JPS6017209Y2 - Filter plate of filter press - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a filter plate for a filter press, and more specifically to a filter plate for a filter press that uses a wire mesh as a filtering surface.

Conventionally, for example, to filter highly viscous liquids that are difficult to filter, a filter plate with a wire mesh as the filtering surface has been used (Utility Model Act 1977-
(See Publication No. 12208).

This is because the wire mesh constituting the filtration surface and the filter cloth come into contact through so-called point contact, so the effective filtration area of the filter cloth increases and even highly viscous liquids can be effectively filtered.

However, such conventional filter plates have poor pressure resistance,
Another disadvantage was that the filter plate was easily damaged.

In other words, in the conventional filter plate, the first wire mesh has a large number of legs formed by bending the longitude lines into a U-shape, and the second wire mesh has legs formed by bending the latitude lines in the same way. These wire meshes have, for example, 7
kg/af (usually 8 to 15 kg/cIl), the legs would deform or collapse, making it impossible to withstand practical use.

In addition, since a wire mesh with a relatively coarse mesh of about 4 mesh is used as the wire mesh, when the filtration pressure is high or the amount of liquid passed is large, the filter cloth falls into the mesh of the wire mesh and is damaged. There was a drawback to receiving it.

This invention was made to eliminate the drawbacks of the above-mentioned prior art, and its configuration will be explained below based on the embodiments shown in the drawings.

In the drawings, 1 is a filter plate, 2 is a frame constituting the peripheral edge of the filter plate, and two stepped portions 2a and 2b are provided on both sides of the filter plate so that the thickness decreases toward the inside.

3 and 4 are the first and second wire meshes attached to the frame 2;
These are made of stainless steel latitude lines 5 and 6 woven in a plain weave, and both have a coarse mesh of about 4 meshes.

At the periphery of the wire meshes 3 and 4, meridian lines 5 and latitude lines 6 are interconnected by spot welding.

One of the first wire meshes 3 has many legs 7 that are erected by bending the longitude line 5 into a U-shape, and the other second wire mesh 4 has a long line of latitude 6.
It has many legs 8 which are bent and erected in the same way.

The first and second wire meshes 3゜4 are attached to the frame 2 so that the legs 7, 8 are placed inside each other to support the opposing wire meshes 4, 3.
are attached to the inner stepped portions 2b, 2b.

The inner stepped portions 2b, 2b are recessed from the intermediate stepped portions 2a, 2a by at least the thickness of the coarse wire meshes 3, 4.

Further, the leg lines 5 and 6 are made with thicker lines than the other graticule lines 5 and 6.

Reference numerals 9 and 10 denote male headed screws and female headed screws for fixing the peripheral edges of the first and second wire meshes 3 and 4 to the frame 2, and these are through holes drilled in the inner stepped portions 2b and 2b of the frame 2. 11 by both sides and are screwed together.

Reference numeral 12 denotes a required number of spacers interposed between the first and second wire meshes 3 and 4 so as to maintain a constant distance between them. From the outside of 3, insert a headed male screw 1 into this female threaded part 13.
4 is screwed in, the spacer 12 is fixed to the first wire mesh 3.

Reference numeral 15.15 denotes a pair of wire meshes for preventing the filter cloth from falling, which are placed over the outer surfaces of the first and second wire meshes 3 and 4, respectively.These wire meshes have fine meshes of about 8 to 20 meshes, and are made of stainless steel. It is made of wires woven into a plain weave.

The intermediate stepped portions 2a, 2a of the frame 2 are recessed from the outer periphery of the frame 2 by at least the thickness of the filter cloth fall prevention net 15.15, and are recessed from the outer peripheral portion of the frame 2 by at least the thickness of the filter cloth fall prevention net 15.15. are fixed to these intermediate stepped portions 2a, 2a by a required number of headed male screws 16 screwed into both sides of the female screw hole 17, respectively.

In addition, in the above embodiment, the filter cloth fall prevention net 15
．． 15 is made of stainless steel wire mesh,
This may be constructed of a synthetic resin net such as polyethylene or polypropylene.

Further, the spacer 12 is fixed to the wire mesh 3 on one side by a male screw 14, but it may of course be fixed to the wire meshes 3 and 4 on both sides, and any suitable means can be adopted as the fixing means.

Furthermore, the leg lines 5 and 6 of the first and second wire meshes 3 and 4 are made with thicker lines than the other graticule lines 5 and 6, but the wire meshes 3.
Since a spacer 12 is interposed between the two leg lines 5 and 6, these leg lines 5 and 6 may have the same thickness as the other graticule lines 5 and 6.

This invention, as described above, includes a frame 2, a coarse first wire mesh 3 having a U-shaped leg 7 made of bent meridian 5 parts,
The second wire mesh 4 has a coarse mesh having a U-shaped leg 8 formed by a bent latitude line 6, and the first and second wire mesh 3,
4 is the opponent's wire mesh 4 with their legs 7゜8 inside each other.
, 3, the filter plate of the filter press is arranged in the frame 2 so as to support the filter cloth. The intermediate stepped portions 2a, 2a, and the intermediate stepped portion 2a,
2a are provided with inner stepped portions 2b, 2b recessed by at least the thickness of the coarse wire meshes 3, 4, and a fine filter cloth fall prevention mesh 15. 15
are respectively placed on the inner stepped portions 2b, 2b of the frame 2 by screws 9, 10 on the peripheral edges of the first and second wire meshes 3, 4, and a filter cloth is inserted into the intermediate stepped portions 2a, 2a. Since the peripheral edges of the prevention mesh 15.15 are attached by screws 16.16, the first and second wire meshes 3, 4 with coarse mesh and the filter cloth fall prevention mesh 15.15 with fine mesh are attached. and the stepped portions 2a, 2a and 2b, 2b of the frame 2.
It can be installed separately and therefore very easily and reliably.

In addition, the periphery of the inner coarse mesh wire meshes 3 and 4 is the inner stepped portion 2b.
, 2b and is fixed, so the coarse wire mesh 3
, 4 does not get in the way at all, and the outer fine mesh 15, 15
can be stretched under tension.

The peripheral edges of the fine meshes 15, 15 are intermediate stepped portions 2a,
2a and is fixed, so when the filter plate 1 is in the closed state, the outer peripheries of the frames 2 of adjacent filter plates 1 are in close contact with each other only through the filter cloth, which prevents the filter plate 1 from being tightened. The applied force can be made very large, and filtration work can be performed at high pressure.

Since the outer surfaces of the coarse mesh first and second wire meshes 3 and 4 are coated with the fine mesh meshes 15 and 15, respectively, the coarse mesh meshes of the filter cloth are covered even when the filtration pressure is high or the amount of liquid passing through is large. wire mesh 3
, 4 can be prevented from falling into the meshes of the wire meshes 3 and 4, thereby preventing damage to the filter cloth. Furthermore, since the required number of spacers 12 are interposed between the wire meshes 3 and 4, the filter cloth can be prevented from falling into the meshes of the wire meshes 3 and 4. 1 has sufficient pressure resistance, for example 8 to 1
It can withstand a high filtration pressure of 5 kg/al, and has the effect that filtration work with such high force can be carried out efficiently over a long period of time.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention; FIG. 1 is a partial front view of the filter plate, and FIG. 2 is an enlarged view taken along line 1--2 in FIG. 1... Filter plate, 2... Frame, 2a, 2a.
...Middle step part, 2b, 2b...Inner step part, 3, 4...Rough mesh first and second wire mesh,
5... Meridian, 6... Latitude, 7, 8...
... Leg, 12 ... Spacer 15゜15
...Fine mesh to prevent filter cloth from falling in.

Claims (1)

[Scope of utility model registration request] A frame 2, a coarse first wire mesh 3 having a U-shaped leg 7 formed by bent meridian 5 parts, and a coarse second wire mesh 4 having U-shaped legs 8 formed by bent latitude 6 parts. In the filter plate of a filter press comprising: a first and a second wire mesh 3.4 arranged in the frame 2 so as to support the wire mesh 4.3 with their legs 7, 8 inside each other; 2, intermediate stepped portions 2a, 2a recessed from the outer periphery of the frame 2 by at least the thickness of the filter cloth fall prevention net 15.15, and at least coarse wire mesh 3 deeper than the intermediate stepped portions 2a, 2a. ,4
The outer surfaces of the first and second wire meshes 3.4 are each covered with a fine filter cloth prevention mesh 15. The peripheral edges of the first and first wire meshes 3, 4 are attached to the inner stepped portions 2b, 2b with screws 9, 10, respectively, and the peripheral edge of the filter cloth fall prevention mesh 15° 15 is attached to the intermediate stepped portion 2at2a. Attached by screws 16 and 16, respectively,
Between the wire mesh 3 and the second wire mesh 4, a required number of spacers 1 are attached to one of these wire meshes 3 and 4.
2 is interposed between the filter plate of the filter press.