• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Summary The invention relates to a pump wheel assembly and a pump for pumping liquid, comprising a pump chamber and a pump wheel (4) rotatable in said pump chamber which are supported in a lower end (5) of an axially extending drive shaft unit (6), which lower The drive shaft unit (6) is received in a cylindrical recess (10) in the impeller (4), the impeller (4) being displaceable in the axial direction in the direction of travel to said drive shaft unit (6). Furthermore, the impeller (4) comprises an axially extending hall (21) connecting said cylindrical recess (10) and said pump chamber, and that the drive shaft unit (6) comprises an axially extending pin (22) projecting from the lower of the drive shaft unit (6) (5), the pin (22) being arranged in said hall (21).
    公开号:SE1350958A1
    申请号:SE1350958
    申请日:2013-08-15
    公开日:2015-02-16
    发明作者:Patrik Andersson；Stefan Ramström
    申请人:Xylem Ip Man S R L；
    IPC主号:
    专利说明:

    TECHNICAL FIELD OF THE INVENTION The present invention relates generally to a pump for pumping liquid, and in particular to a pump for pumping contaminated liquid containing solid material, such as sewage or sewage, plastic materials, hygiene items, textiles, rags, etc.
    According to a first aspect, the present invention relates to a pump comprising a pump chamber and a pump wheel rotatable in said pump chamber which is supported in a lower spirit of an axially extending drive shaft unit. The lower end of the drive shaft unit is received in a cylindrical recess in the impeller, the impeller Or being displaceable back and forth in the axial direction relative to said drive shaft unit.
    According to a second aspect, the present invention relates to an impeller assembly for placement in a pump chamber of a pump intended for pumping liquid.
    Background of the invention and the state of the art In plants such as sewage stations, septic tanks, wells, etc., solid materials or contaminants, such as socks, bandages, paper, etc., are tapped into the plant pump, for example a drinkable pump which is immersed in the plant basin. / container. The contaminants are sometimes too large to pass through the pump in cases where the impeller and the impeller set are located at a fixed distance from each other. In any case, large pieces of the solid material can cause the impeller to wedge and thus seriously damage the pump. Such an unintentional shutdown is costly, due to expensive, cumbersome, and unplanned maintenance work.
    From the European patent EP 1,899,609 Or it is a pump comprising a pump housing provided with a rotatable impeller, which Or is supported by a drive shaft, and an impeller shaft / suction cap. The impeller is inclined in the axial direction in relation to the impeller seat in order to be able to let through larger pieces of solid material which otherwise risk blocking the pump or wedging the impeller. The impeller has a cylindrical recess in which the lower end of the drive shaft unit is received, and the impeller is displaceable in the axial direction between a lower position and an upper position. Furthermore, this impeller has an axially extending shaft which connects the cylindrical recess and the pump chamber of the pump, in order to allow the insertion of a suitable tool to be able to connect the impeller to the drive shaft.
    During operation of the pump, the said through hole plugged in by means of a plug / hood prevents the pumped liquid and pieces of solid material from entering the cylindrical recess. However, it is sometimes the case that when servicing the pump, such as readjusting the axial gap that exists between the impeller and the impeller seat, the importance of reassembling the said plug before the pump is used again is overlooked. As the pumped liquid enters the cylindrical recess of the impeller, it causes the integral parts of the Olden to corrode, which in turn means that the axial displaceability between the impeller and the drive shaft is adversely affected or completely eliminated, and in addition pieces of solid material can enter the cylindrical recess which risks mechanically preventing axial displacement of the impeller in relation to the drive shaft.
    In addition, the interface between the impeller and the drive shaft unit has a relatively small axial spread, ie. abutment in radial direction between the drive shaft unit and the cylindrical recess, which means that the impeller risks being tilted when the same is axially loaded with an asymmetrically applied force.
    Furthermore, it should be mentioned that such submersible pumps are used to pump liquids from basins which are difficult to maintain and the pumps are often in operation for long periods of time, not up to 12 hours per day or more. Therefore, it is extremely unwise to provide a pump with a long service life.
    Brief Description of the Objects of the Invention The present invention aims to obviate the above-mentioned disadvantages and shortcomings of prior art pumps and to provide an improved pump. A basic object of the invention is to provide an improved pump and impeller assembly of initially defined type, the impeller having means which completely eliminate the risk of the pumped liquid and pieces of solid material entering its cylindrical recess.
    A further object of the present invention is to provide a pump and impeller assembly where the impeller does not risk being skewed due to an asymmetrically applied force acting in the axial direction against the impeller.
    It is also an object of the present invention to provide an improved pump of the initially defined type which in a reliable manner allows large pieces of solids to pass through the pump.
    Brief description of the features of the invention According to the invention, at least the basic object is achieved by means of the initially defined pump and the impeller assembly, which features have the features defined in the independent claims. Preferred embodiments of the present invention are further defined in the dependent claims.
    According to the present invention there is provided a pump of the initially defined type, which is characterized in that the impeller comprises an axially extending hall 35 connecting said cylindrical recess and said 4 pump chambers, and that the drive shaft unit comprises an axially extending pin projecting lower from Thus, the present invention is based on the insight that by arranging a pin which is always in the through-hole, the impeller has the pumped liquid and solid material prevented from entering the cylindrical recess and the second shaft has the drive shaft unit, the said pin being arranged in the said. negatively affect the operation of the pump.
    According to a preferred embodiment of the present invention, a water seal is arranged in the interface between said hal and said pin.
    According to a hazardous method of the present invention, a mantle surface has the pin abutting an inner surface of the tail. This means that the control between the drive shaft unit and the impeller has a greater extent in the axial direction, in order to eliminate the risk of tilting of the impeller at an asymmetrically mounted axial force.
    According to a preferred embodiment, the drive shaft unit comprises a drive shaft and a sleeve, the sleeve surrounding and being releasably connected to the drive shaft and forming part of the lower spirit of the drive shaft unit. This means that the sleeve can be mounted in the cylindrical recess of the impeller, forming an impeller assembly, whereby the impeller assembly can be sold as an improvement kit to existing pumps with axially displaceable impeller. Additional features and features of the invention will be apparent from the other dependent claims and from the following detailed description of preferred embodiments.
    Brief Description of the Drawings A more complete understanding of the above and other features and advantages of the present invention will become apparent from the following detailed description of preferred embodiments when taken in conjunction with the accompanying drawings, in which: Fig. 1 is a schematic sectional side view of a hydraulic unit of a pump according to the invention, showing the impeller in a lower position which corresponds to a normal operating position, Fig. 2 is a schematic sectional side view of an impeller assembly according to the invention and a drive shaft, where the impeller is in the lower position, Figs. Fig. 3 is a schematic sectional side view of the impeller assembly according to Fig. 2, where the impeller is bellows in a position remote from the lower position; Fig. 4 is a schematic sectional side view of the drive shaft unit according to a first embodiment; Fig. 5 is a schematic sectional view. side view of the drive shaft unit according to a second embodiment, Fig. 6 dr a schematic sectional view from above of the drive shaft unit according to Fig. 4, taken along the line VI-VI, and a part of the impeller, and Fig. 7 is a schematic perspective view from above of an impeller section.
    Detailed description of preferred embodiments Reference is made initially to Figure 1, which shows a part of a pump according to the invention, more specifically the hydraulic unit of the pump, generally designated 1. Other parts of the pump have been removed for clarity when looking at the figure, and these parts include of a drive unit and a sealing unit between the drive unit and the hydraulic unit 1. The present invention relates to pumps in general, but in the preferred embodiment the pump is constituted by a submersible centrifugal pump, the following description of the invention below being based on such a pump without being limited thereto.
    The hydraulic unit 1 comprises a pump housing or volume 2, which defines a pump chamber 3, a pump wheel 4 rotatable in said pump chamber 3, which is supported in a lower end 5 of an axially extending drive shaft unit, generally designated 6, and a suction cap 7, which has a centrally located inlet opening 8 for incoming liquid flow. The suction cap 7, also the edge of the impeller set, is preferably releasably connected to the pump housing 2, for example by means of a plurality of bolts, in such a way that the suction cap 7 can not rotate relative to the pump housing 2. The impeller 4 is driven in rotation by the drive shaft unit 6. Operation. Furthermore, the pump housing 2 comprises an outlet opening 9 for outgoing water bottle, which outlet opening 9 in the embodiment shown is radially directed.
    According to the present invention, the impeller 4 is forwardly and displaceably in the axial direction relative to said drive shaft unit 6, between a lower position (shown in Figure 1) and a lateral position. As the impeller 4 is displaced from the lower position, the impeller 4 is displaced in the direction away from the suction cap 7 in order to escape large pieces of solid material found in the pumped liquid.
    Reference is now made primarily to Figures 2 and 3, which show the impeller 4 according to the invention. In Figure 2, the impeller 4 is located in the lower position and in Figure 3, the impeller 4 is located in a position located at a distance from the lower position. When the impeller 4 is mounted in the upper position, as mentioned above, the impeller 4 may have been displaced further in relation to the drive shaft unit 6 in the position shown in figure 3. The impeller 4 comprises a cylindrical recess 10, the lower end 5 being the drive shaft unit 6 is received in said cylindrical recess 10.
    Reference is now made to Figures 4-6. In the exemplary embodiment according to Figure 4, the drive shaft unit 6 comprises a drive shaft 11 and a sleeve 12, the sleeve 12 surrounds and is releasably connected to the drive shaft 11. The sleeve 12 thus forms part of the lower end 5 of the drive shaft unit 6. The sleeve 12 is connected to the drive shaft 11 on in the embodiment shown, the sleeve 12 is connected to the drive shaft 11 by means of a conventional tool cone 13. The drive shaft 11 is cone-shaped and the tool cone 13 is pressed onto the drive shaft 11 by means of a bolt 14 which engages the drive shaft 11 and is pulled The advantage of this embodiment is that the inboard axial position between the sleeve 12 and the drive shaft 11 can be adjusted by loosening the bolt 14 to displace the sleeve 12 in the axial direction and again tighten the bolt 14. In the exemplary embodiment according to Fig. 5, the drive shaft unit 6 is formed by a homogeneous part which constitutes the lower end 5 of the drive shaft unit 6.
    According to a further embodiment, not shown, the sleeve 12 is screwed onto the end of a cylindrical, non-conical, drive shaft 11 and this embodiment entails adjusting the axial position of the inboard between the sleeve 12 and the drive shaft 11 by arranging the desired number of intermediate layers between the sleeve 12 and the drive shaft. 11. However, it should be mentioned that this design functions and is experienced as if the lower end 5 of the drive shaft unit 6 consists of a homogeneous part in which it is mounted.
    The drive shaft unit 6 and the impeller 4 are rotatably co-rotated and in the embodiment shown, see figure 6, the pump comprises a carrier in the form of a stay or pin 15, which is coated in the interface between the lower end 5 of the drive shaft unit 6 and the cylindrical recess of the impeller 4. 10.
    The pin 15 is located in opposite recesses arranged in the outer surface 5 of the drive shaft unit 6 and in an inner surface 16 of the cylindrical recess 10, respectively. According to an alternative embodiment, a plurality of pins 15, or carriers, may be distributed along said interface, preferably equidistantly distributed. The carrier can be fixedly connected to, or form part of, the lower end 5 of the drive shaft unit 68 in an alternative, not shown, embodiment where a spline connection is arranged in said spruce section. According to a further, not shown, embodiment, said spruce section, viewed in a radially extending plane, has a polygonal basic shape such as square or hexagonal.
    In a preferred embodiment, the lower end 5 of the drive shaft unit 6 has a lower, thicker part / section, the circumferential circumferential circumferential surface of which abuts the inner surface 16 of the cylindrical recess 10, and an upper, narrower part / section, the circumferential circumferential circumferential surface of which is coated at a distance from the inner surface 16 of the cylindrical recess 10, the lower thicker part guides the impeller 4 so that the same is not inclined in relation to the axis of rotation of the pump.
    In the upper part of the cylindrical recess in the impeller 4 a ring socket 17 is arranged which abuts against the lower end 5 of the drive shaft unit 6, alternatively against the drive shaft 11, and which prevents the pumped liquid and solid material from entering the cylindrical recess 10 from above.
    The impeller 4 is preferably a so-called open impeller and comprises a nay 18 and an upper notch disc 19 and at least one blade 20, also known as a vane, which extends in the axial direction from the said impeller 19. The blade 20 is preferably helically shaped in the opposite direction to the normal direction of rotation of the impeller 4, i.e. during normal operation of the pump. The number of leaves 20 and the length of the leaves 20 can vary greatly, to suit different watering cans and applications. The cylindrical recess 10 is dangerously arranged in said nay 18. In the embodiment shown, at least one blade 20 is also connected to said nay 18, and in the preferred embodiment the impeller 4 comprises two blades 20. Furthermore, the impeller 4 comprises a slide 21 in the hub 18, which hall 21 connects the cylindrical recess 10 to the pump chamber 3. An object of said hall 21 is to allow the insertion of a suitable tool for connecting the sleeve 12 to the drive shaft 11. Central to the present invention Or that the drive shaft unit 6 comprises an axial extending pin 22 projecting from the lower end of the drive shaft unit 6. Said pin 22 arranged in said hall 21 prevents the pumped liquid from entering the cylindrical recess 10 of the impeller 4. impeller 4's Hall 21 Or displaceable in the axial direction in relation to the pin 22. Preferably Or a water seal 2 3 arranged between said hall 21 and said pin 22 may prevent the pumped liquid from entering the cylindrical recess 10 of the impeller 4 from below.
    The water seal 23 preferably consists of an O-ring.
    The liquid seal 23 Or is dangerously arranged in a groove arranged in an inner surface has the through-tail 21, alternatively the liquid seal 23 may be arranged in a spar in a casing surface 24 has the pin 22. The pin 22 abuts dangerously against an inner surface has the tail 21 warp a further guide between the impeller 4 and the drive shaft unit 6 is obtained. The guide between the thicker part of the lower end 5 of the drive shaft unit 6 and the cylindrical recess of the impeller 4 in combination with the guide between the pin 22 and the tail 21 completely eliminates the risk that the impeller 4 is inclined in an asymmetric axial force.
    The pin 22 is preferably connected to the sleeve 12, and in the most preferred embodiment shown, the pin 22 is fixedly connected to the sleeve 12. The pin 22 is preferably tubular and has a through hole 25, for the purpose of allowing the insertion of a suitable tool for connecting the sleeve. 12 with the drive shaft 11. Furthermore, a plug or hood, not shown, may be inserted into the through hole 25 having the pin 22, in order to prevent solid material from entering and clogging the bolt 14.
    Preferably, the pump comprises a snap-fit conveyor arranged in the interface between the drive shaft unit 6 and the cylindrical recess 10. The snap-fit connector is arranged to position the impeller 4 in the lower position cid a flagged force which acts to displace the impeller 4 in the direction less from the lower position. an a threshold value. In the embodiments shown, the snap-fit connection comprises a seat 26 arranged in the interface between the lower, thicker part of the lower sand 5 of the drive shaft unit 6 and the lower, narrower part of the lower end 5 of the drive shaft unit 6. If a laser element 28 has the snow relocation connection arranged in a laser element recess 29 arranged in the inner surface 16, the cylindrical recess 10 of the impeller 4 is preferably the laser element 28 formed by a spring ring and the laser element recess 29 preferably consists of a circumferential track.
    The spring ring 28 Or arranged in the recess 29 and projecting radially inwards into the cylindrical recess 10 of the impeller 4, warps the lower, thicker part of the lower end 5 of the drive shaft unit 6 Or coated below the spring ring 28. This prevents the impeller 4 from falling off the drive shaft unit 6.
    Furthermore, at least a part of the suspension ring 28 in engagement with the seat 26 of the snap-fit conveyor belt warps the impeller 4 to be retained in its lower position. Ie. snOpplasningsvulsten 27 Or coated above the spring ring 28.
    Preferably, the suspension ring 28 has a varying radius along its circumference, and has, for example, an oval, triangular or square basic shape when viewed in the axial direction. This means that certain sections of the spring ring 28 Or in contact with the seat 26 have the lower end 5 of the drive shaft unit 6 and other sections of the spring ring 28 Or in contact with the laser element recess 29 have the cylindrical recess 10 of the impeller 4. The varying radius means that the spring ring 28 may be spring biased. in the set 26 as in the laser element recess 29 and clamed, a precise placement of the impeller 4 in its lower position without play in the axial direction is obtained. At the same time, a relatively small axially applied force is required to cause the snow application bead 27 to pass the spring ring 28. The spring ring 28 preferably retains above the pin 15.
    It should be noted, however, that the spring ring 28 may alternatively have a circular basic shape. If a circular spring ring 28 is used, it cannot be a spring extension in the laser element recess 29 and because the spring ring 28 must have space to expand in a radially outward direction when the snap-fit bead 27 passes the spring ring 28.
    When a large piece of solid material forces the impeller 4 to leave the same lower position, no counteracting force acts after the snap-fitting joint has come out of its engagement. After the solid material has passed, the impeller 4 assumes the same lower position due to the fact that there is a better hydraulic pressure on the top of the impeller 4 of the impeller On on the underside of the impeller 4, and in cases the pump is oriented upwards as shown in the figures. the self-weight of the impeller 4 causes the impeller 4 to return to its lower position. Thus, when the impeller 4 has been displaced from its lower position, the spring ring 28 is still in the lead element recess 29, and when the impeller 4 returns to its lower position, the spring ring 28 is again positioned in the seat 26 of the drive shaft unit 6.
    Referring now to Figure 7, there is shown an embodiment of a suction cap 7.
    In the upper surface of the suction cap 7 and the inlet 8 of the adjacent pump chamber 3, at least one groove or slack savings 30 is arranged. The groove 30 extends from the inlet 8 of the suction cap 7 towards the periphery thereof. Preferably in a helical shape which sweeps outwards in the direction of rotation of the impeller 4, i.e. in the opposite direction to that of the blades 20. The number of grooves 30 and their shape and orientation can vary greatly to suit different watering cans and applications. The function of the spreader is to direct the solid material in the pumped liquid towards the periphery of the pump housing 2. As the solid material passes through the pump, some will get stuck under the impeller blade 20 and slow down the rotation speed of the impeller and even stop it. But the spar 30 helps to hollow the blades 20 clean, by scraping off the solid material each time the blade 20 passes the same. If the solid material is large enough to fit in the recess 30, between the impeller 4 and the suction cap 7, the impeller 4 will be pushed upwards away from the suction cap 7 with the aid of the solid material and thereby allow the solid material to pass through the pump.
    The shape of the lower edge of the blade 20 corresponds in axial direction to the shape of the upper surface of the suction cap 7. The axial distance between said lower edge and said upper surface should be less than 1 mm in the impeller 4 there in the lower position. Preferably the said distance is less than 0.8 mm and the aura is preferably less than 0.5 mm. At the same time, the variable distance should be more than 0.1 mm and preferably more than 0.2 mm. If the impeller 4 and the suction cap 7 are close together, a frictional force or a braking force acts on the blade 20 of the impeller 1.
    In order to ensure that the inlet 8 of the pump is not clogged, the suction cap 7 is dangerously provided with means for guiding the solid material towards the track 30. The control means comprises at least one guide pin 31 extending from the upper surface of the suction cap 7, more specifically from the part of the suction cap 7. The upper surface which is water towards the inlet 8. The guide pin 31 extends generally in the radial direction has the suction cap 7 and is coated under the impeller 4 and has an upper surface 32 which extends from a position adjacent the innermost part of the impeller blade 20 towards or to the suction cap 7 Upper surface. More specifically, the innermost portion of the guide surface 32 of the guide pin 31 is located at approximately the same radial distance from the center of the impeller 4 as the innermost portion of the blade 20 of the impeller 4. Preferably, the upper surface 32 of the guide pin 31 adjoins said "inlet" of said recess 30. The axial distance between the upper surface 32 of the guide pin 31 and the leading edge of the blade should be less than 1 mm, with the impeller 4 hr in the lower position. The present invention also relates to a impeller assembly for placement in a pump chamber 3. Such an impeller assembly can be sold as a coloring kit for a pump with axially displaceable impeller according to prior art. The impeller assembly comprises a impeller 4 with a cylindrical recess 10 and a sleeve 12. The sleeve 12 is received in said cylindrical recess 10, the sleeve 12 being arranged to be connected to an axially extending drive shaft 11. The impeller 4 is axially displaceable direction in relation to said sleeve 12. Furthermore, the impeller 4 comprises an axially extending hall 21 which connects said cylindrical recess 10 and said pump chamber, the sleeve 12 comprising an axially extending pin 22 projecting from the sleeve 12. The pin 22 Or arranged in In addition, the sleeve 12 belongs to the impeller assembly, and when the impeller assembly Or is mounted on the drive shaft 11, the sleeve 12 also belongs to the drive shaft unit 5 above the drive shaft unit 5.
    Conceivable modifications of the invention The invention is not limited only to the embodiments described above and shown in the drawings, which are for illustrative and exemplary purposes only. This patent application is intended to thank all the adaptations and variants of the preferred embodiments described herein, and consequently the present invention is defined by the wording of the appended claims and thus the equipment may be modified in any conceivable manner within the scope of the appended claims.
    It should also be noted that all information about / concerning terms such as above, below, upper, lower, etc., shall be interpreted / read with the equipment oriented in accordance with the 14 figures, with the drawings oriented in such a way that the reference numerals can be read correctly sdtt. Thus, such terms only indicate conditions in the illustrated embodiments, which behaviors may change if the inventive equipment is provided with a different construction / design.
    It should be pointed out that even if it is not explicitly stated that features from a specific design can be combined with the features in another embodiment, this should be considered as obvious as possible.
    权利要求:
    Claims (12)
    [1]
    A pump for pumping liquid, comprising a pump chamber and a pump wheel (4) rotatable in said pump chamber which is supported in a lower end (5) of an axially extending drive shaft unit (6), which lower end (5) has the drive shaft unit ( 6) is received in a cylindrical recess (10) in the impeller (4), the impeller (4) being reciprocally displaceable in the axial direction relative to said drive shaft unit (6), characterized in that the impeller (4) comprises an axial extending the shaft (21) connecting said cylindrical recess (10) and said pump chamber, and that the drive shaft unit (6) comprises an axially extending pin (22) projecting from said lower end (5) has the drive shaft unit (6), wherein said pin (22) is arranged in said hall (21).
    [2]
    A pump according to claim 1, used in a water heater (23) is arranged in the interface between said hall (21) and said pin (22).
    [3]
    Pump according to claim 1 or 2, in a casing surface (24) has the pin (22) abutting against an inner surface has the tail (21).
    [4]
    A pump according to any one of claims 1-3, used in an axial section of a jacket surface having the lower end (5) of the drive shaft unit (6) abutting against an inner surface (16) having the cylindrical recess (10).
    [5]
    Pump according to any one of claims 1-4, the vane in the pin (22) is tubular.
    [6]
    A pump according to any one of claims 1-5, used in the water seal (23) is an o-ring. 16
    [7]
    A pump according to any one of claims 1-6, used in the water seal (23) is arranged in a groove in an inner surface of the tail (21).
    [8]
    A pump according to any one of the preceding claims, used in the drive shaft unit (6) comprises a drive shaft (11) and a sleeve (12), the sleeve (12) surrounding and being weldably connected to the drive shaft (11) and forming part of lower end (5) of the drive shaft unit (6).
    [9]
    A pump according to claim 8, the vane of said pin (22) is fixedly connected to said sleeve (12).
    [10]
    A pump according to any one of the preceding claims, used in the impeller (4) is an open impeller comprising a nay (18), an upper cover plate (19) and at least one blade (20) connected to at least the said cover plate (19).
    [11]
    A pump according to claim 10, used in said cylindrical recess (10) and said hall (21) arranged in the nay (18) of the impeller (4).
    [12]
    A pump wheel assembly for placement in a pump chamber, comprising a pump wheel (4) having a cylindrical recess (10) and a sleeve (12), which sleeve (12) is received in said cylindrical recess (10) and which sleeve (12) is arranged to be connected to an axially extending drive shaft (11), the impeller (4) being reciprocated in the axial direction in relation to said sleeve (12), characterized in that the impeller (4) comprises an axially extending shaft ( 21) connecting said cylindrical recess (10) and said pump chamber, and that the sleeve (12) comprises an axially extending pin (22) projecting from the sleeve (12), said pin (22) being arranged in said handle ( 21). 1E 2/4 4 17 23 22 21 3/4 VI
    类似技术:
    公开号 | 公开日 | 专利标题
    SE1350958A1|2015-02-16|Pump for pumping fluid and impeller assembly
    AU2006266525B2|2011-12-08|A pump
    SE527818C2|2006-06-13|Pump is for moving contaminated fluid including solid material and has pump housing, rotatable pump wheel with at least one blade and pump wheel seat containing at least one recess in its upper surface
    CN109154299B|2021-05-11|Pump for pumping a liquid and impeller assembly
    US8128360B2|2012-03-06|Vortex pump with splitter blade impeller
    EP1815144B1|2008-03-19|Impeller wheel
    FR2674293A1|1992-09-25|CENTRIFUGAL PUMP WITH IMPROVED WHEEL RING SEAL.
    SE1350957A1|2015-02-16|Pump for pumping fluid and impeller assembly
    US9534601B2|2017-01-03|Pump
    EP0672832A1|1995-09-20|Sealing device for pump impeller
    KR20170101563A|2017-09-06|Submerged motor pump having variable type insertring
    SE502107C2|1995-08-21|Pump for transport of a fluid medium
    同族专利:
    公开号 | 公开日
    PH12016500180A1|2016-04-25|
    MY174229A|2020-04-01|
    RU2016108997A|2017-09-20|
    CN105452668A|2016-03-30|
    IL244060D0|2016-04-21|
    RU2661918C2|2018-07-23|
    CA2921291C|2021-06-15|
    CN105452668B|2018-02-23|
    AU2014307625B2|2017-11-02|
    ES2809557T3|2021-03-04|
    WO2015022601A1|2015-02-19|
    RU2016108997A3|2018-05-22|
    MX370936B|2020-01-10|
    ZA201601735B|2019-09-25|
    NZ715954A|2020-07-31|
    IL244060A|2019-03-31|
    SE539558C2|2017-10-10|
    MX2016001894A|2016-04-19|
    DK3033528T3|2020-08-10|
    AR097347A1|2016-03-09|
    US20160195091A1|2016-07-07|
    EP3033528B1|2020-07-01|
    PH12016500180B1|2016-04-25|
    CL2016000339A1|2016-08-19|
    CA2921291A1|2015-02-19|
    AP2016009091A0|2016-03-31|
    HUE050203T2|2020-11-30|
    KR102246653B1|2021-04-30|
    KR20160042451A|2016-04-19|
    US9828999B2|2017-11-28|
    HK1223671A1|2017-08-04|
    RS60578B1|2020-08-31|
    SG11201601040TA|2016-03-30|
    EP3033528A1|2016-06-22|
    PL3033528T3|2020-11-16|
    AU2014307625A1|2016-04-07|
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    SE530355C2|2006-09-29|2008-05-13|Itt Mfg Enterprises Inc|Device for interconnecting a first element and a second element, as well as a pump comprising such a device|
    DE102011077544A1|2011-06-15|2012-12-20|Ksb Aktiengesellschaft|Grinder pump|IN2013CH03755A|2013-11-26|2015-09-11|Ranga Krishna Kumar Bindingnavale|
    US10995764B2|2015-12-30|2021-05-04|Guangdong Boyu Group Co., Ltd.|Cross-flow type flow-making water pump|
    CN105782112B|2016-04-20|2018-09-18|天佑电器（苏州）有限公司|A kind of fan blade location structure and the blower using the structure|
    DK3246574T3|2016-05-17|2019-04-08|Xylem Europe Gmbh|Pump for pumping fluid as well as a forest wheel device|
    EP3312426B1|2016-10-18|2019-06-05|Xylem Europe GmbH|Cutter wheel, cutter disc as well as cutter assembly suitable for grinder pumps|
    DE102016225908A1|2016-12-21|2018-06-21|KSB SE & Co. KGaA|Vortex pump|
    CN107023506B|2017-05-10|2019-08-23|巢湖市聚源机械有限公司|A kind of water pump being convenient for changing blade|
    CH717149A1|2020-02-19|2021-08-31|Mai Joel|Cutting pump.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1350958A|SE539558C2|2013-08-15|2013-08-15|Pump for pumping fluid and impeller assembly|SE1350958A| SE539558C2|2013-08-15|2013-08-15|Pump for pumping fluid and impeller assembly|
    CA2921291A| CA2921291C|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    HUE14766218A| HUE050203T2|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    SG11201601040TA| SG11201601040TA|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    PL14766218T| PL3033528T3|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    MYPI2016700508A| MY174229A|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    AU2014307625A| AU2014307625B2|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    KR1020167006657A| KR102246653B1|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    EP14766218.3A| EP3033528B1|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    US14/911,935| US9828999B2|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    AP2016009091A| AP2016009091A0|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    ES14766218T| ES2809557T3|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    MX2016001894A| MX370936B|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly.|
    CN201480045221.9A| CN105452668B|2013-08-15|2014-08-06|Pump and impeller assembly for pump liquid|
    DK14766218.3T| DK3033528T3|2013-08-15|2014-08-06|Pump for pumping liquid and a impeller device|
    RS20200906A| RS60578B1|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    RU2016108997A| RU2661918C2|2013-08-15|2014-08-06|Liquid transfer pump and the impeller assembly|
    PCT/IB2014/063731| WO2015022601A1|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    NZ715954A| NZ715954A|2013-08-15|2014-08-06|Pump for pumping liquid as well as an impeller assembly|
    ARP140103065A| AR097347A1|2013-08-15|2014-08-14|PUMP FOR PUMPING LIQUID IN ADDITION TO AN IMPULSOR MOUNT|
    PH12016500180A| PH12016500180B1|2013-08-15|2016-01-25|Pump for pumping liquid as well as an impeller assembly|
    IL244060A| IL244060A|2013-08-15|2016-02-10|Pump for pumping liquid as well as an impeller assembly|
    CL2016000339A| CL2016000339A1|2013-08-15|2016-02-12|Liquid pump for pumping in addition to an impeller assembly|
    ZA2016/01735A| ZA201601735B|2013-08-15|2016-03-14|Pump for pumping liquid as well as an impeller assembly|
    HK16111778.7A| HK1223671A1|2013-08-15|2016-10-12|Pump for pumping liquid as well as an impeller assembly|
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