present invention includes within the body casing, an input shaft which is arranged vertically, below the input shaft, the input shaft and the same axis The output shafts disposed in the respective bearings via bearings, and the planetary roller type speed increasing device is disposed between the input shaft and the output shaft. Bei the lubricating oil supply circuit example, the main body case lower the output shaft
Body through the output shaft insertion tube provided in the lubricating oil tank
Make it protrude from the lower end of the case, and attach the rotary
A rotary atomizer which example Bei a disk, provided detachably cylindrical case with a built-in speed increasing mechanism in the body case, the input shaft to the upper cylindrical casing, the output shaft within the lower cylindrical casing, the The planetary roller type speed increasing device is arranged between the output shaft and the input shaft, and a lubricating oil supply path is formed in the peripheral wall of the cylindrical case.
The cylindrical casing inner surface of the peripheral wall, the opened lubricant supply port and each bearing the planetary roller speed increasing device, respectively, said Jun
A cooling chamber for the lubricating oil tank is formed on the outer circumference of the lubricating oil tank.
The air supply pipe that supplies cooling air to the cooling chamber.
It is characterized by being connected .

Further , in the above invention, a sliding bearing having a slight clearance between the output shaft inserting cylinder and the output shaft is loosely fitted, and the sliding bearing is supported by a spring from below. There is.

[0014]

Further, in each of the above inventions, an air supply pipe extending from the cooling chamber to the lower part of the main body case is provided,
On the rotary disk at the jet outlet of the air supply pipe
It is characterized in that an orifice structure portion for ejecting air is formed on the surface and the lower surface of the main body case .

Furthermore, in each of the above inventions, an air supply pipe for ejecting air into the output shaft inserting cylinder is provided below the lubricating oil tank, and an air supply pipe is provided inside the output shaft inserting cylinder.
It is characterized in that a spiral groove is formed in a direction opposite to the rotation direction of the output shaft.

Further , in each of the above inventions, it is characterized in that the injection nozzle provided on the rotary disk has a rounded inner periphery at the tip end portion.

[0018]

[Operation] According to the above configuration, in the present invention, the input shaft, the planetary roller type speed increasing device, and the output shaft are provided in the cylindrical case, and the lubricating oil supply circuit is provided on the peripheral wall of the cylindrical case. By integrating the speed increasing mechanism and simplifying the structure of the speed increasing mechanism and the structure of the lubricating oil supply circuit, the number of parts and manufacturing process can be reduced, and the rigidity of the entire structure is improved.
Since processing accuracy is improved because processing becomes easier,
The eccentricity error on the axis is reduced, which can reduce vibration and noise. Also, cooling of the outer periphery of the lubricating oil tank
By supplying cooling air to the chamber, the lubricating oil tank
The lubricating oil inside the tank can be cooled and
Since a heat insulating space layer is formed by cooling air, lubricating oil
The heat effect from the outside can be cut off.

Further , the output shaft is inserted into the output shaft insertion tube.
A sliding bearing having a slight clearance between the
The output shaft is mainly primary rotating at a high speed by the support at the spring re bearings from below, the secondary resonance rotation speed of the resonant bending prevention limit or more flexure with the time passing, Ru can be reduced .

Further, since the air is ejected at a high speed from the ejection port by the orifice structure of the air supply pipe ejection port, it is possible to prevent the slurry or the like supplied to the rotary disc from adhering to the upper face of the rotary disc and the lower face of the main body case. The dry / chemically-reacted substance generated in the chamber is prevented from flowing back between the upper surface of the rotary disk and the lower surface of the main body case and entering the rotary disk. Further, the air jetted into the output shaft insertion tube is discharged into the lubricating oil tank through the gap between the oil shield cap and the outer periphery of the upper portion of the output shaft insertion tube, so that the oil shield cap and the outer periphery of the upper portion of the output shaft insertion tube are separated. The lubricating oil is prevented from entering the output shaft insertion cylinder through the gap, and the spiral groove on the inner circumference of the output shaft insertion cylinder is formed in the direction opposite to the rotation direction of the output shaft.
An upward air flow is generated in the output shaft insertion tube, and this air flow acts as an air seal in the gap between the upper outer periphery of the output shaft insertion tube and the oil shield cap, even if the air supply is stopped, Prevents lubricating oil from entering the output shaft insertion tube.

Further, since the inner periphery of the tip of the injection nozzle is rounded, the slurry or the like is widely and flatly dispersed, so that the particle shape of the spray can be made uniform, and the inner periphery of the tip of the injection nozzle is abraded. Reduce.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The rotary atomizer 1 is installed on the ring pedestal 2a of the chamber 2. The rotary atomizer 1 includes a main body case 3 having a drive mechanism, a supply pipe 4 for slurry or the like, and an air supply device 5. The first air supply pipe 6, the second air supply pipe 7 and the air discharge pipe 8 are connected to each other.

The body case 3 is attachable to and detachable from the lower portion of the mounting plate 9 and a cylindrical upper case 10 detachably provided on the upper side of the mounting plate 9 with the mounting plate 9 attached to the ring receiving base 2a interposed therebetween. Lower cone-shaped lower case 1
It is composed of 1 and 1.

A cylindrical case 13 containing a planetary roller type speed increasing device 12 is detachably provided in the upper case 10, and an output shaft 14 of the planetary roller type speed increasing device 12 penetrates the lower case 11. And a rotary disk 15 is provided on the tip of the output shaft 14 and projects toward the lower surface of the lower case 11.
The rotation of the rotary disk 15 is accelerated by the planetary roller type speed increasing device 12 to rotate the rotary disk 15 at high speed.

The lower case 11 has a dual structure of an inner lubricating oil tank 17 and an outer cooling chamber 18, and the lubricating oil tank 17 is supplied with lubricating oil for the planetary roller type speed increasing device 12. A circuit 19 is connected to the cooling chamber 18. The first air supply pipe 6 and the air discharge pipe 8 are connected to the cooling chamber 18 for cooling the lubricating oil in the lubricating oil tank 17, and further, inside the cooling chamber 18. Is a supply pipe 4 for the slurry or the like.
And the second air supply pipe 7 are provided.

The cylindrical case 13 is composed of a large-diameter portion 13a arranged in the upper case 10, a small-diameter portion 13b arranged in the lower case 11, and a lid 13c for closing the upper opening of the large-diameter portion 13a. In the large diameter portion 13a, the input shaft 21 connected to the drive shaft 16a of the drive motor 16 via the coupling 20 and the planetary roller type speed increasing device 12 are arranged, and in the small diameter portion 13b. Is provided with the output shaft 14.

The input shaft 21 is supported by a bearing housing 22 fixed in the large diameter portion 13a via an upper bearing 23 and a lower bearing 24, and between the upper bearing 23 and the lower bearing 24. , Collars 25, 26 are provided.

In the present embodiment, the planetary roller type speed increasing device 12 includes four planetary pins 27 fixed to the lower end of the input shaft 21.
And each planet pin 27 has a needle bearing 28
And a planetary roller 29 provided via the
The fixing ring 30 is provided on the outer circumference of the output shaft 14, and the sun roller 14a that is formed on the upper end of the output shaft 14 and protrudes from the center of each planetary roller 29.
Is fixed to the upper part of the stepped portion 13d of the large diameter portion 13a and the small diameter portion 13b of the cylindrical case 13.

The planetary roller type speed increasing device 12 is driven by a shearing force due to the viscosity of the oil film formed between each planetary roller 29, the fixed ring 30, and the sun roller 14a by the lubricating oil supplied inside. Transmits force, input shaft 2
The output shaft 14 is rotated at a high speed by accelerating the rotation of 1.
The rotation ratio can be changed by changing the diameters of the planetary roller 29, the fixed ring 30, and the sun roller 14a.

The output shaft 14 is the small diameter portion 1 of the cylindrical case 13.
3b is supported via an upper bearing 31 and a lower bearing 32, penetrates the output shaft insertion cylinder 17a provided in the lubricating oil tank 17 and projects from the lower end of the lower case 11, and the rotary disk 15 is attached to the tip. . Also, the output shaft 14
An oil shield cap 33 that covers the upper outer circumference of the output shaft insertion cylinder 17a is provided on the lower outer circumference of the lower bearing 32.

At the bottom of the output shaft insertion tube 17a, the output shaft 1
4 The sliding bearing 34 having a slight clearance between the outer circumference and
The sliding bearing 34 is loosely fitted between the outer periphery and the output shaft insertion tube 17a with a gap, and the sliding bearing 34 is supported by a spring 35 from below.

With this structure, the rotary atomizer 1
Occurs when the output shaft 14 passes mainly through the primary and secondary resonance points during the acceleration from the startup to the steady high-speed rotation of the output shaft 14 or during the rotation fluctuation from the steady high-speed rotation to the stop during the operation of Resonant bending of the output shaft 14 beyond a certain limit is suppressed and reduced. That is, by suppressing or reducing a large shake that occurs near an abnormal time and leaving a small shake without forcibly restraining it, overload on the output shaft 14, the upper bearing 31 and the lower bearing 32 is prevented, and the output shaft 14 is prevented. The durability of the upper bearing 31 and the lower bearing 32 is improved.

The lubricating oil supply circuit 19 pressure-feeds the lubricating oil from the lubricating oil tank 17 into the cylindrical case 13 by the hydraulic pump 36, and the input shaft 21, the planetary roller type speed increasing device 12 and the output in the cylindrical case 13. Shaft 14, bearings 23, 24, 3
1, 32 are refueled and dropped from the lower end of the cylindrical case 13 into the lubricating oil tank 17 for circulation.

The lubricating oil supply circuit 19 includes a hydraulic pump 36, a hydraulic pressure gauge 37, an oil temperature gauge 38 with electric contacts, a water-oil heat exchanger 39, an oil filter 40, an oil temperature gauge 41, and a hydraulic pressure gauge 4.
2. The flowmeter 43 with electric contacts is provided, and the water-oil heat exchanger 39 is provided with the flowmeter 44 with electric contacts.
5 are provided.

For this reason, in the cylindrical case 13, a lubricating oil supply passage 46 and a lubricating oil discharge passage 47, which form a part of the lubricating oil supply circuit 19, are provided on the peripheral wall of the large diameter portion 13a of the cylindrical case 13 and the step portion 13d. And inside the peripheral wall of the small diameter portion 13b.

The lubricating oil supply passage 46 has an oil supply port 46a, to which the line from the hydraulic pump 36 is connected, opened on the upper surface of the lid 13c, and the lubricating oil discharge passage 47 is provided at the lower end of the small diameter portion 13b for supplying lubricating oil to the lubricating oil tank 17. The discharge port 47a for dropping is opened.

On the inner surface of the cylindrical case 13, a supply port 46b for supplying lubricating oil from the lubricating oil supply passage 46 to the upper bearing 23 and the lower bearing 24 of the input shaft 21, and lubricating oil to the planetary roller type speed increasing device 12. Supply port 46c for supplying, supply port 46d for supplying lubricating oil to the upper bearing 31 of the output shaft 14, and supply port 46e for supplying lubricating oil to the lower bearing 32 of the output shaft 14.
And have been opened.

On the inner surface of the cylindrical case 13, a discharge port 47b from the oil sump 48 below the lower bearing 24 of the input shaft 21 is provided as a discharge port to the lubricating oil discharge passage 47, facing the supply ports. And an outlet 47c from the oil sump 49 above the planetary roller type speed increasing device 12, and the planetary roller type speed increasing device 1
2 Discharge port 47d from the lower oil sump 50 and the oil sump 50
The outlet 47e from the bottom and the upper bearing 31 of the output shaft 14
An outlet 47f from the lower oil sump 51 is opened.

The lubricating oil supply circuit 19 has a lubricating port 46a.
The lubricating oil supplied to the lubricating oil supply path 46 from the supply port 46
The oil is supplied to the bearings 23 and 24 of the input shaft 21 via b, enters the oil sump 48, and is discharged from the discharge port 47b to the lubricating oil discharge passage 47 by the rotational centrifugal force of the input shaft 21.

The lubricating oil passing through the supply port 46c is
Oil is supplied to the upper surface of the planetary roller 29 and enters the oil sump 49,
Part of the oil flows through the inside of the needle bearing 28 and flows into the oil sump 50 on the lower surface of the planetary roller 29, and part of the oil flows toward the outer peripheral side of the fixed ring 30 by the centrifugal force of the planetary roller 29 rotating at high speed, and the upper surface of the fixed ring 30. The oil is discharged from the discharge port 47c to the lubricating oil discharge passage 47 through the inner peripheral side groove 30a, the radial groove 30b, and the outer peripheral side groove 30c formed in the above.

A part of the lubricating oil flowing to the oil sump 50 is directed toward the outer peripheral side of the fixed ring 30 by the centrifugal force of the planetary roller 29, and the inner peripheral side groove 30 formed on the lower surface of the fixed ring 30.
d, the radial groove 30e, the outer peripheral side groove 30f, and the discharge port 4
7d is discharged to the lubricating oil discharge path 47, and a part of the oil is collected in the oil sump 5
It is discharged to the lubricating oil discharge path 47 from the discharge port 47e at the bottom of the 0.

Lubricating oil passing through the supply port 46d is supplied to the upper bearing 31 of the output shaft 14 and is supplied from the oil sump 51 to the discharge port 4
It is discharged to the lubricating oil discharge path 47 through 7f, and is dropped into the lubricating oil tank 17 from the discharge port 47a of the lubricating oil discharge path 47,
Further, the lubricating oil that has passed through the lubricating oil supply port 46 e supplies the lower bearing 32 of the output shaft 14 and drops into the lubricating oil tank 17.

The first air supply pipe 6 connected to the cooling chamber 18 of the lower case 11 is lubricated in the lubricating oil tank 17 by normal temperature air from which fine dust is removed by the filter 52 provided in the air supply device 5. In addition to cooling the oil, a heat insulating space layer is formed on the outer periphery of the lubricating oil tank 17 to block the heat effect from the inside of the chamber 2. Also, the cooling chamber 1
The slurry supply pipe 6 disposed in the lower case 1 is
A plurality of supply ports 53 for slurry, etc., which are opened at equal intervals on the lower surface of 1, are connected.

The second air supply pipe 7 is an air supply port 5 which is opened above the sliding bearing 34 of the output shaft insertion cylinder 17a.
The air from which the fine dust has been removed and which is connected to the air supply device 4 is blown upward and downward along the output shaft 14, respectively. A spiral groove 55 is formed in the output shaft insertion cylinder 17a in a direction opposite to the rotation direction of the output shaft 14.

Further, a third air supply pipe 57 having a ventilator 56 is provided in the lower portion of the cooling chamber 18,
The third air supply pipe 57 communicates with a jet port 58 that opens circumferentially on the lower surface of the lower case 11, and the jet port 58 has an orifice structure portion 58 for jetting air at high speed.
a is formed.

FIG. 12 shows another embodiment in which the orifice structure portion 58a of the jet outlet 58 is formed up to the jet outlet end portion.

The rotary disk 15 has a plurality of jet nozzles 59 on its side surface at equal intervals, rotates at high speed together with the output shaft 14, and the centrifugal force of this high-speed rotation causes the slurry or the like to enter the chamber 2 from each jet nozzle 59. The injection nozzle 59 is made of a material having high wear resistance, such as ceramics, and is formed in a conical shape with the outer diameter on the distal end side smaller than the outer diameter on the proximal end side. The inner circumference 59b of the tip of the injection hole 59a is rounded.

With this structure, the injection nozzle 59 does not fall off even when a centrifugal force of high-speed rotation is applied, and the inner periphery 59b of the injection hole 59a is rounded so that the slurry or the like can be spread widely and three-dimensionally. Because they are dispersed
The particle shape of the spray can be made uniform, and in the case of harmful exhaust gas treatment, the exhaust gas treatment can be made stable by uniformly promoting the chemical reaction, and the injection holes by high-speed injection of slurry etc. It is possible to reduce wear of the inner circumference 59b of the tip portion of 59a.

The rotary atomizer 1 thus constructed accelerates the rotation of the drive motor 16 through the planetary roller type speed increasing device 12 to rotate the rotary disk 15 at a high speed, and the slurry such as slurry is supplied from the supply pipe 4 to the slurry. Supply port 5 for
Slurry or the like that is pressure-fed to the rotary disk 15 via 3 is sprayed into the chamber 2 from the spray nozzle 59 by the centrifugal force acting on the rotary disk 15, and atomized.

At this time, the lubrication oil is supplied to the cylindrical case 13 by the lubrication oil supply circuit 19 described above, and the lubrication oil in the lubrication oil tank 17 is cooled by the first operation.
It is performed by the air supplied from the air supply pipe 6 to the cooling chamber 18.

A part of the air supplied to the cooling chamber 18 is discharged to the outside through the air discharge pipe 8, and the remaining part of the air passes through the third air supply pipe 57 and is jetted at high speed from the jet port 58 to the upper surface of the rotary disk 15. , Part of which is blown to the outer peripheral side of the rotary disc 15, and the rest is of the rotary disc 1
5 is blown to the inner circumference side.

The air blown to the outer peripheral side of the rotary disk 15 prevents the slurry or the like supplied to the rotary disk 15 from adhering to the upper surface of the rotary disk 15 and the lower surface of the lower case 11, and also the chamber 2
The dry / chemically-reacted substances generated inside are prevented from being sucked into the central portion of the rotary disk 15 by the high speed rotation of the rotary disk 15, and as a secondary effect, the dried / chemically reacted material is prevented from adhering to the outer wall 11a of the lower case 11. The adhesion of the substance is reduced.

The air blown to the inner peripheral side of the rotary disk 15 prevents the slurry or the like supplied to the rotary disk 15 from adhering to the upper surface of the rotary disk 15 and the lower surface of the lower case 11 and enters the rotary disk 15. , And the slurry or the like supplied to the rotary disk 15 are jetted at high speed from the jet nozzle 59 into the chamber 2.

Further, the air supplied from the second air supply pipe 7 is blown upward and downward along the output shaft 14 from the air supply port 54 opening at the upper part of the sliding bearing 34 of the output shaft insertion cylinder 17a. The air blown downward along the output shaft 14 passes through the gap inside and outside the sliding bearing 34 and the gap between the springs 35, and the output shaft 14, the sliding bearing 34,
While preventing the slurry or the like from adhering to the spring 35,
Enter Rotary Disc 15 and then Rotary Disc 1
High-speed injection is performed in the chamber 2 together with the slurry or the like supplied to the chamber 5.

The air blown upward along the output shaft 14 passes through the gap between the output shaft insertion cylinder 17a and the output shaft 14, and is lubricated from the gap between the upper outer periphery of the output shaft insertion cylinder 17a and the oil shield cap 33. It prevents the lubricating oil and the oil mist that are blown into the oil tank 17 and drip into the lubricating oil tank 17 from the discharge port 47a of the lubricating oil discharge passage 47 in the lower part of the cylindrical case 13 from entering the output shaft insertion cylinder 17a. It is discharged from the air breather 60 to the outside.

As a result, it is possible to prevent the lubricating oil from passing through the output shaft 14 and being mixed into the slurry or the like, so that the product and the chemical reaction in the chamber 2 can be stabilized.

Further, when the oil temperature of the lubricating oil rises and the pressure in the lubricating oil tank 17 rises for some reason such as a decrease in the cooling effect of the lubricating oil tank 17 or a failure of the drive system, the air breather 60 operates. Thus, the lubricating oil and the oil mist are prevented from entering the output shaft insertion cylinder 17a, and the mixing of the lubricating oil into the product is prevented.

Further, when the air blown upward along the output shaft 14 is stopped for some reason, the spiral groove 55 in the output shaft insertion tube 17a moves in the direction opposite to the rotation direction of the output shaft 14. Since it is formed, due to the viscosity of the air on the surface of the output shaft 14 due to the high speed rotation of the output shaft 14, an upward air flow is generated in the output shaft insertion cylinder 17a, and this air flow causes the upper outer periphery of the output shaft insertion cylinder 17a to An air-sealing action works in the gap with the oil shield cap 33 to prevent lubricating oil and oil mist from entering the output shaft insertion cylinder 17a.

The air supplied from the air supply device 5 through the first air supply pipe 6 and the second air supply pipe 7 has fine dust removed by the filter 52.
Even if the rotary atomizer 1 is installed in a place where the environment is particularly bad, fine dust does not enter the lubricating oil and the chamber 2.

Further, in the rotary atomizer 1, the drive motor 16 is provided with a vibration accelerometer 61 with electric contacts, and when the vibration accelerometer 61 with electric contacts detects an abnormal vibration exceeding a prescribed value, the drive motor 16 is stopped. It is like this.

Furthermore, if the temperature of the lubricating oil rises abnormally for some reason inside the rotary atomizer 1, the oil temperature gauge 38 with electric contacts provided in the lubricating oil supply circuit 19
When the flow rate of the lubricating oil is abnormal, when the flow meter with electric contact 43 causes an abnormality in the cooling water circuit 45 of the water-oil heat exchanger 39 such as clogging, stoppage or reduction of the cooling water, An abnormality is detected by the flowmeter 44 with electric contacts, and the drive motor 16 is stopped.

Moreover, the oil temperature gauge 38 with an electric contact and the oil temperature gauge 4
By visually confirming the temperature difference of 1, the effect of the water-oil heat exchanger 39 can be grasped, and the water temperature of the cooling water supplied to the cooling water circuit 45 can be managed. In addition, the oil pressure gauge 37
The clogging of the oil filter 40 can be monitored by visually confirming the differential pressure between the oil pressure gauge 42 and the oil pressure gauge 42.

[0064]

As described above, according to the present invention, a rotary atomizer of the present invention, within the body casing, detachable cylindrical case with a built-in speed increasing mechanism composed of the input shaft and the planetary roller speed increasing device and the output shaft And a lubricating oil supply passage is formed in the peripheral wall of the cylindrical case, and each bearing for supporting the input shaft and the output shaft and the lubricating oil supply port to the planetary roller type speed increasing device are formed on the inner surface of the cylindrical case peripheral wall. Since each opened,
Integrating the speed increasing mechanism, simplifying the structure of the speed increasing mechanism and the structure of the lubricating oil supply circuit to reduce the number of parts and the manufacturing process, and the rigidity of the entire structure is improved, making it easier to process. Since the overall machining accuracy is improved, the eccentricity error on the axis is reduced, which reduces vibration and noise, and the cylindrical case with built-in speed increasing mechanism can be attached / detached for maintenance, repair, Easy to replace. In addition, on the outer circumference of the lubricating oil tank,
Cooling chamber is formed, and cooling air is supplied to the cooling chamber.
By doing so, it is possible to cool the lubricating oil in the lubricating oil tank.
In addition, an insulating space layer with cooling air around the lubricating oil tank
It is possible to block the heat influence from the outside on the lubricating oil.
Rotary atomizer in a relatively hot chamber
Can be used .

Further , a sliding bearing having a slight clearance with the output shaft is loosely fitted in the output shaft insertion cylinder, and the sliding bearing is supported from below by a spring, so that the sliding bearing rotates at a high speed. It is possible to suppress or reduce the deflection of the resonance deflection beyond a certain limit when the shaft passes mainly the primary and secondary resonance rotational speeds. That is, it is possible to improve the durability of the output shaft by suppressing or reducing a large shake that occurs near an abnormal time and leaving the small shake without forcibly restraining it.

[0066]

[0067] Further, disposed from the cooling chamber formed an air supply pipe for ejecting air to the underside rotary disc upper surface and the main body case in the lubricating oil tank periphery, to form an orifice structure to spout of the air supply pipe , the orifice structure
By blowing air at high speed from the jet outlet of the slurry, it is possible to prevent the slurry etc. supplied to the rotary disk from adhering to the upper surface of the rotary disk and the lower surface of the main body case, and the dry and chemical reaction substances generated in the chamber are rotated. It prevents the backflow from entering between the upper surface of the disk and the lower surface of the main body case and entering the rotary disk.

Further, the output shaft passing through the output shaft inserting cylinder in the lubricating oil tank of the main body case is provided with an oil shield cap for covering the outer periphery of the upper portion of the output shaft inserting cylinder, and the output shaft inserting pipe is inserted under the lubricating oil tank at the lower part of the main body case. since providing the air supply pipe for supplying air to the cylinder, depending on the air <br/> supplied to the output shaft insertion cylinder, shield the output shaft through the gap between the oil cap and the output shaft insertion cylinder upper outer peripheral preventing lubricating oil from entering the cylinder, or
And, in the circumferential output shaft insertion cylinder, or we formed a reverse spiral groove and the rotational direction of the output shaft, an upward air flow in the output shaft insertion cylinder occurs, the output shaft through this air stream The air seal function works in the gap between the outer circumference of the cylinder and the oil shield cap,
Even if the air supply is stopped, the lubricating oil is prevented from entering the output shaft insertion tube.

[0069] Further, by remembering rounded peripheral within the distal end of the injection nozzle of the rotary disc, since the slurry or the like is widely sterically dispersed, Hakare the uniformity of particle shape of the spray, in the case of harmful exhaust gas treatment By uniformly and uniformly promoting the chemical reaction, exhaust gas treatment can be stably performed, and wear of the inner circumference of the tip of the injection nozzle is reduced.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a cylindrical case incorporating a speed increasing mechanism according to an embodiment of the present invention.

FIG. 2 is a partial sectional view of a rotary atomizer.

FIG. 3 is a schematic diagram of a rotary atomizer.

FIG. 4 is a front view of a rotary atomizer.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is a front view of a rotary atomizer provided in the chamber.

FIG. 7 is a plan view of a rotary atomizer.

FIG. 8 is an enlarged sectional view of a speed increasing mechanism.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is an enlarged cross-sectional view showing details of the inside of the lower case.

FIG. 11 is an enlarged cross-sectional view showing details of the inside of the lower case.

FIG. 12 is an enlarged cross-sectional view showing another embodiment inside the lower case.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rotary atomizer, 2 ... Chamber, 3 ... Main body case, 4 ... Slurry supply pipe, 6 ... 1st air supply pipe, 7 ... 2nd air supply pipe, 8 ... Air discharge pipe, 10 ...
Upper case, 11 ... Lower case, 12 Planetary roller type speed increasing device, 13 ... Cylindrical case, 14 ... Output shaft, 14a ... Sun roller, 15 ... Rotary disk, 16 ... Drive motor, 17 ... Lubricating oil tank, 17a ... Output Shaft insertion tube, 18
... Cooling chamber, 19 ... Lubricating oil supply circuit, 21 ... Input shaft, 23
... upper bearing of the input shaft 21, 24 ... lower bearing of the input shaft 21, 27 ... planet pins, 29 ... planet rollers, 30 ... fixing ring, 31 ... upper bearing of the output shaft 14, 32 ... output shaft 14
Lower bearing, 33 ... oil shield cap, 34 ... sliding bearing,
35 ... Spring, 36 ... Hydraulic pump, 38 ... Oil thermometer with electric contact, 39 ... Water-oil heat exchanger, 43 ... Flowmeter with electric contact,
44 ... Flowmeter with electric contact, 45 ... Cooling water circuit, 46 ... Lubricating oil supply passage, 46a, 46b, 46c, 46d, 46e
... Supply port of lubricating oil supply passage 46, 47 ... Lubricating oil discharge passage, 4
7a, 47b, 47c, 47d, 47e, 47f ... Discharge port of the lubricating oil discharge path 47, 53 ... Supply port for slurry, etc., 5
4 ... Air supply port, 55 ... Spiral groove, 57 ... Third air supply pipe, 58 ... Jet port, 58a ... Orifice structure part of jet port 58, 59 ... Jet nozzle, 59a ... Jet hole, 59b ...
Inner circumference of tip of injection hole 59a, 60 ... Air breather, 61 ...
Vibration accelerometer with electrical contacts

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B05B 3/02 B01D 1/20 B01D 53/34 B01D 53/77

Claims (5)

(57) [Claims] 1. An input shaft arranged vertically in a main body case, and an output shaft arranged on the same axis as the input shaft below the input shaft are supported by bearings, respectively, and disposed a planetary roller speed increasing device between the output shaft and the input shaft, said Bei to give a lubricating oil supply circuit between the bearings to the planetary roller speed increasing device, the main body case lower the output shaft of
Penetrating the output shaft insertion tube provided in the lubricating oil tank,
Project from the lower end of the
A rotary atomizer which example Bei a disk, provided detachably cylindrical case with a built-in speed increasing mechanism in the body case, the input shaft to the upper cylindrical casing, the output shaft within the lower cylindrical casing, the The planetary roller type speed increasing device is disposed between the output shaft and the input shaft to form a lubricating oil supply passage in the peripheral wall of the cylindrical case, and the bearings are provided on the inner surface of the peripheral wall of the cylindrical case. Lubricating oil supply ports to the planetary roller type speed-increasing device are opened respectively ,
A cooling chamber for the lubricating oil tank is formed on the outer periphery of the oil tank,
A rotary atomizer, characterized in that an air supply pipe for supplying cooling air is connected to the cooling chamber . To wherein said output shaft through tube, claims wherein the loosely fitted a sliding bearing having a slight Joint Gap between the output shaft, characterized by being supported by springs the sliding bearing from below
The rotary atomizer described in 1 . 3. From the cooling chamber to the lower part of the main body case
An air supply pipe is installed, and at the jet outlet of the air supply pipe,
Air is applied to the upper surface of the rotary disk and the lower surface of the main body case.
The rotary atomizer according to claim 1 or 2, wherein an orifice structure portion for ejecting the gas is formed . 4. The output shaft is provided below the lubricating oil tank.
An air supply pipe for ejecting air is provided in the insertion tube, and
In the inner circumference of the output shaft insertion tube, the direction opposite to the rotation direction of the output shaft
4. The spiral groove according to claim 1 is formed .
The rotary atomizer according to claim 1 . 5. An injection nozzle provided on the rotary disk.
請 characterized in that remembering rounded inner periphery nozzle tip portion
The rotary atomizer according to any one of claims 1 to 4 .