JP2019051474A - Oil content recovery device - Google Patents

Abstract

To provide an oil content recovery device capable of separating and recovering oil contents surfacing in a coolant tank from a coolant liquid without requiring a separation tank.SOLUTION: An oil content recovery device comprises: a storage unit for storing a coolant liquid containing an oil content; a first member extending in a first direction which forms a predetermined angle to a liquid surface of the coolant liquid stored in the storage part; a second member positioned on an outer side of the first member in a direction which forms a predetermined angle to the first direction and having a plurality of tooth parts in the first direction; a driving unit for causing a part of the first member to make revolving movement; a movement regulation unit for making the oil content sticking to the first member movable to a tooth part by regulating portions of the first member except said part so as to make the same revolving movement as said part, thereby soaking them in the coolant liquid stored in the storage unit; and a recovery unit for recovering the oil content moved to the tooth part.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to an oil content recovery apparatus.

  In a processing apparatus that performs machining such as cutting, a coolant liquid for cooling a tool may be circulated and reused. In this case, the coolant liquid is used at the time of processing a product or the like, and then collected and reused in a coolant tank that is a water storage tank.

  By the way, in order to perform processing smoothly in the processing apparatus, lubricating oil or the like is used. Therefore, when the coolant liquid is recovered in the coolant tank, it is recovered in a state where oil such as lubricating oil is mixed. In the coolant tank, the oil component floats due to the specific gravity difference with the coolant liquid. If this floating oil is left as it is, the deterioration and decay of the coolant progresses, resulting in a decrease in the processing quality of the processed product. Therefore, when the coolant liquid is reused, it is necessary to recover the oil that has floated.

  2. Description of the Related Art A belt-type oil skimmer is widely known as an oil recovery device that recovers floating oil (for example, Patent Document 1). The belt-type oil skimmer has a pair of pulleys that are spaced apart from each other and an endless belt wound between the pulleys. The upper pulley is provided above the coolant level and is attached to a drive motor fixed to the lid of the coolant tank. The lower pulley is immersed in the coolant liquid inside the coolant tank as a weight, thereby applying a certain tension to the endless belt. When the endless belt is rotated by driving the upper pulley to rotate, the oil level of the coolant liquid adheres to the endless belt when the endless belt enters the coolant liquid and when the endless belt is discharged from the coolant liquid. And recovered.

JP 2000-246006 A

  However, in the belt-type oil skimmer, not only the oil but also the coolant liquid adheres to the endless belt. Therefore, there has been a problem that a separate separation tank is required for separating the coolant from the oil collected on the endless belt. In the separation tank, the oil and the coolant are separated due to the difference in specific gravity. The coolant liquid separated in the separation tank is returned to the coolant tank. On the other hand, the oil component separated in the separation tank is discharged from the waste oil outlet.

  An object of the present disclosure is to provide an oil recovery device that can separate and recover the oil floating in the coolant tank from the coolant without requiring a separation tank.

The oil content recovery apparatus according to the present disclosure is:
A reservoir for storing a coolant liquid containing oil;
A first member extending in a first direction that forms a predetermined angle with respect to the liquid level of the coolant liquid stored in the storage section;
A second member disposed outside the first member in a direction forming a predetermined angle with respect to the first direction, and having a plurality of teeth in the first direction;
A drive unit that orbits a portion of the first member;
By restricting the part other than the part of the first member to make the same orbital movement as the part, the oil component immersed in the coolant liquid stored in the storage part and attached to the first member is removed. A movement restricting portion that is movable to the tooth portion;
A recovery unit that recovers the oil that has moved to the tooth part;
Is provided.

  According to the present disclosure, the oil component floating in the coolant tank can be separated and recovered from the coolant liquid without requiring a separation tank.

The figure which shows the whole structure of the oil-component collection | recovery apparatus in one embodiment of this indication Schematic side view of oil content recovery device in the present embodiment The figure explaining the circular motion of the floating oil collection board in this Embodiment The figure explaining the circular motion of the floating oil collection board in this Embodiment The figure explaining the circular motion of the floating oil collection board in this Embodiment The figure explaining the circular motion of the floating oil collection board in this Embodiment The figure explaining the path along which oil moves to the recovery unit

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram illustrating a configuration of an oil content recovery apparatus 100 according to the present embodiment. FIG. 2 is a schematic side view of oil content recovery apparatus 100 in the present embodiment. 1, 2, and 4 illustrate the X axis, the Y axis, and the Z axis. In the following description, the left-right direction in FIG. 1 is referred to as the X direction or the second direction, the right direction is referred to as “+ X direction”, and the left direction is referred to as “−X direction”. 1 is referred to as the Y direction or the first direction, the upward direction is referred to as “+ Y direction”, and the downward direction is referred to as “−Y direction”. Further, in FIG. 1, a direction perpendicular to the paper surface is referred to as a Z direction, a front direction is referred to as a “+ Z direction”, and a back direction is referred to as a “−Z direction”.

  As shown in FIG. 1, the oil recovery device 100 includes a coolant tank 120 (corresponding to the “reservoir” of the present invention), a sawtooth member 140 (corresponding to the “second member” of the present invention), a floating oil recovery plate 150 ( (Corresponding to the “first member” of the present invention), a rotating member 160, a driving unit 170 (see FIG. 2), a movement restricting unit 180, and a collecting unit 190.

  The coolant tank 120 stores a coolant liquid 130 containing oil. The coolant liquid 130 is used to cool the tool in a processing apparatus that performs machining such as cutting. The coolant liquid 130 is collected in the coolant tank 120 after being used in processing a product or the like in the processing apparatus. In the processing apparatus, lubricating oil or the like is used for smooth processing. Therefore, when the coolant liquid 130 is recovered in the coolant tank 120, it is recovered in a state in which oil such as lubricating oil is mixed. In the coolant tank 120, the oil component floats due to the specific gravity difference with the coolant liquid 130.

  The floating oil recovery plate 150 is a metal flat plate member extending in the Y direction (vertical direction in FIG. 1, first direction) perpendicular to the liquid level of the coolant liquid 130 stored in the coolant tank 120. In the present embodiment, the floating oil recovery plate 150 is a stainless steel thin plate. As shown in FIG. 2, a through hole 152 is provided in the upper end portion 151 of the floating oil recovery plate 150. A drive shaft 156 is inserted into the through hole 152 in the Z direction (left and right direction in FIG. 2). A first guide bearing 153 is provided at one end of the drive shaft 156 (left end in FIG. 2).

  As shown in FIG. 1, two second guide bearings 154 are provided on the upper end portion 151 of the floating oil recovery plate 150. If the upper end portion 151 of the floating oil collecting plate 150 is drawn with an isosceles triangle having two base angles at positions separated from each other in the X direction (left and right direction in FIG. 1), the first guide bearing 153 is isosceles It is arranged at the vertex position of the apex angle in the triangle. The two second guide bearings 154 are arranged at the vertex position of the base angle in the above isosceles triangle.

  The saw-tooth member 140 extends in the + Z direction (left side in FIG. 2) and −Z direction (right side in FIG. 2) of the floating oil recovery plate 150 in the Z direction (left and right direction in FIG. 2) orthogonal to the Y direction (first direction). Fixed and arranged. The sawtooth member 140 has a plurality of sawtooth portions 144 in the Y direction (vertical direction in FIG. 1, first direction). The tooth portion 144 is provided up to a position corresponding to the lower end portion 155 of the floating oil recovery plate 150.

  The rotating member 160 is connected to the other end (right end in FIG. 2) of the drive shaft 156. A drive unit 170 (for example, a motor) that rotates the rotation member 160 in the clockwise direction in FIG. 1 under the control of a control unit (not shown) is connected to the rotation member 160 (see FIG. 2). The drive unit 170 is supported by the base member 171 (see FIG. 2). The drive shaft 156 is rotationally driven integrally with the rotary member 160 by the drive unit 170. Since the drive shaft 156 is inserted into the through hole 152 of the floating oil recovery plate 150, when the drive shaft 156 is driven to rotate, the upper end portion 151 of the floating oil recovery plate 150 rotates (shown by a one-dot chain line in FIG. 1). Circular motion along the trajectory).

  As shown in FIG. 1, the movement restricting portion 180 is an LM guide having a linear guide 181 and a guide plate 184. The linear guide 181 has a rail 182 and a block 183. The rail 182 is fixed to the base member 171. The rail 182 guides the block 183 in the vertical direction (Y direction, first direction) in FIG. The end of the guide plate 184 in the −X direction (the left end in FIG. 1) is fixed to the block 183. Thereby, the linear guide 181 guides the floating oil recovery plate 150 in the vertical direction (Y direction, first direction) in FIG. 1 via the guide plate 184, the first guide bearing 153, and the second guide bearing 154. In other words, the linear guide 181 regulates the movement and inclination of the floating oil recovery plate 150 other than the vertical direction in FIG. 1 (for example, the X direction and the second direction).

  As shown in FIG. 1, the guide plate 184 extends in the X direction. A first guide bearing 153 is in contact with one side edge (the upper edge in FIG. 1) of the guide plate 184 so as to allow rolling. Two second guide bearings 154 are in contact with the other side edge (the lower side edge in FIG. 1) of the guide plate 184 so as to allow rolling. That is, the movement restricting portion 180 has a structure in which the guide plate 184 is sandwiched between the first guide bearing 153 and the two second guide bearings 154 from the vertical direction. With this structure, the floating oil recovery plate 150 is guided in the left-right direction (X direction, second direction) in FIG. In other words, the above configuration restricts the movement and inclination of the floating oil collecting plate 150 in directions other than the left and right directions in FIG. 1 (for example, the Y direction and the first direction).

  As described above, the movement restricting portion 180 guides the portion other than the upper end portion 151 of the floating oil recovery plate 150 in a direction parallel to the direction of the circular motion of the upper end portion 151 of the floating oil recovery plate 150. That is, the movement restricting unit 180 guides the floating oil collecting plate 150 so that the floating oil collecting plate 150 moves in the same orbital manner as the drive shaft 156 at any position.

  As shown in FIG. 1, the collection unit 190 is fixedly arranged in the + X direction (right side in FIG. 1) of the sawtooth member 140.

  Next, the operation of the oil content recovery apparatus 100 will be described. The drive unit 170 rotates the rotation member 160 under the control of the control unit. As a result, the drive shaft 156 connected to the rotating member 160, and thus the upper end portion 151 of the floating oil recovery plate 150 into which the drive shaft 156 is inserted, orbits. Since the floating oil collecting plate 150 is guided by the movement restricting unit 180 so as to make the same orbiting movement as the drive shaft 156 at any position, the entire floating oil collecting plate 150 is parallel to the surface of the floating oil collecting plate 150. Above, it makes a circular motion with respect to the sawtooth member 140.

  As described above, in the present embodiment, the driving shaft 156, the rotating member 160, the driving unit 170, and the movement restricting unit 180 realize a revolving mechanism that revolves the floating oil collecting plate 150 with respect to the sawtooth member 140. . FIG. 3 shows a state in which the floating oil recovery plate 150 rotates in the clockwise direction with respect to the sawtooth member 140 in the order of FIGS. 3A, 3B, 3C, and 3D.

  As the floating oil recovery plate 150 revolves, the floating oil recovery plate 150 is immersed in the coolant liquid 130 stored in the coolant tank 120. As a result, the oil (oil film) on the upper surface of the coolant liquid 130 becomes the floating oil recovery plate. It adheres to 150. The fine particles of the emulsified oil also adhere to the floating oil collecting plate 150.

  Thereafter, the floating oil collecting plate 150 makes a circular motion, so that the portion of the floating oil collecting plate 150 to which the oil component is attached contacts the upper side of the tooth portion 144, and the oil component moves to the upper side of the tooth portion 144 (mounts). ). In the present embodiment, the floating oil recovery plate 150 moves in the same orbit as the drive shaft 156 at any position. Therefore, for example, even at the lower end portion 155 of the floating oil recovery plate 150, the upper end portion 151 (the drive shaft 156 is inserted). The amount of oil equivalent to that of the end portion can be adhered and moved to the upper side of the tooth portion 144 provided at the position corresponding to the lower end portion 155.

  Thereafter, the floating oil collecting plate 150 makes a revolving motion, so that the oil that has moved to the upper side of the tooth portion 144 adheres to the floating oil collecting plate 150 again. Therefore, the oil adhering to the floating oil recovery plate 150 moves to the upper side of the tooth portion 144 positioned above each time the circular movement (circulation cycle) of the floating oil recovery plate 150 is performed. In the present embodiment, considering the circulation direction of the floating oil recovery plate 150, the upper side of the tooth portion 144 is inclined rather than horizontal, so that the movement of oil for each circulation cycle is made smooth. Further, since the tooth portion 144 has a shape that forms an acute angle at the end portion, that is, a shape that reduces a contact area with the floating oil recovery plate 150, the fall of oil from the surface of the floating oil recovery plate 150 is minimized. Can be limited. If the contact area with the floating oil collecting plate 150 is large at the end, the oil component is scraped off at the contact portion.

  Thereafter, the floating oil collecting plate 150 makes a circular motion, so that the oil adhering to the floating oil collecting plate 150 moves to the upper side of the tooth portion 144 located at the uppermost position.

  Then, the oil that has moved to the upper side of the tooth portion 144 positioned at the uppermost position moves from one end portion of the upper edge of the tooth portion 144 positioned at the uppermost position to the other end portion as the floating oil collecting plate 150 rotates. Then, it flows down from the other end toward the recovery unit 190 (see FIG. 1). The collection unit 190 collects oil that has flowed down from the other end of the upper side of the tooth portion 144. For example, the oil component recovered by the recovery unit 190 is discharged from the waste oil outlet.

  FIG. 4 is a diagram for explaining a path along which oil components attached to the floating oil collection plate 150 move to the collection unit 190. As indicated by solid arrows in FIG. 4, the floating oil recovery plate 150 makes a circular motion, so that the amplitude of the floating oil recovery plate 150 in the left-right direction (X direction, second direction) in FIG. It becomes equal in any position of 150 up and down directions. This means that the floating oil recovery plate 150 moves with the same amplitude with respect to the tooth portion 144 provided at any position in the vertical direction. As a result, a sufficient amount of oil adheres even at the lower end 155 of the floating oil recovery plate 150. Then, a sufficient amount of oil adhering to the floating oil recovery plate 150 is provided at a position corresponding to the lower end portion 155 as the floating oil recovery plate 150 revolves as shown by the dotted arrow in FIG. It moves to the upper side of the tooth part 144a. And the oil which moved to the upper side of the tooth part 144a adheres to the floating oil collection | recovery board 150 again when the floating oil collection | recovery board 150 carries out a revolving motion. Then, a sufficient amount of oil adhering to the floating oil recovery plate 150 moves to the upper side of the tooth portion 144b as the floating oil recovery plate 150 rotates. Thereafter, the oil component sequentially moves to the upper side of the tooth portions 144c, 144d, 144e, 144f, 144g, 144h, 144i, 144j, and 144k by the revolving motion of the floating oil collecting plate 150.

  The oil component that has moved to the upper side of the tooth portion 144k located at the uppermost position is moved from the one end portion (left end portion in FIG. 4) to the other end portion (right end portion in FIG. Part) in the direction of the part) by a predetermined distance (a distance corresponding to the rotational radius of the drive shaft 156). Thereafter, the oil that has moved to the other end flows down from the other end toward the recovery unit 190 (see FIG. 1).

  As described above, according to the oil content recovery apparatus 100 according to the present embodiment, the coolant tank 120 that stores the coolant liquid 130 that contains the oil content, and the coolant tank 120 that is perpendicular to the liquid level of the coolant liquid 130 that is stored in the coolant tank 120. A floating oil collecting plate 150 extending in one direction, a sawtooth member 140 disposed outside the first member in a direction orthogonal to the first direction, and having a plurality of teeth in the first direction; A revolving mechanism that moves the entire floating oil recovery plate 150 in the same orbital motion to move the oil adhering to the floating oil recovery plate 150 immersed in the coolant liquid 130 stored in the coolant tank 120 to the tooth portion; And a recovery unit 190 that recovers the oil that has moved to the position. As the floating oil collecting plate 150 makes a circular motion, the oil adhering to the floating oil collecting plate 150 moves to the upper side of the tooth portion 144. Then, the oil component that has moved to the upper side moves to the upper side of the tooth portion 144 positioned further upward. Then, the oil component that has moved to the upper side of the tooth portion 144 located at the uppermost position is recovered by the recovery portion 190. Thereby, the oil component floating in the coolant tank 120 can be separated and recovered from the coolant liquid 130 without requiring a separation tank.

  Moreover, according to the oil content collection apparatus 100 concerning this Embodiment, the drive part 170 which makes the upper end part 151 of the floating oil collection | recovery board 150 circulate, and parts other than the upper end part 151 in the levitation oil collection | recovery board 150 carry out a circular movement. And a movement restricting unit 180 that guides in a direction parallel to the direction. As a result, the floating oil recovery plate 150 moves in the same circular motion as the drive shaft 156 at any position. For example, even at the lower end portion 155 of the floating oil recovery plate 150 in FIG. 1, for example, the upper end portion 151 (the drive shaft 156 is inserted). The amount of oil equivalent to that of the end portion can be adhered and moved to the upper side of the tooth portion 144.

  In addition, according to the oil content recovery apparatus 100 according to the present embodiment, even when the bottom of the coolant tank 120 is shallow, the lower end portion 155 of the floating oil recovery plate 150 is immersed in the coolant liquid 130 so that the lower end portion 155 It becomes possible to collect the adhered oil.

  In the oil content recovery apparatus 100 according to the above embodiment, the upper side of the tooth portion 144k is positioned on the right side in FIG. 1 from the viewpoint that the oil content that has moved to the upper side of the tooth portion 144k located at the top is easily recovered by the recovery portion 190. You may make it incline below with respect to a direction. Further, a recovery groove that guides the oil component that has moved to the upper side along the upper side of the tooth portion 144k from one end (the left end in FIG. 1) to the other end (the right end in FIG. 1) may be provided.

  In the above embodiment, the floating oil collecting plate 150 extends in a direction perpendicular to the liquid level of the coolant liquid 130. However, the present invention is not limited to this, and is inclined with respect to a direction perpendicular to the liquid level, for example. You may extend in the direction to do. Further, the sawtooth member 140 is fixed to the outside of the floating oil collecting plate 150 in a direction orthogonal to the Y direction (first direction). However, the present invention is not limited to this, and for example, forms a predetermined angle with respect to the Y direction. It may be fixed to the outside of the floating oil collecting plate 150 in the direction. In addition, the direction in which the floating oil collecting plate 150 is guided by the movement restricting unit 180 is the X direction (second direction). However, the present invention is not limited to this, for example, in a direction that forms a predetermined angle with respect to the X direction. There may be.

  In addition, each of the above-described embodiments is merely an example of actualization in carrying out the present invention, and the technical scope of the present invention should not be construed in a limited manner. That is, the present invention can be implemented in various forms without departing from the gist or the main features thereof.

  The present disclosure is useful as an oil content recovery apparatus that is required to separate and recover the oil component floating in the coolant tank from the coolant liquid without requiring a separation tank.

DESCRIPTION OF SYMBOLS 100 Oil content collection device 120 Coolant tank 130 Coolant liquid 140 Sawtooth member 150 Floating oil collection board 151 Upper end part 152 Through-hole 153 1st guide bearing 154 2nd guide bearing 155 Lower end part 156 Drive shaft 160 Rotating member 170 Drive part 180 Movement control part 181 Linear guide 182 Rail 183 Block 184 Guide plate 190 Collection part

Claims (4)

A reservoir for storing a coolant liquid containing oil;
A first member extending in a first direction that forms a predetermined angle with respect to the liquid level of the coolant liquid stored in the storage section;
A second member disposed outside the first member in a direction forming a predetermined angle with respect to the first direction, and having a plurality of teeth in the first direction;
A drive unit that orbits a portion of the first member;
By restricting the part other than the part of the first member to make the same orbital movement as the part, the oil component immersed in the coolant liquid stored in the storage part and attached to the first member is removed. A movement restricting portion that is movable to the tooth portion;
A recovery unit that recovers the oil that has moved to the tooth part;
An oil content recovery device.   The oil recovery device according to claim 1, wherein the tooth portion is provided up to a position corresponding to a lower end portion of the first member.   The movement restricting portion includes a linear guide that guides the first member in the first direction, and a second direction that forms a predetermined angle with respect to the first direction and the outer direction of the first member. The oil content recovery apparatus according to claim 1, further comprising a guide plate that guides the first member. The linear guide regulates the movement of the first member in the second direction;
The oil content recovery apparatus according to claim 3, wherein the guide plate regulates movement of the first member in the first direction.

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