JP2006307514A - Pump mounting base and manhole pumping system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump mounting base and a manhole pumping system using it, which enable any number of pump mounting bases to be installed in a juxtaposed manner even in a pit except a manhole from the manhole pumping system, according to need, by both enables the single use of one pump mounting base and enabling the plurality of pump mounting bases to be used in a juxtaposed state. <P>SOLUTION: In the pump mounting base 2 for the manhole pumping system, a cylindrical prewhirl recess 7 for inserting a suction port of a pump, and a liquid inflow passage section 14 for making a liquid flow into the recess 7 are integrally formed; and the passage section 14 is arranged almost in parallel with the center line C of a mounting/demounting device 5 for mounting the pump, so that the liquid from the passage section 14 can flow into the recess 7 in the tangential direction of the inner wall surface of the recess 7. When the pump mounting bases 2 are arranged in such a manner as to be juxtaposed in the manhole 1 in the same direction, the center B of the recess 7 is one-sided by a predetermined dimension D in the direction of the side of the passage part 14 with respect to the center line C of the device 5. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a sewage relay tank, a sewage drain tank, and a pump mounting base used in a manhole of a manhole pump device, and minimizes scum formation due to inflow of organic components such as oil and fat in the manhole. The present invention relates to a pump mount that has been devised so that it can be performed, and a manhole pump device using the pump mount.

  1 to 3 are diagrams showing the configuration of this conventional manhole pump device of this type, FIG. 1 is a longitudinal sectional view showing the overall configuration of the manhole pump device, FIG. 2 is a horizontal sectional view, and FIG. FIG. A pump mount 2 is installed at the bottom of the manhole 1. As shown in FIG. 2, the pump mounting base 2 is formed of fiber strong plastic so as to be installed from the upper end opening 4 of the manhole even after the manhole 1 is completed. . A flat pump mounting attachment / detachment device mounting portion 3 on which the pump mounting attachment / detachment device 5 is mounted is formed at a substantially central portion of each of the divided pump mounting bases 2-1, and the pump mounting attachment / detachment device mounting portion. A cylindrical pre-slewing recess 7 is formed adjacent to the end of 3. Reference numeral 14 denotes a liquid inflow passage for guiding the liquid flowing into the pump mounting base 2 to the pre-turn recess 7.

  Two pump mounting bases 2-1 having the above-described configuration are arranged side by side at the bottom of the manhole 1 to form a pump mounting base 2 having a flat circular shape as a whole. In order to support the load of the pump 9 and the pump attachment / detachment device 5 and to be fixed to the bottom of the manhole 1, a metal mount 6 is provided below the pump attachment / detachment device mounting portion 3, and the lower surface of the pump attachment base 2. Concrete 10 is filled between the bottom wall surface of the manhole 1 and the manhole 1. The pump 9 is installed by suspending the pump 9 with a chain (not shown), and further guiding the pump 9 along the guide pipe 12 with a slide guide 13 that moves the guide pipe 12 up and down. The pump 9 is lowered until it matches the attachment / detachment device 5, and the pump 9 is attached to the pump attachment / detachment device 5. Thereby, the suction inlet 9a of the pump 9 is inserted and arrange | positioned at the pre-turning recessed part 7 of the pump mounting base 2-1. In this way, the two pumps 9 are installed on the pump mounting bases 2-1, 2-1 respectively.

  As described above, the pump mounting base 2 for the conventional manhole pump device is a pump having a circular planar shape as shown in FIG. 2 so that it can be installed from the upper end opening 4 of the manhole 1 even after the manhole 1 is completed. The mounting base 2 was manufactured by dividing it along the line AA. However, in this case, the divided pump mounting bases 2-1 and 2-1 must be used as a set. In this case, for example, there is a problem that it cannot be used when three pump mounting bases are installed and used at the bottom of a large manhole.

  The present invention has been made in view of the above points, and it is possible to use either a single pump mounting base or a plurality of side-by-side pumps in a pit other than a manhole from a manhole pump device. It is another object of the present invention to provide a pump mounting base that can be installed side by side as necessary, and a manhole pump device using the pump mounting base.

  In order to solve the above-mentioned problem, the invention according to claim 1 is formed by integrally forming a cylindrical pre-swivel recess into which a suction port of a pump is inserted and a liquid inflow passage for allowing liquid to flow into the pre-swivel recess. A pump in which the inflow path portion is arranged substantially parallel to the center line of the pump attachment / detachment device, and the liquid from the liquid inflow path portion flows into the pre-swivel recess in the tangential direction of the inner wall surface thereof. When the pump mounting base is arranged in the same direction in the manhole, the center of the pre-rotation recess is located on the side of the liquid inflow path with respect to the center of the mounting / demounting device for pump mounting. It is characterized by being configured so as to be offset by a predetermined dimension in the direction of.

  According to a second aspect of the present invention, in the pump mounting base according to the first aspect, the pump mounting base is formed of a fiber reinforced plastic.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a manhole pump device having a configuration in which a pump mounting attachment / detachment device, a pump mounting base, and a pump are arranged in a manhole. The pump mounting base according to claim 1 or 2 is used as the pump mounting base, and the pump mounting bases are arranged in the same direction in a manhole.

  According to the first and second aspects of the present invention, when the pump mounting bases are arranged in the same direction in the manhole, the direction of the liquid inflow path portion side with respect to the center of the pre-turning concave portion with respect to the center of the pump mounting / detaching device Therefore, the same pump mounting bases can be arranged in the same direction, and the installation interval of the pumps can be set as narrow as possible. In addition, since the center of the pre-revolution recess into which the pump suction port is inserted is offset by a predetermined dimension in the direction of the inflow passage with respect to the center of the pump attachment / detachment device, a pre-swirl flow of liquid is generated in the pre-revolution recess. The effect that it becomes easy and scum formation by inflow of organic components, such as fats and oils, can be anticipated.

  According to invention of Claim 3, since the pump mounting base of Claim 1 or 2 was arranged side by side in the same direction in a manhole, the manhole pump apparatus which can be installed by making the installation space | interval of a pump as narrow as possible Can be provided. In addition, a pre-swirl flow of the liquid is easily generated in the pre-swivel recess, and scum formation due to the inflow of organic components is reduced.

  Embodiments of the present invention will be described below with reference to the drawings. 4 and 5 are views showing a configuration of a manhole bottom portion of a manhole pump apparatus using a pump mount according to the present invention, FIG. 4 is a plan sectional view, and FIG. 5 is a longitudinal sectional view. 4 and 5, the same reference numerals as those in FIGS. 1 to 3 indicate the same or corresponding parts. The pump mount 2 is made of fiber reinforced plastic. As shown in FIG. 4, a pump mounting attachment / detachment device mounting portion 3 having a flat planar shape as a whole and a flat central portion is provided, and the pump mounting base 2 of the pump mounting attachment / detachment device mounting portion 3 is provided. A pre-turn recess 7 into which a pump suction port is inserted is provided adjacent to the longitudinal end.

  Moreover, it adjoins the transversal direction edge part of the pump mounting base 2 of the pump mounting attachment apparatus mounting part 3, ie, substantially parallel to the center line C of the pump mounting attachment apparatus 5 (refer FIG.1 and FIG.3). A liquid inflow path portion 14 that guides the liquid that has flowed onto the pump mount 2 to the pre-turning recess 7 is provided. The liquid flowing from the liquid inflow path portion 14 into the pre-swirl recess 7 flows in the tangential direction of the inner wall surface of the pre-swivel recess 7.

  As shown in FIG. 4, the pump mounting base 2 having the above-described configuration is arranged in the same direction in the manhole 1, that is, the longitudinal direction of each pump mounting base 2 is made coincident with the direction of the center line C of the pump mounting / detaching device 5. When arranged side by side in a direction orthogonal to the mounting base 2, the center B of the pre-turn recess 7 is a predetermined dimension in the direction toward the inflow passage 14 from the center line of the pump mounting attachment / detachment device 5 (see FIGS. 1 and 3). The pump mounting base 2 is configured so that only D is offset. In the above example, the pump mount 2 is made of fiber reinforced plastic, but other plastics or other materials may be used as long as the required strength is satisfied.

  In order to support the load of the pump 9 and the pump mounting / removal device 5 with the pump mounting base 2 (see FIG. 1) and to fix the pump mounting base 2 to the bottom of the manhole 1, as shown in FIG. A metal mount 6 is provided at the bottom of the mounting portion 3, and concrete 10 is filled between the lower surface of the pump mounting base 2 and the bottom wall surface of the manhole 1. The pump attachment / detachment device 5 is placed on the pump attachment / detachment device mounting portion 3 of the pump mount 2 and the pump 9 is attached to the pump attachment / detachment device 5 in the prior art shown in FIGS. It is exactly the same as the example.

  When the pump mounting base 2 is arranged in the same direction in the manhole 1 as described above, as shown in FIG. 4, the center B of the pre-turn recess 7 is in relation to the center line C of the pump mounting attachment / detachment device 5. By configuring so as to be offset by a predetermined dimension D in the direction of the liquid inflow passage side 14, the same pump mounting base 2 can be arranged in the same direction, and the installation interval of the pumps can be set as narrow as possible. Further, since the center of the pre-turn recess 7 into which the pump suction port is inserted is offset by a predetermined dimension D in the direction toward the inflow passage section with respect to the center line C of the pump attachment / detachment device 5, the pre-turn recess 7 It is easy to generate a pre-swirl flow of liquid, and it can be expected that scum formation due to the inflow of organic components such as fats and oils is reduced.

  Further, by configuring the pump mounting base 2 as described above, a single pump mounting base 2 can be used alone or a plurality of pump mounting bases can be used side by side, and it is also necessary for a pit other than a manhole from a manhole pump device. Any number can be installed side by side.

  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.

It is a longitudinal cross-sectional view which shows the whole structure of the conventional manhole pump apparatus. It is a horizontal sectional view of a conventional manhole pump device. It is a lower part longitudinal cross-sectional view of the conventional manhole pump apparatus. It is a plane sectional view showing composition of a manhole bottom part of a manhole pump device concerning the present invention. It is a longitudinal cross-sectional view which shows the structure of the manhole bottom part of the manhole pump apparatus which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Manhole 2 Pump mounting base 3 Pump mounting attachment / detachment apparatus mounting part 4 Upper end opening part 5 Pump mounting attachment / detachment apparatus 6 Base 7 Pre-rotation recessed part 9 Pump 10 Concrete 12 Guide pipe 13 Slide guide 14 Liquid inflow path part

Claims (3)

A cylindrical pre-swivel recess for inserting the suction port of the pump and a liquid inflow passage for allowing the liquid to flow into the pre-swivel recess are integrally formed, and the liquid inflow passage is relative to the center line of the pump mounting / removal device. A pump mounting base for a pump device that is arranged substantially in parallel and configured so that the liquid from the liquid inflow path portion flows into the pre-swivel recess in a tangential direction of the inner wall surface thereof;
When the pump mounting base is arranged in the same direction in the manhole, the center of the pre-turn recess is configured to be offset by a predetermined dimension in the direction of the liquid inflow passage with respect to the center of the pump mounting attachment / detachment device. A pump mount characterized by that. The pump mount according to claim 1,
The pump mounting base, wherein the pump mounting base is made of fiber reinforced plastic. In the manhole pump device having a configuration in which a pump mounting attachment / detachment device, a pump mounting base, and a pump are arranged in a manhole,
3. A manhole pump device, wherein the pump mount according to claim 1 or 2 is used as the pump mount, and the pump mounts are arranged in the same direction in a manhole.

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