JPH0659368B2 - Filter press - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a filter press capable of taking out a cake in a filter frame in a double filter press with almost no loss of shape.

2. Description of the Related Art Conventionally, a double filter press having various structures is known. For example, in order to prevent the cake from losing its shape, when the filter frame is opened after the filtration is finished, the cake in the filter frame is dropped along the filter frame, and the dropped cake is placed along the inclined plate to cake. There is one that is housed in a collection box (Jitsuko Sho 43-28773).

However, the structure described above has a problem that the shape of the cake may be broken due to bending of the cake while moving from the inside of the filter frame to the inclined plate.

Therefore, an object of the present invention is to solve the above problems, and to provide a filter press capable of discharging the cake from the filter frame without substantially losing its shape.

Means for Solving the Problems In order to configure the above object, the present invention, when inclining a filter frame, arranges an inclined cake discharging sheet below the filter frame, and removes the cake taken out from the filter frame as described above. It is configured so that it can be discharged smoothly along the seat without losing its shape. That is, in a filter press in which filter plates and filter frames are alternately arranged and suspended by a side beam between front and rear stands to suspend and support, and filter cloths are arranged on both sides of each filter frame, each filter frame is inclined. While being supported by the side beam as much as possible, a pair of feed pieces is arranged so as to be movable up and down, and each feed piece engages with the handle of each filter frame and each filter plate at either one of the upper and lower positions, while vertically. When the feed piece engages with the handle of each filter frame and each filter plate at the one position while releasing the engagement with the handle at the other position, the pair of feed pieces is integrally moved forward and backward. A feed member for moving each filter frame and each filter plate in the front-back direction one by one in the direction, an inclination drive device for inclining the filter frame at a predetermined position, and below the filter frame located at the predetermined position. And a cake discharge sheet that is placed at an angle Be configured so that.

In the above structure, the sheet is the filter cloth and is provided above each filter frame and the filter plate, and the filter cloth, which is the sheet, is wound or unwound according to the time of filtration and the time of discharging the cake. It is also possible to further include a filter cloth winding / rewinding device.

According to the above configuration, after the filtration is completed, the feeding member is engaged with the filter frame and the filter frame is moved to a predetermined position manually or by the driving device, and then the cake discharge sheet is placed below the filter frame. When the filter frame is tilted by the tilt drive device, the cake is taken out from the filter frame and dropped onto the sheet, and the cake is discharged along the sheet. Therefore, the cake can be taken out from the inclined filter frame almost as it is onto the sheet, the cake can be discharged along the sheet, and the cake can be effectively prevented from losing its shape.

Example Hereinafter, an example according to the present invention will be described in detail with reference to FIGS.

In the filter press according to this embodiment, as shown in FIGS. 1 and 13, filter plates 1 and filter frames 2 are alternately arranged between front and rear stands, and the filter plates 1 and filter frames 2 are side beams 4. , 4 are supported so as to be movable back and forth, and filter cloths 8 are provided on both sides of each filter plate 2.
0 and 80 are arranged, the filter plate 1 and the filter frame 2 are fastened to the front stand side by the forward movement of the movable plate 71 at the same time, and then the filtering operation is performed. When the filter frame 2 and the filter plate 1 are retracted one by one by the feed member 5 of the moving device 9, the filter frame 2 is moved to a predetermined position by the feed member 5 and the cake discharge sheet 3 is arranged below the filter frame 2. Then, the filter frame 2 is tilted by the tilt drive device 40, the cake 70 is taken out from the filter frame 2 and dropped onto the sheet 3,
The cake 70 is configured to be discharged along the sheet 3.

Each filter plate 1 is a well-known one and is made of a plate-like member. The filter plates 1 are hung and supported by the side beams 4 and 4 so as to be movable back and forth by the grips 1a having a rectangular cross section on both sides, and a pair of filter plates 1 and
The cake 70 is held in the filter frame 2 sandwiched between the two.

Each filter frame 2 is composed of a frame body capable of holding the cake 70 therein, and is suspended and supported by the side beams 4 so as to be movable back and forth by the grips 2a on the both sides of the frame body. Each of the handles 2a has a cylindrical end portion so that it can smoothly slide on the upper surface of the side beam 4, and the filter frame 2 can be rotated and tilted with respect to the side beam 4 about the axis of the handle 2a. And

As shown in FIG. 1, at each corner of each filter frame 2, through holes 2b, 2b for supplying undiluted solution and a fluid for collecting or cleaning filtrate (for example,
It has through holes 2c, 2c for supplying cleaning water or compressed air.

Each filter cloth 80 is placed on each filter plate 1 in a U-shape from above and is arranged between the filter plate 1 and the filter frame 2, and holes (b) corresponding to the through holes 2b and 2c of each filter frame 2 ( (Not shown). The filter cloth 80 may be suspended and supported from above the filter plate 1 by a well-known suspending means.

The cake discharge sheet 3 is a member made of cloth, synthetic resin sheet, or the like to smoothly discharge the cake. The upper end of the sheet 3 is locked to a sheet winding shaft 44, which will be described later, while the lower end is locked to the sheet suspension rod 30, and the weight of the sheet suspension rod 30 causes the sheet 3 to move along the surface along the vertical direction. It is supposed to be expanded.

In the moving device 9, a chief 8 is arranged on each side between the front and rear stands, and upper ends of both main columns 8 and 8 are connected by an upper plate 42, while a lower plate 31 is attached to a lower end of each main column 8. Is fixed so that it can be moved back and forth. The moving device 9 is generally provided with a sheet winding / rewinding device and a filter frame tilt drive device on the upper plate side, and the feeding member 5 for moving the filter plate 1 and the filter frame 2 to the main column 8 one by one.
The lower plate 31 is provided with a seat tilt drive mechanism and a main pillar drive mechanism 10 for moving the main pillars 8, 8 in the front-rear direction.

As shown in FIGS. 1 to 5, the sheet winding / rewinding device includes a sheet winding shaft 44 rotatably supported by bearings 46, 46 on the upper plate 42 via stands 77, 76. One end of the sheet winding shaft 44 is connected to the sheet winding mounting device 50 via the bearing 46, while the other end is connected to the bearing 46.
And a seat drive motor 43 via a clutch mechanism. As shown in detail in FIGS. 6 and 7, the clutch mechanism includes a bearing 46 on the rotary shaft 73 of the seat winding shaft 44.
The first connecting member 47 is fixed via. A recess 47a is formed in the first connecting member 47, and the recess 4a is formed.
7a has a protrusion 47b protruding in the radial direction. On the other hand, the second connecting member 48 having the convex portion 48a fitted in the concave portion 47a of the first connecting member 47 with a predetermined play is arranged coaxially with the first connecting member 47. The second connecting member 48 has a protrusion 48b, which is engageable with the protrusion 47b of the first connecting member 47 and protrudes in the radial direction, on the convex portion 48a. The first connecting member 48 is fixed to a drive shaft 72, and the drive shaft 72 has a sprocket 81 and a seat drive motor 43 connected by a belt 49.

Therefore, the sheet winding / rewinding device having the clutch mechanism operates as follows. That is, the sheet winding shaft 44 is moved by the constant torque spring 52 in the sheet winding direction (6th
When the seat suspension rod 30 is located at the upper end position (see FIGS. 4 and 5), the first connection is made to the protrusion 48b of the second connection member 48. Member 47
The protrusion 47b is engaged. In this state, when the drive motor 43 rotates to lower the seat suspension rod 30, the drive shaft 72 and the second connecting member 48 rotate via the belt 49 and the sprocket 81. That is, in FIG. 6, the second connecting member 48 rotates in the arrow A direction, and the engagement between the protrusion 48b and the protrusion 47b causes the first connecting member 47 to move in the direction opposite to the arrow B direction, that is, the sheet rewinding direction. The sheet 3 is rotated to the sheet winding shaft 4
The sheet suspension rod 30 is lowered by rewinding from 4. When the seat suspension rod 30 is located at the lower end position as shown in FIGS. 1 and 2, the seat drive motor 43 is stopped. In this state, the second connecting member 48 is urged by the urging force of the constant torque spring 52.
The protrusion 47b of the first connecting member 47 is engaged with the protrusion 48b of the. In this state, when the seat suspension bar 30 is moved from the lower side of the seat tilt bar 45 to the rear side and the seat 3 is tilted, as shown by the one-dot chain line in FIG. Although it is slightly rewound from the take-up shaft 44, it is moved in the direction in which the protrusion 47b moves away from the protrusion 48b against the biasing force of the constant torque spring 52, so that no overload acts on the motor side and the seat 3
Also, the overload does not work. Further, when the sheet 3 is tilted, the biasing force of the constant torque spring 52 is applied to the sheet 3 to hold the sheet 3 in a stretched state, so that the cake 70 is removed even if the cake 70 is taken out from the filter frame 2. The sheet 3 is smoothly slid downward and discharged without accumulating on the sheet 3. On the other hand, when the sheet 3 is wound up, the seat drive motor 43 is rotated in the reverse direction, and the second connecting member 48 rotates in the direction opposite to the direction of arrow A in FIG. 6, so that the engagement between the protrusions 48b and 47b occurs. The sheet 3 is temporarily released, and the sheet 3 is wound around the sheet winding shaft 44 by the urging force of the constant torque spring 52, and when the protrusions 48b and 47b are engaged by the rotation of the sheet drive motor 3, the sheet winding is assisted. The shaft 44 is further rotated to wind the sheet 3 around the sheet winding shaft 44, and the sheet suspension rod 30 is raised to the upper end position.

A sheet tilt bar 45 is rotatably supported by bearings 46, 46 on the upper plate 42 in the vicinity of and below the sheet winding shaft 44.

In addition, while the seat tilt bar 44 is made non-rotatable,
You may make it the seat 3 run smoothly on the surface.

As shown in FIGS. 11 and 12, the seat winding attaching device 50 includes a case 51 having a constant torque spring 52 and first and second winding shafts 53 and 54. The constant torque spring 52
Has the property of exhibiting a constant torque regardless of the amount of deflection, and is biased in the free winding direction. The first winding shaft 53 is supported by the lower part of the case 51, and the constant torque spring 52 is wound freely. Also, the second
The take-up shaft 54 is supported on the upper part of the case 51 with respect to the first take-up shaft 53, and the shaft 54a thereof has the above-mentioned sheet take-up shaft 44.
One of the rotating shafts 44a is connected to the one rotating shaft 44a by a coupling 55 so as not to rotate relative to each other, and the radius of the winding portion 54b is larger than the free winding radius of the constant torque spring 52. At the winding portion 54b of the second winding shaft 54, one end of the constant torque spring 52 wound around the first winding shaft 53 is attached to the screw 5
6, 56, so that the constant torque spring 52 can be wound in the reverse direction in the direction indicated by the arrow in FIG. 12 (the sheet rewinding direction of the sheet winding shaft) so that the sheet winding shaft 44 can be rewound during the sheet rewinding. A rotational biasing force is applied to the sheet winding direction.

Further, the filter frame tilt drive device has the following structure. At the center of the upper plate 42, a tilting drive piston 40, which is swingably supported via a base 41, is arranged. The contact portion 40a at the tip of the piston rod of the tilt drive piston 40 comes into contact with the upper end portion of the filter frame 2 by the drive of the piston 40 and rotates the filter frame 2 around the axes of the grips 2a and 2a so that the filter frame 2 is fixed. It is to incline.

As shown in FIGS. 8 to 10, the feeding member 5 is provided with a filter frame 1
The filter frame 2 and the filter frame 2 are retracted one by one, and are configured as follows. That is, the box body 74 is fixed to the central portion of the main pillar 8 in the vertical direction, and the pair of feed pistons 6 and 7 are arranged below the box body 74 and adjacent in the front-rear direction. Piston rods 6b, 7 of these feed pistons 6, 7
The feeding portions 6a, 7a are fixed to the tip of b, and the feeding portions 6a, 7a are fixed.
Is protruded toward the filter plate 1 and the filter frame 2 side from inside the pair of vertical grooves 74a, 74a elongated in the vertical direction, and the vertical grooves 74a, 74
It can move up and down within a predetermined range within a. The feeding section 6
The a and 7a move between a lower position where they can come into contact with the tips of the handle 1a of the filter plate 1 and the handle 2a of the filter frame 2 and an upper position where they do not come into contact with these handles 1a and 2a. It is like this.

Further, the lower plate 31 is provided with the seat tilt drive mechanism on the filter plate / filter frame side, that is, on the inner side, and the main pillar drive mechanism 10 of the moving device 9 on the outer side.

The seat tilt drive mechanism has the filter plate 1 and the filter frame 2 on both sides.
An inclined drive chain 18 is stretched between a pair of sprockets 20 and 20 inside a support channel 17 which is located below the lower end of the support channel and along the front-rear direction, and one sprocket on one side. Belt 20
It is connected to the tilt drive motor 21 via 2. The sprocket 20, 20 on the motor side of the pair of sprocket 20, 20 on both sides facing each other is connected by a rotary shaft 25 via an intermediate bearing 24, and the motor 21 rotationally drives one sprocket 20, 20. Then, the other sprocket 2
The rotary shafts 0 and 20 also rotate synchronously. An inverted L-shaped inclined claw 19 is locked to an upper portion of the inclined drive chain 18 between the sprockets 20 on each side, and the inclined claw 19 is engaged with the seat suspension rod 30.
Can be locked at each end. The intermediate bearing 24 may be omitted. Further, in FIG. 2, reference numeral 78 is a water avoiding plate for preventing moisture contained in the cake 70 from entering the sprocket portion, the motor portion and the like.

On the other hand, the main pillar drive mechanism 10 of the moving device 9 has the following structure, as shown in FIGS. That is, a feed channel 14 having a U-shaped cross section is arranged along the front-rear direction on each of the lower side portions between the front and rear stands, a rail 15 is arranged on the upper surface of the channel 14, and bearings 11 are arranged on the rail 15 respectively. A pair of front and rear moving rollers 16 supported,
16 runs. The pair of front and rear bearings 11, 11 are connected to each other by a connecting tool 12, and the connecting tool 12 is locked to a drive chain 13 arranged in the channel 14. The drive chain 13 is connected to sprockets (not shown) respectively arranged on the front and rear stands, and when one of the sprockets is driven by a drive motor (not shown), the drive chains 13 on both sides rotate in synchronization with each other. Ingredient 1
2, 12 are moved back and forth, and moving device 9 is moved back and forth by moving rollers 16 ,.

According to the above configuration, when performing filtration, the filter plate 1 and the filter frame 2 are fastened to the front stand side by the movable frame 71, and the undiluted solution is supplied into the filter frame to remove the space between the filter frame 2 and the filter plate 1. Filtering is performed with the filter cloth 80. After completion of filtration, only the movable plate 71 is retracted to the vicinity of the rear stand. Then, after that, the moving device 9 located near the movable plate 71 located on the stand side is moved leftward in FIG. 13 by the driving of the main pillar drive mechanism 10. At this time, the two feed portions 6a, 7a of the feed member 5 are located in the upper position above the grips 1a, 2a where they are not engaged, and then, as shown in the central portion of FIG. After lowering the portion 7a to the lower position, the feeding portion 7a is stopped at a position facing the handle 2a of the filter frame 2. After that, the front feeding part 6a is lowered to the lower position, and the grip 2a is sandwiched by both feeding parts 6a, 7a. Then, as shown in FIG. 14, the moving device 9 is retracted to an intermediate position between the movable plate 71 and the filter plate 1 and stopped, and the sheet 3 is rewound by the sheet rewinding / rewinding device to rewind the sheet suspension bar. 30 is lowered from the upper end position to the lower end position. Next, with the seat suspension rod 30 positioned at the lower end position below the seat tilt rod 45, the tilt drive motor 21 is driven to drive the chain 1
When 8 and 18 are rotated, the inclined claws 19 and 19 are moved in the backward direction as shown by the alternate long and short dash line II in FIG. 2 and the solid line in FIG. Each end of the seat suspension rod 30 enters, the seat suspension rod 30 moves rearward together with the inclined claws 19 and 19, and the seat 3 inclines with respect to the seat inclination rod 45. At this time, the filter frame 2 slightly tilts around the axes of the handles 2a, 2a as the seat 3 tilts. Then, when the tilt drive piston 40 is driven and the upper end of the filter frame 2 is tapped (III and the first dashed line in FIG.
5, the cake 70 in the filter frame 2 falls on the sheet 3 as it is, is discharged while sliding downward along the sheet 3, and is then carried out by a conveyor or the like not shown.

On the other hand, after discharging the cake 70, the tilt drive piston 4
While returning the contact portion 70a of 0 to the original non-driving position,
The tilt drive motor 21 is rotated in the reverse direction so that the chains 18, 18
The inclined claws 19, 19 are moved forward by the
Is returned to the original lower end position to return the seat 3 to the lower end position where the seat 3 is simply suspended by the weight of the seat suspension rod 30, and the engagement between the inclined claws 19 and 19 and the seat suspension rod 30 is released. As a result, the filter frame 2 also returns to its original position in the vertical direction (see the state I shown by the solid line in FIG. 2). In this state, the sheet winding / rewinding device winds the sheet 3 and returns the sheet suspension rod 30 to the upper end position. Then, with the handle 2a of the filter frame 2 being sandwiched between the two feeding parts 6a and 7a, the moving device 9 is retracted to retract the filter frame 2 and stop at the retracted position where it contacts the movable plate 71. Then, as shown in FIG. 13, both feeding portions 6a and 7a are once positioned at the upper position to disengage from the grip 2a, and then the moving device 9 is moved forward again, and the rear feeding portion 7a is moved midway. After lowering only the chisel to the lower position, the moving device 9 is stopped at the position where the rear side feeding portion 7a comes into contact with the handle 1a of the filter plate 1. Then, the front feeding portion 6a is lowered to the lower position and the handle 1 is placed between the feeding portions 6a and 7a.
After sandwiching a, the moving device 9 is retracted. At this time, unlike the filter frame 2, the filter plate 1 moves to the movable plate 71 side without stopping at the intermediate position, and the moving device 9 stops so as to come into contact with the filter frame 2 located at the retracted position. In this way, the filter frame 2 or the filter plate 1 is sequentially retracted one by one, the filter frame 2 is temporarily stopped at the intermediate position, the cake 70 is discharged through the sheet 3, and then the filter frame 2 is retracted to the retracted position. The filter plate 1 is not stopped at the intermediate position. When all filter plates 1 and all filter frames 2 have been retracted, the movable plate 71 tightens all filter plates 1 and all filter frames 2 on the front stand side to prepare for the next filtration.

According to the above-mentioned embodiment, after the filtration is completed, the filter frame 2 is moved to the feeding member 5
After being moved to a predetermined position by the moving device 9 in a state of being engaged with, the cake discharge sheet 3 is arranged below the filter frame 2 with a tilt, and the filter frame 2 is tapped with a tilt drive piston 40 to tilt it. At this time, the cake 3 is dropped from the inside of the filter frame onto the sheet 3 inclined along the inclination angle of the filter frame 2 in a state almost the same as the shape held in the filter frame.
The cake 70 is discharged while being guided further down along. Therefore, the cake 70 can be recovered from the inside of the filter frame 2 through the sheet 3 with almost no deformation.

The present invention is not limited to the above embodiment,
It can be implemented in various other modes. For example, the tip of the handle 2a of the filter frame 2 is not limited to a circular cross section, and may have a cross section of any shape such as a quadrangular cross section. Further, the tilt drive piston 40 is not limited to the one that drives the upper end of the filter frame 2 that is tilted to some extent, but the filter frame 2 is not tilted and is positioned vertically (see the solid line I in FIG. 2). ), The piston 40 may be driven to incline to a predetermined angle.
The moving device 9 may be manually moved back and forth. Further, the filter plate 1 and the filter frame 2 are set back to the rear stand side to discharge the cake 70 from the inside of the filter frame 2. However, once the filter frame 2 and the filter plate 1 are set back to the rear stand side. After that, the cake 70 may be discharged from the filter frame 2 while advancing one by one. Further, the inclination direction of the filter frame 2 is not limited to that shown in the figure, and the filter frame 2 may be inclined so that the upper end side thereof is located on the rear stand side and the lower end part thereof is located on the front stand side. Further, the sheet 3 is used as a filter cloth, and a sheet winding / rewinding device is provided between each filter frame 2 and the filter plate 1 so as to function as a normal filter cloth at the time of filtration, and a cake discharge guide at the time of cake discharge. You may make it function as a member.

[Brief description of drawings]

1, 2 and 3 are front views, side views and plan views showing the relationship between a filter frame and a moving device of a filter press according to an embodiment of the present invention, and FIGS. 4 and 5 are seat suspension rods, respectively. Front and side views of the upper part of the moving device showing the upper end position of the clutch device, and FIGS. 6 and 7 are front and cross sectional side views of the clutch mechanism, respectively.
0 is a front view, a cross-sectional side view and a cross-sectional plan view of the feeding member, FIGS. 11 and 12 are partial cross-sectional front views and side views of the sheet winding attachment biasing device, and FIGS. 13 to 16 are the filter presses, respectively. FIG. 7 is an explanatory diagram showing the operation of FIG. 1 ... Filter plate, 1a, 2a ... Handle, 2 ... Filter frame, 3 ... Sheet, 4 ... Side beam, 5 ... Feeding member, 6,7 ... Feeding piston, 6a, 7a ... Feeding Part, 8 ... Main column, 9 ... Movement device, 10 ... Main column drive mechanism, 11 ... Bearing, 12 ... Coupling, 13 ... Drive chain, 14 ... Feed channel, 15 ... Rail, 16 ……
Moving roller, 18 ... Inclined drive chain, 19 ... Inclined claw, 20 ... Sprocket, 21 ... Drive motor, 22 ... Belt, 24 ... Intermediate bearing, 25 ... Rotation shaft,
30 ... Seat suspension rod, 31 ... Lower plate, 40 ... Tilt drive piston, 41 ... Stand, 42 ... Upper plate, 43 ... Drive motor, 44 ... Sheet winding shaft, 45 ... Sheet Inclined bar, 46 ... Bearing, 47 ... First connecting member, 48 ... Second connecting member, 49 ... Belt, 50 ... Sheet winding mounting device, 51 ... Case, 52 ... Constant torque spring, 53 , 54 ...... first and second winding shafts, 55 ... coupling, 56 ... screw, 70 ... cake, 71 ... movable plate,
72 ... drive shaft, 73 ... rotating shaft, 74 ... box, 76,77 ... stand, 78 ... water avoiding plate, 80 ... filter cloth, 81 ... sprocket.

Claims (2)

[Claims] A filter plate (1) and a filter frame (2) are alternately arranged and suspended by a side beam (4) between front and rear stands so as to be movable back and forth, and both sides of each filter frame (2) are supported. In the filter press in which the filter cloth (80) is arranged on each side, each filter frame (2) is tiltably supported by the side beam (4), while a pair of feed pieces (6a, 7a) is vertically movable. Each feed piece
(6a, 7a) is engaged with the handle (2a, 1a) of each filter frame (2) and each filter plate (1) at one of the upper and lower positions, while the handle (2a) is engaged at the other of the upper and lower positions. , 1a), and each feed piece (6a, 7a) is engaged with the filter frame (2) and the handle (2a, 1a) of each filter plate (1) at the one position. At this time, a feed member that moves the pair of feed pieces (6a, 7a) integrally in the front-rear direction to move the filter frames (2) and the filter plates (1) one by one in the front-rear direction.
(5) and a tilt drive device (40) for tilting the filter frame (2) at a predetermined position
And a cake discharge sheet (3) which is arranged to be inclined below the filter frame (2) located at the predetermined position, the filter press comprising: 2. The sheet is the filter cloth, is provided above each filter frame and the filter plate, and winds or unwinds the filter cloth which is the sheet depending on the time of filtration and the time of discharging the cake. The filter press according to claim 1, further comprising a filter cloth winding / rewinding device.