JPS5922614A - Filter press - Google Patents

Abstract

PURPOSE:To reduce by half the cycle time of opening and closing filter plates and to enhance filtering efficiency by enabling the increase of the number of filter plates, by advancing and retreating a pair of locking heads at the same time. CONSTITUTION:Locking heads 1, 2 at both ends, used for opening and closing respective filter plates 5 like an accordion, are supported on guide rails 13 freely movably in the directions of advance and retreat, and string-shaped driving media 10, stretched around spaced wheels 21, 22 which are rotatably supported on machine frames 11, 12, are connected 25, 26 to the heads 1, 2. For closing respective filter plates; the wheel 22 is controlled to the retreating position, and when a hydraulic cylinder 30 is extended while keeping the media 10 in a tensioned state, the head 2 is advanced and simultaneously the head 1 is advanced through the media 10 to clamp respective filter plates 5 in sequence from both sides. Next, the cylinder 30 is further extended to tightly clamp the respective plates 5 after blocking the retreat of the head 1 by a stopper 32 and slacking the media 10.

Description

Detailed Description of the Invention: On a pair of parallel guide rails supported by a machine frame, a large number of parallel rows of filter plates are disposed sandwiched between a pair of heads. In between, each corrugated plate is connected by a loose connecting means so that each filter plate can be opened and closed at the same time, and the filtration operation is performed with each filter plate closed. In the open state,
The cake was discharged by running the filter cloth.
A filter press is known, for example, from Japanese Patent Publication No. 51-48909.

In such a filter press, when the filter plates, which are opened and closed all at once like an accordion, are closed, the stock solution to be filtered is fed under high pressure for filtration. In the case of a filter press equipped with a diaphragm on the surface for squeezing cake, the diaphragm is further pressurized, so the space between each corrugated plate disposed between the pair of tightening heads is closed. Under such conditions, it must be kept tightly tightened so that it can withstand the high pressures mentioned above.

Further, in such a filter press, in order to increase its filtration area, it is required to increase the number of filter plates.

In the past, such filter presses had the following problems.

If you increase the number of filter plates to increase the filtration area,
The stroke of the hydraulic cylinder for opening, closing, and tightening between the filter plates arranged in parallel on a pair of guide rails becomes long and takes up too much space, and the piston rod with this elongated stroke may buckle. For a tree that does not give birth, its diameter and weight must also be increased.
It becomes extremely costly.

The solution to this problem is the implementation lT'8
Like the filter press shown in Japanese Patent No. 56-88619, a pair of tightening heads are movable together, a hydraulic cylinder is disposed between one tightening head and the machine frame, and the other A removable locking device is disposed between the tightening head and the machine frame or the guide rod to lock the tightening head in a predetermined position on the guide rod in a non-returnable manner. However, in this filter press, the means for opening and closing between each filter plate in an accordion-like manner includes one tightening head for opening and closing between each corrugated plate over the entire opening and closing section, and It is arranged in the head and consists of a drive means, and a means for tightening the gaps between each filter plate under high pressure in the closed state.
Since it is composed of a hydraulic cylinder installed on the other tightening head, the stroke of the hydraulic cylinder can be extremely reduced, but this type of filter press
The time required to open and close between all the filter plates is determined by the above-mentioned Japanese Patent Publication No. 51-2003, in which one tightening head is fixed to the support frame of the guide rod, and only the other tightening head is movable. Similar to the filter press of the type shown in Publication No. 48909, the filter press is long because it opens and closes the rows of filter plates sequentially only from the negative side by moving one movable tightening head forward and backward. In all of these filter presses, the more the number of filter plates is increased in order to increase the filtration area, the more time required to open and close between each filter plate, that is, the so-called coarse cycle that does not involve the filtration operation. There is a problem in that the time increases and the filtration efficiency decreases.

In order to solve the above-mentioned problems, this invention aims to halve the rough cycle time required for opening and closing between each filter plate, and improves filtration efficiency by increasing the number of corrugated plates. It is an object of the present invention to provide a filter press in which the number of filter plates can be increased without increasing the length of the means by high-pressure tightening between each filter plate in a state in which the filter plates are closed. The filter press is positioned between a pair of tightening heads (1) and (2) on a pair of parallel guide rails supported by a machine frame. In the filter press, in which a large number of filter plates are respectively supported so as to be movable along the longitudinal direction of the rail, 1. The pair of tightening heads (1) and (2) are positioned between them. 11. The pair of tightening heads (1) and (2) are configured to sequentially close the open state between each filter plate from both ends. 111 A simultaneous drive device is provided for moving the filter plates forward and backward almost simultaneously in both the forward direction and the backward direction in which the closed state between each filter plate is opened sequentially from both ends.111 One tightening head (1) ,
A removable locking device is provided for locking it in a predetermined forward position in a non-retractable manner; 1v the other tightening head (2) and the pair of guide rails are connected; This filter press is characterized in that a tightening device is disposed between the filter plate and the machine frame for further tightening the gaps between the corrugated plates when the gaps between the filter plates are closed.

To explain one embodiment with reference to FIGS. 1 to 6, a pair of parallel guide rails Q,
1 (13) is supported horizontally, and between this pair of guide rails (6) (to) a pair of tightening heads (13) are supported horizontally.
) (2) and a row of a number of corrugated plates (5×5) positioned between the pair of tightening heads (1) and (2), each tightening head (1 The bar 2) is supported on the kite rail aΦα through wheels (g)--α19Qf9-1, respectively, and is movable along the longitudinal direction of the guide rail (to). Board (5) (5)
--1 is supported on the guide rail (1→(2)) via arms α protruding from both sides of the filter plate (5), and extends in the longitudinal direction of the guide rail (to). between a pair of tightening heads (1) (2) and a number of corrugated plates (5) (5) located between them.
゛The loose connecting means similar to those in known filter presses, for example, the respective filter plates (5) (5), are connected with loose connecting holes (elongated holes) that interlock in the front-rear direction at the upper and lower positions on both sides. ) with link (to) (g)---(II
A pair of tightening heads (1
) (2) A number of filter plates (5) (5) located between
In the first row, each corrugated plate (5) (5) -- from the open state shown in FIG. , the distance α between each filter plate (5×5) increases as the filter plates (5×5) move toward each other.
are closed sequentially from both ends, and each filter plate (5) (5)
--The closed state shown in FIG.
) and (2) are moved backward in the direction of moving away from each other,
Each corrugated plate (5) (5) ---The first section is completely open.
It is now in the state shown in the figure.

In this manner, in the filter press of the present invention, the pair of tightening heads (1) (2) located at both ends of the filter plate row are simultaneously tightened between each filter plate (5) (5). When moved forward and backward, a large number of filter plates (5) (5) can be simultaneously opened and closed sequentially starting from the ones at both ends, and the above pair of tightening heads (1) (2) In order to advance and retreat almost simultaneously in both forward and backward directions, the following simultaneous advance and retreat drive device is provided.

That is, the simultaneous forward and backward drive device of this embodiment has a pair of tightening heads (1) (2) and filter plates (5) (5) between them.
--, arranged on both sides of the row, and machine frame 0
]) (6) The suspension is rotated between a pair of wheels υ (a) mounted on the top (each supported on a shaft at the appropriate place on the guide rail (which may be on the top of the 1st axis)), A string-like driving medium (1 [phase]) stretched in a substantially endless manner and this string-like driving medium 00
A connecting device that connects the proper position of the portion of the guide rail (11) running along the longitudinal direction to the respective tightening heads (1) and (2), and the correct position of this string-like driving medium The string-like driving medium 01 of this embodiment has one end connected to one clamping head (1), and the other end connected to the other tightening head (c). The tightening head (1) is connected (c) to the tightening head (2) of the
) is connected to a string-like driving medium (10a) which is rotated around a rear wheel Qυ of
c), and the other end is connected to the other tightening head (2) (
7) with the string-like driving medium (10b) which is rotated around the rear wheel of the tightening head (2) to form a substantially endless string-like driving medium 0Q. ing.

The symbol @) is a guide roll for the string-like driving medium α.

Note that the above-mentioned string-like driving medium (10) can be composed of a chain or a wire rope, but this string-like driving medium OI is connected to a pair of tightening heads (10).
) (2) are moved forward and backward M 1t)b almost simultaneously to open and close the filter plates (5) and (5). Only the contacting parts are made of flexible members such as chains or wire ropes, and the remaining parts that do not come into contact with these wheels Qυ (a) or guide rolls (i.e., the linear running parts) are This may be constructed from a rigid rod-shaped body.

A pair of string-like driving media (10a) (io
The pair of tightening heads (1) and (2) fixedly connected (c) and (e) to each end of the b) are interlocked and connected by this string-like driving medium α1, The forward and reverse driving device for the string-like driving medium 00 for simultaneously advancing and retracting the heads (1) and (2) is a machine frame connected between a pair of guide rails αIQ3 at the rear of the hooked head (2). (6) and the tightening head (2), each filter plate (5)
) (5) - When everyone makes this hydraulic cylinder extend and retract, the tightening head (2) moves forward and backward, and the tightening head (1) connected by the string-like driving medium α0 is interlocked. At the same time, each filter plate (5) (5) is moved forward and backward.
) --The filter plates are arranged to close or open at the same time in the order mentioned above, that is, starting from the filter plates at both ends.

In addition, each of the above-mentioned filter plates (
5) (5) -- In one space, a filter cloth device similar to that in a known fully open/close type filter press is installed, for example, for each filter plate (5) (5) in an open state. A filter cloth device (not shown) that can be moved to discharge the cake, wash the filter cloth, etc. is provided.

In the filter press of the present invention, one of the clamping heads (1) is brought to the forward position with each filter plate (5) (5) closed by the simultaneous forward and backward drive device as described above.
in the forward position, for locking it irrevocably;
A locking device that can be freely engaged and detached is provided as follows. That is, locking protrusions el IC are provided at appropriate positions on the pair of guide rails O (to), respectively, inwardly projecting at two positions above and below, and locking protrusions cl])0]) on both sides are provided. A pair of stoppers (2) that are engaged and disengaged from 690◇ are 1. A support metal fitting OI is attached to the back side (1a) of the tightening head (1).
A pair of parallel bars (to) arranged and supported horizontally and parallel to the back surface (1a) via (to) and (to) (to)
(b) has a hole (to) (to) (to) that can be penetrated, and this pair of stoppers) (to) has a hole (to) (to) (to) (to)) via the pair of parallel bars e40
4, and is configured to be able to freely move forward and backward in the direction of moving it closer to or away from the guide rail (to) α, respectively. A hydraulic cylinder (to) supported on the rear surface (1a) of (1) is connected to each end of the hydraulic cylinder (g) via a bracket (b), When (g) is reduced, the distance between the pair of stopper (to) wheels is reduced, and it is maintained at the position shown by the solid line in Figure 8, and when the hydraulic cylinder () is extended,
The pair of stoppers @0 are each moved forward in both directions in FIG. Retraction can be prevented in the forward position where the space between each filter plate (5) and (5) is closed.In other words, the pair of stoppers 6 and 0 closes the space between them. The tightening head (1) is moved forward while keeping it in the retracted position shown in FIG.
5) --When one is closed, is the distance between them β? When the rear surface (a2b) is brought to the enlarged forward position (dash line in FIG. 8) as shown in FIG. (S2a) to the respective back surfaces (Aa) (88a) 7-- of the locking protrusions (G) (C) (To) →... that are protrudingly provided on both sides of the tightening head (1), respectively. When combined, the tightening head (1) can be locked in an advanced position in which the filter plates (5) and (5) are closed, so that they cannot be retracted. Of course, this locked state is released when the pair of stoppers 020 is moved back and the distance between them is reduced to βl (solid line in FIG. 8).

In addition, in Fig. 8, the symbol OC (to) is a blocking plate that prevents the pair of stoppers 0 and 0 boiling from moving to a certain retracted position, θQ is a receiving plate that supports the weight of the stopper (A), and 0υ is the raw solution passage. In Figures 1 and 2, (6) is a flexible stock solution supply pipe.

Further, in the filter press of the present invention, each filter plate (f
i) (fi) -- After the first space is closed and the ten thousand tightening heads (1) brought to the forward position are irrevocably locked by the stoppers 040 as described above. , acting on the other clamping head (2) brought into the advanced position, causing it to move further forward, so that each (filter plate (
5) (5) -- A tightening device is installed to further tighten the chamber in the closed state, but in the filter press of this example, this tightening The device is constituted by the hydraulic cylinder (to), which is arranged between the tightening head (2) and the machine frame (6).

In other words, this hydraulic cylinder (1) has the above-mentioned tightening device a,
It also serves as a forward/reverse drive device for the string-like driving medium, and for that purpose, a pair of tightening heads (1) (2)
When the simultaneous forward and backward drive device is once brought into the closed state and the ten thousand tightening heads (1) are locked in a manner that cannot be reversed, the tightening heads (1) are In order to enable the other tightening head (2), which is interlocked and connected via the string-like driving medium OI, to move forward by the extension operation of the hydraulic cylinder (to), the simultaneous forward and backward drive of this embodiment is performed. The device is equipped with a device for relaxing the string-like driving medium as follows. The details are in the 5th section.
- To explain with reference to Fig. 6, the string-like driving medium loosening device of the embodiment connects the shaft (c) of the tightening head (2) to the wheel located at the rear of the tightening head (2). The shaft is supported so that it can be freely moved in the forward and backward directions, and this shaft can be moved to a desired position
It is constructed with a shaft position displacement control device that moves the shaft forward and backward between positions.

In other words, the pair of wheels (A)) are attached to the tightening head (
Side of 2) (2b) (2b)! It is rotatably supported by the shaft end of a support shaft (goods) which passes through a sliding metal fitting (c) which is movable back and forth along the front and rear dovetail grooves θ41 (goods) formed in this way, If this shaft is moved forward and backward in the same direction as the tightening head (2) by the hydraulic cylinder 0Q connected to it, the pair of wheel brackets (A) can be moved to any forward or backward position. It is now possible to control the Therefore, when the pair of wheels (A) are controlled to the backward position (Fig. 1),
While keeping the string-like driving medium aO in tension, the pair of tightening heads (1) and (2) are driven forward and backward almost simultaneously to open and close the filter plates (5) and (5) at the same time. In this way, after closing each filter plate (5) (5) and applying the stopper (a) to the tightening head (1), the pair of wheels @ If (a) is controlled to the forward position (FIG. 2), the string-like driving medium 01
Particularly, the part of the string-like driving medium (10b) that is rotated around the wheel 4 is relaxed, and the string-like driving medium (10b) thus loosened moves forward of the tightening head (2). The hydraulic cylinder () can be further extended within a range that allows for (5) (5) --It is possible to further tighten (retighten) between the head (1) and the tightening head (1) whose retreat is prevented by the stopper (B).

Next, to explain the function, in the filter press of the present invention, as mentioned above, each filter plate (5) (5)
--The tightening heads (1) and (2) at both ends for opening and closing the space in an accordion shape are connected to the guide rail α 0; ◆
The pair of tightening heads (1) and (2) are connected by a simultaneous forward and backward drive device, and each corrugated plate (5) (5
) -- Since the space is designed to be able to move forward and backward almost simultaneously in both the forward direction, in which the open state is sequentially closed from both ends, and the backward direction, in which the closed state is sequentially opened from both ends, the above-mentioned simultaneous advance and retreat is possible. When the drive device is driven, that is, in the case of the above embodiment, the wheel (a) is controlled to the backward position to keep the string-like drive medium 0Q in a tensioned state, and each of the steps shown in FIG. Corrugated plate (5) (5) −
- When the hydraulic cylinder (1) is extended in the state where the first gap is opened, the pair of tightening heads (2) are moved forward at the same time, and each filter plate (5) (5). , are closed sequentially from both ends, and the filter plate group on the left half and the filter plate group on the right half in Fig. 1 gather from the left and right to the center almost simultaneously, and each filter plate (5) (5) -- One room can be closed (Figure 2).

When the hydraulic cylinder (to) is contracted from this closed state, the pair of tightening heads (1) and (2) are simultaneously retracted, and each corrugated plate (5) and (5) -- one space is The corrugated plates (5) are sequentially opened from both ends, and the corrugated plate group on the left half and the filter plate group on the right half in Fig. 2 are unfolded in the left-right direction almost simultaneously. 5) -- One room is opened (first
figure).

Therefore, in the filter press of the present invention configured as described above, the time required to open and close the plates (5), (5), etc. Compared to a filter press of the type that opens and closes between each filter plate by moving only the Rad to the other tightening position, approximately A of that amount is sufficient.

In addition, the device of Jin's invention has one tightening head (1) attached to each of the above-mentioned twisted corrugated plates (5) (5) in a closed state between = -1 and the tightening head (1) cannot be retracted. Since a removable locking device is provided, this locking device acts on the tightening head (1), that is, in the embodiment described in No. 62 above, the stopper snoring is prevented. Tightening head (1)
is applied to keep it in a predetermined forward position with respect to the guide rail σ field so that it cannot move back, and then the other tightening head (2) is If a tightening device is used for further tightening, that is, in the case of the above embodiment, first the loosening device for the string-like driving medium is used as a second device that makes such tightening possible. If the hydraulic cylinder (1) is controlled to allow the additional advance of the tightening head (2) as described above and to further extend the hydraulic cylinder (1), it will close between the pair of tightening heads (1) and (2). Tighten the spaces between each filter plate (5) (5) -=- strongly, and perform the filtration operation by pressurizing the stock solution into the space between each filter plate. The cake inside the corrugated plate can be further compressed under high pressure using a diaphragm, etc. In this embodiment, the distance between each filter plate is approximately equal to the sum of the opening and closing strokes between each filter plate. A hydraulic cylinder with only a noisy stroke can open and close the corrugated plates, and then further tighten them using high pressure.

Next, another embodiment of the filter press according to the present invention will be described. Since the string-like driving medium OI fixedly connected (A) and (G) to the tightening heads (1) and (2) of In order to enable only the other tightening head (2) to move further forward with respect to the head (1), an example is shown in which the string-like driving medium 01 is provided with a loosening device therefor. , in another embodiment, each tightening head (1) or (2) of the part (iob) of the string-like driving medium suspended around the wheel (a) behind the tightening head (2). ), at least one of the tightening heads (1
) or (2) may be connected to the tightening head (1) or (2) via a removable connection device, an example of which is shown in No. 7. To explain FIGS. 9 to 9, this embodiment relates to the case where the connecting portion () is detachably connected to the connecting portion, and in this example, a part of the string-like driving medium is constituted by a rod-like body, Tightening head (
A guide metal fitting (b) having two grooves with a lip (52a) is fixed to the outer surface of the side wall (2b) of 2),
The part of the rod-shaped body ■ is positioned relative to the tightening head (2) along the forward and backward direction (left and right direction in the drawing) of the tightening head (2) according to the groove 6 of the guide hardware ←υ. It is slidably supported on. In addition, holes are formed at appropriate locations on the guide hardware (!51) and the side wall (2b) of the tightening head (2), and the holes penetrate through them. , into the stopper bin) is slidably inserted,
The tip of the stopper bottle) is inserted into the guide hardware 6 from the hole.
It is configured to be able to appear and disappear freely within the groove 6 of 1. Further, the rod-shaped body is formed with an engagement hole (into which the stopper pin ring can be thrust and engaged) at a position on the left side in FIGS. 7 to 9, and the stopper pin function is When plunged into the hole, the driving medium assembly 00 and the tightening head (2) are connected in motion in the direction of movement of the tightening head (2), and the stopper pin branch is inserted into the engagement hole (4). When pulled out, the tightening head (2) is separated from the string-like driving medium αQ and can be freely moved forward and backward.

Note that the control device for engaging and disengaging the stopper pin ring from the engagement hole may be such that the base of the stopper pin ring is connected to a two-position stable solenoid (not shown), or the stopper pin ring is connected to a two-position stable solenoid (not shown). Since the two stopper pins (in the bottle) are provided in a pair on both side walls (2b If the connection is made using a hydraulic cylinder, the tightening head ( 2) and the rod-like body portion of the string-like driving medium ◇1 can be freely connected or disconnected at a predetermined relative position.

In FIGS. 7 to 9, reference numeral 67) f4 is a connecting portion between the string-like driving medium (10a) (10b) and the rod-like body (2). If the configuration is such that the connecting device can connect and separate the string-like driving medium α0 and the tightening head (2), then this connecting device can connect the tightening head (2) and the string-like driving medium 01. In the connected state, the pair of tightening heads (1) (2)
) are moved forward and backward almost simultaneously in both forward and backward directions, and each filter plate (5) (5) -- partially bent and closed from both ends, and each corrugated plate (5) (5) -- partially closed. In this case, if the connection state between the tightening head (2) and the string-like driving medium 01 by the above-mentioned coupling device is to be disconnected, the above-mentioned hydraulic cylinder) is further extended to move only the tightening head (2) further forward, Therefore, it will be easily understood that the corrugated plates (5) (5) in the closed state are strongly tightened.

In the above embodiment, the pair of tightening heads (1) (2 ), but in other embodiments, this interlocking connection means can be modified as follows. That is, to explain the outline with reference to Figs. 10 and 11, the self-wheel Qυ (a) is the sprocket wheel in front, and the guide rail 0 is placed approximately midway between the two.
4, a pair of sprocket wheels e1) 62 are pivotally supported, and the two sprocket wheels 11) are interlocked and connected via interlocking gears that mesh with each other, and the sprocket wheels e1) (13) Each chain r--n (tlOa
The tightening heads (1) and (2) may be connected to each other.

Each of the above embodiments includes a pair of tightening heads (two
) is configured with a string-like driving medium to which both of the pair of tightening heads (1) and (2) are connected, but in other embodiments, this simultaneous drive device As shown schematically in Fig. 12, the suspension is rotated between each pair of sprocket wheels, which are pivotally supported on each of the outer surfaces of the guide rails 03α, and runs in a straight line. An endless chain QxOa) whose portions are arranged on both sides of the tightening head (1), and a forward/reverse drive device for this endless chain (110a) connected to the shaft of one sprocket wheel (B)). , the machine frame (
2) and a hydraulic cylinder (1) disposed between the tightening head (2); As shown schematically in the figure, a pair of guide rails Q3
A pair of racks e4- provided along Q3 are engaged with the racks, respectively, and the shaft rings are attached to the tightening head (
1) A pair of pinions supported by bearings provided above) (→ and this pinion #4 connected to the above-mentioned shaft) JMt t171 forward and reverse drive unit, the machine frame 0 pier and the tightening head. (2) Hydraulic cylinder (G) installed between
(not shown), and as in the above two embodiments, the driving device for the tightening head (1) and the driving device for the tightening head (2) are separated from each other. When connected to a drive source, by automatically and simultaneously controlling the start of each forward/reverse drive device f4@ and the hydraulic cylinder (g), both the publication heads (1) and (2) are moved forward and backward. It is possible to drive the motor forward and backward substantially simultaneously in both directions.

As can be easily understood from the above description, in each of the above-mentioned embodiments of the filter press of the present invention, a device for simultaneously advancing and retracting the pair of tightening heads (1) and (2) is configured, Driving medium QO (10aX10bX110a
) (110b) are wheels Qυ(a)oI, respectively.
The parts that run around the wheels must be flexible, such as wire ropes or chains, but the parts that run only in a straight line without touching the wheels are not allowed. Needless to say, it may be a flexible rod-shaped body.

In addition, in each of the above embodiments, the tightening device is used as a retightening device between each filter plate in a state where the space between each corrugated plate is closed by the simultaneous advance and retreat drive device of the pair of tightening heads (1) and (2). Although an example is shown in which the device is configured with a hydraulic cylinder (which is disposed between the tightening head (2) and the machine frame (6)), in other embodiments, each of the above-mentioned implementations may be used. In the example, the hydraulic cylinder α) is connected to the screw jack (
In the above embodiment, a locking device for locking the tightening head (1) in a predetermined forward position in a non-retractable manner is attached to a pair of guide rails 0101. An example has been shown in which the locking device is composed of protrusions 0]) protruding from each inner surface of the holder and a movable stopper 4 that can be freely engaged and detached from the protrusions. In other non-limiting examples,
Of course, this may be replaced with a locking device already known in Japanese Utility Model Publication No. 56-88619.

The present invention has been described above with reference to several embodiments, but as mentioned above, the filter press of the present invention has a pair of tightening heads (1) (2) and a large number of corrugated plates (5) located between them. (5) --The two guide rails are both movably supported along the longitudinal direction of the pair of guide rails, and are connected to each other via a loose connection means so as to be openable and closable. However, in the filter press of the present invention, the pair of tightening heads (1) and (2) have a forward direction that sequentially closes the open state between each filter plate from both ends;
At least, the same 88-
- A forward and backward drive device is provided, and when closing between each corrugated plate, it can be operated simultaneously from both ends in the direction approaching the middle position of the row of filter plates, and each filter plate can be closed simultaneously from both ends. When opening the space between the filter plates, the opening operation can be performed simultaneously from both ends in the direction away from the middle position of the row of filter plates, so the time required for this opening/closing operation is Compared to a conventional filter press that closes υ0 only from one end of the filter plate row, A is sufficient for a filter plate row of the same length, and a filter of approximately twice the length can be produced within the same required time. This will allow you to open and close the board rows. Therefore, in the filter press according to the present invention, the rough cycle time required for the filter plate to be idle can be reduced accordingly, and the filtration efficiency can be relatively improved.

Further, in the filter press of the present invention, the space between each corrugated plate is closed at a position where the pair of tightening heads (1) and (2) are advanced a predetermined amount in a direction toward each other,
The means for tightening each filter plate with high pressure in the closed state between each filter plate is a removable lock that can irreversibly lock the 84-rad (1) to one of the filters in the above-mentioned forward position. and a tightening device disposed between the other tightening head (2) and the machine frame. Compared to a conventional device in which each filter plate is opened and closed by moving only one of the tightening heads back and forth using a tightening device between the filter plates, the stroke of the tightening head (1) can be reduced by the amount of movement of the tightening head (1). In other words, compared to the conventional device described above, the stroke of the high-pressure tightening device can be shortened by about the infrequent opening/closing stroke between all filter plates. This allows the space between the filter plates to be tightened.

[Brief explanation of the drawing]

Fig. 1 shows an embodiment of the filter press according to the present invention, and Fig. 2 is a side view of the filter press with the filter plates open, and Fig. 2 is a partially cutaway side view of the filter press with the filter plates closed. Figure 8 is a rear view of the tightening head (the cross section is along the fit-1 line in Figure 2);
Figure 4 is the same side view (the cross section is along the W-ff line in Figure 8)
, FIG. 5 is a side view showing the loosening device for the string-like driving medium, and FIG. 6 is a front view of the same (the cross section is taken along the line Vl-Vl in FIG. 5).
, Fig. 7 is a side view of the detachable coupling device between the string-like driving medium and the tightening head, Fig. 8 is a partially cutaway plan view of the same showing the stopped state, and Fig. 9 shows the disengaged state. Same part cutaway plan view,
Fig. 10 is a side view of a filter press schematically showing another embodiment, Fig. 11 is a partially cutaway plan view of the same, and Figs. 12 and 13 are partially cutaways of a filter press showing still other embodiments. It is a schematic side view. (1) (2)...Tightening head, (5)...Filter plate, αOQoa)Qob)Qxoa)Qtob)...String-like driving medium, θυ0 heat...Machine frame, α椴・
・・Guide rail, 0 barrel θ0・・Link,
■η (goods)...wheel, (to)...tightening device,
01)...locking protrusion, O)...stopper. Patent applicant Ishigaki Kiko Co., Ltd. Agent (6870) Patent attorney Takemi Nishimura

Claims (1)

[Claims] 1. A pair of tightening heads (1) (2) on a pair of parallel guide rails supported by a machine frame, and a pair of tightening heads (1) (2) between the pair of tightening heads (1) (2). A filter press in which a large number of filter plates are respectively supported so as to be movable along the longitudinal direction of the rails, wherein: 1. the pair of tightening heads (1) and (2) and between them; 11. The pair of tightening heads (1) and (2) are connected to the open state between each filter plate at both ends. 111. A simultaneous drive device is disposed for moving the filter plates forward and backward almost simultaneously in both the forward direction in which the filter plates are sequentially closed from each other and the backward direction in which the closed state between each filter plate is sequentially opened from both ends. 1),
-1-++ 1v between the other tightening head (2) and the pair of guide rails. A filter press characterized in that a tightening device for further tightening the gaps between the filter plates in a closed state is disposed between the filter press and the machine frame to which the filter press is connected. 2. The simultaneous drive device arranged on the pair of tightening heads (1) (2) is arranged on both sides of the row consisting of the pair of tightening heads (1) (2) and the filter plate between them. and a string-like driving medium that is stretched substantially endlessly between a pair of wheels that are respectively pivotally supported at appropriate positions on the machine frame or guide rail, and this string-like driving medium is attached to the guide rail. Separate tightening heads (1) are used to tighten the sections running along the longitudinal direction at appropriate locations.
2. The filter press according to claim 1, comprising a connecting device connected to each of the first and second portions of the filter press, and a forward and reverse driving device for driving the string-like driving medium. 8. The string-like driving medium has one end connected to one tightening head (1) and the other end connected to the other tightening head (2).
A string-like driving medium aυ is connected to the wheel at the rear of the tightening head (1), and its one end 2- is connected to one tightening head (1), and the other end is connected to the other tightening head (1). is connected to the tightening head (2) of the tightening head (2), and has a substantially endless configuration with a string-like driving medium (2) that is rotated around a wheel behind the tightening head (2). , a filter press according to claim 2. 4. The filter press according to claim 2 or 8, wherein the string-like driving medium is a chain. 5. The filter press according to claim 2 or 8, wherein the string-like driving medium is a wire rope. 6. The filter press according to claim 2 or 8, wherein a part of the string-like driving medium is a chain and the remaining part is a rod-like body. 7. Part of the string-like driving medium is a wire rope, and the remaining part is a rod-like body.
The filter press described in section. 8. A connecting device between the string-like driving medium and each of the tightening heads (1) and (2) fixes a proper position of the string-like driving medium to a proper position of the tightening head (1) and the tightening head (2), respectively. The tightening head (2) is connected to the string-like driving medium, which is suspended by a wheel at the rear of the tightening head (2), in a state where the spaces between the filter plates are closed. 2) is provided with a loosening device for the string-like driving medium to allow the tightening between each filter plate to be advanced by the device. The filter press described in section. 9. The string-like driving medium loosening device is a tightening head (2)
A bearing device for the wheel that supports the shaft of the wheel in the rear position so as to be freely displaceable in the forward and backward direction of the tightening head (2), and this bearing device is moved forward and backward between two desired positions. The filter press according to claim 8, comprising a bearing displacement control device. 10. Each tightening head (1) (2) of the part of the string-like driving medium that is suspended around the wheel behind the tightening head (2).
), at least one of the connecting portions to the tightening head is connected to the tightening head via a detachable connecting device.
The filter press described in any one of Item 7. 11. The forward/reverse drive device for the assembled driving medium is connected to the machine frame to which the pair of kite rails are connected and the tightening head (
2) The filter press according to any one of claims 2 to 10, which is a hydraulic cylinder disposed between the filter press and the filter press. 12. The filter press according to claim 11, wherein the hydraulic cylinder is also a tightening device between the filter plates in a state in which the corrugated plates are closed. 18. The forward/reverse drive device for the string-like driving medium connects the machine frame to which the pair of guide rails are connected and the tightening head (
2) The filter press according to any one of claims 2 to 10, which is a screw jack disposed between the filter press and the filter press. 14. The filter press according to claim 18, wherein the screw jack is also a tightening device between the filter plates in a state in which the corrugated plates are closed. 16. The simultaneous forward and backward drive device disposed on the pair of tightening heads (1) and (2) is rotated between each pair of sprocket wheels that are pivotally supported at appropriate positions on the guide rail, so that the driving device can move in a straight line. A pair of endless chains whose parts are arranged on both sides of the tightening head (1), and this endless chain x -:/ (D
A forward/reverse drive device, this endless chain, and a tightening head (1
), and a hydraulic cylinder disposed between the machine frame and the tightening head (2) to which the pair of guide rails are connected. Filter press described in. 16. The simultaneous advance/retreat drive device disposed on the pair of tightening heads (1) and (2) engages with the rack provided along the pair of guide rails, and the axis thereof is connected to the tightening head ( 1) It is composed of a pinion bearing a bearing on the top, a forward/reverse drive device for the pinion, and a hydraulic cylinder installed between the machine frame and the tightening head, which connect a pair of guide rails. A filter press according to claim 1. 17. The filter press according to claim 15 or 16, wherein the hydraulic cylinder is also the tightening device between the corrugated plates in a state where the corrugated plates are closed. 18. The simultaneous forward and backward drive device disposed on the pair of tightening heads (1) and (2) is rotated between each pair of sprocket wheels that are pivotally supported at appropriate positions on the guide rail, so that the driving device can move in a straight line. A pair of endless chains whose parts are arranged on both sides of the tightening head (1), a forward/reverse drive device for the endless chain, a connecting device between the endless chain and the tightening head (1), and a pair of guides. The filter press according to claim 1, comprising a screw jack disposed between a machine frame and a clamping head (2) to which rails are connected. 19. NA arranged on a pair of tightening heads (1) (2)
The simultaneous forward and backward drive Wr device engages a rack provided along a pair of guide rails and a tightening head (
1) Consists of a pinion on which the shaft is supported, a forward/reverse drive device for this pinion, and a screw jack installed between the machine frame connecting the pair of guide rails and the tightening head. The filter press according to claim 1, wherein the filter press is 20. The filter press according to claim 18 or 19, wherein the hydraulic jack is also the tightening device between the filter plates in a state in which the filter plates are closed. 21. The locking device of the tightening head (1) is provided with a protrusion protruding from a suitable position on each side of the pair of guide rails, and a locking device of the tightening head (1) at a suitable position perpendicular to the side surface of the guide rail. The movable stopper according to any one of claims 1 to 20, comprising a pair of movable stoppers provided so as to be able to move forward and backward in the direction, and a device for driving the pair of movable stoppers forward and backward. filter press.