JPH0333829Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to improvement of invert structures such as sewage basins.

<Prior art> In conventional sewage basins, in order to flush waste with the minimum amount of water, it is necessary to
As described in Japanese Patent No. 26212, a water guide groove is provided on the top surface of the invert to connect the wastewater inlet and outlet. For this reason, depending on the installation location, the water guide grooves may be made in advance at a factory, such as straight lines, left-turning grooves, right-turning grooves, or a combination of these.

Publication No. 45-10289 or Publication No. 49-867
The one described in the publication is a sewage basin with a flat bottom.

In addition, the sewage basin described in Publication of Utility Model Publication No. 48-38943 is
This structure allows mortar to be filled into unused water channels.

<Problem that the invention attempts to solve> JP-A-51-142851 or Utility Model Publication No. 39-
In the case of the sewage basin described in Publication No. 26212, it is necessary to prepare many types of sewage basins, such as one with a straight water guide groove, one with a left turn, one with a right turn, or a combination of these. Furthermore, since sewage and the like constantly flow through the flow path, solid matter that sticks to the slopes and upper surfaces around the flow path due to the force of the water is not washed away, which is extremely unsanitary.

In the case of the sewage basins described in Japanese Utility Model Publication No. 45-10289 and Japanese Utility Model Publication No. 49-867, the inflowing sewage spreads throughout the basin and cannot maintain a high water level. For this reason, solid matter in the wastewater adheres to the bottom surface and cannot be smoothly discharged out of the tank, making it extremely unsanitary.

In the case of the sewage basin described in Utility Model Publication No. 48-38943,
Since sewage and the like constantly flow through the flow path, solid matter that sticks to the slopes and upper surfaces around the flow path due to the force of the water cannot be washed away, which is extremely unsanitary.

<Means for Solving the Problems> The present invention aims to eliminate the various drawbacks of the above-mentioned prior art, and is configured as follows for this purpose. That is, in an invert structure consisting of an invert and a bottom side mass, the invert and the bottom side mass are separated, and a funnel-shaped concave portion converging from the outer periphery to approximately the center is formed on the top surface of the invert. It is an inverted structure with an outflow path leading from the center to the outside.

<Function> A funnel-shaped recess is formed on the top surface of the invert, converging from the outer periphery to approximately the center. Therefore, sewage that enters from any direction gathers in the center, making it possible to secure a wide range of inflow directions for sewage. Since the invert and the bottom side mass are made separate, the materials for both can be made to suit their respective purposes. In addition, since it is a separate body, it is easy to make a formwork, which simplifies manufacturing.

<Examples> Examples of the present invention will be described below based on the drawings. First, invert 1 will be explained. A funnel-shaped recess 2 converging from the outer periphery to approximately the center is formed on the upper surface of the cylindrical invert 1, and a groove communicating with the outside from the bottom of the center is provided as an outflow path 3. The outflow path 3 is provided with a slope that is slightly lower on the outside. The inclination angle of the slope 4 of the concave portion 2 is appropriately selected within the range of 20 degrees to 50 degrees. If the angle becomes larger than this range, the waste will flow well, but the height of the invert 1 will become higher than necessary, making the invert 1 large. On the other hand, if the slope is made smaller than the above range, the height will be lower, but it will be difficult for dirt to flow, so the inclination angle will be set to an appropriate angle within the above range depending on the usage situation.

The bottom side mass 7 is made separately from the invert 1. A thin wall 72 is provided over the entire circumference of the peripheral wall 71 in a portion above the invert 1 to facilitate opening of a through hole into which the tip of the inflow pipe 9 is inserted.

Next, I will explain how to use this sewage basin. The invert 1 with the slope angle of the slope 4 set within the above range according to the usage situation is placed in the separately manufactured bottom side block 7, and the outflow path 3 is connected to the bottom side block 7.
Align it with the outlet 6 of the Fill the space between the invert 1 and the bottom side mass 7 with mortar 8, and invert 1
to be fixed. A through hole is made in the thin wall portion 72 at a portion corresponding to the inflow pipe 9 to be connected, and the tip of the inflow pipe 9 is inserted therein. In this case, the inlet pipe 9 can be placed in either direction as shown in FIG. The wastewater entering from the inflow pipe 9 flows down the slope 4 of the recessed part 2, and then flows through the inflow path 3 to the discharge pipe (not shown).

<Effects of the Invention> As explained above, the sewage basin of the present invention has a funnel-shaped concave portion converging from the outer periphery to approximately the center on the top surface of the invert. Therefore, sewage that enters from any direction gathers in the center, so it can be handled even if the inflow pipe is located in any direction. Since the invert and the bottom side mass are separate, the materials for both can be made to suit their respective purposes. Furthermore, since it is a separate body, it is easy to make a formwork, so it also has the effect of being easy to manufacture.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an invert according to the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, and Fig. 3 is a sectional view taken along line A-A in Fig.
The figure is a sectional view taken along line BB, FIG. 4 is a perspective view showing an invert, and FIG. 5 is a longitudinal sectional view showing a cesspit. 1... Invert, 2... Concavity, 3... Outflow path, 4... Slope, 5... Sewage basin, 6... Drain port,
7...Bottom side mass, a...through hole.

Claims (1)

[Scope of utility model registration request] In an invert structure consisting of an invert and a bottom side mass, the invert and the bottom side mass are separated, and a funnel-shaped recess is formed on the top surface of the invert that converges from the outer periphery to approximately the center. An invert structure with an outflow path leading from the inside to the outside.