JPS6232580Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for opening a filter plate in a filter press.

[Prior art]

As a conventional filter plate opening device of this type, there is a claw box equipped with a pushing claw and a holding claw that face each other and rotate to fall down and stand up, such as the one described in Japanese Utility Model Publication No. 56-37769. is connected to a chain and runs on a rail, and the filter plate located between the claws is hooked and opened by the pushing claws, and it can be moved on the claw box as a separate body from the pushing claws. There is a device in which a movable lid is provided and the movable lid moves in contact with the engaging body, thereby controlling the lowering and raising of the push claw from the outside.

In the above-mentioned conventional device, the pushing claw is moved at the moving end of the filter in the closing direction by an engaging body that comes into contact with the movable lid or its protrusion and positions the movable lid on the fallen pushing claw. is inserted into the claw box, and similarly, the movable lid is moved at the moving end on the opening side of the filter to raise the pusher claw from the claw box, so the running direction of the claw box is reversed. When the movable lid moves due to inertia force, there is a risk of malfunction such as the push claw suddenly standing up at an undesirable time, or getting caught on the movable lid while lying down and becoming unable to stand up. In addition, the movable lid must be slidably mounted on the claw box, which has disadvantages such as a large number of parts and a complicated structure.

[Purpose of invention]

The present invention was developed in view of the drawbacks of the conventional devices as described above, and by improving the means for restraining the pusher claws in the collapsed state, there is no need for a movable lid to control the lowering and raising of the pusher claws. To provide a plate opening device for a filter plate in a filter press, which can switch and maintain a push pawl in an upright position and a collapsed position even when the filter press is in use, ensures plate opening operation and plate opening preparation operation, and has a simpler structure. The purpose is to

[Structure of the idea]

In order to achieve the above object, in the present invention, a claw box is provided with a pushing claw and a holding claw facing each other, which rotate to fall down and rise, and is connected to a chain and runs on a rail, and is located between the claws. In a filter plate opening device for a filter press in which the filter plate is opened by hooking the filter plate with a pusher claw, the tip of the claw can be superimposed above the tip of the pusher claw to cause the pusher claw to fall down. The pawl box is provided so as to be movable in the direction away from the push pawl depending on the position, and a means is provided for constantly biasing the pawl in a direction toward the press pawl, and the pawl comes into contact with the press pawl to cause the press pawl to move. When the claw is laid down, the tip of the pushing claw sneaks under the tip of the claw, and the claw concealing member that restrains the pushing claw in the fallen state is moved to an appropriate position at the end of the movement trajectory of the claw box in the opening direction. It is provided on the fixed part.

[Effect of idea]

By adopting the above-mentioned configuration, the opening operation and opening preparation operation can be performed reliably without providing a movable lid or a claw raising member, etc. in the conventional device, and the structure can be further simplified, and the movable lid can be moved. There is no risk of malfunction due to inertial force, which is the case when using this method, and it is possible to achieve effects such as reliable operation.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the accompanying drawings.

1 and 2 show the main parts of the plate-opening device. Reference numeral 1 denotes a pawl box that is connected to chains 2a and 2b and runs on a rail 3. They are housed facing each other.

The wheels 6, 6 on the front and rear lower surfaces of the claw box 1 roll on the rail 3 and pull the chain 2a, thereby moving the claw box 1 in the opening direction, which is the left and right in FIGS. 1 and 2. By moving the chain 2b and pulling the chain 2b, the claw box 1 can be moved in the right direction in FIGS. 1 and 2, that is, in the opening direction.

The pusher claw 4 has an upright position where the tip protrudes upward from the upper surface of the claw box 1, as shown by the solid line in FIG. so that it can be rotated to the lodging position.
It is pivotally mounted in the claw box 1 with a shaft 7 in the front and rear direction,
When it reaches the upright position and when it is fully laid down, the pusher claw 4 comes into contact with stopper pins 8 and 8' protruding inside the claw box 1, respectively, so that further rotation is prevented. It's getting old.

Reference numeral 11 denotes a compression spring which is a biasing means for the pushing pawl 4 provided in the pawl box 1, and one end of which is connected to a retainer 13 which is pivotally mounted inside the pawl box 1 with a shaft 12 in the front-rear direction.
and a retainer 15 whose other end is pivotally mounted with a longitudinal shaft 14 extending to the lower left of the pusher claw 4.
The push claws 4 are always urged toward the upright position.

The claw 5 is pivoted to a longitudinal shaft 17 that is slidably fitted into a long hole 16 in the left and right direction bored in the front and rear walls of the claw box 1, and is in the upright position shown by the solid line in FIG. The push pawl 4 can be rotated around the shaft 17 to the same position shown by the phase image line, and the push pawl 4 can be rotated along with the shaft 17.
It is possible to move near and far.

When the pawl 5 is in the upright position closest to the push pawl 4, the lower edge of its tip 5a enters the rotation locus of the tip 4a of the press pawl 4, and from this state, the press pawl 4 moves forward. By infiltrating the tip portion 4a below the tip portion 5a, the tip portion 5a overlaps above the tip portion 4a, and the pusher claw 4 is prevented from rotating back to the upright position, and the pusher claw 4 is He is now being restrained in a prone position.

In addition, the tip of the push claw 4 when it is in the upright position,
The distance d ₀ from the tip of the claw 5 in the upright position when closest to the pressing claw 4 is smaller than the thickness d ₁ of the fixed arm 28 of the filter plate 26 to be opened, which will be described later.
For example, it is preferably about 30% to 60% of the plate thickness _d1 .

Further, the movable range of the shaft 17 in the elongated hole 16, that is, the horizontal movable range of the claw 5 with respect to the claw box ₁ , is at the upright position closest to the pushing claw 4 at the plate thickness d1 of the fixed arm 28. It is preferable that the size is slightly larger than the sum of the overlapping distance d ₂ of both the tips 5a and 4a when the tip 4a of the pressing claw 4 is inserted below the tip 5a of the claw 5.

Reference numeral 18 denotes a stopper pin in the front-rear direction that is in contact with the front and rear walls of the claw box 1, and when the claw 5 reaches the upright position, the base end of the claw 5 comes into contact with it and prevents further movement of the claw 5. It is designed to prevent rotation.

19 is a compression spring, one end of which is connected to a retainer 21 which is pivotally mounted inside the claw box 1 with a shaft 20 in the front and back direction;
and the other end is attached to a retainer 23 which is pivotally attached to the lower part near the tip of the claw 5 with a shaft 22 in the front-rear direction.
The claws 5 are fixedly attached to each other, and the claws 5 are constantly biased in the direction of standing up around the shaft 17 and in the direction of approaching the pusher claws 4 together with the shaft 17.

FIG. 3 schematically shows the entire filter press equipped with the plate opening device of the present invention, in which a large number of filter plates 26 are suspended between the left and right fixing members 24 and 25 so as to be slidable in the left and right direction. ing.

Among each filter plate 26, three adjacent filter plates 26 are connected to each other by a chain 27 to form a set, and the right filter plate 26 in each set has a plate-shaped fixing plate arranged in the vertical direction. An arm 28 is fixed, a contact body 29 is fixed to the central filter plate 2, and the upper end of a rotating arm 30 is pivoted to the left filter plate 26 with an axis 31 in the front-rear direction. It is worn.

In Figure 3, A shows the filter plate group after plate opening is completed.
B shows a group of filter plates that are being opened, and C shows a group of unopened filter plates.

The above-mentioned claw box 1 has the following structure:
It is mounted on the rail 3 so that it can pass in the left and right direction.

The inner end surfaces of the left and right fixing members 24 are such that when the claw box 1 reaches the end of its movement locus in the closing direction (left side in FIG. 3), the lower ends abut against the pusher claws 4 and the pusher claws 4 By laying down the tip part 4 of the pushing claw 4
A claw concealing member 32 is fixedly attached to the claw concealing member 32, which allows the push claw 4 to be inserted under the tip 5a of the claw 5 to restrain the pushing claw 4 in the laid down position.

A space 33 is formed below the right fixing member 25 into which the claw box 1 can enter when it reaches the end of its locus of movement in the opening direction.

Next, the function and operating procedure of this embodiment will be explained in the fourth section.
The operation diagrams following the figure will be explained.

First, the normal opening operation of each set of filter plates 26 will be explained based on FIGS. 4a to 4h.

For example, the plate opening progresses to the state shown in FIG. 3, and from this state, in order to further open the next set of filter plates 26, the chain 2a is first pulled and the claw box 1 is moved in the closing direction. .

At this time, as shown in FIG.
pass under the rotary arm 30 of the filter plate 26 which is being opened, and when it reaches the fixed arm 28 of the unopened filter plate 26, as shown in FIG. The pusher claw 4 is slightly lowered by the lower end of the pusher claw 4, and after pushing the tip 5a of the claw 5 slightly to the right, the pusher claw 5 sneaks under it. At the same time, the tip 5a of the claw 5 comes into contact with the right surface of the fixed arm 28.

At this time, the claw box 1 tries to move further in the closing direction, so the shaft 17 slides within the elongated hole 16, and the claw 5 moves against the biasing force of the compression spring 19. As shown in FIG. 4c, the claw box 1 moves to the right, and the tip 4a of the pusher claw 4 touches the fixed arm 28.
After passing under , the push pawl 4 returns to the upright position and rotates.

When the shaft 17 comes into contact with the right end of the elongated hole 16, the claw box 1 stops.

Thereafter, when the claw box 1 is moved in the opening direction, the fixed arm 28 is sandwiched between the pusher claw 4 in the upright state and the corresponding claw 5 from the left and right, as shown in FIG. 4d. The plate is pushed in the direction of opening the plate, and the plate is opened.

At this time, the claw 5 has not completely returned to the position shown in FIG. 4a, but has stopped in the middle, so the claw 5 has a size corresponding to the dimension x shown in FIG. 4d. There is still a possibility of return.

In this way, while traveling on the rail 3, the filter plate 26
When the rotating arm 30 of the filter plate 26 that has already been opened is moved in the opening direction, the rotary arm 30 of the filter plate 26 that has already been opened is sequentially moved in the opening direction together with the fixed arm 28 that is being opened.

As shown in FIGS. 4e, f, and g, when the opened fixed arm 28 reaches the position where it cannot be moved any further by the pusher claw 4, the fixed arm 28, which had been resting on the pusher claw 5 in an inclined state, The movable arm 30 contacts the abutment body 29 on the filter plate 26 on the right side and is rotated downward, and the lower end of the rotary arm 30 pushes the claw 5 down to the collapsed position, and the fixed arm It comes off downward from the lower end of 28.

At the same time, the claw 5 returns to the left by an amount corresponding to the above-mentioned dimension x due to the biasing force of the compression spring 19, and its tip 5a sneaks under the fixed arm 28. (Figure 4g).

FIG. 4h shows the state where the claw box 1 starts moving in the closing direction to open the next filter plate 26. The claw 5 holds the fixed arm 28 of the opened filter plate 26.
4A, and then travels together with the pressing claw 4, remaining in the upright position, to the fixed arm 28 of the next filter plate 26, returning to the state shown in FIG. 4A.

In this way, all the filter plates are opened by repeating the above-described opening operation one after another.

Next, after the opening of all the filter plates 26 is completed, the push claw 4 of the claw box 1 that has reached the end in the closing direction is pushed down to the collapsed position, and the opening preparation operation is performed to turn the claw box 1 again to the opening start position. , will be explained based on FIGS. 5a to 5f.

As shown in FIG. 5a, when the claw box 1 reaches the end of its movement trajectory in the closing direction after all the filter plates 26 have been opened, the push claw 4 comes into contact with the lower end of the claw hiding member 32, The pushing claw 4 is rotated clockwise around the shaft 7, and after momentarily pushing the tip 5a of the claw 5 to the right with the tip 4a, the claw hiding member 3
2 (Figure 5b).

After that, when the claw box 1 further moves in the closing direction, the tip 5a of the claw 5 comes into contact with the claw hiding member 32, and after the claw 5 moves rightward relative to the claw box 1, The claw box 1 stops (Fig. 5c).

Thereafter, when the claw box 1 is moved in the direction of opening the plate, the claw 5 is placed in the claw box 1 as far as the pushing claw 4 while the tip 5a of the claw 5 remains in contact with the claw hiding member 32. After moving relatively to the approaching position,
It is separated from the nail hiding member 32 together with the nail box 1.

On the other hand, the pushing claw 4 passes under the claw hiding member 32 to the right while remaining in the fallen state, and at the same time, the tip 4a sneaks under the tip 5a of the claw 5, and the claw box 1 Even after it is completely separated from the hidden member 32, the pusher claw 4 is maintained in a lowered position by the tip portion 5a of the claw 5 (FIG. 5d).

In this state, the claw box 1 is moved in the opening direction, and each time the claw box 1 passes under the fixed arm 28, rotating arm 30, etc. of the filter plate 26 that has already been opened,
The claw 5 is pushed down a little, and along with this, the tip 4a of the pushing claw 4 is also pushed down.
The claw box 1 reaches the end of its movement trajectory in the opening direction (FIGS. 5e and 5f).

At the end in the opening direction (FIG. 5 f), the claw box 1 is
It enters the space 33 below the fixing member 25 and waits in preparation for the start of the next plate opening.

This completes the opening preparation operation.

In the above-mentioned standby state, the pushing claw 4 sneaks below the tip 5a of the claw 5 and remains lying down, but this does not impede the next opening operation.

That is, when opening the board for the first time next time, the claw box 1 moves in the direction of closing the board while remaining in the above-mentioned standby state, and the claw 5
When the distal end 5a abuts against the fixed arm 28, the state is the same as that shown in FIG. The claw 5 moves rightward relative to the claw box 1, and the tip 4a of the pushing claw 4 passes below the tip 5a of the claw 5 and the fixed arm 28 to return to the upright position. .

Thereafter, the opening operation can be repeated as described above.

As is clear from the above, in this embodiment, without providing a movable lid or a claw raising member, etc. in the conventional device, it is possible to perform not only the original opening operation but also the preparatory operation for the next opening after the opening operation is completed. This can be done reliably, and the same effects as described above can be achieved as the effects of the present invention.

In addition, in this embodiment, during the opening operation,
Since the fixed arm 28 can be moved while being pinched between the pusher claw 4 and the pusher claw 5, the filter plate 26 can be reliably and securely moved without accidentally moving between the pusher claw 4 and the pusher claw 5 during plate opening. There is an advantage that the filter plate 26 can be moved smoothly and that when the claw 5 comes into contact with the fixed arm 28, a buffering effect can be exerted.

Furthermore, in the conventional plate opening device as described above, when the claw box returns to the closing direction after one opening, the claw does not sneak under the fixed arm.
There is a possibility of malfunction such as the filter plate coming into contact with the side of the fixed arm and forcing it back again after opening.
In this embodiment, as shown in FIG. Since the tip 5a of the claw 5 reliably goes under the fixed arm 28 by a corresponding amount, there is also the advantage that there is no risk of such malfunction.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional front view taken along the line - in FIG. 1, and FIG. 3 is a schematic front view of the entire filter press. 4A to 4H are schematic front views showing the opening operation in the same embodiment, and FIGS. 5A to 5F are schematic front views showing the opening preparation operation in the same embodiment. 1... Claw box, 2a, 2b... Chain, 3... Rail, 4... Push claw, 5... This claw, 7... Shaft, 1
1, 19... Compression spring, 16... Long hole, 17...
Shaft, 24, 25...fixing member, 26...filter plate, 2
8...Fixed arm, 32...Claw hiding member.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A claw box equipped with facing claws and pusher claws that rotate in an inverted and upright position is connected to a chain, runs on a rail, and is located between the claws. In a filter plate opening device for a filter press in which the filter plate is opened by hooking the filter plate with a pusher claw, the tip of the claw can be superimposed above the tip of the pusher claw to cause the pusher claw to fall down. The pawl box is provided so as to be movable in the direction away from the push pawl depending on the position, and a means is provided for constantly biasing the pawl in a direction toward the press pawl, and the pawl comes into contact with the press pawl to cause the press pawl to move. When the claw is laid down, the tip of the pushing claw sneaks under the tip of the claw, and the claw concealing member that restrains the pushing claw in the fallen state is moved to an appropriate position at the end of the movement trajectory of the claw box in the opening direction. A device for opening a filter plate in a filter press, characterized in that it is provided in a fixed part. (2) The distance between the tip of the pusher claw in the upright position and the tip of the pusher claw in the upright position closest to the pusher claw should be smaller than the thickness of the arm of the filter plate to be opened. At the same time, the lower edge of the tip of the claw in the upright position closest to the pusher claw enters the rotation locus of the tip of the pusher claw, and the tip of the pusher claw is placed below the lower edge of the tip of the pusher claw. By infiltrating
The tip of the pushing claw engages with the lower edge of the tip of the claw,
The device according to claim (1) of the utility model registration, in which the pushing claw is restrained in the collapsed position.