JPS62102807A - Filter apparatus - Google Patents

Abstract

PURPOSE:To obtain the titled apparatus which is sufficiently strongly-built and has durability by fitting a suitable spacer between both ends of a rodlike material and arranging the rodlike material in an equiinterval so as to constitute a cylindrical surface and fixing it. CONSTITUTION:The rods R are arranged parallel to a center line in the positions having radius (r) apart from the center line in the equiintervals (d) wherein e.g. the spacer rings having 1/2d thickness are fitted to both ends of the rods R and closely stuck and both ends are fixed by a fixture to obtain a rod filter 1. A feed screw 2 is inserted into the rod filter 1 and a motor shaft 11 of a geared motor 7 is fixed to the feed screw 2 and supported by a bearing 6. A material to be treated is introduced through a hopper 5 and sent by the feed screw 2 and pushed on the rod filter 1. A filtrate is extruded to a clearance 9 through the clearances of the rods R and discharged through a drainage port 10.

Description

[Detailed description of the invention] [Field of industrial application] The present invention is used in the field of manufacturing foods, medicines, chemical products, etc., or in the field of sludge treatment, etc., to separate a material to be treated into a filtrate and a cake. Regarding a filtration device.

[Conventional technology]

Most conventional filtration devices use meshes woven from metal or non-metallic wires or fibers, and the disadvantage is that the smaller the mesh, the smaller the thickness of the wires, which weakens the mechanical strength. there were.

[Problem that the invention seeks to solve]

The filtration device of the present invention is characterized by arranging rod-shaped bodies around one central axis so as to form a cylindrical surface equidistant from the center line and parallel to each other to form a cylindrical surface. The filtrate is pushed out through the gap between the rods by applying pressure, and by selecting rods with an appropriate thickness depending on the internal pressure, a sufficiently sturdy filtration surface can be constructed, and multiple expansion restriction links are provided on the outside. If such a structure is provided, deformation can be prevented even if a thinner rod-shaped body is used.

[For production]

Place a spacer of an appropriate width between both ends of the rod,
When the rods are arranged and fixed at equal intervals to form a cylindrical surface, a long and narrow gap is created between the rods along the entire length.

At this time, the width of the gap can be arbitrarily selected from a minimum of zero.

When a workpiece is placed inside the cylindrical surface of the rod and pressurized, the rod will bend outward and the width of the gap will become larger. By fitting a ring to limit expansion or a spring with a coarse pitch, the gap can be maintained at the desired size even when large internal pressure is applied.

Therefore, when the material to be treated is introduced into the cylinder using a feed pump, a feed screw, or by using centrifugal force, the filtrate is discharged from the gap between the rods.

〔Effect of the invention〕

By appropriately selecting the thickness, cross-sectional shape, length, diameter of the cylindrical surface, etc. of the rod-shaped body, a sufficiently sturdy and durable filtration device can be obtained.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on concave surfaces.

As shown in Figure 2, rods (R) are arranged at a radius (r) from the center line (X-X'), parallel to the center line (X-X''), at equal intervals (d), and both ends are fixed with fixtures (P+) and (h).To maintain equal spacing, for example, fit spacer rings with a thickness of 1/2 d to both ends of the rod (R) as shown in Figure 5. and arrange them.

In the rod filter (1) made in this way, when the material to be treated is fed under pressure inside, the rod (R) moves from the dotted line position to the solid line position (S) as shown in Fig. 9. is displaced by the amount of .

As shown in Fig. 4, when the rod (P+) is displaced from the center diameter (rl) to (r2), the distance between the rods increases from (a+) to (d2), so a restriction ring is formed as shown in Fig. 9. (
By providing E) at one to several locations, deformation can be prevented within a practical range. 3rd instead of restriction ring (E)
As shown in the figure, fit the limiting coil (
F) may also be used.

Figure 1 shows the feeding screw (2) connected to the rod filter (1).
) and attach the motor shaft (1) of the geared motor (7).
1) is fixed to the feeding screw (2) and supported by a bearing (6).

The material to be processed enters through the hopper (5) and is passed through the feeding screw (
2), but the space in the threaded part of the feeding screw (2) gradually gets pinched as shown in the figure, the material to be processed is pressed against the rod filter (1), and the filtrate flows through the gap between the rods (R). (9) and is discharged from the drain port (10). When the cake discharge restriction device (12) installed at the end of the outer cylinder (4) suppresses the discharge of cake, a large internal pressure is generated between the feeding screw (2) and the rod filter (1), and the material to be treated is is sufficiently narrowed down. Push it (3)
Seal and fix the rod filter (1). The inner diameter of the restriction ring (E) or restriction coil (F) is
It may be determined by considering the gap (d) between R).

Figure 6 shows both ends of the rod filter (1) attached to bearings (20
), (26), pulley (22), belt (
21) Motor (2) via motor pulley (23)
4) is shown, and an example is shown in which the object to be processed is sent from the (A) side and the cake is discharged from the (B) side.

In this case, a screw or other discharge device for discharging the cake may be incorporated.

FIG. 7 shows an embodiment used in a centrifuge.

The rod filter (1) is attached to the flange (26) connected to the rotating shaft (25), and the tip is attached to the fixing device (P
), and the base may be fixed by being buried in the flange (26), for example. The details of this part are, for example, as shown in the side cross-sectional view and front view in FIG. Rod (R,).

The ends of (R2) should be cut thin, inserted and fixed, and supported by the (A) part of the flange in response to centrifugal force.

The method of the invention results in a very robust and simple filtration device.

[Brief explanation of drawings]

The drawings show an embodiment of the filtration device according to the present invention, and an explanatory drawing. FIG. 1 is an example of the application of the device, FIG. 2 is an explanatory view of the side and cross section of a rod filter composed of rods, and FIG. and an explanatory diagram of the limiting coil, Fig. 4 is an explanatory diagram of the displacement of the rod, Fig. 5 is an example of the structure of the end of the rod, Fig. 6 is an application example of this device, and Fig. 7 is an application to a centrifuge. FIG. 8 is a partial explanatory view of FIG. 7 and is a side cross-sectional view and a front view, and FIG. 9 is an explanatory view of the rod. (1)・・・Rod filter, (R)・Dan・
rod.

Claims (11)

[Claims] (1) A plurality of rod-shaped bodies are held in a cylindrical shape surrounding the central axis, approximately parallel to the central axis, at approximately equal distances, and at approximately equal intervals, and these rod-shaped bodies are A filtration device characterized in that a cylindrical surface is used as a filtration surface, and a material to be processed is pressurized on this filtration surface to discharge a filtrate from a gap between feed rods. (2) The filtration device according to claim (1), further comprising a restrictor for restricting outward expansion of the rod-like body on the outer periphery of the cylindrical surface of the rod-like body. (3) The cylindrical surface constituted by the rod-shaped body is rotated about its central axis, and the material to be processed is fed into the cylindrical surface and pressed against the filtering surface by centrifugal force. ) The filtration device described in item 2. (4) The filtration device according to claim 1, wherein the material to be processed is pressed against the filtration surface by a feeding screw fitted into the cylindrical surface of the rod-shaped body to be filtered. (5) A feeding pump pressurizes and presses the object to be treated inside the cylindrical surface constituted by the rod-shaped body.
The filtration device described in section. (6) The filtration device according to claim (1), wherein a device for restricting discharge of the cake separated from the object is provided at one end of the cylindrical surface of the rod-shaped body. (7) The filtration device according to claim 1, wherein the rod-shaped bodies are stacked in a plurality of layers. (8) The filtration device according to claim (1), wherein the rod-shaped body is formed by winding a thinner wire around the rod-shaped body. (9) The filtration device according to claim (1), wherein the rod-shaped body is formed into a plurality of layers and has a cylindrical shape. (10) The filtration device according to claim 1, further comprising a net-like filter cloth on the outer periphery of the filtration surface constituted by the rod-shaped body. (11) Claim No. 1, further comprising a restrictor for restricting deformation of the rod-shaped body, provided on the outer periphery of the filtering surface constituted by the rod-shaped body.
) The filtration device described in item 2.