JP2001303603A - Heat insulating and deodorizing device for manhole - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems of a conventional manhole only fitted with a cover, such as a perforation phenomenon on a road surface, caused because the snow around the manhole cover and on the top surface thereof is melted by the warming of the manhole cover under above-zero temperature conditions within even in the case where the temperature on the road surface is below zero in winter. SOLUTION: A heat insulating and deodorizing device composed of a downflow water receiving part 2 and a valve part 3 is installed in the lower part of the manhole cover. Consequently, the insulation against the below-zero temperature on the road surface and the above-zero temperature within the sewerage prevents the snow from being melted and allows the perforation phenomenon to be inhibited.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel heat insulating and deodorizing device for manholes.

[0002]

2. Description of the Related Art A conventional manhole has been constructed for several decades since the sewer system became widespread in civil life, but has a configuration in which a lid I2 is attached to a manhole I as shown in FIG.

[0003]

The above-mentioned prior art has the following problems. 1. In winter, even if the temperature on the road surface is negative, the plus temperature in the sewer heats the manhole cover, so that the upper surface of the manhole cover and the surrounding snow are melted, and the so-called perforation phenomenon on the road surface is reduced. generate. Naturally, such a phenomenon becomes an obstacle to traffic. In other words, no perforating measures have been taken to prevent perforating phenomena occurring on the road due to the heat of the sewer (around +10 degrees) during the winter period. 2. In the unlikely event that gas is generated inside the sewer and the internal pressure in the pipe rises, the odor rises and spreads on the ground through the manhole cover.

[0004] The present invention has been made in view of such problems of the prior art, and has as its object to provide the following. By installing the device of the present invention below the manhole cover, the minus temperature on the road surface and the plus temperature in the sewer can be cut off, and the so-called perforation phenomenon on the road surface can be eliminated without melting the snow. The present invention can be used throughout the year without removal. During periods other than the winter period, rainwater flowing from the hole of the manhole cover with the double lid can be dropped into the sewer main pipe when the rainwater accumulates in the manner of a flush toilet. In the unlikely event that gas is generated inside the sewer,
Even if the internal pressure in the tube rises, the inner lid of the double lid opens upward and gas can be vented. In addition, since the double lid is always closed by the balance with the weight, it is possible to prevent the odor in the sewer from rising and spreading to the ground.

[0005]

Means for Solving the Problems In order to achieve the above object, the present invention is as follows. 1. According to the first aspect of the present invention, the flowing water receiving portion 2 and the valve portion 3
The falling water receiving part 2 is composed of a falling water receiver 2A formed in a trumpet shape upward, a vertical pipe 2B communicating with and hanging down from the center of the falling water receiver, and an outside around the upper part of the falling water receiver 2A. The valve part 3 is constituted by a vertical pipe 2B in the falling water receiving part.
When the amount of rainwater flowing into the downflow receiving portion 2 exceeds a predetermined amount, the valve portion 3 is opened to allow rainwater to flow down, cut off heat in the sewerage during the winter period, and It is characterized in that when gas is generated and the internal pressure in the pipe increases, the pipe is opened to release the gas to the outside air.

[0006] 2. The invention according to claim 2 includes a flowing water receiving portion 2 and a valve portion 3. The falling water receiving part 2 is composed of a falling water receiver 2A which is made of a synthetic resin or the like having heat insulating properties and is formed in a trumpet shape upward, and a vertical pipe 2 which is communicated and suspended at the center of the falling water receiver.
B, and a mounting edge 2C horizontally and outwardly provided around the upper part of the falling water receiver 2A, and B. The valve section 3 is composed of a first valve 3A, a second valve 3B, and a weight 3C. The first valve 3A has a first valve body 3A1,
The first valve body 3A1 is composed of a first fulcrum 3A2, and the first valve body 3A1 has a disk 3A11 having a diameter longer than the diameter of the vertical pipe 2B in the falling water receiving portion, and an exhaust for the disk having a diameter shorter than the diameter of the vertical pipe 2B. The first fulcrum 3A2 is formed of a circular hole 3A12, and the first fulcrum 3A2 is provided on the outer periphery of the first valve 3A so as to extend upward, and the first fulcrum 3A21 is provided on the outer periphery of the vertical pipe 2B in the falling water receiving portion. 1 Upper hardware 3A22
, And a first horizontal pin 3A23 connecting these hardware, the second valve 3B is composed of a second valve element 3B1 and a second fulcrum 3B2, and the second valve element 3B1 is provided in the first valve 3A. Vertical pipe 2B longer than the diameter of exhaust hole 3A12
The disk is configured to have a diameter smaller than the diameter of
The fulcrum 3B2 is provided on the upper surface of the first valve 3A with a second lower metal component 3B21 connected downward at a position near the first lower metal component 3A21 in the first valve 3A, and a second valve element 3B.
A first upper metal member 3B22 protruding from the outer periphery of the first metal member 1 and a second horizontal pin 3B23 connecting these two metal members;
The weight 3C is composed of a support rod 3C1 projecting outward from the first lower hardware 3A21 in a direction orthogonal to the first horizontal pin 3A23 of the first lower hardware, and a weight body 3C2 attached to the support rod. C. The state of attachment to the manhole I is characterized in that the attachment edge 2C is configured to be clamped between the upper opening of the manhole and the lid.

[0007] 3. According to a third aspect of the present invention, in the second aspect of the invention, the weight body 3C2 is formed in a short laterally cylindrical shape, and is configured to be able to move in and out along the support rod 3C1.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on embodiments with reference to the drawings. Reference numeral 1 denotes a heat insulating and deodorizing device for a manhole according to the present invention, which comprises a flowing water receiving portion 2 and a valve portion 3. I is a known manhole to which the heat insulating and deodorizing device 1 for a manhole is attached, I1 is a sewer, and I2 is a lid.

A. The falling water receiving portion 2 is composed of a falling water receiver 2A formed upwardly in a trumpet shape using synthetic resin or the like having heat insulating properties as a material, a vertical pipe 2B communicating and hanging down the center of the falling water receiver, and a falling water receiver. It is composed of a mounting edge 2C which is horizontally arranged outwardly around the upper part of 2A.

B. The valve unit 3 includes a first valve 3A and a second valve 3B
And weights 3C. a. The first valve 3A includes a first valve body 3A1 and a first fulcrum 3A2.
It is composed of I. The first valve body 3A1 includes a disk 3A11 having a diameter longer than the diameter of the vertical pipe 2B in the flowing water receiving portion, and an exhaust hole 3A12 formed in the disk with a diameter shorter than the diameter of the vertical pipe 2B. . B. The first fulcrum 3A2 includes a first lower metal fitting 3A21 continuously connected to the outer periphery of the first valve 3A upward and a first upper metal fitting 3A protruding from the outer circumference of the vertical pipe 2B in the flowing water receiving portion.
22 and a first horizontal pin 3A23 connecting these hardware.
It is composed of

B. The second valve 3B includes a second valve body 3B1 and a second fulcrum 3B2. I. The second valve body 3B1 is configured as a disk having a diameter longer than the diameter of the exhaust hole 3A12 in the first valve 3A and shorter than the diameter of the vertical pipe 2B. B. The second fulcrum 3B2 is provided on the upper surface of the first valve 3A.
A second lower metal fitting 3B21 connected downward at a position near the first lower metal fitting 3A21 in the valve 3A;
Second upper metal member 3B22 protruding from the outer periphery of valve body 3B1
And a second horizontal pin 3B23 for connecting these hardware. In the drawing, 3B24 is an opening into which the second upper metal fitting 3B22 is inserted. c. The weight 3C is composed of a support rod 3C1 projecting outward from the first lower hardware 3A21 in a direction orthogonal to the first horizontal pin 3A23 of the first lower hardware, and a weight body 3C2 attached to the support rod. It is configured. In addition, the weight body 3C2 is formed in a short laterally cylindrical shape, and can be configured to be able to move in and out along the support rod 3C1. As a result, it is possible to adjust the weight balance of the first valve 3A with respect to the vertical pipe 2B in the flowing water receiving portion, and to perform the operation in the best condition. C. In the attachment state of the present invention to the manhole I, the attachment edge 2C is sandwiched between the upper opening of the manhole and the lid.

[0012]

Since the present invention is configured as described above, it has the following effects. 1. Effect on Rainwater or Snowmelt Water Referring to FIG. 4, when the amount of rainwater or snowmelt water exceeds a certain level, the first valve 3A and the second valve 3B support the first fulcrum 3A2 against the weight body 3C2. And let rainwater and snowmelt water flow down. 2. Effect on Heat Dissipation from Drain Referring to FIG.
Since the valve 3A and the second valve 3B seal the lower end of the vertical pipe 2B in the flowing water receiving portion 2, heat is radiated from the flowing water receiving portion 2.
Is guided downward in an inverted U-shape on the lower surface of the falling water receiver 2A. As a result, the minus temperature on the road surface and the plus temperature in the sewer can be cut off, and the so-called perforation phenomenon on the road surface can be eliminated without melting the snow.

3. Effect on Odor from Drainage Referring to FIG. 6, the action of the weight body 3C2 causes the first
Since the valve 3A and the second valve 3B seal the lower end of the vertical pipe 2B in the sewage receiving section 2, the odor is reduced.
Is guided downward in an inverted U-shape on the lower surface of the falling water receiver 2A. 4. Effect on Gas from Wastewater Referring to FIG. 7, when the amount of gas becomes equal to or more than a certain value, only second valve 3B opens with second fulcrum 3B2 as a fulcrum, and discharges gas upward. 5. Since the mounting state of the present invention to the manhole I is configured so that the mounting edge 2C is sandwiched between the upper opening of the manhole and the lid, it is extremely easy and reliable. 6. In addition, it has effects such as being inexpensive to manufacture, easy to assemble because of a small number of parts, and economical.

[Brief description of the drawings]

FIG. 1 is an overall perspective view.

FIG. 2 is an enlarged exploded perspective view of a main part in which a part around the first valve is cut away.

FIG. 3 is an enlarged exploded perspective view of a main part in which a part around a second valve is cut away.

FIG. 4 is a vertical cross-sectional view illustrating an action on rainwater, snowmelt water, and the like.

FIG. 5 is a longitudinal sectional view for explaining an effect on heat radiation from drainage.

FIG. 6 is a vertical cross-sectional view for explaining an effect on a bad smell from waste water.

FIG. 7 is a longitudinal sectional view for explaining an action on gas from waste water.

FIG. 8 is a longitudinal sectional view illustrating a conventional state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat insulation and deodorizing device for manholes 2 Flowing water receiving part 2A Flowing water receiver 2B Vertical pipe 2C Mounting edge 3 Valve part 3A First valve 3B Second valve 3C Weight

Claims (3)

[Claims] 1. A falling water receiving part (2) comprising a flowing water receiving part (2) and a valve part (3), wherein the flowing water receiving part (2) has a falling water receiving part (2A) formed in a trumpet shape upward, A vertical pipe (2B) hanging down from the center of the water receiver and a falling water receiver (2B)
A) is constituted by a mounting edge (2C) which is horizontally arranged outwardly around the upper part of (A), and the valve part (3) is mounted on a vertical pipe (2B) in the falling water receiving part, and the valve part is provided. In (3), when the amount of rainwater flowing into the flowing water receiving part (2) exceeds a predetermined amount, the rainwater is released by opening it, shutting off heat in the sewer in winter and generating gas in the sewer. A heat insulating and deodorizing device for manholes, which is configured to open and release gas to the outside air when the internal pressure in the pipe increases. 2. A falling water receiving part (2) and a valve part (3). The falling water receiving part (2) is formed in a trumpet shape upward using synthetic resin or the like having heat insulating properties as a raw material. A falling water receiver (2A), a vertical pipe (2B) communicatively suspended at the center of the falling water receiver, and a mounting rim (2) horizontally extending outwardly around the upper part of the falling water receiver (2A). 2C), and the valve section (3) includes a first valve (3A), a second valve (3B),
The first valve (3A) is composed of a first valve body (3A1) and a first fulcrum (3A2), and the first valve body (3A1) is a vertical valve in a flowing water receiving portion. A disk (3A11) having a diameter longer than the diameter of the pipe (2B), and an exhaust hole (3A12) formed on the disk with a diameter shorter than the diameter of the vertical pipe (2B).
The first fulcrum (3A2) is provided with a first valve (3A)
The first lower hardware (3A2)
1), a first upper metal fitting (3A22) protruding from the outer periphery of the vertical pipe (2B) in the flowing water receiving portion, and a first horizontal pin (3A23) connecting these two metal fittings. (3B) includes a second valve element (3B1) and a second fulcrum (3B2), and the second valve element (3B1) includes a first valve element (3B1).
The valve (3A) is configured as a disk having a diameter longer than the diameter of the exhaust circular hole (3A12) and shorter than the diameter of the vertical pipe (2B), and the second fulcrum (3B2) is connected to the first valve (3B2).
A) On the upper surface of (A), a second lower hardware (3B21) continuously connected downward at a position near the first lower hardware (3A21) in the first valve (3A), and an outer periphery of the second valve body (3B1). And a second horizontal pin (3B23) connecting these two hardware. The weight (3C) is attached to the first lower hardware (3A21) by the first lower hardware (3A21). A support rod (3C) projecting outward in a direction orthogonal to the first horizontal pin (3A23)
1) and a weight body (3C2) attached to the support rod. The attachment state to the manhole (I) is determined by an attachment edge (2
C) heat insulation for manholes, wherein C) is sandwiched between an upper opening of the manhole and a lid.
Deodorant device. 3. The heat insulation for manholes according to claim 2, wherein the weight body (3C2) is formed in a laterally short column shape, and is configured to be able to move in and out along the support rod (3C1).
Deodorant device.