JPH0356766B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to a filter press in which a filter holding member is suspended between filter cloths disposed on both sides of a filter plate through the filter cloths. The present invention relates to a gap holding device for a filter press in which a gap is held between the pair of filter cloths by the gap holding member for a predetermined period of time.

Conventional technology Conventionally, the gap between the filter cloths of this type of filter press was
Holding devices of various structures are known. For example, a filter plate may be constructed from only a frame body, a gap holding member may be fixed to a predetermined location of a filter cloth located on both sides of the filter plate, and the gap may be held between adjacent filter plates via a pair of filter cloths. There is a structure in which the members are butted against each other to form a certain distance between the filter cloths on both sides of the filter plate.

Problems to be Solved by the Invention However, in the structure described above, since the holding member is fixed to the filter cloth, it cannot be removed, and the height of the holding member changes depending on the filtration pressure. There was a problem that the shape and material could not be replaced.

Therefore, an object of the present invention is to solve the above-mentioned problem, and to solve the above problems, it is an object of the present invention to provide a filter cloth between filter presses that allows the height, shape, material, etc. of the holding member to be easily replaced as necessary. The purpose of the present invention is to provide a time-holding device.

Means for Solving the Problems In order to achieve the above object, the present invention is configured such that the filter holding member is detachably suspended and supported at a predetermined location around the stock solution supply port of the filter plate. That is, filter cloths are arranged on both sides of a filter plate made of a frame, and a holding member is inserted into the frame of the filter plate with the filter cloth interposed between the two filter cloths on both sides of the filter plate. Suspended and supported so that it is located in the filtration space of
In the filter cloth gap holding device of the filter press, which maintains a certain period of time between the coatings on both sides of the filter plate, the gap holding member is arranged around the raw solution supply port of the filter cloth. The filter is configured to include a connecting part that is removably suspended at a predetermined location, and a protruding part that is disposed at a predetermined location of the connecting part and maintains a predetermined gap between the pair of filter cloths.

In the above configuration, the connecting portion has a through hole that communicates with the stock solution supply port of the filter cloth, and a portion around the through hole is detachably connected to a portion surrounding the stock solution supply port of the filter cloth. It can also be configured so that

Further, in the above configuration, the connecting portion may be configured to have a cut portion around the through hole for inserting the filter cloth into the through hole.

Furthermore, in the above configuration, while the holding member is suspended and supported within the filtration space of the filter plate, the protrusion of the holding member and the holding member are suspended and supported within the filtration space of the filter plate adjacent to the filter plate. The protrusions may also be configured to face each other via a pair of filter cloths between the two filter plates.

Effect of the Invention In the above configuration, the connecting portion is removably suspended and supported at a predetermined location around the stock solution supply port of the filter cloth, and the protruding portion is disposed in the filtration portion around the stock solution supply port of the filter cloth. do. When replacing the holding member as necessary, for example depending on the filtration pressure,
The connecting portion is pulled out from around the stock solution supply port of the filter cloth, the holding member is removed from the filter cloth, and the holding member is attached to the filter cloth instead for a desired period of time. Also, when the retaining member is not needed, it is removed from the filter cloth.

Effects of the Invention According to the above structure, the gap holding member is removably suspended and supported at a predetermined location around the stock solution supply port of the filter cloth to support the protrusion, so that 〓The holding member can be easily attached and detached, and can be used as needed. 〓Remove the holding member from the filter cloth and perform filtration without attaching the holding member, or while it is attached to the filter cloth〓 The holding member can be replaced with a holding member having a different material, height dimension, shape, etc. of the protrusion. Also, between
Since it is not necessary to form the holding member directly on the filter cloth or filter plate, the structure of the filter cloth and filter plate is simplified and manufacturing becomes easier.

Furthermore, by arranging the protrusions of the holding members so as to face each other, it is possible to effectively prevent the filter cloth from becoming unbalanced within the filtration space within the frame of the filter plate due to the supply pressure of the stock solution, etc. .

Examples Examples according to the present invention will be described in detail below with reference to FIGS. 1 to 9.

The holding device between the filter cloths of the filter press according to this embodiment is as shown in FIGS.
The filter cloth 3 formed in the center of the filter plate 2 consisting of a is removably attached to a predetermined location around the stock solution supply port 3a.
When the holding member 1 is suspended and the filter plates 2, . ,1
The configuration is such that a and 1b form 〓 for a certain period of time.

The holding member 1 is made of a molded article of hard synthetic resin, for example polypropylene resin. Between the above-mentioned holding member 1 is not limited to the above-mentioned resin.
It may be made of hard rubber, polyethylene resin, polystyrene resin, vinyl chloride, or the like. In addition, the holding member 1 may be made of metal, but since there is a risk of damaging the filter cloth if it is made of metal,
Hard synthetic resin is preferable to metal.

The holding member 1 includes a pair of truncated conical protrusions 1a and 1b, and a connecting plate 1d serving as a connecting portion on which both the protrusions 1a and 1b are arranged.

The connecting plate 1d is made of an integrally formed plate having a circular upper part and a rectangular lower part, and has a through hole 1c connected to the stock solution supply port 3a of the filter cloth 3 in the center of the upper part. do. This through hole 1
A cut portion 1e that is cut diagonally with respect to the thickness direction of the connection plate 1d is formed in the annular peripheral portion of the connection plate 1b forming the connection plate 1b. Therefore, when the pair of filter cloths 3, 3 on both sides of the filter plate 2 are connected around the undiluted solution supply port 3a, the notch 1e is forcibly opened to supply the undiluted solution to the filter cloth 3. The part around the opening of the filter cloth 3 is inserted into the through hole 1c, and after insertion, the elastic force of the connecting plate itself returns the notch part 1e to its original closed state, thereby connecting the part around the stock solution supply port of the filter cloth 3. It is located in the through hole 1c of the plate 1d. Therefore, the connection plate 1d is suspended around the stock solution supply port 3a with the surrounding portion of the stock solution supply port 3a of the filter cloth 3 fitted into the through hole 1c.

Further, the protrusions 1a and 1b are attached below the through hole of the connecting plate 1d. Above protrusion 1
In FIG. 1, the lower protrusion 1b protrudes from the surface of the connecting plate 1d more than the upper protrusion 1a, and its diameter is also larger. Each of the protrusions 1a and 1b has a protrusion 1f having a semicircular longitudinal section formed on its back surface, for example, on the upper surface side, and a recessed portion having a semicircular longitudinal section on its lower surface.
1g, and the fitting holes 1h, 1h of the connecting plate 1d.
On the other hand, the protrusions 1 of the protrusions 1a and 1b from both sides
f, 1f and the protrusions 1a, 1b are protrusions 1f, 1 on the back side of the protrusions 1a, 1b whose phases are upside down.
f respectively, and insert each protrusion 1f into protrusions 1a and 1b.
are fitted into the respective recesses 1g on the back surface of the connecting plate 1d, and both protrusions 1a, 1a and 1b, 1b are removably fixed to the connecting plate 1d. Therefore, when the filter plate 2 is closed, the holding member 1
The upper protruding parts 1a only face each other and do not come into contact with each other, but the lower protruding parts 1b face each other through the filter cloths 3, 3. , 3. That is, in order to form a gap between the filter cloths 3, 3 on both sides of the filter plate 2, the holding member 1 has the protrusions 1a, 1b.
It is sufficient that the upper protruding portion 1a is located between the upper protruding portions 1a and 1a, and the upper protruding portion 1a does not necessarily need to be in contact with the protruding portion 1a. Further, the lower protrusion 1b also has the upper protrusion 1.
Similarly to a, the pair of filter cloths 3, 3 do not have to come into contact with each other at all. Note that the protrusions 1b, 1
In order to ensure the butt between the two protrusions, one of the protrusions 1b of the protrusions 1b, 1b sandwiching the connecting plate 1d is placed in a position opposite to the other protrusion 1b, as shown by the dashed line A in FIG. It is also possible to form it into a truncated cone shape to increase the facing area so that both the protrusions 1b, 1b abut against each other reliably.

According to the above structure, by using the elastic force of the connecting plate itself of the holding member 1, the notch 1e of the connecting plate 1d is opened to open the area around the stock solution supply port where the filter cloths 3, 3 are connected. After inserting into the through hole 1c, the filter cloths 3, 3 are expanded in a predetermined state, and the holding member 1 is inserted into the stock solution supply port 3 between the pair of filter cloths 3, 3 that sandwich the filter plate 2.
The filter holding member 1 is suspended and supported around the filter plate 2 and positioned within the filtering space 2b within the frame 2a of the filter plate 2.
During this time, the filter plate 2,
..., 2, when the mold is closed, a gap is maintained between the pair of filter cloths 3 and 3 on both sides of the filter plate 2 for a certain period corresponding to the height dimensions of the protrusions 1a and 1b, and the filtrate is 〓
Make it easier to get inside. At this time, between the adjacent filter plates 2, 2, the protrusions 1a, 1b of the holding member 1 are opposed to each other via the pair of filter cloths 3, 3 while suspended and supported on each filter cloth 3. Then, each protrusion 1a, 1b contacts the filter cloth 3, 3, and the filter cloth 3,
While the filter cloths 3 are bent toward each other, the portions of the filter cloths 3, 3 that do not contact the protrusions 1a, 1b are opened so as to maintain a gap between them, and the gap is maintained for a certain period of time.

On the other hand, when removing the gap holding member 1 from the filter cloth 3, the gap holding member 1 can be removed from the filter cloth 3 by opening the notch 1e and pulling out the filter cloth 3 inside the through hole 1c.

According to the above embodiment, the holding member 1 is
The area around the stock solution supply port of the filter cloth 3 is inserted into the through hole 1c of the connecting plate 1d through the notch 1e, and the filter cloth 3 is removably suspended and supported, while the filter cloth 3 is connected through the notch 1e. Since the holding member 1 can be removed by removing it from the plate 1d, it can be easily attached to and removed from the filter cloth 3. Therefore, if necessary, for example, depending on the filtration pressure, the holding member 1 can be removed from the filter cloth 3 during the above period.
filtering without attaching it to the filter cloth 3, or attaching it to the filter cloth 3.
While the holding member 1 was attached to the protrusion 1
Between a and 1b with different materials, height dimensions, shapes, etc.
It can be replaced with the holding member 1. Further, since it is not necessary to directly form the spacer holding member 1 on the filter plate 2 or the filter cloth 3, the structures of the filter plate 2 and the filter cloth 3 are simplified and manufacturing becomes easier. In addition, between the above-mentioned intervals, the protrusions 1a and 1b of the holding member 1 are arranged so as to face each other, so that the filter cloths 3, . It is possible to effectively prevent the filter plate from shifting along the thickness direction (filter plate mold closing direction) within the filtering space 2b of the body 2a.

It should be noted that the present invention is not limited to the above embodiments, and can be implemented in various other forms as exemplified below.

For example, the shape of the spacer holding member 1 and the way in which the protrusions 1a, 1b are attached to the connecting plate 1d are not limited to the above shape and configuration, and can be implemented in various ways. That is, as shown in FIGS. 5 and 6, a downwardly extending protrusion mounting groove 5d is formed in the upper part of the approximately rectangular connecting plate 5i of the holding member 5, and a protrusion mounting groove 5d is formed in the lower part of the connecting plate 5i. A protrusion attachment groove 5e extending diagonally downward from above is formed. On the other hand, the protruding part 5a has a substantially cylindrical shape, and has a fitting groove 5g formed in its middle part, and is removably attached by fitting the fitting groove 5g into the edge of the upper mounting groove 5d. . The protruding part 5b, which is larger than the protruding part 5a, has a shape in which two truncated cones are integrally connected, and a fitting groove 5h is formed in the middle part of the protruding part 5b. It fits into the edge of the groove 5e and is removably attached. Connecting plate 5
i is provided with a notch 5f and a through hole 5c like the connecting plate 1d of the holding member 1, and the through hole 5
The projections 5a and 5b are positioned above and below c. In this embodiment as well, the same effects as in the above embodiment can be achieved.

Further, as shown in FIGS. 7 and 8, tightening annular members 7, 7 are attached to the peripheral edges of the stock solution supply ports 3a, 3a of the filter cloths 3, 3 with bolts 8, . Even in the case where the filter cloths 3, 3 are connected, the filter holding member 6 can be detachably attached. That is, the connecting plate 6b of the spacer holding member 6 is composed of an annular upper part having a diameter larger than that of the annular member 7, and a rectangular lower part having an annular trapezoidal protrusion 6a removably attached to both the front and back surfaces. do. This connecting plate 6b
is provided with a through hole 6c having a larger diameter than the annular member 7, and a holding member 6 is inserted between the filter cloths 3, 3.
And between the through hole 6c of the holding member 6 and the filter cloths 3, 3
With the stock solution supply ports 3a and 3a in communication with each other,
When the annular members 7, 7 are connected to both filter cloths 3, 3 by bolts 8, . During this time, when the holding member 6 is to be removed from the filter cloths 3, 3, it can be easily removed by releasing the connection between the two annular members 7, 7. In this embodiment as well, the same effects as in the previous embodiment can be achieved.

Furthermore, as shown in FIG. 9, the present invention is not limited to the above-mentioned square frame-shaped filter plate 2, but the upper part of the frame body 2a is made to protrude upward in an inverted U shape, and the filter cloth 3 is attached to the protruding portion 2c.
It can also be applied to a so-called top-feed type filter plate formed so that the stock solution supply port 3a is located.
That is, the spacer holding member 10 includes a connecting plate 10e consisting of a rectangular connecting plate main body 10f and a connecting band 10d extending upward from the main body 10f, and five protrusions arranged at predetermined intervals on the main body 10f. 10a,
..., 10a is removably attached. The connecting band 10d has a through hole 10c formed at its upper end to be fitted around the stock solution supply port 3a of the filter cloth 3, and a notch communicating with the through hole 10c as in the above embodiment. Form similarly. This embodiment can also achieve the same effects as the above embodiment.
In addition, contrary to the above, the present invention can also be applied to a so-called bottom feed type filter plate 2 in which the lower part of the frame body 2a is made to protrude downward in a U-shape and the stock solution supply port 3a of the filter cloth 3 is located. Needless to say, it can be applied.

Moreover, between the above-mentioned holding members 1, 5, 6, 10, protrusions 1a, 1b, 5a, 5b, 6a, 1
The number, height, shape, etc. of 0a are arbitrary, and each protrusion 1b, 5a, 5b, 6a, 10
A may be made into a hollow body so as to be able to absorb shocks caused when the protrusions 1b, 5a, 5b, 6a, 10a of the holding member 1 come into contact with each other. Further, the protrusion may be provided not only in the vertical direction with respect to the stock solution supply port 3a of the filter cloth 3, but also at any arbitrary location around the stock solution supply port 3a, such as on both sides along the horizontal direction.

In addition, the filter cloth 3 has a plurality of stock solution supply ports 3a,..., 3.
a, and a holding member may be attached to all or part of the stock solution supply port. Furthermore, the protrusions of the spacer holding member may be arranged so as not to face each other.

[Brief explanation of drawings]

Figures 1, 2, 3, and 4 are a front view, a cross-sectional side view, and a cross-sectional side view showing the space between the filter cloths, between the holding devices, and the holding member of the filter press according to an embodiment of the present invention, respectively. Partially cutaway front view and cross-sectional side view of the holding member attached to the filter cloth, Nos. 5 and 6
The figures are respectively related to other embodiments = front view and sectional side view of the holding member, and Figures 7 and 8 are respectively related to still other embodiments = enlarged front view with the holding member attached to the filter cloth FIG. 9 is a front view showing the relationship between the filter holding member and the filter plate according to still another embodiment. Between 1, 3, 5, 6, 10... Holding member, 1
a, 1b, 5a, 5b, 6a, 10a... protrusion, 1c, 5c, 6c, 10c... through hole, 1
d, 5i, 6b, 10e...Connection plate, 1e, 5f
...Notch, 1f...Protrusion, 1g...Recess, 1h
...Fitting hole, 2...Filter plate, 2a...Frame body, 2b...
...Filtering space, 3... Filter cloth, 3a... Stock solution supply port,
5d, 5e...Mounting groove, 5g, 5h...Fitting groove,
7... Circular member, 8... Bolt, 10d... Connecting band, 10f... Connecting plate main body.

Claims (1)

[Claims] 1. Filter cloths 3 are provided on both sides of a filter plate 2 made of a frame 2a.
At the same time, the holding members 1, 5, 6, 10 are placed between the two filter cloths 3 on both sides of the filter plate 2 through the filter cloth 3. In the filter press holding device which is suspended and supported so as to be located in the filtration space 2b, and which maintains a certain distance between the filter cloths 3 on both sides of the filter plate 2, the above-mentioned The holding members 1, 5, 6, and 10 are connected by connecting portions 1d, 5i, 6b, and 1 that are removably suspended from predetermined locations around the stock solution supply port 3a of the filter cloth 3.
0e, and protrusions 1a, 1b, 5a, which are arranged at predetermined locations of the connecting portions 1d, 5i, 6b, 10e and maintain a predetermined distance between the pair of filter cloths 3.
5b, 6a, and 10a. 5b, 6a, and 10a. A holding device between filter cloths of a filter press. 2 The connecting portions 1d, 5i, 6b, 10e are connected to the through holes 1 communicating with the stock solution supply port 3a of the filter cloth 3.
c, 5c, 6c, and 10c, and the portions around the through holes 1c, 5c, 6c, and 10c are removably connected to the portions around the stock solution supply port 3a of the filter cloth 3. A holding device between filter cloths of a filter press according to claim 1. 3 The connecting portions 1d, 5i, 6b, 10e are provided with cuts around the through holes 1c, 5c, 6c, 10c for inserting the filter cloth 3 into the through holes 1c, 5c, 6c, 10c. A holding device between filter cloths of a filter press according to claim 2, wherein the holding device has recessed portions 1e and 5f. 4 While being suspended and supported in the filtering space 2b of the filter plate 2, the protrusions 1a of the holding members 1, 5, 6, 10,
1b, 5a, 5b, 6a, 10a and the filter plate 2
While being suspended and supported within the filtration space 2b of the filter plate 2 adjacent to the protrusion 1 of the holding member 1, 5, 6, 10
a, 1b, 5a, 5b, 6a, 10a are arranged to face each other via a pair of filter cloths 3 between both the filter plates 2. Holding device between filter cloths of filter press.