JP2020012333A - Ventilation chamber for manhole - Google Patents

Abstract

To provide a chamber that can be installed if there is a gap of at least 55 mm between an upper end of a manhole and a lower end of a chute.SOLUTION: A ventilation chamber A for manholes includes an air vent, a first chamber 1 and a second chamber 5. The first chamber 1 includes an air outlet that is disposed between a manhole and a chute for a silo, and is in a flat shape with a top plate 101. The second chamber 5 includes an air inlet, and is in a polyhedral shape with a roof plate 500 that slopes with respect to the top plate 101 of the first chamber 1. The air outlet connects to an opening of the manhole. The second chamber 5 includes an intake pipe 6 that connects to a duct.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a chamber for sending air for manhole intake and exhaust.

  In order to supply fresh air to the silo and / or discharge contaminated air from the site, a method of inserting a hose into a manhole using a blower and bellows (to be a duct) for intake and exhaust is used.

  For example, as shown in FIGS. 8 and 9, some silo companies cannot secure a gap between the chute and the manhole, so that the duct may be forcedly inserted. In this case, since the duct is used in a folded state, there is a problem that the efficiency of intake and exhaust is very poor.

  In addition, although not shown, at the site, since the manhole diameter is different depending on the customer, sometimes it is difficult to adjust the diameter of the duct, and in the worst case, when the work is performed when the diameter of the manhole does not match the diameter of the duct, for example, In addition, fresh air or odor, contaminated air, etc., leaked from the gap between the manhole and the duct, causing adverse effects such as occupational accidents, deterioration of working environment, pollution, and occurrence of illness.

  If the gap between the manhole diameter and the duct diameter is, for example, 55 mm or less, there is a problem that the installation of the chamber (duct) is troublesome and cannot be used.

In view of the above site situation, the preceding literature was investigated. Japanese Patent No. 6340130 has an invention composed of a lower lid having a fixed frame fitted into a mouth (opening) of a manhole, an upper lid adhered to the lower lid, and a duct attached to the upper lid. There is a gazette (Reference 1). The present invention is characterized in that a handle is provided on each of the upper and lower lids so that the upper and lower lids can be freely opened and closed from any direction of up and down. is there. In addition, the upper and lower cover plates are used, so that they can be used regardless of the diameter of the duct. Therefore, there is an advantage that a part of the problem due to the difference in the aperture, which is the object of the present invention, can be achieved.
Japanese Patent No. 6340130

  Document 1 has an advantage that, as described above, a part of the problem due to the difference in aperture can be achieved. However, since the duct is arranged immediately below the shooter (immediately above the manhole), there is a problem that it is difficult to handle the shooter and / or the duct and that it cannot be used depending on the structure of the shooter.

In view of the above, the present invention, at least between the upper end of the manhole and the lower end of the shooter,
Provide a chamber that can be installed if there is a 55 mm interval. In addition, since the opening of the annular bottom plate has a different manhole diameter according to the customer, the opening of the annular bottom plate is adjusted to the smallest manhole diameter, and the annular bottom plate is configured to be larger than the manhole diameter.

  The means for that is shown in claim 1-5.

The invention according to claim 1 is a chamber provided with an intake / exhaust port,
A flat first room with an exhaust port provided between the silo manhole and the shooter, and a thin, pyramid-shaped second room with an intake port are provided.
The exhaust port leads to the opening of the manhole,
The second room is equipped with a suction tube connecting the duct,
This is a suction and exhaust chamber for manholes.

  Therefore, in the first aspect, it is possible to provide a chamber that can be installed if there is at least an interval of 55 mm between the upper end (opening) of the manhole and the lower end of the shooter. In addition, since the opening of the annular bottom plate differs in the manhole diameter depending on the customer, it is convenient to adjust to the smallest size of the manhole diameter and to make the annular bottom plate larger than the manhole diameter.

  According to a second aspect of the present invention, the first room is a flat housing provided on an annular bottom plate having an exhaust port, and a handle is provided on the bottom plate and the housing, and the handle is provided outside the bottom plate (annular plate). This is a manhole intake / exhaust chamber characterized by being extended.

  Therefore, according to the second aspect, the features described in the first aspect can be achieved, and the first room having the optimal structure can be provided.

  The invention according to claim 3, wherein the second room is a thin pyramid housing provided on a square bottom plate, and connects the inclined roof plate, a front plate facing the roof plate, and both ends of the roof plate and the front plate. It is composed of two side plates and a bottom plate, and the opening passage of the bottom plate is connected to the first room, and the front plate is a suction / exhaust chamber for a manhole, which is provided with a suction cylinder. .

  Therefore, according to the third aspect, it is possible to provide the second room having the optimal structure in addition to achieving the features described in the first aspect.

  According to a fourth aspect of the present invention, there is provided a manhole intake / exhaust chamber, wherein a second room connected to the first room is formed, and the second room is provided above the first room.

  Therefore, in the fourth aspect, the first and second rooms having the optimal structure can be provided in addition to achieving the features described in the first aspect.

  According to a fifth aspect of the present invention, there is provided a manhole intake / exhaust chamber, wherein the roof shingle of the second room has a downward flow shape and is connected to the first room, and the roof shingle functions as an air guiding plate. is there.

  Therefore, according to the fifth aspect, it is possible to provide the roof panel of the second room having the optimum structure, in addition to achieving the features described in the first aspect.

  According to a sixth aspect of the present invention, there is provided a manhole intake / exhaust chamber, wherein the bottom body is a single plate material composed of an annular plate and a rectangular plate.

  Therefore, according to claim 5, it is possible to provide the bottom part (bottom plate) having an optimal structure in addition to achieving the features described in claim 1.

An overhead view of the manhole intake / exhaust chamber (this invention) with a part cut away Side view of the present invention Plan view of the present invention Explanatory drawing describing the optimal dimensions in FIG. Bottom view of the present invention An overhead view showing an example of a state in which equipment required for the present invention is attached. Overhead view showing an example of the use state of the present invention An overhead view showing a state in which a chamber (without a duct) is installed between a manhole and a shooter in a use state of the present invention. A bird's-eye view of a conventional duct inserted directly into a manhole Overhead view showing Fig. 8 from the other side

  Hereinafter, a description will be given with reference to the drawings showing a preferred embodiment of the present invention.

  In the drawings showing the configurations of FIGS. 1 to 5, a chamber A for suction and exhaust of manholes includes a first chamber 1 of a flat housing (flat shape) provided between a manhole B of a silo and a shooter C; An annular bottom plate 2 (bottom portion) below the first room 1 and an exhaust port 3 (opening) of the annular bottom plate 2 are connected to the inside of the first room 1. That is, the air H carried to the first room 1 is supplied from the exhaust port 3 into the manhole B. The other opening of the first room 1 is connected to an opening passage (in the room) of the second room 5 described later. Note that the contaminated air has a route opposite to that of the air H carried to the first room 1. The first room 1 has a configuration of a side plate 100 forming a side surface in three directions and a top plate 101 forming an upper surface, and in principle, an exhaust port 3 provided in a lower surface, and other side surfaces (remaining in three directions). (Referring to the connection passage side in the direction) is open. Although not shown, a plate material may be provided on the lower surface to cover the lower surface, but the exhaust port 3 is provided. In the drawing, reference numeral 4 denotes a handle, and four U-shaped handles 4 are provided on the bottom plate 2 (one example), and a handle portion of the handle 4 extends outside the bottom plate 2. . Therefore, it is advantageous that the handle 4 can be easily inserted into the gap between the manhole A and the shooter C or can be removed from the gap, and it is useful for carrying.

  The second room 5 is a thin pyramid housing (thin pyramid shape), and has a roof plate 500 (roof portion) having a flat top plate portion, a front plate 501 facing the roof plate 500, and a roof plate. An outer shell is formed by two side plates 502 and 503 connecting both ends of the front plate 500 and the front plate 501, and for example, a square bottom plate 200 formed by extending the bottom plate 2 or the like. The opening of the second room 5 (opening passage “no sign”) is connected to another opening of the first room 1 (inside the room). The front plate 501 is provided with a suction cylinder 6 for sucking air. Therefore, the air sucked from the suction tube 6 flows from the opening (not shown) of the front plate 501 to the first room 1 from the opening passage in the second room 5. The contaminated air passes through the first room 1 and is carried from the opening passage to the second room 5. That is, the route is opposite to the flow of the air. The lower surface of the second room 5 is open in principle. However, there is a possibility that this opening is closed with a plate material. In the figure, reference numeral 505 denotes a top plate. The inclination of the roof plate 500 serves as an air guide plate, and functions as an air guide plate flowing through the second room 5.

  The bottom plates 2 and 200 may be a single plate formed of an annular plate and a rectangular plate, or a composite plate such as two plates.

  Note that the annular bottom plate 2 has a size that conceals the openings B1 of all the manholes B, and is larger than the size of the lower surface of the first room 1 and is stably installed on the manhole B.

  FIG. 3-1 shows preferred dimensions of the present invention, but is an example. The diameter of the bottom plate 2 is 500 to 700 mm, preferably 600 mm. The height of the first room 1 (including the bottom plate 2) is 45 to 55 mm, preferably 50 mm, the width in the short direction (A) is 300 to 350 mm, preferably 350 mm, and the width in the longitudinal direction (B) is 300 to 350 mm. And preferably, 350 mm. The length of the inclined roof 500 (including the bottom plate 2) of the second room 5 is 330 to 390 mm, preferably 376 mm, and the height of the front plate 501 is 320 to 390 mm, preferably 370 mm. Value) is 180-250 / 280-340 mm, preferably 200/300 mm. The diameter of the suction tube 6 is 250-350 mm, preferably 300 mm. The suction cylinder 6 is provided at the center of the front plate 501. Therefore, the suction air (fresh air) passes from the suction cylinder 6 having the high step to the manhole B from the opening 100 of the first room 1 via the bottom plate 200 which has become lower by one step and the bottom plate 2 on the same surface. (Even if the duct 7 has a distance), the suction air flows smoothly without resistance. On the other hand, the contaminated air passes through the bottom plate 200, which is one step higher than the lowest bottom plate 2, and crosses the high step to reach the duct 7 from the suction cylinder 6. Although the fan 8 is separated, a process with a small resistance is obtained so that the fan 8 at a distant place or, in some cases, the fan 8 of low power can be sucked.

  As shown in FIGS. 5 to 7, the suction cylinder 6 is provided with a duct 7. The duct 7 is provided with a fan 8.

  Hereinafter, an example of each preferable use example shown in FIGS. 5 to 7 will be sequentially described.

  FIGS. 5 and 6 show an example of a fully-equipped and always usable state (the same applies hereinafter). In FIG. 5, the suction cylinder 6 is provided with a base end of a duct 7, and a distal end of the duct 7 is provided with a fan 8. Therefore, it can be used at any time. FIG. 6 is substantially the same as FIG. 5, but shows the essential parts.

  FIG. 7 shows that the first chamber 1 is inserted into the gap H between the manhole B and the shooter C, and the exhaust port 3 (opening) of the first chamber 1 is aligned with the opening (not shown) of the manhole B, and Are set so as to be concealed by the bottom plate 2, and the two are tightened using the stopper D. Therefore, the contaminated air does not escape from the opening of the manhole B, or the fresh air does not leak. Further, the exhaust port 3 of the first room 1 can be used even if the diameter (opening) of the manhole B is large or small.

  In this state, the suction of fresh air drives the fan 8 and sends air into the manhole B by the following route. Duct 7 → Suction cylinder 6 → Opening of second room 5 (no sign) → Inside of second room 5 → Opening 100 (connection passage) 1 → Inside of first room 1 → Exhaust port 3 → Opening of manhole B → Flow into manhole B.

  The exhaust of contaminated air is the reverse of the above-mentioned intake of fresh air. It is also considered that the leakage is the same.

  Each of the embodiments described above is a description of a preferred example of the present invention, and is not limited to each embodiment or the drawings. Therefore, a structure in which a part of the configuration is changed within the spirit of the invention, a structure that can achieve the same features and effects, and the like are within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 First room 100 Side plate 101 Top plate 2 Annular bottom plate 200 Square bottom plate 3 Exhaust port 4 Handle 5 Second room 500 Roof plate 501 Front plate 502 Side plate 503 Side plate 504 Top plate 6 Suction cylinder 7 Duct 8 Fan A Champer B Manhole B1 Opening C Shooter

In view of the above, the present invention provides a chamber that can be installed if there is at least a 55 mm gap between the upper end of the manhole and the lower end of the shooter .

The invention according to claim 1 is a chamber provided with an intake / exhaust port,
A flat-shaped first room having a top plate provided with the exhaust port disposed between a manhole and a shooter of a silo; and a roof plate having the intake port and inclined with respect to the top plate of the first room. Comprising a polyhedral second room having
The exhaust port leads to the opening of the manhole,
The second room is equipped with a suction tube connecting the duct,
A chamber for intake and exhaust of the manhole, which was characterized in that it was.

The invention according to claim 3 is characterized in that the second room is provided on a square bottom plate , and the second room is connected to a roof plate, a front plate facing the roof plate, and both ends of the roof plate and the front plate. A side plate and a square bottom plate, and a polyhedron-shaped housing, an opening passage of the bottom plate is connected to the first room, and the front plate is provided with a suction cylinder, It is a chamber for intake and exhaust.

According to a sixth aspect of the present invention, there is provided a manhole intake / exhaust chamber , wherein the annular bottom plate and the square bottom plate are formed of a single plate.

Therefore, in the sixth aspect , the features described in the first aspect can be achieved, and in addition, a bottom (bottom plate) having an optimal structure can be provided.

The second room 5 is a polyhedral housing , and has a roof panel 500 (roof section) having a flat top panel, a front panel 501 facing the roof panel 500, and a roof panel 500 and a front panel 501. The outer side is formed by two side plates 502 and 503 connecting both end sides of the base plate, and for example, a square bottom plate 200 formed by extending the bottom plate 2 or the like. The opening of the second room 5 (opening passage “no sign”) is connected to another opening of the first room 1 (inside the room). The front plate 501 is provided with a suction cylinder 6 for sucking air. Therefore, the air sucked from the suction tube 6 flows from the opening (not shown) of the front plate 501 to the first room 1 from the opening passage in the second room 5. The contaminated air passes through the first room 1 and is carried from the opening passage to the second room 5. That is, the route is opposite to the flow of the air. The lower surface of the second room 5 is open in principle. However, this opening may be closed by a plate material. In the figure, reference numeral 505 denotes a top plate. The inclination of the roof plate 500 serves as an air guide plate, and functions as an air guide plate flowing through the second room 5.

Note that the annular bottom plate 2 has a size that conceals the openings B1 of all the manholes B, and is larger than the size of the lower surface of the first room 1 and is stably installed on the manhole B. In addition, since the diameter of the exhaust hole 3 (opening) of the annular bottom plate 2 differs depending on the customer, the diameter of the manhole B is adjusted to the smallest size of the diameter of the manhole B, and the annular bottom plate 2 is configured to be larger than the diameter of the manhole B. I do.

Claims (6)

A chamber with an intake and exhaust port,
A flat first room with the exhaust port provided between the silo manhole and the shooter, and a thin, pyramid-shaped second room with the intake port are provided,
The exhaust port is connected to an opening of the manhole,
The second room includes a suction tube connecting the duct,
A chamber for intake and exhaust of manholes.   The first room is a flat housing provided on an annular bottom plate provided with the exhaust port, and a handle is provided on the annular bottom plate and the housing, and the handle extends outside the annular bottom plate. The air intake / exhaust chamber for manholes according to claim 1, wherein:   The second room is a thin pyramid housing provided on a square bottom plate, a sloped roof plate, a front plate facing the roof plate, and two sides connecting both ends of the roof plate and the front plate. The manhole according to claim 1, comprising a face plate and the bottom portion, wherein an opening passage of the bottom plate is connected to the first room, and the front plate includes the suction cylinder. Chamber for intake and exhaust.   2. The chamber according to claim 1, wherein the second room is connected to the first room, and the second room is provided above the first room. 3.   2. The air intake / exhaust system for manholes according to claim 1, wherein the roof panel of the second room has a downward flow shape and is connected to the first room, and the roof panel functions as an air guide plate. 3. Chamber.   4. The chamber according to claim 2, wherein the bottom plate is a single plate material composed of the annular plate and the rectangular plate. 5.