JPH0655245B2 - 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 a filter press in which filter plates and filter frames are alternately arranged by a side beam between the front and rear stands so as to be movable back and forth, and the filter frames are suspended and supported. On the other hand, the lower end of each filter frame is connected to a filter plate extending on the rear side via a link, and when the filter frame is opened, the filter frame and the filter plate are moved by the open frame to move the filter frame upward and downward. There is one in which a link is operated to incline the filter frame between the front filter plate and the rear filter plate so as to discharge the cake in the filter frame (Japanese Patent Publication No. 43-18662).
issue).

Further, as another structure, in the adjacent filter plate and filter frame, the upper end of the filter frame and the lower end of the filter plate are connected by a filter cloth, and by moving the filter plate when the filter plate and the filter frame are opened. The filter frame is tilted,
There is one in which the cake in the filter frame is discharged (Jitsuko Sho 44-3196).

SUMMARY OF THE INVENTION However, the former structure has a problem that the tilting operation of the filter frame becomes unstable.

Further, the latter structure has a problem that the filter cloth may be stretched due to long-term use, which may hinder the tilting operation of the filter frame.

Therefore, an object of the present invention is to solve the above problem, and to provide a filter press capable of more reliably performing the tilting operation of the filter frame while stably supporting the filter frame.

Means for Solving the Problems In order to achieve the above object, the present invention provides a cake from the filter frame by tilting the filter frame moving while being guided in the front-rear direction by a side beam at a predetermined position by a tilt drive device. Is configured to be discharged. 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 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,
When the engagement with the handle is released at the other upper or lower position, when the feed pieces engage with the handles of the filter frames and the filter plates, the pair of feed pieces are integrally moved in the front-rear direction. It is configured to include a feeding member that moves the filter frames and filter plates one by one in the front-rear direction, and a tilt drive device that tilts the filter frames at a predetermined position.

According to the above configuration, after the filtration is completed, the feed member is engaged with the filter frame to move the filter frame to a predetermined position manually or by the driving device, and then the filter frame is tilted by the tilting drive device. By doing so, the cake is dropped from the inside of the filter frame and discharged.
Therefore, the filter frame can be tilted by the tilt drive device while being stably supported with respect to the side beam, and the filter frame is not tilted by the filter cloth or the like.
The tilting drive device can tilt the filter frame more reliably.

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 that they can move back and forth, and filter cloths 80, 80 are provided on both sides of each filter plate 2.
The filter plate 1 and the filter frame 2 are fastened to the front stand side by advancing the movable plate 71 at the same time, and then the filtering operation is performed.
When the feeding member 5 of the moving device 9 retracts the filter plate 1 and the filter plate 1 one by one, the feeding member 5 moves the filter frame 2 to a predetermined position, and the cake discharge sheet 3 is arranged below the filter frame 2 2 is tilted by the tilt drive device 40, the cake 70 is taken out from the inside of the filter frame 2 and dropped onto the sheet 3, and the sheet 3
Is configured to discharge the cake 70 along.

Each filter plate 1 is a well-known one and is made of a plate-like member, and is supported by the side beams 4, 4 movably back and forth by the grips 1a, 1a having rectangular cross-sections on both sides. The cake 70 is held in the filter frame 2 sandwiched between the ones.

Each filter frame 2 is composed of a frame body capable of holding the cake 70 inside, 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 at which the upper surface of the side beam 4 can be slid smoothly, and the filter frame 2 can be rotationally 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 through holes 2c for supplying a fluid for recovering or cleaning a filtrate (for example, washing water or compressed air) are provided. 2c and.

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 each through hole of each filter frame 2 is provided.
It has holes (not shown) corresponding to 2b and 2c. 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 present embodiment, the sheet 3 is arranged in order to discharge the cake more smoothly from the filter frame 2, and is basically not necessary.

In the moving device 9, the main pillar 8 is arranged on each side between the front and rear stands, and the upper ends of both main pillars 8 and 8 are connected by the upper plate 42, while the lower plate is attached to the lower end of each main pillar 8. 31 is fixed and 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 column drive mechanism 10 for moving the main columns 8 and 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 4
6 and a clutch mechanism to connect to a seat drive motor 43. In the clutch mechanism, as shown in detail in FIGS. 6 and 7, the bearing 4 is attached to the rotary shaft 73 of the seat winding shaft 44.
The first connecting member 47 is fixed via 6. A recess 47a is formed in the first connecting member 47, and the recess 47a is formed.
It has a protrusion 47b protruding in the radial direction. On the other hand, the second connecting member 48 having the convex portion 48a fitted with a predetermined play in the concave portion 47a of the first connecting member 47 is arranged coaxially with the first connecting member 47. The second connecting member 48 has a protrusion 48b that 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 includes a sprocket 81 and a seat drive motor 43 for the belt 4.
9 are connected.

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,
The drive motor 43 for lowering the seat suspension rod 30
When is rotated, the drive shaft 72 and the second connecting member 48 are rotated 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 seat 3 is rewound from the seat take-up shaft 44 by rotating the seat 3 to lower the seat suspension bar 30. 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 protrusion 47b of the first connecting member 47 is engaged with the protrusion 48b of the second connecting member 48 by the biasing force of the constant torque spring 52. In this state, when the seat suspension rod 30 is moved from the lower side of the seat tilt rod 45 to the rear side to incline the seat 3 as shown by the one-dot chain line in FIG. 2, the seat 3 is pulled to wind the seat. Although it is slightly rewound from the take-up shaft 44, the constant torque spring 52 is moved in the direction in which the protrusion 47b moves away from the protrusion 48b.
Since it is moved against the urging force of No. 3, no overload acts on the motor side and no overload acts on the seat 3. 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 the expanded state, so that the cake 7 can be taken out even if the cake 70 is taken out from the filter frame 2.
It is arranged that 0 is not slid on the sheet 3 and is smoothly slid downward and discharged. 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 is rotated in the direction opposite to the arrow A direction 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. The seat tilt bar 44
May be made non-rotatable, while the seat 3 may smoothly run on the surface thereof.

As shown in FIGS. 11 and 12, the seat winding attachment biasing device 50 includes a constant torque spring 52 and a first and second constant torque spring 52 in a case 51.
It has 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 by the upper part of the case 51 with respect to the first take-up shaft 53, and the shaft 54a is fixed to the one rotating shaft 44a of the sheet take-up shaft 44 by a coupling 55 so that the take-up shaft 54 cannot rotate. While being connected, the radius of the winding portion 54b is larger than the free winding radius of the constant torque spring 52. The first winding shaft 53 is attached to the winding portion 54b of the second winding shaft 54.
The one end of the constant torque spring 52 wound around is fixed with screws 56, 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). When the sheet is rewound, the sheet take-up shaft 44 is provided with a rotational urging force in the sheet take-up 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 the filter frame 2 is rotated around the axes of the grips 2a, 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 a filter plate 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 a substantially central portion of the main pillar 8 in the vertical direction, and a pair of feed pistons 6 and 7 are arranged below the box body 74 and adjacent in the front-rear direction.
The feed portions 6a, 7a are fixed to the tips of the piston rods 6b, 7b of the feed pistons 6, 7, and the feed portions 6a, 7a are inserted into the pair of vertical grooves 74a, 74a extending in the vertical direction from the filter plate 1 and the filtration plate. It projects toward the frame 2 and is vertically movable within a predetermined range within the vertical grooves 74a, 74a. The feeding portions 6a, 7a are located 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, 2a. It is designed to be moved in.

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

In the seat tilt drive mechanism, a pair of tilt drive chains 18 are provided inside the support channels 17 arranged at positions lower than the lower ends of the filter plates 1 and the filter frames 2 on both sides and along the front-rear direction. The sprocket 20 is stretched between the sprockets 20, and one sprocket 20 on one side is connected to a tilt drive motor 21 via a belt 22. Further, between the sprocket 20, 20 on the motor side of the pair of sprocket 20, 20 on both sides facing each other, the rotary shaft 2 is interposed via an intermediate bearing 24.
5 and the motor 21 drives one of the sprockets 20, 20 to rotate, the other of the sprockets 20, 20 also rotates.
It is adapted to rotate synchronously by 5. An inverted L-shaped tilting claw 19 is locked to the upper part of the tilting drive chain 18 between the sprockets 20, 20 on each side, and the tilting claw 19 is attached to each end of the seat suspension rod 30. It can be locked to. 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 first, second,
As shown in FIG. 3, it has the following configuration. That is, a feed channel 14 having a U-shaped cross section is arranged on each of the lower side portions between the front and rear stands, respectively, and a rail 15 is arranged on the upper surface of the channel 14,
A pair of front and rear moving rollers 1 supported above by bearings 11, respectively.
6,16 run. The pair of front and rear bearings 11 and 11 are connected to each other by a connector 12, and the connector 12 is connected to the channel 14
It is locked to the drive chain 13 arranged inside. The drive chain 13 is connected to sprockets (not shown) arranged on the front and rear stands, respectively, and when one of the sprockets is driven by a drive motor (not shown), the drive chains 13, 13 on both sides rotate in synchronization with each other. The tools 12, 12 are moved back and forth, and the moving device 9 is moved back and forth by the moving rollers 16 ,.

According to the above configuration, when performing the filtration, the filter plate 1 and the filter frame 2 are fastened to the front stand side by the movable plate 71, and the stock solution is supplied into the filter frame so that the space between the filter frame 2 and the filter plate 1 is removed. 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 feeding portions 6a, 7a of the feeding member 5 are located in the upper position above the grips 1a, 2a where they are not engaged, and 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 the two 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, when the seat suspension rod 30 is located at the lower end position below the seat tilt rod 45, the tilt drive motor 21 is driven to rotate the chains 18 and 18, and the chain line II in FIG. As shown by the solid line in FIG. 15, the inclined claws 19, 19 move rearward so that the respective ends of the seat suspension rod 30 enter the inclined claws 19, 19, and the inclined claws 19, 19 are inserted. At the same time, the seat suspension bar 30 moves rearward, and the seat 3 tilts with respect to the seat tilt bar 45. At this time, the filter frame 2 holds its handle as the seat 3 tilts.
Slightly inclined around the axes of 2a and 2a. Then, when the tilting drive piston 40 is driven and the upper end of the filter frame 2 is tapped (see the chain line III in FIG. 2 and the chain line in FIG. 15), the cake 70 in the filter frame 2 remains on the sheet 3. Then, the sheet is discharged along the sheet 3 while sliding downward, and 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
The contact portion 70a of 0 is returned to the original non-driving position, the tilt drive motor 21 is rotated in the reverse direction, the tilt pawls 19 and 19 are advanced by the chains 18 and 18, and the seat suspension rod 30 is moved to the original lower end position. The seat 3 is returned to the lower end position where it 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. After that, with the handle 2a of the filter frame 2 being sandwiched between the two feeding portions 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, 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 a position where the rear side feeding portion 7a comes into contact with the handle 1a of the filter plate 1. Then, the front feeding section 6a is lowered to the lower position, the handle 1a is sandwiched between the two feeding sections 6a, 7a, and then 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 filter frame 2 is tapped and tilted by the tilt drive piston 40 to drop the cake 3 from the inside of the filter frame and discharge the cake. You can Therefore, the filter frame 2 can be tilted by the tilt drive device while being stably supported with respect to the side beams 4, 4, and the filter frame 2 is not tilted by the filter cloth or the like, but the tilt drive piston 40 Thereby, the filter frame 2 can be more surely inclined. Further, when the filter frame 2 is tilted, after the cake discharge sheet 3 is tilted and arranged below the filter frame 2,
When the filter frame 2 is tapped and tilted by the tilt drive piston 40, the seat 3 tilted along the tilt angle of the filter frame 2
It can be dropped with the shape almost the same as the shape held in the filter frame above, and cake 7
0 is discharged while being guided further downward. Therefore, by using the sheet 3 as described above, the cake 70 can be recovered from the inside of the filter frame 2 through the sheet 3 with almost no shape loss.

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. In addition, the tilt drive piston 4
0 is not limited to one that drives the upper end of the filter frame 2 which is inclined to some extent, and the piston 40 can be moved from the state in which the filter frame 2 is not inclined and is located along the vertical direction (see the solid line I in FIG. 2). You may drive so that it may incline to a predetermined angle.
The moving device 9 may be manually moved back and forth. Further, the cake 70 is discharged from the inside of the filter frame 2 while retracting the filter plate 1 and the filter frame 2 to the rear stand side, but once the filter frame 2 and the filter plate 1 are retracted 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 respectively a front view, a side view and a plan view 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
The drawings are a front view and a cross-sectional side view of the clutch mechanism, respectively.
FIG. 10 is a front view, a cross-sectional side view and a cross-sectional plan view of the feeding member, respectively, 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 ... Feed member, 6, 7 ... Feed piston, 6a,
7a ... Feeding unit, 8 ... Main column, 9 ... Moving device, 10 ... Main column driving 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 ... Rotating shaft, 30 ... Seat suspension rod, 31
... lower plate, 40 ... inclined drive piston, 41 ... stand, 42 ... upper plate, 43 ... drive motor, 44 ... sheet winding shaft, 45 ... sheet inclined rod, 46 ... bearing, 47 ... first connecting member, 48 ...
2nd connection member, 49 ... Belt, 50 ... Sheet winding attachment device, 51 ... Case, 52 ... Constant torque spring, 53, 54 ... 1st and 2nd winding shaft, 55 ... Coupling, 56 ... Screw, 7
0 ... cake, 71 ... movable plate, 72 ... driving shaft, 73 ... rotating shaft, 74 ... box, 76,77 ... stand, 78 ... water avoiding plate, 80 ...
Filter cloth, 81 ... sprocket.

Claims (1)

[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) is released and each feed piece (6a, 7a) is a handle for each filter frame (2) and each filter plate (1).
When engaged with (2a, 1a), the pair of feed pieces (6a, 7a) are integrally moved in the front-rear direction to move each filter frame (2) and each filter plate (1) one by one in the front-rear direction. A feed member (5) to be moved, and a tilt drive device (40) for tilting the filter frame (2) at a predetermined position.
And a filter press characterized by including.