JPH1133574A - Disinfection tank overflow weir structure - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To easily install, easily adjust the height of the overflow weir to make it horizontal, and to make the treated water to the disinfection tank satisfactory. And an overflow weir mounting structure. A disinfection tank overflow weir structure comprising an overflow gutter 1, a groove 2, and an overflow weir plate 3, wherein the overflow gutter 1 has a side wall 11 having a lowered central portion and mounting portions on both sides thereof. Consisting of 12,
A treated water inlet 15 is provided on the side wall 13, and the overflow weir plate 3 is composed of a saw blade-shaped plate portion 31 and fixed portions 32 on both sides thereof.
An elongated hole 35 is provided in one of the mounting portion 12 and the fixing portion 32, and a through hole 14 is provided in the other. A packing material 34 is provided between the groove portion 2 and the overflow weir plate 3, and an overflow weir is provided in the groove portion 2. The plate 3 is inserted, and the overflow weir plate 3 is fixed to the long hole 35 and the through hole 14 with bolts and nuts so as to be able to move up and down along the side wall portion 11. It is what is being done.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overflow weir mounting structure for a septic tank for treating wastewater or the like.

[0002]

2. Description of the Related Art Conventionally, in a septic tank which performs sewage treatment, sewage treatment is performed by a sedimentation separation chamber or a contact aeration chamber formed in a tank body, and the treated water treated is treated with water. From the vicinity, the water gradually flows through the treated water inflow port into a disinfecting tank provided in the tank body, is disinfected in the disinfecting tank, and is then drained. And, in order to make the treated water located near the water surface gradually flow into the disinfection tank, the notches of the overflow weirs are arranged so as to be adjacent to each other in a horizontal state, and the overflow weirs are placed in a horizontal state. It is desirable that the height can be adjusted. As such an overflow weir mounting structure, one disclosed in Japanese Utility Model Laid-Open No. 4-114495 is known. In this overflow weir mounting structure, a treated water inlet and a flow path forming body are provided in front of a disinfecting chamber installed in a tank body, and an overflow gutter is extended from a tip of the flow path forming body to both sides. The upper end of this overflow gutter was cut off to form a saw blade overflow weir, and the front end of the overflow gutter was fixed to a non-movable part in the tank body adjacent to the overflow gutter so as to be adjustable in position. It is also.

[0003] In this overflow weir mounting structure, the treated water in the tank body gradually flows into the overflow gutter from a saw blade-shaped overflow weir with the upper end of the overflow gutter cut off, and the overflow gutter and the flow path are formed. It flows into the disinfection tank through the treated water inlet through the body and is drained after disinfection. And while the overflow weir part confirms the horizontal state,
Position adjustment can be performed by aligning the overflow gutter horizontally and fixing the overflow gutter to the non-movable part.

[0004]

However, in the overflow weir mounting structure described in Japanese Utility Model Application Laid-Open No. 4-114495, the end of the overflow gutter is adjusted up and down to allow the overflow at the upper end of the overflow gutter. The horizontal position of the weir is adjusted. However, since the overflow gutter and the flow path forming body are integrally formed, if one end of the overflow gutter is pryed, the overflow gutter or the flow path is formed. The passage forming body is deformed, and an excessive force is applied to the overflow gutter or the passage forming body, which may be damaged during use, which is a problem. Also, since the overflow gutter has a box shape and the flow path forming body is integrated,
There is a problem that the height adjustment margin is small vertically and it is difficult to perform uniform adjustment. Therefore, an object of the present invention was made in view of the above-mentioned problem, and the mounting of the overflow weir portion was easy, and the height of the overflow weir portion could be easily adjusted. It is an object of the present invention to provide an overflow weir mounting structure that enables good water to flow.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to achieve the above object, and has an overflow gutter communicating with a disinfecting tank in a tank body and a disinfecting tank of the overflow gutter. A groove opening upward along the overflow gutter at the lower end of the side wall outer periphery,
A disinfecting tank overflow weir structure comprising an overflow weir plate inserted into the groove, wherein the overflow gutter has a side wall portion having a lower central portion on the side facing the disinfecting tank; The upper part of the overflow gutter is closed at both ends, and both ends of the overflow gutter are closed. The upper part of the plate has a notched saw-shaped plate part, and a fixing part projecting upward on both sides of the plate part. Either a long hole and a through hole are provided on the other, and between the inner wall surface of the groove and the surface of the overflow weir plate, along the longitudinal direction of the groove, one or more packing materials are provided,
The overflow weir plate is inserted into the groove, and the overflow weir plate is fixed to the long hole and the through-hole with bolts and nuts so that the overflow weir plate can move up and down along the side wall at the center of the overflow gutter. The groove is made water-tight by a packing material between the inner wall surface of the slab and the surface of the overflow weir plate.

The cross-sectional shape of the overflow gutter in the present invention, which is perpendicular to the longitudinal direction, is such that the treated water in the tank main body gradually flows into the overflow gutter from the side wall portion whose central portion on the side facing the disinfection tank is lowered. An appropriate shape may be used as long as it can flow gradually into the disinfection tank from the treated water inlet through the overflow gutter.
A letter shape is preferred because it is simple. Further, the cross-sectional shape orthogonal to the longitudinal direction of the groove provided at the lower end of the side wall outer periphery of the overflow gutter may have any appropriate shape as long as the overflow weir plate can be inserted from above. ,
It is preferable because it is simple.

Between the inner wall surface of the groove and the surface of the overflow weir plate,
Along the longitudinal direction of the groove, one or more packing materials are provided, but the mounting shape of the packing material, if an overflow weir plate is inserted into the groove, if the groove can be made watertight with the packing material, An appropriate shape may be used.For example, at least one locking recess is provided on the lower end surface of the overflow weir plate along the longitudinal direction of the overflow weir plate, and a packing material is fitted into this locking recess. This is preferable because the structure is simple. Further, one or more locking recesses may be provided on the inner wall surface of the groove along the longitudinal direction, and a packing material may be fitted into the locking recesses. Furthermore, when a locking recess is provided on both surfaces of the inner wall surface of the groove portion or the lower end surface of the overflow weir plate, and a packing material is fitted into the locking recess, the packing material provided on both surfaces is provided. Is preferable because the inside of the groove can be made more watertight.

A groove for inserting an overflow weir plate is provided at the lower end of the side wall of the overflow gutter opposite to the disinfecting tank, and the groove is provided near the overflow gutter opposite to the disinfecting tank. If this is the case, the groove may be provided by an appropriate method. For example, it is preferable from the viewpoint of aesthetics to make the overflow gutter and the groove adjacent to each other and integrally form them by injection molding. Alternatively, the overflow gutter and the groove may be separately formed by an injection molding method, and the overflow gutter and the groove may be bonded by post-processing.

The cross-sectional shape of the locking recess and the packing material may be any suitable shape as long as the packing material does not easily come off from the locking recess and can be made watertight with the packing material. If the packing material has the same shape and the lateral length of the packing material is longer than the depth of the locking recess, the packing material does not come off from the locking recess, and the locking recess Packing material protrudes from the surface of the
It is preferable because the watertightness can be achieved at the protruding portion.

As for the material of the overflow gutter, groove and overflow weir plate of the present invention, strong oxidants such as calcium hypochlorite and isocyanuric acid are used. Any suitable synthetic resin can be used as long as it can withstand the agent. For example, a hard vinyl chloride resin is preferable because it is inexpensive. Also, as for the material of the packing material, similarly, since the disinfectant which is the above-mentioned strong oxidizing agent is used,
Any synthetic rubber that can withstand these strong oxidizing agents may be used as appropriate, for example, fluorine rubber, butyl rubber, ethylene-propylene rubber, silicone rubber, acrylic rubber, urethane rubber, hypalone rubber, epichlorohydrin rubber, and the like. A synthetic rubber having a Shore hardness of 40 to 60 is preferable because of excellent aging resistance and chemical resistance.

(Function) In the disinfecting tank overflow weir structure of the present invention,
An overflow gutter communicating with the disinfecting tank in the tank body, a groove opening upward along the overflow gutter at the lower end of the side wall outer peripheral side of the overflow gutter facing the disinfecting tank, and inserted into the groove. Since it is composed of an overflow weir plate, by inserting the overflow weir plate into the groove adjacent to the overflow gutter, a disinfection tank overflow weir structure that can be easily installed can be obtained.

The overflow gutter includes a side wall portion having a lowered central portion on the side facing the disinfection tank, and mounting portions projecting upward on both sides of the lowered side wall portion. Both ends of the overflow gutter are closed, and a treated water inlet is provided on the side wall substantially at the center of the disinfection tank, and the overflow weir plate has a saw-tooth-shaped plate portion with a cut-out upper end at the center, and this plate portion. A fixing portion protruding upward on both sides of the fixing member, and a long hole and a through hole are provided on one of the mounting portion of the overflow gutter and the fixing portion of the overflow weir plate, and the through hole is provided. The overflow weir plate is fixed to the hole and slot with bolts and nuts so that the overflow weir plate can move up and down along the central side wall of the overflow gutter, so loosen the bolts and nuts,
The overflow weir plate is moved up and down along the side wall at the center of the overflow gutter, and only the overflow weir plate is aligned in a horizontal state. Therefore, the overflow gutter and the treated water inflow portion are not deformed by an extra force and are not damaged.

[0013] Further, one or more packing materials are provided along the longitudinal direction of the groove between the inner wall surface of the groove and the surface of the overflow weir plate, and the overflow weir plate is inserted into the groove. Since the groove is made watertight by the packing material between the inner wall surface of the wall and the surface of the overflow weir plate, treated water enters the overflow gutter from between the inner wall surface of the groove and the surface of the overflow weir plate. And the treated water located near the water surface gradually flows from the notched saw blade at the upper end of the overflow weir plate to the overflow gutter and flows into the disinfection tank from the treated water inlet through the flow path forming body. Can be.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. 1 (a) is a perspective explanatory view of the disinfecting tank overflow weir structure, (b) is a perspective explanatory view of the overflow weir plate, and (c) is a case where the overflow weir plate is inserted into the groove, and the groove is watertight with packing material. FIG. 5 is an enlarged explanatory view showing the state of the first embodiment.

In FIG. 1, a disinfecting tank overflow weir structure comprises an overflow gutter 1 communicating with a disinfecting tank 8 in a tank body, and the overflow gutter 1.
At the lower end of the outer periphery of the side wall on the side opposite to the disinfecting tank 8, there is formed a groove 2 having an upper opening along the overflow gutter 1 and an overflow weir plate 3 inserted into the groove 2. The overflow gutter 1, the groove 2, and the overflow weir plate 3 are all made of synthetic resin (polyvinyl chloride resin), and the overflow gutter 1, the groove 2, and the flow path forming body 6 are integrally formed by an injection molding method. ing. Further, the overflow weir plate 3 is also separately made by an injection molding method.

The overflow gutter 1 is a laterally long box-like body (width of about 60 mm, length of about 700 mm) having an open upper part, and a side wall part 11 having a lower central part facing the disinfection tank 8; Mounting portions 12 and 12 projecting upward from both sides of the lowered side wall portion 11 are provided. Both ends of the overflow gutter 1 are closed, and the treated water flow Entrance 1
5 are provided. The through holes 14 are provided at substantially the center of the upper ends of the mounting portions 12.

A groove 2 having an upper opening along the overflow gutter 1 is provided at the lower end of the outer peripheral wall of the overflow gutter 1 opposite to the disinfecting tank 8. The width of the groove 2 is about 10 mm, and the length is almost the same as the overflow gutter 1.

The overflow weir plate 3 is a plate-like body having a thickness of about 8 mm and a length slightly shorter than the length of the overflow gutter 1. The overflow weir plate 3 has a saw blade-shaped plate portion 31 with a central upper end notched. Fixed portions 32, 32 projecting upward on both sides of the plate portion 31 are provided with elongated holes 35, 35 substantially at the center of the upper ends of the fixed portions 32, 32 of the overflow weir plate 3. The two locking recesses 33, 33 are provided from the central portion of one fixing portion 32 of the overflow weir plate 3 through the lower end of the overflow weir plate 3 to the central portion of the other fixing portion 32.
Are provided in parallel at intervals of about 10 mm. The locking recesses 33 are shaped so that the inner part is larger than the inlet part.

Both ends of the locking recesses 33, 33 are located above the sawtooth-shaped valley bottom of the plate portion 31 of the overflow weir plate 3, and the entire locking recesses 33, 33 Packing members 34, 3 of a shape conforming to the shapes of the locking recesses 33, 33
The packing members 34, 34 are made of silicon rubber, and protrude from the surface of the overflow weir plate 3 by about 3 mm.

The overflow weir plate 3 is pressed into and inserted into a groove 2 provided at the outer peripheral lower end of the side wall of the overflow gutter 1, and the groove 2 is made water-tight by the packing materials 34, 34, and the overflow gutter 1 is Through hole 1
A bolt is inserted into the slot 4 and the slot 35 of the overflow weir 3, and a nut is screwed into the bolt, so that the overflow weir 3 can move up and down along the central side wall of the overflow gutter 1. So that it is fixed.

A flow path forming member 6 is provided between the treated water inlet 15 of the overflow gutter 1 and the disinfecting tank 8, and a cylinder containing a disinfectant is placed on the flow path forming member 6, The cylindrical body is supported by a support plate, and the cylindrical body stands upright.

Next, the construction method and operation of the embodiment of the present invention will be described. First, the flow path forming body 6 integrally formed with the groove 2 and the overflow gutter 1 is attached to the disinfection tank 8 by flanging and packing. Next, while supporting the cylinder containing the disinfectant on the flow path forming body 6 with the support plate, the cylinder is set up substantially vertically. Next, the locking recess 3 of the overflow weir plate 3
The packing materials 34, 34 are fitted into the grooves 3, 33, and the overflow weir plate 3 to which the packing materials 34, 34 are attached is pressed into the groove 2 and inserted. Next, a bolt is inserted into the through hole 14 of the overflow gutter 1 and the elongated hole 35 of the overflow weir plate 3, and a nut is screwed into the bolt, so that the mounting portion 12 of the overflow gutter 1 and the overflow weir plate 3 Is fixed to the fixing portion 32.

Next, water is poured to a predetermined position in the tank body, and the mounting portion 12 of the fixed overflow gutter 1 and the overflow weir plate 3 are fixed.
The bolts and nuts of the fixing portion 32 are loosened, and the overflow weir plate 3 is moved up and down along the central side wall of the overflow gutter 1 so that only the overflow weir plate 3 is aligned in a horizontal state. I do.

In this manner, the overflow gutter 1 communicated with the disinfection tank 8 in the tank body and the overflow gutter 1 is provided at the lower end of the outer peripheral wall of the overflow gutter 1 on the side opposite to the disinfection tank 8. And the overflow weir plate 3 inserted into the groove 2, so that the overflow weir plate 3 is inserted into the groove 2 adjacent to the overflow gutter 1, so that mounting is easy. It is possible to have a disinfecting tank overflow weir structure.

Further, through holes 14, 14 are provided in the mounting portions 12, 12 on both sides of the side wall portion 11 of the overflow gutter 1, and the overflow weir plate 3 is provided.
Slots 35, 35 on both sides of the plate portion 31 of the
A bolt is inserted into the through holes 14 and the elongated holes 35 and a nut is screwed into the bolt, and the overflow weir plate 3 is moved up and down along the central side wall of the overflow gutter 1. Since it is fixed so that it can move, the bolts and nuts are loosened, and the overflow weir plate 3 is moved up and down along the central side wall of the overflow gutter 1 so that the overflow weir plate is moved. Only three can be positioned horizontally. for that reason,
Excessive force is applied to the overflow gutter 1 and the treated water inflow portion 14 to prevent deformation and damage.

Also, two locking recesses 33, 33 extend from the central portion of one fixed portion 32 of the overflow weir plate 3 to the central portion of the other fixed portion 32 through the lower end of the overflow weir plate 3. About 10mm interval
The locking recesses 33, 33 are provided in parallel so that both ends of the locking recesses 33, 33 are positioned above the saw-toothed valley bottom of the plate portion 31 of the overflow weir plate 3. Packing materials 34, 34 are fitted into the
Since the groove 2 is made watertight at 4, the treated water does not enter the overflow gutter 1 from between the inner wall surface of the groove 2 and the surface of the overflow weir plate 3, and the treated water located near the water surface is reduced. The water can gradually flow from the notched saw blade at the upper end of the overflow weir plate 3 to the overflow gutter 1 and flow from the treated water inlet 14 through the flow path forming body 6 into the disinfection tank 8.

Next, another embodiment of the disinfecting tank overflow weir structure will be described with reference to FIG. FIG. 2 is an enlarged explanatory view showing a state in which the lower end of the overflow weir plate and the upper end of the inner surface of the side wall of the groove are connected by a packing material, and the groove is watertight.

The structure of the packing material is different from that of the disinfecting tank overflow weir structure shown in FIG. 1 only in that the packing material is connected to the lower end portion of the overflow weir plate and the upper end portion of the inner surface of the side wall of the groove. Except for the following structure and operation, the structure, the method of use, and the operation are almost the same. Therefore, only the difference will be described, and the other description will be omitted.

In FIG. 2, the overflow weir plate 3a is a plate-like body having a thickness of about 5 mm and a length slightly shorter than the length of the overflow gutter 1. Plate part 31a
And fixed portions 32a, 32a protruding upward on both sides of the plate portion 31a. An elongated hole 35a is formed substantially at the center of the upper end portion of the fixed portion 32a, 32a of the overflow weir plate 3a.
35a is provided.

The packing material 34a is made of silicone rubber.
The cross-sectional shape of the central portion is bent in the shape of a folding door, and both ends of the packing material 34a are protruded upward, and have a U-shape in plan view. This packing material 34a
By the cross-sectional shape of the central part being bent like a folding door,
It is designed so that it can be stretched about 20 mm by pulling lightly.

The inner ends of both ends of the U-shaped packing member 34a and the inner side surface of the upper end of the center are formed by the overflow weir plate 3.
The lower ends of the long holes 35a, 35a of the fixing portions 32a, 32a and the outer surface of the lower end portion of the central portion are bonded to each other, and the ends of both ends of the packing material 34a are attached to the central portion of the overflow weir plate 3a. Approximately 30 mm from the bottom of the sawtooth-shaped valley where the upper end of the portion 31a is notched
It is made to come to a high position. This packing material 3
The outer ends of both ends of the 4a and the outer surface of the lower end of the central portion are adhered to the inner surface of the outer wall of the groove 2 and the inner surface of the lower end of the central portion, and the groove 2 is made watertight. ing.

A bolt is inserted into the through hole 14 of the overflow gutter 1 and the elongated hole 35a of the overflow weir plate 3a, and a nut is screwed into the bolt, so that the overflow weir plate 3a is located at the center of the overflow gutter 1. It is fixed so that it can move up and down along the side wall.

Next, the construction method and operation of another embodiment of the present invention will be described. An adhesive is applied to the inner end of both ends of the packing material 34a and the inner side surface of the upper end of the central portion, and the inner ends of both ends of the packing material 34a are overflowed to the overflow weir plate 3.
The lower surface of the fixing portions 32a, 32a is adhered to the lower portions of the long holes 35a, 35a, and the inner surface of the upper end of the center of the packing material 34a is adhered to the outer surface of the lower end of the center of the overflow weir 3a.

Next, an adhesive is applied to the opposing surface at the other end of the packing material 34a bonded to the overflow weir plate 3a. The overflow weir plate 3a coated with this adhesive is inserted into the groove 2
And glue the outer ends of both ends of the packing material 34a to the inner surface outside of the outer wall of the groove 2 so that the packing material 34a
Is bonded to the inner surface of the lower end of the center of the groove 2.

Next, the through hole 14 of the overflow gutter 1 and the overflow weir plate 3
A bolt is inserted into the long hole 35a, and a nut is screwed into the bolt to fix the mounting portion 12 of the overflow gutter 1 and the fixing portion 32a of the overflow weir plate 3a.

Next, water is poured to a predetermined position in the tank body, and the mounting portion 12 of the fixed overflow gutter 1 and the overflow weir plate 3 are fixed.
The bolts and nuts of the fixing portion 32a are loosened, and the overflow weir plate 3a is moved up and down along the central side wall of the overflow gutter 1 so that only the overflow weir plate 3a is aligned in a horizontal state. do.

In this way, the side wall 11 of the overflow gutter 1
Through holes 14, 14 are provided in the mounting portions 12, 12 on both sides of the overflow weir plate 3a, and the fixing portions 32a,
32a are provided with long holes 35a, 35a, and through holes 14,
A bolt is inserted into the slot 14 and the long holes 35a, 35a, a nut is screwed into the bolt, and the overflow weir plate 3a is fixed so as to be able to move up and down along the central side wall of the overflow gutter 1. The bolts and nuts are loosened, and the overflow weir plate 3
By moving a vertically along the central side wall of the overflow gutter 1, only the overflow weir plate 3a can be positioned in a horizontal state. Therefore, only the overflow weir plate 3a can be aligned in a horizontal state, and thus the overflow gutter 1 and the treated water inlet portion 14 are not deformed by excessive force and are not damaged.

The inner ends of both ends of the U-shaped packing material 34a and the inner side surface of the upper end of the center are formed with the lower portions of the long holes 35a, 35a of the fixing portions 32a, 32a of the overflow weir plate 3a. ,
The packing material 34 is adhered to the outer surface of the lower end of the central portion.
The tip of both ends of the plate part 31 is a plate part 31 at the center of the overflow weir plate 3a.
The upper end of the packing material 34a is positioned about 30 mm higher than the notched saw-shaped valley bottom, and the outer ends of both ends of the packing material 34a and the outer surface of the lower end of the center part are outside the groove 2. Since the groove 2 is water-tightly bonded to the outside of the inner surface of the wall and the inner surface of the lower end of the center, the treated water overflows between the inner wall surface of the groove 2 and the surface of the overflow weir plate 3a. The treated water located near the water surface without flowing into the downspout 1 is overflowed by the overflow weir plate 3a.
Can be gradually flown from the notched saw blade at the upper end to the overflow gutter 1 and flow into the disinfection tank 8 from the treated water inlet 14 through a flow path forming body (not shown).

Although the embodiment of the present invention has been described with reference to the drawings, the specific configuration is not limited to this embodiment, and even if there is a design change or the like within a range not departing from the gist of the present invention. Included in the invention. For example, as shown in FIG. 3, two protrusions 4 are formed in the groove 2, one size smaller than the groove 2, made of an elastic body, opened at the top, and formed on the inner wall surface.
Is fitted, the inner peripheral surface of the groove 2 is bonded to the outer peripheral surface of the groove 2a, and the overflow weir plate 3a is pressed and inserted into the groove 2a. May be made watertight.

[0040]

As described above, according to the present invention,
In the disinfecting tank overflow weir structure of the present invention, the overflow gutter communicating with the disinfecting tank in the tank body, and the overflow gutter is formed along the overflow gutter at the lower end of the side wall outer periphery of the overflow gutter facing the disinfecting tank. Consists of a groove with an opening and an overflow weir plate inserted into this groove.By inserting the overflow weir plate into the groove adjacent to the overflow gutter, the disinfection tank overflow weir structure is easy to install. Can do it.

The overflow gutter is composed of a side wall having a lowered central portion on the side facing the disinfection tank, and mounting portions projecting upward on both sides of the lowered side wall. Both ends of the overflow gutter are closed, and a treated water inlet is provided on the side wall substantially at the center of the disinfection tank, and the overflow weir plate has a saw-tooth-shaped plate portion with a cut-out upper end at the center, and this plate portion. A fixing portion protruding upward on both sides of the fixing member, and a long hole and a through hole are provided on one of the mounting portion of the overflow gutter and the fixing portion of the overflow weir plate, and the through hole is provided. The overflow weir plate is fixed to the hole and slot with bolts and nuts so that the overflow weir plate can move up and down along the central side wall of the overflow gutter, so loosen the bolts and nuts,
The overflow weir plate is moved up and down along the side wall at the center of the overflow gutter, and only the overflow weir plate is aligned in a horizontal state. Therefore, the overflow gutter and the treated water inflow portion are not deformed by an extra force and are not damaged.

One or more packing materials are provided along the longitudinal direction of the groove between the inner wall surface of the groove and the surface of the overflow weir plate, and the overflow weir plate is inserted into the groove. Since the groove is made watertight by the packing material between the inner wall surface of the wall and the surface of the overflow weir plate, treated water enters the overflow gutter from between the inner wall surface of the groove and the surface of the overflow weir plate. The treated water located near the water surface gradually flows from the notched saw blade at the upper end of the overflow weir plate to the overflow gutter, and flows into the disinfection tank from the treated water inlet through the flow path forming body. be able to.

[Brief description of the drawings]

FIG. 1A is a perspective explanatory view of a disinfecting tank overflow weir structure,
(B) is an explanatory perspective view of the overflow weir plate, and (C) is an enlarged explanatory view showing a state in which the overflow weir plate is inserted into the groove and the groove is made watertight with a packing material.

FIG. 2 is an enlarged explanatory view showing a state in which the lower end of the overflow weir plate and the upper end of the inner surface of the side wall of the groove are connected by a packing material, and the groove is watertight.

FIG. 3 shows a state in which a groove made of an elastic body which is slightly smaller than the groove is fitted into the groove, two projections are provided on both inner wall surfaces of the groove, and the groove is watertight. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Overflow gutter 11 Side wall part 12 Attachment part 13 Side wall 14 Through-hole 15 Treated water inlet 2 Groove part 2a Groove body 3, 3a Overflow weir plate 31, 31a Plate part 32, 32a Fixing part 33 Locking concave part 34, 34a Packing material 35, 35a Long hole 4 Projection 6 Flow path forming body 8 Disinfection tank

Claims (1)

[Claims] An overflow gutter communicating with a disinfecting tank in the tank body; a groove having an upper opening along the overflow gutter at a lower end of an outer peripheral side wall of the overflow gutter facing the disinfecting tank; A disinfecting tank overflow weir structure comprising an overflow weir plate inserted into the groove, wherein the overflow gutter has a side wall portion having a lowered central portion on a side facing the disinfecting tank; It consists of mounting parts protruding upward on both sides of the part, both ends of the overflow gutter are closed, and a treated water inlet is provided on the side wall substantially at the center disinfection tank side, The overflow weir plate, It consists of a saw-toothed plate with a notched upper end at the center, and fixed parts protruding upward on both sides of this plate. The attachment part of the overflow gutter and the fixed part of the overflow weir plate A long hole and a through hole in the other, between the inner wall surface of the groove and the surface of the overflow weir plate, along the longitudinal direction of the groove. The above-mentioned packing material is provided, the overflow weir plate is inserted into the groove, and the overflow weir plate can be moved up and down along the central side wall of the overflow gutter with bolts and nuts in the long holes and through holes. A disinfecting tank overflow weir structure fixed so as to be movable, wherein the groove is made watertight with a packing material between the inner wall surface of the groove and the surface of the overflow weir plate.