JP3387619B2 - Filtration machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter-press type filter, and more particularly to a filter which can perform a filtering operation and a cake discharging operation in parallel.

[0002]

2. Description of the Related Art Conventionally, in a filter provided with a double filter press, a filtering operation and a cake discharging operation are performed separately. Further, in a filter capable of performing a filtering operation and a cake discharging operation at the same time, a filter plate body that forms a filter chamber, a tightening plate that is tightened to the filter plate body, and a drive device that drives the tightening plate. There is a problem in that it is necessary to install a plurality of such sets, and the overall structure of the filter becomes large. Further, even in the case of a filter that can perform the filtering operation and the cake discharging operation at the same time, for example, the filtering operation is performed, then the filtering operation is performed on the filtered one, and then the cake discharging of the compressed operation is performed. It does not perform each operation in parallel at the same time, including operations other than the filtering operation and the cake discharging operation, such as performing the operation. Therefore, in the conventional filter, it is not possible to make the ratio of the filtration time as long as possible and to sufficiently perform the dehydration without increasing the total filtration work time from the filtration to the cake discharge. There wasn't. The present invention has been made to solve such problems, and it is a filter having a compact overall structure, and the ratio of the filtration time is made as long as possible in the whole filtration work time from filtration to discharge of cake. The object is to provide a filter to be obtained.

[0003]

SUMMARY OF THE INVENTION The present invention is a frame body that rotates about a central axis of rotation, and is rotated so that it is partitioned into at least two parts that can be selectively positioned at a filtration position and a cake discharge position. And a frame body having a chamber part and a stock solution supply passage formed in the frame part of the frame body and opening to the chamber part, and facing the frame body and not rotating with respect to the frame body to the filtration position. A closing body for closing the chamber located at the filtration position and having a first filtration floor corresponding to the chamber located, and the frame body sandwiched between the blocking body and the frame body; A chamber located in the filtration position that is not rotatable and is movable in the axial direction of the rotation center axis between a tightening position where the frame body is tightened to the closing body and a tightening release position where the tightening is released. A movable body having a second filtration bed formed to correspond to the first portion, and the first The frame is disposed between the overbed and the chamber located at the filtration position and between the second filtration bed and the chamber located at the filtration position, and is sandwiched between the blocking body and the frame body. A filter cloth that is sandwiched between a body and the movable body and that closes a chamber located at the filtration position together with the first filtration bed and the second filtration bed to form a filtration chamber; In the position, one of the blocking body and the movable body has a cake discharge space, and a filtrate discharge passage opening to at least one of the first filtration bed section and the second filtration bed section is formed. Is characterized by.

[0004]

The frame body is sandwiched between the closing body and the movable body and rotates about the central axis of rotation with respect to the non-rotating closing body and the movable body, and this rotation causes the chamber of the frame body to move to the filtering position. Selectively located at the cake discharge position. Therefore, by supplying the undiluted solution to the chamber of the frame located at the filtration position, the filtration is performed through the filter cloth, and after the filtration is completed, the chamber is rotated to move the chamber where the cake is present to the cake discharge position. The cake can be discharged to the outside from the inside of the chamber where the cake is located. On the other hand, at the time of discharging the cake, the other chamber portion of the frame body is located at the filtration position and filtration can be performed. As described above, the above-described configuration enables the filtration step to be performed without being influenced by the steps other than the filtration step, and the ratio of the filtration time to be as long as possible in the total filtration work time from the filtration to the cake discharge. In addition, since one frame is rotated to perform the above-mentioned action, the whole structure is made compact. The "frame body" corresponds to the "rotating frame" described in the embodiments.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the filter of the present invention will be described below with reference to the drawings. The filter in the first embodiment is generally configured as follows. As shown in FIG. 1, the drive shaft 8
The closing body 2 and the movable body 3 are arranged on both sides of the rotating frame 1 so as to sandwich the rotating frame 1 on the same axis. One end of the drive shaft 8 is connected to a rotating device 9 that rotates the drive shaft 8 in the circumferential direction. Further, in the movable body 3, in the extending direction toward the other end of the drive shaft 8, for example, the tightening device 1 including a hydraulic cylinder.
0 is placed. In the tightening device 10, the tip of the rod 10a is attached to the side surface of the movable body 3 and the rod 10a is moved in the axial direction to tighten the rotary frame 1 to the closing body 2 and the tightening position to release the tightening. The movable body 3 is driven between it and the release position. Further, the closing body 2, the rotating frame 1, and the rotating frame 1
The filter cloth 7 is sandwiched between the movable body 3 and the movable body 3. Further, in the filtering machine of the present embodiment, by rotating the rotary frame 1 by the drive shaft 8, the chamber portion described later provided on the rotary frame 1 is selectively positioned at the filtering position, the pressing position and the cake discharging position. Thus, the filtering operation, the pressing operation and the cake discharging operation can be simultaneously performed in parallel. The rotating frame 1, the blocking body 2, and the movable body 3 will be described below.

As shown in FIG. 3, the rotary frame 1 is a disc-shaped frame body, and the hollow portions are separated from each other by three partition frames 4 provided at 120 ° intervals at the central angle. It has a first chamber part 11, a second chamber part 12, and a third chamber part 13 that penetrate through the rotary frame 1 in the plate thickness direction. In addition, a through hole 1 a that fits into the drive shaft 8 and rotates the rotary frame 1 as the drive shaft 8 rotates penetrates through the center of the rotary frame 1. Therefore, when the rotary frame 1 is rotated by the drive shaft 8 fitted to the rotary frame 1,
Therefore, the third chambers 11 to 13 are sequentially located at respective positions of a filtering position for performing the filtering process, a pressing position for performing the pressing process, and a cake discharging position for performing the cake discharging process. Therefore, each of the first to third chambers respectively performs three functions of filtration, compression, and cake discharge. Further, the frame portion 1b of the rotating frame 1
In addition, the undiluted solution supply passage 2 communicating with the opening 23 that opens to each chamber of the first chamber 11, the second chamber 12, and the third chamber 13
2 is formed. It should be noted that the rotary frame 1 shown in FIG. 1 is shown by exaggerating the plate thickness dimension.
Has a thickness of about 1/3 in the figure.

As shown in FIG. 2, the closing body 2 is a rectangular plate having a disk-shaped portion similar to that of the rotating frame 1, and the partition frame 4 is provided on the side surface facing the rotating frame 1. Are divided by three partition frames 5 corresponding to
Three concave portions having the same planar shape as the chamber portion, a first filtration bed portion 14, a first compressed filtration bed concave portion 15, and a compressed membrane concave portion 16 are formed. In addition, the 1st filtration bed part 14 is located in the filtration position which performs a filtration process, and the 1st press filtration bed recessed part 15 is provided.
Is located at the squeezing position for performing the squeezing step, and the squeeze film recess 16 is located at the cake discharging position for performing the cake discharging step. In addition, a through hole 2a is formed in the central portion of the closing body 2 in such a size that the drive shaft 8 can freely rotate with respect to the closing body 2. Can be freely rotated. Further, the block body 2 is fixed to, for example, a pedestal or an installation floor by leg portions 106, and the drive shaft 8
It does not rotate together with it, and the closing body 2 is stationary with respect to the rotating frame 1. Further, on the upper part of the closing body 2, there are provided support arms 29 for supporting both ends of the filter cloth hanging rod 27 for supporting the filter cloth 7 suspended by the filter cloth hanging rod 27. The filter cloth 7 is the first filter bed 1
4 and the first pressing / filtering bed recessed portion 15 portion are formed into a planar shape shown in FIG. In addition, in the filter cloth 7, a cut 7a is formed in the penetrating portion of the drive shaft 8
It is easy to attach and detach to and from the drive shaft 8. Also, filter cloth 7
As shown in the figure, a hole 7b for allowing the undiluted solution to pass through without being filtered is formed in a portion corresponding to the undiluted solution passage 21 to be described later.

The filter cloth 7 and the filter surface 14a are provided on the filter surface 14a of the first filter bed 14 in order to prevent the filter cloth 7 from sticking to the filter surface 14a and lowering the filtration efficiency in the filtering step. A plurality of protrusions 10 for forming a gap between
1 is projected. Further, a portion of the outer periphery of the closing body 2 which is close to the first filtration bed portion 14 is connected to the stock solution supply passage 22 in a direction penetrating the plane of the drawing so as not to leak liquid. An undiluted solution passage 21 is provided. In addition, a filtered liquid discharge passage 2 for discharging the filtered liquid, which is obtained by filtering the undiluted liquid through the filter cloth 7, to the outside at the lower end portion in the vertical direction of the first filtered bed portion 14.
4 is formed through the closure body 2.

The cake discharge surface 16 of the squeeze film concave portion 16
At a, a discharge film 102 is provided which is expanded by the supply of compressed fluid such as air, water, or N ₂ gas and expands into the chamber of the rotary frame 1 located at the cake discharge position. still,
The periphery of the discharge membrane 102 is fixed to the squeeze membrane concave portion 16. In addition, the discharge film 10 is provided around the discharge film 102.
When the film 2 is expanded, the compressed film surface and, for example, the compressed film concave portion 16
The folds are formed so as to form an appropriate gap without making close contact with the inner surface of the. As the material of the discharge membrane 102, polypropylene, polyethylene, polyamide resin, or the like can be used, and other synthetic resin material mixed with a reinforcing material or the like can also be used. The discharge film 102 is attached according to the dimension of the rotary frame 1 in the plate thickness direction, that is, the depth of the chamber of the rotary frame 1, and the hardness and adhesiveness of the cake. Further, the discharge membrane 102 is, as shown in the figure, the folded portion 10 when the compressed fluid is not supplied.
2a is accommodated in the compressed film recess 16 in a folded state, and the folded portion 10 is supplied by the supply of compressed fluid.
2a swells and releases the supply passage of the compressed fluid, so that the elastic restoring force of the discharge membrane 102 restores the original state. In addition, in order to penetrate the block body 2 in the plate thickness direction and to expand and contract the discharge film 102, a compressed fluid is supplied between the cake discharge surface 16a and the discharge film 102,
A passage 33 is formed for discharging.

When the compressed fluid is supplied to the first pressing / filtering bed recessed portion 15, the squeezing film 103 swells to the chamber portion located at the squeezing position in the rotary frame 1 adjacent to the closing body 2.
Is stored. The squeeze film 103 is the discharge film 1 described above.
The same shape and operation as 02 are performed. However, the compressed film 103 is different from the discharge film 102 in that a plurality of protrusions 104 having the same function as the protrusion 101 are formed on the surface of the compressed film 103 that comes into contact with the filter cloth 7 due to the expansion. The projection is not limited to the cylindrical shape as shown in the figure, but may be a rectangular shape extending in the vertical direction as shown in FIG. 10, for example. Further, in order to squeeze the squeezing body 2 through the squeezing body 2 in the plate thickness direction to expand and contract the squeezing membrane 103, supply and discharge of a compressed fluid between the first squeezing filter bed recess 15 and the squeezing membrane 103 A passage 105 for performing the above is formed. Further, in the lower end portion in the vertical direction of the first squeezed filter bed concave portion 15, the squeezed filtered liquid discharge passage 3 for discharging the filtered liquid from the first squeezed filter bed concave portion 15 to the outside is provided.
2 are formed through the closure body 2. Further, when the first chamber portion 11 of the rotary frame 1 is located at the squeezing position, the rotary frame 1 is formed on the rotary frame 1 at the outer peripheral portion of the closing body 2 and in the vicinity of the first squeezing filter bed recess 15. A closing packing 107 for closing the undiluted solution supply passage 22 is attached to a portion corresponding to the undiluted solution passage 21.

As shown in FIG. 4, the movable body 3 is a rectangular plate having the same disk-shaped portions as the rotary frame 1 and the closing body 2. For the second filter bed 17 and the second filter bed 17 which are partitioned by three partition frames 6 corresponding to the partition frame 4 and have the same planar shape as the first to third chamber parts 11 to 13 of the rotary frame 1. Recess 18,
A cake discharge port 19 is formed. The second filtration bed portion 17 is located at a filtration position where the filtration step is performed, the second pressing filtration bed recess 18 is located at a compression position where the compression step is performed, and the cake outlet 19 is a cake where the cake ejection step is performed. It is located at the discharge position. The cake discharge port 19 penetrates the movable body 3 in the plate thickness direction of the movable body 3. In addition, the movable body 3
Similarly to the closure body 2, a support arm 29 for supporting both ends of the filter cloth hanging rod 27 is also provided on the upper part of the above so as to support the filter cloth 7 suspended by the filter cloth hanging rod 27. The filter cloth 7 is composed of the second filtration bed portion 17 and the second squeezing filtration bed recess portion 1
It has a planar shape shown in FIG. 5 so as to cover eight portions. Further, the movable body 3 is fitted to the center of the movable body 3 so that the movable body 3 can be moved slightly in the axial direction of the drive shaft 8, and the drive shaft 8 can freely rotate with respect to the movable body 3. . Therefore, the movable body 3 does not rotate together with the drive shaft 8, and thus the movable body 3 is stationary with respect to the rotating frame 1.

The filter surface 17a of the second filter bed portion 17 has a filter surface 1 of the first filter bed portion 14 of the above-described block body 2.
Similarly to 4a, the protrusion 101 is provided in a protruding manner. In addition, when, for example, the first chamber portion 11 of the rotary frame 1 is located at the filtration position,
The stock solution passage 2 formed in the rotary frame 1 in the outer peripheral portion of the movable body 3 and in the vicinity of the second filtration floor portion 17
A closing packing 107 for closing the stock solution supplied to the stock solution supply passage 22 is attached to the portion corresponding to 1. Further, a filtered liquid discharge passage 25 for discharging the filtered liquid from the second filtered bed portion 17 to the outside is formed at the lower end of the second filtered bed portion 17 in the vertical direction so as to penetrate the movable body 3. .

A plurality of protrusions 104 having the same function as the protrusions 101 are formed on the surface of the second press-filtration bed recessed portion 18.
Is projected. Further, a compressed filtrate discharge passage 26 for discharging the filtrate from the second pressed filter bed recess 18 to the outside penetrates the movable body 3 at the lower end in the vertical direction of the second pressed filter bed recess 18. Formed. Also, the rotating frame 1
For example, when the first chamber portion 11 is located at the squeezing position, the stock solution passage is formed on the rotary frame 1 at the outer peripheral portion of the movable body 3 and in the vicinity of the second squeezing filter bed concave portion 18. A closing packing 107 for closing the stock solution supply passage 22 is attached to a portion corresponding to 21. still,
The second squeezing filter bed recess 18 may also be provided with the squeeze film provided in the first squeezing filter bed recess 17.

The operation of the filter of the first embodiment constructed as above will be described below. The filter cloth hanging rod 27 is supported by the support arms 29 of the closing body 2 and the movable body 3, respectively, and the filter cloth 7 suspended on the filter cloth hanging rod 27 is closed between the closing body 2 and the rotary frame 1. And between the rotary frame 1 and the movable body 3, respectively. By installing the filter cloth 7 in this way, the filter cloth 7 is provided with the first filter bed portion 14 and the first squeezing filter bed recess 15 of the closing body 2 and the movable body 3.
The second filtration bed 17 and the second squeezing filtration bed recess 18 are covered. Further, the strings 129 provided on the left and right of the lower end of the filter cloth 7 are attached to the filter cloth stop pins 3 fixed to the closing body 2.
The filter cloth 7 is prevented from moving unnecessarily by tying it to the filter cloth fixing pins 31 fixed to 0 and the movable body 3, respectively.

After mounting the filter cloth 7, for example, the first chamber portion 11 of the rotary frame 1 is positioned at the filtering position, and the tightening device 10 is driven to push the movable body 3 toward the closing body 2 side and the closing body 2. The filter cloth 7 is sandwiched between the rotary frame 1 and the rotary frame 1 and the movable body 3, respectively, and the closing body 2 and the rotary frame 1, and the rotary frame 1 and the movable body 3 are closed. Therefore, in this state, the first chamber portion 11 of the rotary frame 1, the first filtration bed portion 14 of the closing body 2, and the movable body 3 are provided.
The second filtration bed portion 17 and the filter cloth 7 form a filtration chamber, and the second chamber portion 12 of the rotary frame 1, the first squeezing portion 15 for the filtration bed of the closing body 2 and the second squeezing portion of the movable body 3 are formed. A squeeze chamber is formed by the filter bed recess 18 and the filter cloth 7, and is formed in the third chamber 13 of the rotary frame 1, the first squeeze film recess 16 of the closing body 2, and the cake discharge port 19 of the movable body 3. To form a cake discharge part.

In this state, the undiluted solution passage 21 provided in the closing body 2 and the undiluted solution supply passage 22 provided in the rotary frame 1 are connected so as to sandwich the packing and prevent the liquid from leaking. Therefore, by supplying the undiluted solution to the undiluted solution passage 21 of the closing body 2, the undiluted solution is supplied from the opening 23 into the first chamber 11 through the undiluted solution supply passage 22 of the rotary frame 1. The stock solution supplied to the first chamber 11 is filtered by the filter cloth 7 according to the stock solution supply pressure, and the filtered solution is discharged to the outside through the filtered solution discharge passage 24.

When the filtration is completed, the rotating frame 1 is rotated counterclockwise 1/3 in FIG.
Depending on the state in which the movable body 3 is narrowed by 0,
Move it in the opposite direction by about mm. Then, the rotating device 9 is driven to rotate the drive shaft 8, and the rotary frame 1 is moved to the above 1 /
Rotate 3 times. After 1/3 rotation, the closing body 2, the rotary frame 1, and the partition frames 4, 5, 6 of the movable body 3 are polymerized again. Therefore, in this state, the first chamber part 11 of the rotary frame 1 is sandwiched between the first press-filtering bed recess 15 of the closing body 2, the second press-filtering bed recess 18 of the movable body 3, and the filter cloth 7, Second of rotating frame 1
The chamber 12 includes the squeeze film recess 16 of the closing body 2 and the movable body 3.
Located in the cake discharge port 19 of the third frame 13 of the rotary frame 1.
Is sandwiched between the first filter bed portion 14 of the block body 2, the first filter bed portion 17 of the movable body 3, and the filter cloth 7. Then, the tightening device 10 immediately moves the movable body 3 in the tightening direction, and tightens similarly.

Similarly, again, the stock solution passage 2 of the block body 2
The stock solution is supplied to No. 1 and the stock solution is supplied into the second chamber 12 for filtration. On the other hand, along with this filtering operation, compressed fluid, for example, compressed air is supplied to the passage 105 for supplying and discharging compressed fluid in the first pressing / filtering bed recess 15 of the closing body 2,
The squeeze film 103 provided in the squeeze filter bed recess 15 is expanded to the first chamber portion of the rotary frame 1 and the filter cake in the first chamber portion is squeezed through the filter cloth 7. The compressed filtrate is discharged to the outside through the compressed filtrate discharge passages 25 and 32.

When the squeezing operation and the filtering operation are finished, the tightening of the movable body 3 is loosened just as in the case described above, and the rotary frame 1 is rotated.
Is further rotated counterclockwise by 1/3 and the movable body 3 is tightened again. By doing so, the first chamber portion 11 of the rotary frame 1 that has undergone the filtering and squeezing operations is moved to the cake discharge position, and the second chamber portion 12 is moved.
Is located at the filtering position, and the third chamber 13 that has performed the filtering operation is located at the squeezing position. By supplying, for example, compressed air to the passage 33 for supplying compressed fluid in the closing body 2,
The discharge membrane 102 provided in the squeeze membrane concave portion 16 expands toward the first chamber portion 11 side of the rotary frame 1. Therefore, the compressed cake in the first chamber 11 is discharged to the outside through the cake discharge port 19 of the movable body 3 due to the expansion of the discharge membrane 102.

At the time when the discharge, squeezing and filtering operations of the cake are completed, the tightening of the movable body 3 is once loosened and the rotary frame 1 is further rotated counterclockwise one third as in the above case, and the movable body is again rotated. Tighten 3. By doing so, the first chamber portion 11 of the rotary frame 1 that has undergone the operations of filtering, squeezing, and discharging cake is returned to the filtering position, and the second chamber portion 12 that has undergone the filtering operation is moved to the squeezing position. The performed third chamber 13 is positioned at the cake discharge position, and the filtration process is performed again in the first chamber 11. Other second and third chamber parts 12, 1
In 3, the respective operations of squeezing and cake discharge are performed.

As described above, in the filter of this embodiment, one rotating frame 1, one rotating device 9, and one tightening device 10 are provided.
With the configuration including, it is possible to perform each operation of filtering, squeezing, and cake discharging in parallel, and as is apparent from the above-described configuration, by providing a plurality of sets of filters having the same configuration, multiple operations can be performed in parallel. The configuration of the entire device can be made more compact than that of the conventional filter machine.

Further, since the pressing operation and the cake discharging operation have a shorter execution time than the filtering operation, the cake discharging operation and the pressing operation can be performed in a part of the time during the filtering process. It is possible to take a sufficiently long time for performing the filtering operation in all the steps of (3) and also take a sufficient dehydration time. Of course, the cake discharging operation and the pressing operation can be performed at the same time as the filtration step time.

Second Embodiment: The filter in the first embodiment is of a type that performs three steps of filtration, squeezing and cake discharge, but the filter in the second embodiment performs two steps of filtration and cake discharge. 9 to 13 shows the structure of the filter of the second embodiment. 9 to 13, the parts having the same functions and operations as those of the filter of the first embodiment shown in FIGS. 1 to 5 have some differences in shape, but the same reference numerals are used. The description thereof is omitted unless otherwise specified.

As is apparent from FIG. 9, the overall structure of the filter of the second embodiment is the same as that of the filter of the first embodiment described above. Since the filter of the second embodiment is a type that performs two steps of filtration and cake discharge, the rotary frame 1,
The closing body 2 and the movable body 3 are provided with partition frames 4, 5 and 6 in a direction of 180 degrees at a central angle. Also, filter cloth 7
Has a rectangular planar shape as shown in FIG. 13 so as to cover the first filtration bed portion 14 of the block body 2 and the second filtration bed portion 17 of the movable body 3. In the second embodiment, the first filtration bed 14 and the second filtration bed 17 have a plurality of protrusions 110 having a rectangular planar shape extending in the vertical direction.
Is projected.

The operation of the filter of the second embodiment thus constructed is the same as that of the first embodiment except that the rotation of the rotary frame 1 is 1/2 the rotation of the first embodiment. Since the operation is the same as the operation, the description thereof will be omitted.

As yet another modified example, it is a view showing only the rotating frame, but as shown in FIGS. 15 and 17, in addition to the steps of filtering, squeezing, and cake discharging, further steps can be performed. Other types of filters are also conceivable. The overall configuration of the device can be the same as that of the first embodiment.
In the filter equipped with the rotating frame shown in FIG. 15, filtration, squeezing,
It is of a type that performs four steps of cake washing and cake discharge, and accordingly, the rotary frame 1 is divided into four chambers by four partition frames each having a central angle of 90 degrees. Incidentally, the cake washing is a step of washing the cake in order to reduce the concentration of the stock solution contained in the cake, after filtering and pressing to sufficiently filter the necessary filtrate. The blocking body 2 and the movable body 3
Corresponding to the respective positions of filtration, squeezing, cake washing, and cake discharge, the closing body 2 corresponds to the closing body described in the first embodiment, and further corresponds to the cake washing chamber portion of the rotating frame 1. As a result, a first cake-cleaning filter bed portion for closing the cake-cleaning chamber portion is formed. In addition to the movable body described in the first embodiment, the movable body 3 is formed at the cake washing position so as to correspond to the cake washing chamber portion, and includes the first cake washing filter bed portion and the cake washing chamber portion. A blocking second cake wash filter bed is formed. Further, it is arranged between the first cake washing filter bed section and the cake washing chamber section and between the second cake washing filter bed section and the cake washing chamber section, and is disposed between the blocking body and the frame body. A cake cleaning filter that is sandwiched between the frame body and the movable body and that closes the cake cleaning chamber section together with the first cake cleaning filter bed section and the second cake cleaning filter bed section to form a cake cleaning room. A cloth is provided. Further, a waste liquid discharge passage opening to at least one of the first cake washing filter bed and the second cake washing filter bed is provided. Incidentally, the supply of the cleaning liquid to the cake cleaning chamber portion forms a cake cleaning liquid supply passage opening to the cake cleaning chamber portion, as in the case of the above-mentioned undiluted solution supply,
The cleaning liquid is supplied to the cake cleaning liquid supply passage.

The filter provided with a rotary frame shown in FIG. 17 is of a type that performs six steps of filtration, squeezing, cake washing, blowing, reverse blowing, and cake discharging, and the rotary frame has a central angle corresponding to the six steps. It is divided into 6 chambers by 6 partition frames of 60 degrees each. Blow is a step of performing drying of the washed cake by, for example, supplying compressed air from a blow compressed fluid supply passage opening to the blow chamber portion described below after cleaning the cake. Is a step of drying the cake by supplying, for example, compressed air from a compressed fluid supply passage opening to a reverse blow chamber portion described later after the blowing. The rotary frame 1 is further formed with a blow chamber part and a reverse blow chamber part which are selectively located at the blow and reverse blow positions and which are separated from the above-mentioned four chamber parts and which perform blow and reverse blow. The closing body 2 further includes a rotating frame 1
Corresponding to the blow chamber portion and the reverse blow chamber portion, first and second recesses for closing the blow chamber portion and the reverse blow chamber portion are formed. The movable body 3 is further formed at the blow and reverse blow positions corresponding to the blow chamber portion and the reverse blow chamber portion, and closes the blow chamber portion and the reverse blow chamber portion together with the first and second recesses. Third and fourth recesses are formed. Further, between the first and second concave portions and the blow chamber portion and the reverse blow chamber portion, and between the third and fourth concave portions and the blow chamber portion and the reverse blow chamber portion, and the closing body, It is sandwiched between the frame body and the movable body, and is sandwiched between the frame body and the movable body. The blow chamber part and the reverse blow chamber part are closed together with the first and second recesses and the third and fourth recesses to close the blow chamber part. And a blowing filter cloth forming a reverse blowing chamber. Further, a compressed fluid supply / discharge passage opening to at least one of the first and third recesses and at least one of the second and fourth recesses is provided.

As in the above-described modified example, various steps can be carried out in parallel by providing the rotary frame, the closing body, and the movable body with a chamber portion in addition to filtration and cake discharge as required. . Also, for example, even in the case of the above-described type of filter that performs 6 steps, the apparatus shown in FIG. 1 can be used as the entire apparatus configuration, and the overall apparatus configuration becomes excessively large in proportion to the increase in the number of steps. There is no.

Third Embodiment: A third embodiment will be described with reference to FIGS. 6 to 8. Compared to the first embodiment and the like, the third embodiment has a rotating device for driving a drive shaft installed in a closed body,
In addition, a rotary frame and a movable body are provided on the left and right of the closed body. It should be noted that the number of chambers or the like provided in the rotating frame or the like, in other words, the number of steps can be variously different as in each of the above-described embodiments, but in the third embodiment, it is different from the first embodiment. Similarly, it is a type provided with three chambers and the like. Further, in FIG. 6 to FIG. 8, the parts having the same operations and functions as those of the components shown in the first embodiment and the like are designated by the same reference numerals and the description thereof will be omitted. The filter of the third embodiment will be described in detail below.

As shown in FIG. 6, the blocking body 200 corresponds to the blocking body 2 in the first embodiment and the like,
On both side surfaces of the block body 200, a first filter bed portion 14 formed by the block body 2 and a first squeezing filter bed recess 1 are formed.
5, the squeeze film recess 16 is formed in the same manner as the block body 2. Further, such a blocking body 200 is installed on a pedestal or the like by legs 203 as shown in the figure. Also, closed body 2
7, a support arm 29 for supporting the filter cloth hanging rod 27 of the filter cloth 7 is provided on the upper part of 00, and a motor 39 with a reducer for rotating the drive shaft 8 is provided.
And the transmission mechanism part 207 is attached. Transmission mechanism 2
Reference numeral 07 denotes the drive force from the motor 39 with a speed reducer.
Is transmitted to the rotary shaft 206.
It has pulleys 204 and 205 that rotate together. or,
A space 202 having an opening 201 in the upper portion of the closed body 200 is formed inside the central portion in the thickness direction of the closed body 200. A belt 208 is stretched between the speed reducer motor 39 and the pulley 204, and the belt 20 extending between the pulley 205 and the drive shaft 8 passes through the opening 201.
You can multiply by 9. Therefore, the drive shaft 8 rotates via the belt 208, the pulley 204, the rotary shaft 206, the pulley 205, and the belt 209 as the output shaft of the motor 39 with a reduction gear rotates.

On both the left and right sides of the closing body 200, the rotary frames 1 that rotate with the drive shaft 8 are arranged between the movable body 3 and the closing body 200, as in the structure of the first embodiment. . Further, the left and right movable bodies 3 are each provided with a tightening device 10 for moving the movable body 3 in the axial direction of the drive shaft 8. Further, in order to support the rotary frame 1 and to smoothly rotate the rotary frame 1, both ends of the support rod 37 are supported by the support portions 210 fixed to the tightening devices 10 on both sides installed on the frame or the like. The peripheral surface of the roller 38 rotatably mounted on the rotary frame contacts the peripheral surface of the rotary frame 1. As shown in FIG. 7, the support rod 37 and the roller 38 are provided on both sides below the rotary frame 1 to support the rotary frame 1.

In the operation of the thus constructed filter of the third embodiment, the drive shaft 8 is rotated by the motor 39 with a speed reducer attached to the closing body 200, and the two rotary frames 1 are simultaneously rotated. Except for the points, it is the same as the filter of the first embodiment described above. Therefore, the description of the operation is omitted.

According to the filter of the third embodiment,
Since two rotary frames 1 are provided as compared with the filter of the first embodiment, the filtration processing amount can be increased, and the floor space for installation of the device can be reduced as compared with the case where only two sets of the filters of the first embodiment are provided. Can be made smaller.

Fourth Embodiment: A fourth embodiment will be described with reference to FIGS. 14 and 15. The fourth embodiment shows another example of the device for rotating the rotary frame 1.
The number of chambers or the like provided on the rotary frame 1 or the like, in other words, the number of steps can be various numbers as in the above-described embodiments, but in the fourth embodiment, four chambers or the like are used. It is a type with. In addition, in FIGS. 14 and 15, parts that perform the same operations and functions as those of the components shown in the first embodiment and the like are designated by the same reference numerals, and the description thereof will be omitted. Below, the filter of 4th Example is demonstrated.

In the filter of the fourth embodiment, tooth-shaped notches 304 in the gear are formed on the entire circumference of the rotary frame 1 over the entire circumference. On the other hand, the notch 304 is engaged with the drive shaft 302 whose both ends are supported by the supporting body 301 attached to the closing body 2 installed on the gantry or the like and the tightening device 10 also installed on the gantry or the like. The gear 303 is fitted. The rotating frame 1 is rotated by the rotating device (not shown) connected to the drive shaft 302 so that the drive shaft 302 is rotated.
03, rotated via notch 304. The rotating frame 1
Similarly to the third embodiment, the support rods 37 and the rollers 38 are provided on both lower sides of the, and the rotary frame 1 is supported by the support rods 37 and the rollers 38.

The operation of the thus constructed filter of the fourth embodiment is the same as the operation of each of the above-described embodiments except that the rotating method of the rotary frame 1 is different from that of the other embodiments. The description is omitted. According to such a filter of the fourth embodiment, the installation area of the filter can be smaller than that of the first embodiment and the like.

Further, as a method of rotating the rotary frame 1, as shown in FIGS. 16 and 17, handle insertion recesses 42 are provided at appropriate intervals on the peripheral surface of the rotary frame 1, and the handle 42 is provided in the recess 42. It is also possible to fit the tip end portion of 43 and manually rotate the rotary frame 1 with the handle 43. In addition, when the method of manually rotating the rotary frame 1 is also provided in each of the above-described embodiments, an allowance such as disconnecting the mechanical connection between the drive shaft 8 and the rotating device 9 is required.

In each of the embodiments described above, when the plate thickness of the rotary frame is thick, the closing body is provided with a short cylinder type piston rather than a compressing film, and the piston is used for the inside of the chamber portion of the rotary frame 1. It is preferable to extrude the cake.
The cake may be scraped out by hand or dropped with a spatula if the cake is easily discharged to the extent that it collapses, or if it takes a relatively long time to discharge the cake. Further, the squeeze film for discharging the cake may be provided on the movable body instead of the closed body. In this case, a cake discharge port is provided at the cake discharge position of the closing body.

Further, in a filter of a type having a cake washing step, a blowing step and a reverse blowing step, the filter cloth 7 is at least
It only needs to be present at the filtration position and the squeezing position, and need not be present at the cake washing position, the blow or reverse blow position.

As described in detail above, the present invention has the following effects. That is, the frame body is sandwiched between the closing body and the movable body, and the chamber portion is selectively positioned at the filtration position and the cake discharge position around the rotation center axis with respect to the non-rotating closing body and the movable body. . Therefore, the undiluted solution is supplied to the chamber portion of the frame located at the filtration position, filtration is performed through the filter cloth,
After the filtration is completed, the frame can be rotated to position the chamber where the cake is present at the cake discharge position, so that the cake can be discharged from the inside of the chamber to the outside. On the other hand, at the time of discharging the cake, since the other chamber portion of the frame is located at the filtration position, the filtration can be performed. As described above, since the filtration step can be performed without being influenced by the execution of the steps other than the filtration step, the ratio of the filtration time can be made as long as possible in the whole filtration work time from the filtration to the cake discharge. Moreover, since the above-described operation is performed by rotating one frame, the entire structure can be made compact.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of a filter according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA shown in FIG.

FIG. 3 is a plan view of the rotary frame shown in FIG.

FIG. 4 is a cross-sectional view taken along line BB shown in FIG.

5 is a plan view of the filter cloth shown in FIG. 1. FIG.

FIG. 6 is a sectional view showing the structure of a filter according to a third embodiment of the present invention.

FIG. 7 is a sectional view taken along the arrow in FIG.

FIG. 8 is a plan view of a closing body, a rotating frame, and a movable body portion shown in FIG.

FIG. 9 is a sectional view showing the structure of a second embodiment of the filter of the present invention.

FIG. 10 is a cross-sectional view taken along the line AA shown in FIG.

11 is a plan view of the rotary frame shown in FIG. 9. FIG.

12 is a cross-sectional view taken along line BB shown in FIG.

FIG. 13 is a plan view of the filter cloth shown in FIG.

FIG. 14 is a diagram showing the structure of a filter according to a fourth embodiment of the present invention.

FIG. 15 is a plan view of a rotary frame portion shown in FIG.

FIG. 16 is a side view of a rotating frame according to another modification.

FIG. 17 is a plan view of the rotary frame shown in FIG.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rotating frame, 2 ... Closing body, 3 ... Movable body, 4 ... Rotating frame partition frame, 5 ... Blocking body partition frame, 6 ... Movable body partition frame, 7 ... Filter cloth, 8 ... Drive shaft, 9 ... Rotating device, 10 ... Tightening device, 11 ... 1st chamber part, 12 ... 2nd chamber part, 13 ... 3rd chamber part, 14 ... 1st filtration bed part, 15 ... 1st pressing filtration bed recessed part, 16 ... Recesses for squeeze film, 17 ... Second filtration bed, 18 ...
Second depression for filtration bed, 19 ... Cake outlet, 21 ... Undiluted solution passage, 22 ... Undiluted solution supply passage, 23 ... Opening, 24 ...
Filtrate discharge passage, 25 ... Filtrate discharge passage, 26 ... Compressed filtrate discharge passage, 27 ... Filter cloth hanging rod, 29 ... Support arm, 30 ... Filter cloth stop pin, 31 ... Filter cloth stop pin, 37 ... Support rod, 38 ... Roller, 39 ... Motor with speed reducer, 42 ... Handle insertion recess, 43 ... Handle, 102 ... Ejection film, 207 ... Transmission mechanism section, 303 ... Gear, 304 ... Notch.

Claims (10)

(57) [Claims] 1. A frame body that rotates around a central axis of rotation, and by rotating, a chamber section partitioned into at least two that can be selectively positioned at a filtration position and a cake discharge position, and the frame body. Corresponding to a frame body that is formed in the frame portion and has a stock solution supply passage that opens into the chamber portion, and a chamber portion that faces the frame body and does not rotate with respect to the frame body and that is located at the filtration position A blocking body that has a first filtration bed portion and blocks the chamber located at the filtration position, and the frame body that is sandwiched between the blocking body and does not rotate with respect to the frame body and that does not rotate the frame body. It is movable in the axial direction of the rotation center axis between a tightening position for tightening on the closing body and a tightening release position for releasing the tightening, and is formed corresponding to the chamber located at the filtration position. A movable body having a second filtration bed, and the first filtration bed and the filtration position. It is arranged between the chamber part located and between the said 2nd filtration floor part and the chamber part located in the said filtration position, and is pinched | interposed by the said block body and the said frame body, and is sandwiched by the said frame body and the said movable body. A filter cloth for closing the chamber located at the filtering position together with the first filtering bed and the second filtering bed to form a filtering chamber, and the blocking body and the movable body at the cake discharging position. One of the bodies has a space for discharging a cake, and a filter liquid discharge passage opening to at least one of the first filtration bed and the second filtration bed is formed. 2. The filtering machine according to claim 1, wherein the frame body can be manually rotated around the rotation center axis by a handle that can be attached to the frame portion. 3. The filtering machine according to claim 1, wherein the frame is fixed to a drive shaft including the rotation center axis, and is rotated together with the drive shaft by a drive source capable of rotationally driving the drive shaft. 4. The drive source is provided in the block body,
The filter according to claim 3, wherein the frame body and the movable body are provided on both sides in the rotation center axis direction with the blocking body as a center. 5. The squeezing chamber part for squeezing which is partitioned from the two chamber parts and which can be selectively positioned at a filtering position, a cake discharging position and a squeezing position by rotating. The block body further includes a first squeeze filter bed section that is a squeeze membrane that is swellable with a pressure fluid and that closes the squeeze chamber section corresponding to the squeeze chamber section. The body further has a second squeeze filter bed portion formed at the squeezing position corresponding to the squeeze chamber portion and closing the squeeze chamber portion together with the first squeeze filter portion. It is arranged between the floor section and the compression chamber section and between the second compression filtration floor section and the compression chamber section, and is sandwiched between the closing body and the frame body and sandwiched between the frame body and the movable body. Together with the first squeezing filter bed section and the second squeezing filter bed section, the squeeze chamber section is closed and compressed. It has a filter cloth for pressurization which forms a pressurization room, and the passage for discharge | emission of the press filtrate which opens in at least one of the said 1st press filter bed part and the said 2nd press filter bed part. The filter according to. 6. The cake cleaning, which is separated from the three chambers, can be selectively positioned at a filtering position, a cake discharging position, a pressing position, and a cake cleaning position by rotating the frame. And a first cake washing filter bed section for closing the cake washing chamber section corresponding to the cake washing chamber section. The movable body is provided in the movable body. And a second cake washing filter bed portion corresponding to the cake washing chamber portion at the cake washing position and closing the cake washing chamber portion together with the first cake washing filter bed portion. The frame body is disposed between the cake washing filter bed portion and the cake washing chamber portion and between the second cake washing filter bed portion and the cake washing chamber portion, and is sandwiched between the closing body and the frame body. Sandwiched between the movable body and the first cake A filter cloth for cake cleaning which forms a cake cleaning chamber by closing the cake cleaning chamber part together with the cleaning filter bed part and the second cake cleaning filter bed part, the first cake cleaning filter part and the second cake cleaning part The filter according to claim 5, further comprising: a waste liquid discharge passage opening in at least one of the filtration floor portions. 7. The frame can be selectively positioned at a filtration position, a cake discharging position, a squeezing position, a cake washing position, and further a blow and reverse blow positions by rotating.
There are a blow chamber part and a reverse blow chamber part for performing blow and reverse blow, which are partitioned from the two chamber parts, and the closing chamber further has the blow chamber corresponding to the blow chamber part and the reverse blow chamber part. Section and the reverse blow chamber section, and first and second recesses for closing the reverse blow chamber section. The movable body is further formed at the blow and reverse blow positions so as to correspond to the blow chamber section and the reverse blow chamber section. It has 3rd and 4th recessed part which closes the said blow chamber part and a reverse blow chamber part with the said 1st and 2nd recessed part, and between the said 1st and 2nd recessed part and the said blow chamber part and a reverse blow chamber part. And between the third and fourth recesses and the blow chamber portion and the reverse blow chamber portion, sandwiched between the closing body and the frame body, and sandwiched between the frame body and the movable body.
And a second recess, and a blowing filter cloth that closes the blow chamber and the reverse blow chamber together with the third and fourth recesses to form a blow chamber and a reverse blow chamber, and the first and third recesses. At least one and the second
7. The filter according to claim 6, further comprising: a compressed fluid supply / discharge passage opening to at least one of the fourth recess. 8. When the frame body has a disk shape, the frame body is rotated by driving a gear that engages gear-like teeth formed on the entire circumference of the frame body, Claims 1 to 7
The filter according to any one of 1. 9. A tightening device for moving the movable body between the tightening position and the tightening release position.
The filter according to any one of 1 to 8. 10. The cake discharging membrane according to claim 1, wherein the closing body is provided with a cake discharging membrane that can bulge from the closing body to the cake discharging hole side of the movable body at the cake discharging position. The described filter.