JP2007231873A - Pedestal-integrated pump - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pedestal-integrated pump which can be mounted easily and for a short period of time and can reduce the cost of construction. <P>SOLUTION: The pedestal-integrated pump 1 is constituted by integrally connecting a vertical pump 10, a lower pedestal 40 mounted on an installation platform (floor) 275 while suspending the vertical pump 10 and an upper pedestal 60 arranged on the lower pedestal 40 and having thereon a pump drive mechanism 80 for driving the vertical pump 10 to one another. By surrounding a space defined between the upper pedestal 60 and the lower pedestal 40 by discharge flow path formation members 41, 61, 71, a discharge flow path 75 for liquid exhausted by the vertical pump 10 is formed and the fluid is discharged from a discharge opening 73 thereof. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a stand-integrated pump.

  Conventionally, as shown in FIG. 4, a vertical shaft pump 300 installed in a pump station or the like has a pump rotating body (an impeller and a shaft) inside a casing 310 including a suction bell mouth 311, a discharge bowl 313, a suspension pipe 315, and the like. Etc.), a discharge casing 317 is connected to the upper part of the casing 310, and a drive mechanism comprising a prime mover, a speed reducer, etc. on a gantry 330 installed on the upper part of the discharge casing 317 with a shaft pulled out from the upper part of the discharge casing 317 350 (see, for example, FIG. 6 of Patent Document 1). Then, by driving the drive mechanism 350 and rotating the pump rotating body, the water in the suction water tank 370 is sucked from the suction bell mouth 311 and discharged from the discharge pipe 319 connected to the discharge casing 317.

  When this vertical shaft pump 300 is installed in a pump station or the like, a pump base 377 is first fixed to the floor 375 above the suction water tank 370, and then a casing 310 (suction bell mouth 311, discharge bowl 313 is attached to the pump base 377. The suspension pipe 315) is attached and suspended, and the pump rotating body is accommodated therein. Next, the discharge casing 317 is connected to the pump base 377, and the gantry 330 is installed on the discharge casing 317. Next, a drive mechanism 350 is installed on the gantry 330 and centered, and a discharge pipe 319 is connected to the discharge casing 317.

That is, in the conventional installation work of the vertical shaft pump 300, the installation process of the casing 310, the pump rotating body, the discharge casing 317, the mount 330, the drive mechanism 350, and the discharge pipe 319 is advanced in series. For this reason, conventionally, there are many on-site assembly processes at the pumping station, and there are problems that the process cannot be shortened and the construction cost cannot be reduced because of the process progress in the series.
JP 2002-5094 A

  The present invention has been made in view of the above points, and an object of the present invention is to provide a gantry-integrated pump that can perform installation work easily and in a short time, and can reduce the construction cost. is there.

  According to the first aspect of the present invention, the vertical pump, the lower frame installed on the installation table in a state where the vertical pump is suspended, and the vertical pump installed on the lower frame and driving the vertical pump thereon A gantry-integrated pump characterized by integrally coupling an upper gantry on which a pump drive mechanism is installed. Here, the pump drive mechanism may be a prime mover such as an engine or an electric motor, or may be a transmission such as a speed reducer connected between the prime mover and the shaft of the vertical shaft pump.

  The invention according to claim 2 of the present application is characterized in that a discharge channel for liquid discharged from the vertical shaft pump is formed by surrounding a space formed between the upper frame and the lower frame with a discharge channel forming member. The pedestal integrated pump according to claim 1.

  According to the invention described in claim 1 of the present application, the vertical pump, the lower frame, and the upper frame are integrally combined to constitute the frame-integrated pump. Therefore, the vertical axis pump, the upper frame, and the lower frame are previously installed in the factory. It can be integrated and assembled and centered, and on-site installation can be completed simply by installing and fixing it on the civil engineering structure. This greatly reduces the number of processes and reduces construction costs. Can be achieved.

  Further, since the upper frame and the lower frame are integrated, the discharge of the liquid discharged by the vertical pump can be performed simply by surrounding the space formed between them with the discharge flow path forming member as in the invention of claim 2 of the present application. The flow path can be formed, the piping on the discharge side can be omitted, and the connection work is not necessary (simplified), and further, the process can be shortened and the construction cost can be reduced.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic cross-sectional view showing an example of a gantry-type pump 1 constructed using the present invention. As shown in the figure, the gantry-integrated pump 1 is a gantry-integrated vertical pump, and includes a vertical pump 10 in which a pump rotating body (an impeller 35 and a shaft 37) is accommodated in a casing 20; The lower frame 40 installed on the floor (installation table) 275 in a suspended state, the upper frame 60 installed on the upper part of the lower frame 40, and the vertical pump 10 installed on the upper frame 60 to drive the vertical shaft pump 10 The pump drive mechanism 80 is integrally coupled (unitized). Each component will be described below.

  The casing 20 is configured by connecting and integrating a discharge bowl 25 and a suspension pipe 27 on a suction bell mouth 21. Here, a suction port 21 a is provided in the lower outer periphery of the suction bell mouth 21. The suspension pipe 27 has a cylindrical shape, and is formed in a shape that gradually opens outward in the circumferential direction, that is, in the shape of a cage. A ring-shaped pump base portion 27a is provided at the upper end of the suspension tube 27, and the suspension tube 27 is attached to the lower frame 40 in a watertight manner and suspended by the pump base portion 27a. A head cover 50 having a fixed part 51 and a movable part 55 is installed from the inner center to the upper part of the suspension pipe 27. The head cover 50 has a cylindrical shape as a whole, and is formed in a shape that gradually opens outward in the circumferential direction, that is, in the shape of a cage, and is formed between the suspension tube 27 and the head cover 50 so as to have a circumferential shape therebetween. A discharge port 29 is formed. The lower portion of the head cover 50 is a fixed portion 51, and a shaft support portion 51a of the shaft 37 described below is provided therein. The upper portion of the head cover 50 is a movable portion 55 and is configured to move up and down by screwing a drive screw rod 65 attached to a drive means (electric motor) M fixed to the upper frame 60 to the base portion 56. Has been. When the movable portion 55 is lowered to the position indicated by the dotted line, the discharge port 29 is closed.

  Next, the lower gantry 40 is constructed by assembling a plurality of steel materials into a substantially flat and rectangular shape, and mounting a plate-like discharge flow path forming member 41 on the upper surface thereof in a watertight manner. The upper pedestal 60 is also constructed by assembling a plurality of steel materials into a substantially flat and rectangular shape, and attaching a plate-like discharge flow path forming member 61 to the lower surface thereof in a watertight manner. The upper pedestal 60 is installed integrally with the lower gantry 40 on the upper portion of the lower gantry 40 by a plurality of columns 70 at a predetermined distance in parallel with the upper gantry 40. In this embodiment, there are four columns 70, which are installed at the four corners of the rectangular upper frame 60 and the lower frame 40. The space between the upper frame 60 and the lower frame 40 is covered with a flat discharge channel forming member 71 in a watertight manner on its three sides (the front side surface, the back side surface, and the right side surface). Only the left side surface of FIG. That is, in this embodiment, the upper and lower spaces and the periphery (except for the portion that becomes the discharge opening 73) of the space between the upper frame 60 and the lower frame 40 are covered with the discharge flow path forming members 41, 61, 71 in a watertight manner. A discharge flow path 75 is formed for directing the liquid discharged by the vertical shaft pump 10 to the discharge opening 73.

  A pump drive mechanism 80 composed of a prime mover (including a transmission) such as an electric motor or an engine is installed and fixed on the upper frame 60 so as to be integrated with the upper frame 60. The drive shaft 81 of the pump drive mechanism 80 is coupled to a shaft 37 protruding in a watertight manner from the discharge flow path forming plate 61 to the upper part thereof.

  The gantry-integrated pump 1 is carried into the site in a state where its centering and assembly are completed at the factory. FIG. 2 is a diagram showing an example of a method for installing the gantry-integrated pump 1 on site. As shown in the figure, the gantry-integrated pump 1 that has been assembled and centered at the factory is brought into the field and lifted by a crane 400 or the like, and the lower gantry 40 part is placed on the floor above the suction water tank 270 ( It mounts on the installation stand) 275, and it fixes by carrying out civil engineering joining of the upper mount frame 60 and the lower mount frame 40, respectively. At that time, the vertical shaft pump 10 is inserted from the opening 277 provided in the floor 275, and the lower end thereof is submerged in the water in the suction water tank 270.

  In FIG. 2, the civil engineering structure made of concrete or the like in the pump station where the gantry-integrated pump 1 is installed has a discharge water tank 280 and a discharge water channel 285 in addition to the suction water tank 270. When installing and fixing on the floor 275, the discharge opening 73 of the gantry-integrated pump 1 is directly connected to the inlet 285 a of the discharge water channel 285. In other words, according to the gantry-integrated pump 1, the vertical shaft pump 10, the pump drive mechanism 80, etc. are integrated and assembled and centered in the factory, so that they are installed and fixed on the civil engineering structure at the site. Just complete the installation. In other words, the installation work is completed only by the same process as the conventional pump base installation process, and the casing, the pump rotating body, the discharge casing, the mount, and the pump drive mechanism are sequentially assembled and centered on-site as in the past. The installation process in the series of connecting the discharge piping to the discharge casing is unnecessary, and the process can be greatly shortened and the construction cost can be reduced.

  The gantry-integrated pump 1 installed as described above rotates the impeller 35 via the drive shaft 81 and the shaft 37 by driving the pump drive mechanism 80 in FIG. 1, and thereby the suction port 21a. The water sucked in from the circumferential discharge port 29 is discharged in the entire circumferential direction, and is further discharged through a discharge channel 75 formed in the space between the upper frame 60 and the lower frame 40. 73 is discharged from the inlet 285a shown in FIG. 2 to the discharge water tank 280 via the discharge water channel 285.

  On the other hand, when the drive of the pump drive mechanism 80 is stopped, the drive unit M is driven simultaneously with the stop of the pump drive mechanism 80 to lower the movable portion 55 to the dotted line position shown in FIG. The water pumped into the discharge water tank 280 is prevented from flowing back to the suction water tank 270. Thus, the gantry-integrated pump 1 according to this embodiment is integrally provided with a valve mechanism that opens and closes the discharge port 29 by making a part of the head cover 50 movable in the vertical direction. It is not necessary to install a separate stop valve, check valve, or the like on the downstream side of the discharge casing, and this is also preferable because the installation process can be simplified.

  FIG. 3 is a schematic cross-sectional view of a gantry-integrated pump 1-2 according to another embodiment of the present invention. In the gantry-integrated pump 1-2 shown in the figure, matters other than those described below are the same as those in the embodiment shown in FIGS. The difference between the gantry-integrated pump 1-2 and the gantry-integrated pump 1 shown in FIG. 1 is that a pump drive mechanism 80-2 installed on the upper gantry 60 is a transmission (reduction gear) instead of a prime mover. It is only the point that installed. A shaft 85 is pulled out in the horizontal direction from the pump drive mechanism 80-2, and a drive shaft of a prime mover (not shown) is connected to the end of the shaft 85. In other words, in the case of a vertically installed motor, it may be mounted and fixed directly on the upper frame 60 as shown in FIG. 1, but in the case of a horizontal motor, it is mounted on the upper frame 60 as shown in FIG. A reduction gear may be installed and the shaft 85 protruding from the side thereof may be connected to a prime mover installed separately.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. Note that any shape or structure not directly described in the specification and drawings is within the scope of the technical idea of the present invention as long as the effects and advantages of the present invention are achieved. For example, in each of the above-described embodiments, the pump drive mechanisms 80 and 80-2 are installed on the upper frame 60 and integrated to form the frame-integrated pumps 1 and 1-2. And the lower gantry 40 and the upper gantry 60 may be integrated. In some cases, the pump drive mechanisms 80 and 80-2 may be separately provided after the gantry-integrated pumps 1 and 1-2 are installed on site. You may install on top of.

  In the above embodiment, the upper frame 60 and the lower frame 40 are integrated by the support column 70 and the periphery thereof is surrounded by the discharge flow path forming member 71. However, the support channel 70 is omitted and only the discharge flow path forming member 71 is provided. Thus, the upper frame 60 and the lower frame 40 may be integrated. In this case, the discharge flow path forming member 71 is given strength to support the upper frame 60.

  In the case of a structure in which the space between the upper frame 60 and the lower frame 40 is surrounded by a civil structure as shown in FIG. 1, the discharge flow path forming member 71 is omitted, and the space between the upper frame 60 and the lower frame 40 is directly omitted. The discharge flow path 75 toward the discharge opening 73 may be formed by directly surrounding the space with the civil engineering structure in a watertight manner.

  Further, the shape and structure of the vertical pump according to the present invention is not limited to that of the above embodiment, and various modifications are possible. That is, for example, in the above-described embodiment, the suspension tube 27 is a cage type, but it may be simply a cylindrical shape or a curved tube. In the above embodiment, the valve mechanism is provided integrally. However, the valve mechanism may be omitted by installing it separately. Needless to say, the shape and structure of the upper frame and the lower frame can be variously modified.

It is a schematic sectional drawing of the gantry integrated pump 1. FIG. It is a figure which shows an example of the installation method of the gantry integrated pump. It is a schematic sectional drawing of the gantry integrated pump 1-2. It is a figure which shows the example of installation to the pump station of the conventional vertical shaft pump 300.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Stand-integrated pump 10 Vertical shaft pump 20 Casing 21 Suction bell mouth 21a Suction port 25 Discharge bowl 27 Suspension pipe 27a Pump base 29 Discharge port 35 Impeller (pump rotating body)
37 Shaft (Rotating pump)
40 Lower frame 41 Discharge channel forming member 50 Head cover 51 Fixed portion 55 Movable portion 60 Upper frame 61 Discharge channel forming member 65 Drive screw rod 70 Strut 71 Discharge channel forming member 73 Discharge opening 75 Discharge channel 80 Pump drive mechanism 81 Drive shaft M Drive means (electric motor)
270 Suction water tank 275 Floor (mounting table)
277 Opening 280 Discharge water tank 285 Discharge water channel 285a Inlet

Claims (2)

  A vertical pump, a lower frame that is installed on a mounting base in a state in which the vertical pump is suspended, and an upper base that is installed on the lower base and on which a pump driving mechanism that drives the vertical pump is installed. The gantry integrated pump characterized by being integrally coupled.   2. The gantry according to claim 1, wherein the space formed between the upper gantry and the lower gantry is surrounded by a ejection channel forming member to form a liquid ejection channel for discharging the vertical shaft pump. Body pump.

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