JPH0137683Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pressing filter plate for a filter press equipped with a diaphragm for pressing a cake.

(Prior art) The above-mentioned filter press filter plate usually has a core plate with a thick wall on the periphery and diaphragms on both sides. The diaphragm was easily damaged because it was directly attached to the thick part of the plate. In addition, in order to eliminate such drawbacks, as shown in Japanese Utility Model Publication No. 55-52890, a lip that engages with the outer circumferential surface of the core plate is formed on the peripheral edge of the diaphragm, and the lip is connected to the outer circumferential surface of the core plate. A type of diaphragm that is fixed by an outer frame that is screwed onto the filter press has also been developed, but the structure is complicated, and in order to replace the diaphragm, the entire press filter plate must be removed from the filter press and the outer frame must be disassembled. However, there was a drawback that the diaphragm could not be easily attached or detached.

(Purpose of the invention) The present invention was completed with the aim of solving these conventional drawbacks, and creating a compressed filter plate for a filter press that has a simple structure, allows easy attachment and detachment of the diaphragm, and is free from the risk of damaging the diaphragm. It is something that

(Structure of the invention) The present invention has grooves formed on both sides of the thick part formed on the periphery of the core plate, and a series of protrusions protruding from the outer periphery. The diaphragm is covered with a diaphragm having a protrusion that fits into the groove and a lip bent at right angles that engages the outer peripheral surface, and the upper surface of the lip of the diaphragm is highly sloped on the inside of the protrusion. This is characterized in that the mounting member is attached to the distal end from both sides and is fixed so that it cannot move outward by having an inclined inner circumferential surface of the mounting member.Hereinafter, the illustrated embodiment will be described in detail.

In FIG. 1, reference numeral 1 denotes a core plate made of synthetic resin, the periphery of which is formed into a thick part 2, and in the center of both sides of the thick part 2 there is a series of holes extending around the entire circumference of the core plate 1. A groove 3 is provided. Further, a series of protrusions 5 having a thickness of about 1/2 of the thick part 2 are provided at the center of the outer circumferential surface 4 of the thick part 2, and protrude outward at appropriate intervals. A bolt insertion hole 6 is provided transparently. Reference numeral 7 denotes a diaphragm mounted on both sides of the core plate 1, and its peripheral edge has a series of protrusions 8 that fit into the grooves 3 of the core plate 1, and an outer circumferential surface 4 of the core plate 1. The lip 9 is bent at a right angle and engages with the lip 9. The upper surface of the lip 9 is formed into a slope that is low on the outside and high on the inside. These diaphragms 7 have protrusions 8 tightly fitted into the grooves 3 of the core plate 1,
The lip 9 is mounted on the core plate 1 in a state in which it is engaged with the outer circumferential surface 4, and is fixed to the core plate 1 by a mounting member 10. The mounting member 10 is screwed onto both sides of the protrusion 5 of the core plate 1 with bolts 11, etc., and the inner circumferential lower surface formed on an inclined surface corresponding to the circumferential surface of the lip 9 connects the outer circumferential upper surface of the lip 9 of the diaphragm 7. is fixed to suppress the outward movement of the lip 9 and prevent the diaphragm 7 from coming off the core plate 3. Note that the mounting member 10 may be divided into appropriate lengths or may be integrated as a whole.

All of the devices configured in this way are used by being attached to a filter press in the same way as conventional compressor filter plates, but the diaphragm 7 is a recess provided in the thick wall portion 2 on the periphery of the core plate 1. The protrusion 8 in the groove 3
At the same time, the lip 9 bent at right angles is engaged with the outer peripheral surface 4 of the core plate 1, and the thin protrusion 5 provided in a series in the center of the outer peripheral surface 4 of the core plate 1 is inserted from both sides. Since the lip 9 is fixed so that it cannot be moved outward by the attached mounting member 10 having an inclined inner circumferential surface, compressed air or the like is not allowed to flow between the core plate 1 and the diaphragm 7 during cake compression. Even if the diaphragm 7 expands outward after being introduced, the lip 9 of the diaphragm 7 will not come off the core plate 1, and the diaphragm 7 will be fixed to the core plate 1 without being strongly pressed by the mounting member 10. so there is no damage to it. Also,
The compression filter plate of a filter press is subjected to a large clamping force from a hydraulic cylinder or the like during filtration, but since the mounting member 10 is directly attached to the protrusion 5 of the core plate 1 without intervening the diaphragm 7, this clamping force is reduced. This prevents damage to the diaphragm due to excessive force being applied to the diaphragm. Furthermore, when it becomes necessary to replace the diaphragm, the diaphragm 7 can be easily removed by removing the mounting members 10 that are attached to the protrusions 5 of the core plate 1 from both sides by means such as screwing. The diaphragm can be easily replaced because it can be carried out with the filter pressing plate still attached to the filter press.

(Effects of the invention) As is clear from the above explanation, the present invention has a simple structure, allows easy attachment and detachment of the diaphragm, and is free from the risk of damaging the diaphragm, and is a device that can replace conventional filters. It has extremely great practical value as it eliminates the drawbacks of compressed filter plates for presses.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing the main parts of a first embodiment of the present invention. 1: core plate, 2: thick part, 3: concave groove, 4: outer peripheral surface, 5: protrusion, 7: diaphragm, 8: protrusion,
9: Lip, 10: Mounting member.

Claims (1)

[Scope of utility model registration request] A series of grooves 3 are provided on both sides of a thick portion 2 formed on the periphery of the core plate 1, and a series of protrusions 5 are provided protrudingly on the outer peripheral surface 4. The diaphragms 7, 7 are coated with a protrusion 8 that fits into the groove 3 and a lip 9 bent at right angles that engages the outer peripheral surface 4, and the inside of the lip 9 of the diaphragm 7 is highly sloped. A compressed filter plate for a filter press, characterized in that the upper surface of the projection 5 is fixed to the tip of the projection 5 with the inclined inner circumferential surface of a mounting member 10 attached from both sides so as not to move outward.