JPH0366460B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a water retention passage having an overflow shaft on the inflow end side and an adjustment shaft on the outflow end side, the overflow shaft having at least the inflow passage and the overflow passageway. The present invention relates to a storage and regulating device or apparatus for mixed water of wastewater and precipitation, having a weir and a water discharge passage, said regulating shaft being provided with a regulating or blocking device and a drainage passage.

PRIOR ART AND PROBLEMS Drainage systems are already known in which municipal wastewater and precipitation flow together and are directed as mixed water to a water purification system. The water purification equipment has a limited capacity;
Generally, it can only handle a flow rate that is twice the flow rate during the dry season. For this reason, when the amount of water exceeds the processing capacity of the relevant water purification equipment, the resulting mixed water must be stored, and when the storage capacity is exceeded, the surplus water must be released into rivers, etc. In this connection, water storage regulating devices having the structure described at the beginning are known. Known regulating devices of this type are generally of concrete construction, and the overflow shaft, water retention channel and regulating shaft are constructed as concrete structures on site. However, on-site concrete construction not only requires a large amount of time and space, but also requires large costs in terms of manufacturing technology, and there are problems in that difficult construction conditions are often imposed. For example, due to manufacturing technology reasons,
Only one overflow weir can be built in an overflow shaft. Furthermore, for the same reason, the overflow shaft itself has a structural form that occupies a large amount of space. This is because the required length of the overflow weir is determined by the amount of mixed water to be discharged and the allowable amount of regulated water retention in the water supply passage to which the inflow passage of the water storage adjustment device is connected. The dimensions of this overflow weir greatly influence the space and structural form of the shaft structure. Furthermore, the water retention channel requires a dry water channel to ensure a minimum flow rate or flow rate during dry season drainage. If this is not done, there is a risk that solid matter will adhere or shells will form, which may ultimately cause trouble in the operation of the equipment. The present invention aims to solve such problems.

SUMMARY OF THE INVENTION The object of the invention is to provide a storage and conditioning device for mixed wastewater and precipitation water of the type mentioned at the outset, which is characterized by easy assembly and compact construction even under difficult construction and operating conditions. Our goal is to provide the following.

According to the present invention, in the water storage regulating device mentioned at the beginning, the water retention passage, the overflow shaft, the adjustment shaft, the inflow passage, the water discharge passage and the drainage passage are constructed from pre-manufactured pipe sections, This can be solved by providing a double weir in the overflow shaft so that the mixed water overflows on both sides, or by providing a ring-shaped weir so that the mixed water overflows in a circular shape. The invention is based on the recognition that such a water storage regulating device can be realized in the form of a so-called prefabricated structure. Such a prefabricated structure can be successfully realized in a particularly rational manner by configuring the entire water storage conditioning device uniformly as a tubular structure. The tube sections required for this purpose can easily be produced as prefabricated structural elements at the manufacturing site and assembled in a short time on site using simple machinery. As a result, construction time can be reduced considerably. Furthermore, since the prefabricated tube sections (i.e. prefabricated tube sections) are formed from the same material, they can easily be seamlessly connected to each other, resulting in a compact tube construction installation. . Furthermore, a compact construction form is also achieved in the overflow shaft itself. According to the prefab construction,
This is because the overflow shaft can be equipped with a double weir or a ring-shaped weir, that is, two overflow weirs or one endless overflow weir. In this way, taking into account the amount of mixed water to be discharged, it is possible to correspondingly reduce the cross-section of the shaft considerably and to optimize its construction. The same applies to the regulating shaft in which the regulating devices required for water discharge control are accommodated. However, it cannot be denied that the size of the regulating shaft and its construction are influenced by the regulating device. In short, the assembly is simple and quick, so that a water storage regulating device is realized which is characterized by easy assembly and compact construction. This is where the essential advantage achieved by the invention lies.

Other features of the invention will be described below. If an inspection shaft is interposed between the water retention channel and the regulating shaft, it is advantageous for the inspection shaft to consist of a pipe section which is cross-connected to the outflow end of the water retention channel. In this case, the inspection shaft and the regulating shaft can easily be interconnected via a connecting pipe.
According to an advantageous embodiment of the invention, the tube section is formed from synthetic material or steel, in particular as a rolled synthetic material tube section with a smooth inner surface and a contoured outer surface. It is advantageous to do so.
The smooth inner surface guarantees a minimum flow rate or velocity, even with large pipe cross-sections.
Solids buildup is prevented. Furthermore, there is no fear of shell formation. In fact, in the structure according to the invention, it is possible to omit the dry-season water channel normally provided in the water retention passage. This makes it possible to effectively utilize the entire tube cross section. High-pressure polyethylene is preferred as a material for the synthetic pipe section, since it is inert. Additionally, the tube butt ends can be welded cleanly without solids buildup or shelling at the weld location. The shaped outer surface also contributes to a high stability with regard to the strength or robustness of the pipe section and ultimately of the entire pipework installation.

According to one proposal of the invention which is also significant, the overflow shaft has an inlet channel at a high level, an outlet channel at a low level, and a conical shape extending from the inlet channel to the retention channel. A continuous water guide groove that expands and extends from the bottom of the inflow passage to the bottom of the water retention passage, and is sloped from the bottom of the inflow passage to the bottom of the water retention passage and has a suitable distance from the bottom of the shaft. Double weirs are formed on both edges, that is, two horizontal overflow weirs located at the same height, so that overflow occurs on both sides. As a result, the shaft cross section is approximately 2
can be reduced by a factor of 1. This is because, for a given shaft cross-section, an essentially double-length overflow weir is realized. Advantageously, the highest part of the retention channel, the highest part of the inlet channel and the two overflow weirs of the continuous water channel are at the same height level. A drain groove can be provided at the bottom of the overflow shaft below the continuous water guide groove, crossing the water guide groove and reaching the water discharge passage.
The overflow weir is expediently formed from a tubular member resting on the edge of the channel to prevent solids from accumulating.

Another embodiment of the invention which is also of significance is that the water discharge passage is provided at a high position, and a cylinder with an overflow bottom forming a ring-shaped weir is installed in the overflow shaft, and below the ring-shaped weir. An inflow passage opens into the cylindrical body with an overflowing bottom, and a water retention passage protruding into the overflowing shaft is connected to the cylindrical body with an overflowing bottom, and above the inflow passage and the water retention passage, the overflowing shaft and the overflowing bottom are connected. It is proposed that a ring-shaped partition is provided between the cylindrical body and a ring-shaped passage, and the water discharge passage is connected to the ring-shaped passage. The flooded cylinder is expediently designed as a pipe section cross-connected with the water channel and, like the other structural elements, can be made of synthetic material or of steel. In this case, an almost endless circular overflow is achieved, so that the shaft cross section can likewise be reduced by approximately a factor of two.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention will now be described in detail with reference to the drawings, which illustrate mere embodiments of the invention.

The drawing shows a water storage regulator or installation for mixed water consisting of wastewater and precipitation, which in its basic structure has an overflow shaft 2 at the inlet end and a regulating shaft 2 at the outlet end. A water retention passage 1 having a shaft 3 is provided. In this basic structure, the overflow shaft 2 has at least an inflow passage 4
and, if necessary, a second additional inlet 5 , an overflow weir 6 and a water discharge channel 7 , while the regulating shaft 3 is provided with a blocking or regulating device 8 and an outlet channel 9 . Furthermore, the regulation shaft 3 can be equipped with an emergency drain pipe 10. The water retention passage 1, the overflow shaft 2, the regulating shaft 3, the inflow passage 4, the water discharge passage 7 and the outflow passage 9 are constructed from pre-manufactured pipe sections. In the embodiment shown in FIGS. 1 and 2, the overflow shaft 2 is equipped with double weirs 6a and 6b so that overflow occurs on both sides, and
In the embodiment shown in FIGS. 3 to 5,
A ring-shaped weir 6c is provided so that a circular overflow of mixed water or precipitation occurs. Furthermore, in the illustrated embodiment, an inspection shaft 11 is provided between the water retention passage 1 and the regulating shaft 3. An approach port is provided in this inspection shaft so that the water retaining passage 1 can be regularly inspected. The inspection shaft 11 is composed of a pipe section that intersects with the outflow side end of the water retention passage 1. These tube sections are made of synthetic material or of steel, and in the embodiment shown, said tube sections have a rolled end section of synthetic material with a smooth inner surface 12 and a contoured outer surface 13. It is configured as. This makes it possible to realize a homogeneously welded socket joint, as a result of which a reliable protection against underground contamination is guaranteed. This means that wastewater is prevented from flowing into groundwater or, conversely, from ingress of water from unrelated sources.

In the embodiment shown in FIGS. 1 and 2,
The overflow shaft 2 includes an inflow passage 4 located at a high position, a water discharge passage 7 located at a low position, and a water guide groove 14 extending from the inflow passage 4 to the water retention passage 1 and expanding into a conical shape.
A continuous slope is provided from the deepest part _ET of the inflow passage to the deepest part _ST of the water retention passage, and a corresponding interval is provided between the water guide groove 14 and the bottom 15 of the shaft. It is being That is, the continuous water channel 14 bridges the bottom 15 of the shaft in the form of a vertical bridge,
The two groove edges form horizontal overflow weirs 6a and 6b located at the same height, thereby forming a double weir so that overflow occurs from both sides. The top S _H of the water retention passage, the maximum height position E _H of the inflow passage, and the two overflow weirs 6a and 6b of the water guide groove.
are at the same height. Bottom 15 of overflowing shaft 2
is provided with an outflow groove 16 that intersects with the water guide groove 14 below the water guide groove 14 and reaches the water discharge passage 7 . The overflow weirs 6a, 6b are formed from a pipe member 17 placed on the edge of the water guide groove.

In the embodiment shown in FIGS. 3 to 5,
An overflow cylindrical body 18 with a bottom that forms a ring-shaped weir 6c in the water discharge passage 7 provided at a high position is installed in the overflow shaft 2. The inflow passage 4 opens into the overflowing bottomed cylindrical body 18 below the ring-shaped weir 6c. The water retaining passage 1 protruding into the overflowing shaft 2 also overflows under the ring-shaped weir 6c into the bottomed cylindrical body 1.
8 is connected. Inflow passage 4 and water retention passage 1
Above the overflow shaft 2, a ring-shaped partition 20 is provided between the overflow shaft 2 and the overflow bottomed cylindrical body 18, and a ring-shaped passage 19 is formed. Water discharge passage 7
is connected to this ring-shaped passage 19.
The overflowing bottomed cylindrical body 18 is configured as a pipe portion that intersects with the water retention passage 1.

In the two examples, the flooding situation is schematically indicated by an arrow.

[Brief explanation of drawings]

FIG. 1 is a vertical cross-sectional view of a water storage regulating device according to an embodiment of the present invention, FIG. 2 is a top view showing an overflow shaft of the water storage regulating device shown in FIG. 1, and FIG. A top view of a variant embodiment of the overflow weir, FIG. 4 is a cross-sectional view along the line A--A in FIG. 3, and FIG. 5 is a cross-sectional view along the line B--B in FIG. 1...Water retention passage, 2...Overflow shaft, 3...Adjustment shaft, 4...Inflow passage, 5...Inflow section, 6...Overflow weir, 6a, 6b...Double weir, 6c... Ring-shaped weir, 7... Water discharge passage, 8... Adjustment device, 9...
...Outflow passageway, 10...Emergency drain pipe, 11...Inspection shaft, 12...Inner surface, 13...Outer surface, 14...
Water guide groove, 15...bottom, 16...outflow groove, 17...
... Pipe member, 18 ... Overflowing bottomed cylindrical body, 19 ... Passage, 20 ... Partition wall.

Claims (1)

[Scope of Claims] 1. A water retention passage having an overflow shaft on the inflow end side and an adjustment shaft on the outflow end side, the overflow shaft having at least an inflow passage, an overflow weir, and a water discharge passage. , a water storage regulating device for mixed water of wastewater and precipitation, in which the regulating shaft is provided with a regulating or blocking device and a drainage passage, the water retention passage 1, the overflowing shaft 2, the regulating shaft 3, the inlet passage 4, the water discharge The passage 7 and the drainage passage 9 are constructed from prefabricated pipe sections, and the overflow shaft 2 has double weirs (6a, 6b) or a circle of the mixed water so that overflow of the mixed water occurs on both sides. A water storage regulating device characterized by having a ring-shaped weir 6c so that a shaped overflow occurs. 2. The water storage adjustment according to claim 1, wherein an inspection shaft is provided between the drainage passage and the adjustment shaft, and the inspection shaft 11 is constituted by a pipe section that intersects with the outflow side end of the water retention passage 1. Device. 3. The tube section is constructed of synthetic material or steel, preferably with a smooth inner surface 12 and a shaped outer surface 1.
3. A water storage regulating device as claimed in claim 1 or 2, consisting of a coiled tube section of synthetic material having a diameter of 3. 4. An inflow passage 4 in which the overflow shaft 2 is located at a high position;
A water discharge passage 7 located at a low position extends from the inflow passage 4 to the water retention passage 1 with a slope from the deepest part _ET of the inflow passage to the deepest part _ST of the drainage passage and expands into a conical shape. The water storage according to any one of claims 1 to 3, comprising a water guide groove 14, and both edges of the water guide groove forming horizontal overflow weirs 6a and 6b located at the same height. Regulator. 5 Highest part of water retention passage S _H , highest part of inflow passage E _H
The water storage regulating device according to any one of claims 1 to 4, wherein the two overflow weirs 6a and 6b of the water guide groove 14 are located at the same height. 6. Any one of claims 1 to 5, wherein the shaft bottom 15 of the overflow shaft 2 is provided with an outflow groove 16 that intersects with the water guide groove 14 below the water guide groove 14 and reaches the water discharge passage 7. The water storage regulating device described in . 7. Claim 1, in which the overflow weir 6 is constituted by a tubular member 17 placed on the edge of the water channel.
7. The water storage regulating device according to any one of items 6 to 6. 8. The water discharge passage 7 is provided at a high position, and a cylindrical body 18 with an overflow bottom forming a ring-shaped weir 6c is installed in the overflow shaft 2, and the inflow passage 4 is located below the ring-shaped weir 6c. A water retention passage 1 that opens into the bottom cylindrical body 18 and projects into the overflow shaft 2 is connected to the overflow bottomed cylindrical body 18, and the inflow passage 4
A ring-shaped partition wall 20 is provided above the water retaining passage 1 between the overflowing shaft 2 and the overflowing bottomed cylindrical body 18 to form a ring-shaped passage 19, and the water discharge passage 7
The water storage regulating device according to any one of claims 1 to 3, wherein the ring-shaped passage 19 is connected to the ring-shaped passage 19. 9. The water storage regulating device according to any one of claims 1 to 3 or 8, wherein the overflowing bottomed cylindrical body 18 is configured as a pipe section cross-connected to the water retention passage 1.