JP2005113828A - Drain forced-feed pump unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain forced-feed pump unit for constituting drain forced-feed equipment not requiring installation of a sewage tank and excellent in maintenance property. <P>SOLUTION: A drain forced-feed pump 9 is housed in a bottomed casing 8. A pump suction port 10 is lead to a drain inflow port 13 opened in a wall face of the casing 8, and a pump discharge port 14 is lead to a drain outflow port 15 opened in a wall face of the bottomed casing 8. A sensor 16 for detecting a drainage status is installed to the drain inflow port 13, and a control engine 17 that has received a signal from the sensor 16 instructs an operation control of the drain forced-feed pump 9. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention is installed in indoor drainage branch pipes to various drainage sources such as toilets, bathtubs and washing machine pans located far from existing indoor drainage pipes or drainage basins on each floor of existing buildings such as middle and high-rise buildings Then, the present invention relates to a drainage pumping pump unit for pumping the drainage from the drainage source located at a long distance to an existing indoor drainage pipe or drainage basin.

Drainage from various drainage sources (hereinafter referred to as drainage equipment etc.) such as toilets, bathtubs, washing machine pans, etc. on each floor of medium- and high-rise buildings, etc., has traditionally used the slope of indoor drainage branch pipes in the underfloor space Natural flow method (gravity drainage method) was common (for example, see Patent Document 1)
. However, the height of the underfloor space is only the minimum height required for maintenance due to restrictions on the structure of the building, and the height of the underfloor space increases as the distance from the indoor drainage pipe or drainage tract increases. The slope of the indoor drainage branch becomes gentle due to restrictions. Therefore, the installation position of the drainage equipment and the like is inevitably limited to a position near the indoor drainage pipe or drainage basin where the indoor drainage branch pipe connected to the drainage equipment and the like can secure a prescribed water guiding gradient. . In recent years, there has been a movement in the construction industry to renovate used office buildings that have been oversupplied and convert them into condominiums. In such a case, the internal structure of the existing building is used as it is, and the internal walls and the drainage equipment arrangement are modified so as to be suitable for living. However, in the case of condominiums (condominiums), unlike office buildings, drainage equipment and the like must be provided for each door, and for the reasons described above, it is desirable to install indoor drainage pipes or drainage basins at suitable locations. It is where However, although the wall can be repaired relatively easily, the change in the arrangement and expansion of the indoor drainage pipe or drainage basin is a major change accompanied by a change in the structure of the skeleton, making it difficult work. It is difficult to renovate the equipment corresponding to the drainage equipment.

Therefore, instead of the conventional natural flow method (gravity drainage method) using an inclined gradient, a kind of forced transfer method called a drainage pumping method is being used. In this drainage pumping system, drained sewage from each drainage source is temporarily stored in a large-capacity tank called a storage tank that houses the drainage pump, and this stored sewage is driven into the indoor drain branch pipe by driving the drainage pump. (For example, refer to Patent Document 2). However, it is difficult to secure storage space for each house in condominiums (condominiums), and it is necessary to lift the drainage pump from the storage tank where sewage is accumulated when the drainage pump fails or is inspected. Not only is there a problem in maintainability, but also the amenity of an apartment (apartment house) is significantly deteriorated due to leakage of sewage and the spread of odor.
JP 2002-285601 A (0002) JP 2003-94041 A (FIG. 1-2)

The problem to be solved is that each floor of existing buildings such as middle and high-rise buildings can be provided with drainage sources such as toilets, bathtubs, washing machine pans, etc. at any position away from existing indoor drainage pipes or drainage basins. Another object of the present invention is to provide a drainage pumping pump unit for constituting a drainage pumping facility which is space-saving and has excellent maintainability without requiring installation of a sewage storage tank.

In the pump unit for drainage pumping of the present invention, the pump is accommodated in the bottomed casing, the pump suction port is connected to the drainage inlet opened on the casing wall surface, and the pump outlet is the drainage outlet port opened on the casing wall surface. The main feature is that the drainage inlet is equipped with a sensor that detects the drainage status, and that the operation control of the pressure pump is performed according to the command from the control engine that has received the sensor signal. To do.

By installing the pump unit for pumping wastewater of the present invention between an indoor drainage branch pipe installed horizontally in the underfloor space and a drainage conduit led from an indoor drainage source, existing buildings such as middle and high-rise buildings A drainage pumping facility for draining wastewater from various drainage sources on each floor to the sewage mains via existing indoor drainage pipes or drainage basins is immediately constructed. And the drainage pumping equipment constructed by interposing the pumping unit for drainage pumping of the present invention will be of the conventional natural flow method (gravity drainage method) by the slope, and away from the existing indoor drainage pipe or drainage basin. It is possible to cope with various drainage sources provided at arbitrary positions. In addition, it is a space-saving configuration that does not require the installation of a storage tank as in the conventional drainage pumping system, and it can be lifted together with the bottomed casing at the time of failure or inspection of the pumping pump, so it has excellent maintainability, There is no risk of leaking sewage or spreading odors.

The pump discharge port is opened at a position higher than the pump suction port and accommodates the pump, and the pump suction port is connected to the drainage inlet established on the casing wall surface via the check valve and the water stop valve, The pump discharge port is connected to the drainage outlet established on the casing wall via the water stop valve, and the drainage inlet is equipped with a sensor that detects the drainage status. It is configured such that the operation control of the pressure feed pump is performed according to the command.

In FIG. 1, reference numeral 1 denotes an indoor drainage pipe, which is erected from the upper floor of an existing building such as a middle-high-rise building to the sewage main building 2 at a lower portion via each floor. Reference numerals 3 and 3 denote indoor drainage branch pipes, which are horizontally installed in the underfloor space 4 of each floor and are integrated into the indoor drainage pipe 1. 5 and 5 are drainage sources (toilet, bathtub, washing machine pan, etc.) provided on each floor, and 6 and 6 are drainage conduits led from the drainage sources 5 and 5, respectively. 7 and 7 are pump units for pumping waste water, and each drain pipe 6
-It interposes in the conduction | electrical_connection part of 6 under-end terminal parts and each indoor drainage branch pipe 3 ... 3, respectively.

As shown in FIGS. 2 and 3, the drainage pump unit 7 accommodates a pump 9 in a bottomed casing 8, and the pump suction port 10 passes through a check valve 11 and a water stop valve 12 and has a bottomed casing. 8 is connected to the drainage inlet 13 established on the wall surface 8, and the pump outlet 14 is connected to the drainage outlet 15 established on the wall surface of the bottomed casing 8 via the water stop valve 12. . The drainage inlet 13 is equipped with a sensor 16 for detecting the drainage condition, and the operation control of the pumping pump 9 is performed by a command from the control engine 17 that has received a signal from the sensor 16. Reference numeral 18 denotes a leakage sensor for detecting water leakage into the bottomed casing 8.

As a type of the sensor 16 that detects the state of drainage and transmits it to the external control engine 17, a pressure type sensor is illustrated in FIGS. 1 and 2, but is not limited to this, and a weight type sensor, It may be a capacitance type sensor, an electrode type sensor, a float type sensor or the like. However, depending on the type of sensor, it is possible to perform time-series variable speed control of the pump 9 according to the water level state, only non-time-series ON-OFF control, or detection of deposits. can do. However, this is not the gist of the present invention.

When the horizontal pump is accommodated in the bottomed casing 8 so that the pump discharge port is opened at a position higher than the pump suction port, the air contained in the drainage can be easily discharged and the air lock prevention effect can be produced. become.

It is explanatory drawing which outlined the example of use of the pump unit for waste_water | drain pressure feeding of this invention. It is the principal part vertical side view which showed the structural example of the pump unit for waste_water | drain pressure feeding of this invention. It is the principal part vertical side view which showed the example of mounting | wearing of this invention drainage pumping pump unit.

Explanation of symbols

8 Bottomed casing 9 Pressure pump 10 Pump inlet 13 Drain inlet 14 Pump outlet 15 Drain outlet 16 Sensor 17 Control engine

Claims (3)

The pump is accommodated in the bottomed casing, the pump suction port is connected to the drainage inlet opened on the casing wall, the pump discharge port is connected to the drainage outlet opened on the casing wall, and the drainage inlet is Equipped with a sensor for detecting the drainage situation, characterized in that the operation control of the pressure pump is performed by a command from the control engine that has received the signal of the sensor,
Pump unit for drainage pumping. The pressure pump accommodated in the bottomed casing is a horizontal pressure pump,
The drainage pump unit according to claim 1. 3. The drainage pump unit according to claim 1, wherein the pump discharge port is opened at a position higher than the pump suction port.

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