JPH0515484B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a filter for filtering fluid substances such as polymers and monomers.

Configuration of prior art and its problems FIG. 4 shows a conventional filter. This filter is for filtering fluid substances such as polymers and monomers, and is of a leaf disk type, and has a large number of leaf disks 1. The leaf disks 1 are disc-shaped and stacked one after another. In the case of this filter, as shown in FIG. 5, a hub 2 is fitted into the central opening of each leaf disk 1 and welded, and a hollow center pole 3 passes through the hub 2 of each leaf disk 1. There is. The leaf disks 1 are stacked along the center pole 3.

Furthermore, in the case of this filter, two punching plates 4 are used as the leaf disks 1. The punching plate 4 is a porous metal plate. A stainless wire mesh 5 is provided between each punching plate 4,
A nonwoven fabric 6 is stretched on both sides of the punching plate 4. Further, a plurality of through holes 7 and 8 are formed in the hub 2 and the center pole 3, and the through holes 7 and 8 communicate between each punching plate 4.

Therefore, when this filter is installed in a tank containing a fluid substance such as a polymer or a monomer, the fluid substance flows into each nonwoven fabric 6 in each leaf disk 1.
It passes through each punching plate 4 and is introduced between the punching plates 4. Thereafter, the fluid substance passes through the through hole 7 of the hub 2, through the through hole 8 of the center pole 3, is discharged into the center pole 3, and is taken out of the tank. Therefore, each nonwoven fabric 6 can filter the fluid substance.

However, this filter had problems associated with the structure of the leaf disk 1. The leaf disk 1 is made up of a porous punching plate 4, which is different from an ordinary metal plate.
As is well known, the porous punching plate 4 is quite expensive. Also, two punching plates 4 must be used for each leaf disk 1, and the required number is not small. Therefore, there was a problem that the overall manufacturing cost was high.

OBJECTIVES OF THE INVENTION Therefore, the present invention was made for the purpose of solving the above-mentioned conventional problems and providing a leaf disc type filter that does not require the use of a porous punching plate and has a low overall manufacturing cost. It is something.

Structure of the Invention According to the present invention, the leaf disk has a large number of elongated spacers, and the spacers are arranged at intervals in the circumferential direction of the leaf disk and extend radially. Therefore, a large number of grooves are formed between each spacer. Furthermore, each spacer curves in the circumferential direction toward the periphery of the leaf disk,
This makes the effective width of the groove uniform over substantially its entire length. In addition, the leaf disk has 2
It has two pieces of wire mesh and two pieces of non-woven fabric. and,
Each wire mesh is placed on either side of the spacer and secured to each spacer. Furthermore, each nonwoven fabric is stretched over each wire mesh, and each groove is covered with each nonwoven fabric and each wire mesh. The fluid substance passes through each nonwoven fabric and each wire gauze, is introduced into each groove, and is filtered by each nonwoven fabric.

Description of examples Examples of the present invention will be described below.

FIG. 1 shows an embodiment of the invention. This filter has a large number of leaf disks 1. The leaf disk 1 is disc-shaped. Then, a hub 2 is fitted into the central opening of each leaf disc 1 and welded, a hollow center pole 3 passes through the hub 2 of each leaf disc 1, and each leaf disc 1 is inserted along the center pole 3. The filters are stacked in the same way as the filters in FIG.

However, unlike the filter of FIG. 4, the leaf disc 1 of this filter is not constituted by a porous punched plate. The leaf disk 1 has a large number of spacers 9. The spacers 9 are made of elongated stainless steel plates, are arranged at intervals in the circumferential direction of the leaf disk 1, extend radially, and are welded to the hub 2. Therefore,
A large number of grooves 10 are formed between each spacer 9, and the grooves 10 are also formed at intervals in the circumferential direction of the leaf disk 1 and extend radially. At the periphery of the leaf disk 1, each spacer 9 is connected by a rib 11. Furthermore, as shown in FIG. 3, the spacer 9 is tapered, the groove 10 is also tapered, and the depth D thereof decreases toward the periphery of the leaf disk 1.

Furthermore, in the spacer 9 extending radially,
When spacers 9 of a constant width are arranged immediately, the effective width W of each groove 10 naturally increases gradually toward the periphery of the leaf disk 1, but in the case of this filter, as shown in FIG. Each spacer 9 is curved in the circumferential direction toward the periphery of the leaf disk 1, thereby making the effective width W of each groove 10 substantially uniform over its entire length. Therefore, the effective width W of the groove 10 does not increase near the central opening of the leaf disk 1 as well as near its periphery. It is also possible to maintain the effective width W of each groove 10 substantially constant over its entire length.

Further, the leaf disk 1 has two wire meshes 5 and two nonwoven fabrics 6. Each wire mesh 5 is arranged on both sides of the spacer 9, and is sintered and fixed to each spacer 9, the hub 2 of the leaf disk 1, and the rib 11 of the spacer 9. In this embodiment, the wire mesh 5 and the spacer 9 are sintered over their entire length. Further, each nonwoven fabric 6 is stretched over each wire mesh 5, and each groove 10 is covered with each nonwoven fabric 6 and each wire mesh 5. In this embodiment, the nonwoven fabric 6 and the wire mesh 5 are bonded together with an adhesive near the central opening of the leaf disk 1 and near its periphery. A plurality of through holes 7 and 8 are formed in the hub 2 and center pole 3 of the leaf disk 1, and the through holes 7 and 8 communicate with the grooves 10 of the spacer 9.

Therefore, when this filter is installed in a tank containing a fluid substance such as a polymer or a monomer, the fluid substance flows into each nonwoven fabric 6 in each leaf disk 1.
It passes through each wire mesh 5 and is introduced into the groove 10 of the spacer 9. The fluid substance then flows along each groove 10, passes through the through hole 7 of the hub 2, passes through the through hole 8 of the center pole 3, is discharged into the center pole 3, and is taken out to the outside of the tank. Therefore,
The nonwoven fabric 6 can filter fluid substances.

Therefore, in the case of this filter, the leaf disk 1 can be constructed by the spacer 9 made of an ordinary metal plate such as a stainless steel plate, and there is no need to use the conventional punching plate. Therefore, its manufacturing cost is low. Moreover, the effective width W of the groove 10 of the spacer 9 is made uniform over the entire length of the groove 10,
As described above, the effective width W of the groove 10 does not increase near the periphery of the leaf disk 1 as well as near the central opening thereof. Therefore, each wire mesh 5 can be sintered to each spacer 9 on both sides of the groove 10 having a small effective width W, and each nonwoven fabric 6 and each wire mesh 5 can be accurately supported, and the highly viscous fluid substance can be sintered into each spacer 9. When passing through the nonwoven fabric 6 and each wire mesh 5, even if each nonwoven fabric 6 and each wire mesh 5 receive pressure from the fluid substance, there is no risk that each nonwoven fabric 6 and each wire mesh 5 will collapse into the grooves 10 of the spacer 9. Therefore,
Even highly viscous fluid substances can be filtered without any problem.

Effects of the Invention As explained above, according to the present invention, the leaf disk 1 can be constructed by the spacer 9 made of an ordinary metal plate, and there is no need to use the conventional punching plate. Therefore, its manufacturing cost is low. Moreover, when a highly viscous fluid substance passes through each nonwoven fabric 6 and each wire mesh 5, even if each nonwoven fabric 6 and each wire mesh 5 receives pressure from the fluid substance, each nonwoven fabric 6 and each wire mesh 5 do not fit into the grooves 10 of the spacer 9. There is no risk of it falling inward. Therefore, even a highly viscous fluid substance can be filtered without any problem, and the intended purpose can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the invention, Fig. 2 is a perspective view showing an embodiment of the invention;
The figure is a plan view of the leaf disk shown in Fig. 1, Fig. 3 is a sectional view of the leaf disk shown in Fig. 2, Fig. 4 is a perspective view of a conventional filter, and Fig. 5 is a sectional view of the leaf disk shown in Fig. 4. It is. 1... leaf disk, 5... wire mesh, 6... non-woven fabric, 9... spacer, 10... groove.

Claims (1)

[Claims] 1. A filter for filtering fluid substances such as polymers and monomers, in which a large number of disk-shaped leaf disks are stacked one after another, and the leaf disk includes a large number of elongated spacers, two wire meshes, 2
The spacers are arranged at intervals in the circumferential direction of the leaf disk and extend radially, and a plurality of grooves are formed between the spacers, and The groove is curved in the circumferential direction toward the periphery, thereby making the effective width of the groove substantially uniform over its entire length, and each of the wire meshes is disposed on both sides of the spacer, and each of the wire meshes is arranged on both sides of the spacer, fixed to a spacer, each of the nonwoven fabrics is stretched on each of the wire meshes,
Each of the grooves is covered with each of the nonwoven fabrics and each of the wire meshes, and the fluid substance passes through each of the nonwoven fabrics and each of the wire meshes and is introduced into each of the grooves, and the fluid substance is introduced into each of the grooves by each of the nonwoven fabrics. A filter characterized in that a substance is filtered.