JP6122887B2 - Sludge dewatering and solidification equipment - Google Patents

Description

  The present invention relates to a sludge dewatering / solidifying device that removes sludge such as machining waste from a liquid such as a coolant supplied to a machine tool and deliquidizes and solidifies the sludge.

  In general, a machine tool such as a honing machine or a grinding machine processes a workpiece (workpiece) disposed in a processing section while supplying coolant such as grinding fluid or cutting fluid. And the workpiece | work waste generated in the case of a process is collect | recovered with a coolant. The collected used coolant is filtered by a filter device to remove processing waste and reused.

  Patent Document 1 listed below discloses an apparatus that drains and solidifies sludge of processing waste removed by a filter device. This liquid removal / solidification device includes a pressurized container having an open bottom surface and an open / close lid that closes the bottom surface of the pressurized container. The opening / closing lid is provided with a filter body capable of passing coolant and depositing sludge. Then, the sludge is introduced into the pressurized container together with the coolant from the upper side, and the sludge is removed and solidified by introducing the compressed air into the pressurized container in a state where the sludge is received by the filter body. When the solidified sludge accumulates to some extent, the opening / closing lid is opened, and the solidified sludge is taken out from the pressurized container.

JP 2010-279860 A

  Since the conventional dewatering / solidifying device sends compressed air into the pressurized container and compresses sludge while compressing the sludge, it solidifies while the sludge strongly adheres to the inner peripheral surface of the pressurized container. Even if the opening / closing lid is opened, it may not be taken out from the pressurized container. When such a phenomenon occurs, the apparatus must be stopped and the sludge must be taken out manually, which requires extra effort and time.

  An object of the present invention is to provide a sludge dewatering / solidifying apparatus that can reliably remove solidified sludge from a processing container such as a pressurized container.

(1) The sludge dewatering / solidifying device according to the present invention is:
A treatment container having a discharge port at the lower end and into which a liquid containing sludge is introduced;
A lid for passing the liquid introduced into the processing vessel and depositing the sludge; and a lid for closing the discharge port;
An opening and closing drive unit for moving the lid to open and close the discharge port;
A liquid removal / solidification means for draining and solidifying sludge on the filter body;
An extrusion means for extruding the sludge solidified in the processing container from the discharge port ,
The extruding means moves the extruding member up and down between an extruding member that pushes the solidified sludge, a rising position located above the sludge, and a descending position that pushes the sludge downward. An extrusion drive unit,
The push driving unit moves the push member downward in conjunction with the operation of opening the lid .

According to the present invention, even if sludge solidified in the processing container adheres to the inner surface of the processing container, the sludge can be pushed out by the pushing means and reliably discharged from the discharge port.
In the present specification, “sludge” refers to a sludge in which grinding dust generated in a machine tool, machining waste such as cutting waste, etc. contain liquid and become muddy. “Solidified sludge (also referred to as“ solidified sludge ”)” refers to a solidified product obtained by removing liquid from the sludge. The liquid containing sludge refers to a liquid in which sludge (processing waste) is mixed in the liquid for the purpose of causing the sludge to flow.

(2) It is preferable that at least the lower side of the inner surface of the processing container is expanded downward.
With such a configuration, if the solidified sludge moves downward as much as possible, it is separated from the inner surface of the processing container, so that the sludge can be more reliably discharged from the processing container.

(3) In the configuration of (1) , the pushing means includes an pushing member that pushes the solidified sludge, an ascending position that is located above the sludge, and a descending position that pushes the sludge downward. An extruding drive unit that moves the extruding member up and down .
Ri by this configuration, the pushing member by the extrusion drive unit by moving from above the sludge downwards, extruded sludge downwards, can be discharged from the outlet of the processing chamber.

(4) Further, in the above configuration (1), the extrusion drive unit, in conjunction with the operation of opening the lid, Before moving the pushing member downward.
With such a configuration, the sludge can be pushed out by the pushing member in accordance with the timing of opening the lid.

(5) The opening / closing drive unit is configured to close the discharge port by raising the lid and to open the discharge port by lowering, and to move the push member up and down. You may also serve.
Since the opening / closing drive unit also serves as the push drive unit, the apparatus can be reduced in size and cost, and the operation of opening the lid and the operation of moving the push member downward can be reliably linked.

(6) The push-out member is made of a perforated plate in which a large number of through-holes penetrating in the vertical direction are formed. You may let a hole pass.
With such a configuration, sludge can be uniformly deposited on the filter body of the lid. Further, the number of parts can be reduced as compared with a case where a member for diffusing liquid containing sludge is provided separately from the extrusion member.

(7) The sludge dewatering / solidifying device according to the present invention is:
A treatment container having a discharge port at the lower end and into which a liquid containing sludge is introduced;
A lid for passing the liquid introduced into the processing vessel and depositing the sludge; and a lid for closing the discharge port;
An opening and closing drive unit for moving the lid to open and close the discharge port;
A liquid removal / solidification means for draining and solidifying sludge on the filter body;
An extrusion means for extruding the sludge solidified in the processing container from the discharge port,
The opening and closing unit is one that is arranged above the processing container.
According to the present invention, even if sludge solidified in the processing container adheres to the inner surface of the processing container, the sludge can be pushed out by the pushing means and reliably discharged from the discharge port. Further, when the opening / closing drive unit is disposed below the processing container, a means for preventing the liquid discharged from the processing container from being applied to the opening / closing drive unit is necessary. Such a means becomes unnecessary by arrange | positioning.

(8) removing the liquid-solid apparatus is provided with a inlet tube for introducing a liquid containing sludge from the top of the processing container, wherein the inlet tube, the within range of the opening and closing portion when viewed in plan view It is preferable that they are arranged.
With such a configuration, it is possible to reduce the size of the liquid removal / solidification device.

(9) It is preferable that the opening / closing drive unit is configured by a cylindrical cylinder device having a vertical axis, and the introduction pipe is disposed in a central cylinder of the cylinder device.
With such a configuration, the introduction pipe can be suitably arranged within the plane range of the opening / closing drive unit. Further, the introduction pipe can be arranged in the vertical direction in the central cylinder of the cylinder device, and the flow resistance when introducing the liquid containing sludge into the processing container is reduced, and the liquid is introduced smoothly. Can do.

(10) It is preferable that the introduction pipe is detachably attached to a central cylinder of the cylinder device.
With such a configuration, the introduction pipe can be easily maintained and replaced.

(11) It is preferable that an opening / closing valve for opening and closing the introduction pipe is disposed in the central cylinder of the cylinder device.
Even with such a configuration, the liquid removal / solidification device can be downsized.

(12) The liquid removal / solidification apparatus preferably includes a filter device for removing sludge from the liquid above the processing container, and a liquid containing sludge is introduced into the processing container from the filter device.
With such a configuration, it is possible to smoothly introduce a liquid containing sludge downward from the filter device to the processing container.

  According to the present invention, the solidified sludge in the processing container can be reliably taken out by the extrusion means.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic overall view showing a sludge dewatering / solidifying device according to a first embodiment of the present invention. FIG. 2 is a schematic overall view of the liquid removal / solidification apparatus. It is the sectional view on the AA line of FIG. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is sectional explanatory drawing which shows the principal part of the liquid removal and solidification apparatus provided with the processing container which concerns on a modification. It is a schematic front view (partial sectional view) showing a sludge dewatering / solidifying device according to a second embodiment of the present invention. It is a schematic side view of a liquid removal and solidification apparatus.

<First Embodiment>
[overall structure]
1 and 2 are schematic overall views showing a sludge dewatering / solidifying apparatus according to a first embodiment of the present invention.
The liquid removal / solidification device 10 is used for purifying coolant used in a machine tool such as a honing machine, for example. The liquid removal / solidification apparatus 10 includes a filter device 11, a processing container 12, an opening / closing means 13, a liquid removal / solidification means 16 (see FIGS. 3 and 4), a discharge means 14, and an extrusion means 15. And. 1 shows a state when the sludge S is solidified in the processing container 12, and FIG. 2 shows a state when the solidified sludge S is discharged from the processing container 12.

  The filter device 11 is supplied with coolant used in the machine tool, removes sludge such as machining waste from the coolant, and returns the purified coolant to a tank (not shown). The filter device 11 may be, for example, a magnetic filter device that adsorbs sludge to a filter medium by magnetic force, or may be a cyclone filter device that centrifuges sludge by swirling flow. The upper end of the introduction pipe 17 is connected to the filter device 11, and the sludge removed by the filter device 11 is discharged downward through the introduction pipe 17.

The processing container 12 is arrange | positioned under the filter apparatus 11, and the sludge removed by the filter apparatus 11 is introduce | transduced with a coolant. As shown in FIGS. 3, 4, and 6, the processing container 12 is formed in a cylindrical shape having upper and lower ends opened.
The upper end of the processing container 12 is closed by an opening / closing drive unit (cylinder device) 22 of the opening / closing means 13 described later. The lower end opening of the processing container 12 constitutes a discharge port 12 d for discharging the coolant, and is closed by the lid body 21 of the opening / closing means 13. A lower end portion of the introduction pipe 17 is connected to the upper portion of the processing container 12, and coolant and sludge discharged from the filter device 11 are introduced. Further, the inner peripheral surface 12a of the processing container 12 is expanded in a tapered shape so that the inner diameter increases toward the lower side. The lower end portion of the processing container 12 is connected to a discharge chamber 53 in which the coolant after the sludge is removed is discharged.

The opening / closing means 13 includes a lid 21 that closes the lower end of the processing container 12 and an opening / closing drive unit 22 that opens and closes the discharge port 12d of the processing container 12 by moving the lid 21 up and down. The lid 21 is disposed in the discharge chamber 53.
The lid 21 has an opening 21a at the center. The opening 21a is provided with a filter body 23 that allows the coolant to pass therethrough and deposits sludge. The filter body 23 of the present embodiment includes a mesh body 23a formed of a wire mesh or the like, and a holding plate 23b that supports the mesh body 23a from below. A through-hole penetrating vertically is formed in the holding plate 23b. The mesh 23a has a size that allows the coolant to pass therethrough and is formed to be the same size as or slightly larger than the processing waste in the sludge. Then, the coolant introduced into the processing container 12 passes through the mesh body 23a and is discharged downward, and the processing waste in the sludge may pass through the mesh body 23a in the initial stage, but the mesh body 23a. The processing waste accumulated on the top functions as a filter so that it can be reliably captured.

As shown in FIGS. 3 to 5, the opening / closing drive unit 22 is configured by a cylinder device such as an air cylinder or a hydraulic cylinder. Specifically, the cylinder device 22 includes a cylinder body 25 and a piston 26.
The cylinder body 25 includes an outer cylinder 27, an inner cylinder 28, a top plate 29, and a bottom plate 30.
The outer cylinder 27 is formed in a cylindrical shape having a vertical axis, and an upper end and a lower end are open.

The inner cylinder 28 is also formed in a cylindrical shape having a vertical axis, and the upper end and the lower end are open. The inner cylinder 28 has an outer diameter smaller than that of the outer cylinder 27, and is disposed concentrically with the outer cylinder 27 inside the outer cylinder 27.
The top plate 29 is formed in a disk shape and is connected to the upper ends of the outer cylinder 27 and the inner cylinder 28. The bottom plate 30 is also formed in a disk shape and is connected to the lower ends of the outer cylinder 27 and the inner cylinder 28. Openings 29 a and 30 a communicating with the inside of the inner cylinder 28 are formed at the center of the top plate 29 and the bottom plate 30.

  The piston 26 is disposed inside the cylinder body 25 and is formed in a ring shape having an outer diameter slightly smaller than the outer cylinder 27 and an outer diameter slightly larger than the inner cylinder 28. The piston 26 divides the inside of the cylinder body 25 into an upper space and a lower space, and slides in the vertical direction. A seal member (not shown) is provided on the outer peripheral surface and inner peripheral surface of the piston 26 to maintain a sealing property between the inner peripheral surface of the outer tube 27 and the outer peripheral surface of the inner tube 28.

  The top plate 29 and the bottom plate 30 are respectively provided with supply ports 31 and 32 to which working air for sliding the piston 26 up and down is supplied. A compressed air source 50 is connected to each supply port 31, 32 via a pipe 54. A switching valve 55 is provided in the pipe 54, and compressed air is switched and supplied to the supply ports 31 and 32.

The upper ends of two support rods (support members) 33 are attached to the lower surface of the piston 26. The support rod 33 is arranged along the vertical direction, and slidably penetrates the bottom plate 30. The lower end of the support rod 33 is connected to the lid 21.
With the above configuration, when the piston 26 moves up and down by the compressed air supplied from the supply ports 31 and 32 into the cylinder body 25, the lid 21 also moves up and down via the support rod 33, and the processing container 12 is discharged. The outlet 12d is opened and closed.

  An introduction pipe 17 is disposed at the center of the cylindrical cylinder body 25. Specifically, the upper fixing member 35 is detachably attached to the central opening 29 a of the top plate 29. A lower fixing member 36 is detachably attached to the center opening 30 a of the bottom plate 30. The introduction pipe 17 has an upper end fixed to the upper fixing member 35 and a lower end fixed to the lower fixing member 36 in a detachable manner. The upper fixing member 35 and the lower fixing member 36 are fitted between the top plate 29 and the bottom plate 30 while maintaining airtightness.

  The upper fixing member 35 and the lower fixing member 36 are connected by a connecting rod 37. Therefore, the upper fixing member 35, the lower fixing member 36, and the introduction pipe 17 are integrated to form one introduction pipe unit 40. Therefore, the entire introduction pipe unit 40 can be attached to and detached from the cylinder body 25 of the cylinder device 22.

An air chamber 41 is formed between the inner cylinder 28 of the cylinder body 25 and the introduction pipe 17. The top plate 29 is formed with an introduction port 42 for introducing compressed air into the air chamber 41. A compressed air source 51 is connected to the introduction port 42.
The introduction pipe 17 has flexibility, and is compressed in the radial direction by the air introduced into the air chamber 41 as shown by a two-dot chain line in FIG. Can be closed. That is, the introduction pipe 17 functions as an on-off valve itself. An open / close valve 57 is provided in the pipe 56 connecting the compressed air source 51 and the introduction port 42 to switch whether compressed air can be supplied. The compressed air source 51 may also be used as the compressed air source 50 for the cylinder device 22.

  The liquid removal / solidification means 16 includes a supply port 43 formed in the processing container 12 and a compressed air source 52 connected to the supply port 43 via a pipe 58. The coolant and sludge introduced into the processing container 12 from the filter device 11 via the introduction pipe 17 are temporarily accumulated on the filter body 23, and the coolant gradually passes through the filter body 23 and is discharged downward. In this process, the liquid removal / solidification means 16 applies pressure to the coolant and sludge accumulated in the processing container 12 by supplying compressed air from the compressed air source 51 into the processing container 12. Facilitates the discharge of coolant. Thereby, the sludge S remaining on the filter body 23 is drained and solidified. The pipe 58 is provided with an open / close valve 59 to switch whether compressed air can be supplied. The compressed air source 52 may also be used as the compressed air sources 50 and 51 for the cylinder device 22 or the introduction pipe 17.

  A height sensor 44 that measures the height of the sludge S that is solidified and deposited on the filter body 23 is provided in the processing container 12. The height sensor 44 is provided with a detector 44a that is suspended downward from the upper portion of the processing container 12, and detects the height of the detector 44a by contacting the solidified sludge S. . For example, the detector 44a is an electrode rod, and the height can be detected by a change in voltage or current when sludge contacts the detector 44a.

  When the height of the sludge S detected by the height sensor 44 exceeds a predetermined value, the sludge S is discharged from the processing container 12. Specifically, the lid 21 is moved downward by the cylinder device 22 to open the lower end opening of the processing container 12. The sludge S accumulated on the filter body 23 descends together with the lid body 21 and is taken out from the processing container 12 downward.

  As shown in FIGS. 1 and 2, the discharging means 14 includes a scraper member 45 and a discharge driving unit 46 that moves the scraper member 45 in the horizontal direction. The discharge drive unit 46 can be configured by a cylinder device such as an air cylinder or a hydraulic cylinder. The discharge means 14 pushes the sludge S on the filter body 23 of the lid body 21 descending from the processing container 12 in the horizontal direction by the scraper member 45 and discharges it from a discharge port 53 a formed on the side wall of the discharge chamber 53. The discharge port 53a is opened and closed by a closing plate 53b.

  The extrusion means 15 pushes out the sludge S so as not to remain in the processing container 12 when the solidified sludge S on the filter body 23 is taken out from the processing container 12 by opening the lid 21.

Specifically, the extruding means 15 includes an extruding member 47 that extrudes the sludge S, and an extruding drive unit 48 that moves the extruding member 47 up and down.
The extrusion member 47 is made of a circular thin plate material, and is disposed substantially horizontally. The outer diameter of the extruding member 47 is slightly smaller than the inner diameter of the processing container 12, and a gap t (see FIG. 6) is formed between the inner peripheral surface 12 a of the processing container 12 and the outer peripheral edge of the extruding member 47. ing.

  The extrusion drive unit 48 is also used by the opening / closing drive unit 22 described above. That is, the extrusion drive unit 48 is formed of a cylinder device having the cylinder body 25 and the piston 26. The lower end of the piston 26 is connected to the upper ends of two connecting rods 49 arranged along the vertical direction. The connecting rod 49 passes through the bottom plate 30 of the cylinder body 25 and is connected to the pushing member 47 in the processing container 12. Then, the push-out member 47 moves the piston 26 up and down in the cylinder body 25, so that the ascending position positioned above the sludge S solidified on the filter body 23 and the descending position pushing the sludge S downward. Move up and down between.

  By providing the extrusion means 15 as described above, the sludge S solidified on the filter body 23 adheres firmly to the inner peripheral surface of the processing vessel 12, and the sludge S falls by its own weight when the lid body 21 is lowered. Even if it is not, sludge can be reliably taken out from the processing container 12 by the pushing member 47 moving downward and pushing down the sludge S. Further, since the pushing member 47 is provided in a range covering substantially the entire cross-sectional area of the processing container 12, only a part of the sludge S is pushed out, and the outer peripheral portion remains attached to the outer peripheral surface of the processing container 12. Can be suppressed.

Since the pushing drive unit 48 is also used as the opening / closing drive unit 22, the pushing member 47 moves up and down in conjunction with the opening and closing of the lid 21. Therefore, the pushing member 47 can be appropriately lowered at the timing when the lid 21 is opened. Since the extrusion drive unit 48 is also used as the opening / closing drive unit 22 , it is possible to reduce the size of the apparatus and to reduce the cost by reducing the number of parts as compared with the case where these are provided separately.

The outer peripheral edge of the extruding member 47 and the inner peripheral surface 12a of the processing container 12 are not in direct contact with each other, and a gap t is formed between them, so that resistance when the extruding member 47 is moved up and down The wear and damage of the extrusion member 47 can be suppressed.
Further, by forming a gap between the extrusion member 47 and the processing container 12, it becomes difficult to remove sludge adhering to the inner peripheral surface 12a of the processing container 12, but the inner peripheral surface 12a of the processing container 12 expands downward. Since the sludge is slightly lowered, the sludge is separated from the inner peripheral surface 12a. Therefore, even if the gap is formed, the discharge of sludge from the processing container 12 can be promoted.

A large number of through holes 47 a are formed on the plate surface of the extrusion member 47. The coolant including the sludge introduced into the processing container 12 from the introduction pipe 17 falls on the filter body 23 through the through hole 47a and the gap t after colliding with the pushing member 47.
Therefore, the coolant and the sludge introduced into the processing container 12 are diffused in the horizontal direction by colliding with the extrusion member 47 and uniformly fall on the filter body 23. Therefore, a filter layer made of processing waste is uniformly formed on the filter body 23, and it is possible to prevent the compressed air supplied to the processing container 12 from escaping from a part of the filter body 23.

  The cylinder device 22 constituting the opening / closing drive unit 22 and the extrusion drive unit 48 is disposed above the processing container 12. In the prior art (see Patent Document 1), since the cylinder device that opens and closes the lid is disposed below the processing container, it is necessary to protect the air cylinder from being contaminated by the coolant discharged from the processing container. However, in this embodiment, such measures are not necessary.

  The cylinder device 22 is formed in a cylindrical shape, and an introduction pipe 17 for introducing coolant and sludge from the filter device 11 to the processing container 12 is arranged in the cylinder. Therefore, the introduction pipe 17 can be disposed within the plane range and the height range of the cylinder device 22, which can contribute to the downsizing of the liquid removal / solidification device 10. Further, since the introduction pipe 17 also serves as an opening / closing valve, this opening / closing valve can also be disposed within the plane range and the height range of the cylinder device 22, contributing to further downsizing of the liquid removal / solidification device 10. can do.

  In addition, by arranging the introduction pipe 17 at the center of the cylinder device 22, the introduction pipe 17 can be arranged along the vertical direction. Therefore, the flow resistance of the coolant and sludge flowing through the introduction pipe 17 can be reduced, and the coolant and sludge can be smoothly introduced into the processing container 12 from the filter device 11, and sludge clogging in the introduction pipe 17 is suppressed. be able to.

  Further, since the introduction pipe 17 (introduction pipe unit 40) can be attached to and detached from the cylinder device 22, maintenance and replacement of the introduction pipe 17 can be easily performed even if the introduction pipe 17 is disposed inside the cylinder device 22. Can do.

FIG. 7 is a cross-sectional view showing a modification of the processing container 12.
In the processing container 12 of the above embodiment, the entire inner peripheral surface 12a is formed in a tapered shape, but in this embodiment, only the lower side 12b (below the imaginary line L) is formed in a tapered shape. The side 12c (above the virtual line L) is formed along the vertical direction (vertical direction). Thus, if at least the lower side 12b of the processing container 12 is formed in a tapered shape, the discharge of the solidified sludge S can be promoted. In addition, it is preferable that the range formed in the tapered shape on the inner peripheral surface of the processing container 12 is a position higher than the upper limit of the height of the sludge S detected by the height sensor 44.

8 and 9 are schematic overall views of a liquid removal / solidification apparatus according to the second embodiment of the present invention.
In the liquid removal / solidification apparatus 10 of the present embodiment, a cylinder device that constitutes the opening / closing drive unit 22 and the extrusion drive unit 48 is disposed above the processing container 12, as in the first embodiment. However, an introduction chamber 60 for introducing coolant and sludge is provided between the processing vessel 12 and the cylinder devices 22 and 48, and the introduction pipe 17 is connected to the side wall of the introduction chamber 60. Further, the filter device 11 (see FIG. 9) is not disposed above the cylinder devices 22 and 48, but is disposed at a laterally separated position. The introduction pipe 17 is provided with an opening / closing valve 61 for switching whether or not coolant and sludge can be introduced.

  The cylinder devices 22 and 48 include a piston rod 63 protruding upward from the cylinder body 25, and a connecting member 64 disposed in the horizontal direction is attached to the upper end of the piston rod 63. The connection member 64 is connected to the upper ends of two support rods 65 arranged along the vertical direction. The lower end portion of each support rod 65 is connected to the lid body 21 that closes the lower end opening of the processing container 12.

  In the middle of the two support rods 65, a second connecting member 66 is provided. The upper end of a connecting rod 67 arranged along the vertical direction is connected to the second connecting member 66. A lower end of the connecting rod 67 is disposed in the processing container 12 and an extrusion member 47 is attached thereto. Similar to the first embodiment, the push-out member 47 constitutes push-out means 15 for pushing out the sludge adhering to the processing container 12 from the lower end opening. Further, the extrusion drive unit 48 of the extrusion unit 15 is also used as the opening / closing drive unit 22 (cylinder device) that opens and closes the lid 21.

The processing container 12 has an inner peripheral surface 12a that is tapered. Therefore, the sludge S accumulated on the filter body 23 when the lid 21 is opened can be easily separated from the inner peripheral surface.
The upper end opening of the processing container 12 is closed by a diffusion plate 69. The diffusion plate 69 has a large number of through holes through which coolant and sludge can pass. Therefore, the coolant and the sludge introduced into the introduction chamber 60 through the introduction pipe 17 are introduced into the processing container 12 while being diffused by the diffusion plate 69, and uniformly fall on the filter body 23 of the lid 21. The connecting rod 67 passes through the diffusion plate 69, and the extrusion member 47 is disposed below the diffusion plate 69.

  Also in this embodiment, since the sludge S solidified by the extruding member 47 can be pushed downward, the sludge S can be reliably discharged from the processing container 12.

The present invention is not limited to the above-described embodiment, and can be appropriately changed within the scope of the invention described in the claims.
For example, in the above embodiment, the height sensor 44 provided with the detector 44a made of a metal rod is provided, but the height sensor 44 made of an ultrasonic sensor or an optical sensor may be used. In this case, the height can be detected even if the sludge is not made of metal processing waste.

Further, the height sensor 44 may be omitted, and the height of the sludge accumulated on the filter body 23 may be indirectly detected based on the amount of coolant and sludge introduced from the filter device 11 or the number of introductions.
The liquid removal / solidification apparatus 10 pressurizes the coolant and sludge in the processing container 12 by introducing compressed air, and performs liquid removal / solidification. Solidification may be performed.

Further, the liquid removal / solidification apparatus 10 can be used not only for sludge generated from machine tools but also for sludge generated for other reasons.
The liquid removal / solidification apparatus 10 of the present invention may have a configuration in which the inner peripheral surface of the processing container 12 is not expanded downward. Even in this case, the sludge can be reliably discharged from the processing container 12 by the extrusion means 15.

  However, the configuration in which at least the lower side of the processing container 12 is expanded downward can be used to facilitate the discharge of the sludge S from the processing container 12 regardless of the presence or absence of the extrusion means 15.

10: Liquid removal / solidification device 11: Filter device 12: Processing vessel 12a: Inner peripheral surface (tapered surface)
12b: Inner peripheral surface (tapered surface) on the lower side
15: Extrusion means 16: Liquid removal / solidification means 17: Introduction pipe 21: Cover body 22: Opening / closing drive section 23: Filter body 47: Extrusion member 47a: Through hole 48: Extrusion drive section S: Sludge

Claims (10)

A treatment container having a discharge port at the lower end and into which a liquid containing sludge is introduced;
A lid for passing the liquid introduced into the processing vessel and depositing the sludge; and a lid for closing the discharge port;
An opening and closing drive unit for moving the lid to open and close the discharge port;
A liquid removal / solidification means for draining and solidifying sludge on the filter body;
An extrusion means for extruding the sludge solidified in the processing container from the discharge port ,
The extruding means moves the extruding member up and down between an extruding member that pushes the solidified sludge, a rising position located above the sludge, and a descending position that pushes the sludge downward. An extrusion drive unit,
The extruding drive unit is a sludge dewatering / solidifying device that moves the extruding member downward in conjunction with the opening of the lid .   The sludge dewatering / solidifying device according to claim 1, wherein at least a lower side of the inner surface of the processing container is expanded downward. The opening / closing drive unit is configured to close the discharge port by raising the lid and to open the discharge port by lowering, and also serves as the extrusion drive unit that moves the push member up and down. The sludge dewatering / solidifying device according to claim 1 or 2 . The extruding member is composed of a perforated plate in which a large number of through holes penetrating in the vertical direction are formed, and passes through the through holes while receiving and diffusing liquid containing sludge introduced into the processing container at the raised position. The sludge dewatering / solidifying device according to any one of claims 1 to 3 . A treatment container having a discharge port at the lower end and into which a liquid containing sludge is introduced;
A lid for passing the liquid introduced into the processing vessel and depositing the sludge; and a lid for closing the discharge port;
An opening and closing drive unit for moving the lid to open and close the discharge port;
A liquid removal / solidification means for draining and solidifying sludge on the filter body;
An extrusion means for extruding the sludge solidified in the processing container from the discharge port,
The opening and closing unit is disposed above the processing vessel, draining or solids apparatus sludge. An introduction pipe for introducing a liquid containing sludge from the upper part of the processing vessel;
The inlet tube, the are arranged in within range of the opening and closing drive unit, draining or solids apparatus sludge according to claim 5 when viewed in plan view. The sludge drainage according to claim 6 , wherein the opening / closing drive unit is configured by a cylindrical cylinder device having a vertical axis, and the introduction pipe is disposed in a central cylinder of the cylinder device. -Solidification equipment. The sludge drainage / solidification device according to claim 7 , wherein the introduction pipe is detachably attached to a central cylinder of the cylinder device. The sludge draining / solidifying device according to claim 7 or 8 , wherein an on-off valve for opening and closing the introduction pipe is disposed in a central cylinder of the cylinder device. The sludge according to any one of claims 1 to 9 , further comprising a filter device that removes sludge from the liquid above the processing container, wherein a liquid containing sludge is introduced into the processing container from the filter device. Liquid removal and solidification equipment.

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