JPS6372311A - Clamping method for filter press and its apparatus - Google Patents

Abstract

PURPOSE:To prevent the leakage of sludge with sufficiency and equilibrium of clamping, by transferring a mobile truck equipped with a clamping cylinder to the rear end of a filter plate group after framing the filter plate group and providing a fixing fitting capable of engaging with the fitting part of a main beam to the position of the rear part of the mobile truck. CONSTITUTION:A filter plate group B is contracted to a fixing frame 1A of the other hand via rollers 21 and a link mechanism. Just thereafter a driving apparatus 10 equipped to a mobile truck 4 is operated to transfer the truck 4 by the rolling of rollers 21 set on main beams 2 in such a direction that the filter late group B is closed. At a point of time when the truck 4 is transferred until the defined position in the closing direction, metal fittings 6 are inserted into fitting parts 3 of main beams 2 by extending and operating the fixing apparatuses 5 actuated with oil-pressure cylinders arranged to the rear part face of the truck 4. Just after a clamping cylinder 16 is pressed and operated to closely sticking the filter plate group B and this is completely locked with the reaction. The extending operation of the clamping cylinder 16 is reperformed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to a method for tightening a filter press that is operated when attaching and detaching a filter cloth sandwiched between filter plates, and improvements to the device. It is.

[Conventional technology]

Conventional tightening methods and devices for this type of filter press are disclosed in, for example, Japanese Utility Model Publication No. 56-33619;
JP-A-59-22614, JP-A-59-6231
6, Japanese Unexamined Patent Publication No. 59-32911, etc. Although these tightening devices are not shown, none of them had a structure that did not provide sufficient strength to the main beam.

[Problem that the invention seeks to solve]

Due to the above configuration, the conventional filter press tightening method and device have the following problems. In other words, the main beam does not have sufficient strength in either case,
There was a tendency for the main beam to warp or bend when tightening. Therefore, the tightening force was insufficient, resulting in sludge leakage.

[Means for solving problems]

This invention solves the above-mentioned problems of the prior art by providing a main beam with a width that increases its thickness and providing a fitting part for engaging a fixing fitting in the middle of the main beam radius. Another object of the present invention is to provide a method and device for tightening a filter press, in which the main beam has sufficient strength, the locking mechanism of the fixing fittings is strengthened, and sludge leakage can be eliminated by sufficient and balanced tightening. . The feature of this invention is that a pair of main beams are arranged on both sides of the front and rear fixed frames, and a large number of filter plates are arranged on the main beams so that they can be expanded and contracted in the longitudinal direction via rollers and link mechanisms. A method and device for tightening a filter press, in which the filter press is suspended on the frame) and the filter plate is reduced to the one fixed frame side to close the frame, and the filter press is closed. Immediately after,
A moving process of positioning the movable trolley disposed on the main beam near the rear end of the filter plate, a locking process of making the moved movable trolley unable to move back near the rear end of the filter plate, and A tightening operation is performed on the fire by a tightening step of finally closing the filter plate by expanding a tightening cylinder disposed between the filter plates and disposed on the movable cart.
In addition, a fixing device is provided at the rear of the movable cart placed on the main beam, and a fixing bracket that is movable laterally is engaged with the fitting part placed on the main beam. I have tried tightening the filter plate mentioned above.

[Effect]

With the above configuration, a fixing device is provided at the rear of the movable cart placed on the main beam, and a fixing bracket that can be moved laterally by this fixing device is attached to the fitting part placed on the main beam. Immediately after the frame-closing process in which each filter plate in the open frame is contracted to one of the fixed frames via rollers and a link mechanism, When the movable trolley disposed on the filter plate is moved to the vicinity of the rear end of the filter plate, the fixing metal fittings arranged at the rear of the trolley will match with the fitting portion of the main beam. Therefore, if the fixing device is operated at this point and the fixing metal fittings are engaged with the respective fitting parts perpendicular to the longitudinal direction of the main beam, these fitting parts will be attached to the thickened main beam. Since it is disposed at an intermediate position, it is possible to completely lock the above-mentioned movable trolley in a state where it cannot be retreated. When a completely locked state is obtained, the main beam has sufficient strength to extend the tightening cylinder of the mobile cart and finally close each filter plate. Therefore, the aspect of complete locking of the fitting portion of the above-mentioned fixing fittings is easily strengthened, and as a result, the tightening of each filter plate is also sufficient and balanced, and sludge leakage etc. can be reliably eliminated.

〔Example〕

Embodiments of the present invention will be described below with reference to the accompanying drawings.

1 to 5 show a first embodiment of the present invention.

To explain the tightening device of the filter press in this embodiment, first, a fixed frame lA1 is attached to the front and rear positions in the longitudinal direction.
A pair of left and right main beams 2 are arranged in parallel on both sides of the fixed frames IA and IB, and a large number of filter plates 19 are mounted on the main beams 2, and each shaft portion 20 on both sides of the upper The filter plate 1 is suspended by a filter press that can be expanded and contracted in the longitudinal direction by transferring the rollers 21 attached to the rollers 21 and connecting the link mechanisms 22 on both sides of the lower part.
9 has a loose head 17 equipped with a tightening cylinder 16 attached to the rear center band to form a series of filter plate groups BK. A motor 11 is arranged, and a shaft (not shown) perpendicular to the main beam 2 is rotatably arranged at the lower end position near the bottom of the motor 11, and a shaft (not shown) that is perpendicular to the main beam 2 is rotatably arranged at both ends of the shaft. Binion 1 that meshes with rack 14
5, and a gear 12.130 fitted on the shaft and the shaft of a motor 11, and a gear 12.130 is engaged and rotated to perform a longitudinal movement operation. The trolley 4 is suspended so as to be self-propelled by the rolling of rollers 21 attached to the shaft portions 20 on both sides thereof, and the filter plate group B in this embodiment is reduced to the above-mentioned one fixed frame IA side to close the frame K. In the tightening device for the filter press, in order to prevent the movable cart 4 from moving back at a position near the rear end of the filter plate group B during the tightening operation, the following complete lock is achieved at this position. Each means is configured.

In other words, the pair of main beams 2 installed on both sides of the fixed frames IA and IB have a plurality of inner beams parallel to each other in the longitudinal direction at upper and lower positions inside one main beam main body 2o, as shown in FIGS. 1 and 5. The material 2a is welded. This inner beam material 2a is made of the same material as the main beam body 2o (for example, a solid metal material).
It is formed in large numbers. Further, outer beam members 2b shown below are welded to the upper and lower outer positions of the main beam main body 2o so as to be parallel to the longitudinal direction. This outer beam material 2b has two internal hollow channels arranged at the same height as the inner beam material 2a and parallel to each other in the longitudinal direction, and then the external vertical surfaces of both channels are covered with the outside. It is made by welding and integrating strip-shaped metal plates that fit together. Therefore, the main beam 2 is a composite beam with increasing thickness and width, so that it can maintain sufficient strength in the longitudinal direction by sliding. According to this aspect, a fixing metal fitting 6, which will be described later, can be fitted into the inner beam 2a at a midway position of the inner beam 2a of the main beam 2, that is, at a position corresponding to the rear of the section where the movable trolley 4 stops when the frame is closed. The vertical groove-shaped fitting part 3 is formed by vertically removing the inner beam 2a at this position so as to fit the fixing fitting 6, so that only this position becomes a recess.

In addition, a pair of left and right fixing devices 5 formed of hydraulic cylinders or the like are installed at both upper sides of the rear side of the movable cart 4, which is arranged on the main beam 2 so as to be able to extend and contract back and forth.
Each upper end thereof is pivotally supported by a support shaft 7, and is arranged in the shape of a square lattice so that it can swing laterally. The tip of each piston rod of this fixing device 5 is pinned on each side to a pair of square rod-shaped fixing fittings 6 on the left and right, which are swingably hung vertically on both sides of the rear surface of the movable cart 4 by means of an upper support shaft 8. 9
), and the fixing metal fitting 6 can be pivoted by extending or shortening each piston rod. Therefore, when the above-mentioned fixing device 5 is extended when the movable trolley 4 reaches the closed frame position, each fixing metal fitting 6 swings around the upper support shaft 8, and the main beam 2 on each side is It is configured such that it can be fitted into the fitting portion 3 of the movable trolley 4, thereby maintaining the movable trolley 4 in a completely locked state in which it cannot move backward. The movable trolley 4 connects the piston rod 16a of the tightening cylinder 16 disposed in the center band on the front side to the loose head 1.
7, the filter plate group B is loosely connected to the loose connection means 18, which is a hook-shaped metal fitting attached to the center band of the rear surface of the loose head 17, and the filter plate group B is
It smoothes the responsiveness of expansion and contraction, and is used as a tightening device for the filter plate in a filter press as a whole.

When performing filtration and squeezing operations in the filter plate group B of the filter press equipped with the tightening device configured as described above, first, immediately after the frame closing process for the filter plate group B, the movement of the A moving step of positioning the cart 4 near the rear end of the filter plate group B, and moving the moving cart 4 moved as described above to the filter plate group B.
The filter plate group B is finally closed by a locking process that makes it impossible to retreat at a position near the rear end and by extension of the tightening cylinder 16 located between the movable trolley 4 and the filter plate group 8 and disposed on the movable trolley 4. A tightening operation leading to filtration and squeezing is performed by the tightening step.

First, the first tightening step is performed as follows. That is, until then, the filter plate group B, which was in an open state as shown in Fig. 4,
Immediately after the frame closing step of shrinking the filter plate group B toward one side of the fixed frame IA via the rollers 21 and the link mechanism 22, a drive equipped on the movable trolley 4 is used to reduce the filter plate group B to one side in a tight state. When the device 10 is operated, a shaft (not shown) is connected to the filter plate group B via the motor 11 and gears 12 and 13.
Start rotating in the direction of reduction. Therefore, the movable truck 4 is moved to the main beam 2 through this engagement K between the pinion 15 fitted on the shaft and the rack 14 arranged at the bottom of the main beam 2.
The rolling of the upper roller 21 moves the filter plate group B in the direction of closing the frame, thereby making it possible to easily reduce the filter plate group B toward one of the fixed frames IA shown in FIG.

Next, the second four-step process is performed as follows.

In other words, when the movable trolley 4 has moved to the specified position R in the frame closing direction (through the above process), the fixing device 5 using a hydraulic cylinder installed on the rear surface of the trolley 4 is extended, as shown in Figure tX1. When operated, the fixing metal fittings 6, which were previously located in a direction away from the left and right main beams 2, are pushed and swung toward the main beam 2 in a vertical manner using the support shaft 8 as a fulcrum. At this time, a fitting portion 3 formed by a vertical groove-shaped recess is located at the position of the main beam 2 where the fixing metal fitting 6 is swung in a vertical manner.
, each fixing metal fitting 6 can be fitted into the fitting portion 3 on its side. Therefore, immediately after that, the tightening cylinder 16 is operated to suppress and the reaction force that brings the filter plate group B into close contact makes it possible to completely lock the movable cart 4 at the above-mentioned prescribed position.

In this case, the main beam 2 has beam members 2a on both sides of the main beam body 2o,
2b is welded to form a composite beam having a width in the direction of increasing thickness, it has sufficient strength and can easily support the above-mentioned complete lock mode.

Further, the third tightening step is performed as follows. When it is confirmed that the movable trolley 4 is locked in the specified position by the above process, if the tightening cylinder 16 is continued to be extended, the filter plate group B will be attached to the main beam 2. Due to the complete locking support provided by the engagement of the fixture 6 with the fitting portion 3, the respective filter plates 19 are brought into a secure, pressure-welded state of close contact. Therefore, at this point, the tightening operation for the final closing of the filter plate iB can be completed, and if slurry etc. is supplied into the filter plate group B in this state by the crack, then K.
Slurry dewatering operations such as filtration and squeezing can be carried out smoothly and easily.

6 and 7 show a second embodiment of the invention. The tightening device of the filter press in this embodiment has a fitting part 3 of a movable cart 4, a fixing device 5, a fixing metal fitting 6, and the fitting part 3 engaged with a penetration hole at a prescribed position on the side of the main beam 2. The only difference from the first embodiment is the structure in which the crown is movably mounted so as to fit together, and the other parts are constructed exactly the same as the first embodiment. Therefore, descriptions of similar components will be omitted.

As shown in FIGS. 6 and 7, the filter press tightening device in this second embodiment moves the movable cart 4 backward at a position near the rear end of the filter plate group B during the tightening operation. In order to make it impossible, the following means for achieving complete locking are arranged in this position.

That is, the pair of main beams 2 installed on both sides of the fixed frames IA and IB move at least while the movable cart 4 moves from the open frame to the closed frame via the fitting part 3 on the upper surface of each main beam main body 2o. A removable penetration hole 2c for locking the movable cart 4 is provided at a prescribed position in the center of the height of the main beam. The fitting part 3 has a substantially h-shaped longitudinal section,
Due to the shape in which the upper end portion of this h is bent into a planar shape by a slight amount toward the inside of the main beam 2, it is fixed to the back surface of the movable cart 4 by means such as welding, and almost the upper half of the main beam 2 is bent. It is crowned on the main beam 2 so as to straddle it.

Then, at the mid-height position of the fitting portion 3, that is, at the mid-height position of the main beam 2, and when the movable trolley 4 is closed.

Both the main beam main body 2o and the fitting part 3, which are at the rear of the stopping position, have a locking hole 3& and a penetration hole 2c on the inner and outer surfaces for inserting a round bar-shaped fixing fitting 6, which will be described later. It is installed so that it passes through.

Next, a pair of left and right fixing devices 5 formed inside the fitting part 3 (by hydraulic cylinders, etc.) are symmetrically arranged at both sides of the middle height on the rear side of the movable trolley 4. Each piston of this fixing device 5 is formed into a round rod shape that can be inserted into the locking hole 3a of the fitting portion 3 described above. Therefore, when the fixing device 5 is extended when the movable trolley 4 reaches the frame-closed position, each fixing metal fitting 6 engages with its respective fitting portion 3 so that it can be held in the penetration hole 2c of the main beam 2. It is inserted into the stop hole 3a, thereby maintaining the movable trolley 4 in a completely locked state in which it cannot move backward.

Also when performing filtration and squeezing operations in the filter plate group B of the filter press equipped with the tightening device in this second embodiment,
Except for locking the mobile cart 4 at the specified position of the closed frame, the first
This is exactly the same as the example.

Explanation regarding the same scope will be omitted.

The locking process in this embodiment is performed as follows.

That is, when the movable trolley 4 has moved to the specified position in the frame closing direction through the above steps, as shown in FIG. , when the fixing metal fittings 6, which were previously separated from the left and right main beams 2, protrude outward due to piston operation. At this time, since a locking hole 3a is formed at the position of the fitting part 3 from which the fixing metal fitting 6 protrudes, each of the fixing metal fittings 6 is connected to its respective locking hole 3a and the penetration hole 2c of the main beam 2. When inserted, it becomes K. Therefore, immediately after that, the tightening cylinder 16 is operated to suppress the filter plate group B, and the reaction force causes the movable cart 4 to be completely locked at the above-mentioned specified position. In this case, the main beam 2 has sufficient strength and completes the above-mentioned structure because it has a lock structure and has no structural iron deficiency except for the purchase hole 2c in the center of the txtx. The lock mode can be easily supported.

〔Effect of the invention〕

This invention is a filter press in which a pair of main beams are arranged on both sides of a front and rear fixed frame, and a number of filter plates are suspended on the main beams so that they can be expanded and contracted in the longitudinal direction via rollers and link mechanisms. In the method and device for tightening a filter press in which the filter plate is reduced to the one fixed frame side to close the frame, immediately after the process of closing the frame of the filter plate, the filter plate is closed on the main beam. a moving step of positioning the movable cart disposed on the filter plate near the rear end of the filter plate; a locking step of making the movable cart disposed in the above manner impossible to move back at a position near the rear end of the filter plate; 1) In addition, the tightening operation is carried out sequentially by a tightening process in which the filter plate is finally closed by the extension of the tightening cylinder disposed on the movable cart. A fixing device is provided at the rear of the movable trolley placed on the beam, and the fixing metal fitting, which can be moved laterally by this fixing device, is fitted into the fitting part installed on the main beam to attach the above filter. The feature is that the plate is tightened. Therefore, in this invention, the main beam has a width that increases its thickness, and a fitting part for engaging the fixing metal fittings is provided in the middle of the width of the main beam, so that the main beam has sufficient strength and the fixing metal parts can be locked. The aspect is also strengthened, and sludge leakage can be easily and reliably eliminated by sufficient and balanced tightening.

Further, since the main beam does not require additional reinforcement for the tightening device, the present invention can also achieve a cost reduction effect.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a filter press equipped with a tightening device according to a first embodiment of the present invention, FIG. 2 is a side view of the filter press with a portion removed, and FIG. FIG. 4 is a side view showing the filter plate in an open state with some parts removed. FIG. 5 is a detailed perspective view of section C in FIG. A vertical sectional view showing the main part of the device at a position corresponding to line 0A-A in Figure 1, Figure 7 (0) and (B) are detailed views of section D in Figure 6, and Figure 7 (H). ) is a perspective view showing the relationship between the main beam and the fitting part, and FIG. 7(b) is a perspective view of a part of the main beam. IA, IB, Fixed frame 2.・、Main beam 3・
...Fitting part 3a...Latching hole 4...Moving trolley 5...Fixing device 60. ·securing bracket
19, filter plate 21...roller
22...Link mechanism B...Filter plate group

Claims (1)

[Claims] 1. A pair of main beams are arranged on both sides of the front and rear fixed frames,
This is a filter press in which a number of filter plates are suspended on the main beam so that they can be expanded and contracted in the longitudinal direction via rollers and link mechanisms, and the filter plates are retracted to the one fixed frame side to close the frame. Immediately after the step of closing the filter plate, there is a moving step of positioning a movable cart disposed on the main beam near the rear end of the filter plate; The filter plate is finally removed by a locking process that makes it impossible for the movable trolley to move back at a position near the rear end of the filter plate, and by extension of a tightening cylinder installed on the movable trolley between the movable trolley and the filter plate. A method for tightening a filter press, characterized in that tightening operations are sequentially performed through a tightening step in which the frame is closed completely. 2 Place a pair of main beams on both sides of the front and rear fixed frames,
This filter press has a large number of filter plates suspended on this main beam so that they can be expanded and contracted in the longitudinal direction via rollers and link mechanisms, and the filter plates are expanded and contracted toward the one fixed frame to close the frame. In the tightening device for the filter press, a fixing device is provided at the rear of the movable cart disposed on the main beam, and a fixing fitting that can be moved laterally by the fixing device is attached to the main beam. A tightening device for a filter press, characterized in that the filter plate is tightened by engaging with a fitting portion arranged on a beam. 3. The filter press according to claim 2, characterized in that the fitting portion of the main beam is formed in a recess, and the fixing fitting is fitted into and locked in the recess. Tightening device. 4. The filter press according to claim 2, wherein the fitting portion of the main beam is formed into a locking hole, and the fixing fitting is inserted and locked into the locking hole. Tightening device. 5. The tightening device for a filter press according to any one of claims 2 to 4, wherein the pair of main beams are formed into composite beams having a thickness in the beam width direction.