JP5315032B2 - Filter press equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a filter press apparatus capable of reducing a cost with a simple structure while decreasing a load laden on filter plates. <P>SOLUTION: A locking claw 51 is freely turnably attached to a platform 41 of a plate opening device 25 which moves a filter plate 12. In the plate opening device, a direction in which each distance of filter plates 12 is closed to be in an overlapping state is a closing direction and a direction in which each distance of filter plates 12 is open is an opening direction. The locking claw 51 is disposed in such a manner that its tip end extends from a lateral direction of the outside to a supporting arm 35 of the filter plate 12. A spring 63 for applying a force to the locking claw 51 so as to touch a touching part 61 of the tip end with one plain 35a of the supporting arm 35, and a stopper 53 for locking the locking claw 51 in such a state that the touching part 61 is touched to the supporting arm 35 are provided, and a locking claw 51 is turned by touching the supporting arm 35 when the plate opening device 25 slides in a plate closing direction to pass on its lateral side without intervened by the supporting arm 35. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

The present invention relates to a filter press apparatus for opening a filter plate for removing sludge in a filter press for filtering a liquid to be treated and separating it into filtrate and sludge.

Conventionally, as a filter press apparatus as described above, a plurality of filter plates are in a polymerized state, a pair of filter cloths are sandwiched between adjacent filter plates, and a filter chamber is formed between these filter cloths. In other words, a slurry that is a liquid to be treated is press-fitted to perform dewatering. And in patent document 1 and patent document 2, in order to remove the sludge (cake) which separated the filter plates after filtration and removed the sludge (cake) which remained in the filter chamber, the filter plate pulling mechanism (opening machine) for moving this filter plate Has been disclosed.
The filter plate pulling mechanism (opening machine) has a filter plate retracting claw (locking claw), and a suspension hand (support arm) for holding the filter plate in a slidable and suspended manner in the apparatus. ), The filter plate is moved by hooking the filter plate pull-back claw. Further, the filter plate pull-back claw is disposed below the suspension hand (support arm).
The filter plate is supported on the rail from below by way of a suspension (support arm). The cake attached to the filter cloth is removed by applying vibration to the filter cloth through the filter plate.

JP 2002-273109 A JP 2000-117099 A JP 2008-207130 A

By the way, in the above conventional filter press apparatus, the reason why the filter plate pull-back claw is disposed below the filter plate suspension (support arm) is that the filter plate pulling claw is below the suspension (support arm) when viewed from the direction of movement of the filter plate. This is probably because the edge is in a certain position.
However, when the filter plate pull-back claw is disposed below the hand (support arm), it is necessary to avoid the rail that supports the hand (support arm) and to dispose the filter plate pull-back claw. Since the tip of the suspension (support arm) has to protrude further outward than the rail so that the filter plate pull-back claw is reliably caught on the tip of the suspension (support arm), the suspension ( The support arm) tends to be long. When the suspension (support arm) becomes long, when the filter plate is moved, or when tapped from above to apply vibration, a load is applied to the joint with the filter plate at the base end of the suspension (support arm). Since it became easy to add, there existed a problem that a filter plate became easy to break.
On the other hand, Patent Document 3 discloses a configuration in which an arm for gripping a support arm when the filter plate is moved is approached obliquely laterally with respect to the support arm. The arm is configured by a cylinder. Therefore, there is a problem that the apparatus becomes complicated and expensive.
Furthermore, the filter plate struck from above to give vibration may be inclined with respect to the rail. In such a case, the suspension hands (supporting arms) on both sides of the filter plate are displaced from each other before and after the moving direction of the filter plate. Therefore, the filter plate pulling mechanism (open plate) arranged on both sides of the filter plate The movement of the machine has to be controlled independently, and there is a problem that the apparatus becomes complicated and expensive.
The present invention has been made paying attention to such problems existing in the prior art. An object of the present invention is to provide a filter press device that can reduce the load applied to the filter plate and reduce the cost with a simple configuration.

As a means for solving the conventional problems, the invention of the filter press device according to claim 1 is characterized in that a plurality of filter plates are provided on both sides of the filter plate with respect to a filter plate support frame provided in the device. In the filtration process, a plurality of filter plates are closed by closing the filter plates with the filter cloth interposed between the filter plates. In the cleaning step after the filtration step, the sludge accumulated on the filter cloth is removed by opening the gaps between the filter plates and filtering the treatment solution. In the filter press device configured to perform the above, a plate opener support frame is disposed outside the filter plate support frame, and a plate opener is attached to the plate opener support frame. The opening machine support is designed to be slidable in the same direction as the sliding direction of the filter plate. A base supported by a frame, and a locking claw attached to the base so as to be freely rotatable, and in the sliding direction of the filter plate and the plate opening machine, between each filter plate The direction in which the filter plate is closed and in a superposed state is the closed plate direction, the direction in which the filter plates are opened is the open plate direction, and the tip of the locking claw is outward with respect to the support arm of the filter plate. The contact portion provided at the tip of the locking claw is on the surface of the support arm of the filter plate on the side of the closing plate direction. an urging member for urging the locking pawl so as to abut a stopper path for locking the locking claw in a state where the abutting portion is in contact with the support arm is provided, the engagement of the stopper A first rotation restricting surface on one side which is the pawl side has a slope shape that inclines toward the opening plate direction side toward the support arm side of the filter plate. Vignetting, the locking pawl in a state where the base end portion to the first rotation restricting surface is abutment are arranged in angled away from the support arm as the toward closing plate direction, with the locking pawl When the plate opening machine slides in the closing direction, the locking claw is rotated by contacting the support arm and the abutment portion is not interfered with the support arm. Is provided with a sliding contact portion for maintaining the contact state with the support arm so that the filter plate passes through the side of the support arm. When the plate opening machine moves in the closing direction after all the filter plates have been moved, the locking claw contacts the locking claw and rotates the locking claw toward the opening direction. When sliding in the opening plate direction, the locking claw contacts the locking claw so that the locking claw passes through the side of the support arm without interfering with the support arm of the filter plate. The gist is that the forced tilting body that maintains the touch state is movably attached .

According to the above, the engaging claw of the plate opening machine is arranged so that the tip thereof is outward with respect to the support arm of the filter plate and extends from the lateral direction with respect to the opening plate direction. Since it is configured to project laterally from the base of the machine toward the support arm, it is not always necessary to project the tip of the support arm outside the filter plate support frame that supports the support arm. Therefore, the length of the support arm can be shortened as compared with the conventional configuration in which the locking claw extends upward from below the support arm, and the load applied to the filter plate can be reduced.
Further locking claw is rotatably mounted relative to the base, and in a state where the base end portion is abutted against the inclined plane first rotation restricting surface of which is provided on the stopper, the closing plate direction Ru disposed angled away from the support arm as the heading. When the plate-opening machine moves in the plate- opening direction, the locking claw is hooked on the support arm by the base end being brought into contact with the first rotation restricting surface of the stopper and being restricted . When the plate-opening machine moves in the closing plate direction, the locking claw is disposed obliquely away from the support arm as it goes in the closing plate direction. It passes through the side without interference. The rotation of the locking pawl is, there is carried out by sliding of the support arm, since it is not intended to be done with some kind of driving device, a configuration is simple, a device cost Can be.
Further, the forced tilting body is separated during the movement of the filter plate by the plate opening machine, and does not prevent the locking claw from being caught by the support arm, and the plate opening machine is closed after all the filter plates are moved. Since the contact state is maintained by contacting the locking claw when moving in the direction, the configuration is useful when the plate opening machine is moved in the closing direction without locking the locking claw to the support arm. be able to.
In consideration of the displacement of the support arm due to the vibration of the filter plate, the outer edge of the support arm does not become a fixed position when viewed from the moving direction of the filter plate, and an air cylinder or the like is required to grip the support arm from the side. For example, it is necessary to use a device having an expansion / contraction mechanism, or to perform movement control of the plate opening machine, which causes the device to be complicated and expensive. On the other hand, if it is the structure of this invention, the thing of complicated structures, such as an expansion-contraction mechanism, is not used, and this filter plate is the structure which moves an opening machine interlock | cooperating mutually with the both sides of a filter plate. Even in the case of being inclined, the support machine can be sufficiently grasped by reversing after the opening machine has once passed the side of the support arm.

According to a second aspect of the present invention, in the invention of the filter press device according to the first aspect, in addition to the base and the locking claw, the opening machine is further rotatable on the base. And the position correction claw is a position opposite to the locking claw, the tip of the position correction claw is outward from the support arm of the filter plate, and the plate opening direction It is arranged so as to extend from the lateral direction with respect to the base plate, and the base has a contact portion provided at the tip of the position correction claw so that the contact portion is in contact with the surface of the support arm of the filter plate on the plate opening direction side. An urging member for urging the position correction claw and a stopper for locking the position correction claw in a state where the contact portion is in contact with the support arm are provided. When sliding in the direction of opening the plate, if the position correction claw is rotated in contact with the support arm, And a guide portion for maintaining the contact state with the support arm so that the position correcting claw passes through the side of the support arm without the contact portion being interfered with the support arm. Is the gist.
According to the above, even when the filter plate to be moved is inclined, the position correction claw presses the filter plate against the adjacent filter plate so that the filter plate is substantially straightened. Is done. Further, the position correcting claw is rotatably attached to the base like the above-mentioned locking claw, and the rotation is performed by contact with the support arm and does not use a driving device or the like. Therefore, the position of the filter plate can be corrected while simplifying the configuration.

( Delete )

According to a third aspect of the present invention, in the invention of the filter press device according to the first or second aspect , the guide portion of the position correcting claw has a length of a contact portion with the support arm in a superposed state. The gist is that it is set longer than the distance between the support arms of adjacent filter plates.
According to the above, by setting the length of the sliding contact portion of the guide portion to be longer than the distance between the support arms of the adjacent filter plates in the overlapped state, the side of the support arm of the filter plate in the overlapped state is When the plate opening machine passes, the position correction claw can be held in a rotated state.

The invention according to claim 4 is the invention of the filter press device according to any one of claims 1 to 3 , wherein the sensor detects that the movement of the plate opening machine has stopped during the plate opening operation; A timer for measuring the stop time of the movement is provided, and the movement direction of the plate opening machine is reversed when the movement stop of the plate opening machine is detected based on the detection result by the sensor and the measurement result by the timer. The gist is to make it.
According to the above, it is possible to detect the movement stop due to the movement of the inside of the apparatus until the filter plate comes into contact with the adjacent filter plate, and it is possible to suppress the open plate machine from moving wastefully, The time required for the plate opening work can be shortened.

  ADVANTAGE OF THE INVENTION According to this invention, the filter press apparatus which can be made low-cost with a simple structure can be provided, reducing the load added to a filter plate.

Hereinafter, an embodiment embodying the present invention will be described.
As shown in FIG. 1, the filter press 10 includes a machine frame 11, a plurality of filter plates 12, and a filter cloth 13.
The machine frame 11 has a bottom frame 14 disposed at the bottom, and outer frames 15A and 15B provided upright at both ends of the bottom frame 14, respectively. In the machine frame 11, a pair of left and right filter plate support frames 16 are installed between a pair of outer frames 15A and 15B.
The filter plate 12 is slidably supported on the left and right sides by the filter plate support frame 16 so that the extending direction of the filter plate support frame 16 can be moved as a moving direction (lateral direction in FIG. 1). It has become. In the machine frame 11, a fixed platen 17 is fixed to an outer frame 15 </ b> A on one end side (left end side in FIG. 1) in the moving direction of the filter plate 12. A cylinder 18 is fixed to the outer frame 15B on the other end side (the right end side in FIG. 1) in the moving direction of the filter plate 12, and a press plate 20 is supported via a pressing bar 19 extending from the cylinder 18. ing.
The plurality of filter plates 12 are disposed between the fixed platen 17 and the push platen 20. Between the upper ends of a pair of adjacent filter plates 12, a filter cloth extension fitting 21 is installed. Filter cloth tension fitting 2
1 has a mountain shape in a side view, and can be opened and closed in the moving direction of the filter plate 12 as each filter plate 12 moves.
The filter cloth 13 is folded in half, both lower ends are connected to the filter plate 12, and the center of the upper end is suspended from a filter cloth extension fitting 21 via a spring 22. When discharging the cake as sludge, the filter cloth extension fitting 21 is opened in conjunction with the movement of the filter plate 12 and the filter cloth 13 is opened while being pulled upward by the spring 22.
A vibrator 23 is disposed above the filter cloth extension fitting 21. The vibrator 23 is configured to vibrate the filter cloth 13 suspended from the filter cloth extension fitting 21 via a spring 22 by hitting the upper end portion of the filter cloth extension fitting 21. The cake is shaken off from the filter cloth 13 that vibrates in spring.

In the machine frame 11, an opening machine support frame 24 is installed between the pair of outer frames 15 </ b> A and 15 </ b> B below the filter plate support frame 16. The opening machine support frames 24 are provided on both sides of the filter plate 12 in the moving direction, and are disposed so as to extend in parallel with the filter plate support frame 16.
An opener 25 is attached to the opener support frame 24 so as to be movable by sliding on the opener support frame 24. Sprockets 26 are respectively provided at the lower portions of both ends of the opening machine support frame 24 in the moving direction of the filter plate 12. The sprocket 26 is connected to the shaft 2
7 is supported inside the filter press 10. A chain 28 is installed between the sprockets 26, and the chain 28 is connected to the plate opening machine 25 on the way.
The sprocket 26 is rotationally driven by a motor (not shown), and the rotation of the sprocket 26 is transmitted to the chain 28. When the chain 28 pulls the plate opening machine 25, the plate opening machine 25 is It moves on the opening machine support frame 24 by sliding in a predetermined direction. Then, the plate opening machine 25 is connected to the support arm 35 of the filter plate 12.
The filter plate 12 is moved on the plate support frame 24 while pressing the filter plate 12 so that the filter plate support frame 1
6 is slid in a predetermined direction and moved.

Here, the configuration of the filter plate 12 will be described. As shown in FIGS. 2A and 2B, the filter plate body 31 constituting the filter plate 12 is formed in a substantially square plate shape. A concave portion 32 having an octagonal shape in front view is formed on one side and the other side of the filter plate main body 31 so as to form a filter chamber between the filter plates 12.
A feed hole 33 is formed in a substantially central lower portion of the filter plate main body 31. The slurry to be filtered is fed from the feed hole 33 to the filter chamber formed by the recess 32 and dehydrated. Although not particularly illustrated, the filter plate main body 31 is provided with a filtrate outlet for discharging the filtrate in the slurry and a groove for collecting the filtrate at the filtrate outlet.
Long plate-like support arms 35 are attached to the left and right side surfaces of the filter plate main body 31. The filter plate 12 is supported by being hooked on the filter plate support frame 16 by placing the support arm 35 on the filter plate support frame 16.

The position of the filter plate 12 inside the filter press 10 will be described. As shown in FIG. 1, the position of the filter plate 12 is the filtration position if it is on the fixed platen 17 side, and is the standby position if it is on the push platen 20 side.
The filter press 10 brings the plurality of filter plates 12 into contact with each other at the filtering position, and is further sandwiched between the fixed platen 17 and the press platen 20 by the pressure from the press platen 20 by the cylinder 18 and the press rod 19, As a polymerization state, a filter cloth 13 is interposed between the filter plates 12 in a polymerization state.
Pinch. And the slurry which is a to-be-processed liquid is press-fit in the filter chamber formed between each filter plate 12, and the filtration process which filters a slurry is performed.
After completion of the filtration step, the pressing by the push plate 20 is released, and the switch 25 moves on the opening machine support frame 24 while pushing the filter board 12 one by one. It moves along the filter plate support frame 16 from the position to the standby position. Between the filtration position and the standby position, the filter plate 12 to be moved is opened by spreading between the adjacent filter plates 12, and the filter cloth extension fitting is attached as the filter plate 12 is opened. 21 and between the filter cloths 13 are opened. Then, the vibrator 23 strikes the upper end of the filter cloth extension fitting 21 and vibrates the filter cloth 13, thereby removing the cake, which is sludge accumulated on the filter cloth 13, by shaking it off. Is done.
In addition, after the cleaning process is completed and all of the filter plate 12 is moved to the standby position, the press rod 26 is extended from the cylinder 25 and pushed by the press plate 27 before the start of the filtration process. As a result, all are moved together to the filtration position and further pressed by the press platen 20 at the filtration position to be in a superposed state.

Here, the moving direction of the filter plate 12 will be described. Filter plate 12 to be moved (hereinafter,
The “target filter plate 12A” is separated from the filter plate 12 adjacent to the target filter plate 12A (hereinafter referred to as “adjacent filter plate 12B”) by the plate opening machine 25, and the standby position from the filtration position. The direction of moving to the right (the right direction in FIGS. 3A and 4) is defined as the plate opening direction. On the other hand, the direction opposite to the opening direction is the direction in which the target filter plate 12A is moved from the standby position to the filtration position, and the space between the filter plates 12 is closed (see FIG. 3 (a), The left direction in FIG. 4 is the closing plate direction.

The plate opening machine 25 will be described. FIG. 3A is a plan view of the plate opening machine 25 as viewed from above the filter press 10, and FIG. 3B is a side view of the plate opening machine 25 as viewed along the plate opening direction. FIG. 3 is a cross-sectional view of the plate opening machine 25 as viewed from the inside of the filter press 10.
The plate opening machine 25 has a base 41. The base 41 includes an outer substrate 41A and an inner substrate 41B disposed so as to sandwich the opening machine support frame 24 from both sides, a support plate 42 erected on the outer substrate 41A and the inner substrate 41B, have. In the base 41,
The support plate 42 is disposed on the side of the filter plate support frame 16.
In the base 41, between the outer substrate 41A and the inner substrate 41B, two pairs of upper and lower guide rollers 43 are disposed and attached so as to sandwich the opening machine support frame 24 from above and below. A pair of chain connection portions 44 are attached to the lower portion of the inner surface of the outer substrate 41A. The chain connecting portion 44 is connected to the end of the chain 28 so that the plate opening machine 25 is moved.

In the base 41, a locking claw 51 is attached to one side (left side in FIG. 3A) on the support plate. Moreover, in the said base 41, the other side part on the support plate 42 (FIG. 3 (
A position correcting claw 52 is attached to the right side in a). On the support plate 42 of the base 41, a stopper 53 is attached between the locking claw 51 and the position correction claw 52 at the edge on the outer substrate 41A side.

The locking claw 51 will be described. The locking claw 51 is formed in a substantially square bar shape, and is attached to the support plate 42 via an attachment shaft 51a at an intermediate portion thereof. The locking claw 51 is rotatable in the opening direction or the closing direction about the mounting shaft 51a. The locking claw 51 is attached to the upper surface of the support plate 42, and is arranged so that the tip of the filter plate 12 extends outward from the lateral direction with respect to the support arm 35 of the filter plate 12 from the lateral direction. (See FIGS. 3A and 3B). Accordingly, the locking claw 51 protrudes laterally from the base 41 of the plate opening machine 25 toward the support arm 35. Therefore, the support arm 35 of the filter plate 12
The tip of the filter plate is not greatly protruded to the outside of the filter plate support frame 16, and is shorter than that of the conventional structure.
A sharp contact portion 61 is provided at the tip of the locking claw 51. The contact portion 61 is a locking surface 61a formed so that the side surface on the opening plate direction side extends in a direction orthogonal to the opening plate direction or the closing plate direction. The locking claw 51 is locked to the support arm 35 by bringing the locking surface 61a into contact with the one surface 35a of the support arm 35 on the closed plate direction side.
A first rotation restricting surface 53 a is provided on one side of the stopper 53 that is the locking claw 51 side. The first rotation restricting surface 53a is formed in a slope shape that inclines toward the opening plate direction side toward the support arm 35 side of the filter plate 12. The base end portion of the locking claw 51 is in contact with the first rotation restricting surface 53a in a state where the locking surface 61a of the contact portion 61 is in contact with the one surface 35a of the support arm 35. Yes. And the 1st rotation control surface 53a has controlled the rotation to the closing plate direction of this latching claw 51, when the base end part of this latching claw 51 is contact | abutted.

The locking claw 51 is disposed in an oblique shape so as to move away from the support arm 35 toward the closing plate direction in a state where the base end portion thereof is in contact with the first rotation restricting surface 53 a of the stopper 53. Further, the locking surface 61 a of the locking claw 51 is such that the base end portion of the locking claw 51 is the first rotation regulating surface 53 a of the stopper 53.
Is formed so as to be substantially parallel to the one surface 35 a of the support arm 35.
Therefore, when the plate opening machine 25 moves in the plate opening direction, the locking claw 51 rotates in the closing plate direction with its base end abutting against the first rotation regulating surface 53a of the stopper 53. In a state in which the contact portion 61 is restricted, the locking surface 61 a of the contact portion 61 contacts the one surface 35 a of the support arm 35. As a result, the plate opening machine 25 moves the filter plate 12 in the plate opening direction by pushing the support arm 35 with the locking claw 51.

In the locking claw 51, the side surface on the closing plate direction side of the contact portion 61 is a sliding contact portion 61b that guides the locking claw 51 to rotate in the opening plate direction. That is, the slidable contact portion 61b has a slope shape that moves away from the support arm 35 toward the closing plate direction in a state where the base end portion of the locking claw 51 is in contact with the first rotation restricting surface 53a of the stopper 53. Is formed. For this reason, when the plate opening machine 25 moves in the closing plate direction, the locking claw 51 has the sliding contact portion 61b in contact with the corner portion of the other surface 35b on the opening plate direction side of the support arm 35, and the sliding contact. By doing so, it is rotated in the opening direction (see FIG. 9). While the plate opening machine 25 moves in the closing plate direction, the sliding contact portion 61b is slidably contacted with the support arm 35, and the contact state between the sliding contact portion 61b and the support arm 35 is maintained. The pawl 51 passes through the side of the support arm 35 without the locking surface 61 a of the contact portion 61 being interfered with the support arm 35.
Further, attachment seats 63 a are provided at positions near the base end of the locking claw 51 and the first rotation restricting surface 53 a of the stopper 53. Between these attachment seats 63a, a spring 63 as an urging member is installed. The spring 63 constantly urges the locking claw 51 so that the contact surface 61 a of the contact portion 61 contacts the one surface 35 a of the support arm 35. Therefore, the locking claw 51 rotated in the opening direction as described above rotates in the closing direction by the biasing force of the spring 63 when the sliding contact with the support arm 35 of the sliding contact portion 61b is released. Then, the locking surface 61a returns to the position where it comes into contact with the one surface 35a of the support arm 35 (see FIG. 12).

The position correction claw 52 will be described. The position correction claw 52 is formed in a substantially square bar shape, and is attached to the support plate 42 via a support shaft 52a at an intermediate portion thereof. The position correcting claw 52 is rotatable in the opening direction or the closing direction about the support shaft 52a.
The position correction claw 52 is a support plate 42 at a position opposite to the locking claw 51 with the support arm 35 interposed therebetween.
Is attached to the support arm 35 of the filter plate 12 so that its tip is outward and extends from the lateral direction with respect to the opening plate direction (FIG. 3A, (3)).
b)). Accordingly, the position correction claw 52 protrudes laterally from the base 41 of the plate opening machine 25 toward the support arm 35.
A contact portion 62 is provided at the tip of the position correction claw 52. The contact portion 62 has a contact surface 6 formed such that the side surface on the closed plate direction side extends in the open plate direction or the direction orthogonal to the closed plate direction.
2a. The position correcting claw 52 is locked to the support arm 35 by bringing the corresponding contact surface 62a into contact with the other surface 35b of the support arm 35 (see FIGS. 11 and 12).
A second rotation restricting surface 53b is provided on the other side of the stopper 53 on the position correcting claw 52 side. The second rotation restricting surface 53b is formed in a sloped shape that inclines toward the closing plate direction side toward the support arm 35 side of the filter plate 12. The contact portion 6 is provided on the second rotation restricting surface 53b.
The base end portion of the position correcting claw 52 is brought into contact with the second contact surface 62a in contact with the other surface 35b of the support arm 35. The second rotation regulating surface 53b regulates the rotation of the position correction claw 52 in the opening plate direction by contacting the base end portion of the position correction claw 52.

The position correction claw 52 is disposed in an oblique shape so as to move away from the support arm 35 in the opening direction in a state where the base end portion thereof is in contact with the second rotation restricting surface 53 b of the stopper 53. Further, the contact surface 62 a of the position correction claw 52 is substantially parallel to the other surface 35 b of the support arm 35 in a state where the base end portion of the position correction claw 52 is in contact with the second rotation restricting surface 53 b of the stopper 53. It is formed to become.
Therefore, when the plate opening machine 25 moves in the closing plate direction, the position correcting claw 52 rotates in the opening direction by contacting the base end of the position correcting claw 52 with the second rotation regulating surface 53b of the stopper 53. The contact surface 62a of the contact portion 62 is in contact with the other surface 35b of the support arm 35 in a state where the control is restricted. As a result, the plate opening machine 25 moves the filter plate 12 in the closing plate direction by pushing the support arm 35 with the position correction pawl 52 (see FIGS. 11 and 12).

In the position correction claw 52, a side surface on the opening direction side is a guide portion 62b that guides the position correction claw 52 to rotate in the closing plate direction. That is, the guide portion 62b is formed in a sloped shape that moves away from the support arm 35 in the direction of the plate opening in a state where the base end portion of the position correcting claw 52 is in contact with the second rotation restricting surface 53b of the stopper 53. Has been. For this reason, when the plate opening machine 25 moves in the plate opening direction, the position correction claw 52 is closed in the plate closing direction by the guide portion 62b coming into contact with the corner portion of the one surface 35a of the support arm 35 and sliding contact. (Fig. 6)
reference). And while the said plate-opening machine 25 moves to a plate-opening direction, this guide part 62b is the support arm 3.
5, the contact state between the guide portion 62b and the support arm 35 is maintained, so that the position correction claw 52 can prevent the contact surface 62a of the contact portion 62 from interfering with the support arm 35. , Passing through the side of the support arm 35.
Further, attachment seats 63 a are provided at positions near the base end portion of the position correction pawl 52 and the second rotation restricting surface 53 b of the stopper 53. Between these attachment seats 63a,
A spring 63 which is an urging member is installed. The spring 63 is a contact surface 62 of the contact portion 62.
The position correcting claw 52 is constantly urged so that a contacts the other surface 35b of the support arm 35. Accordingly, the position correcting claw 52 rotated in the closing plate direction as described above rotates in the opening plate direction by the biasing force of the spring 63 when the sliding contact of the guide portion 62b with the support arm 35 is released. The contact surface 62a returns to a position where it comes into contact with the other surface 35b of the support arm 35 (see FIG. 9).

When a plurality of filter plates 12 are moved to the standby position, the locking claw 51 is rotated in the opening plate direction (hereinafter, this state is referred to as “accommodating state”). Support arm 35
Must pass through these sides without interference (see FIG. 15). Therefore, the base 41 has a forcible tilting body 71 that contacts the locking claw 51 and rotates the locking claw 51 in the opening direction, and maintains the contact state with the locking claw 51. It is attached.
That is, the forced tilting body 71 includes a pressing bar 72 that is movably suspended by the support 42a on the lower surface of the support plate 42, a pressing bar 73 that is disposed on the side of the locking claw 51 that is on the opening plate side, Oshidate 7
2 and a connecting rod 74 that connects the push rod 73 (see FIG. 3C). Further forced tilting body 7
1 includes a tilting allowance plate 75 attached on the opener support frame 24 on the closing plate direction side and a tilt release plate 76 attached on the opener support frame 24 on the opening direction side (see FIG. 1). 1).
In the forced tilting body 71, when the pusher 72 comes into contact with the tilting allowance plate 75 when the plate opening machine 25 moves in the closing plate direction, the pusher 72 moves in the opening direction with respect to the support plate 42. (See FIG. 14). At this time, the connecting rod 74 and the push rod 73 are moved in the plate opening direction as the push rod 72 is moved, and the push rod 73 pushes the locking claw 51 in the plate opening direction to be in the accommodated state.
The spring 63 is weak enough that the biasing force cannot push back the pusher 72, the connecting rod 74, and the push rod 73 via the locking claw 51. Maintained in a state.
On the other hand, when the pusher 72 contacts the tilt release plate 76 when the plate opening machine 25 moves in the plate opening direction,
The pusher 72 is movable in the closing plate direction with respect to the support plate 42 (see FIG. 15).
At this time, the connecting rod 74 and the push rod 73 move in the closing plate direction along with the movement of the push rod 72, and the push rod 73 moves away from the locking claw 51, so that the locking claw 51 is moved by the biasing force of the spring 63. The containment state is released.

When a plurality of the filter plates 12 are moved to the standby position or the filtration position, the position correction claw 52 remains rotated in the closing plate direction (hereinafter, this state is referred to as “accommodating state”). ) And must pass through the sides of the support arms 35 without being interfered by them (FIG. 1).
5). Therefore, the position correction claw 52 is provided with a curved surface portion 62c at a portion where the tip of the contact portion 62 is connected to the guide portion 62b from the contact surface 62a. Furthermore, the guide part 62b is
The length L of the contact portion to the support arm 35 is set to be longer than the distance W between the support arms 35 of the adjacent filter plates 12 in the superposed state (see FIG. 15).
That is, when the position correcting claw 52 is about to pass the side of the support arm 35, the support arm 35.
The curved surface portion 62c is brought into contact with the guide portion 62b, which is gently connected from the curved surface portion 62c. Further, the length L of the guide portion 62b
Is made longer than the distance W between the support arms 35 of the filter plate 12, while the position correction claw 52 passes the side of the adjacent support arm 35, the guide portion 62 b is always attached to any one of the support arms 35. Since it comes into sliding contact, the accommodation state is maintained.

The filter press 10 is provided with a sensor that detects that the movement of the plate opening machine 25 has stopped, and a timer that measures the stop time of the movement. That is, as shown in FIG. 4, a gear 81 is mounted on a shaft 27 provided to move the switch 25, and a rotary encoder 83 that is a sensor is connected to the gear 81 via a belt 82. Has been. The rotary encoder 83 detects the movement of the plate opening machine 25 as the shaft 31 rotates. The rotary encoder 83 is electrically connected to a timer (not shown).
When the plate opening machine 25 slides in the plate opening direction and moves the filter plate 12 to the standby position, the filter plate 12
The movement is stopped by contacting the press plate 20 or the filter plate 12 that has been moved to the standby position before the filter plate 12, and accordingly, the opening machine 25 that moves the filter plate 12 also has the same. As a result, it cannot move in the plate opening direction and stops moving. When the plate opening machine 25 stops moving in this manner, the movement is transmitted to the shaft 27 via the chain 28 and the sprocket 26, and the rotation of the shaft 27 is stopped. Then, the rotary encoder 83 detects the movement stop of the plate opening machine 25 due to the rotation stop of the shaft 27. When the movement stop detection signal is transmitted to the timer, the timer starts measuring time, and when the measured time reaches a predetermined value, sends a signal to the control unit of the filter press 10, The controller reversely rotates the motor, and the plate opening machine 2
5 is slid in the closing plate direction.
The plate openers 25 arranged on both sides of the filter plate 12 are connected to a chain 28 and a sprocket 26, respectively. Further, since the sprocket 26 is connected by a single shaft 27, they move in conjunction with each other. It is configured.
The sensor is not limited to the rotary encoder 83, but the plate opening machine 25.
Various sensors such as an optical sensor, a pressure sensor, a vibration sensor, and the like may be used as long as the movement of the sensor can be detected.

The movement of the filter plate 12 by the plate opening machine 25 will be described.
When opening the plurality of filter plates 12 in the polymerized state by the filter press 10, the moving operation of the plate opening machine 25 is a first operation of moving the target filter plate 12A in the opening direction to move it from the filtration position to the standby position. In the second step, after the target filter plate 12A is moved to the standby position, the adjacent filter plate 12B adjacent to the target filter plate 12A at the filtration position is moved in the closing plate direction to be the next movement target. Divided into processes. Then, the first process and the second process are repeated, and all the filter plates 12 are moved from the filtration position to the standby position.

The first process will be described in detail.
As shown in FIG. 4, the pair of opening machines 25 move to both sides of the target filter plate 12 </ b> A, and the locking claws 5 are moved.
One locking surface 61a is brought into contact with one surface 35a of the support arm 35, and the target filter plate 12A is pushed. Then, the plate opening machine 25 starts moving in the plate opening direction, and the target filter plate 12A starts to move to the standby position as the plate opening machine 25 moves.
As shown in FIG. 5, when the target filter plate 12A is moved to the standby position by the plate opening machine 25,
The position correction claw 52 contacts the support arm 35 of the filter plate 12 that has been moved to the standby position before the target filter plate 12A.
As shown in FIG. 6, the position correction claw 52 moves along the filter plate 1 as the plate opening machine 25 moves in the plate opening direction.
When the guide portion 62b is brought into sliding contact with the second support arm 35, the guide portion 62b is rotated against the urging force of the spring 63 to be in the accommodated state. Then, when the position correcting claw 52 in which the guide portion 62b is slidably contacted with the support arm 35 and the accommodation state is maintained passes through the side without being interfered with the support arm 35, the plate opening machine 25 is opened. Continue moving in the direction.
As shown in FIG. 7, the plate opening machine 25 moves in the opening direction until the target filter plate 12A comes into contact with the filter plate 12, and the movement stops as the target filter plate 12A stops moving due to the contact. To do. The stop is detected by the rotary encoder 83, and when the stop time of the movement reaches a predetermined value by a timer, the motor is reversely rotated, and the plate opening machine 25 starts moving in the closing plate direction. The process of 1 ends.

The second process will be described in detail.
As shown in FIG. 8, in the plate opening machine 25 that moves from the standby position of the filter plate 12 to the closing plate direction, the length L of the guide portion 62 b of the position correcting claw 52 is greater than the distance W between the support arms 35 of the filter plate 12. Since the position correction claw 52 is maintained in the accommodated state, the position correction claw 52 passes through the side without being interfered with the support arm 35 of the target filter plate 12A. In addition, after passing the side of the support arm 35, the position correction nail | claw 52 rotates with the urging | biasing force of the spring 63, and returns to the original state.
As shown in FIG. 9, the plate opening machine 25 that has moved to a position near the adjacent filter plate 12B first brings the sliding contact portion 61b of the locking claw 51 into contact with the support arm 35 of the adjacent filter plate 12B.
As shown in FIG. 10, when the plate opening machine 25 moves in the closing plate direction while the sliding contact portion 61 b of the locking claw 51 is in contact with the support arm 35, the locking claw 51 is supported by the support arm of the sliding contact portion 61 b. With the sliding to 35, it rotates against the urging force of the spring 63 and enters the accommodated state.
As shown in FIG. 11, when the plate opening machine 25 moves in the closing direction as it is, the latching claw 51 in the accommodated state passes through the side without being interfered with the support arm 35, and after the passage, the spring 63 It is rotated by the urging force and returns to the original state.
On the other hand, the plate opening machine 25 that moves in the closing direction moves the contact surface 62a of the position correction claw 52 to the support arm 35.
, The adjacent filter plate 12B is pushed in the closing plate direction through the support arm 35.

The adjacent filter plate 12B may move to an unauthorized position, which is an unsuitable position, due to vibration transmitted through the filter cloth extension fitting 21, peeling of the target filter plate 12A, or the like. The adjacent filter plate 12B depicted in FIGS. 10 and 11 represents the filter plate at the incorrect position. When the filter plate 12 is in an improper position, when the plate openers 25 arranged on both sides of the filter plate 12 move in cooperation with each other, even if the plate opener 25 on one side grabs the support arm 35 of the filter plate 12, There is a possibility that the opening machine 25 on the other side may not be able to grip the support arm 35 of the filter plate 12.
As shown in FIG. 12, the adjacent filter plate 12B pushed in the closing plate direction by the plate opening machine 25 is pressed against the filter plate 12 adjacent to the adjacent filter plate 12B, so that it moves from an unauthorized position to a position suitable for movement. It is corrected. When the adjacent filter plate 12B is pressed against the filter plate 12, the pressing stops the movement for correcting the position of the adjacent filter plate 12B, and the movement of the plate opening machine 25 is stopped accordingly.
As shown in FIG. 13, when the stop of the movement for correcting the position of the adjacent filter plate 12B is detected by the rotary encoder 83, and when the stop time has reached a predetermined value, the motor reverses. The plate opening machine 25 starts to move in the plate opening direction. Here, the second process ends, and the first process is resumed with the adjacent filter plate 12B as the target filter plate 12A. Since the adjacent filter plate 12B is corrected in position as described above, the target filter plate 12
When moved as A, the locking claw 51 comes into contact with the support arm 35 without any trouble.

As shown in FIG. 14, after the first process and the second process are repeated, and all the filter plates 12 have moved to the standby position, the plate opening machine 25 that moves in the plate opening direction is pushed against the tilting allowance plate 75. The locking claw 51 is tilted by bringing the collar 72 into contact and moving to a housed state.
As shown in FIG. 15, the plate opening machine 25 in which the locking claw 51 is in the housed state moves in the plate opening direction while passing through the side of the filter plate 12 in the standby position. When passing the side of the filter plate 12, the locking claw 51 is maintained in the accommodated state by the forced tilting body 71, so that it passes without being interfered with the support arm 35, and the position correction claw 52 It passes without being interfered by the support arm 35 while being maintained in the accommodated state by sliding contact with the support arm 35. Then, the plate opening machine 25 that has passed by the side of the filter plate 12 at the standby position releases the tilt of the locking claw 51 by moving the push release 72 in contact with the tilt release plate 76, so that the filtration process can be performed. Wait for a while.

The conceptual diagram which shows the filter press of embodiment. (A) is a perspective view which shows a filter plate, (b) is a sectional side view which shows a filter plate. (A) is a front sectional view showing a plate opening machine, (b) is a side view showing the plate opening machine, and (c) is a plan view showing the plate opening machine. The top view which shows the state which the opening machine grabbed the target filter plate. The top view which shows the state which an open plate machine moves a target filter plate. The top view which shows the state which a position correction nail | claw rotates. The top view which shows the state which the plate opening machine moved the target filter plate. The top view which shows the state which an open plate machine approaches an adjacent filter plate. The top view which shows the state which the latching claw contacted the adjacent filter plate. The top view which shows the state which a latching claw rotates. The top view which shows the state which an open plate machine corrects the position of an adjacent filter plate. The top view which shows the state which the plate opening machine corrected the position of the adjacent filter plate. The top view which shows the state by which the latching claw was latched by the support arm. The top view which shows the state by which the latching claw was tilted by the forced tilting body. The top view which shows the state which cancels | releases the inclination of the latching claw by a forced tilting body.

DESCRIPTION OF SYMBOLS 10 Filter press 12 Filter plate 12A Target filter plate 12B Adjacent filter plate 13 Filter cloth 16 Filter plate support frame 24 Open plate machine support frame 25 Open plate machine 35 Support arm 41 Base 51 Locking claw 52 Position correction claw 53 Stopper 61 Contact part 61b Sliding contact portion 62 Contact portion 62b Guide portion 63 Spring as urging member 71 Forced tilting body 83 Rotary encoder as sensor

Claims (4)

A plurality of filter plates are slidably supported via support arms projecting on both sides of the filter plate with respect to the filter plate support frame provided in the apparatus. A filter cloth is interposed between the filter plates, and the filter plates are closed so that a plurality of filter plates are polymerized to filter the liquid to be treated. In the cleaning step after the filtration step, In a filter press device configured to remove sludge accumulated on the filter cloth by filtering the liquid to be treated by opening the filter plates,
An opener support frame is disposed on the outer side of the filter plate support frame, and the opener is attached to the opener support frame.
The opening machine is attached to the base supported by the opening machine support frame so as to be slidable in the same direction as the sliding direction of the filter plate, and to be rotatable to the base. A locking claw, and
About the sliding direction of the filter plate and the opening machine, the direction between the filter plates is closed and the polymerization state is set as the closed plate direction, and the direction in which the filter plates are opened is the open plate direction.
The locking claw is arranged so that the tip thereof is outward with respect to the support arm of the filter plate and extends from the lateral direction with respect to the opening plate direction,
On the base, a biasing member that biases the locking claw so that a contact portion provided at a tip of the locking claw contacts a surface of the support arm of the filter plate on the closed plate direction side. When the stopper path for locking the locking claw in a state where the abutting portion is in contact with the support arm is provided,
A first rotation restricting surface is provided on one side portion of the stopper on the side of the locking claw so as to incline toward the opening plate direction side toward the support arm side of the filter plate. The locking claw in a state in which the base end portion is in contact with the restriction surface is disposed in an oblique shape so as to move away from the support arm toward the closing plate direction,
When the opening machine slides in the closing direction, the locking claw contacts the support arm and rotates the locking claw, and the contact portion interferes with the support arm. without such locking pawl passes the side of the support arm, and the sliding contact portion is provided to maintain the contact state to the support arm,
Further, the base is in contact with the locking claw when the platen machine moves in the closing plate direction after all the filter plates are moved after the filter plate is moved by the platen machine, The locking claw is rotated in the opening direction, and when the opening machine slides in the opening direction, the locking claw is moved to the side of the support arm without interfering with the support arm of the filter plate. A filter press device, wherein a forcible tilting body that maintains a contact state with the locking claws so as to pass through is movably attached . In addition to the base and the locking claw, the plate opening machine further includes a position correcting claw attached to the base so as to be rotatable.
The position correction claw is an opposing position of the locking claw, the tip of the position correction claw is outward from the support arm of the filter plate, and is arranged to extend from the lateral direction with respect to the opening plate direction,
In the base, an urging member that urges the position correction claw so that a contact portion provided at a tip of the position correction claw abuts on a surface of the support arm of the filter plate on the plate opening direction side; and stopper path is provided in which the contact portion is engaged with the position correction nail in a state of contact with the support arm,
When the plate opening machine slides in the plate opening direction, the position correction claw contacts the support arm to rotate the position correction claw, and the contact portion does not interfere with the support arm. The filter press device according to claim 1, wherein a guide portion that maintains a contact state with the support arm is provided so that the position correction claw passes through the side of the support arm. The filter press according to claim 2 , wherein the guide portion of the position correcting claw is set such that a length of a contact portion with the support arm is longer than a distance between support arms of adjacent filter plates in a superposed state. apparatus. A sensor for detecting that the movement of the plate opening machine has stopped during the plate opening operation, and a timer for measuring the stop time of the movement are provided. Based on the detection result by the sensor and the measurement result by the timer The filter press device according to any one of claims 1 to 3 , wherein when the movement stop of the plate opening machine is detected, the moving direction of the plate opening machine is reversed.