JPH02119931A - Spherical packing material - Google Patents

Abstract

PURPOSE:To mass-produce the spherical packing material having strength in the shortest process at a low cost by connecting a blade member to the periphery of a center ring member, connecting the group of the blade members by an outer ring, and connecting the upper and lower parts with the center ring at the center. CONSTITUTION:The center ring members 1 and 2 are provided at the upper and lower ends of an axis X, and integrally connected to the upper and lower edges of the blade members 3 around the axis X. The outer ring member 4 is arranged at the middle between both electrodes, and integrally connected to the outer edge of the blade member 3. The blade member 3 consists of the upper and lower half blade members 3A and 3B. A link member 5 extending from the outer ring member 4 to the center is formed, and the upper and lower half members 3A and 3B are integrally connected to both sides. When the packing material is formed in this way, the material having strength can be mass-produced in the shortest process at a low cost by only one-time opening of a metallic mold.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is applicable to gas absorption, distillation,
The present invention relates to a packing material used to form a fixed bed for operations such as stripping or biochemical purification of organic wastewater such as wastewater in an aerobic or anaerobic atmosphere.

(Prior art) This type of filler is generally made of plastic, metal, or ceramic basket-shaped materials, ring-shaped materials, flower-shaped materials, and other rust-proof and inexpensive materials with a channel network structure. filler is used.

In order to adapt the filler to the various characteristics required of the filler, it is important to devise its shape. Examples of prior art fillers with a spherical or close-to-spherical outer shape include
No. 21520, Utility Model Publication No. 63-21316, JP-A-55
-114327, JP-A No. 62-61618, etc.

(Problems to be Solved by the Invention) This type of filler requires the following conditions for each filler.

(a) The filling material has an outer structure that does not interlock with each other during filling.

(c) The inner and outer structure allows for uniform and efficient contact between the surface of the filler and the passing fluid.

(C) Avoid creating dead corners or dead spaces where solid precipitates can accumulate.

(b) In the filling material to which microbial sludge adheres and grows, there should be no narrow gaps that would cause clogging of fluid passages as the sludge grows.

(e) It has a structure that can be manufactured by opening the mold once.

(f) Have sufficient mechanical strength to withstand stacking.

(The shape must be such that as much area as possible can be obtained from the unit amount of barrel material.

(b) Shape that does not cause uneven fluid flow even if filled irregularly.

As a result of investigation, it has been found that the spherical filler of the prior art does not have a structural shape that can satisfy all of these requirements at the same time.

(Means for Solving the Problems) The spherical filler of the present invention has a new structure that can produce results satisfying all of the conditions required for this type of filler.

The spherical filler of the present invention has a structure in which an annular center ring member having a diameter difference between the upper and lower ends is arranged at both extreme positions on the central axis, an annular outer ring member is arranged at an intermediate position between the two poles,
A plurality of intermediate blades each having an arc-shaped outer circumferential blade part and an axial chord-shaped inner blade part row formed in a radial semicircular plate area in which these blades are arranged approximately equiangularly symmetrically around a central axis. The wing member is formed into a spherical or nearly spherical outer shape, and the wing member is connected from both sides to a relay member extending from the outer member toward the center, and the wing member is made of upper and lower half-wing members, and is connected from both sides to a relay member extending from the outer member toward the center. It is characterized in that it is formed by being connected with steps, and thus the circumferential wing plates in the plane parallel to the axial direction are connected between the outer circumferential wing portions of the adjacent wing plates whose spacing is narrower due to the alternating steps. shall be.

(Function) The spherical filler of the present invention has an annular center ring member above and below the center axis, around which a plurality of wing members are focused and connected, and therefore there is a hollow space between the two center ring members. Fluid passes freely in and out of the surrounding airfoil spacing. That is, unlike the prior art Japanese Patent Application Laid-Open No. 62-61618, this structure does not have a central axis. Therefore, the spherical shape of the filler tends to cause it to fill in irregular orientations, but this does not result in non-uniform flow or dispersion of the fluid.

Furthermore, in the spherical filler of the present invention, the group of centrally symmetrical radially arranged wing members is connected to the outer ring member at the outside of the center, while the upper and lower parts are connected at the center by the center ring member. The upper and lower center ring members also significantly increase the mechanical strength of the filling material.

Furthermore, since the center of the spherical filler is hollow and the center ring members at both ends have different diameters, when the spherical filler is manufactured by injection molding of plastic material, it is possible to open the upper and lower molds in the axial direction. Each part of the wing member and the surface of the small blade plate are all parallel to the axial direction, and the step in the middle is open in the direction of opening the frame, so it does not interfere with opening the frame, and therefore the mold can be opened only once. It is possible to form it with a frame.

In addition, the small blades on the spherical surface prevent the spherical fillers from crowding together between the wing members, so no meshing occurs, and the flow condition allows the filler surface to uniformly and efficiently contact the fluid. can be realized.

(Example) Hereinafter, the spherical filler of the present invention will be specifically explained based on Examples with reference to FIGS. 1 to 5. Fig. 1 is a side view of a spherical filler according to an embodiment of the present invention with its axis oriented vertically;
The figure is a plan view of the same, Figure 3 is a cross-sectional plan view taken along line II A cross-sectional view of the line is shown.

This spherical filler has a vertical central axis (
It is formed around X) with reference to it. Axis line (X)
An annular center ring member (1) and (
2) are respectively disposed and are integrally connected to the upper and lower inner edges of a plurality of wing members (3), which will be described later, arranged around the axis (X).

Therefore, there is a space between the upper and lower center ring members (1) and (2).

The inner diameter of the upper center ring member (1) is slightly larger and different from the outer diameter of the lower center ring member (2), so that the forming mold can be opened.

An annular outer ring member (4) is disposed at an intermediate position between the two poles at a position corresponding to the equator, and is integrally connected to the outer edge of the wing member (3).

The wing member (3) has the general shape of a semi-disk and is arranged approximately radially symmetrically about the central axis and therefore occupies a radial position. Each wing member (3) is in the shape of a semicircular plate with lightening, and is integrated with an arc-shaped outer circumferential wing part (3a) and has an arc-shaped inner wing part (3b) (3c) extending inwardly in a direction parallel to the axis.
(3d) are arranged in a row. In this way, the outer edges of the outer circumferential wing portions (3a) of the plurality of wing members (3) collectively exhibit a spherical shape or an outer shape close to the spherical shape. In this example, the number of wing members is 12, so the angle between adjacent wing members is 30°.

The wing member (3) also consists of upper and lower half-wing members (3A) and (3B), and a relay member (5) extending toward the center is formed from the outer ring member (4). The upper and lower half-wing members (3A) and (3B) are integrally connected on both sides so that the half-wing members are interconnected while maintaining a step difference.

The steps are formed alternately in opposite directions for each circumferential row of blade members.

In this way, the small blade plate (6) parallel to the axial direction is connected between the outer circumferential blade portions (3a) over the half-wing member where the interval between adjacent blade members is narrower due to the alternating steps. The winglet (6) thus occupies a spherical latitudinal position. In this way, the step causes expansion in the mold opening direction, and the small blade plate (6
) is a plane parallel to the axial direction like the wing member (3), so it does not interfere with mold opening.

Examples of specifications of the spherical filler according to the embodiments of the present invention are as follows.

Dimensions and shape: Ball diameter 130mm.

Outer ring member diameter: 140 Material: Polypropylene (specific gravity: 0.92) Weight
Amount = 61.8 g per piece Weight per fixed bed: 36.53 kg Specific surface area:
58 rtf Same number = 591 pieces (Effects of the invention) As described above, according to the present invention, a filler that satisfies all the requirements described in the previous section can be formed in the shortest process by opening the mold once. Therefore, tens of thousands of fillers packed into one fixed bed can be mass-produced at low cost.

[Brief explanation of drawings]

FIG. 1 is a side view of a spherical filler according to an embodiment of the present invention with its axis oriented vertically, FIG. 2 is a plan view thereof, and FIG.
FIG. 4 is a cross-sectional view taken along line IV--IV in FIG. 2, and FIG. 5 is a cross-sectional view taken along line v--■ in FIG. 4. (1) (2)... Center ring member, (3)... Wing member, (3A) (3B)... Half wing member, (3a)...
・Arc-shaped outer peripheral wing portion, (3b) (3c) (3d)...
Arc-shaped inner wing portion, (4)...outer ring member, (5)...
... Relay member, (6) ... Small wing plate. Diagram Nakagami ° Yumesaki Kasame Ice Made

Claims (1)

[Claims] An annular center ring member having a diameter difference between the top and bottom is placed at both extreme positions on the central axis, and an annular outer ring member is placed at an intermediate position between the two poles, and these are arranged approximately equiangularly symmetrically around the central axis. An arcuate outer circumferential wing portion and a chord-shaped inner wing row in the axial direction are combined together with a plurality of intermediate wing members to form a spherical or nearly spherical outer shape on the arranged semicircular plate surface area in the radial direction. At the same time, the wing member is formed of upper and lower half-wing members, and is connected from both sides to a relay member extending from the outer ring member toward the center so as to have alternating steps in the circumferential direction. A spherical filler characterized by connecting small circumferential blades in a plane parallel to the axial direction between the outer circumferential wing parts of adjacent blades with a narrower interval due to alternating steps.