JPH0618565Y2 - Leaf filter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a leaf filter which is adapted to remove a cake, which is a residue attached to a filter cloth on a leaf surface, by vibration.

(Prior Art) Conventionally, this type of leaf filter is constituted by an appropriate number of leaves (1) installed in a tank, as shown in FIGS. 3 and 4, and a filter is provided on both sides of the leaf. A cloth (2) is stretched and a core net (3) for supporting the filter cloth is installed between the filter cloths, and a short tubular nozzle or nipple (4) for taking out the filtered liquid is provided at the lower end of the leaf (1). ) Is provided. More Leaf (1)
A shaft (5) is installed at the appropriate position to apply vibration to the shaft.

In this leaf filter, the liquid to be filtered flows from the outside to the inside of the filter cloth (2), and the liquid filtered through the filter cloth is nipple.
Taken out from (4). The cake adheres to the surface of the filter cloth (2) as the filtration time elapses. When such cake adheres, the vibrator (not shown) applies vibration to the shaft (5), and thus the shaft (5) passes through the shaft (5). Vibration such as reciprocating motion is applied to the entire leaf to separate the cake.

(Problems to be solved by the invention) Since the filter cloth (2) in the conventional leaf is only fixed at the periphery, slack that occurs in the filter cloth even when vibration is applied to the leaf when peeling the cake Therefore, there is a problem that the filter cloth does not vibrate sufficiently, especially in the portion close to the center, and thus the cake removability is poor.

An object of the present invention is to solve the above problems, and therefore to provide a leaf filter capable of effectively transmitting the vibration of the filter cloth of the leaf.

(Means for Solving the Problems) The constitution that characterizes the leaf filter according to the present invention is that a suitable number of filter cloth bands are provided between the filter cloth (2) and the core net (3) provided between the filter cloths. (10) is provided, and the filter cloth and the core net are connected to each other through the band.

(Operation of means for solving the problem) When vibration is applied to the vibration receiving shaft (5) by the vibrator, the vibration is applied to the frame (6) around the leaf and each band from the frame.
(10), so the filter cloth is frame (6) and band (10)
Since it is vibrated through, almost the entire surface of the filter cloth vibrates,
The cake is properly peeled off.

(Embodiment) FIGS. 1 and 2 show an embodiment of the present invention. As shown in the drawings, in the leaf filter according to the present invention, the leaf (1) has a filter cloth (2) stretched on both sides. ), A core mesh that supports the filter cloth
(3) It includes a nipple (4) at the lower end of the leaf for taking out the filtered liquid and a vibration receiving shaft (5) provided at an appropriate position of a frame (6) forming the periphery of the leaf.

In this leaf filter, as clearly shown in Fig. 2, a band (10) is installed between the filter cloth (2) and the core net (3) on both sides of the leaf,
The band (10) is fixed to the filter cloth (2) and the core net (3) by any suitable means, preferably by sewing, and thus the filter cloth
(2) and the core net (3) are connected to each other via the band (10).

The installation position of the band (10) may be any position as long as vibration can be suitably transmitted to the filter cloth (2), and the band (10)
In the example shown in the figure, two are provided at appropriate intervals above and below, but in some cases, one may be provided, or three or more may be provided. Also, the band (1
Although 0) is provided horizontally in the illustrated example, it may be provided vertically or obliquely if desired.

Furthermore, the band (10) is formed of the material of the filter cloth, preferably made of the same material as the filter cloth (2) used for the leaf (1), but it is not necessarily the same material. Depending on the case, the filter cloth (2) may be made of a material different from that of the filter cloth.

Also in this leaf-shaped filter, the liquid to be filtered is filtered from the outside to the inside of the filter cloth (2), that is, into the leaf (1) and passing through the filter cloth (2) as in the conventional case. The liquefied liquid is taken out from the nipple (4). By continuing such filtration, cake as a residue adheres to the surface of the filter cloth (2). Since the filtration performance deteriorates due to the adhesion of cake, vibration is applied to the vibration bearing (5) by a vibrator (not shown) after a suitable filtration time, the entire leaf (1) is vibrated, and normally reciprocated. Peel off the cake from the filter cloth (2).

When the cake is peeled by the vibration, the vibration applied to the vibration receiving shaft (5) is transmitted from the frame (6) around the leaf and the frame (6) to each band (10), so that the filter cloth (2) is framed. Since the filter cloth (2) is vibrated by (6) and the band (10) and the slack of the filter cloth (2) is reduced by the band (10), the entire surface of the filter cloth (2) vibrates, and the cake is suitably peeled off. .

(Effect of the Invention) As described above, according to the present invention, the band prevents the slack of the filter cloth and effectively transmits the vibration. Therefore, the vibrator vibrates the leaf vibration receiving shaft. By loading the filter cloth, the filter cloth can be effectively vibrated, and the cake releasability is remarkably improved.

[Brief description of drawings]

FIG. 1 is a front view of a leaf of a leaf filter according to an example of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, FIG. 3 is a front view of a conventional leaf, and FIG. FIG. 3 is a sectional view taken along line BB of FIG. 3. In the figure, 1: leaf, 2: filter cloth, 3: core net, 4: nipple, 10: band

Claims (3)

[Scope of utility model registration request] 1. A leaf comprising a filter cloth stretched on both sides, a core net inserted between the filter cloths, and a nipple provided at a lower portion for taking out a liquid filtered by the filter cloth, the filter comprising: In a leaf filter adapted to remove the cake adhering to the cloth surface by vibration, a filter cloth band is provided between the filter cloth and the core net, and the filter cloth and the core are inserted through the band. A leaf-shaped filter characterized by being connected to the net. 2. A utility model registration claim in which a plurality of the bands are installed between the filter cloth and the core net.
The leaf-shaped filter according to item. 3. The leaf filter according to claim 1, wherein the band is made of a filter cloth made of the same material as the filter cloth.