JPH0647045B2 - Filter cloth support and opening / closing device for filter press - Google Patents

Description

TECHNICAL FIELD The present invention relates to a filter cloth supporting and opening / closing device of a filter press.

2. Description of the Related Art Conventionally, a pair of filter cloths covering the front and rear filtration surfaces of a filter plate have been attached to the filter plate as follows. That is,
Filter cloth suspension rods are attached to the upper edge of the filter cloth, and the left and right ends of each filter cloth suspension rod are U-shaped when viewed from the front, which are provided on the upper ends of the left and right side walls of the filter plate in a protruding shape. The cloth hanging members are respectively hung on the upper horizontal portions of the cloth hanging members via tension springs, and the filter cloth hanging rods of the adjacent filter plates facing each other are connected by a connecting member such as a chain or wire having a predetermined length. (For example, JP-A-62-11513
(See the official gazette).

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, according to such a filter cloth suspending device for a conventional filter press, when adjacent filter plates are opened with a required distance from each other after the completion of squeeze filtration, a connecting member such as a chain is provided. Since the length of the filter cloth is shorter than the opened distance between the two filter plates, the upper ends of the filter cloths facing each other are pulled out inward, but at this time, the spring force of the filter cloth suspension spring causes the filter cloths once opened. The plates are slightly returned, and the space between the two filter plates becomes narrower, which causes the vibrator of the filter cloth vibrator and the cleaning pipe of the filter cloth cleaning device to be displaced, and the center of the two filter plates opened. Therefore, it is not possible to smoothly perform the vibration removing work and the cleaning work of the cake. Further, in the conventional filter cloth hanging device of the filter press, the structure is complicated and the equipment is troublesome, and a U-shaped filter cloth hanging member when viewed from the front is provided at the upper end portions of the left and right side walls of each of the many filter plates. Since the filter plates are provided in a protruding shape, each filter plate becomes very bulky, and there are many problems such that the filter press cannot be made compact.

Therefore, conventionally, the upper edge portion of the filter cloth covering the front and rear filtering surfaces of the filter plate is supported by the filter cloth tension rod, and the filter cloth tension rod has a long U-shaped notch portion that opens upward. And a compression coil spring housed inside the guide tubular body, and a slider attached to the upper end of the compression coil spring. A filter press has been proposed in which a filter cloth can be attached and the filter cloth is opened by a swing arm and a filter cloth spreading member (see, for example, Japanese Utility Model Laid-Open No. 1-122808).

According to the conventional filter filter proposed in the past,
It is possible to eliminate the adverse effects such as the displacement of the filter plate due to the conventional connecting member such as the chain, the entanglement of the chain, and the complexity of the filter cloth attaching work, and the attachment of the connecting member such as the chain can be omitted. Although there is an advantage that the vibrator of the cloth vibrating machine and the cleaning pipe of the filter cloth cleaning device can be surely positioned, the vibration removing work of the cake and the cleaning work can be smoothly performed. Since the support mechanism, the swing arm, and the filter cloth spreading member are provided on the left and right outer sides of each of the plurality of filter plates,
There is a problem that it is not compact and its appearance is inferior, and that its configuration is relatively complicated, resulting in high manufacturing cost.

An object of the present invention is to solve the above-mentioned problems of the prior art, and to attach a filter cloth to each filter plate itself supported by a side plate, and to filter a filter cloth tension rod supporting mechanism and a filter cloth pushing open mechanism. It can be attached to the inside of the plate, it is very compact and therefore has a good appearance, and the overall size of the filter press can be made compact, and the configuration is very simple and the manufacturing cost is low. There is an object to provide a filter cloth supporting and opening / closing device in a filter press.

Means for Solving the Problems In order to achieve the above-mentioned object, the present invention has an upper edge portion of a filter cloth covering both front and rear filtering surfaces of a filter plate supported by a filter cloth tension rod, In a filter press supported by a pair of filter cloth tension rod supporting mechanisms equipped with compression coil springs, a pair of left and right bases are fixed to the upper surface of a filter plate, and the filter cloth tension rod supporting mechanism rises on each base. Attached to each other, a cutout portion is provided in the filter cloth portion where the filter cloth tension rod support mechanism is present, and a spring portion having a pair of swingable front and rear vertical connecting portions is provided on each base on the upper surface of the filter plate. , A filter cloth push-opening mechanism having a filter cloth push-opening horizontal portion provided at the tip of each vertical connecting portion is provided,
When the filter cloth tension rod is urged upward by the elastic force of the compression coil spring of the filter cloth tension rod support mechanism and the filter cloth is tensioned, the filter cloth pushing mechanism of each filter cloth pushing opening mechanism is pressed. When the horizontal part for opening and the vertical connecting part are closed by the filter cloth, and the filter cloth tension rod is lowered by the vibrator of the filter cloth vibrating device against the elastic force of the compression coil spring, When the tension is loosened, the horizontal part and the vertical connecting part for opening the filter cloth of the spring part of the filter cloth opening mechanism are opened, and the filter cloth swells to both the front and rear sides and opens. The main point is the filter cloth supporting and opening / closing device.

According to the filter cloth supporting and opening / closing device of the above-mentioned filter press,
A pair of left and right bases are fixed to the upper surface of the filter plate, and the filter cloth tension rod supporting mechanism is attached to each base in a rising shape. Further, notches are provided in the filter cloth portions where the filter cloth tension rod supporting mechanism exists. A filter cloth pressing device having a spring portion having a pair of swingable front and rear vertical connecting portions on each base on the upper surface of the filter plate, and a filter cloth pushing open horizontal portion provided at the tip of each vertical connecting portion. An opening mechanism is provided.

Therefore, according to the present invention, the filter cloth can be attached to each filter plate itself, and further, the filter cloth tension rod supporting mechanism and the filter cloth push-opening mechanism can be installed inside the filter plate, which is very compact. The appearance is excellent and the overall filter press can be made compact. Further, the filter cloth supporting and opening / closing device has a very simple structure, and the manufacturing cost is low.

Further, when the filter cloth tension rod is urged upward by the elastic force of the compression coil spring of the filter cloth tension rod support mechanism and the filter cloth is stretched in a tension state, the filter cloth pressing mechanism of each filter cloth tension opening mechanism is pressed. When the horizontal portion for opening the cloth and the vertical connecting portion are closed by the filter cloth, and the filter cloth tension rod is lowered by the vibrator of the filter cloth vibrating device against the elastic force of the compression coil spring, Since the tension of the cloth is loosened, the horizontal part for pressing the filter cloth opening and the vertical connecting part of the spring part of the filter cloth pressing mechanism are opened, and the filter cloth swells to both the front and rear sides to open. The vibration removing work of the cake can be performed extremely quickly and reliably.

Embodiment Next, an embodiment of the present invention will be described based on the drawings.

1 to 7 showing the first embodiment of the present invention,
The filter plate (1) of the filter press is composed of a substrate and an elastic body such as a rubber plate having a filtrate flow-down groove on the surface covered on both sides of the substrate, and a stock solution introduction hole (2) is opened at the bottom thereof. Has been. A filter cloth (3) covering both the front and rear filtration surfaces of the filter plate (1)
Is a so-called one piece, and the filter cloth (3) is folded in two, and the upper edge bent portion (3a) of the filter cloth (3) is hung on and supported by the filter cloth tension rod (4).

Corresponding to the undiluted solution introduction hole (2) at the bottom of the filter plate (1), there is a hole communicating with the undiluted solution introduction hole (2) in the filter cloth (3) on both sides of the filter plate (1). In the peripheral portion of the hole (2), the peripheral portion of the hole of the filter cloth (3) is a pair of male and female filter cloth pressing screw rings (33) (3
It is held against the filter plate (1) by 4).

Also, tie the strings (8) (8) on the left and right edges of the filter cloth (3) near the lower end.
Are attached, and these are tied to the pins (9) (9) near the lower ends of the left and right sides of the filter plate (1).

If the filter cloth (3) covering the front and rear surfaces of the filter plate (1) is not a single piece, the upper edges of these are joined together by an appropriate means and hung on the filter cloth tension rod (4). At the same time, the two filter cloths (3) are attached to each other so that the inner wall of the hole (2) is covered with the filter cloth (3) at the part of the stock solution introducing hole (2) of the filter plate (1). It can also be connected to.

Further, filtrate outlets (7) are formed on both sides of the lower end of the filter plate (1). A pair of hangers (6) (6) provided on both left and right side surfaces of the filter plate (1) are slidably supported by left and right side bars (5) (5).

In the present invention, a compression coil spring (1) that constantly urges the filter cloth tension rod (4) upward is provided at a predetermined position on the upper surface of the filter plate (1).
A pair of left and right filter cloth tension rod supporting mechanisms (10) and (10) having 3) are provided.

Each filter cloth tension rod support mechanism (10) is attached to the upper surface of the filter plate (1) by two bolts (18) and (18) and is attached to the base (11) in a standing manner. And a guide coil body (12) having long U-shaped notches (15) (15) open upward on both left and right sides, and a compression coil spring (13) housed in the guide cylinder body (12). And a slider (14) attached to the upper end of the compression coil spring (13) and having a notch (16) for fitting a filter cloth tension rod. Notches (19) and (19) are provided in the filter cloth (3) where the filter cloth tension rod supporting mechanism (10) (10) exists, and these notches (19) are provided. (19), filter cloth tension rod support mechanism (10) (10)
The guide cylinders (12), (12) are fitted.

The left and right filter cloth tension rod support mechanisms (10) and (10) are provided with protrusions (17) and (17) at opposite edges of the base (11). A filter cloth push-open mechanism (20) is attached.

Each filter cloth pushing open mechanism (20) has a pair of swingable vertical connecting portions (23) (23) and is a coiled spring wound around the convex portion (17) of the base (11). The parts (21) (21) and the spring force of these spring parts (21) (21) connect the front and rear vertical connecting parts (23) (2).
It consists of a pair of front and rear filter cloth push-opening horizontal parts (22) (22) that are urged to open the middle part of the filter cloth (3) on both sides of the filter plate through the 3). In this embodiment, the filter cloth pushing mechanism (20) is made by bending two spring steel wire rods.

Here, the elastic force of the compression coil spring (13) in the filter cloth tension rod support mechanism (10) is larger than the elastic force of the coiled spring portion (21) in the filter cloth pressing mechanism (20). Therefore, in a normal state, the elastic force of the compression coil spring (13) urges the slider (14) and the filter cloth tension rod (4) upward, and the filter cloth (3) is in the most tensioned state. The filter cloth push-opening mechanism (20) has a horizontal portion (22) (22) for pushing the filter cloth open while being stretched.
And the vertical connecting parts (23) (23) are closed by the filter cloth (3).

After the squeeze filtration is completed, the vibrator (24) of the filter cloth vibrating device is attached to the filter cloth tension rod (4) in a state in which the filter plate (1) is moved by a predetermined interval by the operation of the filter plate feeder (not shown). When hitting from above, the filter cloth tension rod (4) descends and the upper edge portion (3a) of the filter cloth (3) is lowered as shown by the two-dot chain line in FIG. 4 and the solid line in FIG. 5, respectively. The tension of the filter cloth (3) is loosened by this, and the elastic force of the coil-shaped spring portion (21) of the filter cloth pressing mechanism (20) causes the horizontal parts (2) for pressing the filter cloth on both sides.
2) (22) and vertical connection (23) (23) open, filter cloth (3)
Swells to both the front and rear sides and opens, and the filter cloth (3) is vibrated. By repeating this vibration, for example, 2 to 5 times, the vibration is effectively transmitted to the entire surface of the filter cloth (3), and the cake is peeled off very quickly and surely.

8 to 10 show a second embodiment of the present invention. Here, the difference from the case of the first embodiment is the structure of the filter cloth pressing mechanism (25).

That is, the filter cloth push-opening mechanism (25) is a spring portion composed of a leaf spring having a pair of front and rear swingable vertical connecting portions (27, 27).
(26) and a pair of front and rear horizontal parts (28) (28) for pushing open the filter cloth, which are attached to the ends of the vertical connecting parts (27) (27) by welding.
It has and.

Here, the spring portion (26) having a pair of swingable front and rear vertical connecting portions (27) and (27) is made of a leaf spring, and these both vertical connecting portions (27) and (27) are The horizontal portion (28) (28) for opening the filter cloth is urged by the spring force so as to push open the intermediate portions of the filter cloth (3) on both sides of the filter plate to the front and rear sides. The horizontal portions (28, 28) for pushing the filter cloth are made of two wire rods made of spring steel.

In this second embodiment, the elastic force of the compression coil spring (13) of the filter cloth supporting mechanism (10) constitutes the vertical connecting portions (27) (27) of the filter cloth pushing mechanism (20). Other points such as the fact that it is made larger than the elastic force of the leaf spring
Since it is similar to the case of the embodiment, the same components are denoted by the same reference numerals in the drawings.

FIG. 11 shows a third embodiment of the present invention. Here, the point different from the case of the second embodiment is that the upper edge portions (3b) and (3b) of the filter cloth (3) are separated into two, and the upper edge portions (3b) (3b) of these filter cloths are separated. Filter cloth tension rods (4a) (4a) are attached to 3b) respectively, and both filter cloth tension rods (4a) (4a) are used to filter the filter cloth tension rod support mechanism (10) slider (14). It lies in the fact that it is fitted together with the notch (16) for rod fitting. Therefore, in this case, although not shown, at the portion of the stock solution introducing hole (2) of the filter plate (1), a filter cloth is provided along the inner peripheral wall of the hole (2).
(3) may be covered and the filter cloths (3) on both sides of the filter plate (1) may be connected to each other.

FIG. 12 shows a fourth embodiment of the present invention. Here, the point different from the case of the second embodiment is the structure of the filter cloth tension rod supporting mechanism (10).

That is, the filter cloth tension rod support mechanism (10) is attached to the base (11) fixed to a predetermined position on the upper surface of the filter plate (1) with a pair of bolts (not shown), and is attached to the base (11) in a rising shape. Spindle (30) with a tapered tip (30a)
A slider (31) attached to the filter cloth tension rod (4) and having a spindle insertion hole (32), and passed over the base (11) and slider (31) wound around the spindle (30). Compression coil spring (13).

Then, in a normal state, the slider (31) and the filter cloth tension rod (4) are constantly urged upward by the elastic force of the compression coil spring (13), and the filter cloth (3) is tensioned most. In addition, the horizontal part (28) for opening the filter cloth of the filter cloth opening mechanism (25)
The point that (28) is closed by the filter cloth (3) is the same as in the case of the second embodiment.

FIG. 13 shows a fifth embodiment of the present invention. Here, the point different from the case of the second embodiment is the structure of the filter cloth tension rod supporting mechanism (10).

That is, the filter cloth tension rod support mechanism (10) is a tubular guide member (35) fixed in a rising shape at a predetermined position on the upper surface of the filter plate (1).
A spindle (38), which is attached to the filter cloth tension rod (4) so as to be hung downwardly and whose tip is inserted into the hole (36) of the tubular guide member (35), and an annular step. The cylindrical guide member (35) above the portion (37) and the compression coil spring (13) wound around the spindle (38) are provided.

Then, in the normal state, the spindle (38) and the filter cloth tension rod (4) are constantly urged upward by the elastic force of the compression coil spring (13), and the filter cloth (3) is tensioned most. In addition, the horizontal part (28) for opening the filter cloth of the filter cloth opening mechanism (25)
The point that (28) is closed by the filter cloth (3) is the same as in the case of the second embodiment.

The other points of the third to fifth embodiments are the same as those of the second embodiment.
Since it is similar to the case of the embodiment, the same components are denoted by the same reference numerals in the drawings.

EFFECTS OF THE INVENTION As described above, according to the present invention, the upper edge portion of the filter cloth covering the front and rear filtering surfaces of the filter plate is supported by the filter cloth tension rod, and the filter cloth tension rod includes a pair of compression coil springs. In the filter press supported by the filter cloth tension rod supporting mechanism, a pair of left and right bases are fixed to the upper surface of the filter plate, and the filter cloth tension rod supporting mechanism is attached to each base in a rising shape. Notches are provided in the filter cloth portions where the rod supporting mechanism is present. On each base on the filter plate,
A spring portion having a pair of front and rear swingable vertical connecting portions;
There is provided a filter cloth push-opening mechanism having a filter cloth push-opening horizontal portion provided at the tip of each vertical connecting portion.

Therefore, according to the present invention, the filter cloth can be attached to each filter plate itself, and further, the filter cloth tension rod supporting mechanism and the filter cloth push-opening mechanism can be installed inside the filter plate, which is very compact. Yes, with a good appearance,
The overall size of the filter press can be reduced. Further, the filter cloth supporting and opening / closing device has a very simple structure, and the manufacturing cost is low.

Further, when the filter cloth tension rod is urged upward by the elastic force of the compression coil spring of the filter cloth tension rod support mechanism and the filter cloth is stretched in a tension state, the filter cloth pressing mechanism of each filter cloth tension opening mechanism is pressed. When the horizontal portion and the vertical connecting portion for opening the cloth are closed by the filter cloth, and the filter cloth tension rod is perforated by the elastic force of the compression coil spring and lowered by the vibrator of the filter cloth vibrating device, Since the tension of the cloth is loosened, the horizontal part for pressing the filter cloth opening and the vertical connecting part of the spring part of the filter cloth pressing mechanism are opened, and the filter cloth swells to both the front and rear sides to open. The effect that the vibration removal work of the cake can be performed extremely quickly and reliably is achieved.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a front view of a filter plate provided with the product of the present invention of the first embodiment, and FIG. 2 is a partially cutaway right side view of the filter plate. It shows a state in which the filter cloth is closed. FIG. 3 is an enlarged vertical sectional view of an essential part of the product of the present invention of the first embodiment, showing a state in which the filter cloth is closed. FIG. 4 is an enlarged right side view of the essential part of the product of the present invention, in which the closed state of the filter cloth is shown by a solid line and the opened state of the filter cloth is shown by a chain line. FIG. 5 is a right side view of the filter plate of FIG. 1 with a part thereof being cut away, showing a state in which the filter cloth is opened. FIG. 6 is an enlarged horizontal sectional view of an essential part taken along the line VI-VI in FIG. 3, and the illustration of the filter cloth is omitted.
FIG. 7 is an enlarged front view of the relevant part. 8 to 10 show a second embodiment of the present invention, and FIG. 8 is an enlarged right side view of the essential part of the product of the present invention of the second embodiment, in which the closed state of the filter cloth is indicated by a chain line. In addition, the open state of the filter cloth is shown by solid lines. FIG. 9 is an enlarged horizontal sectional view of an essential part taken along the line IX-IX in FIG. 8, showing the opened state of the filter cloth. FIG. 10 is an enlarged front view of the relevant part. FIG. 11 is an enlarged right side view of the essential parts of the product of the third embodiment, FIG. 12 is an enlarged right side view of the essential parts of the product of the fourth embodiment, and FIG. 13 is a book of the fifth embodiment. FIG. 3 is an enlarged right side view of a main part of the invention product, which corresponds to FIG. 3, respectively. (1) ... filter plate, (3) ... filter cloth, (4) ... filter cloth tension rod, (10)
…… Filter cloth tension rod support mechanism, (11) …… Base, (12) …… Guide cylinder, (13) …… Compression coil spring, (14) …… Slider, (19) …… Notch part, (20) (25) …… Filter cloth pushing open mechanism,
(21) (26) …… Spring part, (22) (28) …… Horizontal part for pushing open filter cloth, (23) (27) …… Vertical connection part, (30) …… Spindle,
(31) …… Slider, (35) …… Cylindrical guide member, (38)…
… Downward spindle.

Claims (1)

[Claims] 1. A filter cloth tension rod, wherein the upper edge of the filter cloth (3) covering both the front and rear filtration surfaces of the filter plate (1) is supported by a filter cloth tension rod (4).
In a filter press in which (4) is supported by a pair of filter cloth tension rod supporting mechanisms (10) including a compression coil spring (13), a pair of left and right bases (11) are provided on the upper surface of the filter plate (1).
Is fixed, and the filter cloth tension rod support mechanism (1
The filter cloth tension rod support mechanism (1)
The filter cloth (3) where (0) is present is provided with cutouts (19), and each base (11) on the upper surface of the filter plate (1) is provided with a pair of swingable vertical connecting portions (23). ) (27) with spring (21) (26)
And a filter cloth push-opening mechanism (20) (2) provided with the filter cloth push-opening horizontal portions (22) (28) provided at the tips of the vertical connecting portions (23) (27).
5) is provided, the filter cloth tension rod (4) is biased upward by the elastic force of the compression coil spring (13) of the filter cloth tension rod support mechanism (10), and the filter cloth (3) is When tensioned, the filter cloth pushing-open mechanism (20) has a horizontal portion (22) (2)
8) and the vertical connecting portions (23) (27) are closed by the filter cloth (3), and the filter cloth tension bar is attached by the vibrator (24) of the filter cloth vibrating device.
When (4) is lowered against the elastic force of the compression coil spring (13), the tension of the filter cloth (3) becomes loose, and the spring of the filter cloth opening mechanism (20) (25) The horizontal parts (22) (28) and the vertical connecting parts (23) (27) for opening the filter cloth of the parts (21) (26) are opened and the filter cloth is opened.
(3) is designed to bulge outward on both front and rear sides,
Filter cloth support and opening / closing device for filter press.