JP2018165497A - pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pump which does not require a separate component for adjusting an attitude of a lifting pipe with respect to an installation floor, and which has favorable workability regarding adjustment.SOLUTION: A pump 10 includes: a lifting pipe 13 protruding downward from a mounting hole 3 formed on an installation floor 2; a discharge pipe 14 connected to an upper end of the lifting pipe 13, and arranged on the installation floor 2; a base plate 27 fixed on an outer peripheral part of the mounting hole 3 of the installation floor 2, and having a first slide contact part 28; an installation plate 32 provided at a lower part of the discharge pipe 14 or at an upper part of the lifting pipe 13, and having a second slide contact part 33 movably arranged on the first slide contact part 28; and a fixing member 36 for fixing the installation plate 32 with respect to the base plate 27 so as not to move.SELECTED DRAWING: Figure 1A

Description

  The present invention relates to a pump.

  The pump equipment disclosed in Patent Literature 1 includes a base disposed on the inner periphery of a mounting hole formed in the installation floor of the drainage station, and a pump casing disposed on the base. In this pump facility, when the installation floor is tilted, the posture of the pump is corrected by arranging a taper liner, a spacer or the like between the base and the pump casing.

  The pump disclosed in Patent Document 2 includes a pumping pipe having a first sliding contact portion formed at the upper end and a discharge pipe having a second sliding contact portion formed at the lower end. The first sliding contact portion is composed of one of a spherical concave portion and a spherical convex portion, and the second sliding contact portion is composed of the other of the spherical concave portion and the spherical convex portion. In this pump, when the installation floor of the drainage station tilts due to an earthquake or the like, the misalignment of the axis of the rotary shaft is corrected by adjusting the posture of the discharge pipe with respect to the pumping pipe.

Japanese Patent No. 4105511 Japanese Patent Laying-Open No. 2015-105569

  In the pump facility of Patent Document 1, in order to correct the posture of the pump casing, it is necessary to prepare a plurality of types of taper liners and spacers having different thicknesses according to the inclination angle of the installation floor. Moreover, since it is necessary to pull up the pump casing using a large machine such as a crane and arrange the taper liner and spacer, the workability regarding the adjustment of the posture is poor.

  In the pump of Patent Document 2, the posture of the discharge pipe with respect to the pumping pipe can be adjusted, but the posture of the pumping pipe with respect to the inclined installation floor cannot be adjusted.

  It is an object of the present invention to provide a pump that does not require a separate part for adjusting the posture of the pumped pipe with respect to the installation floor and that has good workability regarding the adjustment.

  The present invention provides a pumping pipe projecting downward from a mounting hole formed in the installation floor, a discharge pipe connected to an upper end of the pumping pipe and piped on the installation floor, and the mounting hole of the installation floor. A base plate that is fixed to the outer peripheral portion and has a first sliding contact portion that is one of a spherical concave portion and a spherical convex portion, and is provided at the lower portion of the discharge pipe or the upper portion of the pumping pipe, An installation plate having a second sliding contact portion that is movably disposed on the first sliding contact portion, and is configured to move the installation plate relative to the base plate. A pump comprising a fixing member for possible fixing is provided.

  In this pump, when the installation floor of the drainage station is inclined for some reason, the pumping water including the discharge pipe is adjusted by releasing the fixation by the fixing member and adjusting the position of the installation plate (discharge pipe) relative to the base plate (installation floor). The posture of the tube can be adjusted. In this adjustment operation, the second sliding contact portion of the installation plate is moved laterally with respect to the first sliding contact portion of the base plate, and then the second sliding contact portion is fixed to the first sliding contact portion by the fixing member. Just do it. That is, it is not necessary to prepare separate parts such as a taper liner and a spacer, and a large-scale construction using a large machine such as a crane is not necessary. Therefore, the workability of adjusting the posture of the pump can be improved.

  The hardness of the first sliding contact portion is different from the hardness of the second sliding contact portion. According to this aspect, the frictional resistance between the first sliding contact portion and the second sliding contact portion can be reduced, and the slidability can be improved. Therefore, the workability | operativity which adjusts the attitude | position of a pumping pipe with respect to an installation floor can be improved.

  An injection hole that is formed in the base plate or the installation plate and communicates with a gap between the first sliding contact portion and the second sliding contact portion, and is connected to the injection hole and supplies liquid or gas to the gap. And a pressurizing device. According to this aspect, the second sliding contact portion can be lifted with respect to the first sliding contact portion by supplying liquid or gas to the gap and applying pressure. Therefore, the frictional resistance between the first sliding contact portion and the second sliding contact portion can be reduced, and the slidability can be improved. As a result, the workability of adjusting the posture of the pumped pipe with respect to the installation floor can be improved.

  Between the first slidable contact portion and the second slidable contact portion, an annular first seal member and an annular second seal having a diameter larger than that of the first seal member with the axis of the pumping pipe as a center. The injection hole is formed between the first seal member and the second seal member. According to this aspect, it is possible to prevent the liquid or gas supplied to the gap from leaking, and to reliably lift the second sliding contact portion with respect to the first sliding contact portion.

  A rotary shaft disposed in the pumping pipe from the discharge pipe, a drive device for rotating the rotary shaft attached to a portion of the rotary shaft that protrudes outward from the discharge pipe, and provided in the discharge pipe A mounting base for mounting the driving device; and a vibration isolating device disposed between the mounting base and the second mounting floor formed above the mounting floor. According to this aspect, it is possible to suppress the influence on the second installation floor due to vibration during driving of the drive device.

  The vibration isolator is made of an elastic-plastic material. According to this aspect, by adjusting the posture of the pumping pipe with respect to the installation floor, the posture of the driving device including the mounting base can be adjusted together. It can be improved.

  In the pump of the present invention, it is not necessary to prepare a separate part for adjusting the posture of the pumped pipe with respect to the installation floor, and workability relating to adjustment can be improved.

Sectional drawing which shows the pump of 1st Embodiment of this invention. Sectional drawing which shows the state in which the installation floor inclined from the state of FIG. 1A. Sectional drawing which shows the state which adjusted the attitude | position of the pump from the state of FIG. 1B. FIG. 1B is a cross-sectional view showing the posture adjustment mechanism in the state of FIG. 1A. FIG. 1C is a cross-sectional view showing the posture adjustment mechanism in the state of FIG. 1C. The disassembled perspective view of an attitude | position adjustment mechanism. Sectional drawing which shows the attitude | position adjustment mechanism of 2nd Embodiment. Sectional drawing which shows the attitude | position adjustment mechanism of 3rd Embodiment. Sectional drawing which shows the pump of 4th Embodiment. Sectional drawing which shows the state which adjusted the attitude | position of the pump of 4th Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
1A to 1C show a vertical shaft pump 10 according to an embodiment of the present invention. The vertical shaft pump 10 discharges liquid such as rainwater flowing into the suction water tank 1 of the drainage station to the downstream side, and is installed on the pump floor 2 covering the upper side of the suction water tank 1. The vertical shaft pump 10 includes a pump casing 12, an impeller 20, a rotating shaft 21, and a drive motor 22. Further, the pump casing 12 is installed on the pump floor 2 via the posture adjusting mechanism 25. In the initial state, as shown in FIG. 1A, when the horizontal pump floor 2 tilts as shown in FIG. 1B for some reason, the attitude adjustment mechanism 25 causes the pump casing 12 to tilt relative to the pump floor 2 as shown in FIG. 1C. Adjust (posture).

  As shown in FIG. 1A, the pump casing 12 is inserted into the mounting hole 3 formed in the pump floor 2 from the upper side and fixed to the pump floor 2, and includes a pumping pipe 13 and a discharge pipe 14. . The pumping pipe 13 is a straight pipe that protrudes downward in the vertical direction from the mounting hole 3. The discharge pipe 14 includes a discharge elbow 15 made of a bent pipe connected to the upper end of the pumped pipe 13 and a water supply pipe (not shown) made of a straight pipe piped on the pump floor 2. A flexible tube (not shown) that is deformable in the axial direction and the radial direction is interposed between the discharge elbow 15 and the water supply pipe.

  A flange portion 16 for fixing the pump casing 12 including the pumping pipe 13 to the pump floor 2 is integrally provided on the lower end (connected to the pumping pipe 13) of the discharge elbow 15. The flange portion 16 protrudes radially outward from the outer periphery of the discharge elbow 15 and has an outer diameter larger than the inner diameter of the mounting hole 3. A mounting base 17 for mounting the drive motor 22 is provided on the upper side of the flange portion 16.

  The impeller 20 is disposed at the lower inner side of the pumping pipe 13 and is fixed to the lower end of the rotating shaft 21.

  The rotating shaft 21 passes through the discharge elbow 15 and is disposed along the axis A in the pumped-up pipe 13. The upper end of the rotating shaft 21 protrudes outward from the discharge elbow 15. The portion of the discharge elbow 15 through which the rotary shaft 21 passes is sealed in a liquid-tight manner by the shaft seal device 18.

  The drive motor 22 is an electric drive device for rotating the rotary shaft 21, and is attached to the mounting base 17 of the discharge elbow 15. The output shaft of the drive motor 22 is connected to the upper end of the rotating shaft 21 protruding from the pump casing 12. When the rotating shaft 21 is rotated by driving the drive motor 22, the impeller 20 rotates integrally with the rotating shaft 21, whereby the liquid in the suction water tank 1 is discharged downstream through the pump casing 12.

(Details of posture adjustment mechanism)
As shown in FIGS. 1A, 2A, and 3, the posture adjustment mechanism 25 is for adjusting the posture of the pump casing 12 with respect to the pump floor 2, and includes a base plate 27, a mounting plate 32, and a fixing member 36. . The attitude adjustment mechanism 25 moves the installation plate 32 in the horizontal (horizontal) direction with respect to the base plate 27 and moves the installation plate 32 in the vertical (vertical) direction with respect to the base plate 27. And a vertical movement member 45.

  The base plate 27 is an annular member fixed to the upper outer peripheral portion of the mounting hole 3 of the pump floor 2. The inner diameter of the base plate 27 is larger than the outer diameters of the pumping pipe 13 and the discharge elbow 15, and the outer diameter of the base plate 27 is larger than the inner diameter of the mounting hole 3. On the upper surface of the base plate 27, there is provided a first sliding contact portion 28 formed of a spherical concave portion that is depressed downward with a predetermined curvature. On the upper surface of the first sliding contact portion 28, a concentric concave groove 29 centering on the same position as the center of the base plate 27 (the axis A of the pumping pipe 13) is provided. A sealing member 30 for sealing between the upper surface of the base plate 27 and the lower surface of the installation plate 32 is disposed in the concave groove 29.

  The installation plate 32 is an annular member fixed to the lower portion of the flange portion 16 of the discharge elbow 15. The inner diameter of the installation plate 32 is larger than the outer diameter of the pumping pipe 13 and the discharge elbow 15, and the outer diameter of the installation plate 32 is larger than the inner diameter of the mounting hole 3. On the lower surface of the installation plate 32, a second sliding contact portion 33 is provided which is a spherical convex portion protruding downward with the same curvature as the first sliding contact portion 28. The second slidable contact portion 33 is disposed on the first slidable contact portion 28 of the base plate 27 so as to be movable (slidable). By moving the second slidable contact portion 33 on the first slidable contact portion 28, the axis of the installation plate 32 with respect to the axis of the base plate 27 (depending on the inclination of the pump floor 2) (same as the axis A of the pumping pipe 13). Can be adjusted.

  The hardness of the first sliding contact portion 28 and the hardness of the second sliding contact portion 33 are different. Specifically, the base plate 27 and the installation plate 32 are formed of the same cast iron. A surface layer 34 having a friction coefficient different from that of the surface of the first sliding contact portion 28 is applied to the surface of the second sliding contact portion 33 facing the first sliding contact portion 28 by applying hard chrome plating or fluororesin coating. Is formed. The second slidable contact portion 33 subjected to hard chrome plating has a higher hardness and a lower friction coefficient than the first slidable contact portion 28. The second sliding contact portion 33 to which the fluororesin coating is applied has lower hardness and friction coefficient than the first sliding contact portion 28. That is, the hardness of the first sliding contact portion 28 and the hardness of the second sliding contact portion 33 are different from each other, and the friction coefficient between the first sliding contact portion 28 and the second sliding contact portion 33 is lowered. The slidability of the second sliding contact portion 33 with respect to the sliding contact portion 28 is improved.

  The fixing member 36 fixes the installation plate 32 (second sliding contact portion 33) so as not to move with respect to the base plate 27 (first sliding contact portion 28), and is constituted by a bolt. The first sliding contact portion 28 is provided with a plurality of bolting portions 37 for fastening the fixing member 36 at intervals in the circumferential direction. The second sliding contact portion 33 is provided with a loose fitting hole 38 located on the same axis as the bolting portion 37 at the initial position (state of FIG. 1A) where the installation plate 32 and the base plate 27 are arranged on the same axis. ing. The diameter of the loose fitting hole 38 is larger than the diameter of the bolting portion 37. A washer 39 is disposed on the upper surface of the loose fitting hole 38, and the fixing member 36 is fastened to the bolting portion 37 through the washer 39 and the loose fitting hole 38. Thereby, even if the fixing member 36 is in a fixed position, the installation plate 32 can be moved laterally with respect to the base plate 27 within the range of the loose fitting holes 38. Further, the installation plate 32 can be fixed to the base plate 27 without rattling with the installation plate 32 moved to a desired position.

  The lateral movement member 41 is a jack bolt for moving the installation plate 32 in the horizontal (diameter) direction with respect to the base plate 27, and a plurality of lateral movement members 41 are arranged in the circumferential direction with respect to the base plate 27. An annular frame 42 is provided on the outer peripheral portion of the first sliding contact portion 28 of the base plate 27, and a plurality of bolt holes 43 are provided in the annular frame 42 at intervals in the circumferential direction. All the lateral movement members 41 are loosened outward and the predetermined lateral movement members 41 are tightened, so that the outer peripheral surface of the installation plate 32 is pressed by the distal ends of the lateral movement members 41. Thereby, the installation plate 32 can be moved in the horizontal direction with respect to the base plate 27. Further, the horizontal movement of the installation plate 32 relative to the base plate 27 is restricted by bringing the tips of all the lateral movement members 41 into contact with the outer peripheral surface of the installation plate 32 in a state where the installation plate 32 is moved to the desired position. it can.

  As shown in FIG. 3, the longitudinal movement member 45 is a jack bolt for moving the installation plate 32 upward in the vertical (vertical) direction with respect to the base plate 27, and a plurality of longitudinal movement members 45 are arranged in the circumferential direction with respect to the installation plate 32. Has been. A plurality of bolt holes 46 penetrating along the axial direction are provided in the outer peripheral portion of the installation plate 32 at intervals in the circumferential direction. The vertical movement member 45 is fastened to the bolt hole 46 and the upper surface of the base plate 27 is pressed by the tip of the vertical movement member 45, whereby the installation plate 32 is moved (separated) in the vertical direction with respect to the base plate 27. By operating the lateral movement member 41 in this state, the installation plate 32 can be easily moved with respect to the base plate 27.

(Attitude adjustment operation)
As shown in FIG. 1A, when a drainage station is newly installed, the pump floor 2 is set to extend in the horizontal direction. Therefore, the axis of the base plate 27 fixed to the pump floor 2 coincides with the vertical reference line L passing through the center of the mounting hole 3. When the pumping pipe 13 is inserted into the mounting hole 3 of the pump floor 2, the second sliding contact portion 33 of the installation plate 32 is placed on the first sliding contact portion 28 of the base plate 27. And the position of the 2nd sliding contact part 33 of the installation plate 32 with respect to the 1st sliding contact part 28 of the baseplate 27 is adjusted by clamping | tightening of the lateral movement member 41, and the axis A of the pumping pipe 13 is made to correspond with the reference line L. In this state, the mounting plate 32 is fixed to the base plate 27 so as not to move by the fixing member 36.

  As shown in FIG. 1B, when an unexpected load occurs in the drainage station due to an earthquake or the like, the pump floor 2 may be inclined with respect to the horizontal direction (inclination angle S1). In this case, since the pump casing 12 fixed to the pump floor 2 is also tilted together, the axis A of the pumping pipe 13 does not coincide with the reference line L. When the vertical pump 10 is driven in this state, the impeller 20 interferes with the inner peripheral surface of the pumping pipe 13 or an overload is applied to the bearing of the rotary shaft 21 and the shaft seal device 18. Cause.

  When adjusting the posture of the pump casing 12 with respect to the inclined pump floor 2, first, the fixing member 36 and the lateral movement member 41 of the posture adjustment mechanism 25 are loosened. Next, by tightening the longitudinally moving member 45, the tip of the longitudinally moving member 45 is brought into contact with the base plate 27, and the attached first sliding contact portion 28 and second sliding contact portion 33 are separated.

  Next, the longitudinally moving member 45 located on the inclined lower side of the installation plate 32 is tightened and adjusted so that the axis A of the pumping pipe 13 extends in the vertical direction. When the adjustment in the vertical direction is completed, the lateral movement member 41 at a predetermined position is tightened, and the installation plate 32 is moved in the horizontal direction with respect to the base plate 27, and as shown in FIG. Match line L. When the adjustment in the horizontal direction is completed, the installation plate 32 is fixed to the base plate 27 so as not to move by tightening the remaining lateral movement member 41 and the fixing member 36 as shown in FIG. 2B.

  The adjustment of the pumping pipe 13 can be performed only by the lateral movement member 41. That is, the lateral movement member 41 at a predetermined position is tightened, and the installation plate 32 is moved in the horizontal direction with respect to the base plate 27. As a result, the second sliding contact portion 33 moves with respect to the first sliding contact portion 28, whereby the installation plate 32 rotates with respect to the base plate 27. As a result, the pumping pipe 13 swings with respect to the pump floor 2 so that the axis A of the pumping pipe 13 can coincide with the reference line L as shown in FIG. 1C.

  Thus, when the pump floor 2 is inclined, the posture of the pump casing 12 can be adjusted by the posture adjusting mechanism 25 so that the axis A of the pumped pipe 13 coincides with the reference line L. Therefore, in the vertical pump 10 after adjustment, the impeller 20 does not interfere with the inner peripheral surface of the pumping pipe 13 due to driving, and the bearing of the rotary shaft 21 and the shaft seal device 18 are not overloaded. Similarly, liquid can be discharged.

  In the adjustment work by the attitude adjustment mechanism 25, it is not necessary to prepare separate parts such as a taper liner and a spacer. In addition, large-scale construction using a large machine such as a crane is unnecessary. Furthermore, since the postures of the water pump 13 and the discharge elbow 15 can be adjusted integrally, the centering (adjustment) of the rotating shaft 21 is not necessary. Therefore, the workability of adjusting the posture of the pump casing 12 with respect to the pump floor 2 can be improved.

  Since the hardness of the first sliding contact portion 28 and the hardness of the second sliding contact portion 33 are different, the frictional resistance between the first sliding contact portion 28 and the second sliding contact portion 33 can be reduced, and the slidability can be improved. It can be improved. Therefore, the workability of adjusting the posture of the pump casing 12 with respect to the pump floor 2 can be further improved.

(Second Embodiment)
FIG. 4 shows an attitude adjustment mechanism 25 of the vertical pump according to the second embodiment. In this posture adjusting mechanism 25, a first sliding contact portion 28 including a spherical convex portion protruding upward is provided on the base plate 27, and a second sliding contact portion 33 including a spherical concave portion recessed upward is provided on the installation plate 32. . Further, the surface layer 34 for varying the hardness is formed on the surface of the first sliding contact portion 28 that faces the second sliding contact portion 33. In the second embodiment, it is possible to obtain the same operation and effect as the first embodiment.

(Third embodiment)
FIG. 5 shows an attitude adjustment mechanism 25 of the vertical pump according to the third embodiment. In this attitude adjustment mechanism 25, the workability of adjusting the position of the installation plate 32 with respect to the base plate 27 is improved by causing the pressure device 50 to lift the second sliding contact portion 33 relative to the first sliding contact portion 28. The same configurations as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The pressurizing device 50 is configured by a pump capable of supplying a liquid (for example, oil) or a gas (for example, air). The pressurizing device 50 includes a connecting pipe 51 for supplying a liquid or gas to the gap 53 between the first sliding contact portion 28 and the second sliding contact portion 33.

  The installation plate 32 is provided with an injection hole 54 that communicates with the gap 53 between the first sliding contact portion 28 and the second sliding contact portion 33. In the injection hole 54 of the present embodiment, a loose fitting hole 38 for inserting the fixing member 36 is used. A thread groove 55 for connecting the connection pipe 51 is formed on the inner peripheral surface of the injection hole 54. The injection hole 54 may be provided toward the base plate 27 and a communication hole communicating with the injection hole 54 may be provided in the pump floor 2.

  In addition to the concave groove (first concave groove) 29, the base plate 27 is provided with a concave groove (second concave groove) 57 having a larger diameter than the concave groove 29, and a seal member (second seal) is provided in the concave groove 57. Member) 58 is disposed. The seal member 30 and the seal member 58 are disposed on the base plate 27 such that the seal member (first seal member) 30 is located radially inside the injection hole 54 and the seal member 58 is located radially outside the injection hole 54. It arrange | positions concentrically centering on an axis line (axis A of the pumping pipe 13).

  When adjusting the position of the installation plate 32 with respect to the base plate 27, the fixing member 36 is removed, and the pressure device 50 is driven in a state where all the lateral movement members 41 are loosened. Thereby, since the liquid or gas is supplied to the gap 53 at a predetermined pressure, the second sliding contact portion 33 is lifted with respect to the first sliding contact portion 28. In this state, similarly to the first embodiment, the position of the installation plate 32 with respect to the base plate 27 is adjusted by the lateral movement member 41 and the longitudinal movement member, and the axis A of the pumping pipe 13 is made to coincide with the reference line L. When the position adjustment is completed, the pressure device 50 is stopped and the fixing member 36 and the lateral movement member 41 are tightened to fix the installation plate 32 to the base plate 27.

  In this posture adjusting mechanism 25, since the sealing members 30 and 58 are disposed on both sides of the injection hole 54, the liquid or gas supplied to the gap 53 by the pressurizing device 50 is prevented from leaking, and the first sliding contact portion 28. In contrast, the second sliding contact portion 33 can be reliably lifted. Further, the liquid or gas supplied to the gap 53 can reduce the frictional resistance between the first sliding contact portion 28 and the second sliding contact portion 33, and can improve the slidability. Therefore, the workability of adjusting the posture of the pump casing 12 with respect to the pump floor 2 can be improved.

(Fourth embodiment)
6A and 6B show a vertical shaft pump 10 according to a fourth embodiment. In this vertical shaft pump 10, the load applied to the pump floor 2 is reduced by arranging the drive motor 22 on the motor floor 4 different from the pump floor 2.

  The drainage station according to the fourth embodiment has a two-floor structure in which the upper part of the pump floor (first installation floor) 2 is covered with a motor floor (second installation floor) 4 extending in the horizontal direction. The motor floor 4 is formed with an insertion hole 5 having a diameter larger than the plan view shape of the mounting base 17 of the drive motor 22. The axis of the insertion hole 5 and the axis of the mounting hole 3 of the pump floor 2 coincide with each other.

  The mounting base 17 is formed at an overall height where the upper portion passes through the insertion hole 5 and is positioned on the motor floor 4. A drive motor 22 is attached to the upper end of the mounting base 17. A support plate 60 protruding from the motor floor 4 is provided at the upper end of the mounting base 17. The support plate 60 is an annular member having an outer diameter larger than the inner diameter of the insertion hole 5.

  Between the support plate 60 and the motor floor 4, a vibration isolator 61 is arranged to suppress the influence on the motor floor 4 due to vibrations when the drive motor 22 is driven. For the vibration isolator 61, an anti-vibration rubber made of an elastic-plastic material is used.

  Elasto-plastic vibration-proof rubber is elastically deformed when a load less than a predetermined load is applied, and plastically deforms when a load greater than a predetermined load is applied. That is, when the vertical pump 10 is driven, the vibration isolator 61 elastically expands and contracts due to the vibration of the drive motor 22 (load less than a predetermined load). On the other hand, the vibration isolator 61 is plastically deformed when a load greater than a load determined by an earthquake or the like is applied.

  As shown in FIG. 6B, when an unexpected load is generated in the drainage station due to an earthquake or the like, the pump floor 2 is inclined at an inclination angle S1 with respect to the horizontal direction, and the motor floor 4 is inclined at an inclination angle S2 with respect to the horizontal direction. . When the vibration isolator 61 does not have plasticity, a load that causes bending of the rotating shaft 21 is applied by the floors 2 and 4 having different inclination angles S1 and S2. However, since the vibration isolator 61 of this embodiment has elasto-plasticity, only the own weight and the load of the impeller 20 act on the rotating shaft 21.

  When adjusting the posture of the pump casing 12, the position of the installation plate 32 with respect to the base plate 27 is adjusted as in the first embodiment. Thereby, the axis A of the pump casing 12 including the mount 17 and the drive motor 22 is adjusted so as to coincide with the reference line L in the vertical direction. By this adjustment, the distance between the support plate 60 and the motor floor 4 varies depending on the circumferential portion, but this distance difference is compensated by the vibration isolator 61.

  Thus, in the vertical shaft pump 10 of 4th Embodiment, since the pump casing 12 is installed in the pump floor 2 and the drive motor 22 is installed in the motor floor 4, the load added to the pump floor 2 can be reduced. Even in a two-floor drainage station, the posture of the drive motor 22 including the mounting base 17 can be adjusted together simply by adjusting the posture of the pump casing 12 with respect to the pump floor 2. It can be improved.

  Note that the vertical pump of the present invention is not limited to the configuration of the tenth embodiment, and various modifications can be made.

  For example, the installation plate 32 arranged on the base plate 27 may be provided on the upper portion of the pumping pipe 13.

  The surface layer 34 is provided on one of the first sliding contact portion 28 and the second sliding contact portion 33 so that the hardness of the first sliding contact portion 28 and the second sliding contact portion 33 is different. You may form the plate 32 with the forming material from which hardness differs. Moreover, you may apply | coat the grease for lubrication between the 1st sliding contact part 28 and the 2nd sliding contact part 33 of the same hardness.

  In the third embodiment, since the friction resistance between the first sliding contact portion 28 and the second sliding contact portion 33 can be reduced by the pressurizing device 50, the surface layer 34 may not be provided.

  In the fourth embodiment, the overall height of the mounting base 17 is made lower than that of the motor floor 4, and the plan view shape of the mounting base 17 is made larger than the insertion hole 5 of the motor floor 4. An anti-vibration device 61 may be disposed between the lower surface of the first and second surfaces. Further, the posture adjustment mechanism 25 of the third embodiment may be used in the fourth embodiment.

  In the posture adjusting mechanism 25 of the third and fourth embodiments, as in the second embodiment, the base plate 27 is provided with the first sliding contact portion 28 formed of a spherical convex portion, and the installation plate 32 is formed of a spherical concave portion. Two sliding contact portions 33 may be provided.

DESCRIPTION OF SYMBOLS 1 ... Suction water tank 2 ... Pump floor 3 ... Mounting hole 4 ... Motor floor 5 ... Insertion hole 10 ... Vertical shaft pump (pump)
DESCRIPTION OF SYMBOLS 12 ... Pump casing 13 ... Pumping pipe 14 ... Discharge pipe 15 ... Discharge elbow 16 ... Flange part 17 ... Mounting stand 18 ... Shaft seal device 20 ... Impeller 21 ... Rotating shaft 22 ... Drive motor 25 ... Attitude adjustment mechanism 27 ... Base plate 28 ... 1st sliding contact part 29 ... Groove (first groove)
30 ... Seal member (first seal member)
32 ... Installation plate 33 ... 2nd sliding contact part 34 ... Surface layer 36 ... Fixing member 37 ... Bolt stop part 38 ... Free fitting hole 39 ... Washer 41 ... Lateral movement member 42 ... Ring frame 43 ... Bolt hole 45 ... Vertical movement member 46 ... Bolt hole 50 ... Pressurizing device 51 ... Connecting pipe 53 ... Gaps 54 ... Injection hole 55 ... Screw groove 57 ... Concave groove (second concave groove)
58 ... Sealing member (second sealing member)
60 ... support plate 61 ... vibration isolator

The present invention relates to a pumping pipe projecting downward from a mounting hole formed in the installation floor, a discharge pipe connected to the upper end of the pumping pipe and piped on the installation floor, and the installation floor. And a posture adjusting mechanism for adjusting the posture of the discharge pipe, the posture adjusting mechanism being fixed to the outer peripheral portion of the mounting hole of the installation floor, A base plate having a first sliding contact portion made of either one of the spherical convex portions, and the other of the spherical concave portion and the spherical convex portion provided at the lower part of the discharge pipe or the upper part of the pumping pipe. And a mounting plate having a second sliding contact portion movably disposed on the first sliding contact portion, and a fixing member for fixing the mounting plate to the base plate so as not to move. Provide a pump.

Claims (6)

A pumping pipe protruding downward from a mounting hole formed in the installation floor;
A discharge pipe connected to the upper end of the pumping pipe and piped on the installation floor;
A base plate that is fixed to the outer peripheral portion of the mounting hole of the installation floor and has a first sliding contact portion formed of one of a spherical concave portion and a spherical convex portion;
A second sliding contact which is provided at the lower part of the discharge pipe or the upper part of the pumping pipe and which is composed of one of a spherical concave part and a spherical convex part and is movably disposed on the first sliding contact part. A mounting plate having a portion;
A fixing member for fixing the installation plate to the base plate so as not to move.   The pump according to claim 1, wherein the hardness of the first sliding contact portion and the hardness of the second sliding contact portion are different. An injection hole formed in the base plate or the installation plate and communicating with a gap between the first sliding contact portion and the second sliding contact portion;
The pump according to claim 1, further comprising: a pressure device connected to the injection hole and configured to supply liquid or gas to the gap. Between the first slidable contact portion and the second slidable contact portion, an annular first seal member and an annular second seal having a diameter larger than that of the first seal member with the axis of the pumping pipe as a center. Members are arranged,
The pump according to claim 3, wherein the injection hole is formed between the first seal member and the second seal member. A rotating shaft arranged in the pumping pipe from the discharge pipe;
A drive unit attached to a portion of the rotating shaft that protrudes outward from the discharge pipe, and for rotating the rotating shaft;
A mounting base provided on the discharge pipe for mounting the driving device;
The pump according to any one of claims 1 to 4, further comprising: a second installation floor formed above the installation floor; and a vibration isolator disposed between the mounting bases.   The pump according to claim 5, wherein the vibration isolator is made of an elastic-plastic material.

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