JP2007239353A - Vacuum pump-up conduit and vacuum pit for check - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vacuum pump-up conduit and a vacuum pit for a check which eliminate the need for the use of plants or facilities not requiring high construction costs, maintenance costs or the like, which are economical, and which can be laid down even in a narrow land and a small-sized area. <P>SOLUTION: A connection port 16 and a terminal manhole 20 are connected to each other by the vacuum conduit 22 of the vacuum pump-up conduit 10, and a vacuum pit 24 for a check, a conduit port 26 for a check and a conduit valve 28 are arranged in an appropriate position of the vacuum conduit 22. When sewage accumulates in a toilet tank 12 provided to each building 30, a worker draws up a transfer car 14 in front of the terminal manhole 20 and connects a suction hose 38, which is connected to a collecting tank 18, to the terminal on the downstream side of the vacuum conduit 22. Then a pump-up hose 34 is connected to the toilet tank 12 and the connection port 16, and a vacuum pump 36 is operated. Because of this, the vacuum conduit 22 or the like are made vacuum, and the sewage is drawn into the pump-up hose 34. Then the sewage is passed through the vacuum conduit 22, the suction hose 38 or the like, and is stored in the collecting tank 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vacuum pumping line and a vacuum pump for inspection, and in particular, for example, using a vacuum pump of a transport vehicle to pump the sewage collected in the toilet tank to a collection tank of the transport vehicle. Concerning pipes and vacuum for inspection.

  Conventionally, a vacuum sewer system is used for collecting sewage. In this system, the sewage naturally flows down to the vacuum valve unit through the inflow pipe and is stored in the sewage pool of the vacuum valve unit. Then, when the water level in the sewage pool rises, the vacuum valve opens, and the sewage is sucked by the vacuum pump of the relay pump station and conveyed to the water collection tank through the vacuum sewage pipe. Furthermore, when the amount of sewage in the water collection tank reaches a certain amount, the pump is activated and transported to a sewage treatment plant, a natural flow main line, or the like.

  In such a system, it is necessary to provide a vacuum valve unit and a relay pump station in addition to a vacuum sewage pipe for conveying sewage. This vacuum valve unit is equipped with a pool of sewage, a vacuum valve and a water level detector, etc., and a relay pump station is equipped with a vacuum pump, a water collection tank and a pressure pump, etc. In addition, the construction cost and maintenance cost of the relay pump station increase.

  As an example of a method for solving this, Patent Documents 1 and 2 are disclosed.

  In the vacuum sewer system of Patent Document 1, a water collection unit is used instead of the relay pump station. The vacuum valve unit is connected to the water collection tank of the water collection unit by a vacuum sewage pipe, and the water collection tank is connected to the treatment plant by a sewage connection pipe and a main line sewage pipe. In addition, the water collection unit and the vacuum pump station are connected by a ventilation connection pipe and a vacuum ventilation pipe, so that the water collection unit is evacuated.

Moreover, in the vacuum-type sewer system of patent document 2, the conveyance vehicle is used instead of the relay pump station. A mounting pipe is connected to the vacuum valve unit via a gate valve, and a connecting portion is provided at the tip of the mounting pipe. And after connecting a connection part to the water collection tank of a conveyance vehicle with a vacuum sewer pipe, the vacuum pump of a conveyance vehicle is operated and the water collection tank is evacuated.
JP 2002-194807 A [E03F 5/22] JP 2002-70130 A [E03F 3/02, E03F 5/22]

  In the prior arts of Patent Documents 1 and 2, since no relay pump station is provided, construction costs and maintenance costs of the relay pump station can be reduced. However, it is necessary to provide a vacuum valve unit, which increases the construction cost and maintenance cost of the vacuum valve unit. In addition, there may be a case where a construction site for the vacuum valve unit cannot be secured in a narrow area.

  Also, in order to deepen the sewage reservoir so that the sewage naturally flows into the sewage reservoir, excavation civil engineering machinery such as a backhoe must be brought into the construction of the vacuum valve unit. However, in narrow spaces, the width of the road is narrow, and it is not possible to carry excavation civil engineering machinery, and it is not possible to construct a vacuum valve unit.

  Therefore, the main object of the present invention is to provide a vacuum pumping line and a vacuum chamber for inspection which can be used economically regardless of the installation site.

  The invention of claim 1 is a vacuum pumping line used for pumping up sewage collected in a toilet tank to a collection tank loaded on a transport vehicle by a vacuum pump of the transport vehicle, which is evacuated by a vacuum pump. A vacuum pipe line, a connection port provided in the vacuum pipe line, and an end point manhole to which the downstream end of the vacuum pipe line is connected, and the sewage is sucked from the toilet tank to the connection port and conveyed through the vacuum pipe line. This is a vacuum pumping line for collecting from the downstream end of the pipe to the collecting tank.

  In the first aspect of the present invention, when sewage is stored in a stool (12: reference numeral exemplifying a corresponding part in the embodiment; the same applies hereinafter), for example, when a certain amount of sewage is stored in the stool (12). The worker goes to the end point manhole (20) by the transport vehicle (14) and arrives at the end point manhole (20). Then, the collection tank (18) is connected to the downstream end of the vacuum line (22) in the end point manhole (20), the toilet tank (12) is connected to the connection port (16), and the vacuum pump (36) is operated. Let Thereby, the inside of the vacuum line (22) becomes a vacuum, and the sewage in the toilet tank (12) is sucked into the connection port (16) and passes through the vacuum line (22) to the collection tank (18). Carried. When the sewage is collected in the collection tank (18), the worker carries the sewage to the sewage treatment plant or the like with the transport vehicle (14).

  In this way, the toilet tank (12) is used in place of the sewage pool, and the worker collects when a certain amount of sewage has accumulated in the toilet tank (12) instead of the vacuum valve and the water level detector. If the tank (18) and the stool (12) are connected to the vacuum line (22), there is no need to provide a vacuum valve unit. Further, the vacuum pump (36) of the transport vehicle (14) is used instead of the vacuum pump (36) of the relay pump station, and the collection tank of the transport vehicle (14) is used instead of the water collection tank (18) of the relay pump station. If the sewage is transported by the transport vehicle (14) instead of the pressure pump using (18), there is no need to provide a relay pump station. Therefore, it does not require a vacuum valve unit and a relay pump station that are expensive to construct and maintain, and is economical. And it is not necessary to secure a construction site for the vacuum valve unit and the relay pump station, and it can be laid in a narrow land.

  Moreover, if the existing toilet tank (12) is used, it is not necessary to newly make a place for storing sewage such as a sewage reservoir, and construction costs can be reduced. Even if a new toilet tank (12) is provided, the depth of the toilet tank (12) is shallow, so the toilet tank (12) can be formed by hand digging or a small machine, etc. It is done. Moreover, the stool (12) can be provided even in a place where a large machine cannot be transported, and the laying place is not selected.

  The invention of claim 2 is the vacuum pumping pipe according to claim 1, wherein the vacuum pipe has a gradient, and the end point manhole is installed at the lowest position of the gradient.

  In the second aspect of the invention, when the end point manhole (20) is installed at the lowest level of the gradient, the vacuum pipe (22) is inclined downward from the connection port (16) toward the end point manhole (20). After being pumped from the toilet tank (12) to the vacuum line (22) by the pump (36), the sewage naturally flows down toward the end point manhole (20). Therefore, the vacuum pump (36) only needs to have a general suction force, that is, a suction force for lifting the sewage from the toilet tank (12) to the connection port (16), and the existing transport vehicle (14) can be used. .

  Moreover, even if a lift is provided in the middle of the vacuum pipe (22), if the height of the lift is approximately the same as the height from the toilet tank (12) to the connection port (16), the vacuum pump (36) Sewage can get over the lift by suction force.

  The invention of claim 3 has an inspection port and a main body inserted into the pipeline, a lid detachable from the inspection port, and provided in at least one of the main body and the lid, and the pipeline is opened to the atmosphere. It is a vacuum for inspection with a valve that can be used.

  In the invention of claim 3, when the lid (78) is attached to the inspection port (92) and the valve (82) is closed, the inside of the main body (76) is airtight. Is connected to the vacuum line (22), the inside of the main body (76) is in a vacuum state. In this state, the lid (78) cannot be opened due to the difference in pressure between the inside and outside of the main body (76). Therefore, if the vacuum line (22) is opened to the atmosphere by the valve (82), the pressure difference between the inside and outside of the main body (76) is reduced, and the lid (78) can be opened. The inside can be inspected, repaired, or cleaned from the inspection port (92) from which the lid (78) has been removed.

  A fourth aspect of the present invention is the vacuum pumping line according to the first or second aspect, further comprising the vacuum vacuum for inspection according to the third aspect.

  In the invention of claim 4, as in the invention of claim 3, the lid (78) can be opened to inspect, repair, or clean the vacuum line (22) from the inspection port (92).

  For example, when dirty water is clogged in the vacuum pipe (22), the inside can be inspected from the inspection port (92) to remove clogged dirt.

  If a vacuum leak occurs due to a failure such as damage to the vacuum pipe (22), a test ball (130) is inserted from the inspection port (92), or a vacuum pump (126) is connected to the valve (82). By doing so, it is possible to measure the degree of vacuum of the vacuum line (22) and to find a defective part of the vacuum line (22).

  The invention of claim 5 further includes a pipe valve connected to the vacuum pipe line in the vicinity of the end point manhole, the pipe valve is opened when the sewage is pumped, and the pipe valve is closed except when the pump is pumped. 2 or 4 vacuum drawing pipe line.

  In the invention of claim 5, the pipe valve (28) is opened, the sewage is pumped from the toilet tank (12) to the collection tank (18), the pipe valve (28) is closed, and the vacuum pipe Block (22). Thereby, even if the sewage remaining in the vacuum pipe (22) after the completion of the pumping flows into the end point manhole (20), the sewage is stopped by the pipe valve (28). For this reason, for example, after removing the collection tank (18) from the downstream end of the vacuum line (22) or when connecting the collection tank (18) to the downstream end of the vacuum line (22) next time, It does not flow into the end point manhole (20), and the bad odor caused by the dirty water is improved and the workability is improved.

  According to the present invention, by using a transport vehicle having a vacuum pump and a collection tank and an operation by an operator, the vacuum pumping pipe line can be laid on a narrow ground, and the vacuum pumping pipe line Construction costs and maintenance costs can be reduced.

  The above object, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

  A vacuum scooping line 10 according to an embodiment of the present invention shown in FIG. 1 is used when scooping up sewage stored in a toilet tub 12 into a collection tank 18 of a transport vehicle 14. The vacuum pumping line 10 includes a connection port 16 through which sewage from the toilet 12 flows, a vacuum line 22 for conveying sewage, an end point manhole 20 to which a downstream end of the vacuum line 22 is connected, and maintenance of the vacuum line 22. And a pipe valve 28 for controlling the vacuum pipe 22 are provided.

  As shown in FIGS. 1 and 2, the toilet tub 12 is a container or the like for storing sewage, and is embedded in the basement of the building 30. A sewage pipe 31 is connected to the toilet tub, and the tip of the sewage pipe 31 is connected to the toilet bowl 32. Since the sewage pipe 31 is inclined downward from the toilet bowl 32 toward the toilet tub 12, the sewage flowing from the toilet bowl 32 naturally flows down the sewage pipe 31 and is stored in the toilet tub 12.

  Further, the upper part of the toilet tub 12 is opened, and a normal lid (not shown) is attached to the upper opening. When the sewage is pumped, a pumping hose 34 is inserted from the upper opening.

  The pumping hose 34 is made of a tube having such a strength that it does not break even if it vibrates vigorously when sewage passes through it, and is flexible enough to be rolled up and bundled. The pumping hose 34 is normally rolled and bundled on the transport vehicle 14, and is transported from the transport vehicle 14 to the connection ports 16 and the toilet tub 12 by the worker when the pumping is performed. For this reason, the length of the pumping hose 34 is a length that can be carried by an operator, and is set to about 20 m, for example. Moreover, the diameter of the drawing hose 34 is set to about 50 mm, for example. A suction port 35 is attached to the distal end portion of the pumping hose 34 when the sewage is pumped. The suction port 35 is provided with a plurality of holes, and the size of the holes is set to such a size that the toilet paper or the like is not clogged with the drawing hose 34, for example, 25 to 35 mm. However, the pumping hose 34 may be inserted into the toilet tub 12 without attaching the suction port 35 to the tip of the pumping hose 34.

  As shown in FIG. 1, the transport vehicle 14 is an automobile loaded with a collection tank 18, a vacuum pump 36, and the like, and for example, a vacuum car or the like is used as the transport vehicle 14. A suction hose 38 is connected to the collection tank 18, and the tip of the suction hose 38 is connected to the downstream end of the vacuum line 22 in the end point manhole 20. The collection tank 18 is equipped with a vacuum pump 36. When the vacuum pump 36 is operated, the inside of the collection tank 18 is evacuated and sucked into the collection tank 18 from the suction hose 38. The vacuum pump 36 is required to have at least a general suction force that the vacuum car has. A general suction force is a suction force for lifting sewage from the toilet tub 12 to the upper opening of the toilet tub 12, and is 0.069 Mpa, for example.

  As shown in FIG. 1, the connection port 16 is provided at a position where the pumping hose 34 reaches from one or a plurality of toilet tanks 12. As shown in FIG. 3, a pipe having a branch pipe part 42 branched from the main pipe part 40, for example, a Y-shaped pipe 44 is used. The main pipe part 40 is connected to the vacuum pipe line 22, and the connection port 16 is formed at the tip of the branch pipe part 42. A cap 46 is detachably attached to the end of the connection port 16, and the connection port 16 is sealed by the cap 46. Further, the connection port 16 is provided in the connection port space.

  The connection port space is formed inside the connection port protective hat 48 and the connection port protective short tube 50. The connection port protective hat 48 includes a lid 52 and a base 54 that supports the lid 52. The lid 52 covers the mouth of the connection port space, that is, the center hole of the pedestal 54 so that it can be opened and closed, and the upper surface of the lid 52 appears on the ground surface. The pedestal 54 has a cylindrical shape and is embedded above the connection port 16. The connection port protective short tube 50 is disposed inside the pedestal 54, and the connection port protective short tube 50 is embedded so as to surround the connection port 16. The protective short pipe 50 for connection ports is formed of a resin pipe such as hard vinyl chloride resin, and the length thereof is shorter than the earth covering of the vacuum pipe line 22 and is set to, for example, 300 mm. The diameter of the protective short pipe 50 for the connection port is large enough to allow the connection operation between the connection port 16 and the pumping hose 34, and is set to 200 mm, for example.

  Normally, the center hole of the pedestal 54 is covered with the lid 52, and the connection port 16 is closed with the cap 46. When the sewage is pumped, as shown in FIG. 52 is removed, and the connection conversion joint 56 is connected to the connection port 16 instead of the cap 46.

  As shown in FIGS. 2 and 4, the connection conversion joint 56 is used when connecting the pumping hose 34 and the connection port 16, and is housed in a pipe valve space described later at other times. Yes. And the connection conversion coupling 56 has the pipe part 58, and the length of the pipe part 58 is set, for example to 450 mm. The pipe part 58 includes a curved part 60 and a flexible part 62, and the curved part 60 and the flexible part 62 are connected in a state having airtightness and watertightness. A curved pipe formed of a hard vinyl chloride resin or the like is used for the curved portion 60, and a flexible hose formed of a polyethylene resin or the like is used for the flexible portion 62. The diameter of the curved portion 60 is set to, for example, 75 mm, the same as the diameter of the connection port 16, and the diameter of the flexible portion 62 is set to, for example, 50 mm, the same as the diameter of the pumping hose 34. A rubber ring receiving port 64 connected to the connection port 16 is provided in the pipe portion 58, and a union type receiving port 66 connected to the scooping hose 34 is formed in the flexible portion 62. By adopting this union type receiving port 66, the connection direction can be freely changed.

  As shown in FIG. 1, the end point manhole 20 is provided at the downstream end of the vacuum line 22, and is installed at the lowest level of the descending gradient of the vacuum line 22. The end point manhole 20 is a place where the transport vehicle 14 can be put in and around it, and a place where an operator can connect the collection tank 18 and the downstream end of the vacuum pipe line 22. Is provided.

  The end point manhole 20 shown in FIGS. 5 to 7 is, for example, a rectangular parallelepiped having a width of 680 mm, a depth of 980 mm, and a height of 1210 mm. The upper end of the end point manhole 20 is opened, and an iron lid 68 or the like is detachably attached to the upper opening.

  A downstream end portion of the vacuum pipe line 22 protrudes from the side surface of the end point manhole 20 toward the inside, and a flange portion 70 is provided at the end to project outward in the radial direction. The connection conversion joint 72 is connected to the vacuum pipe line 22 by the flange 70. If the connection conversion joint 72 is removed, the downstream end of the vacuum pipe line 22 is opened, and the downstream opening is used for inspection, repair, cleaning, and the like of the vacuum pipe line 22.

  The connection conversion joint 72 connects the suction hose 38 and the downstream end of the vacuum pipe 22, and for example, the same connection conversion joint 56 that connects the connection port 16 and the pumping hose 34 shown in FIG. 4 is used. It is done. However, the length of the pipe part 58 is long, for example, set to 900 mm. A flange 74 is attached instead of the rubber ring receiving port 64. The union type receiving port 66 is connected to the suction hose 38 only at the time of use, but the flange 74 is always connected to the downstream end of the vacuum line 22. Then, when not in use, as shown in FIG. 7, the connection conversion joint 72 is bent in a state of being connected to the downstream end of the vacuum pipe line 22 and accommodated in the end point manhole 20.

  As shown in FIG. 1, the vacuum pipe line 22 is a pipe line that is evacuated by a vacuum pump 36 and carries sewage from the connection port 16 to the end point manhole 20, and is buried in the ground. The earth covering is set to, for example, 350 mm or more in a place where a car or the like does not pass, and among them, 400 mm or more is preferable. In places where an automobile or the like passes and earth pressure is applied or is likely to be applied, the earth covering is set to 600 mm or more.

  For the vacuum line 22, a pipe that does not deform with respect to earth pressure from the outside and pressure reduction from the inside, for example, a resin pipe such as hard vinyl chloride resin is used. If the tube diameter is too large, it takes time to evacuate the inside of the vacuum pipe line 22, and material costs and laying costs increase. On the other hand, if the tube diameter is too small, filth contained in the sewage is likely to be clogged. For example, it is set to 75 mm. In addition, the rigid vinyl chloride resin pipe with a diameter of 75 mm has been developed as a pipe for vacuum sewage, has a wide assortment of peripheral members, and can be easily specially processed. This resin tube is easy to use as a tube material for the vacuum pipe line 22.

  Since the vacuum pipe line 22 is mainly piped according to the terrain, it may have a horizontal part and a lift part with an ascending slope in part thereof, but the end manhole 20 from the connection port 16 through the entire length. It is installed so that it may become a downward slope toward. The gradient of the vacuum line 22 is set to 0.2% or more, for example. Then, the height of the lift portion is set to be equal to or lower than the height at which the sewage at the low position of the lift portion can be sucked up to the high position by the suction force of the vacuum pump 36.

  Further, a Y-shaped tube or the like is used at the confluence portion of the vacuum line 22 so that the vacuum line 22 is bent at an obtuse angle from the upstream side toward the downstream side. Thereby, since sewage flows smoothly in a junction part, the vacuum pipe line 22 becomes a pipe line which is hard to be clogged with the filth contained in sewage.

  The inspection vacuum chamber 24 is installed in a bent portion of the vacuum pipe line 22 as shown in FIG. 8, a confluence part of the vacuum pipe line 22 as shown in FIGS. 9 and 10, a straight portion of the relatively long vacuum pipe line 22, and the like. Used for inspection, repair and cleaning of the vacuum line 22 and the like. The main body 76, the lid 78, and the valve 82 are further provided, and the main body 76 and the lid 78 are formed of a synthetic resin such as a hard vinyl chloride resin.

  As shown in FIGS. 8 to 11, the main body 76 has a bottom, its side wall is formed in a cylindrical shape, an upstream pipe portion 84 is provided on the upstream side, and a downstream pipe portion 86 is provided on the downstream side. Is provided. A rubber ring receiving port 88 is provided at the tip of the upstream side pipe portion 84, and an outlet 90 is provided at the tip of the downstream side pipe portion 86. The rubber ring receiving port 88 and the difference port 90 are respectively connected to the outlets of the vacuum pipe 22. The main body 76, the upstream side pipe portion 84, and the downstream side pipe portion 86 are inserted into the vacuum line 22 by being fitted into the receiving port.

  The diameter of the main body 76 is small, for example, set to 100 mm in order to avoid separation of air and sewage flowing from the vacuum conduit 22. Further, the upstream pipe portion 84 is provided at a position higher than the downstream pipe portion 86, and these heights are set so that there is no step between the pipe bottom of the downstream pipe portion 86 and the bottom of the main body 76. It is formed to match. In addition, since the inspection vacuum chamber 24 is embedded so that the upstream side is higher than the downstream side, the bottoms of the upstream side pipe portion 84, the downstream side pipe portion 86 and the main body 76 descend from the upstream side toward the downstream side. A gradient is added. For this reason, the sewage flowing from the upstream side is prevented from staying in the inspection vacuum chamber 24.

  An inspection port 92 is opened above the main body 76, and a lid 78 is detachably attached to the inspection port 92. A valve 82 is attached to the lid 78. The inspection port 92 is sealed with a lid 78 in a state where the valve 82 is closed.

  An inspection vacuum chamber 24 is provided in the inspection space, and the inspection space is formed inside the inspection protective hat 94 and the inspection protective short tube 96. The inspection protective hat 94 is the same as the connection port protective hat 48, and the inspection protective short tube 96 is the same as the connection port protective short tube 50.

  As shown in FIGS. 1 and 12, the inspection conduit port 26 is provided at an opening at the upstream end of the vacuum conduit 22 and is used for inspection, repair, cleaning, and the like of the vacuum conduit 22. In other words, a curved pipe that bends toward the ground surface, for example, a 90-degree bend 98 is used at the upstream end portion of the vacuum line 22, and the tip of the 90-degree bend 98 opens upward, and this opening is for inspection. Used as the duct opening 26. As shown in FIGS. 12 and 13, the receiving unit 100 is attached to the end of the 90-degree bend 98, and the receiving unit 100 is provided with a lid 102 that closes the inspection pipe port 26 so that it can be opened and closed. A valve 106 is attached to the lid 102. When the lid 102 is fitted into the inspection conduit port 26 with the valve 106 closed, the vacuum conduit 22 is sealed with the lid 102.

  The inspection pipe opening 26 is provided in the pipe opening space, and the pipe opening space is formed inside the pipe opening protective hat 108 and the pipe opening protective short pipe 110. The same as the connection port protective hat 48 is used for the conduit port protective hat 108, and the same as the connection port protective short tube 50 is used for the pipe port protective short tube 110. However, since the vacuum pipe line 22 extends obliquely upward at the upstream end portion of the vacuum pipe line 22 and the earth covering of the vacuum pipe line 22 is shallow, the length of the protective short pipe 110 for the pipe port according to the earth covering is set. Is short, for example, set to 200 mm.

  As shown in FIG. 1, the conduit valve 28 is provided in the middle of the vacuum conduit 22 and in the vicinity of the end point manhole 20. When the pipe valve 28 is provided in the middle of the vacuum pipe 22, for example, it is arranged on the end manhole 20 side of the section in which three or more connection ports 16 are provided. As the pipe valve 28, a known valve such as a gate valve is used. As shown in FIG. 14 and FIG. 15, the pipe valve 28 is a valve pipe portion 112 and a valve element ( (Not shown). A rubber ring receiving port 114 is provided at the upstream end portion of the valve pipe portion 112, and a differential port 116 is provided at the downstream end portion. The rubber ring receiving port 114 and the differential port 116 are respectively connected to the vacuum pipe 22. The valve pipe 112 is inserted into the vacuum pipe 22 by being fitted into the mouth and the receiving opening. And the vacuum pipe line 22 is controlled by interrupting | blocking or opening the valve pipe part 112 with a valve body. A valve 120 is attached to the valve pipe portion 112.

  The pipe valve 28 is provided in the pipe valve space, and the pipe valve space is formed inside the pipe valve protective hat 122 and the pipe valve protective short pipe 124. The pipe valve protective hat 122 is the same as the connection port protective hat 48, and the pipe valve protective short pipe 124 is the same as the connection port protective short pipe 50. However, the diameter of the protective short pipe 124 for the pipe valve is set to, for example, 300 mm so that the pipe valve 28 can be easily operated in the pipe valve space.

  When the sewage collected in each stool 12 is pumped by the transport vehicle 14 using the vacuum pumping pipe line 10 shown in FIG. 1, for example, the collection date provided in advance every certain period, When a certain amount of sewage accumulates in the tank, the worker is contacted by the transport vehicle 14 toward the end point manhole 20, attaches the transport vehicle 14 to the end point manhole 20, and prepares a suction hose 38. Before starting to draw, the cap 46 (FIG. 3) of the connection port 16, the lid 78 (FIG. 11) of the inspection vacuum chamber 24, the lid 102 (FIG. 13) of the inspection pipe port 26, and the end point manhole 20 The pipe valves 28 in the vicinity of each are closed, and the pipe valves 28 other than the pipe valves 28 in the vicinity of the end point manhole 20 are opened.

  Then, as shown in FIG. 7, the connection conversion joint 72 is taken out from the end point manhole 20, and the suction hose 38 is joined to the tip as shown in FIG. Thereby, as shown in FIG. 1, the collection tank 18 is connected to the downstream end of the vacuum line 22 via the connection conversion joint 72 and the suction hose 38.

  Next, an operator lowers the pumping hose 34 from the transport vehicle 14 and carries it to the connection port 16 nearest to the target stool 12, and as shown in FIG. Remove the cap 46. In addition, a connection conversion joint 56 is prepared from the space for the pipe valve, and the rubber ring receiving port 64 is connected to the connecting port 16 and the union type receiving port 66 is connected to the drawing hose 34 as shown in FIG. Then, the pumping hose 34 is extended from the connection port 16 to the toilet tank 12, and the tip of the pumping hose 34 is inserted into the toilet tank 12.

  Then, as shown in FIG. 1, when the pipe valve 28 in the vicinity of the end point manhole 20 is opened and communicated from the stool 12 to the collection tank 18 and then the vacuum pump 36 is operated, the inside of the collection tank 18 is The suction hose 38, the vacuum line 22, the pumping hose 34, and the like are subsequently evacuated. As a result, the sewage is sucked and transported to the collection tank 18 through the pumping hose 34, the vacuum line 22, the suction hose 38, and the like. At this time, the sewage naturally flows down toward the end point manhole 20 in the downward slope of the vacuum line 22. In the lift portion, the sewage is lifted by the suction force of the vacuum pump 36 and gets over the lift.

  After the sewage of one stool 12 has been pumped out, if the stool 12 is within the range where the pumping hose 34 reaches from the connection port 16, and the sewage in the stool 12 needs to be pumped, the tip of the pumping hose 34 is The pumping hose 34 is extracted from the toilet tub 12 and the pumping hose 34 is transported to another toilet tank 12 while the pumping hose 34 is connected to the connection port 16 via the connection conversion joint 56. Then, when the tip of the pumping hose 34 is inserted into the toilet tank 12, sewage is sucked.

  In this way, when all of the sewage in the toilet tank 12 within the range where the pumping hose 34 can reach from one connection port 16 is finished, the pumping hose 34 is extracted from the toilet tank 12 and the connection conversion joint 56 is removed from the connection port 16. . Then, the cap 46 of FIG. 3 is fitted into the connection port 16.

  Next, the sewage in the toilet tank 12 is pumped from another connection port 16 shown in FIG. In this case, since the inside of the vacuum pipe line 22 is in a vacuum state, the vacuum pipe 22 is brought into the atmosphere by the nearest valve 82, 106, 120 of either the inspection vacuum chamber 24, the inspection pipe port 26 or the pipe valve 28. To open. Thereby, since the pressure difference between the inside and the outside of the vacuum line 22 is reduced, the cap 46 of another connection port 16 can be removed. Then, the pumping hose 34 is connected to the connection port 16, the tip of the pumping hose 34 is inserted into the toilet tub 12, and the valves 82, 106, 120 opened earlier are closed. The inside of 34 etc. is evacuated and the sewage in the toilet 12 is sucked. In the same manner as described above, all the sewage in the toilet tank 12 within the range that can be reached from the connection port 16 is drawn up and this is repeated.

  When the sewage is collected in the collection tank 18, the pumping hose 34 is taken out from the toilet 12 and the connection port 16, and a cap 46 is attached to the connection port 16. Then, the pipe valve 28 in the vicinity of the end point manhole 20 is closed, the end point manhole 20 is shut off from the vacuum pipe line 22, the vacuum pump 36 is stopped, and the suction hose 38 is disconnected from the connection conversion joint 72. In this way, by closing the pipe valve 28 in the vicinity of the end point manhole 20, even if sewage remaining in the vacuum pipe line 22 flows into the end point manhole 20 after the completion of pumping, the sewage flows down by the pipe valve 28. It can be stopped. For this reason, for example, after the collection tank 18 is removed from the end point manhole 20 or when the collection tank 18 is next connected to the end point manhole 20, the sewage does not flow into the end point manhole 20, thereby Workability is improved.

  Finally, after storing the connection conversion joint 72 in the end point manhole 20, the worker carries the sewage to the sewage treatment plant (not shown) or the like by the transport vehicle 14.

  In this way, the sewage is collected in each stool 12 and when a certain period or when a certain amount of sewage is collected in the stool 12, the worker connects the collection tank 18 and the stool 12 to the vacuum line 22, By operating the vacuum pump 36 and valves 82, 106, 120, etc., the sewage is pumped from the toilet tank 12 to the collection tank 18, and if the sewage is transported by the transport vehicle 14, the construction cost and the maintenance cost increase. It is economical because it does not require a valve unit and a relay pump station. For this reason, it is possible to form the small-scale vacuum pumping conduit 10 in an area where the buildings 30 are scattered over a wide range. Moreover, it can also be laid in a narrow area where a site for the vacuum valve unit and the relay pump station cannot be secured.

  Moreover, if the existing toilet tank 12 is used, it is not necessary to make a new place for storing sewage such as a sewage reservoir, and construction costs can be reduced. Even if a new toilet tank 12 is provided, since the depth of the toilet tank 12 is shallow, the toilet tank 12 can be formed by hand digging or a small machine, and construction costs can be reduced. Moreover, the toilet tub 12 can be provided in a place where a large machine cannot be transported, and the installation place is not selected.

  And in the place where a motor vehicle etc. do not pass, since the vacuum pipe line 22 is shallowly buried, laying costs can be suppressed.

  Further, by providing valves 82, 106, and 120 for the inspection vacuum chamber 24, the inspection conduit port 26, and the conduit valve 28, respectively, the vacuum state of the vacuum conduit 22 can be changed by opening and closing the nearest valves 82, 106, and 120. Easy to control. For example, in a vacuum state, the cap 46 and the lids 78 and 102 cannot be opened due to the pressure difference between the inside and the outside of the vacuum line 22, but if the vacuum line 22 is opened to the atmosphere by the valves 82, 106 and 120. The pressure difference between the inside and outside of the vacuum line 22 is reduced, and the cap 46 and the lids 78 and 102 can be opened.

  In such a vacuum pumping line 10, the connection port 16, the downstream opening of the vacuum line 22 in the end point manhole 20, the inspection port 92 of the inspection vacuum chamber 24, and the inspection line port 26 to the vacuum line 22 Inspection, repair, cleaning, etc. are performed.

  For example, when the vacuum line 22 is clogged with dirt contained in sewage, the connection port 16 near the clogged place, the downstream opening of the vacuum line 22, the inspection port 92 of the inspection vacuum chamber 24, or the inspection line port 26 is opened. At this time, when the vacuum pipe line 22 is in a vacuum state and the cap 46 or the lids 78 and 102 cannot be removed, the valves 82 and 106 attached to the lids 78 and 102 or the valves 82 and 106 in the vicinity thereof. After opening 120, the cap 46 or the lids 78 and 102 are removed. And a cleaning tool, a cleaning agent, etc. are inserted in the vacuum line 22, and clogged dirt etc. are removed. When the cleaning agent is poured into the vacuum line 22, the cleaning agent flows down through the vacuum line 22 and is discharged from the downstream opening, so that the cleaning agent discharged from the end point manhole 20 is received.

  Further, when checking for vacuum leakage in the vacuum pumping line 10, for example, a test ball 130 such as a vacuum pump 126, a pressure gauge 128, and a packer is prepared as shown in FIG. Then, the vacuum pump 126 is connected to the valve 82, the valve 82 for inspection, the valve for inspection 24, or the valve 82, 106, 120 of the inspection pipe port 26. Instead of the vacuum pump 126, the vacuum pump 36 of the transport vehicle 14 connected to the end point manhole 20 can also be used.

  Next, the vacuum pump 126 is operated to insert the test ball 130 into one of the downstream opening of the vacuum line 22, the connection port 16, the inspection port 92, or the inspection line port 26, and another port 16, 92, 26, the test ball 130 is pulled through the vacuum conduit 22 by pulling the string 132 of the test ball 130 and the degree of vacuum of the inspection portion between the vacuum pump 126 and the test ball 130 is measured by the pressure gauge 128. . If the location of the vacuum leak is not in the inspection portion, the degree of vacuum will be high, while if the location of the vacuum leak is in the inspection portion, the degree of vacuum will be low. For this reason, a vacuum leak location can be located by the degree of vacuum. And a vacuum leak location is repaired from either of the ports 16, 92, and 26.

  When checking for a vacuum leak, the pipe valve 28 and the test ball can be closed by appropriately closing the pipe valve 28, separating the vacuum pipe 22, and connecting the vacuum pump 126 between the pipe valve 28 and the test ball 130. The part in between can be inspected. In addition, when there is a problem in the vacuum pumping pipe line 10 such as a vacuum leak, the part other than the faulty part can be used for pumping by closing the pipe valve 28 on the end manhole 20 side from the faulty part.

  A vacuum pumping line 10 according to another embodiment of the present invention shown in FIG. 17 is substantially the same as the vacuum pumping pipe 10 shown in FIG. However, in FIG. 1, the connection port 16 and the toilet tub 12 are not always connected, and when the sewage is pumped, an operator, for example, sequentially turns around each tub 12 with one pumping hose 34 connected to the connection port 16. Then, the tip of the pumping hose 34 was inserted into the toilet tank 12. On the other hand, in FIG. 17, the same number of pumping hoses 34 as the toilet tub 12 are prepared, and the pumping hoses 34 are laid in advance in a state where the pumping hoses 34 are inserted into the toilet tank 12, respectively. Then, the toilet tank 12 and the connection port 16 are connected. The other parts are the same as those of the vacuum pumping pipe line 10 shown in the embodiment of FIG. In addition, the same number is attached | subjected about the common part of the vacuum drawing pipe line 10, and the description of the number is abbreviate | omitted.

  As shown in FIGS. 17 and 18, the pumping hose 34 is formed of a flexible hose, and the pumping hose 34 is provided with a gate valve 133 and the like. Further, the pumping hose 34 is embedded, one end thereof is connected to the connection port 16 via the connection conversion joint 56, and the other end is inserted into the toilet tub 12.

  In addition, the gate valve 133 and the like are normally closed and the pumping hose 34 is shut off, but the pumping hose 34 is communicated by opening the gate valve 133 during pumping.

  According to this, it is not necessary to carry around and connect the pumping hose 34 only by operating the gate valve 133 and the like, and the workability is excellent.

  Although the pumping hose 34 is shut off and communicated with the gate valve 133, the pumping hose 34 can be shut off and communicated by connecting and disconnecting the pumping hose 34 and the connection port 16 as shown in FIG.

  That is, the connection chamber 134 is provided in the ground. The pumping hose 34 is buried between the toilet tank 12 and the connection chamber 134, one end of the pumping hose 34 is inserted into the toilet tank 12, and a cap 136 is attached to the other end of the pumping hose 34 disposed in the connection chamber 134. Install. Further, the branch pipe portion 42 is extended from the vacuum pipe line 22 to the connection chamber 134, the connection port 16 is provided in the connection chamber 134, and the cap 46 is attached to the connection port 16. Normally, the tip of the pumping hose 34 and the connection port 16 are closed with caps 46 and 136, respectively, and these are cut off. However, when pumping sewage, the caps 46 and 136 are removed and the pumping hose 34 and the connection port 16 are removed. Connect. According to this, work such as detachment of the caps 46 and 136 and connection of the pumping hose 34 and the connection port 16 is required, but there is no need to carry around the pumping hose 34 and connection is excellent. It is economical because it does not require an expensive gate valve 133 or the like.

  In FIGS. 17 to 19, all of the pumping hose 34 is formed of a flexible hose. However, a part of the pumping hose 34, particularly a portion embedded therein, is a rigid polyvinyl chloride resin tube having no flexibility. It can also be formed.

  In all the embodiments described above, the Y-tube 44 including the connection port 16 and the cap 46 of the connection port 16 are not provided with valves, but the Y-tube 44 and / or the cap 46 may be provided with valves.

  In all of the above embodiments, in the inspection vacuum chamber 24 and the inspection conduit port 26, the valves 82 and 106 are provided in the lids 78 and 102, but the valves are provided in the main body 76 and the 90-degree bend 98. In addition, a valve can be provided on any of the lids 78 and 102 and the main body 76 and the 90-degree bend 98.

  In all the above embodiments, the diameter of the connection port 16 is set to be the same as the diameter of the vacuum pipe line 22, but the diameter of the connection port 16 can be set to be the same as the diameter of the pumping hose 34.

  Further, in all the above embodiments, the suction hose 38 and the pumping hose 34 are loaded on the transport vehicle 14 except during the pumping. However, the suction hose 38 and / or the pumping hose 34 is placed in the end point manhole 20 or the space for the pipe valve. Can be stored.

  In all the above embodiments, the suction hose 38 is connected to the downstream end of the vacuum line 22, the pumping hose 34 is connected to the connection port 16, and then the pipe valve 28 near the end point manhole 20 is opened. The vacuum pump 36 was activated, but the order of these does not matter.

  In all the above embodiments, the vacuum state in the vacuum line 22 is adjusted by opening and closing the valves 82, 106, 120. However, the vacuum state in the vacuum line 22 is adjusted by operating and stopping the vacuum pump 36. You can also.

  Note that the specific numerical values of the angles and dimensions given above are merely examples, and can be appropriately changed as necessary.

It is an illustration figure which shows the vacuum drawing pipe line of one Example of this invention. It is sectional drawing which shows the state which connected the pumping hose to the connection port used for the vacuum pumping pipe line of FIG. 1 Example via a connection conversion coupling, and inserted the tip of the pumping hose into the toilet bowl. FIG. 3 is a cross-sectional view illustrating a state in which a cap is attached to the connection port of FIG. 2 and the connection port is surrounded by a connection port protective hat and a connection port protective short tube. It is sectional drawing which shows a connection conversion coupling. It is a top view which shows the upper surface of an end point manhole. In an end point manhole, it is sectional drawing which shows the state which connected the suction hose to the downstream end of the vacuum pipe line via the connection conversion coupling. It is sectional drawing which shows the state which removed the suction hose from the connection conversion coupling, and accommodated the connection conversion coupling in the end point manhole. It is sectional drawing which shows the state which provided the vacuum vacuum for inspection in the bending part of the vacuum pipe line. It is sectional drawing which shows the state which provided the vacuum tank for an inspection in the confluence | merging part of a vacuum pipe line. It is sectional drawing which shows the state which provided the vacuum tank for an inspection in the confluence | merging part of a vacuum pipe line. It is sectional drawing which shows the state enclosed with the protective hat for inspecting the vacuum for inspection, and the protective short tube for inspection. It is sectional drawing which shows the connection port provided in the vacuum pipe line, and the pipe line for an inspection. It is sectional drawing which shows the pipe line for an inspection. It is sectional drawing which shows the state which enclosed the pipe line valve with the protective hat for pipe valves, and the protective short pipe for pipe valves. It is sectional drawing which shows a pipe line valve. It is sectional drawing which shows the state which test | inspected the vacuum leak of the vacuum pipe line using the vacuum pump and the test ball. It is an illustration figure which shows the vacuum drawing pipe line of another Example of this invention. FIG. 18 is a cross-sectional view showing a state in which a connection port and a toilet tub are connected by a pumping hose and a gate valve is provided in the pumping hose in the vacuum pumping line of the embodiment in FIG. 17. It is sectional drawing which shows the state which has arrange | positioned the connection port and pumping hose which are used for the vacuum pumping pipe line of another Example of this invention in the connection chamber.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Vacuum drawing pipe 12 ... Toilet tank 14 ... Conveyance vehicle 16 ... Connection port 18 ... Collection tank 20 ... End point manhole 22 ... Vacuum pipe 24 ... Vacuum for inspection 28 ... Pipe valve 36 ... Vacuum pump 76 ... Main body 78 ... lid 82 ... valve 92 ... inspection port

Claims (5)

A vacuum pumping line used for pumping up sewage collected in a toilet tank into a collection tank loaded on a transport vehicle by a vacuum pump of the transport vehicle;
A vacuum line to be evacuated by the vacuum pump;
A connection port provided in the vacuum line, and an end point manhole to which a downstream end of the vacuum line is connected,
A vacuum pumping line for sucking the sewage from the toilet tank to the connection port, transporting it through the vacuum line, and collecting it from the downstream end of the vacuum line to the collection tank.   The vacuum pumping line according to claim 1, wherein the vacuum line has a gradient, and the end point manhole is installed at a lowest position of the gradient. A main body that has an inspection port and is inserted into a pipeline,
A vacuum for inspection comprising a lid detachably attached to the inspection port, and a valve provided on at least one of the main body and the lid and capable of opening the pipe line to the atmosphere.   The vacuum pumping line according to claim 1, further comprising the inspection vacuum trough according to claim 3. Further comprising a conduit valve connected to the vacuum conduit in the vicinity of the end point manhole;
5. The vacuum pumping pipe according to claim 1, wherein the pipe valve is opened when the sewage is pumped, and the pipe valve is closed when pumping is not performed.

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