JP6132508B2 - Container, water tank, and septic tank - Google Patents

Description

  The present invention relates to a container having a joint portion for joining a first member having a fitting portion and a second member having a fitted portion via an adhesive.

  As said container, the septic tank described in patent document 1 can be mentioned, for example. In the septic tank, the end of the partition wall (fitting part of the first member) is connected to the fitting concave part (fitted part of the second member) provided on the main body side via a sealing material (adhesive). They are fitted and reinforced with bolts and rivets.

JP-A-10-296278

In the conventional septic tank, there is a possibility that it will come off due to the adhesion between the sealing material and the end of the partition wall, and it has been reinforced with bolts or rivets.
An object of the present invention is to obtain an equivalent strength without reinforcing with bolts or rivets, and to eliminate the work of bolting or the like, thereby improving the efficiency of assembly work.

1st characteristic structure which concerns on the container of this invention is the junction part which joins the 1st member which has a fitting part over the up-down direction, and the 2nd member which has a to-be-fitted part over the up-down direction via an adhesive agent. The adhesive can be bonded to at least the fitted portion of the second member, and a projection is provided on the fitting portion of the first member, and the projection is a linear projection. The linear protrusion is at least one of a horizontal linear protrusion extending in the pulling direction of the first member and an inclined linear protrusion extending in a direction intersecting the pulling direction of the first member. It is in.

[Action and effect]
According to this configuration, since the adhesive can be bonded to at least the fitted portion of the second member and the protrusion is provided on the fitting portion of the first member, the joining area is increased and the engagement force is increased. Will be strengthened. Further, since the frictional force increases, it becomes strong against tension and is difficult to come off.
According to this configuration, when the first member is fitted to the fitted portion of the second member via the adhesive, the adhesive contacting the surface of the linear protrusion is changed from the surface to the shape of the linear protrusion. And move around along. Therefore, it becomes easy to arrange the adhesive on the surface on the drawing direction side.
According to this configuration, when the drawing direction and the fitting direction are opposite to each other, the adhesive contacting the surface of the linear protrusion by fitting is in a direction intersecting the horizontal linear protrusion extending in the drawing direction or the drawing direction. It goes around along the extending inclined line-shaped protrusion, and spreads more reliably on the surface of the protrusion in the drawing direction. Further, since the adhesive is solidified even on the horizontal surface or the inclined surface of the linear protrusion, it is difficult to come off in the vertical direction .

In the second characteristic configuration, the inclined linear protrusion extends so that the lower linear line protrusion approaches the second member toward the lower side, and the second inclined linear protrusion extends so as to approach the second member toward the upper side. Is at least one of the points.

[Action and effect]
According to this structure, it becomes difficult to remove | deviate in a drawing direction and an up-down direction.

The third characteristic configuration is that the fitting portion of the first member has a convex shape and the fitted portion of the second member has a concave shape .

[Action and effect]
According to this configuration, since the adhesive is poured into the concave shape, it is easy to hold the adhesive and the workability is improved .

The fourth characteristic configuration is that the material of the first member is different from the material of the second member .

[Action and effect]
According to this configuration, even when the materials of the first member and the second member are different and it is difficult to bond both the members with an adhesive, the mated portion is used by using the adhesive that can be bonded to the second member. By applying the adhesive to the first member, the first member is fitted, so that the first member can be firmly joined by the frictional force and the engaging force between the protrusion of the first member and the solidified adhesive .

A 5th characteristic structure is a container which has a junction part which joins the 1st member which has a fitting part over the up- and- down direction, and the 2nd member which has a to-be-fitted part over the up- and- down direction via adhesives. The adhesive can be bonded to at least the fitted portion of the second member, and a projection is provided on the fitting portion of the first member, and the projection is a linear projection, The fitting portion of the member has a convex shape and is provided with linear protrusions on both side surfaces of the fitting portion.

[Action and effect]
According to this configuration, since the adhesive can be bonded to at least the fitted portion of the second member and the protrusion is provided on the fitting portion of the first member, the joining area is increased and the engagement force is increased. Will be strengthened. Further, since the frictional force increases, it becomes strong against tension and is difficult to come off.
According to this configuration, when the first member is fitted to the fitted portion of the second member via the adhesive, the adhesive contacting the surface of the linear protrusion is changed from the surface to the shape of the linear protrusion. And move around along. Therefore, it becomes easy to arrange the adhesive on the surface on the drawing direction side.
According to this configuration, since the engagement between the protrusion of the first member and the adhesive solidified in the fitted portion of the second member works from both side surfaces, the fitting portion of the first member is pulled out. It becomes harder to come off against.

6th characteristic structure is equipped with the 1st inclination linear processus | protrusion extended so that the lower side may approach the said 2nd member in the one side of the said convex-shaped fitting part, and it approaches the said 2nd member in the other side. It is in the point provided with the 2nd inclined linear protrusion extended so.

[Action and effect]
According to this configuration, by changing the direction of the inclined linear protrusions on both side surfaces, the direction of the engagement of the adhesive solidified in the protrusion of the first member and the fitted portion of the second member changes. For this reason, it becomes difficult to come off with respect to the pulling direction and also hard to come off in the vertical direction .

In the seventh characteristic configuration, a horizontal linear protrusion extending in the pulling direction of the first member on each of both side surfaces of the convex fitting portion, and a first inclined linear shape extending closer to the second member toward the lower side. It is in the point provided with the 2nd inclined linear protrusion extended so that a protrusion and the above-mentioned 2nd member may be approached to the upper part .

[Action and effect]
According to this configuration, the horizontal linear protrusions, the first inclined linear protrusions, and the second inclined linear protrusions are provided on both side surfaces, and by changing the direction of the linear protrusions, the protrusions of the first member and the second Since the direction of the engagement of the solidified adhesive within the fitted portion of the member changes, it becomes even more difficult to disengage in both the drawing direction and the vertical direction .

The eighth characteristic configuration is that the adhesive is disposed on the surface of the protrusion of the first member on the drawing direction side .

[Action and effect]
According to this configuration, since the adhesive is solidified on the surface on the drawing direction side of the protrusion of the first member, the adhesive is engaged with the drawing direction. Therefore, the bonding force between the first member and the second member is further increased.

The characteristic structure which concerns on the water tank of this invention exists in the point using the container which has either of the said 1st- 8th characteristic structure.

[Action and effect]
According to this configuration, the bonding strength is achieved by the action of the two structures of the fitting structure of the fitting portion of the first member and the fitted portion of the second member and the engagement structure of the solidified adhesive and the protrusion. For this reason, there is little risk of breakage against water pressure in a container containing water such as a water tank.

The characteristic structure which concerns on the septic tank of this invention exists in the point provided with the water tank using the container which has either of the said 1st- 8th characteristic structure.

[Action and effect]
According to this configuration, the joint strength is increased by the two functions of the protruding portion of the fitting portion of the first member, the frictional force by the adhesive, and the engagement structure, so that the water-tightness and airtightness can be maintained.

It is the top view which showed roughly the internal structure of the septic tank which concerns on this invention. It is the longitudinal section showing the internal structure of the septic tank concerning the present invention roughly. It is a perspective view which shows the inside of the support | carrier fluidization tank in a septic tank, a moving bed filtration tank, a treated water tank, and a disinfection tank, (a) shows the state which accommodated the filtration support | carrier in the moving bed filtration tank, (b) The state where the filtration carrier is omitted is shown so that the inside of the moving bed filtration tank can be easily understood. It is a perspective view of an aerobic filter bed tank. It is a perspective view of an aerobic main-body part. It is a cross-sectional view of an aerobic main-body part. It is a cross-sectional view near the bent portion of the aerobic main body. It is a disassembled perspective view which shows the assembly procedure of an aerobic filter bed tank. It is a perspective view which shows the attachment method of the 2nd precipitation baffle with respect to an aerobic main-body part. It is a cross-sectional view of the junction part of an aerobic main-body part and a 2nd precipitation baffle. It is a perspective view which shows the attachment method of the aerobic main-body part with respect to a partition wall. It is a perspective view of a moving bed filtration tank. It is a disassembled perspective view of a moving bed filtration tank. It is a cross-sectional view of a side wall member. It is a cross-sectional view near the bent part of the side wall member. It is a perspective view which shows the attachment method of the moving bed filtration tank with respect to a partition wall. It is a perspective view of the junction part of a moving bed filtration tank and a partition wall. It is the figure which showed typically another embodiment of the linear protrusion. It is the figure which showed typically another embodiment of the projection part.

As an embodiment of the container of the present invention, a septic tank for treating domestic wastewater and the like will be described based on the drawings.
[Configuration of septic tank]
As shown in FIGS. 1 and 2, the septic tank 1 has an upstream side wall 3, a downstream side wall 4, a right side wall 5, and a left side wall 6 erected from each of the four sides of the bottom surface 2. Are provided, and a right side wall 5 and a left side wall 6 are provided with a main body portion 7 arranged to face each other. A direction in which the upstream side wall 3 and the downstream side wall 4 are located is a longitudinal direction X, and a direction in which the right side wall 5 and the left side wall 6 are located is a width direction Y.

  In the main body 7, an aerobic filter bed tank A (an example of a first member) serving as a raw water tank for receiving raw water to be treated from the upstream side in the moving direction of the water to be treated (domestic wastewater, etc.), Precipitation separation tanks B1 to B3 that separate solids in treated water, anaerobic filter bed tank C that performs anaerobic treatment with anaerobic microorganisms, and aerobic microorganisms that allow a plurality of carriers to flow in the treated water by aeration The carrier fluidized tank D for the treatment, the moving bed filtration tank E (an example of the first member) that filters the water to be treated treated in the carrier fluidized tank D with the carrier, and filtered through the movable bed filtration tank E. A treated water tank F that temporarily stores treated water and a disinfection tank G that disinfects treated water stored in the treated water tank F and discharges the treated water from the outlet 75 to the outside are disposed.

  The raw water inflow pipe 8 extends from the upper end of the upstream side wall 3 of the septic tank 1 to above the aerobic filter bed 40 in the aerobic filter bed A. The water to be treated flows into the upper part of the aerobic filter bed 40 from the raw water inflow pipe 8 and is subjected to a decomposition process by aerobic microorganisms while moving down in the aerobic filter bed 40.

  The water to be treated that flows out from the lower end of the aerobic filter bed 40 passes through the first communication port T1 (see FIG. 5) provided at the lower end of the right wall 11 of the aerobic main body 10 and passes through the aerobic filter. It moves to the sedimentation separation tank B1 adjacent to the right of the floor tank A. The treated water moved to the precipitation separation tank B1 passes through the second communication port T2 provided in the first precipitation baffle 80, and enters the precipitation separation tank B2 adjacent to the upstream side wall 3 side of the aerobic filter bed tank A. Moving. The treated water moved to the precipitation separation tank B2 passes through the third communication port T3 provided in the second precipitation baffle 90 and moves to the precipitation separation tank B3 adjacent to the left side of the aerobic filter bed tank A. In this way, the water to be treated that has undergone aerobic treatment in the aerobic filter bed A moves in order with the precipitation separation tanks B1, B2, B3 so as to go around the aerobic filter bed A, Solids in the treated water are precipitated and removed.

  The treated water separated in the sedimentation separation tank B3 moves from the fourth communication port T4 of the partition wall W1 to the anaerobic filter bed tank C. As shown in FIG. 1, the fourth communication port T4 is on the left side (left side wall 6 side) of the partition wall W1 with respect to the center Z in the width direction Y of the precipitation separation tank B1, and the aerobic filter bed tank A. It is provided in the middle part of the up-down direction near.

  The water to be treated that flows into the anaerobic filter bed C from the fourth communication port T4 is guided by the first baffle plate 45 and descends along the partition wall W1, passes through the anaerobic filter bed 42 upward, and is anaerobically treated. At the same time, the water to be treated, in which suspended solids are trapped and solid matter is almost decomposed, is guided to the second baffle plate 46 and flows into the carrier fluid tank D by overflow from the fifth communication port T5 provided in the partition wall W2. To do.

  The carrier fluid tank D is provided with an aeration unit 43 for aeration at the bottom. A large number of fluid carriers 44 carrying aerobic microorganisms are accommodated so that they can flow together with the water to be treated by aeration from the air diffuser 43.

  As shown in FIGS. 3A and 3B, the water to be treated that has flowed into the carrier fluidized tank D flows together with the fluidized carrier 44 while receiving supply of oxygen by aeration from the air diffuser 43 and is aerobic. After the treatment, together with suspended solids such as sludge, it flows into the moving bed filtration tank E by overflow from the sixth communication port T6 provided in the side wall member 51 of the moving bed filtration tank E.

  The treated water that has flowed into the moving bed filtration tank E from the sixth communication port T6 is filtered by the filtration layer formed by the plurality of filtration carriers 50, and then the lower side of the cover member 72 of the moving bed filtration tank E. It flows into the treated water tank F from the 7th communication port T7 provided in and is temporarily stored. In this embodiment, the water to be treated in the carrier flow tank D flows into the moving bed filtration tank E from the sixth communication port T6, and the water to be treated in the moving bed filtration tank E flows from the ninth communication port T9 to the carrier flow. By flowing into the tank D, the water to be treated can be circulated between the carrier fluid tank D and the moving bed filtration tank E.

  The treated water stored in the treated water tank F flows into the inflow path 73 provided on the upper right side of the sterilization tank G, and is sterilized by overflow from the eighth communication port T8 provided on the inner wall 74 of the inflow path 73. It flows into the tank G.

  The treated water that has flowed into the sterilization tank G is sterilized in contact with the drug in the drug cylinder, and then discharged to the outside through the discharge port 75 provided in the downstream side wall 4.

[Aerobic filter bed tank]
As shown in FIG. 2, the aerobic filter bed tank A supplies air from below to the aerobic main body part 10, the aerobic filter bed part 40 inhabited by aerobic microorganisms, and the aerobic filter bed part 40. A diffuser tube 41 is provided. The treated water flows from the raw water inflow pipe 8 into the upper part of the aerobic filter bed 40 and passes through the aerobic filter bed 40, and the organic matter is decomposed by the aerobic microorganisms.

  As shown in FIG. 1, the aerobic filter bed tank A is provided eccentrically on the right side (right wall 5 side) with respect to the center Z in the width direction Y of the main body 7. Therefore, the width of the first precipitation baffle 80 is set smaller than the width of the second precipitation baffle 90.

  As shown in FIGS. 4 and 5, the aerobic main body portion 10 of the aerobic filter bed A includes a right wall portion 11, a front wall portion 16, and a left wall portion 20. As shown in FIGS. 6 and 7, each of the right wall portion 11 and the left wall portion 20 is connected to the front wall portion 16 via a bent portion 30 whose thickness is thinner than other portions.

  The aerobic main body 10 of the aerobic filter bed A is formed into a flat plate by a known injection molding method using a flexible material such as polypropylene or vinyl chloride (an example of a constituent material of the first member). Is done. Then, as shown in FIGS. 6 and 7, each of the right wall portion 11 and the left wall portion 20 is bent at the bending portion 30 so as to face each other, so that each of the right wall portion 11 and the left wall portion 20 is The aerobic main body portion 10 is formed so as to be orthogonal to the front wall portion 16 in a plan view and has a U-shaped cross-sectional shape. In this embodiment, the aerobic main body portion 10 of the aerobic filter bed tank A is molded by injection molding, but is not limited to this.

  As shown in FIG. 5, the right wall portion 11, the front wall portion 16, and the left wall portion 20 all have shapes in which convex portions 35 and concave portions 36 are alternately arranged along the vertical direction. In the middle of the width direction, a reinforcing rib 37 extending in the vertical direction is provided upright.

  A circular through hole 17 through which the raw water inflow pipe 8 is inserted is formed at the upper end portion of the front wall portion 16. A lower fitting piece 18 having a convex longitudinal section is provided at the lower end of the front wall portion 16 over the entire width direction. On both side surfaces of the lower fitting piece 18, inclined linear protrusions extending obliquely with respect to the vertical direction are provided.

  A first communication port T <b> 1 is formed at the lower end of the right wall portion 11. A fixing member (not shown) for fixing an aerobic filter bed (for example, an aerobic filter net) is provided on the inner side surface of the right wall part 11. A right-side fitting piece 13 (an example of a convex fitting portion) having a convex cross section across the entire vertical direction is provided at the side end of the right wall portion 11. The right-side fitting piece 13 has a shape such that the flat portions 13a and the raised portions 13b that protrude from the flat portions 13a are alternately arranged in the vertical direction when viewed from the lateral side. In addition, a plurality of first inclined linear protrusions 14 are provided on the lateral outer surface of the right fitting piece 13 so as to be positioned higher on the end side along the vertical direction. A plurality of second inclined linear protrusions 15 are provided on the lateral inner side surface along the vertical direction so as to be inclined so as to be positioned closer to the end side.

  A lower fitting piece 22 having a convex longitudinal section is provided at the lower end of the left wall portion 20 in the entire width direction. On both side surfaces of the lower fitting piece 22, inclined linear protrusions extending obliquely with respect to the vertical direction are provided.

  A fixing member 21 for fixing an aerobic filter bed (for example, an aerobic filter floor net or the like) is provided on the inner side surface of the left wall 20. A left side fitting piece 23 (an example of a convex fitting portion) having a convex cross section across the entire vertical direction is provided at a side end portion of the left wall portion 20. The left fitting piece 23 has a shape such that the flat portions 23a and the raised portions 23b that protrude from the flat portions 23a are alternately arranged in the vertical direction when viewed from the lateral side. In addition, a plurality of first inclined linear protrusions 24 are provided on the lateral outer side surface of the left fitting piece 23 so as to be positioned higher toward the end side along the vertical direction. A plurality of second inclined linear protrusions 25 that are inclined so as to be positioned lower toward the end side are provided on the lateral inner side surface along the vertical direction.

As shown in FIG. 7, a concave portion 31 extending in the vertical direction is provided in the vicinity of the front wall portion 16 side of the bent portion 30, and in the vertical direction in the vicinity of the left wall portion 20 side of the bent portion 30. The extending concave part 32 is provided, and the concave part 31 and the concave part 32 are connected via the bent part 30. Although not shown, a concave portion is similarly provided in the vicinity of the bent portion located on the right wall portion side.

  By bending the left wall portion 20 in the bent portion 30 in the direction indicated by the one-dot chain line arrow in FIG. 7, the outer surface 32a of the concave shape portion 32 is disposed opposite to the bottom surface 31a of the concave shape portion 31 to form a concave shape. The upper surface 32b of the portion 32 is disposed opposite to the inner side surface 31b of the concave shaped portion 31, and the surface of the front wall portion 16 and the other outer side surface 32c of the concave shaped portion 32 are flush with each other.

  As a result, the left wall portion 20 is disposed so as to be orthogonal to the front wall portion 16 in plan view, and the left fitting protrusion 33 having a cross-sectional shape protruding in an L shape is formed in the bent portion 30. The Further, as shown in FIG. 6, the right wall 11 is similarly bent at the bent portion so as to face the left wall 20, so that the right fitting protrusion 34 having a L-shaped projecting cross section is formed. It is formed.

  As shown in FIG. 9, an L-shaped recess 91 extending in the vertical direction is formed at the side end of the second sedimentation baffle 90, and a fitting groove 92 ( 4), and a lower fitting piece 93 (see FIGS. 4 and 8) having a convex longitudinal section is provided at the lower end in the entire width direction. In addition, inclined linear protrusions extending obliquely with respect to the vertical direction are provided on both side surfaces of the lower fitting piece 93.

  Similarly to the second sedimentation baffle 90, an L-shaped recess 81 extending in the vertical direction is formed at the side end portion of the first sedimentation baffle 80 and extending in the vertical direction at the other side end portion. A fitting groove 82 (see FIGS. 4 and 8) is formed, and a lower fitting piece 83 (see FIG. 4) having a convex longitudinal section is provided at the lower end in the entire width direction. Yes. In addition, inclined linear protrusions extending obliquely with respect to the vertical direction are provided on both side surfaces of the lower fitting piece 83.

  As shown in FIGS. 8 to 10, the first precipitation baffle 80 and the second precipitation baffle 90 can be joined to the aerobic main body 10. Specifically, as shown in FIG. 9 and FIG. 10, by fitting the recess 91 of the second sedimentation baffle 90 from above and sliding it downward on the left fitting protrusion 33 of the aerobic main body 10, The left fitting protrusion 33 of the aerobic main body 10 is engaged with the recess 91 of the second sedimentation baffle 90 to form a joint between the aerobic main body 10 and the second sedimentation baffle 90. Although not shown, the right fitting protrusion 34 of the aerobic main body 10 is fitted to the right fitting protrusion 34 of the aerobic main body 10 by sliding the dent 81 of the first sedimentation baffle 80 from below and sliding downward. The protrusion 34 is engaged with the recess 81 of the first sedimentation baffle 80, and a joint portion between the aerobic main body 10 and the first sedimentation baffle 80 is formed.

  As shown in FIG. 8, on the side of the partition wall W1 (an example of the second member) on the side of the aerobic filter bed A, the left side of the fourth communication port T4 (on the paper surface of FIG. 8, the right side of the fourth communication port T4) ) Are provided with two left vertical ribs 95 extending in the vertical direction, thereby forming a left fitting groove 96 (an example of a concave fitting portion). In addition, on the side surface of the partition wall W1 on the side of the aerobic filter bed A, the two on the left side (on the paper surface of FIG. 8, further to the right side of the left fitting groove 96) in the vertical direction A right vertical rib 97 is provided, thereby forming a right fitting groove 98 (an example of a recessed fitting portion). The distance between the left fitting groove 96 and the right fitting groove 98 coincides with the distance between the left fitting piece 23 and the right fitting piece 13 in the aerobic main body 10 formed in a U-shape. To do. In addition, the partition wall W1 is comprised by FRP etc., for example.

  As shown in FIG. 11 (FIG. 11 only shows a state in which a joint between the left fitting piece 23 and the left fitting groove 96 is formed, and the right fitting piece 13 and the right fitting groove 98 are shown. Although a state where the joint portion is formed is not shown, the joint portion between the right fitting piece 13 and the right fitting groove 98 is also a joint portion between the left fitting piece 23 and the left fitting groove 96. The right and left fitting grooves 98 and 96 in the partition wall W1 are filled with at least an adhesive (not shown) that can be bonded to the partition wall W1. By fitting the right fitting piece 13 and the left fitting piece 23 in the main body portion 10 into the right fitting groove 98 and the left fitting groove 96 in the partition wall W1, the right fitting piece 13 and the left fitting piece are fitted. Each of the pieces 23 is disposed only in the right fitting groove 98 and the left fitting groove 96. It is. And the junction part of the right side fitting piece 13 and the right side fitting groove | channel 98 and the junction part of the left side fitting piece 23 and the left side fitting groove | channel 96 are formed, and the aerobic main-body part 10 and the partition wall W1 are joined. To do.

  At this time, the adhesive is used to remove the first inclined linear protrusions 14 and the second inclined linear protrusions 15 of the right fitting piece 13 and the first inclined linear protrusions of the left fitting piece 23. 24 and the second inclined linear protrusions 25 are moved and arranged so as to surround the respective surfaces in the drawing direction and are solidified. Thereby, in the fitting structure of the aerobic filter bed A, each of the right fitting piece 13 and the left fitting piece 23 is difficult to come off from the right fitting groove 98 and the left fitting groove 96, and the adhesive Solidification makes it difficult for sewage and air in the tank to leak from the side wall to the outside. Although not shown, each of the first inclined linear protrusions 14 and 24 and the second inclined linear protrusions 15 and 25 extends in a direction intersecting with the drawing direction of the aerobic main body 10 of the aerobic filter bed A. Is in a state. That is, the first inclined linear protrusion 14 of the right fitting piece 13 and the first inclined linear protrusion 24 of the left fitting piece 23 extend so as to approach the partition wall W1 toward the upper side. The second inclined linear protrusion 15 and the second inclined linear protrusion 25 of the left fitting piece 23 are in a state of extending toward the partition wall W1 toward the lower side.

  A concave groove (not shown) is formed on the bottom surface 2 of the main body portion 7, and convex portions (not shown) extending in the vertical direction are formed on the right side wall 5 and the left side wall 6 of the main body portion 7. Yes. While fitting the fitting groove 82 of the first sedimentation baffle 80 and the fitting groove 92 of the second sedimentation baffle 90 into the convex parts (not shown) formed on the right side wall 5 and the left side wall 6 of the main body 7, respectively. The lower fitting piece 18 of the front wall portion 16 and the lower fitting piece 22 of the left wall portion 20 in the aerobic main body portion 10 with respect to the groove (not shown) formed in the bottom surface 2 of the main body portion 7, the first By fitting the lower fitting piece 83 of the precipitation baffle 80 and the lower fitting piece 93 of the second precipitation baffle 90 from above, the aerobic main body 10, the first precipitation baffle 80, and the second precipitation baffle 90. Are fixed to the main body 7.

  At this time, a groove (not shown) formed on the bottom surface 2 of the main body portion 7 is filled with an adhesive that can be adhered to at least the bottom surface 2 of the main body portion 7, and the front wall portion in the aerobic main body portion 10 is filled. 16, the lower fitting piece 22 of the left wall portion 20, the lower fitting piece 83 of the first sedimentation baffle 80, and the lower fitting piece 93 of the second sedimentation baffle 90. The joined portion is formed by being fitted into the body, and the joined body of the aerobic main body portion 10, the first precipitation baffle 80, and the second precipitation baffle 90 is joined to the bottom surface of the main body portion. The adhesive is an inclined linear protrusion of the lower fitting piece 18 of the front wall portion 16, an inclined linear protrusion of the lower fitting piece 22 of the left wall portion 20, and the lower fitting piece 83 of the first precipitation baffle 80. Each of the inclined linear protrusions and the inclined linear protrusions of the lower fitting piece 93 of the second precipitation baffle 90 are arranged and solidified so that the adhesive wraps around the surface in the drawing direction. Thereby, in the fitting structure of the aerobic filter bed A, the lower fitting piece 18 of the front wall portion 16, the lower fitting piece 22 of the left wall portion 20, and the first precipitation baffle 80 in the aerobic main body portion 10. Each of the lower fitting piece 83 and the lower fitting piece 93 of the second sedimentation baffle 90 is unlikely to be removed from a groove (not shown), and the sewage and air in the tank are exposed from the bottom to the outside due to the solidification of the adhesive. It becomes difficult to leak.

[Moving bed filtration tank]
As shown in FIGS. 12 and 13, the moving bed filtration tank E includes a side wall member 51, a throat member 70, and a cover member 72.

  As shown in FIG. 14, the side wall member 51 includes a first side wall portion 52 and a second side wall portion 54. The side wall member 51 is formed into a flat plate shape by a known injection molding method using, for example, a flexible material such as polypropylene or vinyl chloride (an example of a constituent material of the first member). 52 and the second side wall portion 54 are formed by being bent at the bent portion so as to intersect at a substantially right angle. In the present embodiment, the side wall member 51 is molded by injection molding, but is not limited thereto.

  As shown in FIG. 15, a concave portion 57 extending in the vertical direction is provided in the vicinity of the first side wall portion 52 side of the bent portion 56, and the upper and lower sides are provided in the vicinity of the second side wall portion 54 side of the bent portion 56. A concave portion 58 extending in the direction is provided, and the concave shape portion 57 and the concave shape portion 58 are continuously provided via a bent portion 56 having a thinner thickness than other portions.

  The first side wall portion 52 is bent in the direction indicated by the one-dot chain line arrow in FIG. 15 at the bent portion 56, so that the outer surface 58 a of the concave shaped portion 58 is disposed opposite to the bottom surface 57 a of the concave shaped portion 57. The upper surface 58 b of the shape portion 58 is disposed opposite to the inner side surface 57 b of the concave shape portion 57. Thereby, the surface of the water channel wall 53 of the first side wall portion 52 and the surface of the water channel wall 55 of the second side wall portion 54 are flush with each other, and the first side wall portion 52 and the second side wall portion are combined with the throat member 70. A pumping path R1 (see FIG. 3) for an air lift pump having a circular cross section is formed in a vertical direction at a portion where the portion 54 intersects with the portion 54 to form a corner.

  Further, by bending the first side wall portion 52, a fitting protrusion 59 (an example of a convex fitting portion) having a convex cross-sectional shape is formed in the bent portion 56.

  As shown in FIGS. 16 and 17, on the lateral outer surface of the fitting projection 59 on the first side wall portion 52 side, the horizontal linear projection 60 extending in the horizontal direction, the first slope inclined so as to be located higher toward the end side. A plurality of inclined linear protrusions 61 and a plurality of second inclined linear protrusions 62 which are inclined so as to be positioned closer to the end side are provided in the vertical direction. Further, as shown in FIG. 17, vertical ribs 63 extending in the vertical direction are provided at positions adjacent to the horizontal linear protrusions 60, the first inclined linear protrusions 61, and the second inclined linear protrusions 62.

  Two joining ribs 99 extending in the vertical direction are provided on the side surface on the downstream side wall 4 side of the partition wall W2 (an example of the second member), and thereby, the fitting groove 100 (an example of the recessed fitting portion). ) Is formed. In addition, the partition wall W2 is comprised by FRP etc., for example.

  The fitting groove 100 is filled with at least an adhesive capable of adhering to the partition wall W2, and the fitting protrusion 59 of the side wall member 51 is fitted into the fitting groove 100 of the partition wall W2, thereby forming the concave portion 58. The back surface 58c of the fitting groove 99 is in contact with the right joining rib 99 of the fitting groove 100 (the joining rib 99 on the left side in FIG. 17), and the longitudinal rib 63 of the fitting projection 59 is joined to the left side of the fitting groove 100. The rib 99 (the bonding rib 99 on the right side of FIG. 17 on the right side) comes into contact. And the junction part of the fitting protrusion 59 and the fitting groove 100 is formed, and the moving bed filtration tank E and the partition wall W2 join.

  At this time, the adhesive moves so as to wrap around the surface of each of the horizontal linear protrusion 60, the first inclined linear protrusion 61, and the second inclined linear protrusion 62 in the fitting protrusion 59 on the drawing direction side. Leakage from the fitting groove 100 is prevented by providing the vertical rib 63 of the mating protrusion 59.

  The horizontal linear protrusion 60 extends in the drawing direction of the side wall member 51 of the moving bed filtration tank E, and each of the first inclined linear protrusion 61 and the second inclined linear protrusion 62 corresponds to the moving bed filtration tank E. The side wall member 51 is in a state of extending in a direction intersecting the drawing direction. That is, the horizontal linear protrusion 60 extends in the horizontal direction, the first inclined linear protrusion 61 extends so as to approach the partition wall W2 toward the upper side, and the second inclined linear protrusion 62 extends to the partition wall W2 toward the lower side. It will be in the state extended so that it may approach. Thereby, the side wall member 51 of the moving bed filtration tank E has a structure that is not easily detached not only in the drawing direction but also in the vertical direction.

[Other Embodiments]
The shape of the linear protrusion is not limited to the horizontal linear protrusion or the inclined linear protrusion in the above-described embodiment. For example, as shown in FIG. 18, the shape of the linear protrusion 106 is (a) a broken line shape, (b) an inverted “ku” shape, (c) a “ku” shape, (d) a straight shape, e) The shape may be a wave shape or (f) a V shape. In addition, the arrow in a figure shows the extraction direction of a 1st member.

  The shape of the protrusion is not limited to the linear protrusion in the above-described embodiment. For example, as shown in FIG. 19, the shape of the protrusion 107 is (a) circular, (b) elliptical, (c) rectangular, (d) diamond, (e) triangular, (f) star-shaped. An elliptical projection or a polygonal projection may be used. In addition, the arrow in a figure shows the extraction direction of a 1st member.

  In the above-described embodiment, polypropylene or vinyl chloride is used as the material of the first member. However, the material is not limited to this, and may be a material that is difficult to bond with an adhesive, or a material that can be bonded. There may be. Further, the second member may be another material to which an adhesive can be bonded.

  The container which concerns on this invention can be applied not only to a septic tank but to the whole apparatus provided with the structure which performs water treatment, and can also be used for a general water tank.

A Aerobic filter bed tank (an example of the first member)
13 Right-hand fitting piece (an example of a convex fitting part)
23 left fitting piece (an example of convex fitting part)
E Moving bed filtration tank (example of first member)
59 Fitting protrusion (an example of convex fitting part)
W1 partition wall (example of second member)
96 Left side fitting groove (an example of a concave fitting part)
98 Right-side mating groove (an example of a concave mating part)
W2 partition wall (example of second member)
100 fitting groove (an example of a recessed fitting part)

Claims (10)

A first member having a fitting portion across the vertical direction, and a second member having a fitted portion across vertically a container having a joint portion for joining with an adhesive,
The adhesive can be bonded to at least the fitted portion of the second member, and a protrusion is provided on the fitting portion of the first member;
The protrusion is a linear protrusion;
The container, wherein the linear protrusion is at least one of a horizontal linear protrusion extending in a pulling direction of the first member and an inclined linear protrusion extending in a direction crossing the pulling direction of the first member.   At least one of the first inclined linear protrusion that extends so that the inclined linear protrusion approaches the second member toward the lower side and the second inclined linear protrusion that extends toward the second member toward the upper side. The container according to claim 1 which is one side.   The container according to claim 1 or 2, wherein the fitting portion of the first member has a convex shape, and the fitted portion of the second member has a concave shape.   The container according to any one of claims 1 to 3, wherein a material of the first member is different from a material of the second member. A first member having a fitting portion across the vertical direction, and a second member having a fitted portion across vertically a container having a joint portion for joining with an adhesive,
The adhesive can be bonded to at least the fitted portion of the second member, and a protrusion is provided on the fitting portion of the first member;
The protrusion is a linear protrusion;
A container in which the fitting portion of the first member is convex, and linear protrusions are provided on both side surfaces of the fitting portion.   A first inclined linear protrusion is provided on one side surface of the convex fitting portion so as to approach the second member toward the lower side, and a second slope extending toward the second member toward the upper side on the other side surface. The container of Claim 5 provided with a linear protrusion.   A horizontal linear protrusion extending in the drawing direction of the first member, a first inclined linear protrusion extending toward the second member toward the lower side, and an upper side toward the both sides of the convex fitting portion, respectively. The container according to claim 5, further comprising a second inclined linear protrusion extending so as to approach the second member.   The container of any one of Claims 1-7 by which the said adhesive agent is arrange | positioned at the surface at the side of the drawing direction of the projection part of a said 1st member.   The water tank using the container of any one of Claims 1-8.   A septic tank comprising the water tank according to claim 9.

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