JP4873537B2 - Odor blocking device and its mounting structure - Google Patents

Description

The present invention provides an odor blocking device for dropping sewage and dust from a road surface into a sewer and installing the present invention in a route leading from the sewer to a manhole, and preventing odors from being ejected to the ground. It relates to the mounting structure.

Conventionally, as a first example of this type of odor blocking device, there is a technique disclosed in Japanese Patent Application Laid-Open No. 2005-194770 shown in FIG. Explaining this, the manhole 1 is for workers to enter and leave the sewer. A lid holding frame 3 is provided at the top of the vertical hole 2, and a lid 4 is placed on the lid holding frame 3. Yes. An odor control device 5 is provided inside the manhole 1. As shown in FIG. 11, the deodorizing device 5 is attached to the inner wall 2 a of the vertical hole 2 of the manhole 1. The odor control device 5 has a lower lid 6, which is a ring-shaped member made of a metal plate and having an inner diameter hole at the center, and the outer diameter is equal to the inner diameter of the vertical hole 2 of the manhole 1. For example, it is 900 mm, and the inner diameter hole is 600 mm which is large enough for a person to pass. The lower lid 6 is a ring-shaped member that is formed by joining a semi-annular member with a joining portion, and the diameter can be somewhat enlarged or reduced by the joining portion, and is adjusted to the inner diameter of the vertical hole 2. Can do. The lower lid 6 is fixed with screws 8 by mounting angle members 7 provided at four locations. A seal member such as rubber is fitted on the outer periphery of the lower lid 6 so that the inner wall 2a of the vertical hole 2 is sealed. The upper lid 9 is a circular metal plate, and the outer diameter is slightly larger than the diameter of the inner diameter hole of the lower lid 6, and a sealing member such as rubber is fitted on the outer periphery. A drain hole 10 and an exhaust hole 11 are provided in the lower lid 6. The drain hole 10 is composed of a drain opening formed in the lower lid 6 and a cylindrical body connected below the drain opening, and one of the cylindrical bodies is fixed to the lower surface of the upper lid 9 described above. The drain cover 12 is in contact with the other opening of the cylinder.

Next, as a second example of this type of hinge portion reinforcing structure, there is a technique disclosed in Japanese Patent Application Laid-Open No. 2004-19242 shown in FIG. Describing this, as shown in FIG. 12, the cloth-like body 13 includes a rectangular portion 14 having a predetermined width and a predetermined length of about half of the inner circumference of the tube tub, and a substantially semicircular shape continuous therewith. Is formed of a pair of arcuate pieces 15 and 15 cut out in a V shape from the circle center at an angle of 55 degrees. The rectangular portion 14 has a predetermined width at one end and a predetermined width at both sides as inner wall mounting allowances 16, 16, 17, and 17, respectively. The inner wall mounting allowance 16 at one end fixes the cloth-like body 13 in the circumferential direction of the upper half of the cylindrical tube inner wall, and the attachment allowances 17 and 17 on both sides fix the cloth-like body 13 in the pipe line direction of the inner wall of the tube hook. Is for. In the arc-shaped piece 15, a plurality of folded pieces 18 are formed at the arc-shaped edge portion by cuts 18a, and a float storage portion is formed at a predetermined width at the V-shaped cut-out edge portion. Here, the material of the cloth-like body 13 is not particularly limited, but is preferably waterproof, and a double-sided PVC coated aramid fiber sheet was used. In addition, the dimension of the cloth-like body 13 is about 1/2 of the inner circumference of the tube tub in both width and length. As shown in FIG. 12, the cloth-like body 13 folds the folded pieces 18 formed on the arc-shaped edge portion, and heat-fuses to reinforce the edge portion. In addition, the float material shown in FIG. 12, for example, is folded and stored in the V-shaped notch edge. The float material is preferably a single-cell foam, for example, a styrene-based single-cell foam is formed into a square material, and sandwiched by FRP plates from both sides. In this case, the size of the float material is set so that it can be stored in the float storage unit 19. In this way, a duct odor shielding sheet is formed as a whole.
Japanese Patent Laid-Open No. 2005-194770 Japanese Patent Laid-Open No. 2004-19242

The conventional technique has the following problems because it has the configuration and operation as described in the background art.
That is, according to the first example, the odor stop device 5 is attached to the inner wall 2 a of the vertical hole 2, and the left and right screws 8 are used to remove the odor stop device 5 from the vertical hole 2. The lower cover 6 and the upper cover 9 are separated, for example, and the screws 8 and 8 tightened to the mounting angle member 7 fixed to the inner wall 2a are loosened. Then, the lower lid 6 and the upper lid 9 are removed, and the other components of the odor control device 5 such as the drain lid 12 fixed to the lower lid 6 and the upper lid 9 are removed. Therefore, after the odor control device 5 is once removed from the inner wall 2a, when a worker who enters the manhole exits the manhole after the work is completed, it is necessary to reattach the new odor control device 5 to the inner wall 2a. In addition, the man-hours for replacing the deodorizing device 5 are greatly increased, and the number of parts of the deodorizing device 5 itself is large, resulting in increased production costs and assembly costs.

In addition, according to the second example, the pipe odor shielding sheet is a device that is attached to the sewage pipe or in the middle of the pipe, cuts off the bad odor on the upstream side, and cuts off the bad odor on the downstream side. Therefore, there is a problem that it is difficult to specify the installation location of the pipe odor blocking sheet for effectively preventing bad odors from the surrounding residents.
The problem to be solved by the present invention is to solve the problems described in the background art.

The odor blocking device according to the present invention is characterized in that it can be easily and quickly attached to the wall surface of a manhole, and muddy water or sewage or dust from above can be appropriately dropped into the sewer, and cut off the odor outlet. Therefore, it is effective as a countermeasure against bad odors, and since it has been commercialized, it can be installed even by an amateur without requiring a skilled worker, and can be opened and closed by a finale finaler, allowing inspection of sewers and the like from the road surface. It is intended to provide an odor blocking device that opens and closes only at the time of intrusion by the discharge lid even if intrusion of muddy water, and is always closed, so that no odor outflow occurs. It consists of means.

That is, according to the first aspect of the present invention, the flexible resin sheet is formed in a substantially dish shape or a substantially conical shape, and includes a vertical wall surface portion and a bottom surface portion, and the vertical wall surface portion is attached to the flexible resin sheet. Department upper end, a device for mounting subordinates Tan及 beauty bottom surface is a flexible resin sheet cut-off portion, separate them with a non-detachable part in a part between the mounting portion lower end and the attachment portion top edge And a discharge hole flange portion having a discharge lid that allows the central hole to be freely opened and closed by depositing or dropping an impurity at the approximate center of the flexible resin sheet blocking portion. It is characterized by.

According to a second aspect of the present invention, in the first aspect of the present invention, the discharge hole flange portion includes a discharge lid that allows the central hole to be opened and closed by depositing or dropping an impurity, and a circle having a substantially rectangular cross section. A ring-shaped annular body having a spring-like hinge connected to the base end of the discharge lid and a substantially rectangular cross-section that is fixed to the peripheral edge of the central hole and has the spring-attached hinge. It is characterized by comprising a flange made of

According to a third aspect of the present invention, in the odor blocking apparatus according to the first or second aspect, the mounting portion of the flexible resin sheet formed in a substantially dish shape or a substantially conical shape fixed to the wall surface of the manhole. A substantially ring-shaped presser fitting that is fixed to the surface of the upper end and has a predetermined width, and an anchor bolt that penetrates and fixes the upper end of the attachment portion from the surface of the substantially ring-shaped presser fitting.

According to invention of Claim 4, it is an odor cutting device formed in the substantially dish shape or the substantially cone shape as a whole, a substantially vertical wall surface part is comprised with a flexible resin sheet, and the substantially vertical wall surface part is attached. A bottom portion fixed to the flexible resin sheet is formed of a plastic material blocking portion, and a non-detachable portion is partially formed between the upper end of the mounting portion and the lower end of the mounting portion. A discharge hole flange portion having a discharge lid that opens and closes the central hole by depositing or dropping an impurity body at a substantially central portion of the plastic material cutoff portion. It is characterized by comprising.

According to a fifth aspect of the present invention, in the fourth aspect of the present invention, the discharge hole flange portion includes a discharge lid that allows the central hole to be opened and closed by depositing or dropping impurities, and a peripheral portion of the central hole. A hinge with a spring fixed to the lower surface and connected to the base end of the discharge lid.

According to the invention described in claim 6, the lower end of the mounting portion of the flexible resin sheet fixed to the wall surface of the manhole in the odor blocking device having a substantially dish or cone shape as a whole according to claim 4 or 5 It is characterized by comprising a plastic material cutting part for welding and fixing the material and an anchor bolt penetrating / fixing from the top surface of the upper end of the mounting part of the flexible resin sheet.

Since the odor blocking device and its mounting structure according to the present invention have the above-described configuration, the following effects are obtained.

That is, according to the first aspect of the present invention, the flexible resin sheet is formed in a substantially dish shape or a substantially conical shape, and includes a vertical wall surface portion and a bottom surface portion, and the vertical wall surface portion is attached to the flexible resin sheet. Department upper end, a device for mounting subordinates Tan及 beauty bottom surface is a flexible resin sheet cut-off portion, separate them with a non-detachable part in a part between the mounting portion lower end and the attachment portion top edge And a discharge hole flange portion having a discharge lid that allows the central hole to be freely opened and closed by depositing or dropping an impurity at the approximate center of the flexible resin sheet blocking portion. An odor blocking device characterized by the above is provided.
With this configuration, the discharge lid is always closed, so that odors and off-flavors that have risen from the sewers do not flow out or be ejected onto the road surface. The odor blocking device can be opened and closed by moving it, making it easy to enter and leave the sewer, etc., and to speed up the cleaning and inspection work of the sewer.

According to invention of Claim 2, the said discharge hole flange part is the lower surface of the flange which consists of a discharge lid which makes a center hole openable and closable by accumulation or dropping of an impurity body, and a toric body having a substantially rectangular cross section. A hinge with a spring connected to the base end of the discharge lid, and a flange made of an annular body having a substantially rectangular cross section, which is fixed to the peripheral edge of the central hole and provided with the hinge with the spring. The odor cutoff device according to claim 1 is provided.
Since this structure is adopted, in addition to the effect of the first aspect of the invention, in addition to the effect of the invention according to claim 1, the spring is hinged with a spring at the approximate center of the flexible resin sheet blocking portion in the odor blocking device, and automatically deposited or dropped. A discharge lid that can be opened and closed is provided, so that sewage, muddy water, or water leakage from the road surface can be rationally dropped into the sewer, etc. without remaining on the road surface, and odors can be discharged and spouted onto the road surface. There is an effect that there is no.

According to a third aspect of the present invention, in the odor blocking apparatus according to the first or second aspect, the mounting portion of the flexible resin sheet formed in a substantially dish shape or a substantially conical shape fixed to the wall surface of the manhole. An odor blocking device comprising: a substantially ring-shaped presser fitting fixed to a surface of the upper end and having a predetermined width; and an anchor bolt that penetrates and fixes the upper end of the attachment portion from the surface of the substantially ring-shaped presser fitting. The mounting structure is provided.
With such a configuration, the odor blocking device that has been commercialized in advance is transported to the manhole installation location on the road surface, and even an amateur who does not require skill can easily install and fix it on the wall of the manhole. There exists an effect that the implementation is easy.

According to invention of Claim 4, it is an odor cutting device formed in the substantially dish shape or the substantially cone shape as a whole, a substantially vertical wall surface part is comprised with a flexible resin sheet, and the substantially vertical wall surface part is attached. A bottom portion fixed to the flexible resin sheet is formed of a plastic material blocking portion, and a non-detachable portion is partially formed between the upper end of the mounting portion and the lower end of the mounting portion. A discharge hole flange portion having a discharge lid that opens and closes the central hole by depositing or dropping an impurity body at a substantially central portion of the plastic material cutoff portion. Provided is an odor blocking device characterized by comprising.
With this configuration, the discharge lid is always closed, so that odors and off-flavors that have risen from the sewers do not flow out or be ejected onto the road surface. The odor shut-off device can be opened and closed by operating it, making it easy to enter and exit the sewer, etc., and speeding up the cleaning and inspection work of the sewer etc. In addition, there is a gap between the manhole housing and the plastic material shut-off part It becomes possible to follow the deformation of the roadbed during an earthquake, and has the effect of withstanding use for many years.

According to the fifth aspect of the present invention, the discharge hole flange portion is configured to be able to open and close the central hole by depositing or dropping an impurity, and the base of the discharge lid is fixed to the lower surface of the peripheral edge of the central hole. 5. The odor blocking device according to claim 4, further comprising a hinge with a spring connected to the end.
Since this structure is adopted, in addition to the effect of the invention described in claim 4, in addition to the effect of the invention of claim 4, the flexible resin sheet blocking portion in the odor blocking device is automatically centered on the center of the flexible resin sheet blocking portion by the accumulation or dropping of impurities. A discharge lid that can be opened and closed is provided, so that sewage, muddy water, or water leakage from the road surface can be rationally dropped into the sewer, etc. without remaining on the road surface, and odors can be discharged and spouted onto the road surface. And there is a gap between the manhole housing and the plastic material cut-off part, so that it is possible to follow the deformation of the roadbed during an earthquake and withstand the use for many years.

According to the invention described in claim 6, the lower end of the mounting portion of the flexible resin sheet fixed to the wall surface of the manhole in the odor blocking device having a substantially dish or cone shape as a whole according to claim 4 or 5 A structure for mounting an odor blocking device comprising: a plastic material blocking portion for welding / fixing and an anchor bolt penetrating / fixing from the top surface of the upper end of the mounting portion of the flexible resin sheet. .
Since such a configuration is adopted, in addition to the effect of the invention of claim 4 or 5, the flexible resin sheet and the plastic material cutting part are easily welded and joined, so the man-hours for producing the odor cutting device can be shortened. Is effective.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an odor blocking device and its mounting structure according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a vertical sectional view showing a state in which an odor blocking device according to the present invention is attached to a wall surface of a manhole under a road surface.
FIG. 2 is a perspective view showing a schematic configuration in the embodiment of the odor blocking device according to the present invention.
FIG. 3 is a drawing showing a configuration of a discharge hole flange portion disposed substantially at the center of the bottom surface of the odor blocking device, wherein (a) is an enlarged cross-sectional view in the direction of the arrow AA in FIG. b) is an enlarged plan view.
FIG. 4 is a vertical sectional view of an essential part showing a first example of the mounting structure of the odor blocking device. FIG. 5 is a plan view seen from above in FIG.

Reference numeral 20 denotes a manhole for workers to enter and leave the sewer. The manhole is installed at a predetermined location on the road surface E, and a lid 21 is covered on the upper end thereof. The lid 21 is placed on the lid holding frame 21a. On the wall surface 20a of the manhole 20, there is a step 20b provided for an operator to go down to the sewer and perform work such as cleaning and inspection. And the odor cutoff device B which concerns on this invention is attached to the upper part of the wall surface 20a of the said manhole 20. As shown in FIG.

Next, an embodiment of the odor cutoff device B according to the present invention will be described.
As shown in FIG. 2, for example, the odor cutoff device B has a substantially dish-like or substantially conical shape as a whole, and the whole is made of a flexible resin sheet 22. The material of the flexible resin sheet 22 must be a sheet having gas barrier properties. As a sheet suitable for this purpose, a waterproof material, a sheet waterproof material used in the waterproof method, and a sheet material similar to the waterproof sheet are available. These sheet materials are vulcanized rubber, non-vulcanized rubber, polyurethane, vinyl chloride resin, fluororubber, polyethylene vinyl acetate resin, polyethylene resin, polypropylene resin, thermoplastic elastomer Homogeneous sheet molded from one or more materials such as fluorinated resin, or a composite molded from one or more materials such as the above-mentioned various rubber-based, various resin-based, thermoplastic elastomers, and fiber knitted or non-woven fabric or adhesive fabric A sheet is preferred. The shape of the flexible resin sheet 22 is composed of a vertical wall surface portion and a bottom surface portion, and the vertical wall surface portion is constituted by an attachment portion upper end 22a and an attachment portion lower end 22b, and both of these are attached to a detachable member such as a fastener or a zipper. 22c is provided around and connected. The detachable member 22c may be attached by welding or sewing a resin zipper, for example, a YKK screwlon 15 to the flexible resin sheet 22 or a plastic odor blocking device. The bottom surface portion constitutes a so-called flexible resin sheet blocking portion 22d. A portion where the detachable member 22c is not provided, that is, a non-detachable portion 22e is formed on the vertical wall surface portion. Although the detachable member 22c is not shown in the drawing, an operating part such as an operating rod or an operating hook is fixed to either the right end 22f or the left end 22g, and the operating part is rotated to the right or left side to be attached to the upper end 22a of the mounting portion. The lower end 22b is separated or joined, leaving the non-detachable part 22e. The flexible resin sheet 22 may have a substantially conical shape, and may constitute a plastic odor blocking device, and its mounting portion may be made of a flexible resin sheet material.

A discharge hole flange portion 23 is provided in the approximate center of the flexible resin sheet blocking portion 22d. For example, as is apparent from the configuration shown in FIGS. 3A and 3B, the discharge hole flange 23 opens when sewage or dust enters from above the manhole 20 and accumulates an appropriate amount thereof. The discharge lid 23a is configured to drop into a sewer or a sewer, and the base end of the discharge lid 23a is fixed, for example, by a hinge 23b with a spring, and at the peripheral portion 22h of the central hole 22i of the flexible resin sheet blocking portion 22d. The flange 23c has a substantially rectangular cross section. The spring-equipped hinge 23b is composed of a linear spring and a hinge 23e. The linear spring is wound around a hinge 23e located on the lower surface of the flange 23c, and the discharge lid 23a is attached to the hinge 23e by the reaction force of the linear spring. The center hole 22i is attached to the flange 23c so as to be opened and closed by moving up and down. The flange 23c is made of, for example, rigid stainless steel and is an annular part. The flange 23c sandwiches the flexible resin sheet blocking part 22d, and is a joint part 23d made of bolts and nuts. The central hole of the flexible resin sheet blocking part 22d The peripheral edge 22h of 22i is provided and fixed. You may employ | adopt the trap which can make a leak flow right under the bottom part of the substantially plate-shaped or cone-shaped flexible resin sheet 22 or a plastic odor cutoff device.

Next, the 1st example of the attachment structure of the odor cutoff apparatus B is demonstrated based on FIG.4 and FIG.5.
The odor cutoff device B forms a mounting portion upper end 22a and a mounting portion lower end 22b, and a detachable member 22c made of, for example, a resin fastener is interposed therebetween to separate or combine the two. And the bottom part of the flexible resin sheet 22 formed in the substantially dish shape or the substantially cone shape as a whole becomes the flexible resin sheet cutoff part 22d, and is integrally formed with the mounting part lower end 22b. Therefore, as shown in FIG. 4, the mounting portion upper end 22 a and the mounting portion lower end 22 b abut against the wall surface 20 a of the manhole 20. Next, as shown in FIG. 5 having a predetermined width on the surface of the upper end 22a of the mounting portion, a substantially ring-shaped presser fitting 24 and a flat bar (SUS304) are pressed and arranged. Further, the anchor bolt 25 is driven from the surface of the substantially ring-shaped presser fitting 24 through the upper end 22 a of the attachment portion and driven into the wall surface 20 a of the manhole 20.

The driving operation of the anchor bolt 25 is performed with a predetermined interval around the entire circumference of the attachment portion upper end 22a of the flexible resin sheet 22 formed in a substantially dish shape or a substantially conical shape. Therefore, for example, the anchor bolt 25 is driven toward the wall surface 20a at the central point of the flexible resin sheet 22 and at an angle of about 45 °. Thus, the substantially dish-shaped or substantially conical flexible resin sheet 22, that is, the odor blocking device B is mounted at a predetermined position of the manhole 20.
In the figure, reference numeral 24a denotes a taper washer, which is interposed between the head of the anchor bolt 25 and the substantially ring-shaped presser fitting 24. When the anchor bolt 25 is driven into the wall surface 20a, the substantially ring-shaped presser bracket 24 is attached. The upper end 22a is fixed in close contact.

Next, the 2nd example of the attachment structure of the odor cutoff device B is demonstrated based on Fig.6 (a), (b) and FIG.
FIG. 6 (a) shows a welding means for attaching a sandwich metal fitting having a substantially U-shaped cross section, which is attached to a stainless steel fitting having a V-shaped cross section fixed to an upper end 22a of the mounting portion of the substantially dish-like flexible resin sheet 22 to the attachment plate. This is an example of fixing the odor to the odor blocking device B.
FIG. 6B is an example of an additional configuration in the mounting structure of the odor blocking device B shown in FIG. 6A, and the mounting of the odor blocking device B in which a filler is interposed between the attachment plate and the stainless steel fitting. Structure. The filler can be selected from plastic rubber such as butyl rubber, water swelling rubber, urethane foam material, polyethylene foam material, silicone caulking material and the like.

In FIG. 6A, reference numeral 26 denotes an attachment plate, which has a predetermined width and has a substantially annular shape matching the inner shape of the manhole 20 and is provided around the wall surface 20 a of the manhole 20. . The splicing plate 26 is fixed by driving anchor bolts 25 onto the wall surface 20a. A flat bar (SUS304) may be used in place of the attachment plate 26. On the other hand, the attachment portion upper end 22a of the flexible resin sheet 22 has a substantially V-shaped stainless steel fitting 27 having a predetermined width and a predetermined height, as shown in the plan view of FIG. Covering at an angle of about 45 ° from the center point, and using an adhesive or by external welding means or the like.

That is, the inner piece 27a of the substantially V-shaped stainless steel fitting 27 is sandwiched between the upper end 22a of the mounting portion of the flexible resin sheet 22, and the outer piece 27b of the substantially V-shaped stainless steel fitting 27 is sandwiched between the substantially U-shaped sections. It is fixed to the metal fitting 28 by caulking, press-fitting or welding means. At this time, since the convex portion 27c is formed on the surface of the outer piece 27b, the fixing of the sandwiched metal fitting 28 having a substantially U-shaped cross section becomes tight. The outer surface of the sandwiched metal fitting 28 having a substantially U-shaped cross section is fixed by forming a welded portion C on the surface of the attachment plate 26 by welding means or the like. Similarly, sandwiching fittings 28 having a substantially U-shaped cross section are also fixed to other parts of the attachment plate 26 in sequence.
Thus, the odor cutoff device B is mounted on the wall surface 20a of the manhole 20. Then, as shown in FIG. 8, a manhole 20, that is, a manhole cover 21, at an intersection of the road surface E of each road or a predetermined location on the center line L of the other road surface E is installed.

When the odor blocking device B has passed its service life or has been damaged due to some reason, the welded portion C is removed, or the attachment portion upper end 22a of the flexible resin sheet 22 is removed with a substantially V-shaped stainless steel fitting 27. The odor blocking device B can be replaced with a new one by removing it from the inner piece 27a.

Further, as an additional configuration of the above-described second example, as shown in FIG. 6B, it is formed by an attachment plate 26 shown in FIG. 6A and an outer piece 27b of a stainless steel fitting 27 having a substantially V-shaped cross section. The urethane foam 29 is filled into the space D. When the filling operation of the urethane foam material 29 is completed, for example, eight places are provided on the wall surface 20a of the manhole 20 as shown in FIG.
Thus, since the urethane foam 29 is interposed in the wall surface 20a of the manhole 20, even when the diameter of the manhole 20 or the expansion / contraction action of the wall surface 20a is induced due to an earthquake or wheel load caused by a vehicle, The odor blocking device B will not be detached from the wall surface 20a.
Other configurations are substantially the same as those of the first example of the mounting structure of the odor blocking device B described above, and the same reference numerals are given and the description thereof is omitted.

Next, the operation | movement etc. in embodiment of the odor cutoff device which concerns on this invention, and its attachment structure are demonstrated.

For example, the worker needs to clean the sewage channel at predetermined intervals or perform an inspection of the sewage channel. For this purpose, as shown in FIG. 8, a manhole 20 is installed above the sewer, and a lid 21 is covered on the upper end thereof. When an operator goes to a sewer or sewer, the operator removes the lid 21 and grasps an operating part (not shown) such as an operating rod or an operating hook attached to the detachable member 22c, for example, the right end 22f shown in FIG. To the left end 22g. Therefore, the attachment portion lower end 22b of the flexible resin sheet 22 is separated from the attachment portion upper end 22a except for the non-detachable portion 22e, and hangs down in the manhole 20 while being suspended from the non-detachable portion 22e. Thus, the odor blocking device B is opened, and the worker can go down to the bottom of the manhole 20 by using the platform 20b and go to the sewer etc. located below the manhole 20, and work such as cleaning of the sewer Can be undertaken.

When the work such as sewerage by the worker is completed, the worker runs up the step 20b, pulls up the hanging lower end 22b of the mounting portion and grasps the operation component, for example, from the left end 22g shown in FIG. 2 to the right end. It rotates to 22f, the attachment part lower end 22b of the flexible resin sheet 22 is connected and connected to the attachment part upper end 22a, and the lid 21 is placed in the original position, that is, the lid holding frame 21a, and the odor blocking device B is in a closed state, that is, in a sealed state, so that malodors and odors from sewers and the like are not discharged to the road surface E. Here, as shown in FIG. 1, from the gap formed by the lid 21 and the lid holding frame 21a or the gap formed by the lid holding frame 21a and the road surface E, sewage, muddy water, water leakage, dust, earth and sand, pebbles, etc. The impurity F falls on the bottom surface of the odor blocking device B and stays or accumulates on the flexible resin sheet blocking portion 22d of the odor blocking device B, in particular, the discharge lid 23a as shown in FIG. At this time, the discharge lid 23a is in a state in which the central hole 22i is closed. When the impurity F is deposited on the discharge lid 23a in a predetermined amount or more, the spring-loaded hinge 23b is forcibly wound by the load force of the discharge lid 23a and the discharge lid 23a is As shown in FIG. 3, the impurities F are dropped in the direction of arrow G. Thus, the impurity F falls into a sewer channel or sewer system disposed below. Therefore, the discharge lid 23a is restored by the reaction force of the linear spring of the hinge with spring 23b, and closes the central hole 22i.

On the other hand, daily miscellaneous water, filth, and the like are constantly flowing into the sewer and the sewer, and various odors such as bad odor and nasty odor rise from the sewer and the sewer, and rise through the manhole 20. Here, in the odor blocking device B, the discharge lid 23a of the flexible resin sheet blocking portion 22d formed on the bottom portion thereof completely closes the central hole 22i. The odor rising from the sewer and the sewer is cut off by the discharge lid 23a without flowing out or spouting to the road surface E, and complaints from the surrounding residents due to a strange odor or bad odor can be eliminated.

Next, Example 1 of the odor cutoff device and its mounting structure according to the present invention will be described in detail with reference to FIGS. 9 (a) and 9 (b).
The odor cutoff device B as a whole has a substantially dish shape or conical shape, and consists of a substantially vertical wall surface portion and a bottom surface portion. The substantially vertical wall surface portion is a rising portion and is constituted by a flexible resin sheet 22A, and the bottom surface portion is constituted by an integrally molded plastic material blocking portion 22B.

A substantially vertical wall surface portion of the odor blocking device B is a flexible resin sheet 22A as a rising portion, and has a mounting portion upper end 22j and a mounting portion lower end 22k, and between the mounting portion upper end 22j and the mounting portion lower end 22k. Both members are joined by surrounding a desorption member 22m such as a zipper. The detachable member 22m is formed of a resin zipper, for example, YKK screwlon 15. A portion where the detachable member 22m is not provided, that is, a non-detachable portion (not shown) is formed on the substantially vertical wall surface portion.

Although the detachable member 22m is not shown in the drawing, an operating part such as an operating rod or an operating hook is fixed to either the right end or the left end, and the operating part is rotated to the right or left to rotate the mounting part upper end 22j and the mounting part lower end. 22k is separated or combined with the non-detachment part remaining.

The plastic material cut-off portion 22B is formed integrally with a slope 22n and a flat surface 22p, and a central hole 22i is provided at substantially the center thereof, for example, as apparent from the configuration shown in FIGS. In addition, the discharge lid 23a is configured such that when sewage or dust enters from above the manhole 20 and accumulates an appropriate amount thereof, the discharge lid 23a is configured to drop into the sewer or the sewer, and the base end of the discharge lid 23a is connected to, for example, a spring. Secure with hinge 23b. Then, a plastic hinge 23b is fixed to one of the lower surfaces of the peripheral portion 22h of the central hole 22i of the plastic material blocking portion 22B. The spring-equipped hinge 23b is composed of a linear spring and a hinge 23e. The linear spring is wound around a hinge 23e located on the peripheral edge 22h of the central hole 22i, that is, the lower surface of the flat surface 22p, and the reaction force of the linear spring Then, the discharge lid 23a is moved up and down by the hinge 23e, and the central hole 22i is attached to the peripheral portion 22h of the central hole 22i so as to be opened and closed.

Next, the 2nd example of the attachment structure of the odor cutoff device B is demonstrated based on Fig.9 (a), (b).
The odor cutoff device B has an attachment upper end 22j and an attachment lower end 22k, and a desorption member 22m made of, for example, a resin zipper or the like is interposed therebetween to separate or combine them. The bottom portion of the odor blocking device B, which is formed in a substantially dish shape or substantially cone shape as a whole, is a plastic material blocking portion 22B, and the plastic material blocking portion 22B and the lower end 22k of the mounting portion are fixed in series with welding or an adhesive. To do. For example, both of them are sandwiched and held by an attachment plate or a contact plate, or the attachment portion lower end 22k is branched, and a plastic material cutoff portion 22B is interposed therebetween, and then fixed by welding means.

Thus, the upper end 22j of the mounting portion abuts against the wall surface 20a of the manhole 20. Then, the anchor bolt 25 is penetrated from the surface of the mounting portion upper end 22j and driven into the wall surface 20a of the manhole 20. The operation of driving the anchor bolt 25 is performed with a predetermined interval around the entire circumference of the attachment portion upper end 22j of the flexible resin sheet 22A formed in a substantially dish shape or a substantially conical shape. Therefore, for example, the anchor bolt 25 is driven toward the wall surface 20a at the central point of the flexible resin sheet 22A and at an angle of about 45 °. Thus, the substantially dish-shaped or substantially conical flexible resin sheet 22 </ b> A, that is, the odor blocking device B is mounted at a predetermined position of the manhole 20.

Next, the operation | movement etc. in Example 1 of the odor cutoff device which concerns on this invention, and its attachment structure are demonstrated.

For example, the worker needs to clean the sewage channel at predetermined intervals or perform an inspection of the sewage channel. For this purpose, as shown in FIG. 8, a manhole 20 is installed above the sewer, and a lid 21 is covered on the upper end thereof. When the worker goes to a sewer or sewer, the operator removes the lid 21, grasps an operating part (not shown) such as an operating rod or an operating hook attached to the detachable member 22c, and, for example, from the right end shown in FIG. Rotates to the left end. Therefore, the attachment portion lower end 22k of the flexible resin sheet 22A is separated from the attachment portion upper end 22j except for the non-detachable portion, and hangs down in the manhole 20 while being suspended from the non-detachable portion. Thus, the odor blocking device B is opened, and the worker can go down to the bottom of the manhole 20 by using the platform 20b and go to the sewer etc. located below the manhole 20, and work such as cleaning of the sewer Can be undertaken.

When the work such as sewerage is completed by the worker, the worker runs up the step 20b, pulls up the lower mounting portion lower end 22k and grasps the operation component, for example, rotates from the left end to the right end, The attachment part lower end 22k of the flexible resin sheet 22A is coupled and connected to the attachment part upper end 22j, the lid 21 is placed in the original position, that is, the lid holding frame 21a, and the odor blocking device B is closed, that is, It is configured to be sealed so that bad odors and unpleasant odors from sewers do not flow out to the road surface E. Here, impurities such as sewage, muddy water, water leakage, dust, earth and sand, and pebbles are cut off from the gap formed by the lid 21 and the lid holding frame 21a or the gap formed by the lid holding frame 21a and the road surface E. It falls to the bottom surface of the device B and stays or accumulates on the discharge lid 23a, particularly at the position indicated by the line J of the plastic material blocking portion 22B of the odor blocking device B as shown in FIG. 9B. When the impurity F is deposited on the discharge lid 23a in a predetermined amount or more, the spring-loaded hinge 23b is forcibly wound by the load force of the discharge lid 23a and the discharge lid 23a is Opened as shown in FIG. 9B, the impurity F falls in the direction of arrow H. Thus, the impurity F falls into a sewer channel or sewer system disposed below. Therefore, the discharge lid 23a is restored by the reaction force of the linear spring of the hinge with spring 23b, and closes the central hole 22i.

On the other hand, daily miscellaneous water, filth, and the like are constantly flowing into the sewer and the sewer, and various odors such as bad odor and nasty odor rise from the sewer and the sewer, and rise through the manhole 20. Here, in the odor blocking device B, the discharge lid 23a of the plastic material blocking portion 22B formed on the bottom portion thereof completely closes the central hole 22i. The odor rising from the sewer and the sewer is cut off by the discharge lid 23a without flowing out or spouting to the road surface E, and complaints from the surrounding residents due to a strange odor or bad odor can be eliminated.

In addition, since the gap S is always secured between the wall surface 20a and the plastic material blocking portion 22B, it is possible to follow the deformation of the roadbed even during an earthquake or wheel load, and has a feature that can withstand long-term use. .

Next, a second embodiment of the odor blocking device and its mounting structure according to the present invention will be described in detail with reference to FIGS. 10 (a) and 10 (b).
The said Example 2 shows the example at the time of making it a trap as a structure of the discharge hole flange part 23A.

FIG. 10A is an overall perspective view of the discharge hole flange portion 23A, showing the entire trap and showing the trap water guiding portion 23B and the trap receiving portion 23C. FIG.10 (b) is sectional drawing of the arrow KK line direction of Fig.10 (a).

The trap water guiding portion 23B is composed of a substantially cylindrical main body 23f and a plurality of legs 23g standing and fixed at the lower end of the substantially cylindrical main body 23f. An upper end of the substantially cylindrical main body 23f is formed with a flange 23h projecting outwardly in which a groove 23i for interposing the flexible resin sheet blocking portion 22d is provided.
Then, after inserting the flexible resin sheet blocking part 22d into the groove 23i, a bolt is inserted from the upper surface of the flange 23h, and a fastening part 23j is provided for tightening with a nut. On the other hand, the trap receiving portion 23C is formed in, for example, a substantially basin shape, and has a function of temporarily retaining and storing sewage, muddy water, or water leakage flowing from the road surface E.

Other configurations and operations are substantially the same as those described in the above-described embodiment shown in FIG.

It is a vertical sectional view which shows the state which attached the odor cutoff device which concerns on this invention to the wall surface of the manhole under the road surface. It is a perspective view which shows the structure outline | summary in embodiment of the odor cutoff apparatus which concerns on this invention. It is drawing which shows the structure of the discharge hole flange part arrange | positioned in the approximate center of the bottom face of the odor cutoff device which concerns on this invention, Comprising: (a) is an expanded sectional view of the arrow AA direction of FIG. ) Is an enlarged plan view. It is a vertical sectional view of the important section showing the 1st example of the attachment structure of the odor blocking device concerning the present invention. It is the top view seen from the upper direction of the said FIG. It is drawing which shows the 2nd example in the attachment structure of the odor cutoff device based on this invention, Comprising: (a) is a vertical sectional view, (b) is the additional structural example in the attachment structure shown to (a). FIG. It is the top view seen from the upper direction of the said FIG.6 (b). It is a top view which shows the arrangement configuration of the lid | cover installed on the road surface in the case of attaching the odor cutoff device based on this invention to a manhole. BRIEF DESCRIPTION OF THE DRAWINGS It is drawing which shows the structure outline | summary in Example 1 of the odor shielding apparatus which concerns on this invention, Comprising: (a) is a vertical sectional view, (b) is when the sewage etc. which accumulated on the plastic material cutoff part fall to a manhole. It is a principal part vertical sectional view which shows operation | movement of this discharge lid. It is drawing when the trap in Example 2 of the odor cutoff device concerning this invention is employ | adopted, Comprising: (a) is a perspective view which shows the structural example of this trap, (b) is the arrow K of (a). It is sectional drawing of a -K line direction. It is a vertical sectional view showing the 1st example in the odor blocking device in the prior art. It is a vertical sectional view showing the 2nd example of hinge part reinforcement structure of an odor blocking sheet in conventional technology.

Explanation of symbols

20 Manhole 20a Manhole Wall 20b Manhole Step 21 Manhole Cover 21a Manhole Cover Holding Frame 22 Flexible Resin Sheet 22A Flexible Resin Sheet Cut Part 22B Plastic Material Cut Part 22a Upper End of Flexible Resin Sheet Mounting Part ( Vertical wall)
22b Flexible resin sheet attachment part lower end (vertical wall surface part)
22c Detaching member for flexible resin sheet 22d Flexible resin sheet blocking part (bottom part)
22e Non-detachable member of flexible resin sheet 22f Right end 22g of removable member Left end 22h of removable member Peripheral portion 22i of central hole of flexible resin sheet blocking portion Central hole 22j of flexible resin sheet blocking portion Flexible resin Sheet mounting part upper end 22k Flexible resin sheet mounting part lower end 22m Flexible resin sheet attaching / detaching member 22n Plastic material blocking part slope 22p Plastic material blocking part flat surface 23 Discharge hole flange part 23A Discharge hole flange part 23B Trap water guiding portion 23C Trap receiving portion 23a Discharge lid 23b for discharge hole flange portion Hinge with spring 23c for discharge hole flange portion Flange 23d for discharge hole flange portion Joint part 23e for discharge hole flange portion Hinge 23f for discharge hole flange portion Trap water conveyance portion Approximate cylindrical body 23g Trap water guide leg 23h Trap water guide rod 23i Trap water guiding portion groove 23j Trap water guiding portion tightening part 24 Substantially ring-shaped presser fitting 24a Taper washer 25 of substantially ring-shaped presser fitting 25 Anchor bolt 26 Attaching plate 27 Sectional V-shaped stainless steel bracket 27a Sectional V-shaped stainless steel Inner piece 27b Outer piece 27c of the stainless steel fitting with a substantially V-shaped cross section Convex portion 28 of the outer piece of the stainless steel fitting with a substantially V-shaped cross-section U-shaped sandwiching fitting 29 Urethane foam material B Odor blocking device C Welded portion E Road surface F Impurities

Claims (6)

Whole is flexible resin sheet formed in a substantially dish-shaped or a substantially conical shape, constituted by a vertical wall portion and a bottom portion, said vertical wall portion is mounted the top end, it is attached subordinate Tan及 beauty bottom surface A device comprising a flexible resin sheet cutoff part, comprising a non-detachable part in part between the upper end of the mounting part and the lower end of the mounting part, and a detachable member that separates and combines the two, An odor blocking device comprising a discharge hole flange portion having a discharge lid that allows a central hole to be opened and closed by depositing or dropping an impurity at approximately the center of a flexible resin sheet blocking portion. The discharge hole flange is a discharge lid that allows the central hole to be opened and closed by depositing or dropping impurities, and a lower surface of a flange that is a toroid having a substantially rectangular cross section, and is connected to the base end of the discharge lid. The odor blocking device according to claim 1, comprising: a hinge with a spring that is fixed to a peripheral edge of a central hole, and a flange that is formed of an annular body having a substantially rectangular cross section with the hinge with a spring. . The odor blocking device according to claim 1 or 2, wherein the odor blocking device is fixed to the upper end surface of the flexible resin sheet formed in a substantially dish shape or a substantially conical shape fixed to the wall surface of the manhole and has a predetermined width. A mounting structure for an odor blocking device, comprising: a substantially ring-shaped pressing metal fitting having an anchor bolt that penetrates and fixes the upper end of the mounting portion from the surface of the substantially ring-shaped pressing metal fitting. It is an odor blocking device formed entirely in a substantially dish shape or a substantially conical shape, comprising a substantially vertical wall surface portion with a flexible resin sheet, the substantially vertical wall surface portion having a mounting portion upper end and a mounting portion lower end, And the bottom surface portion fixed to the flexible resin sheet is formed of a plastic material cut-off portion, and has a non-detachable portion between the upper end of the mounting portion and the lower end of the mounting portion, and separates and combines them. An odor blocking device comprising a discharge hole flange portion having a discharge lid which is provided with a desorption member and is capable of opening and closing a central hole by depositing or dropping an impurity body at substantially the center of the plastic material blocking portion. . The discharge hole flange portion includes a discharge lid that freely opens and closes the central hole by depositing or dropping impurities, and a hinge with a spring fixed to the lower surface of the peripheral edge of the central hole and connected to the base end of the discharge lid. The odor cutoff device according to claim 4, wherein the odor cutoff device is provided. A plastic material blocking part for welding and fixing the lower end of the mounting part of the flexible resin sheet fixed to the wall surface of the manhole in an odor blocking apparatus having a substantially dish-like or substantially conical shape as claimed in claim 4 or 5. A mounting structure for an odor blocking device, comprising: an anchor bolt penetrating / fixing from the top surface of the upper end of the mounting portion of the flexible resin sheet.

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