JP5388719B2 - Multi-component mixing device - Google Patents

Description

  The present invention relates to a multi-component mixing apparatus for paints.

  Patent Document 1 discloses a multi-component mixing apparatus for obtaining a paint by mixing a plurality of types of liquids. This mixing apparatus has a cylindrical member provided with a stirring space for allowing a plurality of types of liquids to flow in one direction inside, and a stirring blade that protrudes on the outer periphery and rotates in the stirring space. And a stirring blade is configured to rotate in a direction crossing the liquid flow direction in the stirring space. According to this mixing apparatus, a plurality of types of liquids passing through the stirring space are stirred by the stirring blades to become a mixed paint.

JP 2006-326388 A

In the case of the mixing device that rotates the stirring member as described above, there is a concern that the quality of the paint may be deteriorated if the rotation speed of the stirring member is out of an appropriate range.
This invention is completed based on the above situations, Comprising: It aims at preventing the quality deterioration of the mixed coating material obtained by mixing multiple types of liquid.

As means for achieving the above object, the invention of claim 1 comprises a stirring space for circulating a plurality of types of liquids, and a stirring member having a stirring blade and rotating in the stirring space, A rotation drive member that is driven to rotate coaxially with the stirring member along an outer periphery of a cylindrical portion that constitutes the stirring space; a drive-side magnet that is provided to rotate integrally with the rotation drive member; and the stirring member. A driven magnet provided to rotate integrally, and when the stirring member rotates integrally with the rotary drive member by a magnetic attractive force between the drive magnet and the driven magnet, A multi-liquid mixing device in which the plurality of types of liquids are agitated to obtain a mixed paint by rotating the stirring blade in a direction crossing the flow direction of the plurality of types of liquids in the stirring space. In the stirring A detector provided at an eccentric position deviating from the rotation center of the member and rotating integrally with the stirring member; and a sensor for detecting the position of the detector ; the detector is made of a permanent magnet; It is arranged at one end of both ends in the rotation axis direction of the member, the sensor is adapted to perform a detection operation in response to magnetism formed by the detector, and the driven magnet is It is characterized in that the stirring member is disposed at the other end of both ends in the rotation axis direction .

  Invention of Claim 2 is the thing of Claim 1, Comprising: The said stirring member is a form which protruded the said stirring blade from the outer periphery of the axial part, and the said detector is the said radial direction of the said stirring member. It is characterized by being disposed in the vicinity of the base end of the stirring blade.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the detector is disposed at an end portion in the rotation axis direction of the stirring member, and the sensor is in the rotation axis direction of the stirring member. It has the characteristic in the place arrange | positioned so as to oppose the end surface.

  The invention of claim 4 is characterized in that, in the invention of claim 3, there is provided bearing means capable of restricting displacement of the stirring member in the rotation axis direction.

<Invention of Claim 1>
Since the number of rotations of the stirring member can be detected based on the number of detection signals per unit time output from the sensor, if the number of rotations of the stirring member is controlled based on the detection result, It is possible to obtain a high quality mixed paint by rotating at a high speed.
Further, as a means for transmitting the rotational force to the stirring member accommodated in the stirring space, a transmission member provided so as to rotate integrally with the stirring member is penetrated to the outside of the stirring space, and the rotational force is applied to the transmission member. A structure that can be considered. However, when the rotating transmission member has a structure that penetrates the inside and outside of the stirring space in this way, the liquid or mixed paint that has entered the gap between the penetration portions of the transmission member becomes highly viscous and adheres, and therefore the rotation speed of the stirring member. There is a concern that will become unstable. On the other hand, in the present invention, since the magnetic force is used as a means for applying the rotational force to the stirring member, the rotational speed of the stirring member is unstable due to the high viscosity of the liquid or the mixed paint as described above. Can be avoided.
Further, since the driven magnet is disposed at a position farthest from the detector in the rotation axis direction of the stirring member, the sensor for detecting the magnetism of the detector is also far from the driven magnet in the rotation axis direction of the stirring member. Placed in position. Therefore, the sensor is not affected by the magnetism of the driven magnet, and the detection function of the sensor can be stabilized.

<Invention of Claim 2>
Since the detector is arranged at the eccentric position of the stirring member in the radial direction, when the specific gravity of the detector is greatly different from that of the stirring member, the center of gravity of the stirring member deviates from the rotation center, and the stirring member causes shaft shake. There is concern. In that respect, in the present invention, since the detector is arranged in the vicinity of the base end portion of the stirring blade, that is, the position close to the rotation center of the stirring member, the center of gravity of the stirring member is positioned near the rotation center. Therefore, shaft shake of the stirring member can be avoided.

<Invention of Claim 3>
Since the sensor is disposed so as to face the stirring member in the direction of the rotation axis, the space for arranging the sensor in the radial direction can be small.

<Invention of Claim 4>
Since the displacement of the stirring member in the direction of the rotation axis is regulated by the bearing means, the facing distance between the detector and the sensor in the direction of the rotation axis is stabilized, thereby improving the detection accuracy of the sensor.

Sectional drawing of the multi-liquid mixing apparatus of Embodiment 1. Front view of stirring member Bottom view of stirring member

<Embodiment 1>
A first embodiment of the present invention will be described below with reference to FIGS. 1 to 3. The multi-liquid mixing apparatus includes a housing 10 in which an agitating space 11 is formed, an agitating means 30 for agitating and mixing a plurality of types of liquids (main agent and curing agent) flowing in the agitating space 11, and an agitating means. Drive means 21 for rotationally driving the agitating member 31 constituting 30.

  The housing 10 is configured by assembling a plurality of parts made of a nonmagnetic material. A stirring space 11 is formed in the housing 10 as a space for allowing the main agent and the curing agent to flow in one direction. A region on the downstream end side in the flow direction of the main agent and the curing agent (a direction substantially parallel to the axis of the housing 10) in the stirring space 11 is an accommodation space 12. The stirring space 11 including the accommodation space 12 has a circular cross section perpendicular to the flow direction of the main agent and the curing agent. In the stirring space 11, an area upstream of the accommodation space 12 is set to have an inner diameter larger than that of the accommodation space 12. The end surface on the upstream end side in the stirring space 11 has a shape in which a central position coaxial with the axis of the housing 10 (which is an axis passing through the center of the stirring space 11 described later, hereinafter simply referred to as an axis) is recessed in a spherical shape. The upstream bearing portion 13 (bearing means which is a constituent element of the present invention) is formed.

  An inflow port 14 oriented in a direction orthogonal to the axis of the housing 10 is attached to the outer periphery of the housing 10, and the downstream end of the inflow port 14 is connected to the upstream end of the stirring space 11 via an inflow hole 15 coaxial with the inflow port 14. It is communicated. The housing 10 is formed with an outflow hole 16 that opens at the downstream end of the housing space 12 and is coaxial with the axis of the housing 10, and an outflow port 17 that communicates with the downstream end of the outflow hole 16 is coaxial. Is attached.

  A bearing member 18 is fixedly attached to the downstream end of the accommodation space 12. In the center of the surface of the bearing member 18 facing the accommodation space 12 (a position coaxial with the axis of the housing 10), a downstream support portion 19 (bearing means which is a constituent feature of the present invention) is formed in a spherically concave shape. Is formed. Further, the bearing member 18 opens into the receiving space 12 at a position eccentric in the radial direction (direction orthogonal to the axis of the housing 10) from the downstream support portion 19, and allows the receiving space 12 to communicate with the outflow hole 16. A communication hole 20 is formed.

  A supply means (not shown) for supplying the main agent and the curing agent to the multi-liquid mixing device is connected to the inflow port 14 so that the main agent and the curing agent are alternately supplied by a predetermined amount. . The main agent and the curing agent supplied to the inflow port 14 pass through the inflow hole 15, the stirring space 11, the accommodation space 12, the communication hole 20, the outflow hole 16, and the outflow port 17 in order, and are stirred while passing through the stirring space 11. Thus, a mixed paint (in this embodiment, an aqueous two-component urethane paint) is formed, flows out of the housing 10 and is supplied to a paint gun (not shown).

  A drive chamber 22 corresponding to the accommodation space 12 is formed in the housing 10 in the axial direction. The drive chamber 22 constitutes the drive means 21 and surrounds the accommodating space 12 via the thin cylindrical portion 23. The cylindrical portion 23 has a cylindrical shape concentric with the accommodation space 12. An intake port 24 connected to a compressor (not shown) is attached to the housing 10, and a nozzle 25 that connects the intake port 24 and the drive chamber 22 is formed. The pressurized air pumped from the compressor passes through the intake port 24 and is discharged from the nozzle 25 into the drive chamber 22. A plurality of exhaust ports 26 are formed on the outer wall of the drive chamber 22.

  A stirring member 31 for stirring the main agent and the curing agent is attached in the housing 10. The stirring member 31 constitutes the stirring means 30, and includes a main body 32 made of a nonmagnetic material, an elongated cylindrical shaft 38 made of the same nonmagnetic material, a driven magnet 44 made of a permanent magnet, and a detection made of a permanent magnet. And a child 50.

  The main body 32 has a shaft portion 33 coaxial with the rotating shaft of the stirring member 31 (that is, the axis of the housing 10), a center hole 34 having a circular cross section penetrating the shaft portion 33 in the axial direction, and a diameter from the outer periphery of the shaft portion 33. The five enlarged diameter portions 35 projecting outward in the direction (in the present embodiment, the number is five, but the number of the enlarged diameter portions 35 may be four or less, or may be six or more) are integrally formed. . The five enlarged diameter portions 35 are formed at equal intervals in the rotation axis direction, and all the enlarged diameter portions 35 are regions upstream of the accommodation space 12 in the stirring space 11 in the rotation axis direction. It is arranged to be located inside.

  In the outer periphery of the enlarged diameter portion 35, there are four (in this embodiment, four in the form of being dented into a substantially quadrangular arc shape having an equal angular pitch and the same shape and dimensions in the circumferential direction. The number of recesses 36 may be three or less, or five or more. The portions protruding in a plate shape between adjacent recesses 36 in the circumferential direction are spiral stirring blades 37.

  The shaft 38 passes through the center hole 34 and is attached in a fixed state in which movement is restricted with respect to the main body 32. The upstream end portion of the shaft 38 is an upstream shaft end portion 39 (bearing means which is a constituent element of the present invention) in a form protruding in a spherical shape (substantially hemispherical). The downstream end portion of the shaft 38 is a downstream shaft end portion 40 (bearing means which is a constituent element of the present invention) having a spherical shape (substantially hemispherical). Both shaft end portions 39, 40 protrude from both end surfaces of the shaft portion 33 of the main body 32.

  The curvature radii of the spherical surfaces of these shaft end portions 39 and 40 are smaller than the curvature radii of the spherical surfaces of the upstream bearing portion 13 and the downstream bearing portion 19. Both shaft end portions 39, 40 are fitted to the corresponding support portions 13, 19 with a clearance for enabling smooth rotation of the stirring member 31, and the shaft ends are supported by the support portions 13, 19. Due to the bearing structure that supports the portions 39 and 40, the stirring member 31 is rotatably supported in a posture in which the rotation shaft thereof is coaxial with the axis of the housing 10.

  Three turning members 41 and two sets of shearing members 42 are alternately arranged in the axial direction of the housing 10 and fixed in a region of the stirring space 11 upstream of the housing space 12. The turning member 41 has an annular shape coaxial with the stirring member 31 and is fixed to the inner periphery of the stirring space 11. A tapered surface that is inclined with respect to the axis is formed at the inner peripheral edge of the turning member 41. The shearing member 42 has a plate shape elongated in the axial direction, and the stirring space 11 has a direction in which the plate surface is parallel to the radial direction and the axis (that is, the plate surface is substantially orthogonal to the circumferential direction). It is fixed to the inner circumference. The shearing member 42 constitutes one set of a plurality of sheets (for example, four sheets) arranged at an equiangular pitch in the circumferential direction. The turning member 41 and the shearing member 42 constitute the stirring unit 30 together with the stirring space 11 and the stirring member 31.

  A holding portion 43 having a substantially cylindrical shape is formed coaxially at a downstream end portion corresponding to the accommodation space 12 in the rotation axis direction of the stirring member 31, and a plurality of driven sides are provided in the holding portion 43. Magnets 44 are accommodated at an equiangular pitch in the circumferential direction. The outer diameter of the holding portion 43 is slightly smaller than the inner diameter of the cylindrical portion 23 (that is, the inner diameter of the accommodation space 12), and each driven magnet 44 is in a posture in which the S pole or the N pole faces the outer peripheral side. It is arranged at a position close to the outer periphery of the holding portion 43 in the radial direction.

  The drive means 21 includes the driven magnet 44 and the rotation drive member 45 described above. The rotary drive member 45 has an annular shape coaxial with the stirring member 31 and is accommodated in the drive chamber 22. The rotation driving member 45 includes a rotating body 46, a plurality of turbine blades 47 provided so as to be able to rotate integrally with the rotating body 46, and a plurality of drive side magnets 48 provided so as to be able to rotate integrally with the rotating body 46. The bearing 49 is configured to be able to rotate while maintaining a posture coaxial with the axis of the housing 10 (the rotation axis of the stirring member 31).

  The turbine blade 47 is formed on the outer periphery of the rotation drive member 45, and the rotation drive member 45 rotates at a predetermined rotation speed (number of rotations) in one direction when the pressurized air discharged from the nozzle 25 hits the turbine blade 47. It is designed to be driven. The rotational speed of the rotation drive member 45 can be adjusted by the pressure of the pressurized air discharged from the nozzle 25. The pressurized air discharged into the drive chamber 22 is discharged from the exhaust port 26 to the outside of the housing 10 (outside of the drive chamber 22).

  The drive side magnet 48 is made of a permanent magnet, corresponds to the drive side magnet 48 accommodated in the accommodation space 12 (cylinder part 23) in the axial direction of the housing 10, and in the radial direction, the cylinder part 23. It is arranged at a position close to the outer periphery (that is, a position close to the inner peripheral surface of the rotation drive member 45). The same number of drive side magnets 48 as the driven side magnets 44 are provided, and are arranged so as to correspond to the drive side magnets 48 in the axial direction and the circumferential direction. Since these drive-side magnets 48 have a magnetic pole opposite to that on the outer peripheral side of the driven-side magnet 44 facing the inner peripheral side, there is no radial magnetic force between the drive-side magnet 48 and the driven-side magnet 44. A suction force is generated. The stirring member 31 is rotated integrally with the rotation driving member 45 by the magnetic attraction force.

  The multi-liquid mixing apparatus of the present embodiment includes a detector 50 and a sensor 51 as detection means for detecting the rotation speed of the stirring member 31. The detector 50 has a cylindrical shape whose axis is parallel to the rotation axis of the stirring member 31, and is embedded in the downstream end of the main body 32 of the stirring member 31. That is, the detector 50 is arranged at a position close to the end surface on the downstream end side of the main body 32 in the rotation axis direction. Further, in the radial direction, the detector 50 is located at a position eccentric in the radial direction from the rotation axis of the stirring member 31 and is disposed across the shaft portion 33 and the diameter-expanded portion 35. That is, a portion of the detector 50 close to the rotation axis of the stirring member 31 is located in the range of the shaft portion 33, and a portion of the detector 50 far from the rotation axis of the stirring member 31 is in the range of the enlarged diameter portion 35. positioned.

  The sensor 51 is always composed of a reed switch that keeps a circuit (not shown) open, but switches the circuit to a closed state by the magnetism of the detector 50 when the detector 50 approaches. The sensor 51 is embedded in the end portion on the upstream end side of the housing 10, and the switch that opens and closes by the magnetism of the detector 50 is located at the position facing the upstream end surface of the stirring member 31 in the axial direction of the housing 10, that is, When the detector 50 is closest to the sensor 51, the switches of the detector 50 and the sensor 51 are arranged at positions so as to be aligned in parallel with the axis of the housing 10. Regarding the positional relationship between the inflow port 14 and the inflow hole 15, the sensor 51 is disposed at a position where it does not interfere with the inflow port 14 and the inflow hole 15 in the radial direction and the circumferential direction.

Next, the operation of this embodiment will be described.
When the main agent and the curing agent are supplied to the upstream end of the stirring space 11 in a state where the stirring member 31 is rotating, the supplied main agent and the curing agent flow in the stirring space 11 to the downstream side, Since it is pushed in the circumferential direction by the stirring blade 37, it flows in the stirring space 11 so as to follow the spiral path as a whole, and during this time, it is stirred and mixed by receiving the shearing action by the stirring blade 37 many times. Further, the main agent and the curing agent move in the radial direction by centrifugal force due to the pressing action of the stirring blade 37 while flowing spirally, and collide with the shearing member 42 when flowing along the inner periphery of the stirring space 11. It is also stirred by being sheared. Further, the main agent and the curing agent sheared by the shearing member 42 are guided to the radial center side by the taper surface of the turning member 41, and are sheared again by the stirring blade 37, pressed in the circumferential direction, and again the diameter. Move outward in the direction. By repeating the above steps alternately or sequentially, the main agent and the curing agent are stirred and mixed to form a mixed paint. The mixed paint generated in this way passes through the gap between the inner periphery of the cylindrical portion 23 and the outer periphery of the holding portion 43 in the accommodation space 12, and further, the communication hole 20, the outflow hole 16, and the outflow port of the bearing member 18. It passes through 17 in order and is supplied to the painting gun.

  Further, while the stirring member 31 is stirring the main agent and the curing agent, the rotational speed (rotational speed) of the stirring member 31 is detected by the detector 50 and the sensor 51. That is, while the stirring member 31 rotates, each time the stirring member 31 rotates, the detector 50 approaches the sensor 51 only once, and a detection signal indicating that the sensor 51 has detected the detector 50 is sent. Output. Therefore, the rotation speed of the stirring member 31 can be detected based on the number of detection signals per unit time output from the sensor 51. And if the pressure of the pressurized air pumped to the drive means 21 is controlled based on this detection result, the rotation speed of the stirring member 31 can be stabilized within an appropriate range. Thereby, a good-quality mixed paint can be obtained.

  In addition, since the detector 50 is arranged at the eccentric position of the stirring member 31 in the radial direction, when the specific gravity of the detector 50 is significantly different from that of the stirring member 31, the center of gravity of the stirring member 31 deviates from the rotation center, There is a concern that the stirring member 31 may run out of shaft during rotation. In this regard, in the present embodiment, the detector 50 is disposed in the vicinity of the proximal end portion of the stirring blade 37 protruding in the radial direction from the outer periphery of the shaft portion 33, that is, the position close to the rotation center of the stirring member 31. Therefore, the center of gravity of the entire stirring member 31 including the detector 50 is located near the center of rotation. Therefore, shaft shake of the stirring member 31 can be avoided.

  Further, the detector 50 is disposed at the upstream end of the stirring member 31 in the rotational axis direction, and the sensor 51 is disposed so as to face the upstream end surface of the stirring member 31 in the rotational axis direction. The arrangement space of the sensor 51 in the radial direction is small.

  Further, since the displacement of the stirring member 31 in the rotation axis direction is regulated by the bearing means (the support portions 13 and 19 and the shaft end portions 39 and 40), the detector 50 and the sensor 51 are opposed to each other in the rotation axis direction. The distance is stabilized, and thereby the detection accuracy by the sensor 51 is improved.

  Further, as a means for transmitting the rotational force to the stirring member 31 accommodated in the stirring space 11, a transmission member provided so as to rotate integrally with the stirring member is penetrated to the outside of the stirring space 11, and the transmission member rotates. A structure that imparts power can be considered. However, in the case where the transmission member rotating in this way penetrates the inside and outside of the stirring space 11, the liquid or mixed paint that has entered the gap between the penetration portions of the transmission member becomes highly viscous and adheres, so that the stirring member 31 There is a concern that the rotational speed becomes unstable.

  On the other hand, in the present embodiment, a rotation driving member 45 that rotates coaxially with the stirring member 31 is provided along the outer periphery of the cylindrical portion 23 that constitutes the stirring space 11, and the driving side magnet that rotates integrally with the rotation driving member 45. 48, a driven magnet 44 that rotates integrally with the stirring member 31 is provided, and the stirring member 31 is rotated integrally with the rotation driving member 45 by a magnetic attractive force between the driving magnet 48 and the driven magnet 44. I am doing so. As described above, since the magnetic force is used as means for applying the rotational force to the stirring member 31, the rotational speed of the stirring member 31 becomes unstable due to the increase in viscosity of the liquid or the mixed paint as described above. Can be avoided.

  In the present embodiment, the detector 50 made of a permanent magnet is arranged only at the upstream end of both ends of the stirring member 31 in the rotation axis direction, and reacts to the magnetism formed by the detector 50. The sensor 51 that performs the detection operation is disposed at the upstream end in the axial direction of the housing 10, and the driven magnet 44 is disposed only at the end of the downstream end of the both ends in the rotation axis direction of the stirring member 31. doing. As described above, since the driven magnet 44 is disposed at a position farthest from the detector 50 in the rotation axis direction of the stirring member 31, the sensor 51 that detects the magnetism of the detector 50 also rotates the stirring member 31. It is arranged at a position far from the driven magnet 44 in the axial direction. Therefore, the sensor 51 is not affected by the magnetism of the driven magnet 44, and the detection function of the sensor 51 can be stabilized.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the detector is arranged in the vicinity of the base end portion of the stirring blade. However, the detector may be arranged in the vicinity of the tip portion in the radial direction of the stirring blade.
(2) In the above embodiment, the detector is arranged so as to extend over both the shaft portion and the stirring blade in the radial direction. However, the detector may be arranged so as to be within the range of the shaft portion in the radial direction. Alternatively, it may be arranged so as to be within the range of the stirring blade on the outer side in the radial direction from the shaft portion.
(3) In the said embodiment, although the sensor was arrange | positioned so as to correspond to the end surface in the rotating shaft direction of a stirring member, you may arrange | position a sensor so that a stirring member may be opposed to radial direction. In this case, the position of the sensor and the detector in the rotation axis direction is not limited to the end of the stirring member, and may be a position closer to the center.
(4) In the said embodiment, although the detector was arrange | positioned in the edge part in the rotating shaft direction of a stirring member, you may arrange | position a detector in the position near the center in the rotating shaft direction of the stirring member. In this case, the sensor is also arranged at a position close to the detector, that is, at a position closer to the center in the rotation axis direction of the stirring member.
(5) In the above embodiment, the magnetic force is used as a means for transmitting the rotational force to the stirring member accommodated in the stirring space. Instead, the transmission member provided to rotate integrally with the stirring member is stirred. It is good also as a form which penetrates to the exterior of space and provides rotational force to this transmission member.
(6) In the above embodiment, a plurality of stirring blades are provided at intervals in the liquid flow direction. However, according to the present invention, the stirring blades may be provided only at one location in the liquid flow direction.
(7) In the above embodiment, the stirring blade is provided on the outer peripheral surface of the stirring member. However, according to the present invention, the stirring member may be cylindrical and the stirring blade may be provided on the inner periphery thereof.
(8) In the above embodiment, two types of liquids (main agent and curing agent) are alternately allowed to flow in a predetermined amount. However, according to the present invention, two or more types of liquids are mixed in a predetermined ratio. Things may be flowed.
(9) In the above embodiment, the case where two types of liquids are mixed has been described. However, according to the present invention, three or more types of liquids may be mixed.
(10) Although the case where the mixed paint obtained by stirring is an aqueous two-component urethane paint has been described in the above embodiment, the present invention describes a paint other than the aqueous two-component urethane paint (for example, a solvent-based paint). ).
(11) In the above embodiment, a reed switch is used as the sensor. However, as the sensor, means other than the reed switch (magnetic sensor) such as a Hall element can be used.
(12) In the above embodiment, as a means for rotationally driving the rotational drive member, the rotational force is transmitted to the rotational drive member using an air turbine structure using air pressure. The driven gear provided on the member may be engaged with the drive gear of the electric motor, and the electric drive force may be transmitted to the rotary drive member through the meshing of the gear.
(13) In the above embodiment, the number of detectors is one, but a plurality of detectors may be provided on one stirring member.

11 ... Agitation space 13 ... Upstream side support (bearing means)
19 ... Downstream bearing (bearing means)
DESCRIPTION OF SYMBOLS 23 ... Cylindrical part 31 ... Stirring member 33 ... Shaft part 37 ... Stirring blade 39 ... Upstream shaft end part (bearing means)
40: Downstream shaft end (bearing means)
44 ... driven-side magnet 45 ... rotational drive member 48 ... drive-side magnet 50 ... detector 51 ... sensor

Claims (4)

A stirring space for circulating a plurality of types of liquid;
A stirring member having a stirring blade and rotating in the stirring space;
A rotation drive member that is driven to rotate coaxially with the stirring member along the outer periphery of the cylindrical portion constituting the stirring space;
A drive-side magnet provided to rotate integrally with the rotary drive member;
A driven magnet provided to rotate integrally with the stirring member;
When the stirring member rotates integrally with the rotation driving member by the magnetic attractive force between the driving side magnet and the driven side magnet, the stirring blades circulate the plurality of types of liquids in the stirring space. In the multi-liquid mixing apparatus in which the mixed paint is obtained by stirring the plurality of types of liquids by rotating in a direction crossing the direction,
A detector that is provided at an eccentric position deviating from the rotation center of the stirring member, and rotates integrally with the stirring member;
A sensor for detecting the position of the detector ,
The detector is made of a permanent magnet, and is arranged at one end of both ends in the rotation axis direction of the stirring member,
The sensor is adapted to perform a detection operation in response to magnetism formed by the detector,
The multi-liquid mixing apparatus , wherein the driven magnet is disposed at the other end of both ends of the stirring member in the rotation axis direction . The stirring member is a form in which the stirring blade protrudes from the outer periphery of the shaft portion;
2. The multi-liquid mixing apparatus according to claim 1, wherein the detector is arranged at a position near a base end portion of the stirring blade in a radial direction of the stirring member. The detector is disposed at an end of the stirring member in the rotation axis direction;
3. The multi-liquid mixing apparatus according to claim 1, wherein the sensor is disposed so as to face an end surface of the stirring member in a rotation axis direction.   4. The multi-liquid mixing apparatus according to claim 3, further comprising bearing means capable of regulating displacement of the stirring member in the rotation axis direction.

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