JPH09189070A - All-directional invert-equipped bottom plate and invert block for sewerage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow working well with varying relative positioning of a flow-in pipe and flow-out pipe. SOLUTION: A fit-in step 2 is provided to bear a block in the form of an aside facing angle (a) upon fitting at the oversurface of the peripheral edge of a disc-shaped bottom plate 1, and on the oversurface of the inside of this fit-in step a water conduit 3 in rising curved section having a flat flow-path base surface 3' is ring-shapedly installed along the inner wall of the block, and the height of the flow-path base surface of the water conduit 3 is formed in a natural flow gradient as lowering from one place gradually to the left and right circumferential directions in the opposing condition.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an invert provided at the bottom of a manhole used for sewerage.

[0002]

2. Description of the Related Art The invert provided at the bottom of a manhole for collecting and discharging domestic wastewater and rainwater discharged from each household is an invert or outflow pipe whose diameter, angle and number are Since they differ depending on the installation conditions and are not constant, the operator had to carry out on-site construction according to the situation of the site each time, but in this work, the inflow pipe and the outflow pipe were connected with a smooth circular curve while connecting them with a semicircular groove. Since it is necessary to form a water conduit so that drainage and rainwater can be led out naturally, it was a laborious task that required a high level of skill. Further, there is a drawback that it takes time to cure concrete and work efficiency is poor. The inventor has a technical problem to provide a manhole bottom plate with an invert and an invert block for sewers which solve this problem.

[0003]

The gist of the present invention will be described with reference to the accompanying drawings.

A fitting step portion 2 is provided on the upper surface of the outer peripheral edge of the disc-shaped bottom plate 1 to receive and support the body block a, and the inner surface of the fitting step portion 2 has a circumference along the inner wall of the body block. The sewerage is characterized in that the headrace 3 is provided in the shape of a line, and the height of the bottom surface 3'of the headrace 3 is formed in a natural running water gradient that gradually decreases from one location to the opposite direction in the left-right circumferential direction. It relates to an omnidirectional-compatible inversion bottom plate.

Further, a fitting step portion 2 for fitting and supporting the body block a is provided on the upper surface of the outer peripheral edge of the disc-shaped bottom plate 1, and the inner surface of the fitting block portion 2 is provided along the inner wall of the body block on the upper surface. A water conduit 3 having a flat flow path base surface 3 "and having a rising curved shape in cross section is provided in a ring shape, and the height of the water flow conduit base surface 3" of this water conduit 3 is opposed to the left and right circumferential directions from one location. The present invention relates to an omnidirectional invertible bottom plate for sewage, which is characterized by forming a gradually decreasing natural running water gradient.

Further, an invert block for sewerage, which is attached in a superposed state on the upper surface of a disk-shaped bottom plate b which is fitted and supported by the upper surface of the outer peripheral edge, the upper surface of the invert block The water conduit 3 is circumferentially provided along the inner wall of the block, and the height of the bottom surface 3'of the water conduit 3 is formed in a natural running water gradient that gradually lowers from one place in the left and right circumferential directions to face each other. The present invention relates to an omnidirectional-compatible invert block for sewers.

Further, an invert block for sewerage, which is attached to the upper surface of a disk-shaped bottom plate b which is fitted and supported by the upper surface of the outer peripheral edge and which is superposed on the upper surface of the invert block. A water conduit 3 having a flat cross section rising curved shape having a flat flow path base surface 3 "is provided along the inner wall of the block in a ring shape, and the height of the water flow path base surface 3" of this water guide path 3 is set from one place to the left and right circumferences. The present invention relates to an omnidirectional-compatible invert block for sewers, characterized in that it is formed in a natural flowing water gradient that gradually decreases so as to face each other.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to the drawings, which are examples of embodiments, showing the functions and effects.

An embodiment of the invention of claim 1 will be described.

The bottom plate 1 is installed so that the lowest flow path surface of the bottom surface 3'of the headrace 3 matches the outflow height and the outflow direction of the outflow pipe c, and an inlet is provided at a predetermined position on this lowest flow path surface. Match the outlets of the body block a having the outlet, set the body block a on the bottom plate 1, connect the inflow pipe d and the outflow pipe c to the inlet and the outlet of the body block a, and then A gap between the block a and the bottom slab 1, a block a, and an inflow pipe d,
A filling material such as mortar is packed and fixed between the outflow pipes c.

When drainage or rainwater flows into the manhole from the inflow pipe d, the outflow pipe c connected to the lowest part of the bottom slab 1
Since the drainage and rainwater are more naturally discharged, the inflowing drainage and rainwater remain in the manhole regardless of the inflow direction of the inflow pipe d and the number of inflow pipes d is plural. Since it flows out from the outflow pipe c without any need, the complicated invert molding work like the conventional flat disk bottom slab is eliminated, and the work efficiency is remarkably improved. It will be a bottom version with invert.

An embodiment of the invention of claim 2 will be described.

The lowest flow path surface of the flow path base surface 3 "is the outlet pipe c.
The bottom slab 1 is installed in accordance with the outflow height and the outflow direction, and the outflow port of the body block a having an inflow port and an outflow port at a predetermined position is aligned with this lowest flow path surface. After setting and connecting the inflow pipe d and the outflow pipe c to the inflow port and the outflow port of the metal block a, the gap between the metal block a and the bottom plate 1 and the space between the metal block a and the inflow pipe d, the outflow pipe c Fill the mortar with a filler and fix it.

When drainage water or rainwater flows into the manhole from the inflow pipe d, a kind of centrifugal force acts on the inflowing drainage water or rainwater by the flat flow path base surface 3 "provided in the water conduit 3 to form a layered flow. Therefore, since it smoothly and naturally flows out from the outflow pipe c connected to the lowest part of the bottom slab 1, even if the inflow direction of the inflow pipe d is any direction, the number of the inflow pipes d is plural. In addition, since the inflowing drainage and rainwater flow out from the outflow pipe c without staying in the manhole, the labor-saving invert molding work like the conventional flat disc bottom slab is eliminated and the work efficiency is significantly improved. It is a bottom plate with an omnidirectional invert for sewerage that demonstrates its practicality.

An embodiment of the invention of claim 3 will be described.

The bottom board b so that the lowest flow path surface of the flow path bottom surface 3'of the headrace 3 matches the outflow height and the outflow direction of the outflow pipe c.
An invert block is attached to the upper surface of the invert block, and the inflow block of the incubator block a having the inflow port and the outflow port is aligned with the lowest flow path surface of the invert block, and the inversion block is set on the bottom plate b. After connecting the inflow pipe d and the outflow pipe c to the inflow port and the outflow port of the cube block a, a gap between the cube block a and the invert block and a mortar or the like between the cube block a and the inflow pipe d, the outflow pipe c. Fill and fix the filler.

When drainage or rainwater flows into the manhole from the inflow pipe d, drainage or rainwater naturally flows out from the outflow pipe c connected to the lowest part of the invert block.
In addition to the time-consuming invert molding work which is required in the conventional flat disc-shaped bottom plate b, the work efficiency is remarkably improved, and the inflow of the inflow pipe d by using the mass produced conventional flat disc-shaped bottom plate b. Excellent practicability, regardless of the direction and the number of inflow pipes d, allows the inflow of drainage and rainwater to flow out of the outflow pipe c without being retained in the manhole. It will be an omnidirectional invert block for sewers that exhibits

An embodiment of the invention of claim 4 will be described.

The lowest flow path surface of the flow path base surface 3 "is the outflow pipe c.
The invert block is attached to the upper surface of the bottom plate b so as to match the outflow height and the outflow direction, and the outflow port of the body block a having the inflow port and the outflow port is aligned with the lowest flow path surface of this invert block. After setting the lever block a on the bottom plate b and connecting the inflow pipe d and the outflow pipe c to the inflow port and outflow port of the water block a, the gap between the water block a and the invert block and the water block a are formed. Inflow pipe d,
A filling material such as mortar is packed and fixed between the outflow pipes c.

When drainage or rainwater flows into the manhole from the inflow pipe d, the inflowing drainage or rainwater is subjected to a kind of centrifugal force by the flat flow passage base surface 3 "provided in the headrace 3 to form a layered flow. Since it will be smoothly discharged from the outflow pipe c connected to the lowest part of the invert block,
In addition to the time-consuming invert forming work of the conventional flat disc-shaped bottom plate b, the work efficiency is remarkably improved, and the inflow of the inflow pipe d by using the mass produced conventional flat disc-shaped bottom plate b. Excellent practicability, regardless of the direction and the number of inflow pipes d, allows the inflow of drainage and rainwater to flow out of the outflow pipe c without being retained in the manhole. It will be an omnidirectional invert block for sewers that exhibits

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The accompanying drawings show an example of a preferred embodiment of the present invention, in which a disc-shaped bottom plate 1 is provided with a fitting step portion 2 on which a body block a is fitted and supported on an upper surface of an outer peripheral edge thereof. A water conduit 3 is circumferentially provided along the inner wall of the body block on the upper surface on the inner side of the fitting step portion 2, and the height of the water channel bottom surface 3'of this water conduit 3 is set from one location to the left and right circumferential directions. It forms a natural running water gradient that gradually decreases toward the opposite side.

Further, a fitting step portion 2 for fitting and supporting the body block a is provided on the upper surface of the outer peripheral edge of the disk-shaped bottom plate 1, and the inner surface of the fitting block portion 2 is provided along the inner wall of the body block. A water conduit 3 having a flat flow path base surface 3 "and having a rising curved shape in cross section is provided in a ring shape, and the height of the water flow conduit base surface 3" of this water conduit 3 is opposed to the left and right circumferential directions from one location. It forms a natural running water gradient that gradually decreases.

According to the first aspect of the present invention, the illustrated water conduit 3 is formed on the inner upper surface of the fitting step portion 2, for example, an elliptic line or a parabolic line having a rising curve in cross section along the inner wall of the base block body block as shown in FIG. A water guiding groove having a cross-section such as a shape or other quadratic curve shape so that drained water or sewage that has flowed in can be smoothly drawn out is formed by being provided.

Further, in the embodiment of the invention of claim 2, as shown in FIG. 1, there is a flat flow path base surface 3 "along the inner wall of the body block on the inner upper surface of the step portion 2. The drawing shows a case of forming a rising curved shape having a substantially 1/4 arc shape in cross section in contact with 3 ", and the water guiding groove of this rising curved shape is elliptic linear, linear, or other quadratic curve shape as described above. It may be laid in a water guide groove having a cross section.

The heights of the flow passage bottom surface 3'and the flow passage base surface 3 "of the headraces 3 and 3 are formed to have a natural running water gradient that gradually decreases from one place to the opposite direction in the left-right circumferential direction. A mark 4 is printed on the lowest part of the bottom surface 3 ′ of the channel 3 and the base surface 3 ″ of the channel.

An upper part of the bottom slab 1 is formed by connecting a conical body to the top of the water conduit 3 or the upper end of the rising curved shape.

According to the third aspect of the present invention, there is provided an invert block for sewerage, which is attached to the upper surface of a disk-shaped bottom plate b on which an outer peripheral upper surface is fitted and supported by a cylindrical block a, in a superposed state. A water conduit 3 is circumferentially provided along the inner wall of the body block on the upper surface of this invert block, and the height of the bottom surface 3'of this water conduit 3 is made to face the left and right circumferential directions from one location. It forms a natural running water gradient that gradually decreases.

Further, in the invention of claim 4, an invert block for sewerage, which is attached to the upper surface of a disk-shaped bottom plate b on which an outer peripheral upper surface is fitted and supported by a cylindrical block a so as to overlap, An upper surface of the invert block is provided along the inner wall of the body block with a flat channel base surface 3 ″, and a conduit 3 having a curved cross-section rising shape is provided in a ring shape, and the height of the conduit base surface 3 ″ of the conduit 3 is increased. It is formed in a natural running water gradient that gradually decreases from one point to the opposite direction in the left-right circumferential direction.

The illustrated invert block of the present invention is an invert block for sewerage which is attached to the upper surface of a mass-produced conventional flat disk-shaped bottom plate b in a superposed state. As described above, the upper surface of this invert block is smoothly guided along the inner wall of the body block in a cross-section rising curved shape, for example, elliptic linear, drip-shaped, or other quadratic curve-shaped inflowing drainage or rainwater is smoothly derived. In the embodiment of the invention of claim 4, the water guiding groove having a cross-sectional shape as shown in FIG.
Flat surface 3 "along the inner wall of the body block
FIG. 3 shows a case where the water conduit 3 is formed by a curved water guiding groove having a rising arc shape having a substantially 1/4 circular arc cross section which is in contact with the flow path base surface 3 ″. The shape of 3 may be provided by a water guiding groove having a quadratic curve-shaped cross section as described above.

A mark 4 is marked on the lowest portion of the flow passage bottom surface 3'and the flow passage base surface 3 "of the water conduit 3.

Since the embodiment of the present invention is formed as described above, the mark 4 marked on the lowest portion of the flow passage bottom surface 3'or the flow passage base surface 3'is aligned with the outflow height and the outflow direction of the outflow pipe c. The bottom plate 1 is installed, and the outflow surface of the lowest mark 4 is aligned with the outflow port of the body block a having an inflow port and an outflow port at a predetermined position.
An inflow pipe d and an outflow pipe c are provided at the inlet and the outlet of the body block a.
After connecting, the body block a, the inflow pipe d, and the outflow pipe c are connected and fixed to form a manhole.

Since this manhole is formed as described above, in the embodiment of FIG. 3, the drainage and rainwater that have flowed in from the inflow pipe d are divided into the left and right and join at the lowest point of the water conduit 3, and then from the outflow pipe c. leak.

In addition, in the embodiment of FIG. 4, two inflow pipes d are provided.
Although more wastewater is introduced, wastewater and rainwater do not stay in the manhole because they are guided by the headrace 3 and flow out from the outflow pipe c installed at the lowest position. Thus, even if the inflow direction of the inflow pipe d is any direction or the number of the inflow pipes d is complicated, the inflowing drainage or rainwater does not remain in the manhole and flows out of the outflow pipe c. can do.

In the case of FIG. 4, the water conduit 3 between the inflow pipe d that flows in from the diagonally right upper side and the inflow pipe d that flows in from the lower side in the plan view of FIG. It is also possible to fill the pipe with water etc. to guide the flow of drainage or rainwater to the outflow pipe c. Also, when the invert block of the present invention is attached to the upper surface of the mass-produced conventional flat disk-shaped bottom plate b in a superposed state as in claims 3 and 4, the same action and effect as described above can be obtained. .

As described above, the bottom slab 1 or the insert block according to the present invention is arranged at the installation position of the outflow pipe c and the lead-out angle.
Alternatively, since the bottom plate 1 or the invert block is installed to align the position of the mark 4 marked on the insert block to form a manhole, the lowest position of the water conduit 3 is connected to the outflow pipe c, so that the inflow pipe d is All of the inflowing wastewater and rainwater are discharged from the outflow pipe c even if they are connected to the bottom slab 1 from the direction, and even if the number of inflow pipes d is plural.

[0036]

Since the present invention is configured as described above, in the invention of claim 1, the inflow direction of the inflow pipe is any direction because the outflow pipe is connected to the lowest point of the water conduit of the slab. In addition, even if the number of inflow pipes is plural, the inflowing wastewater or rainwater does not stay in the manhole and flows out of the outflow pipe, and in the invention of claim 2, the drainage or rainwater that has flowed into the bottom plate is , A kind of centrifugal force acts on the flat channel base surface provided in the headrace to form a laminar flow and guide outflow to the outflow pipe, so that a more effective headrace is formed. It will be an omnidirectional invertible bottom plate for sewers that exhibits various effects.

Further, according to the invention of claim 3, the above effect is exhibited by utilizing a mass-produced conventional flat disc-shaped bottom plate and installing it on the upper surface in a superposed state. Similarly to the above, it becomes an omnidirectional invert block for sewerage in which a more effective water conduit is formed by utilizing the conventional flat disk-shaped bottom plate.

Therefore, unlike the conventional bottom plate, the troublesome and troublesome invert forming work of forming an inverter having a semicircular cross-section while connecting the inflow pipe and the outflow pipe to the upper surface of the bottom plate with a smooth curve is eliminated, and anyone can easily perform it. It is a bottom plate with an all-angle compatible invert for sewers and an omnidirectional compatible invert block for sewers that exhibits uniform accuracy and improves efficiency, and exhibits outstanding practicality at low cost.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the invention of claim 1.

FIG. 2 is a sectional view showing an embodiment of the invention of claim 2;

FIG. 3 is a schematic explanatory plan view showing the state of drainage and rainwater flow when there is one inflow pipe according to the present embodiment.

FIG. 4 is a schematic plan view showing a state of drainage and rainwater flow when there are two inflow pipes according to the present embodiment.

[Explanation of symbols]

 a body block b outflow pipe c inflow pipe 1 bottom plate 2 fitting step portion 3 headrace 3'channel bottom 3 "channel base

Claims (4)

[Claims] 1. A fitting step portion is provided on the upper surface of the outer peripheral edge of a disk-shaped bottom plate to receive and support the body block, and the inner surface of the fitting step portion is circumferentially formed along the inner wall of the body block. An omnidirectional invertor for sewers, characterized in that a headrace is installed, and the height of the bottom of the headway of this headrace is set to a natural running water gradient that gradually decreases from one location in the left-right circumferential direction to the opposite direction. Bottom plate. 2. A disc-shaped bottom slab is provided with a fitting stepped portion on which an outer peripheral surface of the disc-shaped bottom plate is fitted and supported, and a flat flow path base is provided along an inner wall of the metallic block on the upper surface inside the fitting stepped portion. A headrace with a curved cross-section having a curved surface is installed in a ring shape, and the height of the base of the headway of this headrace is set to a natural running water gradient that gradually decreases from one location to the opposite direction in the left and right circumferential directions. An omnidirectional invert bottom plate for sewers. 3. An invert block for sewerage, which is attached to the upper surface of a disk-shaped bottom plate, which is fitted and supported by an upper surface of an outer peripheral edge, in a superposed state. The upper surface of the invert block is an inner wall of the cylindrical block. It is characterized in that a water conduit is circumferentially provided along the line, and the height of the bottom of the channel of this water conduit is formed in a natural running water gradient that gradually decreases from one location to the opposite direction in the left and right circumferential directions. An omnidirectional invert block for sewers. 4. An invert block for sewerage, which is attached to the upper surface of a disk-shaped bottom plate which is fitted and supported by an upper surface of an outer peripheral edge in a superposed state, wherein the upper surface of the invert block is an inner wall of the cylindrical block. A guideway with a curved cross-section that has a flat flow path base surface along a line is installed in a ring shape, and the height of the flow path base surface of this flow path gradually decreases from one location to the opposite direction in the left-right circumferential direction. An omnidirectional invert block for sewers, characterized by a natural running water gradient.