WO1999030039A1 - Pompe centrifuge - Google Patents

Pompe centrifuge Download PDF

Info

Publication number
WO1999030039A1
WO1999030039A1 PCT/JP1997/004485 JP9704485W WO9930039A1 WO 1999030039 A1 WO1999030039 A1 WO 1999030039A1 JP 9704485 W JP9704485 W JP 9704485W WO 9930039 A1 WO9930039 A1 WO 9930039A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
impeller
pump
bearing
centrifugal pump
Prior art date
Application number
PCT/JP1997/004485
Other languages
English (en)
Japanese (ja)
Inventor
Yukimasa Nakatsukasa
Original Assignee
Ebara Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ebara Corporation filed Critical Ebara Corporation
Priority to AU51383/98A priority Critical patent/AU5138398A/en
Priority to PCT/JP1997/004485 priority patent/WO1999030039A1/fr
Publication of WO1999030039A1 publication Critical patent/WO1999030039A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/043—Shafts
    • F04D29/044—Arrangements for joining or assembling shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/086—Units comprising pumps and their driving means the pump being electrically driven for submerged use the pump and drive motor are both submerged
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
    • F04D29/4266—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps made of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • F04D7/04—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type the fluids being viscous or non-homogenous

Definitions

  • the present invention relates to an improvement in a centrifugal pump in which a suction port and a discharge port are formed, and an impeller is rotatably housed inside a casing made of stainless steel.
  • centrifugal pumps are widely used because they can exhibit desired performance and have relatively low manufacturing costs.
  • the pump and the driving means are arranged in the lateral direction, the pump rotation shaft and the output shaft of the driving means are flanged, and the pump rotation shaft is supported by the motor-side bearing and the impeller-side bearing.
  • the rotary shaft is removed from the pump casing along with the bearing when performing disassembly for maintenance, repair, and other purposes. Was difficult. This required a great deal of labor for disassembly and assembly.
  • centrifugal pump which has an inner casing for supporting the liner ring provided near the impeller and joins the inner casing to the casing body, securely seals the joint.
  • welding had to be performed over the entire circumference of the inner casing, and the labor required for manufacturing was extremely large.
  • the pump and the driving means are arranged in the vertical direction, and the rotating shaft is
  • the number of parts near the impeller was relatively large, and as a result the number of parts required a lot of labor for assembly, and the strength design was very difficult. .
  • bearing housings, motor brackets, motor casings, etc. are used to support members such as bearings, but it is difficult to mount and position these members.
  • stainless steel submerged filth pumps were conventionally manufactured at low cost, so the casing was automatically determined once the impeller was selected.
  • the output of the driving means, etc. even if the same casing is used, plural kinds of blades ( Or there is a request to select and use an impeller.
  • An impeller is provided inside a casing formed with a suction port and a discharge port and made of stainless steel.
  • An object of the present invention is to provide a centrifugal pump capable of solving a problem that may occur in a centrifugal pump rotatably housed. Disclosure of the invention
  • the centrifugal pump according to the present invention is a centrifugal pump in which a suction port and a discharge port are formed and an impeller is rotatably housed inside a casing made of a stainless steel plate, wherein the pump and the driving means are provided. It is arranged in the horizontal direction, the pump rotation axis and the driving means.
  • the pump shaft is supported by a motor-side bearing and an impeller-side bearing, and the motor-side bearing and the impeller-side bearing are supported by a bearing housing.
  • the outer flange portion is in contact with the casing and is supported by the ribs.
  • the bearing is characterized in that the inner diameter of the portion of the housing where the impeller-side bearing is supported is smaller than the inner diameter of the opening at the impeller-side end of the flange.
  • the inner diameters of the respective parts are configured to have the above-described relationship, it is possible to separate the flange and draw out the rotating shaft together with the motor-side bearing and the impeller-side bearing. Then, the rotating shaft can be removed together with the bearing from the bearing housing or the pump casing. As a result, maintenance, repair, and other disassembly operations are easier. Also, when assembling, since the rotating shaft may be inserted together with the bearing, the labor of the assembling work is remarkably reduced.
  • the centrifugal pump of the present invention is a centrifugal pump in which a suction port and a discharge port are formed and an impeller is rotatably housed inside a casing made of a stainless steel plate.
  • the output shaft of the driving means is inserted into a lumen at a connection point provided on the pump rotation shaft, and the output shaft of the driving means is keyed to the lumen.
  • a key groove is formed, and the connection portion includes a slit formed on only one side with respect to a center line thereof, and a cutout provided on a side on which the slit is formed. And fastening means for inserting the notch into the slit to tighten the slit.
  • the centrifugal pump of the present invention in the centrifugal pump in which the suction port and the discharge port are formed and the impeller is rotatably housed inside a casing made of a stainless steel plate, Are arranged in the horizontal direction, near the impeller. And an inner casing for supporting the liner ring provided in the casing.
  • the inner casing is joined to the casing main body, and at a place where the inner casing is joined to the casing main body, A part of the casing protrudes toward the casing body and makes line contact with the inner wall surface of the casing body, and the line contact portion has a continuous closed curve (for example, a circular shape) and is in line contact with the casing body.
  • the inner casing is spot-welded to the inner wall surface of the casing body at a portion closer to the end than the location.
  • the protruding portion of the inner casing is brought into point contact with the inner wall surface of the casing main body (preferably, metal contacts each other), a sufficient seal can be secured. And since sufficient sealing is performed by the said line contact, there is no need to apply a special seal over the entire circumference of the inner casing or to perform continuous welding.
  • the centrifugal pump of the present invention is a centrifugal pump in which a suction port and a discharge port are formed, and an impeller is rotatably housed inside a casing made of stainless steel, wherein the pump and the driving means are provided.
  • a lower casing is provided between the driving means and the impeller, a rotating shaft is supported by an upper bearing and a lower bearing, and an oil seal is provided below the lower bearing.
  • An oil filling chamber is defined by an oil seal and lower casing, and a strainer, motor casing, and a suction cover are attached to the lower casing.
  • the lower casing performs support of the lower bearing, support of the oil seal, definition of the oil filling chamber, installation of the strainer, installation of the motor casing, and installation of the suction cover. It is configured as a member.
  • the mounting members such as screws and bolts are concentrated on the lower casing, and the assembling work is facilitated.
  • the parts for mounting or disposing the above-mentioned members are only the lower casing and the mounting members (or fastening members) (such as screws and bolts), so the number of parts is dramatically reduced. I do.
  • the external force or load acting on each member also concentrates on the lower casing, only the strength of the lower casing needs to be considered when designing the strength, and the labor required for the strength design is greatly reduced. Is done.
  • a bearing cover for supporting an upper bearing is provided above the driving means.
  • the bearing cover is made of a material having good workability, heat radiation, and light weight. These are the forces that can dissipate and diffuse the heat inside the motor.
  • the centrifugal pump according to the present invention is a centrifugal pump in which a suction port and a discharge port are formed and an impeller is rotatably housed inside a casing made of stainless steel plate, wherein the pump and the driving means are provided.
  • the rotating shaft is supported by an upper bearing and a lower bearing, the lower bearing is supported by a bearing housing, and an oil filling chamber is defined by the bearing housing and a motor bracket. And a tightening band for assembling the drive means and its casing by engaging the hook-shaped portion with the lower end of the motor cover.
  • the bearing housing, the motor bracket, the motor casing, the tightening band The lower end of the bracket is fixed at one place by fastening means, and the bearing housing, motor bracket, motor casing
  • the space defined by grayed is fitted is 0-ring, the clamping band under end is welded to the fastening means.
  • the zero ring functions as a seal for preventing water from entering from the outside of the pump and a seal for preventing oil in the oil chamber from leaking to the outside, so that the number of parts is reduced. Then, the assembling work becomes easy. Since the bearing housing, motor bracket, motor casing, and tightening band are fixed at one place, the assembly work becomes easy. Furthermore, since the tightening assembly is performed by the tightening band, the speed of the assembling work is improved.
  • the centrifugal pump according to the present invention is a centrifugal pump in which a suction port and a discharge port are formed and an impeller is rotatably housed inside a casing made of a stainless steel plate, wherein the pump and the driving means are provided.
  • the rotating shaft is supported by an upper bearing and a lower bearing, the lower bearing is supported by a bearing housing, and the bearing housing and the motor bracket define an oil filling chamber.
  • the housing, motor bracket, motor casing, and the lower end of the tightening band are fixed in one place by fastening means, and in the fixed place, the space defined by the bearing housing, motor bracket, and motor casing is zero.
  • the ring is fitted, and the end of the motor casing is narrowed by the lower end of the engagement cap and the motor bracket.
  • the engaging cap is fixed to the motor bracket by fastening means.
  • the centrifugal pump of the present invention is a centrifugal pump in which a suction port and a discharge port are formed, and an impeller is rotatably housed inside a casing made of a stainless steel plate.
  • the working fluid is water mixed with foreign matter, and the semi-open impeller and the close impeller are configured to be interchangeable.
  • the level of the blade tip is closed.
  • it is configured to be approximately equal to the level of the car's main plate.
  • the respective ends of the casing, the casing of the driving means, and the motor bracket are integrally engaged at one place by the fastening means.
  • an air bleeding mechanism is provided in a region of the casing above the level of the tip of the blade, the air bleeding mechanism comprising: an air bleeding hole drilled at a predetermined position in the casing; It is preferable to have a sewage diffusion prevention cover for preventing sewage from scattering from the water. The air present in such areas is not exhausted by the rotation of the impeller, and if not removed, would have a serious adverse effect on the pumping function. And, since the sewage diffusion prevention cover is provided, sewage can be prevented from being spouted and diffused with the spouting of air.
  • the centrifugal pump of the present invention has a suction port and a discharge port, and a rotatable impeller rotatably accommodated inside a casing made of a stainless steel plate.
  • the heart pump is characterized in that a female force seal cover surrounding the female force seal is provided around the female force seal provided around the rotation axis of the pump in the casing.
  • FIG. 1 is a side sectional view showing a first embodiment of the present invention
  • FIG. 2 is a side sectional view showing a second embodiment of the present invention
  • FIG. 3 is used in the second embodiment.
  • FIG. 4 is a perspective view of the output shaft
  • FIG. 4 is a cross-sectional view taken along line (4)-(4) in FIG. 3
  • FIG. 5 is a cross-sectional view of an output shaft used other than in the present invention
  • FIG. FIG. 7 is a side sectional view showing a third embodiment of the present invention
  • FIG. 7 is a partially enlarged view of FIG. 6
  • FIG. 8 is a side sectional view showing a fourth embodiment of the present invention
  • FIG. 10 is a side sectional view showing a pump different from the embodiment of FIG. 9, FIG.
  • FIG. 10 is a side sectional view showing a fifth embodiment of the present invention, and FIG. 11 is a part of FIG. FIG. 12 is an enlarged view, FIG. 12 is a side sectional view showing a sixth embodiment of the present invention, FIG. 13 is a partially enlarged view of FIG. 12, and FIG. ⁇ A side sectional view showing one mode of the embodiment.
  • FIG. 15 is a side sectional view showing another mode of the seventh embodiment of the present invention, FIG. 16 is a partially enlarged view of FIG. 15, and FIG. FIG. 18 is a side sectional view showing an eighth embodiment, and FIG. 18 is a side sectional view showing a ninth embodiment of the present invention.
  • FIG. 1 shows a first embodiment of the present invention.
  • the whole is denoted by reference numeral P to indicate a centrifugal pump according to the first embodiment, which is configured by rotatably housing an impeller 1 inside a stainless steel casing C. It is driven by a motor indicated by.
  • the rotating shaft 10 of the pump P is connected to the output shaft MO of the motor via the pump-side coupling 12 and the motor-side coupling MF.
  • the rotating shaft 10 is supported by a motor-side bearing 14 and an impeller-side bearing 16 .
  • the motor-side bearing 14 and the impeller-side bearing 16 are connected to a bearing housing 18 (in FIG. Attached to the pump casing C.
  • Reference numeral 20 denotes a lip of the bearing housing 18 and has a role of supporting a flange that comes into contact with the bearing housing 18 and the casing.
  • the inner diameter of the portion where the motor-side bearing 14 is supported is indicated by reference numeral ⁇ 1
  • the inner diameter of the portion where the impeller-side bearing 16 is supported is indicated by internal diameter ⁇ 2.
  • the inner diameter of the opening at the end of the lip 20 supporting the bearing housing 18 on the side of the impeller 1 is indicated by reference numeral 03.
  • a rotary shaft 10 of the pump which is indicated as a whole by reference numeral P, is connected to an output shaft MO of a driving motor, which is indicated by the reference numeral M, through a connection point 10-J.
  • the single unit of the rotary shaft 10 (including the connection point 10-J) of the pump P is shown in Figs.
  • connection point 10 — J of the rotating shaft 10 is a bore 10 — I into which the motor output shaft M 0 (FIG. 2) is to be inserted, and a center line 10 — C against one side (In Fig. 3, in the center line 10-C, the left side of the center line 10-C), and the notch for tightening the slit 10-S with the fastening screw 24 26 are formed.
  • a keyway 10-K for keying the motor output shaft M0 (FIG. 2) is formed in the bore 10-I of the connection point 10-J.
  • the motor output shaft M O When connecting the rotating shaft 10 and the motor output shaft M O, the motor output shaft M O is inserted into the inner cavity 10-I and fixed with the key 28. Then, the fastening screws 24 may be tightened.
  • the output shaft of the motor (indicated by the symbol M O in FIGS. 1 and 2) is used as the rotary shaft 10 of the pump, which is entirely represented by the symbol P.
  • the liner ring 30 provided in the vicinity of the impeller 1 is supported by an inner casing C- 12, and the inner casing C- 12 is a portion indicated by reference numeral (7) in FIG. , Is joined to the casing body C-10.
  • Reference numeral 30 in FIG. 7 denotes a portion indicated by reference numeral (7) in FIG. 6, that is, a connection portion between the casing body C-10 and the inner casing C-12.
  • the portion indicated by the reference numeral 30 — T of the inner casing C—12 protrudes toward the casing body C 110, and is linearly connected to the casing body inner wall surface C 110 — 1.
  • the contact 3 4 forms a continuous closed curve (for example, a circumferential shape).
  • the portion 30-E above the line contact point 34 in FIG. 7 is spot-welded at the point indicated by reference numeral 36, Thus, the inner casing C-12 is fixed to the casing body C-10.
  • a projecting portion 30-T is formed on the inner casing C-12, and the projecting portion 30-T is in line contact with the casing body C-110 (inner wall surface C-110-I) (reference numeral 34). ), And the metals are brought into contact with each other, so that sufficient sealing can be performed against the action of hydraulic pressure as indicated by the arrow 7L. Then, since sufficient sealing is performed by the line contact (reference numeral 34), it is not necessary to perform welding over the entire circumference of the inner casing C-112.
  • connections shown in FIGS. 6 and 7 are also applicable to the pumps shown in FIGS. 1 and 2, and in order to indicate that, in FIGS. F 6).
  • FIG. 8 shows a fourth embodiment of the present invention.
  • the pump indicated by the symbol P in its entirety has a suction port I for sucking water through a suction cover (not shown) 491-1a and a discharge port E for discharging water, and is made of stainless steel.
  • Shell casing C made of stainless steel.
  • This pump P is different from the pumps shown in FIGS. 1, 2 and 6 in that it has a drive mechanism (motor: indicated by symbol M) inside. That is, the rotating shaft 10 of the pump P in FIG. 8 is integrated with the rotor 38, and a stay 39 is provided to face the rotor 38.
  • a drive mechanism motor: indicated by symbol M
  • a lower casing 40 is provided below the pump P, and the lower casing 40 is shown with hatching in FIG.
  • the rotating shaft 10 is supported by an upper bearing 41 and a lower bearing 42, and oil seals 43, 43 are provided below the lower bearing 42.
  • An oil filling chamber 44 is defined by 43, 43 and the lower casing 40. The oil filling chamber is filled with lubricating oil.
  • the outer casing C is attached to the lower casing 40 with screws 46, the motor casing 47 is attached with screws 48, and the suction cover 49-a (shown clearly) is attached with screws 49. ) Is attached.
  • the lower casing 40 supports the lower bearing 42, supports the oil seal 43, defines and installs the oil filling chamber 44, mounts the motor casing 47, installs the suction cover 49, and It is configured as a member for performing the attachment.
  • the lower casing 40 By configuring the lower casing 40 in this manner, mounting members such as screws and bolts are concentrated on the lower casing 40, and the assembling work is facilitated. At the same time, the parts for mounting or disposing the above-mentioned members are only the lower casing 40 and the mounting members (such as screws and bolts), so that the number of parts is drastically reduced. Furthermore, since the external force or load acting on each member is also concentrated on the lower casing 40, only the strength of the lower casing 40 needs to be considered when designing the strength, which is spent on the strength design. Labor is greatly reduced.
  • the embodiment of FIG. 8 shows that the lower casing 40 (in the embodiment of FIG. 8) is divided into two members 40-A and 40-B.
  • the member 40—A supports the lower bearing 42 and the upper oil seal 43
  • the member 40—B is the lower oil seal, the suction cover 49-a, and the poly 51
  • the oil filling chamber 44A is defined by the members 40-1A and 40-B. Therefore, as compared with FIG. 9, the labor for assembling and designing the strength is increased, and the number of parts is increased.
  • a bearing cover 50 for supporting the upper bearing 41 is fitted to the upper part of the pump P.
  • the bearing cover 50 is made of a material having good workability, heat dissipation and lightness, for example, like aluminum, and not only supports the bearing 41 but also dissipates heat inside the module. Heat dissipation effect
  • FIGS. 10 and 11 show a fifth embodiment of the present invention.
  • the pump indicated by reference numeral P in FIG. 10 as a whole has a drive mechanism (motor: indicated by reference numeral M) therein, similarly to the pump shown in FIG. That is, also in the pump P of FIG. 10, the rotating shaft 10 is integrated with the rotor 38, and a stay 39 is provided to face the rotor 38.
  • Reference numeral 49 indicates casing of the motor M.
  • the rotating shaft 10 is supported by an upper bearing 41 and a lower bearing 42, and a mechanical seal 52 is provided below the lower bearing 42.
  • the lower bearing 42 is supported by a bearing housing 53.
  • the bearing housing 53 together with the lower bracket 54, defines an oil filling chamber 44 in which lubricating oil is filled.
  • reference numeral 55 denotes a fastening band for assembly.
  • the fastening band 55 has its lower end fixed at the position indicated by the reference numeral (11) in FIG. 10.
  • the hook-shaped portion 55-F at the upper end engages with the lower end of the motor cover 57.
  • the motor M and motor casing 49 are assembled.
  • Fig. 10 The location indicated by reference numeral (11) in Fig. 10 is the location where the bearing housing 53, the motor bracket 54, the motor casing 49, and the tightening band 55 are fixed at the same time. 1 is indicated by 1.
  • bearing housing 53, motor bracket 54, motor casing 49, and tightening band 55 are concentrated at the portion indicated by reference numeral (11) as described above.
  • the 0 ring 56 is fitted in the space (1 1) -S defined by these members.
  • the 0 ring 56 serves to prevent water outside the pump from entering the motor M (FIG. 10) or the oil filling chamber 44 (FIG. 10), It has the effect of preventing the lubricating oil in the chamber 44 from entering the motor M.
  • the 0 ring 56 functions as a water seal and an oil seal. In this way, by giving the 0-ring 56 a function as two types of sealing materials, the number of parts is reduced and the assembling work is facilitated.
  • FIGS. 12 and 13 show a sixth embodiment of the present invention.
  • the pump denoted by reference numeral P in FIG. 12 also has a drive mechanism (motor: denoted by reference character M) inside thereof, similarly to the pump shown in FIG.
  • a stator 39 is provided integrally with the evening 38 and opposed to the rotor 38.
  • Reference numeral 49 indicates the case of the mobile phone.
  • the rotating shaft 10 is supported by an upper bearing 4 1 and a lower bearing 4 2 .
  • a mechanical force seal 5 2 is provided below the lower bearing 4 2, and the upper bearing 4 2 is supported by a bearing housing 5 3.
  • the bearing housing 53 and the motor bracket 54 define an oil filling chamber 44 filled with lubricating oil, and the oil filling chamber 44 is provided with a baffle plate 61.
  • the baffle plate 61 is for preventing the lubricating oil in the oil filling chamber 44 from rotating.
  • the bearing housing 53, the motor bracket 54, and the motor casing 49 are simultaneously fixed at the position indicated by the reference numeral (13). Details of this part (13) are shown in Fig.13.
  • the space indicated by the reference numeral (13) is a space defined by the bearing housing 53, the motor bracket 54, and the motor casing 49. Are fitted.
  • the O-ring 62 functions to prevent water outside the pump from entering the inside of the motor M (FIG. 12) or the filling chamber 44 (FIG. 12). This has the effect of preventing the lubricating oil in the oil filling chamber 44 from entering the motor M. Therefore, the O-ring 62 also functions as a water seal and a wheel seal. And, since the 0-ring 62 functions as two types of sealing materials, the number of parts is reduced, and the assembling work is facilitated.
  • the end of the motor casing 4 9 4 9 — E is the lower end of the engagement cap 6 3 6 3 — E and the motor bracket 54 pinch and fix it.
  • the cap 63 is fixed by screwing the bolt 64 and the nut 65 together.
  • the end 49 -E of the motor casing 49 is held by the lower end 63 -E of the engagement cap 63 and the motor bracket 54.
  • the bolt (64) and the nut (65) are screwed together to fix the cap (63) to the motor bracket (54), thereby completing the fixing of the portion (13).
  • Reference numeral 66 in FIG. 13 denotes a sleeve that functions as a stopper for preventing deformation of the cap 63.
  • FIG. 14, FIG. 15, and FIG. 16 show a seventh embodiment of the present invention.
  • the pump indicated by the reference symbol P in FIG. 14 is a so-called “submerged waste pump”, for example, a pump having a casing C formed by pressing stainless steel. Then, from the suction port indicated by the symbol I, water mixed with dirt or foreign matter EJ indicated by a dotted line in FIG. 14 (FIG. 15) is sucked, and the impeller 1-7 having the impeller 70 (closed impeller main plate) is drawn. (Closed impeller) gives heads and discharges from outlet E.
  • the blade indicated by reference numeral 70 (the main plate of the closed impeller) has a very large area, as is clear from FIG. 14, and is set to a size large enough to push out and discharge foreign matter EJ. .
  • Such a blade 70 is very useful for removing foreign substances that cannot be discharged from the casing C by simply adding head to water.
  • the pump shown in FIG. 15 also relates to the same embodiment as the pump P shown in FIG. 14, and the pump in FIG. 15 also has an impeller (semi-open type impeller).
  • the blades 74 (semi-open impeller blades) used in the pump shown in FIG. 15 are much smaller than the blades 70 (closed impeller main plate) in FIG. are also provided.
  • the level of the tip of the impeller 74 (the lower end in Fig. 15) 74-E (indicated by the two-dot chain line in Fig. 15) LP is almost equal to the level of the main plate of the closed impeller. It is designed so that foreign matter EJ-1 of diameter D—EJ does not interfere with the blade 74.
  • Such a blade 74 is suitable for, for example, discharging foreign matter from the pump casing such that the blade itself is damaged when it comes into contact with the blade.
  • the level LP at the tip of the impeller 74 is almost equal to the level at the tip of the impeller 1-7. Therefore, also in FIG. 15, the cross-sectional area of the portion through which the foreign matter EJ-1 passes in the casing C is equal to the cross-sectional area of the portion through which the foreign matter EJ passes in FIG.
  • the pump of FIG. 14 and the pump of FIG. 15 having different blade shapes and sizes have the same amount of foreign matter passing therethrough.
  • the embodiments shown in FIGS. 14 and 15 are characterized in that the blades can be replaced depending on the type of foreign matter or waste mixed in the water to be treated. Moreover, even if the blades are replaced, the amount of foreign matter passing through does not change significantly. At this time, when replacing the blades, the blade mounting bolts 7 2 (FIG. 14) of the impellers 1 to 7 may be removed.
  • blades having dimensions and shapes corresponding to the pump output can be used. That is, if the horsepower of the motor M is large, a large blade can be used, and if the horsepower is small, a small blade may be used.
  • FIG. 15 When the blade 74 shown in FIG. 15 is used, air or bubbles existing above the level LP cannot be removed. Therefore, in FIG. 15, the portion indicated by reference numeral (16) is used to remove air or bubbles existing above the level LP. Is configured. The configuration of the area indicated by the reference numeral (16) is shown in FIG.
  • an air vent hole 78 is formed in the portion (16) of the casing C.
  • a cover 79 surrounding the air vent hole 78 is formed in order to prevent the sewage from being scattered by the ejection.
  • FIG. 17 shows an eighth embodiment of the present invention.
  • the pump denoted by reference numeral P as a whole has a rotation axis 10 as an output shaft of a motor M as driving means.
  • the impeller 1 is rotatably housed. Then, water is sucked in from the suction port I (arrows A-I), the head is added by the impeller 1, and then water is discharged from the discharge port E (arrows A-E).
  • a mechanical seal 82 is provided around the rotation axis 10 in the casing C. Further, a mechanical seal cover 84 is provided so as to surround the mechanical seal 82.
  • FIG. 18 shows a ninth embodiment of the present invention. This embodiment is substantially the same as the embodiment of FIG. 17, except that the casing C-8 is formed so as to surround the female seal 82 instead of the mechanical seal cover 84 of FIG. 6 is extended.
  • the bearing cover for supporting the upper bearing is made of a material with good workability, heat dissipation and light weight, the heat of the motor can be dissipated.
  • the ring is configured to function as a water seal and an oil seal, the number of parts is reduced and the assembling work is facilitated.

Abstract

L'invention concerne une pompe centrifuge capable de résoudre différents problèmes qui pourraient survenir dans des pompes centrifuges présentant une hélice placée de manière rotative à l'intérieur d'un carter en acier inoxydable formé d'un orifice d'aspiration et d'un orifice de sortie. Selon l'invention, une pompe centrifuge comprend un carter (C) en acier inoxydable dans lequel sont ménagés un orifice d'aspiration (I) et un orifice de sortie (E) et une hélice (1, 1-7) placée de manière rotative à l'intérieur du carter (C), la pompe (P) et l'organe d'entraînement (M) étant disposés verticalement. Un fluide de travail est constitué d'eau mélangée à des matières étrangères (EJ, EJ-1) et une hélice de type semi-ouverte et une hélice fermée sont construites de manière à être utilisées en fonction du genre de matières étrangères ou du genre de déchets mélangés dans l'eau en cours de traitement. On peut ainsi utiliser une variétés d'hélices pour un même carter. De plus, même si les pales sont interchangeables, la quantité de matières étrangères traversant la pompe ne se trouve aucunement modifiée.
PCT/JP1997/004485 1997-12-08 1997-12-08 Pompe centrifuge WO1999030039A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU51383/98A AU5138398A (en) 1997-12-08 1997-12-08 Centrifugal pump
PCT/JP1997/004485 WO1999030039A1 (fr) 1997-12-08 1997-12-08 Pompe centrifuge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1997/004485 WO1999030039A1 (fr) 1997-12-08 1997-12-08 Pompe centrifuge

Publications (1)

Publication Number Publication Date
WO1999030039A1 true WO1999030039A1 (fr) 1999-06-17

Family

ID=14181606

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1997/004485 WO1999030039A1 (fr) 1997-12-08 1997-12-08 Pompe centrifuge

Country Status (2)

Country Link
AU (1) AU5138398A (fr)
WO (1) WO1999030039A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008178922A (ja) * 2007-01-23 2008-08-07 Jtekt Corp ワーク組付治具、電動ポンプの組付治具、及び電動ポンプの組付方法
JP2015038356A (ja) * 2014-11-20 2015-02-26 株式会社川本製作所 水中ポンプ用羽根車及び水中ポンプ
DK201500834A1 (en) * 2015-12-22 2017-07-03 F P Production Grindsted Aps A pump for pumping a liquid or slurry
WO2024028907A1 (fr) * 2022-08-03 2024-02-08 Affetti Pumps S.R.L. Pompe électrique ou pompe à moteur équipée d'un dispositif de fixation, et procédure de fixation associée

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5435842Y2 (fr) * 1974-07-22 1979-10-30
JPS5542272B2 (fr) * 1974-06-19 1980-10-29
JPS5697591U (fr) * 1979-12-27 1981-08-01
JPS5787169U (fr) * 1980-11-17 1982-05-29
JPS6328896U (fr) * 1986-08-08 1988-02-25
JPH03130600A (ja) * 1989-07-05 1991-06-04 Ebara Corp 遠心ポンプケーシング
JPH0932791A (ja) * 1995-07-20 1997-02-04 Ebara Corp 水中ポンプ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5542272B2 (fr) * 1974-06-19 1980-10-29
JPS5435842Y2 (fr) * 1974-07-22 1979-10-30
JPS5697591U (fr) * 1979-12-27 1981-08-01
JPS5787169U (fr) * 1980-11-17 1982-05-29
JPS6328896U (fr) * 1986-08-08 1988-02-25
JPH03130600A (ja) * 1989-07-05 1991-06-04 Ebara Corp 遠心ポンプケーシング
JPH0932791A (ja) * 1995-07-20 1997-02-04 Ebara Corp 水中ポンプ

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008178922A (ja) * 2007-01-23 2008-08-07 Jtekt Corp ワーク組付治具、電動ポンプの組付治具、及び電動ポンプの組付方法
JP2015038356A (ja) * 2014-11-20 2015-02-26 株式会社川本製作所 水中ポンプ用羽根車及び水中ポンプ
DK201500834A1 (en) * 2015-12-22 2017-07-03 F P Production Grindsted Aps A pump for pumping a liquid or slurry
WO2024028907A1 (fr) * 2022-08-03 2024-02-08 Affetti Pumps S.R.L. Pompe électrique ou pompe à moteur équipée d'un dispositif de fixation, et procédure de fixation associée

Also Published As

Publication number Publication date
AU5138398A (en) 1999-06-28

Similar Documents

Publication Publication Date Title
EP0726397B1 (fr) Pompe avec passage d'écoulement amélioré
JP3182307B2 (ja) 全周流型ポンプ
JP3077490B2 (ja) ポンプ組立体
US4527947A (en) Seal-free impeller pump for fluids containing abrasive materials or the like
US6799943B2 (en) Centrifugal pump with multiple inlets
US6010086A (en) Grinder pump
JPH08232884A (ja) 全周流型ポンプ群及びその製造方法
ATE196345T1 (de) Seitenströmungspumpe
WO1999030039A1 (fr) Pompe centrifuge
KR950006402B1 (ko) 원심펌프
JPH07243392A (ja) ポンプユニット
JP2886444B2 (ja) 全周流型ポンプ
JPH09170588A (ja) 水中ポンプ装置の部品取付け保持装置
JP4184763B2 (ja) モータ一体型ポンプ
JP3115751B2 (ja) 全周流型キャンドモータポンプ
JP3100543B2 (ja) 全周流型ポンプ
JP2913476B1 (ja) 遠心多段ポンプ及び、同ポンプの最終段用案内羽根
JP3474354B2 (ja) ポンプケーシング
JPH08144943A (ja) ポンプユニット
JPH09209976A (ja) 全周流型ポンプ
JPH0533754Y2 (fr)
RU2005217C1 (ru) Многоступенчатый осевой насос дл перекачки неоднородных сред
CA1170907A (fr) Pompe a rotor sans garniture etanche pour fluides a teneur de matiere abrasives ou analogues
JPH0688599A (ja) 板金製ポンプケーシング
JP2000073983A (ja) ポンプ装置

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 97182472.X

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR CN ID JP KR NZ SG US VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: KR

122 Ep: pct application non-entry in european phase