JPH0133127Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a compressed filter plate of a filter press.

BACKGROUND ART Conventionally, in order to reinforce the filter plate of a filter press, for example, as shown in FIG.
Spacing protrusions 25 and 26 are provided at several locations on the filtering surface portion of the ordinary filter plate 22, and the protrusions 25 and 26 of the mutually adjacent compressed filter plate 21 and ordinary filter plate 22 are connected to the rubber plate 24 and These protrusions 25, 2 are brought into surface contact through the filter cloth 27 to reduce the uneven pressure applied to the filter surface.
I was trying to receive it by 6. However, in the conventional squeeze filter plate 21, the spacing maintaining protrusions 2
5 is integrally provided on the substrate 23, and the rubber plate 2
Therefore, since the rubber plate 24 is interposed between the protrusion 25 of the compressed filter plate 21 and the protrusion 26 of the ordinary filter plate 22, this rubber plate 2
There was a problem that the protrusion contact portion 24a of No. 4 was torn due to the uneven pressure applied to the filter surface.

Purpose of the invention The purpose of this invention is to solve the problems of the prior art described above, to prevent the rubber plate from tearing due to uneven pressure applied to the filter surface, to have excellent pressure resistance, and to withstand long-term use. To provide a compressed filter plate for a filter press which has good cake releasability, has a simple structure, and can be easily and inexpensively manufactured.

Structure of the Device In order to achieve the above object, this device is equipped with a substrate and a rubber plate that is placed on both the front and rear surfaces of the substrate and has filtrate grooves on the filtration surface, and the required amount of the portion of the substrate corresponding to the filtration surface is A swollen portion is provided on both the front and rear sides of the location, and recesses are provided on both the front and rear surfaces of the swell, and a portion of the rubber plate is partially fitted into the recess at a location corresponding to the recess on the filtration surface of each rubber plate. A space-maintaining hard thick-walled part is provided which is made of a rubber plate and is harder than other parts of the rubber plate, and the space-keeping protrusion provided on the filtration surface of the adjacent ordinary filter plate is received by the hard thick-walled part. The gist of this paper is the compressed filter plate of the filter press, which is designed as follows.

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

In FIGS. 1 and 2 showing an embodiment of this invention, 1 is a compressed filter plate of a filter press according to this invention, 2 is an ordinary filter plate, and these filter plates 1 and 2 are arranged alternately.

The compressed filter plate 1 includes a substrate 3 and a rubber plate 4 which is placed on both the front and rear surfaces of the substrate 3 and has a filtrate groove 6 on a filtering surface 5. Reference numeral 7 denotes bulges provided at four locations in the portion corresponding to the filtering surface of the substrate 3 so as to swell on both the front and rear sides, 8 indicates recesses provided on both the front and rear surfaces of each bulge 7, and 9 indicates these recesses. 8, these thick-walled hard wall portions for spacing are provided at four locations on the filtering surface 5 of the rubber plate 4, and these thick-walled portions 9 protrude inward and partially fit into the recessed portions 8. The rubber plate 4 is made harder than the other portion 4a of the rubber plate 4. Here, it is preferable that the hard thick portion 9 has a hardness of about 72 to 78 degrees, and the other portion 4a of the rubber plate 4 has a hardness of about 60 to 66 degrees.
Both the recessed part 8 and the hard thick part 9 partially fitted therein are circular when viewed from the front, but they may both have the same square shape.

The ordinary filter plate 2 has the same structure as the conventional one,
This is done at a predetermined location on the filter surface 11 of the filter plate main body 10.
Two spacing maintaining protrusions 12 are integrally provided. Reference numeral 13 denotes a filter cloth, which covers both the front and rear surfaces of the compressed filter plate 1 and the front and rear surfaces of the ordinary filter plate 2, respectively.

In the above, when the filter press is in the closed state, the spacing protrusions 12 of the ordinary filter plate 2,
The spacing-maintaining hard thick-walled parts 9 of the pressing filter plate 1 are butted against each other, and when filtration work is performed in this state, the uneven pressure generated on the other filtering surface 5 or 11 is caused by the projections 12 and the hard thick-walled parts 9. The hard thick part 9 can be received by the other part 4 of the rubber plate 4.
It is harder and thicker than a, and
Because it partially fits into the recessed part 8 of the board 3,
Even when pressed, the compressed filter plate 1 can sufficiently absorb uneven pressure without causing deformation as a whole, can reliably prevent damage due to elongation of the rubber plate 4, and can withstand long-term use. It is.

Further, the concave portion 8 of the bulging portion 7 of the substrate 3 of the compressed filter plate 1
Since the outer surface of the hard thick-walled part 9 for spacing, which is partially fitted inside, is smoothly connected to the surface of the other part 4a of the rubber plate 4, the cake can be easily removed after filtration, and the cake can be removed easily. Removal work is easy.

Effects of the invention As described above, the compression filter plate of the filter press according to this invention includes the substrate 3 and the rubber plate 4 which is placed on both the front and rear surfaces of the substrate 3 and has filtrate grooves 6 on the filtration surface 5. A swollen portion 7 is provided on both front and rear sides of the base plate 3 at required locations corresponding to the filtration surface, and concave portions 8 are provided on both the front and rear surfaces of the swollen portion 7, and the filtration surface of each rubber plate 4 is A space-maintaining hard thick-walled part 9 that partially fits into the concave part 8 and is harder than the other part 4a of the rubber plate 4 is provided at a location corresponding to the concave part of the surface 5, and is provided with a space-maintaining hard thick wall part 9 that is made harder than the other part 4a of the rubber plate 4. The spacing protrusions 12 provided on the filter surface 11 are received by the hard thick wall portion 9, and when the filter press is in the closed state, the spacing protrusions 12 on the filter plate 2 are normally received. Since the space-maintaining hard thick-walled part 9 of the compressed filter plate 1 is butted against the part 12, the uneven pressure applied to the filtering surface 5 or 11 is not received by the protrusion 12 and the hard thick-walled part 9. The thick part 9 is harder and thicker than the other part 4a of the rubber plate 4, and is partially fitted into the concave part 8 of the substrate 3, so even if it is pressed, it does not deform as a whole. The compressed filter plate 1 has excellent pressure resistance and can withstand long-term use without any risk of the rubber plate 4 tearing.
In addition, since the outer surface of the hard thick-walled part 9 for spacing is smoothly connected to the surface of the other part 4a of the rubber plate 4, the cake removal property after filtration is good, and furthermore, the hard thick-walled part 9 The rubber plate 4 has a simple structure and has the effect that the compressed filter plate 1 can be manufactured easily and at low cost.

[Brief explanation of drawings]

Fig. 1 is a schematic partial front view of a compressed filter plate and an ordinary filter plate showing an embodiment of this invention, and Fig. 2 is a partial front view of a compressed filter plate and an ordinary filter plate showing an embodiment of this invention.
An enlarged cross-sectional view taken along a line, with filter plates typically shown on both sides. FIG. 3 shows a conventional example, and is an enlarged sectional view of a filter plate corresponding to FIG. 2. 1... Press filter plate, 2... Ordinary filter plate, 3... Substrate, 4... Rubber plate, 5... Filtration surface, 6... Filtrate groove, 7... Swelling part, 8... Concave part, 9... Rigid thick wall part for spacing, 10... Filter plate main body, 11... Filtering surface, 12... Protrusion for spacing.

Claims (1)

[Scope of utility model registration request] It is equipped with a substrate 3, and a rubber plate 4 which is placed on both the front and rear surfaces of the substrate 3 and has a filtrate groove 6 on the filtration surface 5, and has bulges bulging on both the front and rear sides at required locations on the portion of the substrate 3 corresponding to the filtration surface. A portion 7 is provided, and this bulging portion 7
Concave portions 8, 8 are provided on both the front and rear surfaces, respectively,
A part of the filter surface 5 of each rubber plate 4 is fitted into the concave part 8 and the other part 4 of the rubber plate 4
A space-maintaining hard thick-walled part 9 made harder than a is provided so that the space-maintaining protrusion 12 provided on the filtering surface 11 of the adjacent ordinary filter plate 2 is received by the hard thick-walled part 9. The compressed filter plate of the filter press.