JP2015075076A - Cooling structure of package-type rotary pump unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure of a package-type rotary pump unit capable of efficiently cooling the cooling air by suppressing ventilation resistance by making the cooling air rationally flow.SOLUTION: An inner housing 20 loaded with a pump body 11 and an electric motor 12 as components of a rotary pump device, is accommodated in a box-type outer housing 30, and includes cooling fins projected from an outer surface of the pump body and extended in the direction same as a rotating shaft. The component is disposed so that the rotating shaft of the component of the rotary pump device is extended in the longitudinal direction, an intake port 31a for cooling to introduce the cooling air of the rotary pump device, is formed on a front wall 31 of the outer housing 30, and an exhaust port 35b for cooling to exhaust the cooling air, is formed on a rear portion of a top wall 35 of the outer housing.

Description

  The present invention relates to a cooling structure for a package-type rotary pump unit provided by housing a pump body and an electric motor, which are constituent elements of a rotary pump device, in a box-shaped housing.

  The applicant previously stated, “A pneumatic device that generates negative or positive air pressure, such as a vacuum pump or a blower, a storage box that can store a plurality of the pneumatic devices and that is soundproofed by storing them in a closed space, and a pneumatic pressure A pneumatic device station for generating a cooling air flow that flows in one direction from the bottom to the top in the storage box in order to cool the storage box heated by the device " 1)). According to this, there is an effect that “a plurality of pneumatic devices can be centrally stored and soundproofed, and can be suitably cooled and centrally managed”.

  In addition, the applicant previously stated, “The package has a base portion having a cooling air intake port, a rotary pump and a driving device, and an opening so that the cooling air can be vented to the package storage space. A mounting shelf part, a centrifugal fan type impeller mounted coaxially on the rotary shaft of the rotary pump, and a pump coaxial fan having a ventilation casing as components, and exhaust of the pump coaxial fan (the upper part of the package) The side wall of the package is provided in a double structure so that it is sucked by bypassing at least a part of the storage space by the cooling fan, and the exhaust of the pump coaxial fan is introduced (into the side wall). A package-type rotary pump unit (see Patent Document 2) having a ventilation passage on one side wall portion in which a communication port is formed is proposed. According to this, there is an effect that “cooling air sucked from the outside can be used more efficiently and more efficient cooling can be performed”.

  However, both of the pneumatic equipment station and the package type rotary pump unit draw cooling air for cooling the pump body from both sides of the base of the package and are arranged at the top of the package. Compared to other configurations, the air is exhausted upward by one large blower. For this reason, the cooling air flows from the lower side to the upper side of the pump body placed horizontally, and the pump body could not be cooled reasonably. That is, it is difficult for the cooling air to flow uniformly along the direction of the cooling fins provided on the outer peripheral wall of the pump main body, and it is difficult to efficiently cool the airflow resistance to a small extent.

JP 2007-127114 A (first page) JP 2012-237215 A (first page)

The problem to be solved regarding the cooling structure of the package-type rotary pump unit is that, in the conventional package-type unit, the cooling air flows from the lower side to the upper side of the pump body placed horizontally. It is difficult to cool reasonably.
SUMMARY OF THE INVENTION An object of the present invention is to provide a package type rotary pump unit capable of efficiently cooling while suppressing cooling resistance by rationally flowing cooling air.

The present invention has the following configuration in order to achieve the above object.
According to one aspect of the cooling structure of the package-type rotary pump unit according to the present invention, the inner casing on which the pump body and the electric motor, which are constituent elements of the rotary pump apparatus, are housed in the box-shaped outer casing. The rotating shaft of the component of the rotary pump device is arranged such that the rotating shaft extends in the front-rear direction, and is provided so as to protrude from the outer surface of the pump body and extend in the same direction as the rotating shaft. A cooling inlet for introducing cooling air of the rotary pump device to the front wall of the outer casing, and the cooling air at the rear of the upper wall of the outer casing. An exhaust port for exhausting air is provided.

  Further, according to one aspect of the cooling structure of the package type rotary pump unit according to the present invention, the cooling pump is formed between the rear surface portion of the inner housing and the rear surface portion of the outer housing below the cooling exhaust port. The cooling air is discharged from the installation space where the configuration of the rotary pump device is arranged on the rear surface of the inner casing through the exhaust space and the cooling exhaust port. It can be characterized by comprising a blower.

  Further, according to one aspect of the cooling structure of the package-type rotary pump unit according to the present invention, the cooling inlet has an opening provided in front of the front wall, and the cooling air introduced from the opening is provided in the cooling inlet. A shield plate portion corresponding to the opening may be provided at a distance from the opening in the back direction of the outer casing so as to guide and sound-insulate the flow. .

  Further, according to one aspect of the cooling structure of the package type rotary pump unit according to the present invention, the pump main body and the electric motor, which are constituent elements of the rotary pump device, are arranged in a vertically superposed position. The rotation input shaft of the main body and the rotation output shaft of the electric motor are placed on the upper and lower shelves provided in the inner casing, and the rotation output is output by a power transmission mechanism using a pulley and a belt. Power can be transmitted from the shaft to the rotary input shaft.

Further, according to one aspect of the cooling structure of the package-type rotary pump unit according to the present invention, the upper and lower shelves provided in the inner casing are provided in the upper, middle, and lower three stages, and the upper and lower stages The pump main body is placed on the shelf and the electric motor is placed on the middle shelf, and the cooling intake is placed on the front surface of the front wall of the outer casing corresponding to the position in front of the electric motor. An opening of the mouth is provided and the shielding plate part is provided.
Further, according to one aspect of the cooling structure of the package type rotary pump unit according to the present invention, the package type rotary pump unit is provided as a module unit so that a plurality of package type rotary pump units can be installed adjacent to each other. It can be characterized by being configured accordingly.

  According to the cooling structure of the package-type rotary pump unit according to the present invention, there is a particularly advantageous effect that the airflow resistance can be suppressed to be small and the cooling can be efficiently performed by rationally flowing the cooling air.

It is the perspective view seen from the front side which shows the form example of the package type rotary pump unit which concerns on this invention. It is the perspective view seen from the back side of the state which removed the side wall and the rear wall so that the inside of the form example of FIG. 1 might be shown. It is a front view of the state which removed the front wall of the example of FIG. It is a side view of the state which removed the side wall of the example of a form of FIG. It is a rear view of the state which removed the rear surface wall of the example of a form of FIG. It is AA line (FIG. 3) sectional drawing of the example of a form of FIG. It is a BB line (Drawing 3) sectional view of the example of a form of Drawing 1. It is CC line (FIG. 3) sectional drawing of the example of a form of FIG. It is DD line (FIG. 3) sectional drawing of the example of a form of FIG. It is the EE line (FIG. 4) sectional drawing of the form example of FIG. FIG. 5 is a cross-sectional view taken along line FF (FIG. 4) of the embodiment of FIG. 1. It is a perspective view which shows the state at the time of removing the pump main body of the example of FIG. It is a perspective view which shows the example of the form of the rotary pump system which used multiple package type rotary pump units of FIG. 1 as a module unit.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a package type rotary pump unit according to the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 to 13).
The package-type rotary pump unit 10 is configured by housing an inner housing 20 on which a pump body 11 and an electric motor 12 which are components of a rotary pump device are mounted in a box-type outer housing 30. ing. The rotary pump device can be used as a pneumatic device such as a vacuum pump or a blower.

The front wall 31 and the top wall 35 of the outer housing 30 are provided with openings for performing intake and exhaust of cooling air that cools the components of the rotary pump device. A front wall 31 of the outer casing 30 is provided so as to be openable and closable for maintenance of the rotary pump device. On the other hand, the left and right side walls 32 and the rear wall 33 of the outer housing 30 are provided as closed surfaces that do not have openings related to intake and exhaust air related to cooling air.
Further, the present invention is not limited to this embodiment, and is not a form in which the inner housing 20 and the outer housing 30 are distinguished from each other, and the pump main body is formed on the front wall and the top wall of one box-shaped housing. 11 includes an opening related to intake / exhaust according to No. 11 and intake / exhaust related to cooling air, and has the same effect.
In the present embodiment, the front wall 31 and the top wall 35 of the outer housing 30 are provided with openings for performing intake and exhaust of the pump body 11 of the rotary pump device. The side wall 32, the rear wall 33, and the base portion 34 are provided as closed surfaces that do not have openings related to intake / exhaust related to the pump body 11 and intake / exhaust related to cooling air.

  According to this, the package type rotary pump unit 10 can be appropriately modularized, and can be appropriately disposed at an installation place restricted as a module unit. For example, a plurality of package-type rotary pump units can be appropriately installed in a side-by-side configuration and where there is no space behind, and can cope with a large processing flow rate. More specifically, as shown in FIG. 13, a plurality of package-type rotary pump units 10 can be installed in a state where the side wall surfaces are in close contact with each other, and the rear surface can also be installed on the wall at the installation location. Space can be planned. That is, the left and right side surfaces and the rear surface of the outer housing 30 are in a closed form, and are surfaces that are not used for normal maintenance management. By adopting the form using only the upper surface, the degree of freedom related to the installation of the package type rotary pump unit 10 is remarkably improved. Further, the inner casing 20 is a casing independent of the outer casing 30, and the inner casing 20 can be managed as a module. According to this, the external shape of the outer casing 30 can be manufactured according to customer requirements, and the delivery lead time can be shortened by inventory management of the inner casing 20. Furthermore, the internal housing 20 can be taken out as a unit during maintenance, and the maintenance can be simplified.

  In addition, according to the present embodiment, the outer casing 30 is a rectangular box that is slightly larger than the inner casing 20, and the rectangular inner casing 20 is accommodated to store the double structure. It has become. For this reason, soundproof performance can be improved. Further, the inner housing 20 has a structural strength that can appropriately hold a state in which the components of the rotary pump device are fixed so that the components of the rotary pump device can be appropriately supported. That is, the strength of the casing in which they are mounted is increased so that alignment between the pump body 11 and the electric motor 12 is achieved. As described above, the structural strength of the inner housing 20 is increased and the components of the rotary pump device are appropriately supported, so the outer housing 30 is lightened except for the base portion 34 that requires structural strength ( It has a structure that can reduce the thickness of the sheet metal). Thus, it is possible to reduce the cost by rationally configuring the double structure.

  Further, in this embodiment, the components are arranged so that the rotation shafts of the components of the rotary pump device extend in the front-rear direction, and the gear box 11c of the pump body 11 controls the level of the lubricating liquid in the gear box 11c. It is provided on the front end side of the pump body 11 for easy confirmation. The end face of the gear box 11c, which is the front end of the pump body 11, is provided with a liquid level window 11d for confirming the liquid level of the lubricating liquid and a drain 11e used when the lubricating liquid is replaced. ing. The rotation shafts of the components of the rotary pump device are at least the rotation input shaft 11 a of the pump body 11 and the rotation output shaft 12 a of the electric motor 12.

According to this, there is an advantage that the liquid level of the lubricating liquid in the gear box 11c requiring the most frequent maintenance can be easily confirmed, and maintenance management such as replacement of the lubricating liquid can be easily performed.
Further, a viewing window 31d is provided on the front wall 31 of the outer casing 30 in accordance with the height of the liquid level window 11d of the gear box 11c. According to this, the level of the lubricating liquid can be easily confirmed without opening the front wall 31, and the workability of daily inspection can be improved.

  The pump body 11 of the present embodiment is a multistage claw pump, and includes a gear box 11c, a bearing portion 11g, a rotating rotor, and a front pump cylinder portion 11h and a rear pump cylinder portion 11i that constitute a pneumatic chamber. The muffler part 11m is arranged in a series state in the front-rear direction and connected and integrated (see FIGS. 6, 7 and 9). The package unit configuration of the present invention is not limited to the multi-stage claw pump as described above, but can be applied to a single-stage claw pump and other rotary pump devices. Examples of the rotary pump device include a rotor non-contact type biaxial rotary pump such as a roots pump and a screw pump, and a vane pump. The unit configuration of the present invention can be applied to these.

  In this embodiment, the pump main body 11 and the electric motor 12 which are constituent elements of the rotary pump device are arranged in a position where they are overlapped in the vertical direction, and the rotational input shaft 11a of the pump main body 11 and the rotational output of the electric motor 12 are output. The shaft 12a is placed on the upper and lower shelves provided in the inner housing 20 so as to protrude forward. The power is transmitted from the rotation output shaft 12 a to the rotation input shaft 11 a by the power transmission mechanism 13 including the pulleys 11 b and 12 b and the belt 14.

  According to this, since each rotating shaft 11a, 12a protrudes ahead, the power transmission mechanism 13 will be located in the front part of the package type rotary pump unit 10, and daily maintenance of the power transmission mechanism 13 ( In this embodiment, maintenance such as belt adjustment can be easily performed from the front. Moreover, since the pump main body 11 and the electric motor 12 are arranged in a position where they are overlapped in the vertical direction, the rotary pump device can be configured compactly in the package. For this reason, it is possible to rationally install a rotary pump device having a large processing flow rate in a small installation space.

Furthermore, in this embodiment, the shelf provided in the inner housing 20 is provided in the upper, middle, and lower three stages 20a, 20b, and 20c, and the pump bodies 11 and 11 are provided in the upper and lower shelf parts 20a and 20c. The electric motor 12 is placed on the shelf 20b in the middle stage.
According to this, the two pump main bodies 11 and 11 can be efficiently accommodated in the inner housing 20 in the form of sharing one electric motor 12 as a power device, and the rotary pump device is more compact and rational in the package. Can be configured. In addition, the pump housing 11 and the electric motor 12 that are noise generation sources can be stored in the inner housing 20 as described above, and the inner housing 20 is built in the outer housing 30. Since the inner casing 20 is a casing independent of the outer casing 30, the noise reduction performance can be improved.

In addition, compared with the upper pump body 11, the lower pump body 11 is arranged in a form protruding to the front side. According to this, the belt 14 is hung between the back side of the pulley 12b of one electric motor 12 and the pulley 11b of the upper pump body 11, and the pulley 11b of the lower pump body 11 and the front side of the pulley 12b. The power transmission mechanism 13 can be configured by winding the belt 14 between the two. Since the lower pump body 11 is in the foreground, the entire power transmission mechanism 13 is arranged so that the operator can easily visually recognize the maintenance work.
A tension roller 14a is arranged so that the tension of the belt 14 can be adjusted via a tension adjusting mechanism 14b (see FIG. 3) that can move and fix the tension roller 14a in the left-right direction.

  In the present embodiment, a cooling intake port 31 a for introducing cooling air (see arrows (see FIGS. 1 and 6 to 11)) of the rotary pump device is provided on the front wall 31 of the outer housing 30. The cooling structure of the package type rotary pump unit is configured by providing an exhaust port 35b for exhausting cooling air at the rear of the upper surface wall 35 of the outer casing 30. According to this, the cooling air flows from the front part to the rear part in the package constituted by the outer casing 30 and the inner casing 20. For this reason, the flow of cooling air becomes one direction, and cooling efficiency can be improved.

  Further, in the embodiment of the cooling structure of the package type rotary pump unit according to the present invention, the inner casing 20 on which the pump body 11 and the electric motor 12 which are constituent elements of the rotary pump device are mounted is a box-shaped outer casing 30. And the components are arranged so that the rotation shafts (rotation input shaft 11a, rotation output shaft 12a, etc.) of the components of the rotary pump device extend in the front-rear direction and the pump. A cooling fin 11f and a motor cooling fin 12f are provided so as to protrude from the outer surface of the main body 11 and the electric motor 12 and extend in the same direction as the rotation axis. According to this, the cooling air flows from the front toward the back along the direction of the cooling fins 11f provided to protrude from the outer surface of the pump body 11, and the pump body 11 is effectively Can be cooled. In addition, the flow of motor cooling air generated by the motor self-cooling fan 12c flows from the back to the front along the direction of the motor cooling fins 12f provided to protrude from the outer surface of the electric motor 12. The electric motor 12 can be effectively cooled. That is, the direction of the cooling fins 11f and the motor cooling fins 12f and the direction of the cooling airflow are parallel to the axis (the direction of the rotating shaft), and the airflow resistance is suppressed to be small and efficient heat is generated. The pump body 11 and the electric motor 12 can be efficiently cooled.

  In this embodiment, the front pump cylinder portion 11h of the pump body 11 is arranged on the front side of the package with respect to the rear pump cylinder portion 11i, and the muffler portion 11m is located on the back side with respect to the rear pump cylinder portion 11i. It is arranged. Therefore, the pump inlet port 11j is provided corresponding to the position of the front pump cylinder portion 11h, the rear pump cylinder portion 11i is connected to the muffler portion 11m, and the exhaust port 11n of the muffler portion is a muffler merging flow described later It is connected to the chamber 26 via a conduit 27. According to this, the air compressed by the pump cylinder part 11h of the front stage is a pump device that is further compressed by the pump cylinder part 11i of the rear stage, and the pump cylinder part of the rear stage rather than the pump cylinder part 11h of the front stage. 11i increases the air compression rate.

  Since the pump main body 11 is arranged in this manner, the pump main body 11 is in a situation where the back side is at a higher temperature than the front side of the package. That is, the pump body 11 is configured to gradually increase in temperature toward the back of the package, and the cooling air flows from the front side of the package toward the back side. Thus, the cooling air flows from the low temperature side of the pump body 11 to the high temperature side and cools, so that the low temperature side of the pump body 11 is not affected by the heat of the high temperature side and the cooling efficiency can be improved. it can.

  The cooling inlet 31a is provided with an opening 31b on the front surface of the front wall 31. The cooling air inlet 31a is bent from the opening 31b to guide and cool the flow of cooling air. A shielding plate portion 31c corresponding to the opening 31b is provided at an interval in the depth direction of the body 30. According to this, the cooling air can be appropriately sucked from the opening 31b of the front wall 31, and there is an appropriate sound insulation effect.

  In addition, 31x is an upper opening (see FIGS. 6 and 7), and is an upper intake port through which cooling air whose flow is bent by the shielding plate portion 31c exits in the cooling intake port 31a. The cooling air exiting from the upper opening 31x is sucked by an upper blower 15 described later so as to mainly cool the upper pump body 11. Reference numeral 31z denotes a lower opening (see FIGS. 6, 8, and 9). The cooling inlet 31a is a lower inlet through which cooling air whose flow is bent by the shielding plate portion 31c exits. . The cooling air exiting from the lower opening 31z is sucked by a lower blower 15 described later so as to mainly cool the lower pump body 11.

  In this embodiment, an opening 31b is provided on the front surface of the front wall 31 of the outer housing 30 corresponding to the position in front of the electric motor 12, and a shielding plate portion 31c is provided. According to this, the flow of motor cooling air (see the arrows in FIGS. 6 and 8) by the motor self-cooling fan 12c (see FIGS. 2, 6 and 8) provided at the rear of the electric motor 12 is not obstructed. As described above, it is possible to improve the cooling efficiency by guiding the flow of the cooling air introduced from the opening 31b of the front wall 31, and to obtain a suitable sound insulation effect.

  A cooling air coarse dust filter 36 is attached to the opening 31b so as to purify the sucked cooling air. Thus, since the cooling air coarse dust filter 36 is in the center of the front surface, it is easy to check the contamination of the filter, and maintenance (cleaning of the filter) can be performed reliably. Reference numeral 37 denotes a sound absorbing material, which is pasted so that a panel-shaped material is laminated on the inner surface of the shielding plate portion 31c in order to enhance the noise reduction effect. Although the sound absorbing material is not shown in detail, it can be laminated on the respective wall surfaces of the inner casing 20 and the outer casing 30 to improve the silencing effect.

  Further, the form of the front surface portion 21 of the inner housing 20 includes an upper ventilation opening 21a, a middle ventilation opening 21b, and a lower ventilation opening 21c that connect the intake space 20s and the installation space 20x as shown in FIG. Thus, it is provided in the shape narrowed suitably instead of opening the whole surface. According to this, it can be optimized so that the flow of the cooling air can be regulated and guided, and the cooling efficiency can be increased. Here, the intake space 20s is a space between the front wall 31 of the outer casing 30 and the front portion 21 of the inner casing 20, and is a space in which the power transmission mechanism 13 is stored. Yes.

  Note that the upper and lower ventilation openings 21a and 21c on which the pump body 11 is placed have the ventilation openings 21a and 21c so that the cooling air flows along the cooling fins 11f provided in the pump body 11. Is in a narrowed form. Further, the middle ventilation opening 21b is a stage on which the electric motor 12 is mounted, and the motor self-cooling fan 12c of the electric motor 12 causes the motor cooling air to flow from the back to the front, thereby reducing the ventilation resistance. Thus, the openings are larger than the other ventilation openings 21a and 21c. The motor cooling air flows along the motor cooling fins 12f as described above, and after exiting from the middle vent opening 21b, the cooling air and the intake space 20s of the upper and lower pump bodies 11, 11 are used. It merges, is sucked in by the blower 15, and is finally discharged to the outside through the silencer merging chamber 26 through the exhaust port 35b.

The side wall portion 22 of the inner housing 20 is provided with an opening 22a for introducing the electric motor cooling air, which is an opening communicating with the ventilation space 12s on the back side of the middle stage where the electric motor 12 is placed. ing. According to this, the cooling air sucked from the cooling inlet 31a can be supplied to the motor self-cooling fan 12c as the motor cooling air, and the cooling performance can be improved. That is, according to the opening 22 a for introducing the electric motor cooling air, the motor self-cooling fan 12 c is pumped by flowing through the space between the side wall portion 22 of the inner housing 20 and the side wall 32 of the outer housing 30. Cooling air that is not affected by the heat generated by the main body 11 and the electric motor 12 can be sucked, and the electric motor 12 can be efficiently cooled.
Reference numeral 12p denotes a partition plate for partitioning the ventilation space, which narrows the ventilation space 12s on the back side of the electric motor 12, prevents the cooling air from stagnation, and cuts off the heat conducted from the silencer merge chamber 26 and the like. It is provided to do.

  As described above, the temperature of the components of the rotary pump device can be reduced by cooling using cooling air, thereby improving pump quality, such as extending the life of parts and improving performance by reducing the amount of rotor clearance in the cylinder. Is possible. Further, reliability can be improved by lowering the temperature rise value of the motor winding. Furthermore, the noise level as a pump device can be reduced by an appropriate cooling effect.

  In the present embodiment, an intake opening 35 a is provided in the upper surface wall 35 of the outer casing 30. In this embodiment, the intake opening 35 a is an opening through which the intake pipe 16 b of the intake filter device 16 is inserted, and thereby serves as an opening for performing intake air related to the pump body 11. Reference numeral 16a denotes an intake port of the intake filter device. From the intake port 16a of the intake filter device, the air passes through the filter of the intake filter device 16, and then, in this embodiment, passes through the intake pipe 16b that is branched and communicated with the upper and lower pump bodies 11, 11, and above that. Intake into the lower pump bodies 11, 11 is performed.

Further, as shown in FIG. 13, the package type rotary pump unit 10 of the present embodiment is a module unit provided with a configuration for performing mechanical operation excluding power distribution and control, and the power distribution control panel unit 50 is a separate module. It is provided as a unit.
According to this, a large-sized rotary pump apparatus system with a large processing flow rate can be constructed simply and appropriately.

  Furthermore, in this embodiment, as shown in FIG. 12, the pump main body 11 and the electric motor 12 which are constituent elements of the pump device are connected to the front of the outer casing 30 via the detachable shelf (20a ′, 20b ′). It can be pulled out and maintained and replaced. The upper shelf 20a includes a detachable shelf 20a ′ to which the pump body 11 is fixed and supported, and the middle shelf 20b includes a detachable shelf 20b ′ to which the electric motor 12 is fixed and supported. Yes. According to this, maintenance work can be performed efficiently. That is, since the pump main body 11 and the electric motor 12 can be pulled out on the front side where daily inspection is performed, even when a plurality of module units (packaged rotary pump units 10) are installed side by side as shown in FIG. Maintenance and replacement work can be done.

  Further, in the configuration example of the package type rotary pump unit according to the present invention, the inner bottom surface 34 a of the outer casing 30 and the inner casing are arranged so that the inner casing 20 can be leveled with respect to the base portion 34 of the outer casing 30. Between the bottom surface 24a of the body 20, a leveling mechanism 40 including a vibration damping material 41 that absorbs vibration and a height adjusting member 42 as constituent elements is provided. Note that the bottom surface 24 a of the inner housing 20 in the present embodiment is configured by the lower surface of the bottom plate portion 24 of the inner housing 20.

  According to this, with respect to the outer casing 30, the inner casing 20 that is disposed at the site where the level is roughly leveled and is provided independently in the outer casing 30, More accurate leveling can be performed. The leveling mechanism 40 of the present invention has a structure that can be easily leveled using the height adjusting member 42 and can appropriately absorb vibrations of the pump body 11 and the electric motor 12 by the damping material 41. It has a structure. The leveling mechanism 40 is built in the outer casing 30 and is not affected by external factors (for example, the degree of maintenance of the installation surface), and in particular, the surface with which the damping material 41 contacts is constant. It has become a thing. For this reason, the leveling operation can be performed appropriately and easily, and the leveling with high reliability can be performed. As a vibration suppression measure, when a damping material made of an elastic material such as a rubber leg is attached to each of the pump body 11 and the electric motor 12, the pulley 11b of the pump body 11 and the pulley 12b of the electric motor 12 are stretched by the elastic material. The alignment will be lost. On the other hand, in this embodiment, two pump bodies 11 and one electric motor 12 are mounted in one casing (inner casing 20) without using a damping material, and the inner casing is provided. Since the body 20 is subjected to vibration suppression measures, appropriate vibration suppression can be performed without breaking the alignment.

  The leveling mechanism 40 of the present embodiment is configured such that the damping material 41 is provided at at least three locations, and the height adjusting member 42 is provided at two locations on the front side of the inner housing 20. According to this, the leveling mechanism 40 can be configured with a simple configuration.

More specifically, the damping material 41 is provided as an elastic material such as a rubber material, and is disposed at four locations on the inner bottom surface 34a of the base portion 34 of the outer housing 30. Each is positioned in a state where it is engaged with the inner bottom surface 34a of the outer housing 30 and the bottom surface 24a of the inner housing 20, and a height adjusting member 42 is provided at the front portion of the inner housing 20 and at the left and right positions. .
According to this, leveling can be performed appropriately and easily using the height adjusting member 42 with a simple configuration, and vibration can be absorbed very suitably by the damping material 41. As the damping material 41, a ring-shaped rubber material stacked in two stages with a metal plate can be used. Further, as the height adjusting member 42, an adjuster that is configured by bolts and nuts and provided with support legs can be used.

In this embodiment, the components of the rotary pump device are arranged and mounted in the inner casing 20 so that the center of gravity of the inner casing 20 is located on the front side. For example, the electric motor 12 is arranged on the front side of the inner housing 20 as in this embodiment, or the relatively light muffler portion 11m is arranged on the rear side of the inner housing 20, The center of gravity of the housing 20 can be positioned on the front side.
According to this, since the inner housing 20 tends to tilt forward, it can be easily leveled by a standard work method of adjusting with the height adjustment member 42 in a direction to correct the forward tilt. There is an advantage that can be improved.

  Furthermore, in the present embodiment, the entire package type rotary pump unit 10 is provided so as to be lifted via a raised locked portion 25a attached to the upper surface portion 25 of the inner casing 20. As the locked portion 25a, an eyebolt can be used as shown. Since the inner casing 20 of the present embodiment is provided with high structural strength, the entire package type rotary pump unit 10 can be suitably lifted and transferred.

  An example of the exhaust structure of the package type rotary pump unit according to the present invention is that the inner housing 20 on which the pump main body 11 and the electric motor 12 which are constituent elements of the rotary pump device are mounted is inside the box-shaped outer housing 30. An exhaust port 35b for exhausting cooling air is provided at the rear of the upper surface wall 35 of the outer casing 30, and the rear wall 23 of the inner casing 20 and the outer casing are disposed below the exhaust port 35b. An exhaust space 20z formed between the body 30 and the rear wall 33 is provided, and cooling air is supplied to the rear wall portion 23 of the inner housing 20 from the installation space 20x in which the configuration of the rotary pump device is arranged. There is provided a blower 15 that discharges through the exhaust space 20z and the exhaust port 35b, and a sound deadening confluence chamber 26 that silences the exhaust space 20z by combining the exhaust of the pump body 11 and the cooling air exhaust. It has been kicked.

The exhaust (pump exhaust) of the pump body 11 is connected to the exhaust port 11n of the muffler portion and the pump exhaust junction 26b by the exhaust pipe 27, so that the cooling air exhaust by the lower blower 15 is introduced. It is merged into the muffler merge chamber 26.
According to this, the pump exhaust is muffled in both the muffler portion 11m and the muffler merging chamber 26, and the pump exhaust is merged with the cooling air, so that the temperature is lowered and exhausted in an appropriate state. . That is, according to the total exhaust gas in which the pump exhaust gas and the cooling air are merged, the exhaust gas is discharged through the exhaust port 35b in a state where the sound is silenced and the temperature is at an appropriate level.
Note that a centrifugal fan can be used as the blower 15, and in this embodiment, a sirocco fan is installed as shown in FIG.

  In the present embodiment, the shelf provided in the inner housing 20 is placed in the middle so that the pump main body 11 and the electric motor 12 which are components of the rotary pump device are arranged in the vertical direction. Provided in the lower three stages 20a, 20b, 20c, the pump body 11 is placed on the upper and lower shelves 20a, 20c, and the electric motor 12 is placed on the middle shelf 20b. 12 is provided with an opening 31b of the cooling inlet 31a on the front surface of the front wall 31 of the outer casing 30 corresponding to the front position of 12, and the flow of the cooling air introduced from the opening 31b is bent and guided and sound-insulated Thus, a shielding plate portion 31c corresponding to the opening 31b is provided at a distance from the opening 31b in the back direction of the outer housing 30.

The muffler merge chamber 26 includes a middle expansion portion 26a formed so that the cross-sectional area of the muffler merge chamber 26 is increased and widened at a height position corresponding to the space of the middle step 20b of the shelf, The exhaust (pump exhaust) of the pump main body 11 is joined to the middle expansion portion 26a. That is, as shown in FIG. 10, in the middle expansion portion 26 a, the cooling air exhaust that is exhausted upward from the lower blower 15 and enters the muffler merge chamber 26 is combined with the pump exhaust. .
According to this, a silencing effect due to the volume of the silencing merging chamber 26 and a silencing effect due to sound interference when different sound sources are merged are generated, and noise generation can be reduced. Further, the upper stage side of the middle expansion part 26a is in a state of narrowing the flow path, and the upper throttle flow path 26c is formed. The upper throttle channel 26c also has a silencing effect and can reduce noise generation.

A blower 15 is arranged for cooling the pump main body 11 at a height position corresponding to the upper stage of the shelf, and the exhaust direction of the upper blower 15 is arranged downward and discharged from the upper blower 15. A guide wall 15a is provided so that the direction of the exhausted gas can be guided and changed upward.
According to this, the exhaust sound does not go directly to the outside, the wind noise is reduced, and the silencing effect can be improved. Further, the exhaust from the upper blower 15 is combined with the mixed flow of the cooling air exhaust and the pump exhaust from the lower blower 15 in the upper throttle passage 26c, and the upper throttle passage 26c. Due to the resulting venturi effect, exhaust can be effectively discharged.

  Further, these blowers 15 are arranged on an extension line of the axis (longitudinal direction) of each pump body 11. For this reason, the cooling air flows linearly as a one-way flow from the front side to the back side, the ventilation resistance can be suppressed to a small value, and the cooling efficiency can be improved. Reference numeral 15s denotes a ventilation space, which is provided between the muffler portion 11m of each pump body 11 and the air inlet of the blower 15 as a space for smoothly flowing cooling air.

  As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

DESCRIPTION OF SYMBOLS 10 Package type rotary pump unit 11 Pump main body 11a Rotation input shaft 11b Pulley 11c Gear box 11d Liquid level window 11e Drain 11f Cooling fin 11g Bearing part 11h Previous pump cylinder part 11i Rear pump cylinder part 11j Pump inlet 11m Muffler 11n Exhaust port of muffler 12 Electric motor 12a Rotation output shaft 12b Pulley 12c Motor self-cooling fan 12f Cooling fin 12p Partition plate partitioning the ventilation space 12s Ventilation space 13 Power transmission mechanism 14 Belt 14a Tension roller 14b Tension adjustment mechanism 15 Blower 15a Guide wall 15s Ventilation space 16 Intake filter device 16a Inlet port of intake filter device 16b Intake pipe 20 Inner housing 20a Upper shelf 20a 'Detachable shelf 20b Medium 20b 'Detachable shelf 20c Lower shelf 20s Intake space 20x Installation space 20z Exhaust space 21 Front 21a Upper ventilation opening 21b Middle ventilation opening 21c Lower ventilation opening 22 Side wall 22a Electric motor cooling Opening for air introduction 23 Rear wall portion 24 Bottom plate portion 24a Bottom surface 25 Upper surface portion 25a Locked portion 26 Silencing confluence chamber 26a Middle expansion portion 26b Pump exhaust confluence 26c Upper throttle passage 27 Exhaust pipe 30 Outer casing 31 Front wall 31a Cooling air inlet 31b Opening 31c Shielding plate part 31d Viewing window 31x Upper opening 31z Lower opening 32 Side wall 33 Rear wall 34 Base part 34a Inner bottom surface 35 Upper surface wall 35a Intake opening 35b Exhaust port 36 Rough air for cooling air Dust filter 37 Sound absorbing material 40 Leveling mechanism 41 Damping material 42 Height Sei member 50 power distribution control panel unit

Claims (6)

  An inner casing on which a pump body and an electric motor, which are constituent elements of a rotary pump device, are housed in a box-shaped outer casing, and a rotating shaft of the constituent elements of the rotary pump device extends in the front-rear direction. The rotary pump device is provided on the front wall of the outer casing, the cooling pump being provided on the front wall of the outer casing, the cooling fin provided on the outer surface of the pump body and extending in the same direction as the rotation shaft. A package type rotary pump characterized in that a cooling air inlet for introducing the cooling air is provided, and an exhaust port for exhausting the cooling air is provided at the rear part of the top wall of the outer casing. Unit cooling structure.   An exhaust space formed between the rear surface portion of the inner housing and the rear surface portion of the outer housing is provided below the cooling exhaust port, and the rotary pump device is provided on the rear surface portion of the inner housing. 2. The cooling of the package type rotary pump unit according to claim 1, further comprising a blower that discharges the cooling air from the installation space in which the configuration is arranged through the exhaust space and the cooling exhaust port. Construction.   The cooling inlet is provided with an opening in front of the front wall, and the cooling air introduced from the opening is bent to guide and sound-insulate from the opening so as to be insulated. 3. The cooling structure for a package type rotary pump unit according to claim 1, wherein a shielding plate portion corresponding to the opening is provided at a distance from each other.   The pump main body and the electric motor, which are components of the rotary pump device, are arranged in a vertically stacked position so that the rotation input shaft of the pump main body and the rotation output shaft of the electric motor protrude forward. The power is transmitted from the rotation output shaft to the rotation input shaft by a power transmission mechanism including a pulley and a belt, which is placed on an upper and lower shelf provided in the inner casing. 4. The cooling structure of the package type rotary pump unit according to any one of 3 above.   Upper and lower shelves provided in the inner casing are provided in three upper, lower, and lower shelves, and the pump body is placed on the upper and lower shelves, and the electric motor is mounted on the middle shelves. Is mounted, and the opening of the cooling inlet is provided in front of the front wall of the outer casing corresponding to the front position of the electric motor, and the shielding plate portion is provided. The cooling structure of the package type rotary pump unit according to claim 4.   The package-type rotary pump unit is configured to be provided as a module unit so that a plurality of package-type rotary pump units can be installed adjacent to each other. Cooling structure for package type rotary pump unit.

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