JP2022151945A - Pump facility, drainage machine field - Google Patents

Abstract

To provide a pump facility which can utilize a limited space, can prevent driving imperfection caused by flood damage, and can reduce motor rotation speed certainly to a regulated rotation speed of the pump in a drainage machine field in which multiple pump facilities are arranged in the limited space of the drainage machine field.SOLUTION: A pump facility can be arranged in an installation space determined previously in a drainage machine field and comprises: a horizontal shaft pump installed in a pump installation floor; a motor; a frame supporting the motor spaced from the pump installation floor; and a power transmission mechanism transmitting rotary power output by the motor to the horizontal shaft pump. The power transmission mechanism has a slowdown machine.SELECTED DRAWING: Figure 1A

Description

The present invention relates to pump installations and drainage pump stations.

At present, the installation height of pumps, prime movers, and reduction gears in drainage pumping stations is almost always the same as the outdoor ground level. In particular, in the case of a suction-type horizontal shaft pump, the pump cannot be installed at a high position due to restrictions on the suction height.

By the way, in recent years, due to climate change, the amount of rainfall has increased compared to before, exceeding the drainage capacity of the drainage pump station installed for the purpose of draining rainwater. I have more to do. In order to reinforce the drainage capacity, it is necessary to install a drainage pump facility that is larger than the existing pump facility. time is needed. In addition, when large-scale pump equipment is installed, there is a problem from the viewpoint of risk dispersion because the drainage capacity drops significantly during maintenance or failure of the pump equipment. In order to solve these problems, it is conceivable to use small pumps that can be designed and manufactured more standardly than the existing pumps, and increase the number of installed pumps to increase the drainage capacity and disperse the danger. However, when arranging a lot of drainage pump equipment in the installation space of the existing drainage pumping station, there arises a problem of how to arrange it in a limited space. In particular, when a horizontal shaft pump is used as the drainage pump and the prime mover for driving the pump is installed at the same level as the pump installation level, the prime mover occupies a large amount of space for installing the pump equipment. In order to install a large number of standard designed and manufactured small pumps in the limited space of the existing drainage pumping station, it is necessary to reduce the installation space for the prime mover and effectively utilize the empty space.

In addition, due to heavy rain caused by abnormal weather in recent years, the internal water level (the water level of the river on the suction side) has risen abnormally, causing the drainage pump station to be flooded. When the pump station is flooded, although the pump can be operated even if it is submerged to some extent, the pump cannot be driven because the prime mover is submerged in water, and the role of the pump station to prevent inland water flooding is impaired. end up Therefore, measures against flooding are indispensable.

In addition, most of the pumps in general drainage pumping stations have a large discharge rate and a low head, so the rotation speed is low. On the other hand, the prime mover has a high rotational speed for operating at the rated torque and rated output. Therefore, a transmission is required to match the rotational speed of the prime mover to the rotational speed of the pump. Patent Document 1 proposes a pump device in which an output shaft of an engine and a main shaft of a pump are connected by a belt-type continuously variable transmission. However, depending on the design conditions of the pump, the rotation speed of the prime mover is about 5 to 10 times the rotation speed of the pump. It is unsuitable when the speed reduction ratio is large. As a transmission, there is a fluid coupling type, but maintenance is more difficult than others.

Japanese Patent Application Laid-Open No. 2008-232018

The present invention has been made in consideration of the above points. An object of the present invention is to make it possible to effectively utilize the limited space in a drainage pump station where a plurality of pump facilities are arranged in the limited space of the drainage pump station, and to prevent malfunction due to flood damage from occurring, and to provide a prime mover. To provide a pump facility and a drainage pump station capable of reliably reducing the rotation speed of a pump to a prescribed rotation speed of the pump.

The pump equipment according to the first aspect of the present invention comprises:
A plurality of pump facilities that can be installed in a predetermined installation space of a drainage pump station,
a horizontal shaft pump installed on the pump installation floor;
a prime mover;
a frame that supports the prime mover at a distance from the pump installation floor;
a power transmission mechanism for transmitting rotational power output from the output shaft of the prime mover to the main shaft of the horizontal shaft pump;
with
The power transmission mechanism has a reduction gear.

According to this aspect, since the power transmission mechanism has a reduction gear, even when the reduction ratio is large such that the rotation speed of the prime mover is about 5 to 10 times the rotation speed of the pump, the rotation of the prime mover is The speed can be reliably reduced to the specified rotational speed of the pump. In addition, since the prime mover is supported apart from the pump installation floor, the prime mover installation space can be omitted from the pump installation floor, and the limited space of the drainage pump station can be effectively used. In addition, because the prime mover is supported at a distance from the pump installation floor, even if the drainage pump station is flooded due to an abnormal rise in the internal water level (intake side river), the prime mover is less likely to be submerged in water, resulting in operational failure due to flood damage. becomes less likely to occur.

A pump facility according to a second aspect of the present invention is the pump facility according to the first aspect,
The power transmission mechanism further has a pulley.

According to this aspect, by using a combination of the speed reducer and the pulley between the pump and the prime mover, it is possible to install the prime mover at a higher height position. Also, when there is a change in the frame size or the like due to renewal of the prime mover, it is possible to adjust the installation level of the prime mover by using a combination of the speed reducer and the pulley between the pump and the speed reducer.

A pump facility according to a third aspect of the present invention is the pump facility according to the first or second aspect,
The power transmission mechanism further includes a drive shaft provided with universal joints at both ends.

According to this aspect, by using a combination of the speed reducer and the universal joint (and the pulley) between the pump and the prime mover, it is possible to install the prime mover at a higher height position. In addition, when there is a change in the frame number due to the renewal of the motor, the motor installation level can be adjusted by using a combination of the reducer and the universal joint (and pulley) between the pump and the reducer. It becomes possible.

A pump facility according to a fourth aspect of the present invention is the pump facility according to any one of the first to third aspects,
The prime mover and the frame are arranged so as to overlap the horizontal shaft pump in a plan view.

According to this aspect, since the area occupied by one pump facility on the pump installation floor is reduced, the limited space of the drainage pump station can be effectively used.

A pump facility according to a fifth aspect of the present invention is the pump facility according to any one of the first to third aspects,
The prime mover and the frame are arranged so as not to overlap the horizontal shaft pump in a plan view.

According to this aspect, the space in the height direction (the space under the mounting frame) between the prime mover and the pump installation floor becomes an empty space. You will be able to make effective use of the available space. In addition, since the space above the pump is empty, it is easy to maintain the pump.

A pump facility according to a sixth aspect of the present invention is the pump facility according to the fifth aspect,
The speed reducer is a bevel gear speed reducer,
The output shaft of the prime mover is oriented perpendicular to the main shaft of the horizontal shaft pump in plan view.

A pump facility according to a seventh aspect of the present invention is the pump facility according to any one of the first to sixth aspects,
The pedestal is installed in contact with the pump installation floor.

A pump facility according to an eighth aspect of the present invention is the pump facility according to any one of the first to sixth aspects,
The mount is fixed to a wall or a pillar surrounding the installation space.

A drainage pumping station according to a ninth aspect of the present invention is provided with a plurality of pump installations according to any one of the first to eighth in a predetermined installation space.

According to the present invention, in a drainage pumping station where a plurality of pump facilities are arranged in a limited space of the drainage pumping station, the limited space can be effectively used, operation failure due to flood damage is unlikely to occur, and the prime mover The rotation speed of the pump can be reliably reduced to the specified rotation speed of the pump.

1A is a plan view showing a schematic configuration of pump equipment according to the first embodiment. FIG. FIG. 1B is a front view showing a schematic configuration of pump equipment according to the first embodiment. FIG. 1C is a right side view showing a schematic configuration of the pump equipment according to the first embodiment; FIG. 2A is a plan view showing a schematic configuration of pump equipment according to the second embodiment. FIG. 2B is a front view showing a schematic configuration of pump equipment according to the second embodiment. FIG. 2C is a right side view showing a schematic configuration of pump equipment according to the second embodiment. FIG. 3A is a plan view showing a schematic configuration of pump equipment according to the third embodiment. FIG. 3B is a front view showing a schematic configuration of pump equipment according to the third embodiment. FIG. 3C is a right side view showing a schematic configuration of pump equipment according to the third embodiment. FIG. 4A is a front view of a prime mover and a frame of pump equipment according to the second or third embodiment. FIG. 4B is a right side view of the prime mover and the frame of the pump equipment according to the second or third embodiment. FIG. 5A is a front view of pump equipment provided with a pedestal according to a modified example. FIG. 5B is a right side view of a pump facility provided with a pedestal according to a modified example. FIG. 6A is a diagram for explaining a first modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6B is a diagram for explaining a second modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6C is a diagram for explaining a third modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6D is a diagram for explaining a fourth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6E is a diagram for explaining a fifth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6F is a diagram for explaining a sixth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6G is a diagram for explaining a seventh modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6H is a diagram for explaining an eighth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6I is a diagram for explaining a ninth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 6J is a diagram for explaining a tenth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7A is a diagram for explaining a first modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7B is a diagram for explaining a second modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7C is a diagram for explaining a third modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7D is a diagram for explaining a fourth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7E is a diagram for explaining a fifth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7F is a diagram for explaining a sixth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7G is a diagram for explaining a seventh modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7H is a diagram for explaining an eighth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7I is a diagram for explaining a ninth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 7J is a diagram for explaining a tenth modification of the power transmission mechanism of the pump equipment according to the first or second embodiment; FIG. 8A is a plan view showing a schematic configuration of pump equipment according to the fourth embodiment. FIG. 8B is a front view showing a schematic configuration of pump equipment according to the fourth embodiment. FIG. 8C is a right side view showing a schematic configuration of pump equipment according to the fourth embodiment. FIG. 9A is a front view showing a schematic configuration of pump equipment according to a first modification of the fourth embodiment; FIG. 9B is a front view showing a schematic configuration of pump equipment according to a second modification of the fourth embodiment; FIG. 9C is a front view showing a schematic configuration of pump equipment according to a third modification of the fourth embodiment; FIG. 10A is a plan view showing a schematic configuration of pump equipment according to a fourth modified example of the fourth embodiment; FIG. 10B is a front view showing a schematic configuration of pump equipment according to a fourth modification of the fourth embodiment; FIG. 10C is a right side view showing a schematic configuration of pump equipment according to a fourth modification of the fourth embodiment; FIG. 11A is a plan view showing a schematic configuration of pump equipment according to a fifth modification of the fourth embodiment; FIG. 11B is a front view showing a schematic configuration of pump equipment according to a sixth modification of the fourth embodiment; FIG. 11C is a right side view showing a schematic configuration of pump equipment according to a seventh modification of the fourth embodiment; FIG. 12A is a plan view showing a schematic configuration of pump equipment according to an eighth modification of the fourth embodiment; 12B is a front view showing a schematic configuration of pump equipment according to an eighth modification of the fourth embodiment; FIG. 12C is a right side view showing a schematic configuration of pump equipment according to an eighth modification of the fourth embodiment; FIG. FIG. 13A is a front view showing a schematic configuration of pump equipment according to a ninth modification of the fourth embodiment; FIG. 13B is a front view showing a schematic configuration of pump equipment according to a tenth modification of the fourth embodiment; 13C is a front view showing a schematic configuration of pump equipment according to an eleventh modification of the fourth embodiment; FIG. 14A is a plan view showing a schematic configuration of pump equipment according to a twelfth modification of the fourth embodiment; FIG. 14B is a front view showing a schematic configuration of pump equipment according to a twelfth modification of the fourth embodiment; FIG. 14C is a right side view showing a schematic configuration of pump equipment according to a twelfth modification of the fourth embodiment; FIG. 15A is a plan view showing a schematic configuration of pump equipment according to a thirteenth modification of the fourth embodiment. FIG. 15B is a plan view showing a schematic configuration of pump equipment according to a fourteenth modification of the fourth embodiment; FIG. 15C is a plan view showing a schematic configuration of pump equipment according to a fifteenth modification of the fourth embodiment; FIG.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In addition, in the following description and the drawings used in the following description, the same reference numerals are used for parts that can be configured in the same manner, and redundant description is omitted.

(First embodiment)
1A is a plan view showing a schematic configuration of a pump facility 10 according to the first embodiment, FIG. 1B is a front view of the same, and FIG. 1C is a right side view of the same.

The pump equipment 10 according to the present embodiment is a small-sized pump equipment that can be installed in a predetermined installation space of a drainage pump station (not shown).

As shown in FIGS. 1A to 1C, the pump facility 10 includes a horizontal shaft pump 11 installed on the pump installation floor FL, a prime mover 12, a frame 13 supporting the prime mover 12 away from the pump installation floor FL, and a prime mover. and a power transmission mechanism 14 for transmitting rotational power output from the output shafts 12 to the main shaft of the horizontal shaft pump 11 .

Among them, the horizontal shaft pump 11 is installed via a pump foundation 15 on the pump installation floor FL. The horizontal shaft pump 11 may be a smaller pump than a large pump having a diameter exceeding 1000 mm in an existing pumping station. The horizontal shaft pump 11 may have a bore diameter of 900 mm or less, 800 mm or less, or 700 mm or less. In the illustrated example, the horizontal shaft pump 11 is a mixed flow pump, but is not limited to this, and may be an axial flow pump or a centrifugal pump.

For example, an engine is used as prime mover 12 . As a variant, prime mover 12 may be an electric motor. In the present embodiment, the prime mover 12 is installed on a frame 13, which will be described later, with its output shaft oriented parallel to and in the same direction as the main shaft of the horizontal shaft pump 11. As shown in FIG.

In the illustrated example, the frame 13 has a substantially rectangular plate and four legs extending downward from the four corners of the plate. placed in contact with each other. A motor 12 is installed on a plate portion of a frame 13, and the frame 13 supports the motor 12 while being separated from the pump installation floor FL.

As a variant, as shown in FIGS. 5A and 5B, the cradle 13 may have a bracket shape and be fixed to the wall 21 or pillar surrounding the installation space of the pump station (not shown). This aspect also allows the frame 13 to support the prime mover 12 away from the pump installation floor FL.

In the present embodiment, as shown in FIGS. 1A and 1C, prime mover 12 and frame 13 are arranged so as to overlap horizontal shaft pump 11 in plan view. As a result, the area occupied by one pump facility 10 on the pump installation floor FL is reduced, so that the limited space of the drainage pump station can be effectively used.

The power transmission mechanism 14 has a reduction gear 14a. In this embodiment, a parallel shaft gear speed reducer is used as the speed reducer 14a. The output shaft of the prime mover 12 is coaxially connected to the first gear of the speed reducer 14a, and the main shaft of the horizontal shaft pump 11 is coaxially connected to the second gear that meshes with the first gear of the speed reducer 14a. ing. Since the power transmission mechanism 14 has the speed reducer 14a, even if the rotation speed of the prime mover 12 is about 5 to 10 times the rotation speed of the horizontal shaft pump 11, even if the reduction ratio is large, the rotation of the prime mover 12 can be prevented. The speed can be reliably reduced to the specified rotation speed of the horizontal shaft pump 11 .

As a modified example, the power transmission mechanism 14 may further include a pulley 14b in addition to the reduction gear 14a, as shown in FIGS. 6A and 6B. The pulley 14b may be arranged between the motor 12 and the reduction gear 14a as shown in FIG. 6A, or may be arranged between the reduction gear 14a and the horizontal shaft pump 11 as shown in FIG. 6B. may be By using a combination of the reduction gear 14a and the pulley 14b between the horizontal shaft pump 11 and the prime mover 12, the prime mover 12 can be installed at a higher height position. Further, when there is a change in the frame size or the like due to the renewal of the prime mover 12, the combination of the reduction gear 14a and the pulley 14b between the horizontal shaft pump 11 and the prime mover 12 can be used to reduce the installation level of the prime mover 12. can be adjusted. 6A and 6B, the speed reducer 14a is not limited to a parallel shaft gear speed reducer, and may be a planetary gear speed reducer.

As another modification, as shown in FIGS. 6C and 6D, the power transmission mechanism 14 may further include a drive shaft 14c having universal joints at both ends in addition to the speed reducer 14a. The drive shaft 14c may be arranged between the speed reducer 14a and the horizontal shaft pump 11 as shown in FIG. 6C, or between the prime mover 12 and the speed reducer 14a as shown in FIG. 6D. may have been By using a combination of the speed reducer 14a and the drive shaft 14c between the horizontal shaft pump 11 and the prime mover 12, the prime mover 12 can be installed at a higher height position. In addition, when there is a change in the frame size or the like due to the renewal of the prime mover 12, the combination of the speed reducer 14a and the drive shaft 14c between the horizontal shaft pump 11 and the prime mover 12 can be used to facilitate the installation of the prime mover 12. It is possible to adjust the level.

As yet another modification, the power transmission mechanism 14 may further include both a pulley 14b and a drive shaft 14c in addition to the speed reducer 14a, as shown in FIGS. 6E-6F. Specifically, for example, as shown in FIG. 6E, the pulley 14b and the drive shaft 14c may be arranged between the prime mover 12 and the reduction gear 14a in this order from the prime mover 12 side, or as shown in FIG. As shown, the pulley 14b and the drive shaft 14c may be arranged in this order from the speed reducer 14a side between the motor 12 and the speed reducer 14a. Alternatively, as shown in FIG. 6G, the pulley 14b and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11 in this order from the reduction gear 14a side, or as shown in FIG. 6H. In addition, the pulley 14b and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11 in this order from the horizontal shaft pump 11 side. Alternatively, as shown in FIG. 6I, the drive shaft 14c may be arranged between the prime mover 12 and the reducer 14a, and the pulley 14b may be arranged between the reducer 14a and the horizontal shaft pump 11. A pulley 14b may be positioned between the prime mover 12 and the reducer 14a, and a drive shaft 14c may be positioned between the reducer 14a and the horizontal shaft pump 11, as shown in 6E. By using a combination of the speed reducer 14a, the pulley 14b, and the drive shaft 14c between the horizontal shaft pump 11 and the prime mover 12, the prime mover 12 can be installed at a higher height position. 6E to 6J, the speed reducer 14a is not limited to a parallel shaft gear speed reducer, and may be a planetary gear speed reducer.

According to the present embodiment as described above, since the power transmission mechanism 14 has the reduction gear 14a, the reduction ratio is such that the rotation speed of the prime mover 12 is about 5 to 10 times the rotation speed of the horizontal shaft pump 11. Even if it is large, the rotation speed of the prime mover 12 can be reliably reduced to the specified rotation speed of the horizontal shaft pump 11 .

Further, according to the present embodiment, since the prime mover 12 is supported apart from the pump installation floor FL, the installation space for the prime mover 12 can be omitted from the pump installation floor FL, and the limited space of the drainage pump station can be effectively used. become available. In particular, in the present embodiment, the horizontal shaft pump 11 is arranged in the space in the height direction (the space under the plate portion of the frame 13) between the motor 12 and the pump installation floor FL. and the frame 13 is arranged so as not to overlap with the horizontal shaft pump 11, the area occupied by one pump equipment 10 on the pump installation floor FL is reduced, and the limited space of the drainage pump station can be effectively used. It's like

Further, according to the present embodiment, since the prime mover 12 is supported separately from the pump installation floor FL, even if the drainage pump station is flooded due to an abnormal rise in the internal water level (suction side river), the prime mover 12 can be It becomes less likely to be submerged in water, and driving failure due to flood damage is less likely to occur.

Although the first embodiment has been described in detail above, the present invention is not limited to the above-described first embodiment, and various modifications can be made to the above-described first embodiment. is. An example of modification will be described below with reference to the drawings. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding portions in the above-described embodiment are used for the portions that can be configured in the same manner as in the above-described embodiment, and the same reference numerals are used. omit the description.

(Second embodiment)
Next, the pump equipment 10 which concerns on 2nd Embodiment is demonstrated. FIG. 2A is a plan view showing a schematic configuration of the pump equipment 10 according to the second embodiment, FIG. 2B is its front view, and FIG. 2C is its right side view.

As shown in FIGS. 2A-2C, in the second embodiment, like the first embodiment, the prime mover 12 was oriented with its output shaft parallel and in the same direction as the main axis of the horizontal shaft pump 11. However, in the second embodiment, the prime mover 12 and the frame 13 are arranged so as not to overlap the horizontal shaft pump 11 in a plan view, which is different from the first embodiment. different from the form. In the present embodiment, the prime mover 12 and the frame 13 are arranged so as not to overlap the horizontal shaft pump 11 in a plan view. The lower space) becomes an empty space, and as shown in FIGS. 4A and 4B, it is possible to store auxiliary equipment such as the air tank 16a and the air compressor 16b in this empty space, so that the drainage pump station is limited. Space can be used effectively. Moreover, since the space above the horizontal shaft pump 11 is free, there is an advantage that maintenance of the horizontal shaft pump 11 is easy.

In the example shown in FIGS. 2A to 2C, the power transmission mechanism 14 has only the speed reducer 14a, but it is not limited to this. Thus, the power transmission mechanism 14 may further have a pulley 14b in addition to the reduction gear 14a. The pulley 14b may be arranged between the motor 12 and the reduction gear 14a as shown in FIG. 6A, or may be arranged between the reduction gear 14a and the horizontal shaft pump 11 as shown in FIG. 6B. may be As another modification, as shown in FIGS. 6C and 6D, the power transmission mechanism 14 may further include a drive shaft 14c having universal joints at both ends in addition to the speed reducer 14a. The drive shaft 14c may be arranged between the speed reducer 14a and the horizontal shaft pump 11 as shown in FIG. 6C, or between the prime mover 12 and the speed reducer 14a as shown in FIG. 6D. may have been As yet another modification, the power transmission mechanism 14 may further include both a pulley 14b and a drive shaft 14c in addition to the speed reducer 14a, as shown in FIGS. 6E-6F. As shown in FIG. 6E, the pulley 14b and the drive shaft 14c may be arranged between the prime mover 12 and the reduction gear 14a in this order from the prime mover 12 side, or as shown in FIG. The drive shaft 14c may be arranged between the prime mover 12 and the speed reducer 14a in this order from the side of the speed reducer 14a. Alternatively, as shown in FIG. 6G, the pulley 14b and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11 in this order from the reduction gear 14a side, or as shown in FIG. 6H. In addition, the pulley 14b and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11 in this order from the horizontal shaft pump 11 side. Alternatively, as shown in FIG. 6I, the drive shaft 14c may be arranged between the prime mover 12 and the reducer 14a, and the pulley 14b may be arranged between the reducer 14a and the horizontal shaft pump 11. A pulley 14b may be positioned between the prime mover 12 and the reducer 14a, and a drive shaft 14c may be positioned between the reducer 14a and the horizontal shaft pump 11, as shown in 6E. 6A, 6B, and 6E to 6J, the speed reducer 14a is not limited to a parallel shaft gear speed reducer, and may be a planetary gear speed reducer.

In the example shown in FIGS. 2A to 2C, the frame 13 is installed so as to be in contact with the pump installation floor FL. Alternatively, as shown in FIGS. 5A and 5, the pedestal 13 may have a bracket shape and be fixed to a wall 21 or a pillar surrounding the installation space of the drainage station (not shown).

According to the second embodiment as described above, the same effects as those of the first embodiment can be obtained.

(Third embodiment)
Next, the pump equipment 10 which concerns on 3rd Embodiment is demonstrated. 3A is a plan view showing a schematic configuration of a pump facility 10 according to the third embodiment, FIG. 3B is a front view of the same, and FIG. 3C is a right side view of the same.

As shown in FIGS. 3A to 3C, in the third embodiment, as in the second embodiment, the prime mover 12 and the frame 13 are arranged so as not to overlap the horizontal shaft pump 11 in plan view. The third embodiment differs from the second embodiment in that the prime mover 12 is mounted on a pedestal 13 with its output shaft oriented parallel to and opposite to the main axis of the horizontal shaft pump 11 . different from the form. In the present embodiment, as in the second embodiment, the prime mover 12 and the frame 13 are arranged so as not to overlap the horizontal shaft pump 11 in a plan view, so that the prime mover 12 and the pump installation floor FL are separated from each other. The space in the height direction between them (the space under the frame) becomes an empty space, and as shown in FIGS. 4A and 4B, this empty space can accommodate auxiliary equipment such as the air tank 16a and the air compressor 16b. It becomes possible to effectively utilize the limited space of the drainage pump station. Moreover, since the space above the horizontal shaft pump 11 is free, there is an advantage that maintenance of the horizontal shaft pump 11 is easy.

In addition, in the example shown in FIGS. 3A to 3C, the power transmission mechanism 14 has only the speed reducer 14a. Thus, the power transmission mechanism 14 may further have a pulley 14b in addition to the reduction gear 14a. The pulley 14b may be arranged between the motor 12 and the speed reducer 14a as shown in FIG. 7A, or may be arranged between the speed reducer 14a and the horizontal shaft pump 11 as shown in FIG. 7B. may be As another modification, as shown in FIGS. 7C and 6D, the power transmission mechanism 14 may further include a drive shaft 14c having universal joints at both ends in addition to the speed reducer 14a. The drive shaft 14c may be arranged between the speed reducer 14a and the horizontal shaft pump 11 as shown in FIG. 7C, or between the prime mover 12 and the speed reducer 14a as shown in FIG. 7D. may have been As yet another modification, the power transmission mechanism 14 may further include both a pulley 14b and a drive shaft 14c in addition to the speed reducer 14a, as shown in FIGS. 7E-7F. As shown in FIG. 7E, the pulley 14b and the drive shaft 14c may be arranged between the prime mover 12 and the reduction gear 14a in this order from the prime mover 12 side, or as shown in FIG. The drive shaft 14c may be arranged between the prime mover 12 and the speed reducer 14a in this order from the side of the speed reducer 14a. Alternatively, as shown in FIG. 7G, the pulley 14b and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11 in this order from the reduction gear 14a side, or as shown in FIG. 7H. In addition, the pulley 14b and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11 in this order from the horizontal shaft pump 11 side. Alternatively, as shown in FIG. 7I, the drive shaft 14c may be arranged between the prime mover 12 and the reduction gear 14a, and the pulley 14b may be arranged between the reduction gear 14a and the horizontal shaft pump 11. A pulley 14b may be positioned between the prime mover 12 and the reducer 14a, and a drive shaft 14c may be positioned between the reducer 14a and the horizontal shaft pump 11, as shown in 7E. 7A, 7B, and 7E to 7J, the speed reducer 14a is not limited to a parallel shaft gear speed reducer, and may be a planetary gear speed reducer.

In the example shown in FIGS. 3A to 3C, the frame 13 is installed so as to be in contact with the pump installation floor FL. Alternatively, as shown in FIGS. 5A and 5, the pedestal 13 may have a bracket shape and be fixed to a wall 21 or a pillar surrounding the installation space of the drainage station (not shown).

The third embodiment as described above also provides the same effects as those of the first and second embodiments.

(Fourth embodiment)
Next, the pump equipment 10 which concerns on 4th Embodiment is demonstrated. FIG. 8A is a plan view showing a schematic configuration of the pump equipment 10 according to the fourth embodiment, FIG. 8B is its front view, and FIG. 8C is its right side view.

As shown in FIGS. 8A to 8C, in the fourth embodiment, similarly to the second and third embodiments, the prime mover 12 and the frame 13 are arranged so as not to overlap the horizontal shaft pump 11 in plan view. However, in the fourth embodiment, a bevel gear reducer is used as the reducer 14a, and the motor 12 is oriented such that its output shaft is perpendicular to the main shaft of the horizontal shaft pump 11 in plan view. It is different from the second and third embodiments in that it is installed on the pedestal 13 in a state where it is placed on the floor. In the present embodiment, as in the second and third embodiments, the prime mover 12 and the frame 13 are arranged so as not to overlap the horizontal shaft pump 11 in a plan view, so that the prime mover 12 and the pump installation floor FL The space in the height direction (the space under the frame) between and becomes an empty space, and as shown in FIGS. This makes it possible to effectively utilize the limited space of the drainage pump station. Moreover, since the space above the horizontal shaft pump 11 is free, there is an advantage that maintenance of the horizontal shaft pump 11 is easy.

In the example shown in FIGS. 8A to 8C, the power transmission mechanism 14 further has a pulley 14b in addition to the reducer 14a (bevel gear reducer). The pulley 14b may be arranged between the speed reducer 14a and the horizontal shaft pump 11 as shown in FIGS. 8A to 8C, or between the motor 12 and the speed reducer 14a as shown in FIG. may be placed in Even when a bevel gear reducer is used as the reducer 14a, the combination of the reducer 14a and the pulley 14b between the horizontal shaft pump 11 and the prime mover 12 allows the prime mover 12 to be positioned at a high height. It is possible to install. Further, when there is a change in the frame size or the like due to the renewal of the prime mover 12, the combination of the reduction gear 14a and the pulley 14b between the horizontal shaft pump 11 and the prime mover 12 can be used to reduce the installation level of the prime mover 12. can be adjusted. In the example shown in FIGS. 8A to 8C and 11B, the prime mover 12 and the pedestal 13 are installed closer to the suction port than the main shaft of the horizontal shaft pump 11 in plan view, but the output shaft of the prime mover 12 is positioned horizontally. 12A-12C and 15, the prime mover 12 and the cradle are oriented in a direction perpendicular to the main axis of the axial pump 11 in plan view. 13 may be installed on the side opposite to the suction port with respect to the main shaft of the horizontal shaft pump 11 in plan view.

As a modification, as shown in FIGS. 9C and 11C, the power transmission mechanism 14 may further include a drive shaft 14c instead of the pulley 14b in addition to the speed reducer 14a. The drive shaft 14c may be arranged between the speed reducer 14a and the horizontal shaft pump 11 as shown in FIG. 9C, or between the prime mover 12 and the speed reducer 14a as shown in FIG. 11C. may have been Even if a bevel gear speed reducer is used as the speed reducer 14a, by using the speed reducer 14a and the drive shaft 14c in combination between the horizontal shaft pump 11 and the prime mover 12, the prime mover 12 can be positioned at a high height. can be installed in In addition, when there is a change in the frame size or the like due to the renewal of the prime mover 12, the combination of the speed reducer 14a and the drive shaft 14c between the horizontal shaft pump 11 and the prime mover 12 can be used to facilitate the installation of the prime mover 12. It is possible to adjust the level. In the examples shown in FIGS. 9C and 11C, the prime mover 12 and the pedestal 13 are installed closer to the suction port than the main shaft of the horizontal pump 11 in plan view. 13C and 15C, the prime mover 12 and the pedestal 13 are oriented perpendicular to each other in plan view. It may be installed on the side opposite to the suction port with respect to the main shaft of the horizontal shaft pump 11 .

As yet another variation, as shown in FIGS. 9A, 9B, 10A-10C, 11A and 11B, power transmission mechanism 14 includes both pulley 14b and drive shaft 14c in addition to speed reducer 14a. may further have Specifically, for example, as shown in FIG. 11A, the pulley 14b and the drive shaft 14c may be arranged between the prime mover 12 and the reduction gear 14a in this order from the prime mover 12 side, or as shown in FIG. 11B. As shown, the pulley 14b and the drive shaft 14c may be arranged in this order from the speed reducer 14a side between the motor 12 and the speed reducer 14a. Alternatively, as shown in FIG. 9A, the pulley 14b and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11 in this order from the horizontal shaft pump 11 side, or as shown in FIG. 9B. Thus, the pulley 14b and the drive shaft 14c may be arranged between the speed reducer 14a and the horizontal shaft pump 11 in this order from the speed reducer 14a side. Alternatively, as shown in FIGS. 10A-10C, the drive shaft 14c may be arranged between the prime mover 12 and the reduction gear 14a, and the pulley 14b may be arranged between the reduction gear 14a and the horizontal shaft pump 11. Although not shown, the pulley 14b may be arranged between the prime mover 12 and the reduction gear 14a, and the drive shaft 14c may be arranged between the reduction gear 14a and the horizontal shaft pump 11. By using a combination of the speed reducer 14a, the pulley 14b, and the drive shaft 14c between the horizontal shaft pump 11 and the prime mover 12, the prime mover 12 can be installed at a higher height position. In the examples shown in FIGS. 9A, 9B, 10A to 10C, 11A and 11B, the prime mover 12 and the frame 13 are installed closer to the suction port than the main shaft of the horizontal shaft pump 11 in plan view. 13A, 13B, and 14A, as long as the output shaft of the prime mover 12 is oriented perpendicular to the main shaft of the horizontal shaft pump 11 in plan view. 14C, 15A and 15B, the prime mover 12 and the frame 13 may be installed on the opposite side of the suction port with respect to the main shaft of the horizontal shaft pump 11 in plan view.

According to the fourth embodiment as described above, the same effects as those of the first to third embodiments can be obtained.

Although the embodiments and modifications of the present invention have been described above by way of illustration, the scope of the present invention is not limited to these, and changes and modifications can be made according to the purpose within the scope described in the claims. is possible. In addition, each embodiment and modifications can be appropriately combined within a range in which the contents are not inconsistent.

10 pump equipment 11 horizontal shaft pump 12 prime mover 13 mount 14 power transmission mechanism 14a reducer 14b pulley 14c drive shaft 15 pump base 21 wall

Claims (9)

A plurality of pump facilities that can be installed in a predetermined installation space of a drainage pump station,
a horizontal shaft pump installed on the pump installation floor;
a prime mover;
a frame that supports the prime mover at a distance from the pump installation floor;
a power transmission mechanism for transmitting rotational power output from the output shaft of the prime mover to the main shaft of the horizontal shaft pump;
with
Pump equipment, wherein the power transmission mechanism has a speed reducer. 2. Pump equipment according to claim 1, wherein the power transmission mechanism further comprises a pulley. 3. The pump equipment according to claim 1, wherein the power transmission mechanism further has a drive shaft provided with universal joints at both ends. The pump facility according to any one of claims 1 to 3, wherein the prime mover and the frame are arranged so as to overlap with the horizontal shaft pump in a plan view. The pump facility according to any one of claims 1 to 3, wherein the prime mover and the frame are arranged so as not to overlap with the horizontal shaft pump in a plan view. The speed reducer is a bevel gear speed reducer,
6. Pumping equipment according to claim 5, wherein the output shaft of the prime mover is oriented perpendicular to the main shaft of the horizontal shaft pump in plan view. The pump equipment according to any one of claims 1 to 6, wherein the frame is installed in contact with the pump installation floor. The pump installation according to any one of claims 1 to 6, wherein said pedestal is fixed to a wall or pillar surrounding said installation space. A drainage pumping station in which a plurality of pump facilities according to any one of claims 1 to 8 are installed in a predetermined installation space.

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