JPS6323933Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of a vibrating leaf filter.

This type of filtration machine includes a series of vertically juxtaposed filter leaves in a filtration tank, with nozzles located in a manifold below a fulcrum axis on one side of each leaf, and It is equipped with a vibration machine and a connecting rod that is connected to the vibration machine and has a series of engaging parts that engage with each filter leaf, and is oscillated about a fulcrum shaft and a nozzle in order to peel off filter slag attached to each filter leaf. However, in the conventional structure, the nozzle slides against the manifold, so a tapered nozzle with poor movement cannot be used, and the leaf insertion part, that is, the outer circumference of the nozzle, is Although a ring is provided, the O-ring wears out due to the sliding of the nozzle, and the disadvantage is that the stock solution leaks and mixes with the filtered solution. Moreover, since each filter leaf is supported in a cantilevered manner, an eccentric load is applied to the nozzle position, which has the disadvantage of accelerating the wear of the O-ring.

The purpose of the present invention is to solve the above-mentioned problems of the prior art.
- It is an object of the present invention to provide a leaf filter having a structure in which there is no leakage from a ring and in which a tapered nozzle can be used.

A feature of the leaf filter according to the present invention is that each filter leaf consists of a fulcrum shaft area and a filter surface area, and these areas are interconnected by hinges, as described below with reference to the drawings. Next, an embodiment of the present invention will be described.

As shown in the figure, the leaf filter to which the present invention relates includes a filter tank 1 and a series of filter leaves 2 arranged vertically inside the filter tank 1, each side of which is covered by a filter medium 2'. It has a formed filtration surface. As shown in FIG. 2, a nozzle 3 for receiving the filtrate is attached to the lower part of each filter leaf 2, and each nozzle 3 is installed in a common manifold 4. Further, a vibrator 5 is installed at a suitable position in the tank 1, and one end of a connecting rod 6 inserted into the tank is connected via a sealable expansion joint 7 such as a bellows. Connecting rod 6
The opposite end of is slidably supported by a support member 8, as seen in FIG. Further, the connecting rod 6 is provided with a series of engaging portions 9 that fit into the green of each filter leaf 2, and the engaging portions 9 may be a pair of protrusions that sandwich the green of the filter leaf 2, or a recess. Furthermore, a fulcrum shaft 10 is provided at the upper part of one side of each filter leaf 2,
Nozzle 3 is located directly below it. Each fulcrum shaft 10 is fitted into a hole in the support plate 11. In the figure, 12 is an inlet pipe for the stock solution.

In the conventional structure, each filter leaf 2 is swung by the vibrator 5 with the fulcrum shaft 10 and the nozzle 3 as fulcrums, so the nozzle 3 has an O surrounding it as shown in FIG.
- Since the ring 13 was provided to prevent leakage of the stock solution, there were the above-mentioned drawbacks.

The feature of the leaf filter according to the present invention is that, as clearly shown in FIG.
a and a filter surface section 2b constituting the main part of the filter leaf, which sections are interconnected by a suitable number of hinges 14. As is clear from FIG. 3, the central part forming the framework of the filter leaf 2 is divided into the two sections, connected by a hinge 14 and surrounded together by a filter medium 2'.

In this way, the main area 2b of the filtration surface is connected to the area 2a of the fulcrum axis by the hinge 14 and is therefore swingable, so that the nozzle 3 is fixed to the manifold 4 and is held in place by a bearing. YaO-
There is no need to provide a ring. The nozzle 3 is therefore included in the area 2a of the fulcrum axis.

In operation, the stock solution to be filtered is fed into the filtration tank 1 through the inlet pipe 12, filtered by the filtering surface of each filter leaf 2, and the filtered liquid flows down inside the filter leaf and passes through the respective nozzle 3. The water is collected in the manifold 4, from where it is discharged to the outside. As the filtration time elapses in this manner, filter slag adheres to the filter media 2' on both sides of the filter leaf 2 as shown in Fig. 1, but when the attached filter slag reaches a certain thickness, manual or appropriate control The vibration exciter 5 is actuated by the system, and the connecting rod 6 is reciprocated and linearly moved in the axial direction, and the area 2a of the filtering surface of each filter leaf 2 is moved by a series of engagement parts 9 using the position of each hinge 14 as a fulcrum. It vibrates pivotally and peels off the filter cake. Note that if the expansion joint 7 is used, a completely sealed structure can be obtained, and volatile liquids and liquids harmful to the human body can be filtered. Further, the vibration of the connecting rod 6 is absorbed by the expansion joint and is not transmitted to the filter tank 1, so there is less noise.

Therefore, according to the present invention, the filter slag attached to each filter leaf can be properly peeled off by vibration, and there is no need to slide the nozzle of each filter leaf with respect to the manifold below it. As seen in Figure 2, a tapered nozzle can be used. Therefore, the structure for mounting the nozzle to the manifold is simplified and O-rings are not required. Also,
Since it does not swing at the nozzle position, there is no need to use a bearing or an O-ring, and there is no problem such as leakage of the stock solution due to wear of the O-ring.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a leaf filter according to an example of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIG. 3 is an elevational view of an example of a filter leaf used in the present invention. FIG. 4 is an elevational view showing a conventional filter leaf. In the figure, 1... Filter tank, 2... Filter leaf, 2a... Area of fulcrum axis, 2b... Area of filtration surface, 3... Nozzle, 4... Manifold, 5... Vibrator, 6... ...Connecting rod, 9...Engaging portion, 10...Fully shaft, 14...
hinge.

Claims (1)

[Claims for Utility Model Registration] (1) A filter comprising a series of vertically juxtaposed filter leaves in a filtration tank, with a nozzle installed in a manifold below a fulcrum shaft located at the top of one side of each filter leaf. , further comprising a vibration exciter for applying vibration to each filter leaf, and a connecting rod connected to the vibration exciter and having a series of engagement portions for engaging each filter leaf, each filter leaf having a fulcrum point. A leaf filter characterized in that it consists of a shaft section and a filter surface section, which sections are interconnected by hinges. (2) The leaf filter according to claim 1, wherein the outer peripheral surface of the nozzle of each filter leaf is a tapered surface.