JPH06269612A - Removing device for cake in filter press - Google Patents

Abstract

PURPOSE:To enhance the filtration efficiency of a filter press by allowing even cohesive cake which gives vibration to a filter cloth to drop extremely rapidly and positively by direct stroking of the rears of opposite-positioned filter cloths using both main and auxiliary filter cloth stroking members when filter plates are opened one by one to remove cake after press filtration. CONSTITUTION:The cake removal device is equipped with paired front and rear arms 20, 20 having both main and auxiliary filter cloth stroking members 21, 21, 22, 22, an arm fluctuating means 30 and its lifting mechanism provided on the mobile means 6 of a filter press. If a filter plate is opened after press filtration, the main and auxiliary filter cloth stroking members 21, 21, 22, 22 are drawn out in an almost ? shape and positioned at both outer front and rear outer sides above the opposed filter cloths 10a, 10b. In a state that the arms 20, 20 with the filter cloth stroking member are lowered, both arms 20, 20 are opened and closed, and both filter cloths 10a, 10b are directly stroked from rear on the opposite side of a cake-sticking surface by the main and auxiliary filter cloth stroking members 21, 21, 22, 22.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cake removing device in a filter press.

[0002]

2. Description of the Related Art Conventionally, in a filter press, after the completion of filtration, filter plates are opened one by one for a required distance in order to remove the cake (filter residue) in the filter chamber between filter plates adjacent to each other. However, most of the cake in the filter chamber falls at the same time as the open plate due to its own weight, and the cake attached to the filter cloth is
It was removed by a filter cloth vibrating device.

That is, filter cloth suspension rods are attached to the upper edges of the filter cloths that cover the front and rear filtration surfaces of each filter plate of a conventional filter press. The left and right ends are connected by a connecting member such as a chain that is shorter than the opening plate distance.When opening the plate, the upper ends of the opposing filter cloths are both pulled out inward, and are inclined in a substantially C shape when viewed from the side. The left and right ends of the filter cloth suspension rod at the upper end of the filter cloth were hit by a vibration hammer of a vibration device, and the cake was shaken off and removed.

[0004]

However, according to this conventional apparatus, the vibrating hammer hits the left and right ends of the filter cloth suspension rod, so to speak, the filter cloth is indirectly vibrated to shake off the cake. Therefore, when the vibration of the filter cloth is relatively slow and the cake attached to the filter cloth is, for example, sticky, the cake cannot be dropped quickly and reliably, and the filter press However, there is a problem that the efficiency of the filtration work cannot be improved.

An object of the present invention is to solve the above-mentioned problems of the prior art, and after the filtration work is completed, when the filter plates are opened one by one to remove the cake, the back surfaces of the filter cloths facing each other are mainly removed. Also, the filter cloth can be directly beaten by the auxiliary filter cloth striking member to give vibration to the filter cloth, so that even cake having stickiness can be dropped extremely quickly and surely. An object of the present invention is to provide a cake removing device in a filter press, which can significantly improve the efficiency of

[0006]

In order to achieve the above-mentioned object, the present invention is provided with a large number of filter plates whose front and rear filtering surfaces are covered with a filter cloth, and which are respectively attached to the upper edges of the front and rear filter cloths. Filter cloth suspension rod, springs attached to the upper end of the filter plate and suspending the left and right ends of the filter cloth suspension rod, and both ends of the filter cloth suspension rods of the adjacent filter plates facing each other. In a filter press provided with a connecting member for connecting the movable body and a movable body that can move back and forth, the movable body is pulled out in a substantially C-shape when viewed from the side in an open plate state after completion of filtration, and is above the filter cloth that faces the movable body. A pair of front and rear arms having main filter cloth striking members located at the outer sides of the front and rear ends, and hanging arms attached to both arms and above and below the filter cloth below the main filter cloth striking members. Auxiliary filter cloth to be positioned Member, an arm oscillating means for oscillating both arms by the main and auxiliary filter cloth striking members so as to strike the back surface of the filter cloth on the opposite side to the cake adhering surface, and the arm with filter cloth striking member and the arm rocking means. The gist is a cake removing device in a filter press, which is provided with an elevating mechanism for reciprocating the means between an intermediate upper position of both filter plates in an open plate state and a lower position where both filter cloths should be hit.

[0007]

In the above filter press, since the length of the connecting member is shorter than the distance between the adjacent filter plates in the open plate state after the completion of filtration, the upper ends of the filter cloths facing each other are together. Both filter cloths are pulled inward, and both filter cloths are tilted into a substantially C shape when viewed from the side. The portal-shaped moving body is positioned at the center between the two opened filter plates, and the main filter cloth striking member at the front and rear ends of the pair of arms and the main filter cloth striking member attached to both arms in a suspended manner. The auxiliary filter cloth striking member located on the lower side is located on the upper and lower front and outer sides of the opposing filter cloth.

Then, the operation of the elevating mechanism lowers the arm swinging means and the arm with the main and auxiliary filter cloth striking members, and stops both filter cloths at the lower limit position where they should be hit.
At this time, the main and auxiliary filter cloth striking members are located on the outer sides of the front and rear sides of the upper part of the filter cloth that face each other.

Next, the arms are opened and closed by the operation of the arm swinging means, and the main and auxiliary filter cloth striking members attached thereto directly strike both filter cloths from the back surface opposite to the cake adhering surface. The cake adhered to the surface side (opposite surface side) of the filter cloth is caused to vibrate so as to drop very quickly and reliably. This operation is repeated several times to remove the cake attached to the filter cloth.

After removing the cake, the operation of the lifting mechanism
This time, the arm swinging means and the arm with the main and auxiliary filter cloth striking members ascend and return to the original upper limit position.

After that, the next filter plate is opened, and in the same manner, the shake-off removal work of the cake is automatically repeated for each plate of the filter plate.

As described above, the filter cloths, which are inclined in a substantially C-shape when viewed from the side and face each other, are hit by the main and auxiliary filter cloth hitting members from the back surface on the side opposite to the cake adhering surface to remove the cake. Since it is carried out extremely smoothly and sufficiently, the efficiency of the filtering operation of the filter press can be greatly improved.

[0013]

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

In this specification, the front and rear and the left and right are based on FIG. 1, the front means the right side of FIG. 1, the rear means the same left side, and the right means the front side and left side of the drawing sheet in the figure. The same shall apply to the back side.

First, in FIG. 7 showing the whole of the filter press, the filter press comprises a first head (3) and a rear head (4) each having a stand (1),
A pair of left and right side plates (2) and (2) held by these, a loose head (5) movably mounted on both side plates (2) and (2) through rollers, and both side plates (2) ( 2) A large number of filter plates slidably and suspendedly supported by a pair of hanger (8) (8)
(7) and the left and right legs (6a) (6a) are guides for both side plates (2) (2).
The rail (18) (18) is supported by rollers (19) (19) so that it can move back and forth, and it is provided on the gate-shaped moving body (6) and both side plates (2) (2). Equipped with a filter plate feed mechanism (51) (51),
The rear head (4) is provided with a cylinder (not shown) for moving the loose head (5) forward and backward.

1 to 4, the front and rear filtration surfaces of each filter plate (7) are formed by a pair of front and rear filter cloths (10) and (10) connected to each other at the central stock solution introducing hole (17). It is covered. The filter cloth suspension rod (9) is attached to the upper edge of each filter cloth (10), and the left and right ends of the filter cloth suspension rod (9) are erected on the left and right sides of the upper end of the filter plate (7). Inverted L-shaped spring suspension rod (13) (1
3) The coil spring (1a) suspended on the upper horizontal part (13a) (13a)
4) Suspended by (14). Adjacent filter plates
(7) (7) The left and right ends of the filter cloth hanging rods (9) and (9) facing each other are connected by a connecting member (15) made of a chain, and the connecting members (15) are adjacent to each other. The filter plates (7) (7) have a length shorter than the distance when they are separated from each other.
The connecting member (15) may of course be formed of a rope or the like other than the chain.

A horizontal mounting board on the upper end of the gate-shaped moving body (6)
(11) is stopped in the front-rear direction, and a lifting air cylinder (40) is attached to the piston
Mounted with the rod (41) facing downward, the cylinder (4
0) is vertically supported by the vertical support member (12). At the tip of the piston rod (41), arm swinging means
A pair of front and rear main filter cloth striking rods (21) and (21) with arms (20) and (20) are attached via (30).

Here, the front and rear arms (20), (20) have upper sloping side portions (20a) (20a) inclined downward and outward and lower sloping side portions (20b) (20b) inclined downward inward. ) And has a substantially rectangular shape and a substantially inverted shape when viewed from the side. The main filter cloth tapping rods (21) (21) are horizontally attached to the lower ends of both arms (20) (20), that is, the lower inclined side parts (20b) (20b) inclined downward inward. There is.

The auxiliary filter cloth striking members (22) and (22) are provided on the outer surfaces of the lower inclined side portions (20b) and (20b) of the front and rear arms (20) and (20) which are inclined inwardly downward. It is attached so as to be located below the cloth tapping rods (21) (21). Auxiliary filter cloth striking member (2
2) (22), in this embodiment, a flexible suspension member made of strip-shaped stainless steel plate attached to the lower inclined sides (20b) (20b) of the front and rear arms (20) (20) ( 24) and (24) and filter cloth striking weight members (23) and (23) attached to their lower ends. The filter cloth hitting weight members (23) and (23) are, for example, metal plates to which synthetic rubber is attached, but they may be made of other synthetic resin or metal.

The arm swinging means (30) comprises a connecting member (31) fixed to the tip of the piston rod (41) of the lifting air cylinder (40) and a pair of right and left connecting members (31). Hanging wall (3
2) Plate link (34) attached to (32) via pin (33)
(34) and the plate link (34) (34) is attached to the bifurcated lower end (34a) (34a) via the pin (35) and the bent portions (36a) (36a) are directed inward from the side surface. It is composed of a lever (36) (36) with a substantially inverted shape and a substantially inverted shape when viewed from the lower end of both levers (36) (36). The upper ends of the upper inclined sides (20a) (20a) are connected.

Guide cylinder members (42) and (42) are attached to the front and rear ends of the mounting board (11) at the upper end of the gate-shaped moving body (6), and these guide cylinder members (42) and (42) and the mounting board ( A pair of vertical sliding rods (43, 43) are inserted through both front and rear ends of 11). A horizontal elevating body (44) is attached to the lower ends of the sliding bars (43) (43).

A pair of rising walls (45) (45) are attached to the central portion of the lifting body (44), and these rising walls (45) (4)
5) When viewed from the above side, the lever (3
6) The bent portions (36a) (36a) of (36) are swingably attached by pins (46) (46). Further, lower horizontal overhanging wall parts (47) (47) are provided on both left and right sides of the central part of the lifting body (44), and a pair of left and right uprighting parts provided on both overhanging wall parts (47) (47). The mandrel (48) (48) is fitted with coil springs (49) (49) in a fitting manner, and the upper ends (48a) (48a) of both mandrels (48) (48) are male threads. On the other hand, on the left and right sides of the central portion of the connecting member (31) at the end of the piston rod (41), the upper horizontal overhanging wall (3
7) and (37) are provided, and the through holes (38) (3
8) are drilled, and the mandrel (48) (4) is inserted in these through holes (38) (38).
The upper male screw parts (48a) (48a) of 8) are inserted, and the upper male screw parts (48a) (48a) that have passed over both overhanging wall parts (37) (37) to the upper side.
A pair of upper and lower nuts (50) and (50) are respectively screwed onto the.

Also, the mounting base (11) at the upper end of the gate-shaped moving body (6)
Two pairs of left and right suspension bars (27) (27)
Are attached in a hanging shape, and lifting body stoppers (28) are respectively stopped at the lower ends of the left and right suspension bars (27) (27).

Referring to FIGS. 1 and 7, the filter plate feed mechanism (51) has a filter plate return claw (54) and a stop claw (55) which are erected by the force of a pair of pulling springs. It is composed of an endless chain (53) for feeding a filter plate, which is made endless with a filter plate traction block (52) in the middle, and the winding parts at both ends of the endless chain (53) have a pair of front and rear chain wheels (5).
6) It is wrapped around (57).

Although not shown, a filter cloth cleaning device and the like are provided on the top of the gate-shaped moving body (6).

In the above filter press, after the pressing and filtering work is completed, one filter plate (7) is opened backward to remove the cake (16) in each filter chamber.

As shown in FIGS. 1, 3 and 7, since the length of the connecting member (15) is shorter than the distance between the adjacent filter plates (7a) and (7b), the filter members facing each other. Both upper ends of the cloths (10a) (10b) are pulled out inward, and both filter cloths (10a) (10b)
Is tilted into a substantially C shape when viewed from the side. At this time, the portal-shaped moving body (6) is positioned at the center between the open filter plates (7a) and (7b). Main filter cloth striking rods (21) (21) and auxiliary filter cloths of the arms (20) (20) attached to the tip of the piston rod (41) of the air cylinder (40) for raising and lowering the moving body (6) The striking members (22) and (22) are pulled out in the above-mentioned substantially C shape and are positioned on the upper and lower outer sides of the filter cloths (10a) and (10b) facing each other (see FIG. 3).

Then, the lifting air cylinder (40) is actuated so that the piston rod (41) of the lifting air cylinder (40) is projected downward, whereby the arm swinging means (30), the lifting body (44), and the main filter cloth. The striking bar (21) (21) and the arm (20) (20) with the auxiliary filter cloth striking member (22) (22) descend, and the front and rear ends of the lifting body (44) become stoppers (28) (28). When hit, arm swinging means
(30) and arms (20) and (20) stop at the lower limit position where both filter cloths (10a) and (10b) should be tapped. At this time, the main filter cloth striking rods (21) (21) and the auxiliary filter cloth striking members (22) (22) on both the front and rear sides are pulled out in a substantially C-shape and face each other above the filter cloths (10a) (10b). It is located on both the front and rear sides (see Fig. 5).

Next, the piston / rod of the cylinder (40)
The arm swinging means (30) is operated by causing the (41) to project further downward. In other words, the protrusion of the piston rod (41) causes the connecting member (31) to move to the left and right coil springs (4
9) The plate links (34) and (34) swing downward so as to open their lower ends against the elastic force of (49), and accordingly, the plate links (34) and (34) are formed in a substantially inverted shape when viewed from the side. Also, the levers (36) (36) having a substantially rectangular shape swing around the pins (46) (46), and the arms (20) (20) at the ends of the levers (36) (36) are opened and closed. Both filter cloths (10a) (10b) are caked by the main filter cloth hitting rods (21) (21) at the tip of the
(16) The suspension member (24) (24), which is flexible and is vibrated by being directly hit from the back surface on the side opposite to the attachment surface, has a unique motion different from the opening / closing motion of the arms (20) (20). A weight member (23) for tapping the filter cloth at the tip end of these members swings in a vibration mode.
Both filter cloths (10a) and (10b) are directly struck by the back surface of the opposite side of the cake (16) adhering surface and vibrated by the (23).

In this case, by opening and closing the arms (20) (20), the main filter cloth striking rods (21) (21) at these tips are first struck on the back surface of both filter cloths (10a) (10b). Since the hanging members (24) (24) that are applied and are flexible are bent by the elasticity of the material, they swing slightly later than the opening and closing movements of the arms (20) (20), and their tip ends. The filter cloth striking weight members (23) (23) are struck against the back surfaces of both filter cloths (10a) (10b), and thus the main filter cloth striking rods (21) (21) and the auxiliary filter cloth striking member (22) With (22), the cake (16) adhering to the surface (opposing surface) side of the filter cloths (10a), (10b) facing each other in the front and back can be dropped extremely quickly and surely. The cake (16) attached to the filter cloths (10a) and (10b) is removed by repeating several times (see FIG. 6).

In this way, the removal work of the cake (16) is carried out by removing a pair of main filter cloth striking rods (21) on the back surfaces of the filter cloths (10a) and (10b) opposite to the cake (16) adhering surface. ) (21) and the auxiliary filter cloth striking member (22) (22), the cake (16) can be removed very smoothly and sufficiently by vibration, and the filtration of the filter press can be carried out. The work efficiency can be greatly improved.

After removing the cake (16), the piston rod (41) is retracted by the operation of the lifting air cylinder (40), and the arm swinging means (30) and the lifting body (44), And the main filter cloth striking bar (21) (21) and the auxiliary filter cloth striking member (22) (2
2) Arm with arm (20) (20) is raised and returns to the original upper limit position.

Thereafter, the filter plate feeding mechanism (51) is actuated to further pull back the next filter plate (7) and open it rearward. Similarly, for each open plate of the filter plate (7), the above cake ( 16)
The shake-off work of the filter is repeated automatically and the cakes (16) adhering to the filter cloths (10) and (10) on the front and rear sides of each filter plate (7) are sequentially removed. .

In the above embodiment, the moving body (6)
Has a gate shape when viewed from the front, and is adapted to move by being guided by rails (18) and (18) provided on the left and right side plates (2) and (2), but the moving body (6) Is not limited to the gate shape, and may have other shapes, for example, the moving body (6) is guided by a rail arranged above the filter plate (7) group of the filter press to move. Of course it is okay.

Further, in the embodiment, as the lifting mechanism,
Although the cylinder (21) is used, the present invention is not limited to this, and as the lifting mechanism, for example, lifting means using a screw rod and a female screw cylinder, or a slide cylinder may be used.

Also, the arms (20) (20) and the main filter cloth striking member (21)
The shape and structure of (21) are not limited to those shown in the figure, and may have other shapes and structures. Also,
In the above embodiment, the auxiliary filter cloth striking member (22) (22) is a flexible suspension member (24) (24) made of strip-shaped stainless steel plate,
Weight members for hitting filter cloth attached to the lower ends of these (23)
However, the present invention is not limited to this, and the auxiliary filter cloth striking members (22) and (22) may be composed of other chains or the like.

Further, the arm swinging means (30) for swinging both arms (20) (20) is not limited to the one shown in the figure, and may have another structure.

Further, in the above embodiment, the present invention is applied to a so-called side plate type filter press in which the filter plate (7) is suspended by the pair of left and right side plates (2) and (2) so as to be movable back and forth. However, the present invention is similarly applied to a so-called overhang type filter press (not shown) in which the filter plate (7) is suspended on the upper guide rail so as to be movable back and forth.

[0039]

As described above, according to the present invention, a large number of filter plates whose front and rear filtering surfaces are covered with a filter cloth, and filter cloth suspension rods attached to the upper edges of the front and rear filter cloths, respectively. , A spring attached to the upper end of the filter plate and suspending the left and right ends of the filter cloth suspension rod, and a connecting member for connecting the opposite end portions of the filter cloth suspension rods of the adjacent filter plates to each other, In a filter press provided with a movable movable body, the movable body should be pulled out in a substantially C-shape when viewed from the side in the open plate state after completion of filtration and should be positioned on the upper and lower outer sides of the opposing filter cloth. A pair of front and rear arms having a main filter cloth striking member at the tip, and auxiliary filter cloths that are attached to both arms in a suspended manner and should be positioned above and below and outside the filter cloth below the main filter cloth striking member. Striking member, primary and auxiliary An arm swinging means for swinging both arms so as to strike the back surface of the two filter cloths opposite to the cake adhering surface by the cloth hitting member, and an arm with filter cloth hitting member and an arm rocking means It is equipped with an elevating mechanism that reciprocates between the middle upper position of the plate and the lower position where both filter cloths should be hit. After the filtering work is completed, the filter plates are opened one by one to remove the cake. Lastly, the filter cloth that is tilted into a substantially C shape when viewed from the side and faces each other,
Since the main and auxiliary filter cloth striking members are directly beaten from the back surface on the side opposite to the cake adhering surface to vibrate, the cake adhering to the front surface side (opposing surface side) of the filter cloth may be sticky. Even if it is a thing, it can be dropped extremely quickly and surely, and there is an effect that the efficiency of the filtering operation of the filter press can be greatly improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a filter press having a cake removing device according to the present invention in an open plate state.

FIG. 2 is a cross-sectional view of the filter press.

FIG. 3 is an enlarged side view of an essential part of the filter press of FIG.
The state in which the main and auxiliary filter cloth striking members are pulled out in a substantially C-shape when viewed from the side and positioned on the upper and lower outer sides of the opposing filter cloth before hitting the filter cloth is shown.

FIG. 4 is an enlarged sectional view taken along the line AA of FIG.

FIG. 5 is an enlarged side view of an essential part of the filter press, showing a state in which an arm with a filter cloth striking member is lowered and is positioned on both front and rear outer sides of a filter cloth that faces the filter cloth.

FIG. 6 is an enlarged side view of an essential part of the filter press, showing a state in which the opposing filter cloths are being struck from both front and rear sides by the main and auxiliary filter cloth striking members.

FIG. 7 is a schematic side view of the entire filter press.

[Explanation of symbols]

 6 Gate-shaped moving body 7 Filter plate 7a, 7b Filter plate 9 Filter cloth suspension rod 10 Filter cloth 10a, 10b Filter cloth 13 Spring suspension rod 14 Coil spring 15 Chain (connecting member) 16 Cake 20 Arm 21 Main filter cloth tapping Bar (main filter cloth striking member) 22 Auxiliary filter cloth striking member 23 Filter cloth striking weight member 24 Flexible holding member 30 Arm swinging means 40 Lifting mechanism (air cylinder)

Claims (1)

[Claims] 1. A large number of filter plates (7) whose front and rear filtration surfaces are covered with filter cloths (10) and (10), and which are attached to the upper edges of both front and rear filtration cloths (10) and (10), respectively. Filter cloth hanging rod (9) (9) and filter plate
The springs (14) and (14) that are attached to the upper end of (7) and that suspend the left and right ends of the filter cloth suspension rods (9) and (9), and the adjacent filter plate
(7a) (7b) provided with connecting members (15) (15) for connecting both ends of the filter cloth suspension rods (9) (9) facing each other, and a movable body (6) movable back and forth. In the filter press, the movable body (6) is pulled out in a substantially C-shape when viewed from the side in the open plate state after completion of filtration and is positioned above and behind both of the opposing filter cloths (10a) and (10b). Power filter cloth striking member (2
1) A pair of front and rear arms (20) and (20) having (21) at the tips, and hanging arms attached to both arms (20) and (20) and below the main filter cloth striking members (21) and (21). On the side, the auxiliary filter cloth striking member to be positioned on the upper and lower outer sides of the filter cloth (10a) (10b).
(22) (22) and main and auxiliary filter cloth striking members (21) (21) (22) (2
The arm swinging means (30) that swings both arms (20) and (20) by hitting the back surface of the two filter cloths (10a) and (10b) opposite to the cake (16) -attached surface by means of 2), and the filter. Arm with cloth hitting member (20) (2
0) and the arm swinging means (30), the filter plates (7a) in the open state.
A cake removing device in a filter press, which is provided with an elevating mechanism (40) that reciprocates between an intermediate upper position of (7b) and a lower position where both filter cloths (10a) and (10b) should be tapped.