JP2010096288A - Rotary shaft supporting device for rotating instrument and lubricating oil circulation system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary shaft supporting device for a rotating instrument, which can surely support the rotary shaft of the instrument rotating at a high speed, can ensure the smooth and efficient rotation of the rotary shaft, and at the same time allows the periodic inspection and component replacement of the rotating instrument to be quickly and efficiently performed, and to provide a lubricating oil circulation system provided with this device. <P>SOLUTION: The rotary shaft supporting device 1 for the rotating instrument includes a base housing 3, an upper housing 4 mounted on the base housing 3, bearings 6 held in a housing box 2 formed of the base housing 3 and the upper housing 4 and supporting the rotary shaft 5 of the rotating instrument and a lubricating oil supplier 9 disposed in the housing box 2 for supplying a lubricating oil. The lubricating oil circulation system 100 includes the rotary shaft supporting device 1 for the rotating instrument, an oil storage tank 14 for storing a lubricating oil, an oil cooler 18 for cooling the lubricating oil and a delivering pump 16 for circulating the lubricating oil. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a rotary shaft support device for a rotary device and a rotary shaft support for the rotary device, such as a centrifugal separator, a turbine, a blower, a machine tool, etc., having a structure suitable for replacement and maintenance of a rotary shaft that rotates at high speed. The present invention relates to a lubricating oil circulation system equipped with a device.

  In a conventional general rotating shaft support device for a rotating device, a housing box having an integral structure that cannot be divided for maintenance is applied, and a bearing is incorporated inside the housing box to support a rotating device support shaft (rotating shaft). I support it.

  Such a rotating shaft support device for rotating equipment is not preferable in terms of maintenance and management of rotating equipment because it is impossible to check and confirm the status of bearings and support shafts incorporated in the housing box of an integral structure that cannot be divided. There was a problem. In particular, when performing periodic inspection of rotating equipment and replacement of parts such as bearings, there is a problem that not only the rotating equipment but also the housing box must be disassembled and removed.

  Therefore, in the field of machine tools, a front housing unit in which the housing of the spindle head is divided into a front housing and a rear housing, and the front housing, the front bearing portion, the support shaft and the rear bearing portion are assembled together. There is provided a spindle device for a machine tool in which the front housing unit is detachably fastened with the rear housing (see, for example, Patent Document 1).

  According to the spindle device of the machine tool disclosed in Patent Document 1, the front housing unit, the support shaft, and the rear bearing portion are exchanged together with the front housing unit by extracting the front housing unit from the rear housing in the axial direction. It can be done.

JP 2007-1010 A (paragraphs [0009], [0014] and FIG. 1)

  In the conventional rotating shaft support device for general rotating equipment, the housing box in which the bearing and the support shaft are incorporated cannot be divided as described above. There was a problem that not only the device body but also the housing box had to be disassembled and removed.

  Even in the spindle device of the machine tool of Patent Document 1, there is a problem that the state of the bearing and the spindle inside the front housing unit cannot be inspected and confirmed during maintenance. In addition, when replacing the parts inside the front housing unit, a special and large support shaft replacement jig is installed at a predetermined location, and the front housing unit is axially extracted from the rear housing by the support shaft replacement jig. Each housing unit must be replaced with a new one, and the assembly of the new front housing unit is also very complicated, and periodic inspections involving disassembly etc. are required for rotating equipment that requires precise and strict technology and work. In addition, there are many problems in that maintenance management operations such as replacement of parts and parts are carried out quickly and efficiently, and there is a problem that special and large-sized support shaft replacement jigs have increased equipment costs.

Among various rotating devices, the centrifuge is a heavy machine that rotates at a high speed and generates a large gravitational acceleration. Therefore, the centrifuge is damaged or destroyed by a slight distortion or a level error.
Therefore, it must be handled as a precision instrument, and must be carefully and precisely installed and installed, requires advanced technology and many years of experience, and is complicated.
In such periodic inspections and replacement of parts of the centrifuge (methods and frequency are strictly regulated by laws and regulations), not only the centrifuge body but also the housing box must be disassembled and removed each time carefully and precisely. Installation and installation must be performed, skilled technicians with advanced technology and many years of experience are required, and complicated work is involved. For this reason, a long period of time and a lot of manpower are required until the inspection is completed, and the cost becomes high.
Furthermore, even during inspections, normal operation and processing must be performed, which increases the construction cost, such as the installation of alternative equipment, the construction of sufficient facilities, and the large site required for this. I was invited.

In addition, if the supply of good lubricating oil to the bearing is not performed appropriately and efficiently, the frequency of inspection and repair repair after disassembling naturally increases, the above-mentioned problems occur frequently, and rotating equipment (for example, In addition, the operation of the centrifuge for sludge treatment is hindered and the burden on the owner is increased. In addition, in the case of a centrifuge for solid-liquid separation of a septic substance (for example, sludge generated with wastewater treatment), sludge is rotted due to troubles in operation, and the treatment causes a further burden.
If the rotating body of the centrifuge is defective due to inspection, it must be repaired for a considerable period of time because it cannot be easily replaced with a spare rotating body for accuracy of installation. It had a great influence on the operation (processing) of the entire facility.

In order to operate a centrifuge that rotates at a high speed and generates a large gravitational acceleration stably and efficiently, the bearing must be kept in a good state to prevent damage and destruction. In order to do so, it is necessary to supply a suitable, stable, good quality and good lubricating oil (with no foreign matter mixed in, proper temperature, viscosity, amount).
Since the centrifuge is rotating at high speed, the lubricating oil may be mixed with foreign matter such as metal powder generated by wear or contact of the rotating spindle (bearing shaft) or bearing, or may be altered or turbid due to frictional heat, etc. Thus, deterioration is inevitable. Continued use of such lubricants will affect the rotation and bearings of the rotating spindle, which may cause chaining (deterioration of the lubricating oil due to contamination of foreign substances, etc. → damage to the rotating spindle and bearings → further contamination of foreign substances → rotation (Severe damage to the spindles and bearings) can lead to serious failure and destruction of the centrifuge.
Lubricating oil is heated by frictional heat due to high-speed rotation of the rotating spindle, etc., but if this is not cooled appropriately, it will change in quality and affect the rotation of the rotating spindle, resulting in damage to the bearing and the rotating spindle. .

  In order to achieve stable and smooth rotation of the rotation support shaft and the function of the bearing, it is necessary to supply a sufficient amount of lubricating oil into the housing box. However, if the housing box covering the bearing is not tightly sealed, the lubricating oil will be externally applied. In addition to leaking (scattering), the surroundings are not only soiled, but also lubricating oil is wasted, resulting in an increase in running cost. Of course, it leads to a shortage of lubricating oil, which inhibits the stable and smooth rotation of the rotating spindle and the functioning of the bearing, and induces a failure of the centrifuge.

  The present invention has been made to solve the above-described problems, and is a rotating device that rotates at a high speed (for example, a centrifugal separator, a centrifugal dehydrator, a centrifugal filtration separator, a rotary pressure separator, a screw press separator). , Filter press separators, drum screen separators, turbines, blowers, lathe machines, etc.) can be reliably supported, ensuring smooth and efficient rotation of the rotating shafts, and periodic inspections and parts of rotating equipment It is an object of the present invention to provide a rotating shaft support device for a rotating device that can be exchanged quickly and efficiently.

  In addition, the present invention can always stably supply a good quality and good lubricating oil to the bearing, prevent wear of the bearing, etc., can operate the rotating equipment appropriately and efficiently, and can extend the life of the rotating equipment itself. An object of the present invention is to provide a lubricating oil circulation system that can be used.

  A rotating shaft support device for a rotating device according to the present invention is supported in a base housing, an upper housing mounted on the base housing, a housing box formed by the base housing and the upper housing, and supports the rotating shaft of the rotating device. And a lubricating oil supplier that is disposed in the housing box and supplies lubricating oil.

  The base housing of the rotary shaft support device for a rotary device according to the present invention is characterized in that a groove that fits into a protrusion disposed on the outer periphery of the rotary shaft is provided.

  A guide plate is provided in the upper housing of the rotary shaft support device for a rotary device according to the present invention.

  The rotating device of the rotating shaft support device for a rotating device according to the present invention is a centrifuge that includes an outer body bowl, an inner body screw, a gear box, and a rotation drive machine, and separates the supplied stock solution into a solid and a liquid. Features.

  A lubricating oil circulation system according to the present invention includes a base housing, an upper housing to be mounted on the base housing, a bearing that is held in a housing box formed by the base housing and the upper housing, and supports a rotating shaft of a rotating device, And a rotating shaft support device for a rotating device, which is disposed in the housing box and includes a lubricating oil feeder for supplying lubricating oil, an oil storage tank for storing lubricating oil, an oil cooler for cooling the lubricating oil, and lubricating oil And a transfer pump for circulating the gas.

  The lubricating oil circulation system according to the present invention includes a filter for filtering the lubricating oil.

The base housing of the lubricating oil circulation system according to the present invention is provided with a groove into which a protrusion disposed on the outer periphery of the rotating shaft is fitted.

A guide plate is provided in the upper housing of the lubricating oil circulation system according to the present invention.

  The rotating device of the lubricating oil circulation system according to the present invention includes an outer body bowl, an inner body screw, a gear box, and a rotary drive machine, and is a centrifuge that separates the supplied stock solution into a solid and a liquid. .

According to the rotating shaft support device for a rotating device of the present invention, the following many effects can be obtained.
(1) Since a bearing that is housed and held in a housing box composed of a base housing and an upper housing can be sandwiched and assembled with the base housing by the upper housing, the rotating shaft of a rotating device that rotates at high speed can be reliably While being able to support, since lubricating oil is supplied to the inside of the housing box, smooth and efficient rotation of the rotating shaft can be ensured.
(2) A simple operation that simply removes the upper housing from the base housing of the housing box enables quick and efficient periodic inspections and replacement of parts that require precise and rigorous technology and work. it can.
(3) For this reason, not only can the rotating shaft and bearing of the rotating device be sufficiently maintained and properly maintained, but also the rotating device can be maintained for a long time, and the functions can be exhibited stably.
(4) Especially for centrifuges that require precise installation and installation in order to generate large gravitational acceleration at high speeds, periodic inspections and parts replacement can be easily performed, reducing the time, labor, and cost required for this. It is possible to always perform stable and safe driving.
(5) In addition, since the number of spare machines can be minimized, the installation cost, construction cost, and installation area can be reduced.
(6) Further, in the case of sludge treatment with a centrifugal separator, the operation is not delayed, so that the sludge can be prevented from being spoiled, and stable and efficient separation performance can be exhibited.
(7) Since the rotating body and the rotating shaft support device for rotating equipment can be separated easily compared to the conventional one, replace the rotating body with a spare machine if the rotating body needs to be repaired. Immediately, steady operation can be resumed.
(8) Although this apparatus is used in a so-called “forced lubrication system”, it can also be used in a so-called “splashing system, oil bath system”.

According to the lubricating oil circulation system of the present invention, in addition to the effects of the rotating shaft support device for rotating equipment, the following many effects can be obtained.
(1) A good and good lubricating oil can be stably supplied to the bearing at all times, so that the wear of the bearing can be prevented, the rotating equipment can be operated appropriately and efficiently, and the life of the rotating equipment itself can be extended. Is possible.
(2) Especially in centrifuges that rotate at a high speed as well as a large load, foreign matter such as metal powder generated due to wear or contact of the rotating spindle and bearings is mixed into the lubricating oil, frictional heat, etc. Lubricating oil changes in quality and becomes turbid, which not only reduces the effectiveness of the lubricating oil but also causes damage. However, according to the present invention, foreign substances mixed in the lubricating oil can be reliably removed and cooled. Therefore, good quality lubricating oil can always be supplied into the rotating shaft support device for rotating equipment, damage to the centrifuge can be prevented, and the centrifuge can be operated stably and efficiently.
(3) In order to achieve stable and smooth rotation of the rotating shaft and the function of the bearing, not only can lubricating oil be sufficiently supplied into the housing box, but also the leakage (scattering) of the lubricating oil and the surrounding contamination can be prevented. It is possible to reduce the running cost by suppressing the replenishment amount of the lubricating oil.
(4) Since the shortage of lubricating oil can be prevented, stable and smooth rotation of the rotating shaft and the function of the bearing can be secured, and the failure and damage of the centrifuge can be avoided.
(5) This system is used in a so-called “forced lubrication method”, but can also be adopted in a so-called “splashing method, oil bath method”.

Embodiment 1 FIG.
1 is a perspective view showing a rotating shaft support device for a rotating device according to Embodiment 1 of the present invention with a part cut away, and FIG. 2 is a perspective view showing an upper housing in FIG.
A rotating shaft support device for a rotating device (hereinafter referred to as “rotating shaft support device”) 1 according to Embodiment 1 includes a housing box 2 that can be divided into two vertically. The housing box 2 is formed of a base housing 3 fixed to a pedestal (not shown) and an upper housing 4 detachably mounted on the base housing 3, and a bearing 6 that supports the rotating shaft 5 of the rotating device. Holding.

  The base housing 3 comprises a concave groove formed on a semicircular inner peripheral surface, and a fitting concave portion 30 for fitting a bearing 6 for fitting a semicircular portion of the outer ring, and for fixing the base housing 3 to the pedestal. A fixing bolt hole 31 for inserting an anchor bolt (not shown), a bolt screwing hole 32 for screwing a fastening bolt 7 for fastening and fixing the upper housing 4, and lubricating oil in the housing box 2 It has a structure having an oil seal groove 35 into which an annular oil seal 44 for sealing so as not to leak out is fitted.

  The upper housing 4 is formed on a semicircular inner circumferential surface and has a symmetrical shape with the fitting recess 30 of the base housing 3, and is a fitting for mounting a bearing that fits the remaining semicircular portion of the outer ring of the bearing 6. An oil seal groove for fitting a mating recess 40, a bolt insertion hole 41 (see FIG. 2) through which the fastening bolt 7 is inserted, and an annular oil seal 44 that seals the lubricating oil in the housing box 2 from leaking out. 45. This is a so-called “sealed contact device (contact type seal)”.

  Therefore, in the rotary shaft support device 1 according to the first embodiment, the outer ring half-circumference portion of the bearing 6 that supports the rotary shaft 5 is fitted into the fitting recess 30 of the base housing 3 fixed to the pedestal with anchor bolts and nuts. After the fitting, the fitting recess 40 of the upper housing 4 is fitted to the remaining half-circumferential portion of the outer ring of the bearing 6, and in this state, the bolt screwing hole of the base housing 3 through the bolt insertion hole 41 of the upper housing 4. It is assembled by screwing and fastening the fastening bolt 7 to 32. In other words, the bearing 6 of the rotating shaft 5 is fitted into the fitting recess 30 of the base housing 3 and the fitting recess 40 of the upper housing 4 and is clamped and fixed between the base housing 3 and the upper housing 4 by the fastening bolt 7. The upper housing 4 can be removed from the base housing 3 by removing the fastening bolt 7.

  In the rotating shaft support device 1 assembled as described above, a lubricating oil supplier 9 that supplies lubricating oil between the inner ring and the outer ring of the bearing 6 is disposed in the housing box 2. A lubricating oil supply pipe 8 is connected to the lubricating oil supplier 9. A lubricating oil discharge pipe 10 is connected in the housing box 2.

  In the above description, the base housing 3 and the upper housing 4 are preferably casts such as FC200 and FC250, but may be anything as long as they are durable and can be processed. The upper housing 4 is usually mounted on the base housing 3 by aligning with an alignment mark, a reamer pin, or the like and stopped with two or four bolts. It is not a thing. Further, the base housing 3 is normally fixed to the pedestal with an anchor bolt, but is not limited to this as long as it can be reliably fixed to the pedestal.

The lubricating oil supplier 9 is preferably made of stainless steel having excellent corrosion resistance and capable of supplying lubricating oil directly to the bearing 6, but is not limited to this, and the lubricating oil is surely supplied to the housing box 2. As long as it can be supplied to For example, any structure may be used as long as the lubricant can be reliably supplied into the housing box 2, such as a nozzle having a tip, a nozzle disposed at the tip, and a rotatable one. .
In particular, when a lubricating oil injection nozzle is employed in the lubricating oil supply device 9, the lubricating oil sent from the lubricating oil transfer pump can be immediately and reliably injected onto the bearing 6, and the rotating shaft 5 can be stably and smoothly supplied. It is very effective for effective rotation and function of the bearing 6.
In the case of the so-called “splashing type, oil bath type”, a lubricating oil supply pipe (not shown) for supplying lubricating oil into the housing box 2 may be adopted as the lubricating oil supply unit 9.

  According to the rotary shaft support device 1 according to the first embodiment described above, the housing box 2 is configured to be divided into the upper and lower parts into the base housing 3 and the upper housing 4. The upper housing 4 can be easily removed from the base housing 3 simply by removing the fastening bolt 7 without removing a rotating device (for example, a centrifuge) from the pedestal. Therefore, the housing of the rotating shaft support device 1 can be removed. The inside of the box 2 can be easily inspected, and the bearing 6 in the housing box 2 can be exchanged neatly, so that there is an effect that the maintenance workability of the rotating device is remarkably improved.

  In particular, when the rotating shaft support device 1 of the first embodiment is used in a centrifuge that rotates at high speed after sludge is supplied, the housing box 2 can be divided into two parts as described above. During periodic inspection (overhaul) of the machine, it is only necessary to remove the centrifuge body from the base housing 3, and it is only necessary to return the centrifuge body to the base housing 3 after the overhaul. As described above, since the base housing 3 can be kept in the original state and the centrifuge can be periodically inspected, it is possible to omit the work of taking a precise level (horizontal) as performed during the installation and installation of the centrifuge.

  As described above, since the housing box 2 can be divided into two parts, it is possible not only to carry out daily maintenance work reliably, but also to easily check the condition of the center of the machine such as the state of the bearing 6 and the rotation shaft 5. It is also useful for early detection of abnormalities. Further, there is an effect that the rotating body requiring repair and the spare rotating body can be easily replaced, and the steady operation can be resumed promptly.

  In addition, when the centrifuge is overhauled, the centrifuge removed from the base housing 3 can be re-installed and installed (positioning, etc.) very easily, and the work can be efficiently performed. Further, daily maintenance and overhaul can be carried out appropriately and reliably, and this makes it possible to maintain the centrifuge for a long period of time and to exhibit its functions stably. In addition, two annular grooves surrounding the outer peripheral surface of the rotating shaft 5 formed by the oil seal grooves 35 provided on both sides of the base housing 3 and the oil seal grooves 45 provided on both sides of the upper housing 4 are provided. Since the oil seals (Z-type seals, etc.) 44 are attached and sealed, the lubricating oil that tends to leak out of the housing box 2 (appears to scatter) can remain in the housing box 2. Moreover, the effect that the surrounding pollution by the leakage of lubricating oil and the waste of lubricating oil can be suppressed is also acquired.

  Furthermore, the centrifuge provided with the rotating shaft support device 1 of the first embodiment is rare and high quality, which is less than 10% of what is manufactured by a regular engineer according to a standardized procedure. Maintenance, replacement, and overhaul using components such as bearings have the effect that the centrifuge can be maintained for a longer period of time and can function stably. In other words, an operator who is not skilled in the technology of the centrifuge that does not include the rotating shaft support device for rotating equipment according to the present invention appropriately uses general-purpose products for maintenance, replacement, and overhaul. This compromises long-term maintenance, even stable operation, but the present invention is effective in avoiding this situation.

Embodiment 2. FIG.
3 is a partially cutaway perspective view showing a rotary shaft support device according to Embodiment 2 of the present invention, FIG. 4 is an exploded perspective view showing a housing box in FIG. 3, and FIG. 5 is a base portion in FIGS. FIG. 3 is an enlarged plan view showing a housing. The same parts as those in FIGS.
In the rotary shaft support device 1 according to the second embodiment, a plurality of grooves (hereinafter referred to as “oil grooves”) 33 and 43 are provided on both inner peripheral surfaces of the base housing 3 and the upper housing 4, respectively. 3 is provided with an oil drain hole 34 (see FIG. 5) and an oil drain 11 communicating with the oil drain hole 34 and the housing box 2 (base housing 3). This is greatly different from the first form.

  More specifically, in the second embodiment, in the oil grooves 33 and 43, the lubricating oil supplied into the housing box 2 from the lubricating oil supplier 9 leaks out (scatters) from the housing box 2 to the outside. ), The oil grooves 33 of the base housing 3 are formed on both sides of the base housing 3 and are adjacent to each other in the axial direction of the rotary shaft 5 (2 to 5). This is composed of a semicircular arc groove 33a (1-2, usually 1), 33b (1-3, usually 2). In these oil grooves 33a and 33b, an oil groove (hereinafter referred to as "inner oil groove") 33a located on the innermost side of the housing box 2 is an oil groove (hereinafter referred to as "outer side") of the inner oil groove 33a. The depth of the groove is deeper than 33b).

Similar to the oil groove 33 of the base housing 3, the oil groove 43 of the upper housing 4 is also formed on both sides of the upper housing 4 and is adjacent to the axial direction of the rotating shaft 5 (2 to 5, usually). 3) semi-circular oil grooves 43a (1-2, usually 1), 43b (1-3, usually 2) (see FIG. 3). Of these oil grooves 43a and 43b, an oil groove (hereinafter referred to as "inner oil groove") 43a located on the innermost side of the housing box 2 is an oil groove (hereinafter referred to as "outer side") of the inner oil groove 43a. The groove depth is deeper than 43b).
In a state where the upper housing 4 is mounted on the base housing 3, the outer periphery of the rotary shaft 5 is formed by the inner oil groove 33 a and the outer oil groove 33 b of the base housing 3 and the inner oil groove 43 a and the outer oil groove 43 b of the upper housing 4. An oil groove having a circular cross section surrounding the surface is formed.

  As will be described in detail in Embodiment 3 below, concentric circular hook-shaped protrusions 12 (FIG. 6) are formed on the outer periphery of the rotating shaft 5 of the rotating device so as to be rotatably fitted in the oil grooves 33 and 43 of the housing box 2. And a structure that blocks (seals) the lubricating oil from leaking out of the housing box 2 to the outside.

The oil drain hole 34 is for sequentially discharging the lubricating oil remaining in the oil groove 33, and the oil drain hole 34 has a structure for returning the lubricating oil remaining in the oil groove 33 into the housing box 2. It is desirable. Therefore, the oil drain hole 34 is a hole that communicates the oil groove 33 and the inside of the housing box 2.
Such oil drain holes 34 are usually about 1 to 30 mm in diameter, and in the lowest position of the oil groove 33 of the base housing 3, that is, in the second embodiment, the depth of the inner oil groove 33a is the deepest. It is provided at the bottom. The oil drain hole 34 may be provided in one or more than one oil groove 33. When there are a plurality of oil grooves 33a and 33b as described above, the inner oil groove 33a is not necessarily provided. In any case, the position and structure are not limited to this as long as the lubricating oil flowing into the oil grooves 33a and 33b can be appropriately removed.

The oil drain 11 communicating with the oil drain hole 34 and the inside of the housing box 2 is set up in accordance with a high level (oil level) of lubricating oil in a desired oil groove 33 (inner oil groove 33a in the second embodiment). It is effective to make the shape of the upper tube. In the second embodiment, the oil drain 11 having a rising tube shape is provided in which the tip of the oil drain 11 whose base end is connected to the oil drain hole 34 is raised and opened in the housing box 2. Thus, it is desirable that the oil drain 11 has a rising pipe shape, but the oil drain 11 is not limited to this as long as the level of the lubricating oil in the oil groove 33 can be kept constant.
The oil drain 11 has a diameter of about 1 to 30 mm, may be made of aluminum, stainless steel, or the like. The oil drain 11 may be made of the same material as the base housing 3 or may be integrally formed with the base housing 3. In short, any oil drain 11 may be used as long as it can be connected to the oil drain hole 34 and the lubricating oil in the oil groove 33 can be returned and removed into the housing box 2.

  According to the second embodiment described above, the oil grooves 33 and 43 that are circular annular grooves when the both are assembled are formed on both sides of the base housing 3 and the upper housing 4 in parallel with these side surfaces. Since the concentric circular hook-shaped projections 12 fitted to this are provided on the outer periphery of the rotating shaft 5, they are supplied from the lubricating oil supplier 9 into the housing box 2 and try to leak out from the housing box 2. Lubricating oil (which is about to scatter) can be blocked by the protrusions 12 and can remain in the oil grooves 33 and 43. Therefore, peripheral oil caused by leakage of lubricating oil from the inside of the housing box 2 to the outside can be prevented. There is an effect that contamination and waste of lubricating oil can be suppressed.

  An oil drain hole 34 is provided in the oil groove 33 of the base housing 3, the oil drain hole 34 and the inside of the housing box 2 are connected by an oil drain 11, and the oil drain 11 serves to lubricate the oil groove 33. Therefore, the lubricating oil that has flowed into the oil groove 33 can be returned into the housing box 2 by the oil drain hole 34 and the oil drain 11, and the oil drain 11 Since the lubricating oil in the groove 33 can be maintained at a certain level high, the lubricating oil in the oil groove 33 overflows to the outside, or the rotation of the rotary shaft 5 and the bearing 6 is hindered due to insufficient lubricating oil. There is an effect that it can be prevented.

Embodiment 3 FIG.
6 is a perspective view showing a main part of a rotary shaft support device according to Embodiment 3 of the present invention. The same parts as those in FIGS.
In the third embodiment, as described above, a concentric circular hook-shaped protrusion (flange) 12 is integrally provided on the outer periphery of the rotating shaft 5 of the rotating device according to the second embodiment, and the protrusion 12 is formed on the housing box 2. The oil grooves 33 and 43 (in FIG. 6, the oil groove 43 is not shown because the upper housing 4 is removed, but the oil groove 43 is shown in FIG. 3) are rotatably fitted, so-called “ A detailed description will be given of the structure called “non-sealing contact device (non-contact type seal)”.

  Considering that the protrusions 12 are in contact with the oil grooves 33, 43, a material that is easy to process and flexible, such as brass or stainless steel, can be appropriately employed, and may be directly processed on the rotating shaft 5. Alternatively, it may be separately manufactured as a bush and fixed to the rotating shaft 5 by welding or the like.

  According to the third embodiment described above, the lubricating oil that is about to leak (spray) from the inside of the housing box 2 is blocked by the protrusions 12 and stays in the oil grooves 33 and 43, whereby the housing box 2 can surely prevent the lubricating oil in 2 from leaking out or scattering to the outside, and can also lubricate the protrusions 12 rotating in the oil grooves 33 and 43 in conjunction with the rotating shaft 5. There is.

  Then, as described in the second embodiment, the oil drain hole 34 provided in the oil groove 33 (inner oil groove 33a) of the base housing 3, and the standing oil hole communicating with the inside of the housing box 2 are provided. Since the oil drain 11 has an upper tube shape, even if a large amount of lubricating oil flows into the oil grooves 33 and 43, the lubricating oil can be returned into the housing box 2 by the oil drain 11. In addition, since the lubricating oil in the oil grooves 33 and 43 can be maintained at a certain level high, the lubricating oil leaks from the housing box 2 to the outside, and the surrounding soil and lubricating oil due to the lubricating oil leaking out. This has the effect of efficiently and reliably suppressing wastefulness.

  In the third embodiment, the protrusion 12 is provided on the outer periphery of the rotary shaft 5 and the protrusion 12 is fitted to the oil groove 33 of the base housing 3 and the oil groove 43 of the upper housing 4. Instead of 12, one or more fitting recesses (not shown) having an annular recess structure are provided on the outer periphery of the rotating shaft 5, and the fitting recess and the side wall of the oil groove 33 of the base housing 3 and the upper housing It is good also as a structure which fits the side wall of the oil groove 43 of No. 4, and the effect similar to the said Embodiment 3 can be anticipated also in this case.

Embodiment 4 FIG.
7 is a perspective view showing the housing box of the rotary shaft support device according to Embodiment 4 of the present invention in an exploded state, and FIG. 8 is an enlarged plan view showing the base housing in FIG. 7, which is the same as FIGS. Parts will be described with the same reference numerals.
The fourth embodiment is largely different from the second embodiment in that plate-like guide plates 13 that hang from both radial sides of the upper housing 4 are provided on both axial sides of the upper housing 4.

  The guide plate 13 does not damage members or the like in the housing box 2 when the upper housing 4 is assembled and joined to the base housing 3, and the inner side of the inner oil groove 33 a in the oil groove 33 of the base housing 3. A small gap formed between the joint surfaces of the base housing 3 and the upper housing 4 at the connecting portion between the oil groove 33 of the base housing 3 and the oil groove 43 of the upper housing 4 is provided so as to be smoothly joined to the wall surface. It is shielded from the inside of the box 2.

  As such a guide plate 13, it is possible to arrange one or two or more rectangular or arc-shaped plates in the upper housing 4 with a thickness of about 1 to 10 mm. It may be made of stainless steel or the like, and may be made of the same material as the upper housing 4 or may be integrally formed with the upper housing 4, but is not necessarily limited thereto. The guide plate 13 may be provided on the base housing 3 as necessary.

  According to the fourth embodiment described above, in the connecting portion between the oil groove 33 of the base housing 3 and the oil groove 43 of the upper housing 4, a slight gap between the joint surfaces of the base housing 3 and the upper housing 4 is provided in the housing. Since the guide plate 13 that shields from the inside of the box 2 is provided in the upper housing 4, the lubricating oil supplied from the lubricating oil supplier 9 into the housing box 2 splatters against the bearing 6 and the rotating shaft 5 and scatters. It is possible to prevent the guide plate 13 from leaking through a slight gap between the joint surfaces of the upper housing 4 and the upper housing 4, and thus prevent peripheral contamination and waste of the lubricating oil due to external leakage of the lubricating oil. There is an effect that can be.

Embodiment 5 FIG.
FIG. 9 is a schematic diagram showing a lubricating oil circulation system according to Embodiment 5 of the present invention. The same parts as those in FIGS.
The lubricating oil circulation system 100 according to the fifth embodiment includes the rotary shaft support device 1 having the same structure as any of the first to fourth embodiments, and an oil storage tank 14 that stores lubricating oil. Basically, the lubricating oil in the oil storage tank 14 is supplied by the transfer pump 16 from the lubricating oil supply 9 to the bearing 6 in the housing box 2 via the mesh filter 25, the filter 17, the oil cooler 18 and the measuring device 19. It has a structure.

  More specifically, the transfer pump 16 is provided in the lubricating oil transfer pipe 15 that connects the lubricating oil in the oil storage tank 14 and the inlet of the filter 17, and the lubricating oil suction port of the lubricating oil transfer pipe 15 is provided in the lubricating oil suction port. A mesh filter 25 is attached, the outlet of the filter 17 and the inlet of the oil cooler 18 are connected by piping, and the outlet of the oil cooler 18 and the lubricating oil supplier 9 are connected by a lubricating oil supply pipe 8. A measuring device 19 is disposed in the lubricating oil supply pipe 8. The oil storage tank 14 is connected to a lubricating oil discharge pipe 10 connected to the base housing 3 of the housing box 2.

  The oil storage tank 14 is a tank in which the lubricating oil stored in the base housing 3 of the housing box 2 is introduced and stored from the lubricating oil discharge pipe 10 of the base housing 3 by natural flow or by drawing with a pump (not shown). It is. As the oil storage tank 14, a square or cylindrical tank having corrosion resistance (for example, made of stainless steel) is usually used. However, the oil storage tank 14 is not limited to this, and any oil storage tank may be used as long as it can stably store the lubricating oil. In order to prevent corrosion of the tank bottom of the oil storage tank 14 (such as generation of rust due to water mixing), the inner surface of the tank may be treated with a metal surface.

  Normally, when the lubricating oil in the oil storage tank 14 is deteriorated during overhaul of a rotating device or when a certain operating time has elapsed, the lubricating oil is pulled out and replaced or replenished with new lubricating oil (one It is desirable to replace the entire amount of lubricating oil once a year). In addition, if moisture, foreign matter (for example, a minute metal piece) or turbidity is observed in the lubricating oil during inspection or the like, the entire amount of the lubricating oil is immediately replaced. Moreover, when water | moisture content resulting from the dew condensation etc. in the oil storage tank 14 is confirmed by daily inspection, it uses a drain cock (not shown) provided in the oil storage tank 14 quickly (with lubricating oil). It is desirable to eliminate moisture.

  As described above, the oil storage tank 14 is provided with an inspection window and a water level gauge (oil level gauge) in addition to the drain cock, so that appropriate daily inspection can be performed and stable circulation of the lubricating oil can be ensured. . The oil storage tank 14 may be provided with a measuring device capable of grasping properties such as a thermometer and a turbidimeter as required.

The transfer pump 16 usually pumps up the lubricating oil in the oil storage tank 14, filters the lubricating oil with a filter (oil filter) 17, and cools it with an oil cooler 18, and then the housing box of the rotary shaft support device 1. One or two or more units are provided in consideration of the scale of the lubricating oil circulation system and the lubricating oil flow rate.
The transfer pump 16 is disposed on the outside of the oil storage tank 14 such as a side surface or an upper surface. As the transfer pump 16, for example, an electric trochoid pump is used. However, the transfer pump 16 is not limited to this and may be any pump that can stably and reliably transfer the lubricating oil.

  Normally, it is preferable that the lubricating oil be transferred (returned) from the housing box 2 of the rotary shaft support device 1 to the oil storage tank 14 from the viewpoint of energy saving, but it is necessary for installation and operation. If there is, a lubricant return pump (not shown) may be provided in the lubricant discharge pipe 10 for returning the lubricant in the base housing 3 to the oil storage tank 14.

The filter 17 is an oil filter that removes foreign substances and suspended substances mixed in the lubricating oil in order to keep the lubricating oil supplied from the oil storage tank 14 into the housing box 2 normal. The scale of the lubricating oil circulation system 100 In consideration of the flow rate of lubricating oil, one or more units are provided.
The filter 17 may be either a metal mesh filter disposed in a pipe in the oil storage tank 14 or a line filter disposed outside such as a side surface or an upper surface of the oil storage tank 14, or both of them. May be. The filter 17 is not limited to this, as long as it can reliably remove foreign matters and contaminants of about 10 μm. Although not shown, the filter 17 has a lubricating oil outlet and a lubricating oil supply 9. It may be provided immediately before.
When abnormalities such as a decrease in the flow rate of lubricant, an increase in pressure, an increase in temperature, etc. are detected, the filter 17 may be clogged, so that maintenance work such as cleaning the filter (oil filter) 17 is performed promptly. It is.

The oil cooler 18 is for cooling the lubricating oil that lubricates the rotating shaft 5 that rotates at a high speed to an appropriate temperature (25 to 40 ° C.), and takes into account the scale of the lubricating oil circulation system and the lubricating oil flow rate. Or provide two or more. Usually, a water-cooled type is used.
Such an oil cooler 18 is usually preferably a water-cooled type (eg, a stainless steel tube) disposed outside such as a side surface or an upper surface of the oil storage tank 14, but is not limited thereto, and may be installed at a location close to a rotating device. An air-cooled type or the like may be used as long as the temperature of the lubricating oil can be adjusted appropriately and reliably.

  As the measuring device 19, various instruments for grasping the properties and state of the lubricating oil for the maintenance of the lubricating oil and the proper operation of the system, for example, the oil temperature gauge, the oil pressure gauge, the oil quantity meter, the oil level of the lubricating oil It is desirable to use a meter, a turbidimeter, a viscometer, etc., and these measuring devices can be used for daily inspections and operation control of rotating devices. In order to perform the operation control, the output side of the measuring device 19 is connected to the controller 20. The controller 20 can appropriately control the operation of a chemical injection facility of the centrifuge body, for example, by an output control signal based on an input signal from the measuring device 19.

Here, each of the oil temperature meter, the oil pressure meter, the oil amount meter, the turbidity meter, and the viscometer used as the measuring device 19 will be described.
The oil thermometer can confirm the properties of the lubricating oil and the condition in the rotary shaft support device 1, generate abnormal frictional heat in the rotary shaft support device 1 due to a lubrication failure, and abnormalities in the filter 17 and the oil cooler 18. It is important to grasp the deterioration of the lubricating oil. As the oil temperature meter, a normal thermometer with a contact is used, but the oil temperature meter is not limited to this as long as it can stably and reliably measure the oil temperature.

  The oil pressure gauge can check the operation status of each facility and the status in the rotary shaft support device 1, an abnormality of the filter 17 and the oil cooler 18, an insufficient amount of lubricating oil in the rotary shaft support device 1, and an abnormality of the transfer pump 16. It is important for grasping. As the oil pressure gauge, a pressure gauge with a pressure switch is used. However, the pressure gauge is not limited to this as long as it can stably and reliably measure the oil pressure.

  The oil meter can also grasp the abnormality of the filter 17 and the oil cooler 18, the excess and deficiency of the lubricating oil amount in the rotary shaft support device 1, and the abnormality of the transfer pump 16. As the oil amount meter, an oil signal flow meter with a contact (reed switch method) is used, but it is not limited to this as long as it can stably and reliably measure the oil amount.

  Even with a turbidimeter, it is possible to confirm changes in the properties of the lubricating oil and wear within the rotating shaft support device 1. An optical turbidimeter is used as the turbidimeter, but the turbidimeter is not limited to this as long as it can stably and reliably measure the turbidity of the lubricating oil.

  Even with a viscometer, it is possible to confirm changes in the properties of the lubricating oil (deterioration, abnormally high temperature, contamination with foreign matter). As the viscometer, a vibration type or rotary type viscometer is used, but the viscometer is not limited to this as long as it can stably and reliably measure the viscosity of the lubricating oil.

Further, an oil level gauge 21 may be used as the measuring device 19 provided in the oil storage tank 14, and the oil level gauge 21 may reduce or unevenly distribute the lubricating oil due to leakage of lubricating oil or clogging in piping or various mechanical equipment. I can grasp it. As the oil level gauge 21, a differential pressure type, electrode type, float type oil level gauge or gauge is used. However, the oil level gauge is not limited to this as long as the oil level in the oil storage tank 14 can be measured stably and reliably. is not.

  In general, the various measuring devices 19 (including the oil level gauge 21) described above are preferably installed in a pipe that supplies filtered and cooled lubricating oil into the housing box 2 of the rotary shaft support device 1. As a result, it is possible to confirm the proper supply of lubricating oil and to quickly recognize the abnormality. Note that the lubricating oil supplied from the oil storage tank 14 may be measured, and is not limited to this as long as the lubricating oil can be measured stably and reliably. Various measurements may be performed at a plurality of points, and by providing a plurality of measuring devices 19 and sequentially measuring the lubricating oil, a more reliable system operation can be performed.

  The various measuring devices 19 are used for checking and recording the operation status in daily inspection work, and can be used for operation control of the rotating device. That is, if there is a measurement value (high temperature, high pressure, low flow rate, etc.) of the measuring device 19, the signal is sent to the controller (controller) 20, and a rotating device such as a centrifuge main body or a chemical supply facility attached thereto, It can control the operation of the transfer conveyor, sludge supply pump, etc. (emergency stop, etc.), helps maintain and manage damage and destruction of rotating equipment and incidental facilities, and builds an important security circuit (abnormality monitoring) for rotating equipment. can do.

  For example, when the controller 20 receives measurement signals such as a temperature rise (80 ° C.), a pressure rise, and a oil amount drop of the lubricating oil, it is set as “major failure” of the rotating equipment. In the case of a centrifuge, when the measuring device 19 detects an abnormality, the controller 19 that has received the abnormality stops the free run of the centrifuge, stops the chemical supply pump, stops the sludge supply pump, etc. The control signal is transmitted to the rotating device, whereby each mechanical equipment of the rotating device is immediately stopped and can be prevented from being broken or damaged (in order to protect the centrifuge, the transfer pump 16 of the lubricating oil circulation system). And the cooling water supply equipment for the oil cooler 18 can be stopped sequentially after the centrifuge is stopped). Note that one or a plurality of objects to be measured by the measuring device 19 may be combined, and one or two or more transmissions to the controller 20 may be performed. The present invention is not limited to this as long as it can be stopped or the operation speed and the rotation speed can be reduced.

  In the lubricating oil circulation system 100 according to the fifth embodiment described above, good lubricating oil can be reliably and efficiently supplied into the rotating shaft support device 1 of the rotating device, and the lubricating oil accumulated at the bottom of the base housing 3 is appropriately drawn. The oil is extracted and stored in the oil storage tank 14. The lubricating oil in the oil storage tank 14 is filtered by the transfer filter 16 through the mesh filter 25, then pumped up, and filtered again by, for example, an oil filter (line filter) of the filter 17, and then at a predetermined temperature by the oil cooler 18. And is supplied into the rotating shaft support device 1 of the rotating device to lubricate the rotating shaft 5 of the rotating device.

  In the lubricating oil circulation system 100 of the fifth embodiment, since the measuring device 19 and the controller 20 are provided as appropriate, the circulation of the lubricating oil and the properties of the lubricating oil are measured, and an abnormal signal is sent to the controller 20 when an abnormality occurs. The controller 20 immediately stops the operation of rotating equipment (such as centrifuges) and incidental equipment (such as chemical injection pumps and sludge supply pumps) and prevents serious breakdowns, breakage, and destruction. There is an effect that can be done.

Embodiment 6 FIG.
FIG. 10 is a schematic diagram showing a lubricating oil circulation system according to Embodiment 6 of the present invention. The same parts as those in FIG.
In the lubricating oil circulation system 100 of the sixth embodiment, as the measuring device 19, an oil level gauge 21 is disposed on the side surface of the oil storage tank 14, and an oil pressure gauge 22, an oil temperature gauge 23, and a lubricating oil supply pipe 8 are provided. The point that the oil amount meter (lubricating oil flow meter) 24 is provided is largely different from that of the fifth embodiment. Other structures are the same as those of the fifth embodiment.

  According to the lubricating oil circulation system 100 of the sixth embodiment, the oil level gauge 21 grasps the reduction or uneven distribution of the lubricating oil due to the leakage of the lubricating oil or clogging in the piping and various mechanical facilities as described above. The operation status of each facility and the situation in the rotary shaft support device 1 can be confirmed by the hydraulic pressure gauge 22 and the effect that can be obtained, the abnormality of the filter 17 and the oil cooler 18, the amount of lubricating oil in the rotary shaft support device 1 The effect of being able to grasp the shortage and the abnormality of the transfer pump 16 and the oil thermometer 23 can confirm the properties of the lubricating oil and the situation inside the rotary shaft support device 1, and the inside of the rotary shaft support device 1 due to lubrication failure The effect of being able to grasp the generation of abnormal frictional heat, the failure of the filter 17 and the oil cooler 18, the deterioration of the lubricating oil, and the abnormality and rotation of the filter 17 and the oil cooler 18 by the oil amount meter 24 Shaft support Lubricating oil amount excess and deficiency of in apparatus 1, it is possible to obtain an effect that can grasp the abnormality of the transfer pump 16.

  Further, by transmitting measurement signals from the oil level gauge 21, oil pressure gauge 22, oil temperature gauge 23, and oil quantity gauge 24 to the controller 20 in FIG. 9, an output control signal from the controller 20 is obtained. There is an effect that it is possible to appropriately control the rotating device.

Embodiment 7 FIG.
FIG. 11 is a schematic diagram showing a lubricating oil circulation system according to Embodiment 7 of the present invention. The same parts as those in FIGS.
In the lubricating oil circulation system 100 according to the seventh embodiment, the oil level gauge 21 is disposed above the oil storage tank 14, and the lubricating oil suction port of the lubricating oil transfer pipe (lubricating oil pumping pipe) 15 in the oil storage tank 14. A mesh filter is attached as a filter 17, and a lubricating oil transfer pipe (lubricating oil pumping pipe) 15 and a transfer pump 16 are connected to each other. The other structure is the same as that of the sixth embodiment. It is. In the case of the lubricating oil circulation system according to the seventh embodiment, the same effect as in the sixth embodiment can be obtained.

Embodiment 8 FIG.
FIG. 12 shows a centrifugal separator to which any one of the rotating shaft support devices for rotating equipment according to the first to fourth embodiments of the present invention and any one of the lubricating oil circulation systems according to the fifth to fifth embodiments is applied. FIG.
The centrifugal separator 50 according to the eighth embodiment includes an outer body bowl 51, an inner body screw 52 rotatably accommodated in the outer body bowl 51, a gear box (differential speed adjusting machine) 53, An undiluted solution supplied to the inner cylinder screw 52, comprising a rotation drive machine 54 </ b> A for rotating the outer cylinder bowl 51 and the inner cylinder screw 52, and a rotation adjusting drive machine 54 </ b> B for adjusting the number of rotations of the inner cylinder screw 52. It has a basic structure that separates (raw sludge) into solid and liquid.

In the centrifugal separator 50 having such a basic structure, the outer body bowl 51 and the inner body screw 52 individually have rotation support shafts (rotation shafts) 51A and 52A, and the rotation support shaft 51A is the rotation shaft. It is supported by the support device 1. The rotating shaft support device 1 has the same structure as that of any one of the first to fourth embodiments, and the lubricating oil circulation system 100 according to any one of the fifth to seventh embodiments. I have.
In FIG. 12, the rotary shaft support device 1 that supports the rotary spindle 51 </ b> A is provided on both sides of the centrifuge 50, but the present invention is not limited to this and may be provided on either one. . Further, the lubricating oil circulation system 100 is constructed for one rotating shaft support device 1 (left side on the paper surface of FIG. 12), but the lubricating oil circulation is also performed for the other rotating shaft support device 1 (right side on the paper surface of FIG. 2). The system 100 may be constructed, and furthermore, the lubricating oil circulation system 100 that also serves as the two rotary shaft support devices 1 may be constructed.

More specifically, the centrifugal separator 50 is disposed in a casing 56, and a separation liquid discharge chamber 57 and a sludge discharge chamber 58 are formed at both ends of the casing 56. The separation liquid discharge chamber 57 has a separation liquid discharge port 57a at the lower end, and the sludge discharge chamber 58 has a sludge discharge port 58a at the lower end.
One of the rotation support shafts 51A of the outer bowl 51 protrudes from one end of the casing 56 (right end on the paper surface of FIG. 12) and is supported by the rotation shaft support device 1, and the other is also the other end of the casing 56 (paper surface of FIG. 12). It protrudes from the upper left end) and is supported by the rotary shaft support device 1 and connected to the gear box 53.
A rotation support shaft 52A of the inner cylinder screw 52 and a sludge supply pipe 55 are arranged inside one of the rotation support shafts 51A of the outer body bowl 51 (on the right side in FIG. 12). Further, the rotation support shaft 52 </ b> A of the inner cylinder screw 52 extends to the inside of the other rotation shaft 51 </ b> A (on the left side in FIG. 12) and is connected to the gear box 53.

The outer trunk bowl 51 is rotated by the drive of the rotary drive unit 54A via the transmission belt 59a, is rotatably arranged in the outer trunk bowl 51, and the inner trunk screw 52 supported by the inner trunk bearing is also the outer trunk bowl. Rotate with 51. The rotational speed of the inner cylinder screw 52 is adjusted by transmitting the drive of the rotation adjusting drive 54B to the gear box 53 via the transmission belt 59b.
The raw liquid (raw sludge) supplied into the centrifuge 50 through the sludge supply pipe 55 is separated into a separated product (concentrated sludge and dehydrated sludge) and a separated liquid (concentrated separated liquid and dehydrated separated liquid) by centrifugal force. , Discharged outside the machine.

Next, a typical procedure and an outline of work contents when overhauling (disassembling-inspecting-assembling) the centrifuge 50 according to the eighth embodiment will be described below.
1. Power check
1-1 Turn off the power of the rotary drive 54A, etc., post a safety sign (operation prohibited, etc.) on the control panel surface, and then start disassembling the centrifuge 50.
2. Disassembly procedure of centrifuge
2-1. In order to secure a moving space in which the rotating body (the inner cylinder screw 52, the rotation support shafts 52A and 52B, the gear box 53, etc.) of the centrifuge 50 can be carried out, the package cover is removed.
2-2 Remove the main belt cover, differential speed belt cover, and gear box cover 53a, and then the transmission belt 59 and differential speed belt.
2-3 After removing the holder of the sludge supply pipe 55, the sludge supply pipe 55 is pulled out and the casing 56 of the centrifuge 50 main body is opened.
The upper housing 4 of the rotating shaft support device 1 that supports the rotating support shaft 51A of the 2-4 centrifuge 50 is removed from the base housing 3 using a chain block or the like.
3. Removing the rotating body
3-1 Attach shipping bolts to the centrifuge base and attach lifting wires to the rotating body.
3-2 Lift the rotating body using a chain block.
3-3 The main bearings (2 places) should be cured with a transparent wrap when lifting to prevent leakage of lubricant during movement.
3-4 If a rotating body is removed and carried out, a qualified engineer will follow a standardized procedure, and will produce less than 10% of rare, high-quality (P5 to P6 class) bearings 6 etc. After the replacement and the inspection of various parts, the rotating shaft support device 1 is fitted and cured so that foreign matter, dust and the like do not enter.
3-5 Lubricating oil circulation system 100 will be replaced, and components will be inspected and repaired appropriately.
4). Repair of rotating body
4-1 The carried out rotating body will be repaired, such as replacement, inspection and repair of consumable parts at the factory.
5). Loading of rotating body
5-1 The upper housing 4 of the rotating shaft support device 1 applied to the centrifuge 50 is removed, and the repaired and carried-in rotating body is installed at the original position.
5-2 Attach various devices and covers in order.
5-3 Supply lubricating oil into the cleaned oil storage tank 14.
5-4 Liquid packing is applied to the contact surface between the base housing 3 and the upper housing 4, and the rotary shaft support device 1 is assembled together with the rotary spindle 51A (the upper housing 4 is mounted on the base housing 3).
6). Commissioning
6-1 Turn on the power and manually operate the centrifuge 50, the lubricating oil circulation system 100, and various devices to check the situation.
6-2 Check that there is no problem by adjusting the rotation of the centrifugal separator 50 and the circulation amount of the lubricating oil as appropriate.
Thus, the overhaul of the centrifuge 50 is completed.

  Also in the centrifuge 50 of the eighth embodiment described above, when the rotary shaft support device 1 is inspected, the upper housing 4 of the housing box 2 in the rotary shaft support device 1 is removed without disassembling the centrifuge 50. There is an effect that the inspection in the rotary shaft support device 1 can be easily and skillfully performed. In addition, since appropriate lubricating oil can be stably supplied into the rotating shaft support device 1 and abnormalities such as lubricating oil can be detected quickly, the centrifugal separator 50 can be operated stably and efficiently. There is an effect that failure, breakage and destruction can be prevented.

Embodiment 9 FIG.
13 is a sectional view showing a screw press separator according to Embodiment 9 of the present invention. The screw press separator 60 according to the ninth embodiment includes a casing 64 having a separation liquid discharge port 64a and a sludge discharge port 64b at a lower portion, a cylindrical filter 61 disposed in the casing 64, and an inside of the filter 61. The main part is comprised from the rotating screw 62 arrange | positioned in this. In such a screw press separator 60, the rotation support shaft (rotation shaft) 63 of the rotation screw 62 is supported by the rotation shaft support device 1 outside the casing 64 in the axial direction. As the rotating shaft support device 1, a rotating shaft support device having the same structure as that of any one of the first to fourth embodiments is applied. Reference numeral 65 in FIG. 13 denotes a sludge supply pipe that is provided at the center of one end of the rotary support shaft 63 and supplies raw sludge toward the rotary screw 62 inside the filter 61. This is a cleaning nozzle that is disposed at the top and injects cleaning water onto the filter 61. The filter 61 may be a punching metal or a metal screen. The undiluted solution supplied into the screw press separator 60 is separated into a separated product and a separated solution by the filtering action of the filter 61 by the squeezing of the rotary screw 62, and is discharged outside the device.

Also in the case of the screw press separator 60 of the ninth embodiment, when the rotary shaft support device 1 is inspected, the upper housing 4 of the housing box 2 in the rotary shaft support device 1 is not disassembled without disassembling the screw press separator 60 itself. There is an effect that the inspection inside the rotary shaft support device 1 can be easily performed by simply removing the shaft.
It should be noted that the lubricating oil circulation system 100 may be constructed for the rotating shaft support device 1 of the rotating support shaft (rotating shaft) 63, thereby enabling stable supply of the lubricating oil and detection of abnormality, and the screw press separator 60 can be installed. In addition to being able to operate stably and efficiently, there is an effect that it is possible to prevent a serious failure, breakage or destruction.

Embodiment 10 FIG.
14 is a schematic sectional view showing a turbine according to Embodiment 10 of the present invention. In the turbine 70 according to the tenth embodiment, both end sides of a rotating support shaft (rotating shaft) 73 of a rotor (rotating body) 72 disposed in the outer casing 71 are connected to both sides of the outer casing 71 via seal portions 74. The both ends of the rotation support shaft 73 are supported outside by the rotation shaft support device 1.

Therefore, in the case of the turbine 70 of the tenth embodiment, when the rotary shaft support device 1 is inspected, the turbine 70 can be rotated by simply removing the upper housing 4 of the housing box 2 without disassembling the turbine 70. There is an effect that the inspection in the shaft support device 1 can be easily performed.
It should be noted that the lubricating oil circulation system 100 may be constructed for the rotating shaft support device 1 of the rotating support shaft (rotating shaft) 73, thereby enabling stable supply of the lubricating oil and detection of abnormalities, thereby stabilizing the turbine 70. In addition to being able to operate efficiently, it has the effect of preventing serious failures, breakage, and destruction.

Embodiment 11 FIG.
FIG. 15 is a schematic sectional view showing a blower according to Embodiment 11 of the present invention. In the blower 80 of this eleventh embodiment, both end portions of a rotation support shaft (rotation shaft) 83 of a rotor (rotary blade) 82 disposed in a casing 81 are projected outward from both sides of the casing 81, and the rotation support shaft thereof. The both ends of 83 are supported by the rotating shaft support device 1. Also in this eleventh embodiment, as the rotary shaft support device 1, a rotary shaft support device having the same structure as any one of the first to fourth embodiments is applied. The casing 81 has a suction port 81a and a discharge port 81b.

Therefore, also in the case of the blower 80 according to the eleventh embodiment, when the rotary shaft support device 1 is inspected, the upper housing 4 of the housing box 2 in the rotary shaft support device 1 is attached to the outside of the casing 81 without disassembling the blower 80. Thus, there is an effect that the inspection in the rotary shaft support device 1 can be easily performed by simply removing it.
Note that the lubricating oil circulation system 100 may be constructed with respect to the rotating shaft support device 1 of the rotating support shaft (rotating shaft) 83, thereby enabling a stable supply of the lubricating oil and detection of an abnormality, thereby stabilizing the blower 80. In addition to being able to operate efficiently, it has the effect of preventing serious failures, breakage, and destruction.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a partially cutaway rotary shaft support device for a rotary device according to Embodiment 1 of the present invention. It is a perspective view which shows the upper housing in FIG. It is a perspective view which partially cuts and shows the rotating shaft support apparatus for rotary devices by Embodiment 2 of this invention. It is a disassembled perspective view which shows the housing box in FIG. FIG. 5 is an enlarged plan view showing a base housing in FIGS. It is a perspective view which shows the principal part of the rotating shaft support apparatus for rotary devices by Embodiment 3 of this invention. It is a perspective view which shows the housing box of the rotating shaft support apparatus for rotary devices by Embodiment 4 of this invention in an exploded state. FIG. 8 is an enlarged plan view showing a base housing in FIG. 7. It is a schematic diagram which shows the lubricating oil circulation system by Embodiment 5 of this invention. It is a schematic diagram which shows the lubricating oil circulation system by Embodiment 6 of this invention. FIG. 11 is a schematic diagram showing a lubricating oil circulation system according to Embodiment 7 of the present invention. One showing the centrifuge which applied either the rotating shaft support apparatus for rotary devices by Embodiment 1-Embodiment 4 of this invention and the lubricating oil circulation system by Embodiment 5-Embodiment 7 mentioned above. It is a part notch front view. It is sectional drawing which shows the screw press separator by Embodiment 9 of this invention. It is a schematic sectional drawing which shows the turbine by Embodiment 10 of this invention. It is a schematic sectional drawing which shows the blower by Embodiment 11 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating-shaft support apparatus 2 for rotary equipment Housing box 3 Base housing 4 Upper housing 5 Rotating shaft 6 Bearing 7 Fastening bolt 8 Lubricating oil supply pipe 9 Lubricating oil supply pipe 10 Lubricating oil discharge pipe 11 Oil drain 12 Protrusion 13 Guide plate 14 Oil storage Tank 15 Lubricating oil transfer pipe 16 Transfer pump 17 Filter 18 Oil cooler 19 Measuring device 20 Controller 21 Oil level gauge 22 Oil pressure gauge 23 Oil temperature gauge 24 Oil quantity gauge 25 Mesh filter 30 Fitting recess 31 Fixing bolt hole 32 Bolt screw Joint hole 33 Oil groove 33a Inner oil groove 33b Outer oil groove 34 Oil drain hole 35 Oil seal groove 40 Fitting recess 41 Bolt insertion hole 43 Oil groove 43a Inner oil groove 43b Outer oil groove 44 Oil seal (Z-type seal)
45 Oil seal groove 50 Centrifuge 51 Outer shell bowl 51A Rotating spindle (Rotating shaft)
52 Inner body screw 52A Rotating spindle (Rotating shaft)
53 Gear box 54A Rotation drive 54B Rotation adjustment drive 55 Sludge supply pipe 56 Casing 57 Separation liquid discharge chamber 57a Separation liquid discharge port 58 Sludge discharge chamber 58a Sludge discharge port 59a, 59b Transmission belt 60 Screw press separation machine 61 Filter 62 Rotation Screw 63 Rotating spindle (Rotating shaft)
64 Casing 64a Separation liquid outlet 64b Sludge outlet 65 Sludge supply pipe 66 Cleaning nozzle 70 Turbine 71 External casing 72 Rotor (rotary body)
73 Rotating spindle (Rotating shaft)
74 Seal part 80 Blower 81 Casing 81a Suction port 81b Discharge port 82 Rotor (Rotating blade)
83 Rotating spindle (Rotating shaft)

Claims (9)

Base housing,
An upper housing mounted to the base housing;
A bearing which is held in a housing box formed by the base housing and the upper housing and supports a rotating shaft of a rotating device;
A rotating shaft support device for a rotating device, comprising: a lubricating oil supply unit that is disposed in the housing box and supplies lubricating oil. The base housing includes
The rotary shaft support device for a rotary device according to claim 1, wherein a groove that fits into a protrusion disposed on an outer periphery of the rotary shaft is provided. In the upper housing,
The rotating shaft support device for a rotating device according to claim 1, wherein a guide plate is provided. The rotating device is
Equipped with an outer body bowl, inner body screw, gear box and rotary drive,
The rotating shaft support device for a rotating device according to any one of claims 1 to 3, wherein the rotating device is a centrifuge for solid-liquid separation of the supplied stock solution. Base housing,
An upper housing mounted to the base housing;
A rotating device comprising a bearing that is held in a housing box formed by the base housing and the upper housing and supports a rotating shaft of the rotating device, and a lubricating oil supplier that is disposed in the housing box and supplies lubricating oil. A rotating shaft support device;
An oil storage tank for storing lubricating oil;
An oil cooler for cooling the lubricating oil;
A lubricating oil circulation system comprising: a transfer pump for circulating lubricating oil. The lubricating oil circulation system according to claim 5, further comprising a filter for filtering the lubricating oil. The base housing includes
The lubricating oil circulation system according to claim 5 or 6, wherein a groove into which a protrusion disposed on an outer periphery of the rotating shaft is fitted is provided. In the upper housing,
The lubricating oil circulation system according to any one of claims 5 to 7, wherein a guide plate is provided. The rotating device is
Equipped with an outer body bowl, inner body screw, gear box and rotary drive,
The lubricating oil circulation system according to any one of claims 5 to 8, wherein the lubricating oil circulation system is a centrifuge for solid-liquid separation of the supplied stock solution.

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