JP5484528B2 - Filtration device - Google Patents

Description

  The present invention relates to a filtration device for continuously removing fried rice cake and the like in edible oil used in a fryer.

  In cooking oil used in commercial fryer, fried food cooking such as fried rice cake (dust) caused by cooking fried food and oil cake caused by alteration of cooking oil is generated. In the meantime, it is necessary to continuously filter these filter cakes through a filtering device.

  For example, Patent Document 1 shows such a filtering device. As shown in FIG. 8, the filtration device 100 is formed by stacking a thin belt-shaped filter medium 9 unwound from the filter medium roll 90 on a perforated plate section 114 formed on the bottom 112 side or the like of the filtration tank 110. The unfiltered oil F1 in the filtration tank 110 is filtered by sucking it toward the outlet 115 on the downstream side of the perforated plate portion 114. When a large amount of deposits adheres to the surface of the filter medium 9 on the perforated plate portion 114, the loop-shaped conveyor belt 120 on the inner surface of the rear wall 113 of the filtration tank 110 is driven to rotate. By the frictional action, the filter medium 9 is discharged to the outside of the rear side of the filtration tank 110, and accordingly, the filter medium 9 is unwound from the filter medium roll 90 on the upper side of the front wall 111 of the filter tank 110, The filter medium 9 on 114 is replaced with a new one.

  On the other hand, such a filtering device 100 often discharges the oil in the filtration tank 110 and cleans the inside after the operation for one day is completed. At that time, the filter medium 9 in the filtration tank 110 is used. Is separated from the filter media roll 90. For this reason, before starting the filtration device 100 the next day, it is necessary to unwind the filter medium 9 from the filter medium roll 90 and arrange (set) it on the inner surface side of the filter tank 110.

JP-A-1-155916

  The filter medium 9 is set in the filter tank 110 by moving the ends of the filter medium 9 into and out of the guide rolls 121 and 122 and passing through the perforated plate section 114 on the bottom 112 side to the lower part of the conveying belt 120. After fully inserting between the side and the inner surface of the rear wall 113 of the filtration tank 110, the conveyor belt 120 is rotated to move the end of the filter medium 9 to the outside of the rear wall 113 of the filtration tank 110. It is necessary to let In this case, since there is also a coarse soot removing device 130 for removing large impurities in the oil in the filter tank 110, the filter medium 9 must be set while avoiding the coarse soot removing device 130.

  Therefore, even when there is no oil in the filter tank 110, the operation of setting the filter medium 9 in the filter tank 110 is not easy, and particularly when there is oil in the filter tank 110, the filter medium 9 into the filter tank 110 is not easily supplied. There was a problem that setting was very difficult. Therefore, in such a filtering apparatus 100, when the filter medium 9 runs out during operation, there is a problem that it takes a lot of time to set the filter medium 9 such as discharging the oil in the filter tank 110. It was.

  In view of the above points, the present invention sets the filter medium unwound from the filter medium roll on the inner surface side of the filter tank, and filters the unfiltered oil in the filter tank. It aims at providing the filtration apparatus which can be easily set to an inner surface side.

  The invention of the filtration device according to claim 1 of the present invention is unwound from the filter medium roll placed above the front side of the filtration tank, and is discharged outwardly through the inner surface side of the filtration tank. A thin belt-shaped filter medium is superposed on the perforated plate portion formed at least on the bottom side of the filtration tank, and the unfiltered oil in the filter tank is filtered by sucking it to the downstream side of the perforated plate portion. In the filtration device, a predetermined pitch is arranged so as to face a pair of loop-shaped transfer portions that are arranged facing each other and a part of the rotational movement route passes near the left and right ends of the filter medium in the filtration tank, and the pair of transfer portions. The filter medium is sandwiched between the right and left ends of the filter medium and the filter medium is positioned in the filter tank, and the filter medium discharge side and the filter medium are moved along with the rotational movement of the transfer section. Roll it and move it to the holding scissors it Is engaged, characterized in that it has a filter medium transfer means and the cam member is provided to open against the holding shears the resilient force.

  In this invention, the thin belt-shaped filter medium unwound from the filter medium roll passes from the front side inner surface of the filtration tank to the bottom side upper surface of the filtration tank, that is, the perforated plate portion and the rear side inner surface. In this case, the positioning of the filter medium is carried out by holding a plurality of pairs sandwiching both ends of the filter medium. It is made by scissors. Then, by sucking the unfiltered oil in the filtration tank to the downstream side of the perforated plate portion, the unfiltered oil is filtered through the filter medium and the perforated plate portion.

  On the other hand, when many deposits adhere to the surface of the filter medium on the perforated plate part, the pair of transfer parts of the filter medium transfer means are rotated and the pinching shears are moved along the rotation movement route of the transfer part. As a result, when the filter medium is sandwiched by the elastic force, the sandwiching scissors approaching the discharge side of the filter medium become unsealed at the position of one of the cam members and from the filter medium. The gripping scissors approaching the filter medium roll side in the state of being separated by the elastic force while being separated are unwound from the filter medium roll in a state where the gripping scissors are opened at the position of the other cam member. By moving to a new filter medium side and then closing by elastic force, the filter medium is sandwiched and moved. Therefore, a new filter medium is unwound from the filter medium roll by the rotational movement of the pair of transfer units, and the used filter medium to which the deposits are attached is discharged to the outside of the filter tank.

  In addition, when the transfer part of the filter medium transfer means is rotated and moved in a state where the filter medium is slightly unwound from the filter medium roll, the sandwiching scissors approaching the filter medium roll side move sequentially while sandwiching the filter medium. Is unwound from the filter roll. Then, the filter medium from the filter medium roll is set on the inner surface side of the filter tank along the rotational movement route of the transfer section, but when the end portion approaches the filter medium discharge side, the holding medium that sandwiched this filter medium is held. Since the scissors open and move away from the filter medium, the filter medium is set at a predetermined position in the filtration tank if the transfer medium is stopped while the filter medium is slightly discharged to the discharge side. Is done.

  According to a second aspect of the present invention, in the case of the first aspect, the inclined inner surface of the rear side of the filtration tank so that the perforated plate portion of the filtration tank follows the one on the bottom side. A plurality of friction rollers that are also formed on the side and that slightly protrude from the upper surface of the perforated plate portion of the filtration tank are rotated in synchronization with the rotational movement of the transfer portion of the filter medium transfer means. By doing so, it has an auxiliary transfer means for moving the filter medium on the perforated plate portion so as to assist the filter medium transfer means.

  In the present invention, a plurality of friction rollers slightly projecting from the perforated plate portion to the filter medium side are rotated in synchronization with the rotational movement of the transfer section of the filter medium transfer means, so that the bottom side and the rear side of the filter tank are rotated. Since the filter medium on the perforated plate portion arranged on the inclined inner surface side of not only the left and right end portions are moved by the sandwiching scissors, but also the center portion in the width direction is moved by the friction roller, As a whole, the filter medium moves smoothly in the filter tank.

  According to a third aspect of the present invention, in the case of the second aspect of the present invention, a first stop valve that is closed upon unwinding of the filter medium is provided in the suction line on the downstream side of the perforated plate portion, and The bypass line connecting the suction line at the outlet of the first stop valve and the unfiltered oil side of the filtration tank is provided with a second stop valve that is opened when the filter medium is unwound.

  In this invention, even when the first stop valve is closed and the second stop valve is opened when the filter medium is transferred, the filter medium adsorbing force slightly remains on the porous plate portion side. It can be transferred in a slightly adsorbed state.

  According to the first aspect of the present invention, when the filter medium unwound from the filter medium roll is set on the inner surface side of the filter tank and the unfiltered oil in the filter tank is filtered, this filter medium is used. Can be easily set on the inner surface side of the filtration tank.

  According to the second aspect of the present invention, the filter medium can be transported even if the filter medium is adsorbed to some extent on the perforated plate portion side. The filter medium can be transferred without diffusing the deposits on the filter medium.

  According to the invention of claim 3 of the present invention, since the filter medium is slightly adsorbed on the perforated plate portion side when transferring the filter medium, the deposit on the filter medium is not diffused in the filter tank. Filter media can be transferred.

It is a front sectional view of the filtration device concerning one embodiment of this invention. It is a sectional side view of the filtration apparatus shown by FIG. It is an enlarged view around the discharge position of the filter medium of the filtration device. It is an enlarged view of the lower part side of FIG. It is a figure which shows the external appearance of a pinching shears. It is a figure explaining the situation where a pinching scissors pinches the filter medium in the vicinity of the unwinding position of the filter medium, (a) shows a state where the pinch scissors are above the filter medium and the cam member, ) Shows a state in which the sandwiching scissors are engaged with the cam member and opened, and a part of the sandwiching scissors hits the filter medium, and (c) hits the filter medium and turns to the lower side of the filter medium. Part of the pinching shears is disengaged from the cam member and moved to the original position, and the pinching shears sandwich the filter medium, and (d) shows (a) It is a DD arrow view of (b), (e) is an EE arrow view of (b). It is a figure explaining the arrangement | positioning condition of the apparatus around a filtration apparatus. It is explanatory drawing of a prior art.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows a front sectional view of a filtration device according to an embodiment of the present invention, FIG. 2 shows a side sectional view of the filtration device, and FIG. 7 shows the state of equipment around the filtration device. .

  As shown in FIG. 7, the filtering device A receives cooking oil from the fryer B (hereinafter referred to as crude oil-containing oil F0 when cooking) through the discharge line C, and in the crude oil-containing oil F0. The coarsely crushed rice cake, which is a slightly larger fried rice cake, is removed to make the unfiltered oil F1, and the small fried rice cake, oil cake, etc. in the unfiltered oil F1 are filtered, and the unfiltered oil F1 is filtered. It is what. Then, the filtered oil F2 from the filtering device A reaches the suction pump P through the suction line 7 provided with the first electric valve 71 in the pipe, and the suction pump P provided with the heat exchanger E. The discharge line D is returned to the fryer B. The unfiltered oil F1 side in the filtration device A and the outlet side of the first electric valve 71 of the suction line 7 are connected by a bypass line 8 in which a second electric valve 81 is provided in the pipe. .

  As shown in FIG. 1, the filtration device A includes a filtration tank 1, a filter material transfer device 2 that is a filter material transfer device, a friction roller device 4 that is a first auxiliary transfer device for the filter material 9, and a first filter material 9. Belt transporter 5 as auxiliary transfer means 2, a coarse wrinkle removal device 6 that changes the coarse oil content F 0 to unfiltered oil F 1, and a suction line 7 in which a first electric valve 71 is provided in a pipe 70. A part, a bypass line 8 in which a second electric valve 81 is provided in the pipe 80, and a filter medium 9 are configured. The filter medium 9 is thin (for example, 0.2 mm thick) and is formed of a strip-shaped nonwoven fabric. For example, a filter medium roll 90 having a thickness of about 100 m is wound around it.

  The filtration tank 1 is for temporarily storing and processing the crude oil-containing oil F0 and the unfiltered oil F1, and as shown in FIG. 1, the right front wall portion 10 and the lower bottom wall As shown in FIG. 2, the left and right ends of the concave portion formed by the portion 11 and the left rear wall portion 12 are formed so as to be surrounded by the left wall portion 13 and the right wall portion 14. A header portion 15 for collecting filtered oil F2 is formed below the bottom wall portion 11 side, and a roll setting portion 16 for the filter media roll 90 around which the filter media 9 is unwound is formed on the upper end side of the front wall 10. It is. As shown in FIG. 2, a pipe 80 of the bypass line 8 is connected to the left wall portion 13, and an inlet nozzle 19 connected to the discharge line C is provided on the right wall portion 14.

  The front wall 10 is formed such that the upper part 10a is formed vertically and the lower part 10b is inclined slightly inward from the vertical, and the bottom wall part 11 is slightly inclined from the horizontal with the left end side slightly raised. It is formed in a state. Further, the rear wall portion 12 is formed in an inclined state of about 45 degrees with the upper end side moved rearward. An opening K through which filtered oil F2 is taken out is formed in the bottom wall portion 11 and the lower end portion of the rear wall portion 12, and the bottom wall portion 11 and the rear wall portion 12 are formed so that the header portion 15 covers the opening K. Is attached. A hand hole covered with a cover 15 a is formed on the rear end side of the header portion 15, and the front end side of the header portion 15 is connected to the suction line 7.

  Further, in the filtration tank 1, as shown in FIG. 2, a box-shaped step portion 17 which is raised by one step at the center portion in the left-right direction on the inner surface side of the front wall portion 10, the bottom wall portion 11, and the rear wall portion 12. Of the upper surface portion 17a of the box-shaped step portion 17, a portion parallel to the bottom wall portion 11 and the rear wall portion 12 is a punching plate having a large number of small holes (for example, a hole having a diameter of 3 mm is 5 mm). The perforated plate portion 18 is formed from a plate formed at a staggered pitch. On the perforated plate portion 18, the filter medium 9 is applied so as to overlap, and the unfiltered oil F1 is filtered. The front end of the box-shaped step portion 17 starts from a position slightly lowered from the upper end of the front wall portion 10, but the rear end extends to the horizontal portion 12 a on the upper end side of the rear wall portion 12. The internal space V3 on the porous plate portion 18 side of the box-shaped step portion 17 forms a passage for collecting the filtered oil F2 that has passed through the filter medium 9 and the porous plate portion 18 to the header portion 15 side. In FIG. 1, the filter medium 9 and the upper surface portion 17 a (perforated plate portion 18) of the box-shaped step portion 17 are separated from each other, but this is for making the drawing easier to see.

  The filter medium transfer device 2 grips the filter medium 9 so as to sandwich the left and right ends thereof, and transfers the filter medium 9 through a predetermined route. As shown in FIGS. A pair of left and right loop-shaped transfer units 20 and 20 that are arranged facing the left and right ends of the inside of the tank 1 and a drive sprocket shaft 21 that rotates and moves the transfer units 20 and 20 so as to pass a predetermined route. And a plurality of pairs of driven sprocket shafts 22A, 22B,..., And a pair of transfer units 20, 20, are attached at a predetermined pitch and sandwiched between the left and right ends of the filter medium 9. 23, a connecting bar 24 that connects the left and right transfer units 20 and 20 at a predetermined pitch, a pair of support members 25 and 25 that guide and support the upper side of the transfer units 20 and 20, and a position close to the filter medium roll 90 (hereinafter referred to as the filter medium roll 90) , Unwinding An inlet guide 26 that guides the filter medium 9 at a position a), a discharge guide 27 that guides the filter medium 9 at a position where the filter medium 9 is discharged from the filtration tank 1 (hereinafter referred to as a discharge position b), and immediately after unwinding of the filter medium 9 The filter medium 9 is detected by the cam members 28 and 29 for opening and closing the holding scissors, the position just after unwinding of the filter medium 9, and the discharge position B. The filter medium detectors 30 and 31 and a drive source 32 that drives the drive sprocket shaft 21 to rotate and also drives the friction roller device 4 and the belt conveyor 5 at the same time.

  The transfer parts 20 and 20 are formed of a bendable chain member, and as shown in FIG. 1, the lower side of the transfer sprocket shafts 22A, 22B, 22C, 22D, and 22E is a box-like step of the filtration tank 1. It is positioned so as to be arranged in the vicinity of the upper surface portion 17a (perforated plate portion 18) of the portion 17, and the upper side is above the filtration tank 1 by the drive sprocket shaft 21 and the driven sprocket shafts 22A, 22E, 22F, 22G. It is positioned so that it may be arranged. In particular, at the discharge position B of the filter medium 9, after the transfer sections 20 and 20 are horizontally positioned by the driven sprocket shaft 22A and the drive sprocket shaft 21, the transfer sections 20 and 20 are moved by the drive sprocket shaft 21 and the driven sprocket shaft 22G. Positioning is made so as to be directed almost in the opposite direction, so that the holding scissors 23 can be easily separated from the filter medium 9. Further, as shown in FIG. 2 and FIG. 4, the lower side of the transfer parts 20, 20 is outside of the left and right ends of the filter medium 9, and the sandwiching scissors 23 do not interfere with the box-shaped step part 17. It is arranged outside the box-shaped step 17. The drive sprocket shaft 21 and the driven sprocket shafts 22A, 22B,... Are obtained by attaching the sprockets for the transfer units 20 and 20 and the rotational drive to the shaft members. It is rotatably supported by the right wall portion 14 or a support member therefrom.

  As shown in FIG. 5, the sandwiching scissors 23 has a substantially rectangular shape, and a protrusion 230 c is formed between the left portion 230 a and the right tooth portion 230 b on which a plurality of teeth T are formed. A board member 230, a sandwiching member 231 having a (<) shape, an operation part 231a on the left side and a pressing part 231b on the right side, a support pin 232, and a left part 230a of the board member 230 on one end side. The curved guide pin 233, the other end side of which is inserted into the long hole L1 formed in the operation portion 231a of the sandwiching member 231, the coiled compression spring 234 into which the curved guide pin 233 is inserted, and the one end side thereof The connecting member 235 is attached to the transfer unit 20 and the other end is attached to the substrate member 230.

  In the sandwiching scissors 23, the intermediate portion 231 c of the pinching member 231 is rotatably supported by the protrusion 230 c of the substrate member 230 via the support pins 231, but the compression spring 234 around the curved guide pin 233 is supported. However, in order to pressurize the operation portion 231 a of the sandwiching member 231 via the left portion 230 a of the substrate member 230, the sandwiching member 231 rotates around the support pin 232, and the pressurizing portion 231 b is engaged with the teeth of the substrate member 230. The part 230b side is pressurized. In other words, the sandwiching scissors 23 are always closed by the pressing force 231b of the pinching member 231 pressing the teeth 230b side of the substrate member 230 by the elastic force of the compression spring 234. When the cam members 27 and 28 come into contact with and engage with the operation portion 231a of the pinching member 231, the pinching member 231 moves the pressing portion 231b away from the substrate member 230 against the elastic force of the compression spring 234. Since it rotates, it is in an open state. In addition, the code | symbol L2 in the figure is an opening by the side of the clamping member 231 which accommodates the tooth | gear part 230b of the board | substrate member 230. FIG.

  As shown in FIG. 2, the connecting bar 24 connects the left and right transfer units 20, 20, thereby connecting the substrate members 230 of the pair of sandwiching scissors 23 facing each other. A concave portion 24 a for avoiding interference with the discharge guide 27 is formed in the central portion of the connecting bar 24. As shown in FIG. 1, the support member 25 guides and supports the upper side of the transfer units 20 and 20 above the filtration tank 1 in a horizontal state.

  As shown in FIG. 1, the inlet guide 26 guides the filter medium 9 unwound from the filter medium roll 90 downward so as to be close to the transfer units 20, 20, and holds the filter medium 9 with the sandwiching scissors 23. It is something that can be pinched. On both the left and right sides of the lower side of the inlet guide 26, as shown in FIG.

  The discharge guide 27 prevents the filter medium 9 from adhering to the sandwiching scissors 23 when the sandwiching scissors 23 sandwiching the filter medium 9 are separated from the filter medium 9, and The filter medium 9 is guided downward so that it can freely fall. As shown in FIG. 3, the central portion on the upper end side of the discharge guide 27 is close to the transfer unit 20 side and prevents the filter medium 9 from being accompanied with the pinching scissors 23 as much as possible. Since the portion is located on the concave portion 24 a side of the connection bar 24, it does not interfere with the connection bar 24.

  The filter medium detectors 30 and 31 detect the filter medium 9 by applying infrared rays to the filter medium 9 and detecting reflected light. As shown in FIG. 1, the filter medium detector 30 is attached to the upper end side of the front wall 10 of the filter tank 1, detects the unwinding of the filter medium 9 from the filter medium roll 90, and filters the filter medium from the filter medium roll 90. 9 is used up. Moreover, the filter medium detector 31 is attached to the upper end side of the rear wall part 12, and detects that the filter medium 9 exists in the filtration tank 1 (it is set).

  The cam member 28 engages with the holding scissors 23 moved to the position a side immediately after unwinding of the filter medium 9 as the transfer portion 20 rotates, and this gripping scissors 23 opposes the elastic force. Then, the new filter medium 9 unwound from the filter medium roll 90 is sandwiched between the holding scissors 23. The transfer unit 20 in the vicinity of the cam member 28 is provided with a cover plate for preventing the transfer unit 20 from being deformed when the holding pin 23 is engaged with the cam member 28 and opened.

  FIG. 6 illustrates a situation in which the sandwiching scissors 23 sandwich the filter medium 9 unwound from the filter medium roll 90 immediately after unwinding. In FIG. 6A, the sandwiching scissors 23 are above the inlet guide 26 and the cam member 28, and the sandwiching scissors 23 are closed by the elastic force of the compression spring 234. In this case, the upper and lower positional relationship between the holding pin 23 and the cam member 28 is shown in FIG. In FIG. 6 (b), the pinching scissors 23 are lowered, and the vertical surface portion 28a of the cam member 28 is engaged with the operation portion 231a of the pinching member 231, as shown in FIG. 6 (e). ing. In this state, the pinching member 231 is rotated against the elastic force of the compression spring 234, and the holding pin 23 is open. In this state, when the sandwiching scissors 23 are further lowered, the pressure portion 231b of the sandwiching scissors 23 hits the filter medium 9 on the side of the notch 26a of the inlet guide 26, and the elasticity of the end of the filter medium 9 is reached. Due to the deformation, the pressurizing part 231 b goes around to the lower side of the filter medium 9, and the filter medium 9 can be sandwiched between the holding scissors 23. In FIG. 6C, the sandwiching scissors 23 are further lowered and separated from the cam member 28, and the sandwiching scissors 23 sandwich the filter medium 9 by the elastic force of the compression spring 234. Is shown.

  The cam member 29 engages with the sandwiching scissors 23 that sandwich the filter medium 9 and move to the discharge position B side as the transfer unit 20 rotates, and the sandwiching scissors 23 are made elastic. On the contrary, it is opened so that it is separated from the filter medium 9. The transfer unit 20 in the vicinity of the cam member 29 is provided with a cover plate that prevents the transfer unit 20 from being deformed when the pinching scissors 23 are engaged with the cam member 29 and opened.

  FIG. 3 shows the shape of the cam member 29. This cam member 29 has an upward inclined surface portion 29a and a horizontal surface portion 29b following this from the vicinity of the drive sprocket shaft 21 to the rear side, and a distance from the transfer portion 20 around the driven sprocket shaft 22G. It has a curved surface portion 29c equal to the horizontal surface portion 29b.

  When the sandwiching scissors 23 sandwiching the filter medium 9 are moved to the position of the upward inclined surface portion 29a of the cam member 29, the operation portion 231a engages with the upward inclined surface portion 29a, It will be open. And the sandwiching scissors 23 is in a sufficiently open state near the position where the upward inclined surface portion 29a ends, and the pressurizing portion 231b hits the end of the filter medium 9 moving obliquely downward, The filter medium 9 is elastically deformed and moved to the upper side of the filter medium 9. The sandwiching scissors 23 are moved while the operating portion 231a is engaged with the horizontal surface portion 29b and the curved surface portion 29c of the cam member 29, and when the cam member 29 disappears, the compression spring 234 Closed state. Even if the filter medium 9 tries to move in a state where it adheres to the pressurizing portion 231b of the sandwiching shears 23, the filter medium 9 hits the discharge guide 27 and is separated from the sandwiching shears 23 and falls down by its own weight. To do.

  The friction roller device 4 rotates a plurality of friction rollers 40 slightly projecting from the upper surface of the perforated plate portion 18 of the filtration tank 1 in synchronization with the rotational movement of the transfer portion 20 of the filter material transfer device 2. The filter medium 9 on the perforated plate portion 18 is moved so as to assist 2. As shown in FIG. 4, the friction roller device 4 supports the left and right friction rollers 40 and the sprocket 41 at a predetermined position of the horizontal shaft portion 42, and both end portions of the shaft portion 42 are box-shaped stepped. As shown in FIG. 1, four roller shaft members 43 supported by the left and right upright plates 17b and 17b of the portion 17 are provided on the bottom wall portion 11 side of the filtration tank 1 and eleven on the rear wall portion 12 side. It has been. The friction roller device 4 includes a sprocket drive shaft 44 and a sprocket driven shaft 45 that are supported in the same manner as the roller shaft member 43, the upper end side of the rear wall portion 12, the bottom wall portion 11, and the rear wall portion 12. The roller shaft member 43, the sprocket drive shaft 44, and the sprocket driven shaft 45 are rotationally driven by chains 46, 47, etc., as shown in FIG.

  The friction roller 40 is provided at a position slightly protruding from the upper surface of the perforated plate portion 18 of the filtration tank 1, and the outer peripheral surface of the friction roller 40 is knurled to increase the frictional resistance to the filter medium 9. It has been subjected. Since the sprocket drive shaft 44 is rotationally driven by the drive source 32 of the filter medium transfer device 2, the friction roller 40 is driven in synchronization with the transfer unit 20 of the filter medium transfer device 2. In this case, the frictional force applied to the filter medium 9 by the friction roller 40 is applied so as to transfer the filter medium 9 at the same speed as the transfer section 20 in the same direction as the rotational movement direction of the transfer section 20.

  The belt conveyor 5 is for discharging the filter medium 9 on the upper end side of the rear wall portion 12 of the filter tank 1, which is not provided with the friction roller device 4, together with the filter medium transfer apparatus 2 from the filter tank 1 side. is there. As shown in FIG. 3, the belt conveyor 5 includes a drive shaft 51 provided with a large number of pulleys 50 in the axial direction, and a plurality of pulleys 50 in the axial direction corresponding to the pulleys 50 of the drive shaft 51. A driven shaft 52 provided, and a plurality of belts 53 wound around the pulley 50 of the drive shaft 51 and the driven shaft 52 are provided. Since the drive shaft 51 is rotationally driven by the drive source 32 of the filter medium transfer device 2, the pulley 50 and the belt 53 are driven in synchronization with the transfer units 20 and 20 of the filter medium transfer device 2. In this case, the conveying force of the filter medium 9 by the pulley 50 and the belt 53 is applied so as to transfer the filter medium 9 at the same speed as that of the transfer sections 20 and 20 in the same direction as the rotational movement direction of the transfer sections 20 and 20. . The filter medium 9 drops and moves downward so as to be in contact with the outer surface of the pulley 50 of the driven shaft 52.

  The coarse soot removing device 6 is for removing the coarse soot from the coarse soot-containing oil F0 to make the coarse soot-containing oil F0 into the unfiltered oil F1, and is disposed in the filtration tank 1. As shown in FIG. 1 and FIG. 2, the rough flaw removing device 6 is supported in a slanted manner on a pair of front and rear side plates 60, 60 having a substantially triangular shape and a lower side between the side plates 60, 60. A thick plate-like screen 61, a bottom plate 62 provided so as to connect the lower end side of the screen 61, the right wall 14 of the filtration tank 1 and the side plates 60, 60, and a part of the upper side of the side plates 60, 60 are connected. An upper plate 63 that is provided above the screen 61, and a rough scooping machine 64 that scoops up the rough crust on the screen 61 upward along the screen 61.

  As shown in FIG. 2, the left side upper part of the side plates 60, 60 protrudes outward from the left wall 13 of the filtration tank 1, and a part of the left wall 13 between the side plates 60, 60 is cut. After being cut out, it is bent outward and positioned so that the upper portion of the screen 61 faces this portion. A coarse outlet Y is formed on the upper left side of the screen 61. Here, in the space V1 surrounded by the side plates 60, 60, the screen 61, the bottom plate 62, and the right wall portion 14 of the filtration tank 1 in the filtration tank 1, that is, in the space V1 in the rough scum removal device 6, The soot-containing oil F0 is stored, and the unfiltered oil F1 is stored in the unfiltered oil space V2 adjacent to the space V1 in the filtration tank 1. The inlet nozzle 19 is attached to the right wall portion 14 so as to face the space V1.

  The screen 61 is formed by arranging a plurality of wedge wires having a substantially triangular cross section in the front-rear direction so as to leave a gap of 1.5 mm, for example. Left over.

  As shown in FIG. 2, the rough scooping machine 64 has a pair of endless chains 65 and 65 spanning three sprocket shafts 66A, 66B and 66C supported by the side plates 60 and 60. A scraping plate 67 that slides on the screen 61 and the bottom plate 62 at a predetermined pitch is attached to 65 and 65. The sprocket shaft 66A is rotationally driven by a drive source 68.

Next, the operation and effect of the filtering device A will be described.
First, the first electric valve 71 is closed, the second electric valve 81 is opened, the suction pump P is operated, and the cooking oil from the fryer B (filtered oil F2 before the fryer B operation) is put into the filtration tank 1. After taking in, this filtered oil F2 is circulated to the fryer B through the bypass line 8 through the suction pump P and the heat exchanger E, and its temperature is raised.

  Next, when the filter medium roll 90 is attached to the roll setting unit 16 and the tip of the filter medium 9 is moved to the position of the filter medium detector 30 through the inlet guide 26, the filter medium detector 30 detects the filter medium 9. . Thereafter, the drive source 32 is operated, and the filter medium transfer device 2, the friction roller device 4, and the belt conveyor 5 are operated. The pair of sandwiching scissors 23 and 23 that have reached the position a immediately after unwinding of the filter medium 9 by the operation of the filter medium transfer device 2 sandwich the both ends of the filter medium 9 at a position slightly above the filter medium detector 30. Since it descends, a new filter medium 9 is unwound from the filter medium roll 90. And, by the rotational movement of the transfer parts 20, 20, new sandwiching scissors 23, 23 are sequentially moved by sandwiching the filter medium 9, so that the tip of the filter medium 9 is the upper surface part of the box-shaped step part 17. 17a, and reaches the bottom wall 11 side through the front wall portion 10 of the filtration tank 1, but from here it moves with the help of the rotation of the friction roller 40 of the friction roller device 4, and moves to the rear wall portion. After 12, it reaches near the discharge position b of the filter medium 9.

  At the discharge position b, the holding scissors 23 and 23 are opened and moved away from the filter medium 9, and the tip of the filter medium 9 moves with the help of the belt conveyor 5, and is moved to the discharge guide 27. It is guided, moves downward (drops), and is discharged from the filtration tank 1. And if the filter medium detector 31 detects the filter medium 9, the drive source 32 will be stopped and operation | movement of the filter medium transfer apparatus 2 grade will be stopped. In this state, the filter medium 9 is set in the filter tank 1 and is in a state where the edible oil in the filter tank 1 can be filtered. In this state, since the filter medium 9 is not adsorbed to the perforated plate portion 18 side at all, the filter medium 9 can be set in the filter tank 1 without the assistance of the friction roller device 4 or the belt conveyor 5. it is conceivable that.

  Next, when fried food work is started on the fryer B side, the filtered oil F2 in the fryer B produces coarse straw, small fried straw, oil soot, and the like, and becomes crude straw-containing oil F0. For this reason, the second motor-operated valve 81 is closed to stop the suction of oil from the bypass line 8, and the first motor-operated valve 71 is opened so that the oil in the filter tank 1 is passed through the filter medium 9, the porous plate portion 17, The suction pump P is sucked to the suction line 7 side through the header portion 15.

  Then, when the coarse soot oil F0 from the fryer B is received into the space V1 on the coarse soot removal device 6 side in the filtration tank 1 through the inlet nozzle 19, the coarse soot in the coarse soot oil F0 is coarse. Although it is obstructed by the screen 61 of the soot removing device 6 and remains on the upper surface side of the screen 61, the small fried soot and oil soot, together with the oil, pass through the screen 61 to become unfiltered oil F1, It moves into the unfiltered oil space V2. The coarse cake on the screen 61 is pushed upward by the scraping plate 67 of the coarse cake scraper 64 and is discharged out of the filtration tank 1 through the discharge port Y.

  The unfiltered oil F1 in the unfiltered oil space V2 is collected on the filter medium 9 on the perforated plate portion 18 by the suction force of the suction pump P, and passes through these to become the filtered oil F2. After passing through the space V3 in 17 and being collected in the header part 15, it is moved to the suction line 7 side. In addition, much unfiltered oil F1 gathers on the filter material 9 of the lower side of the bottom wall part 11 and the rear wall part 12 of the filtration tank 1 which has the opening K close | similar to the suction line 7, and is shown in FIG. Then, it is filtered through the filter medium 9 attached so as to be adsorbed to the perforated plate portion 17.

  And, if the adhering matter is attached to the filter medium 9 on the perforated plate portion 17, the suction amount by the suction pump P is reduced, and the outlet pressure of the suction pump P is lowered, so if this outlet pressure is lowered below a predetermined value, The filter medium 9 on the perforated plate portion 17 needs to be discharged out of the filtration tank 1 and a new filter medium 9 needs to be transferred here. For this reason, when the outlet pressure of the suction pump P falls below a predetermined value, the first motor-operated valve 71 is closed, the suction of the unfiltered oil F1 from the filter medium 9 and the perforated plate portion 17 side is stopped, and the second motor-operated valve 81. The unfiltered oil F1 in the filtration tank 1 is sucked to the suction line 7 side through the bypass line 8. As a result, the adsorptive power of the filter medium 9 to the porous plate portion 17 is weakened (the pressure in the unfiltered oil space V2 and the pressure in the internal space V3 on the porous plate portion 17 side are not immediately the same), and the filter medium 9 becomes It can be transferred relatively easily.

  Therefore, the drive source 32 is operated, and the filter medium 9 set in the filter tank 1 by the filter medium transfer device 2, the friction roller device 4, and the belt conveyor 5 is not soiled by a predetermined length, that is, by filtration. The filter medium 9 is transported while being unwound from the filter medium roll 90 until the tip of the filter medium 9 (the position of the driven sprocket shaft 22B in FIG. 1) is detected by the filter medium detector 31. In this case, the filter medium 9 contaminated with the deposit on the perforated plate portion 17 is transferred to the perforated plate portion 17 side while being adsorbed to some extent, so that the deposit is diffused again to the unfiltered oil F1 side. There is no end to it. Then, when the transfer of the filter medium 9 is completed, the opening and closing of the first motor-operated valve 71 and the second motor-operated valve 81 are switched, and the filtration of the coarse soot-containing oil F0 to the filtered oil F2 is started again.

  When the operation of the fryer B for one day is finished, for example, the unfiltered oil F1 in the fryer B and the filtration tank 1 is changed to the filtered oil F2, transferred to another oil tank, and then cleaned in the filtration tank 1. Prepare for the next day's operation. In this case, the filter medium 9 in the filter tank 1 is separated from the filter medium roll 90 and discarded.

  In addition, when the filter medium 9 is removed from the filter medium roll 90 during the filtering operation by the filtering device A, after switching between opening and closing of the first electric valve 71 and the second electric valve 81, for example, the filtration tank 1 The filter medium 9 in the filter medium 9 is all discharged, and then a new filter medium roll 90 is installed in the roll installation unit 16 and the filter medium 9 from the filter medium 9 is set in the filter tank 1. Of course, the filter medium 9 from the new filter medium roll 90 may be transferred to the filter tank 1 while observing the situation without discharging the filter medium 9.

  As described above, in this filtration device A, a pair of loop-shaped transfer units 20 and 20 that are arranged to face each other and a part of the rotational movement route passes near the position of the filter paper 9 in the filtration tank 1 and a pair of Nipping shears 23 that are mounted at a predetermined pitch so as to face the transfer units 20 and 20, sandwich the left and right ends of the filter medium 9, and position the filter medium 9 in the filter tank 1; A cam which engages with the holding scissors 27 moved to the discharge side of the filter medium 9 and the filter medium roll 90 side with the rotational movement of the filter medium 20 and opens the holding scissors 27 against the elastic force. Since the filter medium transfer means 2 provided with the members 28 and 29 is provided, the filter medium 9 can be easily positioned in the filter tank 1, and the filter medium roll 90 can be moved by rotating the transfer sections 20 and 20. On the side, the sandwiching scissors 23 sandwich the filter medium 9 The filter medium 9 can be unwound by moving the filter medium 9, and on the discharge side of the filter medium 9, the holding pinch 23 sandwiching the filter medium 9 can be separated from the filter medium 9. The filter medium 9 can be easily transferred.

  Therefore, in this filtration apparatus A, when the filter medium 9 unwound from the filter medium roll 90 is set on the inner surface side of the filter tank 1 and the unfiltered oil F1 in the filter tank 1 is filtered, this filter medium is used. 9 can be easily set on the inner surface side of the filtration tank 1. In particular, the filter medium transfer device 2 is suitable for setting the filter medium 9 in the filter tank 1 when there is no oil in the filter tank 1 or when the filter medium 9 is not adsorbed on the porous plate portion 17 side. Yes.

  Moreover, in this filtration apparatus A, it is provided in the bottom wall part 11 and the rear wall part 12 side of the filtration tank 1, and is provided in the perforated plate part 17 side where the filter medium 9 is piled up so that it may protrude slightly from the upper surface. The filter media 9 on the perforated plate portion 17 is moved so as to assist the filter media transfer device 2 by rotating the plurality of friction rollers 40 in synchronization with the rotational movement of the transfer sections 20 and 20 of the filter media transfer device 2. Since the friction roller device 4 is provided, the filter medium 9 in the filtration tank 1 can be smoothly transferred, and the filter medium 9 can be transferred even if the filter medium 9 is adsorbed to the perforated plate portion 17 side to some extent. Can be transported. Therefore, the filter medium 9 can be transferred without diffusing deposits on the filter medium 9 into the filter tank 1.

  Further, in this filtration device A, the first electric valve 71 that is closed when the filter medium 9 is unwound is provided in the suction line 7 on the downstream side of the perforated plate portion 17, and the suction line 7 on the outlet side of the first electric valve 71 is provided. Since the second motor-operated valve that is opened when the filter medium 9 is unwound is provided in the bypass line 8 connecting the unfiltered oil F1 side of the filter tank 1, the first motor-operated valve 71 is closed when the filter medium 9 is transferred. 2 By opening the electric valve 81, the adsorption force of the filter medium 9 toward the perforated plate portion 17 can be reduced, so that the filter medium 9 can be easily transferred by the filter medium transfer device 2, the friction roller device 4, or the like. In this case, since the filter medium 9 can be slightly adsorbed on the perforated plate portion 17 side, the filter medium 9 can be transferred without diffusing deposits on the filter medium 9 into the filter tank 1.

  The suction pump P is stopped when the filter medium 9 is unwound from the filter medium roll 90 and set in the filter tank 1 or when the filter medium 9 on the porous plate portion 18 in the filter tank 1 is replaced with a new filter medium 9. You may make it do. In this case, the filter medium 9 can be transferred without the friction roller device 4 or the like.

  In addition, a pair of discharge rollers that sandwich and rotate the filter medium 9 and discharge the filter medium 9 may be provided at the discharge position b.

  Further, the perforated plate portion 18 may be provided only on the bottom wall portion 11 side of the box-shaped stepped portion 17 having the opening K, and the friction roller device 4 may be provided on the perforated plate portion 18 side.

  In addition, the operation of the filter medium transfer device 2, the friction roller device 4, the belt conveyor 5, the first electric valve 71, the second electric valve 81, etc. is automated by providing a control device, and the filter medium 9 into the filtration tank 1 is automated. You may make it perform a setting and the transfer operation | work of the used filter medium 9 from the perforated plate part 18 automatically. Further, the filter medium 9 on the porous plate portion 18 may be replaced at regular intervals, instead of replacing the filter medium 9 on the porous plate portion 18 depending on the amount of deposits on the filter medium 9.

DESCRIPTION OF SYMBOLS 1 Filtration tank 2 Filter material transfer apparatus (filter material transfer means)
4 Friction roller device (auxiliary transfer means)
DESCRIPTION OF SYMBOLS 7 Suction line 8 Bypass line 9 Filter medium 11 Bottom wall part 12 Rear wall part 17 Perforated board part 20 Transfer part 23 Nipping shears 28, 29 Cam member 40 Friction roller 71 1st motor valve (1st stop valve)
81 Second motor operated valve (second stop valve)
F1 Unfiltered oil F2 Filtered oil A Position immediately after unwinding (filter medium roll side)
B Discharge position (filter medium discharge side)

Claims (3)

A thin strip-shaped filter medium that is unwound from the filter medium roll placed above the front side of the filtration tank, passes through the inner surface side of the filter tank, and is discharged outward from the rear side. In the filtration device that filters the unfiltered oil in the filtration tank by sucking it on the downstream side of the porous plate part, overlaid on the porous plate part formed in
A part of the rotational movement route, which is arranged facing each other, is attached at a predetermined pitch so as to face a pair of loop-shaped transfer parts passing through the vicinity of the left and right ends of the filter medium in the filtration tank, and the pair of transfer parts, The right and left ends of the filter medium are sandwiched between the holding scissors for positioning the filter medium in the filtration tank, and the filter medium discharge side and the filter medium roll side as the transfer unit rotates. Filtering means characterized by having a filter medium transfer means provided with a cam member that engages with each of the moved holding scissors and opens the holding scissors against the elastic force. apparatus. The perforated plate portion of the filtration tank is formed on the inclined inner surface side on the rear side of the filtration tank so as to follow the one on the bottom side,
By rotating a plurality of friction rollers provided so as to slightly protrude from the upper surface of the perforated plate part of the filtration tank in synchronization with the rotational movement of the transfer part of the filter medium transfer means, the filter medium transfer means The filtration apparatus according to claim 1, further comprising auxiliary transfer means for moving the filter medium on the perforated plate portion so as to assist.   The suction line on the downstream side of the perforated plate portion is provided with a first stop valve that is closed when the filter medium is unwound, and the suction line at the outlet of the first stop valve and the unfiltered oil side of the filtration tank, The filtration device according to claim 2, wherein a second stop valve that is opened when the filter medium is unwound is provided in a bypass line that connects the two.

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