CN117357956A - Roller type filtering device using band-shaped filtering material - Google Patents
Roller type filtering device using band-shaped filtering material Download PDFInfo
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- CN117357956A CN117357956A CN202310808760.4A CN202310808760A CN117357956A CN 117357956 A CN117357956 A CN 117357956A CN 202310808760 A CN202310808760 A CN 202310808760A CN 117357956 A CN117357956 A CN 117357956A
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- waste residue
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- 239000000463 material Substances 0.000 title claims abstract description 63
- 238000001914 filtration Methods 0.000 title claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 94
- 239000002699 waste material Substances 0.000 claims abstract description 55
- 230000002093 peripheral effect Effects 0.000 claims description 28
- 239000002893 slag Substances 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 6
- 230000000717 retained effect Effects 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 239000002826 coolant Substances 0.000 description 13
- 238000000926 separation method Methods 0.000 description 12
- 238000004140 cleaning Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/056—Construction of filtering bands or supporting belts, e.g. devices for centering, mounting or sealing the filtering bands or the supporting belts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
- B01D33/461—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element brushes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/44—Regenerating the filter material in the filter
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention provides a roller type filter device using a belt filter, which can reduce maintenance frequency of the belt filter and reduce environmental load caused by waste residue and waste of the belt filter. The slag-liquid removing and separating device (22) can use the strip-shaped filter material (46) for repeated filtration by advancing and retreating the strip-shaped filter material (46). Accordingly, the strip filter (46) having a long overall length can be used, and the filtration efficiency can be maintained, so that the frequency of maintenance of the strip filter (46) can be reduced. Further, since the waste residue (SG) and the belt filter material (46) are drained, the environmental load caused by discarding the waste residue (SG) and the belt filter material (46) can be reduced.
Description
Technical Field
The present invention relates to a roll type filter device using a belt filter which is provided with a belt filter continuously conveyed along the lower half circumference of a roll and which removes foreign substances contained in a used coolant (dirty liquid) by passing the coolant through the belt filter.
Background
The following drum-type filter device using a belt filter material has been proposed: in machining such as a grinder or a cutting machine used in manufacturing automobile parts, bearings, etc., a used dirty coolant (dirty liquid) used in machining or grinding is passed through a belt-like filter medium continuously fed along the lower half-cycle of a drum, whereby foreign matter is removed from the dirty liquid, and a clean liquid after cleaning is obtained and reused. For example, the drum type filter device using a belt filter described in fig. 1 to 9 of patent document 1 is just such.
The above-described roll type filter device using a belt filter includes a pair of circular members fixed to a rotatable horizontal support shaft at predetermined intervals, a filter material conveying device having an endless annular mesh belt along a lower half-circumference of the pair of circular members, and a belt filter material continuously conveyed in a state of being sandwiched between the mesh belt and each circular member, and the belt filter material is conveyed in a circumferential direction together with the pair of circular members and the mesh belt, and at the same time, a dirty liquid is caused to pass through the belt filter material, whereby a clean coolant (clean liquid) is obtained.
In the drum type filter device using the belt filter described in fig. 1 to 9 of patent document 1, the belt filter for filtering the dirty liquid is pulled out from a roll around which an unused belt filter is wound, and the filter is continuously conveyed in a state of being sandwiched between a mesh belt and each circular member, and then the used belt filter is recovered in a recovery tank. However, since the belt filter is disposable, there are problems in that the running cost of the drum type filter device is high and the environmental load is large due to discarding the used belt filter.
Prior art literature
Patent literature
Patent document 1: japanese patent laid-open No. 2001-314703
Disclosure of Invention
Problems to be solved by the invention
In contrast, in fig. 10 of patent document 1, a drum-type filter device using an endless (endless) belt filter material has been proposed, which can reduce the running cost of the drum-type filter device and reduce the environmental load caused by discarding the used belt filter material. The drum-type filter device is provided with a scraper and a brush roller for continuously scraping the filtered waste residue from the belt-like filter material.
However, since the waste residue on the belt filter contains a large amount of liquid components and is relatively soft, when the waste residue is scraped off from the belt filter by using a doctor blade or a brush roller, a part of the waste residue remains on the belt filter in a large amount, and therefore, when the belt filter moves in such a state and filters the coolant again, the filtration efficiency of the drum type filter device is lowered, and therefore, there arises a problem that the maintenance frequency of the belt filter is increased even in association with the short overall length of the belt filter, and a problem that the environmental load is large due to the waste residue containing a large amount of liquid components and the disposal of the endless belt filter.
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a roll filter device using a belt filter, which can reduce the maintenance frequency of the belt filter and reduce the environmental load caused by waste residue and disposal of the belt filter.
Means for solving the problems
As a result of repeated various studies on a drum-type filter device by the present inventors in the above circumstances, the following points have been found: when the waste residue attached to one surface of the belt filter is subjected to liquid removal by sandwiching the waste residue, the waste residue becomes a lump, and peeling of the waste residue from the belt filter is facilitated, whereby repeated filtration can be achieved by advancing and retracting the long belt filter. The present invention has been completed based on such an insight.
That is, the gist of the invention of (1) is (a) a roll type filter device using a belt filter, comprising: a drum in which a pair of circular members rotatably supported by a horizontal drum support shaft are coupled to each other via a coupling member having a predetermined length; a filter conveying device provided with an endless mesh belt extending over a half-circle along lower outer circumferences of the pair of circular members; an elongated belt-like filter medium conveyed by the filter conveying device in a state of being sandwiched between the mesh belt and the pair of circular members; and a slag-liquid removing and separating device that continuously separates the slag adhering to the outer peripheral surface of the belt-shaped filter medium sent from the filter conveying device from the belt-shaped filter medium, (b) when the sending amount of the belt-shaped filter medium reaches a preset and predetermined sending amount, the filter conveying device retreats the belt-shaped filter medium in the opposite direction and sends the belt-shaped filter medium again.
Effects of the invention
According to the drum type filtering device using the strip filter material of the present invention, the strip filter material can be used for repeated filtration by advancing and retreating the strip filter material. Accordingly, the strip filter having a long overall length can be used, and the filtration efficiency can be maintained, so that the frequency of maintenance of the strip filter can be reduced.
Here, preferably, the filter conveying device includes: a liquid level sensor that detects a liquid level of the dirty liquid retained on the belt-like filter medium in the drum; a conveying motor for conveying the belt-shaped filter material; and a motor control device for driving the conveying motor to convey the belt-shaped filter medium so that the liquid surface detected by the liquid surface sensor becomes a preset liquid surface height. Thus, the belt filter is conveyed little by little, and hence the consumption of the belt filter is suppressed.
In addition, it is preferable that the filter conveying device includes: a 1 st torque motor for applying a constant torque to the 1 st roll around which one end of the belt filter is wound, the constant torque being generated by the tension of the belt filter; and a 2 nd torque motor for applying a constant torque to the 2 nd roll wound around the other end of the belt filter so as to generate tension in the belt filter. Thus, the strip-shaped filter medium is conveyed from the filter conveying device to the waste residue liquid removing and separating device in a state where a certain tension is applied thereto. Thereby, the relaxation of the belt filter is suppressed.
Further, it is preferable that the filter conveyance device withdraws the belt-shaped filter material so that the portion of the belt-shaped filter material from which the slag is removed by the slag-removing and liquid-separating device is wound around the 1 st roll, and then, winds out (unwinds) the portion of the belt-shaped filter material wound around the 1 st roll from which the slag is removed by the slag-removing and liquid-separating device, and advances the portion again so as to be wound around the 2 nd roll via the slag-removing and liquid-separating device. As a result, the filter medium is used for a plurality of times for filtering the coolant, and therefore, the replacement cycle of the filter medium becomes longer, and the maintenance frequency of the filter medium can be reduced.
Further, the apparatus for separating the waste residue from the liquid preferably includes a nip roller for continuously nipping the waste residue deposited on one surface of the belt-like filter material fed from the filter conveyor. Accordingly, the waste residue is drained by the nip roller which continuously nips the waste residue deposited on the outer peripheral surface of the belt-like filter medium sent from the filter conveying device, and thus the peeling of the waste residue from the belt-like filter medium is facilitated. In addition, since the waste residue and the belt filter are drained by the nip roller, the environmental load due to the disposal of the waste residue and the belt filter is reduced.
Further, the apparatus for separating the liquid from the waste residue is preferably provided with a rotary brush which is provided downstream of the nip roller in the moving direction of the belt-shaped filter medium fed from the filter conveyor and separates the agglomerate-shaped waste residue adhering to the outer peripheral surface of the belt-shaped filter medium from the belt-shaped filter medium. Thus, the cake-shaped waste residue adhering to the outer peripheral surface of the belt-shaped filter medium after the liquid removal is separated by the rotary brush.
Further, the apparatus for separating the liquid from the waste residue is preferably provided with a jet nozzle which is provided downstream of the rotary brush in the moving direction of the belt-shaped filter material and separates the waste residue after the liquid removal attached to the outer peripheral surface of the belt-shaped filter material by jetting the fluid from the inner peripheral surface of the belt-shaped filter material. Thereby, the waste residue after the liquid removal attached to the outer peripheral surface of the belt-shaped filter material is separated from the belt-shaped filter material by the ejection of the fluid from the inner peripheral surface of the belt-shaped filter material by the ejection nozzle.
Further, the apparatus for separating the waste residue from the liquid preferably includes a guide roller for guiding the belt-like filter material fed from the filter conveyor in an acute angle direction by folding back the belt-like filter material, wherein the nip roller is provided at a position upstream of the guide roller, and wherein the rotary brush and the spray nozzle are provided at a position downstream of the guide roller. Thus, the waste residue adhering to the outer peripheral surface of the belt-shaped filter material is dewatered by the nip roller to form a cake before the belt-shaped filter material reaches the guide roller. Further, since cracks are formed in the waste residue by folding back of the belt-shaped filter material in the process of passing through the guide roller, the peeling efficiency of the waste residue from the belt-shaped filter material by the rotary brush and the spray nozzle is improved.
Drawings
Fig. 1 is a schematic diagram illustrating a structure of a drum type filtering device using a belt filter according to an embodiment of the present invention using a cross section thereof.
Fig. 2 is a schematic diagram illustrating a structure of a slag-liquid separator of a drum-type filtration apparatus using a belt filter according to another embodiment of the present invention, using a cross section thereof.
Description of the reference numerals
10: filter device (roller type filter device using belt filter material)
12: shell body
14: clean groove
18: waste residue container
22: waste residue liquid-removing and separating device
24: roll 1
26: roll 2
30: roller supporting shaft
32: round component
34: connecting member
36: roller
38: net belt
40: filter conveying device
42: driving roller
44a, 44b, 44c: driven roller
46: band-shaped filter material
48: liquid level sensor
50: motor control device
52: press roller
54. 56: guide roller
58: rotary brush
60: spray nozzle
64: cleaning liquid guiding inclined plate
SG: waste residue
TM1: no. 1 torque motor
TM2: 2 nd torque motor
CF: cleaning liquid
DF: dirty liquid
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following examples, the drawings are schematic drawings which are appropriately simplified or deformed, and the dimensional ratios, shapes, and the like of the respective parts are not necessarily accurately drawn.
[ example 1 ]
Fig. 1 is a side view of a drum-type filter device (hereinafter, referred to as a filter device) 10 using a belt-shaped filter medium according to an embodiment of the present invention, and is a schematic view showing a cross section when cut at a vertical plane passing through the center of the filter device 10 in the width direction. In fig. 1, the filter device 10 includes a housing 12 in a clean tank 14 in which clean liquid CF, which is a coolant after cleaning, is stored, and the housing 12 includes a front wall 12c, a rear wall 12d, a pair of side walls 12a and 12b connecting the front wall 12c and the rear wall 12d, an upper wall 12e closing an opening of a space surrounded by the front wall 12c, the rear wall 12d, and the pair of side walls 12a and 12b from the upper side, and a bottom wall 12f.
A notch 16 is formed in an end portion of the bottom wall 12f on the rear wall 12d side, and a slag storage container 18 that is opened upward and that stores the slag SG is disposed below the notch 16. A partition wall 12g for partitioning the interior of the casing 12 into a front space S1 for accommodating the drum 36, the filter conveyor 40, and the like, and a rear space S2 for accommodating the slag-removing liquid separator 22 is provided in the casing 12.
The filter device 10 includes a cylindrical drum support shaft 30 that is horizontally supported between a pair of side walls 12a and 12b so as to rotatably support a drum 36, a drum 36 in which a pair of circular members 32 rotatably supported by the drum support shaft 30 are coupled to each other in a state of being opposed to each other at a predetermined interval via a long coupling member 34 having a predetermined length, and a filter conveying device 40 including an endless annular mesh belt 38 that extends along the lower outer periphery of the pair of circular members 32 throughout the half-cycle. The rotation center line CL of the drum 36 is also the center line of the cylindrical drum support shaft 30.
In the front space S1 of the housing 12, a cylindrical 1 st roll 24 is rotatably supported by the side walls 12a and 12b, and one end of a belt filter material 46 having a predetermined width and functioning as a belt filter is wound around the 1 st roll 24. In the rear space S2 of the housing 12, a cylindrical 2 nd roll 26 is rotatably supported by the side walls 12a, 12b, and the other end portion of the belt filter 46 is wound around the 2 nd roll 26. The filter conveying device 40 includes a 1 st torque motor TM1 that imparts a constant torque to the 1 st roll 24 that causes tension to be generated by the belt filter 46, and a 2 nd torque motor TM2 that imparts a constant torque to the 2 nd roll 26 that causes tension to be generated by the belt filter 46. Accordingly, the long strip-shaped filter medium 46 is wound out from the 1 st roll 24 in a state where a constant tension is applied, and is wound from the filter conveyor 40 to the 2 nd roll 26 via the slag-liquid separator 22, whereby loosening is suppressed.
The filter conveying device 40 includes a driving roller 42 and 3 driven rollers 44a, 44b, 44c which are provided so as to surround the drum 36 and around which the endless belt 38 is wound, and a motor M which drives and rotates the driving roller 42, and rotates the endless belt 38 and the drum 36 when the driving roller 42 is driven and rotated. Thus, the belt filter material 46 wound from the 1 st roll 24 is sandwiched in a semicircular shape between the mesh belt 38 and the pair of circular members 32, and is then conveyed from the filter conveying device 40 toward the 2 nd roll 26 via the slag-liquid separating device 22. The strip-shaped belt filter 46 is a belt filter made of a filter material such as nonwoven fabric, woven fabric, or filter paper. The mesh belt 38 is a metal mesh having many meshes, a mesh made of synthetic fibers or carbon fibers, or a composite material.
The driven roller 44c of the 3 driven rollers 44a, 44b, 44c is located at a height equal to or greater than the driving roller 42, and the pair of driven rollers 44a, 44b is located at a height position such that the mesh belt 38 stretched between the pair of driven rollers 44a, 44b is located at a position spaced apart from the drum 36 by a predetermined distance downward, and is also located at a position spaced apart from the drum by a predetermined distance in the horizontal direction. The belt filter medium 46 fed from the filter feeding device 40 to the slag-liquid separating device 22 is wound around the 2 nd roll 26.
The cylindrical drum support shaft 30 allows the dirty liquid DF discharged from the grinding machine or polishing machine using the coolant to flow into the drum 36 onto the belt filter 46. Accordingly, the dirty liquid DF retained on the belt filter 46 in the drum 36 passes downward through the belt filter 46, and therefore, the waste residues SG are deposited on the outer peripheral surface of the belt filter 46.
The filter conveying device 40 includes a liquid surface sensor 48 provided on the drum support shaft 30 and detecting the liquid surface of the dirty liquid DF retained on the belt filter 46 in the drum 36, and a motor control device 50 controlling the rotation of the driving roller 42, and appropriately controls the conveying speed (advancing speed) of the belt filter 46 by adjusting the rotation speed of the driving roller 42 by the motor M so that the liquid surface detected by the liquid surface sensor 48 becomes a preset liquid surface height.
The filter conveying device 40 performs reciprocating driving of, when the amount of feed of the belt-shaped filter medium 46 to the slag-off and liquid-separating device 22 in the advancing direction reaches a preset predetermined amount of feed, retracting the belt-shaped filter medium 46 by a preset amount in the retracting direction in the opposite direction and feeding the belt-shaped filter medium 46 in the advancing direction again in the opposite direction, thereby using the belt-shaped filter medium 46 a plurality of times for filtering the coolant.
In the filter conveying device 40, when the belt filter 46 reaches a predetermined position, for example, a position where the winding remaining number of the belt filter 46 wound from the 1 st roll 24 becomes zero, the inflow of the dirty liquid DF from the drum support shaft 30 is stopped, and the belt filter 46 is retracted until the portion of the belt filter 46 from which the waste residue is removed by the waste residue-and-liquid separation device 22 is wound onto the 1 st roll 24, for example, until a position where the winding remaining number of the belt filter 46 of the 2 nd roll 26 becomes zero. Next, the filter conveying device 40, in a state in which the inflow of the dirty liquid DF from the drum support shaft 30 is restarted, winds out the portion of the belt-like filter material 46 wound around the 1 st roll 24 from which the reject is removed by the reject removal liquid separating device 22, and advances the portion again so as to wind it around the 2 nd roll 26 via the reject removal liquid separating device 22. The filter conveyor 40 repeats the advancing and retreating of the belt filter material 46. As a result, the belt filter 46 is used a plurality of times for filtering the coolant, and therefore, the replacement cycle of the belt filter 46 is prolonged, and the maintenance frequency of the belt filter 46 is reduced.
The slag-and-liquid separation device 22 includes, in the rear space S2, a pair of nip rollers 52 that continuously nip the slag SG deposited on the outer peripheral surface of the belt-shaped filter medium 46 fed in the substantially horizontal direction from the filter conveyor 40, a pair of guide rollers 54 and 56 that are positioned obliquely below the nip rollers 52 and vertically spaced apart by a predetermined interval, a rotary brush 58 that separates the lump-shaped slag SG deposited on the outer peripheral surface of the belt-shaped filter medium 46 positioned between the pair of guide rollers 54 and 56 from the outer peripheral surface of the belt-shaped filter medium 46 after the slag SG is separated by the nip rollers 52, and a jet nozzle 60 that separates the slag SG adhering to the outer peripheral surface of the belt-shaped filter medium 46 by jetting fluid such as air or coolant from the inner peripheral surface of the belt-shaped filter medium 46 at a position downstream of the rotary brush 58. The cleaning liquid CF which has fallen from the nip roller 52 through the belt filter 46 by the pinching of the slag SG on the outer peripheral surface of the belt filter 46 flows into the cleaning tank 14 via the cleaning liquid guiding inclined plate 64.
In order to nip the belt filter 46 between the pair of nip rollers 52, it is preferable that at least one of the pair of nip rollers 52 has an elastic member made of a material capable of elastically deforming in the radial direction, for example, an elastomer. Alternatively, a roller biasing mechanism is provided for biasing one bearing of the pair of nip rollers 52 toward the other bearing.
As described above, according to the filtering apparatus 10 of the present embodiment, the slag-and-liquid separation device 22 can use the strip filter 46 for repeated filtration by advancing and retracting the strip filter 46. Accordingly, the strip filter 46 having a long overall length can be used, and the filtration efficiency can be maintained, so that the frequency of maintenance of the strip filter 46 can be reduced.
The filter device 10 according to the present embodiment includes a liquid surface sensor 48 that detects the liquid surface of the dirty liquid DF that has remained on the belt filter 46 in the drum 36, a conveying motor M that conveys the belt filter 46, and a motor control device 50 that drives the conveying motor M so that the liquid surface of the dirty liquid DF detected by the liquid surface sensor becomes a preset liquid surface height to convey the belt filter 46. Accordingly, the belt filter 46 is conveyed more or less so as to maintain the liquid level of the retained dirty liquid DF, and therefore the belt filter 46 is conveyed more or less while maintaining the filtration efficiency of the belt filter 46 high.
In addition, according to the filter device 10 of the present embodiment, the filter conveying device 40 includes the 1 st torque motor TM1 that imparts a constant torque that causes tension to be generated in the belt-shaped filter 46 to the 1 st roll 24 wound around one end portion of the belt-shaped filter 46, and the 2 nd torque motor TM2 that imparts a constant torque that causes tension to be generated in the belt-shaped filter 46 to the 2 nd roll 26 wound around the other end portion of the belt-shaped filter 46. Thus, the strip-shaped filter medium 46 is conveyed from the filter conveyor 40 to the slag-and-liquid separation device 22 in a state where a constant tension is applied thereto. Thereby, the loosening of the belt filter 46 is suppressed.
Further, according to the filter device 10 of the present embodiment, the filter conveyance device 40 withdraws the belt-like filter material 46 so that the portion of the belt-like filter material 46 from which the slag SG is removed by the slag-removing liquid separation device 22 is wound around the 1 st roll 24, and then winds out the portion of the belt-like filter material 46 wound around the 1 st roll 24 from which the slag SG is removed by the slag-removing liquid separation device 22, and advances the portion so as to be wound around the 2 nd roll 26 via the slag-removing liquid separation device 22. As a result, the filter belt 46 is used a plurality of times for filtering the coolant, and therefore, the replacement cycle of the filter belt 46 is prolonged, and the maintenance frequency of the filter belt 46 can be reduced.
The slag-and-liquid separation device 22 of the present embodiment includes a nip roller 52 for continuously nipping the slag SG deposited on one surface of the belt-like filter material 46 fed from the filter conveyor 40. Accordingly, since the waste residues SG are drained by the nip rollers 52 which continuously nip the waste residues SG deposited on the outer peripheral surface of the belt filter material 46 fed from the filter conveyor 40, the peeling of the waste residues SG from the belt filter material 46 is facilitated, and the waste residues SG and the belt filter material 46 are drained, so that the environmental load due to the discarding of the waste residues SG and the belt filter material 46 can be reduced.
The slag-and-liquid separation device 22 of the present embodiment is provided with an electric rotating brush 58 that is provided downstream of the nip roller 52 in the direction of movement of the belt-shaped filter medium 46 fed from the filter conveyor 40 and separates the cake-shaped slag SG adhering to the outer peripheral surface of the belt-shaped filter medium 46 from the belt-shaped filter medium 46 after liquid removal. Accordingly, the agglomerate-like waste residue SG adhering to the outer peripheral surface of the belt filter 46 after the liquid removal is appropriately separated by the scratching of the burrs of the rotary brush 58.
The slag-and-liquid separation device 22 of the present embodiment is provided with an injection nozzle 60 which is provided downstream of the rotary brush 58 in the moving direction of the belt filter 46 and separates the slag SG adhering to the outer peripheral surface of the belt filter 46 after liquid removal by injection of the fluid from the inner peripheral surface of the belt filter 46. By this, the waste residue SG adhering to the outer peripheral surface of the belt filter 46 after the liquid removal is separated from the belt filter 46 by the ejection of the fluid from the inner peripheral surface of the belt filter 46 by the ejection nozzle 60.
In addition, according to the filter device 10 of the present embodiment, it is not necessary to provide a water guide pipe member on the lower side of the drum 36 for receiving the cleaning liquid CF after the dirty liquid DF retained on the belt filter 46 in the drum 36 passes through the belt filter 46 and passes downward. Thereby, the filter device 10 becomes compact.
In addition, according to the filter device 10 of the present embodiment, the slag storage container 18, which is opened upward, for receiving the slag SG falling from the belt-like filter medium 46 by the rotary brush 58 and the jet nozzles 60 is arranged below the slag-removing and liquid-separating device 22. Thereby, the slag SG separated from the belt filter 46 is collected into the slag storage container 18.
[ example 2 ]
Hereinafter, a slag-liquid separator 28 different from the slag-liquid separator 22 will be described with reference to the schematic diagram of fig. 2. In the following description, the same reference numerals are given to the portions common to the foregoing embodiments, and the description thereof is omitted.
Fig. 2 shows the essential parts of the slag-liquid separation device 28 of the present embodiment. In the process of winding the belt-shaped filter material 46 fed from the driving roller 42 of the filter conveying device 40 to the 2 nd roll 26 by the slag-and-liquid separator 28, a guide roller 80 having a relatively small diameter (for example, 30mm phi or less, preferably 20mm phi or less) for guiding the belt-shaped filter material 46 by folding back at an acute folding-back angle alpha is provided in the slag-and-liquid separator 28. In the moving direction of the belt filter 46, the nip roller 52 is provided at a position upstream of the guide roller 80, and the rotary brush 58 and the injection nozzle 60 are provided at a position downstream of the guide roller 80. The smaller the folding angle α, the larger the crack is generated in the slag SG, and therefore, it is preferably 60 ° or less, and more preferably 30 ° or less.
In the slag-and-liquid separation device 28 of the present embodiment, the slag SG adhering to the outer peripheral surface of the belt-shaped filter 46 is dewatered by the nip roller 52 into a lump before the belt-shaped filter 46 reaches the guide roller 80. Further, since cracks are generated in the slag by the sharp angle of the belt filter 46 passing through the guide roller 80, the peeling efficiency of the slag SG from the belt filter 46 by the rotary brush 58 and the jet nozzle 60 is improved.
Although one embodiment of the present invention has been described above with reference to the drawings, the present invention is applicable to other embodiments.
For example, the filter transport device 40 described above uses the belt filter 46 a plurality of times for filtering the coolant by reciprocally driving the belt filter 46, but the reciprocal driving stroke of the belt filter 46 may not necessarily be the entire length of the belt filter 46, and may be a part of the length direction of the belt filter 46.
In the above-described embodiment, the pair of nip rollers 52 for nipping the belt-shaped filter 46 to remove the liquid from the waste residue on the belt-shaped filter 46 is provided, but a plurality of pairs of nip rollers 52 may be provided.
In the above-described embodiment, the pair of circular members 32 are connected by the rod-shaped connecting member 34, but the circular members 32 may be circular members formed by connecting a plurality of radial members interposed between the hub and the annular member instead of being circular.
The above description is merely one embodiment, and the present invention can be implemented by various modifications and improvements based on the knowledge of those skilled in the art.
Claims (8)
1. A roll type filter device using a band-shaped filter medium, the roll type filter device comprising: a drum in which a pair of circular members rotatably supported by a horizontal drum support shaft are coupled to each other via a coupling member having a predetermined length; a filter conveying device provided with an endless mesh belt extending over a half-circle along lower outer circumferences of the pair of circular members; an elongated belt-like filter medium conveyed by the filter conveying device in a state of being sandwiched between the mesh belt and the pair of circular members; and a waste residue liquid removing and separating device for continuously separating the waste residue attached to the outer peripheral surface of the belt-shaped filter material sent from the filter conveying device from the belt-shaped filter material, characterized in that,
when the feeding amount of the belt-like filter medium reaches a preset predetermined feeding amount, the filter feeding device moves the belt-like filter medium backward in the opposite direction, and feeds the belt-like filter medium again.
2. A roll type filtering apparatus using a band filter according to claim 1, wherein,
the filter delivery device includes: a liquid level sensor that detects a liquid level of the dirty liquid retained on the belt-like filter medium in the drum; a conveying motor for conveying the belt-shaped filter material; and a motor control device for driving the conveying motor to convey the belt-shaped filter medium so that the liquid surface detected by the liquid surface sensor becomes a preset liquid surface height.
3. A roll type filtering apparatus using a band filter according to claim 1, wherein,
the filter delivery device includes: a 1 st torque motor for applying a constant torque to the 1 st roll around which one end of the belt filter is wound, the constant torque being generated by the tension of the belt filter; and a 2 nd torque motor for applying a constant torque to the 2 nd roll wound around the other end of the belt filter so as to generate tension in the belt filter.
4. A roll type filtering apparatus using a belt filter according to claim 3, wherein,
the filter conveyance device withdraws the belt-shaped filter material so that the portion of the belt-shaped filter material from which the slag is removed by the slag-removing liquid-separating device is wound around the 1 st roll, and then, withdraws the portion of the belt-shaped filter material wound around the 1 st roll from which the slag is removed by the slag-removing liquid-separating device, and advances the portion again so that the portion is wound around the 2 nd roll via the slag-removing liquid-separating device.
5. A roll type filtering apparatus using a band filter according to claim 1, wherein,
the apparatus for separating the liquid from the waste residue is provided with a nip roller for continuously nipping the waste residue deposited on one surface of the belt-shaped filter medium sent from the filter conveyor.
6. A roll type filtering apparatus using a band filter according to claim 5, wherein,
the apparatus for separating the liquid from the waste residue comprises a rotary brush which is provided downstream of the nip roller in the direction of movement of the belt-shaped filter medium fed from the filter conveyor and separates the agglomerate-shaped waste residue adhered to the outer peripheral surface of the belt-shaped filter medium from the belt-shaped filter medium.
7. A roll type filtering apparatus using a band filter according to claim 6, wherein,
the apparatus for separating the liquid from the waste residue is provided with a spray nozzle which is arranged at a position on the downstream side of the rotary brush in the moving direction of the belt-shaped filter material and separates the waste residue after the liquid removal attached to the outer peripheral surface of the belt-shaped filter material by spraying the fluid from the inner peripheral surface of the belt-shaped filter material.
8. A roll type filtering apparatus using a band filter according to claim 7, wherein,
the waste residue liquid removing and separating device is provided with a guide roller which folds back the belt-shaped filter material sent out from the filter conveying device and guides the belt-shaped filter material to an acute angle direction,
the nip roller is disposed at a position on the upstream side of the guide roller,
the rotary brush and the spray nozzle are disposed at a position on the downstream side of the guide roller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022110068A JP2024008308A (en) | 2022-07-07 | 2022-07-07 | Drum type filter device using belt shape filter medium |
| JP2022-110068 | 2022-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117357956A true CN117357956A (en) | 2024-01-09 |
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ID=89404754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310808760.4A Pending CN117357956A (en) | 2022-07-07 | 2023-07-04 | Roller type filtering device using band-shaped filtering material |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2024008308A (en) |
| CN (1) | CN117357956A (en) |
-
2022
- 2022-07-07 JP JP2022110068A patent/JP2024008308A/en active Pending
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2023
- 2023-07-04 CN CN202310808760.4A patent/CN117357956A/en active Pending
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| Publication number | Publication date |
|---|---|
| JP2024008308A (en) | 2024-01-19 |
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