JPH0433923Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a pressing plate in a pressing type filter press having protrusions on the overaction surface.

BACKGROUND ART Conventionally, as a pressing plate in a pressing filter press, an overactive surface S of a pressing membrane M is used as a pressing plate as shown in FIG.
The protrusion P portion to be formed is raised into a thick chevron shape, and a small diameter convex portion R is provided on the back side of the protrusion P, and the convex portions are brought into contact with holes C made in the substrate B from both sides of the substrate. There is something that was fitted in this way.

Problem to be Solved by the Invention However, the protrusions of the pressing membrane of the pressing plate mentioned above gradually become fatigued and deformed due to over-squeezing operation, or the thickness dimension becomes uneven, and as a result, the surface pressure applied to the adjacent plate cannot be adequately You will not be able to receive it.

The purpose of the present invention is to eliminate the drawbacks of the conventional examples described above, and to provide a pressing plate for a pressing filter press that can sufficiently withstand the surface pressure applied to adjacent plates and does not cause tearing of the fabric.

Means for Solving the Problems In order to achieve the above object, in the pressing plate of the pressing type filter press of the present invention, protrusions are formed on the over-bed of the substrate, and the pressing membrane is provided with projections of the substrate on its over-action surface. Form a raised part higher than the height of the raised part, make a through hole penetrating from the top of the raised part to the back surface, fit the through hole of the pressed film into the protrusion of the substrate, and press the pressed film attached to the substrate. A protrusion with a concave top is formed on the overaction surface of the membrane.

Effects: Over-compression is performed by arranging a large number of compression plates configured as described above as usual, but the
The protrusions on the over-action surface are overlapped and pressure-welded with the protrusions of the adjacent plate or with the adjacent plate, allowing the plate to deflect and deform within its allowable range, and mutually supporting the plates to safely perform over-squeezing. Close. It also prevents the fabric from tearing.

Examples Examples will be described with reference to the drawings. 1st
The figure is a front view of the pressing plate 1 in the pressing filter press according to the present invention. There is a hole 6. As shown in FIG.
The 3 are connected. 7 is the overboard of the board 2;
8 indicates cloth. The protrusion 5 is shown enlarged in FIG. In FIG. 3, reference numeral 10 is a screw for forming a protrusion 9 on the substrate, which is composed of a large-diameter head 11 and a small-diameter threaded portion 12. The small-diameter screw portion 12 passes through a hole 13 made in the substrate, and its tip protrudes to the opposite side of the hole 13, and the large-diameter head 11 protrudes above the hole 13. A screw ring 14 is attached to the tip of the small diameter screw portion 12.
Put on. The screw ring 14 has a large diameter head 1 of the screw 10.
1 protrudes above the substrate 2. Also 15
is a raised portion formed on the overaction surface 4 of the squeeze membrane 3. The raised portion 15 protrudes from the overaction surface 4 to have a substantially trapezoidal cross section, and has a through hole 17 extending from its top portion 16 to the back surface. Each compressed membrane 3 on the substrate 2
are attached to the substrate 2 by fitting and aligning the through holes 17 with the large diameter head 11 and screw ring 14 on the substrate 2 and the pass-through 7, respectively. The large diameter head 11 and the screw ring 14 are located in the through hole 17 at a position recessed from the top 16 of the raised portion 15 by a recess dimension t. In FIG. 3, the projections 19 of the ordinary plate 18 adjacent to the pressing plate 1 and the projections 5 of the pressing plate 1
are in pressure contact with each other through the cloth 8, and the top portion 16 of the raised portion 15 is compressed to approximately the height of the screw ring 14, thereby reducing the recess dimension t. Similarly,
Protrusion 1 of the ordinary plate 18 located on the large diameter head 10 side
9 and the protrusion 5 of the pressing plate 1 are respectively cloth 8
The top portion 16 of the raised portion 15 is compressed to approximately the height of the large-diameter head portion 11, thereby reducing the recess size t. FIG. 4 shows a plane of the raised portion 15 of the compressed membrane 3. As shown in FIG. Overaction surface 4 of the squeezed membrane 3
The top surface is finished with many uneven lines.

Although the pressing plate 1 is assembled as shown in FIGS. 1 to 4, the projection 5 portion shown in FIG. 3 may be constructed as shown in FIGS. 5 to 6. That is, in FIG. 5, 21 is a screw for forming the protrusion 20 on the substrate 2, which is composed of a large-diameter head 22 and a small-diameter threaded portion 23. The small-diameter screw portion 23 passes through a hole 13 made in the substrate 2, and its tip protrudes toward the opposite side of the hole 13, and the large-diameter head portion 22 protrudes above the hole 13. A screw ring 2 is attached to the tip of the small diameter screw portion 23.
Insert 4. The screw ring 24 protrudes above the base plate 2 at a height equal to the height of the large-diameter head 22 of the screw 21. Step portions 25 and 26 are provided on the respective peripheral edges of the large-diameter head 22 and the screw ring 24, respectively. A groove 27 is carved in the middle of the upper surface of the stepped portions 25 and 26, and the groove 27
Insert the packing 28 inside. 29 is a raised portion formed on the overaction surface 4 of the compressed membrane 3. Each of the raised parts 29 of each compressed membrane 3 on both sides of the substrate 2 is raised from the overacting surface 4 so as to have a substantially conical cross section, and has a through hole 31 penetrating from each top part 30 to the back surface. The outer periphery of the through hole 31 is connected to the large diameter head 22 of the screw 21 and the stepped portions 25 and 26 attached to the screw ring 24.
It extends inward to fit into each.
Further, the back side of the extension part is provided with a groove 32 into which the upper half of the packing 28 is fitted. The raised portion 29
The top portion 30, that is, the outer peripheral edge surface of the through hole 31 is made wider than the plane of the top peripheral edge of the raised portion 15 shown in FIG. It is sufficient to set the Although the packing 28 is used as a pressure mechanism, it is not necessarily required. In the above, each compressed membrane 3 on the substrate 2 is attached to the substrate 2 by fitting the through hole 31 into the large diameter head 22 and screw ring 24 on the overbed 7 on both sides of the substrate 2 and aligning them. There is. The large diameter head 22 and screw ring 24
is located in the through hole 31 at a position recessed from the top 30 of the raised portion 29 by a recess dimension t. In Figure 5,
A protrusion 19 of the ordinary plate 18 adjacent to the pressing plate 1;
The projections 5 of the pressing plate 1 are in pressure contact with each other through the cloth 8, and the periphery of the top 30 of the raised portion 29 is compressed to approximately the height of the screw ring 24, thereby reducing the recess size t. Similarly, the protrusions 19 of the ordinary plate 18 located on the side of the large diameter head 22 and the protrusions 5 of the pressing plate 1 are in pressure contact with each other through the cloth 8, and the top 30 of the raised portion 29 has a substantially large diameter. compressed to the height of the head 22,
The above-mentioned recess size t is reduced. FIG. 6 shows the plane of the raised portion 29 of the compressed membrane 3. As shown in FIG. The overaction surface 4 of the compressed membrane 3 is finished with a large number of uneven stripes to form an uneven striped surface. Further, although not shown in the drawings, the height of the protrusion may be increased to such a height that it comes into pressure contact with the overactive surface of the adjacent plate.

A large number of the pressing plates 1 configured as described above and the adjacent ordinary plates 18 or pressing plates 1 are arranged alternately and tightened by a tightening device as usual, and then a pump is applied from a supply source of the stock solution (not shown). The stock solution is supplied through the stock solution hole 6 into the chamber 34 formed between each plate and filtered. The liquid that has passed through the cloth 8 flows through the squeezing membrane 3 and the overaction surfaces 4 of the plate 18, and is collected in the communication passage 36 through the collection holes 35 and discharged to the outside of the machine (FIG. 1). The protrusions 5 of the pressing plate 1 on the overaction surface 4 and the protrusions 19 of the adjacent normal plate 18 or the protrusions 5 of the pressing plate 1 are in pressure contact as shown in FIG. A cake layer is formed within the chamber 34 except for five portions. Next, compressed fluid is supplied from a compressed fluid supply source (not shown) through the passage 37 into the pressure chamber 38 formed between the overbed 7 of the compressed plate 1 and the compressed membrane 3 to remove the cake layer in the chamber 34. Squeeze. Reference numeral 39 is a communication passage that connects the compressed fluid passage 37 and the pressure chamber 38. The compressed cake layer is discharged outside the machine by opening the space between each plate. During the above-mentioned over-squeezing, the tops 1 of the protrusions 15, 29 of the squeezing membrane 3
6 and 30 are each compressed as described above. Therefore, the recess size t at the top of the raised portion is compressed by a predetermined amount, and the plates mutually support each other via the projections. Therefore, there is no chance of the board cracking or the fabric of the prongs being torn.

The protrusion mentioned above is not only formed by integrally molding the raised part of the compression membrane with the membrane part, but also by covering the raised part with another member, etc., and the size of the recess at the top of the protrusion is It can also be made to increase or decrease.

In the example shown in FIGS.
It is marked with 0. This groove 40 is the through hole 4
1 to the outer wall of the raised portion 42 and its top 4
3 plane is divided into several parts. In this example, water drainage on the protrusion is improved, and the raised portion is appropriately elastically deformed. In the figure, the top 43 plane is hexagonal, and the through hole 41
The inner screw 44 is also hexagonal and has a small diameter screw portion 4.
5 is fitted into the hole 13 of the substrate 2 and fixed.
Further, a screw ring 47 is fitted and fixed on the opposite side of the screw 44 from the large diameter head 46. 48 and 49 are thin plates inserted between the base plate 2 and the large-diameter head 46 or between the screw ring 47, respectively, so that the height of the protrusion 50 on the base plate 2 can be adjusted.

[Brief explanation of drawings]

Figure 1 is a front view showing one embodiment of the present invention;
The figure is a sectional view taken along the line X-X in Figure 1, Figure 3 is an enlarged sectional view of the protrusion part in Figure 2, and Figure 4 is a plan view of Figure 3.
Figure 5 is an enlarged sectional view of another example equivalent to Figure 3;
The figure is a plan view of Fig. 5, and Fig. 7 is a plan view of another example.
An enlarged sectional view corresponding to the figure, Figure 8 is a plan view of Figure 7,
FIG. 9 is an enlarged sectional view corresponding to FIG. 3 showing a conventional example. 1... Pressing plate, 9, 20, 50... Protrusion, 1
5, 29, 42... Protrusion, 2... Substrate, 10,
21, 44... Screw, 16, 30, 43... Top, 3... Squeezed membrane, 11, 22, 46... Large diameter head, 17, 31, 41... Through hole, 4... Overacting surface , 12, 23, 45...Small diameter threaded portion, 2
5, 26...Step part, 5...Protrusion, 13...Hole, 4
8,49...thin plate, 8...cloth, 14,24,4
7...Screw ring.

Claims (1)

[Claims for Utility Model Registration] A pressing plate of a pressing type filter press in which a pressing film is attached to a substrate, and protrusions facing an adjacent plate are formed on the pressing surface of the pressing film. While protrusions are provided on the floor, a protrusion with a height exceeding the height of the protrusion is formed on the overaction surface of the pressing membrane, and a through hole is formed from the top of the protrusion to the back surface of the pressing membrane. 1. A pressing plate for a pressing type filter press, characterized in that the through holes of the raised portions are fitted into the protrusions of the substrate, and protrusions having concave apexes are formed on the over-action surface of the pressing membrane adhered to the substrate.