JPH042283B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a filter press in which a filter cloth hanging member for suspending and supporting a filter cloth between filter plates is movably supported in substantially vertical and longitudinal directions. This invention relates to a filter cloth hanging device.

BACKGROUND ART Hitherto, various structures of filter cloth hanging devices for filter presses of this type are known. For example, the present applicant previously filed an application for a filter cloth hanging device having the following configuration. That is, the above-mentioned filter cloth hanging device has supports fixed to both sides of each filter plate, and extends along the axial direction on the upper part of the supports so that each end of the filter cloth hanging member can move freely along the axial direction. A biasing member is built into each of the supports, and a bearing member is inserted into each of the supports so as to be movable along the axial direction of the supports. The shaft bearing member is configured to support each end of the filter cloth hanging member inserted between the ends of the support body.

In the above configuration, after the filter plate is opened, the filter cloth hanging member or the like is struck with a vibration plate of a vibrating device to lower the filter cloth, thereby loosening the filter cloth. Thereafter, the filter cloth hanging member is raised by the biasing force of the biasing member, and the filter cloth is returned to its original state where it is stretched along each of the front and rear surfaces of the filter plate. By repeating such operations, the filter cloth is moved substantially in the vertical direction and the filter residue is peeled off from the filter cloth.

Problems to be Solved by the Invention However, with the structure described above, each filter cloth hardly moves in the approximately front-back direction and simply loosens, so the amount of movement of the filter cloth in the approximately front-back direction is small, and Therefore, even if the filter cloth hanging member is moved up and down by the vibrating device, the filter cloth only moves approximately up and down, and the filter cloth does not flap so much in the front and back direction of the filter plate, and the fine filter residue is peeled off from the filter cloth. There have been times when problems have arisen that have been described as difficult.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a filter cloth hanging device for a filter press that can effectively separate even fine filter residue from a filter cloth in order to solve the above-mentioned problems.

Means for Solving the Problems In order to achieve the above object, the present invention includes two biasing members, and the second biasing member also biases the filter cloth hanging rod upward, while the first biasing member biases the filter cloth hanging rod upward. The filter cloth is urged in a direction away from the filter plate by the biasing member, and when the filter cloth hanging rod is lowered, the filter cloth is biased in either direction toward the front or rear of the filter plate by the first biasing member, When the filter cloth hanging rod rises due to the biasing force of the second biasing member, the filter cloth approaches the filter plate, so that the filter cloth flaps against the filter plate and the filter residue is easily peeled off. It was configured as follows. That is, a filter cloth hanging device for a filter press that supports a filter cloth hanging member that suspends and supports a filter cloth disposed between adjacent filter plates so as to be movable in substantially the vertical direction and in the longitudinal direction, respectively, is used. A lever is provided at each end of the filter cloth hanging member, a support member is provided to swingably support the lever, and the lever is biased against the support member in a direction in which the filter cloth separates from the filter plate. The first biasing member is fixed to both sides of each of the filter plates, extends along the axial direction at the upper part, and each end of the support member is inserted so as to be movable along the axial direction. a second biasing member built into each of the supports and having a larger biasing force than the first biasing member; and a bearing member that is movably inserted along the axial direction of the support member and supports each end of the support member that is inserted between the ends of the support member.

Effects of the Invention In the above configuration, when the support member is lowered by being hit with a diaphragm of a vibrating device after opening the filter plate, the shaft bearing member along with the support member in the support body acts as the second biasing member. It descends against the urging force, and the filter cloth is moved in a direction away from the filter plate by the urging force of the first urging member via the lever and the filter cloth hanging rod. When the diaphragm or the like separates from the support member, the bearing member is raised together with the support member by the urging force of the second urging member,
Bring the filter cloth closer to the filter plate again. This operation causes the filter cloth to flap significantly against the filter plate.

Effects of the Invention According to the above configuration, when the support member descends,
After the filter cloth is once moved away from the filter plate by the biasing force of the first biasing member, the support member is raised by the biasing force of the second biasing member to bring the filter cloth closer to the filter plate. As a result, the filter cloth flaps significantly against the filter plate, and even fine filter residue adhering to the filter cloth can be peeled off from the filter cloth. That is, the filter cloth flutters more against the filter plate than when the filter cloth is moved substantially vertically parallel to the filter plate, and the removal rate of filter residue is improved. Moreover, since the filter cloth is always subjected to a biasing force in the front-rear direction of the filter plate by the first biasing member, even when the support member is lowered against the second biasing member, 1
Since the filter cloth is held in a stretched state by the biasing force of the biasing member, the filter residue is easily peeled off from the filter cloth.

Embodiments Below, embodiments of the present invention will be described in detail based on FIGS. 1 to 5.

First, a schematic structure of a well-known filter press to which the filter cloth hanging device for a filter press according to this embodiment is applied will be described. That is, the above-mentioned filter press has a large number of filter plates 1, . The filter cloth hanging rods 2, 2 are provided as filter cloth hanging members for suspending and supporting the filter plates 1, 5, respectively, and the movable plate is moved to suspend and support the large number of filter plates 1, 5, respectively.
..., 1 are closed, and the stock solution is supplied between the pair of filter cloths 5, 5 between the respective filter plates 1, 1 to perform filtration. On the other hand, the movable plate is moved in the opposite direction to open the filter plates 1, . . . , 1, and the filter residue held between the pair of filter cloths 5, 5 between the filter plates 1, 1 is removed. Configure it as follows. Each of the filter plates 1 has handles 1a, 1a protruding in the lateral direction on both sides thereof, and each of the handles 1a is hung and supported by each guide rail 4 installed between the front and rear stands so as to be slidable back and forth. , to guide the movement of each filter plate 1. A bag portion 5a is formed at the lower end of each filter cloth 5 by sewing, and the bag portion 5a is attached to a support frame 1 supported below the filter plate 1.
The lower end of the filter cloth is fixed by inserting it into the support rod 1c fixed between the ends of the filter cloth.

As shown in FIGS. 1 and 2, the filter cloth hanging device applied to this filter press includes levers 7 at both ends of a filter cloth hanging rod 2, and supports that slidably support the levers 7. A support rod 10 is provided as a member, and the lever 7 is connected to the support rod 10.
A first coil spring (torsion spring) 11 is provided as a first biasing member that biases the filter cloth 5 in a direction away from the filter plate 1. Further, the filter cloth hanging device fixes supports 3, 3 to predetermined locations of both handles 1a, 1a of each filter plate 1, and in the supports 3,
A second coil spring 9 as a second biasing member and a bearing member 6 biased upward by the second coil spring 9 are built in so as to be movable along the axial direction of the support body 3, and The support rod 10 is attached to the member 6.
is roughly configured by fixing it.

Each of the supports 3 is a member having a hollow rectangular frame shape in cross section, and is fixed to the upper side surface of each of the filter plates 1 and to the upper surface of the handle 1a so as to protrude upward. The side surface of the support 3 on the filter cloth side has a long groove 3a extending along the axial direction and having an open upper end.
Equipped with.

Inside each support body 3, the second coil spring 9 is provided.
Then, the spring receiver 8 that contacts the lower end of the second coil spring 9 and the bearing member 6 that is placed on and contacts the lower end of the second coil spring 9 are inserted so as to be movable along the axial direction of the support.

The bearing member 6 has a threaded hole 6b extending laterally through its side surface, and the threaded portion of the small diameter end 10a of each of the support rods 10 is screwed into the threaded hole 6b and fixed therein. Therefore, each of the small-diameter ends 10a of the support rod 10 can freely move up and down along the long groove 3a of the support 3 together with the bearing member 6 in the axial direction of the support. Further, the center portion of the lower end surface of the bearing member 6 is provided with a protrusion 6a that is inserted into the inside of the second coil spring 9, and the upper end of the second coil spring 9 is received on the lower surface around the protrusion 6a. .

The spring receiver 8 is supported so as to be movable substantially in the vertical direction within the support body 3 via an adjustment member (not shown) to be described later at the lower part of the support body 3. A protrusion 8a is provided at the center of the upper surface of the spring receiver 8. The protrusion 8a is inserted into the second coil spring 9, and the lower end of the second coil spring 9 is held on the upper surface around the protrusion 8a. receive. Therefore, the second coil spring 9 is compressed between the bearing member 6 and the spring receiver 8 within the support body 3, and the urging force of the second coil spring 9 pushes the support rod 10 through the bearing member 6.
is supported so as to be movable substantially in the vertical direction of the filter plate 1.

Further below the spring receiver 8, although not specifically shown, the adjustment member such as a bolt is provided,
The bolt is screwed upward into the handle 1a, the spring receiver 8 is moved along the axial direction of the support 3, and the biasing force of the second coil spring 9 is adjusted to adjust the tension of the filter cloths 5, 5. may be adjusted.

On the other hand, both small-diameter ends 10 of each of the support rods 10 are
A pair of levers 7, 7 are rotatably fitted into a, 10a. The first coil spring 11 is attached to the support rod 10 between the pair of levers 7, 7.
and each end 11 thereof as shown in FIG.
a, 11b into the locking hole 7a at the top of each lever 7.
The levers 7, 7 are locked inward so that the levers 7, 7 are biased away from each other. The filter cloth hanging rod 2 having a rectangular cross section is fitted and fixed to the lower part of each lever 7. Each filter cloth hanging rod 2 has an upper end portion of the filter cloth 5 fixed thereto. Therefore, due to the biasing force of the first coil spring 11 against the support rod 10, the pair of filter cloths 5, 5 on the front and rear of the filter plate 1 are moved through the filter cloth hanging rods 2, 2 and the levers 7, 7. They are constantly biased in the direction of moving away from each other. Note that the filter cloth hanging rods 2, 2 arranged before and after the filter plate 1 are connected to one of the filter cloth hanging rods 2.
is formed longer in the axial direction than the other filter cloth hanging rod 2,
When the filter plates 1, . Further, assuming that the biasing force of the first coil spring 11 is sufficiently smaller than the biasing force of the second coil spring 9, after the support rod 10 is struck by the vibration device and lowered, the biasing force of the second coil spring 9 is applied to the biasing force of the second coil spring 9. When the support rod 10 is raised, the filter cloths 5, 5 whose lower ends are supported by the filter plate 1 are stretched along the front and rear surfaces of the filter plate 1, and the levers 7, 7
The filter cloth 5 can be moved toward the filter plate by swinging the filter cloth 5 toward each other.

On the other hand, above the support rod 10, a well-known filter cloth vibrating device (not shown in detail) is provided, and when the filter plate is opened, the diaphragm 14 of the vibrating device (see FIG. 5) Hit the support rod 10 downward,
Vibrations are applied to the filter cloths 5, 5.

According to the above configuration, after the filtration process is completed and the filter plates 1, . When the support rod 10 is lowered by the dimension h, the second coil springs 9, 9 are respectively contracted via the bearing members 6, 6, and at the next moment, the urging force of the second coil springs 9, 9 is applied to the support rod 10. Raise the levers 7, 7, 7, 7 and the filter cloth hanging rods 2, 2 upward. Next, the filter cloths 5, 5, the support rod 10, the levers 7, 7, 7, 7, and the filter cloth hanging rods 2, 2
When the second coil springs 9, 9 are contracted by their own weight, the support rod 10, etc., is caused to undergo a damping motion approximately in the vertical direction. When the support rod 10 is lowered, due to the biasing force of the first coil spring 11,
A pair of levers 7, 7 on both sides of the support rod 10 on each front and rear surface of the filter plate 1 swing to move the filter cloth 5 away from the filter plate 1 (see FIG. 5). When the support rod 10 rises, the support rod 10 is urged upward by the urging force of the second coil spring 9, and each filter cloth 5 is stretched along each of the front and rear surfaces of the filter plate 1. This stretching action causes the levers 7, 7 to swing toward each other toward the filter plate through the filter cloth 5 against the biasing force of the first coil spring 11, thereby moving the filter cloth 5 to each side of the filter plate 1. (See Figure 4). In this way, when the support rod 10 is moved substantially in the vertical direction by the vibration device, the filter cloths 5, 5 are also moved substantially in the front-back direction with respect to the filter plate 1 due to the urging force of the coil springs 11, 9. It is possible to effectively peel off the filter residue that flutters and adheres to the filter cloth 5.

According to the embodiment described above, the filter cloth hanging rods 2, 2 are attached to the filter plate 1 so as to be movable substantially in the vertical direction and movably in the longitudinal direction, and both coil springs 1
The filter cloths 5, 5 are made to flutter against the filter plate 1 by the biasing forces of the filter cloths 5, 9.
Even fine filter residue adhering to the filter cloth 5 can be effectively peeled off from the filter cloth 5. That is, compared to the conventional method in which the filter cloths 5, 5 are simply moved approximately only in the vertical direction along each front and rear surface of the filter plate 1, the filter cloths 5,
5 also moves substantially in the front-back direction and flutters against each surface of the filter plate 1, so that the efficiency of removing filter residue from the filter cloths 5, 5 can be greatly improved. In addition, since the filter cloth hanging rods 2, 2 are connected to the filter plate 1 through the levers 7, 7, the support rod 10, and the support body 3 so as to be able to move approximately vertically, the filter cloth hanging rods 2, 2 Connection with the support rod 10 can be achieved with a simple structure, and the structure of the filter cloth hanging device as a whole becomes simple.

Note that the present invention is not limited to the above-mentioned embodiments, and can be implemented in various other embodiments.

For example, if the filter plate 1 has a large width, the pair of filter cloth hanging rods 2, 2 may have the same length in the axial direction, and when the filter plate is closed, both levers 7,
7 and the filter cloth hanging rods 2, 2 may both be housed within the width of the filter plate 1.

Further, in order to adjust the unfolding tension of each filter cloth 5 and the degree of flapping of the filter cloth 5, the biasing force of the second coil spring 9 is adjusted by adjusting the position of the spring receiver 8 as in the above embodiment. However, depending on the spring force of the second coil spring 9, the spring receiver 8 can be replaced with one having a larger axial length,
The expansion tension of the filter cloths 5, 5 and hence the vibration amplitude thereof may be adjusted. In addition, the levers 7, 7
The degree of flapping of the filter cloths 5, 5 is adjusted by replacing the filter cloths 2, 2 with ones having different axial lengths, or replacing each of the filter cloth hanging rods 2, 2 with ones of different weights. You can do it like this.

Further, as the support body 3, a plurality of plate-like members are fixed to the handle 1a so as to project upward, and the end portion 10a of the support rod 10 is inserted between the plate-like members so as to be movable in the vertical direction. It may also be constructed by forming a space between the two sides.

Further, the cross-sectional shape of the support body 3 is not limited to a rectangular frame, but may be annular.

[Brief explanation of drawings]

FIG. 1 is a front view of a main part showing a filter cloth hanging device of a filter press according to an embodiment of the present invention, FIG. 2 is a side view of a main part of a filter plate equipped with a filter cloth hanging device according to FIG. 1, FIG. 3 is an enlarged plan view of the main part of the filter cloth hanging device according to FIG. It is a side view of the filter plate showing the state when it is lowered. DESCRIPTION OF SYMBOLS 1... Filter plate, 1a... Handle, 2... Filter cloth hanging member, 3... Support body, 3a... Long groove, 4... Guide rail, 5... Filter cloth, 6... Bearing member, 6a... ...Protrusion, 6b...Through hole, 7...Lever, 8...Spring receiver, 8a...Protrusion, 9...Second coil spring, 10...Support rod, 10a...End, 11...
First coil spring, 14... diaphragm.

Claims (1)

[Scope of Claims] 1. A filter that supports a filter cloth hanging member 2, which suspends and supports a filter cloth 5 disposed between adjacent filter plates 1, 1, so as to be movable approximately in the vertical direction and approximately in the front-back direction. A filter cloth hanging device for a press includes levers 7 at both ends of the filter cloth hanging member 2, and support members 1 that swingably support the levers 7.
0 and a first biasing member 11 for biasing the lever 7 against the support member 10 in a direction in which the filter cloth 5 separates from the filter plate 1, and on both sides of each filter plate 1. A space 3a which is fixed to each other and extends along the axial direction in the upper part, into which each end of the support member 10 is inserted movably along the axial direction.
a second biasing member 9 built into each of the supports 3 and having a larger biasing force than the first biasing member 11; 9 so as to be movable along the axial direction of the support 3, and between the ends 3a of the support 3.
Each end 10a of the support member 10 inserted further
A filter cloth hanging device for a filter press, characterized in that it is equipped with a shaft bearing member 6 for supporting. 2. The filter cloth hanging device for a filter press according to claim 1, wherein the first biasing member 11 is a torsion spring.