JPH06154517A - Filter press - Google Patents

Abstract

PURPOSE:To shorten the open frame distance of filter plates and to shorten the length of the whole filter press by dividing the filter plates into a plurality of groups, and placing the other residual group in a closed frame state when any one of the groups is placed in an open frame state. CONSTITUTION:Filter plates 4 are arranged between the front and rear stands 1, 2 and divided into a plurality of groups i. e.,the front group I and the rear group II. The filter plates 4 are clamped in the front stand side by means of a movable plate 13 by a driver 14 for the filter plates. Raw liquid is supplied to filter cloth 5 and filtration is performed. When the filter plates 4 are placed in an open frame state, the movable plate 13 is retreated and the filter plates 4 of the rear group II are retreated by means of plate opening links 18. Open frame distance is held between the respective filter plates 4 by the links 18 and the filter plates 4 are made an open frame state. Further when the filter plates 4 of the front group I are placed in an open frame state, an intermediate plate 6 is retreated and the filter plates 4 of the rear group II are made a closing frame state. Moreover the filter plates 4 of the front group I are made the open frame state by the same operation. Therefore the open frame distance of the filter plates is shortened as the whole filter press.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a filter plate opening frame mechanism in a filter press in which a large number of filter plates are arranged between front and rear stands and tightened by movable plates.

[0002]

2. Description of the Related Art Conventionally, in this type of filter press, a large number of filter plates are arranged between front and rear stands, and while the filter plates are fastened to the front stand side by a movable plate,
After the completion of filtration, the movable plate is moved to the rear stand side, and all filter plates are simultaneously opened as the movable plate retracts via the link mechanism between adjacent filter plates. is there.

[0003]

However, in the structure described above, since a large number of filter plates are connected to each other by the link mechanism and the filter plates are simultaneously opened, the number of filter plates increases. It requires a large open frame distance as much as possible,
Therefore, there is a problem that the length of the entire filter press becomes long. Therefore, an object of the present invention is to solve the above problems, and to provide a filter press in which the length of the entire filter press can be reduced by reducing the open frame distance of the filter plate.

[0004]

In order to achieve the above object, the present invention divides the filter plate into a plurality of groups, and when any one of the groups is open, the other remaining groups are closed. To configure. That is, a plurality of filter plates arranged between the front and rear stands and divided into a plurality of groups, a filter cloth arranged between each adjacent filter plates, and an intermediate plate arranged between the plurality of groups,
An intermediate plate drive device for moving the intermediate plate in the front-rear direction, a filter plate drive device for tightening all the filter plates to the front stand side via a movable plate, and a filter plate corresponding to each filter group and each filter group. A connecting mechanism for connecting an intermediate plate and a filter plate adjacent to the filter plate so as to maintain an open frame distance; and in each group, located above each side part of the filter plate and installed between front and rear stands and rotatably described above. A filter cloth drive shaft that is supported by the front and rear stands to drive the filter cloths of each group to vertically drive the filter cloths simultaneously and the filter cloth drive shafts of each group to the filter cloth drive shafts of other groups. And a drive shaft drive device that is driven independently of each other, the pair of drive shafts of each group are arranged at substantially the same height above the filter plate, and are arranged with the pair of drive shafts of the other groups. Configure so that the heights are different. In the above structure, the filter cloth is supported by a filter cloth suspension rod, a drive pulley is fitted on each of the drive shafts such that the drive pulley is relatively non-rotatable and slidable in the axial direction, and the filter cloth is attached to the drive pulley. The hanging rod is suspended and supported by a chain, and the filter cloth hanging rod is vertically moved by the rotation of the drive shaft.

[0005]

According to the structure of the present invention, the filter plate is divided into a plurality of groups, and when one of the groups is opened, the other remaining groups are closed, so that the filter plate is opened. It suffices if the frame distance is the open frame distance of any one of the above groups, and the open frame distance can be greatly shortened for the entire filter press. Further, since the number of filter plates for driving the open frame is reduced, the driving force of the filter plate driving device can be reduced and the length of the driving device can be shortened.

This effect will be concretely described with reference to FIG. The filter press at the top of FIG.
, 54 are fastened by a drive device 53 via a movable plate 52, and the open frame distance of each filter plate when the filter plate is opened is defined as the thickness of the filter plate. In this filter press, the filter plate open frame distance increases in proportion to the number of filter plates, and if the ratio of the total length of this filter press is 1,
The total length of the drive device 53 is 1/3. In addition, A shows a filter plate clamped state, B shows a filter plate open frame state. In the middle-stage filter press, drive devices 53a, 53a are arranged on both sides, and
, 54 is tightened by two driving devices 53a, 53a via the two movable plates 52, 52. Although the filter plates 54, ..., 54 are divided into two groups, the total length is the same as that of the uppermost filter press. It has the same length. On the other hand, in the filter press according to the example of the present invention in the lowermost stage, the filter plates 60, ..., 60 are divided into a plurality of groups, and the front stand 61 is driven by the drive device 62 to be filtered by the movable plate 62. While tightening the plates 64, ..., 64, when one of the groups is opened by the thickness dimension of the filter plate, the other group is closed so that the total length of the filter press is the same as that of another conventional filter press. However, the number of filter plates 64 driven by the drive device 63 is also reduced, and the drive device 63 can be reduced to about 1/6.

Further, since the pair of drive shafts of each group are arranged at substantially the same height above the filter plate, and the arrangement height is different from that of the pair of drive shafts of the other groups, the filter is arranged. The installation area of the press does not greatly spread in the lateral direction of the filter plate, and the installation area can be reduced. That is, if the drive shafts of each group are arranged at substantially the same height as the drive shafts of the other groups, it is necessary to arrange the drive shafts in the lateral direction above each side of the filter plate by the number of groups. Although the width of the press becomes larger than the width of the filter plate and the filter press becomes large in size, the present invention can eliminate such a defect.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments according to the present invention will be described below with reference to FIGS.
It will be described in detail based on. As shown in FIG. 1, the filter press according to the present embodiment has a plurality of filter plates arranged between front and rear stands 1 and 2 and divided into a plurality of groups, for example, a front group I and a rear group II ,. A filter cloth 5 arranged between the adjacent filter plates 4 and 4 and capable of running vertically, an intermediate plate 6 arranged between the plurality of groups, and an intermediate plate drive device 17 for driving the intermediate plate 6. , 4, the filter plates 4 are connected to the front stand via the movable plate 13, the filter plate drive device 14 is provided between the filter plates of the respective groups, the intermediate plates 6 corresponding to the groups, and the adjacent filters. A connecting mechanism 18 that connects the plates 4 so as to maintain an open frame distance, and a filter cloth that is arranged in the front-rear direction corresponding to each group and that drives the filter cloths 5 of the filter plates 4 of each group to run in unison. Generally configured to include drive shafts 7 and 8 and a drive shaft drive device 24 that drives the filter cloth drive shafts 7 and 8. That. In FIGS. 1 and 2, reference numeral 15 is a stock solution supply pipe, and 16 is a filter plate recovery pipe.

Since each filter plate 4 and each filter cloth 5 have a well-known structure, detailed description thereof will be omitted. Further, the intermediate plate 6 has basically the same structure as the filter plate 4. Below the filter plates 4 and the intermediate plate 6, as shown in FIG. 3, a filter cloth guide roller 19, a known spring device 20 incorporating a filter cloth winding leaf spring, and brackets 4a, 4a, and The filter cloth take-up roller 23 is arranged so that the filter cloth 5 can be wound around the filter cloth take-up roller 23 by driving the spring device 20 through the filter cloth guide roller 19 when the filter cloth 5 travels downward. . In the intermediate plate 6 in FIG. 3, 6c is a U-shaped handle for sliding on the side bar 3, 6d is a stock solution supply port, 6e is a filter bed, 6f is a frame, 6g is a filtrate recovery port, and 6g.
Reference numeral b is a drive shaft support bracket that supports the drive shafts 8 and 9 rotatably and movably in the front-rear direction. Also, FIG.
Then, in most of the filter plates 4, the bracket 4a for supporting the filter cloth take-up roller and the like below them and the drive shaft support bracket 4b above are omitted. In each filter plate 4 of the front group I, only the lower drive shaft 8 is supported by the drive shaft support bracket 4b that is movable in the front-rear direction, but in each filter plate 4 of the rear group II, the drive shafts on both the upper and lower sides are supported. 7,8
Is supported by a drive shaft support bracket 4b so as to be movable in the front-rear direction. Further, between the filter plates 4 and 4, the open plate links 18 and 1 such as chains on both sides as an example of the connecting mechanism are provided.
When one of the filter plates 4 is connected by 8, the open plate links 18, 18 are tensioned and the other filter plate 4 also moves in the same manner, so that an open frame of a predetermined distance is provided between the filter plates 4, 4. I am able to secure it.

A pair of the intermediate plate driving devices 17 are arranged on both sides and fixed to the outside of the side bar 3. The tip of the piston rod 17a of the drive unit 17 is fixed to a substantially middle portion of a portion of the intermediate plate 6 along the vertical direction of the handle 6c. It moves back and forth according to the guidance of 3. Since the drive devices 17, 17 are provided between the front stand 1 and the intermediate plate 6, the movable plate 13 is retracted to open the filter plates 4, ... By driving the devices 17, 17 in the rearward direction, the intermediate plate 6 is retracted, and the filter plates 4, ..., 4 of the front group I are retracted to open the frame. However, the present invention is not limited to this, and the drive devices 17, 17 may be provided between the intermediate plate 6 and the rear stand 2 to perform the same function. The intermediate plate 6 is the filter plate 4 on the front side thereof, that is, the front group I.
, 4, and the open plate links 18 on both sides, and the filter plates 4 on the rear side of the intermediate plate 6, that is, the rear group I.
The filter plates 4, ..., 4 of I are not connected by the open plate links 18, 18. Therefore, the filter plates 4, ..., 4 of the rear group II
, The intermediate plate 6 does not move, but when the intermediate plate 6 retracts, the filter plates 4, ..., 4 of the front group I retract.

On the other hand, each upper end of the filter cloth 5 has a filter cloth suspension rod 21.
The filter cloth suspension rod 21 is suspended from and supported by the drive pulley 22 at both ends thereof via a chain or the like. Each pulley 22 has a drive shaft 7 having a hexagonal cross section,
8 is fitted in the shaft 8 so as to be slidable in the axial direction and non-rotatable in the rotation direction, and the filter cloth 5 is vertically moved by winding or unwinding the chain by the rotation of the drive shafts 7 and 8. I am trying. The lower drive shaft 8 of the two drive shafts 7 and 8 extends between the front and rear stands 1 and 2 and extends from the intermediate plate 6 to the front plate side filter plates 4 ,. The upper and lower drive shafts 7 extend between the intermediate plate 6 and the rear stand 2 and are used to vertically move the filter cloths 5, ... , ..., 4 for moving the filter cloths 5, ..., 5 up and down. Bevel gears 9, 10 and 11, 12 are provided at the rear ends of the drive shafts 7, 8.
Is connected to the motor 24 via. This motor 24
Although not specifically shown, two are provided to drive the drive shafts 7 and 8, respectively, and they are driven independently. However, it is also possible to selectively drive the two drive shafts 7 and 8 by switching the drive force by one motor with the switching mechanism. The motor may be provided on the front stand side, or may be provided on both the front stand 1 and the rear stand 2. Further, both drive shafts 7 and 8 are installed between the front and rear stands, or the lower drive shaft 7 is extended only between the front stand and the intermediate plate 6, and the upper drive shaft 7 is arranged in the front and rear. It may be installed between the stands.

According to the above structure, the filter plate driving device 14 drives the movable plate 13 to clamp all the filter plates 4, ..., 4 to the front stand side, and the stock solution is supplied between the filter cloths between the filter plates. Then, filtration is performed as is well known. After the completion of filtration, when opening the filter plate, the movable plate 13 is first moved backward by the drive of the filter plate driving device 14, and the open plate link 18 is attached to the movable plate 13 accordingly.
, 4 of the rear group II connected to each other are retracted, and a predetermined open frame distance is maintained by the open plate links 18 ,. On the other hand, when opening the filter plates 4, ..., 4 of the front group I, the intermediate plate 6 is moved backward by the drive of the intermediate plate drive devices 17, 17, and the filter plates 4 ,. While being in the frame state, the filter plates 4, ..., 4 of the front group I, which are connected to the intermediate plate 6 by the open plate links 18, are retracted and the open plate links 18 ,. When the drive shaft 7 or 8 is rotated by the motor 24 in the open frame state of each filter plate, each filter cloth 5 can be moved vertically.

According to the above embodiment, the filter plates 4, ...
By dividing into one group and closing the other group when one group opens the frame, the open frame distance of the filter plate in the entire filter press can be greatly shortened. Further, since the number of filter plates for driving the open frame is reduced, the driving force of the filter plate driving device can be reduced and the length of the driving device can be shortened. Further, the pair of drive shafts 7, 7 of the rear group are arranged at substantially the same height above the filter plate 4 and are arranged at a different height from the pair of drive shafts 8, 8 of the front group. Therefore, the installation area of the filter press does not greatly spread in the lateral direction of the filter plate 4, and the installation area can be reduced. That is, when the drive shafts 7, 7 of the front group are arranged at substantially the same height as the drive shafts 8, 8 of the rear group, it is necessary to dispose two drive shafts in the lateral direction above each side of the filter plate. However, the width of the filter press becomes larger than the width of the filter plate, and the filter press becomes large in size. However, in this embodiment, such a defect can be solved.

The present invention is not limited to the above embodiment, but can be implemented in various other modes. For example,
If the filter plates 4, ..., 4 are divided into three or more groups, the intermediate plates are arranged between adjacent groups, and a drive device for driving the intermediate plates is provided, the same effect as described above can be obtained. be able to. Further, the intermediate plate 6 may be a simple plate instead of the filter plate.

[Brief description of drawings]

FIG. 1 is a side view of a filter press according to an embodiment of the present invention.

FIG. 2 is a plan view of the filter press of the above embodiment.

3 is a sectional view taken along line XX of FIG.

FIG. 4 is an explanatory diagram showing a relationship between two conventional filter presses and an example of the present invention.

[Explanation of symbols]

1 ... Front stand, 2 ... Rear stand, 3 ... Sidebar, 4
... filter plate, 5 ... filter cloth, 6 ... intermediate plate, 7, 8 ... drive shaft, 9,
10, 11, 12 ... Bevel gear, 13 ... Movable plate, 14 ... Filter plate drive device, 15 ... Stock solution supply pipe, 16 ... Filtrate recovery pipe, 17
... intermediate plate drive device, 18 ... open plate link, 19 ... filter cloth guide roller, 20 ... spring device, 21 ... filter cloth suspension rod, 22 ... drive pulley, 23 ... filter cloth take-up roller, 24 ... motor,
I ... front group, II ... rear group.

Claims (2)

[Claims] 1. A plurality of filter plates (4) arranged between the front and rear stands (1, 2) and divided into a plurality of groups, a filter cloth (5) arranged between each adjacent filter plates, and the plurality of the filter plates (5). And an intermediate plate drive device (1) for moving the intermediate plate in the front-back direction.
7), a filter plate driving device (14) for tightening all the filter plates to the front stand side via a movable plate (13), an intermediate plate between the filter plates of each group, and an intermediate plate corresponding to each group, and adjacent thereto. A connecting mechanism (18) for connecting so as to maintain an open frame distance between the filter plates, and the front and rear stands located above the respective side parts of the filter plates in each group and erected between the front and rear stands and rotatably. The filter cloth driving shafts (7, 8) for supporting the filter cloths of the respective groups to drive the filter cloths of the respective groups to run vertically in unison with each other. Drive shaft drive device (9, 10, 11, 12, 24) that is driven independently of the cloth drive shaft
And a pair of drive shafts of each group are arranged at substantially the same height above the filter plate, and the arrangement height is different from the pair of drive shafts of the other groups. Filter press to do. 2. The filter cloth is supported by a filter cloth suspension rod (21), and a drive pulley (22) is fitted to each of the drive shafts such that the drive shaft is relatively non-rotatable and axially slidable. The filter press according to claim 1, wherein the filter cloth suspension rod is suspended and supported by a drive pulley by a chain, and the filter cloth suspension rod is moved up and down by rotation of a drive shaft.