WO2013183114A1 - Surface liquid recovery device - Google Patents

Surface liquid recovery device Download PDF

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Publication number
WO2013183114A1
WO2013183114A1 PCT/JP2012/064453 JP2012064453W WO2013183114A1 WO 2013183114 A1 WO2013183114 A1 WO 2013183114A1 JP 2012064453 W JP2012064453 W JP 2012064453W WO 2013183114 A1 WO2013183114 A1 WO 2013183114A1
Authority
WO
WIPO (PCT)
Prior art keywords
surface layer
drive shaft
liquid
impeller
recovery apparatus
Prior art date
Application number
PCT/JP2012/064453
Other languages
French (fr)
Japanese (ja)
Inventor
山本　英雄
Original Assignee
広和エムテック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 広和エムテック株式会社 filed Critical 広和エムテック株式会社
Priority to PCT/JP2012/064453 priority Critical patent/WO2013183114A1/en
Priority to KR1020147023543A priority patent/KR101862732B1/en
Priority to JP2014519723A priority patent/JP5956574B2/en
Priority to CN201280073209.XA priority patent/CN104302579A/en
Publication of WO2013183114A1 publication Critical patent/WO2013183114A1/en
Priority to HK15104547.3A priority patent/HK1203922A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/066—Floating-units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
    • H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/007—Contaminated open waterways, rivers, lakes or ponds

Definitions

  • the present invention relates to a surface layer liquid recovery apparatus.
  • the surface layer liquid recovery device is used, for example, to separate machine oil or foreign matters that have floated on the surface liquid of the cutting liquid due to a difference in specific gravity with the liquid such as the cutting liquid from the surface liquid.
  • Patent Document 1 As this type of surface liquid recovery apparatus, the techniques described in the following Patent Document 1 and Patent Document 2 have been proposed. These surface layer liquid recovery apparatuses are used by being connected to a separation tank.
  • the separation tank is for separating machine oil, foreign matter, and the like (hereinafter simply referred to as “foreign matter”) from a liquid surface layer such as a cutting fluid.
  • the surface layer liquid recovery device is used connected to the separation tank so as to transfer the surface layer liquid to the separation tank.
  • the surface layer liquid recovery device includes a suction port portion configured to suck the liquid surface layer liquid following the liquid level and a transfer pump for transferring the surface layer liquid flowing in from the suction port portion to the separation tank.
  • a transfer pump for transferring the surface layer liquid flowing in from the suction port portion to the separation tank.
  • an electric motor for driving the transfer pump an AC induction motor such as a capacitor starting motor or a squirrel-cage three-phase induction motor is employed.
  • an AC induction motor is generally used for the surface layer liquid recovery apparatus, and the AC induction motor has low efficiency. For this reason, in order to ensure efficiency required as a transfer pump, a corresponding alternating current induction motor is used. As a result, the AC induction motor becomes larger, and the transfer pump must be enlarged as much as the AC induction motor becomes larger. For these reasons, it has been difficult to reduce the size of the surface layer liquid recovery device in the surface layer liquid recovery device using the AC induction motor.
  • an object of the present invention is to provide a surface layer liquid recovery apparatus that can be miniaturized.
  • the surface layer liquid recovery device of the present invention comprises a suction port portion configured to suck the liquid surface layer liquid following the water level of the liquid level in the liquid tank, and the surface layer liquid flowing in from the suction port portion.
  • the DC brushless motor includes a rotation drive shaft, and the rotation drive shaft is supported by a slide bearing so as to be rotatable about an axis. Can do.
  • the rotary drive shaft may be formed of ceramic.
  • the transfer pump includes an impeller, the impeller is connected to the rotary drive shaft so as to rotate about the rotary drive shaft, and is connected to the DC brushless motor side.
  • a sealing device that suppresses entry of foreign matter is provided between the impeller and the rotary drive shaft can be employed.
  • one end side portion in which the impeller is installed, the other end side portion in which the DC brushless motor is installed, one end side portion and the other end side portion are configured to be partitioned.
  • the impeller includes a side surface and an insertion recess formed on the side surface, and the sealing device is configured to be mounted in the insertion recess. Can do.
  • the sealing device includes a disc-shaped seal body and an annular lip seal protruding from a side surface of the seal body, and is externally attached to the rotary drive shaft.
  • the impeller includes a side surface and an insertion recess formed in the side surface, the seal body is accommodated in the insertion recess, and the lip seal is formed on an outer peripheral portion of the insertion hole of the partition wall.
  • a contacting configuration can be employed.
  • the impeller includes a side surface and a leg portion protruding from the side surface, and the partition includes an annular annular recess formed in an outer peripheral portion of the insertion hole. It is possible to employ a configuration in which the leg portion is inserted into the annular recess.
  • FIG. 1 is a use state diagram of a surface layer liquid recovery apparatus representing an embodiment of the present invention.
  • FIG. 2 is an enlarged sectional view of the surface layer liquid recovery apparatus.
  • the surface liquid recovery apparatus 1 sucks the surface layer liquid 3 out of the liquid (cutting liquid) in the liquid tank (cutting liquid tank for machine tool) 2, and from the sucked surface layer liquid 3. It is for transferring to a separation part (hereinafter referred to as “separation tank”) 4 for separating foreign matter.
  • the surface layer liquid recovery apparatus 1 includes an apparatus main body 5, a suction port portion 8, a suction pipe 9, and a transfer pump 10.
  • the apparatus body 5 is integrally formed from one end side portion 15 and the other end side portion 17.
  • the one end side portion 15 is an outer casing that forms the liquid feeding region 14.
  • the other end side portion 17 is an outer housing for forming a drive unit accommodation region 16 that accommodates the drive unit of the transfer pump 10.
  • the one end side portion 15 and the other end side portion 17 are partitioned by a partition wall 18.
  • the partition wall 18 includes an annular portion 19 and a lid portion 20.
  • the annular portion 19 is fixed by sandwiching an outer peripheral portion between opposed surfaces of the one end side portion 15 and the other end side portion 17.
  • the lid portion 20 is attached to the annular portion 19 by being screwed into a central opening formed at the center of the annular portion 19.
  • an insertion hole 23 is formed through which one end of the rotary drive shaft 13 of the transfer pump 10 can be inserted so as to protrude into the liquid feeding region 14.
  • An annular recess 24 for inserting the leg portion 11 a of the impeller 11 of the transfer pump 10 is formed concentrically with the insertion hole 23 on one end face of the lid portion 20 on the outer peripheral portion of the insertion hole 23.
  • the impeller 11 is cantilevered by the rotational drive shaft 13.
  • a mounting recess 21 for mounting the bearing 29 of the transfer pump 10 is formed concentrically with the insertion hole 23 on the outer peripheral portion of the insertion hole 23 on the other end surface of the lid part 20.
  • the mounting recess 21 is formed to communicate with the insertion hole 23.
  • a cylindrical body portion 25 extending from the partition wall 18 toward the inside of the other end side portion 17 of the apparatus main body 5 is formed integrally with the partition wall 18 as a member concentric with the other end side portion 17.
  • the liquid feeding region 14 is an internal space of the one end side portion 15 of the one end side portion 15 and the other end side portion 17 attached with the partition wall 18 interposed therebetween, and the surface layer liquid 3 is allowed to flow from the suction port portion 8 to separate tanks.
  • (Separation unit) 4 is a liquid transport path having a function of transporting to 4.
  • the one end side portion 15 is used as a region in which the impeller 11 is housed.
  • the other end side portion 17 of the apparatus main body 5 forms the drive unit accommodation region 16 in which the drive unit 12 for rotating the impeller 11 is housed, and also serves as a case for the drive unit 12.
  • a mounting recess 22 for mounting the bearing 30 is formed at the center of the back wall 26 of the cylindrical body portion 25.
  • the suction port 8 is attached to the upper part of the bellows cylinder 6 and is configured to follow the water level of the liquid level 7 in the liquid tank 2 by the expansion and contraction of the bellows cylinder 6.
  • the upper part of the suction inlet 8 is an opening, and the surface layer liquid is sucked from the opening.
  • the suction pipe 9 is configured to communicate and connect the one end side portion 15 of the apparatus main body 5 and the lower portion of the bellows cylinder 6.
  • the suction pipe 9 is formed in an elbow shape so as to open upward and laterally.
  • the suction pipe 9 is formed at the one end side portion 15 of the apparatus main body 5 with the end portion that opens upward communicating with the lower portion of the bellows tube 6 and the end portion that opens toward the side.
  • the suction side mounting portion 35 is communicated with.
  • the transfer pump 10 is disposed inside the apparatus main body 5.
  • the transfer pump 10 includes the impeller 11 and the drive unit (electric motor) 12 that rotates the impeller 11 about its axis.
  • the impeller 11 has a function of causing the surface layer liquid 3 to flow from the suction port portion 8 to the bellows cylinder 6 and the one end side portion 15 and to move toward the separation tank 4 side by rotating around the axis.
  • the drive unit 12 includes an inner rotor type DC brushless motor.
  • the DC brushless motor includes a rotary drive shaft 13, a permanent magnet 27 disposed on the outer periphery of the rotary drive shaft 13, an induction coil 28 disposed on the outer periphery of the permanent magnet 27, and a bearing that receives the rotary drive shaft 13. 29,30.
  • the rotary drive shaft 13 is made of ceramic, and is inserted through an insertion hole 23 formed at the center of the lid portion 20.
  • the impeller 11 is externally fitted and fixed to one end of the rotary drive shaft 13 protruding into the liquid feeding region 14.
  • a midway portion of the rotational drive shaft 13 is supported by the bearing 29 provided in the mounting recess 21 of the lid portion 20 so as to be rotatable about the axis.
  • the other end of the rotary drive shaft 13 is supported by the bearing 30 mounted in the mounting recess 22 of the inner wall 26 of the cylindrical body 25 so as to be rotatable about the axis.
  • Each bearing 29 and 30 is a sliding bearing.
  • the permanent magnet 27 is fixed to the outer peripheral portion of the body portion 25 a of the cylindrical body portion 25.
  • the permanent magnet 27 and the induction coil 28 are opposed to each other inside and outside in the radial direction with the body portion 25a of the cylindrical body portion 25 interposed therebetween.
  • the surface layer liquid recovery device 1 includes a sealing device 31.
  • the sealing device 31 suppresses entry of foreign matter into the drive unit 12 side.
  • a sealing device 31 is provided between the impeller 11 and the rotary drive shaft 13 and between the impeller 11 and the lid portion 20 to prevent foreign matter from entering the drive portion 12 (inside the cylindrical portion 25). .
  • An insertion recess 34 for mounting the sealing device 31 is formed on the side surface of the impeller 11 in the radial direction of the leg portion 11a.
  • the sealing device 31 is formed in an annular shape, and is inserted through the rotary drive shaft 13.
  • the sealing device 31 is integrally formed from a disc-shaped seal body 32 and an annular lip seal 33 that protrudes from the side surface of the seal body 32 to one side. Since the lip seal 33 of the sealing device 31 is in contact with the outer peripheral portion of the insertion hole 23, it is possible to suppress a state in which foreign matter enters from the insertion hole 23.
  • the apparatus main body 5 and the separation tank 4 are connected in communication by a discharge pipe 37 attached to the discharge side mounting portion 36 of the one end side portion 15 formed in the apparatus main body 5.
  • a recursive pipe 38 for returning the surface liquid 3 to the liquid tank 2 is connected to the separation tank 4.
  • the drive unit 12 is connected with a power cord 39 for electrically connecting the drive unit 12 to a direct current power source (not shown).
  • recovery apparatus 1 has the advantage that it can be used in the limited use place which is not equipped with a commercial power source.
  • the impeller 11 rotates with the rotary drive shaft 13, and the suction port 8 follows the water level of the liquid level 7 by the lifting force of the transfer pump 10.
  • the surface liquid 3 containing machine oil or the like is sucked from the suction port 8.
  • the surface layer liquid 3 is sucked into the liquid feeding area 14 from the bellows cylinder 6, subsequently moved from the liquid feeding area 14 to the discharge pipe 37, and further fed into the separation tank 4.
  • the machine oil or the like is removed (separated) in the separation tank 4 due to the difference in specific gravity, and the surface layer liquid 3 from which the machine oil or the like has been removed is returned to the liquid tank 2 from the recursive pipe 38 again.
  • the impeller 11 has a structure that is cantilevered by the rotary drive shaft 13, so that there is no member that obstructs movement when the surface liquid 3 moves from the liquid feeding region 14 to the discharge pipe 37. . For this reason, the movement of the surface liquid 3 is performed very smoothly.
  • the surface liquid 3 is always kept in a state in which foreign matters are removed, and the liquid (liquid for cutting) in the liquid tank 2 can be used in a good state.
  • the DC brushless motor is smaller than the AC induction motor such as a capacitor starting motor and a squirrel-cage three-phase induction motor having the same efficiency. For this reason, the whole surface liquid collection
  • the surface liquid 3 includes not only machine oil but also metal powder (magnetic powder such as iron powder) generated when the machine tool is cut. It is.
  • a DC brushless motor is used for the drive unit 12 of the surface layer liquid recovery apparatus 1, and a permanent magnet 27 is provided in the cylindrical body 25. And if the metal powder mixed in the surface layer liquid 3 adheres to the permanent magnet 27, the efficiency of the transfer pump 10 will fall or it may not drive.
  • the sealing device 31 is provided between the impeller 11 and the rotary drive shaft 13 and between the impeller 11 and the lid portion 20. For this reason, it is possible to reliably suppress the state in which the machine oil or the foreign matter enters the drive unit 12 side, and it is possible to prevent a decrease in efficiency and failure of the transfer pump 10.
  • the surface layer liquid recovery apparatus 1 has the suction port portion 8 configured to suck the liquid surface layer liquid 3 following the water level of the liquid level in the liquid tank 2, and the suction port portion.
  • 8 includes a transfer pump 10 for transferring the surface layer liquid 3 flowing from 8 to a separation tank 4 that separates the liquid into liquid and foreign matter mixed in the liquid.
  • the transfer pump 10 is a drive for driving the transfer pump 10.
  • a DC brushless motor is provided.
  • the transfer pump 10 is driven by the driving of the DC brushless motor, and the liquid surface layer liquid 3 in the liquid tank 2 is sucked from the suction port 8, and the surface layer liquid 3 is transferred to the separation tank 4 to be liquid and foreign matter. And separated.
  • the DC brushless motor is smaller than a capacitor starting motor having the same efficiency or an AC induction motor such as a squirrel-cage three-phase induction motor. For this reason, the efficiency of the transfer pump required for the recovery of the surface layer liquid 3 is ensured after the entire surface layer liquid recovery apparatus 1 is downsized. Further, by using the direct current brushless motor, the surface layer liquid recovery apparatus 1 can be used using a storage battery even in a place where there is no commercial power source.
  • the direct current brushless motor includes the rotation drive shaft 13, and the rotation drive shaft 13 is rotatably supported around the axis by a slide bearing. For this reason, the surface liquid recovery apparatus 1 (drive unit 12) is not easily affected by foreign matter. Therefore, the failure of the surface layer liquid recovery apparatus 1 is suppressed by that amount, and the life is prolonged.
  • the rotary drive shaft 13 is made of ceramic.
  • the surface liquid recovery apparatus 1 (drive unit 12) is not easily affected by foreign matter. Therefore, the failure of the surface layer liquid recovery apparatus 1 is suppressed by that amount, and the life is prolonged.
  • the transfer pump 10 includes an impeller 11, and the impeller 11 is connected to the rotary drive shaft 13 so as to rotate around the rotary drive shaft 13, and is connected to the DC brushless motor side.
  • a sealing device 31 that suppresses intrusion of foreign matter is provided between the impeller 11 and the rotary drive shaft 13.
  • the one end side part 15 which incorporates the impeller 11, the other end side part 17 which comprises a DC brushless motor, the one end side part 15, and the other end side part 17 are divided.
  • the impeller 11 is attached to one end portion of the rotary drive shaft 13 having one end portion and the other end portion, and the rotary drive shaft 13 is configured. Is inserted into the insertion hole 23 of the partition wall 18 so that the other end portion of the rotary drive shaft 13 is disposed in the other end side portion 17. 11 and the partition wall 18.
  • the impeller 11 includes a side surface and an insertion recess 34 formed on the side surface, and the sealing device 31 is mounted in the insertion recess 34.
  • the sealing device 31 includes a disk-shaped seal body 32 and an annular lip seal 33 protruding from the side surface of the seal body 32, and is fitted on the rotary drive shaft 13.
  • the impeller 11 includes a side surface and an insertion concave portion 34 formed on the side surface, the seal body 32 is accommodated in the insertion concave portion 34, and the lip seal 33 is disposed outside the insertion hole 23 of the partition wall 18. Touch the periphery.
  • the impeller 11 includes a side surface and a leg portion 11 a protruding from the side surface, and the partition wall 18 includes an annular annular recess 24 formed in the outer peripheral portion of the insertion hole 23.
  • the leg portion 11 a is inserted into the annular recess 24.
  • the surface layer liquid recovery apparatus 1 is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. Moreover, the surface layer liquid collection

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Auxiliary Devices For Machine Tools (AREA)
  • Removal Of Floating Material (AREA)

Abstract

A surface liquid recovery device of the present invention is provided with the following: a suction port configured so as to suck in the surface liquid of the liquid inside a liquid tank following the water level of the surface of the liquid; and a transfer pump for transferring the surface liquid that has flowed in from the suction port to a separation part that separates the liquid and foreign matter mixed in with the liquid. The transfer pump is provided with a DC brushless motor as a drive part that drives the transfer pump.

Description

表層液回収装置Surface liquid recovery device
　本発明は、表層液回収装置に関する。表層液回収装置は、例えば切削用液などの液体との比重差によって切削用液の表層液に浮上した機械油や異物などを表層液から分離するために用いられる。 The present invention relates to a surface layer liquid recovery apparatus. The surface layer liquid recovery device is used, for example, to separate machine oil or foreign matters that have floated on the surface liquid of the cutting liquid due to a difference in specific gravity with the liquid such as the cutting liquid from the surface liquid.
　この種の表層液回収装置として、下記特許文献１および特許文献２に記載された技術が提案されている。これらの表層液回収装置は、分離タンクに接続して用いられる。分離タンクは、切削用液などの液体の表層液から機械油や異物等（以下単に「異物」と称す）を分離するためのものである。表層液回収装置は、分離タンクに表層液を移送するよう、分離タンクに接続して用いられる。 As this type of surface liquid recovery apparatus, the techniques described in the following Patent Document 1 and Patent Document 2 have been proposed. These surface layer liquid recovery apparatuses are used by being connected to a separation tank. The separation tank is for separating machine oil, foreign matter, and the like (hereinafter simply referred to as “foreign matter”) from a liquid surface layer such as a cutting fluid. The surface layer liquid recovery device is used connected to the separation tank so as to transfer the surface layer liquid to the separation tank.
　表層液回収装置は、液面の水位に追随して液体の表層液を吸込むよう構成された吸込口部と、該吸込口部から流入した表層液を分離タンクへ移送するための移送ポンプとを備える。該移送ポンプを駆動する電動機として、コンデンサ起動電動機や、かご形三相誘導電動機等の交流誘導電動機が採用されている。 The surface layer liquid recovery device includes a suction port portion configured to suck the liquid surface layer liquid following the liquid level and a transfer pump for transferring the surface layer liquid flowing in from the suction port portion to the separation tank. Prepare. As an electric motor for driving the transfer pump, an AC induction motor such as a capacitor starting motor or a squirrel-cage three-phase induction motor is employed.
　ところで近年、この種の表層液回収装置を用いる一対象である工作機械用切削液槽は、小型化、あるいは低水面化がなされる傾向にある。したがって、工作機械用切削液槽の小型化あるいは低水面化に倣って、表層液回収装置もまた、小型化が望まれている。 By the way, in recent years, cutting fluid tanks for machine tools, which are one target using this type of surface liquid recovery apparatus, tend to be downsized or have a low water surface. Therefore, in accordance with the miniaturization or low water surface of the cutting fluid tank for machine tools, miniaturization of the surface layer liquid recovery device is also desired.
　しかしながら、一般に表層液回収装置には交流誘導電動機が用いられており、交流誘導電動機は低効率である。このため、移送ポンプとして必要な効率を確保するためには、相応の交流誘導電動機が用いられる。そうなると交流誘導電動機が大型化してしまい、交流誘導電動機が大型化した分だけ移送ポンプも大型化せざるをえない。このような理由から、交流誘導電動機を用いる表層液回収装置では、表層液回収装置の小型化が難しかった。 However, an AC induction motor is generally used for the surface layer liquid recovery apparatus, and the AC induction motor has low efficiency. For this reason, in order to ensure efficiency required as a transfer pump, a corresponding alternating current induction motor is used. As a result, the AC induction motor becomes larger, and the transfer pump must be enlarged as much as the AC induction motor becomes larger. For these reasons, it has been difficult to reduce the size of the surface layer liquid recovery device in the surface layer liquid recovery device using the AC induction motor.
日本国特許第４２９１８７３号公報Japanese Patent No. 4291873 日本国特許第４３４７４０９号公報Japanese Patent No. 4347409
　そこで本発明は、小型化を図り得る表層液回収装置の提供を目的とする。 Therefore, an object of the present invention is to provide a surface layer liquid recovery apparatus that can be miniaturized.
　本発明の表層液回収装置は、液槽内にある液体の液面の水位に追随して前記液体の表層液を吸込むよう構成された吸込口部と、該吸込口部から流入した表層液を、液体と該液体に混入している異物とに分離する分離部へ移送するための移送ポンプとを備え、該移送ポンプは、該移送ポンプを駆動させる駆動部として、直流ブラシレスモータを備えている。 The surface layer liquid recovery device of the present invention comprises a suction port portion configured to suck the liquid surface layer liquid following the water level of the liquid level in the liquid tank, and the surface layer liquid flowing in from the suction port portion. A transfer pump for transferring the liquid to a separation unit that separates the liquid and foreign matter mixed in the liquid, and the transfer pump includes a direct current brushless motor as a drive unit for driving the transfer pump. .
　本発明の表層液回収装置に係る一態様として、前記直流ブラシレスモータは、回転駆動軸を備え、該回転駆動軸は、滑り軸受により軸心回りに回転自在に支持されている構成を採用することができる。 As one aspect of the surface layer liquid recovery apparatus according to the present invention, the DC brushless motor includes a rotation drive shaft, and the rotation drive shaft is supported by a slide bearing so as to be rotatable about an axis. Can do.
　本発明の表層液回収装置に係る他態様として、前記回転駆動軸は、セラミックにより形成されている構成を採用することができる。 As another aspect of the surface layer liquid recovery apparatus of the present invention, the rotary drive shaft may be formed of ceramic.
　本発明の表層液回収装置に係る他態様として、前記移送ポンプは、インペラを備え、該インペラは、前記回転駆動軸回りに回転するよう該回転駆動軸に連結され、前記直流ブラシレスモータ側への異物の侵入を抑制する密封装置が、インペラと回転駆動軸との間に設けられている構成を採用することができる。 As another aspect of the surface liquid recovery apparatus according to the present invention, the transfer pump includes an impeller, the impeller is connected to the rotary drive shaft so as to rotate about the rotary drive shaft, and is connected to the DC brushless motor side. A configuration in which a sealing device that suppresses entry of foreign matter is provided between the impeller and the rotary drive shaft can be employed.
　本発明の表層液回収装置に係る他態様として、前記インペラを内装する一端側部と、前記直流ブラシレスモータを内装する他端側部と、一端側部及び他端側部を区画するよう構成され挿通孔が形成された隔壁とを有した装置本体を備え、前記インペラは、一端部及び他端部を備えた前記回転駆動軸の前記一端部に取り付けられ、前記回転駆動軸の前記一端部が前記一端側部内に、前記回転駆動軸の前記他端部が前記他端側部内に配置されるよう、前記隔壁の挿通孔に挿通されており、前記密封装置は、前記インペラと隔壁との間に設けられている構成を採用することができる。 As another aspect relating to the surface layer liquid recovery apparatus of the present invention, one end side portion in which the impeller is installed, the other end side portion in which the DC brushless motor is installed, one end side portion and the other end side portion are configured to be partitioned. An apparatus main body having a partition wall formed with an insertion hole, and the impeller is attached to the one end portion of the rotary drive shaft having one end portion and the other end portion, and the one end portion of the rotary drive shaft is In the one end side portion, the other end portion of the rotary drive shaft is inserted into the insertion hole of the partition wall so that the other end portion is disposed in the other end side portion, and the sealing device is provided between the impeller and the partition wall. It is possible to adopt the configuration provided in the above.
　本発明の表層液回収装置に係る他態様として、前記インペラは、側面と、該側面に形成される挿入凹部とを備え、前記密封装置は、前記挿入凹部内に装着される構成を採用することができる。 As another aspect of the surface liquid recovery apparatus of the present invention, the impeller includes a side surface and an insertion recess formed on the side surface, and the sealing device is configured to be mounted in the insertion recess. Can do.
　本発明の表層液回収装置に係る他態様として、前記密封装置は、円盤状のシール本体と、該シール本体の側面から突出する環状のリップシールとを備え、前記回転駆動軸に外嵌装着するよう構成され、前記インペラは、側面と、該側面に形成された挿入凹部とを備え、前記シール本体は、前記挿入凹部に収容され、前記リップシールは、前記隔壁の挿通孔の外周辺部に接触する構成を採用することができる。 As another aspect of the surface liquid recovery apparatus according to the present invention, the sealing device includes a disc-shaped seal body and an annular lip seal protruding from a side surface of the seal body, and is externally attached to the rotary drive shaft. The impeller includes a side surface and an insertion recess formed in the side surface, the seal body is accommodated in the insertion recess, and the lip seal is formed on an outer peripheral portion of the insertion hole of the partition wall. A contacting configuration can be employed.
　本発明の表層液回収装置に係る他態様として、前記インペラは、側面と、該側面から突出する脚部とを備え、前記隔壁は、前記挿入孔の外周部に形成された環状の環状凹部を備え、前記脚部は、前記環状凹部内に挿入されている構成を採用することができる。 As another aspect of the surface liquid recovery apparatus according to the present invention, the impeller includes a side surface and a leg portion protruding from the side surface, and the partition includes an annular annular recess formed in an outer peripheral portion of the insertion hole. It is possible to employ a configuration in which the leg portion is inserted into the annular recess.
図１は、本発明の一実施形態を表す表層液回収装置の使用状態図である。FIG. 1 is a use state diagram of a surface layer liquid recovery apparatus representing an embodiment of the present invention. 図２は、同表層液回収装置の拡大断面図である。FIG. 2 is an enlarged sectional view of the surface layer liquid recovery apparatus.
　以下、本発明の一実施形態に係る表層液回収装置を、図１および図２を用いて説明する。これらの図に示すように、表層液回収装置１は、液槽（工作機械用切削液槽）２内にある液体（切削用液）のうち表層液３を吸い込んで、吸い込んだ表層液３から異物を分離するための分離部（以下「分離タンク」と称する）４に移送するためのものである。表層液回収装置１は、装置本体５と、吸込口部８と、吸込管９と、移送ポンプ１０とを備えている。 Hereinafter, a surface layer liquid recovery apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. As shown in these drawings, the surface liquid recovery apparatus 1 sucks the surface layer liquid 3 out of the liquid (cutting liquid) in the liquid tank (cutting liquid tank for machine tool) 2, and from the sucked surface layer liquid 3. It is for transferring to a separation part (hereinafter referred to as “separation tank”) 4 for separating foreign matter. The surface layer liquid recovery apparatus 1 includes an apparatus main body 5, a suction port portion 8, a suction pipe 9, and a transfer pump 10.
　装置本体５は、一端側部１５と他端側部１７とから一体的に形成されている。一端側部１５は、液送領域１４を形成する外筐体である。他端側部１７は、移送ポンプ１０の駆動部を収容する駆動部収容領域１６を形成するための外筐体である。 The apparatus body 5 is integrally formed from one end side portion 15 and the other end side portion 17. The one end side portion 15 is an outer casing that forms the liquid feeding region 14. The other end side portion 17 is an outer housing for forming a drive unit accommodation region 16 that accommodates the drive unit of the transfer pump 10.
　一端側部１５および他端側部１７は、隔壁１８によって区画されている。隔壁１８は、環状部１９と蓋部２０とから構成されている。環状部１９は、一端側部１５と他端側部１７との対向面間に外周部が挟まれることで固定される。蓋部２０は、環状部１９の中心に形成された中心開口に螺合することで、環状部１９に取付けられている。 The one end side portion 15 and the other end side portion 17 are partitioned by a partition wall 18. The partition wall 18 includes an annular portion 19 and a lid portion 20. The annular portion 19 is fixed by sandwiching an outer peripheral portion between opposed surfaces of the one end side portion 15 and the other end side portion 17. The lid portion 20 is attached to the annular portion 19 by being screwed into a central opening formed at the center of the annular portion 19.
　蓋部２０の中心には、移送ポンプ１０が有する回転駆動軸１３の一端部側を、液送領域１４に突出するよう挿通させ得る挿通孔２３が形成されている。蓋部２０の一端面において、挿通孔２３の外周部に、移送ポンプ１０が有するインペラ１１の脚部１１ａを挿入するための環状凹部２４が、挿通孔２３と同心に形成されている。このように、インペラ１１は、回転駆動軸１３に片持ち支持されている。 At the center of the lid 20, an insertion hole 23 is formed through which one end of the rotary drive shaft 13 of the transfer pump 10 can be inserted so as to protrude into the liquid feeding region 14. An annular recess 24 for inserting the leg portion 11 a of the impeller 11 of the transfer pump 10 is formed concentrically with the insertion hole 23 on one end face of the lid portion 20 on the outer peripheral portion of the insertion hole 23. Thus, the impeller 11 is cantilevered by the rotational drive shaft 13.
　蓋部２０の他端面において、挿通孔２３の外周部に、移送ポンプ１０が有する軸受２９を装着するための装着凹部２１が、挿通孔２３と同心に形成されている。装着凹部２１は、挿通孔２３に連通するよう形成されている。隔壁１８から装置本体５の他端側部１７の内部に向けて延長される筒体部２５が、他端側部１７と同心の部材として、隔壁１８に一体的に形成されている。 A mounting recess 21 for mounting the bearing 29 of the transfer pump 10 is formed concentrically with the insertion hole 23 on the outer peripheral portion of the insertion hole 23 on the other end surface of the lid part 20. The mounting recess 21 is formed to communicate with the insertion hole 23. A cylindrical body portion 25 extending from the partition wall 18 toward the inside of the other end side portion 17 of the apparatus main body 5 is formed integrally with the partition wall 18 as a member concentric with the other end side portion 17.
　液送領域１４は、隔壁１８を挟んで取付けられる一端側部１５および他端側部１７のうち、一端側部１５の内部空間であり、表層液３を吸込口部８から流入させて分離タンク（分離部）４へ移送する機能を有する液送経路である。また一端側部１５は、インペラ１１を内装する領域として用いられている。 The liquid feeding region 14 is an internal space of the one end side portion 15 of the one end side portion 15 and the other end side portion 17 attached with the partition wall 18 interposed therebetween, and the surface layer liquid 3 is allowed to flow from the suction port portion 8 to separate tanks. (Separation unit) 4 is a liquid transport path having a function of transporting to 4. The one end side portion 15 is used as a region in which the impeller 11 is housed.
　装置本体５の他端側部１７は、インペラ１１を回転駆動させる駆動部１２を内装した、前記駆動部収容領域１６を形成しており、しかも駆動部１２のケースを兼用している。筒体部２５の奥壁２６の中心に、軸受３０を装着するための装着凹部２２が形成されている。 The other end side portion 17 of the apparatus main body 5 forms the drive unit accommodation region 16 in which the drive unit 12 for rotating the impeller 11 is housed, and also serves as a case for the drive unit 12. A mounting recess 22 for mounting the bearing 30 is formed at the center of the back wall 26 of the cylindrical body portion 25.
　吸込口部８は蛇腹筒６の上部に取付けられており、蛇腹筒６の伸縮動作により、液槽２内の液面７の水位に追随するよう構成されている。吸込口部８の上部は開口とされており、表層液は、該開口から吸い込まれる。吸込管９は、装置本体５の一端側部１５と蛇腹筒６の下部とを連通接続するよう構成されている。吸込管９は、上方及び側方に向けて開放するようエルボー管状に形成されている。吸込管９は、上方に向けて開放している端部を蛇腹筒６の下部に連通させ、且つ側方に向けて開放されている端部を装置本体５の一端側部１５に形成された吸引側取付部３５に連通させている。 The suction port 8 is attached to the upper part of the bellows cylinder 6 and is configured to follow the water level of the liquid level 7 in the liquid tank 2 by the expansion and contraction of the bellows cylinder 6. The upper part of the suction inlet 8 is an opening, and the surface layer liquid is sucked from the opening. The suction pipe 9 is configured to communicate and connect the one end side portion 15 of the apparatus main body 5 and the lower portion of the bellows cylinder 6. The suction pipe 9 is formed in an elbow shape so as to open upward and laterally. The suction pipe 9 is formed at the one end side portion 15 of the apparatus main body 5 with the end portion that opens upward communicating with the lower portion of the bellows tube 6 and the end portion that opens toward the side. The suction side mounting portion 35 is communicated with.
　移送ポンプ１０は、装置本体５の内部に配置されている。移送ポンプ１０は、前記インペラ１１と、インペラ１１をその軸心回りに回転駆動させる前記駆動部（電動機）１２とを備えている。インペラ１１は、軸心回りに回転することで、表層液３を吸込口部８から蛇腹筒６、一端側部１５へ流入させて、分離タンク４側へ向けて移送させる機能を有する。駆動部１２は、インナーロータ型の直流ブラシレスモータを備える。該直流ブラシレスモータは、回転駆動軸１３と、回転駆動軸１３の外周部に配置された永久磁石２７と、永久磁石２７の外周部に配置された誘導コイル２８と、回転駆動軸１３を受ける軸受２９，３０とを備える。 The transfer pump 10 is disposed inside the apparatus main body 5. The transfer pump 10 includes the impeller 11 and the drive unit (electric motor) 12 that rotates the impeller 11 about its axis. The impeller 11 has a function of causing the surface layer liquid 3 to flow from the suction port portion 8 to the bellows cylinder 6 and the one end side portion 15 and to move toward the separation tank 4 side by rotating around the axis. The drive unit 12 includes an inner rotor type DC brushless motor. The DC brushless motor includes a rotary drive shaft 13, a permanent magnet 27 disposed on the outer periphery of the rotary drive shaft 13, an induction coil 28 disposed on the outer periphery of the permanent magnet 27, and a bearing that receives the rotary drive shaft 13. 29,30.
　回転駆動軸１３は、セラミック製であり、蓋部２０の中心に形成された挿通孔２３に挿通されている。インペラ１１は、液送領域１４に突出した回転駆動軸１３の一端部に外嵌して固定されている。回転駆動軸１３の途中部分は、蓋部２０の装着凹部２１に内装された前記軸受２９によって軸心回りに回転自在に支持されている。回転駆動軸１３の他端部は、筒体部２５の奥壁２６の装着凹部２２に装着された前記軸受３０によって軸心回りに回転自在に支持されている。各軸受２９，３０は、滑り軸受である。永久磁石２７は筒体部２５の胴部２５ａの外周部に固定されている。永久磁石２７と誘導コイル２８とは、筒体部２５の胴部２５ａを間に置いて径方向内外で対向配置されている。 The rotary drive shaft 13 is made of ceramic, and is inserted through an insertion hole 23 formed at the center of the lid portion 20. The impeller 11 is externally fitted and fixed to one end of the rotary drive shaft 13 protruding into the liquid feeding region 14. A midway portion of the rotational drive shaft 13 is supported by the bearing 29 provided in the mounting recess 21 of the lid portion 20 so as to be rotatable about the axis. The other end of the rotary drive shaft 13 is supported by the bearing 30 mounted in the mounting recess 22 of the inner wall 26 of the cylindrical body 25 so as to be rotatable about the axis. Each bearing 29 and 30 is a sliding bearing. The permanent magnet 27 is fixed to the outer peripheral portion of the body portion 25 a of the cylindrical body portion 25. The permanent magnet 27 and the induction coil 28 are opposed to each other inside and outside in the radial direction with the body portion 25a of the cylindrical body portion 25 interposed therebetween.
　表層液回収装置１は、密封装置３１を備える。密封装置３１は、駆動部１２側への異物の侵入を抑制する。インペラ１１と回転駆動軸１３との間で且つインペラ１１と蓋部２０との間に、駆動部１２（筒体部２５の内部）側へ異物の侵入を抑制する密封装置３１が設けられている。インペラ１１の側面で脚部１１ａの径方向内方には、密封装置３１を装着する挿入凹部３４が形成されている。密封装置３１は環状に形成され、回転駆動軸１３を外嵌するよう挿通されている。密封装置３１は、円盤状のシール本体３２と、シール本体３２の側面から一方側に突出する環状のリップシール３３とから一体的に形成されている。密封装置３１のリップシール３３が挿通孔２３の外周辺部に接触されていることで、挿通孔２３から異物が侵入する状態を抑制できる。 The surface layer liquid recovery device 1 includes a sealing device 31. The sealing device 31 suppresses entry of foreign matter into the drive unit 12 side. A sealing device 31 is provided between the impeller 11 and the rotary drive shaft 13 and between the impeller 11 and the lid portion 20 to prevent foreign matter from entering the drive portion 12 (inside the cylindrical portion 25). . An insertion recess 34 for mounting the sealing device 31 is formed on the side surface of the impeller 11 in the radial direction of the leg portion 11a. The sealing device 31 is formed in an annular shape, and is inserted through the rotary drive shaft 13. The sealing device 31 is integrally formed from a disc-shaped seal body 32 and an annular lip seal 33 that protrudes from the side surface of the seal body 32 to one side. Since the lip seal 33 of the sealing device 31 is in contact with the outer peripheral portion of the insertion hole 23, it is possible to suppress a state in which foreign matter enters from the insertion hole 23.
　なお、装置本体５と分離タンク４とは、装置本体５に形成された一端側部１５の吐出側取付部３６に取付けられる吐出管３７によって連通接続されている。分離タンク４には、表層液３を液槽２に戻すための再帰管３８が接続されている。駆動部１２には、直流電源（図示せず）に駆動部１２を電気的に接続するための電源コード３９が接続されている。 The apparatus main body 5 and the separation tank 4 are connected in communication by a discharge pipe 37 attached to the discharge side mounting portion 36 of the one end side portion 15 formed in the apparatus main body 5. A recursive pipe 38 for returning the surface liquid 3 to the liquid tank 2 is connected to the separation tank 4. The drive unit 12 is connected with a power cord 39 for electrically connecting the drive unit 12 to a direct current power source (not shown).
　上記構成において、駆動部（電動機）１２には、直流ブラシレスモータが用いられている。このため、表層液回収装置１は、商用電源を備えていない限られた使用場所において使用することができるといった利点がある。 In the above configuration, a DC brushless motor is used for the drive unit (electric motor) 12. For this reason, the surface liquid collection | recovery apparatus 1 has the advantage that it can be used in the limited use place which is not equipped with a commercial power source.
　電源コード３９を直流電源に接続して駆動部１２を駆動すると、インペラ１１が回転駆動軸１３とともに回転して、移送ポンプ１０の揚程力により吸込口部８が液面７の水位に追随しつつ吸込口部８から機械油等を含む表層液３が吸い込まれる。表層液３は蛇腹筒６から液送領域１４に吸い込まれ、続いて液送領域１４から吐出管３７へ移動し、さらに分離タンク４内へ送られる。そして、分離タンク４内で機械油等が比重差によって除去（分離）され、機械油等が除去された表層液３は、再帰管３８から再び液槽２へ戻される。なお、インペラ１１は、回転駆動軸１３に片持ち支持された構造になっていることで、表層液３が液送領域１４から吐出管３７へ移動する際に、移動の障害となる部材が無い。このため、表層液３の移動が極めて円滑に行われる。以上の動作が繰り返されることにより、表層液３は常時的に異物を除去した状態が確保され、液槽２内の液体（切削用液）が良好な状態で使用できる。 When the power cord 39 is connected to a DC power source and the drive unit 12 is driven, the impeller 11 rotates with the rotary drive shaft 13, and the suction port 8 follows the water level of the liquid level 7 by the lifting force of the transfer pump 10. The surface liquid 3 containing machine oil or the like is sucked from the suction port 8. The surface layer liquid 3 is sucked into the liquid feeding area 14 from the bellows cylinder 6, subsequently moved from the liquid feeding area 14 to the discharge pipe 37, and further fed into the separation tank 4. Then, the machine oil or the like is removed (separated) in the separation tank 4 due to the difference in specific gravity, and the surface layer liquid 3 from which the machine oil or the like has been removed is returned to the liquid tank 2 from the recursive pipe 38 again. The impeller 11 has a structure that is cantilevered by the rotary drive shaft 13, so that there is no member that obstructs movement when the surface liquid 3 moves from the liquid feeding region 14 to the discharge pipe 37. . For this reason, the movement of the surface liquid 3 is performed very smoothly. By repeating the above operation, the surface liquid 3 is always kept in a state in which foreign matters are removed, and the liquid (liquid for cutting) in the liquid tank 2 can be used in a good state.
　そして、直流ブラシレスモータは、同じ効率のコンデンサ起動電動機や、かご形三相誘導電動機等の交流誘導電動機に比べて小型である。このため、表層液３の回収に必要な移送ポンプの効率を確保しつつ、表層液回収装置１全体が小型化できる。 And, the DC brushless motor is smaller than the AC induction motor such as a capacitor starting motor and a squirrel-cage three-phase induction motor having the same efficiency. For this reason, the whole surface liquid collection | recovery apparatus 1 can be reduced in size, ensuring the efficiency of the transfer pump required for collection | recovery of the surface liquid 3. FIG.
　また、工作機械の切削用液が表層液３である場合では、表層液３には機械油のみならず、工作機械を切削した際に発生する金属粉（鉄粉等の磁性体粉）が含まれる。ところで、表層液回収装置１の駆動部１２には、直流ブラシレスモータが用いられており、筒体部２５には永久磁石２７が内装されている。そして、表層液３に混入した金属粉が永久磁石２７に付着すると、移送ポンプ１０の効率が低下したり、駆動しなくなったりする。しかしながら、表層液回収装置１では、インペラ１１と回転駆動軸１３との間で且つインペラ１１と蓋部２０との間に密封装置３１が設けられている。このため、駆動部１２側へ機械油、あるいは異物が侵入する状態を確実に抑制でき、移送ポンプ１０の効率の低下や故障を防止できる。 When the cutting fluid for the machine tool is the surface liquid 3, the surface liquid 3 includes not only machine oil but also metal powder (magnetic powder such as iron powder) generated when the machine tool is cut. It is. Incidentally, a DC brushless motor is used for the drive unit 12 of the surface layer liquid recovery apparatus 1, and a permanent magnet 27 is provided in the cylindrical body 25. And if the metal powder mixed in the surface layer liquid 3 adheres to the permanent magnet 27, the efficiency of the transfer pump 10 will fall or it may not drive. However, in the surface liquid recovery apparatus 1, the sealing device 31 is provided between the impeller 11 and the rotary drive shaft 13 and between the impeller 11 and the lid portion 20. For this reason, it is possible to reliably suppress the state in which the machine oil or the foreign matter enters the drive unit 12 side, and it is possible to prevent a decrease in efficiency and failure of the transfer pump 10.
　以上、本実施形態に係る表層液回収装置１は、液槽２内にある液体の液面の水位に追随して液体の表層液３を吸込むよう構成された吸込口部８と、吸込口部８から流入した表層液３を、液体と、液体に混入している異物とに分離する分離タンク４へ移送するための移送ポンプ１０とを備え、移送ポンプ１０は、移送ポンプ１０を駆動させる駆動部として、直流ブラシレスモータを備えている。 As described above, the surface layer liquid recovery apparatus 1 according to the present embodiment has the suction port portion 8 configured to suck the liquid surface layer liquid 3 following the water level of the liquid level in the liquid tank 2, and the suction port portion. 8 includes a transfer pump 10 for transferring the surface layer liquid 3 flowing from 8 to a separation tank 4 that separates the liquid into liquid and foreign matter mixed in the liquid. The transfer pump 10 is a drive for driving the transfer pump 10. As a part, a DC brushless motor is provided.
　そのため、直流ブラシレスモータの駆動により移送ポンプ１０が駆動して、液槽２内にある液体の表層液３が吸込口部８から吸い込まれ、表層液３は分離タンク４へ移送されて液体と異物とに分離される。直流ブラシレスモータは、同じ効率のコンデンサ起動電動機や、かご形三相誘導電動機等の交流誘導電動機に比べて小型である。このため、表層液回収装置１全体を小型化したうえで、表層液３の回収に必要な移送ポンプの効率が確保される。また、直流ブラシレスモータを用いることによれば、商用電源のない場所でも、蓄電池を用いて表層液回収装置１の使用が可能になる。 Therefore, the transfer pump 10 is driven by the driving of the DC brushless motor, and the liquid surface layer liquid 3 in the liquid tank 2 is sucked from the suction port 8, and the surface layer liquid 3 is transferred to the separation tank 4 to be liquid and foreign matter. And separated. The DC brushless motor is smaller than a capacitor starting motor having the same efficiency or an AC induction motor such as a squirrel-cage three-phase induction motor. For this reason, the efficiency of the transfer pump required for the recovery of the surface layer liquid 3 is ensured after the entire surface layer liquid recovery apparatus 1 is downsized. Further, by using the direct current brushless motor, the surface layer liquid recovery apparatus 1 can be used using a storage battery even in a place where there is no commercial power source.
　また、本実施形態の表層液回収装置１では、直流ブラシレスモータは、回転駆動軸１３を備え、回転駆動軸１３は、滑り軸受により軸心回りに回転自在に支持されている。このため、表層液回収装置１（駆動部１２）は、異物の影響を受けにくい。したがって、その分だけ表層液回収装置１の故障が抑えられて、長寿命になる。 Further, in the surface layer liquid recovery apparatus 1 of the present embodiment, the direct current brushless motor includes the rotation drive shaft 13, and the rotation drive shaft 13 is rotatably supported around the axis by a slide bearing. For this reason, the surface liquid recovery apparatus 1 (drive unit 12) is not easily affected by foreign matter. Therefore, the failure of the surface layer liquid recovery apparatus 1 is suppressed by that amount, and the life is prolonged.
　また、本実施形態の表層液回収装置１では、回転駆動軸１３は、セラミックにより形成されている。このため、表層液回収装置１（駆動部１２）は異物の影響を受けにくい。したがって、その分だけ表層液回収装置１の故障が抑えられて、長寿命になる。 Moreover, in the surface layer liquid recovery apparatus 1 of the present embodiment, the rotary drive shaft 13 is made of ceramic. For this reason, the surface liquid recovery apparatus 1 (drive unit 12) is not easily affected by foreign matter. Therefore, the failure of the surface layer liquid recovery apparatus 1 is suppressed by that amount, and the life is prolonged.
　また、本実施形態の表層液回収装置１では、移送ポンプ１０は、インペラ１１を備え、インペラ１１は、回転駆動軸１３回りに回転するよう回転駆動軸１３に連結され、直流ブラシレスモータ側への異物の侵入を抑制する密封装置３１が、インペラ１１と回転駆動軸１３との間に設けられている。 Moreover, in the surface layer liquid recovery apparatus 1 of this embodiment, the transfer pump 10 includes an impeller 11, and the impeller 11 is connected to the rotary drive shaft 13 so as to rotate around the rotary drive shaft 13, and is connected to the DC brushless motor side. A sealing device 31 that suppresses intrusion of foreign matter is provided between the impeller 11 and the rotary drive shaft 13.
　この構成により、密封装置３１により直流ブラシレスモータ側へ異物が侵入されるのを抑制できるから、異物による移送ポンプ１０の故障を抑制することができ、表層液回収装置１の寿命が延びる。 With this configuration, since foreign matter can be prevented from entering the DC brushless motor side by the sealing device 31, failure of the transfer pump 10 due to foreign matter can be suppressed, and the life of the surface liquid recovery apparatus 1 can be extended.
　また、本実施形態の表層液回収装置１では、インペラ１１を内装する一端側部１５と、直流ブラシレスモータを内装する他端側部１７と、一端側部１５及び他端側部１７を区画するよう構成され挿通孔２３が形成された隔壁１８とを有した装置本体５を備え、インペラ１１は、一端部及び他端部を備えた回転駆動軸１３の一端部に取り付けられ、回転駆動軸１３の一端部が一端側部１５内に、回転駆動軸１３の他端部が他端側部１７内に配置されるよう、隔壁１８の挿通孔２３に挿通されており、密封装置３１は、インペラ１１と隔壁１８との間に設けられている。 Moreover, in the surface-layer liquid collection | recovery apparatus 1 of this embodiment, the one end side part 15 which incorporates the impeller 11, the other end side part 17 which comprises a DC brushless motor, the one end side part 15, and the other end side part 17 are divided. The impeller 11 is attached to one end portion of the rotary drive shaft 13 having one end portion and the other end portion, and the rotary drive shaft 13 is configured. Is inserted into the insertion hole 23 of the partition wall 18 so that the other end portion of the rotary drive shaft 13 is disposed in the other end side portion 17. 11 and the partition wall 18.
　この構成により、シール性が向上して、駆動部１２側へ異物が侵入する状態を確実に抑制でき、移送ポンプ１０の効率の低下や故障を防止できる。 With this configuration, the sealing performance is improved, the state where foreign matter enters the drive unit 12 side can be reliably suppressed, and the reduction or failure of the efficiency of the transfer pump 10 can be prevented.
　また、本実施形態の表層液回収装置１では、インペラ１１は、側面と、側面に形成される挿入凹部３４とを備え、密封装置３１は、挿入凹部３４内に装着されている。この構成により、シール性が向上して、駆動部１２側へ異物が侵入する状態を確実に抑制でき、移送ポンプ１０の効率の低下や故障を防止できる。 Further, in the surface layer liquid recovery apparatus 1 of the present embodiment, the impeller 11 includes a side surface and an insertion recess 34 formed on the side surface, and the sealing device 31 is mounted in the insertion recess 34. With this configuration, the sealing performance is improved, and a state where foreign matter enters the drive unit 12 side can be reliably suppressed, and a decrease in efficiency and failure of the transfer pump 10 can be prevented.
　また、本実施形態の表層液回収装置１では、密封装置３１は、円盤状のシール本体３２と、シール本体３２の側面から突出する環状のリップシール３３とを備え、回転駆動軸１３に外嵌装着するよう構成され、インペラ１１は、側面と、側面に形成された挿入凹部３４とを備え、シール本体３２は、挿入凹部３４に収容され、リップシール３３は、隔壁１８の挿通孔２３の外周辺部に接触する。 In the surface layer liquid recovery apparatus 1 of the present embodiment, the sealing device 31 includes a disk-shaped seal body 32 and an annular lip seal 33 protruding from the side surface of the seal body 32, and is fitted on the rotary drive shaft 13. The impeller 11 includes a side surface and an insertion concave portion 34 formed on the side surface, the seal body 32 is accommodated in the insertion concave portion 34, and the lip seal 33 is disposed outside the insertion hole 23 of the partition wall 18. Touch the periphery.
　この構成により、シール性が向上して、駆動部１２側へ異物が侵入する状態を確実に抑制でき、移送ポンプ１０の効率の低下や故障を防止できる。 With this configuration, the sealing performance is improved, the state where foreign matter enters the drive unit 12 side can be reliably suppressed, and the reduction or failure of the efficiency of the transfer pump 10 can be prevented.
　本実施形態の表層液回収装置１では、インペラ１１は、側面と、側面から突出する脚部１１ａとを備え、隔壁１８は、挿通孔２３の外周部に形成された環状の環状凹部２４を備え、脚部１１ａは、環状凹部２４内に挿入されている。 In the surface layer liquid recovery apparatus 1 of the present embodiment, the impeller 11 includes a side surface and a leg portion 11 a protruding from the side surface, and the partition wall 18 includes an annular annular recess 24 formed in the outer peripheral portion of the insertion hole 23. The leg portion 11 a is inserted into the annular recess 24.
　この構成により、シール性が向上して、駆動部１２側へ異物が侵入する状態を確実に抑制でき、移送ポンプ１０の効率の低下や故障を防止できる。 With this configuration, the sealing performance is improved, the state where foreign matter enters the drive unit 12 side can be reliably suppressed, and the reduction or failure of the efficiency of the transfer pump 10 can be prevented.
　本発明に係る表層液回収装置１は、上記実施形態に限定されず、本発明の要旨を逸脱しない範囲で種々の変更が可能である。また、本発明に係る表層液回収装置１は、上記した作用効果に限定されるものでもない。 The surface layer liquid recovery apparatus 1 according to the present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. Moreover, the surface layer liquid collection | recovery apparatus 1 which concerns on this invention is not limited to an above-described effect.
１　　表層液回収装置
２　　液槽
３　　表層液
４　　分離タンク
５　　装置本体
７　　液面
１１　インペラ
１２　駆動部
１３　回転駆動軸
１４　液送領域
１５　一端側部
１６　駆動部収容領域
１７　他端側部
１８　隔壁
２１　装着凹部
２２　装着凹部
２３　挿通孔
２８　誘導コイル
２９，３０　軸受
３１　密封装置
３４　挿入凹部 DESCRIPTION OF SYMBOLS 1 Surface layer liquid collection | recovery apparatus 2 Liquid tank 3 Surface layer liquid 4 Separation tank 5 Apparatus main body 7 Liquid surface 11 Impeller 12 Drive part 13 Rotation drive shaft 14 Liquid supply area | region 15 One end side part 16 Drive part accommodation area | region 17 Other end side part 18 Partition 21 Mounting recess 22 Mounting recess 23 Insertion hole 28 Inductive coils 29, 30 Bearing 31 Sealing device 34 Insertion recess

Claims (8)

  1. 　液槽内にある液体の液面の水位に追随して前記液体の表層液を吸込むよう構成された吸込口部と、
    　該吸込口部から流入した表層液を、液体と該液体に混入している異物とに分離する分離部へ移送するための移送ポンプとを備え、
    　該移送ポンプは、該移送ポンプを駆動させる駆動部として、直流ブラシレスモータを備えている表層液回収装置。     A suction port configured to suck the surface liquid of the liquid following the water level of the liquid level in the liquid tank;
    A transfer pump for transferring the surface layer fluid that has flowed in from the suction port to a separation unit that separates the liquid into a foreign substance mixed in the liquid;
    The transfer pump is a surface layer liquid recovery apparatus provided with a DC brushless motor as a drive unit for driving the transfer pump.
  2. 　前記直流ブラシレスモータは、回転駆動軸を備え、
    　該回転駆動軸は、滑り軸受により軸心回りに回転自在に支持されている請求項１記載の表層液回収装置。     The DC brushless motor includes a rotary drive shaft,
    The surface layer liquid recovery apparatus according to claim 1, wherein the rotary drive shaft is supported by a slide bearing so as to be rotatable about an axis.
  3. 　前記回転駆動軸は、セラミックにより形成されている請求項２記載の表層液回収装置。 3. The surface layer liquid recovery apparatus according to claim 2, wherein the rotary drive shaft is made of ceramic.
  4. 　前記移送ポンプは、インペラを備え、
    　該インペラは、前記回転駆動軸回りに回転するよう該回転駆動軸に連結され、
    　前記直流ブラシレスモータ側への異物の侵入を抑制する密封装置が、インペラと回転駆動軸との間に設けられている請求項２記載の表層液回収装置。     The transfer pump includes an impeller,
    The impeller is coupled to the rotary drive shaft to rotate about the rotary drive shaft;
    The surface layer liquid recovery apparatus according to claim 2, wherein a sealing device that suppresses entry of foreign matter into the DC brushless motor side is provided between the impeller and the rotary drive shaft.
  5. 　前記インペラを内装する一端側部と、前記直流ブラシレスモータを内装する他端側部と、一端側部及び他端側部を区画するよう構成され挿通孔が形成された隔壁とを有した装置本体を備え、
    　前記インペラは、一端部及び他端部を備えた前記回転駆動軸の前記一端部に取り付けられ、
    　前記回転駆動軸の前記一端部が前記一端側部内に、前記回転駆動軸の前記他端部が前記他端側部内に配置されるよう、前記隔壁の挿通孔に挿通されており、
    　前記密封装置は、前記インペラと隔壁との間に設けられている請求項４記載の表層液回収装置。     An apparatus main body having one end side portion in which the impeller is housed, the other end side portion in which the DC brushless motor is housed, and a partition wall configured to partition the one end side portion and the other end side portion and having an insertion hole. With
    The impeller is attached to the one end of the rotary drive shaft having one end and the other end;
    The one end portion of the rotation drive shaft is inserted into the one end side portion, and the other end portion of the rotation drive shaft is inserted into the other end side portion, and is inserted into the insertion hole of the partition wall,
    The surface layer liquid recovery apparatus according to claim 4, wherein the sealing device is provided between the impeller and the partition wall.
  6. 　前記インペラは、側面と、該側面に形成される挿入凹部とを備え、
    　前記密封装置は、前記挿入凹部内に装着される請求項４または請求項５記載の表層液回収装置。     The impeller includes a side surface and an insertion recess formed on the side surface,
    6. The surface layer liquid recovery apparatus according to claim 4, wherein the sealing device is mounted in the insertion recess.
  7. 　前記密封装置は、円盤状のシール本体と、該シール本体の側面から突出する環状のリップシールとを備え、前記回転駆動軸に外嵌装着するよう構成され、
    　前記インペラは、側面と、該側面に形成された挿入凹部とを備え、
    　前記シール本体は、前記挿入凹部に収容され、
    　前記リップシールは、前記隔壁の挿通孔の外周辺部に接触する請求項５記載の表層液回収装置。     The sealing device includes a disc-shaped seal body and an annular lip seal protruding from a side surface of the seal body, and is configured to be externally fitted to the rotary drive shaft.
    The impeller includes a side surface and an insertion recess formed in the side surface,
    The seal body is accommodated in the insertion recess,
    6. The surface layer liquid recovery apparatus according to claim 5, wherein the lip seal contacts an outer peripheral portion of the insertion hole of the partition wall.
  8. 　前記インペラは、側面と、該側面から突出する脚部とを備え、
    　前記隔壁は、前記挿入孔の外周部に形成された環状の環状凹部を備え、
    　前記脚部は、前記環状凹部内に挿入されている請求項５記載の表層液回収装置。     The impeller includes a side surface and a leg portion protruding from the side surface,
    The partition includes an annular recess formed in the outer periphery of the insertion hole,
    The surface layer liquid recovery apparatus according to claim 5, wherein the leg portion is inserted into the annular recess.
PCT/JP2012/064453 2012-06-05 2012-06-05 Surface liquid recovery device WO2013183114A1 (en)

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KR20210055643A (en) 2021-04-27 2021-05-17 김용원 An electric board with a large number of rotor wheels and a large number of stator wheel generators on a motorized shaft
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KR20220016234A (en) 2022-01-14 2022-02-08 김용원 A 3wheeled bicycle equipped with an air thruster that combines an air pump and an air turbine
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KR20220056159A (en) 2022-04-04 2022-05-04 김용원 A generator connected to a steam cleaner (powered by a steam turbine with a super heater) and Air filter (air intake, cold and hot air exhaust) A system that combines an air purifying facility and an ice maker in conjunction with an air turbine
KR20220056835A (en) 2022-04-18 2022-05-06 김용원 An aqua bicycle equipped with 3 air thrusters that combines an air pump and an air turbines
KR20220076421A (en) 2022-05-11 2022-06-08 김용원 A pedal vehicle
KR20220080053A (en) 2022-05-27 2022-06-14 김용원 An air layers tube boat

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JP5956574B2 (en) 2016-07-27
KR20150016203A (en) 2015-02-11
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KR101862732B1 (en) 2018-05-30
CN104302579A (en) 2015-01-21

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