JPH10296285A - Packing material for waste water treating tank and method and device for manufacturing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance shape retaining properties and eliminate the need for labor in a transportation work or loading work by parallelly arranging a plurality of cylindrical synthetic resin net members and joining the adjoining members to form them into a block shape. SOLUTION: In the packing materials 1a for a waste water treating tank, a plurality (4×2) of cylindrical net members 10a each having an octagonal cross section and made of synthetic resin are arranged parallelly and the adjoining members are formed into a block shape by thermally bonding them to each other. Thus the packing materials 1a having high shape retaining properties and of large size can be manufactured. And hence, the transportation and loading work of the materials 1a can be efficiently performed. And by properly selecting the sectional size, length, number of the members 10a, the size of the materials 1a can be freely set so as to be applied to waste water treating tanks of various shapes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filling material for a sewage treatment tank installed in a sewage treatment tank for biologically treating sewage such as sewage or industrial wastewater with aerobic or anaerobic fungi, and a method and method for producing the same. It concerns the device.

[0002]

2. Description of the Related Art In a sewage treatment tank for biologically treating sewage such as sewage and industrial wastewater with aerobic bacteria or anaerobic bacteria, the sewage treatment tank is filled with various fillers to treat the sewage in the sewage treatment tank. This prevents the useful fungi from flowing out together with the effluent sent to the next step. This filler also increases the opportunity for fungi to come into contact with sewage and activates biological treatment of sewage,
It also had the effect of promoting fungal growth.

[0003] Conventionally, as a filler for a sewage treatment tank, a cylindrical or spherical small block-shaped filler or a planar mesh is laminated and partially heat-sealed to form a substantially honeycomb. For example, block-shaped ones which are kept in a shape are used (see, for example, JP-A-56-161898 and JP-A-58-70887).

[0004] However, among them, the cylindrical or spherical small block-shaped filler has an advantage that it can be applied to sewage treatment tanks of various shapes as it is, but particularly when it is used for large sewage treatment tanks. In addition, since a large amount of filler must be filled, the cost of the filler itself is high, and there is a problem that the work of filling the filler and the maintenance of the sewage treatment tank are troublesome. On the other hand, in the case of a block-shaped filler obtained by laminating a planar net, there is a problem in self-retaining property at the time of transportation or filling work.
In particular, when used in a large sewage treatment tank, it is necessary to divide the filler into a number of blocks to form,
There has been a problem that it takes time to transport and fill the filler.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in consideration of the above-mentioned problems of the conventional filler for sewage treatment tanks, and has a high self-retaining property and does not require any trouble in transportation and filling operations. A first object is to provide a filler.

It is a second object of the present invention to provide a manufacturing method and a manufacturing apparatus for easily manufacturing the sewage treatment tank filler having high self-retaining property.

[0007]

In order to achieve the first object, a filler for a sewage treatment tank according to the present invention comprises a plurality of cylindrical synthetic resin net members arranged in parallel, and adjacent net members are connected to each other. Are joined to form a block.

This filler for sewage treatment tanks has a high self-retaining property and a large-sized filler because cylindrical synthetic resin net members are arranged in parallel and adjacent net members are joined to each other. Can be manufactured, and the work efficiency of the transporting operation and the filling operation of the filler can be improved. Further, the size of the filler for the sewage treatment tank can be arbitrarily set by appropriately selecting the cross-sectional dimensions, length, and the number of parallel lines of the cylindrical synthetic resin net member to be used, It can be easily adapted to various shapes of sewage treatment tanks.

In this case, as the cylindrical synthetic resin net member, a member having a polygonal cross section such as hexagon or octagon or a member having a circular cross section can be used. Among them, the one using a synthetic resin net member having a polygonal cross section can easily join adjacent net members, and can improve the molding accuracy of the sewage treatment tank filler. it can. In addition, a synthetic resin net member having an octagonal cross-sectional shape is used, and a net shape is formed by joining adjacent net members together, so that a water passage space is formed between the adjacent net members. It is possible to reduce the amount of the net member required for producing the same size filler. In addition, a synthetic resin net member having an octagonal cross-section is provided with short sides and long sides alternately, and the short sides are joined to form a block shape between adjacent net members. The cross-sectional area of the formed water passage space and the cross-sectional area of the water passage space of the net member itself are approximated, and the flow of the waste water in the filler is made uniform, and the biological treatment of the waste water can be smoothly performed. You can do it.

Further, the synthetic resin net member can be joined by fusion.

Thus, the adjacent synthetic resin net members can be easily and firmly joined to form a block shape.

Further, in order to achieve the second object, the method for producing a filler for a sewage treatment tank according to the present invention is characterized in that a plurality of tubular synthetic resin net members are arranged in parallel with each other. The method is characterized in that the net member is heated and the adjacent net members are fused to form a block shape.

[0013] This makes it possible to easily produce a filler for a sewage treatment tank having a high self-retaining property by using a preformed cylindrical synthetic resin net member.

In this case, it is preferable to heat the outer surface of the synthetic resin net member, whereby the joining surface of the net member can be efficiently heated and the self-retaining property of the net member is reduced. In addition, the adjacent net members can be easily and firmly joined to form a block shape.

Also, in order to achieve the second object,
An apparatus for manufacturing a filler for a sewage treatment tank according to the present invention includes a net member holding body that holds a plurality of cylindrical synthetic resin net members in a side-by-side state, and is movable to an outer peripheral surface of the net member holding body. A heating member, a heating member moving means for moving the heating member in a radial direction with respect to a central axis of the net member holding body, and a cooling means for cooling the fused synthetic resin net member. I do.

[0016] This makes it possible to easily manufacture a filler for a sewage treatment tank having a high self-retaining property by using a preformed cylindrical synthetic resin net member.

Also, in order to achieve the second object,
An apparatus for producing a filler for a sewage treatment tank according to the present invention comprises: a net member holding body that holds a plurality of cylindrical synthetic resin net members in a side-by-side state and is disposed so as to be capable of coming and going; Holding body moving means for moving the body in the direction of contact and separation, a heating member disposed so as to be insertable between adjacent net member holding bodies, and inserting the heating member between adjacent net member holding bodies; And a heating member moving means for pulling out from between the member holders.

[0018] This makes it possible to easily produce a filler for a sewage treatment tank having a high self-retaining property by using a preformed cylindrical synthetic resin net member. In this case, in particular, the joining surface of the net member can be efficiently heated, and the adjacent net members can be simply and firmly joined to each other without deteriorating the self-retaining property of the net member in a block shape. Can be formed.

In this case, it is preferable that the holding member moving means is configured to move the net member holding members toward the center so that the adjacent net member holding members approach each other. The heated joining surfaces of the synthetic resin net members to be joined can be tightly and uniformly joined in time to form a block.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of a filler for a sewage treatment tank, a method for producing the same, and a production apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 shows a first embodiment of a filler for a sewage treatment tank according to the present invention. This sewage treatment tank filler 1a is shown in FIG.
A plurality of (4 × 2) cylindrical synthetic resin net members 10a each having an octagonal cross-sectional shape are arranged in parallel, and the side surfaces of adjacent net members 10a are heat-fused into a block shape. It is formed.

In this case, the sewage treatment tank filler 1
The size a of the cross section of the synthetic resin net member 10a to be used is appropriately selected according to the sewage treatment tank to be filled with the sewage treatment tank filler 1a, and the number thereof is appropriately selected. Can be set arbitrarily. The filling material 1a for the sewage treatment tank shown in FIG.
1, W2 each 25cm, 50cm, length (height)
Although L is formed to 150 cm, the width dimensions W1,
W2 is about 100 cm at maximum and length (height) L
Is desirably set to a maximum of about 300 cm.

The tubular synthetic resin net member 10a includes:
Although not particularly limited, a synthetic resin material such as polyethylene or polypropylene is used as a raw material and molded by a continuous extrusion molding method in which a warp is formed while continuously extruding a warp from a mold (a triaxial pipe manufactured by Takiron Co., Ltd.). (Product name)). In this case, in addition to the cylindrical synthetic resin net member 10a, in addition to the cross-sectional shape of the present embodiment formed into an octagon, the cross-sectional shape formed into a polygon such as a hexagon or a circular shape is used. Can be used. The size (pitch) of the mesh of the net member 10a
Can have a shape of 3 to 20 mm, preferably about 10 mm, and the shape thereof can be a square, a rectangle, a rhombus, or any other shape.

As in the present embodiment, the filler 1a for a sewage treatment tank formed in a block shape by joining adjacent net members 10a using a synthetic resin net member 10a having an octagonal cross section is used. Since the water passage space 13 is formed between the adjacent net members 10a in addition to the water passage space 12 of the net member 10a itself, the amount of the net member required to produce the same size filler is used. Can be reduced.

FIG. 3 shows a second embodiment of the filler for a sewage treatment tank according to the present invention. This sewage treatment tank filler 1b is shown in FIG.
Octagonal cylindrical synthetic resin net member 10 having alternately short sides 11a and long sides 11b having the cross-sectional shape shown in FIG.
A plurality of b (3 × 2) are arranged in parallel, and the side surfaces of adjacent net members 10b are thermally fused to form a block shape.

In this case, the sewage treatment tank filler 1
b is the cross-sectional dimension of the synthetic resin net member 10b to be used according to the sewage treatment tank to be filled with the sewage treatment tank filler 1b, similarly to the sewage treatment tank filler 1a of the first embodiment. By appropriately selecting the length and the number of parallel lines, the size can be set arbitrarily. For example, the number of cylindrical synthetic resin net members 10b arranged in parallel is 3 × 2 in the sewage treatment tank filler 1b shown in FIG. As in the case of the filling material 1b ', 8 lines × 4 lines can be arranged in parallel. The other configuration of the filler for the sewage treatment tank of the present embodiment is the same as that of the filler for the sewage treatment tank of the first embodiment.

As in the present embodiment, the sectional shape is changed to the short side 11a.
And a long side 11b are provided alternately, and an octagonal synthetic resin net member 10b is used.
The sewage treatment tank fillers 1b and 1b 'formed by joining the short sides 11a of each other to form a block form include a water passage space 13 between adjacent net members 10b in addition to the water passage space 12 of the net member 10b itself. Since it is formed, in addition to being able to reduce the amount of use of the net member required to produce the same size filler, the water flow space 13 formed between the adjacent net members 10b can be formed. The cross-sectional area can be approximated to the cross-sectional area of the water passage space 12 of the net member 10b itself, the flow of the sewage in the fillers 1b, 1b 'can be made uniform, and the biological treatment of the sewage can be performed smoothly. It will be.

In each of the above embodiments, a plurality of cylindrical synthetic resin net members 10a and 10b are arranged in parallel, and the side surfaces of the adjacent net members 10a and 10b are
The block-shaped fillers 1a, 1b, 1b 'for sewage treatment tanks are formed by heat fusion over the entire length in the longitudinal direction. A first embodiment of an apparatus used for the production is shown in FIGS. As shown in FIG.

This sewage treatment tank filler manufacturing apparatus is used to manufacture the sewage treatment tank filler 1b of the second embodiment, and includes a plurality of cylindrical synthetic resin net members 10b.
Member 2 made of an extruded member made of aluminum, and a heating member 3 movably disposed on the outer peripheral surface of the net member 2 and holding the heating member 3 in a net member. Heating member moving means 4 for moving radially with respect to the central axis of the body 2; cooling means 5 for discharging high-pressure air toward the fusion portion of the net member 10b to cool the fusion portion; And a plurality of net members 10
and a stopper member 7 for aligning the ends of b.

The heating member 3 includes a stainless steel square pipe 31 disposed along the net member holder 2, and a sheath heater 32 disposed in the internal space of the square pipe 31.
By operating the heating member moving means 4 to move the heating member 3 in the radial direction with respect to the central axis of the net member holder 2, the cylindrical synthetic resin net member 10 is formed.
b is brought into contact with the short side 11a so that the surface of the net member 10b can be heated to a temperature at which it can be fused. The heating members 3 are arranged in four directions on the outer peripheral surface of the net member holder 2, that is, at positions corresponding to the short sides 11a of the cylindrical synthetic resin net member 10b. The heating member 3
Among them, the sheathed heater 32 is not provided at a position corresponding to the outer peripheral surface of the sewage treatment tank filler 1b, that is, at a position where heat fusion is not performed. However,
Like the other heating members 3, the heating member 3 is configured to operate the heating member moving means 4 to move in the radial direction with respect to the central axis of the net member holder 2.

The heating member moving means 4 includes a driving mechanism 40 such as an air cylinder, a sliding shaft 41 disposed in the internal space of the net member holder 2 slid by the driving mechanism 40, and a sliding shaft 41. A plurality of projecting pieces 42 protruding in four directions on the outer peripheral surface of the sliding shaft 41 at a plurality of locations (three places in this embodiment) of a longitudinal direction 41 and a shaft 43 formed on the projecting piece 42
And a shaft 4 fixed to the heating member 3 and formed on the protruding piece 42.
3 is formed with a sliding piece 44 that is bored at an angle with respect to the center axis of the sliding shaft 41.
The sliding member 41 is slid by the driving mechanism 40 to move the heating member 3 via the sliding piece 44 in the radial direction with respect to the central axis of the sliding shaft 41, that is, the central axis of the net member holder 2. Is to be moved to.

The support member 6 includes a base piece 60 and a plurality of portions in the longitudinal direction of the base piece 60 (in this embodiment,
(3 places), a support frame composed of a bottom piece 61, side pieces 62, 63 and an upper piece 64, a mold 66 arranged along the inner surface of the support frame, and a base end of the net member holder 2. And a fixing portion 67 to be formed. In this case, the side pieces 62 and 63 constituting the support frame are respectively attached to the bottom plate 61 by the butterfly plate 6.
The upper and lower pieces 64 are arranged so as to be swingable via the first and second side pieces 62, and the upper piece 64 is integrally attached to one of the side pieces 62. It is configured to be separable at the boundary between the piece 63 and the upper piece 64, whereby the side pieces 62, 63 are rocked via the butterfly plates 65, 65, and the form 66 moves around the net member holder 2. A closed position for covering (fusing step position) and an open position for not covering the periphery of the net member holder 2 (position for detaching the sewage treatment tank filler 1b with the attached or manufactured cylindrical synthetic resin net member 10b). ) And can be arbitrarily selected. Then, at a closed position (fusing step position) where the periphery of the net member holding body 2 is covered by the mold frame 66, the heating member moving means 4 is operated to move the heating member 3 with respect to the central axis of the net member holding body 2. By moving in the radial direction, the short side 11a of the net member 10b is sandwiched between the heating member 3 and the mold 66 at a position corresponding to the outer peripheral surface of the sewage treatment tank filler 1b, and Maintain molding accuracy.

The cooling means 5 has a plurality of air ejection holes formed in the peripheral surface of a square pipe made of stainless steel, and high-pressure air is supplied from the air ejection holes to a cylindrical synthetic resin net member 10b.
Is released toward the fused portion to cool the fused portion.

The stopper member 7 is constituted by disposing a stopper plate 71 at an end of a stainless steel square pipe 72 slidably disposed on the outer periphery of the square pipe of the cooling means 5.
Thus, when the cylindrical synthetic resin net member 10b is mounted on the net member holder 2, the end thereof is brought into contact with the stopper plate 71, and the manufactured sewage treatment tank filler 1b is produced.
So that the ends are aligned. In this case, the stopper plate 71 of the stopper member 7 can be fixed at an arbitrary position in the longitudinal direction of the space surrounded by the net member holder 2 by manually sliding the square pipe 72. Thereby, the sewage treatment tank filler 1b of an arbitrary length can be manufactured in a state where the ends thereof are aligned. The square pipe 72 of the stopper member 7 is connected to a high-pressure air supply pipe at the end opposite to the side where the stopper plate 71 is provided, and serves as a supply pipe for supplying high-pressure air to the cooling means 5. A function as a closed pipe for closing the air ejection hole formed in the peripheral surface of the square pipe of the cooling means 5 at a position where the cylindrical synthetic resin net member 10b does not exist to prevent wasteful use of high-pressure air. Has functions. In this case, at the position near the back surface of the stopper plate 71 (the side where the net member 10b does not exist), the discharge of high-pressure air from the air ejection holes formed in the peripheral surface of the square pipe of the cooling means 5 is allowed. A slit 72 having a predetermined length in the longitudinal direction of the square pipe 72 is provided at an end of the square pipe 72 at a position corresponding to the air ejection hole of the cooling means 5.
a is formed.

Next, a method of using the apparatus for producing a filler for a sewage treatment tank will be described. First, the square pipe 72 of the stopper member 7 is manually slid to operate the stopper plate 7.
1 is fixed at a position corresponding to the length of the sewage treatment tank filler 1b to be manufactured. By swinging the side pieces 62 and 63 through the butterfly plates 65 and 65, the mold frame 66 is set to an open position where the form member 66 does not cover the periphery of the net member holder 2, and a plurality of cylindrical synthetic resin net members 10b are formed. Are placed side by side in the net member holder 2
Attach to The side pieces 62, 63 are swung through the butterfly plates 65, 65 so that the mold 66 is in the closed position covering the periphery of the net member holder 2, and the heating member moving means 4 is operated to operate the heating member 3. Is moved in the radial direction with respect to the central axis of the net member holding body 2 so that the short side 11 of the net member 10b is moved.
a, and then contact the adjacent net members 10b, 10b
The surfaces of the net member 10b are heat-sealed while being held between the heating members 3 and 3 facing each other. At this time, the short side 11a of the net member 10b is sandwiched between the heating member 3 and the mold frame 66 at a position corresponding to the outer peripheral surface of the sewage treatment tank filler 1b to maintain the molding accuracy of the filler 1b. To do. Thereafter, the heating by the heating member 3 is stopped, high-pressure air is discharged from the air ejection holes of the cooling means 5 toward the fusion portion of the net member 10b, the fusion portion is cooled, the fusion portion is fixed, and heating is performed. By operating the member moving means 4 to move the heating member 3 in the radial direction with respect to the central axis of the net member holder 2,
The holding of the net member 10b by the facing heating members 3, 3 and the heating member 3 and the mold 66 is released. Side pieces 62, 63
Is swung through the butterfly plates 65, 65 so that the mold frame 66 is in an open position where it does not cover the periphery of the net member holder 2, and the manufactured sewage treatment tank filler 1b is removed from the net member holder 2. break away.

Next, FIGS. 9 to 17 show a second embodiment of an apparatus used for producing a similar filler for a sewage treatment tank.

The sewage treatment tank filler manufacturing apparatus holds a plurality of (in this embodiment, 6 × 6) cylindrical synthetic resin net members 10b in a side-by-side state. A net member holding member 102 made of an extruded member made of aluminum which is disposed as possible, and a net member holding member 10
2, a pressing member 121 made of a stainless steel square pipe material fixed to four sides of an outer peripheral surface, a holding member supporting means 108 for supporting the net member holding member 102, and a direction of moving the net member holding member 102 toward and away from the holding member 108. , A heating member 103a, 103b inserted between adjacent net member holders 102, and heating members 103a, 103b inserted between adjacent net member holders 102, Then, the heating member moving means 104a and 104b which are pulled out from between the net member holders 102 are used.

The net member holder 102 is shown in FIGS.
As shown by 2, the canister is supported by the holder supporting means 108 at the left end of the apparatus, so that the cylindrical synthetic resin net member 10 b is inserted into the net member holder 102 from the right end of the apparatus. It can be so. The holding member supporting means 108 includes horizontal rail members 181 and 181 that support the base end (the left end of the apparatus) of the net member holding member 102 so as to be movable in the horizontal direction.
Vertical rail members 182, 18 for supporting the base end of the net member holding body 102 supported on the base member 181 in a vertically movable manner.
2 and a plurality of net member holders 1 as shown in FIG.
The guide rods 183a and 183b penetrating through the base end of the net member holding member 102 so that the vertical and horizontal rows
2 to the adjacent net member holder 102.
And a movement amount regulating member 184 that regulates the movement amount.
In this case, the movement amount restricting member 184 allows the adjacent net member holders 102 to approach each other from the extended position shown in FIG. 14B by the maximum width W.

As shown in FIGS. 12 and 13, the holder moving means 109 for moving the net member holder 102 in the approaching / separating direction is provided at the base end (left end of the apparatus) of the net member holder 102. The net member holder 102 is moved laterally and the adjacent net member holder 102 is moved.
A horizontal holding member moving means 191 for applying a predetermined lateral pressing force between them, a vertical holding member moving means 192 for moving the net member holding member 102 in the vertical direction, and a predetermined holding member between adjacent net member holding members 102. A pressing means 193 for applying a pressing force in the vertical direction and an adjacent net disposed at the tip end (right end of the apparatus) of the net member holder 102 as shown in FIGS. 12, 13 and 16. Pressing means 194 for applying a predetermined lateral pressing force between the member holders 102;
And pressurizing means 195 for applying a predetermined vertical pressing force between adjacent net member holders 102.

The horizontal holder moving means 191 and the pressing means 19
3, 194, 195 use an air cylinder in this embodiment. Here, the lateral holding body moving means 191 connects the tip of the piston rod 191a to the net member holding body 102 located at the left and right ends, and when extended, via the net member holding body 102 located at the left and right ends. Thus, the net member holder 102 is moved toward the center of the apparatus, and a predetermined pressing force can be applied between the adjacent net member holders 102. In cooperation, the net member holder 102 can be returned to the separated state shown in FIG. 14B via the net member holders 102 located at the left and right ends. Further, the pressing means 193, 194, 195 can apply a predetermined pressing force between the adjacent net member holders 102 by pressing the net member holders 102 located at the left and right ends or the upper and lower ends. To do.

On the other hand, in the present embodiment, a pinion 192a driven by a motor and a rack 192b meshing with the pinion 192a, the tip of which is fixed to the horizontal rail members 181 and 181 are used as the vertical holder moving means 192. Like that. In this embodiment, each of the pinion 192a and the rack 192b has three positions so that the movement amount of the center-side net member holding member 102 is small and the movement amount of the upper and lower end-side net member holding members 102 is large. Formed in steps so that the net member holder 10
2 is moved toward the center of the apparatus, and the weight of the net member holder 102 is supported.
It is possible to eliminate a difference in vertical pressing force acting between them.

The heating members 103a and 103b are shown in FIG.
As shown in FIGS. 11 and 16, the vertical heating member 1 inserted between the adjacent net member holders 102 from above and below.
03a and a horizontal heating member 103b inserted from the horizontal direction.
Is divided into upper and lower parts and left and right parts, and the movable support members 130 of the heating members 103a and 103b are
a and 130b are provided on the outer peripheral surface of the net member holder 102.
A square pipe 131 made of stainless steel is fixed in accordance with the installation position of the pressing member 121 fixed to the side, and a sheath heater 132 is disposed in the internal space of the square pipe 131. In this case, the moving supports 130a and 130b of the heating members 103a and 103b can be smoothly inserted between the adjacent net member holders 102.
It is desirable that the tips of the movable supports 130a and 130b are formed at an acute angle. These heating members 103a and 103b
By operating the heating member moving units 104a and 104b, the heating members 103a and 103b are inserted between the adjacent net member holders 102 in order, and the holder moving units 10a and 103b are inserted.
9 to move the net member holding body 102 in the approaching direction, thereby forming the cylindrical synthetic resin net member 10.
b to contact the outer surface of the short side 11a of the net member 10b.
After the surface of the heating member 103a, 10a is heated to a temperature at which it can be fused, the holding member moving means 109 is operated to slightly move the net member holding member 102 in a direction in which the net member holding member 102 is separated.
Release the contact state between 3b and the surface of the net member 10b,
By operating the heating member moving means 104a, 104b, the heating members 103a, 103b are pulled out from between the net member holders 102. These heating members 103a, 103b
Are disposed at positions corresponding to the pressing members 121 fixed in four directions on the outer peripheral surface of the net member holding body 102, that is, the short sides 11a of the cylindrical synthetic resin net member 10b. In addition, among the pressing members 121 fixed in four directions on the outer peripheral surface of the net member holder 2, the filler 1 for the sewage treatment tank is used.
The square pipe 131 is not provided at a position corresponding to the outer peripheral surface of b, that is, at a position of the pressing member 121 where heat fusion is not performed.

As the heating member moving means 104a and 104b, an arbitrary driving mechanism including a rack and pinion mechanism, an air cylinder and the like can be used. In the present embodiment, the pinions 141a,
141a, and vertical support members 130a, 1 of the vertical heating member 103a meshing with the pinions 141a, 141a.
Racks 142a, 142a,
143a, 143a constitute the heating member moving means 104a of the vertical heating member 103a. On the other hand, the pinion 141b, 1
41b, the left and right moving supports 130b, 13 of the horizontal heating member 103b meshing with the pinions 141b, 141b.
0b respectively, the racks 142b, 142b, 1
43b and 143b constitute a heating member moving means 104b for the horizontal heating member 103b. As described above, the upper and lower movable supports 130a, 130a and the left and right movable supports 130b, 130b are respectively connected to the common pinions 141a, 141a or the pinions 141b, 14b.
1b to move the vertical support 13
0a, 130a or left and right moving supports 130b, 130
The movement of b can be easily synchronized. Also, the vertical heating member 103a fixed to a square pipe 131 having a sheathed heater 132 disposed in the internal space has a vertically movable support member 130a.
a, 130a and the left and right moving supports 130b, 130b of the horizontal heating member 103b are provided with the heating members 103a, 103b.
Sliding shafts 144a, 144a, 144b, 14
4b, each of which is supported so as to be movable in the horizontal direction or the vertical direction, and which is supported by the spacing support means 145a, 145b comprising a link mechanism and an urging means.
a, 130b are always held at equal intervals, and the parallel holding means 146a, 146a, 146
b, 146b, each moving support 130a, 130b
Is maintained so that the amount of insertion between adjacent net member holders 102 is always constant.

Although the cooling device is not particularly provided in the apparatus of this embodiment, for example, the net member holder 1
A large number of air ejection holes are formed in the peripheral surface of the cylindrical member 02, and high-pressure air is discharged from the air ejection holes toward the fusion portion of the cylindrical synthetic resin net member 10b to cool the fusion portion. It can also be configured to do so.

Next, a method of using the apparatus for manufacturing a filler for a sewage treatment tank will be described. First, a plurality of, in this embodiment, 36 cylindrical synthetic resin net members 10b
Are mounted on the net member holder 2 in a state of being arranged side by side. Next, as shown in FIG.
4a, the heating member 103a is inserted between the adjacent net member holders 102, and the horizontal holder moving means 191 is inserted.
And the pressurizing means 194 to operate the net member holder 102
By moving in the direction approaching (center horizontal direction),
The surface of the net member 10b is heated to a temperature at which the surface of the net member 10b can be fused by contacting the outer surface of the short side 11a of the cylindrical synthetic resin net member 10b (for example, 5 to 200 ° C and 1 kgf / cm ²⁾ .
After heating for 15 seconds, the horizontal holding member moving means 191 and the pressing means 194 are operated to slightly move the net member holding member 102 in the direction in which the net member holding member 102 is separated (horizontal left / right direction), so that the heating member 103a and the net member 10b are moved. Is released, and the heating member 103a is pulled out from between the net member holders 102 by operating the heating member moving means 104a. Immediately thereafter, the horizontal holding member moving means 191 and the pressing means 194 are operated to move the net member holding member 102 in the approaching direction (central horizontal direction), so that the adjacent cylindrical synthetic resin net member 10b is moved. The outer surfaces of the heated short sides 11a are brought into contact with each other and pressurized (for example, 1 kgf).
/ Cm ² for 1 to 10 seconds) for heat fusion. next,
As shown in FIG. 17B, the heating member moving means 104b
, The heating member 103b is inserted between the adjacent net member holders 102, and the vertical member moving means 192 and the pressing means 193, 195 are operated.
02 is moved in the approaching direction (central longitudinal direction) so as to come into contact with the outer surface of the short side 11a of the cylindrical synthetic resin net member 10b, and the surface of the net member 10b is heated to a temperature at which it can be fused. (E.g., heating at 200 ° C., 1 kgf / cm ² for 5 to 15 seconds), and then operating the vertical holding member moving means 192 and the pressing means 193, 195 to separate the net member holding member 102 (vertical vertical direction) ), The contact between the heating member 103b and the surface of the net member 10b is released, and the heating member moving means 104b is operated to pull out the heating member 103b from between the net member holders 102. To Immediately thereafter, by operating the vertical holding member moving means 192 and the pressing means 193, 195, the net member holding member 102 is moved in the approaching direction (center vertical direction), so that the adjacent cylindrical synthetic resin net member is moved. 10b are brought into contact with the outer surface between the heated short sides 11a of the pressurized (e.g., 1 kgf / cm ² in 10 seconds under pressure) and heat sealed to form the block shape. Then, the manufactured sewage treatment tank filler 1b is separated from the net member holder 2.

In this case, by heating the outer surface of the synthetic resin net member 10b, the net member 10b is heated.
Can be efficiently heated, and the net member 1
0b is prevented from being out of shape, and the net member 10b
Without deteriorating the self-retaining property, the adjacent net members 10b can be easily and firmly joined to form a block shape. Further, the holder moving means 109
Is configured to move adjacent net member holders 102 toward the center of the apparatus so that adjacent net member holders 102 approach each other, thereby eliminating a difference in the movement time of each net member holder 102. , Net member holder 1
02 inserted and attached to the adjacent synthetic resin net member 1
0b can be uniformly bonded temporally to the heated bonding surfaces.

Although the method for producing the sewage treatment tank filler 1b has been described above, a method for connecting a plurality of cylindrical synthetic resin net members in parallel and joining adjacent net members to each other is described in the following. The method is not limited to the method used.For example, adjacent net members are heat-sealed at a plurality of positions in the longitudinal direction of the net member, or a method of heat-sealing only at the end or the end surface, using an adhesive or a solvent. A method of bonding, a method of mechanically bonding using a fastener such as an appropriate synthetic resin or metal fastener, or the like can be used.

[0048]

According to the filler for a sewage treatment tank of the present invention,
Since the tubular net members made of synthetic resin are arranged side by side and the adjacent net members are joined to each other, the self-retaining property is high, and a large-sized filler can be manufactured. The work efficiency of transport work and filling work can be improved. In addition, the size of the filler can be arbitrarily set by appropriately selecting the cross-sectional dimensions, length, and the number of parallel lines of the cylindrical synthetic resin net member to be used. Can be easily handled.

Further, by using a synthetic resin net member having a polygonal cross-sectional shape, adjacent net members can be easily joined to each other, thereby improving the molding accuracy of the filler for the sewage treatment tank. Can be improved.

Also, by using a synthetic resin net member having an octagonal cross section and joining the adjacent net members to form a block shape, a water flow space is formed between the adjacent net members. Therefore, it is possible to reduce the use amount of the net member required for manufacturing the same size of the filler, and to reduce the manufacturing cost.

Further, by using an octagonal synthetic resin net member having alternately short sides and long sides in a cross-sectional shape, the short sides are joined to form a block shape, so that adjacent nets are formed. In addition to being able to form a water flow space between the members, reducing the amount of the net members required to produce the same size of filler, and reducing the production cost, The cross-sectional area of the water flow space formed between the adjacent net members can be approximated to the cross-sectional area of the water flow space of the net member itself, and uniformity of the flow of the sewage in the filler material enables biological treatment of the sewage. Can be performed smoothly.

Further, by fusing and joining the synthetic resin net members, the synthetic resin net members can be easily and firmly joined to form a block shape.

Further, according to the method and apparatus for manufacturing a filler for a sewage treatment tank of the present invention, a highly self-retaining sewage treatment tank is formed by using a preformed cylindrical synthetic resin net member. The filler can be easily manufactured.

Further, by heating the outer surface of the synthetic resin net member, the joint surface of the net member can be efficiently heated, and the adjacent net member can be heated without lowering the self-retaining property of the net member. They can be easily and firmly joined together to form a block.

Further, the holding member moving means is configured to move the net member holding members toward the center so that the adjacent net member holding members approach each other, so that each of the adjacent synthetic resin net members is moved. The heated joint surfaces can be uniformly and strongly joined temporally to form a block.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of a filler for a sewage treatment tank according to the present invention, wherein (a) is a plan view and (b) is a front view.

FIG. 2 is a perspective view showing a cylindrical synthetic resin net member used for manufacturing the sewage treatment tank filler of FIG.

3A and 3B show a second embodiment of a filler for a sewage treatment tank according to the present invention, wherein FIG. 3A is a plan view and FIG. 3B is a front view.

FIG. 4 is a perspective view showing a tubular synthetic resin net member used for manufacturing the sewage treatment tank filler of FIG. 3;

5A and 5B show a modification of the second embodiment of the filler for a sewage treatment tank according to the present invention, wherein FIG. 5A is a plan view and FIG. 5B is a front view.

FIG. 6 is a diagram showing a first example of the apparatus for producing a filler for a sewage treatment tank of the present invention.
It is a front sectional view showing an example.

FIG. 7 is a front sectional view showing the main part.

FIG. 8 is an enlarged sectional view taken along line AA of FIG. 7;

FIG. 9 shows a second embodiment of the apparatus for producing a filler for a sewage treatment tank according to the present invention.
It is a front sectional view showing an example.

FIG. 10 is a right side view of the same.

FIG. 11 is an explanatory diagram of the net member holder and the heating member.

FIG. 12 is a front sectional view showing the holder moving unit and the heating member moving unit.

FIG. 13 is a left side view showing the holder moving unit.

FIG. 14 is a left side view showing the holder supporting means, and FIG.
FIG. 3B is a side view of the movement amount regulating member, FIG. 3B is a cross-sectional view taken along the line AA of FIG. 3A, and FIG.

FIG. 15 is a front sectional view of a main part showing the holder moving means.

FIG. 16 is a left side view showing the holder moving unit and the heating member moving unit.

FIG. 17 is an explanatory view showing a manufacturing process of a filler for a sewage treatment tank.

[Explanation of symbols]

 1a Filler for sewage treatment tank 1b Filler for sewage treatment tank 1b 'Filler for sewage treatment tank 10a Tubular synthetic resin net member 10b Tubular synthetic resin net member 11a Short side 11b Long side 12 Water flow space DESCRIPTION OF SYMBOLS 13 Water passing space 2 Net member holding body 3 Heating member 4 Heating member moving means 5 Cooling means 6 Supporting member 7 Stopper member 102 Net member holding body 103 Heating member 104 Heating member moving means 108 Holding body supporting means 109 Holding body moving means

Claims (10)

[Claims] 1. A filler for a sewage treatment tank, wherein a plurality of tubular synthetic resin net members are arranged in parallel, and adjacent net members are joined to form a block. 2. The filler for a sewage treatment tank according to claim 1, wherein a cylindrical synthetic resin net member having a polygonal cross section is used. 3. The sewage treatment tank filler according to claim 2, wherein a cylindrical synthetic resin net member having an octagonal cross section is used. 4. A sectional shape comprising alternately short sides and long sides,
The filling material for a sewage treatment tank according to claim 3, wherein short sides of the cylindrical synthetic resin net member formed in a rectangular shape are joined to each other. 5. The filling material for a sewage treatment tank according to claim 1, wherein a synthetic resin net member is fused and joined. 6. In a state in which a plurality of cylindrical synthetic resin net members are arranged in parallel, the synthetic resin net members are heated, and adjacent net members are fused to form a block shape. Method for producing a filler for a sewage treatment tank. 7. The method for producing a filler for a sewage treatment tank according to claim 6, wherein the outer surface of the synthetic resin net member is heated. 8. A net member holder for holding a plurality of cylindrical synthetic resin net members in a side-by-side state, a heating member movably disposed on an outer peripheral surface of the net member holder,
A filler for a sewage treatment tank, comprising: a heating member moving means for moving the heating member in a radial direction with respect to a central axis of a net member holding body; and a cooling means for cooling a fused synthetic resin net member. Manufacturing equipment. 9. A net member holder holding a plurality of cylindrical synthetic resin net members in a side-by-side state, and a net member holder arranged so as to be able to contact and separate, and a holding member for moving the net member holder in the contact and separation direction. Body moving means, a heating member disposed so as to be insertable between adjacent net member holders, and a heating member for inserting the heating member between adjacent net member holders and then withdrawing from between the net member holders An apparatus for producing a filler for a sewage treatment tank, comprising a moving means. 10. The sewage treatment according to claim 9, wherein the holder moving means is configured to move the net member holder toward the center so that adjacent net member holders approach each other. Production equipment for tank filling material.